FormatTest.cpp revision 54b4e4468ec2bcd381ede70e1391bcdb59b8fd1a 
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, ReformatsMovedLines) {
196  EXPECT_EQ(
197      "template <typename T> T *getFETokenInfo() const {\n"
198      "  return static_cast<T *>(FETokenInfo);\n"
199      "}\n"
200      "  int a; // <- Should not be formatted",
201      format(
202          "template<typename T>\n"
203          "T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }\n"
204          "  int a; // <- Should not be formatted",
205          9, 5, getLLVMStyle()));
206}
207
208//===----------------------------------------------------------------------===//
209// Tests for control statements.
210//===----------------------------------------------------------------------===//
211
212TEST_F(FormatTest, FormatIfWithoutCompoundStatement) {
213  verifyFormat("if (true)\n  f();\ng();");
214  verifyFormat("if (a)\n  if (b)\n    if (c)\n      g();\nh();");
215  verifyFormat("if (a)\n  if (b) {\n    f();\n  }\ng();");
216
217  FormatStyle AllowsMergedIf = getLLVMStyle();
218  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
219  verifyFormat("if (a)\n"
220               "  // comment\n"
221               "  f();",
222               AllowsMergedIf);
223  verifyFormat("if (a)\n"
224               "  ;",
225               AllowsMergedIf);
226  verifyFormat("if (a)\n"
227               "  if (b) return;",
228               AllowsMergedIf);
229
230  verifyFormat("if (a) // Can't merge this\n"
231               "  f();\n",
232               AllowsMergedIf);
233  verifyFormat("if (a) /* still don't merge */\n"
234               "  f();",
235               AllowsMergedIf);
236  verifyFormat("if (a) { // Never merge this\n"
237               "  f();\n"
238               "}",
239               AllowsMergedIf);
240  verifyFormat("if (a) { /* Never merge this */\n"
241               "  f();\n"
242               "}",
243               AllowsMergedIf);
244
245  EXPECT_EQ("if (a) return;", format("if(a)\nreturn;", 7, 1, AllowsMergedIf));
246  EXPECT_EQ("if (a) return; // comment",
247            format("if(a)\nreturn; // comment", 20, 1, AllowsMergedIf));
248
249  AllowsMergedIf.ColumnLimit = 14;
250  verifyFormat("if (a) return;", AllowsMergedIf);
251  verifyFormat("if (aaaaaaaaa)\n"
252               "  return;",
253               AllowsMergedIf);
254
255  AllowsMergedIf.ColumnLimit = 13;
256  verifyFormat("if (a)\n  return;", AllowsMergedIf);
257}
258
259TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) {
260  FormatStyle AllowsMergedLoops = getLLVMStyle();
261  AllowsMergedLoops.AllowShortLoopsOnASingleLine = true;
262  verifyFormat("while (true) continue;", AllowsMergedLoops);
263  verifyFormat("for (;;) continue;", AllowsMergedLoops);
264  verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops);
265  verifyFormat("while (true)\n"
266               "  ;",
267               AllowsMergedLoops);
268  verifyFormat("for (;;)\n"
269               "  ;",
270               AllowsMergedLoops);
271  verifyFormat("for (;;)\n"
272               "  for (;;) continue;",
273               AllowsMergedLoops);
274  verifyFormat("for (;;) // Can't merge this\n"
275               "  continue;",
276               AllowsMergedLoops);
277  verifyFormat("for (;;) /* still don't merge */\n"
278               "  continue;",
279               AllowsMergedLoops);
280}
281
282TEST_F(FormatTest, ParseIfElse) {
283  verifyFormat("if (true)\n"
284               "  if (true)\n"
285               "    if (true)\n"
286               "      f();\n"
287               "    else\n"
288               "      g();\n"
289               "  else\n"
290               "    h();\n"
291               "else\n"
292               "  i();");
293  verifyFormat("if (true)\n"
294               "  if (true)\n"
295               "    if (true) {\n"
296               "      if (true)\n"
297               "        f();\n"
298               "    } else {\n"
299               "      g();\n"
300               "    }\n"
301               "  else\n"
302               "    h();\n"
303               "else {\n"
304               "  i();\n"
305               "}");
306}
307
308TEST_F(FormatTest, ElseIf) {
309  verifyFormat("if (a) {\n} else if (b) {\n}");
310  verifyFormat("if (a)\n"
311               "  f();\n"
312               "else if (b)\n"
313               "  g();\n"
314               "else\n"
315               "  h();");
316}
317
318TEST_F(FormatTest, FormatsForLoop) {
319  verifyFormat(
320      "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n"
321      "     ++VeryVeryLongLoopVariable)\n"
322      "  ;");
323  verifyFormat("for (;;)\n"
324               "  f();");
325  verifyFormat("for (;;) {\n}");
326  verifyFormat("for (;;) {\n"
327               "  f();\n"
328               "}");
329  verifyFormat("for (int i = 0; (i < 10); ++i) {\n}");
330
331  verifyFormat(
332      "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
333      "                                          E = UnwrappedLines.end();\n"
334      "     I != E; ++I) {\n}");
335
336  verifyFormat(
337      "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n"
338      "     ++IIIII) {\n}");
339  verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n"
340               "         aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n"
341               "     aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}");
342  verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n"
343               "         I = FD->getDeclsInPrototypeScope().begin(),\n"
344               "         E = FD->getDeclsInPrototypeScope().end();\n"
345               "     I != E; ++I) {\n}");
346
347  // FIXME: Not sure whether we want extra identation in line 3 here:
348  verifyFormat(
349      "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
350      "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n"
351      "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
352      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
353      "     ++aaaaaaaaaaa) {\n}");
354  verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n"
355               "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
356               "}");
357  verifyFormat("for (some_namespace::SomeIterator iter( // force break\n"
358               "         aaaaaaaaaa);\n"
359               "     iter; ++iter) {\n"
360               "}");
361
362  FormatStyle NoBinPacking = getLLVMStyle();
363  NoBinPacking.BinPackParameters = false;
364  verifyFormat("for (int aaaaaaaaaaa = 1;\n"
365               "     aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n"
366               "                                           aaaaaaaaaaaaaaaa,\n"
367               "                                           aaaaaaaaaaaaaaaa,\n"
368               "                                           aaaaaaaaaaaaaaaa);\n"
369               "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
370               "}",
371               NoBinPacking);
372  verifyFormat(
373      "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
374      "                                          E = UnwrappedLines.end();\n"
375      "     I != E;\n"
376      "     ++I) {\n}",
377      NoBinPacking);
378}
379
380TEST_F(FormatTest, RangeBasedForLoops) {
381  verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
382               "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
383  verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n"
384               "     aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}");
385  verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n"
386               "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
387}
388
389TEST_F(FormatTest, FormatsWhileLoop) {
390  verifyFormat("while (true) {\n}");
391  verifyFormat("while (true)\n"
392               "  f();");
393  verifyFormat("while () {\n}");
394  verifyFormat("while () {\n"
395               "  f();\n"
396               "}");
397}
398
399TEST_F(FormatTest, FormatsDoWhile) {
400  verifyFormat("do {\n"
401               "  do_something();\n"
402               "} while (something());");
403  verifyFormat("do\n"
404               "  do_something();\n"
405               "while (something());");
406}
407
408TEST_F(FormatTest, FormatsSwitchStatement) {
409  verifyFormat("switch (x) {\n"
410               "case 1:\n"
411               "  f();\n"
412               "  break;\n"
413               "case kFoo:\n"
414               "case ns::kBar:\n"
415               "case kBaz:\n"
416               "  break;\n"
417               "default:\n"
418               "  g();\n"
419               "  break;\n"
420               "}");
421  verifyFormat("switch (x) {\n"
422               "case 1: {\n"
423               "  f();\n"
424               "  break;\n"
425               "}\n"
426               "}");
427  verifyFormat("switch (x) {\n"
428               "case 1: {\n"
429               "  f();\n"
430               "  {\n"
431               "    g();\n"
432               "    h();\n"
433               "  }\n"
434               "  break;\n"
435               "}\n"
436               "}");
437  verifyFormat("switch (x) {\n"
438               "case 1: {\n"
439               "  f();\n"
440               "  if (foo) {\n"
441               "    g();\n"
442               "    h();\n"
443               "  }\n"
444               "  break;\n"
445               "}\n"
446               "}");
447  verifyFormat("switch (x) {\n"
448               "case 1: {\n"
449               "  f();\n"
450               "  g();\n"
451               "} break;\n"
452               "}");
453  verifyFormat("switch (test)\n"
454               "  ;");
455  verifyFormat("switch (x) {\n"
456               "default: {\n"
457               "  // Do nothing.\n"
458               "}\n"
459               "}");
460  verifyFormat("switch (x) {\n"
461               "// comment\n"
462               "// if 1, do f()\n"
463               "case 1:\n"
464               "  f();\n"
465               "}");
466  verifyFormat("switch (x) {\n"
467               "case 1:\n"
468               "  // Do amazing stuff\n"
469               "  {\n"
470               "    f();\n"
471               "    g();\n"
472               "  }\n"
473               "  break;\n"
474               "}");
475  verifyFormat("#define A          \\\n"
476               "  switch (x) {     \\\n"
477               "  case a:          \\\n"
478               "    foo = b;       \\\n"
479               "  }", getLLVMStyleWithColumns(20));
480
481  verifyGoogleFormat("switch (x) {\n"
482                     "  case 1:\n"
483                     "    f();\n"
484                     "    break;\n"
485                     "  case kFoo:\n"
486                     "  case ns::kBar:\n"
487                     "  case kBaz:\n"
488                     "    break;\n"
489                     "  default:\n"
490                     "    g();\n"
491                     "    break;\n"
492                     "}");
493  verifyGoogleFormat("switch (x) {\n"
494                     "  case 1: {\n"
495                     "    f();\n"
496                     "    break;\n"
497                     "  }\n"
498                     "}");
499  verifyGoogleFormat("switch (test)\n"
500                     "    ;");
501}
502
503TEST_F(FormatTest, FormatsLabels) {
504  verifyFormat("void f() {\n"
505               "  some_code();\n"
506               "test_label:\n"
507               "  some_other_code();\n"
508               "  {\n"
509               "    some_more_code();\n"
510               "  another_label:\n"
511               "    some_more_code();\n"
512               "  }\n"
513               "}");
514  verifyFormat("some_code();\n"
515               "test_label:\n"
516               "some_other_code();");
517}
518
519//===----------------------------------------------------------------------===//
520// Tests for comments.
521//===----------------------------------------------------------------------===//
522
523TEST_F(FormatTest, UnderstandsSingleLineComments) {
524  verifyFormat("//* */");
525  verifyFormat("// line 1\n"
526               "// line 2\n"
527               "void f() {}\n");
528
529  verifyFormat("void f() {\n"
530               "  // Doesn't do anything\n"
531               "}");
532  verifyFormat("void f(int i,  // some comment (probably for i)\n"
533               "       int j,  // some comment (probably for j)\n"
534               "       int k); // some comment (probably for k)");
535  verifyFormat("void f(int i,\n"
536               "       // some comment (probably for j)\n"
537               "       int j,\n"
538               "       // some comment (probably for k)\n"
539               "       int k);");
540
541  verifyFormat("int i    // This is a fancy variable\n"
542               "    = 5; // with nicely aligned comment.");
543
544  verifyFormat("// Leading comment.\n"
545               "int a; // Trailing comment.");
546  verifyFormat("int a; // Trailing comment\n"
547               "       // on 2\n"
548               "       // or 3 lines.\n"
549               "int b;");
550  verifyFormat("int a; // Trailing comment\n"
551               "\n"
552               "// Leading comment.\n"
553               "int b;");
554  verifyFormat("int a;    // Comment.\n"
555               "          // More details.\n"
556               "int bbbb; // Another comment.");
557  verifyFormat(
558      "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
559      "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;   // comment\n"
560      "int cccccccccccccccccccccccccccccc;       // comment\n"
561      "int ddd;                     // looooooooooooooooooooooooong comment\n"
562      "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
563      "int bbbbbbbbbbbbbbbbbbbbb;   // comment\n"
564      "int ccccccccccccccccccc;     // comment");
565
566  verifyFormat("#include \"a\"     // comment\n"
567               "#include \"a/b/c\" // comment");
568  verifyFormat("#include <a>     // comment\n"
569               "#include <a/b/c> // comment");
570
571  verifyFormat("enum E {\n"
572               "  // comment\n"
573               "  VAL_A, // comment\n"
574               "  VAL_B\n"
575               "};");
576
577  verifyFormat(
578      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
579      "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment");
580  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
581               "    // Comment inside a statement.\n"
582               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
583  verifyFormat(
584      "bool aaaaaaaaaaaaa = // comment\n"
585      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
586      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
587
588  verifyFormat("int aaaa; // aaaaa\n"
589               "int aa;   // aaaaaaa",
590               getLLVMStyleWithColumns(20));
591
592  EXPECT_EQ("void f() { // This does something ..\n"
593            "}\n"
594            "int a; // This is unrelated",
595            format("void f()    {     // This does something ..\n"
596                   "  }\n"
597                   "int   a;     // This is unrelated"));
598  EXPECT_EQ("void f() { // This does something ..\n"
599            "}          // awesome..\n"
600            "\n"
601            "int a; // This is unrelated",
602            format("void f()    { // This does something ..\n"
603                   "      } // awesome..\n"
604                   " \n"
605                   "int a;    // This is unrelated"));
606
607  EXPECT_EQ("int i; // single line trailing comment",
608            format("int i;\\\n// single line trailing comment"));
609
610  verifyGoogleFormat("int a;  // Trailing comment.");
611
612  verifyFormat("someFunction(anotherFunction( // Force break.\n"
613               "    parameter));");
614
615  verifyGoogleFormat("#endif  // HEADER_GUARD");
616
617  verifyFormat("const char *test[] = {\n"
618               "  // A\n"
619               "  \"aaaa\",\n"
620               "  // B\n"
621               "  \"aaaaa\",\n"
622               "};");
623  verifyGoogleFormat(
624      "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
625      "    aaaaaaaaaaaaaaaaaaaaaa);  // 81 cols with this comment");
626  EXPECT_EQ("D(a, {\n"
627            "  // test\n"
628            "  int a;\n"
629            "});",
630            format("D(a, {\n"
631                   "// test\n"
632                   "int a;\n"
633                   "});"));
634}
635
636TEST_F(FormatTest, CanFormatCommentsLocally) {
637  EXPECT_EQ("int a;    // comment\n"
638            "int    b; // comment",
639            format("int   a; // comment\n"
640                   "int    b; // comment",
641                   0, 0, getLLVMStyle()));
642  EXPECT_EQ("int   a; // comment\n"
643            "         // line 2\n"
644            "int b;",
645            format("int   a; // comment\n"
646                   "            // line 2\n"
647                   "int b;",
648                   28, 0, getLLVMStyle()));
649  EXPECT_EQ("int aaaaaa; // comment\n"
650            "int b;\n"
651            "int c; // unrelated comment",
652            format("int aaaaaa; // comment\n"
653                   "int b;\n"
654                   "int   c; // unrelated comment",
655                   31, 0, getLLVMStyle()));
656}
657
658TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) {
659  EXPECT_EQ("// comment", format("// comment  "));
660  EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment",
661            format("int aaaaaaa, bbbbbbb; // comment                   ",
662                   getLLVMStyleWithColumns(33)));
663}
664
665TEST_F(FormatTest, UnderstandsMultiLineComments) {
666  verifyFormat("f(/*test=*/ true);");
667  EXPECT_EQ(
668      "f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n"
669      "  bbbbbbbbbbbbbbbbbbbbbbbbb);",
670      format("f(aaaaaaaaaaaaaaaaaaaaaaaaa ,   \\\n/* Trailing comment for aa... */\n"
671             "  bbbbbbbbbbbbbbbbbbbbbbbbb);"));
672  EXPECT_EQ(
673      "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
674      "  /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);",
675      format("f(aaaaaaaaaaaaaaaaaaaaaaaaa    ,   \n"
676             "/* Leading comment for bb... */   bbbbbbbbbbbbbbbbbbbbbbbbb);"));
677
678  FormatStyle NoBinPacking = getLLVMStyle();
679  NoBinPacking.BinPackParameters = false;
680  verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n"
681               "         /* parameter 2 */ aaaaaa,\n"
682               "         /* parameter 3 */ aaaaaa,\n"
683               "         /* parameter 4 */ aaaaaa);",
684               NoBinPacking);
685}
686
687TEST_F(FormatTest, AlignsMultiLineComments) {
688  EXPECT_EQ("/*\n"
689            " * Really multi-line\n"
690            " * comment.\n"
691            " */\n"
692            "void f() {}",
693            format("  /*\n"
694                   "   * Really multi-line\n"
695                   "   * comment.\n"
696                   "   */\n"
697                   "  void f() {}"));
698  EXPECT_EQ("class C {\n"
699            "  /*\n"
700            "   * Another multi-line\n"
701            "   * comment.\n"
702            "   */\n"
703            "  void f() {}\n"
704            "};",
705            format("class C {\n"
706                   "/*\n"
707                   " * Another multi-line\n"
708                   " * comment.\n"
709                   " */\n"
710                   "void f() {}\n"
711                   "};"));
712  EXPECT_EQ("/*\n"
713            "  1. This is a comment with non-trivial formatting.\n"
714            "     1.1. We have to indent/outdent all lines equally\n"
715            "         1.1.1. to keep the formatting.\n"
716            " */",
717            format("  /*\n"
718                   "    1. This is a comment with non-trivial formatting.\n"
719                   "       1.1. We have to indent/outdent all lines equally\n"
720                   "           1.1.1. to keep the formatting.\n"
721                   "   */"));
722  EXPECT_EQ("/*\n"
723            " Don't try to outdent if there's not enough inentation.\n"
724            " */",
725            format("  /*\n"
726                   " Don't try to outdent if there's not enough inentation.\n"
727                   " */"));
728}
729
730TEST_F(FormatTest, SplitsLongCxxComments) {
731  EXPECT_EQ("// A comment that\n"
732            "// doesn't fit on\n"
733            "// one line",
734            format("// A comment that doesn't fit on one line",
735                   getLLVMStyleWithColumns(20)));
736  EXPECT_EQ("// a b c d\n"
737            "// e f  g\n"
738            "// h i j k",
739            format("// a b c d e f  g h i j k",
740                   getLLVMStyleWithColumns(10)));
741  EXPECT_EQ("// a b c d\n"
742            "// e f  g\n"
743            "// h i j k",
744            format("\\\n// a b c d e f  g h i j k",
745                   getLLVMStyleWithColumns(10)));
746  EXPECT_EQ("if (true) // A comment that\n"
747            "          // doesn't fit on\n"
748            "          // one line",
749            format("if (true) // A comment that doesn't fit on one line   ",
750                   getLLVMStyleWithColumns(30)));
751  EXPECT_EQ("//    Don't_touch_leading_whitespace",
752            format("//    Don't_touch_leading_whitespace",
753                   getLLVMStyleWithColumns(20)));
754  EXPECT_EQ(
755      "//Don't add leading\n"
756      "//whitespace",
757      format("//Don't add leading whitespace", getLLVMStyleWithColumns(20)));
758  EXPECT_EQ("// A comment before\n"
759            "// a macro\n"
760            "// definition\n"
761            "#define a b",
762            format("// A comment before a macro definition\n"
763                   "#define a b",
764                   getLLVMStyleWithColumns(20)));
765}
766
767TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) {
768  EXPECT_EQ("namespace {\n}\n// Test\n#define A",
769            format("namespace {}\n   // Test\n#define A"));
770  EXPECT_EQ("namespace {\n}\n/* Test */\n#define A",
771            format("namespace {}\n   /* Test */\n#define A"));
772  EXPECT_EQ("namespace {\n}\n/* Test */ #define A",
773            format("namespace {}\n   /* Test */    #define A"));
774}
775
776TEST_F(FormatTest, SplitsLongLinesInComments) {
777  EXPECT_EQ("/* This is a long\n"
778            " * comment that\n"
779            " * doesn't\n"
780            " * fit on one line.\n"
781            " */",
782            format("/* "
783                   "This is a long                                         "
784                   "comment that "
785                   "doesn't                                    "
786                   "fit on one line.  */",
787                   getLLVMStyleWithColumns(20)));
788  EXPECT_EQ("/* a b c d\n"
789            " * e f  g\n"
790            " * h i j k\n"
791            " */",
792            format("/* a b c d e f  g h i j k */",
793                   getLLVMStyleWithColumns(10)));
794  EXPECT_EQ("/* a b c d\n"
795            " * e f  g\n"
796            " * h i j k\n"
797            " */",
798            format("\\\n/* a b c d e f  g h i j k */",
799                   getLLVMStyleWithColumns(10)));
800  EXPECT_EQ("/*\n"
801            "This is a long\n"
802            "comment that doesn't\n"
803            "fit on one line.\n"
804            "*/",
805            format("/*\n"
806                   "This is a long                                         "
807                   "comment that doesn't                                    "
808                   "fit on one line.                                      \n"
809                   "*/", getLLVMStyleWithColumns(20)));
810  EXPECT_EQ("/*\n"
811            " * This is a long\n"
812            " * comment that\n"
813            " * doesn't fit on\n"
814            " * one line.\n"
815            " */",
816            format("/*      \n"
817                   " * This is a long "
818                   "   comment that     "
819                   "   doesn't fit on   "
820                   "   one line.                                            \n"
821                   " */", getLLVMStyleWithColumns(20)));
822  EXPECT_EQ("/*\n"
823            " * This_is_a_comment_with_words_that_dont_fit_on_one_line\n"
824            " * so_it_should_be_broken\n"
825            " * wherever_a_space_occurs\n"
826            " */",
827            format("/*\n"
828                   " * This_is_a_comment_with_words_that_dont_fit_on_one_line "
829                   "   so_it_should_be_broken "
830                   "   wherever_a_space_occurs                             \n"
831                   " */",
832                   getLLVMStyleWithColumns(20)));
833  EXPECT_EQ("/*\n"
834            " *    This_comment_can_not_be_broken_into_lines\n"
835            " */",
836            format("/*\n"
837                   " *    This_comment_can_not_be_broken_into_lines\n"
838                   " */",
839                   getLLVMStyleWithColumns(20)));
840  EXPECT_EQ("{\n"
841            "  /*\n"
842            "  This is another\n"
843            "  long comment that\n"
844            "  doesn't fit on one\n"
845            "  line    1234567890\n"
846            "  */\n"
847            "}",
848            format("{\n"
849                   "/*\n"
850                   "This is another     "
851                   "  long comment that "
852                   "  doesn't fit on one"
853                   "  line    1234567890\n"
854                   "*/\n"
855                   "}", getLLVMStyleWithColumns(20)));
856  EXPECT_EQ("{\n"
857            "  /*\n"
858            "   * This        i s\n"
859            "   * another comment\n"
860            "   * t hat  doesn' t\n"
861            "   * fit on one l i\n"
862            "   * n e\n"
863            "   */\n"
864            "}",
865            format("{\n"
866                   "/*\n"
867                   " * This        i s"
868                   "   another comment"
869                   "   t hat  doesn' t"
870                   "   fit on one l i"
871                   "   n e\n"
872                   " */\n"
873                   "}", getLLVMStyleWithColumns(20)));
874  EXPECT_EQ("/*\n"
875            " * This is a long\n"
876            " * comment that\n"
877            " * doesn't fit on\n"
878            " * one line\n"
879            " */",
880            format("   /*\n"
881                   "    * This is a long comment that doesn't fit on one line\n"
882                   "    */", getLLVMStyleWithColumns(20)));
883  EXPECT_EQ("{\n"
884            "  if (something) /* This is a\n"
885            "long comment */\n"
886            "    ;\n"
887            "}",
888            format("{\n"
889                   "  if (something) /* This is a long comment */\n"
890                   "    ;\n"
891                   "}",
892                   getLLVMStyleWithColumns(30)));
893}
894
895TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) {
896  EXPECT_EQ("#define X          \\\n"
897            "  /*               \\\n"
898            "   Test            \\\n"
899            "   Macro comment   \\\n"
900            "   with a long     \\\n"
901            "   line            \\\n"
902            "   */              \\\n"
903            "  A + B",
904            format("#define X \\\n"
905                   "  /*\n"
906                   "   Test\n"
907                   "   Macro comment with a long  line\n"
908                   "   */ \\\n"
909                   "  A + B",
910                   getLLVMStyleWithColumns(20)));
911  EXPECT_EQ("#define X          \\\n"
912            "  /* Macro comment \\\n"
913            "     with a long   \\\n"
914            "     line */       \\\n"
915            "  A + B",
916            format("#define X \\\n"
917                   "  /* Macro comment with a long\n"
918                   "     line */ \\\n"
919                   "  A + B",
920                   getLLVMStyleWithColumns(20)));
921  EXPECT_EQ("#define X          \\\n"
922            "  /* Macro comment \\\n"
923            "   * with a long   \\\n"
924            "   * line */       \\\n"
925            "  A + B",
926            format("#define X \\\n"
927                   "  /* Macro comment with a long  line */ \\\n"
928                   "  A + B",
929                   getLLVMStyleWithColumns(20)));
930}
931
932TEST_F(FormatTest, CommentsInStaticInitializers) {
933  EXPECT_EQ(
934      "static SomeType type = { aaaaaaaaaaaaaaaaaaaa, /* comment */\n"
935      "                         aaaaaaaaaaaaaaaaaaaa /* comment */,\n"
936      "                         /* comment */ aaaaaaaaaaaaaaaaaaaa,\n"
937      "                         aaaaaaaaaaaaaaaaaaaa, // comment\n"
938      "                         aaaaaaaaaaaaaaaaaaaa };",
939      format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa  ,  /* comment */\n"
940             "                   aaaaaaaaaaaaaaaaaaaa   /* comment */ ,\n"
941             "                     /* comment */   aaaaaaaaaaaaaaaaaaaa ,\n"
942             "              aaaaaaaaaaaaaaaaaaaa ,   // comment\n"
943             "                  aaaaaaaaaaaaaaaaaaaa };"));
944  verifyFormat("static SomeType type = { aaaaaaaaaaa, // comment for aa...\n"
945               "                         bbbbbbbbbbb, ccccccccccc };");
946  verifyFormat("static SomeType type = { aaaaaaaaaaa,\n"
947               "                         // comment for bb....\n"
948               "                         bbbbbbbbbbb, ccccccccccc };");
949  verifyGoogleFormat(
950      "static SomeType type = { aaaaaaaaaaa,  // comment for aa...\n"
951      "                         bbbbbbbbbbb, ccccccccccc };");
952  verifyGoogleFormat("static SomeType type = { aaaaaaaaaaa,\n"
953                     "                         // comment for bb....\n"
954                     "                         bbbbbbbbbbb, ccccccccccc };");
955
956  verifyFormat("S s = { { a, b, c },   // Group #1\n"
957               "        { d, e, f },   // Group #2\n"
958               "        { g, h, i } }; // Group #3");
959  verifyFormat("S s = { { // Group #1\n"
960               "          a, b, c },\n"
961               "        { // Group #2\n"
962               "          d, e, f },\n"
963               "        { // Group #3\n"
964               "          g, h, i } };");
965
966  EXPECT_EQ("S s = {\n"
967            "  // Some comment\n"
968            "  a,\n"
969            "\n"
970            "  // Comment after empty line\n"
971            "  b\n"
972            "}",
973            format("S s =    {\n"
974                   "      // Some comment\n"
975                   "  a,\n"
976                   "  \n"
977                   "     // Comment after empty line\n"
978                   "      b\n"
979                   "}"));
980  EXPECT_EQ("S s = { a, b };", format("S s = {\n"
981                                      "  a,\n"
982                                      "\n"
983                                      "  b\n"
984                                      "};"));
985  verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n"
986               "  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
987               "  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
988               "  0x00, 0x00, 0x00, 0x00              // comment\n"
989               "};");
990}
991
992//===----------------------------------------------------------------------===//
993// Tests for classes, namespaces, etc.
994//===----------------------------------------------------------------------===//
995
996TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) {
997  verifyFormat("class A {\n};");
998}
999
1000TEST_F(FormatTest, UnderstandsAccessSpecifiers) {
1001  verifyFormat("class A {\n"
1002               "public:\n"
1003               "public: // comment\n"
1004               "protected:\n"
1005               "private:\n"
1006               "  void f() {}\n"
1007               "};");
1008  verifyGoogleFormat("class A {\n"
1009                     " public:\n"
1010                     " protected:\n"
1011                     " private:\n"
1012                     "  void f() {}\n"
1013                     "};");
1014}
1015
1016TEST_F(FormatTest, SeparatesLogicalBlocks) {
1017  EXPECT_EQ("class A {\n"
1018            "public:\n"
1019            "  void f();\n"
1020            "\n"
1021            "private:\n"
1022            "  void g() {}\n"
1023            "  // test\n"
1024            "protected:\n"
1025            "  int h;\n"
1026            "};",
1027            format("class A {\n"
1028                   "public:\n"
1029                   "void f();\n"
1030                   "private:\n"
1031                   "void g() {}\n"
1032                   "// test\n"
1033                   "protected:\n"
1034                   "int h;\n"
1035                   "};"));
1036}
1037
1038TEST_F(FormatTest, FormatsClasses) {
1039  verifyFormat("class A : public B {\n};");
1040  verifyFormat("class A : public ::B {\n};");
1041
1042  verifyFormat(
1043      "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
1044      "                             public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {\n"
1045      "};\n");
1046  verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n"
1047               "    : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
1048               "      public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {\n"
1049               "};\n");
1050  verifyFormat(
1051      "class A : public B, public C, public D, public E, public F, public G {\n"
1052      "};");
1053  verifyFormat("class AAAAAAAAAAAA : public B,\n"
1054               "                     public C,\n"
1055               "                     public D,\n"
1056               "                     public E,\n"
1057               "                     public F,\n"
1058               "                     public G {\n"
1059               "};");
1060
1061  verifyFormat("class\n"
1062               "    ReallyReallyLongClassName {\n};",
1063               getLLVMStyleWithColumns(32));
1064}
1065
1066TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) {
1067  verifyFormat("class A {\n} a, b;");
1068  verifyFormat("struct A {\n} a, b;");
1069  verifyFormat("union A {\n} a;");
1070}
1071
1072TEST_F(FormatTest, FormatsEnum) {
1073  verifyFormat("enum {\n"
1074               "  Zero,\n"
1075               "  One = 1,\n"
1076               "  Two = One + 1,\n"
1077               "  Three = (One + Two),\n"
1078               "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
1079               "  Five = (One, Two, Three, Four, 5)\n"
1080               "};");
1081  verifyFormat("enum Enum {\n"
1082               "};");
1083  verifyFormat("enum {\n"
1084               "};");
1085  verifyFormat("enum X E {\n} d;");
1086  verifyFormat("enum __attribute__((...)) E {\n} d;");
1087  verifyFormat("enum __declspec__((...)) E {\n} d;");
1088  verifyFormat("enum X f() {\n  a();\n  return 42;\n}");
1089}
1090
1091TEST_F(FormatTest, FormatsBitfields) {
1092  verifyFormat("struct Bitfields {\n"
1093               "  unsigned sClass : 8;\n"
1094               "  unsigned ValueKind : 2;\n"
1095               "};");
1096}
1097
1098TEST_F(FormatTest, FormatsNamespaces) {
1099  verifyFormat("namespace some_namespace {\n"
1100               "class A {\n};\n"
1101               "void f() { f(); }\n"
1102               "}");
1103  verifyFormat("namespace {\n"
1104               "class A {\n};\n"
1105               "void f() { f(); }\n"
1106               "}");
1107  verifyFormat("inline namespace X {\n"
1108               "class A {\n};\n"
1109               "void f() { f(); }\n"
1110               "}");
1111  verifyFormat("using namespace some_namespace;\n"
1112               "class A {\n};\n"
1113               "void f() { f(); }");
1114
1115  // This code is more common than we thought; if we
1116  // layout this correctly the semicolon will go into
1117  // its own line, which is undesireable.
1118  verifyFormat("namespace {\n};");
1119  verifyFormat("namespace {\n"
1120               "class A {\n"
1121               "};\n"
1122               "};");
1123}
1124
1125TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); }
1126
1127TEST_F(FormatTest, FormatsInlineASM) {
1128  verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));");
1129  verifyFormat(
1130      "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n"
1131      "    \"cpuid\\n\\t\"\n"
1132      "    \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n"
1133      "    : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n"
1134      "    : \"a\"(value));");
1135}
1136
1137TEST_F(FormatTest, FormatTryCatch) {
1138  // FIXME: Handle try-catch explicitly in the UnwrappedLineParser, then we'll
1139  // also not create single-line-blocks.
1140  verifyFormat("try {\n"
1141               "  throw a * b;\n"
1142               "}\n"
1143               "catch (int a) {\n"
1144               "  // Do nothing.\n"
1145               "}\n"
1146               "catch (...) {\n"
1147               "  exit(42);\n"
1148               "}");
1149
1150  // Function-level try statements.
1151  verifyFormat("int f() try { return 4; }\n"
1152               "catch (...) {\n"
1153               "  return 5;\n"
1154               "}");
1155  verifyFormat("class A {\n"
1156               "  int a;\n"
1157               "  A() try : a(0) {}\n"
1158               "  catch (...) {\n"
1159               "    throw;\n"
1160               "  }\n"
1161               "};\n");
1162}
1163
1164TEST_F(FormatTest, FormatObjCTryCatch) {
1165  verifyFormat("@try {\n"
1166               "  f();\n"
1167               "}\n"
1168               "@catch (NSException e) {\n"
1169               "  @throw;\n"
1170               "}\n"
1171               "@finally {\n"
1172               "  exit(42);\n"
1173               "}");
1174}
1175
1176TEST_F(FormatTest, StaticInitializers) {
1177  verifyFormat("static SomeClass SC = { 1, 'a' };");
1178
1179  // FIXME: Format like enums if the static initializer does not fit on a line.
1180  verifyFormat(
1181      "static SomeClass WithALoooooooooooooooooooongName = {\n"
1182      "  100000000, \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
1183      "};");
1184
1185  verifyFormat(
1186      "static SomeClass = { a, b, c, d, e, f, g, h, i, j,\n"
1187      "                     looooooooooooooooooooooooooooooooooongname,\n"
1188      "                     looooooooooooooooooooooooooooooong };");
1189  // Allow bin-packing in static initializers as this would often lead to
1190  // terrible results, e.g.:
1191  verifyGoogleFormat(
1192      "static SomeClass = { a, b, c, d, e, f, g, h, i, j,\n"
1193      "                     looooooooooooooooooooooooooooooooooongname,\n"
1194      "                     looooooooooooooooooooooooooooooong };");
1195  // Here, everything other than the "}" would fit on a line.
1196  verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n"
1197               "  100000000000000000000000\n"
1198               "};");
1199
1200  // FIXME: This would fit into the column limit if we'd fit "{ {" on the first
1201  // line. However, the formatting looks a bit off and this probably doesn't
1202  // happen often in practice.
1203  verifyFormat("static int Variable[1] = {\n"
1204               "  { 1000000000000000000000000000000000000 }\n"
1205               "};",
1206               getLLVMStyleWithColumns(40));
1207}
1208
1209TEST_F(FormatTest, NestedStaticInitializers) {
1210  verifyFormat("static A x = { { {} } };\n");
1211  verifyFormat("static A x = { { { init1, init2, init3, init4 },\n"
1212               "                 { init1, init2, init3, init4 } } };");
1213
1214  verifyFormat("somes Status::global_reps[3] = {\n"
1215               "  { kGlobalRef, OK_CODE, NULL, NULL, NULL },\n"
1216               "  { kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL },\n"
1217               "  { kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL }\n"
1218               "};");
1219  verifyGoogleFormat("somes Status::global_reps[3] = {\n"
1220                     "  { kGlobalRef, OK_CODE, NULL, NULL, NULL },\n"
1221                     "  { kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL },\n"
1222                     "  { kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL }\n"
1223                     "};");
1224  verifyFormat(
1225      "CGRect cg_rect = { { rect.fLeft, rect.fTop },\n"
1226      "                   { rect.fRight - rect.fLeft, rect.fBottom - rect.fTop"
1227      " } };");
1228
1229  verifyFormat(
1230      "SomeArrayOfSomeType a = { { { 1, 2, 3 }, { 1, 2, 3 },\n"
1231      "                            { 111111111111111111111111111111,\n"
1232      "                              222222222222222222222222222222,\n"
1233      "                              333333333333333333333333333333 },\n"
1234      "                            { 1, 2, 3 }, { 1, 2, 3 } } };");
1235  verifyFormat(
1236      "SomeArrayOfSomeType a = { { { 1, 2, 3 } }, { { 1, 2, 3 } },\n"
1237      "                          { { 111111111111111111111111111111,\n"
1238      "                              222222222222222222222222222222,\n"
1239      "                              333333333333333333333333333333 } },\n"
1240      "                          { { 1, 2, 3 } }, { { 1, 2, 3 } } };");
1241
1242  // FIXME: We might at some point want to handle this similar to parameter
1243  // lists, where we have an option to put each on a single line.
1244  verifyFormat(
1245      "struct {\n"
1246      "  unsigned bit;\n"
1247      "  const char *const name;\n"
1248      "} kBitsToOs[] = { { kOsMac, \"Mac\" }, { kOsWin, \"Windows\" },\n"
1249      "                  { kOsLinux, \"Linux\" }, { kOsCrOS, \"Chrome OS\" } };");
1250}
1251
1252TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) {
1253  verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro("
1254               "                      \\\n"
1255               "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)");
1256}
1257
1258TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) {
1259  verifyFormat(
1260      "virtual void write(ELFWriter *writerrr,\n"
1261      "                   OwningPtr<FileOutputBuffer> &buffer) = 0;");
1262}
1263
1264TEST_F(FormatTest, LayoutUnknownPPDirective) {
1265  EXPECT_EQ("#123 \"A string literal\"",
1266            format("   #     123    \"A string literal\""));
1267  EXPECT_EQ("#;", format("#;"));
1268  verifyFormat("#\n;\n;\n;");
1269}
1270
1271TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) {
1272  EXPECT_EQ("#line 42 \"test\"\n",
1273            format("#  \\\n  line  \\\n  42  \\\n  \"test\"\n"));
1274  EXPECT_EQ("#define A B\n", format("#  \\\n define  \\\n    A  \\\n       B\n",
1275                                    getLLVMStyleWithColumns(12)));
1276}
1277
1278TEST_F(FormatTest, EndOfFileEndsPPDirective) {
1279  EXPECT_EQ("#line 42 \"test\"",
1280            format("#  \\\n  line  \\\n  42  \\\n  \"test\""));
1281  EXPECT_EQ("#define A B", format("#  \\\n define  \\\n    A  \\\n       B"));
1282}
1283
1284TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) {
1285  verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13));
1286  verifyFormat("#define A( \\\n    BB)", getLLVMStyleWithColumns(12));
1287  verifyFormat("#define A( \\\n    A, B)", getLLVMStyleWithColumns(12));
1288  // FIXME: We never break before the macro name.
1289  verifyFormat("#define AA(\\\n    B)", getLLVMStyleWithColumns(12));
1290
1291  verifyFormat("#define A A\n#define A A");
1292  verifyFormat("#define A(X) A\n#define A A");
1293
1294  verifyFormat("#define Something Other", getLLVMStyleWithColumns(23));
1295  verifyFormat("#define Something    \\\n  Other", getLLVMStyleWithColumns(22));
1296}
1297
1298TEST_F(FormatTest, HandlePreprocessorDirectiveContext) {
1299  EXPECT_EQ("// somecomment\n"
1300            "#include \"a.h\"\n"
1301            "#define A(  \\\n"
1302            "    A, B)\n"
1303            "#include \"b.h\"\n"
1304            "// somecomment\n",
1305            format("  // somecomment\n"
1306                   "  #include \"a.h\"\n"
1307                   "#define A(A,\\\n"
1308                   "    B)\n"
1309                   "    #include \"b.h\"\n"
1310                   " // somecomment\n",
1311                   getLLVMStyleWithColumns(13)));
1312}
1313
1314TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); }
1315
1316TEST_F(FormatTest, LayoutCodeInMacroDefinitions) {
1317  EXPECT_EQ("#define A    \\\n"
1318            "  c;         \\\n"
1319            "  e;\n"
1320            "f;",
1321            format("#define A c; e;\n"
1322                   "f;",
1323                   getLLVMStyleWithColumns(14)));
1324}
1325
1326TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); }
1327
1328TEST_F(FormatTest, AlwaysFormatsEntireMacroDefinitions) {
1329  EXPECT_EQ("int  i;\n"
1330            "#define A \\\n"
1331            "  int i;  \\\n"
1332            "  int j\n"
1333            "int  k;",
1334            format("int  i;\n"
1335                   "#define A  \\\n"
1336                   " int   i    ;  \\\n"
1337                   " int   j\n"
1338                   "int  k;",
1339                   8, 0, getGoogleStyle())); // 8: position of "#define".
1340  EXPECT_EQ("int  i;\n"
1341            "#define A \\\n"
1342            "  int i;  \\\n"
1343            "  int j\n"
1344            "int  k;",
1345            format("int  i;\n"
1346                   "#define A  \\\n"
1347                   " int   i    ;  \\\n"
1348                   " int   j\n"
1349                   "int  k;",
1350                   45, 0, getGoogleStyle())); // 45: position of "j".
1351}
1352
1353TEST_F(FormatTest, MacroDefinitionInsideStatement) {
1354  EXPECT_EQ("int x,\n"
1355            "#define A\n"
1356            "    y;",
1357            format("int x,\n#define A\ny;"));
1358}
1359
1360TEST_F(FormatTest, HashInMacroDefinition) {
1361  verifyFormat("#define A \\\n  b #c;", getLLVMStyleWithColumns(11));
1362  verifyFormat("#define A \\\n"
1363               "  {       \\\n"
1364               "    f(#c);\\\n"
1365               "  }",
1366               getLLVMStyleWithColumns(11));
1367
1368  verifyFormat("#define A(X)         \\\n"
1369               "  void function##X()",
1370               getLLVMStyleWithColumns(22));
1371
1372  verifyFormat("#define A(a, b, c)   \\\n"
1373               "  void a##b##c()",
1374               getLLVMStyleWithColumns(22));
1375
1376  verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
1377}
1378
1379TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
1380  verifyFormat("#define A (1)");
1381}
1382
1383TEST_F(FormatTest, EmptyLinesInMacroDefinitions) {
1384  EXPECT_EQ("#define A b;", format("#define A \\\n"
1385                                   "          \\\n"
1386                                   "  b;",
1387                                   getLLVMStyleWithColumns(25)));
1388  EXPECT_EQ("#define A \\\n"
1389            "          \\\n"
1390            "  a;      \\\n"
1391            "  b;",
1392            format("#define A \\\n"
1393                   "          \\\n"
1394                   "  a;      \\\n"
1395                   "  b;",
1396                   getLLVMStyleWithColumns(11)));
1397  EXPECT_EQ("#define A \\\n"
1398            "  a;      \\\n"
1399            "          \\\n"
1400            "  b;",
1401            format("#define A \\\n"
1402                   "  a;      \\\n"
1403                   "          \\\n"
1404                   "  b;",
1405                   getLLVMStyleWithColumns(11)));
1406}
1407
1408TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) {
1409  verifyFormat("#define A :");
1410
1411  // FIXME: Improve formatting of case labels in macros.
1412  verifyFormat("#define SOMECASES  \\\n"
1413               "  case 1:          \\\n"
1414               "  case 2\n",
1415               getLLVMStyleWithColumns(20));
1416
1417  verifyFormat("#define A template <typename T>");
1418  verifyFormat("#define STR(x) #x\n"
1419               "f(STR(this_is_a_string_literal{));");
1420}
1421
1422TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) {
1423  EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
1424            "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
1425            "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
1426            "class X {\n"
1427            "};\n"
1428            "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
1429            "int *createScopDetectionPass() { return 0; }",
1430            format("  INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n"
1431                   "  INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n"
1432                   "  INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n"
1433                   "  class X {};\n"
1434                   "  INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n"
1435                   "  int *createScopDetectionPass() { return 0; }"));
1436  // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as
1437  // braces, so that inner block is indented one level more.
1438  EXPECT_EQ("int q() {\n"
1439            "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
1440            "  IPC_MESSAGE_HANDLER(xxx, qqq)\n"
1441            "  IPC_END_MESSAGE_MAP()\n"
1442            "}",
1443            format("int q() {\n"
1444                   "  IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n"
1445                   "    IPC_MESSAGE_HANDLER(xxx, qqq)\n"
1446                   "  IPC_END_MESSAGE_MAP()\n"
1447                   "}"));
1448  EXPECT_EQ("int q() {\n"
1449            "  f(x);\n"
1450            "  f(x) {}\n"
1451            "  f(x)->g();\n"
1452            "  f(x)->*g();\n"
1453            "  f(x).g();\n"
1454            "  f(x) = x;\n"
1455            "  f(x) += x;\n"
1456            "  f(x) -= x;\n"
1457            "  f(x) *= x;\n"
1458            "  f(x) /= x;\n"
1459            "  f(x) %= x;\n"
1460            "  f(x) &= x;\n"
1461            "  f(x) |= x;\n"
1462            "  f(x) ^= x;\n"
1463            "  f(x) >>= x;\n"
1464            "  f(x) <<= x;\n"
1465            "  f(x)[y].z();\n"
1466            "  LOG(INFO) << x;\n"
1467            "  ifstream(x) >> x;\n"
1468            "}\n",
1469            format("int q() {\n"
1470                   "  f(x)\n;\n"
1471                   "  f(x)\n {}\n"
1472                   "  f(x)\n->g();\n"
1473                   "  f(x)\n->*g();\n"
1474                   "  f(x)\n.g();\n"
1475                   "  f(x)\n = x;\n"
1476                   "  f(x)\n += x;\n"
1477                   "  f(x)\n -= x;\n"
1478                   "  f(x)\n *= x;\n"
1479                   "  f(x)\n /= x;\n"
1480                   "  f(x)\n %= x;\n"
1481                   "  f(x)\n &= x;\n"
1482                   "  f(x)\n |= x;\n"
1483                   "  f(x)\n ^= x;\n"
1484                   "  f(x)\n >>= x;\n"
1485                   "  f(x)\n <<= x;\n"
1486                   "  f(x)\n[y].z();\n"
1487                   "  LOG(INFO)\n << x;\n"
1488                   "  ifstream(x)\n >> x;\n"
1489                   "}\n"));
1490  EXPECT_EQ("int q() {\n"
1491            "  f(x)\n"
1492            "  if (1) {\n"
1493            "  }\n"
1494            "  f(x)\n"
1495            "  while (1) {\n"
1496            "  }\n"
1497            "  f(x)\n"
1498            "  g(x);\n"
1499            "  f(x)\n"
1500            "  try {\n"
1501            "    q();\n"
1502            "  }\n"
1503            "  catch (...) {\n"
1504            "  }\n"
1505            "}\n",
1506            format("int q() {\n"
1507                   "f(x)\n"
1508                   "if (1) {}\n"
1509                   "f(x)\n"
1510                   "while (1) {}\n"
1511                   "f(x)\n"
1512                   "g(x);\n"
1513                   "f(x)\n"
1514                   "try { q(); } catch (...) {}\n"
1515                   "}\n"));
1516  EXPECT_EQ("class A {\n"
1517            "  A() : t(0) {}\n"
1518            "  A(X x)\n" // FIXME: function-level try blocks are broken.
1519            "  try : t(0) {\n"
1520            "  }\n"
1521            "  catch (...) {\n"
1522            "  }\n"
1523            "};",
1524            format("class A {\n"
1525                   "  A()\n : t(0) {}\n"
1526                   "  A(X x)\n"
1527                   "  try : t(0) {} catch (...) {}\n"
1528                   "};"));
1529}
1530
1531TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) {
1532  EXPECT_EQ("{\n  {\n#define A\n  }\n}", format("{{\n#define A\n}}"));
1533}
1534
1535TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) {
1536  verifyFormat("{\n  { a #c; }\n}");
1537}
1538
1539TEST_F(FormatTest, FormatUnbalancedStructuralElements) {
1540  EXPECT_EQ("#define A \\\n  {       \\\n    {\nint i;",
1541            format("#define A { {\nint i;", getLLVMStyleWithColumns(11)));
1542  EXPECT_EQ("#define A \\\n  }       \\\n  }\nint i;",
1543            format("#define A } }\nint i;", getLLVMStyleWithColumns(11)));
1544}
1545
1546TEST_F(FormatTest, EscapedNewlineAtStartOfTokenInMacroDefinition) {
1547  EXPECT_EQ(
1548      "#define A \\\n  int i;  \\\n  int j;",
1549      format("#define A \\\nint i;\\\n  int j;", getLLVMStyleWithColumns(11)));
1550}
1551
1552TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) {
1553  verifyFormat("#define A \\\n"
1554               "  int v(  \\\n"
1555               "      a); \\\n"
1556               "  int i;",
1557               getLLVMStyleWithColumns(11));
1558}
1559
1560TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) {
1561  EXPECT_EQ(
1562      "#define ALooooooooooooooooooooooooooooooooooooooongMacro("
1563      "                      \\\n"
1564      "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1565      "\n"
1566      "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1567      "    aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n",
1568      format("  #define   ALooooooooooooooooooooooooooooooooooooooongMacro("
1569             "\\\n"
1570             "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1571             "  \n"
1572             "   AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1573             "  aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n"));
1574}
1575
1576TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) {
1577  EXPECT_EQ("int\n"
1578            "#define A\n"
1579            "    a;",
1580            format("int\n#define A\na;"));
1581  verifyFormat("functionCallTo(\n"
1582               "    someOtherFunction(\n"
1583               "        withSomeParameters, whichInSequence,\n"
1584               "        areLongerThanALine(andAnotherCall,\n"
1585               "#define A B\n"
1586               "                           withMoreParamters,\n"
1587               "                           whichStronglyInfluenceTheLayout),\n"
1588               "        andMoreParameters),\n"
1589               "    trailing);",
1590               getLLVMStyleWithColumns(69));
1591}
1592
1593TEST_F(FormatTest, LayoutBlockInsideParens) {
1594  EXPECT_EQ("functionCall({\n"
1595            "  int i;\n"
1596            "});",
1597            format(" functionCall ( {int i;} );"));
1598}
1599
1600TEST_F(FormatTest, LayoutBlockInsideStatement) {
1601  EXPECT_EQ("SOME_MACRO { int i; }\n"
1602            "int i;",
1603            format("  SOME_MACRO  {int i;}  int i;"));
1604}
1605
1606TEST_F(FormatTest, LayoutNestedBlocks) {
1607  verifyFormat("void AddOsStrings(unsigned bitmask) {\n"
1608               "  struct s {\n"
1609               "    int i;\n"
1610               "  };\n"
1611               "  s kBitsToOs[] = { { 10 } };\n"
1612               "  for (int i = 0; i < 10; ++i)\n"
1613               "    return;\n"
1614               "}");
1615}
1616
1617TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
1618  EXPECT_EQ("{}", format("{}"));
1619
1620  // Negative test for enum.
1621  verifyFormat("enum E {\n};");
1622
1623  // Note that when there's a missing ';', we still join...
1624  verifyFormat("enum E {}");
1625}
1626
1627//===----------------------------------------------------------------------===//
1628// Line break tests.
1629//===----------------------------------------------------------------------===//
1630
1631TEST_F(FormatTest, FormatsAwesomeMethodCall) {
1632  verifyFormat(
1633      "SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
1634      "                       parameter, parameter, parameter)),\n"
1635      "                   SecondLongCall(parameter));");
1636}
1637
1638TEST_F(FormatTest, PreventConfusingIndents) {
1639  verifyFormat(
1640      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1641      "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
1642      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1643      "    aaaaaaaaaaaaaaaaaaaaaaaa);");
1644  verifyFormat(
1645      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[\n"
1646      "    aaaaaaaaaaaaaaaaaaaaaaaa[\n"
1647      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa],\n"
1648      "    aaaaaaaaaaaaaaaaaaaaaaaa];");
1649  verifyFormat(
1650      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
1651      "    aaaaaaaaaaaaaaaaaaaaaaaa<\n"
1652      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n"
1653      "    aaaaaaaaaaaaaaaaaaaaaaaa>;");
1654  verifyFormat("int a = bbbb && ccc && fffff(\n"
1655               "#define A Just forcing a new line\n"
1656               "                           ddd);");
1657}
1658
1659TEST_F(FormatTest, LineBreakingInBinaryExpressions) {
1660  verifyFormat(
1661      "bool aaaaaaa =\n"
1662      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n"
1663      "    bbbbbbbb();");
1664  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n"
1665               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n"
1666               "    ccccccccc == ddddddddddd;");
1667
1668  verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n"
1669               "                 aaaaaa) &&\n"
1670               "         bbbbbb && cccccc;");
1671  verifyFormat("Whitespaces.addUntouchableComment(\n"
1672               "    SourceMgr.getSpellingColumnNumber(\n"
1673               "        TheLine.Last->FormatTok.Tok.getLocation()) -\n"
1674               "    1);");
1675
1676  FormatStyle OnePerLine = getLLVMStyle();
1677  OnePerLine.BinPackParameters = false;
1678  verifyFormat(
1679      "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
1680      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
1681      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}",
1682      OnePerLine);
1683}
1684
1685TEST_F(FormatTest, ExpressionIndentation) {
1686  verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1687               "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1688               "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
1689               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
1690               "                         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n"
1691               "                     bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n"
1692               "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
1693               "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n"
1694               "                 ccccccccccccccccccccccccccccccccccccccccc;");
1695  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
1696               "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1697               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
1698               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
1699  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1700               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
1701               "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
1702               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
1703  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n"
1704               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
1705               "            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1706               "        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}");
1707}
1708
1709TEST_F(FormatTest, ConstructorInitializers) {
1710  verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
1711  verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}",
1712               getLLVMStyleWithColumns(45));
1713  verifyFormat("Constructor()\n"
1714               "    : Inttializer(FitsOnTheLine) {}",
1715               getLLVMStyleWithColumns(44));
1716  verifyFormat("Constructor()\n"
1717               "    : Inttializer(FitsOnTheLine) {}",
1718               getLLVMStyleWithColumns(43));
1719
1720  verifyFormat(
1721      "SomeClass::Constructor()\n"
1722      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
1723
1724  verifyFormat(
1725      "SomeClass::Constructor()\n"
1726      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1727      "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}");
1728  verifyFormat(
1729      "SomeClass::Constructor()\n"
1730      "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1731      "      aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
1732
1733  verifyFormat("Constructor()\n"
1734               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1735               "      aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1736               "                               aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1737               "      aaaaaaaaaaaaaaaaaaaaaaa() {}");
1738
1739  verifyFormat("Constructor()\n"
1740               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1741               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1742
1743  verifyFormat("Constructor(int Parameter = 0)\n"
1744               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
1745               "      aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}");
1746
1747  // Here a line could be saved by splitting the second initializer onto two
1748  // lines, but that is not desireable.
1749  verifyFormat("Constructor()\n"
1750               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
1751               "      aaaaaaaaaaa(aaaaaaaaaaa),\n"
1752               "      aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1753
1754  FormatStyle OnePerLine = getLLVMStyle();
1755  OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
1756  verifyFormat("SomeClass::Constructor()\n"
1757               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1758               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1759               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
1760               OnePerLine);
1761  verifyFormat("SomeClass::Constructor()\n"
1762               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
1763               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1764               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
1765               OnePerLine);
1766  verifyFormat("MyClass::MyClass(int var)\n"
1767               "    : some_var_(var),            // 4 space indent\n"
1768               "      some_other_var_(var + 1) { // lined up\n"
1769               "}",
1770               OnePerLine);
1771  verifyFormat("Constructor()\n"
1772               "    : aaaaa(aaaaaa),\n"
1773               "      aaaaa(aaaaaa),\n"
1774               "      aaaaa(aaaaaa),\n"
1775               "      aaaaa(aaaaaa),\n"
1776               "      aaaaa(aaaaaa) {}",
1777               OnePerLine);
1778  verifyFormat("Constructor()\n"
1779               "    : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n"
1780               "            aaaaaaaaaaaaaaaaaaaaaa) {}",
1781               OnePerLine);
1782}
1783
1784TEST_F(FormatTest, MemoizationTests) {
1785  // This breaks if the memoization lookup does not take \c Indent and
1786  // \c LastSpace into account.
1787  verifyFormat(
1788      "extern CFRunLoopTimerRef\n"
1789      "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n"
1790      "                     CFTimeInterval interval, CFOptionFlags flags,\n"
1791      "                     CFIndex order, CFRunLoopTimerCallBack callout,\n"
1792      "                     CFRunLoopTimerContext *context) {}");
1793
1794  // Deep nesting somewhat works around our memoization.
1795  verifyFormat(
1796      "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
1797      "    aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
1798      "        aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
1799      "            aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n"
1800      "                aaaaa())))))))))))))))))))))))))))))))))))))));",
1801      getLLVMStyleWithColumns(65));
1802  verifyFormat(
1803      "aaaaa(\n"
1804      "    aaaaa,\n"
1805      "    aaaaa(\n"
1806      "        aaaaa,\n"
1807      "        aaaaa(\n"
1808      "            aaaaa,\n"
1809      "            aaaaa(\n"
1810      "                aaaaa,\n"
1811      "                aaaaa(\n"
1812      "                    aaaaa,\n"
1813      "                    aaaaa(\n"
1814      "                        aaaaa,\n"
1815      "                        aaaaa(\n"
1816      "                            aaaaa,\n"
1817      "                            aaaaa(\n"
1818      "                                aaaaa,\n"
1819      "                                aaaaa(\n"
1820      "                                    aaaaa,\n"
1821      "                                    aaaaa(\n"
1822      "                                        aaaaa,\n"
1823      "                                        aaaaa(\n"
1824      "                                            aaaaa,\n"
1825      "                                            aaaaa(\n"
1826      "                                                aaaaa,\n"
1827      "                                                aaaaa))))))))))));",
1828      getLLVMStyleWithColumns(65));
1829  verifyFormat(
1830      "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"
1831      "                                  a),\n"
1832      "                                a),\n"
1833      "                              a),\n"
1834      "                            a),\n"
1835      "                          a),\n"
1836      "                        a),\n"
1837      "                      a),\n"
1838      "                    a),\n"
1839      "                  a),\n"
1840      "                a),\n"
1841      "              a),\n"
1842      "            a),\n"
1843      "          a),\n"
1844      "        a),\n"
1845      "      a),\n"
1846      "    a),\n"
1847      "  a)",
1848      getLLVMStyleWithColumns(65));
1849
1850  // This test takes VERY long when memoization is broken.
1851  FormatStyle OnePerLine = getLLVMStyle();
1852  OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
1853  OnePerLine.BinPackParameters = false;
1854  std::string input = "Constructor()\n"
1855                      "    : aaaa(a,\n";
1856  for (unsigned i = 0, e = 80; i != e; ++i) {
1857    input += "           a,\n";
1858  }
1859  input += "           a) {}";
1860  verifyFormat(input, OnePerLine);
1861}
1862
1863TEST_F(FormatTest, BreaksAsHighAsPossible) {
1864  verifyFormat(
1865      "void f() {\n"
1866      "  if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
1867      "      (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
1868      "    f();\n"
1869      "}");
1870  verifyFormat("if (Intervals[i].getRange().getFirst() <\n"
1871               "    Intervals[i - 1].getRange().getLast()) {\n}");
1872}
1873
1874TEST_F(FormatTest, BreaksFunctionDeclarations) {
1875  // Principially, we break function declarations in a certain order:
1876  // 1) break amongst arguments.
1877  verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n"
1878               "                              Cccccccccccccc cccccccccccccc);");
1879
1880  // 2) break after return type.
1881  verifyFormat(
1882      "Aaaaaaaaaaaaaaaaaaaaaaaa\n"
1883      "    bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);");
1884
1885  // 3) break after (.
1886  verifyFormat(
1887      "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n"
1888      "    Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);");
1889
1890  // 4) break before after nested name specifiers.
1891  verifyFormat(
1892      "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1893      "    SomeClasssssssssssssssssssssssssssssssssssssss::\n"
1894      "        bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);");
1895
1896  // However, there are exceptions, if a sufficient amount of lines can be
1897  // saved.
1898  // FIXME: The precise cut-offs wrt. the number of saved lines might need some
1899  // more adjusting.
1900  verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
1901               "                                  Cccccccccccccc cccccccccc,\n"
1902               "                                  Cccccccccccccc cccccccccc,\n"
1903               "                                  Cccccccccccccc cccccccccc,\n"
1904               "                                  Cccccccccccccc cccccccccc);");
1905  verifyFormat(
1906      "Aaaaaaaaaaaaaaaaaa\n"
1907      "    bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
1908      "                Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
1909      "                Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);");
1910  verifyFormat(
1911      "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n"
1912      "                                          Cccccccccccccc cccccccccc,\n"
1913      "                                          Cccccccccccccc cccccccccc,\n"
1914      "                                          Cccccccccccccc cccccccccc,\n"
1915      "                                          Cccccccccccccc cccccccccc,\n"
1916      "                                          Cccccccccccccc cccccccccc,\n"
1917      "                                          Cccccccccccccc cccccccccc);");
1918  verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n"
1919               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
1920               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
1921               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n"
1922               "    Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);");
1923
1924  // Break after multi-line parameters.
1925  verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1926               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1927               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1928               "    bbbb bbbb);");
1929}
1930
1931TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) {
1932  verifyFormat("void someLongFunction(int someLongParameter)\n"
1933               "    const;",
1934               getLLVMStyleWithColumns(45));
1935
1936  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1937               "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
1938  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
1939               "    LOCKS_EXCLUDED(aaaaaaaaaaaaa);");
1940  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
1941               "    LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}");
1942
1943  verifyFormat(
1944      "void aaaaaaaaaaaaaaaaaa()\n"
1945      "    __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n"
1946      "                   aaaaaaaaaaaaaaaaaaaaaaaaa));");
1947  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1948               "    __attribute__((unused));");
1949  verifyFormat(
1950      "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1951      "    GUARDED_BY(aaaaaaaaaaaa);");
1952}
1953
1954
1955TEST_F(FormatTest, BreaksDesireably) {
1956  verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
1957               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
1958               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}");
1959  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1960               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
1961               "}");
1962
1963  verifyFormat(
1964      "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1965      "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1966
1967  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1968               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1969               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1970
1971  verifyFormat(
1972      "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1973      "                            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
1974      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1975      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
1976
1977  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
1978               "    (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1979
1980  verifyFormat(
1981      "void f() {\n"
1982      "  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
1983      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
1984      "}");
1985  verifyFormat(
1986      "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1987      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1988  verifyFormat(
1989      "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1990      "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1991  verifyFormat(
1992      "aaaaaaaaaaaaaaaaa(\n"
1993      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1994      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1995
1996  // This test case breaks on an incorrect memoization, i.e. an optimization not
1997  // taking into account the StopAt value.
1998  verifyFormat(
1999      "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
2000      "       aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
2001      "       aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
2002      "       (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2003
2004  verifyFormat("{\n  {\n    {\n"
2005               "      Annotation.SpaceRequiredBefore =\n"
2006               "          Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n"
2007               "          Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n"
2008               "    }\n  }\n}");
2009}
2010
2011TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) {
2012  FormatStyle NoBinPacking = getGoogleStyle();
2013  NoBinPacking.BinPackParameters = false;
2014  verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n"
2015               "  aaaaaaaaaaaaaaaaaaaa,\n"
2016               "  aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);",
2017               NoBinPacking);
2018  verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n"
2019               "        aaaaaaaaaaaaa,\n"
2020               "        aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));",
2021               NoBinPacking);
2022  verifyFormat(
2023      "aaaaaaaa(aaaaaaaaaaaaa,\n"
2024      "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2025      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
2026      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2027      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));",
2028      NoBinPacking);
2029  verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
2030               "    .aaaaaaaaaaaaaaaaaa();",
2031               NoBinPacking);
2032  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2033               "    aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);",
2034               NoBinPacking);
2035
2036  verifyFormat(
2037      "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2038      "             aaaaaaaaaaaa,\n"
2039      "             aaaaaaaaaaaa);",
2040      NoBinPacking);
2041  verifyFormat(
2042      "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n"
2043      "                               ddddddddddddddddddddddddddddd),\n"
2044      "             test);",
2045      NoBinPacking);
2046
2047  verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n"
2048               "            aaaaaaaaaaaaaaaaaaaaaaa,\n"
2049               "            aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;",
2050               NoBinPacking);
2051  verifyFormat("a(\"a\"\n"
2052               "  \"a\",\n"
2053               "  a);");
2054
2055  NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
2056  verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n"
2057               "                aaaaaaaaa,\n"
2058               "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
2059               NoBinPacking);
2060  verifyFormat(
2061      "void f() {\n"
2062      "  aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
2063      "      .aaaaaaa();\n"
2064      "}",
2065      NoBinPacking);
2066}
2067
2068TEST_F(FormatTest, FormatsBuilderPattern) {
2069  verifyFormat(
2070      "return llvm::StringSwitch<Reference::Kind>(name)\n"
2071      "    .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n"
2072      "    .StartsWith(\".eh_frame\", ORDER_EH_FRAME).StartsWith(\".init\", ORDER_INIT)\n"
2073      "    .StartsWith(\".fini\", ORDER_FINI).StartsWith(\".hash\", ORDER_HASH)\n"
2074      "    .Default(ORDER_TEXT);\n");
2075
2076  verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n"
2077               "       aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();");
2078  verifyFormat(
2079      "aaaaaaa->aaaaaaa\n"
2080      "    ->aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2081      "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
2082  verifyFormat(
2083      "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n"
2084      "    aaaaaaaaaaaaaa);");
2085  verifyFormat(
2086      "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa = aaaaaa->aaaaaaaaaaaa()\n"
2087      "    ->aaaaaaaaaaaaaaaa(\n"
2088      "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2089      "    ->aaaaaaaaaaaaaaaaa();");
2090}
2091
2092TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {
2093  verifyFormat(
2094      "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2095      "    bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}");
2096  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
2097               "    ccccccccccccccccccccccccc) {\n}");
2098  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
2099               "    ccccccccccccccccccccccccc) {\n}");
2100  verifyFormat(
2101      "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n"
2102      "    ccccccccccccccccccccccccc) {\n}");
2103  verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n"
2104               "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n"
2105               "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n"
2106               "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
2107  verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n"
2108               "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n"
2109               "    aaaaaaaaaaaaaaa != aa) {\n}");
2110}
2111
2112TEST_F(FormatTest, BreaksAfterAssignments) {
2113  verifyFormat(
2114      "unsigned Cost =\n"
2115      "    TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n"
2116      "                        SI->getPointerAddressSpaceee());\n");
2117  verifyFormat(
2118      "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n"
2119      "    Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());");
2120
2121  verifyFormat(
2122      "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa()\n"
2123      "    .aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);");
2124}
2125
2126TEST_F(FormatTest, AlignsAfterAssignments) {
2127  verifyFormat(
2128      "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2129      "             aaaaaaaaaaaaaaaaaaaaaaaaa;");
2130  verifyFormat(
2131      "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2132      "          aaaaaaaaaaaaaaaaaaaaaaaaa;");
2133  verifyFormat(
2134      "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2135      "           aaaaaaaaaaaaaaaaaaaaaaaaa;");
2136  verifyFormat(
2137      "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2138      "              aaaaaaaaaaaaaaaaaaaaaaaaa);");
2139  verifyFormat("double LooooooooooooooooooooooooongResult =\n"
2140               "    aaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaa +\n"
2141               "    aaaaaaaaaaaaaaaaaaaaaaaa;");
2142}
2143
2144TEST_F(FormatTest, AlignsAfterReturn) {
2145  verifyFormat(
2146      "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2147      "       aaaaaaaaaaaaaaaaaaaaaaaaa;");
2148  verifyFormat(
2149      "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
2150      "        aaaaaaaaaaaaaaaaaaaaaaaaa);");
2151  verifyFormat(
2152      "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
2153      "       aaaaaaaaaaaaaaaaaaaaaa();");
2154  verifyFormat(
2155      "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n"
2156      "        aaaaaaaaaaaaaaaaaaaaaa());");
2157  verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2158               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2159  verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2160               "           aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n"
2161               "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2162}
2163
2164TEST_F(FormatTest, BreaksConditionalExpressions) {
2165  verifyFormat(
2166      "aaaa(aaaaaaaaaaaaaaaaaaaa,\n"
2167      "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2168      "                                : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2169  verifyFormat(
2170      "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2171      "                                   : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2172  verifyFormat(
2173      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n"
2174      "                                                    : aaaaaaaaaaaaa);");
2175  verifyFormat(
2176      "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2177      "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2178      "                                    : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2179      "                   aaaaaaaaaaaaa);");
2180  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2181               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2182               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2183               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2184               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2185  verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2186               "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2187               "           ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2188               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2189               "           : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2190               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
2191               "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2192
2193  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2194               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2195               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2196  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n"
2197               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2198               "        ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2199               "        : aaaaaaaaaaaaaaaa;");
2200  verifyFormat(
2201      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2202      "    ? aaaaaaaaaaaaaaa\n"
2203      "    : aaaaaaaaaaaaaaa;");
2204  verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
2205               "          aaaaaaaaa\n"
2206               "      ? b\n"
2207               "      : c);");
2208  verifyFormat(
2209      "unsigned Indent =\n"
2210      "    format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n"
2211      "                              ? IndentForLevel[TheLine.Level]\n"
2212      "                              : TheLine * 2,\n"
2213      "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
2214      getLLVMStyleWithColumns(70));
2215
2216  FormatStyle NoBinPacking = getLLVMStyle();
2217  NoBinPacking.BinPackParameters = false;
2218  verifyFormat(
2219      "void f() {\n"
2220      "  g(aaa,\n"
2221      "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
2222      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2223      "        ? aaaaaaaaaaaaaaa\n"
2224      "        : aaaaaaaaaaaaaaa);\n"
2225      "}",
2226      NoBinPacking);
2227}
2228
2229TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
2230  verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n"
2231               "     aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();");
2232  verifyFormat("bool a = true, b = false;");
2233
2234  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2235               "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n"
2236               "     bbbbbbbbbbbbbbbbbbbbbbbbb =\n"
2237               "         bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);");
2238  verifyFormat(
2239      "bool aaaaaaaaaaaaaaaaaaaaa =\n"
2240      "         bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n"
2241      "     d = e && f;");
2242  verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n"
2243               "          c = cccccccccccccccccccc, d = dddddddddddddddddddd;");
2244  verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
2245               "          *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;");
2246  verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n"
2247               "          ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;");
2248  // FIXME: If multiple variables are defined, the "*" needs to move to the new
2249  // line. Also fix indent for breaking after the type, this looks bad.
2250  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n"
2251               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n"
2252               "   *b = bbbbbbbbbbbbbbbbbbb;");
2253
2254  // Not ideal, but pointer-with-type does not allow much here.
2255  verifyGoogleFormat(
2256      "aaaaaaaaa* a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n"
2257      "           *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;");
2258}
2259
2260TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
2261  verifyFormat("arr[foo ? bar : baz];");
2262  verifyFormat("f()[foo ? bar : baz];");
2263  verifyFormat("(a + b)[foo ? bar : baz];");
2264  verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
2265}
2266
2267TEST_F(FormatTest, AlignsStringLiterals) {
2268  verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
2269               "                                      \"short literal\");");
2270  verifyFormat(
2271      "looooooooooooooooooooooooongFunction(\n"
2272      "    \"short literal\"\n"
2273      "    \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
2274  verifyFormat("someFunction(\"Always break between multi-line\"\n"
2275               "             \" string literals\",\n"
2276               "             and, other, parameters);");
2277  EXPECT_EQ("fun + \"1243\" /* comment */\n"
2278            "      \"5678\";",
2279            format("fun + \"1243\" /* comment */\n"
2280                   "      \"5678\";",
2281                   getLLVMStyleWithColumns(28)));
2282  EXPECT_EQ(
2283      "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
2284      "         \"aaaaaaaaaaaaaaaaaaaaa\"\n"
2285      "         \"aaaaaaaaaaaaaaaa\";",
2286      format("aaaaaa ="
2287             "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa "
2288             "aaaaaaaaaaaaaaaaaaaaa\" "
2289             "\"aaaaaaaaaaaaaaaa\";"));
2290  verifyFormat("a = a + \"a\"\n"
2291               "        \"a\"\n"
2292               "        \"a\";");
2293  verifyFormat("f(\"a\", \"b\"\n"
2294               "       \"c\");");
2295
2296  verifyFormat(
2297      "#define LL_FORMAT \"ll\"\n"
2298      "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n"
2299      "       \"d, ddddddddd: %\" LL_FORMAT \"d\");");
2300
2301  verifyFormat("#define A(X)          \\\n"
2302               "  \"aaaaa\" #X \"bbbbbb\" \\\n"
2303               "  \"ccccc\"",
2304               getLLVMStyleWithColumns(23));
2305  verifyFormat("#define A \"def\"\n"
2306               "f(\"abc\" A \"ghi\"\n"
2307               "  \"jkl\");");
2308}
2309
2310TEST_F(FormatTest, AlignsPipes) {
2311  verifyFormat(
2312      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2313      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2314      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2315  verifyFormat(
2316      "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
2317      "                     << aaaaaaaaaaaaaaaaaaaa;");
2318  verifyFormat(
2319      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2320      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2321  verifyFormat(
2322      "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
2323      "                \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
2324      "             << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
2325  verifyFormat(
2326      "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2327      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2328      "         << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2329
2330  verifyFormat("return out << \"somepacket = {\\n\"\n"
2331               "           << \"  aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n"
2332               "           << \"  bbbb = \" << pkt.bbbb << \"\\n\"\n"
2333               "           << \"  cccccc = \" << pkt.cccccc << \"\\n\"\n"
2334               "           << \"  ddd = [\" << pkt.ddd << \"]\\n\"\n"
2335               "           << \"}\";");
2336
2337  verifyFormat(
2338      "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n"
2339      "             << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n"
2340      "             << \"ccccccccccccccccc = \" << ccccccccccccccccc\n"
2341      "             << \"ddddddddddddddddd = \" << ddddddddddddddddd\n"
2342      "             << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;");
2343  verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n"
2344               "             << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
2345
2346  verifyFormat(
2347      "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2348      "                    .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2349}
2350
2351TEST_F(FormatTest, UnderstandsEquals) {
2352  verifyFormat(
2353      "aaaaaaaaaaaaaaaaa =\n"
2354      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2355  verifyFormat(
2356      "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2357      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
2358  verifyFormat(
2359      "if (a) {\n"
2360      "  f();\n"
2361      "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2362      "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
2363      "}");
2364
2365  verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
2366               "        100000000 + 10000000) {\n}");
2367}
2368
2369TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
2370  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
2371               "    .looooooooooooooooooooooooooooooooooooooongFunction();");
2372
2373  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
2374               "    ->looooooooooooooooooooooooooooooooooooooongFunction();");
2375
2376  verifyFormat(
2377      "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
2378      "                                                          Parameter2);");
2379
2380  verifyFormat(
2381      "ShortObject->shortFunction(\n"
2382      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
2383      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
2384
2385  verifyFormat("loooooooooooooongFunction(\n"
2386               "    LoooooooooooooongObject->looooooooooooooooongFunction());");
2387
2388  verifyFormat(
2389      "function(LoooooooooooooooooooooooooooooooooooongObject\n"
2390      "             ->loooooooooooooooooooooooooooooooooooooooongFunction());");
2391
2392  verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
2393               "    .WillRepeatedly(Return(SomeValue));");
2394  verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)]\n"
2395               "    .insert(ccccccccccccccccccccccc);");
2396  verifyFormat(
2397      "aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2398      "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
2399      "    .aaaaaaaaaaaaaaa(\n"
2400      "         aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2401      "            aaaaaaaaaaaaaaaaaaaaaaaaaaa));");
2402  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2403               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2404               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2405               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n"
2406               "}");
2407
2408  // Here, it is not necessary to wrap at "." or "->".
2409  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
2410               "    aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
2411  verifyFormat(
2412      "aaaaaaaaaaa->aaaaaaaaa(\n"
2413      "    aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2414      "    aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n");
2415
2416  verifyFormat(
2417      "aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2418      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());");
2419  verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n"
2420               "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
2421  verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n"
2422               "                         aaaaaaaaa()->aaaaaa()->aaaaa());");
2423
2424  // FIXME: Should we break before .a()?
2425  verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2426               "      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa).a();");
2427
2428  FormatStyle NoBinPacking = getLLVMStyle();
2429  NoBinPacking.BinPackParameters = false;
2430  verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
2431               "    .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
2432               "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n"
2433               "                         aaaaaaaaaaaaaaaaaaa,\n"
2434               "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
2435               NoBinPacking);
2436}
2437
2438TEST_F(FormatTest, WrapsTemplateDeclarations) {
2439  verifyFormat("template <typename T>\n"
2440               "virtual void loooooooooooongFunction(int Param1, int Param2);");
2441  verifyFormat(
2442      "template <typename T>\n"
2443      "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;");
2444  verifyFormat("template <typename T>\n"
2445               "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n"
2446               "       int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);");
2447  verifyFormat(
2448      "template <typename T>\n"
2449      "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n"
2450      "                                      int Paaaaaaaaaaaaaaaaaaaaram2);");
2451  verifyFormat(
2452      "template <typename T>\n"
2453      "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n"
2454      "                    aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n"
2455      "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2456  verifyFormat("template <typename T>\n"
2457               "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2458               "    int aaaaaaaaaaaaaaaaaaaaaa);");
2459  verifyFormat(
2460      "template <typename T1, typename T2 = char, typename T3 = char,\n"
2461      "          typename T4 = char>\n"
2462      "void f();");
2463  verifyFormat(
2464      "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
2465      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2466
2467  verifyFormat("a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n"
2468               "    a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));");
2469}
2470
2471TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
2472  verifyFormat(
2473      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2474      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2475  verifyFormat(
2476      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2477      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2478      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
2479
2480  // FIXME: Should we have the extra indent after the second break?
2481  verifyFormat(
2482      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2483      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2484      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2485
2486  // FIXME: Look into whether we should indent 4 from the start or 4 from
2487  // "bbbbb..." here instead of what we are doing now.
2488  verifyFormat(
2489      "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n"
2490      "                    cccccccccccccccccccccccccccccccccccccccccccccc());");
2491
2492  // Breaking at nested name specifiers is generally not desirable.
2493  verifyFormat(
2494      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2495      "    aaaaaaaaaaaaaaaaaaaaaaa);");
2496
2497  verifyFormat(
2498      "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2499      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2500      "                   aaaaaaaaaaaaaaaaaaaaa);",
2501      getLLVMStyleWithColumns(74));
2502
2503  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
2504               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
2505               "        .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
2506}
2507
2508TEST_F(FormatTest, UnderstandsTemplateParameters) {
2509  verifyFormat("A<int> a;");
2510  verifyFormat("A<A<A<int> > > a;");
2511  verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
2512  verifyFormat("bool x = a < 1 || 2 > a;");
2513  verifyFormat("bool x = 5 < f<int>();");
2514  verifyFormat("bool x = f<int>() > 5;");
2515  verifyFormat("bool x = 5 < a<int>::x;");
2516  verifyFormat("bool x = a < 4 ? a > 2 : false;");
2517  verifyFormat("bool x = f() ? a < 2 : a > 2;");
2518
2519  verifyGoogleFormat("A<A<int>> a;");
2520  verifyGoogleFormat("A<A<A<int>>> a;");
2521  verifyGoogleFormat("A<A<A<A<int>>>> a;");
2522  verifyGoogleFormat("A<A<int> > a;");
2523  verifyGoogleFormat("A<A<A<int> > > a;");
2524  verifyGoogleFormat("A<A<A<A<int> > > > a;");
2525  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle()));
2526  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle()));
2527
2528  verifyFormat("test >> a >> b;");
2529  verifyFormat("test << a >> b;");
2530
2531  verifyFormat("f<int>();");
2532  verifyFormat("template <typename T> void f() {}");
2533}
2534
2535TEST_F(FormatTest, UnderstandsBinaryOperators) {
2536  verifyFormat("COMPARE(a, ==, b);");
2537}
2538
2539TEST_F(FormatTest, UnderstandsPointersToMembers) {
2540  verifyFormat("int A::*x;");
2541  verifyFormat("int (S::*func)(void *);");
2542  verifyFormat("typedef bool *(Class::*Member)() const;");
2543  verifyFormat("void f() {\n"
2544               "  (a->*f)();\n"
2545               "  a->*x;\n"
2546               "  (a.*f)();\n"
2547               "  ((*a).*f)();\n"
2548               "  a.*x;\n"
2549               "}");
2550  FormatStyle Style = getLLVMStyle();
2551  Style.PointerBindsToType = true;
2552  verifyFormat("typedef bool* (Class::*Member)() const;", Style);
2553}
2554
2555TEST_F(FormatTest, UnderstandsUnaryOperators) {
2556  verifyFormat("int a = -2;");
2557  verifyFormat("f(-1, -2, -3);");
2558  verifyFormat("a[-1] = 5;");
2559  verifyFormat("int a = 5 + -2;");
2560  verifyFormat("if (i == -1) {\n}");
2561  verifyFormat("if (i != -1) {\n}");
2562  verifyFormat("if (i > -1) {\n}");
2563  verifyFormat("if (i < -1) {\n}");
2564  verifyFormat("++(a->f());");
2565  verifyFormat("--(a->f());");
2566  verifyFormat("(a->f())++;");
2567  verifyFormat("a[42]++;");
2568  verifyFormat("if (!(a->f())) {\n}");
2569
2570  verifyFormat("a-- > b;");
2571  verifyFormat("b ? -a : c;");
2572  verifyFormat("n * sizeof char16;");
2573  verifyFormat("n * alignof char16;");
2574  verifyFormat("sizeof(char);");
2575  verifyFormat("alignof(char);");
2576
2577  verifyFormat("return -1;");
2578  verifyFormat("switch (a) {\n"
2579               "case -1:\n"
2580               "  break;\n"
2581               "}");
2582  verifyFormat("#define X -1");
2583  verifyFormat("#define X -kConstant");
2584
2585  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { -5, +3 };");
2586  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { +5, -3 };");
2587
2588  verifyFormat("int a = /* confusing comment */ -1;");
2589  // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case.
2590  verifyFormat("int a = i /* confusing comment */++;");
2591}
2592
2593TEST_F(FormatTest, UndestandsOverloadedOperators) {
2594  verifyFormat("bool operator<();");
2595  verifyFormat("bool operator>();");
2596  verifyFormat("bool operator=();");
2597  verifyFormat("bool operator==();");
2598  verifyFormat("bool operator!=();");
2599  verifyFormat("int operator+();");
2600  verifyFormat("int operator++();");
2601  verifyFormat("bool operator();");
2602  verifyFormat("bool operator()();");
2603  verifyFormat("bool operator[]();");
2604  verifyFormat("operator bool();");
2605  verifyFormat("operator int();");
2606  verifyFormat("operator void *();");
2607  verifyFormat("operator SomeType<int>();");
2608  verifyFormat("operator SomeType<int, int>();");
2609  verifyFormat("operator SomeType<SomeType<int> >();");
2610  verifyFormat("void *operator new(std::size_t size);");
2611  verifyFormat("void *operator new[](std::size_t size);");
2612  verifyFormat("void operator delete(void *ptr);");
2613  verifyFormat("void operator delete[](void *ptr);");
2614  verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n"
2615               "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);");
2616
2617  verifyFormat(
2618      "ostream &operator<<(ostream &OutputStream,\n"
2619      "                    SomeReallyLongType WithSomeReallyLongValue);");
2620  verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n"
2621               "               const aaaaaaaaaaaaaaaaaaaaa &right) {\n"
2622               "  return left.group < right.group;\n"
2623               "}");
2624  verifyFormat("SomeType &operator=(const SomeType &S);");
2625
2626  verifyGoogleFormat("operator void*();");
2627  verifyGoogleFormat("operator SomeType<SomeType<int>>();");
2628}
2629
2630TEST_F(FormatTest, UnderstandsNewAndDelete) {
2631  verifyFormat("void f() {\n"
2632               "  A *a = new A;\n"
2633               "  A *a = new (placement) A;\n"
2634               "  delete a;\n"
2635               "  delete (A *)a;\n"
2636               "}");
2637}
2638
2639TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
2640  verifyFormat("int *f(int *a) {}");
2641  verifyFormat("int main(int argc, char **argv) {}");
2642  verifyFormat("Test::Test(int b) : a(b * b) {}");
2643  verifyIndependentOfContext("f(a, *a);");
2644  verifyFormat("void g() { f(*a); }");
2645  verifyIndependentOfContext("int a = b * 10;");
2646  verifyIndependentOfContext("int a = 10 * b;");
2647  verifyIndependentOfContext("int a = b * c;");
2648  verifyIndependentOfContext("int a += b * c;");
2649  verifyIndependentOfContext("int a -= b * c;");
2650  verifyIndependentOfContext("int a *= b * c;");
2651  verifyIndependentOfContext("int a /= b * c;");
2652  verifyIndependentOfContext("int a = *b;");
2653  verifyIndependentOfContext("int a = *b * c;");
2654  verifyIndependentOfContext("int a = b * *c;");
2655  verifyIndependentOfContext("return 10 * b;");
2656  verifyIndependentOfContext("return *b * *c;");
2657  verifyIndependentOfContext("return a & ~b;");
2658  verifyIndependentOfContext("f(b ? *c : *d);");
2659  verifyIndependentOfContext("int a = b ? *c : *d;");
2660  verifyIndependentOfContext("*b = a;");
2661  verifyIndependentOfContext("a * ~b;");
2662  verifyIndependentOfContext("a * !b;");
2663  verifyIndependentOfContext("a * +b;");
2664  verifyIndependentOfContext("a * -b;");
2665  verifyIndependentOfContext("a * ++b;");
2666  verifyIndependentOfContext("a * --b;");
2667  verifyIndependentOfContext("a[4] * b;");
2668  verifyIndependentOfContext("a[a * a] = 1;");
2669  verifyIndependentOfContext("f() * b;");
2670  verifyIndependentOfContext("a * [self dostuff];");
2671  verifyIndependentOfContext("int x = a * (a + b);");
2672  verifyIndependentOfContext("(a *)(a + b);");
2673  verifyIndependentOfContext("int *pa = (int *)&a;");
2674  verifyIndependentOfContext("return sizeof(int **);");
2675  verifyIndependentOfContext("return sizeof(int ******);");
2676  verifyIndependentOfContext("return (int **&)a;");
2677  verifyFormat("void f(Type (*parameter)[10]) {}");
2678  verifyGoogleFormat("return sizeof(int**);");
2679  verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
2680  verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
2681  // FIXME: The newline is wrong.
2682  verifyFormat("auto a = [](int **&, int ***) {}\n;");
2683
2684  verifyIndependentOfContext("InvalidRegions[*R] = 0;");
2685
2686  verifyIndependentOfContext("A<int *> a;");
2687  verifyIndependentOfContext("A<int **> a;");
2688  verifyIndependentOfContext("A<int *, int *> a;");
2689  verifyIndependentOfContext(
2690      "const char *const p = reinterpret_cast<const char *const>(q);");
2691  verifyIndependentOfContext("A<int **, int **> a;");
2692  verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);");
2693  verifyFormat("for (char **a = b; *a; ++a) {\n}");
2694  verifyFormat("for (; a && b;) {\n}");
2695
2696  verifyFormat(
2697      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
2698      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
2699
2700  verifyGoogleFormat("int main(int argc, char** argv) {}");
2701  verifyGoogleFormat("A<int*> a;");
2702  verifyGoogleFormat("A<int**> a;");
2703  verifyGoogleFormat("A<int*, int*> a;");
2704  verifyGoogleFormat("A<int**, int**> a;");
2705  verifyGoogleFormat("f(b ? *c : *d);");
2706  verifyGoogleFormat("int a = b ? *c : *d;");
2707  verifyGoogleFormat("Type* t = **x;");
2708  verifyGoogleFormat("Type* t = *++*x;");
2709  verifyGoogleFormat("*++*x;");
2710  verifyGoogleFormat("Type* t = const_cast<T*>(&*x);");
2711  verifyGoogleFormat("Type* t = x++ * y;");
2712  verifyGoogleFormat(
2713      "const char* const p = reinterpret_cast<const char* const>(q);");
2714
2715  verifyIndependentOfContext("a = *(x + y);");
2716  verifyIndependentOfContext("a = &(x + y);");
2717  verifyIndependentOfContext("*(x + y).call();");
2718  verifyIndependentOfContext("&(x + y)->call();");
2719  verifyFormat("void f() { &(*I).first; }");
2720
2721  verifyIndependentOfContext("f(b * /* confusing comment */ ++c);");
2722  verifyFormat(
2723      "int *MyValues = {\n"
2724      "  *A, // Operator detection might be confused by the '{'\n"
2725      "  *BB // Operator detection might be confused by previous comment\n"
2726      "};");
2727
2728  verifyIndependentOfContext("if (int *a = &b)");
2729  verifyIndependentOfContext("if (int &a = *b)");
2730  verifyIndependentOfContext("if (a & b[i])");
2731  verifyIndependentOfContext("if (a::b::c::d & b[i])");
2732  verifyIndependentOfContext("if (*b[i])");
2733  verifyIndependentOfContext("if (int *a = (&b))");
2734  verifyIndependentOfContext("while (int *a = &b)");
2735  verifyFormat("void f() {\n"
2736               "  for (const int &v : Values) {\n"
2737               "  }\n"
2738               "}");
2739  verifyFormat("for (int i = a * a; i < 10; ++i) {\n}");
2740  verifyFormat("for (int i = 0; i < a * a; ++i) {\n}");
2741
2742  verifyFormat("#define MACRO     \\\n"
2743               "  int *i = a * b; \\\n"
2744               "  void f(a *b);",
2745               getLLVMStyleWithColumns(19));
2746
2747  verifyIndependentOfContext("A = new SomeType *[Length];");
2748  verifyIndependentOfContext("A = new SomeType *[Length]();");
2749  verifyGoogleFormat("A = new SomeType* [Length]();");
2750  verifyGoogleFormat("A = new SomeType* [Length];");
2751
2752  FormatStyle PointerLeft = getLLVMStyle();
2753  PointerLeft.PointerBindsToType = true;
2754  verifyFormat("delete *x;", PointerLeft);
2755}
2756
2757TEST_F(FormatTest, UnderstandsEllipsis) {
2758  verifyFormat("int printf(const char *fmt, ...);");
2759  verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }");
2760}
2761
2762TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) {
2763  EXPECT_EQ("int *a;\n"
2764            "int *a;\n"
2765            "int *a;",
2766            format("int *a;\n"
2767                   "int* a;\n"
2768                   "int *a;",
2769                   getGoogleStyle()));
2770  EXPECT_EQ("int* a;\n"
2771            "int* a;\n"
2772            "int* a;",
2773            format("int* a;\n"
2774                   "int* a;\n"
2775                   "int *a;",
2776                   getGoogleStyle()));
2777  EXPECT_EQ("int *a;\n"
2778            "int *a;\n"
2779            "int *a;",
2780            format("int *a;\n"
2781                   "int * a;\n"
2782                   "int *  a;",
2783                   getGoogleStyle()));
2784}
2785
2786TEST_F(FormatTest, UnderstandsRvalueReferences) {
2787  verifyFormat("int f(int &&a) {}");
2788  verifyFormat("int f(int a, char &&b) {}");
2789  verifyFormat("void f() { int &&a = b; }");
2790  verifyGoogleFormat("int f(int a, char&& b) {}");
2791  verifyGoogleFormat("void f() { int&& a = b; }");
2792
2793  // FIXME: These require somewhat deeper changes in template arguments
2794  // formatting.
2795  //  verifyIndependentOfContext("A<int &&> a;");
2796  //  verifyIndependentOfContext("A<int &&, int &&> a;");
2797  //  verifyGoogleFormat("A<int&&> a;");
2798  //  verifyGoogleFormat("A<int&&, int&&> a;");
2799}
2800
2801TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) {
2802  verifyFormat("void f() {\n"
2803               "  x[aaaaaaaaa -\n"
2804               "    b] = 23;\n"
2805               "}",
2806               getLLVMStyleWithColumns(15));
2807}
2808
2809TEST_F(FormatTest, FormatsCasts) {
2810  verifyFormat("Type *A = static_cast<Type *>(P);");
2811  verifyFormat("Type *A = (Type *)P;");
2812  verifyFormat("Type *A = (vector<Type *, int *>)P;");
2813  verifyFormat("int a = (int)(2.0f);");
2814
2815  // FIXME: These also need to be identified.
2816  verifyFormat("int a = (int) 2.0f;");
2817  verifyFormat("int a = (int) * b;");
2818
2819  // These are not casts.
2820  verifyFormat("void f(int *) {}");
2821  verifyFormat("f(foo)->b;");
2822  verifyFormat("f(foo).b;");
2823  verifyFormat("f(foo)(b);");
2824  verifyFormat("f(foo)[b];");
2825  verifyFormat("[](foo) { return 4; }(bar)];");
2826  verifyFormat("(*funptr)(foo)[4];");
2827  verifyFormat("funptrs[4](foo)[4];");
2828  verifyFormat("void f(int *);");
2829  verifyFormat("void f(int *) = 0;");
2830  verifyFormat("void f(SmallVector<int>) {}");
2831  verifyFormat("void f(SmallVector<int>);");
2832  verifyFormat("void f(SmallVector<int>) = 0;");
2833  verifyFormat("void f(int i = (kValue) * kMask) {}");
2834  verifyFormat("void f(int i = (kA * kB) & kMask) {}");
2835  verifyFormat("int a = sizeof(int) * b;");
2836  verifyFormat("int a = alignof(int) * b;");
2837
2838  // These are not casts, but at some point were confused with casts.
2839  verifyFormat("virtual void foo(int *) override;");
2840  verifyFormat("virtual void foo(char &) const;");
2841  verifyFormat("virtual void foo(int *a, char *) const;");
2842  verifyFormat("int a = sizeof(int *) + b;");
2843  verifyFormat("int a = alignof(int *) + b;");
2844}
2845
2846TEST_F(FormatTest, FormatsFunctionTypes) {
2847  verifyFormat("A<bool()> a;");
2848  verifyFormat("A<SomeType()> a;");
2849  verifyFormat("A<void(*)(int, std::string)> a;");
2850  verifyFormat("A<void *(int)>;");
2851  verifyFormat("void *(*a)(int *, SomeType *);");
2852
2853  // FIXME: Inconsistent.
2854  verifyFormat("int (*func)(void *);");
2855  verifyFormat("void f() { int(*func)(void *); }");
2856
2857  verifyGoogleFormat("A<void*(int*, SomeType*)>;");
2858  verifyGoogleFormat("void* (*a)(int);");
2859
2860  // Other constructs can look somewhat like function types:
2861  verifyFormat("A<sizeof(*x)> a;");
2862  verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)");
2863}
2864
2865TEST_F(FormatTest, BreaksLongDeclarations) {
2866  verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n"
2867               "    AnotherNameForTheLongType;");
2868  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n"
2869               "    LoooooooooooooooooooooooooooooooooooooooongVariable;");
2870  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
2871               "    LoooooooooooooooooooooooooooooooongFunctionDeclaration();");
2872  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n"
2873               "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}");
2874
2875  // FIXME: Without the comment, this breaks after "(".
2876  verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType // break\n"
2877               "    (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();");
2878
2879  verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n"
2880               "                  int LoooooooooooooooooooongParam2) {}");
2881  verifyFormat(
2882      "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n"
2883      "                                   SourceLocation L, IdentifierIn *II,\n"
2884      "                                   Type *T) {}");
2885  verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n"
2886               "ReallyReallyLongFunctionName(\n"
2887               "    const std::string &SomeParameter,\n"
2888               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
2889               "        ReallyReallyLongParameterName,\n"
2890               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
2891               "        AnotherLongParameterName) {}");
2892  verifyFormat("template <typename A>\n"
2893               "SomeLoooooooooooooooooooooongType<\n"
2894               "    typename some_namespace::SomeOtherType<A>::Type>\n"
2895               "Function() {}");
2896  verifyFormat(
2897      "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n"
2898      "    aaaaaaaaaaaaaaaaaaaaaaa;");
2899
2900  verifyGoogleFormat(
2901      "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n"
2902      "                                   SourceLocation L) {}");
2903  verifyGoogleFormat(
2904      "some_namespace::LongReturnType\n"
2905      "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n"
2906      "    int first_long_parameter, int second_parameter) {}");
2907
2908  verifyGoogleFormat("template <typename T>\n"
2909                     "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n"
2910                     "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}");
2911  verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2912                     "                   int aaaaaaaaaaaaaaaaaaaaaaa);");
2913}
2914
2915TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
2916  verifyFormat("(a)->b();");
2917  verifyFormat("--a;");
2918}
2919
2920TEST_F(FormatTest, HandlesIncludeDirectives) {
2921  verifyFormat("#include <string>\n"
2922               "#include <a/b/c.h>\n"
2923               "#include \"a/b/string\"\n"
2924               "#include \"string.h\"\n"
2925               "#include \"string.h\"\n"
2926               "#include <a-a>\n"
2927               "#include < path with space >\n"
2928               "#include \"abc.h\" // this is included for ABC\n"
2929               "#include \"some long include\" // with a comment\n"
2930               "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"",
2931               getLLVMStyleWithColumns(35));
2932
2933  verifyFormat("#import <string>");
2934  verifyFormat("#import <a/b/c.h>");
2935  verifyFormat("#import \"a/b/string\"");
2936  verifyFormat("#import \"string.h\"");
2937  verifyFormat("#import \"string.h\"");
2938}
2939
2940//===----------------------------------------------------------------------===//
2941// Error recovery tests.
2942//===----------------------------------------------------------------------===//
2943
2944TEST_F(FormatTest, IncompleteParameterLists) {
2945  FormatStyle NoBinPacking = getLLVMStyle();
2946  NoBinPacking.BinPackParameters = false;
2947  verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
2948               "                        double *min_x,\n"
2949               "                        double *max_x,\n"
2950               "                        double *min_y,\n"
2951               "                        double *max_y,\n"
2952               "                        double *min_z,\n"
2953               "                        double *max_z, ) {}",
2954               NoBinPacking);
2955}
2956
2957TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
2958  verifyFormat("void f() { return; }\n42");
2959  verifyFormat("void f() {\n"
2960               "  if (0)\n"
2961               "    return;\n"
2962               "}\n"
2963               "42");
2964  verifyFormat("void f() { return }\n42");
2965  verifyFormat("void f() {\n"
2966               "  if (0)\n"
2967               "    return\n"
2968               "}\n"
2969               "42");
2970}
2971
2972TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
2973  EXPECT_EQ("void f() { return }", format("void  f ( )  {  return  }"));
2974  EXPECT_EQ("void f() {\n"
2975            "  if (a)\n"
2976            "    return\n"
2977            "}",
2978            format("void  f  (  )  {  if  ( a )  return  }"));
2979  EXPECT_EQ("namespace N {\n"
2980            "void f()\n"
2981            "}",
2982            format("namespace  N  {  void f()  }"));
2983  EXPECT_EQ("namespace N {\n"
2984            "void f() {}\n"
2985            "void g()\n"
2986            "}",
2987            format("namespace N  { void f( ) { } void g( ) }"));
2988}
2989
2990TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
2991  verifyFormat("int aaaaaaaa =\n"
2992               "    // Overlylongcomment\n"
2993               "    b;",
2994               getLLVMStyleWithColumns(20));
2995  verifyFormat("function(\n"
2996               "    ShortArgument,\n"
2997               "    LoooooooooooongArgument);\n",
2998               getLLVMStyleWithColumns(20));
2999}
3000
3001TEST_F(FormatTest, IncorrectAccessSpecifier) {
3002  verifyFormat("public:");
3003  verifyFormat("class A {\n"
3004               "public\n"
3005               "  void f() {}\n"
3006               "};");
3007  verifyFormat("public\n"
3008               "int qwerty;");
3009  verifyFormat("public\n"
3010               "B {}");
3011  verifyFormat("public\n"
3012               "{}");
3013  verifyFormat("public\n"
3014               "B { int x; }");
3015}
3016
3017TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) {
3018  verifyFormat("{");
3019  verifyFormat("#})");
3020}
3021
3022TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
3023  verifyFormat("do {\n}");
3024  verifyFormat("do {\n}\n"
3025               "f();");
3026  verifyFormat("do {\n}\n"
3027               "wheeee(fun);");
3028  verifyFormat("do {\n"
3029               "  f();\n"
3030               "}");
3031}
3032
3033TEST_F(FormatTest, IncorrectCodeMissingParens) {
3034  verifyFormat("if {\n  foo;\n  foo();\n}");
3035  verifyFormat("switch {\n  foo;\n  foo();\n}");
3036  verifyFormat("for {\n  foo;\n  foo();\n}");
3037  verifyFormat("while {\n  foo;\n  foo();\n}");
3038  verifyFormat("do {\n  foo;\n  foo();\n} while;");
3039}
3040
3041TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
3042  verifyFormat("namespace {\n"
3043               "class Foo {  Foo  ( }; }  // comment");
3044}
3045
3046TEST_F(FormatTest, IncorrectCodeErrorDetection) {
3047  EXPECT_EQ("{\n{}\n", format("{\n{\n}\n"));
3048  EXPECT_EQ("{\n  {}\n", format("{\n  {\n}\n"));
3049  EXPECT_EQ("{\n  {}\n", format("{\n  {\n  }\n"));
3050  EXPECT_EQ("{\n  {}\n  }\n}\n", format("{\n  {\n    }\n  }\n}\n"));
3051
3052  EXPECT_EQ("{\n"
3053            "    {\n"
3054            " breakme(\n"
3055            "     qwe);\n"
3056            "}\n",
3057            format("{\n"
3058                   "    {\n"
3059                   " breakme(qwe);\n"
3060                   "}\n",
3061                   getLLVMStyleWithColumns(10)));
3062}
3063
3064TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
3065  verifyFormat("int x = {\n"
3066               "  avariable,\n"
3067               "  b(alongervariable)\n"
3068               "};",
3069               getLLVMStyleWithColumns(25));
3070}
3071
3072TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
3073  verifyFormat("return (a)(b) { 1, 2, 3 };");
3074}
3075
3076TEST_F(FormatTest, LayoutTokensFollowingBlockInParentheses) {
3077  // FIXME: This is bad, find a better and more generic solution.
3078  verifyFormat(
3079      "Aaa({\n"
3080      "  int i;\n"
3081      "},\n"
3082      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
3083      "                                     ccccccccccccccccc));");
3084}
3085
3086TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
3087  verifyFormat("void f() { return 42; }");
3088  verifyFormat("void f() {\n"
3089               "  // Comment\n"
3090               "}");
3091  verifyFormat("{\n"
3092               "#error {\n"
3093               "  int a;\n"
3094               "}");
3095  verifyFormat("{\n"
3096               "  int a;\n"
3097               "#error {\n"
3098               "}");
3099  verifyFormat("void f() {} // comment");
3100  verifyFormat("void f() { int a; } // comment");
3101  verifyFormat("void f() {\n"
3102               "} // comment",
3103               getLLVMStyleWithColumns(15));
3104
3105  verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
3106  verifyFormat("void f() {\n  return 42;\n}", getLLVMStyleWithColumns(22));
3107
3108  verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
3109  verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
3110}
3111
3112TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
3113  // Elaborate type variable declarations.
3114  verifyFormat("struct foo a = { bar };\nint n;");
3115  verifyFormat("class foo a = { bar };\nint n;");
3116  verifyFormat("union foo a = { bar };\nint n;");
3117
3118  // Elaborate types inside function definitions.
3119  verifyFormat("struct foo f() {}\nint n;");
3120  verifyFormat("class foo f() {}\nint n;");
3121  verifyFormat("union foo f() {}\nint n;");
3122
3123  // Templates.
3124  verifyFormat("template <class X> void f() {}\nint n;");
3125  verifyFormat("template <struct X> void f() {}\nint n;");
3126  verifyFormat("template <union X> void f() {}\nint n;");
3127
3128  // Actual definitions...
3129  verifyFormat("struct {\n} n;");
3130  verifyFormat(
3131      "template <template <class T, class Y>, class Z> class X {\n} n;");
3132  verifyFormat("union Z {\n  int n;\n} x;");
3133  verifyFormat("class MACRO Z {\n} n;");
3134  verifyFormat("class MACRO(X) Z {\n} n;");
3135  verifyFormat("class __attribute__(X) Z {\n} n;");
3136  verifyFormat("class __declspec(X) Z {\n} n;");
3137  verifyFormat("class A##B##C {\n} n;");
3138
3139  // Redefinition from nested context:
3140  verifyFormat("class A::B::C {\n} n;");
3141
3142  // Template definitions.
3143  verifyFormat(
3144      "template <typename F>\n"
3145      "Matcher(const Matcher<F> &Other,\n"
3146      "        typename enable_if_c<is_base_of<F, T>::value &&\n"
3147      "                             !is_same<F, T>::value>::type * = 0)\n"
3148      "    : Implementation(new ImplicitCastMatcher<F>(Other)) {}");
3149
3150  // FIXME: This is still incorrectly handled at the formatter side.
3151  verifyFormat("template <> struct X < 15, i < 3 && 42 < 50 && 33<28> {\n};");
3152
3153  // FIXME:
3154  // This now gets parsed incorrectly as class definition.
3155  // verifyFormat("class A<int> f() {\n}\nint n;");
3156
3157  // Elaborate types where incorrectly parsing the structural element would
3158  // break the indent.
3159  verifyFormat("if (true)\n"
3160               "  class X x;\n"
3161               "else\n"
3162               "  f();\n");
3163
3164  // This is simply incomplete. Formatting is not important, but must not crash.
3165  verifyFormat("class A:");
3166}
3167
3168TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
3169  verifyFormat("#error Leave     all         white!!!!! space* alone!\n");
3170  verifyFormat("#warning Leave     all         white!!!!! space* alone!\n");
3171  EXPECT_EQ("#error 1", format("  #  error   1"));
3172  EXPECT_EQ("#warning 1", format("  #  warning 1"));
3173}
3174
3175TEST_F(FormatTest, FormatHashIfExpressions) {
3176  // FIXME: Come up with a better indentation for #elif.
3177  verifyFormat(
3178      "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) &&  \\\n"
3179      "    defined(BBBBBBBB)\n"
3180      "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) &&  \\\n"
3181      "    defined(BBBBBBBB)\n"
3182      "#endif",
3183      getLLVMStyleWithColumns(65));
3184}
3185
3186TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
3187  FormatStyle AllowsMergedIf = getGoogleStyle();
3188  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
3189  verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
3190  verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
3191  verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
3192  EXPECT_EQ("if (true) return 42;",
3193            format("if (true)\nreturn 42;", AllowsMergedIf));
3194  FormatStyle ShortMergedIf = AllowsMergedIf;
3195  ShortMergedIf.ColumnLimit = 25;
3196  verifyFormat("#define A \\\n"
3197               "  if (true) return 42;",
3198               ShortMergedIf);
3199  verifyFormat("#define A \\\n"
3200               "  f();    \\\n"
3201               "  if (true)\n"
3202               "#define B",
3203               ShortMergedIf);
3204  verifyFormat("#define A \\\n"
3205               "  f();    \\\n"
3206               "  if (true)\n"
3207               "g();",
3208               ShortMergedIf);
3209  verifyFormat("{\n"
3210               "#ifdef A\n"
3211               "  // Comment\n"
3212               "  if (true) continue;\n"
3213               "#endif\n"
3214               "  // Comment\n"
3215               "  if (true) continue;",
3216               ShortMergedIf);
3217}
3218
3219TEST_F(FormatTest, BlockCommentsInControlLoops) {
3220  verifyFormat("if (0) /* a comment in a strange place */ {\n"
3221               "  f();\n"
3222               "}");
3223  verifyFormat("if (0) /* a comment in a strange place */ {\n"
3224               "  f();\n"
3225               "} /* another comment */ else /* comment #3 */ {\n"
3226               "  g();\n"
3227               "}");
3228  verifyFormat("while (0) /* a comment in a strange place */ {\n"
3229               "  f();\n"
3230               "}");
3231  verifyFormat("for (;;) /* a comment in a strange place */ {\n"
3232               "  f();\n"
3233               "}");
3234  verifyFormat("do /* a comment in a strange place */ {\n"
3235               "  f();\n"
3236               "} /* another comment */ while (0);");
3237}
3238
3239TEST_F(FormatTest, BlockComments) {
3240  EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */",
3241            format("/* *//* */  /* */\n/* *//* */  /* */"));
3242  EXPECT_EQ("/* */ a /* */ b;", format("  /* */  a/* */  b;"));
3243  EXPECT_EQ("#define A /*123*/\\\n"
3244            "  b\n"
3245            "/* */\n"
3246            "someCall(\n"
3247            "    parameter);",
3248            format("#define A /*123*/ b\n"
3249                   "/* */\n"
3250                   "someCall(parameter);",
3251                   getLLVMStyleWithColumns(15)));
3252
3253  EXPECT_EQ("#define A\n"
3254            "/* */ someCall(\n"
3255            "    parameter);",
3256            format("#define A\n"
3257                   "/* */someCall(parameter);",
3258                   getLLVMStyleWithColumns(15)));
3259
3260  FormatStyle NoBinPacking = getLLVMStyle();
3261  NoBinPacking.BinPackParameters = false;
3262  EXPECT_EQ("someFunction(1, /* comment 1 */\n"
3263            "             2, /* comment 2 */\n"
3264            "             3, /* comment 3 */\n"
3265            "             aaaa,\n"
3266            "             bbbb);",
3267            format("someFunction (1,   /* comment 1 */\n"
3268                   "                2, /* comment 2 */  \n"
3269                   "               3,   /* comment 3 */\n"
3270                   "aaaa, bbbb );",
3271                   NoBinPacking));
3272  verifyFormat(
3273      "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
3274      "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
3275  EXPECT_EQ(
3276      "bool aaaaaaaaaaaaa = /* trailing comment */\n"
3277      "    aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
3278      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;",
3279      format(
3280          "bool       aaaaaaaaaaaaa =       /* trailing comment */\n"
3281          "    aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa    ||\n"
3282          "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa   || aaaaaaaaaaaaaaaaaaaaaaaaaa;"));
3283  EXPECT_EQ(
3284      "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
3285      "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;   /* comment */\n"
3286      "int cccccccccccccccccccccccccccccc;       /* comment */\n",
3287      format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
3288             "int      bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
3289             "int    cccccccccccccccccccccccccccccc;  /* comment */\n"));
3290}
3291
3292TEST_F(FormatTest, BlockCommentsInMacros) {
3293  EXPECT_EQ("#define A          \\\n"
3294            "  {                \\\n"
3295            "    /* one line */ \\\n"
3296            "    someCall();",
3297            format("#define A {        \\\n"
3298                   "  /* one line */   \\\n"
3299                   "  someCall();",
3300                   getLLVMStyleWithColumns(20)));
3301  EXPECT_EQ("#define A          \\\n"
3302            "  {                \\\n"
3303            "    /* previous */ \\\n"
3304            "    /* one line */ \\\n"
3305            "    someCall();",
3306            format("#define A {        \\\n"
3307                   "  /* previous */   \\\n"
3308                   "  /* one line */   \\\n"
3309                   "  someCall();",
3310                   getLLVMStyleWithColumns(20)));
3311}
3312
3313TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) {
3314  // FIXME: This is not what we want...
3315  verifyFormat("{\n"
3316               "// a"
3317               "// b");
3318}
3319
3320TEST_F(FormatTest, FormatStarDependingOnContext) {
3321  verifyFormat("void f(int *a);");
3322  verifyFormat("void f() { f(fint * b); }");
3323  verifyFormat("class A {\n  void f(int *a);\n};");
3324  verifyFormat("class A {\n  int *a;\n};");
3325  verifyFormat("namespace a {\n"
3326               "namespace b {\n"
3327               "class A {\n"
3328               "  void f() {}\n"
3329               "  int *a;\n"
3330               "};\n"
3331               "}\n"
3332               "}");
3333}
3334
3335TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
3336  verifyFormat("while");
3337  verifyFormat("operator");
3338}
3339
3340//===----------------------------------------------------------------------===//
3341// Objective-C tests.
3342//===----------------------------------------------------------------------===//
3343
3344TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
3345  verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
3346  EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
3347            format("-(NSUInteger)indexOfObject:(id)anObject;"));
3348  EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
3349  EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
3350  EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
3351            format("-(NSInteger)Method3:(id)anObject;"));
3352  EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
3353            format("-(NSInteger)Method4:(id)anObject;"));
3354  EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
3355            format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
3356  EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
3357            format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
3358  EXPECT_EQ(
3359      "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;",
3360      format(
3361          "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;"));
3362
3363  // Very long objectiveC method declaration.
3364  verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
3365               "                    inRange:(NSRange)range\n"
3366               "                   outRange:(NSRange)out_range\n"
3367               "                  outRange1:(NSRange)out_range1\n"
3368               "                  outRange2:(NSRange)out_range2\n"
3369               "                  outRange3:(NSRange)out_range3\n"
3370               "                  outRange4:(NSRange)out_range4\n"
3371               "                  outRange5:(NSRange)out_range5\n"
3372               "                  outRange6:(NSRange)out_range6\n"
3373               "                  outRange7:(NSRange)out_range7\n"
3374               "                  outRange8:(NSRange)out_range8\n"
3375               "                  outRange9:(NSRange)out_range9;");
3376
3377  verifyFormat("- (int)sum:(vector<int>)numbers;");
3378  verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
3379  // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
3380  // protocol lists (but not for template classes):
3381  //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
3382
3383  verifyFormat("- (int(*)())foo:(int(*)())f;");
3384  verifyGoogleFormat("- (int(*)())foo:(int(*)())foo;");
3385
3386  // If there's no return type (very rare in practice!), LLVM and Google style
3387  // agree.
3388  verifyFormat("- foo;");
3389  verifyFormat("- foo:(int)f;");
3390  verifyGoogleFormat("- foo:(int)foo;");
3391}
3392
3393TEST_F(FormatTest, FormatObjCBlocks) {
3394  verifyFormat("int (^Block)(int, int);");
3395  verifyFormat("int (^Block1)(int, int) = ^(int i, int j)");
3396}
3397
3398TEST_F(FormatTest, FormatObjCInterface) {
3399  verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n"
3400               "@public\n"
3401               "  int field1;\n"
3402               "@protected\n"
3403               "  int field2;\n"
3404               "@private\n"
3405               "  int field3;\n"
3406               "@package\n"
3407               "  int field4;\n"
3408               "}\n"
3409               "+ (id)init;\n"
3410               "@end");
3411
3412  verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n"
3413                     " @public\n"
3414                     "  int field1;\n"
3415                     " @protected\n"
3416                     "  int field2;\n"
3417                     " @private\n"
3418                     "  int field3;\n"
3419                     " @package\n"
3420                     "  int field4;\n"
3421                     "}\n"
3422                     "+ (id)init;\n"
3423                     "@end");
3424
3425  verifyFormat("@interface /* wait for it */ Foo\n"
3426               "+ (id)init;\n"
3427               "// Look, a comment!\n"
3428               "- (int)answerWith:(int)i;\n"
3429               "@end");
3430
3431  verifyFormat("@interface Foo\n"
3432               "@end\n"
3433               "@interface Bar\n"
3434               "@end");
3435
3436  verifyFormat("@interface Foo : Bar\n"
3437               "+ (id)init;\n"
3438               "@end");
3439
3440  verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n"
3441               "+ (id)init;\n"
3442               "@end");
3443
3444  verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n"
3445                     "+ (id)init;\n"
3446                     "@end");
3447
3448  verifyFormat("@interface Foo (HackStuff)\n"
3449               "+ (id)init;\n"
3450               "@end");
3451
3452  verifyFormat("@interface Foo ()\n"
3453               "+ (id)init;\n"
3454               "@end");
3455
3456  verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n"
3457               "+ (id)init;\n"
3458               "@end");
3459
3460  verifyGoogleFormat("@interface Foo (HackStuff)<MyProtocol>\n"
3461                     "+ (id)init;\n"
3462                     "@end");
3463
3464  verifyFormat("@interface Foo {\n"
3465               "  int _i;\n"
3466               "}\n"
3467               "+ (id)init;\n"
3468               "@end");
3469
3470  verifyFormat("@interface Foo : Bar {\n"
3471               "  int _i;\n"
3472               "}\n"
3473               "+ (id)init;\n"
3474               "@end");
3475
3476  verifyFormat("@interface Foo : Bar <Baz, Quux> {\n"
3477               "  int _i;\n"
3478               "}\n"
3479               "+ (id)init;\n"
3480               "@end");
3481
3482  verifyFormat("@interface Foo (HackStuff) {\n"
3483               "  int _i;\n"
3484               "}\n"
3485               "+ (id)init;\n"
3486               "@end");
3487
3488  verifyFormat("@interface Foo () {\n"
3489               "  int _i;\n"
3490               "}\n"
3491               "+ (id)init;\n"
3492               "@end");
3493
3494  verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n"
3495               "  int _i;\n"
3496               "}\n"
3497               "+ (id)init;\n"
3498               "@end");
3499}
3500
3501TEST_F(FormatTest, FormatObjCImplementation) {
3502  verifyFormat("@implementation Foo : NSObject {\n"
3503               "@public\n"
3504               "  int field1;\n"
3505               "@protected\n"
3506               "  int field2;\n"
3507               "@private\n"
3508               "  int field3;\n"
3509               "@package\n"
3510               "  int field4;\n"
3511               "}\n"
3512               "+ (id)init {\n}\n"
3513               "@end");
3514
3515  verifyGoogleFormat("@implementation Foo : NSObject {\n"
3516                     " @public\n"
3517                     "  int field1;\n"
3518                     " @protected\n"
3519                     "  int field2;\n"
3520                     " @private\n"
3521                     "  int field3;\n"
3522                     " @package\n"
3523                     "  int field4;\n"
3524                     "}\n"
3525                     "+ (id)init {\n}\n"
3526                     "@end");
3527
3528  verifyFormat("@implementation Foo\n"
3529               "+ (id)init {\n"
3530               "  if (true)\n"
3531               "    return nil;\n"
3532               "}\n"
3533               "// Look, a comment!\n"
3534               "- (int)answerWith:(int)i {\n"
3535               "  return i;\n"
3536               "}\n"
3537               "+ (int)answerWith:(int)i {\n"
3538               "  return i;\n"
3539               "}\n"
3540               "@end");
3541
3542  verifyFormat("@implementation Foo\n"
3543               "@end\n"
3544               "@implementation Bar\n"
3545               "@end");
3546
3547  verifyFormat("@implementation Foo : Bar\n"
3548               "+ (id)init {\n}\n"
3549               "- (void)foo {\n}\n"
3550               "@end");
3551
3552  verifyFormat("@implementation Foo {\n"
3553               "  int _i;\n"
3554               "}\n"
3555               "+ (id)init {\n}\n"
3556               "@end");
3557
3558  verifyFormat("@implementation Foo : Bar {\n"
3559               "  int _i;\n"
3560               "}\n"
3561               "+ (id)init {\n}\n"
3562               "@end");
3563
3564  verifyFormat("@implementation Foo (HackStuff)\n"
3565               "+ (id)init {\n}\n"
3566               "@end");
3567}
3568
3569TEST_F(FormatTest, FormatObjCProtocol) {
3570  verifyFormat("@protocol Foo\n"
3571               "@property(weak) id delegate;\n"
3572               "- (NSUInteger)numberOfThings;\n"
3573               "@end");
3574
3575  verifyFormat("@protocol MyProtocol <NSObject>\n"
3576               "- (NSUInteger)numberOfThings;\n"
3577               "@end");
3578
3579  verifyGoogleFormat("@protocol MyProtocol<NSObject>\n"
3580                     "- (NSUInteger)numberOfThings;\n"
3581                     "@end");
3582
3583  verifyFormat("@protocol Foo;\n"
3584               "@protocol Bar;\n");
3585
3586  verifyFormat("@protocol Foo\n"
3587               "@end\n"
3588               "@protocol Bar\n"
3589               "@end");
3590
3591  verifyFormat("@protocol myProtocol\n"
3592               "- (void)mandatoryWithInt:(int)i;\n"
3593               "@optional\n"
3594               "- (void)optional;\n"
3595               "@required\n"
3596               "- (void)required;\n"
3597               "@optional\n"
3598               "@property(assign) int madProp;\n"
3599               "@end\n");
3600}
3601
3602TEST_F(FormatTest, FormatObjCMethodDeclarations) {
3603  verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n"
3604               "                   rect:(NSRect)theRect\n"
3605               "               interval:(float)theInterval {\n"
3606               "}");
3607  verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n"
3608               "          longKeyword:(NSRect)theRect\n"
3609               "    evenLongerKeyword:(float)theInterval\n"
3610               "                error:(NSError **)theError {\n"
3611               "}");
3612}
3613
3614TEST_F(FormatTest, FormatObjCMethodExpr) {
3615  verifyFormat("[foo bar:baz];");
3616  verifyFormat("return [foo bar:baz];");
3617  verifyFormat("f([foo bar:baz]);");
3618  verifyFormat("f(2, [foo bar:baz]);");
3619  verifyFormat("f(2, a ? b : c);");
3620  verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];");
3621
3622  // Unary operators.
3623  verifyFormat("int a = +[foo bar:baz];");
3624  verifyFormat("int a = -[foo bar:baz];");
3625  verifyFormat("int a = ![foo bar:baz];");
3626  verifyFormat("int a = ~[foo bar:baz];");
3627  verifyFormat("int a = ++[foo bar:baz];");
3628  verifyFormat("int a = --[foo bar:baz];");
3629  verifyFormat("int a = sizeof [foo bar:baz];");
3630  verifyFormat("int a = alignof [foo bar:baz];");
3631  verifyFormat("int a = &[foo bar:baz];");
3632  verifyFormat("int a = *[foo bar:baz];");
3633  // FIXME: Make casts work, without breaking f()[4].
3634  //verifyFormat("int a = (int)[foo bar:baz];");
3635  //verifyFormat("return (int)[foo bar:baz];");
3636  //verifyFormat("(void)[foo bar:baz];");
3637  verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];");
3638
3639  // Binary operators.
3640  verifyFormat("[foo bar:baz], [foo bar:baz];");
3641  verifyFormat("[foo bar:baz] = [foo bar:baz];");
3642  verifyFormat("[foo bar:baz] *= [foo bar:baz];");
3643  verifyFormat("[foo bar:baz] /= [foo bar:baz];");
3644  verifyFormat("[foo bar:baz] %= [foo bar:baz];");
3645  verifyFormat("[foo bar:baz] += [foo bar:baz];");
3646  verifyFormat("[foo bar:baz] -= [foo bar:baz];");
3647  verifyFormat("[foo bar:baz] <<= [foo bar:baz];");
3648  verifyFormat("[foo bar:baz] >>= [foo bar:baz];");
3649  verifyFormat("[foo bar:baz] &= [foo bar:baz];");
3650  verifyFormat("[foo bar:baz] ^= [foo bar:baz];");
3651  verifyFormat("[foo bar:baz] |= [foo bar:baz];");
3652  verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];");
3653  verifyFormat("[foo bar:baz] || [foo bar:baz];");
3654  verifyFormat("[foo bar:baz] && [foo bar:baz];");
3655  verifyFormat("[foo bar:baz] | [foo bar:baz];");
3656  verifyFormat("[foo bar:baz] ^ [foo bar:baz];");
3657  verifyFormat("[foo bar:baz] & [foo bar:baz];");
3658  verifyFormat("[foo bar:baz] == [foo bar:baz];");
3659  verifyFormat("[foo bar:baz] != [foo bar:baz];");
3660  verifyFormat("[foo bar:baz] >= [foo bar:baz];");
3661  verifyFormat("[foo bar:baz] <= [foo bar:baz];");
3662  verifyFormat("[foo bar:baz] > [foo bar:baz];");
3663  verifyFormat("[foo bar:baz] < [foo bar:baz];");
3664  verifyFormat("[foo bar:baz] >> [foo bar:baz];");
3665  verifyFormat("[foo bar:baz] << [foo bar:baz];");
3666  verifyFormat("[foo bar:baz] - [foo bar:baz];");
3667  verifyFormat("[foo bar:baz] + [foo bar:baz];");
3668  verifyFormat("[foo bar:baz] * [foo bar:baz];");
3669  verifyFormat("[foo bar:baz] / [foo bar:baz];");
3670  verifyFormat("[foo bar:baz] % [foo bar:baz];");
3671  // Whew!
3672
3673  verifyFormat("return in[42];");
3674  verifyFormat("for (id foo in [self getStuffFor:bla]) {\n"
3675               "}");
3676
3677  verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];");
3678  verifyFormat("[self stuffWithInt:a ? b : c float:4.5];");
3679  verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];");
3680  verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];");
3681  verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]");
3682  verifyFormat("[button setAction:@selector(zoomOut:)];");
3683  verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];");
3684
3685  verifyFormat("arr[[self indexForFoo:a]];");
3686  verifyFormat("throw [self errorFor:a];");
3687  verifyFormat("@throw [self errorFor:a];");
3688
3689  // This tests that the formatter doesn't break after "backing" but before ":",
3690  // which would be at 80 columns.
3691  verifyFormat(
3692      "void f() {\n"
3693      "  if ((self = [super initWithContentRect:contentRect\n"
3694      "                               styleMask:styleMask\n"
3695      "                                 backing:NSBackingStoreBuffered\n"
3696      "                                   defer:YES]))");
3697
3698  verifyFormat(
3699      "[foo checkThatBreakingAfterColonWorksOk:\n"
3700      "        [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];");
3701
3702  verifyFormat("[myObj short:arg1 // Force line break\n"
3703               "          longKeyword:arg2\n"
3704               "    evenLongerKeyword:arg3\n"
3705               "                error:arg4];");
3706  verifyFormat(
3707      "void f() {\n"
3708      "  popup_window_.reset([[RenderWidgetPopupWindow alloc]\n"
3709      "      initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n"
3710      "                                     pos.width(), pos.height())\n"
3711      "                styleMask:NSBorderlessWindowMask\n"
3712      "                  backing:NSBackingStoreBuffered\n"
3713      "                    defer:NO]);\n"
3714      "}");
3715  verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n"
3716               "                             with:contentsNativeView];");
3717
3718  verifyFormat(
3719      "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n"
3720      "           owner:nillllll];");
3721
3722  verifyFormat(
3723      "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n"
3724      "        forType:kBookmarkButtonDragType];");
3725
3726  verifyFormat("[defaultCenter addObserver:self\n"
3727               "                  selector:@selector(willEnterFullscreen)\n"
3728               "                      name:kWillEnterFullscreenNotification\n"
3729               "                    object:nil];");
3730  verifyFormat("[image_rep drawInRect:drawRect\n"
3731               "             fromRect:NSZeroRect\n"
3732               "            operation:NSCompositeCopy\n"
3733               "             fraction:1.0\n"
3734               "       respectFlipped:NO\n"
3735               "                hints:nil];");
3736
3737  verifyFormat(
3738      "scoped_nsobject<NSTextField> message(\n"
3739      "    // The frame will be fixed up when |-setMessageText:| is called.\n"
3740      "    [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);");
3741}
3742
3743TEST_F(FormatTest, ObjCAt) {
3744  verifyFormat("@autoreleasepool");
3745  verifyFormat("@catch");
3746  verifyFormat("@class");
3747  verifyFormat("@compatibility_alias");
3748  verifyFormat("@defs");
3749  verifyFormat("@dynamic");
3750  verifyFormat("@encode");
3751  verifyFormat("@end");
3752  verifyFormat("@finally");
3753  verifyFormat("@implementation");
3754  verifyFormat("@import");
3755  verifyFormat("@interface");
3756  verifyFormat("@optional");
3757  verifyFormat("@package");
3758  verifyFormat("@private");
3759  verifyFormat("@property");
3760  verifyFormat("@protected");
3761  verifyFormat("@protocol");
3762  verifyFormat("@public");
3763  verifyFormat("@required");
3764  verifyFormat("@selector");
3765  verifyFormat("@synchronized");
3766  verifyFormat("@synthesize");
3767  verifyFormat("@throw");
3768  verifyFormat("@try");
3769
3770  EXPECT_EQ("@interface", format("@ interface"));
3771
3772  // The precise formatting of this doesn't matter, nobody writes code like
3773  // this.
3774  verifyFormat("@ /*foo*/ interface");
3775}
3776
3777TEST_F(FormatTest, ObjCSnippets) {
3778  verifyFormat("@autoreleasepool {\n"
3779               "  foo();\n"
3780               "}");
3781  verifyFormat("@class Foo, Bar;");
3782  verifyFormat("@compatibility_alias AliasName ExistingClass;");
3783  verifyFormat("@dynamic textColor;");
3784  verifyFormat("char *buf1 = @encode(int *);");
3785  verifyFormat("char *buf1 = @encode(typeof(4 * 5));");
3786  verifyFormat("char *buf1 = @encode(int **);");
3787  verifyFormat("Protocol *proto = @protocol(p1);");
3788  verifyFormat("SEL s = @selector(foo:);");
3789  verifyFormat("@synchronized(self) {\n"
3790               "  f();\n"
3791               "}");
3792
3793  verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
3794  verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
3795
3796  verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;");
3797  verifyFormat("@property(assign, getter=isEditable) BOOL editable;");
3798  verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;");
3799}
3800
3801TEST_F(FormatTest, ObjCLiterals) {
3802  verifyFormat("@\"String\"");
3803  verifyFormat("@1");
3804  verifyFormat("@+4.8");
3805  verifyFormat("@-4");
3806  verifyFormat("@1LL");
3807  verifyFormat("@.5");
3808  verifyFormat("@'c'");
3809  verifyFormat("@true");
3810
3811  verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);");
3812  verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);");
3813  verifyFormat("NSNumber *favoriteColor = @(Green);");
3814  verifyFormat("NSString *path = @(getenv(\"PATH\"));");
3815
3816  verifyFormat("@[");
3817  verifyFormat("@[]");
3818  verifyFormat(
3819      "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];");
3820  verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];");
3821
3822  verifyFormat("@{");
3823  verifyFormat("@{}");
3824  verifyFormat("@{ @\"one\" : @1 }");
3825  verifyFormat("return @{ @\"one\" : @1 };");
3826  verifyFormat("@{ @\"one\" : @1, }");
3827
3828  // FIXME: Breaking in cases where we think there's a structural error
3829  // showed that we're incorrectly parsing this code. We need to fix the
3830  // parsing here.
3831  verifyFormat("@{ @\"one\" : @\n"
3832               "{ @2 : @1 }\n"
3833               "}");
3834  verifyFormat("@{ @\"one\" : @\n"
3835               "{ @2 : @1 }\n"
3836               ",\n"
3837               "}");
3838
3839  verifyFormat("@{ 1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2 }");
3840  verifyFormat("[self setDict:@{}");
3841  verifyFormat("[self setDict:@{ @1 : @2 }");
3842  verifyFormat("NSLog(@\"%@\", @{ @1 : @2, @2 : @3 }[@1]);");
3843  verifyFormat(
3844      "NSDictionary *masses = @{ @\"H\" : @1.0078, @\"He\" : @4.0026 };");
3845  verifyFormat(
3846      "NSDictionary *settings = @{ AVEncoderKey : @(AVAudioQualityMax) };");
3847
3848  // FIXME: Nested and multi-line array and dictionary literals need more work.
3849  verifyFormat(
3850      "NSDictionary *d = @{ @\"nam\" : NSUserNam(), @\"dte\" : [NSDate date],\n"
3851      "                     @\"processInfo\" : [NSProcessInfo processInfo] };");
3852}
3853
3854TEST_F(FormatTest, ReformatRegionAdjustsIndent) {
3855  EXPECT_EQ("{\n"
3856            "{\n"
3857            "a;\n"
3858            "b;\n"
3859            "}\n"
3860            "}",
3861            format("{\n"
3862                   "{\n"
3863                   "a;\n"
3864                   "     b;\n"
3865                   "}\n"
3866                   "}",
3867                   13, 2, getLLVMStyle()));
3868  EXPECT_EQ("{\n"
3869            "{\n"
3870            "  a;\n"
3871            "b;\n"
3872            "}\n"
3873            "}",
3874            format("{\n"
3875                   "{\n"
3876                   "     a;\n"
3877                   "b;\n"
3878                   "}\n"
3879                   "}",
3880                   9, 2, getLLVMStyle()));
3881  EXPECT_EQ("{\n"
3882            "{\n"
3883            "public:\n"
3884            "  b;\n"
3885            "}\n"
3886            "}",
3887            format("{\n"
3888                   "{\n"
3889                   "public:\n"
3890                   "     b;\n"
3891                   "}\n"
3892                   "}",
3893                   17, 2, getLLVMStyle()));
3894  EXPECT_EQ("{\n"
3895            "{\n"
3896            "a;\n"
3897            "}\n"
3898            "{\n"
3899            "  b; //\n"
3900            "}\n"
3901            "}",
3902            format("{\n"
3903                   "{\n"
3904                   "a;\n"
3905                   "}\n"
3906                   "{\n"
3907                   "           b; //\n"
3908                   "}\n"
3909                   "}",
3910                   22, 2, getLLVMStyle()));
3911  EXPECT_EQ("  {\n"
3912            "    a; //\n"
3913            "  }",
3914            format("  {\n"
3915                   "a; //\n"
3916                   "  }",
3917                   4, 2, getLLVMStyle()));
3918  EXPECT_EQ("void f() {}\n"
3919            "void g() {}",
3920            format("void f() {}\n"
3921                   "void g() {}",
3922                   13, 0, getLLVMStyle()));
3923  EXPECT_EQ("int a; // comment\n"
3924            "       // line 2\n"
3925            "int b;",
3926            format("int a; // comment\n"
3927                   "       // line 2\n"
3928                   "  int b;",
3929                   35, 0, getLLVMStyle()));
3930}
3931
3932TEST_F(FormatTest, BreakStringLiterals) {
3933  EXPECT_EQ("\"some text \"\n"
3934            "\"other\";",
3935            format("\"some text other\";", getLLVMStyleWithColumns(12)));
3936  EXPECT_EQ("\"some text \"\n"
3937            "\"other\";",
3938            format("\\\n\"some text other\";", getLLVMStyleWithColumns(12)));
3939  EXPECT_EQ(
3940      "#define A  \\\n"
3941      "  \"some \"  \\\n"
3942      "  \"text \"  \\\n"
3943      "  \"other\";",
3944      format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
3945  EXPECT_EQ(
3946      "#define A  \\\n"
3947      "  \"so \"    \\\n"
3948      "  \"text \"  \\\n"
3949      "  \"other\";",
3950      format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
3951
3952  EXPECT_EQ("\"some text\"",
3953            format("\"some text\"", getLLVMStyleWithColumns(1)));
3954  EXPECT_EQ("\"some text\"",
3955            format("\"some text\"", getLLVMStyleWithColumns(11)));
3956  EXPECT_EQ("\"some \"\n"
3957            "\"text\"",
3958            format("\"some text\"", getLLVMStyleWithColumns(10)));
3959  EXPECT_EQ("\"some \"\n"
3960            "\"text\"",
3961            format("\"some text\"", getLLVMStyleWithColumns(7)));
3962  EXPECT_EQ("\"some\"\n"
3963            "\" tex\"\n"
3964            "\"t\"",
3965            format("\"some text\"", getLLVMStyleWithColumns(6)));
3966  EXPECT_EQ("\"some\"\n"
3967            "\" tex\"\n"
3968            "\" and\"",
3969            format("\"some tex and\"", getLLVMStyleWithColumns(6)));
3970  EXPECT_EQ("\"some\"\n"
3971            "\"/tex\"\n"
3972            "\"/and\"",
3973            format("\"some/tex/and\"", getLLVMStyleWithColumns(6)));
3974
3975  EXPECT_EQ("variable =\n"
3976            "    \"long string \"\n"
3977            "    \"literal\";",
3978            format("variable = \"long string literal\";",
3979                   getLLVMStyleWithColumns(20)));
3980
3981  EXPECT_EQ("variable = f(\n"
3982            "    \"long string \"\n"
3983            "    \"literal\",\n"
3984            "    short,\n"
3985            "    loooooooooooooooooooong);",
3986            format("variable = f(\"long string literal\", short, "
3987                   "loooooooooooooooooooong);",
3988                   getLLVMStyleWithColumns(20)));
3989  EXPECT_EQ(
3990      "f(\"one two\".split(\n"
3991      "    variable));",
3992      format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
3993  EXPECT_EQ("f(\"one two three four five six \"\n"
3994            "  \"seven\".split(\n"
3995            "      really_looooong_variable));",
3996            format("f(\"one two three four five six seven\"."
3997                   "split(really_looooong_variable));",
3998                   getLLVMStyleWithColumns(33)));
3999
4000  EXPECT_EQ("f(\"some \"\n"
4001            "  \"text\",\n"
4002            "  other);",
4003            format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
4004
4005  // Only break as a last resort.
4006  verifyFormat(
4007      "aaaaaaaaaaaaaaaaaaaa(\n"
4008      "    aaaaaaaaaaaaaaaaaaaa,\n"
4009      "    aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
4010
4011  EXPECT_EQ(
4012      "\"splitmea\"\n"
4013      "\"trandomp\"\n"
4014      "\"oint\"",
4015      format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10)));
4016
4017  EXPECT_EQ(
4018      "\"split/\"\n"
4019      "\"pathat/\"\n"
4020      "\"slashes\"",
4021      format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10)));
4022
4023  FormatStyle AlignLeft = getLLVMStyleWithColumns(12);
4024  AlignLeft.AlignEscapedNewlinesLeft = true;
4025  EXPECT_EQ(
4026      "#define A \\\n"
4027      "  \"some \" \\\n"
4028      "  \"text \" \\\n"
4029      "  \"other\";",
4030      format("#define A \"some text other\";", AlignLeft));
4031}
4032
4033TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) {
4034  EXPECT_EQ("someFunction(\"aaabbbcccd\"\n"
4035            "             \"ddeeefff\");",
4036            format("someFunction(\"aaabbbcccdddeeefff\");",
4037                   getLLVMStyleWithColumns(25)));
4038  EXPECT_EQ("someFunction1234567890(\n"
4039            "    \"aaabbbcccdddeeefff\");",
4040            format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
4041                   getLLVMStyleWithColumns(26)));
4042  EXPECT_EQ("someFunction1234567890(\n"
4043            "    \"aaabbbcccdddeeeff\"\n"
4044            "    \"f\");",
4045            format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
4046                   getLLVMStyleWithColumns(25)));
4047  EXPECT_EQ("someFunction1234567890(\n"
4048            "    \"aaabbbcccdddeeeff\"\n"
4049            "    \"f\");",
4050            format("someFunction1234567890(\"aaabbbcccdddeeefff\");",
4051                   getLLVMStyleWithColumns(24)));
4052  EXPECT_EQ("someFunction(\n"
4053            "    \"aaabbbcc \"\n"
4054            "    \"dddeeefff\");",
4055            format("someFunction(\"aaabbbcc dddeeefff\");",
4056                   getLLVMStyleWithColumns(25)));
4057  EXPECT_EQ("someFunction(\"aaabbbccc \"\n"
4058            "             \"ddeeefff\");",
4059            format("someFunction(\"aaabbbccc ddeeefff\");",
4060                   getLLVMStyleWithColumns(25)));
4061  EXPECT_EQ("someFunction1234567890(\n"
4062            "    \"aaabb \"\n"
4063            "    \"cccdddeeefff\");",
4064            format("someFunction1234567890(\"aaabb cccdddeeefff\");",
4065                   getLLVMStyleWithColumns(25)));
4066  EXPECT_EQ("#define A          \\\n"
4067            "  string s =       \\\n"
4068            "      \"123456789\"  \\\n"
4069            "      \"0\";         \\\n"
4070            "  int i;",
4071            format("#define A string s = \"1234567890\"; int i;",
4072                   getLLVMStyleWithColumns(20)));
4073}
4074
4075TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) {
4076  EXPECT_EQ("\"\\a\"",
4077            format("\"\\a\"", getLLVMStyleWithColumns(3)));
4078  EXPECT_EQ("\"\\\"",
4079            format("\"\\\"", getLLVMStyleWithColumns(2)));
4080  EXPECT_EQ("\"test\"\n"
4081            "\"\\n\"",
4082            format("\"test\\n\"", getLLVMStyleWithColumns(7)));
4083  EXPECT_EQ("\"tes\\\\\"\n"
4084            "\"n\"",
4085            format("\"tes\\\\n\"", getLLVMStyleWithColumns(7)));
4086  EXPECT_EQ("\"\\\\\\\\\"\n"
4087            "\"\\n\"",
4088            format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7)));
4089  EXPECT_EQ("\"\\uff01\"",
4090            format("\"\\uff01\"", getLLVMStyleWithColumns(7)));
4091  EXPECT_EQ("\"\\uff01\"\n"
4092            "\"test\"",
4093            format("\"\\uff01test\"", getLLVMStyleWithColumns(8)));
4094  EXPECT_EQ("\"\\Uff01ff02\"",
4095            format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11)));
4096  EXPECT_EQ("\"\\x000000000001\"\n"
4097            "\"next\"",
4098            format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16)));
4099  EXPECT_EQ("\"\\x000000000001next\"",
4100            format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15)));
4101  EXPECT_EQ("\"\\x000000000001\"",
4102            format("\"\\x000000000001\"", getLLVMStyleWithColumns(7)));
4103  EXPECT_EQ("\"test\"\n"
4104            "\"\\000000\"\n"
4105            "\"000001\"",
4106            format("\"test\\000000000001\"", getLLVMStyleWithColumns(9)));
4107  EXPECT_EQ("\"test\\000\"\n"
4108            "\"00000000\"\n"
4109            "\"1\"",
4110            format("\"test\\000000000001\"", getLLVMStyleWithColumns(10)));
4111  EXPECT_EQ("R\"(\\x\\x00)\"\n",
4112            format("R\"(\\x\\x00)\"\n", getLLVMStyleWithColumns(7)));
4113}
4114
4115TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) {
4116  verifyFormat("void f() {\n"
4117               "  return g() {}\n"
4118               "  void h() {}");
4119  verifyFormat("if (foo)\n"
4120               "  return { forgot_closing_brace();\n"
4121               "test();");
4122  verifyFormat("int a[] = { void forgot_closing_brace()\n"
4123               "{\n"
4124               "  f();\n"
4125               "  g();\n"
4126               "}");
4127}
4128
4129TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) {
4130  verifyFormat("class X {\n"
4131               "  void f() {\n"
4132               "  }\n"
4133               "};",
4134               getLLVMStyleWithColumns(12));
4135}
4136
4137TEST_F(FormatTest, ConfigurableIndentWidth) {
4138  FormatStyle EightIndent = getLLVMStyleWithColumns(18);
4139  EightIndent.IndentWidth = 8;
4140  verifyFormat("void f() {\n"
4141               "        someFunction();\n"
4142               "        if (true) {\n"
4143               "                f();\n"
4144               "        }\n"
4145               "}",
4146               EightIndent);
4147  verifyFormat("class X {\n"
4148               "        void f() {\n"
4149               "        }\n"
4150               "};",
4151               EightIndent);
4152  verifyFormat("int x[] = {\n"
4153               "        call(),\n"
4154               "        call(),\n"
4155               "};",
4156               EightIndent);
4157}
4158
4159TEST_F(FormatTest, ConfigurableUseOfTab) {
4160  FormatStyle Tab = getLLVMStyleWithColumns(42);
4161  Tab.IndentWidth = 8;
4162  Tab.UseTab = true;
4163  Tab.AlignEscapedNewlinesLeft = true;
4164  verifyFormat("class X {\n"
4165               "\tvoid f() {\n"
4166               "\t\tsomeFunction(parameter1,\n"
4167               "\t\t\t     parameter2);\n"
4168               "\t}\n"
4169               "};",
4170               Tab);
4171  verifyFormat("#define A                        \\\n"
4172               "\tvoid f() {               \\\n"
4173               "\t\tsomeFunction(    \\\n"
4174               "\t\t    parameter1,  \\\n"
4175               "\t\t    parameter2); \\\n"
4176               "\t}",
4177               Tab);
4178}
4179
4180TEST_F(FormatTest, LinuxBraceBreaking) {
4181  FormatStyle BreakBeforeBrace = getLLVMStyle();
4182  BreakBeforeBrace.BreakBeforeBraces = FormatStyle::BS_Linux;
4183  verifyFormat("namespace a\n"
4184               "{\n"
4185               "class A\n"
4186               "{\n"
4187               "  void f()\n"
4188               "  {\n"
4189               "    if (true) {\n"
4190               "      a();\n"
4191               "      b();\n"
4192               "    }\n"
4193               "  }\n"
4194               "  void g()\n"
4195               "  {\n"
4196               "    return;\n"
4197               "  }\n"
4198               "}\n"
4199               "}",
4200               BreakBeforeBrace);
4201}
4202
4203TEST_F(FormatTest, StroustrupBraceBreaking) {
4204  FormatStyle BreakBeforeBrace = getLLVMStyle();
4205  BreakBeforeBrace.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
4206  verifyFormat("namespace a {\n"
4207               "class A {\n"
4208               "  void f()\n"
4209               "  {\n"
4210               "    if (true) {\n"
4211               "      a();\n"
4212               "      b();\n"
4213               "    }\n"
4214               "  }\n"
4215               "  void g()\n"
4216               "  {\n"
4217               "    return;\n"
4218               "  }\n"
4219               "}\n"
4220               "}",
4221               BreakBeforeBrace);
4222}
4223
4224bool allStylesEqual(ArrayRef<FormatStyle> Styles) {
4225  for (size_t i = 1; i < Styles.size(); ++i)
4226    if (!(Styles[0] == Styles[i]))
4227      return false;
4228  return true;
4229}
4230
4231TEST_F(FormatTest, GetsPredefinedStyleByName) {
4232  FormatStyle Styles[3];
4233
4234  Styles[0] = getLLVMStyle();
4235  EXPECT_TRUE(getPredefinedStyle("LLVM", &Styles[1]));
4236  EXPECT_TRUE(getPredefinedStyle("lLvM", &Styles[2]));
4237  EXPECT_TRUE(allStylesEqual(Styles));
4238
4239  Styles[0] = getGoogleStyle();
4240  EXPECT_TRUE(getPredefinedStyle("Google", &Styles[1]));
4241  EXPECT_TRUE(getPredefinedStyle("gOOgle", &Styles[2]));
4242  EXPECT_TRUE(allStylesEqual(Styles));
4243
4244  Styles[0] = getChromiumStyle();
4245  EXPECT_TRUE(getPredefinedStyle("Chromium", &Styles[1]));
4246  EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", &Styles[2]));
4247  EXPECT_TRUE(allStylesEqual(Styles));
4248
4249  Styles[0] = getMozillaStyle();
4250  EXPECT_TRUE(getPredefinedStyle("Mozilla", &Styles[1]));
4251  EXPECT_TRUE(getPredefinedStyle("moZILla", &Styles[2]));
4252  EXPECT_TRUE(allStylesEqual(Styles));
4253
4254  EXPECT_FALSE(getPredefinedStyle("qwerty", &Styles[0]));
4255}
4256
4257TEST_F(FormatTest, ParsesConfiguration) {
4258  FormatStyle Style = {};
4259#define CHECK_PARSE(TEXT, FIELD, VALUE)                                        \
4260  EXPECT_NE(VALUE, Style.FIELD);                                               \
4261  EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value());                      \
4262  EXPECT_EQ(VALUE, Style.FIELD)
4263
4264#define CHECK_PARSE_BOOL(FIELD)                                                \
4265  Style.FIELD = false;                                                         \
4266  EXPECT_EQ(0, parseConfiguration(#FIELD ": true", &Style).value());           \
4267  EXPECT_TRUE(Style.FIELD);                                                    \
4268  EXPECT_EQ(0, parseConfiguration(#FIELD ": false", &Style).value());          \
4269  EXPECT_FALSE(Style.FIELD);
4270
4271  CHECK_PARSE_BOOL(AlignEscapedNewlinesLeft);
4272  CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine);
4273  CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine);
4274  CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine);
4275  CHECK_PARSE_BOOL(BinPackParameters);
4276  CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine);
4277  CHECK_PARSE_BOOL(DerivePointerBinding);
4278  CHECK_PARSE_BOOL(IndentCaseLabels);
4279  CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList);
4280  CHECK_PARSE_BOOL(PointerBindsToType);
4281  CHECK_PARSE_BOOL(UseTab);
4282
4283  CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234);
4284  CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u);
4285  CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u);
4286  CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u);
4287  CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234",
4288              PenaltyReturnTypeOnItsOwnLine, 1234u);
4289  CHECK_PARSE("SpacesBeforeTrailingComments: 1234",
4290              SpacesBeforeTrailingComments, 1234u);
4291  CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u);
4292
4293  Style.Standard = FormatStyle::LS_Auto;
4294  CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03);
4295  CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11);
4296  CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto);
4297
4298  Style.ColumnLimit = 123;
4299  FormatStyle BaseStyle = getLLVMStyle();
4300  CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit);
4301  CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u);
4302
4303  Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup;
4304  CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces,
4305              FormatStyle::BS_Attach);
4306  CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces,
4307              FormatStyle::BS_Linux);
4308  CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces,
4309              FormatStyle::BS_Stroustrup);
4310
4311#undef CHECK_PARSE
4312#undef CHECK_PARSE_BOOL
4313}
4314
4315TEST_F(FormatTest, ConfigurationRoundTripTest) {
4316  FormatStyle Style = getLLVMStyle();
4317  std::string YAML = configurationAsText(Style);
4318  FormatStyle ParsedStyle = {};
4319  EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value());
4320  EXPECT_EQ(Style, ParsedStyle);
4321}
4322
4323} // end namespace tooling
4324} // end namespace clang
4325