FormatTest.cpp revision a4d4621b206f941cc58d9d0bc7c67a8e705c9d49 
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  verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13));
861  verifyFormat("#define A( \\\n    BB)", getLLVMStyleWithColumns(12));
862  verifyFormat("#define A( \\\n    A, B)", getLLVMStyleWithColumns(12));
863  // FIXME: We never break before the macro name.
864  verifyFormat("#define AA(\\\n    B)", getLLVMStyleWithColumns(12));
865
866  verifyFormat("#define A A\n#define A A");
867  verifyFormat("#define A(X) A\n#define A A");
868
869  verifyFormat("#define Something Other", getLLVMStyleWithColumns(23));
870  verifyFormat("#define Something    \\\n  Other", getLLVMStyleWithColumns(22));
871}
872
873TEST_F(FormatTest, HandlePreprocessorDirectiveContext) {
874  EXPECT_EQ("// some comment\n"
875            "#include \"a.h\"\n"
876            "#define A(  \\\n"
877            "    A, B)\n"
878            "#include \"b.h\"\n"
879            "// some comment\n",
880            format("  // some comment\n"
881                   "  #include \"a.h\"\n"
882                   "#define A(A,\\\n"
883                   "    B)\n"
884                   "    #include \"b.h\"\n"
885                   " // some comment\n",
886                   getLLVMStyleWithColumns(13)));
887}
888
889TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); }
890
891TEST_F(FormatTest, LayoutCodeInMacroDefinitions) {
892  EXPECT_EQ("#define A    \\\n"
893            "  c;         \\\n"
894            "  e;\n"
895            "f;",
896            format("#define A c; e;\n"
897                   "f;",
898                   getLLVMStyleWithColumns(14)));
899}
900
901TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); }
902
903TEST_F(FormatTest, LayoutSingleUnwrappedLineInMacro) {
904  EXPECT_EQ("# define A\\\n  b;",
905            format("# define A b;", 11, 2, getLLVMStyleWithColumns(11)));
906}
907
908TEST_F(FormatTest, MacroDefinitionInsideStatement) {
909  EXPECT_EQ("int x,\n"
910            "#define A\n"
911            "    y;",
912            format("int x,\n#define A\ny;"));
913}
914
915TEST_F(FormatTest, HashInMacroDefinition) {
916  verifyFormat("#define A \\\n  b #c;", getLLVMStyleWithColumns(11));
917  verifyFormat("#define A \\\n"
918               "  {       \\\n"
919               "    f(#c);\\\n"
920               "  }",
921               getLLVMStyleWithColumns(11));
922
923  verifyFormat("#define A(X)         \\\n"
924               "  void function##X()",
925               getLLVMStyleWithColumns(22));
926
927  verifyFormat("#define A(a, b, c)   \\\n"
928               "  void a##b##c()",
929               getLLVMStyleWithColumns(22));
930
931  verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
932}
933
934TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
935  verifyFormat("#define A (1)");
936}
937
938TEST_F(FormatTest, EmptyLinesInMacroDefinitions) {
939  EXPECT_EQ("#define A b;", format("#define A \\\n"
940                                   "          \\\n"
941                                   "  b;",
942                                   getLLVMStyleWithColumns(25)));
943  EXPECT_EQ("#define A \\\n"
944            "          \\\n"
945            "  a;      \\\n"
946            "  b;",
947            format("#define A \\\n"
948                   "          \\\n"
949                   "  a;      \\\n"
950                   "  b;",
951                   getLLVMStyleWithColumns(11)));
952  EXPECT_EQ("#define A \\\n"
953            "  a;      \\\n"
954            "          \\\n"
955            "  b;",
956            format("#define A \\\n"
957                   "  a;      \\\n"
958                   "          \\\n"
959                   "  b;",
960                   getLLVMStyleWithColumns(11)));
961}
962
963TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) {
964  // FIXME: Improve formatting of case labels in macros.
965  verifyFormat("#define SOMECASES  \\\n"
966               "case 1:            \\\n"
967               "  case 2\n",
968               getLLVMStyleWithColumns(20));
969
970  verifyFormat("#define A template <typename T>");
971  verifyFormat("#define STR(x) #x\n"
972               "f(STR(this_is_a_string_literal{));");
973}
974
975TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) {
976  EXPECT_EQ("{\n  {\n#define A\n  }\n}", format("{{\n#define A\n}}"));
977}
978
979TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) {
980  verifyFormat("{\n  { a #c; }\n}");
981}
982
983TEST_F(FormatTest, FormatUnbalancedStructuralElements) {
984  EXPECT_EQ("#define A \\\n  {       \\\n    {\nint i;",
985            format("#define A { {\nint i;", getLLVMStyleWithColumns(11)));
986  EXPECT_EQ("#define A \\\n  }       \\\n  }\nint i;",
987            format("#define A } }\nint i;", getLLVMStyleWithColumns(11)));
988}
989
990TEST_F(FormatTest, EscapedNewlineAtStartOfTokenInMacroDefinition) {
991  EXPECT_EQ(
992      "#define A \\\n  int i;  \\\n  int j;",
993      format("#define A \\\nint i;\\\n  int j;", getLLVMStyleWithColumns(11)));
994}
995
996TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) {
997  verifyFormat("#define A \\\n"
998               "  int v(  \\\n"
999               "      a); \\\n"
1000               "  int i;",
1001               getLLVMStyleWithColumns(11));
1002}
1003
1004TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) {
1005  EXPECT_EQ(
1006      "#define ALooooooooooooooooooooooooooooooooooooooongMacro("
1007      "                      \\\n"
1008      "    aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1009      "\n"
1010      "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1011      "    aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n",
1012      format("  #define   ALooooooooooooooooooooooooooooooooooooooongMacro("
1013             "\\\n"
1014             "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n"
1015             "  \n"
1016             "   AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n"
1017             "  aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n"));
1018}
1019
1020TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) {
1021  EXPECT_EQ("int\n"
1022            "#define A\n"
1023            "    a;",
1024            format("int\n#define A\na;"));
1025  verifyFormat("functionCallTo(\n"
1026               "    someOtherFunction(\n"
1027               "        withSomeParameters, whichInSequence,\n"
1028               "        areLongerThanALine(andAnotherCall,\n"
1029               "#define A B\n"
1030               "                           withMoreParamters,\n"
1031               "                           whichStronglyInfluenceTheLayout),\n"
1032               "        andMoreParameters),\n"
1033               "    trailing);",
1034               getLLVMStyleWithColumns(69));
1035}
1036
1037TEST_F(FormatTest, LayoutBlockInsideParens) {
1038  EXPECT_EQ("functionCall({\n"
1039            "  int i;\n"
1040            "});",
1041            format(" functionCall ( {int i;} );"));
1042}
1043
1044TEST_F(FormatTest, LayoutBlockInsideStatement) {
1045  EXPECT_EQ("SOME_MACRO { int i; }\n"
1046            "int i;",
1047            format("  SOME_MACRO  {int i;}  int i;"));
1048}
1049
1050TEST_F(FormatTest, LayoutNestedBlocks) {
1051  verifyFormat("void AddOsStrings(unsigned bitmask) {\n"
1052               "  struct s {\n"
1053               "    int i;\n"
1054               "  };\n"
1055               "  s kBitsToOs[] = { { 10 } };\n"
1056               "  for (int i = 0; i < 10; ++i)\n"
1057               "    return;\n"
1058               "}");
1059}
1060
1061TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) {
1062  EXPECT_EQ("{}", format("{}"));
1063
1064  // Negative test for enum.
1065  verifyFormat("enum E {\n};");
1066
1067  // Note that when there's a missing ';', we still join...
1068  verifyFormat("enum E {}");
1069}
1070
1071//===----------------------------------------------------------------------===//
1072// Line break tests.
1073//===----------------------------------------------------------------------===//
1074
1075TEST_F(FormatTest, FormatsFunctionDefinition) {
1076  verifyFormat("void f(int a, int b, int c, int d, int e, int f, int g,"
1077               " int h, int j, int f,\n"
1078               "       int c, int ddddddddddddd) {}");
1079}
1080
1081TEST_F(FormatTest, FormatsAwesomeMethodCall) {
1082  verifyFormat(
1083      "SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n"
1084      "                       parameter, parameter, parameter)),\n"
1085      "                   SecondLongCall(parameter));");
1086}
1087
1088TEST_F(FormatTest, PreventConfusingIndents) {
1089  verifyFormat(
1090      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1091      "    aaaaaaaaaaaaaaaaaaaaaaaa(\n"
1092      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1093      "    aaaaaaaaaaaaaaaaaaaaaaaa);");
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("int a = bbbb && ccc && fffff(\n"
1105               "#define A Just forcing a new line\n"
1106               "                           ddd);");
1107}
1108
1109TEST_F(FormatTest, ConstructorInitializers) {
1110  verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}");
1111  verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}",
1112               getLLVMStyleWithColumns(45));
1113  verifyFormat("Constructor()\n"
1114               "    : Inttializer(FitsOnTheLine) {}",
1115               getLLVMStyleWithColumns(44));
1116  verifyFormat("Constructor()\n"
1117               "    : Inttializer(FitsOnTheLine) {}",
1118               getLLVMStyleWithColumns(43));
1119
1120  verifyFormat(
1121      "SomeClass::Constructor()\n"
1122      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
1123
1124  verifyFormat(
1125      "SomeClass::Constructor()\n"
1126      "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1127      "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}");
1128  verifyFormat(
1129      "SomeClass::Constructor()\n"
1130      "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1131      "      aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}");
1132
1133  verifyFormat("Constructor()\n"
1134               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1135               "      aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1136               "                               aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1137               "      aaaaaaaaaaaaaaaaaaaaaaa() {}");
1138
1139  verifyFormat("Constructor()\n"
1140               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1141               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1142
1143  verifyFormat("Constructor(int Parameter = 0)\n"
1144               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n"
1145               "      aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}");
1146
1147  // Here a line could be saved by splitting the second initializer onto two
1148  // lines, but that is not desireable.
1149  verifyFormat("Constructor()\n"
1150               "    : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n"
1151               "      aaaaaaaaaaa(aaaaaaaaaaa),\n"
1152               "      aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1153
1154  FormatStyle OnePerLine = getLLVMStyle();
1155  OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true;
1156  verifyFormat("SomeClass::Constructor()\n"
1157               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1158               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1159               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
1160               OnePerLine);
1161  verifyFormat("SomeClass::Constructor()\n"
1162               "    : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n"
1163               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n"
1164               "      aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}",
1165               OnePerLine);
1166  verifyFormat("MyClass::MyClass(int var)\n"
1167               "    : some_var_(var),            // 4 space indent\n"
1168               "      some_other_var_(var + 1) { // lined up\n"
1169               "}",
1170               OnePerLine);
1171  verifyFormat("Constructor()\n"
1172               "    : aaaaa(aaaaaa),\n"
1173               "      aaaaa(aaaaaa),\n"
1174               "      aaaaa(aaaaaa),\n"
1175               "      aaaaa(aaaaaa),\n"
1176               "      aaaaa(aaaaaa) {}",
1177               OnePerLine);
1178
1179  // This test takes VERY long when memoization is broken.
1180  OnePerLine.BinPackParameters = false;
1181  std::string input = "Constructor()\n"
1182                      "    : aaaa(a,\n";
1183  for (unsigned i = 0, e = 80; i != e; ++i) {
1184    input += "           a,\n";
1185  }
1186  input += "           a) {}";
1187  verifyFormat(input, OnePerLine);
1188}
1189
1190TEST_F(FormatTest, BreaksAsHighAsPossible) {
1191  verifyFormat(
1192      "if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n"
1193      "    (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n"
1194      "  f();");
1195  verifyFormat("if (Intervals[i].getRange().getFirst() <\n"
1196               "    Intervals[i - 1].getRange().getLast()) {\n}");
1197}
1198
1199TEST_F(FormatTest, BreaksDesireably) {
1200  verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
1201               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n"
1202               "    aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}");
1203  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1204               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n"
1205               "}");
1206
1207  verifyFormat(
1208      "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1209      "                      aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}");
1210
1211  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1212               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1213               "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1214
1215  verifyFormat(
1216      "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1217      "                            aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
1218      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1219      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));");
1220
1221  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
1222               "    (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1223
1224  verifyFormat(
1225      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n"
1226      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1227  verifyFormat(
1228      "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1229      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1230  verifyFormat(
1231      "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1232      "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));");
1233
1234  // This test case breaks on an incorrect memoization, i.e. an optimization not
1235  // taking into account the StopAt value.
1236  verifyFormat(
1237      "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
1238      "       aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
1239      "       aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n"
1240      "       (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1241
1242  verifyFormat("{\n  {\n    {\n"
1243               "      Annotation.SpaceRequiredBefore =\n"
1244               "          Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n"
1245               "          Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n"
1246               "    }\n  }\n}");
1247}
1248
1249TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) {
1250  FormatStyle NoBinPacking = getLLVMStyle();
1251  NoBinPacking.BinPackParameters = false;
1252  verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n"
1253               "  aaaaaaaaaaaaaaaaaaaa,\n"
1254               "  aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);",
1255               NoBinPacking);
1256  verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n"
1257               "        aaaaaaaaaaaaa,\n"
1258               "        aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));",
1259               NoBinPacking);
1260  verifyFormat(
1261      "aaaaaaaa(aaaaaaaaaaaaa,\n"
1262      "         aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1263      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n"
1264      "         aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1265      "             aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));",
1266      NoBinPacking);
1267  verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
1268               "    .aaaaaaaaaaaaaaaaaa();",
1269               NoBinPacking);
1270  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1271               "    aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);",
1272               NoBinPacking);
1273
1274  verifyFormat(
1275      "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1276      "             aaaaaaaaaaaa,\n"
1277      "             aaaaaaaaaaaa);",
1278      NoBinPacking);
1279  verifyFormat(
1280      "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n"
1281      "                               ddddddddddddddddddddddddddddd),\n"
1282      "             test);",
1283      NoBinPacking);
1284
1285  verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n"
1286               "            aaaaaaaaaaaaaaaaaaaaaaa,\n"
1287               "            aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;",
1288               NoBinPacking);
1289  verifyFormat("a(\"a\"\n"
1290               "  \"a\",\n"
1291               "  a);");
1292
1293  NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false;
1294  verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n"
1295               "                aaaaaaaaa,\n"
1296               "                aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
1297               NoBinPacking);
1298  verifyFormat(
1299      "void f() {\n"
1300      "  aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n"
1301      "      .aaaaaaa();\n"
1302      "}",
1303      NoBinPacking);
1304}
1305
1306TEST_F(FormatTest, FormatsBuilderPattern) {
1307  verifyFormat(
1308      "return llvm::StringSwitch<Reference::Kind>(name)\n"
1309      "    .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n"
1310      "    .StartsWith(\".eh_frame\", ORDER_EH_FRAME).StartsWith(\".init\", ORDER_INIT)\n"
1311      "    .StartsWith(\".fini\", ORDER_FINI).StartsWith(\".hash\", ORDER_HASH)\n"
1312      "    .Default(ORDER_TEXT);\n");
1313
1314  verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n"
1315               "       aaaaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();");
1316  verifyFormat(
1317      "aaaaaaa->aaaaaaa\n"
1318      "    ->aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1319      "    ->aaaaaaaa(aaaaaaaaaaaaaaa);");
1320  verifyFormat(
1321      "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n"
1322      "                                        aaaaaaaaaaaaaa);");
1323  verifyFormat(
1324      "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa = aaaaaa->aaaaaaaaaaaa()\n"
1325      "    ->aaaaaaaaaaaaaaaa(\n"
1326      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1327      "    ->aaaaaaaaaaaaaaaaa();");
1328}
1329
1330TEST_F(FormatTest, DoesNotBreakTrailingAnnotation) {
1331  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1332               "    GUARDED_BY(aaaaaaaaaaaaa);");
1333  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
1334               "    GUARDED_BY(aaaaaaaaaaaaa);");
1335  verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n"
1336               "    GUARDED_BY(aaaaaaaaaaaaa) {}");
1337}
1338
1339TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) {
1340  verifyFormat(
1341      "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
1342      "    bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}");
1343  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
1344               "    ccccccccccccccccccccccccc) {\n}");
1345  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n"
1346               "    ccccccccccccccccccccccccc) {\n}");
1347  verifyFormat(
1348      "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n"
1349      "    ccccccccccccccccccccccccc) {\n}");
1350  verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n"
1351               "       bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n"
1352               "       cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n"
1353               "       dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;");
1354  verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n"
1355               "     aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n"
1356               "    aaaaaaaaaaaaaaa != aa) {\n}");
1357}
1358
1359TEST_F(FormatTest, BreaksAfterAssignments) {
1360  verifyFormat(
1361      "unsigned Cost =\n"
1362      "    TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n"
1363      "                        SI->getPointerAddressSpaceee());\n");
1364  verifyFormat(
1365      "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n"
1366      "    Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());");
1367
1368  verifyFormat(
1369      "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa()\n"
1370      "    .aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);");
1371}
1372
1373TEST_F(FormatTest, AlignsAfterAssignments) {
1374  verifyFormat(
1375      "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1376      "             aaaaaaaaaaaaaaaaaaaaaaaaa;");
1377  verifyFormat(
1378      "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1379      "          aaaaaaaaaaaaaaaaaaaaaaaaa;");
1380  verifyFormat(
1381      "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1382      "           aaaaaaaaaaaaaaaaaaaaaaaaa;");
1383  verifyFormat(
1384      "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1385      "              aaaaaaaaaaaaaaaaaaaaaaaaa);");
1386  verifyFormat("double LooooooooooooooooooooooooongResult =\n"
1387               "    aaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaa +\n"
1388               "    aaaaaaaaaaaaaaaaaaaaaaaa;");
1389}
1390
1391TEST_F(FormatTest, AlignsAfterReturn) {
1392  verifyFormat(
1393      "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1394      "       aaaaaaaaaaaaaaaaaaaaaaaaa;");
1395  verifyFormat(
1396      "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n"
1397      "        aaaaaaaaaaaaaaaaaaaaaaaaa);");
1398}
1399
1400TEST_F(FormatTest, BreaksConditionalExpressions) {
1401  verifyFormat(
1402      "aaaa(aaaaaaaaaaaaaaaaaaaa,\n"
1403      "     aaaaaaaaaaaaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1404      "                                : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1405  verifyFormat(
1406      "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1407      "                                   : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1408  verifyFormat(
1409      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n"
1410      "                                                    : aaaaaaaaaaaaa);");
1411  verifyFormat(
1412      "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1413      "                   aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaa\n"
1414      "                                    : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1415      "                   aaaaaaaaaaaaa);");
1416  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1417               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1418               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1419               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1420               "          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1421  verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1422               "       aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1423               "           ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1424               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1425               "           : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1426               "                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n"
1427               "       aaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1428
1429  verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1430               "    ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1431               "    : aaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1432  verifyFormat(
1433      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1434      "    ? aaaaaaaaaaaaaaa\n"
1435      "    : aaaaaaaaaaaaaaa;");
1436  verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n"
1437               "  aaaaaaaaa\n"
1438               "      ? b\n"
1439               "      : c);");
1440  verifyFormat(
1441      "unsigned Indent =\n"
1442      "    format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n"
1443      "                              ? IndentForLevel[TheLine.Level]\n"
1444      "                              : TheLine * 2,\n"
1445      "           TheLine.InPPDirective, PreviousEndOfLineColumn);",
1446      getLLVMStyleWithColumns(70));
1447
1448  FormatStyle NoBinPacking = getLLVMStyle();
1449  NoBinPacking.BinPackParameters = false;
1450  verifyFormat(
1451      "void f() {\n"
1452      "  g(aaa,\n"
1453      "    aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n"
1454      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1455      "        ? aaaaaaaaaaaaaaa\n"
1456      "        : aaaaaaaaaaaaaaa);\n"
1457      "}",
1458      NoBinPacking);
1459}
1460
1461TEST_F(FormatTest, DeclarationsOfMultipleVariables) {
1462  verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n"
1463               "     aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();");
1464  verifyFormat("bool a = true, b = false;");
1465
1466  // FIXME: Indentation looks weird.
1467  verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1468               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n"
1469               "     bbbbbbbbbbbbbbbbbbbbbbbbb =\n"
1470               "     bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);");
1471  verifyFormat(
1472      "bool aaaaaaaaaaaaaaaaaaaaa =\n"
1473      "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n"
1474      "     d = e && f;");
1475
1476}
1477
1478TEST_F(FormatTest, ConditionalExpressionsInBrackets) {
1479  verifyFormat("arr[foo ? bar : baz];");
1480  verifyFormat("f()[foo ? bar : baz];");
1481  verifyFormat("(a + b)[foo ? bar : baz];");
1482  verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];");
1483}
1484
1485TEST_F(FormatTest, AlignsStringLiterals) {
1486  verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n"
1487               "                                      \"short literal\");");
1488  verifyFormat(
1489      "looooooooooooooooooooooooongFunction(\n"
1490      "    \"short literal\"\n"
1491      "    \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");");
1492  verifyFormat("someFunction(\"Always break between multi-line\"\n"
1493               "             \" string literals\",\n"
1494               "             and, other, parameters);");
1495  EXPECT_EQ("fun + \"1243\" /* comment */\n"
1496            "      \"5678\";",
1497            format("fun + \"1243\" /* comment */\n"
1498                   "      \"5678\";",
1499                   getLLVMStyleWithColumns(28)));
1500  EXPECT_EQ(
1501      "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n"
1502      "         \"aaaaaaaaaaaaaaaaaaaaa\"\n"
1503      "         \"aaaaaaaaaaaaaaaa\";",
1504      format("aaaaaa ="
1505             "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa "
1506             "aaaaaaaaaaaaaaaaaaaaa\" "
1507             "\"aaaaaaaaaaaaaaaa\";"));
1508  verifyFormat("a = a + \"a\"\n"
1509               "        \"a\"\n"
1510               "        \"a\";");
1511
1512  verifyFormat(
1513      "#define LL_FORMAT \"ll\"\n"
1514      "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n"
1515      "       \"d, ddddddddd: %\" LL_FORMAT \"d\");");
1516}
1517
1518TEST_F(FormatTest, AlignsPipes) {
1519  verifyFormat(
1520      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1521      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1522      "    << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1523  verifyFormat(
1524      "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n"
1525      "                     << aaaaaaaaaaaaaaaaaaaa;");
1526  verifyFormat(
1527      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1528      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1529  verifyFormat(
1530      "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n"
1531      "                \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n"
1532      "             << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";");
1533  verifyFormat(
1534      "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n"
1535      "                                 << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n"
1536      "         << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1537
1538  verifyFormat("return out << \"somepacket = {\\n\"\n"
1539               "           << \"  aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n"
1540               "           << \"  bbbb = \" << pkt.bbbb << \"\\n\"\n"
1541               "           << \"  cccccc = \" << pkt.cccccc << \"\\n\"\n"
1542               "           << \"  ddd = [\" << pkt.ddd << \"]\\n\"\n"
1543               "           << \"}\";");
1544
1545  verifyFormat(
1546      "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n"
1547      "             << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n"
1548      "             << \"ccccccccccccccccc = \" << ccccccccccccccccc\n"
1549      "             << \"ddddddddddddddddd = \" << ddddddddddddddddd\n"
1550      "             << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;");
1551}
1552
1553TEST_F(FormatTest, UnderstandsEquals) {
1554  verifyFormat(
1555      "aaaaaaaaaaaaaaaaa =\n"
1556      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
1557  verifyFormat(
1558      "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1559      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
1560  verifyFormat(
1561      "if (a) {\n"
1562      "  f();\n"
1563      "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1564      "               aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n"
1565      "}");
1566
1567  verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n"
1568               "        100000000 + 10000000) {\n}");
1569}
1570
1571TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) {
1572  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
1573               "    .looooooooooooooooooooooooooooooooooooooongFunction();");
1574
1575  verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n"
1576               "    ->looooooooooooooooooooooooooooooooooooooongFunction();");
1577
1578  verifyFormat(
1579      "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n"
1580      "                                                          Parameter2);");
1581
1582  verifyFormat(
1583      "ShortObject->shortFunction(\n"
1584      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n"
1585      "    LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);");
1586
1587  verifyFormat("loooooooooooooongFunction(\n"
1588               "    LoooooooooooooongObject->looooooooooooooooongFunction());");
1589
1590  verifyFormat(
1591      "function(LoooooooooooooooooooooooooooooooooooongObject\n"
1592      "             ->loooooooooooooooooooooooooooooooooooooooongFunction());");
1593
1594  verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n"
1595               "    .WillRepeatedly(Return(SomeValue));");
1596  verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)]\n"
1597               "    .insert(ccccccccccccccccccccccc);");
1598
1599  // Here, it is not necessary to wrap at "." or "->".
1600  verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n"
1601               "    aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}");
1602  verifyFormat(
1603      "aaaaaaaaaaa->aaaaaaaaa(\n"
1604      "    aaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1605      "    aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n");
1606
1607  verifyFormat(
1608      "aaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1609      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());");
1610
1611  FormatStyle NoBinPacking = getLLVMStyle();
1612  NoBinPacking.BinPackParameters = false;
1613  verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
1614               "    .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n"
1615               "    .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n"
1616               "                         aaaaaaaaaaaaaaaaaaa,\n"
1617               "                         aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);",
1618               NoBinPacking);
1619}
1620
1621TEST_F(FormatTest, WrapsTemplateDeclarations) {
1622  verifyFormat("template <typename T>\n"
1623               "virtual void loooooooooooongFunction(int Param1, int Param2);");
1624  verifyFormat(
1625      "template <typename T>\n"
1626      "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;");
1627  verifyFormat("template <typename T>\n"
1628               "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n"
1629               "       int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);");
1630  verifyFormat(
1631      "template <typename T>\n"
1632      "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n"
1633      "                                      int Paaaaaaaaaaaaaaaaaaaaram2);");
1634  verifyFormat(
1635      "template <typename T>\n"
1636      "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n"
1637      "                    aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n"
1638      "                    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1639  verifyFormat("template <typename T>\n"
1640               "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1641               "    int aaaaaaaaaaaaaaaaa);");
1642  verifyFormat(
1643      "template <typename T1, typename T2 = char, typename T3 = char,\n"
1644      "          typename T4 = char>\n"
1645      "void f();");
1646  verifyFormat(
1647      "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n"
1648      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1649
1650  verifyFormat("a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n"
1651               "    a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));");
1652}
1653
1654TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) {
1655  verifyFormat(
1656      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1657      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
1658  verifyFormat(
1659      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1660      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1661      "        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());");
1662
1663  // FIXME: Should we have an extra indent after the second break?
1664  verifyFormat(
1665      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1666      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1667      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();");
1668
1669  // FIXME: Look into whether we should indent 4 from the start or 4 from
1670  // "bbbbb..." here instead of what we are doing now.
1671  verifyFormat(
1672      "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n"
1673      "                    cccccccccccccccccccccccccccccccccccccccccccccc());");
1674
1675  // Breaking at nested name specifiers is generally not desirable.
1676  verifyFormat(
1677      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1678      "    aaaaaaaaaaaaaaaaaaaaaaa);");
1679
1680  verifyFormat(
1681      "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n"
1682      "                                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
1683      "                   aaaaaaaaaaaaaaaaaaaaa);",
1684      getLLVMStyleWithColumns(74));
1685}
1686
1687TEST_F(FormatTest, UnderstandsTemplateParameters) {
1688  verifyFormat("A<int> a;");
1689  verifyFormat("A<A<A<int> > > a;");
1690  verifyFormat("A<A<A<int, 2>, 3>, 4> a;");
1691  verifyFormat("bool x = a < 1 || 2 > a;");
1692  verifyFormat("bool x = 5 < f<int>();");
1693  verifyFormat("bool x = f<int>() > 5;");
1694  verifyFormat("bool x = 5 < a<int>::x;");
1695  verifyFormat("bool x = a < 4 ? a > 2 : false;");
1696  verifyFormat("bool x = f() ? a < 2 : a > 2;");
1697
1698  verifyGoogleFormat("A<A<int>> a;");
1699  verifyGoogleFormat("A<A<A<int>>> a;");
1700  verifyGoogleFormat("A<A<A<A<int>>>> a;");
1701  verifyGoogleFormat("A<A<int> > a;");
1702  verifyGoogleFormat("A<A<A<int> > > a;");
1703  verifyGoogleFormat("A<A<A<A<int> > > > a;");
1704  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle()));
1705  EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle()));
1706
1707  verifyFormat("test >> a >> b;");
1708  verifyFormat("test << a >> b;");
1709
1710  verifyFormat("f<int>();");
1711  verifyFormat("template <typename T> void f() {}");
1712}
1713
1714TEST_F(FormatTest, UnderstandsBinaryOperators) {
1715  verifyFormat("COMPARE(a, ==, b);");
1716}
1717
1718TEST_F(FormatTest, UnderstandsUnaryOperators) {
1719  verifyFormat("int a = -2;");
1720  verifyFormat("f(-1, -2, -3);");
1721  verifyFormat("a[-1] = 5;");
1722  verifyFormat("int a = 5 + -2;");
1723  verifyFormat("if (i == -1) {\n}");
1724  verifyFormat("if (i != -1) {\n}");
1725  verifyFormat("if (i > -1) {\n}");
1726  verifyFormat("if (i < -1) {\n}");
1727  verifyFormat("++(a->f());");
1728  verifyFormat("--(a->f());");
1729  verifyFormat("(a->f())++;");
1730  verifyFormat("a[42]++;");
1731  verifyFormat("if (!(a->f())) {\n}");
1732
1733  verifyFormat("a-- > b;");
1734  verifyFormat("b ? -a : c;");
1735  verifyFormat("n * sizeof char16;");
1736  verifyFormat("n * alignof char16;");
1737  verifyFormat("sizeof(char);");
1738  verifyFormat("alignof(char);");
1739
1740  verifyFormat("return -1;");
1741  verifyFormat("switch (a) {\n"
1742               "case -1:\n"
1743               "  break;\n"
1744               "}");
1745
1746  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { -5, +3 };");
1747  verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = { +5, -3 };");
1748
1749  verifyFormat("int a = /* confusing comment */ -1;");
1750  // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case.
1751  verifyFormat("int a = i /* confusing comment */++;");
1752}
1753
1754TEST_F(FormatTest, UndestandsOverloadedOperators) {
1755  verifyFormat("bool operator<();");
1756  verifyFormat("bool operator>();");
1757  verifyFormat("bool operator=();");
1758  verifyFormat("bool operator==();");
1759  verifyFormat("bool operator!=();");
1760  verifyFormat("int operator+();");
1761  verifyFormat("int operator++();");
1762  verifyFormat("bool operator();");
1763  verifyFormat("bool operator()();");
1764  verifyFormat("bool operator[]();");
1765  verifyFormat("operator bool();");
1766  verifyFormat("operator int();");
1767  verifyFormat("operator void *();");
1768  verifyFormat("operator SomeType<int>();");
1769  verifyFormat("operator SomeType<int, int>();");
1770  verifyFormat("operator SomeType<SomeType<int> >();");
1771  verifyFormat("void *operator new(std::size_t size);");
1772  verifyFormat("void *operator new[](std::size_t size);");
1773  verifyFormat("void operator delete(void *ptr);");
1774  verifyFormat("void operator delete[](void *ptr);");
1775
1776  verifyFormat(
1777      "ostream &operator<<(ostream &OutputStream,\n"
1778      "                    SomeReallyLongType WithSomeReallyLongValue);");
1779
1780  verifyGoogleFormat("operator void*();");
1781  verifyGoogleFormat("operator SomeType<SomeType<int>>();");
1782}
1783
1784TEST_F(FormatTest, UnderstandsNewAndDelete) {
1785  verifyFormat("void f() {\n"
1786               "  A *a = new A;\n"
1787               "  A *a = new (placement) A;\n"
1788               "  delete a;\n"
1789               "  delete (A *)a;\n"
1790               "}");
1791}
1792
1793TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) {
1794  verifyFormat("int *f(int *a) {}");
1795  verifyFormat("int main(int argc, char **argv) {}");
1796  verifyFormat("Test::Test(int b) : a(b * b) {}");
1797  verifyIndependentOfContext("f(a, *a);");
1798  verifyIndependentOfContext("f(*a);");
1799  verifyIndependentOfContext("int a = b * 10;");
1800  verifyIndependentOfContext("int a = 10 * b;");
1801  verifyIndependentOfContext("int a = b * c;");
1802  verifyIndependentOfContext("int a += b * c;");
1803  verifyIndependentOfContext("int a -= b * c;");
1804  verifyIndependentOfContext("int a *= b * c;");
1805  verifyIndependentOfContext("int a /= b * c;");
1806  verifyIndependentOfContext("int a = *b;");
1807  verifyIndependentOfContext("int a = *b * c;");
1808  verifyIndependentOfContext("int a = b * *c;");
1809  verifyIndependentOfContext("return 10 * b;");
1810  verifyIndependentOfContext("return *b * *c;");
1811  verifyIndependentOfContext("return a & ~b;");
1812  verifyIndependentOfContext("f(b ? *c : *d);");
1813  verifyIndependentOfContext("int a = b ? *c : *d;");
1814  verifyIndependentOfContext("*b = a;");
1815  verifyIndependentOfContext("a * ~b;");
1816  verifyIndependentOfContext("a * !b;");
1817  verifyIndependentOfContext("a * +b;");
1818  verifyIndependentOfContext("a * -b;");
1819  verifyIndependentOfContext("a * ++b;");
1820  verifyIndependentOfContext("a * --b;");
1821  verifyIndependentOfContext("a[4] * b;");
1822  verifyIndependentOfContext("a[a * a] = 1;");
1823  verifyIndependentOfContext("f() * b;");
1824  verifyIndependentOfContext("a * [self dostuff];");
1825  verifyIndependentOfContext("a * (a + b);");
1826  verifyIndependentOfContext("(a *)(a + b);");
1827  verifyIndependentOfContext("int *pa = (int *)&a;");
1828  verifyIndependentOfContext("return sizeof(int **);");
1829  verifyIndependentOfContext("return sizeof(int ******);");
1830  verifyIndependentOfContext("return (int **&)a;");
1831  verifyGoogleFormat("return sizeof(int**);");
1832  verifyIndependentOfContext("Type **A = static_cast<Type **>(P);");
1833  verifyGoogleFormat("Type** A = static_cast<Type**>(P);");
1834  // FIXME: The newline is wrong.
1835  verifyFormat("auto a = [](int **&, int ***) {}\n;");
1836
1837  verifyIndependentOfContext("InvalidRegions[*R] = 0;");
1838
1839  verifyIndependentOfContext("A<int *> a;");
1840  verifyIndependentOfContext("A<int **> a;");
1841  verifyIndependentOfContext("A<int *, int *> a;");
1842  verifyIndependentOfContext(
1843      "const char *const p = reinterpret_cast<const char *const>(q);");
1844  verifyIndependentOfContext("A<int **, int **> a;");
1845  verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);");
1846
1847  verifyFormat(
1848      "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n"
1849      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);");
1850
1851  verifyGoogleFormat("int main(int argc, char** argv) {}");
1852  verifyGoogleFormat("A<int*> a;");
1853  verifyGoogleFormat("A<int**> a;");
1854  verifyGoogleFormat("A<int*, int*> a;");
1855  verifyGoogleFormat("A<int**, int**> a;");
1856  verifyGoogleFormat("f(b ? *c : *d);");
1857  verifyGoogleFormat("int a = b ? *c : *d;");
1858  verifyGoogleFormat("Type* t = **x;");
1859  verifyGoogleFormat("Type* t = *++*x;");
1860  verifyGoogleFormat("*++*x;");
1861  verifyGoogleFormat("Type* t = const_cast<T*>(&*x);");
1862  verifyGoogleFormat("Type* t = x++ * y;");
1863  verifyGoogleFormat(
1864      "const char* const p = reinterpret_cast<const char* const>(q);");
1865
1866  verifyIndependentOfContext("a = *(x + y);");
1867  verifyIndependentOfContext("a = &(x + y);");
1868  verifyIndependentOfContext("*(x + y).call();");
1869  verifyIndependentOfContext("&(x + y)->call();");
1870  verifyIndependentOfContext("&(*I).first");
1871
1872  verifyIndependentOfContext("f(b * /* confusing comment */ ++c);");
1873  verifyFormat(
1874      "int *MyValues = {\n"
1875      "  *A, // Operator detection might be confused by the '{'\n"
1876      "  *BB // Operator detection might be confused by previous comment\n"
1877      "};");
1878
1879  verifyIndependentOfContext("if (int *a = &b)");
1880  verifyIndependentOfContext("if (int &a = *b)");
1881  verifyIndependentOfContext("if (a & b[i])");
1882  verifyIndependentOfContext("if (a::b::c::d & b[i])");
1883  verifyIndependentOfContext("if (*b[i])");
1884  verifyIndependentOfContext("if (int *a = (&b))");
1885  verifyIndependentOfContext("while (int *a = &b)");
1886  verifyFormat("void f() {\n"
1887               "  for (const int &v : Values) {\n"
1888               "  }\n"
1889               "}");
1890  verifyFormat("for (int i = a * a; i < 10; ++i) {\n}");
1891  verifyFormat("for (int i = 0; i < a * a; ++i) {\n}");
1892
1893  verifyIndependentOfContext("A = new SomeType *[Length]();");
1894  verifyGoogleFormat("A = new SomeType* [Length]();");
1895
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  EXPECT_EQ("int *a;\n"
1911            "int *a;\n"
1912            "int *a;",
1913            format("int *a;\n"
1914                   "int * a;\n"
1915                   "int *  a;",
1916                   getGoogleStyle()));
1917}
1918
1919TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) {
1920  verifyFormat("void f() {\n"
1921               "  x[aaaaaaaaa -\n"
1922               "      b] = 23;\n"
1923               "}",
1924               getLLVMStyleWithColumns(15));
1925}
1926
1927TEST_F(FormatTest, FormatsCasts) {
1928  verifyFormat("Type *A = static_cast<Type *>(P);");
1929  verifyFormat("Type *A = (Type *)P;");
1930  verifyFormat("Type *A = (vector<Type *, int *>)P;");
1931  verifyFormat("int a = (int)(2.0f);");
1932
1933  // FIXME: These also need to be identified.
1934  verifyFormat("int a = (int) 2.0f;");
1935  verifyFormat("int a = (int) * b;");
1936
1937  // These are not casts.
1938  verifyFormat("void f(int *) {}");
1939  verifyFormat("f(foo)->b;");
1940  verifyFormat("f(foo).b;");
1941  verifyFormat("f(foo)(b);");
1942  verifyFormat("f(foo)[b];");
1943  verifyFormat("[](foo) { return 4; }(bar)];");
1944  verifyFormat("(*funptr)(foo)[4];");
1945  verifyFormat("funptrs[4](foo)[4];");
1946  verifyFormat("void f(int *);");
1947  verifyFormat("void f(int *) = 0;");
1948  verifyFormat("void f(SmallVector<int>) {}");
1949  verifyFormat("void f(SmallVector<int>);");
1950  verifyFormat("void f(SmallVector<int>) = 0;");
1951  verifyFormat("void f(int i = (kValue) * kMask) {}");
1952  verifyFormat("void f(int i = (kA * kB) & kMask) {}");
1953  verifyFormat("int a = sizeof(int) * b;");
1954  verifyFormat("int a = alignof(int) * b;");
1955
1956  // These are not casts, but at some point were confused with casts.
1957  verifyFormat("virtual void foo(int *) override;");
1958  verifyFormat("virtual void foo(char &) const;");
1959  verifyFormat("virtual void foo(int *a, char *) const;");
1960}
1961
1962TEST_F(FormatTest, FormatsFunctionTypes) {
1963  // FIXME: Determine the cases that need a space after the return type and fix.
1964  verifyFormat("A<bool()> a;");
1965  verifyFormat("A<SomeType()> a;");
1966  verifyFormat("A<void(*)(int, std::string)> a;");
1967
1968  verifyFormat("int(*func)(void *);");
1969}
1970
1971TEST_F(FormatTest, BreaksLongDeclarations) {
1972  verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n"
1973               "                  int LoooooooooooooooooooongParam2) {}");
1974  verifyFormat(
1975      "TypeSpecDecl *\n"
1976      "TypeSpecDecl::Create(ASTContext &C, DeclContext *DC, SourceLocation L,\n"
1977      "                     IdentifierIn *II, Type *T) {}");
1978  verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n"
1979               "ReallyReallyLongFunctionName(\n"
1980               "    const std::string &SomeParameter,\n"
1981               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
1982               "        ReallyReallyLongParameterName,\n"
1983               "    const SomeType<string, SomeOtherTemplateParameter> &\n"
1984               "        AnotherLongParameterName) {}");
1985  verifyFormat(
1986      "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n"
1987      "aaaaaaaaaaaaaaaaaaaaaaa;");
1988
1989  verifyGoogleFormat(
1990      "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n"
1991      "                                   SourceLocation L) {}");
1992  verifyGoogleFormat(
1993      "some_namespace::LongReturnType\n"
1994      "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n"
1995      "    int first_long_parameter, int second_parameter) {}");
1996
1997  verifyGoogleFormat("template <typename T>\n"
1998                     "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n"
1999                     "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}");
2000  verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n"
2001                     "                   int aaaaaaaaaaaaaaaaaaaaaaa);");
2002}
2003
2004TEST_F(FormatTest, LineStartsWithSpecialCharacter) {
2005  verifyFormat("(a)->b();");
2006  verifyFormat("--a;");
2007}
2008
2009TEST_F(FormatTest, HandlesIncludeDirectives) {
2010  verifyFormat("#include <string>\n"
2011               "#include <a/b/c.h>\n"
2012               "#include \"a/b/string\"\n"
2013               "#include \"string.h\"\n"
2014               "#include \"string.h\"\n"
2015               "#include <a-a>\n"
2016               "#include < path with space >\n"
2017               "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"",
2018               getLLVMStyleWithColumns(35));
2019
2020  verifyFormat("#import <string>");
2021  verifyFormat("#import <a/b/c.h>");
2022  verifyFormat("#import \"a/b/string\"");
2023  verifyFormat("#import \"string.h\"");
2024  verifyFormat("#import \"string.h\"");
2025}
2026
2027//===----------------------------------------------------------------------===//
2028// Error recovery tests.
2029//===----------------------------------------------------------------------===//
2030
2031TEST_F(FormatTest, IncompleteParameterLists) {
2032  FormatStyle NoBinPacking = getLLVMStyle();
2033  NoBinPacking.BinPackParameters = false;
2034  verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n"
2035               "                        double *min_x,\n"
2036               "                        double *max_x,\n"
2037               "                        double *min_y,\n"
2038               "                        double *max_y,\n"
2039               "                        double *min_z,\n"
2040               "                        double *max_z, ) {}",
2041               NoBinPacking);
2042}
2043
2044TEST_F(FormatTest, IncorrectCodeTrailingStuff) {
2045  verifyFormat("void f() { return; }\n42");
2046  verifyFormat("void f() {\n"
2047               "  if (0)\n"
2048               "    return;\n"
2049               "}\n"
2050               "42");
2051  verifyFormat("void f() { return }\n42");
2052  verifyFormat("void f() {\n"
2053               "  if (0)\n"
2054               "    return\n"
2055               "}\n"
2056               "42");
2057}
2058
2059TEST_F(FormatTest, IncorrectCodeMissingSemicolon) {
2060  EXPECT_EQ("void f() { return }", format("void  f ( )  {  return  }"));
2061  EXPECT_EQ("void f() {\n"
2062            "  if (a)\n"
2063            "    return\n"
2064            "}",
2065            format("void  f  (  )  {  if  ( a )  return  }"));
2066  EXPECT_EQ("namespace N { void f() }", format("namespace  N  {  void f()  }"));
2067  EXPECT_EQ("namespace N {\n"
2068            "void f() {}\n"
2069            "void g()\n"
2070            "}",
2071            format("namespace N  { void f( ) { } void g( ) }"));
2072}
2073
2074TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) {
2075  verifyFormat("int aaaaaaaa =\n"
2076               "    // Overly long comment\n"
2077               "    b;",
2078               getLLVMStyleWithColumns(20));
2079  verifyFormat("function(\n"
2080               "    ShortArgument,\n"
2081               "    LoooooooooooongArgument);\n",
2082               getLLVMStyleWithColumns(20));
2083}
2084
2085TEST_F(FormatTest, IncorrectAccessSpecifier) {
2086  verifyFormat("public:");
2087  verifyFormat("class A {\n"
2088               "public\n"
2089               "  void f() {}\n"
2090               "};");
2091  verifyFormat("public\n"
2092               "int qwerty;");
2093  verifyFormat("public\n"
2094               "B {}");
2095  verifyFormat("public\n"
2096               "{}");
2097  verifyFormat("public\n"
2098               "B { int x; }");
2099}
2100
2101TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) { verifyFormat("{"); }
2102
2103TEST_F(FormatTest, IncorrectCodeDoNoWhile) {
2104  verifyFormat("do {\n}");
2105  verifyFormat("do {\n}\n"
2106               "f();");
2107  verifyFormat("do {\n}\n"
2108               "wheeee(fun);");
2109  verifyFormat("do {\n"
2110               "  f();\n"
2111               "}");
2112}
2113
2114TEST_F(FormatTest, IncorrectCodeMissingParens) {
2115  verifyFormat("if {\n  foo;\n  foo();\n}");
2116  verifyFormat("switch {\n  foo;\n  foo();\n}");
2117  verifyFormat("for {\n  foo;\n  foo();\n}");
2118  verifyFormat("while {\n  foo;\n  foo();\n}");
2119  verifyFormat("do {\n  foo;\n  foo();\n} while;");
2120}
2121
2122TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) {
2123  verifyFormat("namespace {\n"
2124               "class Foo {  Foo  ( }; }  // comment");
2125}
2126
2127TEST_F(FormatTest, IncorrectCodeErrorDetection) {
2128  EXPECT_EQ("{\n{}\n", format("{\n{\n}\n"));
2129  EXPECT_EQ("{\n  {}\n", format("{\n  {\n}\n"));
2130  EXPECT_EQ("{\n  {}\n", format("{\n  {\n  }\n"));
2131  EXPECT_EQ("{\n  {}\n  }\n}\n", format("{\n  {\n    }\n  }\n}\n"));
2132
2133  EXPECT_EQ("{\n"
2134            "    {\n"
2135            " breakme(\n"
2136            "     qwe);\n"
2137            "}\n",
2138            format("{\n"
2139                   "    {\n"
2140                   " breakme(qwe);\n"
2141                   "}\n",
2142                   getLLVMStyleWithColumns(10)));
2143}
2144
2145TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) {
2146  verifyFormat("int x = {\n"
2147               "  avariable,\n"
2148               "  b(alongervariable)\n"
2149               "};",
2150               getLLVMStyleWithColumns(25));
2151}
2152
2153TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) {
2154  verifyFormat("return (a)(b) { 1, 2, 3 };");
2155}
2156
2157TEST_F(FormatTest, LayoutTokensFollowingBlockInParentheses) {
2158  // FIXME: This is bad, find a better and more generic solution.
2159  verifyFormat(
2160      "Aaa({\n"
2161      "  int i;\n"
2162      "},\n"
2163      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n"
2164      "                                     ccccccccccccccccc));");
2165}
2166
2167TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) {
2168  verifyFormat("void f() { return 42; }");
2169  verifyFormat("void f() {\n"
2170               "  // Comment\n"
2171               "}");
2172  verifyFormat("{\n"
2173               "#error {\n"
2174               "  int a;\n"
2175               "}");
2176  verifyFormat("{\n"
2177               "  int a;\n"
2178               "#error {\n"
2179               "}");
2180
2181  verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23));
2182  verifyFormat("void f() {\n  return 42;\n}", getLLVMStyleWithColumns(22));
2183
2184  verifyFormat("void f() {}", getLLVMStyleWithColumns(11));
2185  verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10));
2186}
2187
2188TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) {
2189  // Elaborate type variable declarations.
2190  verifyFormat("struct foo a = { bar };\nint n;");
2191  verifyFormat("class foo a = { bar };\nint n;");
2192  verifyFormat("union foo a = { bar };\nint n;");
2193
2194  // Elaborate types inside function definitions.
2195  verifyFormat("struct foo f() {}\nint n;");
2196  verifyFormat("class foo f() {}\nint n;");
2197  verifyFormat("union foo f() {}\nint n;");
2198
2199  // Templates.
2200  verifyFormat("template <class X> void f() {}\nint n;");
2201  verifyFormat("template <struct X> void f() {}\nint n;");
2202  verifyFormat("template <union X> void f() {}\nint n;");
2203
2204  // Actual definitions...
2205  verifyFormat("struct {\n} n;");
2206  verifyFormat(
2207      "template <template <class T, class Y>, class Z> class X {\n} n;");
2208  verifyFormat("union Z {\n  int n;\n} x;");
2209  verifyFormat("class MACRO Z {\n} n;");
2210  verifyFormat("class MACRO(X) Z {\n} n;");
2211  verifyFormat("class __attribute__(X) Z {\n} n;");
2212  verifyFormat("class __declspec(X) Z {\n} n;");
2213  verifyFormat("class A##B##C {\n} n;");
2214
2215  // Redefinition from nested context:
2216  verifyFormat("class A::B::C {\n} n;");
2217
2218  // Template definitions.
2219  // FIXME: This is still incorrectly handled at the formatter side.
2220  verifyFormat("template <> struct X < 15, i < 3 && 42 < 50 && 33<28> {\n};");
2221
2222  // FIXME:
2223  // This now gets parsed incorrectly as class definition.
2224  // verifyFormat("class A<int> f() {\n}\nint n;");
2225
2226  // Elaborate types where incorrectly parsing the structural element would
2227  // break the indent.
2228  verifyFormat("if (true)\n"
2229               "  class X x;\n"
2230               "else\n"
2231               "  f();\n");
2232}
2233
2234TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) {
2235  verifyFormat("#error Leave     all         white!!!!! space* alone!\n");
2236  verifyFormat("#warning Leave     all         white!!!!! space* alone!\n");
2237  EXPECT_EQ("#error 1", format("  #  error   1"));
2238  EXPECT_EQ("#warning 1", format("  #  warning 1"));
2239}
2240
2241TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) {
2242  FormatStyle AllowsMergedIf = getGoogleStyle();
2243  AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true;
2244  verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf);
2245  verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf);
2246  verifyFormat("if (true)\n#error E\n  return 42;", AllowsMergedIf);
2247  EXPECT_EQ("if (true) return 42;",
2248            format("if (true)\nreturn 42;", AllowsMergedIf));
2249  FormatStyle ShortMergedIf = AllowsMergedIf;
2250  ShortMergedIf.ColumnLimit = 25;
2251  verifyFormat("#define A               \\\n"
2252               "  if (true) return 42;",
2253               ShortMergedIf);
2254  verifyFormat("#define A               \\\n"
2255               "  f();                  \\\n"
2256               "  if (true)\n"
2257               "#define B",
2258               ShortMergedIf);
2259  verifyFormat("#define A               \\\n"
2260               "  f();                  \\\n"
2261               "  if (true)\n"
2262               "g();",
2263               ShortMergedIf);
2264  verifyFormat("{\n"
2265               "#ifdef A\n"
2266               "  // Comment\n"
2267               "  if (true) continue;\n"
2268               "#endif\n"
2269               "  // Comment\n"
2270               "  if (true) continue;",
2271               ShortMergedIf);
2272}
2273
2274TEST_F(FormatTest, BlockCommentsInControlLoops) {
2275  verifyFormat("if (0) /* a comment in a strange place */ {\n"
2276               "  f();\n"
2277               "}");
2278  verifyFormat("if (0) /* a comment in a strange place */ {\n"
2279               "  f();\n"
2280               "} /* another comment */ else /* comment #3 */ {\n"
2281               "  g();\n"
2282               "}");
2283  verifyFormat("while (0) /* a comment in a strange place */ {\n"
2284               "  f();\n"
2285               "}");
2286  verifyFormat("for (;;) /* a comment in a strange place */ {\n"
2287               "  f();\n"
2288               "}");
2289  verifyFormat("do /* a comment in a strange place */ {\n"
2290               "  f();\n"
2291               "} /* another comment */ while (0);");
2292}
2293
2294TEST_F(FormatTest, BlockComments) {
2295  EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */",
2296            format("/* *//* */  /* */\n/* *//* */  /* */"));
2297  EXPECT_EQ("/* */ a /* */ b;", format("  /* */  a/* */  b;"));
2298  EXPECT_EQ("#define A /*   */\\\n"
2299            "  b\n"
2300            "/* */\n"
2301            "someCall(\n"
2302            "    parameter);",
2303            format("#define A /*   */ b\n"
2304                   "/* */\n"
2305                   "someCall(parameter);",
2306                   getLLVMStyleWithColumns(15)));
2307
2308  EXPECT_EQ("#define A\n"
2309            "/* */ someCall(\n"
2310            "    parameter);",
2311            format("#define A\n"
2312                   "/* */someCall(parameter);",
2313                   getLLVMStyleWithColumns(15)));
2314
2315  FormatStyle NoBinPacking = getLLVMStyle();
2316  NoBinPacking.BinPackParameters = false;
2317  EXPECT_EQ("someFunction(1, /* comment 1 */\n"
2318            "             2, /* comment 2 */\n"
2319            "             3, /* comment 3 */\n"
2320            "             aaaa,\n"
2321            "             bbbb);",
2322            format("someFunction (1,   /* comment 1 */\n"
2323                   "                2, /* comment 2 */  \n"
2324                   "               3,   /* comment 3 */\n"
2325                   "aaaa, bbbb );",
2326                   NoBinPacking));
2327  verifyFormat(
2328      "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2329      "                     aaaaaaaaaaaaaaaaaaaaaaaaaaaa;");
2330  EXPECT_EQ(
2331      "bool aaaaaaaaaaaaa = /* trailing comment */\n"
2332      "    aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n"
2333      "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;",
2334      format(
2335          "bool       aaaaaaaaaaaaa =       /* trailing comment */\n"
2336          "    aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa    ||\n"
2337          "    aaaaaaaaaaaaaaaaaaaaaaaaaaaa   || aaaaaaaaaaaaaaaaaaaaaaaaaa;"));
2338  EXPECT_EQ(
2339      "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
2340      "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;   /* comment */\n"
2341      "int cccccccccccccccccccccccccccccc;       /* comment */\n",
2342      format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n"
2343             "int      bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n"
2344             "int    cccccccccccccccccccccccccccccc;  /* comment */\n"));
2345}
2346
2347TEST_F(FormatTest, BlockCommentsInMacros) {
2348  EXPECT_EQ("#define A          \\\n"
2349            "  {                \\\n"
2350            "    /* one line */ \\\n"
2351            "    someCall();",
2352            format("#define A {        \\\n"
2353                   "  /* one line */   \\\n"
2354                   "  someCall();",
2355                   getLLVMStyleWithColumns(20)));
2356  EXPECT_EQ("#define A          \\\n"
2357            "  {                \\\n"
2358            "    /* previous */ \\\n"
2359            "    /* one line */ \\\n"
2360            "    someCall();",
2361            format("#define A {        \\\n"
2362                   "  /* previous */   \\\n"
2363                   "  /* one line */   \\\n"
2364                   "  someCall();",
2365                   getLLVMStyleWithColumns(20)));
2366}
2367
2368TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) {
2369  // FIXME: This is not what we want...
2370  verifyFormat("{\n"
2371               "// a"
2372               "// b");
2373}
2374
2375TEST_F(FormatTest, FormatStarDependingOnContext) {
2376  verifyFormat("void f(int *a);");
2377  verifyFormat("void f() { f(fint * b); }");
2378  verifyFormat("class A {\n  void f(int *a);\n};");
2379  verifyFormat("class A {\n  int *a;\n};");
2380  verifyFormat("namespace a {\n"
2381               "namespace b {\n"
2382               "class A {\n"
2383               "  void f() {}\n"
2384               "  int *a;\n"
2385               "};\n"
2386               "}\n"
2387               "}");
2388}
2389
2390TEST_F(FormatTest, SpecialTokensAtEndOfLine) {
2391  verifyFormat("while");
2392  verifyFormat("operator");
2393}
2394
2395//===----------------------------------------------------------------------===//
2396// Objective-C tests.
2397//===----------------------------------------------------------------------===//
2398
2399TEST_F(FormatTest, FormatForObjectiveCMethodDecls) {
2400  verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;");
2401  EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;",
2402            format("-(NSUInteger)indexOfObject:(id)anObject;"));
2403  EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;"));
2404  EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;"));
2405  EXPECT_EQ("- (NSInteger)Method3:(id)anObject;",
2406            format("-(NSInteger)Method3:(id)anObject;"));
2407  EXPECT_EQ("- (NSInteger)Method4:(id)anObject;",
2408            format("-(NSInteger)Method4:(id)anObject;"));
2409  EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;",
2410            format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;"));
2411  EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;",
2412            format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;"));
2413  EXPECT_EQ(
2414      "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;",
2415      format(
2416          "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;"));
2417
2418  // Very long objectiveC method declaration.
2419  verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n"
2420               "                    inRange:(NSRange)range\n"
2421               "                   outRange:(NSRange)out_range\n"
2422               "                  outRange1:(NSRange)out_range1\n"
2423               "                  outRange2:(NSRange)out_range2\n"
2424               "                  outRange3:(NSRange)out_range3\n"
2425               "                  outRange4:(NSRange)out_range4\n"
2426               "                  outRange5:(NSRange)out_range5\n"
2427               "                  outRange6:(NSRange)out_range6\n"
2428               "                  outRange7:(NSRange)out_range7\n"
2429               "                  outRange8:(NSRange)out_range8\n"
2430               "                  outRange9:(NSRange)out_range9;");
2431
2432  verifyFormat("- (int)sum:(vector<int>)numbers;");
2433  verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;");
2434  // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC
2435  // protocol lists (but not for template classes):
2436  //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;");
2437
2438  verifyFormat("- (int(*)())foo:(int(*)())f;");
2439  verifyGoogleFormat("- (int(*)())foo:(int(*)())foo;");
2440
2441  // If there's no return type (very rare in practice!), LLVM and Google style
2442  // agree.
2443  verifyFormat("- foo:(int)f;");
2444  verifyGoogleFormat("- foo:(int)foo;");
2445}
2446
2447TEST_F(FormatTest, FormatObjCBlocks) {
2448  verifyFormat("int (^Block)(int, int);");
2449  verifyFormat("int (^Block1)(int, int) = ^(int i, int j)");
2450}
2451
2452TEST_F(FormatTest, FormatObjCInterface) {
2453  verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n"
2454               "@public\n"
2455               "  int field1;\n"
2456               "@protected\n"
2457               "  int field2;\n"
2458               "@private\n"
2459               "  int field3;\n"
2460               "@package\n"
2461               "  int field4;\n"
2462               "}\n"
2463               "+ (id)init;\n"
2464               "@end");
2465
2466  verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n"
2467                     " @public\n"
2468                     "  int field1;\n"
2469                     " @protected\n"
2470                     "  int field2;\n"
2471                     " @private\n"
2472                     "  int field3;\n"
2473                     " @package\n"
2474                     "  int field4;\n"
2475                     "}\n"
2476                     "+ (id)init;\n"
2477                     "@end");
2478
2479  verifyFormat("@interface /* wait for it */ Foo\n"
2480               "+ (id)init;\n"
2481               "// Look, a comment!\n"
2482               "- (int)answerWith:(int)i;\n"
2483               "@end");
2484
2485  verifyFormat("@interface Foo\n"
2486               "@end\n"
2487               "@interface Bar\n"
2488               "@end");
2489
2490  verifyFormat("@interface Foo : Bar\n"
2491               "+ (id)init;\n"
2492               "@end");
2493
2494  verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n"
2495               "+ (id)init;\n"
2496               "@end");
2497
2498  verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n"
2499                     "+ (id)init;\n"
2500                     "@end");
2501
2502  verifyFormat("@interface Foo (HackStuff)\n"
2503               "+ (id)init;\n"
2504               "@end");
2505
2506  verifyFormat("@interface Foo ()\n"
2507               "+ (id)init;\n"
2508               "@end");
2509
2510  verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n"
2511               "+ (id)init;\n"
2512               "@end");
2513
2514  verifyGoogleFormat("@interface Foo (HackStuff)<MyProtocol>\n"
2515                     "+ (id)init;\n"
2516                     "@end");
2517
2518  verifyFormat("@interface Foo {\n"
2519               "  int _i;\n"
2520               "}\n"
2521               "+ (id)init;\n"
2522               "@end");
2523
2524  verifyFormat("@interface Foo : Bar {\n"
2525               "  int _i;\n"
2526               "}\n"
2527               "+ (id)init;\n"
2528               "@end");
2529
2530  verifyFormat("@interface Foo : Bar <Baz, Quux> {\n"
2531               "  int _i;\n"
2532               "}\n"
2533               "+ (id)init;\n"
2534               "@end");
2535
2536  verifyFormat("@interface Foo (HackStuff) {\n"
2537               "  int _i;\n"
2538               "}\n"
2539               "+ (id)init;\n"
2540               "@end");
2541
2542  verifyFormat("@interface Foo () {\n"
2543               "  int _i;\n"
2544               "}\n"
2545               "+ (id)init;\n"
2546               "@end");
2547
2548  verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n"
2549               "  int _i;\n"
2550               "}\n"
2551               "+ (id)init;\n"
2552               "@end");
2553}
2554
2555TEST_F(FormatTest, FormatObjCImplementation) {
2556  verifyFormat("@implementation Foo : NSObject {\n"
2557               "@public\n"
2558               "  int field1;\n"
2559               "@protected\n"
2560               "  int field2;\n"
2561               "@private\n"
2562               "  int field3;\n"
2563               "@package\n"
2564               "  int field4;\n"
2565               "}\n"
2566               "+ (id)init {\n}\n"
2567               "@end");
2568
2569  verifyGoogleFormat("@implementation Foo : NSObject {\n"
2570                     " @public\n"
2571                     "  int field1;\n"
2572                     " @protected\n"
2573                     "  int field2;\n"
2574                     " @private\n"
2575                     "  int field3;\n"
2576                     " @package\n"
2577                     "  int field4;\n"
2578                     "}\n"
2579                     "+ (id)init {\n}\n"
2580                     "@end");
2581
2582  verifyFormat("@implementation Foo\n"
2583               "+ (id)init {\n"
2584               "  if (true)\n"
2585               "    return nil;\n"
2586               "}\n"
2587               "// Look, a comment!\n"
2588               "- (int)answerWith:(int)i {\n"
2589               "  return i;\n"
2590               "}\n"
2591               "+ (int)answerWith:(int)i {\n"
2592               "  return i;\n"
2593               "}\n"
2594               "@end");
2595
2596  verifyFormat("@implementation Foo\n"
2597               "@end\n"
2598               "@implementation Bar\n"
2599               "@end");
2600
2601  verifyFormat("@implementation Foo : Bar\n"
2602               "+ (id)init {\n}\n"
2603               "- (void)foo {\n}\n"
2604               "@end");
2605
2606  verifyFormat("@implementation Foo {\n"
2607               "  int _i;\n"
2608               "}\n"
2609               "+ (id)init {\n}\n"
2610               "@end");
2611
2612  verifyFormat("@implementation Foo : Bar {\n"
2613               "  int _i;\n"
2614               "}\n"
2615               "+ (id)init {\n}\n"
2616               "@end");
2617
2618  verifyFormat("@implementation Foo (HackStuff)\n"
2619               "+ (id)init {\n}\n"
2620               "@end");
2621}
2622
2623TEST_F(FormatTest, FormatObjCProtocol) {
2624  verifyFormat("@protocol Foo\n"
2625               "@property(weak) id delegate;\n"
2626               "- (NSUInteger)numberOfThings;\n"
2627               "@end");
2628
2629  verifyFormat("@protocol MyProtocol <NSObject>\n"
2630               "- (NSUInteger)numberOfThings;\n"
2631               "@end");
2632
2633  verifyGoogleFormat("@protocol MyProtocol<NSObject>\n"
2634                     "- (NSUInteger)numberOfThings;\n"
2635                     "@end");
2636
2637  verifyFormat("@protocol Foo;\n"
2638               "@protocol Bar;\n");
2639
2640  verifyFormat("@protocol Foo\n"
2641               "@end\n"
2642               "@protocol Bar\n"
2643               "@end");
2644
2645  verifyFormat("@protocol myProtocol\n"
2646               "- (void)mandatoryWithInt:(int)i;\n"
2647               "@optional\n"
2648               "- (void)optional;\n"
2649               "@required\n"
2650               "- (void)required;\n"
2651               "@optional\n"
2652               "@property(assign) int madProp;\n"
2653               "@end\n");
2654}
2655
2656TEST_F(FormatTest, FormatObjCMethodDeclarations) {
2657  verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n"
2658               "                   rect:(NSRect)theRect\n"
2659               "               interval:(float)theInterval {\n"
2660               "}");
2661  verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n"
2662               "          longKeyword:(NSRect)theRect\n"
2663               "    evenLongerKeyword:(float)theInterval\n"
2664               "                error:(NSError **)theError {\n"
2665               "}");
2666}
2667
2668TEST_F(FormatTest, FormatObjCMethodExpr) {
2669  verifyFormat("[foo bar:baz];");
2670  verifyFormat("return [foo bar:baz];");
2671  verifyFormat("f([foo bar:baz]);");
2672  verifyFormat("f(2, [foo bar:baz]);");
2673  verifyFormat("f(2, a ? b : c);");
2674  verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];");
2675
2676  // Unary operators.
2677  verifyFormat("int a = +[foo bar:baz];");
2678  verifyFormat("int a = -[foo bar:baz];");
2679  verifyFormat("int a = ![foo bar:baz];");
2680  verifyFormat("int a = ~[foo bar:baz];");
2681  verifyFormat("int a = ++[foo bar:baz];");
2682  verifyFormat("int a = --[foo bar:baz];");
2683  verifyFormat("int a = sizeof [foo bar:baz];");
2684  verifyFormat("int a = alignof [foo bar:baz];");
2685  verifyFormat("int a = &[foo bar:baz];");
2686  verifyFormat("int a = *[foo bar:baz];");
2687  // FIXME: Make casts work, without breaking f()[4].
2688  //verifyFormat("int a = (int)[foo bar:baz];");
2689  //verifyFormat("return (int)[foo bar:baz];");
2690  //verifyFormat("(void)[foo bar:baz];");
2691  verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];");
2692
2693  // Binary operators.
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];");
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] : [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  verifyFormat("[foo bar:baz] > [foo bar:baz];");
2717  verifyFormat("[foo bar:baz] < [foo bar:baz];");
2718  verifyFormat("[foo bar:baz] >> [foo bar:baz];");
2719  verifyFormat("[foo bar:baz] << [foo bar:baz];");
2720  verifyFormat("[foo bar:baz] - [foo bar:baz];");
2721  verifyFormat("[foo bar:baz] + [foo bar:baz];");
2722  verifyFormat("[foo bar:baz] * [foo bar:baz];");
2723  verifyFormat("[foo bar:baz] / [foo bar:baz];");
2724  verifyFormat("[foo bar:baz] % [foo bar:baz];");
2725  // Whew!
2726
2727  verifyFormat("return in[42];");
2728  verifyFormat("for (id foo in [self getStuffFor:bla]) {\n"
2729               "}");
2730
2731  verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];");
2732  verifyFormat("[self stuffWithInt:a ? b : c float:4.5];");
2733  verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];");
2734  verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];");
2735  verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]");
2736  verifyFormat("[button setAction:@selector(zoomOut:)];");
2737  verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];");
2738
2739  verifyFormat("arr[[self indexForFoo:a]];");
2740  verifyFormat("throw [self errorFor:a];");
2741  verifyFormat("@throw [self errorFor:a];");
2742
2743  // This tests that the formatter doesn't break after "backing" but before ":",
2744  // which would be at 80 columns.
2745  verifyFormat(
2746      "void f() {\n"
2747      "  if ((self = [super initWithContentRect:contentRect\n"
2748      "                               styleMask:styleMask\n"
2749      "                                 backing:NSBackingStoreBuffered\n"
2750      "                                   defer:YES]))");
2751
2752  verifyFormat(
2753      "[foo checkThatBreakingAfterColonWorksOk:\n"
2754      "        [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];");
2755
2756  verifyFormat("[myObj short:arg1 // Force line break\n"
2757               "          longKeyword:arg2\n"
2758               "    evenLongerKeyword:arg3\n"
2759               "                error:arg4];");
2760  verifyFormat(
2761      "void f() {\n"
2762      "  popup_window_.reset([[RenderWidgetPopupWindow alloc]\n"
2763      "      initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n"
2764      "                                     pos.width(), pos.height())\n"
2765      "                styleMask:NSBorderlessWindowMask\n"
2766      "                  backing:NSBackingStoreBuffered\n"
2767      "                    defer:NO]);\n"
2768      "}");
2769  verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n"
2770               "                             with:contentsNativeView];");
2771
2772  verifyFormat(
2773      "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n"
2774      "           owner:nillllll];");
2775
2776  verifyFormat(
2777      "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n"
2778      "        forType:kBookmarkButtonDragType];");
2779
2780  verifyFormat("[defaultCenter addObserver:self\n"
2781               "                  selector:@selector(willEnterFullscreen)\n"
2782               "                      name:kWillEnterFullscreenNotification\n"
2783               "                    object:nil];");
2784  verifyFormat("[image_rep drawInRect:drawRect\n"
2785               "             fromRect:NSZeroRect\n"
2786               "            operation:NSCompositeCopy\n"
2787               "             fraction:1.0\n"
2788               "       respectFlipped:NO\n"
2789               "                hints:nil];");
2790
2791  verifyFormat(
2792      "scoped_nsobject<NSTextField> message(\n"
2793      "    // The frame will be fixed up when |-setMessageText:| is called.\n"
2794      "    [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);");
2795}
2796
2797TEST_F(FormatTest, ObjCAt) {
2798  verifyFormat("@autoreleasepool");
2799  verifyFormat("@catch");
2800  verifyFormat("@class");
2801  verifyFormat("@compatibility_alias");
2802  verifyFormat("@defs");
2803  verifyFormat("@dynamic");
2804  verifyFormat("@encode");
2805  verifyFormat("@end");
2806  verifyFormat("@finally");
2807  verifyFormat("@implementation");
2808  verifyFormat("@import");
2809  verifyFormat("@interface");
2810  verifyFormat("@optional");
2811  verifyFormat("@package");
2812  verifyFormat("@private");
2813  verifyFormat("@property");
2814  verifyFormat("@protected");
2815  verifyFormat("@protocol");
2816  verifyFormat("@public");
2817  verifyFormat("@required");
2818  verifyFormat("@selector");
2819  verifyFormat("@synchronized");
2820  verifyFormat("@synthesize");
2821  verifyFormat("@throw");
2822  verifyFormat("@try");
2823
2824  EXPECT_EQ("@interface", format("@ interface"));
2825
2826  // The precise formatting of this doesn't matter, nobody writes code like
2827  // this.
2828  verifyFormat("@ /*foo*/ interface");
2829}
2830
2831TEST_F(FormatTest, ObjCSnippets) {
2832  verifyFormat("@autoreleasepool {\n"
2833               "  foo();\n"
2834               "}");
2835  verifyFormat("@class Foo, Bar;");
2836  verifyFormat("@compatibility_alias AliasName ExistingClass;");
2837  verifyFormat("@dynamic textColor;");
2838  verifyFormat("char *buf1 = @encode(int *);");
2839  verifyFormat("char *buf1 = @encode(typeof(4 * 5));");
2840  verifyFormat("char *buf1 = @encode(int **);");
2841  verifyFormat("Protocol *proto = @protocol(p1);");
2842  verifyFormat("SEL s = @selector(foo:);");
2843  verifyFormat("@synchronized(self) {\n"
2844               "  f();\n"
2845               "}");
2846
2847  verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
2848  verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;");
2849
2850  verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;");
2851  verifyFormat("@property(assign, getter=isEditable) BOOL editable;");
2852  verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;");
2853}
2854
2855TEST_F(FormatTest, ObjCLiterals) {
2856  verifyFormat("@\"String\"");
2857  verifyFormat("@1");
2858  verifyFormat("@+4.8");
2859  verifyFormat("@-4");
2860  verifyFormat("@1LL");
2861  verifyFormat("@.5");
2862  verifyFormat("@'c'");
2863  verifyFormat("@true");
2864
2865  verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);");
2866  verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);");
2867  verifyFormat("NSNumber *favoriteColor = @(Green);");
2868  verifyFormat("NSString *path = @(getenv(\"PATH\"));");
2869
2870  verifyFormat("@[");
2871  verifyFormat("@[]");
2872  verifyFormat(
2873      "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];");
2874  verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];");
2875
2876  verifyFormat("@{");
2877  verifyFormat("@{}");
2878  verifyFormat("@{ @\"one\" : @1 }");
2879  verifyFormat("return @{ @\"one\" : @1 };");
2880  verifyFormat("@{ @\"one\" : @1, }");
2881  verifyFormat("@{ @\"one\" : @{ @2 : @1 } }");
2882  verifyFormat("@{ @\"one\" : @{ @2 : @1 }, }");
2883  verifyFormat("@{ 1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2 }");
2884  verifyFormat("[self setDict:@{}");
2885  verifyFormat("[self setDict:@{ @1 : @2 }");
2886  verifyFormat("NSLog(@\"%@\", @{ @1 : @2, @2 : @3 }[@1]);");
2887  verifyFormat(
2888      "NSDictionary *masses = @{ @\"H\" : @1.0078, @\"He\" : @4.0026 };");
2889  verifyFormat(
2890      "NSDictionary *settings = @{ AVEncoderKey : @(AVAudioQualityMax) };");
2891
2892  // FIXME: Nested and multi-line array and dictionary literals need more work.
2893  verifyFormat(
2894      "NSDictionary *d = @{ @\"nam\" : NSUserNam(), @\"dte\" : [NSDate date],\n"
2895      "                     @\"processInfo\" : [NSProcessInfo processInfo] };");
2896}
2897
2898TEST_F(FormatTest, ReformatRegionAdjustsIndent) {
2899  EXPECT_EQ("{\n"
2900            "{\n"
2901            "a;\n"
2902            "b;\n"
2903            "}\n"
2904            "}",
2905            format("{\n"
2906                   "{\n"
2907                   "a;\n"
2908                   "     b;\n"
2909                   "}\n"
2910                   "}",
2911                   13, 2, getLLVMStyle()));
2912  EXPECT_EQ("{\n"
2913            "{\n"
2914            "  a;\n"
2915            "b;\n"
2916            "}\n"
2917            "}",
2918            format("{\n"
2919                   "{\n"
2920                   "     a;\n"
2921                   "b;\n"
2922                   "}\n"
2923                   "}",
2924                   9, 2, getLLVMStyle()));
2925  EXPECT_EQ("{\n"
2926            "{\n"
2927            "public:\n"
2928            "  b;\n"
2929            "}\n"
2930            "}",
2931            format("{\n"
2932                   "{\n"
2933                   "public:\n"
2934                   "     b;\n"
2935                   "}\n"
2936                   "}",
2937                   17, 2, getLLVMStyle()));
2938  EXPECT_EQ("{\n"
2939            "{\n"
2940            "a;\n"
2941            "}\n"
2942            "{\n"
2943            "  b;\n"
2944            "}\n"
2945            "}",
2946            format("{\n"
2947                   "{\n"
2948                   "a;\n"
2949                   "}\n"
2950                   "{\n"
2951                   "           b;\n"
2952                   "}\n"
2953                   "}",
2954                   22, 2, getLLVMStyle()));
2955  EXPECT_EQ("  {\n"
2956            "    a;\n"
2957            "  }",
2958            format("  {\n"
2959                   "a;\n"
2960                   "  }",
2961                   4, 2, getLLVMStyle()));
2962  EXPECT_EQ("void f() {}\n"
2963            "void g() {}",
2964            format("void f() {}\n"
2965                   "void g() {}",
2966                   13, 0, getLLVMStyle()));
2967}
2968
2969TEST_F(FormatTest, BreakStringLiterals) {
2970  EXPECT_EQ("\"some text \"\n"
2971            "\"other\";",
2972            format("\"some text other\";", getLLVMStyleWithColumns(12)));
2973  EXPECT_EQ(
2974      "#define A  \\\n"
2975      "  \"some \"  \\\n"
2976      "  \"text \"  \\\n"
2977      "  \"other\";",
2978      format("#define A \"some text other\";", getLLVMStyleWithColumns(12)));
2979  EXPECT_EQ(
2980      "#define A  \\\n"
2981      "  \"so \"    \\\n"
2982      "  \"text \"  \\\n"
2983      "  \"other\";",
2984      format("#define A \"so text other\";", getLLVMStyleWithColumns(12)));
2985
2986  EXPECT_EQ("\"some text\"",
2987            format("\"some text\"", getLLVMStyleWithColumns(1)));
2988  EXPECT_EQ("\"some text\"",
2989            format("\"some text\"", getLLVMStyleWithColumns(11)));
2990  EXPECT_EQ("\"some \"\n"
2991            "\"text\"",
2992            format("\"some text\"", getLLVMStyleWithColumns(10)));
2993  EXPECT_EQ("\"some \"\n"
2994            "\"text\"",
2995            format("\"some text\"", getLLVMStyleWithColumns(7)));
2996  EXPECT_EQ("\"some text\"",
2997            format("\"some text\"", getLLVMStyleWithColumns(6)));
2998
2999  EXPECT_EQ("variable =\n"
3000            "    \"long string \"\n"
3001            "    \"literal\";",
3002            format("variable = \"long string literal\";",
3003                   getLLVMStyleWithColumns(20)));
3004
3005  EXPECT_EQ("variable = f(\n"
3006            "    \"long string \"\n"
3007            "    \"literal\",\n"
3008            "    short,\n"
3009            "    loooooooooooooooooooong);",
3010            format("variable = f(\"long string literal\", short, "
3011                   "loooooooooooooooooooong);",
3012                   getLLVMStyleWithColumns(20)));
3013  EXPECT_EQ(
3014      "f(\"one two\".split(\n"
3015      "    variable));",
3016      format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20)));
3017  EXPECT_EQ("f(\"one two three four five six \"\n"
3018            "  \"seven\".split(\n"
3019            "      really_looooong_variable));",
3020            format("f(\"one two three four five six seven\"."
3021                   "split(really_looooong_variable));",
3022                   getLLVMStyleWithColumns(33)));
3023
3024  EXPECT_EQ("f(\"some \"\n"
3025            "  \"text\",\n"
3026            "  other);",
3027            format("f(\"some text\", other);", getLLVMStyleWithColumns(10)));
3028
3029  // Only break as a last resort.
3030  verifyFormat(
3031      "aaaaaaaaaaaaaaaaaaaa(\n"
3032      "    aaaaaaaaaaaaaaaaaaaa,\n"
3033      "    aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));");
3034}
3035
3036} // end namespace tooling
3037} // end namespace clang
3038