FormatTest.cpp revision faab0d35da240bde26a6281ed1cfa14c44585a5a 
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 "../Tooling/RewriterTestContext.h"
14#include "clang/Lex/Lexer.h"
15#include "llvm/Support/Debug.h"
16#include "gtest/gtest.h"
17
18namespace clang {
19namespace format {
20
21class FormatTest : public ::testing::Test {
22protected:
23  std::string format(llvm::StringRef Code, unsigned Offset, unsigned Length,
24                     const FormatStyle &Style) {
25    DEBUG(llvm::errs() << "---\n");
26    RewriterTestContext Context;
27    FileID ID = Context.createInMemoryFile("input.cc", Code);
28    SourceLocation Start =
29        Context.Sources.getLocForStartOfFile(ID).getLocWithOffset(Offset);
30    std::vector<CharSourceRange> Ranges(
31        1,
32        CharSourceRange::getCharRange(Start, Start.getLocWithOffset(Length)));
33    Lexer Lex(ID, Context.Sources.getBuffer(ID), Context.Sources,
34              getFormattingLangOpts());
35    tooling::Replacements Replace = reformat(
36        Style, Lex, Context.Sources, Ranges, new IgnoringDiagConsumer());
37    ReplacementCount = Replace.size();
38    EXPECT_TRUE(applyAllReplacements(Replace, Context.Rewrite));
39    DEBUG(llvm::errs() << "\n" << Context.getRewrittenText(ID) << "\n\n");
40    return Context.getRewrittenText(ID);
41  }
42
43  std::string
44  format(llvm::StringRef Code, const FormatStyle &Style = getLLVMStyle()) {
45    return format(Code, 0, Code.size(), Style);
46  }
47
48  std::string messUp(llvm::StringRef Code) {
49    std::string MessedUp(Code.str());
50    bool InComment = false;
51    bool InPreprocessorDirective = false;
52    bool JustReplacedNewline = false;
53    for (unsigned i = 0, e = MessedUp.size() - 1; i != e; ++i) {
54      if (MessedUp[i] == '/' && MessedUp[i + 1] == '/') {
55        if (JustReplacedNewline)
56          MessedUp[i - 1] = '\n';
57        InComment = true;
58      } else if (MessedUp[i] == '#' && (JustReplacedNewline || i == 0)) {
59        if (i != 0)
60          MessedUp[i - 1] = '\n';
61        InPreprocessorDirective = true;
62      } else if (MessedUp[i] == '\\' && MessedUp[i + 1] == '\n') {
63        MessedUp[i] = ' ';
64        MessedUp[i + 1] = ' ';
65      } else if (MessedUp[i] == '\n') {
66        if (InComment) {
67          InComment = false;
68        } else if (InPreprocessorDirective) {
69          InPreprocessorDirective = false;
70        } else {
71          JustReplacedNewline = true;
72          MessedUp[i] = ' ';
73        }
74      } else if (MessedUp[i] != ' ') {
75        JustReplacedNewline = false;
76      }
77    }
78    return MessedUp;
79  }
80
81  FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) {
82    FormatStyle Style = getLLVMStyle();
83    Style.ColumnLimit = ColumnLimit;
84    return Style;
85  }
86
87  FormatStyle getGoogleStyleWithColumns(unsigned ColumnLimit) {
88    FormatStyle Style = getGoogleStyle();
89    Style.ColumnLimit = ColumnLimit;
90    return Style;
91  }
92
93  void verifyFormat(llvm::StringRef Code,
94                    const FormatStyle &Style = getLLVMStyle()) {
95    EXPECT_EQ(Code.str(), format(messUp(Code), Style));
96  }
97
98  void verifyGoogleFormat(llvm::StringRef Code) {
99    verifyFormat(Code, getGoogleStyle());
100  }
101
102  void verifyIndependentOfContext(llvm::StringRef text) {
103    verifyFormat(text);
104    verifyFormat(llvm::Twine("void f() { " + text + " }").str());
105  }
106
107  int ReplacementCount;
108};
109
110TEST_F(FormatTest, MessUp) {
111  EXPECT_EQ("1 2 3", messUp("1 2 3"));
112  EXPECT_EQ("1 2 3\n", messUp("1\n2\n3\n"));
113  EXPECT_EQ("a\n//b\nc", messUp("a\n//b\nc"));
114  EXPECT_EQ("a\n#b\nc", messUp("a\n#b\nc"));
115  EXPECT_EQ("a\n#b  c  d\ne", messUp("a\n#b\\\nc\\\nd\ne"));
116}
117
118//===----------------------------------------------------------------------===//
119// Basic function tests.
120//===----------------------------------------------------------------------===//
121
122TEST_F(FormatTest, DoesNotChangeCorrectlyFormatedCode) {
123  EXPECT_EQ(";", format(";"));
124}
125
126TEST_F(FormatTest, FormatsGlobalStatementsAt0) {
127  EXPECT_EQ("int i;", format("  int i;"));
128  EXPECT_EQ("\nint i;", format(" \n\t \r  int i;"));
129  EXPECT_EQ("int i;\nint j;", format("    int i; int j;"));
130  EXPECT_EQ("int i;\nint j;", format("    int i;\n  int j;"));
131}
132
133TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) {
134  EXPECT_EQ("int i;", format("int\ni;"));
135}
136
137TEST_F(FormatTest, FormatsNestedBlockStatements) {
138  EXPECT_EQ("{\n  {\n    {}\n  }\n}", format("{{{}}}"));
139}
140
141TEST_F(FormatTest, FormatsNestedCall) {
142  verifyFormat("Method(f1, f2(f3));");
143  verifyFormat("Method(f1(f2, f3()));");
144  verifyFormat("Method(f1(f2, (f3())));");
145}
146
147TEST_F(FormatTest, NestedNameSpecifiers) {
148  verifyFormat("vector< ::Type> v;");
149  verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())");
150}
151
152TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) {
153  EXPECT_EQ("if (a) {\n"
154            "  f();\n"
155            "}",
156            format("if(a){f();}"));
157  EXPECT_EQ(4, ReplacementCount);
158  EXPECT_EQ("if (a) {\n"
159            "  f();\n"
160            "}",
161            format("if (a) {\n"
162                   "  f();\n"
163                   "}"));
164  EXPECT_EQ(0, ReplacementCount);
165}
166
167TEST_F(FormatTest, RemovesTrailingWhitespaceOfFormattedLine) {
168  EXPECT_EQ("int a;\nint b;", format("int a; \nint b;", 0, 0, getLLVMStyle()));
169}
170
171TEST_F(FormatTest, ReformatsMovedLines) {
172  EXPECT_EQ(
173      "template <typename T> T *getFETokenInfo() const {\n"
174      "  return static_cast<T *>(FETokenInfo);\n"
175      "}\n"
176      "  int a; // <- Should not be formatted",
177      format(
178          "template<typename T>\n"
179          "T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }\n"
180          "  int a; // <- Should not be formatted",
181          9, 5, getLLVMStyle()));
182}
183
184//===----------------------------------------------------------------------===//
185// Tests for control statements.
186//===----------------------------------------------------------------------===//
187
188TEST_F(FormatTest, FormatIfWithoutCompountStatement) {
189  verifyFormat("if (true)\n  f();\ng();");
190  verifyFormat("if (a)\n  if (b)\n    if (c)\n      g();\nh();");
191  verifyFormat("if (a)\n  if (b) {\n    f();\n  }\ng();");
192
193  FormatStyle AllowsMergedIf = getGoogleStyle();
194  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
195  verifyFormat("if (a)\n"
196               "  // comment\n"
197               "  f();",
198               AllowsMergedIf);
199
200  verifyFormat("if (a)  // Can't merge this\n"
201               "  f();\n",
202               AllowsMergedIf);
203  verifyFormat("if (a) /* still don't merge */\n"
204               "  f();",
205               AllowsMergedIf);
206  verifyFormat("if (a) {  // Never merge this\n"
207               "  f();\n"
208               "}",
209               AllowsMergedIf);
210  verifyFormat("if (a) { /* Never merge this */\n"
211               "  f();\n"
212               "}",
213               AllowsMergedIf);
214
215  AllowsMergedIf.ColumnLimit = 14;
216  verifyFormat("if (a) return;", AllowsMergedIf);
217  verifyFormat("if (aaaaaaaaa)\n"
218               "  return;",
219               AllowsMergedIf);
220
221  AllowsMergedIf.ColumnLimit = 13;
222  verifyFormat("if (a)\n  return;", AllowsMergedIf);
223}
224
225TEST_F(FormatTest, ParseIfElse) {
226  verifyFormat("if (true)\n"
227               "  if (true)\n"
228               "    if (true)\n"
229               "      f();\n"
230               "    else\n"
231               "      g();\n"
232               "  else\n"
233               "    h();\n"
234               "else\n"
235               "  i();");
236  verifyFormat("if (true)\n"
237               "  if (true)\n"
238               "    if (true) {\n"
239               "      if (true)\n"
240               "        f();\n"
241               "    } else {\n"
242               "      g();\n"
243               "    }\n"
244               "  else\n"
245               "    h();\n"
246               "else {\n"
247               "  i();\n"
248               "}");
249}
250
251TEST_F(FormatTest, ElseIf) {
252  verifyFormat("if (a) {\n} else if (b) {\n}");
253  verifyFormat("if (a)\n"
254               "  f();\n"
255               "else if (b)\n"
256               "  g();\n"
257               "else\n"
258               "  h();");
259}
260
261TEST_F(FormatTest, FormatsForLoop) {
262  verifyFormat(
263      "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n"
264      "     ++VeryVeryLongLoopVariable)\n"
265      "  ;");
266  verifyFormat("for (;;)\n"
267               "  f();");
268  verifyFormat("for (;;) {\n}");
269  verifyFormat("for (;;) {\n"
270               "  f();\n"
271               "}");
272
273  verifyFormat(
274      "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
275      "                                          E = UnwrappedLines.end();\n"
276      "     I != E; ++I) {\n}");
277
278  verifyFormat(
279      "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n"
280      "     ++IIIII) {\n}");
281  verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
282               "         aaaaaaaaaaa = aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n"
283               "     aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}");
284  verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n"
285               "         I = FD->getDeclsInPrototypeScope().begin(),\n"
286               "         E = FD->getDeclsInPrototypeScope().end();\n"
287               "     I != E; ++I) {\n}");
288
289  // FIXME: Not sure whether we want extra identation in line 3 here:
290  verifyFormat(
291      "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n"
292      "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n"
293      "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
294      "         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n"
295      "     ++aaaaaaaaaaa) {\n}");
296  verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n"
297               "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
298               "}");
299
300  FormatStyle NoBinPacking = getLLVMStyle();
301  NoBinPacking.BinPackParameters = false;
302  verifyFormat("for (int aaaaaaaaaaa = 1;\n"
303               "     aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n"
304               "                                           aaaaaaaaaaaaaaaa,\n"
305               "                                           aaaaaaaaaaaaaaaa,\n"
306               "                                           aaaaaaaaaaaaaaaa);\n"
307               "     aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n"
308               "}",
309               NoBinPacking);
310  verifyFormat(
311      "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n"
312      "                                          E = UnwrappedLines.end();\n"
313      "     I != E;\n"
314      "     ++I) {\n}",
315      NoBinPacking);
316}
317
318TEST_F(FormatTest, RangeBasedForLoops) {
319  verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n"
320               "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
321  verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n"
322               "     aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}");
323  verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n"
324               "     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
325}
326
327TEST_F(FormatTest, FormatsWhileLoop) {
328  verifyFormat("while (true) {\n}");
329  verifyFormat("while (true)\n"
330               "  f();");
331  verifyFormat("while () {\n}");
332  verifyFormat("while () {\n"
333               "  f();\n"
334               "}");
335}
336
337TEST_F(FormatTest, FormatsDoWhile) {
338  verifyFormat("do {\n"
339               "  do_something();\n"
340               "} while (something());");
341  verifyFormat("do\n"
342               "  do_something();\n"
343               "while (something());");
344}
345
346TEST_F(FormatTest, FormatsSwitchStatement) {
347  verifyFormat("switch (x) {\n"
348               "case 1:\n"
349               "  f();\n"
350               "  break;\n"
351               "case kFoo:\n"
352               "case ns::kBar:\n"
353               "case kBaz:\n"
354               "  break;\n"
355               "default:\n"
356               "  g();\n"
357               "  break;\n"
358               "}");
359  verifyFormat("switch (x) {\n"
360               "case 1: {\n"
361               "  f();\n"
362               "  break;\n"
363               "}\n"
364               "}");
365  verifyFormat("switch (x) {\n"
366               "case 1: {\n"
367               "  f();\n"
368               "  {\n"
369               "    g();\n"
370               "    h();\n"
371               "  }\n"
372               "  break;\n"
373               "}\n"
374               "}");
375  verifyFormat("switch (x) {\n"
376               "case 1: {\n"
377               "  f();\n"
378               "  if (foo) {\n"
379               "    g();\n"
380               "    h();\n"
381               "  }\n"
382               "  break;\n"
383               "}\n"
384               "}");
385  verifyFormat("switch (x) {\n"
386               "case 1: {\n"
387               "  f();\n"
388               "  g();\n"
389               "} break;\n"
390               "}");
391  verifyFormat("switch (test)\n"
392               "  ;");
393
394  verifyGoogleFormat("switch (x) {\n"
395                     "  case 1:\n"
396                     "    f();\n"
397                     "    break;\n"
398                     "  case kFoo:\n"
399                     "  case ns::kBar:\n"
400                     "  case kBaz:\n"
401                     "    break;\n"
402                     "  default:\n"
403                     "    g();\n"
404                     "    break;\n"
405                     "}");
406  verifyGoogleFormat("switch (x) {\n"
407                     "  case 1: {\n"
408                     "    f();\n"
409                     "    break;\n"
410                     "  }\n"
411                     "}");
412  verifyGoogleFormat("switch (test)\n"
413                     "    ;");
414}
415
416TEST_F(FormatTest, FormatsLabels) {
417  verifyFormat("void f() {\n"
418               "  some_code();\n"
419               "test_label:\n"
420               "  some_other_code();\n"
421               "  {\n"
422               "    some_more_code();\n"
423               "  another_label:\n"
424               "    some_more_code();\n"
425               "  }\n"
426               "}");
427  verifyFormat("some_code();\n"
428               "test_label:\n"
429               "some_other_code();");
430}
431
432//===----------------------------------------------------------------------===//
433// Tests for comments.
434//===----------------------------------------------------------------------===//
435
436TEST_F(FormatTest, UnderstandsSingleLineComments) {
437  verifyFormat("// line 1\n"
438               "// line 2\n"
439               "void f() {}\n");
440
441  verifyFormat("void f() {\n"
442               "  // Doesn't do anything\n"
443               "}");
444  verifyFormat("void f(int i,  // some comment (probably for i)\n"
445               "       int j,  // some comment (probably for j)\n"
446               "       int k); // some comment (probably for k)");
447  verifyFormat("void f(int i,\n"
448               "       // some comment (probably for j)\n"
449               "       int j,\n"
450               "       // some comment (probably for k)\n"
451               "       int k);");
452
453  verifyFormat("int i    // This is a fancy variable\n"
454               "    = 5; // with nicely aligned comment.");
455
456  verifyFormat("// Leading comment.\n"
457               "int a; // Trailing comment.");
458  verifyFormat("int a; // Trailing comment\n"
459               "       // on 2\n"
460               "       // or 3 lines.\n"
461               "int b;");
462  verifyFormat("int a; // Trailing comment\n"
463               "\n"
464               "// Leading comment.\n"
465               "int b;");
466  verifyFormat("int a;    // Comment.\n"
467               "          // More details.\n"
468               "int bbbb; // Another comment.");
469  verifyFormat(
470      "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
471      "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;   // comment\n"
472      "int cccccccccccccccccccccccccccccc;       // comment\n"
473      "int ddd;                     // looooooooooooooooooooooooong comment\n"
474      "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n"
475      "int bbbbbbbbbbbbbbbbbbbbb;   // comment\n"
476      "int ccccccccccccccccccc;     // comment");
477
478  verifyFormat("#include \"a\"     // comment\n"
479               "#include \"a/b/c\" // comment");
480  verifyFormat("#include <a>     // comment\n"
481               "#include <a/b/c> // comment");
482
483  verifyFormat("enum E {\n"
484               "  // comment\n"
485               "  VAL_A, // comment\n"
486               "  VAL_B\n"
487               "};");
488
489  verifyFormat(
490      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
491      "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment");
492  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
493               "    // Comment inside a statement.\n"
494               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;");
495  verifyFormat(
496      "bool aaaaaaaaaaaaa = // comment\n"
497      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
498      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
499
500  verifyFormat("int aaaa; // aaaaa\n"
501               "int aa;   // aaaaaaa",
502               getLLVMStyleWithColumns(20));
503
504  EXPECT_EQ("void f() { // This does something ..\n"
505            "}\n"
506            "int a; // This is unrelated",
507            format("void f()    {     // This does something ..\n"
508                   "  }\n"
509                   "int   a;     // This is unrelated"));
510  EXPECT_EQ("void f() { // This does something ..\n"
511            "}          // awesome..\n"
512            "\n"
513            "int a; // This is unrelated",
514            format("void f()    { // This does something ..\n"
515                   "      } // awesome..\n"
516                   " \n"
517                   "int a;    // This is unrelated"));
518
519  EXPECT_EQ("int i; // single line trailing comment",
520            format("int i;\\\n// single line trailing comment"));
521
522  verifyGoogleFormat("int a;  // Trailing comment.");
523
524  verifyFormat("someFunction(anotherFunction( // Force break.\n"
525               "    parameter));");
526
527  verifyGoogleFormat("#endif  // HEADER_GUARD");
528
529  verifyFormat("const char *test[] = {\n"
530               "  // A\n"
531               "  \"aaaa\",\n"
532               "  // B\n"
533               "  \"aaaaa\",\n"
534               "};");
535  verifyGoogleFormat(
536      "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
537      "    aaaaaaaaaaaaaaaaaaaaaa);  // 81 cols with this comment");
538}
539
540TEST_F(FormatTest, UnderstandsMultiLineComments) {
541  verifyFormat("f(/*test=*/ true);");
542  EXPECT_EQ(
543      "f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n"
544      "  bbbbbbbbbbbbbbbbbbbbbbbbb);",
545      format("f(aaaaaaaaaaaaaaaaaaaaaaaaa ,  /* Trailing comment for aa... */\n"
546             "  bbbbbbbbbbbbbbbbbbbbbbbbb);"));
547  EXPECT_EQ(
548      "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
549      "  /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);",
550      format("f(aaaaaaaaaaaaaaaaaaaaaaaaa    ,   \n"
551             "/* Leading comment for bb... */   bbbbbbbbbbbbbbbbbbbbbbbbb);"));
552
553  FormatStyle NoBinPacking = getLLVMStyle();
554  NoBinPacking.BinPackParameters = false;
555  verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n"
556               "         /* parameter 2 */ aaaaaa,\n"
557               "         /* parameter 3 */ aaaaaa,\n"
558               "         /* parameter 4 */ aaaaaa);",
559               NoBinPacking);
560}
561
562TEST_F(FormatTest, CommentsInStaticInitializers) {
563  EXPECT_EQ(
564      "static SomeType type = { aaaaaaaaaaaaaaaaaaaa, /* comment */\n"
565      "                         aaaaaaaaaaaaaaaaaaaa /* comment */,\n"
566      "                         /* comment */ aaaaaaaaaaaaaaaaaaaa,\n"
567      "                         aaaaaaaaaaaaaaaaaaaa, // comment\n"
568      "                         aaaaaaaaaaaaaaaaaaaa };",
569      format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa  ,  /* comment */\n"
570             "                   aaaaaaaaaaaaaaaaaaaa   /* comment */ ,\n"
571             "                     /* comment */   aaaaaaaaaaaaaaaaaaaa ,\n"
572             "              aaaaaaaaaaaaaaaaaaaa ,   // comment\n"
573             "                  aaaaaaaaaaaaaaaaaaaa };"));
574  verifyFormat("static SomeType type = { aaaaaaaaaaa, // comment for aa...\n"
575               "                         bbbbbbbbbbb, ccccccccccc };");
576  verifyFormat("static SomeType type = { aaaaaaaaaaa,\n"
577               "                         // comment for bb....\n"
578               "                         bbbbbbbbbbb, ccccccccccc };");
579  verifyGoogleFormat(
580      "static SomeType type = { aaaaaaaaaaa,  // comment for aa...\n"
581      "                         bbbbbbbbbbb, ccccccccccc };");
582  verifyGoogleFormat("static SomeType type = { aaaaaaaaaaa,\n"
583                     "                         // comment for bb....\n"
584                     "                         bbbbbbbbbbb, ccccccccccc };");
585
586  verifyFormat("S s = { { a, b, c },   // Group #1\n"
587               "        { d, e, f },   // Group #2\n"
588               "        { g, h, i } }; // Group #3");
589  verifyFormat("S s = { { // Group #1\n"
590               "          a, b, c },\n"
591               "        { // Group #2\n"
592               "          d, e, f },\n"
593               "        { // Group #3\n"
594               "          g, h, i } };");
595
596  EXPECT_EQ("S s = {\n"
597            "  // Some comment\n"
598            "  a,\n"
599            "\n"
600            "  // Comment after empty line\n"
601            "  b\n"
602            "}",
603            format("S s =    {\n"
604                   "      // Some comment\n"
605                   "  a,\n"
606                   "  \n"
607                   "     // Comment after empty line\n"
608                   "      b\n"
609                   "}"));
610  EXPECT_EQ("S s = { a, b };", format("S s = {\n"
611                                      "  a,\n"
612                                      "\n"
613                                      "  b\n"
614                                      "};"));
615}
616
617//===----------------------------------------------------------------------===//
618// Tests for classes, namespaces, etc.
619//===----------------------------------------------------------------------===//
620
621TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) {
622  verifyFormat("class A {\n};");
623}
624
625TEST_F(FormatTest, UnderstandsAccessSpecifiers) {
626  verifyFormat("class A {\n"
627               "public:\n"
628               "protected:\n"
629               "private:\n"
630               "  void f() {}\n"
631               "};");
632  verifyGoogleFormat("class A {\n"
633                     " public:\n"
634                     " protected:\n"
635                     " private:\n"
636                     "  void f() {}\n"
637                     "};");
638}
639
640TEST_F(FormatTest, FormatsDerivedClass) {
641  verifyFormat("class A : public B {\n};");
642  verifyFormat("class A : public ::B {\n};");
643
644  verifyFormat(
645      "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
646      "                             public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {\n"
647      "};\n");
648  verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA :\n"
649               "    public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n"
650               "    public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {\n"
651               "};\n");
652  verifyFormat(
653      "class A : public B, public C, public D, public E, public F, public G {\n"
654      "};");
655  verifyFormat("class AAAAAAAAAAAA : public B,\n"
656               "                     public C,\n"
657               "                     public D,\n"
658               "                     public E,\n"
659               "                     public F,\n"
660               "                     public G {\n"
661               "};");
662}
663
664TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) {
665  verifyFormat("class A {\n} a, b;");
666  verifyFormat("struct A {\n} a, b;");
667  verifyFormat("union A {\n} a;");
668}
669
670TEST_F(FormatTest, FormatsEnum) {
671  verifyFormat("enum {\n"
672               "  Zero,\n"
673               "  One = 1,\n"
674               "  Two = One + 1,\n"
675               "  Three = (One + Two),\n"
676               "  Four = (Zero && (One ^ Two)) | (One << Two),\n"
677               "  Five = (One, Two, Three, Four, 5)\n"
678               "};");
679  verifyFormat("enum Enum {\n"
680               "};");
681  verifyFormat("enum {\n"
682               "};");
683  verifyFormat("enum X E {\n} d;");
684  verifyFormat("enum __attribute__((...)) E {\n} d;");
685  verifyFormat("enum __declspec__((...)) E {\n} d;");
686  verifyFormat("enum X f() {\n  a();\n  return 42;\n}");
687}
688
689TEST_F(FormatTest, FormatsBitfields) {
690  verifyFormat("struct Bitfields {\n"
691               "  unsigned sClass : 8;\n"
692               "  unsigned ValueKind : 2;\n"
693               "};");
694}
695
696TEST_F(FormatTest, FormatsNamespaces) {
697  verifyFormat("namespace some_namespace {\n"
698               "class A {\n};\n"
699               "void f() { f(); }\n"
700               "}");
701  verifyFormat("namespace {\n"
702               "class A {\n};\n"
703               "void f() { f(); }\n"
704               "}");
705  verifyFormat("inline namespace X {\n"
706               "class A {\n};\n"
707               "void f() { f(); }\n"
708               "}");
709  verifyFormat("using namespace some_namespace;\n"
710               "class A {\n};\n"
711               "void f() { f(); }");
712
713  // This code is more common than we thought; if we
714  // layout this correctly the semicolon will go into
715  // its own line, which is undesireable.
716  verifyFormat("namespace {\n};");
717  verifyFormat("namespace {\n"
718               "class A {\n"
719               "};\n"
720               "};");
721}
722
723TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); }
724
725TEST_F(FormatTest, FormatTryCatch) {
726  // FIXME: Handle try-catch explicitly in the UnwrappedLineParser, then we'll
727  // also not create single-line-blocks.
728  verifyFormat("try {\n"
729               "  throw a * b;\n"
730               "}\n"
731               "catch (int a) {\n"
732               "  // Do nothing.\n"
733               "}\n"
734               "catch (...) {\n"
735               "  exit(42);\n"
736               "}");
737
738  // Function-level try statements.
739  verifyFormat("int f() try { return 4; }\n"
740               "catch (...) {\n"
741               "  return 5;\n"
742               "}");
743  verifyFormat("class A {\n"
744               "  int a;\n"
745               "  A() try : a(0) {}\n"
746               "  catch (...) {\n"
747               "    throw;\n"
748               "  }\n"
749               "};\n");
750}
751
752TEST_F(FormatTest, FormatObjCTryCatch) {
753  verifyFormat("@try {\n"
754               "  f();\n"
755               "}\n"
756               "@catch (NSException e) {\n"
757               "  @throw;\n"
758               "}\n"
759               "@finally {\n"
760               "  exit(42);\n"
761               "}");
762}
763
764TEST_F(FormatTest, StaticInitializers) {
765  verifyFormat("static SomeClass SC = { 1, 'a' };");
766
767  // FIXME: Format like enums if the static initializer does not fit on a line.
768  verifyFormat(
769      "static SomeClass WithALoooooooooooooooooooongName = {\n"
770      "  100000000, \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
771      "};");
772
773  verifyFormat(
774      "static SomeClass = { a, b, c, d, e, f, g, h, i, j,\n"
775      "                     looooooooooooooooooooooooooooooooooongname,\n"
776      "                     looooooooooooooooooooooooooooooong };");
777  // Allow bin-packing in static initializers as this would often lead to
778  // terrible results, e.g.:
779  verifyGoogleFormat(
780      "static SomeClass = { a, b, c, d, e, f, g, h, i, j,\n"
781      "                     looooooooooooooooooooooooooooooooooongname,\n"
782      "                     looooooooooooooooooooooooooooooong };");
783}
784
785TEST_F(FormatTest, NestedStaticInitializers) {
786  verifyFormat("static A x = { { {} } };\n");
787  verifyFormat("static A x = { { { init1, init2, init3, init4 },\n"
788               "                 { init1, init2, init3, init4 } } };");
789
790  verifyFormat("somes Status::global_reps[3] = {\n"
791               "  { kGlobalRef, OK_CODE, NULL, NULL, NULL },\n"
792               "  { kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL },\n"
793               "  { kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL }\n"
794               "};");
795  verifyGoogleFormat("somes Status::global_reps[3] = {\n"
796                     "  { kGlobalRef, OK_CODE, NULL, NULL, NULL },\n"
797                     "  { kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL },\n"
798                     "  { kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL }\n"
799                     "};");
800  verifyFormat(
801      "CGRect cg_rect = { { rect.fLeft, rect.fTop },\n"
802      "                   { rect.fRight - rect.fLeft, rect.fBottom - rect.fTop"
803      " } };");
804
805  verifyFormat(
806      "SomeArrayOfSomeType a = { { { 1, 2, 3 }, { 1, 2, 3 },\n"
807      "                            { 111111111111111111111111111111,\n"
808      "                              222222222222222222222222222222,\n"
809      "                              333333333333333333333333333333 },\n"
810      "                            { 1, 2, 3 }, { 1, 2, 3 } } };");
811  verifyFormat(
812      "SomeArrayOfSomeType a = { { { 1, 2, 3 } }, { { 1, 2, 3 } },\n"
813      "                          { { 111111111111111111111111111111,\n"
814      "                              222222222222222222222222222222,\n"
815      "                              333333333333333333333333333333 } },\n"
816      "                          { { 1, 2, 3 } }, { { 1, 2, 3 } } };");
817
818  // FIXME: We might at some point want to handle this similar to parameter
819  // lists, where we have an option to put each on a single line.
820  verifyFormat(
821      "struct {\n"
822      "  unsigned bit;\n"
823      "  const char *const name;\n"
824      "} kBitsToOs[] = { { kOsMac, \"Mac\" }, { kOsWin, \"Windows\" },\n"
825      "                  { kOsLinux, \"Linux\" }, { kOsCrOS, \"Chrome OS\" } };");
826}
827
828TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) {
829  verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro("
830               "                      \\\n"
831               "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)");
832}
833
834TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) {
835  verifyFormat("virtual void write(ELFWriter *writerrr,\n"
836               "                   OwningPtr<FileOutputBuffer> &buffer) = 0;");
837}
838
839TEST_F(FormatTest, LayoutUnknownPPDirective) {
840  EXPECT_EQ("#123 \"A string literal\"",
841            format("   #     123    \"A string literal\""));
842  EXPECT_EQ("#;", format("#;"));
843  verifyFormat("#\n;\n;\n;");
844}
845
846TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) {
847  EXPECT_EQ("#line 42 \"test\"\n",
848            format("#  \\\n  line  \\\n  42  \\\n  \"test\"\n"));
849  EXPECT_EQ("#define A B\n", format("#  \\\n define  \\\n    A  \\\n       B\n",
850                                    getLLVMStyleWithColumns(12)));
851}
852
853TEST_F(FormatTest, EndOfFileEndsPPDirective) {
854  EXPECT_EQ("#line 42 \"test\"",
855            format("#  \\\n  line  \\\n  42  \\\n  \"test\""));
856  EXPECT_EQ("#define A B", format("#  \\\n define  \\\n    A  \\\n       B"));
857}
858
859TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) {
860  // If the macro fits in one line, we still do not get the full
861  // line, as only the next line decides whether we need an escaped newline and
862  // thus use the last column.
863  verifyFormat("#define A(B)", getLLVMStyleWithColumns(13));
864
865  verifyFormat("#define A( \\\n    B)", getLLVMStyleWithColumns(12));
866  verifyFormat("#define AA(\\\n    B)", getLLVMStyleWithColumns(12));
867  verifyFormat("#define A( \\\n    A, B)", getLLVMStyleWithColumns(12));
868
869  verifyFormat("#define A A\n#define A A");
870  verifyFormat("#define A(X) A\n#define A A");
871
872  verifyFormat("#define Something Other", getLLVMStyleWithColumns(24));
873  verifyFormat("#define Something     \\\n"
874               "  Other",
875               getLLVMStyleWithColumns(23));
876}
877
878TEST_F(FormatTest, HandlePreprocessorDirectiveContext) {
879  EXPECT_EQ("// some comment\n"
880            "#include \"a.h\"\n"
881            "#define A(A,\\\n"
882            "          B)\n"
883            "#include \"b.h\"\n"
884            "// some comment\n",
885            format("  // some comment\n"
886                   "  #include \"a.h\"\n"
887                   "#define A(A,\\\n"
888                   "    B)\n"
889                   "    #include \"b.h\"\n"
890                   " // some comment\n",
891                   getLLVMStyleWithColumns(13)));
892}
893
894TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); }
895
896TEST_F(FormatTest, LayoutCodeInMacroDefinitions) {
897  EXPECT_EQ("#define A    \\\n"
898            "  c;         \\\n"
899            "  e;\n"
900            "f;",
901            format("#define A c; e;\n"
902                   "f;",
903                   getLLVMStyleWithColumns(14)));
904}
905
906TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); }
907
908TEST_F(FormatTest, LayoutSingleUnwrappedLineInMacro) {
909  EXPECT_EQ("# define A\\\n  b;",
910            format("# define A b;", 11, 2, getLLVMStyleWithColumns(11)));
911}
912
913TEST_F(FormatTest, MacroDefinitionInsideStatement) {
914  EXPECT_EQ("int x,\n"
915            "#define A\n"
916            "    y;",
917            format("int x,\n#define A\ny;"));
918}
919
920TEST_F(FormatTest, HashInMacroDefinition) {
921  verifyFormat("#define A \\\n  b #c;", getLLVMStyleWithColumns(11));
922  verifyFormat("#define A \\\n"
923               "  {       \\\n"
924               "    f(#c);\\\n"
925               "  }",
926               getLLVMStyleWithColumns(11));
927
928  verifyFormat("#define A(X)         \\\n"
929               "  void function##X()",
930               getLLVMStyleWithColumns(22));
931
932  verifyFormat("#define A(a, b, c)   \\\n"
933               "  void a##b##c()",
934               getLLVMStyleWithColumns(22));
935
936  verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
937}
938
939TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
940  verifyFormat("#define A (1)");
941}
942
943TEST_F(FormatTest, EmptyLinesInMacroDefinitions) {
944  EXPECT_EQ("#define A b;", format("#define A \\\n"
945                                   "          \\\n"
946                                   "  b;",
947                                   getLLVMStyleWithColumns(25)));
948  EXPECT_EQ("#define A \\\n"
949            "          \\\n"
950            "  a;      \\\n"
951            "  b;",
952            format("#define A \\\n"
953                   "          \\\n"
954                   "  a;      \\\n"
955                   "  b;",
956                   getLLVMStyleWithColumns(11)));
957  EXPECT_EQ("#define A \\\n"
958            "  a;      \\\n"
959            "          \\\n"
960            "  b;",
961            format("#define A \\\n"
962                   "  a;      \\\n"
963                   "          \\\n"
964                   "  b;",
965                   getLLVMStyleWithColumns(11)));
966}
967
968TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) {
969  // FIXME: Improve formatting of case labels in macros.
970  verifyFormat("#define SOMECASES  \\\n"
971               "case 1:            \\\n"
972               "  case 2\n",
973               getLLVMStyleWithColumns(20));
974
975  verifyFormat("#define A template <typename T>");
976  verifyFormat("#define STR(x) #x\n"
977               "f(STR(this_is_a_string_literal{));");
978}
979
980TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) {
981  EXPECT_EQ("{\n  {\n#define A\n  }\n}", format("{{\n#define A\n}}"));
982}
983
984TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) {
985  verifyFormat("{\n  { a #c; }\n}");
986}
987
988TEST_F(FormatTest, FormatUnbalancedStructuralElements) {
989  EXPECT_EQ("#define A \\\n  {       \\\n    {\nint i;",
990            format("#define A { {\nint i;", getLLVMStyleWithColumns(11)));
991  EXPECT_EQ("#define A \\\n  }       \\\n  }\nint i;",
992            format("#define A } }\nint i;", getLLVMStyleWithColumns(11)));
993}
994
995TEST_F(FormatTest, EscapedNewlineAtStartOfTokenInMacroDefinition) {
996  EXPECT_EQ(
997      "#define A \\\n  int i;  \\\n  int j;",
998      format("#define A \\\nint i;\\\n  int j;", getLLVMStyleWithColumns(11)));
999}
1000
1001TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) {
1002  verifyFormat("#define A \\\n"
1003               "  int v(  \\\n"
1004               "      a); \\\n"
1005               "  int i;",
1006               getLLVMStyleWithColumns(11));
1007}
1008
1009TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) {
1010  EXPECT_EQ(
1011      "#define ALooooooooooooooooooooooooooooooooooooooongMacro("
1012      "                      \\\n"
1013      "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1014      "\n"
1015      "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1016      "    aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n",
1017      format("  #define   ALooooooooooooooooooooooooooooooooooooooongMacro("
1018             "\\\n"
1019             "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1020             "  \n"
1021             "   AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1022             "  aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n"));
1023}
1024
1025TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) {
1026  EXPECT_EQ("int\n"
1027            "#define A\n"
1028            "    a;",
1029            format("int\n#define A\na;"));
1030  verifyFormat("functionCallTo(\n"
1031               "    someOtherFunction(\n"
1032               "        withSomeParameters, whichInSequence,\n"
1033               "        areLongerThanALine(andAnotherCall,\n"
1034               "#define A B\n"
1035               "                           withMoreParamters,\n"
1036               "                           whichStronglyInfluenceTheLayout),\n"
1037               "        andMoreParameters),\n"
1038               "    trailing);",
1039               getLLVMStyleWithColumns(69));
1040}
1041
1042TEST_F(FormatTest, LayoutBlockInsideParens) {
1043  EXPECT_EQ("functionCall({\n"
1044            "  int i;\n"
1045            "});",
1046            format(" functionCall ( {int i;} );"));
1047}
1048
1049TEST_F(FormatTest, LayoutBlockInsideStatement) {
1050  EXPECT_EQ("SOME_MACRO { int i; }\n"
1051            "int i;",
1052            format("  SOME_MACRO  {int i;}  int i;"));
1053}
1054
1055TEST_F(FormatTest, LayoutNestedBlocks) {
1056  verifyFormat("void AddOsStrings(unsigned bitmask) {\n"
1057               "  struct s {\n"
1058               "    int i;\n"
1059               "  };\n"
1060               "  s kBitsToOs[] = { { 10 } };\n"
1061               "  for (int i = 0; i < 10; ++i)\n"
1062               "    return;\n"
1063               "}");
1064}
1065
1066TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
1067  EXPECT_EQ("{}", format("{}"));
1068
1069  // Negative test for enum.
1070  verifyFormat("enum E {\n};");
1071
1072  // Note that when there's a missing ';', we still join...
1073  verifyFormat("enum E {}");
1074}
1075
1076//===----------------------------------------------------------------------===//
1077// Line break tests.
1078//===----------------------------------------------------------------------===//
1079
1080TEST_F(FormatTest, FormatsFunctionDefinition) {
1081  verifyFormat("void f(int a, int b, int c, int d, int e, int f, int g,"
1082               " int h, int j, int f,\n"
1083               "       int c, int ddddddddddddd) {}");
1084}
1085
1086TEST_F(FormatTest, FormatsAwesomeMethodCall) {
1087  verifyFormat(
1088      "SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
1089      "                       parameter, parameter, parameter)),\n"
1090      "                   SecondLongCall(parameter));");
1091}
1092
1093TEST_F(FormatTest, PreventConfusingIndents) {
1094  verifyFormat(
1095      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1096      "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
1097      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1098      "    aaaaaaaaaaaaaaaaaaaaaaaa);");
1099  verifyFormat(
1100      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[\n"
1101      "    aaaaaaaaaaaaaaaaaaaaaaaa[\n"
1102      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa],\n"
1103      "    aaaaaaaaaaaaaaaaaaaaaaaa];");
1104  verifyFormat(
1105      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n"
1106      "    aaaaaaaaaaaaaaaaaaaaaaaa<\n"
1107      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n"
1108      "    aaaaaaaaaaaaaaaaaaaaaaaa>;");
1109  verifyFormat("int a = bbbb && ccc && fffff(\n"
1110               "#define A Just forcing a new line\n"
1111               "                           ddd);");
1112}
1113
1114TEST_F(FormatTest, ConstructorInitializers) {
1115  verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
1116  verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}",
1117               getLLVMStyleWithColumns(45));
1118  verifyFormat("Constructor()\n"
1119               "    : Inttializer(FitsOnTheLine) {}",
1120               getLLVMStyleWithColumns(44));
1121  verifyFormat("Constructor()\n"
1122               "    : Inttializer(FitsOnTheLine) {}",
1123               getLLVMStyleWithColumns(43));
1124
1125  verifyFormat(
1126      "SomeClass::Constructor()\n"
1127      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
1128
1129  verifyFormat(
1130      "SomeClass::Constructor()\n"
1131      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1132      "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}");
1133  verifyFormat(
1134      "SomeClass::Constructor()\n"
1135      "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1136      "      aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
1137
1138  verifyFormat("Constructor()\n"
1139               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1140               "      aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1141               "                               aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1142               "      aaaaaaaaaaaaaaaaaaaaaaa() {}");
1143
1144  verifyFormat("Constructor()\n"
1145               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1146               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1147
1148  verifyFormat("Constructor(int Parameter = 0)\n"
1149               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
1150               "      aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}");
1151
1152  // Here a line could be saved by splitting the second initializer onto two
1153  // lines, but that is not desireable.
1154  verifyFormat("Constructor()\n"
1155               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
1156               "      aaaaaaaaaaa(aaaaaaaaaaa),\n"
1157               "      aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1158
1159  FormatStyle OnePerLine = getLLVMStyle();
1160  OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
1161  verifyFormat("SomeClass::Constructor()\n"
1162               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1163               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1164               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
1165               OnePerLine);
1166  verifyFormat("SomeClass::Constructor()\n"
1167               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
1168               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1169               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
1170               OnePerLine);
1171  verifyFormat("MyClass::MyClass(int var)\n"
1172               "    : some_var_(var),            // 4 space indent\n"
1173               "      some_other_var_(var + 1) { // lined up\n"
1174               "}",
1175               OnePerLine);
1176
1177  // This test takes VERY long when memoization is broken.
1178  OnePerLine.BinPackParameters = false;
1179  std::string input = "Constructor()\n"
1180                      "    : aaaa(a,\n";
1181  for (unsigned i = 0, e = 80; i != e; ++i) {
1182    input += "           a,\n";
1183  }
1184  input += "           a) {}";
1185  verifyFormat(input, OnePerLine);
1186}
1187
1188TEST_F(FormatTest, BreaksAsHighAsPossible) {
1189  verifyFormat(
1190      "if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
1191      "    (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
1192      "  f();");
1193  verifyFormat("if (Intervals[i].getRange().getFirst() <\n"
1194               "    Intervals[i - 1].getRange().getLast()) {\n}");
1195}
1196
1197TEST_F(FormatTest, BreaksDesireably) {
1198  verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
1199               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
1200               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}");
1201  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1202               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
1203               "}");
1204
1205  verifyFormat(
1206      "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1207      "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1208
1209  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1210               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1211               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1212
1213  verifyFormat(
1214      "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1215      "                            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
1216      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1217      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
1218
1219  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
1220               "    (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1221
1222  verifyFormat(
1223      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
1224      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1225  verifyFormat(
1226      "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1227      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1228  verifyFormat(
1229      "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1230      "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1231
1232  // This test case breaks on an incorrect memoization, i.e. an optimization not
1233  // taking into account the StopAt value.
1234  verifyFormat(
1235      "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
1236      "       aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
1237      "       aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
1238      "       (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1239
1240  verifyFormat("{\n  {\n    {\n"
1241               "      Annotation.SpaceRequiredBefore =\n"
1242               "          Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n"
1243               "          Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n"
1244               "    }\n  }\n}");
1245}
1246
1247TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) {
1248  FormatStyle NoBinPacking = getLLVMStyle();
1249  NoBinPacking.BinPackParameters = false;
1250  verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n"
1251               "  aaaaaaaaaaaaaaaaaaaa,\n"
1252               "  aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);",
1253               NoBinPacking);
1254  verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n"
1255               "        aaaaaaaaaaaaa,\n"
1256               "        aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));",
1257               NoBinPacking);
1258  verifyFormat(
1259      "aaaaaaaa(aaaaaaaaaaaaa,\n"
1260      "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1261      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
1262      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1263      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));",
1264      NoBinPacking);
1265  verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
1266               "    .aaaaaaaaaaaaaaaaaa();",
1267               NoBinPacking);
1268  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1269               "    aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);",
1270               NoBinPacking);
1271
1272  verifyFormat(
1273      "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1274      "             aaaaaaaaaaaa,\n"
1275      "             aaaaaaaaaaaa);",
1276      NoBinPacking);
1277  verifyFormat(
1278      "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n"
1279      "                               ddddddddddddddddddddddddddddd),\n"
1280      "             test);",
1281      NoBinPacking);
1282
1283  verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n"
1284               "            aaaaaaaaaaaaaaaaaaaaaaa,\n"
1285               "            aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;",
1286               NoBinPacking);
1287  verifyFormat("a(\"a\"\n"
1288               "  \"a\",\n"
1289               "  a);");
1290
1291  NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
1292  verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n"
1293               "                aaaaaaaaa,\n"
1294               "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
1295               NoBinPacking);
1296  verifyFormat(
1297      "void f() {\n"
1298      "  aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
1299      "      .aaaaaaa();\n"
1300      "}",
1301      NoBinPacking);
1302}
1303
1304TEST_F(FormatTest, FormatsBuilderPattern) {
1305  verifyFormat(
1306      "return llvm::StringSwitch<Reference::Kind>(name)\n"
1307      "    .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n"
1308      "    .StartsWith(\".eh_frame\", ORDER_EH_FRAME).StartsWith(\".init\", ORDER_INIT)\n"
1309      "    .StartsWith(\".fini\", ORDER_FINI).StartsWith(\".hash\", ORDER_HASH)\n"
1310      "    .Default(ORDER_TEXT);\n");
1311
1312  verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n"
1313               "       aaaaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();");
1314  verifyFormat(
1315      "aaaaaaa->aaaaaaa\n"
1316      "    ->aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1317      "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
1318  verifyFormat(
1319      "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n"
1320      "                                        aaaaaaaaaaaaaa);");
1321  verifyFormat(
1322      "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa = aaaaaa->aaaaaaaaaaaa()\n"
1323      "    ->aaaaaaaaaaaaaaaa(\n"
1324      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1325      "    ->aaaaaaaaaaaaaaaaa();");
1326}
1327
1328TEST_F(FormatTest, DoesNotBreakTrailingAnnotation) {
1329  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1330               "    GUARDED_BY(aaaaaaaaaaaaa);");
1331  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
1332               "    GUARDED_BY(aaaaaaaaaaaaa);");
1333  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
1334               "    GUARDED_BY(aaaaaaaaaaaaa) {}");
1335}
1336
1337TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {
1338  verifyFormat(
1339      "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
1340      "    bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}");
1341  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
1342               "    ccccccccccccccccccccccccc) {\n}");
1343  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
1344               "    ccccccccccccccccccccccccc) {\n}");
1345  verifyFormat(
1346      "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n"
1347      "    ccccccccccccccccccccccccc) {\n}");
1348  verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n"
1349               "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n"
1350               "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n"
1351               "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
1352  verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n"
1353               "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n"
1354               "    aaaaaaaaaaaaaaa != aa) {\n}");
1355}
1356
1357TEST_F(FormatTest, BreaksAfterAssignments) {
1358  verifyFormat(
1359      "unsigned Cost =\n"
1360      "    TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n"
1361      "                        SI->getPointerAddressSpaceee());\n");
1362  verifyFormat(
1363      "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n"
1364      "    Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());");
1365
1366  verifyFormat(
1367      "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa()\n"
1368      "    .aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);");
1369}
1370
1371TEST_F(FormatTest, AlignsAfterAssignments) {
1372  verifyFormat(
1373      "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1374      "             aaaaaaaaaaaaaaaaaaaaaaaaa;");
1375  verifyFormat(
1376      "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1377      "          aaaaaaaaaaaaaaaaaaaaaaaaa;");
1378  verifyFormat(
1379      "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1380      "           aaaaaaaaaaaaaaaaaaaaaaaaa;");
1381  verifyFormat(
1382      "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1383      "              aaaaaaaaaaaaaaaaaaaaaaaaa);");
1384  verifyFormat("double LooooooooooooooooooooooooongResult =\n"
1385               "    aaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaa +\n"
1386               "    aaaaaaaaaaaaaaaaaaaaaaaa;");
1387}
1388
1389TEST_F(FormatTest, AlignsAfterReturn) {
1390  verifyFormat(
1391      "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1392      "       aaaaaaaaaaaaaaaaaaaaaaaaa;");
1393  verifyFormat(
1394      "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1395      "        aaaaaaaaaaaaaaaaaaaaaaaaa);");
1396}
1397
1398TEST_F(FormatTest, BreaksConditionalExpressions) {
1399  verifyFormat(
1400      "aaaa(aaaaaaaaaaaaaaaaaaaa,\n"
1401      "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1402      "                                : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1403  verifyFormat(
1404      "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1405      "                                   : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1406  verifyFormat(
1407      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n"
1408      "                                                    : aaaaaaaaaaaaa);");
1409  verifyFormat(
1410      "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1411      "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaa\n"
1412      "                                    : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1413      "                   aaaaaaaaaaaaa);");
1414  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1415               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1416               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1417               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1418               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1419  verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1420               "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1421               "           ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1422               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1423               "           : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1424               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1425               "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1426
1427  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1428               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1429               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1430  verifyFormat(
1431      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1432      "    ? aaaaaaaaaaaaaaa\n"
1433      "    : aaaaaaaaaaaaaaa;");
1434  verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
1435               "  aaaaaaaaa\n"
1436               "      ? b\n"
1437               "      : c);");
1438  verifyFormat(
1439      "unsigned Indent =\n"
1440      "    format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n"
1441      "                              ? IndentForLevel[TheLine.Level]\n"
1442      "                              : TheLine * 2,\n"
1443      "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
1444      getLLVMStyleWithColumns(70));
1445
1446  FormatStyle NoBinPacking = getLLVMStyle();
1447  NoBinPacking.BinPackParameters = false;
1448  verifyFormat(
1449      "void f() {\n"
1450      "  g(aaa,\n"
1451      "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
1452      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1453      "        ? aaaaaaaaaaaaaaa\n"
1454      "        : aaaaaaaaaaaaaaa);\n"
1455      "}",
1456      NoBinPacking);
1457}
1458
1459TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
1460  verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n"
1461               "     aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();");
1462  verifyFormat("bool a = true, b = false;");
1463
1464  // FIXME: Indentation looks weird.
1465  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1466               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n"
1467               "     bbbbbbbbbbbbbbbbbbbbbbbbb =\n"
1468               "     bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);");
1469  verifyFormat(
1470      "bool aaaaaaaaaaaaaaaaaaaaa =\n"
1471      "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n"
1472      "     d = e && f;");
1473
1474}
1475
1476TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
1477  verifyFormat("arr[foo ? bar : baz];");
1478  verifyFormat("f()[foo ? bar : baz];");
1479  verifyFormat("(a + b)[foo ? bar : baz];");
1480  verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
1481}
1482
1483TEST_F(FormatTest, AlignsStringLiterals) {
1484  verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
1485               "                                      \"short literal\");");
1486  verifyFormat(
1487      "looooooooooooooooooooooooongFunction(\n"
1488      "    \"short literal\"\n"
1489      "    \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
1490  verifyFormat("someFunction(\"Always break between multi-line\"\n"
1491               "             \" string literals\",\n"
1492               "             and, other, parameters);");
1493  EXPECT_EQ("fun + \"1243\" /* comment */\n"
1494            "      \"5678\";",
1495            format("fun + \"1243\" /* comment */\n"
1496                   "      \"5678\";",
1497                   getLLVMStyleWithColumns(28)));
1498  EXPECT_EQ(
1499      "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
1500      "         \"aaaaaaaaaaaaaaaaaaaaa\"\n"
1501      "         \"aaaaaaaaaaaaaaaa\";",
1502      format("aaaaaa ="
1503             "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa "
1504             "aaaaaaaaaaaaaaaaaaaaa\" "
1505             "\"aaaaaaaaaaaaaaaa\";"));
1506  verifyFormat("a = a + \"a\"\n"
1507               "        \"a\"\n"
1508               "        \"a\";");
1509
1510  verifyFormat(
1511      "#define LL_FORMAT \"ll\"\n"
1512      "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n"
1513      "       \"d, ddddddddd: %\" LL_FORMAT \"d\");");
1514}
1515
1516TEST_F(FormatTest, AlignsPipes) {
1517  verifyFormat(
1518      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1519      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1520      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1521  verifyFormat(
1522      "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
1523      "                     << aaaaaaaaaaaaaaaaaaaa;");
1524  verifyFormat(
1525      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1526      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1527  verifyFormat(
1528      "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
1529      "                \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
1530      "             << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
1531  verifyFormat(
1532      "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1533      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1534      "         << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1535
1536  verifyFormat("return out << \"somepacket = {\\n\"\n"
1537               "           << \"  aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n"
1538               "           << \"  bbbb = \" << pkt.bbbb << \"\\n\"\n"
1539               "           << \"  cccccc = \" << pkt.cccccc << \"\\n\"\n"
1540               "           << \"  ddd = [\" << pkt.ddd << \"]\\n\"\n"
1541               "           << \"}\";");
1542
1543  verifyFormat(
1544      "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n"
1545      "             << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n"
1546      "             << \"ccccccccccccccccc = \" << ccccccccccccccccc\n"
1547      "             << \"ddddddddddddddddd = \" << ddddddddddddddddd\n"
1548      "             << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;");
1549}
1550
1551TEST_F(FormatTest, UnderstandsEquals) {
1552  verifyFormat(
1553      "aaaaaaaaaaaaaaaaa =\n"
1554      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1555  verifyFormat(
1556      "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1557      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
1558  verifyFormat(
1559      "if (a) {\n"
1560      "  f();\n"
1561      "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1562      "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
1563      "}");
1564
1565  verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1566               "        100000000 + 10000000) {\n}");
1567}
1568
1569TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
1570  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
1571               "    .looooooooooooooooooooooooooooooooooooooongFunction();");
1572
1573  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
1574               "    ->looooooooooooooooooooooooooooooooooooooongFunction();");
1575
1576  verifyFormat(
1577      "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
1578      "                                                          Parameter2);");
1579
1580  verifyFormat(
1581      "ShortObject->shortFunction(\n"
1582      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
1583      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
1584
1585  verifyFormat("loooooooooooooongFunction(\n"
1586               "    LoooooooooooooongObject->looooooooooooooooongFunction());");
1587
1588  verifyFormat(
1589      "function(LoooooooooooooooooooooooooooooooooooongObject\n"
1590      "             ->loooooooooooooooooooooooooooooooooooooooongFunction());");
1591
1592  verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
1593               "    .WillRepeatedly(Return(SomeValue));");
1594  verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)]\n"
1595               "    .insert(ccccccccccccccccccccccc);");
1596
1597  // Here, it is not necessary to wrap at "." or "->".
1598  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
1599               "    aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
1600  verifyFormat(
1601      "aaaaaaaaaaa->aaaaaaaaa(\n"
1602      "    aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1603      "    aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n");
1604
1605  verifyFormat(
1606      "aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1607      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());");
1608
1609  FormatStyle NoBinPacking = getLLVMStyle();
1610  NoBinPacking.BinPackParameters = false;
1611  verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
1612               "    .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
1613               "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n"
1614               "                         aaaaaaaaaaaaaaaaaaa,\n"
1615               "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
1616               NoBinPacking);
1617}
1618
1619TEST_F(FormatTest, WrapsTemplateDeclarations) {
1620  verifyFormat("template <typename T>\n"
1621               "virtual void loooooooooooongFunction(int Param1, int Param2);");
1622  verifyFormat(
1623      "template <typename T>\n"
1624      "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;");
1625  verifyFormat("template <typename T>\n"
1626               "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n"
1627               "       int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);");
1628  verifyFormat(
1629      "template <typename T>\n"
1630      "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n"
1631      "                                      int Paaaaaaaaaaaaaaaaaaaaram2);");
1632  verifyFormat(
1633      "template <typename T>\n"
1634      "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n"
1635      "                    aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n"
1636      "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1637  verifyFormat("template <typename T>\n"
1638               "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1639               "    int aaaaaaaaaaaaaaaaa);");
1640  verifyFormat(
1641      "template <typename T1, typename T2 = char, typename T3 = char,\n"
1642      "          typename T4 = char>\n"
1643      "void f();");
1644  verifyFormat(
1645      "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
1646      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1647
1648  verifyFormat("a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n"
1649               "    a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));");
1650}
1651
1652TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
1653  verifyFormat(
1654      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1655      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
1656  verifyFormat(
1657      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1658      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1659      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
1660
1661  // FIXME: Should we have an extra indent after the second break?
1662  verifyFormat(
1663      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1664      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1665      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
1666
1667  // FIXME: Look into whether we should indent 4 from the start or 4 from
1668  // "bbbbb..." here instead of what we are doing now.
1669  verifyFormat(
1670      "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n"
1671      "                    cccccccccccccccccccccccccccccccccccccccccccccc());");
1672
1673  // Breaking at nested name specifiers is generally not desirable.
1674  verifyFormat(
1675      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1676      "    aaaaaaaaaaaaaaaaaaaaaaa);");
1677
1678  verifyFormat(
1679      "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1680      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1681      "                   aaaaaaaaaaaaaaaaaaaaa);",
1682      getLLVMStyleWithColumns(74));
1683}
1684
1685TEST_F(FormatTest, UnderstandsTemplateParameters) {
1686  verifyFormat("A<int> a;");
1687  verifyFormat("A<A<A<int> > > a;");
1688  verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
1689  verifyFormat("bool x = a < 1 || 2 > a;");
1690  verifyFormat("bool x = 5 < f<int>();");
1691  verifyFormat("bool x = f<int>() > 5;");
1692  verifyFormat("bool x = 5 < a<int>::x;");
1693  verifyFormat("bool x = a < 4 ? a > 2 : false;");
1694  verifyFormat("bool x = f() ? a < 2 : a > 2;");
1695
1696  verifyGoogleFormat("A<A<int>> a;");
1697  verifyGoogleFormat("A<A<A<int>>> a;");
1698  verifyGoogleFormat("A<A<A<A<int>>>> a;");
1699  verifyGoogleFormat("A<A<int> > a;");
1700  verifyGoogleFormat("A<A<A<int> > > a;");
1701  verifyGoogleFormat("A<A<A<A<int> > > > a;");
1702  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle()));
1703  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle()));
1704
1705  verifyFormat("test >> a >> b;");
1706  verifyFormat("test << a >> b;");
1707
1708  verifyFormat("f<int>();");
1709  verifyFormat("template <typename T> void f() {}");
1710}
1711
1712TEST_F(FormatTest, UnderstandsUnaryOperators) {
1713  verifyFormat("int a = -2;");
1714  verifyFormat("f(-1, -2, -3);");
1715  verifyFormat("a[-1] = 5;");
1716  verifyFormat("int a = 5 + -2;");
1717  verifyFormat("if (i == -1) {\n}");
1718  verifyFormat("if (i != -1) {\n}");
1719  verifyFormat("if (i > -1) {\n}");
1720  verifyFormat("if (i < -1) {\n}");
1721  verifyFormat("++(a->f());");
1722  verifyFormat("--(a->f());");
1723  verifyFormat("(a->f())++;");
1724  verifyFormat("a[42]++;");
1725  verifyFormat("if (!(a->f())) {\n}");
1726
1727  verifyFormat("a-- > b;");
1728  verifyFormat("b ? -a : c;");
1729  verifyFormat("n * sizeof char16;");
1730  verifyFormat("n * alignof char16;");
1731  verifyFormat("sizeof(char);");
1732  verifyFormat("alignof(char);");
1733
1734  verifyFormat("return -1;");
1735  verifyFormat("switch (a) {\n"
1736               "case -1:\n"
1737               "  break;\n"
1738               "}");
1739
1740  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { -5, +3 };");
1741  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { +5, -3 };");
1742
1743  verifyFormat("int a = /* confusing comment */ -1;");
1744  // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case.
1745  verifyFormat("int a = i /* confusing comment */++;");
1746}
1747
1748TEST_F(FormatTest, UndestandsOverloadedOperators) {
1749  verifyFormat("bool operator<();");
1750  verifyFormat("bool operator>();");
1751  verifyFormat("bool operator=();");
1752  verifyFormat("bool operator==();");
1753  verifyFormat("bool operator!=();");
1754  verifyFormat("int operator+();");
1755  verifyFormat("int operator++();");
1756  verifyFormat("bool operator();");
1757  verifyFormat("bool operator()();");
1758  verifyFormat("bool operator[]();");
1759  verifyFormat("operator bool();");
1760  verifyFormat("operator int();");
1761  verifyFormat("operator void *();");
1762  verifyFormat("operator SomeType<int>();");
1763  verifyFormat("operator SomeType<int, int>();");
1764  verifyFormat("operator SomeType<SomeType<int> >();");
1765  verifyFormat("void *operator new(std::size_t size);");
1766  verifyFormat("void *operator new[](std::size_t size);");
1767  verifyFormat("void operator delete(void *ptr);");
1768  verifyFormat("void operator delete[](void *ptr);");
1769
1770  verifyFormat(
1771      "ostream &operator<<(ostream &OutputStream,\n"
1772      "                    SomeReallyLongType WithSomeReallyLongValue);");
1773
1774  verifyGoogleFormat("operator void*();");
1775  verifyGoogleFormat("operator SomeType<SomeType<int>>();");
1776}
1777
1778TEST_F(FormatTest, UnderstandsNewAndDelete) {
1779  verifyFormat("void f() {\n"
1780               "  A *a = new A;\n"
1781               "  A *a = new (placement) A;\n"
1782               "  delete a;\n"
1783               "  delete (A *)a;\n"
1784               "}");
1785}
1786
1787TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
1788  verifyFormat("int *f(int *a) {}");
1789  verifyFormat("int main(int argc, char **argv) {}");
1790  verifyFormat("Test::Test(int b) : a(b * b) {}");
1791  verifyIndependentOfContext("f(a, *a);");
1792  verifyIndependentOfContext("f(*a);");
1793  verifyIndependentOfContext("int a = b * 10;");
1794  verifyIndependentOfContext("int a = 10 * b;");
1795  verifyIndependentOfContext("int a = b * c;");
1796  verifyIndependentOfContext("int a += b * c;");
1797  verifyIndependentOfContext("int a -= b * c;");
1798  verifyIndependentOfContext("int a *= b * c;");
1799  verifyIndependentOfContext("int a /= b * c;");
1800  verifyIndependentOfContext("int a = *b;");
1801  verifyIndependentOfContext("int a = *b * c;");
1802  verifyIndependentOfContext("int a = b * *c;");
1803  verifyIndependentOfContext("return 10 * b;");
1804  verifyIndependentOfContext("return *b * *c;");
1805  verifyIndependentOfContext("return a & ~b;");
1806  verifyIndependentOfContext("f(b ? *c : *d);");
1807  verifyIndependentOfContext("int a = b ? *c : *d;");
1808  verifyIndependentOfContext("*b = a;");
1809  verifyIndependentOfContext("a * ~b;");
1810  verifyIndependentOfContext("a * !b;");
1811  verifyIndependentOfContext("a * +b;");
1812  verifyIndependentOfContext("a * -b;");
1813  verifyIndependentOfContext("a * ++b;");
1814  verifyIndependentOfContext("a * --b;");
1815  verifyIndependentOfContext("a[4] * b;");
1816  verifyIndependentOfContext("f() * b;");
1817  verifyIndependentOfContext("a * [self dostuff];");
1818  verifyIndependentOfContext("a * (a + b);");
1819  verifyIndependentOfContext("(a *)(a + b);");
1820  verifyIndependentOfContext("int *pa = (int *)&a;");
1821  verifyIndependentOfContext("return sizeof(int **);");
1822  verifyIndependentOfContext("return sizeof(int ******);");
1823  verifyIndependentOfContext("return (int **&)a;");
1824  verifyGoogleFormat("return sizeof(int**);");
1825  verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
1826  verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
1827  // FIXME: The newline is wrong.
1828  verifyFormat("auto a = [](int **&, int ***) {}\n;");
1829
1830  verifyIndependentOfContext("InvalidRegions[*R] = 0;");
1831
1832  verifyIndependentOfContext("A<int *> a;");
1833  verifyIndependentOfContext("A<int **> a;");
1834  verifyIndependentOfContext("A<int *, int *> a;");
1835  verifyIndependentOfContext(
1836      "const char *const p = reinterpret_cast<const char *const>(q);");
1837  verifyIndependentOfContext("A<int **, int **> a;");
1838  verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);");
1839
1840  verifyFormat(
1841      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1842      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1843
1844  verifyGoogleFormat("int main(int argc, char** argv) {}");
1845  verifyGoogleFormat("A<int*> a;");
1846  verifyGoogleFormat("A<int**> a;");
1847  verifyGoogleFormat("A<int*, int*> a;");
1848  verifyGoogleFormat("A<int**, int**> a;");
1849  verifyGoogleFormat("f(b ? *c : *d);");
1850  verifyGoogleFormat("int a = b ? *c : *d;");
1851  verifyGoogleFormat("Type* t = **x;");
1852  verifyGoogleFormat("Type* t = *++*x;");
1853  verifyGoogleFormat("*++*x;");
1854  verifyGoogleFormat("Type* t = const_cast<T*>(&*x);");
1855  verifyGoogleFormat("Type* t = x++ * y;");
1856  verifyGoogleFormat(
1857      "const char* const p = reinterpret_cast<const char* const>(q);");
1858
1859  verifyIndependentOfContext("a = *(x + y);");
1860  verifyIndependentOfContext("a = &(x + y);");
1861  verifyIndependentOfContext("*(x + y).call();");
1862  verifyIndependentOfContext("&(x + y)->call();");
1863  verifyIndependentOfContext("&(*I).first");
1864
1865  verifyIndependentOfContext("f(b * /* confusing comment */ ++c);");
1866  verifyFormat(
1867      "int *MyValues = {\n"
1868      "  *A, // Operator detection might be confused by the '{'\n"
1869      "  *BB // Operator detection might be confused by previous comment\n"
1870      "};");
1871
1872  verifyIndependentOfContext("if (int *a = &b)");
1873  verifyIndependentOfContext("if (int &a = *b)");
1874  verifyIndependentOfContext("if (a & b[i])");
1875  verifyIndependentOfContext("if (a::b::c::d & b[i])");
1876  verifyIndependentOfContext("if (*b[i])");
1877  verifyIndependentOfContext("if (int *a = (&b))");
1878  verifyIndependentOfContext("while (int *a = &b)");
1879  verifyFormat("void f() {\n"
1880               "  for (const int &v : Values) {\n"
1881               "  }\n"
1882               "}");
1883  verifyFormat("for (int i = a * a; i < 10; ++i) {\n}");
1884  verifyFormat("for (int i = 0; i < a * a; ++i) {\n}");
1885
1886  verifyIndependentOfContext("A = new SomeType *[Length]();");
1887  verifyGoogleFormat("A = new SomeType* [Length]();");
1888
1889  EXPECT_EQ("int *a;\n"
1890            "int *a;\n"
1891            "int *a;",
1892            format("int *a;\n"
1893                   "int* a;\n"
1894                   "int *a;",
1895                   getGoogleStyle()));
1896  EXPECT_EQ("int* a;\n"
1897            "int* a;\n"
1898            "int* a;",
1899            format("int* a;\n"
1900                   "int* a;\n"
1901                   "int *a;",
1902                   getGoogleStyle()));
1903  EXPECT_EQ("int *a;\n"
1904            "int *a;\n"
1905            "int *a;",
1906            format("int *a;\n"
1907                   "int * a;\n"
1908                   "int *  a;",
1909                   getGoogleStyle()));
1910}
1911
1912TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) {
1913  verifyFormat("void f() {\n"
1914               "  x[aaaaaaaaa -\n"
1915               "      b] = 23;\n"
1916               "}",
1917               getLLVMStyleWithColumns(15));
1918}
1919
1920TEST_F(FormatTest, FormatsCasts) {
1921  verifyFormat("Type *A = static_cast<Type *>(P);");
1922  verifyFormat("Type *A = (Type *)P;");
1923  verifyFormat("Type *A = (vector<Type *, int *>)P;");
1924  verifyFormat("int a = (int)(2.0f);");
1925
1926  // FIXME: These also need to be identified.
1927  verifyFormat("int a = (int) 2.0f;");
1928  verifyFormat("int a = (int) * b;");
1929
1930  // These are not casts.
1931  verifyFormat("void f(int *) {}");
1932  verifyFormat("f(foo)->b;");
1933  verifyFormat("f(foo).b;");
1934  verifyFormat("f(foo)(b);");
1935  verifyFormat("f(foo)[b];");
1936  verifyFormat("[](foo) { return 4; }(bar)];");
1937  verifyFormat("(*funptr)(foo)[4];");
1938  verifyFormat("funptrs[4](foo)[4];");
1939  verifyFormat("void f(int *);");
1940  verifyFormat("void f(int *) = 0;");
1941  verifyFormat("void f(SmallVector<int>) {}");
1942  verifyFormat("void f(SmallVector<int>);");
1943  verifyFormat("void f(SmallVector<int>) = 0;");
1944  verifyFormat("void f(int i = (kValue) * kMask) {}");
1945  verifyFormat("void f(int i = (kA * kB) & kMask) {}");
1946  verifyFormat("int a = sizeof(int) * b;");
1947  verifyFormat("int a = alignof(int) * b;");
1948
1949  // These are not casts, but at some point were confused with casts.
1950  verifyFormat("virtual void foo(int *) override;");
1951  verifyFormat("virtual void foo(char &) const;");
1952  verifyFormat("virtual void foo(int *a, char *) const;");
1953}
1954
1955TEST_F(FormatTest, FormatsFunctionTypes) {
1956  // FIXME: Determine the cases that need a space after the return type and fix.
1957  verifyFormat("A<bool()> a;");
1958  verifyFormat("A<SomeType()> a;");
1959  verifyFormat("A<void(*)(int, std::string)> a;");
1960
1961  verifyFormat("int(*func)(void *);");
1962}
1963
1964TEST_F(FormatTest, BreaksLongDeclarations) {
1965  verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n"
1966               "                  int LoooooooooooooooooooongParam2) {}");
1967  verifyFormat(
1968      "TypeSpecDecl *\n"
1969      "TypeSpecDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L,\n"
1970      "                     IdentifierIn *II, Type *T) {}");
1971  verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n"
1972               "ReallyReallyLongFunctionName(\n"
1973               "    const std::string &SomeParameter,\n"
1974               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
1975               "        ReallyReallyLongParameterName,\n"
1976               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
1977               "        AnotherLongParameterName) {}");
1978  verifyFormat(
1979      "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n"
1980      "aaaaaaaaaaaaaaaaaaaaaaa;");
1981
1982  verifyGoogleFormat(
1983      "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n"
1984      "                                   SourceLocation L) {}");
1985  verifyGoogleFormat(
1986      "some_namespace::LongReturnType\n"
1987      "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n"
1988      "    int first_long_parameter, int second_parameter) {}");
1989
1990  verifyGoogleFormat("template <typename T>\n"
1991                     "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n"
1992                     "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}");
1993}
1994
1995TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
1996  verifyFormat("(a)->b();");
1997  verifyFormat("--a;");
1998}
1999
2000TEST_F(FormatTest, HandlesIncludeDirectives) {
2001  verifyFormat("#include <string>\n"
2002               "#include <a/b/c.h>\n"
2003               "#include \"a/b/string\"\n"
2004               "#include \"string.h\"\n"
2005               "#include \"string.h\"\n"
2006               "#include <a-a>\n"
2007               "#include < path with space >\n"
2008               "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"",
2009               getLLVMStyleWithColumns(35));
2010
2011  verifyFormat("#import <string>");
2012  verifyFormat("#import <a/b/c.h>");
2013  verifyFormat("#import \"a/b/string\"");
2014  verifyFormat("#import \"string.h\"");
2015  verifyFormat("#import \"string.h\"");
2016}
2017
2018//===----------------------------------------------------------------------===//
2019// Error recovery tests.
2020//===----------------------------------------------------------------------===//
2021
2022TEST_F(FormatTest, IncompleteParameterLists) {
2023  FormatStyle NoBinPacking = getLLVMStyle();
2024  NoBinPacking.BinPackParameters = false;
2025  verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
2026               "                        double *min_x,\n"
2027               "                        double *max_x,\n"
2028               "                        double *min_y,\n"
2029               "                        double *max_y,\n"
2030               "                        double *min_z,\n"
2031               "                        double *max_z, ) {}",
2032               NoBinPacking);
2033}
2034
2035TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
2036  verifyFormat("void f() { return; }\n42");
2037  verifyFormat("void f() {\n"
2038               "  if (0)\n"
2039               "    return;\n"
2040               "}\n"
2041               "42");
2042  verifyFormat("void f() { return }\n42");
2043  verifyFormat("void f() {\n"
2044               "  if (0)\n"
2045               "    return\n"
2046               "}\n"
2047               "42");
2048}
2049
2050TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
2051  EXPECT_EQ("void f() { return }", format("void  f ( )  {  return  }"));
2052  EXPECT_EQ("void f() {\n"
2053            "  if (a)\n"
2054            "    return\n"
2055            "}",
2056            format("void  f  (  )  {  if  ( a )  return  }"));
2057  EXPECT_EQ("namespace N { void f() }", format("namespace  N  {  void f()  }"));
2058  EXPECT_EQ("namespace N {\n"
2059            "void f() {}\n"
2060            "void g()\n"
2061            "}",
2062            format("namespace N  { void f( ) { } void g( ) }"));
2063}
2064
2065TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
2066  verifyFormat("int aaaaaaaa =\n"
2067               "    // Overly long comment\n"
2068               "    b;",
2069               getLLVMStyleWithColumns(20));
2070  verifyFormat("function(\n"
2071               "    ShortArgument,\n"
2072               "    LoooooooooooongArgument);\n",
2073               getLLVMStyleWithColumns(20));
2074}
2075
2076TEST_F(FormatTest, IncorrectAccessSpecifier) {
2077  verifyFormat("public:");
2078  verifyFormat("class A {\n"
2079               "public\n"
2080               "  void f() {}\n"
2081               "};");
2082  verifyFormat("public\n"
2083               "int qwerty;");
2084  verifyFormat("public\n"
2085               "B {}");
2086  verifyFormat("public\n"
2087               "{}");
2088  verifyFormat("public\n"
2089               "B { int x; }");
2090}
2091
2092TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) { verifyFormat("{"); }
2093
2094TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
2095  verifyFormat("do {\n}");
2096  verifyFormat("do {\n}\n"
2097               "f();");
2098  verifyFormat("do {\n}\n"
2099               "wheeee(fun);");
2100  verifyFormat("do {\n"
2101               "  f();\n"
2102               "}");
2103}
2104
2105TEST_F(FormatTest, IncorrectCodeMissingParens) {
2106  verifyFormat("if {\n  foo;\n  foo();\n}");
2107  verifyFormat("switch {\n  foo;\n  foo();\n}");
2108  verifyFormat("for {\n  foo;\n  foo();\n}");
2109  verifyFormat("while {\n  foo;\n  foo();\n}");
2110  verifyFormat("do {\n  foo;\n  foo();\n} while;");
2111}
2112
2113TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
2114  verifyFormat("namespace {\n"
2115               "class Foo {  Foo  ( }; }  // comment");
2116}
2117
2118TEST_F(FormatTest, IncorrectCodeErrorDetection) {
2119  EXPECT_EQ("{\n{}\n", format("{\n{\n}\n"));
2120  EXPECT_EQ("{\n  {}\n", format("{\n  {\n}\n"));
2121  EXPECT_EQ("{\n  {}\n", format("{\n  {\n  }\n"));
2122  EXPECT_EQ("{\n  {}\n  }\n}\n", format("{\n  {\n    }\n  }\n}\n"));
2123
2124  EXPECT_EQ("{\n"
2125            "    {\n"
2126            " breakme(\n"
2127            "     qwe);\n"
2128            "}\n",
2129            format("{\n"
2130                   "    {\n"
2131                   " breakme(qwe);\n"
2132                   "}\n",
2133                   getLLVMStyleWithColumns(10)));
2134}
2135
2136TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
2137  verifyFormat("int x = {\n"
2138               "  avariable,\n"
2139               "  b(alongervariable)\n"
2140               "};",
2141               getLLVMStyleWithColumns(25));
2142}
2143
2144TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
2145  verifyFormat("return (a)(b) { 1, 2, 3 };");
2146}
2147
2148TEST_F(FormatTest, LayoutTokensFollowingBlockInParentheses) {
2149  // FIXME: This is bad, find a better and more generic solution.
2150  verifyFormat(
2151      "Aaa({\n"
2152      "  int i;\n"
2153      "},\n"
2154      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
2155      "                                     ccccccccccccccccc));");
2156}
2157
2158TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
2159  verifyFormat("void f() { return 42; }");
2160  verifyFormat("void f() {\n"
2161               "  // Comment\n"
2162               "}");
2163  verifyFormat("{\n"
2164               "#error {\n"
2165               "  int a;\n"
2166               "}");
2167  verifyFormat("{\n"
2168               "  int a;\n"
2169               "#error {\n"
2170               "}");
2171
2172  verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
2173  verifyFormat("void f() {\n  return 42;\n}", getLLVMStyleWithColumns(22));
2174
2175  verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
2176  verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
2177}
2178
2179TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
2180  // Elaborate type variable declarations.
2181  verifyFormat("struct foo a = { bar };\nint n;");
2182  verifyFormat("class foo a = { bar };\nint n;");
2183  verifyFormat("union foo a = { bar };\nint n;");
2184
2185  // Elaborate types inside function definitions.
2186  verifyFormat("struct foo f() {}\nint n;");
2187  verifyFormat("class foo f() {}\nint n;");
2188  verifyFormat("union foo f() {}\nint n;");
2189
2190  // Templates.
2191  verifyFormat("template <class X> void f() {}\nint n;");
2192  verifyFormat("template <struct X> void f() {}\nint n;");
2193  verifyFormat("template <union X> void f() {}\nint n;");
2194
2195  // Actual definitions...
2196  verifyFormat("struct {\n} n;");
2197  verifyFormat(
2198      "template <template <class T, class Y>, class Z> class X {\n} n;");
2199  verifyFormat("union Z {\n  int n;\n} x;");
2200  verifyFormat("class MACRO Z {\n} n;");
2201  verifyFormat("class MACRO(X) Z {\n} n;");
2202  verifyFormat("class __attribute__(X) Z {\n} n;");
2203  verifyFormat("class __declspec(X) Z {\n} n;");
2204  verifyFormat("class A##B##C {\n} n;");
2205
2206  // Redefinition from nested context:
2207  verifyFormat("class A::B::C {\n} n;");
2208
2209  // Template definitions.
2210  // FIXME: This is still incorrectly handled at the formatter side.
2211  verifyFormat("template <> struct X < 15, i < 3 && 42 < 50 && 33<28> {\n};");
2212
2213  // FIXME:
2214  // This now gets parsed incorrectly as class definition.
2215  // verifyFormat("class A<int> f() {\n}\nint n;");
2216
2217  // Elaborate types where incorrectly parsing the structural element would
2218  // break the indent.
2219  verifyFormat("if (true)\n"
2220               "  class X x;\n"
2221               "else\n"
2222               "  f();\n");
2223}
2224
2225TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
2226  verifyFormat("#error Leave     all         white!!!!! space* alone!\n");
2227  verifyFormat("#warning Leave     all         white!!!!! space* alone!\n");
2228  EXPECT_EQ("#error 1", format("  #  error   1"));
2229  EXPECT_EQ("#warning 1", format("  #  warning 1"));
2230}
2231
2232TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
2233  FormatStyle AllowsMergedIf = getGoogleStyle();
2234  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
2235  verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
2236  verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
2237  verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
2238  EXPECT_EQ("if (true) return 42;",
2239            format("if (true)\nreturn 42;", AllowsMergedIf));
2240  FormatStyle ShortMergedIf = AllowsMergedIf;
2241  ShortMergedIf.ColumnLimit = 25;
2242  verifyFormat("#define A               \\\n"
2243               "  if (true) return 42;",
2244               ShortMergedIf);
2245  verifyFormat("#define A               \\\n"
2246               "  f();                  \\\n"
2247               "  if (true)\n"
2248               "#define B",
2249               ShortMergedIf);
2250  verifyFormat("#define A               \\\n"
2251               "  f();                  \\\n"
2252               "  if (true)\n"
2253               "g();",
2254               ShortMergedIf);
2255  verifyFormat("{\n"
2256               "#ifdef A\n"
2257               "  // Comment\n"
2258               "  if (true) continue;\n"
2259               "#endif\n"
2260               "  // Comment\n"
2261               "  if (true) continue;",
2262               ShortMergedIf);
2263}
2264
2265TEST_F(FormatTest, BlockCommentsInControlLoops) {
2266  verifyFormat("if (0) /* a comment in a strange place */ {\n"
2267               "  f();\n"
2268               "}");
2269  verifyFormat("if (0) /* a comment in a strange place */ {\n"
2270               "  f();\n"
2271               "} /* another comment */ else /* comment #3 */ {\n"
2272               "  g();\n"
2273               "}");
2274  verifyFormat("while (0) /* a comment in a strange place */ {\n"
2275               "  f();\n"
2276               "}");
2277  verifyFormat("for (;;) /* a comment in a strange place */ {\n"
2278               "  f();\n"
2279               "}");
2280  verifyFormat("do /* a comment in a strange place */ {\n"
2281               "  f();\n"
2282               "} /* another comment */ while (0);");
2283}
2284
2285TEST_F(FormatTest, BlockComments) {
2286  EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */",
2287            format("/* *//* */  /* */\n/* *//* */  /* */"));
2288  EXPECT_EQ("/* */ a /* */ b;", format("  /* */  a/* */  b;"));
2289  EXPECT_EQ("#define A /*   */\\\n"
2290            "  b\n"
2291            "/* */\n"
2292            "someCall(\n"
2293            "    parameter);",
2294            format("#define A /*   */ b\n"
2295                   "/* */\n"
2296                   "someCall(parameter);",
2297                   getLLVMStyleWithColumns(15)));
2298
2299  EXPECT_EQ("#define A\n"
2300            "/* */ someCall(\n"
2301            "    parameter);",
2302            format("#define A\n"
2303                   "/* */someCall(parameter);",
2304                   getLLVMStyleWithColumns(15)));
2305
2306  FormatStyle NoBinPacking = getLLVMStyle();
2307  NoBinPacking.BinPackParameters = false;
2308  EXPECT_EQ("someFunction(1, /* comment 1 */\n"
2309            "             2, /* comment 2 */\n"
2310            "             3, /* comment 3 */\n"
2311            "             aaaa,\n"
2312            "             bbbb);",
2313            format("someFunction (1,   /* comment 1 */\n"
2314                   "                2, /* comment 2 */  \n"
2315                   "               3,   /* comment 3 */\n"
2316                   "aaaa, bbbb );",
2317                   NoBinPacking));
2318  verifyFormat(
2319      "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2320      "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2321  EXPECT_EQ(
2322      "bool aaaaaaaaaaaaa = /* trailing comment */\n"
2323      "    aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2324      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;",
2325      format(
2326          "bool       aaaaaaaaaaaaa =       /* trailing comment */\n"
2327          "    aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa    ||\n"
2328          "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa   || aaaaaaaaaaaaaaaaaaaaaaaaaa;"));
2329  EXPECT_EQ(
2330      "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
2331      "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;   /* comment */\n"
2332      "int cccccccccccccccccccccccccccccc;       /* comment */\n",
2333      format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
2334             "int      bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
2335             "int    cccccccccccccccccccccccccccccc;  /* comment */\n"));
2336}
2337
2338TEST_F(FormatTest, BlockCommentsInMacros) {
2339  EXPECT_EQ("#define A          \\\n"
2340            "  {                \\\n"
2341            "    /* one line */ \\\n"
2342            "    someCall();",
2343            format("#define A {        \\\n"
2344                   "  /* one line */   \\\n"
2345                   "  someCall();",
2346                   getLLVMStyleWithColumns(20)));
2347  EXPECT_EQ("#define A          \\\n"
2348            "  {                \\\n"
2349            "    /* previous */ \\\n"
2350            "    /* one line */ \\\n"
2351            "    someCall();",
2352            format("#define A {        \\\n"
2353                   "  /* previous */   \\\n"
2354                   "  /* one line */   \\\n"
2355                   "  someCall();",
2356                   getLLVMStyleWithColumns(20)));
2357}
2358
2359TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) {
2360  // FIXME: This is not what we want...
2361  verifyFormat("{\n"
2362               "// a"
2363               "// b");
2364}
2365
2366TEST_F(FormatTest, FormatStarDependingOnContext) {
2367  verifyFormat("void f(int *a);");
2368  verifyFormat("void f() { f(fint * b); }");
2369  verifyFormat("class A {\n  void f(int *a);\n};");
2370  verifyFormat("class A {\n  int *a;\n};");
2371  verifyFormat("namespace a {\n"
2372               "namespace b {\n"
2373               "class A {\n"
2374               "  void f() {}\n"
2375               "  int *a;\n"
2376               "};\n"
2377               "}\n"
2378               "}");
2379}
2380
2381TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
2382  verifyFormat("while");
2383  verifyFormat("operator");
2384}
2385
2386//===----------------------------------------------------------------------===//
2387// Objective-C tests.
2388//===----------------------------------------------------------------------===//
2389
2390TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
2391  verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
2392  EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
2393            format("-(NSUInteger)indexOfObject:(id)anObject;"));
2394  EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
2395  EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
2396  EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
2397            format("-(NSInteger)Method3:(id)anObject;"));
2398  EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
2399            format("-(NSInteger)Method4:(id)anObject;"));
2400  EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
2401            format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
2402  EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
2403            format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
2404  EXPECT_EQ(
2405      "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;",
2406      format(
2407          "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;"));
2408
2409  // Very long objectiveC method declaration.
2410  verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
2411               "                    inRange:(NSRange)range\n"
2412               "                   outRange:(NSRange)out_range\n"
2413               "                  outRange1:(NSRange)out_range1\n"
2414               "                  outRange2:(NSRange)out_range2\n"
2415               "                  outRange3:(NSRange)out_range3\n"
2416               "                  outRange4:(NSRange)out_range4\n"
2417               "                  outRange5:(NSRange)out_range5\n"
2418               "                  outRange6:(NSRange)out_range6\n"
2419               "                  outRange7:(NSRange)out_range7\n"
2420               "                  outRange8:(NSRange)out_range8\n"
2421               "                  outRange9:(NSRange)out_range9;");
2422
2423  verifyFormat("- (int)sum:(vector<int>)numbers;");
2424  verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
2425  // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
2426  // protocol lists (but not for template classes):
2427  //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
2428
2429  verifyFormat("- (int(*)())foo:(int(*)())f;");
2430  verifyGoogleFormat("- (int(*)())foo:(int(*)())foo;");
2431
2432  // If there's no return type (very rare in practice!), LLVM and Google style
2433  // agree.
2434  verifyFormat("- foo:(int)f;");
2435  verifyGoogleFormat("- foo:(int)foo;");
2436}
2437
2438TEST_F(FormatTest, FormatObjCBlocks) {
2439  verifyFormat("int (^Block)(int, int);");
2440  verifyFormat("int (^Block1)(int, int) = ^(int i, int j)");
2441}
2442
2443TEST_F(FormatTest, FormatObjCInterface) {
2444  verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n"
2445               "@public\n"
2446               "  int field1;\n"
2447               "@protected\n"
2448               "  int field2;\n"
2449               "@private\n"
2450               "  int field3;\n"
2451               "@package\n"
2452               "  int field4;\n"
2453               "}\n"
2454               "+ (id)init;\n"
2455               "@end");
2456
2457  verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n"
2458                     " @public\n"
2459                     "  int field1;\n"
2460                     " @protected\n"
2461                     "  int field2;\n"
2462                     " @private\n"
2463                     "  int field3;\n"
2464                     " @package\n"
2465                     "  int field4;\n"
2466                     "}\n"
2467                     "+ (id)init;\n"
2468                     "@end");
2469
2470  verifyFormat("@interface /* wait for it */ Foo\n"
2471               "+ (id)init;\n"
2472               "// Look, a comment!\n"
2473               "- (int)answerWith:(int)i;\n"
2474               "@end");
2475
2476  verifyFormat("@interface Foo\n"
2477               "@end\n"
2478               "@interface Bar\n"
2479               "@end");
2480
2481  verifyFormat("@interface Foo : Bar\n"
2482               "+ (id)init;\n"
2483               "@end");
2484
2485  verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n"
2486               "+ (id)init;\n"
2487               "@end");
2488
2489  verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n"
2490                     "+ (id)init;\n"
2491                     "@end");
2492
2493  verifyFormat("@interface Foo (HackStuff)\n"
2494               "+ (id)init;\n"
2495               "@end");
2496
2497  verifyFormat("@interface Foo ()\n"
2498               "+ (id)init;\n"
2499               "@end");
2500
2501  verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n"
2502               "+ (id)init;\n"
2503               "@end");
2504
2505  verifyGoogleFormat("@interface Foo (HackStuff)<MyProtocol>\n"
2506                     "+ (id)init;\n"
2507                     "@end");
2508
2509  verifyFormat("@interface Foo {\n"
2510               "  int _i;\n"
2511               "}\n"
2512               "+ (id)init;\n"
2513               "@end");
2514
2515  verifyFormat("@interface Foo : Bar {\n"
2516               "  int _i;\n"
2517               "}\n"
2518               "+ (id)init;\n"
2519               "@end");
2520
2521  verifyFormat("@interface Foo : Bar <Baz, Quux> {\n"
2522               "  int _i;\n"
2523               "}\n"
2524               "+ (id)init;\n"
2525               "@end");
2526
2527  verifyFormat("@interface Foo (HackStuff) {\n"
2528               "  int _i;\n"
2529               "}\n"
2530               "+ (id)init;\n"
2531               "@end");
2532
2533  verifyFormat("@interface Foo () {\n"
2534               "  int _i;\n"
2535               "}\n"
2536               "+ (id)init;\n"
2537               "@end");
2538
2539  verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n"
2540               "  int _i;\n"
2541               "}\n"
2542               "+ (id)init;\n"
2543               "@end");
2544}
2545
2546TEST_F(FormatTest, FormatObjCImplementation) {
2547  verifyFormat("@implementation Foo : NSObject {\n"
2548               "@public\n"
2549               "  int field1;\n"
2550               "@protected\n"
2551               "  int field2;\n"
2552               "@private\n"
2553               "  int field3;\n"
2554               "@package\n"
2555               "  int field4;\n"
2556               "}\n"
2557               "+ (id)init {\n}\n"
2558               "@end");
2559
2560  verifyGoogleFormat("@implementation Foo : NSObject {\n"
2561                     " @public\n"
2562                     "  int field1;\n"
2563                     " @protected\n"
2564                     "  int field2;\n"
2565                     " @private\n"
2566                     "  int field3;\n"
2567                     " @package\n"
2568                     "  int field4;\n"
2569                     "}\n"
2570                     "+ (id)init {\n}\n"
2571                     "@end");
2572
2573  verifyFormat("@implementation Foo\n"
2574               "+ (id)init {\n"
2575               "  if (true)\n"
2576               "    return nil;\n"
2577               "}\n"
2578               "// Look, a comment!\n"
2579               "- (int)answerWith:(int)i {\n"
2580               "  return i;\n"
2581               "}\n"
2582               "+ (int)answerWith:(int)i {\n"
2583               "  return i;\n"
2584               "}\n"
2585               "@end");
2586
2587  verifyFormat("@implementation Foo\n"
2588               "@end\n"
2589               "@implementation Bar\n"
2590               "@end");
2591
2592  verifyFormat("@implementation Foo : Bar\n"
2593               "+ (id)init {\n}\n"
2594               "- (void)foo {\n}\n"
2595               "@end");
2596
2597  verifyFormat("@implementation Foo {\n"
2598               "  int _i;\n"
2599               "}\n"
2600               "+ (id)init {\n}\n"
2601               "@end");
2602
2603  verifyFormat("@implementation Foo : Bar {\n"
2604               "  int _i;\n"
2605               "}\n"
2606               "+ (id)init {\n}\n"
2607               "@end");
2608
2609  verifyFormat("@implementation Foo (HackStuff)\n"
2610               "+ (id)init {\n}\n"
2611               "@end");
2612}
2613
2614TEST_F(FormatTest, FormatObjCProtocol) {
2615  verifyFormat("@protocol Foo\n"
2616               "@property(weak) id delegate;\n"
2617               "- (NSUInteger)numberOfThings;\n"
2618               "@end");
2619
2620  verifyFormat("@protocol MyProtocol <NSObject>\n"
2621               "- (NSUInteger)numberOfThings;\n"
2622               "@end");
2623
2624  verifyGoogleFormat("@protocol MyProtocol<NSObject>\n"
2625                     "- (NSUInteger)numberOfThings;\n"
2626                     "@end");
2627
2628  verifyFormat("@protocol Foo;\n"
2629               "@protocol Bar;\n");
2630
2631  verifyFormat("@protocol Foo\n"
2632               "@end\n"
2633               "@protocol Bar\n"
2634               "@end");
2635
2636  verifyFormat("@protocol myProtocol\n"
2637               "- (void)mandatoryWithInt:(int)i;\n"
2638               "@optional\n"
2639               "- (void)optional;\n"
2640               "@required\n"
2641               "- (void)required;\n"
2642               "@optional\n"
2643               "@property(assign) int madProp;\n"
2644               "@end\n");
2645}
2646
2647TEST_F(FormatTest, FormatObjCMethodDeclarations) {
2648  verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n"
2649               "                   rect:(NSRect)theRect\n"
2650               "               interval:(float)theInterval {\n"
2651               "}");
2652  verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n"
2653               "          longKeyword:(NSRect)theRect\n"
2654               "    evenLongerKeyword:(float)theInterval\n"
2655               "                error:(NSError **)theError {\n"
2656               "}");
2657}
2658
2659TEST_F(FormatTest, FormatObjCMethodExpr) {
2660  verifyFormat("[foo bar:baz];");
2661  verifyFormat("return [foo bar:baz];");
2662  verifyFormat("f([foo bar:baz]);");
2663  verifyFormat("f(2, [foo bar:baz]);");
2664  verifyFormat("f(2, a ? b : c);");
2665  verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];");
2666
2667  // Unary operators.
2668  verifyFormat("int a = +[foo bar:baz];");
2669  verifyFormat("int a = -[foo bar:baz];");
2670  verifyFormat("int a = ![foo bar:baz];");
2671  verifyFormat("int a = ~[foo bar:baz];");
2672  verifyFormat("int a = ++[foo bar:baz];");
2673  verifyFormat("int a = --[foo bar:baz];");
2674  verifyFormat("int a = sizeof [foo bar:baz];");
2675  verifyFormat("int a = alignof [foo bar:baz];");
2676  verifyFormat("int a = &[foo bar:baz];");
2677  verifyFormat("int a = *[foo bar:baz];");
2678  // FIXME: Make casts work, without breaking f()[4].
2679  //verifyFormat("int a = (int)[foo bar:baz];");
2680  //verifyFormat("return (int)[foo bar:baz];");
2681  //verifyFormat("(void)[foo bar:baz];");
2682  verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];");
2683
2684  // Binary operators.
2685  verifyFormat("[foo bar:baz], [foo bar:baz];");
2686  verifyFormat("[foo bar:baz] = [foo bar:baz];");
2687  verifyFormat("[foo bar:baz] *= [foo bar:baz];");
2688  verifyFormat("[foo bar:baz] /= [foo bar:baz];");
2689  verifyFormat("[foo bar:baz] %= [foo bar:baz];");
2690  verifyFormat("[foo bar:baz] += [foo bar:baz];");
2691  verifyFormat("[foo bar:baz] -= [foo bar:baz];");
2692  verifyFormat("[foo bar:baz] <<= [foo bar:baz];");
2693  verifyFormat("[foo bar:baz] >>= [foo bar:baz];");
2694  verifyFormat("[foo bar:baz] &= [foo bar:baz];");
2695  verifyFormat("[foo bar:baz] ^= [foo bar:baz];");
2696  verifyFormat("[foo bar:baz] |= [foo bar:baz];");
2697  verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];");
2698  verifyFormat("[foo bar:baz] || [foo bar:baz];");
2699  verifyFormat("[foo bar:baz] && [foo bar:baz];");
2700  verifyFormat("[foo bar:baz] | [foo bar:baz];");
2701  verifyFormat("[foo bar:baz] ^ [foo bar:baz];");
2702  verifyFormat("[foo bar:baz] & [foo bar:baz];");
2703  verifyFormat("[foo bar:baz] == [foo bar:baz];");
2704  verifyFormat("[foo bar:baz] != [foo bar:baz];");
2705  verifyFormat("[foo bar:baz] >= [foo bar:baz];");
2706  verifyFormat("[foo bar:baz] <= [foo bar:baz];");
2707  verifyFormat("[foo bar:baz] > [foo bar:baz];");
2708  verifyFormat("[foo bar:baz] < [foo bar:baz];");
2709  verifyFormat("[foo bar:baz] >> [foo bar:baz];");
2710  verifyFormat("[foo bar:baz] << [foo bar:baz];");
2711  verifyFormat("[foo bar:baz] - [foo bar:baz];");
2712  verifyFormat("[foo bar:baz] + [foo bar:baz];");
2713  verifyFormat("[foo bar:baz] * [foo bar:baz];");
2714  verifyFormat("[foo bar:baz] / [foo bar:baz];");
2715  verifyFormat("[foo bar:baz] % [foo bar:baz];");
2716  // Whew!
2717
2718  verifyFormat("return in[42];");
2719  verifyFormat("for (id foo in [self getStuffFor:bla]) {\n"
2720               "}");
2721
2722  verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];");
2723  verifyFormat("[self stuffWithInt:a ? b : c float:4.5];");
2724  verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];");
2725  verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];");
2726  verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]");
2727  verifyFormat("[button setAction:@selector(zoomOut:)];");
2728  verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];");
2729
2730  verifyFormat("arr[[self indexForFoo:a]];");
2731  verifyFormat("throw [self errorFor:a];");
2732  verifyFormat("@throw [self errorFor:a];");
2733
2734  // This tests that the formatter doesn't break after "backing" but before ":",
2735  // which would be at 80 columns.
2736  verifyFormat(
2737      "void f() {\n"
2738      "  if ((self = [super initWithContentRect:contentRect\n"
2739      "                               styleMask:styleMask\n"
2740      "                                 backing:NSBackingStoreBuffered\n"
2741      "                                   defer:YES]))");
2742
2743  verifyFormat(
2744      "[foo checkThatBreakingAfterColonWorksOk:\n"
2745      "        [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];");
2746
2747  verifyFormat("[myObj short:arg1 // Force line break\n"
2748               "          longKeyword:arg2\n"
2749               "    evenLongerKeyword:arg3\n"
2750               "                error:arg4];");
2751  verifyFormat(
2752      "void f() {\n"
2753      "  popup_window_.reset([[RenderWidgetPopupWindow alloc]\n"
2754      "      initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n"
2755      "                                     pos.width(), pos.height())\n"
2756      "                styleMask:NSBorderlessWindowMask\n"
2757      "                  backing:NSBackingStoreBuffered\n"
2758      "                    defer:NO]);\n"
2759      "}");
2760  verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n"
2761               "                             with:contentsNativeView];");
2762
2763  verifyFormat(
2764      "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n"
2765      "           owner:nillllll];");
2766
2767  verifyFormat(
2768      "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n"
2769      "        forType:kBookmarkButtonDragType];");
2770
2771  verifyFormat("[defaultCenter addObserver:self\n"
2772               "                  selector:@selector(willEnterFullscreen)\n"
2773               "                      name:kWillEnterFullscreenNotification\n"
2774               "                    object:nil];");
2775  verifyFormat("[image_rep drawInRect:drawRect\n"
2776               "             fromRect:NSZeroRect\n"
2777               "            operation:NSCompositeCopy\n"
2778               "             fraction:1.0\n"
2779               "       respectFlipped:NO\n"
2780               "                hints:nil];");
2781
2782  verifyFormat(
2783      "scoped_nsobject<NSTextField> message(\n"
2784      "    // The frame will be fixed up when |-setMessageText:| is called.\n"
2785      "    [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);");
2786}
2787
2788TEST_F(FormatTest, ObjCAt) {
2789  verifyFormat("@autoreleasepool");
2790  verifyFormat("@catch");
2791  verifyFormat("@class");
2792  verifyFormat("@compatibility_alias");
2793  verifyFormat("@defs");
2794  verifyFormat("@dynamic");
2795  verifyFormat("@encode");
2796  verifyFormat("@end");
2797  verifyFormat("@finally");
2798  verifyFormat("@implementation");
2799  verifyFormat("@import");
2800  verifyFormat("@interface");
2801  verifyFormat("@optional");
2802  verifyFormat("@package");
2803  verifyFormat("@private");
2804  verifyFormat("@property");
2805  verifyFormat("@protected");
2806  verifyFormat("@protocol");
2807  verifyFormat("@public");
2808  verifyFormat("@required");
2809  verifyFormat("@selector");
2810  verifyFormat("@synchronized");
2811  verifyFormat("@synthesize");
2812  verifyFormat("@throw");
2813  verifyFormat("@try");
2814
2815  EXPECT_EQ("@interface", format("@ interface"));
2816
2817  // The precise formatting of this doesn't matter, nobody writes code like
2818  // this.
2819  verifyFormat("@ /*foo*/ interface");
2820}
2821
2822TEST_F(FormatTest, ObjCSnippets) {
2823  verifyFormat("@autoreleasepool {\n"
2824               "  foo();\n"
2825               "}");
2826  verifyFormat("@class Foo, Bar;");
2827  verifyFormat("@compatibility_alias AliasName ExistingClass;");
2828  verifyFormat("@dynamic textColor;");
2829  verifyFormat("char *buf1 = @encode(int *);");
2830  verifyFormat("char *buf1 = @encode(typeof(4 * 5));");
2831  verifyFormat("char *buf1 = @encode(int **);");
2832  verifyFormat("Protocol *proto = @protocol(p1);");
2833  verifyFormat("SEL s = @selector(foo:);");
2834  verifyFormat("@synchronized(self) {\n"
2835               "  f();\n"
2836               "}");
2837
2838  verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
2839  verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
2840
2841  verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;");
2842  verifyFormat("@property(assign, getter=isEditable) BOOL editable;");
2843  verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;");
2844}
2845
2846TEST_F(FormatTest, ObjCLiterals) {
2847  verifyFormat("@\"String\"");
2848  verifyFormat("@1");
2849  verifyFormat("@+4.8");
2850  verifyFormat("@-4");
2851  verifyFormat("@1LL");
2852  verifyFormat("@.5");
2853  verifyFormat("@'c'");
2854  verifyFormat("@true");
2855
2856  verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);");
2857  verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);");
2858  verifyFormat("NSNumber *favoriteColor = @(Green);");
2859  verifyFormat("NSString *path = @(getenv(\"PATH\"));");
2860
2861  verifyFormat("@[");
2862  verifyFormat("@[]");
2863  verifyFormat(
2864      "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];");
2865  verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];");
2866
2867  verifyFormat("@{");
2868  verifyFormat("@{}");
2869  verifyFormat("@{ @\"one\" : @1 }");
2870  verifyFormat("return @{ @\"one\" : @1 };");
2871  verifyFormat("@{ @\"one\" : @1, }");
2872  verifyFormat("@{ @\"one\" : @{ @2 : @1 } }");
2873  verifyFormat("@{ @\"one\" : @{ @2 : @1 }, }");
2874  verifyFormat("@{ 1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2 }");
2875  verifyFormat("[self setDict:@{}");
2876  verifyFormat("[self setDict:@{ @1 : @2 }");
2877  verifyFormat("NSLog(@\"%@\", @{ @1 : @2, @2 : @3 }[@1]);");
2878  verifyFormat(
2879      "NSDictionary *masses = @{ @\"H\" : @1.0078, @\"He\" : @4.0026 };");
2880  verifyFormat(
2881      "NSDictionary *settings = @{ AVEncoderKey : @(AVAudioQualityMax) };");
2882
2883  // FIXME: Nested and multi-line array and dictionary literals need more work.
2884  verifyFormat(
2885      "NSDictionary *d = @{ @\"nam\" : NSUserNam(), @\"dte\" : [NSDate date],\n"
2886      "                     @\"processInfo\" : [NSProcessInfo processInfo] };");
2887}
2888
2889TEST_F(FormatTest, ReformatRegionAdjustsIndent) {
2890  EXPECT_EQ("{\n"
2891            "{\n"
2892            "a;\n"
2893            "b;\n"
2894            "}\n"
2895            "}",
2896            format("{\n"
2897                   "{\n"
2898                   "a;\n"
2899                   "     b;\n"
2900                   "}\n"
2901                   "}",
2902                   13, 2, getLLVMStyle()));
2903  EXPECT_EQ("{\n"
2904            "{\n"
2905            "  a;\n"
2906            "b;\n"
2907            "}\n"
2908            "}",
2909            format("{\n"
2910                   "{\n"
2911                   "     a;\n"
2912                   "b;\n"
2913                   "}\n"
2914                   "}",
2915                   9, 2, getLLVMStyle()));
2916  EXPECT_EQ("{\n"
2917            "{\n"
2918            "public:\n"
2919            "  b;\n"
2920            "}\n"
2921            "}",
2922            format("{\n"
2923                   "{\n"
2924                   "public:\n"
2925                   "     b;\n"
2926                   "}\n"
2927                   "}",
2928                   17, 2, getLLVMStyle()));
2929  EXPECT_EQ("{\n"
2930            "{\n"
2931            "a;\n"
2932            "}\n"
2933            "{\n"
2934            "  b;\n"
2935            "}\n"
2936            "}",
2937            format("{\n"
2938                   "{\n"
2939                   "a;\n"
2940                   "}\n"
2941                   "{\n"
2942                   "           b;\n"
2943                   "}\n"
2944                   "}",
2945                   22, 2, getLLVMStyle()));
2946  EXPECT_EQ("  {\n"
2947            "    a;\n"
2948            "  }",
2949            format("  {\n"
2950                   "a;\n"
2951                   "  }",
2952                   4, 2, getLLVMStyle()));
2953  EXPECT_EQ("void f() {}\n"
2954            "void g() {}",
2955            format("void f() {}\n"
2956                   "void g() {}",
2957                   13, 0, getLLVMStyle()));
2958}
2959
2960TEST_F(FormatTest, BreakStringLiterals) {
2961  EXPECT_EQ("\"some text \"\n"
2962            "\"other\";",
2963            format("\"some text other\";", getLLVMStyleWithColumns(12)));
2964  EXPECT_EQ(
2965      "#define A  \\\n"
2966      "  \"some \"  \\\n"
2967      "  \"text \"  \\\n"
2968      "  \"other\";",
2969      format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
2970  EXPECT_EQ(
2971      "#define A  \\\n"
2972      "  \"so \"    \\\n"
2973      "  \"text \"  \\\n"
2974      "  \"other\";",
2975      format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
2976
2977  EXPECT_EQ("\"some text\"",
2978            format("\"some text\"", getLLVMStyleWithColumns(1)));
2979  EXPECT_EQ("\"some text\"",
2980            format("\"some text\"", getLLVMStyleWithColumns(11)));
2981  EXPECT_EQ("\"some \"\n"
2982            "\"text\"",
2983            format("\"some text\"", getLLVMStyleWithColumns(10)));
2984  EXPECT_EQ("\"some \"\n"
2985            "\"text\"",
2986            format("\"some text\"", getLLVMStyleWithColumns(7)));
2987  EXPECT_EQ("\"some text\"",
2988            format("\"some text\"", getLLVMStyleWithColumns(6)));
2989
2990  EXPECT_EQ("variable =\n"
2991            "    \"long string \"\n"
2992            "    \"literal\";",
2993            format("variable = \"long string literal\";",
2994                   getLLVMStyleWithColumns(20)));
2995
2996  EXPECT_EQ("variable = f(\n"
2997            "    \"long string \"\n"
2998            "    \"literal\",\n"
2999            "    short,\n"
3000            "    loooooooooooooooooooong);",
3001            format("variable = f(\"long string literal\", short, "
3002                   "loooooooooooooooooooong);",
3003                   getLLVMStyleWithColumns(20)));
3004  EXPECT_EQ(
3005      "f(\"one two\".split(\n"
3006      "    variable));",
3007      format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
3008  EXPECT_EQ("f(\"one two three four five six \"\n"
3009            "  \"seven\".split(\n"
3010            "      really_looooong_variable));",
3011            format("f(\"one two three four five six seven\"."
3012                   "split(really_looooong_variable));",
3013                   getLLVMStyleWithColumns(33)));
3014
3015  EXPECT_EQ("f(\"some \"\n"
3016            "  \"text\",\n"
3017            "  other);",
3018            format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
3019
3020  // Only break as a last resort.
3021  verifyFormat(
3022      "aaaaaaaaaaaaaaaaaaaa(\n"
3023      "    aaaaaaaaaaaaaaaaaaaa,\n"
3024      "    aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
3025}
3026
3027} // end namespace tooling
3028} // end namespace clang
3029