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, FormatsAccessModifiers) {
8891   FormatStyle Style = getLLVMStyle();
8892   EXPECT_EQ(Style.EmptyLineBeforeAccessModifier,
8893             FormatStyle::ELBAMS_LogicalBlock);
8894   verifyFormat("struct foo {\n"
8895                "private:\n"
8896                "  void f() {}\n"
8897                "\n"
8898                "private:\n"
8899                "  int i;\n"
8900                "\n"
8901                "protected:\n"
8902                "  int j;\n"
8903                "};\n",
8904                Style);
8905   verifyFormat("struct foo {\n"
8906                "private:\n"
8907                "  void f() {}\n"
8908                "\n"
8909                "private:\n"
8910                "  int i;\n"
8911                "\n"
8912                "protected:\n"
8913                "  int j;\n"
8914                "};\n",
8915                "struct foo {\n"
8916                "private:\n"
8917                "  void f() {}\n"
8918                "private:\n"
8919                "  int i;\n"
8920                "protected:\n"
8921                "  int j;\n"
8922                "};\n",
8923                Style);
8924   verifyFormat("struct foo { /* comment */\n"
8925                "private:\n"
8926                "  int i;\n"
8927                "  // comment\n"
8928                "private:\n"
8929                "  int j;\n"
8930                "};\n",
8931                Style);
8932   verifyFormat("struct foo {\n"
8933                "#ifdef FOO\n"
8934                "#endif\n"
8935                "private:\n"
8936                "  int i;\n"
8937                "#ifdef FOO\n"
8938                "private:\n"
8939                "#endif\n"
8940                "  int j;\n"
8941                "};\n",
8942                Style);
8943   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Never;
8944   verifyFormat("struct foo {\n"
8945                "private:\n"
8946                "  void f() {}\n"
8947                "private:\n"
8948                "  int i;\n"
8949                "protected:\n"
8950                "  int j;\n"
8951                "};\n",
8952                Style);
8953   verifyFormat("struct foo {\n"
8954                "private:\n"
8955                "  void f() {}\n"
8956                "private:\n"
8957                "  int i;\n"
8958                "protected:\n"
8959                "  int j;\n"
8960                "};\n",
8961                "struct foo {\n"
8962                "\n"
8963                "private:\n"
8964                "  void f() {}\n"
8965                "\n"
8966                "private:\n"
8967                "  int i;\n"
8968                "\n"
8969                "protected:\n"
8970                "  int j;\n"
8971                "};\n",
8972                Style);
8973   verifyFormat("struct foo { /* comment */\n"
8974                "private:\n"
8975                "  int i;\n"
8976                "  // comment\n"
8977                "private:\n"
8978                "  int j;\n"
8979                "};\n",
8980                "struct foo { /* comment */\n"
8981                "\n"
8982                "private:\n"
8983                "  int i;\n"
8984                "  // comment\n"
8985                "\n"
8986                "private:\n"
8987                "  int j;\n"
8988                "};\n",
8989                Style);
8990   verifyFormat("struct foo {\n"
8991                "#ifdef FOO\n"
8992                "#endif\n"
8993                "private:\n"
8994                "  int i;\n"
8995                "#ifdef FOO\n"
8996                "private:\n"
8997                "#endif\n"
8998                "  int j;\n"
8999                "};\n",
9000                "struct foo {\n"
9001                "#ifdef FOO\n"
9002                "#endif\n"
9003                "\n"
9004                "private:\n"
9005                "  int i;\n"
9006                "#ifdef FOO\n"
9007                "\n"
9008                "private:\n"
9009                "#endif\n"
9010                "  int j;\n"
9011                "};\n",
9012                Style);
9013   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Always;
9014   verifyFormat("struct foo {\n"
9015                "private:\n"
9016                "  void f() {}\n"
9017                "\n"
9018                "private:\n"
9019                "  int i;\n"
9020                "\n"
9021                "protected:\n"
9022                "  int j;\n"
9023                "};\n",
9024                Style);
9025   verifyFormat("struct foo {\n"
9026                "private:\n"
9027                "  void f() {}\n"
9028                "\n"
9029                "private:\n"
9030                "  int i;\n"
9031                "\n"
9032                "protected:\n"
9033                "  int j;\n"
9034                "};\n",
9035                "struct foo {\n"
9036                "private:\n"
9037                "  void f() {}\n"
9038                "private:\n"
9039                "  int i;\n"
9040                "protected:\n"
9041                "  int j;\n"
9042                "};\n",
9043                Style);
9044   verifyFormat("struct foo { /* comment */\n"
9045                "private:\n"
9046                "  int i;\n"
9047                "  // comment\n"
9048                "\n"
9049                "private:\n"
9050                "  int j;\n"
9051                "};\n",
9052                "struct foo { /* comment */\n"
9053                "private:\n"
9054                "  int i;\n"
9055                "  // comment\n"
9056                "\n"
9057                "private:\n"
9058                "  int j;\n"
9059                "};\n",
9060                Style);
9061   verifyFormat("struct foo {\n"
9062                "#ifdef FOO\n"
9063                "#endif\n"
9064                "\n"
9065                "private:\n"
9066                "  int i;\n"
9067                "#ifdef FOO\n"
9068                "\n"
9069                "private:\n"
9070                "#endif\n"
9071                "  int j;\n"
9072                "};\n",
9073                "struct foo {\n"
9074                "#ifdef FOO\n"
9075                "#endif\n"
9076                "private:\n"
9077                "  int i;\n"
9078                "#ifdef FOO\n"
9079                "private:\n"
9080                "#endif\n"
9081                "  int j;\n"
9082                "};\n",
9083                Style);
9084   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_Leave;
9085   EXPECT_EQ("struct foo {\n"
9086             "\n"
9087             "private:\n"
9088             "  void f() {}\n"
9089             "\n"
9090             "private:\n"
9091             "  int i;\n"
9092             "\n"
9093             "protected:\n"
9094             "  int j;\n"
9095             "};\n",
9096             format("struct foo {\n"
9097                    "\n"
9098                    "private:\n"
9099                    "  void f() {}\n"
9100                    "\n"
9101                    "private:\n"
9102                    "  int i;\n"
9103                    "\n"
9104                    "protected:\n"
9105                    "  int j;\n"
9106                    "};\n",
9107                    Style));
9108   verifyFormat("struct foo {\n"
9109                "private:\n"
9110                "  void f() {}\n"
9111                "private:\n"
9112                "  int i;\n"
9113                "protected:\n"
9114                "  int j;\n"
9115                "};\n",
9116                Style);
9117   EXPECT_EQ("struct foo { /* comment */\n"
9118             "\n"
9119             "private:\n"
9120             "  int i;\n"
9121             "  // comment\n"
9122             "\n"
9123             "private:\n"
9124             "  int j;\n"
9125             "};\n",
9126             format("struct foo { /* comment */\n"
9127                    "\n"
9128                    "private:\n"
9129                    "  int i;\n"
9130                    "  // comment\n"
9131                    "\n"
9132                    "private:\n"
9133                    "  int j;\n"
9134                    "};\n",
9135                    Style));
9136   verifyFormat("struct foo { /* comment */\n"
9137                "private:\n"
9138                "  int i;\n"
9139                "  // comment\n"
9140                "private:\n"
9141                "  int j;\n"
9142                "};\n",
9143                Style);
9144   EXPECT_EQ("struct foo {\n"
9145             "#ifdef FOO\n"
9146             "#endif\n"
9147             "\n"
9148             "private:\n"
9149             "  int i;\n"
9150             "#ifdef FOO\n"
9151             "\n"
9152             "private:\n"
9153             "#endif\n"
9154             "  int j;\n"
9155             "};\n",
9156             format("struct foo {\n"
9157                    "#ifdef FOO\n"
9158                    "#endif\n"
9159                    "\n"
9160                    "private:\n"
9161                    "  int i;\n"
9162                    "#ifdef FOO\n"
9163                    "\n"
9164                    "private:\n"
9165                    "#endif\n"
9166                    "  int j;\n"
9167                    "};\n",
9168                    Style));
9169   verifyFormat("struct foo {\n"
9170                "#ifdef FOO\n"
9171                "#endif\n"
9172                "private:\n"
9173                "  int i;\n"
9174                "#ifdef FOO\n"
9175                "private:\n"
9176                "#endif\n"
9177                "  int j;\n"
9178                "};\n",
9179                Style);
9180 }
9181 
9182 TEST_F(FormatTest, FormatsArrays) {
9183   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
9184                "                         [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;");
9185   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa(aaaaaaaaaaaa)]\n"
9186                "                         [bbbbbbbbbbb(bbbbbbbbbbbb)] = c;");
9187   verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaa &&\n"
9188                "    aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaa][aaaaaaaaaaaaa]) {\n}");
9189   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9190                "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
9191   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9192                "    [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;");
9193   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
9194                "    [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n"
9195                "    [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;");
9196   verifyFormat(
9197       "llvm::outs() << \"aaaaaaaaaaaa: \"\n"
9198       "             << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n"
9199       "                                  [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];");
9200   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaa][a]\n"
9201                "    .aaaaaaaaaaaaaaaaaaaaaa();");
9202 
9203   verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n"
9204                      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];");
9205   verifyFormat(
9206       "aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n"
9207       "                                  .aaaaaaa[0]\n"
9208       "                                  .aaaaaaaaaaaaaaaaaaaaaa();");
9209   verifyFormat("a[::b::c];");
9210 
9211   verifyNoCrash("a[,Y?)]", getLLVMStyleWithColumns(10));
9212 
9213   FormatStyle NoColumnLimit = getLLVMStyleWithColumns(0);
9214   verifyFormat("aaaaa[bbbbbb].cccccc()", NoColumnLimit);
9215 }
9216 
9217 TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
9218   verifyFormat("(a)->b();");
9219   verifyFormat("--a;");
9220 }
9221 
9222 TEST_F(FormatTest, HandlesIncludeDirectives) {
9223   verifyFormat("#include <string>\n"
9224                "#include <a/b/c.h>\n"
9225                "#include \"a/b/string\"\n"
9226                "#include \"string.h\"\n"
9227                "#include \"string.h\"\n"
9228                "#include <a-a>\n"
9229                "#include < path with space >\n"
9230                "#include_next <test.h>"
9231                "#include \"abc.h\" // this is included for ABC\n"
9232                "#include \"some long include\" // with a comment\n"
9233                "#include \"some very long include path\"\n"
9234                "#include <some/very/long/include/path>\n",
9235                getLLVMStyleWithColumns(35));
9236   EXPECT_EQ("#include \"a.h\"", format("#include  \"a.h\""));
9237   EXPECT_EQ("#include <a>", format("#include<a>"));
9238 
9239   verifyFormat("#import <string>");
9240   verifyFormat("#import <a/b/c.h>");
9241   verifyFormat("#import \"a/b/string\"");
9242   verifyFormat("#import \"string.h\"");
9243   verifyFormat("#import \"string.h\"");
9244   verifyFormat("#if __has_include(<strstream>)\n"
9245                "#include <strstream>\n"
9246                "#endif");
9247 
9248   verifyFormat("#define MY_IMPORT <a/b>");
9249 
9250   verifyFormat("#if __has_include(<a/b>)");
9251   verifyFormat("#if __has_include_next(<a/b>)");
9252   verifyFormat("#define F __has_include(<a/b>)");
9253   verifyFormat("#define F __has_include_next(<a/b>)");
9254 
9255   // Protocol buffer definition or missing "#".
9256   verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";",
9257                getLLVMStyleWithColumns(30));
9258 
9259   FormatStyle Style = getLLVMStyle();
9260   Style.AlwaysBreakBeforeMultilineStrings = true;
9261   Style.ColumnLimit = 0;
9262   verifyFormat("#import \"abc.h\"", Style);
9263 
9264   // But 'import' might also be a regular C++ namespace.
9265   verifyFormat("import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9266                "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
9267 }
9268 
9269 //===----------------------------------------------------------------------===//
9270 // Error recovery tests.
9271 //===----------------------------------------------------------------------===//
9272 
9273 TEST_F(FormatTest, IncompleteParameterLists) {
9274   FormatStyle NoBinPacking = getLLVMStyle();
9275   NoBinPacking.BinPackParameters = false;
9276   verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
9277                "                        double *min_x,\n"
9278                "                        double *max_x,\n"
9279                "                        double *min_y,\n"
9280                "                        double *max_y,\n"
9281                "                        double *min_z,\n"
9282                "                        double *max_z, ) {}",
9283                NoBinPacking);
9284 }
9285 
9286 TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
9287   verifyFormat("void f() { return; }\n42");
9288   verifyFormat("void f() {\n"
9289                "  if (0)\n"
9290                "    return;\n"
9291                "}\n"
9292                "42");
9293   verifyFormat("void f() { return }\n42");
9294   verifyFormat("void f() {\n"
9295                "  if (0)\n"
9296                "    return\n"
9297                "}\n"
9298                "42");
9299 }
9300 
9301 TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
9302   EXPECT_EQ("void f() { return }", format("void  f ( )  {  return  }"));
9303   EXPECT_EQ("void f() {\n"
9304             "  if (a)\n"
9305             "    return\n"
9306             "}",
9307             format("void  f  (  )  {  if  ( a )  return  }"));
9308   EXPECT_EQ("namespace N {\n"
9309             "void f()\n"
9310             "}",
9311             format("namespace  N  {  void f()  }"));
9312   EXPECT_EQ("namespace N {\n"
9313             "void f() {}\n"
9314             "void g()\n"
9315             "} // namespace N",
9316             format("namespace N  { void f( ) { } void g( ) }"));
9317 }
9318 
9319 TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
9320   verifyFormat("int aaaaaaaa =\n"
9321                "    // Overlylongcomment\n"
9322                "    b;",
9323                getLLVMStyleWithColumns(20));
9324   verifyFormat("function(\n"
9325                "    ShortArgument,\n"
9326                "    LoooooooooooongArgument);\n",
9327                getLLVMStyleWithColumns(20));
9328 }
9329 
9330 TEST_F(FormatTest, IncorrectAccessSpecifier) {
9331   verifyFormat("public:");
9332   verifyFormat("class A {\n"
9333                "public\n"
9334                "  void f() {}\n"
9335                "};");
9336   verifyFormat("public\n"
9337                "int qwerty;");
9338   verifyFormat("public\n"
9339                "B {}");
9340   verifyFormat("public\n"
9341                "{}");
9342   verifyFormat("public\n"
9343                "B { int x; }");
9344 }
9345 
9346 TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
9347   verifyFormat("{");
9348   verifyFormat("#})");
9349   verifyNoCrash("(/**/[:!] ?[).");
9350 }
9351 
9352 TEST_F(FormatTest, IncorrectUnbalancedBracesInMacrosWithUnicode) {
9353   // Found by oss-fuzz:
9354   // https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8212
9355   FormatStyle Style = getGoogleStyle(FormatStyle::LK_Cpp);
9356   Style.ColumnLimit = 60;
9357   verifyNoCrash(
9358       "\x23\x47\xff\x20\x28\xff\x3c\xff\x3f\xff\x20\x2f\x7b\x7a\xff\x20"
9359       "\xff\xff\xff\xca\xb5\xff\xff\xff\xff\x3a\x7b\x7d\xff\x20\xff\x20"
9360       "\xff\x74\xff\x20\x7d\x7d\xff\x7b\x3a\xff\x20\x71\xff\x20\xff\x0a",
9361       Style);
9362 }
9363 
9364 TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
9365   verifyFormat("do {\n}");
9366   verifyFormat("do {\n}\n"
9367                "f();");
9368   verifyFormat("do {\n}\n"
9369                "wheeee(fun);");
9370   verifyFormat("do {\n"
9371                "  f();\n"
9372                "}");
9373 }
9374 
9375 TEST_F(FormatTest, IncorrectCodeMissingParens) {
9376   verifyFormat("if {\n  foo;\n  foo();\n}");
9377   verifyFormat("switch {\n  foo;\n  foo();\n}");
9378   verifyIncompleteFormat("for {\n  foo;\n  foo();\n}");
9379   verifyFormat("while {\n  foo;\n  foo();\n}");
9380   verifyFormat("do {\n  foo;\n  foo();\n} while;");
9381 }
9382 
9383 TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
9384   verifyIncompleteFormat("namespace {\n"
9385                          "class Foo { Foo (\n"
9386                          "};\n"
9387                          "} // namespace");
9388 }
9389 
9390 TEST_F(FormatTest, IncorrectCodeErrorDetection) {
9391   EXPECT_EQ("{\n  {}\n", format("{\n{\n}\n"));
9392   EXPECT_EQ("{\n  {}\n", format("{\n  {\n}\n"));
9393   EXPECT_EQ("{\n  {}\n", format("{\n  {\n  }\n"));
9394   EXPECT_EQ("{\n  {}\n}\n}\n", format("{\n  {\n    }\n  }\n}\n"));
9395 
9396   EXPECT_EQ("{\n"
9397             "  {\n"
9398             "    breakme(\n"
9399             "        qwe);\n"
9400             "  }\n",
9401             format("{\n"
9402                    "    {\n"
9403                    " breakme(qwe);\n"
9404                    "}\n",
9405                    getLLVMStyleWithColumns(10)));
9406 }
9407 
9408 TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
9409   verifyFormat("int x = {\n"
9410                "    avariable,\n"
9411                "    b(alongervariable)};",
9412                getLLVMStyleWithColumns(25));
9413 }
9414 
9415 TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
9416   verifyFormat("return (a)(b){1, 2, 3};");
9417 }
9418 
9419 TEST_F(FormatTest, LayoutCxx11BraceInitializers) {
9420   verifyFormat("vector<int> x{1, 2, 3, 4};");
9421   verifyFormat("vector<int> x{\n"
9422                "    1,\n"
9423                "    2,\n"
9424                "    3,\n"
9425                "    4,\n"
9426                "};");
9427   verifyFormat("vector<T> x{{}, {}, {}, {}};");
9428   verifyFormat("f({1, 2});");
9429   verifyFormat("auto v = Foo{-1};");
9430   verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});");
9431   verifyFormat("Class::Class : member{1, 2, 3} {}");
9432   verifyFormat("new vector<int>{1, 2, 3};");
9433   verifyFormat("new int[3]{1, 2, 3};");
9434   verifyFormat("new int{1};");
9435   verifyFormat("return {arg1, arg2};");
9436   verifyFormat("return {arg1, SomeType{parameter}};");
9437   verifyFormat("int count = set<int>{f(), g(), h()}.size();");
9438   verifyFormat("new T{arg1, arg2};");
9439   verifyFormat("f(MyMap[{composite, key}]);");
9440   verifyFormat("class Class {\n"
9441                "  T member = {arg1, arg2};\n"
9442                "};");
9443   verifyFormat("vector<int> foo = {::SomeGlobalFunction()};");
9444   verifyFormat("const struct A a = {.a = 1, .b = 2};");
9445   verifyFormat("const struct A a = {[0] = 1, [1] = 2};");
9446   verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");");
9447   verifyFormat("int a = std::is_integral<int>{} + 0;");
9448 
9449   verifyFormat("int foo(int i) { return fo1{}(i); }");
9450   verifyFormat("int foo(int i) { return fo1{}(i); }");
9451   verifyFormat("auto i = decltype(x){};");
9452   verifyFormat("auto i = typeof(x){};");
9453   verifyFormat("auto i = _Atomic(x){};");
9454   verifyFormat("std::vector<int> v = {1, 0 /* comment */};");
9455   verifyFormat("Node n{1, Node{1000}, //\n"
9456                "       2};");
9457   verifyFormat("Aaaa aaaaaaa{\n"
9458                "    {\n"
9459                "        aaaa,\n"
9460                "    },\n"
9461                "};");
9462   verifyFormat("class C : public D {\n"
9463                "  SomeClass SC{2};\n"
9464                "};");
9465   verifyFormat("class C : public A {\n"
9466                "  class D : public B {\n"
9467                "    void f() { int i{2}; }\n"
9468                "  };\n"
9469                "};");
9470   verifyFormat("#define A {a, a},");
9471 
9472   // Avoid breaking between equal sign and opening brace
9473   FormatStyle AvoidBreakingFirstArgument = getLLVMStyle();
9474   AvoidBreakingFirstArgument.PenaltyBreakBeforeFirstCallParameter = 200;
9475   verifyFormat("const std::unordered_map<std::string, int> MyHashTable =\n"
9476                "    {{\"aaaaaaaaaaaaaaaaaaaaa\", 0},\n"
9477                "     {\"bbbbbbbbbbbbbbbbbbbbb\", 1},\n"
9478                "     {\"ccccccccccccccccccccc\", 2}};",
9479                AvoidBreakingFirstArgument);
9480 
9481   // Binpacking only if there is no trailing comma
9482   verifyFormat("const Aaaaaa aaaaa = {aaaaaaaaaa, bbbbbbbbbb,\n"
9483                "                      cccccccccc, dddddddddd};",
9484                getLLVMStyleWithColumns(50));
9485   verifyFormat("const Aaaaaa aaaaa = {\n"
9486                "    aaaaaaaaaaa,\n"
9487                "    bbbbbbbbbbb,\n"
9488                "    ccccccccccc,\n"
9489                "    ddddddddddd,\n"
9490                "};",
9491                getLLVMStyleWithColumns(50));
9492 
9493   // Cases where distinguising braced lists and blocks is hard.
9494   verifyFormat("vector<int> v{12} GUARDED_BY(mutex);");
9495   verifyFormat("void f() {\n"
9496                "  return; // comment\n"
9497                "}\n"
9498                "SomeType t;");
9499   verifyFormat("void f() {\n"
9500                "  if (a) {\n"
9501                "    f();\n"
9502                "  }\n"
9503                "}\n"
9504                "SomeType t;");
9505 
9506   // In combination with BinPackArguments = false.
9507   FormatStyle NoBinPacking = getLLVMStyle();
9508   NoBinPacking.BinPackArguments = false;
9509   verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n"
9510                "                      bbbbb,\n"
9511                "                      ccccc,\n"
9512                "                      ddddd,\n"
9513                "                      eeeee,\n"
9514                "                      ffffff,\n"
9515                "                      ggggg,\n"
9516                "                      hhhhhh,\n"
9517                "                      iiiiii,\n"
9518                "                      jjjjjj,\n"
9519                "                      kkkkkk};",
9520                NoBinPacking);
9521   verifyFormat("const Aaaaaa aaaaa = {\n"
9522                "    aaaaa,\n"
9523                "    bbbbb,\n"
9524                "    ccccc,\n"
9525                "    ddddd,\n"
9526                "    eeeee,\n"
9527                "    ffffff,\n"
9528                "    ggggg,\n"
9529                "    hhhhhh,\n"
9530                "    iiiiii,\n"
9531                "    jjjjjj,\n"
9532                "    kkkkkk,\n"
9533                "};",
9534                NoBinPacking);
9535   verifyFormat(
9536       "const Aaaaaa aaaaa = {\n"
9537       "    aaaaa,  bbbbb,  ccccc,  ddddd,  eeeee,  ffffff, ggggg, hhhhhh,\n"
9538       "    iiiiii, jjjjjj, kkkkkk, aaaaa,  bbbbb,  ccccc,  ddddd, eeeee,\n"
9539       "    ffffff, ggggg,  hhhhhh, iiiiii, jjjjjj, kkkkkk,\n"
9540       "};",
9541       NoBinPacking);
9542 
9543   NoBinPacking.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
9544   EXPECT_EQ("static uint8 CddDp83848Reg[] = {\n"
9545             "    CDDDP83848_BMCR_REGISTER,\n"
9546             "    CDDDP83848_BMSR_REGISTER,\n"
9547             "    CDDDP83848_RBR_REGISTER};",
9548             format("static uint8 CddDp83848Reg[] = {CDDDP83848_BMCR_REGISTER,\n"
9549                    "                                CDDDP83848_BMSR_REGISTER,\n"
9550                    "                                CDDDP83848_RBR_REGISTER};",
9551                    NoBinPacking));
9552 
9553   // FIXME: The alignment of these trailing comments might be bad. Then again,
9554   // this might be utterly useless in real code.
9555   verifyFormat("Constructor::Constructor()\n"
9556                "    : some_value{         //\n"
9557                "                 aaaaaaa, //\n"
9558                "                 bbbbbbb} {}");
9559 
9560   // In braced lists, the first comment is always assumed to belong to the
9561   // first element. Thus, it can be moved to the next or previous line as
9562   // appropriate.
9563   EXPECT_EQ("function({// First element:\n"
9564             "          1,\n"
9565             "          // Second element:\n"
9566             "          2});",
9567             format("function({\n"
9568                    "    // First element:\n"
9569                    "    1,\n"
9570                    "    // Second element:\n"
9571                    "    2});"));
9572   EXPECT_EQ("std::vector<int> MyNumbers{\n"
9573             "    // First element:\n"
9574             "    1,\n"
9575             "    // Second element:\n"
9576             "    2};",
9577             format("std::vector<int> MyNumbers{// First element:\n"
9578                    "                           1,\n"
9579                    "                           // Second element:\n"
9580                    "                           2};",
9581                    getLLVMStyleWithColumns(30)));
9582   // A trailing comma should still lead to an enforced line break and no
9583   // binpacking.
9584   EXPECT_EQ("vector<int> SomeVector = {\n"
9585             "    // aaa\n"
9586             "    1,\n"
9587             "    2,\n"
9588             "};",
9589             format("vector<int> SomeVector = { // aaa\n"
9590                    "    1, 2, };"));
9591 
9592   // C++11 brace initializer list l-braces should not be treated any differently
9593   // when breaking before lambda bodies is enabled
9594   FormatStyle BreakBeforeLambdaBody = getLLVMStyle();
9595   BreakBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
9596   BreakBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
9597   BreakBeforeLambdaBody.AlwaysBreakBeforeMultilineStrings = true;
9598   verifyFormat(
9599       "std::runtime_error{\n"
9600       "    \"Long string which will force a break onto the next line...\"};",
9601       BreakBeforeLambdaBody);
9602 
9603   FormatStyle ExtraSpaces = getLLVMStyle();
9604   ExtraSpaces.Cpp11BracedListStyle = false;
9605   ExtraSpaces.ColumnLimit = 75;
9606   verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces);
9607   verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces);
9608   verifyFormat("f({ 1, 2 });", ExtraSpaces);
9609   verifyFormat("auto v = Foo{ 1 };", ExtraSpaces);
9610   verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces);
9611   verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces);
9612   verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces);
9613   verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces);
9614   verifyFormat("return { arg1, arg2 };", ExtraSpaces);
9615   verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces);
9616   verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces);
9617   verifyFormat("new T{ arg1, arg2 };", ExtraSpaces);
9618   verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces);
9619   verifyFormat("class Class {\n"
9620                "  T member = { arg1, arg2 };\n"
9621                "};",
9622                ExtraSpaces);
9623   verifyFormat(
9624       "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9625       "                                 aaaaaaaaaaaaaaaaaaaa, aaaaa }\n"
9626       "                  : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
9627       "                                 bbbbbbbbbbbbbbbbbbbb, bbbbb };",
9628       ExtraSpaces);
9629   verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces);
9630   verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });",
9631                ExtraSpaces);
9632   verifyFormat(
9633       "someFunction(OtherParam,\n"
9634       "             BracedList{ // comment 1 (Forcing interesting break)\n"
9635       "                         param1, param2,\n"
9636       "                         // comment 2\n"
9637       "                         param3, param4 });",
9638       ExtraSpaces);
9639   verifyFormat(
9640       "std::this_thread::sleep_for(\n"
9641       "    std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);",
9642       ExtraSpaces);
9643   verifyFormat("std::vector<MyValues> aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa{\n"
9644                "    aaaaaaa,\n"
9645                "    aaaaaaaaaa,\n"
9646                "    aaaaa,\n"
9647                "    aaaaaaaaaaaaaaa,\n"
9648                "    aaa,\n"
9649                "    aaaaaaaaaa,\n"
9650                "    a,\n"
9651                "    aaaaaaaaaaaaaaaaaaaaa,\n"
9652                "    aaaaaaaaaaaa,\n"
9653                "    aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa,\n"
9654                "    aaaaaaa,\n"
9655                "    a};");
9656   verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces);
9657   verifyFormat("const struct A a = { .a = 1, .b = 2 };", ExtraSpaces);
9658   verifyFormat("const struct A a = { [0] = 1, [1] = 2 };", ExtraSpaces);
9659 
9660   // Avoid breaking between initializer/equal sign and opening brace
9661   ExtraSpaces.PenaltyBreakBeforeFirstCallParameter = 200;
9662   verifyFormat("const std::unordered_map<std::string, int> MyHashTable = {\n"
9663                "  { \"aaaaaaaaaaaaaaaaaaaaa\", 0 },\n"
9664                "  { \"bbbbbbbbbbbbbbbbbbbbb\", 1 },\n"
9665                "  { \"ccccccccccccccccccccc\", 2 }\n"
9666                "};",
9667                ExtraSpaces);
9668   verifyFormat("const std::unordered_map<std::string, int> MyHashTable{\n"
9669                "  { \"aaaaaaaaaaaaaaaaaaaaa\", 0 },\n"
9670                "  { \"bbbbbbbbbbbbbbbbbbbbb\", 1 },\n"
9671                "  { \"ccccccccccccccccccccc\", 2 }\n"
9672                "};",
9673                ExtraSpaces);
9674 
9675   FormatStyle SpaceBeforeBrace = getLLVMStyle();
9676   SpaceBeforeBrace.SpaceBeforeCpp11BracedList = true;
9677   verifyFormat("vector<int> x {1, 2, 3, 4};", SpaceBeforeBrace);
9678   verifyFormat("f({}, {{}, {}}, MyMap[{k, v}]);", SpaceBeforeBrace);
9679 
9680   FormatStyle SpaceBetweenBraces = getLLVMStyle();
9681   SpaceBetweenBraces.SpacesInAngles = true;
9682   SpaceBetweenBraces.SpacesInParentheses = true;
9683   SpaceBetweenBraces.SpacesInSquareBrackets = true;
9684   verifyFormat("vector< int > x{ 1, 2, 3, 4 };", SpaceBetweenBraces);
9685   verifyFormat("f( {}, { {}, {} }, MyMap[ { k, v } ] );", SpaceBetweenBraces);
9686   verifyFormat("vector< int > x{ // comment 1\n"
9687                "                 1, 2, 3, 4 };",
9688                SpaceBetweenBraces);
9689   SpaceBetweenBraces.ColumnLimit = 20;
9690   EXPECT_EQ("vector< int > x{\n"
9691             "    1, 2, 3, 4 };",
9692             format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
9693   SpaceBetweenBraces.ColumnLimit = 24;
9694   EXPECT_EQ("vector< int > x{ 1, 2,\n"
9695             "                 3, 4 };",
9696             format("vector<int>x{1,2,3,4};", SpaceBetweenBraces));
9697   EXPECT_EQ("vector< int > x{\n"
9698             "    1,\n"
9699             "    2,\n"
9700             "    3,\n"
9701             "    4,\n"
9702             "};",
9703             format("vector<int>x{1,2,3,4,};", SpaceBetweenBraces));
9704   verifyFormat("vector< int > x{};", SpaceBetweenBraces);
9705   SpaceBetweenBraces.SpaceInEmptyParentheses = true;
9706   verifyFormat("vector< int > x{ };", SpaceBetweenBraces);
9707 }
9708 
9709 TEST_F(FormatTest, FormatSpacesInAngles) {
9710   FormatStyle SpaceInAngles = getLLVMStyle();
9711   SpaceInAngles.SpacesInAngles = true;
9712   verifyFormat("vector< ::std::string > x1;", SpaceInAngles);
9713   verifyFormat("Foo< int, Bar > x2;", SpaceInAngles);
9714   verifyFormat("Foo< ::int, ::Bar > x3;", SpaceInAngles);
9715 
9716   SpaceInAngles.SpacesInAngles = false;
9717   verifyFormat("vector<::std::string> x4;", SpaceInAngles);
9718   verifyFormat("vector<int> x5;", SpaceInAngles);
9719   verifyFormat("Foo<int, Bar> x6;", SpaceInAngles);
9720   verifyFormat("Foo<::int, ::Bar> x7;", SpaceInAngles);
9721 }
9722 
9723 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) {
9724   verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9725                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9726                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9727                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9728                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9729                "                 1, 22, 333, 4444, 55555, 666666, 7777777};");
9730   verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777, //\n"
9731                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9732                "                 1, 22, 333, 4444, 55555, //\n"
9733                "                 1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9734                "                 1, 22, 333, 4444, 55555, 666666, 7777777};");
9735   verifyFormat(
9736       "vector<int> x = {1,       22, 333, 4444, 55555, 666666, 7777777,\n"
9737       "                 1,       22, 333, 4444, 55555, 666666, 7777777,\n"
9738       "                 1,       22, 333, 4444, 55555, 666666, // comment\n"
9739       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
9740       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
9741       "                 7777777, 1,  22,  333,  4444,  55555,  666666,\n"
9742       "                 7777777};");
9743   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
9744                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
9745                "    X86::R8,  X86::R9,  X86::R10, X86::R11, 0};");
9746   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
9747                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
9748                "    // Separating comment.\n"
9749                "    X86::R8, X86::R9, X86::R10, X86::R11, 0};");
9750   verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n"
9751                "    // Leading comment\n"
9752                "    X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n"
9753                "    X86::R8,  X86::R9,  X86::R10, X86::R11, 0};");
9754   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
9755                "                 1, 1, 1, 1};",
9756                getLLVMStyleWithColumns(39));
9757   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
9758                "                 1, 1, 1, 1};",
9759                getLLVMStyleWithColumns(38));
9760   verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n"
9761                "    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};",
9762                getLLVMStyleWithColumns(43));
9763   verifyFormat(
9764       "static unsigned SomeValues[10][3] = {\n"
9765       "    {1, 4, 0},  {4, 9, 0},  {4, 5, 9},  {8, 5, 4}, {1, 8, 4},\n"
9766       "    {10, 1, 6}, {11, 0, 9}, {2, 11, 9}, {5, 2, 9}, {11, 2, 7}};");
9767   verifyFormat("static auto fields = new vector<string>{\n"
9768                "    \"aaaaaaaaaaaaa\",\n"
9769                "    \"aaaaaaaaaaaaa\",\n"
9770                "    \"aaaaaaaaaaaa\",\n"
9771                "    \"aaaaaaaaaaaaaa\",\n"
9772                "    \"aaaaaaaaaaaaaaaaaaaaaaaaa\",\n"
9773                "    \"aaaaaaaaaaaa\",\n"
9774                "    \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\n"
9775                "};");
9776   verifyFormat("vector<int> x = {1, 2, 3, 4, aaaaaaaaaaaaaaaaa, 6};");
9777   verifyFormat("vector<int> x = {1, aaaaaaaaaaaaaaaaaaaaaa,\n"
9778                "                 2, bbbbbbbbbbbbbbbbbbbbbb,\n"
9779                "                 3, cccccccccccccccccccccc};",
9780                getLLVMStyleWithColumns(60));
9781 
9782   // Trailing commas.
9783   verifyFormat("vector<int> x = {\n"
9784                "    1, 1, 1, 1, 1, 1, 1, 1,\n"
9785                "};",
9786                getLLVMStyleWithColumns(39));
9787   verifyFormat("vector<int> x = {\n"
9788                "    1, 1, 1, 1, 1, 1, 1, 1, //\n"
9789                "};",
9790                getLLVMStyleWithColumns(39));
9791   verifyFormat("vector<int> x = {1, 1, 1, 1,\n"
9792                "                 1, 1, 1, 1,\n"
9793                "                 /**/ /**/};",
9794                getLLVMStyleWithColumns(39));
9795 
9796   // Trailing comment in the first line.
9797   verifyFormat("vector<int> iiiiiiiiiiiiiii = {                      //\n"
9798                "    1111111111, 2222222222, 33333333333, 4444444444, //\n"
9799                "    111111111,  222222222,  3333333333,  444444444,  //\n"
9800                "    11111111,   22222222,   333333333,   44444444};");
9801   // Trailing comment in the last line.
9802   verifyFormat("int aaaaa[] = {\n"
9803                "    1, 2, 3, // comment\n"
9804                "    4, 5, 6  // comment\n"
9805                "};");
9806 
9807   // With nested lists, we should either format one item per line or all nested
9808   // lists one on line.
9809   // FIXME: For some nested lists, we can do better.
9810   verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n"
9811                "        {aaaaaaaaaaaaaaaaaaa},\n"
9812                "        {aaaaaaaaaaaaaaaaaaaaa},\n"
9813                "        {aaaaaaaaaaaaaaaaa}};",
9814                getLLVMStyleWithColumns(60));
9815   verifyFormat(
9816       "SomeStruct my_struct_array = {\n"
9817       "    {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n"
9818       "     aaaaaaaaaaaaa, aaaaaaa, aaa},\n"
9819       "    {aaa, aaa},\n"
9820       "    {aaa, aaa},\n"
9821       "    {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n"
9822       "    {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n"
9823       "     aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};");
9824 
9825   // No column layout should be used here.
9826   verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n"
9827                "                   bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};");
9828 
9829   verifyNoCrash("a<,");
9830 
9831   // No braced initializer here.
9832   verifyFormat("void f() {\n"
9833                "  struct Dummy {};\n"
9834                "  f(v);\n"
9835                "}");
9836 
9837   // Long lists should be formatted in columns even if they are nested.
9838   verifyFormat(
9839       "vector<int> x = function({1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9840       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9841       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9842       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9843       "                          1, 22, 333, 4444, 55555, 666666, 7777777,\n"
9844       "                          1, 22, 333, 4444, 55555, 666666, 7777777});");
9845 
9846   // Allow "single-column" layout even if that violates the column limit. There
9847   // isn't going to be a better way.
9848   verifyFormat("std::vector<int> a = {\n"
9849                "    aaaaaaaa,\n"
9850                "    aaaaaaaa,\n"
9851                "    aaaaaaaa,\n"
9852                "    aaaaaaaa,\n"
9853                "    aaaaaaaaaa,\n"
9854                "    aaaaaaaa,\n"
9855                "    aaaaaaaaaaaaaaaaaaaaaaaaaaa};",
9856                getLLVMStyleWithColumns(30));
9857   verifyFormat("vector<int> aaaa = {\n"
9858                "    aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9859                "    aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
9860                "    aaaaaa.aaaaaaa,\n"
9861                "    aaaaaa.aaaaaaa,\n"
9862                "    aaaaaa.aaaaaaa,\n"
9863                "    aaaaaa.aaaaaaa,\n"
9864                "};");
9865 
9866   // Don't create hanging lists.
9867   verifyFormat("someFunction(Param, {List1, List2,\n"
9868                "                     List3});",
9869                getLLVMStyleWithColumns(35));
9870   verifyFormat("someFunction(Param, Param,\n"
9871                "             {List1, List2,\n"
9872                "              List3});",
9873                getLLVMStyleWithColumns(35));
9874   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa, {},\n"
9875                "                               aaaaaaaaaaaaaaaaaaaaaaa);");
9876 }
9877 
9878 TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
9879   FormatStyle DoNotMerge = getLLVMStyle();
9880   DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
9881 
9882   verifyFormat("void f() { return 42; }");
9883   verifyFormat("void f() {\n"
9884                "  return 42;\n"
9885                "}",
9886                DoNotMerge);
9887   verifyFormat("void f() {\n"
9888                "  // Comment\n"
9889                "}");
9890   verifyFormat("{\n"
9891                "#error {\n"
9892                "  int a;\n"
9893                "}");
9894   verifyFormat("{\n"
9895                "  int a;\n"
9896                "#error {\n"
9897                "}");
9898   verifyFormat("void f() {} // comment");
9899   verifyFormat("void f() { int a; } // comment");
9900   verifyFormat("void f() {\n"
9901                "} // comment",
9902                DoNotMerge);
9903   verifyFormat("void f() {\n"
9904                "  int a;\n"
9905                "} // comment",
9906                DoNotMerge);
9907   verifyFormat("void f() {\n"
9908                "} // comment",
9909                getLLVMStyleWithColumns(15));
9910 
9911   verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
9912   verifyFormat("void f() {\n  return 42;\n}", getLLVMStyleWithColumns(22));
9913 
9914   verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
9915   verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
9916   verifyFormat("class C {\n"
9917                "  C()\n"
9918                "      : iiiiiiii(nullptr),\n"
9919                "        kkkkkkk(nullptr),\n"
9920                "        mmmmmmm(nullptr),\n"
9921                "        nnnnnnn(nullptr) {}\n"
9922                "};",
9923                getGoogleStyle());
9924 
9925   FormatStyle NoColumnLimit = getLLVMStyle();
9926   NoColumnLimit.ColumnLimit = 0;
9927   EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit));
9928   EXPECT_EQ("class C {\n"
9929             "  A() : b(0) {}\n"
9930             "};",
9931             format("class C{A():b(0){}};", NoColumnLimit));
9932   EXPECT_EQ("A()\n"
9933             "    : b(0) {\n"
9934             "}",
9935             format("A()\n:b(0)\n{\n}", NoColumnLimit));
9936 
9937   FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit;
9938   DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine =
9939       FormatStyle::SFS_None;
9940   EXPECT_EQ("A()\n"
9941             "    : b(0) {\n"
9942             "}",
9943             format("A():b(0){}", DoNotMergeNoColumnLimit));
9944   EXPECT_EQ("A()\n"
9945             "    : b(0) {\n"
9946             "}",
9947             format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit));
9948 
9949   verifyFormat("#define A          \\\n"
9950                "  void f() {       \\\n"
9951                "    int i;         \\\n"
9952                "  }",
9953                getLLVMStyleWithColumns(20));
9954   verifyFormat("#define A           \\\n"
9955                "  void f() { int i; }",
9956                getLLVMStyleWithColumns(21));
9957   verifyFormat("#define A            \\\n"
9958                "  void f() {         \\\n"
9959                "    int i;           \\\n"
9960                "  }                  \\\n"
9961                "  int j;",
9962                getLLVMStyleWithColumns(22));
9963   verifyFormat("#define A             \\\n"
9964                "  void f() { int i; } \\\n"
9965                "  int j;",
9966                getLLVMStyleWithColumns(23));
9967 }
9968 
9969 TEST_F(FormatTest, PullEmptyFunctionDefinitionsIntoSingleLine) {
9970   FormatStyle MergeEmptyOnly = getLLVMStyle();
9971   MergeEmptyOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
9972   verifyFormat("class C {\n"
9973                "  int f() {}\n"
9974                "};",
9975                MergeEmptyOnly);
9976   verifyFormat("class C {\n"
9977                "  int f() {\n"
9978                "    return 42;\n"
9979                "  }\n"
9980                "};",
9981                MergeEmptyOnly);
9982   verifyFormat("int f() {}", MergeEmptyOnly);
9983   verifyFormat("int f() {\n"
9984                "  return 42;\n"
9985                "}",
9986                MergeEmptyOnly);
9987 
9988   // Also verify behavior when BraceWrapping.AfterFunction = true
9989   MergeEmptyOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
9990   MergeEmptyOnly.BraceWrapping.AfterFunction = true;
9991   verifyFormat("int f() {}", MergeEmptyOnly);
9992   verifyFormat("class C {\n"
9993                "  int f() {}\n"
9994                "};",
9995                MergeEmptyOnly);
9996 }
9997 
9998 TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) {
9999   FormatStyle MergeInlineOnly = getLLVMStyle();
10000   MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
10001   verifyFormat("class C {\n"
10002                "  int f() { return 42; }\n"
10003                "};",
10004                MergeInlineOnly);
10005   verifyFormat("int f() {\n"
10006                "  return 42;\n"
10007                "}",
10008                MergeInlineOnly);
10009 
10010   // SFS_Inline implies SFS_Empty
10011   verifyFormat("class C {\n"
10012                "  int f() {}\n"
10013                "};",
10014                MergeInlineOnly);
10015   verifyFormat("int f() {}", MergeInlineOnly);
10016 
10017   // Also verify behavior when BraceWrapping.AfterFunction = true
10018   MergeInlineOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
10019   MergeInlineOnly.BraceWrapping.AfterFunction = true;
10020   verifyFormat("class C {\n"
10021                "  int f() { return 42; }\n"
10022                "};",
10023                MergeInlineOnly);
10024   verifyFormat("int f()\n"
10025                "{\n"
10026                "  return 42;\n"
10027                "}",
10028                MergeInlineOnly);
10029 
10030   // SFS_Inline implies SFS_Empty
10031   verifyFormat("int f() {}", MergeInlineOnly);
10032   verifyFormat("class C {\n"
10033                "  int f() {}\n"
10034                "};",
10035                MergeInlineOnly);
10036 }
10037 
10038 TEST_F(FormatTest, PullInlineOnlyFunctionDefinitionsIntoSingleLine) {
10039   FormatStyle MergeInlineOnly = getLLVMStyle();
10040   MergeInlineOnly.AllowShortFunctionsOnASingleLine =
10041       FormatStyle::SFS_InlineOnly;
10042   verifyFormat("class C {\n"
10043                "  int f() { return 42; }\n"
10044                "};",
10045                MergeInlineOnly);
10046   verifyFormat("int f() {\n"
10047                "  return 42;\n"
10048                "}",
10049                MergeInlineOnly);
10050 
10051   // SFS_InlineOnly does not imply SFS_Empty
10052   verifyFormat("class C {\n"
10053                "  int f() {}\n"
10054                "};",
10055                MergeInlineOnly);
10056   verifyFormat("int f() {\n"
10057                "}",
10058                MergeInlineOnly);
10059 
10060   // Also verify behavior when BraceWrapping.AfterFunction = true
10061   MergeInlineOnly.BreakBeforeBraces = FormatStyle::BS_Custom;
10062   MergeInlineOnly.BraceWrapping.AfterFunction = true;
10063   verifyFormat("class C {\n"
10064                "  int f() { return 42; }\n"
10065                "};",
10066                MergeInlineOnly);
10067   verifyFormat("int f()\n"
10068                "{\n"
10069                "  return 42;\n"
10070                "}",
10071                MergeInlineOnly);
10072 
10073   // SFS_InlineOnly does not imply SFS_Empty
10074   verifyFormat("int f()\n"
10075                "{\n"
10076                "}",
10077                MergeInlineOnly);
10078   verifyFormat("class C {\n"
10079                "  int f() {}\n"
10080                "};",
10081                MergeInlineOnly);
10082 }
10083 
10084 TEST_F(FormatTest, SplitEmptyFunction) {
10085   FormatStyle Style = getLLVMStyle();
10086   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
10087   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
10088   Style.BraceWrapping.AfterFunction = true;
10089   Style.BraceWrapping.SplitEmptyFunction = false;
10090   Style.ColumnLimit = 40;
10091 
10092   verifyFormat("int f()\n"
10093                "{}",
10094                Style);
10095   verifyFormat("int f()\n"
10096                "{\n"
10097                "  return 42;\n"
10098                "}",
10099                Style);
10100   verifyFormat("int f()\n"
10101                "{\n"
10102                "  // some comment\n"
10103                "}",
10104                Style);
10105 
10106   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty;
10107   verifyFormat("int f() {}", Style);
10108   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
10109                "{}",
10110                Style);
10111   verifyFormat("int f()\n"
10112                "{\n"
10113                "  return 0;\n"
10114                "}",
10115                Style);
10116 
10117   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
10118   verifyFormat("class Foo {\n"
10119                "  int f() {}\n"
10120                "};\n",
10121                Style);
10122   verifyFormat("class Foo {\n"
10123                "  int f() { return 0; }\n"
10124                "};\n",
10125                Style);
10126   verifyFormat("class Foo {\n"
10127                "  int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
10128                "  {}\n"
10129                "};\n",
10130                Style);
10131   verifyFormat("class Foo {\n"
10132                "  int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
10133                "  {\n"
10134                "    return 0;\n"
10135                "  }\n"
10136                "};\n",
10137                Style);
10138 
10139   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
10140   verifyFormat("int f() {}", Style);
10141   verifyFormat("int f() { return 0; }", Style);
10142   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
10143                "{}",
10144                Style);
10145   verifyFormat("int aaaaaaaaaaaaaa(int bbbbbbbbbbbbbb)\n"
10146                "{\n"
10147                "  return 0;\n"
10148                "}",
10149                Style);
10150 }
10151 TEST_F(FormatTest, KeepShortFunctionAfterPPElse) {
10152   FormatStyle Style = getLLVMStyle();
10153   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
10154   verifyFormat("#ifdef A\n"
10155                "int f() {}\n"
10156                "#else\n"
10157                "int g() {}\n"
10158                "#endif",
10159                Style);
10160 }
10161 
10162 TEST_F(FormatTest, SplitEmptyClass) {
10163   FormatStyle Style = getLLVMStyle();
10164   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
10165   Style.BraceWrapping.AfterClass = true;
10166   Style.BraceWrapping.SplitEmptyRecord = false;
10167 
10168   verifyFormat("class Foo\n"
10169                "{};",
10170                Style);
10171   verifyFormat("/* something */ class Foo\n"
10172                "{};",
10173                Style);
10174   verifyFormat("template <typename X> class Foo\n"
10175                "{};",
10176                Style);
10177   verifyFormat("class Foo\n"
10178                "{\n"
10179                "  Foo();\n"
10180                "};",
10181                Style);
10182   verifyFormat("typedef class Foo\n"
10183                "{\n"
10184                "} Foo_t;",
10185                Style);
10186 
10187   Style.BraceWrapping.SplitEmptyRecord = true;
10188   Style.BraceWrapping.AfterStruct = true;
10189   verifyFormat("class rep\n"
10190                "{\n"
10191                "};",
10192                Style);
10193   verifyFormat("struct rep\n"
10194                "{\n"
10195                "};",
10196                Style);
10197   verifyFormat("template <typename T> class rep\n"
10198                "{\n"
10199                "};",
10200                Style);
10201   verifyFormat("template <typename T> struct rep\n"
10202                "{\n"
10203                "};",
10204                Style);
10205   verifyFormat("class rep\n"
10206                "{\n"
10207                "  int x;\n"
10208                "};",
10209                Style);
10210   verifyFormat("struct rep\n"
10211                "{\n"
10212                "  int x;\n"
10213                "};",
10214                Style);
10215   verifyFormat("template <typename T> class rep\n"
10216                "{\n"
10217                "  int x;\n"
10218                "};",
10219                Style);
10220   verifyFormat("template <typename T> struct rep\n"
10221                "{\n"
10222                "  int x;\n"
10223                "};",
10224                Style);
10225   verifyFormat("template <typename T> class rep // Foo\n"
10226                "{\n"
10227                "  int x;\n"
10228                "};",
10229                Style);
10230   verifyFormat("template <typename T> struct rep // Bar\n"
10231                "{\n"
10232                "  int x;\n"
10233                "};",
10234                Style);
10235 
10236   verifyFormat("template <typename T> class rep<T>\n"
10237                "{\n"
10238                "  int x;\n"
10239                "};",
10240                Style);
10241 
10242   verifyFormat("template <typename T> class rep<std::complex<T>>\n"
10243                "{\n"
10244                "  int x;\n"
10245                "};",
10246                Style);
10247   verifyFormat("template <typename T> class rep<std::complex<T>>\n"
10248                "{\n"
10249                "};",
10250                Style);
10251 
10252   verifyFormat("#include \"stdint.h\"\n"
10253                "namespace rep {}",
10254                Style);
10255   verifyFormat("#include <stdint.h>\n"
10256                "namespace rep {}",
10257                Style);
10258   verifyFormat("#include <stdint.h>\n"
10259                "namespace rep {}",
10260                "#include <stdint.h>\n"
10261                "namespace rep {\n"
10262                "\n"
10263                "\n"
10264                "}",
10265                Style);
10266 }
10267 
10268 TEST_F(FormatTest, SplitEmptyStruct) {
10269   FormatStyle Style = getLLVMStyle();
10270   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
10271   Style.BraceWrapping.AfterStruct = true;
10272   Style.BraceWrapping.SplitEmptyRecord = false;
10273 
10274   verifyFormat("struct Foo\n"
10275                "{};",
10276                Style);
10277   verifyFormat("/* something */ struct Foo\n"
10278                "{};",
10279                Style);
10280   verifyFormat("template <typename X> struct Foo\n"
10281                "{};",
10282                Style);
10283   verifyFormat("struct Foo\n"
10284                "{\n"
10285                "  Foo();\n"
10286                "};",
10287                Style);
10288   verifyFormat("typedef struct Foo\n"
10289                "{\n"
10290                "} Foo_t;",
10291                Style);
10292   // typedef struct Bar {} Bar_t;
10293 }
10294 
10295 TEST_F(FormatTest, SplitEmptyUnion) {
10296   FormatStyle Style = getLLVMStyle();
10297   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
10298   Style.BraceWrapping.AfterUnion = true;
10299   Style.BraceWrapping.SplitEmptyRecord = false;
10300 
10301   verifyFormat("union Foo\n"
10302                "{};",
10303                Style);
10304   verifyFormat("/* something */ union Foo\n"
10305                "{};",
10306                Style);
10307   verifyFormat("union Foo\n"
10308                "{\n"
10309                "  A,\n"
10310                "};",
10311                Style);
10312   verifyFormat("typedef union Foo\n"
10313                "{\n"
10314                "} Foo_t;",
10315                Style);
10316 }
10317 
10318 TEST_F(FormatTest, SplitEmptyNamespace) {
10319   FormatStyle Style = getLLVMStyle();
10320   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
10321   Style.BraceWrapping.AfterNamespace = true;
10322   Style.BraceWrapping.SplitEmptyNamespace = false;
10323 
10324   verifyFormat("namespace Foo\n"
10325                "{};",
10326                Style);
10327   verifyFormat("/* something */ namespace Foo\n"
10328                "{};",
10329                Style);
10330   verifyFormat("inline namespace Foo\n"
10331                "{};",
10332                Style);
10333   verifyFormat("/* something */ inline namespace Foo\n"
10334                "{};",
10335                Style);
10336   verifyFormat("export namespace Foo\n"
10337                "{};",
10338                Style);
10339   verifyFormat("namespace Foo\n"
10340                "{\n"
10341                "void Bar();\n"
10342                "};",
10343                Style);
10344 }
10345 
10346 TEST_F(FormatTest, NeverMergeShortRecords) {
10347   FormatStyle Style = getLLVMStyle();
10348 
10349   verifyFormat("class Foo {\n"
10350                "  Foo();\n"
10351                "};",
10352                Style);
10353   verifyFormat("typedef class Foo {\n"
10354                "  Foo();\n"
10355                "} Foo_t;",
10356                Style);
10357   verifyFormat("struct Foo {\n"
10358                "  Foo();\n"
10359                "};",
10360                Style);
10361   verifyFormat("typedef struct Foo {\n"
10362                "  Foo();\n"
10363                "} Foo_t;",
10364                Style);
10365   verifyFormat("union Foo {\n"
10366                "  A,\n"
10367                "};",
10368                Style);
10369   verifyFormat("typedef union Foo {\n"
10370                "  A,\n"
10371                "} Foo_t;",
10372                Style);
10373   verifyFormat("namespace Foo {\n"
10374                "void Bar();\n"
10375                "};",
10376                Style);
10377 
10378   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
10379   Style.BraceWrapping.AfterClass = true;
10380   Style.BraceWrapping.AfterStruct = true;
10381   Style.BraceWrapping.AfterUnion = true;
10382   Style.BraceWrapping.AfterNamespace = true;
10383   verifyFormat("class Foo\n"
10384                "{\n"
10385                "  Foo();\n"
10386                "};",
10387                Style);
10388   verifyFormat("typedef class Foo\n"
10389                "{\n"
10390                "  Foo();\n"
10391                "} Foo_t;",
10392                Style);
10393   verifyFormat("struct Foo\n"
10394                "{\n"
10395                "  Foo();\n"
10396                "};",
10397                Style);
10398   verifyFormat("typedef struct Foo\n"
10399                "{\n"
10400                "  Foo();\n"
10401                "} Foo_t;",
10402                Style);
10403   verifyFormat("union Foo\n"
10404                "{\n"
10405                "  A,\n"
10406                "};",
10407                Style);
10408   verifyFormat("typedef union Foo\n"
10409                "{\n"
10410                "  A,\n"
10411                "} Foo_t;",
10412                Style);
10413   verifyFormat("namespace Foo\n"
10414                "{\n"
10415                "void Bar();\n"
10416                "};",
10417                Style);
10418 }
10419 
10420 TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
10421   // Elaborate type variable declarations.
10422   verifyFormat("struct foo a = {bar};\nint n;");
10423   verifyFormat("class foo a = {bar};\nint n;");
10424   verifyFormat("union foo a = {bar};\nint n;");
10425 
10426   // Elaborate types inside function definitions.
10427   verifyFormat("struct foo f() {}\nint n;");
10428   verifyFormat("class foo f() {}\nint n;");
10429   verifyFormat("union foo f() {}\nint n;");
10430 
10431   // Templates.
10432   verifyFormat("template <class X> void f() {}\nint n;");
10433   verifyFormat("template <struct X> void f() {}\nint n;");
10434   verifyFormat("template <union X> void f() {}\nint n;");
10435 
10436   // Actual definitions...
10437   verifyFormat("struct {\n} n;");
10438   verifyFormat(
10439       "template <template <class T, class Y>, class Z> class X {\n} n;");
10440   verifyFormat("union Z {\n  int n;\n} x;");
10441   verifyFormat("class MACRO Z {\n} n;");
10442   verifyFormat("class MACRO(X) Z {\n} n;");
10443   verifyFormat("class __attribute__(X) Z {\n} n;");
10444   verifyFormat("class __declspec(X) Z {\n} n;");
10445   verifyFormat("class A##B##C {\n} n;");
10446   verifyFormat("class alignas(16) Z {\n} n;");
10447   verifyFormat("class MACRO(X) alignas(16) Z {\n} n;");
10448   verifyFormat("class MACROA MACRO(X) Z {\n} n;");
10449 
10450   // Redefinition from nested context:
10451   verifyFormat("class A::B::C {\n} n;");
10452 
10453   // Template definitions.
10454   verifyFormat(
10455       "template <typename F>\n"
10456       "Matcher(const Matcher<F> &Other,\n"
10457       "        typename enable_if_c<is_base_of<F, T>::value &&\n"
10458       "                             !is_same<F, T>::value>::type * = 0)\n"
10459       "    : Implementation(new ImplicitCastMatcher<F>(Other)) {}");
10460 
10461   // FIXME: This is still incorrectly handled at the formatter side.
10462   verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};");
10463   verifyFormat("int i = SomeFunction(a<b, a> b);");
10464 
10465   // FIXME:
10466   // This now gets parsed incorrectly as class definition.
10467   // verifyFormat("class A<int> f() {\n}\nint n;");
10468 
10469   // Elaborate types where incorrectly parsing the structural element would
10470   // break the indent.
10471   verifyFormat("if (true)\n"
10472                "  class X x;\n"
10473                "else\n"
10474                "  f();\n");
10475 
10476   // This is simply incomplete. Formatting is not important, but must not crash.
10477   verifyFormat("class A:");
10478 }
10479 
10480 TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
10481   EXPECT_EQ("#error Leave     all         white!!!!! space* alone!\n",
10482             format("#error Leave     all         white!!!!! space* alone!\n"));
10483   EXPECT_EQ(
10484       "#warning Leave     all         white!!!!! space* alone!\n",
10485       format("#warning Leave     all         white!!!!! space* alone!\n"));
10486   EXPECT_EQ("#error 1", format("  #  error   1"));
10487   EXPECT_EQ("#warning 1", format("  #  warning 1"));
10488 }
10489 
10490 TEST_F(FormatTest, FormatHashIfExpressions) {
10491   verifyFormat("#if AAAA && BBBB");
10492   verifyFormat("#if (AAAA && BBBB)");
10493   verifyFormat("#elif (AAAA && BBBB)");
10494   // FIXME: Come up with a better indentation for #elif.
10495   verifyFormat(
10496       "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) &&  \\\n"
10497       "    defined(BBBBBBBB)\n"
10498       "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) &&  \\\n"
10499       "    defined(BBBBBBBB)\n"
10500       "#endif",
10501       getLLVMStyleWithColumns(65));
10502 }
10503 
10504 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
10505   FormatStyle AllowsMergedIf = getGoogleStyle();
10506   AllowsMergedIf.AllowShortIfStatementsOnASingleLine =
10507       FormatStyle::SIS_WithoutElse;
10508   verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
10509   verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
10510   verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
10511   EXPECT_EQ("if (true) return 42;",
10512             format("if (true)\nreturn 42;", AllowsMergedIf));
10513   FormatStyle ShortMergedIf = AllowsMergedIf;
10514   ShortMergedIf.ColumnLimit = 25;
10515   verifyFormat("#define A \\\n"
10516                "  if (true) return 42;",
10517                ShortMergedIf);
10518   verifyFormat("#define A \\\n"
10519                "  f();    \\\n"
10520                "  if (true)\n"
10521                "#define B",
10522                ShortMergedIf);
10523   verifyFormat("#define A \\\n"
10524                "  f();    \\\n"
10525                "  if (true)\n"
10526                "g();",
10527                ShortMergedIf);
10528   verifyFormat("{\n"
10529                "#ifdef A\n"
10530                "  // Comment\n"
10531                "  if (true) continue;\n"
10532                "#endif\n"
10533                "  // Comment\n"
10534                "  if (true) continue;\n"
10535                "}",
10536                ShortMergedIf);
10537   ShortMergedIf.ColumnLimit = 33;
10538   verifyFormat("#define A \\\n"
10539                "  if constexpr (true) return 42;",
10540                ShortMergedIf);
10541   verifyFormat("#define A \\\n"
10542                "  if CONSTEXPR (true) return 42;",
10543                ShortMergedIf);
10544   ShortMergedIf.ColumnLimit = 29;
10545   verifyFormat("#define A                   \\\n"
10546                "  if (aaaaaaaaaa) return 1; \\\n"
10547                "  return 2;",
10548                ShortMergedIf);
10549   ShortMergedIf.ColumnLimit = 28;
10550   verifyFormat("#define A         \\\n"
10551                "  if (aaaaaaaaaa) \\\n"
10552                "    return 1;     \\\n"
10553                "  return 2;",
10554                ShortMergedIf);
10555   verifyFormat("#define A                \\\n"
10556                "  if constexpr (aaaaaaa) \\\n"
10557                "    return 1;            \\\n"
10558                "  return 2;",
10559                ShortMergedIf);
10560   verifyFormat("#define A                \\\n"
10561                "  if CONSTEXPR (aaaaaaa) \\\n"
10562                "    return 1;            \\\n"
10563                "  return 2;",
10564                ShortMergedIf);
10565 }
10566 
10567 TEST_F(FormatTest, FormatStarDependingOnContext) {
10568   verifyFormat("void f(int *a);");
10569   verifyFormat("void f() { f(fint * b); }");
10570   verifyFormat("class A {\n  void f(int *a);\n};");
10571   verifyFormat("class A {\n  int *a;\n};");
10572   verifyFormat("namespace a {\n"
10573                "namespace b {\n"
10574                "class A {\n"
10575                "  void f() {}\n"
10576                "  int *a;\n"
10577                "};\n"
10578                "} // namespace b\n"
10579                "} // namespace a");
10580 }
10581 
10582 TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
10583   verifyFormat("while");
10584   verifyFormat("operator");
10585 }
10586 
10587 TEST_F(FormatTest, SkipsDeeplyNestedLines) {
10588   // This code would be painfully slow to format if we didn't skip it.
10589   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
10590                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10591                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10592                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10593                    "A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(A(\n"
10594                    "A(1, 1)\n"
10595                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n" // 10x
10596                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10597                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10598                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10599                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10600                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10601                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10602                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10603                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1)\n"
10604                    ", 1), 1), 1), 1), 1), 1), 1), 1), 1), 1);\n");
10605   // Deeply nested part is untouched, rest is formatted.
10606   EXPECT_EQ(std::string("int i;\n") + Code + "int j;\n",
10607             format(std::string("int    i;\n") + Code + "int    j;\n",
10608                    getLLVMStyle(), SC_ExpectIncomplete));
10609 }
10610 
10611 //===----------------------------------------------------------------------===//
10612 // Objective-C tests.
10613 //===----------------------------------------------------------------------===//
10614 
10615 TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
10616   verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
10617   EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
10618             format("-(NSUInteger)indexOfObject:(id)anObject;"));
10619   EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
10620   EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
10621   EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
10622             format("-(NSInteger)Method3:(id)anObject;"));
10623   EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
10624             format("-(NSInteger)Method4:(id)anObject;"));
10625   EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
10626             format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
10627   EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
10628             format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
10629   EXPECT_EQ("- (void)sendAction:(SEL)aSelector to:(id)anObject "
10630             "forAllCells:(BOOL)flag;",
10631             format("- (void)sendAction:(SEL)aSelector to:(id)anObject "
10632                    "forAllCells:(BOOL)flag;"));
10633 
10634   // Very long objectiveC method declaration.
10635   verifyFormat("- (void)aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n"
10636                "    (SoooooooooooooooooooooomeType *)bbbbbbbbbb;");
10637   verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
10638                "                    inRange:(NSRange)range\n"
10639                "                   outRange:(NSRange)out_range\n"
10640                "                  outRange1:(NSRange)out_range1\n"
10641                "                  outRange2:(NSRange)out_range2\n"
10642                "                  outRange3:(NSRange)out_range3\n"
10643                "                  outRange4:(NSRange)out_range4\n"
10644                "                  outRange5:(NSRange)out_range5\n"
10645                "                  outRange6:(NSRange)out_range6\n"
10646                "                  outRange7:(NSRange)out_range7\n"
10647                "                  outRange8:(NSRange)out_range8\n"
10648                "                  outRange9:(NSRange)out_range9;");
10649 
10650   // When the function name has to be wrapped.
10651   FormatStyle Style = getLLVMStyle();
10652   // ObjC ignores IndentWrappedFunctionNames when wrapping methods
10653   // and always indents instead.
10654   Style.IndentWrappedFunctionNames = false;
10655   verifyFormat("- (SomeLooooooooooooooooooooongType *)\n"
10656                "    veryLooooooooooongName:(NSString)aaaaaaaaaaaaaa\n"
10657                "               anotherName:(NSString)bbbbbbbbbbbbbb {\n"
10658                "}",
10659                Style);
10660   Style.IndentWrappedFunctionNames = true;
10661   verifyFormat("- (SomeLooooooooooooooooooooongType *)\n"
10662                "    veryLooooooooooongName:(NSString)cccccccccccccc\n"
10663                "               anotherName:(NSString)dddddddddddddd {\n"
10664                "}",
10665                Style);
10666 
10667   verifyFormat("- (int)sum:(vector<int>)numbers;");
10668   verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
10669   // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
10670   // protocol lists (but not for template classes):
10671   // verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
10672 
10673   verifyFormat("- (int (*)())foo:(int (*)())f;");
10674   verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;");
10675 
10676   // If there's no return type (very rare in practice!), LLVM and Google style
10677   // agree.
10678   verifyFormat("- foo;");
10679   verifyFormat("- foo:(int)f;");
10680   verifyGoogleFormat("- foo:(int)foo;");
10681 }
10682 
10683 TEST_F(FormatTest, BreaksStringLiterals) {
10684   EXPECT_EQ("\"some text \"\n"
10685             "\"other\";",
10686             format("\"some text other\";", getLLVMStyleWithColumns(12)));
10687   EXPECT_EQ("\"some text \"\n"
10688             "\"other\";",
10689             format("\\\n\"some text other\";", getLLVMStyleWithColumns(12)));
10690   EXPECT_EQ(
10691       "#define A  \\\n"
10692       "  \"some \"  \\\n"
10693       "  \"text \"  \\\n"
10694       "  \"other\";",
10695       format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
10696   EXPECT_EQ(
10697       "#define A  \\\n"
10698       "  \"so \"    \\\n"
10699       "  \"text \"  \\\n"
10700       "  \"other\";",
10701       format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
10702 
10703   EXPECT_EQ("\"some text\"",
10704             format("\"some text\"", getLLVMStyleWithColumns(1)));
10705   EXPECT_EQ("\"some text\"",
10706             format("\"some text\"", getLLVMStyleWithColumns(11)));
10707   EXPECT_EQ("\"some \"\n"
10708             "\"text\"",
10709             format("\"some text\"", getLLVMStyleWithColumns(10)));
10710   EXPECT_EQ("\"some \"\n"
10711             "\"text\"",
10712             format("\"some text\"", getLLVMStyleWithColumns(7)));
10713   EXPECT_EQ("\"some\"\n"
10714             "\" tex\"\n"
10715             "\"t\"",
10716             format("\"some text\"", getLLVMStyleWithColumns(6)));
10717   EXPECT_EQ("\"some\"\n"
10718             "\" tex\"\n"
10719             "\" and\"",
10720             format("\"some tex and\"", getLLVMStyleWithColumns(6)));
10721   EXPECT_EQ("\"some\"\n"
10722             "\"/tex\"\n"
10723             "\"/and\"",
10724             format("\"some/tex/and\"", getLLVMStyleWithColumns(6)));
10725 
10726   EXPECT_EQ("variable =\n"
10727             "    \"long string \"\n"
10728             "    \"literal\";",
10729             format("variable = \"long string literal\";",
10730                    getLLVMStyleWithColumns(20)));
10731 
10732   EXPECT_EQ("variable = f(\n"
10733             "    \"long string \"\n"
10734             "    \"literal\",\n"
10735             "    short,\n"
10736             "    loooooooooooooooooooong);",
10737             format("variable = f(\"long string literal\", short, "
10738                    "loooooooooooooooooooong);",
10739                    getLLVMStyleWithColumns(20)));
10740 
10741   EXPECT_EQ(
10742       "f(g(\"long string \"\n"
10743       "    \"literal\"),\n"
10744       "  b);",
10745       format("f(g(\"long string literal\"), b);", getLLVMStyleWithColumns(20)));
10746   EXPECT_EQ("f(g(\"long string \"\n"
10747             "    \"literal\",\n"
10748             "    a),\n"
10749             "  b);",
10750             format("f(g(\"long string literal\", a), b);",
10751                    getLLVMStyleWithColumns(20)));
10752   EXPECT_EQ(
10753       "f(\"one two\".split(\n"
10754       "    variable));",
10755       format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
10756   EXPECT_EQ("f(\"one two three four five six \"\n"
10757             "  \"seven\".split(\n"
10758             "      really_looooong_variable));",
10759             format("f(\"one two three four five six seven\"."
10760                    "split(really_looooong_variable));",
10761                    getLLVMStyleWithColumns(33)));
10762 
10763   EXPECT_EQ("f(\"some \"\n"
10764             "  \"text\",\n"
10765             "  other);",
10766             format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
10767 
10768   // Only break as a last resort.
10769   verifyFormat(
10770       "aaaaaaaaaaaaaaaaaaaa(\n"
10771       "    aaaaaaaaaaaaaaaaaaaa,\n"
10772       "    aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
10773 
10774   EXPECT_EQ("\"splitmea\"\n"
10775             "\"trandomp\"\n"
10776             "\"oint\"",
10777             format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10)));
10778 
10779   EXPECT_EQ("\"split/\"\n"
10780             "\"pathat/\"\n"
10781             "\"slashes\"",
10782             format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
10783 
10784   EXPECT_EQ("\"split/\"\n"
10785             "\"pathat/\"\n"
10786             "\"slashes\"",
10787             format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
10788   EXPECT_EQ("\"split at \"\n"
10789             "\"spaces/at/\"\n"
10790             "\"slashes.at.any$\"\n"
10791             "\"non-alphanumeric%\"\n"
10792             "\"1111111111characte\"\n"
10793             "\"rs\"",
10794             format("\"split at "
10795                    "spaces/at/"
10796                    "slashes.at."
10797                    "any$non-"
10798                    "alphanumeric%"
10799                    "1111111111characte"
10800                    "rs\"",
10801                    getLLVMStyleWithColumns(20)));
10802 
10803   // Verify that splitting the strings understands
10804   // Style::AlwaysBreakBeforeMultilineStrings.
10805   EXPECT_EQ("aaaaaaaaaaaa(\n"
10806             "    \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n"
10807             "    \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");",
10808             format("aaaaaaaaaaaa(\"aaaaaaaaaaaaaaaaaaaaaaaaaa "
10809                    "aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa "
10810                    "aaaaaaaaaaaaaaaaaaaaaa\");",
10811                    getGoogleStyle()));
10812   EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
10813             "       \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";",
10814             format("return \"aaaaaaaaaaaaaaaaaaaaaa "
10815                    "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa "
10816                    "aaaaaaaaaaaaaaaaaaaaaa\";",
10817                    getGoogleStyle()));
10818   EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
10819             "                \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
10820             format("llvm::outs() << "
10821                    "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa"
10822                    "aaaaaaaaaaaaaaaaaaa\";"));
10823   EXPECT_EQ("ffff(\n"
10824             "    {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
10825             "     \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
10826             format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa "
10827                    "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});",
10828                    getGoogleStyle()));
10829 
10830   FormatStyle Style = getLLVMStyleWithColumns(12);
10831   Style.BreakStringLiterals = false;
10832   EXPECT_EQ("\"some text other\";", format("\"some text other\";", Style));
10833 
10834   FormatStyle AlignLeft = getLLVMStyleWithColumns(12);
10835   AlignLeft.AlignEscapedNewlines = FormatStyle::ENAS_Left;
10836   EXPECT_EQ("#define A \\\n"
10837             "  \"some \" \\\n"
10838             "  \"text \" \\\n"
10839             "  \"other\";",
10840             format("#define A \"some text other\";", AlignLeft));
10841 }
10842 
10843 TEST_F(FormatTest, BreaksStringLiteralsAtColumnLimit) {
10844   EXPECT_EQ("C a = \"some more \"\n"
10845             "      \"text\";",
10846             format("C a = \"some more text\";", getLLVMStyleWithColumns(18)));
10847 }
10848 
10849 TEST_F(FormatTest, FullyRemoveEmptyLines) {
10850   FormatStyle NoEmptyLines = getLLVMStyleWithColumns(80);
10851   NoEmptyLines.MaxEmptyLinesToKeep = 0;
10852   EXPECT_EQ("int i = a(b());",
10853             format("int i=a(\n\n b(\n\n\n )\n\n);", NoEmptyLines));
10854 }
10855 
10856 TEST_F(FormatTest, BreaksStringLiteralsWithTabs) {
10857   EXPECT_EQ(
10858       "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
10859       "(\n"
10860       "    \"x\t\");",
10861       format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
10862              "aaaaaaa("
10863              "\"x\t\");"));
10864 }
10865 
10866 TEST_F(FormatTest, BreaksWideAndNSStringLiterals) {
10867   EXPECT_EQ(
10868       "u8\"utf8 string \"\n"
10869       "u8\"literal\";",
10870       format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16)));
10871   EXPECT_EQ(
10872       "u\"utf16 string \"\n"
10873       "u\"literal\";",
10874       format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16)));
10875   EXPECT_EQ(
10876       "U\"utf32 string \"\n"
10877       "U\"literal\";",
10878       format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16)));
10879   EXPECT_EQ("L\"wide string \"\n"
10880             "L\"literal\";",
10881             format("L\"wide string literal\";", getGoogleStyleWithColumns(16)));
10882   EXPECT_EQ("@\"NSString \"\n"
10883             "@\"literal\";",
10884             format("@\"NSString literal\";", getGoogleStyleWithColumns(19)));
10885   verifyFormat(R"(NSString *s = @"那那那那";)", getLLVMStyleWithColumns(26));
10886 
10887   // This input makes clang-format try to split the incomplete unicode escape
10888   // sequence, which used to lead to a crasher.
10889   verifyNoCrash(
10890       "aaaaaaaaaaaaaaaaaaaa = L\"\\udff\"'; // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
10891       getLLVMStyleWithColumns(60));
10892 }
10893 
10894 TEST_F(FormatTest, DoesNotBreakRawStringLiterals) {
10895   FormatStyle Style = getGoogleStyleWithColumns(15);
10896   EXPECT_EQ("R\"x(raw literal)x\";", format("R\"x(raw literal)x\";", Style));
10897   EXPECT_EQ("uR\"x(raw literal)x\";", format("uR\"x(raw literal)x\";", Style));
10898   EXPECT_EQ("LR\"x(raw literal)x\";", format("LR\"x(raw literal)x\";", Style));
10899   EXPECT_EQ("UR\"x(raw literal)x\";", format("UR\"x(raw literal)x\";", Style));
10900   EXPECT_EQ("u8R\"x(raw literal)x\";",
10901             format("u8R\"x(raw literal)x\";", Style));
10902 }
10903 
10904 TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) {
10905   FormatStyle Style = getLLVMStyleWithColumns(20);
10906   EXPECT_EQ(
10907       "_T(\"aaaaaaaaaaaaaa\")\n"
10908       "_T(\"aaaaaaaaaaaaaa\")\n"
10909       "_T(\"aaaaaaaaaaaa\")",
10910       format("  _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style));
10911   EXPECT_EQ("f(x,\n"
10912             "  _T(\"aaaaaaaaaaaa\")\n"
10913             "  _T(\"aaa\"),\n"
10914             "  z);",
10915             format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style));
10916 
10917   // FIXME: Handle embedded spaces in one iteration.
10918   //  EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n"
10919   //            "_T(\"aaaaaaaaaaaaa\")\n"
10920   //            "_T(\"aaaaaaaaaaaaa\")\n"
10921   //            "_T(\"a\")",
10922   //            format("  _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
10923   //                   getLLVMStyleWithColumns(20)));
10924   EXPECT_EQ(
10925       "_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )",
10926       format("  _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style));
10927   EXPECT_EQ("f(\n"
10928             "#if !TEST\n"
10929             "    _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
10930             "#endif\n"
10931             ");",
10932             format("f(\n"
10933                    "#if !TEST\n"
10934                    "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n"
10935                    "#endif\n"
10936                    ");"));
10937   EXPECT_EQ("f(\n"
10938             "\n"
10939             "    _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));",
10940             format("f(\n"
10941                    "\n"
10942                    "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));"));
10943 }
10944 
10945 TEST_F(FormatTest, BreaksStringLiteralOperands) {
10946   // In a function call with two operands, the second can be broken with no line
10947   // break before it.
10948   EXPECT_EQ(
10949       "func(a, \"long long \"\n"
10950       "        \"long long\");",
10951       format("func(a, \"long long long long\");", getLLVMStyleWithColumns(24)));
10952   // In a function call with three operands, the second must be broken with a
10953   // line break before it.
10954   EXPECT_EQ("func(a,\n"
10955             "     \"long long long \"\n"
10956             "     \"long\",\n"
10957             "     c);",
10958             format("func(a, \"long long long long\", c);",
10959                    getLLVMStyleWithColumns(24)));
10960   // In a function call with three operands, the third must be broken with a
10961   // line break before it.
10962   EXPECT_EQ("func(a, b,\n"
10963             "     \"long long long \"\n"
10964             "     \"long\");",
10965             format("func(a, b, \"long long long long\");",
10966                    getLLVMStyleWithColumns(24)));
10967   // In a function call with three operands, both the second and the third must
10968   // be broken with a line break before them.
10969   EXPECT_EQ("func(a,\n"
10970             "     \"long long long \"\n"
10971             "     \"long\",\n"
10972             "     \"long long long \"\n"
10973             "     \"long\");",
10974             format("func(a, \"long long long long\", \"long long long long\");",
10975                    getLLVMStyleWithColumns(24)));
10976   // In a chain of << with two operands, the second can be broken with no line
10977   // break before it.
10978   EXPECT_EQ("a << \"line line \"\n"
10979             "     \"line\";",
10980             format("a << \"line line line\";", getLLVMStyleWithColumns(20)));
10981   // In a chain of << with three operands, the second can be broken with no line
10982   // break before it.
10983   EXPECT_EQ(
10984       "abcde << \"line \"\n"
10985       "         \"line line\"\n"
10986       "      << c;",
10987       format("abcde << \"line line line\" << c;", getLLVMStyleWithColumns(20)));
10988   // In a chain of << with three operands, the third must be broken with a line
10989   // break before it.
10990   EXPECT_EQ(
10991       "a << b\n"
10992       "  << \"line line \"\n"
10993       "     \"line\";",
10994       format("a << b << \"line line line\";", getLLVMStyleWithColumns(20)));
10995   // In a chain of << with three operands, the second can be broken with no line
10996   // break before it and the third must be broken with a line break before it.
10997   EXPECT_EQ("abcd << \"line line \"\n"
10998             "        \"line\"\n"
10999             "     << \"line line \"\n"
11000             "        \"line\";",
11001             format("abcd << \"line line line\" << \"line line line\";",
11002                    getLLVMStyleWithColumns(20)));
11003   // In a chain of binary operators with two operands, the second can be broken
11004   // with no line break before it.
11005   EXPECT_EQ(
11006       "abcd + \"line line \"\n"
11007       "       \"line line\";",
11008       format("abcd + \"line line line line\";", getLLVMStyleWithColumns(20)));
11009   // In a chain of binary operators with three operands, the second must be
11010   // broken with a line break before it.
11011   EXPECT_EQ("abcd +\n"
11012             "    \"line line \"\n"
11013             "    \"line line\" +\n"
11014             "    e;",
11015             format("abcd + \"line line line line\" + e;",
11016                    getLLVMStyleWithColumns(20)));
11017   // In a function call with two operands, with AlignAfterOpenBracket enabled,
11018   // the first must be broken with a line break before it.
11019   FormatStyle Style = getLLVMStyleWithColumns(25);
11020   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
11021   EXPECT_EQ("someFunction(\n"
11022             "    \"long long long \"\n"
11023             "    \"long\",\n"
11024             "    a);",
11025             format("someFunction(\"long long long long\", a);", Style));
11026 }
11027 
11028 TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) {
11029   EXPECT_EQ(
11030       "aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
11031       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
11032       "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";",
11033       format("aaaaaaaaaaa  =  \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
11034              "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n"
11035              "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";"));
11036 }
11037 
11038 TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) {
11039   EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);",
11040             format("f(g(R\"x(raw literal)x\",   a), b);", getGoogleStyle()));
11041   EXPECT_EQ("fffffffffff(g(R\"x(\n"
11042             "multiline raw string literal xxxxxxxxxxxxxx\n"
11043             ")x\",\n"
11044             "              a),\n"
11045             "            b);",
11046             format("fffffffffff(g(R\"x(\n"
11047                    "multiline raw string literal xxxxxxxxxxxxxx\n"
11048                    ")x\", a), b);",
11049                    getGoogleStyleWithColumns(20)));
11050   EXPECT_EQ("fffffffffff(\n"
11051             "    g(R\"x(qqq\n"
11052             "multiline raw string literal xxxxxxxxxxxxxx\n"
11053             ")x\",\n"
11054             "      a),\n"
11055             "    b);",
11056             format("fffffffffff(g(R\"x(qqq\n"
11057                    "multiline raw string literal xxxxxxxxxxxxxx\n"
11058                    ")x\", a), b);",
11059                    getGoogleStyleWithColumns(20)));
11060 
11061   EXPECT_EQ("fffffffffff(R\"x(\n"
11062             "multiline raw string literal xxxxxxxxxxxxxx\n"
11063             ")x\");",
11064             format("fffffffffff(R\"x(\n"
11065                    "multiline raw string literal xxxxxxxxxxxxxx\n"
11066                    ")x\");",
11067                    getGoogleStyleWithColumns(20)));
11068   EXPECT_EQ("fffffffffff(R\"x(\n"
11069             "multiline raw string literal xxxxxxxxxxxxxx\n"
11070             ")x\" + bbbbbb);",
11071             format("fffffffffff(R\"x(\n"
11072                    "multiline raw string literal xxxxxxxxxxxxxx\n"
11073                    ")x\" +   bbbbbb);",
11074                    getGoogleStyleWithColumns(20)));
11075   EXPECT_EQ("fffffffffff(\n"
11076             "    R\"x(\n"
11077             "multiline raw string literal xxxxxxxxxxxxxx\n"
11078             ")x\" +\n"
11079             "    bbbbbb);",
11080             format("fffffffffff(\n"
11081                    " R\"x(\n"
11082                    "multiline raw string literal xxxxxxxxxxxxxx\n"
11083                    ")x\" + bbbbbb);",
11084                    getGoogleStyleWithColumns(20)));
11085   EXPECT_EQ("fffffffffff(R\"(single line raw string)\" + bbbbbb);",
11086             format("fffffffffff(\n"
11087                    " R\"(single line raw string)\" + bbbbbb);"));
11088 }
11089 
11090 TEST_F(FormatTest, SkipsUnknownStringLiterals) {
11091   verifyFormat("string a = \"unterminated;");
11092   EXPECT_EQ("function(\"unterminated,\n"
11093             "         OtherParameter);",
11094             format("function(  \"unterminated,\n"
11095                    "    OtherParameter);"));
11096 }
11097 
11098 TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) {
11099   FormatStyle Style = getLLVMStyle();
11100   Style.Standard = FormatStyle::LS_Cpp03;
11101   EXPECT_EQ("#define x(_a) printf(\"foo\" _a);",
11102             format("#define x(_a) printf(\"foo\"_a);", Style));
11103 }
11104 
11105 TEST_F(FormatTest, CppLexVersion) {
11106   FormatStyle Style = getLLVMStyle();
11107   // Formatting of x * y differs if x is a type.
11108   verifyFormat("void foo() { MACRO(a * b); }", Style);
11109   verifyFormat("void foo() { MACRO(int *b); }", Style);
11110 
11111   // LLVM style uses latest lexer.
11112   verifyFormat("void foo() { MACRO(char8_t *b); }", Style);
11113   Style.Standard = FormatStyle::LS_Cpp17;
11114   // But in c++17, char8_t isn't a keyword.
11115   verifyFormat("void foo() { MACRO(char8_t * b); }", Style);
11116 }
11117 
11118 TEST_F(FormatTest, UnderstandsCpp1y) { verifyFormat("int bi{1'000'000};"); }
11119 
11120 TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) {
11121   EXPECT_EQ("someFunction(\"aaabbbcccd\"\n"
11122             "             \"ddeeefff\");",
11123             format("someFunction(\"aaabbbcccdddeeefff\");",
11124                    getLLVMStyleWithColumns(25)));
11125   EXPECT_EQ("someFunction1234567890(\n"
11126             "    \"aaabbbcccdddeeefff\");",
11127             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
11128                    getLLVMStyleWithColumns(26)));
11129   EXPECT_EQ("someFunction1234567890(\n"
11130             "    \"aaabbbcccdddeeeff\"\n"
11131             "    \"f\");",
11132             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
11133                    getLLVMStyleWithColumns(25)));
11134   EXPECT_EQ("someFunction1234567890(\n"
11135             "    \"aaabbbcccdddeeeff\"\n"
11136             "    \"f\");",
11137             format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
11138                    getLLVMStyleWithColumns(24)));
11139   EXPECT_EQ("someFunction(\n"
11140             "    \"aaabbbcc ddde \"\n"
11141             "    \"efff\");",
11142             format("someFunction(\"aaabbbcc ddde efff\");",
11143                    getLLVMStyleWithColumns(25)));
11144   EXPECT_EQ("someFunction(\"aaabbbccc \"\n"
11145             "             \"ddeeefff\");",
11146             format("someFunction(\"aaabbbccc ddeeefff\");",
11147                    getLLVMStyleWithColumns(25)));
11148   EXPECT_EQ("someFunction1234567890(\n"
11149             "    \"aaabb \"\n"
11150             "    \"cccdddeeefff\");",
11151             format("someFunction1234567890(\"aaabb cccdddeeefff\");",
11152                    getLLVMStyleWithColumns(25)));
11153   EXPECT_EQ("#define A          \\\n"
11154             "  string s =       \\\n"
11155             "      \"123456789\"  \\\n"
11156             "      \"0\";         \\\n"
11157             "  int i;",
11158             format("#define A string s = \"1234567890\"; int i;",
11159                    getLLVMStyleWithColumns(20)));
11160   EXPECT_EQ("someFunction(\n"
11161             "    \"aaabbbcc \"\n"
11162             "    \"dddeeefff\");",
11163             format("someFunction(\"aaabbbcc dddeeefff\");",
11164                    getLLVMStyleWithColumns(25)));
11165 }
11166 
11167 TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) {
11168   EXPECT_EQ("\"\\a\"", format("\"\\a\"", getLLVMStyleWithColumns(3)));
11169   EXPECT_EQ("\"\\\"", format("\"\\\"", getLLVMStyleWithColumns(2)));
11170   EXPECT_EQ("\"test\"\n"
11171             "\"\\n\"",
11172             format("\"test\\n\"", getLLVMStyleWithColumns(7)));
11173   EXPECT_EQ("\"tes\\\\\"\n"
11174             "\"n\"",
11175             format("\"tes\\\\n\"", getLLVMStyleWithColumns(7)));
11176   EXPECT_EQ("\"\\\\\\\\\"\n"
11177             "\"\\n\"",
11178             format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7)));
11179   EXPECT_EQ("\"\\uff01\"", format("\"\\uff01\"", getLLVMStyleWithColumns(7)));
11180   EXPECT_EQ("\"\\uff01\"\n"
11181             "\"test\"",
11182             format("\"\\uff01test\"", getLLVMStyleWithColumns(8)));
11183   EXPECT_EQ("\"\\Uff01ff02\"",
11184             format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11)));
11185   EXPECT_EQ("\"\\x000000000001\"\n"
11186             "\"next\"",
11187             format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16)));
11188   EXPECT_EQ("\"\\x000000000001next\"",
11189             format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15)));
11190   EXPECT_EQ("\"\\x000000000001\"",
11191             format("\"\\x000000000001\"", getLLVMStyleWithColumns(7)));
11192   EXPECT_EQ("\"test\"\n"
11193             "\"\\000000\"\n"
11194             "\"000001\"",
11195             format("\"test\\000000000001\"", getLLVMStyleWithColumns(9)));
11196   EXPECT_EQ("\"test\\000\"\n"
11197             "\"00000000\"\n"
11198             "\"1\"",
11199             format("\"test\\000000000001\"", getLLVMStyleWithColumns(10)));
11200 }
11201 
11202 TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) {
11203   verifyFormat("void f() {\n"
11204                "  return g() {}\n"
11205                "  void h() {}");
11206   verifyFormat("int a[] = {void forgot_closing_brace(){f();\n"
11207                "g();\n"
11208                "}");
11209 }
11210 
11211 TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) {
11212   verifyFormat(
11213       "void f() { return C{param1, param2}.SomeCall(param1, param2); }");
11214 }
11215 
11216 TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) {
11217   verifyFormat("class X {\n"
11218                "  void f() {\n"
11219                "  }\n"
11220                "};",
11221                getLLVMStyleWithColumns(12));
11222 }
11223 
11224 TEST_F(FormatTest, ConfigurableIndentWidth) {
11225   FormatStyle EightIndent = getLLVMStyleWithColumns(18);
11226   EightIndent.IndentWidth = 8;
11227   EightIndent.ContinuationIndentWidth = 8;
11228   verifyFormat("void f() {\n"
11229                "        someFunction();\n"
11230                "        if (true) {\n"
11231                "                f();\n"
11232                "        }\n"
11233                "}",
11234                EightIndent);
11235   verifyFormat("class X {\n"
11236                "        void f() {\n"
11237                "        }\n"
11238                "};",
11239                EightIndent);
11240   verifyFormat("int x[] = {\n"
11241                "        call(),\n"
11242                "        call()};",
11243                EightIndent);
11244 }
11245 
11246 TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) {
11247   verifyFormat("double\n"
11248                "f();",
11249                getLLVMStyleWithColumns(8));
11250 }
11251 
11252 TEST_F(FormatTest, ConfigurableUseOfTab) {
11253   FormatStyle Tab = getLLVMStyleWithColumns(42);
11254   Tab.IndentWidth = 8;
11255   Tab.UseTab = FormatStyle::UT_Always;
11256   Tab.AlignEscapedNewlines = FormatStyle::ENAS_Left;
11257 
11258   EXPECT_EQ("if (aaaaaaaa && // q\n"
11259             "    bb)\t\t// w\n"
11260             "\t;",
11261             format("if (aaaaaaaa &&// q\n"
11262                    "bb)// w\n"
11263                    ";",
11264                    Tab));
11265   EXPECT_EQ("if (aaa && bbb) // w\n"
11266             "\t;",
11267             format("if(aaa&&bbb)// w\n"
11268                    ";",
11269                    Tab));
11270 
11271   verifyFormat("class X {\n"
11272                "\tvoid f() {\n"
11273                "\t\tsomeFunction(parameter1,\n"
11274                "\t\t\t     parameter2);\n"
11275                "\t}\n"
11276                "};",
11277                Tab);
11278   verifyFormat("#define A                        \\\n"
11279                "\tvoid f() {               \\\n"
11280                "\t\tsomeFunction(    \\\n"
11281                "\t\t    parameter1,  \\\n"
11282                "\t\t    parameter2); \\\n"
11283                "\t}",
11284                Tab);
11285   verifyFormat("int a;\t      // x\n"
11286                "int bbbbbbbb; // x\n",
11287                Tab);
11288 
11289   Tab.TabWidth = 4;
11290   Tab.IndentWidth = 8;
11291   verifyFormat("class TabWidth4Indent8 {\n"
11292                "\t\tvoid f() {\n"
11293                "\t\t\t\tsomeFunction(parameter1,\n"
11294                "\t\t\t\t\t\t\t parameter2);\n"
11295                "\t\t}\n"
11296                "};",
11297                Tab);
11298 
11299   Tab.TabWidth = 4;
11300   Tab.IndentWidth = 4;
11301   verifyFormat("class TabWidth4Indent4 {\n"
11302                "\tvoid f() {\n"
11303                "\t\tsomeFunction(parameter1,\n"
11304                "\t\t\t\t\t parameter2);\n"
11305                "\t}\n"
11306                "};",
11307                Tab);
11308 
11309   Tab.TabWidth = 8;
11310   Tab.IndentWidth = 4;
11311   verifyFormat("class TabWidth8Indent4 {\n"
11312                "    void f() {\n"
11313                "\tsomeFunction(parameter1,\n"
11314                "\t\t     parameter2);\n"
11315                "    }\n"
11316                "};",
11317                Tab);
11318 
11319   Tab.TabWidth = 8;
11320   Tab.IndentWidth = 8;
11321   EXPECT_EQ("/*\n"
11322             "\t      a\t\tcomment\n"
11323             "\t      in multiple lines\n"
11324             "       */",
11325             format("   /*\t \t \n"
11326                    " \t \t a\t\tcomment\t \t\n"
11327                    " \t \t in multiple lines\t\n"
11328                    " \t  */",
11329                    Tab));
11330 
11331   Tab.UseTab = FormatStyle::UT_ForIndentation;
11332   verifyFormat("{\n"
11333                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11334                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11335                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11336                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11337                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11338                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11339                "};",
11340                Tab);
11341   verifyFormat("enum AA {\n"
11342                "\ta1, // Force multiple lines\n"
11343                "\ta2,\n"
11344                "\ta3\n"
11345                "};",
11346                Tab);
11347   EXPECT_EQ("if (aaaaaaaa && // q\n"
11348             "    bb)         // w\n"
11349             "\t;",
11350             format("if (aaaaaaaa &&// q\n"
11351                    "bb)// w\n"
11352                    ";",
11353                    Tab));
11354   verifyFormat("class X {\n"
11355                "\tvoid f() {\n"
11356                "\t\tsomeFunction(parameter1,\n"
11357                "\t\t             parameter2);\n"
11358                "\t}\n"
11359                "};",
11360                Tab);
11361   verifyFormat("{\n"
11362                "\tQ(\n"
11363                "\t    {\n"
11364                "\t\t    int a;\n"
11365                "\t\t    someFunction(aaaaaaaa,\n"
11366                "\t\t                 bbbbbbb);\n"
11367                "\t    },\n"
11368                "\t    p);\n"
11369                "}",
11370                Tab);
11371   EXPECT_EQ("{\n"
11372             "\t/* aaaa\n"
11373             "\t   bbbb */\n"
11374             "}",
11375             format("{\n"
11376                    "/* aaaa\n"
11377                    "   bbbb */\n"
11378                    "}",
11379                    Tab));
11380   EXPECT_EQ("{\n"
11381             "\t/*\n"
11382             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11383             "\t  bbbbbbbbbbbbb\n"
11384             "\t*/\n"
11385             "}",
11386             format("{\n"
11387                    "/*\n"
11388                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11389                    "*/\n"
11390                    "}",
11391                    Tab));
11392   EXPECT_EQ("{\n"
11393             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11394             "\t// bbbbbbbbbbbbb\n"
11395             "}",
11396             format("{\n"
11397                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11398                    "}",
11399                    Tab));
11400   EXPECT_EQ("{\n"
11401             "\t/*\n"
11402             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11403             "\t  bbbbbbbbbbbbb\n"
11404             "\t*/\n"
11405             "}",
11406             format("{\n"
11407                    "\t/*\n"
11408                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11409                    "\t*/\n"
11410                    "}",
11411                    Tab));
11412   EXPECT_EQ("{\n"
11413             "\t/*\n"
11414             "\n"
11415             "\t*/\n"
11416             "}",
11417             format("{\n"
11418                    "\t/*\n"
11419                    "\n"
11420                    "\t*/\n"
11421                    "}",
11422                    Tab));
11423   EXPECT_EQ("{\n"
11424             "\t/*\n"
11425             " asdf\n"
11426             "\t*/\n"
11427             "}",
11428             format("{\n"
11429                    "\t/*\n"
11430                    " asdf\n"
11431                    "\t*/\n"
11432                    "}",
11433                    Tab));
11434 
11435   Tab.UseTab = FormatStyle::UT_Never;
11436   EXPECT_EQ("/*\n"
11437             "              a\t\tcomment\n"
11438             "              in multiple lines\n"
11439             "       */",
11440             format("   /*\t \t \n"
11441                    " \t \t a\t\tcomment\t \t\n"
11442                    " \t \t in multiple lines\t\n"
11443                    " \t  */",
11444                    Tab));
11445   EXPECT_EQ("/* some\n"
11446             "   comment */",
11447             format(" \t \t /* some\n"
11448                    " \t \t    comment */",
11449                    Tab));
11450   EXPECT_EQ("int a; /* some\n"
11451             "   comment */",
11452             format(" \t \t int a; /* some\n"
11453                    " \t \t    comment */",
11454                    Tab));
11455 
11456   EXPECT_EQ("int a; /* some\n"
11457             "comment */",
11458             format(" \t \t int\ta; /* some\n"
11459                    " \t \t    comment */",
11460                    Tab));
11461   EXPECT_EQ("f(\"\t\t\"); /* some\n"
11462             "    comment */",
11463             format(" \t \t f(\"\t\t\"); /* some\n"
11464                    " \t \t    comment */",
11465                    Tab));
11466   EXPECT_EQ("{\n"
11467             "        /*\n"
11468             "         * Comment\n"
11469             "         */\n"
11470             "        int i;\n"
11471             "}",
11472             format("{\n"
11473                    "\t/*\n"
11474                    "\t * Comment\n"
11475                    "\t */\n"
11476                    "\t int i;\n"
11477                    "}",
11478                    Tab));
11479 
11480   Tab.UseTab = FormatStyle::UT_ForContinuationAndIndentation;
11481   Tab.TabWidth = 8;
11482   Tab.IndentWidth = 8;
11483   EXPECT_EQ("if (aaaaaaaa && // q\n"
11484             "    bb)         // w\n"
11485             "\t;",
11486             format("if (aaaaaaaa &&// q\n"
11487                    "bb)// w\n"
11488                    ";",
11489                    Tab));
11490   EXPECT_EQ("if (aaa && bbb) // w\n"
11491             "\t;",
11492             format("if(aaa&&bbb)// w\n"
11493                    ";",
11494                    Tab));
11495   verifyFormat("class X {\n"
11496                "\tvoid f() {\n"
11497                "\t\tsomeFunction(parameter1,\n"
11498                "\t\t\t     parameter2);\n"
11499                "\t}\n"
11500                "};",
11501                Tab);
11502   verifyFormat("#define A                        \\\n"
11503                "\tvoid f() {               \\\n"
11504                "\t\tsomeFunction(    \\\n"
11505                "\t\t    parameter1,  \\\n"
11506                "\t\t    parameter2); \\\n"
11507                "\t}",
11508                Tab);
11509   Tab.TabWidth = 4;
11510   Tab.IndentWidth = 8;
11511   verifyFormat("class TabWidth4Indent8 {\n"
11512                "\t\tvoid f() {\n"
11513                "\t\t\t\tsomeFunction(parameter1,\n"
11514                "\t\t\t\t\t\t\t parameter2);\n"
11515                "\t\t}\n"
11516                "};",
11517                Tab);
11518   Tab.TabWidth = 4;
11519   Tab.IndentWidth = 4;
11520   verifyFormat("class TabWidth4Indent4 {\n"
11521                "\tvoid f() {\n"
11522                "\t\tsomeFunction(parameter1,\n"
11523                "\t\t\t\t\t parameter2);\n"
11524                "\t}\n"
11525                "};",
11526                Tab);
11527   Tab.TabWidth = 8;
11528   Tab.IndentWidth = 4;
11529   verifyFormat("class TabWidth8Indent4 {\n"
11530                "    void f() {\n"
11531                "\tsomeFunction(parameter1,\n"
11532                "\t\t     parameter2);\n"
11533                "    }\n"
11534                "};",
11535                Tab);
11536   Tab.TabWidth = 8;
11537   Tab.IndentWidth = 8;
11538   EXPECT_EQ("/*\n"
11539             "\t      a\t\tcomment\n"
11540             "\t      in multiple lines\n"
11541             "       */",
11542             format("   /*\t \t \n"
11543                    " \t \t a\t\tcomment\t \t\n"
11544                    " \t \t in multiple lines\t\n"
11545                    " \t  */",
11546                    Tab));
11547   verifyFormat("{\n"
11548                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11549                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11550                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11551                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11552                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11553                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11554                "};",
11555                Tab);
11556   verifyFormat("enum AA {\n"
11557                "\ta1, // Force multiple lines\n"
11558                "\ta2,\n"
11559                "\ta3\n"
11560                "};",
11561                Tab);
11562   EXPECT_EQ("if (aaaaaaaa && // q\n"
11563             "    bb)         // w\n"
11564             "\t;",
11565             format("if (aaaaaaaa &&// q\n"
11566                    "bb)// w\n"
11567                    ";",
11568                    Tab));
11569   verifyFormat("class X {\n"
11570                "\tvoid f() {\n"
11571                "\t\tsomeFunction(parameter1,\n"
11572                "\t\t\t     parameter2);\n"
11573                "\t}\n"
11574                "};",
11575                Tab);
11576   verifyFormat("{\n"
11577                "\tQ(\n"
11578                "\t    {\n"
11579                "\t\t    int a;\n"
11580                "\t\t    someFunction(aaaaaaaa,\n"
11581                "\t\t\t\t bbbbbbb);\n"
11582                "\t    },\n"
11583                "\t    p);\n"
11584                "}",
11585                Tab);
11586   EXPECT_EQ("{\n"
11587             "\t/* aaaa\n"
11588             "\t   bbbb */\n"
11589             "}",
11590             format("{\n"
11591                    "/* aaaa\n"
11592                    "   bbbb */\n"
11593                    "}",
11594                    Tab));
11595   EXPECT_EQ("{\n"
11596             "\t/*\n"
11597             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11598             "\t  bbbbbbbbbbbbb\n"
11599             "\t*/\n"
11600             "}",
11601             format("{\n"
11602                    "/*\n"
11603                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11604                    "*/\n"
11605                    "}",
11606                    Tab));
11607   EXPECT_EQ("{\n"
11608             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11609             "\t// bbbbbbbbbbbbb\n"
11610             "}",
11611             format("{\n"
11612                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11613                    "}",
11614                    Tab));
11615   EXPECT_EQ("{\n"
11616             "\t/*\n"
11617             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11618             "\t  bbbbbbbbbbbbb\n"
11619             "\t*/\n"
11620             "}",
11621             format("{\n"
11622                    "\t/*\n"
11623                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11624                    "\t*/\n"
11625                    "}",
11626                    Tab));
11627   EXPECT_EQ("{\n"
11628             "\t/*\n"
11629             "\n"
11630             "\t*/\n"
11631             "}",
11632             format("{\n"
11633                    "\t/*\n"
11634                    "\n"
11635                    "\t*/\n"
11636                    "}",
11637                    Tab));
11638   EXPECT_EQ("{\n"
11639             "\t/*\n"
11640             " asdf\n"
11641             "\t*/\n"
11642             "}",
11643             format("{\n"
11644                    "\t/*\n"
11645                    " asdf\n"
11646                    "\t*/\n"
11647                    "}",
11648                    Tab));
11649   EXPECT_EQ("/* some\n"
11650             "   comment */",
11651             format(" \t \t /* some\n"
11652                    " \t \t    comment */",
11653                    Tab));
11654   EXPECT_EQ("int a; /* some\n"
11655             "   comment */",
11656             format(" \t \t int a; /* some\n"
11657                    " \t \t    comment */",
11658                    Tab));
11659   EXPECT_EQ("int a; /* some\n"
11660             "comment */",
11661             format(" \t \t int\ta; /* some\n"
11662                    " \t \t    comment */",
11663                    Tab));
11664   EXPECT_EQ("f(\"\t\t\"); /* some\n"
11665             "    comment */",
11666             format(" \t \t f(\"\t\t\"); /* some\n"
11667                    " \t \t    comment */",
11668                    Tab));
11669   EXPECT_EQ("{\n"
11670             "\t/*\n"
11671             "\t * Comment\n"
11672             "\t */\n"
11673             "\tint i;\n"
11674             "}",
11675             format("{\n"
11676                    "\t/*\n"
11677                    "\t * Comment\n"
11678                    "\t */\n"
11679                    "\t int i;\n"
11680                    "}",
11681                    Tab));
11682   Tab.TabWidth = 2;
11683   Tab.IndentWidth = 2;
11684   EXPECT_EQ("{\n"
11685             "\t/* aaaa\n"
11686             "\t\t bbbb */\n"
11687             "}",
11688             format("{\n"
11689                    "/* aaaa\n"
11690                    "\t bbbb */\n"
11691                    "}",
11692                    Tab));
11693   EXPECT_EQ("{\n"
11694             "\t/*\n"
11695             "\t\taaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11696             "\t\tbbbbbbbbbbbbb\n"
11697             "\t*/\n"
11698             "}",
11699             format("{\n"
11700                    "/*\n"
11701                    "\taaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11702                    "*/\n"
11703                    "}",
11704                    Tab));
11705   Tab.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
11706   Tab.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
11707   Tab.TabWidth = 4;
11708   Tab.IndentWidth = 4;
11709   verifyFormat("class Assign {\n"
11710                "\tvoid f() {\n"
11711                "\t\tint         x      = 123;\n"
11712                "\t\tint         random = 4;\n"
11713                "\t\tstd::string alphabet =\n"
11714                "\t\t\t\"abcdefghijklmnopqrstuvwxyz\";\n"
11715                "\t}\n"
11716                "};",
11717                Tab);
11718 
11719   Tab.UseTab = FormatStyle::UT_AlignWithSpaces;
11720   Tab.TabWidth = 8;
11721   Tab.IndentWidth = 8;
11722   EXPECT_EQ("if (aaaaaaaa && // q\n"
11723             "    bb)         // w\n"
11724             "\t;",
11725             format("if (aaaaaaaa &&// q\n"
11726                    "bb)// w\n"
11727                    ";",
11728                    Tab));
11729   EXPECT_EQ("if (aaa && bbb) // w\n"
11730             "\t;",
11731             format("if(aaa&&bbb)// w\n"
11732                    ";",
11733                    Tab));
11734   verifyFormat("class X {\n"
11735                "\tvoid f() {\n"
11736                "\t\tsomeFunction(parameter1,\n"
11737                "\t\t             parameter2);\n"
11738                "\t}\n"
11739                "};",
11740                Tab);
11741   verifyFormat("#define A                        \\\n"
11742                "\tvoid f() {               \\\n"
11743                "\t\tsomeFunction(    \\\n"
11744                "\t\t    parameter1,  \\\n"
11745                "\t\t    parameter2); \\\n"
11746                "\t}",
11747                Tab);
11748   Tab.TabWidth = 4;
11749   Tab.IndentWidth = 8;
11750   verifyFormat("class TabWidth4Indent8 {\n"
11751                "\t\tvoid f() {\n"
11752                "\t\t\t\tsomeFunction(parameter1,\n"
11753                "\t\t\t\t             parameter2);\n"
11754                "\t\t}\n"
11755                "};",
11756                Tab);
11757   Tab.TabWidth = 4;
11758   Tab.IndentWidth = 4;
11759   verifyFormat("class TabWidth4Indent4 {\n"
11760                "\tvoid f() {\n"
11761                "\t\tsomeFunction(parameter1,\n"
11762                "\t\t             parameter2);\n"
11763                "\t}\n"
11764                "};",
11765                Tab);
11766   Tab.TabWidth = 8;
11767   Tab.IndentWidth = 4;
11768   verifyFormat("class TabWidth8Indent4 {\n"
11769                "    void f() {\n"
11770                "\tsomeFunction(parameter1,\n"
11771                "\t             parameter2);\n"
11772                "    }\n"
11773                "};",
11774                Tab);
11775   Tab.TabWidth = 8;
11776   Tab.IndentWidth = 8;
11777   EXPECT_EQ("/*\n"
11778             "              a\t\tcomment\n"
11779             "              in multiple lines\n"
11780             "       */",
11781             format("   /*\t \t \n"
11782                    " \t \t a\t\tcomment\t \t\n"
11783                    " \t \t in multiple lines\t\n"
11784                    " \t  */",
11785                    Tab));
11786   verifyFormat("{\n"
11787                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11788                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11789                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11790                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11791                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11792                "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n"
11793                "};",
11794                Tab);
11795   verifyFormat("enum AA {\n"
11796                "\ta1, // Force multiple lines\n"
11797                "\ta2,\n"
11798                "\ta3\n"
11799                "};",
11800                Tab);
11801   EXPECT_EQ("if (aaaaaaaa && // q\n"
11802             "    bb)         // w\n"
11803             "\t;",
11804             format("if (aaaaaaaa &&// q\n"
11805                    "bb)// w\n"
11806                    ";",
11807                    Tab));
11808   verifyFormat("class X {\n"
11809                "\tvoid f() {\n"
11810                "\t\tsomeFunction(parameter1,\n"
11811                "\t\t             parameter2);\n"
11812                "\t}\n"
11813                "};",
11814                Tab);
11815   verifyFormat("{\n"
11816                "\tQ(\n"
11817                "\t    {\n"
11818                "\t\t    int a;\n"
11819                "\t\t    someFunction(aaaaaaaa,\n"
11820                "\t\t                 bbbbbbb);\n"
11821                "\t    },\n"
11822                "\t    p);\n"
11823                "}",
11824                Tab);
11825   EXPECT_EQ("{\n"
11826             "\t/* aaaa\n"
11827             "\t   bbbb */\n"
11828             "}",
11829             format("{\n"
11830                    "/* aaaa\n"
11831                    "   bbbb */\n"
11832                    "}",
11833                    Tab));
11834   EXPECT_EQ("{\n"
11835             "\t/*\n"
11836             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11837             "\t  bbbbbbbbbbbbb\n"
11838             "\t*/\n"
11839             "}",
11840             format("{\n"
11841                    "/*\n"
11842                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11843                    "*/\n"
11844                    "}",
11845                    Tab));
11846   EXPECT_EQ("{\n"
11847             "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11848             "\t// bbbbbbbbbbbbb\n"
11849             "}",
11850             format("{\n"
11851                    "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11852                    "}",
11853                    Tab));
11854   EXPECT_EQ("{\n"
11855             "\t/*\n"
11856             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11857             "\t  bbbbbbbbbbbbb\n"
11858             "\t*/\n"
11859             "}",
11860             format("{\n"
11861                    "\t/*\n"
11862                    "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11863                    "\t*/\n"
11864                    "}",
11865                    Tab));
11866   EXPECT_EQ("{\n"
11867             "\t/*\n"
11868             "\n"
11869             "\t*/\n"
11870             "}",
11871             format("{\n"
11872                    "\t/*\n"
11873                    "\n"
11874                    "\t*/\n"
11875                    "}",
11876                    Tab));
11877   EXPECT_EQ("{\n"
11878             "\t/*\n"
11879             " asdf\n"
11880             "\t*/\n"
11881             "}",
11882             format("{\n"
11883                    "\t/*\n"
11884                    " asdf\n"
11885                    "\t*/\n"
11886                    "}",
11887                    Tab));
11888   EXPECT_EQ("/* some\n"
11889             "   comment */",
11890             format(" \t \t /* some\n"
11891                    " \t \t    comment */",
11892                    Tab));
11893   EXPECT_EQ("int a; /* some\n"
11894             "   comment */",
11895             format(" \t \t int a; /* some\n"
11896                    " \t \t    comment */",
11897                    Tab));
11898   EXPECT_EQ("int a; /* some\n"
11899             "comment */",
11900             format(" \t \t int\ta; /* some\n"
11901                    " \t \t    comment */",
11902                    Tab));
11903   EXPECT_EQ("f(\"\t\t\"); /* some\n"
11904             "    comment */",
11905             format(" \t \t f(\"\t\t\"); /* some\n"
11906                    " \t \t    comment */",
11907                    Tab));
11908   EXPECT_EQ("{\n"
11909             "\t/*\n"
11910             "\t * Comment\n"
11911             "\t */\n"
11912             "\tint i;\n"
11913             "}",
11914             format("{\n"
11915                    "\t/*\n"
11916                    "\t * Comment\n"
11917                    "\t */\n"
11918                    "\t int i;\n"
11919                    "}",
11920                    Tab));
11921   Tab.TabWidth = 2;
11922   Tab.IndentWidth = 2;
11923   EXPECT_EQ("{\n"
11924             "\t/* aaaa\n"
11925             "\t   bbbb */\n"
11926             "}",
11927             format("{\n"
11928                    "/* aaaa\n"
11929                    "   bbbb */\n"
11930                    "}",
11931                    Tab));
11932   EXPECT_EQ("{\n"
11933             "\t/*\n"
11934             "\t  aaaaaaaaaaaaaaaaaaaaaaaaaa\n"
11935             "\t  bbbbbbbbbbbbb\n"
11936             "\t*/\n"
11937             "}",
11938             format("{\n"
11939                    "/*\n"
11940                    "  aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n"
11941                    "*/\n"
11942                    "}",
11943                    Tab));
11944   Tab.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
11945   Tab.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
11946   Tab.TabWidth = 4;
11947   Tab.IndentWidth = 4;
11948   verifyFormat("class Assign {\n"
11949                "\tvoid f() {\n"
11950                "\t\tint         x      = 123;\n"
11951                "\t\tint         random = 4;\n"
11952                "\t\tstd::string alphabet =\n"
11953                "\t\t\t\"abcdefghijklmnopqrstuvwxyz\";\n"
11954                "\t}\n"
11955                "};",
11956                Tab);
11957   Tab.AlignOperands = FormatStyle::OAS_Align;
11958   verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb +\n"
11959                "                 cccccccccccccccccccc;",
11960                Tab);
11961   // no alignment
11962   verifyFormat("int aaaaaaaaaa =\n"
11963                "\tbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;",
11964                Tab);
11965   verifyFormat("return aaaaaaaaaaaaaaaa ? 111111111111111\n"
11966                "       : bbbbbbbbbbbbbb ? 222222222222222\n"
11967                "                        : 333333333333333;",
11968                Tab);
11969   Tab.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
11970   Tab.AlignOperands = FormatStyle::OAS_AlignAfterOperator;
11971   verifyFormat("int aaaaaaaaaa = bbbbbbbbbbbbbbbbbbbb\n"
11972                "               + cccccccccccccccccccc;",
11973                Tab);
11974 }
11975 
11976 TEST_F(FormatTest, ZeroTabWidth) {
11977   FormatStyle Tab = getLLVMStyleWithColumns(42);
11978   Tab.IndentWidth = 8;
11979   Tab.UseTab = FormatStyle::UT_Never;
11980   Tab.TabWidth = 0;
11981   EXPECT_EQ("void a(){\n"
11982             "    // line starts with '\t'\n"
11983             "};",
11984             format("void a(){\n"
11985                    "\t// line starts with '\t'\n"
11986                    "};",
11987                    Tab));
11988 
11989   EXPECT_EQ("void a(){\n"
11990             "    // line starts with '\t'\n"
11991             "};",
11992             format("void a(){\n"
11993                    "\t\t// line starts with '\t'\n"
11994                    "};",
11995                    Tab));
11996 
11997   Tab.UseTab = FormatStyle::UT_ForIndentation;
11998   EXPECT_EQ("void a(){\n"
11999             "    // line starts with '\t'\n"
12000             "};",
12001             format("void a(){\n"
12002                    "\t// line starts with '\t'\n"
12003                    "};",
12004                    Tab));
12005 
12006   EXPECT_EQ("void a(){\n"
12007             "    // line starts with '\t'\n"
12008             "};",
12009             format("void a(){\n"
12010                    "\t\t// line starts with '\t'\n"
12011                    "};",
12012                    Tab));
12013 
12014   Tab.UseTab = FormatStyle::UT_ForContinuationAndIndentation;
12015   EXPECT_EQ("void a(){\n"
12016             "    // line starts with '\t'\n"
12017             "};",
12018             format("void a(){\n"
12019                    "\t// line starts with '\t'\n"
12020                    "};",
12021                    Tab));
12022 
12023   EXPECT_EQ("void a(){\n"
12024             "    // line starts with '\t'\n"
12025             "};",
12026             format("void a(){\n"
12027                    "\t\t// line starts with '\t'\n"
12028                    "};",
12029                    Tab));
12030 
12031   Tab.UseTab = FormatStyle::UT_AlignWithSpaces;
12032   EXPECT_EQ("void a(){\n"
12033             "    // line starts with '\t'\n"
12034             "};",
12035             format("void a(){\n"
12036                    "\t// line starts with '\t'\n"
12037                    "};",
12038                    Tab));
12039 
12040   EXPECT_EQ("void a(){\n"
12041             "    // line starts with '\t'\n"
12042             "};",
12043             format("void a(){\n"
12044                    "\t\t// line starts with '\t'\n"
12045                    "};",
12046                    Tab));
12047 
12048   Tab.UseTab = FormatStyle::UT_Always;
12049   EXPECT_EQ("void a(){\n"
12050             "// line starts with '\t'\n"
12051             "};",
12052             format("void a(){\n"
12053                    "\t// line starts with '\t'\n"
12054                    "};",
12055                    Tab));
12056 
12057   EXPECT_EQ("void a(){\n"
12058             "// line starts with '\t'\n"
12059             "};",
12060             format("void a(){\n"
12061                    "\t\t// line starts with '\t'\n"
12062                    "};",
12063                    Tab));
12064 }
12065 
12066 TEST_F(FormatTest, CalculatesOriginalColumn) {
12067   EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
12068             "q\"; /* some\n"
12069             "       comment */",
12070             format("  \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
12071                    "q\"; /* some\n"
12072                    "       comment */",
12073                    getLLVMStyle()));
12074   EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
12075             "/* some\n"
12076             "   comment */",
12077             format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n"
12078                    " /* some\n"
12079                    "    comment */",
12080                    getLLVMStyle()));
12081   EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
12082             "qqq\n"
12083             "/* some\n"
12084             "   comment */",
12085             format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
12086                    "qqq\n"
12087                    " /* some\n"
12088                    "    comment */",
12089                    getLLVMStyle()));
12090   EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
12091             "wwww; /* some\n"
12092             "         comment */",
12093             format("  inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n"
12094                    "wwww; /* some\n"
12095                    "         comment */",
12096                    getLLVMStyle()));
12097 }
12098 
12099 TEST_F(FormatTest, ConfigurableSpaceBeforeParens) {
12100   FormatStyle NoSpace = getLLVMStyle();
12101   NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never;
12102 
12103   verifyFormat("while(true)\n"
12104                "  continue;",
12105                NoSpace);
12106   verifyFormat("for(;;)\n"
12107                "  continue;",
12108                NoSpace);
12109   verifyFormat("if(true)\n"
12110                "  f();\n"
12111                "else if(true)\n"
12112                "  f();",
12113                NoSpace);
12114   verifyFormat("do {\n"
12115                "  do_something();\n"
12116                "} while(something());",
12117                NoSpace);
12118   verifyFormat("switch(x) {\n"
12119                "default:\n"
12120                "  break;\n"
12121                "}",
12122                NoSpace);
12123   verifyFormat("auto i = std::make_unique<int>(5);", NoSpace);
12124   verifyFormat("size_t x = sizeof(x);", NoSpace);
12125   verifyFormat("auto f(int x) -> decltype(x);", NoSpace);
12126   verifyFormat("auto f(int x) -> typeof(x);", NoSpace);
12127   verifyFormat("auto f(int x) -> _Atomic(x);", NoSpace);
12128   verifyFormat("auto f(int x) -> __underlying_type(x);", NoSpace);
12129   verifyFormat("int f(T x) noexcept(x.create());", NoSpace);
12130   verifyFormat("alignas(128) char a[128];", NoSpace);
12131   verifyFormat("size_t x = alignof(MyType);", NoSpace);
12132   verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace);
12133   verifyFormat("int f() throw(Deprecated);", NoSpace);
12134   verifyFormat("typedef void (*cb)(int);", NoSpace);
12135   verifyFormat("T A::operator()();", NoSpace);
12136   verifyFormat("X A::operator++(T);", NoSpace);
12137   verifyFormat("auto lambda = []() { return 0; };", NoSpace);
12138 
12139   FormatStyle Space = getLLVMStyle();
12140   Space.SpaceBeforeParens = FormatStyle::SBPO_Always;
12141 
12142   verifyFormat("int f ();", Space);
12143   verifyFormat("void f (int a, T b) {\n"
12144                "  while (true)\n"
12145                "    continue;\n"
12146                "}",
12147                Space);
12148   verifyFormat("if (true)\n"
12149                "  f ();\n"
12150                "else if (true)\n"
12151                "  f ();",
12152                Space);
12153   verifyFormat("do {\n"
12154                "  do_something ();\n"
12155                "} while (something ());",
12156                Space);
12157   verifyFormat("switch (x) {\n"
12158                "default:\n"
12159                "  break;\n"
12160                "}",
12161                Space);
12162   verifyFormat("A::A () : a (1) {}", Space);
12163   verifyFormat("void f () __attribute__ ((asdf));", Space);
12164   verifyFormat("*(&a + 1);\n"
12165                "&((&a)[1]);\n"
12166                "a[(b + c) * d];\n"
12167                "(((a + 1) * 2) + 3) * 4;",
12168                Space);
12169   verifyFormat("#define A(x) x", Space);
12170   verifyFormat("#define A (x) x", Space);
12171   verifyFormat("#if defined(x)\n"
12172                "#endif",
12173                Space);
12174   verifyFormat("auto i = std::make_unique<int> (5);", Space);
12175   verifyFormat("size_t x = sizeof (x);", Space);
12176   verifyFormat("auto f (int x) -> decltype (x);", Space);
12177   verifyFormat("auto f (int x) -> typeof (x);", Space);
12178   verifyFormat("auto f (int x) -> _Atomic (x);", Space);
12179   verifyFormat("auto f (int x) -> __underlying_type (x);", Space);
12180   verifyFormat("int f (T x) noexcept (x.create ());", Space);
12181   verifyFormat("alignas (128) char a[128];", Space);
12182   verifyFormat("size_t x = alignof (MyType);", Space);
12183   verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space);
12184   verifyFormat("int f () throw (Deprecated);", Space);
12185   verifyFormat("typedef void (*cb) (int);", Space);
12186   verifyFormat("T A::operator() ();", Space);
12187   verifyFormat("X A::operator++ (T);", Space);
12188   verifyFormat("auto lambda = [] () { return 0; };", Space);
12189   verifyFormat("int x = int (y);", Space);
12190 
12191   FormatStyle SomeSpace = getLLVMStyle();
12192   SomeSpace.SpaceBeforeParens = FormatStyle::SBPO_NonEmptyParentheses;
12193 
12194   verifyFormat("[]() -> float {}", SomeSpace);
12195   verifyFormat("[] (auto foo) {}", SomeSpace);
12196   verifyFormat("[foo]() -> int {}", SomeSpace);
12197   verifyFormat("int f();", SomeSpace);
12198   verifyFormat("void f (int a, T b) {\n"
12199                "  while (true)\n"
12200                "    continue;\n"
12201                "}",
12202                SomeSpace);
12203   verifyFormat("if (true)\n"
12204                "  f();\n"
12205                "else if (true)\n"
12206                "  f();",
12207                SomeSpace);
12208   verifyFormat("do {\n"
12209                "  do_something();\n"
12210                "} while (something());",
12211                SomeSpace);
12212   verifyFormat("switch (x) {\n"
12213                "default:\n"
12214                "  break;\n"
12215                "}",
12216                SomeSpace);
12217   verifyFormat("A::A() : a (1) {}", SomeSpace);
12218   verifyFormat("void f() __attribute__ ((asdf));", SomeSpace);
12219   verifyFormat("*(&a + 1);\n"
12220                "&((&a)[1]);\n"
12221                "a[(b + c) * d];\n"
12222                "(((a + 1) * 2) + 3) * 4;",
12223                SomeSpace);
12224   verifyFormat("#define A(x) x", SomeSpace);
12225   verifyFormat("#define A (x) x", SomeSpace);
12226   verifyFormat("#if defined(x)\n"
12227                "#endif",
12228                SomeSpace);
12229   verifyFormat("auto i = std::make_unique<int> (5);", SomeSpace);
12230   verifyFormat("size_t x = sizeof (x);", SomeSpace);
12231   verifyFormat("auto f (int x) -> decltype (x);", SomeSpace);
12232   verifyFormat("auto f (int x) -> typeof (x);", SomeSpace);
12233   verifyFormat("auto f (int x) -> _Atomic (x);", SomeSpace);
12234   verifyFormat("auto f (int x) -> __underlying_type (x);", SomeSpace);
12235   verifyFormat("int f (T x) noexcept (x.create());", SomeSpace);
12236   verifyFormat("alignas (128) char a[128];", SomeSpace);
12237   verifyFormat("size_t x = alignof (MyType);", SomeSpace);
12238   verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");",
12239                SomeSpace);
12240   verifyFormat("int f() throw (Deprecated);", SomeSpace);
12241   verifyFormat("typedef void (*cb) (int);", SomeSpace);
12242   verifyFormat("T A::operator()();", SomeSpace);
12243   verifyFormat("X A::operator++ (T);", SomeSpace);
12244   verifyFormat("int x = int (y);", SomeSpace);
12245   verifyFormat("auto lambda = []() { return 0; };", SomeSpace);
12246 }
12247 
12248 TEST_F(FormatTest, SpaceAfterLogicalNot) {
12249   FormatStyle Spaces = getLLVMStyle();
12250   Spaces.SpaceAfterLogicalNot = true;
12251 
12252   verifyFormat("bool x = ! y", Spaces);
12253   verifyFormat("if (! isFailure())", Spaces);
12254   verifyFormat("if (! (a && b))", Spaces);
12255   verifyFormat("\"Error!\"", Spaces);
12256   verifyFormat("! ! x", Spaces);
12257 }
12258 
12259 TEST_F(FormatTest, ConfigurableSpacesInParentheses) {
12260   FormatStyle Spaces = getLLVMStyle();
12261 
12262   Spaces.SpacesInParentheses = true;
12263   verifyFormat("do_something( ::globalVar );", Spaces);
12264   verifyFormat("call( x, y, z );", Spaces);
12265   verifyFormat("call();", Spaces);
12266   verifyFormat("std::function<void( int, int )> callback;", Spaces);
12267   verifyFormat("void inFunction() { std::function<void( int, int )> fct; }",
12268                Spaces);
12269   verifyFormat("while ( (bool)1 )\n"
12270                "  continue;",
12271                Spaces);
12272   verifyFormat("for ( ;; )\n"
12273                "  continue;",
12274                Spaces);
12275   verifyFormat("if ( true )\n"
12276                "  f();\n"
12277                "else if ( true )\n"
12278                "  f();",
12279                Spaces);
12280   verifyFormat("do {\n"
12281                "  do_something( (int)i );\n"
12282                "} while ( something() );",
12283                Spaces);
12284   verifyFormat("switch ( x ) {\n"
12285                "default:\n"
12286                "  break;\n"
12287                "}",
12288                Spaces);
12289 
12290   Spaces.SpacesInParentheses = false;
12291   Spaces.SpacesInCStyleCastParentheses = true;
12292   verifyFormat("Type *A = ( Type * )P;", Spaces);
12293   verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces);
12294   verifyFormat("x = ( int32 )y;", Spaces);
12295   verifyFormat("int a = ( int )(2.0f);", Spaces);
12296   verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces);
12297   verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces);
12298   verifyFormat("#define x (( int )-1)", Spaces);
12299 
12300   // Run the first set of tests again with:
12301   Spaces.SpacesInParentheses = false;
12302   Spaces.SpaceInEmptyParentheses = true;
12303   Spaces.SpacesInCStyleCastParentheses = true;
12304   verifyFormat("call(x, y, z);", Spaces);
12305   verifyFormat("call( );", Spaces);
12306   verifyFormat("std::function<void(int, int)> callback;", Spaces);
12307   verifyFormat("while (( bool )1)\n"
12308                "  continue;",
12309                Spaces);
12310   verifyFormat("for (;;)\n"
12311                "  continue;",
12312                Spaces);
12313   verifyFormat("if (true)\n"
12314                "  f( );\n"
12315                "else if (true)\n"
12316                "  f( );",
12317                Spaces);
12318   verifyFormat("do {\n"
12319                "  do_something(( int )i);\n"
12320                "} while (something( ));",
12321                Spaces);
12322   verifyFormat("switch (x) {\n"
12323                "default:\n"
12324                "  break;\n"
12325                "}",
12326                Spaces);
12327 
12328   // Run the first set of tests again with:
12329   Spaces.SpaceAfterCStyleCast = true;
12330   verifyFormat("call(x, y, z);", Spaces);
12331   verifyFormat("call( );", Spaces);
12332   verifyFormat("std::function<void(int, int)> callback;", Spaces);
12333   verifyFormat("while (( bool ) 1)\n"
12334                "  continue;",
12335                Spaces);
12336   verifyFormat("for (;;)\n"
12337                "  continue;",
12338                Spaces);
12339   verifyFormat("if (true)\n"
12340                "  f( );\n"
12341                "else if (true)\n"
12342                "  f( );",
12343                Spaces);
12344   verifyFormat("do {\n"
12345                "  do_something(( int ) i);\n"
12346                "} while (something( ));",
12347                Spaces);
12348   verifyFormat("switch (x) {\n"
12349                "default:\n"
12350                "  break;\n"
12351                "}",
12352                Spaces);
12353 
12354   // Run subset of tests again with:
12355   Spaces.SpacesInCStyleCastParentheses = false;
12356   Spaces.SpaceAfterCStyleCast = true;
12357   verifyFormat("while ((bool) 1)\n"
12358                "  continue;",
12359                Spaces);
12360   verifyFormat("do {\n"
12361                "  do_something((int) i);\n"
12362                "} while (something( ));",
12363                Spaces);
12364 
12365   verifyFormat("size_t idx = (size_t) (ptr - ((char *) file));", Spaces);
12366   verifyFormat("size_t idx = (size_t) a;", Spaces);
12367   verifyFormat("size_t idx = (size_t) (a - 1);", Spaces);
12368   verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
12369   verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
12370   verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
12371   Spaces.SpaceAfterCStyleCast = false;
12372   verifyFormat("size_t idx = (size_t)(ptr - ((char *)file));", Spaces);
12373   verifyFormat("size_t idx = (size_t)a;", Spaces);
12374   verifyFormat("size_t idx = (size_t)(a - 1);", Spaces);
12375   verifyFormat("size_t idx = (a->*foo)(a - 1);", Spaces);
12376   verifyFormat("size_t idx = (a->foo)(a - 1);", Spaces);
12377   verifyFormat("size_t idx = (*foo)(a - 1);", Spaces);
12378 }
12379 
12380 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) {
12381   verifyFormat("int a[5];");
12382   verifyFormat("a[3] += 42;");
12383 
12384   FormatStyle Spaces = getLLVMStyle();
12385   Spaces.SpacesInSquareBrackets = true;
12386   // Not lambdas.
12387   verifyFormat("int a[ 5 ];", Spaces);
12388   verifyFormat("a[ 3 ] += 42;", Spaces);
12389   verifyFormat("constexpr char hello[]{\"hello\"};", Spaces);
12390   verifyFormat("double &operator[](int i) { return 0; }\n"
12391                "int i;",
12392                Spaces);
12393   verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces);
12394   verifyFormat("int i = a[ a ][ a ]->f();", Spaces);
12395   verifyFormat("int i = (*b)[ a ]->f();", Spaces);
12396   // Lambdas.
12397   verifyFormat("int c = []() -> int { return 2; }();\n", Spaces);
12398   verifyFormat("return [ i, args... ] {};", Spaces);
12399   verifyFormat("int foo = [ &bar ]() {};", Spaces);
12400   verifyFormat("int foo = [ = ]() {};", Spaces);
12401   verifyFormat("int foo = [ & ]() {};", Spaces);
12402   verifyFormat("int foo = [ =, &bar ]() {};", Spaces);
12403   verifyFormat("int foo = [ &bar, = ]() {};", Spaces);
12404 }
12405 
12406 TEST_F(FormatTest, ConfigurableSpaceBeforeBrackets) {
12407   FormatStyle NoSpaceStyle = getLLVMStyle();
12408   verifyFormat("int a[5];", NoSpaceStyle);
12409   verifyFormat("a[3] += 42;", NoSpaceStyle);
12410 
12411   verifyFormat("int a[1];", NoSpaceStyle);
12412   verifyFormat("int 1 [a];", NoSpaceStyle);
12413   verifyFormat("int a[1][2];", NoSpaceStyle);
12414   verifyFormat("a[7] = 5;", NoSpaceStyle);
12415   verifyFormat("int a = (f())[23];", NoSpaceStyle);
12416   verifyFormat("f([] {})", NoSpaceStyle);
12417 
12418   FormatStyle Space = getLLVMStyle();
12419   Space.SpaceBeforeSquareBrackets = true;
12420   verifyFormat("int c = []() -> int { return 2; }();\n", Space);
12421   verifyFormat("return [i, args...] {};", Space);
12422 
12423   verifyFormat("int a [5];", Space);
12424   verifyFormat("a [3] += 42;", Space);
12425   verifyFormat("constexpr char hello []{\"hello\"};", Space);
12426   verifyFormat("double &operator[](int i) { return 0; }\n"
12427                "int i;",
12428                Space);
12429   verifyFormat("std::unique_ptr<int []> foo() {}", Space);
12430   verifyFormat("int i = a [a][a]->f();", Space);
12431   verifyFormat("int i = (*b) [a]->f();", Space);
12432 
12433   verifyFormat("int a [1];", Space);
12434   verifyFormat("int 1 [a];", Space);
12435   verifyFormat("int a [1][2];", Space);
12436   verifyFormat("a [7] = 5;", Space);
12437   verifyFormat("int a = (f()) [23];", Space);
12438   verifyFormat("f([] {})", Space);
12439 }
12440 
12441 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) {
12442   verifyFormat("int a = 5;");
12443   verifyFormat("a += 42;");
12444   verifyFormat("a or_eq 8;");
12445 
12446   FormatStyle Spaces = getLLVMStyle();
12447   Spaces.SpaceBeforeAssignmentOperators = false;
12448   verifyFormat("int a= 5;", Spaces);
12449   verifyFormat("a+= 42;", Spaces);
12450   verifyFormat("a or_eq 8;", Spaces);
12451 }
12452 
12453 TEST_F(FormatTest, ConfigurableSpaceBeforeColon) {
12454   verifyFormat("class Foo : public Bar {};");
12455   verifyFormat("Foo::Foo() : foo(1) {}");
12456   verifyFormat("for (auto a : b) {\n}");
12457   verifyFormat("int x = a ? b : c;");
12458   verifyFormat("{\n"
12459                "label0:\n"
12460                "  int x = 0;\n"
12461                "}");
12462   verifyFormat("switch (x) {\n"
12463                "case 1:\n"
12464                "default:\n"
12465                "}");
12466   verifyFormat("switch (allBraces) {\n"
12467                "case 1: {\n"
12468                "  break;\n"
12469                "}\n"
12470                "case 2: {\n"
12471                "  [[fallthrough]];\n"
12472                "}\n"
12473                "default: {\n"
12474                "  break;\n"
12475                "}\n"
12476                "}");
12477 
12478   FormatStyle CtorInitializerStyle = getLLVMStyleWithColumns(30);
12479   CtorInitializerStyle.SpaceBeforeCtorInitializerColon = false;
12480   verifyFormat("class Foo : public Bar {};", CtorInitializerStyle);
12481   verifyFormat("Foo::Foo(): foo(1) {}", CtorInitializerStyle);
12482   verifyFormat("for (auto a : b) {\n}", CtorInitializerStyle);
12483   verifyFormat("int x = a ? b : c;", CtorInitializerStyle);
12484   verifyFormat("{\n"
12485                "label1:\n"
12486                "  int x = 0;\n"
12487                "}",
12488                CtorInitializerStyle);
12489   verifyFormat("switch (x) {\n"
12490                "case 1:\n"
12491                "default:\n"
12492                "}",
12493                CtorInitializerStyle);
12494   verifyFormat("switch (allBraces) {\n"
12495                "case 1: {\n"
12496                "  break;\n"
12497                "}\n"
12498                "case 2: {\n"
12499                "  [[fallthrough]];\n"
12500                "}\n"
12501                "default: {\n"
12502                "  break;\n"
12503                "}\n"
12504                "}",
12505                CtorInitializerStyle);
12506   CtorInitializerStyle.BreakConstructorInitializers =
12507       FormatStyle::BCIS_AfterColon;
12508   verifyFormat("Fooooooooooo::Fooooooooooo():\n"
12509                "    aaaaaaaaaaaaaaaa(1),\n"
12510                "    bbbbbbbbbbbbbbbb(2) {}",
12511                CtorInitializerStyle);
12512   CtorInitializerStyle.BreakConstructorInitializers =
12513       FormatStyle::BCIS_BeforeComma;
12514   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
12515                "    : aaaaaaaaaaaaaaaa(1)\n"
12516                "    , bbbbbbbbbbbbbbbb(2) {}",
12517                CtorInitializerStyle);
12518   CtorInitializerStyle.BreakConstructorInitializers =
12519       FormatStyle::BCIS_BeforeColon;
12520   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
12521                "    : aaaaaaaaaaaaaaaa(1),\n"
12522                "      bbbbbbbbbbbbbbbb(2) {}",
12523                CtorInitializerStyle);
12524   CtorInitializerStyle.ConstructorInitializerIndentWidth = 0;
12525   verifyFormat("Fooooooooooo::Fooooooooooo()\n"
12526                ": aaaaaaaaaaaaaaaa(1),\n"
12527                "  bbbbbbbbbbbbbbbb(2) {}",
12528                CtorInitializerStyle);
12529 
12530   FormatStyle InheritanceStyle = getLLVMStyleWithColumns(30);
12531   InheritanceStyle.SpaceBeforeInheritanceColon = false;
12532   verifyFormat("class Foo: public Bar {};", InheritanceStyle);
12533   verifyFormat("Foo::Foo() : foo(1) {}", InheritanceStyle);
12534   verifyFormat("for (auto a : b) {\n}", InheritanceStyle);
12535   verifyFormat("int x = a ? b : c;", InheritanceStyle);
12536   verifyFormat("{\n"
12537                "label2:\n"
12538                "  int x = 0;\n"
12539                "}",
12540                InheritanceStyle);
12541   verifyFormat("switch (x) {\n"
12542                "case 1:\n"
12543                "default:\n"
12544                "}",
12545                InheritanceStyle);
12546   verifyFormat("switch (allBraces) {\n"
12547                "case 1: {\n"
12548                "  break;\n"
12549                "}\n"
12550                "case 2: {\n"
12551                "  [[fallthrough]];\n"
12552                "}\n"
12553                "default: {\n"
12554                "  break;\n"
12555                "}\n"
12556                "}",
12557                InheritanceStyle);
12558   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_AfterColon;
12559   verifyFormat("class Foooooooooooooooooooooo:\n"
12560                "    public aaaaaaaaaaaaaaaaaa,\n"
12561                "    public bbbbbbbbbbbbbbbbbb {\n"
12562                "}",
12563                InheritanceStyle);
12564   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_BeforeComma;
12565   verifyFormat("class Foooooooooooooooooooooo\n"
12566                "    : public aaaaaaaaaaaaaaaaaa\n"
12567                "    , public bbbbbbbbbbbbbbbbbb {\n"
12568                "}",
12569                InheritanceStyle);
12570   InheritanceStyle.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
12571   verifyFormat("class Foooooooooooooooooooooo\n"
12572                "    : public aaaaaaaaaaaaaaaaaa,\n"
12573                "      public bbbbbbbbbbbbbbbbbb {\n"
12574                "}",
12575                InheritanceStyle);
12576   InheritanceStyle.ConstructorInitializerIndentWidth = 0;
12577   verifyFormat("class Foooooooooooooooooooooo\n"
12578                ": public aaaaaaaaaaaaaaaaaa,\n"
12579                "  public bbbbbbbbbbbbbbbbbb {}",
12580                InheritanceStyle);
12581 
12582   FormatStyle ForLoopStyle = getLLVMStyle();
12583   ForLoopStyle.SpaceBeforeRangeBasedForLoopColon = false;
12584   verifyFormat("class Foo : public Bar {};", ForLoopStyle);
12585   verifyFormat("Foo::Foo() : foo(1) {}", ForLoopStyle);
12586   verifyFormat("for (auto a: b) {\n}", ForLoopStyle);
12587   verifyFormat("int x = a ? b : c;", ForLoopStyle);
12588   verifyFormat("{\n"
12589                "label2:\n"
12590                "  int x = 0;\n"
12591                "}",
12592                ForLoopStyle);
12593   verifyFormat("switch (x) {\n"
12594                "case 1:\n"
12595                "default:\n"
12596                "}",
12597                ForLoopStyle);
12598   verifyFormat("switch (allBraces) {\n"
12599                "case 1: {\n"
12600                "  break;\n"
12601                "}\n"
12602                "case 2: {\n"
12603                "  [[fallthrough]];\n"
12604                "}\n"
12605                "default: {\n"
12606                "  break;\n"
12607                "}\n"
12608                "}",
12609                ForLoopStyle);
12610 
12611   FormatStyle CaseStyle = getLLVMStyle();
12612   CaseStyle.SpaceBeforeCaseColon = true;
12613   verifyFormat("class Foo : public Bar {};", CaseStyle);
12614   verifyFormat("Foo::Foo() : foo(1) {}", CaseStyle);
12615   verifyFormat("for (auto a : b) {\n}", CaseStyle);
12616   verifyFormat("int x = a ? b : c;", CaseStyle);
12617   verifyFormat("switch (x) {\n"
12618                "case 1 :\n"
12619                "default :\n"
12620                "}",
12621                CaseStyle);
12622   verifyFormat("switch (allBraces) {\n"
12623                "case 1 : {\n"
12624                "  break;\n"
12625                "}\n"
12626                "case 2 : {\n"
12627                "  [[fallthrough]];\n"
12628                "}\n"
12629                "default : {\n"
12630                "  break;\n"
12631                "}\n"
12632                "}",
12633                CaseStyle);
12634 
12635   FormatStyle NoSpaceStyle = getLLVMStyle();
12636   EXPECT_EQ(NoSpaceStyle.SpaceBeforeCaseColon, false);
12637   NoSpaceStyle.SpaceBeforeCtorInitializerColon = false;
12638   NoSpaceStyle.SpaceBeforeInheritanceColon = false;
12639   NoSpaceStyle.SpaceBeforeRangeBasedForLoopColon = false;
12640   verifyFormat("class Foo: public Bar {};", NoSpaceStyle);
12641   verifyFormat("Foo::Foo(): foo(1) {}", NoSpaceStyle);
12642   verifyFormat("for (auto a: b) {\n}", NoSpaceStyle);
12643   verifyFormat("int x = a ? b : c;", NoSpaceStyle);
12644   verifyFormat("{\n"
12645                "label3:\n"
12646                "  int x = 0;\n"
12647                "}",
12648                NoSpaceStyle);
12649   verifyFormat("switch (x) {\n"
12650                "case 1:\n"
12651                "default:\n"
12652                "}",
12653                NoSpaceStyle);
12654   verifyFormat("switch (allBraces) {\n"
12655                "case 1: {\n"
12656                "  break;\n"
12657                "}\n"
12658                "case 2: {\n"
12659                "  [[fallthrough]];\n"
12660                "}\n"
12661                "default: {\n"
12662                "  break;\n"
12663                "}\n"
12664                "}",
12665                NoSpaceStyle);
12666 
12667   FormatStyle InvertedSpaceStyle = getLLVMStyle();
12668   InvertedSpaceStyle.SpaceBeforeCaseColon = true;
12669   InvertedSpaceStyle.SpaceBeforeCtorInitializerColon = false;
12670   InvertedSpaceStyle.SpaceBeforeInheritanceColon = false;
12671   InvertedSpaceStyle.SpaceBeforeRangeBasedForLoopColon = false;
12672   verifyFormat("class Foo: public Bar {};", InvertedSpaceStyle);
12673   verifyFormat("Foo::Foo(): foo(1) {}", InvertedSpaceStyle);
12674   verifyFormat("for (auto a: b) {\n}", InvertedSpaceStyle);
12675   verifyFormat("int x = a ? b : c;", InvertedSpaceStyle);
12676   verifyFormat("{\n"
12677                "label3:\n"
12678                "  int x = 0;\n"
12679                "}",
12680                InvertedSpaceStyle);
12681   verifyFormat("switch (x) {\n"
12682                "case 1 :\n"
12683                "case 2 : {\n"
12684                "  break;\n"
12685                "}\n"
12686                "default :\n"
12687                "  break;\n"
12688                "}",
12689                InvertedSpaceStyle);
12690   verifyFormat("switch (allBraces) {\n"
12691                "case 1 : {\n"
12692                "  break;\n"
12693                "}\n"
12694                "case 2 : {\n"
12695                "  [[fallthrough]];\n"
12696                "}\n"
12697                "default : {\n"
12698                "  break;\n"
12699                "}\n"
12700                "}",
12701                InvertedSpaceStyle);
12702 }
12703 
12704 TEST_F(FormatTest, ConfigurableSpaceAroundPointerQualifiers) {
12705   FormatStyle Style = getLLVMStyle();
12706 
12707   Style.PointerAlignment = FormatStyle::PAS_Left;
12708   Style.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Default;
12709   verifyFormat("void* const* x = NULL;", Style);
12710 
12711 #define verifyQualifierSpaces(Code, Pointers, Qualifiers)                      \
12712   do {                                                                         \
12713     Style.PointerAlignment = FormatStyle::Pointers;                            \
12714     Style.SpaceAroundPointerQualifiers = FormatStyle::Qualifiers;              \
12715     verifyFormat(Code, Style);                                                 \
12716   } while (false)
12717 
12718   verifyQualifierSpaces("void* const* x = NULL;", PAS_Left, SAPQ_Default);
12719   verifyQualifierSpaces("void *const *x = NULL;", PAS_Right, SAPQ_Default);
12720   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Default);
12721 
12722   verifyQualifierSpaces("void* const* x = NULL;", PAS_Left, SAPQ_Before);
12723   verifyQualifierSpaces("void * const *x = NULL;", PAS_Right, SAPQ_Before);
12724   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Before);
12725 
12726   verifyQualifierSpaces("void* const * x = NULL;", PAS_Left, SAPQ_After);
12727   verifyQualifierSpaces("void *const *x = NULL;", PAS_Right, SAPQ_After);
12728   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_After);
12729 
12730   verifyQualifierSpaces("void* const * x = NULL;", PAS_Left, SAPQ_Both);
12731   verifyQualifierSpaces("void * const *x = NULL;", PAS_Right, SAPQ_Both);
12732   verifyQualifierSpaces("void * const * x = NULL;", PAS_Middle, SAPQ_Both);
12733 
12734 #undef verifyQualifierSpaces
12735 
12736   FormatStyle Spaces = getLLVMStyle();
12737   Spaces.AttributeMacros.push_back("qualified");
12738   Spaces.PointerAlignment = FormatStyle::PAS_Right;
12739   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Default;
12740   verifyFormat("SomeType *volatile *a = NULL;", Spaces);
12741   verifyFormat("SomeType *__attribute__((attr)) *a = NULL;", Spaces);
12742   verifyFormat("std::vector<SomeType *const *> x;", Spaces);
12743   verifyFormat("std::vector<SomeType *qualified *> x;", Spaces);
12744   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12745   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Before;
12746   verifyFormat("SomeType * volatile *a = NULL;", Spaces);
12747   verifyFormat("SomeType * __attribute__((attr)) *a = NULL;", Spaces);
12748   verifyFormat("std::vector<SomeType * const *> x;", Spaces);
12749   verifyFormat("std::vector<SomeType * qualified *> x;", Spaces);
12750   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12751 
12752   // Check that SAPQ_Before doesn't result in extra spaces for PAS_Left.
12753   Spaces.PointerAlignment = FormatStyle::PAS_Left;
12754   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Before;
12755   verifyFormat("SomeType* volatile* a = NULL;", Spaces);
12756   verifyFormat("SomeType* __attribute__((attr))* a = NULL;", Spaces);
12757   verifyFormat("std::vector<SomeType* const*> x;", Spaces);
12758   verifyFormat("std::vector<SomeType* qualified*> x;", Spaces);
12759   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12760   // However, setting it to SAPQ_After should add spaces after __attribute, etc.
12761   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_After;
12762   verifyFormat("SomeType* volatile * a = NULL;", Spaces);
12763   verifyFormat("SomeType* __attribute__((attr)) * a = NULL;", Spaces);
12764   verifyFormat("std::vector<SomeType* const *> x;", Spaces);
12765   verifyFormat("std::vector<SomeType* qualified *> x;", Spaces);
12766   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12767 
12768   // PAS_Middle should not have any noticeable changes even for SAPQ_Both
12769   Spaces.PointerAlignment = FormatStyle::PAS_Middle;
12770   Spaces.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_After;
12771   verifyFormat("SomeType * volatile * a = NULL;", Spaces);
12772   verifyFormat("SomeType * __attribute__((attr)) * a = NULL;", Spaces);
12773   verifyFormat("std::vector<SomeType * const *> x;", Spaces);
12774   verifyFormat("std::vector<SomeType * qualified *> x;", Spaces);
12775   verifyFormat("std::vector<SomeVar * NotAQualifier> x;", Spaces);
12776 }
12777 
12778 TEST_F(FormatTest, AlignConsecutiveMacros) {
12779   FormatStyle Style = getLLVMStyle();
12780   Style.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
12781   Style.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
12782   Style.AlignConsecutiveMacros = FormatStyle::ACS_None;
12783 
12784   verifyFormat("#define a 3\n"
12785                "#define bbbb 4\n"
12786                "#define ccc (5)",
12787                Style);
12788 
12789   verifyFormat("#define f(x) (x * x)\n"
12790                "#define fff(x, y, z) (x * y + z)\n"
12791                "#define ffff(x, y) (x - y)",
12792                Style);
12793 
12794   verifyFormat("#define foo(x, y) (x + y)\n"
12795                "#define bar (5, 6)(2 + 2)",
12796                Style);
12797 
12798   verifyFormat("#define a 3\n"
12799                "#define bbbb 4\n"
12800                "#define ccc (5)\n"
12801                "#define f(x) (x * x)\n"
12802                "#define fff(x, y, z) (x * y + z)\n"
12803                "#define ffff(x, y) (x - y)",
12804                Style);
12805 
12806   Style.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
12807   verifyFormat("#define a    3\n"
12808                "#define bbbb 4\n"
12809                "#define ccc  (5)",
12810                Style);
12811 
12812   verifyFormat("#define f(x)         (x * x)\n"
12813                "#define fff(x, y, z) (x * y + z)\n"
12814                "#define ffff(x, y)   (x - y)",
12815                Style);
12816 
12817   verifyFormat("#define foo(x, y) (x + y)\n"
12818                "#define bar       (5, 6)(2 + 2)",
12819                Style);
12820 
12821   verifyFormat("#define a            3\n"
12822                "#define bbbb         4\n"
12823                "#define ccc          (5)\n"
12824                "#define f(x)         (x * x)\n"
12825                "#define fff(x, y, z) (x * y + z)\n"
12826                "#define ffff(x, y)   (x - y)",
12827                Style);
12828 
12829   verifyFormat("#define a         5\n"
12830                "#define foo(x, y) (x + y)\n"
12831                "#define CCC       (6)\n"
12832                "auto lambda = []() {\n"
12833                "  auto  ii = 0;\n"
12834                "  float j  = 0;\n"
12835                "  return 0;\n"
12836                "};\n"
12837                "int   i  = 0;\n"
12838                "float i2 = 0;\n"
12839                "auto  v  = type{\n"
12840                "    i = 1,   //\n"
12841                "    (i = 2), //\n"
12842                "    i = 3    //\n"
12843                "};",
12844                Style);
12845 
12846   Style.AlignConsecutiveMacros = FormatStyle::ACS_None;
12847   Style.ColumnLimit = 20;
12848 
12849   verifyFormat("#define a          \\\n"
12850                "  \"aabbbbbbbbbbbb\"\n"
12851                "#define D          \\\n"
12852                "  \"aabbbbbbbbbbbb\" \\\n"
12853                "  \"ccddeeeeeeeee\"\n"
12854                "#define B          \\\n"
12855                "  \"QQQQQQQQQQQQQ\"  \\\n"
12856                "  \"FFFFFFFFFFFFF\"  \\\n"
12857                "  \"LLLLLLLL\"\n",
12858                Style);
12859 
12860   Style.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
12861   verifyFormat("#define a          \\\n"
12862                "  \"aabbbbbbbbbbbb\"\n"
12863                "#define D          \\\n"
12864                "  \"aabbbbbbbbbbbb\" \\\n"
12865                "  \"ccddeeeeeeeee\"\n"
12866                "#define B          \\\n"
12867                "  \"QQQQQQQQQQQQQ\"  \\\n"
12868                "  \"FFFFFFFFFFFFF\"  \\\n"
12869                "  \"LLLLLLLL\"\n",
12870                Style);
12871 
12872   // Test across comments
12873   Style.MaxEmptyLinesToKeep = 10;
12874   Style.ReflowComments = false;
12875   Style.AlignConsecutiveMacros = FormatStyle::ACS_AcrossComments;
12876   EXPECT_EQ("#define a    3\n"
12877             "// line comment\n"
12878             "#define bbbb 4\n"
12879             "#define ccc  (5)",
12880             format("#define a 3\n"
12881                    "// line comment\n"
12882                    "#define bbbb 4\n"
12883                    "#define ccc (5)",
12884                    Style));
12885 
12886   EXPECT_EQ("#define a    3\n"
12887             "/* block comment */\n"
12888             "#define bbbb 4\n"
12889             "#define ccc  (5)",
12890             format("#define a  3\n"
12891                    "/* block comment */\n"
12892                    "#define bbbb 4\n"
12893                    "#define ccc (5)",
12894                    Style));
12895 
12896   EXPECT_EQ("#define a    3\n"
12897             "/* multi-line *\n"
12898             " * block comment */\n"
12899             "#define bbbb 4\n"
12900             "#define ccc  (5)",
12901             format("#define a 3\n"
12902                    "/* multi-line *\n"
12903                    " * block comment */\n"
12904                    "#define bbbb 4\n"
12905                    "#define ccc (5)",
12906                    Style));
12907 
12908   EXPECT_EQ("#define a    3\n"
12909             "// multi-line line comment\n"
12910             "//\n"
12911             "#define bbbb 4\n"
12912             "#define ccc  (5)",
12913             format("#define a  3\n"
12914                    "// multi-line line comment\n"
12915                    "//\n"
12916                    "#define bbbb 4\n"
12917                    "#define ccc (5)",
12918                    Style));
12919 
12920   EXPECT_EQ("#define a 3\n"
12921             "// empty lines still break.\n"
12922             "\n"
12923             "#define bbbb 4\n"
12924             "#define ccc  (5)",
12925             format("#define a     3\n"
12926                    "// empty lines still break.\n"
12927                    "\n"
12928                    "#define bbbb     4\n"
12929                    "#define ccc  (5)",
12930                    Style));
12931 
12932   // Test across empty lines
12933   Style.AlignConsecutiveMacros = FormatStyle::ACS_AcrossEmptyLines;
12934   EXPECT_EQ("#define a    3\n"
12935             "\n"
12936             "#define bbbb 4\n"
12937             "#define ccc  (5)",
12938             format("#define a 3\n"
12939                    "\n"
12940                    "#define bbbb 4\n"
12941                    "#define ccc (5)",
12942                    Style));
12943 
12944   EXPECT_EQ("#define a    3\n"
12945             "\n"
12946             "\n"
12947             "\n"
12948             "#define bbbb 4\n"
12949             "#define ccc  (5)",
12950             format("#define a        3\n"
12951                    "\n"
12952                    "\n"
12953                    "\n"
12954                    "#define bbbb 4\n"
12955                    "#define ccc (5)",
12956                    Style));
12957 
12958   EXPECT_EQ("#define a 3\n"
12959             "// comments should break alignment\n"
12960             "//\n"
12961             "#define bbbb 4\n"
12962             "#define ccc  (5)",
12963             format("#define a        3\n"
12964                    "// comments should break alignment\n"
12965                    "//\n"
12966                    "#define bbbb 4\n"
12967                    "#define ccc (5)",
12968                    Style));
12969 
12970   // Test across empty lines and comments
12971   Style.AlignConsecutiveMacros = FormatStyle::ACS_AcrossEmptyLinesAndComments;
12972   verifyFormat("#define a    3\n"
12973                "\n"
12974                "// line comment\n"
12975                "#define bbbb 4\n"
12976                "#define ccc  (5)",
12977                Style);
12978 
12979   EXPECT_EQ("#define a    3\n"
12980             "\n"
12981             "\n"
12982             "/* multi-line *\n"
12983             " * block comment */\n"
12984             "\n"
12985             "\n"
12986             "#define bbbb 4\n"
12987             "#define ccc  (5)",
12988             format("#define a 3\n"
12989                    "\n"
12990                    "\n"
12991                    "/* multi-line *\n"
12992                    " * block comment */\n"
12993                    "\n"
12994                    "\n"
12995                    "#define bbbb 4\n"
12996                    "#define ccc (5)",
12997                    Style));
12998 
12999   EXPECT_EQ("#define a    3\n"
13000             "\n"
13001             "\n"
13002             "/* multi-line *\n"
13003             " * block comment */\n"
13004             "\n"
13005             "\n"
13006             "#define bbbb 4\n"
13007             "#define ccc  (5)",
13008             format("#define a 3\n"
13009                    "\n"
13010                    "\n"
13011                    "/* multi-line *\n"
13012                    " * block comment */\n"
13013                    "\n"
13014                    "\n"
13015                    "#define bbbb 4\n"
13016                    "#define ccc       (5)",
13017                    Style));
13018 }
13019 
13020 TEST_F(FormatTest, AlignConsecutiveAssignmentsAcrossEmptyLines) {
13021   FormatStyle Alignment = getLLVMStyle();
13022   Alignment.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
13023   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_AcrossEmptyLines;
13024 
13025   Alignment.MaxEmptyLinesToKeep = 10;
13026   /* Test alignment across empty lines */
13027   EXPECT_EQ("int a           = 5;\n"
13028             "\n"
13029             "int oneTwoThree = 123;",
13030             format("int a       = 5;\n"
13031                    "\n"
13032                    "int oneTwoThree= 123;",
13033                    Alignment));
13034   EXPECT_EQ("int a           = 5;\n"
13035             "int one         = 1;\n"
13036             "\n"
13037             "int oneTwoThree = 123;",
13038             format("int a = 5;\n"
13039                    "int one = 1;\n"
13040                    "\n"
13041                    "int oneTwoThree = 123;",
13042                    Alignment));
13043   EXPECT_EQ("int a           = 5;\n"
13044             "int one         = 1;\n"
13045             "\n"
13046             "int oneTwoThree = 123;\n"
13047             "int oneTwo      = 12;",
13048             format("int a = 5;\n"
13049                    "int one = 1;\n"
13050                    "\n"
13051                    "int oneTwoThree = 123;\n"
13052                    "int oneTwo = 12;",
13053                    Alignment));
13054 
13055   /* Test across comments */
13056   EXPECT_EQ("int a = 5;\n"
13057             "/* block comment */\n"
13058             "int oneTwoThree = 123;",
13059             format("int a = 5;\n"
13060                    "/* block comment */\n"
13061                    "int oneTwoThree=123;",
13062                    Alignment));
13063 
13064   EXPECT_EQ("int a = 5;\n"
13065             "// line comment\n"
13066             "int oneTwoThree = 123;",
13067             format("int a = 5;\n"
13068                    "// line comment\n"
13069                    "int oneTwoThree=123;",
13070                    Alignment));
13071 
13072   /* Test across comments and newlines */
13073   EXPECT_EQ("int a = 5;\n"
13074             "\n"
13075             "/* block comment */\n"
13076             "int oneTwoThree = 123;",
13077             format("int a = 5;\n"
13078                    "\n"
13079                    "/* block comment */\n"
13080                    "int oneTwoThree=123;",
13081                    Alignment));
13082 
13083   EXPECT_EQ("int a = 5;\n"
13084             "\n"
13085             "// line comment\n"
13086             "int oneTwoThree = 123;",
13087             format("int a = 5;\n"
13088                    "\n"
13089                    "// line comment\n"
13090                    "int oneTwoThree=123;",
13091                    Alignment));
13092 }
13093 
13094 TEST_F(FormatTest, AlignConsecutiveDeclarationsAcrossEmptyLinesAndComments) {
13095   FormatStyle Alignment = getLLVMStyle();
13096   Alignment.AlignConsecutiveDeclarations =
13097       FormatStyle::ACS_AcrossEmptyLinesAndComments;
13098   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_None;
13099 
13100   Alignment.MaxEmptyLinesToKeep = 10;
13101   /* Test alignment across empty lines */
13102   EXPECT_EQ("int         a = 5;\n"
13103             "\n"
13104             "float const oneTwoThree = 123;",
13105             format("int a = 5;\n"
13106                    "\n"
13107                    "float const oneTwoThree = 123;",
13108                    Alignment));
13109   EXPECT_EQ("int         a = 5;\n"
13110             "float const one = 1;\n"
13111             "\n"
13112             "int         oneTwoThree = 123;",
13113             format("int a = 5;\n"
13114                    "float const one = 1;\n"
13115                    "\n"
13116                    "int oneTwoThree = 123;",
13117                    Alignment));
13118 
13119   /* Test across comments */
13120   EXPECT_EQ("float const a = 5;\n"
13121             "/* block comment */\n"
13122             "int         oneTwoThree = 123;",
13123             format("float const a = 5;\n"
13124                    "/* block comment */\n"
13125                    "int oneTwoThree=123;",
13126                    Alignment));
13127 
13128   EXPECT_EQ("float const a = 5;\n"
13129             "// line comment\n"
13130             "int         oneTwoThree = 123;",
13131             format("float const a = 5;\n"
13132                    "// line comment\n"
13133                    "int oneTwoThree=123;",
13134                    Alignment));
13135 
13136   /* Test across comments and newlines */
13137   EXPECT_EQ("float const a = 5;\n"
13138             "\n"
13139             "/* block comment */\n"
13140             "int         oneTwoThree = 123;",
13141             format("float const a = 5;\n"
13142                    "\n"
13143                    "/* block comment */\n"
13144                    "int         oneTwoThree=123;",
13145                    Alignment));
13146 
13147   EXPECT_EQ("float const a = 5;\n"
13148             "\n"
13149             "// line comment\n"
13150             "int         oneTwoThree = 123;",
13151             format("float const a = 5;\n"
13152                    "\n"
13153                    "// line comment\n"
13154                    "int oneTwoThree=123;",
13155                    Alignment));
13156 }
13157 
13158 TEST_F(FormatTest, AlignConsecutiveBitFieldsAcrossEmptyLinesAndComments) {
13159   FormatStyle Alignment = getLLVMStyle();
13160   Alignment.AlignConsecutiveBitFields =
13161       FormatStyle::ACS_AcrossEmptyLinesAndComments;
13162 
13163   Alignment.MaxEmptyLinesToKeep = 10;
13164   /* Test alignment across empty lines */
13165   EXPECT_EQ("int a            : 5;\n"
13166             "\n"
13167             "int longbitfield : 6;",
13168             format("int a : 5;\n"
13169                    "\n"
13170                    "int longbitfield : 6;",
13171                    Alignment));
13172   EXPECT_EQ("int a            : 5;\n"
13173             "int one          : 1;\n"
13174             "\n"
13175             "int longbitfield : 6;",
13176             format("int a : 5;\n"
13177                    "int one : 1;\n"
13178                    "\n"
13179                    "int longbitfield : 6;",
13180                    Alignment));
13181 
13182   /* Test across comments */
13183   EXPECT_EQ("int a            : 5;\n"
13184             "/* block comment */\n"
13185             "int longbitfield : 6;",
13186             format("int a : 5;\n"
13187                    "/* block comment */\n"
13188                    "int longbitfield : 6;",
13189                    Alignment));
13190   EXPECT_EQ("int a            : 5;\n"
13191             "int one          : 1;\n"
13192             "// line comment\n"
13193             "int longbitfield : 6;",
13194             format("int a : 5;\n"
13195                    "int one : 1;\n"
13196                    "// line comment\n"
13197                    "int longbitfield : 6;",
13198                    Alignment));
13199 
13200   /* Test across comments and newlines */
13201   EXPECT_EQ("int a            : 5;\n"
13202             "/* block comment */\n"
13203             "\n"
13204             "int longbitfield : 6;",
13205             format("int a : 5;\n"
13206                    "/* block comment */\n"
13207                    "\n"
13208                    "int longbitfield : 6;",
13209                    Alignment));
13210   EXPECT_EQ("int a            : 5;\n"
13211             "int one          : 1;\n"
13212             "\n"
13213             "// line comment\n"
13214             "\n"
13215             "int longbitfield : 6;",
13216             format("int a : 5;\n"
13217                    "int one : 1;\n"
13218                    "\n"
13219                    "// line comment \n"
13220                    "\n"
13221                    "int longbitfield : 6;",
13222                    Alignment));
13223 }
13224 
13225 TEST_F(FormatTest, AlignConsecutiveAssignmentsAcrossComments) {
13226   FormatStyle Alignment = getLLVMStyle();
13227   Alignment.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
13228   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_AcrossComments;
13229 
13230   Alignment.MaxEmptyLinesToKeep = 10;
13231   /* Test alignment across empty lines */
13232   EXPECT_EQ("int a = 5;\n"
13233             "\n"
13234             "int oneTwoThree = 123;",
13235             format("int a       = 5;\n"
13236                    "\n"
13237                    "int oneTwoThree= 123;",
13238                    Alignment));
13239   EXPECT_EQ("int a   = 5;\n"
13240             "int one = 1;\n"
13241             "\n"
13242             "int oneTwoThree = 123;",
13243             format("int a = 5;\n"
13244                    "int one = 1;\n"
13245                    "\n"
13246                    "int oneTwoThree = 123;",
13247                    Alignment));
13248 
13249   /* Test across comments */
13250   EXPECT_EQ("int a           = 5;\n"
13251             "/* block comment */\n"
13252             "int oneTwoThree = 123;",
13253             format("int a = 5;\n"
13254                    "/* block comment */\n"
13255                    "int oneTwoThree=123;",
13256                    Alignment));
13257 
13258   EXPECT_EQ("int a           = 5;\n"
13259             "// line comment\n"
13260             "int oneTwoThree = 123;",
13261             format("int a = 5;\n"
13262                    "// line comment\n"
13263                    "int oneTwoThree=123;",
13264                    Alignment));
13265 
13266   EXPECT_EQ("int a           = 5;\n"
13267             "/*\n"
13268             " * multi-line block comment\n"
13269             " */\n"
13270             "int oneTwoThree = 123;",
13271             format("int a = 5;\n"
13272                    "/*\n"
13273                    " * multi-line block comment\n"
13274                    " */\n"
13275                    "int oneTwoThree=123;",
13276                    Alignment));
13277 
13278   EXPECT_EQ("int a           = 5;\n"
13279             "//\n"
13280             "// multi-line line comment\n"
13281             "//\n"
13282             "int oneTwoThree = 123;",
13283             format("int a = 5;\n"
13284                    "//\n"
13285                    "// multi-line line comment\n"
13286                    "//\n"
13287                    "int oneTwoThree=123;",
13288                    Alignment));
13289 
13290   /* Test across comments and newlines */
13291   EXPECT_EQ("int a = 5;\n"
13292             "\n"
13293             "/* block comment */\n"
13294             "int oneTwoThree = 123;",
13295             format("int a = 5;\n"
13296                    "\n"
13297                    "/* block comment */\n"
13298                    "int oneTwoThree=123;",
13299                    Alignment));
13300 
13301   EXPECT_EQ("int a = 5;\n"
13302             "\n"
13303             "// line comment\n"
13304             "int oneTwoThree = 123;",
13305             format("int a = 5;\n"
13306                    "\n"
13307                    "// line comment\n"
13308                    "int oneTwoThree=123;",
13309                    Alignment));
13310 }
13311 
13312 TEST_F(FormatTest, AlignConsecutiveAssignmentsAcrossEmptyLinesAndComments) {
13313   FormatStyle Alignment = getLLVMStyle();
13314   Alignment.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
13315   Alignment.AlignConsecutiveAssignments =
13316       FormatStyle::ACS_AcrossEmptyLinesAndComments;
13317   verifyFormat("int a           = 5;\n"
13318                "int oneTwoThree = 123;",
13319                Alignment);
13320   verifyFormat("int a           = method();\n"
13321                "int oneTwoThree = 133;",
13322                Alignment);
13323   verifyFormat("a &= 5;\n"
13324                "bcd *= 5;\n"
13325                "ghtyf += 5;\n"
13326                "dvfvdb -= 5;\n"
13327                "a /= 5;\n"
13328                "vdsvsv %= 5;\n"
13329                "sfdbddfbdfbb ^= 5;\n"
13330                "dvsdsv |= 5;\n"
13331                "int dsvvdvsdvvv = 123;",
13332                Alignment);
13333   verifyFormat("int i = 1, j = 10;\n"
13334                "something = 2000;",
13335                Alignment);
13336   verifyFormat("something = 2000;\n"
13337                "int i = 1, j = 10;\n",
13338                Alignment);
13339   verifyFormat("something = 2000;\n"
13340                "another   = 911;\n"
13341                "int i = 1, j = 10;\n"
13342                "oneMore = 1;\n"
13343                "i       = 2;",
13344                Alignment);
13345   verifyFormat("int a   = 5;\n"
13346                "int one = 1;\n"
13347                "method();\n"
13348                "int oneTwoThree = 123;\n"
13349                "int oneTwo      = 12;",
13350                Alignment);
13351   verifyFormat("int oneTwoThree = 123;\n"
13352                "int oneTwo      = 12;\n"
13353                "method();\n",
13354                Alignment);
13355   verifyFormat("int oneTwoThree = 123; // comment\n"
13356                "int oneTwo      = 12;  // comment",
13357                Alignment);
13358 
13359   // Bug 25167
13360   /* Uncomment when fixed
13361     verifyFormat("#if A\n"
13362                  "#else\n"
13363                  "int aaaaaaaa = 12;\n"
13364                  "#endif\n"
13365                  "#if B\n"
13366                  "#else\n"
13367                  "int a = 12;\n"
13368                  "#endif\n",
13369                  Alignment);
13370     verifyFormat("enum foo {\n"
13371                  "#if A\n"
13372                  "#else\n"
13373                  "  aaaaaaaa = 12;\n"
13374                  "#endif\n"
13375                  "#if B\n"
13376                  "#else\n"
13377                  "  a = 12;\n"
13378                  "#endif\n"
13379                  "};\n",
13380                  Alignment);
13381   */
13382 
13383   Alignment.MaxEmptyLinesToKeep = 10;
13384   /* Test alignment across empty lines */
13385   EXPECT_EQ("int a           = 5;\n"
13386             "\n"
13387             "int oneTwoThree = 123;",
13388             format("int a       = 5;\n"
13389                    "\n"
13390                    "int oneTwoThree= 123;",
13391                    Alignment));
13392   EXPECT_EQ("int a           = 5;\n"
13393             "int one         = 1;\n"
13394             "\n"
13395             "int oneTwoThree = 123;",
13396             format("int a = 5;\n"
13397                    "int one = 1;\n"
13398                    "\n"
13399                    "int oneTwoThree = 123;",
13400                    Alignment));
13401   EXPECT_EQ("int a           = 5;\n"
13402             "int one         = 1;\n"
13403             "\n"
13404             "int oneTwoThree = 123;\n"
13405             "int oneTwo      = 12;",
13406             format("int a = 5;\n"
13407                    "int one = 1;\n"
13408                    "\n"
13409                    "int oneTwoThree = 123;\n"
13410                    "int oneTwo = 12;",
13411                    Alignment));
13412 
13413   /* Test across comments */
13414   EXPECT_EQ("int a           = 5;\n"
13415             "/* block comment */\n"
13416             "int oneTwoThree = 123;",
13417             format("int a = 5;\n"
13418                    "/* block comment */\n"
13419                    "int oneTwoThree=123;",
13420                    Alignment));
13421 
13422   EXPECT_EQ("int a           = 5;\n"
13423             "// line comment\n"
13424             "int oneTwoThree = 123;",
13425             format("int a = 5;\n"
13426                    "// line comment\n"
13427                    "int oneTwoThree=123;",
13428                    Alignment));
13429 
13430   /* Test across comments and newlines */
13431   EXPECT_EQ("int a           = 5;\n"
13432             "\n"
13433             "/* block comment */\n"
13434             "int oneTwoThree = 123;",
13435             format("int a = 5;\n"
13436                    "\n"
13437                    "/* block comment */\n"
13438                    "int oneTwoThree=123;",
13439                    Alignment));
13440 
13441   EXPECT_EQ("int a           = 5;\n"
13442             "\n"
13443             "// line comment\n"
13444             "int oneTwoThree = 123;",
13445             format("int a = 5;\n"
13446                    "\n"
13447                    "// line comment\n"
13448                    "int oneTwoThree=123;",
13449                    Alignment));
13450 
13451   EXPECT_EQ("int a           = 5;\n"
13452             "//\n"
13453             "// multi-line line comment\n"
13454             "//\n"
13455             "int oneTwoThree = 123;",
13456             format("int a = 5;\n"
13457                    "//\n"
13458                    "// multi-line line comment\n"
13459                    "//\n"
13460                    "int oneTwoThree=123;",
13461                    Alignment));
13462 
13463   EXPECT_EQ("int a           = 5;\n"
13464             "/*\n"
13465             " *  multi-line block comment\n"
13466             " */\n"
13467             "int oneTwoThree = 123;",
13468             format("int a = 5;\n"
13469                    "/*\n"
13470                    " *  multi-line block comment\n"
13471                    " */\n"
13472                    "int oneTwoThree=123;",
13473                    Alignment));
13474 
13475   EXPECT_EQ("int a           = 5;\n"
13476             "\n"
13477             "/* block comment */\n"
13478             "\n"
13479             "\n"
13480             "\n"
13481             "int oneTwoThree = 123;",
13482             format("int a = 5;\n"
13483                    "\n"
13484                    "/* block comment */\n"
13485                    "\n"
13486                    "\n"
13487                    "\n"
13488                    "int oneTwoThree=123;",
13489                    Alignment));
13490 
13491   EXPECT_EQ("int a           = 5;\n"
13492             "\n"
13493             "// line comment\n"
13494             "\n"
13495             "\n"
13496             "\n"
13497             "int oneTwoThree = 123;",
13498             format("int a = 5;\n"
13499                    "\n"
13500                    "// line comment\n"
13501                    "\n"
13502                    "\n"
13503                    "\n"
13504                    "int oneTwoThree=123;",
13505                    Alignment));
13506 
13507   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
13508   verifyFormat("#define A \\\n"
13509                "  int aaaa       = 12; \\\n"
13510                "  int b          = 23; \\\n"
13511                "  int ccc        = 234; \\\n"
13512                "  int dddddddddd = 2345;",
13513                Alignment);
13514   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
13515   verifyFormat("#define A               \\\n"
13516                "  int aaaa       = 12;  \\\n"
13517                "  int b          = 23;  \\\n"
13518                "  int ccc        = 234; \\\n"
13519                "  int dddddddddd = 2345;",
13520                Alignment);
13521   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
13522   verifyFormat("#define A                                                      "
13523                "                \\\n"
13524                "  int aaaa       = 12;                                         "
13525                "                \\\n"
13526                "  int b          = 23;                                         "
13527                "                \\\n"
13528                "  int ccc        = 234;                                        "
13529                "                \\\n"
13530                "  int dddddddddd = 2345;",
13531                Alignment);
13532   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
13533                "k = 4, int l = 5,\n"
13534                "                  int m = 6) {\n"
13535                "  int j      = 10;\n"
13536                "  otherThing = 1;\n"
13537                "}",
13538                Alignment);
13539   verifyFormat("void SomeFunction(int parameter = 0) {\n"
13540                "  int i   = 1;\n"
13541                "  int j   = 2;\n"
13542                "  int big = 10000;\n"
13543                "}",
13544                Alignment);
13545   verifyFormat("class C {\n"
13546                "public:\n"
13547                "  int i            = 1;\n"
13548                "  virtual void f() = 0;\n"
13549                "};",
13550                Alignment);
13551   verifyFormat("int i = 1;\n"
13552                "if (SomeType t = getSomething()) {\n"
13553                "}\n"
13554                "int j   = 2;\n"
13555                "int big = 10000;",
13556                Alignment);
13557   verifyFormat("int j = 7;\n"
13558                "for (int k = 0; k < N; ++k) {\n"
13559                "}\n"
13560                "int j   = 2;\n"
13561                "int big = 10000;\n"
13562                "}",
13563                Alignment);
13564   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
13565   verifyFormat("int i = 1;\n"
13566                "LooooooooooongType loooooooooooooooooooooongVariable\n"
13567                "    = someLooooooooooooooooongFunction();\n"
13568                "int j = 2;",
13569                Alignment);
13570   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
13571   verifyFormat("int i = 1;\n"
13572                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
13573                "    someLooooooooooooooooongFunction();\n"
13574                "int j = 2;",
13575                Alignment);
13576 
13577   verifyFormat("auto lambda = []() {\n"
13578                "  auto i = 0;\n"
13579                "  return 0;\n"
13580                "};\n"
13581                "int i  = 0;\n"
13582                "auto v = type{\n"
13583                "    i = 1,   //\n"
13584                "    (i = 2), //\n"
13585                "    i = 3    //\n"
13586                "};",
13587                Alignment);
13588 
13589   verifyFormat(
13590       "int i      = 1;\n"
13591       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
13592       "                          loooooooooooooooooooooongParameterB);\n"
13593       "int j      = 2;",
13594       Alignment);
13595 
13596   verifyFormat("template <typename T, typename T_0 = very_long_type_name_0,\n"
13597                "          typename B   = very_long_type_name_1,\n"
13598                "          typename T_2 = very_long_type_name_2>\n"
13599                "auto foo() {}\n",
13600                Alignment);
13601   verifyFormat("int a, b = 1;\n"
13602                "int c  = 2;\n"
13603                "int dd = 3;\n",
13604                Alignment);
13605   verifyFormat("int aa       = ((1 > 2) ? 3 : 4);\n"
13606                "float b[1][] = {{3.f}};\n",
13607                Alignment);
13608   verifyFormat("for (int i = 0; i < 1; i++)\n"
13609                "  int x = 1;\n",
13610                Alignment);
13611   verifyFormat("for (i = 0; i < 1; i++)\n"
13612                "  x = 1;\n"
13613                "y = 1;\n",
13614                Alignment);
13615 
13616   Alignment.ReflowComments = true;
13617   Alignment.ColumnLimit = 50;
13618   EXPECT_EQ("int x   = 0;\n"
13619             "int yy  = 1; /// specificlennospace\n"
13620             "int zzz = 2;\n",
13621             format("int x   = 0;\n"
13622                    "int yy  = 1; ///specificlennospace\n"
13623                    "int zzz = 2;\n",
13624                    Alignment));
13625 }
13626 
13627 TEST_F(FormatTest, AlignConsecutiveAssignments) {
13628   FormatStyle Alignment = getLLVMStyle();
13629   Alignment.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
13630   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_None;
13631   verifyFormat("int a = 5;\n"
13632                "int oneTwoThree = 123;",
13633                Alignment);
13634   verifyFormat("int a = 5;\n"
13635                "int oneTwoThree = 123;",
13636                Alignment);
13637 
13638   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
13639   verifyFormat("int a           = 5;\n"
13640                "int oneTwoThree = 123;",
13641                Alignment);
13642   verifyFormat("int a           = method();\n"
13643                "int oneTwoThree = 133;",
13644                Alignment);
13645   verifyFormat("a &= 5;\n"
13646                "bcd *= 5;\n"
13647                "ghtyf += 5;\n"
13648                "dvfvdb -= 5;\n"
13649                "a /= 5;\n"
13650                "vdsvsv %= 5;\n"
13651                "sfdbddfbdfbb ^= 5;\n"
13652                "dvsdsv |= 5;\n"
13653                "int dsvvdvsdvvv = 123;",
13654                Alignment);
13655   verifyFormat("int i = 1, j = 10;\n"
13656                "something = 2000;",
13657                Alignment);
13658   verifyFormat("something = 2000;\n"
13659                "int i = 1, j = 10;\n",
13660                Alignment);
13661   verifyFormat("something = 2000;\n"
13662                "another   = 911;\n"
13663                "int i = 1, j = 10;\n"
13664                "oneMore = 1;\n"
13665                "i       = 2;",
13666                Alignment);
13667   verifyFormat("int a   = 5;\n"
13668                "int one = 1;\n"
13669                "method();\n"
13670                "int oneTwoThree = 123;\n"
13671                "int oneTwo      = 12;",
13672                Alignment);
13673   verifyFormat("int oneTwoThree = 123;\n"
13674                "int oneTwo      = 12;\n"
13675                "method();\n",
13676                Alignment);
13677   verifyFormat("int oneTwoThree = 123; // comment\n"
13678                "int oneTwo      = 12;  // comment",
13679                Alignment);
13680 
13681   // Bug 25167
13682   /* Uncomment when fixed
13683     verifyFormat("#if A\n"
13684                  "#else\n"
13685                  "int aaaaaaaa = 12;\n"
13686                  "#endif\n"
13687                  "#if B\n"
13688                  "#else\n"
13689                  "int a = 12;\n"
13690                  "#endif\n",
13691                  Alignment);
13692     verifyFormat("enum foo {\n"
13693                  "#if A\n"
13694                  "#else\n"
13695                  "  aaaaaaaa = 12;\n"
13696                  "#endif\n"
13697                  "#if B\n"
13698                  "#else\n"
13699                  "  a = 12;\n"
13700                  "#endif\n"
13701                  "};\n",
13702                  Alignment);
13703   */
13704 
13705   EXPECT_EQ("int a = 5;\n"
13706             "\n"
13707             "int oneTwoThree = 123;",
13708             format("int a       = 5;\n"
13709                    "\n"
13710                    "int oneTwoThree= 123;",
13711                    Alignment));
13712   EXPECT_EQ("int a   = 5;\n"
13713             "int one = 1;\n"
13714             "\n"
13715             "int oneTwoThree = 123;",
13716             format("int a = 5;\n"
13717                    "int one = 1;\n"
13718                    "\n"
13719                    "int oneTwoThree = 123;",
13720                    Alignment));
13721   EXPECT_EQ("int a   = 5;\n"
13722             "int one = 1;\n"
13723             "\n"
13724             "int oneTwoThree = 123;\n"
13725             "int oneTwo      = 12;",
13726             format("int a = 5;\n"
13727                    "int one = 1;\n"
13728                    "\n"
13729                    "int oneTwoThree = 123;\n"
13730                    "int oneTwo = 12;",
13731                    Alignment));
13732   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
13733   verifyFormat("#define A \\\n"
13734                "  int aaaa       = 12; \\\n"
13735                "  int b          = 23; \\\n"
13736                "  int ccc        = 234; \\\n"
13737                "  int dddddddddd = 2345;",
13738                Alignment);
13739   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
13740   verifyFormat("#define A               \\\n"
13741                "  int aaaa       = 12;  \\\n"
13742                "  int b          = 23;  \\\n"
13743                "  int ccc        = 234; \\\n"
13744                "  int dddddddddd = 2345;",
13745                Alignment);
13746   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
13747   verifyFormat("#define A                                                      "
13748                "                \\\n"
13749                "  int aaaa       = 12;                                         "
13750                "                \\\n"
13751                "  int b          = 23;                                         "
13752                "                \\\n"
13753                "  int ccc        = 234;                                        "
13754                "                \\\n"
13755                "  int dddddddddd = 2345;",
13756                Alignment);
13757   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
13758                "k = 4, int l = 5,\n"
13759                "                  int m = 6) {\n"
13760                "  int j      = 10;\n"
13761                "  otherThing = 1;\n"
13762                "}",
13763                Alignment);
13764   verifyFormat("void SomeFunction(int parameter = 0) {\n"
13765                "  int i   = 1;\n"
13766                "  int j   = 2;\n"
13767                "  int big = 10000;\n"
13768                "}",
13769                Alignment);
13770   verifyFormat("class C {\n"
13771                "public:\n"
13772                "  int i            = 1;\n"
13773                "  virtual void f() = 0;\n"
13774                "};",
13775                Alignment);
13776   verifyFormat("int i = 1;\n"
13777                "if (SomeType t = getSomething()) {\n"
13778                "}\n"
13779                "int j   = 2;\n"
13780                "int big = 10000;",
13781                Alignment);
13782   verifyFormat("int j = 7;\n"
13783                "for (int k = 0; k < N; ++k) {\n"
13784                "}\n"
13785                "int j   = 2;\n"
13786                "int big = 10000;\n"
13787                "}",
13788                Alignment);
13789   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
13790   verifyFormat("int i = 1;\n"
13791                "LooooooooooongType loooooooooooooooooooooongVariable\n"
13792                "    = someLooooooooooooooooongFunction();\n"
13793                "int j = 2;",
13794                Alignment);
13795   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
13796   verifyFormat("int i = 1;\n"
13797                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
13798                "    someLooooooooooooooooongFunction();\n"
13799                "int j = 2;",
13800                Alignment);
13801 
13802   verifyFormat("auto lambda = []() {\n"
13803                "  auto i = 0;\n"
13804                "  return 0;\n"
13805                "};\n"
13806                "int i  = 0;\n"
13807                "auto v = type{\n"
13808                "    i = 1,   //\n"
13809                "    (i = 2), //\n"
13810                "    i = 3    //\n"
13811                "};",
13812                Alignment);
13813 
13814   verifyFormat(
13815       "int i      = 1;\n"
13816       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
13817       "                          loooooooooooooooooooooongParameterB);\n"
13818       "int j      = 2;",
13819       Alignment);
13820 
13821   verifyFormat("template <typename T, typename T_0 = very_long_type_name_0,\n"
13822                "          typename B   = very_long_type_name_1,\n"
13823                "          typename T_2 = very_long_type_name_2>\n"
13824                "auto foo() {}\n",
13825                Alignment);
13826   verifyFormat("int a, b = 1;\n"
13827                "int c  = 2;\n"
13828                "int dd = 3;\n",
13829                Alignment);
13830   verifyFormat("int aa       = ((1 > 2) ? 3 : 4);\n"
13831                "float b[1][] = {{3.f}};\n",
13832                Alignment);
13833   verifyFormat("for (int i = 0; i < 1; i++)\n"
13834                "  int x = 1;\n",
13835                Alignment);
13836   verifyFormat("for (i = 0; i < 1; i++)\n"
13837                "  x = 1;\n"
13838                "y = 1;\n",
13839                Alignment);
13840 
13841   Alignment.ReflowComments = true;
13842   Alignment.ColumnLimit = 50;
13843   EXPECT_EQ("int x   = 0;\n"
13844             "int yy  = 1; /// specificlennospace\n"
13845             "int zzz = 2;\n",
13846             format("int x   = 0;\n"
13847                    "int yy  = 1; ///specificlennospace\n"
13848                    "int zzz = 2;\n",
13849                    Alignment));
13850 }
13851 
13852 TEST_F(FormatTest, AlignConsecutiveBitFields) {
13853   FormatStyle Alignment = getLLVMStyle();
13854   Alignment.AlignConsecutiveBitFields = FormatStyle::ACS_Consecutive;
13855   verifyFormat("int const a     : 5;\n"
13856                "int oneTwoThree : 23;",
13857                Alignment);
13858 
13859   // Initializers are allowed starting with c++2a
13860   verifyFormat("int const a     : 5 = 1;\n"
13861                "int oneTwoThree : 23 = 0;",
13862                Alignment);
13863 
13864   Alignment.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
13865   verifyFormat("int const a           : 5;\n"
13866                "int       oneTwoThree : 23;",
13867                Alignment);
13868 
13869   verifyFormat("int const a           : 5;  // comment\n"
13870                "int       oneTwoThree : 23; // comment",
13871                Alignment);
13872 
13873   verifyFormat("int const a           : 5 = 1;\n"
13874                "int       oneTwoThree : 23 = 0;",
13875                Alignment);
13876 
13877   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
13878   verifyFormat("int const a           : 5  = 1;\n"
13879                "int       oneTwoThree : 23 = 0;",
13880                Alignment);
13881   verifyFormat("int const a           : 5  = {1};\n"
13882                "int       oneTwoThree : 23 = 0;",
13883                Alignment);
13884 
13885   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_None;
13886   verifyFormat("int const a          :5;\n"
13887                "int       oneTwoThree:23;",
13888                Alignment);
13889 
13890   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_Before;
13891   verifyFormat("int const a           :5;\n"
13892                "int       oneTwoThree :23;",
13893                Alignment);
13894 
13895   Alignment.BitFieldColonSpacing = FormatStyle::BFCS_After;
13896   verifyFormat("int const a          : 5;\n"
13897                "int       oneTwoThree: 23;",
13898                Alignment);
13899 
13900   // Known limitations: ':' is only recognized as a bitfield colon when
13901   // followed by a number.
13902   /*
13903   verifyFormat("int oneTwoThree : SOME_CONSTANT;\n"
13904                "int a           : 5;",
13905                Alignment);
13906   */
13907 }
13908 
13909 TEST_F(FormatTest, AlignConsecutiveDeclarations) {
13910   FormatStyle Alignment = getLLVMStyle();
13911   Alignment.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
13912   Alignment.AlignConsecutiveDeclarations = FormatStyle::ACS_None;
13913   verifyFormat("float const a = 5;\n"
13914                "int oneTwoThree = 123;",
13915                Alignment);
13916   verifyFormat("int a = 5;\n"
13917                "float const oneTwoThree = 123;",
13918                Alignment);
13919 
13920   Alignment.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
13921   verifyFormat("float const a = 5;\n"
13922                "int         oneTwoThree = 123;",
13923                Alignment);
13924   verifyFormat("int         a = method();\n"
13925                "float const oneTwoThree = 133;",
13926                Alignment);
13927   verifyFormat("int i = 1, j = 10;\n"
13928                "something = 2000;",
13929                Alignment);
13930   verifyFormat("something = 2000;\n"
13931                "int i = 1, j = 10;\n",
13932                Alignment);
13933   verifyFormat("float      something = 2000;\n"
13934                "double     another = 911;\n"
13935                "int        i = 1, j = 10;\n"
13936                "const int *oneMore = 1;\n"
13937                "unsigned   i = 2;",
13938                Alignment);
13939   verifyFormat("float a = 5;\n"
13940                "int   one = 1;\n"
13941                "method();\n"
13942                "const double       oneTwoThree = 123;\n"
13943                "const unsigned int oneTwo = 12;",
13944                Alignment);
13945   verifyFormat("int      oneTwoThree{0}; // comment\n"
13946                "unsigned oneTwo;         // comment",
13947                Alignment);
13948   verifyFormat("unsigned int *      a;\n"
13949                "int *               b;\n"
13950                "unsigned int Const *c;\n"
13951                "unsigned int const *d;\n"
13952                "unsigned int Const &e;\n"
13953                "unsigned int const &f;",
13954                Alignment);
13955   verifyFormat("Const unsigned int *c;\n"
13956                "const unsigned int *d;\n"
13957                "Const unsigned int &e;\n"
13958                "const unsigned int &f;\n"
13959                "const unsigned      g;\n"
13960                "Const unsigned      h;",
13961                Alignment);
13962   EXPECT_EQ("float const a = 5;\n"
13963             "\n"
13964             "int oneTwoThree = 123;",
13965             format("float const   a = 5;\n"
13966                    "\n"
13967                    "int           oneTwoThree= 123;",
13968                    Alignment));
13969   EXPECT_EQ("float a = 5;\n"
13970             "int   one = 1;\n"
13971             "\n"
13972             "unsigned oneTwoThree = 123;",
13973             format("float    a = 5;\n"
13974                    "int      one = 1;\n"
13975                    "\n"
13976                    "unsigned oneTwoThree = 123;",
13977                    Alignment));
13978   EXPECT_EQ("float a = 5;\n"
13979             "int   one = 1;\n"
13980             "\n"
13981             "unsigned oneTwoThree = 123;\n"
13982             "int      oneTwo = 12;",
13983             format("float    a = 5;\n"
13984                    "int one = 1;\n"
13985                    "\n"
13986                    "unsigned oneTwoThree = 123;\n"
13987                    "int oneTwo = 12;",
13988                    Alignment));
13989   // Function prototype alignment
13990   verifyFormat("int    a();\n"
13991                "double b();",
13992                Alignment);
13993   verifyFormat("int    a(int x);\n"
13994                "double b();",
13995                Alignment);
13996   unsigned OldColumnLimit = Alignment.ColumnLimit;
13997   // We need to set ColumnLimit to zero, in order to stress nested alignments,
13998   // otherwise the function parameters will be re-flowed onto a single line.
13999   Alignment.ColumnLimit = 0;
14000   EXPECT_EQ("int    a(int   x,\n"
14001             "         float y);\n"
14002             "double b(int    x,\n"
14003             "         double y);",
14004             format("int a(int x,\n"
14005                    " float y);\n"
14006                    "double b(int x,\n"
14007                    " double y);",
14008                    Alignment));
14009   // This ensures that function parameters of function declarations are
14010   // correctly indented when their owning functions are indented.
14011   // The failure case here is for 'double y' to not be indented enough.
14012   EXPECT_EQ("double a(int x);\n"
14013             "int    b(int    y,\n"
14014             "         double z);",
14015             format("double a(int x);\n"
14016                    "int b(int y,\n"
14017                    " double z);",
14018                    Alignment));
14019   // Set ColumnLimit low so that we induce wrapping immediately after
14020   // the function name and opening paren.
14021   Alignment.ColumnLimit = 13;
14022   verifyFormat("int function(\n"
14023                "    int  x,\n"
14024                "    bool y);",
14025                Alignment);
14026   Alignment.ColumnLimit = OldColumnLimit;
14027   // Ensure function pointers don't screw up recursive alignment
14028   verifyFormat("int    a(int x, void (*fp)(int y));\n"
14029                "double b();",
14030                Alignment);
14031   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
14032   // Ensure recursive alignment is broken by function braces, so that the
14033   // "a = 1" does not align with subsequent assignments inside the function
14034   // body.
14035   verifyFormat("int func(int a = 1) {\n"
14036                "  int b  = 2;\n"
14037                "  int cc = 3;\n"
14038                "}",
14039                Alignment);
14040   verifyFormat("float      something = 2000;\n"
14041                "double     another   = 911;\n"
14042                "int        i = 1, j = 10;\n"
14043                "const int *oneMore = 1;\n"
14044                "unsigned   i       = 2;",
14045                Alignment);
14046   verifyFormat("int      oneTwoThree = {0}; // comment\n"
14047                "unsigned oneTwo      = 0;   // comment",
14048                Alignment);
14049   // Make sure that scope is correctly tracked, in the absence of braces
14050   verifyFormat("for (int i = 0; i < n; i++)\n"
14051                "  j = i;\n"
14052                "double x = 1;\n",
14053                Alignment);
14054   verifyFormat("if (int i = 0)\n"
14055                "  j = i;\n"
14056                "double x = 1;\n",
14057                Alignment);
14058   // Ensure operator[] and operator() are comprehended
14059   verifyFormat("struct test {\n"
14060                "  long long int foo();\n"
14061                "  int           operator[](int a);\n"
14062                "  double        bar();\n"
14063                "};\n",
14064                Alignment);
14065   verifyFormat("struct test {\n"
14066                "  long long int foo();\n"
14067                "  int           operator()(int a);\n"
14068                "  double        bar();\n"
14069                "};\n",
14070                Alignment);
14071   EXPECT_EQ("void SomeFunction(int parameter = 0) {\n"
14072             "  int const i   = 1;\n"
14073             "  int *     j   = 2;\n"
14074             "  int       big = 10000;\n"
14075             "\n"
14076             "  unsigned oneTwoThree = 123;\n"
14077             "  int      oneTwo      = 12;\n"
14078             "  method();\n"
14079             "  float k  = 2;\n"
14080             "  int   ll = 10000;\n"
14081             "}",
14082             format("void SomeFunction(int parameter= 0) {\n"
14083                    " int const  i= 1;\n"
14084                    "  int *j=2;\n"
14085                    " int big  =  10000;\n"
14086                    "\n"
14087                    "unsigned oneTwoThree  =123;\n"
14088                    "int oneTwo = 12;\n"
14089                    "  method();\n"
14090                    "float k= 2;\n"
14091                    "int ll=10000;\n"
14092                    "}",
14093                    Alignment));
14094   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_None;
14095   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_DontAlign;
14096   verifyFormat("#define A \\\n"
14097                "  int       aaaa = 12; \\\n"
14098                "  float     b = 23; \\\n"
14099                "  const int ccc = 234; \\\n"
14100                "  unsigned  dddddddddd = 2345;",
14101                Alignment);
14102   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Left;
14103   verifyFormat("#define A              \\\n"
14104                "  int       aaaa = 12; \\\n"
14105                "  float     b = 23;    \\\n"
14106                "  const int ccc = 234; \\\n"
14107                "  unsigned  dddddddddd = 2345;",
14108                Alignment);
14109   Alignment.AlignEscapedNewlines = FormatStyle::ENAS_Right;
14110   Alignment.ColumnLimit = 30;
14111   verifyFormat("#define A                    \\\n"
14112                "  int       aaaa = 12;       \\\n"
14113                "  float     b = 23;          \\\n"
14114                "  const int ccc = 234;       \\\n"
14115                "  int       dddddddddd = 2345;",
14116                Alignment);
14117   Alignment.ColumnLimit = 80;
14118   verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int "
14119                "k = 4, int l = 5,\n"
14120                "                  int m = 6) {\n"
14121                "  const int j = 10;\n"
14122                "  otherThing = 1;\n"
14123                "}",
14124                Alignment);
14125   verifyFormat("void SomeFunction(int parameter = 0) {\n"
14126                "  int const i = 1;\n"
14127                "  int *     j = 2;\n"
14128                "  int       big = 10000;\n"
14129                "}",
14130                Alignment);
14131   verifyFormat("class C {\n"
14132                "public:\n"
14133                "  int          i = 1;\n"
14134                "  virtual void f() = 0;\n"
14135                "};",
14136                Alignment);
14137   verifyFormat("float i = 1;\n"
14138                "if (SomeType t = getSomething()) {\n"
14139                "}\n"
14140                "const unsigned j = 2;\n"
14141                "int            big = 10000;",
14142                Alignment);
14143   verifyFormat("float j = 7;\n"
14144                "for (int k = 0; k < N; ++k) {\n"
14145                "}\n"
14146                "unsigned j = 2;\n"
14147                "int      big = 10000;\n"
14148                "}",
14149                Alignment);
14150   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
14151   verifyFormat("float              i = 1;\n"
14152                "LooooooooooongType loooooooooooooooooooooongVariable\n"
14153                "    = someLooooooooooooooooongFunction();\n"
14154                "int j = 2;",
14155                Alignment);
14156   Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None;
14157   verifyFormat("int                i = 1;\n"
14158                "LooooooooooongType loooooooooooooooooooooongVariable =\n"
14159                "    someLooooooooooooooooongFunction();\n"
14160                "int j = 2;",
14161                Alignment);
14162 
14163   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
14164   verifyFormat("auto lambda = []() {\n"
14165                "  auto  ii = 0;\n"
14166                "  float j  = 0;\n"
14167                "  return 0;\n"
14168                "};\n"
14169                "int   i  = 0;\n"
14170                "float i2 = 0;\n"
14171                "auto  v  = type{\n"
14172                "    i = 1,   //\n"
14173                "    (i = 2), //\n"
14174                "    i = 3    //\n"
14175                "};",
14176                Alignment);
14177   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_None;
14178 
14179   verifyFormat(
14180       "int      i = 1;\n"
14181       "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n"
14182       "                          loooooooooooooooooooooongParameterB);\n"
14183       "int      j = 2;",
14184       Alignment);
14185 
14186   // Test interactions with ColumnLimit and AlignConsecutiveAssignments:
14187   // We expect declarations and assignments to align, as long as it doesn't
14188   // exceed the column limit, starting a new alignment sequence whenever it
14189   // happens.
14190   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
14191   Alignment.ColumnLimit = 30;
14192   verifyFormat("float    ii              = 1;\n"
14193                "unsigned j               = 2;\n"
14194                "int someVerylongVariable = 1;\n"
14195                "AnotherLongType  ll = 123456;\n"
14196                "VeryVeryLongType k  = 2;\n"
14197                "int              myvar = 1;",
14198                Alignment);
14199   Alignment.ColumnLimit = 80;
14200   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_None;
14201 
14202   verifyFormat(
14203       "template <typename LongTemplate, typename VeryLongTemplateTypeName,\n"
14204       "          typename LongType, typename B>\n"
14205       "auto foo() {}\n",
14206       Alignment);
14207   verifyFormat("float a, b = 1;\n"
14208                "int   c = 2;\n"
14209                "int   dd = 3;\n",
14210                Alignment);
14211   verifyFormat("int   aa = ((1 > 2) ? 3 : 4);\n"
14212                "float b[1][] = {{3.f}};\n",
14213                Alignment);
14214   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
14215   verifyFormat("float a, b = 1;\n"
14216                "int   c  = 2;\n"
14217                "int   dd = 3;\n",
14218                Alignment);
14219   verifyFormat("int   aa     = ((1 > 2) ? 3 : 4);\n"
14220                "float b[1][] = {{3.f}};\n",
14221                Alignment);
14222   Alignment.AlignConsecutiveAssignments = FormatStyle::ACS_None;
14223 
14224   Alignment.ColumnLimit = 30;
14225   Alignment.BinPackParameters = false;
14226   verifyFormat("void foo(float     a,\n"
14227                "         float     b,\n"
14228                "         int       c,\n"
14229                "         uint32_t *d) {\n"
14230                "  int *  e = 0;\n"
14231                "  float  f = 0;\n"
14232                "  double g = 0;\n"
14233                "}\n"
14234                "void bar(ino_t     a,\n"
14235                "         int       b,\n"
14236                "         uint32_t *c,\n"
14237                "         bool      d) {}\n",
14238                Alignment);
14239   Alignment.BinPackParameters = true;
14240   Alignment.ColumnLimit = 80;
14241 
14242   // Bug 33507
14243   Alignment.PointerAlignment = FormatStyle::PAS_Middle;
14244   verifyFormat(
14245       "auto found = range::find_if(vsProducts, [&](auto * aProduct) {\n"
14246       "  static const Version verVs2017;\n"
14247       "  return true;\n"
14248       "});\n",
14249       Alignment);
14250   Alignment.PointerAlignment = FormatStyle::PAS_Right;
14251 
14252   // See llvm.org/PR35641
14253   Alignment.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
14254   verifyFormat("int func() { //\n"
14255                "  int      b;\n"
14256                "  unsigned c;\n"
14257                "}",
14258                Alignment);
14259 
14260   // See PR37175
14261   FormatStyle Style = getMozillaStyle();
14262   Style.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
14263   EXPECT_EQ("DECOR1 /**/ int8_t /**/ DECOR2 /**/\n"
14264             "foo(int a);",
14265             format("DECOR1 /**/ int8_t /**/ DECOR2 /**/ foo (int a);", Style));
14266 
14267   Alignment.PointerAlignment = FormatStyle::PAS_Left;
14268   verifyFormat("unsigned int*       a;\n"
14269                "int*                b;\n"
14270                "unsigned int Const* c;\n"
14271                "unsigned int const* d;\n"
14272                "unsigned int Const& e;\n"
14273                "unsigned int const& f;",
14274                Alignment);
14275   verifyFormat("Const unsigned int* c;\n"
14276                "const unsigned int* d;\n"
14277                "Const unsigned int& e;\n"
14278                "const unsigned int& f;\n"
14279                "const unsigned      g;\n"
14280                "Const unsigned      h;",
14281                Alignment);
14282 
14283   Alignment.PointerAlignment = FormatStyle::PAS_Middle;
14284   verifyFormat("unsigned int *       a;\n"
14285                "int *                b;\n"
14286                "unsigned int Const * c;\n"
14287                "unsigned int const * d;\n"
14288                "unsigned int Const & e;\n"
14289                "unsigned int const & f;",
14290                Alignment);
14291   verifyFormat("Const unsigned int * c;\n"
14292                "const unsigned int * d;\n"
14293                "Const unsigned int & e;\n"
14294                "const unsigned int & f;\n"
14295                "const unsigned       g;\n"
14296                "Const unsigned       h;",
14297                Alignment);
14298 }
14299 
14300 TEST_F(FormatTest, LinuxBraceBreaking) {
14301   FormatStyle LinuxBraceStyle = getLLVMStyle();
14302   LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux;
14303   verifyFormat("namespace a\n"
14304                "{\n"
14305                "class A\n"
14306                "{\n"
14307                "  void f()\n"
14308                "  {\n"
14309                "    if (true) {\n"
14310                "      a();\n"
14311                "      b();\n"
14312                "    } else {\n"
14313                "      a();\n"
14314                "    }\n"
14315                "  }\n"
14316                "  void g() { return; }\n"
14317                "};\n"
14318                "struct B {\n"
14319                "  int x;\n"
14320                "};\n"
14321                "} // namespace a\n",
14322                LinuxBraceStyle);
14323   verifyFormat("enum X {\n"
14324                "  Y = 0,\n"
14325                "}\n",
14326                LinuxBraceStyle);
14327   verifyFormat("struct S {\n"
14328                "  int Type;\n"
14329                "  union {\n"
14330                "    int x;\n"
14331                "    double y;\n"
14332                "  } Value;\n"
14333                "  class C\n"
14334                "  {\n"
14335                "    MyFavoriteType Value;\n"
14336                "  } Class;\n"
14337                "}\n",
14338                LinuxBraceStyle);
14339 }
14340 
14341 TEST_F(FormatTest, MozillaBraceBreaking) {
14342   FormatStyle MozillaBraceStyle = getLLVMStyle();
14343   MozillaBraceStyle.BreakBeforeBraces = FormatStyle::BS_Mozilla;
14344   MozillaBraceStyle.FixNamespaceComments = false;
14345   verifyFormat("namespace a {\n"
14346                "class A\n"
14347                "{\n"
14348                "  void f()\n"
14349                "  {\n"
14350                "    if (true) {\n"
14351                "      a();\n"
14352                "      b();\n"
14353                "    }\n"
14354                "  }\n"
14355                "  void g() { return; }\n"
14356                "};\n"
14357                "enum E\n"
14358                "{\n"
14359                "  A,\n"
14360                "  // foo\n"
14361                "  B,\n"
14362                "  C\n"
14363                "};\n"
14364                "struct B\n"
14365                "{\n"
14366                "  int x;\n"
14367                "};\n"
14368                "}\n",
14369                MozillaBraceStyle);
14370   verifyFormat("struct S\n"
14371                "{\n"
14372                "  int Type;\n"
14373                "  union\n"
14374                "  {\n"
14375                "    int x;\n"
14376                "    double y;\n"
14377                "  } Value;\n"
14378                "  class C\n"
14379                "  {\n"
14380                "    MyFavoriteType Value;\n"
14381                "  } Class;\n"
14382                "}\n",
14383                MozillaBraceStyle);
14384 }
14385 
14386 TEST_F(FormatTest, StroustrupBraceBreaking) {
14387   FormatStyle StroustrupBraceStyle = getLLVMStyle();
14388   StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
14389   verifyFormat("namespace a {\n"
14390                "class A {\n"
14391                "  void f()\n"
14392                "  {\n"
14393                "    if (true) {\n"
14394                "      a();\n"
14395                "      b();\n"
14396                "    }\n"
14397                "  }\n"
14398                "  void g() { return; }\n"
14399                "};\n"
14400                "struct B {\n"
14401                "  int x;\n"
14402                "};\n"
14403                "} // namespace a\n",
14404                StroustrupBraceStyle);
14405 
14406   verifyFormat("void foo()\n"
14407                "{\n"
14408                "  if (a) {\n"
14409                "    a();\n"
14410                "  }\n"
14411                "  else {\n"
14412                "    b();\n"
14413                "  }\n"
14414                "}\n",
14415                StroustrupBraceStyle);
14416 
14417   verifyFormat("#ifdef _DEBUG\n"
14418                "int foo(int i = 0)\n"
14419                "#else\n"
14420                "int foo(int i = 5)\n"
14421                "#endif\n"
14422                "{\n"
14423                "  return i;\n"
14424                "}",
14425                StroustrupBraceStyle);
14426 
14427   verifyFormat("void foo() {}\n"
14428                "void bar()\n"
14429                "#ifdef _DEBUG\n"
14430                "{\n"
14431                "  foo();\n"
14432                "}\n"
14433                "#else\n"
14434                "{\n"
14435                "}\n"
14436                "#endif",
14437                StroustrupBraceStyle);
14438 
14439   verifyFormat("void foobar() { int i = 5; }\n"
14440                "#ifdef _DEBUG\n"
14441                "void bar() {}\n"
14442                "#else\n"
14443                "void bar() { foobar(); }\n"
14444                "#endif",
14445                StroustrupBraceStyle);
14446 }
14447 
14448 TEST_F(FormatTest, AllmanBraceBreaking) {
14449   FormatStyle AllmanBraceStyle = getLLVMStyle();
14450   AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman;
14451 
14452   EXPECT_EQ("namespace a\n"
14453             "{\n"
14454             "void f();\n"
14455             "void g();\n"
14456             "} // namespace a\n",
14457             format("namespace a\n"
14458                    "{\n"
14459                    "void f();\n"
14460                    "void g();\n"
14461                    "}\n",
14462                    AllmanBraceStyle));
14463 
14464   verifyFormat("namespace a\n"
14465                "{\n"
14466                "class A\n"
14467                "{\n"
14468                "  void f()\n"
14469                "  {\n"
14470                "    if (true)\n"
14471                "    {\n"
14472                "      a();\n"
14473                "      b();\n"
14474                "    }\n"
14475                "  }\n"
14476                "  void g() { return; }\n"
14477                "};\n"
14478                "struct B\n"
14479                "{\n"
14480                "  int x;\n"
14481                "};\n"
14482                "union C\n"
14483                "{\n"
14484                "};\n"
14485                "} // namespace a",
14486                AllmanBraceStyle);
14487 
14488   verifyFormat("void f()\n"
14489                "{\n"
14490                "  if (true)\n"
14491                "  {\n"
14492                "    a();\n"
14493                "  }\n"
14494                "  else if (false)\n"
14495                "  {\n"
14496                "    b();\n"
14497                "  }\n"
14498                "  else\n"
14499                "  {\n"
14500                "    c();\n"
14501                "  }\n"
14502                "}\n",
14503                AllmanBraceStyle);
14504 
14505   verifyFormat("void f()\n"
14506                "{\n"
14507                "  for (int i = 0; i < 10; ++i)\n"
14508                "  {\n"
14509                "    a();\n"
14510                "  }\n"
14511                "  while (false)\n"
14512                "  {\n"
14513                "    b();\n"
14514                "  }\n"
14515                "  do\n"
14516                "  {\n"
14517                "    c();\n"
14518                "  } while (false)\n"
14519                "}\n",
14520                AllmanBraceStyle);
14521 
14522   verifyFormat("void f(int a)\n"
14523                "{\n"
14524                "  switch (a)\n"
14525                "  {\n"
14526                "  case 0:\n"
14527                "    break;\n"
14528                "  case 1:\n"
14529                "  {\n"
14530                "    break;\n"
14531                "  }\n"
14532                "  case 2:\n"
14533                "  {\n"
14534                "  }\n"
14535                "  break;\n"
14536                "  default:\n"
14537                "    break;\n"
14538                "  }\n"
14539                "}\n",
14540                AllmanBraceStyle);
14541 
14542   verifyFormat("enum X\n"
14543                "{\n"
14544                "  Y = 0,\n"
14545                "}\n",
14546                AllmanBraceStyle);
14547   verifyFormat("enum X\n"
14548                "{\n"
14549                "  Y = 0\n"
14550                "}\n",
14551                AllmanBraceStyle);
14552 
14553   verifyFormat("@interface BSApplicationController ()\n"
14554                "{\n"
14555                "@private\n"
14556                "  id _extraIvar;\n"
14557                "}\n"
14558                "@end\n",
14559                AllmanBraceStyle);
14560 
14561   verifyFormat("#ifdef _DEBUG\n"
14562                "int foo(int i = 0)\n"
14563                "#else\n"
14564                "int foo(int i = 5)\n"
14565                "#endif\n"
14566                "{\n"
14567                "  return i;\n"
14568                "}",
14569                AllmanBraceStyle);
14570 
14571   verifyFormat("void foo() {}\n"
14572                "void bar()\n"
14573                "#ifdef _DEBUG\n"
14574                "{\n"
14575                "  foo();\n"
14576                "}\n"
14577                "#else\n"
14578                "{\n"
14579                "}\n"
14580                "#endif",
14581                AllmanBraceStyle);
14582 
14583   verifyFormat("void foobar() { int i = 5; }\n"
14584                "#ifdef _DEBUG\n"
14585                "void bar() {}\n"
14586                "#else\n"
14587                "void bar() { foobar(); }\n"
14588                "#endif",
14589                AllmanBraceStyle);
14590 
14591   EXPECT_EQ(AllmanBraceStyle.AllowShortLambdasOnASingleLine,
14592             FormatStyle::SLS_All);
14593 
14594   verifyFormat("[](int i) { return i + 2; };\n"
14595                "[](int i, int j)\n"
14596                "{\n"
14597                "  auto x = i + j;\n"
14598                "  auto y = i * j;\n"
14599                "  return x ^ y;\n"
14600                "};\n"
14601                "void foo()\n"
14602                "{\n"
14603                "  auto shortLambda = [](int i) { return i + 2; };\n"
14604                "  auto longLambda = [](int i, int j)\n"
14605                "  {\n"
14606                "    auto x = i + j;\n"
14607                "    auto y = i * j;\n"
14608                "    return x ^ y;\n"
14609                "  };\n"
14610                "}",
14611                AllmanBraceStyle);
14612 
14613   AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
14614 
14615   verifyFormat("[](int i)\n"
14616                "{\n"
14617                "  return i + 2;\n"
14618                "};\n"
14619                "[](int i, int j)\n"
14620                "{\n"
14621                "  auto x = i + j;\n"
14622                "  auto y = i * j;\n"
14623                "  return x ^ y;\n"
14624                "};\n"
14625                "void foo()\n"
14626                "{\n"
14627                "  auto shortLambda = [](int i)\n"
14628                "  {\n"
14629                "    return i + 2;\n"
14630                "  };\n"
14631                "  auto longLambda = [](int i, int j)\n"
14632                "  {\n"
14633                "    auto x = i + j;\n"
14634                "    auto y = i * j;\n"
14635                "    return x ^ y;\n"
14636                "  };\n"
14637                "}",
14638                AllmanBraceStyle);
14639 
14640   // Reset
14641   AllmanBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_All;
14642 
14643   // This shouldn't affect ObjC blocks..
14644   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
14645                "  // ...\n"
14646                "  int i;\n"
14647                "}];",
14648                AllmanBraceStyle);
14649   verifyFormat("void (^block)(void) = ^{\n"
14650                "  // ...\n"
14651                "  int i;\n"
14652                "};",
14653                AllmanBraceStyle);
14654   // .. or dict literals.
14655   verifyFormat("void f()\n"
14656                "{\n"
14657                "  // ...\n"
14658                "  [object someMethod:@{@\"a\" : @\"b\"}];\n"
14659                "}",
14660                AllmanBraceStyle);
14661   verifyFormat("void f()\n"
14662                "{\n"
14663                "  // ...\n"
14664                "  [object someMethod:@{a : @\"b\"}];\n"
14665                "}",
14666                AllmanBraceStyle);
14667   verifyFormat("int f()\n"
14668                "{ // comment\n"
14669                "  return 42;\n"
14670                "}",
14671                AllmanBraceStyle);
14672 
14673   AllmanBraceStyle.ColumnLimit = 19;
14674   verifyFormat("void f() { int i; }", AllmanBraceStyle);
14675   AllmanBraceStyle.ColumnLimit = 18;
14676   verifyFormat("void f()\n"
14677                "{\n"
14678                "  int i;\n"
14679                "}",
14680                AllmanBraceStyle);
14681   AllmanBraceStyle.ColumnLimit = 80;
14682 
14683   FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle;
14684   BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine =
14685       FormatStyle::SIS_WithoutElse;
14686   BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
14687   verifyFormat("void f(bool b)\n"
14688                "{\n"
14689                "  if (b)\n"
14690                "  {\n"
14691                "    return;\n"
14692                "  }\n"
14693                "}\n",
14694                BreakBeforeBraceShortIfs);
14695   verifyFormat("void f(bool b)\n"
14696                "{\n"
14697                "  if constexpr (b)\n"
14698                "  {\n"
14699                "    return;\n"
14700                "  }\n"
14701                "}\n",
14702                BreakBeforeBraceShortIfs);
14703   verifyFormat("void f(bool b)\n"
14704                "{\n"
14705                "  if CONSTEXPR (b)\n"
14706                "  {\n"
14707                "    return;\n"
14708                "  }\n"
14709                "}\n",
14710                BreakBeforeBraceShortIfs);
14711   verifyFormat("void f(bool b)\n"
14712                "{\n"
14713                "  if (b) return;\n"
14714                "}\n",
14715                BreakBeforeBraceShortIfs);
14716   verifyFormat("void f(bool b)\n"
14717                "{\n"
14718                "  if constexpr (b) return;\n"
14719                "}\n",
14720                BreakBeforeBraceShortIfs);
14721   verifyFormat("void f(bool b)\n"
14722                "{\n"
14723                "  if CONSTEXPR (b) return;\n"
14724                "}\n",
14725                BreakBeforeBraceShortIfs);
14726   verifyFormat("void f(bool b)\n"
14727                "{\n"
14728                "  while (b)\n"
14729                "  {\n"
14730                "    return;\n"
14731                "  }\n"
14732                "}\n",
14733                BreakBeforeBraceShortIfs);
14734 }
14735 
14736 TEST_F(FormatTest, WhitesmithsBraceBreaking) {
14737   FormatStyle WhitesmithsBraceStyle = getLLVMStyle();
14738   WhitesmithsBraceStyle.BreakBeforeBraces = FormatStyle::BS_Whitesmiths;
14739 
14740   // Make a few changes to the style for testing purposes
14741   WhitesmithsBraceStyle.AllowShortFunctionsOnASingleLine =
14742       FormatStyle::SFS_Empty;
14743   WhitesmithsBraceStyle.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
14744   WhitesmithsBraceStyle.ColumnLimit = 0;
14745 
14746   // FIXME: this test case can't decide whether there should be a blank line
14747   // after the ~D() line or not. It adds one if one doesn't exist in the test
14748   // and it removes the line if one exists.
14749   /*
14750   verifyFormat("class A;\n"
14751                "namespace B\n"
14752                "  {\n"
14753                "class C;\n"
14754                "// Comment\n"
14755                "class D\n"
14756                "  {\n"
14757                "public:\n"
14758                "  D();\n"
14759                "  ~D() {}\n"
14760                "private:\n"
14761                "  enum E\n"
14762                "    {\n"
14763                "    F\n"
14764                "    }\n"
14765                "  };\n"
14766                "  } // namespace B\n",
14767                WhitesmithsBraceStyle);
14768   */
14769 
14770   verifyFormat("namespace a\n"
14771                "  {\n"
14772                "class A\n"
14773                "  {\n"
14774                "  void f()\n"
14775                "    {\n"
14776                "    if (true)\n"
14777                "      {\n"
14778                "      a();\n"
14779                "      b();\n"
14780                "      }\n"
14781                "    }\n"
14782                "  void g()\n"
14783                "    {\n"
14784                "    return;\n"
14785                "    }\n"
14786                "  };\n"
14787                "struct B\n"
14788                "  {\n"
14789                "  int x;\n"
14790                "  };\n"
14791                "  } // namespace a",
14792                WhitesmithsBraceStyle);
14793 
14794   verifyFormat("void f()\n"
14795                "  {\n"
14796                "  if (true)\n"
14797                "    {\n"
14798                "    a();\n"
14799                "    }\n"
14800                "  else if (false)\n"
14801                "    {\n"
14802                "    b();\n"
14803                "    }\n"
14804                "  else\n"
14805                "    {\n"
14806                "    c();\n"
14807                "    }\n"
14808                "  }\n",
14809                WhitesmithsBraceStyle);
14810 
14811   verifyFormat("void f()\n"
14812                "  {\n"
14813                "  for (int i = 0; i < 10; ++i)\n"
14814                "    {\n"
14815                "    a();\n"
14816                "    }\n"
14817                "  while (false)\n"
14818                "    {\n"
14819                "    b();\n"
14820                "    }\n"
14821                "  do\n"
14822                "    {\n"
14823                "    c();\n"
14824                "    } while (false)\n"
14825                "  }\n",
14826                WhitesmithsBraceStyle);
14827 
14828   WhitesmithsBraceStyle.IndentCaseBlocks = true;
14829   verifyFormat("void switchTest1(int a)\n"
14830                "  {\n"
14831                "  switch (a)\n"
14832                "    {\n"
14833                "    case 2:\n"
14834                "      {\n"
14835                "      }\n"
14836                "    break;\n"
14837                "    }\n"
14838                "  }\n",
14839                WhitesmithsBraceStyle);
14840 
14841   verifyFormat("void switchTest2(int a)\n"
14842                "  {\n"
14843                "  switch (a)\n"
14844                "    {\n"
14845                "    case 0:\n"
14846                "    break;\n"
14847                "    case 1:\n"
14848                "      {\n"
14849                "      break;\n"
14850                "      }\n"
14851                "    case 2:\n"
14852                "      {\n"
14853                "      }\n"
14854                "    break;\n"
14855                "    default:\n"
14856                "    break;\n"
14857                "    }\n"
14858                "  }\n",
14859                WhitesmithsBraceStyle);
14860 
14861   verifyFormat("void switchTest3(int a)\n"
14862                "  {\n"
14863                "  switch (a)\n"
14864                "    {\n"
14865                "    case 0:\n"
14866                "      {\n"
14867                "      foo(x);\n"
14868                "      }\n"
14869                "    break;\n"
14870                "    default:\n"
14871                "      {\n"
14872                "      foo(1);\n"
14873                "      }\n"
14874                "    break;\n"
14875                "    }\n"
14876                "  }\n",
14877                WhitesmithsBraceStyle);
14878 
14879   WhitesmithsBraceStyle.IndentCaseBlocks = false;
14880 
14881   verifyFormat("void switchTest4(int a)\n"
14882                "  {\n"
14883                "  switch (a)\n"
14884                "    {\n"
14885                "  case 2:\n"
14886                "    {\n"
14887                "    }\n"
14888                "    break;\n"
14889                "    }\n"
14890                "  }\n",
14891                WhitesmithsBraceStyle);
14892 
14893   verifyFormat("void switchTest5(int a)\n"
14894                "  {\n"
14895                "  switch (a)\n"
14896                "    {\n"
14897                "  case 0:\n"
14898                "    break;\n"
14899                "  case 1:\n"
14900                "    {\n"
14901                "    foo();\n"
14902                "    break;\n"
14903                "    }\n"
14904                "  case 2:\n"
14905                "    {\n"
14906                "    }\n"
14907                "    break;\n"
14908                "  default:\n"
14909                "    break;\n"
14910                "    }\n"
14911                "  }\n",
14912                WhitesmithsBraceStyle);
14913 
14914   verifyFormat("void switchTest6(int a)\n"
14915                "  {\n"
14916                "  switch (a)\n"
14917                "    {\n"
14918                "  case 0:\n"
14919                "    {\n"
14920                "    foo(x);\n"
14921                "    }\n"
14922                "    break;\n"
14923                "  default:\n"
14924                "    {\n"
14925                "    foo(1);\n"
14926                "    }\n"
14927                "    break;\n"
14928                "    }\n"
14929                "  }\n",
14930                WhitesmithsBraceStyle);
14931 
14932   verifyFormat("enum X\n"
14933                "  {\n"
14934                "  Y = 0, // testing\n"
14935                "  }\n",
14936                WhitesmithsBraceStyle);
14937 
14938   verifyFormat("enum X\n"
14939                "  {\n"
14940                "  Y = 0\n"
14941                "  }\n",
14942                WhitesmithsBraceStyle);
14943   verifyFormat("enum X\n"
14944                "  {\n"
14945                "  Y = 0,\n"
14946                "  Z = 1\n"
14947                "  };\n",
14948                WhitesmithsBraceStyle);
14949 
14950   verifyFormat("@interface BSApplicationController ()\n"
14951                "  {\n"
14952                "@private\n"
14953                "  id _extraIvar;\n"
14954                "  }\n"
14955                "@end\n",
14956                WhitesmithsBraceStyle);
14957 
14958   verifyFormat("#ifdef _DEBUG\n"
14959                "int foo(int i = 0)\n"
14960                "#else\n"
14961                "int foo(int i = 5)\n"
14962                "#endif\n"
14963                "  {\n"
14964                "  return i;\n"
14965                "  }",
14966                WhitesmithsBraceStyle);
14967 
14968   verifyFormat("void foo() {}\n"
14969                "void bar()\n"
14970                "#ifdef _DEBUG\n"
14971                "  {\n"
14972                "  foo();\n"
14973                "  }\n"
14974                "#else\n"
14975                "  {\n"
14976                "  }\n"
14977                "#endif",
14978                WhitesmithsBraceStyle);
14979 
14980   verifyFormat("void foobar()\n"
14981                "  {\n"
14982                "  int i = 5;\n"
14983                "  }\n"
14984                "#ifdef _DEBUG\n"
14985                "void bar()\n"
14986                "  {\n"
14987                "  }\n"
14988                "#else\n"
14989                "void bar()\n"
14990                "  {\n"
14991                "  foobar();\n"
14992                "  }\n"
14993                "#endif",
14994                WhitesmithsBraceStyle);
14995 
14996   // This shouldn't affect ObjC blocks..
14997   verifyFormat("[self doSomeThingWithACompletionHandler:^{\n"
14998                "  // ...\n"
14999                "  int i;\n"
15000                "}];",
15001                WhitesmithsBraceStyle);
15002   verifyFormat("void (^block)(void) = ^{\n"
15003                "  // ...\n"
15004                "  int i;\n"
15005                "};",
15006                WhitesmithsBraceStyle);
15007   // .. or dict literals.
15008   verifyFormat("void f()\n"
15009                "  {\n"
15010                "  [object someMethod:@{@\"a\" : @\"b\"}];\n"
15011                "  }",
15012                WhitesmithsBraceStyle);
15013 
15014   verifyFormat("int f()\n"
15015                "  { // comment\n"
15016                "  return 42;\n"
15017                "  }",
15018                WhitesmithsBraceStyle);
15019 
15020   FormatStyle BreakBeforeBraceShortIfs = WhitesmithsBraceStyle;
15021   BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine =
15022       FormatStyle::SIS_Always;
15023   BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true;
15024   verifyFormat("void f(bool b)\n"
15025                "  {\n"
15026                "  if (b)\n"
15027                "    {\n"
15028                "    return;\n"
15029                "    }\n"
15030                "  }\n",
15031                BreakBeforeBraceShortIfs);
15032   verifyFormat("void f(bool b)\n"
15033                "  {\n"
15034                "  if (b) return;\n"
15035                "  }\n",
15036                BreakBeforeBraceShortIfs);
15037   verifyFormat("void f(bool b)\n"
15038                "  {\n"
15039                "  while (b)\n"
15040                "    {\n"
15041                "    return;\n"
15042                "    }\n"
15043                "  }\n",
15044                BreakBeforeBraceShortIfs);
15045 }
15046 
15047 TEST_F(FormatTest, GNUBraceBreaking) {
15048   FormatStyle GNUBraceStyle = getLLVMStyle();
15049   GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU;
15050   verifyFormat("namespace a\n"
15051                "{\n"
15052                "class A\n"
15053                "{\n"
15054                "  void f()\n"
15055                "  {\n"
15056                "    int a;\n"
15057                "    {\n"
15058                "      int b;\n"
15059                "    }\n"
15060                "    if (true)\n"
15061                "      {\n"
15062                "        a();\n"
15063                "        b();\n"
15064                "      }\n"
15065                "  }\n"
15066                "  void g() { return; }\n"
15067                "}\n"
15068                "} // namespace a",
15069                GNUBraceStyle);
15070 
15071   verifyFormat("void f()\n"
15072                "{\n"
15073                "  if (true)\n"
15074                "    {\n"
15075                "      a();\n"
15076                "    }\n"
15077                "  else if (false)\n"
15078                "    {\n"
15079                "      b();\n"
15080                "    }\n"
15081                "  else\n"
15082                "    {\n"
15083                "      c();\n"
15084                "    }\n"
15085                "}\n",
15086                GNUBraceStyle);
15087 
15088   verifyFormat("void f()\n"
15089                "{\n"
15090                "  for (int i = 0; i < 10; ++i)\n"
15091                "    {\n"
15092                "      a();\n"
15093                "    }\n"
15094                "  while (false)\n"
15095                "    {\n"
15096                "      b();\n"
15097                "    }\n"
15098                "  do\n"
15099                "    {\n"
15100                "      c();\n"
15101                "    }\n"
15102                "  while (false);\n"
15103                "}\n",
15104                GNUBraceStyle);
15105 
15106   verifyFormat("void f(int a)\n"
15107                "{\n"
15108                "  switch (a)\n"
15109                "    {\n"
15110                "    case 0:\n"
15111                "      break;\n"
15112                "    case 1:\n"
15113                "      {\n"
15114                "        break;\n"
15115                "      }\n"
15116                "    case 2:\n"
15117                "      {\n"
15118                "      }\n"
15119                "      break;\n"
15120                "    default:\n"
15121                "      break;\n"
15122                "    }\n"
15123                "}\n",
15124                GNUBraceStyle);
15125 
15126   verifyFormat("enum X\n"
15127                "{\n"
15128                "  Y = 0,\n"
15129                "}\n",
15130                GNUBraceStyle);
15131 
15132   verifyFormat("@interface BSApplicationController ()\n"
15133                "{\n"
15134                "@private\n"
15135                "  id _extraIvar;\n"
15136                "}\n"
15137                "@end\n",
15138                GNUBraceStyle);
15139 
15140   verifyFormat("#ifdef _DEBUG\n"
15141                "int foo(int i = 0)\n"
15142                "#else\n"
15143                "int foo(int i = 5)\n"
15144                "#endif\n"
15145                "{\n"
15146                "  return i;\n"
15147                "}",
15148                GNUBraceStyle);
15149 
15150   verifyFormat("void foo() {}\n"
15151                "void bar()\n"
15152                "#ifdef _DEBUG\n"
15153                "{\n"
15154                "  foo();\n"
15155                "}\n"
15156                "#else\n"
15157                "{\n"
15158                "}\n"
15159                "#endif",
15160                GNUBraceStyle);
15161 
15162   verifyFormat("void foobar() { int i = 5; }\n"
15163                "#ifdef _DEBUG\n"
15164                "void bar() {}\n"
15165                "#else\n"
15166                "void bar() { foobar(); }\n"
15167                "#endif",
15168                GNUBraceStyle);
15169 }
15170 
15171 TEST_F(FormatTest, WebKitBraceBreaking) {
15172   FormatStyle WebKitBraceStyle = getLLVMStyle();
15173   WebKitBraceStyle.BreakBeforeBraces = FormatStyle::BS_WebKit;
15174   WebKitBraceStyle.FixNamespaceComments = false;
15175   verifyFormat("namespace a {\n"
15176                "class A {\n"
15177                "  void f()\n"
15178                "  {\n"
15179                "    if (true) {\n"
15180                "      a();\n"
15181                "      b();\n"
15182                "    }\n"
15183                "  }\n"
15184                "  void g() { return; }\n"
15185                "};\n"
15186                "enum E {\n"
15187                "  A,\n"
15188                "  // foo\n"
15189                "  B,\n"
15190                "  C\n"
15191                "};\n"
15192                "struct B {\n"
15193                "  int x;\n"
15194                "};\n"
15195                "}\n",
15196                WebKitBraceStyle);
15197   verifyFormat("struct S {\n"
15198                "  int Type;\n"
15199                "  union {\n"
15200                "    int x;\n"
15201                "    double y;\n"
15202                "  } Value;\n"
15203                "  class C {\n"
15204                "    MyFavoriteType Value;\n"
15205                "  } Class;\n"
15206                "};\n",
15207                WebKitBraceStyle);
15208 }
15209 
15210 TEST_F(FormatTest, CatchExceptionReferenceBinding) {
15211   verifyFormat("void f() {\n"
15212                "  try {\n"
15213                "  } catch (const Exception &e) {\n"
15214                "  }\n"
15215                "}\n",
15216                getLLVMStyle());
15217 }
15218 
15219 TEST_F(FormatTest, UnderstandsPragmas) {
15220   verifyFormat("#pragma omp reduction(| : var)");
15221   verifyFormat("#pragma omp reduction(+ : var)");
15222 
15223   EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string "
15224             "(including parentheses).",
15225             format("#pragma    mark   Any non-hyphenated or hyphenated string "
15226                    "(including parentheses)."));
15227 }
15228 
15229 TEST_F(FormatTest, UnderstandPragmaOption) {
15230   verifyFormat("#pragma option -C -A");
15231 
15232   EXPECT_EQ("#pragma option -C -A", format("#pragma    option   -C   -A"));
15233 }
15234 
15235 TEST_F(FormatTest, OptimizeBreakPenaltyVsExcess) {
15236   FormatStyle Style = getLLVMStyle();
15237   Style.ColumnLimit = 20;
15238 
15239   // See PR41213
15240   EXPECT_EQ("/*\n"
15241             " *\t9012345\n"
15242             " * /8901\n"
15243             " */",
15244             format("/*\n"
15245                    " *\t9012345 /8901\n"
15246                    " */",
15247                    Style));
15248   EXPECT_EQ("/*\n"
15249             " *345678\n"
15250             " *\t/8901\n"
15251             " */",
15252             format("/*\n"
15253                    " *345678\t/8901\n"
15254                    " */",
15255                    Style));
15256 
15257   verifyFormat("int a; // the\n"
15258                "       // comment",
15259                Style);
15260   EXPECT_EQ("int a; /* first line\n"
15261             "        * second\n"
15262             "        * line third\n"
15263             "        * line\n"
15264             "        */",
15265             format("int a; /* first line\n"
15266                    "        * second\n"
15267                    "        * line third\n"
15268                    "        * line\n"
15269                    "        */",
15270                    Style));
15271   EXPECT_EQ("int a; // first line\n"
15272             "       // second\n"
15273             "       // line third\n"
15274             "       // line",
15275             format("int a; // first line\n"
15276                    "       // second line\n"
15277                    "       // third line",
15278                    Style));
15279 
15280   Style.PenaltyExcessCharacter = 90;
15281   verifyFormat("int a; // the comment", Style);
15282   EXPECT_EQ("int a; // the comment\n"
15283             "       // aaa",
15284             format("int a; // the comment aaa", Style));
15285   EXPECT_EQ("int a; /* first line\n"
15286             "        * second line\n"
15287             "        * third line\n"
15288             "        */",
15289             format("int a; /* first line\n"
15290                    "        * second line\n"
15291                    "        * third line\n"
15292                    "        */",
15293                    Style));
15294   EXPECT_EQ("int a; // first line\n"
15295             "       // second line\n"
15296             "       // third line",
15297             format("int a; // first line\n"
15298                    "       // second line\n"
15299                    "       // third line",
15300                    Style));
15301   // FIXME: Investigate why this is not getting the same layout as the test
15302   // above.
15303   EXPECT_EQ("int a; /* first line\n"
15304             "        * second line\n"
15305             "        * third line\n"
15306             "        */",
15307             format("int a; /* first line second line third line"
15308                    "\n*/",
15309                    Style));
15310 
15311   EXPECT_EQ("// foo bar baz bazfoo\n"
15312             "// foo bar foo bar\n",
15313             format("// foo bar baz bazfoo\n"
15314                    "// foo bar foo           bar\n",
15315                    Style));
15316   EXPECT_EQ("// foo bar baz bazfoo\n"
15317             "// foo bar foo bar\n",
15318             format("// foo bar baz      bazfoo\n"
15319                    "// foo            bar foo bar\n",
15320                    Style));
15321 
15322   // FIXME: Optimally, we'd keep bazfoo on the first line and reflow bar to the
15323   // next one.
15324   EXPECT_EQ("// foo bar baz bazfoo\n"
15325             "// bar foo bar\n",
15326             format("// foo bar baz      bazfoo bar\n"
15327                    "// foo            bar\n",
15328                    Style));
15329 
15330   EXPECT_EQ("// foo bar baz bazfoo\n"
15331             "// foo bar baz bazfoo\n"
15332             "// bar foo bar\n",
15333             format("// foo bar baz      bazfoo\n"
15334                    "// foo bar baz      bazfoo bar\n"
15335                    "// foo bar\n",
15336                    Style));
15337 
15338   EXPECT_EQ("// foo bar baz bazfoo\n"
15339             "// foo bar baz bazfoo\n"
15340             "// bar foo bar\n",
15341             format("// foo bar baz      bazfoo\n"
15342                    "// foo bar baz      bazfoo bar\n"
15343                    "// foo           bar\n",
15344                    Style));
15345 
15346   // Make sure we do not keep protruding characters if strict mode reflow is
15347   // cheaper than keeping protruding characters.
15348   Style.ColumnLimit = 21;
15349   EXPECT_EQ(
15350       "// foo foo foo foo\n"
15351       "// foo foo foo foo\n"
15352       "// foo foo foo foo\n",
15353       format("// foo foo foo foo foo foo foo foo foo foo foo foo\n", Style));
15354 
15355   EXPECT_EQ("int a = /* long block\n"
15356             "           comment */\n"
15357             "    42;",
15358             format("int a = /* long block comment */ 42;", Style));
15359 }
15360 
15361 #define EXPECT_ALL_STYLES_EQUAL(Styles)                                        \
15362   for (size_t i = 1; i < Styles.size(); ++i)                                   \
15363   EXPECT_EQ(Styles[0], Styles[i])                                              \
15364       << "Style #" << i << " of " << Styles.size() << " differs from Style #0"
15365 
15366 TEST_F(FormatTest, GetsPredefinedStyleByName) {
15367   SmallVector<FormatStyle, 3> Styles;
15368   Styles.resize(3);
15369 
15370   Styles[0] = getLLVMStyle();
15371   EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1]));
15372   EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2]));
15373   EXPECT_ALL_STYLES_EQUAL(Styles);
15374 
15375   Styles[0] = getGoogleStyle();
15376   EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1]));
15377   EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2]));
15378   EXPECT_ALL_STYLES_EQUAL(Styles);
15379 
15380   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
15381   EXPECT_TRUE(
15382       getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1]));
15383   EXPECT_TRUE(
15384       getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2]));
15385   EXPECT_ALL_STYLES_EQUAL(Styles);
15386 
15387   Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp);
15388   EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1]));
15389   EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2]));
15390   EXPECT_ALL_STYLES_EQUAL(Styles);
15391 
15392   Styles[0] = getMozillaStyle();
15393   EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1]));
15394   EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2]));
15395   EXPECT_ALL_STYLES_EQUAL(Styles);
15396 
15397   Styles[0] = getWebKitStyle();
15398   EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1]));
15399   EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2]));
15400   EXPECT_ALL_STYLES_EQUAL(Styles);
15401 
15402   Styles[0] = getGNUStyle();
15403   EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1]));
15404   EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2]));
15405   EXPECT_ALL_STYLES_EQUAL(Styles);
15406 
15407   EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0]));
15408 }
15409 
15410 TEST_F(FormatTest, GetsCorrectBasedOnStyle) {
15411   SmallVector<FormatStyle, 8> Styles;
15412   Styles.resize(2);
15413 
15414   Styles[0] = getGoogleStyle();
15415   Styles[1] = getLLVMStyle();
15416   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
15417   EXPECT_ALL_STYLES_EQUAL(Styles);
15418 
15419   Styles.resize(5);
15420   Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript);
15421   Styles[1] = getLLVMStyle();
15422   Styles[1].Language = FormatStyle::LK_JavaScript;
15423   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value());
15424 
15425   Styles[2] = getLLVMStyle();
15426   Styles[2].Language = FormatStyle::LK_JavaScript;
15427   EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n"
15428                                   "BasedOnStyle: Google",
15429                                   &Styles[2])
15430                    .value());
15431 
15432   Styles[3] = getLLVMStyle();
15433   Styles[3].Language = FormatStyle::LK_JavaScript;
15434   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n"
15435                                   "Language: JavaScript",
15436                                   &Styles[3])
15437                    .value());
15438 
15439   Styles[4] = getLLVMStyle();
15440   Styles[4].Language = FormatStyle::LK_JavaScript;
15441   EXPECT_EQ(0, parseConfiguration("---\n"
15442                                   "BasedOnStyle: LLVM\n"
15443                                   "IndentWidth: 123\n"
15444                                   "---\n"
15445                                   "BasedOnStyle: Google\n"
15446                                   "Language: JavaScript",
15447                                   &Styles[4])
15448                    .value());
15449   EXPECT_ALL_STYLES_EQUAL(Styles);
15450 }
15451 
15452 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME)                             \
15453   Style.FIELD = false;                                                         \
15454   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value());      \
15455   EXPECT_TRUE(Style.FIELD);                                                    \
15456   EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value());     \
15457   EXPECT_FALSE(Style.FIELD);
15458 
15459 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD)
15460 
15461 #define CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, CONFIG_NAME)              \
15462   Style.STRUCT.FIELD = false;                                                  \
15463   EXPECT_EQ(0,                                                                 \
15464             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": true", &Style)   \
15465                 .value());                                                     \
15466   EXPECT_TRUE(Style.STRUCT.FIELD);                                             \
15467   EXPECT_EQ(0,                                                                 \
15468             parseConfiguration(#STRUCT ":\n  " CONFIG_NAME ": false", &Style)  \
15469                 .value());                                                     \
15470   EXPECT_FALSE(Style.STRUCT.FIELD);
15471 
15472 #define CHECK_PARSE_NESTED_BOOL(STRUCT, FIELD)                                 \
15473   CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, #FIELD)
15474 
15475 #define CHECK_PARSE(TEXT, FIELD, VALUE)                                        \
15476   EXPECT_NE(VALUE, Style.FIELD) << "Initial value already the same!";          \
15477   EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value());                      \
15478   EXPECT_EQ(VALUE, Style.FIELD) << "Unexpected value after parsing!"
15479 
15480 TEST_F(FormatTest, ParsesConfigurationBools) {
15481   FormatStyle Style = {};
15482   Style.Language = FormatStyle::LK_Cpp;
15483   CHECK_PARSE_BOOL(AlignTrailingComments);
15484   CHECK_PARSE_BOOL(AllowAllArgumentsOnNextLine);
15485   CHECK_PARSE_BOOL(AllowAllConstructorInitializersOnNextLine);
15486   CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
15487   CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine);
15488   CHECK_PARSE_BOOL(AllowShortEnumsOnASingleLine);
15489   CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
15490   CHECK_PARSE_BOOL(BinPackArguments);
15491   CHECK_PARSE_BOOL(BinPackParameters);
15492   CHECK_PARSE_BOOL(BreakAfterJavaFieldAnnotations);
15493   CHECK_PARSE_BOOL(BreakBeforeConceptDeclarations);
15494   CHECK_PARSE_BOOL(BreakBeforeTernaryOperators);
15495   CHECK_PARSE_BOOL(BreakStringLiterals);
15496   CHECK_PARSE_BOOL(CompactNamespaces);
15497   CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine);
15498   CHECK_PARSE_BOOL(DeriveLineEnding);
15499   CHECK_PARSE_BOOL(DerivePointerAlignment);
15500   CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding");
15501   CHECK_PARSE_BOOL(DisableFormat);
15502   CHECK_PARSE_BOOL(IndentAccessModifiers);
15503   CHECK_PARSE_BOOL(IndentCaseLabels);
15504   CHECK_PARSE_BOOL(IndentCaseBlocks);
15505   CHECK_PARSE_BOOL(IndentGotoLabels);
15506   CHECK_PARSE_BOOL(IndentRequires);
15507   CHECK_PARSE_BOOL(IndentWrappedFunctionNames);
15508   CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks);
15509   CHECK_PARSE_BOOL(ObjCSpaceAfterProperty);
15510   CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
15511   CHECK_PARSE_BOOL(Cpp11BracedListStyle);
15512   CHECK_PARSE_BOOL(ReflowComments);
15513   CHECK_PARSE_BOOL(SortUsingDeclarations);
15514   CHECK_PARSE_BOOL(SpacesInParentheses);
15515   CHECK_PARSE_BOOL(SpacesInSquareBrackets);
15516   CHECK_PARSE_BOOL(SpacesInAngles);
15517   CHECK_PARSE_BOOL(SpacesInConditionalStatement);
15518   CHECK_PARSE_BOOL(SpaceInEmptyBlock);
15519   CHECK_PARSE_BOOL(SpaceInEmptyParentheses);
15520   CHECK_PARSE_BOOL(SpacesInContainerLiterals);
15521   CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses);
15522   CHECK_PARSE_BOOL(SpaceAfterCStyleCast);
15523   CHECK_PARSE_BOOL(SpaceAfterTemplateKeyword);
15524   CHECK_PARSE_BOOL(SpaceAfterLogicalNot);
15525   CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators);
15526   CHECK_PARSE_BOOL(SpaceBeforeCaseColon);
15527   CHECK_PARSE_BOOL(SpaceBeforeCpp11BracedList);
15528   CHECK_PARSE_BOOL(SpaceBeforeCtorInitializerColon);
15529   CHECK_PARSE_BOOL(SpaceBeforeInheritanceColon);
15530   CHECK_PARSE_BOOL(SpaceBeforeRangeBasedForLoopColon);
15531   CHECK_PARSE_BOOL(SpaceBeforeSquareBrackets);
15532   CHECK_PARSE_BOOL(UseCRLF);
15533 
15534   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterCaseLabel);
15535   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterClass);
15536   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterEnum);
15537   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterFunction);
15538   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterNamespace);
15539   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterObjCDeclaration);
15540   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterStruct);
15541   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterUnion);
15542   CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterExternBlock);
15543   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeCatch);
15544   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeElse);
15545   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeLambdaBody);
15546   CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeWhile);
15547   CHECK_PARSE_NESTED_BOOL(BraceWrapping, IndentBraces);
15548   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyFunction);
15549   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyRecord);
15550   CHECK_PARSE_NESTED_BOOL(BraceWrapping, SplitEmptyNamespace);
15551 }
15552 
15553 #undef CHECK_PARSE_BOOL
15554 
15555 TEST_F(FormatTest, ParsesConfiguration) {
15556   FormatStyle Style = {};
15557   Style.Language = FormatStyle::LK_Cpp;
15558   CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234);
15559   CHECK_PARSE("ConstructorInitializerIndentWidth: 1234",
15560               ConstructorInitializerIndentWidth, 1234u);
15561   CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u);
15562   CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u);
15563   CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u);
15564   CHECK_PARSE("PenaltyBreakAssignment: 1234", PenaltyBreakAssignment, 1234u);
15565   CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234",
15566               PenaltyBreakBeforeFirstCallParameter, 1234u);
15567   CHECK_PARSE("PenaltyBreakTemplateDeclaration: 1234",
15568               PenaltyBreakTemplateDeclaration, 1234u);
15569   CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u);
15570   CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234",
15571               PenaltyReturnTypeOnItsOwnLine, 1234u);
15572   CHECK_PARSE("SpacesBeforeTrailingComments: 1234",
15573               SpacesBeforeTrailingComments, 1234u);
15574   CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u);
15575   CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u);
15576   CHECK_PARSE("CommentPragmas: '// abc$'", CommentPragmas, "// abc$");
15577 
15578   Style.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
15579   CHECK_PARSE("AlignConsecutiveAssignments: None", AlignConsecutiveAssignments,
15580               FormatStyle::ACS_None);
15581   CHECK_PARSE("AlignConsecutiveAssignments: Consecutive",
15582               AlignConsecutiveAssignments, FormatStyle::ACS_Consecutive);
15583   CHECK_PARSE("AlignConsecutiveAssignments: AcrossEmptyLines",
15584               AlignConsecutiveAssignments, FormatStyle::ACS_AcrossEmptyLines);
15585   CHECK_PARSE("AlignConsecutiveAssignments: AcrossEmptyLinesAndComments",
15586               AlignConsecutiveAssignments,
15587               FormatStyle::ACS_AcrossEmptyLinesAndComments);
15588   // For backwards compability, false / true should still parse
15589   CHECK_PARSE("AlignConsecutiveAssignments: false", AlignConsecutiveAssignments,
15590               FormatStyle::ACS_None);
15591   CHECK_PARSE("AlignConsecutiveAssignments: true", AlignConsecutiveAssignments,
15592               FormatStyle::ACS_Consecutive);
15593 
15594   Style.AlignConsecutiveBitFields = FormatStyle::ACS_Consecutive;
15595   CHECK_PARSE("AlignConsecutiveBitFields: None", AlignConsecutiveBitFields,
15596               FormatStyle::ACS_None);
15597   CHECK_PARSE("AlignConsecutiveBitFields: Consecutive",
15598               AlignConsecutiveBitFields, FormatStyle::ACS_Consecutive);
15599   CHECK_PARSE("AlignConsecutiveBitFields: AcrossEmptyLines",
15600               AlignConsecutiveBitFields, FormatStyle::ACS_AcrossEmptyLines);
15601   CHECK_PARSE("AlignConsecutiveBitFields: AcrossEmptyLinesAndComments",
15602               AlignConsecutiveBitFields,
15603               FormatStyle::ACS_AcrossEmptyLinesAndComments);
15604   // For backwards compability, false / true should still parse
15605   CHECK_PARSE("AlignConsecutiveBitFields: false", AlignConsecutiveBitFields,
15606               FormatStyle::ACS_None);
15607   CHECK_PARSE("AlignConsecutiveBitFields: true", AlignConsecutiveBitFields,
15608               FormatStyle::ACS_Consecutive);
15609 
15610   Style.AlignConsecutiveMacros = FormatStyle::ACS_Consecutive;
15611   CHECK_PARSE("AlignConsecutiveMacros: None", AlignConsecutiveMacros,
15612               FormatStyle::ACS_None);
15613   CHECK_PARSE("AlignConsecutiveMacros: Consecutive", AlignConsecutiveMacros,
15614               FormatStyle::ACS_Consecutive);
15615   CHECK_PARSE("AlignConsecutiveMacros: AcrossEmptyLines",
15616               AlignConsecutiveMacros, FormatStyle::ACS_AcrossEmptyLines);
15617   CHECK_PARSE("AlignConsecutiveMacros: AcrossEmptyLinesAndComments",
15618               AlignConsecutiveMacros,
15619               FormatStyle::ACS_AcrossEmptyLinesAndComments);
15620   // For backwards compability, false / true should still parse
15621   CHECK_PARSE("AlignConsecutiveMacros: false", AlignConsecutiveMacros,
15622               FormatStyle::ACS_None);
15623   CHECK_PARSE("AlignConsecutiveMacros: true", AlignConsecutiveMacros,
15624               FormatStyle::ACS_Consecutive);
15625 
15626   Style.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
15627   CHECK_PARSE("AlignConsecutiveDeclarations: None",
15628               AlignConsecutiveDeclarations, FormatStyle::ACS_None);
15629   CHECK_PARSE("AlignConsecutiveDeclarations: Consecutive",
15630               AlignConsecutiveDeclarations, FormatStyle::ACS_Consecutive);
15631   CHECK_PARSE("AlignConsecutiveDeclarations: AcrossEmptyLines",
15632               AlignConsecutiveDeclarations, FormatStyle::ACS_AcrossEmptyLines);
15633   CHECK_PARSE("AlignConsecutiveDeclarations: AcrossEmptyLinesAndComments",
15634               AlignConsecutiveDeclarations,
15635               FormatStyle::ACS_AcrossEmptyLinesAndComments);
15636   // For backwards compability, false / true should still parse
15637   CHECK_PARSE("AlignConsecutiveDeclarations: false",
15638               AlignConsecutiveDeclarations, FormatStyle::ACS_None);
15639   CHECK_PARSE("AlignConsecutiveDeclarations: true",
15640               AlignConsecutiveDeclarations, FormatStyle::ACS_Consecutive);
15641 
15642   Style.PointerAlignment = FormatStyle::PAS_Middle;
15643   CHECK_PARSE("PointerAlignment: Left", PointerAlignment,
15644               FormatStyle::PAS_Left);
15645   CHECK_PARSE("PointerAlignment: Right", PointerAlignment,
15646               FormatStyle::PAS_Right);
15647   CHECK_PARSE("PointerAlignment: Middle", PointerAlignment,
15648               FormatStyle::PAS_Middle);
15649   // For backward compatibility:
15650   CHECK_PARSE("PointerBindsToType: Left", PointerAlignment,
15651               FormatStyle::PAS_Left);
15652   CHECK_PARSE("PointerBindsToType: Right", PointerAlignment,
15653               FormatStyle::PAS_Right);
15654   CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment,
15655               FormatStyle::PAS_Middle);
15656 
15657   Style.Standard = FormatStyle::LS_Auto;
15658   CHECK_PARSE("Standard: c++03", Standard, FormatStyle::LS_Cpp03);
15659   CHECK_PARSE("Standard: c++11", Standard, FormatStyle::LS_Cpp11);
15660   CHECK_PARSE("Standard: c++14", Standard, FormatStyle::LS_Cpp14);
15661   CHECK_PARSE("Standard: c++17", Standard, FormatStyle::LS_Cpp17);
15662   CHECK_PARSE("Standard: c++20", Standard, FormatStyle::LS_Cpp20);
15663   CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto);
15664   CHECK_PARSE("Standard: Latest", Standard, FormatStyle::LS_Latest);
15665   // Legacy aliases:
15666   CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03);
15667   CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Latest);
15668   CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03);
15669   CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11);
15670 
15671   Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All;
15672   CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment",
15673               BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment);
15674   CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators,
15675               FormatStyle::BOS_None);
15676   CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators,
15677               FormatStyle::BOS_All);
15678   // For backward compatibility:
15679   CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators,
15680               FormatStyle::BOS_None);
15681   CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators,
15682               FormatStyle::BOS_All);
15683 
15684   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
15685   CHECK_PARSE("BreakConstructorInitializers: BeforeComma",
15686               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
15687   CHECK_PARSE("BreakConstructorInitializers: AfterColon",
15688               BreakConstructorInitializers, FormatStyle::BCIS_AfterColon);
15689   CHECK_PARSE("BreakConstructorInitializers: BeforeColon",
15690               BreakConstructorInitializers, FormatStyle::BCIS_BeforeColon);
15691   // For backward compatibility:
15692   CHECK_PARSE("BreakConstructorInitializersBeforeComma: true",
15693               BreakConstructorInitializers, FormatStyle::BCIS_BeforeComma);
15694 
15695   Style.BreakInheritanceList = FormatStyle::BILS_BeforeColon;
15696   CHECK_PARSE("BreakInheritanceList: BeforeComma", BreakInheritanceList,
15697               FormatStyle::BILS_BeforeComma);
15698   CHECK_PARSE("BreakInheritanceList: AfterColon", BreakInheritanceList,
15699               FormatStyle::BILS_AfterColon);
15700   CHECK_PARSE("BreakInheritanceList: BeforeColon", BreakInheritanceList,
15701               FormatStyle::BILS_BeforeColon);
15702   // For backward compatibility:
15703   CHECK_PARSE("BreakBeforeInheritanceComma: true", BreakInheritanceList,
15704               FormatStyle::BILS_BeforeComma);
15705 
15706   Style.EmptyLineBeforeAccessModifier = FormatStyle::ELBAMS_LogicalBlock;
15707   CHECK_PARSE("EmptyLineBeforeAccessModifier: Never",
15708               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Never);
15709   CHECK_PARSE("EmptyLineBeforeAccessModifier: Leave",
15710               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Leave);
15711   CHECK_PARSE("EmptyLineBeforeAccessModifier: LogicalBlock",
15712               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_LogicalBlock);
15713   CHECK_PARSE("EmptyLineBeforeAccessModifier: Always",
15714               EmptyLineBeforeAccessModifier, FormatStyle::ELBAMS_Always);
15715 
15716   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
15717   CHECK_PARSE("AlignAfterOpenBracket: Align", AlignAfterOpenBracket,
15718               FormatStyle::BAS_Align);
15719   CHECK_PARSE("AlignAfterOpenBracket: DontAlign", AlignAfterOpenBracket,
15720               FormatStyle::BAS_DontAlign);
15721   CHECK_PARSE("AlignAfterOpenBracket: AlwaysBreak", AlignAfterOpenBracket,
15722               FormatStyle::BAS_AlwaysBreak);
15723   // For backward compatibility:
15724   CHECK_PARSE("AlignAfterOpenBracket: false", AlignAfterOpenBracket,
15725               FormatStyle::BAS_DontAlign);
15726   CHECK_PARSE("AlignAfterOpenBracket: true", AlignAfterOpenBracket,
15727               FormatStyle::BAS_Align);
15728 
15729   Style.AlignEscapedNewlines = FormatStyle::ENAS_Left;
15730   CHECK_PARSE("AlignEscapedNewlines: DontAlign", AlignEscapedNewlines,
15731               FormatStyle::ENAS_DontAlign);
15732   CHECK_PARSE("AlignEscapedNewlines: Left", AlignEscapedNewlines,
15733               FormatStyle::ENAS_Left);
15734   CHECK_PARSE("AlignEscapedNewlines: Right", AlignEscapedNewlines,
15735               FormatStyle::ENAS_Right);
15736   // For backward compatibility:
15737   CHECK_PARSE("AlignEscapedNewlinesLeft: true", AlignEscapedNewlines,
15738               FormatStyle::ENAS_Left);
15739   CHECK_PARSE("AlignEscapedNewlinesLeft: false", AlignEscapedNewlines,
15740               FormatStyle::ENAS_Right);
15741 
15742   Style.AlignOperands = FormatStyle::OAS_Align;
15743   CHECK_PARSE("AlignOperands: DontAlign", AlignOperands,
15744               FormatStyle::OAS_DontAlign);
15745   CHECK_PARSE("AlignOperands: Align", AlignOperands, FormatStyle::OAS_Align);
15746   CHECK_PARSE("AlignOperands: AlignAfterOperator", AlignOperands,
15747               FormatStyle::OAS_AlignAfterOperator);
15748   // For backward compatibility:
15749   CHECK_PARSE("AlignOperands: false", AlignOperands,
15750               FormatStyle::OAS_DontAlign);
15751   CHECK_PARSE("AlignOperands: true", AlignOperands, FormatStyle::OAS_Align);
15752 
15753   Style.UseTab = FormatStyle::UT_ForIndentation;
15754   CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never);
15755   CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation);
15756   CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always);
15757   CHECK_PARSE("UseTab: ForContinuationAndIndentation", UseTab,
15758               FormatStyle::UT_ForContinuationAndIndentation);
15759   CHECK_PARSE("UseTab: AlignWithSpaces", UseTab,
15760               FormatStyle::UT_AlignWithSpaces);
15761   // For backward compatibility:
15762   CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never);
15763   CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always);
15764 
15765   Style.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Empty;
15766   CHECK_PARSE("AllowShortBlocksOnASingleLine: Never",
15767               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
15768   CHECK_PARSE("AllowShortBlocksOnASingleLine: Empty",
15769               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Empty);
15770   CHECK_PARSE("AllowShortBlocksOnASingleLine: Always",
15771               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
15772   // For backward compatibility:
15773   CHECK_PARSE("AllowShortBlocksOnASingleLine: false",
15774               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Never);
15775   CHECK_PARSE("AllowShortBlocksOnASingleLine: true",
15776               AllowShortBlocksOnASingleLine, FormatStyle::SBS_Always);
15777 
15778   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline;
15779   CHECK_PARSE("AllowShortFunctionsOnASingleLine: None",
15780               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
15781   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline",
15782               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline);
15783   CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty",
15784               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty);
15785   CHECK_PARSE("AllowShortFunctionsOnASingleLine: All",
15786               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
15787   // For backward compatibility:
15788   CHECK_PARSE("AllowShortFunctionsOnASingleLine: false",
15789               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None);
15790   CHECK_PARSE("AllowShortFunctionsOnASingleLine: true",
15791               AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All);
15792 
15793   Style.SpaceAroundPointerQualifiers = FormatStyle::SAPQ_Both;
15794   CHECK_PARSE("SpaceAroundPointerQualifiers: Default",
15795               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Default);
15796   CHECK_PARSE("SpaceAroundPointerQualifiers: Before",
15797               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Before);
15798   CHECK_PARSE("SpaceAroundPointerQualifiers: After",
15799               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_After);
15800   CHECK_PARSE("SpaceAroundPointerQualifiers: Both",
15801               SpaceAroundPointerQualifiers, FormatStyle::SAPQ_Both);
15802 
15803   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
15804   CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens,
15805               FormatStyle::SBPO_Never);
15806   CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens,
15807               FormatStyle::SBPO_Always);
15808   CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens,
15809               FormatStyle::SBPO_ControlStatements);
15810   CHECK_PARSE("SpaceBeforeParens: NonEmptyParentheses", SpaceBeforeParens,
15811               FormatStyle::SBPO_NonEmptyParentheses);
15812   // For backward compatibility:
15813   CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens,
15814               FormatStyle::SBPO_Never);
15815   CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens,
15816               FormatStyle::SBPO_ControlStatements);
15817 
15818   Style.ColumnLimit = 123;
15819   FormatStyle BaseStyle = getLLVMStyle();
15820   CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
15821   CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u);
15822 
15823   Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
15824   CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces,
15825               FormatStyle::BS_Attach);
15826   CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces,
15827               FormatStyle::BS_Linux);
15828   CHECK_PARSE("BreakBeforeBraces: Mozilla", BreakBeforeBraces,
15829               FormatStyle::BS_Mozilla);
15830   CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces,
15831               FormatStyle::BS_Stroustrup);
15832   CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces,
15833               FormatStyle::BS_Allman);
15834   CHECK_PARSE("BreakBeforeBraces: Whitesmiths", BreakBeforeBraces,
15835               FormatStyle::BS_Whitesmiths);
15836   CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU);
15837   CHECK_PARSE("BreakBeforeBraces: WebKit", BreakBeforeBraces,
15838               FormatStyle::BS_WebKit);
15839   CHECK_PARSE("BreakBeforeBraces: Custom", BreakBeforeBraces,
15840               FormatStyle::BS_Custom);
15841 
15842   Style.BraceWrapping.AfterControlStatement = FormatStyle::BWACS_Never;
15843   CHECK_PARSE("BraceWrapping:\n"
15844               "  AfterControlStatement: MultiLine",
15845               BraceWrapping.AfterControlStatement,
15846               FormatStyle::BWACS_MultiLine);
15847   CHECK_PARSE("BraceWrapping:\n"
15848               "  AfterControlStatement: Always",
15849               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
15850   CHECK_PARSE("BraceWrapping:\n"
15851               "  AfterControlStatement: Never",
15852               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
15853   // For backward compatibility:
15854   CHECK_PARSE("BraceWrapping:\n"
15855               "  AfterControlStatement: true",
15856               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Always);
15857   CHECK_PARSE("BraceWrapping:\n"
15858               "  AfterControlStatement: false",
15859               BraceWrapping.AfterControlStatement, FormatStyle::BWACS_Never);
15860 
15861   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
15862   CHECK_PARSE("AlwaysBreakAfterReturnType: None", AlwaysBreakAfterReturnType,
15863               FormatStyle::RTBS_None);
15864   CHECK_PARSE("AlwaysBreakAfterReturnType: All", AlwaysBreakAfterReturnType,
15865               FormatStyle::RTBS_All);
15866   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevel",
15867               AlwaysBreakAfterReturnType, FormatStyle::RTBS_TopLevel);
15868   CHECK_PARSE("AlwaysBreakAfterReturnType: AllDefinitions",
15869               AlwaysBreakAfterReturnType, FormatStyle::RTBS_AllDefinitions);
15870   CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevelDefinitions",
15871               AlwaysBreakAfterReturnType,
15872               FormatStyle::RTBS_TopLevelDefinitions);
15873 
15874   Style.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
15875   CHECK_PARSE("AlwaysBreakTemplateDeclarations: No",
15876               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_No);
15877   CHECK_PARSE("AlwaysBreakTemplateDeclarations: MultiLine",
15878               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
15879   CHECK_PARSE("AlwaysBreakTemplateDeclarations: Yes",
15880               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
15881   CHECK_PARSE("AlwaysBreakTemplateDeclarations: false",
15882               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_MultiLine);
15883   CHECK_PARSE("AlwaysBreakTemplateDeclarations: true",
15884               AlwaysBreakTemplateDeclarations, FormatStyle::BTDS_Yes);
15885 
15886   Style.AlwaysBreakAfterDefinitionReturnType = FormatStyle::DRTBS_All;
15887   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: None",
15888               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_None);
15889   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: All",
15890               AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_All);
15891   CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: TopLevel",
15892               AlwaysBreakAfterDefinitionReturnType,
15893               FormatStyle::DRTBS_TopLevel);
15894 
15895   Style.NamespaceIndentation = FormatStyle::NI_All;
15896   CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation,
15897               FormatStyle::NI_None);
15898   CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation,
15899               FormatStyle::NI_Inner);
15900   CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation,
15901               FormatStyle::NI_All);
15902 
15903   Style.AllowShortIfStatementsOnASingleLine = FormatStyle::SIS_Always;
15904   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Never",
15905               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
15906   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: WithoutElse",
15907               AllowShortIfStatementsOnASingleLine,
15908               FormatStyle::SIS_WithoutElse);
15909   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: Always",
15910               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Always);
15911   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: false",
15912               AllowShortIfStatementsOnASingleLine, FormatStyle::SIS_Never);
15913   CHECK_PARSE("AllowShortIfStatementsOnASingleLine: true",
15914               AllowShortIfStatementsOnASingleLine,
15915               FormatStyle::SIS_WithoutElse);
15916 
15917   Style.IndentExternBlock = FormatStyle::IEBS_NoIndent;
15918   CHECK_PARSE("IndentExternBlock: AfterExternBlock", IndentExternBlock,
15919               FormatStyle::IEBS_AfterExternBlock);
15920   CHECK_PARSE("IndentExternBlock: Indent", IndentExternBlock,
15921               FormatStyle::IEBS_Indent);
15922   CHECK_PARSE("IndentExternBlock: NoIndent", IndentExternBlock,
15923               FormatStyle::IEBS_NoIndent);
15924   CHECK_PARSE("IndentExternBlock: true", IndentExternBlock,
15925               FormatStyle::IEBS_Indent);
15926   CHECK_PARSE("IndentExternBlock: false", IndentExternBlock,
15927               FormatStyle::IEBS_NoIndent);
15928 
15929   Style.BitFieldColonSpacing = FormatStyle::BFCS_None;
15930   CHECK_PARSE("BitFieldColonSpacing: Both", BitFieldColonSpacing,
15931               FormatStyle::BFCS_Both);
15932   CHECK_PARSE("BitFieldColonSpacing: None", BitFieldColonSpacing,
15933               FormatStyle::BFCS_None);
15934   CHECK_PARSE("BitFieldColonSpacing: Before", BitFieldColonSpacing,
15935               FormatStyle::BFCS_Before);
15936   CHECK_PARSE("BitFieldColonSpacing: After", BitFieldColonSpacing,
15937               FormatStyle::BFCS_After);
15938 
15939   Style.SortJavaStaticImport = FormatStyle::SJSIO_Before;
15940   CHECK_PARSE("SortJavaStaticImport: After", SortJavaStaticImport,
15941               FormatStyle::SJSIO_After);
15942   CHECK_PARSE("SortJavaStaticImport: Before", SortJavaStaticImport,
15943               FormatStyle::SJSIO_Before);
15944 
15945   // FIXME: This is required because parsing a configuration simply overwrites
15946   // the first N elements of the list instead of resetting it.
15947   Style.ForEachMacros.clear();
15948   std::vector<std::string> BoostForeach;
15949   BoostForeach.push_back("BOOST_FOREACH");
15950   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach);
15951   std::vector<std::string> BoostAndQForeach;
15952   BoostAndQForeach.push_back("BOOST_FOREACH");
15953   BoostAndQForeach.push_back("Q_FOREACH");
15954   CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros,
15955               BoostAndQForeach);
15956 
15957   Style.AttributeMacros.clear();
15958   CHECK_PARSE("BasedOnStyle: LLVM", AttributeMacros,
15959               std::vector<std::string>{"__capability"});
15960   CHECK_PARSE("AttributeMacros: [attr1, attr2]", AttributeMacros,
15961               std::vector<std::string>({"attr1", "attr2"}));
15962 
15963   Style.StatementAttributeLikeMacros.clear();
15964   CHECK_PARSE("StatementAttributeLikeMacros: [emit,Q_EMIT]",
15965               StatementAttributeLikeMacros,
15966               std::vector<std::string>({"emit", "Q_EMIT"}));
15967 
15968   Style.StatementMacros.clear();
15969   CHECK_PARSE("StatementMacros: [QUNUSED]", StatementMacros,
15970               std::vector<std::string>{"QUNUSED"});
15971   CHECK_PARSE("StatementMacros: [QUNUSED, QT_REQUIRE_VERSION]", StatementMacros,
15972               std::vector<std::string>({"QUNUSED", "QT_REQUIRE_VERSION"}));
15973 
15974   Style.NamespaceMacros.clear();
15975   CHECK_PARSE("NamespaceMacros: [TESTSUITE]", NamespaceMacros,
15976               std::vector<std::string>{"TESTSUITE"});
15977   CHECK_PARSE("NamespaceMacros: [TESTSUITE, SUITE]", NamespaceMacros,
15978               std::vector<std::string>({"TESTSUITE", "SUITE"}));
15979 
15980   Style.WhitespaceSensitiveMacros.clear();
15981   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE]",
15982               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
15983   CHECK_PARSE("WhitespaceSensitiveMacros: [STRINGIZE, ASSERT]",
15984               WhitespaceSensitiveMacros,
15985               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
15986   Style.WhitespaceSensitiveMacros.clear();
15987   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE']",
15988               WhitespaceSensitiveMacros, std::vector<std::string>{"STRINGIZE"});
15989   CHECK_PARSE("WhitespaceSensitiveMacros: ['STRINGIZE', 'ASSERT']",
15990               WhitespaceSensitiveMacros,
15991               std::vector<std::string>({"STRINGIZE", "ASSERT"}));
15992 
15993   Style.IncludeStyle.IncludeCategories.clear();
15994   std::vector<tooling::IncludeStyle::IncludeCategory> ExpectedCategories = {
15995       {"abc/.*", 2, 0, false}, {".*", 1, 0, true}};
15996   CHECK_PARSE("IncludeCategories:\n"
15997               "  - Regex: abc/.*\n"
15998               "    Priority: 2\n"
15999               "  - Regex: .*\n"
16000               "    Priority: 1\n"
16001               "    CaseSensitive: true\n",
16002               IncludeStyle.IncludeCategories, ExpectedCategories);
16003   CHECK_PARSE("IncludeIsMainRegex: 'abc$'", IncludeStyle.IncludeIsMainRegex,
16004               "abc$");
16005   CHECK_PARSE("IncludeIsMainSourceRegex: 'abc$'",
16006               IncludeStyle.IncludeIsMainSourceRegex, "abc$");
16007 
16008   Style.SortIncludes = FormatStyle::SI_Never;
16009   CHECK_PARSE("SortIncludes: true", SortIncludes,
16010               FormatStyle::SI_CaseInsensitive);
16011   CHECK_PARSE("SortIncludes: false", SortIncludes, FormatStyle::SI_Never);
16012   CHECK_PARSE("SortIncludes: CaseInsensitive", SortIncludes,
16013               FormatStyle::SI_CaseInsensitive);
16014   CHECK_PARSE("SortIncludes: CaseSensitive", SortIncludes,
16015               FormatStyle::SI_CaseSensitive);
16016   CHECK_PARSE("SortIncludes: Never", SortIncludes, FormatStyle::SI_Never);
16017 
16018   Style.RawStringFormats.clear();
16019   std::vector<FormatStyle::RawStringFormat> ExpectedRawStringFormats = {
16020       {
16021           FormatStyle::LK_TextProto,
16022           {"pb", "proto"},
16023           {"PARSE_TEXT_PROTO"},
16024           /*CanonicalDelimiter=*/"",
16025           "llvm",
16026       },
16027       {
16028           FormatStyle::LK_Cpp,
16029           {"cc", "cpp"},
16030           {"C_CODEBLOCK", "CPPEVAL"},
16031           /*CanonicalDelimiter=*/"cc",
16032           /*BasedOnStyle=*/"",
16033       },
16034   };
16035 
16036   CHECK_PARSE("RawStringFormats:\n"
16037               "  - Language: TextProto\n"
16038               "    Delimiters:\n"
16039               "      - 'pb'\n"
16040               "      - 'proto'\n"
16041               "    EnclosingFunctions:\n"
16042               "      - 'PARSE_TEXT_PROTO'\n"
16043               "    BasedOnStyle: llvm\n"
16044               "  - Language: Cpp\n"
16045               "    Delimiters:\n"
16046               "      - 'cc'\n"
16047               "      - 'cpp'\n"
16048               "    EnclosingFunctions:\n"
16049               "      - 'C_CODEBLOCK'\n"
16050               "      - 'CPPEVAL'\n"
16051               "    CanonicalDelimiter: 'cc'",
16052               RawStringFormats, ExpectedRawStringFormats);
16053 
16054   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
16055               "  Minimum: 0\n"
16056               "  Maximum: 0",
16057               SpacesInLineCommentPrefix.Minimum, 0u);
16058   EXPECT_EQ(Style.SpacesInLineCommentPrefix.Maximum, 0u);
16059   Style.SpacesInLineCommentPrefix.Minimum = 1;
16060   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
16061               "  Minimum: 2",
16062               SpacesInLineCommentPrefix.Minimum, 0u);
16063   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
16064               "  Maximum: -1",
16065               SpacesInLineCommentPrefix.Maximum, -1u);
16066   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
16067               "  Minimum: 2",
16068               SpacesInLineCommentPrefix.Minimum, 2u);
16069   CHECK_PARSE("SpacesInLineCommentPrefix:\n"
16070               "  Maximum: 1",
16071               SpacesInLineCommentPrefix.Maximum, 1u);
16072   EXPECT_EQ(Style.SpacesInLineCommentPrefix.Minimum, 1u);
16073 }
16074 
16075 TEST_F(FormatTest, ParsesConfigurationWithLanguages) {
16076   FormatStyle Style = {};
16077   Style.Language = FormatStyle::LK_Cpp;
16078   CHECK_PARSE("Language: Cpp\n"
16079               "IndentWidth: 12",
16080               IndentWidth, 12u);
16081   EXPECT_EQ(parseConfiguration("Language: JavaScript\n"
16082                                "IndentWidth: 34",
16083                                &Style),
16084             ParseError::Unsuitable);
16085   FormatStyle BinPackedTCS = {};
16086   BinPackedTCS.Language = FormatStyle::LK_JavaScript;
16087   EXPECT_EQ(parseConfiguration("BinPackArguments: true\n"
16088                                "InsertTrailingCommas: Wrapped",
16089                                &BinPackedTCS),
16090             ParseError::BinPackTrailingCommaConflict);
16091   EXPECT_EQ(12u, Style.IndentWidth);
16092   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
16093   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
16094 
16095   Style.Language = FormatStyle::LK_JavaScript;
16096   CHECK_PARSE("Language: JavaScript\n"
16097               "IndentWidth: 12",
16098               IndentWidth, 12u);
16099   CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u);
16100   EXPECT_EQ(parseConfiguration("Language: Cpp\n"
16101                                "IndentWidth: 34",
16102                                &Style),
16103             ParseError::Unsuitable);
16104   EXPECT_EQ(23u, Style.IndentWidth);
16105   CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u);
16106   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
16107 
16108   CHECK_PARSE("BasedOnStyle: LLVM\n"
16109               "IndentWidth: 67",
16110               IndentWidth, 67u);
16111 
16112   CHECK_PARSE("---\n"
16113               "Language: JavaScript\n"
16114               "IndentWidth: 12\n"
16115               "---\n"
16116               "Language: Cpp\n"
16117               "IndentWidth: 34\n"
16118               "...\n",
16119               IndentWidth, 12u);
16120 
16121   Style.Language = FormatStyle::LK_Cpp;
16122   CHECK_PARSE("---\n"
16123               "Language: JavaScript\n"
16124               "IndentWidth: 12\n"
16125               "---\n"
16126               "Language: Cpp\n"
16127               "IndentWidth: 34\n"
16128               "...\n",
16129               IndentWidth, 34u);
16130   CHECK_PARSE("---\n"
16131               "IndentWidth: 78\n"
16132               "---\n"
16133               "Language: JavaScript\n"
16134               "IndentWidth: 56\n"
16135               "...\n",
16136               IndentWidth, 78u);
16137 
16138   Style.ColumnLimit = 123;
16139   Style.IndentWidth = 234;
16140   Style.BreakBeforeBraces = FormatStyle::BS_Linux;
16141   Style.TabWidth = 345;
16142   EXPECT_FALSE(parseConfiguration("---\n"
16143                                   "IndentWidth: 456\n"
16144                                   "BreakBeforeBraces: Allman\n"
16145                                   "---\n"
16146                                   "Language: JavaScript\n"
16147                                   "IndentWidth: 111\n"
16148                                   "TabWidth: 111\n"
16149                                   "---\n"
16150                                   "Language: Cpp\n"
16151                                   "BreakBeforeBraces: Stroustrup\n"
16152                                   "TabWidth: 789\n"
16153                                   "...\n",
16154                                   &Style));
16155   EXPECT_EQ(123u, Style.ColumnLimit);
16156   EXPECT_EQ(456u, Style.IndentWidth);
16157   EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces);
16158   EXPECT_EQ(789u, Style.TabWidth);
16159 
16160   EXPECT_EQ(parseConfiguration("---\n"
16161                                "Language: JavaScript\n"
16162                                "IndentWidth: 56\n"
16163                                "---\n"
16164                                "IndentWidth: 78\n"
16165                                "...\n",
16166                                &Style),
16167             ParseError::Error);
16168   EXPECT_EQ(parseConfiguration("---\n"
16169                                "Language: JavaScript\n"
16170                                "IndentWidth: 56\n"
16171                                "---\n"
16172                                "Language: JavaScript\n"
16173                                "IndentWidth: 78\n"
16174                                "...\n",
16175                                &Style),
16176             ParseError::Error);
16177 
16178   EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language);
16179 }
16180 
16181 #undef CHECK_PARSE
16182 
16183 TEST_F(FormatTest, UsesLanguageForBasedOnStyle) {
16184   FormatStyle Style = {};
16185   Style.Language = FormatStyle::LK_JavaScript;
16186   Style.BreakBeforeTernaryOperators = true;
16187   EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value());
16188   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
16189 
16190   Style.BreakBeforeTernaryOperators = true;
16191   EXPECT_EQ(0, parseConfiguration("---\n"
16192                                   "BasedOnStyle: Google\n"
16193                                   "---\n"
16194                                   "Language: JavaScript\n"
16195                                   "IndentWidth: 76\n"
16196                                   "...\n",
16197                                   &Style)
16198                    .value());
16199   EXPECT_FALSE(Style.BreakBeforeTernaryOperators);
16200   EXPECT_EQ(76u, Style.IndentWidth);
16201   EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language);
16202 }
16203 
16204 TEST_F(FormatTest, ConfigurationRoundTripTest) {
16205   FormatStyle Style = getLLVMStyle();
16206   std::string YAML = configurationAsText(Style);
16207   FormatStyle ParsedStyle = {};
16208   ParsedStyle.Language = FormatStyle::LK_Cpp;
16209   EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value());
16210   EXPECT_EQ(Style, ParsedStyle);
16211 }
16212 
16213 TEST_F(FormatTest, WorksFor8bitEncodings) {
16214   EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n"
16215             "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n"
16216             "\"\xe7\xe8\xec\xed\xfe\xfe \"\n"
16217             "\"\xef\xee\xf0\xf3...\"",
16218             format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 "
16219                    "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe "
16220                    "\xef\xee\xf0\xf3...\"",
16221                    getLLVMStyleWithColumns(12)));
16222 }
16223 
16224 TEST_F(FormatTest, HandlesUTF8BOM) {
16225   EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf"));
16226   EXPECT_EQ("\xef\xbb\xbf#include <iostream>",
16227             format("\xef\xbb\xbf#include <iostream>"));
16228   EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>",
16229             format("\xef\xbb\xbf\n#include <iostream>"));
16230 }
16231 
16232 // FIXME: Encode Cyrillic and CJK characters below to appease MS compilers.
16233 #if !defined(_MSC_VER)
16234 
16235 TEST_F(FormatTest, CountsUTF8CharactersProperly) {
16236   verifyFormat("\"Однажды в студёную зимнюю пору...\"",
16237                getLLVMStyleWithColumns(35));
16238   verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"",
16239                getLLVMStyleWithColumns(31));
16240   verifyFormat("// Однажды в студёную зимнюю пору...",
16241                getLLVMStyleWithColumns(36));
16242   verifyFormat("// 一 二 三 四 五 六 七 八 九 十", getLLVMStyleWithColumns(32));
16243   verifyFormat("/* Однажды в студёную зимнюю пору... */",
16244                getLLVMStyleWithColumns(39));
16245   verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */",
16246                getLLVMStyleWithColumns(35));
16247 }
16248 
16249 TEST_F(FormatTest, SplitsUTF8Strings) {
16250   // Non-printable characters' width is currently considered to be the length in
16251   // bytes in UTF8. The characters can be displayed in very different manner
16252   // (zero-width, single width with a substitution glyph, expanded to their code
16253   // (e.g. "<8d>"), so there's no single correct way to handle them.
16254   EXPECT_EQ("\"aaaaÄ\"\n"
16255             "\"\xc2\x8d\";",
16256             format("\"aaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
16257   EXPECT_EQ("\"aaaaaaaÄ\"\n"
16258             "\"\xc2\x8d\";",
16259             format("\"aaaaaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10)));
16260   EXPECT_EQ("\"Однажды, в \"\n"
16261             "\"студёную \"\n"
16262             "\"зимнюю \"\n"
16263             "\"пору,\"",
16264             format("\"Однажды, в студёную зимнюю пору,\"",
16265                    getLLVMStyleWithColumns(13)));
16266   EXPECT_EQ(
16267       "\"一 二 三 \"\n"
16268       "\"四 五六 \"\n"
16269       "\"七 八 九 \"\n"
16270       "\"十\"",
16271       format("\"一 二 三 四 五六 七 八 九 十\"", getLLVMStyleWithColumns(11)));
16272   EXPECT_EQ("\"一\t\"\n"
16273             "\"二 \t\"\n"
16274             "\"三 四 \"\n"
16275             "\"五\t\"\n"
16276             "\"六 \t\"\n"
16277             "\"七 \"\n"
16278             "\"八九十\tqq\"",
16279             format("\"一\t二 \t三 四 五\t六 \t七 八九十\tqq\"",
16280                    getLLVMStyleWithColumns(11)));
16281 
16282   // UTF8 character in an escape sequence.
16283   EXPECT_EQ("\"aaaaaa\"\n"
16284             "\"\\\xC2\x8D\"",
16285             format("\"aaaaaa\\\xC2\x8D\"", getLLVMStyleWithColumns(10)));
16286 }
16287 
16288 TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) {
16289   EXPECT_EQ("const char *sssss =\n"
16290             "    \"一二三四五六七八\\\n"
16291             " 九 十\";",
16292             format("const char *sssss = \"一二三四五六七八\\\n"
16293                    " 九 十\";",
16294                    getLLVMStyleWithColumns(30)));
16295 }
16296 
16297 TEST_F(FormatTest, SplitsUTF8LineComments) {
16298   EXPECT_EQ("// aaaaÄ\xc2\x8d",
16299             format("// aaaaÄ\xc2\x8d", getLLVMStyleWithColumns(10)));
16300   EXPECT_EQ("// Я из лесу\n"
16301             "// вышел; был\n"
16302             "// сильный\n"
16303             "// мороз.",
16304             format("// Я из лесу вышел; был сильный мороз.",
16305                    getLLVMStyleWithColumns(13)));
16306   EXPECT_EQ("// 一二三\n"
16307             "// 四五六七\n"
16308             "// 八  九\n"
16309             "// 十",
16310             format("// 一二三 四五六七 八  九 十", getLLVMStyleWithColumns(9)));
16311 }
16312 
16313 TEST_F(FormatTest, SplitsUTF8BlockComments) {
16314   EXPECT_EQ("/* Гляжу,\n"
16315             " * поднимается\n"
16316             " * медленно в\n"
16317             " * гору\n"
16318             " * Лошадка,\n"
16319             " * везущая\n"
16320             " * хворосту\n"
16321             " * воз. */",
16322             format("/* Гляжу, поднимается медленно в гору\n"
16323                    " * Лошадка, везущая хворосту воз. */",
16324                    getLLVMStyleWithColumns(13)));
16325   EXPECT_EQ(
16326       "/* 一二三\n"
16327       " * 四五六七\n"
16328       " * 八  九\n"
16329       " * 十  */",
16330       format("/* 一二三 四五六七 八  九 十  */", getLLVMStyleWithColumns(9)));
16331   EXPECT_EQ("/* �������� ��������\n"
16332             " * ��������\n"
16333             " * ������-�� */",
16334             format("/* �������� �������� �������� ������-�� */", getLLVMStyleWithColumns(12)));
16335 }
16336 
16337 #endif // _MSC_VER
16338 
16339 TEST_F(FormatTest, ConstructorInitializerIndentWidth) {
16340   FormatStyle Style = getLLVMStyle();
16341 
16342   Style.ConstructorInitializerIndentWidth = 4;
16343   verifyFormat(
16344       "SomeClass::Constructor()\n"
16345       "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
16346       "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
16347       Style);
16348 
16349   Style.ConstructorInitializerIndentWidth = 2;
16350   verifyFormat(
16351       "SomeClass::Constructor()\n"
16352       "  : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
16353       "    aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
16354       Style);
16355 
16356   Style.ConstructorInitializerIndentWidth = 0;
16357   verifyFormat(
16358       "SomeClass::Constructor()\n"
16359       ": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
16360       "  aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
16361       Style);
16362   Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak;
16363   verifyFormat(
16364       "SomeLongTemplateVariableName<\n"
16365       "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>",
16366       Style);
16367   verifyFormat("bool smaller = 1 < "
16368                "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
16369                "                       "
16370                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
16371                Style);
16372 
16373   Style.BreakConstructorInitializers = FormatStyle::BCIS_AfterColon;
16374   verifyFormat("SomeClass::Constructor() :\n"
16375                "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa),\n"
16376                "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa) {}",
16377                Style);
16378 }
16379 
16380 TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) {
16381   FormatStyle Style = getLLVMStyle();
16382   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeComma;
16383   Style.ConstructorInitializerIndentWidth = 4;
16384   verifyFormat("SomeClass::Constructor()\n"
16385                "    : a(a)\n"
16386                "    , b(b)\n"
16387                "    , c(c) {}",
16388                Style);
16389   verifyFormat("SomeClass::Constructor()\n"
16390                "    : a(a) {}",
16391                Style);
16392 
16393   Style.ColumnLimit = 0;
16394   verifyFormat("SomeClass::Constructor()\n"
16395                "    : a(a) {}",
16396                Style);
16397   verifyFormat("SomeClass::Constructor() noexcept\n"
16398                "    : a(a) {}",
16399                Style);
16400   verifyFormat("SomeClass::Constructor()\n"
16401                "    : a(a)\n"
16402                "    , b(b)\n"
16403                "    , c(c) {}",
16404                Style);
16405   verifyFormat("SomeClass::Constructor()\n"
16406                "    : a(a) {\n"
16407                "  foo();\n"
16408                "  bar();\n"
16409                "}",
16410                Style);
16411 
16412   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
16413   verifyFormat("SomeClass::Constructor()\n"
16414                "    : a(a)\n"
16415                "    , b(b)\n"
16416                "    , c(c) {\n}",
16417                Style);
16418   verifyFormat("SomeClass::Constructor()\n"
16419                "    : a(a) {\n}",
16420                Style);
16421 
16422   Style.ColumnLimit = 80;
16423   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All;
16424   Style.ConstructorInitializerIndentWidth = 2;
16425   verifyFormat("SomeClass::Constructor()\n"
16426                "  : a(a)\n"
16427                "  , b(b)\n"
16428                "  , c(c) {}",
16429                Style);
16430 
16431   Style.ConstructorInitializerIndentWidth = 0;
16432   verifyFormat("SomeClass::Constructor()\n"
16433                ": a(a)\n"
16434                ", b(b)\n"
16435                ", c(c) {}",
16436                Style);
16437 
16438   Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
16439   Style.ConstructorInitializerIndentWidth = 4;
16440   verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style);
16441   verifyFormat(
16442       "SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n",
16443       Style);
16444   verifyFormat(
16445       "SomeClass::Constructor()\n"
16446       "    : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}",
16447       Style);
16448   Style.ConstructorInitializerIndentWidth = 4;
16449   Style.ColumnLimit = 60;
16450   verifyFormat("SomeClass::Constructor()\n"
16451                "    : aaaaaaaa(aaaaaaaa)\n"
16452                "    , aaaaaaaa(aaaaaaaa)\n"
16453                "    , aaaaaaaa(aaaaaaaa) {}",
16454                Style);
16455 }
16456 
16457 TEST_F(FormatTest, Destructors) {
16458   verifyFormat("void F(int &i) { i.~int(); }");
16459   verifyFormat("void F(int &i) { i->~int(); }");
16460 }
16461 
16462 TEST_F(FormatTest, FormatsWithWebKitStyle) {
16463   FormatStyle Style = getWebKitStyle();
16464 
16465   // Don't indent in outer namespaces.
16466   verifyFormat("namespace outer {\n"
16467                "int i;\n"
16468                "namespace inner {\n"
16469                "    int i;\n"
16470                "} // namespace inner\n"
16471                "} // namespace outer\n"
16472                "namespace other_outer {\n"
16473                "int i;\n"
16474                "}",
16475                Style);
16476 
16477   // Don't indent case labels.
16478   verifyFormat("switch (variable) {\n"
16479                "case 1:\n"
16480                "case 2:\n"
16481                "    doSomething();\n"
16482                "    break;\n"
16483                "default:\n"
16484                "    ++variable;\n"
16485                "}",
16486                Style);
16487 
16488   // Wrap before binary operators.
16489   EXPECT_EQ("void f()\n"
16490             "{\n"
16491             "    if (aaaaaaaaaaaaaaaa\n"
16492             "        && bbbbbbbbbbbbbbbbbbbbbbbb\n"
16493             "        && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
16494             "        return;\n"
16495             "}",
16496             format("void f() {\n"
16497                    "if (aaaaaaaaaaaaaaaa\n"
16498                    "&& bbbbbbbbbbbbbbbbbbbbbbbb\n"
16499                    "&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n"
16500                    "return;\n"
16501                    "}",
16502                    Style));
16503 
16504   // Allow functions on a single line.
16505   verifyFormat("void f() { return; }", Style);
16506 
16507   // Allow empty blocks on a single line and insert a space in empty blocks.
16508   EXPECT_EQ("void f() { }", format("void f() {}", Style));
16509   EXPECT_EQ("while (true) { }", format("while (true) {}", Style));
16510   // However, don't merge non-empty short loops.
16511   EXPECT_EQ("while (true) {\n"
16512             "    continue;\n"
16513             "}",
16514             format("while (true) { continue; }", Style));
16515 
16516   // Constructor initializers are formatted one per line with the "," on the
16517   // new line.
16518   verifyFormat("Constructor()\n"
16519                "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
16520                "    , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n"
16521                "          aaaaaaaaaaaaaa)\n"
16522                "    , aaaaaaaaaaaaaaaaaaaaaaa()\n"
16523                "{\n"
16524                "}",
16525                Style);
16526   verifyFormat("SomeClass::Constructor()\n"
16527                "    : a(a)\n"
16528                "{\n"
16529                "}",
16530                Style);
16531   EXPECT_EQ("SomeClass::Constructor()\n"
16532             "    : a(a)\n"
16533             "{\n"
16534             "}",
16535             format("SomeClass::Constructor():a(a){}", Style));
16536   verifyFormat("SomeClass::Constructor()\n"
16537                "    : a(a)\n"
16538                "    , b(b)\n"
16539                "    , c(c)\n"
16540                "{\n"
16541                "}",
16542                Style);
16543   verifyFormat("SomeClass::Constructor()\n"
16544                "    : a(a)\n"
16545                "{\n"
16546                "    foo();\n"
16547                "    bar();\n"
16548                "}",
16549                Style);
16550 
16551   // Access specifiers should be aligned left.
16552   verifyFormat("class C {\n"
16553                "public:\n"
16554                "    int i;\n"
16555                "};",
16556                Style);
16557 
16558   // Do not align comments.
16559   verifyFormat("int a; // Do not\n"
16560                "double b; // align comments.",
16561                Style);
16562 
16563   // Do not align operands.
16564   EXPECT_EQ("ASSERT(aaaa\n"
16565             "    || bbbb);",
16566             format("ASSERT ( aaaa\n||bbbb);", Style));
16567 
16568   // Accept input's line breaks.
16569   EXPECT_EQ("if (aaaaaaaaaaaaaaa\n"
16570             "    || bbbbbbbbbbbbbbb) {\n"
16571             "    i++;\n"
16572             "}",
16573             format("if (aaaaaaaaaaaaaaa\n"
16574                    "|| bbbbbbbbbbbbbbb) { i++; }",
16575                    Style));
16576   EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n"
16577             "    i++;\n"
16578             "}",
16579             format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style));
16580 
16581   // Don't automatically break all macro definitions (llvm.org/PR17842).
16582   verifyFormat("#define aNumber 10", Style);
16583   // However, generally keep the line breaks that the user authored.
16584   EXPECT_EQ("#define aNumber \\\n"
16585             "    10",
16586             format("#define aNumber \\\n"
16587                    " 10",
16588                    Style));
16589 
16590   // Keep empty and one-element array literals on a single line.
16591   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n"
16592             "                                  copyItems:YES];",
16593             format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n"
16594                    "copyItems:YES];",
16595                    Style));
16596   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n"
16597             "                                  copyItems:YES];",
16598             format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n"
16599                    "             copyItems:YES];",
16600                    Style));
16601   // FIXME: This does not seem right, there should be more indentation before
16602   // the array literal's entries. Nested blocks have the same problem.
16603   EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
16604             "    @\"a\",\n"
16605             "    @\"a\"\n"
16606             "]\n"
16607             "                                  copyItems:YES];",
16608             format("NSArray* a = [[NSArray alloc] initWithArray:@[\n"
16609                    "     @\"a\",\n"
16610                    "     @\"a\"\n"
16611                    "     ]\n"
16612                    "       copyItems:YES];",
16613                    Style));
16614   EXPECT_EQ(
16615       "NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
16616       "                                  copyItems:YES];",
16617       format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n"
16618              "   copyItems:YES];",
16619              Style));
16620 
16621   verifyFormat("[self.a b:c c:d];", Style);
16622   EXPECT_EQ("[self.a b:c\n"
16623             "        c:d];",
16624             format("[self.a b:c\n"
16625                    "c:d];",
16626                    Style));
16627 }
16628 
16629 TEST_F(FormatTest, FormatsLambdas) {
16630   verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n");
16631   verifyFormat(
16632       "int c = [b]() mutable noexcept { return [&b] { return b++; }(); }();\n");
16633   verifyFormat("int c = [&] { [=] { return b++; }(); }();\n");
16634   verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n");
16635   verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n");
16636   verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n");
16637   verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n");
16638   verifyFormat("auto c = [a = [b = 42] {}] {};\n");
16639   verifyFormat("auto c = [a = &i + 10, b = [] {}] {};\n");
16640   verifyFormat("int x = f(*+[] {});");
16641   verifyFormat("void f() {\n"
16642                "  other(x.begin(), x.end(), [&](int, int) { return 1; });\n"
16643                "}\n");
16644   verifyFormat("void f() {\n"
16645                "  other(x.begin(), //\n"
16646                "        x.end(),   //\n"
16647                "        [&](int, int) { return 1; });\n"
16648                "}\n");
16649   verifyFormat("void f() {\n"
16650                "  other.other.other.other.other(\n"
16651                "      x.begin(), x.end(),\n"
16652                "      [something, rather](int, int, int, int, int, int, int) { "
16653                "return 1; });\n"
16654                "}\n");
16655   verifyFormat(
16656       "void f() {\n"
16657       "  other.other.other.other.other(\n"
16658       "      x.begin(), x.end(),\n"
16659       "      [something, rather](int, int, int, int, int, int, int) {\n"
16660       "        //\n"
16661       "      });\n"
16662       "}\n");
16663   verifyFormat("SomeFunction([]() { // A cool function...\n"
16664                "  return 43;\n"
16665                "});");
16666   EXPECT_EQ("SomeFunction([]() {\n"
16667             "#define A a\n"
16668             "  return 43;\n"
16669             "});",
16670             format("SomeFunction([](){\n"
16671                    "#define A a\n"
16672                    "return 43;\n"
16673                    "});"));
16674   verifyFormat("void f() {\n"
16675                "  SomeFunction([](decltype(x), A *a) {});\n"
16676                "  SomeFunction([](typeof(x), A *a) {});\n"
16677                "  SomeFunction([](_Atomic(x), A *a) {});\n"
16678                "  SomeFunction([](__underlying_type(x), A *a) {});\n"
16679                "}");
16680   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
16681                "    [](const aaaaaaaaaa &a) { return a; });");
16682   verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n"
16683                "  SomeOtherFunctioooooooooooooooooooooooooon();\n"
16684                "});");
16685   verifyFormat("Constructor()\n"
16686                "    : Field([] { // comment\n"
16687                "        int i;\n"
16688                "      }) {}");
16689   verifyFormat("auto my_lambda = [](const string &some_parameter) {\n"
16690                "  return some_parameter.size();\n"
16691                "};");
16692   verifyFormat("std::function<std::string(const std::string &)> my_lambda =\n"
16693                "    [](const string &s) { return s; };");
16694   verifyFormat("int i = aaaaaa ? 1 //\n"
16695                "               : [] {\n"
16696                "                   return 2; //\n"
16697                "                 }();");
16698   verifyFormat("llvm::errs() << \"number of twos is \"\n"
16699                "             << std::count_if(v.begin(), v.end(), [](int x) {\n"
16700                "                  return x == 2; // force break\n"
16701                "                });");
16702   verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
16703                "    [=](int iiiiiiiiiiii) {\n"
16704                "      return aaaaaaaaaaaaaaaaaaaaaaa !=\n"
16705                "             aaaaaaaaaaaaaaaaaaaaaaa;\n"
16706                "    });",
16707                getLLVMStyleWithColumns(60));
16708   verifyFormat("SomeFunction({[&] {\n"
16709                "                // comment\n"
16710                "              },\n"
16711                "              [&] {\n"
16712                "                // comment\n"
16713                "              }});");
16714   verifyFormat("SomeFunction({[&] {\n"
16715                "  // comment\n"
16716                "}});");
16717   verifyFormat(
16718       "virtual aaaaaaaaaaaaaaaa(\n"
16719       "    std::function<bool()> bbbbbbbbbbbb = [&]() { return true; },\n"
16720       "    aaaaa aaaaaaaaa);");
16721 
16722   // Lambdas with return types.
16723   verifyFormat("int c = []() -> int { return 2; }();\n");
16724   verifyFormat("int c = []() -> int * { return 2; }();\n");
16725   verifyFormat("int c = []() -> vector<int> { return {2}; }();\n");
16726   verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());");
16727   verifyGoogleFormat("auto a = [&b, c](D* d) -> D* {};");
16728   verifyGoogleFormat("auto a = [&b, c](D* d) -> pair<D*, D*> {};");
16729   verifyGoogleFormat("auto a = [&b, c](D* d) -> D& {};");
16730   verifyGoogleFormat("auto a = [&b, c](D* d) -> const D* {};");
16731   verifyFormat("[a, a]() -> a<1> {};");
16732   verifyFormat("[]() -> foo<5 + 2> { return {}; };");
16733   verifyFormat("[]() -> foo<5 - 2> { return {}; };");
16734   verifyFormat("[]() -> foo<5 / 2> { return {}; };");
16735   verifyFormat("[]() -> foo<5 * 2> { return {}; };");
16736   verifyFormat("[]() -> foo<5 % 2> { return {}; };");
16737   verifyFormat("[]() -> foo<5 << 2> { return {}; };");
16738   verifyFormat("[]() -> foo<!5> { return {}; };");
16739   verifyFormat("[]() -> foo<~5> { return {}; };");
16740   verifyFormat("[]() -> foo<5 | 2> { return {}; };");
16741   verifyFormat("[]() -> foo<5 || 2> { return {}; };");
16742   verifyFormat("[]() -> foo<5 & 2> { return {}; };");
16743   verifyFormat("[]() -> foo<5 && 2> { return {}; };");
16744   verifyFormat("[]() -> foo<5 == 2> { return {}; };");
16745   verifyFormat("[]() -> foo<5 != 2> { return {}; };");
16746   verifyFormat("[]() -> foo<5 >= 2> { return {}; };");
16747   verifyFormat("[]() -> foo<5 <= 2> { return {}; };");
16748   verifyFormat("[]() -> foo<5 < 2> { return {}; };");
16749   verifyFormat("[]() -> foo<2 ? 1 : 0> { return {}; };");
16750   verifyFormat("namespace bar {\n"
16751                "// broken:\n"
16752                "auto foo{[]() -> foo<5 + 2> { return {}; }};\n"
16753                "} // namespace bar");
16754   verifyFormat("namespace bar {\n"
16755                "// broken:\n"
16756                "auto foo{[]() -> foo<5 - 2> { return {}; }};\n"
16757                "} // namespace bar");
16758   verifyFormat("namespace bar {\n"
16759                "// broken:\n"
16760                "auto foo{[]() -> foo<5 / 2> { return {}; }};\n"
16761                "} // namespace bar");
16762   verifyFormat("namespace bar {\n"
16763                "// broken:\n"
16764                "auto foo{[]() -> foo<5 * 2> { return {}; }};\n"
16765                "} // namespace bar");
16766   verifyFormat("namespace bar {\n"
16767                "// broken:\n"
16768                "auto foo{[]() -> foo<5 % 2> { return {}; }};\n"
16769                "} // namespace bar");
16770   verifyFormat("namespace bar {\n"
16771                "// broken:\n"
16772                "auto foo{[]() -> foo<5 << 2> { return {}; }};\n"
16773                "} // namespace bar");
16774   verifyFormat("namespace bar {\n"
16775                "// broken:\n"
16776                "auto foo{[]() -> foo<!5> { return {}; }};\n"
16777                "} // namespace bar");
16778   verifyFormat("namespace bar {\n"
16779                "// broken:\n"
16780                "auto foo{[]() -> foo<~5> { return {}; }};\n"
16781                "} // namespace bar");
16782   verifyFormat("namespace bar {\n"
16783                "// broken:\n"
16784                "auto foo{[]() -> foo<5 | 2> { return {}; }};\n"
16785                "} // namespace bar");
16786   verifyFormat("namespace bar {\n"
16787                "// broken:\n"
16788                "auto foo{[]() -> foo<5 || 2> { return {}; }};\n"
16789                "} // namespace bar");
16790   verifyFormat("namespace bar {\n"
16791                "// broken:\n"
16792                "auto foo{[]() -> foo<5 & 2> { return {}; }};\n"
16793                "} // namespace bar");
16794   verifyFormat("namespace bar {\n"
16795                "// broken:\n"
16796                "auto foo{[]() -> foo<5 && 2> { return {}; }};\n"
16797                "} // namespace bar");
16798   verifyFormat("namespace bar {\n"
16799                "// broken:\n"
16800                "auto foo{[]() -> foo<5 == 2> { return {}; }};\n"
16801                "} // namespace bar");
16802   verifyFormat("namespace bar {\n"
16803                "// broken:\n"
16804                "auto foo{[]() -> foo<5 != 2> { return {}; }};\n"
16805                "} // namespace bar");
16806   verifyFormat("namespace bar {\n"
16807                "// broken:\n"
16808                "auto foo{[]() -> foo<5 >= 2> { return {}; }};\n"
16809                "} // namespace bar");
16810   verifyFormat("namespace bar {\n"
16811                "// broken:\n"
16812                "auto foo{[]() -> foo<5 <= 2> { return {}; }};\n"
16813                "} // namespace bar");
16814   verifyFormat("namespace bar {\n"
16815                "// broken:\n"
16816                "auto foo{[]() -> foo<5 < 2> { return {}; }};\n"
16817                "} // namespace bar");
16818   verifyFormat("namespace bar {\n"
16819                "// broken:\n"
16820                "auto foo{[]() -> foo<2 ? 1 : 0> { return {}; }};\n"
16821                "} // namespace bar");
16822   verifyFormat("[]() -> a<1> {};");
16823   verifyFormat("[]() -> a<1> { ; };");
16824   verifyFormat("[]() -> a<1> { ; }();");
16825   verifyFormat("[a, a]() -> a<true> {};");
16826   verifyFormat("[]() -> a<true> {};");
16827   verifyFormat("[]() -> a<true> { ; };");
16828   verifyFormat("[]() -> a<true> { ; }();");
16829   verifyFormat("[a, a]() -> a<false> {};");
16830   verifyFormat("[]() -> a<false> {};");
16831   verifyFormat("[]() -> a<false> { ; };");
16832   verifyFormat("[]() -> a<false> { ; }();");
16833   verifyFormat("auto foo{[]() -> foo<false> { ; }};");
16834   verifyFormat("namespace bar {\n"
16835                "auto foo{[]() -> foo<false> { ; }};\n"
16836                "} // namespace bar");
16837   verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n"
16838                "                   int j) -> int {\n"
16839                "  return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n"
16840                "};");
16841   verifyFormat(
16842       "aaaaaaaaaaaaaaaaaaaaaa(\n"
16843       "    [](aaaaaaaaaaaaaaaaaaaaaaaaaaa &aaa) -> aaaaaaaaaaaaaaaa {\n"
16844       "      return aaaaaaaaaaaaaaaaa;\n"
16845       "    });",
16846       getLLVMStyleWithColumns(70));
16847   verifyFormat("[]() //\n"
16848                "    -> int {\n"
16849                "  return 1; //\n"
16850                "};");
16851   verifyFormat("[]() -> Void<T...> {};");
16852   verifyFormat("[a, b]() -> Tuple<T...> { return {}; };");
16853 
16854   // Lambdas with explicit template argument lists.
16855   verifyFormat(
16856       "auto L = []<template <typename> class T, class U>(T<U> &&a) {};\n");
16857 
16858   // Multiple lambdas in the same parentheses change indentation rules. These
16859   // lambdas are forced to start on new lines.
16860   verifyFormat("SomeFunction(\n"
16861                "    []() {\n"
16862                "      //\n"
16863                "    },\n"
16864                "    []() {\n"
16865                "      //\n"
16866                "    });");
16867 
16868   // A lambda passed as arg0 is always pushed to the next line.
16869   verifyFormat("SomeFunction(\n"
16870                "    [this] {\n"
16871                "      //\n"
16872                "    },\n"
16873                "    1);\n");
16874 
16875   // A multi-line lambda passed as arg1 forces arg0 to be pushed out, just like
16876   // the arg0 case above.
16877   auto Style = getGoogleStyle();
16878   Style.BinPackArguments = false;
16879   verifyFormat("SomeFunction(\n"
16880                "    a,\n"
16881                "    [this] {\n"
16882                "      //\n"
16883                "    },\n"
16884                "    b);\n",
16885                Style);
16886   verifyFormat("SomeFunction(\n"
16887                "    a,\n"
16888                "    [this] {\n"
16889                "      //\n"
16890                "    },\n"
16891                "    b);\n");
16892 
16893   // A lambda with a very long line forces arg0 to be pushed out irrespective of
16894   // the BinPackArguments value (as long as the code is wide enough).
16895   verifyFormat(
16896       "something->SomeFunction(\n"
16897       "    a,\n"
16898       "    [this] {\n"
16899       "      "
16900       "D0000000000000000000000000000000000000000000000000000000000001();\n"
16901       "    },\n"
16902       "    b);\n");
16903 
16904   // A multi-line lambda is pulled up as long as the introducer fits on the
16905   // previous line and there are no further args.
16906   verifyFormat("function(1, [this, that] {\n"
16907                "  //\n"
16908                "});\n");
16909   verifyFormat("function([this, that] {\n"
16910                "  //\n"
16911                "});\n");
16912   // FIXME: this format is not ideal and we should consider forcing the first
16913   // arg onto its own line.
16914   verifyFormat("function(a, b, c, //\n"
16915                "         d, [this, that] {\n"
16916                "           //\n"
16917                "         });\n");
16918 
16919   // Multiple lambdas are treated correctly even when there is a short arg0.
16920   verifyFormat("SomeFunction(\n"
16921                "    1,\n"
16922                "    [this] {\n"
16923                "      //\n"
16924                "    },\n"
16925                "    [this] {\n"
16926                "      //\n"
16927                "    },\n"
16928                "    1);\n");
16929 
16930   // More complex introducers.
16931   verifyFormat("return [i, args...] {};");
16932 
16933   // Not lambdas.
16934   verifyFormat("constexpr char hello[]{\"hello\"};");
16935   verifyFormat("double &operator[](int i) { return 0; }\n"
16936                "int i;");
16937   verifyFormat("std::unique_ptr<int[]> foo() {}");
16938   verifyFormat("int i = a[a][a]->f();");
16939   verifyFormat("int i = (*b)[a]->f();");
16940 
16941   // Other corner cases.
16942   verifyFormat("void f() {\n"
16943                "  bar([]() {} // Did not respect SpacesBeforeTrailingComments\n"
16944                "  );\n"
16945                "}");
16946 
16947   // Lambdas created through weird macros.
16948   verifyFormat("void f() {\n"
16949                "  MACRO((const AA &a) { return 1; });\n"
16950                "  MACRO((AA &a) { return 1; });\n"
16951                "}");
16952 
16953   verifyFormat("if (blah_blah(whatever, whatever, [] {\n"
16954                "      doo_dah();\n"
16955                "      doo_dah();\n"
16956                "    })) {\n"
16957                "}");
16958   verifyFormat("if constexpr (blah_blah(whatever, whatever, [] {\n"
16959                "                doo_dah();\n"
16960                "                doo_dah();\n"
16961                "              })) {\n"
16962                "}");
16963   verifyFormat("if CONSTEXPR (blah_blah(whatever, whatever, [] {\n"
16964                "                doo_dah();\n"
16965                "                doo_dah();\n"
16966                "              })) {\n"
16967                "}");
16968   verifyFormat("auto lambda = []() {\n"
16969                "  int a = 2\n"
16970                "#if A\n"
16971                "          + 2\n"
16972                "#endif\n"
16973                "      ;\n"
16974                "};");
16975 
16976   // Lambdas with complex multiline introducers.
16977   verifyFormat(
16978       "aaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
16979       "    [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]()\n"
16980       "        -> ::std::unordered_set<\n"
16981       "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n"
16982       "      //\n"
16983       "    });");
16984 
16985   FormatStyle DoNotMerge = getLLVMStyle();
16986   DoNotMerge.AllowShortLambdasOnASingleLine = FormatStyle::SLS_None;
16987   verifyFormat("auto c = []() {\n"
16988                "  return b;\n"
16989                "};",
16990                "auto c = []() { return b; };", DoNotMerge);
16991   verifyFormat("auto c = []() {\n"
16992                "};",
16993                " auto c = []() {};", DoNotMerge);
16994 
16995   FormatStyle MergeEmptyOnly = getLLVMStyle();
16996   MergeEmptyOnly.AllowShortLambdasOnASingleLine = FormatStyle::SLS_Empty;
16997   verifyFormat("auto c = []() {\n"
16998                "  return b;\n"
16999                "};",
17000                "auto c = []() {\n"
17001                "  return b;\n"
17002                " };",
17003                MergeEmptyOnly);
17004   verifyFormat("auto c = []() {};",
17005                "auto c = []() {\n"
17006                "};",
17007                MergeEmptyOnly);
17008 
17009   FormatStyle MergeInline = getLLVMStyle();
17010   MergeInline.AllowShortLambdasOnASingleLine = FormatStyle::SLS_Inline;
17011   verifyFormat("auto c = []() {\n"
17012                "  return b;\n"
17013                "};",
17014                "auto c = []() { return b; };", MergeInline);
17015   verifyFormat("function([]() { return b; })", "function([]() { return b; })",
17016                MergeInline);
17017   verifyFormat("function([]() { return b; }, a)",
17018                "function([]() { return b; }, a)", MergeInline);
17019   verifyFormat("function(a, []() { return b; })",
17020                "function(a, []() { return b; })", MergeInline);
17021 
17022   // Check option "BraceWrapping.BeforeLambdaBody" and different state of
17023   // AllowShortLambdasOnASingleLine
17024   FormatStyle LLVMWithBeforeLambdaBody = getLLVMStyle();
17025   LLVMWithBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
17026   LLVMWithBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
17027   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
17028       FormatStyle::ShortLambdaStyle::SLS_None;
17029   verifyFormat("FctWithOneNestedLambdaInline_SLS_None(\n"
17030                "    []()\n"
17031                "    {\n"
17032                "      return 17;\n"
17033                "    });",
17034                LLVMWithBeforeLambdaBody);
17035   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_None(\n"
17036                "    []()\n"
17037                "    {\n"
17038                "    });",
17039                LLVMWithBeforeLambdaBody);
17040   verifyFormat("auto fct_SLS_None = []()\n"
17041                "{\n"
17042                "  return 17;\n"
17043                "};",
17044                LLVMWithBeforeLambdaBody);
17045   verifyFormat("TwoNestedLambdas_SLS_None(\n"
17046                "    []()\n"
17047                "    {\n"
17048                "      return Call(\n"
17049                "          []()\n"
17050                "          {\n"
17051                "            return 17;\n"
17052                "          });\n"
17053                "    });",
17054                LLVMWithBeforeLambdaBody);
17055   verifyFormat("void Fct()\n"
17056                "{\n"
17057                "  return {[]()\n"
17058                "          {\n"
17059                "            return 17;\n"
17060                "          }};\n"
17061                "}",
17062                LLVMWithBeforeLambdaBody);
17063 
17064   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
17065       FormatStyle::ShortLambdaStyle::SLS_Empty;
17066   verifyFormat("FctWithOneNestedLambdaInline_SLS_Empty(\n"
17067                "    []()\n"
17068                "    {\n"
17069                "      return 17;\n"
17070                "    });",
17071                LLVMWithBeforeLambdaBody);
17072   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_Empty([]() {});",
17073                LLVMWithBeforeLambdaBody);
17074   verifyFormat("FctWithOneNestedLambdaEmptyInsideAVeryVeryVeryVeryVeryVeryVeryL"
17075                "ongFunctionName_SLS_Empty(\n"
17076                "    []() {});",
17077                LLVMWithBeforeLambdaBody);
17078   verifyFormat("FctWithMultipleParams_SLS_Empty(A, B,\n"
17079                "                                []()\n"
17080                "                                {\n"
17081                "                                  return 17;\n"
17082                "                                });",
17083                LLVMWithBeforeLambdaBody);
17084   verifyFormat("auto fct_SLS_Empty = []()\n"
17085                "{\n"
17086                "  return 17;\n"
17087                "};",
17088                LLVMWithBeforeLambdaBody);
17089   verifyFormat("TwoNestedLambdas_SLS_Empty(\n"
17090                "    []()\n"
17091                "    {\n"
17092                "      return Call([]() {});\n"
17093                "    });",
17094                LLVMWithBeforeLambdaBody);
17095   verifyFormat("TwoNestedLambdas_SLS_Empty(A,\n"
17096                "                           []()\n"
17097                "                           {\n"
17098                "                             return Call([]() {});\n"
17099                "                           });",
17100                LLVMWithBeforeLambdaBody);
17101   verifyFormat(
17102       "FctWithLongLineInLambda_SLS_Empty(\n"
17103       "    []()\n"
17104       "    {\n"
17105       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
17106       "                               AndShouldNotBeConsiderAsInline,\n"
17107       "                               LambdaBodyMustBeBreak);\n"
17108       "    });",
17109       LLVMWithBeforeLambdaBody);
17110 
17111   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
17112       FormatStyle::ShortLambdaStyle::SLS_Inline;
17113   verifyFormat("FctWithOneNestedLambdaInline_SLS_Inline([]() { return 17; });",
17114                LLVMWithBeforeLambdaBody);
17115   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_Inline([]() {});",
17116                LLVMWithBeforeLambdaBody);
17117   verifyFormat("auto fct_SLS_Inline = []()\n"
17118                "{\n"
17119                "  return 17;\n"
17120                "};",
17121                LLVMWithBeforeLambdaBody);
17122   verifyFormat("TwoNestedLambdas_SLS_Inline([]() { return Call([]() { return "
17123                "17; }); });",
17124                LLVMWithBeforeLambdaBody);
17125   verifyFormat(
17126       "FctWithLongLineInLambda_SLS_Inline(\n"
17127       "    []()\n"
17128       "    {\n"
17129       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
17130       "                               AndShouldNotBeConsiderAsInline,\n"
17131       "                               LambdaBodyMustBeBreak);\n"
17132       "    });",
17133       LLVMWithBeforeLambdaBody);
17134   verifyFormat("FctWithMultipleParams_SLS_Inline("
17135                "VeryLongParameterThatShouldAskToBeOnMultiLine,\n"
17136                "                                 []() { return 17; });",
17137                LLVMWithBeforeLambdaBody);
17138   verifyFormat(
17139       "FctWithMultipleParams_SLS_Inline(FirstParam, []() { return 17; });",
17140       LLVMWithBeforeLambdaBody);
17141 
17142   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
17143       FormatStyle::ShortLambdaStyle::SLS_All;
17144   verifyFormat("FctWithOneNestedLambdaInline_SLS_All([]() { return 17; });",
17145                LLVMWithBeforeLambdaBody);
17146   verifyFormat("FctWithOneNestedLambdaEmpty_SLS_All([]() {});",
17147                LLVMWithBeforeLambdaBody);
17148   verifyFormat("auto fct_SLS_All = []() { return 17; };",
17149                LLVMWithBeforeLambdaBody);
17150   verifyFormat("FctWithOneParam_SLS_All(\n"
17151                "    []()\n"
17152                "    {\n"
17153                "      // A cool function...\n"
17154                "      return 43;\n"
17155                "    });",
17156                LLVMWithBeforeLambdaBody);
17157   verifyFormat("FctWithMultipleParams_SLS_All("
17158                "VeryLongParameterThatShouldAskToBeOnMultiLine,\n"
17159                "                              []() { return 17; });",
17160                LLVMWithBeforeLambdaBody);
17161   verifyFormat("FctWithMultipleParams_SLS_All(A, []() { return 17; });",
17162                LLVMWithBeforeLambdaBody);
17163   verifyFormat("FctWithMultipleParams_SLS_All(A, B, []() { return 17; });",
17164                LLVMWithBeforeLambdaBody);
17165   verifyFormat(
17166       "FctWithLongLineInLambda_SLS_All(\n"
17167       "    []()\n"
17168       "    {\n"
17169       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
17170       "                               AndShouldNotBeConsiderAsInline,\n"
17171       "                               LambdaBodyMustBeBreak);\n"
17172       "    });",
17173       LLVMWithBeforeLambdaBody);
17174   verifyFormat(
17175       "auto fct_SLS_All = []()\n"
17176       "{\n"
17177       "  return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
17178       "                           AndShouldNotBeConsiderAsInline,\n"
17179       "                           LambdaBodyMustBeBreak);\n"
17180       "};",
17181       LLVMWithBeforeLambdaBody);
17182   LLVMWithBeforeLambdaBody.BinPackParameters = false;
17183   verifyFormat("FctAllOnSameLine_SLS_All([]() { return S; }, Fst, Second);",
17184                LLVMWithBeforeLambdaBody);
17185   verifyFormat(
17186       "FctWithLongLineInLambda_SLS_All([]() { return SomeValueNotSoLong; },\n"
17187       "                                FirstParam,\n"
17188       "                                SecondParam,\n"
17189       "                                ThirdParam,\n"
17190       "                                FourthParam);",
17191       LLVMWithBeforeLambdaBody);
17192   verifyFormat("FctWithLongLineInLambda_SLS_All(\n"
17193                "    []() { return "
17194                "SomeValueVeryVeryVeryVeryVeryVeryVeryVeryVeryLong; },\n"
17195                "    FirstParam,\n"
17196                "    SecondParam,\n"
17197                "    ThirdParam,\n"
17198                "    FourthParam);",
17199                LLVMWithBeforeLambdaBody);
17200   verifyFormat(
17201       "FctWithLongLineInLambda_SLS_All(FirstParam,\n"
17202       "                                SecondParam,\n"
17203       "                                ThirdParam,\n"
17204       "                                FourthParam,\n"
17205       "                                []() { return SomeValueNotSoLong; });",
17206       LLVMWithBeforeLambdaBody);
17207   verifyFormat("FctWithLongLineInLambda_SLS_All(\n"
17208                "    []()\n"
17209                "    {\n"
17210                "      return "
17211                "HereAVeryLongLineThatWillBeFormattedOnMultipleLineAndShouldNotB"
17212                "eConsiderAsInline;\n"
17213                "    });",
17214                LLVMWithBeforeLambdaBody);
17215   verifyFormat(
17216       "FctWithLongLineInLambda_SLS_All(\n"
17217       "    []()\n"
17218       "    {\n"
17219       "      return HereAVeryLongLine(ThatWillBeFormatted, OnMultipleLine,\n"
17220       "                               AndShouldNotBeConsiderAsInline,\n"
17221       "                               LambdaBodyMustBeBreak);\n"
17222       "    });",
17223       LLVMWithBeforeLambdaBody);
17224   verifyFormat("FctWithTwoParams_SLS_All(\n"
17225                "    []()\n"
17226                "    {\n"
17227                "      // A cool function...\n"
17228                "      return 43;\n"
17229                "    },\n"
17230                "    87);",
17231                LLVMWithBeforeLambdaBody);
17232   verifyFormat("FctWithTwoParams_SLS_All([]() { return 43; }, 87);",
17233                LLVMWithBeforeLambdaBody);
17234   verifyFormat("FctWithOneNestedLambdas_SLS_All([]() { return 17; });",
17235                LLVMWithBeforeLambdaBody);
17236   verifyFormat(
17237       "TwoNestedLambdas_SLS_All([]() { return Call([]() { return 17; }); });",
17238       LLVMWithBeforeLambdaBody);
17239   verifyFormat("TwoNestedLambdas_SLS_All([]() { return Call([]() { return 17; "
17240                "}); }, x);",
17241                LLVMWithBeforeLambdaBody);
17242   verifyFormat("TwoNestedLambdas_SLS_All(\n"
17243                "    []()\n"
17244                "    {\n"
17245                "      // A cool function...\n"
17246                "      return Call([]() { return 17; });\n"
17247                "    });",
17248                LLVMWithBeforeLambdaBody);
17249   verifyFormat("TwoNestedLambdas_SLS_All(\n"
17250                "    []()\n"
17251                "    {\n"
17252                "      return Call(\n"
17253                "          []()\n"
17254                "          {\n"
17255                "            // A cool function...\n"
17256                "            return 17;\n"
17257                "          });\n"
17258                "    });",
17259                LLVMWithBeforeLambdaBody);
17260 }
17261 
17262 TEST_F(FormatTest, LambdaWithLineComments) {
17263   FormatStyle LLVMWithBeforeLambdaBody = getLLVMStyle();
17264   LLVMWithBeforeLambdaBody.BreakBeforeBraces = FormatStyle::BS_Custom;
17265   LLVMWithBeforeLambdaBody.BraceWrapping.BeforeLambdaBody = true;
17266   LLVMWithBeforeLambdaBody.AllowShortLambdasOnASingleLine =
17267       FormatStyle::ShortLambdaStyle::SLS_All;
17268 
17269   verifyFormat("auto k = []() { return; }", LLVMWithBeforeLambdaBody);
17270   verifyFormat("auto k = []() // comment\n"
17271                "{ return; }",
17272                LLVMWithBeforeLambdaBody);
17273   verifyFormat("auto k = []() /* comment */ { return; }",
17274                LLVMWithBeforeLambdaBody);
17275   verifyFormat("auto k = []() /* comment */ /* comment */ { return; }",
17276                LLVMWithBeforeLambdaBody);
17277   verifyFormat("auto k = []() // X\n"
17278                "{ return; }",
17279                LLVMWithBeforeLambdaBody);
17280   verifyFormat(
17281       "auto k = []() // XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\n"
17282       "{ return; }",
17283       LLVMWithBeforeLambdaBody);
17284 }
17285 
17286 TEST_F(FormatTest, EmptyLinesInLambdas) {
17287   verifyFormat("auto lambda = []() {\n"
17288                "  x(); //\n"
17289                "};",
17290                "auto lambda = []() {\n"
17291                "\n"
17292                "  x(); //\n"
17293                "\n"
17294                "};");
17295 }
17296 
17297 TEST_F(FormatTest, FormatsBlocks) {
17298   FormatStyle ShortBlocks = getLLVMStyle();
17299   ShortBlocks.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
17300   verifyFormat("int (^Block)(int, int);", ShortBlocks);
17301   verifyFormat("int (^Block1)(int, int) = ^(int i, int j)", ShortBlocks);
17302   verifyFormat("void (^block)(int) = ^(id test) { int i; };", ShortBlocks);
17303   verifyFormat("void (^block)(int) = ^(int test) { int i; };", ShortBlocks);
17304   verifyFormat("void (^block)(int) = ^id(int test) { int i; };", ShortBlocks);
17305   verifyFormat("void (^block)(int) = ^int(int test) { int i; };", ShortBlocks);
17306 
17307   verifyFormat("foo(^{ bar(); });", ShortBlocks);
17308   verifyFormat("foo(a, ^{ bar(); });", ShortBlocks);
17309   verifyFormat("{ void (^block)(Object *x); }", ShortBlocks);
17310 
17311   verifyFormat("[operation setCompletionBlock:^{\n"
17312                "  [self onOperationDone];\n"
17313                "}];");
17314   verifyFormat("int i = {[operation setCompletionBlock:^{\n"
17315                "  [self onOperationDone];\n"
17316                "}]};");
17317   verifyFormat("[operation setCompletionBlock:^(int *i) {\n"
17318                "  f();\n"
17319                "}];");
17320   verifyFormat("int a = [operation block:^int(int *i) {\n"
17321                "  return 1;\n"
17322                "}];");
17323   verifyFormat("[myObject doSomethingWith:arg1\n"
17324                "                      aaa:^int(int *a) {\n"
17325                "                        return 1;\n"
17326                "                      }\n"
17327                "                      bbb:f(a * bbbbbbbb)];");
17328 
17329   verifyFormat("[operation setCompletionBlock:^{\n"
17330                "  [self.delegate newDataAvailable];\n"
17331                "}];",
17332                getLLVMStyleWithColumns(60));
17333   verifyFormat("dispatch_async(_fileIOQueue, ^{\n"
17334                "  NSString *path = [self sessionFilePath];\n"
17335                "  if (path) {\n"
17336                "    // ...\n"
17337                "  }\n"
17338                "});");
17339   verifyFormat("[[SessionService sharedService]\n"
17340                "    loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
17341                "      if (window) {\n"
17342                "        [self windowDidLoad:window];\n"
17343                "      } else {\n"
17344                "        [self errorLoadingWindow];\n"
17345                "      }\n"
17346                "    }];");
17347   verifyFormat("void (^largeBlock)(void) = ^{\n"
17348                "  // ...\n"
17349                "};\n",
17350                getLLVMStyleWithColumns(40));
17351   verifyFormat("[[SessionService sharedService]\n"
17352                "    loadWindowWithCompletionBlock: //\n"
17353                "        ^(SessionWindow *window) {\n"
17354                "          if (window) {\n"
17355                "            [self windowDidLoad:window];\n"
17356                "          } else {\n"
17357                "            [self errorLoadingWindow];\n"
17358                "          }\n"
17359                "        }];",
17360                getLLVMStyleWithColumns(60));
17361   verifyFormat("[myObject doSomethingWith:arg1\n"
17362                "    firstBlock:^(Foo *a) {\n"
17363                "      // ...\n"
17364                "      int i;\n"
17365                "    }\n"
17366                "    secondBlock:^(Bar *b) {\n"
17367                "      // ...\n"
17368                "      int i;\n"
17369                "    }\n"
17370                "    thirdBlock:^Foo(Bar *b) {\n"
17371                "      // ...\n"
17372                "      int i;\n"
17373                "    }];");
17374   verifyFormat("[myObject doSomethingWith:arg1\n"
17375                "               firstBlock:-1\n"
17376                "              secondBlock:^(Bar *b) {\n"
17377                "                // ...\n"
17378                "                int i;\n"
17379                "              }];");
17380 
17381   verifyFormat("f(^{\n"
17382                "  @autoreleasepool {\n"
17383                "    if (a) {\n"
17384                "      g();\n"
17385                "    }\n"
17386                "  }\n"
17387                "});");
17388   verifyFormat("Block b = ^int *(A *a, B *b) {}");
17389   verifyFormat("BOOL (^aaa)(void) = ^BOOL {\n"
17390                "};");
17391 
17392   FormatStyle FourIndent = getLLVMStyle();
17393   FourIndent.ObjCBlockIndentWidth = 4;
17394   verifyFormat("[operation setCompletionBlock:^{\n"
17395                "    [self onOperationDone];\n"
17396                "}];",
17397                FourIndent);
17398 }
17399 
17400 TEST_F(FormatTest, FormatsBlocksWithZeroColumnWidth) {
17401   FormatStyle ZeroColumn = getLLVMStyle();
17402   ZeroColumn.ColumnLimit = 0;
17403 
17404   verifyFormat("[[SessionService sharedService] "
17405                "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
17406                "  if (window) {\n"
17407                "    [self windowDidLoad:window];\n"
17408                "  } else {\n"
17409                "    [self errorLoadingWindow];\n"
17410                "  }\n"
17411                "}];",
17412                ZeroColumn);
17413   EXPECT_EQ("[[SessionService sharedService]\n"
17414             "    loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
17415             "      if (window) {\n"
17416             "        [self windowDidLoad:window];\n"
17417             "      } else {\n"
17418             "        [self errorLoadingWindow];\n"
17419             "      }\n"
17420             "    }];",
17421             format("[[SessionService sharedService]\n"
17422                    "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n"
17423                    "                if (window) {\n"
17424                    "    [self windowDidLoad:window];\n"
17425                    "  } else {\n"
17426                    "    [self errorLoadingWindow];\n"
17427                    "  }\n"
17428                    "}];",
17429                    ZeroColumn));
17430   verifyFormat("[myObject doSomethingWith:arg1\n"
17431                "    firstBlock:^(Foo *a) {\n"
17432                "      // ...\n"
17433                "      int i;\n"
17434                "    }\n"
17435                "    secondBlock:^(Bar *b) {\n"
17436                "      // ...\n"
17437                "      int i;\n"
17438                "    }\n"
17439                "    thirdBlock:^Foo(Bar *b) {\n"
17440                "      // ...\n"
17441                "      int i;\n"
17442                "    }];",
17443                ZeroColumn);
17444   verifyFormat("f(^{\n"
17445                "  @autoreleasepool {\n"
17446                "    if (a) {\n"
17447                "      g();\n"
17448                "    }\n"
17449                "  }\n"
17450                "});",
17451                ZeroColumn);
17452   verifyFormat("void (^largeBlock)(void) = ^{\n"
17453                "  // ...\n"
17454                "};",
17455                ZeroColumn);
17456 
17457   ZeroColumn.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Always;
17458   EXPECT_EQ("void (^largeBlock)(void) = ^{ int i; };",
17459             format("void   (^largeBlock)(void) = ^{ int   i; };", ZeroColumn));
17460   ZeroColumn.AllowShortBlocksOnASingleLine = FormatStyle::SBS_Never;
17461   EXPECT_EQ("void (^largeBlock)(void) = ^{\n"
17462             "  int i;\n"
17463             "};",
17464             format("void   (^largeBlock)(void) = ^{ int   i; };", ZeroColumn));
17465 }
17466 
17467 TEST_F(FormatTest, SupportsCRLF) {
17468   EXPECT_EQ("int a;\r\n"
17469             "int b;\r\n"
17470             "int c;\r\n",
17471             format("int a;\r\n"
17472                    "  int b;\r\n"
17473                    "    int c;\r\n",
17474                    getLLVMStyle()));
17475   EXPECT_EQ("int a;\r\n"
17476             "int b;\r\n"
17477             "int c;\r\n",
17478             format("int a;\r\n"
17479                    "  int b;\n"
17480                    "    int c;\r\n",
17481                    getLLVMStyle()));
17482   EXPECT_EQ("int a;\n"
17483             "int b;\n"
17484             "int c;\n",
17485             format("int a;\r\n"
17486                    "  int b;\n"
17487                    "    int c;\n",
17488                    getLLVMStyle()));
17489   EXPECT_EQ("\"aaaaaaa \"\r\n"
17490             "\"bbbbbbb\";\r\n",
17491             format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10)));
17492   EXPECT_EQ("#define A \\\r\n"
17493             "  b;      \\\r\n"
17494             "  c;      \\\r\n"
17495             "  d;\r\n",
17496             format("#define A \\\r\n"
17497                    "  b; \\\r\n"
17498                    "  c; d; \r\n",
17499                    getGoogleStyle()));
17500 
17501   EXPECT_EQ("/*\r\n"
17502             "multi line block comments\r\n"
17503             "should not introduce\r\n"
17504             "an extra carriage return\r\n"
17505             "*/\r\n",
17506             format("/*\r\n"
17507                    "multi line block comments\r\n"
17508                    "should not introduce\r\n"
17509                    "an extra carriage return\r\n"
17510                    "*/\r\n"));
17511   EXPECT_EQ("/*\r\n"
17512             "\r\n"
17513             "*/",
17514             format("/*\r\n"
17515                    "    \r\r\r\n"
17516                    "*/"));
17517 
17518   FormatStyle style = getLLVMStyle();
17519 
17520   style.DeriveLineEnding = true;
17521   style.UseCRLF = false;
17522   EXPECT_EQ("union FooBarBazQux {\n"
17523             "  int foo;\n"
17524             "  int bar;\n"
17525             "  int baz;\n"
17526             "};",
17527             format("union FooBarBazQux {\r\n"
17528                    "  int foo;\n"
17529                    "  int bar;\r\n"
17530                    "  int baz;\n"
17531                    "};",
17532                    style));
17533   style.UseCRLF = true;
17534   EXPECT_EQ("union FooBarBazQux {\r\n"
17535             "  int foo;\r\n"
17536             "  int bar;\r\n"
17537             "  int baz;\r\n"
17538             "};",
17539             format("union FooBarBazQux {\r\n"
17540                    "  int foo;\n"
17541                    "  int bar;\r\n"
17542                    "  int baz;\n"
17543                    "};",
17544                    style));
17545 
17546   style.DeriveLineEnding = false;
17547   style.UseCRLF = false;
17548   EXPECT_EQ("union FooBarBazQux {\n"
17549             "  int foo;\n"
17550             "  int bar;\n"
17551             "  int baz;\n"
17552             "  int qux;\n"
17553             "};",
17554             format("union FooBarBazQux {\r\n"
17555                    "  int foo;\n"
17556                    "  int bar;\r\n"
17557                    "  int baz;\n"
17558                    "  int qux;\r\n"
17559                    "};",
17560                    style));
17561   style.UseCRLF = true;
17562   EXPECT_EQ("union FooBarBazQux {\r\n"
17563             "  int foo;\r\n"
17564             "  int bar;\r\n"
17565             "  int baz;\r\n"
17566             "  int qux;\r\n"
17567             "};",
17568             format("union FooBarBazQux {\r\n"
17569                    "  int foo;\n"
17570                    "  int bar;\r\n"
17571                    "  int baz;\n"
17572                    "  int qux;\n"
17573                    "};",
17574                    style));
17575 
17576   style.DeriveLineEnding = true;
17577   style.UseCRLF = false;
17578   EXPECT_EQ("union FooBarBazQux {\r\n"
17579             "  int foo;\r\n"
17580             "  int bar;\r\n"
17581             "  int baz;\r\n"
17582             "  int qux;\r\n"
17583             "};",
17584             format("union FooBarBazQux {\r\n"
17585                    "  int foo;\n"
17586                    "  int bar;\r\n"
17587                    "  int baz;\n"
17588                    "  int qux;\r\n"
17589                    "};",
17590                    style));
17591   style.UseCRLF = true;
17592   EXPECT_EQ("union FooBarBazQux {\n"
17593             "  int foo;\n"
17594             "  int bar;\n"
17595             "  int baz;\n"
17596             "  int qux;\n"
17597             "};",
17598             format("union FooBarBazQux {\r\n"
17599                    "  int foo;\n"
17600                    "  int bar;\r\n"
17601                    "  int baz;\n"
17602                    "  int qux;\n"
17603                    "};",
17604                    style));
17605 }
17606 
17607 TEST_F(FormatTest, MunchSemicolonAfterBlocks) {
17608   verifyFormat("MY_CLASS(C) {\n"
17609                "  int i;\n"
17610                "  int j;\n"
17611                "};");
17612 }
17613 
17614 TEST_F(FormatTest, ConfigurableContinuationIndentWidth) {
17615   FormatStyle TwoIndent = getLLVMStyleWithColumns(15);
17616   TwoIndent.ContinuationIndentWidth = 2;
17617 
17618   EXPECT_EQ("int i =\n"
17619             "  longFunction(\n"
17620             "    arg);",
17621             format("int i = longFunction(arg);", TwoIndent));
17622 
17623   FormatStyle SixIndent = getLLVMStyleWithColumns(20);
17624   SixIndent.ContinuationIndentWidth = 6;
17625 
17626   EXPECT_EQ("int i =\n"
17627             "      longFunction(\n"
17628             "            arg);",
17629             format("int i = longFunction(arg);", SixIndent));
17630 }
17631 
17632 TEST_F(FormatTest, WrappedClosingParenthesisIndent) {
17633   FormatStyle Style = getLLVMStyle();
17634   verifyFormat("int Foo::getter(\n"
17635                "    //\n"
17636                ") const {\n"
17637                "  return foo;\n"
17638                "}",
17639                Style);
17640   verifyFormat("void Foo::setter(\n"
17641                "    //\n"
17642                ") {\n"
17643                "  foo = 1;\n"
17644                "}",
17645                Style);
17646 }
17647 
17648 TEST_F(FormatTest, SpacesInAngles) {
17649   FormatStyle Spaces = getLLVMStyle();
17650   Spaces.SpacesInAngles = true;
17651 
17652   verifyFormat("static_cast< int >(arg);", Spaces);
17653   verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces);
17654   verifyFormat("f< int, float >();", Spaces);
17655   verifyFormat("template <> g() {}", Spaces);
17656   verifyFormat("template < std::vector< int > > f() {}", Spaces);
17657   verifyFormat("std::function< void(int, int) > fct;", Spaces);
17658   verifyFormat("void inFunction() { std::function< void(int, int) > fct; }",
17659                Spaces);
17660 
17661   Spaces.Standard = FormatStyle::LS_Cpp03;
17662   Spaces.SpacesInAngles = true;
17663   verifyFormat("A< A< int > >();", Spaces);
17664 
17665   Spaces.SpacesInAngles = false;
17666   verifyFormat("A<A<int> >();", Spaces);
17667 
17668   Spaces.Standard = FormatStyle::LS_Cpp11;
17669   Spaces.SpacesInAngles = true;
17670   verifyFormat("A< A< int > >();", Spaces);
17671 
17672   Spaces.SpacesInAngles = false;
17673   verifyFormat("A<A<int>>();", Spaces);
17674 }
17675 
17676 TEST_F(FormatTest, SpaceAfterTemplateKeyword) {
17677   FormatStyle Style = getLLVMStyle();
17678   Style.SpaceAfterTemplateKeyword = false;
17679   verifyFormat("template<int> void foo();", Style);
17680 }
17681 
17682 TEST_F(FormatTest, TripleAngleBrackets) {
17683   verifyFormat("f<<<1, 1>>>();");
17684   verifyFormat("f<<<1, 1, 1, s>>>();");
17685   verifyFormat("f<<<a, b, c, d>>>();");
17686   EXPECT_EQ("f<<<1, 1>>>();", format("f <<< 1, 1 >>> ();"));
17687   verifyFormat("f<param><<<1, 1>>>();");
17688   verifyFormat("f<1><<<1, 1>>>();");
17689   EXPECT_EQ("f<param><<<1, 1>>>();", format("f< param > <<< 1, 1 >>> ();"));
17690   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
17691                "aaaaaaaaaaa<<<\n    1, 1>>>();");
17692   verifyFormat("aaaaaaaaaaaaaaa<aaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaaaaa>\n"
17693                "    <<<aaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaaaaaaaaa>>>();");
17694 }
17695 
17696 TEST_F(FormatTest, MergeLessLessAtEnd) {
17697   verifyFormat("<<");
17698   EXPECT_EQ("< < <", format("\\\n<<<"));
17699   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
17700                "aaallvm::outs() <<");
17701   verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
17702                "aaaallvm::outs()\n    <<");
17703 }
17704 
17705 TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) {
17706   std::string code = "#if A\n"
17707                      "#if B\n"
17708                      "a.\n"
17709                      "#endif\n"
17710                      "    a = 1;\n"
17711                      "#else\n"
17712                      "#endif\n"
17713                      "#if C\n"
17714                      "#else\n"
17715                      "#endif\n";
17716   EXPECT_EQ(code, format(code));
17717 }
17718 
17719 TEST_F(FormatTest, HandleConflictMarkers) {
17720   // Git/SVN conflict markers.
17721   EXPECT_EQ("int a;\n"
17722             "void f() {\n"
17723             "  callme(some(parameter1,\n"
17724             "<<<<<<< text by the vcs\n"
17725             "              parameter2),\n"
17726             "||||||| text by the vcs\n"
17727             "              parameter2),\n"
17728             "         parameter3,\n"
17729             "======= text by the vcs\n"
17730             "              parameter2, parameter3),\n"
17731             ">>>>>>> text by the vcs\n"
17732             "         otherparameter);\n",
17733             format("int a;\n"
17734                    "void f() {\n"
17735                    "  callme(some(parameter1,\n"
17736                    "<<<<<<< text by the vcs\n"
17737                    "  parameter2),\n"
17738                    "||||||| text by the vcs\n"
17739                    "  parameter2),\n"
17740                    "  parameter3,\n"
17741                    "======= text by the vcs\n"
17742                    "  parameter2,\n"
17743                    "  parameter3),\n"
17744                    ">>>>>>> text by the vcs\n"
17745                    "  otherparameter);\n"));
17746 
17747   // Perforce markers.
17748   EXPECT_EQ("void f() {\n"
17749             "  function(\n"
17750             ">>>> text by the vcs\n"
17751             "      parameter,\n"
17752             "==== text by the vcs\n"
17753             "      parameter,\n"
17754             "==== text by the vcs\n"
17755             "      parameter,\n"
17756             "<<<< text by the vcs\n"
17757             "      parameter);\n",
17758             format("void f() {\n"
17759                    "  function(\n"
17760                    ">>>> text by the vcs\n"
17761                    "  parameter,\n"
17762                    "==== text by the vcs\n"
17763                    "  parameter,\n"
17764                    "==== text by the vcs\n"
17765                    "  parameter,\n"
17766                    "<<<< text by the vcs\n"
17767                    "  parameter);\n"));
17768 
17769   EXPECT_EQ("<<<<<<<\n"
17770             "|||||||\n"
17771             "=======\n"
17772             ">>>>>>>",
17773             format("<<<<<<<\n"
17774                    "|||||||\n"
17775                    "=======\n"
17776                    ">>>>>>>"));
17777 
17778   EXPECT_EQ("<<<<<<<\n"
17779             "|||||||\n"
17780             "int i;\n"
17781             "=======\n"
17782             ">>>>>>>",
17783             format("<<<<<<<\n"
17784                    "|||||||\n"
17785                    "int i;\n"
17786                    "=======\n"
17787                    ">>>>>>>"));
17788 
17789   // FIXME: Handle parsing of macros around conflict markers correctly:
17790   EXPECT_EQ("#define Macro \\\n"
17791             "<<<<<<<\n"
17792             "Something \\\n"
17793             "|||||||\n"
17794             "Else \\\n"
17795             "=======\n"
17796             "Other \\\n"
17797             ">>>>>>>\n"
17798             "    End int i;\n",
17799             format("#define Macro \\\n"
17800                    "<<<<<<<\n"
17801                    "  Something \\\n"
17802                    "|||||||\n"
17803                    "  Else \\\n"
17804                    "=======\n"
17805                    "  Other \\\n"
17806                    ">>>>>>>\n"
17807                    "  End\n"
17808                    "int i;\n"));
17809 }
17810 
17811 TEST_F(FormatTest, DisableRegions) {
17812   EXPECT_EQ("int i;\n"
17813             "// clang-format off\n"
17814             "  int j;\n"
17815             "// clang-format on\n"
17816             "int k;",
17817             format(" int  i;\n"
17818                    "   // clang-format off\n"
17819                    "  int j;\n"
17820                    " // clang-format on\n"
17821                    "   int   k;"));
17822   EXPECT_EQ("int i;\n"
17823             "/* clang-format off */\n"
17824             "  int j;\n"
17825             "/* clang-format on */\n"
17826             "int k;",
17827             format(" int  i;\n"
17828                    "   /* clang-format off */\n"
17829                    "  int j;\n"
17830                    " /* clang-format on */\n"
17831                    "   int   k;"));
17832 
17833   // Don't reflow comments within disabled regions.
17834   EXPECT_EQ("// clang-format off\n"
17835             "// long long long long long long line\n"
17836             "/* clang-format on */\n"
17837             "/* long long long\n"
17838             " * long long long\n"
17839             " * line */\n"
17840             "int i;\n"
17841             "/* clang-format off */\n"
17842             "/* long long long long long long line */\n",
17843             format("// clang-format off\n"
17844                    "// long long long long long long line\n"
17845                    "/* clang-format on */\n"
17846                    "/* long long long long long long line */\n"
17847                    "int i;\n"
17848                    "/* clang-format off */\n"
17849                    "/* long long long long long long line */\n",
17850                    getLLVMStyleWithColumns(20)));
17851 }
17852 
17853 TEST_F(FormatTest, DoNotCrashOnInvalidInput) {
17854   format("? ) =");
17855   verifyNoCrash("#define a\\\n /**/}");
17856 }
17857 
17858 TEST_F(FormatTest, FormatsTableGenCode) {
17859   FormatStyle Style = getLLVMStyle();
17860   Style.Language = FormatStyle::LK_TableGen;
17861   verifyFormat("include \"a.td\"\ninclude \"b.td\"", Style);
17862 }
17863 
17864 TEST_F(FormatTest, ArrayOfTemplates) {
17865   EXPECT_EQ("auto a = new unique_ptr<int>[10];",
17866             format("auto a = new unique_ptr<int > [ 10];"));
17867 
17868   FormatStyle Spaces = getLLVMStyle();
17869   Spaces.SpacesInSquareBrackets = true;
17870   EXPECT_EQ("auto a = new unique_ptr<int>[ 10 ];",
17871             format("auto a = new unique_ptr<int > [10];", Spaces));
17872 }
17873 
17874 TEST_F(FormatTest, ArrayAsTemplateType) {
17875   EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[10]>;",
17876             format("auto a = unique_ptr < Foo < Bar>[ 10]> ;"));
17877 
17878   FormatStyle Spaces = getLLVMStyle();
17879   Spaces.SpacesInSquareBrackets = true;
17880   EXPECT_EQ("auto a = unique_ptr<Foo<Bar>[ 10 ]>;",
17881             format("auto a = unique_ptr < Foo < Bar>[10]> ;", Spaces));
17882 }
17883 
17884 TEST_F(FormatTest, NoSpaceAfterSuper) { verifyFormat("__super::FooBar();"); }
17885 
17886 TEST(FormatStyle, GetStyleWithEmptyFileName) {
17887   llvm::vfs::InMemoryFileSystem FS;
17888   auto Style1 = getStyle("file", "", "Google", "", &FS);
17889   ASSERT_TRUE((bool)Style1);
17890   ASSERT_EQ(*Style1, getGoogleStyle());
17891 }
17892 
17893 TEST(FormatStyle, GetStyleOfFile) {
17894   llvm::vfs::InMemoryFileSystem FS;
17895   // Test 1: format file in the same directory.
17896   ASSERT_TRUE(
17897       FS.addFile("/a/.clang-format", 0,
17898                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM")));
17899   ASSERT_TRUE(
17900       FS.addFile("/a/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
17901   auto Style1 = getStyle("file", "/a/.clang-format", "Google", "", &FS);
17902   ASSERT_TRUE((bool)Style1);
17903   ASSERT_EQ(*Style1, getLLVMStyle());
17904 
17905   // Test 2.1: fallback to default.
17906   ASSERT_TRUE(
17907       FS.addFile("/b/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
17908   auto Style2 = getStyle("file", "/b/test.cpp", "Mozilla", "", &FS);
17909   ASSERT_TRUE((bool)Style2);
17910   ASSERT_EQ(*Style2, getMozillaStyle());
17911 
17912   // Test 2.2: no format on 'none' fallback style.
17913   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
17914   ASSERT_TRUE((bool)Style2);
17915   ASSERT_EQ(*Style2, getNoStyle());
17916 
17917   // Test 2.3: format if config is found with no based style while fallback is
17918   // 'none'.
17919   ASSERT_TRUE(FS.addFile("/b/.clang-format", 0,
17920                          llvm::MemoryBuffer::getMemBuffer("IndentWidth: 2")));
17921   Style2 = getStyle("file", "/b/test.cpp", "none", "", &FS);
17922   ASSERT_TRUE((bool)Style2);
17923   ASSERT_EQ(*Style2, getLLVMStyle());
17924 
17925   // Test 2.4: format if yaml with no based style, while fallback is 'none'.
17926   Style2 = getStyle("{}", "a.h", "none", "", &FS);
17927   ASSERT_TRUE((bool)Style2);
17928   ASSERT_EQ(*Style2, getLLVMStyle());
17929 
17930   // Test 3: format file in parent directory.
17931   ASSERT_TRUE(
17932       FS.addFile("/c/.clang-format", 0,
17933                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google")));
17934   ASSERT_TRUE(FS.addFile("/c/sub/sub/sub/test.cpp", 0,
17935                          llvm::MemoryBuffer::getMemBuffer("int i;")));
17936   auto Style3 = getStyle("file", "/c/sub/sub/sub/test.cpp", "LLVM", "", &FS);
17937   ASSERT_TRUE((bool)Style3);
17938   ASSERT_EQ(*Style3, getGoogleStyle());
17939 
17940   // Test 4: error on invalid fallback style
17941   auto Style4 = getStyle("file", "a.h", "KungFu", "", &FS);
17942   ASSERT_FALSE((bool)Style4);
17943   llvm::consumeError(Style4.takeError());
17944 
17945   // Test 5: error on invalid yaml on command line
17946   auto Style5 = getStyle("{invalid_key=invalid_value}", "a.h", "LLVM", "", &FS);
17947   ASSERT_FALSE((bool)Style5);
17948   llvm::consumeError(Style5.takeError());
17949 
17950   // Test 6: error on invalid style
17951   auto Style6 = getStyle("KungFu", "a.h", "LLVM", "", &FS);
17952   ASSERT_FALSE((bool)Style6);
17953   llvm::consumeError(Style6.takeError());
17954 
17955   // Test 7: found config file, error on parsing it
17956   ASSERT_TRUE(
17957       FS.addFile("/d/.clang-format", 0,
17958                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM\n"
17959                                                   "InvalidKey: InvalidValue")));
17960   ASSERT_TRUE(
17961       FS.addFile("/d/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;")));
17962   auto Style7a = getStyle("file", "/d/.clang-format", "LLVM", "", &FS);
17963   ASSERT_FALSE((bool)Style7a);
17964   llvm::consumeError(Style7a.takeError());
17965 
17966   auto Style7b = getStyle("file", "/d/.clang-format", "LLVM", "", &FS, true);
17967   ASSERT_TRUE((bool)Style7b);
17968 
17969   // Test 8: inferred per-language defaults apply.
17970   auto StyleTd = getStyle("file", "x.td", "llvm", "", &FS);
17971   ASSERT_TRUE((bool)StyleTd);
17972   ASSERT_EQ(*StyleTd, getLLVMStyle(FormatStyle::LK_TableGen));
17973 
17974   // Test 9.1: overwriting a file style, when parent no file exists with no
17975   // fallback style
17976   ASSERT_TRUE(FS.addFile(
17977       "/e/sub/.clang-format", 0,
17978       llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: InheritParentConfig\n"
17979                                        "ColumnLimit: 20")));
17980   ASSERT_TRUE(FS.addFile("/e/sub/code.cpp", 0,
17981                          llvm::MemoryBuffer::getMemBuffer("int i;")));
17982   auto Style9 = getStyle("file", "/e/sub/code.cpp", "none", "", &FS);
17983   ASSERT_TRUE(static_cast<bool>(Style9));
17984   ASSERT_EQ(*Style9, [] {
17985     auto Style = getNoStyle();
17986     Style.ColumnLimit = 20;
17987     return Style;
17988   }());
17989 
17990   // Test 9.2: with LLVM fallback style
17991   Style9 = getStyle("file", "/e/sub/code.cpp", "LLVM", "", &FS);
17992   ASSERT_TRUE(static_cast<bool>(Style9));
17993   ASSERT_EQ(*Style9, [] {
17994     auto Style = getLLVMStyle();
17995     Style.ColumnLimit = 20;
17996     return Style;
17997   }());
17998 
17999   // Test 9.3: with a parent file
18000   ASSERT_TRUE(
18001       FS.addFile("/e/.clang-format", 0,
18002                  llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google\n"
18003                                                   "UseTab: Always")));
18004   Style9 = getStyle("file", "/e/sub/code.cpp", "none", "", &FS);
18005   ASSERT_TRUE(static_cast<bool>(Style9));
18006   ASSERT_EQ(*Style9, [] {
18007     auto Style = getGoogleStyle();
18008     Style.ColumnLimit = 20;
18009     Style.UseTab = FormatStyle::UT_Always;
18010     return Style;
18011   }());
18012 
18013   // Test 9.4: propagate more than one level
18014   ASSERT_TRUE(FS.addFile("/e/sub/sub/code.cpp", 0,
18015                          llvm::MemoryBuffer::getMemBuffer("int i;")));
18016   ASSERT_TRUE(FS.addFile("/e/sub/sub/.clang-format", 0,
18017                          llvm::MemoryBuffer::getMemBuffer(
18018                              "BasedOnStyle: InheritParentConfig\n"
18019                              "WhitespaceSensitiveMacros: ['FOO', 'BAR']")));
18020   std::vector<std::string> NonDefaultWhiteSpaceMacros{"FOO", "BAR"};
18021 
18022   const auto SubSubStyle = [&NonDefaultWhiteSpaceMacros] {
18023     auto Style = getGoogleStyle();
18024     Style.ColumnLimit = 20;
18025     Style.UseTab = FormatStyle::UT_Always;
18026     Style.WhitespaceSensitiveMacros = NonDefaultWhiteSpaceMacros;
18027     return Style;
18028   }();
18029 
18030   ASSERT_NE(Style9->WhitespaceSensitiveMacros, NonDefaultWhiteSpaceMacros);
18031   Style9 = getStyle("file", "/e/sub/sub/code.cpp", "none", "", &FS);
18032   ASSERT_TRUE(static_cast<bool>(Style9));
18033   ASSERT_EQ(*Style9, SubSubStyle);
18034 
18035   // Test 9.5: use InheritParentConfig as style name
18036   Style9 =
18037       getStyle("inheritparentconfig", "/e/sub/sub/code.cpp", "none", "", &FS);
18038   ASSERT_TRUE(static_cast<bool>(Style9));
18039   ASSERT_EQ(*Style9, SubSubStyle);
18040 
18041   // Test 9.6: use command line style with inheritance
18042   Style9 = getStyle("{BasedOnStyle: InheritParentConfig}", "/e/sub/code.cpp",
18043                     "none", "", &FS);
18044   ASSERT_TRUE(static_cast<bool>(Style9));
18045   ASSERT_EQ(*Style9, SubSubStyle);
18046 
18047   // Test 9.7: use command line style with inheritance and own config
18048   Style9 = getStyle("{BasedOnStyle: InheritParentConfig, "
18049                     "WhitespaceSensitiveMacros: ['FOO', 'BAR']}",
18050                     "/e/sub/code.cpp", "none", "", &FS);
18051   ASSERT_TRUE(static_cast<bool>(Style9));
18052   ASSERT_EQ(*Style9, SubSubStyle);
18053 
18054   // Test 9.8: use inheritance from a file without BasedOnStyle
18055   ASSERT_TRUE(FS.addFile("/e/withoutbase/.clang-format", 0,
18056                          llvm::MemoryBuffer::getMemBuffer("ColumnLimit: 123")));
18057   ASSERT_TRUE(
18058       FS.addFile("/e/withoutbase/sub/.clang-format", 0,
18059                  llvm::MemoryBuffer::getMemBuffer(
18060                      "BasedOnStyle: InheritParentConfig\nIndentWidth: 7")));
18061   // Make sure we do not use the fallback style
18062   Style9 = getStyle("file", "/e/withoutbase/code.cpp", "google", "", &FS);
18063   ASSERT_TRUE(static_cast<bool>(Style9));
18064   ASSERT_EQ(*Style9, [] {
18065     auto Style = getLLVMStyle();
18066     Style.ColumnLimit = 123;
18067     return Style;
18068   }());
18069 
18070   Style9 = getStyle("file", "/e/withoutbase/sub/code.cpp", "google", "", &FS);
18071   ASSERT_TRUE(static_cast<bool>(Style9));
18072   ASSERT_EQ(*Style9, [] {
18073     auto Style = getLLVMStyle();
18074     Style.ColumnLimit = 123;
18075     Style.IndentWidth = 7;
18076     return Style;
18077   }());
18078 }
18079 
18080 TEST_F(ReplacementTest, FormatCodeAfterReplacements) {
18081   // Column limit is 20.
18082   std::string Code = "Type *a =\n"
18083                      "    new Type();\n"
18084                      "g(iiiii, 0, jjjjj,\n"
18085                      "  0, kkkkk, 0, mm);\n"
18086                      "int  bad     = format   ;";
18087   std::string Expected = "auto a = new Type();\n"
18088                          "g(iiiii, nullptr,\n"
18089                          "  jjjjj, nullptr,\n"
18090                          "  kkkkk, nullptr,\n"
18091                          "  mm);\n"
18092                          "int  bad     = format   ;";
18093   FileID ID = Context.createInMemoryFile("format.cpp", Code);
18094   tooling::Replacements Replaces = toReplacements(
18095       {tooling::Replacement(Context.Sources, Context.getLocation(ID, 1, 1), 6,
18096                             "auto "),
18097        tooling::Replacement(Context.Sources, Context.getLocation(ID, 3, 10), 1,
18098                             "nullptr"),
18099        tooling::Replacement(Context.Sources, Context.getLocation(ID, 4, 3), 1,
18100                             "nullptr"),
18101        tooling::Replacement(Context.Sources, Context.getLocation(ID, 4, 13), 1,
18102                             "nullptr")});
18103 
18104   format::FormatStyle Style = format::getLLVMStyle();
18105   Style.ColumnLimit = 20; // Set column limit to 20 to increase readibility.
18106   auto FormattedReplaces = formatReplacements(Code, Replaces, Style);
18107   EXPECT_TRUE(static_cast<bool>(FormattedReplaces))
18108       << llvm::toString(FormattedReplaces.takeError()) << "\n";
18109   auto Result = applyAllReplacements(Code, *FormattedReplaces);
18110   EXPECT_TRUE(static_cast<bool>(Result));
18111   EXPECT_EQ(Expected, *Result);
18112 }
18113 
18114 TEST_F(ReplacementTest, SortIncludesAfterReplacement) {
18115   std::string Code = "#include \"a.h\"\n"
18116                      "#include \"c.h\"\n"
18117                      "\n"
18118                      "int main() {\n"
18119                      "  return 0;\n"
18120                      "}";
18121   std::string Expected = "#include \"a.h\"\n"
18122                          "#include \"b.h\"\n"
18123                          "#include \"c.h\"\n"
18124                          "\n"
18125                          "int main() {\n"
18126                          "  return 0;\n"
18127                          "}";
18128   FileID ID = Context.createInMemoryFile("fix.cpp", Code);
18129   tooling::Replacements Replaces = toReplacements(
18130       {tooling::Replacement(Context.Sources, Context.getLocation(ID, 1, 1), 0,
18131                             "#include \"b.h\"\n")});
18132 
18133   format::FormatStyle Style = format::getLLVMStyle();
18134   Style.SortIncludes = FormatStyle::SI_CaseInsensitive;
18135   auto FormattedReplaces = formatReplacements(Code, Replaces, Style);
18136   EXPECT_TRUE(static_cast<bool>(FormattedReplaces))
18137       << llvm::toString(FormattedReplaces.takeError()) << "\n";
18138   auto Result = applyAllReplacements(Code, *FormattedReplaces);
18139   EXPECT_TRUE(static_cast<bool>(Result));
18140   EXPECT_EQ(Expected, *Result);
18141 }
18142 
18143 TEST_F(FormatTest, FormatSortsUsingDeclarations) {
18144   EXPECT_EQ("using std::cin;\n"
18145             "using std::cout;",
18146             format("using std::cout;\n"
18147                    "using std::cin;",
18148                    getGoogleStyle()));
18149 }
18150 
18151 TEST_F(FormatTest, UTF8CharacterLiteralCpp03) {
18152   format::FormatStyle Style = format::getLLVMStyle();
18153   Style.Standard = FormatStyle::LS_Cpp03;
18154   // cpp03 recognize this string as identifier u8 and literal character 'a'
18155   EXPECT_EQ("auto c = u8 'a';", format("auto c = u8'a';", Style));
18156 }
18157 
18158 TEST_F(FormatTest, UTF8CharacterLiteralCpp11) {
18159   // u8'a' is a C++17 feature, utf8 literal character, LS_Cpp11 covers
18160   // all modes, including C++11, C++14 and C++17
18161   EXPECT_EQ("auto c = u8'a';", format("auto c = u8'a';"));
18162 }
18163 
18164 TEST_F(FormatTest, DoNotFormatLikelyXml) {
18165   EXPECT_EQ("<!-- ;> -->", format("<!-- ;> -->", getGoogleStyle()));
18166   EXPECT_EQ(" <!-- >; -->", format(" <!-- >; -->", getGoogleStyle()));
18167 }
18168 
18169 TEST_F(FormatTest, StructuredBindings) {
18170   // Structured bindings is a C++17 feature.
18171   // all modes, including C++11, C++14 and C++17
18172   verifyFormat("auto [a, b] = f();");
18173   EXPECT_EQ("auto [a, b] = f();", format("auto[a, b] = f();"));
18174   EXPECT_EQ("const auto [a, b] = f();", format("const   auto[a, b] = f();"));
18175   EXPECT_EQ("auto const [a, b] = f();", format("auto  const[a, b] = f();"));
18176   EXPECT_EQ("auto const volatile [a, b] = f();",
18177             format("auto  const   volatile[a, b] = f();"));
18178   EXPECT_EQ("auto [a, b, c] = f();", format("auto   [  a  ,  b,c   ] = f();"));
18179   EXPECT_EQ("auto &[a, b, c] = f();",
18180             format("auto   &[  a  ,  b,c   ] = f();"));
18181   EXPECT_EQ("auto &&[a, b, c] = f();",
18182             format("auto   &&[  a  ,  b,c   ] = f();"));
18183   EXPECT_EQ("auto const &[a, b] = f();", format("auto  const&[a, b] = f();"));
18184   EXPECT_EQ("auto const volatile &&[a, b] = f();",
18185             format("auto  const  volatile  &&[a, b] = f();"));
18186   EXPECT_EQ("auto const &&[a, b] = f();",
18187             format("auto  const   &&  [a, b] = f();"));
18188   EXPECT_EQ("const auto &[a, b] = f();",
18189             format("const  auto  &  [a, b] = f();"));
18190   EXPECT_EQ("const auto volatile &&[a, b] = f();",
18191             format("const  auto   volatile  &&[a, b] = f();"));
18192   EXPECT_EQ("volatile const auto &&[a, b] = f();",
18193             format("volatile  const  auto   &&[a, b] = f();"));
18194   EXPECT_EQ("const auto &&[a, b] = f();",
18195             format("const  auto  &&  [a, b] = f();"));
18196 
18197   // Make sure we don't mistake structured bindings for lambdas.
18198   FormatStyle PointerMiddle = getLLVMStyle();
18199   PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle;
18200   verifyFormat("auto [a1, b]{A * i};", getGoogleStyle());
18201   verifyFormat("auto [a2, b]{A * i};", getLLVMStyle());
18202   verifyFormat("auto [a3, b]{A * i};", PointerMiddle);
18203   verifyFormat("auto const [a1, b]{A * i};", getGoogleStyle());
18204   verifyFormat("auto const [a2, b]{A * i};", getLLVMStyle());
18205   verifyFormat("auto const [a3, b]{A * i};", PointerMiddle);
18206   verifyFormat("auto const& [a1, b]{A * i};", getGoogleStyle());
18207   verifyFormat("auto const &[a2, b]{A * i};", getLLVMStyle());
18208   verifyFormat("auto const & [a3, b]{A * i};", PointerMiddle);
18209   verifyFormat("auto const&& [a1, b]{A * i};", getGoogleStyle());
18210   verifyFormat("auto const &&[a2, b]{A * i};", getLLVMStyle());
18211   verifyFormat("auto const && [a3, b]{A * i};", PointerMiddle);
18212 
18213   EXPECT_EQ("for (const auto &&[a, b] : some_range) {\n}",
18214             format("for (const auto   &&   [a, b] : some_range) {\n}"));
18215   EXPECT_EQ("for (const auto &[a, b] : some_range) {\n}",
18216             format("for (const auto   &   [a, b] : some_range) {\n}"));
18217   EXPECT_EQ("for (const auto [a, b] : some_range) {\n}",
18218             format("for (const auto[a, b] : some_range) {\n}"));
18219   EXPECT_EQ("auto [x, y](expr);", format("auto[x,y]  (expr);"));
18220   EXPECT_EQ("auto &[x, y](expr);", format("auto  &  [x,y]  (expr);"));
18221   EXPECT_EQ("auto &&[x, y](expr);", format("auto  &&  [x,y]  (expr);"));
18222   EXPECT_EQ("auto const &[x, y](expr);",
18223             format("auto  const  &  [x,y]  (expr);"));
18224   EXPECT_EQ("auto const &&[x, y](expr);",
18225             format("auto  const  &&  [x,y]  (expr);"));
18226   EXPECT_EQ("auto [x, y]{expr};", format("auto[x,y]     {expr};"));
18227   EXPECT_EQ("auto const &[x, y]{expr};",
18228             format("auto  const  &  [x,y]  {expr};"));
18229   EXPECT_EQ("auto const &&[x, y]{expr};",
18230             format("auto  const  &&  [x,y]  {expr};"));
18231 
18232   format::FormatStyle Spaces = format::getLLVMStyle();
18233   Spaces.SpacesInSquareBrackets = true;
18234   verifyFormat("auto [ a, b ] = f();", Spaces);
18235   verifyFormat("auto &&[ a, b ] = f();", Spaces);
18236   verifyFormat("auto &[ a, b ] = f();", Spaces);
18237   verifyFormat("auto const &&[ a, b ] = f();", Spaces);
18238   verifyFormat("auto const &[ a, b ] = f();", Spaces);
18239 }
18240 
18241 TEST_F(FormatTest, FileAndCode) {
18242   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.cc", ""));
18243   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.m", ""));
18244   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.mm", ""));
18245   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", ""));
18246   EXPECT_EQ(FormatStyle::LK_ObjC,
18247             guessLanguage("foo.h", "@interface Foo\n@end\n"));
18248   EXPECT_EQ(
18249       FormatStyle::LK_ObjC,
18250       guessLanguage("foo.h", "#define TRY(x, y) @try { x; } @finally { y; }"));
18251   EXPECT_EQ(FormatStyle::LK_ObjC,
18252             guessLanguage("foo.h", "#define AVAIL(x) @available(x, *))"));
18253   EXPECT_EQ(FormatStyle::LK_ObjC, guessLanguage("foo.h", "@class Foo;"));
18254   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo", ""));
18255   EXPECT_EQ(FormatStyle::LK_ObjC,
18256             guessLanguage("foo", "@interface Foo\n@end\n"));
18257   EXPECT_EQ(FormatStyle::LK_ObjC,
18258             guessLanguage("foo.h", "int DoStuff(CGRect rect);\n"));
18259   EXPECT_EQ(
18260       FormatStyle::LK_ObjC,
18261       guessLanguage("foo.h",
18262                     "#define MY_POINT_MAKE(x, y) CGPointMake((x), (y));\n"));
18263   EXPECT_EQ(
18264       FormatStyle::LK_Cpp,
18265       guessLanguage("foo.h", "#define FOO(...) auto bar = [] __VA_ARGS__;"));
18266 }
18267 
18268 TEST_F(FormatTest, GuessLanguageWithCpp11AttributeSpecifiers) {
18269   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "[[noreturn]];"));
18270   EXPECT_EQ(FormatStyle::LK_ObjC,
18271             guessLanguage("foo.h", "array[[calculator getIndex]];"));
18272   EXPECT_EQ(FormatStyle::LK_Cpp,
18273             guessLanguage("foo.h", "[[noreturn, deprecated(\"so sorry\")]];"));
18274   EXPECT_EQ(
18275       FormatStyle::LK_Cpp,
18276       guessLanguage("foo.h", "[[noreturn, deprecated(\"gone, sorry\")]];"));
18277   EXPECT_EQ(FormatStyle::LK_ObjC,
18278             guessLanguage("foo.h", "[[noreturn foo] bar];"));
18279   EXPECT_EQ(FormatStyle::LK_Cpp,
18280             guessLanguage("foo.h", "[[clang::fallthrough]];"));
18281   EXPECT_EQ(FormatStyle::LK_ObjC,
18282             guessLanguage("foo.h", "[[clang:fallthrough] foo];"));
18283   EXPECT_EQ(FormatStyle::LK_Cpp,
18284             guessLanguage("foo.h", "[[gsl::suppress(\"type\")]];"));
18285   EXPECT_EQ(FormatStyle::LK_Cpp,
18286             guessLanguage("foo.h", "[[using clang: fallthrough]];"));
18287   EXPECT_EQ(FormatStyle::LK_ObjC,
18288             guessLanguage("foo.h", "[[abusing clang:fallthrough] bar];"));
18289   EXPECT_EQ(FormatStyle::LK_Cpp,
18290             guessLanguage("foo.h", "[[using gsl: suppress(\"type\")]];"));
18291   EXPECT_EQ(
18292       FormatStyle::LK_Cpp,
18293       guessLanguage("foo.h", "for (auto &&[endpoint, stream] : streams_)"));
18294   EXPECT_EQ(
18295       FormatStyle::LK_Cpp,
18296       guessLanguage("foo.h",
18297                     "[[clang::callable_when(\"unconsumed\", \"unknown\")]]"));
18298   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "[[foo::bar, ...]]"));
18299 }
18300 
18301 TEST_F(FormatTest, GuessLanguageWithCaret) {
18302   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "FOO(^);"));
18303   EXPECT_EQ(FormatStyle::LK_Cpp, guessLanguage("foo.h", "FOO(^, Bar);"));
18304   EXPECT_EQ(FormatStyle::LK_ObjC,
18305             guessLanguage("foo.h", "int(^)(char, float);"));
18306   EXPECT_EQ(FormatStyle::LK_ObjC,
18307             guessLanguage("foo.h", "int(^foo)(char, float);"));
18308   EXPECT_EQ(FormatStyle::LK_ObjC,
18309             guessLanguage("foo.h", "int(^foo[10])(char, float);"));
18310   EXPECT_EQ(FormatStyle::LK_ObjC,
18311             guessLanguage("foo.h", "int(^foo[kNumEntries])(char, float);"));
18312   EXPECT_EQ(
18313       FormatStyle::LK_ObjC,
18314       guessLanguage("foo.h", "int(^foo[(kNumEntries + 10)])(char, float);"));
18315 }
18316 
18317 TEST_F(FormatTest, GuessLanguageWithPragmas) {
18318   EXPECT_EQ(FormatStyle::LK_Cpp,
18319             guessLanguage("foo.h", "__pragma(warning(disable:))"));
18320   EXPECT_EQ(FormatStyle::LK_Cpp,
18321             guessLanguage("foo.h", "#pragma(warning(disable:))"));
18322   EXPECT_EQ(FormatStyle::LK_Cpp,
18323             guessLanguage("foo.h", "_Pragma(warning(disable:))"));
18324 }
18325 
18326 TEST_F(FormatTest, FormatsInlineAsmSymbolicNames) {
18327   // ASM symbolic names are identifiers that must be surrounded by [] without
18328   // space in between:
18329   // https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html#InputOperands
18330 
18331   // Example from https://bugs.llvm.org/show_bug.cgi?id=45108.
18332   verifyFormat(R"(//
18333 asm volatile("mrs %x[result], FPCR" : [result] "=r"(result));
18334 )");
18335 
18336   // A list of several ASM symbolic names.
18337   verifyFormat(R"(asm("mov %[e], %[d]" : [d] "=rm"(d), [e] "rm"(*e));)");
18338 
18339   // ASM symbolic names in inline ASM with inputs and outputs.
18340   verifyFormat(R"(//
18341 asm("cmoveq %1, %2, %[result]"
18342     : [result] "=r"(result)
18343     : "r"(test), "r"(new), "[result]"(old));
18344 )");
18345 
18346   // ASM symbolic names in inline ASM with no outputs.
18347   verifyFormat(R"(asm("mov %[e], %[d]" : : [d] "=rm"(d), [e] "rm"(*e));)");
18348 }
18349 
18350 TEST_F(FormatTest, GuessedLanguageWithInlineAsmClobbers) {
18351   EXPECT_EQ(FormatStyle::LK_Cpp,
18352             guessLanguage("foo.h", "void f() {\n"
18353                                    "  asm (\"mov %[e], %[d]\"\n"
18354                                    "     : [d] \"=rm\" (d)\n"
18355                                    "       [e] \"rm\" (*e));\n"
18356                                    "}"));
18357   EXPECT_EQ(FormatStyle::LK_Cpp,
18358             guessLanguage("foo.h", "void f() {\n"
18359                                    "  _asm (\"mov %[e], %[d]\"\n"
18360                                    "     : [d] \"=rm\" (d)\n"
18361                                    "       [e] \"rm\" (*e));\n"
18362                                    "}"));
18363   EXPECT_EQ(FormatStyle::LK_Cpp,
18364             guessLanguage("foo.h", "void f() {\n"
18365                                    "  __asm (\"mov %[e], %[d]\"\n"
18366                                    "     : [d] \"=rm\" (d)\n"
18367                                    "       [e] \"rm\" (*e));\n"
18368                                    "}"));
18369   EXPECT_EQ(FormatStyle::LK_Cpp,
18370             guessLanguage("foo.h", "void f() {\n"
18371                                    "  __asm__ (\"mov %[e], %[d]\"\n"
18372                                    "     : [d] \"=rm\" (d)\n"
18373                                    "       [e] \"rm\" (*e));\n"
18374                                    "}"));
18375   EXPECT_EQ(FormatStyle::LK_Cpp,
18376             guessLanguage("foo.h", "void f() {\n"
18377                                    "  asm (\"mov %[e], %[d]\"\n"
18378                                    "     : [d] \"=rm\" (d),\n"
18379                                    "       [e] \"rm\" (*e));\n"
18380                                    "}"));
18381   EXPECT_EQ(FormatStyle::LK_Cpp,
18382             guessLanguage("foo.h", "void f() {\n"
18383                                    "  asm volatile (\"mov %[e], %[d]\"\n"
18384                                    "     : [d] \"=rm\" (d)\n"
18385                                    "       [e] \"rm\" (*e));\n"
18386                                    "}"));
18387 }
18388 
18389 TEST_F(FormatTest, GuessLanguageWithChildLines) {
18390   EXPECT_EQ(FormatStyle::LK_Cpp,
18391             guessLanguage("foo.h", "#define FOO ({ std::string s; })"));
18392   EXPECT_EQ(FormatStyle::LK_ObjC,
18393             guessLanguage("foo.h", "#define FOO ({ NSString *s; })"));
18394   EXPECT_EQ(
18395       FormatStyle::LK_Cpp,
18396       guessLanguage("foo.h", "#define FOO ({ foo(); ({ std::string s; }) })"));
18397   EXPECT_EQ(
18398       FormatStyle::LK_ObjC,
18399       guessLanguage("foo.h", "#define FOO ({ foo(); ({ NSString *s; }) })"));
18400 }
18401 
18402 TEST_F(FormatTest, TypenameMacros) {
18403   std::vector<std::string> TypenameMacros = {"STACK_OF", "LIST", "TAILQ_ENTRY"};
18404 
18405   // Test case reported in https://bugs.llvm.org/show_bug.cgi?id=30353
18406   FormatStyle Google = getGoogleStyleWithColumns(0);
18407   Google.TypenameMacros = TypenameMacros;
18408   verifyFormat("struct foo {\n"
18409                "  int bar;\n"
18410                "  TAILQ_ENTRY(a) bleh;\n"
18411                "};",
18412                Google);
18413 
18414   FormatStyle Macros = getLLVMStyle();
18415   Macros.TypenameMacros = TypenameMacros;
18416 
18417   verifyFormat("STACK_OF(int) a;", Macros);
18418   verifyFormat("STACK_OF(int) *a;", Macros);
18419   verifyFormat("STACK_OF(int const *) *a;", Macros);
18420   verifyFormat("STACK_OF(int *const) *a;", Macros);
18421   verifyFormat("STACK_OF(int, string) a;", Macros);
18422   verifyFormat("STACK_OF(LIST(int)) a;", Macros);
18423   verifyFormat("STACK_OF(LIST(int)) a, b;", Macros);
18424   verifyFormat("for (LIST(int) *a = NULL; a;) {\n}", Macros);
18425   verifyFormat("STACK_OF(int) f(LIST(int) *arg);", Macros);
18426   verifyFormat("vector<LIST(uint64_t) *attr> x;", Macros);
18427   verifyFormat("vector<LIST(uint64_t) *const> f(LIST(uint64_t) *arg);", Macros);
18428 
18429   Macros.PointerAlignment = FormatStyle::PAS_Left;
18430   verifyFormat("STACK_OF(int)* a;", Macros);
18431   verifyFormat("STACK_OF(int*)* a;", Macros);
18432   verifyFormat("x = (STACK_OF(uint64_t))*a;", Macros);
18433   verifyFormat("x = (STACK_OF(uint64_t))&a;", Macros);
18434   verifyFormat("vector<STACK_OF(uint64_t)* attr> x;", Macros);
18435 }
18436 
18437 TEST_F(FormatTest, AtomicQualifier) {
18438   // Check that we treate _Atomic as a type and not a function call
18439   FormatStyle Google = getGoogleStyleWithColumns(0);
18440   verifyFormat("struct foo {\n"
18441                "  int a1;\n"
18442                "  _Atomic(a) a2;\n"
18443                "  _Atomic(_Atomic(int) *const) a3;\n"
18444                "};",
18445                Google);
18446   verifyFormat("_Atomic(uint64_t) a;");
18447   verifyFormat("_Atomic(uint64_t) *a;");
18448   verifyFormat("_Atomic(uint64_t const *) *a;");
18449   verifyFormat("_Atomic(uint64_t *const) *a;");
18450   verifyFormat("_Atomic(const uint64_t *) *a;");
18451   verifyFormat("_Atomic(uint64_t) a;");
18452   verifyFormat("_Atomic(_Atomic(uint64_t)) a;");
18453   verifyFormat("_Atomic(_Atomic(uint64_t)) a, b;");
18454   verifyFormat("for (_Atomic(uint64_t) *a = NULL; a;) {\n}");
18455   verifyFormat("_Atomic(uint64_t) f(_Atomic(uint64_t) *arg);");
18456 
18457   verifyFormat("_Atomic(uint64_t) *s(InitValue);");
18458   verifyFormat("_Atomic(uint64_t) *s{InitValue};");
18459   FormatStyle Style = getLLVMStyle();
18460   Style.PointerAlignment = FormatStyle::PAS_Left;
18461   verifyFormat("_Atomic(uint64_t)* s(InitValue);", Style);
18462   verifyFormat("_Atomic(uint64_t)* s{InitValue};", Style);
18463   verifyFormat("_Atomic(int)* a;", Style);
18464   verifyFormat("_Atomic(int*)* a;", Style);
18465   verifyFormat("vector<_Atomic(uint64_t)* attr> x;", Style);
18466 
18467   Style.SpacesInCStyleCastParentheses = true;
18468   Style.SpacesInParentheses = false;
18469   verifyFormat("x = ( _Atomic(uint64_t) )*a;", Style);
18470   Style.SpacesInCStyleCastParentheses = false;
18471   Style.SpacesInParentheses = true;
18472   verifyFormat("x = (_Atomic( uint64_t ))*a;", Style);
18473   verifyFormat("x = (_Atomic( uint64_t ))&a;", Style);
18474 }
18475 
18476 TEST_F(FormatTest, AmbersandInLamda) {
18477   // Test case reported in https://bugs.llvm.org/show_bug.cgi?id=41899
18478   FormatStyle AlignStyle = getLLVMStyle();
18479   AlignStyle.PointerAlignment = FormatStyle::PAS_Left;
18480   verifyFormat("auto lambda = [&a = a]() { a = 2; };", AlignStyle);
18481   AlignStyle.PointerAlignment = FormatStyle::PAS_Right;
18482   verifyFormat("auto lambda = [&a = a]() { a = 2; };", AlignStyle);
18483 }
18484 
18485 TEST_F(FormatTest, SpacesInConditionalStatement) {
18486   FormatStyle Spaces = getLLVMStyle();
18487   Spaces.SpacesInConditionalStatement = true;
18488   verifyFormat("for ( int i = 0; i; i++ )\n  continue;", Spaces);
18489   verifyFormat("if ( !a )\n  return;", Spaces);
18490   verifyFormat("if ( a )\n  return;", Spaces);
18491   verifyFormat("if constexpr ( a )\n  return;", Spaces);
18492   verifyFormat("switch ( a )\ncase 1:\n  return;", Spaces);
18493   verifyFormat("while ( a )\n  return;", Spaces);
18494   verifyFormat("while ( (a && b) )\n  return;", Spaces);
18495   verifyFormat("do {\n} while ( 1 != 0 );", Spaces);
18496   verifyFormat("try {\n} catch ( const std::exception & ) {\n}", Spaces);
18497   // Check that space on the left of "::" is inserted as expected at beginning
18498   // of condition.
18499   verifyFormat("while ( ::func() )\n  return;", Spaces);
18500 }
18501 
18502 TEST_F(FormatTest, AlternativeOperators) {
18503   // Test case for ensuring alternate operators are not
18504   // combined with their right most neighbour.
18505   verifyFormat("int a and b;");
18506   verifyFormat("int a and_eq b;");
18507   verifyFormat("int a bitand b;");
18508   verifyFormat("int a bitor b;");
18509   verifyFormat("int a compl b;");
18510   verifyFormat("int a not b;");
18511   verifyFormat("int a not_eq b;");
18512   verifyFormat("int a or b;");
18513   verifyFormat("int a xor b;");
18514   verifyFormat("int a xor_eq b;");
18515   verifyFormat("return this not_eq bitand other;");
18516   verifyFormat("bool operator not_eq(const X bitand other)");
18517 
18518   verifyFormat("int a and 5;");
18519   verifyFormat("int a and_eq 5;");
18520   verifyFormat("int a bitand 5;");
18521   verifyFormat("int a bitor 5;");
18522   verifyFormat("int a compl 5;");
18523   verifyFormat("int a not 5;");
18524   verifyFormat("int a not_eq 5;");
18525   verifyFormat("int a or 5;");
18526   verifyFormat("int a xor 5;");
18527   verifyFormat("int a xor_eq 5;");
18528 
18529   verifyFormat("int a compl(5);");
18530   verifyFormat("int a not(5);");
18531 
18532   /* FIXME handle alternate tokens
18533    * https://en.cppreference.com/w/cpp/language/operator_alternative
18534   // alternative tokens
18535   verifyFormat("compl foo();");     //  ~foo();
18536   verifyFormat("foo() <%%>;");      // foo();
18537   verifyFormat("void foo() <%%>;"); // void foo(){}
18538   verifyFormat("int a <:1:>;");     // int a[1];[
18539   verifyFormat("%:define ABC abc"); // #define ABC abc
18540   verifyFormat("%:%:");             // ##
18541   */
18542 }
18543 
18544 TEST_F(FormatTest, STLWhileNotDefineChed) {
18545   verifyFormat("#if defined(while)\n"
18546                "#define while EMIT WARNING C4005\n"
18547                "#endif // while");
18548 }
18549 
18550 TEST_F(FormatTest, OperatorSpacing) {
18551   FormatStyle Style = getLLVMStyle();
18552   Style.PointerAlignment = FormatStyle::PAS_Right;
18553   verifyFormat("Foo::operator*();", Style);
18554   verifyFormat("Foo::operator void *();", Style);
18555   verifyFormat("Foo::operator void **();", Style);
18556   verifyFormat("Foo::operator void *&();", Style);
18557   verifyFormat("Foo::operator void *&&();", Style);
18558   verifyFormat("Foo::operator()(void *);", Style);
18559   verifyFormat("Foo::operator*(void *);", Style);
18560   verifyFormat("Foo::operator*();", Style);
18561   verifyFormat("Foo::operator**();", Style);
18562   verifyFormat("Foo::operator&();", Style);
18563   verifyFormat("Foo::operator<int> *();", Style);
18564   verifyFormat("Foo::operator<Foo> *();", Style);
18565   verifyFormat("Foo::operator<int> **();", Style);
18566   verifyFormat("Foo::operator<Foo> **();", Style);
18567   verifyFormat("Foo::operator<int> &();", Style);
18568   verifyFormat("Foo::operator<Foo> &();", Style);
18569   verifyFormat("Foo::operator<int> &&();", Style);
18570   verifyFormat("Foo::operator<Foo> &&();", Style);
18571   verifyFormat("Foo::operator<int> *&();", Style);
18572   verifyFormat("Foo::operator<Foo> *&();", Style);
18573   verifyFormat("Foo::operator<int> *&&();", Style);
18574   verifyFormat("Foo::operator<Foo> *&&();", Style);
18575   verifyFormat("operator*(int (*)(), class Foo);", Style);
18576 
18577   verifyFormat("Foo::operator&();", Style);
18578   verifyFormat("Foo::operator void &();", Style);
18579   verifyFormat("Foo::operator()(void &);", Style);
18580   verifyFormat("Foo::operator&(void &);", Style);
18581   verifyFormat("Foo::operator&();", Style);
18582   verifyFormat("operator&(int (&)(), class Foo);", Style);
18583 
18584   verifyFormat("Foo::operator&&();", Style);
18585   verifyFormat("Foo::operator**();", Style);
18586   verifyFormat("Foo::operator void &&();", Style);
18587   verifyFormat("Foo::operator()(void &&);", Style);
18588   verifyFormat("Foo::operator&&(void &&);", Style);
18589   verifyFormat("Foo::operator&&();", Style);
18590   verifyFormat("operator&&(int(&&)(), class Foo);", Style);
18591   verifyFormat("operator const nsTArrayRight<E> &()", Style);
18592   verifyFormat("[[nodiscard]] operator const nsTArrayRight<E, Allocator> &()",
18593                Style);
18594   verifyFormat("operator void **()", Style);
18595   verifyFormat("operator const FooRight<Object> &()", Style);
18596   verifyFormat("operator const FooRight<Object> *()", Style);
18597   verifyFormat("operator const FooRight<Object> **()", Style);
18598   verifyFormat("operator const FooRight<Object> *&()", Style);
18599   verifyFormat("operator const FooRight<Object> *&&()", Style);
18600 
18601   Style.PointerAlignment = FormatStyle::PAS_Left;
18602   verifyFormat("Foo::operator*();", Style);
18603   verifyFormat("Foo::operator**();", Style);
18604   verifyFormat("Foo::operator void*();", Style);
18605   verifyFormat("Foo::operator void**();", Style);
18606   verifyFormat("Foo::operator void*&();", Style);
18607   verifyFormat("Foo::operator/*comment*/ void*();", Style);
18608   verifyFormat("Foo::operator/*a*/ const /*b*/ void*();", Style);
18609   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void*();", Style);
18610   verifyFormat("Foo::operator()(void*);", Style);
18611   verifyFormat("Foo::operator*(void*);", Style);
18612   verifyFormat("Foo::operator*();", Style);
18613   verifyFormat("Foo::operator<int>*();", Style);
18614   verifyFormat("Foo::operator<Foo>*();", Style);
18615   verifyFormat("Foo::operator<int>**();", Style);
18616   verifyFormat("Foo::operator<Foo>**();", Style);
18617   verifyFormat("Foo::operator<Foo>*&();", Style);
18618   verifyFormat("Foo::operator<int>&();", Style);
18619   verifyFormat("Foo::operator<Foo>&();", Style);
18620   verifyFormat("Foo::operator<int>&&();", Style);
18621   verifyFormat("Foo::operator<Foo>&&();", Style);
18622   verifyFormat("Foo::operator<int>*&();", Style);
18623   verifyFormat("Foo::operator<Foo>*&();", Style);
18624   verifyFormat("operator*(int (*)(), class Foo);", Style);
18625 
18626   verifyFormat("Foo::operator&();", Style);
18627   verifyFormat("Foo::operator void&();", Style);
18628   verifyFormat("Foo::operator/*comment*/ void&();", Style);
18629   verifyFormat("Foo::operator/*a*/ const /*b*/ void&();", Style);
18630   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void&();", Style);
18631   verifyFormat("Foo::operator()(void&);", Style);
18632   verifyFormat("Foo::operator&(void&);", Style);
18633   verifyFormat("Foo::operator&();", Style);
18634   verifyFormat("operator&(int (&)(), class Foo);", Style);
18635 
18636   verifyFormat("Foo::operator&&();", Style);
18637   verifyFormat("Foo::operator void&&();", Style);
18638   verifyFormat("Foo::operator/*comment*/ void&&();", Style);
18639   verifyFormat("Foo::operator/*a*/ const /*b*/ void&&();", Style);
18640   verifyFormat("Foo::operator/*a*/ volatile /*b*/ void&&();", Style);
18641   verifyFormat("Foo::operator()(void&&);", Style);
18642   verifyFormat("Foo::operator&&(void&&);", Style);
18643   verifyFormat("Foo::operator&&();", Style);
18644   verifyFormat("operator&&(int(&&)(), class Foo);", Style);
18645   verifyFormat("operator const nsTArrayLeft<E>&()", Style);
18646   verifyFormat("[[nodiscard]] operator const nsTArrayLeft<E, Allocator>&()",
18647                Style);
18648   verifyFormat("operator void**()", Style);
18649   verifyFormat("operator const FooLeft<Object>&()", Style);
18650   verifyFormat("operator const FooLeft<Object>*()", Style);
18651   verifyFormat("operator const FooLeft<Object>**()", Style);
18652   verifyFormat("operator const FooLeft<Object>*&()", Style);
18653   verifyFormat("operator const FooLeft<Object>*&&()", Style);
18654 
18655   // PR45107
18656   verifyFormat("operator Vector<String>&();", Style);
18657   verifyFormat("operator const Vector<String>&();", Style);
18658   verifyFormat("operator foo::Bar*();", Style);
18659   verifyFormat("operator const Foo<X>::Bar<Y>*();", Style);
18660   verifyFormat("operator/*a*/ const /*b*/ Foo /*c*/<X> /*d*/ ::Bar<Y>*();",
18661                Style);
18662 
18663   Style.PointerAlignment = FormatStyle::PAS_Middle;
18664   verifyFormat("Foo::operator*();", Style);
18665   verifyFormat("Foo::operator void *();", Style);
18666   verifyFormat("Foo::operator()(void *);", Style);
18667   verifyFormat("Foo::operator*(void *);", Style);
18668   verifyFormat("Foo::operator*();", Style);
18669   verifyFormat("operator*(int (*)(), class Foo);", Style);
18670 
18671   verifyFormat("Foo::operator&();", Style);
18672   verifyFormat("Foo::operator void &();", Style);
18673   verifyFormat("Foo::operator()(void &);", Style);
18674   verifyFormat("Foo::operator&(void &);", Style);
18675   verifyFormat("Foo::operator&();", Style);
18676   verifyFormat("operator&(int (&)(), class Foo);", Style);
18677 
18678   verifyFormat("Foo::operator&&();", Style);
18679   verifyFormat("Foo::operator void &&();", Style);
18680   verifyFormat("Foo::operator()(void &&);", Style);
18681   verifyFormat("Foo::operator&&(void &&);", Style);
18682   verifyFormat("Foo::operator&&();", Style);
18683   verifyFormat("operator&&(int(&&)(), class Foo);", Style);
18684 }
18685 
18686 TEST_F(FormatTest, OperatorPassedAsAFunctionPtr) {
18687   FormatStyle Style = getLLVMStyle();
18688   // PR46157
18689   verifyFormat("foo(operator+, -42);", Style);
18690   verifyFormat("foo(operator++, -42);", Style);
18691   verifyFormat("foo(operator--, -42);", Style);
18692   verifyFormat("foo(-42, operator--);", Style);
18693   verifyFormat("foo(-42, operator, );", Style);
18694   verifyFormat("foo(operator, , -42);", Style);
18695 }
18696 
18697 TEST_F(FormatTest, WhitespaceSensitiveMacros) {
18698   FormatStyle Style = getLLVMStyle();
18699   Style.WhitespaceSensitiveMacros.push_back("FOO");
18700 
18701   // Don't use the helpers here, since 'mess up' will change the whitespace
18702   // and these are all whitespace sensitive by definition
18703   EXPECT_EQ("FOO(String-ized&Messy+But(: :Still)=Intentional);",
18704             format("FOO(String-ized&Messy+But(: :Still)=Intentional);", Style));
18705   EXPECT_EQ(
18706       "FOO(String-ized&Messy+But\\(: :Still)=Intentional);",
18707       format("FOO(String-ized&Messy+But\\(: :Still)=Intentional);", Style));
18708   EXPECT_EQ("FOO(String-ized&Messy+But,: :Still=Intentional);",
18709             format("FOO(String-ized&Messy+But,: :Still=Intentional);", Style));
18710   EXPECT_EQ("FOO(String-ized&Messy+But,: :\n"
18711             "       Still=Intentional);",
18712             format("FOO(String-ized&Messy+But,: :\n"
18713                    "       Still=Intentional);",
18714                    Style));
18715   Style.AlignConsecutiveAssignments = FormatStyle::ACS_Consecutive;
18716   EXPECT_EQ("FOO(String-ized=&Messy+But,: :\n"
18717             "       Still=Intentional);",
18718             format("FOO(String-ized=&Messy+But,: :\n"
18719                    "       Still=Intentional);",
18720                    Style));
18721 
18722   Style.ColumnLimit = 21;
18723   EXPECT_EQ("FOO(String-ized&Messy+But: :Still=Intentional);",
18724             format("FOO(String-ized&Messy+But: :Still=Intentional);", Style));
18725 }
18726 
18727 TEST_F(FormatTest, VeryLongNamespaceCommentSplit) {
18728   // These tests are not in NamespaceFixer because that doesn't
18729   // test its interaction with line wrapping
18730   FormatStyle Style = getLLVMStyle();
18731   Style.ColumnLimit = 80;
18732   verifyFormat("namespace {\n"
18733                "int i;\n"
18734                "int j;\n"
18735                "} // namespace",
18736                Style);
18737 
18738   verifyFormat("namespace AAA {\n"
18739                "int i;\n"
18740                "int j;\n"
18741                "} // namespace AAA",
18742                Style);
18743 
18744   EXPECT_EQ("namespace Averyveryveryverylongnamespace {\n"
18745             "int i;\n"
18746             "int j;\n"
18747             "} // namespace Averyveryveryverylongnamespace",
18748             format("namespace Averyveryveryverylongnamespace {\n"
18749                    "int i;\n"
18750                    "int j;\n"
18751                    "}",
18752                    Style));
18753 
18754   EXPECT_EQ(
18755       "namespace "
18756       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::\n"
18757       "    went::mad::now {\n"
18758       "int i;\n"
18759       "int j;\n"
18760       "} // namespace\n"
18761       "  // "
18762       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::"
18763       "went::mad::now",
18764       format("namespace "
18765              "would::it::save::you::a::lot::of::time::if_::i::"
18766              "just::gave::up::and_::went::mad::now {\n"
18767              "int i;\n"
18768              "int j;\n"
18769              "}",
18770              Style));
18771 
18772   // This used to duplicate the comment again and again on subsequent runs
18773   EXPECT_EQ(
18774       "namespace "
18775       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::\n"
18776       "    went::mad::now {\n"
18777       "int i;\n"
18778       "int j;\n"
18779       "} // namespace\n"
18780       "  // "
18781       "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::and_::"
18782       "went::mad::now",
18783       format("namespace "
18784              "would::it::save::you::a::lot::of::time::if_::i::"
18785              "just::gave::up::and_::went::mad::now {\n"
18786              "int i;\n"
18787              "int j;\n"
18788              "} // namespace\n"
18789              "  // "
18790              "would::it::save::you::a::lot::of::time::if_::i::just::gave::up::"
18791              "and_::went::mad::now",
18792              Style));
18793 }
18794 
18795 TEST_F(FormatTest, LikelyUnlikely) {
18796   FormatStyle Style = getLLVMStyle();
18797 
18798   verifyFormat("if (argc > 5) [[unlikely]] {\n"
18799                "  return 29;\n"
18800                "}",
18801                Style);
18802 
18803   verifyFormat("if (argc > 5) [[likely]] {\n"
18804                "  return 29;\n"
18805                "}",
18806                Style);
18807 
18808   verifyFormat("if (argc > 5) [[unlikely]] {\n"
18809                "  return 29;\n"
18810                "} else [[likely]] {\n"
18811                "  return 42;\n"
18812                "}\n",
18813                Style);
18814 
18815   verifyFormat("if (argc > 5) [[unlikely]] {\n"
18816                "  return 29;\n"
18817                "} else if (argc > 10) [[likely]] {\n"
18818                "  return 99;\n"
18819                "} else {\n"
18820                "  return 42;\n"
18821                "}\n",
18822                Style);
18823 
18824   verifyFormat("if (argc > 5) [[gnu::unused]] {\n"
18825                "  return 29;\n"
18826                "}",
18827                Style);
18828 }
18829 
18830 TEST_F(FormatTest, PenaltyIndentedWhitespace) {
18831   verifyFormat("Constructor()\n"
18832                "    : aaaaaa(aaaaaa), aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
18833                "                          aaaa(aaaaaaaaaaaaaaaaaa, "
18834                "aaaaaaaaaaaaaaaaaat))");
18835   verifyFormat("Constructor()\n"
18836                "    : aaaaaaaaaaaaa(aaaaaa), "
18837                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa)");
18838 
18839   FormatStyle StyleWithWhitespacePenalty = getLLVMStyle();
18840   StyleWithWhitespacePenalty.PenaltyIndentedWhitespace = 5;
18841   verifyFormat("Constructor()\n"
18842                "    : aaaaaa(aaaaaa),\n"
18843                "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
18844                "          aaaa(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaat))",
18845                StyleWithWhitespacePenalty);
18846   verifyFormat("Constructor()\n"
18847                "    : aaaaaaaaaaaaa(aaaaaa), "
18848                "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa)",
18849                StyleWithWhitespacePenalty);
18850 }
18851 
18852 TEST_F(FormatTest, LLVMDefaultStyle) {
18853   FormatStyle Style = getLLVMStyle();
18854   verifyFormat("extern \"C\" {\n"
18855                "int foo();\n"
18856                "}",
18857                Style);
18858 }
18859 TEST_F(FormatTest, GNUDefaultStyle) {
18860   FormatStyle Style = getGNUStyle();
18861   verifyFormat("extern \"C\"\n"
18862                "{\n"
18863                "  int foo ();\n"
18864                "}",
18865                Style);
18866 }
18867 TEST_F(FormatTest, MozillaDefaultStyle) {
18868   FormatStyle Style = getMozillaStyle();
18869   verifyFormat("extern \"C\"\n"
18870                "{\n"
18871                "  int foo();\n"
18872                "}",
18873                Style);
18874 }
18875 TEST_F(FormatTest, GoogleDefaultStyle) {
18876   FormatStyle Style = getGoogleStyle();
18877   verifyFormat("extern \"C\" {\n"
18878                "int foo();\n"
18879                "}",
18880                Style);
18881 }
18882 TEST_F(FormatTest, ChromiumDefaultStyle) {
18883   FormatStyle Style = getChromiumStyle(FormatStyle::LanguageKind::LK_Cpp);
18884   verifyFormat("extern \"C\" {\n"
18885                "int foo();\n"
18886                "}",
18887                Style);
18888 }
18889 TEST_F(FormatTest, MicrosoftDefaultStyle) {
18890   FormatStyle Style = getMicrosoftStyle(FormatStyle::LanguageKind::LK_Cpp);
18891   verifyFormat("extern \"C\"\n"
18892                "{\n"
18893                "    int foo();\n"
18894                "}",
18895                Style);
18896 }
18897 TEST_F(FormatTest, WebKitDefaultStyle) {
18898   FormatStyle Style = getWebKitStyle();
18899   verifyFormat("extern \"C\" {\n"
18900                "int foo();\n"
18901                "}",
18902                Style);
18903 }
18904 
18905 TEST_F(FormatTest, ConceptsAndRequires) {
18906   FormatStyle Style = getLLVMStyle();
18907   Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None;
18908 
18909   verifyFormat("template <typename T>\n"
18910                "concept Hashable = requires(T a) {\n"
18911                "  { std::hash<T>{}(a) } -> std::convertible_to<std::size_t>;\n"
18912                "};",
18913                Style);
18914   verifyFormat("template <typename T>\n"
18915                "concept EqualityComparable = requires(T a, T b) {\n"
18916                "  { a == b } -> bool;\n"
18917                "};",
18918                Style);
18919   verifyFormat("template <typename T>\n"
18920                "concept EqualityComparable = requires(T a, T b) {\n"
18921                "  { a == b } -> bool;\n"
18922                "  { a != b } -> bool;\n"
18923                "};",
18924                Style);
18925   verifyFormat("template <typename T>\n"
18926                "concept EqualityComparable = requires(T a, T b) {\n"
18927                "  { a == b } -> bool;\n"
18928                "  { a != b } -> bool;\n"
18929                "};",
18930                Style);
18931 
18932   verifyFormat("template <typename It>\n"
18933                "requires Iterator<It>\n"
18934                "void sort(It begin, It end) {\n"
18935                "  //....\n"
18936                "}",
18937                Style);
18938 
18939   verifyFormat("template <typename T>\n"
18940                "concept Large = sizeof(T) > 10;",
18941                Style);
18942 
18943   verifyFormat("template <typename T, typename U>\n"
18944                "concept FooableWith = requires(T t, U u) {\n"
18945                "  typename T::foo_type;\n"
18946                "  { t.foo(u) } -> typename T::foo_type;\n"
18947                "  t++;\n"
18948                "};\n"
18949                "void doFoo(FooableWith<int> auto t) {\n"
18950                "  t.foo(3);\n"
18951                "}",
18952                Style);
18953   verifyFormat("template <typename T>\n"
18954                "concept Context = sizeof(T) == 1;",
18955                Style);
18956   verifyFormat("template <typename T>\n"
18957                "concept Context = is_specialization_of_v<context, T>;",
18958                Style);
18959   verifyFormat("template <typename T>\n"
18960                "concept Node = std::is_object_v<T>;",
18961                Style);
18962   verifyFormat("template <typename T>\n"
18963                "concept Tree = true;",
18964                Style);
18965 
18966   verifyFormat("template <typename T> int g(T i) requires Concept1<I> {\n"
18967                "  //...\n"
18968                "}",
18969                Style);
18970 
18971   verifyFormat(
18972       "template <typename T> int g(T i) requires Concept1<I> && Concept2<I> {\n"
18973       "  //...\n"
18974       "}",
18975       Style);
18976 
18977   verifyFormat(
18978       "template <typename T> int g(T i) requires Concept1<I> || Concept2<I> {\n"
18979       "  //...\n"
18980       "}",
18981       Style);
18982 
18983   verifyFormat("template <typename T>\n"
18984                "veryveryvery_long_return_type g(T i) requires Concept1<I> || "
18985                "Concept2<I> {\n"
18986                "  //...\n"
18987                "}",
18988                Style);
18989 
18990   verifyFormat("template <typename T>\n"
18991                "veryveryvery_long_return_type g(T i) requires Concept1<I> && "
18992                "Concept2<I> {\n"
18993                "  //...\n"
18994                "}",
18995                Style);
18996 
18997   verifyFormat(
18998       "template <typename T>\n"
18999       "veryveryvery_long_return_type g(T i) requires Concept1 && Concept2 {\n"
19000       "  //...\n"
19001       "}",
19002       Style);
19003 
19004   verifyFormat(
19005       "template <typename T>\n"
19006       "veryveryvery_long_return_type g(T i) requires Concept1 || Concept2 {\n"
19007       "  //...\n"
19008       "}",
19009       Style);
19010 
19011   verifyFormat("template <typename It>\n"
19012                "requires Foo<It>() && Bar<It> {\n"
19013                "  //....\n"
19014                "}",
19015                Style);
19016 
19017   verifyFormat("template <typename It>\n"
19018                "requires Foo<Bar<It>>() && Bar<Foo<It, It>> {\n"
19019                "  //....\n"
19020                "}",
19021                Style);
19022 
19023   verifyFormat("template <typename It>\n"
19024                "requires Foo<Bar<It, It>>() && Bar<Foo<It, It>> {\n"
19025                "  //....\n"
19026                "}",
19027                Style);
19028 
19029   verifyFormat(
19030       "template <typename It>\n"
19031       "requires Foo<Bar<It>, Baz<It>>() && Bar<Foo<It>, Baz<It, It>> {\n"
19032       "  //....\n"
19033       "}",
19034       Style);
19035 
19036   Style.IndentRequires = true;
19037   verifyFormat("template <typename It>\n"
19038                "  requires Iterator<It>\n"
19039                "void sort(It begin, It end) {\n"
19040                "  //....\n"
19041                "}",
19042                Style);
19043   verifyFormat("template <std::size index_>\n"
19044                "  requires(index_ < sizeof...(Children_))\n"
19045                "Tree auto &child() {\n"
19046                "  // ...\n"
19047                "}",
19048                Style);
19049 
19050   Style.SpaceBeforeParens = FormatStyle::SBPO_Always;
19051   verifyFormat("template <typename T>\n"
19052                "concept Hashable = requires (T a) {\n"
19053                "  { std::hash<T>{}(a) } -> std::convertible_to<std::size_t>;\n"
19054                "};",
19055                Style);
19056 
19057   verifyFormat("template <class T = void>\n"
19058                "  requires EqualityComparable<T> || Same<T, void>\n"
19059                "struct equal_to;",
19060                Style);
19061 
19062   verifyFormat("template <class T>\n"
19063                "  requires requires {\n"
19064                "    T{};\n"
19065                "    T (int);\n"
19066                "  }\n",
19067                Style);
19068 
19069   Style.ColumnLimit = 78;
19070   verifyFormat("template <typename T>\n"
19071                "concept Context = Traits<typename T::traits_type> and\n"
19072                "    Interface<typename T::interface_type> and\n"
19073                "    Request<typename T::request_type> and\n"
19074                "    Response<typename T::response_type> and\n"
19075                "    ContextExtension<typename T::extension_type> and\n"
19076                "    ::std::is_copy_constructable<T> and "
19077                "::std::is_move_constructable<T> and\n"
19078                "    requires (T c) {\n"
19079                "  { c.response; } -> Response;\n"
19080                "} and requires (T c) {\n"
19081                "  { c.request; } -> Request;\n"
19082                "}\n",
19083                Style);
19084 
19085   verifyFormat("template <typename T>\n"
19086                "concept Context = Traits<typename T::traits_type> or\n"
19087                "    Interface<typename T::interface_type> or\n"
19088                "    Request<typename T::request_type> or\n"
19089                "    Response<typename T::response_type> or\n"
19090                "    ContextExtension<typename T::extension_type> or\n"
19091                "    ::std::is_copy_constructable<T> or "
19092                "::std::is_move_constructable<T> or\n"
19093                "    requires (T c) {\n"
19094                "  { c.response; } -> Response;\n"
19095                "} or requires (T c) {\n"
19096                "  { c.request; } -> Request;\n"
19097                "}\n",
19098                Style);
19099 
19100   verifyFormat("template <typename T>\n"
19101                "concept Context = Traits<typename T::traits_type> &&\n"
19102                "    Interface<typename T::interface_type> &&\n"
19103                "    Request<typename T::request_type> &&\n"
19104                "    Response<typename T::response_type> &&\n"
19105                "    ContextExtension<typename T::extension_type> &&\n"
19106                "    ::std::is_copy_constructable<T> && "
19107                "::std::is_move_constructable<T> &&\n"
19108                "    requires (T c) {\n"
19109                "  { c.response; } -> Response;\n"
19110                "} && requires (T c) {\n"
19111                "  { c.request; } -> Request;\n"
19112                "}\n",
19113                Style);
19114 
19115   verifyFormat("template <typename T>\nconcept someConcept = Constraint1<T> && "
19116                "Constraint2<T>;");
19117 
19118   Style.BreakBeforeBraces = FormatStyle::BS_Custom;
19119   Style.BraceWrapping.AfterFunction = true;
19120   Style.BraceWrapping.AfterClass = true;
19121   Style.AlwaysBreakTemplateDeclarations = FormatStyle::BTDS_Yes;
19122   Style.BreakConstructorInitializers = FormatStyle::BCIS_BeforeColon;
19123   verifyFormat("void Foo () requires (std::copyable<T>)\n"
19124                "{\n"
19125                "  return\n"
19126                "}\n",
19127                Style);
19128 
19129   verifyFormat("void Foo () requires std::copyable<T>\n"
19130                "{\n"
19131                "  return\n"
19132                "}\n",
19133                Style);
19134 
19135   verifyFormat("template <std::semiregular F, std::semiregular... Args>\n"
19136                "  requires (std::invocable<F, std::invoke_result_t<Args>...>)\n"
19137                "struct constant;",
19138                Style);
19139 
19140   verifyFormat("template <std::semiregular F, std::semiregular... Args>\n"
19141                "  requires std::invocable<F, std::invoke_result_t<Args>...>\n"
19142                "struct constant;",
19143                Style);
19144 
19145   verifyFormat("template <class T>\n"
19146                "class plane_with_very_very_very_long_name\n"
19147                "{\n"
19148                "  constexpr plane_with_very_very_very_long_name () requires "
19149                "std::copyable<T>\n"
19150                "      : plane_with_very_very_very_long_name (1)\n"
19151                "  {\n"
19152                "  }\n"
19153                "}\n",
19154                Style);
19155 
19156   verifyFormat("template <class T>\n"
19157                "class plane_with_long_name\n"
19158                "{\n"
19159                "  constexpr plane_with_long_name () requires std::copyable<T>\n"
19160                "      : plane_with_long_name (1)\n"
19161                "  {\n"
19162                "  }\n"
19163                "}\n",
19164                Style);
19165 
19166   Style.BreakBeforeConceptDeclarations = false;
19167   verifyFormat("template <typename T> concept Tree = true;", Style);
19168 
19169   Style.IndentRequires = false;
19170   verifyFormat("template <std::semiregular F, std::semiregular... Args>\n"
19171                "requires (std::invocable<F, std::invoke_result_t<Args>...>) "
19172                "struct constant;",
19173                Style);
19174 }
19175 
19176 TEST_F(FormatTest, StatementAttributeLikeMacros) {
19177   FormatStyle Style = getLLVMStyle();
19178   StringRef Source = "void Foo::slot() {\n"
19179                      "  unsigned char MyChar = 'x';\n"
19180                      "  emit signal(MyChar);\n"
19181                      "  Q_EMIT signal(MyChar);\n"
19182                      "}";
19183 
19184   EXPECT_EQ(Source, format(Source, Style));
19185 
19186   Style.AlignConsecutiveDeclarations = FormatStyle::ACS_Consecutive;
19187   EXPECT_EQ("void Foo::slot() {\n"
19188             "  unsigned char MyChar = 'x';\n"
19189             "  emit          signal(MyChar);\n"
19190             "  Q_EMIT signal(MyChar);\n"
19191             "}",
19192             format(Source, Style));
19193 
19194   Style.StatementAttributeLikeMacros.push_back("emit");
19195   EXPECT_EQ(Source, format(Source, Style));
19196 
19197   Style.StatementAttributeLikeMacros = {};
19198   EXPECT_EQ("void Foo::slot() {\n"
19199             "  unsigned char MyChar = 'x';\n"
19200             "  emit          signal(MyChar);\n"
19201             "  Q_EMIT        signal(MyChar);\n"
19202             "}",
19203             format(Source, Style));
19204 }
19205 
19206 TEST_F(FormatTest, IndentAccessModifiers) {
19207   FormatStyle Style = getLLVMStyle();
19208   Style.IndentAccessModifiers = true;
19209   // Members are *two* levels below the record;
19210   // Style.IndentWidth == 2, thus yielding a 4 spaces wide indentation.
19211   verifyFormat("class C {\n"
19212                "    int i;\n"
19213                "};\n",
19214                Style);
19215   verifyFormat("union C {\n"
19216                "    int i;\n"
19217                "    unsigned u;\n"
19218                "};\n",
19219                Style);
19220   // Access modifiers should be indented one level below the record.
19221   verifyFormat("class C {\n"
19222                "  public:\n"
19223                "    int i;\n"
19224                "};\n",
19225                Style);
19226   verifyFormat("struct S {\n"
19227                "  private:\n"
19228                "    class C {\n"
19229                "        int j;\n"
19230                "\n"
19231                "      public:\n"
19232                "        C();\n"
19233                "    };\n"
19234                "\n"
19235                "  public:\n"
19236                "    int i;\n"
19237                "};\n",
19238                Style);
19239   // Enumerations are not records and should be unaffected.
19240   Style.AllowShortEnumsOnASingleLine = false;
19241   verifyFormat("enum class E\n"
19242                "{\n"
19243                "  A,\n"
19244                "  B\n"
19245                "};\n",
19246                Style);
19247   // Test with a different indentation width;
19248   // also proves that the result is Style.AccessModifierOffset agnostic.
19249   Style.IndentWidth = 3;
19250   verifyFormat("class C {\n"
19251                "   public:\n"
19252                "      int i;\n"
19253                "};\n",
19254                Style);
19255 }
19256 
19257 TEST_F(FormatTest, LimitlessStringsAndComments) {
19258   auto Style = getLLVMStyleWithColumns(0);
19259   constexpr StringRef Code =
19260       "/**\n"
19261       " * This is a multiline comment with quite some long lines, at least for "
19262       "the LLVM Style.\n"
19263       " * We will redo this with strings and line comments. Just to  check if "
19264       "everything is working.\n"
19265       " */\n"
19266       "bool foo() {\n"
19267       "  /* Single line multi line comment. */\n"
19268       "  const std::string String = \"This is a multiline string with quite "
19269       "some long lines, at least for the LLVM Style.\"\n"
19270       "                             \"We already did it with multi line "
19271       "comments, and we will do it with line comments. Just to check if "
19272       "everything is working.\";\n"
19273       "  // This is a line comment (block) with quite some long lines, at "
19274       "least for the LLVM Style.\n"
19275       "  // We already did this with multi line comments and strings. Just to "
19276       "check if everything is working.\n"
19277       "  const std::string SmallString = \"Hello World\";\n"
19278       "  // Small line comment\n"
19279       "  return String.size() > SmallString.size();\n"
19280       "}";
19281   EXPECT_EQ(Code, format(Code, Style));
19282 }
19283 } // namespace
19284 } // namespace format
19285 } // namespace clang
19286