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 #include "FormatTestUtils.h" 11 #include "clang/Format/Format.h" 12 #include "llvm/Support/Debug.h" 13 #include "gtest/gtest.h" 14 15 #define DEBUG_TYPE "format-test" 16 17 namespace clang { 18 namespace format { 19 20 FormatStyle getGoogleStyle() { 21 return getGoogleStyle(FormatStyle::LK_Cpp); 22 } 23 24 class FormatTest : public ::testing::Test { 25 protected: 26 std::string format(llvm::StringRef Code, unsigned Offset, unsigned Length, 27 const FormatStyle &Style) { 28 DEBUG(llvm::errs() << "---\n"); 29 DEBUG(llvm::errs() << Code << "\n\n"); 30 std::vector<tooling::Range> Ranges(1, tooling::Range(Offset, Length)); 31 tooling::Replacements Replaces = reformat(Style, Code, Ranges); 32 ReplacementCount = Replaces.size(); 33 std::string Result = applyAllReplacements(Code, Replaces); 34 EXPECT_NE("", Result); 35 DEBUG(llvm::errs() << "\n" << Result << "\n\n"); 36 return Result; 37 } 38 39 std::string 40 format(llvm::StringRef Code, const FormatStyle &Style = getLLVMStyle()) { 41 return format(Code, 0, Code.size(), Style); 42 } 43 44 FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) { 45 FormatStyle Style = getLLVMStyle(); 46 Style.ColumnLimit = ColumnLimit; 47 return Style; 48 } 49 50 FormatStyle getGoogleStyleWithColumns(unsigned ColumnLimit) { 51 FormatStyle Style = getGoogleStyle(); 52 Style.ColumnLimit = ColumnLimit; 53 return Style; 54 } 55 56 void verifyFormat(llvm::StringRef Code, 57 const FormatStyle &Style = getLLVMStyle()) { 58 EXPECT_EQ(Code.str(), format(test::messUp(Code), Style)); 59 } 60 61 void verifyGoogleFormat(llvm::StringRef Code) { 62 verifyFormat(Code, getGoogleStyle()); 63 } 64 65 void verifyIndependentOfContext(llvm::StringRef text) { 66 verifyFormat(text); 67 verifyFormat(llvm::Twine("void f() { " + text + " }").str()); 68 } 69 70 int ReplacementCount; 71 }; 72 73 TEST_F(FormatTest, MessUp) { 74 EXPECT_EQ("1 2 3", test::messUp("1 2 3")); 75 EXPECT_EQ("1 2 3\n", test::messUp("1\n2\n3\n")); 76 EXPECT_EQ("a\n//b\nc", test::messUp("a\n//b\nc")); 77 EXPECT_EQ("a\n#b\nc", test::messUp("a\n#b\nc")); 78 EXPECT_EQ("a\n#b c d\ne", test::messUp("a\n#b\\\nc\\\nd\ne")); 79 } 80 81 //===----------------------------------------------------------------------===// 82 // Basic function tests. 83 //===----------------------------------------------------------------------===// 84 85 TEST_F(FormatTest, DoesNotChangeCorrectlyFormattedCode) { 86 EXPECT_EQ(";", format(";")); 87 } 88 89 TEST_F(FormatTest, FormatsGlobalStatementsAt0) { 90 EXPECT_EQ("int i;", format(" int i;")); 91 EXPECT_EQ("\nint i;", format(" \n\t \v \f int i;")); 92 EXPECT_EQ("int i;\nint j;", format(" int i; int j;")); 93 EXPECT_EQ("int i;\nint j;", format(" int i;\n int j;")); 94 } 95 96 TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) { 97 EXPECT_EQ("int i;", format("int\ni;")); 98 } 99 100 TEST_F(FormatTest, FormatsNestedBlockStatements) { 101 EXPECT_EQ("{\n {\n {}\n }\n}", format("{{{}}}")); 102 } 103 104 TEST_F(FormatTest, FormatsNestedCall) { 105 verifyFormat("Method(f1, f2(f3));"); 106 verifyFormat("Method(f1(f2, f3()));"); 107 verifyFormat("Method(f1(f2, (f3())));"); 108 } 109 110 TEST_F(FormatTest, NestedNameSpecifiers) { 111 verifyFormat("vector<::Type> v;"); 112 verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())"); 113 verifyFormat("static constexpr bool Bar = decltype(bar())::value;"); 114 } 115 116 TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) { 117 EXPECT_EQ("if (a) {\n" 118 " f();\n" 119 "}", 120 format("if(a){f();}")); 121 EXPECT_EQ(4, ReplacementCount); 122 EXPECT_EQ("if (a) {\n" 123 " f();\n" 124 "}", 125 format("if (a) {\n" 126 " f();\n" 127 "}")); 128 EXPECT_EQ(0, ReplacementCount); 129 } 130 131 TEST_F(FormatTest, RemovesTrailingWhitespaceOfFormattedLine) { 132 EXPECT_EQ("int a;\nint b;", format("int a; \nint b;", 0, 0, getLLVMStyle())); 133 EXPECT_EQ("int a;", format("int a; ")); 134 EXPECT_EQ("int a;\n", format("int a; \n \n \n ")); 135 EXPECT_EQ("int a;\nint b; ", 136 format("int a; \nint b; ", 0, 0, getLLVMStyle())); 137 } 138 139 TEST_F(FormatTest, FormatsCorrectRegionForLeadingWhitespace) { 140 EXPECT_EQ("int b;\nint a;", 141 format("int b;\n int a;", 7, 0, getLLVMStyle())); 142 EXPECT_EQ("int b;\n int a;", 143 format("int b;\n int a;", 6, 0, getLLVMStyle())); 144 145 EXPECT_EQ("#define A \\\n" 146 " int a; \\\n" 147 " int b;", 148 format("#define A \\\n" 149 " int a; \\\n" 150 " int b;", 151 26, 0, getLLVMStyleWithColumns(12))); 152 EXPECT_EQ("#define A \\\n" 153 " int a; \\\n" 154 " int b;", 155 format("#define A \\\n" 156 " int a; \\\n" 157 " int b;", 158 25, 0, getLLVMStyleWithColumns(12))); 159 } 160 161 TEST_F(FormatTest, RemovesWhitespaceWhenTriggeredOnEmptyLine) { 162 EXPECT_EQ("int a;\n\n int b;", 163 format("int a;\n \n\n int b;", 7, 0, getLLVMStyle())); 164 EXPECT_EQ("int a;\n\n int b;", 165 format("int a;\n \n\n int b;", 9, 0, getLLVMStyle())); 166 } 167 168 TEST_F(FormatTest, RemovesEmptyLines) { 169 EXPECT_EQ("class C {\n" 170 " int i;\n" 171 "};", 172 format("class C {\n" 173 " int i;\n" 174 "\n" 175 "};")); 176 177 // Don't remove empty lines at the start of namespaces. 178 EXPECT_EQ("namespace N {\n" 179 "\n" 180 "int i;\n" 181 "}", 182 format("namespace N {\n" 183 "\n" 184 "int i;\n" 185 "}", 186 getGoogleStyle())); 187 188 // Remove empty lines at the beginning and end of blocks. 189 EXPECT_EQ("void f() {\n" 190 "\n" 191 " if (a) {\n" 192 "\n" 193 " f();\n" 194 " }\n" 195 "}", 196 format("void f() {\n" 197 "\n" 198 " if (a) {\n" 199 "\n" 200 " f();\n" 201 "\n" 202 " }\n" 203 "\n" 204 "}", 205 getLLVMStyle())); 206 EXPECT_EQ("void f() {\n" 207 " if (a) {\n" 208 " f();\n" 209 " }\n" 210 "}", 211 format("void f() {\n" 212 "\n" 213 " if (a) {\n" 214 "\n" 215 " f();\n" 216 "\n" 217 " }\n" 218 "\n" 219 "}", 220 getGoogleStyle())); 221 222 // Don't remove empty lines in more complex control statements. 223 EXPECT_EQ("void f() {\n" 224 " if (a) {\n" 225 " f();\n" 226 "\n" 227 " } else if (b) {\n" 228 " f();\n" 229 " }\n" 230 "}", 231 format("void f() {\n" 232 " if (a) {\n" 233 " f();\n" 234 "\n" 235 " } else if (b) {\n" 236 " f();\n" 237 "\n" 238 " }\n" 239 "\n" 240 "}")); 241 242 // FIXME: This is slightly inconsistent. 243 EXPECT_EQ("namespace {\n" 244 "int i;\n" 245 "}", 246 format("namespace {\n" 247 "int i;\n" 248 "\n" 249 "}")); 250 EXPECT_EQ("namespace {\n" 251 "int i;\n" 252 "\n" 253 "} // namespace", 254 format("namespace {\n" 255 "int i;\n" 256 "\n" 257 "} // namespace")); 258 } 259 260 TEST_F(FormatTest, ReformatsMovedLines) { 261 EXPECT_EQ( 262 "template <typename T> T *getFETokenInfo() const {\n" 263 " return static_cast<T *>(FETokenInfo);\n" 264 "}\n" 265 " int a; // <- Should not be formatted", 266 format( 267 "template<typename T>\n" 268 "T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }\n" 269 " int a; // <- Should not be formatted", 270 9, 5, getLLVMStyle())); 271 } 272 273 TEST_F(FormatTest, RecognizesBinaryOperatorKeywords) { 274 verifyFormat("x = (a) and (b);"); 275 verifyFormat("x = (a) or (b);"); 276 verifyFormat("x = (a) bitand (b);"); 277 verifyFormat("x = (a) bitor (b);"); 278 verifyFormat("x = (a) not_eq (b);"); 279 verifyFormat("x = (a) and_eq (b);"); 280 verifyFormat("x = (a) or_eq (b);"); 281 verifyFormat("x = (a) xor (b);"); 282 } 283 284 //===----------------------------------------------------------------------===// 285 // Tests for control statements. 286 //===----------------------------------------------------------------------===// 287 288 TEST_F(FormatTest, FormatIfWithoutCompoundStatement) { 289 verifyFormat("if (true)\n f();\ng();"); 290 verifyFormat("if (a)\n if (b)\n if (c)\n g();\nh();"); 291 verifyFormat("if (a)\n if (b) {\n f();\n }\ng();"); 292 293 FormatStyle AllowsMergedIf = getLLVMStyle(); 294 AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; 295 verifyFormat("if (a)\n" 296 " // comment\n" 297 " f();", 298 AllowsMergedIf); 299 verifyFormat("if (a)\n" 300 " ;", 301 AllowsMergedIf); 302 verifyFormat("if (a)\n" 303 " if (b) return;", 304 AllowsMergedIf); 305 306 verifyFormat("if (a) // Can't merge this\n" 307 " f();\n", 308 AllowsMergedIf); 309 verifyFormat("if (a) /* still don't merge */\n" 310 " f();", 311 AllowsMergedIf); 312 verifyFormat("if (a) { // Never merge this\n" 313 " f();\n" 314 "}", 315 AllowsMergedIf); 316 verifyFormat("if (a) {/* Never merge this */\n" 317 " f();\n" 318 "}", 319 AllowsMergedIf); 320 321 EXPECT_EQ("if (a) return;", format("if(a)\nreturn;", 7, 1, AllowsMergedIf)); 322 EXPECT_EQ("if (a) return; // comment", 323 format("if(a)\nreturn; // comment", 20, 1, AllowsMergedIf)); 324 325 AllowsMergedIf.ColumnLimit = 14; 326 verifyFormat("if (a) return;", AllowsMergedIf); 327 verifyFormat("if (aaaaaaaaa)\n" 328 " return;", 329 AllowsMergedIf); 330 331 AllowsMergedIf.ColumnLimit = 13; 332 verifyFormat("if (a)\n return;", AllowsMergedIf); 333 } 334 335 TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) { 336 FormatStyle AllowsMergedLoops = getLLVMStyle(); 337 AllowsMergedLoops.AllowShortLoopsOnASingleLine = true; 338 verifyFormat("while (true) continue;", AllowsMergedLoops); 339 verifyFormat("for (;;) continue;", AllowsMergedLoops); 340 verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops); 341 verifyFormat("while (true)\n" 342 " ;", 343 AllowsMergedLoops); 344 verifyFormat("for (;;)\n" 345 " ;", 346 AllowsMergedLoops); 347 verifyFormat("for (;;)\n" 348 " for (;;) continue;", 349 AllowsMergedLoops); 350 verifyFormat("for (;;) // Can't merge this\n" 351 " continue;", 352 AllowsMergedLoops); 353 verifyFormat("for (;;) /* still don't merge */\n" 354 " continue;", 355 AllowsMergedLoops); 356 } 357 358 TEST_F(FormatTest, FormatShortBracedStatements) { 359 FormatStyle AllowSimpleBracedStatements = getLLVMStyle(); 360 AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine = true; 361 362 AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = true; 363 AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true; 364 365 verifyFormat("if (true) {}", AllowSimpleBracedStatements); 366 verifyFormat("while (true) {}", AllowSimpleBracedStatements); 367 verifyFormat("for (;;) {}", AllowSimpleBracedStatements); 368 verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements); 369 verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements); 370 verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements); 371 verifyFormat("if (true) { //\n" 372 " f();\n" 373 "}", 374 AllowSimpleBracedStatements); 375 verifyFormat("if (true) {\n" 376 " f();\n" 377 " f();\n" 378 "}", 379 AllowSimpleBracedStatements); 380 381 verifyFormat("template <int> struct A2 {\n" 382 " struct B {};\n" 383 "};", 384 AllowSimpleBracedStatements); 385 386 AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = false; 387 verifyFormat("if (true) {\n" 388 " f();\n" 389 "}", 390 AllowSimpleBracedStatements); 391 392 AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false; 393 verifyFormat("while (true) {\n" 394 " f();\n" 395 "}", 396 AllowSimpleBracedStatements); 397 verifyFormat("for (;;) {\n" 398 " f();\n" 399 "}", 400 AllowSimpleBracedStatements); 401 } 402 403 TEST_F(FormatTest, ParseIfElse) { 404 verifyFormat("if (true)\n" 405 " if (true)\n" 406 " if (true)\n" 407 " f();\n" 408 " else\n" 409 " g();\n" 410 " else\n" 411 " h();\n" 412 "else\n" 413 " i();"); 414 verifyFormat("if (true)\n" 415 " if (true)\n" 416 " if (true) {\n" 417 " if (true)\n" 418 " f();\n" 419 " } else {\n" 420 " g();\n" 421 " }\n" 422 " else\n" 423 " h();\n" 424 "else {\n" 425 " i();\n" 426 "}"); 427 verifyFormat("void f() {\n" 428 " if (a) {\n" 429 " } else {\n" 430 " }\n" 431 "}"); 432 } 433 434 TEST_F(FormatTest, ElseIf) { 435 verifyFormat("if (a) {\n} else if (b) {\n}"); 436 verifyFormat("if (a)\n" 437 " f();\n" 438 "else if (b)\n" 439 " g();\n" 440 "else\n" 441 " h();"); 442 verifyFormat("if (a) {\n" 443 " f();\n" 444 "}\n" 445 "// or else ..\n" 446 "else {\n" 447 " g()\n" 448 "}"); 449 450 verifyFormat("if (a) {\n" 451 "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 452 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" 453 "}"); 454 } 455 456 TEST_F(FormatTest, FormatsForLoop) { 457 verifyFormat( 458 "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n" 459 " ++VeryVeryLongLoopVariable)\n" 460 " ;"); 461 verifyFormat("for (;;)\n" 462 " f();"); 463 verifyFormat("for (;;) {\n}"); 464 verifyFormat("for (;;) {\n" 465 " f();\n" 466 "}"); 467 verifyFormat("for (int i = 0; (i < 10); ++i) {\n}"); 468 469 verifyFormat( 470 "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n" 471 " E = UnwrappedLines.end();\n" 472 " I != E; ++I) {\n}"); 473 474 verifyFormat( 475 "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n" 476 " ++IIIII) {\n}"); 477 verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n" 478 " aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n" 479 " aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}"); 480 verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n" 481 " I = FD->getDeclsInPrototypeScope().begin(),\n" 482 " E = FD->getDeclsInPrototypeScope().end();\n" 483 " I != E; ++I) {\n}"); 484 485 // FIXME: Not sure whether we want extra identation in line 3 here: 486 verifyFormat( 487 "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" 488 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n" 489 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 490 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 491 " ++aaaaaaaaaaa) {\n}"); 492 verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n" 493 " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" 494 "}"); 495 verifyFormat("for (some_namespace::SomeIterator iter( // force break\n" 496 " aaaaaaaaaa);\n" 497 " iter; ++iter) {\n" 498 "}"); 499 500 FormatStyle NoBinPacking = getLLVMStyle(); 501 NoBinPacking.BinPackParameters = false; 502 verifyFormat("for (int aaaaaaaaaaa = 1;\n" 503 " aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n" 504 " aaaaaaaaaaaaaaaa,\n" 505 " aaaaaaaaaaaaaaaa,\n" 506 " aaaaaaaaaaaaaaaa);\n" 507 " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" 508 "}", 509 NoBinPacking); 510 verifyFormat( 511 "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n" 512 " E = UnwrappedLines.end();\n" 513 " I != E;\n" 514 " ++I) {\n}", 515 NoBinPacking); 516 } 517 518 TEST_F(FormatTest, RangeBasedForLoops) { 519 verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 520 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 521 verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n" 522 " aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}"); 523 verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n" 524 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 525 verifyFormat("for (aaaaaaaaa aaaaaaaaaaaaaaaaaaaaa :\n" 526 " aaaaaaaaaaaa.aaaaaaaaaaaa().aaaaaaaaa().a()) {\n}"); 527 } 528 529 TEST_F(FormatTest, ForEachLoops) { 530 verifyFormat("void f() {\n" 531 " foreach (Item *item, itemlist) {}\n" 532 " Q_FOREACH (Item *item, itemlist) {}\n" 533 " BOOST_FOREACH (Item *item, itemlist) {}\n" 534 " UNKNOWN_FORACH(Item * item, itemlist) {}\n" 535 "}"); 536 } 537 538 TEST_F(FormatTest, FormatsWhileLoop) { 539 verifyFormat("while (true) {\n}"); 540 verifyFormat("while (true)\n" 541 " f();"); 542 verifyFormat("while () {\n}"); 543 verifyFormat("while () {\n" 544 " f();\n" 545 "}"); 546 } 547 548 TEST_F(FormatTest, FormatsDoWhile) { 549 verifyFormat("do {\n" 550 " do_something();\n" 551 "} while (something());"); 552 verifyFormat("do\n" 553 " do_something();\n" 554 "while (something());"); 555 } 556 557 TEST_F(FormatTest, FormatsSwitchStatement) { 558 verifyFormat("switch (x) {\n" 559 "case 1:\n" 560 " f();\n" 561 " break;\n" 562 "case kFoo:\n" 563 "case ns::kBar:\n" 564 "case kBaz:\n" 565 " break;\n" 566 "default:\n" 567 " g();\n" 568 " break;\n" 569 "}"); 570 verifyFormat("switch (x) {\n" 571 "case 1: {\n" 572 " f();\n" 573 " break;\n" 574 "}\n" 575 "case 2: {\n" 576 " break;\n" 577 "}\n" 578 "}"); 579 verifyFormat("switch (x) {\n" 580 "case 1: {\n" 581 " f();\n" 582 " {\n" 583 " g();\n" 584 " h();\n" 585 " }\n" 586 " break;\n" 587 "}\n" 588 "}"); 589 verifyFormat("switch (x) {\n" 590 "case 1: {\n" 591 " f();\n" 592 " if (foo) {\n" 593 " g();\n" 594 " h();\n" 595 " }\n" 596 " break;\n" 597 "}\n" 598 "}"); 599 verifyFormat("switch (x) {\n" 600 "case 1: {\n" 601 " f();\n" 602 " g();\n" 603 "} break;\n" 604 "}"); 605 verifyFormat("switch (test)\n" 606 " ;"); 607 verifyFormat("switch (x) {\n" 608 "default: {\n" 609 " // Do nothing.\n" 610 "}\n" 611 "}"); 612 verifyFormat("switch (x) {\n" 613 "// comment\n" 614 "// if 1, do f()\n" 615 "case 1:\n" 616 " f();\n" 617 "}"); 618 verifyFormat("switch (x) {\n" 619 "case 1:\n" 620 " // Do amazing stuff\n" 621 " {\n" 622 " f();\n" 623 " g();\n" 624 " }\n" 625 " break;\n" 626 "}"); 627 verifyFormat("#define A \\\n" 628 " switch (x) { \\\n" 629 " case a: \\\n" 630 " foo = b; \\\n" 631 " }", getLLVMStyleWithColumns(20)); 632 verifyFormat("#define OPERATION_CASE(name) \\\n" 633 " case OP_name: \\\n" 634 " return operations::Operation##name\n", 635 getLLVMStyleWithColumns(40)); 636 637 verifyGoogleFormat("switch (x) {\n" 638 " case 1:\n" 639 " f();\n" 640 " break;\n" 641 " case kFoo:\n" 642 " case ns::kBar:\n" 643 " case kBaz:\n" 644 " break;\n" 645 " default:\n" 646 " g();\n" 647 " break;\n" 648 "}"); 649 verifyGoogleFormat("switch (x) {\n" 650 " case 1: {\n" 651 " f();\n" 652 " break;\n" 653 " }\n" 654 "}"); 655 verifyGoogleFormat("switch (test)\n" 656 " ;"); 657 658 verifyGoogleFormat("#define OPERATION_CASE(name) \\\n" 659 " case OP_name: \\\n" 660 " return operations::Operation##name\n"); 661 verifyGoogleFormat("Operation codeToOperation(OperationCode OpCode) {\n" 662 " // Get the correction operation class.\n" 663 " switch (OpCode) {\n" 664 " CASE(Add);\n" 665 " CASE(Subtract);\n" 666 " default:\n" 667 " return operations::Unknown;\n" 668 " }\n" 669 "#undef OPERATION_CASE\n" 670 "}"); 671 verifyFormat("DEBUG({\n" 672 " switch (x) {\n" 673 " case A:\n" 674 " f();\n" 675 " break;\n" 676 " // On B:\n" 677 " case B:\n" 678 " g();\n" 679 " break;\n" 680 " }\n" 681 "});"); 682 verifyFormat("switch (a) {\n" 683 "case (b):\n" 684 " return;\n" 685 "}"); 686 687 verifyFormat("switch (a) {\n" 688 "case some_namespace::\n" 689 " some_constant:\n" 690 " return;\n" 691 "}", 692 getLLVMStyleWithColumns(34)); 693 } 694 695 TEST_F(FormatTest, CaseRanges) { 696 verifyFormat("switch (x) {\n" 697 "case 'A' ... 'Z':\n" 698 "case 1 ... 5:\n" 699 " break;\n" 700 "}"); 701 } 702 703 TEST_F(FormatTest, ShortCaseLabels) { 704 FormatStyle Style = getLLVMStyle(); 705 Style.AllowShortCaseLabelsOnASingleLine = true; 706 verifyFormat("switch (a) {\n" 707 "case 1: x = 1; break;\n" 708 "case 2: return;\n" 709 "case 3:\n" 710 "case 4:\n" 711 "case 5: return;\n" 712 "default: y = 1; break;\n" 713 "}", 714 Style); 715 verifyFormat("switch (a) {\n" 716 "case 1: {\n" 717 "}\n" 718 "case 2: {\n" 719 " return;\n" 720 "}\n" 721 "case 3: {\n" 722 " x = 1;\n" 723 " return;\n" 724 "}\n" 725 "case 4:\n" 726 " if (x)\n" 727 " return;\n" 728 "}", 729 Style); 730 Style.ColumnLimit = 21; 731 verifyFormat("switch (a) {\n" 732 "case 1: x = 1; break;\n" 733 "case 2: return;\n" 734 "case 3:\n" 735 "case 4:\n" 736 "case 5: return;\n" 737 "default:\n" 738 " y = 1;\n" 739 " break;\n" 740 "}", 741 Style); 742 } 743 744 TEST_F(FormatTest, FormatsLabels) { 745 verifyFormat("void f() {\n" 746 " some_code();\n" 747 "test_label:\n" 748 " some_other_code();\n" 749 " {\n" 750 " some_more_code();\n" 751 " another_label:\n" 752 " some_more_code();\n" 753 " }\n" 754 "}"); 755 verifyFormat("some_code();\n" 756 "test_label:\n" 757 "some_other_code();"); 758 } 759 760 //===----------------------------------------------------------------------===// 761 // Tests for comments. 762 //===----------------------------------------------------------------------===// 763 764 TEST_F(FormatTest, UnderstandsSingleLineComments) { 765 verifyFormat("//* */"); 766 verifyFormat("// line 1\n" 767 "// line 2\n" 768 "void f() {}\n"); 769 770 verifyFormat("void f() {\n" 771 " // Doesn't do anything\n" 772 "}"); 773 verifyFormat("SomeObject\n" 774 " // Calling someFunction on SomeObject\n" 775 " .someFunction();"); 776 verifyFormat("auto result = SomeObject\n" 777 " // Calling someFunction on SomeObject\n" 778 " .someFunction();"); 779 verifyFormat("void f(int i, // some comment (probably for i)\n" 780 " int j, // some comment (probably for j)\n" 781 " int k); // some comment (probably for k)"); 782 verifyFormat("void f(int i,\n" 783 " // some comment (probably for j)\n" 784 " int j,\n" 785 " // some comment (probably for k)\n" 786 " int k);"); 787 788 verifyFormat("int i // This is a fancy variable\n" 789 " = 5; // with nicely aligned comment."); 790 791 verifyFormat("// Leading comment.\n" 792 "int a; // Trailing comment."); 793 verifyFormat("int a; // Trailing comment\n" 794 " // on 2\n" 795 " // or 3 lines.\n" 796 "int b;"); 797 verifyFormat("int a; // Trailing comment\n" 798 "\n" 799 "// Leading comment.\n" 800 "int b;"); 801 verifyFormat("int a; // Comment.\n" 802 " // More details.\n" 803 "int bbbb; // Another comment."); 804 verifyFormat( 805 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 806 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // comment\n" 807 "int cccccccccccccccccccccccccccccc; // comment\n" 808 "int ddd; // looooooooooooooooooooooooong comment\n" 809 "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 810 "int bbbbbbbbbbbbbbbbbbbbb; // comment\n" 811 "int ccccccccccccccccccc; // comment"); 812 813 verifyFormat("#include \"a\" // comment\n" 814 "#include \"a/b/c\" // comment"); 815 verifyFormat("#include <a> // comment\n" 816 "#include <a/b/c> // comment"); 817 EXPECT_EQ("#include \"a\" // comment\n" 818 "#include \"a/b/c\" // comment", 819 format("#include \\\n" 820 " \"a\" // comment\n" 821 "#include \"a/b/c\" // comment")); 822 823 verifyFormat("enum E {\n" 824 " // comment\n" 825 " VAL_A, // comment\n" 826 " VAL_B\n" 827 "};"); 828 829 verifyFormat( 830 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 831 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment"); 832 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 833 " // Comment inside a statement.\n" 834 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 835 verifyFormat("SomeFunction(a,\n" 836 " // comment\n" 837 " b + x);"); 838 verifyFormat("SomeFunction(a, a,\n" 839 " // comment\n" 840 " b + x);"); 841 verifyFormat( 842 "bool aaaaaaaaaaaaa = // comment\n" 843 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 844 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 845 846 verifyFormat("int aaaa; // aaaaa\n" 847 "int aa; // aaaaaaa", 848 getLLVMStyleWithColumns(20)); 849 850 EXPECT_EQ("void f() { // This does something ..\n" 851 "}\n" 852 "int a; // This is unrelated", 853 format("void f() { // This does something ..\n" 854 " }\n" 855 "int a; // This is unrelated")); 856 EXPECT_EQ("class C {\n" 857 " void f() { // This does something ..\n" 858 " } // awesome..\n" 859 "\n" 860 " int a; // This is unrelated\n" 861 "};", 862 format("class C{void f() { // This does something ..\n" 863 " } // awesome..\n" 864 " \n" 865 "int a; // This is unrelated\n" 866 "};")); 867 868 EXPECT_EQ("int i; // single line trailing comment", 869 format("int i;\\\n// single line trailing comment")); 870 871 verifyGoogleFormat("int a; // Trailing comment."); 872 873 verifyFormat("someFunction(anotherFunction( // Force break.\n" 874 " parameter));"); 875 876 verifyGoogleFormat("#endif // HEADER_GUARD"); 877 878 verifyFormat("const char *test[] = {\n" 879 " // A\n" 880 " \"aaaa\",\n" 881 " // B\n" 882 " \"aaaaa\"};"); 883 verifyGoogleFormat( 884 "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 885 " aaaaaaaaaaaaaaaaaaaaaa); // 81_cols_with_this_comment"); 886 EXPECT_EQ("D(a, {\n" 887 " // test\n" 888 " int a;\n" 889 "});", 890 format("D(a, {\n" 891 "// test\n" 892 "int a;\n" 893 "});")); 894 895 EXPECT_EQ("lineWith(); // comment\n" 896 "// at start\n" 897 "otherLine();", 898 format("lineWith(); // comment\n" 899 "// at start\n" 900 "otherLine();")); 901 EXPECT_EQ("lineWith(); // comment\n" 902 " // at start\n" 903 "otherLine();", 904 format("lineWith(); // comment\n" 905 " // at start\n" 906 "otherLine();")); 907 908 EXPECT_EQ("lineWith(); // comment\n" 909 "// at start\n" 910 "otherLine(); // comment", 911 format("lineWith(); // comment\n" 912 "// at start\n" 913 "otherLine(); // comment")); 914 EXPECT_EQ("lineWith();\n" 915 "// at start\n" 916 "otherLine(); // comment", 917 format("lineWith();\n" 918 " // at start\n" 919 "otherLine(); // comment")); 920 EXPECT_EQ("// first\n" 921 "// at start\n" 922 "otherLine(); // comment", 923 format("// first\n" 924 " // at start\n" 925 "otherLine(); // comment")); 926 EXPECT_EQ("f();\n" 927 "// first\n" 928 "// at start\n" 929 "otherLine(); // comment", 930 format("f();\n" 931 "// first\n" 932 " // at start\n" 933 "otherLine(); // comment")); 934 verifyFormat("f(); // comment\n" 935 "// first\n" 936 "// at start\n" 937 "otherLine();"); 938 EXPECT_EQ("f(); // comment\n" 939 "// first\n" 940 "// at start\n" 941 "otherLine();", 942 format("f(); // comment\n" 943 "// first\n" 944 " // at start\n" 945 "otherLine();")); 946 EXPECT_EQ("f(); // comment\n" 947 " // first\n" 948 "// at start\n" 949 "otherLine();", 950 format("f(); // comment\n" 951 " // first\n" 952 "// at start\n" 953 "otherLine();")); 954 955 verifyFormat( 956 "#define A \\\n" 957 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 958 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 959 getLLVMStyleWithColumns(60)); 960 verifyFormat( 961 "#define A \\\n" 962 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 963 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 964 getLLVMStyleWithColumns(61)); 965 966 verifyFormat("if ( // This is some comment\n" 967 " x + 3) {\n" 968 "}"); 969 EXPECT_EQ("if ( // This is some comment\n" 970 " // spanning two lines\n" 971 " x + 3) {\n" 972 "}", 973 format("if( // This is some comment\n" 974 " // spanning two lines\n" 975 " x + 3) {\n" 976 "}")); 977 } 978 979 TEST_F(FormatTest, KeepsParameterWithTrailingCommentsOnTheirOwnLine) { 980 EXPECT_EQ("SomeFunction(a,\n" 981 " b, // comment\n" 982 " c);", 983 format("SomeFunction(a,\n" 984 " b, // comment\n" 985 " c);")); 986 EXPECT_EQ("SomeFunction(a, b,\n" 987 " // comment\n" 988 " c);", 989 format("SomeFunction(a,\n" 990 " b,\n" 991 " // comment\n" 992 " c);")); 993 EXPECT_EQ("SomeFunction(a, b, // comment (unclear relation)\n" 994 " c);", 995 format("SomeFunction(a, b, // comment (unclear relation)\n" 996 " c);")); 997 EXPECT_EQ("SomeFunction(a, // comment\n" 998 " b,\n" 999 " c); // comment", 1000 format("SomeFunction(a, // comment\n" 1001 " b,\n" 1002 " c); // comment")); 1003 } 1004 1005 TEST_F(FormatTest, CanFormatCommentsLocally) { 1006 EXPECT_EQ("int a; // comment\n" 1007 "int b; // comment", 1008 format("int a; // comment\n" 1009 "int b; // comment", 1010 0, 0, getLLVMStyle())); 1011 EXPECT_EQ("int a; // comment\n" 1012 " // line 2\n" 1013 "int b;", 1014 format("int a; // comment\n" 1015 " // line 2\n" 1016 "int b;", 1017 28, 0, getLLVMStyle())); 1018 EXPECT_EQ("int aaaaaa; // comment\n" 1019 "int b;\n" 1020 "int c; // unrelated comment", 1021 format("int aaaaaa; // comment\n" 1022 "int b;\n" 1023 "int c; // unrelated comment", 1024 31, 0, getLLVMStyle())); 1025 1026 EXPECT_EQ("int a; // This\n" 1027 " // is\n" 1028 " // a", 1029 format("int a; // This\n" 1030 " // is\n" 1031 " // a", 1032 0, 0, getLLVMStyle())); 1033 EXPECT_EQ("int a; // This\n" 1034 " // is\n" 1035 " // a\n" 1036 "// This is b\n" 1037 "int b;", 1038 format("int a; // This\n" 1039 " // is\n" 1040 " // a\n" 1041 "// This is b\n" 1042 "int b;", 1043 0, 0, getLLVMStyle())); 1044 EXPECT_EQ("int a; // This\n" 1045 " // is\n" 1046 " // a\n" 1047 "\n" 1048 " // This is unrelated", 1049 format("int a; // This\n" 1050 " // is\n" 1051 " // a\n" 1052 "\n" 1053 " // This is unrelated", 1054 0, 0, getLLVMStyle())); 1055 EXPECT_EQ("int a;\n" 1056 "// This is\n" 1057 "// not formatted. ", 1058 format("int a;\n" 1059 "// This is\n" 1060 "// not formatted. ", 1061 0, 0, getLLVMStyle())); 1062 } 1063 1064 TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) { 1065 EXPECT_EQ("// comment", format("// comment ")); 1066 EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment", 1067 format("int aaaaaaa, bbbbbbb; // comment ", 1068 getLLVMStyleWithColumns(33))); 1069 EXPECT_EQ("// comment\\\n", format("// comment\\\n \t \v \f ")); 1070 EXPECT_EQ("// comment \\\n", format("// comment \\\n \t \v \f ")); 1071 } 1072 1073 TEST_F(FormatTest, UnderstandsBlockComments) { 1074 verifyFormat("f(/*noSpaceAfterParameterNamingComment=*/true);"); 1075 verifyFormat("void f() { g(/*aaa=*/x, /*bbb=*/!y); }"); 1076 EXPECT_EQ("f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n" 1077 " bbbbbbbbbbbbbbbbbbbbbbbbb);", 1078 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \\\n" 1079 "/* Trailing comment for aa... */\n" 1080 " bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1081 EXPECT_EQ( 1082 "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1083 " /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);", 1084 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \n" 1085 "/* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1086 EXPECT_EQ( 1087 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1088 " aaaaaaaaaaaaaaaaaa,\n" 1089 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1090 "}", 1091 format("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1092 " aaaaaaaaaaaaaaaaaa ,\n" 1093 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1094 "}")); 1095 1096 FormatStyle NoBinPacking = getLLVMStyle(); 1097 NoBinPacking.BinPackParameters = false; 1098 verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n" 1099 " /* parameter 2 */ aaaaaa,\n" 1100 " /* parameter 3 */ aaaaaa,\n" 1101 " /* parameter 4 */ aaaaaa);", 1102 NoBinPacking); 1103 1104 // Aligning block comments in macros. 1105 verifyGoogleFormat("#define A \\\n" 1106 " int i; /*a*/ \\\n" 1107 " int jjj; /*b*/"); 1108 } 1109 1110 TEST_F(FormatTest, AlignsBlockComments) { 1111 EXPECT_EQ("/*\n" 1112 " * Really multi-line\n" 1113 " * comment.\n" 1114 " */\n" 1115 "void f() {}", 1116 format(" /*\n" 1117 " * Really multi-line\n" 1118 " * comment.\n" 1119 " */\n" 1120 " void f() {}")); 1121 EXPECT_EQ("class C {\n" 1122 " /*\n" 1123 " * Another multi-line\n" 1124 " * comment.\n" 1125 " */\n" 1126 " void f() {}\n" 1127 "};", 1128 format("class C {\n" 1129 "/*\n" 1130 " * Another multi-line\n" 1131 " * comment.\n" 1132 " */\n" 1133 "void f() {}\n" 1134 "};")); 1135 EXPECT_EQ("/*\n" 1136 " 1. This is a comment with non-trivial formatting.\n" 1137 " 1.1. We have to indent/outdent all lines equally\n" 1138 " 1.1.1. to keep the formatting.\n" 1139 " */", 1140 format(" /*\n" 1141 " 1. This is a comment with non-trivial formatting.\n" 1142 " 1.1. We have to indent/outdent all lines equally\n" 1143 " 1.1.1. to keep the formatting.\n" 1144 " */")); 1145 EXPECT_EQ("/*\n" 1146 "Don't try to outdent if there's not enough indentation.\n" 1147 "*/", 1148 format(" /*\n" 1149 " Don't try to outdent if there's not enough indentation.\n" 1150 " */")); 1151 1152 EXPECT_EQ("int i; /* Comment with empty...\n" 1153 " *\n" 1154 " * line. */", 1155 format("int i; /* Comment with empty...\n" 1156 " *\n" 1157 " * line. */")); 1158 EXPECT_EQ("int foobar = 0; /* comment */\n" 1159 "int bar = 0; /* multiline\n" 1160 " comment 1 */\n" 1161 "int baz = 0; /* multiline\n" 1162 " comment 2 */\n" 1163 "int bzz = 0; /* multiline\n" 1164 " comment 3 */", 1165 format("int foobar = 0; /* comment */\n" 1166 "int bar = 0; /* multiline\n" 1167 " comment 1 */\n" 1168 "int baz = 0; /* multiline\n" 1169 " comment 2 */\n" 1170 "int bzz = 0; /* multiline\n" 1171 " comment 3 */")); 1172 EXPECT_EQ("int foobar = 0; /* comment */\n" 1173 "int bar = 0; /* multiline\n" 1174 " comment */\n" 1175 "int baz = 0; /* multiline\n" 1176 "comment */", 1177 format("int foobar = 0; /* comment */\n" 1178 "int bar = 0; /* multiline\n" 1179 "comment */\n" 1180 "int baz = 0; /* multiline\n" 1181 "comment */")); 1182 } 1183 1184 TEST_F(FormatTest, CorrectlyHandlesLengthOfBlockComments) { 1185 EXPECT_EQ("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1186 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */", 1187 format("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1188 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */")); 1189 EXPECT_EQ( 1190 "void ffffffffffff(\n" 1191 " int aaaaaaaa, int bbbbbbbb,\n" 1192 " int cccccccccccc) { /*\n" 1193 " aaaaaaaaaa\n" 1194 " aaaaaaaaaaaaa\n" 1195 " bbbbbbbbbbbbbb\n" 1196 " bbbbbbbbbb\n" 1197 " */\n" 1198 "}", 1199 format("void ffffffffffff(int aaaaaaaa, int bbbbbbbb, int cccccccccccc)\n" 1200 "{ /*\n" 1201 " aaaaaaaaaa aaaaaaaaaaaaa\n" 1202 " bbbbbbbbbbbbbb bbbbbbbbbb\n" 1203 " */\n" 1204 "}", 1205 getLLVMStyleWithColumns(40))); 1206 } 1207 1208 TEST_F(FormatTest, DontBreakNonTrailingBlockComments) { 1209 EXPECT_EQ("void\n" 1210 "ffffffffff(int aaaaa /* test */);", 1211 format("void ffffffffff(int aaaaa /* test */);", 1212 getLLVMStyleWithColumns(35))); 1213 } 1214 1215 TEST_F(FormatTest, SplitsLongCxxComments) { 1216 EXPECT_EQ("// A comment that\n" 1217 "// doesn't fit on\n" 1218 "// one line", 1219 format("// A comment that doesn't fit on one line", 1220 getLLVMStyleWithColumns(20))); 1221 EXPECT_EQ("// a b c d\n" 1222 "// e f g\n" 1223 "// h i j k", 1224 format("// a b c d e f g h i j k", 1225 getLLVMStyleWithColumns(10))); 1226 EXPECT_EQ("// a b c d\n" 1227 "// e f g\n" 1228 "// h i j k", 1229 format("\\\n// a b c d e f g h i j k", 1230 getLLVMStyleWithColumns(10))); 1231 EXPECT_EQ("if (true) // A comment that\n" 1232 " // doesn't fit on\n" 1233 " // one line", 1234 format("if (true) // A comment that doesn't fit on one line ", 1235 getLLVMStyleWithColumns(30))); 1236 EXPECT_EQ("// Don't_touch_leading_whitespace", 1237 format("// Don't_touch_leading_whitespace", 1238 getLLVMStyleWithColumns(20))); 1239 EXPECT_EQ("// Add leading\n" 1240 "// whitespace", 1241 format("//Add leading whitespace", getLLVMStyleWithColumns(20))); 1242 EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle())); 1243 EXPECT_EQ("// Even if it makes the line exceed the column\n" 1244 "// limit", 1245 format("//Even if it makes the line exceed the column limit", 1246 getLLVMStyleWithColumns(51))); 1247 EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle())); 1248 1249 EXPECT_EQ("// aa bb cc dd", 1250 format("// aa bb cc dd ", 1251 getLLVMStyleWithColumns(15))); 1252 1253 EXPECT_EQ("// A comment before\n" 1254 "// a macro\n" 1255 "// definition\n" 1256 "#define a b", 1257 format("// A comment before a macro definition\n" 1258 "#define a b", 1259 getLLVMStyleWithColumns(20))); 1260 EXPECT_EQ("void\n" 1261 "ffffff(int aaaaaaaaa, // wwww\n" 1262 " int bbbbbbbbbb, // xxxxxxx\n" 1263 " // yyyyyyyyyy\n" 1264 " int c, int d, int e) {}", 1265 format("void ffffff(\n" 1266 " int aaaaaaaaa, // wwww\n" 1267 " int bbbbbbbbbb, // xxxxxxx yyyyyyyyyy\n" 1268 " int c, int d, int e) {}", 1269 getLLVMStyleWithColumns(40))); 1270 EXPECT_EQ("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1271 format("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1272 getLLVMStyleWithColumns(20))); 1273 EXPECT_EQ( 1274 "#define XXX // a b c d\n" 1275 " // e f g h", 1276 format("#define XXX // a b c d e f g h", getLLVMStyleWithColumns(22))); 1277 EXPECT_EQ( 1278 "#define XXX // q w e r\n" 1279 " // t y u i", 1280 format("#define XXX //q w e r t y u i", getLLVMStyleWithColumns(22))); 1281 } 1282 1283 TEST_F(FormatTest, PreservesHangingIndentInCxxComments) { 1284 EXPECT_EQ("// A comment\n" 1285 "// that doesn't\n" 1286 "// fit on one\n" 1287 "// line", 1288 format("// A comment that doesn't fit on one line", 1289 getLLVMStyleWithColumns(20))); 1290 EXPECT_EQ("/// A comment\n" 1291 "/// that doesn't\n" 1292 "/// fit on one\n" 1293 "/// line", 1294 format("/// A comment that doesn't fit on one line", 1295 getLLVMStyleWithColumns(20))); 1296 } 1297 1298 TEST_F(FormatTest, DontSplitLineCommentsWithEscapedNewlines) { 1299 EXPECT_EQ("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1300 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1301 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1302 format("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1303 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1304 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")); 1305 EXPECT_EQ("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1306 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1307 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1308 format("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1309 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1310 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1311 getLLVMStyleWithColumns(50))); 1312 // FIXME: One day we might want to implement adjustment of leading whitespace 1313 // of the consecutive lines in this kind of comment: 1314 EXPECT_EQ("double\n" 1315 " a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1316 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1317 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1318 format("double a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1319 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1320 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1321 getLLVMStyleWithColumns(49))); 1322 } 1323 1324 TEST_F(FormatTest, DontSplitLineCommentsWithPragmas) { 1325 FormatStyle Pragmas = getLLVMStyleWithColumns(30); 1326 Pragmas.CommentPragmas = "^ IWYU pragma:"; 1327 EXPECT_EQ( 1328 "// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", 1329 format("// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", Pragmas)); 1330 EXPECT_EQ( 1331 "/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", 1332 format("/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", Pragmas)); 1333 } 1334 1335 TEST_F(FormatTest, PriorityOfCommentBreaking) { 1336 EXPECT_EQ("if (xxx ==\n" 1337 " yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1338 " zzz)\n" 1339 " q();", 1340 format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1341 " zzz) q();", 1342 getLLVMStyleWithColumns(40))); 1343 EXPECT_EQ("if (xxxxxxxxxx ==\n" 1344 " yyy && // aaaaaa bbbbbbbb cccc\n" 1345 " zzz)\n" 1346 " q();", 1347 format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n" 1348 " zzz) q();", 1349 getLLVMStyleWithColumns(40))); 1350 EXPECT_EQ("if (xxxxxxxxxx &&\n" 1351 " yyy || // aaaaaa bbbbbbbb cccc\n" 1352 " zzz)\n" 1353 " q();", 1354 format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n" 1355 " zzz) q();", 1356 getLLVMStyleWithColumns(40))); 1357 EXPECT_EQ("fffffffff(\n" 1358 " &xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1359 " zzz);", 1360 format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1361 " zzz);", 1362 getLLVMStyleWithColumns(40))); 1363 } 1364 1365 TEST_F(FormatTest, MultiLineCommentsInDefines) { 1366 EXPECT_EQ("#define A(x) /* \\\n" 1367 " a comment \\\n" 1368 " inside */ \\\n" 1369 " f();", 1370 format("#define A(x) /* \\\n" 1371 " a comment \\\n" 1372 " inside */ \\\n" 1373 " f();", 1374 getLLVMStyleWithColumns(17))); 1375 EXPECT_EQ("#define A( \\\n" 1376 " x) /* \\\n" 1377 " a comment \\\n" 1378 " inside */ \\\n" 1379 " f();", 1380 format("#define A( \\\n" 1381 " x) /* \\\n" 1382 " a comment \\\n" 1383 " inside */ \\\n" 1384 " f();", 1385 getLLVMStyleWithColumns(17))); 1386 } 1387 1388 TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) { 1389 EXPECT_EQ("namespace {}\n// Test\n#define A", 1390 format("namespace {}\n // Test\n#define A")); 1391 EXPECT_EQ("namespace {}\n/* Test */\n#define A", 1392 format("namespace {}\n /* Test */\n#define A")); 1393 EXPECT_EQ("namespace {}\n/* Test */ #define A", 1394 format("namespace {}\n /* Test */ #define A")); 1395 } 1396 1397 TEST_F(FormatTest, SplitsLongLinesInComments) { 1398 EXPECT_EQ("/* This is a long\n" 1399 " * comment that\n" 1400 " * doesn't\n" 1401 " * fit on one line.\n" 1402 " */", 1403 format("/* " 1404 "This is a long " 1405 "comment that " 1406 "doesn't " 1407 "fit on one line. */", 1408 getLLVMStyleWithColumns(20))); 1409 EXPECT_EQ("/* a b c d\n" 1410 " * e f g\n" 1411 " * h i j k\n" 1412 " */", 1413 format("/* a b c d e f g h i j k */", 1414 getLLVMStyleWithColumns(10))); 1415 EXPECT_EQ("/* a b c d\n" 1416 " * e f g\n" 1417 " * h i j k\n" 1418 " */", 1419 format("\\\n/* a b c d e f g h i j k */", 1420 getLLVMStyleWithColumns(10))); 1421 EXPECT_EQ("/*\n" 1422 "This is a long\n" 1423 "comment that doesn't\n" 1424 "fit on one line.\n" 1425 "*/", 1426 format("/*\n" 1427 "This is a long " 1428 "comment that doesn't " 1429 "fit on one line. \n" 1430 "*/", getLLVMStyleWithColumns(20))); 1431 EXPECT_EQ("/*\n" 1432 " * This is a long\n" 1433 " * comment that\n" 1434 " * doesn't fit on\n" 1435 " * one line.\n" 1436 " */", 1437 format("/* \n" 1438 " * This is a long " 1439 " comment that " 1440 " doesn't fit on " 1441 " one line. \n" 1442 " */", getLLVMStyleWithColumns(20))); 1443 EXPECT_EQ("/*\n" 1444 " * This_is_a_comment_with_words_that_dont_fit_on_one_line\n" 1445 " * so_it_should_be_broken\n" 1446 " * wherever_a_space_occurs\n" 1447 " */", 1448 format("/*\n" 1449 " * This_is_a_comment_with_words_that_dont_fit_on_one_line " 1450 " so_it_should_be_broken " 1451 " wherever_a_space_occurs \n" 1452 " */", 1453 getLLVMStyleWithColumns(20))); 1454 EXPECT_EQ("/*\n" 1455 " * This_comment_can_not_be_broken_into_lines\n" 1456 " */", 1457 format("/*\n" 1458 " * This_comment_can_not_be_broken_into_lines\n" 1459 " */", 1460 getLLVMStyleWithColumns(20))); 1461 EXPECT_EQ("{\n" 1462 " /*\n" 1463 " This is another\n" 1464 " long comment that\n" 1465 " doesn't fit on one\n" 1466 " line 1234567890\n" 1467 " */\n" 1468 "}", 1469 format("{\n" 1470 "/*\n" 1471 "This is another " 1472 " long comment that " 1473 " doesn't fit on one" 1474 " line 1234567890\n" 1475 "*/\n" 1476 "}", getLLVMStyleWithColumns(20))); 1477 EXPECT_EQ("{\n" 1478 " /*\n" 1479 " * This i s\n" 1480 " * another comment\n" 1481 " * t hat doesn' t\n" 1482 " * fit on one l i\n" 1483 " * n e\n" 1484 " */\n" 1485 "}", 1486 format("{\n" 1487 "/*\n" 1488 " * This i s" 1489 " another comment" 1490 " t hat doesn' t" 1491 " fit on one l i" 1492 " n e\n" 1493 " */\n" 1494 "}", getLLVMStyleWithColumns(20))); 1495 EXPECT_EQ("/*\n" 1496 " * This is a long\n" 1497 " * comment that\n" 1498 " * doesn't fit on\n" 1499 " * one line\n" 1500 " */", 1501 format(" /*\n" 1502 " * This is a long comment that doesn't fit on one line\n" 1503 " */", getLLVMStyleWithColumns(20))); 1504 EXPECT_EQ("{\n" 1505 " if (something) /* This is a\n" 1506 " long\n" 1507 " comment */\n" 1508 " ;\n" 1509 "}", 1510 format("{\n" 1511 " if (something) /* This is a long comment */\n" 1512 " ;\n" 1513 "}", 1514 getLLVMStyleWithColumns(30))); 1515 1516 EXPECT_EQ("/* A comment before\n" 1517 " * a macro\n" 1518 " * definition */\n" 1519 "#define a b", 1520 format("/* A comment before a macro definition */\n" 1521 "#define a b", 1522 getLLVMStyleWithColumns(20))); 1523 1524 EXPECT_EQ("/* some comment\n" 1525 " * a comment\n" 1526 "* that we break\n" 1527 " * another comment\n" 1528 "* we have to break\n" 1529 "* a left comment\n" 1530 " */", 1531 format(" /* some comment\n" 1532 " * a comment that we break\n" 1533 " * another comment we have to break\n" 1534 "* a left comment\n" 1535 " */", 1536 getLLVMStyleWithColumns(20))); 1537 1538 EXPECT_EQ("/*\n" 1539 "\n" 1540 "\n" 1541 " */\n", 1542 format(" /* \n" 1543 " \n" 1544 " \n" 1545 " */\n")); 1546 1547 EXPECT_EQ("/* a a */", 1548 format("/* a a */", getLLVMStyleWithColumns(15))); 1549 EXPECT_EQ("/* a a bc */", 1550 format("/* a a bc */", getLLVMStyleWithColumns(15))); 1551 EXPECT_EQ("/* aaa aaa\n" 1552 " * aaaaa */", 1553 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1554 EXPECT_EQ("/* aaa aaa\n" 1555 " * aaaaa */", 1556 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1557 } 1558 1559 TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) { 1560 EXPECT_EQ("#define X \\\n" 1561 " /* \\\n" 1562 " Test \\\n" 1563 " Macro comment \\\n" 1564 " with a long \\\n" 1565 " line \\\n" 1566 " */ \\\n" 1567 " A + B", 1568 format("#define X \\\n" 1569 " /*\n" 1570 " Test\n" 1571 " Macro comment with a long line\n" 1572 " */ \\\n" 1573 " A + B", 1574 getLLVMStyleWithColumns(20))); 1575 EXPECT_EQ("#define X \\\n" 1576 " /* Macro comment \\\n" 1577 " with a long \\\n" 1578 " line */ \\\n" 1579 " A + B", 1580 format("#define X \\\n" 1581 " /* Macro comment with a long\n" 1582 " line */ \\\n" 1583 " A + B", 1584 getLLVMStyleWithColumns(20))); 1585 EXPECT_EQ("#define X \\\n" 1586 " /* Macro comment \\\n" 1587 " * with a long \\\n" 1588 " * line */ \\\n" 1589 " A + B", 1590 format("#define X \\\n" 1591 " /* Macro comment with a long line */ \\\n" 1592 " A + B", 1593 getLLVMStyleWithColumns(20))); 1594 } 1595 1596 TEST_F(FormatTest, CommentsInStaticInitializers) { 1597 EXPECT_EQ( 1598 "static SomeType type = {aaaaaaaaaaaaaaaaaaaa, /* comment */\n" 1599 " aaaaaaaaaaaaaaaaaaaa /* comment */,\n" 1600 " /* comment */ aaaaaaaaaaaaaaaaaaaa,\n" 1601 " aaaaaaaaaaaaaaaaaaaa, // comment\n" 1602 " aaaaaaaaaaaaaaaaaaaa};", 1603 format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa , /* comment */\n" 1604 " aaaaaaaaaaaaaaaaaaaa /* comment */ ,\n" 1605 " /* comment */ aaaaaaaaaaaaaaaaaaaa ,\n" 1606 " aaaaaaaaaaaaaaaaaaaa , // comment\n" 1607 " aaaaaaaaaaaaaaaaaaaa };")); 1608 verifyFormat("static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1609 " bbbbbbbbbbb, ccccccccccc};"); 1610 verifyFormat("static SomeType type = {aaaaaaaaaaa,\n" 1611 " // comment for bb....\n" 1612 " bbbbbbbbbbb, ccccccccccc};"); 1613 verifyGoogleFormat( 1614 "static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1615 " bbbbbbbbbbb, ccccccccccc};"); 1616 verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n" 1617 " // comment for bb....\n" 1618 " bbbbbbbbbbb, ccccccccccc};"); 1619 1620 verifyFormat("S s = {{a, b, c}, // Group #1\n" 1621 " {d, e, f}, // Group #2\n" 1622 " {g, h, i}}; // Group #3"); 1623 verifyFormat("S s = {{// Group #1\n" 1624 " a, b, c},\n" 1625 " {// Group #2\n" 1626 " d, e, f},\n" 1627 " {// Group #3\n" 1628 " g, h, i}};"); 1629 1630 EXPECT_EQ("S s = {\n" 1631 " // Some comment\n" 1632 " a,\n" 1633 "\n" 1634 " // Comment after empty line\n" 1635 " b}", 1636 format("S s = {\n" 1637 " // Some comment\n" 1638 " a,\n" 1639 " \n" 1640 " // Comment after empty line\n" 1641 " b\n" 1642 "}")); 1643 EXPECT_EQ("S s = {\n" 1644 " /* Some comment */\n" 1645 " a,\n" 1646 "\n" 1647 " /* Comment after empty line */\n" 1648 " b}", 1649 format("S s = {\n" 1650 " /* Some comment */\n" 1651 " a,\n" 1652 " \n" 1653 " /* Comment after empty line */\n" 1654 " b\n" 1655 "}")); 1656 verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n" 1657 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1658 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1659 " 0x00, 0x00, 0x00, 0x00}; // comment\n"); 1660 } 1661 1662 TEST_F(FormatTest, IgnoresIf0Contents) { 1663 EXPECT_EQ("#if 0\n" 1664 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1665 "#endif\n" 1666 "void f() {}", 1667 format("#if 0\n" 1668 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1669 "#endif\n" 1670 "void f( ) { }")); 1671 EXPECT_EQ("#if false\n" 1672 "void f( ) { }\n" 1673 "#endif\n" 1674 "void g() {}\n", 1675 format("#if false\n" 1676 "void f( ) { }\n" 1677 "#endif\n" 1678 "void g( ) { }\n")); 1679 EXPECT_EQ("enum E {\n" 1680 " One,\n" 1681 " Two,\n" 1682 "#if 0\n" 1683 "Three,\n" 1684 " Four,\n" 1685 "#endif\n" 1686 " Five\n" 1687 "};", 1688 format("enum E {\n" 1689 " One,Two,\n" 1690 "#if 0\n" 1691 "Three,\n" 1692 " Four,\n" 1693 "#endif\n" 1694 " Five};")); 1695 EXPECT_EQ("enum F {\n" 1696 " One,\n" 1697 "#if 1\n" 1698 " Two,\n" 1699 "#if 0\n" 1700 "Three,\n" 1701 " Four,\n" 1702 "#endif\n" 1703 " Five\n" 1704 "#endif\n" 1705 "};", 1706 format("enum F {\n" 1707 "One,\n" 1708 "#if 1\n" 1709 "Two,\n" 1710 "#if 0\n" 1711 "Three,\n" 1712 " Four,\n" 1713 "#endif\n" 1714 "Five\n" 1715 "#endif\n" 1716 "};")); 1717 EXPECT_EQ("enum G {\n" 1718 " One,\n" 1719 "#if 0\n" 1720 "Two,\n" 1721 "#else\n" 1722 " Three,\n" 1723 "#endif\n" 1724 " Four\n" 1725 "};", 1726 format("enum G {\n" 1727 "One,\n" 1728 "#if 0\n" 1729 "Two,\n" 1730 "#else\n" 1731 "Three,\n" 1732 "#endif\n" 1733 "Four\n" 1734 "};")); 1735 EXPECT_EQ("enum H {\n" 1736 " One,\n" 1737 "#if 0\n" 1738 "#ifdef Q\n" 1739 "Two,\n" 1740 "#else\n" 1741 "Three,\n" 1742 "#endif\n" 1743 "#endif\n" 1744 " Four\n" 1745 "};", 1746 format("enum H {\n" 1747 "One,\n" 1748 "#if 0\n" 1749 "#ifdef Q\n" 1750 "Two,\n" 1751 "#else\n" 1752 "Three,\n" 1753 "#endif\n" 1754 "#endif\n" 1755 "Four\n" 1756 "};")); 1757 EXPECT_EQ("enum I {\n" 1758 " One,\n" 1759 "#if /* test */ 0 || 1\n" 1760 "Two,\n" 1761 "Three,\n" 1762 "#endif\n" 1763 " Four\n" 1764 "};", 1765 format("enum I {\n" 1766 "One,\n" 1767 "#if /* test */ 0 || 1\n" 1768 "Two,\n" 1769 "Three,\n" 1770 "#endif\n" 1771 "Four\n" 1772 "};")); 1773 EXPECT_EQ("enum J {\n" 1774 " One,\n" 1775 "#if 0\n" 1776 "#if 0\n" 1777 "Two,\n" 1778 "#else\n" 1779 "Three,\n" 1780 "#endif\n" 1781 "Four,\n" 1782 "#endif\n" 1783 " Five\n" 1784 "};", 1785 format("enum J {\n" 1786 "One,\n" 1787 "#if 0\n" 1788 "#if 0\n" 1789 "Two,\n" 1790 "#else\n" 1791 "Three,\n" 1792 "#endif\n" 1793 "Four,\n" 1794 "#endif\n" 1795 "Five\n" 1796 "};")); 1797 1798 } 1799 1800 //===----------------------------------------------------------------------===// 1801 // Tests for classes, namespaces, etc. 1802 //===----------------------------------------------------------------------===// 1803 1804 TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) { 1805 verifyFormat("class A {};"); 1806 } 1807 1808 TEST_F(FormatTest, UnderstandsAccessSpecifiers) { 1809 verifyFormat("class A {\n" 1810 "public:\n" 1811 "public: // comment\n" 1812 "protected:\n" 1813 "private:\n" 1814 " void f() {}\n" 1815 "};"); 1816 verifyGoogleFormat("class A {\n" 1817 " public:\n" 1818 " protected:\n" 1819 " private:\n" 1820 " void f() {}\n" 1821 "};"); 1822 verifyFormat("class A {\n" 1823 "public slots:\n" 1824 " void f() {}\n" 1825 "public Q_SLOTS:\n" 1826 " void f() {}\n" 1827 "};"); 1828 } 1829 1830 TEST_F(FormatTest, SeparatesLogicalBlocks) { 1831 EXPECT_EQ("class A {\n" 1832 "public:\n" 1833 " void f();\n" 1834 "\n" 1835 "private:\n" 1836 " void g() {}\n" 1837 " // test\n" 1838 "protected:\n" 1839 " int h;\n" 1840 "};", 1841 format("class A {\n" 1842 "public:\n" 1843 "void f();\n" 1844 "private:\n" 1845 "void g() {}\n" 1846 "// test\n" 1847 "protected:\n" 1848 "int h;\n" 1849 "};")); 1850 EXPECT_EQ("class A {\n" 1851 "protected:\n" 1852 "public:\n" 1853 " void f();\n" 1854 "};", 1855 format("class A {\n" 1856 "protected:\n" 1857 "\n" 1858 "public:\n" 1859 "\n" 1860 " void f();\n" 1861 "};")); 1862 } 1863 1864 TEST_F(FormatTest, FormatsClasses) { 1865 verifyFormat("class A : public B {};"); 1866 verifyFormat("class A : public ::B {};"); 1867 1868 verifyFormat( 1869 "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 1870 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 1871 verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n" 1872 " : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 1873 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 1874 verifyFormat( 1875 "class A : public B, public C, public D, public E, public F {};"); 1876 verifyFormat("class AAAAAAAAAAAA : public B,\n" 1877 " public C,\n" 1878 " public D,\n" 1879 " public E,\n" 1880 " public F,\n" 1881 " public G {};"); 1882 1883 verifyFormat("class\n" 1884 " ReallyReallyLongClassName {\n" 1885 " int i;\n" 1886 "};", 1887 getLLVMStyleWithColumns(32)); 1888 verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n" 1889 " aaaaaaaaaaaaaaaa> {};"); 1890 verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n" 1891 " : public aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaa,\n" 1892 " aaaaaaaaaaaaaaaaaaaaaa> {};"); 1893 verifyFormat("template <class R, class C>\n" 1894 "struct Aaaaaaaaaaaaaaaaa<R (C::*)(int) const>\n" 1895 " : Aaaaaaaaaaaaaaaaa<R (C::*)(int)> {};"); 1896 verifyFormat("class ::A::B {};"); 1897 } 1898 1899 TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) { 1900 verifyFormat("class A {\n} a, b;"); 1901 verifyFormat("struct A {\n} a, b;"); 1902 verifyFormat("union A {\n} a;"); 1903 } 1904 1905 TEST_F(FormatTest, FormatsEnum) { 1906 verifyFormat("enum {\n" 1907 " Zero,\n" 1908 " One = 1,\n" 1909 " Two = One + 1,\n" 1910 " Three = (One + Two),\n" 1911 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 1912 " Five = (One, Two, Three, Four, 5)\n" 1913 "};"); 1914 verifyGoogleFormat("enum {\n" 1915 " Zero,\n" 1916 " One = 1,\n" 1917 " Two = One + 1,\n" 1918 " Three = (One + Two),\n" 1919 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 1920 " Five = (One, Two, Three, Four, 5)\n" 1921 "};"); 1922 verifyFormat("enum Enum {};"); 1923 verifyFormat("enum {};"); 1924 verifyFormat("enum X E {} d;"); 1925 verifyFormat("enum __attribute__((...)) E {} d;"); 1926 verifyFormat("enum __declspec__((...)) E {} d;"); 1927 verifyFormat("enum X f() {\n a();\n return 42;\n}"); 1928 verifyFormat("enum {\n" 1929 " Bar = Foo<int, int>::value\n" 1930 "};", 1931 getLLVMStyleWithColumns(30)); 1932 1933 verifyFormat("enum ShortEnum { A, B, C };"); 1934 verifyGoogleFormat("enum ShortEnum { A, B, C };"); 1935 1936 EXPECT_EQ("enum KeepEmptyLines {\n" 1937 " ONE,\n" 1938 "\n" 1939 " TWO,\n" 1940 "\n" 1941 " THREE\n" 1942 "}", 1943 format("enum KeepEmptyLines {\n" 1944 " ONE,\n" 1945 "\n" 1946 " TWO,\n" 1947 "\n" 1948 "\n" 1949 " THREE\n" 1950 "}")); 1951 verifyFormat("enum E { // comment\n" 1952 " ONE,\n" 1953 " TWO\n" 1954 "};"); 1955 } 1956 1957 TEST_F(FormatTest, FormatsEnumsWithErrors) { 1958 verifyFormat("enum Type {\n" 1959 " One = 0; // These semicolons should be commas.\n" 1960 " Two = 1;\n" 1961 "};"); 1962 verifyFormat("namespace n {\n" 1963 "enum Type {\n" 1964 " One,\n" 1965 " Two, // missing };\n" 1966 " int i;\n" 1967 "}\n" 1968 "void g() {}"); 1969 } 1970 1971 TEST_F(FormatTest, FormatsEnumStruct) { 1972 verifyFormat("enum struct {\n" 1973 " Zero,\n" 1974 " One = 1,\n" 1975 " Two = One + 1,\n" 1976 " Three = (One + Two),\n" 1977 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 1978 " Five = (One, Two, Three, Four, 5)\n" 1979 "};"); 1980 verifyFormat("enum struct Enum {};"); 1981 verifyFormat("enum struct {};"); 1982 verifyFormat("enum struct X E {} d;"); 1983 verifyFormat("enum struct __attribute__((...)) E {} d;"); 1984 verifyFormat("enum struct __declspec__((...)) E {} d;"); 1985 verifyFormat("enum struct X f() {\n a();\n return 42;\n}"); 1986 } 1987 1988 TEST_F(FormatTest, FormatsEnumClass) { 1989 verifyFormat("enum class {\n" 1990 " Zero,\n" 1991 " One = 1,\n" 1992 " Two = One + 1,\n" 1993 " Three = (One + Two),\n" 1994 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 1995 " Five = (One, Two, Three, Four, 5)\n" 1996 "};"); 1997 verifyFormat("enum class Enum {};"); 1998 verifyFormat("enum class {};"); 1999 verifyFormat("enum class X E {} d;"); 2000 verifyFormat("enum class __attribute__((...)) E {} d;"); 2001 verifyFormat("enum class __declspec__((...)) E {} d;"); 2002 verifyFormat("enum class X f() {\n a();\n return 42;\n}"); 2003 } 2004 2005 TEST_F(FormatTest, FormatsEnumTypes) { 2006 verifyFormat("enum X : int {\n" 2007 " A, // Force multiple lines.\n" 2008 " B\n" 2009 "};"); 2010 verifyFormat("enum X : int { A, B };"); 2011 verifyFormat("enum X : std::uint32_t { A, B };"); 2012 } 2013 2014 TEST_F(FormatTest, FormatsNSEnums) { 2015 verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }"); 2016 verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n" 2017 " // Information about someDecentlyLongValue.\n" 2018 " someDecentlyLongValue,\n" 2019 " // Information about anotherDecentlyLongValue.\n" 2020 " anotherDecentlyLongValue,\n" 2021 " // Information about aThirdDecentlyLongValue.\n" 2022 " aThirdDecentlyLongValue\n" 2023 "};"); 2024 } 2025 2026 TEST_F(FormatTest, FormatsBitfields) { 2027 verifyFormat("struct Bitfields {\n" 2028 " unsigned sClass : 8;\n" 2029 " unsigned ValueKind : 2;\n" 2030 "};"); 2031 verifyFormat("struct A {\n" 2032 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n" 2033 " bbbbbbbbbbbbbbbbbbbbbbbbb;\n" 2034 "};"); 2035 } 2036 2037 TEST_F(FormatTest, FormatsNamespaces) { 2038 verifyFormat("namespace some_namespace {\n" 2039 "class A {};\n" 2040 "void f() { f(); }\n" 2041 "}"); 2042 verifyFormat("namespace {\n" 2043 "class A {};\n" 2044 "void f() { f(); }\n" 2045 "}"); 2046 verifyFormat("inline namespace X {\n" 2047 "class A {};\n" 2048 "void f() { f(); }\n" 2049 "}"); 2050 verifyFormat("using namespace some_namespace;\n" 2051 "class A {};\n" 2052 "void f() { f(); }"); 2053 2054 // This code is more common than we thought; if we 2055 // layout this correctly the semicolon will go into 2056 // its own line, which is undesirable. 2057 verifyFormat("namespace {};"); 2058 verifyFormat("namespace {\n" 2059 "class A {};\n" 2060 "};"); 2061 2062 verifyFormat("namespace {\n" 2063 "int SomeVariable = 0; // comment\n" 2064 "} // namespace"); 2065 EXPECT_EQ("#ifndef HEADER_GUARD\n" 2066 "#define HEADER_GUARD\n" 2067 "namespace my_namespace {\n" 2068 "int i;\n" 2069 "} // my_namespace\n" 2070 "#endif // HEADER_GUARD", 2071 format("#ifndef HEADER_GUARD\n" 2072 " #define HEADER_GUARD\n" 2073 " namespace my_namespace {\n" 2074 "int i;\n" 2075 "} // my_namespace\n" 2076 "#endif // HEADER_GUARD")); 2077 2078 FormatStyle Style = getLLVMStyle(); 2079 Style.NamespaceIndentation = FormatStyle::NI_All; 2080 EXPECT_EQ("namespace out {\n" 2081 " int i;\n" 2082 " namespace in {\n" 2083 " int i;\n" 2084 " } // namespace\n" 2085 "} // namespace", 2086 format("namespace out {\n" 2087 "int i;\n" 2088 "namespace in {\n" 2089 "int i;\n" 2090 "} // namespace\n" 2091 "} // namespace", 2092 Style)); 2093 2094 Style.NamespaceIndentation = FormatStyle::NI_Inner; 2095 EXPECT_EQ("namespace out {\n" 2096 "int i;\n" 2097 "namespace in {\n" 2098 " int i;\n" 2099 "} // namespace\n" 2100 "} // namespace", 2101 format("namespace out {\n" 2102 "int i;\n" 2103 "namespace in {\n" 2104 "int i;\n" 2105 "} // namespace\n" 2106 "} // namespace", 2107 Style)); 2108 } 2109 2110 TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); } 2111 2112 TEST_F(FormatTest, FormatsInlineASM) { 2113 verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));"); 2114 verifyFormat("asm(\"nop\" ::: \"memory\");"); 2115 verifyFormat( 2116 "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n" 2117 " \"cpuid\\n\\t\"\n" 2118 " \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n" 2119 " : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n" 2120 " : \"a\"(value));"); 2121 EXPECT_EQ( 2122 "void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2123 " __asm {\n" 2124 " mov edx,[that] // vtable in edx\n" 2125 " mov eax,methodIndex\n" 2126 " call [edx][eax*4] // stdcall\n" 2127 " }\n" 2128 "}", 2129 format("void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2130 " __asm {\n" 2131 " mov edx,[that] // vtable in edx\n" 2132 " mov eax,methodIndex\n" 2133 " call [edx][eax*4] // stdcall\n" 2134 " }\n" 2135 "}")); 2136 } 2137 2138 TEST_F(FormatTest, FormatTryCatch) { 2139 verifyFormat("try {\n" 2140 " throw a * b;\n" 2141 "} catch (int a) {\n" 2142 " // Do nothing.\n" 2143 "} catch (...) {\n" 2144 " exit(42);\n" 2145 "}"); 2146 2147 // Function-level try statements. 2148 verifyFormat("int f() try { return 4; } catch (...) {\n" 2149 " return 5;\n" 2150 "}"); 2151 verifyFormat("class A {\n" 2152 " int a;\n" 2153 " A() try : a(0) {\n" 2154 " } catch (...) {\n" 2155 " throw;\n" 2156 " }\n" 2157 "};\n"); 2158 } 2159 2160 TEST_F(FormatTest, IncompleteTryCatchBlocks) { 2161 verifyFormat("try {\n" 2162 " f();\n" 2163 "} catch {\n" 2164 " g();\n" 2165 "}"); 2166 verifyFormat("try {\n" 2167 " f();\n" 2168 "} catch (A a) MACRO(x) {\n" 2169 " g();\n" 2170 "} catch (B b) MACRO(x) {\n" 2171 " g();\n" 2172 "}"); 2173 } 2174 2175 TEST_F(FormatTest, FormatTryCatchBraceStyles) { 2176 FormatStyle Style = getLLVMStyle(); 2177 Style.BreakBeforeBraces = FormatStyle::BS_Attach; 2178 verifyFormat("try {\n" 2179 " // something\n" 2180 "} catch (...) {\n" 2181 " // something\n" 2182 "}", 2183 Style); 2184 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 2185 verifyFormat("try {\n" 2186 " // something\n" 2187 "}\n" 2188 "catch (...) {\n" 2189 " // something\n" 2190 "}", 2191 Style); 2192 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 2193 verifyFormat("try\n" 2194 "{\n" 2195 " // something\n" 2196 "}\n" 2197 "catch (...)\n" 2198 "{\n" 2199 " // something\n" 2200 "}", 2201 Style); 2202 Style.BreakBeforeBraces = FormatStyle::BS_GNU; 2203 verifyFormat("try\n" 2204 " {\n" 2205 " // something\n" 2206 " }\n" 2207 "catch (...)\n" 2208 " {\n" 2209 " // something\n" 2210 " }", 2211 Style); 2212 } 2213 2214 TEST_F(FormatTest, FormatObjCTryCatch) { 2215 verifyFormat("@try {\n" 2216 " f();\n" 2217 "}\n" 2218 "@catch (NSException e) {\n" 2219 " @throw;\n" 2220 "}\n" 2221 "@finally {\n" 2222 " exit(42);\n" 2223 "}"); 2224 } 2225 2226 TEST_F(FormatTest, StaticInitializers) { 2227 verifyFormat("static SomeClass SC = {1, 'a'};"); 2228 2229 verifyFormat( 2230 "static SomeClass WithALoooooooooooooooooooongName = {\n" 2231 " 100000000, \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};"); 2232 2233 // Here, everything other than the "}" would fit on a line. 2234 verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n" 2235 " 10000000000000000000000000};"); 2236 EXPECT_EQ("S s = {a,\n" 2237 "\n" 2238 " b};", 2239 format("S s = {\n" 2240 " a,\n" 2241 "\n" 2242 " b\n" 2243 "};")); 2244 2245 // FIXME: This would fit into the column limit if we'd fit "{ {" on the first 2246 // line. However, the formatting looks a bit off and this probably doesn't 2247 // happen often in practice. 2248 verifyFormat("static int Variable[1] = {\n" 2249 " {1000000000000000000000000000000000000}};", 2250 getLLVMStyleWithColumns(40)); 2251 } 2252 2253 TEST_F(FormatTest, DesignatedInitializers) { 2254 verifyFormat("const struct A a = {.a = 1, .b = 2};"); 2255 verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n" 2256 " .bbbbbbbbbb = 2,\n" 2257 " .cccccccccc = 3,\n" 2258 " .dddddddddd = 4,\n" 2259 " .eeeeeeeeee = 5};"); 2260 verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n" 2261 " .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n" 2262 " .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n" 2263 " .ccccccccccccccccccccccccccc = 3,\n" 2264 " .ddddddddddddddddddddddddddd = 4,\n" 2265 " .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};"); 2266 2267 verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};"); 2268 } 2269 2270 TEST_F(FormatTest, NestedStaticInitializers) { 2271 verifyFormat("static A x = {{{}}};\n"); 2272 verifyFormat("static A x = {{{init1, init2, init3, init4},\n" 2273 " {init1, init2, init3, init4}}};", 2274 getLLVMStyleWithColumns(50)); 2275 2276 verifyFormat("somes Status::global_reps[3] = {\n" 2277 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2278 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2279 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};", 2280 getLLVMStyleWithColumns(60)); 2281 verifyGoogleFormat("SomeType Status::global_reps[3] = {\n" 2282 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2283 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2284 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};"); 2285 verifyFormat( 2286 "CGRect cg_rect = {{rect.fLeft, rect.fTop},\n" 2287 " {rect.fRight - rect.fLeft, rect.fBottom - rect.fTop}};"); 2288 2289 verifyFormat( 2290 "SomeArrayOfSomeType a = {\n" 2291 " {{1, 2, 3},\n" 2292 " {1, 2, 3},\n" 2293 " {111111111111111111111111111111, 222222222222222222222222222222,\n" 2294 " 333333333333333333333333333333},\n" 2295 " {1, 2, 3},\n" 2296 " {1, 2, 3}}};"); 2297 verifyFormat( 2298 "SomeArrayOfSomeType a = {\n" 2299 " {{1, 2, 3}},\n" 2300 " {{1, 2, 3}},\n" 2301 " {{111111111111111111111111111111, 222222222222222222222222222222,\n" 2302 " 333333333333333333333333333333}},\n" 2303 " {{1, 2, 3}},\n" 2304 " {{1, 2, 3}}};"); 2305 2306 verifyFormat( 2307 "struct {\n" 2308 " unsigned bit;\n" 2309 " const char *const name;\n" 2310 "} kBitsToOs[] = {{kOsMac, \"Mac\"},\n" 2311 " {kOsWin, \"Windows\"},\n" 2312 " {kOsLinux, \"Linux\"},\n" 2313 " {kOsCrOS, \"Chrome OS\"}};"); 2314 } 2315 2316 TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) { 2317 verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2318 " \\\n" 2319 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)"); 2320 } 2321 2322 TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) { 2323 verifyFormat("virtual void write(ELFWriter *writerrr,\n" 2324 " OwningPtr<FileOutputBuffer> &buffer) = 0;"); 2325 } 2326 2327 TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) { 2328 verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3", 2329 getLLVMStyleWithColumns(40)); 2330 verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2331 getLLVMStyleWithColumns(40)); 2332 EXPECT_EQ("#define Q \\\n" 2333 " \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\" \\\n" 2334 " \"aaaaaaaa.cpp\"", 2335 format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2336 getLLVMStyleWithColumns(40))); 2337 } 2338 2339 TEST_F(FormatTest, UnderstandsLinePPDirective) { 2340 EXPECT_EQ("# 123 \"A string literal\"", 2341 format(" # 123 \"A string literal\"")); 2342 } 2343 2344 TEST_F(FormatTest, LayoutUnknownPPDirective) { 2345 EXPECT_EQ("#;", format("#;")); 2346 verifyFormat("#\n;\n;\n;"); 2347 } 2348 2349 TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) { 2350 EXPECT_EQ("#line 42 \"test\"\n", 2351 format("# \\\n line \\\n 42 \\\n \"test\"\n")); 2352 EXPECT_EQ("#define A B\n", format("# \\\n define \\\n A \\\n B\n", 2353 getLLVMStyleWithColumns(12))); 2354 } 2355 2356 TEST_F(FormatTest, EndOfFileEndsPPDirective) { 2357 EXPECT_EQ("#line 42 \"test\"", 2358 format("# \\\n line \\\n 42 \\\n \"test\"")); 2359 EXPECT_EQ("#define A B", format("# \\\n define \\\n A \\\n B")); 2360 } 2361 2362 TEST_F(FormatTest, DoesntRemoveUnknownTokens) { 2363 verifyFormat("#define A \\x20"); 2364 verifyFormat("#define A \\ x20"); 2365 EXPECT_EQ("#define A \\ x20", format("#define A \\ x20")); 2366 verifyFormat("#define A ''"); 2367 verifyFormat("#define A ''qqq"); 2368 verifyFormat("#define A `qqq"); 2369 verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");"); 2370 EXPECT_EQ("const char *c = STRINGIFY(\n" 2371 "\\na : b);", 2372 format("const char * c = STRINGIFY(\n" 2373 "\\na : b);")); 2374 } 2375 2376 TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) { 2377 verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13)); 2378 verifyFormat("#define A( \\\n BB)", getLLVMStyleWithColumns(12)); 2379 verifyFormat("#define A( \\\n A, B)", getLLVMStyleWithColumns(12)); 2380 // FIXME: We never break before the macro name. 2381 verifyFormat("#define AA( \\\n B)", getLLVMStyleWithColumns(12)); 2382 2383 verifyFormat("#define A A\n#define A A"); 2384 verifyFormat("#define A(X) A\n#define A A"); 2385 2386 verifyFormat("#define Something Other", getLLVMStyleWithColumns(23)); 2387 verifyFormat("#define Something \\\n Other", getLLVMStyleWithColumns(22)); 2388 } 2389 2390 TEST_F(FormatTest, HandlePreprocessorDirectiveContext) { 2391 EXPECT_EQ("// somecomment\n" 2392 "#include \"a.h\"\n" 2393 "#define A( \\\n" 2394 " A, B)\n" 2395 "#include \"b.h\"\n" 2396 "// somecomment\n", 2397 format(" // somecomment\n" 2398 " #include \"a.h\"\n" 2399 "#define A(A,\\\n" 2400 " B)\n" 2401 " #include \"b.h\"\n" 2402 " // somecomment\n", 2403 getLLVMStyleWithColumns(13))); 2404 } 2405 2406 TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); } 2407 2408 TEST_F(FormatTest, LayoutCodeInMacroDefinitions) { 2409 EXPECT_EQ("#define A \\\n" 2410 " c; \\\n" 2411 " e;\n" 2412 "f;", 2413 format("#define A c; e;\n" 2414 "f;", 2415 getLLVMStyleWithColumns(14))); 2416 } 2417 2418 TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); } 2419 2420 TEST_F(FormatTest, AlwaysFormatsEntireMacroDefinitions) { 2421 EXPECT_EQ("int i;\n" 2422 "#define A \\\n" 2423 " int i; \\\n" 2424 " int j\n" 2425 "int k;", 2426 format("int i;\n" 2427 "#define A \\\n" 2428 " int i ; \\\n" 2429 " int j\n" 2430 "int k;", 2431 8, 0, getGoogleStyle())); // 8: position of "#define". 2432 EXPECT_EQ("int i;\n" 2433 "#define A \\\n" 2434 " int i; \\\n" 2435 " int j\n" 2436 "int k;", 2437 format("int i;\n" 2438 "#define A \\\n" 2439 " int i ; \\\n" 2440 " int j\n" 2441 "int k;", 2442 45, 0, getGoogleStyle())); // 45: position of "j". 2443 } 2444 2445 TEST_F(FormatTest, MacroDefinitionInsideStatement) { 2446 EXPECT_EQ("int x,\n" 2447 "#define A\n" 2448 " y;", 2449 format("int x,\n#define A\ny;")); 2450 } 2451 2452 TEST_F(FormatTest, HashInMacroDefinition) { 2453 EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle())); 2454 verifyFormat("#define A \\\n b #c;", getLLVMStyleWithColumns(11)); 2455 verifyFormat("#define A \\\n" 2456 " { \\\n" 2457 " f(#c); \\\n" 2458 " }", 2459 getLLVMStyleWithColumns(11)); 2460 2461 verifyFormat("#define A(X) \\\n" 2462 " void function##X()", 2463 getLLVMStyleWithColumns(22)); 2464 2465 verifyFormat("#define A(a, b, c) \\\n" 2466 " void a##b##c()", 2467 getLLVMStyleWithColumns(22)); 2468 2469 verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22)); 2470 } 2471 2472 TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) { 2473 EXPECT_EQ("#define A (x)", format("#define A (x)")); 2474 EXPECT_EQ("#define A(x)", format("#define A(x)")); 2475 } 2476 2477 TEST_F(FormatTest, EmptyLinesInMacroDefinitions) { 2478 EXPECT_EQ("#define A b;", format("#define A \\\n" 2479 " \\\n" 2480 " b;", 2481 getLLVMStyleWithColumns(25))); 2482 EXPECT_EQ("#define A \\\n" 2483 " \\\n" 2484 " a; \\\n" 2485 " b;", 2486 format("#define A \\\n" 2487 " \\\n" 2488 " a; \\\n" 2489 " b;", 2490 getLLVMStyleWithColumns(11))); 2491 EXPECT_EQ("#define A \\\n" 2492 " a; \\\n" 2493 " \\\n" 2494 " b;", 2495 format("#define A \\\n" 2496 " a; \\\n" 2497 " \\\n" 2498 " b;", 2499 getLLVMStyleWithColumns(11))); 2500 } 2501 2502 TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) { 2503 verifyFormat("#define A :"); 2504 verifyFormat("#define SOMECASES \\\n" 2505 " case 1: \\\n" 2506 " case 2\n", 2507 getLLVMStyleWithColumns(20)); 2508 verifyFormat("#define A template <typename T>"); 2509 verifyFormat("#define STR(x) #x\n" 2510 "f(STR(this_is_a_string_literal{));"); 2511 verifyFormat("#pragma omp threadprivate( \\\n" 2512 " y)), // expected-warning", 2513 getLLVMStyleWithColumns(28)); 2514 } 2515 2516 TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) { 2517 verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline. 2518 EXPECT_EQ("class A : public QObject {\n" 2519 " Q_OBJECT\n" 2520 "\n" 2521 " A() {}\n" 2522 "};", 2523 format("class A : public QObject {\n" 2524 " Q_OBJECT\n" 2525 "\n" 2526 " A() {\n}\n" 2527 "} ;")); 2528 EXPECT_EQ("SOME_MACRO\n" 2529 "namespace {\n" 2530 "void f();\n" 2531 "}", 2532 format("SOME_MACRO\n" 2533 " namespace {\n" 2534 "void f( );\n" 2535 "}")); 2536 // Only if the identifier contains at least 5 characters. 2537 EXPECT_EQ("HTTP f();", 2538 format("HTTP\nf();")); 2539 EXPECT_EQ("MACRO\nf();", 2540 format("MACRO\nf();")); 2541 // Only if everything is upper case. 2542 EXPECT_EQ("class A : public QObject {\n" 2543 " Q_Object A() {}\n" 2544 "};", 2545 format("class A : public QObject {\n" 2546 " Q_Object\n" 2547 " A() {\n}\n" 2548 "} ;")); 2549 } 2550 2551 TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) { 2552 EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2553 "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2554 "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2555 "class X {};\n" 2556 "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2557 "int *createScopDetectionPass() { return 0; }", 2558 format(" INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2559 " INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2560 " INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2561 " class X {};\n" 2562 " INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2563 " int *createScopDetectionPass() { return 0; }")); 2564 // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as 2565 // braces, so that inner block is indented one level more. 2566 EXPECT_EQ("int q() {\n" 2567 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2568 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2569 " IPC_END_MESSAGE_MAP()\n" 2570 "}", 2571 format("int q() {\n" 2572 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2573 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2574 " IPC_END_MESSAGE_MAP()\n" 2575 "}")); 2576 2577 // Same inside macros. 2578 EXPECT_EQ("#define LIST(L) \\\n" 2579 " L(A) \\\n" 2580 " L(B) \\\n" 2581 " L(C)", 2582 format("#define LIST(L) \\\n" 2583 " L(A) \\\n" 2584 " L(B) \\\n" 2585 " L(C)", 2586 getGoogleStyle())); 2587 2588 // These must not be recognized as macros. 2589 EXPECT_EQ("int q() {\n" 2590 " f(x);\n" 2591 " f(x) {}\n" 2592 " f(x)->g();\n" 2593 " f(x)->*g();\n" 2594 " f(x).g();\n" 2595 " f(x) = x;\n" 2596 " f(x) += x;\n" 2597 " f(x) -= x;\n" 2598 " f(x) *= x;\n" 2599 " f(x) /= x;\n" 2600 " f(x) %= x;\n" 2601 " f(x) &= x;\n" 2602 " f(x) |= x;\n" 2603 " f(x) ^= x;\n" 2604 " f(x) >>= x;\n" 2605 " f(x) <<= x;\n" 2606 " f(x)[y].z();\n" 2607 " LOG(INFO) << x;\n" 2608 " ifstream(x) >> x;\n" 2609 "}\n", 2610 format("int q() {\n" 2611 " f(x)\n;\n" 2612 " f(x)\n {}\n" 2613 " f(x)\n->g();\n" 2614 " f(x)\n->*g();\n" 2615 " f(x)\n.g();\n" 2616 " f(x)\n = x;\n" 2617 " f(x)\n += x;\n" 2618 " f(x)\n -= x;\n" 2619 " f(x)\n *= x;\n" 2620 " f(x)\n /= x;\n" 2621 " f(x)\n %= x;\n" 2622 " f(x)\n &= x;\n" 2623 " f(x)\n |= x;\n" 2624 " f(x)\n ^= x;\n" 2625 " f(x)\n >>= x;\n" 2626 " f(x)\n <<= x;\n" 2627 " f(x)\n[y].z();\n" 2628 " LOG(INFO)\n << x;\n" 2629 " ifstream(x)\n >> x;\n" 2630 "}\n")); 2631 EXPECT_EQ("int q() {\n" 2632 " F(x)\n" 2633 " if (1) {\n" 2634 " }\n" 2635 " F(x)\n" 2636 " while (1) {\n" 2637 " }\n" 2638 " F(x)\n" 2639 " G(x);\n" 2640 " F(x)\n" 2641 " try {\n" 2642 " Q();\n" 2643 " } catch (...) {\n" 2644 " }\n" 2645 "}\n", 2646 format("int q() {\n" 2647 "F(x)\n" 2648 "if (1) {}\n" 2649 "F(x)\n" 2650 "while (1) {}\n" 2651 "F(x)\n" 2652 "G(x);\n" 2653 "F(x)\n" 2654 "try { Q(); } catch (...) {}\n" 2655 "}\n")); 2656 EXPECT_EQ("class A {\n" 2657 " A() : t(0) {}\n" 2658 " A(int i) noexcept() : {}\n" 2659 " A(X x)\n" // FIXME: function-level try blocks are broken. 2660 " try : t(0) {\n" 2661 " } catch (...) {\n" 2662 " }\n" 2663 "};", 2664 format("class A {\n" 2665 " A()\n : t(0) {}\n" 2666 " A(int i)\n noexcept() : {}\n" 2667 " A(X x)\n" 2668 " try : t(0) {} catch (...) {}\n" 2669 "};")); 2670 EXPECT_EQ( 2671 "class SomeClass {\n" 2672 "public:\n" 2673 " SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2674 "};", 2675 format("class SomeClass {\n" 2676 "public:\n" 2677 " SomeClass()\n" 2678 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2679 "};")); 2680 EXPECT_EQ( 2681 "class SomeClass {\n" 2682 "public:\n" 2683 " SomeClass()\n" 2684 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2685 "};", 2686 format("class SomeClass {\n" 2687 "public:\n" 2688 " SomeClass()\n" 2689 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2690 "};", getLLVMStyleWithColumns(40))); 2691 } 2692 2693 TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) { 2694 verifyFormat("#define A \\\n" 2695 " f({ \\\n" 2696 " g(); \\\n" 2697 " });", getLLVMStyleWithColumns(11)); 2698 } 2699 2700 TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) { 2701 EXPECT_EQ("{\n {\n#define A\n }\n}", format("{{\n#define A\n}}")); 2702 } 2703 2704 TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) { 2705 verifyFormat("{\n { a #c; }\n}"); 2706 } 2707 2708 TEST_F(FormatTest, FormatUnbalancedStructuralElements) { 2709 EXPECT_EQ("#define A \\\n { \\\n {\nint i;", 2710 format("#define A { {\nint i;", getLLVMStyleWithColumns(11))); 2711 EXPECT_EQ("#define A \\\n } \\\n }\nint i;", 2712 format("#define A } }\nint i;", getLLVMStyleWithColumns(11))); 2713 } 2714 2715 TEST_F(FormatTest, EscapedNewlineAtStartOfToken) { 2716 EXPECT_EQ( 2717 "#define A \\\n int i; \\\n int j;", 2718 format("#define A \\\nint i;\\\n int j;", getLLVMStyleWithColumns(11))); 2719 EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();")); 2720 } 2721 2722 TEST_F(FormatTest, NoEscapedNewlineHandlingInBlockComments) { 2723 EXPECT_EQ("/* \\ \\ \\\n*/", format("\\\n/* \\ \\ \\\n*/")); 2724 } 2725 2726 TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) { 2727 verifyFormat("#define A \\\n" 2728 " int v( \\\n" 2729 " a); \\\n" 2730 " int i;", 2731 getLLVMStyleWithColumns(11)); 2732 } 2733 2734 TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) { 2735 EXPECT_EQ( 2736 "#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2737 " \\\n" 2738 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 2739 "\n" 2740 "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 2741 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n", 2742 format(" #define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2743 "\\\n" 2744 "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 2745 " \n" 2746 " AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 2747 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n")); 2748 } 2749 2750 TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) { 2751 EXPECT_EQ("int\n" 2752 "#define A\n" 2753 " a;", 2754 format("int\n#define A\na;")); 2755 verifyFormat("functionCallTo(\n" 2756 " someOtherFunction(\n" 2757 " withSomeParameters, whichInSequence,\n" 2758 " areLongerThanALine(andAnotherCall,\n" 2759 "#define A B\n" 2760 " withMoreParamters,\n" 2761 " whichStronglyInfluenceTheLayout),\n" 2762 " andMoreParameters),\n" 2763 " trailing);", 2764 getLLVMStyleWithColumns(69)); 2765 verifyFormat("Foo::Foo()\n" 2766 "#ifdef BAR\n" 2767 " : baz(0)\n" 2768 "#endif\n" 2769 "{\n" 2770 "}"); 2771 verifyFormat("void f() {\n" 2772 " if (true)\n" 2773 "#ifdef A\n" 2774 " f(42);\n" 2775 " x();\n" 2776 "#else\n" 2777 " g();\n" 2778 " x();\n" 2779 "#endif\n" 2780 "}"); 2781 verifyFormat("void f(param1, param2,\n" 2782 " param3,\n" 2783 "#ifdef A\n" 2784 " param4(param5,\n" 2785 "#ifdef A1\n" 2786 " param6,\n" 2787 "#ifdef A2\n" 2788 " param7),\n" 2789 "#else\n" 2790 " param8),\n" 2791 " param9,\n" 2792 "#endif\n" 2793 " param10,\n" 2794 "#endif\n" 2795 " param11)\n" 2796 "#else\n" 2797 " param12)\n" 2798 "#endif\n" 2799 "{\n" 2800 " x();\n" 2801 "}", 2802 getLLVMStyleWithColumns(28)); 2803 verifyFormat("#if 1\n" 2804 "int i;"); 2805 verifyFormat( 2806 "#if 1\n" 2807 "#endif\n" 2808 "#if 1\n" 2809 "#else\n" 2810 "#endif\n"); 2811 verifyFormat("DEBUG({\n" 2812 " return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 2813 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" 2814 "});\n" 2815 "#if a\n" 2816 "#else\n" 2817 "#endif"); 2818 } 2819 2820 TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) { 2821 verifyFormat("#endif\n" 2822 "#if B"); 2823 } 2824 2825 TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) { 2826 FormatStyle SingleLine = getLLVMStyle(); 2827 SingleLine.AllowShortIfStatementsOnASingleLine = true; 2828 verifyFormat( 2829 "#if 0\n" 2830 "#elif 1\n" 2831 "#endif\n" 2832 "void foo() {\n" 2833 " if (test) foo2();\n" 2834 "}", 2835 SingleLine); 2836 } 2837 2838 TEST_F(FormatTest, LayoutBlockInsideParens) { 2839 EXPECT_EQ("functionCall({ int i; });", format(" functionCall ( {int i;} );")); 2840 EXPECT_EQ("functionCall({\n" 2841 " int i;\n" 2842 " int j;\n" 2843 "});", 2844 format(" functionCall ( {int i;int j;} );")); 2845 EXPECT_EQ("functionCall({\n" 2846 " int i;\n" 2847 " int j;\n" 2848 " },\n" 2849 " aaaa, bbbb, cccc);", 2850 format(" functionCall ( {int i;int j;}, aaaa, bbbb, cccc);")); 2851 EXPECT_EQ("functionCall(aaaa, bbbb, { int i; });", 2852 format(" functionCall (aaaa, bbbb, {int i;});")); 2853 EXPECT_EQ("functionCall(aaaa, bbbb, {\n" 2854 " int i;\n" 2855 " int j;\n" 2856 "});", 2857 format(" functionCall (aaaa, bbbb, {int i;int j;});")); 2858 EXPECT_EQ("functionCall(aaaa, bbbb, { int i; });", 2859 format(" functionCall (aaaa, bbbb, {int i;});")); 2860 verifyFormat( 2861 "Aaa({\n" 2862 " int i; // break\n" 2863 " },\n" 2864 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 2865 " ccccccccccccccccc));"); 2866 verifyFormat("DEBUG({\n" 2867 " if (a)\n" 2868 " f();\n" 2869 "});"); 2870 } 2871 2872 TEST_F(FormatTest, LayoutBlockInsideStatement) { 2873 EXPECT_EQ("SOME_MACRO { int i; }\n" 2874 "int i;", 2875 format(" SOME_MACRO {int i;} int i;")); 2876 } 2877 2878 TEST_F(FormatTest, LayoutNestedBlocks) { 2879 verifyFormat("void AddOsStrings(unsigned bitmask) {\n" 2880 " struct s {\n" 2881 " int i;\n" 2882 " };\n" 2883 " s kBitsToOs[] = {{10}};\n" 2884 " for (int i = 0; i < 10; ++i)\n" 2885 " return;\n" 2886 "}"); 2887 verifyFormat("call(parameter, {\n" 2888 " something();\n" 2889 " // Comment using all columns.\n" 2890 " somethingelse();\n" 2891 "});", 2892 getLLVMStyleWithColumns(40)); 2893 verifyFormat("DEBUG( //\n" 2894 " { f(); }, a);"); 2895 verifyFormat("DEBUG( //\n" 2896 " {\n" 2897 " f(); //\n" 2898 " },\n" 2899 " a);"); 2900 2901 EXPECT_EQ("call(parameter, {\n" 2902 " something();\n" 2903 " // Comment too\n" 2904 " // looooooooooong.\n" 2905 " somethingElse();\n" 2906 "});", 2907 format("call(parameter, {\n" 2908 " something();\n" 2909 " // Comment too looooooooooong.\n" 2910 " somethingElse();\n" 2911 "});", 2912 getLLVMStyleWithColumns(29))); 2913 EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int i; });")); 2914 EXPECT_EQ("DEBUG({ // comment\n" 2915 " int i;\n" 2916 "});", 2917 format("DEBUG({ // comment\n" 2918 "int i;\n" 2919 "});")); 2920 EXPECT_EQ("DEBUG({\n" 2921 " int i;\n" 2922 "\n" 2923 " // comment\n" 2924 " int j;\n" 2925 "});", 2926 format("DEBUG({\n" 2927 " int i;\n" 2928 "\n" 2929 " // comment\n" 2930 " int j;\n" 2931 "});")); 2932 2933 verifyFormat("DEBUG({\n" 2934 " if (a)\n" 2935 " return;\n" 2936 "});"); 2937 verifyGoogleFormat("DEBUG({\n" 2938 " if (a) return;\n" 2939 "});"); 2940 FormatStyle Style = getGoogleStyle(); 2941 Style.ColumnLimit = 45; 2942 verifyFormat("Debug(aaaaa, {\n" 2943 " if (aaaaaaaaaaaaaaaaaaaaaaaa)\n" 2944 " return;\n" 2945 " },\n" 2946 " a);", Style); 2947 } 2948 2949 TEST_F(FormatTest, IndividualStatementsOfNestedBlocks) { 2950 EXPECT_EQ("DEBUG({\n" 2951 " int i;\n" 2952 " int j;\n" 2953 "});", 2954 format("DEBUG( {\n" 2955 " int i;\n" 2956 " int j;\n" 2957 "} ) ;", 2958 20, 1, getLLVMStyle())); 2959 EXPECT_EQ("DEBUG( {\n" 2960 " int i;\n" 2961 " int j;\n" 2962 "} ) ;", 2963 format("DEBUG( {\n" 2964 " int i;\n" 2965 " int j;\n" 2966 "} ) ;", 2967 41, 1, getLLVMStyle())); 2968 EXPECT_EQ("DEBUG( {\n" 2969 " int i;\n" 2970 " int j;\n" 2971 "} ) ;", 2972 format("DEBUG( {\n" 2973 " int i;\n" 2974 " int j;\n" 2975 "} ) ;", 2976 41, 1, getLLVMStyle())); 2977 EXPECT_EQ("DEBUG({\n" 2978 " int i;\n" 2979 " int j;\n" 2980 "});", 2981 format("DEBUG( {\n" 2982 " int i;\n" 2983 " int j;\n" 2984 "} ) ;", 2985 20, 1, getLLVMStyle())); 2986 2987 EXPECT_EQ("Debug({\n" 2988 " if (aaaaaaaaaaaaaaaaaaaaaaaa)\n" 2989 " return;\n" 2990 " },\n" 2991 " a);", 2992 format("Debug({\n" 2993 " if (aaaaaaaaaaaaaaaaaaaaaaaa)\n" 2994 " return;\n" 2995 " },\n" 2996 " a);", 2997 50, 1, getLLVMStyle())); 2998 EXPECT_EQ("DEBUG({\n" 2999 " DEBUG({\n" 3000 " int a;\n" 3001 " int b;\n" 3002 " }) ;\n" 3003 "});", 3004 format("DEBUG({\n" 3005 " DEBUG({\n" 3006 " int a;\n" 3007 " int b;\n" // Format this line only. 3008 " }) ;\n" // Don't touch this line. 3009 "});", 3010 35, 0, getLLVMStyle())); 3011 EXPECT_EQ("DEBUG({\n" 3012 " int a; //\n" 3013 "});", 3014 format("DEBUG({\n" 3015 " int a; //\n" 3016 "});", 3017 0, 0, getLLVMStyle())); 3018 } 3019 3020 TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) { 3021 EXPECT_EQ("{}", format("{}")); 3022 verifyFormat("enum E {};"); 3023 verifyFormat("enum E {}"); 3024 } 3025 3026 //===----------------------------------------------------------------------===// 3027 // Line break tests. 3028 //===----------------------------------------------------------------------===// 3029 3030 TEST_F(FormatTest, PreventConfusingIndents) { 3031 verifyFormat( 3032 "void f() {\n" 3033 " SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n" 3034 " parameter, parameter, parameter)),\n" 3035 " SecondLongCall(parameter));\n" 3036 "}"); 3037 verifyFormat( 3038 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3039 " aaaaaaaaaaaaaaaaaaaaaaaa(\n" 3040 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3041 " aaaaaaaaaaaaaaaaaaaaaaaa);"); 3042 verifyFormat( 3043 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3044 " [aaaaaaaaaaaaaaaaaaaaaaaa\n" 3045 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 3046 " [aaaaaaaaaaaaaaaaaaaaaaaa]];"); 3047 verifyFormat( 3048 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 3049 " aaaaaaaaaaaaaaaaaaaaaaaa<\n" 3050 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n" 3051 " aaaaaaaaaaaaaaaaaaaaaaaa>;"); 3052 verifyFormat("int a = bbbb && ccc && fffff(\n" 3053 "#define A Just forcing a new line\n" 3054 " ddd);"); 3055 } 3056 3057 TEST_F(FormatTest, LineBreakingInBinaryExpressions) { 3058 verifyFormat( 3059 "bool aaaaaaa =\n" 3060 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n" 3061 " bbbbbbbb();"); 3062 verifyFormat( 3063 "bool aaaaaaa =\n" 3064 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n" 3065 " bbbbbbbb();"); 3066 3067 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3068 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n" 3069 " ccccccccc == ddddddddddd;"); 3070 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3071 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n" 3072 " ccccccccc == ddddddddddd;"); 3073 verifyFormat( 3074 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 3075 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n" 3076 " ccccccccc == ddddddddddd;"); 3077 3078 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3079 " aaaaaa) &&\n" 3080 " bbbbbb && cccccc;"); 3081 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3082 " aaaaaa) >>\n" 3083 " bbbbbb;"); 3084 verifyFormat("Whitespaces.addUntouchableComment(\n" 3085 " SourceMgr.getSpellingColumnNumber(\n" 3086 " TheLine.Last->FormatTok.Tok.getLocation()) -\n" 3087 " 1);"); 3088 3089 verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3090 " bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n" 3091 " cccccc) {\n}"); 3092 3093 // If the LHS of a comparison is not a binary expression itself, the 3094 // additional linebreak confuses many people. 3095 verifyFormat( 3096 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3097 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n" 3098 "}"); 3099 verifyFormat( 3100 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3101 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3102 "}"); 3103 verifyFormat( 3104 "if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n" 3105 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3106 "}"); 3107 // Even explicit parentheses stress the precedence enough to make the 3108 // additional break unnecessary. 3109 verifyFormat( 3110 "if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3111 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3112 "}"); 3113 // This cases is borderline, but with the indentation it is still readable. 3114 verifyFormat( 3115 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3116 " aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3117 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 3118 "}", 3119 getLLVMStyleWithColumns(75)); 3120 3121 // If the LHS is a binary expression, we should still use the additional break 3122 // as otherwise the formatting hides the operator precedence. 3123 verifyFormat( 3124 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3125 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3126 " 5) {\n" 3127 "}"); 3128 3129 FormatStyle OnePerLine = getLLVMStyle(); 3130 OnePerLine.BinPackParameters = false; 3131 verifyFormat( 3132 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3133 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3134 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}", 3135 OnePerLine); 3136 } 3137 3138 TEST_F(FormatTest, ExpressionIndentation) { 3139 verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3140 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3141 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3142 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3143 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n" 3144 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n" 3145 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3146 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n" 3147 " ccccccccccccccccccccccccccccccccccccccccc;"); 3148 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3149 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3150 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3151 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3152 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3153 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3154 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3155 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3156 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3157 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3158 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3159 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3160 verifyFormat("if () {\n" 3161 "} else if (aaaaa &&\n" 3162 " bbbbb > // break\n" 3163 " ccccc) {\n" 3164 "}"); 3165 3166 // Presence of a trailing comment used to change indentation of b. 3167 verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n" 3168 " b;\n" 3169 "return aaaaaaaaaaaaaaaaaaa +\n" 3170 " b; //", 3171 getLLVMStyleWithColumns(30)); 3172 } 3173 3174 TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) { 3175 // Not sure what the best system is here. Like this, the LHS can be found 3176 // immediately above an operator (everything with the same or a higher 3177 // indent). The RHS is aligned right of the operator and so compasses 3178 // everything until something with the same indent as the operator is found. 3179 // FIXME: Is this a good system? 3180 FormatStyle Style = getLLVMStyle(); 3181 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 3182 verifyFormat( 3183 "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3184 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3185 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3186 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3187 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3188 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3189 " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3190 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3191 " > ccccccccccccccccccccccccccccccccccccccccc;", 3192 Style); 3193 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3194 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3195 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3196 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3197 Style); 3198 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3199 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3200 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3201 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3202 Style); 3203 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3204 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3205 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3206 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3207 Style); 3208 verifyFormat("if () {\n" 3209 "} else if (aaaaa\n" 3210 " && bbbbb // break\n" 3211 " > ccccc) {\n" 3212 "}", 3213 Style); 3214 3215 // Forced by comments. 3216 verifyFormat( 3217 "unsigned ContentSize =\n" 3218 " sizeof(int16_t) // DWARF ARange version number\n" 3219 " + sizeof(int32_t) // Offset of CU in the .debug_info section\n" 3220 " + sizeof(int8_t) // Pointer Size (in bytes)\n" 3221 " + sizeof(int8_t); // Segment Size (in bytes)"); 3222 3223 verifyFormat("return boost::fusion::at_c<0>(iiii).second\n" 3224 " == boost::fusion::at_c<1>(iiii).second;", 3225 Style); 3226 3227 Style.ColumnLimit = 60; 3228 verifyFormat("zzzzzzzzzz\n" 3229 " = bbbbbbbbbbbbbbbbb\n" 3230 " >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);", 3231 Style); 3232 } 3233 3234 TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) { 3235 FormatStyle Style = getLLVMStyle(); 3236 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; 3237 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 3238 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3239 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;", Style); 3240 3241 } 3242 3243 TEST_F(FormatTest, ConstructorInitializers) { 3244 verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}"); 3245 verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}", 3246 getLLVMStyleWithColumns(45)); 3247 verifyFormat("Constructor()\n" 3248 " : Inttializer(FitsOnTheLine) {}", 3249 getLLVMStyleWithColumns(44)); 3250 verifyFormat("Constructor()\n" 3251 " : Inttializer(FitsOnTheLine) {}", 3252 getLLVMStyleWithColumns(43)); 3253 3254 verifyFormat( 3255 "SomeClass::Constructor()\n" 3256 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3257 3258 verifyFormat( 3259 "SomeClass::Constructor()\n" 3260 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3261 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}"); 3262 verifyFormat( 3263 "SomeClass::Constructor()\n" 3264 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3265 " aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3266 3267 verifyFormat("Constructor()\n" 3268 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3269 " aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3270 " aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3271 " aaaaaaaaaaaaaaaaaaaaaaa() {}"); 3272 3273 verifyFormat("Constructor()\n" 3274 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3275 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3276 3277 verifyFormat("Constructor(int Parameter = 0)\n" 3278 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n" 3279 " aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}"); 3280 verifyFormat("Constructor()\n" 3281 " : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n" 3282 "}", 3283 getLLVMStyleWithColumns(60)); 3284 verifyFormat("Constructor()\n" 3285 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3286 " aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}"); 3287 3288 // Here a line could be saved by splitting the second initializer onto two 3289 // lines, but that is not desirable. 3290 verifyFormat("Constructor()\n" 3291 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n" 3292 " aaaaaaaaaaa(aaaaaaaaaaa),\n" 3293 " aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3294 3295 FormatStyle OnePerLine = getLLVMStyle(); 3296 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3297 verifyFormat("SomeClass::Constructor()\n" 3298 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3299 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3300 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3301 OnePerLine); 3302 verifyFormat("SomeClass::Constructor()\n" 3303 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n" 3304 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3305 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3306 OnePerLine); 3307 verifyFormat("MyClass::MyClass(int var)\n" 3308 " : some_var_(var), // 4 space indent\n" 3309 " some_other_var_(var + 1) { // lined up\n" 3310 "}", 3311 OnePerLine); 3312 verifyFormat("Constructor()\n" 3313 " : aaaaa(aaaaaa),\n" 3314 " aaaaa(aaaaaa),\n" 3315 " aaaaa(aaaaaa),\n" 3316 " aaaaa(aaaaaa),\n" 3317 " aaaaa(aaaaaa) {}", 3318 OnePerLine); 3319 verifyFormat("Constructor()\n" 3320 " : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n" 3321 " aaaaaaaaaaaaaaaaaaaaaa) {}", 3322 OnePerLine); 3323 3324 EXPECT_EQ("Constructor()\n" 3325 " : // Comment forcing unwanted break.\n" 3326 " aaaa(aaaa) {}", 3327 format("Constructor() :\n" 3328 " // Comment forcing unwanted break.\n" 3329 " aaaa(aaaa) {}")); 3330 } 3331 3332 TEST_F(FormatTest, MemoizationTests) { 3333 // This breaks if the memoization lookup does not take \c Indent and 3334 // \c LastSpace into account. 3335 verifyFormat( 3336 "extern CFRunLoopTimerRef\n" 3337 "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n" 3338 " CFTimeInterval interval, CFOptionFlags flags,\n" 3339 " CFIndex order, CFRunLoopTimerCallBack callout,\n" 3340 " CFRunLoopTimerContext *context) {}"); 3341 3342 // Deep nesting somewhat works around our memoization. 3343 verifyFormat( 3344 "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3345 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3346 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3347 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3348 " aaaaa())))))))))))))))))))))))))))))))))))))));", 3349 getLLVMStyleWithColumns(65)); 3350 verifyFormat( 3351 "aaaaa(\n" 3352 " aaaaa,\n" 3353 " aaaaa(\n" 3354 " aaaaa,\n" 3355 " aaaaa(\n" 3356 " aaaaa,\n" 3357 " aaaaa(\n" 3358 " aaaaa,\n" 3359 " aaaaa(\n" 3360 " aaaaa,\n" 3361 " aaaaa(\n" 3362 " aaaaa,\n" 3363 " aaaaa(\n" 3364 " aaaaa,\n" 3365 " aaaaa(\n" 3366 " aaaaa,\n" 3367 " aaaaa(\n" 3368 " aaaaa,\n" 3369 " aaaaa(\n" 3370 " aaaaa,\n" 3371 " aaaaa(\n" 3372 " aaaaa,\n" 3373 " aaaaa(\n" 3374 " aaaaa,\n" 3375 " aaaaa))))))))))));", 3376 getLLVMStyleWithColumns(65)); 3377 verifyFormat( 3378 "a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(a(), a), a), a), a),\n" 3379 " a),\n" 3380 " a),\n" 3381 " a),\n" 3382 " a),\n" 3383 " a),\n" 3384 " a),\n" 3385 " a),\n" 3386 " a),\n" 3387 " a),\n" 3388 " a),\n" 3389 " a),\n" 3390 " a),\n" 3391 " a),\n" 3392 " a),\n" 3393 " a),\n" 3394 " a),\n" 3395 " a)", 3396 getLLVMStyleWithColumns(65)); 3397 3398 // This test takes VERY long when memoization is broken. 3399 FormatStyle OnePerLine = getLLVMStyle(); 3400 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3401 OnePerLine.BinPackParameters = false; 3402 std::string input = "Constructor()\n" 3403 " : aaaa(a,\n"; 3404 for (unsigned i = 0, e = 80; i != e; ++i) { 3405 input += " a,\n"; 3406 } 3407 input += " a) {}"; 3408 verifyFormat(input, OnePerLine); 3409 } 3410 3411 TEST_F(FormatTest, BreaksAsHighAsPossible) { 3412 verifyFormat( 3413 "void f() {\n" 3414 " if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n" 3415 " (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n" 3416 " f();\n" 3417 "}"); 3418 verifyFormat("if (Intervals[i].getRange().getFirst() <\n" 3419 " Intervals[i - 1].getRange().getLast()) {\n}"); 3420 } 3421 3422 TEST_F(FormatTest, BreaksFunctionDeclarations) { 3423 // Principially, we break function declarations in a certain order: 3424 // 1) break amongst arguments. 3425 verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n" 3426 " Cccccccccccccc cccccccccccccc);"); 3427 verifyFormat( 3428 "template <class TemplateIt>\n" 3429 "SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n" 3430 " TemplateIt *stop) {}"); 3431 3432 // 2) break after return type. 3433 verifyFormat( 3434 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3435 "bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);", 3436 getGoogleStyle()); 3437 3438 // 3) break after (. 3439 verifyFormat( 3440 "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n" 3441 " Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);", 3442 getGoogleStyle()); 3443 3444 // 4) break before after nested name specifiers. 3445 verifyFormat( 3446 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3447 "SomeClasssssssssssssssssssssssssssssssssssssss::\n" 3448 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);", 3449 getGoogleStyle()); 3450 3451 // However, there are exceptions, if a sufficient amount of lines can be 3452 // saved. 3453 // FIXME: The precise cut-offs wrt. the number of saved lines might need some 3454 // more adjusting. 3455 verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3456 " Cccccccccccccc cccccccccc,\n" 3457 " Cccccccccccccc cccccccccc,\n" 3458 " Cccccccccccccc cccccccccc,\n" 3459 " Cccccccccccccc cccccccccc);"); 3460 verifyFormat( 3461 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3462 "bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3463 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3464 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);", 3465 getGoogleStyle()); 3466 verifyFormat( 3467 "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3468 " Cccccccccccccc cccccccccc,\n" 3469 " Cccccccccccccc cccccccccc,\n" 3470 " Cccccccccccccc cccccccccc,\n" 3471 " Cccccccccccccc cccccccccc,\n" 3472 " Cccccccccccccc cccccccccc,\n" 3473 " Cccccccccccccc cccccccccc);"); 3474 verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 3475 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3476 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3477 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3478 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);"); 3479 3480 // Break after multi-line parameters. 3481 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3482 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3483 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3484 " bbbb bbbb);"); 3485 3486 // Treat overloaded operators like other functions. 3487 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3488 "operator>(const SomeLoooooooooooooooooooooooooogType &other);"); 3489 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3490 "operator>>(const SomeLooooooooooooooooooooooooogType &other);"); 3491 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3492 "operator<<(const SomeLooooooooooooooooooooooooogType &other);"); 3493 verifyGoogleFormat( 3494 "SomeLoooooooooooooooooooooooooooooogType operator>>(\n" 3495 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3496 verifyGoogleFormat( 3497 "SomeLoooooooooooooooooooooooooooooogType operator<<(\n" 3498 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3499 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3500 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3501 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n" 3502 "aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3503 verifyGoogleFormat( 3504 "typename aaaaaaaaaa<aaaaaa>::aaaaaaaaaaa\n" 3505 "aaaaaaaaaa<aaaaaa>::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3506 " bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}"); 3507 } 3508 3509 TEST_F(FormatTest, TrailingReturnType) { 3510 verifyFormat("auto foo() -> int;\n"); 3511 verifyFormat("struct S {\n" 3512 " auto bar() const -> int;\n" 3513 "};"); 3514 verifyFormat("template <size_t Order, typename T>\n" 3515 "auto load_img(const std::string &filename)\n" 3516 " -> alias::tensor<Order, T, mem::tag::cpu> {}"); 3517 3518 // Not trailing return types. 3519 verifyFormat("void f() { auto a = b->c(); }"); 3520 } 3521 3522 TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) { 3523 // Avoid breaking before trailing 'const' or other trailing annotations, if 3524 // they are not function-like. 3525 FormatStyle Style = getGoogleStyle(); 3526 Style.ColumnLimit = 47; 3527 verifyFormat("void\n" 3528 "someLongFunction(int someLongParameter) const {\n}", 3529 getLLVMStyleWithColumns(47)); 3530 verifyFormat("LoooooongReturnType\n" 3531 "someLoooooooongFunction() const {}", 3532 getLLVMStyleWithColumns(47)); 3533 verifyFormat("LoooooongReturnType someLoooooooongFunction()\n" 3534 " const {}", 3535 Style); 3536 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3537 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;"); 3538 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3539 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;"); 3540 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3541 " aaaaa aaaaaaaaaaaaaaaaaaaa) override final;"); 3542 verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n" 3543 " aaaaaaaaaaa aaaaa) const override;"); 3544 verifyGoogleFormat( 3545 "virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 3546 " const override;"); 3547 3548 // Even if the first parameter has to be wrapped. 3549 verifyFormat("void someLongFunction(\n" 3550 " int someLongParameter) const {}", 3551 getLLVMStyleWithColumns(46)); 3552 verifyFormat("void someLongFunction(\n" 3553 " int someLongParameter) const {}", 3554 Style); 3555 verifyFormat("void someLongFunction(\n" 3556 " int someLongParameter) override {}", 3557 Style); 3558 verifyFormat("void someLongFunction(\n" 3559 " int someLongParameter) OVERRIDE {}", 3560 Style); 3561 verifyFormat("void someLongFunction(\n" 3562 " int someLongParameter) final {}", 3563 Style); 3564 verifyFormat("void someLongFunction(\n" 3565 " int someLongParameter) FINAL {}", 3566 Style); 3567 verifyFormat("void someLongFunction(\n" 3568 " int parameter) const override {}", 3569 Style); 3570 3571 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 3572 verifyFormat("void someLongFunction(\n" 3573 " int someLongParameter) const\n" 3574 "{\n" 3575 "}", 3576 Style); 3577 3578 // Unless these are unknown annotations. 3579 verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n" 3580 " aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3581 " LONG_AND_UGLY_ANNOTATION;"); 3582 3583 // Breaking before function-like trailing annotations is fine to keep them 3584 // close to their arguments. 3585 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3586 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3587 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3588 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3589 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3590 " LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}"); 3591 verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n" 3592 " AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);"); 3593 verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});"); 3594 3595 verifyFormat( 3596 "void aaaaaaaaaaaaaaaaaa()\n" 3597 " __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n" 3598 " aaaaaaaaaaaaaaaaaaaaaaaaa));"); 3599 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3600 " __attribute__((unused));"); 3601 verifyGoogleFormat( 3602 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3603 " GUARDED_BY(aaaaaaaaaaaa);"); 3604 verifyGoogleFormat( 3605 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3606 " GUARDED_BY(aaaaaaaaaaaa);"); 3607 verifyGoogleFormat( 3608 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n" 3609 " aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 3610 } 3611 3612 TEST_F(FormatTest, BreaksDesireably) { 3613 verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 3614 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 3615 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}"); 3616 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3617 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" 3618 "}"); 3619 3620 verifyFormat( 3621 "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3622 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3623 3624 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3625 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3626 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3627 3628 verifyFormat( 3629 "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3630 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 3631 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3632 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));"); 3633 3634 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3635 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3636 3637 verifyFormat( 3638 "void f() {\n" 3639 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 3640 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 3641 "}"); 3642 verifyFormat( 3643 "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3644 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3645 verifyFormat( 3646 "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3647 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3648 verifyFormat( 3649 "aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3650 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3651 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3652 3653 // Indent consistently independent of call expression. 3654 verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n" 3655 " dddddddddddddddddddddddddddddd));\n" 3656 "aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 3657 " dddddddddddddddddddddddddddddd));"); 3658 3659 // This test case breaks on an incorrect memoization, i.e. an optimization not 3660 // taking into account the StopAt value. 3661 verifyFormat( 3662 "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3663 " aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3664 " aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3665 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3666 3667 verifyFormat("{\n {\n {\n" 3668 " Annotation.SpaceRequiredBefore =\n" 3669 " Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n" 3670 " Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n" 3671 " }\n }\n}"); 3672 3673 // Break on an outer level if there was a break on an inner level. 3674 EXPECT_EQ("f(g(h(a, // comment\n" 3675 " b, c),\n" 3676 " d, e),\n" 3677 " x, y);", 3678 format("f(g(h(a, // comment\n" 3679 " b, c), d, e), x, y);")); 3680 3681 // Prefer breaking similar line breaks. 3682 verifyFormat( 3683 "const int kTrackingOptions = NSTrackingMouseMoved |\n" 3684 " NSTrackingMouseEnteredAndExited |\n" 3685 " NSTrackingActiveAlways;"); 3686 } 3687 3688 TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) { 3689 FormatStyle NoBinPacking = getGoogleStyle(); 3690 NoBinPacking.BinPackParameters = false; 3691 verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n" 3692 " aaaaaaaaaaaaaaaaaaaa,\n" 3693 " aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);", 3694 NoBinPacking); 3695 verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n" 3696 " aaaaaaaaaaaaa,\n" 3697 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));", 3698 NoBinPacking); 3699 verifyFormat( 3700 "aaaaaaaa(aaaaaaaaaaaaa,\n" 3701 " aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3702 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 3703 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3704 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));", 3705 NoBinPacking); 3706 verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 3707 " .aaaaaaaaaaaaaaaaaa();", 3708 NoBinPacking); 3709 verifyFormat("void f() {\n" 3710 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3711 " aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n" 3712 "}", 3713 NoBinPacking); 3714 3715 verifyFormat( 3716 "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3717 " aaaaaaaaaaaa,\n" 3718 " aaaaaaaaaaaa);", 3719 NoBinPacking); 3720 verifyFormat( 3721 "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n" 3722 " ddddddddddddddddddddddddddddd),\n" 3723 " test);", 3724 NoBinPacking); 3725 3726 verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n" 3727 " aaaaaaaaaaaaaaaaaaaaaaa,\n" 3728 " aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;", 3729 NoBinPacking); 3730 verifyFormat("a(\"a\"\n" 3731 " \"a\",\n" 3732 " a);"); 3733 3734 NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false; 3735 verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n" 3736 " aaaaaaaaa,\n" 3737 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 3738 NoBinPacking); 3739 verifyFormat( 3740 "void f() {\n" 3741 " aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 3742 " .aaaaaaa();\n" 3743 "}", 3744 NoBinPacking); 3745 verifyFormat( 3746 "template <class SomeType, class SomeOtherType>\n" 3747 "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}", 3748 NoBinPacking); 3749 } 3750 3751 TEST_F(FormatTest, AdaptiveOnePerLineFormatting) { 3752 FormatStyle Style = getLLVMStyleWithColumns(15); 3753 Style.ExperimentalAutoDetectBinPacking = true; 3754 EXPECT_EQ("aaa(aaaa,\n" 3755 " aaaa,\n" 3756 " aaaa);\n" 3757 "aaa(aaaa,\n" 3758 " aaaa,\n" 3759 " aaaa);", 3760 format("aaa(aaaa,\n" // one-per-line 3761 " aaaa,\n" 3762 " aaaa );\n" 3763 "aaa(aaaa, aaaa, aaaa);", // inconclusive 3764 Style)); 3765 EXPECT_EQ("aaa(aaaa, aaaa,\n" 3766 " aaaa);\n" 3767 "aaa(aaaa, aaaa,\n" 3768 " aaaa);", 3769 format("aaa(aaaa, aaaa,\n" // bin-packed 3770 " aaaa );\n" 3771 "aaa(aaaa, aaaa, aaaa);", // inconclusive 3772 Style)); 3773 } 3774 3775 TEST_F(FormatTest, FormatsBuilderPattern) { 3776 verifyFormat( 3777 "return llvm::StringSwitch<Reference::Kind>(name)\n" 3778 " .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n" 3779 " .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n" 3780 " .StartsWith(\".init\", ORDER_INIT)\n" 3781 " .StartsWith(\".fini\", ORDER_FINI)\n" 3782 " .StartsWith(\".hash\", ORDER_HASH)\n" 3783 " .Default(ORDER_TEXT);\n"); 3784 3785 verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n" 3786 " aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();"); 3787 verifyFormat( 3788 "aaaaaaa->aaaaaaa->aaaaaaaaaaaaaaaa(\n" 3789 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3790 " ->aaaaaaaa(aaaaaaaaaaaaaaa);"); 3791 verifyFormat( 3792 "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n" 3793 " aaaaaaaaaaaaaa);"); 3794 verifyFormat( 3795 "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n" 3796 " aaaaaa->aaaaaaaaaaaa()\n" 3797 " ->aaaaaaaaaaaaaaaa(\n" 3798 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3799 " ->aaaaaaaaaaaaaaaaa();"); 3800 verifyGoogleFormat( 3801 "void f() {\n" 3802 " someo->Add((new util::filetools::Handler(dir))\n" 3803 " ->OnEvent1(NewPermanentCallback(\n" 3804 " this, &HandlerHolderClass::EventHandlerCBA))\n" 3805 " ->OnEvent2(NewPermanentCallback(\n" 3806 " this, &HandlerHolderClass::EventHandlerCBB))\n" 3807 " ->OnEvent3(NewPermanentCallback(\n" 3808 " this, &HandlerHolderClass::EventHandlerCBC))\n" 3809 " ->OnEvent5(NewPermanentCallback(\n" 3810 " this, &HandlerHolderClass::EventHandlerCBD))\n" 3811 " ->OnEvent6(NewPermanentCallback(\n" 3812 " this, &HandlerHolderClass::EventHandlerCBE)));\n" 3813 "}"); 3814 3815 verifyFormat( 3816 "aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();"); 3817 verifyFormat("aaaaaaaaaaaaaaa()\n" 3818 " .aaaaaaaaaaaaaaa()\n" 3819 " .aaaaaaaaaaaaaaa()\n" 3820 " .aaaaaaaaaaaaaaa()\n" 3821 " .aaaaaaaaaaaaaaa();"); 3822 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 3823 " .aaaaaaaaaaaaaaa()\n" 3824 " .aaaaaaaaaaaaaaa()\n" 3825 " .aaaaaaaaaaaaaaa();"); 3826 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 3827 " .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 3828 " .aaaaaaaaaaaaaaa();"); 3829 verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n" 3830 " ->aaaaaaaaaaaaaae(0)\n" 3831 " ->aaaaaaaaaaaaaaa();"); 3832 3833 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 3834 " .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 3835 " .has<bbbbbbbbbbbbbbbbbbbbb>();"); 3836 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 3837 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 3838 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();"); 3839 3840 // Prefer not to break after empty parentheses. 3841 verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n" 3842 " First->LastNewlineOffset);"); 3843 } 3844 3845 TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) { 3846 verifyFormat( 3847 "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3848 " bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}"); 3849 verifyFormat( 3850 "if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n" 3851 " bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}"); 3852 3853 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 3854 " ccccccccccccccccccccccccc) {\n}"); 3855 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n" 3856 " ccccccccccccccccccccccccc) {\n}"); 3857 3858 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 3859 " ccccccccccccccccccccccccc) {\n}"); 3860 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n" 3861 " ccccccccccccccccccccccccc) {\n}"); 3862 3863 verifyFormat( 3864 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n" 3865 " ccccccccccccccccccccccccc) {\n}"); 3866 verifyFormat( 3867 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n" 3868 " ccccccccccccccccccccccccc) {\n}"); 3869 3870 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n" 3871 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n" 3872 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n" 3873 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 3874 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n" 3875 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n" 3876 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n" 3877 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 3878 3879 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n" 3880 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n" 3881 " aaaaaaaaaaaaaaa != aa) {\n}"); 3882 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n" 3883 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n" 3884 " aaaaaaaaaaaaaaa != aa) {\n}"); 3885 } 3886 3887 TEST_F(FormatTest, BreaksAfterAssignments) { 3888 verifyFormat( 3889 "unsigned Cost =\n" 3890 " TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n" 3891 " SI->getPointerAddressSpaceee());\n"); 3892 verifyFormat( 3893 "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n" 3894 " Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());"); 3895 3896 verifyFormat( 3897 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n" 3898 " aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);"); 3899 verifyFormat("unsigned OriginalStartColumn =\n" 3900 " SourceMgr.getSpellingColumnNumber(\n" 3901 " Current.FormatTok.getStartOfNonWhitespace()) -\n" 3902 " 1;"); 3903 } 3904 3905 TEST_F(FormatTest, AlignsAfterAssignments) { 3906 verifyFormat( 3907 "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3908 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 3909 verifyFormat( 3910 "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3911 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 3912 verifyFormat( 3913 "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3914 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 3915 verifyFormat( 3916 "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3917 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 3918 verifyFormat( 3919 "double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n" 3920 " aaaaaaaaaaaaaaaaaaaaaaaa +\n" 3921 " aaaaaaaaaaaaaaaaaaaaaaaa;"); 3922 } 3923 3924 TEST_F(FormatTest, AlignsAfterReturn) { 3925 verifyFormat( 3926 "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3927 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 3928 verifyFormat( 3929 "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3930 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 3931 verifyFormat( 3932 "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 3933 " aaaaaaaaaaaaaaaaaaaaaa();"); 3934 verifyFormat( 3935 "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 3936 " aaaaaaaaaaaaaaaaaaaaaa());"); 3937 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3938 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3939 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3940 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n" 3941 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 3942 verifyFormat("return\n" 3943 " // true if code is one of a or b.\n" 3944 " code == a || code == b;"); 3945 } 3946 3947 TEST_F(FormatTest, BreaksConditionalExpressions) { 3948 verifyFormat( 3949 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3950 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3951 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3952 verifyFormat( 3953 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3954 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3955 verifyFormat( 3956 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n" 3957 " : aaaaaaaaaaaaa);"); 3958 verifyFormat( 3959 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3960 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3961 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3962 " aaaaaaaaaaaaa);"); 3963 verifyFormat( 3964 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3965 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3966 " aaaaaaaaaaaaa);"); 3967 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3968 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3969 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3970 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3971 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3972 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3973 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3974 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3975 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3976 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3977 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3978 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3979 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3980 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3981 " ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3982 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3983 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3984 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3985 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3986 " : aaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 3987 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 3988 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3989 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3990 " : aaaaaaaaaaaaaaaa;"); 3991 verifyFormat( 3992 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3993 " ? aaaaaaaaaaaaaaa\n" 3994 " : aaaaaaaaaaaaaaa;"); 3995 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 3996 " aaaaaaaaa\n" 3997 " ? b\n" 3998 " : c);"); 3999 verifyFormat( 4000 "unsigned Indent =\n" 4001 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n" 4002 " ? IndentForLevel[TheLine.Level]\n" 4003 " : TheLine * 2,\n" 4004 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4005 getLLVMStyleWithColumns(70)); 4006 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4007 " ? aaaaaaaaaaaaaaa\n" 4008 " : bbbbbbbbbbbbbbb //\n" 4009 " ? ccccccccccccccc\n" 4010 " : ddddddddddddddd;"); 4011 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4012 " ? aaaaaaaaaaaaaaa\n" 4013 " : (bbbbbbbbbbbbbbb //\n" 4014 " ? ccccccccccccccc\n" 4015 " : ddddddddddddddd);"); 4016 verifyFormat( 4017 "int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4018 " ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4019 " aaaaaaaaaaaaaaaaaaaaa +\n" 4020 " aaaaaaaaaaaaaaaaaaaaa\n" 4021 " : aaaaaaaaaa;"); 4022 verifyFormat( 4023 "aaaaaa = aaaaaaaaaaaa\n" 4024 " ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4025 " : aaaaaaaaaaaaaaaaaaaaaa\n" 4026 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4027 4028 FormatStyle NoBinPacking = getLLVMStyle(); 4029 NoBinPacking.BinPackParameters = false; 4030 verifyFormat( 4031 "void f() {\n" 4032 " g(aaa,\n" 4033 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4034 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4035 " ? aaaaaaaaaaaaaaa\n" 4036 " : aaaaaaaaaaaaaaa);\n" 4037 "}", 4038 NoBinPacking); 4039 verifyFormat( 4040 "void f() {\n" 4041 " g(aaa,\n" 4042 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4043 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4044 " ?: aaaaaaaaaaaaaaa);\n" 4045 "}", 4046 NoBinPacking); 4047 } 4048 4049 TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) { 4050 FormatStyle Style = getLLVMStyle(); 4051 Style.BreakBeforeTernaryOperators = false; 4052 Style.ColumnLimit = 70; 4053 verifyFormat( 4054 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4055 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4056 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4057 Style); 4058 verifyFormat( 4059 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4060 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4061 Style); 4062 verifyFormat( 4063 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n" 4064 " aaaaaaaaaaaaa);", 4065 Style); 4066 verifyFormat( 4067 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4068 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4069 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4070 " aaaaaaaaaaaaa);", 4071 Style); 4072 verifyFormat( 4073 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4074 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4075 " aaaaaaaaaaaaa);", 4076 Style); 4077 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4078 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4079 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4080 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4081 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4082 Style); 4083 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4084 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4085 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4086 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4087 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4088 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4089 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4090 Style); 4091 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4092 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n" 4093 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4094 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4095 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4096 Style); 4097 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4098 " aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4099 " aaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4100 Style); 4101 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 4102 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4103 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4104 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4105 Style); 4106 verifyFormat( 4107 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4108 " aaaaaaaaaaaaaaa :\n" 4109 " aaaaaaaaaaaaaaa;", 4110 Style); 4111 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 4112 " aaaaaaaaa ?\n" 4113 " b :\n" 4114 " c);", 4115 Style); 4116 verifyFormat( 4117 "unsigned Indent =\n" 4118 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0 ?\n" 4119 " IndentForLevel[TheLine.Level] :\n" 4120 " TheLine * 2,\n" 4121 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4122 Style); 4123 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4124 " aaaaaaaaaaaaaaa :\n" 4125 " bbbbbbbbbbbbbbb ? //\n" 4126 " ccccccccccccccc :\n" 4127 " ddddddddddddddd;", 4128 Style); 4129 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4130 " aaaaaaaaaaaaaaa :\n" 4131 " (bbbbbbbbbbbbbbb ? //\n" 4132 " ccccccccccccccc :\n" 4133 " ddddddddddddddd);", 4134 Style); 4135 } 4136 4137 TEST_F(FormatTest, DeclarationsOfMultipleVariables) { 4138 verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n" 4139 " aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();"); 4140 verifyFormat("bool a = true, b = false;"); 4141 4142 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4143 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n" 4144 " bbbbbbbbbbbbbbbbbbbbbbbbb =\n" 4145 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);"); 4146 verifyFormat( 4147 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 4148 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n" 4149 " d = e && f;"); 4150 verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n" 4151 " c = cccccccccccccccccccc, d = dddddddddddddddddddd;"); 4152 verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" 4153 " *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;"); 4154 verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n" 4155 " ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;"); 4156 // FIXME: If multiple variables are defined, the "*" needs to move to the new 4157 // line. Also fix indent for breaking after the type, this looks bad. 4158 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*\n" 4159 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n" 4160 " * b = bbbbbbbbbbbbbbbbbbb;", 4161 getGoogleStyle()); 4162 4163 // Not ideal, but pointer-with-type does not allow much here. 4164 verifyGoogleFormat( 4165 "aaaaaaaaa* a = aaaaaaaaaaaaaaaaaaa, * b = bbbbbbbbbbbbbbbbbbb,\n" 4166 " * b = bbbbbbbbbbbbbbbbbbb, * d = ddddddddddddddddddd;"); 4167 } 4168 4169 TEST_F(FormatTest, ConditionalExpressionsInBrackets) { 4170 verifyFormat("arr[foo ? bar : baz];"); 4171 verifyFormat("f()[foo ? bar : baz];"); 4172 verifyFormat("(a + b)[foo ? bar : baz];"); 4173 verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];"); 4174 } 4175 4176 TEST_F(FormatTest, AlignsStringLiterals) { 4177 verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n" 4178 " \"short literal\");"); 4179 verifyFormat( 4180 "looooooooooooooooooooooooongFunction(\n" 4181 " \"short literal\"\n" 4182 " \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");"); 4183 verifyFormat("someFunction(\"Always break between multi-line\"\n" 4184 " \" string literals\",\n" 4185 " and, other, parameters);"); 4186 EXPECT_EQ("fun + \"1243\" /* comment */\n" 4187 " \"5678\";", 4188 format("fun + \"1243\" /* comment */\n" 4189 " \"5678\";", 4190 getLLVMStyleWithColumns(28))); 4191 EXPECT_EQ( 4192 "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 4193 " \"aaaaaaaaaaaaaaaaaaaaa\"\n" 4194 " \"aaaaaaaaaaaaaaaa\";", 4195 format("aaaaaa =" 4196 "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa " 4197 "aaaaaaaaaaaaaaaaaaaaa\" " 4198 "\"aaaaaaaaaaaaaaaa\";")); 4199 verifyFormat("a = a + \"a\"\n" 4200 " \"a\"\n" 4201 " \"a\";"); 4202 verifyFormat("f(\"a\", \"b\"\n" 4203 " \"c\");"); 4204 4205 verifyFormat( 4206 "#define LL_FORMAT \"ll\"\n" 4207 "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n" 4208 " \"d, ddddddddd: %\" LL_FORMAT \"d\");"); 4209 4210 verifyFormat("#define A(X) \\\n" 4211 " \"aaaaa\" #X \"bbbbbb\" \\\n" 4212 " \"ccccc\"", 4213 getLLVMStyleWithColumns(23)); 4214 verifyFormat("#define A \"def\"\n" 4215 "f(\"abc\" A \"ghi\"\n" 4216 " \"jkl\");"); 4217 4218 verifyFormat("f(L\"a\"\n" 4219 " L\"b\")"); 4220 verifyFormat("#define A(X) \\\n" 4221 " L\"aaaaa\" #X L\"bbbbbb\" \\\n" 4222 " L\"ccccc\"", 4223 getLLVMStyleWithColumns(25)); 4224 } 4225 4226 TEST_F(FormatTest, AlwaysBreakAfterDefinitionReturnType) { 4227 FormatStyle AfterType = getLLVMStyle(); 4228 AfterType.AlwaysBreakAfterDefinitionReturnType = true; 4229 verifyFormat("const char *\n" 4230 "f(void) {\n" // Break here. 4231 " return \"\";\n" 4232 "}\n" 4233 "const char *bar(void);\n", // No break here. 4234 AfterType); 4235 verifyFormat("template <class T>\n" 4236 "T *\n" 4237 "f(T &c) {\n" // Break here. 4238 " return NULL;\n" 4239 "}\n" 4240 "template <class T> T *f(T &c);\n", // No break here. 4241 AfterType); 4242 AfterType.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 4243 verifyFormat("const char *\n" 4244 "f(void)\n" // Break here. 4245 "{\n" 4246 " return \"\";\n" 4247 "}\n" 4248 "const char *bar(void);\n", // No break here. 4249 AfterType); 4250 verifyFormat("template <class T>\n" 4251 "T *\n" // Problem here: no line break 4252 "f(T &c)\n" // Break here. 4253 "{\n" 4254 " return NULL;\n" 4255 "}\n" 4256 "template <class T> T *f(T &c);\n", // No break here. 4257 AfterType); 4258 } 4259 4260 TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) { 4261 FormatStyle NoBreak = getLLVMStyle(); 4262 NoBreak.AlwaysBreakBeforeMultilineStrings = false; 4263 FormatStyle Break = getLLVMStyle(); 4264 Break.AlwaysBreakBeforeMultilineStrings = true; 4265 verifyFormat("aaaa = \"bbbb\"\n" 4266 " \"cccc\";", 4267 NoBreak); 4268 verifyFormat("aaaa =\n" 4269 " \"bbbb\"\n" 4270 " \"cccc\";", 4271 Break); 4272 verifyFormat("aaaa(\"bbbb\"\n" 4273 " \"cccc\");", 4274 NoBreak); 4275 verifyFormat("aaaa(\n" 4276 " \"bbbb\"\n" 4277 " \"cccc\");", 4278 Break); 4279 verifyFormat("aaaa(qqq, \"bbbb\"\n" 4280 " \"cccc\");", 4281 NoBreak); 4282 verifyFormat("aaaa(qqq,\n" 4283 " \"bbbb\"\n" 4284 " \"cccc\");", 4285 Break); 4286 verifyFormat("aaaa(qqq,\n" 4287 " L\"bbbb\"\n" 4288 " L\"cccc\");", 4289 Break); 4290 4291 // As we break before unary operators, breaking right after them is bad. 4292 verifyFormat("string foo = abc ? \"x\"\n" 4293 " \"blah blah blah blah blah blah\"\n" 4294 " : \"y\";", 4295 Break); 4296 4297 // Don't break if there is no column gain. 4298 verifyFormat("f(\"aaaa\"\n" 4299 " \"bbbb\");", 4300 Break); 4301 4302 // Treat literals with escaped newlines like multi-line string literals. 4303 EXPECT_EQ("x = \"a\\\n" 4304 "b\\\n" 4305 "c\";", 4306 format("x = \"a\\\n" 4307 "b\\\n" 4308 "c\";", 4309 NoBreak)); 4310 EXPECT_EQ("x =\n" 4311 " \"a\\\n" 4312 "b\\\n" 4313 "c\";", 4314 format("x = \"a\\\n" 4315 "b\\\n" 4316 "c\";", 4317 Break)); 4318 4319 // Exempt ObjC strings for now. 4320 EXPECT_EQ("NSString *const kString = @\"aaaa\"\n" 4321 " \"bbbb\";", 4322 format("NSString *const kString = @\"aaaa\"\n" 4323 "\"bbbb\";", 4324 Break)); 4325 } 4326 4327 TEST_F(FormatTest, AlignsPipes) { 4328 verifyFormat( 4329 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4330 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4331 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4332 verifyFormat( 4333 "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n" 4334 " << aaaaaaaaaaaaaaaaaaaa;"); 4335 verifyFormat( 4336 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4337 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4338 verifyFormat( 4339 "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n" 4340 " \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n" 4341 " << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";"); 4342 verifyFormat( 4343 "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4344 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4345 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4346 verifyFormat( 4347 "llvm::errs() << \"a: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4348 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4349 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4350 verifyFormat( 4351 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4352 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4353 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4354 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 4355 verifyFormat( 4356 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4357 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4358 4359 verifyFormat("return out << \"somepacket = {\\n\"\n" 4360 " << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n" 4361 " << \" bbbb = \" << pkt.bbbb << \"\\n\"\n" 4362 " << \" cccccc = \" << pkt.cccccc << \"\\n\"\n" 4363 " << \" ddd = [\" << pkt.ddd << \"]\\n\"\n" 4364 " << \"}\";"); 4365 4366 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 4367 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 4368 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;"); 4369 verifyFormat( 4370 "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n" 4371 " << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n" 4372 " << \"ccccccccccccccccc = \" << ccccccccccccccccc\n" 4373 " << \"ddddddddddddddddd = \" << ddddddddddddddddd\n" 4374 " << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;"); 4375 verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n" 4376 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 4377 verifyFormat( 4378 "void f() {\n" 4379 " llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n" 4380 " << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 4381 "}"); 4382 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n" 4383 " << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();"); 4384 4385 // Breaking before the first "<<" is generally not desirable. 4386 verifyFormat( 4387 "llvm::errs()\n" 4388 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4389 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4390 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4391 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4392 getLLVMStyleWithColumns(70)); 4393 verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4394 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4395 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4396 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4397 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4398 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4399 getLLVMStyleWithColumns(70)); 4400 4401 // But sometimes, breaking before the first "<<" is desirable. 4402 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n" 4403 " << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);"); 4404 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n" 4405 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4406 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4407 verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n" 4408 " << BEF << IsTemplate << Description << E->getType();"); 4409 4410 verifyFormat( 4411 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4412 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4413 4414 // Incomplete string literal. 4415 EXPECT_EQ("llvm::errs() << \"\n" 4416 " << a;", 4417 format("llvm::errs() << \"\n<<a;")); 4418 4419 verifyFormat("void f() {\n" 4420 " CHECK_EQ(aaaa, (*bbbbbbbbb)->cccccc)\n" 4421 " << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n" 4422 "}"); 4423 } 4424 4425 TEST_F(FormatTest, UnderstandsEquals) { 4426 verifyFormat( 4427 "aaaaaaaaaaaaaaaaa =\n" 4428 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4429 verifyFormat( 4430 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4431 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 4432 verifyFormat( 4433 "if (a) {\n" 4434 " f();\n" 4435 "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4436 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 4437 "}"); 4438 4439 verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4440 " 100000000 + 10000000) {\n}"); 4441 } 4442 4443 TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) { 4444 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 4445 " .looooooooooooooooooooooooooooooooooooooongFunction();"); 4446 4447 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 4448 " ->looooooooooooooooooooooooooooooooooooooongFunction();"); 4449 4450 verifyFormat( 4451 "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n" 4452 " Parameter2);"); 4453 4454 verifyFormat( 4455 "ShortObject->shortFunction(\n" 4456 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n" 4457 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);"); 4458 4459 verifyFormat("loooooooooooooongFunction(\n" 4460 " LoooooooooooooongObject->looooooooooooooooongFunction());"); 4461 4462 verifyFormat( 4463 "function(LoooooooooooooooooooooooooooooooooooongObject\n" 4464 " ->loooooooooooooooooooooooooooooooooooooooongFunction());"); 4465 4466 verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 4467 " .WillRepeatedly(Return(SomeValue));"); 4468 verifyFormat("void f() {\n" 4469 " EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 4470 " .Times(2)\n" 4471 " .WillRepeatedly(Return(SomeValue));\n" 4472 "}"); 4473 verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n" 4474 " ccccccccccccccccccccccc);"); 4475 verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4476 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa).aaaaa(aaaaa),\n" 4477 " aaaaaaaaaaaaaaaaaaaaa);"); 4478 verifyFormat("void f() {\n" 4479 " aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4480 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n" 4481 "}"); 4482 verifyFormat( 4483 "aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4484 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4485 " .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4486 " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4487 " aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 4488 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4489 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4490 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4491 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n" 4492 "}"); 4493 4494 // Here, it is not necessary to wrap at "." or "->". 4495 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n" 4496 " aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 4497 verifyFormat( 4498 "aaaaaaaaaaa->aaaaaaaaa(\n" 4499 " aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4500 " aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n"); 4501 4502 verifyFormat( 4503 "aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4504 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());"); 4505 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n" 4506 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 4507 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n" 4508 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 4509 4510 // FIXME: Should we break before .a()? 4511 verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4512 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa).a();"); 4513 4514 FormatStyle NoBinPacking = getLLVMStyle(); 4515 NoBinPacking.BinPackParameters = false; 4516 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 4517 " .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 4518 " .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n" 4519 " aaaaaaaaaaaaaaaaaaa,\n" 4520 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4521 NoBinPacking); 4522 4523 // If there is a subsequent call, change to hanging indentation. 4524 verifyFormat( 4525 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4526 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n" 4527 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4528 verifyFormat( 4529 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4530 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));"); 4531 verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4532 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4533 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4534 verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4535 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4536 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 4537 } 4538 4539 TEST_F(FormatTest, WrapsTemplateDeclarations) { 4540 verifyFormat("template <typename T>\n" 4541 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 4542 verifyFormat("template <typename T>\n" 4543 "// T should be one of {A, B}.\n" 4544 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 4545 verifyFormat( 4546 "template <typename T>\n" 4547 "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;"); 4548 verifyFormat("template <typename T>\n" 4549 "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n" 4550 " int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);"); 4551 verifyFormat( 4552 "template <typename T>\n" 4553 "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n" 4554 " int Paaaaaaaaaaaaaaaaaaaaram2);"); 4555 verifyFormat( 4556 "template <typename T>\n" 4557 "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n" 4558 " aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n" 4559 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4560 verifyFormat("template <typename T>\n" 4561 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4562 " int aaaaaaaaaaaaaaaaaaaaaa);"); 4563 verifyFormat( 4564 "template <typename T1, typename T2 = char, typename T3 = char,\n" 4565 " typename T4 = char>\n" 4566 "void f();"); 4567 verifyFormat("template <typename aaaaaaaaaaa, typename bbbbbbbbbbbbb,\n" 4568 " template <typename> class cccccccccccccccccccccc,\n" 4569 " typename ddddddddddddd>\n" 4570 "class C {};"); 4571 verifyFormat( 4572 "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n" 4573 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4574 4575 verifyFormat("void f() {\n" 4576 " a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n" 4577 " a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n" 4578 "}"); 4579 4580 verifyFormat("template <typename T> class C {};"); 4581 verifyFormat("template <typename T> void f();"); 4582 verifyFormat("template <typename T> void f() {}"); 4583 verifyFormat( 4584 "aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 4585 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4586 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n" 4587 " new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 4588 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4589 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n" 4590 " bbbbbbbbbbbbbbbbbbbbbbbb);", 4591 getLLVMStyleWithColumns(72)); 4592 EXPECT_EQ("static_cast<A< //\n" 4593 " B> *>(\n" 4594 "\n" 4595 " );", 4596 format("static_cast<A<//\n" 4597 " B>*>(\n" 4598 "\n" 4599 " );")); 4600 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4601 " const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);"); 4602 4603 FormatStyle AlwaysBreak = getLLVMStyle(); 4604 AlwaysBreak.AlwaysBreakTemplateDeclarations = true; 4605 verifyFormat("template <typename T>\nclass C {};", AlwaysBreak); 4606 verifyFormat("template <typename T>\nvoid f();", AlwaysBreak); 4607 verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak); 4608 verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4609 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n" 4610 " ccccccccccccccccccccccccccccccccccccccccccccccc);"); 4611 verifyFormat("template <template <typename> class Fooooooo,\n" 4612 " template <typename> class Baaaaaaar>\n" 4613 "struct C {};", 4614 AlwaysBreak); 4615 verifyFormat("template <typename T> // T can be A, B or C.\n" 4616 "struct C {};", 4617 AlwaysBreak); 4618 } 4619 4620 TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) { 4621 verifyFormat( 4622 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4623 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4624 verifyFormat( 4625 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4626 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4627 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 4628 4629 // FIXME: Should we have the extra indent after the second break? 4630 verifyFormat( 4631 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4632 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4633 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4634 4635 verifyFormat( 4636 "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n" 4637 " cccccccccccccccccccccccccccccccccccccccccccccc());"); 4638 4639 // Breaking at nested name specifiers is generally not desirable. 4640 verifyFormat( 4641 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4642 " aaaaaaaaaaaaaaaaaaaaaaa);"); 4643 4644 verifyFormat( 4645 "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4646 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4647 " aaaaaaaaaaaaaaaaaaaaa);", 4648 getLLVMStyleWithColumns(74)); 4649 4650 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4651 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4652 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4653 } 4654 4655 TEST_F(FormatTest, UnderstandsTemplateParameters) { 4656 verifyFormat("A<int> a;"); 4657 verifyFormat("A<A<A<int>>> a;"); 4658 verifyFormat("A<A<A<int, 2>, 3>, 4> a;"); 4659 verifyFormat("bool x = a < 1 || 2 > a;"); 4660 verifyFormat("bool x = 5 < f<int>();"); 4661 verifyFormat("bool x = f<int>() > 5;"); 4662 verifyFormat("bool x = 5 < a<int>::x;"); 4663 verifyFormat("bool x = a < 4 ? a > 2 : false;"); 4664 verifyFormat("bool x = f() ? a < 2 : a > 2;"); 4665 4666 verifyGoogleFormat("A<A<int>> a;"); 4667 verifyGoogleFormat("A<A<A<int>>> a;"); 4668 verifyGoogleFormat("A<A<A<A<int>>>> a;"); 4669 verifyGoogleFormat("A<A<int> > a;"); 4670 verifyGoogleFormat("A<A<A<int> > > a;"); 4671 verifyGoogleFormat("A<A<A<A<int> > > > a;"); 4672 verifyGoogleFormat("A<::A<int>> a;"); 4673 verifyGoogleFormat("A<::A> a;"); 4674 verifyGoogleFormat("A< ::A> a;"); 4675 verifyGoogleFormat("A< ::A<int> > a;"); 4676 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle())); 4677 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle())); 4678 EXPECT_EQ("A<::A<int>> a;", format("A< ::A<int>> a;", getGoogleStyle())); 4679 EXPECT_EQ("A<::A<int>> a;", format("A<::A<int> > a;", getGoogleStyle())); 4680 4681 verifyFormat("A<A>> a;", getChromiumStyle(FormatStyle::LK_Cpp)); 4682 4683 verifyFormat("test >> a >> b;"); 4684 verifyFormat("test << a >> b;"); 4685 4686 verifyFormat("f<int>();"); 4687 verifyFormat("template <typename T> void f() {}"); 4688 4689 // Not template parameters. 4690 verifyFormat("return a < b && c > d;"); 4691 verifyFormat("void f() {\n" 4692 " while (a < b && c > d) {\n" 4693 " }\n" 4694 "}"); 4695 verifyFormat("template <typename... Types>\n" 4696 "typename enable_if<0 < sizeof...(Types)>::type Foo() {}"); 4697 4698 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4699 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaa);", 4700 getLLVMStyleWithColumns(60)); 4701 verifyFormat("static_assert(is_convertible<A &&, B>::value, \"AAA\");"); 4702 verifyFormat("Constructor(A... a) : a_(X<A>{std::forward<A>(a)}...) {}"); 4703 } 4704 4705 TEST_F(FormatTest, UnderstandsBinaryOperators) { 4706 verifyFormat("COMPARE(a, ==, b);"); 4707 } 4708 4709 TEST_F(FormatTest, UnderstandsPointersToMembers) { 4710 verifyFormat("int A::*x;"); 4711 verifyFormat("int (S::*func)(void *);"); 4712 verifyFormat("void f() { int (S::*func)(void *); }"); 4713 verifyFormat("typedef bool *(Class::*Member)() const;"); 4714 verifyFormat("void f() {\n" 4715 " (a->*f)();\n" 4716 " a->*x;\n" 4717 " (a.*f)();\n" 4718 " ((*a).*f)();\n" 4719 " a.*x;\n" 4720 "}"); 4721 verifyFormat("void f() {\n" 4722 " (a->*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 4723 " aaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);\n" 4724 "}"); 4725 verifyFormat( 4726 "(aaaaaaaaaa->*bbbbbbb)(\n" 4727 " aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 4728 FormatStyle Style = getLLVMStyle(); 4729 Style.PointerAlignment = FormatStyle::PAS_Left; 4730 verifyFormat("typedef bool* (Class::*Member)() const;", Style); 4731 } 4732 4733 TEST_F(FormatTest, UnderstandsUnaryOperators) { 4734 verifyFormat("int a = -2;"); 4735 verifyFormat("f(-1, -2, -3);"); 4736 verifyFormat("a[-1] = 5;"); 4737 verifyFormat("int a = 5 + -2;"); 4738 verifyFormat("if (i == -1) {\n}"); 4739 verifyFormat("if (i != -1) {\n}"); 4740 verifyFormat("if (i > -1) {\n}"); 4741 verifyFormat("if (i < -1) {\n}"); 4742 verifyFormat("++(a->f());"); 4743 verifyFormat("--(a->f());"); 4744 verifyFormat("(a->f())++;"); 4745 verifyFormat("a[42]++;"); 4746 verifyFormat("if (!(a->f())) {\n}"); 4747 4748 verifyFormat("a-- > b;"); 4749 verifyFormat("b ? -a : c;"); 4750 verifyFormat("n * sizeof char16;"); 4751 verifyFormat("n * alignof char16;", getGoogleStyle()); 4752 verifyFormat("sizeof(char);"); 4753 verifyFormat("alignof(char);", getGoogleStyle()); 4754 4755 verifyFormat("return -1;"); 4756 verifyFormat("switch (a) {\n" 4757 "case -1:\n" 4758 " break;\n" 4759 "}"); 4760 verifyFormat("#define X -1"); 4761 verifyFormat("#define X -kConstant"); 4762 4763 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {-5, +3};"); 4764 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {+5, -3};"); 4765 4766 verifyFormat("int a = /* confusing comment */ -1;"); 4767 // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case. 4768 verifyFormat("int a = i /* confusing comment */++;"); 4769 } 4770 4771 TEST_F(FormatTest, DoesNotIndentRelativeToUnaryOperators) { 4772 verifyFormat("if (!aaaaaaaaaa( // break\n" 4773 " aaaaa)) {\n" 4774 "}"); 4775 verifyFormat("aaaaaaaaaa(!aaaaaaaaaa( // break\n" 4776 " aaaaa));"); 4777 verifyFormat("*aaa = aaaaaaa( // break\n" 4778 " bbbbbb);"); 4779 } 4780 4781 TEST_F(FormatTest, UnderstandsOverloadedOperators) { 4782 verifyFormat("bool operator<();"); 4783 verifyFormat("bool operator>();"); 4784 verifyFormat("bool operator=();"); 4785 verifyFormat("bool operator==();"); 4786 verifyFormat("bool operator!=();"); 4787 verifyFormat("int operator+();"); 4788 verifyFormat("int operator++();"); 4789 verifyFormat("bool operator();"); 4790 verifyFormat("bool operator()();"); 4791 verifyFormat("bool operator[]();"); 4792 verifyFormat("operator bool();"); 4793 verifyFormat("operator int();"); 4794 verifyFormat("operator void *();"); 4795 verifyFormat("operator SomeType<int>();"); 4796 verifyFormat("operator SomeType<int, int>();"); 4797 verifyFormat("operator SomeType<SomeType<int>>();"); 4798 verifyFormat("void *operator new(std::size_t size);"); 4799 verifyFormat("void *operator new[](std::size_t size);"); 4800 verifyFormat("void operator delete(void *ptr);"); 4801 verifyFormat("void operator delete[](void *ptr);"); 4802 verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n" 4803 "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);"); 4804 4805 verifyFormat( 4806 "ostream &operator<<(ostream &OutputStream,\n" 4807 " SomeReallyLongType WithSomeReallyLongValue);"); 4808 verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n" 4809 " const aaaaaaaaaaaaaaaaaaaaa &right) {\n" 4810 " return left.group < right.group;\n" 4811 "}"); 4812 verifyFormat("SomeType &operator=(const SomeType &S);"); 4813 4814 verifyGoogleFormat("operator void*();"); 4815 verifyGoogleFormat("operator SomeType<SomeType<int>>();"); 4816 verifyGoogleFormat("operator ::A();"); 4817 4818 verifyFormat("using A::operator+;"); 4819 4820 verifyFormat("Deleted &operator=(const Deleted &)& = default;"); 4821 verifyFormat("Deleted &operator=(const Deleted &)&& = delete;"); 4822 verifyGoogleFormat("Deleted& operator=(const Deleted&)& = default;"); 4823 verifyGoogleFormat("Deleted& operator=(const Deleted&)&& = delete;"); 4824 4825 verifyFormat("string // break\n" 4826 "operator()() & {}"); 4827 verifyFormat("string // break\n" 4828 "operator()() && {}"); 4829 } 4830 4831 TEST_F(FormatTest, UnderstandsNewAndDelete) { 4832 verifyFormat("void f() {\n" 4833 " A *a = new A;\n" 4834 " A *a = new (placement) A;\n" 4835 " delete a;\n" 4836 " delete (A *)a;\n" 4837 "}"); 4838 verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 4839 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 4840 verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4841 " new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 4842 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 4843 } 4844 4845 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) { 4846 verifyFormat("int *f(int *a) {}"); 4847 verifyFormat("int main(int argc, char **argv) {}"); 4848 verifyFormat("Test::Test(int b) : a(b * b) {}"); 4849 verifyIndependentOfContext("f(a, *a);"); 4850 verifyFormat("void g() { f(*a); }"); 4851 verifyIndependentOfContext("int a = b * 10;"); 4852 verifyIndependentOfContext("int a = 10 * b;"); 4853 verifyIndependentOfContext("int a = b * c;"); 4854 verifyIndependentOfContext("int a += b * c;"); 4855 verifyIndependentOfContext("int a -= b * c;"); 4856 verifyIndependentOfContext("int a *= b * c;"); 4857 verifyIndependentOfContext("int a /= b * c;"); 4858 verifyIndependentOfContext("int a = *b;"); 4859 verifyIndependentOfContext("int a = *b * c;"); 4860 verifyIndependentOfContext("int a = b * *c;"); 4861 verifyIndependentOfContext("return 10 * b;"); 4862 verifyIndependentOfContext("return *b * *c;"); 4863 verifyIndependentOfContext("return a & ~b;"); 4864 verifyIndependentOfContext("f(b ? *c : *d);"); 4865 verifyIndependentOfContext("int a = b ? *c : *d;"); 4866 verifyIndependentOfContext("*b = a;"); 4867 verifyIndependentOfContext("a * ~b;"); 4868 verifyIndependentOfContext("a * !b;"); 4869 verifyIndependentOfContext("a * +b;"); 4870 verifyIndependentOfContext("a * -b;"); 4871 verifyIndependentOfContext("a * ++b;"); 4872 verifyIndependentOfContext("a * --b;"); 4873 verifyIndependentOfContext("a[4] * b;"); 4874 verifyIndependentOfContext("a[a * a] = 1;"); 4875 verifyIndependentOfContext("f() * b;"); 4876 verifyIndependentOfContext("a * [self dostuff];"); 4877 verifyIndependentOfContext("int x = a * (a + b);"); 4878 verifyIndependentOfContext("(a *)(a + b);"); 4879 verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;"); 4880 verifyIndependentOfContext("int *pa = (int *)&a;"); 4881 verifyIndependentOfContext("return sizeof(int **);"); 4882 verifyIndependentOfContext("return sizeof(int ******);"); 4883 verifyIndependentOfContext("return (int **&)a;"); 4884 verifyIndependentOfContext("f((*PointerToArray)[10]);"); 4885 verifyFormat("void f(Type (*parameter)[10]) {}"); 4886 verifyGoogleFormat("return sizeof(int**);"); 4887 verifyIndependentOfContext("Type **A = static_cast<Type **>(P);"); 4888 verifyGoogleFormat("Type** A = static_cast<Type**>(P);"); 4889 verifyFormat("auto a = [](int **&, int ***) {};"); 4890 verifyFormat("auto PointerBinding = [](const char *S) {};"); 4891 verifyFormat("typedef typeof(int(int, int)) *MyFunc;"); 4892 verifyFormat("[](const decltype(*a) &value) {}"); 4893 verifyIndependentOfContext("typedef void (*f)(int *a);"); 4894 verifyIndependentOfContext("int i{a * b};"); 4895 verifyIndependentOfContext("aaa && aaa->f();"); 4896 verifyIndependentOfContext("int x = ~*p;"); 4897 4898 verifyIndependentOfContext("InvalidRegions[*R] = 0;"); 4899 4900 verifyIndependentOfContext("A<int *> a;"); 4901 verifyIndependentOfContext("A<int **> a;"); 4902 verifyIndependentOfContext("A<int *, int *> a;"); 4903 verifyIndependentOfContext("A<int *[]> a;"); 4904 verifyIndependentOfContext( 4905 "const char *const p = reinterpret_cast<const char *const>(q);"); 4906 verifyIndependentOfContext("A<int **, int **> a;"); 4907 verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);"); 4908 verifyFormat("for (char **a = b; *a; ++a) {\n}"); 4909 verifyFormat("for (; a && b;) {\n}"); 4910 verifyFormat("bool foo = true && [] { return false; }();"); 4911 4912 verifyFormat( 4913 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4914 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4915 4916 verifyGoogleFormat("int main(int argc, char** argv) {}"); 4917 verifyGoogleFormat("A<int*> a;"); 4918 verifyGoogleFormat("A<int**> a;"); 4919 verifyGoogleFormat("A<int*, int*> a;"); 4920 verifyGoogleFormat("A<int**, int**> a;"); 4921 verifyGoogleFormat("f(b ? *c : *d);"); 4922 verifyGoogleFormat("int a = b ? *c : *d;"); 4923 verifyGoogleFormat("Type* t = **x;"); 4924 verifyGoogleFormat("Type* t = *++*x;"); 4925 verifyGoogleFormat("*++*x;"); 4926 verifyGoogleFormat("Type* t = const_cast<T*>(&*x);"); 4927 verifyGoogleFormat("Type* t = x++ * y;"); 4928 verifyGoogleFormat( 4929 "const char* const p = reinterpret_cast<const char* const>(q);"); 4930 verifyGoogleFormat("void f(int i = 0, SomeType** temps = NULL);"); 4931 4932 FormatStyle Left = getLLVMStyle(); 4933 Left.PointerAlignment = FormatStyle::PAS_Left; 4934 verifyFormat("x = *a(x) = *a(y);", Left); 4935 4936 verifyIndependentOfContext("a = *(x + y);"); 4937 verifyIndependentOfContext("a = &(x + y);"); 4938 verifyIndependentOfContext("*(x + y).call();"); 4939 verifyIndependentOfContext("&(x + y)->call();"); 4940 verifyFormat("void f() { &(*I).first; }"); 4941 4942 verifyIndependentOfContext("f(b * /* confusing comment */ ++c);"); 4943 verifyFormat( 4944 "int *MyValues = {\n" 4945 " *A, // Operator detection might be confused by the '{'\n" 4946 " *BB // Operator detection might be confused by previous comment\n" 4947 "};"); 4948 4949 verifyIndependentOfContext("if (int *a = &b)"); 4950 verifyIndependentOfContext("if (int &a = *b)"); 4951 verifyIndependentOfContext("if (a & b[i])"); 4952 verifyIndependentOfContext("if (a::b::c::d & b[i])"); 4953 verifyIndependentOfContext("if (*b[i])"); 4954 verifyIndependentOfContext("if (int *a = (&b))"); 4955 verifyIndependentOfContext("while (int *a = &b)"); 4956 verifyIndependentOfContext("size = sizeof *a;"); 4957 verifyFormat("void f() {\n" 4958 " for (const int &v : Values) {\n" 4959 " }\n" 4960 "}"); 4961 verifyFormat("for (int i = a * a; i < 10; ++i) {\n}"); 4962 verifyFormat("for (int i = 0; i < a * a; ++i) {\n}"); 4963 verifyGoogleFormat("for (int i = 0; i * 2 < z; i *= 2) {\n}"); 4964 4965 verifyFormat("#define A (!a * b)"); 4966 verifyFormat("#define MACRO \\\n" 4967 " int *i = a * b; \\\n" 4968 " void f(a *b);", 4969 getLLVMStyleWithColumns(19)); 4970 4971 verifyIndependentOfContext("A = new SomeType *[Length];"); 4972 verifyIndependentOfContext("A = new SomeType *[Length]();"); 4973 verifyIndependentOfContext("T **t = new T *;"); 4974 verifyIndependentOfContext("T **t = new T *();"); 4975 verifyGoogleFormat("A = new SomeType* [Length]();"); 4976 verifyGoogleFormat("A = new SomeType* [Length];"); 4977 verifyGoogleFormat("T** t = new T*;"); 4978 verifyGoogleFormat("T** t = new T*();"); 4979 4980 FormatStyle PointerLeft = getLLVMStyle(); 4981 PointerLeft.PointerAlignment = FormatStyle::PAS_Left; 4982 verifyFormat("delete *x;", PointerLeft); 4983 verifyFormat("STATIC_ASSERT((a & b) == 0);"); 4984 verifyFormat("STATIC_ASSERT(0 == (a & b));"); 4985 verifyFormat("template <bool a, bool b> " 4986 "typename t::if<x && y>::type f() {}"); 4987 verifyFormat("template <int *y> f() {}"); 4988 verifyFormat("vector<int *> v;"); 4989 verifyFormat("vector<int *const> v;"); 4990 verifyFormat("vector<int *const **const *> v;"); 4991 verifyFormat("vector<int *volatile> v;"); 4992 verifyFormat("vector<a * b> v;"); 4993 verifyFormat("foo<b && false>();"); 4994 verifyFormat("foo<b & 1>();"); 4995 verifyFormat("decltype(*::std::declval<const T &>()) void F();"); 4996 4997 verifyIndependentOfContext("MACRO(int *i);"); 4998 verifyIndependentOfContext("MACRO(auto *a);"); 4999 verifyIndependentOfContext("MACRO(const A *a);"); 5000 verifyIndependentOfContext("MACRO('0' <= c && c <= '9');"); 5001 // FIXME: Is there a way to make this work? 5002 // verifyIndependentOfContext("MACRO(A *a);"); 5003 5004 verifyFormat("DatumHandle const *operator->() const { return input_; }"); 5005 5006 EXPECT_EQ("#define OP(x) \\\n" 5007 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5008 " return s << a.DebugString(); \\\n" 5009 " }", 5010 format("#define OP(x) \\\n" 5011 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5012 " return s << a.DebugString(); \\\n" 5013 " }", 5014 getLLVMStyleWithColumns(50))); 5015 5016 // FIXME: We cannot handle this case yet; we might be able to figure out that 5017 // foo<x> d > v; doesn't make sense. 5018 verifyFormat("foo<a<b && c> d> v;"); 5019 5020 FormatStyle PointerMiddle = getLLVMStyle(); 5021 PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle; 5022 verifyFormat("delete *x;", PointerMiddle); 5023 verifyFormat("int * x;", PointerMiddle); 5024 verifyFormat("template <int * y> f() {}", PointerMiddle); 5025 verifyFormat("int * f(int * a) {}", PointerMiddle); 5026 verifyFormat("int main(int argc, char ** argv) {}", PointerMiddle); 5027 verifyFormat("Test::Test(int b) : a(b * b) {}", PointerMiddle); 5028 verifyFormat("A<int *> a;", PointerMiddle); 5029 verifyFormat("A<int **> a;", PointerMiddle); 5030 verifyFormat("A<int *, int *> a;", PointerMiddle); 5031 verifyFormat("A<int * []> a;", PointerMiddle); 5032 verifyFormat("A = new SomeType * [Length]();", PointerMiddle); 5033 verifyFormat("A = new SomeType * [Length];", PointerMiddle); 5034 verifyFormat("T ** t = new T *;", PointerMiddle); 5035 } 5036 5037 TEST_F(FormatTest, UnderstandsAttributes) { 5038 verifyFormat("SomeType s __attribute__((unused)) (InitValue);"); 5039 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((unused))\n" 5040 "aaaaaaaaaaaaaaaaaaaaaaa(int i);"); 5041 } 5042 5043 TEST_F(FormatTest, UnderstandsEllipsis) { 5044 verifyFormat("int printf(const char *fmt, ...);"); 5045 verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }"); 5046 verifyFormat("template <class... Ts> void Foo(Ts *... ts) {}"); 5047 5048 FormatStyle PointersLeft = getLLVMStyle(); 5049 PointersLeft.PointerAlignment = FormatStyle::PAS_Left; 5050 verifyFormat("template <class... Ts> void Foo(Ts*... ts) {}", PointersLeft); 5051 } 5052 5053 TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) { 5054 EXPECT_EQ("int *a;\n" 5055 "int *a;\n" 5056 "int *a;", 5057 format("int *a;\n" 5058 "int* a;\n" 5059 "int *a;", 5060 getGoogleStyle())); 5061 EXPECT_EQ("int* a;\n" 5062 "int* a;\n" 5063 "int* a;", 5064 format("int* a;\n" 5065 "int* a;\n" 5066 "int *a;", 5067 getGoogleStyle())); 5068 EXPECT_EQ("int *a;\n" 5069 "int *a;\n" 5070 "int *a;", 5071 format("int *a;\n" 5072 "int * a;\n" 5073 "int * a;", 5074 getGoogleStyle())); 5075 } 5076 5077 TEST_F(FormatTest, UnderstandsRvalueReferences) { 5078 verifyFormat("int f(int &&a) {}"); 5079 verifyFormat("int f(int a, char &&b) {}"); 5080 verifyFormat("void f() { int &&a = b; }"); 5081 verifyGoogleFormat("int f(int a, char&& b) {}"); 5082 verifyGoogleFormat("void f() { int&& a = b; }"); 5083 5084 verifyIndependentOfContext("A<int &&> a;"); 5085 verifyIndependentOfContext("A<int &&, int &&> a;"); 5086 verifyGoogleFormat("A<int&&> a;"); 5087 verifyGoogleFormat("A<int&&, int&&> a;"); 5088 5089 // Not rvalue references: 5090 verifyFormat("template <bool B, bool C> class A {\n" 5091 " static_assert(B && C, \"Something is wrong\");\n" 5092 "};"); 5093 verifyGoogleFormat("#define IF(a, b, c) if (a && (b == c))"); 5094 verifyGoogleFormat("#define WHILE(a, b, c) while (a && (b == c))"); 5095 verifyFormat("#define A(a, b) (a && b)"); 5096 } 5097 5098 TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) { 5099 verifyFormat("void f() {\n" 5100 " x[aaaaaaaaa -\n" 5101 " b] = 23;\n" 5102 "}", 5103 getLLVMStyleWithColumns(15)); 5104 } 5105 5106 TEST_F(FormatTest, FormatsCasts) { 5107 verifyFormat("Type *A = static_cast<Type *>(P);"); 5108 verifyFormat("Type *A = (Type *)P;"); 5109 verifyFormat("Type *A = (vector<Type *, int *>)P;"); 5110 verifyFormat("int a = (int)(2.0f);"); 5111 verifyFormat("int a = (int)2.0f;"); 5112 verifyFormat("x[(int32)y];"); 5113 verifyFormat("x = (int32)y;"); 5114 verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)"); 5115 verifyFormat("int a = (int)*b;"); 5116 verifyFormat("int a = (int)2.0f;"); 5117 verifyFormat("int a = (int)~0;"); 5118 verifyFormat("int a = (int)++a;"); 5119 verifyFormat("int a = (int)sizeof(int);"); 5120 verifyFormat("int a = (int)+2;"); 5121 verifyFormat("my_int a = (my_int)2.0f;"); 5122 verifyFormat("my_int a = (my_int)sizeof(int);"); 5123 verifyFormat("return (my_int)aaa;"); 5124 verifyFormat("#define x ((int)-1)"); 5125 verifyFormat("#define LENGTH(x, y) (x) - (y) + 1"); 5126 verifyFormat("#define p(q) ((int *)&q)"); 5127 verifyFormat("fn(a)(b) + 1;"); 5128 5129 verifyFormat("void f() { my_int a = (my_int)*b; }"); 5130 verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }"); 5131 verifyFormat("my_int a = (my_int)~0;"); 5132 verifyFormat("my_int a = (my_int)++a;"); 5133 verifyFormat("my_int a = (my_int)-2;"); 5134 verifyFormat("my_int a = (my_int)1;"); 5135 verifyFormat("my_int a = (my_int *)1;"); 5136 verifyFormat("my_int a = (const my_int)-1;"); 5137 verifyFormat("my_int a = (const my_int *)-1;"); 5138 verifyFormat("my_int a = (my_int)(my_int)-1;"); 5139 5140 // FIXME: single value wrapped with paren will be treated as cast. 5141 verifyFormat("void f(int i = (kValue)*kMask) {}"); 5142 5143 verifyFormat("{ (void)F; }"); 5144 5145 // Don't break after a cast's 5146 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5147 " (aaaaaaaaaaaaaaaaaaaaaaaaaa *)(aaaaaaaaaaaaaaaaaaaaaa +\n" 5148 " bbbbbbbbbbbbbbbbbbbbbb);"); 5149 5150 // These are not casts. 5151 verifyFormat("void f(int *) {}"); 5152 verifyFormat("f(foo)->b;"); 5153 verifyFormat("f(foo).b;"); 5154 verifyFormat("f(foo)(b);"); 5155 verifyFormat("f(foo)[b];"); 5156 verifyFormat("[](foo) { return 4; }(bar);"); 5157 verifyFormat("(*funptr)(foo)[4];"); 5158 verifyFormat("funptrs[4](foo)[4];"); 5159 verifyFormat("void f(int *);"); 5160 verifyFormat("void f(int *) = 0;"); 5161 verifyFormat("void f(SmallVector<int>) {}"); 5162 verifyFormat("void f(SmallVector<int>);"); 5163 verifyFormat("void f(SmallVector<int>) = 0;"); 5164 verifyFormat("void f(int i = (kA * kB) & kMask) {}"); 5165 verifyFormat("int a = sizeof(int) * b;"); 5166 verifyFormat("int a = alignof(int) * b;", getGoogleStyle()); 5167 verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;"); 5168 verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");"); 5169 verifyFormat("aaaaa &operator=(const aaaaa &) LLVM_DELETED_FUNCTION;"); 5170 5171 // These are not casts, but at some point were confused with casts. 5172 verifyFormat("virtual void foo(int *) override;"); 5173 verifyFormat("virtual void foo(char &) const;"); 5174 verifyFormat("virtual void foo(int *a, char *) const;"); 5175 verifyFormat("int a = sizeof(int *) + b;"); 5176 verifyFormat("int a = alignof(int *) + b;", getGoogleStyle()); 5177 5178 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n" 5179 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 5180 // FIXME: The indentation here is not ideal. 5181 verifyFormat( 5182 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5183 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)\n" 5184 " [dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];"); 5185 } 5186 5187 TEST_F(FormatTest, FormatsFunctionTypes) { 5188 verifyFormat("A<bool()> a;"); 5189 verifyFormat("A<SomeType()> a;"); 5190 verifyFormat("A<void (*)(int, std::string)> a;"); 5191 verifyFormat("A<void *(int)>;"); 5192 verifyFormat("void *(*a)(int *, SomeType *);"); 5193 verifyFormat("int (*func)(void *);"); 5194 verifyFormat("void f() { int (*func)(void *); }"); 5195 verifyFormat("template <class CallbackClass>\n" 5196 "using MyCallback = void (CallbackClass::*)(SomeObject *Data);"); 5197 5198 verifyGoogleFormat("A<void*(int*, SomeType*)>;"); 5199 verifyGoogleFormat("void* (*a)(int);"); 5200 verifyGoogleFormat( 5201 "template <class CallbackClass>\n" 5202 "using MyCallback = void (CallbackClass::*)(SomeObject* Data);"); 5203 5204 // Other constructs can look somewhat like function types: 5205 verifyFormat("A<sizeof(*x)> a;"); 5206 verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)"); 5207 verifyFormat("some_var = function(*some_pointer_var)[0];"); 5208 verifyFormat("void f() { function(*some_pointer_var)[0] = 10; }"); 5209 } 5210 5211 TEST_F(FormatTest, BreaksLongVariableDeclarations) { 5212 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5213 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 5214 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType const\n" 5215 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 5216 5217 // Different ways of ()-initializiation. 5218 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5219 " LoooooooooooooooooooooooooooooooooooooooongVariable(1);"); 5220 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5221 " LoooooooooooooooooooooooooooooooooooooooongVariable(a);"); 5222 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5223 " LoooooooooooooooooooooooooooooooooooooooongVariable({});"); 5224 } 5225 5226 TEST_F(FormatTest, BreaksLongDeclarations) { 5227 verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n" 5228 " AnotherNameForTheLongType;"); 5229 verifyFormat("typedef LongTemplateType<aaaaaaaaaaaaaaaaaaa()>\n" 5230 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5231 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5232 "LoooooooooooooooooooooooooooooooongFunctionDeclaration();"); 5233 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5234 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5235 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 5236 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5237 verifyFormat("decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 5238 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5239 FormatStyle Indented = getLLVMStyle(); 5240 Indented.IndentWrappedFunctionNames = true; 5241 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5242 " LoooooooooooooooooooooooooooooooongFunctionDeclaration();", 5243 Indented); 5244 verifyFormat( 5245 "LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5246 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5247 Indented); 5248 verifyFormat( 5249 "LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 5250 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5251 Indented); 5252 verifyFormat( 5253 "decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 5254 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5255 Indented); 5256 5257 // FIXME: Without the comment, this breaks after "(". 5258 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType // break\n" 5259 " (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();", 5260 getGoogleStyle()); 5261 5262 verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n" 5263 " int LoooooooooooooooooooongParam2) {}"); 5264 verifyFormat( 5265 "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n" 5266 " SourceLocation L, IdentifierIn *II,\n" 5267 " Type *T) {}"); 5268 verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n" 5269 "ReallyReallyLongFunctionName(\n" 5270 " const std::string &SomeParameter,\n" 5271 " const SomeType<string, SomeOtherTemplateParameter> &\n" 5272 " ReallyReallyLongParameterName,\n" 5273 " const SomeType<string, SomeOtherTemplateParameter> &\n" 5274 " AnotherLongParameterName) {}"); 5275 verifyFormat("template <typename A>\n" 5276 "SomeLoooooooooooooooooooooongType<\n" 5277 " typename some_namespace::SomeOtherType<A>::Type>\n" 5278 "Function() {}"); 5279 5280 verifyGoogleFormat( 5281 "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n" 5282 " aaaaaaaaaaaaaaaaaaaaaaa;"); 5283 verifyGoogleFormat( 5284 "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n" 5285 " SourceLocation L) {}"); 5286 verifyGoogleFormat( 5287 "some_namespace::LongReturnType\n" 5288 "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n" 5289 " int first_long_parameter, int second_parameter) {}"); 5290 5291 verifyGoogleFormat("template <typename T>\n" 5292 "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n" 5293 "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}"); 5294 verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5295 " int aaaaaaaaaaaaaaaaaaaaaaa);"); 5296 5297 verifyFormat("typedef size_t (*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 5298 " const aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 5299 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5300 } 5301 5302 TEST_F(FormatTest, FormatsArrays) { 5303 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5304 " [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;"); 5305 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5306 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 5307 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5308 " [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;"); 5309 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5310 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5311 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 5312 verifyFormat( 5313 "llvm::outs() << \"aaaaaaaaaaaa: \"\n" 5314 " << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5315 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];"); 5316 5317 verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n" 5318 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];"); 5319 verifyFormat( 5320 "aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n" 5321 " .aaaaaaa[0]\n" 5322 " .aaaaaaaaaaaaaaaaaaaaaa();"); 5323 } 5324 5325 TEST_F(FormatTest, LineStartsWithSpecialCharacter) { 5326 verifyFormat("(a)->b();"); 5327 verifyFormat("--a;"); 5328 } 5329 5330 TEST_F(FormatTest, HandlesIncludeDirectives) { 5331 verifyFormat("#include <string>\n" 5332 "#include <a/b/c.h>\n" 5333 "#include \"a/b/string\"\n" 5334 "#include \"string.h\"\n" 5335 "#include \"string.h\"\n" 5336 "#include <a-a>\n" 5337 "#include < path with space >\n" 5338 "#include \"abc.h\" // this is included for ABC\n" 5339 "#include \"some long include\" // with a comment\n" 5340 "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"", 5341 getLLVMStyleWithColumns(35)); 5342 EXPECT_EQ("#include \"a.h\"", format("#include \"a.h\"")); 5343 EXPECT_EQ("#include <a>", format("#include<a>")); 5344 5345 verifyFormat("#import <string>"); 5346 verifyFormat("#import <a/b/c.h>"); 5347 verifyFormat("#import \"a/b/string\""); 5348 verifyFormat("#import \"string.h\""); 5349 verifyFormat("#import \"string.h\""); 5350 verifyFormat("#if __has_include(<strstream>)\n" 5351 "#include <strstream>\n" 5352 "#endif"); 5353 5354 verifyFormat("#define MY_IMPORT <a/b>"); 5355 5356 // Protocol buffer definition or missing "#". 5357 verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";", 5358 getLLVMStyleWithColumns(30)); 5359 5360 FormatStyle Style = getLLVMStyle(); 5361 Style.AlwaysBreakBeforeMultilineStrings = true; 5362 Style.ColumnLimit = 0; 5363 verifyFormat("#import \"abc.h\"", Style); 5364 } 5365 5366 //===----------------------------------------------------------------------===// 5367 // Error recovery tests. 5368 //===----------------------------------------------------------------------===// 5369 5370 TEST_F(FormatTest, IncompleteParameterLists) { 5371 FormatStyle NoBinPacking = getLLVMStyle(); 5372 NoBinPacking.BinPackParameters = false; 5373 verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n" 5374 " double *min_x,\n" 5375 " double *max_x,\n" 5376 " double *min_y,\n" 5377 " double *max_y,\n" 5378 " double *min_z,\n" 5379 " double *max_z, ) {}", 5380 NoBinPacking); 5381 } 5382 5383 TEST_F(FormatTest, IncorrectCodeTrailingStuff) { 5384 verifyFormat("void f() { return; }\n42"); 5385 verifyFormat("void f() {\n" 5386 " if (0)\n" 5387 " return;\n" 5388 "}\n" 5389 "42"); 5390 verifyFormat("void f() { return }\n42"); 5391 verifyFormat("void f() {\n" 5392 " if (0)\n" 5393 " return\n" 5394 "}\n" 5395 "42"); 5396 } 5397 5398 TEST_F(FormatTest, IncorrectCodeMissingSemicolon) { 5399 EXPECT_EQ("void f() { return }", format("void f ( ) { return }")); 5400 EXPECT_EQ("void f() {\n" 5401 " if (a)\n" 5402 " return\n" 5403 "}", 5404 format("void f ( ) { if ( a ) return }")); 5405 EXPECT_EQ("namespace N {\n" 5406 "void f()\n" 5407 "}", 5408 format("namespace N { void f() }")); 5409 EXPECT_EQ("namespace N {\n" 5410 "void f() {}\n" 5411 "void g()\n" 5412 "}", 5413 format("namespace N { void f( ) { } void g( ) }")); 5414 } 5415 5416 TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) { 5417 verifyFormat("int aaaaaaaa =\n" 5418 " // Overlylongcomment\n" 5419 " b;", 5420 getLLVMStyleWithColumns(20)); 5421 verifyFormat("function(\n" 5422 " ShortArgument,\n" 5423 " LoooooooooooongArgument);\n", 5424 getLLVMStyleWithColumns(20)); 5425 } 5426 5427 TEST_F(FormatTest, IncorrectAccessSpecifier) { 5428 verifyFormat("public:"); 5429 verifyFormat("class A {\n" 5430 "public\n" 5431 " void f() {}\n" 5432 "};"); 5433 verifyFormat("public\n" 5434 "int qwerty;"); 5435 verifyFormat("public\n" 5436 "B {}"); 5437 verifyFormat("public\n" 5438 "{}"); 5439 verifyFormat("public\n" 5440 "B { int x; }"); 5441 } 5442 5443 TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) { 5444 verifyFormat("{"); 5445 verifyFormat("#})"); 5446 } 5447 5448 TEST_F(FormatTest, IncorrectCodeDoNoWhile) { 5449 verifyFormat("do {\n}"); 5450 verifyFormat("do {\n}\n" 5451 "f();"); 5452 verifyFormat("do {\n}\n" 5453 "wheeee(fun);"); 5454 verifyFormat("do {\n" 5455 " f();\n" 5456 "}"); 5457 } 5458 5459 TEST_F(FormatTest, IncorrectCodeMissingParens) { 5460 verifyFormat("if {\n foo;\n foo();\n}"); 5461 verifyFormat("switch {\n foo;\n foo();\n}"); 5462 verifyFormat("for {\n foo;\n foo();\n}"); 5463 verifyFormat("while {\n foo;\n foo();\n}"); 5464 verifyFormat("do {\n foo;\n foo();\n} while;"); 5465 } 5466 5467 TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) { 5468 verifyFormat("namespace {\n" 5469 "class Foo { Foo (\n" 5470 "};\n" 5471 "} // comment"); 5472 } 5473 5474 TEST_F(FormatTest, IncorrectCodeErrorDetection) { 5475 EXPECT_EQ("{\n {}\n", format("{\n{\n}\n")); 5476 EXPECT_EQ("{\n {}\n", format("{\n {\n}\n")); 5477 EXPECT_EQ("{\n {}\n", format("{\n {\n }\n")); 5478 EXPECT_EQ("{\n {}\n}\n}\n", format("{\n {\n }\n }\n}\n")); 5479 5480 EXPECT_EQ("{\n" 5481 " {\n" 5482 " breakme(\n" 5483 " qwe);\n" 5484 " }\n", 5485 format("{\n" 5486 " {\n" 5487 " breakme(qwe);\n" 5488 "}\n", 5489 getLLVMStyleWithColumns(10))); 5490 } 5491 5492 TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) { 5493 verifyFormat("int x = {\n" 5494 " avariable,\n" 5495 " b(alongervariable)};", 5496 getLLVMStyleWithColumns(25)); 5497 } 5498 5499 TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) { 5500 verifyFormat("return (a)(b){1, 2, 3};"); 5501 } 5502 5503 TEST_F(FormatTest, LayoutCxx11BraceInitializers) { 5504 verifyFormat("vector<int> x{1, 2, 3, 4};"); 5505 verifyFormat("vector<int> x{\n" 5506 " 1, 2, 3, 4,\n" 5507 "};"); 5508 verifyFormat("vector<T> x{{}, {}, {}, {}};"); 5509 verifyFormat("f({1, 2});"); 5510 verifyFormat("auto v = Foo{-1};"); 5511 verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});"); 5512 verifyFormat("Class::Class : member{1, 2, 3} {}"); 5513 verifyFormat("new vector<int>{1, 2, 3};"); 5514 verifyFormat("new int[3]{1, 2, 3};"); 5515 verifyFormat("new int{1};"); 5516 verifyFormat("return {arg1, arg2};"); 5517 verifyFormat("return {arg1, SomeType{parameter}};"); 5518 verifyFormat("int count = set<int>{f(), g(), h()}.size();"); 5519 verifyFormat("new T{arg1, arg2};"); 5520 verifyFormat("f(MyMap[{composite, key}]);"); 5521 verifyFormat("class Class {\n" 5522 " T member = {arg1, arg2};\n" 5523 "};"); 5524 verifyFormat("vector<int> foo = {::SomeGlobalFunction()};"); 5525 verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");"); 5526 verifyFormat("int a = std::is_integral<int>{} + 0;"); 5527 5528 verifyFormat("int foo(int i) { return fo1{}(i); }"); 5529 verifyFormat("int foo(int i) { return fo1{}(i); }"); 5530 verifyFormat("auto i = decltype(x){};"); 5531 verifyFormat("std::vector<int> v = {1, 0 /* comment */};"); 5532 verifyFormat("Node n{1, Node{1000}, //\n" 5533 " 2};"); 5534 5535 // In combination with BinPackParameters = false. 5536 FormatStyle NoBinPacking = getLLVMStyle(); 5537 NoBinPacking.BinPackParameters = false; 5538 verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n" 5539 " bbbbb,\n" 5540 " ccccc,\n" 5541 " ddddd,\n" 5542 " eeeee,\n" 5543 " ffffff,\n" 5544 " ggggg,\n" 5545 " hhhhhh,\n" 5546 " iiiiii,\n" 5547 " jjjjjj,\n" 5548 " kkkkkk};", 5549 NoBinPacking); 5550 verifyFormat("const Aaaaaa aaaaa = {\n" 5551 " aaaaa,\n" 5552 " bbbbb,\n" 5553 " ccccc,\n" 5554 " ddddd,\n" 5555 " eeeee,\n" 5556 " ffffff,\n" 5557 " ggggg,\n" 5558 " hhhhhh,\n" 5559 " iiiiii,\n" 5560 " jjjjjj,\n" 5561 " kkkkkk,\n" 5562 "};", 5563 NoBinPacking); 5564 verifyFormat( 5565 "const Aaaaaa aaaaa = {\n" 5566 " aaaaa, bbbbb, ccccc, ddddd, eeeee, ffffff, ggggg, hhhhhh,\n" 5567 " iiiiii, jjjjjj, kkkkkk, aaaaa, bbbbb, ccccc, ddddd, eeeee,\n" 5568 " ffffff, ggggg, hhhhhh, iiiiii, jjjjjj, kkkkkk,\n" 5569 "};", 5570 NoBinPacking); 5571 5572 // FIXME: The alignment of these trailing comments might be bad. Then again, 5573 // this might be utterly useless in real code. 5574 verifyFormat("Constructor::Constructor()\n" 5575 " : some_value{ //\n" 5576 " aaaaaaa //\n" 5577 " } {}"); 5578 5579 // In braced lists, the first comment is always assumed to belong to the 5580 // first element. Thus, it can be moved to the next or previous line as 5581 // appropriate. 5582 EXPECT_EQ("function({// First element:\n" 5583 " 1,\n" 5584 " // Second element:\n" 5585 " 2});", 5586 format("function({\n" 5587 " // First element:\n" 5588 " 1,\n" 5589 " // Second element:\n" 5590 " 2});")); 5591 EXPECT_EQ("std::vector<int> MyNumbers{\n" 5592 " // First element:\n" 5593 " 1,\n" 5594 " // Second element:\n" 5595 " 2};", 5596 format("std::vector<int> MyNumbers{// First element:\n" 5597 " 1,\n" 5598 " // Second element:\n" 5599 " 2};", 5600 getLLVMStyleWithColumns(30))); 5601 5602 FormatStyle ExtraSpaces = getLLVMStyle(); 5603 ExtraSpaces.Cpp11BracedListStyle = false; 5604 ExtraSpaces.ColumnLimit = 75; 5605 verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces); 5606 verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces); 5607 verifyFormat("f({ 1, 2 });", ExtraSpaces); 5608 verifyFormat("auto v = Foo{ 1 };", ExtraSpaces); 5609 verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces); 5610 verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces); 5611 verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces); 5612 verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces); 5613 verifyFormat("return { arg1, arg2 };", ExtraSpaces); 5614 verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces); 5615 verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces); 5616 verifyFormat("new T{ arg1, arg2 };", ExtraSpaces); 5617 verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces); 5618 verifyFormat("class Class {\n" 5619 " T member = { arg1, arg2 };\n" 5620 "};", 5621 ExtraSpaces); 5622 verifyFormat( 5623 "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5624 " aaaaaaaaaaaaaaaaaaaa, aaaaa }\n" 5625 " : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 5626 " bbbbbbbbbbbbbbbbbbbb, bbbbb };", 5627 ExtraSpaces); 5628 verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces); 5629 verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });", 5630 ExtraSpaces); 5631 verifyFormat( 5632 "someFunction(OtherParam,\n" 5633 " BracedList{ // comment 1 (Forcing interesting break)\n" 5634 " param1, param2,\n" 5635 " // comment 2\n" 5636 " param3, param4\n" 5637 " });", 5638 ExtraSpaces); 5639 verifyFormat( 5640 "std::this_thread::sleep_for(\n" 5641 " std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);", 5642 ExtraSpaces); 5643 verifyFormat( 5644 "std::vector<MyValues> aaaaaaaaaaaaaaaaaaa{\n" 5645 " aaaaaaa, aaaaaaaaaa, aaaaa, aaaaaaaaaaaaaaa, aaa, aaaaaaaaaa, a,\n" 5646 " aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaa,\n" 5647 " aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa, aaaaaaa, a};"); 5648 verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces); 5649 } 5650 5651 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) { 5652 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5653 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5654 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5655 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5656 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5657 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 5658 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5659 " // line comment\n" 5660 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5661 " 1, 22, 333, 4444, 55555,\n" 5662 " // line comment\n" 5663 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5664 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 5665 verifyFormat( 5666 "vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5667 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 5668 " 1, 22, 333, 4444, 55555, 666666, // comment\n" 5669 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 5670 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 5671 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 5672 " 7777777};"); 5673 verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n" 5674 " X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n" 5675 " X86::R8, X86::R9, X86::R10, X86::R11, 0};"); 5676 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 5677 " 1, 1, 1, 1};", 5678 getLLVMStyleWithColumns(39)); 5679 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 5680 " 1, 1, 1, 1};", 5681 getLLVMStyleWithColumns(38)); 5682 verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n" 5683 " 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};", 5684 getLLVMStyleWithColumns(43)); 5685 5686 // Trailing commas. 5687 verifyFormat("vector<int> x = {\n" 5688 " 1, 1, 1, 1, 1, 1, 1, 1,\n" 5689 "};", 5690 getLLVMStyleWithColumns(39)); 5691 verifyFormat("vector<int> x = {\n" 5692 " 1, 1, 1, 1, 1, 1, 1, 1, //\n" 5693 "};", 5694 getLLVMStyleWithColumns(39)); 5695 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 5696 " 1, 1, 1, 1,\n" 5697 " /**/ /**/};", 5698 getLLVMStyleWithColumns(39)); 5699 verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n" 5700 " {aaaaaaaaaaaaaaaaaaa},\n" 5701 " {aaaaaaaaaaaaaaaaaaaaa},\n" 5702 " {aaaaaaaaaaaaaaaaa}};", 5703 getLLVMStyleWithColumns(60)); 5704 5705 // With nested lists, we should either format one item per line or all nested 5706 // lists one one line. 5707 // FIXME: For some nested lists, we can do better. 5708 verifyFormat( 5709 "SomeStruct my_struct_array = {\n" 5710 " {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n" 5711 " aaaaaaaaaaaaa, aaaaaaa, aaa},\n" 5712 " {aaa, aaa},\n" 5713 " {aaa, aaa},\n" 5714 " {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n" 5715 " {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n" 5716 " aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};"); 5717 5718 // No column layout should be used here. 5719 verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n" 5720 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};"); 5721 } 5722 5723 TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) { 5724 FormatStyle DoNotMerge = getLLVMStyle(); 5725 DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 5726 5727 verifyFormat("void f() { return 42; }"); 5728 verifyFormat("void f() {\n" 5729 " return 42;\n" 5730 "}", 5731 DoNotMerge); 5732 verifyFormat("void f() {\n" 5733 " // Comment\n" 5734 "}"); 5735 verifyFormat("{\n" 5736 "#error {\n" 5737 " int a;\n" 5738 "}"); 5739 verifyFormat("{\n" 5740 " int a;\n" 5741 "#error {\n" 5742 "}"); 5743 verifyFormat("void f() {} // comment"); 5744 verifyFormat("void f() { int a; } // comment"); 5745 verifyFormat("void f() {\n" 5746 "} // comment", 5747 DoNotMerge); 5748 verifyFormat("void f() {\n" 5749 " int a;\n" 5750 "} // comment", 5751 DoNotMerge); 5752 verifyFormat("void f() {\n" 5753 "} // comment", 5754 getLLVMStyleWithColumns(15)); 5755 5756 verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23)); 5757 verifyFormat("void f() {\n return 42;\n}", getLLVMStyleWithColumns(22)); 5758 5759 verifyFormat("void f() {}", getLLVMStyleWithColumns(11)); 5760 verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10)); 5761 verifyFormat("class C {\n" 5762 " C()\n" 5763 " : iiiiiiii(nullptr),\n" 5764 " kkkkkkk(nullptr),\n" 5765 " mmmmmmm(nullptr),\n" 5766 " nnnnnnn(nullptr) {}\n" 5767 "};", 5768 getGoogleStyle()); 5769 5770 FormatStyle NoColumnLimit = getLLVMStyle(); 5771 NoColumnLimit.ColumnLimit = 0; 5772 EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit)); 5773 EXPECT_EQ("class C {\n" 5774 " A() : b(0) {}\n" 5775 "};", format("class C{A():b(0){}};", NoColumnLimit)); 5776 EXPECT_EQ("A()\n" 5777 " : b(0) {\n" 5778 "}", 5779 format("A()\n:b(0)\n{\n}", NoColumnLimit)); 5780 5781 FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit; 5782 DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine = 5783 FormatStyle::SFS_None; 5784 EXPECT_EQ("A()\n" 5785 " : b(0) {\n" 5786 "}", 5787 format("A():b(0){}", DoNotMergeNoColumnLimit)); 5788 EXPECT_EQ("A()\n" 5789 " : b(0) {\n" 5790 "}", 5791 format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit)); 5792 5793 verifyFormat("#define A \\\n" 5794 " void f() { \\\n" 5795 " int i; \\\n" 5796 " }", 5797 getLLVMStyleWithColumns(20)); 5798 verifyFormat("#define A \\\n" 5799 " void f() { int i; }", 5800 getLLVMStyleWithColumns(21)); 5801 verifyFormat("#define A \\\n" 5802 " void f() { \\\n" 5803 " int i; \\\n" 5804 " } \\\n" 5805 " int j;", 5806 getLLVMStyleWithColumns(22)); 5807 verifyFormat("#define A \\\n" 5808 " void f() { int i; } \\\n" 5809 " int j;", 5810 getLLVMStyleWithColumns(23)); 5811 } 5812 5813 TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) { 5814 FormatStyle MergeInlineOnly = getLLVMStyle(); 5815 MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 5816 verifyFormat("class C {\n" 5817 " int f() { return 42; }\n" 5818 "};", 5819 MergeInlineOnly); 5820 verifyFormat("int f() {\n" 5821 " return 42;\n" 5822 "}", 5823 MergeInlineOnly); 5824 } 5825 5826 TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) { 5827 // Elaborate type variable declarations. 5828 verifyFormat("struct foo a = {bar};\nint n;"); 5829 verifyFormat("class foo a = {bar};\nint n;"); 5830 verifyFormat("union foo a = {bar};\nint n;"); 5831 5832 // Elaborate types inside function definitions. 5833 verifyFormat("struct foo f() {}\nint n;"); 5834 verifyFormat("class foo f() {}\nint n;"); 5835 verifyFormat("union foo f() {}\nint n;"); 5836 5837 // Templates. 5838 verifyFormat("template <class X> void f() {}\nint n;"); 5839 verifyFormat("template <struct X> void f() {}\nint n;"); 5840 verifyFormat("template <union X> void f() {}\nint n;"); 5841 5842 // Actual definitions... 5843 verifyFormat("struct {\n} n;"); 5844 verifyFormat( 5845 "template <template <class T, class Y>, class Z> class X {\n} n;"); 5846 verifyFormat("union Z {\n int n;\n} x;"); 5847 verifyFormat("class MACRO Z {\n} n;"); 5848 verifyFormat("class MACRO(X) Z {\n} n;"); 5849 verifyFormat("class __attribute__(X) Z {\n} n;"); 5850 verifyFormat("class __declspec(X) Z {\n} n;"); 5851 verifyFormat("class A##B##C {\n} n;"); 5852 verifyFormat("class alignas(16) Z {\n} n;"); 5853 5854 // Redefinition from nested context: 5855 verifyFormat("class A::B::C {\n} n;"); 5856 5857 // Template definitions. 5858 verifyFormat( 5859 "template <typename F>\n" 5860 "Matcher(const Matcher<F> &Other,\n" 5861 " typename enable_if_c<is_base_of<F, T>::value &&\n" 5862 " !is_same<F, T>::value>::type * = 0)\n" 5863 " : Implementation(new ImplicitCastMatcher<F>(Other)) {}"); 5864 5865 // FIXME: This is still incorrectly handled at the formatter side. 5866 verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};"); 5867 5868 // FIXME: 5869 // This now gets parsed incorrectly as class definition. 5870 // verifyFormat("class A<int> f() {\n}\nint n;"); 5871 5872 // Elaborate types where incorrectly parsing the structural element would 5873 // break the indent. 5874 verifyFormat("if (true)\n" 5875 " class X x;\n" 5876 "else\n" 5877 " f();\n"); 5878 5879 // This is simply incomplete. Formatting is not important, but must not crash. 5880 verifyFormat("class A:"); 5881 } 5882 5883 TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) { 5884 EXPECT_EQ("#error Leave all white!!!!! space* alone!\n", 5885 format("#error Leave all white!!!!! space* alone!\n")); 5886 EXPECT_EQ( 5887 "#warning Leave all white!!!!! space* alone!\n", 5888 format("#warning Leave all white!!!!! space* alone!\n")); 5889 EXPECT_EQ("#error 1", format(" # error 1")); 5890 EXPECT_EQ("#warning 1", format(" # warning 1")); 5891 } 5892 5893 TEST_F(FormatTest, FormatHashIfExpressions) { 5894 verifyFormat("#if AAAA && BBBB"); 5895 // FIXME: Come up with a better indentation for #elif. 5896 verifyFormat( 5897 "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) && \\\n" 5898 " defined(BBBBBBBB)\n" 5899 "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) && \\\n" 5900 " defined(BBBBBBBB)\n" 5901 "#endif", 5902 getLLVMStyleWithColumns(65)); 5903 } 5904 5905 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) { 5906 FormatStyle AllowsMergedIf = getGoogleStyle(); 5907 AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; 5908 verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf); 5909 verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf); 5910 verifyFormat("if (true)\n#error E\n return 42;", AllowsMergedIf); 5911 EXPECT_EQ("if (true) return 42;", 5912 format("if (true)\nreturn 42;", AllowsMergedIf)); 5913 FormatStyle ShortMergedIf = AllowsMergedIf; 5914 ShortMergedIf.ColumnLimit = 25; 5915 verifyFormat("#define A \\\n" 5916 " if (true) return 42;", 5917 ShortMergedIf); 5918 verifyFormat("#define A \\\n" 5919 " f(); \\\n" 5920 " if (true)\n" 5921 "#define B", 5922 ShortMergedIf); 5923 verifyFormat("#define A \\\n" 5924 " f(); \\\n" 5925 " if (true)\n" 5926 "g();", 5927 ShortMergedIf); 5928 verifyFormat("{\n" 5929 "#ifdef A\n" 5930 " // Comment\n" 5931 " if (true) continue;\n" 5932 "#endif\n" 5933 " // Comment\n" 5934 " if (true) continue;\n" 5935 "}", 5936 ShortMergedIf); 5937 ShortMergedIf.ColumnLimit = 29; 5938 verifyFormat("#define A \\\n" 5939 " if (aaaaaaaaaa) return 1; \\\n" 5940 " return 2;", 5941 ShortMergedIf); 5942 ShortMergedIf.ColumnLimit = 28; 5943 verifyFormat("#define A \\\n" 5944 " if (aaaaaaaaaa) \\\n" 5945 " return 1; \\\n" 5946 " return 2;", 5947 ShortMergedIf); 5948 } 5949 5950 TEST_F(FormatTest, BlockCommentsInControlLoops) { 5951 verifyFormat("if (0) /* a comment in a strange place */ {\n" 5952 " f();\n" 5953 "}"); 5954 verifyFormat("if (0) /* a comment in a strange place */ {\n" 5955 " f();\n" 5956 "} /* another comment */ else /* comment #3 */ {\n" 5957 " g();\n" 5958 "}"); 5959 verifyFormat("while (0) /* a comment in a strange place */ {\n" 5960 " f();\n" 5961 "}"); 5962 verifyFormat("for (;;) /* a comment in a strange place */ {\n" 5963 " f();\n" 5964 "}"); 5965 verifyFormat("do /* a comment in a strange place */ {\n" 5966 " f();\n" 5967 "} /* another comment */ while (0);"); 5968 } 5969 5970 TEST_F(FormatTest, BlockComments) { 5971 EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */", 5972 format("/* *//* */ /* */\n/* *//* */ /* */")); 5973 EXPECT_EQ("/* */ a /* */ b;", format(" /* */ a/* */ b;")); 5974 EXPECT_EQ("#define A /*123*/ \\\n" 5975 " b\n" 5976 "/* */\n" 5977 "someCall(\n" 5978 " parameter);", 5979 format("#define A /*123*/ b\n" 5980 "/* */\n" 5981 "someCall(parameter);", 5982 getLLVMStyleWithColumns(15))); 5983 5984 EXPECT_EQ("#define A\n" 5985 "/* */ someCall(\n" 5986 " parameter);", 5987 format("#define A\n" 5988 "/* */someCall(parameter);", 5989 getLLVMStyleWithColumns(15))); 5990 EXPECT_EQ("/*\n**\n*/", format("/*\n**\n*/")); 5991 EXPECT_EQ("/*\n" 5992 "*\n" 5993 " * aaaaaa\n" 5994 "*aaaaaa\n" 5995 "*/", 5996 format("/*\n" 5997 "*\n" 5998 " * aaaaaa aaaaaa\n" 5999 "*/", 6000 getLLVMStyleWithColumns(10))); 6001 EXPECT_EQ("/*\n" 6002 "**\n" 6003 "* aaaaaa\n" 6004 "*aaaaaa\n" 6005 "*/", 6006 format("/*\n" 6007 "**\n" 6008 "* aaaaaa aaaaaa\n" 6009 "*/", 6010 getLLVMStyleWithColumns(10))); 6011 6012 FormatStyle NoBinPacking = getLLVMStyle(); 6013 NoBinPacking.BinPackParameters = false; 6014 EXPECT_EQ("someFunction(1, /* comment 1 */\n" 6015 " 2, /* comment 2 */\n" 6016 " 3, /* comment 3 */\n" 6017 " aaaa,\n" 6018 " bbbb);", 6019 format("someFunction (1, /* comment 1 */\n" 6020 " 2, /* comment 2 */ \n" 6021 " 3, /* comment 3 */\n" 6022 "aaaa, bbbb );", 6023 NoBinPacking)); 6024 verifyFormat( 6025 "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6026 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 6027 EXPECT_EQ( 6028 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 6029 " aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6030 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;", 6031 format( 6032 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 6033 " aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6034 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;")); 6035 EXPECT_EQ( 6036 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 6037 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 6038 "int cccccccccccccccccccccccccccccc; /* comment */\n", 6039 format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 6040 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 6041 "int cccccccccccccccccccccccccccccc; /* comment */\n")); 6042 6043 verifyFormat("void f(int * /* unused */) {}"); 6044 6045 EXPECT_EQ("/*\n" 6046 " **\n" 6047 " */", 6048 format("/*\n" 6049 " **\n" 6050 " */")); 6051 EXPECT_EQ("/*\n" 6052 " *q\n" 6053 " */", 6054 format("/*\n" 6055 " *q\n" 6056 " */")); 6057 EXPECT_EQ("/*\n" 6058 " * q\n" 6059 " */", 6060 format("/*\n" 6061 " * q\n" 6062 " */")); 6063 EXPECT_EQ("/*\n" 6064 " **/", 6065 format("/*\n" 6066 " **/")); 6067 EXPECT_EQ("/*\n" 6068 " ***/", 6069 format("/*\n" 6070 " ***/")); 6071 } 6072 6073 TEST_F(FormatTest, BlockCommentsInMacros) { 6074 EXPECT_EQ("#define A \\\n" 6075 " { \\\n" 6076 " /* one line */ \\\n" 6077 " someCall();", 6078 format("#define A { \\\n" 6079 " /* one line */ \\\n" 6080 " someCall();", 6081 getLLVMStyleWithColumns(20))); 6082 EXPECT_EQ("#define A \\\n" 6083 " { \\\n" 6084 " /* previous */ \\\n" 6085 " /* one line */ \\\n" 6086 " someCall();", 6087 format("#define A { \\\n" 6088 " /* previous */ \\\n" 6089 " /* one line */ \\\n" 6090 " someCall();", 6091 getLLVMStyleWithColumns(20))); 6092 } 6093 6094 TEST_F(FormatTest, BlockCommentsAtEndOfLine) { 6095 EXPECT_EQ("a = {\n" 6096 " 1111 /* */\n" 6097 "};", 6098 format("a = {1111 /* */\n" 6099 "};", 6100 getLLVMStyleWithColumns(15))); 6101 EXPECT_EQ("a = {\n" 6102 " 1111 /* */\n" 6103 "};", 6104 format("a = {1111 /* */\n" 6105 "};", 6106 getLLVMStyleWithColumns(15))); 6107 6108 // FIXME: The formatting is still wrong here. 6109 EXPECT_EQ("a = {\n" 6110 " 1111 /* a\n" 6111 " */\n" 6112 "};", 6113 format("a = {1111 /* a */\n" 6114 "};", 6115 getLLVMStyleWithColumns(15))); 6116 } 6117 6118 TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) { 6119 // FIXME: This is not what we want... 6120 verifyFormat("{\n" 6121 "// a" 6122 "// b"); 6123 } 6124 6125 TEST_F(FormatTest, FormatStarDependingOnContext) { 6126 verifyFormat("void f(int *a);"); 6127 verifyFormat("void f() { f(fint * b); }"); 6128 verifyFormat("class A {\n void f(int *a);\n};"); 6129 verifyFormat("class A {\n int *a;\n};"); 6130 verifyFormat("namespace a {\n" 6131 "namespace b {\n" 6132 "class A {\n" 6133 " void f() {}\n" 6134 " int *a;\n" 6135 "};\n" 6136 "}\n" 6137 "}"); 6138 } 6139 6140 TEST_F(FormatTest, SpecialTokensAtEndOfLine) { 6141 verifyFormat("while"); 6142 verifyFormat("operator"); 6143 } 6144 6145 //===----------------------------------------------------------------------===// 6146 // Objective-C tests. 6147 //===----------------------------------------------------------------------===// 6148 6149 TEST_F(FormatTest, FormatForObjectiveCMethodDecls) { 6150 verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;"); 6151 EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;", 6152 format("-(NSUInteger)indexOfObject:(id)anObject;")); 6153 EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;")); 6154 EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;")); 6155 EXPECT_EQ("- (NSInteger)Method3:(id)anObject;", 6156 format("-(NSInteger)Method3:(id)anObject;")); 6157 EXPECT_EQ("- (NSInteger)Method4:(id)anObject;", 6158 format("-(NSInteger)Method4:(id)anObject;")); 6159 EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;", 6160 format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;")); 6161 EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;", 6162 format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;")); 6163 EXPECT_EQ( 6164 "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;", 6165 format( 6166 "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;")); 6167 6168 // Very long objectiveC method declaration. 6169 verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n" 6170 " inRange:(NSRange)range\n" 6171 " outRange:(NSRange)out_range\n" 6172 " outRange1:(NSRange)out_range1\n" 6173 " outRange2:(NSRange)out_range2\n" 6174 " outRange3:(NSRange)out_range3\n" 6175 " outRange4:(NSRange)out_range4\n" 6176 " outRange5:(NSRange)out_range5\n" 6177 " outRange6:(NSRange)out_range6\n" 6178 " outRange7:(NSRange)out_range7\n" 6179 " outRange8:(NSRange)out_range8\n" 6180 " outRange9:(NSRange)out_range9;"); 6181 6182 verifyFormat("- (int)sum:(vector<int>)numbers;"); 6183 verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;"); 6184 // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC 6185 // protocol lists (but not for template classes): 6186 //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;"); 6187 6188 verifyFormat("- (int (*)())foo:(int (*)())f;"); 6189 verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;"); 6190 6191 // If there's no return type (very rare in practice!), LLVM and Google style 6192 // agree. 6193 verifyFormat("- foo;"); 6194 verifyFormat("- foo:(int)f;"); 6195 verifyGoogleFormat("- foo:(int)foo;"); 6196 } 6197 6198 TEST_F(FormatTest, FormatObjCInterface) { 6199 verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n" 6200 "@public\n" 6201 " int field1;\n" 6202 "@protected\n" 6203 " int field2;\n" 6204 "@private\n" 6205 " int field3;\n" 6206 "@package\n" 6207 " int field4;\n" 6208 "}\n" 6209 "+ (id)init;\n" 6210 "@end"); 6211 6212 verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n" 6213 " @public\n" 6214 " int field1;\n" 6215 " @protected\n" 6216 " int field2;\n" 6217 " @private\n" 6218 " int field3;\n" 6219 " @package\n" 6220 " int field4;\n" 6221 "}\n" 6222 "+ (id)init;\n" 6223 "@end"); 6224 6225 verifyFormat("@interface /* wait for it */ Foo\n" 6226 "+ (id)init;\n" 6227 "// Look, a comment!\n" 6228 "- (int)answerWith:(int)i;\n" 6229 "@end"); 6230 6231 verifyFormat("@interface Foo\n" 6232 "@end\n" 6233 "@interface Bar\n" 6234 "@end"); 6235 6236 verifyFormat("@interface Foo : Bar\n" 6237 "+ (id)init;\n" 6238 "@end"); 6239 6240 verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n" 6241 "+ (id)init;\n" 6242 "@end"); 6243 6244 verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n" 6245 "+ (id)init;\n" 6246 "@end"); 6247 6248 verifyFormat("@interface Foo (HackStuff)\n" 6249 "+ (id)init;\n" 6250 "@end"); 6251 6252 verifyFormat("@interface Foo ()\n" 6253 "+ (id)init;\n" 6254 "@end"); 6255 6256 verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n" 6257 "+ (id)init;\n" 6258 "@end"); 6259 6260 verifyGoogleFormat("@interface Foo (HackStuff) <MyProtocol>\n" 6261 "+ (id)init;\n" 6262 "@end"); 6263 6264 verifyFormat("@interface Foo {\n" 6265 " int _i;\n" 6266 "}\n" 6267 "+ (id)init;\n" 6268 "@end"); 6269 6270 verifyFormat("@interface Foo : Bar {\n" 6271 " int _i;\n" 6272 "}\n" 6273 "+ (id)init;\n" 6274 "@end"); 6275 6276 verifyFormat("@interface Foo : Bar <Baz, Quux> {\n" 6277 " int _i;\n" 6278 "}\n" 6279 "+ (id)init;\n" 6280 "@end"); 6281 6282 verifyFormat("@interface Foo (HackStuff) {\n" 6283 " int _i;\n" 6284 "}\n" 6285 "+ (id)init;\n" 6286 "@end"); 6287 6288 verifyFormat("@interface Foo () {\n" 6289 " int _i;\n" 6290 "}\n" 6291 "+ (id)init;\n" 6292 "@end"); 6293 6294 verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n" 6295 " int _i;\n" 6296 "}\n" 6297 "+ (id)init;\n" 6298 "@end"); 6299 6300 FormatStyle OnePerLine = getGoogleStyle(); 6301 OnePerLine.BinPackParameters = false; 6302 verifyFormat("@interface aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa () <\n" 6303 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6304 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6305 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6306 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n" 6307 "}", 6308 OnePerLine); 6309 } 6310 6311 TEST_F(FormatTest, FormatObjCImplementation) { 6312 verifyFormat("@implementation Foo : NSObject {\n" 6313 "@public\n" 6314 " int field1;\n" 6315 "@protected\n" 6316 " int field2;\n" 6317 "@private\n" 6318 " int field3;\n" 6319 "@package\n" 6320 " int field4;\n" 6321 "}\n" 6322 "+ (id)init {\n}\n" 6323 "@end"); 6324 6325 verifyGoogleFormat("@implementation Foo : NSObject {\n" 6326 " @public\n" 6327 " int field1;\n" 6328 " @protected\n" 6329 " int field2;\n" 6330 " @private\n" 6331 " int field3;\n" 6332 " @package\n" 6333 " int field4;\n" 6334 "}\n" 6335 "+ (id)init {\n}\n" 6336 "@end"); 6337 6338 verifyFormat("@implementation Foo\n" 6339 "+ (id)init {\n" 6340 " if (true)\n" 6341 " return nil;\n" 6342 "}\n" 6343 "// Look, a comment!\n" 6344 "- (int)answerWith:(int)i {\n" 6345 " return i;\n" 6346 "}\n" 6347 "+ (int)answerWith:(int)i {\n" 6348 " return i;\n" 6349 "}\n" 6350 "@end"); 6351 6352 verifyFormat("@implementation Foo\n" 6353 "@end\n" 6354 "@implementation Bar\n" 6355 "@end"); 6356 6357 EXPECT_EQ("@implementation Foo : Bar\n" 6358 "+ (id)init {\n}\n" 6359 "- (void)foo {\n}\n" 6360 "@end", 6361 format("@implementation Foo : Bar\n" 6362 "+(id)init{}\n" 6363 "-(void)foo{}\n" 6364 "@end")); 6365 6366 verifyFormat("@implementation Foo {\n" 6367 " int _i;\n" 6368 "}\n" 6369 "+ (id)init {\n}\n" 6370 "@end"); 6371 6372 verifyFormat("@implementation Foo : Bar {\n" 6373 " int _i;\n" 6374 "}\n" 6375 "+ (id)init {\n}\n" 6376 "@end"); 6377 6378 verifyFormat("@implementation Foo (HackStuff)\n" 6379 "+ (id)init {\n}\n" 6380 "@end"); 6381 verifyFormat("@implementation ObjcClass\n" 6382 "- (void)method;\n" 6383 "{}\n" 6384 "@end"); 6385 } 6386 6387 TEST_F(FormatTest, FormatObjCProtocol) { 6388 verifyFormat("@protocol Foo\n" 6389 "@property(weak) id delegate;\n" 6390 "- (NSUInteger)numberOfThings;\n" 6391 "@end"); 6392 6393 verifyFormat("@protocol MyProtocol <NSObject>\n" 6394 "- (NSUInteger)numberOfThings;\n" 6395 "@end"); 6396 6397 verifyGoogleFormat("@protocol MyProtocol<NSObject>\n" 6398 "- (NSUInteger)numberOfThings;\n" 6399 "@end"); 6400 6401 verifyFormat("@protocol Foo;\n" 6402 "@protocol Bar;\n"); 6403 6404 verifyFormat("@protocol Foo\n" 6405 "@end\n" 6406 "@protocol Bar\n" 6407 "@end"); 6408 6409 verifyFormat("@protocol myProtocol\n" 6410 "- (void)mandatoryWithInt:(int)i;\n" 6411 "@optional\n" 6412 "- (void)optional;\n" 6413 "@required\n" 6414 "- (void)required;\n" 6415 "@optional\n" 6416 "@property(assign) int madProp;\n" 6417 "@end\n"); 6418 6419 verifyFormat("@property(nonatomic, assign, readonly)\n" 6420 " int *looooooooooooooooooooooooooooongNumber;\n" 6421 "@property(nonatomic, assign, readonly)\n" 6422 " NSString *looooooooooooooooooooooooooooongName;"); 6423 6424 verifyFormat("@implementation PR18406\n" 6425 "}\n" 6426 "@end"); 6427 } 6428 6429 TEST_F(FormatTest, FormatObjCMethodDeclarations) { 6430 verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n" 6431 " rect:(NSRect)theRect\n" 6432 " interval:(float)theInterval {\n" 6433 "}"); 6434 verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n" 6435 " longKeyword:(NSRect)theRect\n" 6436 " evenLongerKeyword:(float)theInterval\n" 6437 " error:(NSError **)theError {\n" 6438 "}"); 6439 } 6440 6441 TEST_F(FormatTest, FormatObjCMethodExpr) { 6442 verifyFormat("[foo bar:baz];"); 6443 verifyFormat("return [foo bar:baz];"); 6444 verifyFormat("f([foo bar:baz]);"); 6445 verifyFormat("f(2, [foo bar:baz]);"); 6446 verifyFormat("f(2, a ? b : c);"); 6447 verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];"); 6448 6449 // Unary operators. 6450 verifyFormat("int a = +[foo bar:baz];"); 6451 verifyFormat("int a = -[foo bar:baz];"); 6452 verifyFormat("int a = ![foo bar:baz];"); 6453 verifyFormat("int a = ~[foo bar:baz];"); 6454 verifyFormat("int a = ++[foo bar:baz];"); 6455 verifyFormat("int a = --[foo bar:baz];"); 6456 verifyFormat("int a = sizeof [foo bar:baz];"); 6457 verifyFormat("int a = alignof [foo bar:baz];", getGoogleStyle()); 6458 verifyFormat("int a = &[foo bar:baz];"); 6459 verifyFormat("int a = *[foo bar:baz];"); 6460 // FIXME: Make casts work, without breaking f()[4]. 6461 //verifyFormat("int a = (int)[foo bar:baz];"); 6462 //verifyFormat("return (int)[foo bar:baz];"); 6463 //verifyFormat("(void)[foo bar:baz];"); 6464 verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];"); 6465 6466 // Binary operators. 6467 verifyFormat("[foo bar:baz], [foo bar:baz];"); 6468 verifyFormat("[foo bar:baz] = [foo bar:baz];"); 6469 verifyFormat("[foo bar:baz] *= [foo bar:baz];"); 6470 verifyFormat("[foo bar:baz] /= [foo bar:baz];"); 6471 verifyFormat("[foo bar:baz] %= [foo bar:baz];"); 6472 verifyFormat("[foo bar:baz] += [foo bar:baz];"); 6473 verifyFormat("[foo bar:baz] -= [foo bar:baz];"); 6474 verifyFormat("[foo bar:baz] <<= [foo bar:baz];"); 6475 verifyFormat("[foo bar:baz] >>= [foo bar:baz];"); 6476 verifyFormat("[foo bar:baz] &= [foo bar:baz];"); 6477 verifyFormat("[foo bar:baz] ^= [foo bar:baz];"); 6478 verifyFormat("[foo bar:baz] |= [foo bar:baz];"); 6479 verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];"); 6480 verifyFormat("[foo bar:baz] || [foo bar:baz];"); 6481 verifyFormat("[foo bar:baz] && [foo bar:baz];"); 6482 verifyFormat("[foo bar:baz] | [foo bar:baz];"); 6483 verifyFormat("[foo bar:baz] ^ [foo bar:baz];"); 6484 verifyFormat("[foo bar:baz] & [foo bar:baz];"); 6485 verifyFormat("[foo bar:baz] == [foo bar:baz];"); 6486 verifyFormat("[foo bar:baz] != [foo bar:baz];"); 6487 verifyFormat("[foo bar:baz] >= [foo bar:baz];"); 6488 verifyFormat("[foo bar:baz] <= [foo bar:baz];"); 6489 verifyFormat("[foo bar:baz] > [foo bar:baz];"); 6490 verifyFormat("[foo bar:baz] < [foo bar:baz];"); 6491 verifyFormat("[foo bar:baz] >> [foo bar:baz];"); 6492 verifyFormat("[foo bar:baz] << [foo bar:baz];"); 6493 verifyFormat("[foo bar:baz] - [foo bar:baz];"); 6494 verifyFormat("[foo bar:baz] + [foo bar:baz];"); 6495 verifyFormat("[foo bar:baz] * [foo bar:baz];"); 6496 verifyFormat("[foo bar:baz] / [foo bar:baz];"); 6497 verifyFormat("[foo bar:baz] % [foo bar:baz];"); 6498 // Whew! 6499 6500 verifyFormat("return in[42];"); 6501 verifyFormat("for (id foo in [self getStuffFor:bla]) {\n" 6502 "}"); 6503 6504 verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];"); 6505 verifyFormat("[self stuffWithInt:a ? b : c float:4.5];"); 6506 verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];"); 6507 verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];"); 6508 verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]"); 6509 verifyFormat("[button setAction:@selector(zoomOut:)];"); 6510 verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];"); 6511 6512 verifyFormat("arr[[self indexForFoo:a]];"); 6513 verifyFormat("throw [self errorFor:a];"); 6514 verifyFormat("@throw [self errorFor:a];"); 6515 6516 verifyFormat("[(id)foo bar:(id)baz quux:(id)snorf];"); 6517 verifyFormat("[(id)foo bar:(id) ? baz : quux];"); 6518 verifyFormat("4 > 4 ? (id)a : (id)baz;"); 6519 6520 // This tests that the formatter doesn't break after "backing" but before ":", 6521 // which would be at 80 columns. 6522 verifyFormat( 6523 "void f() {\n" 6524 " if ((self = [super initWithContentRect:contentRect\n" 6525 " styleMask:styleMask ?: otherMask\n" 6526 " backing:NSBackingStoreBuffered\n" 6527 " defer:YES]))"); 6528 6529 verifyFormat( 6530 "[foo checkThatBreakingAfterColonWorksOk:\n" 6531 " [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];"); 6532 6533 verifyFormat("[myObj short:arg1 // Force line break\n" 6534 " longKeyword:arg2 != nil ? arg2 : @\"longKeyword\"\n" 6535 " evenLongerKeyword:arg3 ?: @\"evenLongerKeyword\"\n" 6536 " error:arg4];"); 6537 verifyFormat( 6538 "void f() {\n" 6539 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 6540 " initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n" 6541 " pos.width(), pos.height())\n" 6542 " styleMask:NSBorderlessWindowMask\n" 6543 " backing:NSBackingStoreBuffered\n" 6544 " defer:NO]);\n" 6545 "}"); 6546 verifyFormat( 6547 "void f() {\n" 6548 " popup_wdow_.reset([[RenderWidgetPopupWindow alloc]\n" 6549 " iniithContentRect:NSMakRet(origin_global.x, origin_global.y,\n" 6550 " pos.width(), pos.height())\n" 6551 " syeMask:NSBorderlessWindowMask\n" 6552 " bking:NSBackingStoreBuffered\n" 6553 " der:NO]);\n" 6554 "}", 6555 getLLVMStyleWithColumns(70)); 6556 verifyFormat("{\n" 6557 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 6558 " initWithContentRect:NSMakeRect(origin_global.x,\n" 6559 " origin_global.y,\n" 6560 " pos.width(),\n" 6561 " pos.height())\n" 6562 " styleMask:NSBorderlessWindowMask\n" 6563 " backing:NSBackingStoreBuffered\n" 6564 " defer:NO]);\n" 6565 "}", 6566 getChromiumStyle(FormatStyle::LK_Cpp)); 6567 verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n" 6568 " with:contentsNativeView];"); 6569 6570 verifyFormat( 6571 "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n" 6572 " owner:nillllll];"); 6573 6574 verifyFormat( 6575 "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n" 6576 " forType:kBookmarkButtonDragType];"); 6577 6578 verifyFormat("[defaultCenter addObserver:self\n" 6579 " selector:@selector(willEnterFullscreen)\n" 6580 " name:kWillEnterFullscreenNotification\n" 6581 " object:nil];"); 6582 verifyFormat("[image_rep drawInRect:drawRect\n" 6583 " fromRect:NSZeroRect\n" 6584 " operation:NSCompositeCopy\n" 6585 " fraction:1.0\n" 6586 " respectFlipped:NO\n" 6587 " hints:nil];"); 6588 6589 verifyFormat( 6590 "scoped_nsobject<NSTextField> message(\n" 6591 " // The frame will be fixed up when |-setMessageText:| is called.\n" 6592 " [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);"); 6593 verifyFormat("[self aaaaaa:bbbbbbbbbbbbb\n" 6594 " aaaaaaaaaa:bbbbbbbbbbbbbbbbb\n" 6595 " aaaaa:bbbbbbbbbbb + bbbbbbbbbbbb\n" 6596 " aaaa:bbb];"); 6597 verifyFormat("[self param:function( //\n" 6598 " parameter)]"); 6599 verifyFormat( 6600 "[self aaaaaaaaaa:aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 6601 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 6602 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa];"); 6603 6604 // Variadic parameters. 6605 verifyFormat( 6606 "NSArray *myStrings = [NSArray stringarray:@\"a\", @\"b\", nil];"); 6607 verifyFormat( 6608 "[self aaaaaaaaaaaaa:aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 6609 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 6610 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa];"); 6611 verifyFormat("[self // break\n" 6612 " a:a\n" 6613 " aaa:aaa];"); 6614 verifyFormat("bool a = ([aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaa ||\n" 6615 " [aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaaaaa);"); 6616 } 6617 6618 TEST_F(FormatTest, ObjCAt) { 6619 verifyFormat("@autoreleasepool"); 6620 verifyFormat("@catch"); 6621 verifyFormat("@class"); 6622 verifyFormat("@compatibility_alias"); 6623 verifyFormat("@defs"); 6624 verifyFormat("@dynamic"); 6625 verifyFormat("@encode"); 6626 verifyFormat("@end"); 6627 verifyFormat("@finally"); 6628 verifyFormat("@implementation"); 6629 verifyFormat("@import"); 6630 verifyFormat("@interface"); 6631 verifyFormat("@optional"); 6632 verifyFormat("@package"); 6633 verifyFormat("@private"); 6634 verifyFormat("@property"); 6635 verifyFormat("@protected"); 6636 verifyFormat("@protocol"); 6637 verifyFormat("@public"); 6638 verifyFormat("@required"); 6639 verifyFormat("@selector"); 6640 verifyFormat("@synchronized"); 6641 verifyFormat("@synthesize"); 6642 verifyFormat("@throw"); 6643 verifyFormat("@try"); 6644 6645 EXPECT_EQ("@interface", format("@ interface")); 6646 6647 // The precise formatting of this doesn't matter, nobody writes code like 6648 // this. 6649 verifyFormat("@ /*foo*/ interface"); 6650 } 6651 6652 TEST_F(FormatTest, ObjCSnippets) { 6653 verifyFormat("@autoreleasepool {\n" 6654 " foo();\n" 6655 "}"); 6656 verifyFormat("@class Foo, Bar;"); 6657 verifyFormat("@compatibility_alias AliasName ExistingClass;"); 6658 verifyFormat("@dynamic textColor;"); 6659 verifyFormat("char *buf1 = @encode(int *);"); 6660 verifyFormat("char *buf1 = @encode(typeof(4 * 5));"); 6661 verifyFormat("char *buf1 = @encode(int **);"); 6662 verifyFormat("Protocol *proto = @protocol(p1);"); 6663 verifyFormat("SEL s = @selector(foo:);"); 6664 verifyFormat("@synchronized(self) {\n" 6665 " f();\n" 6666 "}"); 6667 6668 verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 6669 verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 6670 6671 verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;"); 6672 verifyFormat("@property(assign, getter=isEditable) BOOL editable;"); 6673 verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;"); 6674 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 6675 getMozillaStyle()); 6676 verifyFormat("@property BOOL editable;", getMozillaStyle()); 6677 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 6678 getWebKitStyle()); 6679 verifyFormat("@property BOOL editable;", getWebKitStyle()); 6680 6681 verifyFormat("@import foo.bar;\n" 6682 "@import baz;"); 6683 } 6684 6685 TEST_F(FormatTest, ObjCLiterals) { 6686 verifyFormat("@\"String\""); 6687 verifyFormat("@1"); 6688 verifyFormat("@+4.8"); 6689 verifyFormat("@-4"); 6690 verifyFormat("@1LL"); 6691 verifyFormat("@.5"); 6692 verifyFormat("@'c'"); 6693 verifyFormat("@true"); 6694 6695 verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);"); 6696 verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);"); 6697 verifyFormat("NSNumber *favoriteColor = @(Green);"); 6698 verifyFormat("NSString *path = @(getenv(\"PATH\"));"); 6699 6700 verifyFormat("[dictionary setObject:@(1) forKey:@\"number\"];"); 6701 } 6702 6703 TEST_F(FormatTest, ObjCDictLiterals) { 6704 verifyFormat("@{"); 6705 verifyFormat("@{}"); 6706 verifyFormat("@{@\"one\" : @1}"); 6707 verifyFormat("return @{@\"one\" : @1;"); 6708 verifyFormat("@{@\"one\" : @1}"); 6709 6710 verifyFormat("@{@\"one\" : @{@2 : @1}}"); 6711 verifyFormat("@{\n" 6712 " @\"one\" : @{@2 : @1},\n" 6713 "}"); 6714 6715 verifyFormat("@{1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2}"); 6716 verifyFormat("[self setDict:@{}"); 6717 verifyFormat("[self setDict:@{@1 : @2}"); 6718 verifyFormat("NSLog(@\"%@\", @{@1 : @2, @2 : @3}[@1]);"); 6719 verifyFormat( 6720 "NSDictionary *masses = @{@\"H\" : @1.0078, @\"He\" : @4.0026};"); 6721 verifyFormat( 6722 "NSDictionary *settings = @{AVEncoderKey : @(AVAudioQualityMax)};"); 6723 6724 verifyFormat( 6725 "NSDictionary *d = @{\n" 6726 " @\"nam\" : NSUserNam(),\n" 6727 " @\"dte\" : [NSDate date],\n" 6728 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 6729 "};"); 6730 verifyFormat( 6731 "@{\n" 6732 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 6733 "regularFont,\n" 6734 "};"); 6735 verifyGoogleFormat( 6736 "@{\n" 6737 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 6738 "regularFont,\n" 6739 "};"); 6740 verifyFormat( 6741 "@{\n" 6742 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee :\n" 6743 " reeeeeeeeeeeeeeeeeeeeeeeegularFont,\n" 6744 "};"); 6745 6746 // We should try to be robust in case someone forgets the "@". 6747 verifyFormat( 6748 "NSDictionary *d = {\n" 6749 " @\"nam\" : NSUserNam(),\n" 6750 " @\"dte\" : [NSDate date],\n" 6751 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 6752 "};"); 6753 verifyFormat("NSMutableDictionary *dictionary =\n" 6754 " [NSMutableDictionary dictionaryWithDictionary:@{\n" 6755 " aaaaaaaaaaaaaaaaaaaaa : aaaaaaaaaaaaa,\n" 6756 " bbbbbbbbbbbbbbbbbb : bbbbb,\n" 6757 " cccccccccccccccc : ccccccccccccccc\n" 6758 " }];"); 6759 } 6760 6761 TEST_F(FormatTest, ObjCArrayLiterals) { 6762 verifyFormat("@["); 6763 verifyFormat("@[]"); 6764 verifyFormat( 6765 "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];"); 6766 verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];"); 6767 verifyFormat("NSArray *array = @[ [foo description] ];"); 6768 6769 verifyFormat( 6770 "NSArray *some_variable = @[\n" 6771 " aaaa == bbbbbbbbbbb ? @\"aaaaaaaaaaaa\" : @\"aaaaaaaaaaaaaa\",\n" 6772 " @\"aaaaaaaaaaaaaaaaa\",\n" 6773 " @\"aaaaaaaaaaaaaaaaa\",\n" 6774 " @\"aaaaaaaaaaaaaaaaa\"\n" 6775 "];"); 6776 verifyFormat("NSArray *some_variable = @[\n" 6777 " @\"aaaaaaaaaaaaaaaaa\",\n" 6778 " @\"aaaaaaaaaaaaaaaaa\",\n" 6779 " @\"aaaaaaaaaaaaaaaaa\",\n" 6780 " @\"aaaaaaaaaaaaaaaaa\",\n" 6781 "];"); 6782 verifyGoogleFormat("NSArray *some_variable = @[\n" 6783 " @\"aaaaaaaaaaaaaaaaa\",\n" 6784 " @\"aaaaaaaaaaaaaaaaa\",\n" 6785 " @\"aaaaaaaaaaaaaaaaa\",\n" 6786 " @\"aaaaaaaaaaaaaaaaa\"\n" 6787 "];"); 6788 6789 // We should try to be robust in case someone forgets the "@". 6790 verifyFormat("NSArray *some_variable = [\n" 6791 " @\"aaaaaaaaaaaaaaaaa\",\n" 6792 " @\"aaaaaaaaaaaaaaaaa\",\n" 6793 " @\"aaaaaaaaaaaaaaaaa\",\n" 6794 " @\"aaaaaaaaaaaaaaaaa\",\n" 6795 "];"); 6796 verifyFormat( 6797 "- (NSAttributedString *)attributedStringForSegment:(NSUInteger)segment\n" 6798 " index:(NSUInteger)index\n" 6799 " nonDigitAttributes:\n" 6800 " (NSDictionary *)noDigitAttributes;"); 6801 verifyFormat( 6802 "[someFunction someLooooooooooooongParameter:\n" 6803 " @[ NSBundle.mainBundle.infoDictionary[@\"a\"] ]];"); 6804 } 6805 6806 TEST_F(FormatTest, ReformatRegionAdjustsIndent) { 6807 EXPECT_EQ("{\n" 6808 "{\n" 6809 "a;\n" 6810 "b;\n" 6811 "}\n" 6812 "}", 6813 format("{\n" 6814 "{\n" 6815 "a;\n" 6816 " b;\n" 6817 "}\n" 6818 "}", 6819 13, 2, getLLVMStyle())); 6820 EXPECT_EQ("{\n" 6821 "{\n" 6822 " a;\n" 6823 "b;\n" 6824 "}\n" 6825 "}", 6826 format("{\n" 6827 "{\n" 6828 " a;\n" 6829 "b;\n" 6830 "}\n" 6831 "}", 6832 9, 2, getLLVMStyle())); 6833 EXPECT_EQ("{\n" 6834 "{\n" 6835 "public:\n" 6836 " b;\n" 6837 "}\n" 6838 "}", 6839 format("{\n" 6840 "{\n" 6841 "public:\n" 6842 " b;\n" 6843 "}\n" 6844 "}", 6845 17, 2, getLLVMStyle())); 6846 EXPECT_EQ("{\n" 6847 "{\n" 6848 "a;\n" 6849 "}\n" 6850 "{\n" 6851 " b; //\n" 6852 "}\n" 6853 "}", 6854 format("{\n" 6855 "{\n" 6856 "a;\n" 6857 "}\n" 6858 "{\n" 6859 " b; //\n" 6860 "}\n" 6861 "}", 6862 22, 2, getLLVMStyle())); 6863 EXPECT_EQ(" {\n" 6864 " a; //\n" 6865 " }", 6866 format(" {\n" 6867 "a; //\n" 6868 " }", 6869 4, 2, getLLVMStyle())); 6870 EXPECT_EQ("void f() {}\n" 6871 "void g() {}", 6872 format("void f() {}\n" 6873 "void g() {}", 6874 13, 0, getLLVMStyle())); 6875 EXPECT_EQ("int a; // comment\n" 6876 " // line 2\n" 6877 "int b;", 6878 format("int a; // comment\n" 6879 " // line 2\n" 6880 " int b;", 6881 35, 0, getLLVMStyle())); 6882 EXPECT_EQ(" int a;\n" 6883 " void\n" 6884 " ffffff() {\n" 6885 " }", 6886 format(" int a;\n" 6887 "void ffffff() {}", 6888 11, 0, getLLVMStyleWithColumns(11))); 6889 6890 EXPECT_EQ(" void f() {\n" 6891 "#define A 1\n" 6892 " }", 6893 format(" void f() {\n" 6894 " #define A 1\n" // Format this line. 6895 " }", 6896 20, 0, getLLVMStyle())); 6897 EXPECT_EQ(" void f() {\n" 6898 " int i;\n" 6899 "#define A \\\n" 6900 " int i; \\\n" 6901 " int j;\n" 6902 " int k;\n" 6903 " }", 6904 format(" void f() {\n" 6905 " int i;\n" 6906 "#define A \\\n" 6907 " int i; \\\n" 6908 " int j;\n" 6909 " int k;\n" // Format this line. 6910 " }", 6911 67, 0, getLLVMStyle())); 6912 } 6913 6914 TEST_F(FormatTest, BreaksStringLiterals) { 6915 EXPECT_EQ("\"some text \"\n" 6916 "\"other\";", 6917 format("\"some text other\";", getLLVMStyleWithColumns(12))); 6918 EXPECT_EQ("\"some text \"\n" 6919 "\"other\";", 6920 format("\\\n\"some text other\";", getLLVMStyleWithColumns(12))); 6921 EXPECT_EQ( 6922 "#define A \\\n" 6923 " \"some \" \\\n" 6924 " \"text \" \\\n" 6925 " \"other\";", 6926 format("#define A \"some text other\";", getLLVMStyleWithColumns(12))); 6927 EXPECT_EQ( 6928 "#define A \\\n" 6929 " \"so \" \\\n" 6930 " \"text \" \\\n" 6931 " \"other\";", 6932 format("#define A \"so text other\";", getLLVMStyleWithColumns(12))); 6933 6934 EXPECT_EQ("\"some text\"", 6935 format("\"some text\"", getLLVMStyleWithColumns(1))); 6936 EXPECT_EQ("\"some text\"", 6937 format("\"some text\"", getLLVMStyleWithColumns(11))); 6938 EXPECT_EQ("\"some \"\n" 6939 "\"text\"", 6940 format("\"some text\"", getLLVMStyleWithColumns(10))); 6941 EXPECT_EQ("\"some \"\n" 6942 "\"text\"", 6943 format("\"some text\"", getLLVMStyleWithColumns(7))); 6944 EXPECT_EQ("\"some\"\n" 6945 "\" tex\"\n" 6946 "\"t\"", 6947 format("\"some text\"", getLLVMStyleWithColumns(6))); 6948 EXPECT_EQ("\"some\"\n" 6949 "\" tex\"\n" 6950 "\" and\"", 6951 format("\"some tex and\"", getLLVMStyleWithColumns(6))); 6952 EXPECT_EQ("\"some\"\n" 6953 "\"/tex\"\n" 6954 "\"/and\"", 6955 format("\"some/tex/and\"", getLLVMStyleWithColumns(6))); 6956 6957 EXPECT_EQ("variable =\n" 6958 " \"long string \"\n" 6959 " \"literal\";", 6960 format("variable = \"long string literal\";", 6961 getLLVMStyleWithColumns(20))); 6962 6963 EXPECT_EQ("variable = f(\n" 6964 " \"long string \"\n" 6965 " \"literal\",\n" 6966 " short,\n" 6967 " loooooooooooooooooooong);", 6968 format("variable = f(\"long string literal\", short, " 6969 "loooooooooooooooooooong);", 6970 getLLVMStyleWithColumns(20))); 6971 6972 EXPECT_EQ("f(g(\"long string \"\n" 6973 " \"literal\"),\n" 6974 " b);", 6975 format("f(g(\"long string literal\"), b);", 6976 getLLVMStyleWithColumns(20))); 6977 EXPECT_EQ("f(g(\"long string \"\n" 6978 " \"literal\",\n" 6979 " a),\n" 6980 " b);", 6981 format("f(g(\"long string literal\", a), b);", 6982 getLLVMStyleWithColumns(20))); 6983 EXPECT_EQ( 6984 "f(\"one two\".split(\n" 6985 " variable));", 6986 format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20))); 6987 EXPECT_EQ("f(\"one two three four five six \"\n" 6988 " \"seven\".split(\n" 6989 " really_looooong_variable));", 6990 format("f(\"one two three four five six seven\"." 6991 "split(really_looooong_variable));", 6992 getLLVMStyleWithColumns(33))); 6993 6994 EXPECT_EQ("f(\"some \"\n" 6995 " \"text\",\n" 6996 " other);", 6997 format("f(\"some text\", other);", getLLVMStyleWithColumns(10))); 6998 6999 // Only break as a last resort. 7000 verifyFormat( 7001 "aaaaaaaaaaaaaaaaaaaa(\n" 7002 " aaaaaaaaaaaaaaaaaaaa,\n" 7003 " aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));"); 7004 7005 EXPECT_EQ( 7006 "\"splitmea\"\n" 7007 "\"trandomp\"\n" 7008 "\"oint\"", 7009 format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10))); 7010 7011 EXPECT_EQ( 7012 "\"split/\"\n" 7013 "\"pathat/\"\n" 7014 "\"slashes\"", 7015 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 7016 7017 EXPECT_EQ( 7018 "\"split/\"\n" 7019 "\"pathat/\"\n" 7020 "\"slashes\"", 7021 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 7022 EXPECT_EQ("\"split at \"\n" 7023 "\"spaces/at/\"\n" 7024 "\"slashes.at.any$\"\n" 7025 "\"non-alphanumeric%\"\n" 7026 "\"1111111111characte\"\n" 7027 "\"rs\"", 7028 format("\"split at " 7029 "spaces/at/" 7030 "slashes.at." 7031 "any$non-" 7032 "alphanumeric%" 7033 "1111111111characte" 7034 "rs\"", 7035 getLLVMStyleWithColumns(20))); 7036 7037 // Verify that splitting the strings understands 7038 // Style::AlwaysBreakBeforeMultilineStrings. 7039 EXPECT_EQ("aaaaaaaaaaaa(aaaaaaaaaaaaa,\n" 7040 " \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n" 7041 " \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");", 7042 format("aaaaaaaaaaaa(aaaaaaaaaaaaa, \"aaaaaaaaaaaaaaaaaaaaaa " 7043 "aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa " 7044 "aaaaaaaaaaaaaaaaaaaaaa\");", 7045 getGoogleStyle())); 7046 EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7047 " \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";", 7048 format("return \"aaaaaaaaaaaaaaaaaaaaaa " 7049 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa " 7050 "aaaaaaaaaaaaaaaaaaaaaa\";", 7051 getGoogleStyle())); 7052 EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7053 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 7054 format("llvm::outs() << " 7055 "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa" 7056 "aaaaaaaaaaaaaaaaaaa\";")); 7057 EXPECT_EQ("ffff(\n" 7058 " {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7059 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 7060 format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa " 7061 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 7062 getGoogleStyle())); 7063 7064 FormatStyle AlignLeft = getLLVMStyleWithColumns(12); 7065 AlignLeft.AlignEscapedNewlinesLeft = true; 7066 EXPECT_EQ( 7067 "#define A \\\n" 7068 " \"some \" \\\n" 7069 " \"text \" \\\n" 7070 " \"other\";", 7071 format("#define A \"some text other\";", AlignLeft)); 7072 } 7073 7074 TEST_F(FormatTest, BreaksStringLiteralsWithTabs) { 7075 EXPECT_EQ( 7076 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 7077 "(\n" 7078 " \"x\t\");", 7079 format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 7080 "aaaaaaa(" 7081 "\"x\t\");")); 7082 } 7083 7084 TEST_F(FormatTest, BreaksWideAndNSStringLiterals) { 7085 EXPECT_EQ( 7086 "u8\"utf8 string \"\n" 7087 "u8\"literal\";", 7088 format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16))); 7089 EXPECT_EQ( 7090 "u\"utf16 string \"\n" 7091 "u\"literal\";", 7092 format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16))); 7093 EXPECT_EQ( 7094 "U\"utf32 string \"\n" 7095 "U\"literal\";", 7096 format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16))); 7097 EXPECT_EQ("L\"wide string \"\n" 7098 "L\"literal\";", 7099 format("L\"wide string literal\";", getGoogleStyleWithColumns(16))); 7100 EXPECT_EQ("@\"NSString \"\n" 7101 "@\"literal\";", 7102 format("@\"NSString literal\";", getGoogleStyleWithColumns(19))); 7103 } 7104 7105 TEST_F(FormatTest, BreaksRawStringLiterals) { 7106 EXPECT_EQ("R\"x(raw )x\"\n" 7107 "R\"x(literal)x\";", 7108 format("R\"x(raw literal)x\";", getGoogleStyleWithColumns(15))); 7109 EXPECT_EQ("uR\"x(raw )x\"\n" 7110 "uR\"x(literal)x\";", 7111 format("uR\"x(raw literal)x\";", getGoogleStyleWithColumns(16))); 7112 EXPECT_EQ("u8R\"x(raw )x\"\n" 7113 "u8R\"x(literal)x\";", 7114 format("u8R\"x(raw literal)x\";", getGoogleStyleWithColumns(17))); 7115 EXPECT_EQ("LR\"x(raw )x\"\n" 7116 "LR\"x(literal)x\";", 7117 format("LR\"x(raw literal)x\";", getGoogleStyleWithColumns(16))); 7118 EXPECT_EQ("UR\"x(raw )x\"\n" 7119 "UR\"x(literal)x\";", 7120 format("UR\"x(raw literal)x\";", getGoogleStyleWithColumns(16))); 7121 } 7122 7123 TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) { 7124 FormatStyle Style = getLLVMStyleWithColumns(20); 7125 EXPECT_EQ( 7126 "_T(\"aaaaaaaaaaaaaa\")\n" 7127 "_T(\"aaaaaaaaaaaaaa\")\n" 7128 "_T(\"aaaaaaaaaaaa\")", 7129 format(" _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style)); 7130 EXPECT_EQ("f(x, _T(\"aaaaaaaaa\")\n" 7131 " _T(\"aaaaaa\"),\n" 7132 " z);", 7133 format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style)); 7134 7135 // FIXME: Handle embedded spaces in one iteration. 7136 // EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n" 7137 // "_T(\"aaaaaaaaaaaaa\")\n" 7138 // "_T(\"aaaaaaaaaaaaa\")\n" 7139 // "_T(\"a\")", 7140 // format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 7141 // getLLVMStyleWithColumns(20))); 7142 EXPECT_EQ( 7143 "_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 7144 format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style)); 7145 } 7146 7147 TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) { 7148 EXPECT_EQ( 7149 "aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7150 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7151 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 7152 format("aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7153 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7154 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";")); 7155 } 7156 7157 TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) { 7158 EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);", 7159 format("f(g(R\"x(raw literal)x\", a), b);", getGoogleStyle())); 7160 EXPECT_EQ("fffffffffff(g(R\"x(\n" 7161 "multiline raw string literal xxxxxxxxxxxxxx\n" 7162 ")x\",\n" 7163 " a),\n" 7164 " b);", 7165 format("fffffffffff(g(R\"x(\n" 7166 "multiline raw string literal xxxxxxxxxxxxxx\n" 7167 ")x\", a), b);", 7168 getGoogleStyleWithColumns(20))); 7169 EXPECT_EQ("fffffffffff(\n" 7170 " g(R\"x(qqq\n" 7171 "multiline raw string literal xxxxxxxxxxxxxx\n" 7172 ")x\",\n" 7173 " a),\n" 7174 " b);", 7175 format("fffffffffff(g(R\"x(qqq\n" 7176 "multiline raw string literal xxxxxxxxxxxxxx\n" 7177 ")x\", a), b);", 7178 getGoogleStyleWithColumns(20))); 7179 7180 EXPECT_EQ("fffffffffff(R\"x(\n" 7181 "multiline raw string literal xxxxxxxxxxxxxx\n" 7182 ")x\");", 7183 format("fffffffffff(R\"x(\n" 7184 "multiline raw string literal xxxxxxxxxxxxxx\n" 7185 ")x\");", 7186 getGoogleStyleWithColumns(20))); 7187 EXPECT_EQ("fffffffffff(R\"x(\n" 7188 "multiline raw string literal xxxxxxxxxxxxxx\n" 7189 ")x\" + bbbbbb);", 7190 format("fffffffffff(R\"x(\n" 7191 "multiline raw string literal xxxxxxxxxxxxxx\n" 7192 ")x\" + bbbbbb);", 7193 getGoogleStyleWithColumns(20))); 7194 EXPECT_EQ("fffffffffff(\n" 7195 " R\"x(\n" 7196 "multiline raw string literal xxxxxxxxxxxxxx\n" 7197 ")x\" +\n" 7198 " bbbbbb);", 7199 format("fffffffffff(\n" 7200 " R\"x(\n" 7201 "multiline raw string literal xxxxxxxxxxxxxx\n" 7202 ")x\" + bbbbbb);", 7203 getGoogleStyleWithColumns(20))); 7204 } 7205 7206 TEST_F(FormatTest, SkipsUnknownStringLiterals) { 7207 verifyFormat("string a = \"unterminated;"); 7208 EXPECT_EQ("function(\"unterminated,\n" 7209 " OtherParameter);", 7210 format("function( \"unterminated,\n" 7211 " OtherParameter);")); 7212 } 7213 7214 TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) { 7215 FormatStyle Style = getLLVMStyle(); 7216 Style.Standard = FormatStyle::LS_Cpp03; 7217 EXPECT_EQ("#define x(_a) printf(\"foo\" _a);", 7218 format("#define x(_a) printf(\"foo\"_a);", Style)); 7219 } 7220 7221 TEST_F(FormatTest, UnderstandsCpp1y) { 7222 verifyFormat("int bi{1'000'000};"); 7223 } 7224 7225 TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) { 7226 EXPECT_EQ("someFunction(\"aaabbbcccd\"\n" 7227 " \"ddeeefff\");", 7228 format("someFunction(\"aaabbbcccdddeeefff\");", 7229 getLLVMStyleWithColumns(25))); 7230 EXPECT_EQ("someFunction1234567890(\n" 7231 " \"aaabbbcccdddeeefff\");", 7232 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7233 getLLVMStyleWithColumns(26))); 7234 EXPECT_EQ("someFunction1234567890(\n" 7235 " \"aaabbbcccdddeeeff\"\n" 7236 " \"f\");", 7237 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7238 getLLVMStyleWithColumns(25))); 7239 EXPECT_EQ("someFunction1234567890(\n" 7240 " \"aaabbbcccdddeeeff\"\n" 7241 " \"f\");", 7242 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7243 getLLVMStyleWithColumns(24))); 7244 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 7245 " \"ddde \"\n" 7246 " \"efff\");", 7247 format("someFunction(\"aaabbbcc ddde efff\");", 7248 getLLVMStyleWithColumns(25))); 7249 EXPECT_EQ("someFunction(\"aaabbbccc \"\n" 7250 " \"ddeeefff\");", 7251 format("someFunction(\"aaabbbccc ddeeefff\");", 7252 getLLVMStyleWithColumns(25))); 7253 EXPECT_EQ("someFunction1234567890(\n" 7254 " \"aaabb \"\n" 7255 " \"cccdddeeefff\");", 7256 format("someFunction1234567890(\"aaabb cccdddeeefff\");", 7257 getLLVMStyleWithColumns(25))); 7258 EXPECT_EQ("#define A \\\n" 7259 " string s = \\\n" 7260 " \"123456789\" \\\n" 7261 " \"0\"; \\\n" 7262 " int i;", 7263 format("#define A string s = \"1234567890\"; int i;", 7264 getLLVMStyleWithColumns(20))); 7265 // FIXME: Put additional penalties on breaking at non-whitespace locations. 7266 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 7267 " \"dddeeeff\"\n" 7268 " \"f\");", 7269 format("someFunction(\"aaabbbcc dddeeefff\");", 7270 getLLVMStyleWithColumns(25))); 7271 } 7272 7273 TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) { 7274 EXPECT_EQ("\"\\a\"", 7275 format("\"\\a\"", getLLVMStyleWithColumns(3))); 7276 EXPECT_EQ("\"\\\"", 7277 format("\"\\\"", getLLVMStyleWithColumns(2))); 7278 EXPECT_EQ("\"test\"\n" 7279 "\"\\n\"", 7280 format("\"test\\n\"", getLLVMStyleWithColumns(7))); 7281 EXPECT_EQ("\"tes\\\\\"\n" 7282 "\"n\"", 7283 format("\"tes\\\\n\"", getLLVMStyleWithColumns(7))); 7284 EXPECT_EQ("\"\\\\\\\\\"\n" 7285 "\"\\n\"", 7286 format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7))); 7287 EXPECT_EQ("\"\\uff01\"", 7288 format("\"\\uff01\"", getLLVMStyleWithColumns(7))); 7289 EXPECT_EQ("\"\\uff01\"\n" 7290 "\"test\"", 7291 format("\"\\uff01test\"", getLLVMStyleWithColumns(8))); 7292 EXPECT_EQ("\"\\Uff01ff02\"", 7293 format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11))); 7294 EXPECT_EQ("\"\\x000000000001\"\n" 7295 "\"next\"", 7296 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16))); 7297 EXPECT_EQ("\"\\x000000000001next\"", 7298 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15))); 7299 EXPECT_EQ("\"\\x000000000001\"", 7300 format("\"\\x000000000001\"", getLLVMStyleWithColumns(7))); 7301 EXPECT_EQ("\"test\"\n" 7302 "\"\\000000\"\n" 7303 "\"000001\"", 7304 format("\"test\\000000000001\"", getLLVMStyleWithColumns(9))); 7305 EXPECT_EQ("\"test\\000\"\n" 7306 "\"00000000\"\n" 7307 "\"1\"", 7308 format("\"test\\000000000001\"", getLLVMStyleWithColumns(10))); 7309 // FIXME: We probably don't need to care about escape sequences in raw 7310 // literals. 7311 EXPECT_EQ("R\"(\\x)\"\n" 7312 "R\"(\\x00)\"\n", 7313 format("R\"(\\x\\x00)\"\n", getGoogleStyleWithColumns(7))); 7314 } 7315 7316 TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) { 7317 verifyFormat("void f() {\n" 7318 " return g() {}\n" 7319 " void h() {}"); 7320 verifyFormat("int a[] = {void forgot_closing_brace(){f();\n" 7321 "g();\n" 7322 "}"); 7323 } 7324 7325 TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) { 7326 verifyFormat( 7327 "void f() { return C{param1, param2}.SomeCall(param1, param2); }"); 7328 } 7329 7330 TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) { 7331 verifyFormat("class X {\n" 7332 " void f() {\n" 7333 " }\n" 7334 "};", 7335 getLLVMStyleWithColumns(12)); 7336 } 7337 7338 TEST_F(FormatTest, ConfigurableIndentWidth) { 7339 FormatStyle EightIndent = getLLVMStyleWithColumns(18); 7340 EightIndent.IndentWidth = 8; 7341 EightIndent.ContinuationIndentWidth = 8; 7342 verifyFormat("void f() {\n" 7343 " someFunction();\n" 7344 " if (true) {\n" 7345 " f();\n" 7346 " }\n" 7347 "}", 7348 EightIndent); 7349 verifyFormat("class X {\n" 7350 " void f() {\n" 7351 " }\n" 7352 "};", 7353 EightIndent); 7354 verifyFormat("int x[] = {\n" 7355 " call(),\n" 7356 " call()};", 7357 EightIndent); 7358 } 7359 7360 TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) { 7361 verifyFormat("void\n" 7362 "f();", 7363 getLLVMStyleWithColumns(8)); 7364 } 7365 7366 TEST_F(FormatTest, ConfigurableUseOfTab) { 7367 FormatStyle Tab = getLLVMStyleWithColumns(42); 7368 Tab.IndentWidth = 8; 7369 Tab.UseTab = FormatStyle::UT_Always; 7370 Tab.AlignEscapedNewlinesLeft = true; 7371 7372 EXPECT_EQ("if (aaaaaaaa && // q\n" 7373 " bb)\t\t// w\n" 7374 "\t;", 7375 format("if (aaaaaaaa &&// q\n" 7376 "bb)// w\n" 7377 ";", 7378 Tab)); 7379 EXPECT_EQ("if (aaa && bbb) // w\n" 7380 "\t;", 7381 format("if(aaa&&bbb)// w\n" 7382 ";", 7383 Tab)); 7384 7385 verifyFormat("class X {\n" 7386 "\tvoid f() {\n" 7387 "\t\tsomeFunction(parameter1,\n" 7388 "\t\t\t parameter2);\n" 7389 "\t}\n" 7390 "};", 7391 Tab); 7392 verifyFormat("#define A \\\n" 7393 "\tvoid f() { \\\n" 7394 "\t\tsomeFunction( \\\n" 7395 "\t\t parameter1, \\\n" 7396 "\t\t parameter2); \\\n" 7397 "\t}", 7398 Tab); 7399 EXPECT_EQ("void f() {\n" 7400 "\tf();\n" 7401 "\tg();\n" 7402 "}", 7403 format("void f() {\n" 7404 "\tf();\n" 7405 "\tg();\n" 7406 "}", 7407 0, 0, Tab)); 7408 EXPECT_EQ("void f() {\n" 7409 "\tf();\n" 7410 "\tg();\n" 7411 "}", 7412 format("void f() {\n" 7413 "\tf();\n" 7414 "\tg();\n" 7415 "}", 7416 16, 0, Tab)); 7417 EXPECT_EQ("void f() {\n" 7418 " \tf();\n" 7419 "\tg();\n" 7420 "}", 7421 format("void f() {\n" 7422 " \tf();\n" 7423 " \tg();\n" 7424 "}", 7425 21, 0, Tab)); 7426 7427 Tab.TabWidth = 4; 7428 Tab.IndentWidth = 8; 7429 verifyFormat("class TabWidth4Indent8 {\n" 7430 "\t\tvoid f() {\n" 7431 "\t\t\t\tsomeFunction(parameter1,\n" 7432 "\t\t\t\t\t\t\t parameter2);\n" 7433 "\t\t}\n" 7434 "};", 7435 Tab); 7436 7437 Tab.TabWidth = 4; 7438 Tab.IndentWidth = 4; 7439 verifyFormat("class TabWidth4Indent4 {\n" 7440 "\tvoid f() {\n" 7441 "\t\tsomeFunction(parameter1,\n" 7442 "\t\t\t\t\t parameter2);\n" 7443 "\t}\n" 7444 "};", 7445 Tab); 7446 7447 Tab.TabWidth = 8; 7448 Tab.IndentWidth = 4; 7449 verifyFormat("class TabWidth8Indent4 {\n" 7450 " void f() {\n" 7451 "\tsomeFunction(parameter1,\n" 7452 "\t\t parameter2);\n" 7453 " }\n" 7454 "};", 7455 Tab); 7456 7457 Tab.TabWidth = 8; 7458 Tab.IndentWidth = 8; 7459 EXPECT_EQ("/*\n" 7460 "\t a\t\tcomment\n" 7461 "\t in multiple lines\n" 7462 " */", 7463 format(" /*\t \t \n" 7464 " \t \t a\t\tcomment\t \t\n" 7465 " \t \t in multiple lines\t\n" 7466 " \t */", 7467 Tab)); 7468 7469 Tab.UseTab = FormatStyle::UT_ForIndentation; 7470 verifyFormat("{\n" 7471 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7472 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7473 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7474 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7475 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7476 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7477 "};", 7478 Tab); 7479 verifyFormat("enum A {\n" 7480 "\ta1, // Force multiple lines\n" 7481 "\ta2,\n" 7482 "\ta3\n" 7483 "};", 7484 Tab); 7485 EXPECT_EQ("if (aaaaaaaa && // q\n" 7486 " bb) // w\n" 7487 "\t;", 7488 format("if (aaaaaaaa &&// q\n" 7489 "bb)// w\n" 7490 ";", 7491 Tab)); 7492 verifyFormat("class X {\n" 7493 "\tvoid f() {\n" 7494 "\t\tsomeFunction(parameter1,\n" 7495 "\t\t parameter2);\n" 7496 "\t}\n" 7497 "};", 7498 Tab); 7499 verifyFormat("{\n" 7500 "\tQ({\n" 7501 "\t\t int a;\n" 7502 "\t\t someFunction(aaaaaaaaaa,\n" 7503 "\t\t bbbbbbbbb);\n" 7504 "\t },\n" 7505 "\t p);\n" 7506 "}", 7507 Tab); 7508 EXPECT_EQ("{\n" 7509 "\t/* aaaa\n" 7510 "\t bbbb */\n" 7511 "}", 7512 format("{\n" 7513 "/* aaaa\n" 7514 " bbbb */\n" 7515 "}", 7516 Tab)); 7517 EXPECT_EQ("{\n" 7518 "\t/*\n" 7519 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 7520 "\t bbbbbbbbbbbbb\n" 7521 "\t*/\n" 7522 "}", 7523 format("{\n" 7524 "/*\n" 7525 " aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 7526 "*/\n" 7527 "}", 7528 Tab)); 7529 EXPECT_EQ("{\n" 7530 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 7531 "\t// bbbbbbbbbbbbb\n" 7532 "}", 7533 format("{\n" 7534 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 7535 "}", 7536 Tab)); 7537 EXPECT_EQ("{\n" 7538 "\t/*\n" 7539 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 7540 "\t bbbbbbbbbbbbb\n" 7541 "\t*/\n" 7542 "}", 7543 format("{\n" 7544 "\t/*\n" 7545 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 7546 "\t*/\n" 7547 "}", 7548 Tab)); 7549 EXPECT_EQ("{\n" 7550 "\t/*\n" 7551 "\n" 7552 "\t*/\n" 7553 "}", 7554 format("{\n" 7555 "\t/*\n" 7556 "\n" 7557 "\t*/\n" 7558 "}", 7559 Tab)); 7560 EXPECT_EQ("{\n" 7561 "\t/*\n" 7562 " asdf\n" 7563 "\t*/\n" 7564 "}", 7565 format("{\n" 7566 "\t/*\n" 7567 " asdf\n" 7568 "\t*/\n" 7569 "}", 7570 Tab)); 7571 7572 Tab.UseTab = FormatStyle::UT_Never; 7573 EXPECT_EQ("/*\n" 7574 " a\t\tcomment\n" 7575 " in multiple lines\n" 7576 " */", 7577 format(" /*\t \t \n" 7578 " \t \t a\t\tcomment\t \t\n" 7579 " \t \t in multiple lines\t\n" 7580 " \t */", 7581 Tab)); 7582 EXPECT_EQ("/* some\n" 7583 " comment */", 7584 format(" \t \t /* some\n" 7585 " \t \t comment */", 7586 Tab)); 7587 EXPECT_EQ("int a; /* some\n" 7588 " comment */", 7589 format(" \t \t int a; /* some\n" 7590 " \t \t comment */", 7591 Tab)); 7592 7593 EXPECT_EQ("int a; /* some\n" 7594 "comment */", 7595 format(" \t \t int\ta; /* some\n" 7596 " \t \t comment */", 7597 Tab)); 7598 EXPECT_EQ("f(\"\t\t\"); /* some\n" 7599 " comment */", 7600 format(" \t \t f(\"\t\t\"); /* some\n" 7601 " \t \t comment */", 7602 Tab)); 7603 EXPECT_EQ("{\n" 7604 " /*\n" 7605 " * Comment\n" 7606 " */\n" 7607 " int i;\n" 7608 "}", 7609 format("{\n" 7610 "\t/*\n" 7611 "\t * Comment\n" 7612 "\t */\n" 7613 "\t int i;\n" 7614 "}")); 7615 } 7616 7617 TEST_F(FormatTest, CalculatesOriginalColumn) { 7618 EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 7619 "q\"; /* some\n" 7620 " comment */", 7621 format(" \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 7622 "q\"; /* some\n" 7623 " comment */", 7624 getLLVMStyle())); 7625 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 7626 "/* some\n" 7627 " comment */", 7628 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 7629 " /* some\n" 7630 " comment */", 7631 getLLVMStyle())); 7632 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 7633 "qqq\n" 7634 "/* some\n" 7635 " comment */", 7636 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 7637 "qqq\n" 7638 " /* some\n" 7639 " comment */", 7640 getLLVMStyle())); 7641 EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 7642 "wwww; /* some\n" 7643 " comment */", 7644 format(" inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 7645 "wwww; /* some\n" 7646 " comment */", 7647 getLLVMStyle())); 7648 } 7649 7650 TEST_F(FormatTest, ConfigurableSpaceBeforeParens) { 7651 FormatStyle NoSpace = getLLVMStyle(); 7652 NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never; 7653 7654 verifyFormat("while(true)\n" 7655 " continue;", NoSpace); 7656 verifyFormat("for(;;)\n" 7657 " continue;", NoSpace); 7658 verifyFormat("if(true)\n" 7659 " f();\n" 7660 "else if(true)\n" 7661 " f();", NoSpace); 7662 verifyFormat("do {\n" 7663 " do_something();\n" 7664 "} while(something());", NoSpace); 7665 verifyFormat("switch(x) {\n" 7666 "default:\n" 7667 " break;\n" 7668 "}", NoSpace); 7669 verifyFormat("auto i = std::make_unique<int>(5);", NoSpace); 7670 verifyFormat("size_t x = sizeof(x);", NoSpace); 7671 verifyFormat("auto f(int x) -> decltype(x);", NoSpace); 7672 verifyFormat("int f(T x) noexcept(x.create());", NoSpace); 7673 verifyFormat("alignas(128) char a[128];", NoSpace); 7674 verifyFormat("size_t x = alignof(MyType);", NoSpace); 7675 verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace); 7676 verifyFormat("int f() throw(Deprecated);", NoSpace); 7677 7678 FormatStyle Space = getLLVMStyle(); 7679 Space.SpaceBeforeParens = FormatStyle::SBPO_Always; 7680 7681 verifyFormat("int f ();", Space); 7682 verifyFormat("void f (int a, T b) {\n" 7683 " while (true)\n" 7684 " continue;\n" 7685 "}", 7686 Space); 7687 verifyFormat("if (true)\n" 7688 " f ();\n" 7689 "else if (true)\n" 7690 " f ();", 7691 Space); 7692 verifyFormat("do {\n" 7693 " do_something ();\n" 7694 "} while (something ());", 7695 Space); 7696 verifyFormat("switch (x) {\n" 7697 "default:\n" 7698 " break;\n" 7699 "}", 7700 Space); 7701 verifyFormat("A::A () : a (1) {}", Space); 7702 verifyFormat("void f () __attribute__ ((asdf));", Space); 7703 verifyFormat("*(&a + 1);\n" 7704 "&((&a)[1]);\n" 7705 "a[(b + c) * d];\n" 7706 "(((a + 1) * 2) + 3) * 4;", 7707 Space); 7708 verifyFormat("#define A(x) x", Space); 7709 verifyFormat("#define A (x) x", Space); 7710 verifyFormat("#if defined(x)\n" 7711 "#endif", 7712 Space); 7713 verifyFormat("auto i = std::make_unique<int> (5);", Space); 7714 verifyFormat("size_t x = sizeof (x);", Space); 7715 verifyFormat("auto f (int x) -> decltype (x);", Space); 7716 verifyFormat("int f (T x) noexcept (x.create ());", Space); 7717 verifyFormat("alignas (128) char a[128];", Space); 7718 verifyFormat("size_t x = alignof (MyType);", Space); 7719 verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space); 7720 verifyFormat("int f () throw (Deprecated);", Space); 7721 } 7722 7723 TEST_F(FormatTest, ConfigurableSpacesInParentheses) { 7724 FormatStyle Spaces = getLLVMStyle(); 7725 7726 Spaces.SpacesInParentheses = true; 7727 verifyFormat("call( x, y, z );", Spaces); 7728 verifyFormat("while ( (bool)1 )\n" 7729 " continue;", Spaces); 7730 verifyFormat("for ( ;; )\n" 7731 " continue;", Spaces); 7732 verifyFormat("if ( true )\n" 7733 " f();\n" 7734 "else if ( true )\n" 7735 " f();", Spaces); 7736 verifyFormat("do {\n" 7737 " do_something( (int)i );\n" 7738 "} while ( something() );", Spaces); 7739 verifyFormat("switch ( x ) {\n" 7740 "default:\n" 7741 " break;\n" 7742 "}", Spaces); 7743 7744 Spaces.SpacesInParentheses = false; 7745 Spaces.SpacesInCStyleCastParentheses = true; 7746 verifyFormat("Type *A = ( Type * )P;", Spaces); 7747 verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces); 7748 verifyFormat("x = ( int32 )y;", Spaces); 7749 verifyFormat("int a = ( int )(2.0f);", Spaces); 7750 verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces); 7751 verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces); 7752 verifyFormat("#define x (( int )-1)", Spaces); 7753 7754 Spaces.SpacesInParentheses = false; 7755 Spaces.SpaceInEmptyParentheses = true; 7756 verifyFormat("call(x, y, z);", Spaces); 7757 verifyFormat("call( )", Spaces); 7758 7759 // Run the first set of tests again with 7760 // Spaces.SpacesInParentheses = false, 7761 // Spaces.SpaceInEmptyParentheses = true and 7762 // Spaces.SpacesInCStyleCastParentheses = true 7763 Spaces.SpacesInParentheses = false, 7764 Spaces.SpaceInEmptyParentheses = true; 7765 Spaces.SpacesInCStyleCastParentheses = true; 7766 verifyFormat("call(x, y, z);", Spaces); 7767 verifyFormat("while (( bool )1)\n" 7768 " continue;", Spaces); 7769 verifyFormat("for (;;)\n" 7770 " continue;", Spaces); 7771 verifyFormat("if (true)\n" 7772 " f( );\n" 7773 "else if (true)\n" 7774 " f( );", Spaces); 7775 verifyFormat("do {\n" 7776 " do_something(( int )i);\n" 7777 "} while (something( ));", Spaces); 7778 verifyFormat("switch (x) {\n" 7779 "default:\n" 7780 " break;\n" 7781 "}", Spaces); 7782 7783 Spaces.SpaceAfterCStyleCast = true; 7784 verifyFormat("call(x, y, z);", Spaces); 7785 verifyFormat("while (( bool ) 1)\n" 7786 " continue;", 7787 Spaces); 7788 verifyFormat("for (;;)\n" 7789 " continue;", 7790 Spaces); 7791 verifyFormat("if (true)\n" 7792 " f( );\n" 7793 "else if (true)\n" 7794 " f( );", 7795 Spaces); 7796 verifyFormat("do {\n" 7797 " do_something(( int ) i);\n" 7798 "} while (something( ));", 7799 Spaces); 7800 verifyFormat("switch (x) {\n" 7801 "default:\n" 7802 " break;\n" 7803 "}", 7804 Spaces); 7805 Spaces.SpacesInCStyleCastParentheses = false; 7806 Spaces.SpaceAfterCStyleCast = true; 7807 verifyFormat("while ((bool) 1)\n" 7808 " continue;", 7809 Spaces); 7810 verifyFormat("do {\n" 7811 " do_something((int) i);\n" 7812 "} while (something( ));", 7813 Spaces); 7814 } 7815 7816 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) { 7817 verifyFormat("int a[5];"); 7818 verifyFormat("a[3] += 42;"); 7819 7820 FormatStyle Spaces = getLLVMStyle(); 7821 Spaces.SpacesInSquareBrackets = true; 7822 // Lambdas unchanged. 7823 verifyFormat("int c = []() -> int { return 2; }();\n", Spaces); 7824 verifyFormat("return [i, args...] {};", Spaces); 7825 7826 // Not lambdas. 7827 verifyFormat("int a[ 5 ];", Spaces); 7828 verifyFormat("a[ 3 ] += 42;", Spaces); 7829 verifyFormat("constexpr char hello[]{\"hello\"};", Spaces); 7830 verifyFormat("double &operator[](int i) { return 0; }\n" 7831 "int i;", 7832 Spaces); 7833 verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces); 7834 verifyFormat("int i = a[ a ][ a ]->f();", Spaces); 7835 verifyFormat("int i = (*b)[ a ]->f();", Spaces); 7836 } 7837 7838 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) { 7839 verifyFormat("int a = 5;"); 7840 verifyFormat("a += 42;"); 7841 verifyFormat("a or_eq 8;"); 7842 7843 FormatStyle Spaces = getLLVMStyle(); 7844 Spaces.SpaceBeforeAssignmentOperators = false; 7845 verifyFormat("int a= 5;", Spaces); 7846 verifyFormat("a+= 42;", Spaces); 7847 verifyFormat("a or_eq 8;", Spaces); 7848 } 7849 7850 TEST_F(FormatTest, LinuxBraceBreaking) { 7851 FormatStyle LinuxBraceStyle = getLLVMStyle(); 7852 LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux; 7853 verifyFormat("namespace a\n" 7854 "{\n" 7855 "class A\n" 7856 "{\n" 7857 " void f()\n" 7858 " {\n" 7859 " if (true) {\n" 7860 " a();\n" 7861 " b();\n" 7862 " }\n" 7863 " }\n" 7864 " void g() { return; }\n" 7865 "};\n" 7866 "struct B {\n" 7867 " int x;\n" 7868 "};\n" 7869 "}\n", 7870 LinuxBraceStyle); 7871 verifyFormat("enum X {\n" 7872 " Y = 0,\n" 7873 "}\n", 7874 LinuxBraceStyle); 7875 verifyFormat("struct S {\n" 7876 " int Type;\n" 7877 " union {\n" 7878 " int x;\n" 7879 " double y;\n" 7880 " } Value;\n" 7881 " class C\n" 7882 " {\n" 7883 " MyFavoriteType Value;\n" 7884 " } Class;\n" 7885 "}\n", 7886 LinuxBraceStyle); 7887 } 7888 7889 TEST_F(FormatTest, StroustrupBraceBreaking) { 7890 FormatStyle StroustrupBraceStyle = getLLVMStyle(); 7891 StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 7892 verifyFormat("namespace a {\n" 7893 "class A {\n" 7894 " void f()\n" 7895 " {\n" 7896 " if (true) {\n" 7897 " a();\n" 7898 " b();\n" 7899 " }\n" 7900 " }\n" 7901 " void g() { return; }\n" 7902 "};\n" 7903 "struct B {\n" 7904 " int x;\n" 7905 "};\n" 7906 "}\n", 7907 StroustrupBraceStyle); 7908 7909 verifyFormat("void foo()\n" 7910 "{\n" 7911 " if (a) {\n" 7912 " a();\n" 7913 " }\n" 7914 " else {\n" 7915 " b();\n" 7916 " }\n" 7917 "}\n", 7918 StroustrupBraceStyle); 7919 7920 verifyFormat("#ifdef _DEBUG\n" 7921 "int foo(int i = 0)\n" 7922 "#else\n" 7923 "int foo(int i = 5)\n" 7924 "#endif\n" 7925 "{\n" 7926 " return i;\n" 7927 "}", 7928 StroustrupBraceStyle); 7929 7930 verifyFormat("void foo() {}\n" 7931 "void bar()\n" 7932 "#ifdef _DEBUG\n" 7933 "{\n" 7934 " foo();\n" 7935 "}\n" 7936 "#else\n" 7937 "{\n" 7938 "}\n" 7939 "#endif", 7940 StroustrupBraceStyle); 7941 7942 verifyFormat("void foobar() { int i = 5; }\n" 7943 "#ifdef _DEBUG\n" 7944 "void bar() {}\n" 7945 "#else\n" 7946 "void bar() { foobar(); }\n" 7947 "#endif", 7948 StroustrupBraceStyle); 7949 } 7950 7951 TEST_F(FormatTest, AllmanBraceBreaking) { 7952 FormatStyle AllmanBraceStyle = getLLVMStyle(); 7953 AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman; 7954 verifyFormat("namespace a\n" 7955 "{\n" 7956 "class A\n" 7957 "{\n" 7958 " void f()\n" 7959 " {\n" 7960 " if (true)\n" 7961 " {\n" 7962 " a();\n" 7963 " b();\n" 7964 " }\n" 7965 " }\n" 7966 " void g() { return; }\n" 7967 "};\n" 7968 "struct B\n" 7969 "{\n" 7970 " int x;\n" 7971 "};\n" 7972 "}", 7973 AllmanBraceStyle); 7974 7975 verifyFormat("void f()\n" 7976 "{\n" 7977 " if (true)\n" 7978 " {\n" 7979 " a();\n" 7980 " }\n" 7981 " else if (false)\n" 7982 " {\n" 7983 " b();\n" 7984 " }\n" 7985 " else\n" 7986 " {\n" 7987 " c();\n" 7988 " }\n" 7989 "}\n", 7990 AllmanBraceStyle); 7991 7992 verifyFormat("void f()\n" 7993 "{\n" 7994 " for (int i = 0; i < 10; ++i)\n" 7995 " {\n" 7996 " a();\n" 7997 " }\n" 7998 " while (false)\n" 7999 " {\n" 8000 " b();\n" 8001 " }\n" 8002 " do\n" 8003 " {\n" 8004 " c();\n" 8005 " } while (false)\n" 8006 "}\n", 8007 AllmanBraceStyle); 8008 8009 verifyFormat("void f(int a)\n" 8010 "{\n" 8011 " switch (a)\n" 8012 " {\n" 8013 " case 0:\n" 8014 " break;\n" 8015 " case 1:\n" 8016 " {\n" 8017 " break;\n" 8018 " }\n" 8019 " case 2:\n" 8020 " {\n" 8021 " }\n" 8022 " break;\n" 8023 " default:\n" 8024 " break;\n" 8025 " }\n" 8026 "}\n", 8027 AllmanBraceStyle); 8028 8029 verifyFormat("enum X\n" 8030 "{\n" 8031 " Y = 0,\n" 8032 "}\n", 8033 AllmanBraceStyle); 8034 verifyFormat("enum X\n" 8035 "{\n" 8036 " Y = 0\n" 8037 "}\n", 8038 AllmanBraceStyle); 8039 8040 verifyFormat("@interface BSApplicationController ()\n" 8041 "{\n" 8042 "@private\n" 8043 " id _extraIvar;\n" 8044 "}\n" 8045 "@end\n", 8046 AllmanBraceStyle); 8047 8048 verifyFormat("#ifdef _DEBUG\n" 8049 "int foo(int i = 0)\n" 8050 "#else\n" 8051 "int foo(int i = 5)\n" 8052 "#endif\n" 8053 "{\n" 8054 " return i;\n" 8055 "}", 8056 AllmanBraceStyle); 8057 8058 verifyFormat("void foo() {}\n" 8059 "void bar()\n" 8060 "#ifdef _DEBUG\n" 8061 "{\n" 8062 " foo();\n" 8063 "}\n" 8064 "#else\n" 8065 "{\n" 8066 "}\n" 8067 "#endif", 8068 AllmanBraceStyle); 8069 8070 verifyFormat("void foobar() { int i = 5; }\n" 8071 "#ifdef _DEBUG\n" 8072 "void bar() {}\n" 8073 "#else\n" 8074 "void bar() { foobar(); }\n" 8075 "#endif", 8076 AllmanBraceStyle); 8077 8078 // This shouldn't affect ObjC blocks.. 8079 verifyFormat("[self doSomeThingWithACompletionHandler:^{\n" 8080 " // ...\n" 8081 " int i;\n" 8082 "}];", 8083 AllmanBraceStyle); 8084 verifyFormat("void (^block)(void) = ^{\n" 8085 " // ...\n" 8086 " int i;\n" 8087 "};", 8088 AllmanBraceStyle); 8089 // .. or dict literals. 8090 verifyFormat("void f()\n" 8091 "{\n" 8092 " [object someMethod:@{ @\"a\" : @\"b\" }];\n" 8093 "}", 8094 AllmanBraceStyle); 8095 8096 AllmanBraceStyle.ColumnLimit = 19; 8097 verifyFormat("void f() { int i; }", AllmanBraceStyle); 8098 AllmanBraceStyle.ColumnLimit = 18; 8099 verifyFormat("void f()\n" 8100 "{\n" 8101 " int i;\n" 8102 "}", 8103 AllmanBraceStyle); 8104 AllmanBraceStyle.ColumnLimit = 80; 8105 8106 FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle; 8107 BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine = true; 8108 BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true; 8109 verifyFormat("void f(bool b)\n" 8110 "{\n" 8111 " if (b)\n" 8112 " {\n" 8113 " return;\n" 8114 " }\n" 8115 "}\n", 8116 BreakBeforeBraceShortIfs); 8117 verifyFormat("void f(bool b)\n" 8118 "{\n" 8119 " if (b) return;\n" 8120 "}\n", 8121 BreakBeforeBraceShortIfs); 8122 verifyFormat("void f(bool b)\n" 8123 "{\n" 8124 " while (b)\n" 8125 " {\n" 8126 " return;\n" 8127 " }\n" 8128 "}\n", 8129 BreakBeforeBraceShortIfs); 8130 } 8131 8132 TEST_F(FormatTest, GNUBraceBreaking) { 8133 FormatStyle GNUBraceStyle = getLLVMStyle(); 8134 GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU; 8135 verifyFormat("namespace a\n" 8136 "{\n" 8137 "class A\n" 8138 "{\n" 8139 " void f()\n" 8140 " {\n" 8141 " int a;\n" 8142 " {\n" 8143 " int b;\n" 8144 " }\n" 8145 " if (true)\n" 8146 " {\n" 8147 " a();\n" 8148 " b();\n" 8149 " }\n" 8150 " }\n" 8151 " void g() { return; }\n" 8152 "}\n" 8153 "}", 8154 GNUBraceStyle); 8155 8156 verifyFormat("void f()\n" 8157 "{\n" 8158 " if (true)\n" 8159 " {\n" 8160 " a();\n" 8161 " }\n" 8162 " else if (false)\n" 8163 " {\n" 8164 " b();\n" 8165 " }\n" 8166 " else\n" 8167 " {\n" 8168 " c();\n" 8169 " }\n" 8170 "}\n", 8171 GNUBraceStyle); 8172 8173 verifyFormat("void f()\n" 8174 "{\n" 8175 " for (int i = 0; i < 10; ++i)\n" 8176 " {\n" 8177 " a();\n" 8178 " }\n" 8179 " while (false)\n" 8180 " {\n" 8181 " b();\n" 8182 " }\n" 8183 " do\n" 8184 " {\n" 8185 " c();\n" 8186 " }\n" 8187 " while (false);\n" 8188 "}\n", 8189 GNUBraceStyle); 8190 8191 verifyFormat("void f(int a)\n" 8192 "{\n" 8193 " switch (a)\n" 8194 " {\n" 8195 " case 0:\n" 8196 " break;\n" 8197 " case 1:\n" 8198 " {\n" 8199 " break;\n" 8200 " }\n" 8201 " case 2:\n" 8202 " {\n" 8203 " }\n" 8204 " break;\n" 8205 " default:\n" 8206 " break;\n" 8207 " }\n" 8208 "}\n", 8209 GNUBraceStyle); 8210 8211 verifyFormat("enum X\n" 8212 "{\n" 8213 " Y = 0,\n" 8214 "}\n", 8215 GNUBraceStyle); 8216 8217 verifyFormat("@interface BSApplicationController ()\n" 8218 "{\n" 8219 "@private\n" 8220 " id _extraIvar;\n" 8221 "}\n" 8222 "@end\n", 8223 GNUBraceStyle); 8224 8225 verifyFormat("#ifdef _DEBUG\n" 8226 "int foo(int i = 0)\n" 8227 "#else\n" 8228 "int foo(int i = 5)\n" 8229 "#endif\n" 8230 "{\n" 8231 " return i;\n" 8232 "}", 8233 GNUBraceStyle); 8234 8235 verifyFormat("void foo() {}\n" 8236 "void bar()\n" 8237 "#ifdef _DEBUG\n" 8238 "{\n" 8239 " foo();\n" 8240 "}\n" 8241 "#else\n" 8242 "{\n" 8243 "}\n" 8244 "#endif", 8245 GNUBraceStyle); 8246 8247 verifyFormat("void foobar() { int i = 5; }\n" 8248 "#ifdef _DEBUG\n" 8249 "void bar() {}\n" 8250 "#else\n" 8251 "void bar() { foobar(); }\n" 8252 "#endif", 8253 GNUBraceStyle); 8254 } 8255 TEST_F(FormatTest, CatchExceptionReferenceBinding) { 8256 verifyFormat("void f() {\n" 8257 " try {\n" 8258 " } catch (const Exception &e) {\n" 8259 " }\n" 8260 "}\n", 8261 getLLVMStyle()); 8262 } 8263 8264 TEST_F(FormatTest, UnderstandsPragmas) { 8265 verifyFormat("#pragma omp reduction(| : var)"); 8266 verifyFormat("#pragma omp reduction(+ : var)"); 8267 8268 EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string " 8269 "(including parentheses).", 8270 format("#pragma mark Any non-hyphenated or hyphenated string " 8271 "(including parentheses).")); 8272 } 8273 8274 #define EXPECT_ALL_STYLES_EQUAL(Styles) \ 8275 for (size_t i = 1; i < Styles.size(); ++i) \ 8276 EXPECT_EQ(Styles[0], Styles[i]) << "Style #" << i << " of " \ 8277 << Styles.size() \ 8278 << " differs from Style #0" 8279 8280 TEST_F(FormatTest, GetsPredefinedStyleByName) { 8281 SmallVector<FormatStyle, 3> Styles; 8282 Styles.resize(3); 8283 8284 Styles[0] = getLLVMStyle(); 8285 EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1])); 8286 EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2])); 8287 EXPECT_ALL_STYLES_EQUAL(Styles); 8288 8289 Styles[0] = getGoogleStyle(); 8290 EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1])); 8291 EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2])); 8292 EXPECT_ALL_STYLES_EQUAL(Styles); 8293 8294 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 8295 EXPECT_TRUE( 8296 getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1])); 8297 EXPECT_TRUE( 8298 getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2])); 8299 EXPECT_ALL_STYLES_EQUAL(Styles); 8300 8301 Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp); 8302 EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1])); 8303 EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2])); 8304 EXPECT_ALL_STYLES_EQUAL(Styles); 8305 8306 Styles[0] = getMozillaStyle(); 8307 EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1])); 8308 EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2])); 8309 EXPECT_ALL_STYLES_EQUAL(Styles); 8310 8311 Styles[0] = getWebKitStyle(); 8312 EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1])); 8313 EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2])); 8314 EXPECT_ALL_STYLES_EQUAL(Styles); 8315 8316 Styles[0] = getGNUStyle(); 8317 EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1])); 8318 EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2])); 8319 EXPECT_ALL_STYLES_EQUAL(Styles); 8320 8321 EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0])); 8322 } 8323 8324 TEST_F(FormatTest, GetsCorrectBasedOnStyle) { 8325 SmallVector<FormatStyle, 8> Styles; 8326 Styles.resize(2); 8327 8328 Styles[0] = getGoogleStyle(); 8329 Styles[1] = getLLVMStyle(); 8330 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 8331 EXPECT_ALL_STYLES_EQUAL(Styles); 8332 8333 Styles.resize(5); 8334 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 8335 Styles[1] = getLLVMStyle(); 8336 Styles[1].Language = FormatStyle::LK_JavaScript; 8337 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 8338 8339 Styles[2] = getLLVMStyle(); 8340 Styles[2].Language = FormatStyle::LK_JavaScript; 8341 EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n" 8342 "BasedOnStyle: Google", 8343 &Styles[2]).value()); 8344 8345 Styles[3] = getLLVMStyle(); 8346 Styles[3].Language = FormatStyle::LK_JavaScript; 8347 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n" 8348 "Language: JavaScript", 8349 &Styles[3]).value()); 8350 8351 Styles[4] = getLLVMStyle(); 8352 Styles[4].Language = FormatStyle::LK_JavaScript; 8353 EXPECT_EQ(0, parseConfiguration("---\n" 8354 "BasedOnStyle: LLVM\n" 8355 "IndentWidth: 123\n" 8356 "---\n" 8357 "BasedOnStyle: Google\n" 8358 "Language: JavaScript", 8359 &Styles[4]).value()); 8360 EXPECT_ALL_STYLES_EQUAL(Styles); 8361 } 8362 8363 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME) \ 8364 Style.FIELD = false; \ 8365 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value()); \ 8366 EXPECT_TRUE(Style.FIELD); \ 8367 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value()); \ 8368 EXPECT_FALSE(Style.FIELD); 8369 8370 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD) 8371 8372 #define CHECK_PARSE(TEXT, FIELD, VALUE) \ 8373 EXPECT_NE(VALUE, Style.FIELD); \ 8374 EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value()); \ 8375 EXPECT_EQ(VALUE, Style.FIELD) 8376 8377 TEST_F(FormatTest, ParsesConfigurationBools) { 8378 FormatStyle Style = {}; 8379 Style.Language = FormatStyle::LK_Cpp; 8380 CHECK_PARSE_BOOL(AlignEscapedNewlinesLeft); 8381 CHECK_PARSE_BOOL(AlignTrailingComments); 8382 CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine); 8383 CHECK_PARSE_BOOL(AllowShortBlocksOnASingleLine); 8384 CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine); 8385 CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine); 8386 CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine); 8387 CHECK_PARSE_BOOL(AlwaysBreakAfterDefinitionReturnType); 8388 CHECK_PARSE_BOOL(AlwaysBreakTemplateDeclarations); 8389 CHECK_PARSE_BOOL(BinPackParameters); 8390 CHECK_PARSE_BOOL(BreakBeforeTernaryOperators); 8391 CHECK_PARSE_BOOL(BreakConstructorInitializersBeforeComma); 8392 CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine); 8393 CHECK_PARSE_BOOL(DerivePointerAlignment); 8394 CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding"); 8395 CHECK_PARSE_BOOL(IndentCaseLabels); 8396 CHECK_PARSE_BOOL(IndentWrappedFunctionNames); 8397 CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks); 8398 CHECK_PARSE_BOOL(ObjCSpaceAfterProperty); 8399 CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList); 8400 CHECK_PARSE_BOOL(Cpp11BracedListStyle); 8401 CHECK_PARSE_BOOL(SpacesInParentheses); 8402 CHECK_PARSE_BOOL(SpacesInSquareBrackets); 8403 CHECK_PARSE_BOOL(SpacesInAngles); 8404 CHECK_PARSE_BOOL(SpaceInEmptyParentheses); 8405 CHECK_PARSE_BOOL(SpacesInContainerLiterals); 8406 CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses); 8407 CHECK_PARSE_BOOL(SpaceAfterCStyleCast); 8408 CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators); 8409 } 8410 8411 #undef CHECK_PARSE_BOOL 8412 8413 TEST_F(FormatTest, ParsesConfiguration) { 8414 FormatStyle Style = {}; 8415 Style.Language = FormatStyle::LK_Cpp; 8416 CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234); 8417 CHECK_PARSE("ConstructorInitializerIndentWidth: 1234", 8418 ConstructorInitializerIndentWidth, 1234u); 8419 CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u); 8420 CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u); 8421 CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234", 8422 PenaltyBreakBeforeFirstCallParameter, 1234u); 8423 CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u); 8424 CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234", 8425 PenaltyReturnTypeOnItsOwnLine, 1234u); 8426 CHECK_PARSE("SpacesBeforeTrailingComments: 1234", 8427 SpacesBeforeTrailingComments, 1234u); 8428 CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u); 8429 CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u); 8430 8431 Style.PointerAlignment = FormatStyle::PAS_Middle; 8432 CHECK_PARSE("PointerAlignment: Left", PointerAlignment, 8433 FormatStyle::PAS_Left); 8434 CHECK_PARSE("PointerAlignment: Right", PointerAlignment, 8435 FormatStyle::PAS_Right); 8436 CHECK_PARSE("PointerAlignment: Middle", PointerAlignment, 8437 FormatStyle::PAS_Middle); 8438 // For backward compatibility: 8439 CHECK_PARSE("PointerBindsToType: Left", PointerAlignment, 8440 FormatStyle::PAS_Left); 8441 CHECK_PARSE("PointerBindsToType: Right", PointerAlignment, 8442 FormatStyle::PAS_Right); 8443 CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment, 8444 FormatStyle::PAS_Middle); 8445 8446 Style.Standard = FormatStyle::LS_Auto; 8447 CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03); 8448 CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Cpp11); 8449 CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03); 8450 CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11); 8451 CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto); 8452 8453 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 8454 CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment", 8455 BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment); 8456 CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators, 8457 FormatStyle::BOS_None); 8458 CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators, 8459 FormatStyle::BOS_All); 8460 // For backward compatibility: 8461 CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators, 8462 FormatStyle::BOS_None); 8463 CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators, 8464 FormatStyle::BOS_All); 8465 8466 Style.UseTab = FormatStyle::UT_ForIndentation; 8467 CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never); 8468 CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation); 8469 CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always); 8470 // For backward compatibility: 8471 CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never); 8472 CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always); 8473 8474 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 8475 CHECK_PARSE("AllowShortFunctionsOnASingleLine: None", 8476 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 8477 CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline", 8478 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline); 8479 CHECK_PARSE("AllowShortFunctionsOnASingleLine: All", 8480 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 8481 // For backward compatibility: 8482 CHECK_PARSE("AllowShortFunctionsOnASingleLine: false", 8483 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 8484 CHECK_PARSE("AllowShortFunctionsOnASingleLine: true", 8485 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 8486 8487 Style.SpaceBeforeParens = FormatStyle::SBPO_Always; 8488 CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens, 8489 FormatStyle::SBPO_Never); 8490 CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens, 8491 FormatStyle::SBPO_Always); 8492 CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens, 8493 FormatStyle::SBPO_ControlStatements); 8494 // For backward compatibility: 8495 CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens, 8496 FormatStyle::SBPO_Never); 8497 CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens, 8498 FormatStyle::SBPO_ControlStatements); 8499 8500 Style.ColumnLimit = 123; 8501 FormatStyle BaseStyle = getLLVMStyle(); 8502 CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit); 8503 CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u); 8504 8505 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 8506 CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces, 8507 FormatStyle::BS_Attach); 8508 CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces, 8509 FormatStyle::BS_Linux); 8510 CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces, 8511 FormatStyle::BS_Stroustrup); 8512 CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces, 8513 FormatStyle::BS_Allman); 8514 CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU); 8515 8516 Style.NamespaceIndentation = FormatStyle::NI_All; 8517 CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation, 8518 FormatStyle::NI_None); 8519 CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation, 8520 FormatStyle::NI_Inner); 8521 CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation, 8522 FormatStyle::NI_All); 8523 8524 Style.ForEachMacros.clear(); 8525 std::vector<std::string> BoostForeach; 8526 BoostForeach.push_back("BOOST_FOREACH"); 8527 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach); 8528 std::vector<std::string> BoostAndQForeach; 8529 BoostAndQForeach.push_back("BOOST_FOREACH"); 8530 BoostAndQForeach.push_back("Q_FOREACH"); 8531 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros, 8532 BoostAndQForeach); 8533 } 8534 8535 TEST_F(FormatTest, ParsesConfigurationWithLanguages) { 8536 FormatStyle Style = {}; 8537 Style.Language = FormatStyle::LK_Cpp; 8538 CHECK_PARSE("Language: Cpp\n" 8539 "IndentWidth: 12", 8540 IndentWidth, 12u); 8541 EXPECT_EQ(parseConfiguration("Language: JavaScript\n" 8542 "IndentWidth: 34", 8543 &Style), 8544 ParseError::Unsuitable); 8545 EXPECT_EQ(12u, Style.IndentWidth); 8546 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 8547 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 8548 8549 Style.Language = FormatStyle::LK_JavaScript; 8550 CHECK_PARSE("Language: JavaScript\n" 8551 "IndentWidth: 12", 8552 IndentWidth, 12u); 8553 CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u); 8554 EXPECT_EQ(parseConfiguration("Language: Cpp\n" 8555 "IndentWidth: 34", 8556 &Style), 8557 ParseError::Unsuitable); 8558 EXPECT_EQ(23u, Style.IndentWidth); 8559 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 8560 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 8561 8562 CHECK_PARSE("BasedOnStyle: LLVM\n" 8563 "IndentWidth: 67", 8564 IndentWidth, 67u); 8565 8566 CHECK_PARSE("---\n" 8567 "Language: JavaScript\n" 8568 "IndentWidth: 12\n" 8569 "---\n" 8570 "Language: Cpp\n" 8571 "IndentWidth: 34\n" 8572 "...\n", 8573 IndentWidth, 12u); 8574 8575 Style.Language = FormatStyle::LK_Cpp; 8576 CHECK_PARSE("---\n" 8577 "Language: JavaScript\n" 8578 "IndentWidth: 12\n" 8579 "---\n" 8580 "Language: Cpp\n" 8581 "IndentWidth: 34\n" 8582 "...\n", 8583 IndentWidth, 34u); 8584 CHECK_PARSE("---\n" 8585 "IndentWidth: 78\n" 8586 "---\n" 8587 "Language: JavaScript\n" 8588 "IndentWidth: 56\n" 8589 "...\n", 8590 IndentWidth, 78u); 8591 8592 Style.ColumnLimit = 123; 8593 Style.IndentWidth = 234; 8594 Style.BreakBeforeBraces = FormatStyle::BS_Linux; 8595 Style.TabWidth = 345; 8596 EXPECT_FALSE(parseConfiguration("---\n" 8597 "IndentWidth: 456\n" 8598 "BreakBeforeBraces: Allman\n" 8599 "---\n" 8600 "Language: JavaScript\n" 8601 "IndentWidth: 111\n" 8602 "TabWidth: 111\n" 8603 "---\n" 8604 "Language: Cpp\n" 8605 "BreakBeforeBraces: Stroustrup\n" 8606 "TabWidth: 789\n" 8607 "...\n", 8608 &Style)); 8609 EXPECT_EQ(123u, Style.ColumnLimit); 8610 EXPECT_EQ(456u, Style.IndentWidth); 8611 EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces); 8612 EXPECT_EQ(789u, Style.TabWidth); 8613 8614 EXPECT_EQ(parseConfiguration("---\n" 8615 "Language: JavaScript\n" 8616 "IndentWidth: 56\n" 8617 "---\n" 8618 "IndentWidth: 78\n" 8619 "...\n", 8620 &Style), 8621 ParseError::Error); 8622 EXPECT_EQ(parseConfiguration("---\n" 8623 "Language: JavaScript\n" 8624 "IndentWidth: 56\n" 8625 "---\n" 8626 "Language: JavaScript\n" 8627 "IndentWidth: 78\n" 8628 "...\n", 8629 &Style), 8630 ParseError::Error); 8631 8632 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 8633 } 8634 8635 #undef CHECK_PARSE 8636 8637 TEST_F(FormatTest, UsesLanguageForBasedOnStyle) { 8638 FormatStyle Style = {}; 8639 Style.Language = FormatStyle::LK_JavaScript; 8640 Style.BreakBeforeTernaryOperators = true; 8641 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value()); 8642 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 8643 8644 Style.BreakBeforeTernaryOperators = true; 8645 EXPECT_EQ(0, parseConfiguration("---\n" 8646 "BasedOnStyle: Google\n" 8647 "---\n" 8648 "Language: JavaScript\n" 8649 "IndentWidth: 76\n" 8650 "...\n", &Style).value()); 8651 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 8652 EXPECT_EQ(76u, Style.IndentWidth); 8653 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 8654 } 8655 8656 TEST_F(FormatTest, ConfigurationRoundTripTest) { 8657 FormatStyle Style = getLLVMStyle(); 8658 std::string YAML = configurationAsText(Style); 8659 FormatStyle ParsedStyle = {}; 8660 ParsedStyle.Language = FormatStyle::LK_Cpp; 8661 EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value()); 8662 EXPECT_EQ(Style, ParsedStyle); 8663 } 8664 8665 TEST_F(FormatTest, WorksFor8bitEncodings) { 8666 EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n" 8667 "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n" 8668 "\"\xe7\xe8\xec\xed\xfe\xfe \"\n" 8669 "\"\xef\xee\xf0\xf3...\"", 8670 format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 " 8671 "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe " 8672 "\xef\xee\xf0\xf3...\"", 8673 getLLVMStyleWithColumns(12))); 8674 } 8675 8676 TEST_F(FormatTest, HandlesUTF8BOM) { 8677 EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf")); 8678 EXPECT_EQ("\xef\xbb\xbf#include <iostream>", 8679 format("\xef\xbb\xbf#include <iostream>")); 8680 EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>", 8681 format("\xef\xbb\xbf\n#include <iostream>")); 8682 } 8683 8684 // FIXME: Encode Cyrillic and CJK characters below to appease MS compilers. 8685 #if !defined(_MSC_VER) 8686 8687 TEST_F(FormatTest, CountsUTF8CharactersProperly) { 8688 verifyFormat("\"Однажды в студёную зимнюю пору...\"", 8689 getLLVMStyleWithColumns(35)); 8690 verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"", 8691 getLLVMStyleWithColumns(31)); 8692 verifyFormat("// Однажды в студёную зимнюю пору...", 8693 getLLVMStyleWithColumns(36)); 8694 verifyFormat("// 一 二 三 四 五 六 七 八 九 十", 8695 getLLVMStyleWithColumns(32)); 8696 verifyFormat("/* Однажды в студёную зимнюю пору... */", 8697 getLLVMStyleWithColumns(39)); 8698 verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */", 8699 getLLVMStyleWithColumns(35)); 8700 } 8701 8702 TEST_F(FormatTest, SplitsUTF8Strings) { 8703 // Non-printable characters' width is currently considered to be the length in 8704 // bytes in UTF8. The characters can be displayed in very different manner 8705 // (zero-width, single width with a substitution glyph, expanded to their code 8706 // (e.g. "<8d>"), so there's no single correct way to handle them. 8707 EXPECT_EQ("\"aaaaÄ\"\n" 8708 "\"\xc2\x8d\";", 8709 format("\"aaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10))); 8710 EXPECT_EQ("\"aaaaaaaÄ\"\n" 8711 "\"\xc2\x8d\";", 8712 format("\"aaaaaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10))); 8713 EXPECT_EQ( 8714 "\"Однажды, в \"\n" 8715 "\"студёную \"\n" 8716 "\"зимнюю \"\n" 8717 "\"пору,\"", 8718 format("\"Однажды, в студёную зимнюю пору,\"", 8719 getLLVMStyleWithColumns(13))); 8720 EXPECT_EQ("\"一 二 三 \"\n" 8721 "\"四 五六 \"\n" 8722 "\"七 八 九 \"\n" 8723 "\"十\"", 8724 format("\"一 二 三 四 五六 七 八 九 十\"", 8725 getLLVMStyleWithColumns(11))); 8726 EXPECT_EQ("\"一\t二 \"\n" 8727 "\"\t三 \"\n" 8728 "\"四 五\t六 \"\n" 8729 "\"\t七 \"\n" 8730 "\"八九十\tqq\"", 8731 format("\"一\t二 \t三 四 五\t六 \t七 八九十\tqq\"", 8732 getLLVMStyleWithColumns(11))); 8733 } 8734 8735 8736 TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) { 8737 EXPECT_EQ("const char *sssss =\n" 8738 " \"一二三四五六七八\\\n" 8739 " 九 十\";", 8740 format("const char *sssss = \"一二三四五六七八\\\n" 8741 " 九 十\";", 8742 getLLVMStyleWithColumns(30))); 8743 } 8744 8745 TEST_F(FormatTest, SplitsUTF8LineComments) { 8746 EXPECT_EQ("// aaaaÄ\xc2\x8d", 8747 format("// aaaaÄ\xc2\x8d", getLLVMStyleWithColumns(10))); 8748 EXPECT_EQ("// Я из лесу\n" 8749 "// вышел; был\n" 8750 "// сильный\n" 8751 "// мороз.", 8752 format("// Я из лесу вышел; был сильный мороз.", 8753 getLLVMStyleWithColumns(13))); 8754 EXPECT_EQ("// 一二三\n" 8755 "// 四五六七\n" 8756 "// 八 九\n" 8757 "// 十", 8758 format("// 一二三 四五六七 八 九 十", getLLVMStyleWithColumns(9))); 8759 } 8760 8761 TEST_F(FormatTest, SplitsUTF8BlockComments) { 8762 EXPECT_EQ("/* Гляжу,\n" 8763 " * поднимается\n" 8764 " * медленно в\n" 8765 " * гору\n" 8766 " * Лошадка,\n" 8767 " * везущая\n" 8768 " * хворосту\n" 8769 " * воз. */", 8770 format("/* Гляжу, поднимается медленно в гору\n" 8771 " * Лошадка, везущая хворосту воз. */", 8772 getLLVMStyleWithColumns(13))); 8773 EXPECT_EQ( 8774 "/* 一二三\n" 8775 " * 四五六七\n" 8776 " * 八 九\n" 8777 " * 十 */", 8778 format("/* 一二三 四五六七 八 九 十 */", getLLVMStyleWithColumns(9))); 8779 EXPECT_EQ("/* �������� ��������\n" 8780 " * ��������\n" 8781 " * ������-�� */", 8782 format("/* �������� �������� �������� ������-�� */", getLLVMStyleWithColumns(12))); 8783 } 8784 8785 #endif // _MSC_VER 8786 8787 TEST_F(FormatTest, ConstructorInitializerIndentWidth) { 8788 FormatStyle Style = getLLVMStyle(); 8789 8790 Style.ConstructorInitializerIndentWidth = 4; 8791 verifyFormat( 8792 "SomeClass::Constructor()\n" 8793 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 8794 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 8795 Style); 8796 8797 Style.ConstructorInitializerIndentWidth = 2; 8798 verifyFormat( 8799 "SomeClass::Constructor()\n" 8800 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 8801 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 8802 Style); 8803 8804 Style.ConstructorInitializerIndentWidth = 0; 8805 verifyFormat( 8806 "SomeClass::Constructor()\n" 8807 ": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 8808 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 8809 Style); 8810 } 8811 8812 TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) { 8813 FormatStyle Style = getLLVMStyle(); 8814 Style.BreakConstructorInitializersBeforeComma = true; 8815 Style.ConstructorInitializerIndentWidth = 4; 8816 verifyFormat("SomeClass::Constructor()\n" 8817 " : a(a)\n" 8818 " , b(b)\n" 8819 " , c(c) {}", 8820 Style); 8821 verifyFormat("SomeClass::Constructor()\n" 8822 " : a(a) {}", 8823 Style); 8824 8825 Style.ColumnLimit = 0; 8826 verifyFormat("SomeClass::Constructor()\n" 8827 " : a(a) {}", 8828 Style); 8829 verifyFormat("SomeClass::Constructor()\n" 8830 " : a(a)\n" 8831 " , b(b)\n" 8832 " , c(c) {}", 8833 Style); 8834 verifyFormat("SomeClass::Constructor()\n" 8835 " : a(a) {\n" 8836 " foo();\n" 8837 " bar();\n" 8838 "}", 8839 Style); 8840 8841 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 8842 verifyFormat("SomeClass::Constructor()\n" 8843 " : a(a)\n" 8844 " , b(b)\n" 8845 " , c(c) {\n}", 8846 Style); 8847 verifyFormat("SomeClass::Constructor()\n" 8848 " : a(a) {\n}", 8849 Style); 8850 8851 Style.ColumnLimit = 80; 8852 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 8853 Style.ConstructorInitializerIndentWidth = 2; 8854 verifyFormat("SomeClass::Constructor()\n" 8855 " : a(a)\n" 8856 " , b(b)\n" 8857 " , c(c) {}", 8858 Style); 8859 8860 Style.ConstructorInitializerIndentWidth = 0; 8861 verifyFormat("SomeClass::Constructor()\n" 8862 ": a(a)\n" 8863 ", b(b)\n" 8864 ", c(c) {}", 8865 Style); 8866 8867 Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 8868 Style.ConstructorInitializerIndentWidth = 4; 8869 verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style); 8870 verifyFormat( 8871 "SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n", 8872 Style); 8873 verifyFormat( 8874 "SomeClass::Constructor()\n" 8875 " : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}", 8876 Style); 8877 Style.ConstructorInitializerIndentWidth = 4; 8878 Style.ColumnLimit = 60; 8879 verifyFormat("SomeClass::Constructor()\n" 8880 " : aaaaaaaa(aaaaaaaa)\n" 8881 " , aaaaaaaa(aaaaaaaa)\n" 8882 " , aaaaaaaa(aaaaaaaa) {}", 8883 Style); 8884 } 8885 8886 TEST_F(FormatTest, FormatsWithWebKitStyle) { 8887 FormatStyle Style = getWebKitStyle(); 8888 8889 // Don't indent in outer namespaces. 8890 verifyFormat("namespace outer {\n" 8891 "int i;\n" 8892 "namespace inner {\n" 8893 " int i;\n" 8894 "} // namespace inner\n" 8895 "} // namespace outer\n" 8896 "namespace other_outer {\n" 8897 "int i;\n" 8898 "}", 8899 Style); 8900 8901 // Don't indent case labels. 8902 verifyFormat("switch (variable) {\n" 8903 "case 1:\n" 8904 "case 2:\n" 8905 " doSomething();\n" 8906 " break;\n" 8907 "default:\n" 8908 " ++variable;\n" 8909 "}", 8910 Style); 8911 8912 // Wrap before binary operators. 8913 EXPECT_EQ( 8914 "void f()\n" 8915 "{\n" 8916 " if (aaaaaaaaaaaaaaaa\n" 8917 " && bbbbbbbbbbbbbbbbbbbbbbbb\n" 8918 " && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 8919 " return;\n" 8920 "}", 8921 format( 8922 "void f() {\n" 8923 "if (aaaaaaaaaaaaaaaa\n" 8924 "&& bbbbbbbbbbbbbbbbbbbbbbbb\n" 8925 "&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 8926 "return;\n" 8927 "}", 8928 Style)); 8929 8930 // Allow functions on a single line. 8931 verifyFormat("void f() { return; }", Style); 8932 8933 // Constructor initializers are formatted one per line with the "," on the 8934 // new line. 8935 verifyFormat("Constructor()\n" 8936 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 8937 " , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n" 8938 " aaaaaaaaaaaaaa)\n" 8939 " , aaaaaaaaaaaaaaaaaaaaaaa()\n" 8940 "{\n" 8941 "}", 8942 Style); 8943 verifyFormat("SomeClass::Constructor()\n" 8944 " : a(a)\n" 8945 "{\n" 8946 "}", 8947 Style); 8948 EXPECT_EQ("SomeClass::Constructor()\n" 8949 " : a(a)\n" 8950 "{\n" 8951 "}", 8952 format("SomeClass::Constructor():a(a){}", Style)); 8953 verifyFormat("SomeClass::Constructor()\n" 8954 " : a(a)\n" 8955 " , b(b)\n" 8956 " , c(c)\n" 8957 "{\n" 8958 "}", Style); 8959 verifyFormat("SomeClass::Constructor()\n" 8960 " : a(a)\n" 8961 "{\n" 8962 " foo();\n" 8963 " bar();\n" 8964 "}", 8965 Style); 8966 8967 // Access specifiers should be aligned left. 8968 verifyFormat("class C {\n" 8969 "public:\n" 8970 " int i;\n" 8971 "};", 8972 Style); 8973 8974 // Do not align comments. 8975 verifyFormat("int a; // Do not\n" 8976 "double b; // align comments.", 8977 Style); 8978 8979 // Accept input's line breaks. 8980 EXPECT_EQ("if (aaaaaaaaaaaaaaa\n" 8981 " || bbbbbbbbbbbbbbb) {\n" 8982 " i++;\n" 8983 "}", 8984 format("if (aaaaaaaaaaaaaaa\n" 8985 "|| bbbbbbbbbbbbbbb) { i++; }", 8986 Style)); 8987 EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n" 8988 " i++;\n" 8989 "}", 8990 format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style)); 8991 8992 // Don't automatically break all macro definitions (llvm.org/PR17842). 8993 verifyFormat("#define aNumber 10", Style); 8994 // However, generally keep the line breaks that the user authored. 8995 EXPECT_EQ("#define aNumber \\\n" 8996 " 10", 8997 format("#define aNumber \\\n" 8998 " 10", 8999 Style)); 9000 9001 // Keep empty and one-element array literals on a single line. 9002 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n" 9003 " copyItems:YES];", 9004 format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n" 9005 "copyItems:YES];", 9006 Style)); 9007 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n" 9008 " copyItems:YES];", 9009 format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n" 9010 " copyItems:YES];", 9011 Style)); 9012 // FIXME: This does not seem right, there should be more indentation before 9013 // the array literal's entries. Nested blocks have the same problem. 9014 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 9015 " @\"a\",\n" 9016 " @\"a\"\n" 9017 "]\n" 9018 " copyItems:YES];", 9019 format("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 9020 " @\"a\",\n" 9021 " @\"a\"\n" 9022 " ]\n" 9023 " copyItems:YES];", 9024 Style)); 9025 EXPECT_EQ( 9026 "NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 9027 " copyItems:YES];", 9028 format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 9029 " copyItems:YES];", 9030 Style)); 9031 9032 verifyFormat("[self.a b:c c:d];", Style); 9033 EXPECT_EQ("[self.a b:c\n" 9034 " c:d];", 9035 format("[self.a b:c\n" 9036 "c:d];", 9037 Style)); 9038 } 9039 9040 TEST_F(FormatTest, FormatsLambdas) { 9041 verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n"); 9042 verifyFormat("int c = [&] { [=] { return b++; }(); }();\n"); 9043 verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n"); 9044 verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n"); 9045 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n"); 9046 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n"); 9047 verifyFormat("void f() {\n" 9048 " other(x.begin(), x.end(), [&](int, int) { return 1; });\n" 9049 "}\n"); 9050 verifyFormat("void f() {\n" 9051 " other(x.begin(), //\n" 9052 " x.end(), //\n" 9053 " [&](int, int) { return 1; });\n" 9054 "}\n"); 9055 verifyFormat("SomeFunction([]() { // A cool function...\n" 9056 " return 43;\n" 9057 "});"); 9058 verifyFormat("void f() {\n" 9059 " SomeFunction([](decltype(x), A *a) {});\n" 9060 "}"); 9061 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 9062 " [](const aaaaaaaaaa &a) { return a; });"); 9063 verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n" 9064 " SomeOtherFunctioooooooooooooooooooooooooon();\n" 9065 "});"); 9066 9067 // Lambdas with return types. 9068 verifyFormat("int c = []() -> int { return 2; }();\n"); 9069 verifyFormat("int c = []() -> vector<int> { return {2}; }();\n"); 9070 verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());"); 9071 verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n" 9072 " int j) -> int {\n" 9073 " return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n" 9074 "};"); 9075 9076 // Multiple lambdas in the same parentheses change indentation rules. 9077 verifyFormat("SomeFunction([]() {\n" 9078 " int i = 42;\n" 9079 " return i;\n" 9080 " },\n" 9081 " []() {\n" 9082 " int j = 43;\n" 9083 " return j;\n" 9084 " });"); 9085 9086 // More complex introducers. 9087 verifyFormat("return [i, args...] {};"); 9088 9089 // Not lambdas. 9090 verifyFormat("constexpr char hello[]{\"hello\"};"); 9091 verifyFormat("double &operator[](int i) { return 0; }\n" 9092 "int i;"); 9093 verifyFormat("std::unique_ptr<int[]> foo() {}"); 9094 verifyFormat("int i = a[a][a]->f();"); 9095 verifyFormat("int i = (*b)[a]->f();"); 9096 9097 // Other corner cases. 9098 verifyFormat("void f() {\n" 9099 " bar([]() {} // Did not respect SpacesBeforeTrailingComments\n" 9100 " );\n" 9101 "}"); 9102 9103 // Lambdas created through weird macros. 9104 verifyFormat("void f() {\n" 9105 " MACRO((const AA &a) { return 1; });\n" 9106 "}"); 9107 } 9108 9109 TEST_F(FormatTest, FormatsBlocks) { 9110 verifyFormat("int (^Block)(int, int);"); 9111 verifyFormat("int (^Block1)(int, int) = ^(int i, int j)"); 9112 verifyFormat("void (^block)(int) = ^(id test) { int i; };"); 9113 verifyFormat("void (^block)(int) = ^(int test) { int i; };"); 9114 verifyFormat("void (^block)(int) = ^id(int test) { int i; };"); 9115 verifyFormat("void (^block)(int) = ^int(int test) { int i; };"); 9116 9117 verifyFormat("foo(^{ bar(); });"); 9118 verifyFormat("foo(a, ^{ bar(); });"); 9119 9120 // FIXME: Make whitespace formatting consistent. Ask a ObjC dev how 9121 // it would ideally look. 9122 verifyFormat("[operation setCompletionBlock:^{ [self onOperationDone]; }];"); 9123 verifyFormat("int i = {[operation setCompletionBlock : ^{ [self " 9124 "onOperationDone]; }]};"); 9125 verifyFormat("[operation setCompletionBlock:^(int *i) { f(); }];"); 9126 verifyFormat("int a = [operation block:^int(int *i) { return 1; }];"); 9127 verifyFormat("[myObject doSomethingWith:arg1\n" 9128 " aaa:^int(int *a) { return 1; }\n" 9129 " bbb:f(a * bbbbbbbb)];"); 9130 9131 verifyFormat("[operation setCompletionBlock:^{\n" 9132 " [self.delegate newDataAvailable];\n" 9133 "}];", 9134 getLLVMStyleWithColumns(60)); 9135 verifyFormat("dispatch_async(_fileIOQueue, ^{\n" 9136 " NSString *path = [self sessionFilePath];\n" 9137 " if (path) {\n" 9138 " // ...\n" 9139 " }\n" 9140 "});"); 9141 verifyFormat("[[SessionService sharedService]\n" 9142 " loadWindowWithCompletionBlock:^(SessionWindow *window) {\n" 9143 " if (window) {\n" 9144 " [self windowDidLoad:window];\n" 9145 " } else {\n" 9146 " [self errorLoadingWindow];\n" 9147 " }\n" 9148 " }];"); 9149 verifyFormat("void (^largeBlock)(void) = ^{\n" 9150 " // ...\n" 9151 "};\n", 9152 getLLVMStyleWithColumns(40)); 9153 verifyFormat("[[SessionService sharedService]\n" 9154 " loadWindowWithCompletionBlock: //\n" 9155 " ^(SessionWindow *window) {\n" 9156 " if (window) {\n" 9157 " [self windowDidLoad:window];\n" 9158 " } else {\n" 9159 " [self errorLoadingWindow];\n" 9160 " }\n" 9161 " }];", 9162 getLLVMStyleWithColumns(60)); 9163 verifyFormat("[myObject doSomethingWith:arg1\n" 9164 " firstBlock:^(Foo *a) {\n" 9165 " // ...\n" 9166 " int i;\n" 9167 " }\n" 9168 " secondBlock:^(Bar *b) {\n" 9169 " // ...\n" 9170 " int i;\n" 9171 " }\n" 9172 " thirdBlock:^Foo(Bar *b) {\n" 9173 " // ...\n" 9174 " int i;\n" 9175 " }];"); 9176 verifyFormat("[myObject doSomethingWith:arg1\n" 9177 " firstBlock:-1\n" 9178 " secondBlock:^(Bar *b) {\n" 9179 " // ...\n" 9180 " int i;\n" 9181 " }];"); 9182 9183 verifyFormat("f(^{\n" 9184 " @autoreleasepool {\n" 9185 " if (a) {\n" 9186 " g();\n" 9187 " }\n" 9188 " }\n" 9189 "});"); 9190 } 9191 9192 TEST_F(FormatTest, SupportsCRLF) { 9193 EXPECT_EQ("int a;\r\n" 9194 "int b;\r\n" 9195 "int c;\r\n", 9196 format("int a;\r\n" 9197 " int b;\r\n" 9198 " int c;\r\n", 9199 getLLVMStyle())); 9200 EXPECT_EQ("int a;\r\n" 9201 "int b;\r\n" 9202 "int c;\r\n", 9203 format("int a;\r\n" 9204 " int b;\n" 9205 " int c;\r\n", 9206 getLLVMStyle())); 9207 EXPECT_EQ("int a;\n" 9208 "int b;\n" 9209 "int c;\n", 9210 format("int a;\r\n" 9211 " int b;\n" 9212 " int c;\n", 9213 getLLVMStyle())); 9214 EXPECT_EQ("\"aaaaaaa \"\r\n" 9215 "\"bbbbbbb\";\r\n", 9216 format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10))); 9217 EXPECT_EQ("#define A \\\r\n" 9218 " b; \\\r\n" 9219 " c; \\\r\n" 9220 " d;\r\n", 9221 format("#define A \\\r\n" 9222 " b; \\\r\n" 9223 " c; d; \r\n", 9224 getGoogleStyle())); 9225 9226 EXPECT_EQ("/*\r\n" 9227 "multi line block comments\r\n" 9228 "should not introduce\r\n" 9229 "an extra carriage return\r\n" 9230 "*/\r\n", 9231 format("/*\r\n" 9232 "multi line block comments\r\n" 9233 "should not introduce\r\n" 9234 "an extra carriage return\r\n" 9235 "*/\r\n")); 9236 } 9237 9238 TEST_F(FormatTest, MunchSemicolonAfterBlocks) { 9239 verifyFormat("MY_CLASS(C) {\n" 9240 " int i;\n" 9241 " int j;\n" 9242 "};"); 9243 } 9244 9245 TEST_F(FormatTest, ConfigurableContinuationIndentWidth) { 9246 FormatStyle TwoIndent = getLLVMStyleWithColumns(15); 9247 TwoIndent.ContinuationIndentWidth = 2; 9248 9249 EXPECT_EQ("int i =\n" 9250 " longFunction(\n" 9251 " arg);", 9252 format("int i = longFunction(arg);", TwoIndent)); 9253 9254 FormatStyle SixIndent = getLLVMStyleWithColumns(20); 9255 SixIndent.ContinuationIndentWidth = 6; 9256 9257 EXPECT_EQ("int i =\n" 9258 " longFunction(\n" 9259 " arg);", 9260 format("int i = longFunction(arg);", SixIndent)); 9261 } 9262 9263 TEST_F(FormatTest, SpacesInAngles) { 9264 FormatStyle Spaces = getLLVMStyle(); 9265 Spaces.SpacesInAngles = true; 9266 9267 verifyFormat("static_cast< int >(arg);", Spaces); 9268 verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces); 9269 verifyFormat("f< int, float >();", Spaces); 9270 verifyFormat("template <> g() {}", Spaces); 9271 verifyFormat("template < std::vector< int > > f() {}", Spaces); 9272 9273 Spaces.Standard = FormatStyle::LS_Cpp03; 9274 Spaces.SpacesInAngles = true; 9275 verifyFormat("A< A< int > >();", Spaces); 9276 9277 Spaces.SpacesInAngles = false; 9278 verifyFormat("A<A<int> >();", Spaces); 9279 9280 Spaces.Standard = FormatStyle::LS_Cpp11; 9281 Spaces.SpacesInAngles = true; 9282 verifyFormat("A< A< int > >();", Spaces); 9283 9284 Spaces.SpacesInAngles = false; 9285 verifyFormat("A<A<int>>();", Spaces); 9286 } 9287 9288 TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) { 9289 std::string code = "#if A\n" 9290 "#if B\n" 9291 "a.\n" 9292 "#endif\n" 9293 " a = 1;\n" 9294 "#else\n" 9295 "#endif\n" 9296 "#if C\n" 9297 "#else\n" 9298 "#endif\n"; 9299 EXPECT_EQ(code, format(code)); 9300 } 9301 9302 TEST_F(FormatTest, HandleConflictMarkers) { 9303 // Git/SVN conflict markers. 9304 EXPECT_EQ("int a;\n" 9305 "void f() {\n" 9306 " callme(some(parameter1,\n" 9307 "<<<<<<< text by the vcs\n" 9308 " parameter2),\n" 9309 "||||||| text by the vcs\n" 9310 " parameter2),\n" 9311 " parameter3,\n" 9312 "======= text by the vcs\n" 9313 " parameter2, parameter3),\n" 9314 ">>>>>>> text by the vcs\n" 9315 " otherparameter);\n", 9316 format("int a;\n" 9317 "void f() {\n" 9318 " callme(some(parameter1,\n" 9319 "<<<<<<< text by the vcs\n" 9320 " parameter2),\n" 9321 "||||||| text by the vcs\n" 9322 " parameter2),\n" 9323 " parameter3,\n" 9324 "======= text by the vcs\n" 9325 " parameter2,\n" 9326 " parameter3),\n" 9327 ">>>>>>> text by the vcs\n" 9328 " otherparameter);\n")); 9329 9330 // Perforce markers. 9331 EXPECT_EQ("void f() {\n" 9332 " function(\n" 9333 ">>>> text by the vcs\n" 9334 " parameter,\n" 9335 "==== text by the vcs\n" 9336 " parameter,\n" 9337 "==== text by the vcs\n" 9338 " parameter,\n" 9339 "<<<< text by the vcs\n" 9340 " parameter);\n", 9341 format("void f() {\n" 9342 " function(\n" 9343 ">>>> text by the vcs\n" 9344 " parameter,\n" 9345 "==== text by the vcs\n" 9346 " parameter,\n" 9347 "==== text by the vcs\n" 9348 " parameter,\n" 9349 "<<<< text by the vcs\n" 9350 " parameter);\n")); 9351 9352 EXPECT_EQ("<<<<<<<\n" 9353 "|||||||\n" 9354 "=======\n" 9355 ">>>>>>>", 9356 format("<<<<<<<\n" 9357 "|||||||\n" 9358 "=======\n" 9359 ">>>>>>>")); 9360 9361 EXPECT_EQ("<<<<<<<\n" 9362 "|||||||\n" 9363 "int i;\n" 9364 "=======\n" 9365 ">>>>>>>", 9366 format("<<<<<<<\n" 9367 "|||||||\n" 9368 "int i;\n" 9369 "=======\n" 9370 ">>>>>>>")); 9371 9372 // FIXME: Handle parsing of macros around conflict markers correctly: 9373 EXPECT_EQ("#define Macro \\\n" 9374 "<<<<<<<\n" 9375 "Something \\\n" 9376 "|||||||\n" 9377 "Else \\\n" 9378 "=======\n" 9379 "Other \\\n" 9380 ">>>>>>>\n" 9381 " End int i;\n", 9382 format("#define Macro \\\n" 9383 "<<<<<<<\n" 9384 " Something \\\n" 9385 "|||||||\n" 9386 " Else \\\n" 9387 "=======\n" 9388 " Other \\\n" 9389 ">>>>>>>\n" 9390 " End\n" 9391 "int i;\n")); 9392 } 9393 9394 TEST_F(FormatTest, DisableRegions) { 9395 EXPECT_EQ("int i;\n" 9396 "// clang-format off\n" 9397 " int j;\n" 9398 "// clang-format on\n" 9399 "int k;", 9400 format(" int i;\n" 9401 " // clang-format off\n" 9402 " int j;\n" 9403 " // clang-format on\n" 9404 " int k;")); 9405 EXPECT_EQ("int i;\n" 9406 "/* clang-format off */\n" 9407 " int j;\n" 9408 "/* clang-format on */\n" 9409 "int k;", 9410 format(" int i;\n" 9411 " /* clang-format off */\n" 9412 " int j;\n" 9413 " /* clang-format on */\n" 9414 " int k;")); 9415 } 9416 9417 TEST_F(FormatTest, DoNotCrashOnInvalidInput) { 9418 format("? ) ="); 9419 } 9420 9421 } // end namespace tooling 9422 } // end namespace clang 9423