FormatTest.cpp revision e3f1197cad5cda243093e8b39caa43f13111de89 
1//===- unittest/Format/FormatTest.cpp - Formatting unit tests -------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#define DEBUG_TYPE "format-test"
11
12#include "clang/Format/Format.h"
13#include "clang/Lex/Lexer.h"
14#include "llvm/Support/Debug.h"
15#include "gtest/gtest.h"
16
17namespace clang {
18namespace format {
19
20class FormatTest : public ::testing::Test {
21protected:
22  std::string format(llvm::StringRef Code, unsigned Offset, unsigned Length,
23                     const FormatStyle &Style) {
24    DEBUG(llvm::errs() << "---\n");
25    std::vector<tooling::Range> Ranges(1, tooling::Range(Offset, Length));
26    tooling::Replacements Replaces = reformat(Style, Code, Ranges);
27    ReplacementCount = Replaces.size();
28    std::string Result = applyAllReplacements(Code, Replaces);
29    EXPECT_NE("", Result);
30    DEBUG(llvm::errs() << "\n" << Result << "\n\n");
31    return Result;
32  }
33
34  std::string
35  format(llvm::StringRef Code, const FormatStyle &Style = getLLVMStyle()) {
36    return format(Code, 0, Code.size(), Style);
37  }
38
39  std::string messUp(llvm::StringRef Code) {
40    std::string MessedUp(Code.str());
41    bool InComment = false;
42    bool InPreprocessorDirective = false;
43    bool JustReplacedNewline = false;
44    for (unsigned i = 0, e = MessedUp.size() - 1; i != e; ++i) {
45      if (MessedUp[i] == '/' && MessedUp[i + 1] == '/') {
46        if (JustReplacedNewline)
47          MessedUp[i - 1] = '\n';
48        InComment = true;
49      } else if (MessedUp[i] == '#' && (JustReplacedNewline || i == 0)) {
50        if (i != 0)
51          MessedUp[i - 1] = '\n';
52        InPreprocessorDirective = true;
53      } else if (MessedUp[i] == '\\' && MessedUp[i + 1] == '\n') {
54        MessedUp[i] = ' ';
55        MessedUp[i + 1] = ' ';
56      } else if (MessedUp[i] == '\n') {
57        if (InComment) {
58          InComment = false;
59        } else if (InPreprocessorDirective) {
60          InPreprocessorDirective = false;
61        } else {
62          JustReplacedNewline = true;
63          MessedUp[i] = ' ';
64        }
65      } else if (MessedUp[i] != ' ') {
66        JustReplacedNewline = false;
67      }
68    }
69    return MessedUp;
70  }
71
72  FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) {
73    FormatStyle Style = getLLVMStyle();
74    Style.ColumnLimit = ColumnLimit;
75    return Style;
76  }
77
78  FormatStyle getGoogleStyleWithColumns(unsigned ColumnLimit) {
79    FormatStyle Style = getGoogleStyle();
80    Style.ColumnLimit = ColumnLimit;
81    return Style;
82  }
83
84  void verifyFormat(llvm::StringRef Code,
85                    const FormatStyle &Style = getLLVMStyle()) {
86    EXPECT_EQ(Code.str(), format(messUp(Code), Style));
87  }
88
89  void verifyGoogleFormat(llvm::StringRef Code) {
90    verifyFormat(Code, getGoogleStyle());
91  }
92
93  void verifyIndependentOfContext(llvm::StringRef text) {
94    verifyFormat(text);
95    verifyFormat(llvm::Twine("void f() { " + text + " }").str());
96  }
97
98  int ReplacementCount;
99};
100
101TEST_F(FormatTest, MessUp) {
102  EXPECT_EQ("1 2 3", messUp("1 2 3"));
103  EXPECT_EQ("1 2 3\n", messUp("1\n2\n3\n"));
104  EXPECT_EQ("a\n//b\nc", messUp("a\n//b\nc"));
105  EXPECT_EQ("a\n#b\nc", messUp("a\n#b\nc"));
106  EXPECT_EQ("a\n#b  c  d\ne", messUp("a\n#b\\\nc\\\nd\ne"));
107}
108
109//===----------------------------------------------------------------------===//
110// Basic function tests.
111//===----------------------------------------------------------------------===//
112
113TEST_F(FormatTest, DoesNotChangeCorrectlyFormatedCode) {
114  EXPECT_EQ(";", format(";"));
115}
116
117TEST_F(FormatTest, FormatsGlobalStatementsAt0) {
118  EXPECT_EQ("int i;", format("  int i;"));
119  EXPECT_EQ("\nint i;", format(" \n\t \r  int i;"));
120  EXPECT_EQ("int i;\nint j;", format("    int i; int j;"));
121  EXPECT_EQ("int i;\nint j;", format("    int i;\n  int j;"));
122}
123
124TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) {
125  EXPECT_EQ("int i;", format("int\ni;"));
126}
127
128TEST_F(FormatTest, FormatsNestedBlockStatements) {
129  EXPECT_EQ("{\n  {\n    {}\n  }\n}", format("{{{}}}"));
130}
131
132TEST_F(FormatTest, FormatsNestedCall) {
133  verifyFormat("Method(f1, f2(f3));");
134  verifyFormat("Method(f1(f2, f3()));");
135  verifyFormat("Method(f1(f2, (f3())));");
136}
137
138TEST_F(FormatTest, NestedNameSpecifiers) {
139  verifyFormat("vector< ::Type> v;");
140  verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())");
141}
142
143TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) {
144  EXPECT_EQ("if (a) {\n"
145            "  f();\n"
146            "}",
147            format("if(a){f();}"));
148  EXPECT_EQ(4, ReplacementCount);
149  EXPECT_EQ("if (a) {\n"
150            "  f();\n"
151            "}",
152            format("if (a) {\n"
153                   "  f();\n"
154                   "}"));
155  EXPECT_EQ(0, ReplacementCount);
156}
157
158TEST_F(FormatTest, RemovesTrailingWhitespaceOfFormattedLine) {
159  EXPECT_EQ("int a;\nint b;", format("int a; \nint b;", 0, 0, getLLVMStyle()));
160  EXPECT_EQ("int a;", format("int a;         "));
161  EXPECT_EQ("int a;\n", format("int a;  \n   \n   \n "));
162  EXPECT_EQ("int a;\nint b;    ",
163            format("int a;  \nint b;    ", 0, 0, getLLVMStyle()));
164}
165
166TEST_F(FormatTest, FormatsCorrectRegionForLeadingWhitespace) {
167  EXPECT_EQ("int b;\nint a;",
168            format("int b;\n   int a;", 7, 0, getLLVMStyle()));
169  EXPECT_EQ("int b;\n   int a;",
170            format("int b;\n   int a;", 6, 0, getLLVMStyle()));
171
172  EXPECT_EQ("#define A  \\\n"
173            "  int a;   \\\n"
174            "  int b;",
175            format("#define A  \\\n"
176                   "  int a;   \\\n"
177                   "    int b;",
178                   26, 0, getLLVMStyleWithColumns(12)));
179  EXPECT_EQ("#define A  \\\n"
180            "  int a;   \\\n"
181            "    int b;",
182            format("#define A  \\\n"
183                   "  int a;   \\\n"
184                   "    int b;",
185                   25, 0, getLLVMStyleWithColumns(12)));
186}
187
188TEST_F(FormatTest, RemovesWhitespaceWhenTriggeredOnEmptyLine) {
189  EXPECT_EQ("int  a;\n\n int b;",
190            format("int  a;\n  \n\n int b;", 7, 0, getLLVMStyle()));
191  EXPECT_EQ("int  a;\n\n int b;",
192            format("int  a;\n  \n\n int b;", 9, 0, getLLVMStyle()));
193}
194
195TEST_F(FormatTest, RemovesEmptyLines) {
196  EXPECT_EQ("class C {\n"
197            "  int i;\n"
198            "};",
199            format("class C {\n"
200                   " int i;\n"
201                   "\n"
202                   "};"));
203
204  // Don't remove empty lines in more complex control statements.
205  EXPECT_EQ("void f() {\n"
206            "  if (a) {\n"
207            "    f();\n"
208            "\n"
209            "  } else if (b) {\n"
210            "    f();\n"
211            "  }\n"
212            "}",
213            format("void f() {\n"
214                   "  if (a) {\n"
215                   "    f();\n"
216                   "\n"
217                   "  } else if (b) {\n"
218                   "    f();\n"
219                   "\n"
220                   "  }\n"
221                   "\n"
222                   "}"));
223
224  // FIXME: This is slightly inconsistent.
225  EXPECT_EQ("namespace {\n"
226            "int i;\n"
227            "}",
228            format("namespace {\n"
229                   "int i;\n"
230                   "\n"
231                   "}"));
232  EXPECT_EQ("namespace {\n"
233            "int i;\n"
234            "\n"
235            "} // namespace",
236            format("namespace {\n"
237                   "int i;\n"
238                   "\n"
239                   "}  // namespace"));
240}
241
242TEST_F(FormatTest, ReformatsMovedLines) {
243  EXPECT_EQ(
244      "template <typename T> T *getFETokenInfo() const {\n"
245      "  return static_cast<T *>(FETokenInfo);\n"
246      "}\n"
247      "  int a; // <- Should not be formatted",
248      format(
249          "template<typename T>\n"
250          "T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }\n"
251          "  int a; // <- Should not be formatted",
252          9, 5, getLLVMStyle()));
253}
254
255//===----------------------------------------------------------------------===//
256// Tests for control statements.
257//===----------------------------------------------------------------------===//
258
259TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
260  verifyFormat("if (true)\n  f();\ng();");
261  verifyFormat("if (a)\n  if (b)\n    if (c)\n      g();\nh();");
262  verifyFormat("if (a)\n  if (b) {\n    f();\n  }\ng();");
263
264  FormatStyle AllowsMergedIf = getLLVMStyle();
265  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
266  verifyFormat("if (a)\n"
267               "  // comment\n"
268               "  f();",
269               AllowsMergedIf);
270  verifyFormat("if (a)\n"
271               "  ;",
272               AllowsMergedIf);
273  verifyFormat("if (a)\n"
274               "  if (b) return;",
275               AllowsMergedIf);
276
277  verifyFormat("if (a) // Can't merge this\n"
278               "  f();\n",
279               AllowsMergedIf);
280  verifyFormat("if (a) /* still don't merge */\n"
281               "  f();",
282               AllowsMergedIf);
283  verifyFormat("if (a) { // Never merge this\n"
284               "  f();\n"
285               "}",
286               AllowsMergedIf);
287  verifyFormat("if (a) { /* Never merge this */\n"
288               "  f();\n"
289               "}",
290               AllowsMergedIf);
291
292  EXPECT_EQ("if (a) return;", format("if(a)\nreturn;", 7, 1, AllowsMergedIf));
293  EXPECT_EQ("if (a) return; // comment",
294            format("if(a)\nreturn; // comment", 20, 1, AllowsMergedIf));
295
296  AllowsMergedIf.ColumnLimit = 14;
297  verifyFormat("if (a) return;", AllowsMergedIf);
298  verifyFormat("if (aaaaaaaaa)\n"
299               "  return;",
300               AllowsMergedIf);
301
302  AllowsMergedIf.ColumnLimit = 13;
303  verifyFormat("if (a)\n  return;", AllowsMergedIf);
304}
305
306TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) {
307  FormatStyle AllowsMergedLoops = getLLVMStyle();
308  AllowsMergedLoops.AllowShortLoopsOnASingleLine = true;
309  verifyFormat("while (true) continue;", AllowsMergedLoops);
310  verifyFormat("for (;;) continue;", AllowsMergedLoops);
311  verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops);
312  verifyFormat("while (true)\n"
313               "  ;",
314               AllowsMergedLoops);
315  verifyFormat("for (;;)\n"
316               "  ;",
317               AllowsMergedLoops);
318  verifyFormat("for (;;)\n"
319               "  for (;;) continue;",
320               AllowsMergedLoops);
321  verifyFormat("for (;;) // Can't merge this\n"
322               "  continue;",
323               AllowsMergedLoops);
324  verifyFormat("for (;;) /* still don't merge */\n"
325               "  continue;",
326               AllowsMergedLoops);
327}
328
329TEST_F(FormatTest, ParseIfElse) {
330  verifyFormat("if (true)\n"
331               "  if (true)\n"
332               "    if (true)\n"
333               "      f();\n"
334               "    else\n"
335               "      g();\n"
336               "  else\n"
337               "    h();\n"
338               "else\n"
339               "  i();");
340  verifyFormat("if (true)\n"
341               "  if (true)\n"
342               "    if (true) {\n"
343               "      if (true)\n"
344               "        f();\n"
345               "    } else {\n"
346               "      g();\n"
347               "    }\n"
348               "  else\n"
349               "    h();\n"
350               "else {\n"
351               "  i();\n"
352               "}");
353}
354
355TEST_F(FormatTest, ElseIf) {
356  verifyFormat("if (a) {\n} else if (b) {\n}");
357  verifyFormat("if (a)\n"
358               "  f();\n"
359               "else if (b)\n"
360               "  g();\n"
361               "else\n"
362               "  h();");
363}
364
365TEST_F(FormatTest, FormatsForLoop) {
366  verifyFormat(
367      "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n"
368      "     ++VeryVeryLongLoopVariable)\n"
369      "  ;");
370  verifyFormat("for (;;)\n"
371               "  f();");
372  verifyFormat("for (;;) {\n}");
373  verifyFormat("for (;;) {\n"
374               "  f();\n"
375               "}");
376  verifyFormat("for (int i = 0; (i < 10); ++i) {\n}");
377
378  verifyFormat(
379      "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
380      "                                          E = UnwrappedLines.end();\n"
381      "     I != E; ++I) {\n}");
382
383  verifyFormat(
384      "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n"
385      "     ++IIIII) {\n}");
386  verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n"
387               "         aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n"
388               "     aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}");
389  verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n"
390               "         I = FD->getDeclsInPrototypeScope().begin(),\n"
391               "         E = FD->getDeclsInPrototypeScope().end();\n"
392               "     I != E; ++I) {\n}");
393
394  // FIXME: Not sure whether we want extra identation in line 3 here:
395  verifyFormat(
396      "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
397      "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n"
398      "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
399      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
400      "     ++aaaaaaaaaaa) {\n}");
401  verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n"
402               "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
403               "}");
404  verifyFormat("for (some_namespace::SomeIterator iter( // force break\n"
405               "         aaaaaaaaaa);\n"
406               "     iter; ++iter) {\n"
407               "}");
408
409  FormatStyle NoBinPacking = getLLVMStyle();
410  NoBinPacking.BinPackParameters = false;
411  verifyFormat("for (int aaaaaaaaaaa = 1;\n"
412               "     aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n"
413               "                                           aaaaaaaaaaaaaaaa,\n"
414               "                                           aaaaaaaaaaaaaaaa,\n"
415               "                                           aaaaaaaaaaaaaaaa);\n"
416               "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
417               "}",
418               NoBinPacking);
419  verifyFormat(
420      "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
421      "                                          E = UnwrappedLines.end();\n"
422      "     I != E;\n"
423      "     ++I) {\n}",
424      NoBinPacking);
425}
426
427TEST_F(FormatTest, RangeBasedForLoops) {
428  verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
429               "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
430  verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n"
431               "     aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}");
432  verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n"
433               "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
434}
435
436TEST_F(FormatTest, FormatsWhileLoop) {
437  verifyFormat("while (true) {\n}");
438  verifyFormat("while (true)\n"
439               "  f();");
440  verifyFormat("while () {\n}");
441  verifyFormat("while () {\n"
442               "  f();\n"
443               "}");
444}
445
446TEST_F(FormatTest, FormatsDoWhile) {
447  verifyFormat("do {\n"
448               "  do_something();\n"
449               "} while (something());");
450  verifyFormat("do\n"
451               "  do_something();\n"
452               "while (something());");
453}
454
455TEST_F(FormatTest, FormatsSwitchStatement) {
456  verifyFormat("switch (x) {\n"
457               "case 1:\n"
458               "  f();\n"
459               "  break;\n"
460               "case kFoo:\n"
461               "case ns::kBar:\n"
462               "case kBaz:\n"
463               "  break;\n"
464               "default:\n"
465               "  g();\n"
466               "  break;\n"
467               "}");
468  verifyFormat("switch (x) {\n"
469               "case 1: {\n"
470               "  f();\n"
471               "  break;\n"
472               "}\n"
473               "}");
474  verifyFormat("switch (x) {\n"
475               "case 1: {\n"
476               "  f();\n"
477               "  {\n"
478               "    g();\n"
479               "    h();\n"
480               "  }\n"
481               "  break;\n"
482               "}\n"
483               "}");
484  verifyFormat("switch (x) {\n"
485               "case 1: {\n"
486               "  f();\n"
487               "  if (foo) {\n"
488               "    g();\n"
489               "    h();\n"
490               "  }\n"
491               "  break;\n"
492               "}\n"
493               "}");
494  verifyFormat("switch (x) {\n"
495               "case 1: {\n"
496               "  f();\n"
497               "  g();\n"
498               "} break;\n"
499               "}");
500  verifyFormat("switch (test)\n"
501               "  ;");
502  verifyFormat("switch (x) {\n"
503               "default: {\n"
504               "  // Do nothing.\n"
505               "}\n"
506               "}");
507  verifyFormat("switch (x) {\n"
508               "// comment\n"
509               "// if 1, do f()\n"
510               "case 1:\n"
511               "  f();\n"
512               "}");
513  verifyFormat("switch (x) {\n"
514               "case 1:\n"
515               "  // Do amazing stuff\n"
516               "  {\n"
517               "    f();\n"
518               "    g();\n"
519               "  }\n"
520               "  break;\n"
521               "}");
522  verifyFormat("#define A          \\\n"
523               "  switch (x) {     \\\n"
524               "  case a:          \\\n"
525               "    foo = b;       \\\n"
526               "  }", getLLVMStyleWithColumns(20));
527
528  verifyGoogleFormat("switch (x) {\n"
529                     "  case 1:\n"
530                     "    f();\n"
531                     "    break;\n"
532                     "  case kFoo:\n"
533                     "  case ns::kBar:\n"
534                     "  case kBaz:\n"
535                     "    break;\n"
536                     "  default:\n"
537                     "    g();\n"
538                     "    break;\n"
539                     "}");
540  verifyGoogleFormat("switch (x) {\n"
541                     "  case 1: {\n"
542                     "    f();\n"
543                     "    break;\n"
544                     "  }\n"
545                     "}");
546  verifyGoogleFormat("switch (test)\n"
547                     "    ;");
548}
549
550TEST_F(FormatTest, FormatsLabels) {
551  verifyFormat("void f() {\n"
552               "  some_code();\n"
553               "test_label:\n"
554               "  some_other_code();\n"
555               "  {\n"
556               "    some_more_code();\n"
557               "  another_label:\n"
558               "    some_more_code();\n"
559               "  }\n"
560               "}");
561  verifyFormat("some_code();\n"
562               "test_label:\n"
563               "some_other_code();");
564}
565
566//===----------------------------------------------------------------------===//
567// Tests for comments.
568//===----------------------------------------------------------------------===//
569
570TEST_F(FormatTest, UnderstandsSingleLineComments) {
571  verifyFormat("//* */");
572  verifyFormat("// line 1\n"
573               "// line 2\n"
574               "void f() {}\n");
575
576  verifyFormat("void f() {\n"
577               "  // Doesn't do anything\n"
578               "}");
579  verifyFormat("void f(int i,  // some comment (probably for i)\n"
580               "       int j,  // some comment (probably for j)\n"
581               "       int k); // some comment (probably for k)");
582  verifyFormat("void f(int i,\n"
583               "       // some comment (probably for j)\n"
584               "       int j,\n"
585               "       // some comment (probably for k)\n"
586               "       int k);");
587
588  verifyFormat("int i    // This is a fancy variable\n"
589               "    = 5; // with nicely aligned comment.");
590
591  verifyFormat("// Leading comment.\n"
592               "int a; // Trailing comment.");
593  verifyFormat("int a; // Trailing comment\n"
594               "       // on 2\n"
595               "       // or 3 lines.\n"
596               "int b;");
597  verifyFormat("int a; // Trailing comment\n"
598               "\n"
599               "// Leading comment.\n"
600               "int b;");
601  verifyFormat("int a;    // Comment.\n"
602               "          // More details.\n"
603               "int bbbb; // Another comment.");
604  verifyFormat(
605      "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
606      "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;   // comment\n"
607      "int cccccccccccccccccccccccccccccc;       // comment\n"
608      "int ddd;                     // looooooooooooooooooooooooong comment\n"
609      "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
610      "int bbbbbbbbbbbbbbbbbbbbb;   // comment\n"
611      "int ccccccccccccccccccc;     // comment");
612
613  verifyFormat("#include \"a\"     // comment\n"
614               "#include \"a/b/c\" // comment");
615  verifyFormat("#include <a>     // comment\n"
616               "#include <a/b/c> // comment");
617  EXPECT_EQ("#include \\\n"
618            "  \"a\"            // comment\n"
619            "#include \"a/b/c\" // comment",
620            format("#include \\\n"
621                   "  \"a\" // comment\n"
622                   "#include \"a/b/c\" // comment"));
623
624  verifyFormat("enum E {\n"
625               "  // comment\n"
626               "  VAL_A, // comment\n"
627               "  VAL_B\n"
628               "};");
629
630  verifyFormat(
631      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
632      "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment");
633  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
634               "    // Comment inside a statement.\n"
635               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
636  verifyFormat(
637      "bool aaaaaaaaaaaaa = // comment\n"
638      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
639      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
640
641  verifyFormat("int aaaa; // aaaaa\n"
642               "int aa;   // aaaaaaa",
643               getLLVMStyleWithColumns(20));
644
645  EXPECT_EQ("void f() { // This does something ..\n"
646            "}\n"
647            "int a; // This is unrelated",
648            format("void f()    {     // This does something ..\n"
649                   "  }\n"
650                   "int   a;     // This is unrelated"));
651  EXPECT_EQ("void f() { // This does something ..\n"
652            "}          // awesome..\n"
653            "\n"
654            "int a; // This is unrelated",
655            format("void f()    { // This does something ..\n"
656                   "      } // awesome..\n"
657                   " \n"
658                   "int a;    // This is unrelated"));
659
660  EXPECT_EQ("int i; // single line trailing comment",
661            format("int i;\\\n// single line trailing comment"));
662
663  verifyGoogleFormat("int a;  // Trailing comment.");
664
665  verifyFormat("someFunction(anotherFunction( // Force break.\n"
666               "    parameter));");
667
668  verifyGoogleFormat("#endif  // HEADER_GUARD");
669
670  verifyFormat("const char *test[] = {\n"
671               "  // A\n"
672               "  \"aaaa\",\n"
673               "  // B\n"
674               "  \"aaaaa\",\n"
675               "};");
676  verifyGoogleFormat(
677      "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
678      "    aaaaaaaaaaaaaaaaaaaaaa);  // 81_cols_with_this_comment");
679  EXPECT_EQ("D(a, {\n"
680            "  // test\n"
681            "  int a;\n"
682            "});",
683            format("D(a, {\n"
684                   "// test\n"
685                   "int a;\n"
686                   "});"));
687
688  EXPECT_EQ("lineWith(); // comment\n"
689            "// at start\n"
690            "otherLine();",
691            format("lineWith();   // comment\n"
692                   "// at start\n"
693                   "otherLine();"));
694  EXPECT_EQ("lineWith(); // comment\n"
695            "            // at start\n"
696            "otherLine();",
697            format("lineWith();   // comment\n"
698                   " // at start\n"
699                   "otherLine();"));
700
701  EXPECT_EQ("lineWith(); // comment\n"
702            "// at start\n"
703            "otherLine(); // comment",
704            format("lineWith();   // comment\n"
705                   "// at start\n"
706                   "otherLine();   // comment"));
707  EXPECT_EQ("lineWith();\n"
708            "// at start\n"
709            "otherLine(); // comment",
710            format("lineWith();\n"
711                   " // at start\n"
712                   "otherLine();   // comment"));
713  EXPECT_EQ("// first\n"
714            "// at start\n"
715            "otherLine(); // comment",
716            format("// first\n"
717                   " // at start\n"
718                   "otherLine();   // comment"));
719  EXPECT_EQ("f();\n"
720            "// first\n"
721            "// at start\n"
722            "otherLine(); // comment",
723            format("f();\n"
724                   "// first\n"
725                   " // at start\n"
726                   "otherLine();   // comment"));
727}
728
729TEST_F(FormatTest, CanFormatCommentsLocally) {
730  EXPECT_EQ("int a;    // comment\n"
731            "int    b; // comment",
732            format("int   a; // comment\n"
733                   "int    b; // comment",
734                   0, 0, getLLVMStyle()));
735  EXPECT_EQ("int   a; // comment\n"
736            "         // line 2\n"
737            "int b;",
738            format("int   a; // comment\n"
739                   "            // line 2\n"
740                   "int b;",
741                   28, 0, getLLVMStyle()));
742  EXPECT_EQ("int aaaaaa; // comment\n"
743            "int b;\n"
744            "int c; // unrelated comment",
745            format("int aaaaaa; // comment\n"
746                   "int b;\n"
747                   "int   c; // unrelated comment",
748                   31, 0, getLLVMStyle()));
749}
750
751TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) {
752  EXPECT_EQ("// comment", format("// comment  "));
753  EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment",
754            format("int aaaaaaa, bbbbbbb; // comment                   ",
755                   getLLVMStyleWithColumns(33)));
756}
757
758TEST_F(FormatTest, UnderstandsMultiLineComments) {
759  verifyFormat("f(/*test=*/ true);");
760  EXPECT_EQ(
761      "f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n"
762      "  bbbbbbbbbbbbbbbbbbbbbbbbb);",
763      format("f(aaaaaaaaaaaaaaaaaaaaaaaaa ,   \\\n/* Trailing comment for aa... */\n"
764             "  bbbbbbbbbbbbbbbbbbbbbbbbb);"));
765  EXPECT_EQ(
766      "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
767      "  /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);",
768      format("f(aaaaaaaaaaaaaaaaaaaaaaaaa    ,   \n"
769             "/* Leading comment for bb... */   bbbbbbbbbbbbbbbbbbbbbbbbb);"));
770  EXPECT_EQ(
771      "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
772      "    aaaaaaaaaaaaaaaaaa,\n"
773      "    aaaaaaaaaaaaaaaaaa) { /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaa */\n"
774      "}",
775      format("void      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
776             "                      aaaaaaaaaaaaaaaaaa  ,\n"
777             "    aaaaaaaaaaaaaaaaaa) {   /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaa */\n"
778             "}"));
779
780  FormatStyle NoBinPacking = getLLVMStyle();
781  NoBinPacking.BinPackParameters = false;
782  verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n"
783               "         /* parameter 2 */ aaaaaa,\n"
784               "         /* parameter 3 */ aaaaaa,\n"
785               "         /* parameter 4 */ aaaaaa);",
786               NoBinPacking);
787}
788
789TEST_F(FormatTest, AlignsMultiLineComments) {
790  EXPECT_EQ("/*\n"
791            " * Really multi-line\n"
792            " * comment.\n"
793            " */\n"
794            "void f() {}",
795            format("  /*\n"
796                   "   * Really multi-line\n"
797                   "   * comment.\n"
798                   "   */\n"
799                   "  void f() {}"));
800  EXPECT_EQ("class C {\n"
801            "  /*\n"
802            "   * Another multi-line\n"
803            "   * comment.\n"
804            "   */\n"
805            "  void f() {}\n"
806            "};",
807            format("class C {\n"
808                   "/*\n"
809                   " * Another multi-line\n"
810                   " * comment.\n"
811                   " */\n"
812                   "void f() {}\n"
813                   "};"));
814  EXPECT_EQ("/*\n"
815            "  1. This is a comment with non-trivial formatting.\n"
816            "     1.1. We have to indent/outdent all lines equally\n"
817            "         1.1.1. to keep the formatting.\n"
818            " */",
819            format("  /*\n"
820                   "    1. This is a comment with non-trivial formatting.\n"
821                   "       1.1. We have to indent/outdent all lines equally\n"
822                   "           1.1.1. to keep the formatting.\n"
823                   "   */"));
824  EXPECT_EQ("/*\n"
825            "Don't try to outdent if there's not enough inentation.\n"
826            "*/",
827            format("  /*\n"
828                   " Don't try to outdent if there's not enough inentation.\n"
829                   " */"));
830
831  EXPECT_EQ("int i; /* Comment with empty...\n"
832            "        *\n"
833            "        * line. */",
834            format("int i; /* Comment with empty...\n"
835                   "        *\n"
836                   "        * line. */"));
837}
838
839TEST_F(FormatTest, SplitsLongCxxComments) {
840  EXPECT_EQ("// A comment that\n"
841            "// doesn't fit on\n"
842            "// one line",
843            format("// A comment that doesn't fit on one line",
844                   getLLVMStyleWithColumns(20)));
845  EXPECT_EQ("// a b c d\n"
846            "// e f  g\n"
847            "// h i j k",
848            format("// a b c d e f  g h i j k",
849                   getLLVMStyleWithColumns(10)));
850  EXPECT_EQ("// a b c d\n"
851            "// e f  g\n"
852            "// h i j k",
853            format("\\\n// a b c d e f  g h i j k",
854                   getLLVMStyleWithColumns(10)));
855  EXPECT_EQ("if (true) // A comment that\n"
856            "          // doesn't fit on\n"
857            "          // one line",
858            format("if (true) // A comment that doesn't fit on one line   ",
859                   getLLVMStyleWithColumns(30)));
860  EXPECT_EQ("//    Don't_touch_leading_whitespace",
861            format("//    Don't_touch_leading_whitespace",
862                   getLLVMStyleWithColumns(20)));
863  EXPECT_EQ("// Add leading\n"
864            "// whitespace",
865            format("//Add leading whitespace", getLLVMStyleWithColumns(20)));
866  EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle()));
867  EXPECT_EQ("// Even if it makes the line exceed the column\n"
868            "// limit",
869            format("//Even if it makes the line exceed the column limit",
870                   getLLVMStyleWithColumns(51)));
871  EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle()));
872  EXPECT_EQ("// A comment before\n"
873            "// a macro\n"
874            "// definition\n"
875            "#define a b",
876            format("// A comment before a macro definition\n"
877                   "#define a b",
878                   getLLVMStyleWithColumns(20)));
879}
880
881TEST_F(FormatTest, PriorityOfCommentBreaking) {
882  EXPECT_EQ("if (xxx == yyy && // aaaaaaaaaaaa\n"
883            "                  // bbbbbbbbb\n"
884            "    zzz)\n"
885            "  q();",
886            format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n"
887                   "    zzz) q();",
888                   getLLVMStyleWithColumns(40)));
889  EXPECT_EQ("if (xxxxxxxxxx ==\n"
890            "        yyy && // aaaaaa bbbbbbbb cccc\n"
891            "    zzz)\n"
892            "  q();",
893            format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n"
894                   "    zzz) q();",
895                   getLLVMStyleWithColumns(40)));
896  EXPECT_EQ("if (xxxxxxxxxx &&\n"
897            "        yyy || // aaaaaa bbbbbbbb cccc\n"
898            "    zzz)\n"
899            "  q();",
900            format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n"
901                   "    zzz) q();",
902                   getLLVMStyleWithColumns(40)));
903  EXPECT_EQ("fffffffff(&xxx, // aaaaaaaaaaaa\n"
904            "                // bbbbbbbbbbb\n"
905            "          zzz);",
906            format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n"
907                   " zzz);",
908                   getLLVMStyleWithColumns(40)));
909}
910
911TEST_F(FormatTest, MultiLineCommentsInDefines) {
912  // FIXME: The line breaks are still suboptimal (current guess
913  // is that this is due to the token length being misused), but
914  // the comment handling is correct.
915  EXPECT_EQ("#define A(      \\\n"
916            "    x) /*       \\\n"
917            "a comment       \\\n"
918            "inside */       \\\n"
919            "  f();",
920            format("#define A(x) /* \\\n"
921                   "  a comment     \\\n"
922                   "  inside */     \\\n"
923                   "  f();",
924                   getLLVMStyleWithColumns(17)));
925  EXPECT_EQ("#define A(x) /* \\\n"
926            "        a       \\\n"
927            "        comment \\\n"
928            "        inside  \\\n"
929            "        */      \\\n"
930            "  f();",
931            format("#define A(      \\\n"
932                   "    x) /*       \\\n"
933                   "  a comment     \\\n"
934                   "  inside */     \\\n"
935                   "  f();",
936                   getLLVMStyleWithColumns(17)));
937}
938
939TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) {
940  EXPECT_EQ("namespace {}\n// Test\n#define A",
941            format("namespace {}\n   // Test\n#define A"));
942  EXPECT_EQ("namespace {}\n/* Test */\n#define A",
943            format("namespace {}\n   /* Test */\n#define A"));
944  EXPECT_EQ("namespace {}\n/* Test */ #define A",
945            format("namespace {}\n   /* Test */    #define A"));
946}
947
948TEST_F(FormatTest, SplitsLongLinesInComments) {
949  EXPECT_EQ("/* This is a long\n"
950            " * comment that\n"
951            " * doesn't\n"
952            " * fit on one line.\n"
953            " */",
954            format("/* "
955                   "This is a long                                         "
956                   "comment that "
957                   "doesn't                                    "
958                   "fit on one line.  */",
959                   getLLVMStyleWithColumns(20)));
960  EXPECT_EQ("/* a b c d\n"
961            " * e f  g\n"
962            " * h i j k\n"
963            " */",
964            format("/* a b c d e f  g h i j k */",
965                   getLLVMStyleWithColumns(10)));
966  EXPECT_EQ("/* a b c d\n"
967            " * e f  g\n"
968            " * h i j k\n"
969            " */",
970            format("\\\n/* a b c d e f  g h i j k */",
971                   getLLVMStyleWithColumns(10)));
972  EXPECT_EQ("/*\n"
973            "This is a long\n"
974            "comment that doesn't\n"
975            "fit on one line.\n"
976            "*/",
977            format("/*\n"
978                   "This is a long                                         "
979                   "comment that doesn't                                    "
980                   "fit on one line.                                      \n"
981                   "*/", getLLVMStyleWithColumns(20)));
982  EXPECT_EQ("/*\n"
983            " * This is a long\n"
984            " * comment that\n"
985            " * doesn't fit on\n"
986            " * one line.\n"
987            " */",
988            format("/*      \n"
989                   " * This is a long "
990                   "   comment that     "
991                   "   doesn't fit on   "
992                   "   one line.                                            \n"
993                   " */", getLLVMStyleWithColumns(20)));
994  EXPECT_EQ("/*\n"
995            " * This_is_a_comment_with_words_that_dont_fit_on_one_line\n"
996            " * so_it_should_be_broken\n"
997            " * wherever_a_space_occurs\n"
998            " */",
999            format("/*\n"
1000                   " * This_is_a_comment_with_words_that_dont_fit_on_one_line "
1001                   "   so_it_should_be_broken "
1002                   "   wherever_a_space_occurs                             \n"
1003                   " */",
1004                   getLLVMStyleWithColumns(20)));
1005  EXPECT_EQ("/*\n"
1006            " *    This_comment_can_not_be_broken_into_lines\n"
1007            " */",
1008            format("/*\n"
1009                   " *    This_comment_can_not_be_broken_into_lines\n"
1010                   " */",
1011                   getLLVMStyleWithColumns(20)));
1012  EXPECT_EQ("{\n"
1013            "  /*\n"
1014            "  This is another\n"
1015            "  long comment that\n"
1016            "  doesn't fit on one\n"
1017            "  line    1234567890\n"
1018            "  */\n"
1019            "}",
1020            format("{\n"
1021                   "/*\n"
1022                   "This is another     "
1023                   "  long comment that "
1024                   "  doesn't fit on one"
1025                   "  line    1234567890\n"
1026                   "*/\n"
1027                   "}", getLLVMStyleWithColumns(20)));
1028  EXPECT_EQ("{\n"
1029            "  /*\n"
1030            "   * This        i s\n"
1031            "   * another comment\n"
1032            "   * t hat  doesn' t\n"
1033            "   * fit on one l i\n"
1034            "   * n e\n"
1035            "   */\n"
1036            "}",
1037            format("{\n"
1038                   "/*\n"
1039                   " * This        i s"
1040                   "   another comment"
1041                   "   t hat  doesn' t"
1042                   "   fit on one l i"
1043                   "   n e\n"
1044                   " */\n"
1045                   "}", getLLVMStyleWithColumns(20)));
1046  EXPECT_EQ("/*\n"
1047            " * This is a long\n"
1048            " * comment that\n"
1049            " * doesn't fit on\n"
1050            " * one line\n"
1051            " */",
1052            format("   /*\n"
1053                   "    * This is a long comment that doesn't fit on one line\n"
1054                   "    */", getLLVMStyleWithColumns(20)));
1055  EXPECT_EQ("{\n"
1056            "  if (something) /* This is a\n"
1057            "                    long\n"
1058            "                    comment */\n"
1059            "    ;\n"
1060            "}",
1061            format("{\n"
1062                   "  if (something) /* This is a long comment */\n"
1063                   "    ;\n"
1064                   "}",
1065                   getLLVMStyleWithColumns(30)));
1066
1067  EXPECT_EQ("/* A comment before\n"
1068            " * a macro\n"
1069            " * definition */\n"
1070            "#define a b",
1071            format("/* A comment before a macro definition */\n"
1072                   "#define a b",
1073                   getLLVMStyleWithColumns(20)));
1074
1075  EXPECT_EQ("/* some comment\n"
1076            "     *   a comment\n"
1077            "* that we break\n"
1078            " * another comment\n"
1079            "* we have to break\n"
1080            "* a left comment\n"
1081            " */",
1082            format("  /* some comment\n"
1083                   "       *   a comment that we break\n"
1084                   "   * another comment we have to break\n"
1085                   "* a left comment\n"
1086                   "   */",
1087                   getLLVMStyleWithColumns(20)));
1088
1089  EXPECT_EQ("/*\n"
1090            "\n"
1091            "\n"
1092            "    */\n",
1093            format("  /*       \n"
1094                   "      \n"
1095                   "               \n"
1096                   "      */\n"));
1097}
1098
1099TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) {
1100  EXPECT_EQ("#define X          \\\n"
1101            "  /*               \\\n"
1102            "   Test            \\\n"
1103            "   Macro comment   \\\n"
1104            "   with a long     \\\n"
1105            "   line            \\\n"
1106            "   */              \\\n"
1107            "  A + B",
1108            format("#define X \\\n"
1109                   "  /*\n"
1110                   "   Test\n"
1111                   "   Macro comment with a long  line\n"
1112                   "   */ \\\n"
1113                   "  A + B",
1114                   getLLVMStyleWithColumns(20)));
1115  EXPECT_EQ("#define X          \\\n"
1116            "  /* Macro comment \\\n"
1117            "     with a long   \\\n"
1118            "     line */       \\\n"
1119            "  A + B",
1120            format("#define X \\\n"
1121                   "  /* Macro comment with a long\n"
1122                   "     line */ \\\n"
1123                   "  A + B",
1124                   getLLVMStyleWithColumns(20)));
1125  EXPECT_EQ("#define X          \\\n"
1126            "  /* Macro comment \\\n"
1127            "   * with a long   \\\n"
1128            "   * line */       \\\n"
1129            "  A + B",
1130            format("#define X \\\n"
1131                   "  /* Macro comment with a long  line */ \\\n"
1132                   "  A + B",
1133                   getLLVMStyleWithColumns(20)));
1134}
1135
1136TEST_F(FormatTest, CommentsInStaticInitializers) {
1137  EXPECT_EQ(
1138      "static SomeType type = { aaaaaaaaaaaaaaaaaaaa, /* comment */\n"
1139      "                         aaaaaaaaaaaaaaaaaaaa /* comment */,\n"
1140      "                         /* comment */ aaaaaaaaaaaaaaaaaaaa,\n"
1141      "                         aaaaaaaaaaaaaaaaaaaa, // comment\n"
1142      "                         aaaaaaaaaaaaaaaaaaaa };",
1143      format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa  ,  /* comment */\n"
1144             "                   aaaaaaaaaaaaaaaaaaaa   /* comment */ ,\n"
1145             "                     /* comment */   aaaaaaaaaaaaaaaaaaaa ,\n"
1146             "              aaaaaaaaaaaaaaaaaaaa ,   // comment\n"
1147             "                  aaaaaaaaaaaaaaaaaaaa };"));
1148  verifyFormat("static SomeType type = { aaaaaaaaaaa, // comment for aa...\n"
1149               "                         bbbbbbbbbbb, ccccccccccc };");
1150  verifyFormat("static SomeType type = { aaaaaaaaaaa,\n"
1151               "                         // comment for bb....\n"
1152               "                         bbbbbbbbbbb, ccccccccccc };");
1153  verifyGoogleFormat(
1154      "static SomeType type = {aaaaaaaaaaa,  // comment for aa...\n"
1155      "                        bbbbbbbbbbb, ccccccccccc};");
1156  verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n"
1157                     "                        // comment for bb....\n"
1158                     "                        bbbbbbbbbbb, ccccccccccc};");
1159
1160  verifyFormat("S s = { { a, b, c },   // Group #1\n"
1161               "        { d, e, f },   // Group #2\n"
1162               "        { g, h, i } }; // Group #3");
1163  verifyFormat("S s = { { // Group #1\n"
1164               "          a, b, c },\n"
1165               "        { // Group #2\n"
1166               "          d, e, f },\n"
1167               "        { // Group #3\n"
1168               "          g, h, i } };");
1169
1170  EXPECT_EQ("S s = {\n"
1171            "  // Some comment\n"
1172            "  a,\n"
1173            "\n"
1174            "  // Comment after empty line\n"
1175            "  b\n"
1176            "}",
1177            format("S s =    {\n"
1178                   "      // Some comment\n"
1179                   "  a,\n"
1180                   "  \n"
1181                   "     // Comment after empty line\n"
1182                   "      b\n"
1183                   "}"));
1184  EXPECT_EQ("S s = {\n"
1185            "  /* Some comment */\n"
1186            "  a,\n"
1187            "\n"
1188            "  /* Comment after empty line */\n"
1189            "  b\n"
1190            "}",
1191            format("S s =    {\n"
1192                   "      /* Some comment */\n"
1193                   "  a,\n"
1194                   "  \n"
1195                   "     /* Comment after empty line */\n"
1196                   "      b\n"
1197                   "}"));
1198  verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n"
1199               "  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
1200               "  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
1201               "  0x00, 0x00, 0x00, 0x00              // comment\n"
1202               "};");
1203}
1204
1205TEST_F(FormatTest, IgnoresIf0Contents) {
1206  EXPECT_EQ("#if 0\n"
1207            "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
1208            "#endif\n"
1209            "void f() {}",
1210            format("#if 0\n"
1211                   "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n"
1212                   "#endif\n"
1213                   "void f(  ) {  }"));
1214  EXPECT_EQ("#if false\n"
1215            "void f(  ) {  }\n"
1216            "#endif\n"
1217            "void g() {}\n",
1218            format("#if false\n"
1219                   "void f(  ) {  }\n"
1220                   "#endif\n"
1221                   "void g(  ) {  }\n"));
1222  EXPECT_EQ("enum E {\n"
1223            "  One,\n"
1224            "  Two,\n"
1225            "#if 0\n"
1226            "Three,\n"
1227            "      Four,\n"
1228            "#endif\n"
1229            "  Five\n"
1230            "};",
1231            format("enum E {\n"
1232                   "  One,Two,\n"
1233                   "#if 0\n"
1234                   "Three,\n"
1235                   "      Four,\n"
1236                   "#endif\n"
1237                   "  Five};"));
1238  EXPECT_EQ("enum F {\n"
1239            "  One,\n"
1240            "#if 1\n"
1241            "  Two,\n"
1242            "#if 0\n"
1243            "Three,\n"
1244            "      Four,\n"
1245            "#endif\n"
1246            "  Five\n"
1247            "#endif\n"
1248            "};",
1249            format("enum F {\n"
1250                   "One,\n"
1251                   "#if 1\n"
1252                   "Two,\n"
1253                   "#if 0\n"
1254                   "Three,\n"
1255                   "      Four,\n"
1256                   "#endif\n"
1257                   "Five\n"
1258                   "#endif\n"
1259                   "};"));
1260  EXPECT_EQ("enum G {\n"
1261            "  One,\n"
1262            "#if 0\n"
1263            "Two,\n"
1264            "#else\n"
1265            "  Three,\n"
1266            "#endif\n"
1267            "  Four\n"
1268            "};",
1269            format("enum G {\n"
1270                   "One,\n"
1271                   "#if 0\n"
1272                   "Two,\n"
1273                   "#else\n"
1274                   "Three,\n"
1275                   "#endif\n"
1276                   "Four\n"
1277                   "};"));
1278  EXPECT_EQ("enum H {\n"
1279            "  One,\n"
1280            "#if 0\n"
1281            "#ifdef Q\n"
1282            "Two,\n"
1283            "#else\n"
1284            "Three,\n"
1285            "#endif\n"
1286            "#endif\n"
1287            "  Four\n"
1288            "};",
1289            format("enum H {\n"
1290                   "One,\n"
1291                   "#if 0\n"
1292                   "#ifdef Q\n"
1293                   "Two,\n"
1294                   "#else\n"
1295                   "Three,\n"
1296                   "#endif\n"
1297                   "#endif\n"
1298                   "Four\n"
1299                   "};"));
1300  EXPECT_EQ("enum I {\n"
1301            "  One,\n"
1302            "#if /* test */ 0 || 1\n"
1303            "Two,\n"
1304            "Three,\n"
1305            "#endif\n"
1306            "  Four\n"
1307            "};",
1308            format("enum I {\n"
1309                   "One,\n"
1310                   "#if /* test */ 0 || 1\n"
1311                   "Two,\n"
1312                   "Three,\n"
1313                   "#endif\n"
1314                   "Four\n"
1315                   "};"));
1316  EXPECT_EQ("enum J {\n"
1317            "  One,\n"
1318            "#if 0\n"
1319            "#if 0\n"
1320            "Two,\n"
1321            "#else\n"
1322            "Three,\n"
1323            "#endif\n"
1324            "Four,\n"
1325            "#endif\n"
1326            "  Five\n"
1327            "};",
1328            format("enum J {\n"
1329                   "One,\n"
1330                   "#if 0\n"
1331                   "#if 0\n"
1332                   "Two,\n"
1333                   "#else\n"
1334                   "Three,\n"
1335                   "#endif\n"
1336                   "Four,\n"
1337                   "#endif\n"
1338                   "Five\n"
1339                   "};"));
1340
1341}
1342
1343//===----------------------------------------------------------------------===//
1344// Tests for classes, namespaces, etc.
1345//===----------------------------------------------------------------------===//
1346
1347TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) {
1348  verifyFormat("class A {};");
1349}
1350
1351TEST_F(FormatTest, UnderstandsAccessSpecifiers) {
1352  verifyFormat("class A {\n"
1353               "public:\n"
1354               "public: // comment\n"
1355               "protected:\n"
1356               "private:\n"
1357               "  void f() {}\n"
1358               "};");
1359  verifyGoogleFormat("class A {\n"
1360                     " public:\n"
1361                     " protected:\n"
1362                     " private:\n"
1363                     "  void f() {}\n"
1364                     "};");
1365}
1366
1367TEST_F(FormatTest, SeparatesLogicalBlocks) {
1368  EXPECT_EQ("class A {\n"
1369            "public:\n"
1370            "  void f();\n"
1371            "\n"
1372            "private:\n"
1373            "  void g() {}\n"
1374            "  // test\n"
1375            "protected:\n"
1376            "  int h;\n"
1377            "};",
1378            format("class A {\n"
1379                   "public:\n"
1380                   "void f();\n"
1381                   "private:\n"
1382                   "void g() {}\n"
1383                   "// test\n"
1384                   "protected:\n"
1385                   "int h;\n"
1386                   "};"));
1387}
1388
1389TEST_F(FormatTest, FormatsClasses) {
1390  verifyFormat("class A : public B {};");
1391  verifyFormat("class A : public ::B {};");
1392
1393  verifyFormat(
1394      "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
1395      "                             public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
1396  verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n"
1397               "    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
1398               "      public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};");
1399  verifyFormat(
1400      "class A : public B, public C, public D, public E, public F {};");
1401  verifyFormat("class AAAAAAAAAAAA : public B,\n"
1402               "                     public C,\n"
1403               "                     public D,\n"
1404               "                     public E,\n"
1405               "                     public F,\n"
1406               "                     public G {};");
1407
1408  verifyFormat("class\n"
1409               "    ReallyReallyLongClassName {\n};",
1410               getLLVMStyleWithColumns(32));
1411}
1412
1413TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) {
1414  verifyFormat("class A {\n} a, b;");
1415  verifyFormat("struct A {\n} a, b;");
1416  verifyFormat("union A {\n} a;");
1417}
1418
1419TEST_F(FormatTest, FormatsEnum) {
1420  verifyFormat("enum {\n"
1421               "  Zero,\n"
1422               "  One = 1,\n"
1423               "  Two = One + 1,\n"
1424               "  Three = (One + Two),\n"
1425               "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
1426               "  Five = (One, Two, Three, Four, 5)\n"
1427               "};");
1428  verifyFormat("enum Enum {};");
1429  verifyFormat("enum {};");
1430  verifyFormat("enum X E {\n} d;");
1431  verifyFormat("enum __attribute__((...)) E {\n} d;");
1432  verifyFormat("enum __declspec__((...)) E {\n} d;");
1433  verifyFormat("enum X f() {\n  a();\n  return 42;\n}");
1434}
1435
1436TEST_F(FormatTest, FormatsBitfields) {
1437  verifyFormat("struct Bitfields {\n"
1438               "  unsigned sClass : 8;\n"
1439               "  unsigned ValueKind : 2;\n"
1440               "};");
1441}
1442
1443TEST_F(FormatTest, FormatsNamespaces) {
1444  verifyFormat("namespace some_namespace {\n"
1445               "class A {};\n"
1446               "void f() { f(); }\n"
1447               "}");
1448  verifyFormat("namespace {\n"
1449               "class A {};\n"
1450               "void f() { f(); }\n"
1451               "}");
1452  verifyFormat("inline namespace X {\n"
1453               "class A {};\n"
1454               "void f() { f(); }\n"
1455               "}");
1456  verifyFormat("using namespace some_namespace;\n"
1457               "class A {};\n"
1458               "void f() { f(); }");
1459
1460  // This code is more common than we thought; if we
1461  // layout this correctly the semicolon will go into
1462  // its own line, which is undesireable.
1463  verifyFormat("namespace {};");
1464  verifyFormat("namespace {\n"
1465               "class A {};\n"
1466               "};");
1467}
1468
1469TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); }
1470
1471TEST_F(FormatTest, FormatsInlineASM) {
1472  verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));");
1473  verifyFormat(
1474      "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n"
1475      "    \"cpuid\\n\\t\"\n"
1476      "    \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n"
1477      "    : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n"
1478      "    : \"a\"(value));");
1479}
1480
1481TEST_F(FormatTest, FormatTryCatch) {
1482  // FIXME: Handle try-catch explicitly in the UnwrappedLineParser, then we'll
1483  // also not create single-line-blocks.
1484  verifyFormat("try {\n"
1485               "  throw a * b;\n"
1486               "}\n"
1487               "catch (int a) {\n"
1488               "  // Do nothing.\n"
1489               "}\n"
1490               "catch (...) {\n"
1491               "  exit(42);\n"
1492               "}");
1493
1494  // Function-level try statements.
1495  verifyFormat("int f() try { return 4; }\n"
1496               "catch (...) {\n"
1497               "  return 5;\n"
1498               "}");
1499  verifyFormat("class A {\n"
1500               "  int a;\n"
1501               "  A() try : a(0) {}\n"
1502               "  catch (...) {\n"
1503               "    throw;\n"
1504               "  }\n"
1505               "};\n");
1506}
1507
1508TEST_F(FormatTest, FormatObjCTryCatch) {
1509  verifyFormat("@try {\n"
1510               "  f();\n"
1511               "}\n"
1512               "@catch (NSException e) {\n"
1513               "  @throw;\n"
1514               "}\n"
1515               "@finally {\n"
1516               "  exit(42);\n"
1517               "}");
1518}
1519
1520TEST_F(FormatTest, StaticInitializers) {
1521  verifyFormat("static SomeClass SC = { 1, 'a' };");
1522
1523  verifyFormat(
1524      "static SomeClass WithALoooooooooooooooooooongName = {\n"
1525      "  100000000, \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
1526      "};");
1527
1528  verifyFormat(
1529      "static SomeClass = { a, b, c, d, e, f, g, h, i, j,\n"
1530      "                     looooooooooooooooooooooooooooooooooongname,\n"
1531      "                     looooooooooooooooooooooooooooooong };");
1532  // Allow bin-packing in static initializers as this would often lead to
1533  // terrible results, e.g.:
1534  verifyGoogleFormat(
1535      "static SomeClass = {a, b, c, d, e, f, g, h, i, j,\n"
1536      "                    looooooooooooooooooooooooooooooooooongname,\n"
1537      "                    looooooooooooooooooooooooooooooong};");
1538  // Here, everything other than the "}" would fit on a line.
1539  verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n"
1540               "  100000000000000000000000\n"
1541               "};");
1542  EXPECT_EQ("S s = { a, b };", format("S s = {\n"
1543                                      "  a,\n"
1544                                      "\n"
1545                                      "  b\n"
1546                                      "};"));
1547
1548  // FIXME: This would fit into the column limit if we'd fit "{ {" on the first
1549  // line. However, the formatting looks a bit off and this probably doesn't
1550  // happen often in practice.
1551  verifyFormat("static int Variable[1] = {\n"
1552               "  { 1000000000000000000000000000000000000 }\n"
1553               "};",
1554               getLLVMStyleWithColumns(40));
1555}
1556
1557TEST_F(FormatTest, DesignatedInitializers) {
1558  verifyFormat("const struct A a = { .a = 1, .b = 2 };");
1559  verifyFormat("const struct A a = { .aaaaaaaaaa = 1,\n"
1560               "                     .bbbbbbbbbb = 2,\n"
1561               "                     .cccccccccc = 3,\n"
1562               "                     .dddddddddd = 4,\n"
1563               "                     .eeeeeeeeee = 5 };");
1564  verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n"
1565               "  .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n"
1566               "  .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n"
1567               "  .ccccccccccccccccccccccccccc = 3,\n"
1568               "  .ddddddddddddddddddddddddddd = 4,\n"
1569               "  .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5\n"
1570               "};");
1571
1572  verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};");
1573}
1574
1575TEST_F(FormatTest, NestedStaticInitializers) {
1576  verifyFormat("static A x = { { {} } };\n");
1577  verifyFormat("static A x = { { { init1, init2, init3, init4 },\n"
1578               "                 { init1, init2, init3, init4 } } };");
1579
1580  verifyFormat("somes Status::global_reps[3] = {\n"
1581               "  { kGlobalRef, OK_CODE, NULL, NULL, NULL },\n"
1582               "  { kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL },\n"
1583               "  { kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL }\n"
1584               "};");
1585  verifyGoogleFormat("SomeType Status::global_reps[3] = {\n"
1586                     "  {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n"
1587                     "  {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n"
1588                     "  {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}\n"
1589                     "};");
1590  verifyFormat(
1591      "CGRect cg_rect = { { rect.fLeft, rect.fTop },\n"
1592      "                   { rect.fRight - rect.fLeft, rect.fBottom - rect.fTop"
1593      " } };");
1594
1595  verifyFormat(
1596      "SomeArrayOfSomeType a = { { { 1, 2, 3 }, { 1, 2, 3 },\n"
1597      "                            { 111111111111111111111111111111,\n"
1598      "                              222222222222222222222222222222,\n"
1599      "                              333333333333333333333333333333 },\n"
1600      "                            { 1, 2, 3 }, { 1, 2, 3 } } };");
1601  verifyFormat(
1602      "SomeArrayOfSomeType a = { { { 1, 2, 3 } }, { { 1, 2, 3 } },\n"
1603      "                          { { 111111111111111111111111111111,\n"
1604      "                              222222222222222222222222222222,\n"
1605      "                              333333333333333333333333333333 } },\n"
1606      "                          { { 1, 2, 3 } }, { { 1, 2, 3 } } };");
1607  verifyGoogleFormat(
1608      "SomeArrayOfSomeType a = {{{1, 2, 3}}, {{1, 2, 3}},\n"
1609      "                         {{111111111111111111111111111111,\n"
1610      "                           222222222222222222222222222222,\n"
1611      "                           333333333333333333333333333333}},\n"
1612      "                         {{1, 2, 3}}, {{1, 2, 3}}};");
1613
1614  // FIXME: We might at some point want to handle this similar to parameter
1615  // lists, where we have an option to put each on a single line.
1616  verifyFormat(
1617      "struct {\n"
1618      "  unsigned bit;\n"
1619      "  const char *const name;\n"
1620      "} kBitsToOs[] = { { kOsMac, \"Mac\" }, { kOsWin, \"Windows\" },\n"
1621      "                  { kOsLinux, \"Linux\" }, { kOsCrOS, \"Chrome OS\" } };");
1622}
1623
1624TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) {
1625  verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro("
1626               "                      \\\n"
1627               "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)");
1628}
1629
1630TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) {
1631  verifyFormat(
1632      "virtual void write(ELFWriter *writerrr,\n"
1633      "                   OwningPtr<FileOutputBuffer> &buffer) = 0;");
1634}
1635
1636TEST_F(FormatTest, LayoutUnknownPPDirective) {
1637  EXPECT_EQ("#123 \"A string literal\"",
1638            format("   #     123    \"A string literal\""));
1639  EXPECT_EQ("#;", format("#;"));
1640  verifyFormat("#\n;\n;\n;");
1641}
1642
1643TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) {
1644  EXPECT_EQ("#line 42 \"test\"\n",
1645            format("#  \\\n  line  \\\n  42  \\\n  \"test\"\n"));
1646  EXPECT_EQ("#define A B\n", format("#  \\\n define  \\\n    A  \\\n       B\n",
1647                                    getLLVMStyleWithColumns(12)));
1648}
1649
1650TEST_F(FormatTest, EndOfFileEndsPPDirective) {
1651  EXPECT_EQ("#line 42 \"test\"",
1652            format("#  \\\n  line  \\\n  42  \\\n  \"test\""));
1653  EXPECT_EQ("#define A B", format("#  \\\n define  \\\n    A  \\\n       B"));
1654}
1655
1656TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) {
1657  verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13));
1658  verifyFormat("#define A( \\\n    BB)", getLLVMStyleWithColumns(12));
1659  verifyFormat("#define A( \\\n    A, B)", getLLVMStyleWithColumns(12));
1660  // FIXME: We never break before the macro name.
1661  verifyFormat("#define AA(\\\n    B)", getLLVMStyleWithColumns(12));
1662
1663  verifyFormat("#define A A\n#define A A");
1664  verifyFormat("#define A(X) A\n#define A A");
1665
1666  verifyFormat("#define Something Other", getLLVMStyleWithColumns(23));
1667  verifyFormat("#define Something    \\\n  Other", getLLVMStyleWithColumns(22));
1668}
1669
1670TEST_F(FormatTest, HandlePreprocessorDirectiveContext) {
1671  EXPECT_EQ("// somecomment\n"
1672            "#include \"a.h\"\n"
1673            "#define A(  \\\n"
1674            "    A, B)\n"
1675            "#include \"b.h\"\n"
1676            "// somecomment\n",
1677            format("  // somecomment\n"
1678                   "  #include \"a.h\"\n"
1679                   "#define A(A,\\\n"
1680                   "    B)\n"
1681                   "    #include \"b.h\"\n"
1682                   " // somecomment\n",
1683                   getLLVMStyleWithColumns(13)));
1684}
1685
1686TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); }
1687
1688TEST_F(FormatTest, LayoutCodeInMacroDefinitions) {
1689  EXPECT_EQ("#define A    \\\n"
1690            "  c;         \\\n"
1691            "  e;\n"
1692            "f;",
1693            format("#define A c; e;\n"
1694                   "f;",
1695                   getLLVMStyleWithColumns(14)));
1696}
1697
1698TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); }
1699
1700TEST_F(FormatTest, AlwaysFormatsEntireMacroDefinitions) {
1701  EXPECT_EQ("int  i;\n"
1702            "#define A \\\n"
1703            "  int i;  \\\n"
1704            "  int j\n"
1705            "int  k;",
1706            format("int  i;\n"
1707                   "#define A  \\\n"
1708                   " int   i    ;  \\\n"
1709                   " int   j\n"
1710                   "int  k;",
1711                   8, 0, getGoogleStyle())); // 8: position of "#define".
1712  EXPECT_EQ("int  i;\n"
1713            "#define A \\\n"
1714            "  int i;  \\\n"
1715            "  int j\n"
1716            "int  k;",
1717            format("int  i;\n"
1718                   "#define A  \\\n"
1719                   " int   i    ;  \\\n"
1720                   " int   j\n"
1721                   "int  k;",
1722                   45, 0, getGoogleStyle())); // 45: position of "j".
1723}
1724
1725TEST_F(FormatTest, MacroDefinitionInsideStatement) {
1726  EXPECT_EQ("int x,\n"
1727            "#define A\n"
1728            "    y;",
1729            format("int x,\n#define A\ny;"));
1730}
1731
1732TEST_F(FormatTest, HashInMacroDefinition) {
1733  verifyFormat("#define A \\\n  b #c;", getLLVMStyleWithColumns(11));
1734  verifyFormat("#define A \\\n"
1735               "  {       \\\n"
1736               "    f(#c);\\\n"
1737               "  }",
1738               getLLVMStyleWithColumns(11));
1739
1740  verifyFormat("#define A(X)         \\\n"
1741               "  void function##X()",
1742               getLLVMStyleWithColumns(22));
1743
1744  verifyFormat("#define A(a, b, c)   \\\n"
1745               "  void a##b##c()",
1746               getLLVMStyleWithColumns(22));
1747
1748  verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
1749}
1750
1751TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
1752  verifyFormat("#define A (1)");
1753}
1754
1755TEST_F(FormatTest, EmptyLinesInMacroDefinitions) {
1756  EXPECT_EQ("#define A b;", format("#define A \\\n"
1757                                   "          \\\n"
1758                                   "  b;",
1759                                   getLLVMStyleWithColumns(25)));
1760  EXPECT_EQ("#define A \\\n"
1761            "          \\\n"
1762            "  a;      \\\n"
1763            "  b;",
1764            format("#define A \\\n"
1765                   "          \\\n"
1766                   "  a;      \\\n"
1767                   "  b;",
1768                   getLLVMStyleWithColumns(11)));
1769  EXPECT_EQ("#define A \\\n"
1770            "  a;      \\\n"
1771            "          \\\n"
1772            "  b;",
1773            format("#define A \\\n"
1774                   "  a;      \\\n"
1775                   "          \\\n"
1776                   "  b;",
1777                   getLLVMStyleWithColumns(11)));
1778}
1779
1780TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) {
1781  verifyFormat("#define A :");
1782  verifyFormat("#define SOMECASES  \\\n"
1783               "  case 1:          \\\n"
1784               "  case 2\n",
1785               getLLVMStyleWithColumns(20));
1786  verifyFormat("#define A template <typename T>");
1787  verifyFormat("#define STR(x) #x\n"
1788               "f(STR(this_is_a_string_literal{));");
1789}
1790
1791TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) {
1792  verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline.
1793  EXPECT_EQ("class A : public QObject {\n"
1794            "  Q_OBJECT\n"
1795            "\n"
1796            "  A() {}\n"
1797            "};",
1798            format("class A  :  public QObject {\n"
1799                   "     Q_OBJECT\n"
1800                   "\n"
1801                   "  A() {\n}\n"
1802                   "}  ;"));
1803  EXPECT_EQ("SOME_MACRO\n"
1804            "namespace {\n"
1805            "void f();\n"
1806            "}",
1807            format("SOME_MACRO\n"
1808                   "  namespace    {\n"
1809                   "void   f(  );\n"
1810                   "}"));
1811  // Only if the identifier contains at least 5 characters.
1812  EXPECT_EQ("HTTP f();",
1813            format("HTTP\nf();"));
1814  EXPECT_EQ("MACRO\nf();",
1815            format("MACRO\nf();"));
1816  // Only if everything is upper case.
1817  EXPECT_EQ("class A : public QObject {\n"
1818            "  Q_Object A() {}\n"
1819            "};",
1820            format("class A  :  public QObject {\n"
1821                   "     Q_Object\n"
1822                   "\n"
1823                   "  A() {\n}\n"
1824                   "}  ;"));
1825}
1826
1827TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) {
1828  EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
1829            "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
1830            "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
1831            "class X {};\n"
1832            "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
1833            "int *createScopDetectionPass() { return 0; }",
1834            format("  INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
1835                   "  INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
1836                   "  INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
1837                   "  class X {};\n"
1838                   "  INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
1839                   "  int *createScopDetectionPass() { return 0; }"));
1840  // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as
1841  // braces, so that inner block is indented one level more.
1842  EXPECT_EQ("int q() {\n"
1843            "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
1844            "  IPC_MESSAGE_HANDLER(xxx, qqq)\n"
1845            "  IPC_END_MESSAGE_MAP()\n"
1846            "}",
1847            format("int q() {\n"
1848                   "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
1849                   "    IPC_MESSAGE_HANDLER(xxx, qqq)\n"
1850                   "  IPC_END_MESSAGE_MAP()\n"
1851                   "}"));
1852  EXPECT_EQ("int q() {\n"
1853            "  f(x);\n"
1854            "  f(x) {}\n"
1855            "  f(x)->g();\n"
1856            "  f(x)->*g();\n"
1857            "  f(x).g();\n"
1858            "  f(x) = x;\n"
1859            "  f(x) += x;\n"
1860            "  f(x) -= x;\n"
1861            "  f(x) *= x;\n"
1862            "  f(x) /= x;\n"
1863            "  f(x) %= x;\n"
1864            "  f(x) &= x;\n"
1865            "  f(x) |= x;\n"
1866            "  f(x) ^= x;\n"
1867            "  f(x) >>= x;\n"
1868            "  f(x) <<= x;\n"
1869            "  f(x)[y].z();\n"
1870            "  LOG(INFO) << x;\n"
1871            "  ifstream(x) >> x;\n"
1872            "}\n",
1873            format("int q() {\n"
1874                   "  f(x)\n;\n"
1875                   "  f(x)\n {}\n"
1876                   "  f(x)\n->g();\n"
1877                   "  f(x)\n->*g();\n"
1878                   "  f(x)\n.g();\n"
1879                   "  f(x)\n = x;\n"
1880                   "  f(x)\n += x;\n"
1881                   "  f(x)\n -= x;\n"
1882                   "  f(x)\n *= x;\n"
1883                   "  f(x)\n /= x;\n"
1884                   "  f(x)\n %= x;\n"
1885                   "  f(x)\n &= x;\n"
1886                   "  f(x)\n |= x;\n"
1887                   "  f(x)\n ^= x;\n"
1888                   "  f(x)\n >>= x;\n"
1889                   "  f(x)\n <<= x;\n"
1890                   "  f(x)\n[y].z();\n"
1891                   "  LOG(INFO)\n << x;\n"
1892                   "  ifstream(x)\n >> x;\n"
1893                   "}\n"));
1894  EXPECT_EQ("int q() {\n"
1895            "  f(x)\n"
1896            "  if (1) {\n"
1897            "  }\n"
1898            "  f(x)\n"
1899            "  while (1) {\n"
1900            "  }\n"
1901            "  f(x)\n"
1902            "  g(x);\n"
1903            "  f(x)\n"
1904            "  try {\n"
1905            "    q();\n"
1906            "  }\n"
1907            "  catch (...) {\n"
1908            "  }\n"
1909            "}\n",
1910            format("int q() {\n"
1911                   "f(x)\n"
1912                   "if (1) {}\n"
1913                   "f(x)\n"
1914                   "while (1) {}\n"
1915                   "f(x)\n"
1916                   "g(x);\n"
1917                   "f(x)\n"
1918                   "try { q(); } catch (...) {}\n"
1919                   "}\n"));
1920  EXPECT_EQ("class A {\n"
1921            "  A() : t(0) {}\n"
1922            "  A(X x)\n" // FIXME: function-level try blocks are broken.
1923            "  try : t(0) {\n"
1924            "  }\n"
1925            "  catch (...) {\n"
1926            "  }\n"
1927            "};",
1928            format("class A {\n"
1929                   "  A()\n : t(0) {}\n"
1930                   "  A(X x)\n"
1931                   "  try : t(0) {} catch (...) {}\n"
1932                   "};"));
1933}
1934
1935TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) {
1936  verifyFormat("#define A \\\n"
1937               "  f({     \\\n"
1938               "    g();  \\\n"
1939               "  });", getLLVMStyleWithColumns(11));
1940}
1941
1942TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) {
1943  EXPECT_EQ("{\n  {\n#define A\n  }\n}", format("{{\n#define A\n}}"));
1944}
1945
1946TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) {
1947  verifyFormat("{\n  { a #c; }\n}");
1948}
1949
1950TEST_F(FormatTest, FormatUnbalancedStructuralElements) {
1951  EXPECT_EQ("#define A \\\n  {       \\\n    {\nint i;",
1952            format("#define A { {\nint i;", getLLVMStyleWithColumns(11)));
1953  EXPECT_EQ("#define A \\\n  }       \\\n  }\nint i;",
1954            format("#define A } }\nint i;", getLLVMStyleWithColumns(11)));
1955}
1956
1957TEST_F(FormatTest, EscapedNewlineAtStartOfToken) {
1958  EXPECT_EQ(
1959      "#define A \\\n  int i;  \\\n  int j;",
1960      format("#define A \\\nint i;\\\n  int j;", getLLVMStyleWithColumns(11)));
1961  EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();"));
1962}
1963
1964TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) {
1965  verifyFormat("#define A \\\n"
1966               "  int v(  \\\n"
1967               "      a); \\\n"
1968               "  int i;",
1969               getLLVMStyleWithColumns(11));
1970}
1971
1972TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) {
1973  EXPECT_EQ(
1974      "#define ALooooooooooooooooooooooooooooooooooooooongMacro("
1975      "                      \\\n"
1976      "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1977      "\n"
1978      "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1979      "    aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n",
1980      format("  #define   ALooooooooooooooooooooooooooooooooooooooongMacro("
1981             "\\\n"
1982             "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1983             "  \n"
1984             "   AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1985             "  aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n"));
1986}
1987
1988TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) {
1989  EXPECT_EQ("int\n"
1990            "#define A\n"
1991            "    a;",
1992            format("int\n#define A\na;"));
1993  verifyFormat("functionCallTo(\n"
1994               "    someOtherFunction(\n"
1995               "        withSomeParameters, whichInSequence,\n"
1996               "        areLongerThanALine(andAnotherCall,\n"
1997               "#define A B\n"
1998               "                           withMoreParamters,\n"
1999               "                           whichStronglyInfluenceTheLayout),\n"
2000               "        andMoreParameters),\n"
2001               "    trailing);",
2002               getLLVMStyleWithColumns(69));
2003}
2004
2005TEST_F(FormatTest, LayoutBlockInsideParens) {
2006  EXPECT_EQ("functionCall({\n"
2007            "  int i;\n"
2008            "});",
2009            format(" functionCall ( {int i;} );"));
2010
2011  // FIXME: This is bad, find a better and more generic solution.
2012  EXPECT_EQ("functionCall({\n"
2013            "  int i;\n"
2014            "},\n"
2015            "             aaaa, bbbb, cccc);",
2016            format(" functionCall ( {int i;},  aaaa,   bbbb, cccc);"));
2017  verifyFormat(
2018      "Aaa({\n"
2019      "  int i;\n"
2020      "},\n"
2021      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
2022      "                                     ccccccccccccccccc));");
2023}
2024
2025TEST_F(FormatTest, LayoutBlockInsideStatement) {
2026  EXPECT_EQ("SOME_MACRO { int i; }\n"
2027            "int i;",
2028            format("  SOME_MACRO  {int i;}  int i;"));
2029}
2030
2031TEST_F(FormatTest, LayoutNestedBlocks) {
2032  verifyFormat("void AddOsStrings(unsigned bitmask) {\n"
2033               "  struct s {\n"
2034               "    int i;\n"
2035               "  };\n"
2036               "  s kBitsToOs[] = { { 10 } };\n"
2037               "  for (int i = 0; i < 10; ++i)\n"
2038               "    return;\n"
2039               "}");
2040}
2041
2042TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
2043  EXPECT_EQ("{}", format("{}"));
2044  verifyFormat("enum E {};");
2045  verifyFormat("enum E {}");
2046}
2047
2048//===----------------------------------------------------------------------===//
2049// Line break tests.
2050//===----------------------------------------------------------------------===//
2051
2052TEST_F(FormatTest, FormatsAwesomeMethodCall) {
2053  verifyFormat(
2054      "SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
2055      "                       parameter, parameter, parameter)),\n"
2056      "                   SecondLongCall(parameter));");
2057}
2058
2059TEST_F(FormatTest, PreventConfusingIndents) {
2060  verifyFormat(
2061      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2062      "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
2063      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
2064      "    aaaaaaaaaaaaaaaaaaaaaaaa);");
2065  verifyFormat(
2066      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[\n"
2067      "    aaaaaaaaaaaaaaaaaaaaaaaa[\n"
2068      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa],\n"
2069      "    aaaaaaaaaaaaaaaaaaaaaaaa];");
2070  verifyFormat(
2071      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
2072      "    aaaaaaaaaaaaaaaaaaaaaaaa<\n"
2073      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n"
2074      "    aaaaaaaaaaaaaaaaaaaaaaaa>;");
2075  verifyFormat("int a = bbbb && ccc && fffff(\n"
2076               "#define A Just forcing a new line\n"
2077               "                           ddd);");
2078}
2079
2080TEST_F(FormatTest, LineBreakingInBinaryExpressions) {
2081  verifyFormat(
2082      "bool aaaaaaa =\n"
2083      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n"
2084      "    bbbbbbbb();");
2085  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
2086               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n"
2087               "    ccccccccc == ddddddddddd;");
2088
2089  verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
2090               "                 aaaaaa) &&\n"
2091               "         bbbbbb && cccccc;");
2092  verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
2093               "                 aaaaaa) >>\n"
2094               "         bbbbbb;");
2095  verifyFormat("Whitespaces.addUntouchableComment(\n"
2096               "    SourceMgr.getSpellingColumnNumber(\n"
2097               "        TheLine.Last->FormatTok.Tok.getLocation()) -\n"
2098               "    1);");
2099
2100  verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2101               "     bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n"
2102               "    cccccc) {\n}");
2103
2104  FormatStyle OnePerLine = getLLVMStyle();
2105  OnePerLine.BinPackParameters = false;
2106  verifyFormat(
2107      "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2108      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2109      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}",
2110      OnePerLine);
2111}
2112
2113TEST_F(FormatTest, ExpressionIndentation) {
2114  verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2115               "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2116               "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
2117               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
2118               "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n"
2119               "                     bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n"
2120               "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
2121               "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n"
2122               "                 ccccccccccccccccccccccccccccccccccccccccc;");
2123  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
2124               "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2125               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
2126               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
2127  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2128               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
2129               "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
2130               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
2131  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
2132               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
2133               "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2134               "        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
2135  verifyFormat("if () {\n"
2136               "} else if (aaaaa && bbbbb > // break\n"
2137               "                        ccccc) {\n"
2138               "}");
2139}
2140
2141TEST_F(FormatTest, ConstructorInitializers) {
2142  verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
2143  verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}",
2144               getLLVMStyleWithColumns(45));
2145  verifyFormat("Constructor()\n"
2146               "    : Inttializer(FitsOnTheLine) {}",
2147               getLLVMStyleWithColumns(44));
2148  verifyFormat("Constructor()\n"
2149               "    : Inttializer(FitsOnTheLine) {}",
2150               getLLVMStyleWithColumns(43));
2151
2152  verifyFormat(
2153      "SomeClass::Constructor()\n"
2154      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
2155
2156  verifyFormat(
2157      "SomeClass::Constructor()\n"
2158      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
2159      "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}");
2160  verifyFormat(
2161      "SomeClass::Constructor()\n"
2162      "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
2163      "      aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
2164
2165  verifyFormat("Constructor()\n"
2166               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
2167               "      aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2168               "                               aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
2169               "      aaaaaaaaaaaaaaaaaaaaaaa() {}");
2170
2171  verifyFormat("Constructor()\n"
2172               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2173               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
2174
2175  verifyFormat("Constructor(int Parameter = 0)\n"
2176               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
2177               "      aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}");
2178
2179  // Here a line could be saved by splitting the second initializer onto two
2180  // lines, but that is not desireable.
2181  verifyFormat("Constructor()\n"
2182               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
2183               "      aaaaaaaaaaa(aaaaaaaaaaa),\n"
2184               "      aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
2185
2186  FormatStyle OnePerLine = getLLVMStyle();
2187  OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
2188  verifyFormat("SomeClass::Constructor()\n"
2189               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
2190               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
2191               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
2192               OnePerLine);
2193  verifyFormat("SomeClass::Constructor()\n"
2194               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
2195               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
2196               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
2197               OnePerLine);
2198  verifyFormat("MyClass::MyClass(int var)\n"
2199               "    : some_var_(var),            // 4 space indent\n"
2200               "      some_other_var_(var + 1) { // lined up\n"
2201               "}",
2202               OnePerLine);
2203  verifyFormat("Constructor()\n"
2204               "    : aaaaa(aaaaaa),\n"
2205               "      aaaaa(aaaaaa),\n"
2206               "      aaaaa(aaaaaa),\n"
2207               "      aaaaa(aaaaaa),\n"
2208               "      aaaaa(aaaaaa) {}",
2209               OnePerLine);
2210  verifyFormat("Constructor()\n"
2211               "    : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n"
2212               "            aaaaaaaaaaaaaaaaaaaaaa) {}",
2213               OnePerLine);
2214}
2215
2216TEST_F(FormatTest, MemoizationTests) {
2217  // This breaks if the memoization lookup does not take \c Indent and
2218  // \c LastSpace into account.
2219  verifyFormat(
2220      "extern CFRunLoopTimerRef\n"
2221      "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n"
2222      "                     CFTimeInterval interval, CFOptionFlags flags,\n"
2223      "                     CFIndex order, CFRunLoopTimerCallBack callout,\n"
2224      "                     CFRunLoopTimerContext *context) {}");
2225
2226  // Deep nesting somewhat works around our memoization.
2227  verifyFormat(
2228      "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
2229      "    aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
2230      "        aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
2231      "            aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
2232      "                aaaaa())))))))))))))))))))))))))))))))))))))));",
2233      getLLVMStyleWithColumns(65));
2234  verifyFormat(
2235      "aaaaa(\n"
2236      "    aaaaa,\n"
2237      "    aaaaa(\n"
2238      "        aaaaa,\n"
2239      "        aaaaa(\n"
2240      "            aaaaa,\n"
2241      "            aaaaa(\n"
2242      "                aaaaa,\n"
2243      "                aaaaa(\n"
2244      "                    aaaaa,\n"
2245      "                    aaaaa(\n"
2246      "                        aaaaa,\n"
2247      "                        aaaaa(\n"
2248      "                            aaaaa,\n"
2249      "                            aaaaa(\n"
2250      "                                aaaaa,\n"
2251      "                                aaaaa(\n"
2252      "                                    aaaaa,\n"
2253      "                                    aaaaa(\n"
2254      "                                        aaaaa,\n"
2255      "                                        aaaaa(\n"
2256      "                                            aaaaa,\n"
2257      "                                            aaaaa(\n"
2258      "                                                aaaaa,\n"
2259      "                                                aaaaa))))))))))));",
2260      getLLVMStyleWithColumns(65));
2261  verifyFormat(
2262      "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"
2263      "                                  a),\n"
2264      "                                a),\n"
2265      "                              a),\n"
2266      "                            a),\n"
2267      "                          a),\n"
2268      "                        a),\n"
2269      "                      a),\n"
2270      "                    a),\n"
2271      "                  a),\n"
2272      "                a),\n"
2273      "              a),\n"
2274      "            a),\n"
2275      "          a),\n"
2276      "        a),\n"
2277      "      a),\n"
2278      "    a),\n"
2279      "  a)",
2280      getLLVMStyleWithColumns(65));
2281
2282  // This test takes VERY long when memoization is broken.
2283  FormatStyle OnePerLine = getLLVMStyle();
2284  OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
2285  OnePerLine.BinPackParameters = false;
2286  std::string input = "Constructor()\n"
2287                      "    : aaaa(a,\n";
2288  for (unsigned i = 0, e = 80; i != e; ++i) {
2289    input += "           a,\n";
2290  }
2291  input += "           a) {}";
2292  verifyFormat(input, OnePerLine);
2293}
2294
2295TEST_F(FormatTest, BreaksAsHighAsPossible) {
2296  verifyFormat(
2297      "void f() {\n"
2298      "  if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
2299      "      (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
2300      "    f();\n"
2301      "}");
2302  verifyFormat("if (Intervals[i].getRange().getFirst() <\n"
2303               "    Intervals[i - 1].getRange().getLast()) {\n}");
2304}
2305
2306TEST_F(FormatTest, BreaksFunctionDeclarations) {
2307  // Principially, we break function declarations in a certain order:
2308  // 1) break amongst arguments.
2309  verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n"
2310               "                              Cccccccccccccc cccccccccccccc);");
2311
2312  // 2) break after return type.
2313  verifyFormat(
2314      "Aaaaaaaaaaaaaaaaaaaaaaaa\n"
2315      "    bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);");
2316
2317  // 3) break after (.
2318  verifyFormat(
2319      "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n"
2320      "    Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);");
2321
2322  // 4) break before after nested name specifiers.
2323  verifyFormat(
2324      "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2325      "    SomeClasssssssssssssssssssssssssssssssssssssss::\n"
2326      "        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);");
2327
2328  // However, there are exceptions, if a sufficient amount of lines can be
2329  // saved.
2330  // FIXME: The precise cut-offs wrt. the number of saved lines might need some
2331  // more adjusting.
2332  verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
2333               "                                  Cccccccccccccc cccccccccc,\n"
2334               "                                  Cccccccccccccc cccccccccc,\n"
2335               "                                  Cccccccccccccc cccccccccc,\n"
2336               "                                  Cccccccccccccc cccccccccc);");
2337  verifyFormat(
2338      "Aaaaaaaaaaaaaaaaaa\n"
2339      "    bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
2340      "                Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
2341      "                Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);");
2342  verifyFormat(
2343      "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
2344      "                                          Cccccccccccccc cccccccccc,\n"
2345      "                                          Cccccccccccccc cccccccccc,\n"
2346      "                                          Cccccccccccccc cccccccccc,\n"
2347      "                                          Cccccccccccccc cccccccccc,\n"
2348      "                                          Cccccccccccccc cccccccccc,\n"
2349      "                                          Cccccccccccccc cccccccccc);");
2350  verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
2351               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
2352               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
2353               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
2354               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);");
2355
2356  // Break after multi-line parameters.
2357  verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2358               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2359               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2360               "    bbbb bbbb);");
2361}
2362
2363TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) {
2364  verifyFormat("void someLongFunction(\n"
2365               "    int someLongParameter) const {}",
2366               getLLVMStyleWithColumns(46));
2367  FormatStyle Style = getGoogleStyle();
2368  Style.ColumnLimit = 47;
2369  verifyFormat("void\n"
2370               "someLongFunction(int someLongParameter) const {\n}",
2371               getLLVMStyleWithColumns(47));
2372  verifyFormat("void someLongFunction(\n"
2373               "    int someLongParameter) const {}",
2374               Style);
2375  verifyFormat("LoooooongReturnType\n"
2376               "someLoooooooongFunction() const {}",
2377               getLLVMStyleWithColumns(47));
2378  verifyFormat("LoooooongReturnType someLoooooooongFunction()\n"
2379               "    const {}",
2380               Style);
2381
2382  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2383               "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
2384  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
2385               "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
2386  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
2387               "    LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}");
2388
2389  verifyFormat(
2390      "void aaaaaaaaaaaaaaaaaa()\n"
2391      "    __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n"
2392      "                   aaaaaaaaaaaaaaaaaaaaaaaaa));");
2393  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2394               "    __attribute__((unused));");
2395  verifyFormat(
2396      "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2397      "    GUARDED_BY(aaaaaaaaaaaa);");
2398}
2399
2400
2401TEST_F(FormatTest, BreaksDesireably) {
2402  verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
2403               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
2404               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}");
2405  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2406               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
2407               "}");
2408
2409  verifyFormat(
2410      "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2411      "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
2412
2413  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2414               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2415               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
2416
2417  verifyFormat(
2418      "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2419      "                            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
2420      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2421      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
2422
2423  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2424               "    (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2425
2426  verifyFormat(
2427      "void f() {\n"
2428      "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
2429      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
2430      "}");
2431  verifyFormat(
2432      "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2433      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
2434  verifyFormat(
2435      "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2436      "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
2437  verifyFormat(
2438      "aaaaaaaaaaaaaaaaa(\n"
2439      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2440      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2441
2442  // This test case breaks on an incorrect memoization, i.e. an optimization not
2443  // taking into account the StopAt value.
2444  verifyFormat(
2445      "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
2446      "       aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
2447      "       aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
2448      "       (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2449
2450  verifyFormat("{\n  {\n    {\n"
2451               "      Annotation.SpaceRequiredBefore =\n"
2452               "          Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n"
2453               "          Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n"
2454               "    }\n  }\n}");
2455}
2456
2457TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) {
2458  FormatStyle NoBinPacking = getGoogleStyle();
2459  NoBinPacking.BinPackParameters = false;
2460  verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n"
2461               "  aaaaaaaaaaaaaaaaaaaa,\n"
2462               "  aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);",
2463               NoBinPacking);
2464  verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n"
2465               "        aaaaaaaaaaaaa,\n"
2466               "        aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));",
2467               NoBinPacking);
2468  verifyFormat(
2469      "aaaaaaaa(aaaaaaaaaaaaa,\n"
2470      "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2471      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
2472      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2473      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));",
2474      NoBinPacking);
2475  verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
2476               "    .aaaaaaaaaaaaaaaaaa();",
2477               NoBinPacking);
2478  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2479               "    aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);",
2480               NoBinPacking);
2481
2482  verifyFormat(
2483      "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2484      "             aaaaaaaaaaaa,\n"
2485      "             aaaaaaaaaaaa);",
2486      NoBinPacking);
2487  verifyFormat(
2488      "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n"
2489      "                               ddddddddddddddddddddddddddddd),\n"
2490      "             test);",
2491      NoBinPacking);
2492
2493  verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n"
2494               "            aaaaaaaaaaaaaaaaaaaaaaa,\n"
2495               "            aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;",
2496               NoBinPacking);
2497  verifyFormat("a(\"a\"\n"
2498               "  \"a\",\n"
2499               "  a);");
2500
2501  NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
2502  verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n"
2503               "                aaaaaaaaa,\n"
2504               "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
2505               NoBinPacking);
2506  verifyFormat(
2507      "void f() {\n"
2508      "  aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
2509      "      .aaaaaaa();\n"
2510      "}",
2511      NoBinPacking);
2512  verifyFormat(
2513      "template <class SomeType, class SomeOtherType>\n"
2514      "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}",
2515      NoBinPacking);
2516}
2517
2518TEST_F(FormatTest, FormatsBuilderPattern) {
2519  verifyFormat(
2520      "return llvm::StringSwitch<Reference::Kind>(name)\n"
2521      "    .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n"
2522      "    .StartsWith(\".eh_frame\", ORDER_EH_FRAME).StartsWith(\".init\", ORDER_INIT)\n"
2523      "    .StartsWith(\".fini\", ORDER_FINI).StartsWith(\".hash\", ORDER_HASH)\n"
2524      "    .Default(ORDER_TEXT);\n");
2525
2526  verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n"
2527               "       aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();");
2528  verifyFormat(
2529      "aaaaaaa->aaaaaaa\n"
2530      "    ->aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2531      "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
2532  verifyFormat(
2533      "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n"
2534      "    aaaaaaaaaaaaaa);");
2535  verifyFormat(
2536      "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa = aaaaaa->aaaaaaaaaaaa()\n"
2537      "    ->aaaaaaaaaaaaaaaa(\n"
2538      "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2539      "    ->aaaaaaaaaaaaaaaaa();");
2540}
2541
2542TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {
2543  verifyFormat(
2544      "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2545      "    bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}");
2546  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
2547               "    ccccccccccccccccccccccccc) {\n}");
2548  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
2549               "    ccccccccccccccccccccccccc) {\n}");
2550  verifyFormat(
2551      "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n"
2552      "    ccccccccccccccccccccccccc) {\n}");
2553  verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n"
2554               "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n"
2555               "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n"
2556               "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
2557  verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n"
2558               "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n"
2559               "    aaaaaaaaaaaaaaa != aa) {\n}");
2560}
2561
2562TEST_F(FormatTest, BreaksAfterAssignments) {
2563  verifyFormat(
2564      "unsigned Cost =\n"
2565      "    TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n"
2566      "                        SI->getPointerAddressSpaceee());\n");
2567  verifyFormat(
2568      "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n"
2569      "    Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());");
2570
2571  verifyFormat(
2572      "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa()\n"
2573      "    .aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);");
2574  verifyFormat("unsigned OriginalStartColumn =\n"
2575               "    SourceMgr.getSpellingColumnNumber(\n"
2576               "        Current.FormatTok.getStartOfNonWhitespace()) -\n"
2577               "    1;");
2578}
2579
2580TEST_F(FormatTest, AlignsAfterAssignments) {
2581  verifyFormat(
2582      "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2583      "             aaaaaaaaaaaaaaaaaaaaaaaaa;");
2584  verifyFormat(
2585      "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2586      "          aaaaaaaaaaaaaaaaaaaaaaaaa;");
2587  verifyFormat(
2588      "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2589      "           aaaaaaaaaaaaaaaaaaaaaaaaa;");
2590  verifyFormat(
2591      "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2592      "              aaaaaaaaaaaaaaaaaaaaaaaaa);");
2593  verifyFormat("double LooooooooooooooooooooooooongResult =\n"
2594               "    aaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaa +\n"
2595               "    aaaaaaaaaaaaaaaaaaaaaaaa;");
2596}
2597
2598TEST_F(FormatTest, AlignsAfterReturn) {
2599  verifyFormat(
2600      "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2601      "       aaaaaaaaaaaaaaaaaaaaaaaaa;");
2602  verifyFormat(
2603      "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2604      "        aaaaaaaaaaaaaaaaaaaaaaaaa);");
2605  verifyFormat(
2606      "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
2607      "       aaaaaaaaaaaaaaaaaaaaaa();");
2608  verifyFormat(
2609      "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
2610      "        aaaaaaaaaaaaaaaaaaaaaa());");
2611  verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2612               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2613  verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2614               "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n"
2615               "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2616}
2617
2618TEST_F(FormatTest, BreaksConditionalExpressions) {
2619  verifyFormat(
2620      "aaaa(aaaaaaaaaaaaaaaaaaaa,\n"
2621      "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2622      "                                : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2623  verifyFormat(
2624      "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2625      "                                   : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2626  verifyFormat(
2627      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n"
2628      "                                                    : aaaaaaaaaaaaa);");
2629  verifyFormat(
2630      "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2631      "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2632      "                                    : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2633      "                   aaaaaaaaaaaaa);");
2634  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2635               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2636               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2637               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2638               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2639  verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2640               "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2641               "           ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2642               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2643               "           : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2644               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
2645               "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2646
2647  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2648               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2649               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2650  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
2651               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2652               "        ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2653               "        : aaaaaaaaaaaaaaaa;");
2654  verifyFormat(
2655      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2656      "    ? aaaaaaaaaaaaaaa\n"
2657      "    : aaaaaaaaaaaaaaa;");
2658  verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
2659               "          aaaaaaaaa\n"
2660               "      ? b\n"
2661               "      : c);");
2662  verifyFormat(
2663      "unsigned Indent =\n"
2664      "    format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n"
2665      "                              ? IndentForLevel[TheLine.Level]\n"
2666      "                              : TheLine * 2,\n"
2667      "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
2668      getLLVMStyleWithColumns(70));
2669  verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
2670               "                  ? aaaaaaaaaaaaaaa\n"
2671               "                  : bbbbbbbbbbbbbbb //\n"
2672               "                        ? ccccccccccccccc\n"
2673               "                        : ddddddddddddddd;");
2674  verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n"
2675               "                  ? aaaaaaaaaaaaaaa\n"
2676               "                  : (bbbbbbbbbbbbbbb //\n"
2677               "                         ? ccccccccccccccc\n"
2678               "                         : ddddddddddddddd);");
2679
2680  FormatStyle NoBinPacking = getLLVMStyle();
2681  NoBinPacking.BinPackParameters = false;
2682  verifyFormat(
2683      "void f() {\n"
2684      "  g(aaa,\n"
2685      "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
2686      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2687      "        ? aaaaaaaaaaaaaaa\n"
2688      "        : aaaaaaaaaaaaaaa);\n"
2689      "}",
2690      NoBinPacking);
2691}
2692
2693TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
2694  verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n"
2695               "     aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();");
2696  verifyFormat("bool a = true, b = false;");
2697
2698  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2699               "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n"
2700               "     bbbbbbbbbbbbbbbbbbbbbbbbb =\n"
2701               "         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);");
2702  verifyFormat(
2703      "bool aaaaaaaaaaaaaaaaaaaaa =\n"
2704      "         bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n"
2705      "     d = e && f;");
2706  verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n"
2707               "          c = cccccccccccccccccccc, d = dddddddddddddddddddd;");
2708  verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
2709               "          *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;");
2710  verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n"
2711               "          ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;");
2712  // FIXME: If multiple variables are defined, the "*" needs to move to the new
2713  // line. Also fix indent for breaking after the type, this looks bad.
2714  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
2715               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n"
2716               "   *b = bbbbbbbbbbbbbbbbbbb;");
2717
2718  // Not ideal, but pointer-with-type does not allow much here.
2719  verifyGoogleFormat(
2720      "aaaaaaaaa* a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
2721      "           *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;");
2722}
2723
2724TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
2725  verifyFormat("arr[foo ? bar : baz];");
2726  verifyFormat("f()[foo ? bar : baz];");
2727  verifyFormat("(a + b)[foo ? bar : baz];");
2728  verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
2729}
2730
2731TEST_F(FormatTest, AlignsStringLiterals) {
2732  verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
2733               "                                      \"short literal\");");
2734  verifyFormat(
2735      "looooooooooooooooooooooooongFunction(\n"
2736      "    \"short literal\"\n"
2737      "    \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
2738  verifyFormat("someFunction(\"Always break between multi-line\"\n"
2739               "             \" string literals\",\n"
2740               "             and, other, parameters);");
2741  EXPECT_EQ("fun + \"1243\" /* comment */\n"
2742            "      \"5678\";",
2743            format("fun + \"1243\" /* comment */\n"
2744                   "      \"5678\";",
2745                   getLLVMStyleWithColumns(28)));
2746  EXPECT_EQ(
2747      "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
2748      "         \"aaaaaaaaaaaaaaaaaaaaa\"\n"
2749      "         \"aaaaaaaaaaaaaaaa\";",
2750      format("aaaaaa ="
2751             "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa "
2752             "aaaaaaaaaaaaaaaaaaaaa\" "
2753             "\"aaaaaaaaaaaaaaaa\";"));
2754  verifyFormat("a = a + \"a\"\n"
2755               "        \"a\"\n"
2756               "        \"a\";");
2757  verifyFormat("f(\"a\", \"b\"\n"
2758               "       \"c\");");
2759
2760  verifyFormat(
2761      "#define LL_FORMAT \"ll\"\n"
2762      "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n"
2763      "       \"d, ddddddddd: %\" LL_FORMAT \"d\");");
2764
2765  verifyFormat("#define A(X)          \\\n"
2766               "  \"aaaaa\" #X \"bbbbbb\" \\\n"
2767               "  \"ccccc\"",
2768               getLLVMStyleWithColumns(23));
2769  verifyFormat("#define A \"def\"\n"
2770               "f(\"abc\" A \"ghi\"\n"
2771               "  \"jkl\");");
2772}
2773
2774TEST_F(FormatTest, AlignsPipes) {
2775  verifyFormat(
2776      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2777      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2778      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2779  verifyFormat(
2780      "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
2781      "                     << aaaaaaaaaaaaaaaaaaaa;");
2782  verifyFormat(
2783      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2784      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2785  verifyFormat(
2786      "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
2787      "                \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
2788      "             << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
2789  verifyFormat(
2790      "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2791      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2792      "         << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2793
2794  verifyFormat("return out << \"somepacket = {\\n\"\n"
2795               "           << \"  aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n"
2796               "           << \"  bbbb = \" << pkt.bbbb << \"\\n\"\n"
2797               "           << \"  cccccc = \" << pkt.cccccc << \"\\n\"\n"
2798               "           << \"  ddd = [\" << pkt.ddd << \"]\\n\"\n"
2799               "           << \"}\";");
2800
2801  verifyFormat(
2802      "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n"
2803      "             << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n"
2804      "             << \"ccccccccccccccccc = \" << ccccccccccccccccc\n"
2805      "             << \"ddddddddddddddddd = \" << ddddddddddddddddd\n"
2806      "             << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;");
2807  verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n"
2808               "             << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
2809  verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaa: \"\n"
2810               "             << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2811
2812  verifyFormat(
2813      "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2814      "                    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2815}
2816
2817TEST_F(FormatTest, UnderstandsEquals) {
2818  verifyFormat(
2819      "aaaaaaaaaaaaaaaaa =\n"
2820      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2821  verifyFormat(
2822      "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2823      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
2824  verifyFormat(
2825      "if (a) {\n"
2826      "  f();\n"
2827      "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2828      "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
2829      "}");
2830
2831  verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2832               "        100000000 + 10000000) {\n}");
2833}
2834
2835TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
2836  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
2837               "    .looooooooooooooooooooooooooooooooooooooongFunction();");
2838
2839  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
2840               "    ->looooooooooooooooooooooooooooooooooooooongFunction();");
2841
2842  verifyFormat(
2843      "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
2844      "                                                          Parameter2);");
2845
2846  verifyFormat(
2847      "ShortObject->shortFunction(\n"
2848      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
2849      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
2850
2851  verifyFormat("loooooooooooooongFunction(\n"
2852               "    LoooooooooooooongObject->looooooooooooooooongFunction());");
2853
2854  verifyFormat(
2855      "function(LoooooooooooooooooooooooooooooooooooongObject\n"
2856      "             ->loooooooooooooooooooooooooooooooooooooooongFunction());");
2857
2858  verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
2859               "    .WillRepeatedly(Return(SomeValue));");
2860  verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)]\n"
2861               "    .insert(ccccccccccccccccccccccc);");
2862  verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2863               "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa).aaaaa(aaaaa),\n"
2864               "      aaaaaaaaaaaaaaaaaaaaa);");
2865  verifyFormat(
2866      "aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2867      "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2868      "    .aaaaaaaaaaaaaaa(\n"
2869      "         aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2870      "            aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
2871  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2872               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2873               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2874               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n"
2875               "}");
2876
2877  // Here, it is not necessary to wrap at "." or "->".
2878  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
2879               "    aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
2880  verifyFormat(
2881      "aaaaaaaaaaa->aaaaaaaaa(\n"
2882      "    aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2883      "    aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n");
2884
2885  verifyFormat(
2886      "aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2887      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());");
2888  verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n"
2889               "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
2890  verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n"
2891               "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
2892
2893  // FIXME: Should we break before .a()?
2894  verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2895               "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa).a();");
2896
2897  FormatStyle NoBinPacking = getLLVMStyle();
2898  NoBinPacking.BinPackParameters = false;
2899  verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
2900               "    .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
2901               "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n"
2902               "                         aaaaaaaaaaaaaaaaaaa,\n"
2903               "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
2904               NoBinPacking);
2905}
2906
2907TEST_F(FormatTest, WrapsTemplateDeclarations) {
2908  verifyFormat("template <typename T>\n"
2909               "virtual void loooooooooooongFunction(int Param1, int Param2);");
2910  verifyFormat(
2911      "template <typename T>\n"
2912      "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;");
2913  verifyFormat("template <typename T>\n"
2914               "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n"
2915               "       int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);");
2916  verifyFormat(
2917      "template <typename T>\n"
2918      "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n"
2919      "                                      int Paaaaaaaaaaaaaaaaaaaaram2);");
2920  verifyFormat(
2921      "template <typename T>\n"
2922      "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n"
2923      "                    aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n"
2924      "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2925  verifyFormat("template <typename T>\n"
2926               "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2927               "    int aaaaaaaaaaaaaaaaaaaaaa);");
2928  verifyFormat(
2929      "template <typename T1, typename T2 = char, typename T3 = char,\n"
2930      "          typename T4 = char>\n"
2931      "void f();");
2932  verifyFormat(
2933      "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
2934      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2935
2936  verifyFormat("a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n"
2937               "    a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));");
2938
2939  verifyFormat("template <typename T> class C {};");
2940  verifyFormat("template <typename T> void f();");
2941  verifyFormat("template <typename T> void f() {}");
2942
2943  FormatStyle AlwaysBreak = getLLVMStyle();
2944  AlwaysBreak.AlwaysBreakTemplateDeclarations = true;
2945  verifyFormat("template <typename T>\nclass C {};", AlwaysBreak);
2946  verifyFormat("template <typename T>\nvoid f();", AlwaysBreak);
2947  verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak);
2948  verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2949               "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n"
2950               "    ccccccccccccccccccccccccccccccccccccccccccccccc);");
2951}
2952
2953TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
2954  verifyFormat(
2955      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2956      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2957  verifyFormat(
2958      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2959      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2960      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
2961
2962  // FIXME: Should we have the extra indent after the second break?
2963  verifyFormat(
2964      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2965      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2966      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2967
2968  verifyFormat(
2969      "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n"
2970      "                    cccccccccccccccccccccccccccccccccccccccccccccc());");
2971
2972  // Breaking at nested name specifiers is generally not desirable.
2973  verifyFormat(
2974      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2975      "    aaaaaaaaaaaaaaaaaaaaaaa);");
2976
2977  verifyFormat(
2978      "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2979      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2980      "                   aaaaaaaaaaaaaaaaaaaaa);",
2981      getLLVMStyleWithColumns(74));
2982
2983  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2984               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2985               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2986}
2987
2988TEST_F(FormatTest, UnderstandsTemplateParameters) {
2989  verifyFormat("A<int> a;");
2990  verifyFormat("A<A<A<int> > > a;");
2991  verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
2992  verifyFormat("bool x = a < 1 || 2 > a;");
2993  verifyFormat("bool x = 5 < f<int>();");
2994  verifyFormat("bool x = f<int>() > 5;");
2995  verifyFormat("bool x = 5 < a<int>::x;");
2996  verifyFormat("bool x = a < 4 ? a > 2 : false;");
2997  verifyFormat("bool x = f() ? a < 2 : a > 2;");
2998
2999  verifyGoogleFormat("A<A<int>> a;");
3000  verifyGoogleFormat("A<A<A<int>>> a;");
3001  verifyGoogleFormat("A<A<A<A<int>>>> a;");
3002  verifyGoogleFormat("A<A<int> > a;");
3003  verifyGoogleFormat("A<A<A<int> > > a;");
3004  verifyGoogleFormat("A<A<A<A<int> > > > a;");
3005  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle()));
3006  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle()));
3007
3008  verifyFormat("test >> a >> b;");
3009  verifyFormat("test << a >> b;");
3010
3011  verifyFormat("f<int>();");
3012  verifyFormat("template <typename T> void f() {}");
3013
3014  // Not template parameters.
3015  verifyFormat("return a < b && c > d;");
3016  verifyFormat("void f() {\n"
3017               "  while (a < b && c > d) {\n"
3018               "  }\n"
3019               "}");
3020}
3021
3022TEST_F(FormatTest, UnderstandsBinaryOperators) {
3023  verifyFormat("COMPARE(a, ==, b);");
3024}
3025
3026TEST_F(FormatTest, UnderstandsPointersToMembers) {
3027  verifyFormat("int A::*x;");
3028  verifyFormat("int (S::*func)(void *);");
3029  verifyFormat("void f() { int (S::*func)(void *); }");
3030  verifyFormat("typedef bool *(Class::*Member)() const;");
3031  verifyFormat("void f() {\n"
3032               "  (a->*f)();\n"
3033               "  a->*x;\n"
3034               "  (a.*f)();\n"
3035               "  ((*a).*f)();\n"
3036               "  a.*x;\n"
3037               "}");
3038  FormatStyle Style = getLLVMStyle();
3039  Style.PointerBindsToType = true;
3040  verifyFormat("typedef bool* (Class::*Member)() const;", Style);
3041}
3042
3043TEST_F(FormatTest, UnderstandsUnaryOperators) {
3044  verifyFormat("int a = -2;");
3045  verifyFormat("f(-1, -2, -3);");
3046  verifyFormat("a[-1] = 5;");
3047  verifyFormat("int a = 5 + -2;");
3048  verifyFormat("if (i == -1) {\n}");
3049  verifyFormat("if (i != -1) {\n}");
3050  verifyFormat("if (i > -1) {\n}");
3051  verifyFormat("if (i < -1) {\n}");
3052  verifyFormat("++(a->f());");
3053  verifyFormat("--(a->f());");
3054  verifyFormat("(a->f())++;");
3055  verifyFormat("a[42]++;");
3056  verifyFormat("if (!(a->f())) {\n}");
3057
3058  verifyFormat("a-- > b;");
3059  verifyFormat("b ? -a : c;");
3060  verifyFormat("n * sizeof char16;");
3061  verifyFormat("n * alignof char16;");
3062  verifyFormat("sizeof(char);");
3063  verifyFormat("alignof(char);");
3064
3065  verifyFormat("return -1;");
3066  verifyFormat("switch (a) {\n"
3067               "case -1:\n"
3068               "  break;\n"
3069               "}");
3070  verifyFormat("#define X -1");
3071  verifyFormat("#define X -kConstant");
3072
3073  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { -5, +3 };");
3074  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { +5, -3 };");
3075
3076  verifyFormat("int a = /* confusing comment */ -1;");
3077  // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case.
3078  verifyFormat("int a = i /* confusing comment */++;");
3079}
3080
3081TEST_F(FormatTest, UndestandsOverloadedOperators) {
3082  verifyFormat("bool operator<();");
3083  verifyFormat("bool operator>();");
3084  verifyFormat("bool operator=();");
3085  verifyFormat("bool operator==();");
3086  verifyFormat("bool operator!=();");
3087  verifyFormat("int operator+();");
3088  verifyFormat("int operator++();");
3089  verifyFormat("bool operator();");
3090  verifyFormat("bool operator()();");
3091  verifyFormat("bool operator[]();");
3092  verifyFormat("operator bool();");
3093  verifyFormat("operator int();");
3094  verifyFormat("operator void *();");
3095  verifyFormat("operator SomeType<int>();");
3096  verifyFormat("operator SomeType<int, int>();");
3097  verifyFormat("operator SomeType<SomeType<int> >();");
3098  verifyFormat("void *operator new(std::size_t size);");
3099  verifyFormat("void *operator new[](std::size_t size);");
3100  verifyFormat("void operator delete(void *ptr);");
3101  verifyFormat("void operator delete[](void *ptr);");
3102  verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n"
3103               "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);");
3104
3105  verifyFormat(
3106      "ostream &operator<<(ostream &OutputStream,\n"
3107      "                    SomeReallyLongType WithSomeReallyLongValue);");
3108  verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n"
3109               "               const aaaaaaaaaaaaaaaaaaaaa &right) {\n"
3110               "  return left.group < right.group;\n"
3111               "}");
3112  verifyFormat("SomeType &operator=(const SomeType &S);");
3113
3114  verifyGoogleFormat("operator void*();");
3115  verifyGoogleFormat("operator SomeType<SomeType<int>>();");
3116}
3117
3118TEST_F(FormatTest, UnderstandsNewAndDelete) {
3119  verifyFormat("void f() {\n"
3120               "  A *a = new A;\n"
3121               "  A *a = new (placement) A;\n"
3122               "  delete a;\n"
3123               "  delete (A *)a;\n"
3124               "}");
3125}
3126
3127TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
3128  verifyFormat("int *f(int *a) {}");
3129  verifyFormat("int main(int argc, char **argv) {}");
3130  verifyFormat("Test::Test(int b) : a(b * b) {}");
3131  verifyIndependentOfContext("f(a, *a);");
3132  verifyFormat("void g() { f(*a); }");
3133  verifyIndependentOfContext("int a = b * 10;");
3134  verifyIndependentOfContext("int a = 10 * b;");
3135  verifyIndependentOfContext("int a = b * c;");
3136  verifyIndependentOfContext("int a += b * c;");
3137  verifyIndependentOfContext("int a -= b * c;");
3138  verifyIndependentOfContext("int a *= b * c;");
3139  verifyIndependentOfContext("int a /= b * c;");
3140  verifyIndependentOfContext("int a = *b;");
3141  verifyIndependentOfContext("int a = *b * c;");
3142  verifyIndependentOfContext("int a = b * *c;");
3143  verifyIndependentOfContext("return 10 * b;");
3144  verifyIndependentOfContext("return *b * *c;");
3145  verifyIndependentOfContext("return a & ~b;");
3146  verifyIndependentOfContext("f(b ? *c : *d);");
3147  verifyIndependentOfContext("int a = b ? *c : *d;");
3148  verifyIndependentOfContext("*b = a;");
3149  verifyIndependentOfContext("a * ~b;");
3150  verifyIndependentOfContext("a * !b;");
3151  verifyIndependentOfContext("a * +b;");
3152  verifyIndependentOfContext("a * -b;");
3153  verifyIndependentOfContext("a * ++b;");
3154  verifyIndependentOfContext("a * --b;");
3155  verifyIndependentOfContext("a[4] * b;");
3156  verifyIndependentOfContext("a[a * a] = 1;");
3157  verifyIndependentOfContext("f() * b;");
3158  verifyIndependentOfContext("a * [self dostuff];");
3159  verifyIndependentOfContext("int x = a * (a + b);");
3160  verifyIndependentOfContext("(a *)(a + b);");
3161  verifyIndependentOfContext("int *pa = (int *)&a;");
3162  verifyIndependentOfContext("return sizeof(int **);");
3163  verifyIndependentOfContext("return sizeof(int ******);");
3164  verifyIndependentOfContext("return (int **&)a;");
3165  verifyIndependentOfContext("f((*PointerToArray)[10]);");
3166  verifyFormat("void f(Type (*parameter)[10]) {}");
3167  verifyGoogleFormat("return sizeof(int**);");
3168  verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
3169  verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
3170  verifyFormat("auto a = [](int **&, int ***) {};");
3171
3172  verifyIndependentOfContext("InvalidRegions[*R] = 0;");
3173
3174  verifyIndependentOfContext("A<int *> a;");
3175  verifyIndependentOfContext("A<int **> a;");
3176  verifyIndependentOfContext("A<int *, int *> a;");
3177  verifyIndependentOfContext(
3178      "const char *const p = reinterpret_cast<const char *const>(q);");
3179  verifyIndependentOfContext("A<int **, int **> a;");
3180  verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);");
3181  verifyFormat("for (char **a = b; *a; ++a) {\n}");
3182  verifyFormat("for (; a && b;) {\n}");
3183
3184  verifyFormat(
3185      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
3186      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
3187
3188  verifyGoogleFormat("int main(int argc, char** argv) {}");
3189  verifyGoogleFormat("A<int*> a;");
3190  verifyGoogleFormat("A<int**> a;");
3191  verifyGoogleFormat("A<int*, int*> a;");
3192  verifyGoogleFormat("A<int**, int**> a;");
3193  verifyGoogleFormat("f(b ? *c : *d);");
3194  verifyGoogleFormat("int a = b ? *c : *d;");
3195  verifyGoogleFormat("Type* t = **x;");
3196  verifyGoogleFormat("Type* t = *++*x;");
3197  verifyGoogleFormat("*++*x;");
3198  verifyGoogleFormat("Type* t = const_cast<T*>(&*x);");
3199  verifyGoogleFormat("Type* t = x++ * y;");
3200  verifyGoogleFormat(
3201      "const char* const p = reinterpret_cast<const char* const>(q);");
3202
3203  verifyIndependentOfContext("a = *(x + y);");
3204  verifyIndependentOfContext("a = &(x + y);");
3205  verifyIndependentOfContext("*(x + y).call();");
3206  verifyIndependentOfContext("&(x + y)->call();");
3207  verifyFormat("void f() { &(*I).first; }");
3208
3209  verifyIndependentOfContext("f(b * /* confusing comment */ ++c);");
3210  verifyFormat(
3211      "int *MyValues = {\n"
3212      "  *A, // Operator detection might be confused by the '{'\n"
3213      "  *BB // Operator detection might be confused by previous comment\n"
3214      "};");
3215
3216  verifyIndependentOfContext("if (int *a = &b)");
3217  verifyIndependentOfContext("if (int &a = *b)");
3218  verifyIndependentOfContext("if (a & b[i])");
3219  verifyIndependentOfContext("if (a::b::c::d & b[i])");
3220  verifyIndependentOfContext("if (*b[i])");
3221  verifyIndependentOfContext("if (int *a = (&b))");
3222  verifyIndependentOfContext("while (int *a = &b)");
3223  verifyFormat("void f() {\n"
3224               "  for (const int &v : Values) {\n"
3225               "  }\n"
3226               "}");
3227  verifyFormat("for (int i = a * a; i < 10; ++i) {\n}");
3228  verifyFormat("for (int i = 0; i < a * a; ++i) {\n}");
3229
3230  verifyFormat("#define MACRO     \\\n"
3231               "  int *i = a * b; \\\n"
3232               "  void f(a *b);",
3233               getLLVMStyleWithColumns(19));
3234
3235  verifyIndependentOfContext("A = new SomeType *[Length];");
3236  verifyIndependentOfContext("A = new SomeType *[Length]();");
3237  verifyGoogleFormat("A = new SomeType* [Length]();");
3238  verifyGoogleFormat("A = new SomeType* [Length];");
3239
3240  FormatStyle PointerLeft = getLLVMStyle();
3241  PointerLeft.PointerBindsToType = true;
3242  verifyFormat("delete *x;", PointerLeft);
3243}
3244
3245TEST_F(FormatTest, UnderstandsEllipsis) {
3246  verifyFormat("int printf(const char *fmt, ...);");
3247  verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }");
3248}
3249
3250TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) {
3251  EXPECT_EQ("int *a;\n"
3252            "int *a;\n"
3253            "int *a;",
3254            format("int *a;\n"
3255                   "int* a;\n"
3256                   "int *a;",
3257                   getGoogleStyle()));
3258  EXPECT_EQ("int* a;\n"
3259            "int* a;\n"
3260            "int* a;",
3261            format("int* a;\n"
3262                   "int* a;\n"
3263                   "int *a;",
3264                   getGoogleStyle()));
3265  EXPECT_EQ("int *a;\n"
3266            "int *a;\n"
3267            "int *a;",
3268            format("int *a;\n"
3269                   "int * a;\n"
3270                   "int *  a;",
3271                   getGoogleStyle()));
3272}
3273
3274TEST_F(FormatTest, UnderstandsRvalueReferences) {
3275  verifyFormat("int f(int &&a) {}");
3276  verifyFormat("int f(int a, char &&b) {}");
3277  verifyFormat("void f() { int &&a = b; }");
3278  verifyGoogleFormat("int f(int a, char&& b) {}");
3279  verifyGoogleFormat("void f() { int&& a = b; }");
3280
3281  verifyIndependentOfContext("A<int &&> a;");
3282  verifyIndependentOfContext("A<int &&, int &&> a;");
3283  verifyGoogleFormat("A<int&&> a;");
3284  verifyGoogleFormat("A<int&&, int&&> a;");
3285}
3286
3287TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) {
3288  verifyFormat("void f() {\n"
3289               "  x[aaaaaaaaa -\n"
3290               "    b] = 23;\n"
3291               "}",
3292               getLLVMStyleWithColumns(15));
3293}
3294
3295TEST_F(FormatTest, FormatsCasts) {
3296  verifyFormat("Type *A = static_cast<Type *>(P);");
3297  verifyFormat("Type *A = (Type *)P;");
3298  verifyFormat("Type *A = (vector<Type *, int *>)P;");
3299  verifyFormat("int a = (int)(2.0f);");
3300  verifyFormat("int a = (int)2.0f;");
3301  verifyFormat("x[(int32)y];");
3302  verifyFormat("x = (int32)y;");
3303  verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)");
3304  verifyFormat("int a = (int)*b;");
3305  verifyFormat("int a = (int)2.0f;");
3306  verifyFormat("int a = (int)~0;");
3307  verifyFormat("int a = (int)++a;");
3308  verifyFormat("int a = (int)sizeof(int);");
3309  verifyFormat("int a = (int)+2;");
3310  verifyFormat("my_int a = (my_int)2.0f;");
3311  verifyFormat("my_int a = (my_int)sizeof(int);");
3312  verifyFormat("return (my_int)aaa;");
3313
3314  // FIXME: Without type knowledge, this can still fall apart miserably.
3315  verifyFormat("void f() { my_int a = (my_int) * b; }");
3316  verifyFormat("void f() { return P ? (my_int) * P : (my_int)0; }");
3317  verifyFormat("my_int a = (my_int) ~0;");
3318  verifyFormat("my_int a = (my_int)++ a;");
3319  verifyFormat("my_int a = (my_int) + 2;");
3320
3321  // These are not casts.
3322  verifyFormat("void f(int *) {}");
3323  verifyFormat("f(foo)->b;");
3324  verifyFormat("f(foo).b;");
3325  verifyFormat("f(foo)(b);");
3326  verifyFormat("f(foo)[b];");
3327  verifyFormat("[](foo) { return 4; }(bar)];");
3328  verifyFormat("(*funptr)(foo)[4];");
3329  verifyFormat("funptrs[4](foo)[4];");
3330  verifyFormat("void f(int *);");
3331  verifyFormat("void f(int *) = 0;");
3332  verifyFormat("void f(SmallVector<int>) {}");
3333  verifyFormat("void f(SmallVector<int>);");
3334  verifyFormat("void f(SmallVector<int>) = 0;");
3335  verifyFormat("void f(int i = (kValue) * kMask) {}");
3336  verifyFormat("void f(int i = (kA * kB) & kMask) {}");
3337  verifyFormat("int a = sizeof(int) * b;");
3338  verifyFormat("int a = alignof(int) * b;");
3339  verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;");
3340  verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");");
3341
3342  // These are not casts, but at some point were confused with casts.
3343  verifyFormat("virtual void foo(int *) override;");
3344  verifyFormat("virtual void foo(char &) const;");
3345  verifyFormat("virtual void foo(int *a, char *) const;");
3346  verifyFormat("int a = sizeof(int *) + b;");
3347  verifyFormat("int a = alignof(int *) + b;");
3348}
3349
3350TEST_F(FormatTest, FormatsFunctionTypes) {
3351  verifyFormat("A<bool()> a;");
3352  verifyFormat("A<SomeType()> a;");
3353  verifyFormat("A<void (*)(int, std::string)> a;");
3354  verifyFormat("A<void *(int)>;");
3355  verifyFormat("void *(*a)(int *, SomeType *);");
3356  verifyFormat("int (*func)(void *);");
3357  verifyFormat("void f() { int (*func)(void *); }");
3358
3359  verifyGoogleFormat("A<void*(int*, SomeType*)>;");
3360  verifyGoogleFormat("void* (*a)(int);");
3361
3362  // Other constructs can look somewhat like function types:
3363  verifyFormat("A<sizeof(*x)> a;");
3364  verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)");
3365}
3366
3367TEST_F(FormatTest, BreaksLongDeclarations) {
3368  verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n"
3369               "    AnotherNameForTheLongType;");
3370  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
3371               "    LoooooooooooooooooooooooooooooooooooooooongVariable;");
3372  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
3373               "    LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
3374  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
3375               "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
3376
3377  // FIXME: Without the comment, this breaks after "(".
3378  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType // break\n"
3379               "    (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();");
3380
3381  verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n"
3382               "                  int LoooooooooooooooooooongParam2) {}");
3383  verifyFormat(
3384      "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n"
3385      "                                   SourceLocation L, IdentifierIn *II,\n"
3386      "                                   Type *T) {}");
3387  verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n"
3388               "ReallyReallyLongFunctionName(\n"
3389               "    const std::string &SomeParameter,\n"
3390               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
3391               "        ReallyReallyLongParameterName,\n"
3392               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
3393               "        AnotherLongParameterName) {}");
3394  verifyFormat("template <typename A>\n"
3395               "SomeLoooooooooooooooooooooongType<\n"
3396               "    typename some_namespace::SomeOtherType<A>::Type>\n"
3397               "Function() {}");
3398  verifyFormat(
3399      "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n"
3400      "    aaaaaaaaaaaaaaaaaaaaaaa;");
3401
3402  verifyGoogleFormat(
3403      "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n"
3404      "                                   SourceLocation L) {}");
3405  verifyGoogleFormat(
3406      "some_namespace::LongReturnType\n"
3407      "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n"
3408      "    int first_long_parameter, int second_parameter) {}");
3409
3410  verifyGoogleFormat("template <typename T>\n"
3411                     "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n"
3412                     "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}");
3413  verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
3414                     "                   int aaaaaaaaaaaaaaaaaaaaaaa);");
3415}
3416
3417TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
3418  verifyFormat("(a)->b();");
3419  verifyFormat("--a;");
3420}
3421
3422TEST_F(FormatTest, HandlesIncludeDirectives) {
3423  verifyFormat("#include <string>\n"
3424               "#include <a/b/c.h>\n"
3425               "#include \"a/b/string\"\n"
3426               "#include \"string.h\"\n"
3427               "#include \"string.h\"\n"
3428               "#include <a-a>\n"
3429               "#include < path with space >\n"
3430               "#include \"abc.h\" // this is included for ABC\n"
3431               "#include \"some long include\" // with a comment\n"
3432               "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"",
3433               getLLVMStyleWithColumns(35));
3434
3435  verifyFormat("#import <string>");
3436  verifyFormat("#import <a/b/c.h>");
3437  verifyFormat("#import \"a/b/string\"");
3438  verifyFormat("#import \"string.h\"");
3439  verifyFormat("#import \"string.h\"");
3440}
3441
3442//===----------------------------------------------------------------------===//
3443// Error recovery tests.
3444//===----------------------------------------------------------------------===//
3445
3446TEST_F(FormatTest, IncompleteParameterLists) {
3447  FormatStyle NoBinPacking = getLLVMStyle();
3448  NoBinPacking.BinPackParameters = false;
3449  verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
3450               "                        double *min_x,\n"
3451               "                        double *max_x,\n"
3452               "                        double *min_y,\n"
3453               "                        double *max_y,\n"
3454               "                        double *min_z,\n"
3455               "                        double *max_z, ) {}",
3456               NoBinPacking);
3457}
3458
3459TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
3460  verifyFormat("void f() { return; }\n42");
3461  verifyFormat("void f() {\n"
3462               "  if (0)\n"
3463               "    return;\n"
3464               "}\n"
3465               "42");
3466  verifyFormat("void f() { return }\n42");
3467  verifyFormat("void f() {\n"
3468               "  if (0)\n"
3469               "    return\n"
3470               "}\n"
3471               "42");
3472}
3473
3474TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
3475  EXPECT_EQ("void f() { return }", format("void  f ( )  {  return  }"));
3476  EXPECT_EQ("void f() {\n"
3477            "  if (a)\n"
3478            "    return\n"
3479            "}",
3480            format("void  f  (  )  {  if  ( a )  return  }"));
3481  EXPECT_EQ("namespace N {\n"
3482            "void f()\n"
3483            "}",
3484            format("namespace  N  {  void f()  }"));
3485  EXPECT_EQ("namespace N {\n"
3486            "void f() {}\n"
3487            "void g()\n"
3488            "}",
3489            format("namespace N  { void f( ) { } void g( ) }"));
3490}
3491
3492TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
3493  verifyFormat("int aaaaaaaa =\n"
3494               "    // Overlylongcomment\n"
3495               "    b;",
3496               getLLVMStyleWithColumns(20));
3497  verifyFormat("function(\n"
3498               "    ShortArgument,\n"
3499               "    LoooooooooooongArgument);\n",
3500               getLLVMStyleWithColumns(20));
3501}
3502
3503TEST_F(FormatTest, IncorrectAccessSpecifier) {
3504  verifyFormat("public:");
3505  verifyFormat("class A {\n"
3506               "public\n"
3507               "  void f() {}\n"
3508               "};");
3509  verifyFormat("public\n"
3510               "int qwerty;");
3511  verifyFormat("public\n"
3512               "B {}");
3513  verifyFormat("public\n"
3514               "{}");
3515  verifyFormat("public\n"
3516               "B { int x; }");
3517}
3518
3519TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
3520  verifyFormat("{");
3521  verifyFormat("#})");
3522}
3523
3524TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
3525  verifyFormat("do {\n}");
3526  verifyFormat("do {\n}\n"
3527               "f();");
3528  verifyFormat("do {\n}\n"
3529               "wheeee(fun);");
3530  verifyFormat("do {\n"
3531               "  f();\n"
3532               "}");
3533}
3534
3535TEST_F(FormatTest, IncorrectCodeMissingParens) {
3536  verifyFormat("if {\n  foo;\n  foo();\n}");
3537  verifyFormat("switch {\n  foo;\n  foo();\n}");
3538  verifyFormat("for {\n  foo;\n  foo();\n}");
3539  verifyFormat("while {\n  foo;\n  foo();\n}");
3540  verifyFormat("do {\n  foo;\n  foo();\n} while;");
3541}
3542
3543TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
3544  verifyFormat("namespace {\n"
3545               "class Foo {  Foo  (\n"
3546               "};\n"
3547               "} // comment");
3548}
3549
3550TEST_F(FormatTest, IncorrectCodeErrorDetection) {
3551  EXPECT_EQ("{\n{}\n", format("{\n{\n}\n"));
3552  EXPECT_EQ("{\n  {}\n", format("{\n  {\n}\n"));
3553  EXPECT_EQ("{\n  {}\n", format("{\n  {\n  }\n"));
3554  EXPECT_EQ("{\n  {}\n  }\n}\n", format("{\n  {\n    }\n  }\n}\n"));
3555
3556  EXPECT_EQ("{\n"
3557            "    {\n"
3558            " breakme(\n"
3559            "     qwe);\n"
3560            "}\n",
3561            format("{\n"
3562                   "    {\n"
3563                   " breakme(qwe);\n"
3564                   "}\n",
3565                   getLLVMStyleWithColumns(10)));
3566}
3567
3568TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
3569  verifyFormat("int x = {\n"
3570               "  avariable,\n"
3571               "  b(alongervariable)\n"
3572               "};",
3573               getLLVMStyleWithColumns(25));
3574}
3575
3576TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
3577  verifyFormat("return (a)(b) { 1, 2, 3 };");
3578}
3579
3580TEST_F(FormatTest, LayoutCxx11ConstructorBraceInitializers) {
3581    verifyFormat("vector<int> x{ 1, 2, 3, 4 };");
3582    verifyFormat("vector<T> x{ {}, {}, {}, {} };");
3583    verifyFormat("f({ 1, 2 });");
3584    verifyFormat("auto v = Foo{ 1 };");
3585    verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });");
3586    verifyFormat("Class::Class : member{ 1, 2, 3 } {}");
3587    verifyFormat("new vector<int>{ 1, 2, 3 };");
3588    verifyFormat("new int[3]{ 1, 2, 3 };");
3589    verifyFormat("return { arg1, arg2 };");
3590    verifyFormat("return { arg1, SomeType{ parameter } };");
3591    verifyFormat("new T{ arg1, arg2 };");
3592    verifyFormat("class Class {\n"
3593                 "  T member = { arg1, arg2 };\n"
3594                 "};");
3595    verifyFormat(
3596        "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
3597        "                                 aaaaaaaaaaaaaaaaaaaa, aaaaa }\n"
3598        "                  : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
3599        "                                 bbbbbbbbbbbbbbbbbbbb, bbbbb };");
3600
3601    FormatStyle NoSpaces = getLLVMStyle();
3602    NoSpaces.SpacesInBracedLists = false;
3603    verifyFormat("vector<int> x{1, 2, 3, 4};", NoSpaces);
3604    verifyFormat("vector<T> x{{}, {}, {}, {}};", NoSpaces);
3605    verifyFormat("f({1, 2});", NoSpaces);
3606    verifyFormat("auto v = Foo{-1};", NoSpaces);
3607    verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});", NoSpaces);
3608    verifyFormat("Class::Class : member{1, 2, 3} {}", NoSpaces);
3609    verifyFormat("new vector<int>{1, 2, 3};", NoSpaces);
3610    verifyFormat("new int[3]{1, 2, 3};", NoSpaces);
3611    verifyFormat("return {arg1, arg2};", NoSpaces);
3612    verifyFormat("return {arg1, SomeType{parameter}};", NoSpaces);
3613    verifyFormat("new T{arg1, arg2};", NoSpaces);
3614    verifyFormat("class Class {\n"
3615                 "  T member = {arg1, arg2};\n"
3616                 "};",
3617                 NoSpaces);
3618}
3619
3620TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
3621  verifyFormat("void f() { return 42; }");
3622  verifyFormat("void f() {\n"
3623               "  // Comment\n"
3624               "}");
3625  verifyFormat("{\n"
3626               "#error {\n"
3627               "  int a;\n"
3628               "}");
3629  verifyFormat("{\n"
3630               "  int a;\n"
3631               "#error {\n"
3632               "}");
3633  verifyFormat("void f() {} // comment");
3634  verifyFormat("void f() { int a; } // comment");
3635  verifyFormat("void f() {\n"
3636               "} // comment",
3637               getLLVMStyleWithColumns(15));
3638
3639  verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
3640  verifyFormat("void f() {\n  return 42;\n}", getLLVMStyleWithColumns(22));
3641
3642  verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
3643  verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
3644}
3645
3646TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
3647  // Elaborate type variable declarations.
3648  verifyFormat("struct foo a = { bar };\nint n;");
3649  verifyFormat("class foo a = { bar };\nint n;");
3650  verifyFormat("union foo a = { bar };\nint n;");
3651
3652  // Elaborate types inside function definitions.
3653  verifyFormat("struct foo f() {}\nint n;");
3654  verifyFormat("class foo f() {}\nint n;");
3655  verifyFormat("union foo f() {}\nint n;");
3656
3657  // Templates.
3658  verifyFormat("template <class X> void f() {}\nint n;");
3659  verifyFormat("template <struct X> void f() {}\nint n;");
3660  verifyFormat("template <union X> void f() {}\nint n;");
3661
3662  // Actual definitions...
3663  verifyFormat("struct {\n} n;");
3664  verifyFormat(
3665      "template <template <class T, class Y>, class Z> class X {\n} n;");
3666  verifyFormat("union Z {\n  int n;\n} x;");
3667  verifyFormat("class MACRO Z {\n} n;");
3668  verifyFormat("class MACRO(X) Z {\n} n;");
3669  verifyFormat("class __attribute__(X) Z {\n} n;");
3670  verifyFormat("class __declspec(X) Z {\n} n;");
3671  verifyFormat("class A##B##C {\n} n;");
3672
3673  // Redefinition from nested context:
3674  verifyFormat("class A::B::C {\n} n;");
3675
3676  // Template definitions.
3677  verifyFormat(
3678      "template <typename F>\n"
3679      "Matcher(const Matcher<F> &Other,\n"
3680      "        typename enable_if_c<is_base_of<F, T>::value &&\n"
3681      "                             !is_same<F, T>::value>::type * = 0)\n"
3682      "    : Implementation(new ImplicitCastMatcher<F>(Other)) {}");
3683
3684  // FIXME: This is still incorrectly handled at the formatter side.
3685  verifyFormat("template <> struct X < 15, i < 3 && 42 < 50 && 33<28> {};");
3686
3687  // FIXME:
3688  // This now gets parsed incorrectly as class definition.
3689  // verifyFormat("class A<int> f() {\n}\nint n;");
3690
3691  // Elaborate types where incorrectly parsing the structural element would
3692  // break the indent.
3693  verifyFormat("if (true)\n"
3694               "  class X x;\n"
3695               "else\n"
3696               "  f();\n");
3697
3698  // This is simply incomplete. Formatting is not important, but must not crash.
3699  verifyFormat("class A:");
3700}
3701
3702TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
3703  verifyFormat("#error Leave     all         white!!!!! space* alone!\n");
3704  verifyFormat("#warning Leave     all         white!!!!! space* alone!\n");
3705  EXPECT_EQ("#error 1", format("  #  error   1"));
3706  EXPECT_EQ("#warning 1", format("  #  warning 1"));
3707}
3708
3709TEST_F(FormatTest, FormatHashIfExpressions) {
3710  // FIXME: Come up with a better indentation for #elif.
3711  verifyFormat(
3712      "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) &&  \\\n"
3713      "    defined(BBBBBBBB)\n"
3714      "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) &&  \\\n"
3715      "    defined(BBBBBBBB)\n"
3716      "#endif",
3717      getLLVMStyleWithColumns(65));
3718}
3719
3720TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
3721  FormatStyle AllowsMergedIf = getGoogleStyle();
3722  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
3723  verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
3724  verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
3725  verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
3726  EXPECT_EQ("if (true) return 42;",
3727            format("if (true)\nreturn 42;", AllowsMergedIf));
3728  FormatStyle ShortMergedIf = AllowsMergedIf;
3729  ShortMergedIf.ColumnLimit = 25;
3730  verifyFormat("#define A \\\n"
3731               "  if (true) return 42;",
3732               ShortMergedIf);
3733  verifyFormat("#define A \\\n"
3734               "  f();    \\\n"
3735               "  if (true)\n"
3736               "#define B",
3737               ShortMergedIf);
3738  verifyFormat("#define A \\\n"
3739               "  f();    \\\n"
3740               "  if (true)\n"
3741               "g();",
3742               ShortMergedIf);
3743  verifyFormat("{\n"
3744               "#ifdef A\n"
3745               "  // Comment\n"
3746               "  if (true) continue;\n"
3747               "#endif\n"
3748               "  // Comment\n"
3749               "  if (true) continue;",
3750               ShortMergedIf);
3751}
3752
3753TEST_F(FormatTest, BlockCommentsInControlLoops) {
3754  verifyFormat("if (0) /* a comment in a strange place */ {\n"
3755               "  f();\n"
3756               "}");
3757  verifyFormat("if (0) /* a comment in a strange place */ {\n"
3758               "  f();\n"
3759               "} /* another comment */ else /* comment #3 */ {\n"
3760               "  g();\n"
3761               "}");
3762  verifyFormat("while (0) /* a comment in a strange place */ {\n"
3763               "  f();\n"
3764               "}");
3765  verifyFormat("for (;;) /* a comment in a strange place */ {\n"
3766               "  f();\n"
3767               "}");
3768  verifyFormat("do /* a comment in a strange place */ {\n"
3769               "  f();\n"
3770               "} /* another comment */ while (0);");
3771}
3772
3773TEST_F(FormatTest, BlockComments) {
3774  EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */",
3775            format("/* *//* */  /* */\n/* *//* */  /* */"));
3776  EXPECT_EQ("/* */ a /* */ b;", format("  /* */  a/* */  b;"));
3777  EXPECT_EQ("#define A /*123*/\\\n"
3778            "  b\n"
3779            "/* */\n"
3780            "someCall(\n"
3781            "    parameter);",
3782            format("#define A /*123*/ b\n"
3783                   "/* */\n"
3784                   "someCall(parameter);",
3785                   getLLVMStyleWithColumns(15)));
3786
3787  EXPECT_EQ("#define A\n"
3788            "/* */ someCall(\n"
3789            "    parameter);",
3790            format("#define A\n"
3791                   "/* */someCall(parameter);",
3792                   getLLVMStyleWithColumns(15)));
3793  EXPECT_EQ("/*\n**\n*/", format("/*\n**\n*/"));
3794  EXPECT_EQ("/*\n"
3795            "*\n"
3796            " * aaaaaa\n"
3797            "* aaaaaa\n"
3798            "*/",
3799            format("/*\n"
3800                   "*\n"
3801                   " * aaaaaa aaaaaa\n"
3802                   "*/",
3803                   getLLVMStyleWithColumns(10)));
3804  EXPECT_EQ("/*\n"
3805            "**\n"
3806            "* aaaaaa\n"
3807            "* aaaaaa\n"
3808            "*/",
3809            format("/*\n"
3810                   "**\n"
3811                   "* aaaaaa aaaaaa\n"
3812                   "*/",
3813                   getLLVMStyleWithColumns(10)));
3814
3815  FormatStyle NoBinPacking = getLLVMStyle();
3816  NoBinPacking.BinPackParameters = false;
3817  EXPECT_EQ("someFunction(1, /* comment 1 */\n"
3818            "             2, /* comment 2 */\n"
3819            "             3, /* comment 3 */\n"
3820            "             aaaa,\n"
3821            "             bbbb);",
3822            format("someFunction (1,   /* comment 1 */\n"
3823                   "                2, /* comment 2 */  \n"
3824                   "               3,   /* comment 3 */\n"
3825                   "aaaa, bbbb );",
3826                   NoBinPacking));
3827  verifyFormat(
3828      "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
3829      "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
3830  EXPECT_EQ(
3831      "bool aaaaaaaaaaaaa = /* trailing comment */\n"
3832      "    aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
3833      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;",
3834      format(
3835          "bool       aaaaaaaaaaaaa =       /* trailing comment */\n"
3836          "    aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa    ||\n"
3837          "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa   || aaaaaaaaaaaaaaaaaaaaaaaaaa;"));
3838  EXPECT_EQ(
3839      "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
3840      "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;   /* comment */\n"
3841      "int cccccccccccccccccccccccccccccc;       /* comment */\n",
3842      format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
3843             "int      bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
3844             "int    cccccccccccccccccccccccccccccc;  /* comment */\n"));
3845}
3846
3847TEST_F(FormatTest, BlockCommentsInMacros) {
3848  EXPECT_EQ("#define A          \\\n"
3849            "  {                \\\n"
3850            "    /* one line */ \\\n"
3851            "    someCall();",
3852            format("#define A {        \\\n"
3853                   "  /* one line */   \\\n"
3854                   "  someCall();",
3855                   getLLVMStyleWithColumns(20)));
3856  EXPECT_EQ("#define A          \\\n"
3857            "  {                \\\n"
3858            "    /* previous */ \\\n"
3859            "    /* one line */ \\\n"
3860            "    someCall();",
3861            format("#define A {        \\\n"
3862                   "  /* previous */   \\\n"
3863                   "  /* one line */   \\\n"
3864                   "  someCall();",
3865                   getLLVMStyleWithColumns(20)));
3866}
3867
3868TEST_F(FormatTest, BlockCommentsAtEndOfLine) {
3869  EXPECT_EQ("a = {\n"
3870            "  1111 /*    */\n"
3871            "};",
3872            format("a = {1111 /*    */\n"
3873                   "};",
3874                   getLLVMStyleWithColumns(15)));
3875  EXPECT_EQ("a = {\n"
3876            "  1111 /*      */\n"
3877            "};",
3878            format("a = {1111 /*      */\n"
3879                   "};",
3880                   getLLVMStyleWithColumns(15)));
3881
3882  // FIXME: The formatting is still wrong here.
3883  EXPECT_EQ("a = {\n"
3884            "  1111 /*      a\n"
3885            "          */\n"
3886            "};",
3887            format("a = {1111 /*      a */\n"
3888                   "};",
3889                   getLLVMStyleWithColumns(15)));
3890}
3891
3892TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) {
3893  // FIXME: This is not what we want...
3894  verifyFormat("{\n"
3895               "// a"
3896               "// b");
3897}
3898
3899TEST_F(FormatTest, FormatStarDependingOnContext) {
3900  verifyFormat("void f(int *a);");
3901  verifyFormat("void f() { f(fint * b); }");
3902  verifyFormat("class A {\n  void f(int *a);\n};");
3903  verifyFormat("class A {\n  int *a;\n};");
3904  verifyFormat("namespace a {\n"
3905               "namespace b {\n"
3906               "class A {\n"
3907               "  void f() {}\n"
3908               "  int *a;\n"
3909               "};\n"
3910               "}\n"
3911               "}");
3912}
3913
3914TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
3915  verifyFormat("while");
3916  verifyFormat("operator");
3917}
3918
3919//===----------------------------------------------------------------------===//
3920// Objective-C tests.
3921//===----------------------------------------------------------------------===//
3922
3923TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
3924  verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
3925  EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
3926            format("-(NSUInteger)indexOfObject:(id)anObject;"));
3927  EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
3928  EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
3929  EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
3930            format("-(NSInteger)Method3:(id)anObject;"));
3931  EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
3932            format("-(NSInteger)Method4:(id)anObject;"));
3933  EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
3934            format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
3935  EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
3936            format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
3937  EXPECT_EQ(
3938      "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;",
3939      format(
3940          "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;"));
3941
3942  // Very long objectiveC method declaration.
3943  verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
3944               "                    inRange:(NSRange)range\n"
3945               "                   outRange:(NSRange)out_range\n"
3946               "                  outRange1:(NSRange)out_range1\n"
3947               "                  outRange2:(NSRange)out_range2\n"
3948               "                  outRange3:(NSRange)out_range3\n"
3949               "                  outRange4:(NSRange)out_range4\n"
3950               "                  outRange5:(NSRange)out_range5\n"
3951               "                  outRange6:(NSRange)out_range6\n"
3952               "                  outRange7:(NSRange)out_range7\n"
3953               "                  outRange8:(NSRange)out_range8\n"
3954               "                  outRange9:(NSRange)out_range9;");
3955
3956  verifyFormat("- (int)sum:(vector<int>)numbers;");
3957  verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
3958  // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
3959  // protocol lists (but not for template classes):
3960  //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
3961
3962  verifyFormat("- (int (*)())foo:(int (*)())f;");
3963  verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;");
3964
3965  // If there's no return type (very rare in practice!), LLVM and Google style
3966  // agree.
3967  verifyFormat("- foo;");
3968  verifyFormat("- foo:(int)f;");
3969  verifyGoogleFormat("- foo:(int)foo;");
3970}
3971
3972TEST_F(FormatTest, FormatObjCBlocks) {
3973  verifyFormat("int (^Block)(int, int);");
3974  verifyFormat("int (^Block1)(int, int) = ^(int i, int j)");
3975}
3976
3977TEST_F(FormatTest, FormatObjCInterface) {
3978  verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n"
3979               "@public\n"
3980               "  int field1;\n"
3981               "@protected\n"
3982               "  int field2;\n"
3983               "@private\n"
3984               "  int field3;\n"
3985               "@package\n"
3986               "  int field4;\n"
3987               "}\n"
3988               "+ (id)init;\n"
3989               "@end");
3990
3991  verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n"
3992                     " @public\n"
3993                     "  int field1;\n"
3994                     " @protected\n"
3995                     "  int field2;\n"
3996                     " @private\n"
3997                     "  int field3;\n"
3998                     " @package\n"
3999                     "  int field4;\n"
4000                     "}\n"
4001                     "+ (id)init;\n"
4002                     "@end");
4003
4004  verifyFormat("@interface /* wait for it */ Foo\n"
4005               "+ (id)init;\n"
4006               "// Look, a comment!\n"
4007               "- (int)answerWith:(int)i;\n"
4008               "@end");
4009
4010  verifyFormat("@interface Foo\n"
4011               "@end\n"
4012               "@interface Bar\n"
4013               "@end");
4014
4015  verifyFormat("@interface Foo : Bar\n"
4016               "+ (id)init;\n"
4017               "@end");
4018
4019  verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n"
4020               "+ (id)init;\n"
4021               "@end");
4022
4023  verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n"
4024                     "+ (id)init;\n"
4025                     "@end");
4026
4027  verifyFormat("@interface Foo (HackStuff)\n"
4028               "+ (id)init;\n"
4029               "@end");
4030
4031  verifyFormat("@interface Foo ()\n"
4032               "+ (id)init;\n"
4033               "@end");
4034
4035  verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n"
4036               "+ (id)init;\n"
4037               "@end");
4038
4039  verifyGoogleFormat("@interface Foo (HackStuff)<MyProtocol>\n"
4040                     "+ (id)init;\n"
4041                     "@end");
4042
4043  verifyFormat("@interface Foo {\n"
4044               "  int _i;\n"
4045               "}\n"
4046               "+ (id)init;\n"
4047               "@end");
4048
4049  verifyFormat("@interface Foo : Bar {\n"
4050               "  int _i;\n"
4051               "}\n"
4052               "+ (id)init;\n"
4053               "@end");
4054
4055  verifyFormat("@interface Foo : Bar <Baz, Quux> {\n"
4056               "  int _i;\n"
4057               "}\n"
4058               "+ (id)init;\n"
4059               "@end");
4060
4061  verifyFormat("@interface Foo (HackStuff) {\n"
4062               "  int _i;\n"
4063               "}\n"
4064               "+ (id)init;\n"
4065               "@end");
4066
4067  verifyFormat("@interface Foo () {\n"
4068               "  int _i;\n"
4069               "}\n"
4070               "+ (id)init;\n"
4071               "@end");
4072
4073  verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n"
4074               "  int _i;\n"
4075               "}\n"
4076               "+ (id)init;\n"
4077               "@end");
4078}
4079
4080TEST_F(FormatTest, FormatObjCImplementation) {
4081  verifyFormat("@implementation Foo : NSObject {\n"
4082               "@public\n"
4083               "  int field1;\n"
4084               "@protected\n"
4085               "  int field2;\n"
4086               "@private\n"
4087               "  int field3;\n"
4088               "@package\n"
4089               "  int field4;\n"
4090               "}\n"
4091               "+ (id)init {\n}\n"
4092               "@end");
4093
4094  verifyGoogleFormat("@implementation Foo : NSObject {\n"
4095                     " @public\n"
4096                     "  int field1;\n"
4097                     " @protected\n"
4098                     "  int field2;\n"
4099                     " @private\n"
4100                     "  int field3;\n"
4101                     " @package\n"
4102                     "  int field4;\n"
4103                     "}\n"
4104                     "+ (id)init {\n}\n"
4105                     "@end");
4106
4107  verifyFormat("@implementation Foo\n"
4108               "+ (id)init {\n"
4109               "  if (true)\n"
4110               "    return nil;\n"
4111               "}\n"
4112               "// Look, a comment!\n"
4113               "- (int)answerWith:(int)i {\n"
4114               "  return i;\n"
4115               "}\n"
4116               "+ (int)answerWith:(int)i {\n"
4117               "  return i;\n"
4118               "}\n"
4119               "@end");
4120
4121  verifyFormat("@implementation Foo\n"
4122               "@end\n"
4123               "@implementation Bar\n"
4124               "@end");
4125
4126  verifyFormat("@implementation Foo : Bar\n"
4127               "+ (id)init {\n}\n"
4128               "- (void)foo {\n}\n"
4129               "@end");
4130
4131  verifyFormat("@implementation Foo {\n"
4132               "  int _i;\n"
4133               "}\n"
4134               "+ (id)init {\n}\n"
4135               "@end");
4136
4137  verifyFormat("@implementation Foo : Bar {\n"
4138               "  int _i;\n"
4139               "}\n"
4140               "+ (id)init {\n}\n"
4141               "@end");
4142
4143  verifyFormat("@implementation Foo (HackStuff)\n"
4144               "+ (id)init {\n}\n"
4145               "@end");
4146}
4147
4148TEST_F(FormatTest, FormatObjCProtocol) {
4149  verifyFormat("@protocol Foo\n"
4150               "@property(weak) id delegate;\n"
4151               "- (NSUInteger)numberOfThings;\n"
4152               "@end");
4153
4154  verifyFormat("@protocol MyProtocol <NSObject>\n"
4155               "- (NSUInteger)numberOfThings;\n"
4156               "@end");
4157
4158  verifyGoogleFormat("@protocol MyProtocol<NSObject>\n"
4159                     "- (NSUInteger)numberOfThings;\n"
4160                     "@end");
4161
4162  verifyFormat("@protocol Foo;\n"
4163               "@protocol Bar;\n");
4164
4165  verifyFormat("@protocol Foo\n"
4166               "@end\n"
4167               "@protocol Bar\n"
4168               "@end");
4169
4170  verifyFormat("@protocol myProtocol\n"
4171               "- (void)mandatoryWithInt:(int)i;\n"
4172               "@optional\n"
4173               "- (void)optional;\n"
4174               "@required\n"
4175               "- (void)required;\n"
4176               "@optional\n"
4177               "@property(assign) int madProp;\n"
4178               "@end\n");
4179}
4180
4181TEST_F(FormatTest, FormatObjCMethodDeclarations) {
4182  verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n"
4183               "                   rect:(NSRect)theRect\n"
4184               "               interval:(float)theInterval {\n"
4185               "}");
4186  verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n"
4187               "          longKeyword:(NSRect)theRect\n"
4188               "    evenLongerKeyword:(float)theInterval\n"
4189               "                error:(NSError **)theError {\n"
4190               "}");
4191}
4192
4193TEST_F(FormatTest, FormatObjCMethodExpr) {
4194  verifyFormat("[foo bar:baz];");
4195  verifyFormat("return [foo bar:baz];");
4196  verifyFormat("f([foo bar:baz]);");
4197  verifyFormat("f(2, [foo bar:baz]);");
4198  verifyFormat("f(2, a ? b : c);");
4199  verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];");
4200
4201  // Unary operators.
4202  verifyFormat("int a = +[foo bar:baz];");
4203  verifyFormat("int a = -[foo bar:baz];");
4204  verifyFormat("int a = ![foo bar:baz];");
4205  verifyFormat("int a = ~[foo bar:baz];");
4206  verifyFormat("int a = ++[foo bar:baz];");
4207  verifyFormat("int a = --[foo bar:baz];");
4208  verifyFormat("int a = sizeof [foo bar:baz];");
4209  verifyFormat("int a = alignof [foo bar:baz];");
4210  verifyFormat("int a = &[foo bar:baz];");
4211  verifyFormat("int a = *[foo bar:baz];");
4212  // FIXME: Make casts work, without breaking f()[4].
4213  //verifyFormat("int a = (int)[foo bar:baz];");
4214  //verifyFormat("return (int)[foo bar:baz];");
4215  //verifyFormat("(void)[foo bar:baz];");
4216  verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];");
4217
4218  // Binary operators.
4219  verifyFormat("[foo bar:baz], [foo bar:baz];");
4220  verifyFormat("[foo bar:baz] = [foo bar:baz];");
4221  verifyFormat("[foo bar:baz] *= [foo bar:baz];");
4222  verifyFormat("[foo bar:baz] /= [foo bar:baz];");
4223  verifyFormat("[foo bar:baz] %= [foo bar:baz];");
4224  verifyFormat("[foo bar:baz] += [foo bar:baz];");
4225  verifyFormat("[foo bar:baz] -= [foo bar:baz];");
4226  verifyFormat("[foo bar:baz] <<= [foo bar:baz];");
4227  verifyFormat("[foo bar:baz] >>= [foo bar:baz];");
4228  verifyFormat("[foo bar:baz] &= [foo bar:baz];");
4229  verifyFormat("[foo bar:baz] ^= [foo bar:baz];");
4230  verifyFormat("[foo bar:baz] |= [foo bar:baz];");
4231  verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];");
4232  verifyFormat("[foo bar:baz] || [foo bar:baz];");
4233  verifyFormat("[foo bar:baz] && [foo bar:baz];");
4234  verifyFormat("[foo bar:baz] | [foo bar:baz];");
4235  verifyFormat("[foo bar:baz] ^ [foo bar:baz];");
4236  verifyFormat("[foo bar:baz] & [foo bar:baz];");
4237  verifyFormat("[foo bar:baz] == [foo bar:baz];");
4238  verifyFormat("[foo bar:baz] != [foo bar:baz];");
4239  verifyFormat("[foo bar:baz] >= [foo bar:baz];");
4240  verifyFormat("[foo bar:baz] <= [foo bar:baz];");
4241  verifyFormat("[foo bar:baz] > [foo bar:baz];");
4242  verifyFormat("[foo bar:baz] < [foo bar:baz];");
4243  verifyFormat("[foo bar:baz] >> [foo bar:baz];");
4244  verifyFormat("[foo bar:baz] << [foo bar:baz];");
4245  verifyFormat("[foo bar:baz] - [foo bar:baz];");
4246  verifyFormat("[foo bar:baz] + [foo bar:baz];");
4247  verifyFormat("[foo bar:baz] * [foo bar:baz];");
4248  verifyFormat("[foo bar:baz] / [foo bar:baz];");
4249  verifyFormat("[foo bar:baz] % [foo bar:baz];");
4250  // Whew!
4251
4252  verifyFormat("return in[42];");
4253  verifyFormat("for (id foo in [self getStuffFor:bla]) {\n"
4254               "}");
4255
4256  verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];");
4257  verifyFormat("[self stuffWithInt:a ? b : c float:4.5];");
4258  verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];");
4259  verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];");
4260  verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]");
4261  verifyFormat("[button setAction:@selector(zoomOut:)];");
4262  verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];");
4263
4264  verifyFormat("arr[[self indexForFoo:a]];");
4265  verifyFormat("throw [self errorFor:a];");
4266  verifyFormat("@throw [self errorFor:a];");
4267
4268  // This tests that the formatter doesn't break after "backing" but before ":",
4269  // which would be at 80 columns.
4270  verifyFormat(
4271      "void f() {\n"
4272      "  if ((self = [super initWithContentRect:contentRect\n"
4273      "                               styleMask:styleMask\n"
4274      "                                 backing:NSBackingStoreBuffered\n"
4275      "                                   defer:YES]))");
4276
4277  verifyFormat(
4278      "[foo checkThatBreakingAfterColonWorksOk:\n"
4279      "        [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];");
4280
4281  verifyFormat("[myObj short:arg1 // Force line break\n"
4282               "          longKeyword:arg2\n"
4283               "    evenLongerKeyword:arg3\n"
4284               "                error:arg4];");
4285  verifyFormat(
4286      "void f() {\n"
4287      "  popup_window_.reset([[RenderWidgetPopupWindow alloc]\n"
4288      "      initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n"
4289      "                                     pos.width(), pos.height())\n"
4290      "                styleMask:NSBorderlessWindowMask\n"
4291      "                  backing:NSBackingStoreBuffered\n"
4292      "                    defer:NO]);\n"
4293      "}");
4294  verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n"
4295               "                             with:contentsNativeView];");
4296
4297  verifyFormat(
4298      "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n"
4299      "           owner:nillllll];");
4300
4301  verifyFormat(
4302      "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n"
4303      "        forType:kBookmarkButtonDragType];");
4304
4305  verifyFormat("[defaultCenter addObserver:self\n"
4306               "                  selector:@selector(willEnterFullscreen)\n"
4307               "                      name:kWillEnterFullscreenNotification\n"
4308               "                    object:nil];");
4309  verifyFormat("[image_rep drawInRect:drawRect\n"
4310               "             fromRect:NSZeroRect\n"
4311               "            operation:NSCompositeCopy\n"
4312               "             fraction:1.0\n"
4313               "       respectFlipped:NO\n"
4314               "                hints:nil];");
4315
4316  verifyFormat(
4317      "scoped_nsobject<NSTextField> message(\n"
4318      "    // The frame will be fixed up when |-setMessageText:| is called.\n"
4319      "    [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);");
4320}
4321
4322TEST_F(FormatTest, ObjCAt) {
4323  verifyFormat("@autoreleasepool");
4324  verifyFormat("@catch");
4325  verifyFormat("@class");
4326  verifyFormat("@compatibility_alias");
4327  verifyFormat("@defs");
4328  verifyFormat("@dynamic");
4329  verifyFormat("@encode");
4330  verifyFormat("@end");
4331  verifyFormat("@finally");
4332  verifyFormat("@implementation");
4333  verifyFormat("@import");
4334  verifyFormat("@interface");
4335  verifyFormat("@optional");
4336  verifyFormat("@package");
4337  verifyFormat("@private");
4338  verifyFormat("@property");
4339  verifyFormat("@protected");
4340  verifyFormat("@protocol");
4341  verifyFormat("@public");
4342  verifyFormat("@required");
4343  verifyFormat("@selector");
4344  verifyFormat("@synchronized");
4345  verifyFormat("@synthesize");
4346  verifyFormat("@throw");
4347  verifyFormat("@try");
4348
4349  EXPECT_EQ("@interface", format("@ interface"));
4350
4351  // The precise formatting of this doesn't matter, nobody writes code like
4352  // this.
4353  verifyFormat("@ /*foo*/ interface");
4354}
4355
4356TEST_F(FormatTest, ObjCSnippets) {
4357  verifyFormat("@autoreleasepool {\n"
4358               "  foo();\n"
4359               "}");
4360  verifyFormat("@class Foo, Bar;");
4361  verifyFormat("@compatibility_alias AliasName ExistingClass;");
4362  verifyFormat("@dynamic textColor;");
4363  verifyFormat("char *buf1 = @encode(int *);");
4364  verifyFormat("char *buf1 = @encode(typeof(4 * 5));");
4365  verifyFormat("char *buf1 = @encode(int **);");
4366  verifyFormat("Protocol *proto = @protocol(p1);");
4367  verifyFormat("SEL s = @selector(foo:);");
4368  verifyFormat("@synchronized(self) {\n"
4369               "  f();\n"
4370               "}");
4371
4372  verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
4373  verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
4374
4375  verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;");
4376  verifyFormat("@property(assign, getter=isEditable) BOOL editable;");
4377  verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;");
4378}
4379
4380TEST_F(FormatTest, ObjCLiterals) {
4381  verifyFormat("@\"String\"");
4382  verifyFormat("@1");
4383  verifyFormat("@+4.8");
4384  verifyFormat("@-4");
4385  verifyFormat("@1LL");
4386  verifyFormat("@.5");
4387  verifyFormat("@'c'");
4388  verifyFormat("@true");
4389
4390  verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);");
4391  verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);");
4392  verifyFormat("NSNumber *favoriteColor = @(Green);");
4393  verifyFormat("NSString *path = @(getenv(\"PATH\"));");
4394
4395  verifyFormat("@[");
4396  verifyFormat("@[]");
4397  verifyFormat(
4398      "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];");
4399  verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];");
4400
4401  verifyFormat("@{");
4402  verifyFormat("@{}");
4403  verifyFormat("@{ @\"one\" : @1 }");
4404  verifyFormat("return @{ @\"one\" : @1 };");
4405  verifyFormat("@{ @\"one\" : @1, }");
4406
4407  verifyFormat("@{ @\"one\" : @{ @2 : @1 } }");
4408  verifyFormat("@{ @\"one\" : @{ @2 : @1 }, }");
4409
4410  verifyFormat("@{ 1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2 }");
4411  verifyFormat("[self setDict:@{}");
4412  verifyFormat("[self setDict:@{ @1 : @2 }");
4413  verifyFormat("NSLog(@\"%@\", @{ @1 : @2, @2 : @3 }[@1]);");
4414  verifyFormat(
4415      "NSDictionary *masses = @{ @\"H\" : @1.0078, @\"He\" : @4.0026 };");
4416  verifyFormat(
4417      "NSDictionary *settings = @{ AVEncoderKey : @(AVAudioQualityMax) };");
4418
4419  // FIXME: Nested and multi-line array and dictionary literals need more work.
4420  verifyFormat(
4421      "NSDictionary *d = @{ @\"nam\" : NSUserNam(), @\"dte\" : [NSDate date],\n"
4422      "                     @\"processInfo\" : [NSProcessInfo processInfo] };");
4423  verifyFormat(
4424      "@{ NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee :\n"
4425      "   regularFont, };");
4426
4427}
4428
4429TEST_F(FormatTest, ReformatRegionAdjustsIndent) {
4430  EXPECT_EQ("{\n"
4431            "{\n"
4432            "a;\n"
4433            "b;\n"
4434            "}\n"
4435            "}",
4436            format("{\n"
4437                   "{\n"
4438                   "a;\n"
4439                   "     b;\n"
4440                   "}\n"
4441                   "}",
4442                   13, 2, getLLVMStyle()));
4443  EXPECT_EQ("{\n"
4444            "{\n"
4445            "  a;\n"
4446            "b;\n"
4447            "}\n"
4448            "}",
4449            format("{\n"
4450                   "{\n"
4451                   "     a;\n"
4452                   "b;\n"
4453                   "}\n"
4454                   "}",
4455                   9, 2, getLLVMStyle()));
4456  EXPECT_EQ("{\n"
4457            "{\n"
4458            "public:\n"
4459            "  b;\n"
4460            "}\n"
4461            "}",
4462            format("{\n"
4463                   "{\n"
4464                   "public:\n"
4465                   "     b;\n"
4466                   "}\n"
4467                   "}",
4468                   17, 2, getLLVMStyle()));
4469  EXPECT_EQ("{\n"
4470            "{\n"
4471            "a;\n"
4472            "}\n"
4473            "{\n"
4474            "  b; //\n"
4475            "}\n"
4476            "}",
4477            format("{\n"
4478                   "{\n"
4479                   "a;\n"
4480                   "}\n"
4481                   "{\n"
4482                   "           b; //\n"
4483                   "}\n"
4484                   "}",
4485                   22, 2, getLLVMStyle()));
4486  EXPECT_EQ("  {\n"
4487            "    a; //\n"
4488            "  }",
4489            format("  {\n"
4490                   "a; //\n"
4491                   "  }",
4492                   4, 2, getLLVMStyle()));
4493  EXPECT_EQ("void f() {}\n"
4494            "void g() {}",
4495            format("void f() {}\n"
4496                   "void g() {}",
4497                   13, 0, getLLVMStyle()));
4498  EXPECT_EQ("int a; // comment\n"
4499            "       // line 2\n"
4500            "int b;",
4501            format("int a; // comment\n"
4502                   "       // line 2\n"
4503                   "  int b;",
4504                   35, 0, getLLVMStyle()));
4505}
4506
4507TEST_F(FormatTest, BreakStringLiterals) {
4508  EXPECT_EQ("\"some text \"\n"
4509            "\"other\";",
4510            format("\"some text other\";", getLLVMStyleWithColumns(12)));
4511  EXPECT_EQ("\"some text \"\n"
4512            "\"other\";",
4513            format("\\\n\"some text other\";", getLLVMStyleWithColumns(12)));
4514  EXPECT_EQ(
4515      "#define A  \\\n"
4516      "  \"some \"  \\\n"
4517      "  \"text \"  \\\n"
4518      "  \"other\";",
4519      format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
4520  EXPECT_EQ(
4521      "#define A  \\\n"
4522      "  \"so \"    \\\n"
4523      "  \"text \"  \\\n"
4524      "  \"other\";",
4525      format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
4526
4527  EXPECT_EQ("\"some text\"",
4528            format("\"some text\"", getLLVMStyleWithColumns(1)));
4529  EXPECT_EQ("\"some text\"",
4530            format("\"some text\"", getLLVMStyleWithColumns(11)));
4531  EXPECT_EQ("\"some \"\n"
4532            "\"text\"",
4533            format("\"some text\"", getLLVMStyleWithColumns(10)));
4534  EXPECT_EQ("\"some \"\n"
4535            "\"text\"",
4536            format("\"some text\"", getLLVMStyleWithColumns(7)));
4537  EXPECT_EQ("\"some\"\n"
4538            "\" tex\"\n"
4539            "\"t\"",
4540            format("\"some text\"", getLLVMStyleWithColumns(6)));
4541  EXPECT_EQ("\"some\"\n"
4542            "\" tex\"\n"
4543            "\" and\"",
4544            format("\"some tex and\"", getLLVMStyleWithColumns(6)));
4545  EXPECT_EQ("\"some\"\n"
4546            "\"/tex\"\n"
4547            "\"/and\"",
4548            format("\"some/tex/and\"", getLLVMStyleWithColumns(6)));
4549
4550  EXPECT_EQ("variable =\n"
4551            "    \"long string \"\n"
4552            "    \"literal\";",
4553            format("variable = \"long string literal\";",
4554                   getLLVMStyleWithColumns(20)));
4555
4556  EXPECT_EQ("variable = f(\n"
4557            "    \"long string \"\n"
4558            "    \"literal\",\n"
4559            "    short,\n"
4560            "    loooooooooooooooooooong);",
4561            format("variable = f(\"long string literal\", short, "
4562                   "loooooooooooooooooooong);",
4563                   getLLVMStyleWithColumns(20)));
4564  EXPECT_EQ(
4565      "f(\"one two\".split(\n"
4566      "    variable));",
4567      format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
4568  EXPECT_EQ("f(\"one two three four five six \"\n"
4569            "  \"seven\".split(\n"
4570            "      really_looooong_variable));",
4571            format("f(\"one two three four five six seven\"."
4572                   "split(really_looooong_variable));",
4573                   getLLVMStyleWithColumns(33)));
4574
4575  EXPECT_EQ("f(\"some \"\n"
4576            "  \"text\",\n"
4577            "  other);",
4578            format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
4579
4580  // Only break as a last resort.
4581  verifyFormat(
4582      "aaaaaaaaaaaaaaaaaaaa(\n"
4583      "    aaaaaaaaaaaaaaaaaaaa,\n"
4584      "    aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
4585
4586  EXPECT_EQ(
4587      "\"splitmea\"\n"
4588      "\"trandomp\"\n"
4589      "\"oint\"",
4590      format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10)));
4591
4592  EXPECT_EQ(
4593      "\"split/\"\n"
4594      "\"pathat/\"\n"
4595      "\"slashes\"",
4596      format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
4597
4598  FormatStyle AlignLeft = getLLVMStyleWithColumns(12);
4599  AlignLeft.AlignEscapedNewlinesLeft = true;
4600  EXPECT_EQ(
4601      "#define A \\\n"
4602      "  \"some \" \\\n"
4603      "  \"text \" \\\n"
4604      "  \"other\";",
4605      format("#define A \"some text other\";", AlignLeft));
4606}
4607
4608TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) {
4609  EXPECT_EQ("someFunction(\"aaabbbcccd\"\n"
4610            "             \"ddeeefff\");",
4611            format("someFunction(\"aaabbbcccdddeeefff\");",
4612                   getLLVMStyleWithColumns(25)));
4613  EXPECT_EQ("someFunction1234567890(\n"
4614            "    \"aaabbbcccdddeeefff\");",
4615            format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
4616                   getLLVMStyleWithColumns(26)));
4617  EXPECT_EQ("someFunction1234567890(\n"
4618            "    \"aaabbbcccdddeeeff\"\n"
4619            "    \"f\");",
4620            format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
4621                   getLLVMStyleWithColumns(25)));
4622  EXPECT_EQ("someFunction1234567890(\n"
4623            "    \"aaabbbcccdddeeeff\"\n"
4624            "    \"f\");",
4625            format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
4626                   getLLVMStyleWithColumns(24)));
4627  EXPECT_EQ("someFunction(\n"
4628            "    \"aaabbbcc \"\n"
4629            "    \"dddeeefff\");",
4630            format("someFunction(\"aaabbbcc dddeeefff\");",
4631                   getLLVMStyleWithColumns(25)));
4632  EXPECT_EQ("someFunction(\"aaabbbccc \"\n"
4633            "             \"ddeeefff\");",
4634            format("someFunction(\"aaabbbccc ddeeefff\");",
4635                   getLLVMStyleWithColumns(25)));
4636  EXPECT_EQ("someFunction1234567890(\n"
4637            "    \"aaabb \"\n"
4638            "    \"cccdddeeefff\");",
4639            format("someFunction1234567890(\"aaabb cccdddeeefff\");",
4640                   getLLVMStyleWithColumns(25)));
4641  EXPECT_EQ("#define A          \\\n"
4642            "  string s =       \\\n"
4643            "      \"123456789\"  \\\n"
4644            "      \"0\";         \\\n"
4645            "  int i;",
4646            format("#define A string s = \"1234567890\"; int i;",
4647                   getLLVMStyleWithColumns(20)));
4648}
4649
4650TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) {
4651  EXPECT_EQ("\"\\a\"",
4652            format("\"\\a\"", getLLVMStyleWithColumns(3)));
4653  EXPECT_EQ("\"\\\"",
4654            format("\"\\\"", getLLVMStyleWithColumns(2)));
4655  EXPECT_EQ("\"test\"\n"
4656            "\"\\n\"",
4657            format("\"test\\n\"", getLLVMStyleWithColumns(7)));
4658  EXPECT_EQ("\"tes\\\\\"\n"
4659            "\"n\"",
4660            format("\"tes\\\\n\"", getLLVMStyleWithColumns(7)));
4661  EXPECT_EQ("\"\\\\\\\\\"\n"
4662            "\"\\n\"",
4663            format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7)));
4664  EXPECT_EQ("\"\\uff01\"",
4665            format("\"\\uff01\"", getLLVMStyleWithColumns(7)));
4666  EXPECT_EQ("\"\\uff01\"\n"
4667            "\"test\"",
4668            format("\"\\uff01test\"", getLLVMStyleWithColumns(8)));
4669  EXPECT_EQ("\"\\Uff01ff02\"",
4670            format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11)));
4671  EXPECT_EQ("\"\\x000000000001\"\n"
4672            "\"next\"",
4673            format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16)));
4674  EXPECT_EQ("\"\\x000000000001next\"",
4675            format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15)));
4676  EXPECT_EQ("\"\\x000000000001\"",
4677            format("\"\\x000000000001\"", getLLVMStyleWithColumns(7)));
4678  EXPECT_EQ("\"test\"\n"
4679            "\"\\000000\"\n"
4680            "\"000001\"",
4681            format("\"test\\000000000001\"", getLLVMStyleWithColumns(9)));
4682  EXPECT_EQ("\"test\\000\"\n"
4683            "\"00000000\"\n"
4684            "\"1\"",
4685            format("\"test\\000000000001\"", getLLVMStyleWithColumns(10)));
4686  EXPECT_EQ("R\"(\\x\\x00)\"\n",
4687            format("R\"(\\x\\x00)\"\n", getLLVMStyleWithColumns(7)));
4688}
4689
4690TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) {
4691  verifyFormat("void f() {\n"
4692               "  return g() {}\n"
4693               "  void h() {}");
4694  verifyFormat("if (foo)\n"
4695               "  return { forgot_closing_brace();\n"
4696               "test();");
4697  verifyFormat("int a[] = { void forgot_closing_brace() { f();\n"
4698               "g();\n"
4699               "}");
4700}
4701
4702TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) {
4703  verifyFormat("class X {\n"
4704               "  void f() {\n"
4705               "  }\n"
4706               "};",
4707               getLLVMStyleWithColumns(12));
4708}
4709
4710TEST_F(FormatTest, ConfigurableIndentWidth) {
4711  FormatStyle EightIndent = getLLVMStyleWithColumns(18);
4712  EightIndent.IndentWidth = 8;
4713  verifyFormat("void f() {\n"
4714               "        someFunction();\n"
4715               "        if (true) {\n"
4716               "                f();\n"
4717               "        }\n"
4718               "}",
4719               EightIndent);
4720  verifyFormat("class X {\n"
4721               "        void f() {\n"
4722               "        }\n"
4723               "};",
4724               EightIndent);
4725  verifyFormat("int x[] = {\n"
4726               "        call(),\n"
4727               "        call(),\n"
4728               "};",
4729               EightIndent);
4730}
4731
4732TEST_F(FormatTest, ConfigurableUseOfTab) {
4733  FormatStyle Tab = getLLVMStyleWithColumns(42);
4734  Tab.IndentWidth = 8;
4735  Tab.UseTab = true;
4736  Tab.AlignEscapedNewlinesLeft = true;
4737  verifyFormat("class X {\n"
4738               "\tvoid f() {\n"
4739               "\t\tsomeFunction(parameter1,\n"
4740               "\t\t\t     parameter2);\n"
4741               "\t}\n"
4742               "};",
4743               Tab);
4744  verifyFormat("#define A                        \\\n"
4745               "\tvoid f() {               \\\n"
4746               "\t\tsomeFunction(    \\\n"
4747               "\t\t    parameter1,  \\\n"
4748               "\t\t    parameter2); \\\n"
4749               "\t}",
4750               Tab);
4751
4752
4753  // FIXME: To correctly count mixed whitespace we need to
4754  // also correctly count mixed whitespace in front of the comment.
4755  //
4756  // EXPECT_EQ("/*\n"
4757  //           "\t      a\t\tcomment\n"
4758  //           "\t      in multiple lines\n"
4759  //           "       */",
4760  //           format("   /*\t \t \n"
4761  //                  " \t \t a\t\tcomment\t \t\n"
4762  //                  " \t \t in multiple lines\t\n"
4763  //                  " \t  */",
4764  //                  Tab));
4765  // Tab.UseTab = false;
4766  // EXPECT_EQ("/*\n"
4767  //           "              a\t\tcomment\n"
4768  //           "              in multiple lines\n"
4769  //           "       */",
4770  //           format("   /*\t \t \n"
4771  //                  " \t \t a\t\tcomment\t \t\n"
4772  //                  " \t \t in multiple lines\t\n"
4773  //                  " \t  */",
4774  //                  Tab));
4775  // EXPECT_EQ("/* some\n"
4776  //           "   comment */",
4777  //          format(" \t \t /* some\n"
4778  //                 " \t \t    comment */",
4779  //                 Tab));
4780
4781  EXPECT_EQ("{\n"
4782            "  /*\n"
4783            "   * Comment\n"
4784            "   */\n"
4785            "  int i;\n"
4786            "}",
4787            format("{\n"
4788                   "\t/*\n"
4789                   "\t * Comment\n"
4790                   "\t */\n"
4791                   "\t int i;\n"
4792                   "}"));
4793}
4794
4795TEST_F(FormatTest, LinuxBraceBreaking) {
4796  FormatStyle BreakBeforeBrace = getLLVMStyle();
4797  BreakBeforeBrace.BreakBeforeBraces = FormatStyle::BS_Linux;
4798  verifyFormat("namespace a\n"
4799               "{\n"
4800               "class A\n"
4801               "{\n"
4802               "  void f()\n"
4803               "  {\n"
4804               "    if (true) {\n"
4805               "      a();\n"
4806               "      b();\n"
4807               "    }\n"
4808               "  }\n"
4809               "  void g()\n"
4810               "  {\n"
4811               "    return;\n"
4812               "  }\n"
4813               "}\n"
4814               "}",
4815               BreakBeforeBrace);
4816}
4817
4818TEST_F(FormatTest, StroustrupBraceBreaking) {
4819  FormatStyle BreakBeforeBrace = getLLVMStyle();
4820  BreakBeforeBrace.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
4821  verifyFormat("namespace a {\n"
4822               "class A {\n"
4823               "  void f()\n"
4824               "  {\n"
4825               "    if (true) {\n"
4826               "      a();\n"
4827               "      b();\n"
4828               "    }\n"
4829               "  }\n"
4830               "  void g()\n"
4831               "  {\n"
4832               "    return;\n"
4833               "  }\n"
4834               "}\n"
4835               "}",
4836               BreakBeforeBrace);
4837}
4838
4839bool allStylesEqual(ArrayRef<FormatStyle> Styles) {
4840  for (size_t i = 1; i < Styles.size(); ++i)
4841    if (!(Styles[0] == Styles[i]))
4842      return false;
4843  return true;
4844}
4845
4846TEST_F(FormatTest, GetsPredefinedStyleByName) {
4847  FormatStyle Styles[3];
4848
4849  Styles[0] = getLLVMStyle();
4850  EXPECT_TRUE(getPredefinedStyle("LLVM", &Styles[1]));
4851  EXPECT_TRUE(getPredefinedStyle("lLvM", &Styles[2]));
4852  EXPECT_TRUE(allStylesEqual(Styles));
4853
4854  Styles[0] = getGoogleStyle();
4855  EXPECT_TRUE(getPredefinedStyle("Google", &Styles[1]));
4856  EXPECT_TRUE(getPredefinedStyle("gOOgle", &Styles[2]));
4857  EXPECT_TRUE(allStylesEqual(Styles));
4858
4859  Styles[0] = getChromiumStyle();
4860  EXPECT_TRUE(getPredefinedStyle("Chromium", &Styles[1]));
4861  EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", &Styles[2]));
4862  EXPECT_TRUE(allStylesEqual(Styles));
4863
4864  Styles[0] = getMozillaStyle();
4865  EXPECT_TRUE(getPredefinedStyle("Mozilla", &Styles[1]));
4866  EXPECT_TRUE(getPredefinedStyle("moZILla", &Styles[2]));
4867  EXPECT_TRUE(allStylesEqual(Styles));
4868
4869  EXPECT_FALSE(getPredefinedStyle("qwerty", &Styles[0]));
4870}
4871
4872TEST_F(FormatTest, ParsesConfiguration) {
4873  FormatStyle Style = {};
4874#define CHECK_PARSE(TEXT, FIELD, VALUE)                                        \
4875  EXPECT_NE(VALUE, Style.FIELD);                                               \
4876  EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value());                      \
4877  EXPECT_EQ(VALUE, Style.FIELD)
4878
4879#define CHECK_PARSE_BOOL(FIELD)                                                \
4880  Style.FIELD = false;                                                         \
4881  EXPECT_EQ(0, parseConfiguration(#FIELD ": true", &Style).value());           \
4882  EXPECT_TRUE(Style.FIELD);                                                    \
4883  EXPECT_EQ(0, parseConfiguration(#FIELD ": false", &Style).value());          \
4884  EXPECT_FALSE(Style.FIELD);
4885
4886  CHECK_PARSE_BOOL(AlignEscapedNewlinesLeft);
4887  CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
4888  CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine);
4889  CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
4890  CHECK_PARSE_BOOL(AlwaysBreakTemplateDeclarations);
4891  CHECK_PARSE_BOOL(BinPackParameters);
4892  CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine);
4893  CHECK_PARSE_BOOL(DerivePointerBinding);
4894  CHECK_PARSE_BOOL(IndentCaseLabels);
4895  CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
4896  CHECK_PARSE_BOOL(PointerBindsToType);
4897  CHECK_PARSE_BOOL(SpacesInBracedLists);
4898  CHECK_PARSE_BOOL(UseTab);
4899
4900  CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234);
4901  CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u);
4902  CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u);
4903  CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u);
4904  CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234",
4905              PenaltyReturnTypeOnItsOwnLine, 1234u);
4906  CHECK_PARSE("SpacesBeforeTrailingComments: 1234",
4907              SpacesBeforeTrailingComments, 1234u);
4908  CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u);
4909
4910  Style.Standard = FormatStyle::LS_Auto;
4911  CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03);
4912  CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11);
4913  CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto);
4914
4915  Style.ColumnLimit = 123;
4916  FormatStyle BaseStyle = getLLVMStyle();
4917  CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
4918  CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u);
4919
4920  Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
4921  CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces,
4922              FormatStyle::BS_Attach);
4923  CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces,
4924              FormatStyle::BS_Linux);
4925  CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces,
4926              FormatStyle::BS_Stroustrup);
4927
4928#undef CHECK_PARSE
4929#undef CHECK_PARSE_BOOL
4930}
4931
4932TEST_F(FormatTest, ConfigurationRoundTripTest) {
4933  FormatStyle Style = getLLVMStyle();
4934  std::string YAML = configurationAsText(Style);
4935  FormatStyle ParsedStyle = {};
4936  EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value());
4937  EXPECT_EQ(Style, ParsedStyle);
4938}
4939
4940TEST_F(FormatTest, WorksFor8bitEncodings) {
4941  EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n"
4942            "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n"
4943            "\"\xe7\xe8\xec\xed\xfe\xfe \"\n"
4944            "\"\xef\xee\xf0\xf3...\"",
4945            format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 "
4946                   "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe "
4947                   "\xef\xee\xf0\xf3...\"",
4948                   getLLVMStyleWithColumns(12)));
4949}
4950
4951// FIXME: Encode Cyrillic and CJK characters below to appease MS compilers.
4952#if !defined(_MSC_VER)
4953
4954TEST_F(FormatTest, CountsUTF8CharactersProperly) {
4955  verifyFormat("\"Однажды в студёную зимнюю пору...\"",
4956               getLLVMStyleWithColumns(35));
4957  verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"",
4958               getLLVMStyleWithColumns(21));
4959  verifyFormat("// Однажды в студёную зимнюю пору...",
4960               getLLVMStyleWithColumns(36));
4961  verifyFormat("// 一 二 三 四 五 六 七 八 九 十",
4962               getLLVMStyleWithColumns(22));
4963  verifyFormat("/* Однажды в студёную зимнюю пору... */",
4964               getLLVMStyleWithColumns(39));
4965  verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */",
4966               getLLVMStyleWithColumns(25));
4967}
4968
4969TEST_F(FormatTest, SplitsUTF8Strings) {
4970  EXPECT_EQ(
4971      "\"Однажды, в \"\n"
4972      "\"студёную \"\n"
4973      "\"зимнюю \"\n"
4974      "\"пору,\"",
4975      format("\"Однажды, в студёную зимнюю пору,\"",
4976             getLLVMStyleWithColumns(13)));
4977  EXPECT_EQ("\"一 二 三 四 \"\n"
4978            "\"五 六 七 八 \"\n"
4979            "\"九 十\"",
4980            format("\"一 二 三 四 五 六 七 八 九 十\"",
4981                   getLLVMStyleWithColumns(10)));
4982}
4983
4984TEST_F(FormatTest, SplitsUTF8LineComments) {
4985  EXPECT_EQ("// Я из лесу\n"
4986            "// вышел; был\n"
4987            "// сильный\n"
4988            "// мороз.",
4989            format("// Я из лесу вышел; был сильный мороз.",
4990                   getLLVMStyleWithColumns(13)));
4991  EXPECT_EQ("// 一二三\n"
4992            "// 四五六七\n"
4993            "// 八\n"
4994            "// 九 十",
4995            format("// 一二三 四五六七 八  九 十", getLLVMStyleWithColumns(6)));
4996}
4997
4998TEST_F(FormatTest, SplitsUTF8BlockComments) {
4999  EXPECT_EQ("/* Гляжу,\n"
5000            " * поднимается\n"
5001            " * медленно в\n"
5002            " * гору\n"
5003            " * Лошадка,\n"
5004            " * везущая\n"
5005            " * хворосту\n"
5006            " * воз. */",
5007            format("/* Гляжу, поднимается медленно в гору\n"
5008                   " * Лошадка, везущая хворосту воз. */",
5009                   getLLVMStyleWithColumns(13)));
5010  EXPECT_EQ("/* 一二三\n"
5011            " * 四五六七\n"
5012            " * 八\n"
5013            " * 九 十\n"
5014            " */",
5015            format("/* 一二三 四五六七 八  九 十 */", getLLVMStyleWithColumns(6)));
5016  EXPECT_EQ("/* �������� ��������\n"
5017            " * ��������\n"
5018            " * ������-�� */",
5019            format("/* �������� �������� �������� ������-�� */", getLLVMStyleWithColumns(12)));
5020}
5021
5022#endif
5023
5024} // end namespace tooling
5025} // end namespace clang
5026