1 //===- unittest/Format/FormatTest.cpp - Formatting unit tests -------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "clang/Format/Format.h"
10 
11 #include "../Tooling/ReplacementTest.h"
12 #include "FormatTestUtils.h"
13 
14 #include "llvm/Support/Debug.h"
15 #include "llvm/Support/MemoryBuffer.h"
16 #include "gtest/gtest.h"
17 
18 #define DEBUG_TYPE "format-test"
19 
20 using clang::tooling::ReplacementTest;
21 using clang::tooling::toReplacements;
22 using testing::ScopedTrace;
23 
24 namespace clang {
25 namespace format {
26 namespace {
27 
28 FormatStyle getGoogleStyle() { return getGoogleStyle(FormatStyle::LK_Cpp); }
29 
30 class FormatTest : public ::testing::Test {
31 protected:
32   enum StatusCheck { SC_ExpectComplete, SC_ExpectIncomplete, SC_DoNotCheck };
33 
34   std::string format(llvm::StringRef Code,
35                      const FormatStyle &Style = getLLVMStyle(),
36                      StatusCheck CheckComplete = SC_ExpectComplete) {
37     LLVM_DEBUG(llvm::errs() << "---\n");
38     LLVM_DEBUG(llvm::errs() << Code << "\n\n");
39     std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size()));
40     FormattingAttemptStatus Status;
41     tooling::Replacements Replaces =
42         reformat(Style, Code, Ranges, "<stdin>", &Status);
43     if (CheckComplete != SC_DoNotCheck) {
44       bool ExpectedCompleteFormat = CheckComplete == SC_ExpectComplete;
45       EXPECT_EQ(ExpectedCompleteFormat, Status.FormatComplete)
46           << Code << "\n\n";
47     }
48     ReplacementCount = Replaces.size();
49     auto Result = applyAllReplacements(Code, Replaces);
50     EXPECT_TRUE(static_cast<bool>(Result));
51     LLVM_DEBUG(llvm::errs() << "\n" << *Result << "\n\n");
52     return *Result;
53   }
54 
55   FormatStyle getStyleWithColumns(FormatStyle Style, unsigned ColumnLimit) {
56     Style.ColumnLimit = ColumnLimit;
57     return Style;
58   }
59 
60   FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) {
61     return getStyleWithColumns(getLLVMStyle(), ColumnLimit);
62   }
63 
64   FormatStyle getGoogleStyleWithColumns(unsigned ColumnLimit) {
65     return getStyleWithColumns(getGoogleStyle(), ColumnLimit);
66   }
67 
68   void _verifyFormat(const char *File, int Line, llvm::StringRef Expected,
69                      llvm::StringRef Code,
70                      const FormatStyle &Style = getLLVMStyle()) {
71     ScopedTrace t(File, Line, ::testing::Message() << Code.str());
72     EXPECT_EQ(Expected.str(), format(Expected, Style))
73         << "Expected code is not stable";
74     EXPECT_EQ(Expected.str(), format(Code, Style));
75     if (Style.Language == FormatStyle::LK_Cpp) {
76       // Objective-C++ is a superset of C++, so everything checked for C++
77       // needs to be checked for Objective-C++ as well.
78       FormatStyle ObjCStyle = Style;
79       ObjCStyle.Language = FormatStyle::LK_ObjC;
80       EXPECT_EQ(Expected.str(), format(test::messUp(Code), ObjCStyle));
81     }
82   }
83 
84   void _verifyFormat(const char *File, int Line, llvm::StringRef Code,
85                      const FormatStyle &Style = getLLVMStyle()) {
86     _verifyFormat(File, Line, Code, test::messUp(Code), Style);
87   }
88 
89   void _verifyIncompleteFormat(const char *File, int Line, llvm::StringRef Code,
90                                const FormatStyle &Style = getLLVMStyle()) {
91     ScopedTrace t(File, Line, ::testing::Message() << Code.str());
92     EXPECT_EQ(Code.str(),
93               format(test::messUp(Code), Style, SC_ExpectIncomplete));
94   }
95 
96   void _verifyIndependentOfContext(const char *File, int Line,
97                                    llvm::StringRef Text,
98                                    const FormatStyle &Style = getLLVMStyle()) {
99     _verifyFormat(File, Line, Text, Style);
100     _verifyFormat(File, Line, llvm::Twine("void f() { " + Text + " }").str(),
101                   Style);
102   }
103 
104   /// \brief Verify that clang-format does not crash on the given input.
105   void verifyNoCrash(llvm::StringRef Code,
106                      const FormatStyle &Style = getLLVMStyle()) {
107     format(Code, Style, SC_DoNotCheck);
108   }
109 
110   int ReplacementCount;
111 };
112 
113 #define verifyIndependentOfContext(...)                                        \
114   _verifyIndependentOfContext(__FILE__, __LINE__, __VA_ARGS__)
115 #define verifyIncompleteFormat(...)                                            \
116   _verifyIncompleteFormat(__FILE__, __LINE__, __VA_ARGS__)
117 #define verifyFormat(...) _verifyFormat(__FILE__, __LINE__, __VA_ARGS__)
118 #define verifyGoogleFormat(Code) verifyFormat(Code, getGoogleStyle())
119 
120 TEST_F(FormatTest, MessUp) {
121   EXPECT_EQ("1 2 3", test::messUp("1 2 3"));
122   EXPECT_EQ("1 2 3\n", test::messUp("1\n2\n3\n"));
123   EXPECT_EQ("a\n//b\nc", test::messUp("a\n//b\nc"));
124   EXPECT_EQ("a\n#b\nc", test::messUp("a\n#b\nc"));
125   EXPECT_EQ("a\n#b c d\ne", test::messUp("a\n#b\\\nc\\\nd\ne"));
126 }
127 
128 TEST_F(FormatTest, DefaultLLVMStyleIsCpp) {
129   EXPECT_EQ(FormatStyle::LK_Cpp, getLLVMStyle().Language);
130 }
131 
132 TEST_F(FormatTest, LLVMStyleOverride) {
133   EXPECT_EQ(FormatStyle::LK_Proto,
134             getLLVMStyle(FormatStyle::LK_Proto).Language);
135 }
136 
137 //===----------------------------------------------------------------------===//
138 // Basic function tests.
139 //===----------------------------------------------------------------------===//
140 
141 TEST_F(FormatTest, DoesNotChangeCorrectlyFormattedCode) {
142   EXPECT_EQ(";", format(";"));
143 }
144 
145 TEST_F(FormatTest, FormatsGlobalStatementsAt0) {
146   EXPECT_EQ("int i;", format("  int i;"));
147   EXPECT_EQ("\nint i;", format(" \n\t \v \f  int i;"));
148   EXPECT_EQ("int i;\nint j;", format("    int i; int j;"));
149   EXPECT_EQ("int i;\nint j;", format("    int i;\n  int j;"));
150 }
151 
152 TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) {
153   EXPECT_EQ("int i;", format("int\ni;"));
154 }
155 
156 TEST_F(FormatTest, FormatsNestedBlockStatements) {
157   EXPECT_EQ("{\n  {\n    {}\n  }\n}", format("{{{}}}"));
158 }
159 
160 TEST_F(FormatTest, FormatsNestedCall) {
161   verifyFormat("Method(f1, f2(f3));");
162   verifyFormat("Method(f1(f2, f3()));");
163   verifyFormat("Method(f1(f2, (f3())));");
164 }
165 
166 TEST_F(FormatTest, NestedNameSpecifiers) {
167   verifyFormat("vector<::Type> v;");
168   verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())");
169   verifyFormat("static constexpr bool Bar = decltype(bar())::value;");
170   verifyFormat("static constexpr bool Bar = typeof(bar())::value;");
171   verifyFormat("static constexpr bool Bar = __underlying_type(bar())::value;");
172   verifyFormat("static constexpr bool Bar = _Atomic(bar())::value;");
173   verifyFormat("bool a = 2 < ::SomeFunction();");
174   verifyFormat("ALWAYS_INLINE ::std::string getName();");
175   verifyFormat("some::string getName();");
176 }
177 
178 TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) {
179   EXPECT_EQ("if (a) {\n"
180             "  f();\n"
181             "}",
182             format("if(a){f();}"));
183   EXPECT_EQ(4, ReplacementCount);
184   EXPECT_EQ("if (a) {\n"
185             "  f();\n"
186             "}",
187             format("if (a) {\n"
188                    "  f();\n"
189                    "}"));
190   EXPECT_EQ(0, ReplacementCount);
191   EXPECT_EQ("/*\r\n"
192             "\r\n"
193             "*/\r\n",
194             format("/*\r\n"
195                    "\r\n"
196                    "*/\r\n"));
197   EXPECT_EQ(0, ReplacementCount);
198 }
199 
200 TEST_F(FormatTest, RemovesEmptyLines) {
201   EXPECT_EQ("class C {\n"
202             "  int i;\n"
203             "};",
204             format("class C {\n"
205                    " int i;\n"
206                    "\n"
207                    "};"));
208 
209   // Don't remove empty lines at the start of namespaces or extern "C" blocks.
210   EXPECT_EQ("namespace N {\n"
211             "\n"
212             "int i;\n"
213             "}",
214             format("namespace N {\n"
215                    "\n"
216                    "int    i;\n"
217                    "}",
218                    getGoogleStyle()));
219   EXPECT_EQ("/* something */ namespace N {\n"
220             "\n"
221             "int i;\n"
222             "}",
223             format("/* something */ namespace N {\n"
224                    "\n"
225                    "int    i;\n"
226                    "}",
227                    getGoogleStyle()));
228   EXPECT_EQ("inline namespace N {\n"
229             "\n"
230             "int i;\n"
231             "}",
232             format("inline namespace N {\n"
233                    "\n"
234                    "int    i;\n"
235                    "}",
236                    getGoogleStyle()));
237   EXPECT_EQ("/* something */ inline namespace N {\n"
238             "\n"
239             "int i;\n"
240             "}",
241             format("/* something */ inline namespace N {\n"
242                    "\n"
243                    "int    i;\n"
244                    "}",
245                    getGoogleStyle()));
246   EXPECT_EQ("export namespace N {\n"
247             "\n"
248             "int i;\n"
249             "}",
250             format("export namespace N {\n"
251                    "\n"
252                    "int    i;\n"
253                    "}",
254                    getGoogleStyle()));
255   EXPECT_EQ("extern /**/ \"C\" /**/ {\n"
256             "\n"
257             "int i;\n"
258             "}",
259             format("extern /**/ \"C\" /**/ {\n"
260                    "\n"
261                    "int    i;\n"
262                    "}",
263                    getGoogleStyle()));
264 
265   auto CustomStyle = getLLVMStyle();
266   CustomStyle.BreakBeforeBraces = FormatStyle::BS_Custom;
267   CustomStyle.BraceWrapping.AfterNamespace = true;
268   CustomStyle.KeepEmptyLinesAtTheStartOfBlocks = false;
269   EXPECT_EQ("namespace N\n"
270             "{\n"
271             "\n"
272             "int i;\n"
273             "}",
274             format("namespace N\n"
275                    "{\n"
276                    "\n"
277                    "\n"
278                    "int    i;\n"
279                    "}",
280                    CustomStyle));
281   EXPECT_EQ("/* something */ namespace N\n"
282             "{\n"
283             "\n"
284             "int i;\n"
285             "}",
286             format("/* something */ namespace N {\n"
287                    "\n"
288                    "\n"
289                    "int    i;\n"
290                    "}",
291                    CustomStyle));
292   EXPECT_EQ("inline namespace N\n"
293             "{\n"
294             "\n"
295             "int i;\n"
296             "}",
297             format("inline namespace N\n"
298                    "{\n"
299                    "\n"
300                    "\n"
301                    "int    i;\n"
302                    "}",
303                    CustomStyle));
304   EXPECT_EQ("/* something */ inline namespace N\n"
305             "{\n"
306             "\n"
307             "int i;\n"
308             "}",
309             format("/* something */ inline namespace N\n"
310                    "{\n"
311                    "\n"
312                    "int    i;\n"
313                    "}",
314                    CustomStyle));
315   EXPECT_EQ("export namespace N\n"
316             "{\n"
317             "\n"
318             "int i;\n"
319             "}",
320             format("export namespace N\n"
321                    "{\n"
322                    "\n"
323                    "int    i;\n"
324                    "}",
325                    CustomStyle));
326   EXPECT_EQ("namespace a\n"
327             "{\n"
328             "namespace b\n"
329             "{\n"
330             "\n"
331             "class AA {};\n"
332             "\n"
333             "} // namespace b\n"
334             "} // namespace a\n",
335             format("namespace a\n"
336                    "{\n"
337                    "namespace b\n"
338                    "{\n"
339                    "\n"
340                    "\n"
341                    "class AA {};\n"
342                    "\n"
343                    "\n"
344                    "}\n"
345                    "}\n",
346                    CustomStyle));
347   EXPECT_EQ("namespace A /* comment */\n"
348             "{\n"
349             "class B {}\n"
350             "} // namespace A",
351             format("namespace A /* comment */ { class B {} }", CustomStyle));
352   EXPECT_EQ("namespace A\n"
353             "{ /* comment */\n"
354             "class B {}\n"
355             "} // namespace A",
356             format("namespace A {/* comment */ class B {} }", CustomStyle));
357   EXPECT_EQ("namespace A\n"
358             "{ /* comment */\n"
359             "\n"
360             "class B {}\n"
361             "\n"
362             ""
363             "} // namespace A",
364             format("namespace A { /* comment */\n"
365                    "\n"
366                    "\n"
367                    "class B {}\n"
368                    "\n"
369                    "\n"
370                    "}",
371                    CustomStyle));
372   EXPECT_EQ("namespace A /* comment */\n"
373             "{\n"
374             "\n"
375             "class B {}\n"
376             "\n"
377             "} // namespace A",
378             format("namespace A/* comment */ {\n"
379                    "\n"
380                    "\n"
381                    "class B {}\n"
382                    "\n"
383                    "\n"
384                    "}",
385                    CustomStyle));
386 
387   // ...but do keep inlining and removing empty lines for non-block extern "C"
388   // functions.
389   verifyFormat("extern \"C\" int f() { return 42; }", getGoogleStyle());
390   EXPECT_EQ("extern \"C\" int f() {\n"
391             "  int i = 42;\n"
392             "  return i;\n"
393             "}",
394             format("extern \"C\" int f() {\n"
395                    "\n"
396                    "  int i = 42;\n"
397                    "  return i;\n"
398                    "}",
399                    getGoogleStyle()));
400 
401   // Remove empty lines at the beginning and end of blocks.
402   EXPECT_EQ("void f() {\n"
403             "\n"
404             "  if (a) {\n"
405             "\n"
406             "    f();\n"
407             "  }\n"
408             "}",
409             format("void f() {\n"
410                    "\n"
411                    "  if (a) {\n"
412                    "\n"
413                    "    f();\n"
414                    "\n"
415                    "  }\n"
416                    "\n"
417                    "}",
418                    getLLVMStyle()));
419   EXPECT_EQ("void f() {\n"
420             "  if (a) {\n"
421             "    f();\n"
422             "  }\n"
423             "}",
424             format("void f() {\n"
425                    "\n"
426                    "  if (a) {\n"
427                    "\n"
428                    "    f();\n"
429                    "\n"
430                    "  }\n"
431                    "\n"
432                    "}",
433                    getGoogleStyle()));
434 
435   // Don't remove empty lines in more complex control statements.
436   EXPECT_EQ("void f() {\n"
437             "  if (a) {\n"
438             "    f();\n"
439             "\n"
440             "  } else if (b) {\n"
441             "    f();\n"
442             "  }\n"
443             "}",
444             format("void f() {\n"
445                    "  if (a) {\n"
446                    "    f();\n"
447                    "\n"
448                    "  } else if (b) {\n"
449                    "    f();\n"
450                    "\n"
451                    "  }\n"
452                    "\n"
453                    "}"));
454 
455   // Don't remove empty lines before namespace endings.
456   FormatStyle LLVMWithNoNamespaceFix = getLLVMStyle();
457   LLVMWithNoNamespaceFix.FixNamespaceComments = false;
458   EXPECT_EQ("namespace {\n"
459             "int i;\n"
460             "\n"
461             "}",
462             format("namespace {\n"
463                    "int i;\n"
464                    "\n"
465                    "}",
466                    LLVMWithNoNamespaceFix));
467   EXPECT_EQ("namespace {\n"
468             "int i;\n"
469             "}",
470             format("namespace {\n"
471                    "int i;\n"
472                    "}",
473                    LLVMWithNoNamespaceFix));
474   EXPECT_EQ("namespace {\n"
475             "int i;\n"
476             "\n"
477             "};",
478             format("namespace {\n"
479                    "int i;\n"
480                    "\n"
481                    "};",
482                    LLVMWithNoNamespaceFix));
483   EXPECT_EQ("namespace {\n"
484             "int i;\n"
485             "};",
486             format("namespace {\n"
487                    "int i;\n"
488                    "};",
489                    LLVMWithNoNamespaceFix));
490   EXPECT_EQ("namespace {\n"
491             "int i;\n"
492             "\n"
493             "}",
494             format("namespace {\n"
495                    "int i;\n"
496                    "\n"
497                    "}"));
498   EXPECT_EQ("namespace {\n"
499             "int i;\n"
500             "\n"
501             "} // namespace",
502             format("namespace {\n"
503                    "int i;\n"
504                    "\n"
505                    "}  // namespace"));
506 
507   FormatStyle Style = getLLVMStyle();
508   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
509   Style.MaxEmptyLinesToKeep = 2;
510   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
511   Style.BraceWrapping.AfterClass = true;
512   Style.BraceWrapping.AfterFunction = true;
513   Style.KeepEmptyLinesAtTheStartOfBlocks = false;
514 
515   EXPECT_EQ("class Foo\n"
516             "{\n"
517             "  Foo() {}\n"
518             "\n"
519             "  void funk() {}\n"
520             "};",
521             format("class Foo\n"
522                    "{\n"
523                    "  Foo()\n"
524                    "  {\n"
525                    "  }\n"
526                    "\n"
527                    "  void funk() {}\n"
528                    "};",
529                    Style));
530 }
531 
532 TEST_F(FormatTest, RecognizesBinaryOperatorKeywords) {
533   verifyFormat("x = (a) and (b);");
534   verifyFormat("x = (a) or (b);");
535   verifyFormat("x = (a) bitand (b);");
536   verifyFormat("x = (a) bitor (b);");
537   verifyFormat("x = (a) not_eq (b);");
538   verifyFormat("x = (a) and_eq (b);");
539   verifyFormat("x = (a) or_eq (b);");
540   verifyFormat("x = (a) xor (b);");
541 }
542 
543 TEST_F(FormatTest, RecognizesUnaryOperatorKeywords) {
544   verifyFormat("x = compl(a);");
545   verifyFormat("x = not(a);");
546   verifyFormat("x = bitand(a);");
547   // Unary operator must not be merged with the next identifier
548   verifyFormat("x = compl a;");
549   verifyFormat("x = not a;");
550   verifyFormat("x = bitand a;");
551 }
552 
553 //===----------------------------------------------------------------------===//
554 // Tests for control statements.
555 //===----------------------------------------------------------------------===//
556 
557 TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
558   verifyFormat("if (true)\n  f();\ng();");
559   verifyFormat("if (a)\n  if (b)\n    if (c)\n      g();\nh();");
560   verifyFormat("if (a)\n  if (b) {\n    f();\n  }\ng();");
561   verifyFormat("if constexpr (true)\n"
562                "  f();\ng();");
563   verifyFormat("if CONSTEXPR (true)\n"
564                "  f();\ng();");
565   verifyFormat("if constexpr (a)\n"
566                "  if constexpr (b)\n"
567                "    if constexpr (c)\n"
568                "      g();\n"
569                "h();");
570   verifyFormat("if CONSTEXPR (a)\n"
571                "  if CONSTEXPR (b)\n"
572                "    if CONSTEXPR (c)\n"
573                "      g();\n"
574                "h();");
575   verifyFormat("if constexpr (a)\n"
576                "  if constexpr (b) {\n"
577                "    f();\n"
578                "  }\n"
579                "g();");
580   verifyFormat("if CONSTEXPR (a)\n"
581                "  if CONSTEXPR (b) {\n"
582                "    f();\n"
583                "  }\n"
584                "g();");
585 
586   verifyFormat("if consteval {\n}");
587   verifyFormat("if !consteval {\n}");
588   verifyFormat("if not consteval {\n}");
589   verifyFormat("if consteval {\n} else {\n}");
590   verifyFormat("if !consteval {\n} else {\n}");
591   verifyFormat("if consteval {\n"
592                "  f();\n"
593                "}");
594   verifyFormat("if !consteval {\n"
595                "  f();\n"
596                "}");
597   verifyFormat("if consteval {\n"
598                "  f();\n"
599                "} else {\n"
600                "  g();\n"
601                "}");
602   verifyFormat("if CONSTEVAL {\n"
603                "  f();\n"
604                "}");
605   verifyFormat("if !CONSTEVAL {\n"
606                "  f();\n"
607                "}");
608 
609   verifyFormat("if (a)\n"
610                "  g();");
611   verifyFormat("if (a) {\n"
612                "  g()\n"
613                "};");
614   verifyFormat("if (a)\n"
615                "  g();\n"
616                "else\n"
617                "  g();");
618   verifyFormat("if (a) {\n"
619                "  g();\n"
620                "} else\n"
621                "  g();");
622   verifyFormat("if (a)\n"
623                "  g();\n"
624                "else {\n"
625                "  g();\n"
626                "}");
627   verifyFormat("if (a) {\n"
628                "  g();\n"
629                "} else {\n"
630                "  g();\n"
631                "}");
632   verifyFormat("if (a)\n"
633                "  g();\n"
634                "else if (b)\n"
635                "  g();\n"
636                "else\n"
637                "  g();");
638   verifyFormat("if (a) {\n"
639                "  g();\n"
640                "} else if (b)\n"
641                "  g();\n"
642                "else\n"
643                "  g();");
644   verifyFormat("if (a)\n"
645                "  g();\n"
646                "else if (b) {\n"
647                "  g();\n"
648                "} else\n"
649                "  g();");
650   verifyFormat("if (a)\n"
651                "  g();\n"
652                "else if (b)\n"
653                "  g();\n"
654                "else {\n"
655                "  g();\n"
656                "}");
657   verifyFormat("if (a)\n"
658                "  g();\n"
659                "else if (b) {\n"
660                "  g();\n"
661                "} else {\n"
662                "  g();\n"
663                "}");
664   verifyFormat("if (a) {\n"
665                "  g();\n"
666                "} else if (b) {\n"
667                "  g();\n"
668                "} else {\n"
669                "  g();\n"
670                "}");
671 
672   FormatStyle AllowsMergedIf = getLLVMStyle();
673   AllowsMergedIf.IfMacros.push_back("MYIF");
674   AllowsMergedIf.AlignEscapedNewlines = FormatStyle::ENAS_Left;
675   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
676       FormatStyle::SIS_WithoutElse;
677   verifyFormat("if (a)\n"
678                "  // comment\n"
679                "  f();",
680                AllowsMergedIf);
681   verifyFormat("{\n"
682                "  if (a)\n"
683                "  label:\n"
684                "    f();\n"
685                "}",
686                AllowsMergedIf);
687   verifyFormat("#define A \\\n"
688                "  if (a)  \\\n"
689                "  label:  \\\n"
690                "    f()",
691                AllowsMergedIf);
692   verifyFormat("if (a)\n"
693                "  ;",
694                AllowsMergedIf);
695   verifyFormat("if (a)\n"
696                "  if (b) return;",
697                AllowsMergedIf);
698 
699   verifyFormat("if (a) // Can't merge this\n"
700                "  f();\n",
701                AllowsMergedIf);
702   verifyFormat("if (a) /* still don't merge */\n"
703                "  f();",
704                AllowsMergedIf);
705   verifyFormat("if (a) { // Never merge this\n"
706                "  f();\n"
707                "}",
708                AllowsMergedIf);
709   verifyFormat("if (a) { /* Never merge this */\n"
710                "  f();\n"
711                "}",
712                AllowsMergedIf);
713   verifyFormat("MYIF (a)\n"
714                "  // comment\n"
715                "  f();",
716                AllowsMergedIf);
717   verifyFormat("{\n"
718                "  MYIF (a)\n"
719                "  label:\n"
720                "    f();\n"
721                "}",
722                AllowsMergedIf);
723   verifyFormat("#define A  \\\n"
724                "  MYIF (a) \\\n"
725                "  label:   \\\n"
726                "    f()",
727                AllowsMergedIf);
728   verifyFormat("MYIF (a)\n"
729                "  ;",
730                AllowsMergedIf);
731   verifyFormat("MYIF (a)\n"
732                "  MYIF (b) return;",
733                AllowsMergedIf);
734 
735   verifyFormat("MYIF (a) // Can't merge this\n"
736                "  f();\n",
737                AllowsMergedIf);
738   verifyFormat("MYIF (a) /* still don't merge */\n"
739                "  f();",
740                AllowsMergedIf);
741   verifyFormat("MYIF (a) { // Never merge this\n"
742                "  f();\n"
743                "}",
744                AllowsMergedIf);
745   verifyFormat("MYIF (a) { /* Never merge this */\n"
746                "  f();\n"
747                "}",
748                AllowsMergedIf);
749 
750   AllowsMergedIf.ColumnLimit = 14;
751   // Where line-lengths matter, a 2-letter synonym that maintains line length.
752   // Not IF to avoid any confusion that IF is somehow special.
753   AllowsMergedIf.IfMacros.push_back("FI");
754   verifyFormat("if (a) return;", AllowsMergedIf);
755   verifyFormat("if (aaaaaaaaa)\n"
756                "  return;",
757                AllowsMergedIf);
758   verifyFormat("FI (a) return;", AllowsMergedIf);
759   verifyFormat("FI (aaaaaaaaa)\n"
760                "  return;",
761                AllowsMergedIf);
762 
763   AllowsMergedIf.ColumnLimit = 13;
764   verifyFormat("if (a)\n  return;", AllowsMergedIf);
765   verifyFormat("FI (a)\n  return;", AllowsMergedIf);
766 
767   FormatStyle AllowsMergedIfElse = getLLVMStyle();
768   AllowsMergedIfElse.IfMacros.push_back("MYIF");
769   AllowsMergedIfElse.AllowShortIfStatementsOnASingleLine =
770       FormatStyle::SIS_AllIfsAndElse;
771   verifyFormat("if (a)\n"
772                "  // comment\n"
773                "  f();\n"
774                "else\n"
775                "  // comment\n"
776                "  f();",
777                AllowsMergedIfElse);
778   verifyFormat("{\n"
779                "  if (a)\n"
780                "  label:\n"
781                "    f();\n"
782                "  else\n"
783                "  label:\n"
784                "    f();\n"
785                "}",
786                AllowsMergedIfElse);
787   verifyFormat("if (a)\n"
788                "  ;\n"
789                "else\n"
790                "  ;",
791                AllowsMergedIfElse);
792   verifyFormat("if (a) {\n"
793                "} else {\n"
794                "}",
795                AllowsMergedIfElse);
796   verifyFormat("if (a) return;\n"
797                "else if (b) return;\n"
798                "else return;",
799                AllowsMergedIfElse);
800   verifyFormat("if (a) {\n"
801                "} else return;",
802                AllowsMergedIfElse);
803   verifyFormat("if (a) {\n"
804                "} else if (b) return;\n"
805                "else return;",
806                AllowsMergedIfElse);
807   verifyFormat("if (a) return;\n"
808                "else if (b) {\n"
809                "} else return;",
810                AllowsMergedIfElse);
811   verifyFormat("if (a)\n"
812                "  if (b) return;\n"
813                "  else return;",
814                AllowsMergedIfElse);
815   verifyFormat("if constexpr (a)\n"
816                "  if constexpr (b) return;\n"
817                "  else if constexpr (c) return;\n"
818                "  else return;",
819                AllowsMergedIfElse);
820   verifyFormat("MYIF (a)\n"
821                "  // comment\n"
822                "  f();\n"
823                "else\n"
824                "  // comment\n"
825                "  f();",
826                AllowsMergedIfElse);
827   verifyFormat("{\n"
828                "  MYIF (a)\n"
829                "  label:\n"
830                "    f();\n"
831                "  else\n"
832                "  label:\n"
833                "    f();\n"
834                "}",
835                AllowsMergedIfElse);
836   verifyFormat("MYIF (a)\n"
837                "  ;\n"
838                "else\n"
839                "  ;",
840                AllowsMergedIfElse);
841   verifyFormat("MYIF (a) {\n"
842                "} else {\n"
843                "}",
844                AllowsMergedIfElse);
845   verifyFormat("MYIF (a) return;\n"
846                "else MYIF (b) return;\n"
847                "else return;",
848                AllowsMergedIfElse);
849   verifyFormat("MYIF (a) {\n"
850                "} else return;",
851                AllowsMergedIfElse);
852   verifyFormat("MYIF (a) {\n"
853                "} else MYIF (b) return;\n"
854                "else return;",
855                AllowsMergedIfElse);
856   verifyFormat("MYIF (a) return;\n"
857                "else MYIF (b) {\n"
858                "} else return;",
859                AllowsMergedIfElse);
860   verifyFormat("MYIF (a)\n"
861                "  MYIF (b) return;\n"
862                "  else return;",
863                AllowsMergedIfElse);
864   verifyFormat("MYIF constexpr (a)\n"
865                "  MYIF constexpr (b) return;\n"
866                "  else MYIF constexpr (c) return;\n"
867                "  else return;",
868                AllowsMergedIfElse);
869 }
870 
871 TEST_F(FormatTest, FormatIfWithoutCompoundStatementButElseWith) {
872   FormatStyle AllowsMergedIf = getLLVMStyle();
873   AllowsMergedIf.IfMacros.push_back("MYIF");
874   AllowsMergedIf.AlignEscapedNewlines = FormatStyle::ENAS_Left;
875   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
876       FormatStyle::SIS_WithoutElse;
877   verifyFormat("if (a)\n"
878                "  f();\n"
879                "else {\n"
880                "  g();\n"
881                "}",
882                AllowsMergedIf);
883   verifyFormat("if (a)\n"
884                "  f();\n"
885                "else\n"
886                "  g();\n",
887                AllowsMergedIf);
888 
889   verifyFormat("if (a) g();", AllowsMergedIf);
890   verifyFormat("if (a) {\n"
891                "  g()\n"
892                "};",
893                AllowsMergedIf);
894   verifyFormat("if (a)\n"
895                "  g();\n"
896                "else\n"
897                "  g();",
898                AllowsMergedIf);
899   verifyFormat("if (a) {\n"
900                "  g();\n"
901                "} else\n"
902                "  g();",
903                AllowsMergedIf);
904   verifyFormat("if (a)\n"
905                "  g();\n"
906                "else {\n"
907                "  g();\n"
908                "}",
909                AllowsMergedIf);
910   verifyFormat("if (a) {\n"
911                "  g();\n"
912                "} else {\n"
913                "  g();\n"
914                "}",
915                AllowsMergedIf);
916   verifyFormat("if (a)\n"
917                "  g();\n"
918                "else if (b)\n"
919                "  g();\n"
920                "else\n"
921                "  g();",
922                AllowsMergedIf);
923   verifyFormat("if (a) {\n"
924                "  g();\n"
925                "} else if (b)\n"
926                "  g();\n"
927                "else\n"
928                "  g();",
929                AllowsMergedIf);
930   verifyFormat("if (a)\n"
931                "  g();\n"
932                "else if (b) {\n"
933                "  g();\n"
934                "} else\n"
935                "  g();",
936                AllowsMergedIf);
937   verifyFormat("if (a)\n"
938                "  g();\n"
939                "else if (b)\n"
940                "  g();\n"
941                "else {\n"
942                "  g();\n"
943                "}",
944                AllowsMergedIf);
945   verifyFormat("if (a)\n"
946                "  g();\n"
947                "else if (b) {\n"
948                "  g();\n"
949                "} else {\n"
950                "  g();\n"
951                "}",
952                AllowsMergedIf);
953   verifyFormat("if (a) {\n"
954                "  g();\n"
955                "} else if (b) {\n"
956                "  g();\n"
957                "} else {\n"
958                "  g();\n"
959                "}",
960                AllowsMergedIf);
961   verifyFormat("MYIF (a)\n"
962                "  f();\n"
963                "else {\n"
964                "  g();\n"
965                "}",
966                AllowsMergedIf);
967   verifyFormat("MYIF (a)\n"
968                "  f();\n"
969                "else\n"
970                "  g();\n",
971                AllowsMergedIf);
972 
973   verifyFormat("MYIF (a) g();", AllowsMergedIf);
974   verifyFormat("MYIF (a) {\n"
975                "  g()\n"
976                "};",
977                AllowsMergedIf);
978   verifyFormat("MYIF (a)\n"
979                "  g();\n"
980                "else\n"
981                "  g();",
982                AllowsMergedIf);
983   verifyFormat("MYIF (a) {\n"
984                "  g();\n"
985                "} else\n"
986                "  g();",
987                AllowsMergedIf);
988   verifyFormat("MYIF (a)\n"
989                "  g();\n"
990                "else {\n"
991                "  g();\n"
992                "}",
993                AllowsMergedIf);
994   verifyFormat("MYIF (a) {\n"
995                "  g();\n"
996                "} else {\n"
997                "  g();\n"
998                "}",
999                AllowsMergedIf);
1000   verifyFormat("MYIF (a)\n"
1001                "  g();\n"
1002                "else MYIF (b)\n"
1003                "  g();\n"
1004                "else\n"
1005                "  g();",
1006                AllowsMergedIf);
1007   verifyFormat("MYIF (a)\n"
1008                "  g();\n"
1009                "else if (b)\n"
1010                "  g();\n"
1011                "else\n"
1012                "  g();",
1013                AllowsMergedIf);
1014   verifyFormat("MYIF (a) {\n"
1015                "  g();\n"
1016                "} else MYIF (b)\n"
1017                "  g();\n"
1018                "else\n"
1019                "  g();",
1020                AllowsMergedIf);
1021   verifyFormat("MYIF (a) {\n"
1022                "  g();\n"
1023                "} else if (b)\n"
1024                "  g();\n"
1025                "else\n"
1026                "  g();",
1027                AllowsMergedIf);
1028   verifyFormat("MYIF (a)\n"
1029                "  g();\n"
1030                "else MYIF (b) {\n"
1031                "  g();\n"
1032                "} else\n"
1033                "  g();",
1034                AllowsMergedIf);
1035   verifyFormat("MYIF (a)\n"
1036                "  g();\n"
1037                "else if (b) {\n"
1038                "  g();\n"
1039                "} else\n"
1040                "  g();",
1041                AllowsMergedIf);
1042   verifyFormat("MYIF (a)\n"
1043                "  g();\n"
1044                "else MYIF (b)\n"
1045                "  g();\n"
1046                "else {\n"
1047                "  g();\n"
1048                "}",
1049                AllowsMergedIf);
1050   verifyFormat("MYIF (a)\n"
1051                "  g();\n"
1052                "else if (b)\n"
1053                "  g();\n"
1054                "else {\n"
1055                "  g();\n"
1056                "}",
1057                AllowsMergedIf);
1058   verifyFormat("MYIF (a)\n"
1059                "  g();\n"
1060                "else MYIF (b) {\n"
1061                "  g();\n"
1062                "} else {\n"
1063                "  g();\n"
1064                "}",
1065                AllowsMergedIf);
1066   verifyFormat("MYIF (a)\n"
1067                "  g();\n"
1068                "else if (b) {\n"
1069                "  g();\n"
1070                "} else {\n"
1071                "  g();\n"
1072                "}",
1073                AllowsMergedIf);
1074   verifyFormat("MYIF (a) {\n"
1075                "  g();\n"
1076                "} else MYIF (b) {\n"
1077                "  g();\n"
1078                "} else {\n"
1079                "  g();\n"
1080                "}",
1081                AllowsMergedIf);
1082   verifyFormat("MYIF (a) {\n"
1083                "  g();\n"
1084                "} else if (b) {\n"
1085                "  g();\n"
1086                "} else {\n"
1087                "  g();\n"
1088                "}",
1089                AllowsMergedIf);
1090 
1091   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
1092       FormatStyle::SIS_OnlyFirstIf;
1093 
1094   verifyFormat("if (a) f();\n"
1095                "else {\n"
1096                "  g();\n"
1097                "}",
1098                AllowsMergedIf);
1099   verifyFormat("if (a) f();\n"
1100                "else {\n"
1101                "  if (a) f();\n"
1102                "  else {\n"
1103                "    g();\n"
1104                "  }\n"
1105                "  g();\n"
1106                "}",
1107                AllowsMergedIf);
1108 
1109   verifyFormat("if (a) g();", AllowsMergedIf);
1110   verifyFormat("if (a) {\n"
1111                "  g()\n"
1112                "};",
1113                AllowsMergedIf);
1114   verifyFormat("if (a) g();\n"
1115                "else\n"
1116                "  g();",
1117                AllowsMergedIf);
1118   verifyFormat("if (a) {\n"
1119                "  g();\n"
1120                "} else\n"
1121                "  g();",
1122                AllowsMergedIf);
1123   verifyFormat("if (a) g();\n"
1124                "else {\n"
1125                "  g();\n"
1126                "}",
1127                AllowsMergedIf);
1128   verifyFormat("if (a) {\n"
1129                "  g();\n"
1130                "} else {\n"
1131                "  g();\n"
1132                "}",
1133                AllowsMergedIf);
1134   verifyFormat("if (a) g();\n"
1135                "else if (b)\n"
1136                "  g();\n"
1137                "else\n"
1138                "  g();",
1139                AllowsMergedIf);
1140   verifyFormat("if (a) {\n"
1141                "  g();\n"
1142                "} else if (b)\n"
1143                "  g();\n"
1144                "else\n"
1145                "  g();",
1146                AllowsMergedIf);
1147   verifyFormat("if (a) g();\n"
1148                "else if (b) {\n"
1149                "  g();\n"
1150                "} else\n"
1151                "  g();",
1152                AllowsMergedIf);
1153   verifyFormat("if (a) g();\n"
1154                "else if (b)\n"
1155                "  g();\n"
1156                "else {\n"
1157                "  g();\n"
1158                "}",
1159                AllowsMergedIf);
1160   verifyFormat("if (a) g();\n"
1161                "else if (b) {\n"
1162                "  g();\n"
1163                "} else {\n"
1164                "  g();\n"
1165                "}",
1166                AllowsMergedIf);
1167   verifyFormat("if (a) {\n"
1168                "  g();\n"
1169                "} else if (b) {\n"
1170                "  g();\n"
1171                "} else {\n"
1172                "  g();\n"
1173                "}",
1174                AllowsMergedIf);
1175   verifyFormat("MYIF (a) f();\n"
1176                "else {\n"
1177                "  g();\n"
1178                "}",
1179                AllowsMergedIf);
1180   verifyFormat("MYIF (a) f();\n"
1181                "else {\n"
1182                "  if (a) f();\n"
1183                "  else {\n"
1184                "    g();\n"
1185                "  }\n"
1186                "  g();\n"
1187                "}",
1188                AllowsMergedIf);
1189 
1190   verifyFormat("MYIF (a) g();", AllowsMergedIf);
1191   verifyFormat("MYIF (a) {\n"
1192                "  g()\n"
1193                "};",
1194                AllowsMergedIf);
1195   verifyFormat("MYIF (a) g();\n"
1196                "else\n"
1197                "  g();",
1198                AllowsMergedIf);
1199   verifyFormat("MYIF (a) {\n"
1200                "  g();\n"
1201                "} else\n"
1202                "  g();",
1203                AllowsMergedIf);
1204   verifyFormat("MYIF (a) g();\n"
1205                "else {\n"
1206                "  g();\n"
1207                "}",
1208                AllowsMergedIf);
1209   verifyFormat("MYIF (a) {\n"
1210                "  g();\n"
1211                "} else {\n"
1212                "  g();\n"
1213                "}",
1214                AllowsMergedIf);
1215   verifyFormat("MYIF (a) g();\n"
1216                "else MYIF (b)\n"
1217                "  g();\n"
1218                "else\n"
1219                "  g();",
1220                AllowsMergedIf);
1221   verifyFormat("MYIF (a) g();\n"
1222                "else if (b)\n"
1223                "  g();\n"
1224                "else\n"
1225                "  g();",
1226                AllowsMergedIf);
1227   verifyFormat("MYIF (a) {\n"
1228                "  g();\n"
1229                "} else MYIF (b)\n"
1230                "  g();\n"
1231                "else\n"
1232                "  g();",
1233                AllowsMergedIf);
1234   verifyFormat("MYIF (a) {\n"
1235                "  g();\n"
1236                "} else if (b)\n"
1237                "  g();\n"
1238                "else\n"
1239                "  g();",
1240                AllowsMergedIf);
1241   verifyFormat("MYIF (a) g();\n"
1242                "else MYIF (b) {\n"
1243                "  g();\n"
1244                "} else\n"
1245                "  g();",
1246                AllowsMergedIf);
1247   verifyFormat("MYIF (a) g();\n"
1248                "else if (b) {\n"
1249                "  g();\n"
1250                "} else\n"
1251                "  g();",
1252                AllowsMergedIf);
1253   verifyFormat("MYIF (a) g();\n"
1254                "else MYIF (b)\n"
1255                "  g();\n"
1256                "else {\n"
1257                "  g();\n"
1258                "}",
1259                AllowsMergedIf);
1260   verifyFormat("MYIF (a) g();\n"
1261                "else if (b)\n"
1262                "  g();\n"
1263                "else {\n"
1264                "  g();\n"
1265                "}",
1266                AllowsMergedIf);
1267   verifyFormat("MYIF (a) g();\n"
1268                "else MYIF (b) {\n"
1269                "  g();\n"
1270                "} else {\n"
1271                "  g();\n"
1272                "}",
1273                AllowsMergedIf);
1274   verifyFormat("MYIF (a) g();\n"
1275                "else if (b) {\n"
1276                "  g();\n"
1277                "} else {\n"
1278                "  g();\n"
1279                "}",
1280                AllowsMergedIf);
1281   verifyFormat("MYIF (a) {\n"
1282                "  g();\n"
1283                "} else MYIF (b) {\n"
1284                "  g();\n"
1285                "} else {\n"
1286                "  g();\n"
1287                "}",
1288                AllowsMergedIf);
1289   verifyFormat("MYIF (a) {\n"
1290                "  g();\n"
1291                "} else if (b) {\n"
1292                "  g();\n"
1293                "} else {\n"
1294                "  g();\n"
1295                "}",
1296                AllowsMergedIf);
1297 
1298   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
1299       FormatStyle::SIS_AllIfsAndElse;
1300 
1301   verifyFormat("if (a) f();\n"
1302                "else {\n"
1303                "  g();\n"
1304                "}",
1305                AllowsMergedIf);
1306   verifyFormat("if (a) f();\n"
1307                "else {\n"
1308                "  if (a) f();\n"
1309                "  else {\n"
1310                "    g();\n"
1311                "  }\n"
1312                "  g();\n"
1313                "}",
1314                AllowsMergedIf);
1315 
1316   verifyFormat("if (a) g();", AllowsMergedIf);
1317   verifyFormat("if (a) {\n"
1318                "  g()\n"
1319                "};",
1320                AllowsMergedIf);
1321   verifyFormat("if (a) g();\n"
1322                "else g();",
1323                AllowsMergedIf);
1324   verifyFormat("if (a) {\n"
1325                "  g();\n"
1326                "} else g();",
1327                AllowsMergedIf);
1328   verifyFormat("if (a) g();\n"
1329                "else {\n"
1330                "  g();\n"
1331                "}",
1332                AllowsMergedIf);
1333   verifyFormat("if (a) {\n"
1334                "  g();\n"
1335                "} else {\n"
1336                "  g();\n"
1337                "}",
1338                AllowsMergedIf);
1339   verifyFormat("if (a) g();\n"
1340                "else if (b) g();\n"
1341                "else g();",
1342                AllowsMergedIf);
1343   verifyFormat("if (a) {\n"
1344                "  g();\n"
1345                "} else if (b) g();\n"
1346                "else g();",
1347                AllowsMergedIf);
1348   verifyFormat("if (a) g();\n"
1349                "else if (b) {\n"
1350                "  g();\n"
1351                "} else g();",
1352                AllowsMergedIf);
1353   verifyFormat("if (a) g();\n"
1354                "else if (b) g();\n"
1355                "else {\n"
1356                "  g();\n"
1357                "}",
1358                AllowsMergedIf);
1359   verifyFormat("if (a) g();\n"
1360                "else if (b) {\n"
1361                "  g();\n"
1362                "} else {\n"
1363                "  g();\n"
1364                "}",
1365                AllowsMergedIf);
1366   verifyFormat("if (a) {\n"
1367                "  g();\n"
1368                "} else if (b) {\n"
1369                "  g();\n"
1370                "} else {\n"
1371                "  g();\n"
1372                "}",
1373                AllowsMergedIf);
1374   verifyFormat("MYIF (a) f();\n"
1375                "else {\n"
1376                "  g();\n"
1377                "}",
1378                AllowsMergedIf);
1379   verifyFormat("MYIF (a) f();\n"
1380                "else {\n"
1381                "  if (a) f();\n"
1382                "  else {\n"
1383                "    g();\n"
1384                "  }\n"
1385                "  g();\n"
1386                "}",
1387                AllowsMergedIf);
1388 
1389   verifyFormat("MYIF (a) g();", AllowsMergedIf);
1390   verifyFormat("MYIF (a) {\n"
1391                "  g()\n"
1392                "};",
1393                AllowsMergedIf);
1394   verifyFormat("MYIF (a) g();\n"
1395                "else g();",
1396                AllowsMergedIf);
1397   verifyFormat("MYIF (a) {\n"
1398                "  g();\n"
1399                "} else g();",
1400                AllowsMergedIf);
1401   verifyFormat("MYIF (a) g();\n"
1402                "else {\n"
1403                "  g();\n"
1404                "}",
1405                AllowsMergedIf);
1406   verifyFormat("MYIF (a) {\n"
1407                "  g();\n"
1408                "} else {\n"
1409                "  g();\n"
1410                "}",
1411                AllowsMergedIf);
1412   verifyFormat("MYIF (a) g();\n"
1413                "else MYIF (b) g();\n"
1414                "else g();",
1415                AllowsMergedIf);
1416   verifyFormat("MYIF (a) g();\n"
1417                "else if (b) g();\n"
1418                "else g();",
1419                AllowsMergedIf);
1420   verifyFormat("MYIF (a) {\n"
1421                "  g();\n"
1422                "} else MYIF (b) g();\n"
1423                "else g();",
1424                AllowsMergedIf);
1425   verifyFormat("MYIF (a) {\n"
1426                "  g();\n"
1427                "} else if (b) g();\n"
1428                "else g();",
1429                AllowsMergedIf);
1430   verifyFormat("MYIF (a) g();\n"
1431                "else MYIF (b) {\n"
1432                "  g();\n"
1433                "} else g();",
1434                AllowsMergedIf);
1435   verifyFormat("MYIF (a) g();\n"
1436                "else if (b) {\n"
1437                "  g();\n"
1438                "} else g();",
1439                AllowsMergedIf);
1440   verifyFormat("MYIF (a) g();\n"
1441                "else MYIF (b) g();\n"
1442                "else {\n"
1443                "  g();\n"
1444                "}",
1445                AllowsMergedIf);
1446   verifyFormat("MYIF (a) g();\n"
1447                "else if (b) g();\n"
1448                "else {\n"
1449                "  g();\n"
1450                "}",
1451                AllowsMergedIf);
1452   verifyFormat("MYIF (a) g();\n"
1453                "else MYIF (b) {\n"
1454                "  g();\n"
1455                "} else {\n"
1456                "  g();\n"
1457                "}",
1458                AllowsMergedIf);
1459   verifyFormat("MYIF (a) g();\n"
1460                "else if (b) {\n"
1461                "  g();\n"
1462                "} else {\n"
1463                "  g();\n"
1464                "}",
1465                AllowsMergedIf);
1466   verifyFormat("MYIF (a) {\n"
1467                "  g();\n"
1468                "} else MYIF (b) {\n"
1469                "  g();\n"
1470                "} else {\n"
1471                "  g();\n"
1472                "}",
1473                AllowsMergedIf);
1474   verifyFormat("MYIF (a) {\n"
1475                "  g();\n"
1476                "} else if (b) {\n"
1477                "  g();\n"
1478                "} else {\n"
1479                "  g();\n"
1480                "}",
1481                AllowsMergedIf);
1482 }
1483 
1484 TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) {
1485   FormatStyle AllowsMergedLoops = getLLVMStyle();
1486   AllowsMergedLoops.AllowShortLoopsOnASingleLine = true;
1487   verifyFormat("while (true) continue;", AllowsMergedLoops);
1488   verifyFormat("for (;;) continue;", AllowsMergedLoops);
1489   verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops);
1490   verifyFormat("BOOST_FOREACH (int &v, vec) v *= 2;", AllowsMergedLoops);
1491   verifyFormat("while (true)\n"
1492                "  ;",
1493                AllowsMergedLoops);
1494   verifyFormat("for (;;)\n"
1495                "  ;",
1496                AllowsMergedLoops);
1497   verifyFormat("for (;;)\n"
1498                "  for (;;) continue;",
1499                AllowsMergedLoops);
1500   verifyFormat("for (;;)\n"
1501                "  while (true) continue;",
1502                AllowsMergedLoops);
1503   verifyFormat("while (true)\n"
1504                "  for (;;) continue;",
1505                AllowsMergedLoops);
1506   verifyFormat("BOOST_FOREACH (int &v, vec)\n"
1507                "  for (;;) continue;",
1508                AllowsMergedLoops);
1509   verifyFormat("for (;;)\n"
1510                "  BOOST_FOREACH (int &v, vec) continue;",
1511                AllowsMergedLoops);
1512   verifyFormat("for (;;) // Can't merge this\n"
1513                "  continue;",
1514                AllowsMergedLoops);
1515   verifyFormat("for (;;) /* still don't merge */\n"
1516                "  continue;",
1517                AllowsMergedLoops);
1518   verifyFormat("do a++;\n"
1519                "while (true);",
1520                AllowsMergedLoops);
1521   verifyFormat("do /* Don't merge */\n"
1522                "  a++;\n"
1523                "while (true);",
1524                AllowsMergedLoops);
1525   verifyFormat("do // Don't merge\n"
1526                "  a++;\n"
1527                "while (true);",
1528                AllowsMergedLoops);
1529   verifyFormat("do\n"
1530                "  // Don't merge\n"
1531                "  a++;\n"
1532                "while (true);",
1533                AllowsMergedLoops);
1534   // Without braces labels are interpreted differently.
1535   verifyFormat("{\n"
1536                "  do\n"
1537                "  label:\n"
1538                "    a++;\n"
1539                "  while (true);\n"
1540                "}",
1541                AllowsMergedLoops);
1542 }
1543 
1544 TEST_F(FormatTest, FormatShortBracedStatements) {
1545   FormatStyle AllowSimpleBracedStatements = getLLVMStyle();
1546   EXPECT_EQ(AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine, false);
1547   EXPECT_EQ(AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine,
1548             FormatStyle::SIS_Never);
1549   EXPECT_EQ(AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine, false);
1550   EXPECT_EQ(AllowSimpleBracedStatements.BraceWrapping.AfterFunction, false);
1551   verifyFormat("for (;;) {\n"
1552                "  f();\n"
1553                "}");
1554   verifyFormat("/*comment*/ for (;;) {\n"
1555                "  f();\n"
1556                "}");
1557   verifyFormat("BOOST_FOREACH (int v, vec) {\n"
1558                "  f();\n"
1559                "}");
1560   verifyFormat("/*comment*/ BOOST_FOREACH (int v, vec) {\n"
1561                "  f();\n"
1562                "}");
1563   verifyFormat("while (true) {\n"
1564                "  f();\n"
1565                "}");
1566   verifyFormat("/*comment*/ while (true) {\n"
1567                "  f();\n"
1568                "}");
1569   verifyFormat("if (true) {\n"
1570                "  f();\n"
1571                "}");
1572   verifyFormat("/*comment*/ if (true) {\n"
1573                "  f();\n"
1574                "}");
1575 
1576   AllowSimpleBracedStatements.IfMacros.push_back("MYIF");
1577   // Where line-lengths matter, a 2-letter synonym that maintains line length.
1578   // Not IF to avoid any confusion that IF is somehow special.
1579   AllowSimpleBracedStatements.IfMacros.push_back("FI");
1580   AllowSimpleBracedStatements.ColumnLimit = 40;
1581   AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine =
1582       FormatStyle::SBS_Always;
1583 
1584   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
1585       FormatStyle::SIS_WithoutElse;
1586   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true;
1587 
1588   AllowSimpleBracedStatements.BreakBeforeBraces = FormatStyle::BS_Custom;
1589   AllowSimpleBracedStatements.BraceWrapping.AfterFunction = true;
1590   AllowSimpleBracedStatements.BraceWrapping.SplitEmptyRecord = false;
1591 
1592   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
1593   verifyFormat("if constexpr (true) {}", AllowSimpleBracedStatements);
1594   verifyFormat("if CONSTEXPR (true) {}", AllowSimpleBracedStatements);
1595   verifyFormat("if consteval {}", AllowSimpleBracedStatements);
1596   verifyFormat("if !consteval {}", AllowSimpleBracedStatements);
1597   verifyFormat("if CONSTEVAL {}", AllowSimpleBracedStatements);
1598   verifyFormat("MYIF (true) {}", AllowSimpleBracedStatements);
1599   verifyFormat("MYIF constexpr (true) {}", AllowSimpleBracedStatements);
1600   verifyFormat("MYIF CONSTEXPR (true) {}", AllowSimpleBracedStatements);
1601   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
1602   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
1603   verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements);
1604   verifyFormat("if constexpr (true) { f(); }", AllowSimpleBracedStatements);
1605   verifyFormat("if CONSTEXPR (true) { f(); }", AllowSimpleBracedStatements);
1606   verifyFormat("if consteval { f(); }", AllowSimpleBracedStatements);
1607   verifyFormat("if CONSTEVAL { f(); }", AllowSimpleBracedStatements);
1608   verifyFormat("MYIF (true) { f(); }", AllowSimpleBracedStatements);
1609   verifyFormat("MYIF constexpr (true) { f(); }", AllowSimpleBracedStatements);
1610   verifyFormat("MYIF CONSTEXPR (true) { f(); }", AllowSimpleBracedStatements);
1611   verifyFormat("MYIF consteval { f(); }", AllowSimpleBracedStatements);
1612   verifyFormat("MYIF CONSTEVAL { f(); }", AllowSimpleBracedStatements);
1613   verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements);
1614   verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements);
1615   verifyFormat("if (true) { fffffffffffffffffffffff(); }",
1616                AllowSimpleBracedStatements);
1617   verifyFormat("if (true) {\n"
1618                "  ffffffffffffffffffffffff();\n"
1619                "}",
1620                AllowSimpleBracedStatements);
1621   verifyFormat("if (true) {\n"
1622                "  ffffffffffffffffffffffffffffffffffffffffffffffffffffff();\n"
1623                "}",
1624                AllowSimpleBracedStatements);
1625   verifyFormat("if (true) { //\n"
1626                "  f();\n"
1627                "}",
1628                AllowSimpleBracedStatements);
1629   verifyFormat("if (true) {\n"
1630                "  f();\n"
1631                "  f();\n"
1632                "}",
1633                AllowSimpleBracedStatements);
1634   verifyFormat("if (true) {\n"
1635                "  f();\n"
1636                "} else {\n"
1637                "  f();\n"
1638                "}",
1639                AllowSimpleBracedStatements);
1640   verifyFormat("FI (true) { fffffffffffffffffffffff(); }",
1641                AllowSimpleBracedStatements);
1642   verifyFormat("MYIF (true) {\n"
1643                "  ffffffffffffffffffffffff();\n"
1644                "}",
1645                AllowSimpleBracedStatements);
1646   verifyFormat("MYIF (true) {\n"
1647                "  ffffffffffffffffffffffffffffffffffffffffffffffffffffff();\n"
1648                "}",
1649                AllowSimpleBracedStatements);
1650   verifyFormat("MYIF (true) { //\n"
1651                "  f();\n"
1652                "}",
1653                AllowSimpleBracedStatements);
1654   verifyFormat("MYIF (true) {\n"
1655                "  f();\n"
1656                "  f();\n"
1657                "}",
1658                AllowSimpleBracedStatements);
1659   verifyFormat("MYIF (true) {\n"
1660                "  f();\n"
1661                "} else {\n"
1662                "  f();\n"
1663                "}",
1664                AllowSimpleBracedStatements);
1665 
1666   verifyFormat("struct A2 {\n"
1667                "  int X;\n"
1668                "};",
1669                AllowSimpleBracedStatements);
1670   verifyFormat("typedef struct A2 {\n"
1671                "  int X;\n"
1672                "} A2_t;",
1673                AllowSimpleBracedStatements);
1674   verifyFormat("template <int> struct A2 {\n"
1675                "  struct B {};\n"
1676                "};",
1677                AllowSimpleBracedStatements);
1678 
1679   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
1680       FormatStyle::SIS_Never;
1681   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
1682   verifyFormat("if (true) {\n"
1683                "  f();\n"
1684                "}",
1685                AllowSimpleBracedStatements);
1686   verifyFormat("if (true) {\n"
1687                "  f();\n"
1688                "} else {\n"
1689                "  f();\n"
1690                "}",
1691                AllowSimpleBracedStatements);
1692   verifyFormat("MYIF (true) {}", AllowSimpleBracedStatements);
1693   verifyFormat("MYIF (true) {\n"
1694                "  f();\n"
1695                "}",
1696                AllowSimpleBracedStatements);
1697   verifyFormat("MYIF (true) {\n"
1698                "  f();\n"
1699                "} else {\n"
1700                "  f();\n"
1701                "}",
1702                AllowSimpleBracedStatements);
1703 
1704   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false;
1705   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
1706   verifyFormat("while (true) {\n"
1707                "  f();\n"
1708                "}",
1709                AllowSimpleBracedStatements);
1710   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
1711   verifyFormat("for (;;) {\n"
1712                "  f();\n"
1713                "}",
1714                AllowSimpleBracedStatements);
1715   verifyFormat("BOOST_FOREACH (int v, vec) {}", AllowSimpleBracedStatements);
1716   verifyFormat("BOOST_FOREACH (int v, vec) {\n"
1717                "  f();\n"
1718                "}",
1719                AllowSimpleBracedStatements);
1720 
1721   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
1722       FormatStyle::SIS_WithoutElse;
1723   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true;
1724   AllowSimpleBracedStatements.BraceWrapping.AfterControlStatement =
1725       FormatStyle::BWACS_Always;
1726 
1727   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
1728   verifyFormat("if constexpr (true) {}", AllowSimpleBracedStatements);
1729   verifyFormat("if CONSTEXPR (true) {}", AllowSimpleBracedStatements);
1730   verifyFormat("MYIF (true) {}", AllowSimpleBracedStatements);
1731   verifyFormat("MYIF constexpr (true) {}", AllowSimpleBracedStatements);
1732   verifyFormat("MYIF CONSTEXPR (true) {}", AllowSimpleBracedStatements);
1733   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
1734   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
1735   verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements);
1736   verifyFormat("if constexpr (true) { f(); }", AllowSimpleBracedStatements);
1737   verifyFormat("if CONSTEXPR (true) { f(); }", AllowSimpleBracedStatements);
1738   verifyFormat("MYIF (true) { f(); }", AllowSimpleBracedStatements);
1739   verifyFormat("MYIF constexpr (true) { f(); }", AllowSimpleBracedStatements);
1740   verifyFormat("MYIF CONSTEXPR (true) { f(); }", AllowSimpleBracedStatements);
1741   verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements);
1742   verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements);
1743   verifyFormat("if (true) { fffffffffffffffffffffff(); }",
1744                AllowSimpleBracedStatements);
1745   verifyFormat("if (true)\n"
1746                "{\n"
1747                "  ffffffffffffffffffffffff();\n"
1748                "}",
1749                AllowSimpleBracedStatements);
1750   verifyFormat("if (true)\n"
1751                "{\n"
1752                "  ffffffffffffffffffffffffffffffffffffffffffffffffffffff();\n"
1753                "}",
1754                AllowSimpleBracedStatements);
1755   verifyFormat("if (true)\n"
1756                "{ //\n"
1757                "  f();\n"
1758                "}",
1759                AllowSimpleBracedStatements);
1760   verifyFormat("if (true)\n"
1761                "{\n"
1762                "  f();\n"
1763                "  f();\n"
1764                "}",
1765                AllowSimpleBracedStatements);
1766   verifyFormat("if (true)\n"
1767                "{\n"
1768                "  f();\n"
1769                "} else\n"
1770                "{\n"
1771                "  f();\n"
1772                "}",
1773                AllowSimpleBracedStatements);
1774   verifyFormat("FI (true) { fffffffffffffffffffffff(); }",
1775                AllowSimpleBracedStatements);
1776   verifyFormat("MYIF (true)\n"
1777                "{\n"
1778                "  ffffffffffffffffffffffff();\n"
1779                "}",
1780                AllowSimpleBracedStatements);
1781   verifyFormat("MYIF (true)\n"
1782                "{\n"
1783                "  ffffffffffffffffffffffffffffffffffffffffffffffffffffff();\n"
1784                "}",
1785                AllowSimpleBracedStatements);
1786   verifyFormat("MYIF (true)\n"
1787                "{ //\n"
1788                "  f();\n"
1789                "}",
1790                AllowSimpleBracedStatements);
1791   verifyFormat("MYIF (true)\n"
1792                "{\n"
1793                "  f();\n"
1794                "  f();\n"
1795                "}",
1796                AllowSimpleBracedStatements);
1797   verifyFormat("MYIF (true)\n"
1798                "{\n"
1799                "  f();\n"
1800                "} else\n"
1801                "{\n"
1802                "  f();\n"
1803                "}",
1804                AllowSimpleBracedStatements);
1805 
1806   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
1807       FormatStyle::SIS_Never;
1808   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
1809   verifyFormat("if (true)\n"
1810                "{\n"
1811                "  f();\n"
1812                "}",
1813                AllowSimpleBracedStatements);
1814   verifyFormat("if (true)\n"
1815                "{\n"
1816                "  f();\n"
1817                "} else\n"
1818                "{\n"
1819                "  f();\n"
1820                "}",
1821                AllowSimpleBracedStatements);
1822   verifyFormat("MYIF (true) {}", AllowSimpleBracedStatements);
1823   verifyFormat("MYIF (true)\n"
1824                "{\n"
1825                "  f();\n"
1826                "}",
1827                AllowSimpleBracedStatements);
1828   verifyFormat("MYIF (true)\n"
1829                "{\n"
1830                "  f();\n"
1831                "} else\n"
1832                "{\n"
1833                "  f();\n"
1834                "}",
1835                AllowSimpleBracedStatements);
1836 
1837   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false;
1838   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
1839   verifyFormat("while (true)\n"
1840                "{\n"
1841                "  f();\n"
1842                "}",
1843                AllowSimpleBracedStatements);
1844   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
1845   verifyFormat("for (;;)\n"
1846                "{\n"
1847                "  f();\n"
1848                "}",
1849                AllowSimpleBracedStatements);
1850   verifyFormat("BOOST_FOREACH (int v, vec) {}", AllowSimpleBracedStatements);
1851   verifyFormat("BOOST_FOREACH (int v, vec)\n"
1852                "{\n"
1853                "  f();\n"
1854                "}",
1855                AllowSimpleBracedStatements);
1856 }
1857 
1858 TEST_F(FormatTest, UnderstandsMacros) {
1859   verifyFormat("#define A (parentheses)");
1860   verifyFormat("/* comment */ #define A (parentheses)");
1861   verifyFormat("/* comment */ /* another comment */ #define A (parentheses)");
1862   // Even the partial code should never be merged.
1863   EXPECT_EQ("/* comment */ #define A (parentheses)\n"
1864             "#",
1865             format("/* comment */ #define A (parentheses)\n"
1866                    "#"));
1867   verifyFormat("/* comment */ #define A (parentheses)\n"
1868                "#\n");
1869   verifyFormat("/* comment */ #define A (parentheses)\n"
1870                "#define B (parentheses)");
1871   verifyFormat("#define true ((int)1)");
1872   verifyFormat("#define and(x)");
1873   verifyFormat("#define if(x) x");
1874   verifyFormat("#define return(x) (x)");
1875   verifyFormat("#define while(x) for (; x;)");
1876   verifyFormat("#define xor(x) (^(x))");
1877   verifyFormat("#define __except(x)");
1878   verifyFormat("#define __try(x)");
1879 
1880   // https://llvm.org/PR54348.
1881   verifyFormat(
1882       "#define A"
1883       "                                                                      "
1884       "\\\n"
1885       "  class & {}");
1886 
1887   FormatStyle Style = getLLVMStyle();
1888   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
1889   Style.BraceWrapping.AfterFunction = true;
1890   // Test that a macro definition never gets merged with the following
1891   // definition.
1892   // FIXME: The AAA macro definition probably should not be split into 3 lines.
1893   verifyFormat("#define AAA                                                    "
1894                "                \\\n"
1895                "  N                                                            "
1896                "                \\\n"
1897                "  {\n"
1898                "#define BBB }\n",
1899                Style);
1900   // verifyFormat("#define AAA N { //\n", Style);
1901 
1902   verifyFormat("MACRO(return)");
1903   verifyFormat("MACRO(co_await)");
1904   verifyFormat("MACRO(co_return)");
1905   verifyFormat("MACRO(co_yield)");
1906   verifyFormat("MACRO(return, something)");
1907   verifyFormat("MACRO(co_return, something)");
1908   verifyFormat("MACRO(something##something)");
1909   verifyFormat("MACRO(return##something)");
1910   verifyFormat("MACRO(co_return##something)");
1911 }
1912 
1913 TEST_F(FormatTest, ShortBlocksInMacrosDontMergeWithCodeAfterMacro) {
1914   FormatStyle Style = getLLVMStyleWithColumns(60);
1915   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
1916   Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_WithoutElse;
1917   Style.BreakBeforeBraces = FormatStyle::BS_Allman;
1918   EXPECT_EQ("#define A                                                  \\\n"
1919             "  if (HANDLEwernufrnuLwrmviferuvnierv)                     \\\n"
1920             "  {                                                        \\\n"
1921             "    RET_ERR1_ANUIREUINERUIFNIOAerwfwrvnuier;               \\\n"
1922             "  }\n"
1923             "X;",
1924             format("#define A \\\n"
1925                    "   if (HANDLEwernufrnuLwrmviferuvnierv) { \\\n"
1926                    "      RET_ERR1_ANUIREUINERUIFNIOAerwfwrvnuier; \\\n"
1927                    "   }\n"
1928                    "X;",
1929                    Style));
1930 }
1931 
1932 TEST_F(FormatTest, ParseIfElse) {
1933   verifyFormat("if (true)\n"
1934                "  if (true)\n"
1935                "    if (true)\n"
1936                "      f();\n"
1937                "    else\n"
1938                "      g();\n"
1939                "  else\n"
1940                "    h();\n"
1941                "else\n"
1942                "  i();");
1943   verifyFormat("if (true)\n"
1944                "  if (true)\n"
1945                "    if (true) {\n"
1946                "      if (true)\n"
1947                "        f();\n"
1948                "    } else {\n"
1949                "      g();\n"
1950                "    }\n"
1951                "  else\n"
1952                "    h();\n"
1953                "else {\n"
1954                "  i();\n"
1955                "}");
1956   verifyFormat("if (true)\n"
1957                "  if constexpr (true)\n"
1958                "    if (true) {\n"
1959                "      if constexpr (true)\n"
1960                "        f();\n"
1961                "    } else {\n"
1962                "      g();\n"
1963                "    }\n"
1964                "  else\n"
1965                "    h();\n"
1966                "else {\n"
1967                "  i();\n"
1968                "}");
1969   verifyFormat("if (true)\n"
1970                "  if CONSTEXPR (true)\n"
1971                "    if (true) {\n"
1972                "      if CONSTEXPR (true)\n"
1973                "        f();\n"
1974                "    } else {\n"
1975                "      g();\n"
1976                "    }\n"
1977                "  else\n"
1978                "    h();\n"
1979                "else {\n"
1980                "  i();\n"
1981                "}");
1982   verifyFormat("void f() {\n"
1983                "  if (a) {\n"
1984                "  } else {\n"
1985                "  }\n"
1986                "}");
1987 }
1988 
1989 TEST_F(FormatTest, ElseIf) {
1990   verifyFormat("if (a) {\n} else if (b) {\n}");
1991   verifyFormat("if (a)\n"
1992                "  f();\n"
1993                "else if (b)\n"
1994                "  g();\n"
1995                "else\n"
1996                "  h();");
1997   verifyFormat("if (a)\n"
1998                "  f();\n"
1999                "else // comment\n"
2000                "  if (b) {\n"
2001                "    g();\n"
2002                "    h();\n"
2003                "  }");
2004   verifyFormat("if constexpr (a)\n"
2005                "  f();\n"
2006                "else if constexpr (b)\n"
2007                "  g();\n"
2008                "else\n"
2009                "  h();");
2010   verifyFormat("if CONSTEXPR (a)\n"
2011                "  f();\n"
2012                "else if CONSTEXPR (b)\n"
2013                "  g();\n"
2014                "else\n"
2015                "  h();");
2016   verifyFormat("if (a) {\n"
2017                "  f();\n"
2018                "}\n"
2019                "// or else ..\n"
2020                "else {\n"
2021                "  g()\n"
2022                "}");
2023 
2024   verifyFormat("if (a) {\n"
2025                "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2026                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
2027                "}");
2028   verifyFormat("if (a) {\n"
2029                "} else if constexpr (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2030                "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
2031                "}");
2032   verifyFormat("if (a) {\n"
2033                "} else if CONSTEXPR (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2034                "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
2035                "}");
2036   verifyFormat("if (a) {\n"
2037                "} else if (\n"
2038                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
2039                "}",
2040                getLLVMStyleWithColumns(62));
2041   verifyFormat("if (a) {\n"
2042                "} else if constexpr (\n"
2043                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
2044                "}",
2045                getLLVMStyleWithColumns(62));
2046   verifyFormat("if (a) {\n"
2047                "} else if CONSTEXPR (\n"
2048                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
2049                "}",
2050                getLLVMStyleWithColumns(62));
2051 }
2052 
2053 TEST_F(FormatTest, SeparatePointerReferenceAlignment) {
2054   FormatStyle Style = getLLVMStyle();
2055   EXPECT_EQ(Style.PointerAlignment, FormatStyle::PAS_Right);
2056   EXPECT_EQ(Style.ReferenceAlignment, FormatStyle::RAS_Pointer);
2057   verifyFormat("int *f1(int *a, int &b, int &&c);", Style);
2058   verifyFormat("int &f2(int &&c, int *a, int &b);", Style);
2059   verifyFormat("int &&f3(int &b, int &&c, int *a);", Style);
2060   verifyFormat("int *f1(int &a) const &;", Style);
2061   verifyFormat("int *f1(int &a) const & = 0;", Style);
2062   verifyFormat("int *a = f1();", Style);
2063   verifyFormat("int &b = f2();", Style);
2064   verifyFormat("int &&c = f3();", Style);
2065   verifyFormat("for (auto a = 0, b = 0; const auto &c : {1, 2, 3})", Style);
2066   verifyFormat("for (auto a = 0, b = 0; const int &c : {1, 2, 3})", Style);
2067   verifyFormat("for (auto a = 0, b = 0; const Foo &c : {1, 2, 3})", Style);
2068   verifyFormat("for (auto a = 0, b = 0; const Foo *c : {1, 2, 3})", Style);
2069   verifyFormat("for (int a = 0, b = 0; const auto &c : {1, 2, 3})", Style);
2070   verifyFormat("for (int a = 0, b = 0; const int &c : {1, 2, 3})", Style);
2071   verifyFormat("for (int a = 0, b = 0; const Foo &c : {1, 2, 3})", Style);
2072   verifyFormat("for (int a = 0, b++; const auto &c : {1, 2, 3})", Style);
2073   verifyFormat("for (int a = 0, b++; const int &c : {1, 2, 3})", Style);
2074   verifyFormat("for (int a = 0, b++; const Foo &c : {1, 2, 3})", Style);
2075   verifyFormat("for (auto x = 0; auto &c : {1, 2, 3})", Style);
2076   verifyFormat("for (auto x = 0; int &c : {1, 2, 3})", Style);
2077   verifyFormat("for (int x = 0; auto &c : {1, 2, 3})", Style);
2078   verifyFormat("for (int x = 0; int &c : {1, 2, 3})", Style);
2079   verifyFormat("for (f(); auto &c : {1, 2, 3})", Style);
2080   verifyFormat("for (f(); int &c : {1, 2, 3})", Style);
2081   verifyFormat(
2082       "function<int(int &)> res1 = [](int &a) { return 0000000000000; },\n"
2083       "                     res2 = [](int &a) { return 0000000000000; };",
2084       Style);
2085 
2086   Style.AlignConsecutiveDeclarations.Enabled = true;
2087   verifyFormat("Const unsigned int *c;\n"
2088                "const unsigned int *d;\n"
2089                "Const unsigned int &e;\n"
2090                "const unsigned int &f;\n"
2091                "const unsigned    &&g;\n"
2092                "Const unsigned      h;",
2093                Style);
2094 
2095   Style.PointerAlignment = FormatStyle::PAS_Left;
2096   Style.ReferenceAlignment = FormatStyle::RAS_Pointer;
2097   verifyFormat("int* f1(int* a, int& b, int&& c);", Style);
2098   verifyFormat("int& f2(int&& c, int* a, int& b);", Style);
2099   verifyFormat("int&& f3(int& b, int&& c, int* a);", Style);
2100   verifyFormat("int* f1(int& a) const& = 0;", Style);
2101   verifyFormat("int* a = f1();", Style);
2102   verifyFormat("int& b = f2();", Style);
2103   verifyFormat("int&& c = f3();", Style);
2104   verifyFormat("for (auto a = 0, b = 0; const auto& c : {1, 2, 3})", Style);
2105   verifyFormat("for (auto a = 0, b = 0; const int& c : {1, 2, 3})", Style);
2106   verifyFormat("for (auto a = 0, b = 0; const Foo& c : {1, 2, 3})", Style);
2107   verifyFormat("for (auto a = 0, b = 0; const Foo* c : {1, 2, 3})", Style);
2108   verifyFormat("for (int a = 0, b = 0; const auto& c : {1, 2, 3})", Style);
2109   verifyFormat("for (int a = 0, b = 0; const int& c : {1, 2, 3})", Style);
2110   verifyFormat("for (int a = 0, b = 0; const Foo& c : {1, 2, 3})", Style);
2111   verifyFormat("for (int a = 0, b = 0; const Foo* c : {1, 2, 3})", Style);
2112   verifyFormat("for (int a = 0, b++; const auto& c : {1, 2, 3})", Style);
2113   verifyFormat("for (int a = 0, b++; const int& c : {1, 2, 3})", Style);
2114   verifyFormat("for (int a = 0, b++; const Foo& c : {1, 2, 3})", Style);
2115   verifyFormat("for (int a = 0, b++; const Foo* c : {1, 2, 3})", Style);
2116   verifyFormat("for (auto x = 0; auto& c : {1, 2, 3})", Style);
2117   verifyFormat("for (auto x = 0; int& c : {1, 2, 3})", Style);
2118   verifyFormat("for (int x = 0; auto& c : {1, 2, 3})", Style);
2119   verifyFormat("for (int x = 0; int& c : {1, 2, 3})", Style);
2120   verifyFormat("for (f(); auto& c : {1, 2, 3})", Style);
2121   verifyFormat("for (f(); int& c : {1, 2, 3})", Style);
2122   verifyFormat(
2123       "function<int(int&)> res1 = [](int& a) { return 0000000000000; },\n"
2124       "                    res2 = [](int& a) { return 0000000000000; };",
2125       Style);
2126 
2127   Style.AlignConsecutiveDeclarations.Enabled = true;
2128   verifyFormat("Const unsigned int* c;\n"
2129                "const unsigned int* d;\n"
2130                "Const unsigned int& e;\n"
2131                "const unsigned int& f;\n"
2132                "const unsigned&&    g;\n"
2133                "Const unsigned      h;",
2134                Style);
2135 
2136   Style.PointerAlignment = FormatStyle::PAS_Right;
2137   Style.ReferenceAlignment = FormatStyle::RAS_Left;
2138   verifyFormat("int *f1(int *a, int& b, int&& c);", Style);
2139   verifyFormat("int& f2(int&& c, int *a, int& b);", Style);
2140   verifyFormat("int&& f3(int& b, int&& c, int *a);", Style);
2141   verifyFormat("int *a = f1();", Style);
2142   verifyFormat("int& b = f2();", Style);
2143   verifyFormat("int&& c = f3();", Style);
2144   verifyFormat("for (auto a = 0, b = 0; const Foo *c : {1, 2, 3})", Style);
2145   verifyFormat("for (int a = 0, b = 0; const Foo *c : {1, 2, 3})", Style);
2146   verifyFormat("for (int a = 0, b++; const Foo *c : {1, 2, 3})", Style);
2147 
2148   Style.AlignConsecutiveDeclarations.Enabled = true;
2149   verifyFormat("Const unsigned int *c;\n"
2150                "const unsigned int *d;\n"
2151                "Const unsigned int& e;\n"
2152                "const unsigned int& f;\n"
2153                "const unsigned      g;\n"
2154                "Const unsigned      h;",
2155                Style);
2156 
2157   Style.PointerAlignment = FormatStyle::PAS_Left;
2158   Style.ReferenceAlignment = FormatStyle::RAS_Middle;
2159   verifyFormat("int* f1(int* a, int & b, int && c);", Style);
2160   verifyFormat("int & f2(int && c, int* a, int & b);", Style);
2161   verifyFormat("int && f3(int & b, int && c, int* a);", Style);
2162   verifyFormat("int* a = f1();", Style);
2163   verifyFormat("int & b = f2();", Style);
2164   verifyFormat("int && c = f3();", Style);
2165   verifyFormat("for (auto a = 0, b = 0; const auto & c : {1, 2, 3})", Style);
2166   verifyFormat("for (auto a = 0, b = 0; const int & c : {1, 2, 3})", Style);
2167   verifyFormat("for (auto a = 0, b = 0; const Foo & c : {1, 2, 3})", Style);
2168   verifyFormat("for (auto a = 0, b = 0; const Foo* c : {1, 2, 3})", Style);
2169   verifyFormat("for (int a = 0, b++; const auto & c : {1, 2, 3})", Style);
2170   verifyFormat("for (int a = 0, b++; const int & c : {1, 2, 3})", Style);
2171   verifyFormat("for (int a = 0, b++; const Foo & c : {1, 2, 3})", Style);
2172   verifyFormat("for (int a = 0, b++; const Foo* c : {1, 2, 3})", Style);
2173   verifyFormat("for (auto x = 0; auto & c : {1, 2, 3})", Style);
2174   verifyFormat("for (auto x = 0; int & c : {1, 2, 3})", Style);
2175   verifyFormat("for (int x = 0; auto & c : {1, 2, 3})", Style);
2176   verifyFormat("for (int x = 0; int & c : {1, 2, 3})", Style);
2177   verifyFormat("for (f(); auto & c : {1, 2, 3})", Style);
2178   verifyFormat("for (f(); int & c : {1, 2, 3})", Style);
2179   verifyFormat(
2180       "function<int(int &)> res1 = [](int & a) { return 0000000000000; },\n"
2181       "                     res2 = [](int & a) { return 0000000000000; };",
2182       Style);
2183 
2184   Style.AlignConsecutiveDeclarations.Enabled = true;
2185   verifyFormat("Const unsigned int*  c;\n"
2186                "const unsigned int*  d;\n"
2187                "Const unsigned int & e;\n"
2188                "const unsigned int & f;\n"
2189                "const unsigned &&    g;\n"
2190                "Const unsigned       h;",
2191                Style);
2192 
2193   Style.PointerAlignment = FormatStyle::PAS_Middle;
2194   Style.ReferenceAlignment = FormatStyle::RAS_Right;
2195   verifyFormat("int * f1(int * a, int &b, int &&c);", Style);
2196   verifyFormat("int &f2(int &&c, int * a, int &b);", Style);
2197   verifyFormat("int &&f3(int &b, int &&c, int * a);", Style);
2198   verifyFormat("int * a = f1();", Style);
2199   verifyFormat("int &b = f2();", Style);
2200   verifyFormat("int &&c = f3();", Style);
2201   verifyFormat("for (auto a = 0, b = 0; const Foo * c : {1, 2, 3})", Style);
2202   verifyFormat("for (int a = 0, b = 0; const Foo * c : {1, 2, 3})", Style);
2203   verifyFormat("for (int a = 0, b++; const Foo * c : {1, 2, 3})", Style);
2204 
2205   // FIXME: we don't handle this yet, so output may be arbitrary until it's
2206   // specifically handled
2207   // verifyFormat("int Add2(BTree * &Root, char * szToAdd)", Style);
2208 }
2209 
2210 TEST_F(FormatTest, FormatsForLoop) {
2211   verifyFormat(
2212       "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n"
2213       "     ++VeryVeryLongLoopVariable)\n"
2214       "  ;");
2215   verifyFormat("for (;;)\n"
2216                "  f();");
2217   verifyFormat("for (;;) {\n}");
2218   verifyFormat("for (;;) {\n"
2219                "  f();\n"
2220                "}");
2221   verifyFormat("for (int i = 0; (i < 10); ++i) {\n}");
2222 
2223   verifyFormat(
2224       "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
2225       "                                          E = UnwrappedLines.end();\n"
2226       "     I != E; ++I) {\n}");
2227 
2228   verifyFormat(
2229       "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n"
2230       "     ++IIIII) {\n}");
2231   verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n"
2232                "         aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n"
2233                "     aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}");
2234   verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n"
2235                "         I = FD->getDeclsInPrototypeScope().begin(),\n"
2236                "         E = FD->getDeclsInPrototypeScope().end();\n"
2237                "     I != E; ++I) {\n}");
2238   verifyFormat("for (SmallVectorImpl<TemplateIdAnnotationn *>::iterator\n"
2239                "         I = Container.begin(),\n"
2240                "         E = Container.end();\n"
2241                "     I != E; ++I) {\n}",
2242                getLLVMStyleWithColumns(76));
2243 
2244   verifyFormat(
2245       "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
2246       "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n"
2247       "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2248       "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
2249       "     ++aaaaaaaaaaa) {\n}");
2250   verifyFormat("for (int i = 0; i < aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2251                "                bbbbbbbbbbbbbbbbbbbb < ccccccccccccccc;\n"
2252                "     ++i) {\n}");
2253   verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n"
2254                "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
2255                "}");
2256   verifyFormat("for (some_namespace::SomeIterator iter( // force break\n"
2257                "         aaaaaaaaaa);\n"
2258                "     iter; ++iter) {\n"
2259                "}");
2260   verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2261                "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
2262                "     aaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbbbbbbb;\n"
2263                "     ++aaaaaaaaaaaaaaaaaaaaaaaaaaa) {");
2264 
2265   // These should not be formatted as Objective-C for-in loops.
2266   verifyFormat("for (Foo *x = 0; x != in; x++) {\n}");
2267   verifyFormat("Foo *x;\nfor (x = 0; x != in; x++) {\n}");
2268   verifyFormat("Foo *x;\nfor (x in y) {\n}");
2269   verifyFormat(
2270       "for (const Foo<Bar> &baz = in.value(); !baz.at_end(); ++baz) {\n}");
2271 
2272   FormatStyle NoBinPacking = getLLVMStyle();
2273   NoBinPacking.BinPackParameters = false;
2274   verifyFormat("for (int aaaaaaaaaaa = 1;\n"
2275                "     aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n"
2276                "                                           aaaaaaaaaaaaaaaa,\n"
2277                "                                           aaaaaaaaaaaaaaaa,\n"
2278                "                                           aaaaaaaaaaaaaaaa);\n"
2279                "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
2280                "}",
2281                NoBinPacking);
2282   verifyFormat(
2283       "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
2284       "                                          E = UnwrappedLines.end();\n"
2285       "     I != E;\n"
2286       "     ++I) {\n}",
2287       NoBinPacking);
2288 
2289   FormatStyle AlignLeft = getLLVMStyle();
2290   AlignLeft.PointerAlignment = FormatStyle::PAS_Left;
2291   verifyFormat("for (A* a = start; a < end; ++a, ++value) {\n}", AlignLeft);
2292 }
2293 
2294 TEST_F(FormatTest, RangeBasedForLoops) {
2295   verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
2296                "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
2297   verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n"
2298                "     aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}");
2299   verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n"
2300                "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
2301   verifyFormat("for (aaaaaaaaa aaaaaaaaaaaaaaaaaaaaa :\n"
2302                "     aaaaaaaaaaaa.aaaaaaaaaaaa().aaaaaaaaa().a()) {\n}");
2303 }
2304 
2305 TEST_F(FormatTest, ForEachLoops) {
2306   FormatStyle Style = getLLVMStyle();
2307   EXPECT_EQ(Style.AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
2308   EXPECT_EQ(Style.AllowShortLoopsOnASingleLine, false);
2309   verifyFormat("void f() {\n"
2310                "  for (;;) {\n"
2311                "  }\n"
2312                "  foreach (Item *item, itemlist) {\n"
2313                "  }\n"
2314                "  Q_FOREACH (Item *item, itemlist) {\n"
2315                "  }\n"
2316                "  BOOST_FOREACH (Item *item, itemlist) {\n"
2317                "  }\n"
2318                "  UNKNOWN_FOREACH(Item * item, itemlist) {}\n"
2319                "}",
2320                Style);
2321   verifyFormat("void f() {\n"
2322                "  for (;;)\n"
2323                "    int j = 1;\n"
2324                "  Q_FOREACH (int v, vec)\n"
2325                "    v *= 2;\n"
2326                "  for (;;) {\n"
2327                "    int j = 1;\n"
2328                "  }\n"
2329                "  Q_FOREACH (int v, vec) {\n"
2330                "    v *= 2;\n"
2331                "  }\n"
2332                "}",
2333                Style);
2334 
2335   FormatStyle ShortBlocks = getLLVMStyle();
2336   ShortBlocks.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
2337   EXPECT_EQ(ShortBlocks.AllowShortLoopsOnASingleLine, false);
2338   verifyFormat("void f() {\n"
2339                "  for (;;)\n"
2340                "    int j = 1;\n"
2341                "  Q_FOREACH (int &v, vec)\n"
2342                "    v *= 2;\n"
2343                "  for (;;) {\n"
2344                "    int j = 1;\n"
2345                "  }\n"
2346                "  Q_FOREACH (int &v, vec) {\n"
2347                "    int j = 1;\n"
2348                "  }\n"
2349                "}",
2350                ShortBlocks);
2351 
2352   FormatStyle ShortLoops = getLLVMStyle();
2353   ShortLoops.AllowShortLoopsOnASingleLine = true;
2354   EXPECT_EQ(ShortLoops.AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
2355   verifyFormat("void f() {\n"
2356                "  for (;;) int j = 1;\n"
2357                "  Q_FOREACH (int &v, vec) int j = 1;\n"
2358                "  for (;;) {\n"
2359                "    int j = 1;\n"
2360                "  }\n"
2361                "  Q_FOREACH (int &v, vec) {\n"
2362                "    int j = 1;\n"
2363                "  }\n"
2364                "}",
2365                ShortLoops);
2366 
2367   FormatStyle ShortBlocksAndLoops = getLLVMStyle();
2368   ShortBlocksAndLoops.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
2369   ShortBlocksAndLoops.AllowShortLoopsOnASingleLine = true;
2370   verifyFormat("void f() {\n"
2371                "  for (;;) int j = 1;\n"
2372                "  Q_FOREACH (int &v, vec) int j = 1;\n"
2373                "  for (;;) { int j = 1; }\n"
2374                "  Q_FOREACH (int &v, vec) { int j = 1; }\n"
2375                "}",
2376                ShortBlocksAndLoops);
2377 
2378   Style.SpaceBeforeParens =
2379       FormatStyle::SBPO_ControlStatementsExceptControlMacros;
2380   verifyFormat("void f() {\n"
2381                "  for (;;) {\n"
2382                "  }\n"
2383                "  foreach(Item *item, itemlist) {\n"
2384                "  }\n"
2385                "  Q_FOREACH(Item *item, itemlist) {\n"
2386                "  }\n"
2387                "  BOOST_FOREACH(Item *item, itemlist) {\n"
2388                "  }\n"
2389                "  UNKNOWN_FOREACH(Item * item, itemlist) {}\n"
2390                "}",
2391                Style);
2392 
2393   // As function-like macros.
2394   verifyFormat("#define foreach(x, y)\n"
2395                "#define Q_FOREACH(x, y)\n"
2396                "#define BOOST_FOREACH(x, y)\n"
2397                "#define UNKNOWN_FOREACH(x, y)\n");
2398 
2399   // Not as function-like macros.
2400   verifyFormat("#define foreach (x, y)\n"
2401                "#define Q_FOREACH (x, y)\n"
2402                "#define BOOST_FOREACH (x, y)\n"
2403                "#define UNKNOWN_FOREACH (x, y)\n");
2404 
2405   // handle microsoft non standard extension
2406   verifyFormat("for each (char c in x->MyStringProperty)");
2407 }
2408 
2409 TEST_F(FormatTest, FormatsWhileLoop) {
2410   verifyFormat("while (true) {\n}");
2411   verifyFormat("while (true)\n"
2412                "  f();");
2413   verifyFormat("while () {\n}");
2414   verifyFormat("while () {\n"
2415                "  f();\n"
2416                "}");
2417 }
2418 
2419 TEST_F(FormatTest, FormatsDoWhile) {
2420   verifyFormat("do {\n"
2421                "  do_something();\n"
2422                "} while (something());");
2423   verifyFormat("do\n"
2424                "  do_something();\n"
2425                "while (something());");
2426 }
2427 
2428 TEST_F(FormatTest, FormatsSwitchStatement) {
2429   verifyFormat("switch (x) {\n"
2430                "case 1:\n"
2431                "  f();\n"
2432                "  break;\n"
2433                "case kFoo:\n"
2434                "case ns::kBar:\n"
2435                "case kBaz:\n"
2436                "  break;\n"
2437                "default:\n"
2438                "  g();\n"
2439                "  break;\n"
2440                "}");
2441   verifyFormat("switch (x) {\n"
2442                "case 1: {\n"
2443                "  f();\n"
2444                "  break;\n"
2445                "}\n"
2446                "case 2: {\n"
2447                "  break;\n"
2448                "}\n"
2449                "}");
2450   verifyFormat("switch (x) {\n"
2451                "case 1: {\n"
2452                "  f();\n"
2453                "  {\n"
2454                "    g();\n"
2455                "    h();\n"
2456                "  }\n"
2457                "  break;\n"
2458                "}\n"
2459                "}");
2460   verifyFormat("switch (x) {\n"
2461                "case 1: {\n"
2462                "  f();\n"
2463                "  if (foo) {\n"
2464                "    g();\n"
2465                "    h();\n"
2466                "  }\n"
2467                "  break;\n"
2468                "}\n"
2469                "}");
2470   verifyFormat("switch (x) {\n"
2471                "case 1: {\n"
2472                "  f();\n"
2473                "  g();\n"
2474                "} break;\n"
2475                "}");
2476   verifyFormat("switch (test)\n"
2477                "  ;");
2478   verifyFormat("switch (x) {\n"
2479                "default: {\n"
2480                "  // Do nothing.\n"
2481                "}\n"
2482                "}");
2483   verifyFormat("switch (x) {\n"
2484                "// comment\n"
2485                "// if 1, do f()\n"
2486                "case 1:\n"
2487                "  f();\n"
2488                "}");
2489   verifyFormat("switch (x) {\n"
2490                "case 1:\n"
2491                "  // Do amazing stuff\n"
2492                "  {\n"
2493                "    f();\n"
2494                "    g();\n"
2495                "  }\n"
2496                "  break;\n"
2497                "}");
2498   verifyFormat("#define A          \\\n"
2499                "  switch (x) {     \\\n"
2500                "  case a:          \\\n"
2501                "    foo = b;       \\\n"
2502                "  }",
2503                getLLVMStyleWithColumns(20));
2504   verifyFormat("#define OPERATION_CASE(name)           \\\n"
2505                "  case OP_name:                        \\\n"
2506                "    return operations::Operation##name\n",
2507                getLLVMStyleWithColumns(40));
2508   verifyFormat("switch (x) {\n"
2509                "case 1:;\n"
2510                "default:;\n"
2511                "  int i;\n"
2512                "}");
2513 
2514   verifyGoogleFormat("switch (x) {\n"
2515                      "  case 1:\n"
2516                      "    f();\n"
2517                      "    break;\n"
2518                      "  case kFoo:\n"
2519                      "  case ns::kBar:\n"
2520                      "  case kBaz:\n"
2521                      "    break;\n"
2522                      "  default:\n"
2523                      "    g();\n"
2524                      "    break;\n"
2525                      "}");
2526   verifyGoogleFormat("switch (x) {\n"
2527                      "  case 1: {\n"
2528                      "    f();\n"
2529                      "    break;\n"
2530                      "  }\n"
2531                      "}");
2532   verifyGoogleFormat("switch (test)\n"
2533                      "  ;");
2534 
2535   verifyGoogleFormat("#define OPERATION_CASE(name) \\\n"
2536                      "  case OP_name:              \\\n"
2537                      "    return operations::Operation##name\n");
2538   verifyGoogleFormat("Operation codeToOperation(OperationCode OpCode) {\n"
2539                      "  // Get the correction operation class.\n"
2540                      "  switch (OpCode) {\n"
2541                      "    CASE(Add);\n"
2542                      "    CASE(Subtract);\n"
2543                      "    default:\n"
2544                      "      return operations::Unknown;\n"
2545                      "  }\n"
2546                      "#undef OPERATION_CASE\n"
2547                      "}");
2548   verifyFormat("DEBUG({\n"
2549                "  switch (x) {\n"
2550                "  case A:\n"
2551                "    f();\n"
2552                "    break;\n"
2553                "    // fallthrough\n"
2554                "  case B:\n"
2555                "    g();\n"
2556                "    break;\n"
2557                "  }\n"
2558                "});");
2559   EXPECT_EQ("DEBUG({\n"
2560             "  switch (x) {\n"
2561             "  case A:\n"
2562             "    f();\n"
2563             "    break;\n"
2564             "  // On B:\n"
2565             "  case B:\n"
2566             "    g();\n"
2567             "    break;\n"
2568             "  }\n"
2569             "});",
2570             format("DEBUG({\n"
2571                    "  switch (x) {\n"
2572                    "  case A:\n"
2573                    "    f();\n"
2574                    "    break;\n"
2575                    "  // On B:\n"
2576                    "  case B:\n"
2577                    "    g();\n"
2578                    "    break;\n"
2579                    "  }\n"
2580                    "});",
2581                    getLLVMStyle()));
2582   EXPECT_EQ("switch (n) {\n"
2583             "case 0: {\n"
2584             "  return false;\n"
2585             "}\n"
2586             "default: {\n"
2587             "  return true;\n"
2588             "}\n"
2589             "}",
2590             format("switch (n)\n"
2591                    "{\n"
2592                    "case 0: {\n"
2593                    "  return false;\n"
2594                    "}\n"
2595                    "default: {\n"
2596                    "  return true;\n"
2597                    "}\n"
2598                    "}",
2599                    getLLVMStyle()));
2600   verifyFormat("switch (a) {\n"
2601                "case (b):\n"
2602                "  return;\n"
2603                "}");
2604 
2605   verifyFormat("switch (a) {\n"
2606                "case some_namespace::\n"
2607                "    some_constant:\n"
2608                "  return;\n"
2609                "}",
2610                getLLVMStyleWithColumns(34));
2611 
2612   verifyFormat("switch (a) {\n"
2613                "[[likely]] case 1:\n"
2614                "  return;\n"
2615                "}");
2616   verifyFormat("switch (a) {\n"
2617                "[[likely]] [[other::likely]] case 1:\n"
2618                "  return;\n"
2619                "}");
2620   verifyFormat("switch (x) {\n"
2621                "case 1:\n"
2622                "  return;\n"
2623                "[[likely]] case 2:\n"
2624                "  return;\n"
2625                "}");
2626   verifyFormat("switch (a) {\n"
2627                "case 1:\n"
2628                "[[likely]] case 2:\n"
2629                "  return;\n"
2630                "}");
2631   FormatStyle Attributes = getLLVMStyle();
2632   Attributes.AttributeMacros.push_back("LIKELY");
2633   Attributes.AttributeMacros.push_back("OTHER_LIKELY");
2634   verifyFormat("switch (a) {\n"
2635                "LIKELY case b:\n"
2636                "  return;\n"
2637                "}",
2638                Attributes);
2639   verifyFormat("switch (a) {\n"
2640                "LIKELY OTHER_LIKELY() case b:\n"
2641                "  return;\n"
2642                "}",
2643                Attributes);
2644   verifyFormat("switch (a) {\n"
2645                "case 1:\n"
2646                "  return;\n"
2647                "LIKELY case 2:\n"
2648                "  return;\n"
2649                "}",
2650                Attributes);
2651   verifyFormat("switch (a) {\n"
2652                "case 1:\n"
2653                "LIKELY case 2:\n"
2654                "  return;\n"
2655                "}",
2656                Attributes);
2657 
2658   FormatStyle Style = getLLVMStyle();
2659   Style.IndentCaseLabels = true;
2660   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Never;
2661   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2662   Style.BraceWrapping.AfterCaseLabel = true;
2663   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Always;
2664   EXPECT_EQ("switch (n)\n"
2665             "{\n"
2666             "  case 0:\n"
2667             "  {\n"
2668             "    return false;\n"
2669             "  }\n"
2670             "  default:\n"
2671             "  {\n"
2672             "    return true;\n"
2673             "  }\n"
2674             "}",
2675             format("switch (n) {\n"
2676                    "  case 0: {\n"
2677                    "    return false;\n"
2678                    "  }\n"
2679                    "  default: {\n"
2680                    "    return true;\n"
2681                    "  }\n"
2682                    "}",
2683                    Style));
2684   Style.BraceWrapping.AfterCaseLabel = false;
2685   EXPECT_EQ("switch (n)\n"
2686             "{\n"
2687             "  case 0: {\n"
2688             "    return false;\n"
2689             "  }\n"
2690             "  default: {\n"
2691             "    return true;\n"
2692             "  }\n"
2693             "}",
2694             format("switch (n) {\n"
2695                    "  case 0:\n"
2696                    "  {\n"
2697                    "    return false;\n"
2698                    "  }\n"
2699                    "  default:\n"
2700                    "  {\n"
2701                    "    return true;\n"
2702                    "  }\n"
2703                    "}",
2704                    Style));
2705   Style.IndentCaseLabels = false;
2706   Style.IndentCaseBlocks = true;
2707   EXPECT_EQ("switch (n)\n"
2708             "{\n"
2709             "case 0:\n"
2710             "  {\n"
2711             "    return false;\n"
2712             "  }\n"
2713             "case 1:\n"
2714             "  break;\n"
2715             "default:\n"
2716             "  {\n"
2717             "    return true;\n"
2718             "  }\n"
2719             "}",
2720             format("switch (n) {\n"
2721                    "case 0: {\n"
2722                    "  return false;\n"
2723                    "}\n"
2724                    "case 1:\n"
2725                    "  break;\n"
2726                    "default: {\n"
2727                    "  return true;\n"
2728                    "}\n"
2729                    "}",
2730                    Style));
2731   Style.IndentCaseLabels = true;
2732   Style.IndentCaseBlocks = true;
2733   EXPECT_EQ("switch (n)\n"
2734             "{\n"
2735             "  case 0:\n"
2736             "    {\n"
2737             "      return false;\n"
2738             "    }\n"
2739             "  case 1:\n"
2740             "    break;\n"
2741             "  default:\n"
2742             "    {\n"
2743             "      return true;\n"
2744             "    }\n"
2745             "}",
2746             format("switch (n) {\n"
2747                    "case 0: {\n"
2748                    "  return false;\n"
2749                    "}\n"
2750                    "case 1:\n"
2751                    "  break;\n"
2752                    "default: {\n"
2753                    "  return true;\n"
2754                    "}\n"
2755                    "}",
2756                    Style));
2757 }
2758 
2759 TEST_F(FormatTest, CaseRanges) {
2760   verifyFormat("switch (x) {\n"
2761                "case 'A' ... 'Z':\n"
2762                "case 1 ... 5:\n"
2763                "case a ... b:\n"
2764                "  break;\n"
2765                "}");
2766 }
2767 
2768 TEST_F(FormatTest, ShortEnums) {
2769   FormatStyle Style = getLLVMStyle();
2770   EXPECT_TRUE(Style.AllowShortEnumsOnASingleLine);
2771   EXPECT_FALSE(Style.BraceWrapping.AfterEnum);
2772   verifyFormat("enum { A, B, C } ShortEnum1, ShortEnum2;", Style);
2773   verifyFormat("typedef enum { A, B, C } ShortEnum1, ShortEnum2;", Style);
2774   Style.AllowShortEnumsOnASingleLine = false;
2775   verifyFormat("enum {\n"
2776                "  A,\n"
2777                "  B,\n"
2778                "  C\n"
2779                "} ShortEnum1, ShortEnum2;",
2780                Style);
2781   verifyFormat("typedef enum {\n"
2782                "  A,\n"
2783                "  B,\n"
2784                "  C\n"
2785                "} ShortEnum1, ShortEnum2;",
2786                Style);
2787   verifyFormat("enum {\n"
2788                "  A,\n"
2789                "} ShortEnum1, ShortEnum2;",
2790                Style);
2791   verifyFormat("typedef enum {\n"
2792                "  A,\n"
2793                "} ShortEnum1, ShortEnum2;",
2794                Style);
2795   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2796   Style.BraceWrapping.AfterEnum = true;
2797   verifyFormat("enum\n"
2798                "{\n"
2799                "  A,\n"
2800                "  B,\n"
2801                "  C\n"
2802                "} ShortEnum1, ShortEnum2;",
2803                Style);
2804   verifyFormat("typedef enum\n"
2805                "{\n"
2806                "  A,\n"
2807                "  B,\n"
2808                "  C\n"
2809                "} ShortEnum1, ShortEnum2;",
2810                Style);
2811 }
2812 
2813 TEST_F(FormatTest, ShortCaseLabels) {
2814   FormatStyle Style = getLLVMStyle();
2815   Style.AllowShortCaseLabelsOnASingleLine = true;
2816   verifyFormat("switch (a) {\n"
2817                "case 1: x = 1; break;\n"
2818                "case 2: return;\n"
2819                "case 3:\n"
2820                "case 4:\n"
2821                "case 5: return;\n"
2822                "case 6: // comment\n"
2823                "  return;\n"
2824                "case 7:\n"
2825                "  // comment\n"
2826                "  return;\n"
2827                "case 8:\n"
2828                "  x = 8; // comment\n"
2829                "  break;\n"
2830                "default: y = 1; break;\n"
2831                "}",
2832                Style);
2833   verifyFormat("switch (a) {\n"
2834                "case 0: return; // comment\n"
2835                "case 1: break;  // comment\n"
2836                "case 2: return;\n"
2837                "// comment\n"
2838                "case 3: return;\n"
2839                "// comment 1\n"
2840                "// comment 2\n"
2841                "// comment 3\n"
2842                "case 4: break; /* comment */\n"
2843                "case 5:\n"
2844                "  // comment\n"
2845                "  break;\n"
2846                "case 6: /* comment */ x = 1; break;\n"
2847                "case 7: x = /* comment */ 1; break;\n"
2848                "case 8:\n"
2849                "  x = 1; /* comment */\n"
2850                "  break;\n"
2851                "case 9:\n"
2852                "  break; // comment line 1\n"
2853                "         // comment line 2\n"
2854                "}",
2855                Style);
2856   EXPECT_EQ("switch (a) {\n"
2857             "case 1:\n"
2858             "  x = 8;\n"
2859             "  // fall through\n"
2860             "case 2: x = 8;\n"
2861             "// comment\n"
2862             "case 3:\n"
2863             "  return; /* comment line 1\n"
2864             "           * comment line 2 */\n"
2865             "case 4: i = 8;\n"
2866             "// something else\n"
2867             "#if FOO\n"
2868             "case 5: break;\n"
2869             "#endif\n"
2870             "}",
2871             format("switch (a) {\n"
2872                    "case 1: x = 8;\n"
2873                    "  // fall through\n"
2874                    "case 2:\n"
2875                    "  x = 8;\n"
2876                    "// comment\n"
2877                    "case 3:\n"
2878                    "  return; /* comment line 1\n"
2879                    "           * comment line 2 */\n"
2880                    "case 4:\n"
2881                    "  i = 8;\n"
2882                    "// something else\n"
2883                    "#if FOO\n"
2884                    "case 5: break;\n"
2885                    "#endif\n"
2886                    "}",
2887                    Style));
2888   EXPECT_EQ("switch (a) {\n"
2889             "case 0:\n"
2890             "  return; // long long long long long long long long long long "
2891             "long long comment\n"
2892             "          // line\n"
2893             "}",
2894             format("switch (a) {\n"
2895                    "case 0: return; // long long long long long long long long "
2896                    "long long long long comment line\n"
2897                    "}",
2898                    Style));
2899   EXPECT_EQ("switch (a) {\n"
2900             "case 0:\n"
2901             "  return; /* long long long long long long long long long long "
2902             "long long comment\n"
2903             "             line */\n"
2904             "}",
2905             format("switch (a) {\n"
2906                    "case 0: return; /* long long long long long long long long "
2907                    "long long long long comment line */\n"
2908                    "}",
2909                    Style));
2910   verifyFormat("switch (a) {\n"
2911                "#if FOO\n"
2912                "case 0: return 0;\n"
2913                "#endif\n"
2914                "}",
2915                Style);
2916   verifyFormat("switch (a) {\n"
2917                "case 1: {\n"
2918                "}\n"
2919                "case 2: {\n"
2920                "  return;\n"
2921                "}\n"
2922                "case 3: {\n"
2923                "  x = 1;\n"
2924                "  return;\n"
2925                "}\n"
2926                "case 4:\n"
2927                "  if (x)\n"
2928                "    return;\n"
2929                "}",
2930                Style);
2931   Style.ColumnLimit = 21;
2932   verifyFormat("switch (a) {\n"
2933                "case 1: x = 1; break;\n"
2934                "case 2: return;\n"
2935                "case 3:\n"
2936                "case 4:\n"
2937                "case 5: return;\n"
2938                "default:\n"
2939                "  y = 1;\n"
2940                "  break;\n"
2941                "}",
2942                Style);
2943   Style.ColumnLimit = 80;
2944   Style.AllowShortCaseLabelsOnASingleLine = false;
2945   Style.IndentCaseLabels = true;
2946   EXPECT_EQ("switch (n) {\n"
2947             "  default /*comments*/:\n"
2948             "    return true;\n"
2949             "  case 0:\n"
2950             "    return false;\n"
2951             "}",
2952             format("switch (n) {\n"
2953                    "default/*comments*/:\n"
2954                    "  return true;\n"
2955                    "case 0:\n"
2956                    "  return false;\n"
2957                    "}",
2958                    Style));
2959   Style.AllowShortCaseLabelsOnASingleLine = true;
2960   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2961   Style.BraceWrapping.AfterCaseLabel = true;
2962   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Always;
2963   EXPECT_EQ("switch (n)\n"
2964             "{\n"
2965             "  case 0:\n"
2966             "  {\n"
2967             "    return false;\n"
2968             "  }\n"
2969             "  default:\n"
2970             "  {\n"
2971             "    return true;\n"
2972             "  }\n"
2973             "}",
2974             format("switch (n) {\n"
2975                    "  case 0: {\n"
2976                    "    return false;\n"
2977                    "  }\n"
2978                    "  default:\n"
2979                    "  {\n"
2980                    "    return true;\n"
2981                    "  }\n"
2982                    "}",
2983                    Style));
2984 }
2985 
2986 TEST_F(FormatTest, FormatsLabels) {
2987   verifyFormat("void f() {\n"
2988                "  some_code();\n"
2989                "test_label:\n"
2990                "  some_other_code();\n"
2991                "  {\n"
2992                "    some_more_code();\n"
2993                "  another_label:\n"
2994                "    some_more_code();\n"
2995                "  }\n"
2996                "}");
2997   verifyFormat("{\n"
2998                "  some_code();\n"
2999                "test_label:\n"
3000                "  some_other_code();\n"
3001                "}");
3002   verifyFormat("{\n"
3003                "  some_code();\n"
3004                "test_label:;\n"
3005                "  int i = 0;\n"
3006                "}");
3007   FormatStyle Style = getLLVMStyle();
3008   Style.IndentGotoLabels = false;
3009   verifyFormat("void f() {\n"
3010                "  some_code();\n"
3011                "test_label:\n"
3012                "  some_other_code();\n"
3013                "  {\n"
3014                "    some_more_code();\n"
3015                "another_label:\n"
3016                "    some_more_code();\n"
3017                "  }\n"
3018                "}",
3019                Style);
3020   verifyFormat("{\n"
3021                "  some_code();\n"
3022                "test_label:\n"
3023                "  some_other_code();\n"
3024                "}",
3025                Style);
3026   verifyFormat("{\n"
3027                "  some_code();\n"
3028                "test_label:;\n"
3029                "  int i = 0;\n"
3030                "}");
3031 }
3032 
3033 TEST_F(FormatTest, MultiLineControlStatements) {
3034   FormatStyle Style = getLLVMStyleWithColumns(20);
3035   Style.BreakBeforeBraces = FormatStyle::BraceBreakingStyle::BS_Custom;
3036   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_MultiLine;
3037   // Short lines should keep opening brace on same line.
3038   EXPECT_EQ("if (foo) {\n"
3039             "  bar();\n"
3040             "}",
3041             format("if(foo){bar();}", Style));
3042   EXPECT_EQ("if (foo) {\n"
3043             "  bar();\n"
3044             "} else {\n"
3045             "  baz();\n"
3046             "}",
3047             format("if(foo){bar();}else{baz();}", Style));
3048   EXPECT_EQ("if (foo && bar) {\n"
3049             "  baz();\n"
3050             "}",
3051             format("if(foo&&bar){baz();}", Style));
3052   EXPECT_EQ("if (foo) {\n"
3053             "  bar();\n"
3054             "} else if (baz) {\n"
3055             "  quux();\n"
3056             "}",
3057             format("if(foo){bar();}else if(baz){quux();}", Style));
3058   EXPECT_EQ(
3059       "if (foo) {\n"
3060       "  bar();\n"
3061       "} else if (baz) {\n"
3062       "  quux();\n"
3063       "} else {\n"
3064       "  foobar();\n"
3065       "}",
3066       format("if(foo){bar();}else if(baz){quux();}else{foobar();}", Style));
3067   EXPECT_EQ("for (;;) {\n"
3068             "  foo();\n"
3069             "}",
3070             format("for(;;){foo();}"));
3071   EXPECT_EQ("while (1) {\n"
3072             "  foo();\n"
3073             "}",
3074             format("while(1){foo();}", Style));
3075   EXPECT_EQ("switch (foo) {\n"
3076             "case bar:\n"
3077             "  return;\n"
3078             "}",
3079             format("switch(foo){case bar:return;}", Style));
3080   EXPECT_EQ("try {\n"
3081             "  foo();\n"
3082             "} catch (...) {\n"
3083             "  bar();\n"
3084             "}",
3085             format("try{foo();}catch(...){bar();}", Style));
3086   EXPECT_EQ("do {\n"
3087             "  foo();\n"
3088             "} while (bar &&\n"
3089             "         baz);",
3090             format("do{foo();}while(bar&&baz);", Style));
3091   // Long lines should put opening brace on new line.
3092   EXPECT_EQ("if (foo && bar &&\n"
3093             "    baz)\n"
3094             "{\n"
3095             "  quux();\n"
3096             "}",
3097             format("if(foo&&bar&&baz){quux();}", Style));
3098   EXPECT_EQ("if (foo && bar &&\n"
3099             "    baz)\n"
3100             "{\n"
3101             "  quux();\n"
3102             "}",
3103             format("if (foo && bar &&\n"
3104                    "    baz) {\n"
3105                    "  quux();\n"
3106                    "}",
3107                    Style));
3108   EXPECT_EQ("if (foo) {\n"
3109             "  bar();\n"
3110             "} else if (baz ||\n"
3111             "           quux)\n"
3112             "{\n"
3113             "  foobar();\n"
3114             "}",
3115             format("if(foo){bar();}else if(baz||quux){foobar();}", Style));
3116   EXPECT_EQ(
3117       "if (foo) {\n"
3118       "  bar();\n"
3119       "} else if (baz ||\n"
3120       "           quux)\n"
3121       "{\n"
3122       "  foobar();\n"
3123       "} else {\n"
3124       "  barbaz();\n"
3125       "}",
3126       format("if(foo){bar();}else if(baz||quux){foobar();}else{barbaz();}",
3127              Style));
3128   EXPECT_EQ("for (int i = 0;\n"
3129             "     i < 10; ++i)\n"
3130             "{\n"
3131             "  foo();\n"
3132             "}",
3133             format("for(int i=0;i<10;++i){foo();}", Style));
3134   EXPECT_EQ("foreach (int i,\n"
3135             "         list)\n"
3136             "{\n"
3137             "  foo();\n"
3138             "}",
3139             format("foreach(int i, list){foo();}", Style));
3140   Style.ColumnLimit =
3141       40; // to concentrate at brace wrapping, not line wrap due to column limit
3142   EXPECT_EQ("foreach (int i, list) {\n"
3143             "  foo();\n"
3144             "}",
3145             format("foreach(int i, list){foo();}", Style));
3146   Style.ColumnLimit =
3147       20; // to concentrate at brace wrapping, not line wrap due to column limit
3148   EXPECT_EQ("while (foo || bar ||\n"
3149             "       baz)\n"
3150             "{\n"
3151             "  quux();\n"
3152             "}",
3153             format("while(foo||bar||baz){quux();}", Style));
3154   EXPECT_EQ("switch (\n"
3155             "    foo = barbaz)\n"
3156             "{\n"
3157             "case quux:\n"
3158             "  return;\n"
3159             "}",
3160             format("switch(foo=barbaz){case quux:return;}", Style));
3161   EXPECT_EQ("try {\n"
3162             "  foo();\n"
3163             "} catch (\n"
3164             "    Exception &bar)\n"
3165             "{\n"
3166             "  baz();\n"
3167             "}",
3168             format("try{foo();}catch(Exception&bar){baz();}", Style));
3169   Style.ColumnLimit =
3170       40; // to concentrate at brace wrapping, not line wrap due to column limit
3171   EXPECT_EQ("try {\n"
3172             "  foo();\n"
3173             "} catch (Exception &bar) {\n"
3174             "  baz();\n"
3175             "}",
3176             format("try{foo();}catch(Exception&bar){baz();}", Style));
3177   Style.ColumnLimit =
3178       20; // to concentrate at brace wrapping, not line wrap due to column limit
3179 
3180   Style.BraceWrapping.BeforeElse = true;
3181   EXPECT_EQ(
3182       "if (foo) {\n"
3183       "  bar();\n"
3184       "}\n"
3185       "else if (baz ||\n"
3186       "         quux)\n"
3187       "{\n"
3188       "  foobar();\n"
3189       "}\n"
3190       "else {\n"
3191       "  barbaz();\n"
3192       "}",
3193       format("if(foo){bar();}else if(baz||quux){foobar();}else{barbaz();}",
3194              Style));
3195 
3196   Style.BraceWrapping.BeforeCatch = true;
3197   EXPECT_EQ("try {\n"
3198             "  foo();\n"
3199             "}\n"
3200             "catch (...) {\n"
3201             "  baz();\n"
3202             "}",
3203             format("try{foo();}catch(...){baz();}", Style));
3204 
3205   Style.BraceWrapping.AfterFunction = true;
3206   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_MultiLine;
3207   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
3208   Style.ColumnLimit = 80;
3209   verifyFormat("void shortfunction() { bar(); }", Style);
3210 
3211   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
3212   verifyFormat("void shortfunction()\n"
3213                "{\n"
3214                "  bar();\n"
3215                "}",
3216                Style);
3217 }
3218 
3219 TEST_F(FormatTest, BeforeWhile) {
3220   FormatStyle Style = getLLVMStyle();
3221   Style.BreakBeforeBraces = FormatStyle::BraceBreakingStyle::BS_Custom;
3222 
3223   verifyFormat("do {\n"
3224                "  foo();\n"
3225                "} while (1);",
3226                Style);
3227   Style.BraceWrapping.BeforeWhile = true;
3228   verifyFormat("do {\n"
3229                "  foo();\n"
3230                "}\n"
3231                "while (1);",
3232                Style);
3233 }
3234 
3235 //===----------------------------------------------------------------------===//
3236 // Tests for classes, namespaces, etc.
3237 //===----------------------------------------------------------------------===//
3238 
3239 TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) {
3240   verifyFormat("class A {};");
3241 }
3242 
3243 TEST_F(FormatTest, UnderstandsAccessSpecifiers) {
3244   verifyFormat("class A {\n"
3245                "public:\n"
3246                "public: // comment\n"
3247                "protected:\n"
3248                "private:\n"
3249                "  void f() {}\n"
3250                "};");
3251   verifyFormat("export class A {\n"
3252                "public:\n"
3253                "public: // comment\n"
3254                "protected:\n"
3255                "private:\n"
3256                "  void f() {}\n"
3257                "};");
3258   verifyGoogleFormat("class A {\n"
3259                      " public:\n"
3260                      " protected:\n"
3261                      " private:\n"
3262                      "  void f() {}\n"
3263                      "};");
3264   verifyGoogleFormat("export class A {\n"
3265                      " public:\n"
3266                      " protected:\n"
3267                      " private:\n"
3268                      "  void f() {}\n"
3269                      "};");
3270   verifyFormat("class A {\n"
3271                "public slots:\n"
3272                "  void f1() {}\n"
3273                "public Q_SLOTS:\n"
3274                "  void f2() {}\n"
3275                "protected slots:\n"
3276                "  void f3() {}\n"
3277                "protected Q_SLOTS:\n"
3278                "  void f4() {}\n"
3279                "private slots:\n"
3280                "  void f5() {}\n"
3281                "private Q_SLOTS:\n"
3282                "  void f6() {}\n"
3283                "signals:\n"
3284                "  void g1();\n"
3285                "Q_SIGNALS:\n"
3286                "  void g2();\n"
3287                "};");
3288 
3289   // Don't interpret 'signals' the wrong way.
3290   verifyFormat("signals.set();");
3291   verifyFormat("for (Signals signals : f()) {\n}");
3292   verifyFormat("{\n"
3293                "  signals.set(); // This needs indentation.\n"
3294                "}");
3295   verifyFormat("void f() {\n"
3296                "label:\n"
3297                "  signals.baz();\n"
3298                "}");
3299   verifyFormat("private[1];");
3300   verifyFormat("testArray[public] = 1;");
3301   verifyFormat("public();");
3302   verifyFormat("myFunc(public);");
3303   verifyFormat("std::vector<int> testVec = {private};");
3304   verifyFormat("private.p = 1;");
3305   verifyFormat("void function(private...){};");
3306   verifyFormat("if (private && public)\n");
3307   verifyFormat("private &= true;");
3308   verifyFormat("int x = private * public;");
3309   verifyFormat("public *= private;");
3310   verifyFormat("int x = public + private;");
3311   verifyFormat("private++;");
3312   verifyFormat("++private;");
3313   verifyFormat("public += private;");
3314   verifyFormat("public = public - private;");
3315   verifyFormat("public->foo();");
3316   verifyFormat("private--;");
3317   verifyFormat("--private;");
3318   verifyFormat("public -= 1;");
3319   verifyFormat("if (!private && !public)\n");
3320   verifyFormat("public != private;");
3321   verifyFormat("int x = public / private;");
3322   verifyFormat("public /= 2;");
3323   verifyFormat("public = public % 2;");
3324   verifyFormat("public %= 2;");
3325   verifyFormat("if (public < private)\n");
3326   verifyFormat("public << private;");
3327   verifyFormat("public <<= private;");
3328   verifyFormat("if (public > private)\n");
3329   verifyFormat("public >> private;");
3330   verifyFormat("public >>= private;");
3331   verifyFormat("public ^ private;");
3332   verifyFormat("public ^= private;");
3333   verifyFormat("public | private;");
3334   verifyFormat("public |= private;");
3335   verifyFormat("auto x = private ? 1 : 2;");
3336   verifyFormat("if (public == private)\n");
3337   verifyFormat("void foo(public, private)");
3338   verifyFormat("public::foo();");
3339 }
3340 
3341 TEST_F(FormatTest, SeparatesLogicalBlocks) {
3342   EXPECT_EQ("class A {\n"
3343             "public:\n"
3344             "  void f();\n"
3345             "\n"
3346             "private:\n"
3347             "  void g() {}\n"
3348             "  // test\n"
3349             "protected:\n"
3350             "  int h;\n"
3351             "};",
3352             format("class A {\n"
3353                    "public:\n"
3354                    "void f();\n"
3355                    "private:\n"
3356                    "void g() {}\n"
3357                    "// test\n"
3358                    "protected:\n"
3359                    "int h;\n"
3360                    "};"));
3361   EXPECT_EQ("class A {\n"
3362             "protected:\n"
3363             "public:\n"
3364             "  void f();\n"
3365             "};",
3366             format("class A {\n"
3367                    "protected:\n"
3368                    "\n"
3369                    "public:\n"
3370                    "\n"
3371                    "  void f();\n"
3372                    "};"));
3373 
3374   // Even ensure proper spacing inside macros.
3375   EXPECT_EQ("#define B     \\\n"
3376             "  class A {   \\\n"
3377             "   protected: \\\n"
3378             "   public:    \\\n"
3379             "    void f(); \\\n"
3380             "  };",
3381             format("#define B     \\\n"
3382                    "  class A {   \\\n"
3383                    "   protected: \\\n"
3384                    "              \\\n"
3385                    "   public:    \\\n"
3386                    "              \\\n"
3387                    "    void f(); \\\n"
3388                    "  };",
3389                    getGoogleStyle()));
3390   // But don't remove empty lines after macros ending in access specifiers.
3391   EXPECT_EQ("#define A private:\n"
3392             "\n"
3393             "int i;",
3394             format("#define A         private:\n"
3395                    "\n"
3396                    "int              i;"));
3397 }
3398 
3399 TEST_F(FormatTest, FormatsClasses) {
3400   verifyFormat("class A : public B {};");
3401   verifyFormat("class A : public ::B {};");
3402 
3403   verifyFormat(
3404       "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
3405       "                             public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
3406   verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n"
3407                "    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
3408                "      public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
3409   verifyFormat(
3410       "class A : public B, public C, public D, public E, public F {};");
3411   verifyFormat("class AAAAAAAAAAAA : public B,\n"
3412                "                     public C,\n"
3413                "                     public D,\n"
3414                "                     public E,\n"
3415                "                     public F,\n"
3416                "                     public G {};");
3417 
3418   verifyFormat("class\n"
3419                "    ReallyReallyLongClassName {\n"
3420                "  int i;\n"
3421                "};",
3422                getLLVMStyleWithColumns(32));
3423   verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n"
3424                "                           aaaaaaaaaaaaaaaa> {};");
3425   verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n"
3426                "    : public aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaa,\n"
3427                "                                 aaaaaaaaaaaaaaaaaaaaaa> {};");
3428   verifyFormat("template <class R, class C>\n"
3429                "struct Aaaaaaaaaaaaaaaaa<R (C::*)(int) const>\n"
3430                "    : Aaaaaaaaaaaaaaaaa<R (C::*)(int)> {};");
3431   verifyFormat("class ::A::B {};");
3432 }
3433 
3434 TEST_F(FormatTest, BreakInheritanceStyle) {
3435   FormatStyle StyleWithInheritanceBreakBeforeComma = getLLVMStyle();
3436   StyleWithInheritanceBreakBeforeComma.BreakInheritanceList =
3437       FormatStyle::BILS_BeforeComma;
3438   verifyFormat("class MyClass : public X {};",
3439                StyleWithInheritanceBreakBeforeComma);
3440   verifyFormat("class MyClass\n"
3441                "    : public X\n"
3442                "    , public Y {};",
3443                StyleWithInheritanceBreakBeforeComma);
3444   verifyFormat("class AAAAAAAAAAAAAAAAAAAAAA\n"
3445                "    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB\n"
3446                "    , public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};",
3447                StyleWithInheritanceBreakBeforeComma);
3448   verifyFormat("struct aaaaaaaaaaaaa\n"
3449                "    : public aaaaaaaaaaaaaaaaaaa< // break\n"
3450                "          aaaaaaaaaaaaaaaa> {};",
3451                StyleWithInheritanceBreakBeforeComma);
3452 
3453   FormatStyle StyleWithInheritanceBreakAfterColon = getLLVMStyle();
3454   StyleWithInheritanceBreakAfterColon.BreakInheritanceList =
3455       FormatStyle::BILS_AfterColon;
3456   verifyFormat("class MyClass : public X {};",
3457                StyleWithInheritanceBreakAfterColon);
3458   verifyFormat("class MyClass : public X, public Y {};",
3459                StyleWithInheritanceBreakAfterColon);
3460   verifyFormat("class AAAAAAAAAAAAAAAAAAAAAA :\n"
3461                "    public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
3462                "    public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};",
3463                StyleWithInheritanceBreakAfterColon);
3464   verifyFormat("struct aaaaaaaaaaaaa :\n"
3465                "    public aaaaaaaaaaaaaaaaaaa< // break\n"
3466                "        aaaaaaaaaaaaaaaa> {};",
3467                StyleWithInheritanceBreakAfterColon);
3468 
3469   FormatStyle StyleWithInheritanceBreakAfterComma = getLLVMStyle();
3470   StyleWithInheritanceBreakAfterComma.BreakInheritanceList =
3471       FormatStyle::BILS_AfterComma;
3472   verifyFormat("class MyClass : public X {};",
3473                StyleWithInheritanceBreakAfterComma);
3474   verifyFormat("class MyClass : public X,\n"
3475                "                public Y {};",
3476                StyleWithInheritanceBreakAfterComma);
3477   verifyFormat(
3478       "class AAAAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
3479       "                               public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC "
3480       "{};",
3481       StyleWithInheritanceBreakAfterComma);
3482   verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n"
3483                "                           aaaaaaaaaaaaaaaa> {};",
3484                StyleWithInheritanceBreakAfterComma);
3485   verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n"
3486                "    : public OnceBreak,\n"
3487                "      public AlwaysBreak,\n"
3488                "      EvenBasesFitInOneLine {};",
3489                StyleWithInheritanceBreakAfterComma);
3490 }
3491 
3492 TEST_F(FormatTest, FormatsVariableDeclarationsAfterRecord) {
3493   verifyFormat("class A {\n} a, b;");
3494   verifyFormat("struct A {\n} a, b;");
3495   verifyFormat("union A {\n} a, b;");
3496 
3497   verifyFormat("constexpr class A {\n} a, b;");
3498   verifyFormat("constexpr struct A {\n} a, b;");
3499   verifyFormat("constexpr union A {\n} a, b;");
3500 
3501   verifyFormat("namespace {\nclass A {\n} a, b;\n} // namespace");
3502   verifyFormat("namespace {\nstruct A {\n} a, b;\n} // namespace");
3503   verifyFormat("namespace {\nunion A {\n} a, b;\n} // namespace");
3504 
3505   verifyFormat("namespace {\nconstexpr class A {\n} a, b;\n} // namespace");
3506   verifyFormat("namespace {\nconstexpr struct A {\n} a, b;\n} // namespace");
3507   verifyFormat("namespace {\nconstexpr union A {\n} a, b;\n} // namespace");
3508 
3509   verifyFormat("namespace ns {\n"
3510                "class {\n"
3511                "} a, b;\n"
3512                "} // namespace ns");
3513   verifyFormat("namespace ns {\n"
3514                "const class {\n"
3515                "} a, b;\n"
3516                "} // namespace ns");
3517   verifyFormat("namespace ns {\n"
3518                "constexpr class C {\n"
3519                "} a, b;\n"
3520                "} // namespace ns");
3521   verifyFormat("namespace ns {\n"
3522                "class { /* comment */\n"
3523                "} a, b;\n"
3524                "} // namespace ns");
3525   verifyFormat("namespace ns {\n"
3526                "const class { /* comment */\n"
3527                "} a, b;\n"
3528                "} // namespace ns");
3529 }
3530 
3531 TEST_F(FormatTest, FormatsEnum) {
3532   verifyFormat("enum {\n"
3533                "  Zero,\n"
3534                "  One = 1,\n"
3535                "  Two = One + 1,\n"
3536                "  Three = (One + Two),\n"
3537                "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
3538                "  Five = (One, Two, Three, Four, 5)\n"
3539                "};");
3540   verifyGoogleFormat("enum {\n"
3541                      "  Zero,\n"
3542                      "  One = 1,\n"
3543                      "  Two = One + 1,\n"
3544                      "  Three = (One + Two),\n"
3545                      "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
3546                      "  Five = (One, Two, Three, Four, 5)\n"
3547                      "};");
3548   verifyFormat("enum Enum {};");
3549   verifyFormat("enum {};");
3550   verifyFormat("enum X E {} d;");
3551   verifyFormat("enum __attribute__((...)) E {} d;");
3552   verifyFormat("enum __declspec__((...)) E {} d;");
3553   verifyFormat("enum {\n"
3554                "  Bar = Foo<int, int>::value\n"
3555                "};",
3556                getLLVMStyleWithColumns(30));
3557 
3558   verifyFormat("enum ShortEnum { A, B, C };");
3559   verifyGoogleFormat("enum ShortEnum { A, B, C };");
3560 
3561   EXPECT_EQ("enum KeepEmptyLines {\n"
3562             "  ONE,\n"
3563             "\n"
3564             "  TWO,\n"
3565             "\n"
3566             "  THREE\n"
3567             "}",
3568             format("enum KeepEmptyLines {\n"
3569                    "  ONE,\n"
3570                    "\n"
3571                    "  TWO,\n"
3572                    "\n"
3573                    "\n"
3574                    "  THREE\n"
3575                    "}"));
3576   verifyFormat("enum E { // comment\n"
3577                "  ONE,\n"
3578                "  TWO\n"
3579                "};\n"
3580                "int i;");
3581 
3582   FormatStyle EightIndent = getLLVMStyle();
3583   EightIndent.IndentWidth = 8;
3584   verifyFormat("enum {\n"
3585                "        VOID,\n"
3586                "        CHAR,\n"
3587                "        SHORT,\n"
3588                "        INT,\n"
3589                "        LONG,\n"
3590                "        SIGNED,\n"
3591                "        UNSIGNED,\n"
3592                "        BOOL,\n"
3593                "        FLOAT,\n"
3594                "        DOUBLE,\n"
3595                "        COMPLEX\n"
3596                "};",
3597                EightIndent);
3598 
3599   // Not enums.
3600   verifyFormat("enum X f() {\n"
3601                "  a();\n"
3602                "  return 42;\n"
3603                "}");
3604   verifyFormat("enum X Type::f() {\n"
3605                "  a();\n"
3606                "  return 42;\n"
3607                "}");
3608   verifyFormat("enum ::X f() {\n"
3609                "  a();\n"
3610                "  return 42;\n"
3611                "}");
3612   verifyFormat("enum ns::X f() {\n"
3613                "  a();\n"
3614                "  return 42;\n"
3615                "}");
3616 }
3617 
3618 TEST_F(FormatTest, FormatsEnumsWithErrors) {
3619   verifyFormat("enum Type {\n"
3620                "  One = 0; // These semicolons should be commas.\n"
3621                "  Two = 1;\n"
3622                "};");
3623   verifyFormat("namespace n {\n"
3624                "enum Type {\n"
3625                "  One,\n"
3626                "  Two, // missing };\n"
3627                "  int i;\n"
3628                "}\n"
3629                "void g() {}");
3630 }
3631 
3632 TEST_F(FormatTest, FormatsEnumStruct) {
3633   verifyFormat("enum struct {\n"
3634                "  Zero,\n"
3635                "  One = 1,\n"
3636                "  Two = One + 1,\n"
3637                "  Three = (One + Two),\n"
3638                "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
3639                "  Five = (One, Two, Three, Four, 5)\n"
3640                "};");
3641   verifyFormat("enum struct Enum {};");
3642   verifyFormat("enum struct {};");
3643   verifyFormat("enum struct X E {} d;");
3644   verifyFormat("enum struct __attribute__((...)) E {} d;");
3645   verifyFormat("enum struct __declspec__((...)) E {} d;");
3646   verifyFormat("enum struct X f() {\n  a();\n  return 42;\n}");
3647 }
3648 
3649 TEST_F(FormatTest, FormatsEnumClass) {
3650   verifyFormat("enum class {\n"
3651                "  Zero,\n"
3652                "  One = 1,\n"
3653                "  Two = One + 1,\n"
3654                "  Three = (One + Two),\n"
3655                "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
3656                "  Five = (One, Two, Three, Four, 5)\n"
3657                "};");
3658   verifyFormat("enum class Enum {};");
3659   verifyFormat("enum class {};");
3660   verifyFormat("enum class X E {} d;");
3661   verifyFormat("enum class __attribute__((...)) E {} d;");
3662   verifyFormat("enum class __declspec__((...)) E {} d;");
3663   verifyFormat("enum class X f() {\n  a();\n  return 42;\n}");
3664 }
3665 
3666 TEST_F(FormatTest, FormatsEnumTypes) {
3667   verifyFormat("enum X : int {\n"
3668                "  A, // Force multiple lines.\n"
3669                "  B\n"
3670                "};");
3671   verifyFormat("enum X : int { A, B };");
3672   verifyFormat("enum X : std::uint32_t { A, B };");
3673 }
3674 
3675 TEST_F(FormatTest, FormatsTypedefEnum) {
3676   FormatStyle Style = getLLVMStyleWithColumns(40);
3677   verifyFormat("typedef enum {} EmptyEnum;");
3678   verifyFormat("typedef enum { A, B, C } ShortEnum;");
3679   verifyFormat("typedef enum {\n"
3680                "  ZERO = 0,\n"
3681                "  ONE = 1,\n"
3682                "  TWO = 2,\n"
3683                "  THREE = 3\n"
3684                "} LongEnum;",
3685                Style);
3686   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
3687   Style.BraceWrapping.AfterEnum = true;
3688   verifyFormat("typedef enum {} EmptyEnum;");
3689   verifyFormat("typedef enum { A, B, C } ShortEnum;");
3690   verifyFormat("typedef enum\n"
3691                "{\n"
3692                "  ZERO = 0,\n"
3693                "  ONE = 1,\n"
3694                "  TWO = 2,\n"
3695                "  THREE = 3\n"
3696                "} LongEnum;",
3697                Style);
3698 }
3699 
3700 TEST_F(FormatTest, FormatsNSEnums) {
3701   verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }");
3702   verifyGoogleFormat(
3703       "typedef NS_CLOSED_ENUM(NSInteger, SomeName) { AAA, BBB }");
3704   verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n"
3705                      "  // Information about someDecentlyLongValue.\n"
3706                      "  someDecentlyLongValue,\n"
3707                      "  // Information about anotherDecentlyLongValue.\n"
3708                      "  anotherDecentlyLongValue,\n"
3709                      "  // Information about aThirdDecentlyLongValue.\n"
3710                      "  aThirdDecentlyLongValue\n"
3711                      "};");
3712   verifyGoogleFormat("typedef NS_CLOSED_ENUM(NSInteger, MyType) {\n"
3713                      "  // Information about someDecentlyLongValue.\n"
3714                      "  someDecentlyLongValue,\n"
3715                      "  // Information about anotherDecentlyLongValue.\n"
3716                      "  anotherDecentlyLongValue,\n"
3717                      "  // Information about aThirdDecentlyLongValue.\n"
3718                      "  aThirdDecentlyLongValue\n"
3719                      "};");
3720   verifyGoogleFormat("typedef NS_OPTIONS(NSInteger, MyType) {\n"
3721                      "  a = 1,\n"
3722                      "  b = 2,\n"
3723                      "  c = 3,\n"
3724                      "};");
3725   verifyGoogleFormat("typedef CF_ENUM(NSInteger, MyType) {\n"
3726                      "  a = 1,\n"
3727                      "  b = 2,\n"
3728                      "  c = 3,\n"
3729                      "};");
3730   verifyGoogleFormat("typedef CF_CLOSED_ENUM(NSInteger, MyType) {\n"
3731                      "  a = 1,\n"
3732                      "  b = 2,\n"
3733                      "  c = 3,\n"
3734                      "};");
3735   verifyGoogleFormat("typedef CF_OPTIONS(NSInteger, MyType) {\n"
3736                      "  a = 1,\n"
3737                      "  b = 2,\n"
3738                      "  c = 3,\n"
3739                      "};");
3740 }
3741 
3742 TEST_F(FormatTest, FormatsBitfields) {
3743   verifyFormat("struct Bitfields {\n"
3744                "  unsigned sClass : 8;\n"
3745                "  unsigned ValueKind : 2;\n"
3746                "};");
3747   verifyFormat("struct A {\n"
3748                "  int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n"
3749                "      bbbbbbbbbbbbbbbbbbbbbbbbb;\n"
3750                "};");
3751   verifyFormat("struct MyStruct {\n"
3752                "  uchar data;\n"
3753                "  uchar : 8;\n"
3754                "  uchar : 8;\n"
3755                "  uchar other;\n"
3756                "};");
3757   FormatStyle Style = getLLVMStyle();
3758   Style.BitFieldColonSpacing = FormatStyle::BFCS_None;
3759   verifyFormat("struct Bitfields {\n"
3760                "  unsigned sClass:8;\n"
3761                "  unsigned ValueKind:2;\n"
3762                "  uchar other;\n"
3763                "};",
3764                Style);
3765   verifyFormat("struct A {\n"
3766                "  int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:1,\n"
3767                "      bbbbbbbbbbbbbbbbbbbbbbbbb:2;\n"
3768                "};",
3769                Style);
3770   Style.BitFieldColonSpacing = FormatStyle::BFCS_Before;
3771   verifyFormat("struct Bitfields {\n"
3772                "  unsigned sClass :8;\n"
3773                "  unsigned ValueKind :2;\n"
3774                "  uchar other;\n"
3775                "};",
3776                Style);
3777   Style.BitFieldColonSpacing = FormatStyle::BFCS_After;
3778   verifyFormat("struct Bitfields {\n"
3779                "  unsigned sClass: 8;\n"
3780                "  unsigned ValueKind: 2;\n"
3781                "  uchar other;\n"
3782                "};",
3783                Style);
3784 }
3785 
3786 TEST_F(FormatTest, FormatsNamespaces) {
3787   FormatStyle LLVMWithNoNamespaceFix = getLLVMStyle();
3788   LLVMWithNoNamespaceFix.FixNamespaceComments = false;
3789 
3790   verifyFormat("namespace some_namespace {\n"
3791                "class A {};\n"
3792                "void f() { f(); }\n"
3793                "}",
3794                LLVMWithNoNamespaceFix);
3795   verifyFormat("#define M(x) x##x\n"
3796                "namespace M(x) {\n"
3797                "class A {};\n"
3798                "void f() { f(); }\n"
3799                "}",
3800                LLVMWithNoNamespaceFix);
3801   verifyFormat("#define M(x) x##x\n"
3802                "namespace N::inline M(x) {\n"
3803                "class A {};\n"
3804                "void f() { f(); }\n"
3805                "}",
3806                LLVMWithNoNamespaceFix);
3807   verifyFormat("#define M(x) x##x\n"
3808                "namespace M(x)::inline N {\n"
3809                "class A {};\n"
3810                "void f() { f(); }\n"
3811                "}",
3812                LLVMWithNoNamespaceFix);
3813   verifyFormat("#define M(x) x##x\n"
3814                "namespace N::M(x) {\n"
3815                "class A {};\n"
3816                "void f() { f(); }\n"
3817                "}",
3818                LLVMWithNoNamespaceFix);
3819   verifyFormat("#define M(x) x##x\n"
3820                "namespace M::N(x) {\n"
3821                "class A {};\n"
3822                "void f() { f(); }\n"
3823                "}",
3824                LLVMWithNoNamespaceFix);
3825   verifyFormat("namespace N::inline D {\n"
3826                "class A {};\n"
3827                "void f() { f(); }\n"
3828                "}",
3829                LLVMWithNoNamespaceFix);
3830   verifyFormat("namespace N::inline D::E {\n"
3831                "class A {};\n"
3832                "void f() { f(); }\n"
3833                "}",
3834                LLVMWithNoNamespaceFix);
3835   verifyFormat("namespace [[deprecated(\"foo[bar\")]] some_namespace {\n"
3836                "class A {};\n"
3837                "void f() { f(); }\n"
3838                "}",
3839                LLVMWithNoNamespaceFix);
3840   verifyFormat("/* something */ namespace some_namespace {\n"
3841                "class A {};\n"
3842                "void f() { f(); }\n"
3843                "}",
3844                LLVMWithNoNamespaceFix);
3845   verifyFormat("namespace {\n"
3846                "class A {};\n"
3847                "void f() { f(); }\n"
3848                "}",
3849                LLVMWithNoNamespaceFix);
3850   verifyFormat("/* something */ namespace {\n"
3851                "class A {};\n"
3852                "void f() { f(); }\n"
3853                "}",
3854                LLVMWithNoNamespaceFix);
3855   verifyFormat("inline namespace X {\n"
3856                "class A {};\n"
3857                "void f() { f(); }\n"
3858                "}",
3859                LLVMWithNoNamespaceFix);
3860   verifyFormat("/* something */ inline namespace X {\n"
3861                "class A {};\n"
3862                "void f() { f(); }\n"
3863                "}",
3864                LLVMWithNoNamespaceFix);
3865   verifyFormat("export namespace X {\n"
3866                "class A {};\n"
3867                "void f() { f(); }\n"
3868                "}",
3869                LLVMWithNoNamespaceFix);
3870   verifyFormat("using namespace some_namespace;\n"
3871                "class A {};\n"
3872                "void f() { f(); }",
3873                LLVMWithNoNamespaceFix);
3874 
3875   // This code is more common than we thought; if we
3876   // layout this correctly the semicolon will go into
3877   // its own line, which is undesirable.
3878   verifyFormat("namespace {};", LLVMWithNoNamespaceFix);
3879   verifyFormat("namespace {\n"
3880                "class A {};\n"
3881                "};",
3882                LLVMWithNoNamespaceFix);
3883 
3884   verifyFormat("namespace {\n"
3885                "int SomeVariable = 0; // comment\n"
3886                "} // namespace",
3887                LLVMWithNoNamespaceFix);
3888   EXPECT_EQ("#ifndef HEADER_GUARD\n"
3889             "#define HEADER_GUARD\n"
3890             "namespace my_namespace {\n"
3891             "int i;\n"
3892             "} // my_namespace\n"
3893             "#endif // HEADER_GUARD",
3894             format("#ifndef HEADER_GUARD\n"
3895                    " #define HEADER_GUARD\n"
3896                    "   namespace my_namespace {\n"
3897                    "int i;\n"
3898                    "}    // my_namespace\n"
3899                    "#endif    // HEADER_GUARD",
3900                    LLVMWithNoNamespaceFix));
3901 
3902   EXPECT_EQ("namespace A::B {\n"
3903             "class C {};\n"
3904             "}",
3905             format("namespace A::B {\n"
3906                    "class C {};\n"
3907                    "}",
3908                    LLVMWithNoNamespaceFix));
3909 
3910   FormatStyle Style = getLLVMStyle();
3911   Style.NamespaceIndentation = FormatStyle::NI_All;
3912   EXPECT_EQ("namespace out {\n"
3913             "  int i;\n"
3914             "  namespace in {\n"
3915             "    int i;\n"
3916             "  } // namespace in\n"
3917             "} // namespace out",
3918             format("namespace out {\n"
3919                    "int i;\n"
3920                    "namespace in {\n"
3921                    "int i;\n"
3922                    "} // namespace in\n"
3923                    "} // namespace out",
3924                    Style));
3925 
3926   FormatStyle ShortInlineFunctions = getLLVMStyle();
3927   ShortInlineFunctions.NamespaceIndentation = FormatStyle::NI_All;
3928   ShortInlineFunctions.AllowShortFunctionsOnASingleLine =
3929       FormatStyle::SFS_Inline;
3930   verifyFormat("namespace {\n"
3931                "  void f() {\n"
3932                "    return;\n"
3933                "  }\n"
3934                "} // namespace\n",
3935                ShortInlineFunctions);
3936   verifyFormat("namespace { /* comment */\n"
3937                "  void f() {\n"
3938                "    return;\n"
3939                "  }\n"
3940                "} // namespace\n",
3941                ShortInlineFunctions);
3942   verifyFormat("namespace { // comment\n"
3943                "  void f() {\n"
3944                "    return;\n"
3945                "  }\n"
3946                "} // namespace\n",
3947                ShortInlineFunctions);
3948   verifyFormat("namespace {\n"
3949                "  int some_int;\n"
3950                "  void f() {\n"
3951                "    return;\n"
3952                "  }\n"
3953                "} // namespace\n",
3954                ShortInlineFunctions);
3955   verifyFormat("namespace interface {\n"
3956                "  void f() {\n"
3957                "    return;\n"
3958                "  }\n"
3959                "} // namespace interface\n",
3960                ShortInlineFunctions);
3961   verifyFormat("namespace {\n"
3962                "  class X {\n"
3963                "    void f() { return; }\n"
3964                "  };\n"
3965                "} // namespace\n",
3966                ShortInlineFunctions);
3967   verifyFormat("namespace {\n"
3968                "  class X { /* comment */\n"
3969                "    void f() { return; }\n"
3970                "  };\n"
3971                "} // namespace\n",
3972                ShortInlineFunctions);
3973   verifyFormat("namespace {\n"
3974                "  class X { // comment\n"
3975                "    void f() { return; }\n"
3976                "  };\n"
3977                "} // namespace\n",
3978                ShortInlineFunctions);
3979   verifyFormat("namespace {\n"
3980                "  struct X {\n"
3981                "    void f() { return; }\n"
3982                "  };\n"
3983                "} // namespace\n",
3984                ShortInlineFunctions);
3985   verifyFormat("namespace {\n"
3986                "  union X {\n"
3987                "    void f() { return; }\n"
3988                "  };\n"
3989                "} // namespace\n",
3990                ShortInlineFunctions);
3991   verifyFormat("extern \"C\" {\n"
3992                "void f() {\n"
3993                "  return;\n"
3994                "}\n"
3995                "} // namespace\n",
3996                ShortInlineFunctions);
3997   verifyFormat("namespace {\n"
3998                "  class X {\n"
3999                "    void f() { return; }\n"
4000                "  } x;\n"
4001                "} // namespace\n",
4002                ShortInlineFunctions);
4003   verifyFormat("namespace {\n"
4004                "  [[nodiscard]] class X {\n"
4005                "    void f() { return; }\n"
4006                "  };\n"
4007                "} // namespace\n",
4008                ShortInlineFunctions);
4009   verifyFormat("namespace {\n"
4010                "  static class X {\n"
4011                "    void f() { return; }\n"
4012                "  } x;\n"
4013                "} // namespace\n",
4014                ShortInlineFunctions);
4015   verifyFormat("namespace {\n"
4016                "  constexpr class X {\n"
4017                "    void f() { return; }\n"
4018                "  } x;\n"
4019                "} // namespace\n",
4020                ShortInlineFunctions);
4021 
4022   ShortInlineFunctions.IndentExternBlock = FormatStyle::IEBS_Indent;
4023   verifyFormat("extern \"C\" {\n"
4024                "  void f() {\n"
4025                "    return;\n"
4026                "  }\n"
4027                "} // namespace\n",
4028                ShortInlineFunctions);
4029 
4030   Style.NamespaceIndentation = FormatStyle::NI_Inner;
4031   EXPECT_EQ("namespace out {\n"
4032             "int i;\n"
4033             "namespace in {\n"
4034             "  int i;\n"
4035             "} // namespace in\n"
4036             "} // namespace out",
4037             format("namespace out {\n"
4038                    "int i;\n"
4039                    "namespace in {\n"
4040                    "int i;\n"
4041                    "} // namespace in\n"
4042                    "} // namespace out",
4043                    Style));
4044 
4045   Style.NamespaceIndentation = FormatStyle::NI_None;
4046   verifyFormat("template <class T>\n"
4047                "concept a_concept = X<>;\n"
4048                "namespace B {\n"
4049                "struct b_struct {};\n"
4050                "} // namespace B\n",
4051                Style);
4052   verifyFormat("template <int I>\n"
4053                "constexpr void foo()\n"
4054                "  requires(I == 42)\n"
4055                "{}\n"
4056                "namespace ns {\n"
4057                "void foo() {}\n"
4058                "} // namespace ns\n",
4059                Style);
4060 }
4061 
4062 TEST_F(FormatTest, NamespaceMacros) {
4063   FormatStyle Style = getLLVMStyle();
4064   Style.NamespaceMacros.push_back("TESTSUITE");
4065 
4066   verifyFormat("TESTSUITE(A) {\n"
4067                "int foo();\n"
4068                "} // TESTSUITE(A)",
4069                Style);
4070 
4071   verifyFormat("TESTSUITE(A, B) {\n"
4072                "int foo();\n"
4073                "} // TESTSUITE(A)",
4074                Style);
4075 
4076   // Properly indent according to NamespaceIndentation style
4077   Style.NamespaceIndentation = FormatStyle::NI_All;
4078   verifyFormat("TESTSUITE(A) {\n"
4079                "  int foo();\n"
4080                "} // TESTSUITE(A)",
4081                Style);
4082   verifyFormat("TESTSUITE(A) {\n"
4083                "  namespace B {\n"
4084                "    int foo();\n"
4085                "  } // namespace B\n"
4086                "} // TESTSUITE(A)",
4087                Style);
4088   verifyFormat("namespace A {\n"
4089                "  TESTSUITE(B) {\n"
4090                "    int foo();\n"
4091                "  } // TESTSUITE(B)\n"
4092                "} // namespace A",
4093                Style);
4094 
4095   Style.NamespaceIndentation = FormatStyle::NI_Inner;
4096   verifyFormat("TESTSUITE(A) {\n"
4097                "TESTSUITE(B) {\n"
4098                "  int foo();\n"
4099                "} // TESTSUITE(B)\n"
4100                "} // TESTSUITE(A)",
4101                Style);
4102   verifyFormat("TESTSUITE(A) {\n"
4103                "namespace B {\n"
4104                "  int foo();\n"
4105                "} // namespace B\n"
4106                "} // TESTSUITE(A)",
4107                Style);
4108   verifyFormat("namespace A {\n"
4109                "TESTSUITE(B) {\n"
4110                "  int foo();\n"
4111                "} // TESTSUITE(B)\n"
4112                "} // namespace A",
4113                Style);
4114 
4115   // Properly merge namespace-macros blocks in CompactNamespaces mode
4116   Style.NamespaceIndentation = FormatStyle::NI_None;
4117   Style.CompactNamespaces = true;
4118   verifyFormat("TESTSUITE(A) { TESTSUITE(B) {\n"
4119                "}} // TESTSUITE(A::B)",
4120                Style);
4121 
4122   EXPECT_EQ("TESTSUITE(out) { TESTSUITE(in) {\n"
4123             "}} // TESTSUITE(out::in)",
4124             format("TESTSUITE(out) {\n"
4125                    "TESTSUITE(in) {\n"
4126                    "} // TESTSUITE(in)\n"
4127                    "} // TESTSUITE(out)",
4128                    Style));
4129 
4130   EXPECT_EQ("TESTSUITE(out) { TESTSUITE(in) {\n"
4131             "}} // TESTSUITE(out::in)",
4132             format("TESTSUITE(out) {\n"
4133                    "TESTSUITE(in) {\n"
4134                    "} // TESTSUITE(in)\n"
4135                    "} // TESTSUITE(out)",
4136                    Style));
4137 
4138   // Do not merge different namespaces/macros
4139   EXPECT_EQ("namespace out {\n"
4140             "TESTSUITE(in) {\n"
4141             "} // TESTSUITE(in)\n"
4142             "} // namespace out",
4143             format("namespace out {\n"
4144                    "TESTSUITE(in) {\n"
4145                    "} // TESTSUITE(in)\n"
4146                    "} // namespace out",
4147                    Style));
4148   EXPECT_EQ("TESTSUITE(out) {\n"
4149             "namespace in {\n"
4150             "} // namespace in\n"
4151             "} // TESTSUITE(out)",
4152             format("TESTSUITE(out) {\n"
4153                    "namespace in {\n"
4154                    "} // namespace in\n"
4155                    "} // TESTSUITE(out)",
4156                    Style));
4157   Style.NamespaceMacros.push_back("FOOBAR");
4158   EXPECT_EQ("TESTSUITE(out) {\n"
4159             "FOOBAR(in) {\n"
4160             "} // FOOBAR(in)\n"
4161             "} // TESTSUITE(out)",
4162             format("TESTSUITE(out) {\n"
4163                    "FOOBAR(in) {\n"
4164                    "} // FOOBAR(in)\n"
4165                    "} // TESTSUITE(out)",
4166                    Style));
4167 }
4168 
4169 TEST_F(FormatTest, FormatsCompactNamespaces) {
4170   FormatStyle Style = getLLVMStyle();
4171   Style.CompactNamespaces = true;
4172   Style.NamespaceMacros.push_back("TESTSUITE");
4173 
4174   verifyFormat("namespace A { namespace B {\n"
4175                "}} // namespace A::B",
4176                Style);
4177 
4178   EXPECT_EQ("namespace out { namespace in {\n"
4179             "}} // namespace out::in",
4180             format("namespace out {\n"
4181                    "namespace in {\n"
4182                    "} // namespace in\n"
4183                    "} // namespace out",
4184                    Style));
4185 
4186   // Only namespaces which have both consecutive opening and end get compacted
4187   EXPECT_EQ("namespace out {\n"
4188             "namespace in1 {\n"
4189             "} // namespace in1\n"
4190             "namespace in2 {\n"
4191             "} // namespace in2\n"
4192             "} // namespace out",
4193             format("namespace out {\n"
4194                    "namespace in1 {\n"
4195                    "} // namespace in1\n"
4196                    "namespace in2 {\n"
4197                    "} // namespace in2\n"
4198                    "} // namespace out",
4199                    Style));
4200 
4201   EXPECT_EQ("namespace out {\n"
4202             "int i;\n"
4203             "namespace in {\n"
4204             "int j;\n"
4205             "} // namespace in\n"
4206             "int k;\n"
4207             "} // namespace out",
4208             format("namespace out { int i;\n"
4209                    "namespace in { int j; } // namespace in\n"
4210                    "int k; } // namespace out",
4211                    Style));
4212 
4213   EXPECT_EQ("namespace A { namespace B { namespace C {\n"
4214             "}}} // namespace A::B::C\n",
4215             format("namespace A { namespace B {\n"
4216                    "namespace C {\n"
4217                    "}} // namespace B::C\n"
4218                    "} // namespace A\n",
4219                    Style));
4220 
4221   Style.ColumnLimit = 40;
4222   EXPECT_EQ("namespace aaaaaaaaaa {\n"
4223             "namespace bbbbbbbbbb {\n"
4224             "}} // namespace aaaaaaaaaa::bbbbbbbbbb",
4225             format("namespace aaaaaaaaaa {\n"
4226                    "namespace bbbbbbbbbb {\n"
4227                    "} // namespace bbbbbbbbbb\n"
4228                    "} // namespace aaaaaaaaaa",
4229                    Style));
4230 
4231   EXPECT_EQ("namespace aaaaaa { namespace bbbbbb {\n"
4232             "namespace cccccc {\n"
4233             "}}} // namespace aaaaaa::bbbbbb::cccccc",
4234             format("namespace aaaaaa {\n"
4235                    "namespace bbbbbb {\n"
4236                    "namespace cccccc {\n"
4237                    "} // namespace cccccc\n"
4238                    "} // namespace bbbbbb\n"
4239                    "} // namespace aaaaaa",
4240                    Style));
4241   Style.ColumnLimit = 80;
4242 
4243   // Extra semicolon after 'inner' closing brace prevents merging
4244   EXPECT_EQ("namespace out { namespace in {\n"
4245             "}; } // namespace out::in",
4246             format("namespace out {\n"
4247                    "namespace in {\n"
4248                    "}; // namespace in\n"
4249                    "} // namespace out",
4250                    Style));
4251 
4252   // Extra semicolon after 'outer' closing brace is conserved
4253   EXPECT_EQ("namespace out { namespace in {\n"
4254             "}}; // namespace out::in",
4255             format("namespace out {\n"
4256                    "namespace in {\n"
4257                    "} // namespace in\n"
4258                    "}; // namespace out",
4259                    Style));
4260 
4261   Style.NamespaceIndentation = FormatStyle::NI_All;
4262   EXPECT_EQ("namespace out { namespace in {\n"
4263             "  int i;\n"
4264             "}} // namespace out::in",
4265             format("namespace out {\n"
4266                    "namespace in {\n"
4267                    "int i;\n"
4268                    "} // namespace in\n"
4269                    "} // namespace out",
4270                    Style));
4271   EXPECT_EQ("namespace out { namespace mid {\n"
4272             "  namespace in {\n"
4273             "    int j;\n"
4274             "  } // namespace in\n"
4275             "  int k;\n"
4276             "}} // namespace out::mid",
4277             format("namespace out { namespace mid {\n"
4278                    "namespace in { int j; } // namespace in\n"
4279                    "int k; }} // namespace out::mid",
4280                    Style));
4281 
4282   Style.NamespaceIndentation = FormatStyle::NI_Inner;
4283   EXPECT_EQ("namespace out { namespace in {\n"
4284             "  int i;\n"
4285             "}} // namespace out::in",
4286             format("namespace out {\n"
4287                    "namespace in {\n"
4288                    "int i;\n"
4289                    "} // namespace in\n"
4290                    "} // namespace out",
4291                    Style));
4292   EXPECT_EQ("namespace out { namespace mid { namespace in {\n"
4293             "  int i;\n"
4294             "}}} // namespace out::mid::in",
4295             format("namespace out {\n"
4296                    "namespace mid {\n"
4297                    "namespace in {\n"
4298                    "int i;\n"
4299                    "} // namespace in\n"
4300                    "} // namespace mid\n"
4301                    "} // namespace out",
4302                    Style));
4303 
4304   Style.CompactNamespaces = true;
4305   Style.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
4306   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
4307   Style.BraceWrapping.BeforeLambdaBody = true;
4308   verifyFormat("namespace out { namespace in {\n"
4309                "}} // namespace out::in",
4310                Style);
4311   EXPECT_EQ("namespace out { namespace in {\n"
4312             "}} // namespace out::in",
4313             format("namespace out {\n"
4314                    "namespace in {\n"
4315                    "} // namespace in\n"
4316                    "} // namespace out",
4317                    Style));
4318 }
4319 
4320 TEST_F(FormatTest, FormatsExternC) {
4321   verifyFormat("extern \"C\" {\nint a;");
4322   verifyFormat("extern \"C\" {}");
4323   verifyFormat("extern \"C\" {\n"
4324                "int foo();\n"
4325                "}");
4326   verifyFormat("extern \"C\" int foo() {}");
4327   verifyFormat("extern \"C\" int foo();");
4328   verifyFormat("extern \"C\" int foo() {\n"
4329                "  int i = 42;\n"
4330                "  return i;\n"
4331                "}");
4332 
4333   FormatStyle Style = getLLVMStyle();
4334   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
4335   Style.BraceWrapping.AfterFunction = true;
4336   verifyFormat("extern \"C\" int foo() {}", Style);
4337   verifyFormat("extern \"C\" int foo();", Style);
4338   verifyFormat("extern \"C\" int foo()\n"
4339                "{\n"
4340                "  int i = 42;\n"
4341                "  return i;\n"
4342                "}",
4343                Style);
4344 
4345   Style.BraceWrapping.AfterExternBlock = true;
4346   Style.BraceWrapping.SplitEmptyRecord = false;
4347   verifyFormat("extern \"C\"\n"
4348                "{}",
4349                Style);
4350   verifyFormat("extern \"C\"\n"
4351                "{\n"
4352                "  int foo();\n"
4353                "}",
4354                Style);
4355 }
4356 
4357 TEST_F(FormatTest, IndentExternBlockStyle) {
4358   FormatStyle Style = getLLVMStyle();
4359   Style.IndentWidth = 2;
4360 
4361   Style.IndentExternBlock = FormatStyle::IEBS_Indent;
4362   verifyFormat("extern \"C\" { /*9*/\n"
4363                "}",
4364                Style);
4365   verifyFormat("extern \"C\" {\n"
4366                "  int foo10();\n"
4367                "}",
4368                Style);
4369 
4370   Style.IndentExternBlock = FormatStyle::IEBS_NoIndent;
4371   verifyFormat("extern \"C\" { /*11*/\n"
4372                "}",
4373                Style);
4374   verifyFormat("extern \"C\" {\n"
4375                "int foo12();\n"
4376                "}",
4377                Style);
4378 
4379   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
4380   Style.BraceWrapping.AfterExternBlock = true;
4381   Style.IndentExternBlock = FormatStyle::IEBS_Indent;
4382   verifyFormat("extern \"C\"\n"
4383                "{ /*13*/\n"
4384                "}",
4385                Style);
4386   verifyFormat("extern \"C\"\n{\n"
4387                "  int foo14();\n"
4388                "}",
4389                Style);
4390 
4391   Style.BraceWrapping.AfterExternBlock = false;
4392   Style.IndentExternBlock = FormatStyle::IEBS_NoIndent;
4393   verifyFormat("extern \"C\" { /*15*/\n"
4394                "}",
4395                Style);
4396   verifyFormat("extern \"C\" {\n"
4397                "int foo16();\n"
4398                "}",
4399                Style);
4400 
4401   Style.BraceWrapping.AfterExternBlock = true;
4402   verifyFormat("extern \"C\"\n"
4403                "{ /*13*/\n"
4404                "}",
4405                Style);
4406   verifyFormat("extern \"C\"\n"
4407                "{\n"
4408                "int foo14();\n"
4409                "}",
4410                Style);
4411 
4412   Style.IndentExternBlock = FormatStyle::IEBS_Indent;
4413   verifyFormat("extern \"C\"\n"
4414                "{ /*13*/\n"
4415                "}",
4416                Style);
4417   verifyFormat("extern \"C\"\n"
4418                "{\n"
4419                "  int foo14();\n"
4420                "}",
4421                Style);
4422 }
4423 
4424 TEST_F(FormatTest, FormatsInlineASM) {
4425   verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));");
4426   verifyFormat("asm(\"nop\" ::: \"memory\");");
4427   verifyFormat(
4428       "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n"
4429       "    \"cpuid\\n\\t\"\n"
4430       "    \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n"
4431       "    : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n"
4432       "    : \"a\"(value));");
4433   EXPECT_EQ(
4434       "void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n"
4435       "  __asm {\n"
4436       "        mov     edx,[that] // vtable in edx\n"
4437       "        mov     eax,methodIndex\n"
4438       "        call    [edx][eax*4] // stdcall\n"
4439       "  }\n"
4440       "}",
4441       format("void NS_InvokeByIndex(void *that,   unsigned int methodIndex) {\n"
4442              "    __asm {\n"
4443              "        mov     edx,[that] // vtable in edx\n"
4444              "        mov     eax,methodIndex\n"
4445              "        call    [edx][eax*4] // stdcall\n"
4446              "    }\n"
4447              "}"));
4448   EXPECT_EQ("_asm {\n"
4449             "  xor eax, eax;\n"
4450             "  cpuid;\n"
4451             "}",
4452             format("_asm {\n"
4453                    "  xor eax, eax;\n"
4454                    "  cpuid;\n"
4455                    "}"));
4456   verifyFormat("void function() {\n"
4457                "  // comment\n"
4458                "  asm(\"\");\n"
4459                "}");
4460   EXPECT_EQ("__asm {\n"
4461             "}\n"
4462             "int i;",
4463             format("__asm   {\n"
4464                    "}\n"
4465                    "int   i;"));
4466 }
4467 
4468 TEST_F(FormatTest, FormatTryCatch) {
4469   verifyFormat("try {\n"
4470                "  throw a * b;\n"
4471                "} catch (int a) {\n"
4472                "  // Do nothing.\n"
4473                "} catch (...) {\n"
4474                "  exit(42);\n"
4475                "}");
4476 
4477   // Function-level try statements.
4478   verifyFormat("int f() try { return 4; } catch (...) {\n"
4479                "  return 5;\n"
4480                "}");
4481   verifyFormat("class A {\n"
4482                "  int a;\n"
4483                "  A() try : a(0) {\n"
4484                "  } catch (...) {\n"
4485                "    throw;\n"
4486                "  }\n"
4487                "};\n");
4488   verifyFormat("class A {\n"
4489                "  int a;\n"
4490                "  A() try : a(0), b{1} {\n"
4491                "  } catch (...) {\n"
4492                "    throw;\n"
4493                "  }\n"
4494                "};\n");
4495   verifyFormat("class A {\n"
4496                "  int a;\n"
4497                "  A() try : a(0), b{1}, c{2} {\n"
4498                "  } catch (...) {\n"
4499                "    throw;\n"
4500                "  }\n"
4501                "};\n");
4502   verifyFormat("class A {\n"
4503                "  int a;\n"
4504                "  A() try : a(0), b{1}, c{2} {\n"
4505                "    { // New scope.\n"
4506                "    }\n"
4507                "  } catch (...) {\n"
4508                "    throw;\n"
4509                "  }\n"
4510                "};\n");
4511 
4512   // Incomplete try-catch blocks.
4513   verifyIncompleteFormat("try {} catch (");
4514 }
4515 
4516 TEST_F(FormatTest, FormatTryAsAVariable) {
4517   verifyFormat("int try;");
4518   verifyFormat("int try, size;");
4519   verifyFormat("try = foo();");
4520   verifyFormat("if (try < size) {\n  return true;\n}");
4521 
4522   verifyFormat("int catch;");
4523   verifyFormat("int catch, size;");
4524   verifyFormat("catch = foo();");
4525   verifyFormat("if (catch < size) {\n  return true;\n}");
4526 
4527   FormatStyle Style = getLLVMStyle();
4528   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
4529   Style.BraceWrapping.AfterFunction = true;
4530   Style.BraceWrapping.BeforeCatch = true;
4531   verifyFormat("try {\n"
4532                "  int bar = 1;\n"
4533                "}\n"
4534                "catch (...) {\n"
4535                "  int bar = 1;\n"
4536                "}",
4537                Style);
4538   verifyFormat("#if NO_EX\n"
4539                "try\n"
4540                "#endif\n"
4541                "{\n"
4542                "}\n"
4543                "#if NO_EX\n"
4544                "catch (...) {\n"
4545                "}",
4546                Style);
4547   verifyFormat("try /* abc */ {\n"
4548                "  int bar = 1;\n"
4549                "}\n"
4550                "catch (...) {\n"
4551                "  int bar = 1;\n"
4552                "}",
4553                Style);
4554   verifyFormat("try\n"
4555                "// abc\n"
4556                "{\n"
4557                "  int bar = 1;\n"
4558                "}\n"
4559                "catch (...) {\n"
4560                "  int bar = 1;\n"
4561                "}",
4562                Style);
4563 }
4564 
4565 TEST_F(FormatTest, FormatSEHTryCatch) {
4566   verifyFormat("__try {\n"
4567                "  int a = b * c;\n"
4568                "} __except (EXCEPTION_EXECUTE_HANDLER) {\n"
4569                "  // Do nothing.\n"
4570                "}");
4571 
4572   verifyFormat("__try {\n"
4573                "  int a = b * c;\n"
4574                "} __finally {\n"
4575                "  // Do nothing.\n"
4576                "}");
4577 
4578   verifyFormat("DEBUG({\n"
4579                "  __try {\n"
4580                "  } __finally {\n"
4581                "  }\n"
4582                "});\n");
4583 }
4584 
4585 TEST_F(FormatTest, IncompleteTryCatchBlocks) {
4586   verifyFormat("try {\n"
4587                "  f();\n"
4588                "} catch {\n"
4589                "  g();\n"
4590                "}");
4591   verifyFormat("try {\n"
4592                "  f();\n"
4593                "} catch (A a) MACRO(x) {\n"
4594                "  g();\n"
4595                "} catch (B b) MACRO(x) {\n"
4596                "  g();\n"
4597                "}");
4598 }
4599 
4600 TEST_F(FormatTest, FormatTryCatchBraceStyles) {
4601   FormatStyle Style = getLLVMStyle();
4602   for (auto BraceStyle : {FormatStyle::BS_Attach, FormatStyle::BS_Mozilla,
4603                           FormatStyle::BS_WebKit}) {
4604     Style.BreakBeforeBraces = BraceStyle;
4605     verifyFormat("try {\n"
4606                  "  // something\n"
4607                  "} catch (...) {\n"
4608                  "  // something\n"
4609                  "}",
4610                  Style);
4611   }
4612   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
4613   verifyFormat("try {\n"
4614                "  // something\n"
4615                "}\n"
4616                "catch (...) {\n"
4617                "  // something\n"
4618                "}",
4619                Style);
4620   verifyFormat("__try {\n"
4621                "  // something\n"
4622                "}\n"
4623                "__finally {\n"
4624                "  // something\n"
4625                "}",
4626                Style);
4627   verifyFormat("@try {\n"
4628                "  // something\n"
4629                "}\n"
4630                "@finally {\n"
4631                "  // something\n"
4632                "}",
4633                Style);
4634   Style.BreakBeforeBraces = FormatStyle::BS_Allman;
4635   verifyFormat("try\n"
4636                "{\n"
4637                "  // something\n"
4638                "}\n"
4639                "catch (...)\n"
4640                "{\n"
4641                "  // something\n"
4642                "}",
4643                Style);
4644   Style.BreakBeforeBraces = FormatStyle::BS_Whitesmiths;
4645   verifyFormat("try\n"
4646                "  {\n"
4647                "  // something white\n"
4648                "  }\n"
4649                "catch (...)\n"
4650                "  {\n"
4651                "  // something white\n"
4652                "  }",
4653                Style);
4654   Style.BreakBeforeBraces = FormatStyle::BS_GNU;
4655   verifyFormat("try\n"
4656                "  {\n"
4657                "    // something\n"
4658                "  }\n"
4659                "catch (...)\n"
4660                "  {\n"
4661                "    // something\n"
4662                "  }",
4663                Style);
4664   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
4665   Style.BraceWrapping.BeforeCatch = true;
4666   verifyFormat("try {\n"
4667                "  // something\n"
4668                "}\n"
4669                "catch (...) {\n"
4670                "  // something\n"
4671                "}",
4672                Style);
4673 }
4674 
4675 TEST_F(FormatTest, StaticInitializers) {
4676   verifyFormat("static SomeClass SC = {1, 'a'};");
4677 
4678   verifyFormat("static SomeClass WithALoooooooooooooooooooongName = {\n"
4679                "    100000000, "
4680                "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};");
4681 
4682   // Here, everything other than the "}" would fit on a line.
4683   verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n"
4684                "    10000000000000000000000000};");
4685   EXPECT_EQ("S s = {a,\n"
4686             "\n"
4687             "       b};",
4688             format("S s = {\n"
4689                    "  a,\n"
4690                    "\n"
4691                    "  b\n"
4692                    "};"));
4693 
4694   // FIXME: This would fit into the column limit if we'd fit "{ {" on the first
4695   // line. However, the formatting looks a bit off and this probably doesn't
4696   // happen often in practice.
4697   verifyFormat("static int Variable[1] = {\n"
4698                "    {1000000000000000000000000000000000000}};",
4699                getLLVMStyleWithColumns(40));
4700 }
4701 
4702 TEST_F(FormatTest, DesignatedInitializers) {
4703   verifyFormat("const struct A a = {.a = 1, .b = 2};");
4704   verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n"
4705                "                    .bbbbbbbbbb = 2,\n"
4706                "                    .cccccccccc = 3,\n"
4707                "                    .dddddddddd = 4,\n"
4708                "                    .eeeeeeeeee = 5};");
4709   verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n"
4710                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n"
4711                "    .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n"
4712                "    .ccccccccccccccccccccccccccc = 3,\n"
4713                "    .ddddddddddddddddddddddddddd = 4,\n"
4714                "    .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};");
4715 
4716   verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};");
4717 
4718   verifyFormat("const struct A a = {[0] = 1, [1] = 2};");
4719   verifyFormat("const struct A a = {[1] = aaaaaaaaaa,\n"
4720                "                    [2] = bbbbbbbbbb,\n"
4721                "                    [3] = cccccccccc,\n"
4722                "                    [4] = dddddddddd,\n"
4723                "                    [5] = eeeeeeeeee};");
4724   verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n"
4725                "    [1] = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
4726                "    [2] = bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
4727                "    [3] = cccccccccccccccccccccccccccccccccccccc,\n"
4728                "    [4] = dddddddddddddddddddddddddddddddddddddd,\n"
4729                "    [5] = eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee};");
4730 }
4731 
4732 TEST_F(FormatTest, NestedStaticInitializers) {
4733   verifyFormat("static A x = {{{}}};\n");
4734   verifyFormat("static A x = {{{init1, init2, init3, init4},\n"
4735                "               {init1, init2, init3, init4}}};",
4736                getLLVMStyleWithColumns(50));
4737 
4738   verifyFormat("somes Status::global_reps[3] = {\n"
4739                "    {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n"
4740                "    {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n"
4741                "    {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};",
4742                getLLVMStyleWithColumns(60));
4743   verifyGoogleFormat("SomeType Status::global_reps[3] = {\n"
4744                      "    {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n"
4745                      "    {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n"
4746                      "    {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};");
4747   verifyFormat("CGRect cg_rect = {{rect.fLeft, rect.fTop},\n"
4748                "                  {rect.fRight - rect.fLeft, rect.fBottom - "
4749                "rect.fTop}};");
4750 
4751   verifyFormat(
4752       "SomeArrayOfSomeType a = {\n"
4753       "    {{1, 2, 3},\n"
4754       "     {1, 2, 3},\n"
4755       "     {111111111111111111111111111111, 222222222222222222222222222222,\n"
4756       "      333333333333333333333333333333},\n"
4757       "     {1, 2, 3},\n"
4758       "     {1, 2, 3}}};");
4759   verifyFormat(
4760       "SomeArrayOfSomeType a = {\n"
4761       "    {{1, 2, 3}},\n"
4762       "    {{1, 2, 3}},\n"
4763       "    {{111111111111111111111111111111, 222222222222222222222222222222,\n"
4764       "      333333333333333333333333333333}},\n"
4765       "    {{1, 2, 3}},\n"
4766       "    {{1, 2, 3}}};");
4767 
4768   verifyFormat("struct {\n"
4769                "  unsigned bit;\n"
4770                "  const char *const name;\n"
4771                "} kBitsToOs[] = {{kOsMac, \"Mac\"},\n"
4772                "                 {kOsWin, \"Windows\"},\n"
4773                "                 {kOsLinux, \"Linux\"},\n"
4774                "                 {kOsCrOS, \"Chrome OS\"}};");
4775   verifyFormat("struct {\n"
4776                "  unsigned bit;\n"
4777                "  const char *const name;\n"
4778                "} kBitsToOs[] = {\n"
4779                "    {kOsMac, \"Mac\"},\n"
4780                "    {kOsWin, \"Windows\"},\n"
4781                "    {kOsLinux, \"Linux\"},\n"
4782                "    {kOsCrOS, \"Chrome OS\"},\n"
4783                "};");
4784 }
4785 
4786 TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) {
4787   verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro("
4788                "                      \\\n"
4789                "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)");
4790 }
4791 
4792 TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) {
4793   verifyFormat("virtual void write(ELFWriter *writerrr,\n"
4794                "                   OwningPtr<FileOutputBuffer> &buffer) = 0;");
4795 
4796   // Do break defaulted and deleted functions.
4797   verifyFormat("virtual void ~Deeeeeeeestructor() =\n"
4798                "    default;",
4799                getLLVMStyleWithColumns(40));
4800   verifyFormat("virtual void ~Deeeeeeeestructor() =\n"
4801                "    delete;",
4802                getLLVMStyleWithColumns(40));
4803 }
4804 
4805 TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) {
4806   verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3",
4807                getLLVMStyleWithColumns(40));
4808   verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"",
4809                getLLVMStyleWithColumns(40));
4810   EXPECT_EQ("#define Q                              \\\n"
4811             "  \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\"    \\\n"
4812             "  \"aaaaaaaa.cpp\"",
4813             format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"",
4814                    getLLVMStyleWithColumns(40)));
4815 }
4816 
4817 TEST_F(FormatTest, UnderstandsLinePPDirective) {
4818   EXPECT_EQ("# 123 \"A string literal\"",
4819             format("   #     123    \"A string literal\""));
4820 }
4821 
4822 TEST_F(FormatTest, LayoutUnknownPPDirective) {
4823   EXPECT_EQ("#;", format("#;"));
4824   verifyFormat("#\n;\n;\n;");
4825 }
4826 
4827 TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) {
4828   EXPECT_EQ("#line 42 \"test\"\n",
4829             format("#  \\\n  line  \\\n  42  \\\n  \"test\"\n"));
4830   EXPECT_EQ("#define A B\n", format("#  \\\n define  \\\n    A  \\\n       B\n",
4831                                     getLLVMStyleWithColumns(12)));
4832 }
4833 
4834 TEST_F(FormatTest, EndOfFileEndsPPDirective) {
4835   EXPECT_EQ("#line 42 \"test\"",
4836             format("#  \\\n  line  \\\n  42  \\\n  \"test\""));
4837   EXPECT_EQ("#define A B", format("#  \\\n define  \\\n    A  \\\n       B"));
4838 }
4839 
4840 TEST_F(FormatTest, DoesntRemoveUnknownTokens) {
4841   verifyFormat("#define A \\x20");
4842   verifyFormat("#define A \\ x20");
4843   EXPECT_EQ("#define A \\ x20", format("#define A \\   x20"));
4844   verifyFormat("#define A ''");
4845   verifyFormat("#define A ''qqq");
4846   verifyFormat("#define A `qqq");
4847   verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");");
4848   EXPECT_EQ("const char *c = STRINGIFY(\n"
4849             "\\na : b);",
4850             format("const char * c = STRINGIFY(\n"
4851                    "\\na : b);"));
4852 
4853   verifyFormat("a\r\\");
4854   verifyFormat("a\v\\");
4855   verifyFormat("a\f\\");
4856 }
4857 
4858 TEST_F(FormatTest, IndentsPPDirectiveWithPPIndentWidth) {
4859   FormatStyle style = getChromiumStyle(FormatStyle::LK_Cpp);
4860   style.IndentWidth = 4;
4861   style.PPIndentWidth = 1;
4862 
4863   style.IndentPPDirectives = FormatStyle::PPDIS_None;
4864   verifyFormat("#ifdef __linux__\n"
4865                "void foo() {\n"
4866                "    int x = 0;\n"
4867                "}\n"
4868                "#define FOO\n"
4869                "#endif\n"
4870                "void bar() {\n"
4871                "    int y = 0;\n"
4872                "}\n",
4873                style);
4874 
4875   style.IndentPPDirectives = FormatStyle::PPDIS_AfterHash;
4876   verifyFormat("#ifdef __linux__\n"
4877                "void foo() {\n"
4878                "    int x = 0;\n"
4879                "}\n"
4880                "# define FOO foo\n"
4881                "#endif\n"
4882                "void bar() {\n"
4883                "    int y = 0;\n"
4884                "}\n",
4885                style);
4886 
4887   style.IndentPPDirectives = FormatStyle::PPDIS_BeforeHash;
4888   verifyFormat("#ifdef __linux__\n"
4889                "void foo() {\n"
4890                "    int x = 0;\n"
4891                "}\n"
4892                " #define FOO foo\n"
4893                "#endif\n"
4894                "void bar() {\n"
4895                "    int y = 0;\n"
4896                "}\n",
4897                style);
4898 }
4899 
4900 TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) {
4901   verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13));
4902   verifyFormat("#define A( \\\n    BB)", getLLVMStyleWithColumns(12));
4903   verifyFormat("#define A( \\\n    A, B)", getLLVMStyleWithColumns(12));
4904   // FIXME: We never break before the macro name.
4905   verifyFormat("#define AA( \\\n    B)", getLLVMStyleWithColumns(12));
4906 
4907   verifyFormat("#define A A\n#define A A");
4908   verifyFormat("#define A(X) A\n#define A A");
4909 
4910   verifyFormat("#define Something Other", getLLVMStyleWithColumns(23));
4911   verifyFormat("#define Something    \\\n  Other", getLLVMStyleWithColumns(22));
4912 }
4913 
4914 TEST_F(FormatTest, HandlePreprocessorDirectiveContext) {
4915   EXPECT_EQ("// somecomment\n"
4916             "#include \"a.h\"\n"
4917             "#define A(  \\\n"
4918             "    A, B)\n"
4919             "#include \"b.h\"\n"
4920             "// somecomment\n",
4921             format("  // somecomment\n"
4922                    "  #include \"a.h\"\n"
4923                    "#define A(A,\\\n"
4924                    "    B)\n"
4925                    "    #include \"b.h\"\n"
4926                    " // somecomment\n",
4927                    getLLVMStyleWithColumns(13)));
4928 }
4929 
4930 TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); }
4931 
4932 TEST_F(FormatTest, LayoutCodeInMacroDefinitions) {
4933   EXPECT_EQ("#define A    \\\n"
4934             "  c;         \\\n"
4935             "  e;\n"
4936             "f;",
4937             format("#define A c; e;\n"
4938                    "f;",
4939                    getLLVMStyleWithColumns(14)));
4940 }
4941 
4942 TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); }
4943 
4944 TEST_F(FormatTest, MacroDefinitionInsideStatement) {
4945   EXPECT_EQ("int x,\n"
4946             "#define A\n"
4947             "    y;",
4948             format("int x,\n#define A\ny;"));
4949 }
4950 
4951 TEST_F(FormatTest, HashInMacroDefinition) {
4952   EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle()));
4953   EXPECT_EQ("#define A(c) u#c", format("#define A(c) u#c", getLLVMStyle()));
4954   EXPECT_EQ("#define A(c) U#c", format("#define A(c) U#c", getLLVMStyle()));
4955   EXPECT_EQ("#define A(c) u8#c", format("#define A(c) u8#c", getLLVMStyle()));
4956   EXPECT_EQ("#define A(c) LR#c", format("#define A(c) LR#c", getLLVMStyle()));
4957   EXPECT_EQ("#define A(c) uR#c", format("#define A(c) uR#c", getLLVMStyle()));
4958   EXPECT_EQ("#define A(c) UR#c", format("#define A(c) UR#c", getLLVMStyle()));
4959   EXPECT_EQ("#define A(c) u8R#c", format("#define A(c) u8R#c", getLLVMStyle()));
4960   verifyFormat("#define A \\\n  b #c;", getLLVMStyleWithColumns(11));
4961   verifyFormat("#define A  \\\n"
4962                "  {        \\\n"
4963                "    f(#c); \\\n"
4964                "  }",
4965                getLLVMStyleWithColumns(11));
4966 
4967   verifyFormat("#define A(X)         \\\n"
4968                "  void function##X()",
4969                getLLVMStyleWithColumns(22));
4970 
4971   verifyFormat("#define A(a, b, c)   \\\n"
4972                "  void a##b##c()",
4973                getLLVMStyleWithColumns(22));
4974 
4975   verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
4976 }
4977 
4978 TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
4979   EXPECT_EQ("#define A (x)", format("#define A (x)"));
4980   EXPECT_EQ("#define A(x)", format("#define A(x)"));
4981 
4982   FormatStyle Style = getLLVMStyle();
4983   Style.SpaceBeforeParens = FormatStyle::SBPO_Never;
4984   verifyFormat("#define true ((foo)1)", Style);
4985   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
4986   verifyFormat("#define false((foo)0)", Style);
4987 }
4988 
4989 TEST_F(FormatTest, EmptyLinesInMacroDefinitions) {
4990   EXPECT_EQ("#define A b;", format("#define A \\\n"
4991                                    "          \\\n"
4992                                    "  b;",
4993                                    getLLVMStyleWithColumns(25)));
4994   EXPECT_EQ("#define A \\\n"
4995             "          \\\n"
4996             "  a;      \\\n"
4997             "  b;",
4998             format("#define A \\\n"
4999                    "          \\\n"
5000                    "  a;      \\\n"
5001                    "  b;",
5002                    getLLVMStyleWithColumns(11)));
5003   EXPECT_EQ("#define A \\\n"
5004             "  a;      \\\n"
5005             "          \\\n"
5006             "  b;",
5007             format("#define A \\\n"
5008                    "  a;      \\\n"
5009                    "          \\\n"
5010                    "  b;",
5011                    getLLVMStyleWithColumns(11)));
5012 }
5013 
5014 TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) {
5015   verifyIncompleteFormat("#define A :");
5016   verifyFormat("#define SOMECASES  \\\n"
5017                "  case 1:          \\\n"
5018                "  case 2\n",
5019                getLLVMStyleWithColumns(20));
5020   verifyFormat("#define MACRO(a) \\\n"
5021                "  if (a)         \\\n"
5022                "    f();         \\\n"
5023                "  else           \\\n"
5024                "    g()",
5025                getLLVMStyleWithColumns(18));
5026   verifyFormat("#define A template <typename T>");
5027   verifyIncompleteFormat("#define STR(x) #x\n"
5028                          "f(STR(this_is_a_string_literal{));");
5029   verifyFormat("#pragma omp threadprivate( \\\n"
5030                "    y)), // expected-warning",
5031                getLLVMStyleWithColumns(28));
5032   verifyFormat("#d, = };");
5033   verifyFormat("#if \"a");
5034   verifyIncompleteFormat("({\n"
5035                          "#define b     \\\n"
5036                          "  }           \\\n"
5037                          "  a\n"
5038                          "a",
5039                          getLLVMStyleWithColumns(15));
5040   verifyFormat("#define A     \\\n"
5041                "  {           \\\n"
5042                "    {\n"
5043                "#define B     \\\n"
5044                "  }           \\\n"
5045                "  }",
5046                getLLVMStyleWithColumns(15));
5047   verifyNoCrash("#if a\na(\n#else\n#endif\n{a");
5048   verifyNoCrash("a={0,1\n#if a\n#else\n;\n#endif\n}");
5049   verifyNoCrash("#if a\na(\n#else\n#endif\n) a {a,b,c,d,f,g};");
5050   verifyNoCrash("#ifdef A\n a(\n #else\n #endif\n) = []() {      \n)}");
5051 }
5052 
5053 TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) {
5054   verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline.
5055   EXPECT_EQ("class A : public QObject {\n"
5056             "  Q_OBJECT\n"
5057             "\n"
5058             "  A() {}\n"
5059             "};",
5060             format("class A  :  public QObject {\n"
5061                    "     Q_OBJECT\n"
5062                    "\n"
5063                    "  A() {\n}\n"
5064                    "}  ;"));
5065   EXPECT_EQ("MACRO\n"
5066             "/*static*/ int i;",
5067             format("MACRO\n"
5068                    " /*static*/ int   i;"));
5069   EXPECT_EQ("SOME_MACRO\n"
5070             "namespace {\n"
5071             "void f();\n"
5072             "} // namespace",
5073             format("SOME_MACRO\n"
5074                    "  namespace    {\n"
5075                    "void   f(  );\n"
5076                    "} // namespace"));
5077   // Only if the identifier contains at least 5 characters.
5078   EXPECT_EQ("HTTP f();", format("HTTP\nf();"));
5079   EXPECT_EQ("MACRO\nf();", format("MACRO\nf();"));
5080   // Only if everything is upper case.
5081   EXPECT_EQ("class A : public QObject {\n"
5082             "  Q_Object A() {}\n"
5083             "};",
5084             format("class A  :  public QObject {\n"
5085                    "     Q_Object\n"
5086                    "  A() {\n}\n"
5087                    "}  ;"));
5088 
5089   // Only if the next line can actually start an unwrapped line.
5090   EXPECT_EQ("SOME_WEIRD_LOG_MACRO << SomeThing;",
5091             format("SOME_WEIRD_LOG_MACRO\n"
5092                    "<< SomeThing;"));
5093 
5094   verifyFormat("VISIT_GL_CALL(GenBuffers, void, (GLsizei n, GLuint* buffers), "
5095                "(n, buffers))\n",
5096                getChromiumStyle(FormatStyle::LK_Cpp));
5097 
5098   // See PR41483
5099   EXPECT_EQ("/**/ FOO(a)\n"
5100             "FOO(b)",
5101             format("/**/ FOO(a)\n"
5102                    "FOO(b)"));
5103 }
5104 
5105 TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) {
5106   EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
5107             "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
5108             "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
5109             "class X {};\n"
5110             "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
5111             "int *createScopDetectionPass() { return 0; }",
5112             format("  INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
5113                    "  INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
5114                    "  INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
5115                    "  class X {};\n"
5116                    "  INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
5117                    "  int *createScopDetectionPass() { return 0; }"));
5118   // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as
5119   // braces, so that inner block is indented one level more.
5120   EXPECT_EQ("int q() {\n"
5121             "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
5122             "  IPC_MESSAGE_HANDLER(xxx, qqq)\n"
5123             "  IPC_END_MESSAGE_MAP()\n"
5124             "}",
5125             format("int q() {\n"
5126                    "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
5127                    "    IPC_MESSAGE_HANDLER(xxx, qqq)\n"
5128                    "  IPC_END_MESSAGE_MAP()\n"
5129                    "}"));
5130 
5131   // Same inside macros.
5132   EXPECT_EQ("#define LIST(L) \\\n"
5133             "  L(A)          \\\n"
5134             "  L(B)          \\\n"
5135             "  L(C)",
5136             format("#define LIST(L) \\\n"
5137                    "  L(A) \\\n"
5138                    "  L(B) \\\n"
5139                    "  L(C)",
5140                    getGoogleStyle()));
5141 
5142   // These must not be recognized as macros.
5143   EXPECT_EQ("int q() {\n"
5144             "  f(x);\n"
5145             "  f(x) {}\n"
5146             "  f(x)->g();\n"
5147             "  f(x)->*g();\n"
5148             "  f(x).g();\n"
5149             "  f(x) = x;\n"
5150             "  f(x) += x;\n"
5151             "  f(x) -= x;\n"
5152             "  f(x) *= x;\n"
5153             "  f(x) /= x;\n"
5154             "  f(x) %= x;\n"
5155             "  f(x) &= x;\n"
5156             "  f(x) |= x;\n"
5157             "  f(x) ^= x;\n"
5158             "  f(x) >>= x;\n"
5159             "  f(x) <<= x;\n"
5160             "  f(x)[y].z();\n"
5161             "  LOG(INFO) << x;\n"
5162             "  ifstream(x) >> x;\n"
5163             "}\n",
5164             format("int q() {\n"
5165                    "  f(x)\n;\n"
5166                    "  f(x)\n {}\n"
5167                    "  f(x)\n->g();\n"
5168                    "  f(x)\n->*g();\n"
5169                    "  f(x)\n.g();\n"
5170                    "  f(x)\n = x;\n"
5171                    "  f(x)\n += x;\n"
5172                    "  f(x)\n -= x;\n"
5173                    "  f(x)\n *= x;\n"
5174                    "  f(x)\n /= x;\n"
5175                    "  f(x)\n %= x;\n"
5176                    "  f(x)\n &= x;\n"
5177                    "  f(x)\n |= x;\n"
5178                    "  f(x)\n ^= x;\n"
5179                    "  f(x)\n >>= x;\n"
5180                    "  f(x)\n <<= x;\n"
5181                    "  f(x)\n[y].z();\n"
5182                    "  LOG(INFO)\n << x;\n"
5183                    "  ifstream(x)\n >> x;\n"
5184                    "}\n"));
5185   EXPECT_EQ("int q() {\n"
5186             "  F(x)\n"
5187             "  if (1) {\n"
5188             "  }\n"
5189             "  F(x)\n"
5190             "  while (1) {\n"
5191             "  }\n"
5192             "  F(x)\n"
5193             "  G(x);\n"
5194             "  F(x)\n"
5195             "  try {\n"
5196             "    Q();\n"
5197             "  } catch (...) {\n"
5198             "  }\n"
5199             "}\n",
5200             format("int q() {\n"
5201                    "F(x)\n"
5202                    "if (1) {}\n"
5203                    "F(x)\n"
5204                    "while (1) {}\n"
5205                    "F(x)\n"
5206                    "G(x);\n"
5207                    "F(x)\n"
5208                    "try { Q(); } catch (...) {}\n"
5209                    "}\n"));
5210   EXPECT_EQ("class A {\n"
5211             "  A() : t(0) {}\n"
5212             "  A(int i) noexcept() : {}\n"
5213             "  A(X x)\n" // FIXME: function-level try blocks are broken.
5214             "  try : t(0) {\n"
5215             "  } catch (...) {\n"
5216             "  }\n"
5217             "};",
5218             format("class A {\n"
5219                    "  A()\n : t(0) {}\n"
5220                    "  A(int i)\n noexcept() : {}\n"
5221                    "  A(X x)\n"
5222                    "  try : t(0) {} catch (...) {}\n"
5223                    "};"));
5224   FormatStyle Style = getLLVMStyle();
5225   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
5226   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Always;
5227   Style.BraceWrapping.AfterFunction = true;
5228   EXPECT_EQ("void f()\n"
5229             "try\n"
5230             "{\n"
5231             "}",
5232             format("void f() try {\n"
5233                    "}",
5234                    Style));
5235   EXPECT_EQ("class SomeClass {\n"
5236             "public:\n"
5237             "  SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
5238             "};",
5239             format("class SomeClass {\n"
5240                    "public:\n"
5241                    "  SomeClass()\n"
5242                    "  EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
5243                    "};"));
5244   EXPECT_EQ("class SomeClass {\n"
5245             "public:\n"
5246             "  SomeClass()\n"
5247             "      EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
5248             "};",
5249             format("class SomeClass {\n"
5250                    "public:\n"
5251                    "  SomeClass()\n"
5252                    "  EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
5253                    "};",
5254                    getLLVMStyleWithColumns(40)));
5255 
5256   verifyFormat("MACRO(>)");
5257 
5258   // Some macros contain an implicit semicolon.
5259   Style = getLLVMStyle();
5260   Style.StatementMacros.push_back("FOO");
5261   verifyFormat("FOO(a) int b = 0;");
5262   verifyFormat("FOO(a)\n"
5263                "int b = 0;",
5264                Style);
5265   verifyFormat("FOO(a);\n"
5266                "int b = 0;",
5267                Style);
5268   verifyFormat("FOO(argc, argv, \"4.0.2\")\n"
5269                "int b = 0;",
5270                Style);
5271   verifyFormat("FOO()\n"
5272                "int b = 0;",
5273                Style);
5274   verifyFormat("FOO\n"
5275                "int b = 0;",
5276                Style);
5277   verifyFormat("void f() {\n"
5278                "  FOO(a)\n"
5279                "  return a;\n"
5280                "}",
5281                Style);
5282   verifyFormat("FOO(a)\n"
5283                "FOO(b)",
5284                Style);
5285   verifyFormat("int a = 0;\n"
5286                "FOO(b)\n"
5287                "int c = 0;",
5288                Style);
5289   verifyFormat("int a = 0;\n"
5290                "int x = FOO(a)\n"
5291                "int b = 0;",
5292                Style);
5293   verifyFormat("void foo(int a) { FOO(a) }\n"
5294                "uint32_t bar() {}",
5295                Style);
5296 }
5297 
5298 TEST_F(FormatTest, FormatsMacrosWithZeroColumnWidth) {
5299   FormatStyle ZeroColumn = getLLVMStyleWithColumns(0);
5300 
5301   verifyFormat("#define A LOOOOOOOOOOOOOOOOOOONG() LOOOOOOOOOOOOOOOOOOONG()",
5302                ZeroColumn);
5303 }
5304 
5305 TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) {
5306   verifyFormat("#define A \\\n"
5307                "  f({     \\\n"
5308                "    g();  \\\n"
5309                "  });",
5310                getLLVMStyleWithColumns(11));
5311 }
5312 
5313 TEST_F(FormatTest, IndentPreprocessorDirectives) {
5314   FormatStyle Style = getLLVMStyleWithColumns(40);
5315   Style.IndentPPDirectives = FormatStyle::PPDIS_None;
5316   verifyFormat("#ifdef _WIN32\n"
5317                "#define A 0\n"
5318                "#ifdef VAR2\n"
5319                "#define B 1\n"
5320                "#include <someheader.h>\n"
5321                "#define MACRO                          \\\n"
5322                "  some_very_long_func_aaaaaaaaaa();\n"
5323                "#endif\n"
5324                "#else\n"
5325                "#define A 1\n"
5326                "#endif",
5327                Style);
5328   Style.IndentPPDirectives = FormatStyle::PPDIS_AfterHash;
5329   verifyFormat("#ifdef _WIN32\n"
5330                "#  define A 0\n"
5331                "#  ifdef VAR2\n"
5332                "#    define B 1\n"
5333                "#    include <someheader.h>\n"
5334                "#    define MACRO                      \\\n"
5335                "      some_very_long_func_aaaaaaaaaa();\n"
5336                "#  endif\n"
5337                "#else\n"
5338                "#  define A 1\n"
5339                "#endif",
5340                Style);
5341   verifyFormat("#if A\n"
5342                "#  define MACRO                        \\\n"
5343                "    void a(int x) {                    \\\n"
5344                "      b();                             \\\n"
5345                "      c();                             \\\n"
5346                "      d();                             \\\n"
5347                "      e();                             \\\n"
5348                "      f();                             \\\n"
5349                "    }\n"
5350                "#endif",
5351                Style);
5352   // Comments before include guard.
5353   verifyFormat("// file comment\n"
5354                "// file comment\n"
5355                "#ifndef HEADER_H\n"
5356                "#define HEADER_H\n"
5357                "code();\n"
5358                "#endif",
5359                Style);
5360   // Test with include guards.
5361   verifyFormat("#ifndef HEADER_H\n"
5362                "#define HEADER_H\n"
5363                "code();\n"
5364                "#endif",
5365                Style);
5366   // Include guards must have a #define with the same variable immediately
5367   // after #ifndef.
5368   verifyFormat("#ifndef NOT_GUARD\n"
5369                "#  define FOO\n"
5370                "code();\n"
5371                "#endif",
5372                Style);
5373 
5374   // Include guards must cover the entire file.
5375   verifyFormat("code();\n"
5376                "code();\n"
5377                "#ifndef NOT_GUARD\n"
5378                "#  define NOT_GUARD\n"
5379                "code();\n"
5380                "#endif",
5381                Style);
5382   verifyFormat("#ifndef NOT_GUARD\n"
5383                "#  define NOT_GUARD\n"
5384                "code();\n"
5385                "#endif\n"
5386                "code();",
5387                Style);
5388   // Test with trailing blank lines.
5389   verifyFormat("#ifndef HEADER_H\n"
5390                "#define HEADER_H\n"
5391                "code();\n"
5392                "#endif\n",
5393                Style);
5394   // Include guards don't have #else.
5395   verifyFormat("#ifndef NOT_GUARD\n"
5396                "#  define NOT_GUARD\n"
5397                "code();\n"
5398                "#else\n"
5399                "#endif",
5400                Style);
5401   verifyFormat("#ifndef NOT_GUARD\n"
5402                "#  define NOT_GUARD\n"
5403                "code();\n"
5404                "#elif FOO\n"
5405                "#endif",
5406                Style);
5407   // Non-identifier #define after potential include guard.
5408   verifyFormat("#ifndef FOO\n"
5409                "#  define 1\n"
5410                "#endif\n",
5411                Style);
5412   // #if closes past last non-preprocessor line.
5413   verifyFormat("#ifndef FOO\n"
5414                "#define FOO\n"
5415                "#if 1\n"
5416                "int i;\n"
5417                "#  define A 0\n"
5418                "#endif\n"
5419                "#endif\n",
5420                Style);
5421   // Don't crash if there is an #elif directive without a condition.
5422   verifyFormat("#if 1\n"
5423                "int x;\n"
5424                "#elif\n"
5425                "int y;\n"
5426                "#else\n"
5427                "int z;\n"
5428                "#endif",
5429                Style);
5430   // FIXME: This doesn't handle the case where there's code between the
5431   // #ifndef and #define but all other conditions hold. This is because when
5432   // the #define line is parsed, UnwrappedLineParser::Lines doesn't hold the
5433   // previous code line yet, so we can't detect it.
5434   EXPECT_EQ("#ifndef NOT_GUARD\n"
5435             "code();\n"
5436             "#define NOT_GUARD\n"
5437             "code();\n"
5438             "#endif",
5439             format("#ifndef NOT_GUARD\n"
5440                    "code();\n"
5441                    "#  define NOT_GUARD\n"
5442                    "code();\n"
5443                    "#endif",
5444                    Style));
5445   // FIXME: This doesn't handle cases where legitimate preprocessor lines may
5446   // be outside an include guard. Examples are #pragma once and
5447   // #pragma GCC diagnostic, or anything else that does not change the meaning
5448   // of the file if it's included multiple times.
5449   EXPECT_EQ("#ifdef WIN32\n"
5450             "#  pragma once\n"
5451             "#endif\n"
5452             "#ifndef HEADER_H\n"
5453             "#  define HEADER_H\n"
5454             "code();\n"
5455             "#endif",
5456             format("#ifdef WIN32\n"
5457                    "#  pragma once\n"
5458                    "#endif\n"
5459                    "#ifndef HEADER_H\n"
5460                    "#define HEADER_H\n"
5461                    "code();\n"
5462                    "#endif",
5463                    Style));
5464   // FIXME: This does not detect when there is a single non-preprocessor line
5465   // in front of an include-guard-like structure where other conditions hold
5466   // because ScopedLineState hides the line.
5467   EXPECT_EQ("code();\n"
5468             "#ifndef HEADER_H\n"
5469             "#define HEADER_H\n"
5470             "code();\n"
5471             "#endif",
5472             format("code();\n"
5473                    "#ifndef HEADER_H\n"
5474                    "#  define HEADER_H\n"
5475                    "code();\n"
5476                    "#endif",
5477                    Style));
5478   // Keep comments aligned with #, otherwise indent comments normally. These
5479   // tests cannot use verifyFormat because messUp manipulates leading
5480   // whitespace.
5481   {
5482     const char *Expected = ""
5483                            "void f() {\n"
5484                            "#if 1\n"
5485                            "// Preprocessor aligned.\n"
5486                            "#  define A 0\n"
5487                            "  // Code. Separated by blank line.\n"
5488                            "\n"
5489                            "#  define B 0\n"
5490                            "  // Code. Not aligned with #\n"
5491                            "#  define C 0\n"
5492                            "#endif";
5493     const char *ToFormat = ""
5494                            "void f() {\n"
5495                            "#if 1\n"
5496                            "// Preprocessor aligned.\n"
5497                            "#  define A 0\n"
5498                            "// Code. Separated by blank line.\n"
5499                            "\n"
5500                            "#  define B 0\n"
5501                            "   // Code. Not aligned with #\n"
5502                            "#  define C 0\n"
5503                            "#endif";
5504     EXPECT_EQ(Expected, format(ToFormat, Style));
5505     EXPECT_EQ(Expected, format(Expected, Style));
5506   }
5507   // Keep block quotes aligned.
5508   {
5509     const char *Expected = ""
5510                            "void f() {\n"
5511                            "#if 1\n"
5512                            "/* Preprocessor aligned. */\n"
5513                            "#  define A 0\n"
5514                            "  /* Code. Separated by blank line. */\n"
5515                            "\n"
5516                            "#  define B 0\n"
5517                            "  /* Code. Not aligned with # */\n"
5518                            "#  define C 0\n"
5519                            "#endif";
5520     const char *ToFormat = ""
5521                            "void f() {\n"
5522                            "#if 1\n"
5523                            "/* Preprocessor aligned. */\n"
5524                            "#  define A 0\n"
5525                            "/* Code. Separated by blank line. */\n"
5526                            "\n"
5527                            "#  define B 0\n"
5528                            "   /* Code. Not aligned with # */\n"
5529                            "#  define C 0\n"
5530                            "#endif";
5531     EXPECT_EQ(Expected, format(ToFormat, Style));
5532     EXPECT_EQ(Expected, format(Expected, Style));
5533   }
5534   // Keep comments aligned with un-indented directives.
5535   {
5536     const char *Expected = ""
5537                            "void f() {\n"
5538                            "// Preprocessor aligned.\n"
5539                            "#define A 0\n"
5540                            "  // Code. Separated by blank line.\n"
5541                            "\n"
5542                            "#define B 0\n"
5543                            "  // Code. Not aligned with #\n"
5544                            "#define C 0\n";
5545     const char *ToFormat = ""
5546                            "void f() {\n"
5547                            "// Preprocessor aligned.\n"
5548                            "#define A 0\n"
5549                            "// Code. Separated by blank line.\n"
5550                            "\n"
5551                            "#define B 0\n"
5552                            "   // Code. Not aligned with #\n"
5553                            "#define C 0\n";
5554     EXPECT_EQ(Expected, format(ToFormat, Style));
5555     EXPECT_EQ(Expected, format(Expected, Style));
5556   }
5557   // Test AfterHash with tabs.
5558   {
5559     FormatStyle Tabbed = Style;
5560     Tabbed.UseTab = FormatStyle::UT_Always;
5561     Tabbed.IndentWidth = 8;
5562     Tabbed.TabWidth = 8;
5563     verifyFormat("#ifdef _WIN32\n"
5564                  "#\tdefine A 0\n"
5565                  "#\tifdef VAR2\n"
5566                  "#\t\tdefine B 1\n"
5567                  "#\t\tinclude <someheader.h>\n"
5568                  "#\t\tdefine MACRO          \\\n"
5569                  "\t\t\tsome_very_long_func_aaaaaaaaaa();\n"
5570                  "#\tendif\n"
5571                  "#else\n"
5572                  "#\tdefine A 1\n"
5573                  "#endif",
5574                  Tabbed);
5575   }
5576 
5577   // Regression test: Multiline-macro inside include guards.
5578   verifyFormat("#ifndef HEADER_H\n"
5579                "#define HEADER_H\n"
5580                "#define A()        \\\n"
5581                "  int i;           \\\n"
5582                "  int j;\n"
5583                "#endif // HEADER_H",
5584                getLLVMStyleWithColumns(20));
5585 
5586   Style.IndentPPDirectives = FormatStyle::PPDIS_BeforeHash;
5587   // Basic before hash indent tests
5588   verifyFormat("#ifdef _WIN32\n"
5589                "  #define A 0\n"
5590                "  #ifdef VAR2\n"
5591                "    #define B 1\n"
5592                "    #include <someheader.h>\n"
5593                "    #define MACRO                      \\\n"
5594                "      some_very_long_func_aaaaaaaaaa();\n"
5595                "  #endif\n"
5596                "#else\n"
5597                "  #define A 1\n"
5598                "#endif",
5599                Style);
5600   verifyFormat("#if A\n"
5601                "  #define MACRO                        \\\n"
5602                "    void a(int x) {                    \\\n"
5603                "      b();                             \\\n"
5604                "      c();                             \\\n"
5605                "      d();                             \\\n"
5606                "      e();                             \\\n"
5607                "      f();                             \\\n"
5608                "    }\n"
5609                "#endif",
5610                Style);
5611   // Keep comments aligned with indented directives. These
5612   // tests cannot use verifyFormat because messUp manipulates leading
5613   // whitespace.
5614   {
5615     const char *Expected = "void f() {\n"
5616                            "// Aligned to preprocessor.\n"
5617                            "#if 1\n"
5618                            "  // Aligned to code.\n"
5619                            "  int a;\n"
5620                            "  #if 1\n"
5621                            "    // Aligned to preprocessor.\n"
5622                            "    #define A 0\n"
5623                            "  // Aligned to code.\n"
5624                            "  int b;\n"
5625                            "  #endif\n"
5626                            "#endif\n"
5627                            "}";
5628     const char *ToFormat = "void f() {\n"
5629                            "// Aligned to preprocessor.\n"
5630                            "#if 1\n"
5631                            "// Aligned to code.\n"
5632                            "int a;\n"
5633                            "#if 1\n"
5634                            "// Aligned to preprocessor.\n"
5635                            "#define A 0\n"
5636                            "// Aligned to code.\n"
5637                            "int b;\n"
5638                            "#endif\n"
5639                            "#endif\n"
5640                            "}";
5641     EXPECT_EQ(Expected, format(ToFormat, Style));
5642     EXPECT_EQ(Expected, format(Expected, Style));
5643   }
5644   {
5645     const char *Expected = "void f() {\n"
5646                            "/* Aligned to preprocessor. */\n"
5647                            "#if 1\n"
5648                            "  /* Aligned to code. */\n"
5649                            "  int a;\n"
5650                            "  #if 1\n"
5651                            "    /* Aligned to preprocessor. */\n"
5652                            "    #define A 0\n"
5653                            "  /* Aligned to code. */\n"
5654                            "  int b;\n"
5655                            "  #endif\n"
5656                            "#endif\n"
5657                            "}";
5658     const char *ToFormat = "void f() {\n"
5659                            "/* Aligned to preprocessor. */\n"
5660                            "#if 1\n"
5661                            "/* Aligned to code. */\n"
5662                            "int a;\n"
5663                            "#if 1\n"
5664                            "/* Aligned to preprocessor. */\n"
5665                            "#define A 0\n"
5666                            "/* Aligned to code. */\n"
5667                            "int b;\n"
5668                            "#endif\n"
5669                            "#endif\n"
5670                            "}";
5671     EXPECT_EQ(Expected, format(ToFormat, Style));
5672     EXPECT_EQ(Expected, format(Expected, Style));
5673   }
5674 
5675   // Test single comment before preprocessor
5676   verifyFormat("// Comment\n"
5677                "\n"
5678                "#if 1\n"
5679                "#endif",
5680                Style);
5681 }
5682 
5683 TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) {
5684   verifyFormat("{\n  { a #c; }\n}");
5685 }
5686 
5687 TEST_F(FormatTest, FormatUnbalancedStructuralElements) {
5688   EXPECT_EQ("#define A \\\n  {       \\\n    {\nint i;",
5689             format("#define A { {\nint i;", getLLVMStyleWithColumns(11)));
5690   EXPECT_EQ("#define A \\\n  }       \\\n  }\nint i;",
5691             format("#define A } }\nint i;", getLLVMStyleWithColumns(11)));
5692 }
5693 
5694 TEST_F(FormatTest, EscapedNewlines) {
5695   FormatStyle Narrow = getLLVMStyleWithColumns(11);
5696   EXPECT_EQ("#define A \\\n  int i;  \\\n  int j;",
5697             format("#define A \\\nint i;\\\n  int j;", Narrow));
5698   EXPECT_EQ("#define A\n\nint i;", format("#define A \\\n\n int i;"));
5699   EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();"));
5700   EXPECT_EQ("/* \\  \\  \\\n */", format("\\\n/* \\  \\  \\\n */"));
5701   EXPECT_EQ("<a\n\\\\\n>", format("<a\n\\\\\n>"));
5702 
5703   FormatStyle AlignLeft = getLLVMStyle();
5704   AlignLeft.AlignEscapedNewlines = FormatStyle::ENAS_Left;
5705   EXPECT_EQ("#define MACRO(x) \\\n"
5706             "private:         \\\n"
5707             "  int x(int a);\n",
5708             format("#define MACRO(x) \\\n"
5709                    "private:         \\\n"
5710                    "  int x(int a);\n",
5711                    AlignLeft));
5712 
5713   // CRLF line endings
5714   EXPECT_EQ("#define A \\\r\n  int i;  \\\r\n  int j;",
5715             format("#define A \\\r\nint i;\\\r\n  int j;", Narrow));
5716   EXPECT_EQ("#define A\r\n\r\nint i;", format("#define A \\\r\n\r\n int i;"));
5717   EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();"));
5718   EXPECT_EQ("/* \\  \\  \\\r\n */", format("\\\r\n/* \\  \\  \\\r\n */"));
5719   EXPECT_EQ("<a\r\n\\\\\r\n>", format("<a\r\n\\\\\r\n>"));
5720   EXPECT_EQ("#define MACRO(x) \\\r\n"
5721             "private:         \\\r\n"
5722             "  int x(int a);\r\n",
5723             format("#define MACRO(x) \\\r\n"
5724                    "private:         \\\r\n"
5725                    "  int x(int a);\r\n",
5726                    AlignLeft));
5727 
5728   FormatStyle DontAlign = getLLVMStyle();
5729   DontAlign.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
5730   DontAlign.MaxEmptyLinesToKeep = 3;
5731   // FIXME: can't use verifyFormat here because the newline before
5732   // "public:" is not inserted the first time it's reformatted
5733   EXPECT_EQ("#define A \\\n"
5734             "  class Foo { \\\n"
5735             "    void bar(); \\\n"
5736             "\\\n"
5737             "\\\n"
5738             "\\\n"
5739             "  public: \\\n"
5740             "    void baz(); \\\n"
5741             "  };",
5742             format("#define A \\\n"
5743                    "  class Foo { \\\n"
5744                    "    void bar(); \\\n"
5745                    "\\\n"
5746                    "\\\n"
5747                    "\\\n"
5748                    "  public: \\\n"
5749                    "    void baz(); \\\n"
5750                    "  };",
5751                    DontAlign));
5752 }
5753 
5754 TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) {
5755   verifyFormat("#define A \\\n"
5756                "  int v(  \\\n"
5757                "      a); \\\n"
5758                "  int i;",
5759                getLLVMStyleWithColumns(11));
5760 }
5761 
5762 TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) {
5763   EXPECT_EQ(
5764       "#define ALooooooooooooooooooooooooooooooooooooooongMacro("
5765       "                      \\\n"
5766       "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
5767       "\n"
5768       "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
5769       "    aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n",
5770       format("  #define   ALooooooooooooooooooooooooooooooooooooooongMacro("
5771              "\\\n"
5772              "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
5773              "  \n"
5774              "   AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
5775              "  aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n"));
5776 }
5777 
5778 TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) {
5779   EXPECT_EQ("int\n"
5780             "#define A\n"
5781             "    a;",
5782             format("int\n#define A\na;"));
5783   verifyFormat("functionCallTo(\n"
5784                "    someOtherFunction(\n"
5785                "        withSomeParameters, whichInSequence,\n"
5786                "        areLongerThanALine(andAnotherCall,\n"
5787                "#define A B\n"
5788                "                           withMoreParamters,\n"
5789                "                           whichStronglyInfluenceTheLayout),\n"
5790                "        andMoreParameters),\n"
5791                "    trailing);",
5792                getLLVMStyleWithColumns(69));
5793   verifyFormat("Foo::Foo()\n"
5794                "#ifdef BAR\n"
5795                "    : baz(0)\n"
5796                "#endif\n"
5797                "{\n"
5798                "}");
5799   verifyFormat("void f() {\n"
5800                "  if (true)\n"
5801                "#ifdef A\n"
5802                "    f(42);\n"
5803                "  x();\n"
5804                "#else\n"
5805                "    g();\n"
5806                "  x();\n"
5807                "#endif\n"
5808                "}");
5809   verifyFormat("void f(param1, param2,\n"
5810                "       param3,\n"
5811                "#ifdef A\n"
5812                "       param4(param5,\n"
5813                "#ifdef A1\n"
5814                "              param6,\n"
5815                "#ifdef A2\n"
5816                "              param7),\n"
5817                "#else\n"
5818                "              param8),\n"
5819                "       param9,\n"
5820                "#endif\n"
5821                "       param10,\n"
5822                "#endif\n"
5823                "       param11)\n"
5824                "#else\n"
5825                "       param12)\n"
5826                "#endif\n"
5827                "{\n"
5828                "  x();\n"
5829                "}",
5830                getLLVMStyleWithColumns(28));
5831   verifyFormat("#if 1\n"
5832                "int i;");
5833   verifyFormat("#if 1\n"
5834                "#endif\n"
5835                "#if 1\n"
5836                "#else\n"
5837                "#endif\n");
5838   verifyFormat("DEBUG({\n"
5839                "  return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
5840                "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
5841                "});\n"
5842                "#if a\n"
5843                "#else\n"
5844                "#endif");
5845 
5846   verifyIncompleteFormat("void f(\n"
5847                          "#if A\n"
5848                          ");\n"
5849                          "#else\n"
5850                          "#endif");
5851 }
5852 
5853 TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) {
5854   verifyFormat("#endif\n"
5855                "#if B");
5856 }
5857 
5858 TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) {
5859   FormatStyle SingleLine = getLLVMStyle();
5860   SingleLine.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_WithoutElse;
5861   verifyFormat("#if 0\n"
5862                "#elif 1\n"
5863                "#endif\n"
5864                "void foo() {\n"
5865                "  if (test) foo2();\n"
5866                "}",
5867                SingleLine);
5868 }
5869 
5870 TEST_F(FormatTest, LayoutBlockInsideParens) {
5871   verifyFormat("functionCall({ int i; });");
5872   verifyFormat("functionCall({\n"
5873                "  int i;\n"
5874                "  int j;\n"
5875                "});");
5876   verifyFormat("functionCall(\n"
5877                "    {\n"
5878                "      int i;\n"
5879                "      int j;\n"
5880                "    },\n"
5881                "    aaaa, bbbb, cccc);");
5882   verifyFormat("functionA(functionB({\n"
5883                "            int i;\n"
5884                "            int j;\n"
5885                "          }),\n"
5886                "          aaaa, bbbb, cccc);");
5887   verifyFormat("functionCall(\n"
5888                "    {\n"
5889                "      int i;\n"
5890                "      int j;\n"
5891                "    },\n"
5892                "    aaaa, bbbb, // comment\n"
5893                "    cccc);");
5894   verifyFormat("functionA(functionB({\n"
5895                "            int i;\n"
5896                "            int j;\n"
5897                "          }),\n"
5898                "          aaaa, bbbb, // comment\n"
5899                "          cccc);");
5900   verifyFormat("functionCall(aaaa, bbbb, { int i; });");
5901   verifyFormat("functionCall(aaaa, bbbb, {\n"
5902                "  int i;\n"
5903                "  int j;\n"
5904                "});");
5905   verifyFormat(
5906       "Aaa(\n" // FIXME: There shouldn't be a linebreak here.
5907       "    {\n"
5908       "      int i; // break\n"
5909       "    },\n"
5910       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
5911       "                                     ccccccccccccccccc));");
5912   verifyFormat("DEBUG({\n"
5913                "  if (a)\n"
5914                "    f();\n"
5915                "});");
5916 }
5917 
5918 TEST_F(FormatTest, LayoutBlockInsideStatement) {
5919   EXPECT_EQ("SOME_MACRO { int i; }\n"
5920             "int i;",
5921             format("  SOME_MACRO  {int i;}  int i;"));
5922 }
5923 
5924 TEST_F(FormatTest, LayoutNestedBlocks) {
5925   verifyFormat("void AddOsStrings(unsigned bitmask) {\n"
5926                "  struct s {\n"
5927                "    int i;\n"
5928                "  };\n"
5929                "  s kBitsToOs[] = {{10}};\n"
5930                "  for (int i = 0; i < 10; ++i)\n"
5931                "    return;\n"
5932                "}");
5933   verifyFormat("call(parameter, {\n"
5934                "  something();\n"
5935                "  // Comment using all columns.\n"
5936                "  somethingelse();\n"
5937                "});",
5938                getLLVMStyleWithColumns(40));
5939   verifyFormat("DEBUG( //\n"
5940                "    { f(); }, a);");
5941   verifyFormat("DEBUG( //\n"
5942                "    {\n"
5943                "      f(); //\n"
5944                "    },\n"
5945                "    a);");
5946 
5947   EXPECT_EQ("call(parameter, {\n"
5948             "  something();\n"
5949             "  // Comment too\n"
5950             "  // looooooooooong.\n"
5951             "  somethingElse();\n"
5952             "});",
5953             format("call(parameter, {\n"
5954                    "  something();\n"
5955                    "  // Comment too looooooooooong.\n"
5956                    "  somethingElse();\n"
5957                    "});",
5958                    getLLVMStyleWithColumns(29)));
5959   EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int   i; });"));
5960   EXPECT_EQ("DEBUG({ // comment\n"
5961             "  int i;\n"
5962             "});",
5963             format("DEBUG({ // comment\n"
5964                    "int  i;\n"
5965                    "});"));
5966   EXPECT_EQ("DEBUG({\n"
5967             "  int i;\n"
5968             "\n"
5969             "  // comment\n"
5970             "  int j;\n"
5971             "});",
5972             format("DEBUG({\n"
5973                    "  int  i;\n"
5974                    "\n"
5975                    "  // comment\n"
5976                    "  int  j;\n"
5977                    "});"));
5978 
5979   verifyFormat("DEBUG({\n"
5980                "  if (a)\n"
5981                "    return;\n"
5982                "});");
5983   verifyGoogleFormat("DEBUG({\n"
5984                      "  if (a) return;\n"
5985                      "});");
5986   FormatStyle Style = getGoogleStyle();
5987   Style.ColumnLimit = 45;
5988   verifyFormat("Debug(\n"
5989                "    aaaaa,\n"
5990                "    {\n"
5991                "      if (aaaaaaaaaaaaaaaaaaaaaaaa) return;\n"
5992                "    },\n"
5993                "    a);",
5994                Style);
5995 
5996   verifyFormat("SomeFunction({MACRO({ return output; }), b});");
5997 
5998   verifyNoCrash("^{v^{a}}");
5999 }
6000 
6001 TEST_F(FormatTest, FormatNestedBlocksInMacros) {
6002   EXPECT_EQ("#define MACRO()                     \\\n"
6003             "  Debug(aaa, /* force line break */ \\\n"
6004             "        {                           \\\n"
6005             "          int i;                    \\\n"
6006             "          int j;                    \\\n"
6007             "        })",
6008             format("#define   MACRO()   Debug(aaa,  /* force line break */ \\\n"
6009                    "          {  int   i;  int  j;   })",
6010                    getGoogleStyle()));
6011 
6012   EXPECT_EQ("#define A                                       \\\n"
6013             "  [] {                                          \\\n"
6014             "    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx(        \\\n"
6015             "        xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); \\\n"
6016             "  }",
6017             format("#define A [] { xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx( \\\n"
6018                    "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); }",
6019                    getGoogleStyle()));
6020 }
6021 
6022 TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
6023   EXPECT_EQ("{}", format("{}"));
6024   verifyFormat("enum E {};");
6025   verifyFormat("enum E {}");
6026   FormatStyle Style = getLLVMStyle();
6027   Style.SpaceInEmptyBlock = true;
6028   EXPECT_EQ("void f() { }", format("void f() {}", Style));
6029   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
6030   EXPECT_EQ("while (true) { }", format("while (true) {}", Style));
6031   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
6032   Style.BraceWrapping.BeforeElse = false;
6033   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Always;
6034   verifyFormat("if (a)\n"
6035                "{\n"
6036                "} else if (b)\n"
6037                "{\n"
6038                "} else\n"
6039                "{ }",
6040                Style);
6041   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Never;
6042   verifyFormat("if (a) {\n"
6043                "} else if (b) {\n"
6044                "} else {\n"
6045                "}",
6046                Style);
6047   Style.BraceWrapping.BeforeElse = true;
6048   verifyFormat("if (a) { }\n"
6049                "else if (b) { }\n"
6050                "else { }",
6051                Style);
6052 }
6053 
6054 TEST_F(FormatTest, FormatBeginBlockEndMacros) {
6055   FormatStyle Style = getLLVMStyle();
6056   Style.MacroBlockBegin = "^[A-Z_]+_BEGIN$";
6057   Style.MacroBlockEnd = "^[A-Z_]+_END$";
6058   verifyFormat("FOO_BEGIN\n"
6059                "  FOO_ENTRY\n"
6060                "FOO_END",
6061                Style);
6062   verifyFormat("FOO_BEGIN\n"
6063                "  NESTED_FOO_BEGIN\n"
6064                "    NESTED_FOO_ENTRY\n"
6065                "  NESTED_FOO_END\n"
6066                "FOO_END",
6067                Style);
6068   verifyFormat("FOO_BEGIN(Foo, Bar)\n"
6069                "  int x;\n"
6070                "  x = 1;\n"
6071                "FOO_END(Baz)",
6072                Style);
6073 }
6074 
6075 //===----------------------------------------------------------------------===//
6076 // Line break tests.
6077 //===----------------------------------------------------------------------===//
6078 
6079 TEST_F(FormatTest, PreventConfusingIndents) {
6080   verifyFormat(
6081       "void f() {\n"
6082       "  SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
6083       "                         parameter, parameter, parameter)),\n"
6084       "                     SecondLongCall(parameter));\n"
6085       "}");
6086   verifyFormat(
6087       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6088       "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
6089       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6090       "    aaaaaaaaaaaaaaaaaaaaaaaa);");
6091   verifyFormat(
6092       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6093       "    [aaaaaaaaaaaaaaaaaaaaaaaa\n"
6094       "         [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n"
6095       "         [aaaaaaaaaaaaaaaaaaaaaaaa]];");
6096   verifyFormat(
6097       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
6098       "    aaaaaaaaaaaaaaaaaaaaaaaa<\n"
6099       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n"
6100       "    aaaaaaaaaaaaaaaaaaaaaaaa>;");
6101   verifyFormat("int a = bbbb && ccc &&\n"
6102                "        fffff(\n"
6103                "#define A Just forcing a new line\n"
6104                "            ddd);");
6105 }
6106 
6107 TEST_F(FormatTest, LineBreakingInBinaryExpressions) {
6108   verifyFormat(
6109       "bool aaaaaaa =\n"
6110       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n"
6111       "    bbbbbbbb();");
6112   verifyFormat(
6113       "bool aaaaaaa =\n"
6114       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n"
6115       "    bbbbbbbb();");
6116 
6117   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
6118                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n"
6119                "    ccccccccc == ddddddddddd;");
6120   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
6121                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n"
6122                "    ccccccccc == ddddddddddd;");
6123   verifyFormat(
6124       "bool aaaaaaaaaaaaaaaaaaaaa =\n"
6125       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n"
6126       "    ccccccccc == ddddddddddd;");
6127 
6128   verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
6129                "                 aaaaaa) &&\n"
6130                "         bbbbbb && cccccc;");
6131   verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
6132                "                 aaaaaa) >>\n"
6133                "         bbbbbb;");
6134   verifyFormat("aa = Whitespaces.addUntouchableComment(\n"
6135                "    SourceMgr.getSpellingColumnNumber(\n"
6136                "        TheLine.Last->FormatTok.Tok.getLocation()) -\n"
6137                "    1);");
6138 
6139   verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
6140                "     bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n"
6141                "    cccccc) {\n}");
6142   verifyFormat("if constexpr ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
6143                "               bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaa\n"
6144                "              cccccc) {\n}");
6145   verifyFormat("if CONSTEXPR ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
6146                "               bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaa\n"
6147                "              cccccc) {\n}");
6148   verifyFormat("b = a &&\n"
6149                "    // Comment\n"
6150                "    b.c && d;");
6151 
6152   // If the LHS of a comparison is not a binary expression itself, the
6153   // additional linebreak confuses many people.
6154   verifyFormat(
6155       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6156       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n"
6157       "}");
6158   verifyFormat(
6159       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6160       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
6161       "}");
6162   verifyFormat(
6163       "if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n"
6164       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
6165       "}");
6166   verifyFormat(
6167       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6168       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) <=> 5) {\n"
6169       "}");
6170   // Even explicit parentheses stress the precedence enough to make the
6171   // additional break unnecessary.
6172   verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6173                "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
6174                "}");
6175   // This cases is borderline, but with the indentation it is still readable.
6176   verifyFormat(
6177       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6178       "        aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6179       "                               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
6180       "}",
6181       getLLVMStyleWithColumns(75));
6182 
6183   // If the LHS is a binary expression, we should still use the additional break
6184   // as otherwise the formatting hides the operator precedence.
6185   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6186                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
6187                "    5) {\n"
6188                "}");
6189   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6190                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa <=>\n"
6191                "    5) {\n"
6192                "}");
6193 
6194   FormatStyle OnePerLine = getLLVMStyle();
6195   OnePerLine.BinPackParameters = false;
6196   verifyFormat(
6197       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
6198       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
6199       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}",
6200       OnePerLine);
6201 
6202   verifyFormat("int i = someFunction(aaaaaaa, 0)\n"
6203                "                .aaa(aaaaaaaaaaaaa) *\n"
6204                "            aaaaaaa +\n"
6205                "        aaaaaaa;",
6206                getLLVMStyleWithColumns(40));
6207 }
6208 
6209 TEST_F(FormatTest, ExpressionIndentation) {
6210   verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6211                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6212                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
6213                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
6214                "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n"
6215                "                     bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n"
6216                "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
6217                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n"
6218                "                 ccccccccccccccccccccccccccccccccccccccccc;");
6219   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
6220                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6221                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
6222                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
6223   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6224                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
6225                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
6226                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
6227   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
6228                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
6229                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6230                "        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
6231   verifyFormat("if () {\n"
6232                "} else if (aaaaa && bbbbb > // break\n"
6233                "                        ccccc) {\n"
6234                "}");
6235   verifyFormat("if () {\n"
6236                "} else if constexpr (aaaaa && bbbbb > // break\n"
6237                "                                  ccccc) {\n"
6238                "}");
6239   verifyFormat("if () {\n"
6240                "} else if CONSTEXPR (aaaaa && bbbbb > // break\n"
6241                "                                  ccccc) {\n"
6242                "}");
6243   verifyFormat("if () {\n"
6244                "} else if (aaaaa &&\n"
6245                "           bbbbb > // break\n"
6246                "               ccccc &&\n"
6247                "           ddddd) {\n"
6248                "}");
6249 
6250   // Presence of a trailing comment used to change indentation of b.
6251   verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n"
6252                "       b;\n"
6253                "return aaaaaaaaaaaaaaaaaaa +\n"
6254                "       b; //",
6255                getLLVMStyleWithColumns(30));
6256 }
6257 
6258 TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) {
6259   // Not sure what the best system is here. Like this, the LHS can be found
6260   // immediately above an operator (everything with the same or a higher
6261   // indent). The RHS is aligned right of the operator and so compasses
6262   // everything until something with the same indent as the operator is found.
6263   // FIXME: Is this a good system?
6264   FormatStyle Style = getLLVMStyle();
6265   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
6266   verifyFormat(
6267       "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6268       "                     + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6269       "                     + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6270       "                 == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6271       "                            * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6272       "                        + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6273       "             && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6274       "                        * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6275       "                    > ccccccccccccccccccccccccccccccccccccccccc;",
6276       Style);
6277   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6278                "            * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6279                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6280                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
6281                Style);
6282   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6283                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6284                "              * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6285                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
6286                Style);
6287   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6288                "    == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6289                "               * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6290                "           + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
6291                Style);
6292   verifyFormat("if () {\n"
6293                "} else if (aaaaa\n"
6294                "           && bbbbb // break\n"
6295                "                  > ccccc) {\n"
6296                "}",
6297                Style);
6298   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6299                "       && bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
6300                Style);
6301   verifyFormat("return (a)\n"
6302                "       // comment\n"
6303                "       + b;",
6304                Style);
6305   verifyFormat(
6306       "int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6307       "                 * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6308       "             + cc;",
6309       Style);
6310 
6311   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6312                "    = aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
6313                Style);
6314 
6315   // Forced by comments.
6316   verifyFormat(
6317       "unsigned ContentSize =\n"
6318       "    sizeof(int16_t)   // DWARF ARange version number\n"
6319       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
6320       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
6321       "    + sizeof(int8_t); // Segment Size (in bytes)");
6322 
6323   verifyFormat("return boost::fusion::at_c<0>(iiii).second\n"
6324                "       == boost::fusion::at_c<1>(iiii).second;",
6325                Style);
6326 
6327   Style.ColumnLimit = 60;
6328   verifyFormat("zzzzzzzzzz\n"
6329                "    = bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6330                "      >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);",
6331                Style);
6332 
6333   Style.ColumnLimit = 80;
6334   Style.IndentWidth = 4;
6335   Style.TabWidth = 4;
6336   Style.UseTab = FormatStyle::UT_Always;
6337   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
6338   Style.AlignOperands = FormatStyle::OAS_DontAlign;
6339   EXPECT_EQ("return someVeryVeryLongConditionThatBarelyFitsOnALine\n"
6340             "\t&& (someOtherLongishConditionPart1\n"
6341             "\t\t|| someOtherEvenLongerNestedConditionPart2);",
6342             format("return someVeryVeryLongConditionThatBarelyFitsOnALine && "
6343                    "(someOtherLongishConditionPart1 || "
6344                    "someOtherEvenLongerNestedConditionPart2);",
6345                    Style));
6346 }
6347 
6348 TEST_F(FormatTest, ExpressionIndentationStrictAlign) {
6349   FormatStyle Style = getLLVMStyle();
6350   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
6351   Style.AlignOperands = FormatStyle::OAS_AlignAfterOperator;
6352 
6353   verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6354                "                   + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6355                "                   + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6356                "              == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6357                "                         * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6358                "                     + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6359                "          && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6360                "                     * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6361                "                 > ccccccccccccccccccccccccccccccccccccccccc;",
6362                Style);
6363   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6364                "            * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6365                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6366                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
6367                Style);
6368   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6369                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6370                "              * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6371                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
6372                Style);
6373   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6374                "    == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6375                "               * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6376                "           + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
6377                Style);
6378   verifyFormat("if () {\n"
6379                "} else if (aaaaa\n"
6380                "           && bbbbb // break\n"
6381                "                  > ccccc) {\n"
6382                "}",
6383                Style);
6384   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6385                "    && bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
6386                Style);
6387   verifyFormat("return (a)\n"
6388                "     // comment\n"
6389                "     + b;",
6390                Style);
6391   verifyFormat(
6392       "int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6393       "               * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6394       "           + cc;",
6395       Style);
6396   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
6397                "     : bbbbbbbbbbbbbbbb ? 2222222222222222\n"
6398                "                        : 3333333333333333;",
6399                Style);
6400   verifyFormat(
6401       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaa    ? bbbbbbbbbbbbbbbbbb\n"
6402       "                           : ccccccccccccccc ? dddddddddddddddddd\n"
6403       "                                             : eeeeeeeeeeeeeeeeee)\n"
6404       "     : bbbbbbbbbbbbbbbb ? 2222222222222222\n"
6405       "                        : 3333333333333333;",
6406       Style);
6407   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6408                "    = aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
6409                Style);
6410 
6411   verifyFormat("return boost::fusion::at_c<0>(iiii).second\n"
6412                "    == boost::fusion::at_c<1>(iiii).second;",
6413                Style);
6414 
6415   Style.ColumnLimit = 60;
6416   verifyFormat("zzzzzzzzzzzzz\n"
6417                "    = bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6418                "   >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);",
6419                Style);
6420 
6421   // Forced by comments.
6422   Style.ColumnLimit = 80;
6423   verifyFormat(
6424       "unsigned ContentSize\n"
6425       "    = sizeof(int16_t) // DWARF ARange version number\n"
6426       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
6427       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
6428       "    + sizeof(int8_t); // Segment Size (in bytes)",
6429       Style);
6430 
6431   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
6432   verifyFormat(
6433       "unsigned ContentSize =\n"
6434       "    sizeof(int16_t)   // DWARF ARange version number\n"
6435       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
6436       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
6437       "    + sizeof(int8_t); // Segment Size (in bytes)",
6438       Style);
6439 
6440   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
6441   verifyFormat(
6442       "unsigned ContentSize =\n"
6443       "    sizeof(int16_t)   // DWARF ARange version number\n"
6444       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
6445       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
6446       "    + sizeof(int8_t); // Segment Size (in bytes)",
6447       Style);
6448 }
6449 
6450 TEST_F(FormatTest, EnforcedOperatorWraps) {
6451   // Here we'd like to wrap after the || operators, but a comment is forcing an
6452   // earlier wrap.
6453   verifyFormat("bool x = aaaaa //\n"
6454                "         || bbbbb\n"
6455                "         //\n"
6456                "         || cccc;");
6457 }
6458 
6459 TEST_F(FormatTest, NoOperandAlignment) {
6460   FormatStyle Style = getLLVMStyle();
6461   Style.AlignOperands = FormatStyle::OAS_DontAlign;
6462   verifyFormat("aaaaaaaaaaaaaa(aaaaaaaaaaaa,\n"
6463                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6464                "                   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6465                Style);
6466   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
6467   verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6468                "            + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6469                "            + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6470                "        == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6471                "                * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6472                "            + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6473                "    && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6474                "            * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6475                "        > ccccccccccccccccccccccccccccccccccccccccc;",
6476                Style);
6477 
6478   verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6479                "        * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6480                "    + cc;",
6481                Style);
6482   verifyFormat("int a = aa\n"
6483                "    + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
6484                "        * cccccccccccccccccccccccccccccccccccc;\n",
6485                Style);
6486 
6487   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
6488   verifyFormat("return (a > b\n"
6489                "    // comment1\n"
6490                "    // comment2\n"
6491                "    || c);",
6492                Style);
6493 }
6494 
6495 TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) {
6496   FormatStyle Style = getLLVMStyle();
6497   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
6498   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
6499                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6500                "    + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
6501                Style);
6502 }
6503 
6504 TEST_F(FormatTest, AllowBinPackingInsideArguments) {
6505   FormatStyle Style = getLLVMStyleWithColumns(40);
6506   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
6507   Style.BinPackArguments = false;
6508   verifyFormat("void test() {\n"
6509                "  someFunction(\n"
6510                "      this + argument + is + quite\n"
6511                "      + long + so + it + gets + wrapped\n"
6512                "      + but + remains + bin - packed);\n"
6513                "}",
6514                Style);
6515   verifyFormat("void test() {\n"
6516                "  someFunction(arg1,\n"
6517                "               this + argument + is\n"
6518                "                   + quite + long + so\n"
6519                "                   + it + gets + wrapped\n"
6520                "                   + but + remains + bin\n"
6521                "                   - packed,\n"
6522                "               arg3);\n"
6523                "}",
6524                Style);
6525   verifyFormat("void test() {\n"
6526                "  someFunction(\n"
6527                "      arg1,\n"
6528                "      this + argument + has\n"
6529                "          + anotherFunc(nested,\n"
6530                "                        calls + whose\n"
6531                "                            + arguments\n"
6532                "                            + are + also\n"
6533                "                            + wrapped,\n"
6534                "                        in + addition)\n"
6535                "          + to + being + bin - packed,\n"
6536                "      arg3);\n"
6537                "}",
6538                Style);
6539 
6540   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
6541   verifyFormat("void test() {\n"
6542                "  someFunction(\n"
6543                "      arg1,\n"
6544                "      this + argument + has +\n"
6545                "          anotherFunc(nested,\n"
6546                "                      calls + whose +\n"
6547                "                          arguments +\n"
6548                "                          are + also +\n"
6549                "                          wrapped,\n"
6550                "                      in + addition) +\n"
6551                "          to + being + bin - packed,\n"
6552                "      arg3);\n"
6553                "}",
6554                Style);
6555 }
6556 
6557 TEST_F(FormatTest, BreakBinaryOperatorsInPresenceOfTemplates) {
6558   auto Style = getLLVMStyleWithColumns(45);
6559   EXPECT_EQ(Style.BreakBeforeBinaryOperators, FormatStyle::BOS_None);
6560   verifyFormat("bool b =\n"
6561                "    is_default_constructible_v<hash<T>> and\n"
6562                "    is_copy_constructible_v<hash<T>> and\n"
6563                "    is_move_constructible_v<hash<T>> and\n"
6564                "    is_copy_assignable_v<hash<T>> and\n"
6565                "    is_move_assignable_v<hash<T>> and\n"
6566                "    is_destructible_v<hash<T>> and\n"
6567                "    is_swappable_v<hash<T>> and\n"
6568                "    is_callable_v<hash<T>(T)>;",
6569                Style);
6570 
6571   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
6572   verifyFormat("bool b = is_default_constructible_v<hash<T>>\n"
6573                "         and is_copy_constructible_v<hash<T>>\n"
6574                "         and is_move_constructible_v<hash<T>>\n"
6575                "         and is_copy_assignable_v<hash<T>>\n"
6576                "         and is_move_assignable_v<hash<T>>\n"
6577                "         and is_destructible_v<hash<T>>\n"
6578                "         and is_swappable_v<hash<T>>\n"
6579                "         and is_callable_v<hash<T>(T)>;",
6580                Style);
6581 
6582   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
6583   verifyFormat("bool b = is_default_constructible_v<hash<T>>\n"
6584                "         and is_copy_constructible_v<hash<T>>\n"
6585                "         and is_move_constructible_v<hash<T>>\n"
6586                "         and is_copy_assignable_v<hash<T>>\n"
6587                "         and is_move_assignable_v<hash<T>>\n"
6588                "         and is_destructible_v<hash<T>>\n"
6589                "         and is_swappable_v<hash<T>>\n"
6590                "         and is_callable_v<hash<T>(T)>;",
6591                Style);
6592 }
6593 
6594 TEST_F(FormatTest, ConstructorInitializers) {
6595   verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
6596   verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}",
6597                getLLVMStyleWithColumns(45));
6598   verifyFormat("Constructor()\n"
6599                "    : Inttializer(FitsOnTheLine) {}",
6600                getLLVMStyleWithColumns(44));
6601   verifyFormat("Constructor()\n"
6602                "    : Inttializer(FitsOnTheLine) {}",
6603                getLLVMStyleWithColumns(43));
6604 
6605   verifyFormat("template <typename T>\n"
6606                "Constructor() : Initializer(FitsOnTheLine) {}",
6607                getLLVMStyleWithColumns(45));
6608 
6609   verifyFormat(
6610       "SomeClass::Constructor()\n"
6611       "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
6612 
6613   verifyFormat(
6614       "SomeClass::Constructor()\n"
6615       "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
6616       "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}");
6617   verifyFormat(
6618       "SomeClass::Constructor()\n"
6619       "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6620       "      aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
6621   verifyFormat("Constructor(aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6622                "            aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
6623                "    : aaaaaaaaaa(aaaaaa) {}");
6624 
6625   verifyFormat("Constructor()\n"
6626                "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6627                "      aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6628                "                               aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6629                "      aaaaaaaaaaaaaaaaaaaaaaa() {}");
6630 
6631   verifyFormat("Constructor()\n"
6632                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6633                "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
6634 
6635   verifyFormat("Constructor(int Parameter = 0)\n"
6636                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
6637                "      aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}");
6638   verifyFormat("Constructor()\n"
6639                "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n"
6640                "}",
6641                getLLVMStyleWithColumns(60));
6642   verifyFormat("Constructor()\n"
6643                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6644                "          aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}");
6645 
6646   // Here a line could be saved by splitting the second initializer onto two
6647   // lines, but that is not desirable.
6648   verifyFormat("Constructor()\n"
6649                "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
6650                "      aaaaaaaaaaa(aaaaaaaaaaa),\n"
6651                "      aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
6652 
6653   FormatStyle OnePerLine = getLLVMStyle();
6654   OnePerLine.PackConstructorInitializers = FormatStyle::PCIS_Never;
6655   verifyFormat("MyClass::MyClass()\n"
6656                "    : a(a),\n"
6657                "      b(b),\n"
6658                "      c(c) {}",
6659                OnePerLine);
6660   verifyFormat("MyClass::MyClass()\n"
6661                "    : a(a), // comment\n"
6662                "      b(b),\n"
6663                "      c(c) {}",
6664                OnePerLine);
6665   verifyFormat("MyClass::MyClass(int a)\n"
6666                "    : b(a),      // comment\n"
6667                "      c(a + 1) { // lined up\n"
6668                "}",
6669                OnePerLine);
6670   verifyFormat("Constructor()\n"
6671                "    : a(b, b, b) {}",
6672                OnePerLine);
6673   OnePerLine.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6674   OnePerLine.AllowAllParametersOfDeclarationOnNextLine = false;
6675   verifyFormat("SomeClass::Constructor()\n"
6676                "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
6677                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
6678                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
6679                OnePerLine);
6680   verifyFormat("SomeClass::Constructor()\n"
6681                "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
6682                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
6683                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
6684                OnePerLine);
6685   verifyFormat("MyClass::MyClass(int var)\n"
6686                "    : some_var_(var),            // 4 space indent\n"
6687                "      some_other_var_(var + 1) { // lined up\n"
6688                "}",
6689                OnePerLine);
6690   verifyFormat("Constructor()\n"
6691                "    : aaaaa(aaaaaa),\n"
6692                "      aaaaa(aaaaaa),\n"
6693                "      aaaaa(aaaaaa),\n"
6694                "      aaaaa(aaaaaa),\n"
6695                "      aaaaa(aaaaaa) {}",
6696                OnePerLine);
6697   verifyFormat("Constructor()\n"
6698                "    : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n"
6699                "            aaaaaaaaaaaaaaaaaaaaaa) {}",
6700                OnePerLine);
6701   OnePerLine.BinPackParameters = false;
6702   verifyFormat(
6703       "Constructor()\n"
6704       "    : aaaaaaaaaaaaaaaaaaaaaaaa(\n"
6705       "          aaaaaaaaaaa().aaa(),\n"
6706       "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
6707       OnePerLine);
6708   OnePerLine.ColumnLimit = 60;
6709   verifyFormat("Constructor()\n"
6710                "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
6711                "      bbbbbbbbbbbbbbbbbbbbbbbb(b) {}",
6712                OnePerLine);
6713 
6714   EXPECT_EQ("Constructor()\n"
6715             "    : // Comment forcing unwanted break.\n"
6716             "      aaaa(aaaa) {}",
6717             format("Constructor() :\n"
6718                    "    // Comment forcing unwanted break.\n"
6719                    "    aaaa(aaaa) {}"));
6720 }
6721 
6722 TEST_F(FormatTest, AllowAllConstructorInitializersOnNextLine) {
6723   FormatStyle Style = getLLVMStyleWithColumns(60);
6724   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
6725   Style.BinPackParameters = false;
6726 
6727   for (int i = 0; i < 4; ++i) {
6728     // Test all combinations of parameters that should not have an effect.
6729     Style.AllowAllParametersOfDeclarationOnNextLine = i & 1;
6730     Style.AllowAllArgumentsOnNextLine = i & 2;
6731 
6732     Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6733     Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
6734     verifyFormat("Constructor()\n"
6735                  "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
6736                  Style);
6737     verifyFormat("Constructor() : a(a), b(b) {}", Style);
6738 
6739     Style.PackConstructorInitializers = FormatStyle::PCIS_CurrentLine;
6740     verifyFormat("Constructor()\n"
6741                  "    : aaaaaaaaaaaaaaaaaaaa(a)\n"
6742                  "    , bbbbbbbbbbbbbbbbbbbbb(b) {}",
6743                  Style);
6744     verifyFormat("Constructor() : a(a), b(b) {}", Style);
6745 
6746     Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
6747     Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6748     verifyFormat("Constructor()\n"
6749                  "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
6750                  Style);
6751 
6752     Style.PackConstructorInitializers = FormatStyle::PCIS_CurrentLine;
6753     verifyFormat("Constructor()\n"
6754                  "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
6755                  "      bbbbbbbbbbbbbbbbbbbbb(b) {}",
6756                  Style);
6757 
6758     Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
6759     Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6760     verifyFormat("Constructor() :\n"
6761                  "    aaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
6762                  Style);
6763 
6764     Style.PackConstructorInitializers = FormatStyle::PCIS_CurrentLine;
6765     verifyFormat("Constructor() :\n"
6766                  "    aaaaaaaaaaaaaaaaaa(a),\n"
6767                  "    bbbbbbbbbbbbbbbbbbbbb(b) {}",
6768                  Style);
6769   }
6770 
6771   // Test interactions between AllowAllParametersOfDeclarationOnNextLine and
6772   // AllowAllConstructorInitializersOnNextLine in all
6773   // BreakConstructorInitializers modes
6774   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
6775   Style.AllowAllParametersOfDeclarationOnNextLine = true;
6776   verifyFormat("SomeClassWithALongName::Constructor(\n"
6777                "    int aaaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbbb)\n"
6778                "    : aaaaaaaaaaaaaaaaaaaa(a)\n"
6779                "    , bbbbbbbbbbbbbbbbbbbbb(b) {}",
6780                Style);
6781 
6782   Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6783   verifyFormat("SomeClassWithALongName::Constructor(\n"
6784                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
6785                "    int bbbbbbbbbbbbb,\n"
6786                "    int cccccccccccccccc)\n"
6787                "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
6788                Style);
6789 
6790   Style.AllowAllParametersOfDeclarationOnNextLine = false;
6791   Style.PackConstructorInitializers = FormatStyle::PCIS_CurrentLine;
6792   verifyFormat("SomeClassWithALongName::Constructor(\n"
6793                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
6794                "    int bbbbbbbbbbbbb)\n"
6795                "    : aaaaaaaaaaaaaaaaaaaa(a)\n"
6796                "    , bbbbbbbbbbbbbbbbbbbbb(b) {}",
6797                Style);
6798 
6799   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
6800 
6801   Style.AllowAllParametersOfDeclarationOnNextLine = true;
6802   verifyFormat("SomeClassWithALongName::Constructor(\n"
6803                "    int aaaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbbb)\n"
6804                "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
6805                "      bbbbbbbbbbbbbbbbbbbbb(b) {}",
6806                Style);
6807 
6808   Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6809   verifyFormat("SomeClassWithALongName::Constructor(\n"
6810                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
6811                "    int bbbbbbbbbbbbb,\n"
6812                "    int cccccccccccccccc)\n"
6813                "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
6814                Style);
6815 
6816   Style.AllowAllParametersOfDeclarationOnNextLine = false;
6817   Style.PackConstructorInitializers = FormatStyle::PCIS_CurrentLine;
6818   verifyFormat("SomeClassWithALongName::Constructor(\n"
6819                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
6820                "    int bbbbbbbbbbbbb)\n"
6821                "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
6822                "      bbbbbbbbbbbbbbbbbbbbb(b) {}",
6823                Style);
6824 
6825   Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
6826   Style.AllowAllParametersOfDeclarationOnNextLine = true;
6827   verifyFormat("SomeClassWithALongName::Constructor(\n"
6828                "    int aaaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbbb) :\n"
6829                "    aaaaaaaaaaaaaaaaaaaa(a),\n"
6830                "    bbbbbbbbbbbbbbbbbbbbb(b) {}",
6831                Style);
6832 
6833   Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6834   verifyFormat("SomeClassWithALongName::Constructor(\n"
6835                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
6836                "    int bbbbbbbbbbbbb,\n"
6837                "    int cccccccccccccccc) :\n"
6838                "    aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
6839                Style);
6840 
6841   Style.AllowAllParametersOfDeclarationOnNextLine = false;
6842   Style.PackConstructorInitializers = FormatStyle::PCIS_CurrentLine;
6843   verifyFormat("SomeClassWithALongName::Constructor(\n"
6844                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
6845                "    int bbbbbbbbbbbbb) :\n"
6846                "    aaaaaaaaaaaaaaaaaaaa(a),\n"
6847                "    bbbbbbbbbbbbbbbbbbbbb(b) {}",
6848                Style);
6849 }
6850 
6851 TEST_F(FormatTest, AllowAllArgumentsOnNextLine) {
6852   FormatStyle Style = getLLVMStyleWithColumns(60);
6853   Style.BinPackArguments = false;
6854   for (int i = 0; i < 4; ++i) {
6855     // Test all combinations of parameters that should not have an effect.
6856     Style.AllowAllParametersOfDeclarationOnNextLine = i & 1;
6857     Style.PackConstructorInitializers =
6858         i & 2 ? FormatStyle::PCIS_BinPack : FormatStyle::PCIS_Never;
6859 
6860     Style.AllowAllArgumentsOnNextLine = true;
6861     verifyFormat("void foo() {\n"
6862                  "  FunctionCallWithReallyLongName(\n"
6863                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbb);\n"
6864                  "}",
6865                  Style);
6866     Style.AllowAllArgumentsOnNextLine = false;
6867     verifyFormat("void foo() {\n"
6868                  "  FunctionCallWithReallyLongName(\n"
6869                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6870                  "      bbbbbbbbbbbb);\n"
6871                  "}",
6872                  Style);
6873 
6874     Style.AllowAllArgumentsOnNextLine = true;
6875     verifyFormat("void foo() {\n"
6876                  "  auto VariableWithReallyLongName = {\n"
6877                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbb};\n"
6878                  "}",
6879                  Style);
6880     Style.AllowAllArgumentsOnNextLine = false;
6881     verifyFormat("void foo() {\n"
6882                  "  auto VariableWithReallyLongName = {\n"
6883                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6884                  "      bbbbbbbbbbbb};\n"
6885                  "}",
6886                  Style);
6887   }
6888 
6889   // This parameter should not affect declarations.
6890   Style.BinPackParameters = false;
6891   Style.AllowAllArgumentsOnNextLine = false;
6892   Style.AllowAllParametersOfDeclarationOnNextLine = true;
6893   verifyFormat("void FunctionCallWithReallyLongName(\n"
6894                "    int aaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbb);",
6895                Style);
6896   Style.AllowAllParametersOfDeclarationOnNextLine = false;
6897   verifyFormat("void FunctionCallWithReallyLongName(\n"
6898                "    int aaaaaaaaaaaaaaaaaaaaaaa,\n"
6899                "    int bbbbbbbbbbbb);",
6900                Style);
6901 }
6902 
6903 TEST_F(FormatTest, AllowAllArgumentsOnNextLineDontAlign) {
6904   // Check that AllowAllArgumentsOnNextLine is respected for both BAS_DontAlign
6905   // and BAS_Align.
6906   FormatStyle Style = getLLVMStyleWithColumns(35);
6907   StringRef Input = "functionCall(paramA, paramB, paramC);\n"
6908                     "void functionDecl(int A, int B, int C);";
6909   Style.AllowAllArgumentsOnNextLine = false;
6910   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
6911   EXPECT_EQ(StringRef("functionCall(paramA, paramB,\n"
6912                       "    paramC);\n"
6913                       "void functionDecl(int A, int B,\n"
6914                       "    int C);"),
6915             format(Input, Style));
6916   Style.AlignAfterOpenBracket = FormatStyle::BAS_Align;
6917   EXPECT_EQ(StringRef("functionCall(paramA, paramB,\n"
6918                       "             paramC);\n"
6919                       "void functionDecl(int A, int B,\n"
6920                       "                  int C);"),
6921             format(Input, Style));
6922   // However, BAS_AlwaysBreak should take precedence over
6923   // AllowAllArgumentsOnNextLine.
6924   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
6925   EXPECT_EQ(StringRef("functionCall(\n"
6926                       "    paramA, paramB, paramC);\n"
6927                       "void functionDecl(\n"
6928                       "    int A, int B, int C);"),
6929             format(Input, Style));
6930 
6931   // When AllowAllArgumentsOnNextLine is set, we prefer breaking before the
6932   // first argument.
6933   Style.AllowAllArgumentsOnNextLine = true;
6934   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
6935   EXPECT_EQ(StringRef("functionCall(\n"
6936                       "    paramA, paramB, paramC);\n"
6937                       "void functionDecl(\n"
6938                       "    int A, int B, int C);"),
6939             format(Input, Style));
6940   // It wouldn't fit on one line with aligned parameters so this setting
6941   // doesn't change anything for BAS_Align.
6942   Style.AlignAfterOpenBracket = FormatStyle::BAS_Align;
6943   EXPECT_EQ(StringRef("functionCall(paramA, paramB,\n"
6944                       "             paramC);\n"
6945                       "void functionDecl(int A, int B,\n"
6946                       "                  int C);"),
6947             format(Input, Style));
6948   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
6949   EXPECT_EQ(StringRef("functionCall(\n"
6950                       "    paramA, paramB, paramC);\n"
6951                       "void functionDecl(\n"
6952                       "    int A, int B, int C);"),
6953             format(Input, Style));
6954 }
6955 
6956 TEST_F(FormatTest, BreakConstructorInitializersAfterColon) {
6957   FormatStyle Style = getLLVMStyle();
6958   Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
6959 
6960   verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
6961   verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}",
6962                getStyleWithColumns(Style, 45));
6963   verifyFormat("Constructor() :\n"
6964                "    Initializer(FitsOnTheLine) {}",
6965                getStyleWithColumns(Style, 44));
6966   verifyFormat("Constructor() :\n"
6967                "    Initializer(FitsOnTheLine) {}",
6968                getStyleWithColumns(Style, 43));
6969 
6970   verifyFormat("template <typename T>\n"
6971                "Constructor() : Initializer(FitsOnTheLine) {}",
6972                getStyleWithColumns(Style, 50));
6973   Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
6974   verifyFormat(
6975       "SomeClass::Constructor() :\n"
6976       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}",
6977       Style);
6978 
6979   Style.PackConstructorInitializers = FormatStyle::PCIS_BinPack;
6980   verifyFormat(
6981       "SomeClass::Constructor() :\n"
6982       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}",
6983       Style);
6984 
6985   verifyFormat(
6986       "SomeClass::Constructor() :\n"
6987       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
6988       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
6989       Style);
6990   verifyFormat(
6991       "SomeClass::Constructor() :\n"
6992       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6993       "    aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}",
6994       Style);
6995   verifyFormat("Constructor(aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6996                "            aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
6997                "    aaaaaaaaaa(aaaaaa) {}",
6998                Style);
6999 
7000   verifyFormat("Constructor() :\n"
7001                "    aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
7002                "    aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7003                "                             aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
7004                "    aaaaaaaaaaaaaaaaaaaaaaa() {}",
7005                Style);
7006 
7007   verifyFormat("Constructor() :\n"
7008                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7009                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
7010                Style);
7011 
7012   verifyFormat("Constructor(int Parameter = 0) :\n"
7013                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
7014                "    aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}",
7015                Style);
7016   verifyFormat("Constructor() :\n"
7017                "    aaaaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n"
7018                "}",
7019                getStyleWithColumns(Style, 60));
7020   verifyFormat("Constructor() :\n"
7021                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7022                "        aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}",
7023                Style);
7024 
7025   // Here a line could be saved by splitting the second initializer onto two
7026   // lines, but that is not desirable.
7027   verifyFormat("Constructor() :\n"
7028                "    aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
7029                "    aaaaaaaaaaa(aaaaaaaaaaa),\n"
7030                "    aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
7031                Style);
7032 
7033   FormatStyle OnePerLine = Style;
7034   OnePerLine.PackConstructorInitializers = FormatStyle::PCIS_CurrentLine;
7035   verifyFormat("SomeClass::Constructor() :\n"
7036                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
7037                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
7038                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
7039                OnePerLine);
7040   verifyFormat("SomeClass::Constructor() :\n"
7041                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
7042                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
7043                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
7044                OnePerLine);
7045   verifyFormat("MyClass::MyClass(int var) :\n"
7046                "    some_var_(var),            // 4 space indent\n"
7047                "    some_other_var_(var + 1) { // lined up\n"
7048                "}",
7049                OnePerLine);
7050   verifyFormat("Constructor() :\n"
7051                "    aaaaa(aaaaaa),\n"
7052                "    aaaaa(aaaaaa),\n"
7053                "    aaaaa(aaaaaa),\n"
7054                "    aaaaa(aaaaaa),\n"
7055                "    aaaaa(aaaaaa) {}",
7056                OnePerLine);
7057   verifyFormat("Constructor() :\n"
7058                "    aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n"
7059                "          aaaaaaaaaaaaaaaaaaaaaa) {}",
7060                OnePerLine);
7061   OnePerLine.BinPackParameters = false;
7062   verifyFormat("Constructor() :\n"
7063                "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
7064                "        aaaaaaaaaaa().aaa(),\n"
7065                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
7066                OnePerLine);
7067   OnePerLine.ColumnLimit = 60;
7068   verifyFormat("Constructor() :\n"
7069                "    aaaaaaaaaaaaaaaaaaaa(a),\n"
7070                "    bbbbbbbbbbbbbbbbbbbbbbbb(b) {}",
7071                OnePerLine);
7072 
7073   EXPECT_EQ("Constructor() :\n"
7074             "    // Comment forcing unwanted break.\n"
7075             "    aaaa(aaaa) {}",
7076             format("Constructor() :\n"
7077                    "    // Comment forcing unwanted break.\n"
7078                    "    aaaa(aaaa) {}",
7079                    Style));
7080 
7081   Style.ColumnLimit = 0;
7082   verifyFormat("SomeClass::Constructor() :\n"
7083                "    a(a) {}",
7084                Style);
7085   verifyFormat("SomeClass::Constructor() noexcept :\n"
7086                "    a(a) {}",
7087                Style);
7088   verifyFormat("SomeClass::Constructor() :\n"
7089                "    a(a), b(b), c(c) {}",
7090                Style);
7091   verifyFormat("SomeClass::Constructor() :\n"
7092                "    a(a) {\n"
7093                "  foo();\n"
7094                "  bar();\n"
7095                "}",
7096                Style);
7097 
7098   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
7099   verifyFormat("SomeClass::Constructor() :\n"
7100                "    a(a), b(b), c(c) {\n"
7101                "}",
7102                Style);
7103   verifyFormat("SomeClass::Constructor() :\n"
7104                "    a(a) {\n"
7105                "}",
7106                Style);
7107 
7108   Style.ColumnLimit = 80;
7109   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
7110   Style.ConstructorInitializerIndentWidth = 2;
7111   verifyFormat("SomeClass::Constructor() : a(a), b(b), c(c) {}", Style);
7112   verifyFormat("SomeClass::Constructor() :\n"
7113                "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7114                "  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}",
7115                Style);
7116 
7117   // `ConstructorInitializerIndentWidth` actually applies to InheritanceList as
7118   // well
7119   Style.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
7120   verifyFormat(
7121       "class SomeClass\n"
7122       "  : public aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7123       "    public bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {};",
7124       Style);
7125   Style.BreakInheritanceList = FormatStyle::BILS_BeforeComma;
7126   verifyFormat(
7127       "class SomeClass\n"
7128       "  : public aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7129       "  , public bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {};",
7130       Style);
7131   Style.BreakInheritanceList = FormatStyle::BILS_AfterColon;
7132   verifyFormat(
7133       "class SomeClass :\n"
7134       "  public aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7135       "  public bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {};",
7136       Style);
7137   Style.BreakInheritanceList = FormatStyle::BILS_AfterComma;
7138   verifyFormat(
7139       "class SomeClass\n"
7140       "  : public aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7141       "    public bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {};",
7142       Style);
7143 }
7144 
7145 #ifndef EXPENSIVE_CHECKS
7146 // Expensive checks enables libstdc++ checking which includes validating the
7147 // state of ranges used in std::priority_queue - this blows out the
7148 // runtime/scalability of the function and makes this test unacceptably slow.
7149 TEST_F(FormatTest, MemoizationTests) {
7150   // This breaks if the memoization lookup does not take \c Indent and
7151   // \c LastSpace into account.
7152   verifyFormat(
7153       "extern CFRunLoopTimerRef\n"
7154       "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n"
7155       "                     CFTimeInterval interval, CFOptionFlags flags,\n"
7156       "                     CFIndex order, CFRunLoopTimerCallBack callout,\n"
7157       "                     CFRunLoopTimerContext *context) {}");
7158 
7159   // Deep nesting somewhat works around our memoization.
7160   verifyFormat(
7161       "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
7162       "    aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
7163       "        aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
7164       "            aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
7165       "                aaaaa())))))))))))))))))))))))))))))))))))))));",
7166       getLLVMStyleWithColumns(65));
7167   verifyFormat(
7168       "aaaaa(\n"
7169       "    aaaaa,\n"
7170       "    aaaaa(\n"
7171       "        aaaaa,\n"
7172       "        aaaaa(\n"
7173       "            aaaaa,\n"
7174       "            aaaaa(\n"
7175       "                aaaaa,\n"
7176       "                aaaaa(\n"
7177       "                    aaaaa,\n"
7178       "                    aaaaa(\n"
7179       "                        aaaaa,\n"
7180       "                        aaaaa(\n"
7181       "                            aaaaa,\n"
7182       "                            aaaaa(\n"
7183       "                                aaaaa,\n"
7184       "                                aaaaa(\n"
7185       "                                    aaaaa,\n"
7186       "                                    aaaaa(\n"
7187       "                                        aaaaa,\n"
7188       "                                        aaaaa(\n"
7189       "                                            aaaaa,\n"
7190       "                                            aaaaa(\n"
7191       "                                                aaaaa,\n"
7192       "                                                aaaaa))))))))))));",
7193       getLLVMStyleWithColumns(65));
7194   verifyFormat(
7195       "a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(), a), a), a), a),\n"
7196       "                                  a),\n"
7197       "                                a),\n"
7198       "                              a),\n"
7199       "                            a),\n"
7200       "                          a),\n"
7201       "                        a),\n"
7202       "                      a),\n"
7203       "                    a),\n"
7204       "                  a),\n"
7205       "                a),\n"
7206       "              a),\n"
7207       "            a),\n"
7208       "          a),\n"
7209       "        a),\n"
7210       "      a),\n"
7211       "    a),\n"
7212       "  a)",
7213       getLLVMStyleWithColumns(65));
7214 
7215   // This test takes VERY long when memoization is broken.
7216   FormatStyle OnePerLine = getLLVMStyle();
7217   OnePerLine.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
7218   OnePerLine.BinPackParameters = false;
7219   std::string input = "Constructor()\n"
7220                       "    : aaaa(a,\n";
7221   for (unsigned i = 0, e = 80; i != e; ++i)
7222     input += "           a,\n";
7223   input += "           a) {}";
7224   verifyFormat(input, OnePerLine);
7225 }
7226 #endif
7227 
7228 TEST_F(FormatTest, BreaksAsHighAsPossible) {
7229   verifyFormat(
7230       "void f() {\n"
7231       "  if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
7232       "      (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
7233       "    f();\n"
7234       "}");
7235   verifyFormat("if (Intervals[i].getRange().getFirst() <\n"
7236                "    Intervals[i - 1].getRange().getLast()) {\n}");
7237 }
7238 
7239 TEST_F(FormatTest, BreaksFunctionDeclarations) {
7240   // Principially, we break function declarations in a certain order:
7241   // 1) break amongst arguments.
7242   verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n"
7243                "                              Cccccccccccccc cccccccccccccc);");
7244   verifyFormat("template <class TemplateIt>\n"
7245                "SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n"
7246                "                            TemplateIt *stop) {}");
7247 
7248   // 2) break after return type.
7249   verifyFormat(
7250       "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7251       "bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);",
7252       getGoogleStyle());
7253 
7254   // 3) break after (.
7255   verifyFormat(
7256       "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n"
7257       "    Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);",
7258       getGoogleStyle());
7259 
7260   // 4) break before after nested name specifiers.
7261   verifyFormat(
7262       "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7263       "SomeClasssssssssssssssssssssssssssssssssssssss::\n"
7264       "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);",
7265       getGoogleStyle());
7266 
7267   // However, there are exceptions, if a sufficient amount of lines can be
7268   // saved.
7269   // FIXME: The precise cut-offs wrt. the number of saved lines might need some
7270   // more adjusting.
7271   verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
7272                "                                  Cccccccccccccc cccccccccc,\n"
7273                "                                  Cccccccccccccc cccccccccc,\n"
7274                "                                  Cccccccccccccc cccccccccc,\n"
7275                "                                  Cccccccccccccc cccccccccc);");
7276   verifyFormat(
7277       "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7278       "bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
7279       "            Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
7280       "            Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);",
7281       getGoogleStyle());
7282   verifyFormat(
7283       "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
7284       "                                          Cccccccccccccc cccccccccc,\n"
7285       "                                          Cccccccccccccc cccccccccc,\n"
7286       "                                          Cccccccccccccc cccccccccc,\n"
7287       "                                          Cccccccccccccc cccccccccc,\n"
7288       "                                          Cccccccccccccc cccccccccc,\n"
7289       "                                          Cccccccccccccc cccccccccc);");
7290   verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
7291                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
7292                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
7293                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
7294                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);");
7295 
7296   // Break after multi-line parameters.
7297   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7298                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7299                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7300                "    bbbb bbbb);");
7301   verifyFormat("void SomeLoooooooooooongFunction(\n"
7302                "    std::unique_ptr<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n"
7303                "        aaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7304                "    int bbbbbbbbbbbbb);");
7305 
7306   // Treat overloaded operators like other functions.
7307   verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
7308                "operator>(const SomeLoooooooooooooooooooooooooogType &other);");
7309   verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
7310                "operator>>(const SomeLooooooooooooooooooooooooogType &other);");
7311   verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
7312                "operator<<(const SomeLooooooooooooooooooooooooogType &other);");
7313   verifyGoogleFormat(
7314       "SomeLoooooooooooooooooooooooooooooogType operator>>(\n"
7315       "    const SomeLooooooooogType &a, const SomeLooooooooogType &b);");
7316   verifyGoogleFormat(
7317       "SomeLoooooooooooooooooooooooooooooogType operator<<(\n"
7318       "    const SomeLooooooooogType &a, const SomeLooooooooogType &b);");
7319   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7320                "    int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);");
7321   verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n"
7322                "aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);");
7323   verifyGoogleFormat(
7324       "typename aaaaaaaaaa<aaaaaa>::aaaaaaaaaaa\n"
7325       "aaaaaaaaaa<aaaaaa>::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7326       "    bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}");
7327   verifyGoogleFormat("template <typename T>\n"
7328                      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7329                      "aaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaaaaa(\n"
7330                      "    aaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaa);");
7331 
7332   FormatStyle Style = getLLVMStyle();
7333   Style.PointerAlignment = FormatStyle::PAS_Left;
7334   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7335                "    aaaaaaaaaaaaaaaaaaaaaaaaa* const aaaaaaaaaaaa) {}",
7336                Style);
7337   verifyFormat("void aaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*\n"
7338                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
7339                Style);
7340 }
7341 
7342 TEST_F(FormatTest, DontBreakBeforeQualifiedOperator) {
7343   // Regression test for https://bugs.llvm.org/show_bug.cgi?id=40516:
7344   // Prefer keeping `::` followed by `operator` together.
7345   EXPECT_EQ("const aaaa::bbbbbbb &\n"
7346             "ccccccccc::operator++() {\n"
7347             "  stuff();\n"
7348             "}",
7349             format("const aaaa::bbbbbbb\n"
7350                    "&ccccccccc::operator++() { stuff(); }",
7351                    getLLVMStyleWithColumns(40)));
7352 }
7353 
7354 TEST_F(FormatTest, TrailingReturnType) {
7355   verifyFormat("auto foo() -> int;\n");
7356   // correct trailing return type spacing
7357   verifyFormat("auto operator->() -> int;\n");
7358   verifyFormat("auto operator++(int) -> int;\n");
7359 
7360   verifyFormat("struct S {\n"
7361                "  auto bar() const -> int;\n"
7362                "};");
7363   verifyFormat("template <size_t Order, typename T>\n"
7364                "auto load_img(const std::string &filename)\n"
7365                "    -> alias::tensor<Order, T, mem::tag::cpu> {}");
7366   verifyFormat("auto SomeFunction(A aaaaaaaaaaaaaaaaaaaaa) const\n"
7367                "    -> decltype(f(aaaaaaaaaaaaaaaaaaaaa)) {}");
7368   verifyFormat("auto doSomething(Aaaaaa *aaaaaa) -> decltype(aaaaaa->f()) {}");
7369   verifyFormat("template <typename T>\n"
7370                "auto aaaaaaaaaaaaaaaaaaaaaa(T t)\n"
7371                "    -> decltype(eaaaaaaaaaaaaaaa<T>(t.a).aaaaaaaa());");
7372 
7373   // Not trailing return types.
7374   verifyFormat("void f() { auto a = b->c(); }");
7375   verifyFormat("auto a = p->foo();");
7376   verifyFormat("int a = p->foo();");
7377   verifyFormat("auto lmbd = [] NOEXCEPT -> int { return 0; };");
7378 }
7379 
7380 TEST_F(FormatTest, DeductionGuides) {
7381   verifyFormat("template <class T> A(const T &, const T &) -> A<T &>;");
7382   verifyFormat("template <class T> explicit A(T &, T &&) -> A<T>;");
7383   verifyFormat("template <class... Ts> S(Ts...) -> S<Ts...>;");
7384   verifyFormat(
7385       "template <class... T>\n"
7386       "array(T &&...t) -> array<std::common_type_t<T...>, sizeof...(T)>;");
7387   verifyFormat("template <class T> A() -> A<decltype(p->foo<3>())>;");
7388   verifyFormat("template <class T> A() -> A<decltype(foo<traits<1>>)>;");
7389   verifyFormat("template <class T> A() -> A<sizeof(p->foo<1>)>;");
7390   verifyFormat("template <class T> A() -> A<(3 < 2)>;");
7391   verifyFormat("template <class T> A() -> A<((3) < (2))>;");
7392   verifyFormat("template <class T> x() -> x<1>;");
7393   verifyFormat("template <class T> explicit x(T &) -> x<1>;");
7394 
7395   // Ensure not deduction guides.
7396   verifyFormat("c()->f<int>();");
7397   verifyFormat("x()->foo<1>;");
7398   verifyFormat("x = p->foo<3>();");
7399   verifyFormat("x()->x<1>();");
7400   verifyFormat("x()->x<1>;");
7401 }
7402 
7403 TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) {
7404   // Avoid breaking before trailing 'const' or other trailing annotations, if
7405   // they are not function-like.
7406   FormatStyle Style = getGoogleStyleWithColumns(47);
7407   verifyFormat("void someLongFunction(\n"
7408                "    int someLoooooooooooooongParameter) const {\n}",
7409                getLLVMStyleWithColumns(47));
7410   verifyFormat("LoooooongReturnType\n"
7411                "someLoooooooongFunction() const {}",
7412                getLLVMStyleWithColumns(47));
7413   verifyFormat("LoooooongReturnType someLoooooooongFunction()\n"
7414                "    const {}",
7415                Style);
7416   verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
7417                "                  aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;");
7418   verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
7419                "                  aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;");
7420   verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
7421                "                  aaaaa aaaaaaaaaaaaaaaaaaaa) override final;");
7422   verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n"
7423                "                   aaaaaaaaaaa aaaaa) const override;");
7424   verifyGoogleFormat(
7425       "virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7426       "    const override;");
7427 
7428   // Even if the first parameter has to be wrapped.
7429   verifyFormat("void someLongFunction(\n"
7430                "    int someLongParameter) const {}",
7431                getLLVMStyleWithColumns(46));
7432   verifyFormat("void someLongFunction(\n"
7433                "    int someLongParameter) const {}",
7434                Style);
7435   verifyFormat("void someLongFunction(\n"
7436                "    int someLongParameter) override {}",
7437                Style);
7438   verifyFormat("void someLongFunction(\n"
7439                "    int someLongParameter) OVERRIDE {}",
7440                Style);
7441   verifyFormat("void someLongFunction(\n"
7442                "    int someLongParameter) final {}",
7443                Style);
7444   verifyFormat("void someLongFunction(\n"
7445                "    int someLongParameter) FINAL {}",
7446                Style);
7447   verifyFormat("void someLongFunction(\n"
7448                "    int parameter) const override {}",
7449                Style);
7450 
7451   Style.BreakBeforeBraces = FormatStyle::BS_Allman;
7452   verifyFormat("void someLongFunction(\n"
7453                "    int someLongParameter) const\n"
7454                "{\n"
7455                "}",
7456                Style);
7457 
7458   Style.BreakBeforeBraces = FormatStyle::BS_Whitesmiths;
7459   verifyFormat("void someLongFunction(\n"
7460                "    int someLongParameter) const\n"
7461                "  {\n"
7462                "  }",
7463                Style);
7464 
7465   // Unless these are unknown annotations.
7466   verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n"
7467                "                  aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7468                "    LONG_AND_UGLY_ANNOTATION;");
7469 
7470   // Breaking before function-like trailing annotations is fine to keep them
7471   // close to their arguments.
7472   verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7473                "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
7474   verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
7475                "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
7476   verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
7477                "    LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}");
7478   verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n"
7479                      "    AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);");
7480   verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});");
7481 
7482   verifyFormat(
7483       "void aaaaaaaaaaaaaaaaaa()\n"
7484       "    __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n"
7485       "                   aaaaaaaaaaaaaaaaaaaaaaaaa));");
7486   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7487                "    __attribute__((unused));");
7488   verifyGoogleFormat(
7489       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7490       "    GUARDED_BY(aaaaaaaaaaaa);");
7491   verifyGoogleFormat(
7492       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7493       "    GUARDED_BY(aaaaaaaaaaaa);");
7494   verifyGoogleFormat(
7495       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n"
7496       "    aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7497   verifyGoogleFormat(
7498       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n"
7499       "    aaaaaaaaaaaaaaaaaaaaaaaaa;");
7500 }
7501 
7502 TEST_F(FormatTest, FunctionAnnotations) {
7503   verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n"
7504                "int OldFunction(const string &parameter) {}");
7505   verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n"
7506                "string OldFunction(const string &parameter) {}");
7507   verifyFormat("template <typename T>\n"
7508                "DEPRECATED(\"Use NewClass::NewFunction instead.\")\n"
7509                "string OldFunction(const string &parameter) {}");
7510 
7511   // Not function annotations.
7512   verifyFormat("ASSERT(\"aaaaa\") << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7513                "                << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb");
7514   verifyFormat("TEST_F(ThisIsATestFixtureeeeeeeeeeeee,\n"
7515                "       ThisIsATestWithAReallyReallyReallyReallyLongName) {}");
7516   verifyFormat("MACRO(abc).function() // wrap\n"
7517                "    << abc;");
7518   verifyFormat("MACRO(abc)->function() // wrap\n"
7519                "    << abc;");
7520   verifyFormat("MACRO(abc)::function() // wrap\n"
7521                "    << abc;");
7522 }
7523 
7524 TEST_F(FormatTest, BreaksDesireably) {
7525   verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
7526                "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
7527                "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}");
7528   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7529                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
7530                "}");
7531 
7532   verifyFormat(
7533       "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7534       "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
7535 
7536   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7537                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7538                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
7539 
7540   verifyFormat(
7541       "aaaaaaaa(aaaaaaaaaaaaa,\n"
7542       "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7543       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
7544       "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7545       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
7546 
7547   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
7548                "    (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7549 
7550   verifyFormat(
7551       "void f() {\n"
7552       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
7553       "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
7554       "}");
7555   verifyFormat(
7556       "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7557       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
7558   verifyFormat(
7559       "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7560       "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
7561   verifyFormat(
7562       "aaaaaa(aaa,\n"
7563       "       new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7564       "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
7565       "       aaaa);");
7566   verifyFormat("aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
7567                "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7568                "                  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7569 
7570   // Indent consistently independent of call expression and unary operator.
7571   verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
7572                "    dddddddddddddddddddddddddddddd));");
7573   verifyFormat("aaaaaaaaaaa(!bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
7574                "    dddddddddddddddddddddddddddddd));");
7575   verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n"
7576                "    dddddddddddddddddddddddddddddd));");
7577 
7578   // This test case breaks on an incorrect memoization, i.e. an optimization not
7579   // taking into account the StopAt value.
7580   verifyFormat(
7581       "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
7582       "       aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
7583       "       aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
7584       "       (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7585 
7586   verifyFormat("{\n  {\n    {\n"
7587                "      Annotation.SpaceRequiredBefore =\n"
7588                "          Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n"
7589                "          Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n"
7590                "    }\n  }\n}");
7591 
7592   // Break on an outer level if there was a break on an inner level.
7593   EXPECT_EQ("f(g(h(a, // comment\n"
7594             "      b, c),\n"
7595             "    d, e),\n"
7596             "  x, y);",
7597             format("f(g(h(a, // comment\n"
7598                    "    b, c), d, e), x, y);"));
7599 
7600   // Prefer breaking similar line breaks.
7601   verifyFormat(
7602       "const int kTrackingOptions = NSTrackingMouseMoved |\n"
7603       "                             NSTrackingMouseEnteredAndExited |\n"
7604       "                             NSTrackingActiveAlways;");
7605 }
7606 
7607 TEST_F(FormatTest, FormatsDeclarationsOnePerLine) {
7608   FormatStyle NoBinPacking = getGoogleStyle();
7609   NoBinPacking.BinPackParameters = false;
7610   NoBinPacking.BinPackArguments = true;
7611   verifyFormat("void f() {\n"
7612                "  f(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaa,\n"
7613                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
7614                "}",
7615                NoBinPacking);
7616   verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaa,\n"
7617                "       int aaaaaaaaaaaaaaaaaaaa,\n"
7618                "       int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
7619                NoBinPacking);
7620 
7621   NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
7622   verifyFormat("void aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7623                "                        vector<int> bbbbbbbbbbbbbbb);",
7624                NoBinPacking);
7625   // FIXME: This behavior difference is probably not wanted. However, currently
7626   // we cannot distinguish BreakBeforeParameter being set because of the wrapped
7627   // template arguments from BreakBeforeParameter being set because of the
7628   // one-per-line formatting.
7629   verifyFormat(
7630       "void fffffffffff(aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa,\n"
7631       "                                             aaaaaaaaaa> aaaaaaaaaa);",
7632       NoBinPacking);
7633   verifyFormat(
7634       "void fffffffffff(\n"
7635       "    aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaa>\n"
7636       "        aaaaaaaaaa);");
7637 }
7638 
7639 TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) {
7640   FormatStyle NoBinPacking = getGoogleStyle();
7641   NoBinPacking.BinPackParameters = false;
7642   NoBinPacking.BinPackArguments = false;
7643   verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n"
7644                "  aaaaaaaaaaaaaaaaaaaa,\n"
7645                "  aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);",
7646                NoBinPacking);
7647   verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n"
7648                "        aaaaaaaaaaaaa,\n"
7649                "        aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));",
7650                NoBinPacking);
7651   verifyFormat(
7652       "aaaaaaaa(aaaaaaaaaaaaa,\n"
7653       "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7654       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
7655       "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7656       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));",
7657       NoBinPacking);
7658   verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
7659                "    .aaaaaaaaaaaaaaaaaa();",
7660                NoBinPacking);
7661   verifyFormat("void f() {\n"
7662                "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7663                "      aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n"
7664                "}",
7665                NoBinPacking);
7666 
7667   verifyFormat(
7668       "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7669       "             aaaaaaaaaaaa,\n"
7670       "             aaaaaaaaaaaa);",
7671       NoBinPacking);
7672   verifyFormat(
7673       "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n"
7674       "                               ddddddddddddddddddddddddddddd),\n"
7675       "             test);",
7676       NoBinPacking);
7677 
7678   verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n"
7679                "            aaaaaaaaaaaaaaaaaaaaaaa,\n"
7680                "            aaaaaaaaaaaaaaaaaaaaaaa>\n"
7681                "    aaaaaaaaaaaaaaaaaa;",
7682                NoBinPacking);
7683   verifyFormat("a(\"a\"\n"
7684                "  \"a\",\n"
7685                "  a);");
7686 
7687   NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
7688   verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n"
7689                "                aaaaaaaaa,\n"
7690                "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
7691                NoBinPacking);
7692   verifyFormat(
7693       "void f() {\n"
7694       "  aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
7695       "      .aaaaaaa();\n"
7696       "}",
7697       NoBinPacking);
7698   verifyFormat(
7699       "template <class SomeType, class SomeOtherType>\n"
7700       "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}",
7701       NoBinPacking);
7702 }
7703 
7704 TEST_F(FormatTest, AdaptiveOnePerLineFormatting) {
7705   FormatStyle Style = getLLVMStyleWithColumns(15);
7706   Style.ExperimentalAutoDetectBinPacking = true;
7707   EXPECT_EQ("aaa(aaaa,\n"
7708             "    aaaa,\n"
7709             "    aaaa);\n"
7710             "aaa(aaaa,\n"
7711             "    aaaa,\n"
7712             "    aaaa);",
7713             format("aaa(aaaa,\n" // one-per-line
7714                    "  aaaa,\n"
7715                    "    aaaa  );\n"
7716                    "aaa(aaaa,  aaaa,  aaaa);", // inconclusive
7717                    Style));
7718   EXPECT_EQ("aaa(aaaa, aaaa,\n"
7719             "    aaaa);\n"
7720             "aaa(aaaa, aaaa,\n"
7721             "    aaaa);",
7722             format("aaa(aaaa,  aaaa,\n" // bin-packed
7723                    "    aaaa  );\n"
7724                    "aaa(aaaa,  aaaa,  aaaa);", // inconclusive
7725                    Style));
7726 }
7727 
7728 TEST_F(FormatTest, FormatsBuilderPattern) {
7729   verifyFormat("return llvm::StringSwitch<Reference::Kind>(name)\n"
7730                "    .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n"
7731                "    .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n"
7732                "    .StartsWith(\".init\", ORDER_INIT)\n"
7733                "    .StartsWith(\".fini\", ORDER_FINI)\n"
7734                "    .StartsWith(\".hash\", ORDER_HASH)\n"
7735                "    .Default(ORDER_TEXT);\n");
7736 
7737   verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n"
7738                "       aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();");
7739   verifyFormat("aaaaaaa->aaaaaaa\n"
7740                "    ->aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7741                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7742                "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
7743   verifyFormat(
7744       "aaaaaaa->aaaaaaa\n"
7745       "    ->aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7746       "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
7747   verifyFormat(
7748       "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n"
7749       "    aaaaaaaaaaaaaa);");
7750   verifyFormat(
7751       "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n"
7752       "    aaaaaa->aaaaaaaaaaaa()\n"
7753       "        ->aaaaaaaaaaaaaaaa(\n"
7754       "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7755       "        ->aaaaaaaaaaaaaaaaa();");
7756   verifyGoogleFormat(
7757       "void f() {\n"
7758       "  someo->Add((new util::filetools::Handler(dir))\n"
7759       "                 ->OnEvent1(NewPermanentCallback(\n"
7760       "                     this, &HandlerHolderClass::EventHandlerCBA))\n"
7761       "                 ->OnEvent2(NewPermanentCallback(\n"
7762       "                     this, &HandlerHolderClass::EventHandlerCBB))\n"
7763       "                 ->OnEvent3(NewPermanentCallback(\n"
7764       "                     this, &HandlerHolderClass::EventHandlerCBC))\n"
7765       "                 ->OnEvent5(NewPermanentCallback(\n"
7766       "                     this, &HandlerHolderClass::EventHandlerCBD))\n"
7767       "                 ->OnEvent6(NewPermanentCallback(\n"
7768       "                     this, &HandlerHolderClass::EventHandlerCBE)));\n"
7769       "}");
7770 
7771   verifyFormat(
7772       "aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();");
7773   verifyFormat("aaaaaaaaaaaaaaa()\n"
7774                "    .aaaaaaaaaaaaaaa()\n"
7775                "    .aaaaaaaaaaaaaaa()\n"
7776                "    .aaaaaaaaaaaaaaa()\n"
7777                "    .aaaaaaaaaaaaaaa();");
7778   verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
7779                "    .aaaaaaaaaaaaaaa()\n"
7780                "    .aaaaaaaaaaaaaaa()\n"
7781                "    .aaaaaaaaaaaaaaa();");
7782   verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
7783                "    .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
7784                "    .aaaaaaaaaaaaaaa();");
7785   verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n"
7786                "    ->aaaaaaaaaaaaaae(0)\n"
7787                "    ->aaaaaaaaaaaaaaa();");
7788 
7789   // Don't linewrap after very short segments.
7790   verifyFormat("a().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7791                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7792                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7793   verifyFormat("aa().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7794                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7795                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7796   verifyFormat("aaa()\n"
7797                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7798                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7799                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7800 
7801   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n"
7802                "    .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7803                "    .has<bbbbbbbbbbbbbbbbbbbbb>();");
7804   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n"
7805                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
7806                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();");
7807 
7808   // Prefer not to break after empty parentheses.
7809   verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n"
7810                "    First->LastNewlineOffset);");
7811 
7812   // Prefer not to create "hanging" indents.
7813   verifyFormat(
7814       "return !soooooooooooooome_map\n"
7815       "            .insert(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7816       "            .second;");
7817   verifyFormat(
7818       "return aaaaaaaaaaaaaaaa\n"
7819       "    .aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa)\n"
7820       "    .aaaa(aaaaaaaaaaaaaa);");
7821   // No hanging indent here.
7822   verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa.aaaaaaaaaaaaaaa(\n"
7823                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7824   verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa().aaaaaaaaaaaaaaa(\n"
7825                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7826   verifyFormat("aaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n"
7827                "    .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
7828                getLLVMStyleWithColumns(60));
7829   verifyFormat("aaaaaaaaaaaaaaaaaa\n"
7830                "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n"
7831                "    .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
7832                getLLVMStyleWithColumns(59));
7833   verifyFormat("aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7834                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7835                "    .aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7836 
7837   // Dont break if only closing statements before member call
7838   verifyFormat("test() {\n"
7839                "  ([]() -> {\n"
7840                "    int b = 32;\n"
7841                "    return 3;\n"
7842                "  }).foo();\n"
7843                "}");
7844   verifyFormat("test() {\n"
7845                "  (\n"
7846                "      []() -> {\n"
7847                "        int b = 32;\n"
7848                "        return 3;\n"
7849                "      },\n"
7850                "      foo, bar)\n"
7851                "      .foo();\n"
7852                "}");
7853   verifyFormat("test() {\n"
7854                "  ([]() -> {\n"
7855                "    int b = 32;\n"
7856                "    return 3;\n"
7857                "  })\n"
7858                "      .foo()\n"
7859                "      .bar();\n"
7860                "}");
7861   verifyFormat("test() {\n"
7862                "  ([]() -> {\n"
7863                "    int b = 32;\n"
7864                "    return 3;\n"
7865                "  })\n"
7866                "      .foo(\"aaaaaaaaaaaaaaaaa\"\n"
7867                "           \"bbbb\");\n"
7868                "}",
7869                getLLVMStyleWithColumns(30));
7870 }
7871 
7872 TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {
7873   verifyFormat(
7874       "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
7875       "    bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}");
7876   verifyFormat(
7877       "if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n"
7878       "    bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}");
7879 
7880   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
7881                "    ccccccccccccccccccccccccc) {\n}");
7882   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n"
7883                "    ccccccccccccccccccccccccc) {\n}");
7884 
7885   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
7886                "    ccccccccccccccccccccccccc) {\n}");
7887   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n"
7888                "    ccccccccccccccccccccccccc) {\n}");
7889 
7890   verifyFormat(
7891       "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n"
7892       "    ccccccccccccccccccccccccc) {\n}");
7893   verifyFormat(
7894       "if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n"
7895       "    ccccccccccccccccccccccccc) {\n}");
7896 
7897   verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n"
7898                "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n"
7899                "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n"
7900                "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
7901   verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n"
7902                "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n"
7903                "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n"
7904                "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
7905 
7906   verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n"
7907                "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n"
7908                "    aaaaaaaaaaaaaaa != aa) {\n}");
7909   verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n"
7910                "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n"
7911                "    aaaaaaaaaaaaaaa != aa) {\n}");
7912 }
7913 
7914 TEST_F(FormatTest, BreaksAfterAssignments) {
7915   verifyFormat(
7916       "unsigned Cost =\n"
7917       "    TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n"
7918       "                        SI->getPointerAddressSpaceee());\n");
7919   verifyFormat(
7920       "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n"
7921       "    Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());");
7922 
7923   verifyFormat(
7924       "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n"
7925       "    aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);");
7926   verifyFormat("unsigned OriginalStartColumn =\n"
7927                "    SourceMgr.getSpellingColumnNumber(\n"
7928                "        Current.FormatTok.getStartOfNonWhitespace()) -\n"
7929                "    1;");
7930 }
7931 
7932 TEST_F(FormatTest, ConfigurableBreakAssignmentPenalty) {
7933   FormatStyle Style = getLLVMStyle();
7934   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
7935                "    bbbbbbbbbbbbbbbbbbbbbbbbbb + cccccccccccccccccccccccccc;",
7936                Style);
7937 
7938   Style.PenaltyBreakAssignment = 20;
7939   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaa = bbbbbbbbbbbbbbbbbbbbbbbbbb +\n"
7940                "                                 cccccccccccccccccccccccccc;",
7941                Style);
7942 }
7943 
7944 TEST_F(FormatTest, AlignsAfterAssignments) {
7945   verifyFormat(
7946       "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
7947       "             aaaaaaaaaaaaaaaaaaaaaaaaa;");
7948   verifyFormat(
7949       "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
7950       "          aaaaaaaaaaaaaaaaaaaaaaaaa;");
7951   verifyFormat(
7952       "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
7953       "           aaaaaaaaaaaaaaaaaaaaaaaaa;");
7954   verifyFormat(
7955       "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
7956       "              aaaaaaaaaaaaaaaaaaaaaaaaa);");
7957   verifyFormat(
7958       "double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n"
7959       "                                            aaaaaaaaaaaaaaaaaaaaaaaa +\n"
7960       "                                            aaaaaaaaaaaaaaaaaaaaaaaa;");
7961 }
7962 
7963 TEST_F(FormatTest, AlignsAfterReturn) {
7964   verifyFormat(
7965       "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
7966       "       aaaaaaaaaaaaaaaaaaaaaaaaa;");
7967   verifyFormat(
7968       "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
7969       "        aaaaaaaaaaaaaaaaaaaaaaaaa);");
7970   verifyFormat(
7971       "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
7972       "       aaaaaaaaaaaaaaaaaaaaaa();");
7973   verifyFormat(
7974       "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
7975       "        aaaaaaaaaaaaaaaaaaaaaa());");
7976   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7977                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7978   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7979                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n"
7980                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7981   verifyFormat("return\n"
7982                "    // true if code is one of a or b.\n"
7983                "    code == a || code == b;");
7984 }
7985 
7986 TEST_F(FormatTest, AlignsAfterOpenBracket) {
7987   verifyFormat(
7988       "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n"
7989       "                                                aaaaaaaaa aaaaaaa) {}");
7990   verifyFormat(
7991       "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n"
7992       "                                               aaaaaaaaaaa aaaaaaaaa);");
7993   verifyFormat(
7994       "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n"
7995       "                                             aaaaaaaaaaaaaaaaaaaaa));");
7996   FormatStyle Style = getLLVMStyle();
7997   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
7998   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7999                "    aaaaaaaaaaa aaaaaaaa, aaaaaaaaa aaaaaaa) {}",
8000                Style);
8001   verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n"
8002                "    aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaa aaaaaaaaa);",
8003                Style);
8004   verifyFormat("SomeLongVariableName->someFunction(\n"
8005                "    foooooooo(aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa));",
8006                Style);
8007   verifyFormat(
8008       "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n"
8009       "    aaaaaaaaa aaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
8010       Style);
8011   verifyFormat(
8012       "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n"
8013       "    aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8014       Style);
8015   verifyFormat(
8016       "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n"
8017       "    aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));",
8018       Style);
8019 
8020   verifyFormat("bbbbbbbbbbbb(aaaaaaaaaaaaaaaaaaaaaaaa, //\n"
8021                "    ccccccc(aaaaaaaaaaaaaaaaa,         //\n"
8022                "        b));",
8023                Style);
8024 
8025   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
8026   Style.BinPackArguments = false;
8027   Style.BinPackParameters = false;
8028   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8029                "    aaaaaaaaaaa aaaaaaaa,\n"
8030                "    aaaaaaaaa aaaaaaa,\n"
8031                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
8032                Style);
8033   verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n"
8034                "    aaaaaaaaaaa aaaaaaaaa,\n"
8035                "    aaaaaaaaaaa aaaaaaaaa,\n"
8036                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8037                Style);
8038   verifyFormat("SomeLongVariableName->someFunction(foooooooo(\n"
8039                "    aaaaaaaaaaaaaaa,\n"
8040                "    aaaaaaaaaaaaaaaaaaaaa,\n"
8041                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));",
8042                Style);
8043   verifyFormat(
8044       "aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa(\n"
8045       "    aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)));",
8046       Style);
8047   verifyFormat(
8048       "aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaa.aaaaaaaaaa(\n"
8049       "    aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)));",
8050       Style);
8051   verifyFormat(
8052       "aaaaaaaaaaaaaaaaaaaaaaaa(\n"
8053       "    aaaaaaaaaaaaaaaaaaaaa(\n"
8054       "        aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)),\n"
8055       "    aaaaaaaaaaaaaaaa);",
8056       Style);
8057   verifyFormat(
8058       "aaaaaaaaaaaaaaaaaaaaaaaa(\n"
8059       "    aaaaaaaaaaaaaaaaaaaaa(\n"
8060       "        aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)) &&\n"
8061       "    aaaaaaaaaaaaaaaa);",
8062       Style);
8063 }
8064 
8065 TEST_F(FormatTest, ParenthesesAndOperandAlignment) {
8066   FormatStyle Style = getLLVMStyleWithColumns(40);
8067   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
8068                "          bbbbbbbbbbbbbbbbbbbbbb);",
8069                Style);
8070   Style.AlignAfterOpenBracket = FormatStyle::BAS_Align;
8071   Style.AlignOperands = FormatStyle::OAS_DontAlign;
8072   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
8073                "          bbbbbbbbbbbbbbbbbbbbbb);",
8074                Style);
8075   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
8076   Style.AlignOperands = FormatStyle::OAS_Align;
8077   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
8078                "          bbbbbbbbbbbbbbbbbbbbbb);",
8079                Style);
8080   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
8081   Style.AlignOperands = FormatStyle::OAS_DontAlign;
8082   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
8083                "    bbbbbbbbbbbbbbbbbbbbbb);",
8084                Style);
8085 }
8086 
8087 TEST_F(FormatTest, BreaksConditionalExpressions) {
8088   verifyFormat(
8089       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8090       "                               ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8091       "                               : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8092   verifyFormat(
8093       "aaaa(aaaaaaaaaa, aaaaaaaa,\n"
8094       "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8095       "                                : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8096   verifyFormat(
8097       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8098       "                                   : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8099   verifyFormat("aaaa(aaaaaaaaa, aaaaaaaaa,\n"
8100                "     aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8101                "             : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8102   verifyFormat(
8103       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n"
8104       "                                                    : aaaaaaaaaaaaa);");
8105   verifyFormat(
8106       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8107       "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8108       "                                    : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8109       "                   aaaaaaaaaaaaa);");
8110   verifyFormat(
8111       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8112       "                   aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8113       "                   aaaaaaaaaaaaa);");
8114   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8115                "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8116                "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
8117                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8118                "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8119   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8120                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8121                "           ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8122                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
8123                "           : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8124                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
8125                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8126   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8127                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8128                "           ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8129                "                  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
8130                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8131   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8132                "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8133                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaa;");
8134   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
8135                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8136                "        ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8137                "        : aaaaaaaaaaaaaaaa;");
8138   verifyFormat(
8139       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8140       "    ? aaaaaaaaaaaaaaa\n"
8141       "    : aaaaaaaaaaaaaaa;");
8142   verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
8143                "          aaaaaaaaa\n"
8144                "      ? b\n"
8145                "      : c);");
8146   verifyFormat("return aaaa == bbbb\n"
8147                "           // comment\n"
8148                "           ? aaaa\n"
8149                "           : bbbb;");
8150   verifyFormat("unsigned Indent =\n"
8151                "    format(TheLine.First,\n"
8152                "           IndentForLevel[TheLine.Level] >= 0\n"
8153                "               ? IndentForLevel[TheLine.Level]\n"
8154                "               : TheLine * 2,\n"
8155                "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
8156                getLLVMStyleWithColumns(60));
8157   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
8158                "                  ? aaaaaaaaaaaaaaa\n"
8159                "                  : bbbbbbbbbbbbbbb //\n"
8160                "                        ? ccccccccccccccc\n"
8161                "                        : ddddddddddddddd;");
8162   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
8163                "                  ? aaaaaaaaaaaaaaa\n"
8164                "                  : (bbbbbbbbbbbbbbb //\n"
8165                "                         ? ccccccccccccccc\n"
8166                "                         : ddddddddddddddd);");
8167   verifyFormat(
8168       "int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8169       "                                      ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
8170       "                                            aaaaaaaaaaaaaaaaaaaaa +\n"
8171       "                                            aaaaaaaaaaaaaaaaaaaaa\n"
8172       "                                      : aaaaaaaaaa;");
8173   verifyFormat(
8174       "aaaaaa = aaaaaaaaaaaa ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8175       "                                   : aaaaaaaaaaaaaaaaaaaaaa\n"
8176       "                      : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
8177 
8178   FormatStyle NoBinPacking = getLLVMStyle();
8179   NoBinPacking.BinPackArguments = false;
8180   verifyFormat(
8181       "void f() {\n"
8182       "  g(aaa,\n"
8183       "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
8184       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8185       "        ? aaaaaaaaaaaaaaa\n"
8186       "        : aaaaaaaaaaaaaaa);\n"
8187       "}",
8188       NoBinPacking);
8189   verifyFormat(
8190       "void f() {\n"
8191       "  g(aaa,\n"
8192       "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
8193       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8194       "        ?: aaaaaaaaaaaaaaa);\n"
8195       "}",
8196       NoBinPacking);
8197 
8198   verifyFormat("SomeFunction(aaaaaaaaaaaaaaaaa,\n"
8199                "             // comment.\n"
8200                "             ccccccccccccccccccccccccccccccccccccccc\n"
8201                "                 ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8202                "                 : bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);");
8203 
8204   // Assignments in conditional expressions. Apparently not uncommon :-(.
8205   verifyFormat("return a != b\n"
8206                "           // comment\n"
8207                "           ? a = b\n"
8208                "           : a = b;");
8209   verifyFormat("return a != b\n"
8210                "           // comment\n"
8211                "           ? a = a != b\n"
8212                "                     // comment\n"
8213                "                     ? a = b\n"
8214                "                     : a\n"
8215                "           : a;\n");
8216   verifyFormat("return a != b\n"
8217                "           // comment\n"
8218                "           ? a\n"
8219                "           : a = a != b\n"
8220                "                     // comment\n"
8221                "                     ? a = b\n"
8222                "                     : a;");
8223 
8224   // Chained conditionals
8225   FormatStyle Style = getLLVMStyleWithColumns(70);
8226   Style.AlignOperands = FormatStyle::OAS_Align;
8227   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
8228                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8229                "                        : 3333333333333333;",
8230                Style);
8231   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
8232                "       : bbbbbbbbbb     ? 2222222222222222\n"
8233                "                        : 3333333333333333;",
8234                Style);
8235   verifyFormat("return aaaaaaaaaa         ? 1111111111111111\n"
8236                "       : bbbbbbbbbbbbbbbb ? 2222222222222222\n"
8237                "                          : 3333333333333333;",
8238                Style);
8239   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
8240                "       : bbbbbbbbbbbbbb ? 222222\n"
8241                "                        : 333333;",
8242                Style);
8243   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
8244                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8245                "       : cccccccccccccc ? 3333333333333333\n"
8246                "                        : 4444444444444444;",
8247                Style);
8248   verifyFormat("return aaaaaaaaaaaaaaaa ? (aaa ? bbb : ccc)\n"
8249                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8250                "                        : 3333333333333333;",
8251                Style);
8252   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
8253                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8254                "                        : (aaa ? bbb : ccc);",
8255                Style);
8256   verifyFormat(
8257       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8258       "                                             : cccccccccccccccccc)\n"
8259       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8260       "                        : 3333333333333333;",
8261       Style);
8262   verifyFormat(
8263       "return aaaaaaaaa        ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8264       "                                             : cccccccccccccccccc)\n"
8265       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8266       "                        : 3333333333333333;",
8267       Style);
8268   verifyFormat(
8269       "return aaaaaaaaa        ? a = (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8270       "                                             : dddddddddddddddddd)\n"
8271       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8272       "                        : 3333333333333333;",
8273       Style);
8274   verifyFormat(
8275       "return aaaaaaaaa        ? a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8276       "                                             : dddddddddddddddddd)\n"
8277       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8278       "                        : 3333333333333333;",
8279       Style);
8280   verifyFormat(
8281       "return aaaaaaaaa        ? 1111111111111111\n"
8282       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8283       "                        : a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8284       "                                             : dddddddddddddddddd)\n",
8285       Style);
8286   verifyFormat(
8287       "return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
8288       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8289       "                        : (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8290       "                                             : cccccccccccccccccc);",
8291       Style);
8292   verifyFormat(
8293       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8294       "                           : ccccccccccccccc ? dddddddddddddddddd\n"
8295       "                                             : eeeeeeeeeeeeeeeeee)\n"
8296       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8297       "                        : 3333333333333333;",
8298       Style);
8299   verifyFormat(
8300       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaa    ? bbbbbbbbbbbbbbbbbb\n"
8301       "                           : ccccccccccccccc ? dddddddddddddddddd\n"
8302       "                                             : eeeeeeeeeeeeeeeeee)\n"
8303       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8304       "                        : 3333333333333333;",
8305       Style);
8306   verifyFormat(
8307       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8308       "                           : cccccccccccc    ? dddddddddddddddddd\n"
8309       "                                             : eeeeeeeeeeeeeeeeee)\n"
8310       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8311       "                        : 3333333333333333;",
8312       Style);
8313   verifyFormat(
8314       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8315       "                                             : cccccccccccccccccc\n"
8316       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8317       "                        : 3333333333333333;",
8318       Style);
8319   verifyFormat(
8320       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8321       "                          : cccccccccccccccc ? dddddddddddddddddd\n"
8322       "                                             : eeeeeeeeeeeeeeeeee\n"
8323       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
8324       "                        : 3333333333333333;",
8325       Style);
8326   verifyFormat("return aaaaaaaaaaaaaaaaaaaaa\n"
8327                "           ? (aaaaaaaaaaaaaaaaaa   ? bbbbbbbbbbbbbbbbbb\n"
8328                "              : cccccccccccccccccc ? dddddddddddddddddd\n"
8329                "                                   : eeeeeeeeeeeeeeeeee)\n"
8330                "       : bbbbbbbbbbbbbbbbbbb ? 2222222222222222\n"
8331                "                             : 3333333333333333;",
8332                Style);
8333   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaa\n"
8334                "           ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
8335                "             : cccccccccccccccc ? dddddddddddddddddd\n"
8336                "                                : eeeeeeeeeeeeeeeeee\n"
8337                "       : bbbbbbbbbbbbbbbbbbbbbbb ? 2222222222222222\n"
8338                "                                 : 3333333333333333;",
8339                Style);
8340 
8341   Style.AlignOperands = FormatStyle::OAS_DontAlign;
8342   Style.BreakBeforeTernaryOperators = false;
8343   // FIXME: Aligning the question marks is weird given DontAlign.
8344   // Consider disabling this alignment in this case. Also check whether this
8345   // will render the adjustment from https://reviews.llvm.org/D82199
8346   // unnecessary.
8347   verifyFormat("int x = aaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa :\n"
8348                "    bbbb                ? cccccccccccccccccc :\n"
8349                "                          ddddd;\n",
8350                Style);
8351 
8352   EXPECT_EQ(
8353       "MMMMMMMMMMMMMMMMMMMMMMMMMMM = A ?\n"
8354       "    /*\n"
8355       "     */\n"
8356       "    function() {\n"
8357       "      try {\n"
8358       "        return JJJJJJJJJJJJJJ(\n"
8359       "            pppppppppppppppppppppppppppppppppppppppppppppppppp);\n"
8360       "      }\n"
8361       "    } :\n"
8362       "    function() {};",
8363       format(
8364           "MMMMMMMMMMMMMMMMMMMMMMMMMMM = A ?\n"
8365           "     /*\n"
8366           "      */\n"
8367           "     function() {\n"
8368           "      try {\n"
8369           "        return JJJJJJJJJJJJJJ(\n"
8370           "            pppppppppppppppppppppppppppppppppppppppppppppppppp);\n"
8371           "      }\n"
8372           "    } :\n"
8373           "    function() {};",
8374           getGoogleStyle(FormatStyle::LK_JavaScript)));
8375 }
8376 
8377 TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) {
8378   FormatStyle Style = getLLVMStyleWithColumns(70);
8379   Style.BreakBeforeTernaryOperators = false;
8380   verifyFormat(
8381       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8382       "                               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
8383       "                               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8384       Style);
8385   verifyFormat(
8386       "aaaa(aaaaaaaaaa, aaaaaaaa,\n"
8387       "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
8388       "                                  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8389       Style);
8390   verifyFormat(
8391       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
8392       "                                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8393       Style);
8394   verifyFormat("aaaa(aaaaaaaa, aaaaaaaaaa,\n"
8395                "     aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
8396                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8397                Style);
8398   verifyFormat(
8399       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n"
8400       "                                                      aaaaaaaaaaaaa);",
8401       Style);
8402   verifyFormat(
8403       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8404       "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
8405       "                                      aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8406       "                   aaaaaaaaaaaaa);",
8407       Style);
8408   verifyFormat(
8409       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8410       "                   aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8411       "                   aaaaaaaaaaaaa);",
8412       Style);
8413   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8414                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8415                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
8416                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8417                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8418                Style);
8419   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8420                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8421                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8422                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
8423                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8424                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
8425                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8426                Style);
8427   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8428                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n"
8429                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8430                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
8431                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);",
8432                Style);
8433   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8434                "    aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
8435                "    aaaaaaaaaaaaaaaaaaaaaaaaaaa;",
8436                Style);
8437   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
8438                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8439                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
8440                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
8441                Style);
8442   verifyFormat(
8443       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8444       "    aaaaaaaaaaaaaaa :\n"
8445       "    aaaaaaaaaaaaaaa;",
8446       Style);
8447   verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
8448                "          aaaaaaaaa ?\n"
8449                "      b :\n"
8450                "      c);",
8451                Style);
8452   verifyFormat("unsigned Indent =\n"
8453                "    format(TheLine.First,\n"
8454                "           IndentForLevel[TheLine.Level] >= 0 ?\n"
8455                "               IndentForLevel[TheLine.Level] :\n"
8456                "               TheLine * 2,\n"
8457                "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
8458                Style);
8459   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n"
8460                "                  aaaaaaaaaaaaaaa :\n"
8461                "                  bbbbbbbbbbbbbbb ? //\n"
8462                "                      ccccccccccccccc :\n"
8463                "                      ddddddddddddddd;",
8464                Style);
8465   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n"
8466                "                  aaaaaaaaaaaaaaa :\n"
8467                "                  (bbbbbbbbbbbbbbb ? //\n"
8468                "                       ccccccccccccccc :\n"
8469                "                       ddddddddddddddd);",
8470                Style);
8471   verifyFormat("int i = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8472                "            /*bbbbbbbbbbbbbbb=*/bbbbbbbbbbbbbbbbbbbbbbbbb :\n"
8473                "            ccccccccccccccccccccccccccc;",
8474                Style);
8475   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
8476                "           aaaaa :\n"
8477                "           bbbbbbbbbbbbbbb + cccccccccccccccc;",
8478                Style);
8479 
8480   // Chained conditionals
8481   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
8482                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8483                "                          3333333333333333;",
8484                Style);
8485   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
8486                "       bbbbbbbbbb       ? 2222222222222222 :\n"
8487                "                          3333333333333333;",
8488                Style);
8489   verifyFormat("return aaaaaaaaaa       ? 1111111111111111 :\n"
8490                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8491                "                          3333333333333333;",
8492                Style);
8493   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
8494                "       bbbbbbbbbbbbbbbb ? 222222 :\n"
8495                "                          333333;",
8496                Style);
8497   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
8498                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8499                "       cccccccccccccccc ? 3333333333333333 :\n"
8500                "                          4444444444444444;",
8501                Style);
8502   verifyFormat("return aaaaaaaaaaaaaaaa ? (aaa ? bbb : ccc) :\n"
8503                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8504                "                          3333333333333333;",
8505                Style);
8506   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
8507                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8508                "                          (aaa ? bbb : ccc);",
8509                Style);
8510   verifyFormat(
8511       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8512       "                                               cccccccccccccccccc) :\n"
8513       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8514       "                          3333333333333333;",
8515       Style);
8516   verifyFormat(
8517       "return aaaaaaaaa        ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8518       "                                               cccccccccccccccccc) :\n"
8519       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8520       "                          3333333333333333;",
8521       Style);
8522   verifyFormat(
8523       "return aaaaaaaaa        ? a = (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8524       "                                               dddddddddddddddddd) :\n"
8525       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8526       "                          3333333333333333;",
8527       Style);
8528   verifyFormat(
8529       "return aaaaaaaaa        ? a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8530       "                                               dddddddddddddddddd) :\n"
8531       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8532       "                          3333333333333333;",
8533       Style);
8534   verifyFormat(
8535       "return aaaaaaaaa        ? 1111111111111111 :\n"
8536       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8537       "                          a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8538       "                                               dddddddddddddddddd)\n",
8539       Style);
8540   verifyFormat(
8541       "return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
8542       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8543       "                          (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8544       "                                               cccccccccccccccccc);",
8545       Style);
8546   verifyFormat(
8547       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8548       "                           ccccccccccccccccc ? dddddddddddddddddd :\n"
8549       "                                               eeeeeeeeeeeeeeeeee) :\n"
8550       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8551       "                          3333333333333333;",
8552       Style);
8553   verifyFormat(
8554       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8555       "                           ccccccccccccc     ? dddddddddddddddddd :\n"
8556       "                                               eeeeeeeeeeeeeeeeee) :\n"
8557       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8558       "                          3333333333333333;",
8559       Style);
8560   verifyFormat(
8561       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaa     ? bbbbbbbbbbbbbbbbbb :\n"
8562       "                           ccccccccccccccccc ? dddddddddddddddddd :\n"
8563       "                                               eeeeeeeeeeeeeeeeee) :\n"
8564       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8565       "                          3333333333333333;",
8566       Style);
8567   verifyFormat(
8568       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8569       "                                               cccccccccccccccccc :\n"
8570       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8571       "                          3333333333333333;",
8572       Style);
8573   verifyFormat(
8574       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8575       "                          cccccccccccccccccc ? dddddddddddddddddd :\n"
8576       "                                               eeeeeeeeeeeeeeeeee :\n"
8577       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8578       "                          3333333333333333;",
8579       Style);
8580   verifyFormat("return aaaaaaaaaaaaaaaaaaaaa ?\n"
8581                "           (aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8582                "            cccccccccccccccccc ? dddddddddddddddddd :\n"
8583                "                                 eeeeeeeeeeeeeeeeee) :\n"
8584                "       bbbbbbbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8585                "                               3333333333333333;",
8586                Style);
8587   verifyFormat("return aaaaaaaaaaaaaaaaaaaaa ?\n"
8588                "           aaaaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
8589                "           cccccccccccccccccccc ? dddddddddddddddddd :\n"
8590                "                                  eeeeeeeeeeeeeeeeee :\n"
8591                "       bbbbbbbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
8592                "                               3333333333333333;",
8593                Style);
8594 }
8595 
8596 TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
8597   verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n"
8598                "     aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();");
8599   verifyFormat("bool a = true, b = false;");
8600 
8601   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n"
8602                "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n"
8603                "     bbbbbbbbbbbbbbbbbbbbbbbbb =\n"
8604                "         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);");
8605   verifyFormat(
8606       "bool aaaaaaaaaaaaaaaaaaaaa =\n"
8607       "         bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n"
8608       "     d = e && f;");
8609   verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n"
8610                "          c = cccccccccccccccccccc, d = dddddddddddddddddddd;");
8611   verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
8612                "          *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;");
8613   verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n"
8614                "          ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;");
8615 
8616   FormatStyle Style = getGoogleStyle();
8617   Style.PointerAlignment = FormatStyle::PAS_Left;
8618   Style.DerivePointerAlignment = false;
8619   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8620                "    *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n"
8621                "    *b = bbbbbbbbbbbbbbbbbbb;",
8622                Style);
8623   verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
8624                "          *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;",
8625                Style);
8626   verifyFormat("vector<int*> a, b;", Style);
8627   verifyFormat("for (int *p, *q; p != q; p = p->next) {\n}", Style);
8628   verifyFormat("/*comment*/ for (int *p, *q; p != q; p = p->next) {\n}", Style);
8629   verifyFormat("if (int *p, *q; p != q) {\n  p = p->next;\n}", Style);
8630   verifyFormat("/*comment*/ if (int *p, *q; p != q) {\n  p = p->next;\n}",
8631                Style);
8632   verifyFormat("switch (int *p, *q; p != q) {\n  default:\n    break;\n}",
8633                Style);
8634   verifyFormat(
8635       "/*comment*/ switch (int *p, *q; p != q) {\n  default:\n    break;\n}",
8636       Style);
8637 
8638   verifyFormat("if ([](int* p, int* q) {}()) {\n}", Style);
8639   verifyFormat("for ([](int* p, int* q) {}();;) {\n}", Style);
8640   verifyFormat("for (; [](int* p, int* q) {}();) {\n}", Style);
8641   verifyFormat("for (;; [](int* p, int* q) {}()) {\n}", Style);
8642   verifyFormat("switch ([](int* p, int* q) {}()) {\n  default:\n    break;\n}",
8643                Style);
8644 }
8645 
8646 TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
8647   verifyFormat("arr[foo ? bar : baz];");
8648   verifyFormat("f()[foo ? bar : baz];");
8649   verifyFormat("(a + b)[foo ? bar : baz];");
8650   verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
8651 }
8652 
8653 TEST_F(FormatTest, AlignsStringLiterals) {
8654   verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
8655                "                                      \"short literal\");");
8656   verifyFormat(
8657       "looooooooooooooooooooooooongFunction(\n"
8658       "    \"short literal\"\n"
8659       "    \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
8660   verifyFormat("someFunction(\"Always break between multi-line\"\n"
8661                "             \" string literals\",\n"
8662                "             and, other, parameters);");
8663   EXPECT_EQ("fun + \"1243\" /* comment */\n"
8664             "      \"5678\";",
8665             format("fun + \"1243\" /* comment */\n"
8666                    "    \"5678\";",
8667                    getLLVMStyleWithColumns(28)));
8668   EXPECT_EQ(
8669       "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
8670       "         \"aaaaaaaaaaaaaaaaaaaaa\"\n"
8671       "         \"aaaaaaaaaaaaaaaa\";",
8672       format("aaaaaa ="
8673              "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa "
8674              "aaaaaaaaaaaaaaaaaaaaa\" "
8675              "\"aaaaaaaaaaaaaaaa\";"));
8676   verifyFormat("a = a + \"a\"\n"
8677                "        \"a\"\n"
8678                "        \"a\";");
8679   verifyFormat("f(\"a\", \"b\"\n"
8680                "       \"c\");");
8681 
8682   verifyFormat(
8683       "#define LL_FORMAT \"ll\"\n"
8684       "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n"
8685       "       \"d, ddddddddd: %\" LL_FORMAT \"d\");");
8686 
8687   verifyFormat("#define A(X)          \\\n"
8688                "  \"aaaaa\" #X \"bbbbbb\" \\\n"
8689                "  \"ccccc\"",
8690                getLLVMStyleWithColumns(23));
8691   verifyFormat("#define A \"def\"\n"
8692                "f(\"abc\" A \"ghi\"\n"
8693                "  \"jkl\");");
8694 
8695   verifyFormat("f(L\"a\"\n"
8696                "  L\"b\");");
8697   verifyFormat("#define A(X)            \\\n"
8698                "  L\"aaaaa\" #X L\"bbbbbb\" \\\n"
8699                "  L\"ccccc\"",
8700                getLLVMStyleWithColumns(25));
8701 
8702   verifyFormat("f(@\"a\"\n"
8703                "  @\"b\");");
8704   verifyFormat("NSString s = @\"a\"\n"
8705                "             @\"b\"\n"
8706                "             @\"c\";");
8707   verifyFormat("NSString s = @\"a\"\n"
8708                "              \"b\"\n"
8709                "              \"c\";");
8710 }
8711 
8712 TEST_F(FormatTest, ReturnTypeBreakingStyle) {
8713   FormatStyle Style = getLLVMStyle();
8714   // No declarations or definitions should be moved to own line.
8715   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_None;
8716   verifyFormat("class A {\n"
8717                "  int f() { return 1; }\n"
8718                "  int g();\n"
8719                "};\n"
8720                "int f() { return 1; }\n"
8721                "int g();\n",
8722                Style);
8723 
8724   // All declarations and definitions should have the return type moved to its
8725   // own line.
8726   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
8727   Style.TypenameMacros = {"LIST"};
8728   verifyFormat("SomeType\n"
8729                "funcdecl(LIST(uint64_t));",
8730                Style);
8731   verifyFormat("class E {\n"
8732                "  int\n"
8733                "  f() {\n"
8734                "    return 1;\n"
8735                "  }\n"
8736                "  int\n"
8737                "  g();\n"
8738                "};\n"
8739                "int\n"
8740                "f() {\n"
8741                "  return 1;\n"
8742                "}\n"
8743                "int\n"
8744                "g();\n",
8745                Style);
8746 
8747   // Top-level definitions, and no kinds of declarations should have the
8748   // return type moved to its own line.
8749   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevelDefinitions;
8750   verifyFormat("class B {\n"
8751                "  int f() { return 1; }\n"
8752                "  int g();\n"
8753                "};\n"
8754                "int\n"
8755                "f() {\n"
8756                "  return 1;\n"
8757                "}\n"
8758                "int g();\n",
8759                Style);
8760 
8761   // Top-level definitions and declarations should have the return type moved
8762   // to its own line.
8763   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevel;
8764   verifyFormat("class C {\n"
8765                "  int f() { return 1; }\n"
8766                "  int g();\n"
8767                "};\n"
8768                "int\n"
8769                "f() {\n"
8770                "  return 1;\n"
8771                "}\n"
8772                "int\n"
8773                "g();\n",
8774                Style);
8775 
8776   // All definitions should have the return type moved to its own line, but no
8777   // kinds of declarations.
8778   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_AllDefinitions;
8779   verifyFormat("class D {\n"
8780                "  int\n"
8781                "  f() {\n"
8782                "    return 1;\n"
8783                "  }\n"
8784                "  int g();\n"
8785                "};\n"
8786                "int\n"
8787                "f() {\n"
8788                "  return 1;\n"
8789                "}\n"
8790                "int g();\n",
8791                Style);
8792   verifyFormat("const char *\n"
8793                "f(void) {\n" // Break here.
8794                "  return \"\";\n"
8795                "}\n"
8796                "const char *bar(void);\n", // No break here.
8797                Style);
8798   verifyFormat("template <class T>\n"
8799                "T *\n"
8800                "f(T &c) {\n" // Break here.
8801                "  return NULL;\n"
8802                "}\n"
8803                "template <class T> T *f(T &c);\n", // No break here.
8804                Style);
8805   verifyFormat("class C {\n"
8806                "  int\n"
8807                "  operator+() {\n"
8808                "    return 1;\n"
8809                "  }\n"
8810                "  int\n"
8811                "  operator()() {\n"
8812                "    return 1;\n"
8813                "  }\n"
8814                "};\n",
8815                Style);
8816   verifyFormat("void\n"
8817                "A::operator()() {}\n"
8818                "void\n"
8819                "A::operator>>() {}\n"
8820                "void\n"
8821                "A::operator+() {}\n"
8822                "void\n"
8823                "A::operator*() {}\n"
8824                "void\n"
8825                "A::operator->() {}\n"
8826                "void\n"
8827                "A::operator void *() {}\n"
8828                "void\n"
8829                "A::operator void &() {}\n"
8830                "void\n"
8831                "A::operator void &&() {}\n"
8832                "void\n"
8833                "A::operator char *() {}\n"
8834                "void\n"
8835                "A::operator[]() {}\n"
8836                "void\n"
8837                "A::operator!() {}\n"
8838                "void\n"
8839                "A::operator**() {}\n"
8840                "void\n"
8841                "A::operator<Foo> *() {}\n"
8842                "void\n"
8843                "A::operator<Foo> **() {}\n"
8844                "void\n"
8845                "A::operator<Foo> &() {}\n"
8846                "void\n"
8847                "A::operator void **() {}\n",
8848                Style);
8849   verifyFormat("constexpr auto\n"
8850                "operator()() const -> reference {}\n"
8851                "constexpr auto\n"
8852                "operator>>() const -> reference {}\n"
8853                "constexpr auto\n"
8854                "operator+() const -> reference {}\n"
8855                "constexpr auto\n"
8856                "operator*() const -> reference {}\n"
8857                "constexpr auto\n"
8858                "operator->() const -> reference {}\n"
8859                "constexpr auto\n"
8860                "operator++() const -> reference {}\n"
8861                "constexpr auto\n"
8862                "operator void *() const -> reference {}\n"
8863                "constexpr auto\n"
8864                "operator void **() const -> reference {}\n"
8865                "constexpr auto\n"
8866                "operator void *() const -> reference {}\n"
8867                "constexpr auto\n"
8868                "operator void &() const -> reference {}\n"
8869                "constexpr auto\n"
8870                "operator void &&() const -> reference {}\n"
8871                "constexpr auto\n"
8872                "operator char *() const -> reference {}\n"
8873                "constexpr auto\n"
8874                "operator!() const -> reference {}\n"
8875                "constexpr auto\n"
8876                "operator[]() const -> reference {}\n",
8877                Style);
8878   verifyFormat("void *operator new(std::size_t s);", // No break here.
8879                Style);
8880   verifyFormat("void *\n"
8881                "operator new(std::size_t s) {}",
8882                Style);
8883   verifyFormat("void *\n"
8884                "operator delete[](void *ptr) {}",
8885                Style);
8886   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
8887   verifyFormat("const char *\n"
8888                "f(void)\n" // Break here.
8889                "{\n"
8890                "  return \"\";\n"
8891                "}\n"
8892                "const char *bar(void);\n", // No break here.
8893                Style);
8894   verifyFormat("template <class T>\n"
8895                "T *\n"     // Problem here: no line break
8896                "f(T &c)\n" // Break here.
8897                "{\n"
8898                "  return NULL;\n"
8899                "}\n"
8900                "template <class T> T *f(T &c);\n", // No break here.
8901                Style);
8902   verifyFormat("int\n"
8903                "foo(A<bool> a)\n"
8904                "{\n"
8905                "  return a;\n"
8906                "}\n",
8907                Style);
8908   verifyFormat("int\n"
8909                "foo(A<8> a)\n"
8910                "{\n"
8911                "  return a;\n"
8912                "}\n",
8913                Style);
8914   verifyFormat("int\n"
8915                "foo(A<B<bool>, 8> a)\n"
8916                "{\n"
8917                "  return a;\n"
8918                "}\n",
8919                Style);
8920   verifyFormat("int\n"
8921                "foo(A<B<8>, bool> a)\n"
8922                "{\n"
8923                "  return a;\n"
8924                "}\n",
8925                Style);
8926   verifyFormat("int\n"
8927                "foo(A<B<bool>, bool> a)\n"
8928                "{\n"
8929                "  return a;\n"
8930                "}\n",
8931                Style);
8932   verifyFormat("int\n"
8933                "foo(A<B<8>, 8> a)\n"
8934                "{\n"
8935                "  return a;\n"
8936                "}\n",
8937                Style);
8938 
8939   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
8940   Style.BraceWrapping.AfterFunction = true;
8941   verifyFormat("int f(i);\n" // No break here.
8942                "int\n"       // Break here.
8943                "f(i)\n"
8944                "{\n"
8945                "  return i + 1;\n"
8946                "}\n"
8947                "int\n" // Break here.
8948                "f(i)\n"
8949                "{\n"
8950                "  return i + 1;\n"
8951                "};",
8952                Style);
8953   verifyFormat("int f(a, b, c);\n" // No break here.
8954                "int\n"             // Break here.
8955                "f(a, b, c)\n"      // Break here.
8956                "short a, b;\n"
8957                "float c;\n"
8958                "{\n"
8959                "  return a + b < c;\n"
8960                "}\n"
8961                "int\n"        // Break here.
8962                "f(a, b, c)\n" // Break here.
8963                "short a, b;\n"
8964                "float c;\n"
8965                "{\n"
8966                "  return a + b < c;\n"
8967                "};",
8968                Style);
8969   verifyFormat("byte *\n" // Break here.
8970                "f(a)\n"   // Break here.
8971                "byte a[];\n"
8972                "{\n"
8973                "  return a;\n"
8974                "}",
8975                Style);
8976   verifyFormat("bool f(int a, int) override;\n"
8977                "Bar g(int a, Bar) final;\n"
8978                "Bar h(a, Bar) final;",
8979                Style);
8980   verifyFormat("int\n"
8981                "f(a)",
8982                Style);
8983   verifyFormat("bool\n"
8984                "f(size_t = 0, bool b = false)\n"
8985                "{\n"
8986                "  return !b;\n"
8987                "}",
8988                Style);
8989 
8990   // The return breaking style doesn't affect:
8991   // * function and object definitions with attribute-like macros
8992   verifyFormat("Tttttttttttttttttttttttt ppppppppppppppp\n"
8993                "    ABSL_GUARDED_BY(mutex) = {};",
8994                getGoogleStyleWithColumns(40));
8995   verifyFormat("Tttttttttttttttttttttttt ppppppppppppppp\n"
8996                "    ABSL_GUARDED_BY(mutex);  // comment",
8997                getGoogleStyleWithColumns(40));
8998   verifyFormat("Tttttttttttttttttttttttt ppppppppppppppp\n"
8999                "    ABSL_GUARDED_BY(mutex1)\n"
9000                "        ABSL_GUARDED_BY(mutex2);",
9001                getGoogleStyleWithColumns(40));
9002   verifyFormat("Tttttt f(int a, int b)\n"
9003                "    ABSL_GUARDED_BY(mutex1)\n"
9004                "        ABSL_GUARDED_BY(mutex2);",
9005                getGoogleStyleWithColumns(40));
9006   // * typedefs
9007   verifyFormat("typedef ATTR(X) char x;", getGoogleStyle());
9008 
9009   Style = getGNUStyle();
9010 
9011   // Test for comments at the end of function declarations.
9012   verifyFormat("void\n"
9013                "foo (int a, /*abc*/ int b) // def\n"
9014                "{\n"
9015                "}\n",
9016                Style);
9017 
9018   verifyFormat("void\n"
9019                "foo (int a, /* abc */ int b) /* def */\n"
9020                "{\n"
9021                "}\n",
9022                Style);
9023 
9024   // Definitions that should not break after return type
9025   verifyFormat("void foo (int a, int b); // def\n", Style);
9026   verifyFormat("void foo (int a, int b); /* def */\n", Style);
9027   verifyFormat("void foo (int a, int b);\n", Style);
9028 }
9029 
9030 TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) {
9031   FormatStyle NoBreak = getLLVMStyle();
9032   NoBreak.AlwaysBreakBeforeMultilineStrings = false;
9033   FormatStyle Break = getLLVMStyle();
9034   Break.AlwaysBreakBeforeMultilineStrings = true;
9035   verifyFormat("aaaa = \"bbbb\"\n"
9036                "       \"cccc\";",
9037                NoBreak);
9038   verifyFormat("aaaa =\n"
9039                "    \"bbbb\"\n"
9040                "    \"cccc\";",
9041                Break);
9042   verifyFormat("aaaa(\"bbbb\"\n"
9043                "     \"cccc\");",
9044                NoBreak);
9045   verifyFormat("aaaa(\n"
9046                "    \"bbbb\"\n"
9047                "    \"cccc\");",
9048                Break);
9049   verifyFormat("aaaa(qqq, \"bbbb\"\n"
9050                "          \"cccc\");",
9051                NoBreak);
9052   verifyFormat("aaaa(qqq,\n"
9053                "     \"bbbb\"\n"
9054                "     \"cccc\");",
9055                Break);
9056   verifyFormat("aaaa(qqq,\n"
9057                "     L\"bbbb\"\n"
9058                "     L\"cccc\");",
9059                Break);
9060   verifyFormat("aaaaa(aaaaaa, aaaaaaa(\"aaaa\"\n"
9061                "                      \"bbbb\"));",
9062                Break);
9063   verifyFormat("string s = someFunction(\n"
9064                "    \"abc\"\n"
9065                "    \"abc\");",
9066                Break);
9067 
9068   // As we break before unary operators, breaking right after them is bad.
9069   verifyFormat("string foo = abc ? \"x\"\n"
9070                "                   \"blah blah blah blah blah blah\"\n"
9071                "                 : \"y\";",
9072                Break);
9073 
9074   // Don't break if there is no column gain.
9075   verifyFormat("f(\"aaaa\"\n"
9076                "  \"bbbb\");",
9077                Break);
9078 
9079   // Treat literals with escaped newlines like multi-line string literals.
9080   EXPECT_EQ("x = \"a\\\n"
9081             "b\\\n"
9082             "c\";",
9083             format("x = \"a\\\n"
9084                    "b\\\n"
9085                    "c\";",
9086                    NoBreak));
9087   EXPECT_EQ("xxxx =\n"
9088             "    \"a\\\n"
9089             "b\\\n"
9090             "c\";",
9091             format("xxxx = \"a\\\n"
9092                    "b\\\n"
9093                    "c\";",
9094                    Break));
9095 
9096   EXPECT_EQ("NSString *const kString =\n"
9097             "    @\"aaaa\"\n"
9098             "    @\"bbbb\";",
9099             format("NSString *const kString = @\"aaaa\"\n"
9100                    "@\"bbbb\";",
9101                    Break));
9102 
9103   Break.ColumnLimit = 0;
9104   verifyFormat("const char *hello = \"hello llvm\";", Break);
9105 }
9106 
9107 TEST_F(FormatTest, AlignsPipes) {
9108   verifyFormat(
9109       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9110       "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9111       "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
9112   verifyFormat(
9113       "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
9114       "                     << aaaaaaaaaaaaaaaaaaaa;");
9115   verifyFormat(
9116       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9117       "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
9118   verifyFormat(
9119       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
9120       "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
9121   verifyFormat(
9122       "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
9123       "                \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
9124       "             << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
9125   verifyFormat(
9126       "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9127       "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9128       "         << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
9129   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9130                "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9131                "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9132                "             << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
9133   verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaaaaaa: \"\n"
9134                "             << aaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaa);");
9135   verifyFormat(
9136       "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9137       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
9138   verifyFormat(
9139       "auto Diag = diag() << aaaaaaaaaaaaaaaa(aaaaaaaaaaaa, aaaaaaaaaaaaa,\n"
9140       "                                       aaaaaaaaaaaaaaaaaaaaaaaaaa);");
9141 
9142   verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n"
9143                "             << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();");
9144   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9145                "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9146                "                    aaaaaaaaaaaaaaaaaaaaa)\n"
9147                "             << aaaaaaaaaaaaaaaaaaaaaaaaaa;");
9148   verifyFormat("LOG_IF(aaa == //\n"
9149                "       bbb)\n"
9150                "    << a << b;");
9151 
9152   // But sometimes, breaking before the first "<<" is desirable.
9153   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n"
9154                "    << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);");
9155   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n"
9156                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9157                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
9158   verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n"
9159                "    << BEF << IsTemplate << Description << E->getType();");
9160   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n"
9161                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9162                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
9163   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n"
9164                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9165                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9166                "    << aaa;");
9167 
9168   verifyFormat(
9169       "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9170       "                    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
9171 
9172   // Incomplete string literal.
9173   EXPECT_EQ("llvm::errs() << \"\n"
9174             "             << a;",
9175             format("llvm::errs() << \"\n<<a;"));
9176 
9177   verifyFormat("void f() {\n"
9178                "  CHECK_EQ(aaaa, (*bbbbbbbbb)->cccccc)\n"
9179                "      << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n"
9180                "}");
9181 
9182   // Handle 'endl'.
9183   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << endl\n"
9184                "             << bbbbbbbbbbbbbbbbbbbbbb << endl;");
9185   verifyFormat("llvm::errs() << endl << bbbbbbbbbbbbbbbbbbbbbb << endl;");
9186 
9187   // Handle '\n'.
9188   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \"\\n\"\n"
9189                "             << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";");
9190   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \'\\n\'\n"
9191                "             << bbbbbbbbbbbbbbbbbbbbbb << \'\\n\';");
9192   verifyFormat("llvm::errs() << aaaa << \"aaaaaaaaaaaaaaaaaa\\n\"\n"
9193                "             << bbbb << \"bbbbbbbbbbbbbbbbbb\\n\";");
9194   verifyFormat("llvm::errs() << \"\\n\" << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";");
9195 }
9196 
9197 TEST_F(FormatTest, KeepStringLabelValuePairsOnALine) {
9198   verifyFormat("return out << \"somepacket = {\\n\"\n"
9199                "           << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n"
9200                "           << \" bbbb = \" << pkt.bbbb << \"\\n\"\n"
9201                "           << \" cccccc = \" << pkt.cccccc << \"\\n\"\n"
9202                "           << \" ddd = [\" << pkt.ddd << \"]\\n\"\n"
9203                "           << \"}\";");
9204 
9205   verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n"
9206                "             << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n"
9207                "             << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;");
9208   verifyFormat(
9209       "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n"
9210       "             << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n"
9211       "             << \"ccccccccccccccccc = \" << ccccccccccccccccc\n"
9212       "             << \"ddddddddddddddddd = \" << ddddddddddddddddd\n"
9213       "             << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;");
9214   verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n"
9215                "             << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
9216   verifyFormat(
9217       "void f() {\n"
9218       "  llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n"
9219       "               << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
9220       "}");
9221 
9222   // Breaking before the first "<<" is generally not desirable.
9223   verifyFormat(
9224       "llvm::errs()\n"
9225       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9226       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9227       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9228       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
9229       getLLVMStyleWithColumns(70));
9230   verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n"
9231                "             << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9232                "             << \"aaaaaaaaaaaaaaaaaaa: \"\n"
9233                "             << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9234                "             << \"aaaaaaaaaaaaaaaaaaa: \"\n"
9235                "             << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
9236                getLLVMStyleWithColumns(70));
9237 
9238   verifyFormat("string v = \"aaaaaaaaaaaaaaaa: \" + aaaaaaaaaaaaaaaa +\n"
9239                "           \"aaaaaaaaaaaaaaaa: \" + aaaaaaaaaaaaaaaa +\n"
9240                "           \"aaaaaaaaaaaaaaaa: \" + aaaaaaaaaaaaaaaa;");
9241   verifyFormat("string v = StrCat(\"aaaaaaaaaaaaaaaa: \", aaaaaaaaaaaaaaaa,\n"
9242                "                  \"aaaaaaaaaaaaaaaa: \", aaaaaaaaaaaaaaaa,\n"
9243                "                  \"aaaaaaaaaaaaaaaa: \", aaaaaaaaaaaaaaaa);");
9244   verifyFormat("string v = \"aaaaaaaaaaaaaaaa: \" +\n"
9245                "           (aaaa + aaaa);",
9246                getLLVMStyleWithColumns(40));
9247   verifyFormat("string v = StrCat(\"aaaaaaaaaaaa: \" +\n"
9248                "                  (aaaaaaa + aaaaa));",
9249                getLLVMStyleWithColumns(40));
9250   verifyFormat(
9251       "string v = StrCat(\"aaaaaaaaaaaaaaaaaaaaaaaaaaa: \",\n"
9252       "                  SomeFunction(aaaaaaaaaaaa, aaaaaaaa.aaaaaaa),\n"
9253       "                  bbbbbbbbbbbbbbbbbbbbbbb);");
9254 }
9255 
9256 TEST_F(FormatTest, UnderstandsEquals) {
9257   verifyFormat(
9258       "aaaaaaaaaaaaaaaaa =\n"
9259       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
9260   verifyFormat(
9261       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
9262       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
9263   verifyFormat(
9264       "if (a) {\n"
9265       "  f();\n"
9266       "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
9267       "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
9268       "}");
9269 
9270   verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
9271                "        100000000 + 10000000) {\n}");
9272 }
9273 
9274 TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
9275   verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
9276                "    .looooooooooooooooooooooooooooooooooooooongFunction();");
9277 
9278   verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
9279                "    ->looooooooooooooooooooooooooooooooooooooongFunction();");
9280 
9281   verifyFormat(
9282       "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
9283       "                                                          Parameter2);");
9284 
9285   verifyFormat(
9286       "ShortObject->shortFunction(\n"
9287       "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
9288       "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
9289 
9290   verifyFormat("loooooooooooooongFunction(\n"
9291                "    LoooooooooooooongObject->looooooooooooooooongFunction());");
9292 
9293   verifyFormat(
9294       "function(LoooooooooooooooooooooooooooooooooooongObject\n"
9295       "             ->loooooooooooooooooooooooooooooooooooooooongFunction());");
9296 
9297   verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
9298                "    .WillRepeatedly(Return(SomeValue));");
9299   verifyFormat("void f() {\n"
9300                "  EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
9301                "      .Times(2)\n"
9302                "      .WillRepeatedly(Return(SomeValue));\n"
9303                "}");
9304   verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n"
9305                "    ccccccccccccccccccccccc);");
9306   verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9307                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9308                "          .aaaaa(aaaaa),\n"
9309                "      aaaaaaaaaaaaaaaaaaaaa);");
9310   verifyFormat("void f() {\n"
9311                "  aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9312                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n"
9313                "}");
9314   verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9315                "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9316                "    .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9317                "                        aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9318                "                        aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
9319   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9320                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9321                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9322                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n"
9323                "}");
9324 
9325   // Here, it is not necessary to wrap at "." or "->".
9326   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
9327                "    aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
9328   verifyFormat(
9329       "aaaaaaaaaaa->aaaaaaaaa(\n"
9330       "    aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9331       "    aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n");
9332 
9333   verifyFormat(
9334       "aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9335       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());");
9336   verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n"
9337                "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
9338   verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n"
9339                "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
9340 
9341   verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9342                "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9343                "    .a();");
9344 
9345   FormatStyle NoBinPacking = getLLVMStyle();
9346   NoBinPacking.BinPackParameters = false;
9347   verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
9348                "    .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
9349                "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n"
9350                "                         aaaaaaaaaaaaaaaaaaa,\n"
9351                "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
9352                NoBinPacking);
9353 
9354   // If there is a subsequent call, change to hanging indentation.
9355   verifyFormat(
9356       "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9357       "                         aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n"
9358       "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
9359   verifyFormat(
9360       "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9361       "    aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));");
9362   verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9363                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9364                "                 .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
9365   verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9366                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
9367                "               .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
9368 }
9369 
9370 TEST_F(FormatTest, WrapsTemplateDeclarations) {
9371   verifyFormat("template <typename T>\n"
9372                "virtual void loooooooooooongFunction(int Param1, int Param2);");
9373   verifyFormat("template <typename T>\n"
9374                "// T should be one of {A, B}.\n"
9375                "virtual void loooooooooooongFunction(int Param1, int Param2);");
9376   verifyFormat(
9377       "template <typename T>\n"
9378       "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;");
9379   verifyFormat("template <typename T>\n"
9380                "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n"
9381                "       int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);");
9382   verifyFormat(
9383       "template <typename T>\n"
9384       "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n"
9385       "                                      int Paaaaaaaaaaaaaaaaaaaaram2);");
9386   verifyFormat(
9387       "template <typename T>\n"
9388       "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n"
9389       "                    aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n"
9390       "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
9391   verifyFormat("template <typename T>\n"
9392                "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9393                "    int aaaaaaaaaaaaaaaaaaaaaa);");
9394   verifyFormat(
9395       "template <typename T1, typename T2 = char, typename T3 = char,\n"
9396       "          typename T4 = char>\n"
9397       "void f();");
9398   verifyFormat("template <typename aaaaaaaaaaa, typename bbbbbbbbbbbbb,\n"
9399                "          template <typename> class cccccccccccccccccccccc,\n"
9400                "          typename ddddddddddddd>\n"
9401                "class C {};");
9402   verifyFormat(
9403       "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
9404       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
9405 
9406   verifyFormat("void f() {\n"
9407                "  a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n"
9408                "      a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n"
9409                "}");
9410 
9411   verifyFormat("template <typename T> class C {};");
9412   verifyFormat("template <typename T> void f();");
9413   verifyFormat("template <typename T> void f() {}");
9414   verifyFormat(
9415       "aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
9416       "              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9417       "              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n"
9418       "    new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
9419       "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9420       "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n"
9421       "        bbbbbbbbbbbbbbbbbbbbbbbb);",
9422       getLLVMStyleWithColumns(72));
9423   EXPECT_EQ("static_cast<A< //\n"
9424             "    B> *>(\n"
9425             "\n"
9426             ");",
9427             format("static_cast<A<//\n"
9428                    "    B>*>(\n"
9429                    "\n"
9430                    "    );"));
9431   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9432                "    const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);");
9433 
9434   FormatStyle AlwaysBreak = getLLVMStyle();
9435   AlwaysBreak.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
9436   verifyFormat("template <typename T>\nclass C {};", AlwaysBreak);
9437   verifyFormat("template <typename T>\nvoid f();", AlwaysBreak);
9438   verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak);
9439   verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9440                "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n"
9441                "    ccccccccccccccccccccccccccccccccccccccccccccccc);");
9442   verifyFormat("template <template <typename> class Fooooooo,\n"
9443                "          template <typename> class Baaaaaaar>\n"
9444                "struct C {};",
9445                AlwaysBreak);
9446   verifyFormat("template <typename T> // T can be A, B or C.\n"
9447                "struct C {};",
9448                AlwaysBreak);
9449   verifyFormat("template <enum E> class A {\n"
9450                "public:\n"
9451                "  E *f();\n"
9452                "};");
9453 
9454   FormatStyle NeverBreak = getLLVMStyle();
9455   NeverBreak.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_No;
9456   verifyFormat("template <typename T> class C {};", NeverBreak);
9457   verifyFormat("template <typename T> void f();", NeverBreak);
9458   verifyFormat("template <typename T> void f() {}", NeverBreak);
9459   verifyFormat("template <typename T>\nvoid foo(aaaaaaaaaaaaaaaaaaaaaaaaaa "
9460                "bbbbbbbbbbbbbbbbbbbb) {}",
9461                NeverBreak);
9462   verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9463                "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n"
9464                "    ccccccccccccccccccccccccccccccccccccccccccccccc);",
9465                NeverBreak);
9466   verifyFormat("template <template <typename> class Fooooooo,\n"
9467                "          template <typename> class Baaaaaaar>\n"
9468                "struct C {};",
9469                NeverBreak);
9470   verifyFormat("template <typename T> // T can be A, B or C.\n"
9471                "struct C {};",
9472                NeverBreak);
9473   verifyFormat("template <enum E> class A {\n"
9474                "public:\n"
9475                "  E *f();\n"
9476                "};",
9477                NeverBreak);
9478   NeverBreak.PenaltyBreakTemplateDeclaration = 100;
9479   verifyFormat("template <typename T> void\nfoo(aaaaaaaaaaaaaaaaaaaaaaaaaa "
9480                "bbbbbbbbbbbbbbbbbbbb) {}",
9481                NeverBreak);
9482 }
9483 
9484 TEST_F(FormatTest, WrapsTemplateDeclarationsWithComments) {
9485   FormatStyle Style = getGoogleStyle(FormatStyle::LK_Cpp);
9486   Style.ColumnLimit = 60;
9487   EXPECT_EQ("// Baseline - no comments.\n"
9488             "template <\n"
9489             "    typename aaaaaaaaaaaaaaaaaaaaaa<bbbbbbbbbbbb>::value>\n"
9490             "void f() {}",
9491             format("// Baseline - no comments.\n"
9492                    "template <\n"
9493                    "    typename aaaaaaaaaaaaaaaaaaaaaa<bbbbbbbbbbbb>::value>\n"
9494                    "void f() {}",
9495                    Style));
9496 
9497   EXPECT_EQ("template <\n"
9498             "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value>  // trailing\n"
9499             "void f() {}",
9500             format("template <\n"
9501                    "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> // trailing\n"
9502                    "void f() {}",
9503                    Style));
9504 
9505   EXPECT_EQ(
9506       "template <\n"
9507       "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> /* line */\n"
9508       "void f() {}",
9509       format("template <typename aaaaaaaaaa<bbbbbbbbbbbb>::value>  /* line */\n"
9510              "void f() {}",
9511              Style));
9512 
9513   EXPECT_EQ(
9514       "template <\n"
9515       "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value>  // trailing\n"
9516       "                                               // multiline\n"
9517       "void f() {}",
9518       format("template <\n"
9519              "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> // trailing\n"
9520              "                                              // multiline\n"
9521              "void f() {}",
9522              Style));
9523 
9524   EXPECT_EQ(
9525       "template <typename aaaaaaaaaa<\n"
9526       "    bbbbbbbbbbbb>::value>  // trailing loooong\n"
9527       "void f() {}",
9528       format(
9529           "template <\n"
9530           "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> // trailing loooong\n"
9531           "void f() {}",
9532           Style));
9533 }
9534 
9535 TEST_F(FormatTest, WrapsTemplateParameters) {
9536   FormatStyle Style = getLLVMStyle();
9537   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
9538   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
9539   verifyFormat(
9540       "template <typename... a> struct q {};\n"
9541       "extern q<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa,\n"
9542       "    aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>\n"
9543       "    y;",
9544       Style);
9545   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
9546   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
9547   verifyFormat(
9548       "template <typename... a> struct r {};\n"
9549       "extern r<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa,\n"
9550       "    aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>\n"
9551       "    y;",
9552       Style);
9553   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
9554   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
9555   verifyFormat("template <typename... a> struct s {};\n"
9556                "extern s<\n"
9557                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
9558                "aaaaaaaaaaaaaaaaaaaaaa,\n"
9559                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
9560                "aaaaaaaaaaaaaaaaaaaaaa>\n"
9561                "    y;",
9562                Style);
9563   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
9564   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
9565   verifyFormat("template <typename... a> struct t {};\n"
9566                "extern t<\n"
9567                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
9568                "aaaaaaaaaaaaaaaaaaaaaa,\n"
9569                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
9570                "aaaaaaaaaaaaaaaaaaaaaa>\n"
9571                "    y;",
9572                Style);
9573 }
9574 
9575 TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
9576   verifyFormat(
9577       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
9578       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
9579   verifyFormat(
9580       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
9581       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9582       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
9583 
9584   // FIXME: Should we have the extra indent after the second break?
9585   verifyFormat(
9586       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
9587       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
9588       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
9589 
9590   verifyFormat(
9591       "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n"
9592       "                    cccccccccccccccccccccccccccccccccccccccccccccc());");
9593 
9594   // Breaking at nested name specifiers is generally not desirable.
9595   verifyFormat(
9596       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9597       "    aaaaaaaaaaaaaaaaaaaaaaa);");
9598 
9599   verifyFormat("aaaaaaaaaaaaaaaaaa(aaaaaaaa,\n"
9600                "                   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
9601                "                       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9602                "                   aaaaaaaaaaaaaaaaaaaaa);",
9603                getLLVMStyleWithColumns(74));
9604 
9605   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
9606                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9607                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
9608 }
9609 
9610 TEST_F(FormatTest, UnderstandsTemplateParameters) {
9611   verifyFormat("A<int> a;");
9612   verifyFormat("A<A<A<int>>> a;");
9613   verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
9614   verifyFormat("bool x = a < 1 || 2 > a;");
9615   verifyFormat("bool x = 5 < f<int>();");
9616   verifyFormat("bool x = f<int>() > 5;");
9617   verifyFormat("bool x = 5 < a<int>::x;");
9618   verifyFormat("bool x = a < 4 ? a > 2 : false;");
9619   verifyFormat("bool x = f() ? a < 2 : a > 2;");
9620 
9621   verifyGoogleFormat("A<A<int>> a;");
9622   verifyGoogleFormat("A<A<A<int>>> a;");
9623   verifyGoogleFormat("A<A<A<A<int>>>> a;");
9624   verifyGoogleFormat("A<A<int> > a;");
9625   verifyGoogleFormat("A<A<A<int> > > a;");
9626   verifyGoogleFormat("A<A<A<A<int> > > > a;");
9627   verifyGoogleFormat("A<::A<int>> a;");
9628   verifyGoogleFormat("A<::A> a;");
9629   verifyGoogleFormat("A< ::A> a;");
9630   verifyGoogleFormat("A< ::A<int> > a;");
9631   EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle()));
9632   EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle()));
9633   EXPECT_EQ("A<::A<int>> a;", format("A< ::A<int>> a;", getGoogleStyle()));
9634   EXPECT_EQ("A<::A<int>> a;", format("A<::A<int> > a;", getGoogleStyle()));
9635   EXPECT_EQ("auto x = [] { A<A<A<A>>> a; };",
9636             format("auto x=[]{A<A<A<A> >> a;};", getGoogleStyle()));
9637 
9638   verifyFormat("A<A<int>> a;", getChromiumStyle(FormatStyle::LK_Cpp));
9639 
9640   // template closer followed by a token that starts with > or =
9641   verifyFormat("bool b = a<1> > 1;");
9642   verifyFormat("bool b = a<1> >= 1;");
9643   verifyFormat("int i = a<1> >> 1;");
9644   FormatStyle Style = getLLVMStyle();
9645   Style.SpaceBeforeAssignmentOperators = false;
9646   verifyFormat("bool b= a<1> == 1;", Style);
9647   verifyFormat("a<int> = 1;", Style);
9648   verifyFormat("a<int> >>= 1;", Style);
9649 
9650   verifyFormat("test < a | b >> c;");
9651   verifyFormat("test<test<a | b>> c;");
9652   verifyFormat("test >> a >> b;");
9653   verifyFormat("test << a >> b;");
9654 
9655   verifyFormat("f<int>();");
9656   verifyFormat("template <typename T> void f() {}");
9657   verifyFormat("struct A<std::enable_if<sizeof(T2) < sizeof(int32)>::type>;");
9658   verifyFormat("struct A<std::enable_if<sizeof(T2) ? sizeof(int32) : "
9659                "sizeof(char)>::type>;");
9660   verifyFormat("template <class T> struct S<std::is_arithmetic<T>{}> {};");
9661   verifyFormat("f(a.operator()<A>());");
9662   verifyFormat("f(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9663                "      .template operator()<A>());",
9664                getLLVMStyleWithColumns(35));
9665   verifyFormat("bool_constant<a && noexcept(f())>");
9666   verifyFormat("bool_constant<a || noexcept(f())>");
9667 
9668   // Not template parameters.
9669   verifyFormat("return a < b && c > d;");
9670   verifyFormat("void f() {\n"
9671                "  while (a < b && c > d) {\n"
9672                "  }\n"
9673                "}");
9674   verifyFormat("template <typename... Types>\n"
9675                "typename enable_if<0 < sizeof...(Types)>::type Foo() {}");
9676 
9677   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
9678                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaa);",
9679                getLLVMStyleWithColumns(60));
9680   verifyFormat("static_assert(is_convertible<A &&, B>::value, \"AAA\");");
9681   verifyFormat("Constructor(A... a) : a_(X<A>{std::forward<A>(a)}...) {}");
9682   verifyFormat("< < < < < < < < < < < < < < < < < < < < < < < < < < < < < <");
9683   verifyFormat("some_templated_type<decltype([](int i) { return i; })>");
9684 }
9685 
9686 TEST_F(FormatTest, UnderstandsShiftOperators) {
9687   verifyFormat("if (i < x >> 1)");
9688   verifyFormat("while (i < x >> 1)");
9689   verifyFormat("for (unsigned i = 0; i < i; ++i, v = v >> 1)");
9690   verifyFormat("for (unsigned i = 0; i < x >> 1; ++i, v = v >> 1)");
9691   verifyFormat(
9692       "for (std::vector<int>::iterator i = 0; i < x >> 1; ++i, v = v >> 1)");
9693   verifyFormat("Foo.call<Bar<Function>>()");
9694   verifyFormat("if (Foo.call<Bar<Function>>() == 0)");
9695   verifyFormat("for (std::vector<std::pair<int>>::iterator i = 0; i < x >> 1; "
9696                "++i, v = v >> 1)");
9697   verifyFormat("if (w<u<v<x>>, 1>::t)");
9698 }
9699 
9700 TEST_F(FormatTest, BitshiftOperatorWidth) {
9701   EXPECT_EQ("int a = 1 << 2; /* foo\n"
9702             "                   bar */",
9703             format("int    a=1<<2;  /* foo\n"
9704                    "                   bar */"));
9705 
9706   EXPECT_EQ("int b = 256 >> 1; /* foo\n"
9707             "                     bar */",
9708             format("int  b  =256>>1 ;  /* foo\n"
9709                    "                      bar */"));
9710 }
9711 
9712 TEST_F(FormatTest, UnderstandsBinaryOperators) {
9713   verifyFormat("COMPARE(a, ==, b);");
9714   verifyFormat("auto s = sizeof...(Ts) - 1;");
9715 }
9716 
9717 TEST_F(FormatTest, UnderstandsPointersToMembers) {
9718   verifyFormat("int A::*x;");
9719   verifyFormat("int (S::*func)(void *);");
9720   verifyFormat("void f() { int (S::*func)(void *); }");
9721   verifyFormat("typedef bool *(Class::*Member)() const;");
9722   verifyFormat("void f() {\n"
9723                "  (a->*f)();\n"
9724                "  a->*x;\n"
9725                "  (a.*f)();\n"
9726                "  ((*a).*f)();\n"
9727                "  a.*x;\n"
9728                "}");
9729   verifyFormat("void f() {\n"
9730                "  (a->*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n"
9731                "      aaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);\n"
9732                "}");
9733   verifyFormat(
9734       "(aaaaaaaaaa->*bbbbbbb)(\n"
9735       "    aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
9736   FormatStyle Style = getLLVMStyle();
9737   Style.PointerAlignment = FormatStyle::PAS_Left;
9738   verifyFormat("typedef bool* (Class::*Member)() const;", Style);
9739 }
9740 
9741 TEST_F(FormatTest, UnderstandsUnaryOperators) {
9742   verifyFormat("int a = -2;");
9743   verifyFormat("f(-1, -2, -3);");
9744   verifyFormat("a[-1] = 5;");
9745   verifyFormat("int a = 5 + -2;");
9746   verifyFormat("if (i == -1) {\n}");
9747   verifyFormat("if (i != -1) {\n}");
9748   verifyFormat("if (i > -1) {\n}");
9749   verifyFormat("if (i < -1) {\n}");
9750   verifyFormat("++(a->f());");
9751   verifyFormat("--(a->f());");
9752   verifyFormat("(a->f())++;");
9753   verifyFormat("a[42]++;");
9754   verifyFormat("if (!(a->f())) {\n}");
9755   verifyFormat("if (!+i) {\n}");
9756   verifyFormat("~&a;");
9757 
9758   verifyFormat("a-- > b;");
9759   verifyFormat("b ? -a : c;");
9760   verifyFormat("n * sizeof char16;");
9761   verifyFormat("n * alignof char16;", getGoogleStyle());
9762   verifyFormat("sizeof(char);");
9763   verifyFormat("alignof(char);", getGoogleStyle());
9764 
9765   verifyFormat("return -1;");
9766   verifyFormat("throw -1;");
9767   verifyFormat("switch (a) {\n"
9768                "case -1:\n"
9769                "  break;\n"
9770                "}");
9771   verifyFormat("#define X -1");
9772   verifyFormat("#define X -kConstant");
9773 
9774   verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {-5, +3};");
9775   verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {+5, -3};");
9776 
9777   verifyFormat("int a = /* confusing comment */ -1;");
9778   // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case.
9779   verifyFormat("int a = i /* confusing comment */++;");
9780 
9781   verifyFormat("co_yield -1;");
9782   verifyFormat("co_return -1;");
9783 
9784   // Check that * is not treated as a binary operator when we set
9785   // PointerAlignment as PAS_Left after a keyword and not a declaration.
9786   FormatStyle PASLeftStyle = getLLVMStyle();
9787   PASLeftStyle.PointerAlignment = FormatStyle::PAS_Left;
9788   verifyFormat("co_return *a;", PASLeftStyle);
9789   verifyFormat("co_await *a;", PASLeftStyle);
9790   verifyFormat("co_yield *a", PASLeftStyle);
9791   verifyFormat("return *a;", PASLeftStyle);
9792 }
9793 
9794 TEST_F(FormatTest, DoesNotIndentRelativeToUnaryOperators) {
9795   verifyFormat("if (!aaaaaaaaaa( // break\n"
9796                "        aaaaa)) {\n"
9797                "}");
9798   verifyFormat("aaaaaaaaaa(!aaaaaaaaaa( // break\n"
9799                "    aaaaa));");
9800   verifyFormat("*aaa = aaaaaaa( // break\n"
9801                "    bbbbbb);");
9802 }
9803 
9804 TEST_F(FormatTest, UnderstandsOverloadedOperators) {
9805   verifyFormat("bool operator<();");
9806   verifyFormat("bool operator>();");
9807   verifyFormat("bool operator=();");
9808   verifyFormat("bool operator==();");
9809   verifyFormat("bool operator!=();");
9810   verifyFormat("int operator+();");
9811   verifyFormat("int operator++();");
9812   verifyFormat("int operator++(int) volatile noexcept;");
9813   verifyFormat("bool operator,();");
9814   verifyFormat("bool operator();");
9815   verifyFormat("bool operator()();");
9816   verifyFormat("bool operator[]();");
9817   verifyFormat("operator bool();");
9818   verifyFormat("operator int();");
9819   verifyFormat("operator void *();");
9820   verifyFormat("operator SomeType<int>();");
9821   verifyFormat("operator SomeType<int, int>();");
9822   verifyFormat("operator SomeType<SomeType<int>>();");
9823   verifyFormat("operator< <>();");
9824   verifyFormat("operator<< <>();");
9825   verifyFormat("< <>");
9826 
9827   verifyFormat("void *operator new(std::size_t size);");
9828   verifyFormat("void *operator new[](std::size_t size);");
9829   verifyFormat("void operator delete(void *ptr);");
9830   verifyFormat("void operator delete[](void *ptr);");
9831   verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n"
9832                "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);");
9833   verifyFormat("aaaaaaaaaaaaaaaaaaaaaa operator,(\n"
9834                "    aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaaaaaaaaaaaaaaaaaaa) const;");
9835 
9836   verifyFormat(
9837       "ostream &operator<<(ostream &OutputStream,\n"
9838       "                    SomeReallyLongType WithSomeReallyLongValue);");
9839   verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n"
9840                "               const aaaaaaaaaaaaaaaaaaaaa &right) {\n"
9841                "  return left.group < right.group;\n"
9842                "}");
9843   verifyFormat("SomeType &operator=(const SomeType &S);");
9844   verifyFormat("f.template operator()<int>();");
9845 
9846   verifyGoogleFormat("operator void*();");
9847   verifyGoogleFormat("operator SomeType<SomeType<int>>();");
9848   verifyGoogleFormat("operator ::A();");
9849 
9850   verifyFormat("using A::operator+;");
9851   verifyFormat("inline A operator^(const A &lhs, const A &rhs) {}\n"
9852                "int i;");
9853 
9854   // Calling an operator as a member function.
9855   verifyFormat("void f() { a.operator*(); }");
9856   verifyFormat("void f() { a.operator*(b & b); }");
9857   verifyFormat("void f() { a->operator&(a * b); }");
9858   verifyFormat("void f() { NS::a.operator+(*b * *b); }");
9859   // TODO: Calling an operator as a non-member function is hard to distinguish.
9860   // https://llvm.org/PR50629
9861   // verifyFormat("void f() { operator*(a & a); }");
9862   // verifyFormat("void f() { operator&(a, b * b); }");
9863 
9864   verifyFormat("::operator delete(foo);");
9865   verifyFormat("::operator new(n * sizeof(foo));");
9866   verifyFormat("foo() { ::operator delete(foo); }");
9867   verifyFormat("foo() { ::operator new(n * sizeof(foo)); }");
9868 }
9869 
9870 TEST_F(FormatTest, UnderstandsFunctionRefQualification) {
9871   verifyFormat("void A::b() && {}");
9872   verifyFormat("void A::b() &&noexcept {}");
9873   verifyFormat("Deleted &operator=(const Deleted &) & = default;");
9874   verifyFormat("Deleted &operator=(const Deleted &) && = delete;");
9875   verifyFormat("Deleted &operator=(const Deleted &) &noexcept = default;");
9876   verifyFormat("SomeType MemberFunction(const Deleted &) & = delete;");
9877   verifyFormat("SomeType MemberFunction(const Deleted &) && = delete;");
9878   verifyFormat("Deleted &operator=(const Deleted &) &;");
9879   verifyFormat("Deleted &operator=(const Deleted &) &&;");
9880   verifyFormat("SomeType MemberFunction(const Deleted &) &;");
9881   verifyFormat("SomeType MemberFunction(const Deleted &) &&;");
9882   verifyFormat("SomeType MemberFunction(const Deleted &) && {}");
9883   verifyFormat("SomeType MemberFunction(const Deleted &) && final {}");
9884   verifyFormat("SomeType MemberFunction(const Deleted &) && override {}");
9885   verifyFormat("SomeType MemberFunction(const Deleted &) &&noexcept {}");
9886   verifyFormat("void Fn(T const &) const &;");
9887   verifyFormat("void Fn(T const volatile &&) const volatile &&;");
9888   verifyFormat("void Fn(T const volatile &&) const volatile &&noexcept;");
9889   verifyFormat("template <typename T>\n"
9890                "void F(T) && = delete;",
9891                getGoogleStyle());
9892   verifyFormat("template <typename T> void operator=(T) &;");
9893   verifyFormat("template <typename T> void operator=(T) const &;");
9894   verifyFormat("template <typename T> void operator=(T) &noexcept;");
9895   verifyFormat("template <typename T> void operator=(T) & = default;");
9896   verifyFormat("template <typename T> void operator=(T) &&;");
9897   verifyFormat("template <typename T> void operator=(T) && = delete;");
9898   verifyFormat("template <typename T> void operator=(T) & {}");
9899   verifyFormat("template <typename T> void operator=(T) && {}");
9900 
9901   FormatStyle AlignLeft = getLLVMStyle();
9902   AlignLeft.PointerAlignment = FormatStyle::PAS_Left;
9903   verifyFormat("void A::b() && {}", AlignLeft);
9904   verifyFormat("void A::b() && noexcept {}", AlignLeft);
9905   verifyFormat("Deleted& operator=(const Deleted&) & = default;", AlignLeft);
9906   verifyFormat("Deleted& operator=(const Deleted&) & noexcept = default;",
9907                AlignLeft);
9908   verifyFormat("SomeType MemberFunction(const Deleted&) & = delete;",
9909                AlignLeft);
9910   verifyFormat("Deleted& operator=(const Deleted&) &;", AlignLeft);
9911   verifyFormat("SomeType MemberFunction(const Deleted&) &;", AlignLeft);
9912   verifyFormat("auto Function(T t) & -> void {}", AlignLeft);
9913   verifyFormat("auto Function(T... t) & -> void {}", AlignLeft);
9914   verifyFormat("auto Function(T) & -> void {}", AlignLeft);
9915   verifyFormat("auto Function(T) & -> void;", AlignLeft);
9916   verifyFormat("void Fn(T const&) const&;", AlignLeft);
9917   verifyFormat("void Fn(T const volatile&&) const volatile&&;", AlignLeft);
9918   verifyFormat("void Fn(T const volatile&&) const volatile&& noexcept;",
9919                AlignLeft);
9920   verifyFormat("template <typename T> void operator=(T) &;", AlignLeft);
9921   verifyFormat("template <typename T> void operator=(T) const&;", AlignLeft);
9922   verifyFormat("template <typename T> void operator=(T) & noexcept;",
9923                AlignLeft);
9924   verifyFormat("template <typename T> void operator=(T) & = default;",
9925                AlignLeft);
9926   verifyFormat("template <typename T> void operator=(T) &&;", AlignLeft);
9927   verifyFormat("template <typename T> void operator=(T) && = delete;",
9928                AlignLeft);
9929   verifyFormat("template <typename T> void operator=(T) & {}", AlignLeft);
9930   verifyFormat("template <typename T> void operator=(T) && {}", AlignLeft);
9931 
9932   FormatStyle AlignMiddle = getLLVMStyle();
9933   AlignMiddle.PointerAlignment = FormatStyle::PAS_Middle;
9934   verifyFormat("void A::b() && {}", AlignMiddle);
9935   verifyFormat("void A::b() && noexcept {}", AlignMiddle);
9936   verifyFormat("Deleted & operator=(const Deleted &) & = default;",
9937                AlignMiddle);
9938   verifyFormat("Deleted & operator=(const Deleted &) & noexcept = default;",
9939                AlignMiddle);
9940   verifyFormat("SomeType MemberFunction(const Deleted &) & = delete;",
9941                AlignMiddle);
9942   verifyFormat("Deleted & operator=(const Deleted &) &;", AlignMiddle);
9943   verifyFormat("SomeType MemberFunction(const Deleted &) &;", AlignMiddle);
9944   verifyFormat("auto Function(T t) & -> void {}", AlignMiddle);
9945   verifyFormat("auto Function(T... t) & -> void {}", AlignMiddle);
9946   verifyFormat("auto Function(T) & -> void {}", AlignMiddle);
9947   verifyFormat("auto Function(T) & -> void;", AlignMiddle);
9948   verifyFormat("void Fn(T const &) const &;", AlignMiddle);
9949   verifyFormat("void Fn(T const volatile &&) const volatile &&;", AlignMiddle);
9950   verifyFormat("void Fn(T const volatile &&) const volatile && noexcept;",
9951                AlignMiddle);
9952   verifyFormat("template <typename T> void operator=(T) &;", AlignMiddle);
9953   verifyFormat("template <typename T> void operator=(T) const &;", AlignMiddle);
9954   verifyFormat("template <typename T> void operator=(T) & noexcept;",
9955                AlignMiddle);
9956   verifyFormat("template <typename T> void operator=(T) & = default;",
9957                AlignMiddle);
9958   verifyFormat("template <typename T> void operator=(T) &&;", AlignMiddle);
9959   verifyFormat("template <typename T> void operator=(T) && = delete;",
9960                AlignMiddle);
9961   verifyFormat("template <typename T> void operator=(T) & {}", AlignMiddle);
9962   verifyFormat("template <typename T> void operator=(T) && {}", AlignMiddle);
9963 
9964   FormatStyle Spaces = getLLVMStyle();
9965   Spaces.SpacesInCStyleCastParentheses = true;
9966   verifyFormat("Deleted &operator=(const Deleted &) & = default;", Spaces);
9967   verifyFormat("SomeType MemberFunction(const Deleted &) & = delete;", Spaces);
9968   verifyFormat("Deleted &operator=(const Deleted &) &;", Spaces);
9969   verifyFormat("SomeType MemberFunction(const Deleted &) &;", Spaces);
9970 
9971   Spaces.SpacesInCStyleCastParentheses = false;
9972   Spaces.SpacesInParentheses = true;
9973   verifyFormat("Deleted &operator=( const Deleted & ) & = default;", Spaces);
9974   verifyFormat("SomeType MemberFunction( const Deleted & ) & = delete;",
9975                Spaces);
9976   verifyFormat("Deleted &operator=( const Deleted & ) &;", Spaces);
9977   verifyFormat("SomeType MemberFunction( const Deleted & ) &;", Spaces);
9978 
9979   FormatStyle BreakTemplate = getLLVMStyle();
9980   BreakTemplate.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
9981 
9982   verifyFormat("struct f {\n"
9983                "  template <class T>\n"
9984                "  int &foo(const std::string &str) &noexcept {}\n"
9985                "};",
9986                BreakTemplate);
9987 
9988   verifyFormat("struct f {\n"
9989                "  template <class T>\n"
9990                "  int &foo(const std::string &str) &&noexcept {}\n"
9991                "};",
9992                BreakTemplate);
9993 
9994   verifyFormat("struct f {\n"
9995                "  template <class T>\n"
9996                "  int &foo(const std::string &str) const &noexcept {}\n"
9997                "};",
9998                BreakTemplate);
9999 
10000   verifyFormat("struct f {\n"
10001                "  template <class T>\n"
10002                "  int &foo(const std::string &str) const &noexcept {}\n"
10003                "};",
10004                BreakTemplate);
10005 
10006   verifyFormat("struct f {\n"
10007                "  template <class T>\n"
10008                "  auto foo(const std::string &str) &&noexcept -> int & {}\n"
10009                "};",
10010                BreakTemplate);
10011 
10012   FormatStyle AlignLeftBreakTemplate = getLLVMStyle();
10013   AlignLeftBreakTemplate.AlwaysBreakTemplateDeclarations =
10014       FormatStyle::BTDS_Yes;
10015   AlignLeftBreakTemplate.PointerAlignment = FormatStyle::PAS_Left;
10016 
10017   verifyFormat("struct f {\n"
10018                "  template <class T>\n"
10019                "  int& foo(const std::string& str) & noexcept {}\n"
10020                "};",
10021                AlignLeftBreakTemplate);
10022 
10023   verifyFormat("struct f {\n"
10024                "  template <class T>\n"
10025                "  int& foo(const std::string& str) && noexcept {}\n"
10026                "};",
10027                AlignLeftBreakTemplate);
10028 
10029   verifyFormat("struct f {\n"
10030                "  template <class T>\n"
10031                "  int& foo(const std::string& str) const& noexcept {}\n"
10032                "};",
10033                AlignLeftBreakTemplate);
10034 
10035   verifyFormat("struct f {\n"
10036                "  template <class T>\n"
10037                "  int& foo(const std::string& str) const&& noexcept {}\n"
10038                "};",
10039                AlignLeftBreakTemplate);
10040 
10041   verifyFormat("struct f {\n"
10042                "  template <class T>\n"
10043                "  auto foo(const std::string& str) && noexcept -> int& {}\n"
10044                "};",
10045                AlignLeftBreakTemplate);
10046 
10047   // The `&` in `Type&` should not be confused with a trailing `&` of
10048   // DEPRECATED(reason) member function.
10049   verifyFormat("struct f {\n"
10050                "  template <class T>\n"
10051                "  DEPRECATED(reason)\n"
10052                "  Type &foo(arguments) {}\n"
10053                "};",
10054                BreakTemplate);
10055 
10056   verifyFormat("struct f {\n"
10057                "  template <class T>\n"
10058                "  DEPRECATED(reason)\n"
10059                "  Type& foo(arguments) {}\n"
10060                "};",
10061                AlignLeftBreakTemplate);
10062 
10063   verifyFormat("void (*foopt)(int) = &func;");
10064 
10065   FormatStyle DerivePointerAlignment = getLLVMStyle();
10066   DerivePointerAlignment.DerivePointerAlignment = true;
10067   // There's always a space between the function and its trailing qualifiers.
10068   // This isn't evidence for PAS_Right (or for PAS_Left).
10069   std::string Prefix = "void a() &;\n"
10070                        "void b() &;\n";
10071   verifyFormat(Prefix + "int* x;", DerivePointerAlignment);
10072   verifyFormat(Prefix + "int *x;", DerivePointerAlignment);
10073   // Same if the function is an overloaded operator, and with &&.
10074   Prefix = "void operator()() &&;\n"
10075            "void operator()() &&;\n";
10076   verifyFormat(Prefix + "int* x;", DerivePointerAlignment);
10077   verifyFormat(Prefix + "int *x;", DerivePointerAlignment);
10078   // However a space between cv-qualifiers and ref-qualifiers *is* evidence.
10079   Prefix = "void a() const &;\n"
10080            "void b() const &;\n";
10081   EXPECT_EQ(Prefix + "int *x;",
10082             format(Prefix + "int* x;", DerivePointerAlignment));
10083 }
10084 
10085 TEST_F(FormatTest, UnderstandsNewAndDelete) {
10086   verifyFormat("void f() {\n"
10087                "  A *a = new A;\n"
10088                "  A *a = new (placement) A;\n"
10089                "  delete a;\n"
10090                "  delete (A *)a;\n"
10091                "}");
10092   verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
10093                "    typename aaaaaaaaaaaaaaaaaaaaaaaa();");
10094   verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
10095                "    new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
10096                "        typename aaaaaaaaaaaaaaaaaaaaaaaa();");
10097   verifyFormat("delete[] h->p;");
10098   verifyFormat("delete[] (void *)p;");
10099 
10100   verifyFormat("void operator delete(void *foo) ATTRIB;");
10101   verifyFormat("void operator new(void *foo) ATTRIB;");
10102   verifyFormat("void operator delete[](void *foo) ATTRIB;");
10103   verifyFormat("void operator delete(void *ptr) noexcept;");
10104 
10105   EXPECT_EQ("void new(link p);\n"
10106             "void delete(link p);\n",
10107             format("void new (link p);\n"
10108                    "void delete (link p);\n"));
10109 }
10110 
10111 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
10112   verifyFormat("int *f(int *a) {}");
10113   verifyFormat("int main(int argc, char **argv) {}");
10114   verifyFormat("Test::Test(int b) : a(b * b) {}");
10115   verifyIndependentOfContext("f(a, *a);");
10116   verifyFormat("void g() { f(*a); }");
10117   verifyIndependentOfContext("int a = b * 10;");
10118   verifyIndependentOfContext("int a = 10 * b;");
10119   verifyIndependentOfContext("int a = b * c;");
10120   verifyIndependentOfContext("int a += b * c;");
10121   verifyIndependentOfContext("int a -= b * c;");
10122   verifyIndependentOfContext("int a *= b * c;");
10123   verifyIndependentOfContext("int a /= b * c;");
10124   verifyIndependentOfContext("int a = *b;");
10125   verifyIndependentOfContext("int a = *b * c;");
10126   verifyIndependentOfContext("int a = b * *c;");
10127   verifyIndependentOfContext("int a = b * (10);");
10128   verifyIndependentOfContext("S << b * (10);");
10129   verifyIndependentOfContext("return 10 * b;");
10130   verifyIndependentOfContext("return *b * *c;");
10131   verifyIndependentOfContext("return a & ~b;");
10132   verifyIndependentOfContext("f(b ? *c : *d);");
10133   verifyIndependentOfContext("int a = b ? *c : *d;");
10134   verifyIndependentOfContext("*b = a;");
10135   verifyIndependentOfContext("a * ~b;");
10136   verifyIndependentOfContext("a * !b;");
10137   verifyIndependentOfContext("a * +b;");
10138   verifyIndependentOfContext("a * -b;");
10139   verifyIndependentOfContext("a * ++b;");
10140   verifyIndependentOfContext("a * --b;");
10141   verifyIndependentOfContext("a[4] * b;");
10142   verifyIndependentOfContext("a[a * a] = 1;");
10143   verifyIndependentOfContext("f() * b;");
10144   verifyIndependentOfContext("a * [self dostuff];");
10145   verifyIndependentOfContext("int x = a * (a + b);");
10146   verifyIndependentOfContext("(a *)(a + b);");
10147   verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;");
10148   verifyIndependentOfContext("int *pa = (int *)&a;");
10149   verifyIndependentOfContext("return sizeof(int **);");
10150   verifyIndependentOfContext("return sizeof(int ******);");
10151   verifyIndependentOfContext("return (int **&)a;");
10152   verifyIndependentOfContext("f((*PointerToArray)[10]);");
10153   verifyFormat("void f(Type (*parameter)[10]) {}");
10154   verifyFormat("void f(Type (&parameter)[10]) {}");
10155   verifyGoogleFormat("return sizeof(int**);");
10156   verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
10157   verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
10158   verifyFormat("auto a = [](int **&, int ***) {};");
10159   verifyFormat("auto PointerBinding = [](const char *S) {};");
10160   verifyFormat("typedef typeof(int(int, int)) *MyFunc;");
10161   verifyFormat("[](const decltype(*a) &value) {}");
10162   verifyFormat("[](const typeof(*a) &value) {}");
10163   verifyFormat("[](const _Atomic(a *) &value) {}");
10164   verifyFormat("[](const __underlying_type(a) &value) {}");
10165   verifyFormat("decltype(a * b) F();");
10166   verifyFormat("typeof(a * b) F();");
10167   verifyFormat("#define MACRO() [](A *a) { return 1; }");
10168   verifyFormat("Constructor() : member([](A *a, B *b) {}) {}");
10169   verifyIndependentOfContext("typedef void (*f)(int *a);");
10170   verifyIndependentOfContext("int i{a * b};");
10171   verifyIndependentOfContext("aaa && aaa->f();");
10172   verifyIndependentOfContext("int x = ~*p;");
10173   verifyFormat("Constructor() : a(a), area(width * height) {}");
10174   verifyFormat("Constructor() : a(a), area(a, width * height) {}");
10175   verifyGoogleFormat("MACRO Constructor(const int& i) : a(a), b(b) {}");
10176   verifyFormat("void f() { f(a, c * d); }");
10177   verifyFormat("void f() { f(new a(), c * d); }");
10178   verifyFormat("void f(const MyOverride &override);");
10179   verifyFormat("void f(const MyFinal &final);");
10180   verifyIndependentOfContext("bool a = f() && override.f();");
10181   verifyIndependentOfContext("bool a = f() && final.f();");
10182 
10183   verifyIndependentOfContext("InvalidRegions[*R] = 0;");
10184 
10185   verifyIndependentOfContext("A<int *> a;");
10186   verifyIndependentOfContext("A<int **> a;");
10187   verifyIndependentOfContext("A<int *, int *> a;");
10188   verifyIndependentOfContext("A<int *[]> a;");
10189   verifyIndependentOfContext(
10190       "const char *const p = reinterpret_cast<const char *const>(q);");
10191   verifyIndependentOfContext("A<int **, int **> a;");
10192   verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);");
10193   verifyFormat("for (char **a = b; *a; ++a) {\n}");
10194   verifyFormat("for (; a && b;) {\n}");
10195   verifyFormat("bool foo = true && [] { return false; }();");
10196 
10197   verifyFormat(
10198       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
10199       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
10200 
10201   verifyGoogleFormat("int const* a = &b;");
10202   verifyGoogleFormat("**outparam = 1;");
10203   verifyGoogleFormat("*outparam = a * b;");
10204   verifyGoogleFormat("int main(int argc, char** argv) {}");
10205   verifyGoogleFormat("A<int*> a;");
10206   verifyGoogleFormat("A<int**> a;");
10207   verifyGoogleFormat("A<int*, int*> a;");
10208   verifyGoogleFormat("A<int**, int**> a;");
10209   verifyGoogleFormat("f(b ? *c : *d);");
10210   verifyGoogleFormat("int a = b ? *c : *d;");
10211   verifyGoogleFormat("Type* t = **x;");
10212   verifyGoogleFormat("Type* t = *++*x;");
10213   verifyGoogleFormat("*++*x;");
10214   verifyGoogleFormat("Type* t = const_cast<T*>(&*x);");
10215   verifyGoogleFormat("Type* t = x++ * y;");
10216   verifyGoogleFormat(
10217       "const char* const p = reinterpret_cast<const char* const>(q);");
10218   verifyGoogleFormat("void f(int i = 0, SomeType** temps = NULL);");
10219   verifyGoogleFormat("void f(Bar* a = nullptr, Bar* b);");
10220   verifyGoogleFormat("template <typename T>\n"
10221                      "void f(int i = 0, SomeType** temps = NULL);");
10222 
10223   FormatStyle Left = getLLVMStyle();
10224   Left.PointerAlignment = FormatStyle::PAS_Left;
10225   verifyFormat("x = *a(x) = *a(y);", Left);
10226   verifyFormat("for (;; *a = b) {\n}", Left);
10227   verifyFormat("return *this += 1;", Left);
10228   verifyFormat("throw *x;", Left);
10229   verifyFormat("delete *x;", Left);
10230   verifyFormat("typedef typeof(int(int, int))* MyFuncPtr;", Left);
10231   verifyFormat("[](const decltype(*a)* ptr) {}", Left);
10232   verifyFormat("[](const typeof(*a)* ptr) {}", Left);
10233   verifyFormat("[](const _Atomic(a*)* ptr) {}", Left);
10234   verifyFormat("[](const __underlying_type(a)* ptr) {}", Left);
10235   verifyFormat("typedef typeof /*comment*/ (int(int, int))* MyFuncPtr;", Left);
10236   verifyFormat("auto x(A&&, B&&, C&&) -> D;", Left);
10237   verifyFormat("auto x = [](A&&, B&&, C&&) -> D {};", Left);
10238   verifyFormat("template <class T> X(T&&, T&&, T&&) -> X<T>;", Left);
10239 
10240   verifyIndependentOfContext("a = *(x + y);");
10241   verifyIndependentOfContext("a = &(x + y);");
10242   verifyIndependentOfContext("*(x + y).call();");
10243   verifyIndependentOfContext("&(x + y)->call();");
10244   verifyFormat("void f() { &(*I).first; }");
10245 
10246   verifyIndependentOfContext("f(b * /* confusing comment */ ++c);");
10247   verifyFormat("f(* /* confusing comment */ foo);");
10248   verifyFormat("void (* /*deleter*/)(const Slice &key, void *value)");
10249   verifyFormat("void foo(int * // this is the first paramters\n"
10250                "         ,\n"
10251                "         int second);");
10252   verifyFormat("double term = a * // first\n"
10253                "              b;");
10254   verifyFormat(
10255       "int *MyValues = {\n"
10256       "    *A, // Operator detection might be confused by the '{'\n"
10257       "    *BB // Operator detection might be confused by previous comment\n"
10258       "};");
10259 
10260   verifyIndependentOfContext("if (int *a = &b)");
10261   verifyIndependentOfContext("if (int &a = *b)");
10262   verifyIndependentOfContext("if (a & b[i])");
10263   verifyIndependentOfContext("if constexpr (a & b[i])");
10264   verifyIndependentOfContext("if CONSTEXPR (a & b[i])");
10265   verifyIndependentOfContext("if (a * (b * c))");
10266   verifyIndependentOfContext("if constexpr (a * (b * c))");
10267   verifyIndependentOfContext("if CONSTEXPR (a * (b * c))");
10268   verifyIndependentOfContext("if (a::b::c::d & b[i])");
10269   verifyIndependentOfContext("if (*b[i])");
10270   verifyIndependentOfContext("if (int *a = (&b))");
10271   verifyIndependentOfContext("while (int *a = &b)");
10272   verifyIndependentOfContext("while (a * (b * c))");
10273   verifyIndependentOfContext("size = sizeof *a;");
10274   verifyIndependentOfContext("if (a && (b = c))");
10275   verifyFormat("void f() {\n"
10276                "  for (const int &v : Values) {\n"
10277                "  }\n"
10278                "}");
10279   verifyFormat("for (int i = a * a; i < 10; ++i) {\n}");
10280   verifyFormat("for (int i = 0; i < a * a; ++i) {\n}");
10281   verifyGoogleFormat("for (int i = 0; i * 2 < z; i *= 2) {\n}");
10282 
10283   verifyFormat("#define A (!a * b)");
10284   verifyFormat("#define MACRO     \\\n"
10285                "  int *i = a * b; \\\n"
10286                "  void f(a *b);",
10287                getLLVMStyleWithColumns(19));
10288 
10289   verifyIndependentOfContext("A = new SomeType *[Length];");
10290   verifyIndependentOfContext("A = new SomeType *[Length]();");
10291   verifyIndependentOfContext("T **t = new T *;");
10292   verifyIndependentOfContext("T **t = new T *();");
10293   verifyGoogleFormat("A = new SomeType*[Length]();");
10294   verifyGoogleFormat("A = new SomeType*[Length];");
10295   verifyGoogleFormat("T** t = new T*;");
10296   verifyGoogleFormat("T** t = new T*();");
10297 
10298   verifyFormat("STATIC_ASSERT((a & b) == 0);");
10299   verifyFormat("STATIC_ASSERT(0 == (a & b));");
10300   verifyFormat("template <bool a, bool b> "
10301                "typename t::if<x && y>::type f() {}");
10302   verifyFormat("template <int *y> f() {}");
10303   verifyFormat("vector<int *> v;");
10304   verifyFormat("vector<int *const> v;");
10305   verifyFormat("vector<int *const **const *> v;");
10306   verifyFormat("vector<int *volatile> v;");
10307   verifyFormat("vector<a *_Nonnull> v;");
10308   verifyFormat("vector<a *_Nullable> v;");
10309   verifyFormat("vector<a *_Null_unspecified> v;");
10310   verifyFormat("vector<a *__ptr32> v;");
10311   verifyFormat("vector<a *__ptr64> v;");
10312   verifyFormat("vector<a *__capability> v;");
10313   FormatStyle TypeMacros = getLLVMStyle();
10314   TypeMacros.TypenameMacros = {"LIST"};
10315   verifyFormat("vector<LIST(uint64_t)> v;", TypeMacros);
10316   verifyFormat("vector<LIST(uint64_t) *> v;", TypeMacros);
10317   verifyFormat("vector<LIST(uint64_t) **> v;", TypeMacros);
10318   verifyFormat("vector<LIST(uint64_t) *attr> v;", TypeMacros);
10319   verifyFormat("vector<A(uint64_t) * attr> v;", TypeMacros); // multiplication
10320 
10321   FormatStyle CustomQualifier = getLLVMStyle();
10322   // Add identifiers that should not be parsed as a qualifier by default.
10323   CustomQualifier.AttributeMacros.push_back("__my_qualifier");
10324   CustomQualifier.AttributeMacros.push_back("_My_qualifier");
10325   CustomQualifier.AttributeMacros.push_back("my_other_qualifier");
10326   verifyFormat("vector<a * __my_qualifier> parse_as_multiply;");
10327   verifyFormat("vector<a *__my_qualifier> v;", CustomQualifier);
10328   verifyFormat("vector<a * _My_qualifier> parse_as_multiply;");
10329   verifyFormat("vector<a *_My_qualifier> v;", CustomQualifier);
10330   verifyFormat("vector<a * my_other_qualifier> parse_as_multiply;");
10331   verifyFormat("vector<a *my_other_qualifier> v;", CustomQualifier);
10332   verifyFormat("vector<a * _NotAQualifier> v;");
10333   verifyFormat("vector<a * __not_a_qualifier> v;");
10334   verifyFormat("vector<a * b> v;");
10335   verifyFormat("foo<b && false>();");
10336   verifyFormat("foo<b & 1>();");
10337   verifyFormat("foo<b & (1)>();");
10338   verifyFormat("foo<b & (~0)>();");
10339   verifyFormat("foo<b & (true)>();");
10340   verifyFormat("foo<b & ((1))>();");
10341   verifyFormat("foo<b & (/*comment*/ 1)>();");
10342   verifyFormat("decltype(*::std::declval<const T &>()) void F();");
10343   verifyFormat("typeof(*::std::declval<const T &>()) void F();");
10344   verifyFormat("_Atomic(*::std::declval<const T &>()) void F();");
10345   verifyFormat("__underlying_type(*::std::declval<const T &>()) void F();");
10346   verifyFormat(
10347       "template <class T, class = typename std::enable_if<\n"
10348       "                       std::is_integral<T>::value &&\n"
10349       "                       (sizeof(T) > 1 || sizeof(T) < 8)>::type>\n"
10350       "void F();",
10351       getLLVMStyleWithColumns(70));
10352   verifyFormat("template <class T,\n"
10353                "          class = typename std::enable_if<\n"
10354                "              std::is_integral<T>::value &&\n"
10355                "              (sizeof(T) > 1 || sizeof(T) < 8)>::type,\n"
10356                "          class U>\n"
10357                "void F();",
10358                getLLVMStyleWithColumns(70));
10359   verifyFormat(
10360       "template <class T,\n"
10361       "          class = typename ::std::enable_if<\n"
10362       "              ::std::is_array<T>{} && ::std::is_array<T>{}>::type>\n"
10363       "void F();",
10364       getGoogleStyleWithColumns(68));
10365 
10366   verifyIndependentOfContext("MACRO(int *i);");
10367   verifyIndependentOfContext("MACRO(auto *a);");
10368   verifyIndependentOfContext("MACRO(const A *a);");
10369   verifyIndependentOfContext("MACRO(_Atomic(A) *a);");
10370   verifyIndependentOfContext("MACRO(decltype(A) *a);");
10371   verifyIndependentOfContext("MACRO(typeof(A) *a);");
10372   verifyIndependentOfContext("MACRO(__underlying_type(A) *a);");
10373   verifyIndependentOfContext("MACRO(A *const a);");
10374   verifyIndependentOfContext("MACRO(A *restrict a);");
10375   verifyIndependentOfContext("MACRO(A *__restrict__ a);");
10376   verifyIndependentOfContext("MACRO(A *__restrict a);");
10377   verifyIndependentOfContext("MACRO(A *volatile a);");
10378   verifyIndependentOfContext("MACRO(A *__volatile a);");
10379   verifyIndependentOfContext("MACRO(A *__volatile__ a);");
10380   verifyIndependentOfContext("MACRO(A *_Nonnull a);");
10381   verifyIndependentOfContext("MACRO(A *_Nullable a);");
10382   verifyIndependentOfContext("MACRO(A *_Null_unspecified a);");
10383   verifyIndependentOfContext("MACRO(A *__attribute__((foo)) a);");
10384   verifyIndependentOfContext("MACRO(A *__attribute((foo)) a);");
10385   verifyIndependentOfContext("MACRO(A *[[clang::attr]] a);");
10386   verifyIndependentOfContext("MACRO(A *[[clang::attr(\"foo\")]] a);");
10387   verifyIndependentOfContext("MACRO(A *__ptr32 a);");
10388   verifyIndependentOfContext("MACRO(A *__ptr64 a);");
10389   verifyIndependentOfContext("MACRO(A *__capability);");
10390   verifyIndependentOfContext("MACRO(A &__capability);");
10391   verifyFormat("MACRO(A *__my_qualifier);");               // type declaration
10392   verifyFormat("void f() { MACRO(A * __my_qualifier); }"); // multiplication
10393   // If we add __my_qualifier to AttributeMacros it should always be parsed as
10394   // a type declaration:
10395   verifyFormat("MACRO(A *__my_qualifier);", CustomQualifier);
10396   verifyFormat("void f() { MACRO(A *__my_qualifier); }", CustomQualifier);
10397   // Also check that TypenameMacros prevents parsing it as multiplication:
10398   verifyIndependentOfContext("MACRO(LIST(uint64_t) * a);"); // multiplication
10399   verifyIndependentOfContext("MACRO(LIST(uint64_t) *a);", TypeMacros); // type
10400 
10401   verifyIndependentOfContext("MACRO('0' <= c && c <= '9');");
10402   verifyFormat("void f() { f(float{1}, a * a); }");
10403   verifyFormat("void f() { f(float(1), a * a); }");
10404 
10405   verifyFormat("f((void (*)(int))g);");
10406   verifyFormat("f((void (&)(int))g);");
10407   verifyFormat("f((void (^)(int))g);");
10408 
10409   // FIXME: Is there a way to make this work?
10410   // verifyIndependentOfContext("MACRO(A *a);");
10411   verifyFormat("MACRO(A &B);");
10412   verifyFormat("MACRO(A *B);");
10413   verifyFormat("void f() { MACRO(A * B); }");
10414   verifyFormat("void f() { MACRO(A & B); }");
10415 
10416   // This lambda was mis-formatted after D88956 (treating it as a binop):
10417   verifyFormat("auto x = [](const decltype(x) &ptr) {};");
10418   verifyFormat("auto x = [](const decltype(x) *ptr) {};");
10419   verifyFormat("#define lambda [](const decltype(x) &ptr) {}");
10420   verifyFormat("#define lambda [](const decltype(x) *ptr) {}");
10421 
10422   verifyFormat("DatumHandle const *operator->() const { return input_; }");
10423   verifyFormat("return options != nullptr && operator==(*options);");
10424 
10425   EXPECT_EQ("#define OP(x)                                    \\\n"
10426             "  ostream &operator<<(ostream &s, const A &a) {  \\\n"
10427             "    return s << a.DebugString();                 \\\n"
10428             "  }",
10429             format("#define OP(x) \\\n"
10430                    "  ostream &operator<<(ostream &s, const A &a) { \\\n"
10431                    "    return s << a.DebugString(); \\\n"
10432                    "  }",
10433                    getLLVMStyleWithColumns(50)));
10434 
10435   // FIXME: We cannot handle this case yet; we might be able to figure out that
10436   // foo<x> d > v; doesn't make sense.
10437   verifyFormat("foo<a<b && c> d> v;");
10438 
10439   FormatStyle PointerMiddle = getLLVMStyle();
10440   PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle;
10441   verifyFormat("delete *x;", PointerMiddle);
10442   verifyFormat("int * x;", PointerMiddle);
10443   verifyFormat("int *[] x;", PointerMiddle);
10444   verifyFormat("template <int * y> f() {}", PointerMiddle);
10445   verifyFormat("int * f(int * a) {}", PointerMiddle);
10446   verifyFormat("int main(int argc, char ** argv) {}", PointerMiddle);
10447   verifyFormat("Test::Test(int b) : a(b * b) {}", PointerMiddle);
10448   verifyFormat("A<int *> a;", PointerMiddle);
10449   verifyFormat("A<int **> a;", PointerMiddle);
10450   verifyFormat("A<int *, int *> a;", PointerMiddle);
10451   verifyFormat("A<int *[]> a;", PointerMiddle);
10452   verifyFormat("A = new SomeType *[Length]();", PointerMiddle);
10453   verifyFormat("A = new SomeType *[Length];", PointerMiddle);
10454   verifyFormat("T ** t = new T *;", PointerMiddle);
10455 
10456   // Member function reference qualifiers aren't binary operators.
10457   verifyFormat("string // break\n"
10458                "operator()() & {}");
10459   verifyFormat("string // break\n"
10460                "operator()() && {}");
10461   verifyGoogleFormat("template <typename T>\n"
10462                      "auto x() & -> int {}");
10463 
10464   // Should be binary operators when used as an argument expression (overloaded
10465   // operator invoked as a member function).
10466   verifyFormat("void f() { a.operator()(a * a); }");
10467   verifyFormat("void f() { a->operator()(a & a); }");
10468   verifyFormat("void f() { a.operator()(*a & *a); }");
10469   verifyFormat("void f() { a->operator()(*a * *a); }");
10470 
10471   verifyFormat("int operator()(T (&&)[N]) { return 1; }");
10472   verifyFormat("int operator()(T (&)[N]) { return 0; }");
10473 }
10474 
10475 TEST_F(FormatTest, UnderstandsAttributes) {
10476   verifyFormat("SomeType s __attribute__((unused)) (InitValue);");
10477   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((unused))\n"
10478                "aaaaaaaaaaaaaaaaaaaaaaa(int i);");
10479   verifyFormat("__attribute__((nodebug)) ::qualified_type f();");
10480   FormatStyle AfterType = getLLVMStyle();
10481   AfterType.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
10482   verifyFormat("__attribute__((nodebug)) void\n"
10483                "foo() {}\n",
10484                AfterType);
10485   verifyFormat("__unused void\n"
10486                "foo() {}",
10487                AfterType);
10488 
10489   FormatStyle CustomAttrs = getLLVMStyle();
10490   CustomAttrs.AttributeMacros.push_back("__unused");
10491   CustomAttrs.AttributeMacros.push_back("__attr1");
10492   CustomAttrs.AttributeMacros.push_back("__attr2");
10493   CustomAttrs.AttributeMacros.push_back("no_underscore_attr");
10494   verifyFormat("vector<SomeType *__attribute((foo))> v;");
10495   verifyFormat("vector<SomeType *__attribute__((foo))> v;");
10496   verifyFormat("vector<SomeType * __not_attribute__((foo))> v;");
10497   // Check that it is parsed as a multiplication without AttributeMacros and
10498   // as a pointer qualifier when we add __attr1/__attr2 to AttributeMacros.
10499   verifyFormat("vector<SomeType * __attr1> v;");
10500   verifyFormat("vector<SomeType __attr1 *> v;");
10501   verifyFormat("vector<SomeType __attr1 *const> v;");
10502   verifyFormat("vector<SomeType __attr1 * __attr2> v;");
10503   verifyFormat("vector<SomeType *__attr1> v;", CustomAttrs);
10504   verifyFormat("vector<SomeType *__attr2> v;", CustomAttrs);
10505   verifyFormat("vector<SomeType *no_underscore_attr> v;", CustomAttrs);
10506   verifyFormat("vector<SomeType __attr1 *> v;", CustomAttrs);
10507   verifyFormat("vector<SomeType __attr1 *const> v;", CustomAttrs);
10508   verifyFormat("vector<SomeType __attr1 *__attr2> v;", CustomAttrs);
10509   verifyFormat("vector<SomeType __attr1 *no_underscore_attr> v;", CustomAttrs);
10510 
10511   // Check that these are not parsed as function declarations:
10512   CustomAttrs.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
10513   CustomAttrs.BreakBeforeBraces = FormatStyle::BS_Allman;
10514   verifyFormat("SomeType s(InitValue);", CustomAttrs);
10515   verifyFormat("SomeType s{InitValue};", CustomAttrs);
10516   verifyFormat("SomeType *__unused s(InitValue);", CustomAttrs);
10517   verifyFormat("SomeType *__unused s{InitValue};", CustomAttrs);
10518   verifyFormat("SomeType s __unused(InitValue);", CustomAttrs);
10519   verifyFormat("SomeType s __unused{InitValue};", CustomAttrs);
10520   verifyFormat("SomeType *__capability s(InitValue);", CustomAttrs);
10521   verifyFormat("SomeType *__capability s{InitValue};", CustomAttrs);
10522 }
10523 
10524 TEST_F(FormatTest, UnderstandsPointerQualifiersInCast) {
10525   // Check that qualifiers on pointers don't break parsing of casts.
10526   verifyFormat("x = (foo *const)*v;");
10527   verifyFormat("x = (foo *volatile)*v;");
10528   verifyFormat("x = (foo *restrict)*v;");
10529   verifyFormat("x = (foo *__attribute__((foo)))*v;");
10530   verifyFormat("x = (foo *_Nonnull)*v;");
10531   verifyFormat("x = (foo *_Nullable)*v;");
10532   verifyFormat("x = (foo *_Null_unspecified)*v;");
10533   verifyFormat("x = (foo *_Nonnull)*v;");
10534   verifyFormat("x = (foo *[[clang::attr]])*v;");
10535   verifyFormat("x = (foo *[[clang::attr(\"foo\")]])*v;");
10536   verifyFormat("x = (foo *__ptr32)*v;");
10537   verifyFormat("x = (foo *__ptr64)*v;");
10538   verifyFormat("x = (foo *__capability)*v;");
10539 
10540   // Check that we handle multiple trailing qualifiers and skip them all to
10541   // determine that the expression is a cast to a pointer type.
10542   FormatStyle LongPointerRight = getLLVMStyleWithColumns(999);
10543   FormatStyle LongPointerLeft = getLLVMStyleWithColumns(999);
10544   LongPointerLeft.PointerAlignment = FormatStyle::PAS_Left;
10545   StringRef AllQualifiers =
10546       "const volatile restrict __attribute__((foo)) _Nonnull _Null_unspecified "
10547       "_Nonnull [[clang::attr]] __ptr32 __ptr64 __capability";
10548   verifyFormat(("x = (foo *" + AllQualifiers + ")*v;").str(), LongPointerRight);
10549   verifyFormat(("x = (foo* " + AllQualifiers + ")*v;").str(), LongPointerLeft);
10550 
10551   // Also check that address-of is not parsed as a binary bitwise-and:
10552   verifyFormat("x = (foo *const)&v;");
10553   verifyFormat(("x = (foo *" + AllQualifiers + ")&v;").str(), LongPointerRight);
10554   verifyFormat(("x = (foo* " + AllQualifiers + ")&v;").str(), LongPointerLeft);
10555 
10556   // Check custom qualifiers:
10557   FormatStyle CustomQualifier = getLLVMStyleWithColumns(999);
10558   CustomQualifier.AttributeMacros.push_back("__my_qualifier");
10559   verifyFormat("x = (foo * __my_qualifier) * v;"); // not parsed as qualifier.
10560   verifyFormat("x = (foo *__my_qualifier)*v;", CustomQualifier);
10561   verifyFormat(("x = (foo *" + AllQualifiers + " __my_qualifier)*v;").str(),
10562                CustomQualifier);
10563   verifyFormat(("x = (foo *" + AllQualifiers + " __my_qualifier)&v;").str(),
10564                CustomQualifier);
10565 
10566   // Check that unknown identifiers result in binary operator parsing:
10567   verifyFormat("x = (foo * __unknown_qualifier) * v;");
10568   verifyFormat("x = (foo * __unknown_qualifier) & v;");
10569 }
10570 
10571 TEST_F(FormatTest, UnderstandsSquareAttributes) {
10572   verifyFormat("SomeType s [[unused]] (InitValue);");
10573   verifyFormat("SomeType s [[gnu::unused]] (InitValue);");
10574   verifyFormat("SomeType s [[using gnu: unused]] (InitValue);");
10575   verifyFormat("[[gsl::suppress(\"clang-tidy-check-name\")]] void f() {}");
10576   verifyFormat("void f() [[deprecated(\"so sorry\")]];");
10577   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
10578                "    [[unused]] aaaaaaaaaaaaaaaaaaaaaaa(int i);");
10579   verifyFormat("[[nodiscard]] bool f() { return false; }");
10580   verifyFormat("class [[nodiscard]] f {\npublic:\n  f() {}\n}");
10581   verifyFormat("class [[deprecated(\"so sorry\")]] f {\npublic:\n  f() {}\n}");
10582   verifyFormat("class [[gnu::unused]] f {\npublic:\n  f() {}\n}");
10583   verifyFormat("[[nodiscard]] ::qualified_type f();");
10584 
10585   // Make sure we do not mistake attributes for array subscripts.
10586   verifyFormat("int a() {}\n"
10587                "[[unused]] int b() {}\n");
10588   verifyFormat("NSArray *arr;\n"
10589                "arr[[Foo() bar]];");
10590 
10591   // On the other hand, we still need to correctly find array subscripts.
10592   verifyFormat("int a = std::vector<int>{1, 2, 3}[0];");
10593 
10594   // Make sure that we do not mistake Objective-C method inside array literals
10595   // as attributes, even if those method names are also keywords.
10596   verifyFormat("@[ [foo bar] ];");
10597   verifyFormat("@[ [NSArray class] ];");
10598   verifyFormat("@[ [foo enum] ];");
10599 
10600   verifyFormat("template <typename T> [[nodiscard]] int a() { return 1; }");
10601 
10602   // Make sure we do not parse attributes as lambda introducers.
10603   FormatStyle MultiLineFunctions = getLLVMStyle();
10604   MultiLineFunctions.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
10605   verifyFormat("[[unused]] int b() {\n"
10606                "  return 42;\n"
10607                "}\n",
10608                MultiLineFunctions);
10609 }
10610 
10611 TEST_F(FormatTest, AttributeClass) {
10612   FormatStyle Style = getChromiumStyle(FormatStyle::LK_Cpp);
10613   verifyFormat("class S {\n"
10614                "  S(S&&) = default;\n"
10615                "};",
10616                Style);
10617   verifyFormat("class [[nodiscard]] S {\n"
10618                "  S(S&&) = default;\n"
10619                "};",
10620                Style);
10621   verifyFormat("class __attribute((maybeunused)) S {\n"
10622                "  S(S&&) = default;\n"
10623                "};",
10624                Style);
10625   verifyFormat("struct S {\n"
10626                "  S(S&&) = default;\n"
10627                "};",
10628                Style);
10629   verifyFormat("struct [[nodiscard]] S {\n"
10630                "  S(S&&) = default;\n"
10631                "};",
10632                Style);
10633 }
10634 
10635 TEST_F(FormatTest, AttributesAfterMacro) {
10636   FormatStyle Style = getLLVMStyle();
10637   verifyFormat("MACRO;\n"
10638                "__attribute__((maybe_unused)) int foo() {\n"
10639                "  //...\n"
10640                "}");
10641 
10642   verifyFormat("MACRO;\n"
10643                "[[nodiscard]] int foo() {\n"
10644                "  //...\n"
10645                "}");
10646 
10647   EXPECT_EQ("MACRO\n\n"
10648             "__attribute__((maybe_unused)) int foo() {\n"
10649             "  //...\n"
10650             "}",
10651             format("MACRO\n\n"
10652                    "__attribute__((maybe_unused)) int foo() {\n"
10653                    "  //...\n"
10654                    "}"));
10655 
10656   EXPECT_EQ("MACRO\n\n"
10657             "[[nodiscard]] int foo() {\n"
10658             "  //...\n"
10659             "}",
10660             format("MACRO\n\n"
10661                    "[[nodiscard]] int foo() {\n"
10662                    "  //...\n"
10663                    "}"));
10664 }
10665 
10666 TEST_F(FormatTest, AttributePenaltyBreaking) {
10667   FormatStyle Style = getLLVMStyle();
10668   verifyFormat("void ABCDEFGH::ABCDEFGHIJKLMN(\n"
10669                "    [[maybe_unused]] const shared_ptr<ALongTypeName> &C d) {}",
10670                Style);
10671   verifyFormat("void ABCDEFGH::ABCDEFGHIJK(\n"
10672                "    [[maybe_unused]] const shared_ptr<ALongTypeName> &C d) {}",
10673                Style);
10674   verifyFormat("void ABCDEFGH::ABCDEFGH([[maybe_unused]] const "
10675                "shared_ptr<ALongTypeName> &C d) {\n}",
10676                Style);
10677 }
10678 
10679 TEST_F(FormatTest, UnderstandsEllipsis) {
10680   FormatStyle Style = getLLVMStyle();
10681   verifyFormat("int printf(const char *fmt, ...);");
10682   verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }");
10683   verifyFormat("template <class... Ts> void Foo(Ts *...ts) {}");
10684 
10685   verifyFormat("template <int *...PP> a;", Style);
10686 
10687   Style.PointerAlignment = FormatStyle::PAS_Left;
10688   verifyFormat("template <class... Ts> void Foo(Ts*... ts) {}", Style);
10689 
10690   verifyFormat("template <int*... PP> a;", Style);
10691 
10692   Style.PointerAlignment = FormatStyle::PAS_Middle;
10693   verifyFormat("template <int *... PP> a;", Style);
10694 }
10695 
10696 TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) {
10697   EXPECT_EQ("int *a;\n"
10698             "int *a;\n"
10699             "int *a;",
10700             format("int *a;\n"
10701                    "int* a;\n"
10702                    "int *a;",
10703                    getGoogleStyle()));
10704   EXPECT_EQ("int* a;\n"
10705             "int* a;\n"
10706             "int* a;",
10707             format("int* a;\n"
10708                    "int* a;\n"
10709                    "int *a;",
10710                    getGoogleStyle()));
10711   EXPECT_EQ("int *a;\n"
10712             "int *a;\n"
10713             "int *a;",
10714             format("int *a;\n"
10715                    "int * a;\n"
10716                    "int *  a;",
10717                    getGoogleStyle()));
10718   EXPECT_EQ("auto x = [] {\n"
10719             "  int *a;\n"
10720             "  int *a;\n"
10721             "  int *a;\n"
10722             "};",
10723             format("auto x=[]{int *a;\n"
10724                    "int * a;\n"
10725                    "int *  a;};",
10726                    getGoogleStyle()));
10727 }
10728 
10729 TEST_F(FormatTest, UnderstandsRvalueReferences) {
10730   verifyFormat("int f(int &&a) {}");
10731   verifyFormat("int f(int a, char &&b) {}");
10732   verifyFormat("void f() { int &&a = b; }");
10733   verifyGoogleFormat("int f(int a, char&& b) {}");
10734   verifyGoogleFormat("void f() { int&& a = b; }");
10735 
10736   verifyIndependentOfContext("A<int &&> a;");
10737   verifyIndependentOfContext("A<int &&, int &&> a;");
10738   verifyGoogleFormat("A<int&&> a;");
10739   verifyGoogleFormat("A<int&&, int&&> a;");
10740 
10741   // Not rvalue references:
10742   verifyFormat("template <bool B, bool C> class A {\n"
10743                "  static_assert(B && C, \"Something is wrong\");\n"
10744                "};");
10745   verifyGoogleFormat("#define IF(a, b, c) if (a && (b == c))");
10746   verifyGoogleFormat("#define WHILE(a, b, c) while (a && (b == c))");
10747   verifyFormat("#define A(a, b) (a && b)");
10748 }
10749 
10750 TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) {
10751   verifyFormat("void f() {\n"
10752                "  x[aaaaaaaaa -\n"
10753                "    b] = 23;\n"
10754                "}",
10755                getLLVMStyleWithColumns(15));
10756 }
10757 
10758 TEST_F(FormatTest, FormatsCasts) {
10759   verifyFormat("Type *A = static_cast<Type *>(P);");
10760   verifyFormat("static_cast<Type *>(P);");
10761   verifyFormat("static_cast<Type &>(Fun)(Args);");
10762   verifyFormat("static_cast<Type &>(*Fun)(Args);");
10763   verifyFormat("if (static_cast<int>(A) + B >= 0)\n  ;");
10764   // Check that static_cast<...>(...) does not require the next token to be on
10765   // the same line.
10766   verifyFormat("some_loooong_output << something_something__ << "
10767                "static_cast<const void *>(R)\n"
10768                "                    << something;");
10769   verifyFormat("a = static_cast<Type &>(*Fun)(Args);");
10770   verifyFormat("const_cast<Type &>(*Fun)(Args);");
10771   verifyFormat("dynamic_cast<Type &>(*Fun)(Args);");
10772   verifyFormat("reinterpret_cast<Type &>(*Fun)(Args);");
10773   verifyFormat("Type *A = (Type *)P;");
10774   verifyFormat("Type *A = (vector<Type *, int *>)P;");
10775   verifyFormat("int a = (int)(2.0f);");
10776   verifyFormat("int a = (int)2.0f;");
10777   verifyFormat("x[(int32)y];");
10778   verifyFormat("x = (int32)y;");
10779   verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)");
10780   verifyFormat("int a = (int)*b;");
10781   verifyFormat("int a = (int)2.0f;");
10782   verifyFormat("int a = (int)~0;");
10783   verifyFormat("int a = (int)++a;");
10784   verifyFormat("int a = (int)sizeof(int);");
10785   verifyFormat("int a = (int)+2;");
10786   verifyFormat("my_int a = (my_int)2.0f;");
10787   verifyFormat("my_int a = (my_int)sizeof(int);");
10788   verifyFormat("return (my_int)aaa;");
10789   verifyFormat("#define x ((int)-1)");
10790   verifyFormat("#define LENGTH(x, y) (x) - (y) + 1");
10791   verifyFormat("#define p(q) ((int *)&q)");
10792   verifyFormat("fn(a)(b) + 1;");
10793 
10794   verifyFormat("void f() { my_int a = (my_int)*b; }");
10795   verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }");
10796   verifyFormat("my_int a = (my_int)~0;");
10797   verifyFormat("my_int a = (my_int)++a;");
10798   verifyFormat("my_int a = (my_int)-2;");
10799   verifyFormat("my_int a = (my_int)1;");
10800   verifyFormat("my_int a = (my_int *)1;");
10801   verifyFormat("my_int a = (const my_int)-1;");
10802   verifyFormat("my_int a = (const my_int *)-1;");
10803   verifyFormat("my_int a = (my_int)(my_int)-1;");
10804   verifyFormat("my_int a = (ns::my_int)-2;");
10805   verifyFormat("case (my_int)ONE:");
10806   verifyFormat("auto x = (X)this;");
10807   // Casts in Obj-C style calls used to not be recognized as such.
10808   verifyFormat("int a = [(type*)[((type*)val) arg] arg];", getGoogleStyle());
10809 
10810   // FIXME: single value wrapped with paren will be treated as cast.
10811   verifyFormat("void f(int i = (kValue)*kMask) {}");
10812 
10813   verifyFormat("{ (void)F; }");
10814 
10815   // Don't break after a cast's
10816   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
10817                "    (aaaaaaaaaaaaaaaaaaaaaaaaaa *)(aaaaaaaaaaaaaaaaaaaaaa +\n"
10818                "                                   bbbbbbbbbbbbbbbbbbbbbb);");
10819 
10820   verifyFormat("#define CONF_BOOL(x) (bool *)(void *)(x)");
10821   verifyFormat("#define CONF_BOOL(x) (bool *)(x)");
10822   verifyFormat("#define CONF_BOOL(x) (bool)(x)");
10823   verifyFormat("bool *y = (bool *)(void *)(x);");
10824   verifyFormat("#define CONF_BOOL(x) (bool *)(void *)(int)(x)");
10825   verifyFormat("bool *y = (bool *)(void *)(int)(x);");
10826   verifyFormat("#define CONF_BOOL(x) (bool *)(void *)(int)foo(x)");
10827   verifyFormat("bool *y = (bool *)(void *)(int)foo(x);");
10828 
10829   // These are not casts.
10830   verifyFormat("void f(int *) {}");
10831   verifyFormat("f(foo)->b;");
10832   verifyFormat("f(foo).b;");
10833   verifyFormat("f(foo)(b);");
10834   verifyFormat("f(foo)[b];");
10835   verifyFormat("[](foo) { return 4; }(bar);");
10836   verifyFormat("(*funptr)(foo)[4];");
10837   verifyFormat("funptrs[4](foo)[4];");
10838   verifyFormat("void f(int *);");
10839   verifyFormat("void f(int *) = 0;");
10840   verifyFormat("void f(SmallVector<int>) {}");
10841   verifyFormat("void f(SmallVector<int>);");
10842   verifyFormat("void f(SmallVector<int>) = 0;");
10843   verifyFormat("void f(int i = (kA * kB) & kMask) {}");
10844   verifyFormat("int a = sizeof(int) * b;");
10845   verifyFormat("int a = alignof(int) * b;", getGoogleStyle());
10846   verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;");
10847   verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");");
10848   verifyFormat("aaaaa &operator=(const aaaaa &) LLVM_DELETED_FUNCTION;");
10849 
10850   // These are not casts, but at some point were confused with casts.
10851   verifyFormat("virtual void foo(int *) override;");
10852   verifyFormat("virtual void foo(char &) const;");
10853   verifyFormat("virtual void foo(int *a, char *) const;");
10854   verifyFormat("int a = sizeof(int *) + b;");
10855   verifyFormat("int a = alignof(int *) + b;", getGoogleStyle());
10856   verifyFormat("bool b = f(g<int>) && c;");
10857   verifyFormat("typedef void (*f)(int i) func;");
10858   verifyFormat("void operator++(int) noexcept;");
10859   verifyFormat("void operator++(int &) noexcept;");
10860   verifyFormat("void operator delete(void *, std::size_t, const std::nothrow_t "
10861                "&) noexcept;");
10862   verifyFormat(
10863       "void operator delete(std::size_t, const std::nothrow_t &) noexcept;");
10864   verifyFormat("void operator delete(const std::nothrow_t &) noexcept;");
10865   verifyFormat("void operator delete(std::nothrow_t &) noexcept;");
10866   verifyFormat("void operator delete(nothrow_t &) noexcept;");
10867   verifyFormat("void operator delete(foo &) noexcept;");
10868   verifyFormat("void operator delete(foo) noexcept;");
10869   verifyFormat("void operator delete(int) noexcept;");
10870   verifyFormat("void operator delete(int &) noexcept;");
10871   verifyFormat("void operator delete(int &) volatile noexcept;");
10872   verifyFormat("void operator delete(int &) const");
10873   verifyFormat("void operator delete(int &) = default");
10874   verifyFormat("void operator delete(int &) = delete");
10875   verifyFormat("void operator delete(int &) [[noreturn]]");
10876   verifyFormat("void operator delete(int &) throw();");
10877   verifyFormat("void operator delete(int &) throw(int);");
10878   verifyFormat("auto operator delete(int &) -> int;");
10879   verifyFormat("auto operator delete(int &) override");
10880   verifyFormat("auto operator delete(int &) final");
10881 
10882   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n"
10883                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
10884   // FIXME: The indentation here is not ideal.
10885   verifyFormat(
10886       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
10887       "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)\n"
10888       "        [dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];");
10889 }
10890 
10891 TEST_F(FormatTest, FormatsFunctionTypes) {
10892   verifyFormat("A<bool()> a;");
10893   verifyFormat("A<SomeType()> a;");
10894   verifyFormat("A<void (*)(int, std::string)> a;");
10895   verifyFormat("A<void *(int)>;");
10896   verifyFormat("void *(*a)(int *, SomeType *);");
10897   verifyFormat("int (*func)(void *);");
10898   verifyFormat("void f() { int (*func)(void *); }");
10899   verifyFormat("template <class CallbackClass>\n"
10900                "using MyCallback = void (CallbackClass::*)(SomeObject *Data);");
10901 
10902   verifyGoogleFormat("A<void*(int*, SomeType*)>;");
10903   verifyGoogleFormat("void* (*a)(int);");
10904   verifyGoogleFormat(
10905       "template <class CallbackClass>\n"
10906       "using MyCallback = void (CallbackClass::*)(SomeObject* Data);");
10907 
10908   // Other constructs can look somewhat like function types:
10909   verifyFormat("A<sizeof(*x)> a;");
10910   verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)");
10911   verifyFormat("some_var = function(*some_pointer_var)[0];");
10912   verifyFormat("void f() { function(*some_pointer_var)[0] = 10; }");
10913   verifyFormat("int x = f(&h)();");
10914   verifyFormat("returnsFunction(&param1, &param2)(param);");
10915   verifyFormat("std::function<\n"
10916                "    LooooooooooongTemplatedType<\n"
10917                "        SomeType>*(\n"
10918                "        LooooooooooooooooongType type)>\n"
10919                "    function;",
10920                getGoogleStyleWithColumns(40));
10921 }
10922 
10923 TEST_F(FormatTest, FormatsPointersToArrayTypes) {
10924   verifyFormat("A (*foo_)[6];");
10925   verifyFormat("vector<int> (*foo_)[6];");
10926 }
10927 
10928 TEST_F(FormatTest, BreaksLongVariableDeclarations) {
10929   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
10930                "    LoooooooooooooooooooooooooooooooooooooooongVariable;");
10931   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType const\n"
10932                "    LoooooooooooooooooooooooooooooooooooooooongVariable;");
10933   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
10934                "    *LoooooooooooooooooooooooooooooooooooooooongVariable;");
10935 
10936   // Different ways of ()-initializiation.
10937   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
10938                "    LoooooooooooooooooooooooooooooooooooooooongVariable(1);");
10939   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
10940                "    LoooooooooooooooooooooooooooooooooooooooongVariable(a);");
10941   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
10942                "    LoooooooooooooooooooooooooooooooooooooooongVariable({});");
10943   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
10944                "    LoooooooooooooooooooooooooooooooooooooongVariable([A a]);");
10945 
10946   // Lambdas should not confuse the variable declaration heuristic.
10947   verifyFormat("LooooooooooooooooongType\n"
10948                "    variable(nullptr, [](A *a) {});",
10949                getLLVMStyleWithColumns(40));
10950 }
10951 
10952 TEST_F(FormatTest, BreaksLongDeclarations) {
10953   verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n"
10954                "    AnotherNameForTheLongType;");
10955   verifyFormat("typedef LongTemplateType<aaaaaaaaaaaaaaaaaaa()>\n"
10956                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
10957   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
10958                "LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
10959   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType *\n"
10960                "LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
10961   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
10962                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
10963   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType MACRO\n"
10964                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
10965   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType const\n"
10966                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
10967   verifyFormat("decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n"
10968                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
10969   verifyFormat("typeof(LoooooooooooooooooooooooooooooooooooooooooongName)\n"
10970                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
10971   verifyFormat("_Atomic(LooooooooooooooooooooooooooooooooooooooooongName)\n"
10972                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
10973   verifyFormat("__underlying_type(LooooooooooooooooooooooooooooooongName)\n"
10974                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
10975   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
10976                "LooooooooooooooooooooooooooongFunctionDeclaration(T... t);");
10977   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
10978                "LooooooooooooooooooooooooooongFunctionDeclaration(T /*t*/) {}");
10979   FormatStyle Indented = getLLVMStyle();
10980   Indented.IndentWrappedFunctionNames = true;
10981   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
10982                "    LoooooooooooooooooooooooooooooooongFunctionDeclaration();",
10983                Indented);
10984   verifyFormat(
10985       "LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
10986       "    LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
10987       Indented);
10988   verifyFormat(
10989       "LoooooooooooooooooooooooooooooooooooooooongReturnType const\n"
10990       "    LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
10991       Indented);
10992   verifyFormat(
10993       "decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n"
10994       "    LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
10995       Indented);
10996 
10997   // FIXME: Without the comment, this breaks after "(".
10998   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType  // break\n"
10999                "    (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();",
11000                getGoogleStyle());
11001 
11002   verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n"
11003                "                  int LoooooooooooooooooooongParam2) {}");
11004   verifyFormat(
11005       "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n"
11006       "                                   SourceLocation L, IdentifierIn *II,\n"
11007       "                                   Type *T) {}");
11008   verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n"
11009                "ReallyReaaallyLongFunctionName(\n"
11010                "    const std::string &SomeParameter,\n"
11011                "    const SomeType<string, SomeOtherTemplateParameter>\n"
11012                "        &ReallyReallyLongParameterName,\n"
11013                "    const SomeType<string, SomeOtherTemplateParameter>\n"
11014                "        &AnotherLongParameterName) {}");
11015   verifyFormat("template <typename A>\n"
11016                "SomeLoooooooooooooooooooooongType<\n"
11017                "    typename some_namespace::SomeOtherType<A>::Type>\n"
11018                "Function() {}");
11019 
11020   verifyGoogleFormat(
11021       "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n"
11022       "    aaaaaaaaaaaaaaaaaaaaaaa;");
11023   verifyGoogleFormat(
11024       "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n"
11025       "                                   SourceLocation L) {}");
11026   verifyGoogleFormat(
11027       "some_namespace::LongReturnType\n"
11028       "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n"
11029       "    int first_long_parameter, int second_parameter) {}");
11030 
11031   verifyGoogleFormat("template <typename T>\n"
11032                      "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n"
11033                      "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}");
11034   verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
11035                      "                   int aaaaaaaaaaaaaaaaaaaaaaa);");
11036 
11037   verifyFormat("typedef size_t (*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n"
11038                "    const aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11039                "        *aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
11040   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
11041                "    vector<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n"
11042                "        aaaaaaaaaaaaaaaaaaaaaaaa);");
11043   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
11044                "    vector<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
11045                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>>\n"
11046                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
11047 
11048   verifyFormat("template <typename T> // Templates on own line.\n"
11049                "static int            // Some comment.\n"
11050                "MyFunction(int a);",
11051                getLLVMStyle());
11052 }
11053 
11054 TEST_F(FormatTest, FormatsAccessModifiers) {
11055   FormatStyle Style = getLLVMStyle();
11056   EXPECT_EQ(Style.EmptyLineBeforeAccessModifier,
11057             FormatStyle::ELBAMS_LogicalBlock);
11058   verifyFormat("struct foo {\n"
11059                "private:\n"
11060                "  void f() {}\n"
11061                "\n"
11062                "private:\n"
11063                "  int i;\n"
11064                "\n"
11065                "protected:\n"
11066                "  int j;\n"
11067                "};\n",
11068                Style);
11069   verifyFormat("struct foo {\n"
11070                "private:\n"
11071                "  void f() {}\n"
11072                "\n"
11073                "private:\n"
11074                "  int i;\n"
11075                "\n"
11076                "protected:\n"
11077                "  int j;\n"
11078                "};\n",
11079                "struct foo {\n"
11080                "private:\n"
11081                "  void f() {}\n"
11082                "private:\n"
11083                "  int i;\n"
11084                "protected:\n"
11085                "  int j;\n"
11086                "};\n",
11087                Style);
11088   verifyFormat("struct foo { /* comment */\n"
11089                "private:\n"
11090                "  int i;\n"
11091                "  // comment\n"
11092                "private:\n"
11093                "  int j;\n"
11094                "};\n",
11095                Style);
11096   verifyFormat("struct foo {\n"
11097                "#ifdef FOO\n"
11098                "#endif\n"
11099                "private:\n"
11100                "  int i;\n"
11101                "#ifdef FOO\n"
11102                "private:\n"
11103                "#endif\n"
11104                "  int j;\n"
11105                "};\n",
11106                Style);
11107   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Never;
11108   verifyFormat("struct foo {\n"
11109                "private:\n"
11110                "  void f() {}\n"
11111                "private:\n"
11112                "  int i;\n"
11113                "protected:\n"
11114                "  int j;\n"
11115                "};\n",
11116                Style);
11117   verifyFormat("struct foo {\n"
11118                "private:\n"
11119                "  void f() {}\n"
11120                "private:\n"
11121                "  int i;\n"
11122                "protected:\n"
11123                "  int j;\n"
11124                "};\n",
11125                "struct foo {\n"
11126                "\n"
11127                "private:\n"
11128                "  void f() {}\n"
11129                "\n"
11130                "private:\n"
11131                "  int i;\n"
11132                "\n"
11133                "protected:\n"
11134                "  int j;\n"
11135                "};\n",
11136                Style);
11137   verifyFormat("struct foo { /* comment */\n"
11138                "private:\n"
11139                "  int i;\n"
11140                "  // comment\n"
11141                "private:\n"
11142                "  int j;\n"
11143                "};\n",
11144                "struct foo { /* comment */\n"
11145                "\n"
11146                "private:\n"
11147                "  int i;\n"
11148                "  // comment\n"
11149                "\n"
11150                "private:\n"
11151                "  int j;\n"
11152                "};\n",
11153                Style);
11154   verifyFormat("struct foo {\n"
11155                "#ifdef FOO\n"
11156                "#endif\n"
11157                "private:\n"
11158                "  int i;\n"
11159                "#ifdef FOO\n"
11160                "private:\n"
11161                "#endif\n"
11162                "  int j;\n"
11163                "};\n",
11164                "struct foo {\n"
11165                "#ifdef FOO\n"
11166                "#endif\n"
11167                "\n"
11168                "private:\n"
11169                "  int i;\n"
11170                "#ifdef FOO\n"
11171                "\n"
11172                "private:\n"
11173                "#endif\n"
11174                "  int j;\n"
11175                "};\n",
11176                Style);
11177   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Always;
11178   verifyFormat("struct foo {\n"
11179                "private:\n"
11180                "  void f() {}\n"
11181                "\n"
11182                "private:\n"
11183                "  int i;\n"
11184                "\n"
11185                "protected:\n"
11186                "  int j;\n"
11187                "};\n",
11188                Style);
11189   verifyFormat("struct foo {\n"
11190                "private:\n"
11191                "  void f() {}\n"
11192                "\n"
11193                "private:\n"
11194                "  int i;\n"
11195                "\n"
11196                "protected:\n"
11197                "  int j;\n"
11198                "};\n",
11199                "struct foo {\n"
11200                "private:\n"
11201                "  void f() {}\n"
11202                "private:\n"
11203                "  int i;\n"
11204                "protected:\n"
11205                "  int j;\n"
11206                "};\n",
11207                Style);
11208   verifyFormat("struct foo { /* comment */\n"
11209                "private:\n"
11210                "  int i;\n"
11211                "  // comment\n"
11212                "\n"
11213                "private:\n"
11214                "  int j;\n"
11215                "};\n",
11216                "struct foo { /* comment */\n"
11217                "private:\n"
11218                "  int i;\n"
11219                "  // comment\n"
11220                "\n"
11221                "private:\n"
11222                "  int j;\n"
11223                "};\n",
11224                Style);
11225   verifyFormat("struct foo {\n"
11226                "#ifdef FOO\n"
11227                "#endif\n"
11228                "\n"
11229                "private:\n"
11230                "  int i;\n"
11231                "#ifdef FOO\n"
11232                "\n"
11233                "private:\n"
11234                "#endif\n"
11235                "  int j;\n"
11236                "};\n",
11237                "struct foo {\n"
11238                "#ifdef FOO\n"
11239                "#endif\n"
11240                "private:\n"
11241                "  int i;\n"
11242                "#ifdef FOO\n"
11243                "private:\n"
11244                "#endif\n"
11245                "  int j;\n"
11246                "};\n",
11247                Style);
11248   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Leave;
11249   EXPECT_EQ("struct foo {\n"
11250             "\n"
11251             "private:\n"
11252             "  void f() {}\n"
11253             "\n"
11254             "private:\n"
11255             "  int i;\n"
11256             "\n"
11257             "protected:\n"
11258             "  int j;\n"
11259             "};\n",
11260             format("struct foo {\n"
11261                    "\n"
11262                    "private:\n"
11263                    "  void f() {}\n"
11264                    "\n"
11265                    "private:\n"
11266                    "  int i;\n"
11267                    "\n"
11268                    "protected:\n"
11269                    "  int j;\n"
11270                    "};\n",
11271                    Style));
11272   verifyFormat("struct foo {\n"
11273                "private:\n"
11274                "  void f() {}\n"
11275                "private:\n"
11276                "  int i;\n"
11277                "protected:\n"
11278                "  int j;\n"
11279                "};\n",
11280                Style);
11281   EXPECT_EQ("struct foo { /* comment */\n"
11282             "\n"
11283             "private:\n"
11284             "  int i;\n"
11285             "  // comment\n"
11286             "\n"
11287             "private:\n"
11288             "  int j;\n"
11289             "};\n",
11290             format("struct foo { /* comment */\n"
11291                    "\n"
11292                    "private:\n"
11293                    "  int i;\n"
11294                    "  // comment\n"
11295                    "\n"
11296                    "private:\n"
11297                    "  int j;\n"
11298                    "};\n",
11299                    Style));
11300   verifyFormat("struct foo { /* comment */\n"
11301                "private:\n"
11302                "  int i;\n"
11303                "  // comment\n"
11304                "private:\n"
11305                "  int j;\n"
11306                "};\n",
11307                Style);
11308   EXPECT_EQ("struct foo {\n"
11309             "#ifdef FOO\n"
11310             "#endif\n"
11311             "\n"
11312             "private:\n"
11313             "  int i;\n"
11314             "#ifdef FOO\n"
11315             "\n"
11316             "private:\n"
11317             "#endif\n"
11318             "  int j;\n"
11319             "};\n",
11320             format("struct foo {\n"
11321                    "#ifdef FOO\n"
11322                    "#endif\n"
11323                    "\n"
11324                    "private:\n"
11325                    "  int i;\n"
11326                    "#ifdef FOO\n"
11327                    "\n"
11328                    "private:\n"
11329                    "#endif\n"
11330                    "  int j;\n"
11331                    "};\n",
11332                    Style));
11333   verifyFormat("struct foo {\n"
11334                "#ifdef FOO\n"
11335                "#endif\n"
11336                "private:\n"
11337                "  int i;\n"
11338                "#ifdef FOO\n"
11339                "private:\n"
11340                "#endif\n"
11341                "  int j;\n"
11342                "};\n",
11343                Style);
11344 
11345   FormatStyle NoEmptyLines = getLLVMStyle();
11346   NoEmptyLines.MaxEmptyLinesToKeep = 0;
11347   verifyFormat("struct foo {\n"
11348                "private:\n"
11349                "  void f() {}\n"
11350                "\n"
11351                "private:\n"
11352                "  int i;\n"
11353                "\n"
11354                "public:\n"
11355                "protected:\n"
11356                "  int j;\n"
11357                "};\n",
11358                NoEmptyLines);
11359 
11360   NoEmptyLines.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Never;
11361   verifyFormat("struct foo {\n"
11362                "private:\n"
11363                "  void f() {}\n"
11364                "private:\n"
11365                "  int i;\n"
11366                "public:\n"
11367                "protected:\n"
11368                "  int j;\n"
11369                "};\n",
11370                NoEmptyLines);
11371 
11372   NoEmptyLines.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Always;
11373   verifyFormat("struct foo {\n"
11374                "private:\n"
11375                "  void f() {}\n"
11376                "\n"
11377                "private:\n"
11378                "  int i;\n"
11379                "\n"
11380                "public:\n"
11381                "\n"
11382                "protected:\n"
11383                "  int j;\n"
11384                "};\n",
11385                NoEmptyLines);
11386 }
11387 
11388 TEST_F(FormatTest, FormatsAfterAccessModifiers) {
11389 
11390   FormatStyle Style = getLLVMStyle();
11391   EXPECT_EQ(Style.EmptyLineAfterAccessModifier, FormatStyle::ELAAMS_Never);
11392   verifyFormat("struct foo {\n"
11393                "private:\n"
11394                "  void f() {}\n"
11395                "\n"
11396                "private:\n"
11397                "  int i;\n"
11398                "\n"
11399                "protected:\n"
11400                "  int j;\n"
11401                "};\n",
11402                Style);
11403 
11404   // Check if lines are removed.
11405   verifyFormat("struct foo {\n"
11406                "private:\n"
11407                "  void f() {}\n"
11408                "\n"
11409                "private:\n"
11410                "  int i;\n"
11411                "\n"
11412                "protected:\n"
11413                "  int j;\n"
11414                "};\n",
11415                "struct foo {\n"
11416                "private:\n"
11417                "\n"
11418                "  void f() {}\n"
11419                "\n"
11420                "private:\n"
11421                "\n"
11422                "  int i;\n"
11423                "\n"
11424                "protected:\n"
11425                "\n"
11426                "  int j;\n"
11427                "};\n",
11428                Style);
11429 
11430   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Always;
11431   verifyFormat("struct foo {\n"
11432                "private:\n"
11433                "\n"
11434                "  void f() {}\n"
11435                "\n"
11436                "private:\n"
11437                "\n"
11438                "  int i;\n"
11439                "\n"
11440                "protected:\n"
11441                "\n"
11442                "  int j;\n"
11443                "};\n",
11444                Style);
11445 
11446   // Check if lines are added.
11447   verifyFormat("struct foo {\n"
11448                "private:\n"
11449                "\n"
11450                "  void f() {}\n"
11451                "\n"
11452                "private:\n"
11453                "\n"
11454                "  int i;\n"
11455                "\n"
11456                "protected:\n"
11457                "\n"
11458                "  int j;\n"
11459                "};\n",
11460                "struct foo {\n"
11461                "private:\n"
11462                "  void f() {}\n"
11463                "\n"
11464                "private:\n"
11465                "  int i;\n"
11466                "\n"
11467                "protected:\n"
11468                "  int j;\n"
11469                "};\n",
11470                Style);
11471 
11472   // Leave tests rely on the code layout, test::messUp can not be used.
11473   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Leave;
11474   Style.MaxEmptyLinesToKeep = 0u;
11475   verifyFormat("struct foo {\n"
11476                "private:\n"
11477                "  void f() {}\n"
11478                "\n"
11479                "private:\n"
11480                "  int i;\n"
11481                "\n"
11482                "protected:\n"
11483                "  int j;\n"
11484                "};\n",
11485                Style);
11486 
11487   // Check if MaxEmptyLinesToKeep is respected.
11488   EXPECT_EQ("struct foo {\n"
11489             "private:\n"
11490             "  void f() {}\n"
11491             "\n"
11492             "private:\n"
11493             "  int i;\n"
11494             "\n"
11495             "protected:\n"
11496             "  int j;\n"
11497             "};\n",
11498             format("struct foo {\n"
11499                    "private:\n"
11500                    "\n\n\n"
11501                    "  void f() {}\n"
11502                    "\n"
11503                    "private:\n"
11504                    "\n\n\n"
11505                    "  int i;\n"
11506                    "\n"
11507                    "protected:\n"
11508                    "\n\n\n"
11509                    "  int j;\n"
11510                    "};\n",
11511                    Style));
11512 
11513   Style.MaxEmptyLinesToKeep = 1u;
11514   EXPECT_EQ("struct foo {\n"
11515             "private:\n"
11516             "\n"
11517             "  void f() {}\n"
11518             "\n"
11519             "private:\n"
11520             "\n"
11521             "  int i;\n"
11522             "\n"
11523             "protected:\n"
11524             "\n"
11525             "  int j;\n"
11526             "};\n",
11527             format("struct foo {\n"
11528                    "private:\n"
11529                    "\n"
11530                    "  void f() {}\n"
11531                    "\n"
11532                    "private:\n"
11533                    "\n"
11534                    "  int i;\n"
11535                    "\n"
11536                    "protected:\n"
11537                    "\n"
11538                    "  int j;\n"
11539                    "};\n",
11540                    Style));
11541   // Check if no lines are kept.
11542   EXPECT_EQ("struct foo {\n"
11543             "private:\n"
11544             "  void f() {}\n"
11545             "\n"
11546             "private:\n"
11547             "  int i;\n"
11548             "\n"
11549             "protected:\n"
11550             "  int j;\n"
11551             "};\n",
11552             format("struct foo {\n"
11553                    "private:\n"
11554                    "  void f() {}\n"
11555                    "\n"
11556                    "private:\n"
11557                    "  int i;\n"
11558                    "\n"
11559                    "protected:\n"
11560                    "  int j;\n"
11561                    "};\n",
11562                    Style));
11563   // Check if MaxEmptyLinesToKeep is respected.
11564   EXPECT_EQ("struct foo {\n"
11565             "private:\n"
11566             "\n"
11567             "  void f() {}\n"
11568             "\n"
11569             "private:\n"
11570             "\n"
11571             "  int i;\n"
11572             "\n"
11573             "protected:\n"
11574             "\n"
11575             "  int j;\n"
11576             "};\n",
11577             format("struct foo {\n"
11578                    "private:\n"
11579                    "\n\n\n"
11580                    "  void f() {}\n"
11581                    "\n"
11582                    "private:\n"
11583                    "\n\n\n"
11584                    "  int i;\n"
11585                    "\n"
11586                    "protected:\n"
11587                    "\n\n\n"
11588                    "  int j;\n"
11589                    "};\n",
11590                    Style));
11591 
11592   Style.MaxEmptyLinesToKeep = 10u;
11593   EXPECT_EQ("struct foo {\n"
11594             "private:\n"
11595             "\n\n\n"
11596             "  void f() {}\n"
11597             "\n"
11598             "private:\n"
11599             "\n\n\n"
11600             "  int i;\n"
11601             "\n"
11602             "protected:\n"
11603             "\n\n\n"
11604             "  int j;\n"
11605             "};\n",
11606             format("struct foo {\n"
11607                    "private:\n"
11608                    "\n\n\n"
11609                    "  void f() {}\n"
11610                    "\n"
11611                    "private:\n"
11612                    "\n\n\n"
11613                    "  int i;\n"
11614                    "\n"
11615                    "protected:\n"
11616                    "\n\n\n"
11617                    "  int j;\n"
11618                    "};\n",
11619                    Style));
11620 
11621   // Test with comments.
11622   Style = getLLVMStyle();
11623   verifyFormat("struct foo {\n"
11624                "private:\n"
11625                "  // comment\n"
11626                "  void f() {}\n"
11627                "\n"
11628                "private: /* comment */\n"
11629                "  int i;\n"
11630                "};\n",
11631                Style);
11632   verifyFormat("struct foo {\n"
11633                "private:\n"
11634                "  // comment\n"
11635                "  void f() {}\n"
11636                "\n"
11637                "private: /* comment */\n"
11638                "  int i;\n"
11639                "};\n",
11640                "struct foo {\n"
11641                "private:\n"
11642                "\n"
11643                "  // comment\n"
11644                "  void f() {}\n"
11645                "\n"
11646                "private: /* comment */\n"
11647                "\n"
11648                "  int i;\n"
11649                "};\n",
11650                Style);
11651 
11652   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Always;
11653   verifyFormat("struct foo {\n"
11654                "private:\n"
11655                "\n"
11656                "  // comment\n"
11657                "  void f() {}\n"
11658                "\n"
11659                "private: /* comment */\n"
11660                "\n"
11661                "  int i;\n"
11662                "};\n",
11663                "struct foo {\n"
11664                "private:\n"
11665                "  // comment\n"
11666                "  void f() {}\n"
11667                "\n"
11668                "private: /* comment */\n"
11669                "  int i;\n"
11670                "};\n",
11671                Style);
11672   verifyFormat("struct foo {\n"
11673                "private:\n"
11674                "\n"
11675                "  // comment\n"
11676                "  void f() {}\n"
11677                "\n"
11678                "private: /* comment */\n"
11679                "\n"
11680                "  int i;\n"
11681                "};\n",
11682                Style);
11683 
11684   // Test with preprocessor defines.
11685   Style = getLLVMStyle();
11686   verifyFormat("struct foo {\n"
11687                "private:\n"
11688                "#ifdef FOO\n"
11689                "#endif\n"
11690                "  void f() {}\n"
11691                "};\n",
11692                Style);
11693   verifyFormat("struct foo {\n"
11694                "private:\n"
11695                "#ifdef FOO\n"
11696                "#endif\n"
11697                "  void f() {}\n"
11698                "};\n",
11699                "struct foo {\n"
11700                "private:\n"
11701                "\n"
11702                "#ifdef FOO\n"
11703                "#endif\n"
11704                "  void f() {}\n"
11705                "};\n",
11706                Style);
11707 
11708   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Always;
11709   verifyFormat("struct foo {\n"
11710                "private:\n"
11711                "\n"
11712                "#ifdef FOO\n"
11713                "#endif\n"
11714                "  void f() {}\n"
11715                "};\n",
11716                "struct foo {\n"
11717                "private:\n"
11718                "#ifdef FOO\n"
11719                "#endif\n"
11720                "  void f() {}\n"
11721                "};\n",
11722                Style);
11723   verifyFormat("struct foo {\n"
11724                "private:\n"
11725                "\n"
11726                "#ifdef FOO\n"
11727                "#endif\n"
11728                "  void f() {}\n"
11729                "};\n",
11730                Style);
11731 }
11732 
11733 TEST_F(FormatTest, FormatsAfterAndBeforeAccessModifiersInteraction) {
11734   // Combined tests of EmptyLineAfterAccessModifier and
11735   // EmptyLineBeforeAccessModifier.
11736   FormatStyle Style = getLLVMStyle();
11737   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Always;
11738   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Always;
11739   verifyFormat("struct foo {\n"
11740                "private:\n"
11741                "\n"
11742                "protected:\n"
11743                "};\n",
11744                Style);
11745 
11746   Style.MaxEmptyLinesToKeep = 10u;
11747   // Both remove all new lines.
11748   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Never;
11749   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Never;
11750   verifyFormat("struct foo {\n"
11751                "private:\n"
11752                "protected:\n"
11753                "};\n",
11754                "struct foo {\n"
11755                "private:\n"
11756                "\n\n\n"
11757                "protected:\n"
11758                "};\n",
11759                Style);
11760 
11761   // Leave tests rely on the code layout, test::messUp can not be used.
11762   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Leave;
11763   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Leave;
11764   Style.MaxEmptyLinesToKeep = 10u;
11765   EXPECT_EQ("struct foo {\n"
11766             "private:\n"
11767             "\n\n\n"
11768             "protected:\n"
11769             "};\n",
11770             format("struct foo {\n"
11771                    "private:\n"
11772                    "\n\n\n"
11773                    "protected:\n"
11774                    "};\n",
11775                    Style));
11776   Style.MaxEmptyLinesToKeep = 3u;
11777   EXPECT_EQ("struct foo {\n"
11778             "private:\n"
11779             "\n\n\n"
11780             "protected:\n"
11781             "};\n",
11782             format("struct foo {\n"
11783                    "private:\n"
11784                    "\n\n\n"
11785                    "protected:\n"
11786                    "};\n",
11787                    Style));
11788   Style.MaxEmptyLinesToKeep = 1u;
11789   EXPECT_EQ("struct foo {\n"
11790             "private:\n"
11791             "\n\n\n"
11792             "protected:\n"
11793             "};\n",
11794             format("struct foo {\n"
11795                    "private:\n"
11796                    "\n\n\n"
11797                    "protected:\n"
11798                    "};\n",
11799                    Style)); // Based on new lines in original document and not
11800                             // on the setting.
11801 
11802   Style.MaxEmptyLinesToKeep = 10u;
11803   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Always;
11804   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Leave;
11805   // Newlines are kept if they are greater than zero,
11806   // test::messUp removes all new lines which changes the logic
11807   EXPECT_EQ("struct foo {\n"
11808             "private:\n"
11809             "\n\n\n"
11810             "protected:\n"
11811             "};\n",
11812             format("struct foo {\n"
11813                    "private:\n"
11814                    "\n\n\n"
11815                    "protected:\n"
11816                    "};\n",
11817                    Style));
11818 
11819   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Leave;
11820   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Always;
11821   // test::messUp removes all new lines which changes the logic
11822   EXPECT_EQ("struct foo {\n"
11823             "private:\n"
11824             "\n\n\n"
11825             "protected:\n"
11826             "};\n",
11827             format("struct foo {\n"
11828                    "private:\n"
11829                    "\n\n\n"
11830                    "protected:\n"
11831                    "};\n",
11832                    Style));
11833 
11834   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Leave;
11835   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Never;
11836   EXPECT_EQ("struct foo {\n"
11837             "private:\n"
11838             "\n\n\n"
11839             "protected:\n"
11840             "};\n",
11841             format("struct foo {\n"
11842                    "private:\n"
11843                    "\n\n\n"
11844                    "protected:\n"
11845                    "};\n",
11846                    Style)); // test::messUp removes all new lines which changes
11847                             // the logic.
11848 
11849   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Never;
11850   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Leave;
11851   verifyFormat("struct foo {\n"
11852                "private:\n"
11853                "protected:\n"
11854                "};\n",
11855                "struct foo {\n"
11856                "private:\n"
11857                "\n\n\n"
11858                "protected:\n"
11859                "};\n",
11860                Style);
11861 
11862   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Always;
11863   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Never;
11864   EXPECT_EQ("struct foo {\n"
11865             "private:\n"
11866             "\n\n\n"
11867             "protected:\n"
11868             "};\n",
11869             format("struct foo {\n"
11870                    "private:\n"
11871                    "\n\n\n"
11872                    "protected:\n"
11873                    "};\n",
11874                    Style)); // test::messUp removes all new lines which changes
11875                             // the logic.
11876 
11877   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Never;
11878   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Always;
11879   verifyFormat("struct foo {\n"
11880                "private:\n"
11881                "protected:\n"
11882                "};\n",
11883                "struct foo {\n"
11884                "private:\n"
11885                "\n\n\n"
11886                "protected:\n"
11887                "};\n",
11888                Style);
11889 
11890   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_LogicalBlock;
11891   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Always;
11892   verifyFormat("struct foo {\n"
11893                "private:\n"
11894                "protected:\n"
11895                "};\n",
11896                "struct foo {\n"
11897                "private:\n"
11898                "\n\n\n"
11899                "protected:\n"
11900                "};\n",
11901                Style);
11902 
11903   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_LogicalBlock;
11904   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Leave;
11905   verifyFormat("struct foo {\n"
11906                "private:\n"
11907                "protected:\n"
11908                "};\n",
11909                "struct foo {\n"
11910                "private:\n"
11911                "\n\n\n"
11912                "protected:\n"
11913                "};\n",
11914                Style);
11915 
11916   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_LogicalBlock;
11917   Style.EmptyLineAfterAccessModifier = FormatStyle::ELAAMS_Never;
11918   verifyFormat("struct foo {\n"
11919                "private:\n"
11920                "protected:\n"
11921                "};\n",
11922                "struct foo {\n"
11923                "private:\n"
11924                "\n\n\n"
11925                "protected:\n"
11926                "};\n",
11927                Style);
11928 }
11929 
11930 TEST_F(FormatTest, FormatsArrays) {
11931   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
11932                "                         [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;");
11933   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa(aaaaaaaaaaaa)]\n"
11934                "                         [bbbbbbbbbbb(bbbbbbbbbbbb)] = c;");
11935   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaa &&\n"
11936                "    aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaa][aaaaaaaaaaaaa]) {\n}");
11937   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11938                "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
11939   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11940                "    [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;");
11941   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11942                "    [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n"
11943                "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
11944   verifyFormat(
11945       "llvm::outs() << \"aaaaaaaaaaaa: \"\n"
11946       "             << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
11947       "                                  [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];");
11948   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaa][a]\n"
11949                "    .aaaaaaaaaaaaaaaaaaaaaa();");
11950 
11951   verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n"
11952                      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];");
11953   verifyFormat(
11954       "aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n"
11955       "                                  .aaaaaaa[0]\n"
11956       "                                  .aaaaaaaaaaaaaaaaaaaaaa();");
11957   verifyFormat("a[::b::c];");
11958 
11959   verifyNoCrash("a[,Y?)]", getLLVMStyleWithColumns(10));
11960 
11961   FormatStyle NoColumnLimit = getLLVMStyleWithColumns(0);
11962   verifyFormat("aaaaa[bbbbbb].cccccc()", NoColumnLimit);
11963 }
11964 
11965 TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
11966   verifyFormat("(a)->b();");
11967   verifyFormat("--a;");
11968 }
11969 
11970 TEST_F(FormatTest, HandlesIncludeDirectives) {
11971   verifyFormat("#include <string>\n"
11972                "#include <a/b/c.h>\n"
11973                "#include \"a/b/string\"\n"
11974                "#include \"string.h\"\n"
11975                "#include \"string.h\"\n"
11976                "#include <a-a>\n"
11977                "#include < path with space >\n"
11978                "#include_next <test.h>"
11979                "#include \"abc.h\" // this is included for ABC\n"
11980                "#include \"some long include\" // with a comment\n"
11981                "#include \"some very long include path\"\n"
11982                "#include <some/very/long/include/path>\n",
11983                getLLVMStyleWithColumns(35));
11984   EXPECT_EQ("#include \"a.h\"", format("#include  \"a.h\""));
11985   EXPECT_EQ("#include <a>", format("#include<a>"));
11986 
11987   verifyFormat("#import <string>");
11988   verifyFormat("#import <a/b/c.h>");
11989   verifyFormat("#import \"a/b/string\"");
11990   verifyFormat("#import \"string.h\"");
11991   verifyFormat("#import \"string.h\"");
11992   verifyFormat("#if __has_include(<strstream>)\n"
11993                "#include <strstream>\n"
11994                "#endif");
11995 
11996   verifyFormat("#define MY_IMPORT <a/b>");
11997 
11998   verifyFormat("#if __has_include(<a/b>)");
11999   verifyFormat("#if __has_include_next(<a/b>)");
12000   verifyFormat("#define F __has_include(<a/b>)");
12001   verifyFormat("#define F __has_include_next(<a/b>)");
12002 
12003   // Protocol buffer definition or missing "#".
12004   verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";",
12005                getLLVMStyleWithColumns(30));
12006 
12007   FormatStyle Style = getLLVMStyle();
12008   Style.AlwaysBreakBeforeMultilineStrings = true;
12009   Style.ColumnLimit = 0;
12010   verifyFormat("#import \"abc.h\"", Style);
12011 
12012   // But 'import' might also be a regular C++ namespace.
12013   verifyFormat("import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
12014                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
12015 }
12016 
12017 //===----------------------------------------------------------------------===//
12018 // Error recovery tests.
12019 //===----------------------------------------------------------------------===//
12020 
12021 TEST_F(FormatTest, IncompleteParameterLists) {
12022   FormatStyle NoBinPacking = getLLVMStyle();
12023   NoBinPacking.BinPackParameters = false;
12024   verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
12025                "                        double *min_x,\n"
12026                "                        double *max_x,\n"
12027                "                        double *min_y,\n"
12028                "                        double *max_y,\n"
12029                "                        double *min_z,\n"
12030                "                        double *max_z, ) {}",
12031                NoBinPacking);
12032 }
12033 
12034 TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
12035   verifyFormat("void f() { return; }\n42");
12036   verifyFormat("void f() {\n"
12037                "  if (0)\n"
12038                "    return;\n"
12039                "}\n"
12040                "42");
12041   verifyFormat("void f() { return }\n42");
12042   verifyFormat("void f() {\n"
12043                "  if (0)\n"
12044                "    return\n"
12045                "}\n"
12046                "42");
12047 }
12048 
12049 TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
12050   EXPECT_EQ("void f() { return }", format("void  f ( )  {  return  }"));
12051   EXPECT_EQ("void f() {\n"
12052             "  if (a)\n"
12053             "    return\n"
12054             "}",
12055             format("void  f  (  )  {  if  ( a )  return  }"));
12056   EXPECT_EQ("namespace N {\n"
12057             "void f()\n"
12058             "}",
12059             format("namespace  N  {  void f()  }"));
12060   EXPECT_EQ("namespace N {\n"
12061             "void f() {}\n"
12062             "void g()\n"
12063             "} // namespace N",
12064             format("namespace N  { void f( ) { } void g( ) }"));
12065 }
12066 
12067 TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
12068   verifyFormat("int aaaaaaaa =\n"
12069                "    // Overlylongcomment\n"
12070                "    b;",
12071                getLLVMStyleWithColumns(20));
12072   verifyFormat("function(\n"
12073                "    ShortArgument,\n"
12074                "    LoooooooooooongArgument);\n",
12075                getLLVMStyleWithColumns(20));
12076 }
12077 
12078 TEST_F(FormatTest, IncorrectAccessSpecifier) {
12079   verifyFormat("public:");
12080   verifyFormat("class A {\n"
12081                "public\n"
12082                "  void f() {}\n"
12083                "};");
12084   verifyFormat("public\n"
12085                "int qwerty;");
12086   verifyFormat("public\n"
12087                "B {}");
12088   verifyFormat("public\n"
12089                "{}");
12090   verifyFormat("public\n"
12091                "B { int x; }");
12092 }
12093 
12094 TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
12095   verifyFormat("{");
12096   verifyFormat("#})");
12097   verifyNoCrash("(/**/[:!] ?[).");
12098 }
12099 
12100 TEST_F(FormatTest, IncorrectUnbalancedBracesInMacrosWithUnicode) {
12101   // Found by oss-fuzz:
12102   // https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8212
12103   FormatStyle Style = getGoogleStyle(FormatStyle::LK_Cpp);
12104   Style.ColumnLimit = 60;
12105   verifyNoCrash(
12106       "\x23\x47\xff\x20\x28\xff\x3c\xff\x3f\xff\x20\x2f\x7b\x7a\xff\x20"
12107       "\xff\xff\xff\xca\xb5\xff\xff\xff\xff\x3a\x7b\x7d\xff\x20\xff\x20"
12108       "\xff\x74\xff\x20\x7d\x7d\xff\x7b\x3a\xff\x20\x71\xff\x20\xff\x0a",
12109       Style);
12110 }
12111 
12112 TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
12113   verifyFormat("do {\n}");
12114   verifyFormat("do {\n}\n"
12115                "f();");
12116   verifyFormat("do {\n}\n"
12117                "wheeee(fun);");
12118   verifyFormat("do {\n"
12119                "  f();\n"
12120                "}");
12121 }
12122 
12123 TEST_F(FormatTest, IncorrectCodeMissingParens) {
12124   verifyFormat("if {\n  foo;\n  foo();\n}");
12125   verifyFormat("switch {\n  foo;\n  foo();\n}");
12126   verifyIncompleteFormat("for {\n  foo;\n  foo();\n}");
12127   verifyIncompleteFormat("ERROR: for target;");
12128   verifyFormat("while {\n  foo;\n  foo();\n}");
12129   verifyFormat("do {\n  foo;\n  foo();\n} while;");
12130 }
12131 
12132 TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
12133   verifyIncompleteFormat("namespace {\n"
12134                          "class Foo { Foo (\n"
12135                          "};\n"
12136                          "} // namespace");
12137 }
12138 
12139 TEST_F(FormatTest, IncorrectCodeErrorDetection) {
12140   EXPECT_EQ("{\n  {}\n", format("{\n{\n}\n"));
12141   EXPECT_EQ("{\n  {}\n", format("{\n  {\n}\n"));
12142   EXPECT_EQ("{\n  {}\n", format("{\n  {\n  }\n"));
12143   EXPECT_EQ("{\n  {}\n}\n}\n", format("{\n  {\n    }\n  }\n}\n"));
12144 
12145   EXPECT_EQ("{\n"
12146             "  {\n"
12147             "    breakme(\n"
12148             "        qwe);\n"
12149             "  }\n",
12150             format("{\n"
12151                    "    {\n"
12152                    " breakme(qwe);\n"
12153                    "}\n",
12154                    getLLVMStyleWithColumns(10)));
12155 }
12156 
12157 TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
12158   verifyFormat("int x = {\n"
12159                "    avariable,\n"
12160                "    b(alongervariable)};",
12161                getLLVMStyleWithColumns(25));
12162 }
12163 
12164 TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
12165   verifyFormat("return (a)(b){1, 2, 3};");
12166 }
12167 
12168 TEST_F(FormatTest, LayoutCxx11BraceInitializers) {
12169   verifyFormat("vector<int> x{1, 2, 3, 4};");
12170   verifyFormat("vector<int> x{\n"
12171                "    1,\n"
12172                "    2,\n"
12173                "    3,\n"
12174                "    4,\n"
12175                "};");
12176   verifyFormat("vector<T> x{{}, {}, {}, {}};");
12177   verifyFormat("f({1, 2});");
12178   verifyFormat("auto v = Foo{-1};");
12179   verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});");
12180   verifyFormat("Class::Class : member{1, 2, 3} {}");
12181   verifyFormat("new vector<int>{1, 2, 3};");
12182   verifyFormat("new int[3]{1, 2, 3};");
12183   verifyFormat("new int{1};");
12184   verifyFormat("return {arg1, arg2};");
12185   verifyFormat("return {arg1, SomeType{parameter}};");
12186   verifyFormat("int count = set<int>{f(), g(), h()}.size();");
12187   verifyFormat("new T{arg1, arg2};");
12188   verifyFormat("f(MyMap[{composite, key}]);");
12189   verifyFormat("class Class {\n"
12190                "  T member = {arg1, arg2};\n"
12191                "};");
12192   verifyFormat("vector<int> foo = {::SomeGlobalFunction()};");
12193   verifyFormat("const struct A a = {.a = 1, .b = 2};");
12194   verifyFormat("const struct A a = {[0] = 1, [1] = 2};");
12195   verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");");
12196   verifyFormat("int a = std::is_integral<int>{} + 0;");
12197 
12198   verifyFormat("int foo(int i) { return fo1{}(i); }");
12199   verifyFormat("int foo(int i) { return fo1{}(i); }");
12200   verifyFormat("auto i = decltype(x){};");
12201   verifyFormat("auto i = typeof(x){};");
12202   verifyFormat("auto i = _Atomic(x){};");
12203   verifyFormat("std::vector<int> v = {1, 0 /* comment */};");
12204   verifyFormat("Node n{1, Node{1000}, //\n"
12205                "       2};");
12206   verifyFormat("Aaaa aaaaaaa{\n"
12207                "    {\n"
12208                "        aaaa,\n"
12209                "    },\n"
12210                "};");
12211   verifyFormat("class C : public D {\n"
12212                "  SomeClass SC{2};\n"
12213                "};");
12214   verifyFormat("class C : public A {\n"
12215                "  class D : public B {\n"
12216                "    void f() { int i{2}; }\n"
12217                "  };\n"
12218                "};");
12219   verifyFormat("#define A {a, a},");
12220   // Don't confuse braced list initializers with compound statements.
12221   verifyFormat(
12222       "class A {\n"
12223       "  A() : a{} {}\n"
12224       "  A(int b) : b(b) {}\n"
12225       "  A(int a, int b) : a(a), bs{{bs...}} { f(); }\n"
12226       "  int a, b;\n"
12227       "  explicit Expr(const Scalar<Result> &x) : u{Constant<Result>{x}} {}\n"
12228       "  explicit Expr(Scalar<Result> &&x) : u{Constant<Result>{std::move(x)}} "
12229       "{}\n"
12230       "};");
12231 
12232   // Avoid breaking between equal sign and opening brace
12233   FormatStyle AvoidBreakingFirstArgument = getLLVMStyle();
12234   AvoidBreakingFirstArgument.PenaltyBreakBeforeFirstCallParameter = 200;
12235   verifyFormat("const std::unordered_map<std::string, int> MyHashTable =\n"
12236                "    {{\"aaaaaaaaaaaaaaaaaaaaa\", 0},\n"
12237                "     {\"bbbbbbbbbbbbbbbbbbbbb\", 1},\n"
12238                "     {\"ccccccccccccccccccccc\", 2}};",
12239                AvoidBreakingFirstArgument);
12240 
12241   // Binpacking only if there is no trailing comma
12242   verifyFormat("const Aaaaaa aaaaa = {aaaaaaaaaa, bbbbbbbbbb,\n"
12243                "                      cccccccccc, dddddddddd};",
12244                getLLVMStyleWithColumns(50));
12245   verifyFormat("const Aaaaaa aaaaa = {\n"
12246                "    aaaaaaaaaaa,\n"
12247                "    bbbbbbbbbbb,\n"
12248                "    ccccccccccc,\n"
12249                "    ddddddddddd,\n"
12250                "};",
12251                getLLVMStyleWithColumns(50));
12252 
12253   // Cases where distinguising braced lists and blocks is hard.
12254   verifyFormat("vector<int> v{12} GUARDED_BY(mutex);");
12255   verifyFormat("void f() {\n"
12256                "  return; // comment\n"
12257                "}\n"
12258                "SomeType t;");
12259   verifyFormat("void f() {\n"
12260                "  if (a) {\n"
12261                "    f();\n"
12262                "  }\n"
12263                "}\n"
12264                "SomeType t;");
12265 
12266   // In combination with BinPackArguments = false.
12267   FormatStyle NoBinPacking = getLLVMStyle();
12268   NoBinPacking.BinPackArguments = false;
12269   verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n"
12270                "                      bbbbb,\n"
12271                "                      ccccc,\n"
12272                "                      ddddd,\n"
12273                "                      eeeee,\n"
12274                "                      ffffff,\n"
12275                "                      ggggg,\n"
12276                "                      hhhhhh,\n"
12277                "                      iiiiii,\n"
12278                "                      jjjjjj,\n"
12279                "                      kkkkkk};",
12280                NoBinPacking);
12281   verifyFormat("const Aaaaaa aaaaa = {\n"
12282                "    aaaaa,\n"
12283                "    bbbbb,\n"
12284                "    ccccc,\n"
12285                "    ddddd,\n"
12286                "    eeeee,\n"
12287                "    ffffff,\n"
12288                "    ggggg,\n"
12289                "    hhhhhh,\n"
12290                "    iiiiii,\n"
12291                "    jjjjjj,\n"
12292                "    kkkkkk,\n"
12293                "};",
12294                NoBinPacking);
12295   verifyFormat(
12296       "const Aaaaaa aaaaa = {\n"
12297       "    aaaaa,  bbbbb,  ccccc,  ddddd,  eeeee,  ffffff, ggggg, hhhhhh,\n"
12298       "    iiiiii, jjjjjj, kkkkkk, aaaaa,  bbbbb,  ccccc,  ddddd, eeeee,\n"
12299       "    ffffff, ggggg,  hhhhhh, iiiiii, jjjjjj, kkkkkk,\n"
12300       "};",
12301       NoBinPacking);
12302 
12303   NoBinPacking.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
12304   EXPECT_EQ("static uint8 CddDp83848Reg[] = {\n"
12305             "    CDDDP83848_BMCR_REGISTER,\n"
12306             "    CDDDP83848_BMSR_REGISTER,\n"
12307             "    CDDDP83848_RBR_REGISTER};",
12308             format("static uint8 CddDp83848Reg[] = {CDDDP83848_BMCR_REGISTER,\n"
12309                    "                                CDDDP83848_BMSR_REGISTER,\n"
12310                    "                                CDDDP83848_RBR_REGISTER};",
12311                    NoBinPacking));
12312 
12313   // FIXME: The alignment of these trailing comments might be bad. Then again,
12314   // this might be utterly useless in real code.
12315   verifyFormat("Constructor::Constructor()\n"
12316                "    : some_value{         //\n"
12317                "                 aaaaaaa, //\n"
12318                "                 bbbbbbb} {}");
12319 
12320   // In braced lists, the first comment is always assumed to belong to the
12321   // first element. Thus, it can be moved to the next or previous line as
12322   // appropriate.
12323   EXPECT_EQ("function({// First element:\n"
12324             "          1,\n"
12325             "          // Second element:\n"
12326             "          2});",
12327             format("function({\n"
12328                    "    // First element:\n"
12329                    "    1,\n"
12330                    "    // Second element:\n"
12331                    "    2});"));
12332   EXPECT_EQ("std::vector<int> MyNumbers{\n"
12333             "    // First element:\n"
12334             "    1,\n"
12335             "    // Second element:\n"
12336             "    2};",
12337             format("std::vector<int> MyNumbers{// First element:\n"
12338                    "                           1,\n"
12339                    "                           // Second element:\n"
12340                    "                           2};",
12341                    getLLVMStyleWithColumns(30)));
12342   // A trailing comma should still lead to an enforced line break and no
12343   // binpacking.
12344   EXPECT_EQ("vector<int> SomeVector = {\n"
12345             "    // aaa\n"
12346             "    1,\n"
12347             "    2,\n"
12348             "};",
12349             format("vector<int> SomeVector = { // aaa\n"
12350                    "    1, 2, };"));
12351 
12352   // C++11 brace initializer list l-braces should not be treated any differently
12353   // when breaking before lambda bodies is enabled
12354   FormatStyle BreakBeforeLambdaBody = getLLVMStyle();
12355   BreakBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
12356   BreakBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
12357   BreakBeforeLambdaBody.AlwaysBreakBeforeMultilineStrings = true;
12358   verifyFormat(
12359       "std::runtime_error{\n"
12360       "    \"Long string which will force a break onto the next line...\"};",
12361       BreakBeforeLambdaBody);
12362 
12363   FormatStyle ExtraSpaces = getLLVMStyle();
12364   ExtraSpaces.Cpp11BracedListStyle = false;
12365   ExtraSpaces.ColumnLimit = 75;
12366   verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces);
12367   verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces);
12368   verifyFormat("f({ 1, 2 });", ExtraSpaces);
12369   verifyFormat("auto v = Foo{ 1 };", ExtraSpaces);
12370   verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces);
12371   verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces);
12372   verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces);
12373   verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces);
12374   verifyFormat("return { arg1, arg2 };", ExtraSpaces);
12375   verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces);
12376   verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces);
12377   verifyFormat("new T{ arg1, arg2 };", ExtraSpaces);
12378   verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces);
12379   verifyFormat("class Class {\n"
12380                "  T member = { arg1, arg2 };\n"
12381                "};",
12382                ExtraSpaces);
12383   verifyFormat(
12384       "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
12385       "                                 aaaaaaaaaaaaaaaaaaaa, aaaaa }\n"
12386       "                  : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
12387       "                                 bbbbbbbbbbbbbbbbbbbb, bbbbb };",
12388       ExtraSpaces);
12389   verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces);
12390   verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });",
12391                ExtraSpaces);
12392   verifyFormat(
12393       "someFunction(OtherParam,\n"
12394       "             BracedList{ // comment 1 (Forcing interesting break)\n"
12395       "                         param1, param2,\n"
12396       "                         // comment 2\n"
12397       "                         param3, param4 });",
12398       ExtraSpaces);
12399   verifyFormat(
12400       "std::this_thread::sleep_for(\n"
12401       "    std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);",
12402       ExtraSpaces);
12403   verifyFormat("std::vector<MyValues> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa{\n"
12404                "    aaaaaaa,\n"
12405                "    aaaaaaaaaa,\n"
12406                "    aaaaa,\n"
12407                "    aaaaaaaaaaaaaaa,\n"
12408                "    aaa,\n"
12409                "    aaaaaaaaaa,\n"
12410                "    a,\n"
12411                "    aaaaaaaaaaaaaaaaaaaaa,\n"
12412                "    aaaaaaaaaaaa,\n"
12413                "    aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa,\n"
12414                "    aaaaaaa,\n"
12415                "    a};");
12416   verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces);
12417   verifyFormat("const struct A a = { .a = 1, .b = 2 };", ExtraSpaces);
12418   verifyFormat("const struct A a = { [0] = 1, [1] = 2 };", ExtraSpaces);
12419 
12420   // Avoid breaking between initializer/equal sign and opening brace
12421   ExtraSpaces.PenaltyBreakBeforeFirstCallParameter = 200;
12422   verifyFormat("const std::unordered_map<std::string, int> MyHashTable = {\n"
12423                "  { \"aaaaaaaaaaaaaaaaaaaaa\", 0 },\n"
12424                "  { \"bbbbbbbbbbbbbbbbbbbbb\", 1 },\n"
12425                "  { \"ccccccccccccccccccccc\", 2 }\n"
12426                "};",
12427                ExtraSpaces);
12428   verifyFormat("const std::unordered_map<std::string, int> MyHashTable{\n"
12429                "  { \"aaaaaaaaaaaaaaaaaaaaa\", 0 },\n"
12430                "  { \"bbbbbbbbbbbbbbbbbbbbb\", 1 },\n"
12431                "  { \"ccccccccccccccccccccc\", 2 }\n"
12432                "};",
12433                ExtraSpaces);
12434 
12435   FormatStyle SpaceBeforeBrace = getLLVMStyle();
12436   SpaceBeforeBrace.SpaceBeforeCpp11BracedList = true;
12437   verifyFormat("vector<int> x {1, 2, 3, 4};", SpaceBeforeBrace);
12438   verifyFormat("f({}, {{}, {}}, MyMap[{k, v}]);", SpaceBeforeBrace);
12439 
12440   FormatStyle SpaceBetweenBraces = getLLVMStyle();
12441   SpaceBetweenBraces.SpacesInAngles = FormatStyle::SIAS_Always;
12442   SpaceBetweenBraces.SpacesInParentheses = true;
12443   SpaceBetweenBraces.SpacesInSquareBrackets = true;
12444   verifyFormat("vector< int > x{ 1, 2, 3, 4 };", SpaceBetweenBraces);
12445   verifyFormat("f( {}, { {}, {} }, MyMap[ { k, v } ] );", SpaceBetweenBraces);
12446   verifyFormat("vector< int > x{ // comment 1\n"
12447                "                 1, 2, 3, 4 };",
12448                SpaceBetweenBraces);
12449   SpaceBetweenBraces.ColumnLimit = 20;
12450   EXPECT_EQ("vector< int > x{\n"
12451             "    1, 2, 3, 4 };",
12452             format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
12453   SpaceBetweenBraces.ColumnLimit = 24;
12454   EXPECT_EQ("vector< int > x{ 1, 2,\n"
12455             "                 3, 4 };",
12456             format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
12457   EXPECT_EQ("vector< int > x{\n"
12458             "    1,\n"
12459             "    2,\n"
12460             "    3,\n"
12461             "    4,\n"
12462             "};",
12463             format("vector<int>x{1,2,3,4,};", SpaceBetweenBraces));
12464   verifyFormat("vector< int > x{};", SpaceBetweenBraces);
12465   SpaceBetweenBraces.SpaceInEmptyParentheses = true;
12466   verifyFormat("vector< int > x{ };", SpaceBetweenBraces);
12467 }
12468 
12469 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) {
12470   verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12471                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12472                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12473                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12474                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12475                "                 1, 22, 333, 4444, 55555, 666666, 7777777};");
12476   verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777, //\n"
12477                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12478                "                 1, 22, 333, 4444, 55555, //\n"
12479                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12480                "                 1, 22, 333, 4444, 55555, 666666, 7777777};");
12481   verifyFormat(
12482       "vector<int> x = {1,       22, 333, 4444, 55555, 666666, 7777777,\n"
12483       "                 1,       22, 333, 4444, 55555, 666666, 7777777,\n"
12484       "                 1,       22, 333, 4444, 55555, 666666, // comment\n"
12485       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
12486       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
12487       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
12488       "                 7777777};");
12489   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
12490                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
12491                "    X86::R8,  X86::R9,  X86::R10, X86::R11, 0};");
12492   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
12493                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
12494                "    // Separating comment.\n"
12495                "    X86::R8, X86::R9, X86::R10, X86::R11, 0};");
12496   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
12497                "    // Leading comment\n"
12498                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
12499                "    X86::R8,  X86::R9,  X86::R10, X86::R11, 0};");
12500   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
12501                "                 1, 1, 1, 1};",
12502                getLLVMStyleWithColumns(39));
12503   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
12504                "                 1, 1, 1, 1};",
12505                getLLVMStyleWithColumns(38));
12506   verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n"
12507                "    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};",
12508                getLLVMStyleWithColumns(43));
12509   verifyFormat(
12510       "static unsigned SomeValues[10][3] = {\n"
12511       "    {1, 4, 0},  {4, 9, 0},  {4, 5, 9},  {8, 5, 4}, {1, 8, 4},\n"
12512       "    {10, 1, 6}, {11, 0, 9}, {2, 11, 9}, {5, 2, 9}, {11, 2, 7}};");
12513   verifyFormat("static auto fields = new vector<string>{\n"
12514                "    \"aaaaaaaaaaaaa\",\n"
12515                "    \"aaaaaaaaaaaaa\",\n"
12516                "    \"aaaaaaaaaaaa\",\n"
12517                "    \"aaaaaaaaaaaaaa\",\n"
12518                "    \"aaaaaaaaaaaaaaaaaaaaaaaaa\",\n"
12519                "    \"aaaaaaaaaaaa\",\n"
12520                "    \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\n"
12521                "};");
12522   verifyFormat("vector<int> x = {1, 2, 3, 4, aaaaaaaaaaaaaaaaa, 6};");
12523   verifyFormat("vector<int> x = {1, aaaaaaaaaaaaaaaaaaaaaa,\n"
12524                "                 2, bbbbbbbbbbbbbbbbbbbbbb,\n"
12525                "                 3, cccccccccccccccccccccc};",
12526                getLLVMStyleWithColumns(60));
12527 
12528   // Trailing commas.
12529   verifyFormat("vector<int> x = {\n"
12530                "    1, 1, 1, 1, 1, 1, 1, 1,\n"
12531                "};",
12532                getLLVMStyleWithColumns(39));
12533   verifyFormat("vector<int> x = {\n"
12534                "    1, 1, 1, 1, 1, 1, 1, 1, //\n"
12535                "};",
12536                getLLVMStyleWithColumns(39));
12537   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
12538                "                 1, 1, 1, 1,\n"
12539                "                 /**/ /**/};",
12540                getLLVMStyleWithColumns(39));
12541 
12542   // Trailing comment in the first line.
12543   verifyFormat("vector<int> iiiiiiiiiiiiiii = {                      //\n"
12544                "    1111111111, 2222222222, 33333333333, 4444444444, //\n"
12545                "    111111111,  222222222,  3333333333,  444444444,  //\n"
12546                "    11111111,   22222222,   333333333,   44444444};");
12547   // Trailing comment in the last line.
12548   verifyFormat("int aaaaa[] = {\n"
12549                "    1, 2, 3, // comment\n"
12550                "    4, 5, 6  // comment\n"
12551                "};");
12552 
12553   // With nested lists, we should either format one item per line or all nested
12554   // lists one on line.
12555   // FIXME: For some nested lists, we can do better.
12556   verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n"
12557                "        {aaaaaaaaaaaaaaaaaaa},\n"
12558                "        {aaaaaaaaaaaaaaaaaaaaa},\n"
12559                "        {aaaaaaaaaaaaaaaaa}};",
12560                getLLVMStyleWithColumns(60));
12561   verifyFormat(
12562       "SomeStruct my_struct_array = {\n"
12563       "    {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n"
12564       "     aaaaaaaaaaaaa, aaaaaaa, aaa},\n"
12565       "    {aaa, aaa},\n"
12566       "    {aaa, aaa},\n"
12567       "    {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n"
12568       "    {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n"
12569       "     aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};");
12570 
12571   // No column layout should be used here.
12572   verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n"
12573                "                   bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};");
12574 
12575   verifyNoCrash("a<,");
12576 
12577   // No braced initializer here.
12578   verifyFormat("void f() {\n"
12579                "  struct Dummy {};\n"
12580                "  f(v);\n"
12581                "}");
12582 
12583   // Long lists should be formatted in columns even if they are nested.
12584   verifyFormat(
12585       "vector<int> x = function({1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12586       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12587       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12588       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12589       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
12590       "                          1, 22, 333, 4444, 55555, 666666, 7777777});");
12591 
12592   // Allow "single-column" layout even if that violates the column limit. There
12593   // isn't going to be a better way.
12594   verifyFormat("std::vector<int> a = {\n"
12595                "    aaaaaaaa,\n"
12596                "    aaaaaaaa,\n"
12597                "    aaaaaaaa,\n"
12598                "    aaaaaaaa,\n"
12599                "    aaaaaaaaaa,\n"
12600                "    aaaaaaaa,\n"
12601                "    aaaaaaaaaaaaaaaaaaaaaaaaaaa};",
12602                getLLVMStyleWithColumns(30));
12603   verifyFormat("vector<int> aaaa = {\n"
12604                "    aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
12605                "    aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
12606                "    aaaaaa.aaaaaaa,\n"
12607                "    aaaaaa.aaaaaaa,\n"
12608                "    aaaaaa.aaaaaaa,\n"
12609                "    aaaaaa.aaaaaaa,\n"
12610                "};");
12611 
12612   // Don't create hanging lists.
12613   verifyFormat("someFunction(Param, {List1, List2,\n"
12614                "                     List3});",
12615                getLLVMStyleWithColumns(35));
12616   verifyFormat("someFunction(Param, Param,\n"
12617                "             {List1, List2,\n"
12618                "              List3});",
12619                getLLVMStyleWithColumns(35));
12620   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa, {},\n"
12621                "                               aaaaaaaaaaaaaaaaaaaaaaa);");
12622 }
12623 
12624 TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
12625   FormatStyle DoNotMerge = getLLVMStyle();
12626   DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
12627 
12628   verifyFormat("void f() { return 42; }");
12629   verifyFormat("void f() {\n"
12630                "  return 42;\n"
12631                "}",
12632                DoNotMerge);
12633   verifyFormat("void f() {\n"
12634                "  // Comment\n"
12635                "}");
12636   verifyFormat("{\n"
12637                "#error {\n"
12638                "  int a;\n"
12639                "}");
12640   verifyFormat("{\n"
12641                "  int a;\n"
12642                "#error {\n"
12643                "}");
12644   verifyFormat("void f() {} // comment");
12645   verifyFormat("void f() { int a; } // comment");
12646   verifyFormat("void f() {\n"
12647                "} // comment",
12648                DoNotMerge);
12649   verifyFormat("void f() {\n"
12650                "  int a;\n"
12651                "} // comment",
12652                DoNotMerge);
12653   verifyFormat("void f() {\n"
12654                "} // comment",
12655                getLLVMStyleWithColumns(15));
12656 
12657   verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
12658   verifyFormat("void f() {\n  return 42;\n}", getLLVMStyleWithColumns(22));
12659 
12660   verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
12661   verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
12662   verifyFormat("class C {\n"
12663                "  C()\n"
12664                "      : iiiiiiii(nullptr),\n"
12665                "        kkkkkkk(nullptr),\n"
12666                "        mmmmmmm(nullptr),\n"
12667                "        nnnnnnn(nullptr) {}\n"
12668                "};",
12669                getGoogleStyle());
12670 
12671   FormatStyle NoColumnLimit = getLLVMStyleWithColumns(0);
12672   EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit));
12673   EXPECT_EQ("class C {\n"
12674             "  A() : b(0) {}\n"
12675             "};",
12676             format("class C{A():b(0){}};", NoColumnLimit));
12677   EXPECT_EQ("A()\n"
12678             "    : b(0) {\n"
12679             "}",
12680             format("A()\n:b(0)\n{\n}", NoColumnLimit));
12681 
12682   FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit;
12683   DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine =
12684       FormatStyle::SFS_None;
12685   EXPECT_EQ("A()\n"
12686             "    : b(0) {\n"
12687             "}",
12688             format("A():b(0){}", DoNotMergeNoColumnLimit));
12689   EXPECT_EQ("A()\n"
12690             "    : b(0) {\n"
12691             "}",
12692             format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit));
12693 
12694   verifyFormat("#define A          \\\n"
12695                "  void f() {       \\\n"
12696                "    int i;         \\\n"
12697                "  }",
12698                getLLVMStyleWithColumns(20));
12699   verifyFormat("#define A           \\\n"
12700                "  void f() { int i; }",
12701                getLLVMStyleWithColumns(21));
12702   verifyFormat("#define A            \\\n"
12703                "  void f() {         \\\n"
12704                "    int i;           \\\n"
12705                "  }                  \\\n"
12706                "  int j;",
12707                getLLVMStyleWithColumns(22));
12708   verifyFormat("#define A             \\\n"
12709                "  void f() { int i; } \\\n"
12710                "  int j;",
12711                getLLVMStyleWithColumns(23));
12712 }
12713 
12714 TEST_F(FormatTest, PullEmptyFunctionDefinitionsIntoSingleLine) {
12715   FormatStyle MergeEmptyOnly = getLLVMStyle();
12716   MergeEmptyOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
12717   verifyFormat("class C {\n"
12718                "  int f() {}\n"
12719                "};",
12720                MergeEmptyOnly);
12721   verifyFormat("class C {\n"
12722                "  int f() {\n"
12723                "    return 42;\n"
12724                "  }\n"
12725                "};",
12726                MergeEmptyOnly);
12727   verifyFormat("int f() {}", MergeEmptyOnly);
12728   verifyFormat("int f() {\n"
12729                "  return 42;\n"
12730                "}",
12731                MergeEmptyOnly);
12732 
12733   // Also verify behavior when BraceWrapping.AfterFunction = true
12734   MergeEmptyOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
12735   MergeEmptyOnly.BraceWrapping.AfterFunction = true;
12736   verifyFormat("int f() {}", MergeEmptyOnly);
12737   verifyFormat("class C {\n"
12738                "  int f() {}\n"
12739                "};",
12740                MergeEmptyOnly);
12741 }
12742 
12743 TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) {
12744   FormatStyle MergeInlineOnly = getLLVMStyle();
12745   MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
12746   verifyFormat("class C {\n"
12747                "  int f() { return 42; }\n"
12748                "};",
12749                MergeInlineOnly);
12750   verifyFormat("int f() {\n"
12751                "  return 42;\n"
12752                "}",
12753                MergeInlineOnly);
12754 
12755   // SFS_Inline implies SFS_Empty
12756   verifyFormat("class C {\n"
12757                "  int f() {}\n"
12758                "};",
12759                MergeInlineOnly);
12760   verifyFormat("int f() {}", MergeInlineOnly);
12761   // https://llvm.org/PR54147
12762   verifyFormat("auto lambda = []() {\n"
12763                "  // comment\n"
12764                "  f();\n"
12765                "  g();\n"
12766                "};",
12767                MergeInlineOnly);
12768 
12769   // Also verify behavior when BraceWrapping.AfterFunction = true
12770   MergeInlineOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
12771   MergeInlineOnly.BraceWrapping.AfterFunction = true;
12772   verifyFormat("class C {\n"
12773                "  int f() { return 42; }\n"
12774                "};",
12775                MergeInlineOnly);
12776   verifyFormat("int f()\n"
12777                "{\n"
12778                "  return 42;\n"
12779                "}",
12780                MergeInlineOnly);
12781 
12782   // SFS_Inline implies SFS_Empty
12783   verifyFormat("int f() {}", MergeInlineOnly);
12784   verifyFormat("class C {\n"
12785                "  int f() {}\n"
12786                "};",
12787                MergeInlineOnly);
12788 
12789   MergeInlineOnly.BraceWrapping.AfterClass = true;
12790   MergeInlineOnly.BraceWrapping.AfterStruct = true;
12791   verifyFormat("class C\n"
12792                "{\n"
12793                "  int f() { return 42; }\n"
12794                "};",
12795                MergeInlineOnly);
12796   verifyFormat("struct C\n"
12797                "{\n"
12798                "  int f() { return 42; }\n"
12799                "};",
12800                MergeInlineOnly);
12801   verifyFormat("int f()\n"
12802                "{\n"
12803                "  return 42;\n"
12804                "}",
12805                MergeInlineOnly);
12806   verifyFormat("int f() {}", MergeInlineOnly);
12807   verifyFormat("class C\n"
12808                "{\n"
12809                "  int f() { return 42; }\n"
12810                "};",
12811                MergeInlineOnly);
12812   verifyFormat("struct C\n"
12813                "{\n"
12814                "  int f() { return 42; }\n"
12815                "};",
12816                MergeInlineOnly);
12817   verifyFormat("struct C\n"
12818                "// comment\n"
12819                "/* comment */\n"
12820                "// comment\n"
12821                "{\n"
12822                "  int f() { return 42; }\n"
12823                "};",
12824                MergeInlineOnly);
12825   verifyFormat("/* comment */ struct C\n"
12826                "{\n"
12827                "  int f() { return 42; }\n"
12828                "};",
12829                MergeInlineOnly);
12830 }
12831 
12832 TEST_F(FormatTest, PullInlineOnlyFunctionDefinitionsIntoSingleLine) {
12833   FormatStyle MergeInlineOnly = getLLVMStyle();
12834   MergeInlineOnly.AllowShortFunctionsOnASingleLine =
12835       FormatStyle::SFS_InlineOnly;
12836   verifyFormat("class C {\n"
12837                "  int f() { return 42; }\n"
12838                "};",
12839                MergeInlineOnly);
12840   verifyFormat("int f() {\n"
12841                "  return 42;\n"
12842                "}",
12843                MergeInlineOnly);
12844 
12845   // SFS_InlineOnly does not imply SFS_Empty
12846   verifyFormat("class C {\n"
12847                "  int f() {}\n"
12848                "};",
12849                MergeInlineOnly);
12850   verifyFormat("int f() {\n"
12851                "}",
12852                MergeInlineOnly);
12853 
12854   // Also verify behavior when BraceWrapping.AfterFunction = true
12855   MergeInlineOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
12856   MergeInlineOnly.BraceWrapping.AfterFunction = true;
12857   verifyFormat("class C {\n"
12858                "  int f() { return 42; }\n"
12859                "};",
12860                MergeInlineOnly);
12861   verifyFormat("int f()\n"
12862                "{\n"
12863                "  return 42;\n"
12864                "}",
12865                MergeInlineOnly);
12866 
12867   // SFS_InlineOnly does not imply SFS_Empty
12868   verifyFormat("int f()\n"
12869                "{\n"
12870                "}",
12871                MergeInlineOnly);
12872   verifyFormat("class C {\n"
12873                "  int f() {}\n"
12874                "};",
12875                MergeInlineOnly);
12876 }
12877 
12878 TEST_F(FormatTest, SplitEmptyFunction) {
12879   FormatStyle Style = getLLVMStyleWithColumns(40);
12880   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
12881   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
12882   Style.BraceWrapping.AfterFunction = true;
12883   Style.BraceWrapping.SplitEmptyFunction = false;
12884 
12885   verifyFormat("int f()\n"
12886                "{}",
12887                Style);
12888   verifyFormat("int f()\n"
12889                "{\n"
12890                "  return 42;\n"
12891                "}",
12892                Style);
12893   verifyFormat("int f()\n"
12894                "{\n"
12895                "  // some comment\n"
12896                "}",
12897                Style);
12898 
12899   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
12900   verifyFormat("int f() {}", Style);
12901   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
12902                "{}",
12903                Style);
12904   verifyFormat("int f()\n"
12905                "{\n"
12906                "  return 0;\n"
12907                "}",
12908                Style);
12909 
12910   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
12911   verifyFormat("class Foo {\n"
12912                "  int f() {}\n"
12913                "};\n",
12914                Style);
12915   verifyFormat("class Foo {\n"
12916                "  int f() { return 0; }\n"
12917                "};\n",
12918                Style);
12919   verifyFormat("class Foo {\n"
12920                "  int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
12921                "  {}\n"
12922                "};\n",
12923                Style);
12924   verifyFormat("class Foo {\n"
12925                "  int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
12926                "  {\n"
12927                "    return 0;\n"
12928                "  }\n"
12929                "};\n",
12930                Style);
12931 
12932   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
12933   verifyFormat("int f() {}", Style);
12934   verifyFormat("int f() { return 0; }", Style);
12935   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
12936                "{}",
12937                Style);
12938   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
12939                "{\n"
12940                "  return 0;\n"
12941                "}",
12942                Style);
12943 }
12944 
12945 TEST_F(FormatTest, SplitEmptyFunctionButNotRecord) {
12946   FormatStyle Style = getLLVMStyleWithColumns(40);
12947   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
12948   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
12949   Style.BraceWrapping.AfterFunction = true;
12950   Style.BraceWrapping.SplitEmptyFunction = true;
12951   Style.BraceWrapping.SplitEmptyRecord = false;
12952 
12953   verifyFormat("class C {};", Style);
12954   verifyFormat("struct C {};", Style);
12955   verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
12956                "       int bbbbbbbbbbbbbbbbbbbbbbbb)\n"
12957                "{\n"
12958                "}",
12959                Style);
12960   verifyFormat("class C {\n"
12961                "  C()\n"
12962                "      : aaaaaaaaaaaaaaaaaaaaaaaaaaaa(),\n"
12963                "        bbbbbbbbbbbbbbbbbbb()\n"
12964                "  {\n"
12965                "  }\n"
12966                "  void\n"
12967                "  m(int aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
12968                "    int bbbbbbbbbbbbbbbbbbbbbbbb)\n"
12969                "  {\n"
12970                "  }\n"
12971                "};",
12972                Style);
12973 }
12974 
12975 TEST_F(FormatTest, KeepShortFunctionAfterPPElse) {
12976   FormatStyle Style = getLLVMStyle();
12977   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
12978   verifyFormat("#ifdef A\n"
12979                "int f() {}\n"
12980                "#else\n"
12981                "int g() {}\n"
12982                "#endif",
12983                Style);
12984 }
12985 
12986 TEST_F(FormatTest, SplitEmptyClass) {
12987   FormatStyle Style = getLLVMStyle();
12988   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
12989   Style.BraceWrapping.AfterClass = true;
12990   Style.BraceWrapping.SplitEmptyRecord = false;
12991 
12992   verifyFormat("class Foo\n"
12993                "{};",
12994                Style);
12995   verifyFormat("/* something */ class Foo\n"
12996                "{};",
12997                Style);
12998   verifyFormat("template <typename X> class Foo\n"
12999                "{};",
13000                Style);
13001   verifyFormat("class Foo\n"
13002                "{\n"
13003                "  Foo();\n"
13004                "};",
13005                Style);
13006   verifyFormat("typedef class Foo\n"
13007                "{\n"
13008                "} Foo_t;",
13009                Style);
13010 
13011   Style.BraceWrapping.SplitEmptyRecord = true;
13012   Style.BraceWrapping.AfterStruct = true;
13013   verifyFormat("class rep\n"
13014                "{\n"
13015                "};",
13016                Style);
13017   verifyFormat("struct rep\n"
13018                "{\n"
13019                "};",
13020                Style);
13021   verifyFormat("template <typename T> class rep\n"
13022                "{\n"
13023                "};",
13024                Style);
13025   verifyFormat("template <typename T> struct rep\n"
13026                "{\n"
13027                "};",
13028                Style);
13029   verifyFormat("class rep\n"
13030                "{\n"
13031                "  int x;\n"
13032                "};",
13033                Style);
13034   verifyFormat("struct rep\n"
13035                "{\n"
13036                "  int x;\n"
13037                "};",
13038                Style);
13039   verifyFormat("template <typename T> class rep\n"
13040                "{\n"
13041                "  int x;\n"
13042                "};",
13043                Style);
13044   verifyFormat("template <typename T> struct rep\n"
13045                "{\n"
13046                "  int x;\n"
13047                "};",
13048                Style);
13049   verifyFormat("template <typename T> class rep // Foo\n"
13050                "{\n"
13051                "  int x;\n"
13052                "};",
13053                Style);
13054   verifyFormat("template <typename T> struct rep // Bar\n"
13055                "{\n"
13056                "  int x;\n"
13057                "};",
13058                Style);
13059 
13060   verifyFormat("template <typename T> class rep<T>\n"
13061                "{\n"
13062                "  int x;\n"
13063                "};",
13064                Style);
13065 
13066   verifyFormat("template <typename T> class rep<std::complex<T>>\n"
13067                "{\n"
13068                "  int x;\n"
13069                "};",
13070                Style);
13071   verifyFormat("template <typename T> class rep<std::complex<T>>\n"
13072                "{\n"
13073                "};",
13074                Style);
13075 
13076   verifyFormat("#include \"stdint.h\"\n"
13077                "namespace rep {}",
13078                Style);
13079   verifyFormat("#include <stdint.h>\n"
13080                "namespace rep {}",
13081                Style);
13082   verifyFormat("#include <stdint.h>\n"
13083                "namespace rep {}",
13084                "#include <stdint.h>\n"
13085                "namespace rep {\n"
13086                "\n"
13087                "\n"
13088                "}",
13089                Style);
13090 }
13091 
13092 TEST_F(FormatTest, SplitEmptyStruct) {
13093   FormatStyle Style = getLLVMStyle();
13094   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
13095   Style.BraceWrapping.AfterStruct = true;
13096   Style.BraceWrapping.SplitEmptyRecord = false;
13097 
13098   verifyFormat("struct Foo\n"
13099                "{};",
13100                Style);
13101   verifyFormat("/* something */ struct Foo\n"
13102                "{};",
13103                Style);
13104   verifyFormat("template <typename X> struct Foo\n"
13105                "{};",
13106                Style);
13107   verifyFormat("struct Foo\n"
13108                "{\n"
13109                "  Foo();\n"
13110                "};",
13111                Style);
13112   verifyFormat("typedef struct Foo\n"
13113                "{\n"
13114                "} Foo_t;",
13115                Style);
13116   // typedef struct Bar {} Bar_t;
13117 }
13118 
13119 TEST_F(FormatTest, SplitEmptyUnion) {
13120   FormatStyle Style = getLLVMStyle();
13121   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
13122   Style.BraceWrapping.AfterUnion = true;
13123   Style.BraceWrapping.SplitEmptyRecord = false;
13124 
13125   verifyFormat("union Foo\n"
13126                "{};",
13127                Style);
13128   verifyFormat("/* something */ union Foo\n"
13129                "{};",
13130                Style);
13131   verifyFormat("union Foo\n"
13132                "{\n"
13133                "  A,\n"
13134                "};",
13135                Style);
13136   verifyFormat("typedef union Foo\n"
13137                "{\n"
13138                "} Foo_t;",
13139                Style);
13140 }
13141 
13142 TEST_F(FormatTest, SplitEmptyNamespace) {
13143   FormatStyle Style = getLLVMStyle();
13144   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
13145   Style.BraceWrapping.AfterNamespace = true;
13146   Style.BraceWrapping.SplitEmptyNamespace = false;
13147 
13148   verifyFormat("namespace Foo\n"
13149                "{};",
13150                Style);
13151   verifyFormat("/* something */ namespace Foo\n"
13152                "{};",
13153                Style);
13154   verifyFormat("inline namespace Foo\n"
13155                "{};",
13156                Style);
13157   verifyFormat("/* something */ inline namespace Foo\n"
13158                "{};",
13159                Style);
13160   verifyFormat("export namespace Foo\n"
13161                "{};",
13162                Style);
13163   verifyFormat("namespace Foo\n"
13164                "{\n"
13165                "void Bar();\n"
13166                "};",
13167                Style);
13168 }
13169 
13170 TEST_F(FormatTest, NeverMergeShortRecords) {
13171   FormatStyle Style = getLLVMStyle();
13172 
13173   verifyFormat("class Foo {\n"
13174                "  Foo();\n"
13175                "};",
13176                Style);
13177   verifyFormat("typedef class Foo {\n"
13178                "  Foo();\n"
13179                "} Foo_t;",
13180                Style);
13181   verifyFormat("struct Foo {\n"
13182                "  Foo();\n"
13183                "};",
13184                Style);
13185   verifyFormat("typedef struct Foo {\n"
13186                "  Foo();\n"
13187                "} Foo_t;",
13188                Style);
13189   verifyFormat("union Foo {\n"
13190                "  A,\n"
13191                "};",
13192                Style);
13193   verifyFormat("typedef union Foo {\n"
13194                "  A,\n"
13195                "} Foo_t;",
13196                Style);
13197   verifyFormat("namespace Foo {\n"
13198                "void Bar();\n"
13199                "};",
13200                Style);
13201 
13202   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
13203   Style.BraceWrapping.AfterClass = true;
13204   Style.BraceWrapping.AfterStruct = true;
13205   Style.BraceWrapping.AfterUnion = true;
13206   Style.BraceWrapping.AfterNamespace = true;
13207   verifyFormat("class Foo\n"
13208                "{\n"
13209                "  Foo();\n"
13210                "};",
13211                Style);
13212   verifyFormat("typedef class Foo\n"
13213                "{\n"
13214                "  Foo();\n"
13215                "} Foo_t;",
13216                Style);
13217   verifyFormat("struct Foo\n"
13218                "{\n"
13219                "  Foo();\n"
13220                "};",
13221                Style);
13222   verifyFormat("typedef struct Foo\n"
13223                "{\n"
13224                "  Foo();\n"
13225                "} Foo_t;",
13226                Style);
13227   verifyFormat("union Foo\n"
13228                "{\n"
13229                "  A,\n"
13230                "};",
13231                Style);
13232   verifyFormat("typedef union Foo\n"
13233                "{\n"
13234                "  A,\n"
13235                "} Foo_t;",
13236                Style);
13237   verifyFormat("namespace Foo\n"
13238                "{\n"
13239                "void Bar();\n"
13240                "};",
13241                Style);
13242 }
13243 
13244 TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
13245   // Elaborate type variable declarations.
13246   verifyFormat("struct foo a = {bar};\nint n;");
13247   verifyFormat("class foo a = {bar};\nint n;");
13248   verifyFormat("union foo a = {bar};\nint n;");
13249 
13250   // Elaborate types inside function definitions.
13251   verifyFormat("struct foo f() {}\nint n;");
13252   verifyFormat("class foo f() {}\nint n;");
13253   verifyFormat("union foo f() {}\nint n;");
13254 
13255   // Templates.
13256   verifyFormat("template <class X> void f() {}\nint n;");
13257   verifyFormat("template <struct X> void f() {}\nint n;");
13258   verifyFormat("template <union X> void f() {}\nint n;");
13259 
13260   // Actual definitions...
13261   verifyFormat("struct {\n} n;");
13262   verifyFormat(
13263       "template <template <class T, class Y>, class Z> class X {\n} n;");
13264   verifyFormat("union Z {\n  int n;\n} x;");
13265   verifyFormat("class MACRO Z {\n} n;");
13266   verifyFormat("class MACRO(X) Z {\n} n;");
13267   verifyFormat("class __attribute__(X) Z {\n} n;");
13268   verifyFormat("class __declspec(X) Z {\n} n;");
13269   verifyFormat("class A##B##C {\n} n;");
13270   verifyFormat("class alignas(16) Z {\n} n;");
13271   verifyFormat("class MACRO(X) alignas(16) Z {\n} n;");
13272   verifyFormat("class MACROA MACRO(X) Z {\n} n;");
13273 
13274   // Redefinition from nested context:
13275   verifyFormat("class A::B::C {\n} n;");
13276 
13277   // Template definitions.
13278   verifyFormat(
13279       "template <typename F>\n"
13280       "Matcher(const Matcher<F> &Other,\n"
13281       "        typename enable_if_c<is_base_of<F, T>::value &&\n"
13282       "                             !is_same<F, T>::value>::type * = 0)\n"
13283       "    : Implementation(new ImplicitCastMatcher<F>(Other)) {}");
13284 
13285   // FIXME: This is still incorrectly handled at the formatter side.
13286   verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};");
13287   verifyFormat("int i = SomeFunction(a<b, a> b);");
13288 
13289   // FIXME:
13290   // This now gets parsed incorrectly as class definition.
13291   // verifyFormat("class A<int> f() {\n}\nint n;");
13292 
13293   // Elaborate types where incorrectly parsing the structural element would
13294   // break the indent.
13295   verifyFormat("if (true)\n"
13296                "  class X x;\n"
13297                "else\n"
13298                "  f();\n");
13299 
13300   // This is simply incomplete. Formatting is not important, but must not crash.
13301   verifyFormat("class A:");
13302 }
13303 
13304 TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
13305   EXPECT_EQ("#error Leave     all         white!!!!! space* alone!\n",
13306             format("#error Leave     all         white!!!!! space* alone!\n"));
13307   EXPECT_EQ(
13308       "#warning Leave     all         white!!!!! space* alone!\n",
13309       format("#warning Leave     all         white!!!!! space* alone!\n"));
13310   EXPECT_EQ("#error 1", format("  #  error   1"));
13311   EXPECT_EQ("#warning 1", format("  #  warning 1"));
13312 }
13313 
13314 TEST_F(FormatTest, FormatHashIfExpressions) {
13315   verifyFormat("#if AAAA && BBBB");
13316   verifyFormat("#if (AAAA && BBBB)");
13317   verifyFormat("#elif (AAAA && BBBB)");
13318   // FIXME: Come up with a better indentation for #elif.
13319   verifyFormat(
13320       "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) &&  \\\n"
13321       "    defined(BBBBBBBB)\n"
13322       "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) &&  \\\n"
13323       "    defined(BBBBBBBB)\n"
13324       "#endif",
13325       getLLVMStyleWithColumns(65));
13326 }
13327 
13328 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
13329   FormatStyle AllowsMergedIf = getGoogleStyle();
13330   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
13331       FormatStyle::SIS_WithoutElse;
13332   verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
13333   verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
13334   verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
13335   EXPECT_EQ("if (true) return 42;",
13336             format("if (true)\nreturn 42;", AllowsMergedIf));
13337   FormatStyle ShortMergedIf = AllowsMergedIf;
13338   ShortMergedIf.ColumnLimit = 25;
13339   verifyFormat("#define A \\\n"
13340                "  if (true) return 42;",
13341                ShortMergedIf);
13342   verifyFormat("#define A \\\n"
13343                "  f();    \\\n"
13344                "  if (true)\n"
13345                "#define B",
13346                ShortMergedIf);
13347   verifyFormat("#define A \\\n"
13348                "  f();    \\\n"
13349                "  if (true)\n"
13350                "g();",
13351                ShortMergedIf);
13352   verifyFormat("{\n"
13353                "#ifdef A\n"
13354                "  // Comment\n"
13355                "  if (true) continue;\n"
13356                "#endif\n"
13357                "  // Comment\n"
13358                "  if (true) continue;\n"
13359                "}",
13360                ShortMergedIf);
13361   ShortMergedIf.ColumnLimit = 33;
13362   verifyFormat("#define A \\\n"
13363                "  if constexpr (true) return 42;",
13364                ShortMergedIf);
13365   verifyFormat("#define A \\\n"
13366                "  if CONSTEXPR (true) return 42;",
13367                ShortMergedIf);
13368   ShortMergedIf.ColumnLimit = 29;
13369   verifyFormat("#define A                   \\\n"
13370                "  if (aaaaaaaaaa) return 1; \\\n"
13371                "  return 2;",
13372                ShortMergedIf);
13373   ShortMergedIf.ColumnLimit = 28;
13374   verifyFormat("#define A         \\\n"
13375                "  if (aaaaaaaaaa) \\\n"
13376                "    return 1;     \\\n"
13377                "  return 2;",
13378                ShortMergedIf);
13379   verifyFormat("#define A                \\\n"
13380                "  if constexpr (aaaaaaa) \\\n"
13381                "    return 1;            \\\n"
13382                "  return 2;",
13383                ShortMergedIf);
13384   verifyFormat("#define A                \\\n"
13385                "  if CONSTEXPR (aaaaaaa) \\\n"
13386                "    return 1;            \\\n"
13387                "  return 2;",
13388                ShortMergedIf);
13389 }
13390 
13391 TEST_F(FormatTest, FormatStarDependingOnContext) {
13392   verifyFormat("void f(int *a);");
13393   verifyFormat("void f() { f(fint * b); }");
13394   verifyFormat("class A {\n  void f(int *a);\n};");
13395   verifyFormat("class A {\n  int *a;\n};");
13396   verifyFormat("namespace a {\n"
13397                "namespace b {\n"
13398                "class A {\n"
13399                "  void f() {}\n"
13400                "  int *a;\n"
13401                "};\n"
13402                "} // namespace b\n"
13403                "} // namespace a");
13404 }
13405 
13406 TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
13407   verifyFormat("while");
13408   verifyFormat("operator");
13409 }
13410 
13411 TEST_F(FormatTest, SkipsDeeplyNestedLines) {
13412   // This code would be painfully slow to format if we didn't skip it.
13413   std::string Code("A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n" // 20x
13414                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
13415                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
13416                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
13417                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
13418                    "A(1, 1)\n"
13419                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n" // 10x
13420                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13421                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13422                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13423                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13424                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13425                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13426                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13427                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
13428                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1);\n");
13429   // Deeply nested part is untouched, rest is formatted.
13430   EXPECT_EQ(std::string("int i;\n") + Code + "int j;\n",
13431             format(std::string("int    i;\n") + Code + "int    j;\n",
13432                    getLLVMStyle(), SC_ExpectIncomplete));
13433 }
13434 
13435 //===----------------------------------------------------------------------===//
13436 // Objective-C tests.
13437 //===----------------------------------------------------------------------===//
13438 
13439 TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
13440   verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
13441   EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
13442             format("-(NSUInteger)indexOfObject:(id)anObject;"));
13443   EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
13444   EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
13445   EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
13446             format("-(NSInteger)Method3:(id)anObject;"));
13447   EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
13448             format("-(NSInteger)Method4:(id)anObject;"));
13449   EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
13450             format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
13451   EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
13452             format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
13453   EXPECT_EQ("- (void)sendAction:(SEL)aSelector to:(id)anObject "
13454             "forAllCells:(BOOL)flag;",
13455             format("- (void)sendAction:(SEL)aSelector to:(id)anObject "
13456                    "forAllCells:(BOOL)flag;"));
13457 
13458   // Very long objectiveC method declaration.
13459   verifyFormat("- (void)aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n"
13460                "    (SoooooooooooooooooooooomeType *)bbbbbbbbbb;");
13461   verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
13462                "                    inRange:(NSRange)range\n"
13463                "                   outRange:(NSRange)out_range\n"
13464                "                  outRange1:(NSRange)out_range1\n"
13465                "                  outRange2:(NSRange)out_range2\n"
13466                "                  outRange3:(NSRange)out_range3\n"
13467                "                  outRange4:(NSRange)out_range4\n"
13468                "                  outRange5:(NSRange)out_range5\n"
13469                "                  outRange6:(NSRange)out_range6\n"
13470                "                  outRange7:(NSRange)out_range7\n"
13471                "                  outRange8:(NSRange)out_range8\n"
13472                "                  outRange9:(NSRange)out_range9;");
13473 
13474   // When the function name has to be wrapped.
13475   FormatStyle Style = getLLVMStyle();
13476   // ObjC ignores IndentWrappedFunctionNames when wrapping methods
13477   // and always indents instead.
13478   Style.IndentWrappedFunctionNames = false;
13479   verifyFormat("- (SomeLooooooooooooooooooooongType *)\n"
13480                "    veryLooooooooooongName:(NSString)aaaaaaaaaaaaaa\n"
13481                "               anotherName:(NSString)bbbbbbbbbbbbbb {\n"
13482                "}",
13483                Style);
13484   Style.IndentWrappedFunctionNames = true;
13485   verifyFormat("- (SomeLooooooooooooooooooooongType *)\n"
13486                "    veryLooooooooooongName:(NSString)cccccccccccccc\n"
13487                "               anotherName:(NSString)dddddddddddddd {\n"
13488                "}",
13489                Style);
13490 
13491   verifyFormat("- (int)sum:(vector<int>)numbers;");
13492   verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
13493   // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
13494   // protocol lists (but not for template classes):
13495   // verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
13496 
13497   verifyFormat("- (int (*)())foo:(int (*)())f;");
13498   verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;");
13499 
13500   // If there's no return type (very rare in practice!), LLVM and Google style
13501   // agree.
13502   verifyFormat("- foo;");
13503   verifyFormat("- foo:(int)f;");
13504   verifyGoogleFormat("- foo:(int)foo;");
13505 }
13506 
13507 TEST_F(FormatTest, BreaksStringLiterals) {
13508   EXPECT_EQ("\"some text \"\n"
13509             "\"other\";",
13510             format("\"some text other\";", getLLVMStyleWithColumns(12)));
13511   EXPECT_EQ("\"some text \"\n"
13512             "\"other\";",
13513             format("\\\n\"some text other\";", getLLVMStyleWithColumns(12)));
13514   EXPECT_EQ(
13515       "#define A  \\\n"
13516       "  \"some \"  \\\n"
13517       "  \"text \"  \\\n"
13518       "  \"other\";",
13519       format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
13520   EXPECT_EQ(
13521       "#define A  \\\n"
13522       "  \"so \"    \\\n"
13523       "  \"text \"  \\\n"
13524       "  \"other\";",
13525       format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
13526 
13527   EXPECT_EQ("\"some text\"",
13528             format("\"some text\"", getLLVMStyleWithColumns(1)));
13529   EXPECT_EQ("\"some text\"",
13530             format("\"some text\"", getLLVMStyleWithColumns(11)));
13531   EXPECT_EQ("\"some \"\n"
13532             "\"text\"",
13533             format("\"some text\"", getLLVMStyleWithColumns(10)));
13534   EXPECT_EQ("\"some \"\n"
13535             "\"text\"",
13536             format("\"some text\"", getLLVMStyleWithColumns(7)));
13537   EXPECT_EQ("\"some\"\n"
13538             "\" tex\"\n"
13539             "\"t\"",
13540             format("\"some text\"", getLLVMStyleWithColumns(6)));
13541   EXPECT_EQ("\"some\"\n"
13542             "\" tex\"\n"
13543             "\" and\"",
13544             format("\"some tex and\"", getLLVMStyleWithColumns(6)));
13545   EXPECT_EQ("\"some\"\n"
13546             "\"/tex\"\n"
13547             "\"/and\"",
13548             format("\"some/tex/and\"", getLLVMStyleWithColumns(6)));
13549 
13550   EXPECT_EQ("variable =\n"
13551             "    \"long string \"\n"
13552             "    \"literal\";",
13553             format("variable = \"long string literal\";",
13554                    getLLVMStyleWithColumns(20)));
13555 
13556   EXPECT_EQ("variable = f(\n"
13557             "    \"long string \"\n"
13558             "    \"literal\",\n"
13559             "    short,\n"
13560             "    loooooooooooooooooooong);",
13561             format("variable = f(\"long string literal\", short, "
13562                    "loooooooooooooooooooong);",
13563                    getLLVMStyleWithColumns(20)));
13564 
13565   EXPECT_EQ(
13566       "f(g(\"long string \"\n"
13567       "    \"literal\"),\n"
13568       "  b);",
13569       format("f(g(\"long string literal\"), b);", getLLVMStyleWithColumns(20)));
13570   EXPECT_EQ("f(g(\"long string \"\n"
13571             "    \"literal\",\n"
13572             "    a),\n"
13573             "  b);",
13574             format("f(g(\"long string literal\", a), b);",
13575                    getLLVMStyleWithColumns(20)));
13576   EXPECT_EQ(
13577       "f(\"one two\".split(\n"
13578       "    variable));",
13579       format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
13580   EXPECT_EQ("f(\"one two three four five six \"\n"
13581             "  \"seven\".split(\n"
13582             "      really_looooong_variable));",
13583             format("f(\"one two three four five six seven\"."
13584                    "split(really_looooong_variable));",
13585                    getLLVMStyleWithColumns(33)));
13586 
13587   EXPECT_EQ("f(\"some \"\n"
13588             "  \"text\",\n"
13589             "  other);",
13590             format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
13591 
13592   // Only break as a last resort.
13593   verifyFormat(
13594       "aaaaaaaaaaaaaaaaaaaa(\n"
13595       "    aaaaaaaaaaaaaaaaaaaa,\n"
13596       "    aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
13597 
13598   EXPECT_EQ("\"splitmea\"\n"
13599             "\"trandomp\"\n"
13600             "\"oint\"",
13601             format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10)));
13602 
13603   EXPECT_EQ("\"split/\"\n"
13604             "\"pathat/\"\n"
13605             "\"slashes\"",
13606             format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
13607 
13608   EXPECT_EQ("\"split/\"\n"
13609             "\"pathat/\"\n"
13610             "\"slashes\"",
13611             format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
13612   EXPECT_EQ("\"split at \"\n"
13613             "\"spaces/at/\"\n"
13614             "\"slashes.at.any$\"\n"
13615             "\"non-alphanumeric%\"\n"
13616             "\"1111111111characte\"\n"
13617             "\"rs\"",
13618             format("\"split at "
13619                    "spaces/at/"
13620                    "slashes.at."
13621                    "any$non-"
13622                    "alphanumeric%"
13623                    "1111111111characte"
13624                    "rs\"",
13625                    getLLVMStyleWithColumns(20)));
13626 
13627   // Verify that splitting the strings understands
13628   // Style::AlwaysBreakBeforeMultilineStrings.
13629   EXPECT_EQ("aaaaaaaaaaaa(\n"
13630             "    \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n"
13631             "    \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");",
13632             format("aaaaaaaaaaaa(\"aaaaaaaaaaaaaaaaaaaaaaaaaa "
13633                    "aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa "
13634                    "aaaaaaaaaaaaaaaaaaaaaa\");",
13635                    getGoogleStyle()));
13636   EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
13637             "       \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";",
13638             format("return \"aaaaaaaaaaaaaaaaaaaaaa "
13639                    "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa "
13640                    "aaaaaaaaaaaaaaaaaaaaaa\";",
13641                    getGoogleStyle()));
13642   EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
13643             "                \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
13644             format("llvm::outs() << "
13645                    "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa"
13646                    "aaaaaaaaaaaaaaaaaaa\";"));
13647   EXPECT_EQ("ffff(\n"
13648             "    {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
13649             "     \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
13650             format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa "
13651                    "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
13652                    getGoogleStyle()));
13653 
13654   FormatStyle Style = getLLVMStyleWithColumns(12);
13655   Style.BreakStringLiterals = false;
13656   EXPECT_EQ("\"some text other\";", format("\"some text other\";", Style));
13657 
13658   FormatStyle AlignLeft = getLLVMStyleWithColumns(12);
13659   AlignLeft.AlignEscapedNewlines = FormatStyle::ENAS_Left;
13660   EXPECT_EQ("#define A \\\n"
13661             "  \"some \" \\\n"
13662             "  \"text \" \\\n"
13663             "  \"other\";",
13664             format("#define A \"some text other\";", AlignLeft));
13665 }
13666 
13667 TEST_F(FormatTest, BreaksStringLiteralsAtColumnLimit) {
13668   EXPECT_EQ("C a = \"some more \"\n"
13669             "      \"text\";",
13670             format("C a = \"some more text\";", getLLVMStyleWithColumns(18)));
13671 }
13672 
13673 TEST_F(FormatTest, FullyRemoveEmptyLines) {
13674   FormatStyle NoEmptyLines = getLLVMStyleWithColumns(80);
13675   NoEmptyLines.MaxEmptyLinesToKeep = 0;
13676   EXPECT_EQ("int i = a(b());",
13677             format("int i=a(\n\n b(\n\n\n )\n\n);", NoEmptyLines));
13678 }
13679 
13680 TEST_F(FormatTest, BreaksStringLiteralsWithTabs) {
13681   EXPECT_EQ(
13682       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
13683       "(\n"
13684       "    \"x\t\");",
13685       format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
13686              "aaaaaaa("
13687              "\"x\t\");"));
13688 }
13689 
13690 TEST_F(FormatTest, BreaksWideAndNSStringLiterals) {
13691   EXPECT_EQ(
13692       "u8\"utf8 string \"\n"
13693       "u8\"literal\";",
13694       format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16)));
13695   EXPECT_EQ(
13696       "u\"utf16 string \"\n"
13697       "u\"literal\";",
13698       format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16)));
13699   EXPECT_EQ(
13700       "U\"utf32 string \"\n"
13701       "U\"literal\";",
13702       format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16)));
13703   EXPECT_EQ("L\"wide string \"\n"
13704             "L\"literal\";",
13705             format("L\"wide string literal\";", getGoogleStyleWithColumns(16)));
13706   EXPECT_EQ("@\"NSString \"\n"
13707             "@\"literal\";",
13708             format("@\"NSString literal\";", getGoogleStyleWithColumns(19)));
13709   verifyFormat(R"(NSString *s = @"那那那那";)", getLLVMStyleWithColumns(26));
13710 
13711   // This input makes clang-format try to split the incomplete unicode escape
13712   // sequence, which used to lead to a crasher.
13713   verifyNoCrash(
13714       "aaaaaaaaaaaaaaaaaaaa = L\"\\udff\"'; // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
13715       getLLVMStyleWithColumns(60));
13716 }
13717 
13718 TEST_F(FormatTest, DoesNotBreakRawStringLiterals) {
13719   FormatStyle Style = getGoogleStyleWithColumns(15);
13720   EXPECT_EQ("R\"x(raw literal)x\";", format("R\"x(raw literal)x\";", Style));
13721   EXPECT_EQ("uR\"x(raw literal)x\";", format("uR\"x(raw literal)x\";", Style));
13722   EXPECT_EQ("LR\"x(raw literal)x\";", format("LR\"x(raw literal)x\";", Style));
13723   EXPECT_EQ("UR\"x(raw literal)x\";", format("UR\"x(raw literal)x\";", Style));
13724   EXPECT_EQ("u8R\"x(raw literal)x\";",
13725             format("u8R\"x(raw literal)x\";", Style));
13726 }
13727 
13728 TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) {
13729   FormatStyle Style = getLLVMStyleWithColumns(20);
13730   EXPECT_EQ(
13731       "_T(\"aaaaaaaaaaaaaa\")\n"
13732       "_T(\"aaaaaaaaaaaaaa\")\n"
13733       "_T(\"aaaaaaaaaaaa\")",
13734       format("  _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style));
13735   EXPECT_EQ("f(x,\n"
13736             "  _T(\"aaaaaaaaaaaa\")\n"
13737             "  _T(\"aaa\"),\n"
13738             "  z);",
13739             format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style));
13740 
13741   // FIXME: Handle embedded spaces in one iteration.
13742   //  EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n"
13743   //            "_T(\"aaaaaaaaaaaaa\")\n"
13744   //            "_T(\"aaaaaaaaaaaaa\")\n"
13745   //            "_T(\"a\")",
13746   //            format("  _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
13747   //                   getLLVMStyleWithColumns(20)));
13748   EXPECT_EQ(
13749       "_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
13750       format("  _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style));
13751   EXPECT_EQ("f(\n"
13752             "#if !TEST\n"
13753             "    _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
13754             "#endif\n"
13755             ");",
13756             format("f(\n"
13757                    "#if !TEST\n"
13758                    "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
13759                    "#endif\n"
13760                    ");"));
13761   EXPECT_EQ("f(\n"
13762             "\n"
13763             "    _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));",
13764             format("f(\n"
13765                    "\n"
13766                    "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));"));
13767   // Regression test for accessing tokens past the end of a vector in the
13768   // TokenLexer.
13769   verifyNoCrash(R"(_T(
13770 "
13771 )
13772 )");
13773 }
13774 
13775 TEST_F(FormatTest, BreaksStringLiteralOperands) {
13776   // In a function call with two operands, the second can be broken with no line
13777   // break before it.
13778   EXPECT_EQ(
13779       "func(a, \"long long \"\n"
13780       "        \"long long\");",
13781       format("func(a, \"long long long long\");", getLLVMStyleWithColumns(24)));
13782   // In a function call with three operands, the second must be broken with a
13783   // line break before it.
13784   EXPECT_EQ("func(a,\n"
13785             "     \"long long long \"\n"
13786             "     \"long\",\n"
13787             "     c);",
13788             format("func(a, \"long long long long\", c);",
13789                    getLLVMStyleWithColumns(24)));
13790   // In a function call with three operands, the third must be broken with a
13791   // line break before it.
13792   EXPECT_EQ("func(a, b,\n"
13793             "     \"long long long \"\n"
13794             "     \"long\");",
13795             format("func(a, b, \"long long long long\");",
13796                    getLLVMStyleWithColumns(24)));
13797   // In a function call with three operands, both the second and the third must
13798   // be broken with a line break before them.
13799   EXPECT_EQ("func(a,\n"
13800             "     \"long long long \"\n"
13801             "     \"long\",\n"
13802             "     \"long long long \"\n"
13803             "     \"long\");",
13804             format("func(a, \"long long long long\", \"long long long long\");",
13805                    getLLVMStyleWithColumns(24)));
13806   // In a chain of << with two operands, the second can be broken with no line
13807   // break before it.
13808   EXPECT_EQ("a << \"line line \"\n"
13809             "     \"line\";",
13810             format("a << \"line line line\";", getLLVMStyleWithColumns(20)));
13811   // In a chain of << with three operands, the second can be broken with no line
13812   // break before it.
13813   EXPECT_EQ(
13814       "abcde << \"line \"\n"
13815       "         \"line line\"\n"
13816       "      << c;",
13817       format("abcde << \"line line line\" << c;", getLLVMStyleWithColumns(20)));
13818   // In a chain of << with three operands, the third must be broken with a line
13819   // break before it.
13820   EXPECT_EQ(
13821       "a << b\n"
13822       "  << \"line line \"\n"
13823       "     \"line\";",
13824       format("a << b << \"line line line\";", getLLVMStyleWithColumns(20)));
13825   // In a chain of << with three operands, the second can be broken with no line
13826   // break before it and the third must be broken with a line break before it.
13827   EXPECT_EQ("abcd << \"line line \"\n"
13828             "        \"line\"\n"
13829             "     << \"line line \"\n"
13830             "        \"line\";",
13831             format("abcd << \"line line line\" << \"line line line\";",
13832                    getLLVMStyleWithColumns(20)));
13833   // In a chain of binary operators with two operands, the second can be broken
13834   // with no line break before it.
13835   EXPECT_EQ(
13836       "abcd + \"line line \"\n"
13837       "       \"line line\";",
13838       format("abcd + \"line line line line\";", getLLVMStyleWithColumns(20)));
13839   // In a chain of binary operators with three operands, the second must be
13840   // broken with a line break before it.
13841   EXPECT_EQ("abcd +\n"
13842             "    \"line line \"\n"
13843             "    \"line line\" +\n"
13844             "    e;",
13845             format("abcd + \"line line line line\" + e;",
13846                    getLLVMStyleWithColumns(20)));
13847   // In a function call with two operands, with AlignAfterOpenBracket enabled,
13848   // the first must be broken with a line break before it.
13849   FormatStyle Style = getLLVMStyleWithColumns(25);
13850   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
13851   EXPECT_EQ("someFunction(\n"
13852             "    \"long long long \"\n"
13853             "    \"long\",\n"
13854             "    a);",
13855             format("someFunction(\"long long long long\", a);", Style));
13856 }
13857 
13858 TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) {
13859   EXPECT_EQ(
13860       "aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
13861       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
13862       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
13863       format("aaaaaaaaaaa  =  \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
13864              "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
13865              "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";"));
13866 }
13867 
13868 TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) {
13869   EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);",
13870             format("f(g(R\"x(raw literal)x\",   a), b);", getGoogleStyle()));
13871   EXPECT_EQ("fffffffffff(g(R\"x(\n"
13872             "multiline raw string literal xxxxxxxxxxxxxx\n"
13873             ")x\",\n"
13874             "              a),\n"
13875             "            b);",
13876             format("fffffffffff(g(R\"x(\n"
13877                    "multiline raw string literal xxxxxxxxxxxxxx\n"
13878                    ")x\", a), b);",
13879                    getGoogleStyleWithColumns(20)));
13880   EXPECT_EQ("fffffffffff(\n"
13881             "    g(R\"x(qqq\n"
13882             "multiline raw string literal xxxxxxxxxxxxxx\n"
13883             ")x\",\n"
13884             "      a),\n"
13885             "    b);",
13886             format("fffffffffff(g(R\"x(qqq\n"
13887                    "multiline raw string literal xxxxxxxxxxxxxx\n"
13888                    ")x\", a), b);",
13889                    getGoogleStyleWithColumns(20)));
13890 
13891   EXPECT_EQ("fffffffffff(R\"x(\n"
13892             "multiline raw string literal xxxxxxxxxxxxxx\n"
13893             ")x\");",
13894             format("fffffffffff(R\"x(\n"
13895                    "multiline raw string literal xxxxxxxxxxxxxx\n"
13896                    ")x\");",
13897                    getGoogleStyleWithColumns(20)));
13898   EXPECT_EQ("fffffffffff(R\"x(\n"
13899             "multiline raw string literal xxxxxxxxxxxxxx\n"
13900             ")x\" + bbbbbb);",
13901             format("fffffffffff(R\"x(\n"
13902                    "multiline raw string literal xxxxxxxxxxxxxx\n"
13903                    ")x\" +   bbbbbb);",
13904                    getGoogleStyleWithColumns(20)));
13905   EXPECT_EQ("fffffffffff(\n"
13906             "    R\"x(\n"
13907             "multiline raw string literal xxxxxxxxxxxxxx\n"
13908             ")x\" +\n"
13909             "    bbbbbb);",
13910             format("fffffffffff(\n"
13911                    " R\"x(\n"
13912                    "multiline raw string literal xxxxxxxxxxxxxx\n"
13913                    ")x\" + bbbbbb);",
13914                    getGoogleStyleWithColumns(20)));
13915   EXPECT_EQ("fffffffffff(R\"(single line raw string)\" + bbbbbb);",
13916             format("fffffffffff(\n"
13917                    " R\"(single line raw string)\" + bbbbbb);"));
13918 }
13919 
13920 TEST_F(FormatTest, SkipsUnknownStringLiterals) {
13921   verifyFormat("string a = \"unterminated;");
13922   EXPECT_EQ("function(\"unterminated,\n"
13923             "         OtherParameter);",
13924             format("function(  \"unterminated,\n"
13925                    "    OtherParameter);"));
13926 }
13927 
13928 TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) {
13929   FormatStyle Style = getLLVMStyle();
13930   Style.Standard = FormatStyle::LS_Cpp03;
13931   EXPECT_EQ("#define x(_a) printf(\"foo\" _a);",
13932             format("#define x(_a) printf(\"foo\"_a);", Style));
13933 }
13934 
13935 TEST_F(FormatTest, CppLexVersion) {
13936   FormatStyle Style = getLLVMStyle();
13937   // Formatting of x * y differs if x is a type.
13938   verifyFormat("void foo() { MACRO(a * b); }", Style);
13939   verifyFormat("void foo() { MACRO(int *b); }", Style);
13940 
13941   // LLVM style uses latest lexer.
13942   verifyFormat("void foo() { MACRO(char8_t *b); }", Style);
13943   Style.Standard = FormatStyle::LS_Cpp17;
13944   // But in c++17, char8_t isn't a keyword.
13945   verifyFormat("void foo() { MACRO(char8_t * b); }", Style);
13946 }
13947 
13948 TEST_F(FormatTest, UnderstandsCpp1y) { verifyFormat("int bi{1'000'000};"); }
13949 
13950 TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) {
13951   EXPECT_EQ("someFunction(\"aaabbbcccd\"\n"
13952             "             \"ddeeefff\");",
13953             format("someFunction(\"aaabbbcccdddeeefff\");",
13954                    getLLVMStyleWithColumns(25)));
13955   EXPECT_EQ("someFunction1234567890(\n"
13956             "    \"aaabbbcccdddeeefff\");",
13957             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
13958                    getLLVMStyleWithColumns(26)));
13959   EXPECT_EQ("someFunction1234567890(\n"
13960             "    \"aaabbbcccdddeeeff\"\n"
13961             "    \"f\");",
13962             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
13963                    getLLVMStyleWithColumns(25)));
13964   EXPECT_EQ("someFunction1234567890(\n"
13965             "    \"aaabbbcccdddeeeff\"\n"
13966             "    \"f\");",
13967             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
13968                    getLLVMStyleWithColumns(24)));
13969   EXPECT_EQ("someFunction(\n"
13970             "    \"aaabbbcc ddde \"\n"
13971             "    \"efff\");",
13972             format("someFunction(\"aaabbbcc ddde efff\");",
13973                    getLLVMStyleWithColumns(25)));
13974   EXPECT_EQ("someFunction(\"aaabbbccc \"\n"
13975             "             \"ddeeefff\");",
13976             format("someFunction(\"aaabbbccc ddeeefff\");",
13977                    getLLVMStyleWithColumns(25)));
13978   EXPECT_EQ("someFunction1234567890(\n"
13979             "    \"aaabb \"\n"
13980             "    \"cccdddeeefff\");",
13981             format("someFunction1234567890(\"aaabb cccdddeeefff\");",
13982                    getLLVMStyleWithColumns(25)));
13983   EXPECT_EQ("#define A          \\\n"
13984             "  string s =       \\\n"
13985             "      \"123456789\"  \\\n"
13986             "      \"0\";         \\\n"
13987             "  int i;",
13988             format("#define A string s = \"1234567890\"; int i;",
13989                    getLLVMStyleWithColumns(20)));
13990   EXPECT_EQ("someFunction(\n"
13991             "    \"aaabbbcc \"\n"
13992             "    \"dddeeefff\");",
13993             format("someFunction(\"aaabbbcc dddeeefff\");",
13994                    getLLVMStyleWithColumns(25)));
13995 }
13996 
13997 TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) {
13998   EXPECT_EQ("\"\\a\"", format("\"\\a\"", getLLVMStyleWithColumns(3)));
13999   EXPECT_EQ("\"\\\"", format("\"\\\"", getLLVMStyleWithColumns(2)));
14000   EXPECT_EQ("\"test\"\n"
14001             "\"\\n\"",
14002             format("\"test\\n\"", getLLVMStyleWithColumns(7)));
14003   EXPECT_EQ("\"tes\\\\\"\n"
14004             "\"n\"",
14005             format("\"tes\\\\n\"", getLLVMStyleWithColumns(7)));
14006   EXPECT_EQ("\"\\\\\\\\\"\n"
14007             "\"\\n\"",
14008             format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7)));
14009   EXPECT_EQ("\"\\uff01\"", format("\"\\uff01\"", getLLVMStyleWithColumns(7)));
14010   EXPECT_EQ("\"\\uff01\"\n"
14011             "\"test\"",
14012             format("\"\\uff01test\"", getLLVMStyleWithColumns(8)));
14013   EXPECT_EQ("\"\\Uff01ff02\"",
14014             format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11)));
14015   EXPECT_EQ("\"\\x000000000001\"\n"
14016             "\"next\"",
14017             format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16)));
14018   EXPECT_EQ("\"\\x000000000001next\"",
14019             format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15)));
14020   EXPECT_EQ("\"\\x000000000001\"",
14021             format("\"\\x000000000001\"", getLLVMStyleWithColumns(7)));
14022   EXPECT_EQ("\"test\"\n"
14023             "\"\\000000\"\n"
14024             "\"000001\"",
14025             format("\"test\\000000000001\"", getLLVMStyleWithColumns(9)));
14026   EXPECT_EQ("\"test\\000\"\n"
14027             "\"00000000\"\n"
14028             "\"1\"",
14029             format("\"test\\000000000001\"", getLLVMStyleWithColumns(10)));
14030 }
14031 
14032 TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) {
14033   verifyFormat("void f() {\n"
14034                "  return g() {}\n"
14035                "  void h() {}");
14036   verifyFormat("int a[] = {void forgot_closing_brace(){f();\n"
14037                "g();\n"
14038                "}");
14039 }
14040 
14041 TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) {
14042   verifyFormat(
14043       "void f() { return C{param1, param2}.SomeCall(param1, param2); }");
14044 }
14045 
14046 TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) {
14047   verifyFormat("class X {\n"
14048                "  void f() {\n"
14049                "  }\n"
14050                "};",
14051                getLLVMStyleWithColumns(12));
14052 }
14053 
14054 TEST_F(FormatTest, ConfigurableIndentWidth) {
14055   FormatStyle EightIndent = getLLVMStyleWithColumns(18);
14056   EightIndent.IndentWidth = 8;
14057   EightIndent.ContinuationIndentWidth = 8;
14058   verifyFormat("void f() {\n"
14059                "        someFunction();\n"
14060                "        if (true) {\n"
14061                "                f();\n"
14062                "        }\n"
14063                "}",
14064                EightIndent);
14065   verifyFormat("class X {\n"
14066                "        void f() {\n"
14067                "        }\n"
14068                "};",
14069                EightIndent);
14070   verifyFormat("int x[] = {\n"
14071                "        call(),\n"
14072                "        call()};",
14073                EightIndent);
14074 }
14075 
14076 TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) {
14077   verifyFormat("double\n"
14078                "f();",
14079                getLLVMStyleWithColumns(8));
14080 }
14081 
14082 TEST_F(FormatTest, ConfigurableUseOfTab) {
14083   FormatStyle Tab = getLLVMStyleWithColumns(42);
14084   Tab.IndentWidth = 8;
14085   Tab.UseTab = FormatStyle::UT_Always;
14086   Tab.AlignEscapedNewlines = FormatStyle::ENAS_Left;
14087 
14088   EXPECT_EQ("if (aaaaaaaa && // q\n"
14089             "    bb)\t\t// w\n"
14090             "\t;",
14091             format("if (aaaaaaaa &&// q\n"
14092                    "bb)// w\n"
14093                    ";",
14094                    Tab));
14095   EXPECT_EQ("if (aaa && bbb) // w\n"
14096             "\t;",
14097             format("if(aaa&&bbb)// w\n"
14098                    ";",
14099                    Tab));
14100 
14101   verifyFormat("class X {\n"
14102                "\tvoid f() {\n"
14103                "\t\tsomeFunction(parameter1,\n"
14104                "\t\t\t     parameter2);\n"
14105                "\t}\n"
14106                "};",
14107                Tab);
14108   verifyFormat("#define A                        \\\n"
14109                "\tvoid f() {               \\\n"
14110                "\t\tsomeFunction(    \\\n"
14111                "\t\t    parameter1,  \\\n"
14112                "\t\t    parameter2); \\\n"
14113                "\t}",
14114                Tab);
14115   verifyFormat("int a;\t      // x\n"
14116                "int bbbbbbbb; // x\n",
14117                Tab);
14118 
14119   Tab.TabWidth = 4;
14120   Tab.IndentWidth = 8;
14121   verifyFormat("class TabWidth4Indent8 {\n"
14122                "\t\tvoid f() {\n"
14123                "\t\t\t\tsomeFunction(parameter1,\n"
14124                "\t\t\t\t\t\t\t parameter2);\n"
14125                "\t\t}\n"
14126                "};",
14127                Tab);
14128 
14129   Tab.TabWidth = 4;
14130   Tab.IndentWidth = 4;
14131   verifyFormat("class TabWidth4Indent4 {\n"
14132                "\tvoid f() {\n"
14133                "\t\tsomeFunction(parameter1,\n"
14134                "\t\t\t\t\t parameter2);\n"
14135                "\t}\n"
14136                "};",
14137                Tab);
14138 
14139   Tab.TabWidth = 8;
14140   Tab.IndentWidth = 4;
14141   verifyFormat("class TabWidth8Indent4 {\n"
14142                "    void f() {\n"
14143                "\tsomeFunction(parameter1,\n"
14144                "\t\t     parameter2);\n"
14145                "    }\n"
14146                "};",
14147                Tab);
14148 
14149   Tab.TabWidth = 8;
14150   Tab.IndentWidth = 8;
14151   EXPECT_EQ("/*\n"
14152             "\t      a\t\tcomment\n"
14153             "\t      in multiple lines\n"
14154             "       */",
14155             format("   /*\t \t \n"
14156                    " \t \t a\t\tcomment\t \t\n"
14157                    " \t \t in multiple lines\t\n"
14158                    " \t  */",
14159                    Tab));
14160 
14161   Tab.UseTab = FormatStyle::UT_ForIndentation;
14162   verifyFormat("{\n"
14163                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14164                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14165                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14166                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14167                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14168                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14169                "};",
14170                Tab);
14171   verifyFormat("enum AA {\n"
14172                "\ta1, // Force multiple lines\n"
14173                "\ta2,\n"
14174                "\ta3\n"
14175                "};",
14176                Tab);
14177   EXPECT_EQ("if (aaaaaaaa && // q\n"
14178             "    bb)         // w\n"
14179             "\t;",
14180             format("if (aaaaaaaa &&// q\n"
14181                    "bb)// w\n"
14182                    ";",
14183                    Tab));
14184   verifyFormat("class X {\n"
14185                "\tvoid f() {\n"
14186                "\t\tsomeFunction(parameter1,\n"
14187                "\t\t             parameter2);\n"
14188                "\t}\n"
14189                "};",
14190                Tab);
14191   verifyFormat("{\n"
14192                "\tQ(\n"
14193                "\t    {\n"
14194                "\t\t    int a;\n"
14195                "\t\t    someFunction(aaaaaaaa,\n"
14196                "\t\t                 bbbbbbb);\n"
14197                "\t    },\n"
14198                "\t    p);\n"
14199                "}",
14200                Tab);
14201   EXPECT_EQ("{\n"
14202             "\t/* aaaa\n"
14203             "\t   bbbb */\n"
14204             "}",
14205             format("{\n"
14206                    "/* aaaa\n"
14207                    "   bbbb */\n"
14208                    "}",
14209                    Tab));
14210   EXPECT_EQ("{\n"
14211             "\t/*\n"
14212             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14213             "\t  bbbbbbbbbbbbb\n"
14214             "\t*/\n"
14215             "}",
14216             format("{\n"
14217                    "/*\n"
14218                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14219                    "*/\n"
14220                    "}",
14221                    Tab));
14222   EXPECT_EQ("{\n"
14223             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14224             "\t// bbbbbbbbbbbbb\n"
14225             "}",
14226             format("{\n"
14227                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14228                    "}",
14229                    Tab));
14230   EXPECT_EQ("{\n"
14231             "\t/*\n"
14232             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14233             "\t  bbbbbbbbbbbbb\n"
14234             "\t*/\n"
14235             "}",
14236             format("{\n"
14237                    "\t/*\n"
14238                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14239                    "\t*/\n"
14240                    "}",
14241                    Tab));
14242   EXPECT_EQ("{\n"
14243             "\t/*\n"
14244             "\n"
14245             "\t*/\n"
14246             "}",
14247             format("{\n"
14248                    "\t/*\n"
14249                    "\n"
14250                    "\t*/\n"
14251                    "}",
14252                    Tab));
14253   EXPECT_EQ("{\n"
14254             "\t/*\n"
14255             " asdf\n"
14256             "\t*/\n"
14257             "}",
14258             format("{\n"
14259                    "\t/*\n"
14260                    " asdf\n"
14261                    "\t*/\n"
14262                    "}",
14263                    Tab));
14264 
14265   verifyFormat("void f() {\n"
14266                "\treturn true ? aaaaaaaaaaaaaaaaaa\n"
14267                "\t            : bbbbbbbbbbbbbbbbbb\n"
14268                "}",
14269                Tab);
14270   FormatStyle TabNoBreak = Tab;
14271   TabNoBreak.BreakBeforeTernaryOperators = false;
14272   verifyFormat("void f() {\n"
14273                "\treturn true ? aaaaaaaaaaaaaaaaaa :\n"
14274                "\t              bbbbbbbbbbbbbbbbbb\n"
14275                "}",
14276                TabNoBreak);
14277   verifyFormat("void f() {\n"
14278                "\treturn true ?\n"
14279                "\t           aaaaaaaaaaaaaaaaaaaa :\n"
14280                "\t           bbbbbbbbbbbbbbbbbbbb\n"
14281                "}",
14282                TabNoBreak);
14283 
14284   Tab.UseTab = FormatStyle::UT_Never;
14285   EXPECT_EQ("/*\n"
14286             "              a\t\tcomment\n"
14287             "              in multiple lines\n"
14288             "       */",
14289             format("   /*\t \t \n"
14290                    " \t \t a\t\tcomment\t \t\n"
14291                    " \t \t in multiple lines\t\n"
14292                    " \t  */",
14293                    Tab));
14294   EXPECT_EQ("/* some\n"
14295             "   comment */",
14296             format(" \t \t /* some\n"
14297                    " \t \t    comment */",
14298                    Tab));
14299   EXPECT_EQ("int a; /* some\n"
14300             "   comment */",
14301             format(" \t \t int a; /* some\n"
14302                    " \t \t    comment */",
14303                    Tab));
14304 
14305   EXPECT_EQ("int a; /* some\n"
14306             "comment */",
14307             format(" \t \t int\ta; /* some\n"
14308                    " \t \t    comment */",
14309                    Tab));
14310   EXPECT_EQ("f(\"\t\t\"); /* some\n"
14311             "    comment */",
14312             format(" \t \t f(\"\t\t\"); /* some\n"
14313                    " \t \t    comment */",
14314                    Tab));
14315   EXPECT_EQ("{\n"
14316             "        /*\n"
14317             "         * Comment\n"
14318             "         */\n"
14319             "        int i;\n"
14320             "}",
14321             format("{\n"
14322                    "\t/*\n"
14323                    "\t * Comment\n"
14324                    "\t */\n"
14325                    "\t int i;\n"
14326                    "}",
14327                    Tab));
14328 
14329   Tab.UseTab = FormatStyle::UT_ForContinuationAndIndentation;
14330   Tab.TabWidth = 8;
14331   Tab.IndentWidth = 8;
14332   EXPECT_EQ("if (aaaaaaaa && // q\n"
14333             "    bb)         // w\n"
14334             "\t;",
14335             format("if (aaaaaaaa &&// q\n"
14336                    "bb)// w\n"
14337                    ";",
14338                    Tab));
14339   EXPECT_EQ("if (aaa && bbb) // w\n"
14340             "\t;",
14341             format("if(aaa&&bbb)// w\n"
14342                    ";",
14343                    Tab));
14344   verifyFormat("class X {\n"
14345                "\tvoid f() {\n"
14346                "\t\tsomeFunction(parameter1,\n"
14347                "\t\t\t     parameter2);\n"
14348                "\t}\n"
14349                "};",
14350                Tab);
14351   verifyFormat("#define A                        \\\n"
14352                "\tvoid f() {               \\\n"
14353                "\t\tsomeFunction(    \\\n"
14354                "\t\t    parameter1,  \\\n"
14355                "\t\t    parameter2); \\\n"
14356                "\t}",
14357                Tab);
14358   Tab.TabWidth = 4;
14359   Tab.IndentWidth = 8;
14360   verifyFormat("class TabWidth4Indent8 {\n"
14361                "\t\tvoid f() {\n"
14362                "\t\t\t\tsomeFunction(parameter1,\n"
14363                "\t\t\t\t\t\t\t parameter2);\n"
14364                "\t\t}\n"
14365                "};",
14366                Tab);
14367   Tab.TabWidth = 4;
14368   Tab.IndentWidth = 4;
14369   verifyFormat("class TabWidth4Indent4 {\n"
14370                "\tvoid f() {\n"
14371                "\t\tsomeFunction(parameter1,\n"
14372                "\t\t\t\t\t parameter2);\n"
14373                "\t}\n"
14374                "};",
14375                Tab);
14376   Tab.TabWidth = 8;
14377   Tab.IndentWidth = 4;
14378   verifyFormat("class TabWidth8Indent4 {\n"
14379                "    void f() {\n"
14380                "\tsomeFunction(parameter1,\n"
14381                "\t\t     parameter2);\n"
14382                "    }\n"
14383                "};",
14384                Tab);
14385   Tab.TabWidth = 8;
14386   Tab.IndentWidth = 8;
14387   EXPECT_EQ("/*\n"
14388             "\t      a\t\tcomment\n"
14389             "\t      in multiple lines\n"
14390             "       */",
14391             format("   /*\t \t \n"
14392                    " \t \t a\t\tcomment\t \t\n"
14393                    " \t \t in multiple lines\t\n"
14394                    " \t  */",
14395                    Tab));
14396   verifyFormat("{\n"
14397                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14398                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14399                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14400                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14401                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14402                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14403                "};",
14404                Tab);
14405   verifyFormat("enum AA {\n"
14406                "\ta1, // Force multiple lines\n"
14407                "\ta2,\n"
14408                "\ta3\n"
14409                "};",
14410                Tab);
14411   EXPECT_EQ("if (aaaaaaaa && // q\n"
14412             "    bb)         // w\n"
14413             "\t;",
14414             format("if (aaaaaaaa &&// q\n"
14415                    "bb)// w\n"
14416                    ";",
14417                    Tab));
14418   verifyFormat("class X {\n"
14419                "\tvoid f() {\n"
14420                "\t\tsomeFunction(parameter1,\n"
14421                "\t\t\t     parameter2);\n"
14422                "\t}\n"
14423                "};",
14424                Tab);
14425   verifyFormat("{\n"
14426                "\tQ(\n"
14427                "\t    {\n"
14428                "\t\t    int a;\n"
14429                "\t\t    someFunction(aaaaaaaa,\n"
14430                "\t\t\t\t bbbbbbb);\n"
14431                "\t    },\n"
14432                "\t    p);\n"
14433                "}",
14434                Tab);
14435   EXPECT_EQ("{\n"
14436             "\t/* aaaa\n"
14437             "\t   bbbb */\n"
14438             "}",
14439             format("{\n"
14440                    "/* aaaa\n"
14441                    "   bbbb */\n"
14442                    "}",
14443                    Tab));
14444   EXPECT_EQ("{\n"
14445             "\t/*\n"
14446             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14447             "\t  bbbbbbbbbbbbb\n"
14448             "\t*/\n"
14449             "}",
14450             format("{\n"
14451                    "/*\n"
14452                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14453                    "*/\n"
14454                    "}",
14455                    Tab));
14456   EXPECT_EQ("{\n"
14457             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14458             "\t// bbbbbbbbbbbbb\n"
14459             "}",
14460             format("{\n"
14461                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14462                    "}",
14463                    Tab));
14464   EXPECT_EQ("{\n"
14465             "\t/*\n"
14466             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14467             "\t  bbbbbbbbbbbbb\n"
14468             "\t*/\n"
14469             "}",
14470             format("{\n"
14471                    "\t/*\n"
14472                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14473                    "\t*/\n"
14474                    "}",
14475                    Tab));
14476   EXPECT_EQ("{\n"
14477             "\t/*\n"
14478             "\n"
14479             "\t*/\n"
14480             "}",
14481             format("{\n"
14482                    "\t/*\n"
14483                    "\n"
14484                    "\t*/\n"
14485                    "}",
14486                    Tab));
14487   EXPECT_EQ("{\n"
14488             "\t/*\n"
14489             " asdf\n"
14490             "\t*/\n"
14491             "}",
14492             format("{\n"
14493                    "\t/*\n"
14494                    " asdf\n"
14495                    "\t*/\n"
14496                    "}",
14497                    Tab));
14498   EXPECT_EQ("/* some\n"
14499             "   comment */",
14500             format(" \t \t /* some\n"
14501                    " \t \t    comment */",
14502                    Tab));
14503   EXPECT_EQ("int a; /* some\n"
14504             "   comment */",
14505             format(" \t \t int a; /* some\n"
14506                    " \t \t    comment */",
14507                    Tab));
14508   EXPECT_EQ("int a; /* some\n"
14509             "comment */",
14510             format(" \t \t int\ta; /* some\n"
14511                    " \t \t    comment */",
14512                    Tab));
14513   EXPECT_EQ("f(\"\t\t\"); /* some\n"
14514             "    comment */",
14515             format(" \t \t f(\"\t\t\"); /* some\n"
14516                    " \t \t    comment */",
14517                    Tab));
14518   EXPECT_EQ("{\n"
14519             "\t/*\n"
14520             "\t * Comment\n"
14521             "\t */\n"
14522             "\tint i;\n"
14523             "}",
14524             format("{\n"
14525                    "\t/*\n"
14526                    "\t * Comment\n"
14527                    "\t */\n"
14528                    "\t int i;\n"
14529                    "}",
14530                    Tab));
14531   Tab.TabWidth = 2;
14532   Tab.IndentWidth = 2;
14533   EXPECT_EQ("{\n"
14534             "\t/* aaaa\n"
14535             "\t\t bbbb */\n"
14536             "}",
14537             format("{\n"
14538                    "/* aaaa\n"
14539                    "\t bbbb */\n"
14540                    "}",
14541                    Tab));
14542   EXPECT_EQ("{\n"
14543             "\t/*\n"
14544             "\t\taaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14545             "\t\tbbbbbbbbbbbbb\n"
14546             "\t*/\n"
14547             "}",
14548             format("{\n"
14549                    "/*\n"
14550                    "\taaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14551                    "*/\n"
14552                    "}",
14553                    Tab));
14554   Tab.AlignConsecutiveAssignments.Enabled = true;
14555   Tab.AlignConsecutiveDeclarations.Enabled = true;
14556   Tab.TabWidth = 4;
14557   Tab.IndentWidth = 4;
14558   verifyFormat("class Assign {\n"
14559                "\tvoid f() {\n"
14560                "\t\tint         x      = 123;\n"
14561                "\t\tint         random = 4;\n"
14562                "\t\tstd::string alphabet =\n"
14563                "\t\t\t\"abcdefghijklmnopqrstuvwxyz\";\n"
14564                "\t}\n"
14565                "};",
14566                Tab);
14567 
14568   Tab.UseTab = FormatStyle::UT_AlignWithSpaces;
14569   Tab.TabWidth = 8;
14570   Tab.IndentWidth = 8;
14571   EXPECT_EQ("if (aaaaaaaa && // q\n"
14572             "    bb)         // w\n"
14573             "\t;",
14574             format("if (aaaaaaaa &&// q\n"
14575                    "bb)// w\n"
14576                    ";",
14577                    Tab));
14578   EXPECT_EQ("if (aaa && bbb) // w\n"
14579             "\t;",
14580             format("if(aaa&&bbb)// w\n"
14581                    ";",
14582                    Tab));
14583   verifyFormat("class X {\n"
14584                "\tvoid f() {\n"
14585                "\t\tsomeFunction(parameter1,\n"
14586                "\t\t             parameter2);\n"
14587                "\t}\n"
14588                "};",
14589                Tab);
14590   verifyFormat("#define A                        \\\n"
14591                "\tvoid f() {               \\\n"
14592                "\t\tsomeFunction(    \\\n"
14593                "\t\t    parameter1,  \\\n"
14594                "\t\t    parameter2); \\\n"
14595                "\t}",
14596                Tab);
14597   Tab.TabWidth = 4;
14598   Tab.IndentWidth = 8;
14599   verifyFormat("class TabWidth4Indent8 {\n"
14600                "\t\tvoid f() {\n"
14601                "\t\t\t\tsomeFunction(parameter1,\n"
14602                "\t\t\t\t             parameter2);\n"
14603                "\t\t}\n"
14604                "};",
14605                Tab);
14606   Tab.TabWidth = 4;
14607   Tab.IndentWidth = 4;
14608   verifyFormat("class TabWidth4Indent4 {\n"
14609                "\tvoid f() {\n"
14610                "\t\tsomeFunction(parameter1,\n"
14611                "\t\t             parameter2);\n"
14612                "\t}\n"
14613                "};",
14614                Tab);
14615   Tab.TabWidth = 8;
14616   Tab.IndentWidth = 4;
14617   verifyFormat("class TabWidth8Indent4 {\n"
14618                "    void f() {\n"
14619                "\tsomeFunction(parameter1,\n"
14620                "\t             parameter2);\n"
14621                "    }\n"
14622                "};",
14623                Tab);
14624   Tab.TabWidth = 8;
14625   Tab.IndentWidth = 8;
14626   EXPECT_EQ("/*\n"
14627             "              a\t\tcomment\n"
14628             "              in multiple lines\n"
14629             "       */",
14630             format("   /*\t \t \n"
14631                    " \t \t a\t\tcomment\t \t\n"
14632                    " \t \t in multiple lines\t\n"
14633                    " \t  */",
14634                    Tab));
14635   verifyFormat("{\n"
14636                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14637                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14638                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14639                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14640                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14641                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
14642                "};",
14643                Tab);
14644   verifyFormat("enum AA {\n"
14645                "\ta1, // Force multiple lines\n"
14646                "\ta2,\n"
14647                "\ta3\n"
14648                "};",
14649                Tab);
14650   EXPECT_EQ("if (aaaaaaaa && // q\n"
14651             "    bb)         // w\n"
14652             "\t;",
14653             format("if (aaaaaaaa &&// q\n"
14654                    "bb)// w\n"
14655                    ";",
14656                    Tab));
14657   verifyFormat("class X {\n"
14658                "\tvoid f() {\n"
14659                "\t\tsomeFunction(parameter1,\n"
14660                "\t\t             parameter2);\n"
14661                "\t}\n"
14662                "};",
14663                Tab);
14664   verifyFormat("{\n"
14665                "\tQ(\n"
14666                "\t    {\n"
14667                "\t\t    int a;\n"
14668                "\t\t    someFunction(aaaaaaaa,\n"
14669                "\t\t                 bbbbbbb);\n"
14670                "\t    },\n"
14671                "\t    p);\n"
14672                "}",
14673                Tab);
14674   EXPECT_EQ("{\n"
14675             "\t/* aaaa\n"
14676             "\t   bbbb */\n"
14677             "}",
14678             format("{\n"
14679                    "/* aaaa\n"
14680                    "   bbbb */\n"
14681                    "}",
14682                    Tab));
14683   EXPECT_EQ("{\n"
14684             "\t/*\n"
14685             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14686             "\t  bbbbbbbbbbbbb\n"
14687             "\t*/\n"
14688             "}",
14689             format("{\n"
14690                    "/*\n"
14691                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14692                    "*/\n"
14693                    "}",
14694                    Tab));
14695   EXPECT_EQ("{\n"
14696             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14697             "\t// bbbbbbbbbbbbb\n"
14698             "}",
14699             format("{\n"
14700                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14701                    "}",
14702                    Tab));
14703   EXPECT_EQ("{\n"
14704             "\t/*\n"
14705             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14706             "\t  bbbbbbbbbbbbb\n"
14707             "\t*/\n"
14708             "}",
14709             format("{\n"
14710                    "\t/*\n"
14711                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14712                    "\t*/\n"
14713                    "}",
14714                    Tab));
14715   EXPECT_EQ("{\n"
14716             "\t/*\n"
14717             "\n"
14718             "\t*/\n"
14719             "}",
14720             format("{\n"
14721                    "\t/*\n"
14722                    "\n"
14723                    "\t*/\n"
14724                    "}",
14725                    Tab));
14726   EXPECT_EQ("{\n"
14727             "\t/*\n"
14728             " asdf\n"
14729             "\t*/\n"
14730             "}",
14731             format("{\n"
14732                    "\t/*\n"
14733                    " asdf\n"
14734                    "\t*/\n"
14735                    "}",
14736                    Tab));
14737   EXPECT_EQ("/* some\n"
14738             "   comment */",
14739             format(" \t \t /* some\n"
14740                    " \t \t    comment */",
14741                    Tab));
14742   EXPECT_EQ("int a; /* some\n"
14743             "   comment */",
14744             format(" \t \t int a; /* some\n"
14745                    " \t \t    comment */",
14746                    Tab));
14747   EXPECT_EQ("int a; /* some\n"
14748             "comment */",
14749             format(" \t \t int\ta; /* some\n"
14750                    " \t \t    comment */",
14751                    Tab));
14752   EXPECT_EQ("f(\"\t\t\"); /* some\n"
14753             "    comment */",
14754             format(" \t \t f(\"\t\t\"); /* some\n"
14755                    " \t \t    comment */",
14756                    Tab));
14757   EXPECT_EQ("{\n"
14758             "\t/*\n"
14759             "\t * Comment\n"
14760             "\t */\n"
14761             "\tint i;\n"
14762             "}",
14763             format("{\n"
14764                    "\t/*\n"
14765                    "\t * Comment\n"
14766                    "\t */\n"
14767                    "\t int i;\n"
14768                    "}",
14769                    Tab));
14770   Tab.TabWidth = 2;
14771   Tab.IndentWidth = 2;
14772   EXPECT_EQ("{\n"
14773             "\t/* aaaa\n"
14774             "\t   bbbb */\n"
14775             "}",
14776             format("{\n"
14777                    "/* aaaa\n"
14778                    "   bbbb */\n"
14779                    "}",
14780                    Tab));
14781   EXPECT_EQ("{\n"
14782             "\t/*\n"
14783             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
14784             "\t  bbbbbbbbbbbbb\n"
14785             "\t*/\n"
14786             "}",
14787             format("{\n"
14788                    "/*\n"
14789                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
14790                    "*/\n"
14791                    "}",
14792                    Tab));
14793   Tab.AlignConsecutiveAssignments.Enabled = true;
14794   Tab.AlignConsecutiveDeclarations.Enabled = true;
14795   Tab.TabWidth = 4;
14796   Tab.IndentWidth = 4;
14797   verifyFormat("class Assign {\n"
14798                "\tvoid f() {\n"
14799                "\t\tint         x      = 123;\n"
14800                "\t\tint         random = 4;\n"
14801                "\t\tstd::string alphabet =\n"
14802                "\t\t\t\"abcdefghijklmnopqrstuvwxyz\";\n"
14803                "\t}\n"
14804                "};",
14805                Tab);
14806   Tab.AlignOperands = FormatStyle::OAS_Align;
14807   verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb +\n"
14808                "                 cccccccccccccccccccc;",
14809                Tab);
14810   // no alignment
14811   verifyFormat("int aaaaaaaaaa =\n"
14812                "\tbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
14813                Tab);
14814   verifyFormat("return aaaaaaaaaaaaaaaa ? 111111111111111\n"
14815                "       : bbbbbbbbbbbbbb ? 222222222222222\n"
14816                "                        : 333333333333333;",
14817                Tab);
14818   Tab.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
14819   Tab.AlignOperands = FormatStyle::OAS_AlignAfterOperator;
14820   verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb\n"
14821                "               + cccccccccccccccccccc;",
14822                Tab);
14823 }
14824 
14825 TEST_F(FormatTest, ZeroTabWidth) {
14826   FormatStyle Tab = getLLVMStyleWithColumns(42);
14827   Tab.IndentWidth = 8;
14828   Tab.UseTab = FormatStyle::UT_Never;
14829   Tab.TabWidth = 0;
14830   EXPECT_EQ("void a(){\n"
14831             "    // line starts with '\t'\n"
14832             "};",
14833             format("void a(){\n"
14834                    "\t// line starts with '\t'\n"
14835                    "};",
14836                    Tab));
14837 
14838   EXPECT_EQ("void a(){\n"
14839             "    // line starts with '\t'\n"
14840             "};",
14841             format("void a(){\n"
14842                    "\t\t// line starts with '\t'\n"
14843                    "};",
14844                    Tab));
14845 
14846   Tab.UseTab = FormatStyle::UT_ForIndentation;
14847   EXPECT_EQ("void a(){\n"
14848             "    // line starts with '\t'\n"
14849             "};",
14850             format("void a(){\n"
14851                    "\t// line starts with '\t'\n"
14852                    "};",
14853                    Tab));
14854 
14855   EXPECT_EQ("void a(){\n"
14856             "    // line starts with '\t'\n"
14857             "};",
14858             format("void a(){\n"
14859                    "\t\t// line starts with '\t'\n"
14860                    "};",
14861                    Tab));
14862 
14863   Tab.UseTab = FormatStyle::UT_ForContinuationAndIndentation;
14864   EXPECT_EQ("void a(){\n"
14865             "    // line starts with '\t'\n"
14866             "};",
14867             format("void a(){\n"
14868                    "\t// line starts with '\t'\n"
14869                    "};",
14870                    Tab));
14871 
14872   EXPECT_EQ("void a(){\n"
14873             "    // line starts with '\t'\n"
14874             "};",
14875             format("void a(){\n"
14876                    "\t\t// line starts with '\t'\n"
14877                    "};",
14878                    Tab));
14879 
14880   Tab.UseTab = FormatStyle::UT_AlignWithSpaces;
14881   EXPECT_EQ("void a(){\n"
14882             "    // line starts with '\t'\n"
14883             "};",
14884             format("void a(){\n"
14885                    "\t// line starts with '\t'\n"
14886                    "};",
14887                    Tab));
14888 
14889   EXPECT_EQ("void a(){\n"
14890             "    // line starts with '\t'\n"
14891             "};",
14892             format("void a(){\n"
14893                    "\t\t// line starts with '\t'\n"
14894                    "};",
14895                    Tab));
14896 
14897   Tab.UseTab = FormatStyle::UT_Always;
14898   EXPECT_EQ("void a(){\n"
14899             "// line starts with '\t'\n"
14900             "};",
14901             format("void a(){\n"
14902                    "\t// line starts with '\t'\n"
14903                    "};",
14904                    Tab));
14905 
14906   EXPECT_EQ("void a(){\n"
14907             "// line starts with '\t'\n"
14908             "};",
14909             format("void a(){\n"
14910                    "\t\t// line starts with '\t'\n"
14911                    "};",
14912                    Tab));
14913 }
14914 
14915 TEST_F(FormatTest, CalculatesOriginalColumn) {
14916   EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
14917             "q\"; /* some\n"
14918             "       comment */",
14919             format("  \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
14920                    "q\"; /* some\n"
14921                    "       comment */",
14922                    getLLVMStyle()));
14923   EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
14924             "/* some\n"
14925             "   comment */",
14926             format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
14927                    " /* some\n"
14928                    "    comment */",
14929                    getLLVMStyle()));
14930   EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
14931             "qqq\n"
14932             "/* some\n"
14933             "   comment */",
14934             format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
14935                    "qqq\n"
14936                    " /* some\n"
14937                    "    comment */",
14938                    getLLVMStyle()));
14939   EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
14940             "wwww; /* some\n"
14941             "         comment */",
14942             format("  inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
14943                    "wwww; /* some\n"
14944                    "         comment */",
14945                    getLLVMStyle()));
14946 }
14947 
14948 TEST_F(FormatTest, ConfigurableSpaceBeforeParens) {
14949   FormatStyle NoSpace = getLLVMStyle();
14950   NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never;
14951 
14952   verifyFormat("while(true)\n"
14953                "  continue;",
14954                NoSpace);
14955   verifyFormat("for(;;)\n"
14956                "  continue;",
14957                NoSpace);
14958   verifyFormat("if(true)\n"
14959                "  f();\n"
14960                "else if(true)\n"
14961                "  f();",
14962                NoSpace);
14963   verifyFormat("do {\n"
14964                "  do_something();\n"
14965                "} while(something());",
14966                NoSpace);
14967   verifyFormat("switch(x) {\n"
14968                "default:\n"
14969                "  break;\n"
14970                "}",
14971                NoSpace);
14972   verifyFormat("auto i = std::make_unique<int>(5);", NoSpace);
14973   verifyFormat("size_t x = sizeof(x);", NoSpace);
14974   verifyFormat("auto f(int x) -> decltype(x);", NoSpace);
14975   verifyFormat("auto f(int x) -> typeof(x);", NoSpace);
14976   verifyFormat("auto f(int x) -> _Atomic(x);", NoSpace);
14977   verifyFormat("auto f(int x) -> __underlying_type(x);", NoSpace);
14978   verifyFormat("int f(T x) noexcept(x.create());", NoSpace);
14979   verifyFormat("alignas(128) char a[128];", NoSpace);
14980   verifyFormat("size_t x = alignof(MyType);", NoSpace);
14981   verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace);
14982   verifyFormat("int f() throw(Deprecated);", NoSpace);
14983   verifyFormat("typedef void (*cb)(int);", NoSpace);
14984   verifyFormat("T A::operator()();", NoSpace);
14985   verifyFormat("X A::operator++(T);", NoSpace);
14986   verifyFormat("auto lambda = []() { return 0; };", NoSpace);
14987 
14988   FormatStyle Space = getLLVMStyle();
14989   Space.SpaceBeforeParens = FormatStyle::SBPO_Always;
14990 
14991   verifyFormat("int f ();", Space);
14992   verifyFormat("void f (int a, T b) {\n"
14993                "  while (true)\n"
14994                "    continue;\n"
14995                "}",
14996                Space);
14997   verifyFormat("if (true)\n"
14998                "  f ();\n"
14999                "else if (true)\n"
15000                "  f ();",
15001                Space);
15002   verifyFormat("do {\n"
15003                "  do_something ();\n"
15004                "} while (something ());",
15005                Space);
15006   verifyFormat("switch (x) {\n"
15007                "default:\n"
15008                "  break;\n"
15009                "}",
15010                Space);
15011   verifyFormat("A::A () : a (1) {}", Space);
15012   verifyFormat("void f () __attribute__ ((asdf));", Space);
15013   verifyFormat("*(&a + 1);\n"
15014                "&((&a)[1]);\n"
15015                "a[(b + c) * d];\n"
15016                "(((a + 1) * 2) + 3) * 4;",
15017                Space);
15018   verifyFormat("#define A(x) x", Space);
15019   verifyFormat("#define A (x) x", Space);
15020   verifyFormat("#if defined(x)\n"
15021                "#endif",
15022                Space);
15023   verifyFormat("auto i = std::make_unique<int> (5);", Space);
15024   verifyFormat("size_t x = sizeof (x);", Space);
15025   verifyFormat("auto f (int x) -> decltype (x);", Space);
15026   verifyFormat("auto f (int x) -> typeof (x);", Space);
15027   verifyFormat("auto f (int x) -> _Atomic (x);", Space);
15028   verifyFormat("auto f (int x) -> __underlying_type (x);", Space);
15029   verifyFormat("int f (T x) noexcept (x.create ());", Space);
15030   verifyFormat("alignas (128) char a[128];", Space);
15031   verifyFormat("size_t x = alignof (MyType);", Space);
15032   verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space);
15033   verifyFormat("int f () throw (Deprecated);", Space);
15034   verifyFormat("typedef void (*cb) (int);", Space);
15035   // FIXME these tests regressed behaviour.
15036   // verifyFormat("T A::operator() ();", Space);
15037   // verifyFormat("X A::operator++ (T);", Space);
15038   verifyFormat("auto lambda = [] () { return 0; };", Space);
15039   verifyFormat("int x = int (y);", Space);
15040 
15041   FormatStyle SomeSpace = getLLVMStyle();
15042   SomeSpace.SpaceBeforeParens = FormatStyle::SBPO_NonEmptyParentheses;
15043 
15044   verifyFormat("[]() -> float {}", SomeSpace);
15045   verifyFormat("[] (auto foo) {}", SomeSpace);
15046   verifyFormat("[foo]() -> int {}", SomeSpace);
15047   verifyFormat("int f();", SomeSpace);
15048   verifyFormat("void f (int a, T b) {\n"
15049                "  while (true)\n"
15050                "    continue;\n"
15051                "}",
15052                SomeSpace);
15053   verifyFormat("if (true)\n"
15054                "  f();\n"
15055                "else if (true)\n"
15056                "  f();",
15057                SomeSpace);
15058   verifyFormat("do {\n"
15059                "  do_something();\n"
15060                "} while (something());",
15061                SomeSpace);
15062   verifyFormat("switch (x) {\n"
15063                "default:\n"
15064                "  break;\n"
15065                "}",
15066                SomeSpace);
15067   verifyFormat("A::A() : a (1) {}", SomeSpace);
15068   verifyFormat("void f() __attribute__ ((asdf));", SomeSpace);
15069   verifyFormat("*(&a + 1);\n"
15070                "&((&a)[1]);\n"
15071                "a[(b + c) * d];\n"
15072                "(((a + 1) * 2) + 3) * 4;",
15073                SomeSpace);
15074   verifyFormat("#define A(x) x", SomeSpace);
15075   verifyFormat("#define A (x) x", SomeSpace);
15076   verifyFormat("#if defined(x)\n"
15077                "#endif",
15078                SomeSpace);
15079   verifyFormat("auto i = std::make_unique<int> (5);", SomeSpace);
15080   verifyFormat("size_t x = sizeof (x);", SomeSpace);
15081   verifyFormat("auto f (int x) -> decltype (x);", SomeSpace);
15082   verifyFormat("auto f (int x) -> typeof (x);", SomeSpace);
15083   verifyFormat("auto f (int x) -> _Atomic (x);", SomeSpace);
15084   verifyFormat("auto f (int x) -> __underlying_type (x);", SomeSpace);
15085   verifyFormat("int f (T x) noexcept (x.create());", SomeSpace);
15086   verifyFormat("alignas (128) char a[128];", SomeSpace);
15087   verifyFormat("size_t x = alignof (MyType);", SomeSpace);
15088   verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");",
15089                SomeSpace);
15090   verifyFormat("int f() throw (Deprecated);", SomeSpace);
15091   verifyFormat("typedef void (*cb) (int);", SomeSpace);
15092   verifyFormat("T A::operator()();", SomeSpace);
15093   // FIXME these tests regressed behaviour.
15094   // verifyFormat("X A::operator++ (T);", SomeSpace);
15095   verifyFormat("int x = int (y);", SomeSpace);
15096   verifyFormat("auto lambda = []() { return 0; };", SomeSpace);
15097 
15098   FormatStyle SpaceControlStatements = getLLVMStyle();
15099   SpaceControlStatements.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15100   SpaceControlStatements.SpaceBeforeParensOptions.AfterControlStatements = true;
15101 
15102   verifyFormat("while (true)\n"
15103                "  continue;",
15104                SpaceControlStatements);
15105   verifyFormat("if (true)\n"
15106                "  f();\n"
15107                "else if (true)\n"
15108                "  f();",
15109                SpaceControlStatements);
15110   verifyFormat("for (;;) {\n"
15111                "  do_something();\n"
15112                "}",
15113                SpaceControlStatements);
15114   verifyFormat("do {\n"
15115                "  do_something();\n"
15116                "} while (something());",
15117                SpaceControlStatements);
15118   verifyFormat("switch (x) {\n"
15119                "default:\n"
15120                "  break;\n"
15121                "}",
15122                SpaceControlStatements);
15123 
15124   FormatStyle SpaceFuncDecl = getLLVMStyle();
15125   SpaceFuncDecl.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15126   SpaceFuncDecl.SpaceBeforeParensOptions.AfterFunctionDeclarationName = true;
15127 
15128   verifyFormat("int f ();", SpaceFuncDecl);
15129   verifyFormat("void f(int a, T b) {}", SpaceFuncDecl);
15130   verifyFormat("A::A() : a(1) {}", SpaceFuncDecl);
15131   verifyFormat("void f () __attribute__((asdf));", SpaceFuncDecl);
15132   verifyFormat("#define A(x) x", SpaceFuncDecl);
15133   verifyFormat("#define A (x) x", SpaceFuncDecl);
15134   verifyFormat("#if defined(x)\n"
15135                "#endif",
15136                SpaceFuncDecl);
15137   verifyFormat("auto i = std::make_unique<int>(5);", SpaceFuncDecl);
15138   verifyFormat("size_t x = sizeof(x);", SpaceFuncDecl);
15139   verifyFormat("auto f (int x) -> decltype(x);", SpaceFuncDecl);
15140   verifyFormat("auto f (int x) -> typeof(x);", SpaceFuncDecl);
15141   verifyFormat("auto f (int x) -> _Atomic(x);", SpaceFuncDecl);
15142   verifyFormat("auto f (int x) -> __underlying_type(x);", SpaceFuncDecl);
15143   verifyFormat("int f (T x) noexcept(x.create());", SpaceFuncDecl);
15144   verifyFormat("alignas(128) char a[128];", SpaceFuncDecl);
15145   verifyFormat("size_t x = alignof(MyType);", SpaceFuncDecl);
15146   verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");",
15147                SpaceFuncDecl);
15148   verifyFormat("int f () throw(Deprecated);", SpaceFuncDecl);
15149   verifyFormat("typedef void (*cb)(int);", SpaceFuncDecl);
15150   // FIXME these tests regressed behaviour.
15151   // verifyFormat("T A::operator() ();", SpaceFuncDecl);
15152   // verifyFormat("X A::operator++ (T);", SpaceFuncDecl);
15153   verifyFormat("T A::operator()() {}", SpaceFuncDecl);
15154   verifyFormat("auto lambda = []() { return 0; };", SpaceFuncDecl);
15155   verifyFormat("int x = int(y);", SpaceFuncDecl);
15156   verifyFormat("M(std::size_t R, std::size_t C) : C(C), data(R) {}",
15157                SpaceFuncDecl);
15158 
15159   FormatStyle SpaceFuncDef = getLLVMStyle();
15160   SpaceFuncDef.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15161   SpaceFuncDef.SpaceBeforeParensOptions.AfterFunctionDefinitionName = true;
15162 
15163   verifyFormat("int f();", SpaceFuncDef);
15164   verifyFormat("void f (int a, T b) {}", SpaceFuncDef);
15165   verifyFormat("A::A() : a(1) {}", SpaceFuncDef);
15166   verifyFormat("void f() __attribute__((asdf));", SpaceFuncDef);
15167   verifyFormat("#define A(x) x", SpaceFuncDef);
15168   verifyFormat("#define A (x) x", SpaceFuncDef);
15169   verifyFormat("#if defined(x)\n"
15170                "#endif",
15171                SpaceFuncDef);
15172   verifyFormat("auto i = std::make_unique<int>(5);", SpaceFuncDef);
15173   verifyFormat("size_t x = sizeof(x);", SpaceFuncDef);
15174   verifyFormat("auto f(int x) -> decltype(x);", SpaceFuncDef);
15175   verifyFormat("auto f(int x) -> typeof(x);", SpaceFuncDef);
15176   verifyFormat("auto f(int x) -> _Atomic(x);", SpaceFuncDef);
15177   verifyFormat("auto f(int x) -> __underlying_type(x);", SpaceFuncDef);
15178   verifyFormat("int f(T x) noexcept(x.create());", SpaceFuncDef);
15179   verifyFormat("alignas(128) char a[128];", SpaceFuncDef);
15180   verifyFormat("size_t x = alignof(MyType);", SpaceFuncDef);
15181   verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");",
15182                SpaceFuncDef);
15183   verifyFormat("int f() throw(Deprecated);", SpaceFuncDef);
15184   verifyFormat("typedef void (*cb)(int);", SpaceFuncDef);
15185   verifyFormat("T A::operator()();", SpaceFuncDef);
15186   verifyFormat("X A::operator++(T);", SpaceFuncDef);
15187   // verifyFormat("T A::operator() () {}", SpaceFuncDef);
15188   verifyFormat("auto lambda = [] () { return 0; };", SpaceFuncDef);
15189   verifyFormat("int x = int(y);", SpaceFuncDef);
15190   verifyFormat("M(std::size_t R, std::size_t C) : C(C), data(R) {}",
15191                SpaceFuncDef);
15192 
15193   FormatStyle SpaceIfMacros = getLLVMStyle();
15194   SpaceIfMacros.IfMacros.clear();
15195   SpaceIfMacros.IfMacros.push_back("MYIF");
15196   SpaceIfMacros.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15197   SpaceIfMacros.SpaceBeforeParensOptions.AfterIfMacros = true;
15198   verifyFormat("MYIF (a)\n  return;", SpaceIfMacros);
15199   verifyFormat("MYIF (a)\n  return;\nelse MYIF (b)\n  return;", SpaceIfMacros);
15200   verifyFormat("MYIF (a)\n  return;\nelse\n  return;", SpaceIfMacros);
15201 
15202   FormatStyle SpaceForeachMacros = getLLVMStyle();
15203   EXPECT_EQ(SpaceForeachMacros.AllowShortBlocksOnASingleLine,
15204             FormatStyle::SBS_Never);
15205   EXPECT_EQ(SpaceForeachMacros.AllowShortLoopsOnASingleLine, false);
15206   SpaceForeachMacros.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15207   SpaceForeachMacros.SpaceBeforeParensOptions.AfterForeachMacros = true;
15208   verifyFormat("for (;;) {\n"
15209                "}",
15210                SpaceForeachMacros);
15211   verifyFormat("foreach (Item *item, itemlist) {\n"
15212                "}",
15213                SpaceForeachMacros);
15214   verifyFormat("Q_FOREACH (Item *item, itemlist) {\n"
15215                "}",
15216                SpaceForeachMacros);
15217   verifyFormat("BOOST_FOREACH (Item *item, itemlist) {\n"
15218                "}",
15219                SpaceForeachMacros);
15220   verifyFormat("UNKNOWN_FOREACH(Item *item, itemlist) {}", SpaceForeachMacros);
15221 
15222   FormatStyle SomeSpace2 = getLLVMStyle();
15223   SomeSpace2.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15224   SomeSpace2.SpaceBeforeParensOptions.BeforeNonEmptyParentheses = true;
15225   verifyFormat("[]() -> float {}", SomeSpace2);
15226   verifyFormat("[] (auto foo) {}", SomeSpace2);
15227   verifyFormat("[foo]() -> int {}", SomeSpace2);
15228   verifyFormat("int f();", SomeSpace2);
15229   verifyFormat("void f (int a, T b) {\n"
15230                "  while (true)\n"
15231                "    continue;\n"
15232                "}",
15233                SomeSpace2);
15234   verifyFormat("if (true)\n"
15235                "  f();\n"
15236                "else if (true)\n"
15237                "  f();",
15238                SomeSpace2);
15239   verifyFormat("do {\n"
15240                "  do_something();\n"
15241                "} while (something());",
15242                SomeSpace2);
15243   verifyFormat("switch (x) {\n"
15244                "default:\n"
15245                "  break;\n"
15246                "}",
15247                SomeSpace2);
15248   verifyFormat("A::A() : a (1) {}", SomeSpace2);
15249   verifyFormat("void f() __attribute__ ((asdf));", SomeSpace2);
15250   verifyFormat("*(&a + 1);\n"
15251                "&((&a)[1]);\n"
15252                "a[(b + c) * d];\n"
15253                "(((a + 1) * 2) + 3) * 4;",
15254                SomeSpace2);
15255   verifyFormat("#define A(x) x", SomeSpace2);
15256   verifyFormat("#define A (x) x", SomeSpace2);
15257   verifyFormat("#if defined(x)\n"
15258                "#endif",
15259                SomeSpace2);
15260   verifyFormat("auto i = std::make_unique<int> (5);", SomeSpace2);
15261   verifyFormat("size_t x = sizeof (x);", SomeSpace2);
15262   verifyFormat("auto f (int x) -> decltype (x);", SomeSpace2);
15263   verifyFormat("auto f (int x) -> typeof (x);", SomeSpace2);
15264   verifyFormat("auto f (int x) -> _Atomic (x);", SomeSpace2);
15265   verifyFormat("auto f (int x) -> __underlying_type (x);", SomeSpace2);
15266   verifyFormat("int f (T x) noexcept (x.create());", SomeSpace2);
15267   verifyFormat("alignas (128) char a[128];", SomeSpace2);
15268   verifyFormat("size_t x = alignof (MyType);", SomeSpace2);
15269   verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");",
15270                SomeSpace2);
15271   verifyFormat("int f() throw (Deprecated);", SomeSpace2);
15272   verifyFormat("typedef void (*cb) (int);", SomeSpace2);
15273   verifyFormat("T A::operator()();", SomeSpace2);
15274   // verifyFormat("X A::operator++ (T);", SomeSpace2);
15275   verifyFormat("int x = int (y);", SomeSpace2);
15276   verifyFormat("auto lambda = []() { return 0; };", SomeSpace2);
15277 
15278   FormatStyle SpaceAfterOverloadedOperator = getLLVMStyle();
15279   SpaceAfterOverloadedOperator.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15280   SpaceAfterOverloadedOperator.SpaceBeforeParensOptions
15281       .AfterOverloadedOperator = true;
15282 
15283   verifyFormat("auto operator++ () -> int;", SpaceAfterOverloadedOperator);
15284   verifyFormat("X A::operator++ ();", SpaceAfterOverloadedOperator);
15285   verifyFormat("some_object.operator++ ();", SpaceAfterOverloadedOperator);
15286   verifyFormat("auto func() -> int;", SpaceAfterOverloadedOperator);
15287 
15288   SpaceAfterOverloadedOperator.SpaceBeforeParensOptions
15289       .AfterOverloadedOperator = false;
15290 
15291   verifyFormat("auto operator++() -> int;", SpaceAfterOverloadedOperator);
15292   verifyFormat("X A::operator++();", SpaceAfterOverloadedOperator);
15293   verifyFormat("some_object.operator++();", SpaceAfterOverloadedOperator);
15294   verifyFormat("auto func() -> int;", SpaceAfterOverloadedOperator);
15295 
15296   auto SpaceAfterRequires = getLLVMStyle();
15297   SpaceAfterRequires.SpaceBeforeParens = FormatStyle::SBPO_Custom;
15298   EXPECT_FALSE(
15299       SpaceAfterRequires.SpaceBeforeParensOptions.AfterRequiresInClause);
15300   EXPECT_FALSE(
15301       SpaceAfterRequires.SpaceBeforeParensOptions.AfterRequiresInExpression);
15302   verifyFormat("void f(auto x)\n"
15303                "  requires requires(int i) { x + i; }\n"
15304                "{}",
15305                SpaceAfterRequires);
15306   verifyFormat("void f(auto x)\n"
15307                "  requires(requires(int i) { x + i; })\n"
15308                "{}",
15309                SpaceAfterRequires);
15310   verifyFormat("if (requires(int i) { x + i; })\n"
15311                "  return;",
15312                SpaceAfterRequires);
15313   verifyFormat("bool b = requires(int i) { x + i; };", SpaceAfterRequires);
15314   verifyFormat("template <typename T>\n"
15315                "  requires(Foo<T>)\n"
15316                "class Bar;",
15317                SpaceAfterRequires);
15318 
15319   SpaceAfterRequires.SpaceBeforeParensOptions.AfterRequiresInClause = true;
15320   verifyFormat("void f(auto x)\n"
15321                "  requires requires(int i) { x + i; }\n"
15322                "{}",
15323                SpaceAfterRequires);
15324   verifyFormat("void f(auto x)\n"
15325                "  requires (requires(int i) { x + i; })\n"
15326                "{}",
15327                SpaceAfterRequires);
15328   verifyFormat("if (requires(int i) { x + i; })\n"
15329                "  return;",
15330                SpaceAfterRequires);
15331   verifyFormat("bool b = requires(int i) { x + i; };", SpaceAfterRequires);
15332   verifyFormat("template <typename T>\n"
15333                "  requires (Foo<T>)\n"
15334                "class Bar;",
15335                SpaceAfterRequires);
15336 
15337   SpaceAfterRequires.SpaceBeforeParensOptions.AfterRequiresInClause = false;
15338   SpaceAfterRequires.SpaceBeforeParensOptions.AfterRequiresInExpression = true;
15339   verifyFormat("void f(auto x)\n"
15340                "  requires requires (int i) { x + i; }\n"
15341                "{}",
15342                SpaceAfterRequires);
15343   verifyFormat("void f(auto x)\n"
15344                "  requires(requires (int i) { x + i; })\n"
15345                "{}",
15346                SpaceAfterRequires);
15347   verifyFormat("if (requires (int i) { x + i; })\n"
15348                "  return;",
15349                SpaceAfterRequires);
15350   verifyFormat("bool b = requires (int i) { x + i; };", SpaceAfterRequires);
15351   verifyFormat("template <typename T>\n"
15352                "  requires(Foo<T>)\n"
15353                "class Bar;",
15354                SpaceAfterRequires);
15355 
15356   SpaceAfterRequires.SpaceBeforeParensOptions.AfterRequiresInClause = true;
15357   verifyFormat("void f(auto x)\n"
15358                "  requires requires (int i) { x + i; }\n"
15359                "{}",
15360                SpaceAfterRequires);
15361   verifyFormat("void f(auto x)\n"
15362                "  requires (requires (int i) { x + i; })\n"
15363                "{}",
15364                SpaceAfterRequires);
15365   verifyFormat("if (requires (int i) { x + i; })\n"
15366                "  return;",
15367                SpaceAfterRequires);
15368   verifyFormat("bool b = requires (int i) { x + i; };", SpaceAfterRequires);
15369   verifyFormat("template <typename T>\n"
15370                "  requires (Foo<T>)\n"
15371                "class Bar;",
15372                SpaceAfterRequires);
15373 }
15374 
15375 TEST_F(FormatTest, SpaceAfterLogicalNot) {
15376   FormatStyle Spaces = getLLVMStyle();
15377   Spaces.SpaceAfterLogicalNot = true;
15378 
15379   verifyFormat("bool x = ! y", Spaces);
15380   verifyFormat("if (! isFailure())", Spaces);
15381   verifyFormat("if (! (a && b))", Spaces);
15382   verifyFormat("\"Error!\"", Spaces);
15383   verifyFormat("! ! x", Spaces);
15384 }
15385 
15386 TEST_F(FormatTest, ConfigurableSpacesInParentheses) {
15387   FormatStyle Spaces = getLLVMStyle();
15388 
15389   Spaces.SpacesInParentheses = true;
15390   verifyFormat("do_something( ::globalVar );", Spaces);
15391   verifyFormat("call( x, y, z );", Spaces);
15392   verifyFormat("call();", Spaces);
15393   verifyFormat("std::function<void( int, int )> callback;", Spaces);
15394   verifyFormat("void inFunction() { std::function<void( int, int )> fct; }",
15395                Spaces);
15396   verifyFormat("while ( (bool)1 )\n"
15397                "  continue;",
15398                Spaces);
15399   verifyFormat("for ( ;; )\n"
15400                "  continue;",
15401                Spaces);
15402   verifyFormat("if ( true )\n"
15403                "  f();\n"
15404                "else if ( true )\n"
15405                "  f();",
15406                Spaces);
15407   verifyFormat("do {\n"
15408                "  do_something( (int)i );\n"
15409                "} while ( something() );",
15410                Spaces);
15411   verifyFormat("switch ( x ) {\n"
15412                "default:\n"
15413                "  break;\n"
15414                "}",
15415                Spaces);
15416 
15417   Spaces.SpacesInParentheses = false;
15418   Spaces.SpacesInCStyleCastParentheses = true;
15419   verifyFormat("Type *A = ( Type * )P;", Spaces);
15420   verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces);
15421   verifyFormat("x = ( int32 )y;", Spaces);
15422   verifyFormat("int a = ( int )(2.0f);", Spaces);
15423   verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces);
15424   verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces);
15425   verifyFormat("#define x (( int )-1)", Spaces);
15426 
15427   // Run the first set of tests again with:
15428   Spaces.SpacesInParentheses = false;
15429   Spaces.SpaceInEmptyParentheses = true;
15430   Spaces.SpacesInCStyleCastParentheses = true;
15431   verifyFormat("call(x, y, z);", Spaces);
15432   verifyFormat("call( );", Spaces);
15433   verifyFormat("std::function<void(int, int)> callback;", Spaces);
15434   verifyFormat("while (( bool )1)\n"
15435                "  continue;",
15436                Spaces);
15437   verifyFormat("for (;;)\n"
15438                "  continue;",
15439                Spaces);
15440   verifyFormat("if (true)\n"
15441                "  f( );\n"
15442                "else if (true)\n"
15443                "  f( );",
15444                Spaces);
15445   verifyFormat("do {\n"
15446                "  do_something(( int )i);\n"
15447                "} while (something( ));",
15448                Spaces);
15449   verifyFormat("switch (x) {\n"
15450                "default:\n"
15451                "  break;\n"
15452                "}",
15453                Spaces);
15454 
15455   // Run the first set of tests again with:
15456   Spaces.SpaceAfterCStyleCast = true;
15457   verifyFormat("call(x, y, z);", Spaces);
15458   verifyFormat("call( );", Spaces);
15459   verifyFormat("std::function<void(int, int)> callback;", Spaces);
15460   verifyFormat("while (( bool ) 1)\n"
15461                "  continue;",
15462                Spaces);
15463   verifyFormat("for (;;)\n"
15464                "  continue;",
15465                Spaces);
15466   verifyFormat("if (true)\n"
15467                "  f( );\n"
15468                "else if (true)\n"
15469                "  f( );",
15470                Spaces);
15471   verifyFormat("do {\n"
15472                "  do_something(( int ) i);\n"
15473                "} while (something( ));",
15474                Spaces);
15475   verifyFormat("switch (x) {\n"
15476                "default:\n"
15477                "  break;\n"
15478                "}",
15479                Spaces);
15480   verifyFormat("#define CONF_BOOL(x) ( bool * ) ( void * ) (x)", Spaces);
15481   verifyFormat("#define CONF_BOOL(x) ( bool * ) (x)", Spaces);
15482   verifyFormat("#define CONF_BOOL(x) ( bool ) (x)", Spaces);
15483   verifyFormat("bool *y = ( bool * ) ( void * ) (x);", Spaces);
15484   verifyFormat("bool *y = ( bool * ) (x);", Spaces);
15485 
15486   // Run subset of tests again with:
15487   Spaces.SpacesInCStyleCastParentheses = false;
15488   Spaces.SpaceAfterCStyleCast = true;
15489   verifyFormat("while ((bool) 1)\n"
15490                "  continue;",
15491                Spaces);
15492   verifyFormat("do {\n"
15493                "  do_something((int) i);\n"
15494                "} while (something( ));",
15495                Spaces);
15496 
15497   verifyFormat("size_t idx = (size_t) (ptr - ((char *) file));", Spaces);
15498   verifyFormat("size_t idx = (size_t) a;", Spaces);
15499   verifyFormat("size_t idx = (size_t) (a - 1);", Spaces);
15500   verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
15501   verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
15502   verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
15503   verifyFormat("size_t idx = (*(foo))(a - 1);", Spaces);
15504   verifyFormat("#define CONF_BOOL(x) (bool *) (void *) (x)", Spaces);
15505   verifyFormat("#define CONF_BOOL(x) (bool *) (void *) (int) (x)", Spaces);
15506   verifyFormat("bool *y = (bool *) (void *) (x);", Spaces);
15507   verifyFormat("bool *y = (bool *) (void *) (int) (x);", Spaces);
15508   verifyFormat("bool *y = (bool *) (void *) (int) foo(x);", Spaces);
15509   Spaces.ColumnLimit = 80;
15510   Spaces.IndentWidth = 4;
15511   Spaces.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
15512   verifyFormat("void foo( ) {\n"
15513                "    size_t foo = (*(function))(\n"
15514                "        Foooo, Barrrrr, Foooo, Barrrr, FoooooooooLooooong, "
15515                "BarrrrrrrrrrrrLong,\n"
15516                "        FoooooooooLooooong);\n"
15517                "}",
15518                Spaces);
15519   Spaces.SpaceAfterCStyleCast = false;
15520   verifyFormat("size_t idx = (size_t)(ptr - ((char *)file));", Spaces);
15521   verifyFormat("size_t idx = (size_t)a;", Spaces);
15522   verifyFormat("size_t idx = (size_t)(a - 1);", Spaces);
15523   verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
15524   verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
15525   verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
15526   verifyFormat("size_t idx = (*(foo))(a - 1);", Spaces);
15527 
15528   verifyFormat("void foo( ) {\n"
15529                "    size_t foo = (*(function))(\n"
15530                "        Foooo, Barrrrr, Foooo, Barrrr, FoooooooooLooooong, "
15531                "BarrrrrrrrrrrrLong,\n"
15532                "        FoooooooooLooooong);\n"
15533                "}",
15534                Spaces);
15535 }
15536 
15537 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) {
15538   verifyFormat("int a[5];");
15539   verifyFormat("a[3] += 42;");
15540 
15541   FormatStyle Spaces = getLLVMStyle();
15542   Spaces.SpacesInSquareBrackets = true;
15543   // Not lambdas.
15544   verifyFormat("int a[ 5 ];", Spaces);
15545   verifyFormat("a[ 3 ] += 42;", Spaces);
15546   verifyFormat("constexpr char hello[]{\"hello\"};", Spaces);
15547   verifyFormat("double &operator[](int i) { return 0; }\n"
15548                "int i;",
15549                Spaces);
15550   verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces);
15551   verifyFormat("int i = a[ a ][ a ]->f();", Spaces);
15552   verifyFormat("int i = (*b)[ a ]->f();", Spaces);
15553   // Lambdas.
15554   verifyFormat("int c = []() -> int { return 2; }();\n", Spaces);
15555   verifyFormat("return [ i, args... ] {};", Spaces);
15556   verifyFormat("int foo = [ &bar ]() {};", Spaces);
15557   verifyFormat("int foo = [ = ]() {};", Spaces);
15558   verifyFormat("int foo = [ & ]() {};", Spaces);
15559   verifyFormat("int foo = [ =, &bar ]() {};", Spaces);
15560   verifyFormat("int foo = [ &bar, = ]() {};", Spaces);
15561 }
15562 
15563 TEST_F(FormatTest, ConfigurableSpaceBeforeBrackets) {
15564   FormatStyle NoSpaceStyle = getLLVMStyle();
15565   verifyFormat("int a[5];", NoSpaceStyle);
15566   verifyFormat("a[3] += 42;", NoSpaceStyle);
15567 
15568   verifyFormat("int a[1];", NoSpaceStyle);
15569   verifyFormat("int 1 [a];", NoSpaceStyle);
15570   verifyFormat("int a[1][2];", NoSpaceStyle);
15571   verifyFormat("a[7] = 5;", NoSpaceStyle);
15572   verifyFormat("int a = (f())[23];", NoSpaceStyle);
15573   verifyFormat("f([] {})", NoSpaceStyle);
15574 
15575   FormatStyle Space = getLLVMStyle();
15576   Space.SpaceBeforeSquareBrackets = true;
15577   verifyFormat("int c = []() -> int { return 2; }();\n", Space);
15578   verifyFormat("return [i, args...] {};", Space);
15579 
15580   verifyFormat("int a [5];", Space);
15581   verifyFormat("a [3] += 42;", Space);
15582   verifyFormat("constexpr char hello []{\"hello\"};", Space);
15583   verifyFormat("double &operator[](int i) { return 0; }\n"
15584                "int i;",
15585                Space);
15586   verifyFormat("std::unique_ptr<int []> foo() {}", Space);
15587   verifyFormat("int i = a [a][a]->f();", Space);
15588   verifyFormat("int i = (*b) [a]->f();", Space);
15589 
15590   verifyFormat("int a [1];", Space);
15591   verifyFormat("int 1 [a];", Space);
15592   verifyFormat("int a [1][2];", Space);
15593   verifyFormat("a [7] = 5;", Space);
15594   verifyFormat("int a = (f()) [23];", Space);
15595   verifyFormat("f([] {})", Space);
15596 }
15597 
15598 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) {
15599   verifyFormat("int a = 5;");
15600   verifyFormat("a += 42;");
15601   verifyFormat("a or_eq 8;");
15602 
15603   FormatStyle Spaces = getLLVMStyle();
15604   Spaces.SpaceBeforeAssignmentOperators = false;
15605   verifyFormat("int a= 5;", Spaces);
15606   verifyFormat("a+= 42;", Spaces);
15607   verifyFormat("a or_eq 8;", Spaces);
15608 }
15609 
15610 TEST_F(FormatTest, ConfigurableSpaceBeforeColon) {
15611   verifyFormat("class Foo : public Bar {};");
15612   verifyFormat("Foo::Foo() : foo(1) {}");
15613   verifyFormat("for (auto a : b) {\n}");
15614   verifyFormat("int x = a ? b : c;");
15615   verifyFormat("{\n"
15616                "label0:\n"
15617                "  int x = 0;\n"
15618                "}");
15619   verifyFormat("switch (x) {\n"
15620                "case 1:\n"
15621                "default:\n"
15622                "}");
15623   verifyFormat("switch (allBraces) {\n"
15624                "case 1: {\n"
15625                "  break;\n"
15626                "}\n"
15627                "case 2: {\n"
15628                "  [[fallthrough]];\n"
15629                "}\n"
15630                "default: {\n"
15631                "  break;\n"
15632                "}\n"
15633                "}");
15634 
15635   FormatStyle CtorInitializerStyle = getLLVMStyleWithColumns(30);
15636   CtorInitializerStyle.SpaceBeforeCtorInitializerColon = false;
15637   verifyFormat("class Foo : public Bar {};", CtorInitializerStyle);
15638   verifyFormat("Foo::Foo(): foo(1) {}", CtorInitializerStyle);
15639   verifyFormat("for (auto a : b) {\n}", CtorInitializerStyle);
15640   verifyFormat("int x = a ? b : c;", CtorInitializerStyle);
15641   verifyFormat("{\n"
15642                "label1:\n"
15643                "  int x = 0;\n"
15644                "}",
15645                CtorInitializerStyle);
15646   verifyFormat("switch (x) {\n"
15647                "case 1:\n"
15648                "default:\n"
15649                "}",
15650                CtorInitializerStyle);
15651   verifyFormat("switch (allBraces) {\n"
15652                "case 1: {\n"
15653                "  break;\n"
15654                "}\n"
15655                "case 2: {\n"
15656                "  [[fallthrough]];\n"
15657                "}\n"
15658                "default: {\n"
15659                "  break;\n"
15660                "}\n"
15661                "}",
15662                CtorInitializerStyle);
15663   CtorInitializerStyle.BreakConstructorInitializers =
15664       FormatStyle::BCIS_AfterColon;
15665   verifyFormat("Fooooooooooo::Fooooooooooo():\n"
15666                "    aaaaaaaaaaaaaaaa(1),\n"
15667                "    bbbbbbbbbbbbbbbb(2) {}",
15668                CtorInitializerStyle);
15669   CtorInitializerStyle.BreakConstructorInitializers =
15670       FormatStyle::BCIS_BeforeComma;
15671   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
15672                "    : aaaaaaaaaaaaaaaa(1)\n"
15673                "    , bbbbbbbbbbbbbbbb(2) {}",
15674                CtorInitializerStyle);
15675   CtorInitializerStyle.BreakConstructorInitializers =
15676       FormatStyle::BCIS_BeforeColon;
15677   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
15678                "    : aaaaaaaaaaaaaaaa(1),\n"
15679                "      bbbbbbbbbbbbbbbb(2) {}",
15680                CtorInitializerStyle);
15681   CtorInitializerStyle.ConstructorInitializerIndentWidth = 0;
15682   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
15683                ": aaaaaaaaaaaaaaaa(1),\n"
15684                "  bbbbbbbbbbbbbbbb(2) {}",
15685                CtorInitializerStyle);
15686 
15687   FormatStyle InheritanceStyle = getLLVMStyleWithColumns(30);
15688   InheritanceStyle.SpaceBeforeInheritanceColon = false;
15689   verifyFormat("class Foo: public Bar {};", InheritanceStyle);
15690   verifyFormat("Foo::Foo() : foo(1) {}", InheritanceStyle);
15691   verifyFormat("for (auto a : b) {\n}", InheritanceStyle);
15692   verifyFormat("int x = a ? b : c;", InheritanceStyle);
15693   verifyFormat("{\n"
15694                "label2:\n"
15695                "  int x = 0;\n"
15696                "}",
15697                InheritanceStyle);
15698   verifyFormat("switch (x) {\n"
15699                "case 1:\n"
15700                "default:\n"
15701                "}",
15702                InheritanceStyle);
15703   verifyFormat("switch (allBraces) {\n"
15704                "case 1: {\n"
15705                "  break;\n"
15706                "}\n"
15707                "case 2: {\n"
15708                "  [[fallthrough]];\n"
15709                "}\n"
15710                "default: {\n"
15711                "  break;\n"
15712                "}\n"
15713                "}",
15714                InheritanceStyle);
15715   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_AfterComma;
15716   verifyFormat("class Foooooooooooooooooooooo\n"
15717                "    : public aaaaaaaaaaaaaaaaaa,\n"
15718                "      public bbbbbbbbbbbbbbbbbb {\n"
15719                "}",
15720                InheritanceStyle);
15721   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_AfterColon;
15722   verifyFormat("class Foooooooooooooooooooooo:\n"
15723                "    public aaaaaaaaaaaaaaaaaa,\n"
15724                "    public bbbbbbbbbbbbbbbbbb {\n"
15725                "}",
15726                InheritanceStyle);
15727   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_BeforeComma;
15728   verifyFormat("class Foooooooooooooooooooooo\n"
15729                "    : public aaaaaaaaaaaaaaaaaa\n"
15730                "    , public bbbbbbbbbbbbbbbbbb {\n"
15731                "}",
15732                InheritanceStyle);
15733   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
15734   verifyFormat("class Foooooooooooooooooooooo\n"
15735                "    : public aaaaaaaaaaaaaaaaaa,\n"
15736                "      public bbbbbbbbbbbbbbbbbb {\n"
15737                "}",
15738                InheritanceStyle);
15739   InheritanceStyle.ConstructorInitializerIndentWidth = 0;
15740   verifyFormat("class Foooooooooooooooooooooo\n"
15741                ": public aaaaaaaaaaaaaaaaaa,\n"
15742                "  public bbbbbbbbbbbbbbbbbb {}",
15743                InheritanceStyle);
15744 
15745   FormatStyle ForLoopStyle = getLLVMStyle();
15746   ForLoopStyle.SpaceBeforeRangeBasedForLoopColon = false;
15747   verifyFormat("class Foo : public Bar {};", ForLoopStyle);
15748   verifyFormat("Foo::Foo() : foo(1) {}", ForLoopStyle);
15749   verifyFormat("for (auto a: b) {\n}", ForLoopStyle);
15750   verifyFormat("int x = a ? b : c;", ForLoopStyle);
15751   verifyFormat("{\n"
15752                "label2:\n"
15753                "  int x = 0;\n"
15754                "}",
15755                ForLoopStyle);
15756   verifyFormat("switch (x) {\n"
15757                "case 1:\n"
15758                "default:\n"
15759                "}",
15760                ForLoopStyle);
15761   verifyFormat("switch (allBraces) {\n"
15762                "case 1: {\n"
15763                "  break;\n"
15764                "}\n"
15765                "case 2: {\n"
15766                "  [[fallthrough]];\n"
15767                "}\n"
15768                "default: {\n"
15769                "  break;\n"
15770                "}\n"
15771                "}",
15772                ForLoopStyle);
15773 
15774   FormatStyle CaseStyle = getLLVMStyle();
15775   CaseStyle.SpaceBeforeCaseColon = true;
15776   verifyFormat("class Foo : public Bar {};", CaseStyle);
15777   verifyFormat("Foo::Foo() : foo(1) {}", CaseStyle);
15778   verifyFormat("for (auto a : b) {\n}", CaseStyle);
15779   verifyFormat("int x = a ? b : c;", CaseStyle);
15780   verifyFormat("switch (x) {\n"
15781                "case 1 :\n"
15782                "default :\n"
15783                "}",
15784                CaseStyle);
15785   verifyFormat("switch (allBraces) {\n"
15786                "case 1 : {\n"
15787                "  break;\n"
15788                "}\n"
15789                "case 2 : {\n"
15790                "  [[fallthrough]];\n"
15791                "}\n"
15792                "default : {\n"
15793                "  break;\n"
15794                "}\n"
15795                "}",
15796                CaseStyle);
15797 
15798   FormatStyle NoSpaceStyle = getLLVMStyle();
15799   EXPECT_EQ(NoSpaceStyle.SpaceBeforeCaseColon, false);
15800   NoSpaceStyle.SpaceBeforeCtorInitializerColon = false;
15801   NoSpaceStyle.SpaceBeforeInheritanceColon = false;
15802   NoSpaceStyle.SpaceBeforeRangeBasedForLoopColon = false;
15803   verifyFormat("class Foo: public Bar {};", NoSpaceStyle);
15804   verifyFormat("Foo::Foo(): foo(1) {}", NoSpaceStyle);
15805   verifyFormat("for (auto a: b) {\n}", NoSpaceStyle);
15806   verifyFormat("int x = a ? b : c;", NoSpaceStyle);
15807   verifyFormat("{\n"
15808                "label3:\n"
15809                "  int x = 0;\n"
15810                "}",
15811                NoSpaceStyle);
15812   verifyFormat("switch (x) {\n"
15813                "case 1:\n"
15814                "default:\n"
15815                "}",
15816                NoSpaceStyle);
15817   verifyFormat("switch (allBraces) {\n"
15818                "case 1: {\n"
15819                "  break;\n"
15820                "}\n"
15821                "case 2: {\n"
15822                "  [[fallthrough]];\n"
15823                "}\n"
15824                "default: {\n"
15825                "  break;\n"
15826                "}\n"
15827                "}",
15828                NoSpaceStyle);
15829 
15830   FormatStyle InvertedSpaceStyle = getLLVMStyle();
15831   InvertedSpaceStyle.SpaceBeforeCaseColon = true;
15832   InvertedSpaceStyle.SpaceBeforeCtorInitializerColon = false;
15833   InvertedSpaceStyle.SpaceBeforeInheritanceColon = false;
15834   InvertedSpaceStyle.SpaceBeforeRangeBasedForLoopColon = false;
15835   verifyFormat("class Foo: public Bar {};", InvertedSpaceStyle);
15836   verifyFormat("Foo::Foo(): foo(1) {}", InvertedSpaceStyle);
15837   verifyFormat("for (auto a: b) {\n}", InvertedSpaceStyle);
15838   verifyFormat("int x = a ? b : c;", InvertedSpaceStyle);
15839   verifyFormat("{\n"
15840                "label3:\n"
15841                "  int x = 0;\n"
15842                "}",
15843                InvertedSpaceStyle);
15844   verifyFormat("switch (x) {\n"
15845                "case 1 :\n"
15846                "case 2 : {\n"
15847                "  break;\n"
15848                "}\n"
15849                "default :\n"
15850                "  break;\n"
15851                "}",
15852                InvertedSpaceStyle);
15853   verifyFormat("switch (allBraces) {\n"
15854                "case 1 : {\n"
15855                "  break;\n"
15856                "}\n"
15857                "case 2 : {\n"
15858                "  [[fallthrough]];\n"
15859                "}\n"
15860                "default : {\n"
15861                "  break;\n"
15862                "}\n"
15863                "}",
15864                InvertedSpaceStyle);
15865 }
15866 
15867 TEST_F(FormatTest, ConfigurableSpaceAroundPointerQualifiers) {
15868   FormatStyle Style = getLLVMStyle();
15869 
15870   Style.PointerAlignment = FormatStyle::PAS_Left;
15871   Style.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Default;
15872   verifyFormat("void* const* x = NULL;", Style);
15873 
15874 #define verifyQualifierSpaces(Code, Pointers, Qualifiers)                      \
15875   do {                                                                         \
15876     Style.PointerAlignment = FormatStyle::Pointers;                            \
15877     Style.SpaceAroundPointerQualifiers = FormatStyle::Qualifiers;              \
15878     verifyFormat(Code, Style);                                                 \
15879   } while (false)
15880 
15881   verifyQualifierSpaces("void* const* x = NULL;", PAS_Left, SAPQ_Default);
15882   verifyQualifierSpaces("void *const *x = NULL;", PAS_Right, SAPQ_Default);
15883   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Default);
15884 
15885   verifyQualifierSpaces("void* const* x = NULL;", PAS_Left, SAPQ_Before);
15886   verifyQualifierSpaces("void * const *x = NULL;", PAS_Right, SAPQ_Before);
15887   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Before);
15888 
15889   verifyQualifierSpaces("void* const * x = NULL;", PAS_Left, SAPQ_After);
15890   verifyQualifierSpaces("void *const *x = NULL;", PAS_Right, SAPQ_After);
15891   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_After);
15892 
15893   verifyQualifierSpaces("void* const * x = NULL;", PAS_Left, SAPQ_Both);
15894   verifyQualifierSpaces("void * const *x = NULL;", PAS_Right, SAPQ_Both);
15895   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Both);
15896 
15897   verifyQualifierSpaces("Foo::operator void const*();", PAS_Left, SAPQ_Default);
15898   verifyQualifierSpaces("Foo::operator void const *();", PAS_Right,
15899                         SAPQ_Default);
15900   verifyQualifierSpaces("Foo::operator void const *();", PAS_Middle,
15901                         SAPQ_Default);
15902 
15903   verifyQualifierSpaces("Foo::operator void const*();", PAS_Left, SAPQ_Before);
15904   verifyQualifierSpaces("Foo::operator void const *();", PAS_Right,
15905                         SAPQ_Before);
15906   verifyQualifierSpaces("Foo::operator void const *();", PAS_Middle,
15907                         SAPQ_Before);
15908 
15909   verifyQualifierSpaces("Foo::operator void const *();", PAS_Left, SAPQ_After);
15910   verifyQualifierSpaces("Foo::operator void const *();", PAS_Right, SAPQ_After);
15911   verifyQualifierSpaces("Foo::operator void const *();", PAS_Middle,
15912                         SAPQ_After);
15913 
15914   verifyQualifierSpaces("Foo::operator void const *();", PAS_Left, SAPQ_Both);
15915   verifyQualifierSpaces("Foo::operator void const *();", PAS_Right, SAPQ_Both);
15916   verifyQualifierSpaces("Foo::operator void const *();", PAS_Middle, SAPQ_Both);
15917 
15918 #undef verifyQualifierSpaces
15919 
15920   FormatStyle Spaces = getLLVMStyle();
15921   Spaces.AttributeMacros.push_back("qualified");
15922   Spaces.PointerAlignment = FormatStyle::PAS_Right;
15923   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Default;
15924   verifyFormat("SomeType *volatile *a = NULL;", Spaces);
15925   verifyFormat("SomeType *__attribute__((attr)) *a = NULL;", Spaces);
15926   verifyFormat("std::vector<SomeType *const *> x;", Spaces);
15927   verifyFormat("std::vector<SomeType *qualified *> x;", Spaces);
15928   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
15929   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Before;
15930   verifyFormat("SomeType * volatile *a = NULL;", Spaces);
15931   verifyFormat("SomeType * __attribute__((attr)) *a = NULL;", Spaces);
15932   verifyFormat("std::vector<SomeType * const *> x;", Spaces);
15933   verifyFormat("std::vector<SomeType * qualified *> x;", Spaces);
15934   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
15935 
15936   // Check that SAPQ_Before doesn't result in extra spaces for PAS_Left.
15937   Spaces.PointerAlignment = FormatStyle::PAS_Left;
15938   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Before;
15939   verifyFormat("SomeType* volatile* a = NULL;", Spaces);
15940   verifyFormat("SomeType* __attribute__((attr))* a = NULL;", Spaces);
15941   verifyFormat("std::vector<SomeType* const*> x;", Spaces);
15942   verifyFormat("std::vector<SomeType* qualified*> x;", Spaces);
15943   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
15944   // However, setting it to SAPQ_After should add spaces after __attribute, etc.
15945   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_After;
15946   verifyFormat("SomeType* volatile * a = NULL;", Spaces);
15947   verifyFormat("SomeType* __attribute__((attr)) * a = NULL;", Spaces);
15948   verifyFormat("std::vector<SomeType* const *> x;", Spaces);
15949   verifyFormat("std::vector<SomeType* qualified *> x;", Spaces);
15950   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
15951 
15952   // PAS_Middle should not have any noticeable changes even for SAPQ_Both
15953   Spaces.PointerAlignment = FormatStyle::PAS_Middle;
15954   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_After;
15955   verifyFormat("SomeType * volatile * a = NULL;", Spaces);
15956   verifyFormat("SomeType * __attribute__((attr)) * a = NULL;", Spaces);
15957   verifyFormat("std::vector<SomeType * const *> x;", Spaces);
15958   verifyFormat("std::vector<SomeType * qualified *> x;", Spaces);
15959   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
15960 }
15961 
15962 TEST_F(FormatTest, AlignConsecutiveMacros) {
15963   FormatStyle Style = getLLVMStyle();
15964   Style.AlignConsecutiveAssignments.Enabled = true;
15965   Style.AlignConsecutiveDeclarations.Enabled = true;
15966 
15967   verifyFormat("#define a 3\n"
15968                "#define bbbb 4\n"
15969                "#define ccc (5)",
15970                Style);
15971 
15972   verifyFormat("#define f(x) (x * x)\n"
15973                "#define fff(x, y, z) (x * y + z)\n"
15974                "#define ffff(x, y) (x - y)",
15975                Style);
15976 
15977   verifyFormat("#define foo(x, y) (x + y)\n"
15978                "#define bar (5, 6)(2 + 2)",
15979                Style);
15980 
15981   verifyFormat("#define a 3\n"
15982                "#define bbbb 4\n"
15983                "#define ccc (5)\n"
15984                "#define f(x) (x * x)\n"
15985                "#define fff(x, y, z) (x * y + z)\n"
15986                "#define ffff(x, y) (x - y)",
15987                Style);
15988 
15989   Style.AlignConsecutiveMacros.Enabled = true;
15990   verifyFormat("#define a    3\n"
15991                "#define bbbb 4\n"
15992                "#define ccc  (5)",
15993                Style);
15994 
15995   verifyFormat("#define f(x)         (x * x)\n"
15996                "#define fff(x, y, z) (x * y + z)\n"
15997                "#define ffff(x, y)   (x - y)",
15998                Style);
15999 
16000   verifyFormat("#define foo(x, y) (x + y)\n"
16001                "#define bar       (5, 6)(2 + 2)",
16002                Style);
16003 
16004   verifyFormat("#define a            3\n"
16005                "#define bbbb         4\n"
16006                "#define ccc          (5)\n"
16007                "#define f(x)         (x * x)\n"
16008                "#define fff(x, y, z) (x * y + z)\n"
16009                "#define ffff(x, y)   (x - y)",
16010                Style);
16011 
16012   verifyFormat("#define a         5\n"
16013                "#define foo(x, y) (x + y)\n"
16014                "#define CCC       (6)\n"
16015                "auto lambda = []() {\n"
16016                "  auto  ii = 0;\n"
16017                "  float j  = 0;\n"
16018                "  return 0;\n"
16019                "};\n"
16020                "int   i  = 0;\n"
16021                "float i2 = 0;\n"
16022                "auto  v  = type{\n"
16023                "    i = 1,   //\n"
16024                "    (i = 2), //\n"
16025                "    i = 3    //\n"
16026                "};",
16027                Style);
16028 
16029   Style.AlignConsecutiveMacros.Enabled = false;
16030   Style.ColumnLimit = 20;
16031 
16032   verifyFormat("#define a          \\\n"
16033                "  \"aabbbbbbbbbbbb\"\n"
16034                "#define D          \\\n"
16035                "  \"aabbbbbbbbbbbb\" \\\n"
16036                "  \"ccddeeeeeeeee\"\n"
16037                "#define B          \\\n"
16038                "  \"QQQQQQQQQQQQQ\"  \\\n"
16039                "  \"FFFFFFFFFFFFF\"  \\\n"
16040                "  \"LLLLLLLL\"\n",
16041                Style);
16042 
16043   Style.AlignConsecutiveMacros.Enabled = true;
16044   verifyFormat("#define a          \\\n"
16045                "  \"aabbbbbbbbbbbb\"\n"
16046                "#define D          \\\n"
16047                "  \"aabbbbbbbbbbbb\" \\\n"
16048                "  \"ccddeeeeeeeee\"\n"
16049                "#define B          \\\n"
16050                "  \"QQQQQQQQQQQQQ\"  \\\n"
16051                "  \"FFFFFFFFFFFFF\"  \\\n"
16052                "  \"LLLLLLLL\"\n",
16053                Style);
16054 
16055   // Test across comments
16056   Style.MaxEmptyLinesToKeep = 10;
16057   Style.ReflowComments = false;
16058   Style.AlignConsecutiveMacros.AcrossComments = true;
16059   EXPECT_EQ("#define a    3\n"
16060             "// line comment\n"
16061             "#define bbbb 4\n"
16062             "#define ccc  (5)",
16063             format("#define a 3\n"
16064                    "// line comment\n"
16065                    "#define bbbb 4\n"
16066                    "#define ccc (5)",
16067                    Style));
16068 
16069   EXPECT_EQ("#define a    3\n"
16070             "/* block comment */\n"
16071             "#define bbbb 4\n"
16072             "#define ccc  (5)",
16073             format("#define a  3\n"
16074                    "/* block comment */\n"
16075                    "#define bbbb 4\n"
16076                    "#define ccc (5)",
16077                    Style));
16078 
16079   EXPECT_EQ("#define a    3\n"
16080             "/* multi-line *\n"
16081             " * block comment */\n"
16082             "#define bbbb 4\n"
16083             "#define ccc  (5)",
16084             format("#define a 3\n"
16085                    "/* multi-line *\n"
16086                    " * block comment */\n"
16087                    "#define bbbb 4\n"
16088                    "#define ccc (5)",
16089                    Style));
16090 
16091   EXPECT_EQ("#define a    3\n"
16092             "// multi-line line comment\n"
16093             "//\n"
16094             "#define bbbb 4\n"
16095             "#define ccc  (5)",
16096             format("#define a  3\n"
16097                    "// multi-line line comment\n"
16098                    "//\n"
16099                    "#define bbbb 4\n"
16100                    "#define ccc (5)",
16101                    Style));
16102 
16103   EXPECT_EQ("#define a 3\n"
16104             "// empty lines still break.\n"
16105             "\n"
16106             "#define bbbb 4\n"
16107             "#define ccc  (5)",
16108             format("#define a     3\n"
16109                    "// empty lines still break.\n"
16110                    "\n"
16111                    "#define bbbb     4\n"
16112                    "#define ccc  (5)",
16113                    Style));
16114 
16115   // Test across empty lines
16116   Style.AlignConsecutiveMacros.AcrossComments = false;
16117   Style.AlignConsecutiveMacros.AcrossEmptyLines = true;
16118   EXPECT_EQ("#define a    3\n"
16119             "\n"
16120             "#define bbbb 4\n"
16121             "#define ccc  (5)",
16122             format("#define a 3\n"
16123                    "\n"
16124                    "#define bbbb 4\n"
16125                    "#define ccc (5)",
16126                    Style));
16127 
16128   EXPECT_EQ("#define a    3\n"
16129             "\n"
16130             "\n"
16131             "\n"
16132             "#define bbbb 4\n"
16133             "#define ccc  (5)",
16134             format("#define a        3\n"
16135                    "\n"
16136                    "\n"
16137                    "\n"
16138                    "#define bbbb 4\n"
16139                    "#define ccc (5)",
16140                    Style));
16141 
16142   EXPECT_EQ("#define a 3\n"
16143             "// comments should break alignment\n"
16144             "//\n"
16145             "#define bbbb 4\n"
16146             "#define ccc  (5)",
16147             format("#define a        3\n"
16148                    "// comments should break alignment\n"
16149                    "//\n"
16150                    "#define bbbb 4\n"
16151                    "#define ccc (5)",
16152                    Style));
16153 
16154   // Test across empty lines and comments
16155   Style.AlignConsecutiveMacros.AcrossComments = true;
16156   verifyFormat("#define a    3\n"
16157                "\n"
16158                "// line comment\n"
16159                "#define bbbb 4\n"
16160                "#define ccc  (5)",
16161                Style);
16162 
16163   EXPECT_EQ("#define a    3\n"
16164             "\n"
16165             "\n"
16166             "/* multi-line *\n"
16167             " * block comment */\n"
16168             "\n"
16169             "\n"
16170             "#define bbbb 4\n"
16171             "#define ccc  (5)",
16172             format("#define a 3\n"
16173                    "\n"
16174                    "\n"
16175                    "/* multi-line *\n"
16176                    " * block comment */\n"
16177                    "\n"
16178                    "\n"
16179                    "#define bbbb 4\n"
16180                    "#define ccc (5)",
16181                    Style));
16182 
16183   EXPECT_EQ("#define a    3\n"
16184             "\n"
16185             "\n"
16186             "/* multi-line *\n"
16187             " * block comment */\n"
16188             "\n"
16189             "\n"
16190             "#define bbbb 4\n"
16191             "#define ccc  (5)",
16192             format("#define a 3\n"
16193                    "\n"
16194                    "\n"
16195                    "/* multi-line *\n"
16196                    " * block comment */\n"
16197                    "\n"
16198                    "\n"
16199                    "#define bbbb 4\n"
16200                    "#define ccc       (5)",
16201                    Style));
16202 }
16203 
16204 TEST_F(FormatTest, AlignConsecutiveAssignmentsAcrossEmptyLines) {
16205   FormatStyle Alignment = getLLVMStyle();
16206   Alignment.AlignConsecutiveMacros.Enabled = true;
16207   Alignment.AlignConsecutiveAssignments.Enabled = true;
16208   Alignment.AlignConsecutiveAssignments.AcrossEmptyLines = true;
16209 
16210   Alignment.MaxEmptyLinesToKeep = 10;
16211   /* Test alignment across empty lines */
16212   EXPECT_EQ("int a           = 5;\n"
16213             "\n"
16214             "int oneTwoThree = 123;",
16215             format("int a       = 5;\n"
16216                    "\n"
16217                    "int oneTwoThree= 123;",
16218                    Alignment));
16219   EXPECT_EQ("int a           = 5;\n"
16220             "int one         = 1;\n"
16221             "\n"
16222             "int oneTwoThree = 123;",
16223             format("int a = 5;\n"
16224                    "int one = 1;\n"
16225                    "\n"
16226                    "int oneTwoThree = 123;",
16227                    Alignment));
16228   EXPECT_EQ("int a           = 5;\n"
16229             "int one         = 1;\n"
16230             "\n"
16231             "int oneTwoThree = 123;\n"
16232             "int oneTwo      = 12;",
16233             format("int a = 5;\n"
16234                    "int one = 1;\n"
16235                    "\n"
16236                    "int oneTwoThree = 123;\n"
16237                    "int oneTwo = 12;",
16238                    Alignment));
16239 
16240   /* Test across comments */
16241   EXPECT_EQ("int a = 5;\n"
16242             "/* block comment */\n"
16243             "int oneTwoThree = 123;",
16244             format("int a = 5;\n"
16245                    "/* block comment */\n"
16246                    "int oneTwoThree=123;",
16247                    Alignment));
16248 
16249   EXPECT_EQ("int a = 5;\n"
16250             "// line comment\n"
16251             "int oneTwoThree = 123;",
16252             format("int a = 5;\n"
16253                    "// line comment\n"
16254                    "int oneTwoThree=123;",
16255                    Alignment));
16256 
16257   /* Test across comments and newlines */
16258   EXPECT_EQ("int a = 5;\n"
16259             "\n"
16260             "/* block comment */\n"
16261             "int oneTwoThree = 123;",
16262             format("int a = 5;\n"
16263                    "\n"
16264                    "/* block comment */\n"
16265                    "int oneTwoThree=123;",
16266                    Alignment));
16267 
16268   EXPECT_EQ("int a = 5;\n"
16269             "\n"
16270             "// line comment\n"
16271             "int oneTwoThree = 123;",
16272             format("int a = 5;\n"
16273                    "\n"
16274                    "// line comment\n"
16275                    "int oneTwoThree=123;",
16276                    Alignment));
16277 }
16278 
16279 TEST_F(FormatTest, AlignConsecutiveDeclarationsAcrossEmptyLinesAndComments) {
16280   FormatStyle Alignment = getLLVMStyle();
16281   Alignment.AlignConsecutiveDeclarations.Enabled = true;
16282   Alignment.AlignConsecutiveDeclarations.AcrossEmptyLines = true;
16283   Alignment.AlignConsecutiveDeclarations.AcrossComments = true;
16284 
16285   Alignment.MaxEmptyLinesToKeep = 10;
16286   /* Test alignment across empty lines */
16287   EXPECT_EQ("int         a = 5;\n"
16288             "\n"
16289             "float const oneTwoThree = 123;",
16290             format("int a = 5;\n"
16291                    "\n"
16292                    "float const oneTwoThree = 123;",
16293                    Alignment));
16294   EXPECT_EQ("int         a = 5;\n"
16295             "float const one = 1;\n"
16296             "\n"
16297             "int         oneTwoThree = 123;",
16298             format("int a = 5;\n"
16299                    "float const one = 1;\n"
16300                    "\n"
16301                    "int oneTwoThree = 123;",
16302                    Alignment));
16303 
16304   /* Test across comments */
16305   EXPECT_EQ("float const a = 5;\n"
16306             "/* block comment */\n"
16307             "int         oneTwoThree = 123;",
16308             format("float const a = 5;\n"
16309                    "/* block comment */\n"
16310                    "int oneTwoThree=123;",
16311                    Alignment));
16312 
16313   EXPECT_EQ("float const a = 5;\n"
16314             "// line comment\n"
16315             "int         oneTwoThree = 123;",
16316             format("float const a = 5;\n"
16317                    "// line comment\n"
16318                    "int oneTwoThree=123;",
16319                    Alignment));
16320 
16321   /* Test across comments and newlines */
16322   EXPECT_EQ("float const a = 5;\n"
16323             "\n"
16324             "/* block comment */\n"
16325             "int         oneTwoThree = 123;",
16326             format("float const a = 5;\n"
16327                    "\n"
16328                    "/* block comment */\n"
16329                    "int         oneTwoThree=123;",
16330                    Alignment));
16331 
16332   EXPECT_EQ("float const a = 5;\n"
16333             "\n"
16334             "// line comment\n"
16335             "int         oneTwoThree = 123;",
16336             format("float const a = 5;\n"
16337                    "\n"
16338                    "// line comment\n"
16339                    "int oneTwoThree=123;",
16340                    Alignment));
16341 }
16342 
16343 TEST_F(FormatTest, AlignConsecutiveBitFieldsAcrossEmptyLinesAndComments) {
16344   FormatStyle Alignment = getLLVMStyle();
16345   Alignment.AlignConsecutiveBitFields.Enabled = true;
16346   Alignment.AlignConsecutiveBitFields.AcrossEmptyLines = true;
16347   Alignment.AlignConsecutiveBitFields.AcrossComments = true;
16348 
16349   Alignment.MaxEmptyLinesToKeep = 10;
16350   /* Test alignment across empty lines */
16351   EXPECT_EQ("int a            : 5;\n"
16352             "\n"
16353             "int longbitfield : 6;",
16354             format("int a : 5;\n"
16355                    "\n"
16356                    "int longbitfield : 6;",
16357                    Alignment));
16358   EXPECT_EQ("int a            : 5;\n"
16359             "int one          : 1;\n"
16360             "\n"
16361             "int longbitfield : 6;",
16362             format("int a : 5;\n"
16363                    "int one : 1;\n"
16364                    "\n"
16365                    "int longbitfield : 6;",
16366                    Alignment));
16367 
16368   /* Test across comments */
16369   EXPECT_EQ("int a            : 5;\n"
16370             "/* block comment */\n"
16371             "int longbitfield : 6;",
16372             format("int a : 5;\n"
16373                    "/* block comment */\n"
16374                    "int longbitfield : 6;",
16375                    Alignment));
16376   EXPECT_EQ("int a            : 5;\n"
16377             "int one          : 1;\n"
16378             "// line comment\n"
16379             "int longbitfield : 6;",
16380             format("int a : 5;\n"
16381                    "int one : 1;\n"
16382                    "// line comment\n"
16383                    "int longbitfield : 6;",
16384                    Alignment));
16385 
16386   /* Test across comments and newlines */
16387   EXPECT_EQ("int a            : 5;\n"
16388             "/* block comment */\n"
16389             "\n"
16390             "int longbitfield : 6;",
16391             format("int a : 5;\n"
16392                    "/* block comment */\n"
16393                    "\n"
16394                    "int longbitfield : 6;",
16395                    Alignment));
16396   EXPECT_EQ("int a            : 5;\n"
16397             "int one          : 1;\n"
16398             "\n"
16399             "// line comment\n"
16400             "\n"
16401             "int longbitfield : 6;",
16402             format("int a : 5;\n"
16403                    "int one : 1;\n"
16404                    "\n"
16405                    "// line comment \n"
16406                    "\n"
16407                    "int longbitfield : 6;",
16408                    Alignment));
16409 }
16410 
16411 TEST_F(FormatTest, AlignConsecutiveAssignmentsAcrossComments) {
16412   FormatStyle Alignment = getLLVMStyle();
16413   Alignment.AlignConsecutiveMacros.Enabled = true;
16414   Alignment.AlignConsecutiveAssignments.Enabled = true;
16415   Alignment.AlignConsecutiveAssignments.AcrossComments = true;
16416 
16417   Alignment.MaxEmptyLinesToKeep = 10;
16418   /* Test alignment across empty lines */
16419   EXPECT_EQ("int a = 5;\n"
16420             "\n"
16421             "int oneTwoThree = 123;",
16422             format("int a       = 5;\n"
16423                    "\n"
16424                    "int oneTwoThree= 123;",
16425                    Alignment));
16426   EXPECT_EQ("int a   = 5;\n"
16427             "int one = 1;\n"
16428             "\n"
16429             "int oneTwoThree = 123;",
16430             format("int a = 5;\n"
16431                    "int one = 1;\n"
16432                    "\n"
16433                    "int oneTwoThree = 123;",
16434                    Alignment));
16435 
16436   /* Test across comments */
16437   EXPECT_EQ("int a           = 5;\n"
16438             "/* block comment */\n"
16439             "int oneTwoThree = 123;",
16440             format("int a = 5;\n"
16441                    "/* block comment */\n"
16442                    "int oneTwoThree=123;",
16443                    Alignment));
16444 
16445   EXPECT_EQ("int a           = 5;\n"
16446             "// line comment\n"
16447             "int oneTwoThree = 123;",
16448             format("int a = 5;\n"
16449                    "// line comment\n"
16450                    "int oneTwoThree=123;",
16451                    Alignment));
16452 
16453   EXPECT_EQ("int a           = 5;\n"
16454             "/*\n"
16455             " * multi-line block comment\n"
16456             " */\n"
16457             "int oneTwoThree = 123;",
16458             format("int a = 5;\n"
16459                    "/*\n"
16460                    " * multi-line block comment\n"
16461                    " */\n"
16462                    "int oneTwoThree=123;",
16463                    Alignment));
16464 
16465   EXPECT_EQ("int a           = 5;\n"
16466             "//\n"
16467             "// multi-line line comment\n"
16468             "//\n"
16469             "int oneTwoThree = 123;",
16470             format("int a = 5;\n"
16471                    "//\n"
16472                    "// multi-line line comment\n"
16473                    "//\n"
16474                    "int oneTwoThree=123;",
16475                    Alignment));
16476 
16477   /* Test across comments and newlines */
16478   EXPECT_EQ("int a = 5;\n"
16479             "\n"
16480             "/* block comment */\n"
16481             "int oneTwoThree = 123;",
16482             format("int a = 5;\n"
16483                    "\n"
16484                    "/* block comment */\n"
16485                    "int oneTwoThree=123;",
16486                    Alignment));
16487 
16488   EXPECT_EQ("int a = 5;\n"
16489             "\n"
16490             "// line comment\n"
16491             "int oneTwoThree = 123;",
16492             format("int a = 5;\n"
16493                    "\n"
16494                    "// line comment\n"
16495                    "int oneTwoThree=123;",
16496                    Alignment));
16497 }
16498 
16499 TEST_F(FormatTest, AlignConsecutiveAssignmentsAcrossEmptyLinesAndComments) {
16500   FormatStyle Alignment = getLLVMStyle();
16501   Alignment.AlignConsecutiveMacros.Enabled = true;
16502   Alignment.AlignConsecutiveAssignments.Enabled = true;
16503   Alignment.AlignConsecutiveAssignments.AcrossEmptyLines = true;
16504   Alignment.AlignConsecutiveAssignments.AcrossComments = true;
16505   verifyFormat("int a           = 5;\n"
16506                "int oneTwoThree = 123;",
16507                Alignment);
16508   verifyFormat("int a           = method();\n"
16509                "int oneTwoThree = 133;",
16510                Alignment);
16511   verifyFormat("a &= 5;\n"
16512                "bcd *= 5;\n"
16513                "ghtyf += 5;\n"
16514                "dvfvdb -= 5;\n"
16515                "a /= 5;\n"
16516                "vdsvsv %= 5;\n"
16517                "sfdbddfbdfbb ^= 5;\n"
16518                "dvsdsv |= 5;\n"
16519                "int dsvvdvsdvvv = 123;",
16520                Alignment);
16521   verifyFormat("int i = 1, j = 10;\n"
16522                "something = 2000;",
16523                Alignment);
16524   verifyFormat("something = 2000;\n"
16525                "int i = 1, j = 10;\n",
16526                Alignment);
16527   verifyFormat("something = 2000;\n"
16528                "another   = 911;\n"
16529                "int i = 1, j = 10;\n"
16530                "oneMore = 1;\n"
16531                "i       = 2;",
16532                Alignment);
16533   verifyFormat("int a   = 5;\n"
16534                "int one = 1;\n"
16535                "method();\n"
16536                "int oneTwoThree = 123;\n"
16537                "int oneTwo      = 12;",
16538                Alignment);
16539   verifyFormat("int oneTwoThree = 123;\n"
16540                "int oneTwo      = 12;\n"
16541                "method();\n",
16542                Alignment);
16543   verifyFormat("int oneTwoThree = 123; // comment\n"
16544                "int oneTwo      = 12;  // comment",
16545                Alignment);
16546 
16547   // Bug 25167
16548   /* Uncomment when fixed
16549     verifyFormat("#if A\n"
16550                  "#else\n"
16551                  "int aaaaaaaa = 12;\n"
16552                  "#endif\n"
16553                  "#if B\n"
16554                  "#else\n"
16555                  "int a = 12;\n"
16556                  "#endif\n",
16557                  Alignment);
16558     verifyFormat("enum foo {\n"
16559                  "#if A\n"
16560                  "#else\n"
16561                  "  aaaaaaaa = 12;\n"
16562                  "#endif\n"
16563                  "#if B\n"
16564                  "#else\n"
16565                  "  a = 12;\n"
16566                  "#endif\n"
16567                  "};\n",
16568                  Alignment);
16569   */
16570 
16571   Alignment.MaxEmptyLinesToKeep = 10;
16572   /* Test alignment across empty lines */
16573   EXPECT_EQ("int a           = 5;\n"
16574             "\n"
16575             "int oneTwoThree = 123;",
16576             format("int a       = 5;\n"
16577                    "\n"
16578                    "int oneTwoThree= 123;",
16579                    Alignment));
16580   EXPECT_EQ("int a           = 5;\n"
16581             "int one         = 1;\n"
16582             "\n"
16583             "int oneTwoThree = 123;",
16584             format("int a = 5;\n"
16585                    "int one = 1;\n"
16586                    "\n"
16587                    "int oneTwoThree = 123;",
16588                    Alignment));
16589   EXPECT_EQ("int a           = 5;\n"
16590             "int one         = 1;\n"
16591             "\n"
16592             "int oneTwoThree = 123;\n"
16593             "int oneTwo      = 12;",
16594             format("int a = 5;\n"
16595                    "int one = 1;\n"
16596                    "\n"
16597                    "int oneTwoThree = 123;\n"
16598                    "int oneTwo = 12;",
16599                    Alignment));
16600 
16601   /* Test across comments */
16602   EXPECT_EQ("int a           = 5;\n"
16603             "/* block comment */\n"
16604             "int oneTwoThree = 123;",
16605             format("int a = 5;\n"
16606                    "/* block comment */\n"
16607                    "int oneTwoThree=123;",
16608                    Alignment));
16609 
16610   EXPECT_EQ("int a           = 5;\n"
16611             "// line comment\n"
16612             "int oneTwoThree = 123;",
16613             format("int a = 5;\n"
16614                    "// line comment\n"
16615                    "int oneTwoThree=123;",
16616                    Alignment));
16617 
16618   /* Test across comments and newlines */
16619   EXPECT_EQ("int a           = 5;\n"
16620             "\n"
16621             "/* block comment */\n"
16622             "int oneTwoThree = 123;",
16623             format("int a = 5;\n"
16624                    "\n"
16625                    "/* block comment */\n"
16626                    "int oneTwoThree=123;",
16627                    Alignment));
16628 
16629   EXPECT_EQ("int a           = 5;\n"
16630             "\n"
16631             "// line comment\n"
16632             "int oneTwoThree = 123;",
16633             format("int a = 5;\n"
16634                    "\n"
16635                    "// line comment\n"
16636                    "int oneTwoThree=123;",
16637                    Alignment));
16638 
16639   EXPECT_EQ("int a           = 5;\n"
16640             "//\n"
16641             "// multi-line line comment\n"
16642             "//\n"
16643             "int oneTwoThree = 123;",
16644             format("int a = 5;\n"
16645                    "//\n"
16646                    "// multi-line line comment\n"
16647                    "//\n"
16648                    "int oneTwoThree=123;",
16649                    Alignment));
16650 
16651   EXPECT_EQ("int a           = 5;\n"
16652             "/*\n"
16653             " *  multi-line block comment\n"
16654             " */\n"
16655             "int oneTwoThree = 123;",
16656             format("int a = 5;\n"
16657                    "/*\n"
16658                    " *  multi-line block comment\n"
16659                    " */\n"
16660                    "int oneTwoThree=123;",
16661                    Alignment));
16662 
16663   EXPECT_EQ("int a           = 5;\n"
16664             "\n"
16665             "/* block comment */\n"
16666             "\n"
16667             "\n"
16668             "\n"
16669             "int oneTwoThree = 123;",
16670             format("int a = 5;\n"
16671                    "\n"
16672                    "/* block comment */\n"
16673                    "\n"
16674                    "\n"
16675                    "\n"
16676                    "int oneTwoThree=123;",
16677                    Alignment));
16678 
16679   EXPECT_EQ("int a           = 5;\n"
16680             "\n"
16681             "// line comment\n"
16682             "\n"
16683             "\n"
16684             "\n"
16685             "int oneTwoThree = 123;",
16686             format("int a = 5;\n"
16687                    "\n"
16688                    "// line comment\n"
16689                    "\n"
16690                    "\n"
16691                    "\n"
16692                    "int oneTwoThree=123;",
16693                    Alignment));
16694 
16695   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
16696   verifyFormat("#define A \\\n"
16697                "  int aaaa       = 12; \\\n"
16698                "  int b          = 23; \\\n"
16699                "  int ccc        = 234; \\\n"
16700                "  int dddddddddd = 2345;",
16701                Alignment);
16702   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
16703   verifyFormat("#define A               \\\n"
16704                "  int aaaa       = 12;  \\\n"
16705                "  int b          = 23;  \\\n"
16706                "  int ccc        = 234; \\\n"
16707                "  int dddddddddd = 2345;",
16708                Alignment);
16709   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
16710   verifyFormat("#define A                                                      "
16711                "                \\\n"
16712                "  int aaaa       = 12;                                         "
16713                "                \\\n"
16714                "  int b          = 23;                                         "
16715                "                \\\n"
16716                "  int ccc        = 234;                                        "
16717                "                \\\n"
16718                "  int dddddddddd = 2345;",
16719                Alignment);
16720   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
16721                "k = 4, int l = 5,\n"
16722                "                  int m = 6) {\n"
16723                "  int j      = 10;\n"
16724                "  otherThing = 1;\n"
16725                "}",
16726                Alignment);
16727   verifyFormat("void SomeFunction(int parameter = 0) {\n"
16728                "  int i   = 1;\n"
16729                "  int j   = 2;\n"
16730                "  int big = 10000;\n"
16731                "}",
16732                Alignment);
16733   verifyFormat("class C {\n"
16734                "public:\n"
16735                "  int i            = 1;\n"
16736                "  virtual void f() = 0;\n"
16737                "};",
16738                Alignment);
16739   verifyFormat("int i = 1;\n"
16740                "if (SomeType t = getSomething()) {\n"
16741                "}\n"
16742                "int j   = 2;\n"
16743                "int big = 10000;",
16744                Alignment);
16745   verifyFormat("int j = 7;\n"
16746                "for (int k = 0; k < N; ++k) {\n"
16747                "}\n"
16748                "int j   = 2;\n"
16749                "int big = 10000;\n"
16750                "}",
16751                Alignment);
16752   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
16753   verifyFormat("int i = 1;\n"
16754                "LooooooooooongType loooooooooooooooooooooongVariable\n"
16755                "    = someLooooooooooooooooongFunction();\n"
16756                "int j = 2;",
16757                Alignment);
16758   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
16759   verifyFormat("int i = 1;\n"
16760                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
16761                "    someLooooooooooooooooongFunction();\n"
16762                "int j = 2;",
16763                Alignment);
16764 
16765   verifyFormat("auto lambda = []() {\n"
16766                "  auto i = 0;\n"
16767                "  return 0;\n"
16768                "};\n"
16769                "int i  = 0;\n"
16770                "auto v = type{\n"
16771                "    i = 1,   //\n"
16772                "    (i = 2), //\n"
16773                "    i = 3    //\n"
16774                "};",
16775                Alignment);
16776 
16777   verifyFormat(
16778       "int i      = 1;\n"
16779       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
16780       "                          loooooooooooooooooooooongParameterB);\n"
16781       "int j      = 2;",
16782       Alignment);
16783 
16784   verifyFormat("template <typename T, typename T_0 = very_long_type_name_0,\n"
16785                "          typename B   = very_long_type_name_1,\n"
16786                "          typename T_2 = very_long_type_name_2>\n"
16787                "auto foo() {}\n",
16788                Alignment);
16789   verifyFormat("int a, b = 1;\n"
16790                "int c  = 2;\n"
16791                "int dd = 3;\n",
16792                Alignment);
16793   verifyFormat("int aa       = ((1 > 2) ? 3 : 4);\n"
16794                "float b[1][] = {{3.f}};\n",
16795                Alignment);
16796   verifyFormat("for (int i = 0; i < 1; i++)\n"
16797                "  int x = 1;\n",
16798                Alignment);
16799   verifyFormat("for (i = 0; i < 1; i++)\n"
16800                "  x = 1;\n"
16801                "y = 1;\n",
16802                Alignment);
16803 
16804   Alignment.ReflowComments = true;
16805   Alignment.ColumnLimit = 50;
16806   EXPECT_EQ("int x   = 0;\n"
16807             "int yy  = 1; /// specificlennospace\n"
16808             "int zzz = 2;\n",
16809             format("int x   = 0;\n"
16810                    "int yy  = 1; ///specificlennospace\n"
16811                    "int zzz = 2;\n",
16812                    Alignment));
16813 }
16814 
16815 TEST_F(FormatTest, AlignCompoundAssignments) {
16816   FormatStyle Alignment = getLLVMStyle();
16817   Alignment.AlignConsecutiveAssignments.Enabled = true;
16818   Alignment.AlignConsecutiveAssignments.AlignCompound = true;
16819   Alignment.AlignConsecutiveAssignments.PadOperators = false;
16820   verifyFormat("sfdbddfbdfbb    = 5;\n"
16821                "dvsdsv          = 5;\n"
16822                "int dsvvdvsdvvv = 123;",
16823                Alignment);
16824   verifyFormat("sfdbddfbdfbb   ^= 5;\n"
16825                "dvsdsv         |= 5;\n"
16826                "int dsvvdvsdvvv = 123;",
16827                Alignment);
16828   verifyFormat("sfdbddfbdfbb   ^= 5;\n"
16829                "dvsdsv        <<= 5;\n"
16830                "int dsvvdvsdvvv = 123;",
16831                Alignment);
16832   // Test that `<=` is not treated as a compound assignment.
16833   verifyFormat("aa &= 5;\n"
16834                "b <= 10;\n"
16835                "c = 15;",
16836                Alignment);
16837   Alignment.AlignConsecutiveAssignments.PadOperators = true;
16838   verifyFormat("sfdbddfbdfbb    = 5;\n"
16839                "dvsdsv          = 5;\n"
16840                "int dsvvdvsdvvv = 123;",
16841                Alignment);
16842   verifyFormat("sfdbddfbdfbb    ^= 5;\n"
16843                "dvsdsv          |= 5;\n"
16844                "int dsvvdvsdvvv  = 123;",
16845                Alignment);
16846   verifyFormat("sfdbddfbdfbb     ^= 5;\n"
16847                "dvsdsv          <<= 5;\n"
16848                "int dsvvdvsdvvv   = 123;",
16849                Alignment);
16850   EXPECT_EQ("a   += 5;\n"
16851             "one  = 1;\n"
16852             "\n"
16853             "oneTwoThree = 123;\n",
16854             format("a += 5;\n"
16855                    "one = 1;\n"
16856                    "\n"
16857                    "oneTwoThree = 123;\n",
16858                    Alignment));
16859   EXPECT_EQ("a   += 5;\n"
16860             "one  = 1;\n"
16861             "//\n"
16862             "oneTwoThree = 123;\n",
16863             format("a += 5;\n"
16864                    "one = 1;\n"
16865                    "//\n"
16866                    "oneTwoThree = 123;\n",
16867                    Alignment));
16868   Alignment.AlignConsecutiveAssignments.AcrossEmptyLines = true;
16869   EXPECT_EQ("a           += 5;\n"
16870             "one          = 1;\n"
16871             "\n"
16872             "oneTwoThree  = 123;\n",
16873             format("a += 5;\n"
16874                    "one = 1;\n"
16875                    "\n"
16876                    "oneTwoThree = 123;\n",
16877                    Alignment));
16878   EXPECT_EQ("a   += 5;\n"
16879             "one  = 1;\n"
16880             "//\n"
16881             "oneTwoThree = 123;\n",
16882             format("a += 5;\n"
16883                    "one = 1;\n"
16884                    "//\n"
16885                    "oneTwoThree = 123;\n",
16886                    Alignment));
16887   Alignment.AlignConsecutiveAssignments.AcrossEmptyLines = false;
16888   Alignment.AlignConsecutiveAssignments.AcrossComments = true;
16889   EXPECT_EQ("a   += 5;\n"
16890             "one  = 1;\n"
16891             "\n"
16892             "oneTwoThree = 123;\n",
16893             format("a += 5;\n"
16894                    "one = 1;\n"
16895                    "\n"
16896                    "oneTwoThree = 123;\n",
16897                    Alignment));
16898   EXPECT_EQ("a           += 5;\n"
16899             "one          = 1;\n"
16900             "//\n"
16901             "oneTwoThree  = 123;\n",
16902             format("a += 5;\n"
16903                    "one = 1;\n"
16904                    "//\n"
16905                    "oneTwoThree = 123;\n",
16906                    Alignment));
16907   Alignment.AlignConsecutiveAssignments.AcrossEmptyLines = true;
16908   EXPECT_EQ("a            += 5;\n"
16909             "one         >>= 1;\n"
16910             "\n"
16911             "oneTwoThree   = 123;\n",
16912             format("a += 5;\n"
16913                    "one >>= 1;\n"
16914                    "\n"
16915                    "oneTwoThree = 123;\n",
16916                    Alignment));
16917   EXPECT_EQ("a            += 5;\n"
16918             "one           = 1;\n"
16919             "//\n"
16920             "oneTwoThree <<= 123;\n",
16921             format("a += 5;\n"
16922                    "one = 1;\n"
16923                    "//\n"
16924                    "oneTwoThree <<= 123;\n",
16925                    Alignment));
16926 }
16927 
16928 TEST_F(FormatTest, AlignConsecutiveAssignments) {
16929   FormatStyle Alignment = getLLVMStyle();
16930   Alignment.AlignConsecutiveMacros.Enabled = true;
16931   verifyFormat("int a = 5;\n"
16932                "int oneTwoThree = 123;",
16933                Alignment);
16934   verifyFormat("int a = 5;\n"
16935                "int oneTwoThree = 123;",
16936                Alignment);
16937 
16938   Alignment.AlignConsecutiveAssignments.Enabled = true;
16939   verifyFormat("int a           = 5;\n"
16940                "int oneTwoThree = 123;",
16941                Alignment);
16942   verifyFormat("int a           = method();\n"
16943                "int oneTwoThree = 133;",
16944                Alignment);
16945   verifyFormat("aa <= 5;\n"
16946                "a &= 5;\n"
16947                "bcd *= 5;\n"
16948                "ghtyf += 5;\n"
16949                "dvfvdb -= 5;\n"
16950                "a /= 5;\n"
16951                "vdsvsv %= 5;\n"
16952                "sfdbddfbdfbb ^= 5;\n"
16953                "dvsdsv |= 5;\n"
16954                "int dsvvdvsdvvv = 123;",
16955                Alignment);
16956   verifyFormat("int i = 1, j = 10;\n"
16957                "something = 2000;",
16958                Alignment);
16959   verifyFormat("something = 2000;\n"
16960                "int i = 1, j = 10;\n",
16961                Alignment);
16962   verifyFormat("something = 2000;\n"
16963                "another   = 911;\n"
16964                "int i = 1, j = 10;\n"
16965                "oneMore = 1;\n"
16966                "i       = 2;",
16967                Alignment);
16968   verifyFormat("int a   = 5;\n"
16969                "int one = 1;\n"
16970                "method();\n"
16971                "int oneTwoThree = 123;\n"
16972                "int oneTwo      = 12;",
16973                Alignment);
16974   verifyFormat("int oneTwoThree = 123;\n"
16975                "int oneTwo      = 12;\n"
16976                "method();\n",
16977                Alignment);
16978   verifyFormat("int oneTwoThree = 123; // comment\n"
16979                "int oneTwo      = 12;  // comment",
16980                Alignment);
16981   verifyFormat("int f()         = default;\n"
16982                "int &operator() = default;\n"
16983                "int &operator=() {",
16984                Alignment);
16985   verifyFormat("int f()         = delete;\n"
16986                "int &operator() = delete;\n"
16987                "int &operator=() {",
16988                Alignment);
16989   verifyFormat("int f()         = default; // comment\n"
16990                "int &operator() = default; // comment\n"
16991                "int &operator=() {",
16992                Alignment);
16993   verifyFormat("int f()         = default;\n"
16994                "int &operator() = default;\n"
16995                "int &operator==() {",
16996                Alignment);
16997   verifyFormat("int f()         = default;\n"
16998                "int &operator() = default;\n"
16999                "int &operator<=() {",
17000                Alignment);
17001   verifyFormat("int f()         = default;\n"
17002                "int &operator() = default;\n"
17003                "int &operator!=() {",
17004                Alignment);
17005   verifyFormat("int f()         = default;\n"
17006                "int &operator() = default;\n"
17007                "int &operator=();",
17008                Alignment);
17009   verifyFormat("int f()         = delete;\n"
17010                "int &operator() = delete;\n"
17011                "int &operator=();",
17012                Alignment);
17013   verifyFormat("/* long long padding */ int f() = default;\n"
17014                "int &operator()                 = default;\n"
17015                "int &operator/**/ =();",
17016                Alignment);
17017   // https://llvm.org/PR33697
17018   FormatStyle AlignmentWithPenalty = getLLVMStyle();
17019   AlignmentWithPenalty.AlignConsecutiveAssignments.Enabled = true;
17020   AlignmentWithPenalty.PenaltyReturnTypeOnItsOwnLine = 5000;
17021   verifyFormat("class SSSSSSSSSSSSSSSSSSSSSSSSSSSS {\n"
17022                "  void f() = delete;\n"
17023                "  SSSSSSSSSSSSSSSSSSSSSSSSSSSS &operator=(\n"
17024                "      const SSSSSSSSSSSSSSSSSSSSSSSSSSSS &other) = delete;\n"
17025                "};\n",
17026                AlignmentWithPenalty);
17027 
17028   // Bug 25167
17029   /* Uncomment when fixed
17030     verifyFormat("#if A\n"
17031                  "#else\n"
17032                  "int aaaaaaaa = 12;\n"
17033                  "#endif\n"
17034                  "#if B\n"
17035                  "#else\n"
17036                  "int a = 12;\n"
17037                  "#endif\n",
17038                  Alignment);
17039     verifyFormat("enum foo {\n"
17040                  "#if A\n"
17041                  "#else\n"
17042                  "  aaaaaaaa = 12;\n"
17043                  "#endif\n"
17044                  "#if B\n"
17045                  "#else\n"
17046                  "  a = 12;\n"
17047                  "#endif\n"
17048                  "};\n",
17049                  Alignment);
17050   */
17051 
17052   EXPECT_EQ("int a = 5;\n"
17053             "\n"
17054             "int oneTwoThree = 123;",
17055             format("int a       = 5;\n"
17056                    "\n"
17057                    "int oneTwoThree= 123;",
17058                    Alignment));
17059   EXPECT_EQ("int a   = 5;\n"
17060             "int one = 1;\n"
17061             "\n"
17062             "int oneTwoThree = 123;",
17063             format("int a = 5;\n"
17064                    "int one = 1;\n"
17065                    "\n"
17066                    "int oneTwoThree = 123;",
17067                    Alignment));
17068   EXPECT_EQ("int a   = 5;\n"
17069             "int one = 1;\n"
17070             "\n"
17071             "int oneTwoThree = 123;\n"
17072             "int oneTwo      = 12;",
17073             format("int a = 5;\n"
17074                    "int one = 1;\n"
17075                    "\n"
17076                    "int oneTwoThree = 123;\n"
17077                    "int oneTwo = 12;",
17078                    Alignment));
17079   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
17080   verifyFormat("#define A \\\n"
17081                "  int aaaa       = 12; \\\n"
17082                "  int b          = 23; \\\n"
17083                "  int ccc        = 234; \\\n"
17084                "  int dddddddddd = 2345;",
17085                Alignment);
17086   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
17087   verifyFormat("#define A               \\\n"
17088                "  int aaaa       = 12;  \\\n"
17089                "  int b          = 23;  \\\n"
17090                "  int ccc        = 234; \\\n"
17091                "  int dddddddddd = 2345;",
17092                Alignment);
17093   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
17094   verifyFormat("#define A                                                      "
17095                "                \\\n"
17096                "  int aaaa       = 12;                                         "
17097                "                \\\n"
17098                "  int b          = 23;                                         "
17099                "                \\\n"
17100                "  int ccc        = 234;                                        "
17101                "                \\\n"
17102                "  int dddddddddd = 2345;",
17103                Alignment);
17104   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
17105                "k = 4, int l = 5,\n"
17106                "                  int m = 6) {\n"
17107                "  int j      = 10;\n"
17108                "  otherThing = 1;\n"
17109                "}",
17110                Alignment);
17111   verifyFormat("void SomeFunction(int parameter = 0) {\n"
17112                "  int i   = 1;\n"
17113                "  int j   = 2;\n"
17114                "  int big = 10000;\n"
17115                "}",
17116                Alignment);
17117   verifyFormat("class C {\n"
17118                "public:\n"
17119                "  int i            = 1;\n"
17120                "  virtual void f() = 0;\n"
17121                "};",
17122                Alignment);
17123   verifyFormat("int i = 1;\n"
17124                "if (SomeType t = getSomething()) {\n"
17125                "}\n"
17126                "int j   = 2;\n"
17127                "int big = 10000;",
17128                Alignment);
17129   verifyFormat("int j = 7;\n"
17130                "for (int k = 0; k < N; ++k) {\n"
17131                "}\n"
17132                "int j   = 2;\n"
17133                "int big = 10000;\n"
17134                "}",
17135                Alignment);
17136   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
17137   verifyFormat("int i = 1;\n"
17138                "LooooooooooongType loooooooooooooooooooooongVariable\n"
17139                "    = someLooooooooooooooooongFunction();\n"
17140                "int j = 2;",
17141                Alignment);
17142   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
17143   verifyFormat("int i = 1;\n"
17144                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
17145                "    someLooooooooooooooooongFunction();\n"
17146                "int j = 2;",
17147                Alignment);
17148 
17149   verifyFormat("auto lambda = []() {\n"
17150                "  auto i = 0;\n"
17151                "  return 0;\n"
17152                "};\n"
17153                "int i  = 0;\n"
17154                "auto v = type{\n"
17155                "    i = 1,   //\n"
17156                "    (i = 2), //\n"
17157                "    i = 3    //\n"
17158                "};",
17159                Alignment);
17160 
17161   verifyFormat(
17162       "int i      = 1;\n"
17163       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
17164       "                          loooooooooooooooooooooongParameterB);\n"
17165       "int j      = 2;",
17166       Alignment);
17167 
17168   verifyFormat("template <typename T, typename T_0 = very_long_type_name_0,\n"
17169                "          typename B   = very_long_type_name_1,\n"
17170                "          typename T_2 = very_long_type_name_2>\n"
17171                "auto foo() {}\n",
17172                Alignment);
17173   verifyFormat("int a, b = 1;\n"
17174                "int c  = 2;\n"
17175                "int dd = 3;\n",
17176                Alignment);
17177   verifyFormat("int aa       = ((1 > 2) ? 3 : 4);\n"
17178                "float b[1][] = {{3.f}};\n",
17179                Alignment);
17180   verifyFormat("for (int i = 0; i < 1; i++)\n"
17181                "  int x = 1;\n",
17182                Alignment);
17183   verifyFormat("for (i = 0; i < 1; i++)\n"
17184                "  x = 1;\n"
17185                "y = 1;\n",
17186                Alignment);
17187 
17188   EXPECT_EQ(Alignment.ReflowComments, true);
17189   Alignment.ColumnLimit = 50;
17190   EXPECT_EQ("int x   = 0;\n"
17191             "int yy  = 1; /// specificlennospace\n"
17192             "int zzz = 2;\n",
17193             format("int x   = 0;\n"
17194                    "int yy  = 1; ///specificlennospace\n"
17195                    "int zzz = 2;\n",
17196                    Alignment));
17197 
17198   verifyFormat("auto aaaaaaaaaaaaaaaaaaaaa = {};\n"
17199                "auto b                     = [] {\n"
17200                "  f();\n"
17201                "  return;\n"
17202                "};",
17203                Alignment);
17204   verifyFormat("auto aaaaaaaaaaaaaaaaaaaaa = {};\n"
17205                "auto b                     = g([] {\n"
17206                "  f();\n"
17207                "  return;\n"
17208                "});",
17209                Alignment);
17210   verifyFormat("auto aaaaaaaaaaaaaaaaaaaaa = {};\n"
17211                "auto b                     = g(param, [] {\n"
17212                "  f();\n"
17213                "  return;\n"
17214                "});",
17215                Alignment);
17216   verifyFormat("auto aaaaaaaaaaaaaaaaaaaaa = {};\n"
17217                "auto b                     = [] {\n"
17218                "  if (condition) {\n"
17219                "    return;\n"
17220                "  }\n"
17221                "};",
17222                Alignment);
17223 
17224   verifyFormat("auto b = f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
17225                "           ccc ? aaaaa : bbbbb,\n"
17226                "           dddddddddddddddddddddddddd);",
17227                Alignment);
17228   // FIXME: https://llvm.org/PR53497
17229   // verifyFormat("auto aaaaaaaaaaaa = f();\n"
17230   //              "auto b            = f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
17231   //              "    ccc ? aaaaa : bbbbb,\n"
17232   //              "    dddddddddddddddddddddddddd);",
17233   //              Alignment);
17234 }
17235 
17236 TEST_F(FormatTest, AlignConsecutiveBitFields) {
17237   FormatStyle Alignment = getLLVMStyle();
17238   Alignment.AlignConsecutiveBitFields.Enabled = true;
17239   verifyFormat("int const a     : 5;\n"
17240                "int oneTwoThree : 23;",
17241                Alignment);
17242 
17243   // Initializers are allowed starting with c++2a
17244   verifyFormat("int const a     : 5 = 1;\n"
17245                "int oneTwoThree : 23 = 0;",
17246                Alignment);
17247 
17248   Alignment.AlignConsecutiveDeclarations.Enabled = true;
17249   verifyFormat("int const a           : 5;\n"
17250                "int       oneTwoThree : 23;",
17251                Alignment);
17252 
17253   verifyFormat("int const a           : 5;  // comment\n"
17254                "int       oneTwoThree : 23; // comment",
17255                Alignment);
17256 
17257   verifyFormat("int const a           : 5 = 1;\n"
17258                "int       oneTwoThree : 23 = 0;",
17259                Alignment);
17260 
17261   Alignment.AlignConsecutiveAssignments.Enabled = true;
17262   verifyFormat("int const a           : 5  = 1;\n"
17263                "int       oneTwoThree : 23 = 0;",
17264                Alignment);
17265   verifyFormat("int const a           : 5  = {1};\n"
17266                "int       oneTwoThree : 23 = 0;",
17267                Alignment);
17268 
17269   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_None;
17270   verifyFormat("int const a          :5;\n"
17271                "int       oneTwoThree:23;",
17272                Alignment);
17273 
17274   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_Before;
17275   verifyFormat("int const a           :5;\n"
17276                "int       oneTwoThree :23;",
17277                Alignment);
17278 
17279   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_After;
17280   verifyFormat("int const a          : 5;\n"
17281                "int       oneTwoThree: 23;",
17282                Alignment);
17283 
17284   // Known limitations: ':' is only recognized as a bitfield colon when
17285   // followed by a number.
17286   /*
17287   verifyFormat("int oneTwoThree : SOME_CONSTANT;\n"
17288                "int a           : 5;",
17289                Alignment);
17290   */
17291 }
17292 
17293 TEST_F(FormatTest, AlignConsecutiveDeclarations) {
17294   FormatStyle Alignment = getLLVMStyle();
17295   Alignment.AlignConsecutiveMacros.Enabled = true;
17296   Alignment.PointerAlignment = FormatStyle::PAS_Right;
17297   verifyFormat("float const a = 5;\n"
17298                "int oneTwoThree = 123;",
17299                Alignment);
17300   verifyFormat("int a = 5;\n"
17301                "float const oneTwoThree = 123;",
17302                Alignment);
17303 
17304   Alignment.AlignConsecutiveDeclarations.Enabled = true;
17305   verifyFormat("float const a = 5;\n"
17306                "int         oneTwoThree = 123;",
17307                Alignment);
17308   verifyFormat("int         a = method();\n"
17309                "float const oneTwoThree = 133;",
17310                Alignment);
17311   verifyFormat("int i = 1, j = 10;\n"
17312                "something = 2000;",
17313                Alignment);
17314   verifyFormat("something = 2000;\n"
17315                "int i = 1, j = 10;\n",
17316                Alignment);
17317   verifyFormat("float      something = 2000;\n"
17318                "double     another = 911;\n"
17319                "int        i = 1, j = 10;\n"
17320                "const int *oneMore = 1;\n"
17321                "unsigned   i = 2;",
17322                Alignment);
17323   verifyFormat("float a = 5;\n"
17324                "int   one = 1;\n"
17325                "method();\n"
17326                "const double       oneTwoThree = 123;\n"
17327                "const unsigned int oneTwo = 12;",
17328                Alignment);
17329   verifyFormat("int      oneTwoThree{0}; // comment\n"
17330                "unsigned oneTwo;         // comment",
17331                Alignment);
17332   verifyFormat("unsigned int       *a;\n"
17333                "int                *b;\n"
17334                "unsigned int Const *c;\n"
17335                "unsigned int const *d;\n"
17336                "unsigned int Const &e;\n"
17337                "unsigned int const &f;",
17338                Alignment);
17339   verifyFormat("Const unsigned int *c;\n"
17340                "const unsigned int *d;\n"
17341                "Const unsigned int &e;\n"
17342                "const unsigned int &f;\n"
17343                "const unsigned      g;\n"
17344                "Const unsigned      h;",
17345                Alignment);
17346   EXPECT_EQ("float const a = 5;\n"
17347             "\n"
17348             "int oneTwoThree = 123;",
17349             format("float const   a = 5;\n"
17350                    "\n"
17351                    "int           oneTwoThree= 123;",
17352                    Alignment));
17353   EXPECT_EQ("float a = 5;\n"
17354             "int   one = 1;\n"
17355             "\n"
17356             "unsigned oneTwoThree = 123;",
17357             format("float    a = 5;\n"
17358                    "int      one = 1;\n"
17359                    "\n"
17360                    "unsigned oneTwoThree = 123;",
17361                    Alignment));
17362   EXPECT_EQ("float a = 5;\n"
17363             "int   one = 1;\n"
17364             "\n"
17365             "unsigned oneTwoThree = 123;\n"
17366             "int      oneTwo = 12;",
17367             format("float    a = 5;\n"
17368                    "int one = 1;\n"
17369                    "\n"
17370                    "unsigned oneTwoThree = 123;\n"
17371                    "int oneTwo = 12;",
17372                    Alignment));
17373   // Function prototype alignment
17374   verifyFormat("int    a();\n"
17375                "double b();",
17376                Alignment);
17377   verifyFormat("int    a(int x);\n"
17378                "double b();",
17379                Alignment);
17380   unsigned OldColumnLimit = Alignment.ColumnLimit;
17381   // We need to set ColumnLimit to zero, in order to stress nested alignments,
17382   // otherwise the function parameters will be re-flowed onto a single line.
17383   Alignment.ColumnLimit = 0;
17384   EXPECT_EQ("int    a(int   x,\n"
17385             "         float y);\n"
17386             "double b(int    x,\n"
17387             "         double y);",
17388             format("int a(int x,\n"
17389                    " float y);\n"
17390                    "double b(int x,\n"
17391                    " double y);",
17392                    Alignment));
17393   // This ensures that function parameters of function declarations are
17394   // correctly indented when their owning functions are indented.
17395   // The failure case here is for 'double y' to not be indented enough.
17396   EXPECT_EQ("double a(int x);\n"
17397             "int    b(int    y,\n"
17398             "         double z);",
17399             format("double a(int x);\n"
17400                    "int b(int y,\n"
17401                    " double z);",
17402                    Alignment));
17403   // Set ColumnLimit low so that we induce wrapping immediately after
17404   // the function name and opening paren.
17405   Alignment.ColumnLimit = 13;
17406   verifyFormat("int function(\n"
17407                "    int  x,\n"
17408                "    bool y);",
17409                Alignment);
17410   Alignment.ColumnLimit = OldColumnLimit;
17411   // Ensure function pointers don't screw up recursive alignment
17412   verifyFormat("int    a(int x, void (*fp)(int y));\n"
17413                "double b();",
17414                Alignment);
17415   Alignment.AlignConsecutiveAssignments.Enabled = true;
17416   // Ensure recursive alignment is broken by function braces, so that the
17417   // "a = 1" does not align with subsequent assignments inside the function
17418   // body.
17419   verifyFormat("int func(int a = 1) {\n"
17420                "  int b  = 2;\n"
17421                "  int cc = 3;\n"
17422                "}",
17423                Alignment);
17424   verifyFormat("float      something = 2000;\n"
17425                "double     another   = 911;\n"
17426                "int        i = 1, j = 10;\n"
17427                "const int *oneMore = 1;\n"
17428                "unsigned   i       = 2;",
17429                Alignment);
17430   verifyFormat("int      oneTwoThree = {0}; // comment\n"
17431                "unsigned oneTwo      = 0;   // comment",
17432                Alignment);
17433   // Make sure that scope is correctly tracked, in the absence of braces
17434   verifyFormat("for (int i = 0; i < n; i++)\n"
17435                "  j = i;\n"
17436                "double x = 1;\n",
17437                Alignment);
17438   verifyFormat("if (int i = 0)\n"
17439                "  j = i;\n"
17440                "double x = 1;\n",
17441                Alignment);
17442   // Ensure operator[] and operator() are comprehended
17443   verifyFormat("struct test {\n"
17444                "  long long int foo();\n"
17445                "  int           operator[](int a);\n"
17446                "  double        bar();\n"
17447                "};\n",
17448                Alignment);
17449   verifyFormat("struct test {\n"
17450                "  long long int foo();\n"
17451                "  int           operator()(int a);\n"
17452                "  double        bar();\n"
17453                "};\n",
17454                Alignment);
17455   // http://llvm.org/PR52914
17456   verifyFormat("char *a[]     = {\"a\", // comment\n"
17457                "                 \"bb\"};\n"
17458                "int   bbbbbbb = 0;",
17459                Alignment);
17460 
17461   // PAS_Right
17462   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
17463             "  int const i   = 1;\n"
17464             "  int      *j   = 2;\n"
17465             "  int       big = 10000;\n"
17466             "\n"
17467             "  unsigned oneTwoThree = 123;\n"
17468             "  int      oneTwo      = 12;\n"
17469             "  method();\n"
17470             "  float k  = 2;\n"
17471             "  int   ll = 10000;\n"
17472             "}",
17473             format("void SomeFunction(int parameter= 0) {\n"
17474                    " int const  i= 1;\n"
17475                    "  int *j=2;\n"
17476                    " int big  =  10000;\n"
17477                    "\n"
17478                    "unsigned oneTwoThree  =123;\n"
17479                    "int oneTwo = 12;\n"
17480                    "  method();\n"
17481                    "float k= 2;\n"
17482                    "int ll=10000;\n"
17483                    "}",
17484                    Alignment));
17485   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
17486             "  int const i   = 1;\n"
17487             "  int     **j   = 2, ***k;\n"
17488             "  int      &k   = i;\n"
17489             "  int     &&l   = i + j;\n"
17490             "  int       big = 10000;\n"
17491             "\n"
17492             "  unsigned oneTwoThree = 123;\n"
17493             "  int      oneTwo      = 12;\n"
17494             "  method();\n"
17495             "  float k  = 2;\n"
17496             "  int   ll = 10000;\n"
17497             "}",
17498             format("void SomeFunction(int parameter= 0) {\n"
17499                    " int const  i= 1;\n"
17500                    "  int **j=2,***k;\n"
17501                    "int &k=i;\n"
17502                    "int &&l=i+j;\n"
17503                    " int big  =  10000;\n"
17504                    "\n"
17505                    "unsigned oneTwoThree  =123;\n"
17506                    "int oneTwo = 12;\n"
17507                    "  method();\n"
17508                    "float k= 2;\n"
17509                    "int ll=10000;\n"
17510                    "}",
17511                    Alignment));
17512   // variables are aligned at their name, pointers are at the right most
17513   // position
17514   verifyFormat("int   *a;\n"
17515                "int  **b;\n"
17516                "int ***c;\n"
17517                "int    foobar;\n",
17518                Alignment);
17519 
17520   // PAS_Left
17521   FormatStyle AlignmentLeft = Alignment;
17522   AlignmentLeft.PointerAlignment = FormatStyle::PAS_Left;
17523   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
17524             "  int const i   = 1;\n"
17525             "  int*      j   = 2;\n"
17526             "  int       big = 10000;\n"
17527             "\n"
17528             "  unsigned oneTwoThree = 123;\n"
17529             "  int      oneTwo      = 12;\n"
17530             "  method();\n"
17531             "  float k  = 2;\n"
17532             "  int   ll = 10000;\n"
17533             "}",
17534             format("void SomeFunction(int parameter= 0) {\n"
17535                    " int const  i= 1;\n"
17536                    "  int *j=2;\n"
17537                    " int big  =  10000;\n"
17538                    "\n"
17539                    "unsigned oneTwoThree  =123;\n"
17540                    "int oneTwo = 12;\n"
17541                    "  method();\n"
17542                    "float k= 2;\n"
17543                    "int ll=10000;\n"
17544                    "}",
17545                    AlignmentLeft));
17546   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
17547             "  int const i   = 1;\n"
17548             "  int**     j   = 2;\n"
17549             "  int&      k   = i;\n"
17550             "  int&&     l   = i + j;\n"
17551             "  int       big = 10000;\n"
17552             "\n"
17553             "  unsigned oneTwoThree = 123;\n"
17554             "  int      oneTwo      = 12;\n"
17555             "  method();\n"
17556             "  float k  = 2;\n"
17557             "  int   ll = 10000;\n"
17558             "}",
17559             format("void SomeFunction(int parameter= 0) {\n"
17560                    " int const  i= 1;\n"
17561                    "  int **j=2;\n"
17562                    "int &k=i;\n"
17563                    "int &&l=i+j;\n"
17564                    " int big  =  10000;\n"
17565                    "\n"
17566                    "unsigned oneTwoThree  =123;\n"
17567                    "int oneTwo = 12;\n"
17568                    "  method();\n"
17569                    "float k= 2;\n"
17570                    "int ll=10000;\n"
17571                    "}",
17572                    AlignmentLeft));
17573   // variables are aligned at their name, pointers are at the left most position
17574   verifyFormat("int*   a;\n"
17575                "int**  b;\n"
17576                "int*** c;\n"
17577                "int    foobar;\n",
17578                AlignmentLeft);
17579 
17580   // PAS_Middle
17581   FormatStyle AlignmentMiddle = Alignment;
17582   AlignmentMiddle.PointerAlignment = FormatStyle::PAS_Middle;
17583   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
17584             "  int const i   = 1;\n"
17585             "  int *     j   = 2;\n"
17586             "  int       big = 10000;\n"
17587             "\n"
17588             "  unsigned oneTwoThree = 123;\n"
17589             "  int      oneTwo      = 12;\n"
17590             "  method();\n"
17591             "  float k  = 2;\n"
17592             "  int   ll = 10000;\n"
17593             "}",
17594             format("void SomeFunction(int parameter= 0) {\n"
17595                    " int const  i= 1;\n"
17596                    "  int *j=2;\n"
17597                    " int big  =  10000;\n"
17598                    "\n"
17599                    "unsigned oneTwoThree  =123;\n"
17600                    "int oneTwo = 12;\n"
17601                    "  method();\n"
17602                    "float k= 2;\n"
17603                    "int ll=10000;\n"
17604                    "}",
17605                    AlignmentMiddle));
17606   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
17607             "  int const i   = 1;\n"
17608             "  int **    j   = 2, ***k;\n"
17609             "  int &     k   = i;\n"
17610             "  int &&    l   = i + j;\n"
17611             "  int       big = 10000;\n"
17612             "\n"
17613             "  unsigned oneTwoThree = 123;\n"
17614             "  int      oneTwo      = 12;\n"
17615             "  method();\n"
17616             "  float k  = 2;\n"
17617             "  int   ll = 10000;\n"
17618             "}",
17619             format("void SomeFunction(int parameter= 0) {\n"
17620                    " int const  i= 1;\n"
17621                    "  int **j=2,***k;\n"
17622                    "int &k=i;\n"
17623                    "int &&l=i+j;\n"
17624                    " int big  =  10000;\n"
17625                    "\n"
17626                    "unsigned oneTwoThree  =123;\n"
17627                    "int oneTwo = 12;\n"
17628                    "  method();\n"
17629                    "float k= 2;\n"
17630                    "int ll=10000;\n"
17631                    "}",
17632                    AlignmentMiddle));
17633   // variables are aligned at their name, pointers are in the middle
17634   verifyFormat("int *   a;\n"
17635                "int *   b;\n"
17636                "int *** c;\n"
17637                "int     foobar;\n",
17638                AlignmentMiddle);
17639 
17640   Alignment.AlignConsecutiveAssignments.Enabled = false;
17641   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
17642   verifyFormat("#define A \\\n"
17643                "  int       aaaa = 12; \\\n"
17644                "  float     b = 23; \\\n"
17645                "  const int ccc = 234; \\\n"
17646                "  unsigned  dddddddddd = 2345;",
17647                Alignment);
17648   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
17649   verifyFormat("#define A              \\\n"
17650                "  int       aaaa = 12; \\\n"
17651                "  float     b = 23;    \\\n"
17652                "  const int ccc = 234; \\\n"
17653                "  unsigned  dddddddddd = 2345;",
17654                Alignment);
17655   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
17656   Alignment.ColumnLimit = 30;
17657   verifyFormat("#define A                    \\\n"
17658                "  int       aaaa = 12;       \\\n"
17659                "  float     b = 23;          \\\n"
17660                "  const int ccc = 234;       \\\n"
17661                "  int       dddddddddd = 2345;",
17662                Alignment);
17663   Alignment.ColumnLimit = 80;
17664   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
17665                "k = 4, int l = 5,\n"
17666                "                  int m = 6) {\n"
17667                "  const int j = 10;\n"
17668                "  otherThing = 1;\n"
17669                "}",
17670                Alignment);
17671   verifyFormat("void SomeFunction(int parameter = 0) {\n"
17672                "  int const i = 1;\n"
17673                "  int      *j = 2;\n"
17674                "  int       big = 10000;\n"
17675                "}",
17676                Alignment);
17677   verifyFormat("class C {\n"
17678                "public:\n"
17679                "  int          i = 1;\n"
17680                "  virtual void f() = 0;\n"
17681                "};",
17682                Alignment);
17683   verifyFormat("float i = 1;\n"
17684                "if (SomeType t = getSomething()) {\n"
17685                "}\n"
17686                "const unsigned j = 2;\n"
17687                "int            big = 10000;",
17688                Alignment);
17689   verifyFormat("float j = 7;\n"
17690                "for (int k = 0; k < N; ++k) {\n"
17691                "}\n"
17692                "unsigned j = 2;\n"
17693                "int      big = 10000;\n"
17694                "}",
17695                Alignment);
17696   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
17697   verifyFormat("float              i = 1;\n"
17698                "LooooooooooongType loooooooooooooooooooooongVariable\n"
17699                "    = someLooooooooooooooooongFunction();\n"
17700                "int j = 2;",
17701                Alignment);
17702   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
17703   verifyFormat("int                i = 1;\n"
17704                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
17705                "    someLooooooooooooooooongFunction();\n"
17706                "int j = 2;",
17707                Alignment);
17708 
17709   Alignment.AlignConsecutiveAssignments.Enabled = true;
17710   verifyFormat("auto lambda = []() {\n"
17711                "  auto  ii = 0;\n"
17712                "  float j  = 0;\n"
17713                "  return 0;\n"
17714                "};\n"
17715                "int   i  = 0;\n"
17716                "float i2 = 0;\n"
17717                "auto  v  = type{\n"
17718                "    i = 1,   //\n"
17719                "    (i = 2), //\n"
17720                "    i = 3    //\n"
17721                "};",
17722                Alignment);
17723   Alignment.AlignConsecutiveAssignments.Enabled = false;
17724 
17725   verifyFormat(
17726       "int      i = 1;\n"
17727       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
17728       "                          loooooooooooooooooooooongParameterB);\n"
17729       "int      j = 2;",
17730       Alignment);
17731 
17732   // Test interactions with ColumnLimit and AlignConsecutiveAssignments:
17733   // We expect declarations and assignments to align, as long as it doesn't
17734   // exceed the column limit, starting a new alignment sequence whenever it
17735   // happens.
17736   Alignment.AlignConsecutiveAssignments.Enabled = true;
17737   Alignment.ColumnLimit = 30;
17738   verifyFormat("float    ii              = 1;\n"
17739                "unsigned j               = 2;\n"
17740                "int someVerylongVariable = 1;\n"
17741                "AnotherLongType  ll = 123456;\n"
17742                "VeryVeryLongType k  = 2;\n"
17743                "int              myvar = 1;",
17744                Alignment);
17745   Alignment.ColumnLimit = 80;
17746   Alignment.AlignConsecutiveAssignments.Enabled = false;
17747 
17748   verifyFormat(
17749       "template <typename LongTemplate, typename VeryLongTemplateTypeName,\n"
17750       "          typename LongType, typename B>\n"
17751       "auto foo() {}\n",
17752       Alignment);
17753   verifyFormat("float a, b = 1;\n"
17754                "int   c = 2;\n"
17755                "int   dd = 3;\n",
17756                Alignment);
17757   verifyFormat("int   aa = ((1 > 2) ? 3 : 4);\n"
17758                "float b[1][] = {{3.f}};\n",
17759                Alignment);
17760   Alignment.AlignConsecutiveAssignments.Enabled = true;
17761   verifyFormat("float a, b = 1;\n"
17762                "int   c  = 2;\n"
17763                "int   dd = 3;\n",
17764                Alignment);
17765   verifyFormat("int   aa     = ((1 > 2) ? 3 : 4);\n"
17766                "float b[1][] = {{3.f}};\n",
17767                Alignment);
17768   Alignment.AlignConsecutiveAssignments.Enabled = false;
17769 
17770   Alignment.ColumnLimit = 30;
17771   Alignment.BinPackParameters = false;
17772   verifyFormat("void foo(float     a,\n"
17773                "         float     b,\n"
17774                "         int       c,\n"
17775                "         uint32_t *d) {\n"
17776                "  int   *e = 0;\n"
17777                "  float  f = 0;\n"
17778                "  double g = 0;\n"
17779                "}\n"
17780                "void bar(ino_t     a,\n"
17781                "         int       b,\n"
17782                "         uint32_t *c,\n"
17783                "         bool      d) {}\n",
17784                Alignment);
17785   Alignment.BinPackParameters = true;
17786   Alignment.ColumnLimit = 80;
17787 
17788   // Bug 33507
17789   Alignment.PointerAlignment = FormatStyle::PAS_Middle;
17790   verifyFormat(
17791       "auto found = range::find_if(vsProducts, [&](auto * aProduct) {\n"
17792       "  static const Version verVs2017;\n"
17793       "  return true;\n"
17794       "});\n",
17795       Alignment);
17796   Alignment.PointerAlignment = FormatStyle::PAS_Right;
17797 
17798   // See llvm.org/PR35641
17799   Alignment.AlignConsecutiveDeclarations.Enabled = true;
17800   verifyFormat("int func() { //\n"
17801                "  int      b;\n"
17802                "  unsigned c;\n"
17803                "}",
17804                Alignment);
17805 
17806   // See PR37175
17807   FormatStyle Style = getMozillaStyle();
17808   Style.AlignConsecutiveDeclarations.Enabled = true;
17809   EXPECT_EQ("DECOR1 /**/ int8_t /**/ DECOR2 /**/\n"
17810             "foo(int a);",
17811             format("DECOR1 /**/ int8_t /**/ DECOR2 /**/ foo (int a);", Style));
17812 
17813   Alignment.PointerAlignment = FormatStyle::PAS_Left;
17814   verifyFormat("unsigned int*       a;\n"
17815                "int*                b;\n"
17816                "unsigned int Const* c;\n"
17817                "unsigned int const* d;\n"
17818                "unsigned int Const& e;\n"
17819                "unsigned int const& f;",
17820                Alignment);
17821   verifyFormat("Const unsigned int* c;\n"
17822                "const unsigned int* d;\n"
17823                "Const unsigned int& e;\n"
17824                "const unsigned int& f;\n"
17825                "const unsigned      g;\n"
17826                "Const unsigned      h;",
17827                Alignment);
17828 
17829   Alignment.PointerAlignment = FormatStyle::PAS_Middle;
17830   verifyFormat("unsigned int *       a;\n"
17831                "int *                b;\n"
17832                "unsigned int Const * c;\n"
17833                "unsigned int const * d;\n"
17834                "unsigned int Const & e;\n"
17835                "unsigned int const & f;",
17836                Alignment);
17837   verifyFormat("Const unsigned int * c;\n"
17838                "const unsigned int * d;\n"
17839                "Const unsigned int & e;\n"
17840                "const unsigned int & f;\n"
17841                "const unsigned       g;\n"
17842                "Const unsigned       h;",
17843                Alignment);
17844 
17845   // See PR46529
17846   FormatStyle BracedAlign = getLLVMStyle();
17847   BracedAlign.AlignConsecutiveDeclarations.Enabled = true;
17848   verifyFormat("const auto result{[]() {\n"
17849                "  const auto something = 1;\n"
17850                "  return 2;\n"
17851                "}};",
17852                BracedAlign);
17853   verifyFormat("int foo{[]() {\n"
17854                "  int bar{0};\n"
17855                "  return 0;\n"
17856                "}()};",
17857                BracedAlign);
17858   BracedAlign.Cpp11BracedListStyle = false;
17859   verifyFormat("const auto result{ []() {\n"
17860                "  const auto something = 1;\n"
17861                "  return 2;\n"
17862                "} };",
17863                BracedAlign);
17864   verifyFormat("int foo{ []() {\n"
17865                "  int bar{ 0 };\n"
17866                "  return 0;\n"
17867                "}() };",
17868                BracedAlign);
17869 }
17870 
17871 TEST_F(FormatTest, AlignWithLineBreaks) {
17872   auto Style = getLLVMStyleWithColumns(120);
17873 
17874   EXPECT_EQ(Style.AlignConsecutiveAssignments,
17875             FormatStyle::AlignConsecutiveStyle(
17876                 {/*Enabled=*/false, /*AcrossEmptyLines=*/false,
17877                  /*AcrossComments=*/false, /*AlignCompound=*/false,
17878                  /*PadOperators=*/true}));
17879   EXPECT_EQ(Style.AlignConsecutiveDeclarations,
17880             FormatStyle::AlignConsecutiveStyle({}));
17881   verifyFormat("void foo() {\n"
17882                "  int myVar = 5;\n"
17883                "  double x = 3.14;\n"
17884                "  auto str = \"Hello \"\n"
17885                "             \"World\";\n"
17886                "  auto s = \"Hello \"\n"
17887                "           \"Again\";\n"
17888                "}",
17889                Style);
17890 
17891   // clang-format off
17892   verifyFormat("void foo() {\n"
17893                "  const int capacityBefore = Entries.capacity();\n"
17894                "  const auto newEntry = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17895                "                                            std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17896                "  const X newEntry2 = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17897                "                                          std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17898                "}",
17899                Style);
17900   // clang-format on
17901 
17902   Style.AlignConsecutiveAssignments.Enabled = true;
17903   verifyFormat("void foo() {\n"
17904                "  int myVar = 5;\n"
17905                "  double x  = 3.14;\n"
17906                "  auto str  = \"Hello \"\n"
17907                "              \"World\";\n"
17908                "  auto s    = \"Hello \"\n"
17909                "              \"Again\";\n"
17910                "}",
17911                Style);
17912 
17913   // clang-format off
17914   verifyFormat("void foo() {\n"
17915                "  const int capacityBefore = Entries.capacity();\n"
17916                "  const auto newEntry      = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17917                "                                                 std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17918                "  const X newEntry2        = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17919                "                                                 std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17920                "}",
17921                Style);
17922   // clang-format on
17923 
17924   Style.AlignConsecutiveAssignments.Enabled = false;
17925   Style.AlignConsecutiveDeclarations.Enabled = true;
17926   verifyFormat("void foo() {\n"
17927                "  int    myVar = 5;\n"
17928                "  double x = 3.14;\n"
17929                "  auto   str = \"Hello \"\n"
17930                "               \"World\";\n"
17931                "  auto   s = \"Hello \"\n"
17932                "             \"Again\";\n"
17933                "}",
17934                Style);
17935 
17936   // clang-format off
17937   verifyFormat("void foo() {\n"
17938                "  const int  capacityBefore = Entries.capacity();\n"
17939                "  const auto newEntry = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17940                "                                            std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17941                "  const X    newEntry2 = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17942                "                                             std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17943                "}",
17944                Style);
17945   // clang-format on
17946 
17947   Style.AlignConsecutiveAssignments.Enabled = true;
17948   Style.AlignConsecutiveDeclarations.Enabled = true;
17949 
17950   verifyFormat("void foo() {\n"
17951                "  int    myVar = 5;\n"
17952                "  double x     = 3.14;\n"
17953                "  auto   str   = \"Hello \"\n"
17954                "                 \"World\";\n"
17955                "  auto   s     = \"Hello \"\n"
17956                "                 \"Again\";\n"
17957                "}",
17958                Style);
17959 
17960   // clang-format off
17961   verifyFormat("void foo() {\n"
17962                "  const int  capacityBefore = Entries.capacity();\n"
17963                "  const auto newEntry       = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17964                "                                                  std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17965                "  const X    newEntry2      = Entries.emplaceHint(std::piecewise_construct, std::forward_as_tuple(uniqueId),\n"
17966                "                                                  std::forward_as_tuple(id, uniqueId, name, threadCreation));\n"
17967                "}",
17968                Style);
17969   // clang-format on
17970 
17971   Style = getLLVMStyleWithColumns(120);
17972   Style.AlignConsecutiveAssignments.Enabled = true;
17973   Style.ContinuationIndentWidth = 4;
17974   Style.IndentWidth = 4;
17975 
17976   // clang-format off
17977   verifyFormat("void SomeFunc() {\n"
17978                "    newWatcher.maxAgeUsec = ToLegacyTimestamp(GetMaxAge(FromLegacyTimestamp<milliseconds>(monitorFrequencyUsec),\n"
17979                "                                                        seconds(std::uint64_t(maxSampleAge)), maxKeepSamples));\n"
17980                "    newWatcher.maxAge     = ToLegacyTimestamp(GetMaxAge(FromLegacyTimestamp<milliseconds>(monitorFrequencyUsec),\n"
17981                "                                                        seconds(std::uint64_t(maxSampleAge)), maxKeepSamples));\n"
17982                "    newWatcher.max        = ToLegacyTimestamp(GetMaxAge(FromLegacyTimestamp<milliseconds>(monitorFrequencyUsec),\n"
17983                "                                                        seconds(std::uint64_t(maxSampleAge)), maxKeepSamples));\n"
17984                "}",
17985                Style);
17986   // clang-format on
17987 
17988   Style.BinPackArguments = false;
17989 
17990   // clang-format off
17991   verifyFormat("void SomeFunc() {\n"
17992                "    newWatcher.maxAgeUsec = ToLegacyTimestamp(GetMaxAge(\n"
17993                "        FromLegacyTimestamp<milliseconds>(monitorFrequencyUsec), seconds(std::uint64_t(maxSampleAge)), maxKeepSamples));\n"
17994                "    newWatcher.maxAge     = ToLegacyTimestamp(GetMaxAge(\n"
17995                "        FromLegacyTimestamp<milliseconds>(monitorFrequencyUsec), seconds(std::uint64_t(maxSampleAge)), maxKeepSamples));\n"
17996                "    newWatcher.max        = ToLegacyTimestamp(GetMaxAge(\n"
17997                "        FromLegacyTimestamp<milliseconds>(monitorFrequencyUsec), seconds(std::uint64_t(maxSampleAge)), maxKeepSamples));\n"
17998                "}",
17999                Style);
18000   // clang-format on
18001 }
18002 
18003 TEST_F(FormatTest, AlignWithInitializerPeriods) {
18004   auto Style = getLLVMStyleWithColumns(60);
18005 
18006   verifyFormat("void foo1(void) {\n"
18007                "  BYTE p[1] = 1;\n"
18008                "  A B = {.one_foooooooooooooooo = 2,\n"
18009                "         .two_fooooooooooooo = 3,\n"
18010                "         .three_fooooooooooooo = 4};\n"
18011                "  BYTE payload = 2;\n"
18012                "}",
18013                Style);
18014 
18015   Style.AlignConsecutiveAssignments.Enabled = true;
18016   Style.AlignConsecutiveDeclarations.Enabled = false;
18017   verifyFormat("void foo2(void) {\n"
18018                "  BYTE p[1]    = 1;\n"
18019                "  A B          = {.one_foooooooooooooooo = 2,\n"
18020                "                  .two_fooooooooooooo    = 3,\n"
18021                "                  .three_fooooooooooooo  = 4};\n"
18022                "  BYTE payload = 2;\n"
18023                "}",
18024                Style);
18025 
18026   Style.AlignConsecutiveAssignments.Enabled = false;
18027   Style.AlignConsecutiveDeclarations.Enabled = true;
18028   verifyFormat("void foo3(void) {\n"
18029                "  BYTE p[1] = 1;\n"
18030                "  A    B = {.one_foooooooooooooooo = 2,\n"
18031                "            .two_fooooooooooooo = 3,\n"
18032                "            .three_fooooooooooooo = 4};\n"
18033                "  BYTE payload = 2;\n"
18034                "}",
18035                Style);
18036 
18037   Style.AlignConsecutiveAssignments.Enabled = true;
18038   Style.AlignConsecutiveDeclarations.Enabled = true;
18039   verifyFormat("void foo4(void) {\n"
18040                "  BYTE p[1]    = 1;\n"
18041                "  A    B       = {.one_foooooooooooooooo = 2,\n"
18042                "                  .two_fooooooooooooo    = 3,\n"
18043                "                  .three_fooooooooooooo  = 4};\n"
18044                "  BYTE payload = 2;\n"
18045                "}",
18046                Style);
18047 }
18048 
18049 TEST_F(FormatTest, LinuxBraceBreaking) {
18050   FormatStyle LinuxBraceStyle = getLLVMStyle();
18051   LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux;
18052   verifyFormat("namespace a\n"
18053                "{\n"
18054                "class A\n"
18055                "{\n"
18056                "  void f()\n"
18057                "  {\n"
18058                "    if (true) {\n"
18059                "      a();\n"
18060                "      b();\n"
18061                "    } else {\n"
18062                "      a();\n"
18063                "    }\n"
18064                "  }\n"
18065                "  void g() { return; }\n"
18066                "};\n"
18067                "struct B {\n"
18068                "  int x;\n"
18069                "};\n"
18070                "} // namespace a\n",
18071                LinuxBraceStyle);
18072   verifyFormat("enum X {\n"
18073                "  Y = 0,\n"
18074                "}\n",
18075                LinuxBraceStyle);
18076   verifyFormat("struct S {\n"
18077                "  int Type;\n"
18078                "  union {\n"
18079                "    int x;\n"
18080                "    double y;\n"
18081                "  } Value;\n"
18082                "  class C\n"
18083                "  {\n"
18084                "    MyFavoriteType Value;\n"
18085                "  } Class;\n"
18086                "}\n",
18087                LinuxBraceStyle);
18088 }
18089 
18090 TEST_F(FormatTest, MozillaBraceBreaking) {
18091   FormatStyle MozillaBraceStyle = getLLVMStyle();
18092   MozillaBraceStyle.BreakBeforeBraces = FormatStyle::BS_Mozilla;
18093   MozillaBraceStyle.FixNamespaceComments = false;
18094   verifyFormat("namespace a {\n"
18095                "class A\n"
18096                "{\n"
18097                "  void f()\n"
18098                "  {\n"
18099                "    if (true) {\n"
18100                "      a();\n"
18101                "      b();\n"
18102                "    }\n"
18103                "  }\n"
18104                "  void g() { return; }\n"
18105                "};\n"
18106                "enum E\n"
18107                "{\n"
18108                "  A,\n"
18109                "  // foo\n"
18110                "  B,\n"
18111                "  C\n"
18112                "};\n"
18113                "struct B\n"
18114                "{\n"
18115                "  int x;\n"
18116                "};\n"
18117                "}\n",
18118                MozillaBraceStyle);
18119   verifyFormat("struct S\n"
18120                "{\n"
18121                "  int Type;\n"
18122                "  union\n"
18123                "  {\n"
18124                "    int x;\n"
18125                "    double y;\n"
18126                "  } Value;\n"
18127                "  class C\n"
18128                "  {\n"
18129                "    MyFavoriteType Value;\n"
18130                "  } Class;\n"
18131                "}\n",
18132                MozillaBraceStyle);
18133 }
18134 
18135 TEST_F(FormatTest, StroustrupBraceBreaking) {
18136   FormatStyle StroustrupBraceStyle = getLLVMStyle();
18137   StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
18138   verifyFormat("namespace a {\n"
18139                "class A {\n"
18140                "  void f()\n"
18141                "  {\n"
18142                "    if (true) {\n"
18143                "      a();\n"
18144                "      b();\n"
18145                "    }\n"
18146                "  }\n"
18147                "  void g() { return; }\n"
18148                "};\n"
18149                "struct B {\n"
18150                "  int x;\n"
18151                "};\n"
18152                "} // namespace a\n",
18153                StroustrupBraceStyle);
18154 
18155   verifyFormat("void foo()\n"
18156                "{\n"
18157                "  if (a) {\n"
18158                "    a();\n"
18159                "  }\n"
18160                "  else {\n"
18161                "    b();\n"
18162                "  }\n"
18163                "}\n",
18164                StroustrupBraceStyle);
18165 
18166   verifyFormat("#ifdef _DEBUG\n"
18167                "int foo(int i = 0)\n"
18168                "#else\n"
18169                "int foo(int i = 5)\n"
18170                "#endif\n"
18171                "{\n"
18172                "  return i;\n"
18173                "}",
18174                StroustrupBraceStyle);
18175 
18176   verifyFormat("void foo() {}\n"
18177                "void bar()\n"
18178                "#ifdef _DEBUG\n"
18179                "{\n"
18180                "  foo();\n"
18181                "}\n"
18182                "#else\n"
18183                "{\n"
18184                "}\n"
18185                "#endif",
18186                StroustrupBraceStyle);
18187 
18188   verifyFormat("void foobar() { int i = 5; }\n"
18189                "#ifdef _DEBUG\n"
18190                "void bar() {}\n"
18191                "#else\n"
18192                "void bar() { foobar(); }\n"
18193                "#endif",
18194                StroustrupBraceStyle);
18195 }
18196 
18197 TEST_F(FormatTest, AllmanBraceBreaking) {
18198   FormatStyle AllmanBraceStyle = getLLVMStyle();
18199   AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman;
18200 
18201   EXPECT_EQ("namespace a\n"
18202             "{\n"
18203             "void f();\n"
18204             "void g();\n"
18205             "} // namespace a\n",
18206             format("namespace a\n"
18207                    "{\n"
18208                    "void f();\n"
18209                    "void g();\n"
18210                    "}\n",
18211                    AllmanBraceStyle));
18212 
18213   verifyFormat("namespace a\n"
18214                "{\n"
18215                "class A\n"
18216                "{\n"
18217                "  void f()\n"
18218                "  {\n"
18219                "    if (true)\n"
18220                "    {\n"
18221                "      a();\n"
18222                "      b();\n"
18223                "    }\n"
18224                "  }\n"
18225                "  void g() { return; }\n"
18226                "};\n"
18227                "struct B\n"
18228                "{\n"
18229                "  int x;\n"
18230                "};\n"
18231                "union C\n"
18232                "{\n"
18233                "};\n"
18234                "} // namespace a",
18235                AllmanBraceStyle);
18236 
18237   verifyFormat("void f()\n"
18238                "{\n"
18239                "  if (true)\n"
18240                "  {\n"
18241                "    a();\n"
18242                "  }\n"
18243                "  else if (false)\n"
18244                "  {\n"
18245                "    b();\n"
18246                "  }\n"
18247                "  else\n"
18248                "  {\n"
18249                "    c();\n"
18250                "  }\n"
18251                "}\n",
18252                AllmanBraceStyle);
18253 
18254   verifyFormat("void f()\n"
18255                "{\n"
18256                "  for (int i = 0; i < 10; ++i)\n"
18257                "  {\n"
18258                "    a();\n"
18259                "  }\n"
18260                "  while (false)\n"
18261                "  {\n"
18262                "    b();\n"
18263                "  }\n"
18264                "  do\n"
18265                "  {\n"
18266                "    c();\n"
18267                "  } while (false)\n"
18268                "}\n",
18269                AllmanBraceStyle);
18270 
18271   verifyFormat("void f(int a)\n"
18272                "{\n"
18273                "  switch (a)\n"
18274                "  {\n"
18275                "  case 0:\n"
18276                "    break;\n"
18277                "  case 1:\n"
18278                "  {\n"
18279                "    break;\n"
18280                "  }\n"
18281                "  case 2:\n"
18282                "  {\n"
18283                "  }\n"
18284                "  break;\n"
18285                "  default:\n"
18286                "    break;\n"
18287                "  }\n"
18288                "}\n",
18289                AllmanBraceStyle);
18290 
18291   verifyFormat("enum X\n"
18292                "{\n"
18293                "  Y = 0,\n"
18294                "}\n",
18295                AllmanBraceStyle);
18296   verifyFormat("enum X\n"
18297                "{\n"
18298                "  Y = 0\n"
18299                "}\n",
18300                AllmanBraceStyle);
18301 
18302   verifyFormat("@interface BSApplicationController ()\n"
18303                "{\n"
18304                "@private\n"
18305                "  id _extraIvar;\n"
18306                "}\n"
18307                "@end\n",
18308                AllmanBraceStyle);
18309 
18310   verifyFormat("#ifdef _DEBUG\n"
18311                "int foo(int i = 0)\n"
18312                "#else\n"
18313                "int foo(int i = 5)\n"
18314                "#endif\n"
18315                "{\n"
18316                "  return i;\n"
18317                "}",
18318                AllmanBraceStyle);
18319 
18320   verifyFormat("void foo() {}\n"
18321                "void bar()\n"
18322                "#ifdef _DEBUG\n"
18323                "{\n"
18324                "  foo();\n"
18325                "}\n"
18326                "#else\n"
18327                "{\n"
18328                "}\n"
18329                "#endif",
18330                AllmanBraceStyle);
18331 
18332   verifyFormat("void foobar() { int i = 5; }\n"
18333                "#ifdef _DEBUG\n"
18334                "void bar() {}\n"
18335                "#else\n"
18336                "void bar() { foobar(); }\n"
18337                "#endif",
18338                AllmanBraceStyle);
18339 
18340   EXPECT_EQ(AllmanBraceStyle.AllowShortLambdasOnASingleLine,
18341             FormatStyle::SLS_All);
18342 
18343   verifyFormat("[](int i) { return i + 2; };\n"
18344                "[](int i, int j)\n"
18345                "{\n"
18346                "  auto x = i + j;\n"
18347                "  auto y = i * j;\n"
18348                "  return x ^ y;\n"
18349                "};\n"
18350                "void foo()\n"
18351                "{\n"
18352                "  auto shortLambda = [](int i) { return i + 2; };\n"
18353                "  auto longLambda = [](int i, int j)\n"
18354                "  {\n"
18355                "    auto x = i + j;\n"
18356                "    auto y = i * j;\n"
18357                "    return x ^ y;\n"
18358                "  };\n"
18359                "}",
18360                AllmanBraceStyle);
18361 
18362   AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
18363 
18364   verifyFormat("[](int i)\n"
18365                "{\n"
18366                "  return i + 2;\n"
18367                "};\n"
18368                "[](int i, int j)\n"
18369                "{\n"
18370                "  auto x = i + j;\n"
18371                "  auto y = i * j;\n"
18372                "  return x ^ y;\n"
18373                "};\n"
18374                "void foo()\n"
18375                "{\n"
18376                "  auto shortLambda = [](int i)\n"
18377                "  {\n"
18378                "    return i + 2;\n"
18379                "  };\n"
18380                "  auto longLambda = [](int i, int j)\n"
18381                "  {\n"
18382                "    auto x = i + j;\n"
18383                "    auto y = i * j;\n"
18384                "    return x ^ y;\n"
18385                "  };\n"
18386                "}",
18387                AllmanBraceStyle);
18388 
18389   // Reset
18390   AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_All;
18391 
18392   // This shouldn't affect ObjC blocks..
18393   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
18394                "  // ...\n"
18395                "  int i;\n"
18396                "}];",
18397                AllmanBraceStyle);
18398   verifyFormat("void (^block)(void) = ^{\n"
18399                "  // ...\n"
18400                "  int i;\n"
18401                "};",
18402                AllmanBraceStyle);
18403   // .. or dict literals.
18404   verifyFormat("void f()\n"
18405                "{\n"
18406                "  // ...\n"
18407                "  [object someMethod:@{@\"a\" : @\"b\"}];\n"
18408                "}",
18409                AllmanBraceStyle);
18410   verifyFormat("void f()\n"
18411                "{\n"
18412                "  // ...\n"
18413                "  [object someMethod:@{a : @\"b\"}];\n"
18414                "}",
18415                AllmanBraceStyle);
18416   verifyFormat("int f()\n"
18417                "{ // comment\n"
18418                "  return 42;\n"
18419                "}",
18420                AllmanBraceStyle);
18421 
18422   AllmanBraceStyle.ColumnLimit = 19;
18423   verifyFormat("void f() { int i; }", AllmanBraceStyle);
18424   AllmanBraceStyle.ColumnLimit = 18;
18425   verifyFormat("void f()\n"
18426                "{\n"
18427                "  int i;\n"
18428                "}",
18429                AllmanBraceStyle);
18430   AllmanBraceStyle.ColumnLimit = 80;
18431 
18432   FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle;
18433   BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine =
18434       FormatStyle::SIS_WithoutElse;
18435   BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
18436   verifyFormat("void f(bool b)\n"
18437                "{\n"
18438                "  if (b)\n"
18439                "  {\n"
18440                "    return;\n"
18441                "  }\n"
18442                "}\n",
18443                BreakBeforeBraceShortIfs);
18444   verifyFormat("void f(bool b)\n"
18445                "{\n"
18446                "  if constexpr (b)\n"
18447                "  {\n"
18448                "    return;\n"
18449                "  }\n"
18450                "}\n",
18451                BreakBeforeBraceShortIfs);
18452   verifyFormat("void f(bool b)\n"
18453                "{\n"
18454                "  if CONSTEXPR (b)\n"
18455                "  {\n"
18456                "    return;\n"
18457                "  }\n"
18458                "}\n",
18459                BreakBeforeBraceShortIfs);
18460   verifyFormat("void f(bool b)\n"
18461                "{\n"
18462                "  if (b) return;\n"
18463                "}\n",
18464                BreakBeforeBraceShortIfs);
18465   verifyFormat("void f(bool b)\n"
18466                "{\n"
18467                "  if constexpr (b) return;\n"
18468                "}\n",
18469                BreakBeforeBraceShortIfs);
18470   verifyFormat("void f(bool b)\n"
18471                "{\n"
18472                "  if CONSTEXPR (b) return;\n"
18473                "}\n",
18474                BreakBeforeBraceShortIfs);
18475   verifyFormat("void f(bool b)\n"
18476                "{\n"
18477                "  while (b)\n"
18478                "  {\n"
18479                "    return;\n"
18480                "  }\n"
18481                "}\n",
18482                BreakBeforeBraceShortIfs);
18483 }
18484 
18485 TEST_F(FormatTest, WhitesmithsBraceBreaking) {
18486   FormatStyle WhitesmithsBraceStyle = getLLVMStyleWithColumns(0);
18487   WhitesmithsBraceStyle.BreakBeforeBraces = FormatStyle::BS_Whitesmiths;
18488 
18489   // Make a few changes to the style for testing purposes
18490   WhitesmithsBraceStyle.AllowShortFunctionsOnASingleLine =
18491       FormatStyle::SFS_Empty;
18492   WhitesmithsBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
18493 
18494   // FIXME: this test case can't decide whether there should be a blank line
18495   // after the ~D() line or not. It adds one if one doesn't exist in the test
18496   // and it removes the line if one exists.
18497   /*
18498   verifyFormat("class A;\n"
18499                "namespace B\n"
18500                "  {\n"
18501                "class C;\n"
18502                "// Comment\n"
18503                "class D\n"
18504                "  {\n"
18505                "public:\n"
18506                "  D();\n"
18507                "  ~D() {}\n"
18508                "private:\n"
18509                "  enum E\n"
18510                "    {\n"
18511                "    F\n"
18512                "    }\n"
18513                "  };\n"
18514                "  } // namespace B\n",
18515                WhitesmithsBraceStyle);
18516   */
18517 
18518   WhitesmithsBraceStyle.NamespaceIndentation = FormatStyle::NI_None;
18519   verifyFormat("namespace a\n"
18520                "  {\n"
18521                "class A\n"
18522                "  {\n"
18523                "  void f()\n"
18524                "    {\n"
18525                "    if (true)\n"
18526                "      {\n"
18527                "      a();\n"
18528                "      b();\n"
18529                "      }\n"
18530                "    }\n"
18531                "  void g()\n"
18532                "    {\n"
18533                "    return;\n"
18534                "    }\n"
18535                "  };\n"
18536                "struct B\n"
18537                "  {\n"
18538                "  int x;\n"
18539                "  };\n"
18540                "  } // namespace a",
18541                WhitesmithsBraceStyle);
18542 
18543   verifyFormat("namespace a\n"
18544                "  {\n"
18545                "namespace b\n"
18546                "  {\n"
18547                "class A\n"
18548                "  {\n"
18549                "  void f()\n"
18550                "    {\n"
18551                "    if (true)\n"
18552                "      {\n"
18553                "      a();\n"
18554                "      b();\n"
18555                "      }\n"
18556                "    }\n"
18557                "  void g()\n"
18558                "    {\n"
18559                "    return;\n"
18560                "    }\n"
18561                "  };\n"
18562                "struct B\n"
18563                "  {\n"
18564                "  int x;\n"
18565                "  };\n"
18566                "  } // namespace b\n"
18567                "  } // namespace a",
18568                WhitesmithsBraceStyle);
18569 
18570   WhitesmithsBraceStyle.NamespaceIndentation = FormatStyle::NI_Inner;
18571   verifyFormat("namespace a\n"
18572                "  {\n"
18573                "namespace b\n"
18574                "  {\n"
18575                "  class A\n"
18576                "    {\n"
18577                "    void f()\n"
18578                "      {\n"
18579                "      if (true)\n"
18580                "        {\n"
18581                "        a();\n"
18582                "        b();\n"
18583                "        }\n"
18584                "      }\n"
18585                "    void g()\n"
18586                "      {\n"
18587                "      return;\n"
18588                "      }\n"
18589                "    };\n"
18590                "  struct B\n"
18591                "    {\n"
18592                "    int x;\n"
18593                "    };\n"
18594                "  } // namespace b\n"
18595                "  } // namespace a",
18596                WhitesmithsBraceStyle);
18597 
18598   WhitesmithsBraceStyle.NamespaceIndentation = FormatStyle::NI_All;
18599   verifyFormat("namespace a\n"
18600                "  {\n"
18601                "  namespace b\n"
18602                "    {\n"
18603                "    class A\n"
18604                "      {\n"
18605                "      void f()\n"
18606                "        {\n"
18607                "        if (true)\n"
18608                "          {\n"
18609                "          a();\n"
18610                "          b();\n"
18611                "          }\n"
18612                "        }\n"
18613                "      void g()\n"
18614                "        {\n"
18615                "        return;\n"
18616                "        }\n"
18617                "      };\n"
18618                "    struct B\n"
18619                "      {\n"
18620                "      int x;\n"
18621                "      };\n"
18622                "    } // namespace b\n"
18623                "  }   // namespace a",
18624                WhitesmithsBraceStyle);
18625 
18626   verifyFormat("void f()\n"
18627                "  {\n"
18628                "  if (true)\n"
18629                "    {\n"
18630                "    a();\n"
18631                "    }\n"
18632                "  else if (false)\n"
18633                "    {\n"
18634                "    b();\n"
18635                "    }\n"
18636                "  else\n"
18637                "    {\n"
18638                "    c();\n"
18639                "    }\n"
18640                "  }\n",
18641                WhitesmithsBraceStyle);
18642 
18643   verifyFormat("void f()\n"
18644                "  {\n"
18645                "  for (int i = 0; i < 10; ++i)\n"
18646                "    {\n"
18647                "    a();\n"
18648                "    }\n"
18649                "  while (false)\n"
18650                "    {\n"
18651                "    b();\n"
18652                "    }\n"
18653                "  do\n"
18654                "    {\n"
18655                "    c();\n"
18656                "    } while (false)\n"
18657                "  }\n",
18658                WhitesmithsBraceStyle);
18659 
18660   WhitesmithsBraceStyle.IndentCaseLabels = true;
18661   verifyFormat("void switchTest1(int a)\n"
18662                "  {\n"
18663                "  switch (a)\n"
18664                "    {\n"
18665                "    case 2:\n"
18666                "      {\n"
18667                "      }\n"
18668                "      break;\n"
18669                "    }\n"
18670                "  }\n",
18671                WhitesmithsBraceStyle);
18672 
18673   verifyFormat("void switchTest2(int a)\n"
18674                "  {\n"
18675                "  switch (a)\n"
18676                "    {\n"
18677                "    case 0:\n"
18678                "      break;\n"
18679                "    case 1:\n"
18680                "      {\n"
18681                "      break;\n"
18682                "      }\n"
18683                "    case 2:\n"
18684                "      {\n"
18685                "      }\n"
18686                "      break;\n"
18687                "    default:\n"
18688                "      break;\n"
18689                "    }\n"
18690                "  }\n",
18691                WhitesmithsBraceStyle);
18692 
18693   verifyFormat("void switchTest3(int a)\n"
18694                "  {\n"
18695                "  switch (a)\n"
18696                "    {\n"
18697                "    case 0:\n"
18698                "      {\n"
18699                "      foo(x);\n"
18700                "      }\n"
18701                "      break;\n"
18702                "    default:\n"
18703                "      {\n"
18704                "      foo(1);\n"
18705                "      }\n"
18706                "      break;\n"
18707                "    }\n"
18708                "  }\n",
18709                WhitesmithsBraceStyle);
18710 
18711   WhitesmithsBraceStyle.IndentCaseLabels = false;
18712 
18713   verifyFormat("void switchTest4(int a)\n"
18714                "  {\n"
18715                "  switch (a)\n"
18716                "    {\n"
18717                "  case 2:\n"
18718                "    {\n"
18719                "    }\n"
18720                "    break;\n"
18721                "    }\n"
18722                "  }\n",
18723                WhitesmithsBraceStyle);
18724 
18725   verifyFormat("void switchTest5(int a)\n"
18726                "  {\n"
18727                "  switch (a)\n"
18728                "    {\n"
18729                "  case 0:\n"
18730                "    break;\n"
18731                "  case 1:\n"
18732                "    {\n"
18733                "    foo();\n"
18734                "    break;\n"
18735                "    }\n"
18736                "  case 2:\n"
18737                "    {\n"
18738                "    }\n"
18739                "    break;\n"
18740                "  default:\n"
18741                "    break;\n"
18742                "    }\n"
18743                "  }\n",
18744                WhitesmithsBraceStyle);
18745 
18746   verifyFormat("void switchTest6(int a)\n"
18747                "  {\n"
18748                "  switch (a)\n"
18749                "    {\n"
18750                "  case 0:\n"
18751                "    {\n"
18752                "    foo(x);\n"
18753                "    }\n"
18754                "    break;\n"
18755                "  default:\n"
18756                "    {\n"
18757                "    foo(1);\n"
18758                "    }\n"
18759                "    break;\n"
18760                "    }\n"
18761                "  }\n",
18762                WhitesmithsBraceStyle);
18763 
18764   verifyFormat("enum X\n"
18765                "  {\n"
18766                "  Y = 0, // testing\n"
18767                "  }\n",
18768                WhitesmithsBraceStyle);
18769 
18770   verifyFormat("enum X\n"
18771                "  {\n"
18772                "  Y = 0\n"
18773                "  }\n",
18774                WhitesmithsBraceStyle);
18775   verifyFormat("enum X\n"
18776                "  {\n"
18777                "  Y = 0,\n"
18778                "  Z = 1\n"
18779                "  };\n",
18780                WhitesmithsBraceStyle);
18781 
18782   verifyFormat("@interface BSApplicationController ()\n"
18783                "  {\n"
18784                "@private\n"
18785                "  id _extraIvar;\n"
18786                "  }\n"
18787                "@end\n",
18788                WhitesmithsBraceStyle);
18789 
18790   verifyFormat("#ifdef _DEBUG\n"
18791                "int foo(int i = 0)\n"
18792                "#else\n"
18793                "int foo(int i = 5)\n"
18794                "#endif\n"
18795                "  {\n"
18796                "  return i;\n"
18797                "  }",
18798                WhitesmithsBraceStyle);
18799 
18800   verifyFormat("void foo() {}\n"
18801                "void bar()\n"
18802                "#ifdef _DEBUG\n"
18803                "  {\n"
18804                "  foo();\n"
18805                "  }\n"
18806                "#else\n"
18807                "  {\n"
18808                "  }\n"
18809                "#endif",
18810                WhitesmithsBraceStyle);
18811 
18812   verifyFormat("void foobar()\n"
18813                "  {\n"
18814                "  int i = 5;\n"
18815                "  }\n"
18816                "#ifdef _DEBUG\n"
18817                "void bar()\n"
18818                "  {\n"
18819                "  }\n"
18820                "#else\n"
18821                "void bar()\n"
18822                "  {\n"
18823                "  foobar();\n"
18824                "  }\n"
18825                "#endif",
18826                WhitesmithsBraceStyle);
18827 
18828   // This shouldn't affect ObjC blocks..
18829   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
18830                "  // ...\n"
18831                "  int i;\n"
18832                "}];",
18833                WhitesmithsBraceStyle);
18834   verifyFormat("void (^block)(void) = ^{\n"
18835                "  // ...\n"
18836                "  int i;\n"
18837                "};",
18838                WhitesmithsBraceStyle);
18839   // .. or dict literals.
18840   verifyFormat("void f()\n"
18841                "  {\n"
18842                "  [object someMethod:@{@\"a\" : @\"b\"}];\n"
18843                "  }",
18844                WhitesmithsBraceStyle);
18845 
18846   verifyFormat("int f()\n"
18847                "  { // comment\n"
18848                "  return 42;\n"
18849                "  }",
18850                WhitesmithsBraceStyle);
18851 
18852   FormatStyle BreakBeforeBraceShortIfs = WhitesmithsBraceStyle;
18853   BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine =
18854       FormatStyle::SIS_OnlyFirstIf;
18855   BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
18856   verifyFormat("void f(bool b)\n"
18857                "  {\n"
18858                "  if (b)\n"
18859                "    {\n"
18860                "    return;\n"
18861                "    }\n"
18862                "  }\n",
18863                BreakBeforeBraceShortIfs);
18864   verifyFormat("void f(bool b)\n"
18865                "  {\n"
18866                "  if (b) return;\n"
18867                "  }\n",
18868                BreakBeforeBraceShortIfs);
18869   verifyFormat("void f(bool b)\n"
18870                "  {\n"
18871                "  while (b)\n"
18872                "    {\n"
18873                "    return;\n"
18874                "    }\n"
18875                "  }\n",
18876                BreakBeforeBraceShortIfs);
18877 }
18878 
18879 TEST_F(FormatTest, GNUBraceBreaking) {
18880   FormatStyle GNUBraceStyle = getLLVMStyle();
18881   GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU;
18882   verifyFormat("namespace a\n"
18883                "{\n"
18884                "class A\n"
18885                "{\n"
18886                "  void f()\n"
18887                "  {\n"
18888                "    int a;\n"
18889                "    {\n"
18890                "      int b;\n"
18891                "    }\n"
18892                "    if (true)\n"
18893                "      {\n"
18894                "        a();\n"
18895                "        b();\n"
18896                "      }\n"
18897                "  }\n"
18898                "  void g() { return; }\n"
18899                "}\n"
18900                "} // namespace a",
18901                GNUBraceStyle);
18902 
18903   verifyFormat("void f()\n"
18904                "{\n"
18905                "  if (true)\n"
18906                "    {\n"
18907                "      a();\n"
18908                "    }\n"
18909                "  else if (false)\n"
18910                "    {\n"
18911                "      b();\n"
18912                "    }\n"
18913                "  else\n"
18914                "    {\n"
18915                "      c();\n"
18916                "    }\n"
18917                "}\n",
18918                GNUBraceStyle);
18919 
18920   verifyFormat("void f()\n"
18921                "{\n"
18922                "  for (int i = 0; i < 10; ++i)\n"
18923                "    {\n"
18924                "      a();\n"
18925                "    }\n"
18926                "  while (false)\n"
18927                "    {\n"
18928                "      b();\n"
18929                "    }\n"
18930                "  do\n"
18931                "    {\n"
18932                "      c();\n"
18933                "    }\n"
18934                "  while (false);\n"
18935                "}\n",
18936                GNUBraceStyle);
18937 
18938   verifyFormat("void f(int a)\n"
18939                "{\n"
18940                "  switch (a)\n"
18941                "    {\n"
18942                "    case 0:\n"
18943                "      break;\n"
18944                "    case 1:\n"
18945                "      {\n"
18946                "        break;\n"
18947                "      }\n"
18948                "    case 2:\n"
18949                "      {\n"
18950                "      }\n"
18951                "      break;\n"
18952                "    default:\n"
18953                "      break;\n"
18954                "    }\n"
18955                "}\n",
18956                GNUBraceStyle);
18957 
18958   verifyFormat("enum X\n"
18959                "{\n"
18960                "  Y = 0,\n"
18961                "}\n",
18962                GNUBraceStyle);
18963 
18964   verifyFormat("@interface BSApplicationController ()\n"
18965                "{\n"
18966                "@private\n"
18967                "  id _extraIvar;\n"
18968                "}\n"
18969                "@end\n",
18970                GNUBraceStyle);
18971 
18972   verifyFormat("#ifdef _DEBUG\n"
18973                "int foo(int i = 0)\n"
18974                "#else\n"
18975                "int foo(int i = 5)\n"
18976                "#endif\n"
18977                "{\n"
18978                "  return i;\n"
18979                "}",
18980                GNUBraceStyle);
18981 
18982   verifyFormat("void foo() {}\n"
18983                "void bar()\n"
18984                "#ifdef _DEBUG\n"
18985                "{\n"
18986                "  foo();\n"
18987                "}\n"
18988                "#else\n"
18989                "{\n"
18990                "}\n"
18991                "#endif",
18992                GNUBraceStyle);
18993 
18994   verifyFormat("void foobar() { int i = 5; }\n"
18995                "#ifdef _DEBUG\n"
18996                "void bar() {}\n"
18997                "#else\n"
18998                "void bar() { foobar(); }\n"
18999                "#endif",
19000                GNUBraceStyle);
19001 }
19002 
19003 TEST_F(FormatTest, WebKitBraceBreaking) {
19004   FormatStyle WebKitBraceStyle = getLLVMStyle();
19005   WebKitBraceStyle.BreakBeforeBraces = FormatStyle::BS_WebKit;
19006   WebKitBraceStyle.FixNamespaceComments = false;
19007   verifyFormat("namespace a {\n"
19008                "class A {\n"
19009                "  void f()\n"
19010                "  {\n"
19011                "    if (true) {\n"
19012                "      a();\n"
19013                "      b();\n"
19014                "    }\n"
19015                "  }\n"
19016                "  void g() { return; }\n"
19017                "};\n"
19018                "enum E {\n"
19019                "  A,\n"
19020                "  // foo\n"
19021                "  B,\n"
19022                "  C\n"
19023                "};\n"
19024                "struct B {\n"
19025                "  int x;\n"
19026                "};\n"
19027                "}\n",
19028                WebKitBraceStyle);
19029   verifyFormat("struct S {\n"
19030                "  int Type;\n"
19031                "  union {\n"
19032                "    int x;\n"
19033                "    double y;\n"
19034                "  } Value;\n"
19035                "  class C {\n"
19036                "    MyFavoriteType Value;\n"
19037                "  } Class;\n"
19038                "};\n",
19039                WebKitBraceStyle);
19040 }
19041 
19042 TEST_F(FormatTest, CatchExceptionReferenceBinding) {
19043   verifyFormat("void f() {\n"
19044                "  try {\n"
19045                "  } catch (const Exception &e) {\n"
19046                "  }\n"
19047                "}\n",
19048                getLLVMStyle());
19049 }
19050 
19051 TEST_F(FormatTest, CatchAlignArrayOfStructuresRightAlignment) {
19052   auto Style = getLLVMStyle();
19053   Style.AlignArrayOfStructures = FormatStyle::AIAS_Right;
19054   Style.AlignConsecutiveAssignments.Enabled = true;
19055   Style.AlignConsecutiveDeclarations.Enabled = true;
19056   verifyFormat("struct test demo[] = {\n"
19057                "    {56,    23, \"hello\"},\n"
19058                "    {-1, 93463, \"world\"},\n"
19059                "    { 7,     5,    \"!!\"}\n"
19060                "};\n",
19061                Style);
19062 
19063   verifyFormat("struct test demo[] = {\n"
19064                "    {56,    23, \"hello\"}, // first line\n"
19065                "    {-1, 93463, \"world\"}, // second line\n"
19066                "    { 7,     5,    \"!!\"}  // third line\n"
19067                "};\n",
19068                Style);
19069 
19070   verifyFormat("struct test demo[4] = {\n"
19071                "    { 56,    23, 21,       \"oh\"}, // first line\n"
19072                "    { -1, 93463, 22,       \"my\"}, // second line\n"
19073                "    {  7,     5,  1, \"goodness\"}  // third line\n"
19074                "    {234,     5,  1, \"gracious\"}  // fourth line\n"
19075                "};\n",
19076                Style);
19077 
19078   verifyFormat("struct test demo[3] = {\n"
19079                "    {56,    23, \"hello\"},\n"
19080                "    {-1, 93463, \"world\"},\n"
19081                "    { 7,     5,    \"!!\"}\n"
19082                "};\n",
19083                Style);
19084 
19085   verifyFormat("struct test demo[3] = {\n"
19086                "    {int{56},    23, \"hello\"},\n"
19087                "    {int{-1}, 93463, \"world\"},\n"
19088                "    { int{7},     5,    \"!!\"}\n"
19089                "};\n",
19090                Style);
19091 
19092   verifyFormat("struct test demo[] = {\n"
19093                "    {56,    23, \"hello\"},\n"
19094                "    {-1, 93463, \"world\"},\n"
19095                "    { 7,     5,    \"!!\"},\n"
19096                "};\n",
19097                Style);
19098 
19099   verifyFormat("test demo[] = {\n"
19100                "    {56,    23, \"hello\"},\n"
19101                "    {-1, 93463, \"world\"},\n"
19102                "    { 7,     5,    \"!!\"},\n"
19103                "};\n",
19104                Style);
19105 
19106   verifyFormat("demo = std::array<struct test, 3>{\n"
19107                "    test{56,    23, \"hello\"},\n"
19108                "    test{-1, 93463, \"world\"},\n"
19109                "    test{ 7,     5,    \"!!\"},\n"
19110                "};\n",
19111                Style);
19112 
19113   verifyFormat("test demo[] = {\n"
19114                "    {56,    23, \"hello\"},\n"
19115                "#if X\n"
19116                "    {-1, 93463, \"world\"},\n"
19117                "#endif\n"
19118                "    { 7,     5,    \"!!\"}\n"
19119                "};\n",
19120                Style);
19121 
19122   verifyFormat(
19123       "test demo[] = {\n"
19124       "    { 7,    23,\n"
19125       "     \"hello world i am a very long line that really, in any\"\n"
19126       "     \"just world, ought to be split over multiple lines\"},\n"
19127       "    {-1, 93463,                                  \"world\"},\n"
19128       "    {56,     5,                                     \"!!\"}\n"
19129       "};\n",
19130       Style);
19131 
19132   verifyFormat("return GradForUnaryCwise(g, {\n"
19133                "                                {{\"sign\"}, \"Sign\",  "
19134                "  {\"x\", \"dy\"}},\n"
19135                "                                {  {\"dx\"},  \"Mul\", {\"dy\""
19136                ", \"sign\"}},\n"
19137                "});\n",
19138                Style);
19139 
19140   Style.ColumnLimit = 0;
19141   EXPECT_EQ(
19142       "test demo[] = {\n"
19143       "    {56,    23, \"hello world i am a very long line that really, "
19144       "in any just world, ought to be split over multiple lines\"},\n"
19145       "    {-1, 93463,                                                  "
19146       "                                                 \"world\"},\n"
19147       "    { 7,     5,                                                  "
19148       "                                                    \"!!\"},\n"
19149       "};",
19150       format("test demo[] = {{56, 23, \"hello world i am a very long line "
19151              "that really, in any just world, ought to be split over multiple "
19152              "lines\"},{-1, 93463, \"world\"},{7, 5, \"!!\"},};",
19153              Style));
19154 
19155   Style.ColumnLimit = 80;
19156   verifyFormat("test demo[] = {\n"
19157                "    {56,    23, /* a comment */ \"hello\"},\n"
19158                "    {-1, 93463,                 \"world\"},\n"
19159                "    { 7,     5,                    \"!!\"}\n"
19160                "};\n",
19161                Style);
19162 
19163   verifyFormat("test demo[] = {\n"
19164                "    {56,    23,                    \"hello\"},\n"
19165                "    {-1, 93463, \"world\" /* comment here */},\n"
19166                "    { 7,     5,                       \"!!\"}\n"
19167                "};\n",
19168                Style);
19169 
19170   verifyFormat("test demo[] = {\n"
19171                "    {56, /* a comment */ 23, \"hello\"},\n"
19172                "    {-1,              93463, \"world\"},\n"
19173                "    { 7,                  5,    \"!!\"}\n"
19174                "};\n",
19175                Style);
19176 
19177   Style.ColumnLimit = 20;
19178   EXPECT_EQ(
19179       "demo = std::array<\n"
19180       "    struct test, 3>{\n"
19181       "    test{\n"
19182       "         56,    23,\n"
19183       "         \"hello \"\n"
19184       "         \"world i \"\n"
19185       "         \"am a very \"\n"
19186       "         \"long line \"\n"
19187       "         \"that \"\n"
19188       "         \"really, \"\n"
19189       "         \"in any \"\n"
19190       "         \"just \"\n"
19191       "         \"world, \"\n"
19192       "         \"ought to \"\n"
19193       "         \"be split \"\n"
19194       "         \"over \"\n"
19195       "         \"multiple \"\n"
19196       "         \"lines\"},\n"
19197       "    test{-1, 93463,\n"
19198       "         \"world\"},\n"
19199       "    test{ 7,     5,\n"
19200       "         \"!!\"   },\n"
19201       "};",
19202       format("demo = std::array<struct test, 3>{test{56, 23, \"hello world "
19203              "i am a very long line that really, in any just world, ought "
19204              "to be split over multiple lines\"},test{-1, 93463, \"world\"},"
19205              "test{7, 5, \"!!\"},};",
19206              Style));
19207   // This caused a core dump by enabling Alignment in the LLVMStyle globally
19208   Style = getLLVMStyleWithColumns(50);
19209   Style.AlignArrayOfStructures = FormatStyle::AIAS_Right;
19210   verifyFormat("static A x = {\n"
19211                "    {{init1, init2, init3, init4},\n"
19212                "     {init1, init2, init3, init4}}\n"
19213                "};",
19214                Style);
19215   // TODO: Fix the indentations below when this option is fully functional.
19216   verifyFormat("int a[][] = {\n"
19217                "    {\n"
19218                "     {0, 2}, //\n"
19219                " {1, 2}  //\n"
19220                "    }\n"
19221                "};",
19222                Style);
19223   Style.ColumnLimit = 100;
19224   EXPECT_EQ(
19225       "test demo[] = {\n"
19226       "    {56,    23,\n"
19227       "     \"hello world i am a very long line that really, in any just world"
19228       ", ought to be split over \"\n"
19229       "     \"multiple lines\"  },\n"
19230       "    {-1, 93463, \"world\"},\n"
19231       "    { 7,     5,    \"!!\"},\n"
19232       "};",
19233       format("test demo[] = {{56, 23, \"hello world i am a very long line "
19234              "that really, in any just world, ought to be split over multiple "
19235              "lines\"},{-1, 93463, \"world\"},{7, 5, \"!!\"},};",
19236              Style));
19237 
19238   Style = getLLVMStyleWithColumns(50);
19239   Style.AlignArrayOfStructures = FormatStyle::AIAS_Right;
19240   verifyFormat("struct test demo[] = {\n"
19241                "    {56,    23, \"hello\"},\n"
19242                "    {-1, 93463, \"world\"},\n"
19243                "    { 7,     5,    \"!!\"}\n"
19244                "};\n"
19245                "static A x = {\n"
19246                "    {{init1, init2, init3, init4},\n"
19247                "     {init1, init2, init3, init4}}\n"
19248                "};",
19249                Style);
19250   Style.ColumnLimit = 100;
19251   Style.AlignConsecutiveAssignments.AcrossComments = true;
19252   Style.AlignConsecutiveDeclarations.AcrossComments = true;
19253   verifyFormat("struct test demo[] = {\n"
19254                "    {56,    23, \"hello\"},\n"
19255                "    {-1, 93463, \"world\"},\n"
19256                "    { 7,     5,    \"!!\"}\n"
19257                "};\n"
19258                "struct test demo[4] = {\n"
19259                "    { 56,    23, 21,       \"oh\"}, // first line\n"
19260                "    { -1, 93463, 22,       \"my\"}, // second line\n"
19261                "    {  7,     5,  1, \"goodness\"}  // third line\n"
19262                "    {234,     5,  1, \"gracious\"}  // fourth line\n"
19263                "};\n",
19264                Style);
19265   EXPECT_EQ(
19266       "test demo[] = {\n"
19267       "    {56,\n"
19268       "     \"hello world i am a very long line that really, in any just world"
19269       ", ought to be split over \"\n"
19270       "     \"multiple lines\",    23},\n"
19271       "    {-1,      \"world\", 93463},\n"
19272       "    { 7,         \"!!\",     5},\n"
19273       "};",
19274       format("test demo[] = {{56, \"hello world i am a very long line "
19275              "that really, in any just world, ought to be split over multiple "
19276              "lines\", 23},{-1, \"world\", 93463},{7, \"!!\", 5},};",
19277              Style));
19278 }
19279 
19280 TEST_F(FormatTest, CatchAlignArrayOfStructuresLeftAlignment) {
19281   auto Style = getLLVMStyle();
19282   Style.AlignArrayOfStructures = FormatStyle::AIAS_Left;
19283   /* FIXME: This case gets misformatted.
19284   verifyFormat("auto foo = Items{\n"
19285                "    Section{0, bar(), },\n"
19286                "    Section{1, boo()  }\n"
19287                "};\n",
19288                Style);
19289   */
19290   verifyFormat("auto foo = Items{\n"
19291                "    Section{\n"
19292                "            0, bar(),\n"
19293                "            }\n"
19294                "};\n",
19295                Style);
19296   verifyFormat("struct test demo[] = {\n"
19297                "    {56, 23,    \"hello\"},\n"
19298                "    {-1, 93463, \"world\"},\n"
19299                "    {7,  5,     \"!!\"   }\n"
19300                "};\n",
19301                Style);
19302   verifyFormat("struct test demo[] = {\n"
19303                "    {56, 23,    \"hello\"}, // first line\n"
19304                "    {-1, 93463, \"world\"}, // second line\n"
19305                "    {7,  5,     \"!!\"   }  // third line\n"
19306                "};\n",
19307                Style);
19308   verifyFormat("struct test demo[4] = {\n"
19309                "    {56,  23,    21, \"oh\"      }, // first line\n"
19310                "    {-1,  93463, 22, \"my\"      }, // second line\n"
19311                "    {7,   5,     1,  \"goodness\"}  // third line\n"
19312                "    {234, 5,     1,  \"gracious\"}  // fourth line\n"
19313                "};\n",
19314                Style);
19315   verifyFormat("struct test demo[3] = {\n"
19316                "    {56, 23,    \"hello\"},\n"
19317                "    {-1, 93463, \"world\"},\n"
19318                "    {7,  5,     \"!!\"   }\n"
19319                "};\n",
19320                Style);
19321 
19322   verifyFormat("struct test demo[3] = {\n"
19323                "    {int{56}, 23,    \"hello\"},\n"
19324                "    {int{-1}, 93463, \"world\"},\n"
19325                "    {int{7},  5,     \"!!\"   }\n"
19326                "};\n",
19327                Style);
19328   verifyFormat("struct test demo[] = {\n"
19329                "    {56, 23,    \"hello\"},\n"
19330                "    {-1, 93463, \"world\"},\n"
19331                "    {7,  5,     \"!!\"   },\n"
19332                "};\n",
19333                Style);
19334   verifyFormat("test demo[] = {\n"
19335                "    {56, 23,    \"hello\"},\n"
19336                "    {-1, 93463, \"world\"},\n"
19337                "    {7,  5,     \"!!\"   },\n"
19338                "};\n",
19339                Style);
19340   verifyFormat("demo = std::array<struct test, 3>{\n"
19341                "    test{56, 23,    \"hello\"},\n"
19342                "    test{-1, 93463, \"world\"},\n"
19343                "    test{7,  5,     \"!!\"   },\n"
19344                "};\n",
19345                Style);
19346   verifyFormat("test demo[] = {\n"
19347                "    {56, 23,    \"hello\"},\n"
19348                "#if X\n"
19349                "    {-1, 93463, \"world\"},\n"
19350                "#endif\n"
19351                "    {7,  5,     \"!!\"   }\n"
19352                "};\n",
19353                Style);
19354   verifyFormat(
19355       "test demo[] = {\n"
19356       "    {7,  23,\n"
19357       "     \"hello world i am a very long line that really, in any\"\n"
19358       "     \"just world, ought to be split over multiple lines\"},\n"
19359       "    {-1, 93463, \"world\"                                 },\n"
19360       "    {56, 5,     \"!!\"                                    }\n"
19361       "};\n",
19362       Style);
19363 
19364   verifyFormat("return GradForUnaryCwise(g, {\n"
19365                "                                {{\"sign\"}, \"Sign\", {\"x\", "
19366                "\"dy\"}   },\n"
19367                "                                {{\"dx\"},   \"Mul\",  "
19368                "{\"dy\", \"sign\"}},\n"
19369                "});\n",
19370                Style);
19371 
19372   Style.ColumnLimit = 0;
19373   EXPECT_EQ(
19374       "test demo[] = {\n"
19375       "    {56, 23,    \"hello world i am a very long line that really, in any "
19376       "just world, ought to be split over multiple lines\"},\n"
19377       "    {-1, 93463, \"world\"                                               "
19378       "                                                   },\n"
19379       "    {7,  5,     \"!!\"                                                  "
19380       "                                                   },\n"
19381       "};",
19382       format("test demo[] = {{56, 23, \"hello world i am a very long line "
19383              "that really, in any just world, ought to be split over multiple "
19384              "lines\"},{-1, 93463, \"world\"},{7, 5, \"!!\"},};",
19385              Style));
19386 
19387   Style.ColumnLimit = 80;
19388   verifyFormat("test demo[] = {\n"
19389                "    {56, 23,    /* a comment */ \"hello\"},\n"
19390                "    {-1, 93463, \"world\"                },\n"
19391                "    {7,  5,     \"!!\"                   }\n"
19392                "};\n",
19393                Style);
19394 
19395   verifyFormat("test demo[] = {\n"
19396                "    {56, 23,    \"hello\"                   },\n"
19397                "    {-1, 93463, \"world\" /* comment here */},\n"
19398                "    {7,  5,     \"!!\"                      }\n"
19399                "};\n",
19400                Style);
19401 
19402   verifyFormat("test demo[] = {\n"
19403                "    {56, /* a comment */ 23, \"hello\"},\n"
19404                "    {-1, 93463,              \"world\"},\n"
19405                "    {7,  5,                  \"!!\"   }\n"
19406                "};\n",
19407                Style);
19408 
19409   Style.ColumnLimit = 20;
19410   EXPECT_EQ(
19411       "demo = std::array<\n"
19412       "    struct test, 3>{\n"
19413       "    test{\n"
19414       "         56, 23,\n"
19415       "         \"hello \"\n"
19416       "         \"world i \"\n"
19417       "         \"am a very \"\n"
19418       "         \"long line \"\n"
19419       "         \"that \"\n"
19420       "         \"really, \"\n"
19421       "         \"in any \"\n"
19422       "         \"just \"\n"
19423       "         \"world, \"\n"
19424       "         \"ought to \"\n"
19425       "         \"be split \"\n"
19426       "         \"over \"\n"
19427       "         \"multiple \"\n"
19428       "         \"lines\"},\n"
19429       "    test{-1, 93463,\n"
19430       "         \"world\"},\n"
19431       "    test{7,  5,\n"
19432       "         \"!!\"   },\n"
19433       "};",
19434       format("demo = std::array<struct test, 3>{test{56, 23, \"hello world "
19435              "i am a very long line that really, in any just world, ought "
19436              "to be split over multiple lines\"},test{-1, 93463, \"world\"},"
19437              "test{7, 5, \"!!\"},};",
19438              Style));
19439 
19440   // This caused a core dump by enabling Alignment in the LLVMStyle globally
19441   Style = getLLVMStyleWithColumns(50);
19442   Style.AlignArrayOfStructures = FormatStyle::AIAS_Left;
19443   verifyFormat("static A x = {\n"
19444                "    {{init1, init2, init3, init4},\n"
19445                "     {init1, init2, init3, init4}}\n"
19446                "};",
19447                Style);
19448   Style.ColumnLimit = 100;
19449   EXPECT_EQ(
19450       "test demo[] = {\n"
19451       "    {56, 23,\n"
19452       "     \"hello world i am a very long line that really, in any just world"
19453       ", ought to be split over \"\n"
19454       "     \"multiple lines\"  },\n"
19455       "    {-1, 93463, \"world\"},\n"
19456       "    {7,  5,     \"!!\"   },\n"
19457       "};",
19458       format("test demo[] = {{56, 23, \"hello world i am a very long line "
19459              "that really, in any just world, ought to be split over multiple "
19460              "lines\"},{-1, 93463, \"world\"},{7, 5, \"!!\"},};",
19461              Style));
19462 }
19463 
19464 TEST_F(FormatTest, UnderstandsPragmas) {
19465   verifyFormat("#pragma omp reduction(| : var)");
19466   verifyFormat("#pragma omp reduction(+ : var)");
19467 
19468   EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string "
19469             "(including parentheses).",
19470             format("#pragma    mark   Any non-hyphenated or hyphenated string "
19471                    "(including parentheses)."));
19472 }
19473 
19474 TEST_F(FormatTest, UnderstandPragmaOption) {
19475   verifyFormat("#pragma option -C -A");
19476 
19477   EXPECT_EQ("#pragma option -C -A", format("#pragma    option   -C   -A"));
19478 }
19479 
19480 TEST_F(FormatTest, OptimizeBreakPenaltyVsExcess) {
19481   FormatStyle Style = getLLVMStyleWithColumns(20);
19482 
19483   // See PR41213
19484   EXPECT_EQ("/*\n"
19485             " *\t9012345\n"
19486             " * /8901\n"
19487             " */",
19488             format("/*\n"
19489                    " *\t9012345 /8901\n"
19490                    " */",
19491                    Style));
19492   EXPECT_EQ("/*\n"
19493             " *345678\n"
19494             " *\t/8901\n"
19495             " */",
19496             format("/*\n"
19497                    " *345678\t/8901\n"
19498                    " */",
19499                    Style));
19500 
19501   verifyFormat("int a; // the\n"
19502                "       // comment",
19503                Style);
19504   EXPECT_EQ("int a; /* first line\n"
19505             "        * second\n"
19506             "        * line third\n"
19507             "        * line\n"
19508             "        */",
19509             format("int a; /* first line\n"
19510                    "        * second\n"
19511                    "        * line third\n"
19512                    "        * line\n"
19513                    "        */",
19514                    Style));
19515   EXPECT_EQ("int a; // first line\n"
19516             "       // second\n"
19517             "       // line third\n"
19518             "       // line",
19519             format("int a; // first line\n"
19520                    "       // second line\n"
19521                    "       // third line",
19522                    Style));
19523 
19524   Style.PenaltyExcessCharacter = 90;
19525   verifyFormat("int a; // the comment", Style);
19526   EXPECT_EQ("int a; // the comment\n"
19527             "       // aaa",
19528             format("int a; // the comment aaa", Style));
19529   EXPECT_EQ("int a; /* first line\n"
19530             "        * second line\n"
19531             "        * third line\n"
19532             "        */",
19533             format("int a; /* first line\n"
19534                    "        * second line\n"
19535                    "        * third line\n"
19536                    "        */",
19537                    Style));
19538   EXPECT_EQ("int a; // first line\n"
19539             "       // second line\n"
19540             "       // third line",
19541             format("int a; // first line\n"
19542                    "       // second line\n"
19543                    "       // third line",
19544                    Style));
19545   // FIXME: Investigate why this is not getting the same layout as the test
19546   // above.
19547   EXPECT_EQ("int a; /* first line\n"
19548             "        * second line\n"
19549             "        * third line\n"
19550             "        */",
19551             format("int a; /* first line second line third line"
19552                    "\n*/",
19553                    Style));
19554 
19555   EXPECT_EQ("// foo bar baz bazfoo\n"
19556             "// foo bar foo bar\n",
19557             format("// foo bar baz bazfoo\n"
19558                    "// foo bar foo           bar\n",
19559                    Style));
19560   EXPECT_EQ("// foo bar baz bazfoo\n"
19561             "// foo bar foo bar\n",
19562             format("// foo bar baz      bazfoo\n"
19563                    "// foo            bar foo bar\n",
19564                    Style));
19565 
19566   // FIXME: Optimally, we'd keep bazfoo on the first line and reflow bar to the
19567   // next one.
19568   EXPECT_EQ("// foo bar baz bazfoo\n"
19569             "// bar foo bar\n",
19570             format("// foo bar baz      bazfoo bar\n"
19571                    "// foo            bar\n",
19572                    Style));
19573 
19574   EXPECT_EQ("// foo bar baz bazfoo\n"
19575             "// foo bar baz bazfoo\n"
19576             "// bar foo bar\n",
19577             format("// foo bar baz      bazfoo\n"
19578                    "// foo bar baz      bazfoo bar\n"
19579                    "// foo bar\n",
19580                    Style));
19581 
19582   EXPECT_EQ("// foo bar baz bazfoo\n"
19583             "// foo bar baz bazfoo\n"
19584             "// bar foo bar\n",
19585             format("// foo bar baz      bazfoo\n"
19586                    "// foo bar baz      bazfoo bar\n"
19587                    "// foo           bar\n",
19588                    Style));
19589 
19590   // Make sure we do not keep protruding characters if strict mode reflow is
19591   // cheaper than keeping protruding characters.
19592   Style.ColumnLimit = 21;
19593   EXPECT_EQ(
19594       "// foo foo foo foo\n"
19595       "// foo foo foo foo\n"
19596       "// foo foo foo foo\n",
19597       format("// foo foo foo foo foo foo foo foo foo foo foo foo\n", Style));
19598 
19599   EXPECT_EQ("int a = /* long block\n"
19600             "           comment */\n"
19601             "    42;",
19602             format("int a = /* long block comment */ 42;", Style));
19603 }
19604 
19605 TEST_F(FormatTest, BreakPenaltyAfterLParen) {
19606   FormatStyle Style = getLLVMStyle();
19607   Style.ColumnLimit = 8;
19608   Style.PenaltyExcessCharacter = 15;
19609   verifyFormat("int foo(\n"
19610                "    int aaaaaaaaaaaaaaaaaaaaaaaa);",
19611                Style);
19612   Style.PenaltyBreakOpenParenthesis = 200;
19613   EXPECT_EQ("int foo(int aaaaaaaaaaaaaaaaaaaaaaaa);",
19614             format("int foo(\n"
19615                    "    int aaaaaaaaaaaaaaaaaaaaaaaa);",
19616                    Style));
19617 }
19618 
19619 TEST_F(FormatTest, BreakPenaltyAfterCastLParen) {
19620   FormatStyle Style = getLLVMStyle();
19621   Style.ColumnLimit = 5;
19622   Style.PenaltyExcessCharacter = 150;
19623   verifyFormat("foo((\n"
19624                "    int)aaaaaaaaaaaaaaaaaaaaaaaa);",
19625 
19626                Style);
19627   Style.PenaltyBreakOpenParenthesis = 100000;
19628   EXPECT_EQ("foo((int)\n"
19629             "        aaaaaaaaaaaaaaaaaaaaaaaa);",
19630             format("foo((\n"
19631                    "int)aaaaaaaaaaaaaaaaaaaaaaaa);",
19632                    Style));
19633 }
19634 
19635 TEST_F(FormatTest, BreakPenaltyAfterForLoopLParen) {
19636   FormatStyle Style = getLLVMStyle();
19637   Style.ColumnLimit = 4;
19638   Style.PenaltyExcessCharacter = 100;
19639   verifyFormat("for (\n"
19640                "    int iiiiiiiiiiiiiiiii =\n"
19641                "        0;\n"
19642                "    iiiiiiiiiiiiiiiii <\n"
19643                "    2;\n"
19644                "    iiiiiiiiiiiiiiiii++) {\n"
19645                "}",
19646 
19647                Style);
19648   Style.PenaltyBreakOpenParenthesis = 1250;
19649   EXPECT_EQ("for (int iiiiiiiiiiiiiiiii =\n"
19650             "         0;\n"
19651             "     iiiiiiiiiiiiiiiii <\n"
19652             "     2;\n"
19653             "     iiiiiiiiiiiiiiiii++) {\n"
19654             "}",
19655             format("for (\n"
19656                    "    int iiiiiiiiiiiiiiiii =\n"
19657                    "        0;\n"
19658                    "    iiiiiiiiiiiiiiiii <\n"
19659                    "    2;\n"
19660                    "    iiiiiiiiiiiiiiiii++) {\n"
19661                    "}",
19662                    Style));
19663 }
19664 
19665 #define EXPECT_ALL_STYLES_EQUAL(Styles)                                        \
19666   for (size_t i = 1; i < Styles.size(); ++i)                                   \
19667   EXPECT_EQ(Styles[0], Styles[i])                                              \
19668       << "Style #" << i << " of " << Styles.size() << " differs from Style #0"
19669 
19670 TEST_F(FormatTest, GetsPredefinedStyleByName) {
19671   SmallVector<FormatStyle, 3> Styles;
19672   Styles.resize(3);
19673 
19674   Styles[0] = getLLVMStyle();
19675   EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1]));
19676   EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2]));
19677   EXPECT_ALL_STYLES_EQUAL(Styles);
19678 
19679   Styles[0] = getGoogleStyle();
19680   EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1]));
19681   EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2]));
19682   EXPECT_ALL_STYLES_EQUAL(Styles);
19683 
19684   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
19685   EXPECT_TRUE(
19686       getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1]));
19687   EXPECT_TRUE(
19688       getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2]));
19689   EXPECT_ALL_STYLES_EQUAL(Styles);
19690 
19691   Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp);
19692   EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1]));
19693   EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2]));
19694   EXPECT_ALL_STYLES_EQUAL(Styles);
19695 
19696   Styles[0] = getMozillaStyle();
19697   EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1]));
19698   EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2]));
19699   EXPECT_ALL_STYLES_EQUAL(Styles);
19700 
19701   Styles[0] = getWebKitStyle();
19702   EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1]));
19703   EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2]));
19704   EXPECT_ALL_STYLES_EQUAL(Styles);
19705 
19706   Styles[0] = getGNUStyle();
19707   EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1]));
19708   EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2]));
19709   EXPECT_ALL_STYLES_EQUAL(Styles);
19710 
19711   EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0]));
19712 }
19713 
19714 TEST_F(FormatTest, GetsCorrectBasedOnStyle) {
19715   SmallVector<FormatStyle, 8> Styles;
19716   Styles.resize(2);
19717 
19718   Styles[0] = getGoogleStyle();
19719   Styles[1] = getLLVMStyle();
19720   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
19721   EXPECT_ALL_STYLES_EQUAL(Styles);
19722 
19723   Styles.resize(5);
19724   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
19725   Styles[1] = getLLVMStyle();
19726   Styles[1].Language = FormatStyle::LK_JavaScript;
19727   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
19728 
19729   Styles[2] = getLLVMStyle();
19730   Styles[2].Language = FormatStyle::LK_JavaScript;
19731   EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n"
19732                                   "BasedOnStyle: Google",
19733                                   &Styles[2])
19734                    .value());
19735 
19736   Styles[3] = getLLVMStyle();
19737   Styles[3].Language = FormatStyle::LK_JavaScript;
19738   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n"
19739                                   "Language: JavaScript",
19740                                   &Styles[3])
19741                    .value());
19742 
19743   Styles[4] = getLLVMStyle();
19744   Styles[4].Language = FormatStyle::LK_JavaScript;
19745   EXPECT_EQ(0, parseConfiguration("---\n"
19746                                   "BasedOnStyle: LLVM\n"
19747                                   "IndentWidth: 123\n"
19748                                   "---\n"
19749                                   "BasedOnStyle: Google\n"
19750                                   "Language: JavaScript",
19751                                   &Styles[4])
19752                    .value());
19753   EXPECT_ALL_STYLES_EQUAL(Styles);
19754 }
19755 
19756 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME)                             \
19757   Style.FIELD = false;                                                         \
19758   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value());      \
19759   EXPECT_TRUE(Style.FIELD);                                                    \
19760   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value());     \
19761   EXPECT_FALSE(Style.FIELD);
19762 
19763 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD)
19764 
19765 #define CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, CONFIG_NAME)              \
19766   Style.STRUCT.FIELD = false;                                                  \
19767   EXPECT_EQ(0,                                                                 \
19768             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": true", &Style)   \
19769                 .value());                                                     \
19770   EXPECT_TRUE(Style.STRUCT.FIELD);                                             \
19771   EXPECT_EQ(0,                                                                 \
19772             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": false", &Style)  \
19773                 .value());                                                     \
19774   EXPECT_FALSE(Style.STRUCT.FIELD);
19775 
19776 #define CHECK_PARSE_NESTED_BOOL(STRUCT, FIELD)                                 \
19777   CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, #FIELD)
19778 
19779 #define CHECK_PARSE(TEXT, FIELD, VALUE)                                        \
19780   EXPECT_NE(VALUE, Style.FIELD) << "Initial value already the same!";          \
19781   EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value());                      \
19782   EXPECT_EQ(VALUE, Style.FIELD) << "Unexpected value after parsing!"
19783 
19784 TEST_F(FormatTest, ParsesConfigurationBools) {
19785   FormatStyle Style = {};
19786   Style.Language = FormatStyle::LK_Cpp;
19787   CHECK_PARSE_BOOL(AlignTrailingComments);
19788   CHECK_PARSE_BOOL(AllowAllArgumentsOnNextLine);
19789   CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
19790   CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine);
19791   CHECK_PARSE_BOOL(AllowShortEnumsOnASingleLine);
19792   CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
19793   CHECK_PARSE_BOOL(BinPackArguments);
19794   CHECK_PARSE_BOOL(BinPackParameters);
19795   CHECK_PARSE_BOOL(BreakAfterJavaFieldAnnotations);
19796   CHECK_PARSE_BOOL(BreakBeforeTernaryOperators);
19797   CHECK_PARSE_BOOL(BreakStringLiterals);
19798   CHECK_PARSE_BOOL(CompactNamespaces);
19799   CHECK_PARSE_BOOL(DeriveLineEnding);
19800   CHECK_PARSE_BOOL(DerivePointerAlignment);
19801   CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding");
19802   CHECK_PARSE_BOOL(DisableFormat);
19803   CHECK_PARSE_BOOL(IndentAccessModifiers);
19804   CHECK_PARSE_BOOL(IndentCaseLabels);
19805   CHECK_PARSE_BOOL(IndentCaseBlocks);
19806   CHECK_PARSE_BOOL(IndentGotoLabels);
19807   CHECK_PARSE_BOOL_FIELD(IndentRequiresClause, "IndentRequires");
19808   CHECK_PARSE_BOOL(IndentRequiresClause);
19809   CHECK_PARSE_BOOL(IndentWrappedFunctionNames);
19810   CHECK_PARSE_BOOL(InsertBraces);
19811   CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks);
19812   CHECK_PARSE_BOOL(ObjCSpaceAfterProperty);
19813   CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
19814   CHECK_PARSE_BOOL(Cpp11BracedListStyle);
19815   CHECK_PARSE_BOOL(ReflowComments);
19816   CHECK_PARSE_BOOL(RemoveBracesLLVM);
19817   CHECK_PARSE_BOOL(SortUsingDeclarations);
19818   CHECK_PARSE_BOOL(SpacesInParentheses);
19819   CHECK_PARSE_BOOL(SpacesInSquareBrackets);
19820   CHECK_PARSE_BOOL(SpacesInConditionalStatement);
19821   CHECK_PARSE_BOOL(SpaceInEmptyBlock);
19822   CHECK_PARSE_BOOL(SpaceInEmptyParentheses);
19823   CHECK_PARSE_BOOL(SpacesInContainerLiterals);
19824   CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses);
19825   CHECK_PARSE_BOOL(SpaceAfterCStyleCast);
19826   CHECK_PARSE_BOOL(SpaceAfterTemplateKeyword);
19827   CHECK_PARSE_BOOL(SpaceAfterLogicalNot);
19828   CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators);
19829   CHECK_PARSE_BOOL(SpaceBeforeCaseColon);
19830   CHECK_PARSE_BOOL(SpaceBeforeCpp11BracedList);
19831   CHECK_PARSE_BOOL(SpaceBeforeCtorInitializerColon);
19832   CHECK_PARSE_BOOL(SpaceBeforeInheritanceColon);
19833   CHECK_PARSE_BOOL(SpaceBeforeRangeBasedForLoopColon);
19834   CHECK_PARSE_BOOL(SpaceBeforeSquareBrackets);
19835   CHECK_PARSE_BOOL(UseCRLF);
19836 
19837   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterCaseLabel);
19838   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterClass);
19839   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterEnum);
19840   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterFunction);
19841   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterNamespace);
19842   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterObjCDeclaration);
19843   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterStruct);
19844   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterUnion);
19845   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterExternBlock);
19846   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeCatch);
19847   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeElse);
19848   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeLambdaBody);
19849   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeWhile);
19850   CHECK_PARSE_NESTED_BOOL(BraceWrapping, IndentBraces);
19851   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyFunction);
19852   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyRecord);
19853   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyNamespace);
19854   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterControlStatements);
19855   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterForeachMacros);
19856   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions,
19857                           AfterFunctionDeclarationName);
19858   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions,
19859                           AfterFunctionDefinitionName);
19860   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterIfMacros);
19861   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, AfterOverloadedOperator);
19862   CHECK_PARSE_NESTED_BOOL(SpaceBeforeParensOptions, BeforeNonEmptyParentheses);
19863 }
19864 
19865 #undef CHECK_PARSE_BOOL
19866 
19867 TEST_F(FormatTest, ParsesConfiguration) {
19868   FormatStyle Style = {};
19869   Style.Language = FormatStyle::LK_Cpp;
19870   CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234);
19871   CHECK_PARSE("ConstructorInitializerIndentWidth: 1234",
19872               ConstructorInitializerIndentWidth, 1234u);
19873   CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u);
19874   CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u);
19875   CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u);
19876   CHECK_PARSE("PenaltyBreakAssignment: 1234", PenaltyBreakAssignment, 1234u);
19877   CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234",
19878               PenaltyBreakBeforeFirstCallParameter, 1234u);
19879   CHECK_PARSE("PenaltyBreakTemplateDeclaration: 1234",
19880               PenaltyBreakTemplateDeclaration, 1234u);
19881   CHECK_PARSE("PenaltyBreakOpenParenthesis: 1234", PenaltyBreakOpenParenthesis,
19882               1234u);
19883   CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u);
19884   CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234",
19885               PenaltyReturnTypeOnItsOwnLine, 1234u);
19886   CHECK_PARSE("SpacesBeforeTrailingComments: 1234",
19887               SpacesBeforeTrailingComments, 1234u);
19888   CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u);
19889   CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u);
19890   CHECK_PARSE("CommentPragmas: '// abc$'", CommentPragmas, "// abc$");
19891 
19892   Style.QualifierAlignment = FormatStyle::QAS_Right;
19893   CHECK_PARSE("QualifierAlignment: Leave", QualifierAlignment,
19894               FormatStyle::QAS_Leave);
19895   CHECK_PARSE("QualifierAlignment: Right", QualifierAlignment,
19896               FormatStyle::QAS_Right);
19897   CHECK_PARSE("QualifierAlignment: Left", QualifierAlignment,
19898               FormatStyle::QAS_Left);
19899   CHECK_PARSE("QualifierAlignment: Custom", QualifierAlignment,
19900               FormatStyle::QAS_Custom);
19901 
19902   Style.QualifierOrder.clear();
19903   CHECK_PARSE("QualifierOrder: [ const, volatile, type ]", QualifierOrder,
19904               std::vector<std::string>({"const", "volatile", "type"}));
19905   Style.QualifierOrder.clear();
19906   CHECK_PARSE("QualifierOrder: [const, type]", QualifierOrder,
19907               std::vector<std::string>({"const", "type"}));
19908   Style.QualifierOrder.clear();
19909   CHECK_PARSE("QualifierOrder: [volatile, type]", QualifierOrder,
19910               std::vector<std::string>({"volatile", "type"}));
19911 
19912 #define CHECK_ALIGN_CONSECUTIVE(FIELD)                                         \
19913   do {                                                                         \
19914     Style.FIELD.Enabled = true;                                                \
19915     CHECK_PARSE(#FIELD ": None", FIELD,                                        \
19916                 FormatStyle::AlignConsecutiveStyle(                            \
19917                     {/*Enabled=*/false, /*AcrossEmptyLines=*/false,            \
19918                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
19919                      /*PadOperators=*/true}));                                 \
19920     CHECK_PARSE(#FIELD ": Consecutive", FIELD,                                 \
19921                 FormatStyle::AlignConsecutiveStyle(                            \
19922                     {/*Enabled=*/true, /*AcrossEmptyLines=*/false,             \
19923                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
19924                      /*PadOperators=*/true}));                                 \
19925     CHECK_PARSE(#FIELD ": AcrossEmptyLines", FIELD,                            \
19926                 FormatStyle::AlignConsecutiveStyle(                            \
19927                     {/*Enabled=*/true, /*AcrossEmptyLines=*/true,              \
19928                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
19929                      /*PadOperators=*/true}));                                 \
19930     CHECK_PARSE(#FIELD ": AcrossEmptyLinesAndComments", FIELD,                 \
19931                 FormatStyle::AlignConsecutiveStyle(                            \
19932                     {/*Enabled=*/true, /*AcrossEmptyLines=*/true,              \
19933                      /*AcrossComments=*/true, /*AlignCompound=*/false,         \
19934                      /*PadOperators=*/true}));                                 \
19935     /* For backwards compability, false / true should still parse */           \
19936     CHECK_PARSE(#FIELD ": false", FIELD,                                       \
19937                 FormatStyle::AlignConsecutiveStyle(                            \
19938                     {/*Enabled=*/false, /*AcrossEmptyLines=*/false,            \
19939                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
19940                      /*PadOperators=*/true}));                                 \
19941     CHECK_PARSE(#FIELD ": true", FIELD,                                        \
19942                 FormatStyle::AlignConsecutiveStyle(                            \
19943                     {/*Enabled=*/true, /*AcrossEmptyLines=*/false,             \
19944                      /*AcrossComments=*/false, /*AlignCompound=*/false,        \
19945                      /*PadOperators=*/true}));                                 \
19946                                                                                \
19947     CHECK_PARSE_NESTED_BOOL(FIELD, Enabled);                                   \
19948     CHECK_PARSE_NESTED_BOOL(FIELD, AcrossEmptyLines);                          \
19949     CHECK_PARSE_NESTED_BOOL(FIELD, AcrossComments);                            \
19950     CHECK_PARSE_NESTED_BOOL(FIELD, AlignCompound);                             \
19951     CHECK_PARSE_NESTED_BOOL(FIELD, PadOperators);                              \
19952   } while (false)
19953 
19954   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveAssignments);
19955   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveBitFields);
19956   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveMacros);
19957   CHECK_ALIGN_CONSECUTIVE(AlignConsecutiveDeclarations);
19958 
19959 #undef CHECK_ALIGN_CONSECUTIVE
19960 
19961   Style.PointerAlignment = FormatStyle::PAS_Middle;
19962   CHECK_PARSE("PointerAlignment: Left", PointerAlignment,
19963               FormatStyle::PAS_Left);
19964   CHECK_PARSE("PointerAlignment: Right", PointerAlignment,
19965               FormatStyle::PAS_Right);
19966   CHECK_PARSE("PointerAlignment: Middle", PointerAlignment,
19967               FormatStyle::PAS_Middle);
19968   Style.ReferenceAlignment = FormatStyle::RAS_Middle;
19969   CHECK_PARSE("ReferenceAlignment: Pointer", ReferenceAlignment,
19970               FormatStyle::RAS_Pointer);
19971   CHECK_PARSE("ReferenceAlignment: Left", ReferenceAlignment,
19972               FormatStyle::RAS_Left);
19973   CHECK_PARSE("ReferenceAlignment: Right", ReferenceAlignment,
19974               FormatStyle::RAS_Right);
19975   CHECK_PARSE("ReferenceAlignment: Middle", ReferenceAlignment,
19976               FormatStyle::RAS_Middle);
19977   // For backward compatibility:
19978   CHECK_PARSE("PointerBindsToType: Left", PointerAlignment,
19979               FormatStyle::PAS_Left);
19980   CHECK_PARSE("PointerBindsToType: Right", PointerAlignment,
19981               FormatStyle::PAS_Right);
19982   CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment,
19983               FormatStyle::PAS_Middle);
19984 
19985   Style.Standard = FormatStyle::LS_Auto;
19986   CHECK_PARSE("Standard: c++03", Standard, FormatStyle::LS_Cpp03);
19987   CHECK_PARSE("Standard: c++11", Standard, FormatStyle::LS_Cpp11);
19988   CHECK_PARSE("Standard: c++14", Standard, FormatStyle::LS_Cpp14);
19989   CHECK_PARSE("Standard: c++17", Standard, FormatStyle::LS_Cpp17);
19990   CHECK_PARSE("Standard: c++20", Standard, FormatStyle::LS_Cpp20);
19991   CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto);
19992   CHECK_PARSE("Standard: Latest", Standard, FormatStyle::LS_Latest);
19993   // Legacy aliases:
19994   CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03);
19995   CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Latest);
19996   CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03);
19997   CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11);
19998 
19999   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
20000   CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment",
20001               BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment);
20002   CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators,
20003               FormatStyle::BOS_None);
20004   CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators,
20005               FormatStyle::BOS_All);
20006   // For backward compatibility:
20007   CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators,
20008               FormatStyle::BOS_None);
20009   CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators,
20010               FormatStyle::BOS_All);
20011 
20012   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
20013   CHECK_PARSE("BreakConstructorInitializers: BeforeComma",
20014               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
20015   CHECK_PARSE("BreakConstructorInitializers: AfterColon",
20016               BreakConstructorInitializers, FormatStyle::BCIS_AfterColon);
20017   CHECK_PARSE("BreakConstructorInitializers: BeforeColon",
20018               BreakConstructorInitializers, FormatStyle::BCIS_BeforeColon);
20019   // For backward compatibility:
20020   CHECK_PARSE("BreakConstructorInitializersBeforeComma: true",
20021               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
20022 
20023   Style.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
20024   CHECK_PARSE("BreakInheritanceList: AfterComma", BreakInheritanceList,
20025               FormatStyle::BILS_AfterComma);
20026   CHECK_PARSE("BreakInheritanceList: BeforeComma", BreakInheritanceList,
20027               FormatStyle::BILS_BeforeComma);
20028   CHECK_PARSE("BreakInheritanceList: AfterColon", BreakInheritanceList,
20029               FormatStyle::BILS_AfterColon);
20030   CHECK_PARSE("BreakInheritanceList: BeforeColon", BreakInheritanceList,
20031               FormatStyle::BILS_BeforeColon);
20032   // For backward compatibility:
20033   CHECK_PARSE("BreakBeforeInheritanceComma: true", BreakInheritanceList,
20034               FormatStyle::BILS_BeforeComma);
20035 
20036   Style.PackConstructorInitializers = FormatStyle::PCIS_BinPack;
20037   CHECK_PARSE("PackConstructorInitializers: Never", PackConstructorInitializers,
20038               FormatStyle::PCIS_Never);
20039   CHECK_PARSE("PackConstructorInitializers: BinPack",
20040               PackConstructorInitializers, FormatStyle::PCIS_BinPack);
20041   CHECK_PARSE("PackConstructorInitializers: CurrentLine",
20042               PackConstructorInitializers, FormatStyle::PCIS_CurrentLine);
20043   CHECK_PARSE("PackConstructorInitializers: NextLine",
20044               PackConstructorInitializers, FormatStyle::PCIS_NextLine);
20045   // For backward compatibility:
20046   CHECK_PARSE("BasedOnStyle: Google\n"
20047               "ConstructorInitializerAllOnOneLineOrOnePerLine: true\n"
20048               "AllowAllConstructorInitializersOnNextLine: false",
20049               PackConstructorInitializers, FormatStyle::PCIS_CurrentLine);
20050   Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
20051   CHECK_PARSE("BasedOnStyle: Google\n"
20052               "ConstructorInitializerAllOnOneLineOrOnePerLine: false",
20053               PackConstructorInitializers, FormatStyle::PCIS_BinPack);
20054   CHECK_PARSE("ConstructorInitializerAllOnOneLineOrOnePerLine: true\n"
20055               "AllowAllConstructorInitializersOnNextLine: true",
20056               PackConstructorInitializers, FormatStyle::PCIS_NextLine);
20057   Style.PackConstructorInitializers = FormatStyle::PCIS_BinPack;
20058   CHECK_PARSE("ConstructorInitializerAllOnOneLineOrOnePerLine: true\n"
20059               "AllowAllConstructorInitializersOnNextLine: false",
20060               PackConstructorInitializers, FormatStyle::PCIS_CurrentLine);
20061 
20062   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_LogicalBlock;
20063   CHECK_PARSE("EmptyLineBeforeAccessModifier: Never",
20064               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Never);
20065   CHECK_PARSE("EmptyLineBeforeAccessModifier: Leave",
20066               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Leave);
20067   CHECK_PARSE("EmptyLineBeforeAccessModifier: LogicalBlock",
20068               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_LogicalBlock);
20069   CHECK_PARSE("EmptyLineBeforeAccessModifier: Always",
20070               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Always);
20071 
20072   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
20073   CHECK_PARSE("AlignAfterOpenBracket: Align", AlignAfterOpenBracket,
20074               FormatStyle::BAS_Align);
20075   CHECK_PARSE("AlignAfterOpenBracket: DontAlign", AlignAfterOpenBracket,
20076               FormatStyle::BAS_DontAlign);
20077   CHECK_PARSE("AlignAfterOpenBracket: AlwaysBreak", AlignAfterOpenBracket,
20078               FormatStyle::BAS_AlwaysBreak);
20079   CHECK_PARSE("AlignAfterOpenBracket: BlockIndent", AlignAfterOpenBracket,
20080               FormatStyle::BAS_BlockIndent);
20081   // For backward compatibility:
20082   CHECK_PARSE("AlignAfterOpenBracket: false", AlignAfterOpenBracket,
20083               FormatStyle::BAS_DontAlign);
20084   CHECK_PARSE("AlignAfterOpenBracket: true", AlignAfterOpenBracket,
20085               FormatStyle::BAS_Align);
20086 
20087   Style.AlignEscapedNewlines = FormatStyle::ENAS_Left;
20088   CHECK_PARSE("AlignEscapedNewlines: DontAlign", AlignEscapedNewlines,
20089               FormatStyle::ENAS_DontAlign);
20090   CHECK_PARSE("AlignEscapedNewlines: Left", AlignEscapedNewlines,
20091               FormatStyle::ENAS_Left);
20092   CHECK_PARSE("AlignEscapedNewlines: Right", AlignEscapedNewlines,
20093               FormatStyle::ENAS_Right);
20094   // For backward compatibility:
20095   CHECK_PARSE("AlignEscapedNewlinesLeft: true", AlignEscapedNewlines,
20096               FormatStyle::ENAS_Left);
20097   CHECK_PARSE("AlignEscapedNewlinesLeft: false", AlignEscapedNewlines,
20098               FormatStyle::ENAS_Right);
20099 
20100   Style.AlignOperands = FormatStyle::OAS_Align;
20101   CHECK_PARSE("AlignOperands: DontAlign", AlignOperands,
20102               FormatStyle::OAS_DontAlign);
20103   CHECK_PARSE("AlignOperands: Align", AlignOperands, FormatStyle::OAS_Align);
20104   CHECK_PARSE("AlignOperands: AlignAfterOperator", AlignOperands,
20105               FormatStyle::OAS_AlignAfterOperator);
20106   // For backward compatibility:
20107   CHECK_PARSE("AlignOperands: false", AlignOperands,
20108               FormatStyle::OAS_DontAlign);
20109   CHECK_PARSE("AlignOperands: true", AlignOperands, FormatStyle::OAS_Align);
20110 
20111   Style.UseTab = FormatStyle::UT_ForIndentation;
20112   CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never);
20113   CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation);
20114   CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always);
20115   CHECK_PARSE("UseTab: ForContinuationAndIndentation", UseTab,
20116               FormatStyle::UT_ForContinuationAndIndentation);
20117   CHECK_PARSE("UseTab: AlignWithSpaces", UseTab,
20118               FormatStyle::UT_AlignWithSpaces);
20119   // For backward compatibility:
20120   CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never);
20121   CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always);
20122 
20123   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
20124   CHECK_PARSE("AllowShortBlocksOnASingleLine: Never",
20125               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
20126   CHECK_PARSE("AllowShortBlocksOnASingleLine: Empty",
20127               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Empty);
20128   CHECK_PARSE("AllowShortBlocksOnASingleLine: Always",
20129               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
20130   // For backward compatibility:
20131   CHECK_PARSE("AllowShortBlocksOnASingleLine: false",
20132               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
20133   CHECK_PARSE("AllowShortBlocksOnASingleLine: true",
20134               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
20135 
20136   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
20137   CHECK_PARSE("AllowShortFunctionsOnASingleLine: None",
20138               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
20139   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline",
20140               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline);
20141   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty",
20142               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty);
20143   CHECK_PARSE("AllowShortFunctionsOnASingleLine: All",
20144               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
20145   // For backward compatibility:
20146   CHECK_PARSE("AllowShortFunctionsOnASingleLine: false",
20147               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
20148   CHECK_PARSE("AllowShortFunctionsOnASingleLine: true",
20149               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
20150 
20151   Style.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Both;
20152   CHECK_PARSE("SpaceAroundPointerQualifiers: Default",
20153               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Default);
20154   CHECK_PARSE("SpaceAroundPointerQualifiers: Before",
20155               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Before);
20156   CHECK_PARSE("SpaceAroundPointerQualifiers: After",
20157               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_After);
20158   CHECK_PARSE("SpaceAroundPointerQualifiers: Both",
20159               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Both);
20160 
20161   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
20162   CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens,
20163               FormatStyle::SBPO_Never);
20164   CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens,
20165               FormatStyle::SBPO_Always);
20166   CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens,
20167               FormatStyle::SBPO_ControlStatements);
20168   CHECK_PARSE("SpaceBeforeParens: ControlStatementsExceptControlMacros",
20169               SpaceBeforeParens,
20170               FormatStyle::SBPO_ControlStatementsExceptControlMacros);
20171   CHECK_PARSE("SpaceBeforeParens: NonEmptyParentheses", SpaceBeforeParens,
20172               FormatStyle::SBPO_NonEmptyParentheses);
20173   CHECK_PARSE("SpaceBeforeParens: Custom", SpaceBeforeParens,
20174               FormatStyle::SBPO_Custom);
20175   // For backward compatibility:
20176   CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens,
20177               FormatStyle::SBPO_Never);
20178   CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens,
20179               FormatStyle::SBPO_ControlStatements);
20180   CHECK_PARSE("SpaceBeforeParens: ControlStatementsExceptForEachMacros",
20181               SpaceBeforeParens,
20182               FormatStyle::SBPO_ControlStatementsExceptControlMacros);
20183 
20184   Style.ColumnLimit = 123;
20185   FormatStyle BaseStyle = getLLVMStyle();
20186   CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
20187   CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u);
20188 
20189   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
20190   CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces,
20191               FormatStyle::BS_Attach);
20192   CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces,
20193               FormatStyle::BS_Linux);
20194   CHECK_PARSE("BreakBeforeBraces: Mozilla", BreakBeforeBraces,
20195               FormatStyle::BS_Mozilla);
20196   CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces,
20197               FormatStyle::BS_Stroustrup);
20198   CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces,
20199               FormatStyle::BS_Allman);
20200   CHECK_PARSE("BreakBeforeBraces: Whitesmiths", BreakBeforeBraces,
20201               FormatStyle::BS_Whitesmiths);
20202   CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU);
20203   CHECK_PARSE("BreakBeforeBraces: WebKit", BreakBeforeBraces,
20204               FormatStyle::BS_WebKit);
20205   CHECK_PARSE("BreakBeforeBraces: Custom", BreakBeforeBraces,
20206               FormatStyle::BS_Custom);
20207 
20208   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Never;
20209   CHECK_PARSE("BraceWrapping:\n"
20210               "  AfterControlStatement: MultiLine",
20211               BraceWrapping.AfterControlStatement,
20212               FormatStyle::BWACS_MultiLine);
20213   CHECK_PARSE("BraceWrapping:\n"
20214               "  AfterControlStatement: Always",
20215               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
20216   CHECK_PARSE("BraceWrapping:\n"
20217               "  AfterControlStatement: Never",
20218               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
20219   // For backward compatibility:
20220   CHECK_PARSE("BraceWrapping:\n"
20221               "  AfterControlStatement: true",
20222               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
20223   CHECK_PARSE("BraceWrapping:\n"
20224               "  AfterControlStatement: false",
20225               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
20226 
20227   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
20228   CHECK_PARSE("AlwaysBreakAfterReturnType: None", AlwaysBreakAfterReturnType,
20229               FormatStyle::RTBS_None);
20230   CHECK_PARSE("AlwaysBreakAfterReturnType: All", AlwaysBreakAfterReturnType,
20231               FormatStyle::RTBS_All);
20232   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevel",
20233               AlwaysBreakAfterReturnType, FormatStyle::RTBS_TopLevel);
20234   CHECK_PARSE("AlwaysBreakAfterReturnType: AllDefinitions",
20235               AlwaysBreakAfterReturnType, FormatStyle::RTBS_AllDefinitions);
20236   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevelDefinitions",
20237               AlwaysBreakAfterReturnType,
20238               FormatStyle::RTBS_TopLevelDefinitions);
20239 
20240   Style.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
20241   CHECK_PARSE("AlwaysBreakTemplateDeclarations: No",
20242               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_No);
20243   CHECK_PARSE("AlwaysBreakTemplateDeclarations: MultiLine",
20244               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
20245   CHECK_PARSE("AlwaysBreakTemplateDeclarations: Yes",
20246               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
20247   CHECK_PARSE("AlwaysBreakTemplateDeclarations: false",
20248               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
20249   CHECK_PARSE("AlwaysBreakTemplateDeclarations: true",
20250               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
20251 
20252   Style.AlwaysBreakAfterDefinitionReturnType = FormatStyle::DRTBS_All;
20253   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: None",
20254               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_None);
20255   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: All",
20256               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_All);
20257   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: TopLevel",
20258               AlwaysBreakAfterDefinitionReturnType,
20259               FormatStyle::DRTBS_TopLevel);
20260 
20261   Style.NamespaceIndentation = FormatStyle::NI_All;
20262   CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation,
20263               FormatStyle::NI_None);
20264   CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation,
20265               FormatStyle::NI_Inner);
20266   CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation,
20267               FormatStyle::NI_All);
20268 
20269   Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_OnlyFirstIf;
20270   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Never",
20271               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
20272   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: WithoutElse",
20273               AllowShortIfStatementsOnASingleLine,
20274               FormatStyle::SIS_WithoutElse);
20275   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: OnlyFirstIf",
20276               AllowShortIfStatementsOnASingleLine,
20277               FormatStyle::SIS_OnlyFirstIf);
20278   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: AllIfsAndElse",
20279               AllowShortIfStatementsOnASingleLine,
20280               FormatStyle::SIS_AllIfsAndElse);
20281   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Always",
20282               AllowShortIfStatementsOnASingleLine,
20283               FormatStyle::SIS_OnlyFirstIf);
20284   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: false",
20285               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
20286   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: true",
20287               AllowShortIfStatementsOnASingleLine,
20288               FormatStyle::SIS_WithoutElse);
20289 
20290   Style.IndentExternBlock = FormatStyle::IEBS_NoIndent;
20291   CHECK_PARSE("IndentExternBlock: AfterExternBlock", IndentExternBlock,
20292               FormatStyle::IEBS_AfterExternBlock);
20293   CHECK_PARSE("IndentExternBlock: Indent", IndentExternBlock,
20294               FormatStyle::IEBS_Indent);
20295   CHECK_PARSE("IndentExternBlock: NoIndent", IndentExternBlock,
20296               FormatStyle::IEBS_NoIndent);
20297   CHECK_PARSE("IndentExternBlock: true", IndentExternBlock,
20298               FormatStyle::IEBS_Indent);
20299   CHECK_PARSE("IndentExternBlock: false", IndentExternBlock,
20300               FormatStyle::IEBS_NoIndent);
20301 
20302   Style.BitFieldColonSpacing = FormatStyle::BFCS_None;
20303   CHECK_PARSE("BitFieldColonSpacing: Both", BitFieldColonSpacing,
20304               FormatStyle::BFCS_Both);
20305   CHECK_PARSE("BitFieldColonSpacing: None", BitFieldColonSpacing,
20306               FormatStyle::BFCS_None);
20307   CHECK_PARSE("BitFieldColonSpacing: Before", BitFieldColonSpacing,
20308               FormatStyle::BFCS_Before);
20309   CHECK_PARSE("BitFieldColonSpacing: After", BitFieldColonSpacing,
20310               FormatStyle::BFCS_After);
20311 
20312   Style.SortJavaStaticImport = FormatStyle::SJSIO_Before;
20313   CHECK_PARSE("SortJavaStaticImport: After", SortJavaStaticImport,
20314               FormatStyle::SJSIO_After);
20315   CHECK_PARSE("SortJavaStaticImport: Before", SortJavaStaticImport,
20316               FormatStyle::SJSIO_Before);
20317 
20318   // FIXME: This is required because parsing a configuration simply overwrites
20319   // the first N elements of the list instead of resetting it.
20320   Style.ForEachMacros.clear();
20321   std::vector<std::string> BoostForeach;
20322   BoostForeach.push_back("BOOST_FOREACH");
20323   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach);
20324   std::vector<std::string> BoostAndQForeach;
20325   BoostAndQForeach.push_back("BOOST_FOREACH");
20326   BoostAndQForeach.push_back("Q_FOREACH");
20327   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros,
20328               BoostAndQForeach);
20329 
20330   Style.IfMacros.clear();
20331   std::vector<std::string> CustomIfs;
20332   CustomIfs.push_back("MYIF");
20333   CHECK_PARSE("IfMacros: [MYIF]", IfMacros, CustomIfs);
20334 
20335   Style.AttributeMacros.clear();
20336   CHECK_PARSE("BasedOnStyle: LLVM", AttributeMacros,
20337               std::vector<std::string>{"__capability"});
20338   CHECK_PARSE("AttributeMacros: [attr1, attr2]", AttributeMacros,
20339               std::vector<std::string>({"attr1", "attr2"}));
20340 
20341   Style.StatementAttributeLikeMacros.clear();
20342   CHECK_PARSE("StatementAttributeLikeMacros: [emit,Q_EMIT]",
20343               StatementAttributeLikeMacros,
20344               std::vector<std::string>({"emit", "Q_EMIT"}));
20345 
20346   Style.StatementMacros.clear();
20347   CHECK_PARSE("StatementMacros: [QUNUSED]", StatementMacros,
20348               std::vector<std::string>{"QUNUSED"});
20349   CHECK_PARSE("StatementMacros: [QUNUSED, QT_REQUIRE_VERSION]", StatementMacros,
20350               std::vector<std::string>({"QUNUSED", "QT_REQUIRE_VERSION"}));
20351 
20352   Style.NamespaceMacros.clear();
20353   CHECK_PARSE("NamespaceMacros: [TESTSUITE]", NamespaceMacros,
20354               std::vector<std::string>{"TESTSUITE"});
20355   CHECK_PARSE("NamespaceMacros: [TESTSUITE, SUITE]", NamespaceMacros,
20356               std::vector<std::string>({"TESTSUITE", "SUITE"}));
20357 
20358   Style.WhitespaceSensitiveMacros.clear();
20359   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE]",
20360               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
20361   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE, ASSERT]",
20362               WhitespaceSensitiveMacros,
20363               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
20364   Style.WhitespaceSensitiveMacros.clear();
20365   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE']",
20366               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
20367   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE', 'ASSERT']",
20368               WhitespaceSensitiveMacros,
20369               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
20370 
20371   Style.IncludeStyle.IncludeCategories.clear();
20372   std::vector<tooling::IncludeStyle::IncludeCategory> ExpectedCategories = {
20373       {"abc/.*", 2, 0, false}, {".*", 1, 0, true}};
20374   CHECK_PARSE("IncludeCategories:\n"
20375               "  - Regex: abc/.*\n"
20376               "    Priority: 2\n"
20377               "  - Regex: .*\n"
20378               "    Priority: 1\n"
20379               "    CaseSensitive: true\n",
20380               IncludeStyle.IncludeCategories, ExpectedCategories);
20381   CHECK_PARSE("IncludeIsMainRegex: 'abc$'", IncludeStyle.IncludeIsMainRegex,
20382               "abc$");
20383   CHECK_PARSE("IncludeIsMainSourceRegex: 'abc$'",
20384               IncludeStyle.IncludeIsMainSourceRegex, "abc$");
20385 
20386   Style.SortIncludes = FormatStyle::SI_Never;
20387   CHECK_PARSE("SortIncludes: true", SortIncludes,
20388               FormatStyle::SI_CaseSensitive);
20389   CHECK_PARSE("SortIncludes: false", SortIncludes, FormatStyle::SI_Never);
20390   CHECK_PARSE("SortIncludes: CaseInsensitive", SortIncludes,
20391               FormatStyle::SI_CaseInsensitive);
20392   CHECK_PARSE("SortIncludes: CaseSensitive", SortIncludes,
20393               FormatStyle::SI_CaseSensitive);
20394   CHECK_PARSE("SortIncludes: Never", SortIncludes, FormatStyle::SI_Never);
20395 
20396   Style.RawStringFormats.clear();
20397   std::vector<FormatStyle::RawStringFormat> ExpectedRawStringFormats = {
20398       {
20399           FormatStyle::LK_TextProto,
20400           {"pb", "proto"},
20401           {"PARSE_TEXT_PROTO"},
20402           /*CanonicalDelimiter=*/"",
20403           "llvm",
20404       },
20405       {
20406           FormatStyle::LK_Cpp,
20407           {"cc", "cpp"},
20408           {"C_CODEBLOCK", "CPPEVAL"},
20409           /*CanonicalDelimiter=*/"cc",
20410           /*BasedOnStyle=*/"",
20411       },
20412   };
20413 
20414   CHECK_PARSE("RawStringFormats:\n"
20415               "  - Language: TextProto\n"
20416               "    Delimiters:\n"
20417               "      - 'pb'\n"
20418               "      - 'proto'\n"
20419               "    EnclosingFunctions:\n"
20420               "      - 'PARSE_TEXT_PROTO'\n"
20421               "    BasedOnStyle: llvm\n"
20422               "  - Language: Cpp\n"
20423               "    Delimiters:\n"
20424               "      - 'cc'\n"
20425               "      - 'cpp'\n"
20426               "    EnclosingFunctions:\n"
20427               "      - 'C_CODEBLOCK'\n"
20428               "      - 'CPPEVAL'\n"
20429               "    CanonicalDelimiter: 'cc'",
20430               RawStringFormats, ExpectedRawStringFormats);
20431 
20432   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
20433               "  Minimum: 0\n"
20434               "  Maximum: 0",
20435               SpacesInLineCommentPrefix.Minimum, 0u);
20436   EXPECT_EQ(Style.SpacesInLineCommentPrefix.Maximum, 0u);
20437   Style.SpacesInLineCommentPrefix.Minimum = 1;
20438   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
20439               "  Minimum: 2",
20440               SpacesInLineCommentPrefix.Minimum, 0u);
20441   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
20442               "  Maximum: -1",
20443               SpacesInLineCommentPrefix.Maximum, -1u);
20444   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
20445               "  Minimum: 2",
20446               SpacesInLineCommentPrefix.Minimum, 2u);
20447   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
20448               "  Maximum: 1",
20449               SpacesInLineCommentPrefix.Maximum, 1u);
20450   EXPECT_EQ(Style.SpacesInLineCommentPrefix.Minimum, 1u);
20451 
20452   Style.SpacesInAngles = FormatStyle::SIAS_Always;
20453   CHECK_PARSE("SpacesInAngles: Never", SpacesInAngles, FormatStyle::SIAS_Never);
20454   CHECK_PARSE("SpacesInAngles: Always", SpacesInAngles,
20455               FormatStyle::SIAS_Always);
20456   CHECK_PARSE("SpacesInAngles: Leave", SpacesInAngles, FormatStyle::SIAS_Leave);
20457   // For backward compatibility:
20458   CHECK_PARSE("SpacesInAngles: false", SpacesInAngles, FormatStyle::SIAS_Never);
20459   CHECK_PARSE("SpacesInAngles: true", SpacesInAngles, FormatStyle::SIAS_Always);
20460 
20461   CHECK_PARSE("RequiresClausePosition: WithPreceding", RequiresClausePosition,
20462               FormatStyle::RCPS_WithPreceding);
20463   CHECK_PARSE("RequiresClausePosition: WithFollowing", RequiresClausePosition,
20464               FormatStyle::RCPS_WithFollowing);
20465   CHECK_PARSE("RequiresClausePosition: SingleLine", RequiresClausePosition,
20466               FormatStyle::RCPS_SingleLine);
20467   CHECK_PARSE("RequiresClausePosition: OwnLine", RequiresClausePosition,
20468               FormatStyle::RCPS_OwnLine);
20469 
20470   CHECK_PARSE("BreakBeforeConceptDeclarations: Never",
20471               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Never);
20472   CHECK_PARSE("BreakBeforeConceptDeclarations: Always",
20473               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Always);
20474   CHECK_PARSE("BreakBeforeConceptDeclarations: Allowed",
20475               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Allowed);
20476   // For backward compatibility:
20477   CHECK_PARSE("BreakBeforeConceptDeclarations: true",
20478               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Always);
20479   CHECK_PARSE("BreakBeforeConceptDeclarations: false",
20480               BreakBeforeConceptDeclarations, FormatStyle::BBCDS_Allowed);
20481 }
20482 
20483 TEST_F(FormatTest, ParsesConfigurationWithLanguages) {
20484   FormatStyle Style = {};
20485   Style.Language = FormatStyle::LK_Cpp;
20486   CHECK_PARSE("Language: Cpp\n"
20487               "IndentWidth: 12",
20488               IndentWidth, 12u);
20489   EXPECT_EQ(parseConfiguration("Language: JavaScript\n"
20490                                "IndentWidth: 34",
20491                                &Style),
20492             ParseError::Unsuitable);
20493   FormatStyle BinPackedTCS = {};
20494   BinPackedTCS.Language = FormatStyle::LK_JavaScript;
20495   EXPECT_EQ(parseConfiguration("BinPackArguments: true\n"
20496                                "InsertTrailingCommas: Wrapped",
20497                                &BinPackedTCS),
20498             ParseError::BinPackTrailingCommaConflict);
20499   EXPECT_EQ(12u, Style.IndentWidth);
20500   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
20501   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
20502 
20503   Style.Language = FormatStyle::LK_JavaScript;
20504   CHECK_PARSE("Language: JavaScript\n"
20505               "IndentWidth: 12",
20506               IndentWidth, 12u);
20507   CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u);
20508   EXPECT_EQ(parseConfiguration("Language: Cpp\n"
20509                                "IndentWidth: 34",
20510                                &Style),
20511             ParseError::Unsuitable);
20512   EXPECT_EQ(23u, Style.IndentWidth);
20513   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
20514   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
20515 
20516   CHECK_PARSE("BasedOnStyle: LLVM\n"
20517               "IndentWidth: 67",
20518               IndentWidth, 67u);
20519 
20520   CHECK_PARSE("---\n"
20521               "Language: JavaScript\n"
20522               "IndentWidth: 12\n"
20523               "---\n"
20524               "Language: Cpp\n"
20525               "IndentWidth: 34\n"
20526               "...\n",
20527               IndentWidth, 12u);
20528 
20529   Style.Language = FormatStyle::LK_Cpp;
20530   CHECK_PARSE("---\n"
20531               "Language: JavaScript\n"
20532               "IndentWidth: 12\n"
20533               "---\n"
20534               "Language: Cpp\n"
20535               "IndentWidth: 34\n"
20536               "...\n",
20537               IndentWidth, 34u);
20538   CHECK_PARSE("---\n"
20539               "IndentWidth: 78\n"
20540               "---\n"
20541               "Language: JavaScript\n"
20542               "IndentWidth: 56\n"
20543               "...\n",
20544               IndentWidth, 78u);
20545 
20546   Style.ColumnLimit = 123;
20547   Style.IndentWidth = 234;
20548   Style.BreakBeforeBraces = FormatStyle::BS_Linux;
20549   Style.TabWidth = 345;
20550   EXPECT_FALSE(parseConfiguration("---\n"
20551                                   "IndentWidth: 456\n"
20552                                   "BreakBeforeBraces: Allman\n"
20553                                   "---\n"
20554                                   "Language: JavaScript\n"
20555                                   "IndentWidth: 111\n"
20556                                   "TabWidth: 111\n"
20557                                   "---\n"
20558                                   "Language: Cpp\n"
20559                                   "BreakBeforeBraces: Stroustrup\n"
20560                                   "TabWidth: 789\n"
20561                                   "...\n",
20562                                   &Style));
20563   EXPECT_EQ(123u, Style.ColumnLimit);
20564   EXPECT_EQ(456u, Style.IndentWidth);
20565   EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces);
20566   EXPECT_EQ(789u, Style.TabWidth);
20567 
20568   EXPECT_EQ(parseConfiguration("---\n"
20569                                "Language: JavaScript\n"
20570                                "IndentWidth: 56\n"
20571                                "---\n"
20572                                "IndentWidth: 78\n"
20573                                "...\n",
20574                                &Style),
20575             ParseError::Error);
20576   EXPECT_EQ(parseConfiguration("---\n"
20577                                "Language: JavaScript\n"
20578                                "IndentWidth: 56\n"
20579                                "---\n"
20580                                "Language: JavaScript\n"
20581                                "IndentWidth: 78\n"
20582                                "...\n",
20583                                &Style),
20584             ParseError::Error);
20585 
20586   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
20587 }
20588 
20589 TEST_F(FormatTest, UsesLanguageForBasedOnStyle) {
20590   FormatStyle Style = {};
20591   Style.Language = FormatStyle::LK_JavaScript;
20592   Style.BreakBeforeTernaryOperators = true;
20593   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value());
20594   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
20595 
20596   Style.BreakBeforeTernaryOperators = true;
20597   EXPECT_EQ(0, parseConfiguration("---\n"
20598                                   "BasedOnStyle: Google\n"
20599                                   "---\n"
20600                                   "Language: JavaScript\n"
20601                                   "IndentWidth: 76\n"
20602                                   "...\n",
20603                                   &Style)
20604                    .value());
20605   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
20606   EXPECT_EQ(76u, Style.IndentWidth);
20607   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
20608 }
20609 
20610 TEST_F(FormatTest, ConfigurationRoundTripTest) {
20611   FormatStyle Style = getLLVMStyle();
20612   std::string YAML = configurationAsText(Style);
20613   FormatStyle ParsedStyle = {};
20614   ParsedStyle.Language = FormatStyle::LK_Cpp;
20615   EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value());
20616   EXPECT_EQ(Style, ParsedStyle);
20617 }
20618 
20619 TEST_F(FormatTest, WorksFor8bitEncodings) {
20620   EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n"
20621             "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n"
20622             "\"\xe7\xe8\xec\xed\xfe\xfe \"\n"
20623             "\"\xef\xee\xf0\xf3...\"",
20624             format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 "
20625                    "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe "
20626                    "\xef\xee\xf0\xf3...\"",
20627                    getLLVMStyleWithColumns(12)));
20628 }
20629 
20630 TEST_F(FormatTest, HandlesUTF8BOM) {
20631   EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf"));
20632   EXPECT_EQ("\xef\xbb\xbf#include <iostream>",
20633             format("\xef\xbb\xbf#include <iostream>"));
20634   EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>",
20635             format("\xef\xbb\xbf\n#include <iostream>"));
20636 }
20637 
20638 // FIXME: Encode Cyrillic and CJK characters below to appease MS compilers.
20639 #if !defined(_MSC_VER)
20640 
20641 TEST_F(FormatTest, CountsUTF8CharactersProperly) {
20642   verifyFormat("\"Однажды в студёную зимнюю пору...\"",
20643                getLLVMStyleWithColumns(35));
20644   verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"",
20645                getLLVMStyleWithColumns(31));
20646   verifyFormat("// Однажды в студёную зимнюю пору...",
20647                getLLVMStyleWithColumns(36));
20648   verifyFormat("// 一 二 三 四 五 六 七 八 九 十", getLLVMStyleWithColumns(32));
20649   verifyFormat("/* Однажды в студёную зимнюю пору... */",
20650                getLLVMStyleWithColumns(39));
20651   verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */",
20652                getLLVMStyleWithColumns(35));
20653 }
20654 
20655 TEST_F(FormatTest, SplitsUTF8Strings) {
20656   // Non-printable characters' width is currently considered to be the length in
20657   // bytes in UTF8. The characters can be displayed in very different manner
20658   // (zero-width, single width with a substitution glyph, expanded to their code
20659   // (e.g. "<8d>"), so there's no single correct way to handle them.
20660   EXPECT_EQ("\"aaaaÄ\"\n"
20661             "\"\xc2\x8d\";",
20662             format("\"aaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
20663   EXPECT_EQ("\"aaaaaaaÄ\"\n"
20664             "\"\xc2\x8d\";",
20665             format("\"aaaaaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
20666   EXPECT_EQ("\"Однажды, в \"\n"
20667             "\"студёную \"\n"
20668             "\"зимнюю \"\n"
20669             "\"пору,\"",
20670             format("\"Однажды, в студёную зимнюю пору,\"",
20671                    getLLVMStyleWithColumns(13)));
20672   EXPECT_EQ(
20673       "\"一 二 三 \"\n"
20674       "\"四 五六 \"\n"
20675       "\"七 八 九 \"\n"
20676       "\"十\"",
20677       format("\"一 二 三 四 五六 七 八 九 十\"", getLLVMStyleWithColumns(11)));
20678   EXPECT_EQ("\"一\t\"\n"
20679             "\"二 \t\"\n"
20680             "\"三 四 \"\n"
20681             "\"五\t\"\n"
20682             "\"六 \t\"\n"
20683             "\"七 \"\n"
20684             "\"八九十\tqq\"",
20685             format("\"一\t二 \t三 四 五\t六 \t七 八九十\tqq\"",
20686                    getLLVMStyleWithColumns(11)));
20687 
20688   // UTF8 character in an escape sequence.
20689   EXPECT_EQ("\"aaaaaa\"\n"
20690             "\"\\\xC2\x8D\"",
20691             format("\"aaaaaa\\\xC2\x8D\"", getLLVMStyleWithColumns(10)));
20692 }
20693 
20694 TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) {
20695   EXPECT_EQ("const char *sssss =\n"
20696             "    \"一二三四五六七八\\\n"
20697             " 九 十\";",
20698             format("const char *sssss = \"一二三四五六七八\\\n"
20699                    " 九 十\";",
20700                    getLLVMStyleWithColumns(30)));
20701 }
20702 
20703 TEST_F(FormatTest, SplitsUTF8LineComments) {
20704   EXPECT_EQ("// aaaaÄ\xc2\x8d",
20705             format("// aaaaÄ\xc2\x8d", getLLVMStyleWithColumns(10)));
20706   EXPECT_EQ("// Я из лесу\n"
20707             "// вышел; был\n"
20708             "// сильный\n"
20709             "// мороз.",
20710             format("// Я из лесу вышел; был сильный мороз.",
20711                    getLLVMStyleWithColumns(13)));
20712   EXPECT_EQ("// 一二三\n"
20713             "// 四五六七\n"
20714             "// 八  九\n"
20715             "// 十",
20716             format("// 一二三 四五六七 八  九 十", getLLVMStyleWithColumns(9)));
20717 }
20718 
20719 TEST_F(FormatTest, SplitsUTF8BlockComments) {
20720   EXPECT_EQ("/* Гляжу,\n"
20721             " * поднимается\n"
20722             " * медленно в\n"
20723             " * гору\n"
20724             " * Лошадка,\n"
20725             " * везущая\n"
20726             " * хворосту\n"
20727             " * воз. */",
20728             format("/* Гляжу, поднимается медленно в гору\n"
20729                    " * Лошадка, везущая хворосту воз. */",
20730                    getLLVMStyleWithColumns(13)));
20731   EXPECT_EQ(
20732       "/* 一二三\n"
20733       " * 四五六七\n"
20734       " * 八  九\n"
20735       " * 十  */",
20736       format("/* 一二三 四五六七 八  九 十  */", getLLVMStyleWithColumns(9)));
20737   EXPECT_EQ("/* �������� ��������\n"
20738             " * ��������\n"
20739             " * ������-�� */",
20740             format("/* �������� �������� �������� ������-�� */", getLLVMStyleWithColumns(12)));
20741 }
20742 
20743 #endif // _MSC_VER
20744 
20745 TEST_F(FormatTest, ConstructorInitializerIndentWidth) {
20746   FormatStyle Style = getLLVMStyle();
20747 
20748   Style.ConstructorInitializerIndentWidth = 4;
20749   verifyFormat(
20750       "SomeClass::Constructor()\n"
20751       "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
20752       "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
20753       Style);
20754 
20755   Style.ConstructorInitializerIndentWidth = 2;
20756   verifyFormat(
20757       "SomeClass::Constructor()\n"
20758       "  : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
20759       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
20760       Style);
20761 
20762   Style.ConstructorInitializerIndentWidth = 0;
20763   verifyFormat(
20764       "SomeClass::Constructor()\n"
20765       ": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
20766       "  aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
20767       Style);
20768   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
20769   verifyFormat(
20770       "SomeLongTemplateVariableName<\n"
20771       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>",
20772       Style);
20773   verifyFormat("bool smaller = 1 < "
20774                "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
20775                "                       "
20776                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
20777                Style);
20778 
20779   Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
20780   verifyFormat("SomeClass::Constructor() :\n"
20781                "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa),\n"
20782                "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa) {}",
20783                Style);
20784 }
20785 
20786 TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) {
20787   FormatStyle Style = getLLVMStyle();
20788   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
20789   Style.ConstructorInitializerIndentWidth = 4;
20790   verifyFormat("SomeClass::Constructor()\n"
20791                "    : a(a)\n"
20792                "    , b(b)\n"
20793                "    , c(c) {}",
20794                Style);
20795   verifyFormat("SomeClass::Constructor()\n"
20796                "    : a(a) {}",
20797                Style);
20798 
20799   Style.ColumnLimit = 0;
20800   verifyFormat("SomeClass::Constructor()\n"
20801                "    : a(a) {}",
20802                Style);
20803   verifyFormat("SomeClass::Constructor() noexcept\n"
20804                "    : a(a) {}",
20805                Style);
20806   verifyFormat("SomeClass::Constructor()\n"
20807                "    : a(a)\n"
20808                "    , b(b)\n"
20809                "    , c(c) {}",
20810                Style);
20811   verifyFormat("SomeClass::Constructor()\n"
20812                "    : a(a) {\n"
20813                "  foo();\n"
20814                "  bar();\n"
20815                "}",
20816                Style);
20817 
20818   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
20819   verifyFormat("SomeClass::Constructor()\n"
20820                "    : a(a)\n"
20821                "    , b(b)\n"
20822                "    , c(c) {\n}",
20823                Style);
20824   verifyFormat("SomeClass::Constructor()\n"
20825                "    : a(a) {\n}",
20826                Style);
20827 
20828   Style.ColumnLimit = 80;
20829   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
20830   Style.ConstructorInitializerIndentWidth = 2;
20831   verifyFormat("SomeClass::Constructor()\n"
20832                "  : a(a)\n"
20833                "  , b(b)\n"
20834                "  , c(c) {}",
20835                Style);
20836 
20837   Style.ConstructorInitializerIndentWidth = 0;
20838   verifyFormat("SomeClass::Constructor()\n"
20839                ": a(a)\n"
20840                ", b(b)\n"
20841                ", c(c) {}",
20842                Style);
20843 
20844   Style.PackConstructorInitializers = FormatStyle::PCIS_NextLine;
20845   Style.ConstructorInitializerIndentWidth = 4;
20846   verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style);
20847   verifyFormat(
20848       "SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n",
20849       Style);
20850   verifyFormat(
20851       "SomeClass::Constructor()\n"
20852       "    : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}",
20853       Style);
20854   Style.ConstructorInitializerIndentWidth = 4;
20855   Style.ColumnLimit = 60;
20856   verifyFormat("SomeClass::Constructor()\n"
20857                "    : aaaaaaaa(aaaaaaaa)\n"
20858                "    , aaaaaaaa(aaaaaaaa)\n"
20859                "    , aaaaaaaa(aaaaaaaa) {}",
20860                Style);
20861 }
20862 
20863 TEST_F(FormatTest, ConstructorInitializersWithPreprocessorDirective) {
20864   FormatStyle Style = getLLVMStyle();
20865   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
20866   Style.ConstructorInitializerIndentWidth = 4;
20867   verifyFormat("SomeClass::Constructor()\n"
20868                "    : a{a}\n"
20869                "    , b{b} {}",
20870                Style);
20871   verifyFormat("SomeClass::Constructor()\n"
20872                "    : a{a}\n"
20873                "#if CONDITION\n"
20874                "    , b{b}\n"
20875                "#endif\n"
20876                "{\n}",
20877                Style);
20878   Style.ConstructorInitializerIndentWidth = 2;
20879   verifyFormat("SomeClass::Constructor()\n"
20880                "#if CONDITION\n"
20881                "  : a{a}\n"
20882                "#endif\n"
20883                "  , b{b}\n"
20884                "  , c{c} {\n}",
20885                Style);
20886   Style.ConstructorInitializerIndentWidth = 0;
20887   verifyFormat("SomeClass::Constructor()\n"
20888                ": a{a}\n"
20889                "#ifdef CONDITION\n"
20890                ", b{b}\n"
20891                "#else\n"
20892                ", c{c}\n"
20893                "#endif\n"
20894                ", d{d} {\n}",
20895                Style);
20896   Style.ConstructorInitializerIndentWidth = 4;
20897   verifyFormat("SomeClass::Constructor()\n"
20898                "    : a{a}\n"
20899                "#if WINDOWS\n"
20900                "#if DEBUG\n"
20901                "    , b{0}\n"
20902                "#else\n"
20903                "    , b{1}\n"
20904                "#endif\n"
20905                "#else\n"
20906                "#if DEBUG\n"
20907                "    , b{2}\n"
20908                "#else\n"
20909                "    , b{3}\n"
20910                "#endif\n"
20911                "#endif\n"
20912                "{\n}",
20913                Style);
20914   verifyFormat("SomeClass::Constructor()\n"
20915                "    : a{a}\n"
20916                "#if WINDOWS\n"
20917                "    , b{0}\n"
20918                "#if DEBUG\n"
20919                "    , c{0}\n"
20920                "#else\n"
20921                "    , c{1}\n"
20922                "#endif\n"
20923                "#else\n"
20924                "#if DEBUG\n"
20925                "    , c{2}\n"
20926                "#else\n"
20927                "    , c{3}\n"
20928                "#endif\n"
20929                "    , b{1}\n"
20930                "#endif\n"
20931                "{\n}",
20932                Style);
20933 }
20934 
20935 TEST_F(FormatTest, Destructors) {
20936   verifyFormat("void F(int &i) { i.~int(); }");
20937   verifyFormat("void F(int &i) { i->~int(); }");
20938 }
20939 
20940 TEST_F(FormatTest, FormatsWithWebKitStyle) {
20941   FormatStyle Style = getWebKitStyle();
20942 
20943   // Don't indent in outer namespaces.
20944   verifyFormat("namespace outer {\n"
20945                "int i;\n"
20946                "namespace inner {\n"
20947                "    int i;\n"
20948                "} // namespace inner\n"
20949                "} // namespace outer\n"
20950                "namespace other_outer {\n"
20951                "int i;\n"
20952                "}",
20953                Style);
20954 
20955   // Don't indent case labels.
20956   verifyFormat("switch (variable) {\n"
20957                "case 1:\n"
20958                "case 2:\n"
20959                "    doSomething();\n"
20960                "    break;\n"
20961                "default:\n"
20962                "    ++variable;\n"
20963                "}",
20964                Style);
20965 
20966   // Wrap before binary operators.
20967   EXPECT_EQ("void f()\n"
20968             "{\n"
20969             "    if (aaaaaaaaaaaaaaaa\n"
20970             "        && bbbbbbbbbbbbbbbbbbbbbbbb\n"
20971             "        && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
20972             "        return;\n"
20973             "}",
20974             format("void f() {\n"
20975                    "if (aaaaaaaaaaaaaaaa\n"
20976                    "&& bbbbbbbbbbbbbbbbbbbbbbbb\n"
20977                    "&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
20978                    "return;\n"
20979                    "}",
20980                    Style));
20981 
20982   // Allow functions on a single line.
20983   verifyFormat("void f() { return; }", Style);
20984 
20985   // Allow empty blocks on a single line and insert a space in empty blocks.
20986   EXPECT_EQ("void f() { }", format("void f() {}", Style));
20987   EXPECT_EQ("while (true) { }", format("while (true) {}", Style));
20988   // However, don't merge non-empty short loops.
20989   EXPECT_EQ("while (true) {\n"
20990             "    continue;\n"
20991             "}",
20992             format("while (true) { continue; }", Style));
20993 
20994   // Constructor initializers are formatted one per line with the "," on the
20995   // new line.
20996   verifyFormat("Constructor()\n"
20997                "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
20998                "    , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n"
20999                "          aaaaaaaaaaaaaa)\n"
21000                "    , aaaaaaaaaaaaaaaaaaaaaaa()\n"
21001                "{\n"
21002                "}",
21003                Style);
21004   verifyFormat("SomeClass::Constructor()\n"
21005                "    : a(a)\n"
21006                "{\n"
21007                "}",
21008                Style);
21009   EXPECT_EQ("SomeClass::Constructor()\n"
21010             "    : a(a)\n"
21011             "{\n"
21012             "}",
21013             format("SomeClass::Constructor():a(a){}", Style));
21014   verifyFormat("SomeClass::Constructor()\n"
21015                "    : a(a)\n"
21016                "    , b(b)\n"
21017                "    , c(c)\n"
21018                "{\n"
21019                "}",
21020                Style);
21021   verifyFormat("SomeClass::Constructor()\n"
21022                "    : a(a)\n"
21023                "{\n"
21024                "    foo();\n"
21025                "    bar();\n"
21026                "}",
21027                Style);
21028 
21029   // Access specifiers should be aligned left.
21030   verifyFormat("class C {\n"
21031                "public:\n"
21032                "    int i;\n"
21033                "};",
21034                Style);
21035 
21036   // Do not align comments.
21037   verifyFormat("int a; // Do not\n"
21038                "double b; // align comments.",
21039                Style);
21040 
21041   // Do not align operands.
21042   EXPECT_EQ("ASSERT(aaaa\n"
21043             "    || bbbb);",
21044             format("ASSERT ( aaaa\n||bbbb);", Style));
21045 
21046   // Accept input's line breaks.
21047   EXPECT_EQ("if (aaaaaaaaaaaaaaa\n"
21048             "    || bbbbbbbbbbbbbbb) {\n"
21049             "    i++;\n"
21050             "}",
21051             format("if (aaaaaaaaaaaaaaa\n"
21052                    "|| bbbbbbbbbbbbbbb) { i++; }",
21053                    Style));
21054   EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n"
21055             "    i++;\n"
21056             "}",
21057             format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style));
21058 
21059   // Don't automatically break all macro definitions (llvm.org/PR17842).
21060   verifyFormat("#define aNumber 10", Style);
21061   // However, generally keep the line breaks that the user authored.
21062   EXPECT_EQ("#define aNumber \\\n"
21063             "    10",
21064             format("#define aNumber \\\n"
21065                    " 10",
21066                    Style));
21067 
21068   // Keep empty and one-element array literals on a single line.
21069   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n"
21070             "                                  copyItems:YES];",
21071             format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n"
21072                    "copyItems:YES];",
21073                    Style));
21074   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n"
21075             "                                  copyItems:YES];",
21076             format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n"
21077                    "             copyItems:YES];",
21078                    Style));
21079   // FIXME: This does not seem right, there should be more indentation before
21080   // the array literal's entries. Nested blocks have the same problem.
21081   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
21082             "    @\"a\",\n"
21083             "    @\"a\"\n"
21084             "]\n"
21085             "                                  copyItems:YES];",
21086             format("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
21087                    "     @\"a\",\n"
21088                    "     @\"a\"\n"
21089                    "     ]\n"
21090                    "       copyItems:YES];",
21091                    Style));
21092   EXPECT_EQ(
21093       "NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
21094       "                                  copyItems:YES];",
21095       format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
21096              "   copyItems:YES];",
21097              Style));
21098 
21099   verifyFormat("[self.a b:c c:d];", Style);
21100   EXPECT_EQ("[self.a b:c\n"
21101             "        c:d];",
21102             format("[self.a b:c\n"
21103                    "c:d];",
21104                    Style));
21105 }
21106 
21107 TEST_F(FormatTest, FormatsLambdas) {
21108   verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n");
21109   verifyFormat(
21110       "int c = [b]() mutable noexcept { return [&b] { return b++; }(); }();\n");
21111   verifyFormat("int c = [&] { [=] { return b++; }(); }();\n");
21112   verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n");
21113   verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n");
21114   verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n");
21115   verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n");
21116   verifyFormat("auto c = [a = [b = 42] {}] {};\n");
21117   verifyFormat("auto c = [a = &i + 10, b = [] {}] {};\n");
21118   verifyFormat("int x = f(*+[] {});");
21119   verifyFormat("void f() {\n"
21120                "  other(x.begin(), x.end(), [&](int, int) { return 1; });\n"
21121                "}\n");
21122   verifyFormat("void f() {\n"
21123                "  other(x.begin(), //\n"
21124                "        x.end(),   //\n"
21125                "        [&](int, int) { return 1; });\n"
21126                "}\n");
21127   verifyFormat("void f() {\n"
21128                "  other.other.other.other.other(\n"
21129                "      x.begin(), x.end(),\n"
21130                "      [something, rather](int, int, int, int, int, int, int) { "
21131                "return 1; });\n"
21132                "}\n");
21133   verifyFormat(
21134       "void f() {\n"
21135       "  other.other.other.other.other(\n"
21136       "      x.begin(), x.end(),\n"
21137       "      [something, rather](int, int, int, int, int, int, int) {\n"
21138       "        //\n"
21139       "      });\n"
21140       "}\n");
21141   verifyFormat("SomeFunction([]() { // A cool function...\n"
21142                "  return 43;\n"
21143                "});");
21144   EXPECT_EQ("SomeFunction([]() {\n"
21145             "#define A a\n"
21146             "  return 43;\n"
21147             "});",
21148             format("SomeFunction([](){\n"
21149                    "#define A a\n"
21150                    "return 43;\n"
21151                    "});"));
21152   verifyFormat("void f() {\n"
21153                "  SomeFunction([](decltype(x), A *a) {});\n"
21154                "  SomeFunction([](typeof(x), A *a) {});\n"
21155                "  SomeFunction([](_Atomic(x), A *a) {});\n"
21156                "  SomeFunction([](__underlying_type(x), A *a) {});\n"
21157                "}");
21158   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
21159                "    [](const aaaaaaaaaa &a) { return a; });");
21160   verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n"
21161                "  SomeOtherFunctioooooooooooooooooooooooooon();\n"
21162                "});");
21163   verifyFormat("Constructor()\n"
21164                "    : Field([] { // comment\n"
21165                "        int i;\n"
21166                "      }) {}");
21167   verifyFormat("auto my_lambda = [](const string &some_parameter) {\n"
21168                "  return some_parameter.size();\n"
21169                "};");
21170   verifyFormat("std::function<std::string(const std::string &)> my_lambda =\n"
21171                "    [](const string &s) { return s; };");
21172   verifyFormat("int i = aaaaaa ? 1 //\n"
21173                "               : [] {\n"
21174                "                   return 2; //\n"
21175                "                 }();");
21176   verifyFormat("llvm::errs() << \"number of twos is \"\n"
21177                "             << std::count_if(v.begin(), v.end(), [](int x) {\n"
21178                "                  return x == 2; // force break\n"
21179                "                });");
21180   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
21181                "    [=](int iiiiiiiiiiii) {\n"
21182                "      return aaaaaaaaaaaaaaaaaaaaaaa !=\n"
21183                "             aaaaaaaaaaaaaaaaaaaaaaa;\n"
21184                "    });",
21185                getLLVMStyleWithColumns(60));
21186 
21187   verifyFormat("SomeFunction({[&] {\n"
21188                "                // comment\n"
21189                "              },\n"
21190                "              [&] {\n"
21191                "                // comment\n"
21192                "              }});");
21193   verifyFormat("SomeFunction({[&] {\n"
21194                "  // comment\n"
21195                "}});");
21196   verifyFormat(
21197       "virtual aaaaaaaaaaaaaaaa(\n"
21198       "    std::function<bool()> bbbbbbbbbbbb = [&]() { return true; },\n"
21199       "    aaaaa aaaaaaaaa);");
21200 
21201   // Lambdas with return types.
21202   verifyFormat("int c = []() -> int { return 2; }();\n");
21203   verifyFormat("int c = []() -> int * { return 2; }();\n");
21204   verifyFormat("int c = []() -> vector<int> { return {2}; }();\n");
21205   verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());");
21206   verifyGoogleFormat("auto a = [&b, c](D* d) -> D* {};");
21207   verifyGoogleFormat("auto a = [&b, c](D* d) -> pair<D*, D*> {};");
21208   verifyGoogleFormat("auto a = [&b, c](D* d) -> D& {};");
21209   verifyGoogleFormat("auto a = [&b, c](D* d) -> const D* {};");
21210   verifyFormat("[a, a]() -> a<1> {};");
21211   verifyFormat("[]() -> foo<5 + 2> { return {}; };");
21212   verifyFormat("[]() -> foo<5 - 2> { return {}; };");
21213   verifyFormat("[]() -> foo<5 / 2> { return {}; };");
21214   verifyFormat("[]() -> foo<5 * 2> { return {}; };");
21215   verifyFormat("[]() -> foo<5 % 2> { return {}; };");
21216   verifyFormat("[]() -> foo<5 << 2> { return {}; };");
21217   verifyFormat("[]() -> foo<!5> { return {}; };");
21218   verifyFormat("[]() -> foo<~5> { return {}; };");
21219   verifyFormat("[]() -> foo<5 | 2> { return {}; };");
21220   verifyFormat("[]() -> foo<5 || 2> { return {}; };");
21221   verifyFormat("[]() -> foo<5 & 2> { return {}; };");
21222   verifyFormat("[]() -> foo<5 && 2> { return {}; };");
21223   verifyFormat("[]() -> foo<5 == 2> { return {}; };");
21224   verifyFormat("[]() -> foo<5 != 2> { return {}; };");
21225   verifyFormat("[]() -> foo<5 >= 2> { return {}; };");
21226   verifyFormat("[]() -> foo<5 <= 2> { return {}; };");
21227   verifyFormat("[]() -> foo<5 < 2> { return {}; };");
21228   verifyFormat("[]() -> foo<2 ? 1 : 0> { return {}; };");
21229   verifyFormat("namespace bar {\n"
21230                "// broken:\n"
21231                "auto foo{[]() -> foo<5 + 2> { return {}; }};\n"
21232                "} // namespace bar");
21233   verifyFormat("namespace bar {\n"
21234                "// broken:\n"
21235                "auto foo{[]() -> foo<5 - 2> { return {}; }};\n"
21236                "} // namespace bar");
21237   verifyFormat("namespace bar {\n"
21238                "// broken:\n"
21239                "auto foo{[]() -> foo<5 / 2> { return {}; }};\n"
21240                "} // namespace bar");
21241   verifyFormat("namespace bar {\n"
21242                "// broken:\n"
21243                "auto foo{[]() -> foo<5 * 2> { return {}; }};\n"
21244                "} // namespace bar");
21245   verifyFormat("namespace bar {\n"
21246                "// broken:\n"
21247                "auto foo{[]() -> foo<5 % 2> { return {}; }};\n"
21248                "} // namespace bar");
21249   verifyFormat("namespace bar {\n"
21250                "// broken:\n"
21251                "auto foo{[]() -> foo<5 << 2> { return {}; }};\n"
21252                "} // namespace bar");
21253   verifyFormat("namespace bar {\n"
21254                "// broken:\n"
21255                "auto foo{[]() -> foo<!5> { return {}; }};\n"
21256                "} // namespace bar");
21257   verifyFormat("namespace bar {\n"
21258                "// broken:\n"
21259                "auto foo{[]() -> foo<~5> { return {}; }};\n"
21260                "} // namespace bar");
21261   verifyFormat("namespace bar {\n"
21262                "// broken:\n"
21263                "auto foo{[]() -> foo<5 | 2> { return {}; }};\n"
21264                "} // namespace bar");
21265   verifyFormat("namespace bar {\n"
21266                "// broken:\n"
21267                "auto foo{[]() -> foo<5 || 2> { return {}; }};\n"
21268                "} // namespace bar");
21269   verifyFormat("namespace bar {\n"
21270                "// broken:\n"
21271                "auto foo{[]() -> foo<5 & 2> { return {}; }};\n"
21272                "} // namespace bar");
21273   verifyFormat("namespace bar {\n"
21274                "// broken:\n"
21275                "auto foo{[]() -> foo<5 && 2> { return {}; }};\n"
21276                "} // namespace bar");
21277   verifyFormat("namespace bar {\n"
21278                "// broken:\n"
21279                "auto foo{[]() -> foo<5 == 2> { return {}; }};\n"
21280                "} // namespace bar");
21281   verifyFormat("namespace bar {\n"
21282                "// broken:\n"
21283                "auto foo{[]() -> foo<5 != 2> { return {}; }};\n"
21284                "} // namespace bar");
21285   verifyFormat("namespace bar {\n"
21286                "// broken:\n"
21287                "auto foo{[]() -> foo<5 >= 2> { return {}; }};\n"
21288                "} // namespace bar");
21289   verifyFormat("namespace bar {\n"
21290                "// broken:\n"
21291                "auto foo{[]() -> foo<5 <= 2> { return {}; }};\n"
21292                "} // namespace bar");
21293   verifyFormat("namespace bar {\n"
21294                "// broken:\n"
21295                "auto foo{[]() -> foo<5 < 2> { return {}; }};\n"
21296                "} // namespace bar");
21297   verifyFormat("namespace bar {\n"
21298                "// broken:\n"
21299                "auto foo{[]() -> foo<2 ? 1 : 0> { return {}; }};\n"
21300                "} // namespace bar");
21301   verifyFormat("[]() -> a<1> {};");
21302   verifyFormat("[]() -> a<1> { ; };");
21303   verifyFormat("[]() -> a<1> { ; }();");
21304   verifyFormat("[a, a]() -> a<true> {};");
21305   verifyFormat("[]() -> a<true> {};");
21306   verifyFormat("[]() -> a<true> { ; };");
21307   verifyFormat("[]() -> a<true> { ; }();");
21308   verifyFormat("[a, a]() -> a<false> {};");
21309   verifyFormat("[]() -> a<false> {};");
21310   verifyFormat("[]() -> a<false> { ; };");
21311   verifyFormat("[]() -> a<false> { ; }();");
21312   verifyFormat("auto foo{[]() -> foo<false> { ; }};");
21313   verifyFormat("namespace bar {\n"
21314                "auto foo{[]() -> foo<false> { ; }};\n"
21315                "} // namespace bar");
21316   verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n"
21317                "                   int j) -> int {\n"
21318                "  return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n"
21319                "};");
21320   verifyFormat(
21321       "aaaaaaaaaaaaaaaaaaaaaa(\n"
21322       "    [](aaaaaaaaaaaaaaaaaaaaaaaaaaa &aaa) -> aaaaaaaaaaaaaaaa {\n"
21323       "      return aaaaaaaaaaaaaaaaa;\n"
21324       "    });",
21325       getLLVMStyleWithColumns(70));
21326   verifyFormat("[]() //\n"
21327                "    -> int {\n"
21328                "  return 1; //\n"
21329                "};");
21330   verifyFormat("[]() -> Void<T...> {};");
21331   verifyFormat("[a, b]() -> Tuple<T...> { return {}; };");
21332   verifyFormat("SomeFunction({[]() -> int[] { return {}; }});");
21333   verifyFormat("SomeFunction({[]() -> int *[] { return {}; }});");
21334   verifyFormat("SomeFunction({[]() -> int (*)[] { return {}; }});");
21335   verifyFormat("SomeFunction({[]() -> ns::type<int (*)[]> { return {}; }});");
21336   verifyFormat("return int{[x = x]() { return x; }()};");
21337 
21338   // Lambdas with explicit template argument lists.
21339   verifyFormat(
21340       "auto L = []<template <typename> class T, class U>(T<U> &&a) {};\n");
21341   verifyFormat("auto L = []<class T>(T) {\n"
21342                "  {\n"
21343                "    f();\n"
21344                "    g();\n"
21345                "  }\n"
21346                "};\n");
21347   verifyFormat("auto L = []<class... T>(T...) {\n"
21348                "  {\n"
21349                "    f();\n"
21350                "    g();\n"
21351                "  }\n"
21352                "};\n");
21353   verifyFormat("auto L = []<typename... T>(T...) {\n"
21354                "  {\n"
21355                "    f();\n"
21356                "    g();\n"
21357                "  }\n"
21358                "};\n");
21359   verifyFormat("auto L = []<template <typename...> class T>(T...) {\n"
21360                "  {\n"
21361                "    f();\n"
21362                "    g();\n"
21363                "  }\n"
21364                "};\n");
21365   verifyFormat("auto L = []</*comment*/ class... T>(T...) {\n"
21366                "  {\n"
21367                "    f();\n"
21368                "    g();\n"
21369                "  }\n"
21370                "};\n");
21371 
21372   // Multiple lambdas in the same parentheses change indentation rules. These
21373   // lambdas are forced to start on new lines.
21374   verifyFormat("SomeFunction(\n"
21375                "    []() {\n"
21376                "      //\n"
21377                "    },\n"
21378                "    []() {\n"
21379                "      //\n"
21380                "    });");
21381 
21382   // A lambda passed as arg0 is always pushed to the next line.
21383   verifyFormat("SomeFunction(\n"
21384                "    [this] {\n"
21385                "      //\n"
21386                "    },\n"
21387                "    1);\n");
21388 
21389   // A multi-line lambda passed as arg1 forces arg0 to be pushed out, just like
21390   // the arg0 case above.
21391   auto Style = getGoogleStyle();
21392   Style.BinPackArguments = false;
21393   verifyFormat("SomeFunction(\n"
21394                "    a,\n"
21395                "    [this] {\n"
21396                "      //\n"
21397                "    },\n"
21398                "    b);\n",
21399                Style);
21400   verifyFormat("SomeFunction(\n"
21401                "    a,\n"
21402                "    [this] {\n"
21403                "      //\n"
21404                "    },\n"
21405                "    b);\n");
21406 
21407   // A lambda with a very long line forces arg0 to be pushed out irrespective of
21408   // the BinPackArguments value (as long as the code is wide enough).
21409   verifyFormat(
21410       "something->SomeFunction(\n"
21411       "    a,\n"
21412       "    [this] {\n"
21413       "      "
21414       "D0000000000000000000000000000000000000000000000000000000000001();\n"
21415       "    },\n"
21416       "    b);\n");
21417 
21418   // A multi-line lambda is pulled up as long as the introducer fits on the
21419   // previous line and there are no further args.
21420   verifyFormat("function(1, [this, that] {\n"
21421                "  //\n"
21422                "});\n");
21423   verifyFormat("function([this, that] {\n"
21424                "  //\n"
21425                "});\n");
21426   // FIXME: this format is not ideal and we should consider forcing the first
21427   // arg onto its own line.
21428   verifyFormat("function(a, b, c, //\n"
21429                "         d, [this, that] {\n"
21430                "           //\n"
21431                "         });\n");
21432 
21433   // Multiple lambdas are treated correctly even when there is a short arg0.
21434   verifyFormat("SomeFunction(\n"
21435                "    1,\n"
21436                "    [this] {\n"
21437                "      //\n"
21438                "    },\n"
21439                "    [this] {\n"
21440                "      //\n"
21441                "    },\n"
21442                "    1);\n");
21443 
21444   // More complex introducers.
21445   verifyFormat("return [i, args...] {};");
21446 
21447   // Not lambdas.
21448   verifyFormat("constexpr char hello[]{\"hello\"};");
21449   verifyFormat("double &operator[](int i) { return 0; }\n"
21450                "int i;");
21451   verifyFormat("std::unique_ptr<int[]> foo() {}");
21452   verifyFormat("int i = a[a][a]->f();");
21453   verifyFormat("int i = (*b)[a]->f();");
21454 
21455   // Other corner cases.
21456   verifyFormat("void f() {\n"
21457                "  bar([]() {} // Did not respect SpacesBeforeTrailingComments\n"
21458                "  );\n"
21459                "}");
21460 
21461   // Lambdas created through weird macros.
21462   verifyFormat("void f() {\n"
21463                "  MACRO((const AA &a) { return 1; });\n"
21464                "  MACRO((AA &a) { return 1; });\n"
21465                "}");
21466 
21467   verifyFormat("if (blah_blah(whatever, whatever, [] {\n"
21468                "      doo_dah();\n"
21469                "      doo_dah();\n"
21470                "    })) {\n"
21471                "}");
21472   verifyFormat("if constexpr (blah_blah(whatever, whatever, [] {\n"
21473                "                doo_dah();\n"
21474                "                doo_dah();\n"
21475                "              })) {\n"
21476                "}");
21477   verifyFormat("if CONSTEXPR (blah_blah(whatever, whatever, [] {\n"
21478                "                doo_dah();\n"
21479                "                doo_dah();\n"
21480                "              })) {\n"
21481                "}");
21482   verifyFormat("auto lambda = []() {\n"
21483                "  int a = 2\n"
21484                "#if A\n"
21485                "          + 2\n"
21486                "#endif\n"
21487                "      ;\n"
21488                "};");
21489 
21490   // Lambdas with complex multiline introducers.
21491   verifyFormat(
21492       "aaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
21493       "    [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]()\n"
21494       "        -> ::std::unordered_set<\n"
21495       "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n"
21496       "      //\n"
21497       "    });");
21498 
21499   FormatStyle DoNotMerge = getLLVMStyle();
21500   DoNotMerge.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
21501   verifyFormat("auto c = []() {\n"
21502                "  return b;\n"
21503                "};",
21504                "auto c = []() { return b; };", DoNotMerge);
21505   verifyFormat("auto c = []() {\n"
21506                "};",
21507                " auto c = []() {};", DoNotMerge);
21508 
21509   FormatStyle MergeEmptyOnly = getLLVMStyle();
21510   MergeEmptyOnly.AllowShortLambdasOnASingleLine = FormatStyle::SLS_Empty;
21511   verifyFormat("auto c = []() {\n"
21512                "  return b;\n"
21513                "};",
21514                "auto c = []() {\n"
21515                "  return b;\n"
21516                " };",
21517                MergeEmptyOnly);
21518   verifyFormat("auto c = []() {};",
21519                "auto c = []() {\n"
21520                "};",
21521                MergeEmptyOnly);
21522 
21523   FormatStyle MergeInline = getLLVMStyle();
21524   MergeInline.AllowShortLambdasOnASingleLine = FormatStyle::SLS_Inline;
21525   verifyFormat("auto c = []() {\n"
21526                "  return b;\n"
21527                "};",
21528                "auto c = []() { return b; };", MergeInline);
21529   verifyFormat("function([]() { return b; })", "function([]() { return b; })",
21530                MergeInline);
21531   verifyFormat("function([]() { return b; }, a)",
21532                "function([]() { return b; }, a)", MergeInline);
21533   verifyFormat("function(a, []() { return b; })",
21534                "function(a, []() { return b; })", MergeInline);
21535 
21536   // Check option "BraceWrapping.BeforeLambdaBody" and different state of
21537   // AllowShortLambdasOnASingleLine
21538   FormatStyle LLVMWithBeforeLambdaBody = getLLVMStyle();
21539   LLVMWithBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
21540   LLVMWithBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
21541   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
21542       FormatStyle::ShortLambdaStyle::SLS_None;
21543   verifyFormat("FctWithOneNestedLambdaInline_SLS_None(\n"
21544                "    []()\n"
21545                "    {\n"
21546                "      return 17;\n"
21547                "    });",
21548                LLVMWithBeforeLambdaBody);
21549   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_None(\n"
21550                "    []()\n"
21551                "    {\n"
21552                "    });",
21553                LLVMWithBeforeLambdaBody);
21554   verifyFormat("auto fct_SLS_None = []()\n"
21555                "{\n"
21556                "  return 17;\n"
21557                "};",
21558                LLVMWithBeforeLambdaBody);
21559   verifyFormat("TwoNestedLambdas_SLS_None(\n"
21560                "    []()\n"
21561                "    {\n"
21562                "      return Call(\n"
21563                "          []()\n"
21564                "          {\n"
21565                "            return 17;\n"
21566                "          });\n"
21567                "    });",
21568                LLVMWithBeforeLambdaBody);
21569   verifyFormat("void Fct() {\n"
21570                "  return {[]()\n"
21571                "          {\n"
21572                "            return 17;\n"
21573                "          }};\n"
21574                "}",
21575                LLVMWithBeforeLambdaBody);
21576 
21577   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
21578       FormatStyle::ShortLambdaStyle::SLS_Empty;
21579   verifyFormat("FctWithOneNestedLambdaInline_SLS_Empty(\n"
21580                "    []()\n"
21581                "    {\n"
21582                "      return 17;\n"
21583                "    });",
21584                LLVMWithBeforeLambdaBody);
21585   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_Empty([]() {});",
21586                LLVMWithBeforeLambdaBody);
21587   verifyFormat("FctWithOneNestedLambdaEmptyInsideAVeryVeryVeryVeryVeryVeryVeryL"
21588                "ongFunctionName_SLS_Empty(\n"
21589                "    []() {});",
21590                LLVMWithBeforeLambdaBody);
21591   verifyFormat("FctWithMultipleParams_SLS_Empty(A, B,\n"
21592                "                                []()\n"
21593                "                                {\n"
21594                "                                  return 17;\n"
21595                "                                });",
21596                LLVMWithBeforeLambdaBody);
21597   verifyFormat("auto fct_SLS_Empty = []()\n"
21598                "{\n"
21599                "  return 17;\n"
21600                "};",
21601                LLVMWithBeforeLambdaBody);
21602   verifyFormat("TwoNestedLambdas_SLS_Empty(\n"
21603                "    []()\n"
21604                "    {\n"
21605                "      return Call([]() {});\n"
21606                "    });",
21607                LLVMWithBeforeLambdaBody);
21608   verifyFormat("TwoNestedLambdas_SLS_Empty(A,\n"
21609                "                           []()\n"
21610                "                           {\n"
21611                "                             return Call([]() {});\n"
21612                "                           });",
21613                LLVMWithBeforeLambdaBody);
21614   verifyFormat(
21615       "FctWithLongLineInLambda_SLS_Empty(\n"
21616       "    []()\n"
21617       "    {\n"
21618       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
21619       "                               AndShouldNotBeConsiderAsInline,\n"
21620       "                               LambdaBodyMustBeBreak);\n"
21621       "    });",
21622       LLVMWithBeforeLambdaBody);
21623 
21624   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
21625       FormatStyle::ShortLambdaStyle::SLS_Inline;
21626   verifyFormat("FctWithOneNestedLambdaInline_SLS_Inline([]() { return 17; });",
21627                LLVMWithBeforeLambdaBody);
21628   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_Inline([]() {});",
21629                LLVMWithBeforeLambdaBody);
21630   verifyFormat("auto fct_SLS_Inline = []()\n"
21631                "{\n"
21632                "  return 17;\n"
21633                "};",
21634                LLVMWithBeforeLambdaBody);
21635   verifyFormat("TwoNestedLambdas_SLS_Inline([]() { return Call([]() { return "
21636                "17; }); });",
21637                LLVMWithBeforeLambdaBody);
21638   verifyFormat(
21639       "FctWithLongLineInLambda_SLS_Inline(\n"
21640       "    []()\n"
21641       "    {\n"
21642       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
21643       "                               AndShouldNotBeConsiderAsInline,\n"
21644       "                               LambdaBodyMustBeBreak);\n"
21645       "    });",
21646       LLVMWithBeforeLambdaBody);
21647   verifyFormat("FctWithMultipleParams_SLS_Inline("
21648                "VeryLongParameterThatShouldAskToBeOnMultiLine,\n"
21649                "                                 []() { return 17; });",
21650                LLVMWithBeforeLambdaBody);
21651   verifyFormat(
21652       "FctWithMultipleParams_SLS_Inline(FirstParam, []() { return 17; });",
21653       LLVMWithBeforeLambdaBody);
21654 
21655   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
21656       FormatStyle::ShortLambdaStyle::SLS_All;
21657   verifyFormat("FctWithOneNestedLambdaInline_SLS_All([]() { return 17; });",
21658                LLVMWithBeforeLambdaBody);
21659   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_All([]() {});",
21660                LLVMWithBeforeLambdaBody);
21661   verifyFormat("auto fct_SLS_All = []() { return 17; };",
21662                LLVMWithBeforeLambdaBody);
21663   verifyFormat("FctWithOneParam_SLS_All(\n"
21664                "    []()\n"
21665                "    {\n"
21666                "      // A cool function...\n"
21667                "      return 43;\n"
21668                "    });",
21669                LLVMWithBeforeLambdaBody);
21670   verifyFormat("FctWithMultipleParams_SLS_All("
21671                "VeryLongParameterThatShouldAskToBeOnMultiLine,\n"
21672                "                              []() { return 17; });",
21673                LLVMWithBeforeLambdaBody);
21674   verifyFormat("FctWithMultipleParams_SLS_All(A, []() { return 17; });",
21675                LLVMWithBeforeLambdaBody);
21676   verifyFormat("FctWithMultipleParams_SLS_All(A, B, []() { return 17; });",
21677                LLVMWithBeforeLambdaBody);
21678   verifyFormat(
21679       "FctWithLongLineInLambda_SLS_All(\n"
21680       "    []()\n"
21681       "    {\n"
21682       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
21683       "                               AndShouldNotBeConsiderAsInline,\n"
21684       "                               LambdaBodyMustBeBreak);\n"
21685       "    });",
21686       LLVMWithBeforeLambdaBody);
21687   verifyFormat(
21688       "auto fct_SLS_All = []()\n"
21689       "{\n"
21690       "  return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
21691       "                           AndShouldNotBeConsiderAsInline,\n"
21692       "                           LambdaBodyMustBeBreak);\n"
21693       "};",
21694       LLVMWithBeforeLambdaBody);
21695   LLVMWithBeforeLambdaBody.BinPackParameters = false;
21696   verifyFormat("FctAllOnSameLine_SLS_All([]() { return S; }, Fst, Second);",
21697                LLVMWithBeforeLambdaBody);
21698   verifyFormat(
21699       "FctWithLongLineInLambda_SLS_All([]() { return SomeValueNotSoLong; },\n"
21700       "                                FirstParam,\n"
21701       "                                SecondParam,\n"
21702       "                                ThirdParam,\n"
21703       "                                FourthParam);",
21704       LLVMWithBeforeLambdaBody);
21705   verifyFormat("FctWithLongLineInLambda_SLS_All(\n"
21706                "    []() { return "
21707                "SomeValueVeryVeryVeryVeryVeryVeryVeryVeryVeryLong; },\n"
21708                "    FirstParam,\n"
21709                "    SecondParam,\n"
21710                "    ThirdParam,\n"
21711                "    FourthParam);",
21712                LLVMWithBeforeLambdaBody);
21713   verifyFormat(
21714       "FctWithLongLineInLambda_SLS_All(FirstParam,\n"
21715       "                                SecondParam,\n"
21716       "                                ThirdParam,\n"
21717       "                                FourthParam,\n"
21718       "                                []() { return SomeValueNotSoLong; });",
21719       LLVMWithBeforeLambdaBody);
21720   verifyFormat("FctWithLongLineInLambda_SLS_All(\n"
21721                "    []()\n"
21722                "    {\n"
21723                "      return "
21724                "HereAVeryLongLineThatWillBeFormattedOnMultipleLineAndShouldNotB"
21725                "eConsiderAsInline;\n"
21726                "    });",
21727                LLVMWithBeforeLambdaBody);
21728   verifyFormat(
21729       "FctWithLongLineInLambda_SLS_All(\n"
21730       "    []()\n"
21731       "    {\n"
21732       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
21733       "                               AndShouldNotBeConsiderAsInline,\n"
21734       "                               LambdaBodyMustBeBreak);\n"
21735       "    });",
21736       LLVMWithBeforeLambdaBody);
21737   verifyFormat("FctWithTwoParams_SLS_All(\n"
21738                "    []()\n"
21739                "    {\n"
21740                "      // A cool function...\n"
21741                "      return 43;\n"
21742                "    },\n"
21743                "    87);",
21744                LLVMWithBeforeLambdaBody);
21745   verifyFormat("FctWithTwoParams_SLS_All([]() { return 43; }, 87);",
21746                LLVMWithBeforeLambdaBody);
21747   verifyFormat("FctWithOneNestedLambdas_SLS_All([]() { return 17; });",
21748                LLVMWithBeforeLambdaBody);
21749   verifyFormat(
21750       "TwoNestedLambdas_SLS_All([]() { return Call([]() { return 17; }); });",
21751       LLVMWithBeforeLambdaBody);
21752   verifyFormat("TwoNestedLambdas_SLS_All([]() { return Call([]() { return 17; "
21753                "}); }, x);",
21754                LLVMWithBeforeLambdaBody);
21755   verifyFormat("TwoNestedLambdas_SLS_All(\n"
21756                "    []()\n"
21757                "    {\n"
21758                "      // A cool function...\n"
21759                "      return Call([]() { return 17; });\n"
21760                "    });",
21761                LLVMWithBeforeLambdaBody);
21762   verifyFormat("TwoNestedLambdas_SLS_All(\n"
21763                "    []()\n"
21764                "    {\n"
21765                "      return Call(\n"
21766                "          []()\n"
21767                "          {\n"
21768                "            // A cool function...\n"
21769                "            return 17;\n"
21770                "          });\n"
21771                "    });",
21772                LLVMWithBeforeLambdaBody);
21773 
21774   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
21775       FormatStyle::ShortLambdaStyle::SLS_None;
21776 
21777   verifyFormat("auto select = [this]() -> const Library::Object *\n"
21778                "{\n"
21779                "  return MyAssignment::SelectFromList(this);\n"
21780                "};\n",
21781                LLVMWithBeforeLambdaBody);
21782 
21783   verifyFormat("auto select = [this]() -> const Library::Object &\n"
21784                "{\n"
21785                "  return MyAssignment::SelectFromList(this);\n"
21786                "};\n",
21787                LLVMWithBeforeLambdaBody);
21788 
21789   verifyFormat("auto select = [this]() -> std::unique_ptr<Object>\n"
21790                "{\n"
21791                "  return MyAssignment::SelectFromList(this);\n"
21792                "};\n",
21793                LLVMWithBeforeLambdaBody);
21794 
21795   verifyFormat("namespace test {\n"
21796                "class Test {\n"
21797                "public:\n"
21798                "  Test() = default;\n"
21799                "};\n"
21800                "} // namespace test",
21801                LLVMWithBeforeLambdaBody);
21802 
21803   // Lambdas with different indentation styles.
21804   Style = getLLVMStyleWithColumns(100);
21805   EXPECT_EQ("SomeResult doSomething(SomeObject promise) {\n"
21806             "  return promise.then(\n"
21807             "      [this, &someVariable, someObject = "
21808             "std::mv(s)](std::vector<int> evaluated) mutable {\n"
21809             "        return someObject.startAsyncAction().then(\n"
21810             "            [this, &someVariable](AsyncActionResult result) "
21811             "mutable { result.processMore(); });\n"
21812             "      });\n"
21813             "}\n",
21814             format("SomeResult doSomething(SomeObject promise) {\n"
21815                    "  return promise.then([this, &someVariable, someObject = "
21816                    "std::mv(s)](std::vector<int> evaluated) mutable {\n"
21817                    "    return someObject.startAsyncAction().then([this, "
21818                    "&someVariable](AsyncActionResult result) mutable {\n"
21819                    "      result.processMore();\n"
21820                    "    });\n"
21821                    "  });\n"
21822                    "}\n",
21823                    Style));
21824   Style.LambdaBodyIndentation = FormatStyle::LBI_OuterScope;
21825   verifyFormat("test() {\n"
21826                "  ([]() -> {\n"
21827                "    int b = 32;\n"
21828                "    return 3;\n"
21829                "  }).foo();\n"
21830                "}",
21831                Style);
21832   verifyFormat("test() {\n"
21833                "  []() -> {\n"
21834                "    int b = 32;\n"
21835                "    return 3;\n"
21836                "  }\n"
21837                "}",
21838                Style);
21839   verifyFormat("std::sort(v.begin(), v.end(),\n"
21840                "          [](const auto &someLongArgumentName, const auto "
21841                "&someOtherLongArgumentName) {\n"
21842                "  return someLongArgumentName.someMemberVariable < "
21843                "someOtherLongArgumentName.someMemberVariable;\n"
21844                "});",
21845                Style);
21846   verifyFormat("test() {\n"
21847                "  (\n"
21848                "      []() -> {\n"
21849                "        int b = 32;\n"
21850                "        return 3;\n"
21851                "      },\n"
21852                "      foo, bar)\n"
21853                "      .foo();\n"
21854                "}",
21855                Style);
21856   verifyFormat("test() {\n"
21857                "  ([]() -> {\n"
21858                "    int b = 32;\n"
21859                "    return 3;\n"
21860                "  })\n"
21861                "      .foo()\n"
21862                "      .bar();\n"
21863                "}",
21864                Style);
21865   EXPECT_EQ("SomeResult doSomething(SomeObject promise) {\n"
21866             "  return promise.then(\n"
21867             "      [this, &someVariable, someObject = "
21868             "std::mv(s)](std::vector<int> evaluated) mutable {\n"
21869             "    return someObject.startAsyncAction().then(\n"
21870             "        [this, &someVariable](AsyncActionResult result) mutable { "
21871             "result.processMore(); });\n"
21872             "  });\n"
21873             "}\n",
21874             format("SomeResult doSomething(SomeObject promise) {\n"
21875                    "  return promise.then([this, &someVariable, someObject = "
21876                    "std::mv(s)](std::vector<int> evaluated) mutable {\n"
21877                    "    return someObject.startAsyncAction().then([this, "
21878                    "&someVariable](AsyncActionResult result) mutable {\n"
21879                    "      result.processMore();\n"
21880                    "    });\n"
21881                    "  });\n"
21882                    "}\n",
21883                    Style));
21884   EXPECT_EQ("SomeResult doSomething(SomeObject promise) {\n"
21885             "  return promise.then([this, &someVariable] {\n"
21886             "    return someObject.startAsyncAction().then(\n"
21887             "        [this, &someVariable](AsyncActionResult result) mutable { "
21888             "result.processMore(); });\n"
21889             "  });\n"
21890             "}\n",
21891             format("SomeResult doSomething(SomeObject promise) {\n"
21892                    "  return promise.then([this, &someVariable] {\n"
21893                    "    return someObject.startAsyncAction().then([this, "
21894                    "&someVariable](AsyncActionResult result) mutable {\n"
21895                    "      result.processMore();\n"
21896                    "    });\n"
21897                    "  });\n"
21898                    "}\n",
21899                    Style));
21900   Style = getGoogleStyle();
21901   Style.LambdaBodyIndentation = FormatStyle::LBI_OuterScope;
21902   EXPECT_EQ("#define A                                       \\\n"
21903             "  [] {                                          \\\n"
21904             "    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx(        \\\n"
21905             "        xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); \\\n"
21906             "      }",
21907             format("#define A [] { xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx( \\\n"
21908                    "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); }",
21909                    Style));
21910   // TODO: The current formatting has a minor issue that's not worth fixing
21911   // right now whereby the closing brace is indented relative to the signature
21912   // instead of being aligned. This only happens with macros.
21913 }
21914 
21915 TEST_F(FormatTest, LambdaWithLineComments) {
21916   FormatStyle LLVMWithBeforeLambdaBody = getLLVMStyle();
21917   LLVMWithBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
21918   LLVMWithBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
21919   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
21920       FormatStyle::ShortLambdaStyle::SLS_All;
21921 
21922   verifyFormat("auto k = []() { return; }", LLVMWithBeforeLambdaBody);
21923   verifyFormat("auto k = []() // comment\n"
21924                "{ return; }",
21925                LLVMWithBeforeLambdaBody);
21926   verifyFormat("auto k = []() /* comment */ { return; }",
21927                LLVMWithBeforeLambdaBody);
21928   verifyFormat("auto k = []() /* comment */ /* comment */ { return; }",
21929                LLVMWithBeforeLambdaBody);
21930   verifyFormat("auto k = []() // X\n"
21931                "{ return; }",
21932                LLVMWithBeforeLambdaBody);
21933   verifyFormat(
21934       "auto k = []() // XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"
21935       "{ return; }",
21936       LLVMWithBeforeLambdaBody);
21937 
21938   LLVMWithBeforeLambdaBody.ColumnLimit = 0;
21939 
21940   verifyFormat("foo([]()\n"
21941                "    {\n"
21942                "      bar();    //\n"
21943                "      return 1; // comment\n"
21944                "    }());",
21945                "foo([]() {\n"
21946                "  bar(); //\n"
21947                "  return 1; // comment\n"
21948                "}());",
21949                LLVMWithBeforeLambdaBody);
21950   verifyFormat("foo(\n"
21951                "    1, MACRO {\n"
21952                "      baz();\n"
21953                "      bar(); // comment\n"
21954                "    },\n"
21955                "    []() {});",
21956                "foo(\n"
21957                "  1, MACRO { baz(); bar(); // comment\n"
21958                "  }, []() {}\n"
21959                ");",
21960                LLVMWithBeforeLambdaBody);
21961 }
21962 
21963 TEST_F(FormatTest, EmptyLinesInLambdas) {
21964   verifyFormat("auto lambda = []() {\n"
21965                "  x(); //\n"
21966                "};",
21967                "auto lambda = []() {\n"
21968                "\n"
21969                "  x(); //\n"
21970                "\n"
21971                "};");
21972 }
21973 
21974 TEST_F(FormatTest, FormatsBlocks) {
21975   FormatStyle ShortBlocks = getLLVMStyle();
21976   ShortBlocks.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
21977   verifyFormat("int (^Block)(int, int);", ShortBlocks);
21978   verifyFormat("int (^Block1)(int, int) = ^(int i, int j)", ShortBlocks);
21979   verifyFormat("void (^block)(int) = ^(id test) { int i; };", ShortBlocks);
21980   verifyFormat("void (^block)(int) = ^(int test) { int i; };", ShortBlocks);
21981   verifyFormat("void (^block)(int) = ^id(int test) { int i; };", ShortBlocks);
21982   verifyFormat("void (^block)(int) = ^int(int test) { int i; };", ShortBlocks);
21983 
21984   verifyFormat("foo(^{ bar(); });", ShortBlocks);
21985   verifyFormat("foo(a, ^{ bar(); });", ShortBlocks);
21986   verifyFormat("{ void (^block)(Object *x); }", ShortBlocks);
21987 
21988   verifyFormat("[operation setCompletionBlock:^{\n"
21989                "  [self onOperationDone];\n"
21990                "}];");
21991   verifyFormat("int i = {[operation setCompletionBlock:^{\n"
21992                "  [self onOperationDone];\n"
21993                "}]};");
21994   verifyFormat("[operation setCompletionBlock:^(int *i) {\n"
21995                "  f();\n"
21996                "}];");
21997   verifyFormat("int a = [operation block:^int(int *i) {\n"
21998                "  return 1;\n"
21999                "}];");
22000   verifyFormat("[myObject doSomethingWith:arg1\n"
22001                "                      aaa:^int(int *a) {\n"
22002                "                        return 1;\n"
22003                "                      }\n"
22004                "                      bbb:f(a * bbbbbbbb)];");
22005 
22006   verifyFormat("[operation setCompletionBlock:^{\n"
22007                "  [self.delegate newDataAvailable];\n"
22008                "}];",
22009                getLLVMStyleWithColumns(60));
22010   verifyFormat("dispatch_async(_fileIOQueue, ^{\n"
22011                "  NSString *path = [self sessionFilePath];\n"
22012                "  if (path) {\n"
22013                "    // ...\n"
22014                "  }\n"
22015                "});");
22016   verifyFormat("[[SessionService sharedService]\n"
22017                "    loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
22018                "      if (window) {\n"
22019                "        [self windowDidLoad:window];\n"
22020                "      } else {\n"
22021                "        [self errorLoadingWindow];\n"
22022                "      }\n"
22023                "    }];");
22024   verifyFormat("void (^largeBlock)(void) = ^{\n"
22025                "  // ...\n"
22026                "};\n",
22027                getLLVMStyleWithColumns(40));
22028   verifyFormat("[[SessionService sharedService]\n"
22029                "    loadWindowWithCompletionBlock: //\n"
22030                "        ^(SessionWindow *window) {\n"
22031                "          if (window) {\n"
22032                "            [self windowDidLoad:window];\n"
22033                "          } else {\n"
22034                "            [self errorLoadingWindow];\n"
22035                "          }\n"
22036                "        }];",
22037                getLLVMStyleWithColumns(60));
22038   verifyFormat("[myObject doSomethingWith:arg1\n"
22039                "    firstBlock:^(Foo *a) {\n"
22040                "      // ...\n"
22041                "      int i;\n"
22042                "    }\n"
22043                "    secondBlock:^(Bar *b) {\n"
22044                "      // ...\n"
22045                "      int i;\n"
22046                "    }\n"
22047                "    thirdBlock:^Foo(Bar *b) {\n"
22048                "      // ...\n"
22049                "      int i;\n"
22050                "    }];");
22051   verifyFormat("[myObject doSomethingWith:arg1\n"
22052                "               firstBlock:-1\n"
22053                "              secondBlock:^(Bar *b) {\n"
22054                "                // ...\n"
22055                "                int i;\n"
22056                "              }];");
22057 
22058   verifyFormat("f(^{\n"
22059                "  @autoreleasepool {\n"
22060                "    if (a) {\n"
22061                "      g();\n"
22062                "    }\n"
22063                "  }\n"
22064                "});");
22065   verifyFormat("Block b = ^int *(A *a, B *b) {}");
22066   verifyFormat("BOOL (^aaa)(void) = ^BOOL {\n"
22067                "};");
22068 
22069   FormatStyle FourIndent = getLLVMStyle();
22070   FourIndent.ObjCBlockIndentWidth = 4;
22071   verifyFormat("[operation setCompletionBlock:^{\n"
22072                "    [self onOperationDone];\n"
22073                "}];",
22074                FourIndent);
22075 }
22076 
22077 TEST_F(FormatTest, FormatsBlocksWithZeroColumnWidth) {
22078   FormatStyle ZeroColumn = getLLVMStyleWithColumns(0);
22079 
22080   verifyFormat("[[SessionService sharedService] "
22081                "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
22082                "  if (window) {\n"
22083                "    [self windowDidLoad:window];\n"
22084                "  } else {\n"
22085                "    [self errorLoadingWindow];\n"
22086                "  }\n"
22087                "}];",
22088                ZeroColumn);
22089   EXPECT_EQ("[[SessionService sharedService]\n"
22090             "    loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
22091             "      if (window) {\n"
22092             "        [self windowDidLoad:window];\n"
22093             "      } else {\n"
22094             "        [self errorLoadingWindow];\n"
22095             "      }\n"
22096             "    }];",
22097             format("[[SessionService sharedService]\n"
22098                    "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
22099                    "                if (window) {\n"
22100                    "    [self windowDidLoad:window];\n"
22101                    "  } else {\n"
22102                    "    [self errorLoadingWindow];\n"
22103                    "  }\n"
22104                    "}];",
22105                    ZeroColumn));
22106   verifyFormat("[myObject doSomethingWith:arg1\n"
22107                "    firstBlock:^(Foo *a) {\n"
22108                "      // ...\n"
22109                "      int i;\n"
22110                "    }\n"
22111                "    secondBlock:^(Bar *b) {\n"
22112                "      // ...\n"
22113                "      int i;\n"
22114                "    }\n"
22115                "    thirdBlock:^Foo(Bar *b) {\n"
22116                "      // ...\n"
22117                "      int i;\n"
22118                "    }];",
22119                ZeroColumn);
22120   verifyFormat("f(^{\n"
22121                "  @autoreleasepool {\n"
22122                "    if (a) {\n"
22123                "      g();\n"
22124                "    }\n"
22125                "  }\n"
22126                "});",
22127                ZeroColumn);
22128   verifyFormat("void (^largeBlock)(void) = ^{\n"
22129                "  // ...\n"
22130                "};",
22131                ZeroColumn);
22132 
22133   ZeroColumn.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
22134   EXPECT_EQ("void (^largeBlock)(void) = ^{ int i; };",
22135             format("void   (^largeBlock)(void) = ^{ int   i; };", ZeroColumn));
22136   ZeroColumn.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Never;
22137   EXPECT_EQ("void (^largeBlock)(void) = ^{\n"
22138             "  int i;\n"
22139             "};",
22140             format("void   (^largeBlock)(void) = ^{ int   i; };", ZeroColumn));
22141 }
22142 
22143 TEST_F(FormatTest, SupportsCRLF) {
22144   EXPECT_EQ("int a;\r\n"
22145             "int b;\r\n"
22146             "int c;\r\n",
22147             format("int a;\r\n"
22148                    "  int b;\r\n"
22149                    "    int c;\r\n",
22150                    getLLVMStyle()));
22151   EXPECT_EQ("int a;\r\n"
22152             "int b;\r\n"
22153             "int c;\r\n",
22154             format("int a;\r\n"
22155                    "  int b;\n"
22156                    "    int c;\r\n",
22157                    getLLVMStyle()));
22158   EXPECT_EQ("int a;\n"
22159             "int b;\n"
22160             "int c;\n",
22161             format("int a;\r\n"
22162                    "  int b;\n"
22163                    "    int c;\n",
22164                    getLLVMStyle()));
22165   EXPECT_EQ("\"aaaaaaa \"\r\n"
22166             "\"bbbbbbb\";\r\n",
22167             format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10)));
22168   EXPECT_EQ("#define A \\\r\n"
22169             "  b;      \\\r\n"
22170             "  c;      \\\r\n"
22171             "  d;\r\n",
22172             format("#define A \\\r\n"
22173                    "  b; \\\r\n"
22174                    "  c; d; \r\n",
22175                    getGoogleStyle()));
22176 
22177   EXPECT_EQ("/*\r\n"
22178             "multi line block comments\r\n"
22179             "should not introduce\r\n"
22180             "an extra carriage return\r\n"
22181             "*/\r\n",
22182             format("/*\r\n"
22183                    "multi line block comments\r\n"
22184                    "should not introduce\r\n"
22185                    "an extra carriage return\r\n"
22186                    "*/\r\n"));
22187   EXPECT_EQ("/*\r\n"
22188             "\r\n"
22189             "*/",
22190             format("/*\r\n"
22191                    "    \r\r\r\n"
22192                    "*/"));
22193 
22194   FormatStyle style = getLLVMStyle();
22195 
22196   style.DeriveLineEnding = true;
22197   style.UseCRLF = false;
22198   EXPECT_EQ("union FooBarBazQux {\n"
22199             "  int foo;\n"
22200             "  int bar;\n"
22201             "  int baz;\n"
22202             "};",
22203             format("union FooBarBazQux {\r\n"
22204                    "  int foo;\n"
22205                    "  int bar;\r\n"
22206                    "  int baz;\n"
22207                    "};",
22208                    style));
22209   style.UseCRLF = true;
22210   EXPECT_EQ("union FooBarBazQux {\r\n"
22211             "  int foo;\r\n"
22212             "  int bar;\r\n"
22213             "  int baz;\r\n"
22214             "};",
22215             format("union FooBarBazQux {\r\n"
22216                    "  int foo;\n"
22217                    "  int bar;\r\n"
22218                    "  int baz;\n"
22219                    "};",
22220                    style));
22221 
22222   style.DeriveLineEnding = false;
22223   style.UseCRLF = false;
22224   EXPECT_EQ("union FooBarBazQux {\n"
22225             "  int foo;\n"
22226             "  int bar;\n"
22227             "  int baz;\n"
22228             "  int qux;\n"
22229             "};",
22230             format("union FooBarBazQux {\r\n"
22231                    "  int foo;\n"
22232                    "  int bar;\r\n"
22233                    "  int baz;\n"
22234                    "  int qux;\r\n"
22235                    "};",
22236                    style));
22237   style.UseCRLF = true;
22238   EXPECT_EQ("union FooBarBazQux {\r\n"
22239             "  int foo;\r\n"
22240             "  int bar;\r\n"
22241             "  int baz;\r\n"
22242             "  int qux;\r\n"
22243             "};",
22244             format("union FooBarBazQux {\r\n"
22245                    "  int foo;\n"
22246                    "  int bar;\r\n"
22247                    "  int baz;\n"
22248                    "  int qux;\n"
22249                    "};",
22250                    style));
22251 
22252   style.DeriveLineEnding = true;
22253   style.UseCRLF = false;
22254   EXPECT_EQ("union FooBarBazQux {\r\n"
22255             "  int foo;\r\n"
22256             "  int bar;\r\n"
22257             "  int baz;\r\n"
22258             "  int qux;\r\n"
22259             "};",
22260             format("union FooBarBazQux {\r\n"
22261                    "  int foo;\n"
22262                    "  int bar;\r\n"
22263                    "  int baz;\n"
22264                    "  int qux;\r\n"
22265                    "};",
22266                    style));
22267   style.UseCRLF = true;
22268   EXPECT_EQ("union FooBarBazQux {\n"
22269             "  int foo;\n"
22270             "  int bar;\n"
22271             "  int baz;\n"
22272             "  int qux;\n"
22273             "};",
22274             format("union FooBarBazQux {\r\n"
22275                    "  int foo;\n"
22276                    "  int bar;\r\n"
22277                    "  int baz;\n"
22278                    "  int qux;\n"
22279                    "};",
22280                    style));
22281 }
22282 
22283 TEST_F(FormatTest, MunchSemicolonAfterBlocks) {
22284   verifyFormat("MY_CLASS(C) {\n"
22285                "  int i;\n"
22286                "  int j;\n"
22287                "};");
22288 }
22289 
22290 TEST_F(FormatTest, ConfigurableContinuationIndentWidth) {
22291   FormatStyle TwoIndent = getLLVMStyleWithColumns(15);
22292   TwoIndent.ContinuationIndentWidth = 2;
22293 
22294   EXPECT_EQ("int i =\n"
22295             "  longFunction(\n"
22296             "    arg);",
22297             format("int i = longFunction(arg);", TwoIndent));
22298 
22299   FormatStyle SixIndent = getLLVMStyleWithColumns(20);
22300   SixIndent.ContinuationIndentWidth = 6;
22301 
22302   EXPECT_EQ("int i =\n"
22303             "      longFunction(\n"
22304             "            arg);",
22305             format("int i = longFunction(arg);", SixIndent));
22306 }
22307 
22308 TEST_F(FormatTest, WrappedClosingParenthesisIndent) {
22309   FormatStyle Style = getLLVMStyle();
22310   verifyFormat("int Foo::getter(\n"
22311                "    //\n"
22312                ") const {\n"
22313                "  return foo;\n"
22314                "}",
22315                Style);
22316   verifyFormat("void Foo::setter(\n"
22317                "    //\n"
22318                ") {\n"
22319                "  foo = 1;\n"
22320                "}",
22321                Style);
22322 }
22323 
22324 TEST_F(FormatTest, SpacesInAngles) {
22325   FormatStyle Spaces = getLLVMStyle();
22326   Spaces.SpacesInAngles = FormatStyle::SIAS_Always;
22327 
22328   verifyFormat("vector< ::std::string > x1;", Spaces);
22329   verifyFormat("Foo< int, Bar > x2;", Spaces);
22330   verifyFormat("Foo< ::int, ::Bar > x3;", Spaces);
22331 
22332   verifyFormat("static_cast< int >(arg);", Spaces);
22333   verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces);
22334   verifyFormat("f< int, float >();", Spaces);
22335   verifyFormat("template <> g() {}", Spaces);
22336   verifyFormat("template < std::vector< int > > f() {}", Spaces);
22337   verifyFormat("std::function< void(int, int) > fct;", Spaces);
22338   verifyFormat("void inFunction() { std::function< void(int, int) > fct; }",
22339                Spaces);
22340 
22341   Spaces.Standard = FormatStyle::LS_Cpp03;
22342   Spaces.SpacesInAngles = FormatStyle::SIAS_Always;
22343   verifyFormat("A< A< int > >();", Spaces);
22344 
22345   Spaces.SpacesInAngles = FormatStyle::SIAS_Never;
22346   verifyFormat("A<A<int> >();", Spaces);
22347 
22348   Spaces.SpacesInAngles = FormatStyle::SIAS_Leave;
22349   verifyFormat("vector< ::std::string> x4;", "vector<::std::string> x4;",
22350                Spaces);
22351   verifyFormat("vector< ::std::string > x4;", "vector<::std::string > x4;",
22352                Spaces);
22353 
22354   verifyFormat("A<A<int> >();", Spaces);
22355   verifyFormat("A<A<int> >();", "A<A<int>>();", Spaces);
22356   verifyFormat("A< A< int > >();", Spaces);
22357 
22358   Spaces.Standard = FormatStyle::LS_Cpp11;
22359   Spaces.SpacesInAngles = FormatStyle::SIAS_Always;
22360   verifyFormat("A< A< int > >();", Spaces);
22361 
22362   Spaces.SpacesInAngles = FormatStyle::SIAS_Never;
22363   verifyFormat("vector<::std::string> x4;", Spaces);
22364   verifyFormat("vector<int> x5;", Spaces);
22365   verifyFormat("Foo<int, Bar> x6;", Spaces);
22366   verifyFormat("Foo<::int, ::Bar> x7;", Spaces);
22367 
22368   verifyFormat("A<A<int>>();", Spaces);
22369 
22370   Spaces.SpacesInAngles = FormatStyle::SIAS_Leave;
22371   verifyFormat("vector<::std::string> x4;", Spaces);
22372   verifyFormat("vector< ::std::string > x4;", Spaces);
22373   verifyFormat("vector<int> x5;", Spaces);
22374   verifyFormat("vector< int > x5;", Spaces);
22375   verifyFormat("Foo<int, Bar> x6;", Spaces);
22376   verifyFormat("Foo< int, Bar > x6;", Spaces);
22377   verifyFormat("Foo<::int, ::Bar> x7;", Spaces);
22378   verifyFormat("Foo< ::int, ::Bar > x7;", Spaces);
22379 
22380   verifyFormat("A<A<int>>();", Spaces);
22381   verifyFormat("A< A< int > >();", Spaces);
22382   verifyFormat("A<A<int > >();", Spaces);
22383   verifyFormat("A< A< int>>();", Spaces);
22384 
22385   Spaces.SpacesInAngles = FormatStyle::SIAS_Always;
22386   verifyFormat("// clang-format off\n"
22387                "foo<<<1, 1>>>();\n"
22388                "// clang-format on\n",
22389                Spaces);
22390   verifyFormat("// clang-format off\n"
22391                "foo< < <1, 1> > >();\n"
22392                "// clang-format on\n",
22393                Spaces);
22394 }
22395 
22396 TEST_F(FormatTest, SpaceAfterTemplateKeyword) {
22397   FormatStyle Style = getLLVMStyle();
22398   Style.SpaceAfterTemplateKeyword = false;
22399   verifyFormat("template<int> void foo();", Style);
22400 }
22401 
22402 TEST_F(FormatTest, TripleAngleBrackets) {
22403   verifyFormat("f<<<1, 1>>>();");
22404   verifyFormat("f<<<1, 1, 1, s>>>();");
22405   verifyFormat("f<<<a, b, c, d>>>();");
22406   EXPECT_EQ("f<<<1, 1>>>();", format("f <<< 1, 1 >>> ();"));
22407   verifyFormat("f<param><<<1, 1>>>();");
22408   verifyFormat("f<1><<<1, 1>>>();");
22409   EXPECT_EQ("f<param><<<1, 1>>>();", format("f< param > <<< 1, 1 >>> ();"));
22410   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
22411                "aaaaaaaaaaa<<<\n    1, 1>>>();");
22412   verifyFormat("aaaaaaaaaaaaaaa<aaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaaaaa>\n"
22413                "    <<<aaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaaaaaaaaa>>>();");
22414 }
22415 
22416 TEST_F(FormatTest, MergeLessLessAtEnd) {
22417   verifyFormat("<<");
22418   EXPECT_EQ("< < <", format("\\\n<<<"));
22419   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
22420                "aaallvm::outs() <<");
22421   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
22422                "aaaallvm::outs()\n    <<");
22423 }
22424 
22425 TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) {
22426   std::string code = "#if A\n"
22427                      "#if B\n"
22428                      "a.\n"
22429                      "#endif\n"
22430                      "    a = 1;\n"
22431                      "#else\n"
22432                      "#endif\n"
22433                      "#if C\n"
22434                      "#else\n"
22435                      "#endif\n";
22436   EXPECT_EQ(code, format(code));
22437 }
22438 
22439 TEST_F(FormatTest, HandleConflictMarkers) {
22440   // Git/SVN conflict markers.
22441   EXPECT_EQ("int a;\n"
22442             "void f() {\n"
22443             "  callme(some(parameter1,\n"
22444             "<<<<<<< text by the vcs\n"
22445             "              parameter2),\n"
22446             "||||||| text by the vcs\n"
22447             "              parameter2),\n"
22448             "         parameter3,\n"
22449             "======= text by the vcs\n"
22450             "              parameter2, parameter3),\n"
22451             ">>>>>>> text by the vcs\n"
22452             "         otherparameter);\n",
22453             format("int a;\n"
22454                    "void f() {\n"
22455                    "  callme(some(parameter1,\n"
22456                    "<<<<<<< text by the vcs\n"
22457                    "  parameter2),\n"
22458                    "||||||| text by the vcs\n"
22459                    "  parameter2),\n"
22460                    "  parameter3,\n"
22461                    "======= text by the vcs\n"
22462                    "  parameter2,\n"
22463                    "  parameter3),\n"
22464                    ">>>>>>> text by the vcs\n"
22465                    "  otherparameter);\n"));
22466 
22467   // Perforce markers.
22468   EXPECT_EQ("void f() {\n"
22469             "  function(\n"
22470             ">>>> text by the vcs\n"
22471             "      parameter,\n"
22472             "==== text by the vcs\n"
22473             "      parameter,\n"
22474             "==== text by the vcs\n"
22475             "      parameter,\n"
22476             "<<<< text by the vcs\n"
22477             "      parameter);\n",
22478             format("void f() {\n"
22479                    "  function(\n"
22480                    ">>>> text by the vcs\n"
22481                    "  parameter,\n"
22482                    "==== text by the vcs\n"
22483                    "  parameter,\n"
22484                    "==== text by the vcs\n"
22485                    "  parameter,\n"
22486                    "<<<< text by the vcs\n"
22487                    "  parameter);\n"));
22488 
22489   EXPECT_EQ("<<<<<<<\n"
22490             "|||||||\n"
22491             "=======\n"
22492             ">>>>>>>",
22493             format("<<<<<<<\n"
22494                    "|||||||\n"
22495                    "=======\n"
22496                    ">>>>>>>"));
22497 
22498   EXPECT_EQ("<<<<<<<\n"
22499             "|||||||\n"
22500             "int i;\n"
22501             "=======\n"
22502             ">>>>>>>",
22503             format("<<<<<<<\n"
22504                    "|||||||\n"
22505                    "int i;\n"
22506                    "=======\n"
22507                    ">>>>>>>"));
22508 
22509   // FIXME: Handle parsing of macros around conflict markers correctly:
22510   EXPECT_EQ("#define Macro \\\n"
22511             "<<<<<<<\n"
22512             "Something \\\n"
22513             "|||||||\n"
22514             "Else \\\n"
22515             "=======\n"
22516             "Other \\\n"
22517             ">>>>>>>\n"
22518             "    End int i;\n",
22519             format("#define Macro \\\n"
22520                    "<<<<<<<\n"
22521                    "  Something \\\n"
22522                    "|||||||\n"
22523                    "  Else \\\n"
22524                    "=======\n"
22525                    "  Other \\\n"
22526                    ">>>>>>>\n"
22527                    "  End\n"
22528                    "int i;\n"));
22529 
22530   verifyFormat(R"(====
22531 #ifdef A
22532 a
22533 #else
22534 b
22535 #endif
22536 )");
22537 }
22538 
22539 TEST_F(FormatTest, DisableRegions) {
22540   EXPECT_EQ("int i;\n"
22541             "// clang-format off\n"
22542             "  int j;\n"
22543             "// clang-format on\n"
22544             "int k;",
22545             format(" int  i;\n"
22546                    "   // clang-format off\n"
22547                    "  int j;\n"
22548                    " // clang-format on\n"
22549                    "   int   k;"));
22550   EXPECT_EQ("int i;\n"
22551             "/* clang-format off */\n"
22552             "  int j;\n"
22553             "/* clang-format on */\n"
22554             "int k;",
22555             format(" int  i;\n"
22556                    "   /* clang-format off */\n"
22557                    "  int j;\n"
22558                    " /* clang-format on */\n"
22559                    "   int   k;"));
22560 
22561   // Don't reflow comments within disabled regions.
22562   EXPECT_EQ("// clang-format off\n"
22563             "// long long long long long long line\n"
22564             "/* clang-format on */\n"
22565             "/* long long long\n"
22566             " * long long long\n"
22567             " * line */\n"
22568             "int i;\n"
22569             "/* clang-format off */\n"
22570             "/* long long long long long long line */\n",
22571             format("// clang-format off\n"
22572                    "// long long long long long long line\n"
22573                    "/* clang-format on */\n"
22574                    "/* long long long long long long line */\n"
22575                    "int i;\n"
22576                    "/* clang-format off */\n"
22577                    "/* long long long long long long line */\n",
22578                    getLLVMStyleWithColumns(20)));
22579 }
22580 
22581 TEST_F(FormatTest, DoNotCrashOnInvalidInput) {
22582   format("? ) =");
22583   verifyNoCrash("#define a\\\n /**/}");
22584 }
22585 
22586 TEST_F(FormatTest, FormatsTableGenCode) {
22587   FormatStyle Style = getLLVMStyle();
22588   Style.Language = FormatStyle::LK_TableGen;
22589   verifyFormat("include \"a.td\"\ninclude \"b.td\"", Style);
22590 }
22591 
22592 TEST_F(FormatTest, ArrayOfTemplates) {
22593   EXPECT_EQ("auto a = new unique_ptr<int>[10];",
22594             format("auto a = new unique_ptr<int > [ 10];"));
22595 
22596   FormatStyle Spaces = getLLVMStyle();
22597   Spaces.SpacesInSquareBrackets = true;
22598   EXPECT_EQ("auto a = new unique_ptr<int>[ 10 ];",
22599             format("auto a = new unique_ptr<int > [10];", Spaces));
22600 }
22601 
22602 TEST_F(FormatTest, ArrayAsTemplateType) {
22603   EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[10]>;",
22604             format("auto a = unique_ptr < Foo < Bar>[ 10]> ;"));
22605 
22606   FormatStyle Spaces = getLLVMStyle();
22607   Spaces.SpacesInSquareBrackets = true;
22608   EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[ 10 ]>;",
22609             format("auto a = unique_ptr < Foo < Bar>[10]> ;", Spaces));
22610 }
22611 
22612 TEST_F(FormatTest, NoSpaceAfterSuper) { verifyFormat("__super::FooBar();"); }
22613 
22614 TEST(FormatStyle, GetStyleWithEmptyFileName) {
22615   llvm::vfs::InMemoryFileSystem FS;
22616   auto Style1 = getStyle("file", "", "Google", "", &FS);
22617   ASSERT_TRUE((bool)Style1);
22618   ASSERT_EQ(*Style1, getGoogleStyle());
22619 }
22620 
22621 TEST(FormatStyle, GetStyleOfFile) {
22622   llvm::vfs::InMemoryFileSystem FS;
22623   // Test 1: format file in the same directory.
22624   ASSERT_TRUE(
22625       FS.addFile("/a/.clang-format", 0,
22626                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM")));
22627   ASSERT_TRUE(
22628       FS.addFile("/a/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
22629   auto Style1 = getStyle("file", "/a/.clang-format", "Google", "", &FS);
22630   ASSERT_TRUE((bool)Style1);
22631   ASSERT_EQ(*Style1, getLLVMStyle());
22632 
22633   // Test 2.1: fallback to default.
22634   ASSERT_TRUE(
22635       FS.addFile("/b/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
22636   auto Style2 = getStyle("file", "/b/test.cpp", "Mozilla", "", &FS);
22637   ASSERT_TRUE((bool)Style2);
22638   ASSERT_EQ(*Style2, getMozillaStyle());
22639 
22640   // Test 2.2: no format on 'none' fallback style.
22641   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
22642   ASSERT_TRUE((bool)Style2);
22643   ASSERT_EQ(*Style2, getNoStyle());
22644 
22645   // Test 2.3: format if config is found with no based style while fallback is
22646   // 'none'.
22647   ASSERT_TRUE(FS.addFile("/b/.clang-format", 0,
22648                          llvm::MemoryBuffer::getMemBuffer("IndentWidth: 2")));
22649   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
22650   ASSERT_TRUE((bool)Style2);
22651   ASSERT_EQ(*Style2, getLLVMStyle());
22652 
22653   // Test 2.4: format if yaml with no based style, while fallback is 'none'.
22654   Style2 = getStyle("{}", "a.h", "none", "", &FS);
22655   ASSERT_TRUE((bool)Style2);
22656   ASSERT_EQ(*Style2, getLLVMStyle());
22657 
22658   // Test 3: format file in parent directory.
22659   ASSERT_TRUE(
22660       FS.addFile("/c/.clang-format", 0,
22661                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
22662   ASSERT_TRUE(FS.addFile("/c/sub/sub/sub/test.cpp", 0,
22663                          llvm::MemoryBuffer::getMemBuffer("int i;")));
22664   auto Style3 = getStyle("file", "/c/sub/sub/sub/test.cpp", "LLVM", "", &FS);
22665   ASSERT_TRUE((bool)Style3);
22666   ASSERT_EQ(*Style3, getGoogleStyle());
22667 
22668   // Test 4: error on invalid fallback style
22669   auto Style4 = getStyle("file", "a.h", "KungFu", "", &FS);
22670   ASSERT_FALSE((bool)Style4);
22671   llvm::consumeError(Style4.takeError());
22672 
22673   // Test 5: error on invalid yaml on command line
22674   auto Style5 = getStyle("{invalid_key=invalid_value}", "a.h", "LLVM", "", &FS);
22675   ASSERT_FALSE((bool)Style5);
22676   llvm::consumeError(Style5.takeError());
22677 
22678   // Test 6: error on invalid style
22679   auto Style6 = getStyle("KungFu", "a.h", "LLVM", "", &FS);
22680   ASSERT_FALSE((bool)Style6);
22681   llvm::consumeError(Style6.takeError());
22682 
22683   // Test 7: found config file, error on parsing it
22684   ASSERT_TRUE(
22685       FS.addFile("/d/.clang-format", 0,
22686                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM\n"
22687                                                   "InvalidKey: InvalidValue")));
22688   ASSERT_TRUE(
22689       FS.addFile("/d/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
22690   auto Style7a = getStyle("file", "/d/.clang-format", "LLVM", "", &FS);
22691   ASSERT_FALSE((bool)Style7a);
22692   llvm::consumeError(Style7a.takeError());
22693 
22694   auto Style7b = getStyle("file", "/d/.clang-format", "LLVM", "", &FS, true);
22695   ASSERT_TRUE((bool)Style7b);
22696 
22697   // Test 8: inferred per-language defaults apply.
22698   auto StyleTd = getStyle("file", "x.td", "llvm", "", &FS);
22699   ASSERT_TRUE((bool)StyleTd);
22700   ASSERT_EQ(*StyleTd, getLLVMStyle(FormatStyle::LK_TableGen));
22701 
22702   // Test 9.1.1: overwriting a file style, when no parent file exists with no
22703   // fallback style.
22704   ASSERT_TRUE(FS.addFile(
22705       "/e/sub/.clang-format", 0,
22706       llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: InheritParentConfig\n"
22707                                        "ColumnLimit: 20")));
22708   ASSERT_TRUE(FS.addFile("/e/sub/code.cpp", 0,
22709                          llvm::MemoryBuffer::getMemBuffer("int i;")));
22710   auto Style9 = getStyle("file", "/e/sub/code.cpp", "none", "", &FS);
22711   ASSERT_TRUE(static_cast<bool>(Style9));
22712   ASSERT_EQ(*Style9, [] {
22713     auto Style = getNoStyle();
22714     Style.ColumnLimit = 20;
22715     return Style;
22716   }());
22717 
22718   // Test 9.1.2: propagate more than one level with no parent file.
22719   ASSERT_TRUE(FS.addFile("/e/sub/sub/code.cpp", 0,
22720                          llvm::MemoryBuffer::getMemBuffer("int i;")));
22721   ASSERT_TRUE(FS.addFile("/e/sub/sub/.clang-format", 0,
22722                          llvm::MemoryBuffer::getMemBuffer(
22723                              "BasedOnStyle: InheritParentConfig\n"
22724                              "WhitespaceSensitiveMacros: ['FOO', 'BAR']")));
22725   std::vector<std::string> NonDefaultWhiteSpaceMacros{"FOO", "BAR"};
22726 
22727   ASSERT_NE(Style9->WhitespaceSensitiveMacros, NonDefaultWhiteSpaceMacros);
22728   Style9 = getStyle("file", "/e/sub/sub/code.cpp", "none", "", &FS);
22729   ASSERT_TRUE(static_cast<bool>(Style9));
22730   ASSERT_EQ(*Style9, [&NonDefaultWhiteSpaceMacros] {
22731     auto Style = getNoStyle();
22732     Style.ColumnLimit = 20;
22733     Style.WhitespaceSensitiveMacros = NonDefaultWhiteSpaceMacros;
22734     return Style;
22735   }());
22736 
22737   // Test 9.2: with LLVM fallback style
22738   Style9 = getStyle("file", "/e/sub/code.cpp", "LLVM", "", &FS);
22739   ASSERT_TRUE(static_cast<bool>(Style9));
22740   ASSERT_EQ(*Style9, [] {
22741     auto Style = getLLVMStyle();
22742     Style.ColumnLimit = 20;
22743     return Style;
22744   }());
22745 
22746   // Test 9.3: with a parent file
22747   ASSERT_TRUE(
22748       FS.addFile("/e/.clang-format", 0,
22749                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google\n"
22750                                                   "UseTab: Always")));
22751   Style9 = getStyle("file", "/e/sub/code.cpp", "none", "", &FS);
22752   ASSERT_TRUE(static_cast<bool>(Style9));
22753   ASSERT_EQ(*Style9, [] {
22754     auto Style = getGoogleStyle();
22755     Style.ColumnLimit = 20;
22756     Style.UseTab = FormatStyle::UT_Always;
22757     return Style;
22758   }());
22759 
22760   // Test 9.4: propagate more than one level with a parent file.
22761   const auto SubSubStyle = [&NonDefaultWhiteSpaceMacros] {
22762     auto Style = getGoogleStyle();
22763     Style.ColumnLimit = 20;
22764     Style.UseTab = FormatStyle::UT_Always;
22765     Style.WhitespaceSensitiveMacros = NonDefaultWhiteSpaceMacros;
22766     return Style;
22767   }();
22768 
22769   ASSERT_NE(Style9->WhitespaceSensitiveMacros, NonDefaultWhiteSpaceMacros);
22770   Style9 = getStyle("file", "/e/sub/sub/code.cpp", "none", "", &FS);
22771   ASSERT_TRUE(static_cast<bool>(Style9));
22772   ASSERT_EQ(*Style9, SubSubStyle);
22773 
22774   // Test 9.5: use InheritParentConfig as style name
22775   Style9 =
22776       getStyle("inheritparentconfig", "/e/sub/sub/code.cpp", "none", "", &FS);
22777   ASSERT_TRUE(static_cast<bool>(Style9));
22778   ASSERT_EQ(*Style9, SubSubStyle);
22779 
22780   // Test 9.6: use command line style with inheritance
22781   Style9 = getStyle("{BasedOnStyle: InheritParentConfig}", "/e/sub/code.cpp",
22782                     "none", "", &FS);
22783   ASSERT_TRUE(static_cast<bool>(Style9));
22784   ASSERT_EQ(*Style9, SubSubStyle);
22785 
22786   // Test 9.7: use command line style with inheritance and own config
22787   Style9 = getStyle("{BasedOnStyle: InheritParentConfig, "
22788                     "WhitespaceSensitiveMacros: ['FOO', 'BAR']}",
22789                     "/e/sub/code.cpp", "none", "", &FS);
22790   ASSERT_TRUE(static_cast<bool>(Style9));
22791   ASSERT_EQ(*Style9, SubSubStyle);
22792 
22793   // Test 9.8: use inheritance from a file without BasedOnStyle
22794   ASSERT_TRUE(FS.addFile("/e/withoutbase/.clang-format", 0,
22795                          llvm::MemoryBuffer::getMemBuffer("ColumnLimit: 123")));
22796   ASSERT_TRUE(
22797       FS.addFile("/e/withoutbase/sub/.clang-format", 0,
22798                  llvm::MemoryBuffer::getMemBuffer(
22799                      "BasedOnStyle: InheritParentConfig\nIndentWidth: 7")));
22800   // Make sure we do not use the fallback style
22801   Style9 = getStyle("file", "/e/withoutbase/code.cpp", "google", "", &FS);
22802   ASSERT_TRUE(static_cast<bool>(Style9));
22803   ASSERT_EQ(*Style9, [] {
22804     auto Style = getLLVMStyle();
22805     Style.ColumnLimit = 123;
22806     return Style;
22807   }());
22808 
22809   Style9 = getStyle("file", "/e/withoutbase/sub/code.cpp", "google", "", &FS);
22810   ASSERT_TRUE(static_cast<bool>(Style9));
22811   ASSERT_EQ(*Style9, [] {
22812     auto Style = getLLVMStyle();
22813     Style.ColumnLimit = 123;
22814     Style.IndentWidth = 7;
22815     return Style;
22816   }());
22817 
22818   // Test 9.9: use inheritance from a specific config file.
22819   Style9 = getStyle("file:/e/sub/sub/.clang-format", "/e/sub/sub/code.cpp",
22820                     "none", "", &FS);
22821   ASSERT_TRUE(static_cast<bool>(Style9));
22822   ASSERT_EQ(*Style9, SubSubStyle);
22823 }
22824 
22825 TEST(FormatStyle, GetStyleOfSpecificFile) {
22826   llvm::vfs::InMemoryFileSystem FS;
22827   // Specify absolute path to a format file in a parent directory.
22828   ASSERT_TRUE(
22829       FS.addFile("/e/.clang-format", 0,
22830                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM")));
22831   ASSERT_TRUE(
22832       FS.addFile("/e/explicit.clang-format", 0,
22833                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
22834   ASSERT_TRUE(FS.addFile("/e/sub/sub/sub/test.cpp", 0,
22835                          llvm::MemoryBuffer::getMemBuffer("int i;")));
22836   auto Style = getStyle("file:/e/explicit.clang-format",
22837                         "/e/sub/sub/sub/test.cpp", "LLVM", "", &FS);
22838   ASSERT_TRUE(static_cast<bool>(Style));
22839   ASSERT_EQ(*Style, getGoogleStyle());
22840 
22841   // Specify relative path to a format file.
22842   ASSERT_TRUE(
22843       FS.addFile("../../e/explicit.clang-format", 0,
22844                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
22845   Style = getStyle("file:../../e/explicit.clang-format",
22846                    "/e/sub/sub/sub/test.cpp", "LLVM", "", &FS);
22847   ASSERT_TRUE(static_cast<bool>(Style));
22848   ASSERT_EQ(*Style, getGoogleStyle());
22849 
22850   // Specify path to a format file that does not exist.
22851   Style = getStyle("file:/e/missing.clang-format", "/e/sub/sub/sub/test.cpp",
22852                    "LLVM", "", &FS);
22853   ASSERT_FALSE(static_cast<bool>(Style));
22854   llvm::consumeError(Style.takeError());
22855 
22856   // Specify path to a file on the filesystem.
22857   SmallString<128> FormatFilePath;
22858   std::error_code ECF = llvm::sys::fs::createTemporaryFile(
22859       "FormatFileTest", "tpl", FormatFilePath);
22860   EXPECT_FALSE((bool)ECF);
22861   llvm::raw_fd_ostream FormatFileTest(FormatFilePath, ECF);
22862   EXPECT_FALSE((bool)ECF);
22863   FormatFileTest << "BasedOnStyle: Google\n";
22864   FormatFileTest.close();
22865 
22866   SmallString<128> TestFilePath;
22867   std::error_code ECT =
22868       llvm::sys::fs::createTemporaryFile("CodeFileTest", "cc", TestFilePath);
22869   EXPECT_FALSE((bool)ECT);
22870   llvm::raw_fd_ostream CodeFileTest(TestFilePath, ECT);
22871   CodeFileTest << "int i;\n";
22872   CodeFileTest.close();
22873 
22874   std::string format_file_arg = std::string("file:") + FormatFilePath.c_str();
22875   Style = getStyle(format_file_arg, TestFilePath, "LLVM", "", nullptr);
22876 
22877   llvm::sys::fs::remove(FormatFilePath.c_str());
22878   llvm::sys::fs::remove(TestFilePath.c_str());
22879   ASSERT_TRUE(static_cast<bool>(Style));
22880   ASSERT_EQ(*Style, getGoogleStyle());
22881 }
22882 
22883 TEST_F(ReplacementTest, FormatCodeAfterReplacements) {
22884   // Column limit is 20.
22885   std::string Code = "Type *a =\n"
22886                      "    new Type();\n"
22887                      "g(iiiii, 0, jjjjj,\n"
22888                      "  0, kkkkk, 0, mm);\n"
22889                      "int  bad     = format   ;";
22890   std::string Expected = "auto a = new Type();\n"
22891                          "g(iiiii, nullptr,\n"
22892                          "  jjjjj, nullptr,\n"
22893                          "  kkkkk, nullptr,\n"
22894                          "  mm);\n"
22895                          "int  bad     = format   ;";
22896   FileID ID = Context.createInMemoryFile("format.cpp", Code);
22897   tooling::Replacements Replaces = toReplacements(
22898       {tooling::Replacement(Context.Sources, Context.getLocation(ID, 1, 1), 6,
22899                             "auto "),
22900        tooling::Replacement(Context.Sources, Context.getLocation(ID, 3, 10), 1,
22901                             "nullptr"),
22902        tooling::Replacement(Context.Sources, Context.getLocation(ID, 4, 3), 1,
22903                             "nullptr"),
22904        tooling::Replacement(Context.Sources, Context.getLocation(ID, 4, 13), 1,
22905                             "nullptr")});
22906 
22907   FormatStyle Style = getLLVMStyle();
22908   Style.ColumnLimit = 20; // Set column limit to 20 to increase readibility.
22909   auto FormattedReplaces = formatReplacements(Code, Replaces, Style);
22910   EXPECT_TRUE(static_cast<bool>(FormattedReplaces))
22911       << llvm::toString(FormattedReplaces.takeError()) << "\n";
22912   auto Result = applyAllReplacements(Code, *FormattedReplaces);
22913   EXPECT_TRUE(static_cast<bool>(Result));
22914   EXPECT_EQ(Expected, *Result);
22915 }
22916 
22917 TEST_F(ReplacementTest, SortIncludesAfterReplacement) {
22918   std::string Code = "#include \"a.h\"\n"
22919                      "#include \"c.h\"\n"
22920                      "\n"
22921                      "int main() {\n"
22922                      "  return 0;\n"
22923                      "}";
22924   std::string Expected = "#include \"a.h\"\n"
22925                          "#include \"b.h\"\n"
22926                          "#include \"c.h\"\n"
22927                          "\n"
22928                          "int main() {\n"
22929                          "  return 0;\n"
22930                          "}";
22931   FileID ID = Context.createInMemoryFile("fix.cpp", Code);
22932   tooling::Replacements Replaces = toReplacements(
22933       {tooling::Replacement(Context.Sources, Context.getLocation(ID, 1, 1), 0,
22934                             "#include \"b.h\"\n")});
22935 
22936   FormatStyle Style = getLLVMStyle();
22937   Style.SortIncludes = FormatStyle::SI_CaseSensitive;
22938   auto FormattedReplaces = formatReplacements(Code, Replaces, Style);
22939   EXPECT_TRUE(static_cast<bool>(FormattedReplaces))
22940       << llvm::toString(FormattedReplaces.takeError()) << "\n";
22941   auto Result = applyAllReplacements(Code, *FormattedReplaces);
22942   EXPECT_TRUE(static_cast<bool>(Result));
22943   EXPECT_EQ(Expected, *Result);
22944 }
22945 
22946 TEST_F(FormatTest, FormatSortsUsingDeclarations) {
22947   EXPECT_EQ("using std::cin;\n"
22948             "using std::cout;",
22949             format("using std::cout;\n"
22950                    "using std::cin;",
22951                    getGoogleStyle()));
22952 }
22953 
22954 TEST_F(FormatTest, UTF8CharacterLiteralCpp03) {
22955   FormatStyle Style = getLLVMStyle();
22956   Style.Standard = FormatStyle::LS_Cpp03;
22957   // cpp03 recognize this string as identifier u8 and literal character 'a'
22958   EXPECT_EQ("auto c = u8 'a';", format("auto c = u8'a';", Style));
22959 }
22960 
22961 TEST_F(FormatTest, UTF8CharacterLiteralCpp11) {
22962   // u8'a' is a C++17 feature, utf8 literal character, LS_Cpp11 covers
22963   // all modes, including C++11, C++14 and C++17
22964   EXPECT_EQ("auto c = u8'a';", format("auto c = u8'a';"));
22965 }
22966 
22967 TEST_F(FormatTest, DoNotFormatLikelyXml) {
22968   EXPECT_EQ("<!-- ;> -->", format("<!-- ;> -->", getGoogleStyle()));
22969   EXPECT_EQ(" <!-- >; -->", format(" <!-- >; -->", getGoogleStyle()));
22970 }
22971 
22972 TEST_F(FormatTest, StructuredBindings) {
22973   // Structured bindings is a C++17 feature.
22974   // all modes, including C++11, C++14 and C++17
22975   verifyFormat("auto [a, b] = f();");
22976   EXPECT_EQ("auto [a, b] = f();", format("auto[a, b] = f();"));
22977   EXPECT_EQ("const auto [a, b] = f();", format("const   auto[a, b] = f();"));
22978   EXPECT_EQ("auto const [a, b] = f();", format("auto  const[a, b] = f();"));
22979   EXPECT_EQ("auto const volatile [a, b] = f();",
22980             format("auto  const   volatile[a, b] = f();"));
22981   EXPECT_EQ("auto [a, b, c] = f();", format("auto   [  a  ,  b,c   ] = f();"));
22982   EXPECT_EQ("auto &[a, b, c] = f();",
22983             format("auto   &[  a  ,  b,c   ] = f();"));
22984   EXPECT_EQ("auto &&[a, b, c] = f();",
22985             format("auto   &&[  a  ,  b,c   ] = f();"));
22986   EXPECT_EQ("auto const &[a, b] = f();", format("auto  const&[a, b] = f();"));
22987   EXPECT_EQ("auto const volatile &&[a, b] = f();",
22988             format("auto  const  volatile  &&[a, b] = f();"));
22989   EXPECT_EQ("auto const &&[a, b] = f();",
22990             format("auto  const   &&  [a, b] = f();"));
22991   EXPECT_EQ("const auto &[a, b] = f();",
22992             format("const  auto  &  [a, b] = f();"));
22993   EXPECT_EQ("const auto volatile &&[a, b] = f();",
22994             format("const  auto   volatile  &&[a, b] = f();"));
22995   EXPECT_EQ("volatile const auto &&[a, b] = f();",
22996             format("volatile  const  auto   &&[a, b] = f();"));
22997   EXPECT_EQ("const auto &&[a, b] = f();",
22998             format("const  auto  &&  [a, b] = f();"));
22999 
23000   // Make sure we don't mistake structured bindings for lambdas.
23001   FormatStyle PointerMiddle = getLLVMStyle();
23002   PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle;
23003   verifyFormat("auto [a1, b]{A * i};", getGoogleStyle());
23004   verifyFormat("auto [a2, b]{A * i};", getLLVMStyle());
23005   verifyFormat("auto [a3, b]{A * i};", PointerMiddle);
23006   verifyFormat("auto const [a1, b]{A * i};", getGoogleStyle());
23007   verifyFormat("auto const [a2, b]{A * i};", getLLVMStyle());
23008   verifyFormat("auto const [a3, b]{A * i};", PointerMiddle);
23009   verifyFormat("auto const& [a1, b]{A * i};", getGoogleStyle());
23010   verifyFormat("auto const &[a2, b]{A * i};", getLLVMStyle());
23011   verifyFormat("auto const & [a3, b]{A * i};", PointerMiddle);
23012   verifyFormat("auto const&& [a1, b]{A * i};", getGoogleStyle());
23013   verifyFormat("auto const &&[a2, b]{A * i};", getLLVMStyle());
23014   verifyFormat("auto const && [a3, b]{A * i};", PointerMiddle);
23015 
23016   EXPECT_EQ("for (const auto &&[a, b] : some_range) {\n}",
23017             format("for (const auto   &&   [a, b] : some_range) {\n}"));
23018   EXPECT_EQ("for (const auto &[a, b] : some_range) {\n}",
23019             format("for (const auto   &   [a, b] : some_range) {\n}"));
23020   EXPECT_EQ("for (const auto [a, b] : some_range) {\n}",
23021             format("for (const auto[a, b] : some_range) {\n}"));
23022   EXPECT_EQ("auto [x, y](expr);", format("auto[x,y]  (expr);"));
23023   EXPECT_EQ("auto &[x, y](expr);", format("auto  &  [x,y]  (expr);"));
23024   EXPECT_EQ("auto &&[x, y](expr);", format("auto  &&  [x,y]  (expr);"));
23025   EXPECT_EQ("auto const &[x, y](expr);",
23026             format("auto  const  &  [x,y]  (expr);"));
23027   EXPECT_EQ("auto const &&[x, y](expr);",
23028             format("auto  const  &&  [x,y]  (expr);"));
23029   EXPECT_EQ("auto [x, y]{expr};", format("auto[x,y]     {expr};"));
23030   EXPECT_EQ("auto const &[x, y]{expr};",
23031             format("auto  const  &  [x,y]  {expr};"));
23032   EXPECT_EQ("auto const &&[x, y]{expr};",
23033             format("auto  const  &&  [x,y]  {expr};"));
23034 
23035   FormatStyle Spaces = getLLVMStyle();
23036   Spaces.SpacesInSquareBrackets = true;
23037   verifyFormat("auto [ a, b ] = f();", Spaces);
23038   verifyFormat("auto &&[ a, b ] = f();", Spaces);
23039   verifyFormat("auto &[ a, b ] = f();", Spaces);
23040   verifyFormat("auto const &&[ a, b ] = f();", Spaces);
23041   verifyFormat("auto const &[ a, b ] = f();", Spaces);
23042 }
23043 
23044 TEST_F(FormatTest, FileAndCode) {
23045   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.cc", ""));
23046   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.m", ""));
23047   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.mm", ""));
23048   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", ""));
23049   EXPECT_EQ(FormatStyle::LK_ObjC,
23050             guessLanguage("foo.h", "@interface Foo\n@end\n"));
23051   EXPECT_EQ(
23052       FormatStyle::LK_ObjC,
23053       guessLanguage("foo.h", "#define TRY(x, y) @try { x; } @finally { y; }"));
23054   EXPECT_EQ(FormatStyle::LK_ObjC,
23055             guessLanguage("foo.h", "#define AVAIL(x) @available(x, *))"));
23056   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.h", "@class Foo;"));
23057   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo", ""));
23058   EXPECT_EQ(FormatStyle::LK_ObjC,
23059             guessLanguage("foo", "@interface Foo\n@end\n"));
23060   EXPECT_EQ(FormatStyle::LK_ObjC,
23061             guessLanguage("foo.h", "int DoStuff(CGRect rect);\n"));
23062   EXPECT_EQ(
23063       FormatStyle::LK_ObjC,
23064       guessLanguage("foo.h",
23065                     "#define MY_POINT_MAKE(x, y) CGPointMake((x), (y));\n"));
23066   EXPECT_EQ(
23067       FormatStyle::LK_Cpp,
23068       guessLanguage("foo.h", "#define FOO(...) auto bar = [] __VA_ARGS__;"));
23069   // Only one of the two preprocessor regions has ObjC-like code.
23070   EXPECT_EQ(FormatStyle::LK_ObjC,
23071             guessLanguage("foo.h", "#if A\n"
23072                                    "#define B() C\n"
23073                                    "#else\n"
23074                                    "#define B() [NSString a:@\"\"]\n"
23075                                    "#endif\n"));
23076 }
23077 
23078 TEST_F(FormatTest, GuessLanguageWithCpp11AttributeSpecifiers) {
23079   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "[[noreturn]];"));
23080   EXPECT_EQ(FormatStyle::LK_ObjC,
23081             guessLanguage("foo.h", "array[[calculator getIndex]];"));
23082   EXPECT_EQ(FormatStyle::LK_Cpp,
23083             guessLanguage("foo.h", "[[noreturn, deprecated(\"so sorry\")]];"));
23084   EXPECT_EQ(
23085       FormatStyle::LK_Cpp,
23086       guessLanguage("foo.h", "[[noreturn, deprecated(\"gone, sorry\")]];"));
23087   EXPECT_EQ(FormatStyle::LK_ObjC,
23088             guessLanguage("foo.h", "[[noreturn foo] bar];"));
23089   EXPECT_EQ(FormatStyle::LK_Cpp,
23090             guessLanguage("foo.h", "[[clang::fallthrough]];"));
23091   EXPECT_EQ(FormatStyle::LK_ObjC,
23092             guessLanguage("foo.h", "[[clang:fallthrough] foo];"));
23093   EXPECT_EQ(FormatStyle::LK_Cpp,
23094             guessLanguage("foo.h", "[[gsl::suppress(\"type\")]];"));
23095   EXPECT_EQ(FormatStyle::LK_Cpp,
23096             guessLanguage("foo.h", "[[using clang: fallthrough]];"));
23097   EXPECT_EQ(FormatStyle::LK_ObjC,
23098             guessLanguage("foo.h", "[[abusing clang:fallthrough] bar];"));
23099   EXPECT_EQ(FormatStyle::LK_Cpp,
23100             guessLanguage("foo.h", "[[using gsl: suppress(\"type\")]];"));
23101   EXPECT_EQ(
23102       FormatStyle::LK_Cpp,
23103       guessLanguage("foo.h", "for (auto &&[endpoint, stream] : streams_)"));
23104   EXPECT_EQ(
23105       FormatStyle::LK_Cpp,
23106       guessLanguage("foo.h",
23107                     "[[clang::callable_when(\"unconsumed\", \"unknown\")]]"));
23108   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "[[foo::bar, ...]]"));
23109 }
23110 
23111 TEST_F(FormatTest, GuessLanguageWithCaret) {
23112   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "FOO(^);"));
23113   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "FOO(^, Bar);"));
23114   EXPECT_EQ(FormatStyle::LK_ObjC,
23115             guessLanguage("foo.h", "int(^)(char, float);"));
23116   EXPECT_EQ(FormatStyle::LK_ObjC,
23117             guessLanguage("foo.h", "int(^foo)(char, float);"));
23118   EXPECT_EQ(FormatStyle::LK_ObjC,
23119             guessLanguage("foo.h", "int(^foo[10])(char, float);"));
23120   EXPECT_EQ(FormatStyle::LK_ObjC,
23121             guessLanguage("foo.h", "int(^foo[kNumEntries])(char, float);"));
23122   EXPECT_EQ(
23123       FormatStyle::LK_ObjC,
23124       guessLanguage("foo.h", "int(^foo[(kNumEntries + 10)])(char, float);"));
23125 }
23126 
23127 TEST_F(FormatTest, GuessLanguageWithPragmas) {
23128   EXPECT_EQ(FormatStyle::LK_Cpp,
23129             guessLanguage("foo.h", "__pragma(warning(disable:))"));
23130   EXPECT_EQ(FormatStyle::LK_Cpp,
23131             guessLanguage("foo.h", "#pragma(warning(disable:))"));
23132   EXPECT_EQ(FormatStyle::LK_Cpp,
23133             guessLanguage("foo.h", "_Pragma(warning(disable:))"));
23134 }
23135 
23136 TEST_F(FormatTest, FormatsInlineAsmSymbolicNames) {
23137   // ASM symbolic names are identifiers that must be surrounded by [] without
23138   // space in between:
23139   // https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html#InputOperands
23140 
23141   // Example from https://bugs.llvm.org/show_bug.cgi?id=45108.
23142   verifyFormat(R"(//
23143 asm volatile("mrs %x[result], FPCR" : [result] "=r"(result));
23144 )");
23145 
23146   // A list of several ASM symbolic names.
23147   verifyFormat(R"(asm("mov %[e], %[d]" : [d] "=rm"(d), [e] "rm"(*e));)");
23148 
23149   // ASM symbolic names in inline ASM with inputs and outputs.
23150   verifyFormat(R"(//
23151 asm("cmoveq %1, %2, %[result]"
23152     : [result] "=r"(result)
23153     : "r"(test), "r"(new), "[result]"(old));
23154 )");
23155 
23156   // ASM symbolic names in inline ASM with no outputs.
23157   verifyFormat(R"(asm("mov %[e], %[d]" : : [d] "=rm"(d), [e] "rm"(*e));)");
23158 }
23159 
23160 TEST_F(FormatTest, GuessedLanguageWithInlineAsmClobbers) {
23161   EXPECT_EQ(FormatStyle::LK_Cpp,
23162             guessLanguage("foo.h", "void f() {\n"
23163                                    "  asm (\"mov %[e], %[d]\"\n"
23164                                    "     : [d] \"=rm\" (d)\n"
23165                                    "       [e] \"rm\" (*e));\n"
23166                                    "}"));
23167   EXPECT_EQ(FormatStyle::LK_Cpp,
23168             guessLanguage("foo.h", "void f() {\n"
23169                                    "  _asm (\"mov %[e], %[d]\"\n"
23170                                    "     : [d] \"=rm\" (d)\n"
23171                                    "       [e] \"rm\" (*e));\n"
23172                                    "}"));
23173   EXPECT_EQ(FormatStyle::LK_Cpp,
23174             guessLanguage("foo.h", "void f() {\n"
23175                                    "  __asm (\"mov %[e], %[d]\"\n"
23176                                    "     : [d] \"=rm\" (d)\n"
23177                                    "       [e] \"rm\" (*e));\n"
23178                                    "}"));
23179   EXPECT_EQ(FormatStyle::LK_Cpp,
23180             guessLanguage("foo.h", "void f() {\n"
23181                                    "  __asm__ (\"mov %[e], %[d]\"\n"
23182                                    "     : [d] \"=rm\" (d)\n"
23183                                    "       [e] \"rm\" (*e));\n"
23184                                    "}"));
23185   EXPECT_EQ(FormatStyle::LK_Cpp,
23186             guessLanguage("foo.h", "void f() {\n"
23187                                    "  asm (\"mov %[e], %[d]\"\n"
23188                                    "     : [d] \"=rm\" (d),\n"
23189                                    "       [e] \"rm\" (*e));\n"
23190                                    "}"));
23191   EXPECT_EQ(FormatStyle::LK_Cpp,
23192             guessLanguage("foo.h", "void f() {\n"
23193                                    "  asm volatile (\"mov %[e], %[d]\"\n"
23194                                    "     : [d] \"=rm\" (d)\n"
23195                                    "       [e] \"rm\" (*e));\n"
23196                                    "}"));
23197 }
23198 
23199 TEST_F(FormatTest, GuessLanguageWithChildLines) {
23200   EXPECT_EQ(FormatStyle::LK_Cpp,
23201             guessLanguage("foo.h", "#define FOO ({ std::string s; })"));
23202   EXPECT_EQ(FormatStyle::LK_ObjC,
23203             guessLanguage("foo.h", "#define FOO ({ NSString *s; })"));
23204   EXPECT_EQ(
23205       FormatStyle::LK_Cpp,
23206       guessLanguage("foo.h", "#define FOO ({ foo(); ({ std::string s; }) })"));
23207   EXPECT_EQ(
23208       FormatStyle::LK_ObjC,
23209       guessLanguage("foo.h", "#define FOO ({ foo(); ({ NSString *s; }) })"));
23210 }
23211 
23212 TEST_F(FormatTest, TypenameMacros) {
23213   std::vector<std::string> TypenameMacros = {"STACK_OF", "LIST", "TAILQ_ENTRY"};
23214 
23215   // Test case reported in https://bugs.llvm.org/show_bug.cgi?id=30353
23216   FormatStyle Google = getGoogleStyleWithColumns(0);
23217   Google.TypenameMacros = TypenameMacros;
23218   verifyFormat("struct foo {\n"
23219                "  int bar;\n"
23220                "  TAILQ_ENTRY(a) bleh;\n"
23221                "};",
23222                Google);
23223 
23224   FormatStyle Macros = getLLVMStyle();
23225   Macros.TypenameMacros = TypenameMacros;
23226 
23227   verifyFormat("STACK_OF(int) a;", Macros);
23228   verifyFormat("STACK_OF(int) *a;", Macros);
23229   verifyFormat("STACK_OF(int const *) *a;", Macros);
23230   verifyFormat("STACK_OF(int *const) *a;", Macros);
23231   verifyFormat("STACK_OF(int, string) a;", Macros);
23232   verifyFormat("STACK_OF(LIST(int)) a;", Macros);
23233   verifyFormat("STACK_OF(LIST(int)) a, b;", Macros);
23234   verifyFormat("for (LIST(int) *a = NULL; a;) {\n}", Macros);
23235   verifyFormat("STACK_OF(int) f(LIST(int) *arg);", Macros);
23236   verifyFormat("vector<LIST(uint64_t) *attr> x;", Macros);
23237   verifyFormat("vector<LIST(uint64_t) *const> f(LIST(uint64_t) *arg);", Macros);
23238 
23239   Macros.PointerAlignment = FormatStyle::PAS_Left;
23240   verifyFormat("STACK_OF(int)* a;", Macros);
23241   verifyFormat("STACK_OF(int*)* a;", Macros);
23242   verifyFormat("x = (STACK_OF(uint64_t))*a;", Macros);
23243   verifyFormat("x = (STACK_OF(uint64_t))&a;", Macros);
23244   verifyFormat("vector<STACK_OF(uint64_t)* attr> x;", Macros);
23245 }
23246 
23247 TEST_F(FormatTest, AtomicQualifier) {
23248   // Check that we treate _Atomic as a type and not a function call
23249   FormatStyle Google = getGoogleStyleWithColumns(0);
23250   verifyFormat("struct foo {\n"
23251                "  int a1;\n"
23252                "  _Atomic(a) a2;\n"
23253                "  _Atomic(_Atomic(int) *const) a3;\n"
23254                "};",
23255                Google);
23256   verifyFormat("_Atomic(uint64_t) a;");
23257   verifyFormat("_Atomic(uint64_t) *a;");
23258   verifyFormat("_Atomic(uint64_t const *) *a;");
23259   verifyFormat("_Atomic(uint64_t *const) *a;");
23260   verifyFormat("_Atomic(const uint64_t *) *a;");
23261   verifyFormat("_Atomic(uint64_t) a;");
23262   verifyFormat("_Atomic(_Atomic(uint64_t)) a;");
23263   verifyFormat("_Atomic(_Atomic(uint64_t)) a, b;");
23264   verifyFormat("for (_Atomic(uint64_t) *a = NULL; a;) {\n}");
23265   verifyFormat("_Atomic(uint64_t) f(_Atomic(uint64_t) *arg);");
23266 
23267   verifyFormat("_Atomic(uint64_t) *s(InitValue);");
23268   verifyFormat("_Atomic(uint64_t) *s{InitValue};");
23269   FormatStyle Style = getLLVMStyle();
23270   Style.PointerAlignment = FormatStyle::PAS_Left;
23271   verifyFormat("_Atomic(uint64_t)* s(InitValue);", Style);
23272   verifyFormat("_Atomic(uint64_t)* s{InitValue};", Style);
23273   verifyFormat("_Atomic(int)* a;", Style);
23274   verifyFormat("_Atomic(int*)* a;", Style);
23275   verifyFormat("vector<_Atomic(uint64_t)* attr> x;", Style);
23276 
23277   Style.SpacesInCStyleCastParentheses = true;
23278   Style.SpacesInParentheses = false;
23279   verifyFormat("x = ( _Atomic(uint64_t) )*a;", Style);
23280   Style.SpacesInCStyleCastParentheses = false;
23281   Style.SpacesInParentheses = true;
23282   verifyFormat("x = (_Atomic( uint64_t ))*a;", Style);
23283   verifyFormat("x = (_Atomic( uint64_t ))&a;", Style);
23284 }
23285 
23286 TEST_F(FormatTest, AmbersandInLamda) {
23287   // Test case reported in https://bugs.llvm.org/show_bug.cgi?id=41899
23288   FormatStyle AlignStyle = getLLVMStyle();
23289   AlignStyle.PointerAlignment = FormatStyle::PAS_Left;
23290   verifyFormat("auto lambda = [&a = a]() { a = 2; };", AlignStyle);
23291   AlignStyle.PointerAlignment = FormatStyle::PAS_Right;
23292   verifyFormat("auto lambda = [&a = a]() { a = 2; };", AlignStyle);
23293 }
23294 
23295 TEST_F(FormatTest, SpacesInConditionalStatement) {
23296   FormatStyle Spaces = getLLVMStyle();
23297   Spaces.IfMacros.clear();
23298   Spaces.IfMacros.push_back("MYIF");
23299   Spaces.SpacesInConditionalStatement = true;
23300   verifyFormat("for ( int i = 0; i; i++ )\n  continue;", Spaces);
23301   verifyFormat("if ( !a )\n  return;", Spaces);
23302   verifyFormat("if ( a )\n  return;", Spaces);
23303   verifyFormat("if constexpr ( a )\n  return;", Spaces);
23304   verifyFormat("MYIF ( a )\n  return;", Spaces);
23305   verifyFormat("MYIF ( a )\n  return;\nelse MYIF ( b )\n  return;", Spaces);
23306   verifyFormat("MYIF ( a )\n  return;\nelse\n  return;", Spaces);
23307   verifyFormat("switch ( a )\ncase 1:\n  return;", Spaces);
23308   verifyFormat("while ( a )\n  return;", Spaces);
23309   verifyFormat("while ( (a && b) )\n  return;", Spaces);
23310   verifyFormat("do {\n} while ( 1 != 0 );", Spaces);
23311   verifyFormat("try {\n} catch ( const std::exception & ) {\n}", Spaces);
23312   // Check that space on the left of "::" is inserted as expected at beginning
23313   // of condition.
23314   verifyFormat("while ( ::func() )\n  return;", Spaces);
23315 
23316   // Check impact of ControlStatementsExceptControlMacros is honored.
23317   Spaces.SpaceBeforeParens =
23318       FormatStyle::SBPO_ControlStatementsExceptControlMacros;
23319   verifyFormat("MYIF( a )\n  return;", Spaces);
23320   verifyFormat("MYIF( a )\n  return;\nelse MYIF( b )\n  return;", Spaces);
23321   verifyFormat("MYIF( a )\n  return;\nelse\n  return;", Spaces);
23322 }
23323 
23324 TEST_F(FormatTest, AlternativeOperators) {
23325   // Test case for ensuring alternate operators are not
23326   // combined with their right most neighbour.
23327   verifyFormat("int a and b;");
23328   verifyFormat("int a and_eq b;");
23329   verifyFormat("int a bitand b;");
23330   verifyFormat("int a bitor b;");
23331   verifyFormat("int a compl b;");
23332   verifyFormat("int a not b;");
23333   verifyFormat("int a not_eq b;");
23334   verifyFormat("int a or b;");
23335   verifyFormat("int a xor b;");
23336   verifyFormat("int a xor_eq b;");
23337   verifyFormat("return this not_eq bitand other;");
23338   verifyFormat("bool operator not_eq(const X bitand other)");
23339 
23340   verifyFormat("int a and 5;");
23341   verifyFormat("int a and_eq 5;");
23342   verifyFormat("int a bitand 5;");
23343   verifyFormat("int a bitor 5;");
23344   verifyFormat("int a compl 5;");
23345   verifyFormat("int a not 5;");
23346   verifyFormat("int a not_eq 5;");
23347   verifyFormat("int a or 5;");
23348   verifyFormat("int a xor 5;");
23349   verifyFormat("int a xor_eq 5;");
23350 
23351   verifyFormat("int a compl(5);");
23352   verifyFormat("int a not(5);");
23353 
23354   /* FIXME handle alternate tokens
23355    * https://en.cppreference.com/w/cpp/language/operator_alternative
23356   // alternative tokens
23357   verifyFormat("compl foo();");     //  ~foo();
23358   verifyFormat("foo() <%%>;");      // foo();
23359   verifyFormat("void foo() <%%>;"); // void foo(){}
23360   verifyFormat("int a <:1:>;");     // int a[1];[
23361   verifyFormat("%:define ABC abc"); // #define ABC abc
23362   verifyFormat("%:%:");             // ##
23363   */
23364 }
23365 
23366 TEST_F(FormatTest, STLWhileNotDefineChed) {
23367   verifyFormat("#if defined(while)\n"
23368                "#define while EMIT WARNING C4005\n"
23369                "#endif // while");
23370 }
23371 
23372 TEST_F(FormatTest, OperatorSpacing) {
23373   FormatStyle Style = getLLVMStyle();
23374   Style.PointerAlignment = FormatStyle::PAS_Right;
23375   verifyFormat("Foo::operator*();", Style);
23376   verifyFormat("Foo::operator void *();", Style);
23377   verifyFormat("Foo::operator void **();", Style);
23378   verifyFormat("Foo::operator void *&();", Style);
23379   verifyFormat("Foo::operator void *&&();", Style);
23380   verifyFormat("Foo::operator void const *();", Style);
23381   verifyFormat("Foo::operator void const **();", Style);
23382   verifyFormat("Foo::operator void const *&();", Style);
23383   verifyFormat("Foo::operator void const *&&();", Style);
23384   verifyFormat("Foo::operator()(void *);", Style);
23385   verifyFormat("Foo::operator*(void *);", Style);
23386   verifyFormat("Foo::operator*();", Style);
23387   verifyFormat("Foo::operator**();", Style);
23388   verifyFormat("Foo::operator&();", Style);
23389   verifyFormat("Foo::operator<int> *();", Style);
23390   verifyFormat("Foo::operator<Foo> *();", Style);
23391   verifyFormat("Foo::operator<int> **();", Style);
23392   verifyFormat("Foo::operator<Foo> **();", Style);
23393   verifyFormat("Foo::operator<int> &();", Style);
23394   verifyFormat("Foo::operator<Foo> &();", Style);
23395   verifyFormat("Foo::operator<int> &&();", Style);
23396   verifyFormat("Foo::operator<Foo> &&();", Style);
23397   verifyFormat("Foo::operator<int> *&();", Style);
23398   verifyFormat("Foo::operator<Foo> *&();", Style);
23399   verifyFormat("Foo::operator<int> *&&();", Style);
23400   verifyFormat("Foo::operator<Foo> *&&();", Style);
23401   verifyFormat("operator*(int (*)(), class Foo);", Style);
23402 
23403   verifyFormat("Foo::operator&();", Style);
23404   verifyFormat("Foo::operator void &();", Style);
23405   verifyFormat("Foo::operator void const &();", Style);
23406   verifyFormat("Foo::operator()(void &);", Style);
23407   verifyFormat("Foo::operator&(void &);", Style);
23408   verifyFormat("Foo::operator&();", Style);
23409   verifyFormat("operator&(int (&)(), class Foo);", Style);
23410   verifyFormat("operator&&(int (&)(), class Foo);", Style);
23411 
23412   verifyFormat("Foo::operator&&();", Style);
23413   verifyFormat("Foo::operator**();", Style);
23414   verifyFormat("Foo::operator void &&();", Style);
23415   verifyFormat("Foo::operator void const &&();", Style);
23416   verifyFormat("Foo::operator()(void &&);", Style);
23417   verifyFormat("Foo::operator&&(void &&);", Style);
23418   verifyFormat("Foo::operator&&();", Style);
23419   verifyFormat("operator&&(int (&&)(), class Foo);", Style);
23420   verifyFormat("operator const nsTArrayRight<E> &()", Style);
23421   verifyFormat("[[nodiscard]] operator const nsTArrayRight<E, Allocator> &()",
23422                Style);
23423   verifyFormat("operator void **()", Style);
23424   verifyFormat("operator const FooRight<Object> &()", Style);
23425   verifyFormat("operator const FooRight<Object> *()", Style);
23426   verifyFormat("operator const FooRight<Object> **()", Style);
23427   verifyFormat("operator const FooRight<Object> *&()", Style);
23428   verifyFormat("operator const FooRight<Object> *&&()", Style);
23429 
23430   Style.PointerAlignment = FormatStyle::PAS_Left;
23431   verifyFormat("Foo::operator*();", Style);
23432   verifyFormat("Foo::operator**();", Style);
23433   verifyFormat("Foo::operator void*();", Style);
23434   verifyFormat("Foo::operator void**();", Style);
23435   verifyFormat("Foo::operator void*&();", Style);
23436   verifyFormat("Foo::operator void*&&();", Style);
23437   verifyFormat("Foo::operator void const*();", Style);
23438   verifyFormat("Foo::operator void const**();", Style);
23439   verifyFormat("Foo::operator void const*&();", Style);
23440   verifyFormat("Foo::operator void const*&&();", Style);
23441   verifyFormat("Foo::operator/*comment*/ void*();", Style);
23442   verifyFormat("Foo::operator/*a*/ const /*b*/ void*();", Style);
23443   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void*();", Style);
23444   verifyFormat("Foo::operator()(void*);", Style);
23445   verifyFormat("Foo::operator*(void*);", Style);
23446   verifyFormat("Foo::operator*();", Style);
23447   verifyFormat("Foo::operator<int>*();", Style);
23448   verifyFormat("Foo::operator<Foo>*();", Style);
23449   verifyFormat("Foo::operator<int>**();", Style);
23450   verifyFormat("Foo::operator<Foo>**();", Style);
23451   verifyFormat("Foo::operator<Foo>*&();", Style);
23452   verifyFormat("Foo::operator<int>&();", Style);
23453   verifyFormat("Foo::operator<Foo>&();", Style);
23454   verifyFormat("Foo::operator<int>&&();", Style);
23455   verifyFormat("Foo::operator<Foo>&&();", Style);
23456   verifyFormat("Foo::operator<int>*&();", Style);
23457   verifyFormat("Foo::operator<Foo>*&();", Style);
23458   verifyFormat("operator*(int (*)(), class Foo);", Style);
23459 
23460   verifyFormat("Foo::operator&();", Style);
23461   verifyFormat("Foo::operator void&();", Style);
23462   verifyFormat("Foo::operator void const&();", Style);
23463   verifyFormat("Foo::operator/*comment*/ void&();", Style);
23464   verifyFormat("Foo::operator/*a*/ const /*b*/ void&();", Style);
23465   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void&();", Style);
23466   verifyFormat("Foo::operator()(void&);", Style);
23467   verifyFormat("Foo::operator&(void&);", Style);
23468   verifyFormat("Foo::operator&();", Style);
23469   verifyFormat("operator&(int (&)(), class Foo);", Style);
23470   verifyFormat("operator&(int (&&)(), class Foo);", Style);
23471   verifyFormat("operator&&(int (&&)(), class Foo);", Style);
23472 
23473   verifyFormat("Foo::operator&&();", Style);
23474   verifyFormat("Foo::operator void&&();", Style);
23475   verifyFormat("Foo::operator void const&&();", Style);
23476   verifyFormat("Foo::operator/*comment*/ void&&();", Style);
23477   verifyFormat("Foo::operator/*a*/ const /*b*/ void&&();", Style);
23478   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void&&();", Style);
23479   verifyFormat("Foo::operator()(void&&);", Style);
23480   verifyFormat("Foo::operator&&(void&&);", Style);
23481   verifyFormat("Foo::operator&&();", Style);
23482   verifyFormat("operator&&(int (&&)(), class Foo);", Style);
23483   verifyFormat("operator const nsTArrayLeft<E>&()", Style);
23484   verifyFormat("[[nodiscard]] operator const nsTArrayLeft<E, Allocator>&()",
23485                Style);
23486   verifyFormat("operator void**()", Style);
23487   verifyFormat("operator const FooLeft<Object>&()", Style);
23488   verifyFormat("operator const FooLeft<Object>*()", Style);
23489   verifyFormat("operator const FooLeft<Object>**()", Style);
23490   verifyFormat("operator const FooLeft<Object>*&()", Style);
23491   verifyFormat("operator const FooLeft<Object>*&&()", Style);
23492 
23493   // PR45107
23494   verifyFormat("operator Vector<String>&();", Style);
23495   verifyFormat("operator const Vector<String>&();", Style);
23496   verifyFormat("operator foo::Bar*();", Style);
23497   verifyFormat("operator const Foo<X>::Bar<Y>*();", Style);
23498   verifyFormat("operator/*a*/ const /*b*/ Foo /*c*/<X> /*d*/ ::Bar<Y>*();",
23499                Style);
23500 
23501   Style.PointerAlignment = FormatStyle::PAS_Middle;
23502   verifyFormat("Foo::operator*();", Style);
23503   verifyFormat("Foo::operator void *();", Style);
23504   verifyFormat("Foo::operator()(void *);", Style);
23505   verifyFormat("Foo::operator*(void *);", Style);
23506   verifyFormat("Foo::operator*();", Style);
23507   verifyFormat("operator*(int (*)(), class Foo);", Style);
23508 
23509   verifyFormat("Foo::operator&();", Style);
23510   verifyFormat("Foo::operator void &();", Style);
23511   verifyFormat("Foo::operator void const &();", Style);
23512   verifyFormat("Foo::operator()(void &);", Style);
23513   verifyFormat("Foo::operator&(void &);", Style);
23514   verifyFormat("Foo::operator&();", Style);
23515   verifyFormat("operator&(int (&)(), class Foo);", Style);
23516 
23517   verifyFormat("Foo::operator&&();", Style);
23518   verifyFormat("Foo::operator void &&();", Style);
23519   verifyFormat("Foo::operator void const &&();", Style);
23520   verifyFormat("Foo::operator()(void &&);", Style);
23521   verifyFormat("Foo::operator&&(void &&);", Style);
23522   verifyFormat("Foo::operator&&();", Style);
23523   verifyFormat("operator&&(int (&&)(), class Foo);", Style);
23524 }
23525 
23526 TEST_F(FormatTest, OperatorPassedAsAFunctionPtr) {
23527   FormatStyle Style = getLLVMStyle();
23528   // PR46157
23529   verifyFormat("foo(operator+, -42);", Style);
23530   verifyFormat("foo(operator++, -42);", Style);
23531   verifyFormat("foo(operator--, -42);", Style);
23532   verifyFormat("foo(-42, operator--);", Style);
23533   verifyFormat("foo(-42, operator, );", Style);
23534   verifyFormat("foo(operator, , -42);", Style);
23535 }
23536 
23537 TEST_F(FormatTest, WhitespaceSensitiveMacros) {
23538   FormatStyle Style = getLLVMStyle();
23539   Style.WhitespaceSensitiveMacros.push_back("FOO");
23540 
23541   // Don't use the helpers here, since 'mess up' will change the whitespace
23542   // and these are all whitespace sensitive by definition
23543   EXPECT_EQ("FOO(String-ized&Messy+But(: :Still)=Intentional);",
23544             format("FOO(String-ized&Messy+But(: :Still)=Intentional);", Style));
23545   EXPECT_EQ(
23546       "FOO(String-ized&Messy+But\\(: :Still)=Intentional);",
23547       format("FOO(String-ized&Messy+But\\(: :Still)=Intentional);", Style));
23548   EXPECT_EQ("FOO(String-ized&Messy+But,: :Still=Intentional);",
23549             format("FOO(String-ized&Messy+But,: :Still=Intentional);", Style));
23550   EXPECT_EQ("FOO(String-ized&Messy+But,: :\n"
23551             "       Still=Intentional);",
23552             format("FOO(String-ized&Messy+But,: :\n"
23553                    "       Still=Intentional);",
23554                    Style));
23555   Style.AlignConsecutiveAssignments.Enabled = true;
23556   EXPECT_EQ("FOO(String-ized=&Messy+But,: :\n"
23557             "       Still=Intentional);",
23558             format("FOO(String-ized=&Messy+But,: :\n"
23559                    "       Still=Intentional);",
23560                    Style));
23561 
23562   Style.ColumnLimit = 21;
23563   EXPECT_EQ("FOO(String-ized&Messy+But: :Still=Intentional);",
23564             format("FOO(String-ized&Messy+But: :Still=Intentional);", Style));
23565 }
23566 
23567 TEST_F(FormatTest, VeryLongNamespaceCommentSplit) {
23568   // These tests are not in NamespaceEndCommentsFixerTest because that doesn't
23569   // test its interaction with line wrapping
23570   FormatStyle Style = getLLVMStyleWithColumns(80);
23571   verifyFormat("namespace {\n"
23572                "int i;\n"
23573                "int j;\n"
23574                "} // namespace",
23575                Style);
23576 
23577   verifyFormat("namespace AAA {\n"
23578                "int i;\n"
23579                "int j;\n"
23580                "} // namespace AAA",
23581                Style);
23582 
23583   EXPECT_EQ("namespace Averyveryveryverylongnamespace {\n"
23584             "int i;\n"
23585             "int j;\n"
23586             "} // namespace Averyveryveryverylongnamespace",
23587             format("namespace Averyveryveryverylongnamespace {\n"
23588                    "int i;\n"
23589                    "int j;\n"
23590                    "}",
23591                    Style));
23592 
23593   EXPECT_EQ(
23594       "namespace "
23595       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::\n"
23596       "    went::mad::now {\n"
23597       "int i;\n"
23598       "int j;\n"
23599       "} // namespace\n"
23600       "  // "
23601       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::"
23602       "went::mad::now",
23603       format("namespace "
23604              "would::it::save::you::a::lot::of::time::if_::i::"
23605              "just::gave::up::and_::went::mad::now {\n"
23606              "int i;\n"
23607              "int j;\n"
23608              "}",
23609              Style));
23610 
23611   // This used to duplicate the comment again and again on subsequent runs
23612   EXPECT_EQ(
23613       "namespace "
23614       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::\n"
23615       "    went::mad::now {\n"
23616       "int i;\n"
23617       "int j;\n"
23618       "} // namespace\n"
23619       "  // "
23620       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::"
23621       "went::mad::now",
23622       format("namespace "
23623              "would::it::save::you::a::lot::of::time::if_::i::"
23624              "just::gave::up::and_::went::mad::now {\n"
23625              "int i;\n"
23626              "int j;\n"
23627              "} // namespace\n"
23628              "  // "
23629              "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::"
23630              "and_::went::mad::now",
23631              Style));
23632 }
23633 
23634 TEST_F(FormatTest, LikelyUnlikely) {
23635   FormatStyle Style = getLLVMStyle();
23636 
23637   verifyFormat("if (argc > 5) [[unlikely]] {\n"
23638                "  return 29;\n"
23639                "}",
23640                Style);
23641 
23642   verifyFormat("if (argc > 5) [[likely]] {\n"
23643                "  return 29;\n"
23644                "}",
23645                Style);
23646 
23647   verifyFormat("if (argc > 5) [[unlikely]] {\n"
23648                "  return 29;\n"
23649                "} else [[likely]] {\n"
23650                "  return 42;\n"
23651                "}\n",
23652                Style);
23653 
23654   verifyFormat("if (argc > 5) [[unlikely]] {\n"
23655                "  return 29;\n"
23656                "} else if (argc > 10) [[likely]] {\n"
23657                "  return 99;\n"
23658                "} else {\n"
23659                "  return 42;\n"
23660                "}\n",
23661                Style);
23662 
23663   verifyFormat("if (argc > 5) [[gnu::unused]] {\n"
23664                "  return 29;\n"
23665                "}",
23666                Style);
23667 
23668   verifyFormat("if (argc > 5) [[unlikely]]\n"
23669                "  return 29;\n",
23670                Style);
23671   verifyFormat("if (argc > 5) [[likely]]\n"
23672                "  return 29;\n",
23673                Style);
23674 
23675   Style.AttributeMacros.push_back("UNLIKELY");
23676   Style.AttributeMacros.push_back("LIKELY");
23677   verifyFormat("if (argc > 5) UNLIKELY\n"
23678                "  return 29;\n",
23679                Style);
23680 
23681   verifyFormat("if (argc > 5) UNLIKELY {\n"
23682                "  return 29;\n"
23683                "}",
23684                Style);
23685   verifyFormat("if (argc > 5) UNLIKELY {\n"
23686                "  return 29;\n"
23687                "} else [[likely]] {\n"
23688                "  return 42;\n"
23689                "}\n",
23690                Style);
23691   verifyFormat("if (argc > 5) UNLIKELY {\n"
23692                "  return 29;\n"
23693                "} else LIKELY {\n"
23694                "  return 42;\n"
23695                "}\n",
23696                Style);
23697   verifyFormat("if (argc > 5) [[unlikely]] {\n"
23698                "  return 29;\n"
23699                "} else LIKELY {\n"
23700                "  return 42;\n"
23701                "}\n",
23702                Style);
23703 }
23704 
23705 TEST_F(FormatTest, PenaltyIndentedWhitespace) {
23706   verifyFormat("Constructor()\n"
23707                "    : aaaaaa(aaaaaa), aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
23708                "                          aaaa(aaaaaaaaaaaaaaaaaa, "
23709                "aaaaaaaaaaaaaaaaaat))");
23710   verifyFormat("Constructor()\n"
23711                "    : aaaaaaaaaaaaa(aaaaaa), "
23712                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa)");
23713 
23714   FormatStyle StyleWithWhitespacePenalty = getLLVMStyle();
23715   StyleWithWhitespacePenalty.PenaltyIndentedWhitespace = 5;
23716   verifyFormat("Constructor()\n"
23717                "    : aaaaaa(aaaaaa),\n"
23718                "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
23719                "          aaaa(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaat))",
23720                StyleWithWhitespacePenalty);
23721   verifyFormat("Constructor()\n"
23722                "    : aaaaaaaaaaaaa(aaaaaa), "
23723                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa)",
23724                StyleWithWhitespacePenalty);
23725 }
23726 
23727 TEST_F(FormatTest, LLVMDefaultStyle) {
23728   FormatStyle Style = getLLVMStyle();
23729   verifyFormat("extern \"C\" {\n"
23730                "int foo();\n"
23731                "}",
23732                Style);
23733 }
23734 TEST_F(FormatTest, GNUDefaultStyle) {
23735   FormatStyle Style = getGNUStyle();
23736   verifyFormat("extern \"C\"\n"
23737                "{\n"
23738                "  int foo ();\n"
23739                "}",
23740                Style);
23741 }
23742 TEST_F(FormatTest, MozillaDefaultStyle) {
23743   FormatStyle Style = getMozillaStyle();
23744   verifyFormat("extern \"C\"\n"
23745                "{\n"
23746                "  int foo();\n"
23747                "}",
23748                Style);
23749 }
23750 TEST_F(FormatTest, GoogleDefaultStyle) {
23751   FormatStyle Style = getGoogleStyle();
23752   verifyFormat("extern \"C\" {\n"
23753                "int foo();\n"
23754                "}",
23755                Style);
23756 }
23757 TEST_F(FormatTest, ChromiumDefaultStyle) {
23758   FormatStyle Style = getChromiumStyle(FormatStyle::LanguageKind::LK_Cpp);
23759   verifyFormat("extern \"C\" {\n"
23760                "int foo();\n"
23761                "}",
23762                Style);
23763 }
23764 TEST_F(FormatTest, MicrosoftDefaultStyle) {
23765   FormatStyle Style = getMicrosoftStyle(FormatStyle::LanguageKind::LK_Cpp);
23766   verifyFormat("extern \"C\"\n"
23767                "{\n"
23768                "    int foo();\n"
23769                "}",
23770                Style);
23771 }
23772 TEST_F(FormatTest, WebKitDefaultStyle) {
23773   FormatStyle Style = getWebKitStyle();
23774   verifyFormat("extern \"C\" {\n"
23775                "int foo();\n"
23776                "}",
23777                Style);
23778 }
23779 
23780 TEST_F(FormatTest, Concepts) {
23781   EXPECT_EQ(getLLVMStyle().BreakBeforeConceptDeclarations,
23782             FormatStyle::BBCDS_Always);
23783   verifyFormat("template <typename T>\n"
23784                "concept True = true;");
23785 
23786   verifyFormat("template <typename T>\n"
23787                "concept C = ((false || foo()) && C2<T>) ||\n"
23788                "            (std::trait<T>::value && Baz) || sizeof(T) >= 6;",
23789                getLLVMStyleWithColumns(60));
23790 
23791   verifyFormat("template <typename T>\n"
23792                "concept DelayedCheck = true && requires(T t) { t.bar(); } && "
23793                "sizeof(T) <= 8;");
23794 
23795   verifyFormat("template <typename T>\n"
23796                "concept DelayedCheck = true && requires(T t) {\n"
23797                "                                 t.bar();\n"
23798                "                                 t.baz();\n"
23799                "                               } && sizeof(T) <= 8;");
23800 
23801   verifyFormat("template <typename T>\n"
23802                "concept DelayedCheck = true && requires(T t) { // Comment\n"
23803                "                                 t.bar();\n"
23804                "                                 t.baz();\n"
23805                "                               } && sizeof(T) <= 8;");
23806 
23807   verifyFormat("template <typename T>\n"
23808                "concept DelayedCheck = false || requires(T t) { t.bar(); } && "
23809                "sizeof(T) <= 8;");
23810 
23811   verifyFormat("template <typename T>\n"
23812                "concept DelayedCheck = !!false || requires(T t) { t.bar(); } "
23813                "&& sizeof(T) <= 8;");
23814 
23815   verifyFormat(
23816       "template <typename T>\n"
23817       "concept DelayedCheck = static_cast<bool>(0) ||\n"
23818       "                       requires(T t) { t.bar(); } && sizeof(T) <= 8;");
23819 
23820   verifyFormat("template <typename T>\n"
23821                "concept DelayedCheck = bool(0) || requires(T t) { t.bar(); } "
23822                "&& sizeof(T) <= 8;");
23823 
23824   verifyFormat(
23825       "template <typename T>\n"
23826       "concept DelayedCheck = (bool)(0) ||\n"
23827       "                       requires(T t) { t.bar(); } && sizeof(T) <= 8;");
23828 
23829   verifyFormat("template <typename T>\n"
23830                "concept DelayedCheck = (bool)0 || requires(T t) { t.bar(); } "
23831                "&& sizeof(T) <= 8;");
23832 
23833   verifyFormat("template <typename T>\n"
23834                "concept Size = sizeof(T) >= 5 && requires(T t) { t.bar(); } && "
23835                "sizeof(T) <= 8;");
23836 
23837   verifyFormat("template <typename T>\n"
23838                "concept Size = 2 < 5 && 2 <= 5 && 8 >= 5 && 8 > 5 &&\n"
23839                "               requires(T t) {\n"
23840                "                 t.bar();\n"
23841                "                 t.baz();\n"
23842                "               } && sizeof(T) <= 8 && !(4 < 3);",
23843                getLLVMStyleWithColumns(60));
23844 
23845   verifyFormat("template <typename T>\n"
23846                "concept TrueOrNot = IsAlwaysTrue || IsNeverTrue;");
23847 
23848   verifyFormat("template <typename T>\n"
23849                "concept C = foo();");
23850 
23851   verifyFormat("template <typename T>\n"
23852                "concept C = foo(T());");
23853 
23854   verifyFormat("template <typename T>\n"
23855                "concept C = foo(T{});");
23856 
23857   verifyFormat("template <typename T>\n"
23858                "concept Size = V<sizeof(T)>::Value > 5;");
23859 
23860   verifyFormat("template <typename T>\n"
23861                "concept True = S<T>::Value;");
23862 
23863   verifyFormat(
23864       "template <typename T>\n"
23865       "concept C = []() { return true; }() && requires(T t) { t.bar(); } &&\n"
23866       "            sizeof(T) <= 8;");
23867 
23868   // FIXME: This is misformatted because the fake l paren starts at bool, not at
23869   // the lambda l square.
23870   verifyFormat("template <typename T>\n"
23871                "concept C = [] -> bool { return true; }() && requires(T t) { "
23872                "t.bar(); } &&\n"
23873                "                      sizeof(T) <= 8;");
23874 
23875   verifyFormat(
23876       "template <typename T>\n"
23877       "concept C = decltype([]() { return std::true_type{}; }())::value &&\n"
23878       "            requires(T t) { t.bar(); } && sizeof(T) <= 8;");
23879 
23880   verifyFormat("template <typename T>\n"
23881                "concept C = decltype([]() { return std::true_type{}; "
23882                "}())::value && requires(T t) { t.bar(); } && sizeof(T) <= 8;",
23883                getLLVMStyleWithColumns(120));
23884 
23885   verifyFormat("template <typename T>\n"
23886                "concept C = decltype([]() -> std::true_type { return {}; "
23887                "}())::value &&\n"
23888                "            requires(T t) { t.bar(); } && sizeof(T) <= 8;");
23889 
23890   verifyFormat("template <typename T>\n"
23891                "concept C = true;\n"
23892                "Foo Bar;");
23893 
23894   verifyFormat("template <typename T>\n"
23895                "concept Hashable = requires(T a) {\n"
23896                "                     { std::hash<T>{}(a) } -> "
23897                "std::convertible_to<std::size_t>;\n"
23898                "                   };");
23899 
23900   verifyFormat(
23901       "template <typename T>\n"
23902       "concept EqualityComparable = requires(T a, T b) {\n"
23903       "                               { a == b } -> std::same_as<bool>;\n"
23904       "                             };");
23905 
23906   verifyFormat(
23907       "template <typename T>\n"
23908       "concept EqualityComparable = requires(T a, T b) {\n"
23909       "                               { a == b } -> std::same_as<bool>;\n"
23910       "                               { a != b } -> std::same_as<bool>;\n"
23911       "                             };");
23912 
23913   verifyFormat("template <typename T>\n"
23914                "concept WeakEqualityComparable = requires(T a, T b) {\n"
23915                "                                   { a == b };\n"
23916                "                                   { a != b };\n"
23917                "                                 };");
23918 
23919   verifyFormat("template <typename T>\n"
23920                "concept HasSizeT = requires { typename T::size_t; };");
23921 
23922   verifyFormat("template <typename T>\n"
23923                "concept Semiregular =\n"
23924                "    DefaultConstructible<T> && CopyConstructible<T> && "
23925                "CopyAssignable<T> &&\n"
23926                "    requires(T a, std::size_t n) {\n"
23927                "      requires Same<T *, decltype(&a)>;\n"
23928                "      { a.~T() } noexcept;\n"
23929                "      requires Same<T *, decltype(new T)>;\n"
23930                "      requires Same<T *, decltype(new T[n])>;\n"
23931                "      { delete new T; };\n"
23932                "      { delete new T[n]; };\n"
23933                "    };");
23934 
23935   verifyFormat("template <typename T>\n"
23936                "concept Semiregular =\n"
23937                "    requires(T a, std::size_t n) {\n"
23938                "      requires Same<T *, decltype(&a)>;\n"
23939                "      { a.~T() } noexcept;\n"
23940                "      requires Same<T *, decltype(new T)>;\n"
23941                "      requires Same<T *, decltype(new T[n])>;\n"
23942                "      { delete new T; };\n"
23943                "      { delete new T[n]; };\n"
23944                "      { new T } -> std::same_as<T *>;\n"
23945                "    } && DefaultConstructible<T> && CopyConstructible<T> && "
23946                "CopyAssignable<T>;");
23947 
23948   verifyFormat(
23949       "template <typename T>\n"
23950       "concept Semiregular =\n"
23951       "    DefaultConstructible<T> && requires(T a, std::size_t n) {\n"
23952       "                                 requires Same<T *, decltype(&a)>;\n"
23953       "                                 { a.~T() } noexcept;\n"
23954       "                                 requires Same<T *, decltype(new T)>;\n"
23955       "                                 requires Same<T *, decltype(new "
23956       "T[n])>;\n"
23957       "                                 { delete new T; };\n"
23958       "                                 { delete new T[n]; };\n"
23959       "                               } && CopyConstructible<T> && "
23960       "CopyAssignable<T>;");
23961 
23962   verifyFormat("template <typename T>\n"
23963                "concept Two = requires(T t) {\n"
23964                "                { t.foo() } -> std::same_as<Bar>;\n"
23965                "              } && requires(T &&t) {\n"
23966                "                     { t.foo() } -> std::same_as<Bar &&>;\n"
23967                "                   };");
23968 
23969   verifyFormat(
23970       "template <typename T>\n"
23971       "concept C = requires(T x) {\n"
23972       "              { *x } -> std::convertible_to<typename T::inner>;\n"
23973       "              { x + 1 } noexcept -> std::same_as<int>;\n"
23974       "              { x * 1 } -> std::convertible_to<T>;\n"
23975       "            };");
23976 
23977   verifyFormat(
23978       "template <typename T, typename U = T>\n"
23979       "concept Swappable = requires(T &&t, U &&u) {\n"
23980       "                      swap(std::forward<T>(t), std::forward<U>(u));\n"
23981       "                      swap(std::forward<U>(u), std::forward<T>(t));\n"
23982       "                    };");
23983 
23984   verifyFormat("template <typename T, typename U>\n"
23985                "concept Common = requires(T &&t, U &&u) {\n"
23986                "                   typename CommonType<T, U>;\n"
23987                "                   { CommonType<T, U>(std::forward<T>(t)) };\n"
23988                "                 };");
23989 
23990   verifyFormat("template <typename T, typename U>\n"
23991                "concept Common = requires(T &&t, U &&u) {\n"
23992                "                   typename CommonType<T, U>;\n"
23993                "                   { CommonType<T, U>{std::forward<T>(t)} };\n"
23994                "                 };");
23995 
23996   verifyFormat(
23997       "template <typename T>\n"
23998       "concept C = requires(T t) {\n"
23999       "              requires Bar<T> && Foo<T>;\n"
24000       "              requires((trait<T> && Baz) || (T2<T> && Foo<T>));\n"
24001       "            };");
24002 
24003   verifyFormat("template <typename T>\n"
24004                "concept HasFoo = requires(T t) {\n"
24005                "                   { t.foo() };\n"
24006                "                   t.foo();\n"
24007                "                 };\n"
24008                "template <typename T>\n"
24009                "concept HasBar = requires(T t) {\n"
24010                "                   { t.bar() };\n"
24011                "                   t.bar();\n"
24012                "                 };");
24013 
24014   verifyFormat("template <typename T>\n"
24015                "concept Large = sizeof(T) > 10;");
24016 
24017   verifyFormat("template <typename T, typename U>\n"
24018                "concept FooableWith = requires(T t, U u) {\n"
24019                "                        typename T::foo_type;\n"
24020                "                        { t.foo(u) } -> typename T::foo_type;\n"
24021                "                        t++;\n"
24022                "                      };\n"
24023                "void doFoo(FooableWith<int> auto t) { t.foo(3); }");
24024 
24025   verifyFormat("template <typename T>\n"
24026                "concept Context = is_specialization_of_v<context, T>;");
24027 
24028   verifyFormat("template <typename T>\n"
24029                "concept Node = std::is_object_v<T>;");
24030 
24031   verifyFormat("template <class T>\n"
24032                "concept integral = __is_integral(T);");
24033 
24034   verifyFormat("template <class T>\n"
24035                "concept is2D = __array_extent(T, 1) == 2;");
24036 
24037   verifyFormat("template <class T>\n"
24038                "concept isRhs = __is_rvalue_expr(std::declval<T>() + 2)");
24039 
24040   verifyFormat("template <class T, class T2>\n"
24041                "concept Same = __is_same_as<T, T2>;");
24042 
24043   auto Style = getLLVMStyle();
24044   Style.BreakBeforeConceptDeclarations = FormatStyle::BBCDS_Allowed;
24045 
24046   verifyFormat(
24047       "template <typename T>\n"
24048       "concept C = requires(T t) {\n"
24049       "              requires Bar<T> && Foo<T>;\n"
24050       "              requires((trait<T> && Baz) || (T2<T> && Foo<T>));\n"
24051       "            };",
24052       Style);
24053 
24054   verifyFormat("template <typename T>\n"
24055                "concept HasFoo = requires(T t) {\n"
24056                "                   { t.foo() };\n"
24057                "                   t.foo();\n"
24058                "                 };\n"
24059                "template <typename T>\n"
24060                "concept HasBar = requires(T t) {\n"
24061                "                   { t.bar() };\n"
24062                "                   t.bar();\n"
24063                "                 };",
24064                Style);
24065 
24066   verifyFormat("template <typename T> concept True = true;", Style);
24067 
24068   verifyFormat("template <typename T>\n"
24069                "concept C = decltype([]() -> std::true_type { return {}; "
24070                "}())::value &&\n"
24071                "            requires(T t) { t.bar(); } && sizeof(T) <= 8;",
24072                Style);
24073 
24074   verifyFormat("template <typename T>\n"
24075                "concept Semiregular =\n"
24076                "    DefaultConstructible<T> && CopyConstructible<T> && "
24077                "CopyAssignable<T> &&\n"
24078                "    requires(T a, std::size_t n) {\n"
24079                "      requires Same<T *, decltype(&a)>;\n"
24080                "      { a.~T() } noexcept;\n"
24081                "      requires Same<T *, decltype(new T)>;\n"
24082                "      requires Same<T *, decltype(new T[n])>;\n"
24083                "      { delete new T; };\n"
24084                "      { delete new T[n]; };\n"
24085                "    };",
24086                Style);
24087 
24088   Style.BreakBeforeConceptDeclarations = FormatStyle::BBCDS_Never;
24089 
24090   verifyFormat("template <typename T> concept C =\n"
24091                "    requires(T t) {\n"
24092                "      requires Bar<T> && Foo<T>;\n"
24093                "      requires((trait<T> && Baz) || (T2<T> && Foo<T>));\n"
24094                "    };",
24095                Style);
24096 
24097   verifyFormat("template <typename T> concept HasFoo = requires(T t) {\n"
24098                "                                         { t.foo() };\n"
24099                "                                         t.foo();\n"
24100                "                                       };\n"
24101                "template <typename T> concept HasBar = requires(T t) {\n"
24102                "                                         { t.bar() };\n"
24103                "                                         t.bar();\n"
24104                "                                       };",
24105                Style);
24106 
24107   verifyFormat("template <typename T> concept True = true;", Style);
24108 
24109   verifyFormat(
24110       "template <typename T> concept C = decltype([]() -> std::true_type {\n"
24111       "                                    return {};\n"
24112       "                                  }())::value &&\n"
24113       "                                  requires(T t) { t.bar(); } && "
24114       "sizeof(T) <= 8;",
24115       Style);
24116 
24117   verifyFormat("template <typename T> concept Semiregular =\n"
24118                "    DefaultConstructible<T> && CopyConstructible<T> && "
24119                "CopyAssignable<T> &&\n"
24120                "    requires(T a, std::size_t n) {\n"
24121                "      requires Same<T *, decltype(&a)>;\n"
24122                "      { a.~T() } noexcept;\n"
24123                "      requires Same<T *, decltype(new T)>;\n"
24124                "      requires Same<T *, decltype(new T[n])>;\n"
24125                "      { delete new T; };\n"
24126                "      { delete new T[n]; };\n"
24127                "    };",
24128                Style);
24129 
24130   // The following tests are invalid C++, we just want to make sure we don't
24131   // assert.
24132   verifyFormat("template <typename T>\n"
24133                "concept C = requires C2<T>;");
24134 
24135   verifyFormat("template <typename T>\n"
24136                "concept C = 5 + 4;");
24137 
24138   verifyFormat("template <typename T>\n"
24139                "concept C =\n"
24140                "class X;");
24141 
24142   verifyFormat("template <typename T>\n"
24143                "concept C = [] && true;");
24144 
24145   verifyFormat("template <typename T>\n"
24146                "concept C = [] && requires(T t) { typename T::size_type; };");
24147 }
24148 
24149 TEST_F(FormatTest, RequiresClausesPositions) {
24150   auto Style = getLLVMStyle();
24151   EXPECT_EQ(Style.RequiresClausePosition, FormatStyle::RCPS_OwnLine);
24152   EXPECT_EQ(Style.IndentRequiresClause, true);
24153 
24154   verifyFormat("template <typename T>\n"
24155                "  requires(Foo<T> && std::trait<T>)\n"
24156                "struct Bar;",
24157                Style);
24158 
24159   verifyFormat("template <typename T>\n"
24160                "  requires(Foo<T> && std::trait<T>)\n"
24161                "class Bar {\n"
24162                "public:\n"
24163                "  Bar(T t);\n"
24164                "  bool baz();\n"
24165                "};",
24166                Style);
24167 
24168   verifyFormat(
24169       "template <typename T>\n"
24170       "  requires requires(T &&t) {\n"
24171       "             typename T::I;\n"
24172       "             requires(F<typename T::I> && std::trait<typename T::I>);\n"
24173       "           }\n"
24174       "Bar(T) -> Bar<typename T::I>;",
24175       Style);
24176 
24177   verifyFormat("template <typename T>\n"
24178                "  requires(Foo<T> && std::trait<T>)\n"
24179                "constexpr T MyGlobal;",
24180                Style);
24181 
24182   verifyFormat("template <typename T>\n"
24183                "  requires Foo<T> && requires(T t) {\n"
24184                "                       { t.baz() } -> std::same_as<bool>;\n"
24185                "                       requires std::same_as<T::Factor, int>;\n"
24186                "                     }\n"
24187                "inline int bar(T t) {\n"
24188                "  return t.baz() ? T::Factor : 5;\n"
24189                "}",
24190                Style);
24191 
24192   verifyFormat("template <typename T>\n"
24193                "inline int bar(T t)\n"
24194                "  requires Foo<T> && requires(T t) {\n"
24195                "                       { t.baz() } -> std::same_as<bool>;\n"
24196                "                       requires std::same_as<T::Factor, int>;\n"
24197                "                     }\n"
24198                "{\n"
24199                "  return t.baz() ? T::Factor : 5;\n"
24200                "}",
24201                Style);
24202 
24203   verifyFormat("template <typename T>\n"
24204                "  requires F<T>\n"
24205                "int bar(T t) {\n"
24206                "  return 5;\n"
24207                "}",
24208                Style);
24209 
24210   verifyFormat("template <typename T>\n"
24211                "int bar(T t)\n"
24212                "  requires F<T>\n"
24213                "{\n"
24214                "  return 5;\n"
24215                "}",
24216                Style);
24217 
24218   verifyFormat("template <typename T>\n"
24219                "int bar(T t)\n"
24220                "  requires F<T>;",
24221                Style);
24222 
24223   Style.IndentRequiresClause = false;
24224   verifyFormat("template <typename T>\n"
24225                "requires F<T>\n"
24226                "int bar(T t) {\n"
24227                "  return 5;\n"
24228                "}",
24229                Style);
24230 
24231   verifyFormat("template <typename T>\n"
24232                "int bar(T t)\n"
24233                "requires F<T>\n"
24234                "{\n"
24235                "  return 5;\n"
24236                "}",
24237                Style);
24238 
24239   Style.RequiresClausePosition = FormatStyle::RCPS_SingleLine;
24240   verifyFormat("template <typename T> requires Foo<T> struct Bar {};\n"
24241                "template <typename T> requires Foo<T> void bar() {}\n"
24242                "template <typename T> void bar() requires Foo<T> {}\n"
24243                "template <typename T> void bar() requires Foo<T>;\n"
24244                "template <typename T> requires Foo<T> Bar(T) -> Bar<T>;",
24245                Style);
24246 
24247   auto ColumnStyle = Style;
24248   ColumnStyle.ColumnLimit = 40;
24249   verifyFormat("template <typename AAAAAAA>\n"
24250                "requires Foo<T> struct Bar {};\n"
24251                "template <typename AAAAAAA>\n"
24252                "requires Foo<T> void bar() {}\n"
24253                "template <typename AAAAAAA>\n"
24254                "void bar() requires Foo<T> {}\n"
24255                "template <typename AAAAAAA>\n"
24256                "requires Foo<T> Baz(T) -> Baz<T>;",
24257                ColumnStyle);
24258 
24259   verifyFormat("template <typename T>\n"
24260                "requires Foo<AAAAAAA> struct Bar {};\n"
24261                "template <typename T>\n"
24262                "requires Foo<AAAAAAA> void bar() {}\n"
24263                "template <typename T>\n"
24264                "void bar() requires Foo<AAAAAAA> {}\n"
24265                "template <typename T>\n"
24266                "requires Foo<AAAAAAA> Bar(T) -> Bar<T>;",
24267                ColumnStyle);
24268 
24269   verifyFormat("template <typename AAAAAAA>\n"
24270                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24271                "struct Bar {};\n"
24272                "template <typename AAAAAAA>\n"
24273                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24274                "void bar() {}\n"
24275                "template <typename AAAAAAA>\n"
24276                "void bar()\n"
24277                "    requires Foo<AAAAAAAAAAAAAAAA> {}\n"
24278                "template <typename AAAAAAA>\n"
24279                "requires Foo<AAAAAAAA> Bar(T) -> Bar<T>;\n"
24280                "template <typename AAAAAAA>\n"
24281                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24282                "Bar(T) -> Bar<T>;",
24283                ColumnStyle);
24284 
24285   Style.RequiresClausePosition = FormatStyle::RCPS_WithFollowing;
24286   ColumnStyle.RequiresClausePosition = FormatStyle::RCPS_WithFollowing;
24287 
24288   verifyFormat("template <typename T>\n"
24289                "requires Foo<T> struct Bar {};\n"
24290                "template <typename T>\n"
24291                "requires Foo<T> void bar() {}\n"
24292                "template <typename T>\n"
24293                "void bar()\n"
24294                "requires Foo<T> {}\n"
24295                "template <typename T>\n"
24296                "void bar()\n"
24297                "requires Foo<T>;\n"
24298                "template <typename T>\n"
24299                "requires Foo<T> Bar(T) -> Bar<T>;",
24300                Style);
24301 
24302   verifyFormat("template <typename AAAAAAA>\n"
24303                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24304                "struct Bar {};\n"
24305                "template <typename AAAAAAA>\n"
24306                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24307                "void bar() {}\n"
24308                "template <typename AAAAAAA>\n"
24309                "void bar()\n"
24310                "requires Foo<AAAAAAAAAAAAAAAA> {}\n"
24311                "template <typename AAAAAAA>\n"
24312                "requires Foo<AAAAAAAA> Bar(T) -> Bar<T>;\n"
24313                "template <typename AAAAAAA>\n"
24314                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24315                "Bar(T) -> Bar<T>;",
24316                ColumnStyle);
24317 
24318   Style.IndentRequiresClause = true;
24319   ColumnStyle.IndentRequiresClause = true;
24320 
24321   verifyFormat("template <typename T>\n"
24322                "  requires Foo<T> struct Bar {};\n"
24323                "template <typename T>\n"
24324                "  requires Foo<T> void bar() {}\n"
24325                "template <typename T>\n"
24326                "void bar()\n"
24327                "  requires Foo<T> {}\n"
24328                "template <typename T>\n"
24329                "  requires Foo<T> Bar(T) -> Bar<T>;",
24330                Style);
24331 
24332   verifyFormat("template <typename AAAAAAA>\n"
24333                "  requires Foo<AAAAAAAAAAAAAAAA>\n"
24334                "struct Bar {};\n"
24335                "template <typename AAAAAAA>\n"
24336                "  requires Foo<AAAAAAAAAAAAAAAA>\n"
24337                "void bar() {}\n"
24338                "template <typename AAAAAAA>\n"
24339                "void bar()\n"
24340                "  requires Foo<AAAAAAAAAAAAAAAA> {}\n"
24341                "template <typename AAAAAAA>\n"
24342                "  requires Foo<AAAAAA> Bar(T) -> Bar<T>;\n"
24343                "template <typename AAAAAAA>\n"
24344                "  requires Foo<AAAAAAAAAAAAAAAA>\n"
24345                "Bar(T) -> Bar<T>;",
24346                ColumnStyle);
24347 
24348   Style.RequiresClausePosition = FormatStyle::RCPS_WithPreceding;
24349   ColumnStyle.RequiresClausePosition = FormatStyle::RCPS_WithPreceding;
24350 
24351   verifyFormat("template <typename T> requires Foo<T>\n"
24352                "struct Bar {};\n"
24353                "template <typename T> requires Foo<T>\n"
24354                "void bar() {}\n"
24355                "template <typename T>\n"
24356                "void bar() requires Foo<T>\n"
24357                "{}\n"
24358                "template <typename T> void bar() requires Foo<T>;\n"
24359                "template <typename T> requires Foo<T>\n"
24360                "Bar(T) -> Bar<T>;",
24361                Style);
24362 
24363   verifyFormat("template <typename AAAAAAA>\n"
24364                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24365                "struct Bar {};\n"
24366                "template <typename AAAAAAA>\n"
24367                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24368                "void bar() {}\n"
24369                "template <typename AAAAAAA>\n"
24370                "void bar()\n"
24371                "    requires Foo<AAAAAAAAAAAAAAAA>\n"
24372                "{}\n"
24373                "template <typename AAAAAAA>\n"
24374                "requires Foo<AAAAAAAA>\n"
24375                "Bar(T) -> Bar<T>;\n"
24376                "template <typename AAAAAAA>\n"
24377                "requires Foo<AAAAAAAAAAAAAAAA>\n"
24378                "Bar(T) -> Bar<T>;",
24379                ColumnStyle);
24380 }
24381 
24382 TEST_F(FormatTest, RequiresClauses) {
24383   verifyFormat("struct [[nodiscard]] zero_t {\n"
24384                "  template <class T>\n"
24385                "    requires requires { number_zero_v<T>; }\n"
24386                "  [[nodiscard]] constexpr operator T() const {\n"
24387                "    return number_zero_v<T>;\n"
24388                "  }\n"
24389                "};");
24390 
24391   auto Style = getLLVMStyle();
24392 
24393   verifyFormat(
24394       "template <typename T>\n"
24395       "  requires is_default_constructible_v<hash<T>> and\n"
24396       "           is_copy_constructible_v<hash<T>> and\n"
24397       "           is_move_constructible_v<hash<T>> and\n"
24398       "           is_copy_assignable_v<hash<T>> and "
24399       "is_move_assignable_v<hash<T>> and\n"
24400       "           is_destructible_v<hash<T>> and is_swappable_v<hash<T>> and\n"
24401       "           is_callable_v<hash<T>(T)> and\n"
24402       "           is_same_v<size_t, decltype(hash<T>(declval<T>()))> and\n"
24403       "           is_same_v<size_t, decltype(hash<T>(declval<T &>()))> and\n"
24404       "           is_same_v<size_t, decltype(hash<T>(declval<const T &>()))>\n"
24405       "struct S {};",
24406       Style);
24407 
24408   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
24409   verifyFormat(
24410       "template <typename T>\n"
24411       "  requires is_default_constructible_v<hash<T>>\n"
24412       "           and is_copy_constructible_v<hash<T>>\n"
24413       "           and is_move_constructible_v<hash<T>>\n"
24414       "           and is_copy_assignable_v<hash<T>> and "
24415       "is_move_assignable_v<hash<T>>\n"
24416       "           and is_destructible_v<hash<T>> and is_swappable_v<hash<T>>\n"
24417       "           and is_callable_v<hash<T>(T)>\n"
24418       "           and is_same_v<size_t, decltype(hash<T>(declval<T>()))>\n"
24419       "           and is_same_v<size_t, decltype(hash<T>(declval<T &>()))>\n"
24420       "           and is_same_v<size_t, decltype(hash<T>(declval<const T "
24421       "&>()))>\n"
24422       "struct S {};",
24423       Style);
24424 
24425   // Not a clause, but we once hit an assert.
24426   verifyFormat("#if 0\n"
24427                "#else\n"
24428                "foo();\n"
24429                "#endif\n"
24430                "bar(requires);");
24431 }
24432 
24433 TEST_F(FormatTest, StatementAttributeLikeMacros) {
24434   FormatStyle Style = getLLVMStyle();
24435   StringRef Source = "void Foo::slot() {\n"
24436                      "  unsigned char MyChar = 'x';\n"
24437                      "  emit signal(MyChar);\n"
24438                      "  Q_EMIT signal(MyChar);\n"
24439                      "}";
24440 
24441   EXPECT_EQ(Source, format(Source, Style));
24442 
24443   Style.AlignConsecutiveDeclarations.Enabled = true;
24444   EXPECT_EQ("void Foo::slot() {\n"
24445             "  unsigned char MyChar = 'x';\n"
24446             "  emit          signal(MyChar);\n"
24447             "  Q_EMIT signal(MyChar);\n"
24448             "}",
24449             format(Source, Style));
24450 
24451   Style.StatementAttributeLikeMacros.push_back("emit");
24452   EXPECT_EQ(Source, format(Source, Style));
24453 
24454   Style.StatementAttributeLikeMacros = {};
24455   EXPECT_EQ("void Foo::slot() {\n"
24456             "  unsigned char MyChar = 'x';\n"
24457             "  emit          signal(MyChar);\n"
24458             "  Q_EMIT        signal(MyChar);\n"
24459             "}",
24460             format(Source, Style));
24461 }
24462 
24463 TEST_F(FormatTest, IndentAccessModifiers) {
24464   FormatStyle Style = getLLVMStyle();
24465   Style.IndentAccessModifiers = true;
24466   // Members are *two* levels below the record;
24467   // Style.IndentWidth == 2, thus yielding a 4 spaces wide indentation.
24468   verifyFormat("class C {\n"
24469                "    int i;\n"
24470                "};\n",
24471                Style);
24472   verifyFormat("union C {\n"
24473                "    int i;\n"
24474                "    unsigned u;\n"
24475                "};\n",
24476                Style);
24477   // Access modifiers should be indented one level below the record.
24478   verifyFormat("class C {\n"
24479                "  public:\n"
24480                "    int i;\n"
24481                "};\n",
24482                Style);
24483   verifyFormat("struct S {\n"
24484                "  private:\n"
24485                "    class C {\n"
24486                "        int j;\n"
24487                "\n"
24488                "      public:\n"
24489                "        C();\n"
24490                "    };\n"
24491                "\n"
24492                "  public:\n"
24493                "    int i;\n"
24494                "};\n",
24495                Style);
24496   // Enumerations are not records and should be unaffected.
24497   Style.AllowShortEnumsOnASingleLine = false;
24498   verifyFormat("enum class E {\n"
24499                "  A,\n"
24500                "  B\n"
24501                "};\n",
24502                Style);
24503   // Test with a different indentation width;
24504   // also proves that the result is Style.AccessModifierOffset agnostic.
24505   Style.IndentWidth = 3;
24506   verifyFormat("class C {\n"
24507                "   public:\n"
24508                "      int i;\n"
24509                "};\n",
24510                Style);
24511 }
24512 
24513 TEST_F(FormatTest, LimitlessStringsAndComments) {
24514   auto Style = getLLVMStyleWithColumns(0);
24515   constexpr StringRef Code =
24516       "/**\n"
24517       " * This is a multiline comment with quite some long lines, at least for "
24518       "the LLVM Style.\n"
24519       " * We will redo this with strings and line comments. Just to  check if "
24520       "everything is working.\n"
24521       " */\n"
24522       "bool foo() {\n"
24523       "  /* Single line multi line comment. */\n"
24524       "  const std::string String = \"This is a multiline string with quite "
24525       "some long lines, at least for the LLVM Style.\"\n"
24526       "                             \"We already did it with multi line "
24527       "comments, and we will do it with line comments. Just to check if "
24528       "everything is working.\";\n"
24529       "  // This is a line comment (block) with quite some long lines, at "
24530       "least for the LLVM Style.\n"
24531       "  // We already did this with multi line comments and strings. Just to "
24532       "check if everything is working.\n"
24533       "  const std::string SmallString = \"Hello World\";\n"
24534       "  // Small line comment\n"
24535       "  return String.size() > SmallString.size();\n"
24536       "}";
24537   EXPECT_EQ(Code, format(Code, Style));
24538 }
24539 
24540 TEST_F(FormatTest, FormatDecayCopy) {
24541   // error cases from unit tests
24542   verifyFormat("foo(auto())");
24543   verifyFormat("foo(auto{})");
24544   verifyFormat("foo(auto({}))");
24545   verifyFormat("foo(auto{{}})");
24546 
24547   verifyFormat("foo(auto(1))");
24548   verifyFormat("foo(auto{1})");
24549   verifyFormat("foo(new auto(1))");
24550   verifyFormat("foo(new auto{1})");
24551   verifyFormat("decltype(auto(1)) x;");
24552   verifyFormat("decltype(auto{1}) x;");
24553   verifyFormat("auto(x);");
24554   verifyFormat("auto{x};");
24555   verifyFormat("new auto{x};");
24556   verifyFormat("auto{x} = y;");
24557   verifyFormat("auto(x) = y;"); // actually a declaration, but this is clearly
24558                                 // the user's own fault
24559   verifyFormat("integral auto(x) = y;"); // actually a declaration, but this is
24560                                          // clearly the user's own fault
24561   verifyFormat("auto(*p)() = f;");       // actually a declaration; TODO FIXME
24562 }
24563 
24564 TEST_F(FormatTest, Cpp20ModulesSupport) {
24565   FormatStyle Style = getLLVMStyle();
24566   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Never;
24567   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
24568 
24569   verifyFormat("export import foo;", Style);
24570   verifyFormat("export import foo:bar;", Style);
24571   verifyFormat("export import foo.bar;", Style);
24572   verifyFormat("export import foo.bar:baz;", Style);
24573   verifyFormat("export import :bar;", Style);
24574   verifyFormat("export module foo:bar;", Style);
24575   verifyFormat("export module foo;", Style);
24576   verifyFormat("export module foo.bar;", Style);
24577   verifyFormat("export module foo.bar:baz;", Style);
24578   verifyFormat("export import <string_view>;", Style);
24579 
24580   verifyFormat("export type_name var;", Style);
24581   verifyFormat("template <class T> export using A = B<T>;", Style);
24582   verifyFormat("export using A = B;", Style);
24583   verifyFormat("export int func() {\n"
24584                "  foo();\n"
24585                "}",
24586                Style);
24587   verifyFormat("export struct {\n"
24588                "  int foo;\n"
24589                "};",
24590                Style);
24591   verifyFormat("export {\n"
24592                "  int foo;\n"
24593                "};",
24594                Style);
24595   verifyFormat("export export char const *hello() { return \"hello\"; }");
24596 
24597   verifyFormat("import bar;", Style);
24598   verifyFormat("import foo.bar;", Style);
24599   verifyFormat("import foo:bar;", Style);
24600   verifyFormat("import :bar;", Style);
24601   verifyFormat("import <ctime>;", Style);
24602   verifyFormat("import \"header\";", Style);
24603 
24604   verifyFormat("module foo;", Style);
24605   verifyFormat("module foo:bar;", Style);
24606   verifyFormat("module foo.bar;", Style);
24607   verifyFormat("module;", Style);
24608 
24609   verifyFormat("export namespace hi {\n"
24610                "const char *sayhi();\n"
24611                "}",
24612                Style);
24613 
24614   verifyFormat("module :private;", Style);
24615   verifyFormat("import <foo/bar.h>;", Style);
24616   verifyFormat("import foo...bar;", Style);
24617   verifyFormat("import ..........;", Style);
24618   verifyFormat("module foo:private;", Style);
24619   verifyFormat("import a", Style);
24620   verifyFormat("module a", Style);
24621   verifyFormat("export import a", Style);
24622   verifyFormat("export module a", Style);
24623 
24624   verifyFormat("import", Style);
24625   verifyFormat("module", Style);
24626   verifyFormat("export", Style);
24627 }
24628 
24629 TEST_F(FormatTest, CoroutineForCoawait) {
24630   FormatStyle Style = getLLVMStyle();
24631   verifyFormat("for co_await (auto x : range())\n  ;");
24632   verifyFormat("for (auto i : arr) {\n"
24633                "}",
24634                Style);
24635   verifyFormat("for co_await (auto i : arr) {\n"
24636                "}",
24637                Style);
24638   verifyFormat("for co_await (auto i : foo(T{})) {\n"
24639                "}",
24640                Style);
24641 }
24642 
24643 TEST_F(FormatTest, CoroutineCoAwait) {
24644   verifyFormat("int x = co_await foo();");
24645   verifyFormat("int x = (co_await foo());");
24646   verifyFormat("co_await (42);");
24647   verifyFormat("void operator co_await(int);");
24648   verifyFormat("void operator co_await(a);");
24649   verifyFormat("co_await a;");
24650   verifyFormat("co_await missing_await_resume{};");
24651   verifyFormat("co_await a; // comment");
24652   verifyFormat("void test0() { co_await a; }");
24653   verifyFormat("co_await co_await co_await foo();");
24654   verifyFormat("co_await foo().bar();");
24655   verifyFormat("co_await [this]() -> Task { co_return x; }");
24656   verifyFormat("co_await [this](int a, int b) -> Task { co_return co_await "
24657                "foo(); }(x, y);");
24658 
24659   FormatStyle Style = getLLVMStyleWithColumns(40);
24660   verifyFormat("co_await [this](int a, int b) -> Task {\n"
24661                "  co_return co_await foo();\n"
24662                "}(x, y);",
24663                Style);
24664   verifyFormat("co_await;");
24665 }
24666 
24667 TEST_F(FormatTest, CoroutineCoYield) {
24668   verifyFormat("int x = co_yield foo();");
24669   verifyFormat("int x = (co_yield foo());");
24670   verifyFormat("co_yield (42);");
24671   verifyFormat("co_yield {42};");
24672   verifyFormat("co_yield 42;");
24673   verifyFormat("co_yield n++;");
24674   verifyFormat("co_yield ++n;");
24675   verifyFormat("co_yield;");
24676 }
24677 
24678 TEST_F(FormatTest, CoroutineCoReturn) {
24679   verifyFormat("co_return (42);");
24680   verifyFormat("co_return;");
24681   verifyFormat("co_return {};");
24682   verifyFormat("co_return x;");
24683   verifyFormat("co_return co_await foo();");
24684   verifyFormat("co_return co_yield foo();");
24685 }
24686 
24687 TEST_F(FormatTest, EmptyShortBlock) {
24688   auto Style = getLLVMStyle();
24689   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
24690 
24691   verifyFormat("try {\n"
24692                "  doA();\n"
24693                "} catch (Exception &e) {\n"
24694                "  e.printStackTrace();\n"
24695                "}\n",
24696                Style);
24697 
24698   verifyFormat("try {\n"
24699                "  doA();\n"
24700                "} catch (Exception &e) {}\n",
24701                Style);
24702 }
24703 
24704 TEST_F(FormatTest, ShortTemplatedArgumentLists) {
24705   auto Style = getLLVMStyle();
24706 
24707   verifyFormat("template <> struct S : Template<int (*)[]> {};\n", Style);
24708   verifyFormat("template <> struct S : Template<int (*)[10]> {};\n", Style);
24709   verifyFormat("struct Y : X<[] { return 0; }> {};", Style);
24710   verifyFormat("struct Y<[] { return 0; }> {};", Style);
24711 
24712   verifyFormat("struct Z : X<decltype([] { return 0; }){}> {};", Style);
24713   verifyFormat("template <int N> struct Foo<char[N]> {};", Style);
24714 }
24715 
24716 TEST_F(FormatTest, InsertBraces) {
24717   FormatStyle Style = getLLVMStyle();
24718   Style.InsertBraces = true;
24719 
24720   verifyFormat("// clang-format off\n"
24721                "// comment\n"
24722                "if (a) f();\n"
24723                "// clang-format on\n"
24724                "if (b) {\n"
24725                "  g();\n"
24726                "}",
24727                "// clang-format off\n"
24728                "// comment\n"
24729                "if (a) f();\n"
24730                "// clang-format on\n"
24731                "if (b) g();",
24732                Style);
24733 
24734   verifyFormat("if (a) {\n"
24735                "  switch (b) {\n"
24736                "  case 1:\n"
24737                "    c = 0;\n"
24738                "    break;\n"
24739                "  default:\n"
24740                "    c = 1;\n"
24741                "  }\n"
24742                "}",
24743                "if (a)\n"
24744                "  switch (b) {\n"
24745                "  case 1:\n"
24746                "    c = 0;\n"
24747                "    break;\n"
24748                "  default:\n"
24749                "    c = 1;\n"
24750                "  }",
24751                Style);
24752 
24753   verifyFormat("for (auto node : nodes) {\n"
24754                "  if (node) {\n"
24755                "    break;\n"
24756                "  }\n"
24757                "}",
24758                "for (auto node : nodes)\n"
24759                "  if (node)\n"
24760                "    break;",
24761                Style);
24762 
24763   verifyFormat("for (auto node : nodes) {\n"
24764                "  if (node)\n"
24765                "}",
24766                "for (auto node : nodes)\n"
24767                "  if (node)",
24768                Style);
24769 
24770   verifyFormat("do {\n"
24771                "  --a;\n"
24772                "} while (a);",
24773                "do\n"
24774                "  --a;\n"
24775                "while (a);",
24776                Style);
24777 
24778   verifyFormat("if (i) {\n"
24779                "  ++i;\n"
24780                "} else {\n"
24781                "  --i;\n"
24782                "}",
24783                "if (i)\n"
24784                "  ++i;\n"
24785                "else {\n"
24786                "  --i;\n"
24787                "}",
24788                Style);
24789 
24790   verifyFormat("void f() {\n"
24791                "  while (j--) {\n"
24792                "    while (i) {\n"
24793                "      --i;\n"
24794                "    }\n"
24795                "  }\n"
24796                "}",
24797                "void f() {\n"
24798                "  while (j--)\n"
24799                "    while (i)\n"
24800                "      --i;\n"
24801                "}",
24802                Style);
24803 
24804   verifyFormat("f({\n"
24805                "  if (a) {\n"
24806                "    g();\n"
24807                "  }\n"
24808                "});",
24809                "f({\n"
24810                "  if (a)\n"
24811                "    g();\n"
24812                "});",
24813                Style);
24814 
24815   verifyFormat("if (a) {\n"
24816                "  f();\n"
24817                "} else if (b) {\n"
24818                "  g();\n"
24819                "} else {\n"
24820                "  h();\n"
24821                "}",
24822                "if (a)\n"
24823                "  f();\n"
24824                "else if (b)\n"
24825                "  g();\n"
24826                "else\n"
24827                "  h();",
24828                Style);
24829 
24830   verifyFormat("if (a) {\n"
24831                "  f();\n"
24832                "}\n"
24833                "// comment\n"
24834                "/* comment */",
24835                "if (a)\n"
24836                "  f();\n"
24837                "// comment\n"
24838                "/* comment */",
24839                Style);
24840 
24841   verifyFormat("if (a) {\n"
24842                "  // foo\n"
24843                "  // bar\n"
24844                "  f();\n"
24845                "}",
24846                "if (a)\n"
24847                "  // foo\n"
24848                "  // bar\n"
24849                "  f();",
24850                Style);
24851 
24852   verifyFormat("if (a) { // comment\n"
24853                "  // comment\n"
24854                "  f();\n"
24855                "}",
24856                "if (a) // comment\n"
24857                "  // comment\n"
24858                "  f();",
24859                Style);
24860 
24861   verifyFormat("if (a) {\n"
24862                "  f(); // comment\n"
24863                "}",
24864                "if (a)\n"
24865                "  f(); // comment",
24866                Style);
24867 
24868   verifyFormat("if (a) {\n"
24869                "  f();\n"
24870                "}\n"
24871                "#undef A\n"
24872                "#undef B",
24873                "if (a)\n"
24874                "  f();\n"
24875                "#undef A\n"
24876                "#undef B",
24877                Style);
24878 
24879   verifyFormat("if (a)\n"
24880                "#ifdef A\n"
24881                "  f();\n"
24882                "#else\n"
24883                "  g();\n"
24884                "#endif",
24885                Style);
24886 
24887   verifyFormat("#if 0\n"
24888                "#elif 1\n"
24889                "#endif\n"
24890                "void f() {\n"
24891                "  if (a) {\n"
24892                "    g();\n"
24893                "  }\n"
24894                "}",
24895                "#if 0\n"
24896                "#elif 1\n"
24897                "#endif\n"
24898                "void f() {\n"
24899                "  if (a) g();\n"
24900                "}",
24901                Style);
24902 
24903   Style.ColumnLimit = 15;
24904 
24905   verifyFormat("#define A     \\\n"
24906                "  if (a)      \\\n"
24907                "    f();",
24908                Style);
24909 
24910   verifyFormat("if (a + b >\n"
24911                "    c) {\n"
24912                "  f();\n"
24913                "}",
24914                "if (a + b > c)\n"
24915                "  f();",
24916                Style);
24917 }
24918 
24919 TEST_F(FormatTest, RemoveBraces) {
24920   FormatStyle Style = getLLVMStyle();
24921   Style.RemoveBracesLLVM = true;
24922 
24923   // The following eight test cases are fully-braced versions of the examples at
24924   // "llvm.org/docs/CodingStandards.html#don-t-use-braces-on-simple-single-
24925   // statement-bodies-of-if-else-loop-statements".
24926 
24927   // 1. Omit the braces, since the body is simple and clearly associated with
24928   // the if.
24929   verifyFormat("if (isa<FunctionDecl>(D))\n"
24930                "  handleFunctionDecl(D);\n"
24931                "else if (isa<VarDecl>(D))\n"
24932                "  handleVarDecl(D);",
24933                "if (isa<FunctionDecl>(D)) {\n"
24934                "  handleFunctionDecl(D);\n"
24935                "} else if (isa<VarDecl>(D)) {\n"
24936                "  handleVarDecl(D);\n"
24937                "}",
24938                Style);
24939 
24940   // 2. Here we document the condition itself and not the body.
24941   verifyFormat("if (isa<VarDecl>(D)) {\n"
24942                "  // It is necessary that we explain the situation with this\n"
24943                "  // surprisingly long comment, so it would be unclear\n"
24944                "  // without the braces whether the following statement is in\n"
24945                "  // the scope of the `if`.\n"
24946                "  // Because the condition is documented, we can't really\n"
24947                "  // hoist this comment that applies to the body above the\n"
24948                "  // if.\n"
24949                "  handleOtherDecl(D);\n"
24950                "}",
24951                Style);
24952 
24953   // 3. Use braces on the outer `if` to avoid a potential dangling else
24954   // situation.
24955   verifyFormat("if (isa<VarDecl>(D)) {\n"
24956                "  for (auto *A : D.attrs())\n"
24957                "    if (shouldProcessAttr(A))\n"
24958                "      handleAttr(A);\n"
24959                "}",
24960                "if (isa<VarDecl>(D)) {\n"
24961                "  for (auto *A : D.attrs()) {\n"
24962                "    if (shouldProcessAttr(A)) {\n"
24963                "      handleAttr(A);\n"
24964                "    }\n"
24965                "  }\n"
24966                "}",
24967                Style);
24968 
24969   // 4. Use braces for the `if` block to keep it uniform with the else block.
24970   verifyFormat("if (isa<FunctionDecl>(D)) {\n"
24971                "  handleFunctionDecl(D);\n"
24972                "} else {\n"
24973                "  // In this else case, it is necessary that we explain the\n"
24974                "  // situation with this surprisingly long comment, so it\n"
24975                "  // would be unclear without the braces whether the\n"
24976                "  // following statement is in the scope of the `if`.\n"
24977                "  handleOtherDecl(D);\n"
24978                "}",
24979                Style);
24980 
24981   // 5. This should also omit braces.  The `for` loop contains only a single
24982   // statement, so it shouldn't have braces.  The `if` also only contains a
24983   // single simple statement (the for loop), so it also should omit braces.
24984   verifyFormat("if (isa<FunctionDecl>(D))\n"
24985                "  for (auto *A : D.attrs())\n"
24986                "    handleAttr(A);",
24987                "if (isa<FunctionDecl>(D)) {\n"
24988                "  for (auto *A : D.attrs()) {\n"
24989                "    handleAttr(A);\n"
24990                "  }\n"
24991                "}",
24992                Style);
24993 
24994   // 6. Use braces for the outer `if` since the nested `for` is braced.
24995   verifyFormat("if (isa<FunctionDecl>(D)) {\n"
24996                "  for (auto *A : D.attrs()) {\n"
24997                "    // In this for loop body, it is necessary that we explain\n"
24998                "    // the situation with this surprisingly long comment,\n"
24999                "    // forcing braces on the `for` block.\n"
25000                "    handleAttr(A);\n"
25001                "  }\n"
25002                "}",
25003                Style);
25004 
25005   // 7. Use braces on the outer block because there are more than two levels of
25006   // nesting.
25007   verifyFormat("if (isa<FunctionDecl>(D)) {\n"
25008                "  for (auto *A : D.attrs())\n"
25009                "    for (ssize_t i : llvm::seq<ssize_t>(count))\n"
25010                "      handleAttrOnDecl(D, A, i);\n"
25011                "}",
25012                "if (isa<FunctionDecl>(D)) {\n"
25013                "  for (auto *A : D.attrs()) {\n"
25014                "    for (ssize_t i : llvm::seq<ssize_t>(count)) {\n"
25015                "      handleAttrOnDecl(D, A, i);\n"
25016                "    }\n"
25017                "  }\n"
25018                "}",
25019                Style);
25020 
25021   // 8. Use braces on the outer block because of a nested `if`, otherwise the
25022   // compiler would warn: `add explicit braces to avoid dangling else`
25023   verifyFormat("if (auto *D = dyn_cast<FunctionDecl>(D)) {\n"
25024                "  if (shouldProcess(D))\n"
25025                "    handleVarDecl(D);\n"
25026                "  else\n"
25027                "    markAsIgnored(D);\n"
25028                "}",
25029                "if (auto *D = dyn_cast<FunctionDecl>(D)) {\n"
25030                "  if (shouldProcess(D)) {\n"
25031                "    handleVarDecl(D);\n"
25032                "  } else {\n"
25033                "    markAsIgnored(D);\n"
25034                "  }\n"
25035                "}",
25036                Style);
25037 
25038   verifyFormat("// clang-format off\n"
25039                "// comment\n"
25040                "while (i > 0) { --i; }\n"
25041                "// clang-format on\n"
25042                "while (j < 0)\n"
25043                "  ++j;",
25044                "// clang-format off\n"
25045                "// comment\n"
25046                "while (i > 0) { --i; }\n"
25047                "// clang-format on\n"
25048                "while (j < 0) { ++j; }",
25049                Style);
25050 
25051   verifyFormat("if (a)\n"
25052                "  b; // comment\n"
25053                "else if (c)\n"
25054                "  d; /* comment */\n"
25055                "else\n"
25056                "  e;",
25057                "if (a) {\n"
25058                "  b; // comment\n"
25059                "} else if (c) {\n"
25060                "  d; /* comment */\n"
25061                "} else {\n"
25062                "  e;\n"
25063                "}",
25064                Style);
25065 
25066   verifyFormat("if (a) {\n"
25067                "  b;\n"
25068                "  c;\n"
25069                "} else if (d) {\n"
25070                "  e;\n"
25071                "}",
25072                Style);
25073 
25074   verifyFormat("if (a) {\n"
25075                "#undef NDEBUG\n"
25076                "  b;\n"
25077                "} else {\n"
25078                "  c;\n"
25079                "}",
25080                Style);
25081 
25082   verifyFormat("if (a) {\n"
25083                "  // comment\n"
25084                "} else if (b) {\n"
25085                "  c;\n"
25086                "}",
25087                Style);
25088 
25089   verifyFormat("if (a) {\n"
25090                "  b;\n"
25091                "} else {\n"
25092                "  { c; }\n"
25093                "}",
25094                Style);
25095 
25096   verifyFormat("if (a) {\n"
25097                "  if (b) // comment\n"
25098                "    c;\n"
25099                "} else if (d) {\n"
25100                "  e;\n"
25101                "}",
25102                "if (a) {\n"
25103                "  if (b) { // comment\n"
25104                "    c;\n"
25105                "  }\n"
25106                "} else if (d) {\n"
25107                "  e;\n"
25108                "}",
25109                Style);
25110 
25111   verifyFormat("if (a) {\n"
25112                "  if (b) {\n"
25113                "    c;\n"
25114                "    // comment\n"
25115                "  } else if (d) {\n"
25116                "    e;\n"
25117                "  }\n"
25118                "}",
25119                Style);
25120 
25121   verifyFormat("if (a) {\n"
25122                "  if (b)\n"
25123                "    c;\n"
25124                "}",
25125                "if (a) {\n"
25126                "  if (b) {\n"
25127                "    c;\n"
25128                "  }\n"
25129                "}",
25130                Style);
25131 
25132   verifyFormat("if (a)\n"
25133                "  if (b)\n"
25134                "    c;\n"
25135                "  else\n"
25136                "    d;\n"
25137                "else\n"
25138                "  e;",
25139                "if (a) {\n"
25140                "  if (b) {\n"
25141                "    c;\n"
25142                "  } else {\n"
25143                "    d;\n"
25144                "  }\n"
25145                "} else {\n"
25146                "  e;\n"
25147                "}",
25148                Style);
25149 
25150   verifyFormat("if (a) {\n"
25151                "  // comment\n"
25152                "  if (b)\n"
25153                "    c;\n"
25154                "  else if (d)\n"
25155                "    e;\n"
25156                "} else {\n"
25157                "  g;\n"
25158                "}",
25159                "if (a) {\n"
25160                "  // comment\n"
25161                "  if (b) {\n"
25162                "    c;\n"
25163                "  } else if (d) {\n"
25164                "    e;\n"
25165                "  }\n"
25166                "} else {\n"
25167                "  g;\n"
25168                "}",
25169                Style);
25170 
25171   verifyFormat("if (a)\n"
25172                "  b;\n"
25173                "else if (c)\n"
25174                "  d;\n"
25175                "else\n"
25176                "  e;",
25177                "if (a) {\n"
25178                "  b;\n"
25179                "} else {\n"
25180                "  if (c) {\n"
25181                "    d;\n"
25182                "  } else {\n"
25183                "    e;\n"
25184                "  }\n"
25185                "}",
25186                Style);
25187 
25188   verifyFormat("if (a) {\n"
25189                "  if (b)\n"
25190                "    c;\n"
25191                "  else if (d)\n"
25192                "    e;\n"
25193                "} else {\n"
25194                "  g;\n"
25195                "}",
25196                "if (a) {\n"
25197                "  if (b)\n"
25198                "    c;\n"
25199                "  else {\n"
25200                "    if (d)\n"
25201                "      e;\n"
25202                "  }\n"
25203                "} else {\n"
25204                "  g;\n"
25205                "}",
25206                Style);
25207 
25208   verifyFormat("if (a)\n"
25209                "  b;\n"
25210                "else if (c)\n"
25211                "  while (d)\n"
25212                "    e;\n"
25213                "// comment",
25214                "if (a)\n"
25215                "{\n"
25216                "  b;\n"
25217                "} else if (c) {\n"
25218                "  while (d) {\n"
25219                "    e;\n"
25220                "  }\n"
25221                "}\n"
25222                "// comment",
25223                Style);
25224 
25225   verifyFormat("if (a) {\n"
25226                "  b;\n"
25227                "} else if (c) {\n"
25228                "  d;\n"
25229                "} else {\n"
25230                "  e;\n"
25231                "  g;\n"
25232                "}",
25233                Style);
25234 
25235   verifyFormat("if (a) {\n"
25236                "  b;\n"
25237                "} else if (c) {\n"
25238                "  d;\n"
25239                "} else {\n"
25240                "  e;\n"
25241                "} // comment",
25242                Style);
25243 
25244   verifyFormat("int abs = [](int i) {\n"
25245                "  if (i >= 0)\n"
25246                "    return i;\n"
25247                "  return -i;\n"
25248                "};",
25249                "int abs = [](int i) {\n"
25250                "  if (i >= 0) {\n"
25251                "    return i;\n"
25252                "  }\n"
25253                "  return -i;\n"
25254                "};",
25255                Style);
25256 
25257   verifyFormat("if (a)\n"
25258                "  foo();\n"
25259                "else\n"
25260                "  bar();",
25261                "if (a)\n"
25262                "{\n"
25263                "  foo();\n"
25264                "}\n"
25265                "else\n"
25266                "{\n"
25267                "  bar();\n"
25268                "}",
25269                Style);
25270 
25271   verifyFormat("if (a) {\n"
25272                "Label:\n"
25273                "}",
25274                Style);
25275 
25276   verifyFormat("if (a) {\n"
25277                "Label:\n"
25278                "  f();\n"
25279                "}",
25280                Style);
25281 
25282   verifyFormat("if (a) {\n"
25283                "  f();\n"
25284                "Label:\n"
25285                "}",
25286                Style);
25287 
25288   // FIXME: See https://github.com/llvm/llvm-project/issues/53543.
25289 #if 0
25290   Style.ColumnLimit = 65;
25291 
25292   verifyFormat("if (condition) {\n"
25293                "  ff(Indices,\n"
25294                "     [&](unsigned LHSI, unsigned RHSI) { return true; });\n"
25295                "} else {\n"
25296                "  ff(Indices,\n"
25297                "     [&](unsigned LHSI, unsigned RHSI) { return true; });\n"
25298                "}",
25299                Style);
25300 
25301   Style.ColumnLimit = 20;
25302 
25303   verifyFormat("if (a) {\n"
25304                "  b = c + // 1 -\n"
25305                "      d;\n"
25306                "}",
25307                Style);
25308 
25309   verifyFormat("if (a) {\n"
25310                "  b = c >= 0 ? d\n"
25311                "             : e;\n"
25312                "}",
25313                "if (a) {\n"
25314                "  b = c >= 0 ? d : e;\n"
25315                "}",
25316                Style);
25317 #endif
25318 
25319   Style.ColumnLimit = 20;
25320 
25321   verifyFormat("if (a)\n"
25322                "  b = c > 0 ? d : e;",
25323                "if (a) {\n"
25324                "  b = c > 0 ? d : e;\n"
25325                "}",
25326                Style);
25327 
25328   Style.ColumnLimit = 0;
25329 
25330   verifyFormat("if (a)\n"
25331                "  b234567890223456789032345678904234567890 = "
25332                "c234567890223456789032345678904234567890;",
25333                "if (a) {\n"
25334                "  b234567890223456789032345678904234567890 = "
25335                "c234567890223456789032345678904234567890;\n"
25336                "}",
25337                Style);
25338 }
25339 
25340 TEST_F(FormatTest, AlignAfterOpenBracketBlockIndent) {
25341   auto Style = getLLVMStyle();
25342 
25343   StringRef Short = "functionCall(paramA, paramB, paramC);\n"
25344                     "void functionDecl(int a, int b, int c);";
25345 
25346   StringRef Medium = "functionCall(paramA, paramB, paramC, paramD, paramE, "
25347                      "paramF, paramG, paramH, paramI);\n"
25348                      "void functionDecl(int argumentA, int argumentB, int "
25349                      "argumentC, int argumentD, int argumentE);";
25350 
25351   verifyFormat(Short, Style);
25352 
25353   StringRef NoBreak = "functionCall(paramA, paramB, paramC, paramD, paramE, "
25354                       "paramF, paramG, paramH,\n"
25355                       "             paramI);\n"
25356                       "void functionDecl(int argumentA, int argumentB, int "
25357                       "argumentC, int argumentD,\n"
25358                       "                  int argumentE);";
25359 
25360   verifyFormat(NoBreak, Medium, Style);
25361   verifyFormat(NoBreak,
25362                "functionCall(\n"
25363                "    paramA,\n"
25364                "    paramB,\n"
25365                "    paramC,\n"
25366                "    paramD,\n"
25367                "    paramE,\n"
25368                "    paramF,\n"
25369                "    paramG,\n"
25370                "    paramH,\n"
25371                "    paramI\n"
25372                ");\n"
25373                "void functionDecl(\n"
25374                "    int argumentA,\n"
25375                "    int argumentB,\n"
25376                "    int argumentC,\n"
25377                "    int argumentD,\n"
25378                "    int argumentE\n"
25379                ");",
25380                Style);
25381 
25382   verifyFormat("outerFunctionCall(nestedFunctionCall(argument1),\n"
25383                "                  nestedLongFunctionCall(argument1, "
25384                "argument2, argument3,\n"
25385                "                                         argument4, "
25386                "argument5));",
25387                Style);
25388 
25389   Style.AlignAfterOpenBracket = FormatStyle::BAS_BlockIndent;
25390 
25391   verifyFormat(Short, Style);
25392   verifyFormat(
25393       "functionCall(\n"
25394       "    paramA, paramB, paramC, paramD, paramE, paramF, paramG, paramH, "
25395       "paramI\n"
25396       ");\n"
25397       "void functionDecl(\n"
25398       "    int argumentA, int argumentB, int argumentC, int argumentD, int "
25399       "argumentE\n"
25400       ");",
25401       Medium, Style);
25402 
25403   Style.AllowAllArgumentsOnNextLine = false;
25404   Style.AllowAllParametersOfDeclarationOnNextLine = false;
25405 
25406   verifyFormat(Short, Style);
25407   verifyFormat(
25408       "functionCall(\n"
25409       "    paramA, paramB, paramC, paramD, paramE, paramF, paramG, paramH, "
25410       "paramI\n"
25411       ");\n"
25412       "void functionDecl(\n"
25413       "    int argumentA, int argumentB, int argumentC, int argumentD, int "
25414       "argumentE\n"
25415       ");",
25416       Medium, Style);
25417 
25418   Style.BinPackArguments = false;
25419   Style.BinPackParameters = false;
25420 
25421   verifyFormat(Short, Style);
25422 
25423   verifyFormat("functionCall(\n"
25424                "    paramA,\n"
25425                "    paramB,\n"
25426                "    paramC,\n"
25427                "    paramD,\n"
25428                "    paramE,\n"
25429                "    paramF,\n"
25430                "    paramG,\n"
25431                "    paramH,\n"
25432                "    paramI\n"
25433                ");\n"
25434                "void functionDecl(\n"
25435                "    int argumentA,\n"
25436                "    int argumentB,\n"
25437                "    int argumentC,\n"
25438                "    int argumentD,\n"
25439                "    int argumentE\n"
25440                ");",
25441                Medium, Style);
25442 
25443   verifyFormat("outerFunctionCall(\n"
25444                "    nestedFunctionCall(argument1),\n"
25445                "    nestedLongFunctionCall(\n"
25446                "        argument1,\n"
25447                "        argument2,\n"
25448                "        argument3,\n"
25449                "        argument4,\n"
25450                "        argument5\n"
25451                "    )\n"
25452                ");",
25453                Style);
25454 
25455   verifyFormat("int a = (int)b;", Style);
25456   verifyFormat("int a = (int)b;",
25457                "int a = (\n"
25458                "    int\n"
25459                ") b;",
25460                Style);
25461 
25462   verifyFormat("return (true);", Style);
25463   verifyFormat("return (true);",
25464                "return (\n"
25465                "    true\n"
25466                ");",
25467                Style);
25468 
25469   verifyFormat("void foo();", Style);
25470   verifyFormat("void foo();",
25471                "void foo(\n"
25472                ");",
25473                Style);
25474 
25475   verifyFormat("void foo() {}", Style);
25476   verifyFormat("void foo() {}",
25477                "void foo(\n"
25478                ") {\n"
25479                "}",
25480                Style);
25481 
25482   verifyFormat("auto string = std::string();", Style);
25483   verifyFormat("auto string = std::string();",
25484                "auto string = std::string(\n"
25485                ");",
25486                Style);
25487 
25488   verifyFormat("void (*functionPointer)() = nullptr;", Style);
25489   verifyFormat("void (*functionPointer)() = nullptr;",
25490                "void (\n"
25491                "    *functionPointer\n"
25492                ")\n"
25493                "(\n"
25494                ") = nullptr;",
25495                Style);
25496 }
25497 
25498 TEST_F(FormatTest, AlignAfterOpenBracketBlockIndentIfStatement) {
25499   auto Style = getLLVMStyle();
25500 
25501   verifyFormat("if (foo()) {\n"
25502                "  return;\n"
25503                "}",
25504                Style);
25505 
25506   verifyFormat("if (quitelongarg !=\n"
25507                "    (alsolongarg - 1)) { // ABC is a very longgggggggggggg "
25508                "comment\n"
25509                "  return;\n"
25510                "}",
25511                Style);
25512 
25513   Style.AlignAfterOpenBracket = FormatStyle::BAS_BlockIndent;
25514 
25515   verifyFormat("if (foo()) {\n"
25516                "  return;\n"
25517                "}",
25518                Style);
25519 
25520   verifyFormat("if (quitelongarg !=\n"
25521                "    (alsolongarg - 1)) { // ABC is a very longgggggggggggg "
25522                "comment\n"
25523                "  return;\n"
25524                "}",
25525                Style);
25526 }
25527 
25528 TEST_F(FormatTest, AlignAfterOpenBracketBlockIndentForStatement) {
25529   auto Style = getLLVMStyle();
25530 
25531   verifyFormat("for (int i = 0; i < 5; ++i) {\n"
25532                "  doSomething();\n"
25533                "}",
25534                Style);
25535 
25536   verifyFormat("for (int myReallyLongCountVariable = 0; "
25537                "myReallyLongCountVariable < count;\n"
25538                "     myReallyLongCountVariable++) {\n"
25539                "  doSomething();\n"
25540                "}",
25541                Style);
25542 
25543   Style.AlignAfterOpenBracket = FormatStyle::BAS_BlockIndent;
25544 
25545   verifyFormat("for (int i = 0; i < 5; ++i) {\n"
25546                "  doSomething();\n"
25547                "}",
25548                Style);
25549 
25550   verifyFormat("for (int myReallyLongCountVariable = 0; "
25551                "myReallyLongCountVariable < count;\n"
25552                "     myReallyLongCountVariable++) {\n"
25553                "  doSomething();\n"
25554                "}",
25555                Style);
25556 }
25557 
25558 TEST_F(FormatTest, UnderstandsDigraphs) {
25559   verifyFormat("int arr<:5:> = {};");
25560   verifyFormat("int arr[5] = <%%>;");
25561   verifyFormat("int arr<:::qualified_variable:> = {};");
25562   verifyFormat("int arr[::qualified_variable] = <%%>;");
25563   verifyFormat("%:include <header>");
25564   verifyFormat("%:define A x##y");
25565   verifyFormat("#define A x%:%:y");
25566 }
25567 
25568 TEST_F(FormatTest, AlignArrayOfStructuresLeftAlignmentNonSquare) {
25569   auto Style = getLLVMStyle();
25570   Style.AlignArrayOfStructures = FormatStyle::AIAS_Left;
25571   Style.AlignConsecutiveAssignments.Enabled = true;
25572   Style.AlignConsecutiveDeclarations.Enabled = true;
25573 
25574   // The AlignArray code is incorrect for non square Arrays and can cause
25575   // crashes, these tests assert that the array is not changed but will
25576   // also act as regression tests for when it is properly fixed
25577   verifyFormat("struct test demo[] = {\n"
25578                "    {1, 2},\n"
25579                "    {3, 4, 5},\n"
25580                "    {6, 7, 8}\n"
25581                "};",
25582                Style);
25583   verifyFormat("struct test demo[] = {\n"
25584                "    {1, 2, 3, 4, 5},\n"
25585                "    {3, 4, 5},\n"
25586                "    {6, 7, 8}\n"
25587                "};",
25588                Style);
25589   verifyFormat("struct test demo[] = {\n"
25590                "    {1, 2, 3, 4, 5},\n"
25591                "    {3, 4, 5},\n"
25592                "    {6, 7, 8, 9, 10, 11, 12}\n"
25593                "};",
25594                Style);
25595   verifyFormat("struct test demo[] = {\n"
25596                "    {1, 2, 3},\n"
25597                "    {3, 4, 5},\n"
25598                "    {6, 7, 8, 9, 10, 11, 12}\n"
25599                "};",
25600                Style);
25601 
25602   verifyFormat("S{\n"
25603                "    {},\n"
25604                "    {},\n"
25605                "    {a, b}\n"
25606                "};",
25607                Style);
25608   verifyFormat("S{\n"
25609                "    {},\n"
25610                "    {},\n"
25611                "    {a, b},\n"
25612                "};",
25613                Style);
25614   verifyFormat("void foo() {\n"
25615                "  auto thing = test{\n"
25616                "      {\n"
25617                "       {13}, {something}, // A\n"
25618                "      }\n"
25619                "  };\n"
25620                "}",
25621                "void foo() {\n"
25622                "  auto thing = test{\n"
25623                "      {\n"
25624                "       {13},\n"
25625                "       {something}, // A\n"
25626                "      }\n"
25627                "  };\n"
25628                "}",
25629                Style);
25630 }
25631 
25632 TEST_F(FormatTest, AlignArrayOfStructuresRightAlignmentNonSquare) {
25633   auto Style = getLLVMStyle();
25634   Style.AlignArrayOfStructures = FormatStyle::AIAS_Right;
25635   Style.AlignConsecutiveAssignments.Enabled = true;
25636   Style.AlignConsecutiveDeclarations.Enabled = true;
25637 
25638   // The AlignArray code is incorrect for non square Arrays and can cause
25639   // crashes, these tests assert that the array is not changed but will
25640   // also act as regression tests for when it is properly fixed
25641   verifyFormat("struct test demo[] = {\n"
25642                "    {1, 2},\n"
25643                "    {3, 4, 5},\n"
25644                "    {6, 7, 8}\n"
25645                "};",
25646                Style);
25647   verifyFormat("struct test demo[] = {\n"
25648                "    {1, 2, 3, 4, 5},\n"
25649                "    {3, 4, 5},\n"
25650                "    {6, 7, 8}\n"
25651                "};",
25652                Style);
25653   verifyFormat("struct test demo[] = {\n"
25654                "    {1, 2, 3, 4, 5},\n"
25655                "    {3, 4, 5},\n"
25656                "    {6, 7, 8, 9, 10, 11, 12}\n"
25657                "};",
25658                Style);
25659   verifyFormat("struct test demo[] = {\n"
25660                "    {1, 2, 3},\n"
25661                "    {3, 4, 5},\n"
25662                "    {6, 7, 8, 9, 10, 11, 12}\n"
25663                "};",
25664                Style);
25665 
25666   verifyFormat("S{\n"
25667                "    {},\n"
25668                "    {},\n"
25669                "    {a, b}\n"
25670                "};",
25671                Style);
25672   verifyFormat("S{\n"
25673                "    {},\n"
25674                "    {},\n"
25675                "    {a, b},\n"
25676                "};",
25677                Style);
25678   verifyFormat("void foo() {\n"
25679                "  auto thing = test{\n"
25680                "      {\n"
25681                "       {13}, {something}, // A\n"
25682                "      }\n"
25683                "  };\n"
25684                "}",
25685                "void foo() {\n"
25686                "  auto thing = test{\n"
25687                "      {\n"
25688                "       {13},\n"
25689                "       {something}, // A\n"
25690                "      }\n"
25691                "  };\n"
25692                "}",
25693                Style);
25694 }
25695 
25696 TEST_F(FormatTest, FormatsVariableTemplates) {
25697   verifyFormat("inline bool var = is_integral_v<int> && is_signed_v<int>;");
25698   verifyFormat("template <typename T> "
25699                "inline bool var = is_integral_v<T> && is_signed_v<T>;");
25700 }
25701 
25702 } // namespace
25703 } // namespace format
25704 } // namespace clang
25705