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::internal::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   // ...but do keep inlining and removing empty lines for non-block extern "C"
266   // functions.
267   verifyFormat("extern \"C\" int f() { return 42; }", getGoogleStyle());
268   EXPECT_EQ("extern \"C\" int f() {\n"
269             "  int i = 42;\n"
270             "  return i;\n"
271             "}",
272             format("extern \"C\" int f() {\n"
273                    "\n"
274                    "  int i = 42;\n"
275                    "  return i;\n"
276                    "}",
277                    getGoogleStyle()));
278 
279   // Remove empty lines at the beginning and end of blocks.
280   EXPECT_EQ("void f() {\n"
281             "\n"
282             "  if (a) {\n"
283             "\n"
284             "    f();\n"
285             "  }\n"
286             "}",
287             format("void f() {\n"
288                    "\n"
289                    "  if (a) {\n"
290                    "\n"
291                    "    f();\n"
292                    "\n"
293                    "  }\n"
294                    "\n"
295                    "}",
296                    getLLVMStyle()));
297   EXPECT_EQ("void f() {\n"
298             "  if (a) {\n"
299             "    f();\n"
300             "  }\n"
301             "}",
302             format("void f() {\n"
303                    "\n"
304                    "  if (a) {\n"
305                    "\n"
306                    "    f();\n"
307                    "\n"
308                    "  }\n"
309                    "\n"
310                    "}",
311                    getGoogleStyle()));
312 
313   // Don't remove empty lines in more complex control statements.
314   EXPECT_EQ("void f() {\n"
315             "  if (a) {\n"
316             "    f();\n"
317             "\n"
318             "  } else if (b) {\n"
319             "    f();\n"
320             "  }\n"
321             "}",
322             format("void f() {\n"
323                    "  if (a) {\n"
324                    "    f();\n"
325                    "\n"
326                    "  } else if (b) {\n"
327                    "    f();\n"
328                    "\n"
329                    "  }\n"
330                    "\n"
331                    "}"));
332 
333   // Don't remove empty lines before namespace endings.
334   FormatStyle LLVMWithNoNamespaceFix = getLLVMStyle();
335   LLVMWithNoNamespaceFix.FixNamespaceComments = false;
336   EXPECT_EQ("namespace {\n"
337             "int i;\n"
338             "\n"
339             "}",
340             format("namespace {\n"
341                    "int i;\n"
342                    "\n"
343                    "}",
344                    LLVMWithNoNamespaceFix));
345   EXPECT_EQ("namespace {\n"
346             "int i;\n"
347             "}",
348             format("namespace {\n"
349                    "int i;\n"
350                    "}",
351                    LLVMWithNoNamespaceFix));
352   EXPECT_EQ("namespace {\n"
353             "int i;\n"
354             "\n"
355             "};",
356             format("namespace {\n"
357                    "int i;\n"
358                    "\n"
359                    "};",
360                    LLVMWithNoNamespaceFix));
361   EXPECT_EQ("namespace {\n"
362             "int i;\n"
363             "};",
364             format("namespace {\n"
365                    "int i;\n"
366                    "};",
367                    LLVMWithNoNamespaceFix));
368   EXPECT_EQ("namespace {\n"
369             "int i;\n"
370             "\n"
371             "}",
372             format("namespace {\n"
373                    "int i;\n"
374                    "\n"
375                    "}"));
376   EXPECT_EQ("namespace {\n"
377             "int i;\n"
378             "\n"
379             "} // namespace",
380             format("namespace {\n"
381                    "int i;\n"
382                    "\n"
383                    "}  // namespace"));
384 
385   FormatStyle Style = getLLVMStyle();
386   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
387   Style.MaxEmptyLinesToKeep = 2;
388   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
389   Style.BraceWrapping.AfterClass = true;
390   Style.BraceWrapping.AfterFunction = true;
391   Style.KeepEmptyLinesAtTheStartOfBlocks = false;
392 
393   EXPECT_EQ("class Foo\n"
394             "{\n"
395             "  Foo() {}\n"
396             "\n"
397             "  void funk() {}\n"
398             "};",
399             format("class Foo\n"
400                    "{\n"
401                    "  Foo()\n"
402                    "  {\n"
403                    "  }\n"
404                    "\n"
405                    "  void funk() {}\n"
406                    "};",
407                    Style));
408 }
409 
410 TEST_F(FormatTest, RecognizesBinaryOperatorKeywords) {
411   verifyFormat("x = (a) and (b);");
412   verifyFormat("x = (a) or (b);");
413   verifyFormat("x = (a) bitand (b);");
414   verifyFormat("x = (a) bitor (b);");
415   verifyFormat("x = (a) not_eq (b);");
416   verifyFormat("x = (a) and_eq (b);");
417   verifyFormat("x = (a) or_eq (b);");
418   verifyFormat("x = (a) xor (b);");
419 }
420 
421 TEST_F(FormatTest, RecognizesUnaryOperatorKeywords) {
422   verifyFormat("x = compl(a);");
423   verifyFormat("x = not(a);");
424   verifyFormat("x = bitand(a);");
425   // Unary operator must not be merged with the next identifier
426   verifyFormat("x = compl a;");
427   verifyFormat("x = not a;");
428   verifyFormat("x = bitand a;");
429 }
430 
431 //===----------------------------------------------------------------------===//
432 // Tests for control statements.
433 //===----------------------------------------------------------------------===//
434 
435 TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
436   verifyFormat("if (true)\n  f();\ng();");
437   verifyFormat("if (a)\n  if (b)\n    if (c)\n      g();\nh();");
438   verifyFormat("if (a)\n  if (b) {\n    f();\n  }\ng();");
439   verifyFormat("if constexpr (true)\n"
440                "  f();\ng();");
441   verifyFormat("if CONSTEXPR (true)\n"
442                "  f();\ng();");
443   verifyFormat("if constexpr (a)\n"
444                "  if constexpr (b)\n"
445                "    if constexpr (c)\n"
446                "      g();\n"
447                "h();");
448   verifyFormat("if CONSTEXPR (a)\n"
449                "  if CONSTEXPR (b)\n"
450                "    if CONSTEXPR (c)\n"
451                "      g();\n"
452                "h();");
453   verifyFormat("if constexpr (a)\n"
454                "  if constexpr (b) {\n"
455                "    f();\n"
456                "  }\n"
457                "g();");
458   verifyFormat("if CONSTEXPR (a)\n"
459                "  if CONSTEXPR (b) {\n"
460                "    f();\n"
461                "  }\n"
462                "g();");
463 
464   FormatStyle AllowsMergedIf = getLLVMStyle();
465   AllowsMergedIf.AlignEscapedNewlines = FormatStyle::ENAS_Left;
466   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
467       FormatStyle::SIS_WithoutElse;
468   verifyFormat("if (a)\n"
469                "  // comment\n"
470                "  f();",
471                AllowsMergedIf);
472   verifyFormat("{\n"
473                "  if (a)\n"
474                "  label:\n"
475                "    f();\n"
476                "}",
477                AllowsMergedIf);
478   verifyFormat("#define A \\\n"
479                "  if (a)  \\\n"
480                "  label:  \\\n"
481                "    f()",
482                AllowsMergedIf);
483   verifyFormat("if (a)\n"
484                "  ;",
485                AllowsMergedIf);
486   verifyFormat("if (a)\n"
487                "  if (b) return;",
488                AllowsMergedIf);
489 
490   verifyFormat("if (a) // Can't merge this\n"
491                "  f();\n",
492                AllowsMergedIf);
493   verifyFormat("if (a) /* still don't merge */\n"
494                "  f();",
495                AllowsMergedIf);
496   verifyFormat("if (a) { // Never merge this\n"
497                "  f();\n"
498                "}",
499                AllowsMergedIf);
500   verifyFormat("if (a) { /* Never merge this */\n"
501                "  f();\n"
502                "}",
503                AllowsMergedIf);
504 
505   AllowsMergedIf.ColumnLimit = 14;
506   verifyFormat("if (a) return;", AllowsMergedIf);
507   verifyFormat("if (aaaaaaaaa)\n"
508                "  return;",
509                AllowsMergedIf);
510 
511   AllowsMergedIf.ColumnLimit = 13;
512   verifyFormat("if (a)\n  return;", AllowsMergedIf);
513 }
514 
515 TEST_F(FormatTest, FormatIfWithoutCompoundStatementButElseWith) {
516   FormatStyle AllowsMergedIf = getLLVMStyle();
517   AllowsMergedIf.AlignEscapedNewlines = FormatStyle::ENAS_Left;
518   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
519       FormatStyle::SIS_WithoutElse;
520   verifyFormat("if (a)\n"
521                "  f();\n"
522                "else {\n"
523                "  g();\n"
524                "}",
525                AllowsMergedIf);
526   verifyFormat("if (a)\n"
527                "  f();\n"
528                "else\n"
529                "  g();\n",
530                AllowsMergedIf);
531 
532   AllowsMergedIf.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Always;
533 
534   verifyFormat("if (a) f();\n"
535                "else {\n"
536                "  g();\n"
537                "}",
538                AllowsMergedIf);
539   verifyFormat("if (a) f();\n"
540                "else {\n"
541                "  if (a) f();\n"
542                "  else {\n"
543                "    g();\n"
544                "  }\n"
545                "  g();\n"
546                "}",
547                AllowsMergedIf);
548 }
549 
550 TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) {
551   FormatStyle AllowsMergedLoops = getLLVMStyle();
552   AllowsMergedLoops.AllowShortLoopsOnASingleLine = true;
553   verifyFormat("while (true) continue;", AllowsMergedLoops);
554   verifyFormat("for (;;) continue;", AllowsMergedLoops);
555   verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops);
556   verifyFormat("while (true)\n"
557                "  ;",
558                AllowsMergedLoops);
559   verifyFormat("for (;;)\n"
560                "  ;",
561                AllowsMergedLoops);
562   verifyFormat("for (;;)\n"
563                "  for (;;) continue;",
564                AllowsMergedLoops);
565   verifyFormat("for (;;) // Can't merge this\n"
566                "  continue;",
567                AllowsMergedLoops);
568   verifyFormat("for (;;) /* still don't merge */\n"
569                "  continue;",
570                AllowsMergedLoops);
571   verifyFormat("do a++;\n"
572                "while (true);",
573                AllowsMergedLoops);
574   verifyFormat("do /* Don't merge */\n"
575                "  a++;\n"
576                "while (true);",
577                AllowsMergedLoops);
578   verifyFormat("do // Don't merge\n"
579                "  a++;\n"
580                "while (true);",
581                AllowsMergedLoops);
582   verifyFormat("do\n"
583                "  // Don't merge\n"
584                "  a++;\n"
585                "while (true);",
586                AllowsMergedLoops);
587   // Without braces labels are interpreted differently.
588   verifyFormat("{\n"
589                "  do\n"
590                "  label:\n"
591                "    a++;\n"
592                "  while (true);\n"
593                "}",
594                AllowsMergedLoops);
595 }
596 
597 TEST_F(FormatTest, FormatShortBracedStatements) {
598   FormatStyle AllowSimpleBracedStatements = getLLVMStyle();
599   AllowSimpleBracedStatements.ColumnLimit = 40;
600   AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine =
601       FormatStyle::SBS_Always;
602 
603   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
604       FormatStyle::SIS_WithoutElse;
605   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true;
606 
607   AllowSimpleBracedStatements.BreakBeforeBraces = FormatStyle::BS_Custom;
608   AllowSimpleBracedStatements.BraceWrapping.AfterFunction = true;
609   AllowSimpleBracedStatements.BraceWrapping.SplitEmptyRecord = false;
610 
611   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
612   verifyFormat("if constexpr (true) {}", AllowSimpleBracedStatements);
613   verifyFormat("if CONSTEXPR (true) {}", AllowSimpleBracedStatements);
614   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
615   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
616   verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements);
617   verifyFormat("if constexpr (true) { f(); }", AllowSimpleBracedStatements);
618   verifyFormat("if CONSTEXPR (true) { f(); }", AllowSimpleBracedStatements);
619   verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements);
620   verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements);
621   verifyFormat("if (true) { fffffffffffffffffffffff(); }",
622                AllowSimpleBracedStatements);
623   verifyFormat("if (true) {\n"
624                "  ffffffffffffffffffffffff();\n"
625                "}",
626                AllowSimpleBracedStatements);
627   verifyFormat("if (true) {\n"
628                "  ffffffffffffffffffffffffffffffffffffffffffffffffffffff();\n"
629                "}",
630                AllowSimpleBracedStatements);
631   verifyFormat("if (true) { //\n"
632                "  f();\n"
633                "}",
634                AllowSimpleBracedStatements);
635   verifyFormat("if (true) {\n"
636                "  f();\n"
637                "  f();\n"
638                "}",
639                AllowSimpleBracedStatements);
640   verifyFormat("if (true) {\n"
641                "  f();\n"
642                "} else {\n"
643                "  f();\n"
644                "}",
645                AllowSimpleBracedStatements);
646 
647   verifyFormat("struct A2 {\n"
648                "  int X;\n"
649                "};",
650                AllowSimpleBracedStatements);
651   verifyFormat("typedef struct A2 {\n"
652                "  int X;\n"
653                "} A2_t;",
654                AllowSimpleBracedStatements);
655   verifyFormat("template <int> struct A2 {\n"
656                "  struct B {};\n"
657                "};",
658                AllowSimpleBracedStatements);
659 
660   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
661       FormatStyle::SIS_Never;
662   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
663   verifyFormat("if (true) {\n"
664                "  f();\n"
665                "}",
666                AllowSimpleBracedStatements);
667   verifyFormat("if (true) {\n"
668                "  f();\n"
669                "} else {\n"
670                "  f();\n"
671                "}",
672                AllowSimpleBracedStatements);
673 
674   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false;
675   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
676   verifyFormat("while (true) {\n"
677                "  f();\n"
678                "}",
679                AllowSimpleBracedStatements);
680   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
681   verifyFormat("for (;;) {\n"
682                "  f();\n"
683                "}",
684                AllowSimpleBracedStatements);
685 
686   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
687       FormatStyle::SIS_WithoutElse;
688   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true;
689   AllowSimpleBracedStatements.BraceWrapping.AfterControlStatement =
690       FormatStyle::BWACS_Always;
691 
692   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
693   verifyFormat("if constexpr (true) {}", AllowSimpleBracedStatements);
694   verifyFormat("if CONSTEXPR (true) {}", AllowSimpleBracedStatements);
695   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
696   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
697   verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements);
698   verifyFormat("if constexpr (true) { f(); }", AllowSimpleBracedStatements);
699   verifyFormat("if CONSTEXPR (true) { f(); }", AllowSimpleBracedStatements);
700   verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements);
701   verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements);
702   verifyFormat("if (true) { fffffffffffffffffffffff(); }",
703                AllowSimpleBracedStatements);
704   verifyFormat("if (true)\n"
705                "{\n"
706                "  ffffffffffffffffffffffff();\n"
707                "}",
708                AllowSimpleBracedStatements);
709   verifyFormat("if (true)\n"
710                "{\n"
711                "  ffffffffffffffffffffffffffffffffffffffffffffffffffffff();\n"
712                "}",
713                AllowSimpleBracedStatements);
714   verifyFormat("if (true)\n"
715                "{ //\n"
716                "  f();\n"
717                "}",
718                AllowSimpleBracedStatements);
719   verifyFormat("if (true)\n"
720                "{\n"
721                "  f();\n"
722                "  f();\n"
723                "}",
724                AllowSimpleBracedStatements);
725   verifyFormat("if (true)\n"
726                "{\n"
727                "  f();\n"
728                "} else\n"
729                "{\n"
730                "  f();\n"
731                "}",
732                AllowSimpleBracedStatements);
733 
734   AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine =
735       FormatStyle::SIS_Never;
736   verifyFormat("if (true) {}", AllowSimpleBracedStatements);
737   verifyFormat("if (true)\n"
738                "{\n"
739                "  f();\n"
740                "}",
741                AllowSimpleBracedStatements);
742   verifyFormat("if (true)\n"
743                "{\n"
744                "  f();\n"
745                "} else\n"
746                "{\n"
747                "  f();\n"
748                "}",
749                AllowSimpleBracedStatements);
750 
751   AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false;
752   verifyFormat("while (true) {}", AllowSimpleBracedStatements);
753   verifyFormat("while (true)\n"
754                "{\n"
755                "  f();\n"
756                "}",
757                AllowSimpleBracedStatements);
758   verifyFormat("for (;;) {}", AllowSimpleBracedStatements);
759   verifyFormat("for (;;)\n"
760                "{\n"
761                "  f();\n"
762                "}",
763                AllowSimpleBracedStatements);
764 }
765 
766 TEST_F(FormatTest, ShortBlocksInMacrosDontMergeWithCodeAfterMacro) {
767   FormatStyle Style = getLLVMStyleWithColumns(60);
768   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
769   Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_WithoutElse;
770   Style.BreakBeforeBraces = FormatStyle::BS_Allman;
771   EXPECT_EQ("#define A                                                  \\\n"
772             "  if (HANDLEwernufrnuLwrmviferuvnierv)                     \\\n"
773             "  {                                                        \\\n"
774             "    RET_ERR1_ANUIREUINERUIFNIOAerwfwrvnuier;               \\\n"
775             "  }\n"
776             "X;",
777             format("#define A \\\n"
778                    "   if (HANDLEwernufrnuLwrmviferuvnierv) { \\\n"
779                    "      RET_ERR1_ANUIREUINERUIFNIOAerwfwrvnuier; \\\n"
780                    "   }\n"
781                    "X;",
782                    Style));
783 }
784 
785 TEST_F(FormatTest, ParseIfElse) {
786   verifyFormat("if (true)\n"
787                "  if (true)\n"
788                "    if (true)\n"
789                "      f();\n"
790                "    else\n"
791                "      g();\n"
792                "  else\n"
793                "    h();\n"
794                "else\n"
795                "  i();");
796   verifyFormat("if (true)\n"
797                "  if (true)\n"
798                "    if (true) {\n"
799                "      if (true)\n"
800                "        f();\n"
801                "    } else {\n"
802                "      g();\n"
803                "    }\n"
804                "  else\n"
805                "    h();\n"
806                "else {\n"
807                "  i();\n"
808                "}");
809   verifyFormat("if (true)\n"
810                "  if constexpr (true)\n"
811                "    if (true) {\n"
812                "      if constexpr (true)\n"
813                "        f();\n"
814                "    } else {\n"
815                "      g();\n"
816                "    }\n"
817                "  else\n"
818                "    h();\n"
819                "else {\n"
820                "  i();\n"
821                "}");
822   verifyFormat("if (true)\n"
823                "  if CONSTEXPR (true)\n"
824                "    if (true) {\n"
825                "      if CONSTEXPR (true)\n"
826                "        f();\n"
827                "    } else {\n"
828                "      g();\n"
829                "    }\n"
830                "  else\n"
831                "    h();\n"
832                "else {\n"
833                "  i();\n"
834                "}");
835   verifyFormat("void f() {\n"
836                "  if (a) {\n"
837                "  } else {\n"
838                "  }\n"
839                "}");
840 }
841 
842 TEST_F(FormatTest, ElseIf) {
843   verifyFormat("if (a) {\n} else if (b) {\n}");
844   verifyFormat("if (a)\n"
845                "  f();\n"
846                "else if (b)\n"
847                "  g();\n"
848                "else\n"
849                "  h();");
850   verifyFormat("if constexpr (a)\n"
851                "  f();\n"
852                "else if constexpr (b)\n"
853                "  g();\n"
854                "else\n"
855                "  h();");
856   verifyFormat("if CONSTEXPR (a)\n"
857                "  f();\n"
858                "else if CONSTEXPR (b)\n"
859                "  g();\n"
860                "else\n"
861                "  h();");
862   verifyFormat("if (a) {\n"
863                "  f();\n"
864                "}\n"
865                "// or else ..\n"
866                "else {\n"
867                "  g()\n"
868                "}");
869 
870   verifyFormat("if (a) {\n"
871                "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
872                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
873                "}");
874   verifyFormat("if (a) {\n"
875                "} else if constexpr (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
876                "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
877                "}");
878   verifyFormat("if (a) {\n"
879                "} else if CONSTEXPR (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
880                "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
881                "}");
882   verifyFormat("if (a) {\n"
883                "} else if (\n"
884                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
885                "}",
886                getLLVMStyleWithColumns(62));
887   verifyFormat("if (a) {\n"
888                "} else if constexpr (\n"
889                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
890                "}",
891                getLLVMStyleWithColumns(62));
892   verifyFormat("if (a) {\n"
893                "} else if CONSTEXPR (\n"
894                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
895                "}",
896                getLLVMStyleWithColumns(62));
897 }
898 
899 TEST_F(FormatTest, FormatsForLoop) {
900   verifyFormat(
901       "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n"
902       "     ++VeryVeryLongLoopVariable)\n"
903       "  ;");
904   verifyFormat("for (;;)\n"
905                "  f();");
906   verifyFormat("for (;;) {\n}");
907   verifyFormat("for (;;) {\n"
908                "  f();\n"
909                "}");
910   verifyFormat("for (int i = 0; (i < 10); ++i) {\n}");
911 
912   verifyFormat(
913       "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
914       "                                          E = UnwrappedLines.end();\n"
915       "     I != E; ++I) {\n}");
916 
917   verifyFormat(
918       "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n"
919       "     ++IIIII) {\n}");
920   verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n"
921                "         aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n"
922                "     aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}");
923   verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n"
924                "         I = FD->getDeclsInPrototypeScope().begin(),\n"
925                "         E = FD->getDeclsInPrototypeScope().end();\n"
926                "     I != E; ++I) {\n}");
927   verifyFormat("for (SmallVectorImpl<TemplateIdAnnotationn *>::iterator\n"
928                "         I = Container.begin(),\n"
929                "         E = Container.end();\n"
930                "     I != E; ++I) {\n}",
931                getLLVMStyleWithColumns(76));
932 
933   verifyFormat(
934       "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
935       "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n"
936       "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
937       "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
938       "     ++aaaaaaaaaaa) {\n}");
939   verifyFormat("for (int i = 0; i < aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
940                "                bbbbbbbbbbbbbbbbbbbb < ccccccccccccccc;\n"
941                "     ++i) {\n}");
942   verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n"
943                "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
944                "}");
945   verifyFormat("for (some_namespace::SomeIterator iter( // force break\n"
946                "         aaaaaaaaaa);\n"
947                "     iter; ++iter) {\n"
948                "}");
949   verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
950                "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
951                "     aaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbbbbbbb;\n"
952                "     ++aaaaaaaaaaaaaaaaaaaaaaaaaaa) {");
953 
954   // These should not be formatted as Objective-C for-in loops.
955   verifyFormat("for (Foo *x = 0; x != in; x++) {\n}");
956   verifyFormat("Foo *x;\nfor (x = 0; x != in; x++) {\n}");
957   verifyFormat("Foo *x;\nfor (x in y) {\n}");
958   verifyFormat(
959       "for (const Foo<Bar> &baz = in.value(); !baz.at_end(); ++baz) {\n}");
960 
961   FormatStyle NoBinPacking = getLLVMStyle();
962   NoBinPacking.BinPackParameters = false;
963   verifyFormat("for (int aaaaaaaaaaa = 1;\n"
964                "     aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n"
965                "                                           aaaaaaaaaaaaaaaa,\n"
966                "                                           aaaaaaaaaaaaaaaa,\n"
967                "                                           aaaaaaaaaaaaaaaa);\n"
968                "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
969                "}",
970                NoBinPacking);
971   verifyFormat(
972       "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
973       "                                          E = UnwrappedLines.end();\n"
974       "     I != E;\n"
975       "     ++I) {\n}",
976       NoBinPacking);
977 
978   FormatStyle AlignLeft = getLLVMStyle();
979   AlignLeft.PointerAlignment = FormatStyle::PAS_Left;
980   verifyFormat("for (A* a = start; a < end; ++a, ++value) {\n}", AlignLeft);
981 }
982 
983 TEST_F(FormatTest, RangeBasedForLoops) {
984   verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
985                "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
986   verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n"
987                "     aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}");
988   verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n"
989                "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
990   verifyFormat("for (aaaaaaaaa aaaaaaaaaaaaaaaaaaaaa :\n"
991                "     aaaaaaaaaaaa.aaaaaaaaaaaa().aaaaaaaaa().a()) {\n}");
992 }
993 
994 TEST_F(FormatTest, ForEachLoops) {
995   verifyFormat("void f() {\n"
996                "  foreach (Item *item, itemlist) {}\n"
997                "  Q_FOREACH (Item *item, itemlist) {}\n"
998                "  BOOST_FOREACH (Item *item, itemlist) {}\n"
999                "  UNKNOWN_FORACH(Item * item, itemlist) {}\n"
1000                "}");
1001 
1002   FormatStyle Style = getLLVMStyle();
1003   Style.SpaceBeforeParens =
1004       FormatStyle::SBPO_ControlStatementsExceptForEachMacros;
1005   verifyFormat("void f() {\n"
1006                "  foreach(Item *item, itemlist) {}\n"
1007                "  Q_FOREACH(Item *item, itemlist) {}\n"
1008                "  BOOST_FOREACH(Item *item, itemlist) {}\n"
1009                "  UNKNOWN_FORACH(Item * item, itemlist) {}\n"
1010                "}",
1011                Style);
1012 
1013   // As function-like macros.
1014   verifyFormat("#define foreach(x, y)\n"
1015                "#define Q_FOREACH(x, y)\n"
1016                "#define BOOST_FOREACH(x, y)\n"
1017                "#define UNKNOWN_FOREACH(x, y)\n");
1018 
1019   // Not as function-like macros.
1020   verifyFormat("#define foreach (x, y)\n"
1021                "#define Q_FOREACH (x, y)\n"
1022                "#define BOOST_FOREACH (x, y)\n"
1023                "#define UNKNOWN_FOREACH (x, y)\n");
1024 
1025   // handle microsoft non standard extension
1026   verifyFormat("for each (char c in x->MyStringProperty)");
1027 }
1028 
1029 TEST_F(FormatTest, FormatsWhileLoop) {
1030   verifyFormat("while (true) {\n}");
1031   verifyFormat("while (true)\n"
1032                "  f();");
1033   verifyFormat("while () {\n}");
1034   verifyFormat("while () {\n"
1035                "  f();\n"
1036                "}");
1037 }
1038 
1039 TEST_F(FormatTest, FormatsDoWhile) {
1040   verifyFormat("do {\n"
1041                "  do_something();\n"
1042                "} while (something());");
1043   verifyFormat("do\n"
1044                "  do_something();\n"
1045                "while (something());");
1046 }
1047 
1048 TEST_F(FormatTest, FormatsSwitchStatement) {
1049   verifyFormat("switch (x) {\n"
1050                "case 1:\n"
1051                "  f();\n"
1052                "  break;\n"
1053                "case kFoo:\n"
1054                "case ns::kBar:\n"
1055                "case kBaz:\n"
1056                "  break;\n"
1057                "default:\n"
1058                "  g();\n"
1059                "  break;\n"
1060                "}");
1061   verifyFormat("switch (x) {\n"
1062                "case 1: {\n"
1063                "  f();\n"
1064                "  break;\n"
1065                "}\n"
1066                "case 2: {\n"
1067                "  break;\n"
1068                "}\n"
1069                "}");
1070   verifyFormat("switch (x) {\n"
1071                "case 1: {\n"
1072                "  f();\n"
1073                "  {\n"
1074                "    g();\n"
1075                "    h();\n"
1076                "  }\n"
1077                "  break;\n"
1078                "}\n"
1079                "}");
1080   verifyFormat("switch (x) {\n"
1081                "case 1: {\n"
1082                "  f();\n"
1083                "  if (foo) {\n"
1084                "    g();\n"
1085                "    h();\n"
1086                "  }\n"
1087                "  break;\n"
1088                "}\n"
1089                "}");
1090   verifyFormat("switch (x) {\n"
1091                "case 1: {\n"
1092                "  f();\n"
1093                "  g();\n"
1094                "} break;\n"
1095                "}");
1096   verifyFormat("switch (test)\n"
1097                "  ;");
1098   verifyFormat("switch (x) {\n"
1099                "default: {\n"
1100                "  // Do nothing.\n"
1101                "}\n"
1102                "}");
1103   verifyFormat("switch (x) {\n"
1104                "// comment\n"
1105                "// if 1, do f()\n"
1106                "case 1:\n"
1107                "  f();\n"
1108                "}");
1109   verifyFormat("switch (x) {\n"
1110                "case 1:\n"
1111                "  // Do amazing stuff\n"
1112                "  {\n"
1113                "    f();\n"
1114                "    g();\n"
1115                "  }\n"
1116                "  break;\n"
1117                "}");
1118   verifyFormat("#define A          \\\n"
1119                "  switch (x) {     \\\n"
1120                "  case a:          \\\n"
1121                "    foo = b;       \\\n"
1122                "  }",
1123                getLLVMStyleWithColumns(20));
1124   verifyFormat("#define OPERATION_CASE(name)           \\\n"
1125                "  case OP_name:                        \\\n"
1126                "    return operations::Operation##name\n",
1127                getLLVMStyleWithColumns(40));
1128   verifyFormat("switch (x) {\n"
1129                "case 1:;\n"
1130                "default:;\n"
1131                "  int i;\n"
1132                "}");
1133 
1134   verifyGoogleFormat("switch (x) {\n"
1135                      "  case 1:\n"
1136                      "    f();\n"
1137                      "    break;\n"
1138                      "  case kFoo:\n"
1139                      "  case ns::kBar:\n"
1140                      "  case kBaz:\n"
1141                      "    break;\n"
1142                      "  default:\n"
1143                      "    g();\n"
1144                      "    break;\n"
1145                      "}");
1146   verifyGoogleFormat("switch (x) {\n"
1147                      "  case 1: {\n"
1148                      "    f();\n"
1149                      "    break;\n"
1150                      "  }\n"
1151                      "}");
1152   verifyGoogleFormat("switch (test)\n"
1153                      "  ;");
1154 
1155   verifyGoogleFormat("#define OPERATION_CASE(name) \\\n"
1156                      "  case OP_name:              \\\n"
1157                      "    return operations::Operation##name\n");
1158   verifyGoogleFormat("Operation codeToOperation(OperationCode OpCode) {\n"
1159                      "  // Get the correction operation class.\n"
1160                      "  switch (OpCode) {\n"
1161                      "    CASE(Add);\n"
1162                      "    CASE(Subtract);\n"
1163                      "    default:\n"
1164                      "      return operations::Unknown;\n"
1165                      "  }\n"
1166                      "#undef OPERATION_CASE\n"
1167                      "}");
1168   verifyFormat("DEBUG({\n"
1169                "  switch (x) {\n"
1170                "  case A:\n"
1171                "    f();\n"
1172                "    break;\n"
1173                "    // fallthrough\n"
1174                "  case B:\n"
1175                "    g();\n"
1176                "    break;\n"
1177                "  }\n"
1178                "});");
1179   EXPECT_EQ("DEBUG({\n"
1180             "  switch (x) {\n"
1181             "  case A:\n"
1182             "    f();\n"
1183             "    break;\n"
1184             "  // On B:\n"
1185             "  case B:\n"
1186             "    g();\n"
1187             "    break;\n"
1188             "  }\n"
1189             "});",
1190             format("DEBUG({\n"
1191                    "  switch (x) {\n"
1192                    "  case A:\n"
1193                    "    f();\n"
1194                    "    break;\n"
1195                    "  // On B:\n"
1196                    "  case B:\n"
1197                    "    g();\n"
1198                    "    break;\n"
1199                    "  }\n"
1200                    "});",
1201                    getLLVMStyle()));
1202   EXPECT_EQ("switch (n) {\n"
1203             "case 0: {\n"
1204             "  return false;\n"
1205             "}\n"
1206             "default: {\n"
1207             "  return true;\n"
1208             "}\n"
1209             "}",
1210             format("switch (n)\n"
1211                    "{\n"
1212                    "case 0: {\n"
1213                    "  return false;\n"
1214                    "}\n"
1215                    "default: {\n"
1216                    "  return true;\n"
1217                    "}\n"
1218                    "}",
1219                    getLLVMStyle()));
1220   verifyFormat("switch (a) {\n"
1221                "case (b):\n"
1222                "  return;\n"
1223                "}");
1224 
1225   verifyFormat("switch (a) {\n"
1226                "case some_namespace::\n"
1227                "    some_constant:\n"
1228                "  return;\n"
1229                "}",
1230                getLLVMStyleWithColumns(34));
1231 
1232   FormatStyle Style = getLLVMStyle();
1233   Style.IndentCaseLabels = true;
1234   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Never;
1235   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
1236   Style.BraceWrapping.AfterCaseLabel = true;
1237   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Always;
1238   EXPECT_EQ("switch (n)\n"
1239             "{\n"
1240             "  case 0:\n"
1241             "  {\n"
1242             "    return false;\n"
1243             "  }\n"
1244             "  default:\n"
1245             "  {\n"
1246             "    return true;\n"
1247             "  }\n"
1248             "}",
1249             format("switch (n) {\n"
1250                    "  case 0: {\n"
1251                    "    return false;\n"
1252                    "  }\n"
1253                    "  default: {\n"
1254                    "    return true;\n"
1255                    "  }\n"
1256                    "}",
1257                    Style));
1258   Style.BraceWrapping.AfterCaseLabel = false;
1259   EXPECT_EQ("switch (n)\n"
1260             "{\n"
1261             "  case 0: {\n"
1262             "    return false;\n"
1263             "  }\n"
1264             "  default: {\n"
1265             "    return true;\n"
1266             "  }\n"
1267             "}",
1268             format("switch (n) {\n"
1269                    "  case 0:\n"
1270                    "  {\n"
1271                    "    return false;\n"
1272                    "  }\n"
1273                    "  default:\n"
1274                    "  {\n"
1275                    "    return true;\n"
1276                    "  }\n"
1277                    "}",
1278                    Style));
1279   Style.IndentCaseLabels = false;
1280   Style.IndentCaseBlocks = true;
1281   EXPECT_EQ("switch (n)\n"
1282             "{\n"
1283             "case 0:\n"
1284             "  {\n"
1285             "    return false;\n"
1286             "  }\n"
1287             "case 1:\n"
1288             "  break;\n"
1289             "default:\n"
1290             "  {\n"
1291             "    return true;\n"
1292             "  }\n"
1293             "}",
1294             format("switch (n) {\n"
1295                    "case 0: {\n"
1296                    "  return false;\n"
1297                    "}\n"
1298                    "case 1:\n"
1299                    "  break;\n"
1300                    "default: {\n"
1301                    "  return true;\n"
1302                    "}\n"
1303                    "}",
1304                    Style));
1305   Style.IndentCaseLabels = true;
1306   Style.IndentCaseBlocks = true;
1307   EXPECT_EQ("switch (n)\n"
1308             "{\n"
1309             "  case 0:\n"
1310             "    {\n"
1311             "      return false;\n"
1312             "    }\n"
1313             "  case 1:\n"
1314             "    break;\n"
1315             "  default:\n"
1316             "    {\n"
1317             "      return true;\n"
1318             "    }\n"
1319             "}",
1320             format("switch (n) {\n"
1321                    "case 0: {\n"
1322                    "  return false;\n"
1323                    "}\n"
1324                    "case 1:\n"
1325                    "  break;\n"
1326                    "default: {\n"
1327                    "  return true;\n"
1328                    "}\n"
1329                    "}",
1330                    Style));
1331 }
1332 
1333 TEST_F(FormatTest, CaseRanges) {
1334   verifyFormat("switch (x) {\n"
1335                "case 'A' ... 'Z':\n"
1336                "case 1 ... 5:\n"
1337                "case a ... b:\n"
1338                "  break;\n"
1339                "}");
1340 }
1341 
1342 TEST_F(FormatTest, ShortEnums) {
1343   FormatStyle Style = getLLVMStyle();
1344   Style.AllowShortEnumsOnASingleLine = true;
1345   verifyFormat("enum { A, B, C } ShortEnum1, ShortEnum2;", Style);
1346   Style.AllowShortEnumsOnASingleLine = false;
1347   verifyFormat("enum\n"
1348                "{\n"
1349                "  A,\n"
1350                "  B,\n"
1351                "  C\n"
1352                "} ShortEnum1, ShortEnum2;",
1353                Style);
1354 }
1355 
1356 TEST_F(FormatTest, ShortCaseLabels) {
1357   FormatStyle Style = getLLVMStyle();
1358   Style.AllowShortCaseLabelsOnASingleLine = true;
1359   verifyFormat("switch (a) {\n"
1360                "case 1: x = 1; break;\n"
1361                "case 2: return;\n"
1362                "case 3:\n"
1363                "case 4:\n"
1364                "case 5: return;\n"
1365                "case 6: // comment\n"
1366                "  return;\n"
1367                "case 7:\n"
1368                "  // comment\n"
1369                "  return;\n"
1370                "case 8:\n"
1371                "  x = 8; // comment\n"
1372                "  break;\n"
1373                "default: y = 1; break;\n"
1374                "}",
1375                Style);
1376   verifyFormat("switch (a) {\n"
1377                "case 0: return; // comment\n"
1378                "case 1: break;  // comment\n"
1379                "case 2: return;\n"
1380                "// comment\n"
1381                "case 3: return;\n"
1382                "// comment 1\n"
1383                "// comment 2\n"
1384                "// comment 3\n"
1385                "case 4: break; /* comment */\n"
1386                "case 5:\n"
1387                "  // comment\n"
1388                "  break;\n"
1389                "case 6: /* comment */ x = 1; break;\n"
1390                "case 7: x = /* comment */ 1; break;\n"
1391                "case 8:\n"
1392                "  x = 1; /* comment */\n"
1393                "  break;\n"
1394                "case 9:\n"
1395                "  break; // comment line 1\n"
1396                "         // comment line 2\n"
1397                "}",
1398                Style);
1399   EXPECT_EQ("switch (a) {\n"
1400             "case 1:\n"
1401             "  x = 8;\n"
1402             "  // fall through\n"
1403             "case 2: x = 8;\n"
1404             "// comment\n"
1405             "case 3:\n"
1406             "  return; /* comment line 1\n"
1407             "           * comment line 2 */\n"
1408             "case 4: i = 8;\n"
1409             "// something else\n"
1410             "#if FOO\n"
1411             "case 5: break;\n"
1412             "#endif\n"
1413             "}",
1414             format("switch (a) {\n"
1415                    "case 1: x = 8;\n"
1416                    "  // fall through\n"
1417                    "case 2:\n"
1418                    "  x = 8;\n"
1419                    "// comment\n"
1420                    "case 3:\n"
1421                    "  return; /* comment line 1\n"
1422                    "           * comment line 2 */\n"
1423                    "case 4:\n"
1424                    "  i = 8;\n"
1425                    "// something else\n"
1426                    "#if FOO\n"
1427                    "case 5: break;\n"
1428                    "#endif\n"
1429                    "}",
1430                    Style));
1431   EXPECT_EQ("switch (a) {\n"
1432             "case 0:\n"
1433             "  return; // long long long long long long long long long long "
1434             "long long comment\n"
1435             "          // line\n"
1436             "}",
1437             format("switch (a) {\n"
1438                    "case 0: return; // long long long long long long long long "
1439                    "long long long long comment line\n"
1440                    "}",
1441                    Style));
1442   EXPECT_EQ("switch (a) {\n"
1443             "case 0:\n"
1444             "  return; /* long long long long long long long long long long "
1445             "long long comment\n"
1446             "             line */\n"
1447             "}",
1448             format("switch (a) {\n"
1449                    "case 0: return; /* long long long long long long long long "
1450                    "long long long long comment line */\n"
1451                    "}",
1452                    Style));
1453   verifyFormat("switch (a) {\n"
1454                "#if FOO\n"
1455                "case 0: return 0;\n"
1456                "#endif\n"
1457                "}",
1458                Style);
1459   verifyFormat("switch (a) {\n"
1460                "case 1: {\n"
1461                "}\n"
1462                "case 2: {\n"
1463                "  return;\n"
1464                "}\n"
1465                "case 3: {\n"
1466                "  x = 1;\n"
1467                "  return;\n"
1468                "}\n"
1469                "case 4:\n"
1470                "  if (x)\n"
1471                "    return;\n"
1472                "}",
1473                Style);
1474   Style.ColumnLimit = 21;
1475   verifyFormat("switch (a) {\n"
1476                "case 1: x = 1; break;\n"
1477                "case 2: return;\n"
1478                "case 3:\n"
1479                "case 4:\n"
1480                "case 5: return;\n"
1481                "default:\n"
1482                "  y = 1;\n"
1483                "  break;\n"
1484                "}",
1485                Style);
1486   Style.ColumnLimit = 80;
1487   Style.AllowShortCaseLabelsOnASingleLine = false;
1488   Style.IndentCaseLabels = true;
1489   EXPECT_EQ("switch (n) {\n"
1490             "  default /*comments*/:\n"
1491             "    return true;\n"
1492             "  case 0:\n"
1493             "    return false;\n"
1494             "}",
1495             format("switch (n) {\n"
1496                    "default/*comments*/:\n"
1497                    "  return true;\n"
1498                    "case 0:\n"
1499                    "  return false;\n"
1500                    "}",
1501                    Style));
1502   Style.AllowShortCaseLabelsOnASingleLine = true;
1503   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
1504   Style.BraceWrapping.AfterCaseLabel = true;
1505   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Always;
1506   EXPECT_EQ("switch (n)\n"
1507             "{\n"
1508             "  case 0:\n"
1509             "  {\n"
1510             "    return false;\n"
1511             "  }\n"
1512             "  default:\n"
1513             "  {\n"
1514             "    return true;\n"
1515             "  }\n"
1516             "}",
1517             format("switch (n) {\n"
1518                    "  case 0: {\n"
1519                    "    return false;\n"
1520                    "  }\n"
1521                    "  default:\n"
1522                    "  {\n"
1523                    "    return true;\n"
1524                    "  }\n"
1525                    "}",
1526                    Style));
1527 }
1528 
1529 TEST_F(FormatTest, FormatsLabels) {
1530   verifyFormat("void f() {\n"
1531                "  some_code();\n"
1532                "test_label:\n"
1533                "  some_other_code();\n"
1534                "  {\n"
1535                "    some_more_code();\n"
1536                "  another_label:\n"
1537                "    some_more_code();\n"
1538                "  }\n"
1539                "}");
1540   verifyFormat("{\n"
1541                "  some_code();\n"
1542                "test_label:\n"
1543                "  some_other_code();\n"
1544                "}");
1545   verifyFormat("{\n"
1546                "  some_code();\n"
1547                "test_label:;\n"
1548                "  int i = 0;\n"
1549                "}");
1550   FormatStyle Style = getLLVMStyle();
1551   Style.IndentGotoLabels = false;
1552   verifyFormat("void f() {\n"
1553                "  some_code();\n"
1554                "test_label:\n"
1555                "  some_other_code();\n"
1556                "  {\n"
1557                "    some_more_code();\n"
1558                "another_label:\n"
1559                "    some_more_code();\n"
1560                "  }\n"
1561                "}",
1562                Style);
1563   verifyFormat("{\n"
1564                "  some_code();\n"
1565                "test_label:\n"
1566                "  some_other_code();\n"
1567                "}",
1568                Style);
1569   verifyFormat("{\n"
1570                "  some_code();\n"
1571                "test_label:;\n"
1572                "  int i = 0;\n"
1573                "}");
1574 }
1575 
1576 TEST_F(FormatTest, MultiLineControlStatements) {
1577   FormatStyle Style = getLLVMStyle();
1578   Style.BreakBeforeBraces = FormatStyle::BraceBreakingStyle::BS_Custom;
1579   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_MultiLine;
1580   Style.ColumnLimit = 20;
1581   // Short lines should keep opening brace on same line.
1582   EXPECT_EQ("if (foo) {\n"
1583             "  bar();\n"
1584             "}",
1585             format("if(foo){bar();}", Style));
1586   EXPECT_EQ("if (foo) {\n"
1587             "  bar();\n"
1588             "} else {\n"
1589             "  baz();\n"
1590             "}",
1591             format("if(foo){bar();}else{baz();}", Style));
1592   EXPECT_EQ("if (foo && bar) {\n"
1593             "  baz();\n"
1594             "}",
1595             format("if(foo&&bar){baz();}", Style));
1596   EXPECT_EQ("if (foo) {\n"
1597             "  bar();\n"
1598             "} else if (baz) {\n"
1599             "  quux();\n"
1600             "}",
1601             format("if(foo){bar();}else if(baz){quux();}", Style));
1602   EXPECT_EQ(
1603       "if (foo) {\n"
1604       "  bar();\n"
1605       "} else if (baz) {\n"
1606       "  quux();\n"
1607       "} else {\n"
1608       "  foobar();\n"
1609       "}",
1610       format("if(foo){bar();}else if(baz){quux();}else{foobar();}", Style));
1611   EXPECT_EQ("for (;;) {\n"
1612             "  foo();\n"
1613             "}",
1614             format("for(;;){foo();}"));
1615   EXPECT_EQ("while (1) {\n"
1616             "  foo();\n"
1617             "}",
1618             format("while(1){foo();}", Style));
1619   EXPECT_EQ("switch (foo) {\n"
1620             "case bar:\n"
1621             "  return;\n"
1622             "}",
1623             format("switch(foo){case bar:return;}", Style));
1624   EXPECT_EQ("try {\n"
1625             "  foo();\n"
1626             "} catch (...) {\n"
1627             "  bar();\n"
1628             "}",
1629             format("try{foo();}catch(...){bar();}", Style));
1630   EXPECT_EQ("do {\n"
1631             "  foo();\n"
1632             "} while (bar &&\n"
1633             "         baz);",
1634             format("do{foo();}while(bar&&baz);", Style));
1635   // Long lines should put opening brace on new line.
1636   EXPECT_EQ("if (foo && bar &&\n"
1637             "    baz)\n"
1638             "{\n"
1639             "  quux();\n"
1640             "}",
1641             format("if(foo&&bar&&baz){quux();}", Style));
1642   EXPECT_EQ("if (foo && bar &&\n"
1643             "    baz)\n"
1644             "{\n"
1645             "  quux();\n"
1646             "}",
1647             format("if (foo && bar &&\n"
1648                    "    baz) {\n"
1649                    "  quux();\n"
1650                    "}",
1651                    Style));
1652   EXPECT_EQ("if (foo) {\n"
1653             "  bar();\n"
1654             "} else if (baz ||\n"
1655             "           quux)\n"
1656             "{\n"
1657             "  foobar();\n"
1658             "}",
1659             format("if(foo){bar();}else if(baz||quux){foobar();}", Style));
1660   EXPECT_EQ(
1661       "if (foo) {\n"
1662       "  bar();\n"
1663       "} else if (baz ||\n"
1664       "           quux)\n"
1665       "{\n"
1666       "  foobar();\n"
1667       "} else {\n"
1668       "  barbaz();\n"
1669       "}",
1670       format("if(foo){bar();}else if(baz||quux){foobar();}else{barbaz();}",
1671              Style));
1672   EXPECT_EQ("for (int i = 0;\n"
1673             "     i < 10; ++i)\n"
1674             "{\n"
1675             "  foo();\n"
1676             "}",
1677             format("for(int i=0;i<10;++i){foo();}", Style));
1678   EXPECT_EQ("foreach (int i,\n"
1679             "         list)\n"
1680             "{\n"
1681             "  foo();\n"
1682             "}",
1683             format("foreach(int i, list){foo();}", Style));
1684   Style.ColumnLimit =
1685       40; // to concentrate at brace wrapping, not line wrap due to column limit
1686   EXPECT_EQ("foreach (int i, list) {\n"
1687             "  foo();\n"
1688             "}",
1689             format("foreach(int i, list){foo();}", Style));
1690   Style.ColumnLimit =
1691       20; // to concentrate at brace wrapping, not line wrap due to column limit
1692   EXPECT_EQ("while (foo || bar ||\n"
1693             "       baz)\n"
1694             "{\n"
1695             "  quux();\n"
1696             "}",
1697             format("while(foo||bar||baz){quux();}", Style));
1698   EXPECT_EQ("switch (\n"
1699             "    foo = barbaz)\n"
1700             "{\n"
1701             "case quux:\n"
1702             "  return;\n"
1703             "}",
1704             format("switch(foo=barbaz){case quux:return;}", Style));
1705   EXPECT_EQ("try {\n"
1706             "  foo();\n"
1707             "} catch (\n"
1708             "    Exception &bar)\n"
1709             "{\n"
1710             "  baz();\n"
1711             "}",
1712             format("try{foo();}catch(Exception&bar){baz();}", Style));
1713   Style.ColumnLimit =
1714       40; // to concentrate at brace wrapping, not line wrap due to column limit
1715   EXPECT_EQ("try {\n"
1716             "  foo();\n"
1717             "} catch (Exception &bar) {\n"
1718             "  baz();\n"
1719             "}",
1720             format("try{foo();}catch(Exception&bar){baz();}", Style));
1721   Style.ColumnLimit =
1722       20; // to concentrate at brace wrapping, not line wrap due to column limit
1723 
1724   Style.BraceWrapping.BeforeElse = true;
1725   EXPECT_EQ(
1726       "if (foo) {\n"
1727       "  bar();\n"
1728       "}\n"
1729       "else if (baz ||\n"
1730       "         quux)\n"
1731       "{\n"
1732       "  foobar();\n"
1733       "}\n"
1734       "else {\n"
1735       "  barbaz();\n"
1736       "}",
1737       format("if(foo){bar();}else if(baz||quux){foobar();}else{barbaz();}",
1738              Style));
1739 
1740   Style.BraceWrapping.BeforeCatch = true;
1741   EXPECT_EQ("try {\n"
1742             "  foo();\n"
1743             "}\n"
1744             "catch (...) {\n"
1745             "  baz();\n"
1746             "}",
1747             format("try{foo();}catch(...){baz();}", Style));
1748 }
1749 
1750 TEST_F(FormatTest, BeforeWhile) {
1751   FormatStyle Style = getLLVMStyle();
1752   Style.BreakBeforeBraces = FormatStyle::BraceBreakingStyle::BS_Custom;
1753 
1754   verifyFormat("do {\n"
1755                "  foo();\n"
1756                "} while (1);",
1757                Style);
1758   Style.BraceWrapping.BeforeWhile = true;
1759   verifyFormat("do {\n"
1760                "  foo();\n"
1761                "}\n"
1762                "while (1);",
1763                Style);
1764 }
1765 
1766 //===----------------------------------------------------------------------===//
1767 // Tests for classes, namespaces, etc.
1768 //===----------------------------------------------------------------------===//
1769 
1770 TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) {
1771   verifyFormat("class A {};");
1772 }
1773 
1774 TEST_F(FormatTest, UnderstandsAccessSpecifiers) {
1775   verifyFormat("class A {\n"
1776                "public:\n"
1777                "public: // comment\n"
1778                "protected:\n"
1779                "private:\n"
1780                "  void f() {}\n"
1781                "};");
1782   verifyFormat("export class A {\n"
1783                "public:\n"
1784                "public: // comment\n"
1785                "protected:\n"
1786                "private:\n"
1787                "  void f() {}\n"
1788                "};");
1789   verifyGoogleFormat("class A {\n"
1790                      " public:\n"
1791                      " protected:\n"
1792                      " private:\n"
1793                      "  void f() {}\n"
1794                      "};");
1795   verifyGoogleFormat("export class A {\n"
1796                      " public:\n"
1797                      " protected:\n"
1798                      " private:\n"
1799                      "  void f() {}\n"
1800                      "};");
1801   verifyFormat("class A {\n"
1802                "public slots:\n"
1803                "  void f1() {}\n"
1804                "public Q_SLOTS:\n"
1805                "  void f2() {}\n"
1806                "protected slots:\n"
1807                "  void f3() {}\n"
1808                "protected Q_SLOTS:\n"
1809                "  void f4() {}\n"
1810                "private slots:\n"
1811                "  void f5() {}\n"
1812                "private Q_SLOTS:\n"
1813                "  void f6() {}\n"
1814                "signals:\n"
1815                "  void g1();\n"
1816                "Q_SIGNALS:\n"
1817                "  void g2();\n"
1818                "};");
1819 
1820   // Don't interpret 'signals' the wrong way.
1821   verifyFormat("signals.set();");
1822   verifyFormat("for (Signals signals : f()) {\n}");
1823   verifyFormat("{\n"
1824                "  signals.set(); // This needs indentation.\n"
1825                "}");
1826   verifyFormat("void f() {\n"
1827                "label:\n"
1828                "  signals.baz();\n"
1829                "}");
1830 }
1831 
1832 TEST_F(FormatTest, SeparatesLogicalBlocks) {
1833   EXPECT_EQ("class A {\n"
1834             "public:\n"
1835             "  void f();\n"
1836             "\n"
1837             "private:\n"
1838             "  void g() {}\n"
1839             "  // test\n"
1840             "protected:\n"
1841             "  int h;\n"
1842             "};",
1843             format("class A {\n"
1844                    "public:\n"
1845                    "void f();\n"
1846                    "private:\n"
1847                    "void g() {}\n"
1848                    "// test\n"
1849                    "protected:\n"
1850                    "int h;\n"
1851                    "};"));
1852   EXPECT_EQ("class A {\n"
1853             "protected:\n"
1854             "public:\n"
1855             "  void f();\n"
1856             "};",
1857             format("class A {\n"
1858                    "protected:\n"
1859                    "\n"
1860                    "public:\n"
1861                    "\n"
1862                    "  void f();\n"
1863                    "};"));
1864 
1865   // Even ensure proper spacing inside macros.
1866   EXPECT_EQ("#define B     \\\n"
1867             "  class A {   \\\n"
1868             "   protected: \\\n"
1869             "   public:    \\\n"
1870             "    void f(); \\\n"
1871             "  };",
1872             format("#define B     \\\n"
1873                    "  class A {   \\\n"
1874                    "   protected: \\\n"
1875                    "              \\\n"
1876                    "   public:    \\\n"
1877                    "              \\\n"
1878                    "    void f(); \\\n"
1879                    "  };",
1880                    getGoogleStyle()));
1881   // But don't remove empty lines after macros ending in access specifiers.
1882   EXPECT_EQ("#define A private:\n"
1883             "\n"
1884             "int i;",
1885             format("#define A         private:\n"
1886                    "\n"
1887                    "int              i;"));
1888 }
1889 
1890 TEST_F(FormatTest, FormatsClasses) {
1891   verifyFormat("class A : public B {};");
1892   verifyFormat("class A : public ::B {};");
1893 
1894   verifyFormat(
1895       "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
1896       "                             public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
1897   verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n"
1898                "    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
1899                "      public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
1900   verifyFormat(
1901       "class A : public B, public C, public D, public E, public F {};");
1902   verifyFormat("class AAAAAAAAAAAA : public B,\n"
1903                "                     public C,\n"
1904                "                     public D,\n"
1905                "                     public E,\n"
1906                "                     public F,\n"
1907                "                     public G {};");
1908 
1909   verifyFormat("class\n"
1910                "    ReallyReallyLongClassName {\n"
1911                "  int i;\n"
1912                "};",
1913                getLLVMStyleWithColumns(32));
1914   verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n"
1915                "                           aaaaaaaaaaaaaaaa> {};");
1916   verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n"
1917                "    : public aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaa,\n"
1918                "                                 aaaaaaaaaaaaaaaaaaaaaa> {};");
1919   verifyFormat("template <class R, class C>\n"
1920                "struct Aaaaaaaaaaaaaaaaa<R (C::*)(int) const>\n"
1921                "    : Aaaaaaaaaaaaaaaaa<R (C::*)(int)> {};");
1922   verifyFormat("class ::A::B {};");
1923 }
1924 
1925 TEST_F(FormatTest, BreakInheritanceStyle) {
1926   FormatStyle StyleWithInheritanceBreakBeforeComma = getLLVMStyle();
1927   StyleWithInheritanceBreakBeforeComma.BreakInheritanceList =
1928       FormatStyle::BILS_BeforeComma;
1929   verifyFormat("class MyClass : public X {};",
1930                StyleWithInheritanceBreakBeforeComma);
1931   verifyFormat("class MyClass\n"
1932                "    : public X\n"
1933                "    , public Y {};",
1934                StyleWithInheritanceBreakBeforeComma);
1935   verifyFormat("class AAAAAAAAAAAAAAAAAAAAAA\n"
1936                "    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB\n"
1937                "    , public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};",
1938                StyleWithInheritanceBreakBeforeComma);
1939   verifyFormat("struct aaaaaaaaaaaaa\n"
1940                "    : public aaaaaaaaaaaaaaaaaaa< // break\n"
1941                "          aaaaaaaaaaaaaaaa> {};",
1942                StyleWithInheritanceBreakBeforeComma);
1943 
1944   FormatStyle StyleWithInheritanceBreakAfterColon = getLLVMStyle();
1945   StyleWithInheritanceBreakAfterColon.BreakInheritanceList =
1946       FormatStyle::BILS_AfterColon;
1947   verifyFormat("class MyClass : public X {};",
1948                StyleWithInheritanceBreakAfterColon);
1949   verifyFormat("class MyClass : public X, public Y {};",
1950                StyleWithInheritanceBreakAfterColon);
1951   verifyFormat("class AAAAAAAAAAAAAAAAAAAAAA :\n"
1952                "    public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
1953                "    public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};",
1954                StyleWithInheritanceBreakAfterColon);
1955   verifyFormat("struct aaaaaaaaaaaaa :\n"
1956                "    public aaaaaaaaaaaaaaaaaaa< // break\n"
1957                "        aaaaaaaaaaaaaaaa> {};",
1958                StyleWithInheritanceBreakAfterColon);
1959 }
1960 
1961 TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) {
1962   verifyFormat("class A {\n} a, b;");
1963   verifyFormat("struct A {\n} a, b;");
1964   verifyFormat("union A {\n} a;");
1965 }
1966 
1967 TEST_F(FormatTest, FormatsEnum) {
1968   verifyFormat("enum {\n"
1969                "  Zero,\n"
1970                "  One = 1,\n"
1971                "  Two = One + 1,\n"
1972                "  Three = (One + Two),\n"
1973                "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
1974                "  Five = (One, Two, Three, Four, 5)\n"
1975                "};");
1976   verifyGoogleFormat("enum {\n"
1977                      "  Zero,\n"
1978                      "  One = 1,\n"
1979                      "  Two = One + 1,\n"
1980                      "  Three = (One + Two),\n"
1981                      "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
1982                      "  Five = (One, Two, Three, Four, 5)\n"
1983                      "};");
1984   verifyFormat("enum Enum {};");
1985   verifyFormat("enum {};");
1986   verifyFormat("enum X E {} d;");
1987   verifyFormat("enum __attribute__((...)) E {} d;");
1988   verifyFormat("enum __declspec__((...)) E {} d;");
1989   verifyFormat("enum {\n"
1990                "  Bar = Foo<int, int>::value\n"
1991                "};",
1992                getLLVMStyleWithColumns(30));
1993 
1994   verifyFormat("enum ShortEnum { A, B, C };");
1995   verifyGoogleFormat("enum ShortEnum { A, B, C };");
1996 
1997   EXPECT_EQ("enum KeepEmptyLines {\n"
1998             "  ONE,\n"
1999             "\n"
2000             "  TWO,\n"
2001             "\n"
2002             "  THREE\n"
2003             "}",
2004             format("enum KeepEmptyLines {\n"
2005                    "  ONE,\n"
2006                    "\n"
2007                    "  TWO,\n"
2008                    "\n"
2009                    "\n"
2010                    "  THREE\n"
2011                    "}"));
2012   verifyFormat("enum E { // comment\n"
2013                "  ONE,\n"
2014                "  TWO\n"
2015                "};\n"
2016                "int i;");
2017 
2018   FormatStyle EightIndent = getLLVMStyle();
2019   EightIndent.IndentWidth = 8;
2020   verifyFormat("enum {\n"
2021                "        VOID,\n"
2022                "        CHAR,\n"
2023                "        SHORT,\n"
2024                "        INT,\n"
2025                "        LONG,\n"
2026                "        SIGNED,\n"
2027                "        UNSIGNED,\n"
2028                "        BOOL,\n"
2029                "        FLOAT,\n"
2030                "        DOUBLE,\n"
2031                "        COMPLEX\n"
2032                "};",
2033                EightIndent);
2034 
2035   // Not enums.
2036   verifyFormat("enum X f() {\n"
2037                "  a();\n"
2038                "  return 42;\n"
2039                "}");
2040   verifyFormat("enum X Type::f() {\n"
2041                "  a();\n"
2042                "  return 42;\n"
2043                "}");
2044   verifyFormat("enum ::X f() {\n"
2045                "  a();\n"
2046                "  return 42;\n"
2047                "}");
2048   verifyFormat("enum ns::X f() {\n"
2049                "  a();\n"
2050                "  return 42;\n"
2051                "}");
2052 }
2053 
2054 TEST_F(FormatTest, FormatsEnumsWithErrors) {
2055   verifyFormat("enum Type {\n"
2056                "  One = 0; // These semicolons should be commas.\n"
2057                "  Two = 1;\n"
2058                "};");
2059   verifyFormat("namespace n {\n"
2060                "enum Type {\n"
2061                "  One,\n"
2062                "  Two, // missing };\n"
2063                "  int i;\n"
2064                "}\n"
2065                "void g() {}");
2066 }
2067 
2068 TEST_F(FormatTest, FormatsEnumStruct) {
2069   verifyFormat("enum struct {\n"
2070                "  Zero,\n"
2071                "  One = 1,\n"
2072                "  Two = One + 1,\n"
2073                "  Three = (One + Two),\n"
2074                "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
2075                "  Five = (One, Two, Three, Four, 5)\n"
2076                "};");
2077   verifyFormat("enum struct Enum {};");
2078   verifyFormat("enum struct {};");
2079   verifyFormat("enum struct X E {} d;");
2080   verifyFormat("enum struct __attribute__((...)) E {} d;");
2081   verifyFormat("enum struct __declspec__((...)) E {} d;");
2082   verifyFormat("enum struct X f() {\n  a();\n  return 42;\n}");
2083 }
2084 
2085 TEST_F(FormatTest, FormatsEnumClass) {
2086   verifyFormat("enum class {\n"
2087                "  Zero,\n"
2088                "  One = 1,\n"
2089                "  Two = One + 1,\n"
2090                "  Three = (One + Two),\n"
2091                "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
2092                "  Five = (One, Two, Three, Four, 5)\n"
2093                "};");
2094   verifyFormat("enum class Enum {};");
2095   verifyFormat("enum class {};");
2096   verifyFormat("enum class X E {} d;");
2097   verifyFormat("enum class __attribute__((...)) E {} d;");
2098   verifyFormat("enum class __declspec__((...)) E {} d;");
2099   verifyFormat("enum class X f() {\n  a();\n  return 42;\n}");
2100 }
2101 
2102 TEST_F(FormatTest, FormatsEnumTypes) {
2103   verifyFormat("enum X : int {\n"
2104                "  A, // Force multiple lines.\n"
2105                "  B\n"
2106                "};");
2107   verifyFormat("enum X : int { A, B };");
2108   verifyFormat("enum X : std::uint32_t { A, B };");
2109 }
2110 
2111 TEST_F(FormatTest, FormatsTypedefEnum) {
2112   FormatStyle Style = getLLVMStyle();
2113   Style.ColumnLimit = 40;
2114   verifyFormat("typedef enum {} EmptyEnum;");
2115   verifyFormat("typedef enum { A, B, C } ShortEnum;");
2116   verifyFormat("typedef enum {\n"
2117                "  ZERO = 0,\n"
2118                "  ONE = 1,\n"
2119                "  TWO = 2,\n"
2120                "  THREE = 3\n"
2121                "} LongEnum;",
2122                Style);
2123   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2124   Style.BraceWrapping.AfterEnum = true;
2125   verifyFormat("typedef enum {} EmptyEnum;");
2126   verifyFormat("typedef enum { A, B, C } ShortEnum;");
2127   verifyFormat("typedef enum\n"
2128                "{\n"
2129                "  ZERO = 0,\n"
2130                "  ONE = 1,\n"
2131                "  TWO = 2,\n"
2132                "  THREE = 3\n"
2133                "} LongEnum;",
2134                Style);
2135 }
2136 
2137 TEST_F(FormatTest, FormatsNSEnums) {
2138   verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }");
2139   verifyGoogleFormat(
2140       "typedef NS_CLOSED_ENUM(NSInteger, SomeName) { AAA, BBB }");
2141   verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n"
2142                      "  // Information about someDecentlyLongValue.\n"
2143                      "  someDecentlyLongValue,\n"
2144                      "  // Information about anotherDecentlyLongValue.\n"
2145                      "  anotherDecentlyLongValue,\n"
2146                      "  // Information about aThirdDecentlyLongValue.\n"
2147                      "  aThirdDecentlyLongValue\n"
2148                      "};");
2149   verifyGoogleFormat("typedef NS_CLOSED_ENUM(NSInteger, MyType) {\n"
2150                      "  // Information about someDecentlyLongValue.\n"
2151                      "  someDecentlyLongValue,\n"
2152                      "  // Information about anotherDecentlyLongValue.\n"
2153                      "  anotherDecentlyLongValue,\n"
2154                      "  // Information about aThirdDecentlyLongValue.\n"
2155                      "  aThirdDecentlyLongValue\n"
2156                      "};");
2157   verifyGoogleFormat("typedef NS_OPTIONS(NSInteger, MyType) {\n"
2158                      "  a = 1,\n"
2159                      "  b = 2,\n"
2160                      "  c = 3,\n"
2161                      "};");
2162   verifyGoogleFormat("typedef CF_ENUM(NSInteger, MyType) {\n"
2163                      "  a = 1,\n"
2164                      "  b = 2,\n"
2165                      "  c = 3,\n"
2166                      "};");
2167   verifyGoogleFormat("typedef CF_CLOSED_ENUM(NSInteger, MyType) {\n"
2168                      "  a = 1,\n"
2169                      "  b = 2,\n"
2170                      "  c = 3,\n"
2171                      "};");
2172   verifyGoogleFormat("typedef CF_OPTIONS(NSInteger, MyType) {\n"
2173                      "  a = 1,\n"
2174                      "  b = 2,\n"
2175                      "  c = 3,\n"
2176                      "};");
2177 }
2178 
2179 TEST_F(FormatTest, FormatsBitfields) {
2180   verifyFormat("struct Bitfields {\n"
2181                "  unsigned sClass : 8;\n"
2182                "  unsigned ValueKind : 2;\n"
2183                "};");
2184   verifyFormat("struct A {\n"
2185                "  int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n"
2186                "      bbbbbbbbbbbbbbbbbbbbbbbbb;\n"
2187                "};");
2188   verifyFormat("struct MyStruct {\n"
2189                "  uchar data;\n"
2190                "  uchar : 8;\n"
2191                "  uchar : 8;\n"
2192                "  uchar other;\n"
2193                "};");
2194   FormatStyle Style = getLLVMStyle();
2195   Style.BitFieldColonSpacing = FormatStyle::BFCS_None;
2196   verifyFormat("struct Bitfields {\n"
2197                "  unsigned sClass:8;\n"
2198                "  unsigned ValueKind:2;\n"
2199                "  uchar other;\n"
2200                "};",
2201                Style);
2202   verifyFormat("struct A {\n"
2203                "  int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:1,\n"
2204                "      bbbbbbbbbbbbbbbbbbbbbbbbb:2;\n"
2205                "};",
2206                Style);
2207   Style.BitFieldColonSpacing = FormatStyle::BFCS_Before;
2208   verifyFormat("struct Bitfields {\n"
2209                "  unsigned sClass :8;\n"
2210                "  unsigned ValueKind :2;\n"
2211                "  uchar other;\n"
2212                "};",
2213                Style);
2214   Style.BitFieldColonSpacing = FormatStyle::BFCS_After;
2215   verifyFormat("struct Bitfields {\n"
2216                "  unsigned sClass: 8;\n"
2217                "  unsigned ValueKind: 2;\n"
2218                "  uchar other;\n"
2219                "};",
2220                Style);
2221 }
2222 
2223 TEST_F(FormatTest, FormatsNamespaces) {
2224   FormatStyle LLVMWithNoNamespaceFix = getLLVMStyle();
2225   LLVMWithNoNamespaceFix.FixNamespaceComments = false;
2226 
2227   verifyFormat("namespace some_namespace {\n"
2228                "class A {};\n"
2229                "void f() { f(); }\n"
2230                "}",
2231                LLVMWithNoNamespaceFix);
2232   verifyFormat("namespace N::inline D {\n"
2233                "class A {};\n"
2234                "void f() { f(); }\n"
2235                "}",
2236                LLVMWithNoNamespaceFix);
2237   verifyFormat("namespace N::inline D::E {\n"
2238                "class A {};\n"
2239                "void f() { f(); }\n"
2240                "}",
2241                LLVMWithNoNamespaceFix);
2242   verifyFormat("namespace [[deprecated(\"foo[bar\")]] some_namespace {\n"
2243                "class A {};\n"
2244                "void f() { f(); }\n"
2245                "}",
2246                LLVMWithNoNamespaceFix);
2247   verifyFormat("/* something */ namespace some_namespace {\n"
2248                "class A {};\n"
2249                "void f() { f(); }\n"
2250                "}",
2251                LLVMWithNoNamespaceFix);
2252   verifyFormat("namespace {\n"
2253                "class A {};\n"
2254                "void f() { f(); }\n"
2255                "}",
2256                LLVMWithNoNamespaceFix);
2257   verifyFormat("/* something */ namespace {\n"
2258                "class A {};\n"
2259                "void f() { f(); }\n"
2260                "}",
2261                LLVMWithNoNamespaceFix);
2262   verifyFormat("inline namespace X {\n"
2263                "class A {};\n"
2264                "void f() { f(); }\n"
2265                "}",
2266                LLVMWithNoNamespaceFix);
2267   verifyFormat("/* something */ inline namespace X {\n"
2268                "class A {};\n"
2269                "void f() { f(); }\n"
2270                "}",
2271                LLVMWithNoNamespaceFix);
2272   verifyFormat("export namespace X {\n"
2273                "class A {};\n"
2274                "void f() { f(); }\n"
2275                "}",
2276                LLVMWithNoNamespaceFix);
2277   verifyFormat("using namespace some_namespace;\n"
2278                "class A {};\n"
2279                "void f() { f(); }",
2280                LLVMWithNoNamespaceFix);
2281 
2282   // This code is more common than we thought; if we
2283   // layout this correctly the semicolon will go into
2284   // its own line, which is undesirable.
2285   verifyFormat("namespace {};", LLVMWithNoNamespaceFix);
2286   verifyFormat("namespace {\n"
2287                "class A {};\n"
2288                "};",
2289                LLVMWithNoNamespaceFix);
2290 
2291   verifyFormat("namespace {\n"
2292                "int SomeVariable = 0; // comment\n"
2293                "} // namespace",
2294                LLVMWithNoNamespaceFix);
2295   EXPECT_EQ("#ifndef HEADER_GUARD\n"
2296             "#define HEADER_GUARD\n"
2297             "namespace my_namespace {\n"
2298             "int i;\n"
2299             "} // my_namespace\n"
2300             "#endif // HEADER_GUARD",
2301             format("#ifndef HEADER_GUARD\n"
2302                    " #define HEADER_GUARD\n"
2303                    "   namespace my_namespace {\n"
2304                    "int i;\n"
2305                    "}    // my_namespace\n"
2306                    "#endif    // HEADER_GUARD",
2307                    LLVMWithNoNamespaceFix));
2308 
2309   EXPECT_EQ("namespace A::B {\n"
2310             "class C {};\n"
2311             "}",
2312             format("namespace A::B {\n"
2313                    "class C {};\n"
2314                    "}",
2315                    LLVMWithNoNamespaceFix));
2316 
2317   FormatStyle Style = getLLVMStyle();
2318   Style.NamespaceIndentation = FormatStyle::NI_All;
2319   EXPECT_EQ("namespace out {\n"
2320             "  int i;\n"
2321             "  namespace in {\n"
2322             "    int i;\n"
2323             "  } // namespace in\n"
2324             "} // namespace out",
2325             format("namespace out {\n"
2326                    "int i;\n"
2327                    "namespace in {\n"
2328                    "int i;\n"
2329                    "} // namespace in\n"
2330                    "} // namespace out",
2331                    Style));
2332 
2333   Style.NamespaceIndentation = FormatStyle::NI_Inner;
2334   EXPECT_EQ("namespace out {\n"
2335             "int i;\n"
2336             "namespace in {\n"
2337             "  int i;\n"
2338             "} // namespace in\n"
2339             "} // namespace out",
2340             format("namespace out {\n"
2341                    "int i;\n"
2342                    "namespace in {\n"
2343                    "int i;\n"
2344                    "} // namespace in\n"
2345                    "} // namespace out",
2346                    Style));
2347 }
2348 
2349 TEST_F(FormatTest, NamespaceMacros) {
2350   FormatStyle Style = getLLVMStyle();
2351   Style.NamespaceMacros.push_back("TESTSUITE");
2352 
2353   verifyFormat("TESTSUITE(A) {\n"
2354                "int foo();\n"
2355                "} // TESTSUITE(A)",
2356                Style);
2357 
2358   verifyFormat("TESTSUITE(A, B) {\n"
2359                "int foo();\n"
2360                "} // TESTSUITE(A)",
2361                Style);
2362 
2363   // Properly indent according to NamespaceIndentation style
2364   Style.NamespaceIndentation = FormatStyle::NI_All;
2365   verifyFormat("TESTSUITE(A) {\n"
2366                "  int foo();\n"
2367                "} // TESTSUITE(A)",
2368                Style);
2369   verifyFormat("TESTSUITE(A) {\n"
2370                "  namespace B {\n"
2371                "    int foo();\n"
2372                "  } // namespace B\n"
2373                "} // TESTSUITE(A)",
2374                Style);
2375   verifyFormat("namespace A {\n"
2376                "  TESTSUITE(B) {\n"
2377                "    int foo();\n"
2378                "  } // TESTSUITE(B)\n"
2379                "} // namespace A",
2380                Style);
2381 
2382   Style.NamespaceIndentation = FormatStyle::NI_Inner;
2383   verifyFormat("TESTSUITE(A) {\n"
2384                "TESTSUITE(B) {\n"
2385                "  int foo();\n"
2386                "} // TESTSUITE(B)\n"
2387                "} // TESTSUITE(A)",
2388                Style);
2389   verifyFormat("TESTSUITE(A) {\n"
2390                "namespace B {\n"
2391                "  int foo();\n"
2392                "} // namespace B\n"
2393                "} // TESTSUITE(A)",
2394                Style);
2395   verifyFormat("namespace A {\n"
2396                "TESTSUITE(B) {\n"
2397                "  int foo();\n"
2398                "} // TESTSUITE(B)\n"
2399                "} // namespace A",
2400                Style);
2401 
2402   // Properly merge namespace-macros blocks in CompactNamespaces mode
2403   Style.NamespaceIndentation = FormatStyle::NI_None;
2404   Style.CompactNamespaces = true;
2405   verifyFormat("TESTSUITE(A) { TESTSUITE(B) {\n"
2406                "}} // TESTSUITE(A::B)",
2407                Style);
2408 
2409   EXPECT_EQ("TESTSUITE(out) { TESTSUITE(in) {\n"
2410             "}} // TESTSUITE(out::in)",
2411             format("TESTSUITE(out) {\n"
2412                    "TESTSUITE(in) {\n"
2413                    "} // TESTSUITE(in)\n"
2414                    "} // TESTSUITE(out)",
2415                    Style));
2416 
2417   EXPECT_EQ("TESTSUITE(out) { TESTSUITE(in) {\n"
2418             "}} // TESTSUITE(out::in)",
2419             format("TESTSUITE(out) {\n"
2420                    "TESTSUITE(in) {\n"
2421                    "} // TESTSUITE(in)\n"
2422                    "} // TESTSUITE(out)",
2423                    Style));
2424 
2425   // Do not merge different namespaces/macros
2426   EXPECT_EQ("namespace out {\n"
2427             "TESTSUITE(in) {\n"
2428             "} // TESTSUITE(in)\n"
2429             "} // namespace out",
2430             format("namespace out {\n"
2431                    "TESTSUITE(in) {\n"
2432                    "} // TESTSUITE(in)\n"
2433                    "} // namespace out",
2434                    Style));
2435   EXPECT_EQ("TESTSUITE(out) {\n"
2436             "namespace in {\n"
2437             "} // namespace in\n"
2438             "} // TESTSUITE(out)",
2439             format("TESTSUITE(out) {\n"
2440                    "namespace in {\n"
2441                    "} // namespace in\n"
2442                    "} // TESTSUITE(out)",
2443                    Style));
2444   Style.NamespaceMacros.push_back("FOOBAR");
2445   EXPECT_EQ("TESTSUITE(out) {\n"
2446             "FOOBAR(in) {\n"
2447             "} // FOOBAR(in)\n"
2448             "} // TESTSUITE(out)",
2449             format("TESTSUITE(out) {\n"
2450                    "FOOBAR(in) {\n"
2451                    "} // FOOBAR(in)\n"
2452                    "} // TESTSUITE(out)",
2453                    Style));
2454 }
2455 
2456 TEST_F(FormatTest, FormatsCompactNamespaces) {
2457   FormatStyle Style = getLLVMStyle();
2458   Style.CompactNamespaces = true;
2459   Style.NamespaceMacros.push_back("TESTSUITE");
2460 
2461   verifyFormat("namespace A { namespace B {\n"
2462                "}} // namespace A::B",
2463                Style);
2464 
2465   EXPECT_EQ("namespace out { namespace in {\n"
2466             "}} // namespace out::in",
2467             format("namespace out {\n"
2468                    "namespace in {\n"
2469                    "} // namespace in\n"
2470                    "} // namespace out",
2471                    Style));
2472 
2473   // Only namespaces which have both consecutive opening and end get compacted
2474   EXPECT_EQ("namespace out {\n"
2475             "namespace in1 {\n"
2476             "} // namespace in1\n"
2477             "namespace in2 {\n"
2478             "} // namespace in2\n"
2479             "} // namespace out",
2480             format("namespace out {\n"
2481                    "namespace in1 {\n"
2482                    "} // namespace in1\n"
2483                    "namespace in2 {\n"
2484                    "} // namespace in2\n"
2485                    "} // namespace out",
2486                    Style));
2487 
2488   EXPECT_EQ("namespace out {\n"
2489             "int i;\n"
2490             "namespace in {\n"
2491             "int j;\n"
2492             "} // namespace in\n"
2493             "int k;\n"
2494             "} // namespace out",
2495             format("namespace out { int i;\n"
2496                    "namespace in { int j; } // namespace in\n"
2497                    "int k; } // namespace out",
2498                    Style));
2499 
2500   EXPECT_EQ("namespace A { namespace B { namespace C {\n"
2501             "}}} // namespace A::B::C\n",
2502             format("namespace A { namespace B {\n"
2503                    "namespace C {\n"
2504                    "}} // namespace B::C\n"
2505                    "} // namespace A\n",
2506                    Style));
2507 
2508   Style.ColumnLimit = 40;
2509   EXPECT_EQ("namespace aaaaaaaaaa {\n"
2510             "namespace bbbbbbbbbb {\n"
2511             "}} // namespace aaaaaaaaaa::bbbbbbbbbb",
2512             format("namespace aaaaaaaaaa {\n"
2513                    "namespace bbbbbbbbbb {\n"
2514                    "} // namespace bbbbbbbbbb\n"
2515                    "} // namespace aaaaaaaaaa",
2516                    Style));
2517 
2518   EXPECT_EQ("namespace aaaaaa { namespace bbbbbb {\n"
2519             "namespace cccccc {\n"
2520             "}}} // namespace aaaaaa::bbbbbb::cccccc",
2521             format("namespace aaaaaa {\n"
2522                    "namespace bbbbbb {\n"
2523                    "namespace cccccc {\n"
2524                    "} // namespace cccccc\n"
2525                    "} // namespace bbbbbb\n"
2526                    "} // namespace aaaaaa",
2527                    Style));
2528   Style.ColumnLimit = 80;
2529 
2530   // Extra semicolon after 'inner' closing brace prevents merging
2531   EXPECT_EQ("namespace out { namespace in {\n"
2532             "}; } // namespace out::in",
2533             format("namespace out {\n"
2534                    "namespace in {\n"
2535                    "}; // namespace in\n"
2536                    "} // namespace out",
2537                    Style));
2538 
2539   // Extra semicolon after 'outer' closing brace is conserved
2540   EXPECT_EQ("namespace out { namespace in {\n"
2541             "}}; // namespace out::in",
2542             format("namespace out {\n"
2543                    "namespace in {\n"
2544                    "} // namespace in\n"
2545                    "}; // namespace out",
2546                    Style));
2547 
2548   Style.NamespaceIndentation = FormatStyle::NI_All;
2549   EXPECT_EQ("namespace out { namespace in {\n"
2550             "  int i;\n"
2551             "}} // namespace out::in",
2552             format("namespace out {\n"
2553                    "namespace in {\n"
2554                    "int i;\n"
2555                    "} // namespace in\n"
2556                    "} // namespace out",
2557                    Style));
2558   EXPECT_EQ("namespace out { namespace mid {\n"
2559             "  namespace in {\n"
2560             "    int j;\n"
2561             "  } // namespace in\n"
2562             "  int k;\n"
2563             "}} // namespace out::mid",
2564             format("namespace out { namespace mid {\n"
2565                    "namespace in { int j; } // namespace in\n"
2566                    "int k; }} // namespace out::mid",
2567                    Style));
2568 
2569   Style.NamespaceIndentation = FormatStyle::NI_Inner;
2570   EXPECT_EQ("namespace out { namespace in {\n"
2571             "  int i;\n"
2572             "}} // namespace out::in",
2573             format("namespace out {\n"
2574                    "namespace in {\n"
2575                    "int i;\n"
2576                    "} // namespace in\n"
2577                    "} // namespace out",
2578                    Style));
2579   EXPECT_EQ("namespace out { namespace mid { namespace in {\n"
2580             "  int i;\n"
2581             "}}} // namespace out::mid::in",
2582             format("namespace out {\n"
2583                    "namespace mid {\n"
2584                    "namespace in {\n"
2585                    "int i;\n"
2586                    "} // namespace in\n"
2587                    "} // namespace mid\n"
2588                    "} // namespace out",
2589                    Style));
2590 }
2591 
2592 TEST_F(FormatTest, FormatsExternC) {
2593   verifyFormat("extern \"C\" {\nint a;");
2594   verifyFormat("extern \"C\" {}");
2595   verifyFormat("extern \"C\" {\n"
2596                "int foo();\n"
2597                "}");
2598   verifyFormat("extern \"C\" int foo() {}");
2599   verifyFormat("extern \"C\" int foo();");
2600   verifyFormat("extern \"C\" int foo() {\n"
2601                "  int i = 42;\n"
2602                "  return i;\n"
2603                "}");
2604 
2605   FormatStyle Style = getLLVMStyle();
2606   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2607   Style.BraceWrapping.AfterFunction = true;
2608   verifyFormat("extern \"C\" int foo() {}", Style);
2609   verifyFormat("extern \"C\" int foo();", Style);
2610   verifyFormat("extern \"C\" int foo()\n"
2611                "{\n"
2612                "  int i = 42;\n"
2613                "  return i;\n"
2614                "}",
2615                Style);
2616 
2617   Style.BraceWrapping.AfterExternBlock = true;
2618   Style.BraceWrapping.SplitEmptyRecord = false;
2619   verifyFormat("extern \"C\"\n"
2620                "{}",
2621                Style);
2622   verifyFormat("extern \"C\"\n"
2623                "{\n"
2624                "  int foo();\n"
2625                "}",
2626                Style);
2627 }
2628 
2629 TEST_F(FormatTest, IndentExternBlockStyle) {
2630   FormatStyle Style = getLLVMStyle();
2631   Style.IndentWidth = 2;
2632 
2633   Style.IndentExternBlock = FormatStyle::IEBS_Indent;
2634   verifyFormat("extern \"C\" { /*9*/\n}", Style);
2635   verifyFormat("extern \"C\" {\n"
2636                "  int foo10();\n"
2637                "}",
2638                Style);
2639 
2640   Style.IndentExternBlock = FormatStyle::IEBS_NoIndent;
2641   verifyFormat("extern \"C\" { /*11*/\n}", Style);
2642   verifyFormat("extern \"C\" {\n"
2643                "int foo12();\n"
2644                "}",
2645                Style);
2646 
2647   Style.IndentExternBlock = FormatStyle::IEBS_AfterExternBlock;
2648   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2649   Style.BraceWrapping.AfterExternBlock = true;
2650   verifyFormat("extern \"C\"\n{ /*13*/\n}", Style);
2651   verifyFormat("extern \"C\"\n{\n"
2652                "  int foo14();\n"
2653                "}",
2654                Style);
2655 
2656   Style.IndentExternBlock = FormatStyle::IEBS_AfterExternBlock;
2657   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2658   Style.BraceWrapping.AfterExternBlock = false;
2659   verifyFormat("extern \"C\" { /*15*/\n}", Style);
2660   verifyFormat("extern \"C\" {\n"
2661                "int foo16();\n"
2662                "}",
2663                Style);
2664 }
2665 
2666 TEST_F(FormatTest, FormatsInlineASM) {
2667   verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));");
2668   verifyFormat("asm(\"nop\" ::: \"memory\");");
2669   verifyFormat(
2670       "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n"
2671       "    \"cpuid\\n\\t\"\n"
2672       "    \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n"
2673       "    : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n"
2674       "    : \"a\"(value));");
2675   EXPECT_EQ(
2676       "void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n"
2677       "  __asm {\n"
2678       "        mov     edx,[that] // vtable in edx\n"
2679       "        mov     eax,methodIndex\n"
2680       "        call    [edx][eax*4] // stdcall\n"
2681       "  }\n"
2682       "}",
2683       format("void NS_InvokeByIndex(void *that,   unsigned int methodIndex) {\n"
2684              "    __asm {\n"
2685              "        mov     edx,[that] // vtable in edx\n"
2686              "        mov     eax,methodIndex\n"
2687              "        call    [edx][eax*4] // stdcall\n"
2688              "    }\n"
2689              "}"));
2690   EXPECT_EQ("_asm {\n"
2691             "  xor eax, eax;\n"
2692             "  cpuid;\n"
2693             "}",
2694             format("_asm {\n"
2695                    "  xor eax, eax;\n"
2696                    "  cpuid;\n"
2697                    "}"));
2698   verifyFormat("void function() {\n"
2699                "  // comment\n"
2700                "  asm(\"\");\n"
2701                "}");
2702   EXPECT_EQ("__asm {\n"
2703             "}\n"
2704             "int i;",
2705             format("__asm   {\n"
2706                    "}\n"
2707                    "int   i;"));
2708 }
2709 
2710 TEST_F(FormatTest, FormatTryCatch) {
2711   verifyFormat("try {\n"
2712                "  throw a * b;\n"
2713                "} catch (int a) {\n"
2714                "  // Do nothing.\n"
2715                "} catch (...) {\n"
2716                "  exit(42);\n"
2717                "}");
2718 
2719   // Function-level try statements.
2720   verifyFormat("int f() try { return 4; } catch (...) {\n"
2721                "  return 5;\n"
2722                "}");
2723   verifyFormat("class A {\n"
2724                "  int a;\n"
2725                "  A() try : a(0) {\n"
2726                "  } catch (...) {\n"
2727                "    throw;\n"
2728                "  }\n"
2729                "};\n");
2730   verifyFormat("class A {\n"
2731                "  int a;\n"
2732                "  A() try : a(0), b{1} {\n"
2733                "  } catch (...) {\n"
2734                "    throw;\n"
2735                "  }\n"
2736                "};\n");
2737   verifyFormat("class A {\n"
2738                "  int a;\n"
2739                "  A() try : a(0), b{1}, c{2} {\n"
2740                "  } catch (...) {\n"
2741                "    throw;\n"
2742                "  }\n"
2743                "};\n");
2744   verifyFormat("class A {\n"
2745                "  int a;\n"
2746                "  A() try : a(0), b{1}, c{2} {\n"
2747                "    { // New scope.\n"
2748                "    }\n"
2749                "  } catch (...) {\n"
2750                "    throw;\n"
2751                "  }\n"
2752                "};\n");
2753 
2754   // Incomplete try-catch blocks.
2755   verifyIncompleteFormat("try {} catch (");
2756 }
2757 
2758 TEST_F(FormatTest, FormatTryAsAVariable) {
2759   verifyFormat("int try;");
2760   verifyFormat("int try, size;");
2761   verifyFormat("try = foo();");
2762   verifyFormat("if (try < size) {\n  return true;\n}");
2763 
2764   verifyFormat("int catch;");
2765   verifyFormat("int catch, size;");
2766   verifyFormat("catch = foo();");
2767   verifyFormat("if (catch < size) {\n  return true;\n}");
2768 
2769   FormatStyle Style = getLLVMStyle();
2770   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2771   Style.BraceWrapping.AfterFunction = true;
2772   Style.BraceWrapping.BeforeCatch = true;
2773   verifyFormat("try {\n"
2774                "  int bar = 1;\n"
2775                "}\n"
2776                "catch (...) {\n"
2777                "  int bar = 1;\n"
2778                "}",
2779                Style);
2780   verifyFormat("#if NO_EX\n"
2781                "try\n"
2782                "#endif\n"
2783                "{\n"
2784                "}\n"
2785                "#if NO_EX\n"
2786                "catch (...) {\n"
2787                "}",
2788                Style);
2789   verifyFormat("try /* abc */ {\n"
2790                "  int bar = 1;\n"
2791                "}\n"
2792                "catch (...) {\n"
2793                "  int bar = 1;\n"
2794                "}",
2795                Style);
2796   verifyFormat("try\n"
2797                "// abc\n"
2798                "{\n"
2799                "  int bar = 1;\n"
2800                "}\n"
2801                "catch (...) {\n"
2802                "  int bar = 1;\n"
2803                "}",
2804                Style);
2805 }
2806 
2807 TEST_F(FormatTest, FormatSEHTryCatch) {
2808   verifyFormat("__try {\n"
2809                "  int a = b * c;\n"
2810                "} __except (EXCEPTION_EXECUTE_HANDLER) {\n"
2811                "  // Do nothing.\n"
2812                "}");
2813 
2814   verifyFormat("__try {\n"
2815                "  int a = b * c;\n"
2816                "} __finally {\n"
2817                "  // Do nothing.\n"
2818                "}");
2819 
2820   verifyFormat("DEBUG({\n"
2821                "  __try {\n"
2822                "  } __finally {\n"
2823                "  }\n"
2824                "});\n");
2825 }
2826 
2827 TEST_F(FormatTest, IncompleteTryCatchBlocks) {
2828   verifyFormat("try {\n"
2829                "  f();\n"
2830                "} catch {\n"
2831                "  g();\n"
2832                "}");
2833   verifyFormat("try {\n"
2834                "  f();\n"
2835                "} catch (A a) MACRO(x) {\n"
2836                "  g();\n"
2837                "} catch (B b) MACRO(x) {\n"
2838                "  g();\n"
2839                "}");
2840 }
2841 
2842 TEST_F(FormatTest, FormatTryCatchBraceStyles) {
2843   FormatStyle Style = getLLVMStyle();
2844   for (auto BraceStyle : {FormatStyle::BS_Attach, FormatStyle::BS_Mozilla,
2845                           FormatStyle::BS_WebKit}) {
2846     Style.BreakBeforeBraces = BraceStyle;
2847     verifyFormat("try {\n"
2848                  "  // something\n"
2849                  "} catch (...) {\n"
2850                  "  // something\n"
2851                  "}",
2852                  Style);
2853   }
2854   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
2855   verifyFormat("try {\n"
2856                "  // something\n"
2857                "}\n"
2858                "catch (...) {\n"
2859                "  // something\n"
2860                "}",
2861                Style);
2862   verifyFormat("__try {\n"
2863                "  // something\n"
2864                "}\n"
2865                "__finally {\n"
2866                "  // something\n"
2867                "}",
2868                Style);
2869   verifyFormat("@try {\n"
2870                "  // something\n"
2871                "}\n"
2872                "@finally {\n"
2873                "  // something\n"
2874                "}",
2875                Style);
2876   Style.BreakBeforeBraces = FormatStyle::BS_Allman;
2877   verifyFormat("try\n"
2878                "{\n"
2879                "  // something\n"
2880                "}\n"
2881                "catch (...)\n"
2882                "{\n"
2883                "  // something\n"
2884                "}",
2885                Style);
2886   Style.BreakBeforeBraces = FormatStyle::BS_Whitesmiths;
2887   verifyFormat("try\n"
2888                "  {\n"
2889                "  // something white\n"
2890                "  }\n"
2891                "catch (...)\n"
2892                "  {\n"
2893                "  // something white\n"
2894                "  }",
2895                Style);
2896   Style.BreakBeforeBraces = FormatStyle::BS_GNU;
2897   verifyFormat("try\n"
2898                "  {\n"
2899                "    // something\n"
2900                "  }\n"
2901                "catch (...)\n"
2902                "  {\n"
2903                "    // something\n"
2904                "  }",
2905                Style);
2906   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
2907   Style.BraceWrapping.BeforeCatch = true;
2908   verifyFormat("try {\n"
2909                "  // something\n"
2910                "}\n"
2911                "catch (...) {\n"
2912                "  // something\n"
2913                "}",
2914                Style);
2915 }
2916 
2917 TEST_F(FormatTest, StaticInitializers) {
2918   verifyFormat("static SomeClass SC = {1, 'a'};");
2919 
2920   verifyFormat("static SomeClass WithALoooooooooooooooooooongName = {\n"
2921                "    100000000, "
2922                "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};");
2923 
2924   // Here, everything other than the "}" would fit on a line.
2925   verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n"
2926                "    10000000000000000000000000};");
2927   EXPECT_EQ("S s = {a,\n"
2928             "\n"
2929             "       b};",
2930             format("S s = {\n"
2931                    "  a,\n"
2932                    "\n"
2933                    "  b\n"
2934                    "};"));
2935 
2936   // FIXME: This would fit into the column limit if we'd fit "{ {" on the first
2937   // line. However, the formatting looks a bit off and this probably doesn't
2938   // happen often in practice.
2939   verifyFormat("static int Variable[1] = {\n"
2940                "    {1000000000000000000000000000000000000}};",
2941                getLLVMStyleWithColumns(40));
2942 }
2943 
2944 TEST_F(FormatTest, DesignatedInitializers) {
2945   verifyFormat("const struct A a = {.a = 1, .b = 2};");
2946   verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n"
2947                "                    .bbbbbbbbbb = 2,\n"
2948                "                    .cccccccccc = 3,\n"
2949                "                    .dddddddddd = 4,\n"
2950                "                    .eeeeeeeeee = 5};");
2951   verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n"
2952                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n"
2953                "    .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n"
2954                "    .ccccccccccccccccccccccccccc = 3,\n"
2955                "    .ddddddddddddddddddddddddddd = 4,\n"
2956                "    .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};");
2957 
2958   verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};");
2959 
2960   verifyFormat("const struct A a = {[0] = 1, [1] = 2};");
2961   verifyFormat("const struct A a = {[1] = aaaaaaaaaa,\n"
2962                "                    [2] = bbbbbbbbbb,\n"
2963                "                    [3] = cccccccccc,\n"
2964                "                    [4] = dddddddddd,\n"
2965                "                    [5] = eeeeeeeeee};");
2966   verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n"
2967                "    [1] = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2968                "    [2] = bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
2969                "    [3] = cccccccccccccccccccccccccccccccccccccc,\n"
2970                "    [4] = dddddddddddddddddddddddddddddddddddddd,\n"
2971                "    [5] = eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee};");
2972 }
2973 
2974 TEST_F(FormatTest, NestedStaticInitializers) {
2975   verifyFormat("static A x = {{{}}};\n");
2976   verifyFormat("static A x = {{{init1, init2, init3, init4},\n"
2977                "               {init1, init2, init3, init4}}};",
2978                getLLVMStyleWithColumns(50));
2979 
2980   verifyFormat("somes Status::global_reps[3] = {\n"
2981                "    {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n"
2982                "    {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n"
2983                "    {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};",
2984                getLLVMStyleWithColumns(60));
2985   verifyGoogleFormat("SomeType Status::global_reps[3] = {\n"
2986                      "    {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n"
2987                      "    {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n"
2988                      "    {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};");
2989   verifyFormat("CGRect cg_rect = {{rect.fLeft, rect.fTop},\n"
2990                "                  {rect.fRight - rect.fLeft, rect.fBottom - "
2991                "rect.fTop}};");
2992 
2993   verifyFormat(
2994       "SomeArrayOfSomeType a = {\n"
2995       "    {{1, 2, 3},\n"
2996       "     {1, 2, 3},\n"
2997       "     {111111111111111111111111111111, 222222222222222222222222222222,\n"
2998       "      333333333333333333333333333333},\n"
2999       "     {1, 2, 3},\n"
3000       "     {1, 2, 3}}};");
3001   verifyFormat(
3002       "SomeArrayOfSomeType a = {\n"
3003       "    {{1, 2, 3}},\n"
3004       "    {{1, 2, 3}},\n"
3005       "    {{111111111111111111111111111111, 222222222222222222222222222222,\n"
3006       "      333333333333333333333333333333}},\n"
3007       "    {{1, 2, 3}},\n"
3008       "    {{1, 2, 3}}};");
3009 
3010   verifyFormat("struct {\n"
3011                "  unsigned bit;\n"
3012                "  const char *const name;\n"
3013                "} kBitsToOs[] = {{kOsMac, \"Mac\"},\n"
3014                "                 {kOsWin, \"Windows\"},\n"
3015                "                 {kOsLinux, \"Linux\"},\n"
3016                "                 {kOsCrOS, \"Chrome OS\"}};");
3017   verifyFormat("struct {\n"
3018                "  unsigned bit;\n"
3019                "  const char *const name;\n"
3020                "} kBitsToOs[] = {\n"
3021                "    {kOsMac, \"Mac\"},\n"
3022                "    {kOsWin, \"Windows\"},\n"
3023                "    {kOsLinux, \"Linux\"},\n"
3024                "    {kOsCrOS, \"Chrome OS\"},\n"
3025                "};");
3026 }
3027 
3028 TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) {
3029   verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro("
3030                "                      \\\n"
3031                "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)");
3032 }
3033 
3034 TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) {
3035   verifyFormat("virtual void write(ELFWriter *writerrr,\n"
3036                "                   OwningPtr<FileOutputBuffer> &buffer) = 0;");
3037 
3038   // Do break defaulted and deleted functions.
3039   verifyFormat("virtual void ~Deeeeeeeestructor() =\n"
3040                "    default;",
3041                getLLVMStyleWithColumns(40));
3042   verifyFormat("virtual void ~Deeeeeeeestructor() =\n"
3043                "    delete;",
3044                getLLVMStyleWithColumns(40));
3045 }
3046 
3047 TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) {
3048   verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3",
3049                getLLVMStyleWithColumns(40));
3050   verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"",
3051                getLLVMStyleWithColumns(40));
3052   EXPECT_EQ("#define Q                              \\\n"
3053             "  \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\"    \\\n"
3054             "  \"aaaaaaaa.cpp\"",
3055             format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"",
3056                    getLLVMStyleWithColumns(40)));
3057 }
3058 
3059 TEST_F(FormatTest, UnderstandsLinePPDirective) {
3060   EXPECT_EQ("# 123 \"A string literal\"",
3061             format("   #     123    \"A string literal\""));
3062 }
3063 
3064 TEST_F(FormatTest, LayoutUnknownPPDirective) {
3065   EXPECT_EQ("#;", format("#;"));
3066   verifyFormat("#\n;\n;\n;");
3067 }
3068 
3069 TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) {
3070   EXPECT_EQ("#line 42 \"test\"\n",
3071             format("#  \\\n  line  \\\n  42  \\\n  \"test\"\n"));
3072   EXPECT_EQ("#define A B\n", format("#  \\\n define  \\\n    A  \\\n       B\n",
3073                                     getLLVMStyleWithColumns(12)));
3074 }
3075 
3076 TEST_F(FormatTest, EndOfFileEndsPPDirective) {
3077   EXPECT_EQ("#line 42 \"test\"",
3078             format("#  \\\n  line  \\\n  42  \\\n  \"test\""));
3079   EXPECT_EQ("#define A B", format("#  \\\n define  \\\n    A  \\\n       B"));
3080 }
3081 
3082 TEST_F(FormatTest, DoesntRemoveUnknownTokens) {
3083   verifyFormat("#define A \\x20");
3084   verifyFormat("#define A \\ x20");
3085   EXPECT_EQ("#define A \\ x20", format("#define A \\   x20"));
3086   verifyFormat("#define A ''");
3087   verifyFormat("#define A ''qqq");
3088   verifyFormat("#define A `qqq");
3089   verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");");
3090   EXPECT_EQ("const char *c = STRINGIFY(\n"
3091             "\\na : b);",
3092             format("const char * c = STRINGIFY(\n"
3093                    "\\na : b);"));
3094 
3095   verifyFormat("a\r\\");
3096   verifyFormat("a\v\\");
3097   verifyFormat("a\f\\");
3098 }
3099 
3100 TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) {
3101   verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13));
3102   verifyFormat("#define A( \\\n    BB)", getLLVMStyleWithColumns(12));
3103   verifyFormat("#define A( \\\n    A, B)", getLLVMStyleWithColumns(12));
3104   // FIXME: We never break before the macro name.
3105   verifyFormat("#define AA( \\\n    B)", getLLVMStyleWithColumns(12));
3106 
3107   verifyFormat("#define A A\n#define A A");
3108   verifyFormat("#define A(X) A\n#define A A");
3109 
3110   verifyFormat("#define Something Other", getLLVMStyleWithColumns(23));
3111   verifyFormat("#define Something    \\\n  Other", getLLVMStyleWithColumns(22));
3112 }
3113 
3114 TEST_F(FormatTest, HandlePreprocessorDirectiveContext) {
3115   EXPECT_EQ("// somecomment\n"
3116             "#include \"a.h\"\n"
3117             "#define A(  \\\n"
3118             "    A, B)\n"
3119             "#include \"b.h\"\n"
3120             "// somecomment\n",
3121             format("  // somecomment\n"
3122                    "  #include \"a.h\"\n"
3123                    "#define A(A,\\\n"
3124                    "    B)\n"
3125                    "    #include \"b.h\"\n"
3126                    " // somecomment\n",
3127                    getLLVMStyleWithColumns(13)));
3128 }
3129 
3130 TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); }
3131 
3132 TEST_F(FormatTest, LayoutCodeInMacroDefinitions) {
3133   EXPECT_EQ("#define A    \\\n"
3134             "  c;         \\\n"
3135             "  e;\n"
3136             "f;",
3137             format("#define A c; e;\n"
3138                    "f;",
3139                    getLLVMStyleWithColumns(14)));
3140 }
3141 
3142 TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); }
3143 
3144 TEST_F(FormatTest, MacroDefinitionInsideStatement) {
3145   EXPECT_EQ("int x,\n"
3146             "#define A\n"
3147             "    y;",
3148             format("int x,\n#define A\ny;"));
3149 }
3150 
3151 TEST_F(FormatTest, HashInMacroDefinition) {
3152   EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle()));
3153   verifyFormat("#define A \\\n  b #c;", getLLVMStyleWithColumns(11));
3154   verifyFormat("#define A  \\\n"
3155                "  {        \\\n"
3156                "    f(#c); \\\n"
3157                "  }",
3158                getLLVMStyleWithColumns(11));
3159 
3160   verifyFormat("#define A(X)         \\\n"
3161                "  void function##X()",
3162                getLLVMStyleWithColumns(22));
3163 
3164   verifyFormat("#define A(a, b, c)   \\\n"
3165                "  void a##b##c()",
3166                getLLVMStyleWithColumns(22));
3167 
3168   verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
3169 }
3170 
3171 TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
3172   EXPECT_EQ("#define A (x)", format("#define A (x)"));
3173   EXPECT_EQ("#define A(x)", format("#define A(x)"));
3174 
3175   FormatStyle Style = getLLVMStyle();
3176   Style.SpaceBeforeParens = FormatStyle::SBPO_Never;
3177   verifyFormat("#define true ((foo)1)", Style);
3178   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
3179   verifyFormat("#define false((foo)0)", Style);
3180 }
3181 
3182 TEST_F(FormatTest, EmptyLinesInMacroDefinitions) {
3183   EXPECT_EQ("#define A b;", format("#define A \\\n"
3184                                    "          \\\n"
3185                                    "  b;",
3186                                    getLLVMStyleWithColumns(25)));
3187   EXPECT_EQ("#define A \\\n"
3188             "          \\\n"
3189             "  a;      \\\n"
3190             "  b;",
3191             format("#define A \\\n"
3192                    "          \\\n"
3193                    "  a;      \\\n"
3194                    "  b;",
3195                    getLLVMStyleWithColumns(11)));
3196   EXPECT_EQ("#define A \\\n"
3197             "  a;      \\\n"
3198             "          \\\n"
3199             "  b;",
3200             format("#define A \\\n"
3201                    "  a;      \\\n"
3202                    "          \\\n"
3203                    "  b;",
3204                    getLLVMStyleWithColumns(11)));
3205 }
3206 
3207 TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) {
3208   verifyIncompleteFormat("#define A :");
3209   verifyFormat("#define SOMECASES  \\\n"
3210                "  case 1:          \\\n"
3211                "  case 2\n",
3212                getLLVMStyleWithColumns(20));
3213   verifyFormat("#define MACRO(a) \\\n"
3214                "  if (a)         \\\n"
3215                "    f();         \\\n"
3216                "  else           \\\n"
3217                "    g()",
3218                getLLVMStyleWithColumns(18));
3219   verifyFormat("#define A template <typename T>");
3220   verifyIncompleteFormat("#define STR(x) #x\n"
3221                          "f(STR(this_is_a_string_literal{));");
3222   verifyFormat("#pragma omp threadprivate( \\\n"
3223                "    y)), // expected-warning",
3224                getLLVMStyleWithColumns(28));
3225   verifyFormat("#d, = };");
3226   verifyFormat("#if \"a");
3227   verifyIncompleteFormat("({\n"
3228                          "#define b     \\\n"
3229                          "  }           \\\n"
3230                          "  a\n"
3231                          "a",
3232                          getLLVMStyleWithColumns(15));
3233   verifyFormat("#define A     \\\n"
3234                "  {           \\\n"
3235                "    {\n"
3236                "#define B     \\\n"
3237                "  }           \\\n"
3238                "  }",
3239                getLLVMStyleWithColumns(15));
3240   verifyNoCrash("#if a\na(\n#else\n#endif\n{a");
3241   verifyNoCrash("a={0,1\n#if a\n#else\n;\n#endif\n}");
3242   verifyNoCrash("#if a\na(\n#else\n#endif\n) a {a,b,c,d,f,g};");
3243   verifyNoCrash("#ifdef A\n a(\n #else\n #endif\n) = []() {      \n)}");
3244 }
3245 
3246 TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) {
3247   verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline.
3248   EXPECT_EQ("class A : public QObject {\n"
3249             "  Q_OBJECT\n"
3250             "\n"
3251             "  A() {}\n"
3252             "};",
3253             format("class A  :  public QObject {\n"
3254                    "     Q_OBJECT\n"
3255                    "\n"
3256                    "  A() {\n}\n"
3257                    "}  ;"));
3258   EXPECT_EQ("MACRO\n"
3259             "/*static*/ int i;",
3260             format("MACRO\n"
3261                    " /*static*/ int   i;"));
3262   EXPECT_EQ("SOME_MACRO\n"
3263             "namespace {\n"
3264             "void f();\n"
3265             "} // namespace",
3266             format("SOME_MACRO\n"
3267                    "  namespace    {\n"
3268                    "void   f(  );\n"
3269                    "} // namespace"));
3270   // Only if the identifier contains at least 5 characters.
3271   EXPECT_EQ("HTTP f();", format("HTTP\nf();"));
3272   EXPECT_EQ("MACRO\nf();", format("MACRO\nf();"));
3273   // Only if everything is upper case.
3274   EXPECT_EQ("class A : public QObject {\n"
3275             "  Q_Object A() {}\n"
3276             "};",
3277             format("class A  :  public QObject {\n"
3278                    "     Q_Object\n"
3279                    "  A() {\n}\n"
3280                    "}  ;"));
3281 
3282   // Only if the next line can actually start an unwrapped line.
3283   EXPECT_EQ("SOME_WEIRD_LOG_MACRO << SomeThing;",
3284             format("SOME_WEIRD_LOG_MACRO\n"
3285                    "<< SomeThing;"));
3286 
3287   verifyFormat("VISIT_GL_CALL(GenBuffers, void, (GLsizei n, GLuint* buffers), "
3288                "(n, buffers))\n",
3289                getChromiumStyle(FormatStyle::LK_Cpp));
3290 
3291   // See PR41483
3292   EXPECT_EQ("/**/ FOO(a)\n"
3293             "FOO(b)",
3294             format("/**/ FOO(a)\n"
3295                    "FOO(b)"));
3296 }
3297 
3298 TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) {
3299   EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
3300             "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
3301             "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
3302             "class X {};\n"
3303             "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
3304             "int *createScopDetectionPass() { return 0; }",
3305             format("  INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
3306                    "  INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
3307                    "  INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
3308                    "  class X {};\n"
3309                    "  INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
3310                    "  int *createScopDetectionPass() { return 0; }"));
3311   // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as
3312   // braces, so that inner block is indented one level more.
3313   EXPECT_EQ("int q() {\n"
3314             "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
3315             "  IPC_MESSAGE_HANDLER(xxx, qqq)\n"
3316             "  IPC_END_MESSAGE_MAP()\n"
3317             "}",
3318             format("int q() {\n"
3319                    "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
3320                    "    IPC_MESSAGE_HANDLER(xxx, qqq)\n"
3321                    "  IPC_END_MESSAGE_MAP()\n"
3322                    "}"));
3323 
3324   // Same inside macros.
3325   EXPECT_EQ("#define LIST(L) \\\n"
3326             "  L(A)          \\\n"
3327             "  L(B)          \\\n"
3328             "  L(C)",
3329             format("#define LIST(L) \\\n"
3330                    "  L(A) \\\n"
3331                    "  L(B) \\\n"
3332                    "  L(C)",
3333                    getGoogleStyle()));
3334 
3335   // These must not be recognized as macros.
3336   EXPECT_EQ("int q() {\n"
3337             "  f(x);\n"
3338             "  f(x) {}\n"
3339             "  f(x)->g();\n"
3340             "  f(x)->*g();\n"
3341             "  f(x).g();\n"
3342             "  f(x) = x;\n"
3343             "  f(x) += x;\n"
3344             "  f(x) -= x;\n"
3345             "  f(x) *= x;\n"
3346             "  f(x) /= x;\n"
3347             "  f(x) %= x;\n"
3348             "  f(x) &= x;\n"
3349             "  f(x) |= x;\n"
3350             "  f(x) ^= x;\n"
3351             "  f(x) >>= x;\n"
3352             "  f(x) <<= x;\n"
3353             "  f(x)[y].z();\n"
3354             "  LOG(INFO) << x;\n"
3355             "  ifstream(x) >> x;\n"
3356             "}\n",
3357             format("int q() {\n"
3358                    "  f(x)\n;\n"
3359                    "  f(x)\n {}\n"
3360                    "  f(x)\n->g();\n"
3361                    "  f(x)\n->*g();\n"
3362                    "  f(x)\n.g();\n"
3363                    "  f(x)\n = x;\n"
3364                    "  f(x)\n += x;\n"
3365                    "  f(x)\n -= x;\n"
3366                    "  f(x)\n *= x;\n"
3367                    "  f(x)\n /= x;\n"
3368                    "  f(x)\n %= x;\n"
3369                    "  f(x)\n &= x;\n"
3370                    "  f(x)\n |= x;\n"
3371                    "  f(x)\n ^= x;\n"
3372                    "  f(x)\n >>= x;\n"
3373                    "  f(x)\n <<= x;\n"
3374                    "  f(x)\n[y].z();\n"
3375                    "  LOG(INFO)\n << x;\n"
3376                    "  ifstream(x)\n >> x;\n"
3377                    "}\n"));
3378   EXPECT_EQ("int q() {\n"
3379             "  F(x)\n"
3380             "  if (1) {\n"
3381             "  }\n"
3382             "  F(x)\n"
3383             "  while (1) {\n"
3384             "  }\n"
3385             "  F(x)\n"
3386             "  G(x);\n"
3387             "  F(x)\n"
3388             "  try {\n"
3389             "    Q();\n"
3390             "  } catch (...) {\n"
3391             "  }\n"
3392             "}\n",
3393             format("int q() {\n"
3394                    "F(x)\n"
3395                    "if (1) {}\n"
3396                    "F(x)\n"
3397                    "while (1) {}\n"
3398                    "F(x)\n"
3399                    "G(x);\n"
3400                    "F(x)\n"
3401                    "try { Q(); } catch (...) {}\n"
3402                    "}\n"));
3403   EXPECT_EQ("class A {\n"
3404             "  A() : t(0) {}\n"
3405             "  A(int i) noexcept() : {}\n"
3406             "  A(X x)\n" // FIXME: function-level try blocks are broken.
3407             "  try : t(0) {\n"
3408             "  } catch (...) {\n"
3409             "  }\n"
3410             "};",
3411             format("class A {\n"
3412                    "  A()\n : t(0) {}\n"
3413                    "  A(int i)\n noexcept() : {}\n"
3414                    "  A(X x)\n"
3415                    "  try : t(0) {} catch (...) {}\n"
3416                    "};"));
3417   FormatStyle Style = getLLVMStyle();
3418   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
3419   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Always;
3420   Style.BraceWrapping.AfterFunction = true;
3421   EXPECT_EQ("void f()\n"
3422             "try\n"
3423             "{\n"
3424             "}",
3425             format("void f() try {\n"
3426                    "}",
3427                    Style));
3428   EXPECT_EQ("class SomeClass {\n"
3429             "public:\n"
3430             "  SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
3431             "};",
3432             format("class SomeClass {\n"
3433                    "public:\n"
3434                    "  SomeClass()\n"
3435                    "  EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
3436                    "};"));
3437   EXPECT_EQ("class SomeClass {\n"
3438             "public:\n"
3439             "  SomeClass()\n"
3440             "      EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
3441             "};",
3442             format("class SomeClass {\n"
3443                    "public:\n"
3444                    "  SomeClass()\n"
3445                    "  EXCLUSIVE_LOCK_FUNCTION(mu_);\n"
3446                    "};",
3447                    getLLVMStyleWithColumns(40)));
3448 
3449   verifyFormat("MACRO(>)");
3450 
3451   // Some macros contain an implicit semicolon.
3452   Style = getLLVMStyle();
3453   Style.StatementMacros.push_back("FOO");
3454   verifyFormat("FOO(a) int b = 0;");
3455   verifyFormat("FOO(a)\n"
3456                "int b = 0;",
3457                Style);
3458   verifyFormat("FOO(a);\n"
3459                "int b = 0;",
3460                Style);
3461   verifyFormat("FOO(argc, argv, \"4.0.2\")\n"
3462                "int b = 0;",
3463                Style);
3464   verifyFormat("FOO()\n"
3465                "int b = 0;",
3466                Style);
3467   verifyFormat("FOO\n"
3468                "int b = 0;",
3469                Style);
3470   verifyFormat("void f() {\n"
3471                "  FOO(a)\n"
3472                "  return a;\n"
3473                "}",
3474                Style);
3475   verifyFormat("FOO(a)\n"
3476                "FOO(b)",
3477                Style);
3478   verifyFormat("int a = 0;\n"
3479                "FOO(b)\n"
3480                "int c = 0;",
3481                Style);
3482   verifyFormat("int a = 0;\n"
3483                "int x = FOO(a)\n"
3484                "int b = 0;",
3485                Style);
3486   verifyFormat("void foo(int a) { FOO(a) }\n"
3487                "uint32_t bar() {}",
3488                Style);
3489 }
3490 
3491 TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) {
3492   verifyFormat("#define A \\\n"
3493                "  f({     \\\n"
3494                "    g();  \\\n"
3495                "  });",
3496                getLLVMStyleWithColumns(11));
3497 }
3498 
3499 TEST_F(FormatTest, IndentPreprocessorDirectives) {
3500   FormatStyle Style = getLLVMStyle();
3501   Style.IndentPPDirectives = FormatStyle::PPDIS_None;
3502   Style.ColumnLimit = 40;
3503   verifyFormat("#ifdef _WIN32\n"
3504                "#define A 0\n"
3505                "#ifdef VAR2\n"
3506                "#define B 1\n"
3507                "#include <someheader.h>\n"
3508                "#define MACRO                          \\\n"
3509                "  some_very_long_func_aaaaaaaaaa();\n"
3510                "#endif\n"
3511                "#else\n"
3512                "#define A 1\n"
3513                "#endif",
3514                Style);
3515   Style.IndentPPDirectives = FormatStyle::PPDIS_AfterHash;
3516   verifyFormat("#ifdef _WIN32\n"
3517                "#  define A 0\n"
3518                "#  ifdef VAR2\n"
3519                "#    define B 1\n"
3520                "#    include <someheader.h>\n"
3521                "#    define MACRO                      \\\n"
3522                "      some_very_long_func_aaaaaaaaaa();\n"
3523                "#  endif\n"
3524                "#else\n"
3525                "#  define A 1\n"
3526                "#endif",
3527                Style);
3528   verifyFormat("#if A\n"
3529                "#  define MACRO                        \\\n"
3530                "    void a(int x) {                    \\\n"
3531                "      b();                             \\\n"
3532                "      c();                             \\\n"
3533                "      d();                             \\\n"
3534                "      e();                             \\\n"
3535                "      f();                             \\\n"
3536                "    }\n"
3537                "#endif",
3538                Style);
3539   // Comments before include guard.
3540   verifyFormat("// file comment\n"
3541                "// file comment\n"
3542                "#ifndef HEADER_H\n"
3543                "#define HEADER_H\n"
3544                "code();\n"
3545                "#endif",
3546                Style);
3547   // Test with include guards.
3548   verifyFormat("#ifndef HEADER_H\n"
3549                "#define HEADER_H\n"
3550                "code();\n"
3551                "#endif",
3552                Style);
3553   // Include guards must have a #define with the same variable immediately
3554   // after #ifndef.
3555   verifyFormat("#ifndef NOT_GUARD\n"
3556                "#  define FOO\n"
3557                "code();\n"
3558                "#endif",
3559                Style);
3560 
3561   // Include guards must cover the entire file.
3562   verifyFormat("code();\n"
3563                "code();\n"
3564                "#ifndef NOT_GUARD\n"
3565                "#  define NOT_GUARD\n"
3566                "code();\n"
3567                "#endif",
3568                Style);
3569   verifyFormat("#ifndef NOT_GUARD\n"
3570                "#  define NOT_GUARD\n"
3571                "code();\n"
3572                "#endif\n"
3573                "code();",
3574                Style);
3575   // Test with trailing blank lines.
3576   verifyFormat("#ifndef HEADER_H\n"
3577                "#define HEADER_H\n"
3578                "code();\n"
3579                "#endif\n",
3580                Style);
3581   // Include guards don't have #else.
3582   verifyFormat("#ifndef NOT_GUARD\n"
3583                "#  define NOT_GUARD\n"
3584                "code();\n"
3585                "#else\n"
3586                "#endif",
3587                Style);
3588   verifyFormat("#ifndef NOT_GUARD\n"
3589                "#  define NOT_GUARD\n"
3590                "code();\n"
3591                "#elif FOO\n"
3592                "#endif",
3593                Style);
3594   // Non-identifier #define after potential include guard.
3595   verifyFormat("#ifndef FOO\n"
3596                "#  define 1\n"
3597                "#endif\n",
3598                Style);
3599   // #if closes past last non-preprocessor line.
3600   verifyFormat("#ifndef FOO\n"
3601                "#define FOO\n"
3602                "#if 1\n"
3603                "int i;\n"
3604                "#  define A 0\n"
3605                "#endif\n"
3606                "#endif\n",
3607                Style);
3608   // Don't crash if there is an #elif directive without a condition.
3609   verifyFormat("#if 1\n"
3610                "int x;\n"
3611                "#elif\n"
3612                "int y;\n"
3613                "#else\n"
3614                "int z;\n"
3615                "#endif",
3616                Style);
3617   // FIXME: This doesn't handle the case where there's code between the
3618   // #ifndef and #define but all other conditions hold. This is because when
3619   // the #define line is parsed, UnwrappedLineParser::Lines doesn't hold the
3620   // previous code line yet, so we can't detect it.
3621   EXPECT_EQ("#ifndef NOT_GUARD\n"
3622             "code();\n"
3623             "#define NOT_GUARD\n"
3624             "code();\n"
3625             "#endif",
3626             format("#ifndef NOT_GUARD\n"
3627                    "code();\n"
3628                    "#  define NOT_GUARD\n"
3629                    "code();\n"
3630                    "#endif",
3631                    Style));
3632   // FIXME: This doesn't handle cases where legitimate preprocessor lines may
3633   // be outside an include guard. Examples are #pragma once and
3634   // #pragma GCC diagnostic, or anything else that does not change the meaning
3635   // of the file if it's included multiple times.
3636   EXPECT_EQ("#ifdef WIN32\n"
3637             "#  pragma once\n"
3638             "#endif\n"
3639             "#ifndef HEADER_H\n"
3640             "#  define HEADER_H\n"
3641             "code();\n"
3642             "#endif",
3643             format("#ifdef WIN32\n"
3644                    "#  pragma once\n"
3645                    "#endif\n"
3646                    "#ifndef HEADER_H\n"
3647                    "#define HEADER_H\n"
3648                    "code();\n"
3649                    "#endif",
3650                    Style));
3651   // FIXME: This does not detect when there is a single non-preprocessor line
3652   // in front of an include-guard-like structure where other conditions hold
3653   // because ScopedLineState hides the line.
3654   EXPECT_EQ("code();\n"
3655             "#ifndef HEADER_H\n"
3656             "#define HEADER_H\n"
3657             "code();\n"
3658             "#endif",
3659             format("code();\n"
3660                    "#ifndef HEADER_H\n"
3661                    "#  define HEADER_H\n"
3662                    "code();\n"
3663                    "#endif",
3664                    Style));
3665   // Keep comments aligned with #, otherwise indent comments normally. These
3666   // tests cannot use verifyFormat because messUp manipulates leading
3667   // whitespace.
3668   {
3669     const char *Expected = ""
3670                            "void f() {\n"
3671                            "#if 1\n"
3672                            "// Preprocessor aligned.\n"
3673                            "#  define A 0\n"
3674                            "  // Code. Separated by blank line.\n"
3675                            "\n"
3676                            "#  define B 0\n"
3677                            "  // Code. Not aligned with #\n"
3678                            "#  define C 0\n"
3679                            "#endif";
3680     const char *ToFormat = ""
3681                            "void f() {\n"
3682                            "#if 1\n"
3683                            "// Preprocessor aligned.\n"
3684                            "#  define A 0\n"
3685                            "// Code. Separated by blank line.\n"
3686                            "\n"
3687                            "#  define B 0\n"
3688                            "   // Code. Not aligned with #\n"
3689                            "#  define C 0\n"
3690                            "#endif";
3691     EXPECT_EQ(Expected, format(ToFormat, Style));
3692     EXPECT_EQ(Expected, format(Expected, Style));
3693   }
3694   // Keep block quotes aligned.
3695   {
3696     const char *Expected = ""
3697                            "void f() {\n"
3698                            "#if 1\n"
3699                            "/* Preprocessor aligned. */\n"
3700                            "#  define A 0\n"
3701                            "  /* Code. Separated by blank line. */\n"
3702                            "\n"
3703                            "#  define B 0\n"
3704                            "  /* Code. Not aligned with # */\n"
3705                            "#  define C 0\n"
3706                            "#endif";
3707     const char *ToFormat = ""
3708                            "void f() {\n"
3709                            "#if 1\n"
3710                            "/* Preprocessor aligned. */\n"
3711                            "#  define A 0\n"
3712                            "/* Code. Separated by blank line. */\n"
3713                            "\n"
3714                            "#  define B 0\n"
3715                            "   /* Code. Not aligned with # */\n"
3716                            "#  define C 0\n"
3717                            "#endif";
3718     EXPECT_EQ(Expected, format(ToFormat, Style));
3719     EXPECT_EQ(Expected, format(Expected, Style));
3720   }
3721   // Keep comments aligned with un-indented directives.
3722   {
3723     const char *Expected = ""
3724                            "void f() {\n"
3725                            "// Preprocessor aligned.\n"
3726                            "#define A 0\n"
3727                            "  // Code. Separated by blank line.\n"
3728                            "\n"
3729                            "#define B 0\n"
3730                            "  // Code. Not aligned with #\n"
3731                            "#define C 0\n";
3732     const char *ToFormat = ""
3733                            "void f() {\n"
3734                            "// Preprocessor aligned.\n"
3735                            "#define A 0\n"
3736                            "// Code. Separated by blank line.\n"
3737                            "\n"
3738                            "#define B 0\n"
3739                            "   // Code. Not aligned with #\n"
3740                            "#define C 0\n";
3741     EXPECT_EQ(Expected, format(ToFormat, Style));
3742     EXPECT_EQ(Expected, format(Expected, Style));
3743   }
3744   // Test AfterHash with tabs.
3745   {
3746     FormatStyle Tabbed = Style;
3747     Tabbed.UseTab = FormatStyle::UT_Always;
3748     Tabbed.IndentWidth = 8;
3749     Tabbed.TabWidth = 8;
3750     verifyFormat("#ifdef _WIN32\n"
3751                  "#\tdefine A 0\n"
3752                  "#\tifdef VAR2\n"
3753                  "#\t\tdefine B 1\n"
3754                  "#\t\tinclude <someheader.h>\n"
3755                  "#\t\tdefine MACRO          \\\n"
3756                  "\t\t\tsome_very_long_func_aaaaaaaaaa();\n"
3757                  "#\tendif\n"
3758                  "#else\n"
3759                  "#\tdefine A 1\n"
3760                  "#endif",
3761                  Tabbed);
3762   }
3763 
3764   // Regression test: Multiline-macro inside include guards.
3765   verifyFormat("#ifndef HEADER_H\n"
3766                "#define HEADER_H\n"
3767                "#define A()        \\\n"
3768                "  int i;           \\\n"
3769                "  int j;\n"
3770                "#endif // HEADER_H",
3771                getLLVMStyleWithColumns(20));
3772 
3773   Style.IndentPPDirectives = FormatStyle::PPDIS_BeforeHash;
3774   // Basic before hash indent tests
3775   verifyFormat("#ifdef _WIN32\n"
3776                "  #define A 0\n"
3777                "  #ifdef VAR2\n"
3778                "    #define B 1\n"
3779                "    #include <someheader.h>\n"
3780                "    #define MACRO                      \\\n"
3781                "      some_very_long_func_aaaaaaaaaa();\n"
3782                "  #endif\n"
3783                "#else\n"
3784                "  #define A 1\n"
3785                "#endif",
3786                Style);
3787   verifyFormat("#if A\n"
3788                "  #define MACRO                        \\\n"
3789                "    void a(int x) {                    \\\n"
3790                "      b();                             \\\n"
3791                "      c();                             \\\n"
3792                "      d();                             \\\n"
3793                "      e();                             \\\n"
3794                "      f();                             \\\n"
3795                "    }\n"
3796                "#endif",
3797                Style);
3798   // Keep comments aligned with indented directives. These
3799   // tests cannot use verifyFormat because messUp manipulates leading
3800   // whitespace.
3801   {
3802     const char *Expected = "void f() {\n"
3803                            "// Aligned to preprocessor.\n"
3804                            "#if 1\n"
3805                            "  // Aligned to code.\n"
3806                            "  int a;\n"
3807                            "  #if 1\n"
3808                            "    // Aligned to preprocessor.\n"
3809                            "    #define A 0\n"
3810                            "  // Aligned to code.\n"
3811                            "  int b;\n"
3812                            "  #endif\n"
3813                            "#endif\n"
3814                            "}";
3815     const char *ToFormat = "void f() {\n"
3816                            "// Aligned to preprocessor.\n"
3817                            "#if 1\n"
3818                            "// Aligned to code.\n"
3819                            "int a;\n"
3820                            "#if 1\n"
3821                            "// Aligned to preprocessor.\n"
3822                            "#define A 0\n"
3823                            "// Aligned to code.\n"
3824                            "int b;\n"
3825                            "#endif\n"
3826                            "#endif\n"
3827                            "}";
3828     EXPECT_EQ(Expected, format(ToFormat, Style));
3829     EXPECT_EQ(Expected, format(Expected, Style));
3830   }
3831   {
3832     const char *Expected = "void f() {\n"
3833                            "/* Aligned to preprocessor. */\n"
3834                            "#if 1\n"
3835                            "  /* Aligned to code. */\n"
3836                            "  int a;\n"
3837                            "  #if 1\n"
3838                            "    /* Aligned to preprocessor. */\n"
3839                            "    #define A 0\n"
3840                            "  /* Aligned to code. */\n"
3841                            "  int b;\n"
3842                            "  #endif\n"
3843                            "#endif\n"
3844                            "}";
3845     const char *ToFormat = "void f() {\n"
3846                            "/* Aligned to preprocessor. */\n"
3847                            "#if 1\n"
3848                            "/* Aligned to code. */\n"
3849                            "int a;\n"
3850                            "#if 1\n"
3851                            "/* Aligned to preprocessor. */\n"
3852                            "#define A 0\n"
3853                            "/* Aligned to code. */\n"
3854                            "int b;\n"
3855                            "#endif\n"
3856                            "#endif\n"
3857                            "}";
3858     EXPECT_EQ(Expected, format(ToFormat, Style));
3859     EXPECT_EQ(Expected, format(Expected, Style));
3860   }
3861 
3862   // Test single comment before preprocessor
3863   verifyFormat("// Comment\n"
3864                "\n"
3865                "#if 1\n"
3866                "#endif",
3867                Style);
3868 }
3869 
3870 TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) {
3871   verifyFormat("{\n  { a #c; }\n}");
3872 }
3873 
3874 TEST_F(FormatTest, FormatUnbalancedStructuralElements) {
3875   EXPECT_EQ("#define A \\\n  {       \\\n    {\nint i;",
3876             format("#define A { {\nint i;", getLLVMStyleWithColumns(11)));
3877   EXPECT_EQ("#define A \\\n  }       \\\n  }\nint i;",
3878             format("#define A } }\nint i;", getLLVMStyleWithColumns(11)));
3879 }
3880 
3881 TEST_F(FormatTest, EscapedNewlines) {
3882   FormatStyle Narrow = getLLVMStyleWithColumns(11);
3883   EXPECT_EQ("#define A \\\n  int i;  \\\n  int j;",
3884             format("#define A \\\nint i;\\\n  int j;", Narrow));
3885   EXPECT_EQ("#define A\n\nint i;", format("#define A \\\n\n int i;"));
3886   EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();"));
3887   EXPECT_EQ("/* \\  \\  \\\n */", format("\\\n/* \\  \\  \\\n */"));
3888   EXPECT_EQ("<a\n\\\\\n>", format("<a\n\\\\\n>"));
3889 
3890   FormatStyle AlignLeft = getLLVMStyle();
3891   AlignLeft.AlignEscapedNewlines = FormatStyle::ENAS_Left;
3892   EXPECT_EQ("#define MACRO(x) \\\n"
3893             "private:         \\\n"
3894             "  int x(int a);\n",
3895             format("#define MACRO(x) \\\n"
3896                    "private:         \\\n"
3897                    "  int x(int a);\n",
3898                    AlignLeft));
3899 
3900   // CRLF line endings
3901   EXPECT_EQ("#define A \\\r\n  int i;  \\\r\n  int j;",
3902             format("#define A \\\r\nint i;\\\r\n  int j;", Narrow));
3903   EXPECT_EQ("#define A\r\n\r\nint i;", format("#define A \\\r\n\r\n int i;"));
3904   EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();"));
3905   EXPECT_EQ("/* \\  \\  \\\r\n */", format("\\\r\n/* \\  \\  \\\r\n */"));
3906   EXPECT_EQ("<a\r\n\\\\\r\n>", format("<a\r\n\\\\\r\n>"));
3907   EXPECT_EQ("#define MACRO(x) \\\r\n"
3908             "private:         \\\r\n"
3909             "  int x(int a);\r\n",
3910             format("#define MACRO(x) \\\r\n"
3911                    "private:         \\\r\n"
3912                    "  int x(int a);\r\n",
3913                    AlignLeft));
3914 
3915   FormatStyle DontAlign = getLLVMStyle();
3916   DontAlign.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
3917   DontAlign.MaxEmptyLinesToKeep = 3;
3918   // FIXME: can't use verifyFormat here because the newline before
3919   // "public:" is not inserted the first time it's reformatted
3920   EXPECT_EQ("#define A \\\n"
3921             "  class Foo { \\\n"
3922             "    void bar(); \\\n"
3923             "\\\n"
3924             "\\\n"
3925             "\\\n"
3926             "  public: \\\n"
3927             "    void baz(); \\\n"
3928             "  };",
3929             format("#define A \\\n"
3930                    "  class Foo { \\\n"
3931                    "    void bar(); \\\n"
3932                    "\\\n"
3933                    "\\\n"
3934                    "\\\n"
3935                    "  public: \\\n"
3936                    "    void baz(); \\\n"
3937                    "  };",
3938                    DontAlign));
3939 }
3940 
3941 TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) {
3942   verifyFormat("#define A \\\n"
3943                "  int v(  \\\n"
3944                "      a); \\\n"
3945                "  int i;",
3946                getLLVMStyleWithColumns(11));
3947 }
3948 
3949 TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) {
3950   EXPECT_EQ(
3951       "#define ALooooooooooooooooooooooooooooooooooooooongMacro("
3952       "                      \\\n"
3953       "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
3954       "\n"
3955       "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
3956       "    aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n",
3957       format("  #define   ALooooooooooooooooooooooooooooooooooooooongMacro("
3958              "\\\n"
3959              "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
3960              "  \n"
3961              "   AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
3962              "  aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n"));
3963 }
3964 
3965 TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) {
3966   EXPECT_EQ("int\n"
3967             "#define A\n"
3968             "    a;",
3969             format("int\n#define A\na;"));
3970   verifyFormat("functionCallTo(\n"
3971                "    someOtherFunction(\n"
3972                "        withSomeParameters, whichInSequence,\n"
3973                "        areLongerThanALine(andAnotherCall,\n"
3974                "#define A B\n"
3975                "                           withMoreParamters,\n"
3976                "                           whichStronglyInfluenceTheLayout),\n"
3977                "        andMoreParameters),\n"
3978                "    trailing);",
3979                getLLVMStyleWithColumns(69));
3980   verifyFormat("Foo::Foo()\n"
3981                "#ifdef BAR\n"
3982                "    : baz(0)\n"
3983                "#endif\n"
3984                "{\n"
3985                "}");
3986   verifyFormat("void f() {\n"
3987                "  if (true)\n"
3988                "#ifdef A\n"
3989                "    f(42);\n"
3990                "  x();\n"
3991                "#else\n"
3992                "    g();\n"
3993                "  x();\n"
3994                "#endif\n"
3995                "}");
3996   verifyFormat("void f(param1, param2,\n"
3997                "       param3,\n"
3998                "#ifdef A\n"
3999                "       param4(param5,\n"
4000                "#ifdef A1\n"
4001                "              param6,\n"
4002                "#ifdef A2\n"
4003                "              param7),\n"
4004                "#else\n"
4005                "              param8),\n"
4006                "       param9,\n"
4007                "#endif\n"
4008                "       param10,\n"
4009                "#endif\n"
4010                "       param11)\n"
4011                "#else\n"
4012                "       param12)\n"
4013                "#endif\n"
4014                "{\n"
4015                "  x();\n"
4016                "}",
4017                getLLVMStyleWithColumns(28));
4018   verifyFormat("#if 1\n"
4019                "int i;");
4020   verifyFormat("#if 1\n"
4021                "#endif\n"
4022                "#if 1\n"
4023                "#else\n"
4024                "#endif\n");
4025   verifyFormat("DEBUG({\n"
4026                "  return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4027                "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
4028                "});\n"
4029                "#if a\n"
4030                "#else\n"
4031                "#endif");
4032 
4033   verifyIncompleteFormat("void f(\n"
4034                          "#if A\n"
4035                          ");\n"
4036                          "#else\n"
4037                          "#endif");
4038 }
4039 
4040 TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) {
4041   verifyFormat("#endif\n"
4042                "#if B");
4043 }
4044 
4045 TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) {
4046   FormatStyle SingleLine = getLLVMStyle();
4047   SingleLine.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_WithoutElse;
4048   verifyFormat("#if 0\n"
4049                "#elif 1\n"
4050                "#endif\n"
4051                "void foo() {\n"
4052                "  if (test) foo2();\n"
4053                "}",
4054                SingleLine);
4055 }
4056 
4057 TEST_F(FormatTest, LayoutBlockInsideParens) {
4058   verifyFormat("functionCall({ int i; });");
4059   verifyFormat("functionCall({\n"
4060                "  int i;\n"
4061                "  int j;\n"
4062                "});");
4063   verifyFormat("functionCall(\n"
4064                "    {\n"
4065                "      int i;\n"
4066                "      int j;\n"
4067                "    },\n"
4068                "    aaaa, bbbb, cccc);");
4069   verifyFormat("functionA(functionB({\n"
4070                "            int i;\n"
4071                "            int j;\n"
4072                "          }),\n"
4073                "          aaaa, bbbb, cccc);");
4074   verifyFormat("functionCall(\n"
4075                "    {\n"
4076                "      int i;\n"
4077                "      int j;\n"
4078                "    },\n"
4079                "    aaaa, bbbb, // comment\n"
4080                "    cccc);");
4081   verifyFormat("functionA(functionB({\n"
4082                "            int i;\n"
4083                "            int j;\n"
4084                "          }),\n"
4085                "          aaaa, bbbb, // comment\n"
4086                "          cccc);");
4087   verifyFormat("functionCall(aaaa, bbbb, { int i; });");
4088   verifyFormat("functionCall(aaaa, bbbb, {\n"
4089                "  int i;\n"
4090                "  int j;\n"
4091                "});");
4092   verifyFormat(
4093       "Aaa(\n" // FIXME: There shouldn't be a linebreak here.
4094       "    {\n"
4095       "      int i; // break\n"
4096       "    },\n"
4097       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
4098       "                                     ccccccccccccccccc));");
4099   verifyFormat("DEBUG({\n"
4100                "  if (a)\n"
4101                "    f();\n"
4102                "});");
4103 }
4104 
4105 TEST_F(FormatTest, LayoutBlockInsideStatement) {
4106   EXPECT_EQ("SOME_MACRO { int i; }\n"
4107             "int i;",
4108             format("  SOME_MACRO  {int i;}  int i;"));
4109 }
4110 
4111 TEST_F(FormatTest, LayoutNestedBlocks) {
4112   verifyFormat("void AddOsStrings(unsigned bitmask) {\n"
4113                "  struct s {\n"
4114                "    int i;\n"
4115                "  };\n"
4116                "  s kBitsToOs[] = {{10}};\n"
4117                "  for (int i = 0; i < 10; ++i)\n"
4118                "    return;\n"
4119                "}");
4120   verifyFormat("call(parameter, {\n"
4121                "  something();\n"
4122                "  // Comment using all columns.\n"
4123                "  somethingelse();\n"
4124                "});",
4125                getLLVMStyleWithColumns(40));
4126   verifyFormat("DEBUG( //\n"
4127                "    { f(); }, a);");
4128   verifyFormat("DEBUG( //\n"
4129                "    {\n"
4130                "      f(); //\n"
4131                "    },\n"
4132                "    a);");
4133 
4134   EXPECT_EQ("call(parameter, {\n"
4135             "  something();\n"
4136             "  // Comment too\n"
4137             "  // looooooooooong.\n"
4138             "  somethingElse();\n"
4139             "});",
4140             format("call(parameter, {\n"
4141                    "  something();\n"
4142                    "  // Comment too looooooooooong.\n"
4143                    "  somethingElse();\n"
4144                    "});",
4145                    getLLVMStyleWithColumns(29)));
4146   EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int   i; });"));
4147   EXPECT_EQ("DEBUG({ // comment\n"
4148             "  int i;\n"
4149             "});",
4150             format("DEBUG({ // comment\n"
4151                    "int  i;\n"
4152                    "});"));
4153   EXPECT_EQ("DEBUG({\n"
4154             "  int i;\n"
4155             "\n"
4156             "  // comment\n"
4157             "  int j;\n"
4158             "});",
4159             format("DEBUG({\n"
4160                    "  int  i;\n"
4161                    "\n"
4162                    "  // comment\n"
4163                    "  int  j;\n"
4164                    "});"));
4165 
4166   verifyFormat("DEBUG({\n"
4167                "  if (a)\n"
4168                "    return;\n"
4169                "});");
4170   verifyGoogleFormat("DEBUG({\n"
4171                      "  if (a) return;\n"
4172                      "});");
4173   FormatStyle Style = getGoogleStyle();
4174   Style.ColumnLimit = 45;
4175   verifyFormat("Debug(\n"
4176                "    aaaaa,\n"
4177                "    {\n"
4178                "      if (aaaaaaaaaaaaaaaaaaaaaaaa) return;\n"
4179                "    },\n"
4180                "    a);",
4181                Style);
4182 
4183   verifyFormat("SomeFunction({MACRO({ return output; }), b});");
4184 
4185   verifyNoCrash("^{v^{a}}");
4186 }
4187 
4188 TEST_F(FormatTest, FormatNestedBlocksInMacros) {
4189   EXPECT_EQ("#define MACRO()                     \\\n"
4190             "  Debug(aaa, /* force line break */ \\\n"
4191             "        {                           \\\n"
4192             "          int i;                    \\\n"
4193             "          int j;                    \\\n"
4194             "        })",
4195             format("#define   MACRO()   Debug(aaa,  /* force line break */ \\\n"
4196                    "          {  int   i;  int  j;   })",
4197                    getGoogleStyle()));
4198 
4199   EXPECT_EQ("#define A                                       \\\n"
4200             "  [] {                                          \\\n"
4201             "    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx(        \\\n"
4202             "        xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); \\\n"
4203             "  }",
4204             format("#define A [] { xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx( \\\n"
4205                    "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); }",
4206                    getGoogleStyle()));
4207 }
4208 
4209 TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
4210   EXPECT_EQ("{}", format("{}"));
4211   verifyFormat("enum E {};");
4212   verifyFormat("enum E {}");
4213   FormatStyle Style = getLLVMStyle();
4214   Style.SpaceInEmptyBlock = true;
4215   EXPECT_EQ("void f() { }", format("void f() {}", Style));
4216   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
4217   EXPECT_EQ("while (true) { }", format("while (true) {}", Style));
4218 }
4219 
4220 TEST_F(FormatTest, FormatBeginBlockEndMacros) {
4221   FormatStyle Style = getLLVMStyle();
4222   Style.MacroBlockBegin = "^[A-Z_]+_BEGIN$";
4223   Style.MacroBlockEnd = "^[A-Z_]+_END$";
4224   verifyFormat("FOO_BEGIN\n"
4225                "  FOO_ENTRY\n"
4226                "FOO_END",
4227                Style);
4228   verifyFormat("FOO_BEGIN\n"
4229                "  NESTED_FOO_BEGIN\n"
4230                "    NESTED_FOO_ENTRY\n"
4231                "  NESTED_FOO_END\n"
4232                "FOO_END",
4233                Style);
4234   verifyFormat("FOO_BEGIN(Foo, Bar)\n"
4235                "  int x;\n"
4236                "  x = 1;\n"
4237                "FOO_END(Baz)",
4238                Style);
4239 }
4240 
4241 //===----------------------------------------------------------------------===//
4242 // Line break tests.
4243 //===----------------------------------------------------------------------===//
4244 
4245 TEST_F(FormatTest, PreventConfusingIndents) {
4246   verifyFormat(
4247       "void f() {\n"
4248       "  SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
4249       "                         parameter, parameter, parameter)),\n"
4250       "                     SecondLongCall(parameter));\n"
4251       "}");
4252   verifyFormat(
4253       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
4254       "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
4255       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
4256       "    aaaaaaaaaaaaaaaaaaaaaaaa);");
4257   verifyFormat(
4258       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4259       "    [aaaaaaaaaaaaaaaaaaaaaaaa\n"
4260       "         [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n"
4261       "         [aaaaaaaaaaaaaaaaaaaaaaaa]];");
4262   verifyFormat(
4263       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
4264       "    aaaaaaaaaaaaaaaaaaaaaaaa<\n"
4265       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n"
4266       "    aaaaaaaaaaaaaaaaaaaaaaaa>;");
4267   verifyFormat("int a = bbbb && ccc &&\n"
4268                "        fffff(\n"
4269                "#define A Just forcing a new line\n"
4270                "            ddd);");
4271 }
4272 
4273 TEST_F(FormatTest, LineBreakingInBinaryExpressions) {
4274   verifyFormat(
4275       "bool aaaaaaa =\n"
4276       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n"
4277       "    bbbbbbbb();");
4278   verifyFormat(
4279       "bool aaaaaaa =\n"
4280       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n"
4281       "    bbbbbbbb();");
4282 
4283   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
4284                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n"
4285                "    ccccccccc == ddddddddddd;");
4286   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
4287                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n"
4288                "    ccccccccc == ddddddddddd;");
4289   verifyFormat(
4290       "bool aaaaaaaaaaaaaaaaaaaaa =\n"
4291       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n"
4292       "    ccccccccc == ddddddddddd;");
4293 
4294   verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
4295                "                 aaaaaa) &&\n"
4296                "         bbbbbb && cccccc;");
4297   verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
4298                "                 aaaaaa) >>\n"
4299                "         bbbbbb;");
4300   verifyFormat("aa = Whitespaces.addUntouchableComment(\n"
4301                "    SourceMgr.getSpellingColumnNumber(\n"
4302                "        TheLine.Last->FormatTok.Tok.getLocation()) -\n"
4303                "    1);");
4304 
4305   verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
4306                "     bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n"
4307                "    cccccc) {\n}");
4308   verifyFormat("if constexpr ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
4309                "               bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaa\n"
4310                "              cccccc) {\n}");
4311   verifyFormat("if CONSTEXPR ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
4312                "               bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaa\n"
4313                "              cccccc) {\n}");
4314   verifyFormat("b = a &&\n"
4315                "    // Comment\n"
4316                "    b.c && d;");
4317 
4318   // If the LHS of a comparison is not a binary expression itself, the
4319   // additional linebreak confuses many people.
4320   verifyFormat(
4321       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
4322       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n"
4323       "}");
4324   verifyFormat(
4325       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
4326       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
4327       "}");
4328   verifyFormat(
4329       "if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n"
4330       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
4331       "}");
4332   verifyFormat(
4333       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
4334       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) <=> 5) {\n"
4335       "}");
4336   // Even explicit parentheses stress the precedence enough to make the
4337   // additional break unnecessary.
4338   verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4339                "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n"
4340                "}");
4341   // This cases is borderline, but with the indentation it is still readable.
4342   verifyFormat(
4343       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
4344       "        aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4345       "                               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
4346       "}",
4347       getLLVMStyleWithColumns(75));
4348 
4349   // If the LHS is a binary expression, we should still use the additional break
4350   // as otherwise the formatting hides the operator precedence.
4351   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4352                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
4353                "    5) {\n"
4354                "}");
4355   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4356                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa <=>\n"
4357                "    5) {\n"
4358                "}");
4359 
4360   FormatStyle OnePerLine = getLLVMStyle();
4361   OnePerLine.BinPackParameters = false;
4362   verifyFormat(
4363       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
4364       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
4365       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}",
4366       OnePerLine);
4367 
4368   verifyFormat("int i = someFunction(aaaaaaa, 0)\n"
4369                "                .aaa(aaaaaaaaaaaaa) *\n"
4370                "            aaaaaaa +\n"
4371                "        aaaaaaa;",
4372                getLLVMStyleWithColumns(40));
4373 }
4374 
4375 TEST_F(FormatTest, ExpressionIndentation) {
4376   verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4377                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4378                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
4379                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
4380                "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n"
4381                "                     bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n"
4382                "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
4383                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n"
4384                "                 ccccccccccccccccccccccccccccccccccccccccc;");
4385   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
4386                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4387                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
4388                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
4389   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4390                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
4391                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
4392                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
4393   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
4394                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
4395                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4396                "        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
4397   verifyFormat("if () {\n"
4398                "} else if (aaaaa && bbbbb > // break\n"
4399                "                        ccccc) {\n"
4400                "}");
4401   verifyFormat("if () {\n"
4402                "} else if constexpr (aaaaa && bbbbb > // break\n"
4403                "                                  ccccc) {\n"
4404                "}");
4405   verifyFormat("if () {\n"
4406                "} else if CONSTEXPR (aaaaa && bbbbb > // break\n"
4407                "                                  ccccc) {\n"
4408                "}");
4409   verifyFormat("if () {\n"
4410                "} else if (aaaaa &&\n"
4411                "           bbbbb > // break\n"
4412                "               ccccc &&\n"
4413                "           ddddd) {\n"
4414                "}");
4415 
4416   // Presence of a trailing comment used to change indentation of b.
4417   verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n"
4418                "       b;\n"
4419                "return aaaaaaaaaaaaaaaaaaa +\n"
4420                "       b; //",
4421                getLLVMStyleWithColumns(30));
4422 }
4423 
4424 TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) {
4425   // Not sure what the best system is here. Like this, the LHS can be found
4426   // immediately above an operator (everything with the same or a higher
4427   // indent). The RHS is aligned right of the operator and so compasses
4428   // everything until something with the same indent as the operator is found.
4429   // FIXME: Is this a good system?
4430   FormatStyle Style = getLLVMStyle();
4431   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
4432   verifyFormat(
4433       "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4434       "                     + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4435       "                     + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4436       "                 == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4437       "                            * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4438       "                        + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4439       "             && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4440       "                        * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4441       "                    > ccccccccccccccccccccccccccccccccccccccccc;",
4442       Style);
4443   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4444                "            * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4445                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4446                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
4447                Style);
4448   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4449                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4450                "              * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4451                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
4452                Style);
4453   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4454                "    == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4455                "               * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4456                "           + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
4457                Style);
4458   verifyFormat("if () {\n"
4459                "} else if (aaaaa\n"
4460                "           && bbbbb // break\n"
4461                "                  > ccccc) {\n"
4462                "}",
4463                Style);
4464   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4465                "       && bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
4466                Style);
4467   verifyFormat("return (a)\n"
4468                "       // comment\n"
4469                "       + b;",
4470                Style);
4471   verifyFormat(
4472       "int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4473       "                 * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4474       "             + cc;",
4475       Style);
4476 
4477   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4478                "    = aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
4479                Style);
4480 
4481   // Forced by comments.
4482   verifyFormat(
4483       "unsigned ContentSize =\n"
4484       "    sizeof(int16_t)   // DWARF ARange version number\n"
4485       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
4486       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
4487       "    + sizeof(int8_t); // Segment Size (in bytes)");
4488 
4489   verifyFormat("return boost::fusion::at_c<0>(iiii).second\n"
4490                "       == boost::fusion::at_c<1>(iiii).second;",
4491                Style);
4492 
4493   Style.ColumnLimit = 60;
4494   verifyFormat("zzzzzzzzzz\n"
4495                "    = bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4496                "      >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);",
4497                Style);
4498 
4499   Style.ColumnLimit = 80;
4500   Style.IndentWidth = 4;
4501   Style.TabWidth = 4;
4502   Style.UseTab = FormatStyle::UT_Always;
4503   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
4504   Style.AlignOperands = FormatStyle::OAS_DontAlign;
4505   EXPECT_EQ("return someVeryVeryLongConditionThatBarelyFitsOnALine\n"
4506             "\t&& (someOtherLongishConditionPart1\n"
4507             "\t\t|| someOtherEvenLongerNestedConditionPart2);",
4508             format("return someVeryVeryLongConditionThatBarelyFitsOnALine && "
4509                    "(someOtherLongishConditionPart1 || "
4510                    "someOtherEvenLongerNestedConditionPart2);",
4511                    Style));
4512 }
4513 
4514 TEST_F(FormatTest, ExpressionIndentationStrictAlign) {
4515   FormatStyle Style = getLLVMStyle();
4516   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
4517   Style.AlignOperands = FormatStyle::OAS_AlignAfterOperator;
4518 
4519   verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4520                "                   + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4521                "                   + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4522                "              == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4523                "                         * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4524                "                     + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4525                "          && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4526                "                     * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4527                "                 > ccccccccccccccccccccccccccccccccccccccccc;",
4528                Style);
4529   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4530                "            * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4531                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4532                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
4533                Style);
4534   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4535                "        + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4536                "              * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4537                "    == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
4538                Style);
4539   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4540                "    == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4541                "               * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4542                "           + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}",
4543                Style);
4544   verifyFormat("if () {\n"
4545                "} else if (aaaaa\n"
4546                "           && bbbbb // break\n"
4547                "                  > ccccc) {\n"
4548                "}",
4549                Style);
4550   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4551                "    && bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
4552                Style);
4553   verifyFormat("return (a)\n"
4554                "     // comment\n"
4555                "     + b;",
4556                Style);
4557   verifyFormat(
4558       "int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4559       "               * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4560       "           + cc;",
4561       Style);
4562   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
4563                "     : bbbbbbbbbbbbbbbb ? 2222222222222222\n"
4564                "                        : 3333333333333333;",
4565                Style);
4566   verifyFormat(
4567       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaa    ? bbbbbbbbbbbbbbbbbb\n"
4568       "                           : ccccccccccccccc ? dddddddddddddddddd\n"
4569       "                                             : eeeeeeeeeeeeeeeeee)\n"
4570       "     : bbbbbbbbbbbbbbbb ? 2222222222222222\n"
4571       "                        : 3333333333333333;",
4572       Style);
4573   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4574                "    = aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
4575                Style);
4576 
4577   verifyFormat("return boost::fusion::at_c<0>(iiii).second\n"
4578                "    == boost::fusion::at_c<1>(iiii).second;",
4579                Style);
4580 
4581   Style.ColumnLimit = 60;
4582   verifyFormat("zzzzzzzzzzzzz\n"
4583                "    = bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4584                "   >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);",
4585                Style);
4586 
4587   // Forced by comments.
4588   Style.ColumnLimit = 80;
4589   verifyFormat(
4590       "unsigned ContentSize\n"
4591       "    = sizeof(int16_t) // DWARF ARange version number\n"
4592       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
4593       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
4594       "    + sizeof(int8_t); // Segment Size (in bytes)",
4595       Style);
4596 
4597   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
4598   verifyFormat(
4599       "unsigned ContentSize =\n"
4600       "    sizeof(int16_t)   // DWARF ARange version number\n"
4601       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
4602       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
4603       "    + sizeof(int8_t); // Segment Size (in bytes)",
4604       Style);
4605 
4606   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
4607   verifyFormat(
4608       "unsigned ContentSize =\n"
4609       "    sizeof(int16_t)   // DWARF ARange version number\n"
4610       "    + sizeof(int32_t) // Offset of CU in the .debug_info section\n"
4611       "    + sizeof(int8_t)  // Pointer Size (in bytes)\n"
4612       "    + sizeof(int8_t); // Segment Size (in bytes)",
4613       Style);
4614 }
4615 
4616 TEST_F(FormatTest, EnforcedOperatorWraps) {
4617   // Here we'd like to wrap after the || operators, but a comment is forcing an
4618   // earlier wrap.
4619   verifyFormat("bool x = aaaaa //\n"
4620                "         || bbbbb\n"
4621                "         //\n"
4622                "         || cccc;");
4623 }
4624 
4625 TEST_F(FormatTest, NoOperandAlignment) {
4626   FormatStyle Style = getLLVMStyle();
4627   Style.AlignOperands = FormatStyle::OAS_DontAlign;
4628   verifyFormat("aaaaaaaaaaaaaa(aaaaaaaaaaaa,\n"
4629                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
4630                "                   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
4631                Style);
4632   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
4633   verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4634                "            + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4635                "            + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4636                "        == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4637                "                * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4638                "            + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4639                "    && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4640                "            * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4641                "        > ccccccccccccccccccccccccccccccccccccccccc;",
4642                Style);
4643 
4644   verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4645                "        * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4646                "    + cc;",
4647                Style);
4648   verifyFormat("int a = aa\n"
4649                "    + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n"
4650                "        * cccccccccccccccccccccccccccccccccccc;\n",
4651                Style);
4652 
4653   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
4654   verifyFormat("return (a > b\n"
4655                "    // comment1\n"
4656                "    // comment2\n"
4657                "    || c);",
4658                Style);
4659 }
4660 
4661 TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) {
4662   FormatStyle Style = getLLVMStyle();
4663   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
4664   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
4665                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
4666                "    + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
4667                Style);
4668 }
4669 
4670 TEST_F(FormatTest, AllowBinPackingInsideArguments) {
4671   FormatStyle Style = getLLVMStyle();
4672   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment;
4673   Style.BinPackArguments = false;
4674   Style.ColumnLimit = 40;
4675   verifyFormat("void test() {\n"
4676                "  someFunction(\n"
4677                "      this + argument + is + quite\n"
4678                "      + long + so + it + gets + wrapped\n"
4679                "      + but + remains + bin - packed);\n"
4680                "}",
4681                Style);
4682   verifyFormat("void test() {\n"
4683                "  someFunction(arg1,\n"
4684                "               this + argument + is\n"
4685                "                   + quite + long + so\n"
4686                "                   + it + gets + wrapped\n"
4687                "                   + but + remains + bin\n"
4688                "                   - packed,\n"
4689                "               arg3);\n"
4690                "}",
4691                Style);
4692   verifyFormat("void test() {\n"
4693                "  someFunction(\n"
4694                "      arg1,\n"
4695                "      this + argument + has\n"
4696                "          + anotherFunc(nested,\n"
4697                "                        calls + whose\n"
4698                "                            + arguments\n"
4699                "                            + are + also\n"
4700                "                            + wrapped,\n"
4701                "                        in + addition)\n"
4702                "          + to + being + bin - packed,\n"
4703                "      arg3);\n"
4704                "}",
4705                Style);
4706 
4707   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
4708   verifyFormat("void test() {\n"
4709                "  someFunction(\n"
4710                "      arg1,\n"
4711                "      this + argument + has +\n"
4712                "          anotherFunc(nested,\n"
4713                "                      calls + whose +\n"
4714                "                          arguments +\n"
4715                "                          are + also +\n"
4716                "                          wrapped,\n"
4717                "                      in + addition) +\n"
4718                "          to + being + bin - packed,\n"
4719                "      arg3);\n"
4720                "}",
4721                Style);
4722 }
4723 
4724 TEST_F(FormatTest, ConstructorInitializers) {
4725   verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
4726   verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}",
4727                getLLVMStyleWithColumns(45));
4728   verifyFormat("Constructor()\n"
4729                "    : Inttializer(FitsOnTheLine) {}",
4730                getLLVMStyleWithColumns(44));
4731   verifyFormat("Constructor()\n"
4732                "    : Inttializer(FitsOnTheLine) {}",
4733                getLLVMStyleWithColumns(43));
4734 
4735   verifyFormat("template <typename T>\n"
4736                "Constructor() : Initializer(FitsOnTheLine) {}",
4737                getLLVMStyleWithColumns(45));
4738 
4739   verifyFormat(
4740       "SomeClass::Constructor()\n"
4741       "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
4742 
4743   verifyFormat(
4744       "SomeClass::Constructor()\n"
4745       "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
4746       "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}");
4747   verifyFormat(
4748       "SomeClass::Constructor()\n"
4749       "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
4750       "      aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
4751   verifyFormat("Constructor(aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
4752                "            aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
4753                "    : aaaaaaaaaa(aaaaaa) {}");
4754 
4755   verifyFormat("Constructor()\n"
4756                "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
4757                "      aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
4758                "                               aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
4759                "      aaaaaaaaaaaaaaaaaaaaaaa() {}");
4760 
4761   verifyFormat("Constructor()\n"
4762                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
4763                "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
4764 
4765   verifyFormat("Constructor(int Parameter = 0)\n"
4766                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
4767                "      aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}");
4768   verifyFormat("Constructor()\n"
4769                "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n"
4770                "}",
4771                getLLVMStyleWithColumns(60));
4772   verifyFormat("Constructor()\n"
4773                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
4774                "          aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}");
4775 
4776   // Here a line could be saved by splitting the second initializer onto two
4777   // lines, but that is not desirable.
4778   verifyFormat("Constructor()\n"
4779                "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
4780                "      aaaaaaaaaaa(aaaaaaaaaaa),\n"
4781                "      aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
4782 
4783   FormatStyle OnePerLine = getLLVMStyle();
4784   OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
4785   OnePerLine.AllowAllParametersOfDeclarationOnNextLine = false;
4786   verifyFormat("SomeClass::Constructor()\n"
4787                "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
4788                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
4789                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
4790                OnePerLine);
4791   verifyFormat("SomeClass::Constructor()\n"
4792                "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
4793                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
4794                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
4795                OnePerLine);
4796   verifyFormat("MyClass::MyClass(int var)\n"
4797                "    : some_var_(var),            // 4 space indent\n"
4798                "      some_other_var_(var + 1) { // lined up\n"
4799                "}",
4800                OnePerLine);
4801   verifyFormat("Constructor()\n"
4802                "    : aaaaa(aaaaaa),\n"
4803                "      aaaaa(aaaaaa),\n"
4804                "      aaaaa(aaaaaa),\n"
4805                "      aaaaa(aaaaaa),\n"
4806                "      aaaaa(aaaaaa) {}",
4807                OnePerLine);
4808   verifyFormat("Constructor()\n"
4809                "    : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n"
4810                "            aaaaaaaaaaaaaaaaaaaaaa) {}",
4811                OnePerLine);
4812   OnePerLine.BinPackParameters = false;
4813   verifyFormat(
4814       "Constructor()\n"
4815       "    : aaaaaaaaaaaaaaaaaaaaaaaa(\n"
4816       "          aaaaaaaaaaa().aaa(),\n"
4817       "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
4818       OnePerLine);
4819   OnePerLine.ColumnLimit = 60;
4820   verifyFormat("Constructor()\n"
4821                "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
4822                "      bbbbbbbbbbbbbbbbbbbbbbbb(b) {}",
4823                OnePerLine);
4824 
4825   EXPECT_EQ("Constructor()\n"
4826             "    : // Comment forcing unwanted break.\n"
4827             "      aaaa(aaaa) {}",
4828             format("Constructor() :\n"
4829                    "    // Comment forcing unwanted break.\n"
4830                    "    aaaa(aaaa) {}"));
4831 }
4832 
4833 TEST_F(FormatTest, AllowAllConstructorInitializersOnNextLine) {
4834   FormatStyle Style = getLLVMStyle();
4835   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
4836   Style.ColumnLimit = 60;
4837   Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
4838   Style.AllowAllConstructorInitializersOnNextLine = true;
4839   Style.BinPackParameters = false;
4840 
4841   for (int i = 0; i < 4; ++i) {
4842     // Test all combinations of parameters that should not have an effect.
4843     Style.AllowAllParametersOfDeclarationOnNextLine = i & 1;
4844     Style.AllowAllArgumentsOnNextLine = i & 2;
4845 
4846     Style.AllowAllConstructorInitializersOnNextLine = true;
4847     Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
4848     verifyFormat("Constructor()\n"
4849                  "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
4850                  Style);
4851     verifyFormat("Constructor() : a(a), b(b) {}", Style);
4852 
4853     Style.AllowAllConstructorInitializersOnNextLine = false;
4854     verifyFormat("Constructor()\n"
4855                  "    : aaaaaaaaaaaaaaaaaaaa(a)\n"
4856                  "    , bbbbbbbbbbbbbbbbbbbbb(b) {}",
4857                  Style);
4858     verifyFormat("Constructor() : a(a), b(b) {}", Style);
4859 
4860     Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
4861     Style.AllowAllConstructorInitializersOnNextLine = true;
4862     verifyFormat("Constructor()\n"
4863                  "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
4864                  Style);
4865 
4866     Style.AllowAllConstructorInitializersOnNextLine = false;
4867     verifyFormat("Constructor()\n"
4868                  "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
4869                  "      bbbbbbbbbbbbbbbbbbbbb(b) {}",
4870                  Style);
4871 
4872     Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
4873     Style.AllowAllConstructorInitializersOnNextLine = true;
4874     verifyFormat("Constructor() :\n"
4875                  "    aaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
4876                  Style);
4877 
4878     Style.AllowAllConstructorInitializersOnNextLine = false;
4879     verifyFormat("Constructor() :\n"
4880                  "    aaaaaaaaaaaaaaaaaa(a),\n"
4881                  "    bbbbbbbbbbbbbbbbbbbbb(b) {}",
4882                  Style);
4883   }
4884 
4885   // Test interactions between AllowAllParametersOfDeclarationOnNextLine and
4886   // AllowAllConstructorInitializersOnNextLine in all
4887   // BreakConstructorInitializers modes
4888   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
4889   Style.AllowAllParametersOfDeclarationOnNextLine = true;
4890   Style.AllowAllConstructorInitializersOnNextLine = false;
4891   verifyFormat("SomeClassWithALongName::Constructor(\n"
4892                "    int aaaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbbb)\n"
4893                "    : aaaaaaaaaaaaaaaaaaaa(a)\n"
4894                "    , bbbbbbbbbbbbbbbbbbbbb(b) {}",
4895                Style);
4896 
4897   Style.AllowAllConstructorInitializersOnNextLine = true;
4898   verifyFormat("SomeClassWithALongName::Constructor(\n"
4899                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
4900                "    int bbbbbbbbbbbbb,\n"
4901                "    int cccccccccccccccc)\n"
4902                "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
4903                Style);
4904 
4905   Style.AllowAllParametersOfDeclarationOnNextLine = false;
4906   Style.AllowAllConstructorInitializersOnNextLine = false;
4907   verifyFormat("SomeClassWithALongName::Constructor(\n"
4908                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
4909                "    int bbbbbbbbbbbbb)\n"
4910                "    : aaaaaaaaaaaaaaaaaaaa(a)\n"
4911                "    , bbbbbbbbbbbbbbbbbbbbb(b) {}",
4912                Style);
4913 
4914   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
4915 
4916   Style.AllowAllParametersOfDeclarationOnNextLine = true;
4917   verifyFormat("SomeClassWithALongName::Constructor(\n"
4918                "    int aaaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbbb)\n"
4919                "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
4920                "      bbbbbbbbbbbbbbbbbbbbb(b) {}",
4921                Style);
4922 
4923   Style.AllowAllConstructorInitializersOnNextLine = true;
4924   verifyFormat("SomeClassWithALongName::Constructor(\n"
4925                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
4926                "    int bbbbbbbbbbbbb,\n"
4927                "    int cccccccccccccccc)\n"
4928                "    : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
4929                Style);
4930 
4931   Style.AllowAllParametersOfDeclarationOnNextLine = false;
4932   Style.AllowAllConstructorInitializersOnNextLine = false;
4933   verifyFormat("SomeClassWithALongName::Constructor(\n"
4934                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
4935                "    int bbbbbbbbbbbbb)\n"
4936                "    : aaaaaaaaaaaaaaaaaaaa(a),\n"
4937                "      bbbbbbbbbbbbbbbbbbbbb(b) {}",
4938                Style);
4939 
4940   Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
4941   Style.AllowAllParametersOfDeclarationOnNextLine = true;
4942   verifyFormat("SomeClassWithALongName::Constructor(\n"
4943                "    int aaaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbbb) :\n"
4944                "    aaaaaaaaaaaaaaaaaaaa(a),\n"
4945                "    bbbbbbbbbbbbbbbbbbbbb(b) {}",
4946                Style);
4947 
4948   Style.AllowAllConstructorInitializersOnNextLine = true;
4949   verifyFormat("SomeClassWithALongName::Constructor(\n"
4950                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
4951                "    int bbbbbbbbbbbbb,\n"
4952                "    int cccccccccccccccc) :\n"
4953                "    aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbb(b) {}",
4954                Style);
4955 
4956   Style.AllowAllParametersOfDeclarationOnNextLine = false;
4957   Style.AllowAllConstructorInitializersOnNextLine = false;
4958   verifyFormat("SomeClassWithALongName::Constructor(\n"
4959                "    int aaaaaaaaaaaaaaaaaaaaaaaa,\n"
4960                "    int bbbbbbbbbbbbb) :\n"
4961                "    aaaaaaaaaaaaaaaaaaaa(a),\n"
4962                "    bbbbbbbbbbbbbbbbbbbbb(b) {}",
4963                Style);
4964 }
4965 
4966 TEST_F(FormatTest, AllowAllArgumentsOnNextLine) {
4967   FormatStyle Style = getLLVMStyle();
4968   Style.ColumnLimit = 60;
4969   Style.BinPackArguments = false;
4970   for (int i = 0; i < 4; ++i) {
4971     // Test all combinations of parameters that should not have an effect.
4972     Style.AllowAllParametersOfDeclarationOnNextLine = i & 1;
4973     Style.AllowAllConstructorInitializersOnNextLine = i & 2;
4974 
4975     Style.AllowAllArgumentsOnNextLine = true;
4976     verifyFormat("void foo() {\n"
4977                  "  FunctionCallWithReallyLongName(\n"
4978                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbb);\n"
4979                  "}",
4980                  Style);
4981     Style.AllowAllArgumentsOnNextLine = false;
4982     verifyFormat("void foo() {\n"
4983                  "  FunctionCallWithReallyLongName(\n"
4984                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
4985                  "      bbbbbbbbbbbb);\n"
4986                  "}",
4987                  Style);
4988 
4989     Style.AllowAllArgumentsOnNextLine = true;
4990     verifyFormat("void foo() {\n"
4991                  "  auto VariableWithReallyLongName = {\n"
4992                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbb};\n"
4993                  "}",
4994                  Style);
4995     Style.AllowAllArgumentsOnNextLine = false;
4996     verifyFormat("void foo() {\n"
4997                  "  auto VariableWithReallyLongName = {\n"
4998                  "      aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
4999                  "      bbbbbbbbbbbb};\n"
5000                  "}",
5001                  Style);
5002   }
5003 
5004   // This parameter should not affect declarations.
5005   Style.BinPackParameters = false;
5006   Style.AllowAllArgumentsOnNextLine = false;
5007   Style.AllowAllParametersOfDeclarationOnNextLine = true;
5008   verifyFormat("void FunctionCallWithReallyLongName(\n"
5009                "    int aaaaaaaaaaaaaaaaaaaaaaa, int bbbbbbbbbbbb);",
5010                Style);
5011   Style.AllowAllParametersOfDeclarationOnNextLine = false;
5012   verifyFormat("void FunctionCallWithReallyLongName(\n"
5013                "    int aaaaaaaaaaaaaaaaaaaaaaa,\n"
5014                "    int bbbbbbbbbbbb);",
5015                Style);
5016 }
5017 
5018 TEST_F(FormatTest, AllowAllArgumentsOnNextLineDontAlign) {
5019   // Check that AllowAllArgumentsOnNextLine is respected for both BAS_DontAlign
5020   // and BAS_Align.
5021   auto Style = getLLVMStyle();
5022   Style.ColumnLimit = 35;
5023   StringRef Input = "functionCall(paramA, paramB, paramC);\n"
5024                     "void functionDecl(int A, int B, int C);";
5025   Style.AllowAllArgumentsOnNextLine = false;
5026   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
5027   EXPECT_EQ(StringRef("functionCall(paramA, paramB,\n"
5028                       "    paramC);\n"
5029                       "void functionDecl(int A, int B,\n"
5030                       "    int C);"),
5031             format(Input, Style));
5032   Style.AlignAfterOpenBracket = FormatStyle::BAS_Align;
5033   EXPECT_EQ(StringRef("functionCall(paramA, paramB,\n"
5034                       "             paramC);\n"
5035                       "void functionDecl(int A, int B,\n"
5036                       "                  int C);"),
5037             format(Input, Style));
5038   // However, BAS_AlwaysBreak should take precedence over
5039   // AllowAllArgumentsOnNextLine.
5040   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
5041   EXPECT_EQ(StringRef("functionCall(\n"
5042                       "    paramA, paramB, paramC);\n"
5043                       "void functionDecl(\n"
5044                       "    int A, int B, int C);"),
5045             format(Input, Style));
5046 
5047   // When AllowAllArgumentsOnNextLine is set, we prefer breaking before the
5048   // first argument.
5049   Style.AllowAllArgumentsOnNextLine = true;
5050   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
5051   EXPECT_EQ(StringRef("functionCall(\n"
5052                       "    paramA, paramB, paramC);\n"
5053                       "void functionDecl(\n"
5054                       "    int A, int B, int C);"),
5055             format(Input, Style));
5056   // It wouldn't fit on one line with aligned parameters so this setting
5057   // doesn't change anything for BAS_Align.
5058   Style.AlignAfterOpenBracket = FormatStyle::BAS_Align;
5059   EXPECT_EQ(StringRef("functionCall(paramA, paramB,\n"
5060                       "             paramC);\n"
5061                       "void functionDecl(int A, int B,\n"
5062                       "                  int C);"),
5063             format(Input, Style));
5064   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
5065   EXPECT_EQ(StringRef("functionCall(\n"
5066                       "    paramA, paramB, paramC);\n"
5067                       "void functionDecl(\n"
5068                       "    int A, int B, int C);"),
5069             format(Input, Style));
5070 }
5071 
5072 TEST_F(FormatTest, BreakConstructorInitializersAfterColon) {
5073   FormatStyle Style = getLLVMStyle();
5074   Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
5075 
5076   verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
5077   verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}",
5078                getStyleWithColumns(Style, 45));
5079   verifyFormat("Constructor() :\n"
5080                "    Initializer(FitsOnTheLine) {}",
5081                getStyleWithColumns(Style, 44));
5082   verifyFormat("Constructor() :\n"
5083                "    Initializer(FitsOnTheLine) {}",
5084                getStyleWithColumns(Style, 43));
5085 
5086   verifyFormat("template <typename T>\n"
5087                "Constructor() : Initializer(FitsOnTheLine) {}",
5088                getStyleWithColumns(Style, 50));
5089   Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
5090   verifyFormat(
5091       "SomeClass::Constructor() :\n"
5092       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}",
5093       Style);
5094 
5095   Style.ConstructorInitializerAllOnOneLineOrOnePerLine = false;
5096   verifyFormat(
5097       "SomeClass::Constructor() :\n"
5098       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}",
5099       Style);
5100 
5101   verifyFormat(
5102       "SomeClass::Constructor() :\n"
5103       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
5104       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
5105       Style);
5106   verifyFormat(
5107       "SomeClass::Constructor() :\n"
5108       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
5109       "    aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}",
5110       Style);
5111   verifyFormat("Constructor(aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5112                "            aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
5113                "    aaaaaaaaaa(aaaaaa) {}",
5114                Style);
5115 
5116   verifyFormat("Constructor() :\n"
5117                "    aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
5118                "    aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5119                "                             aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
5120                "    aaaaaaaaaaaaaaaaaaaaaaa() {}",
5121                Style);
5122 
5123   verifyFormat("Constructor() :\n"
5124                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5125                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
5126                Style);
5127 
5128   verifyFormat("Constructor(int Parameter = 0) :\n"
5129                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
5130                "    aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}",
5131                Style);
5132   verifyFormat("Constructor() :\n"
5133                "    aaaaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n"
5134                "}",
5135                getStyleWithColumns(Style, 60));
5136   verifyFormat("Constructor() :\n"
5137                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5138                "        aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}",
5139                Style);
5140 
5141   // Here a line could be saved by splitting the second initializer onto two
5142   // lines, but that is not desirable.
5143   verifyFormat("Constructor() :\n"
5144                "    aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
5145                "    aaaaaaaaaaa(aaaaaaaaaaa),\n"
5146                "    aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
5147                Style);
5148 
5149   FormatStyle OnePerLine = Style;
5150   OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
5151   OnePerLine.AllowAllConstructorInitializersOnNextLine = false;
5152   verifyFormat("SomeClass::Constructor() :\n"
5153                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
5154                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
5155                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
5156                OnePerLine);
5157   verifyFormat("SomeClass::Constructor() :\n"
5158                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
5159                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
5160                "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
5161                OnePerLine);
5162   verifyFormat("MyClass::MyClass(int var) :\n"
5163                "    some_var_(var),            // 4 space indent\n"
5164                "    some_other_var_(var + 1) { // lined up\n"
5165                "}",
5166                OnePerLine);
5167   verifyFormat("Constructor() :\n"
5168                "    aaaaa(aaaaaa),\n"
5169                "    aaaaa(aaaaaa),\n"
5170                "    aaaaa(aaaaaa),\n"
5171                "    aaaaa(aaaaaa),\n"
5172                "    aaaaa(aaaaaa) {}",
5173                OnePerLine);
5174   verifyFormat("Constructor() :\n"
5175                "    aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n"
5176                "          aaaaaaaaaaaaaaaaaaaaaa) {}",
5177                OnePerLine);
5178   OnePerLine.BinPackParameters = false;
5179   verifyFormat("Constructor() :\n"
5180                "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
5181                "        aaaaaaaaaaa().aaa(),\n"
5182                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
5183                OnePerLine);
5184   OnePerLine.ColumnLimit = 60;
5185   verifyFormat("Constructor() :\n"
5186                "    aaaaaaaaaaaaaaaaaaaa(a),\n"
5187                "    bbbbbbbbbbbbbbbbbbbbbbbb(b) {}",
5188                OnePerLine);
5189 
5190   EXPECT_EQ("Constructor() :\n"
5191             "    // Comment forcing unwanted break.\n"
5192             "    aaaa(aaaa) {}",
5193             format("Constructor() :\n"
5194                    "    // Comment forcing unwanted break.\n"
5195                    "    aaaa(aaaa) {}",
5196                    Style));
5197 
5198   Style.ColumnLimit = 0;
5199   verifyFormat("SomeClass::Constructor() :\n"
5200                "    a(a) {}",
5201                Style);
5202   verifyFormat("SomeClass::Constructor() noexcept :\n"
5203                "    a(a) {}",
5204                Style);
5205   verifyFormat("SomeClass::Constructor() :\n"
5206                "    a(a), b(b), c(c) {}",
5207                Style);
5208   verifyFormat("SomeClass::Constructor() :\n"
5209                "    a(a) {\n"
5210                "  foo();\n"
5211                "  bar();\n"
5212                "}",
5213                Style);
5214 
5215   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
5216   verifyFormat("SomeClass::Constructor() :\n"
5217                "    a(a), b(b), c(c) {\n"
5218                "}",
5219                Style);
5220   verifyFormat("SomeClass::Constructor() :\n"
5221                "    a(a) {\n"
5222                "}",
5223                Style);
5224 
5225   Style.ColumnLimit = 80;
5226   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
5227   Style.ConstructorInitializerIndentWidth = 2;
5228   verifyFormat("SomeClass::Constructor() : a(a), b(b), c(c) {}", Style);
5229   verifyFormat("SomeClass::Constructor() :\n"
5230                "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5231                "  bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}",
5232                Style);
5233 
5234   // `ConstructorInitializerIndentWidth` actually applies to InheritanceList as
5235   // well
5236   Style.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
5237   verifyFormat(
5238       "class SomeClass\n"
5239       "  : public aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5240       "    public bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {};",
5241       Style);
5242   Style.BreakInheritanceList = FormatStyle::BILS_BeforeComma;
5243   verifyFormat(
5244       "class SomeClass\n"
5245       "  : public aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5246       "  , public bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {};",
5247       Style);
5248   Style.BreakInheritanceList = FormatStyle::BILS_AfterColon;
5249   verifyFormat(
5250       "class SomeClass :\n"
5251       "  public aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5252       "  public bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {};",
5253       Style);
5254 }
5255 
5256 #ifndef EXPENSIVE_CHECKS
5257 // Expensive checks enables libstdc++ checking which includes validating the
5258 // state of ranges used in std::priority_queue - this blows out the
5259 // runtime/scalability of the function and makes this test unacceptably slow.
5260 TEST_F(FormatTest, MemoizationTests) {
5261   // This breaks if the memoization lookup does not take \c Indent and
5262   // \c LastSpace into account.
5263   verifyFormat(
5264       "extern CFRunLoopTimerRef\n"
5265       "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n"
5266       "                     CFTimeInterval interval, CFOptionFlags flags,\n"
5267       "                     CFIndex order, CFRunLoopTimerCallBack callout,\n"
5268       "                     CFRunLoopTimerContext *context) {}");
5269 
5270   // Deep nesting somewhat works around our memoization.
5271   verifyFormat(
5272       "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
5273       "    aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
5274       "        aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
5275       "            aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
5276       "                aaaaa())))))))))))))))))))))))))))))))))))))));",
5277       getLLVMStyleWithColumns(65));
5278   verifyFormat(
5279       "aaaaa(\n"
5280       "    aaaaa,\n"
5281       "    aaaaa(\n"
5282       "        aaaaa,\n"
5283       "        aaaaa(\n"
5284       "            aaaaa,\n"
5285       "            aaaaa(\n"
5286       "                aaaaa,\n"
5287       "                aaaaa(\n"
5288       "                    aaaaa,\n"
5289       "                    aaaaa(\n"
5290       "                        aaaaa,\n"
5291       "                        aaaaa(\n"
5292       "                            aaaaa,\n"
5293       "                            aaaaa(\n"
5294       "                                aaaaa,\n"
5295       "                                aaaaa(\n"
5296       "                                    aaaaa,\n"
5297       "                                    aaaaa(\n"
5298       "                                        aaaaa,\n"
5299       "                                        aaaaa(\n"
5300       "                                            aaaaa,\n"
5301       "                                            aaaaa(\n"
5302       "                                                aaaaa,\n"
5303       "                                                aaaaa))))))))))));",
5304       getLLVMStyleWithColumns(65));
5305   verifyFormat(
5306       "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"
5307       "                                  a),\n"
5308       "                                a),\n"
5309       "                              a),\n"
5310       "                            a),\n"
5311       "                          a),\n"
5312       "                        a),\n"
5313       "                      a),\n"
5314       "                    a),\n"
5315       "                  a),\n"
5316       "                a),\n"
5317       "              a),\n"
5318       "            a),\n"
5319       "          a),\n"
5320       "        a),\n"
5321       "      a),\n"
5322       "    a),\n"
5323       "  a)",
5324       getLLVMStyleWithColumns(65));
5325 
5326   // This test takes VERY long when memoization is broken.
5327   FormatStyle OnePerLine = getLLVMStyle();
5328   OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
5329   OnePerLine.BinPackParameters = false;
5330   std::string input = "Constructor()\n"
5331                       "    : aaaa(a,\n";
5332   for (unsigned i = 0, e = 80; i != e; ++i) {
5333     input += "           a,\n";
5334   }
5335   input += "           a) {}";
5336   verifyFormat(input, OnePerLine);
5337 }
5338 #endif
5339 
5340 TEST_F(FormatTest, BreaksAsHighAsPossible) {
5341   verifyFormat(
5342       "void f() {\n"
5343       "  if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
5344       "      (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
5345       "    f();\n"
5346       "}");
5347   verifyFormat("if (Intervals[i].getRange().getFirst() <\n"
5348                "    Intervals[i - 1].getRange().getLast()) {\n}");
5349 }
5350 
5351 TEST_F(FormatTest, BreaksFunctionDeclarations) {
5352   // Principially, we break function declarations in a certain order:
5353   // 1) break amongst arguments.
5354   verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n"
5355                "                              Cccccccccccccc cccccccccccccc);");
5356   verifyFormat("template <class TemplateIt>\n"
5357                "SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n"
5358                "                            TemplateIt *stop) {}");
5359 
5360   // 2) break after return type.
5361   verifyFormat(
5362       "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5363       "bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);",
5364       getGoogleStyle());
5365 
5366   // 3) break after (.
5367   verifyFormat(
5368       "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n"
5369       "    Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);",
5370       getGoogleStyle());
5371 
5372   // 4) break before after nested name specifiers.
5373   verifyFormat(
5374       "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5375       "SomeClasssssssssssssssssssssssssssssssssssssss::\n"
5376       "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);",
5377       getGoogleStyle());
5378 
5379   // However, there are exceptions, if a sufficient amount of lines can be
5380   // saved.
5381   // FIXME: The precise cut-offs wrt. the number of saved lines might need some
5382   // more adjusting.
5383   verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
5384                "                                  Cccccccccccccc cccccccccc,\n"
5385                "                                  Cccccccccccccc cccccccccc,\n"
5386                "                                  Cccccccccccccc cccccccccc,\n"
5387                "                                  Cccccccccccccc cccccccccc);");
5388   verifyFormat(
5389       "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5390       "bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
5391       "            Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
5392       "            Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);",
5393       getGoogleStyle());
5394   verifyFormat(
5395       "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
5396       "                                          Cccccccccccccc cccccccccc,\n"
5397       "                                          Cccccccccccccc cccccccccc,\n"
5398       "                                          Cccccccccccccc cccccccccc,\n"
5399       "                                          Cccccccccccccc cccccccccc,\n"
5400       "                                          Cccccccccccccc cccccccccc,\n"
5401       "                                          Cccccccccccccc cccccccccc);");
5402   verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
5403                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
5404                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
5405                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
5406                "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);");
5407 
5408   // Break after multi-line parameters.
5409   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5410                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5411                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5412                "    bbbb bbbb);");
5413   verifyFormat("void SomeLoooooooooooongFunction(\n"
5414                "    std::unique_ptr<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n"
5415                "        aaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5416                "    int bbbbbbbbbbbbb);");
5417 
5418   // Treat overloaded operators like other functions.
5419   verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
5420                "operator>(const SomeLoooooooooooooooooooooooooogType &other);");
5421   verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
5422                "operator>>(const SomeLooooooooooooooooooooooooogType &other);");
5423   verifyFormat("SomeLoooooooooooooooooooooooooogType\n"
5424                "operator<<(const SomeLooooooooooooooooooooooooogType &other);");
5425   verifyGoogleFormat(
5426       "SomeLoooooooooooooooooooooooooooooogType operator>>(\n"
5427       "    const SomeLooooooooogType &a, const SomeLooooooooogType &b);");
5428   verifyGoogleFormat(
5429       "SomeLoooooooooooooooooooooooooooooogType operator<<(\n"
5430       "    const SomeLooooooooogType &a, const SomeLooooooooogType &b);");
5431   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5432                "    int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);");
5433   verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n"
5434                "aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);");
5435   verifyGoogleFormat(
5436       "typename aaaaaaaaaa<aaaaaa>::aaaaaaaaaaa\n"
5437       "aaaaaaaaaa<aaaaaa>::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5438       "    bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}");
5439   verifyGoogleFormat("template <typename T>\n"
5440                      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5441                      "aaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaaaaa(\n"
5442                      "    aaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaa);");
5443 
5444   FormatStyle Style = getLLVMStyle();
5445   Style.PointerAlignment = FormatStyle::PAS_Left;
5446   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5447                "    aaaaaaaaaaaaaaaaaaaaaaaaa* const aaaaaaaaaaaa) {}",
5448                Style);
5449   verifyFormat("void aaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*\n"
5450                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
5451                Style);
5452 }
5453 
5454 TEST_F(FormatTest, DontBreakBeforeQualifiedOperator) {
5455   // Regression test for https://bugs.llvm.org/show_bug.cgi?id=40516:
5456   // Prefer keeping `::` followed by `operator` together.
5457   EXPECT_EQ("const aaaa::bbbbbbb &\n"
5458             "ccccccccc::operator++() {\n"
5459             "  stuff();\n"
5460             "}",
5461             format("const aaaa::bbbbbbb\n"
5462                    "&ccccccccc::operator++() { stuff(); }",
5463                    getLLVMStyleWithColumns(40)));
5464 }
5465 
5466 TEST_F(FormatTest, TrailingReturnType) {
5467   verifyFormat("auto foo() -> int;\n");
5468   // correct trailing return type spacing
5469   verifyFormat("auto operator->() -> int;\n");
5470   verifyFormat("auto operator++(int) -> int;\n");
5471 
5472   verifyFormat("struct S {\n"
5473                "  auto bar() const -> int;\n"
5474                "};");
5475   verifyFormat("template <size_t Order, typename T>\n"
5476                "auto load_img(const std::string &filename)\n"
5477                "    -> alias::tensor<Order, T, mem::tag::cpu> {}");
5478   verifyFormat("auto SomeFunction(A aaaaaaaaaaaaaaaaaaaaa) const\n"
5479                "    -> decltype(f(aaaaaaaaaaaaaaaaaaaaa)) {}");
5480   verifyFormat("auto doSomething(Aaaaaa *aaaaaa) -> decltype(aaaaaa->f()) {}");
5481   verifyFormat("template <typename T>\n"
5482                "auto aaaaaaaaaaaaaaaaaaaaaa(T t)\n"
5483                "    -> decltype(eaaaaaaaaaaaaaaa<T>(t.a).aaaaaaaa());");
5484 
5485   // Not trailing return types.
5486   verifyFormat("void f() { auto a = b->c(); }");
5487 }
5488 
5489 TEST_F(FormatTest, DeductionGuides) {
5490   verifyFormat("template <class T> A(const T &, const T &) -> A<T &>;");
5491   verifyFormat("template <class T> explicit A(T &, T &&) -> A<T>;");
5492   verifyFormat("template <class... Ts> S(Ts...) -> S<Ts...>;");
5493   verifyFormat(
5494       "template <class... T>\n"
5495       "array(T &&...t) -> array<std::common_type_t<T...>, sizeof...(T)>;");
5496   verifyFormat("template <class T> A() -> A<decltype(p->foo<3>())>;");
5497   verifyFormat("template <class T> A() -> A<decltype(foo<traits<1>>)>;");
5498   verifyFormat("template <class T> A() -> A<sizeof(p->foo<1>)>;");
5499   verifyFormat("template <class T> A() -> A<(3 < 2)>;");
5500   verifyFormat("template <class T> A() -> A<((3) < (2))>;");
5501   verifyFormat("template <class T> x() -> x<1>;");
5502   verifyFormat("template <class T> explicit x(T &) -> x<1>;");
5503 
5504   // Ensure not deduction guides.
5505   verifyFormat("c()->f<int>();");
5506   verifyFormat("x()->foo<1>;");
5507   verifyFormat("x = p->foo<3>();");
5508   verifyFormat("x()->x<1>();");
5509   verifyFormat("x()->x<1>;");
5510 }
5511 
5512 TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) {
5513   // Avoid breaking before trailing 'const' or other trailing annotations, if
5514   // they are not function-like.
5515   FormatStyle Style = getGoogleStyle();
5516   Style.ColumnLimit = 47;
5517   verifyFormat("void someLongFunction(\n"
5518                "    int someLoooooooooooooongParameter) const {\n}",
5519                getLLVMStyleWithColumns(47));
5520   verifyFormat("LoooooongReturnType\n"
5521                "someLoooooooongFunction() const {}",
5522                getLLVMStyleWithColumns(47));
5523   verifyFormat("LoooooongReturnType someLoooooooongFunction()\n"
5524                "    const {}",
5525                Style);
5526   verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
5527                "                  aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;");
5528   verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
5529                "                  aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;");
5530   verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n"
5531                "                  aaaaa aaaaaaaaaaaaaaaaaaaa) override final;");
5532   verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n"
5533                "                   aaaaaaaaaaa aaaaa) const override;");
5534   verifyGoogleFormat(
5535       "virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5536       "    const override;");
5537 
5538   // Even if the first parameter has to be wrapped.
5539   verifyFormat("void someLongFunction(\n"
5540                "    int someLongParameter) const {}",
5541                getLLVMStyleWithColumns(46));
5542   verifyFormat("void someLongFunction(\n"
5543                "    int someLongParameter) const {}",
5544                Style);
5545   verifyFormat("void someLongFunction(\n"
5546                "    int someLongParameter) override {}",
5547                Style);
5548   verifyFormat("void someLongFunction(\n"
5549                "    int someLongParameter) OVERRIDE {}",
5550                Style);
5551   verifyFormat("void someLongFunction(\n"
5552                "    int someLongParameter) final {}",
5553                Style);
5554   verifyFormat("void someLongFunction(\n"
5555                "    int someLongParameter) FINAL {}",
5556                Style);
5557   verifyFormat("void someLongFunction(\n"
5558                "    int parameter) const override {}",
5559                Style);
5560 
5561   Style.BreakBeforeBraces = FormatStyle::BS_Allman;
5562   verifyFormat("void someLongFunction(\n"
5563                "    int someLongParameter) const\n"
5564                "{\n"
5565                "}",
5566                Style);
5567 
5568   Style.BreakBeforeBraces = FormatStyle::BS_Whitesmiths;
5569   verifyFormat("void someLongFunction(\n"
5570                "    int someLongParameter) const\n"
5571                "  {\n"
5572                "  }",
5573                Style);
5574 
5575   // Unless these are unknown annotations.
5576   verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n"
5577                "                  aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
5578                "    LONG_AND_UGLY_ANNOTATION;");
5579 
5580   // Breaking before function-like trailing annotations is fine to keep them
5581   // close to their arguments.
5582   verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
5583                "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
5584   verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
5585                "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
5586   verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
5587                "    LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}");
5588   verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n"
5589                      "    AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);");
5590   verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});");
5591 
5592   verifyFormat(
5593       "void aaaaaaaaaaaaaaaaaa()\n"
5594       "    __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n"
5595       "                   aaaaaaaaaaaaaaaaaaaaaaaaa));");
5596   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5597                "    __attribute__((unused));");
5598   verifyGoogleFormat(
5599       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5600       "    GUARDED_BY(aaaaaaaaaaaa);");
5601   verifyGoogleFormat(
5602       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5603       "    GUARDED_BY(aaaaaaaaaaaa);");
5604   verifyGoogleFormat(
5605       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n"
5606       "    aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
5607   verifyGoogleFormat(
5608       "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n"
5609       "    aaaaaaaaaaaaaaaaaaaaaaaaa;");
5610 }
5611 
5612 TEST_F(FormatTest, FunctionAnnotations) {
5613   verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n"
5614                "int OldFunction(const string &parameter) {}");
5615   verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n"
5616                "string OldFunction(const string &parameter) {}");
5617   verifyFormat("template <typename T>\n"
5618                "DEPRECATED(\"Use NewClass::NewFunction instead.\")\n"
5619                "string OldFunction(const string &parameter) {}");
5620 
5621   // Not function annotations.
5622   verifyFormat("ASSERT(\"aaaaa\") << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
5623                "                << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb");
5624   verifyFormat("TEST_F(ThisIsATestFixtureeeeeeeeeeeee,\n"
5625                "       ThisIsATestWithAReallyReallyReallyReallyLongName) {}");
5626   verifyFormat("MACRO(abc).function() // wrap\n"
5627                "    << abc;");
5628   verifyFormat("MACRO(abc)->function() // wrap\n"
5629                "    << abc;");
5630   verifyFormat("MACRO(abc)::function() // wrap\n"
5631                "    << abc;");
5632 }
5633 
5634 TEST_F(FormatTest, BreaksDesireably) {
5635   verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
5636                "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
5637                "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}");
5638   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5639                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
5640                "}");
5641 
5642   verifyFormat(
5643       "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5644       "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
5645 
5646   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5647                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5648                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
5649 
5650   verifyFormat(
5651       "aaaaaaaa(aaaaaaaaaaaaa,\n"
5652       "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5653       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
5654       "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5655       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
5656 
5657   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
5658                "    (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
5659 
5660   verifyFormat(
5661       "void f() {\n"
5662       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
5663       "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
5664       "}");
5665   verifyFormat(
5666       "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5667       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
5668   verifyFormat(
5669       "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5670       "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
5671   verifyFormat(
5672       "aaaaaa(aaa,\n"
5673       "       new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5674       "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
5675       "       aaaa);");
5676   verifyFormat("aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
5677                "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5678                "                  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
5679 
5680   // Indent consistently independent of call expression and unary operator.
5681   verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
5682                "    dddddddddddddddddddddddddddddd));");
5683   verifyFormat("aaaaaaaaaaa(!bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
5684                "    dddddddddddddddddddddddddddddd));");
5685   verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n"
5686                "    dddddddddddddddddddddddddddddd));");
5687 
5688   // This test case breaks on an incorrect memoization, i.e. an optimization not
5689   // taking into account the StopAt value.
5690   verifyFormat(
5691       "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
5692       "       aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
5693       "       aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
5694       "       (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
5695 
5696   verifyFormat("{\n  {\n    {\n"
5697                "      Annotation.SpaceRequiredBefore =\n"
5698                "          Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n"
5699                "          Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n"
5700                "    }\n  }\n}");
5701 
5702   // Break on an outer level if there was a break on an inner level.
5703   EXPECT_EQ("f(g(h(a, // comment\n"
5704             "      b, c),\n"
5705             "    d, e),\n"
5706             "  x, y);",
5707             format("f(g(h(a, // comment\n"
5708                    "    b, c), d, e), x, y);"));
5709 
5710   // Prefer breaking similar line breaks.
5711   verifyFormat(
5712       "const int kTrackingOptions = NSTrackingMouseMoved |\n"
5713       "                             NSTrackingMouseEnteredAndExited |\n"
5714       "                             NSTrackingActiveAlways;");
5715 }
5716 
5717 TEST_F(FormatTest, FormatsDeclarationsOnePerLine) {
5718   FormatStyle NoBinPacking = getGoogleStyle();
5719   NoBinPacking.BinPackParameters = false;
5720   NoBinPacking.BinPackArguments = true;
5721   verifyFormat("void f() {\n"
5722                "  f(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaa,\n"
5723                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
5724                "}",
5725                NoBinPacking);
5726   verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaa,\n"
5727                "       int aaaaaaaaaaaaaaaaaaaa,\n"
5728                "       int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
5729                NoBinPacking);
5730 
5731   NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
5732   verifyFormat("void aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5733                "                        vector<int> bbbbbbbbbbbbbbb);",
5734                NoBinPacking);
5735   // FIXME: This behavior difference is probably not wanted. However, currently
5736   // we cannot distinguish BreakBeforeParameter being set because of the wrapped
5737   // template arguments from BreakBeforeParameter being set because of the
5738   // one-per-line formatting.
5739   verifyFormat(
5740       "void fffffffffff(aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa,\n"
5741       "                                             aaaaaaaaaa> aaaaaaaaaa);",
5742       NoBinPacking);
5743   verifyFormat(
5744       "void fffffffffff(\n"
5745       "    aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaa>\n"
5746       "        aaaaaaaaaa);");
5747 }
5748 
5749 TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) {
5750   FormatStyle NoBinPacking = getGoogleStyle();
5751   NoBinPacking.BinPackParameters = false;
5752   NoBinPacking.BinPackArguments = false;
5753   verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n"
5754                "  aaaaaaaaaaaaaaaaaaaa,\n"
5755                "  aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);",
5756                NoBinPacking);
5757   verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n"
5758                "        aaaaaaaaaaaaa,\n"
5759                "        aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));",
5760                NoBinPacking);
5761   verifyFormat(
5762       "aaaaaaaa(aaaaaaaaaaaaa,\n"
5763       "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5764       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
5765       "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5766       "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));",
5767       NoBinPacking);
5768   verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
5769                "    .aaaaaaaaaaaaaaaaaa();",
5770                NoBinPacking);
5771   verifyFormat("void f() {\n"
5772                "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5773                "      aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n"
5774                "}",
5775                NoBinPacking);
5776 
5777   verifyFormat(
5778       "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
5779       "             aaaaaaaaaaaa,\n"
5780       "             aaaaaaaaaaaa);",
5781       NoBinPacking);
5782   verifyFormat(
5783       "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n"
5784       "                               ddddddddddddddddddddddddddddd),\n"
5785       "             test);",
5786       NoBinPacking);
5787 
5788   verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n"
5789                "            aaaaaaaaaaaaaaaaaaaaaaa,\n"
5790                "            aaaaaaaaaaaaaaaaaaaaaaa>\n"
5791                "    aaaaaaaaaaaaaaaaaa;",
5792                NoBinPacking);
5793   verifyFormat("a(\"a\"\n"
5794                "  \"a\",\n"
5795                "  a);");
5796 
5797   NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
5798   verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n"
5799                "                aaaaaaaaa,\n"
5800                "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
5801                NoBinPacking);
5802   verifyFormat(
5803       "void f() {\n"
5804       "  aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
5805       "      .aaaaaaa();\n"
5806       "}",
5807       NoBinPacking);
5808   verifyFormat(
5809       "template <class SomeType, class SomeOtherType>\n"
5810       "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}",
5811       NoBinPacking);
5812 }
5813 
5814 TEST_F(FormatTest, AdaptiveOnePerLineFormatting) {
5815   FormatStyle Style = getLLVMStyleWithColumns(15);
5816   Style.ExperimentalAutoDetectBinPacking = true;
5817   EXPECT_EQ("aaa(aaaa,\n"
5818             "    aaaa,\n"
5819             "    aaaa);\n"
5820             "aaa(aaaa,\n"
5821             "    aaaa,\n"
5822             "    aaaa);",
5823             format("aaa(aaaa,\n" // one-per-line
5824                    "  aaaa,\n"
5825                    "    aaaa  );\n"
5826                    "aaa(aaaa,  aaaa,  aaaa);", // inconclusive
5827                    Style));
5828   EXPECT_EQ("aaa(aaaa, aaaa,\n"
5829             "    aaaa);\n"
5830             "aaa(aaaa, aaaa,\n"
5831             "    aaaa);",
5832             format("aaa(aaaa,  aaaa,\n" // bin-packed
5833                    "    aaaa  );\n"
5834                    "aaa(aaaa,  aaaa,  aaaa);", // inconclusive
5835                    Style));
5836 }
5837 
5838 TEST_F(FormatTest, FormatsBuilderPattern) {
5839   verifyFormat("return llvm::StringSwitch<Reference::Kind>(name)\n"
5840                "    .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n"
5841                "    .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n"
5842                "    .StartsWith(\".init\", ORDER_INIT)\n"
5843                "    .StartsWith(\".fini\", ORDER_FINI)\n"
5844                "    .StartsWith(\".hash\", ORDER_HASH)\n"
5845                "    .Default(ORDER_TEXT);\n");
5846 
5847   verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n"
5848                "       aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();");
5849   verifyFormat("aaaaaaa->aaaaaaa\n"
5850                "    ->aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5851                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
5852                "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
5853   verifyFormat(
5854       "aaaaaaa->aaaaaaa\n"
5855       "    ->aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
5856       "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
5857   verifyFormat(
5858       "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n"
5859       "    aaaaaaaaaaaaaa);");
5860   verifyFormat(
5861       "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n"
5862       "    aaaaaa->aaaaaaaaaaaa()\n"
5863       "        ->aaaaaaaaaaaaaaaa(\n"
5864       "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
5865       "        ->aaaaaaaaaaaaaaaaa();");
5866   verifyGoogleFormat(
5867       "void f() {\n"
5868       "  someo->Add((new util::filetools::Handler(dir))\n"
5869       "                 ->OnEvent1(NewPermanentCallback(\n"
5870       "                     this, &HandlerHolderClass::EventHandlerCBA))\n"
5871       "                 ->OnEvent2(NewPermanentCallback(\n"
5872       "                     this, &HandlerHolderClass::EventHandlerCBB))\n"
5873       "                 ->OnEvent3(NewPermanentCallback(\n"
5874       "                     this, &HandlerHolderClass::EventHandlerCBC))\n"
5875       "                 ->OnEvent5(NewPermanentCallback(\n"
5876       "                     this, &HandlerHolderClass::EventHandlerCBD))\n"
5877       "                 ->OnEvent6(NewPermanentCallback(\n"
5878       "                     this, &HandlerHolderClass::EventHandlerCBE)));\n"
5879       "}");
5880 
5881   verifyFormat(
5882       "aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();");
5883   verifyFormat("aaaaaaaaaaaaaaa()\n"
5884                "    .aaaaaaaaaaaaaaa()\n"
5885                "    .aaaaaaaaaaaaaaa()\n"
5886                "    .aaaaaaaaaaaaaaa()\n"
5887                "    .aaaaaaaaaaaaaaa();");
5888   verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
5889                "    .aaaaaaaaaaaaaaa()\n"
5890                "    .aaaaaaaaaaaaaaa()\n"
5891                "    .aaaaaaaaaaaaaaa();");
5892   verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
5893                "    .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n"
5894                "    .aaaaaaaaaaaaaaa();");
5895   verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n"
5896                "    ->aaaaaaaaaaaaaae(0)\n"
5897                "    ->aaaaaaaaaaaaaaa();");
5898 
5899   // Don't linewrap after very short segments.
5900   verifyFormat("a().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5901                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5902                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
5903   verifyFormat("aa().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5904                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5905                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
5906   verifyFormat("aaa()\n"
5907                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5908                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5909                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
5910 
5911   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n"
5912                "    .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
5913                "    .has<bbbbbbbbbbbbbbbbbbbbb>();");
5914   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n"
5915                "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
5916                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();");
5917 
5918   // Prefer not to break after empty parentheses.
5919   verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n"
5920                "    First->LastNewlineOffset);");
5921 
5922   // Prefer not to create "hanging" indents.
5923   verifyFormat(
5924       "return !soooooooooooooome_map\n"
5925       "            .insert(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
5926       "            .second;");
5927   verifyFormat(
5928       "return aaaaaaaaaaaaaaaa\n"
5929       "    .aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa)\n"
5930       "    .aaaa(aaaaaaaaaaaaaa);");
5931   // No hanging indent here.
5932   verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa.aaaaaaaaaaaaaaa(\n"
5933                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
5934   verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa().aaaaaaaaaaaaaaa(\n"
5935                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
5936   verifyFormat("aaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n"
5937                "    .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
5938                getLLVMStyleWithColumns(60));
5939   verifyFormat("aaaaaaaaaaaaaaaaaa\n"
5940                "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n"
5941                "    .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
5942                getLLVMStyleWithColumns(59));
5943   verifyFormat("aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
5944                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
5945                "    .aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
5946 
5947   // Dont break if only closing statements before member call
5948   verifyFormat("test() {\n"
5949                "  ([]() -> {\n"
5950                "    int b = 32;\n"
5951                "    return 3;\n"
5952                "  }).foo();\n"
5953                "}");
5954   verifyFormat("test() {\n"
5955                "  (\n"
5956                "      []() -> {\n"
5957                "        int b = 32;\n"
5958                "        return 3;\n"
5959                "      },\n"
5960                "      foo, bar)\n"
5961                "      .foo();\n"
5962                "}");
5963   verifyFormat("test() {\n"
5964                "  ([]() -> {\n"
5965                "    int b = 32;\n"
5966                "    return 3;\n"
5967                "  })\n"
5968                "      .foo()\n"
5969                "      .bar();\n"
5970                "}");
5971   verifyFormat("test() {\n"
5972                "  ([]() -> {\n"
5973                "    int b = 32;\n"
5974                "    return 3;\n"
5975                "  })\n"
5976                "      .foo(\"aaaaaaaaaaaaaaaaa\"\n"
5977                "           \"bbbb\");\n"
5978                "}",
5979                getLLVMStyleWithColumns(30));
5980 }
5981 
5982 TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {
5983   verifyFormat(
5984       "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
5985       "    bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}");
5986   verifyFormat(
5987       "if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n"
5988       "    bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}");
5989 
5990   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
5991                "    ccccccccccccccccccccccccc) {\n}");
5992   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n"
5993                "    ccccccccccccccccccccccccc) {\n}");
5994 
5995   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
5996                "    ccccccccccccccccccccccccc) {\n}");
5997   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n"
5998                "    ccccccccccccccccccccccccc) {\n}");
5999 
6000   verifyFormat(
6001       "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n"
6002       "    ccccccccccccccccccccccccc) {\n}");
6003   verifyFormat(
6004       "if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n"
6005       "    ccccccccccccccccccccccccc) {\n}");
6006 
6007   verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n"
6008                "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n"
6009                "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n"
6010                "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
6011   verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n"
6012                "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n"
6013                "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n"
6014                "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
6015 
6016   verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n"
6017                "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n"
6018                "    aaaaaaaaaaaaaaa != aa) {\n}");
6019   verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n"
6020                "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n"
6021                "    aaaaaaaaaaaaaaa != aa) {\n}");
6022 }
6023 
6024 TEST_F(FormatTest, BreaksAfterAssignments) {
6025   verifyFormat(
6026       "unsigned Cost =\n"
6027       "    TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n"
6028       "                        SI->getPointerAddressSpaceee());\n");
6029   verifyFormat(
6030       "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n"
6031       "    Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());");
6032 
6033   verifyFormat(
6034       "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n"
6035       "    aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);");
6036   verifyFormat("unsigned OriginalStartColumn =\n"
6037                "    SourceMgr.getSpellingColumnNumber(\n"
6038                "        Current.FormatTok.getStartOfNonWhitespace()) -\n"
6039                "    1;");
6040 }
6041 
6042 TEST_F(FormatTest, ConfigurableBreakAssignmentPenalty) {
6043   FormatStyle Style = getLLVMStyle();
6044   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
6045                "    bbbbbbbbbbbbbbbbbbbbbbbbbb + cccccccccccccccccccccccccc;",
6046                Style);
6047 
6048   Style.PenaltyBreakAssignment = 20;
6049   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaa = bbbbbbbbbbbbbbbbbbbbbbbbbb +\n"
6050                "                                 cccccccccccccccccccccccccc;",
6051                Style);
6052 }
6053 
6054 TEST_F(FormatTest, AlignsAfterAssignments) {
6055   verifyFormat(
6056       "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6057       "             aaaaaaaaaaaaaaaaaaaaaaaaa;");
6058   verifyFormat(
6059       "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6060       "          aaaaaaaaaaaaaaaaaaaaaaaaa;");
6061   verifyFormat(
6062       "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6063       "           aaaaaaaaaaaaaaaaaaaaaaaaa;");
6064   verifyFormat(
6065       "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6066       "              aaaaaaaaaaaaaaaaaaaaaaaaa);");
6067   verifyFormat(
6068       "double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n"
6069       "                                            aaaaaaaaaaaaaaaaaaaaaaaa +\n"
6070       "                                            aaaaaaaaaaaaaaaaaaaaaaaa;");
6071 }
6072 
6073 TEST_F(FormatTest, AlignsAfterReturn) {
6074   verifyFormat(
6075       "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6076       "       aaaaaaaaaaaaaaaaaaaaaaaaa;");
6077   verifyFormat(
6078       "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6079       "        aaaaaaaaaaaaaaaaaaaaaaaaa);");
6080   verifyFormat(
6081       "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
6082       "       aaaaaaaaaaaaaaaaaaaaaa();");
6083   verifyFormat(
6084       "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
6085       "        aaaaaaaaaaaaaaaaaaaaaa());");
6086   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6087                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6088   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6089                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n"
6090                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
6091   verifyFormat("return\n"
6092                "    // true if code is one of a or b.\n"
6093                "    code == a || code == b;");
6094 }
6095 
6096 TEST_F(FormatTest, AlignsAfterOpenBracket) {
6097   verifyFormat(
6098       "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n"
6099       "                                                aaaaaaaaa aaaaaaa) {}");
6100   verifyFormat(
6101       "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n"
6102       "                                               aaaaaaaaaaa aaaaaaaaa);");
6103   verifyFormat(
6104       "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n"
6105       "                                             aaaaaaaaaaaaaaaaaaaaa));");
6106   FormatStyle Style = getLLVMStyle();
6107   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
6108   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6109                "    aaaaaaaaaaa aaaaaaaa, aaaaaaaaa aaaaaaa) {}",
6110                Style);
6111   verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n"
6112                "    aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaa aaaaaaaaa);",
6113                Style);
6114   verifyFormat("SomeLongVariableName->someFunction(\n"
6115                "    foooooooo(aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa));",
6116                Style);
6117   verifyFormat(
6118       "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n"
6119       "    aaaaaaaaa aaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
6120       Style);
6121   verifyFormat(
6122       "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n"
6123       "    aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6124       Style);
6125   verifyFormat(
6126       "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n"
6127       "    aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));",
6128       Style);
6129 
6130   verifyFormat("bbbbbbbbbbbb(aaaaaaaaaaaaaaaaaaaaaaaa, //\n"
6131                "    ccccccc(aaaaaaaaaaaaaaaaa,         //\n"
6132                "        b));",
6133                Style);
6134 
6135   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
6136   Style.BinPackArguments = false;
6137   Style.BinPackParameters = false;
6138   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6139                "    aaaaaaaaaaa aaaaaaaa,\n"
6140                "    aaaaaaaaa aaaaaaa,\n"
6141                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}",
6142                Style);
6143   verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n"
6144                "    aaaaaaaaaaa aaaaaaaaa,\n"
6145                "    aaaaaaaaaaa aaaaaaaaa,\n"
6146                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6147                Style);
6148   verifyFormat("SomeLongVariableName->someFunction(foooooooo(\n"
6149                "    aaaaaaaaaaaaaaa,\n"
6150                "    aaaaaaaaaaaaaaaaaaaaa,\n"
6151                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));",
6152                Style);
6153   verifyFormat(
6154       "aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa(\n"
6155       "    aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)));",
6156       Style);
6157   verifyFormat(
6158       "aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaa.aaaaaaaaaa(\n"
6159       "    aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)));",
6160       Style);
6161   verifyFormat(
6162       "aaaaaaaaaaaaaaaaaaaaaaaa(\n"
6163       "    aaaaaaaaaaaaaaaaaaaaa(\n"
6164       "        aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)),\n"
6165       "    aaaaaaaaaaaaaaaa);",
6166       Style);
6167   verifyFormat(
6168       "aaaaaaaaaaaaaaaaaaaaaaaa(\n"
6169       "    aaaaaaaaaaaaaaaaaaaaa(\n"
6170       "        aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)) &&\n"
6171       "    aaaaaaaaaaaaaaaa);",
6172       Style);
6173 }
6174 
6175 TEST_F(FormatTest, ParenthesesAndOperandAlignment) {
6176   FormatStyle Style = getLLVMStyleWithColumns(40);
6177   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
6178                "          bbbbbbbbbbbbbbbbbbbbbb);",
6179                Style);
6180   Style.AlignAfterOpenBracket = FormatStyle::BAS_Align;
6181   Style.AlignOperands = FormatStyle::OAS_DontAlign;
6182   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
6183                "          bbbbbbbbbbbbbbbbbbbbbb);",
6184                Style);
6185   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
6186   Style.AlignOperands = FormatStyle::OAS_Align;
6187   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
6188                "          bbbbbbbbbbbbbbbbbbbbbb);",
6189                Style);
6190   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
6191   Style.AlignOperands = FormatStyle::OAS_DontAlign;
6192   verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n"
6193                "    bbbbbbbbbbbbbbbbbbbbbb);",
6194                Style);
6195 }
6196 
6197 TEST_F(FormatTest, BreaksConditionalExpressions) {
6198   verifyFormat(
6199       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6200       "                               ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6201       "                               : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6202   verifyFormat(
6203       "aaaa(aaaaaaaaaa, aaaaaaaa,\n"
6204       "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6205       "                                : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6206   verifyFormat(
6207       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6208       "                                   : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6209   verifyFormat("aaaa(aaaaaaaaa, aaaaaaaaa,\n"
6210                "     aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6211                "             : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6212   verifyFormat(
6213       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n"
6214       "                                                    : aaaaaaaaaaaaa);");
6215   verifyFormat(
6216       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6217       "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6218       "                                    : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6219       "                   aaaaaaaaaaaaa);");
6220   verifyFormat(
6221       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6222       "                   aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6223       "                   aaaaaaaaaaaaa);");
6224   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6225                "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6226                "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
6227                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6228                "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6229   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6230                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6231                "           ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6232                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
6233                "           : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6234                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6235                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6236   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6237                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6238                "           ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6239                "                  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6240                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
6241   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6242                "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6243                "    : aaaaaaaaaaaaaaaaaaaaaaaaaaa;");
6244   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
6245                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6246                "        ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6247                "        : aaaaaaaaaaaaaaaa;");
6248   verifyFormat(
6249       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6250       "    ? aaaaaaaaaaaaaaa\n"
6251       "    : aaaaaaaaaaaaaaa;");
6252   verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
6253                "          aaaaaaaaa\n"
6254                "      ? b\n"
6255                "      : c);");
6256   verifyFormat("return aaaa == bbbb\n"
6257                "           // comment\n"
6258                "           ? aaaa\n"
6259                "           : bbbb;");
6260   verifyFormat("unsigned Indent =\n"
6261                "    format(TheLine.First,\n"
6262                "           IndentForLevel[TheLine.Level] >= 0\n"
6263                "               ? IndentForLevel[TheLine.Level]\n"
6264                "               : TheLine * 2,\n"
6265                "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
6266                getLLVMStyleWithColumns(60));
6267   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
6268                "                  ? aaaaaaaaaaaaaaa\n"
6269                "                  : bbbbbbbbbbbbbbb //\n"
6270                "                        ? ccccccccccccccc\n"
6271                "                        : ddddddddddddddd;");
6272   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
6273                "                  ? aaaaaaaaaaaaaaa\n"
6274                "                  : (bbbbbbbbbbbbbbb //\n"
6275                "                         ? ccccccccccccccc\n"
6276                "                         : ddddddddddddddd);");
6277   verifyFormat(
6278       "int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6279       "                                      ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
6280       "                                            aaaaaaaaaaaaaaaaaaaaa +\n"
6281       "                                            aaaaaaaaaaaaaaaaaaaaa\n"
6282       "                                      : aaaaaaaaaa;");
6283   verifyFormat(
6284       "aaaaaa = aaaaaaaaaaaa ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6285       "                                   : aaaaaaaaaaaaaaaaaaaaaa\n"
6286       "                      : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
6287 
6288   FormatStyle NoBinPacking = getLLVMStyle();
6289   NoBinPacking.BinPackArguments = false;
6290   verifyFormat(
6291       "void f() {\n"
6292       "  g(aaa,\n"
6293       "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
6294       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6295       "        ? aaaaaaaaaaaaaaa\n"
6296       "        : aaaaaaaaaaaaaaa);\n"
6297       "}",
6298       NoBinPacking);
6299   verifyFormat(
6300       "void f() {\n"
6301       "  g(aaa,\n"
6302       "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
6303       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6304       "        ?: aaaaaaaaaaaaaaa);\n"
6305       "}",
6306       NoBinPacking);
6307 
6308   verifyFormat("SomeFunction(aaaaaaaaaaaaaaaaa,\n"
6309                "             // comment.\n"
6310                "             ccccccccccccccccccccccccccccccccccccccc\n"
6311                "                 ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6312                "                 : bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);");
6313 
6314   // Assignments in conditional expressions. Apparently not uncommon :-(.
6315   verifyFormat("return a != b\n"
6316                "           // comment\n"
6317                "           ? a = b\n"
6318                "           : a = b;");
6319   verifyFormat("return a != b\n"
6320                "           // comment\n"
6321                "           ? a = a != b\n"
6322                "                     // comment\n"
6323                "                     ? a = b\n"
6324                "                     : a\n"
6325                "           : a;\n");
6326   verifyFormat("return a != b\n"
6327                "           // comment\n"
6328                "           ? a\n"
6329                "           : a = a != b\n"
6330                "                     // comment\n"
6331                "                     ? a = b\n"
6332                "                     : a;");
6333 
6334   // Chained conditionals
6335   FormatStyle Style = getLLVMStyle();
6336   Style.ColumnLimit = 70;
6337   Style.AlignOperands = FormatStyle::OAS_Align;
6338   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
6339                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6340                "                        : 3333333333333333;",
6341                Style);
6342   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
6343                "       : bbbbbbbbbb     ? 2222222222222222\n"
6344                "                        : 3333333333333333;",
6345                Style);
6346   verifyFormat("return aaaaaaaaaa         ? 1111111111111111\n"
6347                "       : bbbbbbbbbbbbbbbb ? 2222222222222222\n"
6348                "                          : 3333333333333333;",
6349                Style);
6350   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
6351                "       : bbbbbbbbbbbbbb ? 222222\n"
6352                "                        : 333333;",
6353                Style);
6354   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
6355                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6356                "       : cccccccccccccc ? 3333333333333333\n"
6357                "                        : 4444444444444444;",
6358                Style);
6359   verifyFormat("return aaaaaaaaaaaaaaaa ? (aaa ? bbb : ccc)\n"
6360                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6361                "                        : 3333333333333333;",
6362                Style);
6363   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
6364                "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6365                "                        : (aaa ? bbb : ccc);",
6366                Style);
6367   verifyFormat(
6368       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6369       "                                             : cccccccccccccccccc)\n"
6370       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6371       "                        : 3333333333333333;",
6372       Style);
6373   verifyFormat(
6374       "return aaaaaaaaa        ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6375       "                                             : cccccccccccccccccc)\n"
6376       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6377       "                        : 3333333333333333;",
6378       Style);
6379   verifyFormat(
6380       "return aaaaaaaaa        ? a = (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6381       "                                             : dddddddddddddddddd)\n"
6382       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6383       "                        : 3333333333333333;",
6384       Style);
6385   verifyFormat(
6386       "return aaaaaaaaa        ? a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6387       "                                             : dddddddddddddddddd)\n"
6388       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6389       "                        : 3333333333333333;",
6390       Style);
6391   verifyFormat(
6392       "return aaaaaaaaa        ? 1111111111111111\n"
6393       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6394       "                        : a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6395       "                                             : dddddddddddddddddd)\n",
6396       Style);
6397   verifyFormat(
6398       "return aaaaaaaaaaaaaaaa ? 1111111111111111\n"
6399       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6400       "                        : (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6401       "                                             : cccccccccccccccccc);",
6402       Style);
6403   verifyFormat(
6404       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6405       "                           : ccccccccccccccc ? dddddddddddddddddd\n"
6406       "                                             : eeeeeeeeeeeeeeeeee)\n"
6407       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6408       "                        : 3333333333333333;",
6409       Style);
6410   verifyFormat(
6411       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaa    ? bbbbbbbbbbbbbbbbbb\n"
6412       "                           : ccccccccccccccc ? dddddddddddddddddd\n"
6413       "                                             : eeeeeeeeeeeeeeeeee)\n"
6414       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6415       "                        : 3333333333333333;",
6416       Style);
6417   verifyFormat(
6418       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6419       "                           : cccccccccccc    ? dddddddddddddddddd\n"
6420       "                                             : eeeeeeeeeeeeeeeeee)\n"
6421       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6422       "                        : 3333333333333333;",
6423       Style);
6424   verifyFormat(
6425       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6426       "                                             : cccccccccccccccccc\n"
6427       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6428       "                        : 3333333333333333;",
6429       Style);
6430   verifyFormat(
6431       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6432       "                          : cccccccccccccccc ? dddddddddddddddddd\n"
6433       "                                             : eeeeeeeeeeeeeeeeee\n"
6434       "       : bbbbbbbbbbbbbb ? 2222222222222222\n"
6435       "                        : 3333333333333333;",
6436       Style);
6437   verifyFormat("return aaaaaaaaaaaaaaaaaaaaa\n"
6438                "           ? (aaaaaaaaaaaaaaaaaa   ? bbbbbbbbbbbbbbbbbb\n"
6439                "              : cccccccccccccccccc ? dddddddddddddddddd\n"
6440                "                                   : eeeeeeeeeeeeeeeeee)\n"
6441                "       : bbbbbbbbbbbbbbbbbbb ? 2222222222222222\n"
6442                "                             : 3333333333333333;",
6443                Style);
6444   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaa\n"
6445                "           ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb\n"
6446                "             : cccccccccccccccc ? dddddddddddddddddd\n"
6447                "                                : eeeeeeeeeeeeeeeeee\n"
6448                "       : bbbbbbbbbbbbbbbbbbbbbbb ? 2222222222222222\n"
6449                "                                 : 3333333333333333;",
6450                Style);
6451 
6452   Style.AlignOperands = FormatStyle::OAS_DontAlign;
6453   Style.BreakBeforeTernaryOperators = false;
6454   // FIXME: Aligning the question marks is weird given DontAlign.
6455   // Consider disabling this alignment in this case. Also check whether this
6456   // will render the adjustment from https://reviews.llvm.org/D82199
6457   // unnecessary.
6458   verifyFormat("int x = aaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa :\n"
6459                "    bbbb                ? cccccccccccccccccc :\n"
6460                "                          ddddd;\n",
6461                Style);
6462 }
6463 
6464 TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) {
6465   FormatStyle Style = getLLVMStyle();
6466   Style.BreakBeforeTernaryOperators = false;
6467   Style.ColumnLimit = 70;
6468   verifyFormat(
6469       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6470       "                               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
6471       "                               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6472       Style);
6473   verifyFormat(
6474       "aaaa(aaaaaaaaaa, aaaaaaaa,\n"
6475       "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
6476       "                                  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6477       Style);
6478   verifyFormat(
6479       "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
6480       "                                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6481       Style);
6482   verifyFormat("aaaa(aaaaaaaa, aaaaaaaaaa,\n"
6483                "     aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
6484                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6485                Style);
6486   verifyFormat(
6487       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n"
6488       "                                                      aaaaaaaaaaaaa);",
6489       Style);
6490   verifyFormat(
6491       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6492       "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
6493       "                                      aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6494       "                   aaaaaaaaaaaaa);",
6495       Style);
6496   verifyFormat(
6497       "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6498       "                   aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6499       "                   aaaaaaaaaaaaa);",
6500       Style);
6501   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6502                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6503                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
6504                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6505                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6506                Style);
6507   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6508                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6509                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6510                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n"
6511                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6512                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6513                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6514                Style);
6515   verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
6516                "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n"
6517                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
6518                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
6519                "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);",
6520                Style);
6521   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6522                "    aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
6523                "    aaaaaaaaaaaaaaaaaaaaaaaaaaa;",
6524                Style);
6525   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
6526                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6527                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
6528                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
6529                Style);
6530   verifyFormat(
6531       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6532       "    aaaaaaaaaaaaaaa :\n"
6533       "    aaaaaaaaaaaaaaa;",
6534       Style);
6535   verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
6536                "          aaaaaaaaa ?\n"
6537                "      b :\n"
6538                "      c);",
6539                Style);
6540   verifyFormat("unsigned Indent =\n"
6541                "    format(TheLine.First,\n"
6542                "           IndentForLevel[TheLine.Level] >= 0 ?\n"
6543                "               IndentForLevel[TheLine.Level] :\n"
6544                "               TheLine * 2,\n"
6545                "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
6546                Style);
6547   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n"
6548                "                  aaaaaaaaaaaaaaa :\n"
6549                "                  bbbbbbbbbbbbbbb ? //\n"
6550                "                      ccccccccccccccc :\n"
6551                "                      ddddddddddddddd;",
6552                Style);
6553   verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n"
6554                "                  aaaaaaaaaaaaaaa :\n"
6555                "                  (bbbbbbbbbbbbbbb ? //\n"
6556                "                       ccccccccccccccc :\n"
6557                "                       ddddddddddddddd);",
6558                Style);
6559   verifyFormat("int i = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6560                "            /*bbbbbbbbbbbbbbb=*/bbbbbbbbbbbbbbbbbbbbbbbbb :\n"
6561                "            ccccccccccccccccccccccccccc;",
6562                Style);
6563   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n"
6564                "           aaaaa :\n"
6565                "           bbbbbbbbbbbbbbb + cccccccccccccccc;",
6566                Style);
6567 
6568   // Chained conditionals
6569   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
6570                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6571                "                          3333333333333333;",
6572                Style);
6573   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
6574                "       bbbbbbbbbb       ? 2222222222222222 :\n"
6575                "                          3333333333333333;",
6576                Style);
6577   verifyFormat("return aaaaaaaaaa       ? 1111111111111111 :\n"
6578                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6579                "                          3333333333333333;",
6580                Style);
6581   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
6582                "       bbbbbbbbbbbbbbbb ? 222222 :\n"
6583                "                          333333;",
6584                Style);
6585   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
6586                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6587                "       cccccccccccccccc ? 3333333333333333 :\n"
6588                "                          4444444444444444;",
6589                Style);
6590   verifyFormat("return aaaaaaaaaaaaaaaa ? (aaa ? bbb : ccc) :\n"
6591                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6592                "                          3333333333333333;",
6593                Style);
6594   verifyFormat("return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
6595                "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6596                "                          (aaa ? bbb : ccc);",
6597                Style);
6598   verifyFormat(
6599       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6600       "                                               cccccccccccccccccc) :\n"
6601       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6602       "                          3333333333333333;",
6603       Style);
6604   verifyFormat(
6605       "return aaaaaaaaa        ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6606       "                                               cccccccccccccccccc) :\n"
6607       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6608       "                          3333333333333333;",
6609       Style);
6610   verifyFormat(
6611       "return aaaaaaaaa        ? a = (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6612       "                                               dddddddddddddddddd) :\n"
6613       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6614       "                          3333333333333333;",
6615       Style);
6616   verifyFormat(
6617       "return aaaaaaaaa        ? a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6618       "                                               dddddddddddddddddd) :\n"
6619       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6620       "                          3333333333333333;",
6621       Style);
6622   verifyFormat(
6623       "return aaaaaaaaa        ? 1111111111111111 :\n"
6624       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6625       "                          a + (aaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6626       "                                               dddddddddddddddddd)\n",
6627       Style);
6628   verifyFormat(
6629       "return aaaaaaaaaaaaaaaa ? 1111111111111111 :\n"
6630       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6631       "                          (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6632       "                                               cccccccccccccccccc);",
6633       Style);
6634   verifyFormat(
6635       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6636       "                           ccccccccccccccccc ? dddddddddddddddddd :\n"
6637       "                                               eeeeeeeeeeeeeeeeee) :\n"
6638       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6639       "                          3333333333333333;",
6640       Style);
6641   verifyFormat(
6642       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6643       "                           ccccccccccccc     ? dddddddddddddddddd :\n"
6644       "                                               eeeeeeeeeeeeeeeeee) :\n"
6645       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6646       "                          3333333333333333;",
6647       Style);
6648   verifyFormat(
6649       "return aaaaaaaaaaaaaaaa ? (aaaaaaaaaaaaa     ? bbbbbbbbbbbbbbbbbb :\n"
6650       "                           ccccccccccccccccc ? dddddddddddddddddd :\n"
6651       "                                               eeeeeeeeeeeeeeeeee) :\n"
6652       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6653       "                          3333333333333333;",
6654       Style);
6655   verifyFormat(
6656       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6657       "                                               cccccccccccccccccc :\n"
6658       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6659       "                          3333333333333333;",
6660       Style);
6661   verifyFormat(
6662       "return aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6663       "                          cccccccccccccccccc ? dddddddddddddddddd :\n"
6664       "                                               eeeeeeeeeeeeeeeeee :\n"
6665       "       bbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6666       "                          3333333333333333;",
6667       Style);
6668   verifyFormat("return aaaaaaaaaaaaaaaaaaaaa ?\n"
6669                "           (aaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6670                "            cccccccccccccccccc ? dddddddddddddddddd :\n"
6671                "                                 eeeeeeeeeeeeeeeeee) :\n"
6672                "       bbbbbbbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6673                "                               3333333333333333;",
6674                Style);
6675   verifyFormat("return aaaaaaaaaaaaaaaaaaaaa ?\n"
6676                "           aaaaaaaaaaaaaaaaaaaa ? bbbbbbbbbbbbbbbbbb :\n"
6677                "           cccccccccccccccccccc ? dddddddddddddddddd :\n"
6678                "                                  eeeeeeeeeeeeeeeeee :\n"
6679                "       bbbbbbbbbbbbbbbbbbbbb ? 2222222222222222 :\n"
6680                "                               3333333333333333;",
6681                Style);
6682 }
6683 
6684 TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
6685   verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n"
6686                "     aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();");
6687   verifyFormat("bool a = true, b = false;");
6688 
6689   verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n"
6690                "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n"
6691                "     bbbbbbbbbbbbbbbbbbbbbbbbb =\n"
6692                "         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);");
6693   verifyFormat(
6694       "bool aaaaaaaaaaaaaaaaaaaaa =\n"
6695       "         bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n"
6696       "     d = e && f;");
6697   verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n"
6698                "          c = cccccccccccccccccccc, d = dddddddddddddddddddd;");
6699   verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
6700                "          *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;");
6701   verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n"
6702                "          ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;");
6703 
6704   FormatStyle Style = getGoogleStyle();
6705   Style.PointerAlignment = FormatStyle::PAS_Left;
6706   Style.DerivePointerAlignment = false;
6707   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
6708                "    *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n"
6709                "    *b = bbbbbbbbbbbbbbbbbbb;",
6710                Style);
6711   verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
6712                "          *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;",
6713                Style);
6714   verifyFormat("vector<int*> a, b;", Style);
6715   verifyFormat("for (int *p, *q; p != q; p = p->next) {\n}", Style);
6716 }
6717 
6718 TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
6719   verifyFormat("arr[foo ? bar : baz];");
6720   verifyFormat("f()[foo ? bar : baz];");
6721   verifyFormat("(a + b)[foo ? bar : baz];");
6722   verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
6723 }
6724 
6725 TEST_F(FormatTest, AlignsStringLiterals) {
6726   verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
6727                "                                      \"short literal\");");
6728   verifyFormat(
6729       "looooooooooooooooooooooooongFunction(\n"
6730       "    \"short literal\"\n"
6731       "    \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
6732   verifyFormat("someFunction(\"Always break between multi-line\"\n"
6733                "             \" string literals\",\n"
6734                "             and, other, parameters);");
6735   EXPECT_EQ("fun + \"1243\" /* comment */\n"
6736             "      \"5678\";",
6737             format("fun + \"1243\" /* comment */\n"
6738                    "    \"5678\";",
6739                    getLLVMStyleWithColumns(28)));
6740   EXPECT_EQ(
6741       "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
6742       "         \"aaaaaaaaaaaaaaaaaaaaa\"\n"
6743       "         \"aaaaaaaaaaaaaaaa\";",
6744       format("aaaaaa ="
6745              "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa "
6746              "aaaaaaaaaaaaaaaaaaaaa\" "
6747              "\"aaaaaaaaaaaaaaaa\";"));
6748   verifyFormat("a = a + \"a\"\n"
6749                "        \"a\"\n"
6750                "        \"a\";");
6751   verifyFormat("f(\"a\", \"b\"\n"
6752                "       \"c\");");
6753 
6754   verifyFormat(
6755       "#define LL_FORMAT \"ll\"\n"
6756       "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n"
6757       "       \"d, ddddddddd: %\" LL_FORMAT \"d\");");
6758 
6759   verifyFormat("#define A(X)          \\\n"
6760                "  \"aaaaa\" #X \"bbbbbb\" \\\n"
6761                "  \"ccccc\"",
6762                getLLVMStyleWithColumns(23));
6763   verifyFormat("#define A \"def\"\n"
6764                "f(\"abc\" A \"ghi\"\n"
6765                "  \"jkl\");");
6766 
6767   verifyFormat("f(L\"a\"\n"
6768                "  L\"b\");");
6769   verifyFormat("#define A(X)            \\\n"
6770                "  L\"aaaaa\" #X L\"bbbbbb\" \\\n"
6771                "  L\"ccccc\"",
6772                getLLVMStyleWithColumns(25));
6773 
6774   verifyFormat("f(@\"a\"\n"
6775                "  @\"b\");");
6776   verifyFormat("NSString s = @\"a\"\n"
6777                "             @\"b\"\n"
6778                "             @\"c\";");
6779   verifyFormat("NSString s = @\"a\"\n"
6780                "              \"b\"\n"
6781                "              \"c\";");
6782 }
6783 
6784 TEST_F(FormatTest, ReturnTypeBreakingStyle) {
6785   FormatStyle Style = getLLVMStyle();
6786   // No declarations or definitions should be moved to own line.
6787   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_None;
6788   verifyFormat("class A {\n"
6789                "  int f() { return 1; }\n"
6790                "  int g();\n"
6791                "};\n"
6792                "int f() { return 1; }\n"
6793                "int g();\n",
6794                Style);
6795 
6796   // All declarations and definitions should have the return type moved to its
6797   // own line.
6798   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
6799   Style.TypenameMacros = {"LIST"};
6800   verifyFormat("SomeType\n"
6801                "funcdecl(LIST(uint64_t));",
6802                Style);
6803   verifyFormat("class E {\n"
6804                "  int\n"
6805                "  f() {\n"
6806                "    return 1;\n"
6807                "  }\n"
6808                "  int\n"
6809                "  g();\n"
6810                "};\n"
6811                "int\n"
6812                "f() {\n"
6813                "  return 1;\n"
6814                "}\n"
6815                "int\n"
6816                "g();\n",
6817                Style);
6818 
6819   // Top-level definitions, and no kinds of declarations should have the
6820   // return type moved to its own line.
6821   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevelDefinitions;
6822   verifyFormat("class B {\n"
6823                "  int f() { return 1; }\n"
6824                "  int g();\n"
6825                "};\n"
6826                "int\n"
6827                "f() {\n"
6828                "  return 1;\n"
6829                "}\n"
6830                "int g();\n",
6831                Style);
6832 
6833   // Top-level definitions and declarations should have the return type moved
6834   // to its own line.
6835   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevel;
6836   verifyFormat("class C {\n"
6837                "  int f() { return 1; }\n"
6838                "  int g();\n"
6839                "};\n"
6840                "int\n"
6841                "f() {\n"
6842                "  return 1;\n"
6843                "}\n"
6844                "int\n"
6845                "g();\n",
6846                Style);
6847 
6848   // All definitions should have the return type moved to its own line, but no
6849   // kinds of declarations.
6850   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_AllDefinitions;
6851   verifyFormat("class D {\n"
6852                "  int\n"
6853                "  f() {\n"
6854                "    return 1;\n"
6855                "  }\n"
6856                "  int g();\n"
6857                "};\n"
6858                "int\n"
6859                "f() {\n"
6860                "  return 1;\n"
6861                "}\n"
6862                "int g();\n",
6863                Style);
6864   verifyFormat("const char *\n"
6865                "f(void) {\n" // Break here.
6866                "  return \"\";\n"
6867                "}\n"
6868                "const char *bar(void);\n", // No break here.
6869                Style);
6870   verifyFormat("template <class T>\n"
6871                "T *\n"
6872                "f(T &c) {\n" // Break here.
6873                "  return NULL;\n"
6874                "}\n"
6875                "template <class T> T *f(T &c);\n", // No break here.
6876                Style);
6877   verifyFormat("class C {\n"
6878                "  int\n"
6879                "  operator+() {\n"
6880                "    return 1;\n"
6881                "  }\n"
6882                "  int\n"
6883                "  operator()() {\n"
6884                "    return 1;\n"
6885                "  }\n"
6886                "};\n",
6887                Style);
6888   verifyFormat("void\n"
6889                "A::operator()() {}\n"
6890                "void\n"
6891                "A::operator>>() {}\n"
6892                "void\n"
6893                "A::operator+() {}\n"
6894                "void\n"
6895                "A::operator*() {}\n"
6896                "void\n"
6897                "A::operator->() {}\n"
6898                "void\n"
6899                "A::operator void *() {}\n"
6900                "void\n"
6901                "A::operator void &() {}\n"
6902                "void\n"
6903                "A::operator void &&() {}\n"
6904                "void\n"
6905                "A::operator char *() {}\n"
6906                "void\n"
6907                "A::operator[]() {}\n"
6908                "void\n"
6909                "A::operator!() {}\n"
6910                "void\n"
6911                "A::operator**() {}\n"
6912                "void\n"
6913                "A::operator<Foo> *() {}\n"
6914                "void\n"
6915                "A::operator<Foo> **() {}\n"
6916                "void\n"
6917                "A::operator<Foo> &() {}\n"
6918                "void\n"
6919                "A::operator void **() {}\n",
6920                Style);
6921   verifyFormat("constexpr auto\n"
6922                "operator()() const -> reference {}\n"
6923                "constexpr auto\n"
6924                "operator>>() const -> reference {}\n"
6925                "constexpr auto\n"
6926                "operator+() const -> reference {}\n"
6927                "constexpr auto\n"
6928                "operator*() const -> reference {}\n"
6929                "constexpr auto\n"
6930                "operator->() const -> reference {}\n"
6931                "constexpr auto\n"
6932                "operator++() const -> reference {}\n"
6933                "constexpr auto\n"
6934                "operator void *() const -> reference {}\n"
6935                "constexpr auto\n"
6936                "operator void **() const -> reference {}\n"
6937                "constexpr auto\n"
6938                "operator void *() const -> reference {}\n"
6939                "constexpr auto\n"
6940                "operator void &() const -> reference {}\n"
6941                "constexpr auto\n"
6942                "operator void &&() const -> reference {}\n"
6943                "constexpr auto\n"
6944                "operator char *() const -> reference {}\n"
6945                "constexpr auto\n"
6946                "operator!() const -> reference {}\n"
6947                "constexpr auto\n"
6948                "operator[]() const -> reference {}\n",
6949                Style);
6950   verifyFormat("void *operator new(std::size_t s);", // No break here.
6951                Style);
6952   verifyFormat("void *\n"
6953                "operator new(std::size_t s) {}",
6954                Style);
6955   verifyFormat("void *\n"
6956                "operator delete[](void *ptr) {}",
6957                Style);
6958   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
6959   verifyFormat("const char *\n"
6960                "f(void)\n" // Break here.
6961                "{\n"
6962                "  return \"\";\n"
6963                "}\n"
6964                "const char *bar(void);\n", // No break here.
6965                Style);
6966   verifyFormat("template <class T>\n"
6967                "T *\n"     // Problem here: no line break
6968                "f(T &c)\n" // Break here.
6969                "{\n"
6970                "  return NULL;\n"
6971                "}\n"
6972                "template <class T> T *f(T &c);\n", // No break here.
6973                Style);
6974   verifyFormat("int\n"
6975                "foo(A<bool> a)\n"
6976                "{\n"
6977                "  return a;\n"
6978                "}\n",
6979                Style);
6980   verifyFormat("int\n"
6981                "foo(A<8> a)\n"
6982                "{\n"
6983                "  return a;\n"
6984                "}\n",
6985                Style);
6986   verifyFormat("int\n"
6987                "foo(A<B<bool>, 8> a)\n"
6988                "{\n"
6989                "  return a;\n"
6990                "}\n",
6991                Style);
6992   verifyFormat("int\n"
6993                "foo(A<B<8>, bool> a)\n"
6994                "{\n"
6995                "  return a;\n"
6996                "}\n",
6997                Style);
6998   verifyFormat("int\n"
6999                "foo(A<B<bool>, bool> a)\n"
7000                "{\n"
7001                "  return a;\n"
7002                "}\n",
7003                Style);
7004   verifyFormat("int\n"
7005                "foo(A<B<8>, 8> a)\n"
7006                "{\n"
7007                "  return a;\n"
7008                "}\n",
7009                Style);
7010 
7011   Style = getGNUStyle();
7012 
7013   // Test for comments at the end of function declarations.
7014   verifyFormat("void\n"
7015                "foo (int a, /*abc*/ int b) // def\n"
7016                "{\n"
7017                "}\n",
7018                Style);
7019 
7020   verifyFormat("void\n"
7021                "foo (int a, /* abc */ int b) /* def */\n"
7022                "{\n"
7023                "}\n",
7024                Style);
7025 
7026   // Definitions that should not break after return type
7027   verifyFormat("void foo (int a, int b); // def\n", Style);
7028   verifyFormat("void foo (int a, int b); /* def */\n", Style);
7029   verifyFormat("void foo (int a, int b);\n", Style);
7030 }
7031 
7032 TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) {
7033   FormatStyle NoBreak = getLLVMStyle();
7034   NoBreak.AlwaysBreakBeforeMultilineStrings = false;
7035   FormatStyle Break = getLLVMStyle();
7036   Break.AlwaysBreakBeforeMultilineStrings = true;
7037   verifyFormat("aaaa = \"bbbb\"\n"
7038                "       \"cccc\";",
7039                NoBreak);
7040   verifyFormat("aaaa =\n"
7041                "    \"bbbb\"\n"
7042                "    \"cccc\";",
7043                Break);
7044   verifyFormat("aaaa(\"bbbb\"\n"
7045                "     \"cccc\");",
7046                NoBreak);
7047   verifyFormat("aaaa(\n"
7048                "    \"bbbb\"\n"
7049                "    \"cccc\");",
7050                Break);
7051   verifyFormat("aaaa(qqq, \"bbbb\"\n"
7052                "          \"cccc\");",
7053                NoBreak);
7054   verifyFormat("aaaa(qqq,\n"
7055                "     \"bbbb\"\n"
7056                "     \"cccc\");",
7057                Break);
7058   verifyFormat("aaaa(qqq,\n"
7059                "     L\"bbbb\"\n"
7060                "     L\"cccc\");",
7061                Break);
7062   verifyFormat("aaaaa(aaaaaa, aaaaaaa(\"aaaa\"\n"
7063                "                      \"bbbb\"));",
7064                Break);
7065   verifyFormat("string s = someFunction(\n"
7066                "    \"abc\"\n"
7067                "    \"abc\");",
7068                Break);
7069 
7070   // As we break before unary operators, breaking right after them is bad.
7071   verifyFormat("string foo = abc ? \"x\"\n"
7072                "                   \"blah blah blah blah blah blah\"\n"
7073                "                 : \"y\";",
7074                Break);
7075 
7076   // Don't break if there is no column gain.
7077   verifyFormat("f(\"aaaa\"\n"
7078                "  \"bbbb\");",
7079                Break);
7080 
7081   // Treat literals with escaped newlines like multi-line string literals.
7082   EXPECT_EQ("x = \"a\\\n"
7083             "b\\\n"
7084             "c\";",
7085             format("x = \"a\\\n"
7086                    "b\\\n"
7087                    "c\";",
7088                    NoBreak));
7089   EXPECT_EQ("xxxx =\n"
7090             "    \"a\\\n"
7091             "b\\\n"
7092             "c\";",
7093             format("xxxx = \"a\\\n"
7094                    "b\\\n"
7095                    "c\";",
7096                    Break));
7097 
7098   EXPECT_EQ("NSString *const kString =\n"
7099             "    @\"aaaa\"\n"
7100             "    @\"bbbb\";",
7101             format("NSString *const kString = @\"aaaa\"\n"
7102                    "@\"bbbb\";",
7103                    Break));
7104 
7105   Break.ColumnLimit = 0;
7106   verifyFormat("const char *hello = \"hello llvm\";", Break);
7107 }
7108 
7109 TEST_F(FormatTest, AlignsPipes) {
7110   verifyFormat(
7111       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7112       "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7113       "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7114   verifyFormat(
7115       "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
7116       "                     << aaaaaaaaaaaaaaaaaaaa;");
7117   verifyFormat(
7118       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7119       "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7120   verifyFormat(
7121       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n"
7122       "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7123   verifyFormat(
7124       "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
7125       "                \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
7126       "             << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
7127   verifyFormat(
7128       "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7129       "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7130       "         << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7131   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7132                "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7133                "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7134                "             << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
7135   verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaaaaaa: \"\n"
7136                "             << aaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaa);");
7137   verifyFormat(
7138       "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7139       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7140   verifyFormat(
7141       "auto Diag = diag() << aaaaaaaaaaaaaaaa(aaaaaaaaaaaa, aaaaaaaaaaaaa,\n"
7142       "                                       aaaaaaaaaaaaaaaaaaaaaaaaaa);");
7143 
7144   verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n"
7145                "             << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();");
7146   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7147                "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7148                "                    aaaaaaaaaaaaaaaaaaaaa)\n"
7149                "             << aaaaaaaaaaaaaaaaaaaaaaaaaa;");
7150   verifyFormat("LOG_IF(aaa == //\n"
7151                "       bbb)\n"
7152                "    << a << b;");
7153 
7154   // But sometimes, breaking before the first "<<" is desirable.
7155   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n"
7156                "    << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);");
7157   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n"
7158                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7159                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7160   verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n"
7161                "    << BEF << IsTemplate << Description << E->getType();");
7162   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n"
7163                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7164                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7165   verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n"
7166                "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7167                "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7168                "    << aaa;");
7169 
7170   verifyFormat(
7171       "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7172       "                    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7173 
7174   // Incomplete string literal.
7175   EXPECT_EQ("llvm::errs() << \"\n"
7176             "             << a;",
7177             format("llvm::errs() << \"\n<<a;"));
7178 
7179   verifyFormat("void f() {\n"
7180                "  CHECK_EQ(aaaa, (*bbbbbbbbb)->cccccc)\n"
7181                "      << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n"
7182                "}");
7183 
7184   // Handle 'endl'.
7185   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << endl\n"
7186                "             << bbbbbbbbbbbbbbbbbbbbbb << endl;");
7187   verifyFormat("llvm::errs() << endl << bbbbbbbbbbbbbbbbbbbbbb << endl;");
7188 
7189   // Handle '\n'.
7190   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \"\\n\"\n"
7191                "             << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";");
7192   verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \'\\n\'\n"
7193                "             << bbbbbbbbbbbbbbbbbbbbbb << \'\\n\';");
7194   verifyFormat("llvm::errs() << aaaa << \"aaaaaaaaaaaaaaaaaa\\n\"\n"
7195                "             << bbbb << \"bbbbbbbbbbbbbbbbbb\\n\";");
7196   verifyFormat("llvm::errs() << \"\\n\" << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";");
7197 }
7198 
7199 TEST_F(FormatTest, KeepStringLabelValuePairsOnALine) {
7200   verifyFormat("return out << \"somepacket = {\\n\"\n"
7201                "           << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n"
7202                "           << \" bbbb = \" << pkt.bbbb << \"\\n\"\n"
7203                "           << \" cccccc = \" << pkt.cccccc << \"\\n\"\n"
7204                "           << \" ddd = [\" << pkt.ddd << \"]\\n\"\n"
7205                "           << \"}\";");
7206 
7207   verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n"
7208                "             << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n"
7209                "             << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;");
7210   verifyFormat(
7211       "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n"
7212       "             << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n"
7213       "             << \"ccccccccccccccccc = \" << ccccccccccccccccc\n"
7214       "             << \"ddddddddddddddddd = \" << ddddddddddddddddd\n"
7215       "             << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;");
7216   verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n"
7217                "             << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
7218   verifyFormat(
7219       "void f() {\n"
7220       "  llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n"
7221       "               << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
7222       "}");
7223 
7224   // Breaking before the first "<<" is generally not desirable.
7225   verifyFormat(
7226       "llvm::errs()\n"
7227       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7228       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7229       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7230       "    << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
7231       getLLVMStyleWithColumns(70));
7232   verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n"
7233                "             << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7234                "             << \"aaaaaaaaaaaaaaaaaaa: \"\n"
7235                "             << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7236                "             << \"aaaaaaaaaaaaaaaaaaa: \"\n"
7237                "             << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;",
7238                getLLVMStyleWithColumns(70));
7239 
7240   verifyFormat("string v = \"aaaaaaaaaaaaaaaa: \" + aaaaaaaaaaaaaaaa +\n"
7241                "           \"aaaaaaaaaaaaaaaa: \" + aaaaaaaaaaaaaaaa +\n"
7242                "           \"aaaaaaaaaaaaaaaa: \" + aaaaaaaaaaaaaaaa;");
7243   verifyFormat("string v = StrCat(\"aaaaaaaaaaaaaaaa: \", aaaaaaaaaaaaaaaa,\n"
7244                "                  \"aaaaaaaaaaaaaaaa: \", aaaaaaaaaaaaaaaa,\n"
7245                "                  \"aaaaaaaaaaaaaaaa: \", aaaaaaaaaaaaaaaa);");
7246   verifyFormat("string v = \"aaaaaaaaaaaaaaaa: \" +\n"
7247                "           (aaaa + aaaa);",
7248                getLLVMStyleWithColumns(40));
7249   verifyFormat("string v = StrCat(\"aaaaaaaaaaaa: \" +\n"
7250                "                  (aaaaaaa + aaaaa));",
7251                getLLVMStyleWithColumns(40));
7252   verifyFormat(
7253       "string v = StrCat(\"aaaaaaaaaaaaaaaaaaaaaaaaaaa: \",\n"
7254       "                  SomeFunction(aaaaaaaaaaaa, aaaaaaaa.aaaaaaa),\n"
7255       "                  bbbbbbbbbbbbbbbbbbbbbbb);");
7256 }
7257 
7258 TEST_F(FormatTest, UnderstandsEquals) {
7259   verifyFormat(
7260       "aaaaaaaaaaaaaaaaa =\n"
7261       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
7262   verifyFormat(
7263       "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
7264       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
7265   verifyFormat(
7266       "if (a) {\n"
7267       "  f();\n"
7268       "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
7269       "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
7270       "}");
7271 
7272   verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
7273                "        100000000 + 10000000) {\n}");
7274 }
7275 
7276 TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
7277   verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
7278                "    .looooooooooooooooooooooooooooooooooooooongFunction();");
7279 
7280   verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
7281                "    ->looooooooooooooooooooooooooooooooooooooongFunction();");
7282 
7283   verifyFormat(
7284       "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
7285       "                                                          Parameter2);");
7286 
7287   verifyFormat(
7288       "ShortObject->shortFunction(\n"
7289       "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
7290       "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
7291 
7292   verifyFormat("loooooooooooooongFunction(\n"
7293                "    LoooooooooooooongObject->looooooooooooooooongFunction());");
7294 
7295   verifyFormat(
7296       "function(LoooooooooooooooooooooooooooooooooooongObject\n"
7297       "             ->loooooooooooooooooooooooooooooooooooooooongFunction());");
7298 
7299   verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
7300                "    .WillRepeatedly(Return(SomeValue));");
7301   verifyFormat("void f() {\n"
7302                "  EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
7303                "      .Times(2)\n"
7304                "      .WillRepeatedly(Return(SomeValue));\n"
7305                "}");
7306   verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n"
7307                "    ccccccccccccccccccccccc);");
7308   verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7309                "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7310                "          .aaaaa(aaaaa),\n"
7311                "      aaaaaaaaaaaaaaaaaaaaa);");
7312   verifyFormat("void f() {\n"
7313                "  aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7314                "      aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n"
7315                "}");
7316   verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7317                "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7318                "    .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7319                "                        aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7320                "                        aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
7321   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7322                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7323                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7324                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n"
7325                "}");
7326 
7327   // Here, it is not necessary to wrap at "." or "->".
7328   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
7329                "    aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
7330   verifyFormat(
7331       "aaaaaaaaaaa->aaaaaaaaa(\n"
7332       "    aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7333       "    aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n");
7334 
7335   verifyFormat(
7336       "aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7337       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());");
7338   verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n"
7339                "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
7340   verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n"
7341                "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
7342 
7343   verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7344                "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7345                "    .a();");
7346 
7347   FormatStyle NoBinPacking = getLLVMStyle();
7348   NoBinPacking.BinPackParameters = false;
7349   verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
7350                "    .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
7351                "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n"
7352                "                         aaaaaaaaaaaaaaaaaaa,\n"
7353                "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
7354                NoBinPacking);
7355 
7356   // If there is a subsequent call, change to hanging indentation.
7357   verifyFormat(
7358       "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7359       "                         aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n"
7360       "    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7361   verifyFormat(
7362       "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7363       "    aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));");
7364   verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7365                "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7366                "                 .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7367   verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7368                "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
7369                "               .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
7370 }
7371 
7372 TEST_F(FormatTest, WrapsTemplateDeclarations) {
7373   verifyFormat("template <typename T>\n"
7374                "virtual void loooooooooooongFunction(int Param1, int Param2);");
7375   verifyFormat("template <typename T>\n"
7376                "// T should be one of {A, B}.\n"
7377                "virtual void loooooooooooongFunction(int Param1, int Param2);");
7378   verifyFormat(
7379       "template <typename T>\n"
7380       "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;");
7381   verifyFormat("template <typename T>\n"
7382                "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n"
7383                "       int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);");
7384   verifyFormat(
7385       "template <typename T>\n"
7386       "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n"
7387       "                                      int Paaaaaaaaaaaaaaaaaaaaram2);");
7388   verifyFormat(
7389       "template <typename T>\n"
7390       "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n"
7391       "                    aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n"
7392       "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7393   verifyFormat("template <typename T>\n"
7394                "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7395                "    int aaaaaaaaaaaaaaaaaaaaaa);");
7396   verifyFormat(
7397       "template <typename T1, typename T2 = char, typename T3 = char,\n"
7398       "          typename T4 = char>\n"
7399       "void f();");
7400   verifyFormat("template <typename aaaaaaaaaaa, typename bbbbbbbbbbbbb,\n"
7401                "          template <typename> class cccccccccccccccccccccc,\n"
7402                "          typename ddddddddddddd>\n"
7403                "class C {};");
7404   verifyFormat(
7405       "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
7406       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
7407 
7408   verifyFormat("void f() {\n"
7409                "  a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n"
7410                "      a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n"
7411                "}");
7412 
7413   verifyFormat("template <typename T> class C {};");
7414   verifyFormat("template <typename T> void f();");
7415   verifyFormat("template <typename T> void f() {}");
7416   verifyFormat(
7417       "aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
7418       "              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7419       "              aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n"
7420       "    new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n"
7421       "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7422       "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n"
7423       "        bbbbbbbbbbbbbbbbbbbbbbbb);",
7424       getLLVMStyleWithColumns(72));
7425   EXPECT_EQ("static_cast<A< //\n"
7426             "    B> *>(\n"
7427             "\n"
7428             ");",
7429             format("static_cast<A<//\n"
7430                    "    B>*>(\n"
7431                    "\n"
7432                    "    );"));
7433   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7434                "    const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);");
7435 
7436   FormatStyle AlwaysBreak = getLLVMStyle();
7437   AlwaysBreak.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
7438   verifyFormat("template <typename T>\nclass C {};", AlwaysBreak);
7439   verifyFormat("template <typename T>\nvoid f();", AlwaysBreak);
7440   verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak);
7441   verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7442                "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n"
7443                "    ccccccccccccccccccccccccccccccccccccccccccccccc);");
7444   verifyFormat("template <template <typename> class Fooooooo,\n"
7445                "          template <typename> class Baaaaaaar>\n"
7446                "struct C {};",
7447                AlwaysBreak);
7448   verifyFormat("template <typename T> // T can be A, B or C.\n"
7449                "struct C {};",
7450                AlwaysBreak);
7451   verifyFormat("template <enum E> class A {\n"
7452                "public:\n"
7453                "  E *f();\n"
7454                "};");
7455 
7456   FormatStyle NeverBreak = getLLVMStyle();
7457   NeverBreak.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_No;
7458   verifyFormat("template <typename T> class C {};", NeverBreak);
7459   verifyFormat("template <typename T> void f();", NeverBreak);
7460   verifyFormat("template <typename T> void f() {}", NeverBreak);
7461   verifyFormat("template <typename T>\nvoid foo(aaaaaaaaaaaaaaaaaaaaaaaaaa "
7462                "bbbbbbbbbbbbbbbbbbbb) {}",
7463                NeverBreak);
7464   verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7465                "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n"
7466                "    ccccccccccccccccccccccccccccccccccccccccccccccc);",
7467                NeverBreak);
7468   verifyFormat("template <template <typename> class Fooooooo,\n"
7469                "          template <typename> class Baaaaaaar>\n"
7470                "struct C {};",
7471                NeverBreak);
7472   verifyFormat("template <typename T> // T can be A, B or C.\n"
7473                "struct C {};",
7474                NeverBreak);
7475   verifyFormat("template <enum E> class A {\n"
7476                "public:\n"
7477                "  E *f();\n"
7478                "};",
7479                NeverBreak);
7480   NeverBreak.PenaltyBreakTemplateDeclaration = 100;
7481   verifyFormat("template <typename T> void\nfoo(aaaaaaaaaaaaaaaaaaaaaaaaaa "
7482                "bbbbbbbbbbbbbbbbbbbb) {}",
7483                NeverBreak);
7484 }
7485 
7486 TEST_F(FormatTest, WrapsTemplateDeclarationsWithComments) {
7487   FormatStyle Style = getGoogleStyle(FormatStyle::LK_Cpp);
7488   Style.ColumnLimit = 60;
7489   EXPECT_EQ("// Baseline - no comments.\n"
7490             "template <\n"
7491             "    typename aaaaaaaaaaaaaaaaaaaaaa<bbbbbbbbbbbb>::value>\n"
7492             "void f() {}",
7493             format("// Baseline - no comments.\n"
7494                    "template <\n"
7495                    "    typename aaaaaaaaaaaaaaaaaaaaaa<bbbbbbbbbbbb>::value>\n"
7496                    "void f() {}",
7497                    Style));
7498 
7499   EXPECT_EQ("template <\n"
7500             "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value>  // trailing\n"
7501             "void f() {}",
7502             format("template <\n"
7503                    "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> // trailing\n"
7504                    "void f() {}",
7505                    Style));
7506 
7507   EXPECT_EQ(
7508       "template <\n"
7509       "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> /* line */\n"
7510       "void f() {}",
7511       format("template <typename aaaaaaaaaa<bbbbbbbbbbbb>::value>  /* line */\n"
7512              "void f() {}",
7513              Style));
7514 
7515   EXPECT_EQ(
7516       "template <\n"
7517       "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value>  // trailing\n"
7518       "                                               // multiline\n"
7519       "void f() {}",
7520       format("template <\n"
7521              "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> // trailing\n"
7522              "                                              // multiline\n"
7523              "void f() {}",
7524              Style));
7525 
7526   EXPECT_EQ(
7527       "template <typename aaaaaaaaaa<\n"
7528       "    bbbbbbbbbbbb>::value>  // trailing loooong\n"
7529       "void f() {}",
7530       format(
7531           "template <\n"
7532           "    typename aaaaaaaaaa<bbbbbbbbbbbb>::value> // trailing loooong\n"
7533           "void f() {}",
7534           Style));
7535 }
7536 
7537 TEST_F(FormatTest, WrapsTemplateParameters) {
7538   FormatStyle Style = getLLVMStyle();
7539   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
7540   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
7541   verifyFormat(
7542       "template <typename... a> struct q {};\n"
7543       "extern q<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa,\n"
7544       "    aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>\n"
7545       "    y;",
7546       Style);
7547   Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign;
7548   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
7549   verifyFormat(
7550       "template <typename... a> struct r {};\n"
7551       "extern r<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa,\n"
7552       "    aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>\n"
7553       "    y;",
7554       Style);
7555   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
7556   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
7557   verifyFormat("template <typename... a> struct s {};\n"
7558                "extern s<\n"
7559                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
7560                "aaaaaaaaaaaaaaaaaaaaaa,\n"
7561                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
7562                "aaaaaaaaaaaaaaaaaaaaaa>\n"
7563                "    y;",
7564                Style);
7565   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
7566   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
7567   verifyFormat("template <typename... a> struct t {};\n"
7568                "extern t<\n"
7569                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
7570                "aaaaaaaaaaaaaaaaaaaaaa,\n"
7571                "    aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa, "
7572                "aaaaaaaaaaaaaaaaaaaaaa>\n"
7573                "    y;",
7574                Style);
7575 }
7576 
7577 TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
7578   verifyFormat(
7579       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
7580       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7581   verifyFormat(
7582       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
7583       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7584       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
7585 
7586   // FIXME: Should we have the extra indent after the second break?
7587   verifyFormat(
7588       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
7589       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
7590       "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7591 
7592   verifyFormat(
7593       "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n"
7594       "                    cccccccccccccccccccccccccccccccccccccccccccccc());");
7595 
7596   // Breaking at nested name specifiers is generally not desirable.
7597   verifyFormat(
7598       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7599       "    aaaaaaaaaaaaaaaaaaaaaaa);");
7600 
7601   verifyFormat("aaaaaaaaaaaaaaaaaa(aaaaaaaa,\n"
7602                "                   aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
7603                "                       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
7604                "                   aaaaaaaaaaaaaaaaaaaaa);",
7605                getLLVMStyleWithColumns(74));
7606 
7607   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
7608                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7609                "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
7610 }
7611 
7612 TEST_F(FormatTest, UnderstandsTemplateParameters) {
7613   verifyFormat("A<int> a;");
7614   verifyFormat("A<A<A<int>>> a;");
7615   verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
7616   verifyFormat("bool x = a < 1 || 2 > a;");
7617   verifyFormat("bool x = 5 < f<int>();");
7618   verifyFormat("bool x = f<int>() > 5;");
7619   verifyFormat("bool x = 5 < a<int>::x;");
7620   verifyFormat("bool x = a < 4 ? a > 2 : false;");
7621   verifyFormat("bool x = f() ? a < 2 : a > 2;");
7622 
7623   verifyGoogleFormat("A<A<int>> a;");
7624   verifyGoogleFormat("A<A<A<int>>> a;");
7625   verifyGoogleFormat("A<A<A<A<int>>>> a;");
7626   verifyGoogleFormat("A<A<int> > a;");
7627   verifyGoogleFormat("A<A<A<int> > > a;");
7628   verifyGoogleFormat("A<A<A<A<int> > > > a;");
7629   verifyGoogleFormat("A<::A<int>> a;");
7630   verifyGoogleFormat("A<::A> a;");
7631   verifyGoogleFormat("A< ::A> a;");
7632   verifyGoogleFormat("A< ::A<int> > a;");
7633   EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle()));
7634   EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle()));
7635   EXPECT_EQ("A<::A<int>> a;", format("A< ::A<int>> a;", getGoogleStyle()));
7636   EXPECT_EQ("A<::A<int>> a;", format("A<::A<int> > a;", getGoogleStyle()));
7637   EXPECT_EQ("auto x = [] { A<A<A<A>>> a; };",
7638             format("auto x=[]{A<A<A<A> >> a;};", getGoogleStyle()));
7639 
7640   verifyFormat("A<A<int>> a;", getChromiumStyle(FormatStyle::LK_Cpp));
7641 
7642   // template closer followed by a token that starts with > or =
7643   verifyFormat("bool b = a<1> > 1;");
7644   verifyFormat("bool b = a<1> >= 1;");
7645   verifyFormat("int i = a<1> >> 1;");
7646   FormatStyle Style = getLLVMStyle();
7647   Style.SpaceBeforeAssignmentOperators = false;
7648   verifyFormat("bool b= a<1> == 1;", Style);
7649   verifyFormat("a<int> = 1;", Style);
7650   verifyFormat("a<int> >>= 1;", Style);
7651 
7652   verifyFormat("test >> a >> b;");
7653   verifyFormat("test << a >> b;");
7654 
7655   verifyFormat("f<int>();");
7656   verifyFormat("template <typename T> void f() {}");
7657   verifyFormat("struct A<std::enable_if<sizeof(T2) < sizeof(int32)>::type>;");
7658   verifyFormat("struct A<std::enable_if<sizeof(T2) ? sizeof(int32) : "
7659                "sizeof(char)>::type>;");
7660   verifyFormat("template <class T> struct S<std::is_arithmetic<T>{}> {};");
7661   verifyFormat("f(a.operator()<A>());");
7662   verifyFormat("f(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
7663                "      .template operator()<A>());",
7664                getLLVMStyleWithColumns(35));
7665 
7666   // Not template parameters.
7667   verifyFormat("return a < b && c > d;");
7668   verifyFormat("void f() {\n"
7669                "  while (a < b && c > d) {\n"
7670                "  }\n"
7671                "}");
7672   verifyFormat("template <typename... Types>\n"
7673                "typename enable_if<0 < sizeof...(Types)>::type Foo() {}");
7674 
7675   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
7676                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaa);",
7677                getLLVMStyleWithColumns(60));
7678   verifyFormat("static_assert(is_convertible<A &&, B>::value, \"AAA\");");
7679   verifyFormat("Constructor(A... a) : a_(X<A>{std::forward<A>(a)}...) {}");
7680   verifyFormat("< < < < < < < < < < < < < < < < < < < < < < < < < < < < < <");
7681   verifyFormat("some_templated_type<decltype([](int i) { return i; })>");
7682 }
7683 
7684 TEST_F(FormatTest, UnderstandsShiftOperators) {
7685   verifyFormat("if (i < x >> 1)");
7686   verifyFormat("while (i < x >> 1)");
7687   verifyFormat("for (unsigned i = 0; i < i; ++i, v = v >> 1)");
7688   verifyFormat("for (unsigned i = 0; i < x >> 1; ++i, v = v >> 1)");
7689   verifyFormat(
7690       "for (std::vector<int>::iterator i = 0; i < x >> 1; ++i, v = v >> 1)");
7691   verifyFormat("Foo.call<Bar<Function>>()");
7692   verifyFormat("if (Foo.call<Bar<Function>>() == 0)");
7693   verifyFormat("for (std::vector<std::pair<int>>::iterator i = 0; i < x >> 1; "
7694                "++i, v = v >> 1)");
7695   verifyFormat("if (w<u<v<x>>, 1>::t)");
7696 }
7697 
7698 TEST_F(FormatTest, BitshiftOperatorWidth) {
7699   EXPECT_EQ("int a = 1 << 2; /* foo\n"
7700             "                   bar */",
7701             format("int    a=1<<2;  /* foo\n"
7702                    "                   bar */"));
7703 
7704   EXPECT_EQ("int b = 256 >> 1; /* foo\n"
7705             "                     bar */",
7706             format("int  b  =256>>1 ;  /* foo\n"
7707                    "                      bar */"));
7708 }
7709 
7710 TEST_F(FormatTest, UnderstandsBinaryOperators) {
7711   verifyFormat("COMPARE(a, ==, b);");
7712   verifyFormat("auto s = sizeof...(Ts) - 1;");
7713 }
7714 
7715 TEST_F(FormatTest, UnderstandsPointersToMembers) {
7716   verifyFormat("int A::*x;");
7717   verifyFormat("int (S::*func)(void *);");
7718   verifyFormat("void f() { int (S::*func)(void *); }");
7719   verifyFormat("typedef bool *(Class::*Member)() const;");
7720   verifyFormat("void f() {\n"
7721                "  (a->*f)();\n"
7722                "  a->*x;\n"
7723                "  (a.*f)();\n"
7724                "  ((*a).*f)();\n"
7725                "  a.*x;\n"
7726                "}");
7727   verifyFormat("void f() {\n"
7728                "  (a->*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n"
7729                "      aaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);\n"
7730                "}");
7731   verifyFormat(
7732       "(aaaaaaaaaa->*bbbbbbb)(\n"
7733       "    aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
7734   FormatStyle Style = getLLVMStyle();
7735   Style.PointerAlignment = FormatStyle::PAS_Left;
7736   verifyFormat("typedef bool* (Class::*Member)() const;", Style);
7737 }
7738 
7739 TEST_F(FormatTest, UnderstandsUnaryOperators) {
7740   verifyFormat("int a = -2;");
7741   verifyFormat("f(-1, -2, -3);");
7742   verifyFormat("a[-1] = 5;");
7743   verifyFormat("int a = 5 + -2;");
7744   verifyFormat("if (i == -1) {\n}");
7745   verifyFormat("if (i != -1) {\n}");
7746   verifyFormat("if (i > -1) {\n}");
7747   verifyFormat("if (i < -1) {\n}");
7748   verifyFormat("++(a->f());");
7749   verifyFormat("--(a->f());");
7750   verifyFormat("(a->f())++;");
7751   verifyFormat("a[42]++;");
7752   verifyFormat("if (!(a->f())) {\n}");
7753   verifyFormat("if (!+i) {\n}");
7754   verifyFormat("~&a;");
7755 
7756   verifyFormat("a-- > b;");
7757   verifyFormat("b ? -a : c;");
7758   verifyFormat("n * sizeof char16;");
7759   verifyFormat("n * alignof char16;", getGoogleStyle());
7760   verifyFormat("sizeof(char);");
7761   verifyFormat("alignof(char);", getGoogleStyle());
7762 
7763   verifyFormat("return -1;");
7764   verifyFormat("throw -1;");
7765   verifyFormat("switch (a) {\n"
7766                "case -1:\n"
7767                "  break;\n"
7768                "}");
7769   verifyFormat("#define X -1");
7770   verifyFormat("#define X -kConstant");
7771 
7772   verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {-5, +3};");
7773   verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {+5, -3};");
7774 
7775   verifyFormat("int a = /* confusing comment */ -1;");
7776   // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case.
7777   verifyFormat("int a = i /* confusing comment */++;");
7778 
7779   verifyFormat("co_yield -1;");
7780   verifyFormat("co_return -1;");
7781 
7782   // Check that * is not treated as a binary operator when we set
7783   // PointerAlignment as PAS_Left after a keyword and not a declaration.
7784   FormatStyle PASLeftStyle = getLLVMStyle();
7785   PASLeftStyle.PointerAlignment = FormatStyle::PAS_Left;
7786   verifyFormat("co_return *a;", PASLeftStyle);
7787   verifyFormat("co_await *a;", PASLeftStyle);
7788   verifyFormat("co_yield *a", PASLeftStyle);
7789   verifyFormat("return *a;", PASLeftStyle);
7790 }
7791 
7792 TEST_F(FormatTest, DoesNotIndentRelativeToUnaryOperators) {
7793   verifyFormat("if (!aaaaaaaaaa( // break\n"
7794                "        aaaaa)) {\n"
7795                "}");
7796   verifyFormat("aaaaaaaaaa(!aaaaaaaaaa( // break\n"
7797                "    aaaaa));");
7798   verifyFormat("*aaa = aaaaaaa( // break\n"
7799                "    bbbbbb);");
7800 }
7801 
7802 TEST_F(FormatTest, UnderstandsOverloadedOperators) {
7803   verifyFormat("bool operator<();");
7804   verifyFormat("bool operator>();");
7805   verifyFormat("bool operator=();");
7806   verifyFormat("bool operator==();");
7807   verifyFormat("bool operator!=();");
7808   verifyFormat("int operator+();");
7809   verifyFormat("int operator++();");
7810   verifyFormat("int operator++(int) volatile noexcept;");
7811   verifyFormat("bool operator,();");
7812   verifyFormat("bool operator();");
7813   verifyFormat("bool operator()();");
7814   verifyFormat("bool operator[]();");
7815   verifyFormat("operator bool();");
7816   verifyFormat("operator int();");
7817   verifyFormat("operator void *();");
7818   verifyFormat("operator SomeType<int>();");
7819   verifyFormat("operator SomeType<int, int>();");
7820   verifyFormat("operator SomeType<SomeType<int>>();");
7821   verifyFormat("void *operator new(std::size_t size);");
7822   verifyFormat("void *operator new[](std::size_t size);");
7823   verifyFormat("void operator delete(void *ptr);");
7824   verifyFormat("void operator delete[](void *ptr);");
7825   verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n"
7826                "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);");
7827   verifyFormat("aaaaaaaaaaaaaaaaaaaaaa operator,(\n"
7828                "    aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaaaaaaaaaaaaaaaaaaa) const;");
7829 
7830   verifyFormat(
7831       "ostream &operator<<(ostream &OutputStream,\n"
7832       "                    SomeReallyLongType WithSomeReallyLongValue);");
7833   verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n"
7834                "               const aaaaaaaaaaaaaaaaaaaaa &right) {\n"
7835                "  return left.group < right.group;\n"
7836                "}");
7837   verifyFormat("SomeType &operator=(const SomeType &S);");
7838   verifyFormat("f.template operator()<int>();");
7839 
7840   verifyGoogleFormat("operator void*();");
7841   verifyGoogleFormat("operator SomeType<SomeType<int>>();");
7842   verifyGoogleFormat("operator ::A();");
7843 
7844   verifyFormat("using A::operator+;");
7845   verifyFormat("inline A operator^(const A &lhs, const A &rhs) {}\n"
7846                "int i;");
7847 }
7848 
7849 TEST_F(FormatTest, UnderstandsFunctionRefQualification) {
7850   verifyFormat("Deleted &operator=(const Deleted &) & = default;");
7851   verifyFormat("Deleted &operator=(const Deleted &) && = delete;");
7852   verifyFormat("SomeType MemberFunction(const Deleted &) & = delete;");
7853   verifyFormat("SomeType MemberFunction(const Deleted &) && = delete;");
7854   verifyFormat("Deleted &operator=(const Deleted &) &;");
7855   verifyFormat("Deleted &operator=(const Deleted &) &&;");
7856   verifyFormat("SomeType MemberFunction(const Deleted &) &;");
7857   verifyFormat("SomeType MemberFunction(const Deleted &) &&;");
7858   verifyFormat("SomeType MemberFunction(const Deleted &) && {}");
7859   verifyFormat("SomeType MemberFunction(const Deleted &) && final {}");
7860   verifyFormat("SomeType MemberFunction(const Deleted &) && override {}");
7861   verifyFormat("void Fn(T const &) const &;");
7862   verifyFormat("void Fn(T const volatile &&) const volatile &&;");
7863   verifyFormat("template <typename T>\n"
7864                "void F(T) && = delete;",
7865                getGoogleStyle());
7866 
7867   FormatStyle AlignLeft = getLLVMStyle();
7868   AlignLeft.PointerAlignment = FormatStyle::PAS_Left;
7869   verifyFormat("void A::b() && {}", AlignLeft);
7870   verifyFormat("Deleted& operator=(const Deleted&) & = default;", AlignLeft);
7871   verifyFormat("SomeType MemberFunction(const Deleted&) & = delete;",
7872                AlignLeft);
7873   verifyFormat("Deleted& operator=(const Deleted&) &;", AlignLeft);
7874   verifyFormat("SomeType MemberFunction(const Deleted&) &;", AlignLeft);
7875   verifyFormat("auto Function(T t) & -> void {}", AlignLeft);
7876   verifyFormat("auto Function(T... t) & -> void {}", AlignLeft);
7877   verifyFormat("auto Function(T) & -> void {}", AlignLeft);
7878   verifyFormat("auto Function(T) & -> void;", AlignLeft);
7879   verifyFormat("void Fn(T const&) const&;", AlignLeft);
7880   verifyFormat("void Fn(T const volatile&&) const volatile&&;", AlignLeft);
7881 
7882   FormatStyle Spaces = getLLVMStyle();
7883   Spaces.SpacesInCStyleCastParentheses = true;
7884   verifyFormat("Deleted &operator=(const Deleted &) & = default;", Spaces);
7885   verifyFormat("SomeType MemberFunction(const Deleted &) & = delete;", Spaces);
7886   verifyFormat("Deleted &operator=(const Deleted &) &;", Spaces);
7887   verifyFormat("SomeType MemberFunction(const Deleted &) &;", Spaces);
7888 
7889   Spaces.SpacesInCStyleCastParentheses = false;
7890   Spaces.SpacesInParentheses = true;
7891   verifyFormat("Deleted &operator=( const Deleted & ) & = default;", Spaces);
7892   verifyFormat("SomeType MemberFunction( const Deleted & ) & = delete;",
7893                Spaces);
7894   verifyFormat("Deleted &operator=( const Deleted & ) &;", Spaces);
7895   verifyFormat("SomeType MemberFunction( const Deleted & ) &;", Spaces);
7896 
7897   FormatStyle BreakTemplate = getLLVMStyle();
7898   BreakTemplate.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
7899 
7900   verifyFormat("struct f {\n"
7901                "  template <class T>\n"
7902                "  int &foo(const std::string &str) &noexcept {}\n"
7903                "};",
7904                BreakTemplate);
7905 
7906   verifyFormat("struct f {\n"
7907                "  template <class T>\n"
7908                "  int &foo(const std::string &str) &&noexcept {}\n"
7909                "};",
7910                BreakTemplate);
7911 
7912   verifyFormat("struct f {\n"
7913                "  template <class T>\n"
7914                "  int &foo(const std::string &str) const &noexcept {}\n"
7915                "};",
7916                BreakTemplate);
7917 
7918   verifyFormat("struct f {\n"
7919                "  template <class T>\n"
7920                "  int &foo(const std::string &str) const &noexcept {}\n"
7921                "};",
7922                BreakTemplate);
7923 
7924   verifyFormat("struct f {\n"
7925                "  template <class T>\n"
7926                "  auto foo(const std::string &str) &&noexcept -> int & {}\n"
7927                "};",
7928                BreakTemplate);
7929 
7930   FormatStyle AlignLeftBreakTemplate = getLLVMStyle();
7931   AlignLeftBreakTemplate.AlwaysBreakTemplateDeclarations =
7932       FormatStyle::BTDS_Yes;
7933   AlignLeftBreakTemplate.PointerAlignment = FormatStyle::PAS_Left;
7934 
7935   verifyFormat("struct f {\n"
7936                "  template <class T>\n"
7937                "  int& foo(const std::string& str) & noexcept {}\n"
7938                "};",
7939                AlignLeftBreakTemplate);
7940 
7941   verifyFormat("struct f {\n"
7942                "  template <class T>\n"
7943                "  int& foo(const std::string& str) && noexcept {}\n"
7944                "};",
7945                AlignLeftBreakTemplate);
7946 
7947   verifyFormat("struct f {\n"
7948                "  template <class T>\n"
7949                "  int& foo(const std::string& str) const& noexcept {}\n"
7950                "};",
7951                AlignLeftBreakTemplate);
7952 
7953   verifyFormat("struct f {\n"
7954                "  template <class T>\n"
7955                "  int& foo(const std::string& str) const&& noexcept {}\n"
7956                "};",
7957                AlignLeftBreakTemplate);
7958 
7959   verifyFormat("struct f {\n"
7960                "  template <class T>\n"
7961                "  auto foo(const std::string& str) && noexcept -> int& {}\n"
7962                "};",
7963                AlignLeftBreakTemplate);
7964 
7965   // The `&` in `Type&` should not be confused with a trailing `&` of
7966   // DEPRECATED(reason) member function.
7967   verifyFormat("struct f {\n"
7968                "  template <class T>\n"
7969                "  DEPRECATED(reason)\n"
7970                "  Type &foo(arguments) {}\n"
7971                "};",
7972                BreakTemplate);
7973 
7974   verifyFormat("struct f {\n"
7975                "  template <class T>\n"
7976                "  DEPRECATED(reason)\n"
7977                "  Type& foo(arguments) {}\n"
7978                "};",
7979                AlignLeftBreakTemplate);
7980 
7981   verifyFormat("void (*foopt)(int) = &func;");
7982 }
7983 
7984 TEST_F(FormatTest, UnderstandsNewAndDelete) {
7985   verifyFormat("void f() {\n"
7986                "  A *a = new A;\n"
7987                "  A *a = new (placement) A;\n"
7988                "  delete a;\n"
7989                "  delete (A *)a;\n"
7990                "}");
7991   verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
7992                "    typename aaaaaaaaaaaaaaaaaaaaaaaa();");
7993   verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
7994                "    new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n"
7995                "        typename aaaaaaaaaaaaaaaaaaaaaaaa();");
7996   verifyFormat("delete[] h->p;");
7997 }
7998 
7999 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
8000   verifyFormat("int *f(int *a) {}");
8001   verifyFormat("int main(int argc, char **argv) {}");
8002   verifyFormat("Test::Test(int b) : a(b * b) {}");
8003   verifyIndependentOfContext("f(a, *a);");
8004   verifyFormat("void g() { f(*a); }");
8005   verifyIndependentOfContext("int a = b * 10;");
8006   verifyIndependentOfContext("int a = 10 * b;");
8007   verifyIndependentOfContext("int a = b * c;");
8008   verifyIndependentOfContext("int a += b * c;");
8009   verifyIndependentOfContext("int a -= b * c;");
8010   verifyIndependentOfContext("int a *= b * c;");
8011   verifyIndependentOfContext("int a /= b * c;");
8012   verifyIndependentOfContext("int a = *b;");
8013   verifyIndependentOfContext("int a = *b * c;");
8014   verifyIndependentOfContext("int a = b * *c;");
8015   verifyIndependentOfContext("int a = b * (10);");
8016   verifyIndependentOfContext("S << b * (10);");
8017   verifyIndependentOfContext("return 10 * b;");
8018   verifyIndependentOfContext("return *b * *c;");
8019   verifyIndependentOfContext("return a & ~b;");
8020   verifyIndependentOfContext("f(b ? *c : *d);");
8021   verifyIndependentOfContext("int a = b ? *c : *d;");
8022   verifyIndependentOfContext("*b = a;");
8023   verifyIndependentOfContext("a * ~b;");
8024   verifyIndependentOfContext("a * !b;");
8025   verifyIndependentOfContext("a * +b;");
8026   verifyIndependentOfContext("a * -b;");
8027   verifyIndependentOfContext("a * ++b;");
8028   verifyIndependentOfContext("a * --b;");
8029   verifyIndependentOfContext("a[4] * b;");
8030   verifyIndependentOfContext("a[a * a] = 1;");
8031   verifyIndependentOfContext("f() * b;");
8032   verifyIndependentOfContext("a * [self dostuff];");
8033   verifyIndependentOfContext("int x = a * (a + b);");
8034   verifyIndependentOfContext("(a *)(a + b);");
8035   verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;");
8036   verifyIndependentOfContext("int *pa = (int *)&a;");
8037   verifyIndependentOfContext("return sizeof(int **);");
8038   verifyIndependentOfContext("return sizeof(int ******);");
8039   verifyIndependentOfContext("return (int **&)a;");
8040   verifyIndependentOfContext("f((*PointerToArray)[10]);");
8041   verifyFormat("void f(Type (*parameter)[10]) {}");
8042   verifyFormat("void f(Type (&parameter)[10]) {}");
8043   verifyGoogleFormat("return sizeof(int**);");
8044   verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
8045   verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
8046   verifyFormat("auto a = [](int **&, int ***) {};");
8047   verifyFormat("auto PointerBinding = [](const char *S) {};");
8048   verifyFormat("typedef typeof(int(int, int)) *MyFunc;");
8049   verifyFormat("[](const decltype(*a) &value) {}");
8050   verifyFormat("[](const typeof(*a) &value) {}");
8051   verifyFormat("[](const _Atomic(a *) &value) {}");
8052   verifyFormat("[](const __underlying_type(a) &value) {}");
8053   verifyFormat("decltype(a * b) F();");
8054   verifyFormat("typeof(a * b) F();");
8055   verifyFormat("#define MACRO() [](A *a) { return 1; }");
8056   verifyFormat("Constructor() : member([](A *a, B *b) {}) {}");
8057   verifyIndependentOfContext("typedef void (*f)(int *a);");
8058   verifyIndependentOfContext("int i{a * b};");
8059   verifyIndependentOfContext("aaa && aaa->f();");
8060   verifyIndependentOfContext("int x = ~*p;");
8061   verifyFormat("Constructor() : a(a), area(width * height) {}");
8062   verifyFormat("Constructor() : a(a), area(a, width * height) {}");
8063   verifyGoogleFormat("MACRO Constructor(const int& i) : a(a), b(b) {}");
8064   verifyFormat("void f() { f(a, c * d); }");
8065   verifyFormat("void f() { f(new a(), c * d); }");
8066   verifyFormat("void f(const MyOverride &override);");
8067   verifyFormat("void f(const MyFinal &final);");
8068   verifyIndependentOfContext("bool a = f() && override.f();");
8069   verifyIndependentOfContext("bool a = f() && final.f();");
8070 
8071   verifyIndependentOfContext("InvalidRegions[*R] = 0;");
8072 
8073   verifyIndependentOfContext("A<int *> a;");
8074   verifyIndependentOfContext("A<int **> a;");
8075   verifyIndependentOfContext("A<int *, int *> a;");
8076   verifyIndependentOfContext("A<int *[]> a;");
8077   verifyIndependentOfContext(
8078       "const char *const p = reinterpret_cast<const char *const>(q);");
8079   verifyIndependentOfContext("A<int **, int **> a;");
8080   verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);");
8081   verifyFormat("for (char **a = b; *a; ++a) {\n}");
8082   verifyFormat("for (; a && b;) {\n}");
8083   verifyFormat("bool foo = true && [] { return false; }();");
8084 
8085   verifyFormat(
8086       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8087       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8088 
8089   verifyGoogleFormat("int const* a = &b;");
8090   verifyGoogleFormat("**outparam = 1;");
8091   verifyGoogleFormat("*outparam = a * b;");
8092   verifyGoogleFormat("int main(int argc, char** argv) {}");
8093   verifyGoogleFormat("A<int*> a;");
8094   verifyGoogleFormat("A<int**> a;");
8095   verifyGoogleFormat("A<int*, int*> a;");
8096   verifyGoogleFormat("A<int**, int**> a;");
8097   verifyGoogleFormat("f(b ? *c : *d);");
8098   verifyGoogleFormat("int a = b ? *c : *d;");
8099   verifyGoogleFormat("Type* t = **x;");
8100   verifyGoogleFormat("Type* t = *++*x;");
8101   verifyGoogleFormat("*++*x;");
8102   verifyGoogleFormat("Type* t = const_cast<T*>(&*x);");
8103   verifyGoogleFormat("Type* t = x++ * y;");
8104   verifyGoogleFormat(
8105       "const char* const p = reinterpret_cast<const char* const>(q);");
8106   verifyGoogleFormat("void f(int i = 0, SomeType** temps = NULL);");
8107   verifyGoogleFormat("void f(Bar* a = nullptr, Bar* b);");
8108   verifyGoogleFormat("template <typename T>\n"
8109                      "void f(int i = 0, SomeType** temps = NULL);");
8110 
8111   FormatStyle Left = getLLVMStyle();
8112   Left.PointerAlignment = FormatStyle::PAS_Left;
8113   verifyFormat("x = *a(x) = *a(y);", Left);
8114   verifyFormat("for (;; *a = b) {\n}", Left);
8115   verifyFormat("return *this += 1;", Left);
8116   verifyFormat("throw *x;", Left);
8117   verifyFormat("delete *x;", Left);
8118   verifyFormat("typedef typeof(int(int, int))* MyFuncPtr;", Left);
8119   verifyFormat("[](const decltype(*a)* ptr) {}", Left);
8120   verifyFormat("[](const typeof(*a)* ptr) {}", Left);
8121   verifyFormat("[](const _Atomic(a*)* ptr) {}", Left);
8122   verifyFormat("[](const __underlying_type(a)* ptr) {}", Left);
8123   verifyFormat("typedef typeof /*comment*/ (int(int, int))* MyFuncPtr;", Left);
8124   verifyFormat("auto x(A&&, B&&, C&&) -> D;", Left);
8125   verifyFormat("auto x = [](A&&, B&&, C&&) -> D {};", Left);
8126   verifyFormat("template <class T> X(T&&, T&&, T&&) -> X<T>;", Left);
8127 
8128   verifyIndependentOfContext("a = *(x + y);");
8129   verifyIndependentOfContext("a = &(x + y);");
8130   verifyIndependentOfContext("*(x + y).call();");
8131   verifyIndependentOfContext("&(x + y)->call();");
8132   verifyFormat("void f() { &(*I).first; }");
8133 
8134   verifyIndependentOfContext("f(b * /* confusing comment */ ++c);");
8135   verifyFormat(
8136       "int *MyValues = {\n"
8137       "    *A, // Operator detection might be confused by the '{'\n"
8138       "    *BB // Operator detection might be confused by previous comment\n"
8139       "};");
8140 
8141   verifyIndependentOfContext("if (int *a = &b)");
8142   verifyIndependentOfContext("if (int &a = *b)");
8143   verifyIndependentOfContext("if (a & b[i])");
8144   verifyIndependentOfContext("if constexpr (a & b[i])");
8145   verifyIndependentOfContext("if CONSTEXPR (a & b[i])");
8146   verifyIndependentOfContext("if (a * (b * c))");
8147   verifyIndependentOfContext("if constexpr (a * (b * c))");
8148   verifyIndependentOfContext("if CONSTEXPR (a * (b * c))");
8149   verifyIndependentOfContext("if (a::b::c::d & b[i])");
8150   verifyIndependentOfContext("if (*b[i])");
8151   verifyIndependentOfContext("if (int *a = (&b))");
8152   verifyIndependentOfContext("while (int *a = &b)");
8153   verifyIndependentOfContext("while (a * (b * c))");
8154   verifyIndependentOfContext("size = sizeof *a;");
8155   verifyIndependentOfContext("if (a && (b = c))");
8156   verifyFormat("void f() {\n"
8157                "  for (const int &v : Values) {\n"
8158                "  }\n"
8159                "}");
8160   verifyFormat("for (int i = a * a; i < 10; ++i) {\n}");
8161   verifyFormat("for (int i = 0; i < a * a; ++i) {\n}");
8162   verifyGoogleFormat("for (int i = 0; i * 2 < z; i *= 2) {\n}");
8163 
8164   verifyFormat("#define A (!a * b)");
8165   verifyFormat("#define MACRO     \\\n"
8166                "  int *i = a * b; \\\n"
8167                "  void f(a *b);",
8168                getLLVMStyleWithColumns(19));
8169 
8170   verifyIndependentOfContext("A = new SomeType *[Length];");
8171   verifyIndependentOfContext("A = new SomeType *[Length]();");
8172   verifyIndependentOfContext("T **t = new T *;");
8173   verifyIndependentOfContext("T **t = new T *();");
8174   verifyGoogleFormat("A = new SomeType*[Length]();");
8175   verifyGoogleFormat("A = new SomeType*[Length];");
8176   verifyGoogleFormat("T** t = new T*;");
8177   verifyGoogleFormat("T** t = new T*();");
8178 
8179   verifyFormat("STATIC_ASSERT((a & b) == 0);");
8180   verifyFormat("STATIC_ASSERT(0 == (a & b));");
8181   verifyFormat("template <bool a, bool b> "
8182                "typename t::if<x && y>::type f() {}");
8183   verifyFormat("template <int *y> f() {}");
8184   verifyFormat("vector<int *> v;");
8185   verifyFormat("vector<int *const> v;");
8186   verifyFormat("vector<int *const **const *> v;");
8187   verifyFormat("vector<int *volatile> v;");
8188   verifyFormat("vector<a *_Nonnull> v;");
8189   verifyFormat("vector<a *_Nullable> v;");
8190   verifyFormat("vector<a *_Null_unspecified> v;");
8191   verifyFormat("vector<a *__ptr32> v;");
8192   verifyFormat("vector<a *__ptr64> v;");
8193   verifyFormat("vector<a *__capability> v;");
8194   FormatStyle TypeMacros = getLLVMStyle();
8195   TypeMacros.TypenameMacros = {"LIST"};
8196   verifyFormat("vector<LIST(uint64_t)> v;", TypeMacros);
8197   verifyFormat("vector<LIST(uint64_t) *> v;", TypeMacros);
8198   verifyFormat("vector<LIST(uint64_t) **> v;", TypeMacros);
8199   verifyFormat("vector<LIST(uint64_t) *attr> v;", TypeMacros);
8200   verifyFormat("vector<A(uint64_t) * attr> v;", TypeMacros); // multiplication
8201 
8202   FormatStyle CustomQualifier = getLLVMStyle();
8203   // Add indentifers that should not be parsed as a qualifier by default.
8204   CustomQualifier.AttributeMacros.push_back("__my_qualifier");
8205   CustomQualifier.AttributeMacros.push_back("_My_qualifier");
8206   CustomQualifier.AttributeMacros.push_back("my_other_qualifier");
8207   verifyFormat("vector<a * __my_qualifier> parse_as_multiply;");
8208   verifyFormat("vector<a *__my_qualifier> v;", CustomQualifier);
8209   verifyFormat("vector<a * _My_qualifier> parse_as_multiply;");
8210   verifyFormat("vector<a *_My_qualifier> v;", CustomQualifier);
8211   verifyFormat("vector<a * my_other_qualifier> parse_as_multiply;");
8212   verifyFormat("vector<a *my_other_qualifier> v;", CustomQualifier);
8213   verifyFormat("vector<a * _NotAQualifier> v;");
8214   verifyFormat("vector<a * __not_a_qualifier> v;");
8215   verifyFormat("vector<a * b> v;");
8216   verifyFormat("foo<b && false>();");
8217   verifyFormat("foo<b & 1>();");
8218   verifyFormat("decltype(*::std::declval<const T &>()) void F();");
8219   verifyFormat("typeof(*::std::declval<const T &>()) void F();");
8220   verifyFormat("_Atomic(*::std::declval<const T &>()) void F();");
8221   verifyFormat("__underlying_type(*::std::declval<const T &>()) void F();");
8222   verifyFormat(
8223       "template <class T, class = typename std::enable_if<\n"
8224       "                       std::is_integral<T>::value &&\n"
8225       "                       (sizeof(T) > 1 || sizeof(T) < 8)>::type>\n"
8226       "void F();",
8227       getLLVMStyleWithColumns(70));
8228   verifyFormat("template <class T,\n"
8229                "          class = typename std::enable_if<\n"
8230                "              std::is_integral<T>::value &&\n"
8231                "              (sizeof(T) > 1 || sizeof(T) < 8)>::type,\n"
8232                "          class U>\n"
8233                "void F();",
8234                getLLVMStyleWithColumns(70));
8235   verifyFormat(
8236       "template <class T,\n"
8237       "          class = typename ::std::enable_if<\n"
8238       "              ::std::is_array<T>{} && ::std::is_array<T>{}>::type>\n"
8239       "void F();",
8240       getGoogleStyleWithColumns(68));
8241 
8242   verifyIndependentOfContext("MACRO(int *i);");
8243   verifyIndependentOfContext("MACRO(auto *a);");
8244   verifyIndependentOfContext("MACRO(const A *a);");
8245   verifyIndependentOfContext("MACRO(_Atomic(A) *a);");
8246   verifyIndependentOfContext("MACRO(decltype(A) *a);");
8247   verifyIndependentOfContext("MACRO(typeof(A) *a);");
8248   verifyIndependentOfContext("MACRO(__underlying_type(A) *a);");
8249   verifyIndependentOfContext("MACRO(A *const a);");
8250   verifyIndependentOfContext("MACRO(A *restrict a);");
8251   verifyIndependentOfContext("MACRO(A *__restrict__ a);");
8252   verifyIndependentOfContext("MACRO(A *__restrict a);");
8253   verifyIndependentOfContext("MACRO(A *volatile a);");
8254   verifyIndependentOfContext("MACRO(A *__volatile a);");
8255   verifyIndependentOfContext("MACRO(A *__volatile__ a);");
8256   verifyIndependentOfContext("MACRO(A *_Nonnull a);");
8257   verifyIndependentOfContext("MACRO(A *_Nullable a);");
8258   verifyIndependentOfContext("MACRO(A *_Null_unspecified a);");
8259   verifyIndependentOfContext("MACRO(A *__attribute__((foo)) a);");
8260   verifyIndependentOfContext("MACRO(A *__attribute((foo)) a);");
8261   verifyIndependentOfContext("MACRO(A *[[clang::attr]] a);");
8262   verifyIndependentOfContext("MACRO(A *[[clang::attr(\"foo\")]] a);");
8263   verifyIndependentOfContext("MACRO(A *__ptr32 a);");
8264   verifyIndependentOfContext("MACRO(A *__ptr64 a);");
8265   verifyIndependentOfContext("MACRO(A *__capability);");
8266   verifyIndependentOfContext("MACRO(A &__capability);");
8267   verifyFormat("MACRO(A *__my_qualifier);");               // type declaration
8268   verifyFormat("void f() { MACRO(A * __my_qualifier); }"); // multiplication
8269   // If we add __my_qualifier to AttributeMacros it should always be parsed as
8270   // a type declaration:
8271   verifyFormat("MACRO(A *__my_qualifier);", CustomQualifier);
8272   verifyFormat("void f() { MACRO(A *__my_qualifier); }", CustomQualifier);
8273   // Also check that TypenameMacros prevents parsing it as multiplication:
8274   verifyIndependentOfContext("MACRO(LIST(uint64_t) * a);"); // multiplication
8275   verifyIndependentOfContext("MACRO(LIST(uint64_t) *a);", TypeMacros); // type
8276 
8277   verifyIndependentOfContext("MACRO('0' <= c && c <= '9');");
8278   verifyFormat("void f() { f(float{1}, a * a); }");
8279   // FIXME: Is there a way to make this work?
8280   // verifyIndependentOfContext("MACRO(A *a);");
8281   verifyFormat("MACRO(A &B);");
8282   verifyFormat("MACRO(A *B);");
8283   verifyFormat("void f() { MACRO(A * B); }");
8284   verifyFormat("void f() { MACRO(A & B); }");
8285 
8286   // This lambda was mis-formatted after D88956 (treating it as a binop):
8287   verifyFormat("auto x = [](const decltype(x) &ptr) {};");
8288   verifyFormat("auto x = [](const decltype(x) *ptr) {};");
8289   verifyFormat("#define lambda [](const decltype(x) &ptr) {}");
8290   verifyFormat("#define lambda [](const decltype(x) *ptr) {}");
8291 
8292   verifyFormat("DatumHandle const *operator->() const { return input_; }");
8293   verifyFormat("return options != nullptr && operator==(*options);");
8294 
8295   EXPECT_EQ("#define OP(x)                                    \\\n"
8296             "  ostream &operator<<(ostream &s, const A &a) {  \\\n"
8297             "    return s << a.DebugString();                 \\\n"
8298             "  }",
8299             format("#define OP(x) \\\n"
8300                    "  ostream &operator<<(ostream &s, const A &a) { \\\n"
8301                    "    return s << a.DebugString(); \\\n"
8302                    "  }",
8303                    getLLVMStyleWithColumns(50)));
8304 
8305   // FIXME: We cannot handle this case yet; we might be able to figure out that
8306   // foo<x> d > v; doesn't make sense.
8307   verifyFormat("foo<a<b && c> d> v;");
8308 
8309   FormatStyle PointerMiddle = getLLVMStyle();
8310   PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle;
8311   verifyFormat("delete *x;", PointerMiddle);
8312   verifyFormat("int * x;", PointerMiddle);
8313   verifyFormat("int *[] x;", PointerMiddle);
8314   verifyFormat("template <int * y> f() {}", PointerMiddle);
8315   verifyFormat("int * f(int * a) {}", PointerMiddle);
8316   verifyFormat("int main(int argc, char ** argv) {}", PointerMiddle);
8317   verifyFormat("Test::Test(int b) : a(b * b) {}", PointerMiddle);
8318   verifyFormat("A<int *> a;", PointerMiddle);
8319   verifyFormat("A<int **> a;", PointerMiddle);
8320   verifyFormat("A<int *, int *> a;", PointerMiddle);
8321   verifyFormat("A<int *[]> a;", PointerMiddle);
8322   verifyFormat("A = new SomeType *[Length]();", PointerMiddle);
8323   verifyFormat("A = new SomeType *[Length];", PointerMiddle);
8324   verifyFormat("T ** t = new T *;", PointerMiddle);
8325 
8326   // Member function reference qualifiers aren't binary operators.
8327   verifyFormat("string // break\n"
8328                "operator()() & {}");
8329   verifyFormat("string // break\n"
8330                "operator()() && {}");
8331   verifyGoogleFormat("template <typename T>\n"
8332                      "auto x() & -> int {}");
8333 }
8334 
8335 TEST_F(FormatTest, UnderstandsAttributes) {
8336   verifyFormat("SomeType s __attribute__((unused)) (InitValue);");
8337   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((unused))\n"
8338                "aaaaaaaaaaaaaaaaaaaaaaa(int i);");
8339   FormatStyle AfterType = getLLVMStyle();
8340   AfterType.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
8341   verifyFormat("__attribute__((nodebug)) void\n"
8342                "foo() {}\n",
8343                AfterType);
8344   verifyFormat("__unused void\n"
8345                "foo() {}",
8346                AfterType);
8347 
8348   FormatStyle CustomAttrs = getLLVMStyle();
8349   CustomAttrs.AttributeMacros.push_back("__unused");
8350   CustomAttrs.AttributeMacros.push_back("__attr1");
8351   CustomAttrs.AttributeMacros.push_back("__attr2");
8352   CustomAttrs.AttributeMacros.push_back("no_underscore_attr");
8353   verifyFormat("vector<SomeType *__attribute((foo))> v;");
8354   verifyFormat("vector<SomeType *__attribute__((foo))> v;");
8355   verifyFormat("vector<SomeType * __not_attribute__((foo))> v;");
8356   // Check that it is parsed as a multiplication without AttributeMacros and
8357   // as a pointer qualifier when we add __attr1/__attr2 to AttributeMacros.
8358   verifyFormat("vector<SomeType * __attr1> v;");
8359   verifyFormat("vector<SomeType __attr1 *> v;");
8360   verifyFormat("vector<SomeType __attr1 *const> v;");
8361   verifyFormat("vector<SomeType __attr1 * __attr2> v;");
8362   verifyFormat("vector<SomeType *__attr1> v;", CustomAttrs);
8363   verifyFormat("vector<SomeType *__attr2> v;", CustomAttrs);
8364   verifyFormat("vector<SomeType *no_underscore_attr> v;", CustomAttrs);
8365   verifyFormat("vector<SomeType __attr1 *> v;", CustomAttrs);
8366   verifyFormat("vector<SomeType __attr1 *const> v;", CustomAttrs);
8367   verifyFormat("vector<SomeType __attr1 *__attr2> v;", CustomAttrs);
8368   verifyFormat("vector<SomeType __attr1 *no_underscore_attr> v;", CustomAttrs);
8369 
8370   // Check that these are not parsed as function declarations:
8371   CustomAttrs.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
8372   CustomAttrs.BreakBeforeBraces = FormatStyle::BS_Allman;
8373   verifyFormat("SomeType s(InitValue);", CustomAttrs);
8374   verifyFormat("SomeType s{InitValue};", CustomAttrs);
8375   verifyFormat("SomeType *__unused s(InitValue);", CustomAttrs);
8376   verifyFormat("SomeType *__unused s{InitValue};", CustomAttrs);
8377   verifyFormat("SomeType s __unused(InitValue);", CustomAttrs);
8378   verifyFormat("SomeType s __unused{InitValue};", CustomAttrs);
8379   verifyFormat("SomeType *__capability s(InitValue);", CustomAttrs);
8380   verifyFormat("SomeType *__capability s{InitValue};", CustomAttrs);
8381 }
8382 
8383 TEST_F(FormatTest, UnderstandsPointerQualifiersInCast) {
8384   // Check that qualifiers on pointers don't break parsing of casts.
8385   verifyFormat("x = (foo *const)*v;");
8386   verifyFormat("x = (foo *volatile)*v;");
8387   verifyFormat("x = (foo *restrict)*v;");
8388   verifyFormat("x = (foo *__attribute__((foo)))*v;");
8389   verifyFormat("x = (foo *_Nonnull)*v;");
8390   verifyFormat("x = (foo *_Nullable)*v;");
8391   verifyFormat("x = (foo *_Null_unspecified)*v;");
8392   verifyFormat("x = (foo *_Nonnull)*v;");
8393   verifyFormat("x = (foo *[[clang::attr]])*v;");
8394   verifyFormat("x = (foo *[[clang::attr(\"foo\")]])*v;");
8395   verifyFormat("x = (foo *__ptr32)*v;");
8396   verifyFormat("x = (foo *__ptr64)*v;");
8397   verifyFormat("x = (foo *__capability)*v;");
8398 
8399   // Check that we handle multiple trailing qualifiers and skip them all to
8400   // determine that the expression is a cast to a pointer type.
8401   FormatStyle LongPointerRight = getLLVMStyleWithColumns(999);
8402   FormatStyle LongPointerLeft = getLLVMStyleWithColumns(999);
8403   LongPointerLeft.PointerAlignment = FormatStyle::PAS_Left;
8404   StringRef AllQualifiers =
8405       "const volatile restrict __attribute__((foo)) _Nonnull _Null_unspecified "
8406       "_Nonnull [[clang::attr]] __ptr32 __ptr64 __capability";
8407   verifyFormat(("x = (foo *" + AllQualifiers + ")*v;").str(), LongPointerRight);
8408   verifyFormat(("x = (foo* " + AllQualifiers + ")*v;").str(), LongPointerLeft);
8409 
8410   // Also check that address-of is not parsed as a binary bitwise-and:
8411   verifyFormat("x = (foo *const)&v;");
8412   verifyFormat(("x = (foo *" + AllQualifiers + ")&v;").str(), LongPointerRight);
8413   verifyFormat(("x = (foo* " + AllQualifiers + ")&v;").str(), LongPointerLeft);
8414 
8415   // Check custom qualifiers:
8416   FormatStyle CustomQualifier = getLLVMStyleWithColumns(999);
8417   CustomQualifier.AttributeMacros.push_back("__my_qualifier");
8418   verifyFormat("x = (foo * __my_qualifier) * v;"); // not parsed as qualifier.
8419   verifyFormat("x = (foo *__my_qualifier)*v;", CustomQualifier);
8420   verifyFormat(("x = (foo *" + AllQualifiers + " __my_qualifier)*v;").str(),
8421                CustomQualifier);
8422   verifyFormat(("x = (foo *" + AllQualifiers + " __my_qualifier)&v;").str(),
8423                CustomQualifier);
8424 
8425   // Check that unknown identifiers result in binary operator parsing:
8426   verifyFormat("x = (foo * __unknown_qualifier) * v;");
8427   verifyFormat("x = (foo * __unknown_qualifier) & v;");
8428 }
8429 
8430 TEST_F(FormatTest, UnderstandsSquareAttributes) {
8431   verifyFormat("SomeType s [[unused]] (InitValue);");
8432   verifyFormat("SomeType s [[gnu::unused]] (InitValue);");
8433   verifyFormat("SomeType s [[using gnu: unused]] (InitValue);");
8434   verifyFormat("[[gsl::suppress(\"clang-tidy-check-name\")]] void f() {}");
8435   verifyFormat("void f() [[deprecated(\"so sorry\")]];");
8436   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8437                "    [[unused]] aaaaaaaaaaaaaaaaaaaaaaa(int i);");
8438   verifyFormat("[[nodiscard]] bool f() { return false; }");
8439   verifyFormat("class [[nodiscard]] f {\npublic:\n  f() {}\n}");
8440   verifyFormat("class [[deprecated(\"so sorry\")]] f {\npublic:\n  f() {}\n}");
8441   verifyFormat("class [[gnu::unused]] f {\npublic:\n  f() {}\n}");
8442 
8443   // Make sure we do not mistake attributes for array subscripts.
8444   verifyFormat("int a() {}\n"
8445                "[[unused]] int b() {}\n");
8446   verifyFormat("NSArray *arr;\n"
8447                "arr[[Foo() bar]];");
8448 
8449   // On the other hand, we still need to correctly find array subscripts.
8450   verifyFormat("int a = std::vector<int>{1, 2, 3}[0];");
8451 
8452   // Make sure that we do not mistake Objective-C method inside array literals
8453   // as attributes, even if those method names are also keywords.
8454   verifyFormat("@[ [foo bar] ];");
8455   verifyFormat("@[ [NSArray class] ];");
8456   verifyFormat("@[ [foo enum] ];");
8457 
8458   verifyFormat("template <typename T> [[nodiscard]] int a() { return 1; }");
8459 
8460   // Make sure we do not parse attributes as lambda introducers.
8461   FormatStyle MultiLineFunctions = getLLVMStyle();
8462   MultiLineFunctions.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
8463   verifyFormat("[[unused]] int b() {\n"
8464                "  return 42;\n"
8465                "}\n",
8466                MultiLineFunctions);
8467 }
8468 
8469 TEST_F(FormatTest, AttributeClass) {
8470   FormatStyle Style = getChromiumStyle(FormatStyle::LK_Cpp);
8471   verifyFormat("class S {\n"
8472                "  S(S&&) = default;\n"
8473                "};",
8474                Style);
8475   verifyFormat("class [[nodiscard]] S {\n"
8476                "  S(S&&) = default;\n"
8477                "};",
8478                Style);
8479   verifyFormat("class __attribute((maybeunused)) S {\n"
8480                "  S(S&&) = default;\n"
8481                "};",
8482                Style);
8483   verifyFormat("struct S {\n"
8484                "  S(S&&) = default;\n"
8485                "};",
8486                Style);
8487   verifyFormat("struct [[nodiscard]] S {\n"
8488                "  S(S&&) = default;\n"
8489                "};",
8490                Style);
8491 }
8492 
8493 TEST_F(FormatTest, AttributesAfterMacro) {
8494   FormatStyle Style = getLLVMStyle();
8495   verifyFormat("MACRO;\n"
8496                "__attribute__((maybe_unused)) int foo() {\n"
8497                "  //...\n"
8498                "}");
8499 
8500   verifyFormat("MACRO;\n"
8501                "[[nodiscard]] int foo() {\n"
8502                "  //...\n"
8503                "}");
8504 
8505   EXPECT_EQ("MACRO\n\n"
8506             "__attribute__((maybe_unused)) int foo() {\n"
8507             "  //...\n"
8508             "}",
8509             format("MACRO\n\n"
8510                    "__attribute__((maybe_unused)) int foo() {\n"
8511                    "  //...\n"
8512                    "}"));
8513 
8514   EXPECT_EQ("MACRO\n\n"
8515             "[[nodiscard]] int foo() {\n"
8516             "  //...\n"
8517             "}",
8518             format("MACRO\n\n"
8519                    "[[nodiscard]] int foo() {\n"
8520                    "  //...\n"
8521                    "}"));
8522 }
8523 
8524 TEST_F(FormatTest, AttributePenaltyBreaking) {
8525   FormatStyle Style = getLLVMStyle();
8526   verifyFormat("void ABCDEFGH::ABCDEFGHIJKLMN(\n"
8527                "    [[maybe_unused]] const shared_ptr<ALongTypeName> &C d) {}",
8528                Style);
8529   verifyFormat("void ABCDEFGH::ABCDEFGHIJK(\n"
8530                "    [[maybe_unused]] const shared_ptr<ALongTypeName> &C d) {}",
8531                Style);
8532   verifyFormat("void ABCDEFGH::ABCDEFGH([[maybe_unused]] const "
8533                "shared_ptr<ALongTypeName> &C d) {\n}",
8534                Style);
8535 }
8536 
8537 TEST_F(FormatTest, UnderstandsEllipsis) {
8538   FormatStyle Style = getLLVMStyle();
8539   verifyFormat("int printf(const char *fmt, ...);");
8540   verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }");
8541   verifyFormat("template <class... Ts> void Foo(Ts *...ts) {}");
8542 
8543   verifyFormat("template <int *...PP> a;", Style);
8544 
8545   Style.PointerAlignment = FormatStyle::PAS_Left;
8546   verifyFormat("template <class... Ts> void Foo(Ts*... ts) {}", Style);
8547 
8548   verifyFormat("template <int*... PP> a;", Style);
8549 
8550   Style.PointerAlignment = FormatStyle::PAS_Middle;
8551   verifyFormat("template <int *... PP> a;", Style);
8552 }
8553 
8554 TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) {
8555   EXPECT_EQ("int *a;\n"
8556             "int *a;\n"
8557             "int *a;",
8558             format("int *a;\n"
8559                    "int* a;\n"
8560                    "int *a;",
8561                    getGoogleStyle()));
8562   EXPECT_EQ("int* a;\n"
8563             "int* a;\n"
8564             "int* a;",
8565             format("int* a;\n"
8566                    "int* a;\n"
8567                    "int *a;",
8568                    getGoogleStyle()));
8569   EXPECT_EQ("int *a;\n"
8570             "int *a;\n"
8571             "int *a;",
8572             format("int *a;\n"
8573                    "int * a;\n"
8574                    "int *  a;",
8575                    getGoogleStyle()));
8576   EXPECT_EQ("auto x = [] {\n"
8577             "  int *a;\n"
8578             "  int *a;\n"
8579             "  int *a;\n"
8580             "};",
8581             format("auto x=[]{int *a;\n"
8582                    "int * a;\n"
8583                    "int *  a;};",
8584                    getGoogleStyle()));
8585 }
8586 
8587 TEST_F(FormatTest, UnderstandsRvalueReferences) {
8588   verifyFormat("int f(int &&a) {}");
8589   verifyFormat("int f(int a, char &&b) {}");
8590   verifyFormat("void f() { int &&a = b; }");
8591   verifyGoogleFormat("int f(int a, char&& b) {}");
8592   verifyGoogleFormat("void f() { int&& a = b; }");
8593 
8594   verifyIndependentOfContext("A<int &&> a;");
8595   verifyIndependentOfContext("A<int &&, int &&> a;");
8596   verifyGoogleFormat("A<int&&> a;");
8597   verifyGoogleFormat("A<int&&, int&&> a;");
8598 
8599   // Not rvalue references:
8600   verifyFormat("template <bool B, bool C> class A {\n"
8601                "  static_assert(B && C, \"Something is wrong\");\n"
8602                "};");
8603   verifyGoogleFormat("#define IF(a, b, c) if (a && (b == c))");
8604   verifyGoogleFormat("#define WHILE(a, b, c) while (a && (b == c))");
8605   verifyFormat("#define A(a, b) (a && b)");
8606 }
8607 
8608 TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) {
8609   verifyFormat("void f() {\n"
8610                "  x[aaaaaaaaa -\n"
8611                "    b] = 23;\n"
8612                "}",
8613                getLLVMStyleWithColumns(15));
8614 }
8615 
8616 TEST_F(FormatTest, FormatsCasts) {
8617   verifyFormat("Type *A = static_cast<Type *>(P);");
8618   verifyFormat("Type *A = (Type *)P;");
8619   verifyFormat("Type *A = (vector<Type *, int *>)P;");
8620   verifyFormat("int a = (int)(2.0f);");
8621   verifyFormat("int a = (int)2.0f;");
8622   verifyFormat("x[(int32)y];");
8623   verifyFormat("x = (int32)y;");
8624   verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)");
8625   verifyFormat("int a = (int)*b;");
8626   verifyFormat("int a = (int)2.0f;");
8627   verifyFormat("int a = (int)~0;");
8628   verifyFormat("int a = (int)++a;");
8629   verifyFormat("int a = (int)sizeof(int);");
8630   verifyFormat("int a = (int)+2;");
8631   verifyFormat("my_int a = (my_int)2.0f;");
8632   verifyFormat("my_int a = (my_int)sizeof(int);");
8633   verifyFormat("return (my_int)aaa;");
8634   verifyFormat("#define x ((int)-1)");
8635   verifyFormat("#define LENGTH(x, y) (x) - (y) + 1");
8636   verifyFormat("#define p(q) ((int *)&q)");
8637   verifyFormat("fn(a)(b) + 1;");
8638 
8639   verifyFormat("void f() { my_int a = (my_int)*b; }");
8640   verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }");
8641   verifyFormat("my_int a = (my_int)~0;");
8642   verifyFormat("my_int a = (my_int)++a;");
8643   verifyFormat("my_int a = (my_int)-2;");
8644   verifyFormat("my_int a = (my_int)1;");
8645   verifyFormat("my_int a = (my_int *)1;");
8646   verifyFormat("my_int a = (const my_int)-1;");
8647   verifyFormat("my_int a = (const my_int *)-1;");
8648   verifyFormat("my_int a = (my_int)(my_int)-1;");
8649   verifyFormat("my_int a = (ns::my_int)-2;");
8650   verifyFormat("case (my_int)ONE:");
8651   verifyFormat("auto x = (X)this;");
8652   // Casts in Obj-C style calls used to not be recognized as such.
8653   verifyFormat("int a = [(type*)[((type*)val) arg] arg];", getGoogleStyle());
8654 
8655   // FIXME: single value wrapped with paren will be treated as cast.
8656   verifyFormat("void f(int i = (kValue)*kMask) {}");
8657 
8658   verifyFormat("{ (void)F; }");
8659 
8660   // Don't break after a cast's
8661   verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
8662                "    (aaaaaaaaaaaaaaaaaaaaaaaaaa *)(aaaaaaaaaaaaaaaaaaaaaa +\n"
8663                "                                   bbbbbbbbbbbbbbbbbbbbbb);");
8664 
8665   // These are not casts.
8666   verifyFormat("void f(int *) {}");
8667   verifyFormat("f(foo)->b;");
8668   verifyFormat("f(foo).b;");
8669   verifyFormat("f(foo)(b);");
8670   verifyFormat("f(foo)[b];");
8671   verifyFormat("[](foo) { return 4; }(bar);");
8672   verifyFormat("(*funptr)(foo)[4];");
8673   verifyFormat("funptrs[4](foo)[4];");
8674   verifyFormat("void f(int *);");
8675   verifyFormat("void f(int *) = 0;");
8676   verifyFormat("void f(SmallVector<int>) {}");
8677   verifyFormat("void f(SmallVector<int>);");
8678   verifyFormat("void f(SmallVector<int>) = 0;");
8679   verifyFormat("void f(int i = (kA * kB) & kMask) {}");
8680   verifyFormat("int a = sizeof(int) * b;");
8681   verifyFormat("int a = alignof(int) * b;", getGoogleStyle());
8682   verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;");
8683   verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");");
8684   verifyFormat("aaaaa &operator=(const aaaaa &) LLVM_DELETED_FUNCTION;");
8685 
8686   // These are not casts, but at some point were confused with casts.
8687   verifyFormat("virtual void foo(int *) override;");
8688   verifyFormat("virtual void foo(char &) const;");
8689   verifyFormat("virtual void foo(int *a, char *) const;");
8690   verifyFormat("int a = sizeof(int *) + b;");
8691   verifyFormat("int a = alignof(int *) + b;", getGoogleStyle());
8692   verifyFormat("bool b = f(g<int>) && c;");
8693   verifyFormat("typedef void (*f)(int i) func;");
8694   verifyFormat("void operator++(int) noexcept;");
8695   verifyFormat("void operator++(int &) noexcept;");
8696   verifyFormat("void operator delete(void *, std::size_t, const std::nothrow_t "
8697                "&) noexcept;");
8698   verifyFormat(
8699       "void operator delete(std::size_t, const std::nothrow_t &) noexcept;");
8700   verifyFormat("void operator delete(const std::nothrow_t &) noexcept;");
8701   verifyFormat("void operator delete(std::nothrow_t &) noexcept;");
8702   verifyFormat("void operator delete(nothrow_t &) noexcept;");
8703   verifyFormat("void operator delete(foo &) noexcept;");
8704   verifyFormat("void operator delete(foo) noexcept;");
8705   verifyFormat("void operator delete(int) noexcept;");
8706   verifyFormat("void operator delete(int &) noexcept;");
8707   verifyFormat("void operator delete(int &) volatile noexcept;");
8708   verifyFormat("void operator delete(int &) const");
8709   verifyFormat("void operator delete(int &) = default");
8710   verifyFormat("void operator delete(int &) = delete");
8711   verifyFormat("void operator delete(int &) [[noreturn]]");
8712   verifyFormat("void operator delete(int &) throw();");
8713   verifyFormat("void operator delete(int &) throw(int);");
8714   verifyFormat("auto operator delete(int &) -> int;");
8715   verifyFormat("auto operator delete(int &) override");
8716   verifyFormat("auto operator delete(int &) final");
8717 
8718   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n"
8719                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
8720   // FIXME: The indentation here is not ideal.
8721   verifyFormat(
8722       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8723       "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)\n"
8724       "        [dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];");
8725 }
8726 
8727 TEST_F(FormatTest, FormatsFunctionTypes) {
8728   verifyFormat("A<bool()> a;");
8729   verifyFormat("A<SomeType()> a;");
8730   verifyFormat("A<void (*)(int, std::string)> a;");
8731   verifyFormat("A<void *(int)>;");
8732   verifyFormat("void *(*a)(int *, SomeType *);");
8733   verifyFormat("int (*func)(void *);");
8734   verifyFormat("void f() { int (*func)(void *); }");
8735   verifyFormat("template <class CallbackClass>\n"
8736                "using MyCallback = void (CallbackClass::*)(SomeObject *Data);");
8737 
8738   verifyGoogleFormat("A<void*(int*, SomeType*)>;");
8739   verifyGoogleFormat("void* (*a)(int);");
8740   verifyGoogleFormat(
8741       "template <class CallbackClass>\n"
8742       "using MyCallback = void (CallbackClass::*)(SomeObject* Data);");
8743 
8744   // Other constructs can look somewhat like function types:
8745   verifyFormat("A<sizeof(*x)> a;");
8746   verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)");
8747   verifyFormat("some_var = function(*some_pointer_var)[0];");
8748   verifyFormat("void f() { function(*some_pointer_var)[0] = 10; }");
8749   verifyFormat("int x = f(&h)();");
8750   verifyFormat("returnsFunction(&param1, &param2)(param);");
8751   verifyFormat("std::function<\n"
8752                "    LooooooooooongTemplatedType<\n"
8753                "        SomeType>*(\n"
8754                "        LooooooooooooooooongType type)>\n"
8755                "    function;",
8756                getGoogleStyleWithColumns(40));
8757 }
8758 
8759 TEST_F(FormatTest, FormatsPointersToArrayTypes) {
8760   verifyFormat("A (*foo_)[6];");
8761   verifyFormat("vector<int> (*foo_)[6];");
8762 }
8763 
8764 TEST_F(FormatTest, BreaksLongVariableDeclarations) {
8765   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
8766                "    LoooooooooooooooooooooooooooooooooooooooongVariable;");
8767   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType const\n"
8768                "    LoooooooooooooooooooooooooooooooooooooooongVariable;");
8769   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
8770                "    *LoooooooooooooooooooooooooooooooooooooooongVariable;");
8771 
8772   // Different ways of ()-initializiation.
8773   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
8774                "    LoooooooooooooooooooooooooooooooooooooooongVariable(1);");
8775   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
8776                "    LoooooooooooooooooooooooooooooooooooooooongVariable(a);");
8777   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
8778                "    LoooooooooooooooooooooooooooooooooooooooongVariable({});");
8779   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
8780                "    LoooooooooooooooooooooooooooooooooooooongVariable([A a]);");
8781 
8782   // Lambdas should not confuse the variable declaration heuristic.
8783   verifyFormat("LooooooooooooooooongType\n"
8784                "    variable(nullptr, [](A *a) {});",
8785                getLLVMStyleWithColumns(40));
8786 }
8787 
8788 TEST_F(FormatTest, BreaksLongDeclarations) {
8789   verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n"
8790                "    AnotherNameForTheLongType;");
8791   verifyFormat("typedef LongTemplateType<aaaaaaaaaaaaaaaaaaa()>\n"
8792                "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
8793   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
8794                "LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
8795   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType *\n"
8796                "LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
8797   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
8798                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
8799   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType MACRO\n"
8800                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
8801   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType const\n"
8802                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
8803   verifyFormat("decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n"
8804                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
8805   verifyFormat("typeof(LoooooooooooooooooooooooooooooooooooooooooongName)\n"
8806                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
8807   verifyFormat("_Atomic(LooooooooooooooooooooooooooooooooooooooooongName)\n"
8808                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
8809   verifyFormat("__underlying_type(LooooooooooooooooooooooooooooooongName)\n"
8810                "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
8811   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
8812                "LooooooooooooooooooooooooooongFunctionDeclaration(T... t);");
8813   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
8814                "LooooooooooooooooooooooooooongFunctionDeclaration(T /*t*/) {}");
8815   FormatStyle Indented = getLLVMStyle();
8816   Indented.IndentWrappedFunctionNames = true;
8817   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
8818                "    LoooooooooooooooooooooooooooooooongFunctionDeclaration();",
8819                Indented);
8820   verifyFormat(
8821       "LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
8822       "    LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
8823       Indented);
8824   verifyFormat(
8825       "LoooooooooooooooooooooooooooooooooooooooongReturnType const\n"
8826       "    LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
8827       Indented);
8828   verifyFormat(
8829       "decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n"
8830       "    LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}",
8831       Indented);
8832 
8833   // FIXME: Without the comment, this breaks after "(".
8834   verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType  // break\n"
8835                "    (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();",
8836                getGoogleStyle());
8837 
8838   verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n"
8839                "                  int LoooooooooooooooooooongParam2) {}");
8840   verifyFormat(
8841       "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n"
8842       "                                   SourceLocation L, IdentifierIn *II,\n"
8843       "                                   Type *T) {}");
8844   verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n"
8845                "ReallyReaaallyLongFunctionName(\n"
8846                "    const std::string &SomeParameter,\n"
8847                "    const SomeType<string, SomeOtherTemplateParameter>\n"
8848                "        &ReallyReallyLongParameterName,\n"
8849                "    const SomeType<string, SomeOtherTemplateParameter>\n"
8850                "        &AnotherLongParameterName) {}");
8851   verifyFormat("template <typename A>\n"
8852                "SomeLoooooooooooooooooooooongType<\n"
8853                "    typename some_namespace::SomeOtherType<A>::Type>\n"
8854                "Function() {}");
8855 
8856   verifyGoogleFormat(
8857       "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n"
8858       "    aaaaaaaaaaaaaaaaaaaaaaa;");
8859   verifyGoogleFormat(
8860       "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n"
8861       "                                   SourceLocation L) {}");
8862   verifyGoogleFormat(
8863       "some_namespace::LongReturnType\n"
8864       "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n"
8865       "    int first_long_parameter, int second_parameter) {}");
8866 
8867   verifyGoogleFormat("template <typename T>\n"
8868                      "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n"
8869                      "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}");
8870   verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8871                      "                   int aaaaaaaaaaaaaaaaaaaaaaa);");
8872 
8873   verifyFormat("typedef size_t (*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n"
8874                "    const aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8875                "        *aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8876   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8877                "    vector<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n"
8878                "        aaaaaaaaaaaaaaaaaaaaaaaa);");
8879   verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
8880                "    vector<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
8881                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>>\n"
8882                "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8883 
8884   verifyFormat("template <typename T> // Templates on own line.\n"
8885                "static int            // Some comment.\n"
8886                "MyFunction(int a);",
8887                getLLVMStyle());
8888 }
8889 
8890 TEST_F(FormatTest, FormatsArrays) {
8891   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
8892                "                         [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;");
8893   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa(aaaaaaaaaaaa)]\n"
8894                "                         [bbbbbbbbbbb(bbbbbbbbbbbb)] = c;");
8895   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaa &&\n"
8896                "    aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaa][aaaaaaaaaaaaa]) {\n}");
8897   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8898                "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
8899   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8900                "    [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;");
8901   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
8902                "    [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n"
8903                "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
8904   verifyFormat(
8905       "llvm::outs() << \"aaaaaaaaaaaa: \"\n"
8906       "             << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
8907       "                                  [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];");
8908   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaa][a]\n"
8909                "    .aaaaaaaaaaaaaaaaaaaaaa();");
8910 
8911   verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n"
8912                      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];");
8913   verifyFormat(
8914       "aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n"
8915       "                                  .aaaaaaa[0]\n"
8916       "                                  .aaaaaaaaaaaaaaaaaaaaaa();");
8917   verifyFormat("a[::b::c];");
8918 
8919   verifyNoCrash("a[,Y?)]", getLLVMStyleWithColumns(10));
8920 
8921   FormatStyle NoColumnLimit = getLLVMStyleWithColumns(0);
8922   verifyFormat("aaaaa[bbbbbb].cccccc()", NoColumnLimit);
8923 }
8924 
8925 TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
8926   verifyFormat("(a)->b();");
8927   verifyFormat("--a;");
8928 }
8929 
8930 TEST_F(FormatTest, HandlesIncludeDirectives) {
8931   verifyFormat("#include <string>\n"
8932                "#include <a/b/c.h>\n"
8933                "#include \"a/b/string\"\n"
8934                "#include \"string.h\"\n"
8935                "#include \"string.h\"\n"
8936                "#include <a-a>\n"
8937                "#include < path with space >\n"
8938                "#include_next <test.h>"
8939                "#include \"abc.h\" // this is included for ABC\n"
8940                "#include \"some long include\" // with a comment\n"
8941                "#include \"some very long include path\"\n"
8942                "#include <some/very/long/include/path>\n",
8943                getLLVMStyleWithColumns(35));
8944   EXPECT_EQ("#include \"a.h\"", format("#include  \"a.h\""));
8945   EXPECT_EQ("#include <a>", format("#include<a>"));
8946 
8947   verifyFormat("#import <string>");
8948   verifyFormat("#import <a/b/c.h>");
8949   verifyFormat("#import \"a/b/string\"");
8950   verifyFormat("#import \"string.h\"");
8951   verifyFormat("#import \"string.h\"");
8952   verifyFormat("#if __has_include(<strstream>)\n"
8953                "#include <strstream>\n"
8954                "#endif");
8955 
8956   verifyFormat("#define MY_IMPORT <a/b>");
8957 
8958   verifyFormat("#if __has_include(<a/b>)");
8959   verifyFormat("#if __has_include_next(<a/b>)");
8960   verifyFormat("#define F __has_include(<a/b>)");
8961   verifyFormat("#define F __has_include_next(<a/b>)");
8962 
8963   // Protocol buffer definition or missing "#".
8964   verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";",
8965                getLLVMStyleWithColumns(30));
8966 
8967   FormatStyle Style = getLLVMStyle();
8968   Style.AlwaysBreakBeforeMultilineStrings = true;
8969   Style.ColumnLimit = 0;
8970   verifyFormat("#import \"abc.h\"", Style);
8971 
8972   // But 'import' might also be a regular C++ namespace.
8973   verifyFormat("import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
8974                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
8975 }
8976 
8977 //===----------------------------------------------------------------------===//
8978 // Error recovery tests.
8979 //===----------------------------------------------------------------------===//
8980 
8981 TEST_F(FormatTest, IncompleteParameterLists) {
8982   FormatStyle NoBinPacking = getLLVMStyle();
8983   NoBinPacking.BinPackParameters = false;
8984   verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
8985                "                        double *min_x,\n"
8986                "                        double *max_x,\n"
8987                "                        double *min_y,\n"
8988                "                        double *max_y,\n"
8989                "                        double *min_z,\n"
8990                "                        double *max_z, ) {}",
8991                NoBinPacking);
8992 }
8993 
8994 TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
8995   verifyFormat("void f() { return; }\n42");
8996   verifyFormat("void f() {\n"
8997                "  if (0)\n"
8998                "    return;\n"
8999                "}\n"
9000                "42");
9001   verifyFormat("void f() { return }\n42");
9002   verifyFormat("void f() {\n"
9003                "  if (0)\n"
9004                "    return\n"
9005                "}\n"
9006                "42");
9007 }
9008 
9009 TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
9010   EXPECT_EQ("void f() { return }", format("void  f ( )  {  return  }"));
9011   EXPECT_EQ("void f() {\n"
9012             "  if (a)\n"
9013             "    return\n"
9014             "}",
9015             format("void  f  (  )  {  if  ( a )  return  }"));
9016   EXPECT_EQ("namespace N {\n"
9017             "void f()\n"
9018             "}",
9019             format("namespace  N  {  void f()  }"));
9020   EXPECT_EQ("namespace N {\n"
9021             "void f() {}\n"
9022             "void g()\n"
9023             "} // namespace N",
9024             format("namespace N  { void f( ) { } void g( ) }"));
9025 }
9026 
9027 TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
9028   verifyFormat("int aaaaaaaa =\n"
9029                "    // Overlylongcomment\n"
9030                "    b;",
9031                getLLVMStyleWithColumns(20));
9032   verifyFormat("function(\n"
9033                "    ShortArgument,\n"
9034                "    LoooooooooooongArgument);\n",
9035                getLLVMStyleWithColumns(20));
9036 }
9037 
9038 TEST_F(FormatTest, IncorrectAccessSpecifier) {
9039   verifyFormat("public:");
9040   verifyFormat("class A {\n"
9041                "public\n"
9042                "  void f() {}\n"
9043                "};");
9044   verifyFormat("public\n"
9045                "int qwerty;");
9046   verifyFormat("public\n"
9047                "B {}");
9048   verifyFormat("public\n"
9049                "{}");
9050   verifyFormat("public\n"
9051                "B { int x; }");
9052 }
9053 
9054 TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
9055   verifyFormat("{");
9056   verifyFormat("#})");
9057   verifyNoCrash("(/**/[:!] ?[).");
9058 }
9059 
9060 TEST_F(FormatTest, IncorrectUnbalancedBracesInMacrosWithUnicode) {
9061   // Found by oss-fuzz:
9062   // https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8212
9063   FormatStyle Style = getGoogleStyle(FormatStyle::LK_Cpp);
9064   Style.ColumnLimit = 60;
9065   verifyNoCrash(
9066       "\x23\x47\xff\x20\x28\xff\x3c\xff\x3f\xff\x20\x2f\x7b\x7a\xff\x20"
9067       "\xff\xff\xff\xca\xb5\xff\xff\xff\xff\x3a\x7b\x7d\xff\x20\xff\x20"
9068       "\xff\x74\xff\x20\x7d\x7d\xff\x7b\x3a\xff\x20\x71\xff\x20\xff\x0a",
9069       Style);
9070 }
9071 
9072 TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
9073   verifyFormat("do {\n}");
9074   verifyFormat("do {\n}\n"
9075                "f();");
9076   verifyFormat("do {\n}\n"
9077                "wheeee(fun);");
9078   verifyFormat("do {\n"
9079                "  f();\n"
9080                "}");
9081 }
9082 
9083 TEST_F(FormatTest, IncorrectCodeMissingParens) {
9084   verifyFormat("if {\n  foo;\n  foo();\n}");
9085   verifyFormat("switch {\n  foo;\n  foo();\n}");
9086   verifyIncompleteFormat("for {\n  foo;\n  foo();\n}");
9087   verifyFormat("while {\n  foo;\n  foo();\n}");
9088   verifyFormat("do {\n  foo;\n  foo();\n} while;");
9089 }
9090 
9091 TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
9092   verifyIncompleteFormat("namespace {\n"
9093                          "class Foo { Foo (\n"
9094                          "};\n"
9095                          "} // namespace");
9096 }
9097 
9098 TEST_F(FormatTest, IncorrectCodeErrorDetection) {
9099   EXPECT_EQ("{\n  {}\n", format("{\n{\n}\n"));
9100   EXPECT_EQ("{\n  {}\n", format("{\n  {\n}\n"));
9101   EXPECT_EQ("{\n  {}\n", format("{\n  {\n  }\n"));
9102   EXPECT_EQ("{\n  {}\n}\n}\n", format("{\n  {\n    }\n  }\n}\n"));
9103 
9104   EXPECT_EQ("{\n"
9105             "  {\n"
9106             "    breakme(\n"
9107             "        qwe);\n"
9108             "  }\n",
9109             format("{\n"
9110                    "    {\n"
9111                    " breakme(qwe);\n"
9112                    "}\n",
9113                    getLLVMStyleWithColumns(10)));
9114 }
9115 
9116 TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
9117   verifyFormat("int x = {\n"
9118                "    avariable,\n"
9119                "    b(alongervariable)};",
9120                getLLVMStyleWithColumns(25));
9121 }
9122 
9123 TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
9124   verifyFormat("return (a)(b){1, 2, 3};");
9125 }
9126 
9127 TEST_F(FormatTest, LayoutCxx11BraceInitializers) {
9128   verifyFormat("vector<int> x{1, 2, 3, 4};");
9129   verifyFormat("vector<int> x{\n"
9130                "    1,\n"
9131                "    2,\n"
9132                "    3,\n"
9133                "    4,\n"
9134                "};");
9135   verifyFormat("vector<T> x{{}, {}, {}, {}};");
9136   verifyFormat("f({1, 2});");
9137   verifyFormat("auto v = Foo{-1};");
9138   verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});");
9139   verifyFormat("Class::Class : member{1, 2, 3} {}");
9140   verifyFormat("new vector<int>{1, 2, 3};");
9141   verifyFormat("new int[3]{1, 2, 3};");
9142   verifyFormat("new int{1};");
9143   verifyFormat("return {arg1, arg2};");
9144   verifyFormat("return {arg1, SomeType{parameter}};");
9145   verifyFormat("int count = set<int>{f(), g(), h()}.size();");
9146   verifyFormat("new T{arg1, arg2};");
9147   verifyFormat("f(MyMap[{composite, key}]);");
9148   verifyFormat("class Class {\n"
9149                "  T member = {arg1, arg2};\n"
9150                "};");
9151   verifyFormat("vector<int> foo = {::SomeGlobalFunction()};");
9152   verifyFormat("const struct A a = {.a = 1, .b = 2};");
9153   verifyFormat("const struct A a = {[0] = 1, [1] = 2};");
9154   verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");");
9155   verifyFormat("int a = std::is_integral<int>{} + 0;");
9156 
9157   verifyFormat("int foo(int i) { return fo1{}(i); }");
9158   verifyFormat("int foo(int i) { return fo1{}(i); }");
9159   verifyFormat("auto i = decltype(x){};");
9160   verifyFormat("auto i = typeof(x){};");
9161   verifyFormat("auto i = _Atomic(x){};");
9162   verifyFormat("std::vector<int> v = {1, 0 /* comment */};");
9163   verifyFormat("Node n{1, Node{1000}, //\n"
9164                "       2};");
9165   verifyFormat("Aaaa aaaaaaa{\n"
9166                "    {\n"
9167                "        aaaa,\n"
9168                "    },\n"
9169                "};");
9170   verifyFormat("class C : public D {\n"
9171                "  SomeClass SC{2};\n"
9172                "};");
9173   verifyFormat("class C : public A {\n"
9174                "  class D : public B {\n"
9175                "    void f() { int i{2}; }\n"
9176                "  };\n"
9177                "};");
9178   verifyFormat("#define A {a, a},");
9179 
9180   // Avoid breaking between equal sign and opening brace
9181   FormatStyle AvoidBreakingFirstArgument = getLLVMStyle();
9182   AvoidBreakingFirstArgument.PenaltyBreakBeforeFirstCallParameter = 200;
9183   verifyFormat("const std::unordered_map<std::string, int> MyHashTable =\n"
9184                "    {{\"aaaaaaaaaaaaaaaaaaaaa\", 0},\n"
9185                "     {\"bbbbbbbbbbbbbbbbbbbbb\", 1},\n"
9186                "     {\"ccccccccccccccccccccc\", 2}};",
9187                AvoidBreakingFirstArgument);
9188 
9189   // Binpacking only if there is no trailing comma
9190   verifyFormat("const Aaaaaa aaaaa = {aaaaaaaaaa, bbbbbbbbbb,\n"
9191                "                      cccccccccc, dddddddddd};",
9192                getLLVMStyleWithColumns(50));
9193   verifyFormat("const Aaaaaa aaaaa = {\n"
9194                "    aaaaaaaaaaa,\n"
9195                "    bbbbbbbbbbb,\n"
9196                "    ccccccccccc,\n"
9197                "    ddddddddddd,\n"
9198                "};",
9199                getLLVMStyleWithColumns(50));
9200 
9201   // Cases where distinguising braced lists and blocks is hard.
9202   verifyFormat("vector<int> v{12} GUARDED_BY(mutex);");
9203   verifyFormat("void f() {\n"
9204                "  return; // comment\n"
9205                "}\n"
9206                "SomeType t;");
9207   verifyFormat("void f() {\n"
9208                "  if (a) {\n"
9209                "    f();\n"
9210                "  }\n"
9211                "}\n"
9212                "SomeType t;");
9213 
9214   // In combination with BinPackArguments = false.
9215   FormatStyle NoBinPacking = getLLVMStyle();
9216   NoBinPacking.BinPackArguments = false;
9217   verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n"
9218                "                      bbbbb,\n"
9219                "                      ccccc,\n"
9220                "                      ddddd,\n"
9221                "                      eeeee,\n"
9222                "                      ffffff,\n"
9223                "                      ggggg,\n"
9224                "                      hhhhhh,\n"
9225                "                      iiiiii,\n"
9226                "                      jjjjjj,\n"
9227                "                      kkkkkk};",
9228                NoBinPacking);
9229   verifyFormat("const Aaaaaa aaaaa = {\n"
9230                "    aaaaa,\n"
9231                "    bbbbb,\n"
9232                "    ccccc,\n"
9233                "    ddddd,\n"
9234                "    eeeee,\n"
9235                "    ffffff,\n"
9236                "    ggggg,\n"
9237                "    hhhhhh,\n"
9238                "    iiiiii,\n"
9239                "    jjjjjj,\n"
9240                "    kkkkkk,\n"
9241                "};",
9242                NoBinPacking);
9243   verifyFormat(
9244       "const Aaaaaa aaaaa = {\n"
9245       "    aaaaa,  bbbbb,  ccccc,  ddddd,  eeeee,  ffffff, ggggg, hhhhhh,\n"
9246       "    iiiiii, jjjjjj, kkkkkk, aaaaa,  bbbbb,  ccccc,  ddddd, eeeee,\n"
9247       "    ffffff, ggggg,  hhhhhh, iiiiii, jjjjjj, kkkkkk,\n"
9248       "};",
9249       NoBinPacking);
9250 
9251   NoBinPacking.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
9252   EXPECT_EQ("static uint8 CddDp83848Reg[] = {\n"
9253             "    CDDDP83848_BMCR_REGISTER,\n"
9254             "    CDDDP83848_BMSR_REGISTER,\n"
9255             "    CDDDP83848_RBR_REGISTER};",
9256             format("static uint8 CddDp83848Reg[] = {CDDDP83848_BMCR_REGISTER,\n"
9257                    "                                CDDDP83848_BMSR_REGISTER,\n"
9258                    "                                CDDDP83848_RBR_REGISTER};",
9259                    NoBinPacking));
9260 
9261   // FIXME: The alignment of these trailing comments might be bad. Then again,
9262   // this might be utterly useless in real code.
9263   verifyFormat("Constructor::Constructor()\n"
9264                "    : some_value{         //\n"
9265                "                 aaaaaaa, //\n"
9266                "                 bbbbbbb} {}");
9267 
9268   // In braced lists, the first comment is always assumed to belong to the
9269   // first element. Thus, it can be moved to the next or previous line as
9270   // appropriate.
9271   EXPECT_EQ("function({// First element:\n"
9272             "          1,\n"
9273             "          // Second element:\n"
9274             "          2});",
9275             format("function({\n"
9276                    "    // First element:\n"
9277                    "    1,\n"
9278                    "    // Second element:\n"
9279                    "    2});"));
9280   EXPECT_EQ("std::vector<int> MyNumbers{\n"
9281             "    // First element:\n"
9282             "    1,\n"
9283             "    // Second element:\n"
9284             "    2};",
9285             format("std::vector<int> MyNumbers{// First element:\n"
9286                    "                           1,\n"
9287                    "                           // Second element:\n"
9288                    "                           2};",
9289                    getLLVMStyleWithColumns(30)));
9290   // A trailing comma should still lead to an enforced line break and no
9291   // binpacking.
9292   EXPECT_EQ("vector<int> SomeVector = {\n"
9293             "    // aaa\n"
9294             "    1,\n"
9295             "    2,\n"
9296             "};",
9297             format("vector<int> SomeVector = { // aaa\n"
9298                    "    1, 2, };"));
9299 
9300   // C++11 brace initializer list l-braces should not be treated any differently
9301   // when breaking before lambda bodies is enabled
9302   FormatStyle BreakBeforeLambdaBody = getLLVMStyle();
9303   BreakBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
9304   BreakBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
9305   BreakBeforeLambdaBody.AlwaysBreakBeforeMultilineStrings = true;
9306   verifyFormat(
9307       "std::runtime_error{\n"
9308       "    \"Long string which will force a break onto the next line...\"};",
9309       BreakBeforeLambdaBody);
9310 
9311   FormatStyle ExtraSpaces = getLLVMStyle();
9312   ExtraSpaces.Cpp11BracedListStyle = false;
9313   ExtraSpaces.ColumnLimit = 75;
9314   verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces);
9315   verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces);
9316   verifyFormat("f({ 1, 2 });", ExtraSpaces);
9317   verifyFormat("auto v = Foo{ 1 };", ExtraSpaces);
9318   verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces);
9319   verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces);
9320   verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces);
9321   verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces);
9322   verifyFormat("return { arg1, arg2 };", ExtraSpaces);
9323   verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces);
9324   verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces);
9325   verifyFormat("new T{ arg1, arg2 };", ExtraSpaces);
9326   verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces);
9327   verifyFormat("class Class {\n"
9328                "  T member = { arg1, arg2 };\n"
9329                "};",
9330                ExtraSpaces);
9331   verifyFormat(
9332       "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9333       "                                 aaaaaaaaaaaaaaaaaaaa, aaaaa }\n"
9334       "                  : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
9335       "                                 bbbbbbbbbbbbbbbbbbbb, bbbbb };",
9336       ExtraSpaces);
9337   verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces);
9338   verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });",
9339                ExtraSpaces);
9340   verifyFormat(
9341       "someFunction(OtherParam,\n"
9342       "             BracedList{ // comment 1 (Forcing interesting break)\n"
9343       "                         param1, param2,\n"
9344       "                         // comment 2\n"
9345       "                         param3, param4 });",
9346       ExtraSpaces);
9347   verifyFormat(
9348       "std::this_thread::sleep_for(\n"
9349       "    std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);",
9350       ExtraSpaces);
9351   verifyFormat("std::vector<MyValues> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa{\n"
9352                "    aaaaaaa,\n"
9353                "    aaaaaaaaaa,\n"
9354                "    aaaaa,\n"
9355                "    aaaaaaaaaaaaaaa,\n"
9356                "    aaa,\n"
9357                "    aaaaaaaaaa,\n"
9358                "    a,\n"
9359                "    aaaaaaaaaaaaaaaaaaaaa,\n"
9360                "    aaaaaaaaaaaa,\n"
9361                "    aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa,\n"
9362                "    aaaaaaa,\n"
9363                "    a};");
9364   verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces);
9365   verifyFormat("const struct A a = { .a = 1, .b = 2 };", ExtraSpaces);
9366   verifyFormat("const struct A a = { [0] = 1, [1] = 2 };", ExtraSpaces);
9367 
9368   // Avoid breaking between initializer/equal sign and opening brace
9369   ExtraSpaces.PenaltyBreakBeforeFirstCallParameter = 200;
9370   verifyFormat("const std::unordered_map<std::string, int> MyHashTable = {\n"
9371                "  { \"aaaaaaaaaaaaaaaaaaaaa\", 0 },\n"
9372                "  { \"bbbbbbbbbbbbbbbbbbbbb\", 1 },\n"
9373                "  { \"ccccccccccccccccccccc\", 2 }\n"
9374                "};",
9375                ExtraSpaces);
9376   verifyFormat("const std::unordered_map<std::string, int> MyHashTable{\n"
9377                "  { \"aaaaaaaaaaaaaaaaaaaaa\", 0 },\n"
9378                "  { \"bbbbbbbbbbbbbbbbbbbbb\", 1 },\n"
9379                "  { \"ccccccccccccccccccccc\", 2 }\n"
9380                "};",
9381                ExtraSpaces);
9382 
9383   FormatStyle SpaceBeforeBrace = getLLVMStyle();
9384   SpaceBeforeBrace.SpaceBeforeCpp11BracedList = true;
9385   verifyFormat("vector<int> x {1, 2, 3, 4};", SpaceBeforeBrace);
9386   verifyFormat("f({}, {{}, {}}, MyMap[{k, v}]);", SpaceBeforeBrace);
9387 
9388   FormatStyle SpaceBetweenBraces = getLLVMStyle();
9389   SpaceBetweenBraces.SpacesInAngles = true;
9390   SpaceBetweenBraces.SpacesInParentheses = true;
9391   SpaceBetweenBraces.SpacesInSquareBrackets = true;
9392   verifyFormat("vector< int > x{ 1, 2, 3, 4 };", SpaceBetweenBraces);
9393   verifyFormat("f( {}, { {}, {} }, MyMap[ { k, v } ] );", SpaceBetweenBraces);
9394   verifyFormat("vector< int > x{ // comment 1\n"
9395                "                 1, 2, 3, 4 };",
9396                SpaceBetweenBraces);
9397   SpaceBetweenBraces.ColumnLimit = 20;
9398   EXPECT_EQ("vector< int > x{\n"
9399             "    1, 2, 3, 4 };",
9400             format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
9401   SpaceBetweenBraces.ColumnLimit = 24;
9402   EXPECT_EQ("vector< int > x{ 1, 2,\n"
9403             "                 3, 4 };",
9404             format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
9405   EXPECT_EQ("vector< int > x{\n"
9406             "    1,\n"
9407             "    2,\n"
9408             "    3,\n"
9409             "    4,\n"
9410             "};",
9411             format("vector<int>x{1,2,3,4,};", SpaceBetweenBraces));
9412   verifyFormat("vector< int > x{};", SpaceBetweenBraces);
9413   SpaceBetweenBraces.SpaceInEmptyParentheses = true;
9414   verifyFormat("vector< int > x{ };", SpaceBetweenBraces);
9415 }
9416 
9417 TEST_F(FormatTest, FormatSpacesInAngles) {
9418   FormatStyle SpaceInAngles = getLLVMStyle();
9419   SpaceInAngles.SpacesInAngles = true;
9420   verifyFormat("vector< ::std::string > x1;", SpaceInAngles);
9421   verifyFormat("Foo< int, Bar > x2;", SpaceInAngles);
9422   verifyFormat("Foo< ::int, ::Bar > x3;", SpaceInAngles);
9423 
9424   SpaceInAngles.SpacesInAngles = false;
9425   verifyFormat("vector<::std::string> x4;", SpaceInAngles);
9426   verifyFormat("vector<int> x5;", SpaceInAngles);
9427   verifyFormat("Foo<int, Bar> x6;", SpaceInAngles);
9428   verifyFormat("Foo<::int, ::Bar> x7;", SpaceInAngles);
9429 }
9430 
9431 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) {
9432   verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9433                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9434                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9435                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9436                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9437                "                 1, 22, 333, 4444, 55555, 666666, 7777777};");
9438   verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777, //\n"
9439                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9440                "                 1, 22, 333, 4444, 55555, //\n"
9441                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9442                "                 1, 22, 333, 4444, 55555, 666666, 7777777};");
9443   verifyFormat(
9444       "vector<int> x = {1,       22, 333, 4444, 55555, 666666, 7777777,\n"
9445       "                 1,       22, 333, 4444, 55555, 666666, 7777777,\n"
9446       "                 1,       22, 333, 4444, 55555, 666666, // comment\n"
9447       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
9448       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
9449       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
9450       "                 7777777};");
9451   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
9452                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
9453                "    X86::R8,  X86::R9,  X86::R10, X86::R11, 0};");
9454   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
9455                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
9456                "    // Separating comment.\n"
9457                "    X86::R8, X86::R9, X86::R10, X86::R11, 0};");
9458   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
9459                "    // Leading comment\n"
9460                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
9461                "    X86::R8,  X86::R9,  X86::R10, X86::R11, 0};");
9462   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
9463                "                 1, 1, 1, 1};",
9464                getLLVMStyleWithColumns(39));
9465   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
9466                "                 1, 1, 1, 1};",
9467                getLLVMStyleWithColumns(38));
9468   verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n"
9469                "    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};",
9470                getLLVMStyleWithColumns(43));
9471   verifyFormat(
9472       "static unsigned SomeValues[10][3] = {\n"
9473       "    {1, 4, 0},  {4, 9, 0},  {4, 5, 9},  {8, 5, 4}, {1, 8, 4},\n"
9474       "    {10, 1, 6}, {11, 0, 9}, {2, 11, 9}, {5, 2, 9}, {11, 2, 7}};");
9475   verifyFormat("static auto fields = new vector<string>{\n"
9476                "    \"aaaaaaaaaaaaa\",\n"
9477                "    \"aaaaaaaaaaaaa\",\n"
9478                "    \"aaaaaaaaaaaa\",\n"
9479                "    \"aaaaaaaaaaaaaa\",\n"
9480                "    \"aaaaaaaaaaaaaaaaaaaaaaaaa\",\n"
9481                "    \"aaaaaaaaaaaa\",\n"
9482                "    \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\n"
9483                "};");
9484   verifyFormat("vector<int> x = {1, 2, 3, 4, aaaaaaaaaaaaaaaaa, 6};");
9485   verifyFormat("vector<int> x = {1, aaaaaaaaaaaaaaaaaaaaaa,\n"
9486                "                 2, bbbbbbbbbbbbbbbbbbbbbb,\n"
9487                "                 3, cccccccccccccccccccccc};",
9488                getLLVMStyleWithColumns(60));
9489 
9490   // Trailing commas.
9491   verifyFormat("vector<int> x = {\n"
9492                "    1, 1, 1, 1, 1, 1, 1, 1,\n"
9493                "};",
9494                getLLVMStyleWithColumns(39));
9495   verifyFormat("vector<int> x = {\n"
9496                "    1, 1, 1, 1, 1, 1, 1, 1, //\n"
9497                "};",
9498                getLLVMStyleWithColumns(39));
9499   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
9500                "                 1, 1, 1, 1,\n"
9501                "                 /**/ /**/};",
9502                getLLVMStyleWithColumns(39));
9503 
9504   // Trailing comment in the first line.
9505   verifyFormat("vector<int> iiiiiiiiiiiiiii = {                      //\n"
9506                "    1111111111, 2222222222, 33333333333, 4444444444, //\n"
9507                "    111111111,  222222222,  3333333333,  444444444,  //\n"
9508                "    11111111,   22222222,   333333333,   44444444};");
9509   // Trailing comment in the last line.
9510   verifyFormat("int aaaaa[] = {\n"
9511                "    1, 2, 3, // comment\n"
9512                "    4, 5, 6  // comment\n"
9513                "};");
9514 
9515   // With nested lists, we should either format one item per line or all nested
9516   // lists one on line.
9517   // FIXME: For some nested lists, we can do better.
9518   verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n"
9519                "        {aaaaaaaaaaaaaaaaaaa},\n"
9520                "        {aaaaaaaaaaaaaaaaaaaaa},\n"
9521                "        {aaaaaaaaaaaaaaaaa}};",
9522                getLLVMStyleWithColumns(60));
9523   verifyFormat(
9524       "SomeStruct my_struct_array = {\n"
9525       "    {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n"
9526       "     aaaaaaaaaaaaa, aaaaaaa, aaa},\n"
9527       "    {aaa, aaa},\n"
9528       "    {aaa, aaa},\n"
9529       "    {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n"
9530       "    {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n"
9531       "     aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};");
9532 
9533   // No column layout should be used here.
9534   verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n"
9535                "                   bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};");
9536 
9537   verifyNoCrash("a<,");
9538 
9539   // No braced initializer here.
9540   verifyFormat("void f() {\n"
9541                "  struct Dummy {};\n"
9542                "  f(v);\n"
9543                "}");
9544 
9545   // Long lists should be formatted in columns even if they are nested.
9546   verifyFormat(
9547       "vector<int> x = function({1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9548       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9549       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9550       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9551       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9552       "                          1, 22, 333, 4444, 55555, 666666, 7777777});");
9553 
9554   // Allow "single-column" layout even if that violates the column limit. There
9555   // isn't going to be a better way.
9556   verifyFormat("std::vector<int> a = {\n"
9557                "    aaaaaaaa,\n"
9558                "    aaaaaaaa,\n"
9559                "    aaaaaaaa,\n"
9560                "    aaaaaaaa,\n"
9561                "    aaaaaaaaaa,\n"
9562                "    aaaaaaaa,\n"
9563                "    aaaaaaaaaaaaaaaaaaaaaaaaaaa};",
9564                getLLVMStyleWithColumns(30));
9565   verifyFormat("vector<int> aaaa = {\n"
9566                "    aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9567                "    aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9568                "    aaaaaa.aaaaaaa,\n"
9569                "    aaaaaa.aaaaaaa,\n"
9570                "    aaaaaa.aaaaaaa,\n"
9571                "    aaaaaa.aaaaaaa,\n"
9572                "};");
9573 
9574   // Don't create hanging lists.
9575   verifyFormat("someFunction(Param, {List1, List2,\n"
9576                "                     List3});",
9577                getLLVMStyleWithColumns(35));
9578   verifyFormat("someFunction(Param, Param,\n"
9579                "             {List1, List2,\n"
9580                "              List3});",
9581                getLLVMStyleWithColumns(35));
9582   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa, {},\n"
9583                "                               aaaaaaaaaaaaaaaaaaaaaaa);");
9584 }
9585 
9586 TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
9587   FormatStyle DoNotMerge = getLLVMStyle();
9588   DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
9589 
9590   verifyFormat("void f() { return 42; }");
9591   verifyFormat("void f() {\n"
9592                "  return 42;\n"
9593                "}",
9594                DoNotMerge);
9595   verifyFormat("void f() {\n"
9596                "  // Comment\n"
9597                "}");
9598   verifyFormat("{\n"
9599                "#error {\n"
9600                "  int a;\n"
9601                "}");
9602   verifyFormat("{\n"
9603                "  int a;\n"
9604                "#error {\n"
9605                "}");
9606   verifyFormat("void f() {} // comment");
9607   verifyFormat("void f() { int a; } // comment");
9608   verifyFormat("void f() {\n"
9609                "} // comment",
9610                DoNotMerge);
9611   verifyFormat("void f() {\n"
9612                "  int a;\n"
9613                "} // comment",
9614                DoNotMerge);
9615   verifyFormat("void f() {\n"
9616                "} // comment",
9617                getLLVMStyleWithColumns(15));
9618 
9619   verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
9620   verifyFormat("void f() {\n  return 42;\n}", getLLVMStyleWithColumns(22));
9621 
9622   verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
9623   verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
9624   verifyFormat("class C {\n"
9625                "  C()\n"
9626                "      : iiiiiiii(nullptr),\n"
9627                "        kkkkkkk(nullptr),\n"
9628                "        mmmmmmm(nullptr),\n"
9629                "        nnnnnnn(nullptr) {}\n"
9630                "};",
9631                getGoogleStyle());
9632 
9633   FormatStyle NoColumnLimit = getLLVMStyle();
9634   NoColumnLimit.ColumnLimit = 0;
9635   EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit));
9636   EXPECT_EQ("class C {\n"
9637             "  A() : b(0) {}\n"
9638             "};",
9639             format("class C{A():b(0){}};", NoColumnLimit));
9640   EXPECT_EQ("A()\n"
9641             "    : b(0) {\n"
9642             "}",
9643             format("A()\n:b(0)\n{\n}", NoColumnLimit));
9644 
9645   FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit;
9646   DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine =
9647       FormatStyle::SFS_None;
9648   EXPECT_EQ("A()\n"
9649             "    : b(0) {\n"
9650             "}",
9651             format("A():b(0){}", DoNotMergeNoColumnLimit));
9652   EXPECT_EQ("A()\n"
9653             "    : b(0) {\n"
9654             "}",
9655             format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit));
9656 
9657   verifyFormat("#define A          \\\n"
9658                "  void f() {       \\\n"
9659                "    int i;         \\\n"
9660                "  }",
9661                getLLVMStyleWithColumns(20));
9662   verifyFormat("#define A           \\\n"
9663                "  void f() { int i; }",
9664                getLLVMStyleWithColumns(21));
9665   verifyFormat("#define A            \\\n"
9666                "  void f() {         \\\n"
9667                "    int i;           \\\n"
9668                "  }                  \\\n"
9669                "  int j;",
9670                getLLVMStyleWithColumns(22));
9671   verifyFormat("#define A             \\\n"
9672                "  void f() { int i; } \\\n"
9673                "  int j;",
9674                getLLVMStyleWithColumns(23));
9675 }
9676 
9677 TEST_F(FormatTest, PullEmptyFunctionDefinitionsIntoSingleLine) {
9678   FormatStyle MergeEmptyOnly = getLLVMStyle();
9679   MergeEmptyOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
9680   verifyFormat("class C {\n"
9681                "  int f() {}\n"
9682                "};",
9683                MergeEmptyOnly);
9684   verifyFormat("class C {\n"
9685                "  int f() {\n"
9686                "    return 42;\n"
9687                "  }\n"
9688                "};",
9689                MergeEmptyOnly);
9690   verifyFormat("int f() {}", MergeEmptyOnly);
9691   verifyFormat("int f() {\n"
9692                "  return 42;\n"
9693                "}",
9694                MergeEmptyOnly);
9695 
9696   // Also verify behavior when BraceWrapping.AfterFunction = true
9697   MergeEmptyOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
9698   MergeEmptyOnly.BraceWrapping.AfterFunction = true;
9699   verifyFormat("int f() {}", MergeEmptyOnly);
9700   verifyFormat("class C {\n"
9701                "  int f() {}\n"
9702                "};",
9703                MergeEmptyOnly);
9704 }
9705 
9706 TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) {
9707   FormatStyle MergeInlineOnly = getLLVMStyle();
9708   MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
9709   verifyFormat("class C {\n"
9710                "  int f() { return 42; }\n"
9711                "};",
9712                MergeInlineOnly);
9713   verifyFormat("int f() {\n"
9714                "  return 42;\n"
9715                "}",
9716                MergeInlineOnly);
9717 
9718   // SFS_Inline implies SFS_Empty
9719   verifyFormat("class C {\n"
9720                "  int f() {}\n"
9721                "};",
9722                MergeInlineOnly);
9723   verifyFormat("int f() {}", MergeInlineOnly);
9724 
9725   // Also verify behavior when BraceWrapping.AfterFunction = true
9726   MergeInlineOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
9727   MergeInlineOnly.BraceWrapping.AfterFunction = true;
9728   verifyFormat("class C {\n"
9729                "  int f() { return 42; }\n"
9730                "};",
9731                MergeInlineOnly);
9732   verifyFormat("int f()\n"
9733                "{\n"
9734                "  return 42;\n"
9735                "}",
9736                MergeInlineOnly);
9737 
9738   // SFS_Inline implies SFS_Empty
9739   verifyFormat("int f() {}", MergeInlineOnly);
9740   verifyFormat("class C {\n"
9741                "  int f() {}\n"
9742                "};",
9743                MergeInlineOnly);
9744 }
9745 
9746 TEST_F(FormatTest, PullInlineOnlyFunctionDefinitionsIntoSingleLine) {
9747   FormatStyle MergeInlineOnly = getLLVMStyle();
9748   MergeInlineOnly.AllowShortFunctionsOnASingleLine =
9749       FormatStyle::SFS_InlineOnly;
9750   verifyFormat("class C {\n"
9751                "  int f() { return 42; }\n"
9752                "};",
9753                MergeInlineOnly);
9754   verifyFormat("int f() {\n"
9755                "  return 42;\n"
9756                "}",
9757                MergeInlineOnly);
9758 
9759   // SFS_InlineOnly does not imply SFS_Empty
9760   verifyFormat("class C {\n"
9761                "  int f() {}\n"
9762                "};",
9763                MergeInlineOnly);
9764   verifyFormat("int f() {\n"
9765                "}",
9766                MergeInlineOnly);
9767 
9768   // Also verify behavior when BraceWrapping.AfterFunction = true
9769   MergeInlineOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
9770   MergeInlineOnly.BraceWrapping.AfterFunction = true;
9771   verifyFormat("class C {\n"
9772                "  int f() { return 42; }\n"
9773                "};",
9774                MergeInlineOnly);
9775   verifyFormat("int f()\n"
9776                "{\n"
9777                "  return 42;\n"
9778                "}",
9779                MergeInlineOnly);
9780 
9781   // SFS_InlineOnly does not imply SFS_Empty
9782   verifyFormat("int f()\n"
9783                "{\n"
9784                "}",
9785                MergeInlineOnly);
9786   verifyFormat("class C {\n"
9787                "  int f() {}\n"
9788                "};",
9789                MergeInlineOnly);
9790 }
9791 
9792 TEST_F(FormatTest, SplitEmptyFunction) {
9793   FormatStyle Style = getLLVMStyle();
9794   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
9795   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
9796   Style.BraceWrapping.AfterFunction = true;
9797   Style.BraceWrapping.SplitEmptyFunction = false;
9798   Style.ColumnLimit = 40;
9799 
9800   verifyFormat("int f()\n"
9801                "{}",
9802                Style);
9803   verifyFormat("int f()\n"
9804                "{\n"
9805                "  return 42;\n"
9806                "}",
9807                Style);
9808   verifyFormat("int f()\n"
9809                "{\n"
9810                "  // some comment\n"
9811                "}",
9812                Style);
9813 
9814   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
9815   verifyFormat("int f() {}", Style);
9816   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
9817                "{}",
9818                Style);
9819   verifyFormat("int f()\n"
9820                "{\n"
9821                "  return 0;\n"
9822                "}",
9823                Style);
9824 
9825   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
9826   verifyFormat("class Foo {\n"
9827                "  int f() {}\n"
9828                "};\n",
9829                Style);
9830   verifyFormat("class Foo {\n"
9831                "  int f() { return 0; }\n"
9832                "};\n",
9833                Style);
9834   verifyFormat("class Foo {\n"
9835                "  int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
9836                "  {}\n"
9837                "};\n",
9838                Style);
9839   verifyFormat("class Foo {\n"
9840                "  int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
9841                "  {\n"
9842                "    return 0;\n"
9843                "  }\n"
9844                "};\n",
9845                Style);
9846 
9847   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
9848   verifyFormat("int f() {}", Style);
9849   verifyFormat("int f() { return 0; }", Style);
9850   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
9851                "{}",
9852                Style);
9853   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
9854                "{\n"
9855                "  return 0;\n"
9856                "}",
9857                Style);
9858 }
9859 TEST_F(FormatTest, KeepShortFunctionAfterPPElse) {
9860   FormatStyle Style = getLLVMStyle();
9861   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
9862   verifyFormat("#ifdef A\n"
9863                "int f() {}\n"
9864                "#else\n"
9865                "int g() {}\n"
9866                "#endif",
9867                Style);
9868 }
9869 
9870 TEST_F(FormatTest, SplitEmptyClass) {
9871   FormatStyle Style = getLLVMStyle();
9872   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
9873   Style.BraceWrapping.AfterClass = true;
9874   Style.BraceWrapping.SplitEmptyRecord = false;
9875 
9876   verifyFormat("class Foo\n"
9877                "{};",
9878                Style);
9879   verifyFormat("/* something */ class Foo\n"
9880                "{};",
9881                Style);
9882   verifyFormat("template <typename X> class Foo\n"
9883                "{};",
9884                Style);
9885   verifyFormat("class Foo\n"
9886                "{\n"
9887                "  Foo();\n"
9888                "};",
9889                Style);
9890   verifyFormat("typedef class Foo\n"
9891                "{\n"
9892                "} Foo_t;",
9893                Style);
9894 }
9895 
9896 TEST_F(FormatTest, SplitEmptyStruct) {
9897   FormatStyle Style = getLLVMStyle();
9898   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
9899   Style.BraceWrapping.AfterStruct = true;
9900   Style.BraceWrapping.SplitEmptyRecord = false;
9901 
9902   verifyFormat("struct Foo\n"
9903                "{};",
9904                Style);
9905   verifyFormat("/* something */ struct Foo\n"
9906                "{};",
9907                Style);
9908   verifyFormat("template <typename X> struct Foo\n"
9909                "{};",
9910                Style);
9911   verifyFormat("struct Foo\n"
9912                "{\n"
9913                "  Foo();\n"
9914                "};",
9915                Style);
9916   verifyFormat("typedef struct Foo\n"
9917                "{\n"
9918                "} Foo_t;",
9919                Style);
9920   // typedef struct Bar {} Bar_t;
9921 }
9922 
9923 TEST_F(FormatTest, SplitEmptyUnion) {
9924   FormatStyle Style = getLLVMStyle();
9925   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
9926   Style.BraceWrapping.AfterUnion = true;
9927   Style.BraceWrapping.SplitEmptyRecord = false;
9928 
9929   verifyFormat("union Foo\n"
9930                "{};",
9931                Style);
9932   verifyFormat("/* something */ union Foo\n"
9933                "{};",
9934                Style);
9935   verifyFormat("union Foo\n"
9936                "{\n"
9937                "  A,\n"
9938                "};",
9939                Style);
9940   verifyFormat("typedef union Foo\n"
9941                "{\n"
9942                "} Foo_t;",
9943                Style);
9944 }
9945 
9946 TEST_F(FormatTest, SplitEmptyNamespace) {
9947   FormatStyle Style = getLLVMStyle();
9948   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
9949   Style.BraceWrapping.AfterNamespace = true;
9950   Style.BraceWrapping.SplitEmptyNamespace = false;
9951 
9952   verifyFormat("namespace Foo\n"
9953                "{};",
9954                Style);
9955   verifyFormat("/* something */ namespace Foo\n"
9956                "{};",
9957                Style);
9958   verifyFormat("inline namespace Foo\n"
9959                "{};",
9960                Style);
9961   verifyFormat("/* something */ inline namespace Foo\n"
9962                "{};",
9963                Style);
9964   verifyFormat("export namespace Foo\n"
9965                "{};",
9966                Style);
9967   verifyFormat("namespace Foo\n"
9968                "{\n"
9969                "void Bar();\n"
9970                "};",
9971                Style);
9972 }
9973 
9974 TEST_F(FormatTest, NeverMergeShortRecords) {
9975   FormatStyle Style = getLLVMStyle();
9976 
9977   verifyFormat("class Foo {\n"
9978                "  Foo();\n"
9979                "};",
9980                Style);
9981   verifyFormat("typedef class Foo {\n"
9982                "  Foo();\n"
9983                "} Foo_t;",
9984                Style);
9985   verifyFormat("struct Foo {\n"
9986                "  Foo();\n"
9987                "};",
9988                Style);
9989   verifyFormat("typedef struct Foo {\n"
9990                "  Foo();\n"
9991                "} Foo_t;",
9992                Style);
9993   verifyFormat("union Foo {\n"
9994                "  A,\n"
9995                "};",
9996                Style);
9997   verifyFormat("typedef union Foo {\n"
9998                "  A,\n"
9999                "} Foo_t;",
10000                Style);
10001   verifyFormat("namespace Foo {\n"
10002                "void Bar();\n"
10003                "};",
10004                Style);
10005 
10006   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
10007   Style.BraceWrapping.AfterClass = true;
10008   Style.BraceWrapping.AfterStruct = true;
10009   Style.BraceWrapping.AfterUnion = true;
10010   Style.BraceWrapping.AfterNamespace = true;
10011   verifyFormat("class Foo\n"
10012                "{\n"
10013                "  Foo();\n"
10014                "};",
10015                Style);
10016   verifyFormat("typedef class Foo\n"
10017                "{\n"
10018                "  Foo();\n"
10019                "} Foo_t;",
10020                Style);
10021   verifyFormat("struct Foo\n"
10022                "{\n"
10023                "  Foo();\n"
10024                "};",
10025                Style);
10026   verifyFormat("typedef struct Foo\n"
10027                "{\n"
10028                "  Foo();\n"
10029                "} Foo_t;",
10030                Style);
10031   verifyFormat("union Foo\n"
10032                "{\n"
10033                "  A,\n"
10034                "};",
10035                Style);
10036   verifyFormat("typedef union Foo\n"
10037                "{\n"
10038                "  A,\n"
10039                "} Foo_t;",
10040                Style);
10041   verifyFormat("namespace Foo\n"
10042                "{\n"
10043                "void Bar();\n"
10044                "};",
10045                Style);
10046 }
10047 
10048 TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
10049   // Elaborate type variable declarations.
10050   verifyFormat("struct foo a = {bar};\nint n;");
10051   verifyFormat("class foo a = {bar};\nint n;");
10052   verifyFormat("union foo a = {bar};\nint n;");
10053 
10054   // Elaborate types inside function definitions.
10055   verifyFormat("struct foo f() {}\nint n;");
10056   verifyFormat("class foo f() {}\nint n;");
10057   verifyFormat("union foo f() {}\nint n;");
10058 
10059   // Templates.
10060   verifyFormat("template <class X> void f() {}\nint n;");
10061   verifyFormat("template <struct X> void f() {}\nint n;");
10062   verifyFormat("template <union X> void f() {}\nint n;");
10063 
10064   // Actual definitions...
10065   verifyFormat("struct {\n} n;");
10066   verifyFormat(
10067       "template <template <class T, class Y>, class Z> class X {\n} n;");
10068   verifyFormat("union Z {\n  int n;\n} x;");
10069   verifyFormat("class MACRO Z {\n} n;");
10070   verifyFormat("class MACRO(X) Z {\n} n;");
10071   verifyFormat("class __attribute__(X) Z {\n} n;");
10072   verifyFormat("class __declspec(X) Z {\n} n;");
10073   verifyFormat("class A##B##C {\n} n;");
10074   verifyFormat("class alignas(16) Z {\n} n;");
10075   verifyFormat("class MACRO(X) alignas(16) Z {\n} n;");
10076   verifyFormat("class MACROA MACRO(X) Z {\n} n;");
10077 
10078   // Redefinition from nested context:
10079   verifyFormat("class A::B::C {\n} n;");
10080 
10081   // Template definitions.
10082   verifyFormat(
10083       "template <typename F>\n"
10084       "Matcher(const Matcher<F> &Other,\n"
10085       "        typename enable_if_c<is_base_of<F, T>::value &&\n"
10086       "                             !is_same<F, T>::value>::type * = 0)\n"
10087       "    : Implementation(new ImplicitCastMatcher<F>(Other)) {}");
10088 
10089   // FIXME: This is still incorrectly handled at the formatter side.
10090   verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};");
10091   verifyFormat("int i = SomeFunction(a<b, a> b);");
10092 
10093   // FIXME:
10094   // This now gets parsed incorrectly as class definition.
10095   // verifyFormat("class A<int> f() {\n}\nint n;");
10096 
10097   // Elaborate types where incorrectly parsing the structural element would
10098   // break the indent.
10099   verifyFormat("if (true)\n"
10100                "  class X x;\n"
10101                "else\n"
10102                "  f();\n");
10103 
10104   // This is simply incomplete. Formatting is not important, but must not crash.
10105   verifyFormat("class A:");
10106 }
10107 
10108 TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
10109   EXPECT_EQ("#error Leave     all         white!!!!! space* alone!\n",
10110             format("#error Leave     all         white!!!!! space* alone!\n"));
10111   EXPECT_EQ(
10112       "#warning Leave     all         white!!!!! space* alone!\n",
10113       format("#warning Leave     all         white!!!!! space* alone!\n"));
10114   EXPECT_EQ("#error 1", format("  #  error   1"));
10115   EXPECT_EQ("#warning 1", format("  #  warning 1"));
10116 }
10117 
10118 TEST_F(FormatTest, FormatHashIfExpressions) {
10119   verifyFormat("#if AAAA && BBBB");
10120   verifyFormat("#if (AAAA && BBBB)");
10121   verifyFormat("#elif (AAAA && BBBB)");
10122   // FIXME: Come up with a better indentation for #elif.
10123   verifyFormat(
10124       "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) &&  \\\n"
10125       "    defined(BBBBBBBB)\n"
10126       "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) &&  \\\n"
10127       "    defined(BBBBBBBB)\n"
10128       "#endif",
10129       getLLVMStyleWithColumns(65));
10130 }
10131 
10132 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
10133   FormatStyle AllowsMergedIf = getGoogleStyle();
10134   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
10135       FormatStyle::SIS_WithoutElse;
10136   verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
10137   verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
10138   verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
10139   EXPECT_EQ("if (true) return 42;",
10140             format("if (true)\nreturn 42;", AllowsMergedIf));
10141   FormatStyle ShortMergedIf = AllowsMergedIf;
10142   ShortMergedIf.ColumnLimit = 25;
10143   verifyFormat("#define A \\\n"
10144                "  if (true) return 42;",
10145                ShortMergedIf);
10146   verifyFormat("#define A \\\n"
10147                "  f();    \\\n"
10148                "  if (true)\n"
10149                "#define B",
10150                ShortMergedIf);
10151   verifyFormat("#define A \\\n"
10152                "  f();    \\\n"
10153                "  if (true)\n"
10154                "g();",
10155                ShortMergedIf);
10156   verifyFormat("{\n"
10157                "#ifdef A\n"
10158                "  // Comment\n"
10159                "  if (true) continue;\n"
10160                "#endif\n"
10161                "  // Comment\n"
10162                "  if (true) continue;\n"
10163                "}",
10164                ShortMergedIf);
10165   ShortMergedIf.ColumnLimit = 33;
10166   verifyFormat("#define A \\\n"
10167                "  if constexpr (true) return 42;",
10168                ShortMergedIf);
10169   verifyFormat("#define A \\\n"
10170                "  if CONSTEXPR (true) return 42;",
10171                ShortMergedIf);
10172   ShortMergedIf.ColumnLimit = 29;
10173   verifyFormat("#define A                   \\\n"
10174                "  if (aaaaaaaaaa) return 1; \\\n"
10175                "  return 2;",
10176                ShortMergedIf);
10177   ShortMergedIf.ColumnLimit = 28;
10178   verifyFormat("#define A         \\\n"
10179                "  if (aaaaaaaaaa) \\\n"
10180                "    return 1;     \\\n"
10181                "  return 2;",
10182                ShortMergedIf);
10183   verifyFormat("#define A                \\\n"
10184                "  if constexpr (aaaaaaa) \\\n"
10185                "    return 1;            \\\n"
10186                "  return 2;",
10187                ShortMergedIf);
10188   verifyFormat("#define A                \\\n"
10189                "  if CONSTEXPR (aaaaaaa) \\\n"
10190                "    return 1;            \\\n"
10191                "  return 2;",
10192                ShortMergedIf);
10193 }
10194 
10195 TEST_F(FormatTest, FormatStarDependingOnContext) {
10196   verifyFormat("void f(int *a);");
10197   verifyFormat("void f() { f(fint * b); }");
10198   verifyFormat("class A {\n  void f(int *a);\n};");
10199   verifyFormat("class A {\n  int *a;\n};");
10200   verifyFormat("namespace a {\n"
10201                "namespace b {\n"
10202                "class A {\n"
10203                "  void f() {}\n"
10204                "  int *a;\n"
10205                "};\n"
10206                "} // namespace b\n"
10207                "} // namespace a");
10208 }
10209 
10210 TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
10211   verifyFormat("while");
10212   verifyFormat("operator");
10213 }
10214 
10215 TEST_F(FormatTest, SkipsDeeplyNestedLines) {
10216   // This code would be painfully slow to format if we didn't skip it.
10217   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
10218                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10219                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10220                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10221                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10222                    "A(1, 1)\n"
10223                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n" // 10x
10224                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10225                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10226                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10227                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10228                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10229                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10230                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10231                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10232                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1);\n");
10233   // Deeply nested part is untouched, rest is formatted.
10234   EXPECT_EQ(std::string("int i;\n") + Code + "int j;\n",
10235             format(std::string("int    i;\n") + Code + "int    j;\n",
10236                    getLLVMStyle(), SC_ExpectIncomplete));
10237 }
10238 
10239 //===----------------------------------------------------------------------===//
10240 // Objective-C tests.
10241 //===----------------------------------------------------------------------===//
10242 
10243 TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
10244   verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
10245   EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
10246             format("-(NSUInteger)indexOfObject:(id)anObject;"));
10247   EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
10248   EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
10249   EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
10250             format("-(NSInteger)Method3:(id)anObject;"));
10251   EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
10252             format("-(NSInteger)Method4:(id)anObject;"));
10253   EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
10254             format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
10255   EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
10256             format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
10257   EXPECT_EQ("- (void)sendAction:(SEL)aSelector to:(id)anObject "
10258             "forAllCells:(BOOL)flag;",
10259             format("- (void)sendAction:(SEL)aSelector to:(id)anObject "
10260                    "forAllCells:(BOOL)flag;"));
10261 
10262   // Very long objectiveC method declaration.
10263   verifyFormat("- (void)aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n"
10264                "    (SoooooooooooooooooooooomeType *)bbbbbbbbbb;");
10265   verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
10266                "                    inRange:(NSRange)range\n"
10267                "                   outRange:(NSRange)out_range\n"
10268                "                  outRange1:(NSRange)out_range1\n"
10269                "                  outRange2:(NSRange)out_range2\n"
10270                "                  outRange3:(NSRange)out_range3\n"
10271                "                  outRange4:(NSRange)out_range4\n"
10272                "                  outRange5:(NSRange)out_range5\n"
10273                "                  outRange6:(NSRange)out_range6\n"
10274                "                  outRange7:(NSRange)out_range7\n"
10275                "                  outRange8:(NSRange)out_range8\n"
10276                "                  outRange9:(NSRange)out_range9;");
10277 
10278   // When the function name has to be wrapped.
10279   FormatStyle Style = getLLVMStyle();
10280   // ObjC ignores IndentWrappedFunctionNames when wrapping methods
10281   // and always indents instead.
10282   Style.IndentWrappedFunctionNames = false;
10283   verifyFormat("- (SomeLooooooooooooooooooooongType *)\n"
10284                "    veryLooooooooooongName:(NSString)aaaaaaaaaaaaaa\n"
10285                "               anotherName:(NSString)bbbbbbbbbbbbbb {\n"
10286                "}",
10287                Style);
10288   Style.IndentWrappedFunctionNames = true;
10289   verifyFormat("- (SomeLooooooooooooooooooooongType *)\n"
10290                "    veryLooooooooooongName:(NSString)cccccccccccccc\n"
10291                "               anotherName:(NSString)dddddddddddddd {\n"
10292                "}",
10293                Style);
10294 
10295   verifyFormat("- (int)sum:(vector<int>)numbers;");
10296   verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
10297   // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
10298   // protocol lists (but not for template classes):
10299   // verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
10300 
10301   verifyFormat("- (int (*)())foo:(int (*)())f;");
10302   verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;");
10303 
10304   // If there's no return type (very rare in practice!), LLVM and Google style
10305   // agree.
10306   verifyFormat("- foo;");
10307   verifyFormat("- foo:(int)f;");
10308   verifyGoogleFormat("- foo:(int)foo;");
10309 }
10310 
10311 TEST_F(FormatTest, BreaksStringLiterals) {
10312   EXPECT_EQ("\"some text \"\n"
10313             "\"other\";",
10314             format("\"some text other\";", getLLVMStyleWithColumns(12)));
10315   EXPECT_EQ("\"some text \"\n"
10316             "\"other\";",
10317             format("\\\n\"some text other\";", getLLVMStyleWithColumns(12)));
10318   EXPECT_EQ(
10319       "#define A  \\\n"
10320       "  \"some \"  \\\n"
10321       "  \"text \"  \\\n"
10322       "  \"other\";",
10323       format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
10324   EXPECT_EQ(
10325       "#define A  \\\n"
10326       "  \"so \"    \\\n"
10327       "  \"text \"  \\\n"
10328       "  \"other\";",
10329       format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
10330 
10331   EXPECT_EQ("\"some text\"",
10332             format("\"some text\"", getLLVMStyleWithColumns(1)));
10333   EXPECT_EQ("\"some text\"",
10334             format("\"some text\"", getLLVMStyleWithColumns(11)));
10335   EXPECT_EQ("\"some \"\n"
10336             "\"text\"",
10337             format("\"some text\"", getLLVMStyleWithColumns(10)));
10338   EXPECT_EQ("\"some \"\n"
10339             "\"text\"",
10340             format("\"some text\"", getLLVMStyleWithColumns(7)));
10341   EXPECT_EQ("\"some\"\n"
10342             "\" tex\"\n"
10343             "\"t\"",
10344             format("\"some text\"", getLLVMStyleWithColumns(6)));
10345   EXPECT_EQ("\"some\"\n"
10346             "\" tex\"\n"
10347             "\" and\"",
10348             format("\"some tex and\"", getLLVMStyleWithColumns(6)));
10349   EXPECT_EQ("\"some\"\n"
10350             "\"/tex\"\n"
10351             "\"/and\"",
10352             format("\"some/tex/and\"", getLLVMStyleWithColumns(6)));
10353 
10354   EXPECT_EQ("variable =\n"
10355             "    \"long string \"\n"
10356             "    \"literal\";",
10357             format("variable = \"long string literal\";",
10358                    getLLVMStyleWithColumns(20)));
10359 
10360   EXPECT_EQ("variable = f(\n"
10361             "    \"long string \"\n"
10362             "    \"literal\",\n"
10363             "    short,\n"
10364             "    loooooooooooooooooooong);",
10365             format("variable = f(\"long string literal\", short, "
10366                    "loooooooooooooooooooong);",
10367                    getLLVMStyleWithColumns(20)));
10368 
10369   EXPECT_EQ(
10370       "f(g(\"long string \"\n"
10371       "    \"literal\"),\n"
10372       "  b);",
10373       format("f(g(\"long string literal\"), b);", getLLVMStyleWithColumns(20)));
10374   EXPECT_EQ("f(g(\"long string \"\n"
10375             "    \"literal\",\n"
10376             "    a),\n"
10377             "  b);",
10378             format("f(g(\"long string literal\", a), b);",
10379                    getLLVMStyleWithColumns(20)));
10380   EXPECT_EQ(
10381       "f(\"one two\".split(\n"
10382       "    variable));",
10383       format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
10384   EXPECT_EQ("f(\"one two three four five six \"\n"
10385             "  \"seven\".split(\n"
10386             "      really_looooong_variable));",
10387             format("f(\"one two three four five six seven\"."
10388                    "split(really_looooong_variable));",
10389                    getLLVMStyleWithColumns(33)));
10390 
10391   EXPECT_EQ("f(\"some \"\n"
10392             "  \"text\",\n"
10393             "  other);",
10394             format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
10395 
10396   // Only break as a last resort.
10397   verifyFormat(
10398       "aaaaaaaaaaaaaaaaaaaa(\n"
10399       "    aaaaaaaaaaaaaaaaaaaa,\n"
10400       "    aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
10401 
10402   EXPECT_EQ("\"splitmea\"\n"
10403             "\"trandomp\"\n"
10404             "\"oint\"",
10405             format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10)));
10406 
10407   EXPECT_EQ("\"split/\"\n"
10408             "\"pathat/\"\n"
10409             "\"slashes\"",
10410             format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
10411 
10412   EXPECT_EQ("\"split/\"\n"
10413             "\"pathat/\"\n"
10414             "\"slashes\"",
10415             format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
10416   EXPECT_EQ("\"split at \"\n"
10417             "\"spaces/at/\"\n"
10418             "\"slashes.at.any$\"\n"
10419             "\"non-alphanumeric%\"\n"
10420             "\"1111111111characte\"\n"
10421             "\"rs\"",
10422             format("\"split at "
10423                    "spaces/at/"
10424                    "slashes.at."
10425                    "any$non-"
10426                    "alphanumeric%"
10427                    "1111111111characte"
10428                    "rs\"",
10429                    getLLVMStyleWithColumns(20)));
10430 
10431   // Verify that splitting the strings understands
10432   // Style::AlwaysBreakBeforeMultilineStrings.
10433   EXPECT_EQ("aaaaaaaaaaaa(\n"
10434             "    \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n"
10435             "    \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");",
10436             format("aaaaaaaaaaaa(\"aaaaaaaaaaaaaaaaaaaaaaaaaa "
10437                    "aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa "
10438                    "aaaaaaaaaaaaaaaaaaaaaa\");",
10439                    getGoogleStyle()));
10440   EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
10441             "       \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";",
10442             format("return \"aaaaaaaaaaaaaaaaaaaaaa "
10443                    "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa "
10444                    "aaaaaaaaaaaaaaaaaaaaaa\";",
10445                    getGoogleStyle()));
10446   EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
10447             "                \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
10448             format("llvm::outs() << "
10449                    "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa"
10450                    "aaaaaaaaaaaaaaaaaaa\";"));
10451   EXPECT_EQ("ffff(\n"
10452             "    {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
10453             "     \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
10454             format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa "
10455                    "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
10456                    getGoogleStyle()));
10457 
10458   FormatStyle Style = getLLVMStyleWithColumns(12);
10459   Style.BreakStringLiterals = false;
10460   EXPECT_EQ("\"some text other\";", format("\"some text other\";", Style));
10461 
10462   FormatStyle AlignLeft = getLLVMStyleWithColumns(12);
10463   AlignLeft.AlignEscapedNewlines = FormatStyle::ENAS_Left;
10464   EXPECT_EQ("#define A \\\n"
10465             "  \"some \" \\\n"
10466             "  \"text \" \\\n"
10467             "  \"other\";",
10468             format("#define A \"some text other\";", AlignLeft));
10469 }
10470 
10471 TEST_F(FormatTest, BreaksStringLiteralsAtColumnLimit) {
10472   EXPECT_EQ("C a = \"some more \"\n"
10473             "      \"text\";",
10474             format("C a = \"some more text\";", getLLVMStyleWithColumns(18)));
10475 }
10476 
10477 TEST_F(FormatTest, FullyRemoveEmptyLines) {
10478   FormatStyle NoEmptyLines = getLLVMStyleWithColumns(80);
10479   NoEmptyLines.MaxEmptyLinesToKeep = 0;
10480   EXPECT_EQ("int i = a(b());",
10481             format("int i=a(\n\n b(\n\n\n )\n\n);", NoEmptyLines));
10482 }
10483 
10484 TEST_F(FormatTest, BreaksStringLiteralsWithTabs) {
10485   EXPECT_EQ(
10486       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
10487       "(\n"
10488       "    \"x\t\");",
10489       format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
10490              "aaaaaaa("
10491              "\"x\t\");"));
10492 }
10493 
10494 TEST_F(FormatTest, BreaksWideAndNSStringLiterals) {
10495   EXPECT_EQ(
10496       "u8\"utf8 string \"\n"
10497       "u8\"literal\";",
10498       format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16)));
10499   EXPECT_EQ(
10500       "u\"utf16 string \"\n"
10501       "u\"literal\";",
10502       format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16)));
10503   EXPECT_EQ(
10504       "U\"utf32 string \"\n"
10505       "U\"literal\";",
10506       format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16)));
10507   EXPECT_EQ("L\"wide string \"\n"
10508             "L\"literal\";",
10509             format("L\"wide string literal\";", getGoogleStyleWithColumns(16)));
10510   EXPECT_EQ("@\"NSString \"\n"
10511             "@\"literal\";",
10512             format("@\"NSString literal\";", getGoogleStyleWithColumns(19)));
10513   verifyFormat(R"(NSString *s = @"那那那那";)", getLLVMStyleWithColumns(26));
10514 
10515   // This input makes clang-format try to split the incomplete unicode escape
10516   // sequence, which used to lead to a crasher.
10517   verifyNoCrash(
10518       "aaaaaaaaaaaaaaaaaaaa = L\"\\udff\"'; // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
10519       getLLVMStyleWithColumns(60));
10520 }
10521 
10522 TEST_F(FormatTest, DoesNotBreakRawStringLiterals) {
10523   FormatStyle Style = getGoogleStyleWithColumns(15);
10524   EXPECT_EQ("R\"x(raw literal)x\";", format("R\"x(raw literal)x\";", Style));
10525   EXPECT_EQ("uR\"x(raw literal)x\";", format("uR\"x(raw literal)x\";", Style));
10526   EXPECT_EQ("LR\"x(raw literal)x\";", format("LR\"x(raw literal)x\";", Style));
10527   EXPECT_EQ("UR\"x(raw literal)x\";", format("UR\"x(raw literal)x\";", Style));
10528   EXPECT_EQ("u8R\"x(raw literal)x\";",
10529             format("u8R\"x(raw literal)x\";", Style));
10530 }
10531 
10532 TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) {
10533   FormatStyle Style = getLLVMStyleWithColumns(20);
10534   EXPECT_EQ(
10535       "_T(\"aaaaaaaaaaaaaa\")\n"
10536       "_T(\"aaaaaaaaaaaaaa\")\n"
10537       "_T(\"aaaaaaaaaaaa\")",
10538       format("  _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style));
10539   EXPECT_EQ("f(x,\n"
10540             "  _T(\"aaaaaaaaaaaa\")\n"
10541             "  _T(\"aaa\"),\n"
10542             "  z);",
10543             format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style));
10544 
10545   // FIXME: Handle embedded spaces in one iteration.
10546   //  EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n"
10547   //            "_T(\"aaaaaaaaaaaaa\")\n"
10548   //            "_T(\"aaaaaaaaaaaaa\")\n"
10549   //            "_T(\"a\")",
10550   //            format("  _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
10551   //                   getLLVMStyleWithColumns(20)));
10552   EXPECT_EQ(
10553       "_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
10554       format("  _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style));
10555   EXPECT_EQ("f(\n"
10556             "#if !TEST\n"
10557             "    _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
10558             "#endif\n"
10559             ");",
10560             format("f(\n"
10561                    "#if !TEST\n"
10562                    "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
10563                    "#endif\n"
10564                    ");"));
10565   EXPECT_EQ("f(\n"
10566             "\n"
10567             "    _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));",
10568             format("f(\n"
10569                    "\n"
10570                    "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));"));
10571 }
10572 
10573 TEST_F(FormatTest, BreaksStringLiteralOperands) {
10574   // In a function call with two operands, the second can be broken with no line
10575   // break before it.
10576   EXPECT_EQ(
10577       "func(a, \"long long \"\n"
10578       "        \"long long\");",
10579       format("func(a, \"long long long long\");", getLLVMStyleWithColumns(24)));
10580   // In a function call with three operands, the second must be broken with a
10581   // line break before it.
10582   EXPECT_EQ("func(a,\n"
10583             "     \"long long long \"\n"
10584             "     \"long\",\n"
10585             "     c);",
10586             format("func(a, \"long long long long\", c);",
10587                    getLLVMStyleWithColumns(24)));
10588   // In a function call with three operands, the third must be broken with a
10589   // line break before it.
10590   EXPECT_EQ("func(a, b,\n"
10591             "     \"long long long \"\n"
10592             "     \"long\");",
10593             format("func(a, b, \"long long long long\");",
10594                    getLLVMStyleWithColumns(24)));
10595   // In a function call with three operands, both the second and the third must
10596   // be broken with a line break before them.
10597   EXPECT_EQ("func(a,\n"
10598             "     \"long long long \"\n"
10599             "     \"long\",\n"
10600             "     \"long long long \"\n"
10601             "     \"long\");",
10602             format("func(a, \"long long long long\", \"long long long long\");",
10603                    getLLVMStyleWithColumns(24)));
10604   // In a chain of << with two operands, the second can be broken with no line
10605   // break before it.
10606   EXPECT_EQ("a << \"line line \"\n"
10607             "     \"line\";",
10608             format("a << \"line line line\";", getLLVMStyleWithColumns(20)));
10609   // In a chain of << with three operands, the second can be broken with no line
10610   // break before it.
10611   EXPECT_EQ(
10612       "abcde << \"line \"\n"
10613       "         \"line line\"\n"
10614       "      << c;",
10615       format("abcde << \"line line line\" << c;", getLLVMStyleWithColumns(20)));
10616   // In a chain of << with three operands, the third must be broken with a line
10617   // break before it.
10618   EXPECT_EQ(
10619       "a << b\n"
10620       "  << \"line line \"\n"
10621       "     \"line\";",
10622       format("a << b << \"line line line\";", getLLVMStyleWithColumns(20)));
10623   // In a chain of << with three operands, the second can be broken with no line
10624   // break before it and the third must be broken with a line break before it.
10625   EXPECT_EQ("abcd << \"line line \"\n"
10626             "        \"line\"\n"
10627             "     << \"line line \"\n"
10628             "        \"line\";",
10629             format("abcd << \"line line line\" << \"line line line\";",
10630                    getLLVMStyleWithColumns(20)));
10631   // In a chain of binary operators with two operands, the second can be broken
10632   // with no line break before it.
10633   EXPECT_EQ(
10634       "abcd + \"line line \"\n"
10635       "       \"line line\";",
10636       format("abcd + \"line line line line\";", getLLVMStyleWithColumns(20)));
10637   // In a chain of binary operators with three operands, the second must be
10638   // broken with a line break before it.
10639   EXPECT_EQ("abcd +\n"
10640             "    \"line line \"\n"
10641             "    \"line line\" +\n"
10642             "    e;",
10643             format("abcd + \"line line line line\" + e;",
10644                    getLLVMStyleWithColumns(20)));
10645   // In a function call with two operands, with AlignAfterOpenBracket enabled,
10646   // the first must be broken with a line break before it.
10647   FormatStyle Style = getLLVMStyleWithColumns(25);
10648   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
10649   EXPECT_EQ("someFunction(\n"
10650             "    \"long long long \"\n"
10651             "    \"long\",\n"
10652             "    a);",
10653             format("someFunction(\"long long long long\", a);", Style));
10654 }
10655 
10656 TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) {
10657   EXPECT_EQ(
10658       "aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
10659       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
10660       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
10661       format("aaaaaaaaaaa  =  \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
10662              "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
10663              "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";"));
10664 }
10665 
10666 TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) {
10667   EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);",
10668             format("f(g(R\"x(raw literal)x\",   a), b);", getGoogleStyle()));
10669   EXPECT_EQ("fffffffffff(g(R\"x(\n"
10670             "multiline raw string literal xxxxxxxxxxxxxx\n"
10671             ")x\",\n"
10672             "              a),\n"
10673             "            b);",
10674             format("fffffffffff(g(R\"x(\n"
10675                    "multiline raw string literal xxxxxxxxxxxxxx\n"
10676                    ")x\", a), b);",
10677                    getGoogleStyleWithColumns(20)));
10678   EXPECT_EQ("fffffffffff(\n"
10679             "    g(R\"x(qqq\n"
10680             "multiline raw string literal xxxxxxxxxxxxxx\n"
10681             ")x\",\n"
10682             "      a),\n"
10683             "    b);",
10684             format("fffffffffff(g(R\"x(qqq\n"
10685                    "multiline raw string literal xxxxxxxxxxxxxx\n"
10686                    ")x\", a), b);",
10687                    getGoogleStyleWithColumns(20)));
10688 
10689   EXPECT_EQ("fffffffffff(R\"x(\n"
10690             "multiline raw string literal xxxxxxxxxxxxxx\n"
10691             ")x\");",
10692             format("fffffffffff(R\"x(\n"
10693                    "multiline raw string literal xxxxxxxxxxxxxx\n"
10694                    ")x\");",
10695                    getGoogleStyleWithColumns(20)));
10696   EXPECT_EQ("fffffffffff(R\"x(\n"
10697             "multiline raw string literal xxxxxxxxxxxxxx\n"
10698             ")x\" + bbbbbb);",
10699             format("fffffffffff(R\"x(\n"
10700                    "multiline raw string literal xxxxxxxxxxxxxx\n"
10701                    ")x\" +   bbbbbb);",
10702                    getGoogleStyleWithColumns(20)));
10703   EXPECT_EQ("fffffffffff(\n"
10704             "    R\"x(\n"
10705             "multiline raw string literal xxxxxxxxxxxxxx\n"
10706             ")x\" +\n"
10707             "    bbbbbb);",
10708             format("fffffffffff(\n"
10709                    " R\"x(\n"
10710                    "multiline raw string literal xxxxxxxxxxxxxx\n"
10711                    ")x\" + bbbbbb);",
10712                    getGoogleStyleWithColumns(20)));
10713   EXPECT_EQ("fffffffffff(R\"(single line raw string)\" + bbbbbb);",
10714             format("fffffffffff(\n"
10715                    " R\"(single line raw string)\" + bbbbbb);"));
10716 }
10717 
10718 TEST_F(FormatTest, SkipsUnknownStringLiterals) {
10719   verifyFormat("string a = \"unterminated;");
10720   EXPECT_EQ("function(\"unterminated,\n"
10721             "         OtherParameter);",
10722             format("function(  \"unterminated,\n"
10723                    "    OtherParameter);"));
10724 }
10725 
10726 TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) {
10727   FormatStyle Style = getLLVMStyle();
10728   Style.Standard = FormatStyle::LS_Cpp03;
10729   EXPECT_EQ("#define x(_a) printf(\"foo\" _a);",
10730             format("#define x(_a) printf(\"foo\"_a);", Style));
10731 }
10732 
10733 TEST_F(FormatTest, CppLexVersion) {
10734   FormatStyle Style = getLLVMStyle();
10735   // Formatting of x * y differs if x is a type.
10736   verifyFormat("void foo() { MACRO(a * b); }", Style);
10737   verifyFormat("void foo() { MACRO(int *b); }", Style);
10738 
10739   // LLVM style uses latest lexer.
10740   verifyFormat("void foo() { MACRO(char8_t *b); }", Style);
10741   Style.Standard = FormatStyle::LS_Cpp17;
10742   // But in c++17, char8_t isn't a keyword.
10743   verifyFormat("void foo() { MACRO(char8_t * b); }", Style);
10744 }
10745 
10746 TEST_F(FormatTest, UnderstandsCpp1y) { verifyFormat("int bi{1'000'000};"); }
10747 
10748 TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) {
10749   EXPECT_EQ("someFunction(\"aaabbbcccd\"\n"
10750             "             \"ddeeefff\");",
10751             format("someFunction(\"aaabbbcccdddeeefff\");",
10752                    getLLVMStyleWithColumns(25)));
10753   EXPECT_EQ("someFunction1234567890(\n"
10754             "    \"aaabbbcccdddeeefff\");",
10755             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
10756                    getLLVMStyleWithColumns(26)));
10757   EXPECT_EQ("someFunction1234567890(\n"
10758             "    \"aaabbbcccdddeeeff\"\n"
10759             "    \"f\");",
10760             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
10761                    getLLVMStyleWithColumns(25)));
10762   EXPECT_EQ("someFunction1234567890(\n"
10763             "    \"aaabbbcccdddeeeff\"\n"
10764             "    \"f\");",
10765             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
10766                    getLLVMStyleWithColumns(24)));
10767   EXPECT_EQ("someFunction(\n"
10768             "    \"aaabbbcc ddde \"\n"
10769             "    \"efff\");",
10770             format("someFunction(\"aaabbbcc ddde efff\");",
10771                    getLLVMStyleWithColumns(25)));
10772   EXPECT_EQ("someFunction(\"aaabbbccc \"\n"
10773             "             \"ddeeefff\");",
10774             format("someFunction(\"aaabbbccc ddeeefff\");",
10775                    getLLVMStyleWithColumns(25)));
10776   EXPECT_EQ("someFunction1234567890(\n"
10777             "    \"aaabb \"\n"
10778             "    \"cccdddeeefff\");",
10779             format("someFunction1234567890(\"aaabb cccdddeeefff\");",
10780                    getLLVMStyleWithColumns(25)));
10781   EXPECT_EQ("#define A          \\\n"
10782             "  string s =       \\\n"
10783             "      \"123456789\"  \\\n"
10784             "      \"0\";         \\\n"
10785             "  int i;",
10786             format("#define A string s = \"1234567890\"; int i;",
10787                    getLLVMStyleWithColumns(20)));
10788   EXPECT_EQ("someFunction(\n"
10789             "    \"aaabbbcc \"\n"
10790             "    \"dddeeefff\");",
10791             format("someFunction(\"aaabbbcc dddeeefff\");",
10792                    getLLVMStyleWithColumns(25)));
10793 }
10794 
10795 TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) {
10796   EXPECT_EQ("\"\\a\"", format("\"\\a\"", getLLVMStyleWithColumns(3)));
10797   EXPECT_EQ("\"\\\"", format("\"\\\"", getLLVMStyleWithColumns(2)));
10798   EXPECT_EQ("\"test\"\n"
10799             "\"\\n\"",
10800             format("\"test\\n\"", getLLVMStyleWithColumns(7)));
10801   EXPECT_EQ("\"tes\\\\\"\n"
10802             "\"n\"",
10803             format("\"tes\\\\n\"", getLLVMStyleWithColumns(7)));
10804   EXPECT_EQ("\"\\\\\\\\\"\n"
10805             "\"\\n\"",
10806             format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7)));
10807   EXPECT_EQ("\"\\uff01\"", format("\"\\uff01\"", getLLVMStyleWithColumns(7)));
10808   EXPECT_EQ("\"\\uff01\"\n"
10809             "\"test\"",
10810             format("\"\\uff01test\"", getLLVMStyleWithColumns(8)));
10811   EXPECT_EQ("\"\\Uff01ff02\"",
10812             format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11)));
10813   EXPECT_EQ("\"\\x000000000001\"\n"
10814             "\"next\"",
10815             format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16)));
10816   EXPECT_EQ("\"\\x000000000001next\"",
10817             format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15)));
10818   EXPECT_EQ("\"\\x000000000001\"",
10819             format("\"\\x000000000001\"", getLLVMStyleWithColumns(7)));
10820   EXPECT_EQ("\"test\"\n"
10821             "\"\\000000\"\n"
10822             "\"000001\"",
10823             format("\"test\\000000000001\"", getLLVMStyleWithColumns(9)));
10824   EXPECT_EQ("\"test\\000\"\n"
10825             "\"00000000\"\n"
10826             "\"1\"",
10827             format("\"test\\000000000001\"", getLLVMStyleWithColumns(10)));
10828 }
10829 
10830 TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) {
10831   verifyFormat("void f() {\n"
10832                "  return g() {}\n"
10833                "  void h() {}");
10834   verifyFormat("int a[] = {void forgot_closing_brace(){f();\n"
10835                "g();\n"
10836                "}");
10837 }
10838 
10839 TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) {
10840   verifyFormat(
10841       "void f() { return C{param1, param2}.SomeCall(param1, param2); }");
10842 }
10843 
10844 TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) {
10845   verifyFormat("class X {\n"
10846                "  void f() {\n"
10847                "  }\n"
10848                "};",
10849                getLLVMStyleWithColumns(12));
10850 }
10851 
10852 TEST_F(FormatTest, ConfigurableIndentWidth) {
10853   FormatStyle EightIndent = getLLVMStyleWithColumns(18);
10854   EightIndent.IndentWidth = 8;
10855   EightIndent.ContinuationIndentWidth = 8;
10856   verifyFormat("void f() {\n"
10857                "        someFunction();\n"
10858                "        if (true) {\n"
10859                "                f();\n"
10860                "        }\n"
10861                "}",
10862                EightIndent);
10863   verifyFormat("class X {\n"
10864                "        void f() {\n"
10865                "        }\n"
10866                "};",
10867                EightIndent);
10868   verifyFormat("int x[] = {\n"
10869                "        call(),\n"
10870                "        call()};",
10871                EightIndent);
10872 }
10873 
10874 TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) {
10875   verifyFormat("double\n"
10876                "f();",
10877                getLLVMStyleWithColumns(8));
10878 }
10879 
10880 TEST_F(FormatTest, ConfigurableUseOfTab) {
10881   FormatStyle Tab = getLLVMStyleWithColumns(42);
10882   Tab.IndentWidth = 8;
10883   Tab.UseTab = FormatStyle::UT_Always;
10884   Tab.AlignEscapedNewlines = FormatStyle::ENAS_Left;
10885 
10886   EXPECT_EQ("if (aaaaaaaa && // q\n"
10887             "    bb)\t\t// w\n"
10888             "\t;",
10889             format("if (aaaaaaaa &&// q\n"
10890                    "bb)// w\n"
10891                    ";",
10892                    Tab));
10893   EXPECT_EQ("if (aaa && bbb) // w\n"
10894             "\t;",
10895             format("if(aaa&&bbb)// w\n"
10896                    ";",
10897                    Tab));
10898 
10899   verifyFormat("class X {\n"
10900                "\tvoid f() {\n"
10901                "\t\tsomeFunction(parameter1,\n"
10902                "\t\t\t     parameter2);\n"
10903                "\t}\n"
10904                "};",
10905                Tab);
10906   verifyFormat("#define A                        \\\n"
10907                "\tvoid f() {               \\\n"
10908                "\t\tsomeFunction(    \\\n"
10909                "\t\t    parameter1,  \\\n"
10910                "\t\t    parameter2); \\\n"
10911                "\t}",
10912                Tab);
10913   verifyFormat("int a;\t      // x\n"
10914                "int bbbbbbbb; // x\n",
10915                Tab);
10916 
10917   Tab.TabWidth = 4;
10918   Tab.IndentWidth = 8;
10919   verifyFormat("class TabWidth4Indent8 {\n"
10920                "\t\tvoid f() {\n"
10921                "\t\t\t\tsomeFunction(parameter1,\n"
10922                "\t\t\t\t\t\t\t parameter2);\n"
10923                "\t\t}\n"
10924                "};",
10925                Tab);
10926 
10927   Tab.TabWidth = 4;
10928   Tab.IndentWidth = 4;
10929   verifyFormat("class TabWidth4Indent4 {\n"
10930                "\tvoid f() {\n"
10931                "\t\tsomeFunction(parameter1,\n"
10932                "\t\t\t\t\t parameter2);\n"
10933                "\t}\n"
10934                "};",
10935                Tab);
10936 
10937   Tab.TabWidth = 8;
10938   Tab.IndentWidth = 4;
10939   verifyFormat("class TabWidth8Indent4 {\n"
10940                "    void f() {\n"
10941                "\tsomeFunction(parameter1,\n"
10942                "\t\t     parameter2);\n"
10943                "    }\n"
10944                "};",
10945                Tab);
10946 
10947   Tab.TabWidth = 8;
10948   Tab.IndentWidth = 8;
10949   EXPECT_EQ("/*\n"
10950             "\t      a\t\tcomment\n"
10951             "\t      in multiple lines\n"
10952             "       */",
10953             format("   /*\t \t \n"
10954                    " \t \t a\t\tcomment\t \t\n"
10955                    " \t \t in multiple lines\t\n"
10956                    " \t  */",
10957                    Tab));
10958 
10959   Tab.UseTab = FormatStyle::UT_ForIndentation;
10960   verifyFormat("{\n"
10961                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
10962                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
10963                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
10964                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
10965                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
10966                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
10967                "};",
10968                Tab);
10969   verifyFormat("enum AA {\n"
10970                "\ta1, // Force multiple lines\n"
10971                "\ta2,\n"
10972                "\ta3\n"
10973                "};",
10974                Tab);
10975   EXPECT_EQ("if (aaaaaaaa && // q\n"
10976             "    bb)         // w\n"
10977             "\t;",
10978             format("if (aaaaaaaa &&// q\n"
10979                    "bb)// w\n"
10980                    ";",
10981                    Tab));
10982   verifyFormat("class X {\n"
10983                "\tvoid f() {\n"
10984                "\t\tsomeFunction(parameter1,\n"
10985                "\t\t             parameter2);\n"
10986                "\t}\n"
10987                "};",
10988                Tab);
10989   verifyFormat("{\n"
10990                "\tQ(\n"
10991                "\t    {\n"
10992                "\t\t    int a;\n"
10993                "\t\t    someFunction(aaaaaaaa,\n"
10994                "\t\t                 bbbbbbb);\n"
10995                "\t    },\n"
10996                "\t    p);\n"
10997                "}",
10998                Tab);
10999   EXPECT_EQ("{\n"
11000             "\t/* aaaa\n"
11001             "\t   bbbb */\n"
11002             "}",
11003             format("{\n"
11004                    "/* aaaa\n"
11005                    "   bbbb */\n"
11006                    "}",
11007                    Tab));
11008   EXPECT_EQ("{\n"
11009             "\t/*\n"
11010             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11011             "\t  bbbbbbbbbbbbb\n"
11012             "\t*/\n"
11013             "}",
11014             format("{\n"
11015                    "/*\n"
11016                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11017                    "*/\n"
11018                    "}",
11019                    Tab));
11020   EXPECT_EQ("{\n"
11021             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11022             "\t// bbbbbbbbbbbbb\n"
11023             "}",
11024             format("{\n"
11025                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11026                    "}",
11027                    Tab));
11028   EXPECT_EQ("{\n"
11029             "\t/*\n"
11030             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11031             "\t  bbbbbbbbbbbbb\n"
11032             "\t*/\n"
11033             "}",
11034             format("{\n"
11035                    "\t/*\n"
11036                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11037                    "\t*/\n"
11038                    "}",
11039                    Tab));
11040   EXPECT_EQ("{\n"
11041             "\t/*\n"
11042             "\n"
11043             "\t*/\n"
11044             "}",
11045             format("{\n"
11046                    "\t/*\n"
11047                    "\n"
11048                    "\t*/\n"
11049                    "}",
11050                    Tab));
11051   EXPECT_EQ("{\n"
11052             "\t/*\n"
11053             " asdf\n"
11054             "\t*/\n"
11055             "}",
11056             format("{\n"
11057                    "\t/*\n"
11058                    " asdf\n"
11059                    "\t*/\n"
11060                    "}",
11061                    Tab));
11062 
11063   Tab.UseTab = FormatStyle::UT_Never;
11064   EXPECT_EQ("/*\n"
11065             "              a\t\tcomment\n"
11066             "              in multiple lines\n"
11067             "       */",
11068             format("   /*\t \t \n"
11069                    " \t \t a\t\tcomment\t \t\n"
11070                    " \t \t in multiple lines\t\n"
11071                    " \t  */",
11072                    Tab));
11073   EXPECT_EQ("/* some\n"
11074             "   comment */",
11075             format(" \t \t /* some\n"
11076                    " \t \t    comment */",
11077                    Tab));
11078   EXPECT_EQ("int a; /* some\n"
11079             "   comment */",
11080             format(" \t \t int a; /* some\n"
11081                    " \t \t    comment */",
11082                    Tab));
11083 
11084   EXPECT_EQ("int a; /* some\n"
11085             "comment */",
11086             format(" \t \t int\ta; /* some\n"
11087                    " \t \t    comment */",
11088                    Tab));
11089   EXPECT_EQ("f(\"\t\t\"); /* some\n"
11090             "    comment */",
11091             format(" \t \t f(\"\t\t\"); /* some\n"
11092                    " \t \t    comment */",
11093                    Tab));
11094   EXPECT_EQ("{\n"
11095             "        /*\n"
11096             "         * Comment\n"
11097             "         */\n"
11098             "        int i;\n"
11099             "}",
11100             format("{\n"
11101                    "\t/*\n"
11102                    "\t * Comment\n"
11103                    "\t */\n"
11104                    "\t int i;\n"
11105                    "}",
11106                    Tab));
11107 
11108   Tab.UseTab = FormatStyle::UT_ForContinuationAndIndentation;
11109   Tab.TabWidth = 8;
11110   Tab.IndentWidth = 8;
11111   EXPECT_EQ("if (aaaaaaaa && // q\n"
11112             "    bb)         // w\n"
11113             "\t;",
11114             format("if (aaaaaaaa &&// q\n"
11115                    "bb)// w\n"
11116                    ";",
11117                    Tab));
11118   EXPECT_EQ("if (aaa && bbb) // w\n"
11119             "\t;",
11120             format("if(aaa&&bbb)// w\n"
11121                    ";",
11122                    Tab));
11123   verifyFormat("class X {\n"
11124                "\tvoid f() {\n"
11125                "\t\tsomeFunction(parameter1,\n"
11126                "\t\t\t     parameter2);\n"
11127                "\t}\n"
11128                "};",
11129                Tab);
11130   verifyFormat("#define A                        \\\n"
11131                "\tvoid f() {               \\\n"
11132                "\t\tsomeFunction(    \\\n"
11133                "\t\t    parameter1,  \\\n"
11134                "\t\t    parameter2); \\\n"
11135                "\t}",
11136                Tab);
11137   Tab.TabWidth = 4;
11138   Tab.IndentWidth = 8;
11139   verifyFormat("class TabWidth4Indent8 {\n"
11140                "\t\tvoid f() {\n"
11141                "\t\t\t\tsomeFunction(parameter1,\n"
11142                "\t\t\t\t\t\t\t parameter2);\n"
11143                "\t\t}\n"
11144                "};",
11145                Tab);
11146   Tab.TabWidth = 4;
11147   Tab.IndentWidth = 4;
11148   verifyFormat("class TabWidth4Indent4 {\n"
11149                "\tvoid f() {\n"
11150                "\t\tsomeFunction(parameter1,\n"
11151                "\t\t\t\t\t parameter2);\n"
11152                "\t}\n"
11153                "};",
11154                Tab);
11155   Tab.TabWidth = 8;
11156   Tab.IndentWidth = 4;
11157   verifyFormat("class TabWidth8Indent4 {\n"
11158                "    void f() {\n"
11159                "\tsomeFunction(parameter1,\n"
11160                "\t\t     parameter2);\n"
11161                "    }\n"
11162                "};",
11163                Tab);
11164   Tab.TabWidth = 8;
11165   Tab.IndentWidth = 8;
11166   EXPECT_EQ("/*\n"
11167             "\t      a\t\tcomment\n"
11168             "\t      in multiple lines\n"
11169             "       */",
11170             format("   /*\t \t \n"
11171                    " \t \t a\t\tcomment\t \t\n"
11172                    " \t \t in multiple lines\t\n"
11173                    " \t  */",
11174                    Tab));
11175   verifyFormat("{\n"
11176                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11177                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11178                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11179                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11180                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11181                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11182                "};",
11183                Tab);
11184   verifyFormat("enum AA {\n"
11185                "\ta1, // Force multiple lines\n"
11186                "\ta2,\n"
11187                "\ta3\n"
11188                "};",
11189                Tab);
11190   EXPECT_EQ("if (aaaaaaaa && // q\n"
11191             "    bb)         // w\n"
11192             "\t;",
11193             format("if (aaaaaaaa &&// q\n"
11194                    "bb)// w\n"
11195                    ";",
11196                    Tab));
11197   verifyFormat("class X {\n"
11198                "\tvoid f() {\n"
11199                "\t\tsomeFunction(parameter1,\n"
11200                "\t\t\t     parameter2);\n"
11201                "\t}\n"
11202                "};",
11203                Tab);
11204   verifyFormat("{\n"
11205                "\tQ(\n"
11206                "\t    {\n"
11207                "\t\t    int a;\n"
11208                "\t\t    someFunction(aaaaaaaa,\n"
11209                "\t\t\t\t bbbbbbb);\n"
11210                "\t    },\n"
11211                "\t    p);\n"
11212                "}",
11213                Tab);
11214   EXPECT_EQ("{\n"
11215             "\t/* aaaa\n"
11216             "\t   bbbb */\n"
11217             "}",
11218             format("{\n"
11219                    "/* aaaa\n"
11220                    "   bbbb */\n"
11221                    "}",
11222                    Tab));
11223   EXPECT_EQ("{\n"
11224             "\t/*\n"
11225             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11226             "\t  bbbbbbbbbbbbb\n"
11227             "\t*/\n"
11228             "}",
11229             format("{\n"
11230                    "/*\n"
11231                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11232                    "*/\n"
11233                    "}",
11234                    Tab));
11235   EXPECT_EQ("{\n"
11236             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11237             "\t// bbbbbbbbbbbbb\n"
11238             "}",
11239             format("{\n"
11240                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11241                    "}",
11242                    Tab));
11243   EXPECT_EQ("{\n"
11244             "\t/*\n"
11245             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11246             "\t  bbbbbbbbbbbbb\n"
11247             "\t*/\n"
11248             "}",
11249             format("{\n"
11250                    "\t/*\n"
11251                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11252                    "\t*/\n"
11253                    "}",
11254                    Tab));
11255   EXPECT_EQ("{\n"
11256             "\t/*\n"
11257             "\n"
11258             "\t*/\n"
11259             "}",
11260             format("{\n"
11261                    "\t/*\n"
11262                    "\n"
11263                    "\t*/\n"
11264                    "}",
11265                    Tab));
11266   EXPECT_EQ("{\n"
11267             "\t/*\n"
11268             " asdf\n"
11269             "\t*/\n"
11270             "}",
11271             format("{\n"
11272                    "\t/*\n"
11273                    " asdf\n"
11274                    "\t*/\n"
11275                    "}",
11276                    Tab));
11277   EXPECT_EQ("/* some\n"
11278             "   comment */",
11279             format(" \t \t /* some\n"
11280                    " \t \t    comment */",
11281                    Tab));
11282   EXPECT_EQ("int a; /* some\n"
11283             "   comment */",
11284             format(" \t \t int a; /* some\n"
11285                    " \t \t    comment */",
11286                    Tab));
11287   EXPECT_EQ("int a; /* some\n"
11288             "comment */",
11289             format(" \t \t int\ta; /* some\n"
11290                    " \t \t    comment */",
11291                    Tab));
11292   EXPECT_EQ("f(\"\t\t\"); /* some\n"
11293             "    comment */",
11294             format(" \t \t f(\"\t\t\"); /* some\n"
11295                    " \t \t    comment */",
11296                    Tab));
11297   EXPECT_EQ("{\n"
11298             "\t/*\n"
11299             "\t * Comment\n"
11300             "\t */\n"
11301             "\tint i;\n"
11302             "}",
11303             format("{\n"
11304                    "\t/*\n"
11305                    "\t * Comment\n"
11306                    "\t */\n"
11307                    "\t int i;\n"
11308                    "}",
11309                    Tab));
11310   Tab.TabWidth = 2;
11311   Tab.IndentWidth = 2;
11312   EXPECT_EQ("{\n"
11313             "\t/* aaaa\n"
11314             "\t\t bbbb */\n"
11315             "}",
11316             format("{\n"
11317                    "/* aaaa\n"
11318                    "\t bbbb */\n"
11319                    "}",
11320                    Tab));
11321   EXPECT_EQ("{\n"
11322             "\t/*\n"
11323             "\t\taaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11324             "\t\tbbbbbbbbbbbbb\n"
11325             "\t*/\n"
11326             "}",
11327             format("{\n"
11328                    "/*\n"
11329                    "\taaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11330                    "*/\n"
11331                    "}",
11332                    Tab));
11333   Tab.AlignConsecutiveAssignments = true;
11334   Tab.AlignConsecutiveDeclarations = true;
11335   Tab.TabWidth = 4;
11336   Tab.IndentWidth = 4;
11337   verifyFormat("class Assign {\n"
11338                "\tvoid f() {\n"
11339                "\t\tint         x      = 123;\n"
11340                "\t\tint         random = 4;\n"
11341                "\t\tstd::string alphabet =\n"
11342                "\t\t\t\"abcdefghijklmnopqrstuvwxyz\";\n"
11343                "\t}\n"
11344                "};",
11345                Tab);
11346 
11347   Tab.UseTab = FormatStyle::UT_AlignWithSpaces;
11348   Tab.TabWidth = 8;
11349   Tab.IndentWidth = 8;
11350   EXPECT_EQ("if (aaaaaaaa && // q\n"
11351             "    bb)         // w\n"
11352             "\t;",
11353             format("if (aaaaaaaa &&// q\n"
11354                    "bb)// w\n"
11355                    ";",
11356                    Tab));
11357   EXPECT_EQ("if (aaa && bbb) // w\n"
11358             "\t;",
11359             format("if(aaa&&bbb)// w\n"
11360                    ";",
11361                    Tab));
11362   verifyFormat("class X {\n"
11363                "\tvoid f() {\n"
11364                "\t\tsomeFunction(parameter1,\n"
11365                "\t\t             parameter2);\n"
11366                "\t}\n"
11367                "};",
11368                Tab);
11369   verifyFormat("#define A                        \\\n"
11370                "\tvoid f() {               \\\n"
11371                "\t\tsomeFunction(    \\\n"
11372                "\t\t    parameter1,  \\\n"
11373                "\t\t    parameter2); \\\n"
11374                "\t}",
11375                Tab);
11376   Tab.TabWidth = 4;
11377   Tab.IndentWidth = 8;
11378   verifyFormat("class TabWidth4Indent8 {\n"
11379                "\t\tvoid f() {\n"
11380                "\t\t\t\tsomeFunction(parameter1,\n"
11381                "\t\t\t\t             parameter2);\n"
11382                "\t\t}\n"
11383                "};",
11384                Tab);
11385   Tab.TabWidth = 4;
11386   Tab.IndentWidth = 4;
11387   verifyFormat("class TabWidth4Indent4 {\n"
11388                "\tvoid f() {\n"
11389                "\t\tsomeFunction(parameter1,\n"
11390                "\t\t             parameter2);\n"
11391                "\t}\n"
11392                "};",
11393                Tab);
11394   Tab.TabWidth = 8;
11395   Tab.IndentWidth = 4;
11396   verifyFormat("class TabWidth8Indent4 {\n"
11397                "    void f() {\n"
11398                "\tsomeFunction(parameter1,\n"
11399                "\t             parameter2);\n"
11400                "    }\n"
11401                "};",
11402                Tab);
11403   Tab.TabWidth = 8;
11404   Tab.IndentWidth = 8;
11405   EXPECT_EQ("/*\n"
11406             "              a\t\tcomment\n"
11407             "              in multiple lines\n"
11408             "       */",
11409             format("   /*\t \t \n"
11410                    " \t \t a\t\tcomment\t \t\n"
11411                    " \t \t in multiple lines\t\n"
11412                    " \t  */",
11413                    Tab));
11414   verifyFormat("{\n"
11415                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11416                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11417                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11418                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11419                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11420                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11421                "};",
11422                Tab);
11423   verifyFormat("enum AA {\n"
11424                "\ta1, // Force multiple lines\n"
11425                "\ta2,\n"
11426                "\ta3\n"
11427                "};",
11428                Tab);
11429   EXPECT_EQ("if (aaaaaaaa && // q\n"
11430             "    bb)         // w\n"
11431             "\t;",
11432             format("if (aaaaaaaa &&// q\n"
11433                    "bb)// w\n"
11434                    ";",
11435                    Tab));
11436   verifyFormat("class X {\n"
11437                "\tvoid f() {\n"
11438                "\t\tsomeFunction(parameter1,\n"
11439                "\t\t             parameter2);\n"
11440                "\t}\n"
11441                "};",
11442                Tab);
11443   verifyFormat("{\n"
11444                "\tQ(\n"
11445                "\t    {\n"
11446                "\t\t    int a;\n"
11447                "\t\t    someFunction(aaaaaaaa,\n"
11448                "\t\t                 bbbbbbb);\n"
11449                "\t    },\n"
11450                "\t    p);\n"
11451                "}",
11452                Tab);
11453   EXPECT_EQ("{\n"
11454             "\t/* aaaa\n"
11455             "\t   bbbb */\n"
11456             "}",
11457             format("{\n"
11458                    "/* aaaa\n"
11459                    "   bbbb */\n"
11460                    "}",
11461                    Tab));
11462   EXPECT_EQ("{\n"
11463             "\t/*\n"
11464             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11465             "\t  bbbbbbbbbbbbb\n"
11466             "\t*/\n"
11467             "}",
11468             format("{\n"
11469                    "/*\n"
11470                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11471                    "*/\n"
11472                    "}",
11473                    Tab));
11474   EXPECT_EQ("{\n"
11475             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11476             "\t// bbbbbbbbbbbbb\n"
11477             "}",
11478             format("{\n"
11479                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11480                    "}",
11481                    Tab));
11482   EXPECT_EQ("{\n"
11483             "\t/*\n"
11484             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11485             "\t  bbbbbbbbbbbbb\n"
11486             "\t*/\n"
11487             "}",
11488             format("{\n"
11489                    "\t/*\n"
11490                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11491                    "\t*/\n"
11492                    "}",
11493                    Tab));
11494   EXPECT_EQ("{\n"
11495             "\t/*\n"
11496             "\n"
11497             "\t*/\n"
11498             "}",
11499             format("{\n"
11500                    "\t/*\n"
11501                    "\n"
11502                    "\t*/\n"
11503                    "}",
11504                    Tab));
11505   EXPECT_EQ("{\n"
11506             "\t/*\n"
11507             " asdf\n"
11508             "\t*/\n"
11509             "}",
11510             format("{\n"
11511                    "\t/*\n"
11512                    " asdf\n"
11513                    "\t*/\n"
11514                    "}",
11515                    Tab));
11516   EXPECT_EQ("/* some\n"
11517             "   comment */",
11518             format(" \t \t /* some\n"
11519                    " \t \t    comment */",
11520                    Tab));
11521   EXPECT_EQ("int a; /* some\n"
11522             "   comment */",
11523             format(" \t \t int a; /* some\n"
11524                    " \t \t    comment */",
11525                    Tab));
11526   EXPECT_EQ("int a; /* some\n"
11527             "comment */",
11528             format(" \t \t int\ta; /* some\n"
11529                    " \t \t    comment */",
11530                    Tab));
11531   EXPECT_EQ("f(\"\t\t\"); /* some\n"
11532             "    comment */",
11533             format(" \t \t f(\"\t\t\"); /* some\n"
11534                    " \t \t    comment */",
11535                    Tab));
11536   EXPECT_EQ("{\n"
11537             "\t/*\n"
11538             "\t * Comment\n"
11539             "\t */\n"
11540             "\tint i;\n"
11541             "}",
11542             format("{\n"
11543                    "\t/*\n"
11544                    "\t * Comment\n"
11545                    "\t */\n"
11546                    "\t int i;\n"
11547                    "}",
11548                    Tab));
11549   Tab.TabWidth = 2;
11550   Tab.IndentWidth = 2;
11551   EXPECT_EQ("{\n"
11552             "\t/* aaaa\n"
11553             "\t   bbbb */\n"
11554             "}",
11555             format("{\n"
11556                    "/* aaaa\n"
11557                    "   bbbb */\n"
11558                    "}",
11559                    Tab));
11560   EXPECT_EQ("{\n"
11561             "\t/*\n"
11562             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11563             "\t  bbbbbbbbbbbbb\n"
11564             "\t*/\n"
11565             "}",
11566             format("{\n"
11567                    "/*\n"
11568                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11569                    "*/\n"
11570                    "}",
11571                    Tab));
11572   Tab.AlignConsecutiveAssignments = true;
11573   Tab.AlignConsecutiveDeclarations = true;
11574   Tab.TabWidth = 4;
11575   Tab.IndentWidth = 4;
11576   verifyFormat("class Assign {\n"
11577                "\tvoid f() {\n"
11578                "\t\tint         x      = 123;\n"
11579                "\t\tint         random = 4;\n"
11580                "\t\tstd::string alphabet =\n"
11581                "\t\t\t\"abcdefghijklmnopqrstuvwxyz\";\n"
11582                "\t}\n"
11583                "};",
11584                Tab);
11585   Tab.AlignOperands = FormatStyle::OAS_Align;
11586   verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb +\n"
11587                "                 cccccccccccccccccccc;",
11588                Tab);
11589   // no alignment
11590   verifyFormat("int aaaaaaaaaa =\n"
11591                "\tbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
11592                Tab);
11593   verifyFormat("return aaaaaaaaaaaaaaaa ? 111111111111111\n"
11594                "       : bbbbbbbbbbbbbb ? 222222222222222\n"
11595                "                        : 333333333333333;",
11596                Tab);
11597   Tab.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
11598   Tab.AlignOperands = FormatStyle::OAS_AlignAfterOperator;
11599   verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb\n"
11600                "               + cccccccccccccccccccc;",
11601                Tab);
11602 }
11603 
11604 TEST_F(FormatTest, ZeroTabWidth) {
11605   FormatStyle Tab = getLLVMStyleWithColumns(42);
11606   Tab.IndentWidth = 8;
11607   Tab.UseTab = FormatStyle::UT_Never;
11608   Tab.TabWidth = 0;
11609   EXPECT_EQ("void a(){\n"
11610             "    // line starts with '\t'\n"
11611             "};",
11612             format("void a(){\n"
11613                    "\t// line starts with '\t'\n"
11614                    "};",
11615                    Tab));
11616 
11617   EXPECT_EQ("void a(){\n"
11618             "    // line starts with '\t'\n"
11619             "};",
11620             format("void a(){\n"
11621                    "\t\t// line starts with '\t'\n"
11622                    "};",
11623                    Tab));
11624 
11625   Tab.UseTab = FormatStyle::UT_ForIndentation;
11626   EXPECT_EQ("void a(){\n"
11627             "    // line starts with '\t'\n"
11628             "};",
11629             format("void a(){\n"
11630                    "\t// line starts with '\t'\n"
11631                    "};",
11632                    Tab));
11633 
11634   EXPECT_EQ("void a(){\n"
11635             "    // line starts with '\t'\n"
11636             "};",
11637             format("void a(){\n"
11638                    "\t\t// line starts with '\t'\n"
11639                    "};",
11640                    Tab));
11641 
11642   Tab.UseTab = FormatStyle::UT_ForContinuationAndIndentation;
11643   EXPECT_EQ("void a(){\n"
11644             "    // line starts with '\t'\n"
11645             "};",
11646             format("void a(){\n"
11647                    "\t// line starts with '\t'\n"
11648                    "};",
11649                    Tab));
11650 
11651   EXPECT_EQ("void a(){\n"
11652             "    // line starts with '\t'\n"
11653             "};",
11654             format("void a(){\n"
11655                    "\t\t// line starts with '\t'\n"
11656                    "};",
11657                    Tab));
11658 
11659   Tab.UseTab = FormatStyle::UT_AlignWithSpaces;
11660   EXPECT_EQ("void a(){\n"
11661             "    // line starts with '\t'\n"
11662             "};",
11663             format("void a(){\n"
11664                    "\t// line starts with '\t'\n"
11665                    "};",
11666                    Tab));
11667 
11668   EXPECT_EQ("void a(){\n"
11669             "    // line starts with '\t'\n"
11670             "};",
11671             format("void a(){\n"
11672                    "\t\t// line starts with '\t'\n"
11673                    "};",
11674                    Tab));
11675 
11676   Tab.UseTab = FormatStyle::UT_Always;
11677   EXPECT_EQ("void a(){\n"
11678             "// line starts with '\t'\n"
11679             "};",
11680             format("void a(){\n"
11681                    "\t// line starts with '\t'\n"
11682                    "};",
11683                    Tab));
11684 
11685   EXPECT_EQ("void a(){\n"
11686             "// line starts with '\t'\n"
11687             "};",
11688             format("void a(){\n"
11689                    "\t\t// line starts with '\t'\n"
11690                    "};",
11691                    Tab));
11692 }
11693 
11694 TEST_F(FormatTest, CalculatesOriginalColumn) {
11695   EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
11696             "q\"; /* some\n"
11697             "       comment */",
11698             format("  \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
11699                    "q\"; /* some\n"
11700                    "       comment */",
11701                    getLLVMStyle()));
11702   EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
11703             "/* some\n"
11704             "   comment */",
11705             format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
11706                    " /* some\n"
11707                    "    comment */",
11708                    getLLVMStyle()));
11709   EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
11710             "qqq\n"
11711             "/* some\n"
11712             "   comment */",
11713             format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
11714                    "qqq\n"
11715                    " /* some\n"
11716                    "    comment */",
11717                    getLLVMStyle()));
11718   EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
11719             "wwww; /* some\n"
11720             "         comment */",
11721             format("  inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
11722                    "wwww; /* some\n"
11723                    "         comment */",
11724                    getLLVMStyle()));
11725 }
11726 
11727 TEST_F(FormatTest, ConfigurableSpaceBeforeParens) {
11728   FormatStyle NoSpace = getLLVMStyle();
11729   NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never;
11730 
11731   verifyFormat("while(true)\n"
11732                "  continue;",
11733                NoSpace);
11734   verifyFormat("for(;;)\n"
11735                "  continue;",
11736                NoSpace);
11737   verifyFormat("if(true)\n"
11738                "  f();\n"
11739                "else if(true)\n"
11740                "  f();",
11741                NoSpace);
11742   verifyFormat("do {\n"
11743                "  do_something();\n"
11744                "} while(something());",
11745                NoSpace);
11746   verifyFormat("switch(x) {\n"
11747                "default:\n"
11748                "  break;\n"
11749                "}",
11750                NoSpace);
11751   verifyFormat("auto i = std::make_unique<int>(5);", NoSpace);
11752   verifyFormat("size_t x = sizeof(x);", NoSpace);
11753   verifyFormat("auto f(int x) -> decltype(x);", NoSpace);
11754   verifyFormat("auto f(int x) -> typeof(x);", NoSpace);
11755   verifyFormat("auto f(int x) -> _Atomic(x);", NoSpace);
11756   verifyFormat("auto f(int x) -> __underlying_type(x);", NoSpace);
11757   verifyFormat("int f(T x) noexcept(x.create());", NoSpace);
11758   verifyFormat("alignas(128) char a[128];", NoSpace);
11759   verifyFormat("size_t x = alignof(MyType);", NoSpace);
11760   verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace);
11761   verifyFormat("int f() throw(Deprecated);", NoSpace);
11762   verifyFormat("typedef void (*cb)(int);", NoSpace);
11763   verifyFormat("T A::operator()();", NoSpace);
11764   verifyFormat("X A::operator++(T);", NoSpace);
11765   verifyFormat("auto lambda = []() { return 0; };", NoSpace);
11766 
11767   FormatStyle Space = getLLVMStyle();
11768   Space.SpaceBeforeParens = FormatStyle::SBPO_Always;
11769 
11770   verifyFormat("int f ();", Space);
11771   verifyFormat("void f (int a, T b) {\n"
11772                "  while (true)\n"
11773                "    continue;\n"
11774                "}",
11775                Space);
11776   verifyFormat("if (true)\n"
11777                "  f ();\n"
11778                "else if (true)\n"
11779                "  f ();",
11780                Space);
11781   verifyFormat("do {\n"
11782                "  do_something ();\n"
11783                "} while (something ());",
11784                Space);
11785   verifyFormat("switch (x) {\n"
11786                "default:\n"
11787                "  break;\n"
11788                "}",
11789                Space);
11790   verifyFormat("A::A () : a (1) {}", Space);
11791   verifyFormat("void f () __attribute__ ((asdf));", Space);
11792   verifyFormat("*(&a + 1);\n"
11793                "&((&a)[1]);\n"
11794                "a[(b + c) * d];\n"
11795                "(((a + 1) * 2) + 3) * 4;",
11796                Space);
11797   verifyFormat("#define A(x) x", Space);
11798   verifyFormat("#define A (x) x", Space);
11799   verifyFormat("#if defined(x)\n"
11800                "#endif",
11801                Space);
11802   verifyFormat("auto i = std::make_unique<int> (5);", Space);
11803   verifyFormat("size_t x = sizeof (x);", Space);
11804   verifyFormat("auto f (int x) -> decltype (x);", Space);
11805   verifyFormat("auto f (int x) -> typeof (x);", Space);
11806   verifyFormat("auto f (int x) -> _Atomic (x);", Space);
11807   verifyFormat("auto f (int x) -> __underlying_type (x);", Space);
11808   verifyFormat("int f (T x) noexcept (x.create ());", Space);
11809   verifyFormat("alignas (128) char a[128];", Space);
11810   verifyFormat("size_t x = alignof (MyType);", Space);
11811   verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space);
11812   verifyFormat("int f () throw (Deprecated);", Space);
11813   verifyFormat("typedef void (*cb) (int);", Space);
11814   verifyFormat("T A::operator() ();", Space);
11815   verifyFormat("X A::operator++ (T);", Space);
11816   verifyFormat("auto lambda = [] () { return 0; };", Space);
11817   verifyFormat("int x = int (y);", Space);
11818 
11819   FormatStyle SomeSpace = getLLVMStyle();
11820   SomeSpace.SpaceBeforeParens = FormatStyle::SBPO_NonEmptyParentheses;
11821 
11822   verifyFormat("[]() -> float {}", SomeSpace);
11823   verifyFormat("[] (auto foo) {}", SomeSpace);
11824   verifyFormat("[foo]() -> int {}", SomeSpace);
11825   verifyFormat("int f();", SomeSpace);
11826   verifyFormat("void f (int a, T b) {\n"
11827                "  while (true)\n"
11828                "    continue;\n"
11829                "}",
11830                SomeSpace);
11831   verifyFormat("if (true)\n"
11832                "  f();\n"
11833                "else if (true)\n"
11834                "  f();",
11835                SomeSpace);
11836   verifyFormat("do {\n"
11837                "  do_something();\n"
11838                "} while (something());",
11839                SomeSpace);
11840   verifyFormat("switch (x) {\n"
11841                "default:\n"
11842                "  break;\n"
11843                "}",
11844                SomeSpace);
11845   verifyFormat("A::A() : a (1) {}", SomeSpace);
11846   verifyFormat("void f() __attribute__ ((asdf));", SomeSpace);
11847   verifyFormat("*(&a + 1);\n"
11848                "&((&a)[1]);\n"
11849                "a[(b + c) * d];\n"
11850                "(((a + 1) * 2) + 3) * 4;",
11851                SomeSpace);
11852   verifyFormat("#define A(x) x", SomeSpace);
11853   verifyFormat("#define A (x) x", SomeSpace);
11854   verifyFormat("#if defined(x)\n"
11855                "#endif",
11856                SomeSpace);
11857   verifyFormat("auto i = std::make_unique<int> (5);", SomeSpace);
11858   verifyFormat("size_t x = sizeof (x);", SomeSpace);
11859   verifyFormat("auto f (int x) -> decltype (x);", SomeSpace);
11860   verifyFormat("auto f (int x) -> typeof (x);", SomeSpace);
11861   verifyFormat("auto f (int x) -> _Atomic (x);", SomeSpace);
11862   verifyFormat("auto f (int x) -> __underlying_type (x);", SomeSpace);
11863   verifyFormat("int f (T x) noexcept (x.create());", SomeSpace);
11864   verifyFormat("alignas (128) char a[128];", SomeSpace);
11865   verifyFormat("size_t x = alignof (MyType);", SomeSpace);
11866   verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");",
11867                SomeSpace);
11868   verifyFormat("int f() throw (Deprecated);", SomeSpace);
11869   verifyFormat("typedef void (*cb) (int);", SomeSpace);
11870   verifyFormat("T A::operator()();", SomeSpace);
11871   verifyFormat("X A::operator++ (T);", SomeSpace);
11872   verifyFormat("int x = int (y);", SomeSpace);
11873   verifyFormat("auto lambda = []() { return 0; };", SomeSpace);
11874 }
11875 
11876 TEST_F(FormatTest, SpaceAfterLogicalNot) {
11877   FormatStyle Spaces = getLLVMStyle();
11878   Spaces.SpaceAfterLogicalNot = true;
11879 
11880   verifyFormat("bool x = ! y", Spaces);
11881   verifyFormat("if (! isFailure())", Spaces);
11882   verifyFormat("if (! (a && b))", Spaces);
11883   verifyFormat("\"Error!\"", Spaces);
11884   verifyFormat("! ! x", Spaces);
11885 }
11886 
11887 TEST_F(FormatTest, ConfigurableSpacesInParentheses) {
11888   FormatStyle Spaces = getLLVMStyle();
11889 
11890   Spaces.SpacesInParentheses = true;
11891   verifyFormat("do_something( ::globalVar );", Spaces);
11892   verifyFormat("call( x, y, z );", Spaces);
11893   verifyFormat("call();", Spaces);
11894   verifyFormat("std::function<void( int, int )> callback;", Spaces);
11895   verifyFormat("void inFunction() { std::function<void( int, int )> fct; }",
11896                Spaces);
11897   verifyFormat("while ( (bool)1 )\n"
11898                "  continue;",
11899                Spaces);
11900   verifyFormat("for ( ;; )\n"
11901                "  continue;",
11902                Spaces);
11903   verifyFormat("if ( true )\n"
11904                "  f();\n"
11905                "else if ( true )\n"
11906                "  f();",
11907                Spaces);
11908   verifyFormat("do {\n"
11909                "  do_something( (int)i );\n"
11910                "} while ( something() );",
11911                Spaces);
11912   verifyFormat("switch ( x ) {\n"
11913                "default:\n"
11914                "  break;\n"
11915                "}",
11916                Spaces);
11917 
11918   Spaces.SpacesInParentheses = false;
11919   Spaces.SpacesInCStyleCastParentheses = true;
11920   verifyFormat("Type *A = ( Type * )P;", Spaces);
11921   verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces);
11922   verifyFormat("x = ( int32 )y;", Spaces);
11923   verifyFormat("int a = ( int )(2.0f);", Spaces);
11924   verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces);
11925   verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces);
11926   verifyFormat("#define x (( int )-1)", Spaces);
11927 
11928   // Run the first set of tests again with:
11929   Spaces.SpacesInParentheses = false;
11930   Spaces.SpaceInEmptyParentheses = true;
11931   Spaces.SpacesInCStyleCastParentheses = true;
11932   verifyFormat("call(x, y, z);", Spaces);
11933   verifyFormat("call( );", Spaces);
11934   verifyFormat("std::function<void(int, int)> callback;", Spaces);
11935   verifyFormat("while (( bool )1)\n"
11936                "  continue;",
11937                Spaces);
11938   verifyFormat("for (;;)\n"
11939                "  continue;",
11940                Spaces);
11941   verifyFormat("if (true)\n"
11942                "  f( );\n"
11943                "else if (true)\n"
11944                "  f( );",
11945                Spaces);
11946   verifyFormat("do {\n"
11947                "  do_something(( int )i);\n"
11948                "} while (something( ));",
11949                Spaces);
11950   verifyFormat("switch (x) {\n"
11951                "default:\n"
11952                "  break;\n"
11953                "}",
11954                Spaces);
11955 
11956   // Run the first set of tests again with:
11957   Spaces.SpaceAfterCStyleCast = true;
11958   verifyFormat("call(x, y, z);", Spaces);
11959   verifyFormat("call( );", Spaces);
11960   verifyFormat("std::function<void(int, int)> callback;", Spaces);
11961   verifyFormat("while (( bool ) 1)\n"
11962                "  continue;",
11963                Spaces);
11964   verifyFormat("for (;;)\n"
11965                "  continue;",
11966                Spaces);
11967   verifyFormat("if (true)\n"
11968                "  f( );\n"
11969                "else if (true)\n"
11970                "  f( );",
11971                Spaces);
11972   verifyFormat("do {\n"
11973                "  do_something(( int ) i);\n"
11974                "} while (something( ));",
11975                Spaces);
11976   verifyFormat("switch (x) {\n"
11977                "default:\n"
11978                "  break;\n"
11979                "}",
11980                Spaces);
11981 
11982   // Run subset of tests again with:
11983   Spaces.SpacesInCStyleCastParentheses = false;
11984   Spaces.SpaceAfterCStyleCast = true;
11985   verifyFormat("while ((bool) 1)\n"
11986                "  continue;",
11987                Spaces);
11988   verifyFormat("do {\n"
11989                "  do_something((int) i);\n"
11990                "} while (something( ));",
11991                Spaces);
11992 
11993   verifyFormat("size_t idx = (size_t) (ptr - ((char *) file));", Spaces);
11994   verifyFormat("size_t idx = (size_t) a;", Spaces);
11995   verifyFormat("size_t idx = (size_t) (a - 1);", Spaces);
11996   verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
11997   verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
11998   verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
11999   Spaces.SpaceAfterCStyleCast = false;
12000   verifyFormat("size_t idx = (size_t)(ptr - ((char *)file));", Spaces);
12001   verifyFormat("size_t idx = (size_t)a;", Spaces);
12002   verifyFormat("size_t idx = (size_t)(a - 1);", Spaces);
12003   verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
12004   verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
12005   verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
12006 }
12007 
12008 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) {
12009   verifyFormat("int a[5];");
12010   verifyFormat("a[3] += 42;");
12011 
12012   FormatStyle Spaces = getLLVMStyle();
12013   Spaces.SpacesInSquareBrackets = true;
12014   // Not lambdas.
12015   verifyFormat("int a[ 5 ];", Spaces);
12016   verifyFormat("a[ 3 ] += 42;", Spaces);
12017   verifyFormat("constexpr char hello[]{\"hello\"};", Spaces);
12018   verifyFormat("double &operator[](int i) { return 0; }\n"
12019                "int i;",
12020                Spaces);
12021   verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces);
12022   verifyFormat("int i = a[ a ][ a ]->f();", Spaces);
12023   verifyFormat("int i = (*b)[ a ]->f();", Spaces);
12024   // Lambdas.
12025   verifyFormat("int c = []() -> int { return 2; }();\n", Spaces);
12026   verifyFormat("return [ i, args... ] {};", Spaces);
12027   verifyFormat("int foo = [ &bar ]() {};", Spaces);
12028   verifyFormat("int foo = [ = ]() {};", Spaces);
12029   verifyFormat("int foo = [ & ]() {};", Spaces);
12030   verifyFormat("int foo = [ =, &bar ]() {};", Spaces);
12031   verifyFormat("int foo = [ &bar, = ]() {};", Spaces);
12032 }
12033 
12034 TEST_F(FormatTest, ConfigurableSpaceBeforeBrackets) {
12035   FormatStyle NoSpaceStyle = getLLVMStyle();
12036   verifyFormat("int a[5];", NoSpaceStyle);
12037   verifyFormat("a[3] += 42;", NoSpaceStyle);
12038 
12039   verifyFormat("int a[1];", NoSpaceStyle);
12040   verifyFormat("int 1 [a];", NoSpaceStyle);
12041   verifyFormat("int a[1][2];", NoSpaceStyle);
12042   verifyFormat("a[7] = 5;", NoSpaceStyle);
12043   verifyFormat("int a = (f())[23];", NoSpaceStyle);
12044   verifyFormat("f([] {})", NoSpaceStyle);
12045 
12046   FormatStyle Space = getLLVMStyle();
12047   Space.SpaceBeforeSquareBrackets = true;
12048   verifyFormat("int c = []() -> int { return 2; }();\n", Space);
12049   verifyFormat("return [i, args...] {};", Space);
12050 
12051   verifyFormat("int a [5];", Space);
12052   verifyFormat("a [3] += 42;", Space);
12053   verifyFormat("constexpr char hello []{\"hello\"};", Space);
12054   verifyFormat("double &operator[](int i) { return 0; }\n"
12055                "int i;",
12056                Space);
12057   verifyFormat("std::unique_ptr<int []> foo() {}", Space);
12058   verifyFormat("int i = a [a][a]->f();", Space);
12059   verifyFormat("int i = (*b) [a]->f();", Space);
12060 
12061   verifyFormat("int a [1];", Space);
12062   verifyFormat("int 1 [a];", Space);
12063   verifyFormat("int a [1][2];", Space);
12064   verifyFormat("a [7] = 5;", Space);
12065   verifyFormat("int a = (f()) [23];", Space);
12066   verifyFormat("f([] {})", Space);
12067 }
12068 
12069 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) {
12070   verifyFormat("int a = 5;");
12071   verifyFormat("a += 42;");
12072   verifyFormat("a or_eq 8;");
12073 
12074   FormatStyle Spaces = getLLVMStyle();
12075   Spaces.SpaceBeforeAssignmentOperators = false;
12076   verifyFormat("int a= 5;", Spaces);
12077   verifyFormat("a+= 42;", Spaces);
12078   verifyFormat("a or_eq 8;", Spaces);
12079 }
12080 
12081 TEST_F(FormatTest, ConfigurableSpaceBeforeColon) {
12082   verifyFormat("class Foo : public Bar {};");
12083   verifyFormat("Foo::Foo() : foo(1) {}");
12084   verifyFormat("for (auto a : b) {\n}");
12085   verifyFormat("int x = a ? b : c;");
12086   verifyFormat("{\n"
12087                "label0:\n"
12088                "  int x = 0;\n"
12089                "}");
12090   verifyFormat("switch (x) {\n"
12091                "case 1:\n"
12092                "default:\n"
12093                "}");
12094   verifyFormat("switch (allBraces) {\n"
12095                "case 1: {\n"
12096                "  break;\n"
12097                "}\n"
12098                "case 2: {\n"
12099                "  [[fallthrough]];\n"
12100                "}\n"
12101                "default: {\n"
12102                "  break;\n"
12103                "}\n"
12104                "}");
12105 
12106   FormatStyle CtorInitializerStyle = getLLVMStyleWithColumns(30);
12107   CtorInitializerStyle.SpaceBeforeCtorInitializerColon = false;
12108   verifyFormat("class Foo : public Bar {};", CtorInitializerStyle);
12109   verifyFormat("Foo::Foo(): foo(1) {}", CtorInitializerStyle);
12110   verifyFormat("for (auto a : b) {\n}", CtorInitializerStyle);
12111   verifyFormat("int x = a ? b : c;", CtorInitializerStyle);
12112   verifyFormat("{\n"
12113                "label1:\n"
12114                "  int x = 0;\n"
12115                "}",
12116                CtorInitializerStyle);
12117   verifyFormat("switch (x) {\n"
12118                "case 1:\n"
12119                "default:\n"
12120                "}",
12121                CtorInitializerStyle);
12122   verifyFormat("switch (allBraces) {\n"
12123                "case 1: {\n"
12124                "  break;\n"
12125                "}\n"
12126                "case 2: {\n"
12127                "  [[fallthrough]];\n"
12128                "}\n"
12129                "default: {\n"
12130                "  break;\n"
12131                "}\n"
12132                "}",
12133                CtorInitializerStyle);
12134   CtorInitializerStyle.BreakConstructorInitializers =
12135       FormatStyle::BCIS_AfterColon;
12136   verifyFormat("Fooooooooooo::Fooooooooooo():\n"
12137                "    aaaaaaaaaaaaaaaa(1),\n"
12138                "    bbbbbbbbbbbbbbbb(2) {}",
12139                CtorInitializerStyle);
12140   CtorInitializerStyle.BreakConstructorInitializers =
12141       FormatStyle::BCIS_BeforeComma;
12142   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
12143                "    : aaaaaaaaaaaaaaaa(1)\n"
12144                "    , bbbbbbbbbbbbbbbb(2) {}",
12145                CtorInitializerStyle);
12146   CtorInitializerStyle.BreakConstructorInitializers =
12147       FormatStyle::BCIS_BeforeColon;
12148   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
12149                "    : aaaaaaaaaaaaaaaa(1),\n"
12150                "      bbbbbbbbbbbbbbbb(2) {}",
12151                CtorInitializerStyle);
12152   CtorInitializerStyle.ConstructorInitializerIndentWidth = 0;
12153   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
12154                ": aaaaaaaaaaaaaaaa(1),\n"
12155                "  bbbbbbbbbbbbbbbb(2) {}",
12156                CtorInitializerStyle);
12157 
12158   FormatStyle InheritanceStyle = getLLVMStyleWithColumns(30);
12159   InheritanceStyle.SpaceBeforeInheritanceColon = false;
12160   verifyFormat("class Foo: public Bar {};", InheritanceStyle);
12161   verifyFormat("Foo::Foo() : foo(1) {}", InheritanceStyle);
12162   verifyFormat("for (auto a : b) {\n}", InheritanceStyle);
12163   verifyFormat("int x = a ? b : c;", InheritanceStyle);
12164   verifyFormat("{\n"
12165                "label2:\n"
12166                "  int x = 0;\n"
12167                "}",
12168                InheritanceStyle);
12169   verifyFormat("switch (x) {\n"
12170                "case 1:\n"
12171                "default:\n"
12172                "}",
12173                InheritanceStyle);
12174   verifyFormat("switch (allBraces) {\n"
12175                "case 1: {\n"
12176                "  break;\n"
12177                "}\n"
12178                "case 2: {\n"
12179                "  [[fallthrough]];\n"
12180                "}\n"
12181                "default: {\n"
12182                "  break;\n"
12183                "}\n"
12184                "}",
12185                InheritanceStyle);
12186   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_AfterColon;
12187   verifyFormat("class Foooooooooooooooooooooo:\n"
12188                "    public aaaaaaaaaaaaaaaaaa,\n"
12189                "    public bbbbbbbbbbbbbbbbbb {\n"
12190                "}",
12191                InheritanceStyle);
12192   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_BeforeComma;
12193   verifyFormat("class Foooooooooooooooooooooo\n"
12194                "    : public aaaaaaaaaaaaaaaaaa\n"
12195                "    , public bbbbbbbbbbbbbbbbbb {\n"
12196                "}",
12197                InheritanceStyle);
12198   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
12199   verifyFormat("class Foooooooooooooooooooooo\n"
12200                "    : public aaaaaaaaaaaaaaaaaa,\n"
12201                "      public bbbbbbbbbbbbbbbbbb {\n"
12202                "}",
12203                InheritanceStyle);
12204   InheritanceStyle.ConstructorInitializerIndentWidth = 0;
12205   verifyFormat("class Foooooooooooooooooooooo\n"
12206                ": public aaaaaaaaaaaaaaaaaa,\n"
12207                "  public bbbbbbbbbbbbbbbbbb {}",
12208                InheritanceStyle);
12209 
12210   FormatStyle ForLoopStyle = getLLVMStyle();
12211   ForLoopStyle.SpaceBeforeRangeBasedForLoopColon = false;
12212   verifyFormat("class Foo : public Bar {};", ForLoopStyle);
12213   verifyFormat("Foo::Foo() : foo(1) {}", ForLoopStyle);
12214   verifyFormat("for (auto a: b) {\n}", ForLoopStyle);
12215   verifyFormat("int x = a ? b : c;", ForLoopStyle);
12216   verifyFormat("{\n"
12217                "label2:\n"
12218                "  int x = 0;\n"
12219                "}",
12220                ForLoopStyle);
12221   verifyFormat("switch (x) {\n"
12222                "case 1:\n"
12223                "default:\n"
12224                "}",
12225                ForLoopStyle);
12226   verifyFormat("switch (allBraces) {\n"
12227                "case 1: {\n"
12228                "  break;\n"
12229                "}\n"
12230                "case 2: {\n"
12231                "  [[fallthrough]];\n"
12232                "}\n"
12233                "default: {\n"
12234                "  break;\n"
12235                "}\n"
12236                "}",
12237                ForLoopStyle);
12238 
12239   FormatStyle CaseStyle = getLLVMStyle();
12240   CaseStyle.SpaceBeforeCaseColon = true;
12241   verifyFormat("class Foo : public Bar {};", CaseStyle);
12242   verifyFormat("Foo::Foo() : foo(1) {}", CaseStyle);
12243   verifyFormat("for (auto a : b) {\n}", CaseStyle);
12244   verifyFormat("int x = a ? b : c;", CaseStyle);
12245   verifyFormat("switch (x) {\n"
12246                "case 1 :\n"
12247                "default :\n"
12248                "}",
12249                CaseStyle);
12250   verifyFormat("switch (allBraces) {\n"
12251                "case 1 : {\n"
12252                "  break;\n"
12253                "}\n"
12254                "case 2 : {\n"
12255                "  [[fallthrough]];\n"
12256                "}\n"
12257                "default : {\n"
12258                "  break;\n"
12259                "}\n"
12260                "}",
12261                CaseStyle);
12262 
12263   FormatStyle NoSpaceStyle = getLLVMStyle();
12264   EXPECT_EQ(NoSpaceStyle.SpaceBeforeCaseColon, false);
12265   NoSpaceStyle.SpaceBeforeCtorInitializerColon = false;
12266   NoSpaceStyle.SpaceBeforeInheritanceColon = false;
12267   NoSpaceStyle.SpaceBeforeRangeBasedForLoopColon = false;
12268   verifyFormat("class Foo: public Bar {};", NoSpaceStyle);
12269   verifyFormat("Foo::Foo(): foo(1) {}", NoSpaceStyle);
12270   verifyFormat("for (auto a: b) {\n}", NoSpaceStyle);
12271   verifyFormat("int x = a ? b : c;", NoSpaceStyle);
12272   verifyFormat("{\n"
12273                "label3:\n"
12274                "  int x = 0;\n"
12275                "}",
12276                NoSpaceStyle);
12277   verifyFormat("switch (x) {\n"
12278                "case 1:\n"
12279                "default:\n"
12280                "}",
12281                NoSpaceStyle);
12282   verifyFormat("switch (allBraces) {\n"
12283                "case 1: {\n"
12284                "  break;\n"
12285                "}\n"
12286                "case 2: {\n"
12287                "  [[fallthrough]];\n"
12288                "}\n"
12289                "default: {\n"
12290                "  break;\n"
12291                "}\n"
12292                "}",
12293                NoSpaceStyle);
12294 
12295   FormatStyle InvertedSpaceStyle = getLLVMStyle();
12296   InvertedSpaceStyle.SpaceBeforeCaseColon = true;
12297   InvertedSpaceStyle.SpaceBeforeCtorInitializerColon = false;
12298   InvertedSpaceStyle.SpaceBeforeInheritanceColon = false;
12299   InvertedSpaceStyle.SpaceBeforeRangeBasedForLoopColon = false;
12300   verifyFormat("class Foo: public Bar {};", InvertedSpaceStyle);
12301   verifyFormat("Foo::Foo(): foo(1) {}", InvertedSpaceStyle);
12302   verifyFormat("for (auto a: b) {\n}", InvertedSpaceStyle);
12303   verifyFormat("int x = a ? b : c;", InvertedSpaceStyle);
12304   verifyFormat("{\n"
12305                "label3:\n"
12306                "  int x = 0;\n"
12307                "}",
12308                InvertedSpaceStyle);
12309   verifyFormat("switch (x) {\n"
12310                "case 1 :\n"
12311                "case 2 : {\n"
12312                "  break;\n"
12313                "}\n"
12314                "default :\n"
12315                "  break;\n"
12316                "}",
12317                InvertedSpaceStyle);
12318   verifyFormat("switch (allBraces) {\n"
12319                "case 1 : {\n"
12320                "  break;\n"
12321                "}\n"
12322                "case 2 : {\n"
12323                "  [[fallthrough]];\n"
12324                "}\n"
12325                "default : {\n"
12326                "  break;\n"
12327                "}\n"
12328                "}",
12329                InvertedSpaceStyle);
12330 }
12331 
12332 TEST_F(FormatTest, ConfigurableSpaceAroundPointerQualifiers) {
12333   FormatStyle Style = getLLVMStyle();
12334 
12335   Style.PointerAlignment = FormatStyle::PAS_Left;
12336   Style.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Default;
12337   verifyFormat("void* const* x = NULL;", Style);
12338 
12339 #define verifyQualifierSpaces(Code, Pointers, Qualifiers)                      \
12340   do {                                                                         \
12341     Style.PointerAlignment = FormatStyle::Pointers;                            \
12342     Style.SpaceAroundPointerQualifiers = FormatStyle::Qualifiers;              \
12343     verifyFormat(Code, Style);                                                 \
12344   } while (false)
12345 
12346   verifyQualifierSpaces("void* const* x = NULL;", PAS_Left, SAPQ_Default);
12347   verifyQualifierSpaces("void *const *x = NULL;", PAS_Right, SAPQ_Default);
12348   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Default);
12349 
12350   verifyQualifierSpaces("void* const* x = NULL;", PAS_Left, SAPQ_Before);
12351   verifyQualifierSpaces("void * const *x = NULL;", PAS_Right, SAPQ_Before);
12352   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Before);
12353 
12354   verifyQualifierSpaces("void* const * x = NULL;", PAS_Left, SAPQ_After);
12355   verifyQualifierSpaces("void *const *x = NULL;", PAS_Right, SAPQ_After);
12356   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_After);
12357 
12358   verifyQualifierSpaces("void* const * x = NULL;", PAS_Left, SAPQ_Both);
12359   verifyQualifierSpaces("void * const *x = NULL;", PAS_Right, SAPQ_Both);
12360   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Both);
12361 
12362 #undef verifyQualifierSpaces
12363 
12364   FormatStyle Spaces = getLLVMStyle();
12365   Spaces.AttributeMacros.push_back("qualified");
12366   Spaces.PointerAlignment = FormatStyle::PAS_Right;
12367   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Default;
12368   verifyFormat("SomeType *volatile *a = NULL;", Spaces);
12369   verifyFormat("SomeType *__attribute__((attr)) *a = NULL;", Spaces);
12370   verifyFormat("std::vector<SomeType *const *> x;", Spaces);
12371   verifyFormat("std::vector<SomeType *qualified *> x;", Spaces);
12372   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12373   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Before;
12374   verifyFormat("SomeType * volatile *a = NULL;", Spaces);
12375   verifyFormat("SomeType * __attribute__((attr)) *a = NULL;", Spaces);
12376   verifyFormat("std::vector<SomeType * const *> x;", Spaces);
12377   verifyFormat("std::vector<SomeType * qualified *> x;", Spaces);
12378   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12379 
12380   // Check that SAPQ_Before doesn't result in extra spaces for PAS_Left.
12381   Spaces.PointerAlignment = FormatStyle::PAS_Left;
12382   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Before;
12383   verifyFormat("SomeType* volatile* a = NULL;", Spaces);
12384   verifyFormat("SomeType* __attribute__((attr))* a = NULL;", Spaces);
12385   verifyFormat("std::vector<SomeType* const*> x;", Spaces);
12386   verifyFormat("std::vector<SomeType* qualified*> x;", Spaces);
12387   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12388   // However, setting it to SAPQ_After should add spaces after __attribute, etc.
12389   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_After;
12390   verifyFormat("SomeType* volatile * a = NULL;", Spaces);
12391   verifyFormat("SomeType* __attribute__((attr)) * a = NULL;", Spaces);
12392   verifyFormat("std::vector<SomeType* const *> x;", Spaces);
12393   verifyFormat("std::vector<SomeType* qualified *> x;", Spaces);
12394   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12395 
12396   // PAS_Middle should not have any noticeable changes even for SAPQ_Both
12397   Spaces.PointerAlignment = FormatStyle::PAS_Middle;
12398   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_After;
12399   verifyFormat("SomeType * volatile * a = NULL;", Spaces);
12400   verifyFormat("SomeType * __attribute__((attr)) * a = NULL;", Spaces);
12401   verifyFormat("std::vector<SomeType * const *> x;", Spaces);
12402   verifyFormat("std::vector<SomeType * qualified *> x;", Spaces);
12403   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12404 }
12405 
12406 TEST_F(FormatTest, AlignConsecutiveMacros) {
12407   FormatStyle Style = getLLVMStyle();
12408   Style.AlignConsecutiveAssignments = true;
12409   Style.AlignConsecutiveDeclarations = true;
12410   Style.AlignConsecutiveMacros = false;
12411 
12412   verifyFormat("#define a 3\n"
12413                "#define bbbb 4\n"
12414                "#define ccc (5)",
12415                Style);
12416 
12417   verifyFormat("#define f(x) (x * x)\n"
12418                "#define fff(x, y, z) (x * y + z)\n"
12419                "#define ffff(x, y) (x - y)",
12420                Style);
12421 
12422   verifyFormat("#define foo(x, y) (x + y)\n"
12423                "#define bar (5, 6)(2 + 2)",
12424                Style);
12425 
12426   verifyFormat("#define a 3\n"
12427                "#define bbbb 4\n"
12428                "#define ccc (5)\n"
12429                "#define f(x) (x * x)\n"
12430                "#define fff(x, y, z) (x * y + z)\n"
12431                "#define ffff(x, y) (x - y)",
12432                Style);
12433 
12434   Style.AlignConsecutiveMacros = true;
12435   verifyFormat("#define a    3\n"
12436                "#define bbbb 4\n"
12437                "#define ccc  (5)",
12438                Style);
12439 
12440   verifyFormat("#define f(x)         (x * x)\n"
12441                "#define fff(x, y, z) (x * y + z)\n"
12442                "#define ffff(x, y)   (x - y)",
12443                Style);
12444 
12445   verifyFormat("#define foo(x, y) (x + y)\n"
12446                "#define bar       (5, 6)(2 + 2)",
12447                Style);
12448 
12449   verifyFormat("#define a            3\n"
12450                "#define bbbb         4\n"
12451                "#define ccc          (5)\n"
12452                "#define f(x)         (x * x)\n"
12453                "#define fff(x, y, z) (x * y + z)\n"
12454                "#define ffff(x, y)   (x - y)",
12455                Style);
12456 
12457   verifyFormat("#define a         5\n"
12458                "#define foo(x, y) (x + y)\n"
12459                "#define CCC       (6)\n"
12460                "auto lambda = []() {\n"
12461                "  auto  ii = 0;\n"
12462                "  float j  = 0;\n"
12463                "  return 0;\n"
12464                "};\n"
12465                "int   i  = 0;\n"
12466                "float i2 = 0;\n"
12467                "auto  v  = type{\n"
12468                "    i = 1,   //\n"
12469                "    (i = 2), //\n"
12470                "    i = 3    //\n"
12471                "};",
12472                Style);
12473 
12474   Style.AlignConsecutiveMacros = false;
12475   Style.ColumnLimit = 20;
12476 
12477   verifyFormat("#define a          \\\n"
12478                "  \"aabbbbbbbbbbbb\"\n"
12479                "#define D          \\\n"
12480                "  \"aabbbbbbbbbbbb\" \\\n"
12481                "  \"ccddeeeeeeeee\"\n"
12482                "#define B          \\\n"
12483                "  \"QQQQQQQQQQQQQ\"  \\\n"
12484                "  \"FFFFFFFFFFFFF\"  \\\n"
12485                "  \"LLLLLLLL\"\n",
12486                Style);
12487 
12488   Style.AlignConsecutiveMacros = true;
12489   verifyFormat("#define a          \\\n"
12490                "  \"aabbbbbbbbbbbb\"\n"
12491                "#define D          \\\n"
12492                "  \"aabbbbbbbbbbbb\" \\\n"
12493                "  \"ccddeeeeeeeee\"\n"
12494                "#define B          \\\n"
12495                "  \"QQQQQQQQQQQQQ\"  \\\n"
12496                "  \"FFFFFFFFFFFFF\"  \\\n"
12497                "  \"LLLLLLLL\"\n",
12498                Style);
12499 }
12500 
12501 TEST_F(FormatTest, AlignConsecutiveAssignments) {
12502   FormatStyle Alignment = getLLVMStyle();
12503   Alignment.AlignConsecutiveMacros = true;
12504   Alignment.AlignConsecutiveAssignments = false;
12505   verifyFormat("int a = 5;\n"
12506                "int oneTwoThree = 123;",
12507                Alignment);
12508   verifyFormat("int a = 5;\n"
12509                "int oneTwoThree = 123;",
12510                Alignment);
12511 
12512   Alignment.AlignConsecutiveAssignments = true;
12513   verifyFormat("int a           = 5;\n"
12514                "int oneTwoThree = 123;",
12515                Alignment);
12516   verifyFormat("int a           = method();\n"
12517                "int oneTwoThree = 133;",
12518                Alignment);
12519   verifyFormat("a &= 5;\n"
12520                "bcd *= 5;\n"
12521                "ghtyf += 5;\n"
12522                "dvfvdb -= 5;\n"
12523                "a /= 5;\n"
12524                "vdsvsv %= 5;\n"
12525                "sfdbddfbdfbb ^= 5;\n"
12526                "dvsdsv |= 5;\n"
12527                "int dsvvdvsdvvv = 123;",
12528                Alignment);
12529   verifyFormat("int i = 1, j = 10;\n"
12530                "something = 2000;",
12531                Alignment);
12532   verifyFormat("something = 2000;\n"
12533                "int i = 1, j = 10;\n",
12534                Alignment);
12535   verifyFormat("something = 2000;\n"
12536                "another   = 911;\n"
12537                "int i = 1, j = 10;\n"
12538                "oneMore = 1;\n"
12539                "i       = 2;",
12540                Alignment);
12541   verifyFormat("int a   = 5;\n"
12542                "int one = 1;\n"
12543                "method();\n"
12544                "int oneTwoThree = 123;\n"
12545                "int oneTwo      = 12;",
12546                Alignment);
12547   verifyFormat("int oneTwoThree = 123;\n"
12548                "int oneTwo      = 12;\n"
12549                "method();\n",
12550                Alignment);
12551   verifyFormat("int oneTwoThree = 123; // comment\n"
12552                "int oneTwo      = 12;  // comment",
12553                Alignment);
12554 
12555   // Bug 25167
12556   /* Uncomment when fixed
12557     verifyFormat("#if A\n"
12558                  "#else\n"
12559                  "int aaaaaaaa = 12;\n"
12560                  "#endif\n"
12561                  "#if B\n"
12562                  "#else\n"
12563                  "int a = 12;\n"
12564                  "#endif\n",
12565                  Alignment);
12566     verifyFormat("enum foo {\n"
12567                  "#if A\n"
12568                  "#else\n"
12569                  "  aaaaaaaa = 12;\n"
12570                  "#endif\n"
12571                  "#if B\n"
12572                  "#else\n"
12573                  "  a = 12;\n"
12574                  "#endif\n"
12575                  "};\n",
12576                  Alignment);
12577   */
12578 
12579   EXPECT_EQ("int a = 5;\n"
12580             "\n"
12581             "int oneTwoThree = 123;",
12582             format("int a       = 5;\n"
12583                    "\n"
12584                    "int oneTwoThree= 123;",
12585                    Alignment));
12586   EXPECT_EQ("int a   = 5;\n"
12587             "int one = 1;\n"
12588             "\n"
12589             "int oneTwoThree = 123;",
12590             format("int a = 5;\n"
12591                    "int one = 1;\n"
12592                    "\n"
12593                    "int oneTwoThree = 123;",
12594                    Alignment));
12595   EXPECT_EQ("int a   = 5;\n"
12596             "int one = 1;\n"
12597             "\n"
12598             "int oneTwoThree = 123;\n"
12599             "int oneTwo      = 12;",
12600             format("int a = 5;\n"
12601                    "int one = 1;\n"
12602                    "\n"
12603                    "int oneTwoThree = 123;\n"
12604                    "int oneTwo = 12;",
12605                    Alignment));
12606   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
12607   verifyFormat("#define A \\\n"
12608                "  int aaaa       = 12; \\\n"
12609                "  int b          = 23; \\\n"
12610                "  int ccc        = 234; \\\n"
12611                "  int dddddddddd = 2345;",
12612                Alignment);
12613   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
12614   verifyFormat("#define A               \\\n"
12615                "  int aaaa       = 12;  \\\n"
12616                "  int b          = 23;  \\\n"
12617                "  int ccc        = 234; \\\n"
12618                "  int dddddddddd = 2345;",
12619                Alignment);
12620   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
12621   verifyFormat("#define A                                                      "
12622                "                \\\n"
12623                "  int aaaa       = 12;                                         "
12624                "                \\\n"
12625                "  int b          = 23;                                         "
12626                "                \\\n"
12627                "  int ccc        = 234;                                        "
12628                "                \\\n"
12629                "  int dddddddddd = 2345;",
12630                Alignment);
12631   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
12632                "k = 4, int l = 5,\n"
12633                "                  int m = 6) {\n"
12634                "  int j      = 10;\n"
12635                "  otherThing = 1;\n"
12636                "}",
12637                Alignment);
12638   verifyFormat("void SomeFunction(int parameter = 0) {\n"
12639                "  int i   = 1;\n"
12640                "  int j   = 2;\n"
12641                "  int big = 10000;\n"
12642                "}",
12643                Alignment);
12644   verifyFormat("class C {\n"
12645                "public:\n"
12646                "  int i            = 1;\n"
12647                "  virtual void f() = 0;\n"
12648                "};",
12649                Alignment);
12650   verifyFormat("int i = 1;\n"
12651                "if (SomeType t = getSomething()) {\n"
12652                "}\n"
12653                "int j   = 2;\n"
12654                "int big = 10000;",
12655                Alignment);
12656   verifyFormat("int j = 7;\n"
12657                "for (int k = 0; k < N; ++k) {\n"
12658                "}\n"
12659                "int j   = 2;\n"
12660                "int big = 10000;\n"
12661                "}",
12662                Alignment);
12663   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
12664   verifyFormat("int i = 1;\n"
12665                "LooooooooooongType loooooooooooooooooooooongVariable\n"
12666                "    = someLooooooooooooooooongFunction();\n"
12667                "int j = 2;",
12668                Alignment);
12669   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
12670   verifyFormat("int i = 1;\n"
12671                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
12672                "    someLooooooooooooooooongFunction();\n"
12673                "int j = 2;",
12674                Alignment);
12675 
12676   verifyFormat("auto lambda = []() {\n"
12677                "  auto i = 0;\n"
12678                "  return 0;\n"
12679                "};\n"
12680                "int i  = 0;\n"
12681                "auto v = type{\n"
12682                "    i = 1,   //\n"
12683                "    (i = 2), //\n"
12684                "    i = 3    //\n"
12685                "};",
12686                Alignment);
12687 
12688   verifyFormat(
12689       "int i      = 1;\n"
12690       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
12691       "                          loooooooooooooooooooooongParameterB);\n"
12692       "int j      = 2;",
12693       Alignment);
12694 
12695   verifyFormat("template <typename T, typename T_0 = very_long_type_name_0,\n"
12696                "          typename B   = very_long_type_name_1,\n"
12697                "          typename T_2 = very_long_type_name_2>\n"
12698                "auto foo() {}\n",
12699                Alignment);
12700   verifyFormat("int a, b = 1;\n"
12701                "int c  = 2;\n"
12702                "int dd = 3;\n",
12703                Alignment);
12704   verifyFormat("int aa       = ((1 > 2) ? 3 : 4);\n"
12705                "float b[1][] = {{3.f}};\n",
12706                Alignment);
12707   verifyFormat("for (int i = 0; i < 1; i++)\n"
12708                "  int x = 1;\n",
12709                Alignment);
12710   verifyFormat("for (i = 0; i < 1; i++)\n"
12711                "  x = 1;\n"
12712                "y = 1;\n",
12713                Alignment);
12714 
12715   Alignment.ReflowComments = true;
12716   Alignment.ColumnLimit = 50;
12717   EXPECT_EQ("int x   = 0;\n"
12718             "int yy  = 1; /// specificlennospace\n"
12719             "int zzz = 2;\n",
12720             format("int x   = 0;\n"
12721                    "int yy  = 1; ///specificlennospace\n"
12722                    "int zzz = 2;\n",
12723                    Alignment));
12724 }
12725 
12726 TEST_F(FormatTest, AlignConsecutiveBitFields) {
12727   FormatStyle Alignment = getLLVMStyle();
12728   Alignment.AlignConsecutiveBitFields = true;
12729   verifyFormat("int const a     : 5;\n"
12730                "int oneTwoThree : 23;",
12731                Alignment);
12732 
12733   // Initializers are allowed starting with c++2a
12734   verifyFormat("int const a     : 5 = 1;\n"
12735                "int oneTwoThree : 23 = 0;",
12736                Alignment);
12737 
12738   Alignment.AlignConsecutiveDeclarations = true;
12739   verifyFormat("int const a           : 5;\n"
12740                "int       oneTwoThree : 23;",
12741                Alignment);
12742 
12743   verifyFormat("int const a           : 5;  // comment\n"
12744                "int       oneTwoThree : 23; // comment",
12745                Alignment);
12746 
12747   verifyFormat("int const a           : 5 = 1;\n"
12748                "int       oneTwoThree : 23 = 0;",
12749                Alignment);
12750 
12751   Alignment.AlignConsecutiveAssignments = true;
12752   verifyFormat("int const a           : 5  = 1;\n"
12753                "int       oneTwoThree : 23 = 0;",
12754                Alignment);
12755   verifyFormat("int const a           : 5  = {1};\n"
12756                "int       oneTwoThree : 23 = 0;",
12757                Alignment);
12758 
12759   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_None;
12760   verifyFormat("int const a          :5;\n"
12761                "int       oneTwoThree:23;",
12762                Alignment);
12763 
12764   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_Before;
12765   verifyFormat("int const a           :5;\n"
12766                "int       oneTwoThree :23;",
12767                Alignment);
12768 
12769   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_After;
12770   verifyFormat("int const a          : 5;\n"
12771                "int       oneTwoThree: 23;",
12772                Alignment);
12773 
12774   // Known limitations: ':' is only recognized as a bitfield colon when
12775   // followed by a number.
12776   /*
12777   verifyFormat("int oneTwoThree : SOME_CONSTANT;\n"
12778                "int a           : 5;",
12779                Alignment);
12780   */
12781 }
12782 
12783 TEST_F(FormatTest, AlignConsecutiveDeclarations) {
12784   FormatStyle Alignment = getLLVMStyle();
12785   Alignment.AlignConsecutiveMacros = true;
12786   Alignment.AlignConsecutiveDeclarations = false;
12787   verifyFormat("float const a = 5;\n"
12788                "int oneTwoThree = 123;",
12789                Alignment);
12790   verifyFormat("int a = 5;\n"
12791                "float const oneTwoThree = 123;",
12792                Alignment);
12793 
12794   Alignment.AlignConsecutiveDeclarations = true;
12795   verifyFormat("float const a = 5;\n"
12796                "int         oneTwoThree = 123;",
12797                Alignment);
12798   verifyFormat("int         a = method();\n"
12799                "float const oneTwoThree = 133;",
12800                Alignment);
12801   verifyFormat("int i = 1, j = 10;\n"
12802                "something = 2000;",
12803                Alignment);
12804   verifyFormat("something = 2000;\n"
12805                "int i = 1, j = 10;\n",
12806                Alignment);
12807   verifyFormat("float      something = 2000;\n"
12808                "double     another = 911;\n"
12809                "int        i = 1, j = 10;\n"
12810                "const int *oneMore = 1;\n"
12811                "unsigned   i = 2;",
12812                Alignment);
12813   verifyFormat("float a = 5;\n"
12814                "int   one = 1;\n"
12815                "method();\n"
12816                "const double       oneTwoThree = 123;\n"
12817                "const unsigned int oneTwo = 12;",
12818                Alignment);
12819   verifyFormat("int      oneTwoThree{0}; // comment\n"
12820                "unsigned oneTwo;         // comment",
12821                Alignment);
12822   EXPECT_EQ("float const a = 5;\n"
12823             "\n"
12824             "int oneTwoThree = 123;",
12825             format("float const   a = 5;\n"
12826                    "\n"
12827                    "int           oneTwoThree= 123;",
12828                    Alignment));
12829   EXPECT_EQ("float a = 5;\n"
12830             "int   one = 1;\n"
12831             "\n"
12832             "unsigned oneTwoThree = 123;",
12833             format("float    a = 5;\n"
12834                    "int      one = 1;\n"
12835                    "\n"
12836                    "unsigned oneTwoThree = 123;",
12837                    Alignment));
12838   EXPECT_EQ("float a = 5;\n"
12839             "int   one = 1;\n"
12840             "\n"
12841             "unsigned oneTwoThree = 123;\n"
12842             "int      oneTwo = 12;",
12843             format("float    a = 5;\n"
12844                    "int one = 1;\n"
12845                    "\n"
12846                    "unsigned oneTwoThree = 123;\n"
12847                    "int oneTwo = 12;",
12848                    Alignment));
12849   // Function prototype alignment
12850   verifyFormat("int    a();\n"
12851                "double b();",
12852                Alignment);
12853   verifyFormat("int    a(int x);\n"
12854                "double b();",
12855                Alignment);
12856   unsigned OldColumnLimit = Alignment.ColumnLimit;
12857   // We need to set ColumnLimit to zero, in order to stress nested alignments,
12858   // otherwise the function parameters will be re-flowed onto a single line.
12859   Alignment.ColumnLimit = 0;
12860   EXPECT_EQ("int    a(int   x,\n"
12861             "         float y);\n"
12862             "double b(int    x,\n"
12863             "         double y);",
12864             format("int a(int x,\n"
12865                    " float y);\n"
12866                    "double b(int x,\n"
12867                    " double y);",
12868                    Alignment));
12869   // This ensures that function parameters of function declarations are
12870   // correctly indented when their owning functions are indented.
12871   // The failure case here is for 'double y' to not be indented enough.
12872   EXPECT_EQ("double a(int x);\n"
12873             "int    b(int    y,\n"
12874             "         double z);",
12875             format("double a(int x);\n"
12876                    "int b(int y,\n"
12877                    " double z);",
12878                    Alignment));
12879   // Set ColumnLimit low so that we induce wrapping immediately after
12880   // the function name and opening paren.
12881   Alignment.ColumnLimit = 13;
12882   verifyFormat("int function(\n"
12883                "    int  x,\n"
12884                "    bool y);",
12885                Alignment);
12886   Alignment.ColumnLimit = OldColumnLimit;
12887   // Ensure function pointers don't screw up recursive alignment
12888   verifyFormat("int    a(int x, void (*fp)(int y));\n"
12889                "double b();",
12890                Alignment);
12891   Alignment.AlignConsecutiveAssignments = true;
12892   // Ensure recursive alignment is broken by function braces, so that the
12893   // "a = 1" does not align with subsequent assignments inside the function
12894   // body.
12895   verifyFormat("int func(int a = 1) {\n"
12896                "  int b  = 2;\n"
12897                "  int cc = 3;\n"
12898                "}",
12899                Alignment);
12900   verifyFormat("float      something = 2000;\n"
12901                "double     another   = 911;\n"
12902                "int        i = 1, j = 10;\n"
12903                "const int *oneMore = 1;\n"
12904                "unsigned   i       = 2;",
12905                Alignment);
12906   verifyFormat("int      oneTwoThree = {0}; // comment\n"
12907                "unsigned oneTwo      = 0;   // comment",
12908                Alignment);
12909   // Make sure that scope is correctly tracked, in the absence of braces
12910   verifyFormat("for (int i = 0; i < n; i++)\n"
12911                "  j = i;\n"
12912                "double x = 1;\n",
12913                Alignment);
12914   verifyFormat("if (int i = 0)\n"
12915                "  j = i;\n"
12916                "double x = 1;\n",
12917                Alignment);
12918   // Ensure operator[] and operator() are comprehended
12919   verifyFormat("struct test {\n"
12920                "  long long int foo();\n"
12921                "  int           operator[](int a);\n"
12922                "  double        bar();\n"
12923                "};\n",
12924                Alignment);
12925   verifyFormat("struct test {\n"
12926                "  long long int foo();\n"
12927                "  int           operator()(int a);\n"
12928                "  double        bar();\n"
12929                "};\n",
12930                Alignment);
12931   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
12932             "  int const i   = 1;\n"
12933             "  int *     j   = 2;\n"
12934             "  int       big = 10000;\n"
12935             "\n"
12936             "  unsigned oneTwoThree = 123;\n"
12937             "  int      oneTwo      = 12;\n"
12938             "  method();\n"
12939             "  float k  = 2;\n"
12940             "  int   ll = 10000;\n"
12941             "}",
12942             format("void SomeFunction(int parameter= 0) {\n"
12943                    " int const  i= 1;\n"
12944                    "  int *j=2;\n"
12945                    " int big  =  10000;\n"
12946                    "\n"
12947                    "unsigned oneTwoThree  =123;\n"
12948                    "int oneTwo = 12;\n"
12949                    "  method();\n"
12950                    "float k= 2;\n"
12951                    "int ll=10000;\n"
12952                    "}",
12953                    Alignment));
12954   Alignment.AlignConsecutiveAssignments = false;
12955   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
12956   verifyFormat("#define A \\\n"
12957                "  int       aaaa = 12; \\\n"
12958                "  float     b = 23; \\\n"
12959                "  const int ccc = 234; \\\n"
12960                "  unsigned  dddddddddd = 2345;",
12961                Alignment);
12962   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
12963   verifyFormat("#define A              \\\n"
12964                "  int       aaaa = 12; \\\n"
12965                "  float     b = 23;    \\\n"
12966                "  const int ccc = 234; \\\n"
12967                "  unsigned  dddddddddd = 2345;",
12968                Alignment);
12969   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
12970   Alignment.ColumnLimit = 30;
12971   verifyFormat("#define A                    \\\n"
12972                "  int       aaaa = 12;       \\\n"
12973                "  float     b = 23;          \\\n"
12974                "  const int ccc = 234;       \\\n"
12975                "  int       dddddddddd = 2345;",
12976                Alignment);
12977   Alignment.ColumnLimit = 80;
12978   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
12979                "k = 4, int l = 5,\n"
12980                "                  int m = 6) {\n"
12981                "  const int j = 10;\n"
12982                "  otherThing = 1;\n"
12983                "}",
12984                Alignment);
12985   verifyFormat("void SomeFunction(int parameter = 0) {\n"
12986                "  int const i = 1;\n"
12987                "  int *     j = 2;\n"
12988                "  int       big = 10000;\n"
12989                "}",
12990                Alignment);
12991   verifyFormat("class C {\n"
12992                "public:\n"
12993                "  int          i = 1;\n"
12994                "  virtual void f() = 0;\n"
12995                "};",
12996                Alignment);
12997   verifyFormat("float i = 1;\n"
12998                "if (SomeType t = getSomething()) {\n"
12999                "}\n"
13000                "const unsigned j = 2;\n"
13001                "int            big = 10000;",
13002                Alignment);
13003   verifyFormat("float j = 7;\n"
13004                "for (int k = 0; k < N; ++k) {\n"
13005                "}\n"
13006                "unsigned j = 2;\n"
13007                "int      big = 10000;\n"
13008                "}",
13009                Alignment);
13010   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
13011   verifyFormat("float              i = 1;\n"
13012                "LooooooooooongType loooooooooooooooooooooongVariable\n"
13013                "    = someLooooooooooooooooongFunction();\n"
13014                "int j = 2;",
13015                Alignment);
13016   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
13017   verifyFormat("int                i = 1;\n"
13018                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
13019                "    someLooooooooooooooooongFunction();\n"
13020                "int j = 2;",
13021                Alignment);
13022 
13023   Alignment.AlignConsecutiveAssignments = true;
13024   verifyFormat("auto lambda = []() {\n"
13025                "  auto  ii = 0;\n"
13026                "  float j  = 0;\n"
13027                "  return 0;\n"
13028                "};\n"
13029                "int   i  = 0;\n"
13030                "float i2 = 0;\n"
13031                "auto  v  = type{\n"
13032                "    i = 1,   //\n"
13033                "    (i = 2), //\n"
13034                "    i = 3    //\n"
13035                "};",
13036                Alignment);
13037   Alignment.AlignConsecutiveAssignments = false;
13038 
13039   verifyFormat(
13040       "int      i = 1;\n"
13041       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
13042       "                          loooooooooooooooooooooongParameterB);\n"
13043       "int      j = 2;",
13044       Alignment);
13045 
13046   // Test interactions with ColumnLimit and AlignConsecutiveAssignments:
13047   // We expect declarations and assignments to align, as long as it doesn't
13048   // exceed the column limit, starting a new alignment sequence whenever it
13049   // happens.
13050   Alignment.AlignConsecutiveAssignments = true;
13051   Alignment.ColumnLimit = 30;
13052   verifyFormat("float    ii              = 1;\n"
13053                "unsigned j               = 2;\n"
13054                "int someVerylongVariable = 1;\n"
13055                "AnotherLongType  ll = 123456;\n"
13056                "VeryVeryLongType k  = 2;\n"
13057                "int              myvar = 1;",
13058                Alignment);
13059   Alignment.ColumnLimit = 80;
13060   Alignment.AlignConsecutiveAssignments = false;
13061 
13062   verifyFormat(
13063       "template <typename LongTemplate, typename VeryLongTemplateTypeName,\n"
13064       "          typename LongType, typename B>\n"
13065       "auto foo() {}\n",
13066       Alignment);
13067   verifyFormat("float a, b = 1;\n"
13068                "int   c = 2;\n"
13069                "int   dd = 3;\n",
13070                Alignment);
13071   verifyFormat("int   aa = ((1 > 2) ? 3 : 4);\n"
13072                "float b[1][] = {{3.f}};\n",
13073                Alignment);
13074   Alignment.AlignConsecutiveAssignments = true;
13075   verifyFormat("float a, b = 1;\n"
13076                "int   c  = 2;\n"
13077                "int   dd = 3;\n",
13078                Alignment);
13079   verifyFormat("int   aa     = ((1 > 2) ? 3 : 4);\n"
13080                "float b[1][] = {{3.f}};\n",
13081                Alignment);
13082   Alignment.AlignConsecutiveAssignments = false;
13083 
13084   Alignment.ColumnLimit = 30;
13085   Alignment.BinPackParameters = false;
13086   verifyFormat("void foo(float     a,\n"
13087                "         float     b,\n"
13088                "         int       c,\n"
13089                "         uint32_t *d) {\n"
13090                "  int *  e = 0;\n"
13091                "  float  f = 0;\n"
13092                "  double g = 0;\n"
13093                "}\n"
13094                "void bar(ino_t     a,\n"
13095                "         int       b,\n"
13096                "         uint32_t *c,\n"
13097                "         bool      d) {}\n",
13098                Alignment);
13099   Alignment.BinPackParameters = true;
13100   Alignment.ColumnLimit = 80;
13101 
13102   // Bug 33507
13103   Alignment.PointerAlignment = FormatStyle::PAS_Middle;
13104   verifyFormat(
13105       "auto found = range::find_if(vsProducts, [&](auto * aProduct) {\n"
13106       "  static const Version verVs2017;\n"
13107       "  return true;\n"
13108       "});\n",
13109       Alignment);
13110   Alignment.PointerAlignment = FormatStyle::PAS_Right;
13111 
13112   // See llvm.org/PR35641
13113   Alignment.AlignConsecutiveDeclarations = true;
13114   verifyFormat("int func() { //\n"
13115                "  int      b;\n"
13116                "  unsigned c;\n"
13117                "}",
13118                Alignment);
13119 
13120   // See PR37175
13121   FormatStyle Style = getMozillaStyle();
13122   Style.AlignConsecutiveDeclarations = true;
13123   EXPECT_EQ("DECOR1 /**/ int8_t /**/ DECOR2 /**/\n"
13124             "foo(int a);",
13125             format("DECOR1 /**/ int8_t /**/ DECOR2 /**/ foo (int a);", Style));
13126 }
13127 
13128 TEST_F(FormatTest, LinuxBraceBreaking) {
13129   FormatStyle LinuxBraceStyle = getLLVMStyle();
13130   LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux;
13131   verifyFormat("namespace a\n"
13132                "{\n"
13133                "class A\n"
13134                "{\n"
13135                "  void f()\n"
13136                "  {\n"
13137                "    if (true) {\n"
13138                "      a();\n"
13139                "      b();\n"
13140                "    } else {\n"
13141                "      a();\n"
13142                "    }\n"
13143                "  }\n"
13144                "  void g() { return; }\n"
13145                "};\n"
13146                "struct B {\n"
13147                "  int x;\n"
13148                "};\n"
13149                "} // namespace a\n",
13150                LinuxBraceStyle);
13151   verifyFormat("enum X {\n"
13152                "  Y = 0,\n"
13153                "}\n",
13154                LinuxBraceStyle);
13155   verifyFormat("struct S {\n"
13156                "  int Type;\n"
13157                "  union {\n"
13158                "    int x;\n"
13159                "    double y;\n"
13160                "  } Value;\n"
13161                "  class C\n"
13162                "  {\n"
13163                "    MyFavoriteType Value;\n"
13164                "  } Class;\n"
13165                "}\n",
13166                LinuxBraceStyle);
13167 }
13168 
13169 TEST_F(FormatTest, MozillaBraceBreaking) {
13170   FormatStyle MozillaBraceStyle = getLLVMStyle();
13171   MozillaBraceStyle.BreakBeforeBraces = FormatStyle::BS_Mozilla;
13172   MozillaBraceStyle.FixNamespaceComments = false;
13173   verifyFormat("namespace a {\n"
13174                "class A\n"
13175                "{\n"
13176                "  void f()\n"
13177                "  {\n"
13178                "    if (true) {\n"
13179                "      a();\n"
13180                "      b();\n"
13181                "    }\n"
13182                "  }\n"
13183                "  void g() { return; }\n"
13184                "};\n"
13185                "enum E\n"
13186                "{\n"
13187                "  A,\n"
13188                "  // foo\n"
13189                "  B,\n"
13190                "  C\n"
13191                "};\n"
13192                "struct B\n"
13193                "{\n"
13194                "  int x;\n"
13195                "};\n"
13196                "}\n",
13197                MozillaBraceStyle);
13198   verifyFormat("struct S\n"
13199                "{\n"
13200                "  int Type;\n"
13201                "  union\n"
13202                "  {\n"
13203                "    int x;\n"
13204                "    double y;\n"
13205                "  } Value;\n"
13206                "  class C\n"
13207                "  {\n"
13208                "    MyFavoriteType Value;\n"
13209                "  } Class;\n"
13210                "}\n",
13211                MozillaBraceStyle);
13212 }
13213 
13214 TEST_F(FormatTest, StroustrupBraceBreaking) {
13215   FormatStyle StroustrupBraceStyle = getLLVMStyle();
13216   StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
13217   verifyFormat("namespace a {\n"
13218                "class A {\n"
13219                "  void f()\n"
13220                "  {\n"
13221                "    if (true) {\n"
13222                "      a();\n"
13223                "      b();\n"
13224                "    }\n"
13225                "  }\n"
13226                "  void g() { return; }\n"
13227                "};\n"
13228                "struct B {\n"
13229                "  int x;\n"
13230                "};\n"
13231                "} // namespace a\n",
13232                StroustrupBraceStyle);
13233 
13234   verifyFormat("void foo()\n"
13235                "{\n"
13236                "  if (a) {\n"
13237                "    a();\n"
13238                "  }\n"
13239                "  else {\n"
13240                "    b();\n"
13241                "  }\n"
13242                "}\n",
13243                StroustrupBraceStyle);
13244 
13245   verifyFormat("#ifdef _DEBUG\n"
13246                "int foo(int i = 0)\n"
13247                "#else\n"
13248                "int foo(int i = 5)\n"
13249                "#endif\n"
13250                "{\n"
13251                "  return i;\n"
13252                "}",
13253                StroustrupBraceStyle);
13254 
13255   verifyFormat("void foo() {}\n"
13256                "void bar()\n"
13257                "#ifdef _DEBUG\n"
13258                "{\n"
13259                "  foo();\n"
13260                "}\n"
13261                "#else\n"
13262                "{\n"
13263                "}\n"
13264                "#endif",
13265                StroustrupBraceStyle);
13266 
13267   verifyFormat("void foobar() { int i = 5; }\n"
13268                "#ifdef _DEBUG\n"
13269                "void bar() {}\n"
13270                "#else\n"
13271                "void bar() { foobar(); }\n"
13272                "#endif",
13273                StroustrupBraceStyle);
13274 }
13275 
13276 TEST_F(FormatTest, AllmanBraceBreaking) {
13277   FormatStyle AllmanBraceStyle = getLLVMStyle();
13278   AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman;
13279 
13280   EXPECT_EQ("namespace a\n"
13281             "{\n"
13282             "void f();\n"
13283             "void g();\n"
13284             "} // namespace a\n",
13285             format("namespace a\n"
13286                    "{\n"
13287                    "void f();\n"
13288                    "void g();\n"
13289                    "}\n",
13290                    AllmanBraceStyle));
13291 
13292   verifyFormat("namespace a\n"
13293                "{\n"
13294                "class A\n"
13295                "{\n"
13296                "  void f()\n"
13297                "  {\n"
13298                "    if (true)\n"
13299                "    {\n"
13300                "      a();\n"
13301                "      b();\n"
13302                "    }\n"
13303                "  }\n"
13304                "  void g() { return; }\n"
13305                "};\n"
13306                "struct B\n"
13307                "{\n"
13308                "  int x;\n"
13309                "};\n"
13310                "union C\n"
13311                "{\n"
13312                "};\n"
13313                "} // namespace a",
13314                AllmanBraceStyle);
13315 
13316   verifyFormat("void f()\n"
13317                "{\n"
13318                "  if (true)\n"
13319                "  {\n"
13320                "    a();\n"
13321                "  }\n"
13322                "  else if (false)\n"
13323                "  {\n"
13324                "    b();\n"
13325                "  }\n"
13326                "  else\n"
13327                "  {\n"
13328                "    c();\n"
13329                "  }\n"
13330                "}\n",
13331                AllmanBraceStyle);
13332 
13333   verifyFormat("void f()\n"
13334                "{\n"
13335                "  for (int i = 0; i < 10; ++i)\n"
13336                "  {\n"
13337                "    a();\n"
13338                "  }\n"
13339                "  while (false)\n"
13340                "  {\n"
13341                "    b();\n"
13342                "  }\n"
13343                "  do\n"
13344                "  {\n"
13345                "    c();\n"
13346                "  } while (false)\n"
13347                "}\n",
13348                AllmanBraceStyle);
13349 
13350   verifyFormat("void f(int a)\n"
13351                "{\n"
13352                "  switch (a)\n"
13353                "  {\n"
13354                "  case 0:\n"
13355                "    break;\n"
13356                "  case 1:\n"
13357                "  {\n"
13358                "    break;\n"
13359                "  }\n"
13360                "  case 2:\n"
13361                "  {\n"
13362                "  }\n"
13363                "  break;\n"
13364                "  default:\n"
13365                "    break;\n"
13366                "  }\n"
13367                "}\n",
13368                AllmanBraceStyle);
13369 
13370   verifyFormat("enum X\n"
13371                "{\n"
13372                "  Y = 0,\n"
13373                "}\n",
13374                AllmanBraceStyle);
13375   verifyFormat("enum X\n"
13376                "{\n"
13377                "  Y = 0\n"
13378                "}\n",
13379                AllmanBraceStyle);
13380 
13381   verifyFormat("@interface BSApplicationController ()\n"
13382                "{\n"
13383                "@private\n"
13384                "  id _extraIvar;\n"
13385                "}\n"
13386                "@end\n",
13387                AllmanBraceStyle);
13388 
13389   verifyFormat("#ifdef _DEBUG\n"
13390                "int foo(int i = 0)\n"
13391                "#else\n"
13392                "int foo(int i = 5)\n"
13393                "#endif\n"
13394                "{\n"
13395                "  return i;\n"
13396                "}",
13397                AllmanBraceStyle);
13398 
13399   verifyFormat("void foo() {}\n"
13400                "void bar()\n"
13401                "#ifdef _DEBUG\n"
13402                "{\n"
13403                "  foo();\n"
13404                "}\n"
13405                "#else\n"
13406                "{\n"
13407                "}\n"
13408                "#endif",
13409                AllmanBraceStyle);
13410 
13411   verifyFormat("void foobar() { int i = 5; }\n"
13412                "#ifdef _DEBUG\n"
13413                "void bar() {}\n"
13414                "#else\n"
13415                "void bar() { foobar(); }\n"
13416                "#endif",
13417                AllmanBraceStyle);
13418 
13419   // This shouldn't affect ObjC blocks..
13420   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
13421                "  // ...\n"
13422                "  int i;\n"
13423                "}];",
13424                AllmanBraceStyle);
13425   verifyFormat("void (^block)(void) = ^{\n"
13426                "  // ...\n"
13427                "  int i;\n"
13428                "};",
13429                AllmanBraceStyle);
13430   // .. or dict literals.
13431   verifyFormat("void f()\n"
13432                "{\n"
13433                "  // ...\n"
13434                "  [object someMethod:@{@\"a\" : @\"b\"}];\n"
13435                "}",
13436                AllmanBraceStyle);
13437   verifyFormat("void f()\n"
13438                "{\n"
13439                "  // ...\n"
13440                "  [object someMethod:@{a : @\"b\"}];\n"
13441                "}",
13442                AllmanBraceStyle);
13443   verifyFormat("int f()\n"
13444                "{ // comment\n"
13445                "  return 42;\n"
13446                "}",
13447                AllmanBraceStyle);
13448 
13449   AllmanBraceStyle.ColumnLimit = 19;
13450   verifyFormat("void f() { int i; }", AllmanBraceStyle);
13451   AllmanBraceStyle.ColumnLimit = 18;
13452   verifyFormat("void f()\n"
13453                "{\n"
13454                "  int i;\n"
13455                "}",
13456                AllmanBraceStyle);
13457   AllmanBraceStyle.ColumnLimit = 80;
13458 
13459   FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle;
13460   BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine =
13461       FormatStyle::SIS_WithoutElse;
13462   BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
13463   verifyFormat("void f(bool b)\n"
13464                "{\n"
13465                "  if (b)\n"
13466                "  {\n"
13467                "    return;\n"
13468                "  }\n"
13469                "}\n",
13470                BreakBeforeBraceShortIfs);
13471   verifyFormat("void f(bool b)\n"
13472                "{\n"
13473                "  if constexpr (b)\n"
13474                "  {\n"
13475                "    return;\n"
13476                "  }\n"
13477                "}\n",
13478                BreakBeforeBraceShortIfs);
13479   verifyFormat("void f(bool b)\n"
13480                "{\n"
13481                "  if CONSTEXPR (b)\n"
13482                "  {\n"
13483                "    return;\n"
13484                "  }\n"
13485                "}\n",
13486                BreakBeforeBraceShortIfs);
13487   verifyFormat("void f(bool b)\n"
13488                "{\n"
13489                "  if (b) return;\n"
13490                "}\n",
13491                BreakBeforeBraceShortIfs);
13492   verifyFormat("void f(bool b)\n"
13493                "{\n"
13494                "  if constexpr (b) return;\n"
13495                "}\n",
13496                BreakBeforeBraceShortIfs);
13497   verifyFormat("void f(bool b)\n"
13498                "{\n"
13499                "  if CONSTEXPR (b) return;\n"
13500                "}\n",
13501                BreakBeforeBraceShortIfs);
13502   verifyFormat("void f(bool b)\n"
13503                "{\n"
13504                "  while (b)\n"
13505                "  {\n"
13506                "    return;\n"
13507                "  }\n"
13508                "}\n",
13509                BreakBeforeBraceShortIfs);
13510 }
13511 
13512 TEST_F(FormatTest, WhitesmithsBraceBreaking) {
13513   FormatStyle WhitesmithsBraceStyle = getLLVMStyle();
13514   WhitesmithsBraceStyle.BreakBeforeBraces = FormatStyle::BS_Whitesmiths;
13515 
13516   // Make a few changes to the style for testing purposes
13517   WhitesmithsBraceStyle.AllowShortFunctionsOnASingleLine =
13518       FormatStyle::SFS_Empty;
13519   WhitesmithsBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
13520   WhitesmithsBraceStyle.ColumnLimit = 0;
13521 
13522   // FIXME: this test case can't decide whether there should be a blank line
13523   // after the ~D() line or not. It adds one if one doesn't exist in the test
13524   // and it removes the line if one exists.
13525   /*
13526   verifyFormat("class A;\n"
13527                "namespace B\n"
13528                "  {\n"
13529                "class C;\n"
13530                "// Comment\n"
13531                "class D\n"
13532                "  {\n"
13533                "public:\n"
13534                "  D();\n"
13535                "  ~D() {}\n"
13536                "private:\n"
13537                "  enum E\n"
13538                "    {\n"
13539                "    F\n"
13540                "    }\n"
13541                "  };\n"
13542                "  } // namespace B\n",
13543                WhitesmithsBraceStyle);
13544   */
13545 
13546   verifyFormat("namespace a\n"
13547                "  {\n"
13548                "class A\n"
13549                "  {\n"
13550                "  void f()\n"
13551                "    {\n"
13552                "    if (true)\n"
13553                "      {\n"
13554                "      a();\n"
13555                "      b();\n"
13556                "      }\n"
13557                "    }\n"
13558                "  void g()\n"
13559                "    {\n"
13560                "    return;\n"
13561                "    }\n"
13562                "  };\n"
13563                "struct B\n"
13564                "  {\n"
13565                "  int x;\n"
13566                "  };\n"
13567                "  } // namespace a",
13568                WhitesmithsBraceStyle);
13569 
13570   verifyFormat("void f()\n"
13571                "  {\n"
13572                "  if (true)\n"
13573                "    {\n"
13574                "    a();\n"
13575                "    }\n"
13576                "  else if (false)\n"
13577                "    {\n"
13578                "    b();\n"
13579                "    }\n"
13580                "  else\n"
13581                "    {\n"
13582                "    c();\n"
13583                "    }\n"
13584                "  }\n",
13585                WhitesmithsBraceStyle);
13586 
13587   verifyFormat("void f()\n"
13588                "  {\n"
13589                "  for (int i = 0; i < 10; ++i)\n"
13590                "    {\n"
13591                "    a();\n"
13592                "    }\n"
13593                "  while (false)\n"
13594                "    {\n"
13595                "    b();\n"
13596                "    }\n"
13597                "  do\n"
13598                "    {\n"
13599                "    c();\n"
13600                "    } while (false)\n"
13601                "  }\n",
13602                WhitesmithsBraceStyle);
13603 
13604   WhitesmithsBraceStyle.IndentCaseBlocks = true;
13605   verifyFormat("void switchTest1(int a)\n"
13606                "  {\n"
13607                "  switch (a)\n"
13608                "    {\n"
13609                "    case 2:\n"
13610                "      {\n"
13611                "      }\n"
13612                "    break;\n"
13613                "    }\n"
13614                "  }\n",
13615                WhitesmithsBraceStyle);
13616 
13617   verifyFormat("void switchTest2(int a)\n"
13618                "  {\n"
13619                "  switch (a)\n"
13620                "    {\n"
13621                "    case 0:\n"
13622                "    break;\n"
13623                "    case 1:\n"
13624                "      {\n"
13625                "      break;\n"
13626                "      }\n"
13627                "    case 2:\n"
13628                "      {\n"
13629                "      }\n"
13630                "    break;\n"
13631                "    default:\n"
13632                "    break;\n"
13633                "    }\n"
13634                "  }\n",
13635                WhitesmithsBraceStyle);
13636 
13637   verifyFormat("void switchTest3(int a)\n"
13638                "  {\n"
13639                "  switch (a)\n"
13640                "    {\n"
13641                "    case 0:\n"
13642                "      {\n"
13643                "      foo(x);\n"
13644                "      }\n"
13645                "    break;\n"
13646                "    default:\n"
13647                "      {\n"
13648                "      foo(1);\n"
13649                "      }\n"
13650                "    break;\n"
13651                "    }\n"
13652                "  }\n",
13653                WhitesmithsBraceStyle);
13654 
13655   WhitesmithsBraceStyle.IndentCaseBlocks = false;
13656 
13657   verifyFormat("void switchTest4(int a)\n"
13658                "  {\n"
13659                "  switch (a)\n"
13660                "    {\n"
13661                "  case 2:\n"
13662                "    {\n"
13663                "    }\n"
13664                "    break;\n"
13665                "    }\n"
13666                "  }\n",
13667                WhitesmithsBraceStyle);
13668 
13669   verifyFormat("void switchTest5(int a)\n"
13670                "  {\n"
13671                "  switch (a)\n"
13672                "    {\n"
13673                "  case 0:\n"
13674                "    break;\n"
13675                "  case 1:\n"
13676                "    {\n"
13677                "    foo();\n"
13678                "    break;\n"
13679                "    }\n"
13680                "  case 2:\n"
13681                "    {\n"
13682                "    }\n"
13683                "    break;\n"
13684                "  default:\n"
13685                "    break;\n"
13686                "    }\n"
13687                "  }\n",
13688                WhitesmithsBraceStyle);
13689 
13690   verifyFormat("void switchTest6(int a)\n"
13691                "  {\n"
13692                "  switch (a)\n"
13693                "    {\n"
13694                "  case 0:\n"
13695                "    {\n"
13696                "    foo(x);\n"
13697                "    }\n"
13698                "    break;\n"
13699                "  default:\n"
13700                "    {\n"
13701                "    foo(1);\n"
13702                "    }\n"
13703                "    break;\n"
13704                "    }\n"
13705                "  }\n",
13706                WhitesmithsBraceStyle);
13707 
13708   verifyFormat("enum X\n"
13709                "  {\n"
13710                "  Y = 0, // testing\n"
13711                "  }\n",
13712                WhitesmithsBraceStyle);
13713 
13714   verifyFormat("enum X\n"
13715                "  {\n"
13716                "  Y = 0\n"
13717                "  }\n",
13718                WhitesmithsBraceStyle);
13719   verifyFormat("enum X\n"
13720                "  {\n"
13721                "  Y = 0,\n"
13722                "  Z = 1\n"
13723                "  };\n",
13724                WhitesmithsBraceStyle);
13725 
13726   verifyFormat("@interface BSApplicationController ()\n"
13727                "  {\n"
13728                "@private\n"
13729                "  id _extraIvar;\n"
13730                "  }\n"
13731                "@end\n",
13732                WhitesmithsBraceStyle);
13733 
13734   verifyFormat("#ifdef _DEBUG\n"
13735                "int foo(int i = 0)\n"
13736                "#else\n"
13737                "int foo(int i = 5)\n"
13738                "#endif\n"
13739                "  {\n"
13740                "  return i;\n"
13741                "  }",
13742                WhitesmithsBraceStyle);
13743 
13744   verifyFormat("void foo() {}\n"
13745                "void bar()\n"
13746                "#ifdef _DEBUG\n"
13747                "  {\n"
13748                "  foo();\n"
13749                "  }\n"
13750                "#else\n"
13751                "  {\n"
13752                "  }\n"
13753                "#endif",
13754                WhitesmithsBraceStyle);
13755 
13756   verifyFormat("void foobar()\n"
13757                "  {\n"
13758                "  int i = 5;\n"
13759                "  }\n"
13760                "#ifdef _DEBUG\n"
13761                "void bar()\n"
13762                "  {\n"
13763                "  }\n"
13764                "#else\n"
13765                "void bar()\n"
13766                "  {\n"
13767                "  foobar();\n"
13768                "  }\n"
13769                "#endif",
13770                WhitesmithsBraceStyle);
13771 
13772   // This shouldn't affect ObjC blocks..
13773   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
13774                "  // ...\n"
13775                "  int i;\n"
13776                "}];",
13777                WhitesmithsBraceStyle);
13778   verifyFormat("void (^block)(void) = ^{\n"
13779                "  // ...\n"
13780                "  int i;\n"
13781                "};",
13782                WhitesmithsBraceStyle);
13783   // .. or dict literals.
13784   verifyFormat("void f()\n"
13785                "  {\n"
13786                "  [object someMethod:@{@\"a\" : @\"b\"}];\n"
13787                "  }",
13788                WhitesmithsBraceStyle);
13789 
13790   verifyFormat("int f()\n"
13791                "  { // comment\n"
13792                "  return 42;\n"
13793                "  }",
13794                WhitesmithsBraceStyle);
13795 
13796   FormatStyle BreakBeforeBraceShortIfs = WhitesmithsBraceStyle;
13797   BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine =
13798       FormatStyle::SIS_Always;
13799   BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
13800   verifyFormat("void f(bool b)\n"
13801                "  {\n"
13802                "  if (b)\n"
13803                "    {\n"
13804                "    return;\n"
13805                "    }\n"
13806                "  }\n",
13807                BreakBeforeBraceShortIfs);
13808   verifyFormat("void f(bool b)\n"
13809                "  {\n"
13810                "  if (b) return;\n"
13811                "  }\n",
13812                BreakBeforeBraceShortIfs);
13813   verifyFormat("void f(bool b)\n"
13814                "  {\n"
13815                "  while (b)\n"
13816                "    {\n"
13817                "    return;\n"
13818                "    }\n"
13819                "  }\n",
13820                BreakBeforeBraceShortIfs);
13821 }
13822 
13823 TEST_F(FormatTest, GNUBraceBreaking) {
13824   FormatStyle GNUBraceStyle = getLLVMStyle();
13825   GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU;
13826   verifyFormat("namespace a\n"
13827                "{\n"
13828                "class A\n"
13829                "{\n"
13830                "  void f()\n"
13831                "  {\n"
13832                "    int a;\n"
13833                "    {\n"
13834                "      int b;\n"
13835                "    }\n"
13836                "    if (true)\n"
13837                "      {\n"
13838                "        a();\n"
13839                "        b();\n"
13840                "      }\n"
13841                "  }\n"
13842                "  void g() { return; }\n"
13843                "}\n"
13844                "} // namespace a",
13845                GNUBraceStyle);
13846 
13847   verifyFormat("void f()\n"
13848                "{\n"
13849                "  if (true)\n"
13850                "    {\n"
13851                "      a();\n"
13852                "    }\n"
13853                "  else if (false)\n"
13854                "    {\n"
13855                "      b();\n"
13856                "    }\n"
13857                "  else\n"
13858                "    {\n"
13859                "      c();\n"
13860                "    }\n"
13861                "}\n",
13862                GNUBraceStyle);
13863 
13864   verifyFormat("void f()\n"
13865                "{\n"
13866                "  for (int i = 0; i < 10; ++i)\n"
13867                "    {\n"
13868                "      a();\n"
13869                "    }\n"
13870                "  while (false)\n"
13871                "    {\n"
13872                "      b();\n"
13873                "    }\n"
13874                "  do\n"
13875                "    {\n"
13876                "      c();\n"
13877                "    }\n"
13878                "  while (false);\n"
13879                "}\n",
13880                GNUBraceStyle);
13881 
13882   verifyFormat("void f(int a)\n"
13883                "{\n"
13884                "  switch (a)\n"
13885                "    {\n"
13886                "    case 0:\n"
13887                "      break;\n"
13888                "    case 1:\n"
13889                "      {\n"
13890                "        break;\n"
13891                "      }\n"
13892                "    case 2:\n"
13893                "      {\n"
13894                "      }\n"
13895                "      break;\n"
13896                "    default:\n"
13897                "      break;\n"
13898                "    }\n"
13899                "}\n",
13900                GNUBraceStyle);
13901 
13902   verifyFormat("enum X\n"
13903                "{\n"
13904                "  Y = 0,\n"
13905                "}\n",
13906                GNUBraceStyle);
13907 
13908   verifyFormat("@interface BSApplicationController ()\n"
13909                "{\n"
13910                "@private\n"
13911                "  id _extraIvar;\n"
13912                "}\n"
13913                "@end\n",
13914                GNUBraceStyle);
13915 
13916   verifyFormat("#ifdef _DEBUG\n"
13917                "int foo(int i = 0)\n"
13918                "#else\n"
13919                "int foo(int i = 5)\n"
13920                "#endif\n"
13921                "{\n"
13922                "  return i;\n"
13923                "}",
13924                GNUBraceStyle);
13925 
13926   verifyFormat("void foo() {}\n"
13927                "void bar()\n"
13928                "#ifdef _DEBUG\n"
13929                "{\n"
13930                "  foo();\n"
13931                "}\n"
13932                "#else\n"
13933                "{\n"
13934                "}\n"
13935                "#endif",
13936                GNUBraceStyle);
13937 
13938   verifyFormat("void foobar() { int i = 5; }\n"
13939                "#ifdef _DEBUG\n"
13940                "void bar() {}\n"
13941                "#else\n"
13942                "void bar() { foobar(); }\n"
13943                "#endif",
13944                GNUBraceStyle);
13945 }
13946 
13947 TEST_F(FormatTest, WebKitBraceBreaking) {
13948   FormatStyle WebKitBraceStyle = getLLVMStyle();
13949   WebKitBraceStyle.BreakBeforeBraces = FormatStyle::BS_WebKit;
13950   WebKitBraceStyle.FixNamespaceComments = false;
13951   verifyFormat("namespace a {\n"
13952                "class A {\n"
13953                "  void f()\n"
13954                "  {\n"
13955                "    if (true) {\n"
13956                "      a();\n"
13957                "      b();\n"
13958                "    }\n"
13959                "  }\n"
13960                "  void g() { return; }\n"
13961                "};\n"
13962                "enum E {\n"
13963                "  A,\n"
13964                "  // foo\n"
13965                "  B,\n"
13966                "  C\n"
13967                "};\n"
13968                "struct B {\n"
13969                "  int x;\n"
13970                "};\n"
13971                "}\n",
13972                WebKitBraceStyle);
13973   verifyFormat("struct S {\n"
13974                "  int Type;\n"
13975                "  union {\n"
13976                "    int x;\n"
13977                "    double y;\n"
13978                "  } Value;\n"
13979                "  class C {\n"
13980                "    MyFavoriteType Value;\n"
13981                "  } Class;\n"
13982                "};\n",
13983                WebKitBraceStyle);
13984 }
13985 
13986 TEST_F(FormatTest, CatchExceptionReferenceBinding) {
13987   verifyFormat("void f() {\n"
13988                "  try {\n"
13989                "  } catch (const Exception &e) {\n"
13990                "  }\n"
13991                "}\n",
13992                getLLVMStyle());
13993 }
13994 
13995 TEST_F(FormatTest, UnderstandsPragmas) {
13996   verifyFormat("#pragma omp reduction(| : var)");
13997   verifyFormat("#pragma omp reduction(+ : var)");
13998 
13999   EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string "
14000             "(including parentheses).",
14001             format("#pragma    mark   Any non-hyphenated or hyphenated string "
14002                    "(including parentheses)."));
14003 }
14004 
14005 TEST_F(FormatTest, UnderstandPragmaOption) {
14006   verifyFormat("#pragma option -C -A");
14007 
14008   EXPECT_EQ("#pragma option -C -A", format("#pragma    option   -C   -A"));
14009 }
14010 
14011 TEST_F(FormatTest, OptimizeBreakPenaltyVsExcess) {
14012   FormatStyle Style = getLLVMStyle();
14013   Style.ColumnLimit = 20;
14014 
14015   // See PR41213
14016   EXPECT_EQ("/*\n"
14017             " *\t9012345\n"
14018             " * /8901\n"
14019             " */",
14020             format("/*\n"
14021                    " *\t9012345 /8901\n"
14022                    " */",
14023                    Style));
14024   EXPECT_EQ("/*\n"
14025             " *345678\n"
14026             " *\t/8901\n"
14027             " */",
14028             format("/*\n"
14029                    " *345678\t/8901\n"
14030                    " */",
14031                    Style));
14032 
14033   verifyFormat("int a; // the\n"
14034                "       // comment",
14035                Style);
14036   EXPECT_EQ("int a; /* first line\n"
14037             "        * second\n"
14038             "        * line third\n"
14039             "        * line\n"
14040             "        */",
14041             format("int a; /* first line\n"
14042                    "        * second\n"
14043                    "        * line third\n"
14044                    "        * line\n"
14045                    "        */",
14046                    Style));
14047   EXPECT_EQ("int a; // first line\n"
14048             "       // second\n"
14049             "       // line third\n"
14050             "       // line",
14051             format("int a; // first line\n"
14052                    "       // second line\n"
14053                    "       // third line",
14054                    Style));
14055 
14056   Style.PenaltyExcessCharacter = 90;
14057   verifyFormat("int a; // the comment", Style);
14058   EXPECT_EQ("int a; // the comment\n"
14059             "       // aaa",
14060             format("int a; // the comment aaa", Style));
14061   EXPECT_EQ("int a; /* first line\n"
14062             "        * second line\n"
14063             "        * third line\n"
14064             "        */",
14065             format("int a; /* first line\n"
14066                    "        * second line\n"
14067                    "        * third line\n"
14068                    "        */",
14069                    Style));
14070   EXPECT_EQ("int a; // first line\n"
14071             "       // second line\n"
14072             "       // third line",
14073             format("int a; // first line\n"
14074                    "       // second line\n"
14075                    "       // third line",
14076                    Style));
14077   // FIXME: Investigate why this is not getting the same layout as the test
14078   // above.
14079   EXPECT_EQ("int a; /* first line\n"
14080             "        * second line\n"
14081             "        * third line\n"
14082             "        */",
14083             format("int a; /* first line second line third line"
14084                    "\n*/",
14085                    Style));
14086 
14087   EXPECT_EQ("// foo bar baz bazfoo\n"
14088             "// foo bar foo bar\n",
14089             format("// foo bar baz bazfoo\n"
14090                    "// foo bar foo           bar\n",
14091                    Style));
14092   EXPECT_EQ("// foo bar baz bazfoo\n"
14093             "// foo bar foo bar\n",
14094             format("// foo bar baz      bazfoo\n"
14095                    "// foo            bar foo bar\n",
14096                    Style));
14097 
14098   // FIXME: Optimally, we'd keep bazfoo on the first line and reflow bar to the
14099   // next one.
14100   EXPECT_EQ("// foo bar baz bazfoo\n"
14101             "// bar foo bar\n",
14102             format("// foo bar baz      bazfoo bar\n"
14103                    "// foo            bar\n",
14104                    Style));
14105 
14106   EXPECT_EQ("// foo bar baz bazfoo\n"
14107             "// foo bar baz bazfoo\n"
14108             "// bar foo bar\n",
14109             format("// foo bar baz      bazfoo\n"
14110                    "// foo bar baz      bazfoo bar\n"
14111                    "// foo bar\n",
14112                    Style));
14113 
14114   EXPECT_EQ("// foo bar baz bazfoo\n"
14115             "// foo bar baz bazfoo\n"
14116             "// bar foo bar\n",
14117             format("// foo bar baz      bazfoo\n"
14118                    "// foo bar baz      bazfoo bar\n"
14119                    "// foo           bar\n",
14120                    Style));
14121 
14122   // Make sure we do not keep protruding characters if strict mode reflow is
14123   // cheaper than keeping protruding characters.
14124   Style.ColumnLimit = 21;
14125   EXPECT_EQ(
14126       "// foo foo foo foo\n"
14127       "// foo foo foo foo\n"
14128       "// foo foo foo foo\n",
14129       format("// foo foo foo foo foo foo foo foo foo foo foo foo\n", Style));
14130 
14131   EXPECT_EQ("int a = /* long block\n"
14132             "           comment */\n"
14133             "    42;",
14134             format("int a = /* long block comment */ 42;", Style));
14135 }
14136 
14137 #define EXPECT_ALL_STYLES_EQUAL(Styles)                                        \
14138   for (size_t i = 1; i < Styles.size(); ++i)                                   \
14139   EXPECT_EQ(Styles[0], Styles[i])                                              \
14140       << "Style #" << i << " of " << Styles.size() << " differs from Style #0"
14141 
14142 TEST_F(FormatTest, GetsPredefinedStyleByName) {
14143   SmallVector<FormatStyle, 3> Styles;
14144   Styles.resize(3);
14145 
14146   Styles[0] = getLLVMStyle();
14147   EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1]));
14148   EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2]));
14149   EXPECT_ALL_STYLES_EQUAL(Styles);
14150 
14151   Styles[0] = getGoogleStyle();
14152   EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1]));
14153   EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2]));
14154   EXPECT_ALL_STYLES_EQUAL(Styles);
14155 
14156   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
14157   EXPECT_TRUE(
14158       getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1]));
14159   EXPECT_TRUE(
14160       getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2]));
14161   EXPECT_ALL_STYLES_EQUAL(Styles);
14162 
14163   Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp);
14164   EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1]));
14165   EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2]));
14166   EXPECT_ALL_STYLES_EQUAL(Styles);
14167 
14168   Styles[0] = getMozillaStyle();
14169   EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1]));
14170   EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2]));
14171   EXPECT_ALL_STYLES_EQUAL(Styles);
14172 
14173   Styles[0] = getWebKitStyle();
14174   EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1]));
14175   EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2]));
14176   EXPECT_ALL_STYLES_EQUAL(Styles);
14177 
14178   Styles[0] = getGNUStyle();
14179   EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1]));
14180   EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2]));
14181   EXPECT_ALL_STYLES_EQUAL(Styles);
14182 
14183   EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0]));
14184 }
14185 
14186 TEST_F(FormatTest, GetsCorrectBasedOnStyle) {
14187   SmallVector<FormatStyle, 8> Styles;
14188   Styles.resize(2);
14189 
14190   Styles[0] = getGoogleStyle();
14191   Styles[1] = getLLVMStyle();
14192   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
14193   EXPECT_ALL_STYLES_EQUAL(Styles);
14194 
14195   Styles.resize(5);
14196   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
14197   Styles[1] = getLLVMStyle();
14198   Styles[1].Language = FormatStyle::LK_JavaScript;
14199   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
14200 
14201   Styles[2] = getLLVMStyle();
14202   Styles[2].Language = FormatStyle::LK_JavaScript;
14203   EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n"
14204                                   "BasedOnStyle: Google",
14205                                   &Styles[2])
14206                    .value());
14207 
14208   Styles[3] = getLLVMStyle();
14209   Styles[3].Language = FormatStyle::LK_JavaScript;
14210   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n"
14211                                   "Language: JavaScript",
14212                                   &Styles[3])
14213                    .value());
14214 
14215   Styles[4] = getLLVMStyle();
14216   Styles[4].Language = FormatStyle::LK_JavaScript;
14217   EXPECT_EQ(0, parseConfiguration("---\n"
14218                                   "BasedOnStyle: LLVM\n"
14219                                   "IndentWidth: 123\n"
14220                                   "---\n"
14221                                   "BasedOnStyle: Google\n"
14222                                   "Language: JavaScript",
14223                                   &Styles[4])
14224                    .value());
14225   EXPECT_ALL_STYLES_EQUAL(Styles);
14226 }
14227 
14228 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME)                             \
14229   Style.FIELD = false;                                                         \
14230   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value());      \
14231   EXPECT_TRUE(Style.FIELD);                                                    \
14232   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value());     \
14233   EXPECT_FALSE(Style.FIELD);
14234 
14235 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD)
14236 
14237 #define CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, CONFIG_NAME)              \
14238   Style.STRUCT.FIELD = false;                                                  \
14239   EXPECT_EQ(0,                                                                 \
14240             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": true", &Style)   \
14241                 .value());                                                     \
14242   EXPECT_TRUE(Style.STRUCT.FIELD);                                             \
14243   EXPECT_EQ(0,                                                                 \
14244             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": false", &Style)  \
14245                 .value());                                                     \
14246   EXPECT_FALSE(Style.STRUCT.FIELD);
14247 
14248 #define CHECK_PARSE_NESTED_BOOL(STRUCT, FIELD)                                 \
14249   CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, #FIELD)
14250 
14251 #define CHECK_PARSE(TEXT, FIELD, VALUE)                                        \
14252   EXPECT_NE(VALUE, Style.FIELD) << "Initial value already the same!";          \
14253   EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value());                      \
14254   EXPECT_EQ(VALUE, Style.FIELD) << "Unexpected value after parsing!"
14255 
14256 TEST_F(FormatTest, ParsesConfigurationBools) {
14257   FormatStyle Style = {};
14258   Style.Language = FormatStyle::LK_Cpp;
14259   CHECK_PARSE_BOOL(AlignTrailingComments);
14260   CHECK_PARSE_BOOL(AlignConsecutiveAssignments);
14261   CHECK_PARSE_BOOL(AlignConsecutiveBitFields);
14262   CHECK_PARSE_BOOL(AlignConsecutiveDeclarations);
14263   CHECK_PARSE_BOOL(AlignConsecutiveMacros);
14264   CHECK_PARSE_BOOL(AllowAllArgumentsOnNextLine);
14265   CHECK_PARSE_BOOL(AllowAllConstructorInitializersOnNextLine);
14266   CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
14267   CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine);
14268   CHECK_PARSE_BOOL(AllowShortEnumsOnASingleLine);
14269   CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
14270   CHECK_PARSE_BOOL(BinPackArguments);
14271   CHECK_PARSE_BOOL(BinPackParameters);
14272   CHECK_PARSE_BOOL(BreakAfterJavaFieldAnnotations);
14273   CHECK_PARSE_BOOL(BreakBeforeConceptDeclarations);
14274   CHECK_PARSE_BOOL(BreakBeforeTernaryOperators);
14275   CHECK_PARSE_BOOL(BreakStringLiterals);
14276   CHECK_PARSE_BOOL(CompactNamespaces);
14277   CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine);
14278   CHECK_PARSE_BOOL(DeriveLineEnding);
14279   CHECK_PARSE_BOOL(DerivePointerAlignment);
14280   CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding");
14281   CHECK_PARSE_BOOL(DisableFormat);
14282   CHECK_PARSE_BOOL(IndentCaseLabels);
14283   CHECK_PARSE_BOOL(IndentCaseBlocks);
14284   CHECK_PARSE_BOOL(IndentGotoLabels);
14285   CHECK_PARSE_BOOL(IndentRequires);
14286   CHECK_PARSE_BOOL(IndentWrappedFunctionNames);
14287   CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks);
14288   CHECK_PARSE_BOOL(ObjCSpaceAfterProperty);
14289   CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
14290   CHECK_PARSE_BOOL(Cpp11BracedListStyle);
14291   CHECK_PARSE_BOOL(ReflowComments);
14292   CHECK_PARSE_BOOL(SortIncludes);
14293   CHECK_PARSE_BOOL(SortUsingDeclarations);
14294   CHECK_PARSE_BOOL(SpacesInParentheses);
14295   CHECK_PARSE_BOOL(SpacesInSquareBrackets);
14296   CHECK_PARSE_BOOL(SpacesInAngles);
14297   CHECK_PARSE_BOOL(SpacesInConditionalStatement);
14298   CHECK_PARSE_BOOL(SpaceInEmptyBlock);
14299   CHECK_PARSE_BOOL(SpaceInEmptyParentheses);
14300   CHECK_PARSE_BOOL(SpacesInContainerLiterals);
14301   CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses);
14302   CHECK_PARSE_BOOL(SpaceAfterCStyleCast);
14303   CHECK_PARSE_BOOL(SpaceAfterTemplateKeyword);
14304   CHECK_PARSE_BOOL(SpaceAfterLogicalNot);
14305   CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators);
14306   CHECK_PARSE_BOOL(SpaceBeforeCaseColon);
14307   CHECK_PARSE_BOOL(SpaceBeforeCpp11BracedList);
14308   CHECK_PARSE_BOOL(SpaceBeforeCtorInitializerColon);
14309   CHECK_PARSE_BOOL(SpaceBeforeInheritanceColon);
14310   CHECK_PARSE_BOOL(SpaceBeforeRangeBasedForLoopColon);
14311   CHECK_PARSE_BOOL(SpaceBeforeSquareBrackets);
14312   CHECK_PARSE_BOOL(UseCRLF);
14313 
14314   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterCaseLabel);
14315   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterClass);
14316   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterEnum);
14317   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterFunction);
14318   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterNamespace);
14319   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterObjCDeclaration);
14320   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterStruct);
14321   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterUnion);
14322   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterExternBlock);
14323   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeCatch);
14324   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeElse);
14325   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeLambdaBody);
14326   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeWhile);
14327   CHECK_PARSE_NESTED_BOOL(BraceWrapping, IndentBraces);
14328   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyFunction);
14329   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyRecord);
14330   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyNamespace);
14331 }
14332 
14333 #undef CHECK_PARSE_BOOL
14334 
14335 TEST_F(FormatTest, ParsesConfiguration) {
14336   FormatStyle Style = {};
14337   Style.Language = FormatStyle::LK_Cpp;
14338   CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234);
14339   CHECK_PARSE("ConstructorInitializerIndentWidth: 1234",
14340               ConstructorInitializerIndentWidth, 1234u);
14341   CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u);
14342   CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u);
14343   CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u);
14344   CHECK_PARSE("PenaltyBreakAssignment: 1234", PenaltyBreakAssignment, 1234u);
14345   CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234",
14346               PenaltyBreakBeforeFirstCallParameter, 1234u);
14347   CHECK_PARSE("PenaltyBreakTemplateDeclaration: 1234",
14348               PenaltyBreakTemplateDeclaration, 1234u);
14349   CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u);
14350   CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234",
14351               PenaltyReturnTypeOnItsOwnLine, 1234u);
14352   CHECK_PARSE("SpacesBeforeTrailingComments: 1234",
14353               SpacesBeforeTrailingComments, 1234u);
14354   CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u);
14355   CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u);
14356   CHECK_PARSE("CommentPragmas: '// abc$'", CommentPragmas, "// abc$");
14357 
14358   Style.PointerAlignment = FormatStyle::PAS_Middle;
14359   CHECK_PARSE("PointerAlignment: Left", PointerAlignment,
14360               FormatStyle::PAS_Left);
14361   CHECK_PARSE("PointerAlignment: Right", PointerAlignment,
14362               FormatStyle::PAS_Right);
14363   CHECK_PARSE("PointerAlignment: Middle", PointerAlignment,
14364               FormatStyle::PAS_Middle);
14365   // For backward compatibility:
14366   CHECK_PARSE("PointerBindsToType: Left", PointerAlignment,
14367               FormatStyle::PAS_Left);
14368   CHECK_PARSE("PointerBindsToType: Right", PointerAlignment,
14369               FormatStyle::PAS_Right);
14370   CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment,
14371               FormatStyle::PAS_Middle);
14372 
14373   Style.Standard = FormatStyle::LS_Auto;
14374   CHECK_PARSE("Standard: c++03", Standard, FormatStyle::LS_Cpp03);
14375   CHECK_PARSE("Standard: c++11", Standard, FormatStyle::LS_Cpp11);
14376   CHECK_PARSE("Standard: c++14", Standard, FormatStyle::LS_Cpp14);
14377   CHECK_PARSE("Standard: c++17", Standard, FormatStyle::LS_Cpp17);
14378   CHECK_PARSE("Standard: c++20", Standard, FormatStyle::LS_Cpp20);
14379   CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto);
14380   CHECK_PARSE("Standard: Latest", Standard, FormatStyle::LS_Latest);
14381   // Legacy aliases:
14382   CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03);
14383   CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Latest);
14384   CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03);
14385   CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11);
14386 
14387   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
14388   CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment",
14389               BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment);
14390   CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators,
14391               FormatStyle::BOS_None);
14392   CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators,
14393               FormatStyle::BOS_All);
14394   // For backward compatibility:
14395   CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators,
14396               FormatStyle::BOS_None);
14397   CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators,
14398               FormatStyle::BOS_All);
14399 
14400   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
14401   CHECK_PARSE("BreakConstructorInitializers: BeforeComma",
14402               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
14403   CHECK_PARSE("BreakConstructorInitializers: AfterColon",
14404               BreakConstructorInitializers, FormatStyle::BCIS_AfterColon);
14405   CHECK_PARSE("BreakConstructorInitializers: BeforeColon",
14406               BreakConstructorInitializers, FormatStyle::BCIS_BeforeColon);
14407   // For backward compatibility:
14408   CHECK_PARSE("BreakConstructorInitializersBeforeComma: true",
14409               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
14410 
14411   Style.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
14412   CHECK_PARSE("BreakInheritanceList: BeforeComma", BreakInheritanceList,
14413               FormatStyle::BILS_BeforeComma);
14414   CHECK_PARSE("BreakInheritanceList: AfterColon", BreakInheritanceList,
14415               FormatStyle::BILS_AfterColon);
14416   CHECK_PARSE("BreakInheritanceList: BeforeColon", BreakInheritanceList,
14417               FormatStyle::BILS_BeforeColon);
14418   // For backward compatibility:
14419   CHECK_PARSE("BreakBeforeInheritanceComma: true", BreakInheritanceList,
14420               FormatStyle::BILS_BeforeComma);
14421 
14422   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
14423   CHECK_PARSE("AlignAfterOpenBracket: Align", AlignAfterOpenBracket,
14424               FormatStyle::BAS_Align);
14425   CHECK_PARSE("AlignAfterOpenBracket: DontAlign", AlignAfterOpenBracket,
14426               FormatStyle::BAS_DontAlign);
14427   CHECK_PARSE("AlignAfterOpenBracket: AlwaysBreak", AlignAfterOpenBracket,
14428               FormatStyle::BAS_AlwaysBreak);
14429   // For backward compatibility:
14430   CHECK_PARSE("AlignAfterOpenBracket: false", AlignAfterOpenBracket,
14431               FormatStyle::BAS_DontAlign);
14432   CHECK_PARSE("AlignAfterOpenBracket: true", AlignAfterOpenBracket,
14433               FormatStyle::BAS_Align);
14434 
14435   Style.AlignEscapedNewlines = FormatStyle::ENAS_Left;
14436   CHECK_PARSE("AlignEscapedNewlines: DontAlign", AlignEscapedNewlines,
14437               FormatStyle::ENAS_DontAlign);
14438   CHECK_PARSE("AlignEscapedNewlines: Left", AlignEscapedNewlines,
14439               FormatStyle::ENAS_Left);
14440   CHECK_PARSE("AlignEscapedNewlines: Right", AlignEscapedNewlines,
14441               FormatStyle::ENAS_Right);
14442   // For backward compatibility:
14443   CHECK_PARSE("AlignEscapedNewlinesLeft: true", AlignEscapedNewlines,
14444               FormatStyle::ENAS_Left);
14445   CHECK_PARSE("AlignEscapedNewlinesLeft: false", AlignEscapedNewlines,
14446               FormatStyle::ENAS_Right);
14447 
14448   Style.AlignOperands = FormatStyle::OAS_Align;
14449   CHECK_PARSE("AlignOperands: DontAlign", AlignOperands,
14450               FormatStyle::OAS_DontAlign);
14451   CHECK_PARSE("AlignOperands: Align", AlignOperands, FormatStyle::OAS_Align);
14452   CHECK_PARSE("AlignOperands: AlignAfterOperator", AlignOperands,
14453               FormatStyle::OAS_AlignAfterOperator);
14454   // For backward compatibility:
14455   CHECK_PARSE("AlignOperands: false", AlignOperands,
14456               FormatStyle::OAS_DontAlign);
14457   CHECK_PARSE("AlignOperands: true", AlignOperands, FormatStyle::OAS_Align);
14458 
14459   Style.UseTab = FormatStyle::UT_ForIndentation;
14460   CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never);
14461   CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation);
14462   CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always);
14463   CHECK_PARSE("UseTab: ForContinuationAndIndentation", UseTab,
14464               FormatStyle::UT_ForContinuationAndIndentation);
14465   CHECK_PARSE("UseTab: AlignWithSpaces", UseTab,
14466               FormatStyle::UT_AlignWithSpaces);
14467   // For backward compatibility:
14468   CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never);
14469   CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always);
14470 
14471   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
14472   CHECK_PARSE("AllowShortBlocksOnASingleLine: Never",
14473               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
14474   CHECK_PARSE("AllowShortBlocksOnASingleLine: Empty",
14475               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Empty);
14476   CHECK_PARSE("AllowShortBlocksOnASingleLine: Always",
14477               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
14478   // For backward compatibility:
14479   CHECK_PARSE("AllowShortBlocksOnASingleLine: false",
14480               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
14481   CHECK_PARSE("AllowShortBlocksOnASingleLine: true",
14482               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
14483 
14484   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
14485   CHECK_PARSE("AllowShortFunctionsOnASingleLine: None",
14486               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
14487   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline",
14488               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline);
14489   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty",
14490               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty);
14491   CHECK_PARSE("AllowShortFunctionsOnASingleLine: All",
14492               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
14493   // For backward compatibility:
14494   CHECK_PARSE("AllowShortFunctionsOnASingleLine: false",
14495               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
14496   CHECK_PARSE("AllowShortFunctionsOnASingleLine: true",
14497               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
14498 
14499   Style.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Both;
14500   CHECK_PARSE("SpaceAroundPointerQualifiers: Default",
14501               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Default);
14502   CHECK_PARSE("SpaceAroundPointerQualifiers: Before",
14503               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Before);
14504   CHECK_PARSE("SpaceAroundPointerQualifiers: After",
14505               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_After);
14506   CHECK_PARSE("SpaceAroundPointerQualifiers: Both",
14507               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Both);
14508 
14509   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
14510   CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens,
14511               FormatStyle::SBPO_Never);
14512   CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens,
14513               FormatStyle::SBPO_Always);
14514   CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens,
14515               FormatStyle::SBPO_ControlStatements);
14516   CHECK_PARSE("SpaceBeforeParens: NonEmptyParentheses", SpaceBeforeParens,
14517               FormatStyle::SBPO_NonEmptyParentheses);
14518   // For backward compatibility:
14519   CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens,
14520               FormatStyle::SBPO_Never);
14521   CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens,
14522               FormatStyle::SBPO_ControlStatements);
14523 
14524   Style.ColumnLimit = 123;
14525   FormatStyle BaseStyle = getLLVMStyle();
14526   CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
14527   CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u);
14528 
14529   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
14530   CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces,
14531               FormatStyle::BS_Attach);
14532   CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces,
14533               FormatStyle::BS_Linux);
14534   CHECK_PARSE("BreakBeforeBraces: Mozilla", BreakBeforeBraces,
14535               FormatStyle::BS_Mozilla);
14536   CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces,
14537               FormatStyle::BS_Stroustrup);
14538   CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces,
14539               FormatStyle::BS_Allman);
14540   CHECK_PARSE("BreakBeforeBraces: Whitesmiths", BreakBeforeBraces,
14541               FormatStyle::BS_Whitesmiths);
14542   CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU);
14543   CHECK_PARSE("BreakBeforeBraces: WebKit", BreakBeforeBraces,
14544               FormatStyle::BS_WebKit);
14545   CHECK_PARSE("BreakBeforeBraces: Custom", BreakBeforeBraces,
14546               FormatStyle::BS_Custom);
14547 
14548   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Never;
14549   CHECK_PARSE("BraceWrapping:\n"
14550               "  AfterControlStatement: MultiLine",
14551               BraceWrapping.AfterControlStatement,
14552               FormatStyle::BWACS_MultiLine);
14553   CHECK_PARSE("BraceWrapping:\n"
14554               "  AfterControlStatement: Always",
14555               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
14556   CHECK_PARSE("BraceWrapping:\n"
14557               "  AfterControlStatement: Never",
14558               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
14559   // For backward compatibility:
14560   CHECK_PARSE("BraceWrapping:\n"
14561               "  AfterControlStatement: true",
14562               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
14563   CHECK_PARSE("BraceWrapping:\n"
14564               "  AfterControlStatement: false",
14565               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
14566 
14567   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
14568   CHECK_PARSE("AlwaysBreakAfterReturnType: None", AlwaysBreakAfterReturnType,
14569               FormatStyle::RTBS_None);
14570   CHECK_PARSE("AlwaysBreakAfterReturnType: All", AlwaysBreakAfterReturnType,
14571               FormatStyle::RTBS_All);
14572   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevel",
14573               AlwaysBreakAfterReturnType, FormatStyle::RTBS_TopLevel);
14574   CHECK_PARSE("AlwaysBreakAfterReturnType: AllDefinitions",
14575               AlwaysBreakAfterReturnType, FormatStyle::RTBS_AllDefinitions);
14576   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevelDefinitions",
14577               AlwaysBreakAfterReturnType,
14578               FormatStyle::RTBS_TopLevelDefinitions);
14579 
14580   Style.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
14581   CHECK_PARSE("AlwaysBreakTemplateDeclarations: No",
14582               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_No);
14583   CHECK_PARSE("AlwaysBreakTemplateDeclarations: MultiLine",
14584               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
14585   CHECK_PARSE("AlwaysBreakTemplateDeclarations: Yes",
14586               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
14587   CHECK_PARSE("AlwaysBreakTemplateDeclarations: false",
14588               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
14589   CHECK_PARSE("AlwaysBreakTemplateDeclarations: true",
14590               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
14591 
14592   Style.AlwaysBreakAfterDefinitionReturnType = FormatStyle::DRTBS_All;
14593   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: None",
14594               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_None);
14595   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: All",
14596               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_All);
14597   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: TopLevel",
14598               AlwaysBreakAfterDefinitionReturnType,
14599               FormatStyle::DRTBS_TopLevel);
14600 
14601   Style.NamespaceIndentation = FormatStyle::NI_All;
14602   CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation,
14603               FormatStyle::NI_None);
14604   CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation,
14605               FormatStyle::NI_Inner);
14606   CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation,
14607               FormatStyle::NI_All);
14608 
14609   Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Always;
14610   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Never",
14611               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
14612   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: WithoutElse",
14613               AllowShortIfStatementsOnASingleLine,
14614               FormatStyle::SIS_WithoutElse);
14615   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Always",
14616               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Always);
14617   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: false",
14618               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
14619   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: true",
14620               AllowShortIfStatementsOnASingleLine,
14621               FormatStyle::SIS_WithoutElse);
14622 
14623   Style.IndentExternBlock = FormatStyle::IEBS_NoIndent;
14624   CHECK_PARSE("IndentExternBlock: AfterExternBlock", IndentExternBlock,
14625               FormatStyle::IEBS_AfterExternBlock);
14626   CHECK_PARSE("IndentExternBlock: Indent", IndentExternBlock,
14627               FormatStyle::IEBS_Indent);
14628   CHECK_PARSE("IndentExternBlock: NoIndent", IndentExternBlock,
14629               FormatStyle::IEBS_NoIndent);
14630   CHECK_PARSE("IndentExternBlock: true", IndentExternBlock,
14631               FormatStyle::IEBS_Indent);
14632   CHECK_PARSE("IndentExternBlock: false", IndentExternBlock,
14633               FormatStyle::IEBS_NoIndent);
14634 
14635   Style.BitFieldColonSpacing = FormatStyle::BFCS_None;
14636   CHECK_PARSE("BitFieldColonSpacing: Both", BitFieldColonSpacing,
14637               FormatStyle::BFCS_Both);
14638   CHECK_PARSE("BitFieldColonSpacing: None", BitFieldColonSpacing,
14639               FormatStyle::BFCS_None);
14640   CHECK_PARSE("BitFieldColonSpacing: Before", BitFieldColonSpacing,
14641               FormatStyle::BFCS_Before);
14642   CHECK_PARSE("BitFieldColonSpacing: After", BitFieldColonSpacing,
14643               FormatStyle::BFCS_After);
14644 
14645   Style.SortJavaStaticImport = FormatStyle::SJSIO_Before;
14646   CHECK_PARSE("SortJavaStaticImport: After", SortJavaStaticImport,
14647               FormatStyle::SJSIO_After);
14648   CHECK_PARSE("SortJavaStaticImport: Before", SortJavaStaticImport,
14649               FormatStyle::SJSIO_Before);
14650 
14651   // FIXME: This is required because parsing a configuration simply overwrites
14652   // the first N elements of the list instead of resetting it.
14653   Style.ForEachMacros.clear();
14654   std::vector<std::string> BoostForeach;
14655   BoostForeach.push_back("BOOST_FOREACH");
14656   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach);
14657   std::vector<std::string> BoostAndQForeach;
14658   BoostAndQForeach.push_back("BOOST_FOREACH");
14659   BoostAndQForeach.push_back("Q_FOREACH");
14660   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros,
14661               BoostAndQForeach);
14662 
14663   Style.AttributeMacros.clear();
14664   CHECK_PARSE("BasedOnStyle: LLVM", AttributeMacros,
14665               std::vector<std::string>{"__capability"});
14666   CHECK_PARSE("AttributeMacros: [attr1, attr2]", AttributeMacros,
14667               std::vector<std::string>({"attr1", "attr2"}));
14668 
14669   Style.StatementMacros.clear();
14670   CHECK_PARSE("StatementMacros: [QUNUSED]", StatementMacros,
14671               std::vector<std::string>{"QUNUSED"});
14672   CHECK_PARSE("StatementMacros: [QUNUSED, QT_REQUIRE_VERSION]", StatementMacros,
14673               std::vector<std::string>({"QUNUSED", "QT_REQUIRE_VERSION"}));
14674 
14675   Style.NamespaceMacros.clear();
14676   CHECK_PARSE("NamespaceMacros: [TESTSUITE]", NamespaceMacros,
14677               std::vector<std::string>{"TESTSUITE"});
14678   CHECK_PARSE("NamespaceMacros: [TESTSUITE, SUITE]", NamespaceMacros,
14679               std::vector<std::string>({"TESTSUITE", "SUITE"}));
14680 
14681   Style.WhitespaceSensitiveMacros.clear();
14682   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE]",
14683               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
14684   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE, ASSERT]",
14685               WhitespaceSensitiveMacros,
14686               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
14687   Style.WhitespaceSensitiveMacros.clear();
14688   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE']",
14689               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
14690   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE', 'ASSERT']",
14691               WhitespaceSensitiveMacros,
14692               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
14693 
14694   Style.IncludeStyle.IncludeCategories.clear();
14695   std::vector<tooling::IncludeStyle::IncludeCategory> ExpectedCategories = {
14696       {"abc/.*", 2, 0, false}, {".*", 1, 0, true}};
14697   CHECK_PARSE("IncludeCategories:\n"
14698               "  - Regex: abc/.*\n"
14699               "    Priority: 2\n"
14700               "  - Regex: .*\n"
14701               "    Priority: 1\n"
14702               "    CaseSensitive: true\n",
14703               IncludeStyle.IncludeCategories, ExpectedCategories);
14704   CHECK_PARSE("IncludeIsMainRegex: 'abc$'", IncludeStyle.IncludeIsMainRegex,
14705               "abc$");
14706   CHECK_PARSE("IncludeIsMainSourceRegex: 'abc$'",
14707               IncludeStyle.IncludeIsMainSourceRegex, "abc$");
14708 
14709   Style.RawStringFormats.clear();
14710   std::vector<FormatStyle::RawStringFormat> ExpectedRawStringFormats = {
14711       {
14712           FormatStyle::LK_TextProto,
14713           {"pb", "proto"},
14714           {"PARSE_TEXT_PROTO"},
14715           /*CanonicalDelimiter=*/"",
14716           "llvm",
14717       },
14718       {
14719           FormatStyle::LK_Cpp,
14720           {"cc", "cpp"},
14721           {"C_CODEBLOCK", "CPPEVAL"},
14722           /*CanonicalDelimiter=*/"cc",
14723           /*BasedOnStyle=*/"",
14724       },
14725   };
14726 
14727   CHECK_PARSE("RawStringFormats:\n"
14728               "  - Language: TextProto\n"
14729               "    Delimiters:\n"
14730               "      - 'pb'\n"
14731               "      - 'proto'\n"
14732               "    EnclosingFunctions:\n"
14733               "      - 'PARSE_TEXT_PROTO'\n"
14734               "    BasedOnStyle: llvm\n"
14735               "  - Language: Cpp\n"
14736               "    Delimiters:\n"
14737               "      - 'cc'\n"
14738               "      - 'cpp'\n"
14739               "    EnclosingFunctions:\n"
14740               "      - 'C_CODEBLOCK'\n"
14741               "      - 'CPPEVAL'\n"
14742               "    CanonicalDelimiter: 'cc'",
14743               RawStringFormats, ExpectedRawStringFormats);
14744 }
14745 
14746 TEST_F(FormatTest, ParsesConfigurationWithLanguages) {
14747   FormatStyle Style = {};
14748   Style.Language = FormatStyle::LK_Cpp;
14749   CHECK_PARSE("Language: Cpp\n"
14750               "IndentWidth: 12",
14751               IndentWidth, 12u);
14752   EXPECT_EQ(parseConfiguration("Language: JavaScript\n"
14753                                "IndentWidth: 34",
14754                                &Style),
14755             ParseError::Unsuitable);
14756   FormatStyle BinPackedTCS = {};
14757   BinPackedTCS.Language = FormatStyle::LK_JavaScript;
14758   EXPECT_EQ(parseConfiguration("BinPackArguments: true\n"
14759                                "InsertTrailingCommas: Wrapped",
14760                                &BinPackedTCS),
14761             ParseError::BinPackTrailingCommaConflict);
14762   EXPECT_EQ(12u, Style.IndentWidth);
14763   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
14764   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
14765 
14766   Style.Language = FormatStyle::LK_JavaScript;
14767   CHECK_PARSE("Language: JavaScript\n"
14768               "IndentWidth: 12",
14769               IndentWidth, 12u);
14770   CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u);
14771   EXPECT_EQ(parseConfiguration("Language: Cpp\n"
14772                                "IndentWidth: 34",
14773                                &Style),
14774             ParseError::Unsuitable);
14775   EXPECT_EQ(23u, Style.IndentWidth);
14776   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
14777   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
14778 
14779   CHECK_PARSE("BasedOnStyle: LLVM\n"
14780               "IndentWidth: 67",
14781               IndentWidth, 67u);
14782 
14783   CHECK_PARSE("---\n"
14784               "Language: JavaScript\n"
14785               "IndentWidth: 12\n"
14786               "---\n"
14787               "Language: Cpp\n"
14788               "IndentWidth: 34\n"
14789               "...\n",
14790               IndentWidth, 12u);
14791 
14792   Style.Language = FormatStyle::LK_Cpp;
14793   CHECK_PARSE("---\n"
14794               "Language: JavaScript\n"
14795               "IndentWidth: 12\n"
14796               "---\n"
14797               "Language: Cpp\n"
14798               "IndentWidth: 34\n"
14799               "...\n",
14800               IndentWidth, 34u);
14801   CHECK_PARSE("---\n"
14802               "IndentWidth: 78\n"
14803               "---\n"
14804               "Language: JavaScript\n"
14805               "IndentWidth: 56\n"
14806               "...\n",
14807               IndentWidth, 78u);
14808 
14809   Style.ColumnLimit = 123;
14810   Style.IndentWidth = 234;
14811   Style.BreakBeforeBraces = FormatStyle::BS_Linux;
14812   Style.TabWidth = 345;
14813   EXPECT_FALSE(parseConfiguration("---\n"
14814                                   "IndentWidth: 456\n"
14815                                   "BreakBeforeBraces: Allman\n"
14816                                   "---\n"
14817                                   "Language: JavaScript\n"
14818                                   "IndentWidth: 111\n"
14819                                   "TabWidth: 111\n"
14820                                   "---\n"
14821                                   "Language: Cpp\n"
14822                                   "BreakBeforeBraces: Stroustrup\n"
14823                                   "TabWidth: 789\n"
14824                                   "...\n",
14825                                   &Style));
14826   EXPECT_EQ(123u, Style.ColumnLimit);
14827   EXPECT_EQ(456u, Style.IndentWidth);
14828   EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces);
14829   EXPECT_EQ(789u, Style.TabWidth);
14830 
14831   EXPECT_EQ(parseConfiguration("---\n"
14832                                "Language: JavaScript\n"
14833                                "IndentWidth: 56\n"
14834                                "---\n"
14835                                "IndentWidth: 78\n"
14836                                "...\n",
14837                                &Style),
14838             ParseError::Error);
14839   EXPECT_EQ(parseConfiguration("---\n"
14840                                "Language: JavaScript\n"
14841                                "IndentWidth: 56\n"
14842                                "---\n"
14843                                "Language: JavaScript\n"
14844                                "IndentWidth: 78\n"
14845                                "...\n",
14846                                &Style),
14847             ParseError::Error);
14848 
14849   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
14850 }
14851 
14852 #undef CHECK_PARSE
14853 
14854 TEST_F(FormatTest, UsesLanguageForBasedOnStyle) {
14855   FormatStyle Style = {};
14856   Style.Language = FormatStyle::LK_JavaScript;
14857   Style.BreakBeforeTernaryOperators = true;
14858   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value());
14859   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
14860 
14861   Style.BreakBeforeTernaryOperators = true;
14862   EXPECT_EQ(0, parseConfiguration("---\n"
14863                                   "BasedOnStyle: Google\n"
14864                                   "---\n"
14865                                   "Language: JavaScript\n"
14866                                   "IndentWidth: 76\n"
14867                                   "...\n",
14868                                   &Style)
14869                    .value());
14870   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
14871   EXPECT_EQ(76u, Style.IndentWidth);
14872   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
14873 }
14874 
14875 TEST_F(FormatTest, ConfigurationRoundTripTest) {
14876   FormatStyle Style = getLLVMStyle();
14877   std::string YAML = configurationAsText(Style);
14878   FormatStyle ParsedStyle = {};
14879   ParsedStyle.Language = FormatStyle::LK_Cpp;
14880   EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value());
14881   EXPECT_EQ(Style, ParsedStyle);
14882 }
14883 
14884 TEST_F(FormatTest, WorksFor8bitEncodings) {
14885   EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n"
14886             "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n"
14887             "\"\xe7\xe8\xec\xed\xfe\xfe \"\n"
14888             "\"\xef\xee\xf0\xf3...\"",
14889             format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 "
14890                    "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe "
14891                    "\xef\xee\xf0\xf3...\"",
14892                    getLLVMStyleWithColumns(12)));
14893 }
14894 
14895 TEST_F(FormatTest, HandlesUTF8BOM) {
14896   EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf"));
14897   EXPECT_EQ("\xef\xbb\xbf#include <iostream>",
14898             format("\xef\xbb\xbf#include <iostream>"));
14899   EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>",
14900             format("\xef\xbb\xbf\n#include <iostream>"));
14901 }
14902 
14903 // FIXME: Encode Cyrillic and CJK characters below to appease MS compilers.
14904 #if !defined(_MSC_VER)
14905 
14906 TEST_F(FormatTest, CountsUTF8CharactersProperly) {
14907   verifyFormat("\"Однажды в студёную зимнюю пору...\"",
14908                getLLVMStyleWithColumns(35));
14909   verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"",
14910                getLLVMStyleWithColumns(31));
14911   verifyFormat("// Однажды в студёную зимнюю пору...",
14912                getLLVMStyleWithColumns(36));
14913   verifyFormat("// 一 二 三 四 五 六 七 八 九 十", getLLVMStyleWithColumns(32));
14914   verifyFormat("/* Однажды в студёную зимнюю пору... */",
14915                getLLVMStyleWithColumns(39));
14916   verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */",
14917                getLLVMStyleWithColumns(35));
14918 }
14919 
14920 TEST_F(FormatTest, SplitsUTF8Strings) {
14921   // Non-printable characters' width is currently considered to be the length in
14922   // bytes in UTF8. The characters can be displayed in very different manner
14923   // (zero-width, single width with a substitution glyph, expanded to their code
14924   // (e.g. "<8d>"), so there's no single correct way to handle them.
14925   EXPECT_EQ("\"aaaaÄ\"\n"
14926             "\"\xc2\x8d\";",
14927             format("\"aaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
14928   EXPECT_EQ("\"aaaaaaaÄ\"\n"
14929             "\"\xc2\x8d\";",
14930             format("\"aaaaaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
14931   EXPECT_EQ("\"Однажды, в \"\n"
14932             "\"студёную \"\n"
14933             "\"зимнюю \"\n"
14934             "\"пору,\"",
14935             format("\"Однажды, в студёную зимнюю пору,\"",
14936                    getLLVMStyleWithColumns(13)));
14937   EXPECT_EQ(
14938       "\"一 二 三 \"\n"
14939       "\"四 五六 \"\n"
14940       "\"七 八 九 \"\n"
14941       "\"十\"",
14942       format("\"一 二 三 四 五六 七 八 九 十\"", getLLVMStyleWithColumns(11)));
14943   EXPECT_EQ("\"一\t\"\n"
14944             "\"二 \t\"\n"
14945             "\"三 四 \"\n"
14946             "\"五\t\"\n"
14947             "\"六 \t\"\n"
14948             "\"七 \"\n"
14949             "\"八九十\tqq\"",
14950             format("\"一\t二 \t三 四 五\t六 \t七 八九十\tqq\"",
14951                    getLLVMStyleWithColumns(11)));
14952 
14953   // UTF8 character in an escape sequence.
14954   EXPECT_EQ("\"aaaaaa\"\n"
14955             "\"\\\xC2\x8D\"",
14956             format("\"aaaaaa\\\xC2\x8D\"", getLLVMStyleWithColumns(10)));
14957 }
14958 
14959 TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) {
14960   EXPECT_EQ("const char *sssss =\n"
14961             "    \"一二三四五六七八\\\n"
14962             " 九 十\";",
14963             format("const char *sssss = \"一二三四五六七八\\\n"
14964                    " 九 十\";",
14965                    getLLVMStyleWithColumns(30)));
14966 }
14967 
14968 TEST_F(FormatTest, SplitsUTF8LineComments) {
14969   EXPECT_EQ("// aaaaÄ\xc2\x8d",
14970             format("// aaaaÄ\xc2\x8d", getLLVMStyleWithColumns(10)));
14971   EXPECT_EQ("// Я из лесу\n"
14972             "// вышел; был\n"
14973             "// сильный\n"
14974             "// мороз.",
14975             format("// Я из лесу вышел; был сильный мороз.",
14976                    getLLVMStyleWithColumns(13)));
14977   EXPECT_EQ("// 一二三\n"
14978             "// 四五六七\n"
14979             "// 八  九\n"
14980             "// 十",
14981             format("// 一二三 四五六七 八  九 十", getLLVMStyleWithColumns(9)));
14982 }
14983 
14984 TEST_F(FormatTest, SplitsUTF8BlockComments) {
14985   EXPECT_EQ("/* Гляжу,\n"
14986             " * поднимается\n"
14987             " * медленно в\n"
14988             " * гору\n"
14989             " * Лошадка,\n"
14990             " * везущая\n"
14991             " * хворосту\n"
14992             " * воз. */",
14993             format("/* Гляжу, поднимается медленно в гору\n"
14994                    " * Лошадка, везущая хворосту воз. */",
14995                    getLLVMStyleWithColumns(13)));
14996   EXPECT_EQ(
14997       "/* 一二三\n"
14998       " * 四五六七\n"
14999       " * 八  九\n"
15000       " * 十  */",
15001       format("/* 一二三 四五六七 八  九 十  */", getLLVMStyleWithColumns(9)));
15002   EXPECT_EQ("/* �������� ��������\n"
15003             " * ��������\n"
15004             " * ������-�� */",
15005             format("/* �������� �������� �������� ������-�� */", getLLVMStyleWithColumns(12)));
15006 }
15007 
15008 #endif // _MSC_VER
15009 
15010 TEST_F(FormatTest, ConstructorInitializerIndentWidth) {
15011   FormatStyle Style = getLLVMStyle();
15012 
15013   Style.ConstructorInitializerIndentWidth = 4;
15014   verifyFormat(
15015       "SomeClass::Constructor()\n"
15016       "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
15017       "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
15018       Style);
15019 
15020   Style.ConstructorInitializerIndentWidth = 2;
15021   verifyFormat(
15022       "SomeClass::Constructor()\n"
15023       "  : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
15024       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
15025       Style);
15026 
15027   Style.ConstructorInitializerIndentWidth = 0;
15028   verifyFormat(
15029       "SomeClass::Constructor()\n"
15030       ": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
15031       "  aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
15032       Style);
15033   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
15034   verifyFormat(
15035       "SomeLongTemplateVariableName<\n"
15036       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>",
15037       Style);
15038   verifyFormat("bool smaller = 1 < "
15039                "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
15040                "                       "
15041                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
15042                Style);
15043 
15044   Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
15045   verifyFormat("SomeClass::Constructor() :\n"
15046                "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa),\n"
15047                "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa) {}",
15048                Style);
15049 }
15050 
15051 TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) {
15052   FormatStyle Style = getLLVMStyle();
15053   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
15054   Style.ConstructorInitializerIndentWidth = 4;
15055   verifyFormat("SomeClass::Constructor()\n"
15056                "    : a(a)\n"
15057                "    , b(b)\n"
15058                "    , c(c) {}",
15059                Style);
15060   verifyFormat("SomeClass::Constructor()\n"
15061                "    : a(a) {}",
15062                Style);
15063 
15064   Style.ColumnLimit = 0;
15065   verifyFormat("SomeClass::Constructor()\n"
15066                "    : a(a) {}",
15067                Style);
15068   verifyFormat("SomeClass::Constructor() noexcept\n"
15069                "    : a(a) {}",
15070                Style);
15071   verifyFormat("SomeClass::Constructor()\n"
15072                "    : a(a)\n"
15073                "    , b(b)\n"
15074                "    , c(c) {}",
15075                Style);
15076   verifyFormat("SomeClass::Constructor()\n"
15077                "    : a(a) {\n"
15078                "  foo();\n"
15079                "  bar();\n"
15080                "}",
15081                Style);
15082 
15083   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
15084   verifyFormat("SomeClass::Constructor()\n"
15085                "    : a(a)\n"
15086                "    , b(b)\n"
15087                "    , c(c) {\n}",
15088                Style);
15089   verifyFormat("SomeClass::Constructor()\n"
15090                "    : a(a) {\n}",
15091                Style);
15092 
15093   Style.ColumnLimit = 80;
15094   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
15095   Style.ConstructorInitializerIndentWidth = 2;
15096   verifyFormat("SomeClass::Constructor()\n"
15097                "  : a(a)\n"
15098                "  , b(b)\n"
15099                "  , c(c) {}",
15100                Style);
15101 
15102   Style.ConstructorInitializerIndentWidth = 0;
15103   verifyFormat("SomeClass::Constructor()\n"
15104                ": a(a)\n"
15105                ", b(b)\n"
15106                ", c(c) {}",
15107                Style);
15108 
15109   Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
15110   Style.ConstructorInitializerIndentWidth = 4;
15111   verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style);
15112   verifyFormat(
15113       "SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n",
15114       Style);
15115   verifyFormat(
15116       "SomeClass::Constructor()\n"
15117       "    : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}",
15118       Style);
15119   Style.ConstructorInitializerIndentWidth = 4;
15120   Style.ColumnLimit = 60;
15121   verifyFormat("SomeClass::Constructor()\n"
15122                "    : aaaaaaaa(aaaaaaaa)\n"
15123                "    , aaaaaaaa(aaaaaaaa)\n"
15124                "    , aaaaaaaa(aaaaaaaa) {}",
15125                Style);
15126 }
15127 
15128 TEST_F(FormatTest, Destructors) {
15129   verifyFormat("void F(int &i) { i.~int(); }");
15130   verifyFormat("void F(int &i) { i->~int(); }");
15131 }
15132 
15133 TEST_F(FormatTest, FormatsWithWebKitStyle) {
15134   FormatStyle Style = getWebKitStyle();
15135 
15136   // Don't indent in outer namespaces.
15137   verifyFormat("namespace outer {\n"
15138                "int i;\n"
15139                "namespace inner {\n"
15140                "    int i;\n"
15141                "} // namespace inner\n"
15142                "} // namespace outer\n"
15143                "namespace other_outer {\n"
15144                "int i;\n"
15145                "}",
15146                Style);
15147 
15148   // Don't indent case labels.
15149   verifyFormat("switch (variable) {\n"
15150                "case 1:\n"
15151                "case 2:\n"
15152                "    doSomething();\n"
15153                "    break;\n"
15154                "default:\n"
15155                "    ++variable;\n"
15156                "}",
15157                Style);
15158 
15159   // Wrap before binary operators.
15160   EXPECT_EQ("void f()\n"
15161             "{\n"
15162             "    if (aaaaaaaaaaaaaaaa\n"
15163             "        && bbbbbbbbbbbbbbbbbbbbbbbb\n"
15164             "        && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
15165             "        return;\n"
15166             "}",
15167             format("void f() {\n"
15168                    "if (aaaaaaaaaaaaaaaa\n"
15169                    "&& bbbbbbbbbbbbbbbbbbbbbbbb\n"
15170                    "&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
15171                    "return;\n"
15172                    "}",
15173                    Style));
15174 
15175   // Allow functions on a single line.
15176   verifyFormat("void f() { return; }", Style);
15177 
15178   // Allow empty blocks on a single line and insert a space in empty blocks.
15179   EXPECT_EQ("void f() { }", format("void f() {}", Style));
15180   EXPECT_EQ("while (true) { }", format("while (true) {}", Style));
15181   // However, don't merge non-empty short loops.
15182   EXPECT_EQ("while (true) {\n"
15183             "    continue;\n"
15184             "}",
15185             format("while (true) { continue; }", Style));
15186 
15187   // Constructor initializers are formatted one per line with the "," on the
15188   // new line.
15189   verifyFormat("Constructor()\n"
15190                "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
15191                "    , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n"
15192                "          aaaaaaaaaaaaaa)\n"
15193                "    , aaaaaaaaaaaaaaaaaaaaaaa()\n"
15194                "{\n"
15195                "}",
15196                Style);
15197   verifyFormat("SomeClass::Constructor()\n"
15198                "    : a(a)\n"
15199                "{\n"
15200                "}",
15201                Style);
15202   EXPECT_EQ("SomeClass::Constructor()\n"
15203             "    : a(a)\n"
15204             "{\n"
15205             "}",
15206             format("SomeClass::Constructor():a(a){}", Style));
15207   verifyFormat("SomeClass::Constructor()\n"
15208                "    : a(a)\n"
15209                "    , b(b)\n"
15210                "    , c(c)\n"
15211                "{\n"
15212                "}",
15213                Style);
15214   verifyFormat("SomeClass::Constructor()\n"
15215                "    : a(a)\n"
15216                "{\n"
15217                "    foo();\n"
15218                "    bar();\n"
15219                "}",
15220                Style);
15221 
15222   // Access specifiers should be aligned left.
15223   verifyFormat("class C {\n"
15224                "public:\n"
15225                "    int i;\n"
15226                "};",
15227                Style);
15228 
15229   // Do not align comments.
15230   verifyFormat("int a; // Do not\n"
15231                "double b; // align comments.",
15232                Style);
15233 
15234   // Do not align operands.
15235   EXPECT_EQ("ASSERT(aaaa\n"
15236             "    || bbbb);",
15237             format("ASSERT ( aaaa\n||bbbb);", Style));
15238 
15239   // Accept input's line breaks.
15240   EXPECT_EQ("if (aaaaaaaaaaaaaaa\n"
15241             "    || bbbbbbbbbbbbbbb) {\n"
15242             "    i++;\n"
15243             "}",
15244             format("if (aaaaaaaaaaaaaaa\n"
15245                    "|| bbbbbbbbbbbbbbb) { i++; }",
15246                    Style));
15247   EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n"
15248             "    i++;\n"
15249             "}",
15250             format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style));
15251 
15252   // Don't automatically break all macro definitions (llvm.org/PR17842).
15253   verifyFormat("#define aNumber 10", Style);
15254   // However, generally keep the line breaks that the user authored.
15255   EXPECT_EQ("#define aNumber \\\n"
15256             "    10",
15257             format("#define aNumber \\\n"
15258                    " 10",
15259                    Style));
15260 
15261   // Keep empty and one-element array literals on a single line.
15262   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n"
15263             "                                  copyItems:YES];",
15264             format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n"
15265                    "copyItems:YES];",
15266                    Style));
15267   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n"
15268             "                                  copyItems:YES];",
15269             format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n"
15270                    "             copyItems:YES];",
15271                    Style));
15272   // FIXME: This does not seem right, there should be more indentation before
15273   // the array literal's entries. Nested blocks have the same problem.
15274   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
15275             "    @\"a\",\n"
15276             "    @\"a\"\n"
15277             "]\n"
15278             "                                  copyItems:YES];",
15279             format("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
15280                    "     @\"a\",\n"
15281                    "     @\"a\"\n"
15282                    "     ]\n"
15283                    "       copyItems:YES];",
15284                    Style));
15285   EXPECT_EQ(
15286       "NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
15287       "                                  copyItems:YES];",
15288       format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
15289              "   copyItems:YES];",
15290              Style));
15291 
15292   verifyFormat("[self.a b:c c:d];", Style);
15293   EXPECT_EQ("[self.a b:c\n"
15294             "        c:d];",
15295             format("[self.a b:c\n"
15296                    "c:d];",
15297                    Style));
15298 }
15299 
15300 TEST_F(FormatTest, FormatsLambdas) {
15301   verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n");
15302   verifyFormat(
15303       "int c = [b]() mutable noexcept { return [&b] { return b++; }(); }();\n");
15304   verifyFormat("int c = [&] { [=] { return b++; }(); }();\n");
15305   verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n");
15306   verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n");
15307   verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n");
15308   verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n");
15309   verifyFormat("auto c = [a = [b = 42] {}] {};\n");
15310   verifyFormat("auto c = [a = &i + 10, b = [] {}] {};\n");
15311   verifyFormat("int x = f(*+[] {});");
15312   verifyFormat("void f() {\n"
15313                "  other(x.begin(), x.end(), [&](int, int) { return 1; });\n"
15314                "}\n");
15315   verifyFormat("void f() {\n"
15316                "  other(x.begin(), //\n"
15317                "        x.end(),   //\n"
15318                "        [&](int, int) { return 1; });\n"
15319                "}\n");
15320   verifyFormat("void f() {\n"
15321                "  other.other.other.other.other(\n"
15322                "      x.begin(), x.end(),\n"
15323                "      [something, rather](int, int, int, int, int, int, int) { "
15324                "return 1; });\n"
15325                "}\n");
15326   verifyFormat(
15327       "void f() {\n"
15328       "  other.other.other.other.other(\n"
15329       "      x.begin(), x.end(),\n"
15330       "      [something, rather](int, int, int, int, int, int, int) {\n"
15331       "        //\n"
15332       "      });\n"
15333       "}\n");
15334   verifyFormat("SomeFunction([]() { // A cool function...\n"
15335                "  return 43;\n"
15336                "});");
15337   EXPECT_EQ("SomeFunction([]() {\n"
15338             "#define A a\n"
15339             "  return 43;\n"
15340             "});",
15341             format("SomeFunction([](){\n"
15342                    "#define A a\n"
15343                    "return 43;\n"
15344                    "});"));
15345   verifyFormat("void f() {\n"
15346                "  SomeFunction([](decltype(x), A *a) {});\n"
15347                "  SomeFunction([](typeof(x), A *a) {});\n"
15348                "  SomeFunction([](_Atomic(x), A *a) {});\n"
15349                "  SomeFunction([](__underlying_type(x), A *a) {});\n"
15350                "}");
15351   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
15352                "    [](const aaaaaaaaaa &a) { return a; });");
15353   verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n"
15354                "  SomeOtherFunctioooooooooooooooooooooooooon();\n"
15355                "});");
15356   verifyFormat("Constructor()\n"
15357                "    : Field([] { // comment\n"
15358                "        int i;\n"
15359                "      }) {}");
15360   verifyFormat("auto my_lambda = [](const string &some_parameter) {\n"
15361                "  return some_parameter.size();\n"
15362                "};");
15363   verifyFormat("std::function<std::string(const std::string &)> my_lambda =\n"
15364                "    [](const string &s) { return s; };");
15365   verifyFormat("int i = aaaaaa ? 1 //\n"
15366                "               : [] {\n"
15367                "                   return 2; //\n"
15368                "                 }();");
15369   verifyFormat("llvm::errs() << \"number of twos is \"\n"
15370                "             << std::count_if(v.begin(), v.end(), [](int x) {\n"
15371                "                  return x == 2; // force break\n"
15372                "                });");
15373   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
15374                "    [=](int iiiiiiiiiiii) {\n"
15375                "      return aaaaaaaaaaaaaaaaaaaaaaa !=\n"
15376                "             aaaaaaaaaaaaaaaaaaaaaaa;\n"
15377                "    });",
15378                getLLVMStyleWithColumns(60));
15379   verifyFormat("SomeFunction({[&] {\n"
15380                "                // comment\n"
15381                "              },\n"
15382                "              [&] {\n"
15383                "                // comment\n"
15384                "              }});");
15385   verifyFormat("SomeFunction({[&] {\n"
15386                "  // comment\n"
15387                "}});");
15388   verifyFormat(
15389       "virtual aaaaaaaaaaaaaaaa(\n"
15390       "    std::function<bool()> bbbbbbbbbbbb = [&]() { return true; },\n"
15391       "    aaaaa aaaaaaaaa);");
15392 
15393   // Lambdas with return types.
15394   verifyFormat("int c = []() -> int { return 2; }();\n");
15395   verifyFormat("int c = []() -> int * { return 2; }();\n");
15396   verifyFormat("int c = []() -> vector<int> { return {2}; }();\n");
15397   verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());");
15398   verifyGoogleFormat("auto a = [&b, c](D* d) -> D* {};");
15399   verifyGoogleFormat("auto a = [&b, c](D* d) -> pair<D*, D*> {};");
15400   verifyGoogleFormat("auto a = [&b, c](D* d) -> D& {};");
15401   verifyGoogleFormat("auto a = [&b, c](D* d) -> const D* {};");
15402   verifyFormat("[a, a]() -> a<1> {};");
15403   verifyFormat("[]() -> foo<5 + 2> { return {}; };");
15404   verifyFormat("[]() -> foo<5 - 2> { return {}; };");
15405   verifyFormat("[]() -> foo<5 / 2> { return {}; };");
15406   verifyFormat("[]() -> foo<5 * 2> { return {}; };");
15407   verifyFormat("[]() -> foo<5 % 2> { return {}; };");
15408   verifyFormat("[]() -> foo<5 << 2> { return {}; };");
15409   verifyFormat("[]() -> foo<!5> { return {}; };");
15410   verifyFormat("[]() -> foo<~5> { return {}; };");
15411   verifyFormat("[]() -> foo<5 | 2> { return {}; };");
15412   verifyFormat("[]() -> foo<5 || 2> { return {}; };");
15413   verifyFormat("[]() -> foo<5 & 2> { return {}; };");
15414   verifyFormat("[]() -> foo<5 && 2> { return {}; };");
15415   verifyFormat("[]() -> foo<5 == 2> { return {}; };");
15416   verifyFormat("[]() -> foo<5 != 2> { return {}; };");
15417   verifyFormat("[]() -> foo<5 >= 2> { return {}; };");
15418   verifyFormat("[]() -> foo<5 <= 2> { return {}; };");
15419   verifyFormat("[]() -> foo<5 < 2> { return {}; };");
15420   verifyFormat("[]() -> foo<2 ? 1 : 0> { return {}; };");
15421   verifyFormat("namespace bar {\n"
15422                "// broken:\n"
15423                "auto foo{[]() -> foo<5 + 2> { return {}; }};\n"
15424                "} // namespace bar");
15425   verifyFormat("namespace bar {\n"
15426                "// broken:\n"
15427                "auto foo{[]() -> foo<5 - 2> { return {}; }};\n"
15428                "} // namespace bar");
15429   verifyFormat("namespace bar {\n"
15430                "// broken:\n"
15431                "auto foo{[]() -> foo<5 / 2> { return {}; }};\n"
15432                "} // namespace bar");
15433   verifyFormat("namespace bar {\n"
15434                "// broken:\n"
15435                "auto foo{[]() -> foo<5 * 2> { return {}; }};\n"
15436                "} // namespace bar");
15437   verifyFormat("namespace bar {\n"
15438                "// broken:\n"
15439                "auto foo{[]() -> foo<5 % 2> { return {}; }};\n"
15440                "} // namespace bar");
15441   verifyFormat("namespace bar {\n"
15442                "// broken:\n"
15443                "auto foo{[]() -> foo<5 << 2> { return {}; }};\n"
15444                "} // namespace bar");
15445   verifyFormat("namespace bar {\n"
15446                "// broken:\n"
15447                "auto foo{[]() -> foo<!5> { return {}; }};\n"
15448                "} // namespace bar");
15449   verifyFormat("namespace bar {\n"
15450                "// broken:\n"
15451                "auto foo{[]() -> foo<~5> { return {}; }};\n"
15452                "} // namespace bar");
15453   verifyFormat("namespace bar {\n"
15454                "// broken:\n"
15455                "auto foo{[]() -> foo<5 | 2> { return {}; }};\n"
15456                "} // namespace bar");
15457   verifyFormat("namespace bar {\n"
15458                "// broken:\n"
15459                "auto foo{[]() -> foo<5 || 2> { return {}; }};\n"
15460                "} // namespace bar");
15461   verifyFormat("namespace bar {\n"
15462                "// broken:\n"
15463                "auto foo{[]() -> foo<5 & 2> { return {}; }};\n"
15464                "} // namespace bar");
15465   verifyFormat("namespace bar {\n"
15466                "// broken:\n"
15467                "auto foo{[]() -> foo<5 && 2> { return {}; }};\n"
15468                "} // namespace bar");
15469   verifyFormat("namespace bar {\n"
15470                "// broken:\n"
15471                "auto foo{[]() -> foo<5 == 2> { return {}; }};\n"
15472                "} // namespace bar");
15473   verifyFormat("namespace bar {\n"
15474                "// broken:\n"
15475                "auto foo{[]() -> foo<5 != 2> { return {}; }};\n"
15476                "} // namespace bar");
15477   verifyFormat("namespace bar {\n"
15478                "// broken:\n"
15479                "auto foo{[]() -> foo<5 >= 2> { return {}; }};\n"
15480                "} // namespace bar");
15481   verifyFormat("namespace bar {\n"
15482                "// broken:\n"
15483                "auto foo{[]() -> foo<5 <= 2> { return {}; }};\n"
15484                "} // namespace bar");
15485   verifyFormat("namespace bar {\n"
15486                "// broken:\n"
15487                "auto foo{[]() -> foo<5 < 2> { return {}; }};\n"
15488                "} // namespace bar");
15489   verifyFormat("namespace bar {\n"
15490                "// broken:\n"
15491                "auto foo{[]() -> foo<2 ? 1 : 0> { return {}; }};\n"
15492                "} // namespace bar");
15493   verifyFormat("[]() -> a<1> {};");
15494   verifyFormat("[]() -> a<1> { ; };");
15495   verifyFormat("[]() -> a<1> { ; }();");
15496   verifyFormat("[a, a]() -> a<true> {};");
15497   verifyFormat("[]() -> a<true> {};");
15498   verifyFormat("[]() -> a<true> { ; };");
15499   verifyFormat("[]() -> a<true> { ; }();");
15500   verifyFormat("[a, a]() -> a<false> {};");
15501   verifyFormat("[]() -> a<false> {};");
15502   verifyFormat("[]() -> a<false> { ; };");
15503   verifyFormat("[]() -> a<false> { ; }();");
15504   verifyFormat("auto foo{[]() -> foo<false> { ; }};");
15505   verifyFormat("namespace bar {\n"
15506                "auto foo{[]() -> foo<false> { ; }};\n"
15507                "} // namespace bar");
15508   verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n"
15509                "                   int j) -> int {\n"
15510                "  return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n"
15511                "};");
15512   verifyFormat(
15513       "aaaaaaaaaaaaaaaaaaaaaa(\n"
15514       "    [](aaaaaaaaaaaaaaaaaaaaaaaaaaa &aaa) -> aaaaaaaaaaaaaaaa {\n"
15515       "      return aaaaaaaaaaaaaaaaa;\n"
15516       "    });",
15517       getLLVMStyleWithColumns(70));
15518   verifyFormat("[]() //\n"
15519                "    -> int {\n"
15520                "  return 1; //\n"
15521                "};");
15522   verifyFormat("[]() -> Void<T...> {};");
15523   verifyFormat("[a, b]() -> Tuple<T...> { return {}; };");
15524 
15525   // Lambdas with explicit template argument lists.
15526   verifyFormat(
15527       "auto L = []<template <typename> class T, class U>(T<U> &&a) {};\n");
15528 
15529   // Multiple lambdas in the same parentheses change indentation rules. These
15530   // lambdas are forced to start on new lines.
15531   verifyFormat("SomeFunction(\n"
15532                "    []() {\n"
15533                "      //\n"
15534                "    },\n"
15535                "    []() {\n"
15536                "      //\n"
15537                "    });");
15538 
15539   // A lambda passed as arg0 is always pushed to the next line.
15540   verifyFormat("SomeFunction(\n"
15541                "    [this] {\n"
15542                "      //\n"
15543                "    },\n"
15544                "    1);\n");
15545 
15546   // A multi-line lambda passed as arg1 forces arg0 to be pushed out, just like
15547   // the arg0 case above.
15548   auto Style = getGoogleStyle();
15549   Style.BinPackArguments = false;
15550   verifyFormat("SomeFunction(\n"
15551                "    a,\n"
15552                "    [this] {\n"
15553                "      //\n"
15554                "    },\n"
15555                "    b);\n",
15556                Style);
15557   verifyFormat("SomeFunction(\n"
15558                "    a,\n"
15559                "    [this] {\n"
15560                "      //\n"
15561                "    },\n"
15562                "    b);\n");
15563 
15564   // A lambda with a very long line forces arg0 to be pushed out irrespective of
15565   // the BinPackArguments value (as long as the code is wide enough).
15566   verifyFormat(
15567       "something->SomeFunction(\n"
15568       "    a,\n"
15569       "    [this] {\n"
15570       "      "
15571       "D0000000000000000000000000000000000000000000000000000000000001();\n"
15572       "    },\n"
15573       "    b);\n");
15574 
15575   // A multi-line lambda is pulled up as long as the introducer fits on the
15576   // previous line and there are no further args.
15577   verifyFormat("function(1, [this, that] {\n"
15578                "  //\n"
15579                "});\n");
15580   verifyFormat("function([this, that] {\n"
15581                "  //\n"
15582                "});\n");
15583   // FIXME: this format is not ideal and we should consider forcing the first
15584   // arg onto its own line.
15585   verifyFormat("function(a, b, c, //\n"
15586                "         d, [this, that] {\n"
15587                "           //\n"
15588                "         });\n");
15589 
15590   // Multiple lambdas are treated correctly even when there is a short arg0.
15591   verifyFormat("SomeFunction(\n"
15592                "    1,\n"
15593                "    [this] {\n"
15594                "      //\n"
15595                "    },\n"
15596                "    [this] {\n"
15597                "      //\n"
15598                "    },\n"
15599                "    1);\n");
15600 
15601   // More complex introducers.
15602   verifyFormat("return [i, args...] {};");
15603 
15604   // Not lambdas.
15605   verifyFormat("constexpr char hello[]{\"hello\"};");
15606   verifyFormat("double &operator[](int i) { return 0; }\n"
15607                "int i;");
15608   verifyFormat("std::unique_ptr<int[]> foo() {}");
15609   verifyFormat("int i = a[a][a]->f();");
15610   verifyFormat("int i = (*b)[a]->f();");
15611 
15612   // Other corner cases.
15613   verifyFormat("void f() {\n"
15614                "  bar([]() {} // Did not respect SpacesBeforeTrailingComments\n"
15615                "  );\n"
15616                "}");
15617 
15618   // Lambdas created through weird macros.
15619   verifyFormat("void f() {\n"
15620                "  MACRO((const AA &a) { return 1; });\n"
15621                "  MACRO((AA &a) { return 1; });\n"
15622                "}");
15623 
15624   verifyFormat("if (blah_blah(whatever, whatever, [] {\n"
15625                "      doo_dah();\n"
15626                "      doo_dah();\n"
15627                "    })) {\n"
15628                "}");
15629   verifyFormat("if constexpr (blah_blah(whatever, whatever, [] {\n"
15630                "                doo_dah();\n"
15631                "                doo_dah();\n"
15632                "              })) {\n"
15633                "}");
15634   verifyFormat("if CONSTEXPR (blah_blah(whatever, whatever, [] {\n"
15635                "                doo_dah();\n"
15636                "                doo_dah();\n"
15637                "              })) {\n"
15638                "}");
15639   verifyFormat("auto lambda = []() {\n"
15640                "  int a = 2\n"
15641                "#if A\n"
15642                "          + 2\n"
15643                "#endif\n"
15644                "      ;\n"
15645                "};");
15646 
15647   // Lambdas with complex multiline introducers.
15648   verifyFormat(
15649       "aaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
15650       "    [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]()\n"
15651       "        -> ::std::unordered_set<\n"
15652       "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n"
15653       "      //\n"
15654       "    });");
15655 
15656   FormatStyle DoNotMerge = getLLVMStyle();
15657   DoNotMerge.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
15658   verifyFormat("auto c = []() {\n"
15659                "  return b;\n"
15660                "};",
15661                "auto c = []() { return b; };", DoNotMerge);
15662   verifyFormat("auto c = []() {\n"
15663                "};",
15664                " auto c = []() {};", DoNotMerge);
15665 
15666   FormatStyle MergeEmptyOnly = getLLVMStyle();
15667   MergeEmptyOnly.AllowShortLambdasOnASingleLine = FormatStyle::SLS_Empty;
15668   verifyFormat("auto c = []() {\n"
15669                "  return b;\n"
15670                "};",
15671                "auto c = []() {\n"
15672                "  return b;\n"
15673                " };",
15674                MergeEmptyOnly);
15675   verifyFormat("auto c = []() {};",
15676                "auto c = []() {\n"
15677                "};",
15678                MergeEmptyOnly);
15679 
15680   FormatStyle MergeInline = getLLVMStyle();
15681   MergeInline.AllowShortLambdasOnASingleLine = FormatStyle::SLS_Inline;
15682   verifyFormat("auto c = []() {\n"
15683                "  return b;\n"
15684                "};",
15685                "auto c = []() { return b; };", MergeInline);
15686   verifyFormat("function([]() { return b; })", "function([]() { return b; })",
15687                MergeInline);
15688   verifyFormat("function([]() { return b; }, a)",
15689                "function([]() { return b; }, a)", MergeInline);
15690   verifyFormat("function(a, []() { return b; })",
15691                "function(a, []() { return b; })", MergeInline);
15692 
15693   // Check option "BraceWrapping.BeforeLambdaBody" and different state of
15694   // AllowShortLambdasOnASingleLine
15695   FormatStyle LLVMWithBeforeLambdaBody = getLLVMStyle();
15696   LLVMWithBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
15697   LLVMWithBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
15698   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
15699       FormatStyle::ShortLambdaStyle::SLS_None;
15700   verifyFormat("FctWithOneNestedLambdaInline_SLS_None(\n"
15701                "    []()\n"
15702                "    {\n"
15703                "      return 17;\n"
15704                "    });",
15705                LLVMWithBeforeLambdaBody);
15706   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_None(\n"
15707                "    []()\n"
15708                "    {\n"
15709                "    });",
15710                LLVMWithBeforeLambdaBody);
15711   verifyFormat("auto fct_SLS_None = []()\n"
15712                "{\n"
15713                "  return 17;\n"
15714                "};",
15715                LLVMWithBeforeLambdaBody);
15716   verifyFormat("TwoNestedLambdas_SLS_None(\n"
15717                "    []()\n"
15718                "    {\n"
15719                "      return Call(\n"
15720                "          []()\n"
15721                "          {\n"
15722                "            return 17;\n"
15723                "          });\n"
15724                "    });",
15725                LLVMWithBeforeLambdaBody);
15726   verifyFormat("void Fct()\n"
15727                "{\n"
15728                "  return {[]()\n"
15729                "          {\n"
15730                "            return 17;\n"
15731                "          }};\n"
15732                "}",
15733                LLVMWithBeforeLambdaBody);
15734 
15735   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
15736       FormatStyle::ShortLambdaStyle::SLS_Empty;
15737   verifyFormat("FctWithOneNestedLambdaInline_SLS_Empty(\n"
15738                "    []()\n"
15739                "    {\n"
15740                "      return 17;\n"
15741                "    });",
15742                LLVMWithBeforeLambdaBody);
15743   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_Empty([]() {});",
15744                LLVMWithBeforeLambdaBody);
15745   verifyFormat("FctWithOneNestedLambdaEmptyInsideAVeryVeryVeryVeryVeryVeryVeryL"
15746                "ongFunctionName_SLS_Empty(\n"
15747                "    []() {});",
15748                LLVMWithBeforeLambdaBody);
15749   verifyFormat("FctWithMultipleParams_SLS_Empty(A, B,\n"
15750                "                                []()\n"
15751                "                                {\n"
15752                "                                  return 17;\n"
15753                "                                });",
15754                LLVMWithBeforeLambdaBody);
15755   verifyFormat("auto fct_SLS_Empty = []()\n"
15756                "{\n"
15757                "  return 17;\n"
15758                "};",
15759                LLVMWithBeforeLambdaBody);
15760   verifyFormat("TwoNestedLambdas_SLS_Empty(\n"
15761                "    []()\n"
15762                "    {\n"
15763                "      return Call([]() {});\n"
15764                "    });",
15765                LLVMWithBeforeLambdaBody);
15766   verifyFormat("TwoNestedLambdas_SLS_Empty(A,\n"
15767                "                           []()\n"
15768                "                           {\n"
15769                "                             return Call([]() {});\n"
15770                "                           });",
15771                LLVMWithBeforeLambdaBody);
15772   verifyFormat(
15773       "FctWithLongLineInLambda_SLS_Empty(\n"
15774       "    []()\n"
15775       "    {\n"
15776       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
15777       "                               AndShouldNotBeConsiderAsInline,\n"
15778       "                               LambdaBodyMustBeBreak);\n"
15779       "    });",
15780       LLVMWithBeforeLambdaBody);
15781 
15782   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
15783       FormatStyle::ShortLambdaStyle::SLS_Inline;
15784   verifyFormat("FctWithOneNestedLambdaInline_SLS_Inline([]() { return 17; });",
15785                LLVMWithBeforeLambdaBody);
15786   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_Inline([]() {});",
15787                LLVMWithBeforeLambdaBody);
15788   verifyFormat("auto fct_SLS_Inline = []()\n"
15789                "{\n"
15790                "  return 17;\n"
15791                "};",
15792                LLVMWithBeforeLambdaBody);
15793   verifyFormat("TwoNestedLambdas_SLS_Inline([]() { return Call([]() { return "
15794                "17; }); });",
15795                LLVMWithBeforeLambdaBody);
15796   verifyFormat(
15797       "FctWithLongLineInLambda_SLS_Inline(\n"
15798       "    []()\n"
15799       "    {\n"
15800       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
15801       "                               AndShouldNotBeConsiderAsInline,\n"
15802       "                               LambdaBodyMustBeBreak);\n"
15803       "    });",
15804       LLVMWithBeforeLambdaBody);
15805   verifyFormat("FctWithMultipleParams_SLS_Inline("
15806                "VeryLongParameterThatShouldAskToBeOnMultiLine,\n"
15807                "                                 []() { return 17; });",
15808                LLVMWithBeforeLambdaBody);
15809   verifyFormat(
15810       "FctWithMultipleParams_SLS_Inline(FirstParam, []() { return 17; });",
15811       LLVMWithBeforeLambdaBody);
15812 
15813   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
15814       FormatStyle::ShortLambdaStyle::SLS_All;
15815   verifyFormat("FctWithOneNestedLambdaInline_SLS_All([]() { return 17; });",
15816                LLVMWithBeforeLambdaBody);
15817   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_All([]() {});",
15818                LLVMWithBeforeLambdaBody);
15819   verifyFormat("auto fct_SLS_All = []() { return 17; };",
15820                LLVMWithBeforeLambdaBody);
15821   verifyFormat("FctWithOneParam_SLS_All(\n"
15822                "    []()\n"
15823                "    {\n"
15824                "      // A cool function...\n"
15825                "      return 43;\n"
15826                "    });",
15827                LLVMWithBeforeLambdaBody);
15828   verifyFormat("FctWithMultipleParams_SLS_All("
15829                "VeryLongParameterThatShouldAskToBeOnMultiLine,\n"
15830                "                              []() { return 17; });",
15831                LLVMWithBeforeLambdaBody);
15832   verifyFormat("FctWithMultipleParams_SLS_All(A, []() { return 17; });",
15833                LLVMWithBeforeLambdaBody);
15834   verifyFormat("FctWithMultipleParams_SLS_All(A, B, []() { return 17; });",
15835                LLVMWithBeforeLambdaBody);
15836   verifyFormat(
15837       "FctWithLongLineInLambda_SLS_All(\n"
15838       "    []()\n"
15839       "    {\n"
15840       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
15841       "                               AndShouldNotBeConsiderAsInline,\n"
15842       "                               LambdaBodyMustBeBreak);\n"
15843       "    });",
15844       LLVMWithBeforeLambdaBody);
15845   verifyFormat(
15846       "auto fct_SLS_All = []()\n"
15847       "{\n"
15848       "  return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
15849       "                           AndShouldNotBeConsiderAsInline,\n"
15850       "                           LambdaBodyMustBeBreak);\n"
15851       "};",
15852       LLVMWithBeforeLambdaBody);
15853   LLVMWithBeforeLambdaBody.BinPackParameters = false;
15854   verifyFormat("FctAllOnSameLine_SLS_All([]() { return S; }, Fst, Second);",
15855                LLVMWithBeforeLambdaBody);
15856   verifyFormat(
15857       "FctWithLongLineInLambda_SLS_All([]() { return SomeValueNotSoLong; },\n"
15858       "                                FirstParam,\n"
15859       "                                SecondParam,\n"
15860       "                                ThirdParam,\n"
15861       "                                FourthParam);",
15862       LLVMWithBeforeLambdaBody);
15863   verifyFormat("FctWithLongLineInLambda_SLS_All(\n"
15864                "    []() { return "
15865                "SomeValueVeryVeryVeryVeryVeryVeryVeryVeryVeryLong; },\n"
15866                "    FirstParam,\n"
15867                "    SecondParam,\n"
15868                "    ThirdParam,\n"
15869                "    FourthParam);",
15870                LLVMWithBeforeLambdaBody);
15871   verifyFormat(
15872       "FctWithLongLineInLambda_SLS_All(FirstParam,\n"
15873       "                                SecondParam,\n"
15874       "                                ThirdParam,\n"
15875       "                                FourthParam,\n"
15876       "                                []() { return SomeValueNotSoLong; });",
15877       LLVMWithBeforeLambdaBody);
15878   verifyFormat("FctWithLongLineInLambda_SLS_All(\n"
15879                "    []()\n"
15880                "    {\n"
15881                "      return "
15882                "HereAVeryLongLineThatWillBeFormattedOnMultipleLineAndShouldNotB"
15883                "eConsiderAsInline;\n"
15884                "    });",
15885                LLVMWithBeforeLambdaBody);
15886   verifyFormat(
15887       "FctWithLongLineInLambda_SLS_All(\n"
15888       "    []()\n"
15889       "    {\n"
15890       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
15891       "                               AndShouldNotBeConsiderAsInline,\n"
15892       "                               LambdaBodyMustBeBreak);\n"
15893       "    });",
15894       LLVMWithBeforeLambdaBody);
15895   verifyFormat("FctWithTwoParams_SLS_All(\n"
15896                "    []()\n"
15897                "    {\n"
15898                "      // A cool function...\n"
15899                "      return 43;\n"
15900                "    },\n"
15901                "    87);",
15902                LLVMWithBeforeLambdaBody);
15903   verifyFormat("FctWithTwoParams_SLS_All([]() { return 43; }, 87);",
15904                LLVMWithBeforeLambdaBody);
15905   verifyFormat("FctWithOneNestedLambdas_SLS_All([]() { return 17; });",
15906                LLVMWithBeforeLambdaBody);
15907   verifyFormat(
15908       "TwoNestedLambdas_SLS_All([]() { return Call([]() { return 17; }); });",
15909       LLVMWithBeforeLambdaBody);
15910   verifyFormat("TwoNestedLambdas_SLS_All([]() { return Call([]() { return 17; "
15911                "}); }, x);",
15912                LLVMWithBeforeLambdaBody);
15913   verifyFormat("TwoNestedLambdas_SLS_All(\n"
15914                "    []()\n"
15915                "    {\n"
15916                "      // A cool function...\n"
15917                "      return Call([]() { return 17; });\n"
15918                "    });",
15919                LLVMWithBeforeLambdaBody);
15920   verifyFormat("TwoNestedLambdas_SLS_All(\n"
15921                "    []()\n"
15922                "    {\n"
15923                "      return Call(\n"
15924                "          []()\n"
15925                "          {\n"
15926                "            // A cool function...\n"
15927                "            return 17;\n"
15928                "          });\n"
15929                "    });",
15930                LLVMWithBeforeLambdaBody);
15931 }
15932 
15933 TEST_F(FormatTest, LambdaWithLineComments) {
15934   FormatStyle LLVMWithBeforeLambdaBody = getLLVMStyle();
15935   LLVMWithBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
15936   LLVMWithBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
15937   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
15938       FormatStyle::ShortLambdaStyle::SLS_All;
15939 
15940   verifyFormat("auto k = []() { return; }", LLVMWithBeforeLambdaBody);
15941   verifyFormat("auto k = []() // comment\n"
15942                "{ return; }",
15943                LLVMWithBeforeLambdaBody);
15944   verifyFormat("auto k = []() /* comment */ { return; }",
15945                LLVMWithBeforeLambdaBody);
15946   verifyFormat("auto k = []() /* comment */ /* comment */ { return; }",
15947                LLVMWithBeforeLambdaBody);
15948   verifyFormat("auto k = []() // X\n"
15949                "{ return; }",
15950                LLVMWithBeforeLambdaBody);
15951   verifyFormat(
15952       "auto k = []() // XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"
15953       "{ return; }",
15954       LLVMWithBeforeLambdaBody);
15955 }
15956 
15957 TEST_F(FormatTest, EmptyLinesInLambdas) {
15958   verifyFormat("auto lambda = []() {\n"
15959                "  x(); //\n"
15960                "};",
15961                "auto lambda = []() {\n"
15962                "\n"
15963                "  x(); //\n"
15964                "\n"
15965                "};");
15966 }
15967 
15968 TEST_F(FormatTest, FormatsBlocks) {
15969   FormatStyle ShortBlocks = getLLVMStyle();
15970   ShortBlocks.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
15971   verifyFormat("int (^Block)(int, int);", ShortBlocks);
15972   verifyFormat("int (^Block1)(int, int) = ^(int i, int j)", ShortBlocks);
15973   verifyFormat("void (^block)(int) = ^(id test) { int i; };", ShortBlocks);
15974   verifyFormat("void (^block)(int) = ^(int test) { int i; };", ShortBlocks);
15975   verifyFormat("void (^block)(int) = ^id(int test) { int i; };", ShortBlocks);
15976   verifyFormat("void (^block)(int) = ^int(int test) { int i; };", ShortBlocks);
15977 
15978   verifyFormat("foo(^{ bar(); });", ShortBlocks);
15979   verifyFormat("foo(a, ^{ bar(); });", ShortBlocks);
15980   verifyFormat("{ void (^block)(Object *x); }", ShortBlocks);
15981 
15982   verifyFormat("[operation setCompletionBlock:^{\n"
15983                "  [self onOperationDone];\n"
15984                "}];");
15985   verifyFormat("int i = {[operation setCompletionBlock:^{\n"
15986                "  [self onOperationDone];\n"
15987                "}]};");
15988   verifyFormat("[operation setCompletionBlock:^(int *i) {\n"
15989                "  f();\n"
15990                "}];");
15991   verifyFormat("int a = [operation block:^int(int *i) {\n"
15992                "  return 1;\n"
15993                "}];");
15994   verifyFormat("[myObject doSomethingWith:arg1\n"
15995                "                      aaa:^int(int *a) {\n"
15996                "                        return 1;\n"
15997                "                      }\n"
15998                "                      bbb:f(a * bbbbbbbb)];");
15999 
16000   verifyFormat("[operation setCompletionBlock:^{\n"
16001                "  [self.delegate newDataAvailable];\n"
16002                "}];",
16003                getLLVMStyleWithColumns(60));
16004   verifyFormat("dispatch_async(_fileIOQueue, ^{\n"
16005                "  NSString *path = [self sessionFilePath];\n"
16006                "  if (path) {\n"
16007                "    // ...\n"
16008                "  }\n"
16009                "});");
16010   verifyFormat("[[SessionService sharedService]\n"
16011                "    loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
16012                "      if (window) {\n"
16013                "        [self windowDidLoad:window];\n"
16014                "      } else {\n"
16015                "        [self errorLoadingWindow];\n"
16016                "      }\n"
16017                "    }];");
16018   verifyFormat("void (^largeBlock)(void) = ^{\n"
16019                "  // ...\n"
16020                "};\n",
16021                getLLVMStyleWithColumns(40));
16022   verifyFormat("[[SessionService sharedService]\n"
16023                "    loadWindowWithCompletionBlock: //\n"
16024                "        ^(SessionWindow *window) {\n"
16025                "          if (window) {\n"
16026                "            [self windowDidLoad:window];\n"
16027                "          } else {\n"
16028                "            [self errorLoadingWindow];\n"
16029                "          }\n"
16030                "        }];",
16031                getLLVMStyleWithColumns(60));
16032   verifyFormat("[myObject doSomethingWith:arg1\n"
16033                "    firstBlock:^(Foo *a) {\n"
16034                "      // ...\n"
16035                "      int i;\n"
16036                "    }\n"
16037                "    secondBlock:^(Bar *b) {\n"
16038                "      // ...\n"
16039                "      int i;\n"
16040                "    }\n"
16041                "    thirdBlock:^Foo(Bar *b) {\n"
16042                "      // ...\n"
16043                "      int i;\n"
16044                "    }];");
16045   verifyFormat("[myObject doSomethingWith:arg1\n"
16046                "               firstBlock:-1\n"
16047                "              secondBlock:^(Bar *b) {\n"
16048                "                // ...\n"
16049                "                int i;\n"
16050                "              }];");
16051 
16052   verifyFormat("f(^{\n"
16053                "  @autoreleasepool {\n"
16054                "    if (a) {\n"
16055                "      g();\n"
16056                "    }\n"
16057                "  }\n"
16058                "});");
16059   verifyFormat("Block b = ^int *(A *a, B *b) {}");
16060   verifyFormat("BOOL (^aaa)(void) = ^BOOL {\n"
16061                "};");
16062 
16063   FormatStyle FourIndent = getLLVMStyle();
16064   FourIndent.ObjCBlockIndentWidth = 4;
16065   verifyFormat("[operation setCompletionBlock:^{\n"
16066                "    [self onOperationDone];\n"
16067                "}];",
16068                FourIndent);
16069 }
16070 
16071 TEST_F(FormatTest, FormatsBlocksWithZeroColumnWidth) {
16072   FormatStyle ZeroColumn = getLLVMStyle();
16073   ZeroColumn.ColumnLimit = 0;
16074 
16075   verifyFormat("[[SessionService sharedService] "
16076                "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
16077                "  if (window) {\n"
16078                "    [self windowDidLoad:window];\n"
16079                "  } else {\n"
16080                "    [self errorLoadingWindow];\n"
16081                "  }\n"
16082                "}];",
16083                ZeroColumn);
16084   EXPECT_EQ("[[SessionService sharedService]\n"
16085             "    loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
16086             "      if (window) {\n"
16087             "        [self windowDidLoad:window];\n"
16088             "      } else {\n"
16089             "        [self errorLoadingWindow];\n"
16090             "      }\n"
16091             "    }];",
16092             format("[[SessionService sharedService]\n"
16093                    "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
16094                    "                if (window) {\n"
16095                    "    [self windowDidLoad:window];\n"
16096                    "  } else {\n"
16097                    "    [self errorLoadingWindow];\n"
16098                    "  }\n"
16099                    "}];",
16100                    ZeroColumn));
16101   verifyFormat("[myObject doSomethingWith:arg1\n"
16102                "    firstBlock:^(Foo *a) {\n"
16103                "      // ...\n"
16104                "      int i;\n"
16105                "    }\n"
16106                "    secondBlock:^(Bar *b) {\n"
16107                "      // ...\n"
16108                "      int i;\n"
16109                "    }\n"
16110                "    thirdBlock:^Foo(Bar *b) {\n"
16111                "      // ...\n"
16112                "      int i;\n"
16113                "    }];",
16114                ZeroColumn);
16115   verifyFormat("f(^{\n"
16116                "  @autoreleasepool {\n"
16117                "    if (a) {\n"
16118                "      g();\n"
16119                "    }\n"
16120                "  }\n"
16121                "});",
16122                ZeroColumn);
16123   verifyFormat("void (^largeBlock)(void) = ^{\n"
16124                "  // ...\n"
16125                "};",
16126                ZeroColumn);
16127 
16128   ZeroColumn.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
16129   EXPECT_EQ("void (^largeBlock)(void) = ^{ int i; };",
16130             format("void   (^largeBlock)(void) = ^{ int   i; };", ZeroColumn));
16131   ZeroColumn.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Never;
16132   EXPECT_EQ("void (^largeBlock)(void) = ^{\n"
16133             "  int i;\n"
16134             "};",
16135             format("void   (^largeBlock)(void) = ^{ int   i; };", ZeroColumn));
16136 }
16137 
16138 TEST_F(FormatTest, SupportsCRLF) {
16139   EXPECT_EQ("int a;\r\n"
16140             "int b;\r\n"
16141             "int c;\r\n",
16142             format("int a;\r\n"
16143                    "  int b;\r\n"
16144                    "    int c;\r\n",
16145                    getLLVMStyle()));
16146   EXPECT_EQ("int a;\r\n"
16147             "int b;\r\n"
16148             "int c;\r\n",
16149             format("int a;\r\n"
16150                    "  int b;\n"
16151                    "    int c;\r\n",
16152                    getLLVMStyle()));
16153   EXPECT_EQ("int a;\n"
16154             "int b;\n"
16155             "int c;\n",
16156             format("int a;\r\n"
16157                    "  int b;\n"
16158                    "    int c;\n",
16159                    getLLVMStyle()));
16160   EXPECT_EQ("\"aaaaaaa \"\r\n"
16161             "\"bbbbbbb\";\r\n",
16162             format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10)));
16163   EXPECT_EQ("#define A \\\r\n"
16164             "  b;      \\\r\n"
16165             "  c;      \\\r\n"
16166             "  d;\r\n",
16167             format("#define A \\\r\n"
16168                    "  b; \\\r\n"
16169                    "  c; d; \r\n",
16170                    getGoogleStyle()));
16171 
16172   EXPECT_EQ("/*\r\n"
16173             "multi line block comments\r\n"
16174             "should not introduce\r\n"
16175             "an extra carriage return\r\n"
16176             "*/\r\n",
16177             format("/*\r\n"
16178                    "multi line block comments\r\n"
16179                    "should not introduce\r\n"
16180                    "an extra carriage return\r\n"
16181                    "*/\r\n"));
16182   EXPECT_EQ("/*\r\n"
16183             "\r\n"
16184             "*/",
16185             format("/*\r\n"
16186                    "    \r\r\r\n"
16187                    "*/"));
16188 
16189   FormatStyle style = getLLVMStyle();
16190 
16191   style.DeriveLineEnding = true;
16192   style.UseCRLF = false;
16193   EXPECT_EQ("union FooBarBazQux {\n"
16194             "  int foo;\n"
16195             "  int bar;\n"
16196             "  int baz;\n"
16197             "};",
16198             format("union FooBarBazQux {\r\n"
16199                    "  int foo;\n"
16200                    "  int bar;\r\n"
16201                    "  int baz;\n"
16202                    "};",
16203                    style));
16204   style.UseCRLF = true;
16205   EXPECT_EQ("union FooBarBazQux {\r\n"
16206             "  int foo;\r\n"
16207             "  int bar;\r\n"
16208             "  int baz;\r\n"
16209             "};",
16210             format("union FooBarBazQux {\r\n"
16211                    "  int foo;\n"
16212                    "  int bar;\r\n"
16213                    "  int baz;\n"
16214                    "};",
16215                    style));
16216 
16217   style.DeriveLineEnding = false;
16218   style.UseCRLF = false;
16219   EXPECT_EQ("union FooBarBazQux {\n"
16220             "  int foo;\n"
16221             "  int bar;\n"
16222             "  int baz;\n"
16223             "  int qux;\n"
16224             "};",
16225             format("union FooBarBazQux {\r\n"
16226                    "  int foo;\n"
16227                    "  int bar;\r\n"
16228                    "  int baz;\n"
16229                    "  int qux;\r\n"
16230                    "};",
16231                    style));
16232   style.UseCRLF = true;
16233   EXPECT_EQ("union FooBarBazQux {\r\n"
16234             "  int foo;\r\n"
16235             "  int bar;\r\n"
16236             "  int baz;\r\n"
16237             "  int qux;\r\n"
16238             "};",
16239             format("union FooBarBazQux {\r\n"
16240                    "  int foo;\n"
16241                    "  int bar;\r\n"
16242                    "  int baz;\n"
16243                    "  int qux;\n"
16244                    "};",
16245                    style));
16246 
16247   style.DeriveLineEnding = true;
16248   style.UseCRLF = false;
16249   EXPECT_EQ("union FooBarBazQux {\r\n"
16250             "  int foo;\r\n"
16251             "  int bar;\r\n"
16252             "  int baz;\r\n"
16253             "  int qux;\r\n"
16254             "};",
16255             format("union FooBarBazQux {\r\n"
16256                    "  int foo;\n"
16257                    "  int bar;\r\n"
16258                    "  int baz;\n"
16259                    "  int qux;\r\n"
16260                    "};",
16261                    style));
16262   style.UseCRLF = true;
16263   EXPECT_EQ("union FooBarBazQux {\n"
16264             "  int foo;\n"
16265             "  int bar;\n"
16266             "  int baz;\n"
16267             "  int qux;\n"
16268             "};",
16269             format("union FooBarBazQux {\r\n"
16270                    "  int foo;\n"
16271                    "  int bar;\r\n"
16272                    "  int baz;\n"
16273                    "  int qux;\n"
16274                    "};",
16275                    style));
16276 }
16277 
16278 TEST_F(FormatTest, MunchSemicolonAfterBlocks) {
16279   verifyFormat("MY_CLASS(C) {\n"
16280                "  int i;\n"
16281                "  int j;\n"
16282                "};");
16283 }
16284 
16285 TEST_F(FormatTest, ConfigurableContinuationIndentWidth) {
16286   FormatStyle TwoIndent = getLLVMStyleWithColumns(15);
16287   TwoIndent.ContinuationIndentWidth = 2;
16288 
16289   EXPECT_EQ("int i =\n"
16290             "  longFunction(\n"
16291             "    arg);",
16292             format("int i = longFunction(arg);", TwoIndent));
16293 
16294   FormatStyle SixIndent = getLLVMStyleWithColumns(20);
16295   SixIndent.ContinuationIndentWidth = 6;
16296 
16297   EXPECT_EQ("int i =\n"
16298             "      longFunction(\n"
16299             "            arg);",
16300             format("int i = longFunction(arg);", SixIndent));
16301 }
16302 
16303 TEST_F(FormatTest, WrappedClosingParenthesisIndent) {
16304   FormatStyle Style = getLLVMStyle();
16305   verifyFormat("int Foo::getter(\n"
16306                "    //\n"
16307                ") const {\n"
16308                "  return foo;\n"
16309                "}",
16310                Style);
16311   verifyFormat("void Foo::setter(\n"
16312                "    //\n"
16313                ") {\n"
16314                "  foo = 1;\n"
16315                "}",
16316                Style);
16317 }
16318 
16319 TEST_F(FormatTest, SpacesInAngles) {
16320   FormatStyle Spaces = getLLVMStyle();
16321   Spaces.SpacesInAngles = true;
16322 
16323   verifyFormat("static_cast< int >(arg);", Spaces);
16324   verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces);
16325   verifyFormat("f< int, float >();", Spaces);
16326   verifyFormat("template <> g() {}", Spaces);
16327   verifyFormat("template < std::vector< int > > f() {}", Spaces);
16328   verifyFormat("std::function< void(int, int) > fct;", Spaces);
16329   verifyFormat("void inFunction() { std::function< void(int, int) > fct; }",
16330                Spaces);
16331 
16332   Spaces.Standard = FormatStyle::LS_Cpp03;
16333   Spaces.SpacesInAngles = true;
16334   verifyFormat("A< A< int > >();", Spaces);
16335 
16336   Spaces.SpacesInAngles = false;
16337   verifyFormat("A<A<int> >();", Spaces);
16338 
16339   Spaces.Standard = FormatStyle::LS_Cpp11;
16340   Spaces.SpacesInAngles = true;
16341   verifyFormat("A< A< int > >();", Spaces);
16342 
16343   Spaces.SpacesInAngles = false;
16344   verifyFormat("A<A<int>>();", Spaces);
16345 }
16346 
16347 TEST_F(FormatTest, SpaceAfterTemplateKeyword) {
16348   FormatStyle Style = getLLVMStyle();
16349   Style.SpaceAfterTemplateKeyword = false;
16350   verifyFormat("template<int> void foo();", Style);
16351 }
16352 
16353 TEST_F(FormatTest, TripleAngleBrackets) {
16354   verifyFormat("f<<<1, 1>>>();");
16355   verifyFormat("f<<<1, 1, 1, s>>>();");
16356   verifyFormat("f<<<a, b, c, d>>>();");
16357   EXPECT_EQ("f<<<1, 1>>>();", format("f <<< 1, 1 >>> ();"));
16358   verifyFormat("f<param><<<1, 1>>>();");
16359   verifyFormat("f<1><<<1, 1>>>();");
16360   EXPECT_EQ("f<param><<<1, 1>>>();", format("f< param > <<< 1, 1 >>> ();"));
16361   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
16362                "aaaaaaaaaaa<<<\n    1, 1>>>();");
16363   verifyFormat("aaaaaaaaaaaaaaa<aaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaaaaa>\n"
16364                "    <<<aaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaaaaaaaaa>>>();");
16365 }
16366 
16367 TEST_F(FormatTest, MergeLessLessAtEnd) {
16368   verifyFormat("<<");
16369   EXPECT_EQ("< < <", format("\\\n<<<"));
16370   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
16371                "aaallvm::outs() <<");
16372   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
16373                "aaaallvm::outs()\n    <<");
16374 }
16375 
16376 TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) {
16377   std::string code = "#if A\n"
16378                      "#if B\n"
16379                      "a.\n"
16380                      "#endif\n"
16381                      "    a = 1;\n"
16382                      "#else\n"
16383                      "#endif\n"
16384                      "#if C\n"
16385                      "#else\n"
16386                      "#endif\n";
16387   EXPECT_EQ(code, format(code));
16388 }
16389 
16390 TEST_F(FormatTest, HandleConflictMarkers) {
16391   // Git/SVN conflict markers.
16392   EXPECT_EQ("int a;\n"
16393             "void f() {\n"
16394             "  callme(some(parameter1,\n"
16395             "<<<<<<< text by the vcs\n"
16396             "              parameter2),\n"
16397             "||||||| text by the vcs\n"
16398             "              parameter2),\n"
16399             "         parameter3,\n"
16400             "======= text by the vcs\n"
16401             "              parameter2, parameter3),\n"
16402             ">>>>>>> text by the vcs\n"
16403             "         otherparameter);\n",
16404             format("int a;\n"
16405                    "void f() {\n"
16406                    "  callme(some(parameter1,\n"
16407                    "<<<<<<< text by the vcs\n"
16408                    "  parameter2),\n"
16409                    "||||||| text by the vcs\n"
16410                    "  parameter2),\n"
16411                    "  parameter3,\n"
16412                    "======= text by the vcs\n"
16413                    "  parameter2,\n"
16414                    "  parameter3),\n"
16415                    ">>>>>>> text by the vcs\n"
16416                    "  otherparameter);\n"));
16417 
16418   // Perforce markers.
16419   EXPECT_EQ("void f() {\n"
16420             "  function(\n"
16421             ">>>> text by the vcs\n"
16422             "      parameter,\n"
16423             "==== text by the vcs\n"
16424             "      parameter,\n"
16425             "==== text by the vcs\n"
16426             "      parameter,\n"
16427             "<<<< text by the vcs\n"
16428             "      parameter);\n",
16429             format("void f() {\n"
16430                    "  function(\n"
16431                    ">>>> text by the vcs\n"
16432                    "  parameter,\n"
16433                    "==== text by the vcs\n"
16434                    "  parameter,\n"
16435                    "==== text by the vcs\n"
16436                    "  parameter,\n"
16437                    "<<<< text by the vcs\n"
16438                    "  parameter);\n"));
16439 
16440   EXPECT_EQ("<<<<<<<\n"
16441             "|||||||\n"
16442             "=======\n"
16443             ">>>>>>>",
16444             format("<<<<<<<\n"
16445                    "|||||||\n"
16446                    "=======\n"
16447                    ">>>>>>>"));
16448 
16449   EXPECT_EQ("<<<<<<<\n"
16450             "|||||||\n"
16451             "int i;\n"
16452             "=======\n"
16453             ">>>>>>>",
16454             format("<<<<<<<\n"
16455                    "|||||||\n"
16456                    "int i;\n"
16457                    "=======\n"
16458                    ">>>>>>>"));
16459 
16460   // FIXME: Handle parsing of macros around conflict markers correctly:
16461   EXPECT_EQ("#define Macro \\\n"
16462             "<<<<<<<\n"
16463             "Something \\\n"
16464             "|||||||\n"
16465             "Else \\\n"
16466             "=======\n"
16467             "Other \\\n"
16468             ">>>>>>>\n"
16469             "    End int i;\n",
16470             format("#define Macro \\\n"
16471                    "<<<<<<<\n"
16472                    "  Something \\\n"
16473                    "|||||||\n"
16474                    "  Else \\\n"
16475                    "=======\n"
16476                    "  Other \\\n"
16477                    ">>>>>>>\n"
16478                    "  End\n"
16479                    "int i;\n"));
16480 }
16481 
16482 TEST_F(FormatTest, DisableRegions) {
16483   EXPECT_EQ("int i;\n"
16484             "// clang-format off\n"
16485             "  int j;\n"
16486             "// clang-format on\n"
16487             "int k;",
16488             format(" int  i;\n"
16489                    "   // clang-format off\n"
16490                    "  int j;\n"
16491                    " // clang-format on\n"
16492                    "   int   k;"));
16493   EXPECT_EQ("int i;\n"
16494             "/* clang-format off */\n"
16495             "  int j;\n"
16496             "/* clang-format on */\n"
16497             "int k;",
16498             format(" int  i;\n"
16499                    "   /* clang-format off */\n"
16500                    "  int j;\n"
16501                    " /* clang-format on */\n"
16502                    "   int   k;"));
16503 
16504   // Don't reflow comments within disabled regions.
16505   EXPECT_EQ("// clang-format off\n"
16506             "// long long long long long long line\n"
16507             "/* clang-format on */\n"
16508             "/* long long long\n"
16509             " * long long long\n"
16510             " * line */\n"
16511             "int i;\n"
16512             "/* clang-format off */\n"
16513             "/* long long long long long long line */\n",
16514             format("// clang-format off\n"
16515                    "// long long long long long long line\n"
16516                    "/* clang-format on */\n"
16517                    "/* long long long long long long line */\n"
16518                    "int i;\n"
16519                    "/* clang-format off */\n"
16520                    "/* long long long long long long line */\n",
16521                    getLLVMStyleWithColumns(20)));
16522 }
16523 
16524 TEST_F(FormatTest, DoNotCrashOnInvalidInput) {
16525   format("? ) =");
16526   verifyNoCrash("#define a\\\n /**/}");
16527 }
16528 
16529 TEST_F(FormatTest, FormatsTableGenCode) {
16530   FormatStyle Style = getLLVMStyle();
16531   Style.Language = FormatStyle::LK_TableGen;
16532   verifyFormat("include \"a.td\"\ninclude \"b.td\"", Style);
16533 }
16534 
16535 TEST_F(FormatTest, ArrayOfTemplates) {
16536   EXPECT_EQ("auto a = new unique_ptr<int>[10];",
16537             format("auto a = new unique_ptr<int > [ 10];"));
16538 
16539   FormatStyle Spaces = getLLVMStyle();
16540   Spaces.SpacesInSquareBrackets = true;
16541   EXPECT_EQ("auto a = new unique_ptr<int>[ 10 ];",
16542             format("auto a = new unique_ptr<int > [10];", Spaces));
16543 }
16544 
16545 TEST_F(FormatTest, ArrayAsTemplateType) {
16546   EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[10]>;",
16547             format("auto a = unique_ptr < Foo < Bar>[ 10]> ;"));
16548 
16549   FormatStyle Spaces = getLLVMStyle();
16550   Spaces.SpacesInSquareBrackets = true;
16551   EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[ 10 ]>;",
16552             format("auto a = unique_ptr < Foo < Bar>[10]> ;", Spaces));
16553 }
16554 
16555 TEST_F(FormatTest, NoSpaceAfterSuper) { verifyFormat("__super::FooBar();"); }
16556 
16557 TEST(FormatStyle, GetStyleWithEmptyFileName) {
16558   llvm::vfs::InMemoryFileSystem FS;
16559   auto Style1 = getStyle("file", "", "Google", "", &FS);
16560   ASSERT_TRUE((bool)Style1);
16561   ASSERT_EQ(*Style1, getGoogleStyle());
16562 }
16563 
16564 TEST(FormatStyle, GetStyleOfFile) {
16565   llvm::vfs::InMemoryFileSystem FS;
16566   // Test 1: format file in the same directory.
16567   ASSERT_TRUE(
16568       FS.addFile("/a/.clang-format", 0,
16569                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM")));
16570   ASSERT_TRUE(
16571       FS.addFile("/a/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
16572   auto Style1 = getStyle("file", "/a/.clang-format", "Google", "", &FS);
16573   ASSERT_TRUE((bool)Style1);
16574   ASSERT_EQ(*Style1, getLLVMStyle());
16575 
16576   // Test 2.1: fallback to default.
16577   ASSERT_TRUE(
16578       FS.addFile("/b/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
16579   auto Style2 = getStyle("file", "/b/test.cpp", "Mozilla", "", &FS);
16580   ASSERT_TRUE((bool)Style2);
16581   ASSERT_EQ(*Style2, getMozillaStyle());
16582 
16583   // Test 2.2: no format on 'none' fallback style.
16584   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
16585   ASSERT_TRUE((bool)Style2);
16586   ASSERT_EQ(*Style2, getNoStyle());
16587 
16588   // Test 2.3: format if config is found with no based style while fallback is
16589   // 'none'.
16590   ASSERT_TRUE(FS.addFile("/b/.clang-format", 0,
16591                          llvm::MemoryBuffer::getMemBuffer("IndentWidth: 2")));
16592   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
16593   ASSERT_TRUE((bool)Style2);
16594   ASSERT_EQ(*Style2, getLLVMStyle());
16595 
16596   // Test 2.4: format if yaml with no based style, while fallback is 'none'.
16597   Style2 = getStyle("{}", "a.h", "none", "", &FS);
16598   ASSERT_TRUE((bool)Style2);
16599   ASSERT_EQ(*Style2, getLLVMStyle());
16600 
16601   // Test 3: format file in parent directory.
16602   ASSERT_TRUE(
16603       FS.addFile("/c/.clang-format", 0,
16604                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
16605   ASSERT_TRUE(FS.addFile("/c/sub/sub/sub/test.cpp", 0,
16606                          llvm::MemoryBuffer::getMemBuffer("int i;")));
16607   auto Style3 = getStyle("file", "/c/sub/sub/sub/test.cpp", "LLVM", "", &FS);
16608   ASSERT_TRUE((bool)Style3);
16609   ASSERT_EQ(*Style3, getGoogleStyle());
16610 
16611   // Test 4: error on invalid fallback style
16612   auto Style4 = getStyle("file", "a.h", "KungFu", "", &FS);
16613   ASSERT_FALSE((bool)Style4);
16614   llvm::consumeError(Style4.takeError());
16615 
16616   // Test 5: error on invalid yaml on command line
16617   auto Style5 = getStyle("{invalid_key=invalid_value}", "a.h", "LLVM", "", &FS);
16618   ASSERT_FALSE((bool)Style5);
16619   llvm::consumeError(Style5.takeError());
16620 
16621   // Test 6: error on invalid style
16622   auto Style6 = getStyle("KungFu", "a.h", "LLVM", "", &FS);
16623   ASSERT_FALSE((bool)Style6);
16624   llvm::consumeError(Style6.takeError());
16625 
16626   // Test 7: found config file, error on parsing it
16627   ASSERT_TRUE(
16628       FS.addFile("/d/.clang-format", 0,
16629                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM\n"
16630                                                   "InvalidKey: InvalidValue")));
16631   ASSERT_TRUE(
16632       FS.addFile("/d/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
16633   auto Style7a = getStyle("file", "/d/.clang-format", "LLVM", "", &FS);
16634   ASSERT_FALSE((bool)Style7a);
16635   llvm::consumeError(Style7a.takeError());
16636 
16637   auto Style7b = getStyle("file", "/d/.clang-format", "LLVM", "", &FS, true);
16638   ASSERT_TRUE((bool)Style7b);
16639 
16640   // Test 8: inferred per-language defaults apply.
16641   auto StyleTd = getStyle("file", "x.td", "llvm", "", &FS);
16642   ASSERT_TRUE((bool)StyleTd);
16643   ASSERT_EQ(*StyleTd, getLLVMStyle(FormatStyle::LK_TableGen));
16644 }
16645 
16646 TEST_F(ReplacementTest, FormatCodeAfterReplacements) {
16647   // Column limit is 20.
16648   std::string Code = "Type *a =\n"
16649                      "    new Type();\n"
16650                      "g(iiiii, 0, jjjjj,\n"
16651                      "  0, kkkkk, 0, mm);\n"
16652                      "int  bad     = format   ;";
16653   std::string Expected = "auto a = new Type();\n"
16654                          "g(iiiii, nullptr,\n"
16655                          "  jjjjj, nullptr,\n"
16656                          "  kkkkk, nullptr,\n"
16657                          "  mm);\n"
16658                          "int  bad     = format   ;";
16659   FileID ID = Context.createInMemoryFile("format.cpp", Code);
16660   tooling::Replacements Replaces = toReplacements(
16661       {tooling::Replacement(Context.Sources, Context.getLocation(ID, 1, 1), 6,
16662                             "auto "),
16663        tooling::Replacement(Context.Sources, Context.getLocation(ID, 3, 10), 1,
16664                             "nullptr"),
16665        tooling::Replacement(Context.Sources, Context.getLocation(ID, 4, 3), 1,
16666                             "nullptr"),
16667        tooling::Replacement(Context.Sources, Context.getLocation(ID, 4, 13), 1,
16668                             "nullptr")});
16669 
16670   format::FormatStyle Style = format::getLLVMStyle();
16671   Style.ColumnLimit = 20; // Set column limit to 20 to increase readibility.
16672   auto FormattedReplaces = formatReplacements(Code, Replaces, Style);
16673   EXPECT_TRUE(static_cast<bool>(FormattedReplaces))
16674       << llvm::toString(FormattedReplaces.takeError()) << "\n";
16675   auto Result = applyAllReplacements(Code, *FormattedReplaces);
16676   EXPECT_TRUE(static_cast<bool>(Result));
16677   EXPECT_EQ(Expected, *Result);
16678 }
16679 
16680 TEST_F(ReplacementTest, SortIncludesAfterReplacement) {
16681   std::string Code = "#include \"a.h\"\n"
16682                      "#include \"c.h\"\n"
16683                      "\n"
16684                      "int main() {\n"
16685                      "  return 0;\n"
16686                      "}";
16687   std::string Expected = "#include \"a.h\"\n"
16688                          "#include \"b.h\"\n"
16689                          "#include \"c.h\"\n"
16690                          "\n"
16691                          "int main() {\n"
16692                          "  return 0;\n"
16693                          "}";
16694   FileID ID = Context.createInMemoryFile("fix.cpp", Code);
16695   tooling::Replacements Replaces = toReplacements(
16696       {tooling::Replacement(Context.Sources, Context.getLocation(ID, 1, 1), 0,
16697                             "#include \"b.h\"\n")});
16698 
16699   format::FormatStyle Style = format::getLLVMStyle();
16700   Style.SortIncludes = true;
16701   auto FormattedReplaces = formatReplacements(Code, Replaces, Style);
16702   EXPECT_TRUE(static_cast<bool>(FormattedReplaces))
16703       << llvm::toString(FormattedReplaces.takeError()) << "\n";
16704   auto Result = applyAllReplacements(Code, *FormattedReplaces);
16705   EXPECT_TRUE(static_cast<bool>(Result));
16706   EXPECT_EQ(Expected, *Result);
16707 }
16708 
16709 TEST_F(FormatTest, FormatSortsUsingDeclarations) {
16710   EXPECT_EQ("using std::cin;\n"
16711             "using std::cout;",
16712             format("using std::cout;\n"
16713                    "using std::cin;",
16714                    getGoogleStyle()));
16715 }
16716 
16717 TEST_F(FormatTest, UTF8CharacterLiteralCpp03) {
16718   format::FormatStyle Style = format::getLLVMStyle();
16719   Style.Standard = FormatStyle::LS_Cpp03;
16720   // cpp03 recognize this string as identifier u8 and literal character 'a'
16721   EXPECT_EQ("auto c = u8 'a';", format("auto c = u8'a';", Style));
16722 }
16723 
16724 TEST_F(FormatTest, UTF8CharacterLiteralCpp11) {
16725   // u8'a' is a C++17 feature, utf8 literal character, LS_Cpp11 covers
16726   // all modes, including C++11, C++14 and C++17
16727   EXPECT_EQ("auto c = u8'a';", format("auto c = u8'a';"));
16728 }
16729 
16730 TEST_F(FormatTest, DoNotFormatLikelyXml) {
16731   EXPECT_EQ("<!-- ;> -->", format("<!-- ;> -->", getGoogleStyle()));
16732   EXPECT_EQ(" <!-- >; -->", format(" <!-- >; -->", getGoogleStyle()));
16733 }
16734 
16735 TEST_F(FormatTest, StructuredBindings) {
16736   // Structured bindings is a C++17 feature.
16737   // all modes, including C++11, C++14 and C++17
16738   verifyFormat("auto [a, b] = f();");
16739   EXPECT_EQ("auto [a, b] = f();", format("auto[a, b] = f();"));
16740   EXPECT_EQ("const auto [a, b] = f();", format("const   auto[a, b] = f();"));
16741   EXPECT_EQ("auto const [a, b] = f();", format("auto  const[a, b] = f();"));
16742   EXPECT_EQ("auto const volatile [a, b] = f();",
16743             format("auto  const   volatile[a, b] = f();"));
16744   EXPECT_EQ("auto [a, b, c] = f();", format("auto   [  a  ,  b,c   ] = f();"));
16745   EXPECT_EQ("auto &[a, b, c] = f();",
16746             format("auto   &[  a  ,  b,c   ] = f();"));
16747   EXPECT_EQ("auto &&[a, b, c] = f();",
16748             format("auto   &&[  a  ,  b,c   ] = f();"));
16749   EXPECT_EQ("auto const &[a, b] = f();", format("auto  const&[a, b] = f();"));
16750   EXPECT_EQ("auto const volatile &&[a, b] = f();",
16751             format("auto  const  volatile  &&[a, b] = f();"));
16752   EXPECT_EQ("auto const &&[a, b] = f();",
16753             format("auto  const   &&  [a, b] = f();"));
16754   EXPECT_EQ("const auto &[a, b] = f();",
16755             format("const  auto  &  [a, b] = f();"));
16756   EXPECT_EQ("const auto volatile &&[a, b] = f();",
16757             format("const  auto   volatile  &&[a, b] = f();"));
16758   EXPECT_EQ("volatile const auto &&[a, b] = f();",
16759             format("volatile  const  auto   &&[a, b] = f();"));
16760   EXPECT_EQ("const auto &&[a, b] = f();",
16761             format("const  auto  &&  [a, b] = f();"));
16762 
16763   // Make sure we don't mistake structured bindings for lambdas.
16764   FormatStyle PointerMiddle = getLLVMStyle();
16765   PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle;
16766   verifyFormat("auto [a1, b]{A * i};", getGoogleStyle());
16767   verifyFormat("auto [a2, b]{A * i};", getLLVMStyle());
16768   verifyFormat("auto [a3, b]{A * i};", PointerMiddle);
16769   verifyFormat("auto const [a1, b]{A * i};", getGoogleStyle());
16770   verifyFormat("auto const [a2, b]{A * i};", getLLVMStyle());
16771   verifyFormat("auto const [a3, b]{A * i};", PointerMiddle);
16772   verifyFormat("auto const& [a1, b]{A * i};", getGoogleStyle());
16773   verifyFormat("auto const &[a2, b]{A * i};", getLLVMStyle());
16774   verifyFormat("auto const & [a3, b]{A * i};", PointerMiddle);
16775   verifyFormat("auto const&& [a1, b]{A * i};", getGoogleStyle());
16776   verifyFormat("auto const &&[a2, b]{A * i};", getLLVMStyle());
16777   verifyFormat("auto const && [a3, b]{A * i};", PointerMiddle);
16778 
16779   EXPECT_EQ("for (const auto &&[a, b] : some_range) {\n}",
16780             format("for (const auto   &&   [a, b] : some_range) {\n}"));
16781   EXPECT_EQ("for (const auto &[a, b] : some_range) {\n}",
16782             format("for (const auto   &   [a, b] : some_range) {\n}"));
16783   EXPECT_EQ("for (const auto [a, b] : some_range) {\n}",
16784             format("for (const auto[a, b] : some_range) {\n}"));
16785   EXPECT_EQ("auto [x, y](expr);", format("auto[x,y]  (expr);"));
16786   EXPECT_EQ("auto &[x, y](expr);", format("auto  &  [x,y]  (expr);"));
16787   EXPECT_EQ("auto &&[x, y](expr);", format("auto  &&  [x,y]  (expr);"));
16788   EXPECT_EQ("auto const &[x, y](expr);",
16789             format("auto  const  &  [x,y]  (expr);"));
16790   EXPECT_EQ("auto const &&[x, y](expr);",
16791             format("auto  const  &&  [x,y]  (expr);"));
16792   EXPECT_EQ("auto [x, y]{expr};", format("auto[x,y]     {expr};"));
16793   EXPECT_EQ("auto const &[x, y]{expr};",
16794             format("auto  const  &  [x,y]  {expr};"));
16795   EXPECT_EQ("auto const &&[x, y]{expr};",
16796             format("auto  const  &&  [x,y]  {expr};"));
16797 
16798   format::FormatStyle Spaces = format::getLLVMStyle();
16799   Spaces.SpacesInSquareBrackets = true;
16800   verifyFormat("auto [ a, b ] = f();", Spaces);
16801   verifyFormat("auto &&[ a, b ] = f();", Spaces);
16802   verifyFormat("auto &[ a, b ] = f();", Spaces);
16803   verifyFormat("auto const &&[ a, b ] = f();", Spaces);
16804   verifyFormat("auto const &[ a, b ] = f();", Spaces);
16805 }
16806 
16807 TEST_F(FormatTest, FileAndCode) {
16808   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.cc", ""));
16809   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.m", ""));
16810   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.mm", ""));
16811   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", ""));
16812   EXPECT_EQ(FormatStyle::LK_ObjC,
16813             guessLanguage("foo.h", "@interface Foo\n@end\n"));
16814   EXPECT_EQ(
16815       FormatStyle::LK_ObjC,
16816       guessLanguage("foo.h", "#define TRY(x, y) @try { x; } @finally { y; }"));
16817   EXPECT_EQ(FormatStyle::LK_ObjC,
16818             guessLanguage("foo.h", "#define AVAIL(x) @available(x, *))"));
16819   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.h", "@class Foo;"));
16820   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo", ""));
16821   EXPECT_EQ(FormatStyle::LK_ObjC,
16822             guessLanguage("foo", "@interface Foo\n@end\n"));
16823   EXPECT_EQ(FormatStyle::LK_ObjC,
16824             guessLanguage("foo.h", "int DoStuff(CGRect rect);\n"));
16825   EXPECT_EQ(
16826       FormatStyle::LK_ObjC,
16827       guessLanguage("foo.h",
16828                     "#define MY_POINT_MAKE(x, y) CGPointMake((x), (y));\n"));
16829   EXPECT_EQ(
16830       FormatStyle::LK_Cpp,
16831       guessLanguage("foo.h", "#define FOO(...) auto bar = [] __VA_ARGS__;"));
16832 }
16833 
16834 TEST_F(FormatTest, GuessLanguageWithCpp11AttributeSpecifiers) {
16835   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "[[noreturn]];"));
16836   EXPECT_EQ(FormatStyle::LK_ObjC,
16837             guessLanguage("foo.h", "array[[calculator getIndex]];"));
16838   EXPECT_EQ(FormatStyle::LK_Cpp,
16839             guessLanguage("foo.h", "[[noreturn, deprecated(\"so sorry\")]];"));
16840   EXPECT_EQ(
16841       FormatStyle::LK_Cpp,
16842       guessLanguage("foo.h", "[[noreturn, deprecated(\"gone, sorry\")]];"));
16843   EXPECT_EQ(FormatStyle::LK_ObjC,
16844             guessLanguage("foo.h", "[[noreturn foo] bar];"));
16845   EXPECT_EQ(FormatStyle::LK_Cpp,
16846             guessLanguage("foo.h", "[[clang::fallthrough]];"));
16847   EXPECT_EQ(FormatStyle::LK_ObjC,
16848             guessLanguage("foo.h", "[[clang:fallthrough] foo];"));
16849   EXPECT_EQ(FormatStyle::LK_Cpp,
16850             guessLanguage("foo.h", "[[gsl::suppress(\"type\")]];"));
16851   EXPECT_EQ(FormatStyle::LK_Cpp,
16852             guessLanguage("foo.h", "[[using clang: fallthrough]];"));
16853   EXPECT_EQ(FormatStyle::LK_ObjC,
16854             guessLanguage("foo.h", "[[abusing clang:fallthrough] bar];"));
16855   EXPECT_EQ(FormatStyle::LK_Cpp,
16856             guessLanguage("foo.h", "[[using gsl: suppress(\"type\")]];"));
16857   EXPECT_EQ(
16858       FormatStyle::LK_Cpp,
16859       guessLanguage("foo.h", "for (auto &&[endpoint, stream] : streams_)"));
16860   EXPECT_EQ(
16861       FormatStyle::LK_Cpp,
16862       guessLanguage("foo.h",
16863                     "[[clang::callable_when(\"unconsumed\", \"unknown\")]]"));
16864   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "[[foo::bar, ...]]"));
16865 }
16866 
16867 TEST_F(FormatTest, GuessLanguageWithCaret) {
16868   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "FOO(^);"));
16869   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "FOO(^, Bar);"));
16870   EXPECT_EQ(FormatStyle::LK_ObjC,
16871             guessLanguage("foo.h", "int(^)(char, float);"));
16872   EXPECT_EQ(FormatStyle::LK_ObjC,
16873             guessLanguage("foo.h", "int(^foo)(char, float);"));
16874   EXPECT_EQ(FormatStyle::LK_ObjC,
16875             guessLanguage("foo.h", "int(^foo[10])(char, float);"));
16876   EXPECT_EQ(FormatStyle::LK_ObjC,
16877             guessLanguage("foo.h", "int(^foo[kNumEntries])(char, float);"));
16878   EXPECT_EQ(
16879       FormatStyle::LK_ObjC,
16880       guessLanguage("foo.h", "int(^foo[(kNumEntries + 10)])(char, float);"));
16881 }
16882 
16883 TEST_F(FormatTest, GuessLanguageWithPragmas) {
16884   EXPECT_EQ(FormatStyle::LK_Cpp,
16885             guessLanguage("foo.h", "__pragma(warning(disable:))"));
16886   EXPECT_EQ(FormatStyle::LK_Cpp,
16887             guessLanguage("foo.h", "#pragma(warning(disable:))"));
16888   EXPECT_EQ(FormatStyle::LK_Cpp,
16889             guessLanguage("foo.h", "_Pragma(warning(disable:))"));
16890 }
16891 
16892 TEST_F(FormatTest, FormatsInlineAsmSymbolicNames) {
16893   // ASM symbolic names are identifiers that must be surrounded by [] without
16894   // space in between:
16895   // https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html#InputOperands
16896 
16897   // Example from https://bugs.llvm.org/show_bug.cgi?id=45108.
16898   verifyFormat(R"(//
16899 asm volatile("mrs %x[result], FPCR" : [result] "=r"(result));
16900 )");
16901 
16902   // A list of several ASM symbolic names.
16903   verifyFormat(R"(asm("mov %[e], %[d]" : [d] "=rm"(d), [e] "rm"(*e));)");
16904 
16905   // ASM symbolic names in inline ASM with inputs and outputs.
16906   verifyFormat(R"(//
16907 asm("cmoveq %1, %2, %[result]"
16908     : [result] "=r"(result)
16909     : "r"(test), "r"(new), "[result]"(old));
16910 )");
16911 
16912   // ASM symbolic names in inline ASM with no outputs.
16913   verifyFormat(R"(asm("mov %[e], %[d]" : : [d] "=rm"(d), [e] "rm"(*e));)");
16914 }
16915 
16916 TEST_F(FormatTest, GuessedLanguageWithInlineAsmClobbers) {
16917   EXPECT_EQ(FormatStyle::LK_Cpp,
16918             guessLanguage("foo.h", "void f() {\n"
16919                                    "  asm (\"mov %[e], %[d]\"\n"
16920                                    "     : [d] \"=rm\" (d)\n"
16921                                    "       [e] \"rm\" (*e));\n"
16922                                    "}"));
16923   EXPECT_EQ(FormatStyle::LK_Cpp,
16924             guessLanguage("foo.h", "void f() {\n"
16925                                    "  _asm (\"mov %[e], %[d]\"\n"
16926                                    "     : [d] \"=rm\" (d)\n"
16927                                    "       [e] \"rm\" (*e));\n"
16928                                    "}"));
16929   EXPECT_EQ(FormatStyle::LK_Cpp,
16930             guessLanguage("foo.h", "void f() {\n"
16931                                    "  __asm (\"mov %[e], %[d]\"\n"
16932                                    "     : [d] \"=rm\" (d)\n"
16933                                    "       [e] \"rm\" (*e));\n"
16934                                    "}"));
16935   EXPECT_EQ(FormatStyle::LK_Cpp,
16936             guessLanguage("foo.h", "void f() {\n"
16937                                    "  __asm__ (\"mov %[e], %[d]\"\n"
16938                                    "     : [d] \"=rm\" (d)\n"
16939                                    "       [e] \"rm\" (*e));\n"
16940                                    "}"));
16941   EXPECT_EQ(FormatStyle::LK_Cpp,
16942             guessLanguage("foo.h", "void f() {\n"
16943                                    "  asm (\"mov %[e], %[d]\"\n"
16944                                    "     : [d] \"=rm\" (d),\n"
16945                                    "       [e] \"rm\" (*e));\n"
16946                                    "}"));
16947   EXPECT_EQ(FormatStyle::LK_Cpp,
16948             guessLanguage("foo.h", "void f() {\n"
16949                                    "  asm volatile (\"mov %[e], %[d]\"\n"
16950                                    "     : [d] \"=rm\" (d)\n"
16951                                    "       [e] \"rm\" (*e));\n"
16952                                    "}"));
16953 }
16954 
16955 TEST_F(FormatTest, GuessLanguageWithChildLines) {
16956   EXPECT_EQ(FormatStyle::LK_Cpp,
16957             guessLanguage("foo.h", "#define FOO ({ std::string s; })"));
16958   EXPECT_EQ(FormatStyle::LK_ObjC,
16959             guessLanguage("foo.h", "#define FOO ({ NSString *s; })"));
16960   EXPECT_EQ(
16961       FormatStyle::LK_Cpp,
16962       guessLanguage("foo.h", "#define FOO ({ foo(); ({ std::string s; }) })"));
16963   EXPECT_EQ(
16964       FormatStyle::LK_ObjC,
16965       guessLanguage("foo.h", "#define FOO ({ foo(); ({ NSString *s; }) })"));
16966 }
16967 
16968 TEST_F(FormatTest, TypenameMacros) {
16969   std::vector<std::string> TypenameMacros = {"STACK_OF", "LIST", "TAILQ_ENTRY"};
16970 
16971   // Test case reported in https://bugs.llvm.org/show_bug.cgi?id=30353
16972   FormatStyle Google = getGoogleStyleWithColumns(0);
16973   Google.TypenameMacros = TypenameMacros;
16974   verifyFormat("struct foo {\n"
16975                "  int bar;\n"
16976                "  TAILQ_ENTRY(a) bleh;\n"
16977                "};",
16978                Google);
16979 
16980   FormatStyle Macros = getLLVMStyle();
16981   Macros.TypenameMacros = TypenameMacros;
16982 
16983   verifyFormat("STACK_OF(int) a;", Macros);
16984   verifyFormat("STACK_OF(int) *a;", Macros);
16985   verifyFormat("STACK_OF(int const *) *a;", Macros);
16986   verifyFormat("STACK_OF(int *const) *a;", Macros);
16987   verifyFormat("STACK_OF(int, string) a;", Macros);
16988   verifyFormat("STACK_OF(LIST(int)) a;", Macros);
16989   verifyFormat("STACK_OF(LIST(int)) a, b;", Macros);
16990   verifyFormat("for (LIST(int) *a = NULL; a;) {\n}", Macros);
16991   verifyFormat("STACK_OF(int) f(LIST(int) *arg);", Macros);
16992   verifyFormat("vector<LIST(uint64_t) *attr> x;", Macros);
16993   verifyFormat("vector<LIST(uint64_t) *const> f(LIST(uint64_t) *arg);", Macros);
16994 
16995   Macros.PointerAlignment = FormatStyle::PAS_Left;
16996   verifyFormat("STACK_OF(int)* a;", Macros);
16997   verifyFormat("STACK_OF(int*)* a;", Macros);
16998   verifyFormat("x = (STACK_OF(uint64_t))*a;", Macros);
16999   verifyFormat("x = (STACK_OF(uint64_t))&a;", Macros);
17000   verifyFormat("vector<STACK_OF(uint64_t)* attr> x;", Macros);
17001 }
17002 
17003 TEST_F(FormatTest, AtomicQualifier) {
17004   // Check that we treate _Atomic as a type and not a function call
17005   FormatStyle Google = getGoogleStyleWithColumns(0);
17006   verifyFormat("struct foo {\n"
17007                "  int a1;\n"
17008                "  _Atomic(a) a2;\n"
17009                "  _Atomic(_Atomic(int) *const) a3;\n"
17010                "};",
17011                Google);
17012   verifyFormat("_Atomic(uint64_t) a;");
17013   verifyFormat("_Atomic(uint64_t) *a;");
17014   verifyFormat("_Atomic(uint64_t const *) *a;");
17015   verifyFormat("_Atomic(uint64_t *const) *a;");
17016   verifyFormat("_Atomic(const uint64_t *) *a;");
17017   verifyFormat("_Atomic(uint64_t) a;");
17018   verifyFormat("_Atomic(_Atomic(uint64_t)) a;");
17019   verifyFormat("_Atomic(_Atomic(uint64_t)) a, b;");
17020   verifyFormat("for (_Atomic(uint64_t) *a = NULL; a;) {\n}");
17021   verifyFormat("_Atomic(uint64_t) f(_Atomic(uint64_t) *arg);");
17022 
17023   verifyFormat("_Atomic(uint64_t) *s(InitValue);");
17024   verifyFormat("_Atomic(uint64_t) *s{InitValue};");
17025   FormatStyle Style = getLLVMStyle();
17026   Style.PointerAlignment = FormatStyle::PAS_Left;
17027   verifyFormat("_Atomic(uint64_t)* s(InitValue);", Style);
17028   verifyFormat("_Atomic(uint64_t)* s{InitValue};", Style);
17029   verifyFormat("_Atomic(int)* a;", Style);
17030   verifyFormat("_Atomic(int*)* a;", Style);
17031   verifyFormat("vector<_Atomic(uint64_t)* attr> x;", Style);
17032 
17033   Style.SpacesInCStyleCastParentheses = true;
17034   Style.SpacesInParentheses = false;
17035   verifyFormat("x = ( _Atomic(uint64_t) )*a;", Style);
17036   Style.SpacesInCStyleCastParentheses = false;
17037   Style.SpacesInParentheses = true;
17038   verifyFormat("x = (_Atomic( uint64_t ))*a;", Style);
17039   verifyFormat("x = (_Atomic( uint64_t ))&a;", Style);
17040 }
17041 
17042 TEST_F(FormatTest, AmbersandInLamda) {
17043   // Test case reported in https://bugs.llvm.org/show_bug.cgi?id=41899
17044   FormatStyle AlignStyle = getLLVMStyle();
17045   AlignStyle.PointerAlignment = FormatStyle::PAS_Left;
17046   verifyFormat("auto lambda = [&a = a]() { a = 2; };", AlignStyle);
17047   AlignStyle.PointerAlignment = FormatStyle::PAS_Right;
17048   verifyFormat("auto lambda = [&a = a]() { a = 2; };", AlignStyle);
17049 }
17050 
17051 TEST_F(FormatTest, SpacesInConditionalStatement) {
17052   FormatStyle Spaces = getLLVMStyle();
17053   Spaces.SpacesInConditionalStatement = true;
17054   verifyFormat("for ( int i = 0; i; i++ )\n  continue;", Spaces);
17055   verifyFormat("if ( !a )\n  return;", Spaces);
17056   verifyFormat("if ( a )\n  return;", Spaces);
17057   verifyFormat("if constexpr ( a )\n  return;", Spaces);
17058   verifyFormat("switch ( a )\ncase 1:\n  return;", Spaces);
17059   verifyFormat("while ( a )\n  return;", Spaces);
17060   verifyFormat("while ( (a && b) )\n  return;", Spaces);
17061   verifyFormat("do {\n} while ( 1 != 0 );", Spaces);
17062   verifyFormat("try {\n} catch ( const std::exception & ) {\n}", Spaces);
17063   // Check that space on the left of "::" is inserted as expected at beginning
17064   // of condition.
17065   verifyFormat("while ( ::func() )\n  return;", Spaces);
17066 }
17067 
17068 TEST_F(FormatTest, AlternativeOperators) {
17069   // Test case for ensuring alternate operators are not
17070   // combined with their right most neighbour.
17071   verifyFormat("int a and b;");
17072   verifyFormat("int a and_eq b;");
17073   verifyFormat("int a bitand b;");
17074   verifyFormat("int a bitor b;");
17075   verifyFormat("int a compl b;");
17076   verifyFormat("int a not b;");
17077   verifyFormat("int a not_eq b;");
17078   verifyFormat("int a or b;");
17079   verifyFormat("int a xor b;");
17080   verifyFormat("int a xor_eq b;");
17081   verifyFormat("return this not_eq bitand other;");
17082   verifyFormat("bool operator not_eq(const X bitand other)");
17083 
17084   verifyFormat("int a and 5;");
17085   verifyFormat("int a and_eq 5;");
17086   verifyFormat("int a bitand 5;");
17087   verifyFormat("int a bitor 5;");
17088   verifyFormat("int a compl 5;");
17089   verifyFormat("int a not 5;");
17090   verifyFormat("int a not_eq 5;");
17091   verifyFormat("int a or 5;");
17092   verifyFormat("int a xor 5;");
17093   verifyFormat("int a xor_eq 5;");
17094 
17095   verifyFormat("int a compl(5);");
17096   verifyFormat("int a not(5);");
17097 
17098   /* FIXME handle alternate tokens
17099    * https://en.cppreference.com/w/cpp/language/operator_alternative
17100   // alternative tokens
17101   verifyFormat("compl foo();");     //  ~foo();
17102   verifyFormat("foo() <%%>;");      // foo();
17103   verifyFormat("void foo() <%%>;"); // void foo(){}
17104   verifyFormat("int a <:1:>;");     // int a[1];[
17105   verifyFormat("%:define ABC abc"); // #define ABC abc
17106   verifyFormat("%:%:");             // ##
17107   */
17108 }
17109 
17110 TEST_F(FormatTest, STLWhileNotDefineChed) {
17111   verifyFormat("#if defined(while)\n"
17112                "#define while EMIT WARNING C4005\n"
17113                "#endif // while");
17114 }
17115 
17116 TEST_F(FormatTest, OperatorSpacing) {
17117   FormatStyle Style = getLLVMStyle();
17118   Style.PointerAlignment = FormatStyle::PAS_Right;
17119   verifyFormat("Foo::operator*();", Style);
17120   verifyFormat("Foo::operator void *();", Style);
17121   verifyFormat("Foo::operator void **();", Style);
17122   verifyFormat("Foo::operator void *&();", Style);
17123   verifyFormat("Foo::operator void *&&();", Style);
17124   verifyFormat("Foo::operator()(void *);", Style);
17125   verifyFormat("Foo::operator*(void *);", Style);
17126   verifyFormat("Foo::operator*();", Style);
17127   verifyFormat("Foo::operator**();", Style);
17128   verifyFormat("Foo::operator&();", Style);
17129   verifyFormat("Foo::operator<int> *();", Style);
17130   verifyFormat("Foo::operator<Foo> *();", Style);
17131   verifyFormat("Foo::operator<int> **();", Style);
17132   verifyFormat("Foo::operator<Foo> **();", Style);
17133   verifyFormat("Foo::operator<int> &();", Style);
17134   verifyFormat("Foo::operator<Foo> &();", Style);
17135   verifyFormat("Foo::operator<int> &&();", Style);
17136   verifyFormat("Foo::operator<Foo> &&();", Style);
17137   verifyFormat("Foo::operator<int> *&();", Style);
17138   verifyFormat("Foo::operator<Foo> *&();", Style);
17139   verifyFormat("Foo::operator<int> *&&();", Style);
17140   verifyFormat("Foo::operator<Foo> *&&();", Style);
17141   verifyFormat("operator*(int (*)(), class Foo);", Style);
17142 
17143   verifyFormat("Foo::operator&();", Style);
17144   verifyFormat("Foo::operator void &();", Style);
17145   verifyFormat("Foo::operator()(void &);", Style);
17146   verifyFormat("Foo::operator&(void &);", Style);
17147   verifyFormat("Foo::operator&();", Style);
17148   verifyFormat("operator&(int (&)(), class Foo);", Style);
17149 
17150   verifyFormat("Foo::operator&&();", Style);
17151   verifyFormat("Foo::operator**();", Style);
17152   verifyFormat("Foo::operator void &&();", Style);
17153   verifyFormat("Foo::operator()(void &&);", Style);
17154   verifyFormat("Foo::operator&&(void &&);", Style);
17155   verifyFormat("Foo::operator&&();", Style);
17156   verifyFormat("operator&&(int(&&)(), class Foo);", Style);
17157   verifyFormat("operator const nsTArrayRight<E> &()", Style);
17158   verifyFormat("[[nodiscard]] operator const nsTArrayRight<E, Allocator> &()",
17159                Style);
17160   verifyFormat("operator void **()", Style);
17161   verifyFormat("operator const FooRight<Object> &()", Style);
17162   verifyFormat("operator const FooRight<Object> *()", Style);
17163   verifyFormat("operator const FooRight<Object> **()", Style);
17164   verifyFormat("operator const FooRight<Object> *&()", Style);
17165   verifyFormat("operator const FooRight<Object> *&&()", Style);
17166 
17167   Style.PointerAlignment = FormatStyle::PAS_Left;
17168   verifyFormat("Foo::operator*();", Style);
17169   verifyFormat("Foo::operator**();", Style);
17170   verifyFormat("Foo::operator void*();", Style);
17171   verifyFormat("Foo::operator void**();", Style);
17172   verifyFormat("Foo::operator void*&();", Style);
17173   verifyFormat("Foo::operator/*comment*/ void*();", Style);
17174   verifyFormat("Foo::operator/*a*/ const /*b*/ void*();", Style);
17175   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void*();", Style);
17176   verifyFormat("Foo::operator()(void*);", Style);
17177   verifyFormat("Foo::operator*(void*);", Style);
17178   verifyFormat("Foo::operator*();", Style);
17179   verifyFormat("Foo::operator<int>*();", Style);
17180   verifyFormat("Foo::operator<Foo>*();", Style);
17181   verifyFormat("Foo::operator<int>**();", Style);
17182   verifyFormat("Foo::operator<Foo>**();", Style);
17183   verifyFormat("Foo::operator<Foo>*&();", Style);
17184   verifyFormat("Foo::operator<int>&();", Style);
17185   verifyFormat("Foo::operator<Foo>&();", Style);
17186   verifyFormat("Foo::operator<int>&&();", Style);
17187   verifyFormat("Foo::operator<Foo>&&();", Style);
17188   verifyFormat("Foo::operator<int>*&();", Style);
17189   verifyFormat("Foo::operator<Foo>*&();", Style);
17190   verifyFormat("operator*(int (*)(), class Foo);", Style);
17191 
17192   verifyFormat("Foo::operator&();", Style);
17193   verifyFormat("Foo::operator void&();", Style);
17194   verifyFormat("Foo::operator/*comment*/ void&();", Style);
17195   verifyFormat("Foo::operator/*a*/ const /*b*/ void&();", Style);
17196   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void&();", Style);
17197   verifyFormat("Foo::operator()(void&);", Style);
17198   verifyFormat("Foo::operator&(void&);", Style);
17199   verifyFormat("Foo::operator&();", Style);
17200   verifyFormat("operator&(int (&)(), class Foo);", Style);
17201 
17202   verifyFormat("Foo::operator&&();", Style);
17203   verifyFormat("Foo::operator void&&();", Style);
17204   verifyFormat("Foo::operator/*comment*/ void&&();", Style);
17205   verifyFormat("Foo::operator/*a*/ const /*b*/ void&&();", Style);
17206   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void&&();", Style);
17207   verifyFormat("Foo::operator()(void&&);", Style);
17208   verifyFormat("Foo::operator&&(void&&);", Style);
17209   verifyFormat("Foo::operator&&();", Style);
17210   verifyFormat("operator&&(int(&&)(), class Foo);", Style);
17211   verifyFormat("operator const nsTArrayLeft<E>&()", Style);
17212   verifyFormat("[[nodiscard]] operator const nsTArrayLeft<E, Allocator>&()",
17213                Style);
17214   verifyFormat("operator void**()", Style);
17215   verifyFormat("operator const FooLeft<Object>&()", Style);
17216   verifyFormat("operator const FooLeft<Object>*()", Style);
17217   verifyFormat("operator const FooLeft<Object>**()", Style);
17218   verifyFormat("operator const FooLeft<Object>*&()", Style);
17219   verifyFormat("operator const FooLeft<Object>*&&()", Style);
17220 
17221   // PR45107
17222   verifyFormat("operator Vector<String>&();", Style);
17223   verifyFormat("operator const Vector<String>&();", Style);
17224   verifyFormat("operator foo::Bar*();", Style);
17225   verifyFormat("operator const Foo<X>::Bar<Y>*();", Style);
17226   verifyFormat("operator/*a*/ const /*b*/ Foo /*c*/<X> /*d*/ ::Bar<Y>*();",
17227                Style);
17228 
17229   Style.PointerAlignment = FormatStyle::PAS_Middle;
17230   verifyFormat("Foo::operator*();", Style);
17231   verifyFormat("Foo::operator void *();", Style);
17232   verifyFormat("Foo::operator()(void *);", Style);
17233   verifyFormat("Foo::operator*(void *);", Style);
17234   verifyFormat("Foo::operator*();", Style);
17235   verifyFormat("operator*(int (*)(), class Foo);", Style);
17236 
17237   verifyFormat("Foo::operator&();", Style);
17238   verifyFormat("Foo::operator void &();", Style);
17239   verifyFormat("Foo::operator()(void &);", Style);
17240   verifyFormat("Foo::operator&(void &);", Style);
17241   verifyFormat("Foo::operator&();", Style);
17242   verifyFormat("operator&(int (&)(), class Foo);", Style);
17243 
17244   verifyFormat("Foo::operator&&();", Style);
17245   verifyFormat("Foo::operator void &&();", Style);
17246   verifyFormat("Foo::operator()(void &&);", Style);
17247   verifyFormat("Foo::operator&&(void &&);", Style);
17248   verifyFormat("Foo::operator&&();", Style);
17249   verifyFormat("operator&&(int(&&)(), class Foo);", Style);
17250 }
17251 
17252 TEST_F(FormatTest, OperatorPassedAsAFunctionPtr) {
17253   FormatStyle Style = getLLVMStyle();
17254   // PR46157
17255   verifyFormat("foo(operator+, -42);", Style);
17256   verifyFormat("foo(operator++, -42);", Style);
17257   verifyFormat("foo(operator--, -42);", Style);
17258   verifyFormat("foo(-42, operator--);", Style);
17259   verifyFormat("foo(-42, operator, );", Style);
17260   verifyFormat("foo(operator, , -42);", Style);
17261 }
17262 
17263 TEST_F(FormatTest, WhitespaceSensitiveMacros) {
17264   FormatStyle Style = getLLVMStyle();
17265   Style.WhitespaceSensitiveMacros.push_back("FOO");
17266 
17267   // Don't use the helpers here, since 'mess up' will change the whitespace
17268   // and these are all whitespace sensitive by definition
17269   EXPECT_EQ("FOO(String-ized&Messy+But(: :Still)=Intentional);",
17270             format("FOO(String-ized&Messy+But(: :Still)=Intentional);", Style));
17271   EXPECT_EQ(
17272       "FOO(String-ized&Messy+But\\(: :Still)=Intentional);",
17273       format("FOO(String-ized&Messy+But\\(: :Still)=Intentional);", Style));
17274   EXPECT_EQ("FOO(String-ized&Messy+But,: :Still=Intentional);",
17275             format("FOO(String-ized&Messy+But,: :Still=Intentional);", Style));
17276   EXPECT_EQ("FOO(String-ized&Messy+But,: :\n"
17277             "       Still=Intentional);",
17278             format("FOO(String-ized&Messy+But,: :\n"
17279                    "       Still=Intentional);",
17280                    Style));
17281   Style.AlignConsecutiveAssignments = true;
17282   EXPECT_EQ("FOO(String-ized=&Messy+But,: :\n"
17283             "       Still=Intentional);",
17284             format("FOO(String-ized=&Messy+But,: :\n"
17285                    "       Still=Intentional);",
17286                    Style));
17287 
17288   Style.ColumnLimit = 21;
17289   EXPECT_EQ("FOO(String-ized&Messy+But: :Still=Intentional);",
17290             format("FOO(String-ized&Messy+But: :Still=Intentional);", Style));
17291 }
17292 
17293 TEST_F(FormatTest, VeryLongNamespaceCommentSplit) {
17294   // These tests are not in NamespaceFixer because that doesn't
17295   // test its interaction with line wrapping
17296   FormatStyle Style = getLLVMStyle();
17297   Style.ColumnLimit = 80;
17298   verifyFormat("namespace {\n"
17299                "int i;\n"
17300                "int j;\n"
17301                "} // namespace",
17302                Style);
17303 
17304   verifyFormat("namespace AAA {\n"
17305                "int i;\n"
17306                "int j;\n"
17307                "} // namespace AAA",
17308                Style);
17309 
17310   EXPECT_EQ("namespace Averyveryveryverylongnamespace {\n"
17311             "int i;\n"
17312             "int j;\n"
17313             "} // namespace Averyveryveryverylongnamespace",
17314             format("namespace Averyveryveryverylongnamespace {\n"
17315                    "int i;\n"
17316                    "int j;\n"
17317                    "}",
17318                    Style));
17319 
17320   EXPECT_EQ(
17321       "namespace "
17322       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::\n"
17323       "    went::mad::now {\n"
17324       "int i;\n"
17325       "int j;\n"
17326       "} // namespace\n"
17327       "  // "
17328       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::"
17329       "went::mad::now",
17330       format("namespace "
17331              "would::it::save::you::a::lot::of::time::if_::i::"
17332              "just::gave::up::and_::went::mad::now {\n"
17333              "int i;\n"
17334              "int j;\n"
17335              "}",
17336              Style));
17337 
17338   // This used to duplicate the comment again and again on subsequent runs
17339   EXPECT_EQ(
17340       "namespace "
17341       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::\n"
17342       "    went::mad::now {\n"
17343       "int i;\n"
17344       "int j;\n"
17345       "} // namespace\n"
17346       "  // "
17347       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::"
17348       "went::mad::now",
17349       format("namespace "
17350              "would::it::save::you::a::lot::of::time::if_::i::"
17351              "just::gave::up::and_::went::mad::now {\n"
17352              "int i;\n"
17353              "int j;\n"
17354              "} // namespace\n"
17355              "  // "
17356              "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::"
17357              "and_::went::mad::now",
17358              Style));
17359 }
17360 
17361 TEST_F(FormatTest, LikelyUnlikely) {
17362   FormatStyle Style = getLLVMStyle();
17363 
17364   verifyFormat("if (argc > 5) [[unlikely]] {\n"
17365                "  return 29;\n"
17366                "}",
17367                Style);
17368 
17369   verifyFormat("if (argc > 5) [[likely]] {\n"
17370                "  return 29;\n"
17371                "}",
17372                Style);
17373 
17374   verifyFormat("if (argc > 5) [[unlikely]] {\n"
17375                "  return 29;\n"
17376                "} else [[likely]] {\n"
17377                "  return 42;\n"
17378                "}\n",
17379                Style);
17380 
17381   verifyFormat("if (argc > 5) [[unlikely]] {\n"
17382                "  return 29;\n"
17383                "} else if (argc > 10) [[likely]] {\n"
17384                "  return 99;\n"
17385                "} else {\n"
17386                "  return 42;\n"
17387                "}\n",
17388                Style);
17389 
17390   verifyFormat("if (argc > 5) [[gnu::unused]] {\n"
17391                "  return 29;\n"
17392                "}",
17393                Style);
17394 }
17395 
17396 TEST_F(FormatTest, PenaltyIndentedWhitespace) {
17397   verifyFormat("Constructor()\n"
17398                "    : aaaaaa(aaaaaa), aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
17399                "                          aaaa(aaaaaaaaaaaaaaaaaa, "
17400                "aaaaaaaaaaaaaaaaaat))");
17401   verifyFormat("Constructor()\n"
17402                "    : aaaaaaaaaaaaa(aaaaaa), "
17403                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa)");
17404 
17405   FormatStyle StyleWithWhitespacePenalty = getLLVMStyle();
17406   StyleWithWhitespacePenalty.PenaltyIndentedWhitespace = 5;
17407   verifyFormat("Constructor()\n"
17408                "    : aaaaaa(aaaaaa),\n"
17409                "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
17410                "          aaaa(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaat))",
17411                StyleWithWhitespacePenalty);
17412   verifyFormat("Constructor()\n"
17413                "    : aaaaaaaaaaaaa(aaaaaa), "
17414                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa)",
17415                StyleWithWhitespacePenalty);
17416 }
17417 
17418 TEST_F(FormatTest, LLVMDefaultStyle) {
17419   FormatStyle Style = getLLVMStyle();
17420   verifyFormat("extern \"C\" {\n"
17421                "int foo();\n"
17422                "}",
17423                Style);
17424 }
17425 TEST_F(FormatTest, GNUDefaultStyle) {
17426   FormatStyle Style = getGNUStyle();
17427   verifyFormat("extern \"C\"\n"
17428                "{\n"
17429                "  int foo ();\n"
17430                "}",
17431                Style);
17432 }
17433 TEST_F(FormatTest, MozillaDefaultStyle) {
17434   FormatStyle Style = getMozillaStyle();
17435   verifyFormat("extern \"C\"\n"
17436                "{\n"
17437                "  int foo();\n"
17438                "}",
17439                Style);
17440 }
17441 TEST_F(FormatTest, GoogleDefaultStyle) {
17442   FormatStyle Style = getGoogleStyle();
17443   verifyFormat("extern \"C\" {\n"
17444                "int foo();\n"
17445                "}",
17446                Style);
17447 }
17448 TEST_F(FormatTest, ChromiumDefaultStyle) {
17449   FormatStyle Style = getChromiumStyle(FormatStyle::LanguageKind::LK_Cpp);
17450   verifyFormat("extern \"C\" {\n"
17451                "int foo();\n"
17452                "}",
17453                Style);
17454 }
17455 TEST_F(FormatTest, MicrosoftDefaultStyle) {
17456   FormatStyle Style = getMicrosoftStyle(FormatStyle::LanguageKind::LK_Cpp);
17457   verifyFormat("extern \"C\"\n"
17458                "{\n"
17459                "    int foo();\n"
17460                "}",
17461                Style);
17462 }
17463 TEST_F(FormatTest, WebKitDefaultStyle) {
17464   FormatStyle Style = getWebKitStyle();
17465   verifyFormat("extern \"C\" {\n"
17466                "int foo();\n"
17467                "}",
17468                Style);
17469 }
17470 
17471 TEST_F(FormatTest, ConceptsAndRequires) {
17472   FormatStyle Style = getLLVMStyle();
17473   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
17474 
17475   verifyFormat("template <typename T>\n"
17476                "concept Hashable = requires(T a) {\n"
17477                "  { std::hash<T>{}(a) } -> std::convertible_to<std::size_t>;\n"
17478                "};",
17479                Style);
17480   verifyFormat("template <typename T>\n"
17481                "concept EqualityComparable = requires(T a, T b) {\n"
17482                "  { a == b } -> bool;\n"
17483                "};",
17484                Style);
17485   verifyFormat("template <typename T>\n"
17486                "concept EqualityComparable = requires(T a, T b) {\n"
17487                "  { a == b } -> bool;\n"
17488                "  { a != b } -> bool;\n"
17489                "};",
17490                Style);
17491   verifyFormat("template <typename T>\n"
17492                "concept EqualityComparable = requires(T a, T b) {\n"
17493                "  { a == b } -> bool;\n"
17494                "  { a != b } -> bool;\n"
17495                "};",
17496                Style);
17497 
17498   verifyFormat("template <typename It>\n"
17499                "requires Iterator<It>\n"
17500                "void sort(It begin, It end) {\n"
17501                "  //....\n"
17502                "}",
17503                Style);
17504 
17505   verifyFormat("template <typename T>\n"
17506                "concept Large = sizeof(T) > 10;",
17507                Style);
17508 
17509   verifyFormat("template <typename T, typename U>\n"
17510                "concept FooableWith = requires(T t, U u) {\n"
17511                "  typename T::foo_type;\n"
17512                "  { t.foo(u) } -> typename T::foo_type;\n"
17513                "  t++;\n"
17514                "};\n"
17515                "void doFoo(FooableWith<int> auto t) {\n"
17516                "  t.foo(3);\n"
17517                "}",
17518                Style);
17519   verifyFormat("template <typename T>\n"
17520                "concept Context = sizeof(T) == 1;",
17521                Style);
17522   verifyFormat("template <typename T>\n"
17523                "concept Context = is_specialization_of_v<context, T>;",
17524                Style);
17525   verifyFormat("template <typename T>\n"
17526                "concept Node = std::is_object_v<T>;",
17527                Style);
17528   verifyFormat("template <typename T>\n"
17529                "concept Tree = true;",
17530                Style);
17531 
17532   verifyFormat("template <typename T> int g(T i) requires Concept1<I> {\n"
17533                "  //...\n"
17534                "}",
17535                Style);
17536 
17537   verifyFormat(
17538       "template <typename T> int g(T i) requires Concept1<I> && Concept2<I> {\n"
17539       "  //...\n"
17540       "}",
17541       Style);
17542 
17543   verifyFormat(
17544       "template <typename T> int g(T i) requires Concept1<I> || Concept2<I> {\n"
17545       "  //...\n"
17546       "}",
17547       Style);
17548 
17549   verifyFormat("template <typename T>\n"
17550                "veryveryvery_long_return_type g(T i) requires Concept1<I> || "
17551                "Concept2<I> {\n"
17552                "  //...\n"
17553                "}",
17554                Style);
17555 
17556   verifyFormat("template <typename T>\n"
17557                "veryveryvery_long_return_type g(T i) requires Concept1<I> && "
17558                "Concept2<I> {\n"
17559                "  //...\n"
17560                "}",
17561                Style);
17562 
17563   verifyFormat(
17564       "template <typename T>\n"
17565       "veryveryvery_long_return_type g(T i) requires Concept1 && Concept2 {\n"
17566       "  //...\n"
17567       "}",
17568       Style);
17569 
17570   verifyFormat(
17571       "template <typename T>\n"
17572       "veryveryvery_long_return_type g(T i) requires Concept1 || Concept2 {\n"
17573       "  //...\n"
17574       "}",
17575       Style);
17576 
17577   verifyFormat("template <typename It>\n"
17578                "requires Foo<It>() && Bar<It> {\n"
17579                "  //....\n"
17580                "}",
17581                Style);
17582 
17583   verifyFormat("template <typename It>\n"
17584                "requires Foo<Bar<It>>() && Bar<Foo<It, It>> {\n"
17585                "  //....\n"
17586                "}",
17587                Style);
17588 
17589   verifyFormat("template <typename It>\n"
17590                "requires Foo<Bar<It, It>>() && Bar<Foo<It, It>> {\n"
17591                "  //....\n"
17592                "}",
17593                Style);
17594 
17595   verifyFormat(
17596       "template <typename It>\n"
17597       "requires Foo<Bar<It>, Baz<It>>() && Bar<Foo<It>, Baz<It, It>> {\n"
17598       "  //....\n"
17599       "}",
17600       Style);
17601 
17602   Style.IndentRequires = true;
17603   verifyFormat("template <typename It>\n"
17604                "  requires Iterator<It>\n"
17605                "void sort(It begin, It end) {\n"
17606                "  //....\n"
17607                "}",
17608                Style);
17609   verifyFormat("template <std::size index_>\n"
17610                "  requires(index_ < sizeof...(Children_))\n"
17611                "Tree auto &child() {\n"
17612                "  // ...\n"
17613                "}",
17614                Style);
17615 
17616   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
17617   verifyFormat("template <typename T>\n"
17618                "concept Hashable = requires (T a) {\n"
17619                "  { std::hash<T>{}(a) } -> std::convertible_to<std::size_t>;\n"
17620                "};",
17621                Style);
17622 
17623   verifyFormat("template <class T = void>\n"
17624                "  requires EqualityComparable<T> || Same<T, void>\n"
17625                "struct equal_to;",
17626                Style);
17627 
17628   verifyFormat("template <class T>\n"
17629                "  requires requires {\n"
17630                "    T{};\n"
17631                "    T (int);\n"
17632                "  }\n",
17633                Style);
17634 
17635   Style.ColumnLimit = 78;
17636   verifyFormat("template <typename T>\n"
17637                "concept Context = Traits<typename T::traits_type> and\n"
17638                "    Interface<typename T::interface_type> and\n"
17639                "    Request<typename T::request_type> and\n"
17640                "    Response<typename T::response_type> and\n"
17641                "    ContextExtension<typename T::extension_type> and\n"
17642                "    ::std::is_copy_constructable<T> and "
17643                "::std::is_move_constructable<T> and\n"
17644                "    requires (T c) {\n"
17645                "  { c.response; } -> Response;\n"
17646                "} and requires (T c) {\n"
17647                "  { c.request; } -> Request;\n"
17648                "}\n",
17649                Style);
17650 
17651   verifyFormat("template <typename T>\n"
17652                "concept Context = Traits<typename T::traits_type> or\n"
17653                "    Interface<typename T::interface_type> or\n"
17654                "    Request<typename T::request_type> or\n"
17655                "    Response<typename T::response_type> or\n"
17656                "    ContextExtension<typename T::extension_type> or\n"
17657                "    ::std::is_copy_constructable<T> or "
17658                "::std::is_move_constructable<T> or\n"
17659                "    requires (T c) {\n"
17660                "  { c.response; } -> Response;\n"
17661                "} or requires (T c) {\n"
17662                "  { c.request; } -> Request;\n"
17663                "}\n",
17664                Style);
17665 
17666   verifyFormat("template <typename T>\n"
17667                "concept Context = Traits<typename T::traits_type> &&\n"
17668                "    Interface<typename T::interface_type> &&\n"
17669                "    Request<typename T::request_type> &&\n"
17670                "    Response<typename T::response_type> &&\n"
17671                "    ContextExtension<typename T::extension_type> &&\n"
17672                "    ::std::is_copy_constructable<T> && "
17673                "::std::is_move_constructable<T> &&\n"
17674                "    requires (T c) {\n"
17675                "  { c.response; } -> Response;\n"
17676                "} && requires (T c) {\n"
17677                "  { c.request; } -> Request;\n"
17678                "}\n",
17679                Style);
17680 
17681   verifyFormat("template <typename T>\nconcept someConcept = Constraint1<T> && "
17682                "Constraint2<T>;");
17683 
17684   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
17685   Style.BraceWrapping.AfterFunction = true;
17686   Style.BraceWrapping.AfterClass = true;
17687   Style.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
17688   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
17689   verifyFormat("void Foo () requires (std::copyable<T>)\n"
17690                "{\n"
17691                "  return\n"
17692                "}\n",
17693                Style);
17694 
17695   verifyFormat("void Foo () requires std::copyable<T>\n"
17696                "{\n"
17697                "  return\n"
17698                "}\n",
17699                Style);
17700 
17701   verifyFormat("template <std::semiregular F, std::semiregular... Args>\n"
17702                "  requires (std::invocable<F, std::invoke_result_t<Args>...>)\n"
17703                "struct constant;",
17704                Style);
17705 
17706   verifyFormat("template <std::semiregular F, std::semiregular... Args>\n"
17707                "  requires std::invocable<F, std::invoke_result_t<Args>...>\n"
17708                "struct constant;",
17709                Style);
17710 
17711   verifyFormat("template <class T>\n"
17712                "class plane_with_very_very_very_long_name\n"
17713                "{\n"
17714                "  constexpr plane_with_very_very_very_long_name () requires "
17715                "std::copyable<T>\n"
17716                "      : plane_with_very_very_very_long_name (1)\n"
17717                "  {\n"
17718                "  }\n"
17719                "}\n",
17720                Style);
17721 
17722   verifyFormat("template <class T>\n"
17723                "class plane_with_long_name\n"
17724                "{\n"
17725                "  constexpr plane_with_long_name () requires std::copyable<T>\n"
17726                "      : plane_with_long_name (1)\n"
17727                "  {\n"
17728                "  }\n"
17729                "}\n",
17730                Style);
17731 
17732   Style.BreakBeforeConceptDeclarations = false;
17733   verifyFormat("template <typename T> concept Tree = true;", Style);
17734 
17735   Style.IndentRequires = false;
17736   verifyFormat("template <std::semiregular F, std::semiregular... Args>\n"
17737                "requires (std::invocable<F, std::invoke_result_t<Args>...>) "
17738                "struct constant;",
17739                Style);
17740 }
17741 } // namespace
17742 } // namespace format
17743 } // namespace clang
17744