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 "clang/Format/Format.h" 11 12 #include "../Tooling/RewriterTestContext.h" 13 #include "FormatTestUtils.h" 14 15 #include "clang/Frontend/TextDiagnosticPrinter.h" 16 #include "llvm/Support/Debug.h" 17 #include "llvm/Support/MemoryBuffer.h" 18 #include "gtest/gtest.h" 19 20 #define DEBUG_TYPE "format-test" 21 22 namespace clang { 23 namespace format { 24 namespace { 25 26 FormatStyle getGoogleStyle() { return getGoogleStyle(FormatStyle::LK_Cpp); } 27 28 class FormatTest : public ::testing::Test { 29 protected: 30 enum IncompleteCheck { 31 IC_ExpectComplete, 32 IC_ExpectIncomplete, 33 IC_DoNotCheck 34 }; 35 36 std::string format(llvm::StringRef Code, 37 const FormatStyle &Style = getLLVMStyle(), 38 IncompleteCheck CheckIncomplete = IC_ExpectComplete) { 39 DEBUG(llvm::errs() << "---\n"); 40 DEBUG(llvm::errs() << Code << "\n\n"); 41 std::vector<tooling::Range> Ranges(1, tooling::Range(0, Code.size())); 42 bool IncompleteFormat = false; 43 tooling::Replacements Replaces = 44 reformat(Style, Code, Ranges, "<stdin>", &IncompleteFormat); 45 if (CheckIncomplete != IC_DoNotCheck) { 46 bool ExpectedIncompleteFormat = CheckIncomplete == IC_ExpectIncomplete; 47 EXPECT_EQ(ExpectedIncompleteFormat, IncompleteFormat) << Code << "\n\n"; 48 } 49 ReplacementCount = Replaces.size(); 50 std::string Result = applyAllReplacements(Code, Replaces); 51 EXPECT_NE("", Result); 52 DEBUG(llvm::errs() << "\n" << Result << "\n\n"); 53 return Result; 54 } 55 56 FormatStyle getLLVMStyleWithColumns(unsigned ColumnLimit) { 57 FormatStyle Style = getLLVMStyle(); 58 Style.ColumnLimit = ColumnLimit; 59 return Style; 60 } 61 62 FormatStyle getGoogleStyleWithColumns(unsigned ColumnLimit) { 63 FormatStyle Style = getGoogleStyle(); 64 Style.ColumnLimit = ColumnLimit; 65 return Style; 66 } 67 68 void verifyFormat(llvm::StringRef Code, 69 const FormatStyle &Style = getLLVMStyle()) { 70 EXPECT_EQ(Code.str(), format(test::messUp(Code), Style)); 71 } 72 73 void verifyIncompleteFormat(llvm::StringRef Code, 74 const FormatStyle &Style = getLLVMStyle()) { 75 EXPECT_EQ(Code.str(), 76 format(test::messUp(Code), Style, IC_ExpectIncomplete)); 77 } 78 79 void verifyGoogleFormat(llvm::StringRef Code) { 80 verifyFormat(Code, getGoogleStyle()); 81 } 82 83 void verifyIndependentOfContext(llvm::StringRef text) { 84 verifyFormat(text); 85 verifyFormat(llvm::Twine("void f() { " + text + " }").str()); 86 } 87 88 /// \brief Verify that clang-format does not crash on the given input. 89 void verifyNoCrash(llvm::StringRef Code, 90 const FormatStyle &Style = getLLVMStyle()) { 91 format(Code, Style, IC_DoNotCheck); 92 } 93 94 int ReplacementCount; 95 }; 96 97 TEST_F(FormatTest, MessUp) { 98 EXPECT_EQ("1 2 3", test::messUp("1 2 3")); 99 EXPECT_EQ("1 2 3\n", test::messUp("1\n2\n3\n")); 100 EXPECT_EQ("a\n//b\nc", test::messUp("a\n//b\nc")); 101 EXPECT_EQ("a\n#b\nc", test::messUp("a\n#b\nc")); 102 EXPECT_EQ("a\n#b c d\ne", test::messUp("a\n#b\\\nc\\\nd\ne")); 103 } 104 105 //===----------------------------------------------------------------------===// 106 // Basic function tests. 107 //===----------------------------------------------------------------------===// 108 109 TEST_F(FormatTest, DoesNotChangeCorrectlyFormattedCode) { 110 EXPECT_EQ(";", format(";")); 111 } 112 113 TEST_F(FormatTest, FormatsGlobalStatementsAt0) { 114 EXPECT_EQ("int i;", format(" int i;")); 115 EXPECT_EQ("\nint i;", format(" \n\t \v \f int i;")); 116 EXPECT_EQ("int i;\nint j;", format(" int i; int j;")); 117 EXPECT_EQ("int i;\nint j;", format(" int i;\n int j;")); 118 } 119 120 TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) { 121 EXPECT_EQ("int i;", format("int\ni;")); 122 } 123 124 TEST_F(FormatTest, FormatsNestedBlockStatements) { 125 EXPECT_EQ("{\n {\n {}\n }\n}", format("{{{}}}")); 126 } 127 128 TEST_F(FormatTest, FormatsNestedCall) { 129 verifyFormat("Method(f1, f2(f3));"); 130 verifyFormat("Method(f1(f2, f3()));"); 131 verifyFormat("Method(f1(f2, (f3())));"); 132 } 133 134 TEST_F(FormatTest, NestedNameSpecifiers) { 135 verifyFormat("vector<::Type> v;"); 136 verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())"); 137 verifyFormat("static constexpr bool Bar = decltype(bar())::value;"); 138 verifyFormat("bool a = 2 < ::SomeFunction();"); 139 } 140 141 TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) { 142 EXPECT_EQ("if (a) {\n" 143 " f();\n" 144 "}", 145 format("if(a){f();}")); 146 EXPECT_EQ(4, ReplacementCount); 147 EXPECT_EQ("if (a) {\n" 148 " f();\n" 149 "}", 150 format("if (a) {\n" 151 " f();\n" 152 "}")); 153 EXPECT_EQ(0, ReplacementCount); 154 EXPECT_EQ("/*\r\n" 155 "\r\n" 156 "*/\r\n", 157 format("/*\r\n" 158 "\r\n" 159 "*/\r\n")); 160 EXPECT_EQ(0, ReplacementCount); 161 } 162 163 TEST_F(FormatTest, RemovesEmptyLines) { 164 EXPECT_EQ("class C {\n" 165 " int i;\n" 166 "};", 167 format("class C {\n" 168 " int i;\n" 169 "\n" 170 "};")); 171 172 // Don't remove empty lines at the start of namespaces or extern "C" blocks. 173 EXPECT_EQ("namespace N {\n" 174 "\n" 175 "int i;\n" 176 "}", 177 format("namespace N {\n" 178 "\n" 179 "int i;\n" 180 "}", 181 getGoogleStyle())); 182 EXPECT_EQ("extern /**/ \"C\" /**/ {\n" 183 "\n" 184 "int i;\n" 185 "}", 186 format("extern /**/ \"C\" /**/ {\n" 187 "\n" 188 "int i;\n" 189 "}", 190 getGoogleStyle())); 191 192 // ...but do keep inlining and removing empty lines for non-block extern "C" 193 // functions. 194 verifyFormat("extern \"C\" int f() { return 42; }", getGoogleStyle()); 195 EXPECT_EQ("extern \"C\" int f() {\n" 196 " int i = 42;\n" 197 " return i;\n" 198 "}", 199 format("extern \"C\" int f() {\n" 200 "\n" 201 " int i = 42;\n" 202 " return i;\n" 203 "}", 204 getGoogleStyle())); 205 206 // Remove empty lines at the beginning and end of blocks. 207 EXPECT_EQ("void f() {\n" 208 "\n" 209 " if (a) {\n" 210 "\n" 211 " f();\n" 212 " }\n" 213 "}", 214 format("void f() {\n" 215 "\n" 216 " if (a) {\n" 217 "\n" 218 " f();\n" 219 "\n" 220 " }\n" 221 "\n" 222 "}", 223 getLLVMStyle())); 224 EXPECT_EQ("void f() {\n" 225 " if (a) {\n" 226 " f();\n" 227 " }\n" 228 "}", 229 format("void f() {\n" 230 "\n" 231 " if (a) {\n" 232 "\n" 233 " f();\n" 234 "\n" 235 " }\n" 236 "\n" 237 "}", 238 getGoogleStyle())); 239 240 // Don't remove empty lines in more complex control statements. 241 EXPECT_EQ("void f() {\n" 242 " if (a) {\n" 243 " f();\n" 244 "\n" 245 " } else if (b) {\n" 246 " f();\n" 247 " }\n" 248 "}", 249 format("void f() {\n" 250 " if (a) {\n" 251 " f();\n" 252 "\n" 253 " } else if (b) {\n" 254 " f();\n" 255 "\n" 256 " }\n" 257 "\n" 258 "}")); 259 260 // FIXME: This is slightly inconsistent. 261 EXPECT_EQ("namespace {\n" 262 "int i;\n" 263 "}", 264 format("namespace {\n" 265 "int i;\n" 266 "\n" 267 "}")); 268 EXPECT_EQ("namespace {\n" 269 "int i;\n" 270 "\n" 271 "} // namespace", 272 format("namespace {\n" 273 "int i;\n" 274 "\n" 275 "} // namespace")); 276 } 277 278 TEST_F(FormatTest, RecognizesBinaryOperatorKeywords) { 279 verifyFormat("x = (a) and (b);"); 280 verifyFormat("x = (a) or (b);"); 281 verifyFormat("x = (a) bitand (b);"); 282 verifyFormat("x = (a) bitor (b);"); 283 verifyFormat("x = (a) not_eq (b);"); 284 verifyFormat("x = (a) and_eq (b);"); 285 verifyFormat("x = (a) or_eq (b);"); 286 verifyFormat("x = (a) xor (b);"); 287 } 288 289 //===----------------------------------------------------------------------===// 290 // Tests for control statements. 291 //===----------------------------------------------------------------------===// 292 293 TEST_F(FormatTest, FormatIfWithoutCompoundStatement) { 294 verifyFormat("if (true)\n f();\ng();"); 295 verifyFormat("if (a)\n if (b)\n if (c)\n g();\nh();"); 296 verifyFormat("if (a)\n if (b) {\n f();\n }\ng();"); 297 298 FormatStyle AllowsMergedIf = getLLVMStyle(); 299 AllowsMergedIf.AlignEscapedNewlinesLeft = true; 300 AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; 301 verifyFormat("if (a)\n" 302 " // comment\n" 303 " f();", 304 AllowsMergedIf); 305 verifyFormat("{\n" 306 " if (a)\n" 307 " label:\n" 308 " f();\n" 309 "}", 310 AllowsMergedIf); 311 verifyFormat("#define A \\\n" 312 " if (a) \\\n" 313 " label: \\\n" 314 " f()", 315 AllowsMergedIf); 316 verifyFormat("if (a)\n" 317 " ;", 318 AllowsMergedIf); 319 verifyFormat("if (a)\n" 320 " if (b) return;", 321 AllowsMergedIf); 322 323 verifyFormat("if (a) // Can't merge this\n" 324 " f();\n", 325 AllowsMergedIf); 326 verifyFormat("if (a) /* still don't merge */\n" 327 " f();", 328 AllowsMergedIf); 329 verifyFormat("if (a) { // Never merge this\n" 330 " f();\n" 331 "}", 332 AllowsMergedIf); 333 verifyFormat("if (a) { /* Never merge this */\n" 334 " f();\n" 335 "}", 336 AllowsMergedIf); 337 338 AllowsMergedIf.ColumnLimit = 14; 339 verifyFormat("if (a) return;", AllowsMergedIf); 340 verifyFormat("if (aaaaaaaaa)\n" 341 " return;", 342 AllowsMergedIf); 343 344 AllowsMergedIf.ColumnLimit = 13; 345 verifyFormat("if (a)\n return;", AllowsMergedIf); 346 } 347 348 TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) { 349 FormatStyle AllowsMergedLoops = getLLVMStyle(); 350 AllowsMergedLoops.AllowShortLoopsOnASingleLine = true; 351 verifyFormat("while (true) continue;", AllowsMergedLoops); 352 verifyFormat("for (;;) continue;", AllowsMergedLoops); 353 verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops); 354 verifyFormat("while (true)\n" 355 " ;", 356 AllowsMergedLoops); 357 verifyFormat("for (;;)\n" 358 " ;", 359 AllowsMergedLoops); 360 verifyFormat("for (;;)\n" 361 " for (;;) continue;", 362 AllowsMergedLoops); 363 verifyFormat("for (;;) // Can't merge this\n" 364 " continue;", 365 AllowsMergedLoops); 366 verifyFormat("for (;;) /* still don't merge */\n" 367 " continue;", 368 AllowsMergedLoops); 369 } 370 371 TEST_F(FormatTest, FormatShortBracedStatements) { 372 FormatStyle AllowSimpleBracedStatements = getLLVMStyle(); 373 AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine = true; 374 375 AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = true; 376 AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true; 377 378 verifyFormat("if (true) {}", AllowSimpleBracedStatements); 379 verifyFormat("while (true) {}", AllowSimpleBracedStatements); 380 verifyFormat("for (;;) {}", AllowSimpleBracedStatements); 381 verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements); 382 verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements); 383 verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements); 384 verifyFormat("if (true) { //\n" 385 " f();\n" 386 "}", 387 AllowSimpleBracedStatements); 388 verifyFormat("if (true) {\n" 389 " f();\n" 390 " f();\n" 391 "}", 392 AllowSimpleBracedStatements); 393 verifyFormat("if (true) {\n" 394 " f();\n" 395 "} else {\n" 396 " f();\n" 397 "}", 398 AllowSimpleBracedStatements); 399 400 verifyFormat("template <int> struct A2 {\n" 401 " struct B {};\n" 402 "};", 403 AllowSimpleBracedStatements); 404 405 AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = false; 406 verifyFormat("if (true) {\n" 407 " f();\n" 408 "}", 409 AllowSimpleBracedStatements); 410 verifyFormat("if (true) {\n" 411 " f();\n" 412 "} else {\n" 413 " f();\n" 414 "}", 415 AllowSimpleBracedStatements); 416 417 AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false; 418 verifyFormat("while (true) {\n" 419 " f();\n" 420 "}", 421 AllowSimpleBracedStatements); 422 verifyFormat("for (;;) {\n" 423 " f();\n" 424 "}", 425 AllowSimpleBracedStatements); 426 } 427 428 TEST_F(FormatTest, ParseIfElse) { 429 verifyFormat("if (true)\n" 430 " if (true)\n" 431 " if (true)\n" 432 " f();\n" 433 " else\n" 434 " g();\n" 435 " else\n" 436 " h();\n" 437 "else\n" 438 " i();"); 439 verifyFormat("if (true)\n" 440 " if (true)\n" 441 " if (true) {\n" 442 " if (true)\n" 443 " f();\n" 444 " } else {\n" 445 " g();\n" 446 " }\n" 447 " else\n" 448 " h();\n" 449 "else {\n" 450 " i();\n" 451 "}"); 452 verifyFormat("void f() {\n" 453 " if (a) {\n" 454 " } else {\n" 455 " }\n" 456 "}"); 457 } 458 459 TEST_F(FormatTest, ElseIf) { 460 verifyFormat("if (a) {\n} else if (b) {\n}"); 461 verifyFormat("if (a)\n" 462 " f();\n" 463 "else if (b)\n" 464 " g();\n" 465 "else\n" 466 " h();"); 467 verifyFormat("if (a) {\n" 468 " f();\n" 469 "}\n" 470 "// or else ..\n" 471 "else {\n" 472 " g()\n" 473 "}"); 474 475 verifyFormat("if (a) {\n" 476 "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 477 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" 478 "}"); 479 verifyFormat("if (a) {\n" 480 "} else if (\n" 481 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 482 "}", 483 getLLVMStyleWithColumns(62)); 484 } 485 486 TEST_F(FormatTest, FormatsForLoop) { 487 verifyFormat( 488 "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n" 489 " ++VeryVeryLongLoopVariable)\n" 490 " ;"); 491 verifyFormat("for (;;)\n" 492 " f();"); 493 verifyFormat("for (;;) {\n}"); 494 verifyFormat("for (;;) {\n" 495 " f();\n" 496 "}"); 497 verifyFormat("for (int i = 0; (i < 10); ++i) {\n}"); 498 499 verifyFormat( 500 "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n" 501 " E = UnwrappedLines.end();\n" 502 " I != E; ++I) {\n}"); 503 504 verifyFormat( 505 "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n" 506 " ++IIIII) {\n}"); 507 verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n" 508 " aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n" 509 " aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}"); 510 verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n" 511 " I = FD->getDeclsInPrototypeScope().begin(),\n" 512 " E = FD->getDeclsInPrototypeScope().end();\n" 513 " I != E; ++I) {\n}"); 514 verifyFormat("for (SmallVectorImpl<TemplateIdAnnotationn *>::iterator\n" 515 " I = Container.begin(),\n" 516 " E = Container.end();\n" 517 " I != E; ++I) {\n}", 518 getLLVMStyleWithColumns(76)); 519 520 verifyFormat( 521 "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" 522 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n" 523 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 524 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 525 " ++aaaaaaaaaaa) {\n}"); 526 verifyFormat("for (int i = 0; i < aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 527 " bbbbbbbbbbbbbbbbbbbb < ccccccccccccccc;\n" 528 " ++i) {\n}"); 529 verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n" 530 " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" 531 "}"); 532 verifyFormat("for (some_namespace::SomeIterator iter( // force break\n" 533 " aaaaaaaaaa);\n" 534 " iter; ++iter) {\n" 535 "}"); 536 verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 537 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 538 " aaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbbbbbbb;\n" 539 " ++aaaaaaaaaaaaaaaaaaaaaaaaaaa) {"); 540 541 FormatStyle NoBinPacking = getLLVMStyle(); 542 NoBinPacking.BinPackParameters = false; 543 verifyFormat("for (int aaaaaaaaaaa = 1;\n" 544 " aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n" 545 " aaaaaaaaaaaaaaaa,\n" 546 " aaaaaaaaaaaaaaaa,\n" 547 " aaaaaaaaaaaaaaaa);\n" 548 " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" 549 "}", 550 NoBinPacking); 551 verifyFormat( 552 "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n" 553 " E = UnwrappedLines.end();\n" 554 " I != E;\n" 555 " ++I) {\n}", 556 NoBinPacking); 557 } 558 559 TEST_F(FormatTest, RangeBasedForLoops) { 560 verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 561 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 562 verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n" 563 " aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}"); 564 verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n" 565 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 566 verifyFormat("for (aaaaaaaaa aaaaaaaaaaaaaaaaaaaaa :\n" 567 " aaaaaaaaaaaa.aaaaaaaaaaaa().aaaaaaaaa().a()) {\n}"); 568 } 569 570 TEST_F(FormatTest, ForEachLoops) { 571 verifyFormat("void f() {\n" 572 " foreach (Item *item, itemlist) {}\n" 573 " Q_FOREACH (Item *item, itemlist) {}\n" 574 " BOOST_FOREACH (Item *item, itemlist) {}\n" 575 " UNKNOWN_FORACH(Item * item, itemlist) {}\n" 576 "}"); 577 578 // As function-like macros. 579 verifyFormat("#define foreach(x, y)\n" 580 "#define Q_FOREACH(x, y)\n" 581 "#define BOOST_FOREACH(x, y)\n" 582 "#define UNKNOWN_FOREACH(x, y)\n"); 583 584 // Not as function-like macros. 585 verifyFormat("#define foreach (x, y)\n" 586 "#define Q_FOREACH (x, y)\n" 587 "#define BOOST_FOREACH (x, y)\n" 588 "#define UNKNOWN_FOREACH (x, y)\n"); 589 } 590 591 TEST_F(FormatTest, FormatsWhileLoop) { 592 verifyFormat("while (true) {\n}"); 593 verifyFormat("while (true)\n" 594 " f();"); 595 verifyFormat("while () {\n}"); 596 verifyFormat("while () {\n" 597 " f();\n" 598 "}"); 599 } 600 601 TEST_F(FormatTest, FormatsDoWhile) { 602 verifyFormat("do {\n" 603 " do_something();\n" 604 "} while (something());"); 605 verifyFormat("do\n" 606 " do_something();\n" 607 "while (something());"); 608 } 609 610 TEST_F(FormatTest, FormatsSwitchStatement) { 611 verifyFormat("switch (x) {\n" 612 "case 1:\n" 613 " f();\n" 614 " break;\n" 615 "case kFoo:\n" 616 "case ns::kBar:\n" 617 "case kBaz:\n" 618 " break;\n" 619 "default:\n" 620 " g();\n" 621 " break;\n" 622 "}"); 623 verifyFormat("switch (x) {\n" 624 "case 1: {\n" 625 " f();\n" 626 " break;\n" 627 "}\n" 628 "case 2: {\n" 629 " break;\n" 630 "}\n" 631 "}"); 632 verifyFormat("switch (x) {\n" 633 "case 1: {\n" 634 " f();\n" 635 " {\n" 636 " g();\n" 637 " h();\n" 638 " }\n" 639 " break;\n" 640 "}\n" 641 "}"); 642 verifyFormat("switch (x) {\n" 643 "case 1: {\n" 644 " f();\n" 645 " if (foo) {\n" 646 " g();\n" 647 " h();\n" 648 " }\n" 649 " break;\n" 650 "}\n" 651 "}"); 652 verifyFormat("switch (x) {\n" 653 "case 1: {\n" 654 " f();\n" 655 " g();\n" 656 "} break;\n" 657 "}"); 658 verifyFormat("switch (test)\n" 659 " ;"); 660 verifyFormat("switch (x) {\n" 661 "default: {\n" 662 " // Do nothing.\n" 663 "}\n" 664 "}"); 665 verifyFormat("switch (x) {\n" 666 "// comment\n" 667 "// if 1, do f()\n" 668 "case 1:\n" 669 " f();\n" 670 "}"); 671 verifyFormat("switch (x) {\n" 672 "case 1:\n" 673 " // Do amazing stuff\n" 674 " {\n" 675 " f();\n" 676 " g();\n" 677 " }\n" 678 " break;\n" 679 "}"); 680 verifyFormat("#define A \\\n" 681 " switch (x) { \\\n" 682 " case a: \\\n" 683 " foo = b; \\\n" 684 " }", 685 getLLVMStyleWithColumns(20)); 686 verifyFormat("#define OPERATION_CASE(name) \\\n" 687 " case OP_name: \\\n" 688 " return operations::Operation##name\n", 689 getLLVMStyleWithColumns(40)); 690 verifyFormat("switch (x) {\n" 691 "case 1:;\n" 692 "default:;\n" 693 " int i;\n" 694 "}"); 695 696 verifyGoogleFormat("switch (x) {\n" 697 " case 1:\n" 698 " f();\n" 699 " break;\n" 700 " case kFoo:\n" 701 " case ns::kBar:\n" 702 " case kBaz:\n" 703 " break;\n" 704 " default:\n" 705 " g();\n" 706 " break;\n" 707 "}"); 708 verifyGoogleFormat("switch (x) {\n" 709 " case 1: {\n" 710 " f();\n" 711 " break;\n" 712 " }\n" 713 "}"); 714 verifyGoogleFormat("switch (test)\n" 715 " ;"); 716 717 verifyGoogleFormat("#define OPERATION_CASE(name) \\\n" 718 " case OP_name: \\\n" 719 " return operations::Operation##name\n"); 720 verifyGoogleFormat("Operation codeToOperation(OperationCode OpCode) {\n" 721 " // Get the correction operation class.\n" 722 " switch (OpCode) {\n" 723 " CASE(Add);\n" 724 " CASE(Subtract);\n" 725 " default:\n" 726 " return operations::Unknown;\n" 727 " }\n" 728 "#undef OPERATION_CASE\n" 729 "}"); 730 verifyFormat("DEBUG({\n" 731 " switch (x) {\n" 732 " case A:\n" 733 " f();\n" 734 " break;\n" 735 " // On B:\n" 736 " case B:\n" 737 " g();\n" 738 " break;\n" 739 " }\n" 740 "});"); 741 verifyFormat("switch (a) {\n" 742 "case (b):\n" 743 " return;\n" 744 "}"); 745 746 verifyFormat("switch (a) {\n" 747 "case some_namespace::\n" 748 " some_constant:\n" 749 " return;\n" 750 "}", 751 getLLVMStyleWithColumns(34)); 752 } 753 754 TEST_F(FormatTest, CaseRanges) { 755 verifyFormat("switch (x) {\n" 756 "case 'A' ... 'Z':\n" 757 "case 1 ... 5:\n" 758 " break;\n" 759 "}"); 760 } 761 762 TEST_F(FormatTest, ShortCaseLabels) { 763 FormatStyle Style = getLLVMStyle(); 764 Style.AllowShortCaseLabelsOnASingleLine = true; 765 verifyFormat("switch (a) {\n" 766 "case 1: x = 1; break;\n" 767 "case 2: return;\n" 768 "case 3:\n" 769 "case 4:\n" 770 "case 5: return;\n" 771 "case 6: // comment\n" 772 " return;\n" 773 "case 7:\n" 774 " // comment\n" 775 " return;\n" 776 "case 8:\n" 777 " x = 8; // comment\n" 778 " break;\n" 779 "default: y = 1; break;\n" 780 "}", 781 Style); 782 verifyFormat("switch (a) {\n" 783 "#if FOO\n" 784 "case 0: return 0;\n" 785 "#endif\n" 786 "}", 787 Style); 788 verifyFormat("switch (a) {\n" 789 "case 1: {\n" 790 "}\n" 791 "case 2: {\n" 792 " return;\n" 793 "}\n" 794 "case 3: {\n" 795 " x = 1;\n" 796 " return;\n" 797 "}\n" 798 "case 4:\n" 799 " if (x)\n" 800 " return;\n" 801 "}", 802 Style); 803 Style.ColumnLimit = 21; 804 verifyFormat("switch (a) {\n" 805 "case 1: x = 1; break;\n" 806 "case 2: return;\n" 807 "case 3:\n" 808 "case 4:\n" 809 "case 5: return;\n" 810 "default:\n" 811 " y = 1;\n" 812 " break;\n" 813 "}", 814 Style); 815 } 816 817 TEST_F(FormatTest, FormatsLabels) { 818 verifyFormat("void f() {\n" 819 " some_code();\n" 820 "test_label:\n" 821 " some_other_code();\n" 822 " {\n" 823 " some_more_code();\n" 824 " another_label:\n" 825 " some_more_code();\n" 826 " }\n" 827 "}"); 828 verifyFormat("{\n" 829 " some_code();\n" 830 "test_label:\n" 831 " some_other_code();\n" 832 "}"); 833 verifyFormat("{\n" 834 " some_code();\n" 835 "test_label:;\n" 836 " int i = 0;\n" 837 "}"); 838 } 839 840 //===----------------------------------------------------------------------===// 841 // Tests for comments. 842 //===----------------------------------------------------------------------===// 843 844 TEST_F(FormatTest, UnderstandsSingleLineComments) { 845 verifyFormat("//* */"); 846 verifyFormat("// line 1\n" 847 "// line 2\n" 848 "void f() {}\n"); 849 850 verifyFormat("void f() {\n" 851 " // Doesn't do anything\n" 852 "}"); 853 verifyFormat("SomeObject\n" 854 " // Calling someFunction on SomeObject\n" 855 " .someFunction();"); 856 verifyFormat("auto result = SomeObject\n" 857 " // Calling someFunction on SomeObject\n" 858 " .someFunction();"); 859 verifyFormat("void f(int i, // some comment (probably for i)\n" 860 " int j, // some comment (probably for j)\n" 861 " int k); // some comment (probably for k)"); 862 verifyFormat("void f(int i,\n" 863 " // some comment (probably for j)\n" 864 " int j,\n" 865 " // some comment (probably for k)\n" 866 " int k);"); 867 868 verifyFormat("int i // This is a fancy variable\n" 869 " = 5; // with nicely aligned comment."); 870 871 verifyFormat("// Leading comment.\n" 872 "int a; // Trailing comment."); 873 verifyFormat("int a; // Trailing comment\n" 874 " // on 2\n" 875 " // or 3 lines.\n" 876 "int b;"); 877 verifyFormat("int a; // Trailing comment\n" 878 "\n" 879 "// Leading comment.\n" 880 "int b;"); 881 verifyFormat("int a; // Comment.\n" 882 " // More details.\n" 883 "int bbbb; // Another comment."); 884 verifyFormat( 885 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 886 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // comment\n" 887 "int cccccccccccccccccccccccccccccc; // comment\n" 888 "int ddd; // looooooooooooooooooooooooong comment\n" 889 "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 890 "int bbbbbbbbbbbbbbbbbbbbb; // comment\n" 891 "int ccccccccccccccccccc; // comment"); 892 893 verifyFormat("#include \"a\" // comment\n" 894 "#include \"a/b/c\" // comment"); 895 verifyFormat("#include <a> // comment\n" 896 "#include <a/b/c> // comment"); 897 EXPECT_EQ("#include \"a\" // comment\n" 898 "#include \"a/b/c\" // comment", 899 format("#include \\\n" 900 " \"a\" // comment\n" 901 "#include \"a/b/c\" // comment")); 902 903 verifyFormat("enum E {\n" 904 " // comment\n" 905 " VAL_A, // comment\n" 906 " VAL_B\n" 907 "};"); 908 909 verifyFormat( 910 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 911 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment"); 912 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 913 " // Comment inside a statement.\n" 914 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 915 verifyFormat("SomeFunction(a,\n" 916 " // comment\n" 917 " b + x);"); 918 verifyFormat("SomeFunction(a, a,\n" 919 " // comment\n" 920 " b + x);"); 921 verifyFormat( 922 "bool aaaaaaaaaaaaa = // comment\n" 923 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 924 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 925 926 verifyFormat("int aaaa; // aaaaa\n" 927 "int aa; // aaaaaaa", 928 getLLVMStyleWithColumns(20)); 929 930 EXPECT_EQ("void f() { // This does something ..\n" 931 "}\n" 932 "int a; // This is unrelated", 933 format("void f() { // This does something ..\n" 934 " }\n" 935 "int a; // This is unrelated")); 936 EXPECT_EQ("class C {\n" 937 " void f() { // This does something ..\n" 938 " } // awesome..\n" 939 "\n" 940 " int a; // This is unrelated\n" 941 "};", 942 format("class C{void f() { // This does something ..\n" 943 " } // awesome..\n" 944 " \n" 945 "int a; // This is unrelated\n" 946 "};")); 947 948 EXPECT_EQ("int i; // single line trailing comment", 949 format("int i;\\\n// single line trailing comment")); 950 951 verifyGoogleFormat("int a; // Trailing comment."); 952 953 verifyFormat("someFunction(anotherFunction( // Force break.\n" 954 " parameter));"); 955 956 verifyGoogleFormat("#endif // HEADER_GUARD"); 957 958 verifyFormat("const char *test[] = {\n" 959 " // A\n" 960 " \"aaaa\",\n" 961 " // B\n" 962 " \"aaaaa\"};"); 963 verifyGoogleFormat( 964 "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 965 " aaaaaaaaaaaaaaaaaaaaaa); // 81_cols_with_this_comment"); 966 EXPECT_EQ("D(a, {\n" 967 " // test\n" 968 " int a;\n" 969 "});", 970 format("D(a, {\n" 971 "// test\n" 972 "int a;\n" 973 "});")); 974 975 EXPECT_EQ("lineWith(); // comment\n" 976 "// at start\n" 977 "otherLine();", 978 format("lineWith(); // comment\n" 979 "// at start\n" 980 "otherLine();")); 981 EXPECT_EQ("lineWith(); // comment\n" 982 "/*\n" 983 " * at start */\n" 984 "otherLine();", 985 format("lineWith(); // comment\n" 986 "/*\n" 987 " * at start */\n" 988 "otherLine();")); 989 EXPECT_EQ("lineWith(); // comment\n" 990 " // at start\n" 991 "otherLine();", 992 format("lineWith(); // comment\n" 993 " // at start\n" 994 "otherLine();")); 995 996 EXPECT_EQ("lineWith(); // comment\n" 997 "// at start\n" 998 "otherLine(); // comment", 999 format("lineWith(); // comment\n" 1000 "// at start\n" 1001 "otherLine(); // comment")); 1002 EXPECT_EQ("lineWith();\n" 1003 "// at start\n" 1004 "otherLine(); // comment", 1005 format("lineWith();\n" 1006 " // at start\n" 1007 "otherLine(); // comment")); 1008 EXPECT_EQ("// first\n" 1009 "// at start\n" 1010 "otherLine(); // comment", 1011 format("// first\n" 1012 " // at start\n" 1013 "otherLine(); // comment")); 1014 EXPECT_EQ("f();\n" 1015 "// first\n" 1016 "// at start\n" 1017 "otherLine(); // comment", 1018 format("f();\n" 1019 "// first\n" 1020 " // at start\n" 1021 "otherLine(); // comment")); 1022 verifyFormat("f(); // comment\n" 1023 "// first\n" 1024 "// at start\n" 1025 "otherLine();"); 1026 EXPECT_EQ("f(); // comment\n" 1027 "// first\n" 1028 "// at start\n" 1029 "otherLine();", 1030 format("f(); // comment\n" 1031 "// first\n" 1032 " // at start\n" 1033 "otherLine();")); 1034 EXPECT_EQ("f(); // comment\n" 1035 " // first\n" 1036 "// at start\n" 1037 "otherLine();", 1038 format("f(); // comment\n" 1039 " // first\n" 1040 "// at start\n" 1041 "otherLine();")); 1042 EXPECT_EQ("void f() {\n" 1043 " lineWith(); // comment\n" 1044 " // at start\n" 1045 "}", 1046 format("void f() {\n" 1047 " lineWith(); // comment\n" 1048 " // at start\n" 1049 "}")); 1050 EXPECT_EQ("int xy; // a\n" 1051 "int z; // b", 1052 format("int xy; // a\n" 1053 "int z; //b")); 1054 EXPECT_EQ("int xy; // a\n" 1055 "int z; // bb", 1056 format("int xy; // a\n" 1057 "int z; //bb", 1058 getLLVMStyleWithColumns(12))); 1059 1060 verifyFormat("#define A \\\n" 1061 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 1062 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 1063 getLLVMStyleWithColumns(60)); 1064 verifyFormat( 1065 "#define A \\\n" 1066 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 1067 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 1068 getLLVMStyleWithColumns(61)); 1069 1070 verifyFormat("if ( // This is some comment\n" 1071 " x + 3) {\n" 1072 "}"); 1073 EXPECT_EQ("if ( // This is some comment\n" 1074 " // spanning two lines\n" 1075 " x + 3) {\n" 1076 "}", 1077 format("if( // This is some comment\n" 1078 " // spanning two lines\n" 1079 " x + 3) {\n" 1080 "}")); 1081 1082 verifyNoCrash("/\\\n/"); 1083 verifyNoCrash("/\\\n* */"); 1084 // The 0-character somehow makes the lexer return a proper comment. 1085 verifyNoCrash(StringRef("/*\\\0\n/", 6)); 1086 } 1087 1088 TEST_F(FormatTest, KeepsParameterWithTrailingCommentsOnTheirOwnLine) { 1089 EXPECT_EQ("SomeFunction(a,\n" 1090 " b, // comment\n" 1091 " c);", 1092 format("SomeFunction(a,\n" 1093 " b, // comment\n" 1094 " c);")); 1095 EXPECT_EQ("SomeFunction(a, b,\n" 1096 " // comment\n" 1097 " c);", 1098 format("SomeFunction(a,\n" 1099 " b,\n" 1100 " // comment\n" 1101 " c);")); 1102 EXPECT_EQ("SomeFunction(a, b, // comment (unclear relation)\n" 1103 " c);", 1104 format("SomeFunction(a, b, // comment (unclear relation)\n" 1105 " c);")); 1106 EXPECT_EQ("SomeFunction(a, // comment\n" 1107 " b,\n" 1108 " c); // comment", 1109 format("SomeFunction(a, // comment\n" 1110 " b,\n" 1111 " c); // comment")); 1112 } 1113 1114 TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) { 1115 EXPECT_EQ("// comment", format("// comment ")); 1116 EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment", 1117 format("int aaaaaaa, bbbbbbb; // comment ", 1118 getLLVMStyleWithColumns(33))); 1119 EXPECT_EQ("// comment\\\n", format("// comment\\\n \t \v \f ")); 1120 EXPECT_EQ("// comment \\\n", format("// comment \\\n \t \v \f ")); 1121 } 1122 1123 TEST_F(FormatTest, UnderstandsBlockComments) { 1124 verifyFormat("f(/*noSpaceAfterParameterNamingComment=*/true);"); 1125 verifyFormat("void f() { g(/*aaa=*/x, /*bbb=*/!y); }"); 1126 EXPECT_EQ("f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n" 1127 " bbbbbbbbbbbbbbbbbbbbbbbbb);", 1128 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \\\n" 1129 "/* Trailing comment for aa... */\n" 1130 " bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1131 EXPECT_EQ( 1132 "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1133 " /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);", 1134 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \n" 1135 "/* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1136 EXPECT_EQ( 1137 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1138 " aaaaaaaaaaaaaaaaaa,\n" 1139 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1140 "}", 1141 format("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1142 " aaaaaaaaaaaaaaaaaa ,\n" 1143 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1144 "}")); 1145 1146 FormatStyle NoBinPacking = getLLVMStyle(); 1147 NoBinPacking.BinPackParameters = false; 1148 verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n" 1149 " /* parameter 2 */ aaaaaa,\n" 1150 " /* parameter 3 */ aaaaaa,\n" 1151 " /* parameter 4 */ aaaaaa);", 1152 NoBinPacking); 1153 1154 // Aligning block comments in macros. 1155 verifyGoogleFormat("#define A \\\n" 1156 " int i; /*a*/ \\\n" 1157 " int jjj; /*b*/"); 1158 } 1159 1160 TEST_F(FormatTest, AlignsBlockComments) { 1161 EXPECT_EQ("/*\n" 1162 " * Really multi-line\n" 1163 " * comment.\n" 1164 " */\n" 1165 "void f() {}", 1166 format(" /*\n" 1167 " * Really multi-line\n" 1168 " * comment.\n" 1169 " */\n" 1170 " void f() {}")); 1171 EXPECT_EQ("class C {\n" 1172 " /*\n" 1173 " * Another multi-line\n" 1174 " * comment.\n" 1175 " */\n" 1176 " void f() {}\n" 1177 "};", 1178 format("class C {\n" 1179 "/*\n" 1180 " * Another multi-line\n" 1181 " * comment.\n" 1182 " */\n" 1183 "void f() {}\n" 1184 "};")); 1185 EXPECT_EQ("/*\n" 1186 " 1. This is a comment with non-trivial formatting.\n" 1187 " 1.1. We have to indent/outdent all lines equally\n" 1188 " 1.1.1. to keep the formatting.\n" 1189 " */", 1190 format(" /*\n" 1191 " 1. This is a comment with non-trivial formatting.\n" 1192 " 1.1. We have to indent/outdent all lines equally\n" 1193 " 1.1.1. to keep the formatting.\n" 1194 " */")); 1195 EXPECT_EQ("/*\n" 1196 "Don't try to outdent if there's not enough indentation.\n" 1197 "*/", 1198 format(" /*\n" 1199 " Don't try to outdent if there's not enough indentation.\n" 1200 " */")); 1201 1202 EXPECT_EQ("int i; /* Comment with empty...\n" 1203 " *\n" 1204 " * line. */", 1205 format("int i; /* Comment with empty...\n" 1206 " *\n" 1207 " * line. */")); 1208 EXPECT_EQ("int foobar = 0; /* comment */\n" 1209 "int bar = 0; /* multiline\n" 1210 " comment 1 */\n" 1211 "int baz = 0; /* multiline\n" 1212 " comment 2 */\n" 1213 "int bzz = 0; /* multiline\n" 1214 " comment 3 */", 1215 format("int foobar = 0; /* comment */\n" 1216 "int bar = 0; /* multiline\n" 1217 " comment 1 */\n" 1218 "int baz = 0; /* multiline\n" 1219 " comment 2 */\n" 1220 "int bzz = 0; /* multiline\n" 1221 " comment 3 */")); 1222 EXPECT_EQ("int foobar = 0; /* comment */\n" 1223 "int bar = 0; /* multiline\n" 1224 " comment */\n" 1225 "int baz = 0; /* multiline\n" 1226 "comment */", 1227 format("int foobar = 0; /* comment */\n" 1228 "int bar = 0; /* multiline\n" 1229 "comment */\n" 1230 "int baz = 0; /* multiline\n" 1231 "comment */")); 1232 } 1233 1234 TEST_F(FormatTest, CommentReflowingCanBeTurnedOff) { 1235 FormatStyle Style = getLLVMStyleWithColumns(20); 1236 Style.ReflowComments = false; 1237 verifyFormat("// aaaaaaaaa aaaaaaaaaa aaaaaaaaaa", Style); 1238 verifyFormat("/* aaaaaaaaa aaaaaaaaaa aaaaaaaaaa */", Style); 1239 } 1240 1241 TEST_F(FormatTest, CorrectlyHandlesLengthOfBlockComments) { 1242 EXPECT_EQ("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1243 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */", 1244 format("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1245 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */")); 1246 EXPECT_EQ( 1247 "void ffffffffffff(\n" 1248 " int aaaaaaaa, int bbbbbbbb,\n" 1249 " int cccccccccccc) { /*\n" 1250 " aaaaaaaaaa\n" 1251 " aaaaaaaaaaaaa\n" 1252 " bbbbbbbbbbbbbb\n" 1253 " bbbbbbbbbb\n" 1254 " */\n" 1255 "}", 1256 format("void ffffffffffff(int aaaaaaaa, int bbbbbbbb, int cccccccccccc)\n" 1257 "{ /*\n" 1258 " aaaaaaaaaa aaaaaaaaaaaaa\n" 1259 " bbbbbbbbbbbbbb bbbbbbbbbb\n" 1260 " */\n" 1261 "}", 1262 getLLVMStyleWithColumns(40))); 1263 } 1264 1265 TEST_F(FormatTest, DontBreakNonTrailingBlockComments) { 1266 EXPECT_EQ("void ffffffffff(\n" 1267 " int aaaaa /* test */);", 1268 format("void ffffffffff(int aaaaa /* test */);", 1269 getLLVMStyleWithColumns(35))); 1270 } 1271 1272 TEST_F(FormatTest, SplitsLongCxxComments) { 1273 EXPECT_EQ("// A comment that\n" 1274 "// doesn't fit on\n" 1275 "// one line", 1276 format("// A comment that doesn't fit on one line", 1277 getLLVMStyleWithColumns(20))); 1278 EXPECT_EQ("/// A comment that\n" 1279 "/// doesn't fit on\n" 1280 "/// one line", 1281 format("/// A comment that doesn't fit on one line", 1282 getLLVMStyleWithColumns(20))); 1283 EXPECT_EQ("//! A comment that\n" 1284 "//! doesn't fit on\n" 1285 "//! one line", 1286 format("//! A comment that doesn't fit on one line", 1287 getLLVMStyleWithColumns(20))); 1288 EXPECT_EQ("// a b c d\n" 1289 "// e f g\n" 1290 "// h i j k", 1291 format("// a b c d e f g h i j k", getLLVMStyleWithColumns(10))); 1292 EXPECT_EQ( 1293 "// a b c d\n" 1294 "// e f g\n" 1295 "// h i j k", 1296 format("\\\n// a b c d e f g h i j k", getLLVMStyleWithColumns(10))); 1297 EXPECT_EQ("if (true) // A comment that\n" 1298 " // doesn't fit on\n" 1299 " // one line", 1300 format("if (true) // A comment that doesn't fit on one line ", 1301 getLLVMStyleWithColumns(30))); 1302 EXPECT_EQ("// Don't_touch_leading_whitespace", 1303 format("// Don't_touch_leading_whitespace", 1304 getLLVMStyleWithColumns(20))); 1305 EXPECT_EQ("// Add leading\n" 1306 "// whitespace", 1307 format("//Add leading whitespace", getLLVMStyleWithColumns(20))); 1308 EXPECT_EQ("/// Add leading\n" 1309 "/// whitespace", 1310 format("///Add leading whitespace", getLLVMStyleWithColumns(20))); 1311 EXPECT_EQ("//! Add leading\n" 1312 "//! whitespace", 1313 format("//!Add leading whitespace", getLLVMStyleWithColumns(20))); 1314 EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle())); 1315 EXPECT_EQ("// Even if it makes the line exceed the column\n" 1316 "// limit", 1317 format("//Even if it makes the line exceed the column limit", 1318 getLLVMStyleWithColumns(51))); 1319 EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle())); 1320 1321 EXPECT_EQ("// aa bb cc dd", 1322 format("// aa bb cc dd ", 1323 getLLVMStyleWithColumns(15))); 1324 1325 EXPECT_EQ("// A comment before\n" 1326 "// a macro\n" 1327 "// definition\n" 1328 "#define a b", 1329 format("// A comment before a macro definition\n" 1330 "#define a b", 1331 getLLVMStyleWithColumns(20))); 1332 EXPECT_EQ("void ffffff(\n" 1333 " int aaaaaaaaa, // wwww\n" 1334 " int bbbbbbbbbb, // xxxxxxx\n" 1335 " // yyyyyyyyyy\n" 1336 " int c, int d, int e) {}", 1337 format("void ffffff(\n" 1338 " int aaaaaaaaa, // wwww\n" 1339 " int bbbbbbbbbb, // xxxxxxx yyyyyyyyyy\n" 1340 " int c, int d, int e) {}", 1341 getLLVMStyleWithColumns(40))); 1342 EXPECT_EQ("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1343 format("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1344 getLLVMStyleWithColumns(20))); 1345 EXPECT_EQ( 1346 "#define XXX // a b c d\n" 1347 " // e f g h", 1348 format("#define XXX // a b c d e f g h", getLLVMStyleWithColumns(22))); 1349 EXPECT_EQ( 1350 "#define XXX // q w e r\n" 1351 " // t y u i", 1352 format("#define XXX //q w e r t y u i", getLLVMStyleWithColumns(22))); 1353 } 1354 1355 TEST_F(FormatTest, PreservesHangingIndentInCxxComments) { 1356 EXPECT_EQ("// A comment\n" 1357 "// that doesn't\n" 1358 "// fit on one\n" 1359 "// line", 1360 format("// A comment that doesn't fit on one line", 1361 getLLVMStyleWithColumns(20))); 1362 EXPECT_EQ("/// A comment\n" 1363 "/// that doesn't\n" 1364 "/// fit on one\n" 1365 "/// line", 1366 format("/// A comment that doesn't fit on one line", 1367 getLLVMStyleWithColumns(20))); 1368 } 1369 1370 TEST_F(FormatTest, DontSplitLineCommentsWithEscapedNewlines) { 1371 EXPECT_EQ("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1372 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1373 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1374 format("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1375 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1376 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")); 1377 EXPECT_EQ("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1378 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1379 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1380 format("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1381 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1382 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1383 getLLVMStyleWithColumns(50))); 1384 // FIXME: One day we might want to implement adjustment of leading whitespace 1385 // of the consecutive lines in this kind of comment: 1386 EXPECT_EQ("double\n" 1387 " a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1388 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1389 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1390 format("double a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1391 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1392 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1393 getLLVMStyleWithColumns(49))); 1394 } 1395 1396 TEST_F(FormatTest, DontSplitLineCommentsWithPragmas) { 1397 FormatStyle Pragmas = getLLVMStyleWithColumns(30); 1398 Pragmas.CommentPragmas = "^ IWYU pragma:"; 1399 EXPECT_EQ( 1400 "// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", 1401 format("// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", Pragmas)); 1402 EXPECT_EQ( 1403 "/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", 1404 format("/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", Pragmas)); 1405 } 1406 1407 TEST_F(FormatTest, PriorityOfCommentBreaking) { 1408 EXPECT_EQ("if (xxx ==\n" 1409 " yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1410 " zzz)\n" 1411 " q();", 1412 format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1413 " zzz) q();", 1414 getLLVMStyleWithColumns(40))); 1415 EXPECT_EQ("if (xxxxxxxxxx ==\n" 1416 " yyy && // aaaaaa bbbbbbbb cccc\n" 1417 " zzz)\n" 1418 " q();", 1419 format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n" 1420 " zzz) q();", 1421 getLLVMStyleWithColumns(40))); 1422 EXPECT_EQ("if (xxxxxxxxxx &&\n" 1423 " yyy || // aaaaaa bbbbbbbb cccc\n" 1424 " zzz)\n" 1425 " q();", 1426 format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n" 1427 " zzz) q();", 1428 getLLVMStyleWithColumns(40))); 1429 EXPECT_EQ("fffffffff(\n" 1430 " &xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1431 " zzz);", 1432 format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1433 " zzz);", 1434 getLLVMStyleWithColumns(40))); 1435 } 1436 1437 TEST_F(FormatTest, MultiLineCommentsInDefines) { 1438 EXPECT_EQ("#define A(x) /* \\\n" 1439 " a comment \\\n" 1440 " inside */ \\\n" 1441 " f();", 1442 format("#define A(x) /* \\\n" 1443 " a comment \\\n" 1444 " inside */ \\\n" 1445 " f();", 1446 getLLVMStyleWithColumns(17))); 1447 EXPECT_EQ("#define A( \\\n" 1448 " x) /* \\\n" 1449 " a comment \\\n" 1450 " inside */ \\\n" 1451 " f();", 1452 format("#define A( \\\n" 1453 " x) /* \\\n" 1454 " a comment \\\n" 1455 " inside */ \\\n" 1456 " f();", 1457 getLLVMStyleWithColumns(17))); 1458 } 1459 1460 TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) { 1461 EXPECT_EQ("namespace {}\n// Test\n#define A", 1462 format("namespace {}\n // Test\n#define A")); 1463 EXPECT_EQ("namespace {}\n/* Test */\n#define A", 1464 format("namespace {}\n /* Test */\n#define A")); 1465 EXPECT_EQ("namespace {}\n/* Test */ #define A", 1466 format("namespace {}\n /* Test */ #define A")); 1467 } 1468 1469 TEST_F(FormatTest, SplitsLongLinesInComments) { 1470 EXPECT_EQ("/* This is a long\n" 1471 " * comment that\n" 1472 " * doesn't\n" 1473 " * fit on one line.\n" 1474 " */", 1475 format("/* " 1476 "This is a long " 1477 "comment that " 1478 "doesn't " 1479 "fit on one line. */", 1480 getLLVMStyleWithColumns(20))); 1481 EXPECT_EQ( 1482 "/* a b c d\n" 1483 " * e f g\n" 1484 " * h i j k\n" 1485 " */", 1486 format("/* a b c d e f g h i j k */", getLLVMStyleWithColumns(10))); 1487 EXPECT_EQ( 1488 "/* a b c d\n" 1489 " * e f g\n" 1490 " * h i j k\n" 1491 " */", 1492 format("\\\n/* a b c d e f g h i j k */", getLLVMStyleWithColumns(10))); 1493 EXPECT_EQ("/*\n" 1494 "This is a long\n" 1495 "comment that doesn't\n" 1496 "fit on one line.\n" 1497 "*/", 1498 format("/*\n" 1499 "This is a long " 1500 "comment that doesn't " 1501 "fit on one line. \n" 1502 "*/", 1503 getLLVMStyleWithColumns(20))); 1504 EXPECT_EQ("/*\n" 1505 " * This is a long\n" 1506 " * comment that\n" 1507 " * doesn't fit on\n" 1508 " * one line.\n" 1509 " */", 1510 format("/* \n" 1511 " * This is a long " 1512 " comment that " 1513 " doesn't fit on " 1514 " one line. \n" 1515 " */", 1516 getLLVMStyleWithColumns(20))); 1517 EXPECT_EQ("/*\n" 1518 " * This_is_a_comment_with_words_that_dont_fit_on_one_line\n" 1519 " * so_it_should_be_broken\n" 1520 " * wherever_a_space_occurs\n" 1521 " */", 1522 format("/*\n" 1523 " * This_is_a_comment_with_words_that_dont_fit_on_one_line " 1524 " so_it_should_be_broken " 1525 " wherever_a_space_occurs \n" 1526 " */", 1527 getLLVMStyleWithColumns(20))); 1528 EXPECT_EQ("/*\n" 1529 " * This_comment_can_not_be_broken_into_lines\n" 1530 " */", 1531 format("/*\n" 1532 " * This_comment_can_not_be_broken_into_lines\n" 1533 " */", 1534 getLLVMStyleWithColumns(20))); 1535 EXPECT_EQ("{\n" 1536 " /*\n" 1537 " This is another\n" 1538 " long comment that\n" 1539 " doesn't fit on one\n" 1540 " line 1234567890\n" 1541 " */\n" 1542 "}", 1543 format("{\n" 1544 "/*\n" 1545 "This is another " 1546 " long comment that " 1547 " doesn't fit on one" 1548 " line 1234567890\n" 1549 "*/\n" 1550 "}", 1551 getLLVMStyleWithColumns(20))); 1552 EXPECT_EQ("{\n" 1553 " /*\n" 1554 " * This i s\n" 1555 " * another comment\n" 1556 " * t hat doesn' t\n" 1557 " * fit on one l i\n" 1558 " * n e\n" 1559 " */\n" 1560 "}", 1561 format("{\n" 1562 "/*\n" 1563 " * This i s" 1564 " another comment" 1565 " t hat doesn' t" 1566 " fit on one l i" 1567 " n e\n" 1568 " */\n" 1569 "}", 1570 getLLVMStyleWithColumns(20))); 1571 EXPECT_EQ("/*\n" 1572 " * This is a long\n" 1573 " * comment that\n" 1574 " * doesn't fit on\n" 1575 " * one line\n" 1576 " */", 1577 format(" /*\n" 1578 " * This is a long comment that doesn't fit on one line\n" 1579 " */", 1580 getLLVMStyleWithColumns(20))); 1581 EXPECT_EQ("{\n" 1582 " if (something) /* This is a\n" 1583 " long\n" 1584 " comment */\n" 1585 " ;\n" 1586 "}", 1587 format("{\n" 1588 " if (something) /* This is a long comment */\n" 1589 " ;\n" 1590 "}", 1591 getLLVMStyleWithColumns(30))); 1592 1593 EXPECT_EQ("/* A comment before\n" 1594 " * a macro\n" 1595 " * definition */\n" 1596 "#define a b", 1597 format("/* A comment before a macro definition */\n" 1598 "#define a b", 1599 getLLVMStyleWithColumns(20))); 1600 1601 EXPECT_EQ("/* some comment\n" 1602 " * a comment\n" 1603 "* that we break\n" 1604 " * another comment\n" 1605 "* we have to break\n" 1606 "* a left comment\n" 1607 " */", 1608 format(" /* some comment\n" 1609 " * a comment that we break\n" 1610 " * another comment we have to break\n" 1611 "* a left comment\n" 1612 " */", 1613 getLLVMStyleWithColumns(20))); 1614 1615 EXPECT_EQ("/**\n" 1616 " * multiline block\n" 1617 " * comment\n" 1618 " *\n" 1619 " */", 1620 format("/**\n" 1621 " * multiline block comment\n" 1622 " *\n" 1623 " */", 1624 getLLVMStyleWithColumns(20))); 1625 1626 EXPECT_EQ("/*\n" 1627 "\n" 1628 "\n" 1629 " */\n", 1630 format(" /* \n" 1631 " \n" 1632 " \n" 1633 " */\n")); 1634 1635 EXPECT_EQ("/* a a */", 1636 format("/* a a */", getLLVMStyleWithColumns(15))); 1637 EXPECT_EQ("/* a a bc */", 1638 format("/* a a bc */", getLLVMStyleWithColumns(15))); 1639 EXPECT_EQ("/* aaa aaa\n" 1640 " * aaaaa */", 1641 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1642 EXPECT_EQ("/* aaa aaa\n" 1643 " * aaaaa */", 1644 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1645 } 1646 1647 TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) { 1648 EXPECT_EQ("#define X \\\n" 1649 " /* \\\n" 1650 " Test \\\n" 1651 " Macro comment \\\n" 1652 " with a long \\\n" 1653 " line \\\n" 1654 " */ \\\n" 1655 " A + B", 1656 format("#define X \\\n" 1657 " /*\n" 1658 " Test\n" 1659 " Macro comment with a long line\n" 1660 " */ \\\n" 1661 " A + B", 1662 getLLVMStyleWithColumns(20))); 1663 EXPECT_EQ("#define X \\\n" 1664 " /* Macro comment \\\n" 1665 " with a long \\\n" 1666 " line */ \\\n" 1667 " A + B", 1668 format("#define X \\\n" 1669 " /* Macro comment with a long\n" 1670 " line */ \\\n" 1671 " A + B", 1672 getLLVMStyleWithColumns(20))); 1673 EXPECT_EQ("#define X \\\n" 1674 " /* Macro comment \\\n" 1675 " * with a long \\\n" 1676 " * line */ \\\n" 1677 " A + B", 1678 format("#define X \\\n" 1679 " /* Macro comment with a long line */ \\\n" 1680 " A + B", 1681 getLLVMStyleWithColumns(20))); 1682 } 1683 1684 TEST_F(FormatTest, CommentsInStaticInitializers) { 1685 EXPECT_EQ( 1686 "static SomeType type = {aaaaaaaaaaaaaaaaaaaa, /* comment */\n" 1687 " aaaaaaaaaaaaaaaaaaaa /* comment */,\n" 1688 " /* comment */ aaaaaaaaaaaaaaaaaaaa,\n" 1689 " aaaaaaaaaaaaaaaaaaaa, // comment\n" 1690 " aaaaaaaaaaaaaaaaaaaa};", 1691 format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa , /* comment */\n" 1692 " aaaaaaaaaaaaaaaaaaaa /* comment */ ,\n" 1693 " /* comment */ aaaaaaaaaaaaaaaaaaaa ,\n" 1694 " aaaaaaaaaaaaaaaaaaaa , // comment\n" 1695 " aaaaaaaaaaaaaaaaaaaa };")); 1696 verifyFormat("static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1697 " bbbbbbbbbbb, ccccccccccc};"); 1698 verifyFormat("static SomeType type = {aaaaaaaaaaa,\n" 1699 " // comment for bb....\n" 1700 " bbbbbbbbbbb, ccccccccccc};"); 1701 verifyGoogleFormat( 1702 "static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1703 " bbbbbbbbbbb, ccccccccccc};"); 1704 verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n" 1705 " // comment for bb....\n" 1706 " bbbbbbbbbbb, ccccccccccc};"); 1707 1708 verifyFormat("S s = {{a, b, c}, // Group #1\n" 1709 " {d, e, f}, // Group #2\n" 1710 " {g, h, i}}; // Group #3"); 1711 verifyFormat("S s = {{// Group #1\n" 1712 " a, b, c},\n" 1713 " {// Group #2\n" 1714 " d, e, f},\n" 1715 " {// Group #3\n" 1716 " g, h, i}};"); 1717 1718 EXPECT_EQ("S s = {\n" 1719 " // Some comment\n" 1720 " a,\n" 1721 "\n" 1722 " // Comment after empty line\n" 1723 " b}", 1724 format("S s = {\n" 1725 " // Some comment\n" 1726 " a,\n" 1727 " \n" 1728 " // Comment after empty line\n" 1729 " b\n" 1730 "}")); 1731 EXPECT_EQ("S s = {\n" 1732 " /* Some comment */\n" 1733 " a,\n" 1734 "\n" 1735 " /* Comment after empty line */\n" 1736 " b}", 1737 format("S s = {\n" 1738 " /* Some comment */\n" 1739 " a,\n" 1740 " \n" 1741 " /* Comment after empty line */\n" 1742 " b\n" 1743 "}")); 1744 verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n" 1745 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1746 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1747 " 0x00, 0x00, 0x00, 0x00}; // comment\n"); 1748 } 1749 1750 TEST_F(FormatTest, IgnoresIf0Contents) { 1751 EXPECT_EQ("#if 0\n" 1752 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1753 "#endif\n" 1754 "void f() {}", 1755 format("#if 0\n" 1756 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1757 "#endif\n" 1758 "void f( ) { }")); 1759 EXPECT_EQ("#if false\n" 1760 "void f( ) { }\n" 1761 "#endif\n" 1762 "void g() {}\n", 1763 format("#if false\n" 1764 "void f( ) { }\n" 1765 "#endif\n" 1766 "void g( ) { }\n")); 1767 EXPECT_EQ("enum E {\n" 1768 " One,\n" 1769 " Two,\n" 1770 "#if 0\n" 1771 "Three,\n" 1772 " Four,\n" 1773 "#endif\n" 1774 " Five\n" 1775 "};", 1776 format("enum E {\n" 1777 " One,Two,\n" 1778 "#if 0\n" 1779 "Three,\n" 1780 " Four,\n" 1781 "#endif\n" 1782 " Five};")); 1783 EXPECT_EQ("enum F {\n" 1784 " One,\n" 1785 "#if 1\n" 1786 " Two,\n" 1787 "#if 0\n" 1788 "Three,\n" 1789 " Four,\n" 1790 "#endif\n" 1791 " Five\n" 1792 "#endif\n" 1793 "};", 1794 format("enum F {\n" 1795 "One,\n" 1796 "#if 1\n" 1797 "Two,\n" 1798 "#if 0\n" 1799 "Three,\n" 1800 " Four,\n" 1801 "#endif\n" 1802 "Five\n" 1803 "#endif\n" 1804 "};")); 1805 EXPECT_EQ("enum G {\n" 1806 " One,\n" 1807 "#if 0\n" 1808 "Two,\n" 1809 "#else\n" 1810 " Three,\n" 1811 "#endif\n" 1812 " Four\n" 1813 "};", 1814 format("enum G {\n" 1815 "One,\n" 1816 "#if 0\n" 1817 "Two,\n" 1818 "#else\n" 1819 "Three,\n" 1820 "#endif\n" 1821 "Four\n" 1822 "};")); 1823 EXPECT_EQ("enum H {\n" 1824 " One,\n" 1825 "#if 0\n" 1826 "#ifdef Q\n" 1827 "Two,\n" 1828 "#else\n" 1829 "Three,\n" 1830 "#endif\n" 1831 "#endif\n" 1832 " Four\n" 1833 "};", 1834 format("enum H {\n" 1835 "One,\n" 1836 "#if 0\n" 1837 "#ifdef Q\n" 1838 "Two,\n" 1839 "#else\n" 1840 "Three,\n" 1841 "#endif\n" 1842 "#endif\n" 1843 "Four\n" 1844 "};")); 1845 EXPECT_EQ("enum I {\n" 1846 " One,\n" 1847 "#if /* test */ 0 || 1\n" 1848 "Two,\n" 1849 "Three,\n" 1850 "#endif\n" 1851 " Four\n" 1852 "};", 1853 format("enum I {\n" 1854 "One,\n" 1855 "#if /* test */ 0 || 1\n" 1856 "Two,\n" 1857 "Three,\n" 1858 "#endif\n" 1859 "Four\n" 1860 "};")); 1861 EXPECT_EQ("enum J {\n" 1862 " One,\n" 1863 "#if 0\n" 1864 "#if 0\n" 1865 "Two,\n" 1866 "#else\n" 1867 "Three,\n" 1868 "#endif\n" 1869 "Four,\n" 1870 "#endif\n" 1871 " Five\n" 1872 "};", 1873 format("enum J {\n" 1874 "One,\n" 1875 "#if 0\n" 1876 "#if 0\n" 1877 "Two,\n" 1878 "#else\n" 1879 "Three,\n" 1880 "#endif\n" 1881 "Four,\n" 1882 "#endif\n" 1883 "Five\n" 1884 "};")); 1885 } 1886 1887 //===----------------------------------------------------------------------===// 1888 // Tests for classes, namespaces, etc. 1889 //===----------------------------------------------------------------------===// 1890 1891 TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) { 1892 verifyFormat("class A {};"); 1893 } 1894 1895 TEST_F(FormatTest, UnderstandsAccessSpecifiers) { 1896 verifyFormat("class A {\n" 1897 "public:\n" 1898 "public: // comment\n" 1899 "protected:\n" 1900 "private:\n" 1901 " void f() {}\n" 1902 "};"); 1903 verifyGoogleFormat("class A {\n" 1904 " public:\n" 1905 " protected:\n" 1906 " private:\n" 1907 " void f() {}\n" 1908 "};"); 1909 verifyFormat("class A {\n" 1910 "public slots:\n" 1911 " void f1() {}\n" 1912 "public Q_SLOTS:\n" 1913 " void f2() {}\n" 1914 "protected slots:\n" 1915 " void f3() {}\n" 1916 "protected Q_SLOTS:\n" 1917 " void f4() {}\n" 1918 "private slots:\n" 1919 " void f5() {}\n" 1920 "private Q_SLOTS:\n" 1921 " void f6() {}\n" 1922 "signals:\n" 1923 " void g1();\n" 1924 "Q_SIGNALS:\n" 1925 " void g2();\n" 1926 "};"); 1927 1928 // Don't interpret 'signals' the wrong way. 1929 verifyFormat("signals.set();"); 1930 verifyFormat("for (Signals signals : f()) {\n}"); 1931 verifyFormat("{\n" 1932 " signals.set(); // This needs indentation.\n" 1933 "}"); 1934 } 1935 1936 TEST_F(FormatTest, SeparatesLogicalBlocks) { 1937 EXPECT_EQ("class A {\n" 1938 "public:\n" 1939 " void f();\n" 1940 "\n" 1941 "private:\n" 1942 " void g() {}\n" 1943 " // test\n" 1944 "protected:\n" 1945 " int h;\n" 1946 "};", 1947 format("class A {\n" 1948 "public:\n" 1949 "void f();\n" 1950 "private:\n" 1951 "void g() {}\n" 1952 "// test\n" 1953 "protected:\n" 1954 "int h;\n" 1955 "};")); 1956 EXPECT_EQ("class A {\n" 1957 "protected:\n" 1958 "public:\n" 1959 " void f();\n" 1960 "};", 1961 format("class A {\n" 1962 "protected:\n" 1963 "\n" 1964 "public:\n" 1965 "\n" 1966 " void f();\n" 1967 "};")); 1968 1969 // Even ensure proper spacing inside macros. 1970 EXPECT_EQ("#define B \\\n" 1971 " class A { \\\n" 1972 " protected: \\\n" 1973 " public: \\\n" 1974 " void f(); \\\n" 1975 " };", 1976 format("#define B \\\n" 1977 " class A { \\\n" 1978 " protected: \\\n" 1979 " \\\n" 1980 " public: \\\n" 1981 " \\\n" 1982 " void f(); \\\n" 1983 " };", 1984 getGoogleStyle())); 1985 // But don't remove empty lines after macros ending in access specifiers. 1986 EXPECT_EQ("#define A private:\n" 1987 "\n" 1988 "int i;", 1989 format("#define A private:\n" 1990 "\n" 1991 "int i;")); 1992 } 1993 1994 TEST_F(FormatTest, FormatsClasses) { 1995 verifyFormat("class A : public B {};"); 1996 verifyFormat("class A : public ::B {};"); 1997 1998 verifyFormat( 1999 "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 2000 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 2001 verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n" 2002 " : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 2003 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 2004 verifyFormat( 2005 "class A : public B, public C, public D, public E, public F {};"); 2006 verifyFormat("class AAAAAAAAAAAA : public B,\n" 2007 " public C,\n" 2008 " public D,\n" 2009 " public E,\n" 2010 " public F,\n" 2011 " public G {};"); 2012 2013 verifyFormat("class\n" 2014 " ReallyReallyLongClassName {\n" 2015 " int i;\n" 2016 "};", 2017 getLLVMStyleWithColumns(32)); 2018 verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n" 2019 " aaaaaaaaaaaaaaaa> {};"); 2020 verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n" 2021 " : public aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaa,\n" 2022 " aaaaaaaaaaaaaaaaaaaaaa> {};"); 2023 verifyFormat("template <class R, class C>\n" 2024 "struct Aaaaaaaaaaaaaaaaa<R (C::*)(int) const>\n" 2025 " : Aaaaaaaaaaaaaaaaa<R (C::*)(int)> {};"); 2026 verifyFormat("class ::A::B {};"); 2027 } 2028 2029 TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) { 2030 verifyFormat("class A {\n} a, b;"); 2031 verifyFormat("struct A {\n} a, b;"); 2032 verifyFormat("union A {\n} a;"); 2033 } 2034 2035 TEST_F(FormatTest, FormatsEnum) { 2036 verifyFormat("enum {\n" 2037 " Zero,\n" 2038 " One = 1,\n" 2039 " Two = One + 1,\n" 2040 " Three = (One + Two),\n" 2041 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2042 " Five = (One, Two, Three, Four, 5)\n" 2043 "};"); 2044 verifyGoogleFormat("enum {\n" 2045 " Zero,\n" 2046 " One = 1,\n" 2047 " Two = One + 1,\n" 2048 " Three = (One + Two),\n" 2049 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2050 " Five = (One, Two, Three, Four, 5)\n" 2051 "};"); 2052 verifyFormat("enum Enum {};"); 2053 verifyFormat("enum {};"); 2054 verifyFormat("enum X E {} d;"); 2055 verifyFormat("enum __attribute__((...)) E {} d;"); 2056 verifyFormat("enum __declspec__((...)) E {} d;"); 2057 verifyFormat("enum {\n" 2058 " Bar = Foo<int, int>::value\n" 2059 "};", 2060 getLLVMStyleWithColumns(30)); 2061 2062 verifyFormat("enum ShortEnum { A, B, C };"); 2063 verifyGoogleFormat("enum ShortEnum { A, B, C };"); 2064 2065 EXPECT_EQ("enum KeepEmptyLines {\n" 2066 " ONE,\n" 2067 "\n" 2068 " TWO,\n" 2069 "\n" 2070 " THREE\n" 2071 "}", 2072 format("enum KeepEmptyLines {\n" 2073 " ONE,\n" 2074 "\n" 2075 " TWO,\n" 2076 "\n" 2077 "\n" 2078 " THREE\n" 2079 "}")); 2080 verifyFormat("enum E { // comment\n" 2081 " ONE,\n" 2082 " TWO\n" 2083 "};\n" 2084 "int i;"); 2085 // Not enums. 2086 verifyFormat("enum X f() {\n" 2087 " a();\n" 2088 " return 42;\n" 2089 "}"); 2090 verifyFormat("enum X Type::f() {\n" 2091 " a();\n" 2092 " return 42;\n" 2093 "}"); 2094 verifyFormat("enum ::X f() {\n" 2095 " a();\n" 2096 " return 42;\n" 2097 "}"); 2098 verifyFormat("enum ns::X f() {\n" 2099 " a();\n" 2100 " return 42;\n" 2101 "}"); 2102 } 2103 2104 TEST_F(FormatTest, FormatsEnumsWithErrors) { 2105 verifyFormat("enum Type {\n" 2106 " One = 0; // These semicolons should be commas.\n" 2107 " Two = 1;\n" 2108 "};"); 2109 verifyFormat("namespace n {\n" 2110 "enum Type {\n" 2111 " One,\n" 2112 " Two, // missing };\n" 2113 " int i;\n" 2114 "}\n" 2115 "void g() {}"); 2116 } 2117 2118 TEST_F(FormatTest, FormatsEnumStruct) { 2119 verifyFormat("enum struct {\n" 2120 " Zero,\n" 2121 " One = 1,\n" 2122 " Two = One + 1,\n" 2123 " Three = (One + Two),\n" 2124 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2125 " Five = (One, Two, Three, Four, 5)\n" 2126 "};"); 2127 verifyFormat("enum struct Enum {};"); 2128 verifyFormat("enum struct {};"); 2129 verifyFormat("enum struct X E {} d;"); 2130 verifyFormat("enum struct __attribute__((...)) E {} d;"); 2131 verifyFormat("enum struct __declspec__((...)) E {} d;"); 2132 verifyFormat("enum struct X f() {\n a();\n return 42;\n}"); 2133 } 2134 2135 TEST_F(FormatTest, FormatsEnumClass) { 2136 verifyFormat("enum class {\n" 2137 " Zero,\n" 2138 " One = 1,\n" 2139 " Two = One + 1,\n" 2140 " Three = (One + Two),\n" 2141 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2142 " Five = (One, Two, Three, Four, 5)\n" 2143 "};"); 2144 verifyFormat("enum class Enum {};"); 2145 verifyFormat("enum class {};"); 2146 verifyFormat("enum class X E {} d;"); 2147 verifyFormat("enum class __attribute__((...)) E {} d;"); 2148 verifyFormat("enum class __declspec__((...)) E {} d;"); 2149 verifyFormat("enum class X f() {\n a();\n return 42;\n}"); 2150 } 2151 2152 TEST_F(FormatTest, FormatsEnumTypes) { 2153 verifyFormat("enum X : int {\n" 2154 " A, // Force multiple lines.\n" 2155 " B\n" 2156 "};"); 2157 verifyFormat("enum X : int { A, B };"); 2158 verifyFormat("enum X : std::uint32_t { A, B };"); 2159 } 2160 2161 TEST_F(FormatTest, FormatsNSEnums) { 2162 verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }"); 2163 verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n" 2164 " // Information about someDecentlyLongValue.\n" 2165 " someDecentlyLongValue,\n" 2166 " // Information about anotherDecentlyLongValue.\n" 2167 " anotherDecentlyLongValue,\n" 2168 " // Information about aThirdDecentlyLongValue.\n" 2169 " aThirdDecentlyLongValue\n" 2170 "};"); 2171 verifyGoogleFormat("typedef NS_OPTIONS(NSInteger, MyType) {\n" 2172 " a = 1,\n" 2173 " b = 2,\n" 2174 " c = 3,\n" 2175 "};"); 2176 verifyGoogleFormat("typedef CF_ENUM(NSInteger, MyType) {\n" 2177 " a = 1,\n" 2178 " b = 2,\n" 2179 " c = 3,\n" 2180 "};"); 2181 verifyGoogleFormat("typedef CF_OPTIONS(NSInteger, MyType) {\n" 2182 " a = 1,\n" 2183 " b = 2,\n" 2184 " c = 3,\n" 2185 "};"); 2186 } 2187 2188 TEST_F(FormatTest, FormatsBitfields) { 2189 verifyFormat("struct Bitfields {\n" 2190 " unsigned sClass : 8;\n" 2191 " unsigned ValueKind : 2;\n" 2192 "};"); 2193 verifyFormat("struct A {\n" 2194 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n" 2195 " bbbbbbbbbbbbbbbbbbbbbbbbb;\n" 2196 "};"); 2197 verifyFormat("struct MyStruct {\n" 2198 " uchar data;\n" 2199 " uchar : 8;\n" 2200 " uchar : 8;\n" 2201 " uchar other;\n" 2202 "};"); 2203 } 2204 2205 TEST_F(FormatTest, FormatsNamespaces) { 2206 verifyFormat("namespace some_namespace {\n" 2207 "class A {};\n" 2208 "void f() { f(); }\n" 2209 "}"); 2210 verifyFormat("namespace {\n" 2211 "class A {};\n" 2212 "void f() { f(); }\n" 2213 "}"); 2214 verifyFormat("inline namespace X {\n" 2215 "class A {};\n" 2216 "void f() { f(); }\n" 2217 "}"); 2218 verifyFormat("using namespace some_namespace;\n" 2219 "class A {};\n" 2220 "void f() { f(); }"); 2221 2222 // This code is more common than we thought; if we 2223 // layout this correctly the semicolon will go into 2224 // its own line, which is undesirable. 2225 verifyFormat("namespace {};"); 2226 verifyFormat("namespace {\n" 2227 "class A {};\n" 2228 "};"); 2229 2230 verifyFormat("namespace {\n" 2231 "int SomeVariable = 0; // comment\n" 2232 "} // namespace"); 2233 EXPECT_EQ("#ifndef HEADER_GUARD\n" 2234 "#define HEADER_GUARD\n" 2235 "namespace my_namespace {\n" 2236 "int i;\n" 2237 "} // my_namespace\n" 2238 "#endif // HEADER_GUARD", 2239 format("#ifndef HEADER_GUARD\n" 2240 " #define HEADER_GUARD\n" 2241 " namespace my_namespace {\n" 2242 "int i;\n" 2243 "} // my_namespace\n" 2244 "#endif // HEADER_GUARD")); 2245 2246 EXPECT_EQ("namespace A::B {\n" 2247 "class C {};\n" 2248 "}", 2249 format("namespace A::B {\n" 2250 "class C {};\n" 2251 "}")); 2252 2253 FormatStyle Style = getLLVMStyle(); 2254 Style.NamespaceIndentation = FormatStyle::NI_All; 2255 EXPECT_EQ("namespace out {\n" 2256 " int i;\n" 2257 " namespace in {\n" 2258 " int i;\n" 2259 " } // namespace\n" 2260 "} // namespace", 2261 format("namespace out {\n" 2262 "int i;\n" 2263 "namespace in {\n" 2264 "int i;\n" 2265 "} // namespace\n" 2266 "} // namespace", 2267 Style)); 2268 2269 Style.NamespaceIndentation = FormatStyle::NI_Inner; 2270 EXPECT_EQ("namespace out {\n" 2271 "int i;\n" 2272 "namespace in {\n" 2273 " int i;\n" 2274 "} // namespace\n" 2275 "} // namespace", 2276 format("namespace out {\n" 2277 "int i;\n" 2278 "namespace in {\n" 2279 "int i;\n" 2280 "} // namespace\n" 2281 "} // namespace", 2282 Style)); 2283 } 2284 2285 TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); } 2286 2287 TEST_F(FormatTest, FormatsInlineASM) { 2288 verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));"); 2289 verifyFormat("asm(\"nop\" ::: \"memory\");"); 2290 verifyFormat( 2291 "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n" 2292 " \"cpuid\\n\\t\"\n" 2293 " \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n" 2294 " : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n" 2295 " : \"a\"(value));"); 2296 EXPECT_EQ( 2297 "void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2298 " __asm {\n" 2299 " mov edx,[that] // vtable in edx\n" 2300 " mov eax,methodIndex\n" 2301 " call [edx][eax*4] // stdcall\n" 2302 " }\n" 2303 "}", 2304 format("void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2305 " __asm {\n" 2306 " mov edx,[that] // vtable in edx\n" 2307 " mov eax,methodIndex\n" 2308 " call [edx][eax*4] // stdcall\n" 2309 " }\n" 2310 "}")); 2311 EXPECT_EQ("_asm {\n" 2312 " xor eax, eax;\n" 2313 " cpuid;\n" 2314 "}", 2315 format("_asm {\n" 2316 " xor eax, eax;\n" 2317 " cpuid;\n" 2318 "}")); 2319 verifyFormat("void function() {\n" 2320 " // comment\n" 2321 " asm(\"\");\n" 2322 "}"); 2323 EXPECT_EQ("__asm {\n" 2324 "}\n" 2325 "int i;", 2326 format("__asm {\n" 2327 "}\n" 2328 "int i;")); 2329 } 2330 2331 TEST_F(FormatTest, FormatTryCatch) { 2332 verifyFormat("try {\n" 2333 " throw a * b;\n" 2334 "} catch (int a) {\n" 2335 " // Do nothing.\n" 2336 "} catch (...) {\n" 2337 " exit(42);\n" 2338 "}"); 2339 2340 // Function-level try statements. 2341 verifyFormat("int f() try { return 4; } catch (...) {\n" 2342 " return 5;\n" 2343 "}"); 2344 verifyFormat("class A {\n" 2345 " int a;\n" 2346 " A() try : a(0) {\n" 2347 " } catch (...) {\n" 2348 " throw;\n" 2349 " }\n" 2350 "};\n"); 2351 2352 // Incomplete try-catch blocks. 2353 verifyIncompleteFormat("try {} catch ("); 2354 } 2355 2356 TEST_F(FormatTest, FormatSEHTryCatch) { 2357 verifyFormat("__try {\n" 2358 " int a = b * c;\n" 2359 "} __except (EXCEPTION_EXECUTE_HANDLER) {\n" 2360 " // Do nothing.\n" 2361 "}"); 2362 2363 verifyFormat("__try {\n" 2364 " int a = b * c;\n" 2365 "} __finally {\n" 2366 " // Do nothing.\n" 2367 "}"); 2368 2369 verifyFormat("DEBUG({\n" 2370 " __try {\n" 2371 " } __finally {\n" 2372 " }\n" 2373 "});\n"); 2374 } 2375 2376 TEST_F(FormatTest, IncompleteTryCatchBlocks) { 2377 verifyFormat("try {\n" 2378 " f();\n" 2379 "} catch {\n" 2380 " g();\n" 2381 "}"); 2382 verifyFormat("try {\n" 2383 " f();\n" 2384 "} catch (A a) MACRO(x) {\n" 2385 " g();\n" 2386 "} catch (B b) MACRO(x) {\n" 2387 " g();\n" 2388 "}"); 2389 } 2390 2391 TEST_F(FormatTest, FormatTryCatchBraceStyles) { 2392 FormatStyle Style = getLLVMStyle(); 2393 for (auto BraceStyle : {FormatStyle::BS_Attach, FormatStyle::BS_Mozilla, 2394 FormatStyle::BS_WebKit}) { 2395 Style.BreakBeforeBraces = BraceStyle; 2396 verifyFormat("try {\n" 2397 " // something\n" 2398 "} catch (...) {\n" 2399 " // something\n" 2400 "}", 2401 Style); 2402 } 2403 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 2404 verifyFormat("try {\n" 2405 " // something\n" 2406 "}\n" 2407 "catch (...) {\n" 2408 " // something\n" 2409 "}", 2410 Style); 2411 verifyFormat("__try {\n" 2412 " // something\n" 2413 "}\n" 2414 "__finally {\n" 2415 " // something\n" 2416 "}", 2417 Style); 2418 verifyFormat("@try {\n" 2419 " // something\n" 2420 "}\n" 2421 "@finally {\n" 2422 " // something\n" 2423 "}", 2424 Style); 2425 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 2426 verifyFormat("try\n" 2427 "{\n" 2428 " // something\n" 2429 "}\n" 2430 "catch (...)\n" 2431 "{\n" 2432 " // something\n" 2433 "}", 2434 Style); 2435 Style.BreakBeforeBraces = FormatStyle::BS_GNU; 2436 verifyFormat("try\n" 2437 " {\n" 2438 " // something\n" 2439 " }\n" 2440 "catch (...)\n" 2441 " {\n" 2442 " // something\n" 2443 " }", 2444 Style); 2445 Style.BreakBeforeBraces = FormatStyle::BS_Custom; 2446 Style.BraceWrapping.BeforeCatch = true; 2447 verifyFormat("try {\n" 2448 " // something\n" 2449 "}\n" 2450 "catch (...) {\n" 2451 " // something\n" 2452 "}", 2453 Style); 2454 } 2455 2456 TEST_F(FormatTest, FormatObjCTryCatch) { 2457 verifyFormat("@try {\n" 2458 " f();\n" 2459 "} @catch (NSException e) {\n" 2460 " @throw;\n" 2461 "} @finally {\n" 2462 " exit(42);\n" 2463 "}"); 2464 verifyFormat("DEBUG({\n" 2465 " @try {\n" 2466 " } @finally {\n" 2467 " }\n" 2468 "});\n"); 2469 } 2470 2471 TEST_F(FormatTest, FormatObjCAutoreleasepool) { 2472 FormatStyle Style = getLLVMStyle(); 2473 verifyFormat("@autoreleasepool {\n" 2474 " f();\n" 2475 "}\n" 2476 "@autoreleasepool {\n" 2477 " f();\n" 2478 "}\n", 2479 Style); 2480 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 2481 verifyFormat("@autoreleasepool\n" 2482 "{\n" 2483 " f();\n" 2484 "}\n" 2485 "@autoreleasepool\n" 2486 "{\n" 2487 " f();\n" 2488 "}\n", 2489 Style); 2490 } 2491 2492 TEST_F(FormatTest, StaticInitializers) { 2493 verifyFormat("static SomeClass SC = {1, 'a'};"); 2494 2495 verifyFormat("static SomeClass WithALoooooooooooooooooooongName = {\n" 2496 " 100000000, " 2497 "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};"); 2498 2499 // Here, everything other than the "}" would fit on a line. 2500 verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n" 2501 " 10000000000000000000000000};"); 2502 EXPECT_EQ("S s = {a,\n" 2503 "\n" 2504 " b};", 2505 format("S s = {\n" 2506 " a,\n" 2507 "\n" 2508 " b\n" 2509 "};")); 2510 2511 // FIXME: This would fit into the column limit if we'd fit "{ {" on the first 2512 // line. However, the formatting looks a bit off and this probably doesn't 2513 // happen often in practice. 2514 verifyFormat("static int Variable[1] = {\n" 2515 " {1000000000000000000000000000000000000}};", 2516 getLLVMStyleWithColumns(40)); 2517 } 2518 2519 TEST_F(FormatTest, DesignatedInitializers) { 2520 verifyFormat("const struct A a = {.a = 1, .b = 2};"); 2521 verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n" 2522 " .bbbbbbbbbb = 2,\n" 2523 " .cccccccccc = 3,\n" 2524 " .dddddddddd = 4,\n" 2525 " .eeeeeeeeee = 5};"); 2526 verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n" 2527 " .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n" 2528 " .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n" 2529 " .ccccccccccccccccccccccccccc = 3,\n" 2530 " .ddddddddddddddddddddddddddd = 4,\n" 2531 " .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};"); 2532 2533 verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};"); 2534 } 2535 2536 TEST_F(FormatTest, NestedStaticInitializers) { 2537 verifyFormat("static A x = {{{}}};\n"); 2538 verifyFormat("static A x = {{{init1, init2, init3, init4},\n" 2539 " {init1, init2, init3, init4}}};", 2540 getLLVMStyleWithColumns(50)); 2541 2542 verifyFormat("somes Status::global_reps[3] = {\n" 2543 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2544 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2545 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};", 2546 getLLVMStyleWithColumns(60)); 2547 verifyGoogleFormat("SomeType Status::global_reps[3] = {\n" 2548 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2549 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2550 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};"); 2551 verifyFormat("CGRect cg_rect = {{rect.fLeft, rect.fTop},\n" 2552 " {rect.fRight - rect.fLeft, rect.fBottom - " 2553 "rect.fTop}};"); 2554 2555 verifyFormat( 2556 "SomeArrayOfSomeType a = {\n" 2557 " {{1, 2, 3},\n" 2558 " {1, 2, 3},\n" 2559 " {111111111111111111111111111111, 222222222222222222222222222222,\n" 2560 " 333333333333333333333333333333},\n" 2561 " {1, 2, 3},\n" 2562 " {1, 2, 3}}};"); 2563 verifyFormat( 2564 "SomeArrayOfSomeType a = {\n" 2565 " {{1, 2, 3}},\n" 2566 " {{1, 2, 3}},\n" 2567 " {{111111111111111111111111111111, 222222222222222222222222222222,\n" 2568 " 333333333333333333333333333333}},\n" 2569 " {{1, 2, 3}},\n" 2570 " {{1, 2, 3}}};"); 2571 2572 verifyFormat("struct {\n" 2573 " unsigned bit;\n" 2574 " const char *const name;\n" 2575 "} kBitsToOs[] = {{kOsMac, \"Mac\"},\n" 2576 " {kOsWin, \"Windows\"},\n" 2577 " {kOsLinux, \"Linux\"},\n" 2578 " {kOsCrOS, \"Chrome OS\"}};"); 2579 verifyFormat("struct {\n" 2580 " unsigned bit;\n" 2581 " const char *const name;\n" 2582 "} kBitsToOs[] = {\n" 2583 " {kOsMac, \"Mac\"},\n" 2584 " {kOsWin, \"Windows\"},\n" 2585 " {kOsLinux, \"Linux\"},\n" 2586 " {kOsCrOS, \"Chrome OS\"},\n" 2587 "};"); 2588 } 2589 2590 TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) { 2591 verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2592 " \\\n" 2593 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)"); 2594 } 2595 2596 TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) { 2597 verifyFormat("virtual void write(ELFWriter *writerrr,\n" 2598 " OwningPtr<FileOutputBuffer> &buffer) = 0;"); 2599 2600 // Do break defaulted and deleted functions. 2601 verifyFormat("virtual void ~Deeeeeeeestructor() =\n" 2602 " default;", 2603 getLLVMStyleWithColumns(40)); 2604 verifyFormat("virtual void ~Deeeeeeeestructor() =\n" 2605 " delete;", 2606 getLLVMStyleWithColumns(40)); 2607 } 2608 2609 TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) { 2610 verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3", 2611 getLLVMStyleWithColumns(40)); 2612 verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2613 getLLVMStyleWithColumns(40)); 2614 EXPECT_EQ("#define Q \\\n" 2615 " \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\" \\\n" 2616 " \"aaaaaaaa.cpp\"", 2617 format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2618 getLLVMStyleWithColumns(40))); 2619 } 2620 2621 TEST_F(FormatTest, UnderstandsLinePPDirective) { 2622 EXPECT_EQ("# 123 \"A string literal\"", 2623 format(" # 123 \"A string literal\"")); 2624 } 2625 2626 TEST_F(FormatTest, LayoutUnknownPPDirective) { 2627 EXPECT_EQ("#;", format("#;")); 2628 verifyFormat("#\n;\n;\n;"); 2629 } 2630 2631 TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) { 2632 EXPECT_EQ("#line 42 \"test\"\n", 2633 format("# \\\n line \\\n 42 \\\n \"test\"\n")); 2634 EXPECT_EQ("#define A B\n", format("# \\\n define \\\n A \\\n B\n", 2635 getLLVMStyleWithColumns(12))); 2636 } 2637 2638 TEST_F(FormatTest, EndOfFileEndsPPDirective) { 2639 EXPECT_EQ("#line 42 \"test\"", 2640 format("# \\\n line \\\n 42 \\\n \"test\"")); 2641 EXPECT_EQ("#define A B", format("# \\\n define \\\n A \\\n B")); 2642 } 2643 2644 TEST_F(FormatTest, DoesntRemoveUnknownTokens) { 2645 verifyFormat("#define A \\x20"); 2646 verifyFormat("#define A \\ x20"); 2647 EXPECT_EQ("#define A \\ x20", format("#define A \\ x20")); 2648 verifyFormat("#define A ''"); 2649 verifyFormat("#define A ''qqq"); 2650 verifyFormat("#define A `qqq"); 2651 verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");"); 2652 EXPECT_EQ("const char *c = STRINGIFY(\n" 2653 "\\na : b);", 2654 format("const char * c = STRINGIFY(\n" 2655 "\\na : b);")); 2656 2657 verifyFormat("a\r\\"); 2658 verifyFormat("a\v\\"); 2659 verifyFormat("a\f\\"); 2660 } 2661 2662 TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) { 2663 verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13)); 2664 verifyFormat("#define A( \\\n BB)", getLLVMStyleWithColumns(12)); 2665 verifyFormat("#define A( \\\n A, B)", getLLVMStyleWithColumns(12)); 2666 // FIXME: We never break before the macro name. 2667 verifyFormat("#define AA( \\\n B)", getLLVMStyleWithColumns(12)); 2668 2669 verifyFormat("#define A A\n#define A A"); 2670 verifyFormat("#define A(X) A\n#define A A"); 2671 2672 verifyFormat("#define Something Other", getLLVMStyleWithColumns(23)); 2673 verifyFormat("#define Something \\\n Other", getLLVMStyleWithColumns(22)); 2674 } 2675 2676 TEST_F(FormatTest, HandlePreprocessorDirectiveContext) { 2677 EXPECT_EQ("// somecomment\n" 2678 "#include \"a.h\"\n" 2679 "#define A( \\\n" 2680 " A, B)\n" 2681 "#include \"b.h\"\n" 2682 "// somecomment\n", 2683 format(" // somecomment\n" 2684 " #include \"a.h\"\n" 2685 "#define A(A,\\\n" 2686 " B)\n" 2687 " #include \"b.h\"\n" 2688 " // somecomment\n", 2689 getLLVMStyleWithColumns(13))); 2690 } 2691 2692 TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); } 2693 2694 TEST_F(FormatTest, LayoutCodeInMacroDefinitions) { 2695 EXPECT_EQ("#define A \\\n" 2696 " c; \\\n" 2697 " e;\n" 2698 "f;", 2699 format("#define A c; e;\n" 2700 "f;", 2701 getLLVMStyleWithColumns(14))); 2702 } 2703 2704 TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); } 2705 2706 TEST_F(FormatTest, MacroDefinitionInsideStatement) { 2707 EXPECT_EQ("int x,\n" 2708 "#define A\n" 2709 " y;", 2710 format("int x,\n#define A\ny;")); 2711 } 2712 2713 TEST_F(FormatTest, HashInMacroDefinition) { 2714 EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle())); 2715 verifyFormat("#define A \\\n b #c;", getLLVMStyleWithColumns(11)); 2716 verifyFormat("#define A \\\n" 2717 " { \\\n" 2718 " f(#c); \\\n" 2719 " }", 2720 getLLVMStyleWithColumns(11)); 2721 2722 verifyFormat("#define A(X) \\\n" 2723 " void function##X()", 2724 getLLVMStyleWithColumns(22)); 2725 2726 verifyFormat("#define A(a, b, c) \\\n" 2727 " void a##b##c()", 2728 getLLVMStyleWithColumns(22)); 2729 2730 verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22)); 2731 } 2732 2733 TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) { 2734 EXPECT_EQ("#define A (x)", format("#define A (x)")); 2735 EXPECT_EQ("#define A(x)", format("#define A(x)")); 2736 } 2737 2738 TEST_F(FormatTest, EmptyLinesInMacroDefinitions) { 2739 EXPECT_EQ("#define A b;", format("#define A \\\n" 2740 " \\\n" 2741 " b;", 2742 getLLVMStyleWithColumns(25))); 2743 EXPECT_EQ("#define A \\\n" 2744 " \\\n" 2745 " a; \\\n" 2746 " b;", 2747 format("#define A \\\n" 2748 " \\\n" 2749 " a; \\\n" 2750 " b;", 2751 getLLVMStyleWithColumns(11))); 2752 EXPECT_EQ("#define A \\\n" 2753 " a; \\\n" 2754 " \\\n" 2755 " b;", 2756 format("#define A \\\n" 2757 " a; \\\n" 2758 " \\\n" 2759 " b;", 2760 getLLVMStyleWithColumns(11))); 2761 } 2762 2763 TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) { 2764 verifyIncompleteFormat("#define A :"); 2765 verifyFormat("#define SOMECASES \\\n" 2766 " case 1: \\\n" 2767 " case 2\n", 2768 getLLVMStyleWithColumns(20)); 2769 verifyFormat("#define A template <typename T>"); 2770 verifyIncompleteFormat("#define STR(x) #x\n" 2771 "f(STR(this_is_a_string_literal{));"); 2772 verifyFormat("#pragma omp threadprivate( \\\n" 2773 " y)), // expected-warning", 2774 getLLVMStyleWithColumns(28)); 2775 verifyFormat("#d, = };"); 2776 verifyFormat("#if \"a"); 2777 verifyIncompleteFormat("({\n" 2778 "#define b \\\n" 2779 " } \\\n" 2780 " a\n" 2781 "a", 2782 getLLVMStyleWithColumns(15)); 2783 verifyFormat("#define A \\\n" 2784 " { \\\n" 2785 " {\n" 2786 "#define B \\\n" 2787 " } \\\n" 2788 " }", 2789 getLLVMStyleWithColumns(15)); 2790 verifyNoCrash("#if a\na(\n#else\n#endif\n{a"); 2791 verifyNoCrash("a={0,1\n#if a\n#else\n;\n#endif\n}"); 2792 verifyNoCrash("#if a\na(\n#else\n#endif\n) a {a,b,c,d,f,g};"); 2793 verifyNoCrash("#ifdef A\n a(\n #else\n #endif\n) = []() { \n)}"); 2794 } 2795 2796 TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) { 2797 verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline. 2798 EXPECT_EQ("class A : public QObject {\n" 2799 " Q_OBJECT\n" 2800 "\n" 2801 " A() {}\n" 2802 "};", 2803 format("class A : public QObject {\n" 2804 " Q_OBJECT\n" 2805 "\n" 2806 " A() {\n}\n" 2807 "} ;")); 2808 EXPECT_EQ("MACRO\n" 2809 "/*static*/ int i;", 2810 format("MACRO\n" 2811 " /*static*/ int i;")); 2812 EXPECT_EQ("SOME_MACRO\n" 2813 "namespace {\n" 2814 "void f();\n" 2815 "}", 2816 format("SOME_MACRO\n" 2817 " namespace {\n" 2818 "void f( );\n" 2819 "}")); 2820 // Only if the identifier contains at least 5 characters. 2821 EXPECT_EQ("HTTP f();", format("HTTP\nf();")); 2822 EXPECT_EQ("MACRO\nf();", format("MACRO\nf();")); 2823 // Only if everything is upper case. 2824 EXPECT_EQ("class A : public QObject {\n" 2825 " Q_Object A() {}\n" 2826 "};", 2827 format("class A : public QObject {\n" 2828 " Q_Object\n" 2829 " A() {\n}\n" 2830 "} ;")); 2831 2832 // Only if the next line can actually start an unwrapped line. 2833 EXPECT_EQ("SOME_WEIRD_LOG_MACRO << SomeThing;", 2834 format("SOME_WEIRD_LOG_MACRO\n" 2835 "<< SomeThing;")); 2836 2837 verifyFormat("VISIT_GL_CALL(GenBuffers, void, (GLsizei n, GLuint* buffers), " 2838 "(n, buffers))\n", 2839 getChromiumStyle(FormatStyle::LK_Cpp)); 2840 } 2841 2842 TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) { 2843 EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2844 "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2845 "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2846 "class X {};\n" 2847 "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2848 "int *createScopDetectionPass() { return 0; }", 2849 format(" INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2850 " INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2851 " INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2852 " class X {};\n" 2853 " INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2854 " int *createScopDetectionPass() { return 0; }")); 2855 // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as 2856 // braces, so that inner block is indented one level more. 2857 EXPECT_EQ("int q() {\n" 2858 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2859 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2860 " IPC_END_MESSAGE_MAP()\n" 2861 "}", 2862 format("int q() {\n" 2863 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2864 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2865 " IPC_END_MESSAGE_MAP()\n" 2866 "}")); 2867 2868 // Same inside macros. 2869 EXPECT_EQ("#define LIST(L) \\\n" 2870 " L(A) \\\n" 2871 " L(B) \\\n" 2872 " L(C)", 2873 format("#define LIST(L) \\\n" 2874 " L(A) \\\n" 2875 " L(B) \\\n" 2876 " L(C)", 2877 getGoogleStyle())); 2878 2879 // These must not be recognized as macros. 2880 EXPECT_EQ("int q() {\n" 2881 " f(x);\n" 2882 " f(x) {}\n" 2883 " f(x)->g();\n" 2884 " f(x)->*g();\n" 2885 " f(x).g();\n" 2886 " f(x) = x;\n" 2887 " f(x) += x;\n" 2888 " f(x) -= x;\n" 2889 " f(x) *= x;\n" 2890 " f(x) /= x;\n" 2891 " f(x) %= x;\n" 2892 " f(x) &= x;\n" 2893 " f(x) |= x;\n" 2894 " f(x) ^= x;\n" 2895 " f(x) >>= x;\n" 2896 " f(x) <<= x;\n" 2897 " f(x)[y].z();\n" 2898 " LOG(INFO) << x;\n" 2899 " ifstream(x) >> x;\n" 2900 "}\n", 2901 format("int q() {\n" 2902 " f(x)\n;\n" 2903 " f(x)\n {}\n" 2904 " f(x)\n->g();\n" 2905 " f(x)\n->*g();\n" 2906 " f(x)\n.g();\n" 2907 " f(x)\n = x;\n" 2908 " f(x)\n += x;\n" 2909 " f(x)\n -= x;\n" 2910 " f(x)\n *= x;\n" 2911 " f(x)\n /= x;\n" 2912 " f(x)\n %= x;\n" 2913 " f(x)\n &= x;\n" 2914 " f(x)\n |= x;\n" 2915 " f(x)\n ^= x;\n" 2916 " f(x)\n >>= x;\n" 2917 " f(x)\n <<= x;\n" 2918 " f(x)\n[y].z();\n" 2919 " LOG(INFO)\n << x;\n" 2920 " ifstream(x)\n >> x;\n" 2921 "}\n")); 2922 EXPECT_EQ("int q() {\n" 2923 " F(x)\n" 2924 " if (1) {\n" 2925 " }\n" 2926 " F(x)\n" 2927 " while (1) {\n" 2928 " }\n" 2929 " F(x)\n" 2930 " G(x);\n" 2931 " F(x)\n" 2932 " try {\n" 2933 " Q();\n" 2934 " } catch (...) {\n" 2935 " }\n" 2936 "}\n", 2937 format("int q() {\n" 2938 "F(x)\n" 2939 "if (1) {}\n" 2940 "F(x)\n" 2941 "while (1) {}\n" 2942 "F(x)\n" 2943 "G(x);\n" 2944 "F(x)\n" 2945 "try { Q(); } catch (...) {}\n" 2946 "}\n")); 2947 EXPECT_EQ("class A {\n" 2948 " A() : t(0) {}\n" 2949 " A(int i) noexcept() : {}\n" 2950 " A(X x)\n" // FIXME: function-level try blocks are broken. 2951 " try : t(0) {\n" 2952 " } catch (...) {\n" 2953 " }\n" 2954 "};", 2955 format("class A {\n" 2956 " A()\n : t(0) {}\n" 2957 " A(int i)\n noexcept() : {}\n" 2958 " A(X x)\n" 2959 " try : t(0) {} catch (...) {}\n" 2960 "};")); 2961 EXPECT_EQ("class SomeClass {\n" 2962 "public:\n" 2963 " SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2964 "};", 2965 format("class SomeClass {\n" 2966 "public:\n" 2967 " SomeClass()\n" 2968 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2969 "};")); 2970 EXPECT_EQ("class SomeClass {\n" 2971 "public:\n" 2972 " SomeClass()\n" 2973 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2974 "};", 2975 format("class SomeClass {\n" 2976 "public:\n" 2977 " SomeClass()\n" 2978 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2979 "};", 2980 getLLVMStyleWithColumns(40))); 2981 2982 verifyFormat("MACRO(>)"); 2983 } 2984 2985 TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) { 2986 verifyFormat("#define A \\\n" 2987 " f({ \\\n" 2988 " g(); \\\n" 2989 " });", 2990 getLLVMStyleWithColumns(11)); 2991 } 2992 2993 TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) { 2994 EXPECT_EQ("{\n {\n#define A\n }\n}", format("{{\n#define A\n}}")); 2995 } 2996 2997 TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) { 2998 verifyFormat("{\n { a #c; }\n}"); 2999 } 3000 3001 TEST_F(FormatTest, FormatUnbalancedStructuralElements) { 3002 EXPECT_EQ("#define A \\\n { \\\n {\nint i;", 3003 format("#define A { {\nint i;", getLLVMStyleWithColumns(11))); 3004 EXPECT_EQ("#define A \\\n } \\\n }\nint i;", 3005 format("#define A } }\nint i;", getLLVMStyleWithColumns(11))); 3006 } 3007 3008 TEST_F(FormatTest, EscapedNewlines) { 3009 EXPECT_EQ( 3010 "#define A \\\n int i; \\\n int j;", 3011 format("#define A \\\nint i;\\\n int j;", getLLVMStyleWithColumns(11))); 3012 EXPECT_EQ("#define A\n\nint i;", format("#define A \\\n\n int i;")); 3013 EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();")); 3014 EXPECT_EQ("/* \\ \\ \\\n*/", format("\\\n/* \\ \\ \\\n*/")); 3015 EXPECT_EQ("<a\n\\\\\n>", format("<a\n\\\\\n>")); 3016 } 3017 3018 TEST_F(FormatTest, DontCrashOnBlockComments) { 3019 EXPECT_EQ( 3020 "int xxxxxxxxx; /* " 3021 "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\n" 3022 "zzzzzz\n" 3023 "0*/", 3024 format("int xxxxxxxxx; /* " 3025 "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy zzzzzz\n" 3026 "0*/")); 3027 } 3028 3029 TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) { 3030 verifyFormat("#define A \\\n" 3031 " int v( \\\n" 3032 " a); \\\n" 3033 " int i;", 3034 getLLVMStyleWithColumns(11)); 3035 } 3036 3037 TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) { 3038 EXPECT_EQ( 3039 "#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 3040 " \\\n" 3041 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 3042 "\n" 3043 "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 3044 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n", 3045 format(" #define ALooooooooooooooooooooooooooooooooooooooongMacro(" 3046 "\\\n" 3047 "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 3048 " \n" 3049 " AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 3050 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n")); 3051 } 3052 3053 TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) { 3054 EXPECT_EQ("int\n" 3055 "#define A\n" 3056 " a;", 3057 format("int\n#define A\na;")); 3058 verifyFormat("functionCallTo(\n" 3059 " someOtherFunction(\n" 3060 " withSomeParameters, whichInSequence,\n" 3061 " areLongerThanALine(andAnotherCall,\n" 3062 "#define A B\n" 3063 " withMoreParamters,\n" 3064 " whichStronglyInfluenceTheLayout),\n" 3065 " andMoreParameters),\n" 3066 " trailing);", 3067 getLLVMStyleWithColumns(69)); 3068 verifyFormat("Foo::Foo()\n" 3069 "#ifdef BAR\n" 3070 " : baz(0)\n" 3071 "#endif\n" 3072 "{\n" 3073 "}"); 3074 verifyFormat("void f() {\n" 3075 " if (true)\n" 3076 "#ifdef A\n" 3077 " f(42);\n" 3078 " x();\n" 3079 "#else\n" 3080 " g();\n" 3081 " x();\n" 3082 "#endif\n" 3083 "}"); 3084 verifyFormat("void f(param1, param2,\n" 3085 " param3,\n" 3086 "#ifdef A\n" 3087 " param4(param5,\n" 3088 "#ifdef A1\n" 3089 " param6,\n" 3090 "#ifdef A2\n" 3091 " param7),\n" 3092 "#else\n" 3093 " param8),\n" 3094 " param9,\n" 3095 "#endif\n" 3096 " param10,\n" 3097 "#endif\n" 3098 " param11)\n" 3099 "#else\n" 3100 " param12)\n" 3101 "#endif\n" 3102 "{\n" 3103 " x();\n" 3104 "}", 3105 getLLVMStyleWithColumns(28)); 3106 verifyFormat("#if 1\n" 3107 "int i;"); 3108 verifyFormat("#if 1\n" 3109 "#endif\n" 3110 "#if 1\n" 3111 "#else\n" 3112 "#endif\n"); 3113 verifyFormat("DEBUG({\n" 3114 " return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3115 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" 3116 "});\n" 3117 "#if a\n" 3118 "#else\n" 3119 "#endif"); 3120 3121 verifyIncompleteFormat("void f(\n" 3122 "#if A\n" 3123 " );\n" 3124 "#else\n" 3125 "#endif"); 3126 } 3127 3128 TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) { 3129 verifyFormat("#endif\n" 3130 "#if B"); 3131 } 3132 3133 TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) { 3134 FormatStyle SingleLine = getLLVMStyle(); 3135 SingleLine.AllowShortIfStatementsOnASingleLine = true; 3136 verifyFormat("#if 0\n" 3137 "#elif 1\n" 3138 "#endif\n" 3139 "void foo() {\n" 3140 " if (test) foo2();\n" 3141 "}", 3142 SingleLine); 3143 } 3144 3145 TEST_F(FormatTest, LayoutBlockInsideParens) { 3146 verifyFormat("functionCall({ int i; });"); 3147 verifyFormat("functionCall({\n" 3148 " int i;\n" 3149 " int j;\n" 3150 "});"); 3151 verifyFormat("functionCall(\n" 3152 " {\n" 3153 " int i;\n" 3154 " int j;\n" 3155 " },\n" 3156 " aaaa, bbbb, cccc);"); 3157 verifyFormat("functionA(functionB({\n" 3158 " int i;\n" 3159 " int j;\n" 3160 " }),\n" 3161 " aaaa, bbbb, cccc);"); 3162 verifyFormat("functionCall(\n" 3163 " {\n" 3164 " int i;\n" 3165 " int j;\n" 3166 " },\n" 3167 " aaaa, bbbb, // comment\n" 3168 " cccc);"); 3169 verifyFormat("functionA(functionB({\n" 3170 " int i;\n" 3171 " int j;\n" 3172 " }),\n" 3173 " aaaa, bbbb, // comment\n" 3174 " cccc);"); 3175 verifyFormat("functionCall(aaaa, bbbb, { int i; });"); 3176 verifyFormat("functionCall(aaaa, bbbb, {\n" 3177 " int i;\n" 3178 " int j;\n" 3179 "});"); 3180 verifyFormat( 3181 "Aaa(\n" // FIXME: There shouldn't be a linebreak here. 3182 " {\n" 3183 " int i; // break\n" 3184 " },\n" 3185 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 3186 " ccccccccccccccccc));"); 3187 verifyFormat("DEBUG({\n" 3188 " if (a)\n" 3189 " f();\n" 3190 "});"); 3191 } 3192 3193 TEST_F(FormatTest, LayoutBlockInsideStatement) { 3194 EXPECT_EQ("SOME_MACRO { int i; }\n" 3195 "int i;", 3196 format(" SOME_MACRO {int i;} int i;")); 3197 } 3198 3199 TEST_F(FormatTest, LayoutNestedBlocks) { 3200 verifyFormat("void AddOsStrings(unsigned bitmask) {\n" 3201 " struct s {\n" 3202 " int i;\n" 3203 " };\n" 3204 " s kBitsToOs[] = {{10}};\n" 3205 " for (int i = 0; i < 10; ++i)\n" 3206 " return;\n" 3207 "}"); 3208 verifyFormat("call(parameter, {\n" 3209 " something();\n" 3210 " // Comment using all columns.\n" 3211 " somethingelse();\n" 3212 "});", 3213 getLLVMStyleWithColumns(40)); 3214 verifyFormat("DEBUG( //\n" 3215 " { f(); }, a);"); 3216 verifyFormat("DEBUG( //\n" 3217 " {\n" 3218 " f(); //\n" 3219 " },\n" 3220 " a);"); 3221 3222 EXPECT_EQ("call(parameter, {\n" 3223 " something();\n" 3224 " // Comment too\n" 3225 " // looooooooooong.\n" 3226 " somethingElse();\n" 3227 "});", 3228 format("call(parameter, {\n" 3229 " something();\n" 3230 " // Comment too looooooooooong.\n" 3231 " somethingElse();\n" 3232 "});", 3233 getLLVMStyleWithColumns(29))); 3234 EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int i; });")); 3235 EXPECT_EQ("DEBUG({ // comment\n" 3236 " int i;\n" 3237 "});", 3238 format("DEBUG({ // comment\n" 3239 "int i;\n" 3240 "});")); 3241 EXPECT_EQ("DEBUG({\n" 3242 " int i;\n" 3243 "\n" 3244 " // comment\n" 3245 " int j;\n" 3246 "});", 3247 format("DEBUG({\n" 3248 " int i;\n" 3249 "\n" 3250 " // comment\n" 3251 " int j;\n" 3252 "});")); 3253 3254 verifyFormat("DEBUG({\n" 3255 " if (a)\n" 3256 " return;\n" 3257 "});"); 3258 verifyGoogleFormat("DEBUG({\n" 3259 " if (a) return;\n" 3260 "});"); 3261 FormatStyle Style = getGoogleStyle(); 3262 Style.ColumnLimit = 45; 3263 verifyFormat("Debug(aaaaa,\n" 3264 " {\n" 3265 " if (aaaaaaaaaaaaaaaaaaaaaaaa) return;\n" 3266 " },\n" 3267 " a);", 3268 Style); 3269 3270 verifyFormat("SomeFunction({MACRO({ return output; }), b});"); 3271 3272 verifyNoCrash("^{v^{a}}"); 3273 } 3274 3275 TEST_F(FormatTest, FormatNestedBlocksInMacros) { 3276 EXPECT_EQ("#define MACRO() \\\n" 3277 " Debug(aaa, /* force line break */ \\\n" 3278 " { \\\n" 3279 " int i; \\\n" 3280 " int j; \\\n" 3281 " })", 3282 format("#define MACRO() Debug(aaa, /* force line break */ \\\n" 3283 " { int i; int j; })", 3284 getGoogleStyle())); 3285 3286 EXPECT_EQ("#define A \\\n" 3287 " [] { \\\n" 3288 " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx( \\\n" 3289 " xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); \\\n" 3290 " }", 3291 format("#define A [] { xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx( \\\n" 3292 "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); }", 3293 getGoogleStyle())); 3294 } 3295 3296 TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) { 3297 EXPECT_EQ("{}", format("{}")); 3298 verifyFormat("enum E {};"); 3299 verifyFormat("enum E {}"); 3300 } 3301 3302 TEST_F(FormatTest, FormatBeginBlockEndMacros) { 3303 FormatStyle Style = getLLVMStyle(); 3304 Style.MacroBlockBegin = "^[A-Z_]+_BEGIN$"; 3305 Style.MacroBlockEnd = "^[A-Z_]+_END$"; 3306 verifyFormat("FOO_BEGIN\n" 3307 " FOO_ENTRY\n" 3308 "FOO_END", Style); 3309 verifyFormat("FOO_BEGIN\n" 3310 " NESTED_FOO_BEGIN\n" 3311 " NESTED_FOO_ENTRY\n" 3312 " NESTED_FOO_END\n" 3313 "FOO_END", Style); 3314 verifyFormat("FOO_BEGIN(Foo, Bar)\n" 3315 " int x;\n" 3316 " x = 1;\n" 3317 "FOO_END(Baz)", Style); 3318 } 3319 3320 //===----------------------------------------------------------------------===// 3321 // Line break tests. 3322 //===----------------------------------------------------------------------===// 3323 3324 TEST_F(FormatTest, PreventConfusingIndents) { 3325 verifyFormat( 3326 "void f() {\n" 3327 " SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n" 3328 " parameter, parameter, parameter)),\n" 3329 " SecondLongCall(parameter));\n" 3330 "}"); 3331 verifyFormat( 3332 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3333 " aaaaaaaaaaaaaaaaaaaaaaaa(\n" 3334 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3335 " aaaaaaaaaaaaaaaaaaaaaaaa);"); 3336 verifyFormat( 3337 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3338 " [aaaaaaaaaaaaaaaaaaaaaaaa\n" 3339 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 3340 " [aaaaaaaaaaaaaaaaaaaaaaaa]];"); 3341 verifyFormat( 3342 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 3343 " aaaaaaaaaaaaaaaaaaaaaaaa<\n" 3344 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n" 3345 " aaaaaaaaaaaaaaaaaaaaaaaa>;"); 3346 verifyFormat("int a = bbbb && ccc && fffff(\n" 3347 "#define A Just forcing a new line\n" 3348 " ddd);"); 3349 } 3350 3351 TEST_F(FormatTest, LineBreakingInBinaryExpressions) { 3352 verifyFormat( 3353 "bool aaaaaaa =\n" 3354 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n" 3355 " bbbbbbbb();"); 3356 verifyFormat( 3357 "bool aaaaaaa =\n" 3358 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n" 3359 " bbbbbbbb();"); 3360 3361 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3362 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n" 3363 " ccccccccc == ddddddddddd;"); 3364 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3365 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n" 3366 " ccccccccc == ddddddddddd;"); 3367 verifyFormat( 3368 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 3369 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n" 3370 " ccccccccc == ddddddddddd;"); 3371 3372 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3373 " aaaaaa) &&\n" 3374 " bbbbbb && cccccc;"); 3375 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3376 " aaaaaa) >>\n" 3377 " bbbbbb;"); 3378 verifyFormat("aa = Whitespaces.addUntouchableComment(\n" 3379 " SourceMgr.getSpellingColumnNumber(\n" 3380 " TheLine.Last->FormatTok.Tok.getLocation()) -\n" 3381 " 1);"); 3382 3383 verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3384 " bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n" 3385 " cccccc) {\n}"); 3386 verifyFormat("b = a &&\n" 3387 " // Comment\n" 3388 " b.c && d;"); 3389 3390 // If the LHS of a comparison is not a binary expression itself, the 3391 // additional linebreak confuses many people. 3392 verifyFormat( 3393 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3394 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n" 3395 "}"); 3396 verifyFormat( 3397 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3398 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3399 "}"); 3400 verifyFormat( 3401 "if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n" 3402 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3403 "}"); 3404 // Even explicit parentheses stress the precedence enough to make the 3405 // additional break unnecessary. 3406 verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3407 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3408 "}"); 3409 // This cases is borderline, but with the indentation it is still readable. 3410 verifyFormat( 3411 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3412 " aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3413 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 3414 "}", 3415 getLLVMStyleWithColumns(75)); 3416 3417 // If the LHS is a binary expression, we should still use the additional break 3418 // as otherwise the formatting hides the operator precedence. 3419 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3420 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3421 " 5) {\n" 3422 "}"); 3423 3424 FormatStyle OnePerLine = getLLVMStyle(); 3425 OnePerLine.BinPackParameters = false; 3426 verifyFormat( 3427 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3428 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3429 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}", 3430 OnePerLine); 3431 } 3432 3433 TEST_F(FormatTest, ExpressionIndentation) { 3434 verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3435 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3436 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3437 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3438 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n" 3439 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n" 3440 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3441 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n" 3442 " ccccccccccccccccccccccccccccccccccccccccc;"); 3443 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3444 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3445 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3446 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3447 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3448 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3449 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3450 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3451 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3452 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3453 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3454 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3455 verifyFormat("if () {\n" 3456 "} else if (aaaaa &&\n" 3457 " bbbbb > // break\n" 3458 " ccccc) {\n" 3459 "}"); 3460 3461 // Presence of a trailing comment used to change indentation of b. 3462 verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n" 3463 " b;\n" 3464 "return aaaaaaaaaaaaaaaaaaa +\n" 3465 " b; //", 3466 getLLVMStyleWithColumns(30)); 3467 } 3468 3469 TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) { 3470 // Not sure what the best system is here. Like this, the LHS can be found 3471 // immediately above an operator (everything with the same or a higher 3472 // indent). The RHS is aligned right of the operator and so compasses 3473 // everything until something with the same indent as the operator is found. 3474 // FIXME: Is this a good system? 3475 FormatStyle Style = getLLVMStyle(); 3476 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 3477 verifyFormat( 3478 "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3479 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3480 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3481 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3482 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3483 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3484 " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3485 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3486 " > ccccccccccccccccccccccccccccccccccccccccc;", 3487 Style); 3488 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3489 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3490 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3491 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3492 Style); 3493 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3494 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3495 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3496 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3497 Style); 3498 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3499 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3500 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3501 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3502 Style); 3503 verifyFormat("if () {\n" 3504 "} else if (aaaaa\n" 3505 " && bbbbb // break\n" 3506 " > ccccc) {\n" 3507 "}", 3508 Style); 3509 verifyFormat("return (a)\n" 3510 " // comment\n" 3511 " + b;", 3512 Style); 3513 verifyFormat( 3514 "int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3515 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3516 " + cc;", 3517 Style); 3518 3519 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3520 " = aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 3521 Style); 3522 3523 // Forced by comments. 3524 verifyFormat( 3525 "unsigned ContentSize =\n" 3526 " sizeof(int16_t) // DWARF ARange version number\n" 3527 " + sizeof(int32_t) // Offset of CU in the .debug_info section\n" 3528 " + sizeof(int8_t) // Pointer Size (in bytes)\n" 3529 " + sizeof(int8_t); // Segment Size (in bytes)"); 3530 3531 verifyFormat("return boost::fusion::at_c<0>(iiii).second\n" 3532 " == boost::fusion::at_c<1>(iiii).second;", 3533 Style); 3534 3535 Style.ColumnLimit = 60; 3536 verifyFormat("zzzzzzzzzz\n" 3537 " = bbbbbbbbbbbbbbbbb\n" 3538 " >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);", 3539 Style); 3540 } 3541 3542 TEST_F(FormatTest, NoOperandAlignment) { 3543 FormatStyle Style = getLLVMStyle(); 3544 Style.AlignOperands = false; 3545 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; 3546 verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3547 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3548 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3549 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3550 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3551 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3552 " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3553 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3554 " > ccccccccccccccccccccccccccccccccccccccccc;", 3555 Style); 3556 3557 verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3558 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3559 " + cc;", 3560 Style); 3561 verifyFormat("int a = aa\n" 3562 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3563 " * cccccccccccccccccccccccccccccccccccc;", 3564 Style); 3565 3566 Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; 3567 verifyFormat("return (a > b\n" 3568 " // comment1\n" 3569 " // comment2\n" 3570 " || c);", 3571 Style); 3572 } 3573 3574 TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) { 3575 FormatStyle Style = getLLVMStyle(); 3576 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; 3577 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 3578 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3579 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;", 3580 Style); 3581 } 3582 3583 TEST_F(FormatTest, ConstructorInitializers) { 3584 verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}"); 3585 verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}", 3586 getLLVMStyleWithColumns(45)); 3587 verifyFormat("Constructor()\n" 3588 " : Inttializer(FitsOnTheLine) {}", 3589 getLLVMStyleWithColumns(44)); 3590 verifyFormat("Constructor()\n" 3591 " : Inttializer(FitsOnTheLine) {}", 3592 getLLVMStyleWithColumns(43)); 3593 3594 verifyFormat("template <typename T>\n" 3595 "Constructor() : Initializer(FitsOnTheLine) {}", 3596 getLLVMStyleWithColumns(45)); 3597 3598 verifyFormat( 3599 "SomeClass::Constructor()\n" 3600 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3601 3602 verifyFormat( 3603 "SomeClass::Constructor()\n" 3604 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3605 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}"); 3606 verifyFormat( 3607 "SomeClass::Constructor()\n" 3608 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3609 " aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3610 verifyFormat("Constructor(aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3611 " aaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3612 " : aaaaaaaaaa(aaaaaa) {}"); 3613 3614 verifyFormat("Constructor()\n" 3615 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3616 " aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3617 " aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3618 " aaaaaaaaaaaaaaaaaaaaaaa() {}"); 3619 3620 verifyFormat("Constructor()\n" 3621 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3622 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3623 3624 verifyFormat("Constructor(int Parameter = 0)\n" 3625 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n" 3626 " aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}"); 3627 verifyFormat("Constructor()\n" 3628 " : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n" 3629 "}", 3630 getLLVMStyleWithColumns(60)); 3631 verifyFormat("Constructor()\n" 3632 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3633 " aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}"); 3634 3635 // Here a line could be saved by splitting the second initializer onto two 3636 // lines, but that is not desirable. 3637 verifyFormat("Constructor()\n" 3638 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n" 3639 " aaaaaaaaaaa(aaaaaaaaaaa),\n" 3640 " aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3641 3642 FormatStyle OnePerLine = getLLVMStyle(); 3643 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3644 OnePerLine.AllowAllParametersOfDeclarationOnNextLine = false; 3645 verifyFormat("SomeClass::Constructor()\n" 3646 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3647 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3648 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3649 OnePerLine); 3650 verifyFormat("SomeClass::Constructor()\n" 3651 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n" 3652 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3653 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3654 OnePerLine); 3655 verifyFormat("MyClass::MyClass(int var)\n" 3656 " : some_var_(var), // 4 space indent\n" 3657 " some_other_var_(var + 1) { // lined up\n" 3658 "}", 3659 OnePerLine); 3660 verifyFormat("Constructor()\n" 3661 " : aaaaa(aaaaaa),\n" 3662 " aaaaa(aaaaaa),\n" 3663 " aaaaa(aaaaaa),\n" 3664 " aaaaa(aaaaaa),\n" 3665 " aaaaa(aaaaaa) {}", 3666 OnePerLine); 3667 verifyFormat("Constructor()\n" 3668 " : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n" 3669 " aaaaaaaaaaaaaaaaaaaaaa) {}", 3670 OnePerLine); 3671 OnePerLine.BinPackParameters = false; 3672 verifyFormat( 3673 "Constructor()\n" 3674 " : aaaaaaaaaaaaaaaaaaaaaaaa(\n" 3675 " aaaaaaaaaaa().aaa(),\n" 3676 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 3677 OnePerLine); 3678 OnePerLine.ColumnLimit = 60; 3679 verifyFormat("Constructor()\n" 3680 " : aaaaaaaaaaaaaaaaaaaa(a),\n" 3681 " bbbbbbbbbbbbbbbbbbbbbbbb(b) {}", 3682 OnePerLine); 3683 3684 EXPECT_EQ("Constructor()\n" 3685 " : // Comment forcing unwanted break.\n" 3686 " aaaa(aaaa) {}", 3687 format("Constructor() :\n" 3688 " // Comment forcing unwanted break.\n" 3689 " aaaa(aaaa) {}")); 3690 } 3691 3692 TEST_F(FormatTest, MemoizationTests) { 3693 // This breaks if the memoization lookup does not take \c Indent and 3694 // \c LastSpace into account. 3695 verifyFormat( 3696 "extern CFRunLoopTimerRef\n" 3697 "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n" 3698 " CFTimeInterval interval, CFOptionFlags flags,\n" 3699 " CFIndex order, CFRunLoopTimerCallBack callout,\n" 3700 " CFRunLoopTimerContext *context) {}"); 3701 3702 // Deep nesting somewhat works around our memoization. 3703 verifyFormat( 3704 "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3705 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3706 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3707 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3708 " aaaaa())))))))))))))))))))))))))))))))))))))));", 3709 getLLVMStyleWithColumns(65)); 3710 verifyFormat( 3711 "aaaaa(\n" 3712 " aaaaa,\n" 3713 " aaaaa(\n" 3714 " aaaaa,\n" 3715 " aaaaa(\n" 3716 " aaaaa,\n" 3717 " aaaaa(\n" 3718 " aaaaa,\n" 3719 " aaaaa(\n" 3720 " aaaaa,\n" 3721 " aaaaa(\n" 3722 " aaaaa,\n" 3723 " aaaaa(\n" 3724 " aaaaa,\n" 3725 " aaaaa(\n" 3726 " aaaaa,\n" 3727 " aaaaa(\n" 3728 " aaaaa,\n" 3729 " aaaaa(\n" 3730 " aaaaa,\n" 3731 " aaaaa(\n" 3732 " aaaaa,\n" 3733 " aaaaa(\n" 3734 " aaaaa,\n" 3735 " aaaaa))))))))))));", 3736 getLLVMStyleWithColumns(65)); 3737 verifyFormat( 3738 "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" 3739 " a),\n" 3740 " a),\n" 3741 " a),\n" 3742 " a),\n" 3743 " a),\n" 3744 " a),\n" 3745 " a),\n" 3746 " a),\n" 3747 " a),\n" 3748 " a),\n" 3749 " a),\n" 3750 " a),\n" 3751 " a),\n" 3752 " a),\n" 3753 " a),\n" 3754 " a),\n" 3755 " a)", 3756 getLLVMStyleWithColumns(65)); 3757 3758 // This test takes VERY long when memoization is broken. 3759 FormatStyle OnePerLine = getLLVMStyle(); 3760 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3761 OnePerLine.BinPackParameters = false; 3762 std::string input = "Constructor()\n" 3763 " : aaaa(a,\n"; 3764 for (unsigned i = 0, e = 80; i != e; ++i) { 3765 input += " a,\n"; 3766 } 3767 input += " a) {}"; 3768 verifyFormat(input, OnePerLine); 3769 } 3770 3771 TEST_F(FormatTest, BreaksAsHighAsPossible) { 3772 verifyFormat( 3773 "void f() {\n" 3774 " if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n" 3775 " (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n" 3776 " f();\n" 3777 "}"); 3778 verifyFormat("if (Intervals[i].getRange().getFirst() <\n" 3779 " Intervals[i - 1].getRange().getLast()) {\n}"); 3780 } 3781 3782 TEST_F(FormatTest, BreaksFunctionDeclarations) { 3783 // Principially, we break function declarations in a certain order: 3784 // 1) break amongst arguments. 3785 verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n" 3786 " Cccccccccccccc cccccccccccccc);"); 3787 verifyFormat("template <class TemplateIt>\n" 3788 "SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n" 3789 " TemplateIt *stop) {}"); 3790 3791 // 2) break after return type. 3792 verifyFormat( 3793 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3794 "bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);", 3795 getGoogleStyle()); 3796 3797 // 3) break after (. 3798 verifyFormat( 3799 "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n" 3800 " Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);", 3801 getGoogleStyle()); 3802 3803 // 4) break before after nested name specifiers. 3804 verifyFormat( 3805 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3806 "SomeClasssssssssssssssssssssssssssssssssssssss::\n" 3807 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);", 3808 getGoogleStyle()); 3809 3810 // However, there are exceptions, if a sufficient amount of lines can be 3811 // saved. 3812 // FIXME: The precise cut-offs wrt. the number of saved lines might need some 3813 // more adjusting. 3814 verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3815 " Cccccccccccccc cccccccccc,\n" 3816 " Cccccccccccccc cccccccccc,\n" 3817 " Cccccccccccccc cccccccccc,\n" 3818 " Cccccccccccccc cccccccccc);"); 3819 verifyFormat( 3820 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3821 "bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3822 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3823 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);", 3824 getGoogleStyle()); 3825 verifyFormat( 3826 "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3827 " Cccccccccccccc cccccccccc,\n" 3828 " Cccccccccccccc cccccccccc,\n" 3829 " Cccccccccccccc cccccccccc,\n" 3830 " Cccccccccccccc cccccccccc,\n" 3831 " Cccccccccccccc cccccccccc,\n" 3832 " Cccccccccccccc cccccccccc);"); 3833 verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 3834 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3835 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3836 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3837 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);"); 3838 3839 // Break after multi-line parameters. 3840 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3841 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3842 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3843 " bbbb bbbb);"); 3844 verifyFormat("void SomeLoooooooooooongFunction(\n" 3845 " std::unique_ptr<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n" 3846 " aaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3847 " int bbbbbbbbbbbbb);"); 3848 3849 // Treat overloaded operators like other functions. 3850 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3851 "operator>(const SomeLoooooooooooooooooooooooooogType &other);"); 3852 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3853 "operator>>(const SomeLooooooooooooooooooooooooogType &other);"); 3854 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3855 "operator<<(const SomeLooooooooooooooooooooooooogType &other);"); 3856 verifyGoogleFormat( 3857 "SomeLoooooooooooooooooooooooooooooogType operator>>(\n" 3858 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3859 verifyGoogleFormat( 3860 "SomeLoooooooooooooooooooooooooooooogType operator<<(\n" 3861 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3862 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3863 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3864 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n" 3865 "aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3866 verifyGoogleFormat( 3867 "typename aaaaaaaaaa<aaaaaa>::aaaaaaaaaaa\n" 3868 "aaaaaaaaaa<aaaaaa>::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3869 " bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}"); 3870 verifyGoogleFormat( 3871 "template <typename T>\n" 3872 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3873 "aaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaaaaa(\n" 3874 " aaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaa);"); 3875 3876 FormatStyle Style = getLLVMStyle(); 3877 Style.PointerAlignment = FormatStyle::PAS_Left; 3878 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3879 " aaaaaaaaaaaaaaaaaaaaaaaaa* const aaaaaaaaaaaa) {}", 3880 Style); 3881 verifyFormat("void aaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*\n" 3882 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 3883 Style); 3884 } 3885 3886 TEST_F(FormatTest, TrailingReturnType) { 3887 verifyFormat("auto foo() -> int;\n"); 3888 verifyFormat("struct S {\n" 3889 " auto bar() const -> int;\n" 3890 "};"); 3891 verifyFormat("template <size_t Order, typename T>\n" 3892 "auto load_img(const std::string &filename)\n" 3893 " -> alias::tensor<Order, T, mem::tag::cpu> {}"); 3894 verifyFormat("auto SomeFunction(A aaaaaaaaaaaaaaaaaaaaa) const\n" 3895 " -> decltype(f(aaaaaaaaaaaaaaaaaaaaa)) {}"); 3896 verifyFormat("auto doSomething(Aaaaaa *aaaaaa) -> decltype(aaaaaa->f()) {}"); 3897 verifyFormat("template <typename T>\n" 3898 "auto aaaaaaaaaaaaaaaaaaaaaa(T t)\n" 3899 " -> decltype(eaaaaaaaaaaaaaaa<T>(t.a).aaaaaaaa());"); 3900 3901 // Not trailing return types. 3902 verifyFormat("void f() { auto a = b->c(); }"); 3903 } 3904 3905 TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) { 3906 // Avoid breaking before trailing 'const' or other trailing annotations, if 3907 // they are not function-like. 3908 FormatStyle Style = getGoogleStyle(); 3909 Style.ColumnLimit = 47; 3910 verifyFormat("void someLongFunction(\n" 3911 " int someLoooooooooooooongParameter) const {\n}", 3912 getLLVMStyleWithColumns(47)); 3913 verifyFormat("LoooooongReturnType\n" 3914 "someLoooooooongFunction() const {}", 3915 getLLVMStyleWithColumns(47)); 3916 verifyFormat("LoooooongReturnType someLoooooooongFunction()\n" 3917 " const {}", 3918 Style); 3919 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3920 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;"); 3921 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3922 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;"); 3923 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3924 " aaaaa aaaaaaaaaaaaaaaaaaaa) override final;"); 3925 verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n" 3926 " aaaaaaaaaaa aaaaa) const override;"); 3927 verifyGoogleFormat( 3928 "virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 3929 " const override;"); 3930 3931 // Even if the first parameter has to be wrapped. 3932 verifyFormat("void someLongFunction(\n" 3933 " int someLongParameter) const {}", 3934 getLLVMStyleWithColumns(46)); 3935 verifyFormat("void someLongFunction(\n" 3936 " int someLongParameter) const {}", 3937 Style); 3938 verifyFormat("void someLongFunction(\n" 3939 " int someLongParameter) override {}", 3940 Style); 3941 verifyFormat("void someLongFunction(\n" 3942 " int someLongParameter) OVERRIDE {}", 3943 Style); 3944 verifyFormat("void someLongFunction(\n" 3945 " int someLongParameter) final {}", 3946 Style); 3947 verifyFormat("void someLongFunction(\n" 3948 " int someLongParameter) FINAL {}", 3949 Style); 3950 verifyFormat("void someLongFunction(\n" 3951 " int parameter) const override {}", 3952 Style); 3953 3954 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 3955 verifyFormat("void someLongFunction(\n" 3956 " int someLongParameter) const\n" 3957 "{\n" 3958 "}", 3959 Style); 3960 3961 // Unless these are unknown annotations. 3962 verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n" 3963 " aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3964 " LONG_AND_UGLY_ANNOTATION;"); 3965 3966 // Breaking before function-like trailing annotations is fine to keep them 3967 // close to their arguments. 3968 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3969 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3970 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3971 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3972 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3973 " LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}"); 3974 verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n" 3975 " AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);"); 3976 verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});"); 3977 3978 verifyFormat( 3979 "void aaaaaaaaaaaaaaaaaa()\n" 3980 " __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n" 3981 " aaaaaaaaaaaaaaaaaaaaaaaaa));"); 3982 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3983 " __attribute__((unused));"); 3984 verifyGoogleFormat( 3985 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3986 " GUARDED_BY(aaaaaaaaaaaa);"); 3987 verifyGoogleFormat( 3988 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3989 " GUARDED_BY(aaaaaaaaaaaa);"); 3990 verifyGoogleFormat( 3991 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n" 3992 " aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 3993 verifyGoogleFormat( 3994 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n" 3995 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 3996 } 3997 3998 TEST_F(FormatTest, FunctionAnnotations) { 3999 verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n" 4000 "int OldFunction(const string ¶meter) {}"); 4001 verifyFormat("DEPRECATED(\"Use NewClass::NewFunction instead.\")\n" 4002 "string OldFunction(const string ¶meter) {}"); 4003 verifyFormat("template <typename T>\n" 4004 "DEPRECATED(\"Use NewClass::NewFunction instead.\")\n" 4005 "string OldFunction(const string ¶meter) {}"); 4006 4007 // Not function annotations. 4008 verifyFormat("ASSERT(\"aaaaa\") << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4009 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"); 4010 verifyFormat("TEST_F(ThisIsATestFixtureeeeeeeeeeeee,\n" 4011 " ThisIsATestWithAReallyReallyReallyReallyLongName) {}"); 4012 verifyFormat("MACRO(abc).function() // wrap\n" 4013 " << abc;"); 4014 verifyFormat("MACRO(abc)->function() // wrap\n" 4015 " << abc;"); 4016 verifyFormat("MACRO(abc)::function() // wrap\n" 4017 " << abc;"); 4018 } 4019 4020 TEST_F(FormatTest, BreaksDesireably) { 4021 verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 4022 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 4023 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}"); 4024 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4025 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" 4026 "}"); 4027 4028 verifyFormat( 4029 "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4030 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 4031 4032 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4033 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4034 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 4035 4036 verifyFormat( 4037 "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4038 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 4039 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4040 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));"); 4041 4042 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 4043 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4044 4045 verifyFormat( 4046 "void f() {\n" 4047 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 4048 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 4049 "}"); 4050 verifyFormat( 4051 "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4052 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 4053 verifyFormat( 4054 "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4055 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 4056 verifyFormat("aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4057 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4058 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4059 4060 // Indent consistently independent of call expression and unary operator. 4061 verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 4062 " dddddddddddddddddddddddddddddd));"); 4063 verifyFormat("aaaaaaaaaaa(!bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 4064 " dddddddddddddddddddddddddddddd));"); 4065 verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n" 4066 " dddddddddddddddddddddddddddddd));"); 4067 4068 // This test case breaks on an incorrect memoization, i.e. an optimization not 4069 // taking into account the StopAt value. 4070 verifyFormat( 4071 "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 4072 " aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 4073 " aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 4074 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4075 4076 verifyFormat("{\n {\n {\n" 4077 " Annotation.SpaceRequiredBefore =\n" 4078 " Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n" 4079 " Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n" 4080 " }\n }\n}"); 4081 4082 // Break on an outer level if there was a break on an inner level. 4083 EXPECT_EQ("f(g(h(a, // comment\n" 4084 " b, c),\n" 4085 " d, e),\n" 4086 " x, y);", 4087 format("f(g(h(a, // comment\n" 4088 " b, c), d, e), x, y);")); 4089 4090 // Prefer breaking similar line breaks. 4091 verifyFormat( 4092 "const int kTrackingOptions = NSTrackingMouseMoved |\n" 4093 " NSTrackingMouseEnteredAndExited |\n" 4094 " NSTrackingActiveAlways;"); 4095 } 4096 4097 TEST_F(FormatTest, FormatsDeclarationsOnePerLine) { 4098 FormatStyle NoBinPacking = getGoogleStyle(); 4099 NoBinPacking.BinPackParameters = false; 4100 NoBinPacking.BinPackArguments = true; 4101 verifyFormat("void f() {\n" 4102 " f(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaa,\n" 4103 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 4104 "}", 4105 NoBinPacking); 4106 verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaa,\n" 4107 " int aaaaaaaaaaaaaaaaaaaa,\n" 4108 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 4109 NoBinPacking); 4110 4111 NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false; 4112 verifyFormat("void aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4113 " vector<int> bbbbbbbbbbbbbbb);", 4114 NoBinPacking); 4115 // FIXME: This behavior difference is probably not wanted. However, currently 4116 // we cannot distinguish BreakBeforeParameter being set because of the wrapped 4117 // template arguments from BreakBeforeParameter being set because of the 4118 // one-per-line formatting. 4119 verifyFormat( 4120 "void fffffffffff(aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa,\n" 4121 " aaaaaaaaaa> aaaaaaaaaa);", 4122 NoBinPacking); 4123 verifyFormat( 4124 "void fffffffffff(\n" 4125 " aaaaaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaa>\n" 4126 " aaaaaaaaaa);"); 4127 } 4128 4129 TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) { 4130 FormatStyle NoBinPacking = getGoogleStyle(); 4131 NoBinPacking.BinPackParameters = false; 4132 NoBinPacking.BinPackArguments = false; 4133 verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n" 4134 " aaaaaaaaaaaaaaaaaaaa,\n" 4135 " aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);", 4136 NoBinPacking); 4137 verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n" 4138 " aaaaaaaaaaaaa,\n" 4139 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));", 4140 NoBinPacking); 4141 verifyFormat( 4142 "aaaaaaaa(aaaaaaaaaaaaa,\n" 4143 " aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4144 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 4145 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4146 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));", 4147 NoBinPacking); 4148 verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 4149 " .aaaaaaaaaaaaaaaaaa();", 4150 NoBinPacking); 4151 verifyFormat("void f() {\n" 4152 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4153 " aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n" 4154 "}", 4155 NoBinPacking); 4156 4157 verifyFormat( 4158 "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4159 " aaaaaaaaaaaa,\n" 4160 " aaaaaaaaaaaa);", 4161 NoBinPacking); 4162 verifyFormat( 4163 "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n" 4164 " ddddddddddddddddddddddddddddd),\n" 4165 " test);", 4166 NoBinPacking); 4167 4168 verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n" 4169 " aaaaaaaaaaaaaaaaaaaaaaa,\n" 4170 " aaaaaaaaaaaaaaaaaaaaaaa>\n" 4171 " aaaaaaaaaaaaaaaaaa;", 4172 NoBinPacking); 4173 verifyFormat("a(\"a\"\n" 4174 " \"a\",\n" 4175 " a);"); 4176 4177 NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false; 4178 verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n" 4179 " aaaaaaaaa,\n" 4180 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4181 NoBinPacking); 4182 verifyFormat( 4183 "void f() {\n" 4184 " aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 4185 " .aaaaaaa();\n" 4186 "}", 4187 NoBinPacking); 4188 verifyFormat( 4189 "template <class SomeType, class SomeOtherType>\n" 4190 "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}", 4191 NoBinPacking); 4192 } 4193 4194 TEST_F(FormatTest, AdaptiveOnePerLineFormatting) { 4195 FormatStyle Style = getLLVMStyleWithColumns(15); 4196 Style.ExperimentalAutoDetectBinPacking = true; 4197 EXPECT_EQ("aaa(aaaa,\n" 4198 " aaaa,\n" 4199 " aaaa);\n" 4200 "aaa(aaaa,\n" 4201 " aaaa,\n" 4202 " aaaa);", 4203 format("aaa(aaaa,\n" // one-per-line 4204 " aaaa,\n" 4205 " aaaa );\n" 4206 "aaa(aaaa, aaaa, aaaa);", // inconclusive 4207 Style)); 4208 EXPECT_EQ("aaa(aaaa, aaaa,\n" 4209 " aaaa);\n" 4210 "aaa(aaaa, aaaa,\n" 4211 " aaaa);", 4212 format("aaa(aaaa, aaaa,\n" // bin-packed 4213 " aaaa );\n" 4214 "aaa(aaaa, aaaa, aaaa);", // inconclusive 4215 Style)); 4216 } 4217 4218 TEST_F(FormatTest, FormatsBuilderPattern) { 4219 verifyFormat("return llvm::StringSwitch<Reference::Kind>(name)\n" 4220 " .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n" 4221 " .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n" 4222 " .StartsWith(\".init\", ORDER_INIT)\n" 4223 " .StartsWith(\".fini\", ORDER_FINI)\n" 4224 " .StartsWith(\".hash\", ORDER_HASH)\n" 4225 " .Default(ORDER_TEXT);\n"); 4226 4227 verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n" 4228 " aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();"); 4229 verifyFormat( 4230 "aaaaaaa->aaaaaaa\n" 4231 " ->aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4232 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4233 " ->aaaaaaaa(aaaaaaaaaaaaaaa);"); 4234 verifyFormat( 4235 "aaaaaaa->aaaaaaa\n" 4236 " ->aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4237 " ->aaaaaaaa(aaaaaaaaaaaaaaa);"); 4238 verifyFormat( 4239 "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n" 4240 " aaaaaaaaaaaaaa);"); 4241 verifyFormat( 4242 "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n" 4243 " aaaaaa->aaaaaaaaaaaa()\n" 4244 " ->aaaaaaaaaaaaaaaa(\n" 4245 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4246 " ->aaaaaaaaaaaaaaaaa();"); 4247 verifyGoogleFormat( 4248 "void f() {\n" 4249 " someo->Add((new util::filetools::Handler(dir))\n" 4250 " ->OnEvent1(NewPermanentCallback(\n" 4251 " this, &HandlerHolderClass::EventHandlerCBA))\n" 4252 " ->OnEvent2(NewPermanentCallback(\n" 4253 " this, &HandlerHolderClass::EventHandlerCBB))\n" 4254 " ->OnEvent3(NewPermanentCallback(\n" 4255 " this, &HandlerHolderClass::EventHandlerCBC))\n" 4256 " ->OnEvent5(NewPermanentCallback(\n" 4257 " this, &HandlerHolderClass::EventHandlerCBD))\n" 4258 " ->OnEvent6(NewPermanentCallback(\n" 4259 " this, &HandlerHolderClass::EventHandlerCBE)));\n" 4260 "}"); 4261 4262 verifyFormat( 4263 "aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();"); 4264 verifyFormat("aaaaaaaaaaaaaaa()\n" 4265 " .aaaaaaaaaaaaaaa()\n" 4266 " .aaaaaaaaaaaaaaa()\n" 4267 " .aaaaaaaaaaaaaaa()\n" 4268 " .aaaaaaaaaaaaaaa();"); 4269 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4270 " .aaaaaaaaaaaaaaa()\n" 4271 " .aaaaaaaaaaaaaaa()\n" 4272 " .aaaaaaaaaaaaaaa();"); 4273 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4274 " .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4275 " .aaaaaaaaaaaaaaa();"); 4276 verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n" 4277 " ->aaaaaaaaaaaaaae(0)\n" 4278 " ->aaaaaaaaaaaaaaa();"); 4279 4280 // Don't linewrap after very short segments. 4281 verifyFormat("a().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4282 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4283 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4284 verifyFormat("aa().aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4285 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4286 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4287 verifyFormat("aaa()\n" 4288 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4289 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4290 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4291 4292 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 4293 " .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4294 " .has<bbbbbbbbbbbbbbbbbbbbb>();"); 4295 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 4296 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 4297 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();"); 4298 4299 // Prefer not to break after empty parentheses. 4300 verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n" 4301 " First->LastNewlineOffset);"); 4302 4303 // Prefer not to create "hanging" indents. 4304 verifyFormat( 4305 "return !soooooooooooooome_map\n" 4306 " .insert(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4307 " .second;"); 4308 verifyFormat( 4309 "return aaaaaaaaaaaaaaaa\n" 4310 " .aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa)\n" 4311 " .aaaa(aaaaaaaaaaaaaa);"); 4312 // No hanging indent here. 4313 verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa.aaaaaaaaaaaaaaa(\n" 4314 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4315 verifyFormat("aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaa().aaaaaaaaaaaaaaa(\n" 4316 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4317 verifyFormat("aaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n" 4318 " .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4319 getLLVMStyleWithColumns(60)); 4320 verifyFormat("aaaaaaaaaaaaaaaaaa\n" 4321 " .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa)\n" 4322 " .aaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4323 getLLVMStyleWithColumns(59)); 4324 verifyFormat("aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4325 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4326 " .aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4327 } 4328 4329 TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) { 4330 verifyFormat( 4331 "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 4332 " bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}"); 4333 verifyFormat( 4334 "if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n" 4335 " bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}"); 4336 4337 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 4338 " ccccccccccccccccccccccccc) {\n}"); 4339 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n" 4340 " ccccccccccccccccccccccccc) {\n}"); 4341 4342 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 4343 " ccccccccccccccccccccccccc) {\n}"); 4344 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n" 4345 " ccccccccccccccccccccccccc) {\n}"); 4346 4347 verifyFormat( 4348 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n" 4349 " ccccccccccccccccccccccccc) {\n}"); 4350 verifyFormat( 4351 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n" 4352 " ccccccccccccccccccccccccc) {\n}"); 4353 4354 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n" 4355 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n" 4356 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n" 4357 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 4358 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n" 4359 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n" 4360 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n" 4361 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 4362 4363 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n" 4364 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n" 4365 " aaaaaaaaaaaaaaa != aa) {\n}"); 4366 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n" 4367 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n" 4368 " aaaaaaaaaaaaaaa != aa) {\n}"); 4369 } 4370 4371 TEST_F(FormatTest, BreaksAfterAssignments) { 4372 verifyFormat( 4373 "unsigned Cost =\n" 4374 " TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n" 4375 " SI->getPointerAddressSpaceee());\n"); 4376 verifyFormat( 4377 "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n" 4378 " Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());"); 4379 4380 verifyFormat( 4381 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n" 4382 " aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);"); 4383 verifyFormat("unsigned OriginalStartColumn =\n" 4384 " SourceMgr.getSpellingColumnNumber(\n" 4385 " Current.FormatTok.getStartOfNonWhitespace()) -\n" 4386 " 1;"); 4387 } 4388 4389 TEST_F(FormatTest, AlignsAfterAssignments) { 4390 verifyFormat( 4391 "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4392 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4393 verifyFormat( 4394 "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4395 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4396 verifyFormat( 4397 "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4398 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4399 verifyFormat( 4400 "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4401 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 4402 verifyFormat( 4403 "double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n" 4404 " aaaaaaaaaaaaaaaaaaaaaaaa +\n" 4405 " aaaaaaaaaaaaaaaaaaaaaaaa;"); 4406 } 4407 4408 TEST_F(FormatTest, AlignsAfterReturn) { 4409 verifyFormat( 4410 "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4411 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4412 verifyFormat( 4413 "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4414 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 4415 verifyFormat( 4416 "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 4417 " aaaaaaaaaaaaaaaaaaaaaa();"); 4418 verifyFormat( 4419 "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 4420 " aaaaaaaaaaaaaaaaaaaaaa());"); 4421 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4422 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4423 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4424 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n" 4425 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4426 verifyFormat("return\n" 4427 " // true if code is one of a or b.\n" 4428 " code == a || code == b;"); 4429 } 4430 4431 TEST_F(FormatTest, AlignsAfterOpenBracket) { 4432 verifyFormat( 4433 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" 4434 " aaaaaaaaa aaaaaaa) {}"); 4435 verifyFormat( 4436 "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" 4437 " aaaaaaaaaaa aaaaaaaaa);"); 4438 verifyFormat( 4439 "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" 4440 " aaaaaaaaaaaaaaaaaaaaa));"); 4441 FormatStyle Style = getLLVMStyle(); 4442 Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; 4443 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4444 " aaaaaaaaaaa aaaaaaaa, aaaaaaaaa aaaaaaa) {}", 4445 Style); 4446 verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n" 4447 " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaa aaaaaaaaa);", 4448 Style); 4449 verifyFormat("SomeLongVariableName->someFunction(\n" 4450 " foooooooo(aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa));", 4451 Style); 4452 verifyFormat( 4453 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" 4454 " aaaaaaaaa aaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 4455 Style); 4456 verifyFormat( 4457 "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" 4458 " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4459 Style); 4460 verifyFormat( 4461 "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" 4462 " aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));", 4463 Style); 4464 4465 verifyFormat("bbbbbbbbbbbb(aaaaaaaaaaaaaaaaaaaaaaaa, //\n" 4466 " ccccccc(aaaaaaaaaaaaaaaaa, //\n" 4467 " b));", 4468 Style); 4469 4470 Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak; 4471 Style.BinPackArguments = false; 4472 Style.BinPackParameters = false; 4473 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4474 " aaaaaaaaaaa aaaaaaaa,\n" 4475 " aaaaaaaaa aaaaaaa,\n" 4476 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 4477 Style); 4478 verifyFormat("SomeLongVariableName->someVeryLongFunctionName(\n" 4479 " aaaaaaaaaaa aaaaaaaaa,\n" 4480 " aaaaaaaaaaa aaaaaaaaa,\n" 4481 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4482 Style); 4483 verifyFormat("SomeLongVariableName->someFunction(foooooooo(\n" 4484 " aaaaaaaaaaaaaaa,\n" 4485 " aaaaaaaaaaaaaaaaaaaaa,\n" 4486 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));", 4487 Style); 4488 verifyFormat( 4489 "aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa(\n" 4490 " aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)));", 4491 Style); 4492 verifyFormat( 4493 "aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaa.aaaaaaaaaa(\n" 4494 " aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)));", 4495 Style); 4496 verifyFormat( 4497 "aaaaaaaaaaaaaaaaaaaaaaaa(\n" 4498 " aaaaaaaaaaaaaaaaaaaaa(\n" 4499 " aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)),\n" 4500 " aaaaaaaaaaaaaaaa);", 4501 Style); 4502 verifyFormat( 4503 "aaaaaaaaaaaaaaaaaaaaaaaa(\n" 4504 " aaaaaaaaaaaaaaaaaaaaa(\n" 4505 " aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa)) &&\n" 4506 " aaaaaaaaaaaaaaaa);", 4507 Style); 4508 } 4509 4510 TEST_F(FormatTest, ParenthesesAndOperandAlignment) { 4511 FormatStyle Style = getLLVMStyleWithColumns(40); 4512 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4513 " bbbbbbbbbbbbbbbbbbbbbb);", 4514 Style); 4515 Style.AlignAfterOpenBracket = FormatStyle::BAS_Align; 4516 Style.AlignOperands = false; 4517 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4518 " bbbbbbbbbbbbbbbbbbbbbb);", 4519 Style); 4520 Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; 4521 Style.AlignOperands = true; 4522 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4523 " bbbbbbbbbbbbbbbbbbbbbb);", 4524 Style); 4525 Style.AlignAfterOpenBracket = FormatStyle::BAS_DontAlign; 4526 Style.AlignOperands = false; 4527 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4528 " bbbbbbbbbbbbbbbbbbbbbb);", 4529 Style); 4530 } 4531 4532 TEST_F(FormatTest, BreaksConditionalExpressions) { 4533 verifyFormat( 4534 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4535 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4536 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4537 verifyFormat( 4538 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4539 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4540 verifyFormat( 4541 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n" 4542 " : aaaaaaaaaaaaa);"); 4543 verifyFormat( 4544 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4545 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4546 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4547 " aaaaaaaaaaaaa);"); 4548 verifyFormat( 4549 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4550 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4551 " aaaaaaaaaaaaa);"); 4552 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4553 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4554 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4555 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4556 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4557 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4558 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4559 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4560 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4561 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4562 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4563 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4564 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4565 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4566 " ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4567 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4568 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4569 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4570 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4571 " : aaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4572 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 4573 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4574 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4575 " : aaaaaaaaaaaaaaaa;"); 4576 verifyFormat( 4577 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4578 " ? aaaaaaaaaaaaaaa\n" 4579 " : aaaaaaaaaaaaaaa;"); 4580 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 4581 " aaaaaaaaa\n" 4582 " ? b\n" 4583 " : c);"); 4584 verifyFormat("return aaaa == bbbb\n" 4585 " // comment\n" 4586 " ? aaaa\n" 4587 " : bbbb;"); 4588 verifyFormat("unsigned Indent =\n" 4589 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n" 4590 " ? IndentForLevel[TheLine.Level]\n" 4591 " : TheLine * 2,\n" 4592 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4593 getLLVMStyleWithColumns(70)); 4594 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4595 " ? aaaaaaaaaaaaaaa\n" 4596 " : bbbbbbbbbbbbbbb //\n" 4597 " ? ccccccccccccccc\n" 4598 " : ddddddddddddddd;"); 4599 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4600 " ? aaaaaaaaaaaaaaa\n" 4601 " : (bbbbbbbbbbbbbbb //\n" 4602 " ? ccccccccccccccc\n" 4603 " : ddddddddddddddd);"); 4604 verifyFormat( 4605 "int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4606 " ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4607 " aaaaaaaaaaaaaaaaaaaaa +\n" 4608 " aaaaaaaaaaaaaaaaaaaaa\n" 4609 " : aaaaaaaaaa;"); 4610 verifyFormat( 4611 "aaaaaa = aaaaaaaaaaaa\n" 4612 " ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4613 " : aaaaaaaaaaaaaaaaaaaaaa\n" 4614 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4615 4616 FormatStyle NoBinPacking = getLLVMStyle(); 4617 NoBinPacking.BinPackArguments = false; 4618 verifyFormat( 4619 "void f() {\n" 4620 " g(aaa,\n" 4621 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4622 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4623 " ? aaaaaaaaaaaaaaa\n" 4624 " : aaaaaaaaaaaaaaa);\n" 4625 "}", 4626 NoBinPacking); 4627 verifyFormat( 4628 "void f() {\n" 4629 " g(aaa,\n" 4630 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4631 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4632 " ?: aaaaaaaaaaaaaaa);\n" 4633 "}", 4634 NoBinPacking); 4635 4636 verifyFormat("SomeFunction(aaaaaaaaaaaaaaaaa,\n" 4637 " // comment.\n" 4638 " ccccccccccccccccccccccccccccccccccccccc\n" 4639 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4640 " : bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);"); 4641 4642 // Assignments in conditional expressions. Apparently not uncommon :-(. 4643 verifyFormat("return a != b\n" 4644 " // comment\n" 4645 " ? a = b\n" 4646 " : a = b;"); 4647 verifyFormat("return a != b\n" 4648 " // comment\n" 4649 " ? a = a != b\n" 4650 " // comment\n" 4651 " ? a = b\n" 4652 " : a\n" 4653 " : a;\n"); 4654 verifyFormat("return a != b\n" 4655 " // comment\n" 4656 " ? a\n" 4657 " : a = a != b\n" 4658 " // comment\n" 4659 " ? a = b\n" 4660 " : a;"); 4661 } 4662 4663 TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) { 4664 FormatStyle Style = getLLVMStyle(); 4665 Style.BreakBeforeTernaryOperators = false; 4666 Style.ColumnLimit = 70; 4667 verifyFormat( 4668 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4669 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4670 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4671 Style); 4672 verifyFormat( 4673 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4674 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4675 Style); 4676 verifyFormat( 4677 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n" 4678 " aaaaaaaaaaaaa);", 4679 Style); 4680 verifyFormat( 4681 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4682 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4683 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4684 " aaaaaaaaaaaaa);", 4685 Style); 4686 verifyFormat( 4687 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4688 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4689 " aaaaaaaaaaaaa);", 4690 Style); 4691 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4692 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4693 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4694 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4695 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4696 Style); 4697 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4698 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4699 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4700 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4701 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4702 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4703 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4704 Style); 4705 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4706 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n" 4707 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4708 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4709 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4710 Style); 4711 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4712 " aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4713 " aaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4714 Style); 4715 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 4716 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4717 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4718 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4719 Style); 4720 verifyFormat( 4721 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4722 " aaaaaaaaaaaaaaa :\n" 4723 " aaaaaaaaaaaaaaa;", 4724 Style); 4725 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 4726 " aaaaaaaaa ?\n" 4727 " b :\n" 4728 " c);", 4729 Style); 4730 verifyFormat( 4731 "unsigned Indent =\n" 4732 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0 ?\n" 4733 " IndentForLevel[TheLine.Level] :\n" 4734 " TheLine * 2,\n" 4735 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4736 Style); 4737 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4738 " aaaaaaaaaaaaaaa :\n" 4739 " bbbbbbbbbbbbbbb ? //\n" 4740 " ccccccccccccccc :\n" 4741 " ddddddddddddddd;", 4742 Style); 4743 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4744 " aaaaaaaaaaaaaaa :\n" 4745 " (bbbbbbbbbbbbbbb ? //\n" 4746 " ccccccccccccccc :\n" 4747 " ddddddddddddddd);", 4748 Style); 4749 verifyFormat("int i = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4750 " /*bbbbbbbbbbbbbbb=*/bbbbbbbbbbbbbbbbbbbbbbbbb :\n" 4751 " ccccccccccccccccccccccccccc;", 4752 Style); 4753 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4754 " aaaaa :\n" 4755 " bbbbbbbbbbbbbbb + cccccccccccccccc;", 4756 Style); 4757 } 4758 4759 TEST_F(FormatTest, DeclarationsOfMultipleVariables) { 4760 verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n" 4761 " aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();"); 4762 verifyFormat("bool a = true, b = false;"); 4763 4764 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4765 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n" 4766 " bbbbbbbbbbbbbbbbbbbbbbbbb =\n" 4767 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);"); 4768 verifyFormat( 4769 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 4770 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n" 4771 " d = e && f;"); 4772 verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n" 4773 " c = cccccccccccccccccccc, d = dddddddddddddddddddd;"); 4774 verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" 4775 " *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;"); 4776 verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n" 4777 " ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;"); 4778 4779 FormatStyle Style = getGoogleStyle(); 4780 Style.PointerAlignment = FormatStyle::PAS_Left; 4781 Style.DerivePointerAlignment = false; 4782 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4783 " *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n" 4784 " *b = bbbbbbbbbbbbbbbbbbb;", 4785 Style); 4786 verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" 4787 " *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;", 4788 Style); 4789 } 4790 4791 TEST_F(FormatTest, ConditionalExpressionsInBrackets) { 4792 verifyFormat("arr[foo ? bar : baz];"); 4793 verifyFormat("f()[foo ? bar : baz];"); 4794 verifyFormat("(a + b)[foo ? bar : baz];"); 4795 verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];"); 4796 } 4797 4798 TEST_F(FormatTest, AlignsStringLiterals) { 4799 verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n" 4800 " \"short literal\");"); 4801 verifyFormat( 4802 "looooooooooooooooooooooooongFunction(\n" 4803 " \"short literal\"\n" 4804 " \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");"); 4805 verifyFormat("someFunction(\"Always break between multi-line\"\n" 4806 " \" string literals\",\n" 4807 " and, other, parameters);"); 4808 EXPECT_EQ("fun + \"1243\" /* comment */\n" 4809 " \"5678\";", 4810 format("fun + \"1243\" /* comment */\n" 4811 " \"5678\";", 4812 getLLVMStyleWithColumns(28))); 4813 EXPECT_EQ( 4814 "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 4815 " \"aaaaaaaaaaaaaaaaaaaaa\"\n" 4816 " \"aaaaaaaaaaaaaaaa\";", 4817 format("aaaaaa =" 4818 "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa " 4819 "aaaaaaaaaaaaaaaaaaaaa\" " 4820 "\"aaaaaaaaaaaaaaaa\";")); 4821 verifyFormat("a = a + \"a\"\n" 4822 " \"a\"\n" 4823 " \"a\";"); 4824 verifyFormat("f(\"a\", \"b\"\n" 4825 " \"c\");"); 4826 4827 verifyFormat( 4828 "#define LL_FORMAT \"ll\"\n" 4829 "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n" 4830 " \"d, ddddddddd: %\" LL_FORMAT \"d\");"); 4831 4832 verifyFormat("#define A(X) \\\n" 4833 " \"aaaaa\" #X \"bbbbbb\" \\\n" 4834 " \"ccccc\"", 4835 getLLVMStyleWithColumns(23)); 4836 verifyFormat("#define A \"def\"\n" 4837 "f(\"abc\" A \"ghi\"\n" 4838 " \"jkl\");"); 4839 4840 verifyFormat("f(L\"a\"\n" 4841 " L\"b\");"); 4842 verifyFormat("#define A(X) \\\n" 4843 " L\"aaaaa\" #X L\"bbbbbb\" \\\n" 4844 " L\"ccccc\"", 4845 getLLVMStyleWithColumns(25)); 4846 4847 verifyFormat("f(@\"a\"\n" 4848 " @\"b\");"); 4849 verifyFormat("NSString s = @\"a\"\n" 4850 " @\"b\"\n" 4851 " @\"c\";"); 4852 verifyFormat("NSString s = @\"a\"\n" 4853 " \"b\"\n" 4854 " \"c\";"); 4855 } 4856 4857 TEST_F(FormatTest, ReturnTypeBreakingStyle) { 4858 FormatStyle Style = getLLVMStyle(); 4859 // No declarations or definitions should be moved to own line. 4860 Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_None; 4861 verifyFormat("class A {\n" 4862 " int f() { return 1; }\n" 4863 " int g();\n" 4864 "};\n" 4865 "int f() { return 1; }\n" 4866 "int g();\n", 4867 Style); 4868 4869 // All declarations and definitions should have the return type moved to its 4870 // own 4871 // line. 4872 Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All; 4873 verifyFormat("class E {\n" 4874 " int\n" 4875 " f() {\n" 4876 " return 1;\n" 4877 " }\n" 4878 " int\n" 4879 " g();\n" 4880 "};\n" 4881 "int\n" 4882 "f() {\n" 4883 " return 1;\n" 4884 "}\n" 4885 "int\n" 4886 "g();\n", 4887 Style); 4888 4889 // Top-level definitions, and no kinds of declarations should have the 4890 // return type moved to its own line. 4891 Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevelDefinitions; 4892 verifyFormat("class B {\n" 4893 " int f() { return 1; }\n" 4894 " int g();\n" 4895 "};\n" 4896 "int\n" 4897 "f() {\n" 4898 " return 1;\n" 4899 "}\n" 4900 "int g();\n", 4901 Style); 4902 4903 // Top-level definitions and declarations should have the return type moved 4904 // to its own line. 4905 Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_TopLevel; 4906 verifyFormat("class C {\n" 4907 " int f() { return 1; }\n" 4908 " int g();\n" 4909 "};\n" 4910 "int\n" 4911 "f() {\n" 4912 " return 1;\n" 4913 "}\n" 4914 "int\n" 4915 "g();\n", 4916 Style); 4917 4918 // All definitions should have the return type moved to its own line, but no 4919 // kinds of declarations. 4920 Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_AllDefinitions; 4921 verifyFormat("class D {\n" 4922 " int\n" 4923 " f() {\n" 4924 " return 1;\n" 4925 " }\n" 4926 " int g();\n" 4927 "};\n" 4928 "int\n" 4929 "f() {\n" 4930 " return 1;\n" 4931 "}\n" 4932 "int g();\n", 4933 Style); 4934 verifyFormat("const char *\n" 4935 "f(void) {\n" // Break here. 4936 " return \"\";\n" 4937 "}\n" 4938 "const char *bar(void);\n", // No break here. 4939 Style); 4940 verifyFormat("template <class T>\n" 4941 "T *\n" 4942 "f(T &c) {\n" // Break here. 4943 " return NULL;\n" 4944 "}\n" 4945 "template <class T> T *f(T &c);\n", // No break here. 4946 Style); 4947 verifyFormat("class C {\n" 4948 " int\n" 4949 " operator+() {\n" 4950 " return 1;\n" 4951 " }\n" 4952 " int\n" 4953 " operator()() {\n" 4954 " return 1;\n" 4955 " }\n" 4956 "};\n", 4957 Style); 4958 verifyFormat("void\n" 4959 "A::operator()() {}\n" 4960 "void\n" 4961 "A::operator>>() {}\n" 4962 "void\n" 4963 "A::operator+() {}\n", 4964 Style); 4965 verifyFormat("void *operator new(std::size_t s);", // No break here. 4966 Style); 4967 verifyFormat("void *\n" 4968 "operator new(std::size_t s) {}", 4969 Style); 4970 verifyFormat("void *\n" 4971 "operator delete[](void *ptr) {}", 4972 Style); 4973 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 4974 verifyFormat("const char *\n" 4975 "f(void)\n" // Break here. 4976 "{\n" 4977 " return \"\";\n" 4978 "}\n" 4979 "const char *bar(void);\n", // No break here. 4980 Style); 4981 verifyFormat("template <class T>\n" 4982 "T *\n" // Problem here: no line break 4983 "f(T &c)\n" // Break here. 4984 "{\n" 4985 " return NULL;\n" 4986 "}\n" 4987 "template <class T> T *f(T &c);\n", // No break here. 4988 Style); 4989 } 4990 4991 TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) { 4992 FormatStyle NoBreak = getLLVMStyle(); 4993 NoBreak.AlwaysBreakBeforeMultilineStrings = false; 4994 FormatStyle Break = getLLVMStyle(); 4995 Break.AlwaysBreakBeforeMultilineStrings = true; 4996 verifyFormat("aaaa = \"bbbb\"\n" 4997 " \"cccc\";", 4998 NoBreak); 4999 verifyFormat("aaaa =\n" 5000 " \"bbbb\"\n" 5001 " \"cccc\";", 5002 Break); 5003 verifyFormat("aaaa(\"bbbb\"\n" 5004 " \"cccc\");", 5005 NoBreak); 5006 verifyFormat("aaaa(\n" 5007 " \"bbbb\"\n" 5008 " \"cccc\");", 5009 Break); 5010 verifyFormat("aaaa(qqq, \"bbbb\"\n" 5011 " \"cccc\");", 5012 NoBreak); 5013 verifyFormat("aaaa(qqq,\n" 5014 " \"bbbb\"\n" 5015 " \"cccc\");", 5016 Break); 5017 verifyFormat("aaaa(qqq,\n" 5018 " L\"bbbb\"\n" 5019 " L\"cccc\");", 5020 Break); 5021 verifyFormat("aaaaa(aaaaaa, aaaaaaa(\"aaaa\"\n" 5022 " \"bbbb\"));", 5023 Break); 5024 verifyFormat("string s = someFunction(\n" 5025 " \"abc\"\n" 5026 " \"abc\");", 5027 Break); 5028 5029 // As we break before unary operators, breaking right after them is bad. 5030 verifyFormat("string foo = abc ? \"x\"\n" 5031 " \"blah blah blah blah blah blah\"\n" 5032 " : \"y\";", 5033 Break); 5034 5035 // Don't break if there is no column gain. 5036 verifyFormat("f(\"aaaa\"\n" 5037 " \"bbbb\");", 5038 Break); 5039 5040 // Treat literals with escaped newlines like multi-line string literals. 5041 EXPECT_EQ("x = \"a\\\n" 5042 "b\\\n" 5043 "c\";", 5044 format("x = \"a\\\n" 5045 "b\\\n" 5046 "c\";", 5047 NoBreak)); 5048 EXPECT_EQ("xxxx =\n" 5049 " \"a\\\n" 5050 "b\\\n" 5051 "c\";", 5052 format("xxxx = \"a\\\n" 5053 "b\\\n" 5054 "c\";", 5055 Break)); 5056 5057 // Exempt ObjC strings for now. 5058 EXPECT_EQ("NSString *const kString = @\"aaaa\"\n" 5059 " @\"bbbb\";", 5060 format("NSString *const kString = @\"aaaa\"\n" 5061 "@\"bbbb\";", 5062 Break)); 5063 5064 Break.ColumnLimit = 0; 5065 verifyFormat("const char *hello = \"hello llvm\";", Break); 5066 } 5067 5068 TEST_F(FormatTest, AlignsPipes) { 5069 verifyFormat( 5070 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5071 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5072 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5073 verifyFormat( 5074 "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n" 5075 " << aaaaaaaaaaaaaaaaaaaa;"); 5076 verifyFormat( 5077 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5078 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5079 verifyFormat( 5080 "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n" 5081 " \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n" 5082 " << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";"); 5083 verifyFormat( 5084 "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5085 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5086 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5087 verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5088 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5089 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5090 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 5091 verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaaaaaa: \"\n" 5092 " << aaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaa);"); 5093 verifyFormat( 5094 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5095 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5096 5097 verifyFormat("return out << \"somepacket = {\\n\"\n" 5098 " << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n" 5099 " << \" bbbb = \" << pkt.bbbb << \"\\n\"\n" 5100 " << \" cccccc = \" << pkt.cccccc << \"\\n\"\n" 5101 " << \" ddd = [\" << pkt.ddd << \"]\\n\"\n" 5102 " << \"}\";"); 5103 5104 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 5105 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 5106 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;"); 5107 verifyFormat( 5108 "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n" 5109 " << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n" 5110 " << \"ccccccccccccccccc = \" << ccccccccccccccccc\n" 5111 " << \"ddddddddddddddddd = \" << ddddddddddddddddd\n" 5112 " << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;"); 5113 verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n" 5114 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 5115 verifyFormat( 5116 "void f() {\n" 5117 " llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n" 5118 " << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 5119 "}"); 5120 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n" 5121 " << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();"); 5122 verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5123 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5124 " aaaaaaaaaaaaaaaaaaaaa)\n" 5125 " << aaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5126 verifyFormat("LOG_IF(aaa == //\n" 5127 " bbb)\n" 5128 " << a << b;"); 5129 5130 // Breaking before the first "<<" is generally not desirable. 5131 verifyFormat( 5132 "llvm::errs()\n" 5133 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5134 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5135 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5136 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 5137 getLLVMStyleWithColumns(70)); 5138 verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n" 5139 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5140 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 5141 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5142 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 5143 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 5144 getLLVMStyleWithColumns(70)); 5145 5146 // But sometimes, breaking before the first "<<" is desirable. 5147 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n" 5148 " << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);"); 5149 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n" 5150 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5151 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5152 verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n" 5153 " << BEF << IsTemplate << Description << E->getType();"); 5154 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n" 5155 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5156 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5157 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n" 5158 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5159 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5160 " << aaa;"); 5161 5162 verifyFormat( 5163 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5164 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5165 5166 // Incomplete string literal. 5167 EXPECT_EQ("llvm::errs() << \"\n" 5168 " << a;", 5169 format("llvm::errs() << \"\n<<a;")); 5170 5171 verifyFormat("void f() {\n" 5172 " CHECK_EQ(aaaa, (*bbbbbbbbb)->cccccc)\n" 5173 " << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n" 5174 "}"); 5175 5176 // Handle 'endl'. 5177 verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << endl\n" 5178 " << bbbbbbbbbbbbbbbbbbbbbb << endl;"); 5179 verifyFormat("llvm::errs() << endl << bbbbbbbbbbbbbbbbbbbbbb << endl;"); 5180 5181 // Handle '\n'. 5182 verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \"\\n\"\n" 5183 " << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";"); 5184 verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << \'\\n\'\n" 5185 " << bbbbbbbbbbbbbbbbbbbbbb << \'\\n\';"); 5186 verifyFormat("llvm::errs() << aaaa << \"aaaaaaaaaaaaaaaaaa\\n\"\n" 5187 " << bbbb << \"bbbbbbbbbbbbbbbbbb\\n\";"); 5188 verifyFormat("llvm::errs() << \"\\n\" << bbbbbbbbbbbbbbbbbbbbbb << \"\\n\";"); 5189 } 5190 5191 TEST_F(FormatTest, UnderstandsEquals) { 5192 verifyFormat( 5193 "aaaaaaaaaaaaaaaaa =\n" 5194 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5195 verifyFormat( 5196 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5197 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 5198 verifyFormat( 5199 "if (a) {\n" 5200 " f();\n" 5201 "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5202 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 5203 "}"); 5204 5205 verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5206 " 100000000 + 10000000) {\n}"); 5207 } 5208 5209 TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) { 5210 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 5211 " .looooooooooooooooooooooooooooooooooooooongFunction();"); 5212 5213 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 5214 " ->looooooooooooooooooooooooooooooooooooooongFunction();"); 5215 5216 verifyFormat( 5217 "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n" 5218 " Parameter2);"); 5219 5220 verifyFormat( 5221 "ShortObject->shortFunction(\n" 5222 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n" 5223 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);"); 5224 5225 verifyFormat("loooooooooooooongFunction(\n" 5226 " LoooooooooooooongObject->looooooooooooooooongFunction());"); 5227 5228 verifyFormat( 5229 "function(LoooooooooooooooooooooooooooooooooooongObject\n" 5230 " ->loooooooooooooooooooooooooooooooooooooooongFunction());"); 5231 5232 verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 5233 " .WillRepeatedly(Return(SomeValue));"); 5234 verifyFormat("void f() {\n" 5235 " EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 5236 " .Times(2)\n" 5237 " .WillRepeatedly(Return(SomeValue));\n" 5238 "}"); 5239 verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n" 5240 " ccccccccccccccccccccccc);"); 5241 verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5242 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5243 " .aaaaa(aaaaa),\n" 5244 " aaaaaaaaaaaaaaaaaaaaa);"); 5245 verifyFormat("void f() {\n" 5246 " aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5247 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n" 5248 "}"); 5249 verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5250 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5251 " .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5252 " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5253 " aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 5254 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5255 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5256 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5257 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n" 5258 "}"); 5259 5260 // Here, it is not necessary to wrap at "." or "->". 5261 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n" 5262 " aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 5263 verifyFormat( 5264 "aaaaaaaaaaa->aaaaaaaaa(\n" 5265 " aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5266 " aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n"); 5267 5268 verifyFormat( 5269 "aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5270 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());"); 5271 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n" 5272 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 5273 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n" 5274 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 5275 5276 verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5277 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5278 " .a();"); 5279 5280 FormatStyle NoBinPacking = getLLVMStyle(); 5281 NoBinPacking.BinPackParameters = false; 5282 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 5283 " .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 5284 " .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n" 5285 " aaaaaaaaaaaaaaaaaaa,\n" 5286 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 5287 NoBinPacking); 5288 5289 // If there is a subsequent call, change to hanging indentation. 5290 verifyFormat( 5291 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5292 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n" 5293 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5294 verifyFormat( 5295 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5296 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));"); 5297 verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5298 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5299 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5300 verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5301 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 5302 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 5303 } 5304 5305 TEST_F(FormatTest, WrapsTemplateDeclarations) { 5306 verifyFormat("template <typename T>\n" 5307 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 5308 verifyFormat("template <typename T>\n" 5309 "// T should be one of {A, B}.\n" 5310 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 5311 verifyFormat( 5312 "template <typename T>\n" 5313 "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;"); 5314 verifyFormat("template <typename T>\n" 5315 "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n" 5316 " int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);"); 5317 verifyFormat( 5318 "template <typename T>\n" 5319 "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n" 5320 " int Paaaaaaaaaaaaaaaaaaaaram2);"); 5321 verifyFormat( 5322 "template <typename T>\n" 5323 "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n" 5324 " aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n" 5325 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5326 verifyFormat("template <typename T>\n" 5327 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5328 " int aaaaaaaaaaaaaaaaaaaaaa);"); 5329 verifyFormat( 5330 "template <typename T1, typename T2 = char, typename T3 = char,\n" 5331 " typename T4 = char>\n" 5332 "void f();"); 5333 verifyFormat("template <typename aaaaaaaaaaa, typename bbbbbbbbbbbbb,\n" 5334 " template <typename> class cccccccccccccccccccccc,\n" 5335 " typename ddddddddddddd>\n" 5336 "class C {};"); 5337 verifyFormat( 5338 "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n" 5339 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5340 5341 verifyFormat("void f() {\n" 5342 " a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n" 5343 " a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n" 5344 "}"); 5345 5346 verifyFormat("template <typename T> class C {};"); 5347 verifyFormat("template <typename T> void f();"); 5348 verifyFormat("template <typename T> void f() {}"); 5349 verifyFormat( 5350 "aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 5351 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5352 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n" 5353 " new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 5354 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5355 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n" 5356 " bbbbbbbbbbbbbbbbbbbbbbbb);", 5357 getLLVMStyleWithColumns(72)); 5358 EXPECT_EQ("static_cast<A< //\n" 5359 " B> *>(\n" 5360 "\n" 5361 " );", 5362 format("static_cast<A<//\n" 5363 " B>*>(\n" 5364 "\n" 5365 " );")); 5366 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5367 " const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);"); 5368 5369 FormatStyle AlwaysBreak = getLLVMStyle(); 5370 AlwaysBreak.AlwaysBreakTemplateDeclarations = true; 5371 verifyFormat("template <typename T>\nclass C {};", AlwaysBreak); 5372 verifyFormat("template <typename T>\nvoid f();", AlwaysBreak); 5373 verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak); 5374 verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5375 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n" 5376 " ccccccccccccccccccccccccccccccccccccccccccccccc);"); 5377 verifyFormat("template <template <typename> class Fooooooo,\n" 5378 " template <typename> class Baaaaaaar>\n" 5379 "struct C {};", 5380 AlwaysBreak); 5381 verifyFormat("template <typename T> // T can be A, B or C.\n" 5382 "struct C {};", 5383 AlwaysBreak); 5384 } 5385 5386 TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) { 5387 verifyFormat( 5388 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5389 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5390 verifyFormat( 5391 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5392 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5393 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 5394 5395 // FIXME: Should we have the extra indent after the second break? 5396 verifyFormat( 5397 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5398 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5399 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5400 5401 verifyFormat( 5402 "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n" 5403 " cccccccccccccccccccccccccccccccccccccccccccccc());"); 5404 5405 // Breaking at nested name specifiers is generally not desirable. 5406 verifyFormat( 5407 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5408 " aaaaaaaaaaaaaaaaaaaaaaa);"); 5409 5410 verifyFormat( 5411 "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5412 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5413 " aaaaaaaaaaaaaaaaaaaaa);", 5414 getLLVMStyleWithColumns(74)); 5415 5416 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5417 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5418 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5419 } 5420 5421 TEST_F(FormatTest, UnderstandsTemplateParameters) { 5422 verifyFormat("A<int> a;"); 5423 verifyFormat("A<A<A<int>>> a;"); 5424 verifyFormat("A<A<A<int, 2>, 3>, 4> a;"); 5425 verifyFormat("bool x = a < 1 || 2 > a;"); 5426 verifyFormat("bool x = 5 < f<int>();"); 5427 verifyFormat("bool x = f<int>() > 5;"); 5428 verifyFormat("bool x = 5 < a<int>::x;"); 5429 verifyFormat("bool x = a < 4 ? a > 2 : false;"); 5430 verifyFormat("bool x = f() ? a < 2 : a > 2;"); 5431 5432 verifyGoogleFormat("A<A<int>> a;"); 5433 verifyGoogleFormat("A<A<A<int>>> a;"); 5434 verifyGoogleFormat("A<A<A<A<int>>>> a;"); 5435 verifyGoogleFormat("A<A<int> > a;"); 5436 verifyGoogleFormat("A<A<A<int> > > a;"); 5437 verifyGoogleFormat("A<A<A<A<int> > > > a;"); 5438 verifyGoogleFormat("A<::A<int>> a;"); 5439 verifyGoogleFormat("A<::A> a;"); 5440 verifyGoogleFormat("A< ::A> a;"); 5441 verifyGoogleFormat("A< ::A<int> > a;"); 5442 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle())); 5443 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle())); 5444 EXPECT_EQ("A<::A<int>> a;", format("A< ::A<int>> a;", getGoogleStyle())); 5445 EXPECT_EQ("A<::A<int>> a;", format("A<::A<int> > a;", getGoogleStyle())); 5446 EXPECT_EQ("auto x = [] { A<A<A<A>>> a; };", 5447 format("auto x=[]{A<A<A<A> >> a;};", getGoogleStyle())); 5448 5449 verifyFormat("A<A>> a;", getChromiumStyle(FormatStyle::LK_Cpp)); 5450 5451 verifyFormat("test >> a >> b;"); 5452 verifyFormat("test << a >> b;"); 5453 5454 verifyFormat("f<int>();"); 5455 verifyFormat("template <typename T> void f() {}"); 5456 verifyFormat("struct A<std::enable_if<sizeof(T2) < sizeof(int32)>::type>;"); 5457 verifyFormat("struct A<std::enable_if<sizeof(T2) ? sizeof(int32) : " 5458 "sizeof(char)>::type>;"); 5459 verifyFormat("template <class T> struct S<std::is_arithmetic<T>{}> {};"); 5460 verifyFormat("f(a.operator()<A>());"); 5461 verifyFormat("f(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5462 " .template operator()<A>());", 5463 getLLVMStyleWithColumns(35)); 5464 5465 // Not template parameters. 5466 verifyFormat("return a < b && c > d;"); 5467 verifyFormat("void f() {\n" 5468 " while (a < b && c > d) {\n" 5469 " }\n" 5470 "}"); 5471 verifyFormat("template <typename... Types>\n" 5472 "typename enable_if<0 < sizeof...(Types)>::type Foo() {}"); 5473 5474 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5475 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaa);", 5476 getLLVMStyleWithColumns(60)); 5477 verifyFormat("static_assert(is_convertible<A &&, B>::value, \"AAA\");"); 5478 verifyFormat("Constructor(A... a) : a_(X<A>{std::forward<A>(a)}...) {}"); 5479 verifyFormat("< < < < < < < < < < < < < < < < < < < < < < < < < < < < < <"); 5480 } 5481 5482 TEST_F(FormatTest, UnderstandsBinaryOperators) { 5483 verifyFormat("COMPARE(a, ==, b);"); 5484 } 5485 5486 TEST_F(FormatTest, UnderstandsPointersToMembers) { 5487 verifyFormat("int A::*x;"); 5488 verifyFormat("int (S::*func)(void *);"); 5489 verifyFormat("void f() { int (S::*func)(void *); }"); 5490 verifyFormat("typedef bool *(Class::*Member)() const;"); 5491 verifyFormat("void f() {\n" 5492 " (a->*f)();\n" 5493 " a->*x;\n" 5494 " (a.*f)();\n" 5495 " ((*a).*f)();\n" 5496 " a.*x;\n" 5497 "}"); 5498 verifyFormat("void f() {\n" 5499 " (a->*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 5500 " aaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);\n" 5501 "}"); 5502 verifyFormat( 5503 "(aaaaaaaaaa->*bbbbbbb)(\n" 5504 " aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 5505 FormatStyle Style = getLLVMStyle(); 5506 Style.PointerAlignment = FormatStyle::PAS_Left; 5507 verifyFormat("typedef bool* (Class::*Member)() const;", Style); 5508 } 5509 5510 TEST_F(FormatTest, UnderstandsUnaryOperators) { 5511 verifyFormat("int a = -2;"); 5512 verifyFormat("f(-1, -2, -3);"); 5513 verifyFormat("a[-1] = 5;"); 5514 verifyFormat("int a = 5 + -2;"); 5515 verifyFormat("if (i == -1) {\n}"); 5516 verifyFormat("if (i != -1) {\n}"); 5517 verifyFormat("if (i > -1) {\n}"); 5518 verifyFormat("if (i < -1) {\n}"); 5519 verifyFormat("++(a->f());"); 5520 verifyFormat("--(a->f());"); 5521 verifyFormat("(a->f())++;"); 5522 verifyFormat("a[42]++;"); 5523 verifyFormat("if (!(a->f())) {\n}"); 5524 5525 verifyFormat("a-- > b;"); 5526 verifyFormat("b ? -a : c;"); 5527 verifyFormat("n * sizeof char16;"); 5528 verifyFormat("n * alignof char16;", getGoogleStyle()); 5529 verifyFormat("sizeof(char);"); 5530 verifyFormat("alignof(char);", getGoogleStyle()); 5531 5532 verifyFormat("return -1;"); 5533 verifyFormat("switch (a) {\n" 5534 "case -1:\n" 5535 " break;\n" 5536 "}"); 5537 verifyFormat("#define X -1"); 5538 verifyFormat("#define X -kConstant"); 5539 5540 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {-5, +3};"); 5541 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {+5, -3};"); 5542 5543 verifyFormat("int a = /* confusing comment */ -1;"); 5544 // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case. 5545 verifyFormat("int a = i /* confusing comment */++;"); 5546 } 5547 5548 TEST_F(FormatTest, DoesNotIndentRelativeToUnaryOperators) { 5549 verifyFormat("if (!aaaaaaaaaa( // break\n" 5550 " aaaaa)) {\n" 5551 "}"); 5552 verifyFormat("aaaaaaaaaa(!aaaaaaaaaa( // break\n" 5553 " aaaaa));"); 5554 verifyFormat("*aaa = aaaaaaa( // break\n" 5555 " bbbbbb);"); 5556 } 5557 5558 TEST_F(FormatTest, UnderstandsOverloadedOperators) { 5559 verifyFormat("bool operator<();"); 5560 verifyFormat("bool operator>();"); 5561 verifyFormat("bool operator=();"); 5562 verifyFormat("bool operator==();"); 5563 verifyFormat("bool operator!=();"); 5564 verifyFormat("int operator+();"); 5565 verifyFormat("int operator++();"); 5566 verifyFormat("bool operator,();"); 5567 verifyFormat("bool operator();"); 5568 verifyFormat("bool operator()();"); 5569 verifyFormat("bool operator[]();"); 5570 verifyFormat("operator bool();"); 5571 verifyFormat("operator int();"); 5572 verifyFormat("operator void *();"); 5573 verifyFormat("operator SomeType<int>();"); 5574 verifyFormat("operator SomeType<int, int>();"); 5575 verifyFormat("operator SomeType<SomeType<int>>();"); 5576 verifyFormat("void *operator new(std::size_t size);"); 5577 verifyFormat("void *operator new[](std::size_t size);"); 5578 verifyFormat("void operator delete(void *ptr);"); 5579 verifyFormat("void operator delete[](void *ptr);"); 5580 verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n" 5581 "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);"); 5582 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa operator,(\n" 5583 " aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaaaaaaaaaaaaaaaaaaa) const;"); 5584 5585 verifyFormat( 5586 "ostream &operator<<(ostream &OutputStream,\n" 5587 " SomeReallyLongType WithSomeReallyLongValue);"); 5588 verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n" 5589 " const aaaaaaaaaaaaaaaaaaaaa &right) {\n" 5590 " return left.group < right.group;\n" 5591 "}"); 5592 verifyFormat("SomeType &operator=(const SomeType &S);"); 5593 verifyFormat("f.template operator()<int>();"); 5594 5595 verifyGoogleFormat("operator void*();"); 5596 verifyGoogleFormat("operator SomeType<SomeType<int>>();"); 5597 verifyGoogleFormat("operator ::A();"); 5598 5599 verifyFormat("using A::operator+;"); 5600 verifyFormat("inline A operator^(const A &lhs, const A &rhs) {}\n" 5601 "int i;"); 5602 } 5603 5604 TEST_F(FormatTest, UnderstandsFunctionRefQualification) { 5605 verifyFormat("Deleted &operator=(const Deleted &) & = default;"); 5606 verifyFormat("Deleted &operator=(const Deleted &) && = delete;"); 5607 verifyFormat("SomeType MemberFunction(const Deleted &) & = delete;"); 5608 verifyFormat("SomeType MemberFunction(const Deleted &) && = delete;"); 5609 verifyFormat("Deleted &operator=(const Deleted &) &;"); 5610 verifyFormat("Deleted &operator=(const Deleted &) &&;"); 5611 verifyFormat("SomeType MemberFunction(const Deleted &) &;"); 5612 verifyFormat("SomeType MemberFunction(const Deleted &) &&;"); 5613 verifyFormat("SomeType MemberFunction(const Deleted &) && {}"); 5614 verifyFormat("SomeType MemberFunction(const Deleted &) && final {}"); 5615 verifyFormat("SomeType MemberFunction(const Deleted &) && override {}"); 5616 5617 FormatStyle AlignLeft = getLLVMStyle(); 5618 AlignLeft.PointerAlignment = FormatStyle::PAS_Left; 5619 verifyFormat("Deleted& operator=(const Deleted&) & = default;", AlignLeft); 5620 verifyFormat("SomeType MemberFunction(const Deleted&) & = delete;", 5621 AlignLeft); 5622 verifyFormat("Deleted& operator=(const Deleted&) &;", AlignLeft); 5623 verifyFormat("SomeType MemberFunction(const Deleted&) &;", AlignLeft); 5624 verifyFormat("auto Function(T t) & -> void {}", AlignLeft); 5625 verifyFormat("auto Function(T... t) & -> void {}", AlignLeft); 5626 verifyFormat("auto Function(T) & -> void {}", AlignLeft); 5627 verifyFormat("auto Function(T) & -> void;", AlignLeft); 5628 5629 FormatStyle Spaces = getLLVMStyle(); 5630 Spaces.SpacesInCStyleCastParentheses = true; 5631 verifyFormat("Deleted &operator=(const Deleted &) & = default;", Spaces); 5632 verifyFormat("SomeType MemberFunction(const Deleted &) & = delete;", Spaces); 5633 verifyFormat("Deleted &operator=(const Deleted &) &;", Spaces); 5634 verifyFormat("SomeType MemberFunction(const Deleted &) &;", Spaces); 5635 5636 Spaces.SpacesInCStyleCastParentheses = false; 5637 Spaces.SpacesInParentheses = true; 5638 verifyFormat("Deleted &operator=( const Deleted & ) & = default;", Spaces); 5639 verifyFormat("SomeType MemberFunction( const Deleted & ) & = delete;", Spaces); 5640 verifyFormat("Deleted &operator=( const Deleted & ) &;", Spaces); 5641 verifyFormat("SomeType MemberFunction( const Deleted & ) &;", Spaces); 5642 } 5643 5644 TEST_F(FormatTest, UnderstandsNewAndDelete) { 5645 verifyFormat("void f() {\n" 5646 " A *a = new A;\n" 5647 " A *a = new (placement) A;\n" 5648 " delete a;\n" 5649 " delete (A *)a;\n" 5650 "}"); 5651 verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 5652 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 5653 verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5654 " new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 5655 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 5656 verifyFormat("delete[] h->p;"); 5657 } 5658 5659 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) { 5660 verifyFormat("int *f(int *a) {}"); 5661 verifyFormat("int main(int argc, char **argv) {}"); 5662 verifyFormat("Test::Test(int b) : a(b * b) {}"); 5663 verifyIndependentOfContext("f(a, *a);"); 5664 verifyFormat("void g() { f(*a); }"); 5665 verifyIndependentOfContext("int a = b * 10;"); 5666 verifyIndependentOfContext("int a = 10 * b;"); 5667 verifyIndependentOfContext("int a = b * c;"); 5668 verifyIndependentOfContext("int a += b * c;"); 5669 verifyIndependentOfContext("int a -= b * c;"); 5670 verifyIndependentOfContext("int a *= b * c;"); 5671 verifyIndependentOfContext("int a /= b * c;"); 5672 verifyIndependentOfContext("int a = *b;"); 5673 verifyIndependentOfContext("int a = *b * c;"); 5674 verifyIndependentOfContext("int a = b * *c;"); 5675 verifyIndependentOfContext("int a = b * (10);"); 5676 verifyIndependentOfContext("S << b * (10);"); 5677 verifyIndependentOfContext("return 10 * b;"); 5678 verifyIndependentOfContext("return *b * *c;"); 5679 verifyIndependentOfContext("return a & ~b;"); 5680 verifyIndependentOfContext("f(b ? *c : *d);"); 5681 verifyIndependentOfContext("int a = b ? *c : *d;"); 5682 verifyIndependentOfContext("*b = a;"); 5683 verifyIndependentOfContext("a * ~b;"); 5684 verifyIndependentOfContext("a * !b;"); 5685 verifyIndependentOfContext("a * +b;"); 5686 verifyIndependentOfContext("a * -b;"); 5687 verifyIndependentOfContext("a * ++b;"); 5688 verifyIndependentOfContext("a * --b;"); 5689 verifyIndependentOfContext("a[4] * b;"); 5690 verifyIndependentOfContext("a[a * a] = 1;"); 5691 verifyIndependentOfContext("f() * b;"); 5692 verifyIndependentOfContext("a * [self dostuff];"); 5693 verifyIndependentOfContext("int x = a * (a + b);"); 5694 verifyIndependentOfContext("(a *)(a + b);"); 5695 verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;"); 5696 verifyIndependentOfContext("int *pa = (int *)&a;"); 5697 verifyIndependentOfContext("return sizeof(int **);"); 5698 verifyIndependentOfContext("return sizeof(int ******);"); 5699 verifyIndependentOfContext("return (int **&)a;"); 5700 verifyIndependentOfContext("f((*PointerToArray)[10]);"); 5701 verifyFormat("void f(Type (*parameter)[10]) {}"); 5702 verifyFormat("void f(Type (¶meter)[10]) {}"); 5703 verifyGoogleFormat("return sizeof(int**);"); 5704 verifyIndependentOfContext("Type **A = static_cast<Type **>(P);"); 5705 verifyGoogleFormat("Type** A = static_cast<Type**>(P);"); 5706 verifyFormat("auto a = [](int **&, int ***) {};"); 5707 verifyFormat("auto PointerBinding = [](const char *S) {};"); 5708 verifyFormat("typedef typeof(int(int, int)) *MyFunc;"); 5709 verifyFormat("[](const decltype(*a) &value) {}"); 5710 verifyFormat("decltype(a * b) F();"); 5711 verifyFormat("#define MACRO() [](A *a) { return 1; }"); 5712 verifyFormat("Constructor() : member([](A *a, B *b) {}) {}"); 5713 verifyIndependentOfContext("typedef void (*f)(int *a);"); 5714 verifyIndependentOfContext("int i{a * b};"); 5715 verifyIndependentOfContext("aaa && aaa->f();"); 5716 verifyIndependentOfContext("int x = ~*p;"); 5717 verifyFormat("Constructor() : a(a), area(width * height) {}"); 5718 verifyFormat("Constructor() : a(a), area(a, width * height) {}"); 5719 verifyGoogleFormat("MACRO Constructor(const int& i) : a(a), b(b) {}"); 5720 verifyFormat("void f() { f(a, c * d); }"); 5721 verifyFormat("void f() { f(new a(), c * d); }"); 5722 5723 verifyIndependentOfContext("InvalidRegions[*R] = 0;"); 5724 5725 verifyIndependentOfContext("A<int *> a;"); 5726 verifyIndependentOfContext("A<int **> a;"); 5727 verifyIndependentOfContext("A<int *, int *> a;"); 5728 verifyIndependentOfContext("A<int *[]> a;"); 5729 verifyIndependentOfContext( 5730 "const char *const p = reinterpret_cast<const char *const>(q);"); 5731 verifyIndependentOfContext("A<int **, int **> a;"); 5732 verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);"); 5733 verifyFormat("for (char **a = b; *a; ++a) {\n}"); 5734 verifyFormat("for (; a && b;) {\n}"); 5735 verifyFormat("bool foo = true && [] { return false; }();"); 5736 5737 verifyFormat( 5738 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5739 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5740 5741 verifyGoogleFormat("**outparam = 1;"); 5742 verifyGoogleFormat("*outparam = a * b;"); 5743 verifyGoogleFormat("int main(int argc, char** argv) {}"); 5744 verifyGoogleFormat("A<int*> a;"); 5745 verifyGoogleFormat("A<int**> a;"); 5746 verifyGoogleFormat("A<int*, int*> a;"); 5747 verifyGoogleFormat("A<int**, int**> a;"); 5748 verifyGoogleFormat("f(b ? *c : *d);"); 5749 verifyGoogleFormat("int a = b ? *c : *d;"); 5750 verifyGoogleFormat("Type* t = **x;"); 5751 verifyGoogleFormat("Type* t = *++*x;"); 5752 verifyGoogleFormat("*++*x;"); 5753 verifyGoogleFormat("Type* t = const_cast<T*>(&*x);"); 5754 verifyGoogleFormat("Type* t = x++ * y;"); 5755 verifyGoogleFormat( 5756 "const char* const p = reinterpret_cast<const char* const>(q);"); 5757 verifyGoogleFormat("void f(int i = 0, SomeType** temps = NULL);"); 5758 verifyGoogleFormat("void f(Bar* a = nullptr, Bar* b);"); 5759 verifyGoogleFormat("template <typename T>\n" 5760 "void f(int i = 0, SomeType** temps = NULL);"); 5761 5762 FormatStyle Left = getLLVMStyle(); 5763 Left.PointerAlignment = FormatStyle::PAS_Left; 5764 verifyFormat("x = *a(x) = *a(y);", Left); 5765 verifyFormat("for (;; * = b) {\n}", Left); 5766 verifyFormat("return *this += 1;", Left); 5767 5768 verifyIndependentOfContext("a = *(x + y);"); 5769 verifyIndependentOfContext("a = &(x + y);"); 5770 verifyIndependentOfContext("*(x + y).call();"); 5771 verifyIndependentOfContext("&(x + y)->call();"); 5772 verifyFormat("void f() { &(*I).first; }"); 5773 5774 verifyIndependentOfContext("f(b * /* confusing comment */ ++c);"); 5775 verifyFormat( 5776 "int *MyValues = {\n" 5777 " *A, // Operator detection might be confused by the '{'\n" 5778 " *BB // Operator detection might be confused by previous comment\n" 5779 "};"); 5780 5781 verifyIndependentOfContext("if (int *a = &b)"); 5782 verifyIndependentOfContext("if (int &a = *b)"); 5783 verifyIndependentOfContext("if (a & b[i])"); 5784 verifyIndependentOfContext("if (a::b::c::d & b[i])"); 5785 verifyIndependentOfContext("if (*b[i])"); 5786 verifyIndependentOfContext("if (int *a = (&b))"); 5787 verifyIndependentOfContext("while (int *a = &b)"); 5788 verifyIndependentOfContext("size = sizeof *a;"); 5789 verifyIndependentOfContext("if (a && (b = c))"); 5790 verifyFormat("void f() {\n" 5791 " for (const int &v : Values) {\n" 5792 " }\n" 5793 "}"); 5794 verifyFormat("for (int i = a * a; i < 10; ++i) {\n}"); 5795 verifyFormat("for (int i = 0; i < a * a; ++i) {\n}"); 5796 verifyGoogleFormat("for (int i = 0; i * 2 < z; i *= 2) {\n}"); 5797 5798 verifyFormat("#define A (!a * b)"); 5799 verifyFormat("#define MACRO \\\n" 5800 " int *i = a * b; \\\n" 5801 " void f(a *b);", 5802 getLLVMStyleWithColumns(19)); 5803 5804 verifyIndependentOfContext("A = new SomeType *[Length];"); 5805 verifyIndependentOfContext("A = new SomeType *[Length]();"); 5806 verifyIndependentOfContext("T **t = new T *;"); 5807 verifyIndependentOfContext("T **t = new T *();"); 5808 verifyGoogleFormat("A = new SomeType*[Length]();"); 5809 verifyGoogleFormat("A = new SomeType*[Length];"); 5810 verifyGoogleFormat("T** t = new T*;"); 5811 verifyGoogleFormat("T** t = new T*();"); 5812 5813 FormatStyle PointerLeft = getLLVMStyle(); 5814 PointerLeft.PointerAlignment = FormatStyle::PAS_Left; 5815 verifyFormat("delete *x;", PointerLeft); 5816 verifyFormat("STATIC_ASSERT((a & b) == 0);"); 5817 verifyFormat("STATIC_ASSERT(0 == (a & b));"); 5818 verifyFormat("template <bool a, bool b> " 5819 "typename t::if<x && y>::type f() {}"); 5820 verifyFormat("template <int *y> f() {}"); 5821 verifyFormat("vector<int *> v;"); 5822 verifyFormat("vector<int *const> v;"); 5823 verifyFormat("vector<int *const **const *> v;"); 5824 verifyFormat("vector<int *volatile> v;"); 5825 verifyFormat("vector<a * b> v;"); 5826 verifyFormat("foo<b && false>();"); 5827 verifyFormat("foo<b & 1>();"); 5828 verifyFormat("decltype(*::std::declval<const T &>()) void F();"); 5829 verifyFormat( 5830 "template <class T, class = typename std::enable_if<\n" 5831 " std::is_integral<T>::value &&\n" 5832 " (sizeof(T) > 1 || sizeof(T) < 8)>::type>\n" 5833 "void F();", 5834 getLLVMStyleWithColumns(76)); 5835 verifyFormat( 5836 "template <class T,\n" 5837 " class = typename ::std::enable_if<\n" 5838 " ::std::is_array<T>{} && ::std::is_array<T>{}>::type>\n" 5839 "void F();", 5840 getGoogleStyleWithColumns(68)); 5841 5842 verifyIndependentOfContext("MACRO(int *i);"); 5843 verifyIndependentOfContext("MACRO(auto *a);"); 5844 verifyIndependentOfContext("MACRO(const A *a);"); 5845 verifyIndependentOfContext("MACRO('0' <= c && c <= '9');"); 5846 // FIXME: Is there a way to make this work? 5847 // verifyIndependentOfContext("MACRO(A *a);"); 5848 5849 verifyFormat("DatumHandle const *operator->() const { return input_; }"); 5850 verifyFormat("return options != nullptr && operator==(*options);"); 5851 5852 EXPECT_EQ("#define OP(x) \\\n" 5853 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5854 " return s << a.DebugString(); \\\n" 5855 " }", 5856 format("#define OP(x) \\\n" 5857 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5858 " return s << a.DebugString(); \\\n" 5859 " }", 5860 getLLVMStyleWithColumns(50))); 5861 5862 // FIXME: We cannot handle this case yet; we might be able to figure out that 5863 // foo<x> d > v; doesn't make sense. 5864 verifyFormat("foo<a<b && c> d> v;"); 5865 5866 FormatStyle PointerMiddle = getLLVMStyle(); 5867 PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle; 5868 verifyFormat("delete *x;", PointerMiddle); 5869 verifyFormat("int * x;", PointerMiddle); 5870 verifyFormat("template <int * y> f() {}", PointerMiddle); 5871 verifyFormat("int * f(int * a) {}", PointerMiddle); 5872 verifyFormat("int main(int argc, char ** argv) {}", PointerMiddle); 5873 verifyFormat("Test::Test(int b) : a(b * b) {}", PointerMiddle); 5874 verifyFormat("A<int *> a;", PointerMiddle); 5875 verifyFormat("A<int **> a;", PointerMiddle); 5876 verifyFormat("A<int *, int *> a;", PointerMiddle); 5877 verifyFormat("A<int * []> a;", PointerMiddle); 5878 verifyFormat("A = new SomeType *[Length]();", PointerMiddle); 5879 verifyFormat("A = new SomeType *[Length];", PointerMiddle); 5880 verifyFormat("T ** t = new T *;", PointerMiddle); 5881 5882 // Member function reference qualifiers aren't binary operators. 5883 verifyFormat("string // break\n" 5884 "operator()() & {}"); 5885 verifyFormat("string // break\n" 5886 "operator()() && {}"); 5887 verifyGoogleFormat("template <typename T>\n" 5888 "auto x() & -> int {}"); 5889 } 5890 5891 TEST_F(FormatTest, UnderstandsAttributes) { 5892 verifyFormat("SomeType s __attribute__((unused)) (InitValue);"); 5893 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((unused))\n" 5894 "aaaaaaaaaaaaaaaaaaaaaaa(int i);"); 5895 FormatStyle AfterType = getLLVMStyle(); 5896 AfterType.AlwaysBreakAfterReturnType = FormatStyle::RTBS_AllDefinitions; 5897 verifyFormat("__attribute__((nodebug)) void\n" 5898 "foo() {}\n", 5899 AfterType); 5900 } 5901 5902 TEST_F(FormatTest, UnderstandsEllipsis) { 5903 verifyFormat("int printf(const char *fmt, ...);"); 5904 verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }"); 5905 verifyFormat("template <class... Ts> void Foo(Ts *... ts) {}"); 5906 5907 FormatStyle PointersLeft = getLLVMStyle(); 5908 PointersLeft.PointerAlignment = FormatStyle::PAS_Left; 5909 verifyFormat("template <class... Ts> void Foo(Ts*... ts) {}", PointersLeft); 5910 } 5911 5912 TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) { 5913 EXPECT_EQ("int *a;\n" 5914 "int *a;\n" 5915 "int *a;", 5916 format("int *a;\n" 5917 "int* a;\n" 5918 "int *a;", 5919 getGoogleStyle())); 5920 EXPECT_EQ("int* a;\n" 5921 "int* a;\n" 5922 "int* a;", 5923 format("int* a;\n" 5924 "int* a;\n" 5925 "int *a;", 5926 getGoogleStyle())); 5927 EXPECT_EQ("int *a;\n" 5928 "int *a;\n" 5929 "int *a;", 5930 format("int *a;\n" 5931 "int * a;\n" 5932 "int * a;", 5933 getGoogleStyle())); 5934 EXPECT_EQ("auto x = [] {\n" 5935 " int *a;\n" 5936 " int *a;\n" 5937 " int *a;\n" 5938 "};", 5939 format("auto x=[]{int *a;\n" 5940 "int * a;\n" 5941 "int * a;};", 5942 getGoogleStyle())); 5943 } 5944 5945 TEST_F(FormatTest, UnderstandsRvalueReferences) { 5946 verifyFormat("int f(int &&a) {}"); 5947 verifyFormat("int f(int a, char &&b) {}"); 5948 verifyFormat("void f() { int &&a = b; }"); 5949 verifyGoogleFormat("int f(int a, char&& b) {}"); 5950 verifyGoogleFormat("void f() { int&& a = b; }"); 5951 5952 verifyIndependentOfContext("A<int &&> a;"); 5953 verifyIndependentOfContext("A<int &&, int &&> a;"); 5954 verifyGoogleFormat("A<int&&> a;"); 5955 verifyGoogleFormat("A<int&&, int&&> a;"); 5956 5957 // Not rvalue references: 5958 verifyFormat("template <bool B, bool C> class A {\n" 5959 " static_assert(B && C, \"Something is wrong\");\n" 5960 "};"); 5961 verifyGoogleFormat("#define IF(a, b, c) if (a && (b == c))"); 5962 verifyGoogleFormat("#define WHILE(a, b, c) while (a && (b == c))"); 5963 verifyFormat("#define A(a, b) (a && b)"); 5964 } 5965 5966 TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) { 5967 verifyFormat("void f() {\n" 5968 " x[aaaaaaaaa -\n" 5969 " b] = 23;\n" 5970 "}", 5971 getLLVMStyleWithColumns(15)); 5972 } 5973 5974 TEST_F(FormatTest, FormatsCasts) { 5975 verifyFormat("Type *A = static_cast<Type *>(P);"); 5976 verifyFormat("Type *A = (Type *)P;"); 5977 verifyFormat("Type *A = (vector<Type *, int *>)P;"); 5978 verifyFormat("int a = (int)(2.0f);"); 5979 verifyFormat("int a = (int)2.0f;"); 5980 verifyFormat("x[(int32)y];"); 5981 verifyFormat("x = (int32)y;"); 5982 verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)"); 5983 verifyFormat("int a = (int)*b;"); 5984 verifyFormat("int a = (int)2.0f;"); 5985 verifyFormat("int a = (int)~0;"); 5986 verifyFormat("int a = (int)++a;"); 5987 verifyFormat("int a = (int)sizeof(int);"); 5988 verifyFormat("int a = (int)+2;"); 5989 verifyFormat("my_int a = (my_int)2.0f;"); 5990 verifyFormat("my_int a = (my_int)sizeof(int);"); 5991 verifyFormat("return (my_int)aaa;"); 5992 verifyFormat("#define x ((int)-1)"); 5993 verifyFormat("#define LENGTH(x, y) (x) - (y) + 1"); 5994 verifyFormat("#define p(q) ((int *)&q)"); 5995 verifyFormat("fn(a)(b) + 1;"); 5996 5997 verifyFormat("void f() { my_int a = (my_int)*b; }"); 5998 verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }"); 5999 verifyFormat("my_int a = (my_int)~0;"); 6000 verifyFormat("my_int a = (my_int)++a;"); 6001 verifyFormat("my_int a = (my_int)-2;"); 6002 verifyFormat("my_int a = (my_int)1;"); 6003 verifyFormat("my_int a = (my_int *)1;"); 6004 verifyFormat("my_int a = (const my_int)-1;"); 6005 verifyFormat("my_int a = (const my_int *)-1;"); 6006 verifyFormat("my_int a = (my_int)(my_int)-1;"); 6007 verifyFormat("my_int a = (ns::my_int)-2;"); 6008 verifyFormat("case (my_int)ONE:"); 6009 verifyFormat("auto x = (X)this;"); 6010 6011 // FIXME: single value wrapped with paren will be treated as cast. 6012 verifyFormat("void f(int i = (kValue)*kMask) {}"); 6013 6014 verifyFormat("{ (void)F; }"); 6015 6016 // Don't break after a cast's 6017 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 6018 " (aaaaaaaaaaaaaaaaaaaaaaaaaa *)(aaaaaaaaaaaaaaaaaaaaaa +\n" 6019 " bbbbbbbbbbbbbbbbbbbbbb);"); 6020 6021 // These are not casts. 6022 verifyFormat("void f(int *) {}"); 6023 verifyFormat("f(foo)->b;"); 6024 verifyFormat("f(foo).b;"); 6025 verifyFormat("f(foo)(b);"); 6026 verifyFormat("f(foo)[b];"); 6027 verifyFormat("[](foo) { return 4; }(bar);"); 6028 verifyFormat("(*funptr)(foo)[4];"); 6029 verifyFormat("funptrs[4](foo)[4];"); 6030 verifyFormat("void f(int *);"); 6031 verifyFormat("void f(int *) = 0;"); 6032 verifyFormat("void f(SmallVector<int>) {}"); 6033 verifyFormat("void f(SmallVector<int>);"); 6034 verifyFormat("void f(SmallVector<int>) = 0;"); 6035 verifyFormat("void f(int i = (kA * kB) & kMask) {}"); 6036 verifyFormat("int a = sizeof(int) * b;"); 6037 verifyFormat("int a = alignof(int) * b;", getGoogleStyle()); 6038 verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;"); 6039 verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");"); 6040 verifyFormat("aaaaa &operator=(const aaaaa &) LLVM_DELETED_FUNCTION;"); 6041 6042 // These are not casts, but at some point were confused with casts. 6043 verifyFormat("virtual void foo(int *) override;"); 6044 verifyFormat("virtual void foo(char &) const;"); 6045 verifyFormat("virtual void foo(int *a, char *) const;"); 6046 verifyFormat("int a = sizeof(int *) + b;"); 6047 verifyFormat("int a = alignof(int *) + b;", getGoogleStyle()); 6048 verifyFormat("bool b = f(g<int>) && c;"); 6049 verifyFormat("typedef void (*f)(int i) func;"); 6050 6051 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n" 6052 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 6053 // FIXME: The indentation here is not ideal. 6054 verifyFormat( 6055 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 6056 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)\n" 6057 " [dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];"); 6058 } 6059 6060 TEST_F(FormatTest, FormatsFunctionTypes) { 6061 verifyFormat("A<bool()> a;"); 6062 verifyFormat("A<SomeType()> a;"); 6063 verifyFormat("A<void (*)(int, std::string)> a;"); 6064 verifyFormat("A<void *(int)>;"); 6065 verifyFormat("void *(*a)(int *, SomeType *);"); 6066 verifyFormat("int (*func)(void *);"); 6067 verifyFormat("void f() { int (*func)(void *); }"); 6068 verifyFormat("template <class CallbackClass>\n" 6069 "using MyCallback = void (CallbackClass::*)(SomeObject *Data);"); 6070 6071 verifyGoogleFormat("A<void*(int*, SomeType*)>;"); 6072 verifyGoogleFormat("void* (*a)(int);"); 6073 verifyGoogleFormat( 6074 "template <class CallbackClass>\n" 6075 "using MyCallback = void (CallbackClass::*)(SomeObject* Data);"); 6076 6077 // Other constructs can look somewhat like function types: 6078 verifyFormat("A<sizeof(*x)> a;"); 6079 verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)"); 6080 verifyFormat("some_var = function(*some_pointer_var)[0];"); 6081 verifyFormat("void f() { function(*some_pointer_var)[0] = 10; }"); 6082 verifyFormat("int x = f(&h)();"); 6083 } 6084 6085 TEST_F(FormatTest, FormatsPointersToArrayTypes) { 6086 verifyFormat("A (*foo_)[6];"); 6087 verifyFormat("vector<int> (*foo_)[6];"); 6088 } 6089 6090 TEST_F(FormatTest, BreaksLongVariableDeclarations) { 6091 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 6092 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 6093 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType const\n" 6094 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 6095 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 6096 " *LoooooooooooooooooooooooooooooooooooooooongVariable;"); 6097 6098 // Different ways of ()-initializiation. 6099 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 6100 " LoooooooooooooooooooooooooooooooooooooooongVariable(1);"); 6101 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 6102 " LoooooooooooooooooooooooooooooooooooooooongVariable(a);"); 6103 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 6104 " LoooooooooooooooooooooooooooooooooooooooongVariable({});"); 6105 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 6106 " LoooooooooooooooooooooooooooooooooooooongVariable([A a]);"); 6107 } 6108 6109 TEST_F(FormatTest, BreaksLongDeclarations) { 6110 verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n" 6111 " AnotherNameForTheLongType;"); 6112 verifyFormat("typedef LongTemplateType<aaaaaaaaaaaaaaaaaaa()>\n" 6113 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 6114 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 6115 "LoooooooooooooooooooooooooooooooongFunctionDeclaration();"); 6116 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType *\n" 6117 "LoooooooooooooooooooooooooooooooongFunctionDeclaration();"); 6118 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 6119 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 6120 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType MACRO\n" 6121 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 6122 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 6123 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 6124 verifyFormat("decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 6125 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 6126 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 6127 "LooooooooooooooooooooooooooongFunctionDeclaration(T... t);"); 6128 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 6129 "LooooooooooooooooooooooooooongFunctionDeclaration(T /*t*/) {}"); 6130 FormatStyle Indented = getLLVMStyle(); 6131 Indented.IndentWrappedFunctionNames = true; 6132 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 6133 " LoooooooooooooooooooooooooooooooongFunctionDeclaration();", 6134 Indented); 6135 verifyFormat( 6136 "LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 6137 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 6138 Indented); 6139 verifyFormat( 6140 "LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 6141 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 6142 Indented); 6143 verifyFormat( 6144 "decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 6145 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 6146 Indented); 6147 6148 // FIXME: Without the comment, this breaks after "(". 6149 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType // break\n" 6150 " (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();", 6151 getGoogleStyle()); 6152 6153 verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n" 6154 " int LoooooooooooooooooooongParam2) {}"); 6155 verifyFormat( 6156 "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n" 6157 " SourceLocation L, IdentifierIn *II,\n" 6158 " Type *T) {}"); 6159 verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n" 6160 "ReallyReaaallyLongFunctionName(\n" 6161 " const std::string &SomeParameter,\n" 6162 " const SomeType<string, SomeOtherTemplateParameter>\n" 6163 " &ReallyReallyLongParameterName,\n" 6164 " const SomeType<string, SomeOtherTemplateParameter>\n" 6165 " &AnotherLongParameterName) {}"); 6166 verifyFormat("template <typename A>\n" 6167 "SomeLoooooooooooooooooooooongType<\n" 6168 " typename some_namespace::SomeOtherType<A>::Type>\n" 6169 "Function() {}"); 6170 6171 verifyGoogleFormat( 6172 "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n" 6173 " aaaaaaaaaaaaaaaaaaaaaaa;"); 6174 verifyGoogleFormat( 6175 "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n" 6176 " SourceLocation L) {}"); 6177 verifyGoogleFormat( 6178 "some_namespace::LongReturnType\n" 6179 "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n" 6180 " int first_long_parameter, int second_parameter) {}"); 6181 6182 verifyGoogleFormat("template <typename T>\n" 6183 "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n" 6184 "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}"); 6185 verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6186 " int aaaaaaaaaaaaaaaaaaaaaaa);"); 6187 6188 verifyFormat("typedef size_t (*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 6189 " const aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 6190 " *aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 6191 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 6192 " vector<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n" 6193 " aaaaaaaaaaaaaaaaaaaaaaaa);"); 6194 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 6195 " vector<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 6196 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>>\n" 6197 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 6198 } 6199 6200 TEST_F(FormatTest, FormatsArrays) { 6201 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 6202 " [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;"); 6203 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa(aaaaaaaaaaaa)]\n" 6204 " [bbbbbbbbbbb(bbbbbbbbbbbb)] = c;"); 6205 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaa &&\n" 6206 " aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaa][aaaaaaaaaaaaa]) {\n}"); 6207 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 6208 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 6209 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 6210 " [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;"); 6211 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 6212 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 6213 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 6214 verifyFormat( 6215 "llvm::outs() << \"aaaaaaaaaaaa: \"\n" 6216 " << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 6217 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];"); 6218 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaa][a]\n" 6219 " .aaaaaaaaaaaaaaaaaaaaaa();"); 6220 6221 verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n" 6222 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];"); 6223 verifyFormat( 6224 "aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n" 6225 " .aaaaaaa[0]\n" 6226 " .aaaaaaaaaaaaaaaaaaaaaa();"); 6227 verifyFormat("a[::b::c];"); 6228 6229 verifyNoCrash("a[,Y?)]", getLLVMStyleWithColumns(10)); 6230 6231 FormatStyle NoColumnLimit = getLLVMStyleWithColumns(0); 6232 verifyFormat("aaaaa[bbbbbb].cccccc()", NoColumnLimit); 6233 } 6234 6235 TEST_F(FormatTest, LineStartsWithSpecialCharacter) { 6236 verifyFormat("(a)->b();"); 6237 verifyFormat("--a;"); 6238 } 6239 6240 TEST_F(FormatTest, HandlesIncludeDirectives) { 6241 verifyFormat("#include <string>\n" 6242 "#include <a/b/c.h>\n" 6243 "#include \"a/b/string\"\n" 6244 "#include \"string.h\"\n" 6245 "#include \"string.h\"\n" 6246 "#include <a-a>\n" 6247 "#include < path with space >\n" 6248 "#include_next <test.h>" 6249 "#include \"abc.h\" // this is included for ABC\n" 6250 "#include \"some long include\" // with a comment\n" 6251 "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"", 6252 getLLVMStyleWithColumns(35)); 6253 EXPECT_EQ("#include \"a.h\"", format("#include \"a.h\"")); 6254 EXPECT_EQ("#include <a>", format("#include<a>")); 6255 6256 verifyFormat("#import <string>"); 6257 verifyFormat("#import <a/b/c.h>"); 6258 verifyFormat("#import \"a/b/string\""); 6259 verifyFormat("#import \"string.h\""); 6260 verifyFormat("#import \"string.h\""); 6261 verifyFormat("#if __has_include(<strstream>)\n" 6262 "#include <strstream>\n" 6263 "#endif"); 6264 6265 verifyFormat("#define MY_IMPORT <a/b>"); 6266 6267 // Protocol buffer definition or missing "#". 6268 verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";", 6269 getLLVMStyleWithColumns(30)); 6270 6271 FormatStyle Style = getLLVMStyle(); 6272 Style.AlwaysBreakBeforeMultilineStrings = true; 6273 Style.ColumnLimit = 0; 6274 verifyFormat("#import \"abc.h\"", Style); 6275 6276 // But 'import' might also be a regular C++ namespace. 6277 verifyFormat("import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6278 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 6279 } 6280 6281 //===----------------------------------------------------------------------===// 6282 // Error recovery tests. 6283 //===----------------------------------------------------------------------===// 6284 6285 TEST_F(FormatTest, IncompleteParameterLists) { 6286 FormatStyle NoBinPacking = getLLVMStyle(); 6287 NoBinPacking.BinPackParameters = false; 6288 verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n" 6289 " double *min_x,\n" 6290 " double *max_x,\n" 6291 " double *min_y,\n" 6292 " double *max_y,\n" 6293 " double *min_z,\n" 6294 " double *max_z, ) {}", 6295 NoBinPacking); 6296 } 6297 6298 TEST_F(FormatTest, IncorrectCodeTrailingStuff) { 6299 verifyFormat("void f() { return; }\n42"); 6300 verifyFormat("void f() {\n" 6301 " if (0)\n" 6302 " return;\n" 6303 "}\n" 6304 "42"); 6305 verifyFormat("void f() { return }\n42"); 6306 verifyFormat("void f() {\n" 6307 " if (0)\n" 6308 " return\n" 6309 "}\n" 6310 "42"); 6311 } 6312 6313 TEST_F(FormatTest, IncorrectCodeMissingSemicolon) { 6314 EXPECT_EQ("void f() { return }", format("void f ( ) { return }")); 6315 EXPECT_EQ("void f() {\n" 6316 " if (a)\n" 6317 " return\n" 6318 "}", 6319 format("void f ( ) { if ( a ) return }")); 6320 EXPECT_EQ("namespace N {\n" 6321 "void f()\n" 6322 "}", 6323 format("namespace N { void f() }")); 6324 EXPECT_EQ("namespace N {\n" 6325 "void f() {}\n" 6326 "void g()\n" 6327 "}", 6328 format("namespace N { void f( ) { } void g( ) }")); 6329 } 6330 6331 TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) { 6332 verifyFormat("int aaaaaaaa =\n" 6333 " // Overlylongcomment\n" 6334 " b;", 6335 getLLVMStyleWithColumns(20)); 6336 verifyFormat("function(\n" 6337 " ShortArgument,\n" 6338 " LoooooooooooongArgument);\n", 6339 getLLVMStyleWithColumns(20)); 6340 } 6341 6342 TEST_F(FormatTest, IncorrectAccessSpecifier) { 6343 verifyFormat("public:"); 6344 verifyFormat("class A {\n" 6345 "public\n" 6346 " void f() {}\n" 6347 "};"); 6348 verifyFormat("public\n" 6349 "int qwerty;"); 6350 verifyFormat("public\n" 6351 "B {}"); 6352 verifyFormat("public\n" 6353 "{}"); 6354 verifyFormat("public\n" 6355 "B { int x; }"); 6356 } 6357 6358 TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) { 6359 verifyFormat("{"); 6360 verifyFormat("#})"); 6361 verifyNoCrash("(/**/[:!] ?[)."); 6362 } 6363 6364 TEST_F(FormatTest, IncorrectCodeDoNoWhile) { 6365 verifyFormat("do {\n}"); 6366 verifyFormat("do {\n}\n" 6367 "f();"); 6368 verifyFormat("do {\n}\n" 6369 "wheeee(fun);"); 6370 verifyFormat("do {\n" 6371 " f();\n" 6372 "}"); 6373 } 6374 6375 TEST_F(FormatTest, IncorrectCodeMissingParens) { 6376 verifyFormat("if {\n foo;\n foo();\n}"); 6377 verifyFormat("switch {\n foo;\n foo();\n}"); 6378 verifyIncompleteFormat("for {\n foo;\n foo();\n}"); 6379 verifyFormat("while {\n foo;\n foo();\n}"); 6380 verifyFormat("do {\n foo;\n foo();\n} while;"); 6381 } 6382 6383 TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) { 6384 verifyIncompleteFormat("namespace {\n" 6385 "class Foo { Foo (\n" 6386 "};\n" 6387 "} // comment"); 6388 } 6389 6390 TEST_F(FormatTest, IncorrectCodeErrorDetection) { 6391 EXPECT_EQ("{\n {}\n", format("{\n{\n}\n")); 6392 EXPECT_EQ("{\n {}\n", format("{\n {\n}\n")); 6393 EXPECT_EQ("{\n {}\n", format("{\n {\n }\n")); 6394 EXPECT_EQ("{\n {}\n}\n}\n", format("{\n {\n }\n }\n}\n")); 6395 6396 EXPECT_EQ("{\n" 6397 " {\n" 6398 " breakme(\n" 6399 " qwe);\n" 6400 " }\n", 6401 format("{\n" 6402 " {\n" 6403 " breakme(qwe);\n" 6404 "}\n", 6405 getLLVMStyleWithColumns(10))); 6406 } 6407 6408 TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) { 6409 verifyFormat("int x = {\n" 6410 " avariable,\n" 6411 " b(alongervariable)};", 6412 getLLVMStyleWithColumns(25)); 6413 } 6414 6415 TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) { 6416 verifyFormat("return (a)(b){1, 2, 3};"); 6417 } 6418 6419 TEST_F(FormatTest, LayoutCxx11BraceInitializers) { 6420 verifyFormat("vector<int> x{1, 2, 3, 4};"); 6421 verifyFormat("vector<int> x{\n" 6422 " 1, 2, 3, 4,\n" 6423 "};"); 6424 verifyFormat("vector<T> x{{}, {}, {}, {}};"); 6425 verifyFormat("f({1, 2});"); 6426 verifyFormat("auto v = Foo{-1};"); 6427 verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});"); 6428 verifyFormat("Class::Class : member{1, 2, 3} {}"); 6429 verifyFormat("new vector<int>{1, 2, 3};"); 6430 verifyFormat("new int[3]{1, 2, 3};"); 6431 verifyFormat("new int{1};"); 6432 verifyFormat("return {arg1, arg2};"); 6433 verifyFormat("return {arg1, SomeType{parameter}};"); 6434 verifyFormat("int count = set<int>{f(), g(), h()}.size();"); 6435 verifyFormat("new T{arg1, arg2};"); 6436 verifyFormat("f(MyMap[{composite, key}]);"); 6437 verifyFormat("class Class {\n" 6438 " T member = {arg1, arg2};\n" 6439 "};"); 6440 verifyFormat("vector<int> foo = {::SomeGlobalFunction()};"); 6441 verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");"); 6442 verifyFormat("int a = std::is_integral<int>{} + 0;"); 6443 6444 verifyFormat("int foo(int i) { return fo1{}(i); }"); 6445 verifyFormat("int foo(int i) { return fo1{}(i); }"); 6446 verifyFormat("auto i = decltype(x){};"); 6447 verifyFormat("std::vector<int> v = {1, 0 /* comment */};"); 6448 verifyFormat("Node n{1, Node{1000}, //\n" 6449 " 2};"); 6450 verifyFormat("Aaaa aaaaaaa{\n" 6451 " {\n" 6452 " aaaa,\n" 6453 " },\n" 6454 "};"); 6455 verifyFormat("class C : public D {\n" 6456 " SomeClass SC{2};\n" 6457 "};"); 6458 verifyFormat("class C : public A {\n" 6459 " class D : public B {\n" 6460 " void f() { int i{2}; }\n" 6461 " };\n" 6462 "};"); 6463 verifyFormat("#define A {a, a},"); 6464 6465 // In combination with BinPackArguments = false. 6466 FormatStyle NoBinPacking = getLLVMStyle(); 6467 NoBinPacking.BinPackArguments = false; 6468 verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n" 6469 " bbbbb,\n" 6470 " ccccc,\n" 6471 " ddddd,\n" 6472 " eeeee,\n" 6473 " ffffff,\n" 6474 " ggggg,\n" 6475 " hhhhhh,\n" 6476 " iiiiii,\n" 6477 " jjjjjj,\n" 6478 " kkkkkk};", 6479 NoBinPacking); 6480 verifyFormat("const Aaaaaa aaaaa = {\n" 6481 " aaaaa,\n" 6482 " bbbbb,\n" 6483 " ccccc,\n" 6484 " ddddd,\n" 6485 " eeeee,\n" 6486 " ffffff,\n" 6487 " ggggg,\n" 6488 " hhhhhh,\n" 6489 " iiiiii,\n" 6490 " jjjjjj,\n" 6491 " kkkkkk,\n" 6492 "};", 6493 NoBinPacking); 6494 verifyFormat( 6495 "const Aaaaaa aaaaa = {\n" 6496 " aaaaa, bbbbb, ccccc, ddddd, eeeee, ffffff, ggggg, hhhhhh,\n" 6497 " iiiiii, jjjjjj, kkkkkk, aaaaa, bbbbb, ccccc, ddddd, eeeee,\n" 6498 " ffffff, ggggg, hhhhhh, iiiiii, jjjjjj, kkkkkk,\n" 6499 "};", 6500 NoBinPacking); 6501 6502 // FIXME: The alignment of these trailing comments might be bad. Then again, 6503 // this might be utterly useless in real code. 6504 verifyFormat("Constructor::Constructor()\n" 6505 " : some_value{ //\n" 6506 " aaaaaaa, //\n" 6507 " bbbbbbb} {}"); 6508 6509 // In braced lists, the first comment is always assumed to belong to the 6510 // first element. Thus, it can be moved to the next or previous line as 6511 // appropriate. 6512 EXPECT_EQ("function({// First element:\n" 6513 " 1,\n" 6514 " // Second element:\n" 6515 " 2});", 6516 format("function({\n" 6517 " // First element:\n" 6518 " 1,\n" 6519 " // Second element:\n" 6520 " 2});")); 6521 EXPECT_EQ("std::vector<int> MyNumbers{\n" 6522 " // First element:\n" 6523 " 1,\n" 6524 " // Second element:\n" 6525 " 2};", 6526 format("std::vector<int> MyNumbers{// First element:\n" 6527 " 1,\n" 6528 " // Second element:\n" 6529 " 2};", 6530 getLLVMStyleWithColumns(30))); 6531 // A trailing comma should still lead to an enforced line break. 6532 EXPECT_EQ("vector<int> SomeVector = {\n" 6533 " // aaa\n" 6534 " 1, 2,\n" 6535 "};", 6536 format("vector<int> SomeVector = { // aaa\n" 6537 " 1, 2, };")); 6538 6539 FormatStyle ExtraSpaces = getLLVMStyle(); 6540 ExtraSpaces.Cpp11BracedListStyle = false; 6541 ExtraSpaces.ColumnLimit = 75; 6542 verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces); 6543 verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces); 6544 verifyFormat("f({ 1, 2 });", ExtraSpaces); 6545 verifyFormat("auto v = Foo{ 1 };", ExtraSpaces); 6546 verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces); 6547 verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces); 6548 verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces); 6549 verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces); 6550 verifyFormat("return { arg1, arg2 };", ExtraSpaces); 6551 verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces); 6552 verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces); 6553 verifyFormat("new T{ arg1, arg2 };", ExtraSpaces); 6554 verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces); 6555 verifyFormat("class Class {\n" 6556 " T member = { arg1, arg2 };\n" 6557 "};", 6558 ExtraSpaces); 6559 verifyFormat( 6560 "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6561 " aaaaaaaaaaaaaaaaaaaa, aaaaa }\n" 6562 " : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 6563 " bbbbbbbbbbbbbbbbbbbb, bbbbb };", 6564 ExtraSpaces); 6565 verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces); 6566 verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });", 6567 ExtraSpaces); 6568 verifyFormat( 6569 "someFunction(OtherParam,\n" 6570 " BracedList{ // comment 1 (Forcing interesting break)\n" 6571 " param1, param2,\n" 6572 " // comment 2\n" 6573 " param3, param4 });", 6574 ExtraSpaces); 6575 verifyFormat( 6576 "std::this_thread::sleep_for(\n" 6577 " std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);", 6578 ExtraSpaces); 6579 verifyFormat("std::vector<MyValues> aaaaaaaaaaaaaaaaaaa{\n" 6580 " aaaaaaa,\n" 6581 " aaaaaaaaaa,\n" 6582 " aaaaa,\n" 6583 " aaaaaaaaaaaaaaa,\n" 6584 " aaa,\n" 6585 " aaaaaaaaaa,\n" 6586 " a,\n" 6587 " aaaaaaaaaaaaaaaaaaaaa,\n" 6588 " aaaaaaaaaaaa,\n" 6589 " aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa,\n" 6590 " aaaaaaa,\n" 6591 " a};"); 6592 verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces); 6593 } 6594 6595 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) { 6596 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6597 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6598 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6599 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6600 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6601 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 6602 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777, //\n" 6603 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6604 " 1, 22, 333, 4444, 55555, //\n" 6605 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6606 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 6607 verifyFormat( 6608 "vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6609 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6610 " 1, 22, 333, 4444, 55555, 666666, // comment\n" 6611 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6612 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6613 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6614 " 7777777};"); 6615 verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n" 6616 " X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n" 6617 " X86::R8, X86::R9, X86::R10, X86::R11, 0};"); 6618 verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n" 6619 " X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n" 6620 " // Separating comment.\n" 6621 " X86::R8, X86::R9, X86::R10, X86::R11, 0};"); 6622 verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n" 6623 " // Leading comment\n" 6624 " X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n" 6625 " X86::R8, X86::R9, X86::R10, X86::R11, 0};"); 6626 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6627 " 1, 1, 1, 1};", 6628 getLLVMStyleWithColumns(39)); 6629 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6630 " 1, 1, 1, 1};", 6631 getLLVMStyleWithColumns(38)); 6632 verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n" 6633 " 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};", 6634 getLLVMStyleWithColumns(43)); 6635 verifyFormat( 6636 "static unsigned SomeValues[10][3] = {\n" 6637 " {1, 4, 0}, {4, 9, 0}, {4, 5, 9}, {8, 5, 4}, {1, 8, 4},\n" 6638 " {10, 1, 6}, {11, 0, 9}, {2, 11, 9}, {5, 2, 9}, {11, 2, 7}};"); 6639 verifyFormat("static auto fields = new vector<string>{\n" 6640 " \"aaaaaaaaaaaaa\",\n" 6641 " \"aaaaaaaaaaaaa\",\n" 6642 " \"aaaaaaaaaaaa\",\n" 6643 " \"aaaaaaaaaaaaaa\",\n" 6644 " \"aaaaaaaaaaaaaaaaaaaaaaaaa\",\n" 6645 " \"aaaaaaaaaaaa\",\n" 6646 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\",\n" 6647 "};"); 6648 verifyFormat("vector<int> x = {1, 2, 3, 4, aaaaaaaaaaaaaaaaa, 6};"); 6649 verifyFormat("vector<int> x = {1, aaaaaaaaaaaaaaaaaaaaaa,\n" 6650 " 2, bbbbbbbbbbbbbbbbbbbbbb,\n" 6651 " 3, cccccccccccccccccccccc};", 6652 getLLVMStyleWithColumns(60)); 6653 6654 // Trailing commas. 6655 verifyFormat("vector<int> x = {\n" 6656 " 1, 1, 1, 1, 1, 1, 1, 1,\n" 6657 "};", 6658 getLLVMStyleWithColumns(39)); 6659 verifyFormat("vector<int> x = {\n" 6660 " 1, 1, 1, 1, 1, 1, 1, 1, //\n" 6661 "};", 6662 getLLVMStyleWithColumns(39)); 6663 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6664 " 1, 1, 1, 1,\n" 6665 " /**/ /**/};", 6666 getLLVMStyleWithColumns(39)); 6667 6668 // Trailing comment in the first line. 6669 verifyFormat("vector<int> iiiiiiiiiiiiiii = { //\n" 6670 " 1111111111, 2222222222, 33333333333, 4444444444, //\n" 6671 " 111111111, 222222222, 3333333333, 444444444, //\n" 6672 " 11111111, 22222222, 333333333, 44444444};"); 6673 // Trailing comment in the last line. 6674 verifyFormat("int aaaaa[] = {\n" 6675 " 1, 2, 3, // comment\n" 6676 " 4, 5, 6 // comment\n" 6677 "};"); 6678 6679 // With nested lists, we should either format one item per line or all nested 6680 // lists one on line. 6681 // FIXME: For some nested lists, we can do better. 6682 verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n" 6683 " {aaaaaaaaaaaaaaaaaaa},\n" 6684 " {aaaaaaaaaaaaaaaaaaaaa},\n" 6685 " {aaaaaaaaaaaaaaaaa}};", 6686 getLLVMStyleWithColumns(60)); 6687 verifyFormat( 6688 "SomeStruct my_struct_array = {\n" 6689 " {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n" 6690 " aaaaaaaaaaaaa, aaaaaaa, aaa},\n" 6691 " {aaa, aaa},\n" 6692 " {aaa, aaa},\n" 6693 " {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n" 6694 " {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n" 6695 " aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};"); 6696 6697 // No column layout should be used here. 6698 verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n" 6699 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};"); 6700 6701 verifyNoCrash("a<,"); 6702 6703 // No braced initializer here. 6704 verifyFormat("void f() {\n" 6705 " struct Dummy {};\n" 6706 " f(v);\n" 6707 "}"); 6708 6709 // Long lists should be formatted in columns even if they are nested. 6710 verifyFormat( 6711 "vector<int> x = function({1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6712 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6713 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6714 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6715 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6716 " 1, 22, 333, 4444, 55555, 666666, 7777777});"); 6717 } 6718 6719 TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) { 6720 FormatStyle DoNotMerge = getLLVMStyle(); 6721 DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 6722 6723 verifyFormat("void f() { return 42; }"); 6724 verifyFormat("void f() {\n" 6725 " return 42;\n" 6726 "}", 6727 DoNotMerge); 6728 verifyFormat("void f() {\n" 6729 " // Comment\n" 6730 "}"); 6731 verifyFormat("{\n" 6732 "#error {\n" 6733 " int a;\n" 6734 "}"); 6735 verifyFormat("{\n" 6736 " int a;\n" 6737 "#error {\n" 6738 "}"); 6739 verifyFormat("void f() {} // comment"); 6740 verifyFormat("void f() { int a; } // comment"); 6741 verifyFormat("void f() {\n" 6742 "} // comment", 6743 DoNotMerge); 6744 verifyFormat("void f() {\n" 6745 " int a;\n" 6746 "} // comment", 6747 DoNotMerge); 6748 verifyFormat("void f() {\n" 6749 "} // comment", 6750 getLLVMStyleWithColumns(15)); 6751 6752 verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23)); 6753 verifyFormat("void f() {\n return 42;\n}", getLLVMStyleWithColumns(22)); 6754 6755 verifyFormat("void f() {}", getLLVMStyleWithColumns(11)); 6756 verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10)); 6757 verifyFormat("class C {\n" 6758 " C()\n" 6759 " : iiiiiiii(nullptr),\n" 6760 " kkkkkkk(nullptr),\n" 6761 " mmmmmmm(nullptr),\n" 6762 " nnnnnnn(nullptr) {}\n" 6763 "};", 6764 getGoogleStyle()); 6765 6766 FormatStyle NoColumnLimit = getLLVMStyle(); 6767 NoColumnLimit.ColumnLimit = 0; 6768 EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit)); 6769 EXPECT_EQ("class C {\n" 6770 " A() : b(0) {}\n" 6771 "};", 6772 format("class C{A():b(0){}};", NoColumnLimit)); 6773 EXPECT_EQ("A()\n" 6774 " : b(0) {\n" 6775 "}", 6776 format("A()\n:b(0)\n{\n}", NoColumnLimit)); 6777 6778 FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit; 6779 DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine = 6780 FormatStyle::SFS_None; 6781 EXPECT_EQ("A()\n" 6782 " : b(0) {\n" 6783 "}", 6784 format("A():b(0){}", DoNotMergeNoColumnLimit)); 6785 EXPECT_EQ("A()\n" 6786 " : b(0) {\n" 6787 "}", 6788 format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit)); 6789 6790 verifyFormat("#define A \\\n" 6791 " void f() { \\\n" 6792 " int i; \\\n" 6793 " }", 6794 getLLVMStyleWithColumns(20)); 6795 verifyFormat("#define A \\\n" 6796 " void f() { int i; }", 6797 getLLVMStyleWithColumns(21)); 6798 verifyFormat("#define A \\\n" 6799 " void f() { \\\n" 6800 " int i; \\\n" 6801 " } \\\n" 6802 " int j;", 6803 getLLVMStyleWithColumns(22)); 6804 verifyFormat("#define A \\\n" 6805 " void f() { int i; } \\\n" 6806 " int j;", 6807 getLLVMStyleWithColumns(23)); 6808 } 6809 6810 TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) { 6811 FormatStyle MergeInlineOnly = getLLVMStyle(); 6812 MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 6813 verifyFormat("class C {\n" 6814 " int f() { return 42; }\n" 6815 "};", 6816 MergeInlineOnly); 6817 verifyFormat("int f() {\n" 6818 " return 42;\n" 6819 "}", 6820 MergeInlineOnly); 6821 } 6822 6823 TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) { 6824 // Elaborate type variable declarations. 6825 verifyFormat("struct foo a = {bar};\nint n;"); 6826 verifyFormat("class foo a = {bar};\nint n;"); 6827 verifyFormat("union foo a = {bar};\nint n;"); 6828 6829 // Elaborate types inside function definitions. 6830 verifyFormat("struct foo f() {}\nint n;"); 6831 verifyFormat("class foo f() {}\nint n;"); 6832 verifyFormat("union foo f() {}\nint n;"); 6833 6834 // Templates. 6835 verifyFormat("template <class X> void f() {}\nint n;"); 6836 verifyFormat("template <struct X> void f() {}\nint n;"); 6837 verifyFormat("template <union X> void f() {}\nint n;"); 6838 6839 // Actual definitions... 6840 verifyFormat("struct {\n} n;"); 6841 verifyFormat( 6842 "template <template <class T, class Y>, class Z> class X {\n} n;"); 6843 verifyFormat("union Z {\n int n;\n} x;"); 6844 verifyFormat("class MACRO Z {\n} n;"); 6845 verifyFormat("class MACRO(X) Z {\n} n;"); 6846 verifyFormat("class __attribute__(X) Z {\n} n;"); 6847 verifyFormat("class __declspec(X) Z {\n} n;"); 6848 verifyFormat("class A##B##C {\n} n;"); 6849 verifyFormat("class alignas(16) Z {\n} n;"); 6850 verifyFormat("class MACRO(X) alignas(16) Z {\n} n;"); 6851 verifyFormat("class MACROA MACRO(X) Z {\n} n;"); 6852 6853 // Redefinition from nested context: 6854 verifyFormat("class A::B::C {\n} n;"); 6855 6856 // Template definitions. 6857 verifyFormat( 6858 "template <typename F>\n" 6859 "Matcher(const Matcher<F> &Other,\n" 6860 " typename enable_if_c<is_base_of<F, T>::value &&\n" 6861 " !is_same<F, T>::value>::type * = 0)\n" 6862 " : Implementation(new ImplicitCastMatcher<F>(Other)) {}"); 6863 6864 // FIXME: This is still incorrectly handled at the formatter side. 6865 verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};"); 6866 verifyFormat("int i = SomeFunction(a<b, a> b);"); 6867 6868 // FIXME: 6869 // This now gets parsed incorrectly as class definition. 6870 // verifyFormat("class A<int> f() {\n}\nint n;"); 6871 6872 // Elaborate types where incorrectly parsing the structural element would 6873 // break the indent. 6874 verifyFormat("if (true)\n" 6875 " class X x;\n" 6876 "else\n" 6877 " f();\n"); 6878 6879 // This is simply incomplete. Formatting is not important, but must not crash. 6880 verifyFormat("class A:"); 6881 } 6882 6883 TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) { 6884 EXPECT_EQ("#error Leave all white!!!!! space* alone!\n", 6885 format("#error Leave all white!!!!! space* alone!\n")); 6886 EXPECT_EQ( 6887 "#warning Leave all white!!!!! space* alone!\n", 6888 format("#warning Leave all white!!!!! space* alone!\n")); 6889 EXPECT_EQ("#error 1", format(" # error 1")); 6890 EXPECT_EQ("#warning 1", format(" # warning 1")); 6891 } 6892 6893 TEST_F(FormatTest, FormatHashIfExpressions) { 6894 verifyFormat("#if AAAA && BBBB"); 6895 verifyFormat("#if (AAAA && BBBB)"); 6896 verifyFormat("#elif (AAAA && BBBB)"); 6897 // FIXME: Come up with a better indentation for #elif. 6898 verifyFormat( 6899 "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) && \\\n" 6900 " defined(BBBBBBBB)\n" 6901 "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) && \\\n" 6902 " defined(BBBBBBBB)\n" 6903 "#endif", 6904 getLLVMStyleWithColumns(65)); 6905 } 6906 6907 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) { 6908 FormatStyle AllowsMergedIf = getGoogleStyle(); 6909 AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; 6910 verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf); 6911 verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf); 6912 verifyFormat("if (true)\n#error E\n return 42;", AllowsMergedIf); 6913 EXPECT_EQ("if (true) return 42;", 6914 format("if (true)\nreturn 42;", AllowsMergedIf)); 6915 FormatStyle ShortMergedIf = AllowsMergedIf; 6916 ShortMergedIf.ColumnLimit = 25; 6917 verifyFormat("#define A \\\n" 6918 " if (true) return 42;", 6919 ShortMergedIf); 6920 verifyFormat("#define A \\\n" 6921 " f(); \\\n" 6922 " if (true)\n" 6923 "#define B", 6924 ShortMergedIf); 6925 verifyFormat("#define A \\\n" 6926 " f(); \\\n" 6927 " if (true)\n" 6928 "g();", 6929 ShortMergedIf); 6930 verifyFormat("{\n" 6931 "#ifdef A\n" 6932 " // Comment\n" 6933 " if (true) continue;\n" 6934 "#endif\n" 6935 " // Comment\n" 6936 " if (true) continue;\n" 6937 "}", 6938 ShortMergedIf); 6939 ShortMergedIf.ColumnLimit = 29; 6940 verifyFormat("#define A \\\n" 6941 " if (aaaaaaaaaa) return 1; \\\n" 6942 " return 2;", 6943 ShortMergedIf); 6944 ShortMergedIf.ColumnLimit = 28; 6945 verifyFormat("#define A \\\n" 6946 " if (aaaaaaaaaa) \\\n" 6947 " return 1; \\\n" 6948 " return 2;", 6949 ShortMergedIf); 6950 } 6951 6952 TEST_F(FormatTest, BlockCommentsInControlLoops) { 6953 verifyFormat("if (0) /* a comment in a strange place */ {\n" 6954 " f();\n" 6955 "}"); 6956 verifyFormat("if (0) /* a comment in a strange place */ {\n" 6957 " f();\n" 6958 "} /* another comment */ else /* comment #3 */ {\n" 6959 " g();\n" 6960 "}"); 6961 verifyFormat("while (0) /* a comment in a strange place */ {\n" 6962 " f();\n" 6963 "}"); 6964 verifyFormat("for (;;) /* a comment in a strange place */ {\n" 6965 " f();\n" 6966 "}"); 6967 verifyFormat("do /* a comment in a strange place */ {\n" 6968 " f();\n" 6969 "} /* another comment */ while (0);"); 6970 } 6971 6972 TEST_F(FormatTest, BlockComments) { 6973 EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */", 6974 format("/* *//* */ /* */\n/* *//* */ /* */")); 6975 EXPECT_EQ("/* */ a /* */ b;", format(" /* */ a/* */ b;")); 6976 EXPECT_EQ("#define A /*123*/ \\\n" 6977 " b\n" 6978 "/* */\n" 6979 "someCall(\n" 6980 " parameter);", 6981 format("#define A /*123*/ b\n" 6982 "/* */\n" 6983 "someCall(parameter);", 6984 getLLVMStyleWithColumns(15))); 6985 6986 EXPECT_EQ("#define A\n" 6987 "/* */ someCall(\n" 6988 " parameter);", 6989 format("#define A\n" 6990 "/* */someCall(parameter);", 6991 getLLVMStyleWithColumns(15))); 6992 EXPECT_EQ("/*\n**\n*/", format("/*\n**\n*/")); 6993 EXPECT_EQ("/*\n" 6994 "*\n" 6995 " * aaaaaa\n" 6996 " * aaaaaa\n" 6997 "*/", 6998 format("/*\n" 6999 "*\n" 7000 " * aaaaaa aaaaaa\n" 7001 "*/", 7002 getLLVMStyleWithColumns(10))); 7003 EXPECT_EQ("/*\n" 7004 "**\n" 7005 "* aaaaaa\n" 7006 "*aaaaaa\n" 7007 "*/", 7008 format("/*\n" 7009 "**\n" 7010 "* aaaaaa aaaaaa\n" 7011 "*/", 7012 getLLVMStyleWithColumns(10))); 7013 7014 FormatStyle NoBinPacking = getLLVMStyle(); 7015 NoBinPacking.BinPackParameters = false; 7016 EXPECT_EQ("someFunction(1, /* comment 1 */\n" 7017 " 2, /* comment 2 */\n" 7018 " 3, /* comment 3 */\n" 7019 " aaaa,\n" 7020 " bbbb);", 7021 format("someFunction (1, /* comment 1 */\n" 7022 " 2, /* comment 2 */ \n" 7023 " 3, /* comment 3 */\n" 7024 "aaaa, bbbb );", 7025 NoBinPacking)); 7026 verifyFormat( 7027 "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 7028 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 7029 EXPECT_EQ( 7030 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 7031 " aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 7032 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;", 7033 format( 7034 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 7035 " aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 7036 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;")); 7037 EXPECT_EQ( 7038 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 7039 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 7040 "int cccccccccccccccccccccccccccccc; /* comment */\n", 7041 format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 7042 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 7043 "int cccccccccccccccccccccccccccccc; /* comment */\n")); 7044 7045 verifyFormat("void f(int * /* unused */) {}"); 7046 7047 EXPECT_EQ("/*\n" 7048 " **\n" 7049 " */", 7050 format("/*\n" 7051 " **\n" 7052 " */")); 7053 EXPECT_EQ("/*\n" 7054 " *q\n" 7055 " */", 7056 format("/*\n" 7057 " *q\n" 7058 " */")); 7059 EXPECT_EQ("/*\n" 7060 " * q\n" 7061 " */", 7062 format("/*\n" 7063 " * q\n" 7064 " */")); 7065 EXPECT_EQ("/*\n" 7066 " **/", 7067 format("/*\n" 7068 " **/")); 7069 EXPECT_EQ("/*\n" 7070 " ***/", 7071 format("/*\n" 7072 " ***/")); 7073 } 7074 7075 TEST_F(FormatTest, BlockCommentsInMacros) { 7076 EXPECT_EQ("#define A \\\n" 7077 " { \\\n" 7078 " /* one line */ \\\n" 7079 " someCall();", 7080 format("#define A { \\\n" 7081 " /* one line */ \\\n" 7082 " someCall();", 7083 getLLVMStyleWithColumns(20))); 7084 EXPECT_EQ("#define A \\\n" 7085 " { \\\n" 7086 " /* previous */ \\\n" 7087 " /* one line */ \\\n" 7088 " someCall();", 7089 format("#define A { \\\n" 7090 " /* previous */ \\\n" 7091 " /* one line */ \\\n" 7092 " someCall();", 7093 getLLVMStyleWithColumns(20))); 7094 } 7095 7096 TEST_F(FormatTest, BlockCommentsAtEndOfLine) { 7097 EXPECT_EQ("a = {\n" 7098 " 1111 /* */\n" 7099 "};", 7100 format("a = {1111 /* */\n" 7101 "};", 7102 getLLVMStyleWithColumns(15))); 7103 EXPECT_EQ("a = {\n" 7104 " 1111 /* */\n" 7105 "};", 7106 format("a = {1111 /* */\n" 7107 "};", 7108 getLLVMStyleWithColumns(15))); 7109 7110 // FIXME: The formatting is still wrong here. 7111 EXPECT_EQ("a = {\n" 7112 " 1111 /* a\n" 7113 " */\n" 7114 "};", 7115 format("a = {1111 /* a */\n" 7116 "};", 7117 getLLVMStyleWithColumns(15))); 7118 } 7119 7120 TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) { 7121 verifyFormat("{\n" 7122 " // a\n" 7123 " // b"); 7124 } 7125 7126 TEST_F(FormatTest, FormatStarDependingOnContext) { 7127 verifyFormat("void f(int *a);"); 7128 verifyFormat("void f() { f(fint * b); }"); 7129 verifyFormat("class A {\n void f(int *a);\n};"); 7130 verifyFormat("class A {\n int *a;\n};"); 7131 verifyFormat("namespace a {\n" 7132 "namespace b {\n" 7133 "class A {\n" 7134 " void f() {}\n" 7135 " int *a;\n" 7136 "};\n" 7137 "}\n" 7138 "}"); 7139 } 7140 7141 TEST_F(FormatTest, SpecialTokensAtEndOfLine) { 7142 verifyFormat("while"); 7143 verifyFormat("operator"); 7144 } 7145 7146 //===----------------------------------------------------------------------===// 7147 // Objective-C tests. 7148 //===----------------------------------------------------------------------===// 7149 7150 TEST_F(FormatTest, FormatForObjectiveCMethodDecls) { 7151 verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;"); 7152 EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;", 7153 format("-(NSUInteger)indexOfObject:(id)anObject;")); 7154 EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;")); 7155 EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;")); 7156 EXPECT_EQ("- (NSInteger)Method3:(id)anObject;", 7157 format("-(NSInteger)Method3:(id)anObject;")); 7158 EXPECT_EQ("- (NSInteger)Method4:(id)anObject;", 7159 format("-(NSInteger)Method4:(id)anObject;")); 7160 EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;", 7161 format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;")); 7162 EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;", 7163 format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;")); 7164 EXPECT_EQ("- (void)sendAction:(SEL)aSelector to:(id)anObject " 7165 "forAllCells:(BOOL)flag;", 7166 format("- (void)sendAction:(SEL)aSelector to:(id)anObject " 7167 "forAllCells:(BOOL)flag;")); 7168 7169 // Very long objectiveC method declaration. 7170 verifyFormat("- (void)aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 7171 " (SoooooooooooooooooooooomeType *)bbbbbbbbbb;"); 7172 verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n" 7173 " inRange:(NSRange)range\n" 7174 " outRange:(NSRange)out_range\n" 7175 " outRange1:(NSRange)out_range1\n" 7176 " outRange2:(NSRange)out_range2\n" 7177 " outRange3:(NSRange)out_range3\n" 7178 " outRange4:(NSRange)out_range4\n" 7179 " outRange5:(NSRange)out_range5\n" 7180 " outRange6:(NSRange)out_range6\n" 7181 " outRange7:(NSRange)out_range7\n" 7182 " outRange8:(NSRange)out_range8\n" 7183 " outRange9:(NSRange)out_range9;"); 7184 7185 // When the function name has to be wrapped. 7186 FormatStyle Style = getLLVMStyle(); 7187 Style.IndentWrappedFunctionNames = false; 7188 verifyFormat("- (SomeLooooooooooooooooooooongType *)\n" 7189 "veryLooooooooooongName:(NSString)aaaaaaaaaaaaaa\n" 7190 " anotherName:(NSString)bbbbbbbbbbbbbb {\n" 7191 "}", 7192 Style); 7193 Style.IndentWrappedFunctionNames = true; 7194 verifyFormat("- (SomeLooooooooooooooooooooongType *)\n" 7195 " veryLooooooooooongName:(NSString)aaaaaaaaaaaaaa\n" 7196 " anotherName:(NSString)bbbbbbbbbbbbbb {\n" 7197 "}", 7198 Style); 7199 7200 verifyFormat("- (int)sum:(vector<int>)numbers;"); 7201 verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;"); 7202 // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC 7203 // protocol lists (but not for template classes): 7204 // verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;"); 7205 7206 verifyFormat("- (int (*)())foo:(int (*)())f;"); 7207 verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;"); 7208 7209 // If there's no return type (very rare in practice!), LLVM and Google style 7210 // agree. 7211 verifyFormat("- foo;"); 7212 verifyFormat("- foo:(int)f;"); 7213 verifyGoogleFormat("- foo:(int)foo;"); 7214 } 7215 7216 TEST_F(FormatTest, FormatObjCInterface) { 7217 verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n" 7218 "@public\n" 7219 " int field1;\n" 7220 "@protected\n" 7221 " int field2;\n" 7222 "@private\n" 7223 " int field3;\n" 7224 "@package\n" 7225 " int field4;\n" 7226 "}\n" 7227 "+ (id)init;\n" 7228 "@end"); 7229 7230 verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n" 7231 " @public\n" 7232 " int field1;\n" 7233 " @protected\n" 7234 " int field2;\n" 7235 " @private\n" 7236 " int field3;\n" 7237 " @package\n" 7238 " int field4;\n" 7239 "}\n" 7240 "+ (id)init;\n" 7241 "@end"); 7242 7243 verifyFormat("@interface /* wait for it */ Foo\n" 7244 "+ (id)init;\n" 7245 "// Look, a comment!\n" 7246 "- (int)answerWith:(int)i;\n" 7247 "@end"); 7248 7249 verifyFormat("@interface Foo\n" 7250 "@end\n" 7251 "@interface Bar\n" 7252 "@end"); 7253 7254 verifyFormat("@interface Foo : Bar\n" 7255 "+ (id)init;\n" 7256 "@end"); 7257 7258 verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n" 7259 "+ (id)init;\n" 7260 "@end"); 7261 7262 verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n" 7263 "+ (id)init;\n" 7264 "@end"); 7265 7266 verifyFormat("@interface Foo (HackStuff)\n" 7267 "+ (id)init;\n" 7268 "@end"); 7269 7270 verifyFormat("@interface Foo ()\n" 7271 "+ (id)init;\n" 7272 "@end"); 7273 7274 verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n" 7275 "+ (id)init;\n" 7276 "@end"); 7277 7278 verifyGoogleFormat("@interface Foo (HackStuff)<MyProtocol>\n" 7279 "+ (id)init;\n" 7280 "@end"); 7281 7282 verifyFormat("@interface Foo {\n" 7283 " int _i;\n" 7284 "}\n" 7285 "+ (id)init;\n" 7286 "@end"); 7287 7288 verifyFormat("@interface Foo : Bar {\n" 7289 " int _i;\n" 7290 "}\n" 7291 "+ (id)init;\n" 7292 "@end"); 7293 7294 verifyFormat("@interface Foo : Bar <Baz, Quux> {\n" 7295 " int _i;\n" 7296 "}\n" 7297 "+ (id)init;\n" 7298 "@end"); 7299 7300 verifyFormat("@interface Foo (HackStuff) {\n" 7301 " int _i;\n" 7302 "}\n" 7303 "+ (id)init;\n" 7304 "@end"); 7305 7306 verifyFormat("@interface Foo () {\n" 7307 " int _i;\n" 7308 "}\n" 7309 "+ (id)init;\n" 7310 "@end"); 7311 7312 verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n" 7313 " int _i;\n" 7314 "}\n" 7315 "+ (id)init;\n" 7316 "@end"); 7317 7318 FormatStyle OnePerLine = getGoogleStyle(); 7319 OnePerLine.BinPackParameters = false; 7320 verifyFormat("@interface aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ()<\n" 7321 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 7322 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 7323 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 7324 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n" 7325 "}", 7326 OnePerLine); 7327 } 7328 7329 TEST_F(FormatTest, FormatObjCImplementation) { 7330 verifyFormat("@implementation Foo : NSObject {\n" 7331 "@public\n" 7332 " int field1;\n" 7333 "@protected\n" 7334 " int field2;\n" 7335 "@private\n" 7336 " int field3;\n" 7337 "@package\n" 7338 " int field4;\n" 7339 "}\n" 7340 "+ (id)init {\n}\n" 7341 "@end"); 7342 7343 verifyGoogleFormat("@implementation Foo : NSObject {\n" 7344 " @public\n" 7345 " int field1;\n" 7346 " @protected\n" 7347 " int field2;\n" 7348 " @private\n" 7349 " int field3;\n" 7350 " @package\n" 7351 " int field4;\n" 7352 "}\n" 7353 "+ (id)init {\n}\n" 7354 "@end"); 7355 7356 verifyFormat("@implementation Foo\n" 7357 "+ (id)init {\n" 7358 " if (true)\n" 7359 " return nil;\n" 7360 "}\n" 7361 "// Look, a comment!\n" 7362 "- (int)answerWith:(int)i {\n" 7363 " return i;\n" 7364 "}\n" 7365 "+ (int)answerWith:(int)i {\n" 7366 " return i;\n" 7367 "}\n" 7368 "@end"); 7369 7370 verifyFormat("@implementation Foo\n" 7371 "@end\n" 7372 "@implementation Bar\n" 7373 "@end"); 7374 7375 EXPECT_EQ("@implementation Foo : Bar\n" 7376 "+ (id)init {\n}\n" 7377 "- (void)foo {\n}\n" 7378 "@end", 7379 format("@implementation Foo : Bar\n" 7380 "+(id)init{}\n" 7381 "-(void)foo{}\n" 7382 "@end")); 7383 7384 verifyFormat("@implementation Foo {\n" 7385 " int _i;\n" 7386 "}\n" 7387 "+ (id)init {\n}\n" 7388 "@end"); 7389 7390 verifyFormat("@implementation Foo : Bar {\n" 7391 " int _i;\n" 7392 "}\n" 7393 "+ (id)init {\n}\n" 7394 "@end"); 7395 7396 verifyFormat("@implementation Foo (HackStuff)\n" 7397 "+ (id)init {\n}\n" 7398 "@end"); 7399 verifyFormat("@implementation ObjcClass\n" 7400 "- (void)method;\n" 7401 "{}\n" 7402 "@end"); 7403 } 7404 7405 TEST_F(FormatTest, FormatObjCProtocol) { 7406 verifyFormat("@protocol Foo\n" 7407 "@property(weak) id delegate;\n" 7408 "- (NSUInteger)numberOfThings;\n" 7409 "@end"); 7410 7411 verifyFormat("@protocol MyProtocol <NSObject>\n" 7412 "- (NSUInteger)numberOfThings;\n" 7413 "@end"); 7414 7415 verifyGoogleFormat("@protocol MyProtocol<NSObject>\n" 7416 "- (NSUInteger)numberOfThings;\n" 7417 "@end"); 7418 7419 verifyFormat("@protocol Foo;\n" 7420 "@protocol Bar;\n"); 7421 7422 verifyFormat("@protocol Foo\n" 7423 "@end\n" 7424 "@protocol Bar\n" 7425 "@end"); 7426 7427 verifyFormat("@protocol myProtocol\n" 7428 "- (void)mandatoryWithInt:(int)i;\n" 7429 "@optional\n" 7430 "- (void)optional;\n" 7431 "@required\n" 7432 "- (void)required;\n" 7433 "@optional\n" 7434 "@property(assign) int madProp;\n" 7435 "@end\n"); 7436 7437 verifyFormat("@property(nonatomic, assign, readonly)\n" 7438 " int *looooooooooooooooooooooooooooongNumber;\n" 7439 "@property(nonatomic, assign, readonly)\n" 7440 " NSString *looooooooooooooooooooooooooooongName;"); 7441 7442 verifyFormat("@implementation PR18406\n" 7443 "}\n" 7444 "@end"); 7445 } 7446 7447 TEST_F(FormatTest, FormatObjCMethodDeclarations) { 7448 verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n" 7449 " rect:(NSRect)theRect\n" 7450 " interval:(float)theInterval {\n" 7451 "}"); 7452 verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n" 7453 " longKeyword:(NSRect)theRect\n" 7454 " longerKeyword:(float)theInterval\n" 7455 " error:(NSError **)theError {\n" 7456 "}"); 7457 verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n" 7458 " longKeyword:(NSRect)theRect\n" 7459 " evenLongerKeyword:(float)theInterval\n" 7460 " error:(NSError **)theError {\n" 7461 "}"); 7462 verifyFormat("- (instancetype)initXxxxxx:(id<x>)x\n" 7463 " y:(id<yyyyyyyyyyyyyyyyyyyy>)y\n" 7464 " NS_DESIGNATED_INITIALIZER;", 7465 getLLVMStyleWithColumns(60)); 7466 7467 // Continuation indent width should win over aligning colons if the function 7468 // name is long. 7469 FormatStyle continuationStyle = getGoogleStyle(); 7470 continuationStyle.ColumnLimit = 40; 7471 continuationStyle.IndentWrappedFunctionNames = true; 7472 verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n" 7473 " dontAlignNamef:(NSRect)theRect {\n" 7474 "}", 7475 continuationStyle); 7476 7477 // Make sure we don't break aligning for short parameter names. 7478 verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n" 7479 " aShortf:(NSRect)theRect {\n" 7480 "}", 7481 continuationStyle); 7482 } 7483 7484 TEST_F(FormatTest, FormatObjCMethodExpr) { 7485 verifyFormat("[foo bar:baz];"); 7486 verifyFormat("return [foo bar:baz];"); 7487 verifyFormat("return (a)[foo bar:baz];"); 7488 verifyFormat("f([foo bar:baz]);"); 7489 verifyFormat("f(2, [foo bar:baz]);"); 7490 verifyFormat("f(2, a ? b : c);"); 7491 verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];"); 7492 7493 // Unary operators. 7494 verifyFormat("int a = +[foo bar:baz];"); 7495 verifyFormat("int a = -[foo bar:baz];"); 7496 verifyFormat("int a = ![foo bar:baz];"); 7497 verifyFormat("int a = ~[foo bar:baz];"); 7498 verifyFormat("int a = ++[foo bar:baz];"); 7499 verifyFormat("int a = --[foo bar:baz];"); 7500 verifyFormat("int a = sizeof [foo bar:baz];"); 7501 verifyFormat("int a = alignof [foo bar:baz];", getGoogleStyle()); 7502 verifyFormat("int a = &[foo bar:baz];"); 7503 verifyFormat("int a = *[foo bar:baz];"); 7504 // FIXME: Make casts work, without breaking f()[4]. 7505 // verifyFormat("int a = (int)[foo bar:baz];"); 7506 // verifyFormat("return (int)[foo bar:baz];"); 7507 // verifyFormat("(void)[foo bar:baz];"); 7508 verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];"); 7509 7510 // Binary operators. 7511 verifyFormat("[foo bar:baz], [foo bar:baz];"); 7512 verifyFormat("[foo bar:baz] = [foo bar:baz];"); 7513 verifyFormat("[foo bar:baz] *= [foo bar:baz];"); 7514 verifyFormat("[foo bar:baz] /= [foo bar:baz];"); 7515 verifyFormat("[foo bar:baz] %= [foo bar:baz];"); 7516 verifyFormat("[foo bar:baz] += [foo bar:baz];"); 7517 verifyFormat("[foo bar:baz] -= [foo bar:baz];"); 7518 verifyFormat("[foo bar:baz] <<= [foo bar:baz];"); 7519 verifyFormat("[foo bar:baz] >>= [foo bar:baz];"); 7520 verifyFormat("[foo bar:baz] &= [foo bar:baz];"); 7521 verifyFormat("[foo bar:baz] ^= [foo bar:baz];"); 7522 verifyFormat("[foo bar:baz] |= [foo bar:baz];"); 7523 verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];"); 7524 verifyFormat("[foo bar:baz] || [foo bar:baz];"); 7525 verifyFormat("[foo bar:baz] && [foo bar:baz];"); 7526 verifyFormat("[foo bar:baz] | [foo bar:baz];"); 7527 verifyFormat("[foo bar:baz] ^ [foo bar:baz];"); 7528 verifyFormat("[foo bar:baz] & [foo bar:baz];"); 7529 verifyFormat("[foo bar:baz] == [foo bar:baz];"); 7530 verifyFormat("[foo bar:baz] != [foo bar:baz];"); 7531 verifyFormat("[foo bar:baz] >= [foo bar:baz];"); 7532 verifyFormat("[foo bar:baz] <= [foo bar:baz];"); 7533 verifyFormat("[foo bar:baz] > [foo bar:baz];"); 7534 verifyFormat("[foo bar:baz] < [foo bar:baz];"); 7535 verifyFormat("[foo bar:baz] >> [foo bar:baz];"); 7536 verifyFormat("[foo bar:baz] << [foo bar:baz];"); 7537 verifyFormat("[foo bar:baz] - [foo bar:baz];"); 7538 verifyFormat("[foo bar:baz] + [foo bar:baz];"); 7539 verifyFormat("[foo bar:baz] * [foo bar:baz];"); 7540 verifyFormat("[foo bar:baz] / [foo bar:baz];"); 7541 verifyFormat("[foo bar:baz] % [foo bar:baz];"); 7542 // Whew! 7543 7544 verifyFormat("return in[42];"); 7545 verifyFormat("for (auto v : in[1]) {\n}"); 7546 verifyFormat("for (int i = 0; i < in[a]; ++i) {\n}"); 7547 verifyFormat("for (int i = 0; in[a] < i; ++i) {\n}"); 7548 verifyFormat("for (int i = 0; i < n; ++i, ++in[a]) {\n}"); 7549 verifyFormat("for (int i = 0; i < n; ++i, in[a]++) {\n}"); 7550 verifyFormat("for (int i = 0; i < f(in[a]); ++i, in[a]++) {\n}"); 7551 verifyFormat("for (id foo in [self getStuffFor:bla]) {\n" 7552 "}"); 7553 verifyFormat("[self aaaaa:MACRO(a, b:, c:)];"); 7554 verifyFormat("[self aaaaa:(1 + 2) bbbbb:3];"); 7555 verifyFormat("[self aaaaa:(Type)a bbbbb:3];"); 7556 7557 verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];"); 7558 verifyFormat("[self stuffWithInt:a ? b : c float:4.5];"); 7559 verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];"); 7560 verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];"); 7561 verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]"); 7562 verifyFormat("[button setAction:@selector(zoomOut:)];"); 7563 verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];"); 7564 7565 verifyFormat("arr[[self indexForFoo:a]];"); 7566 verifyFormat("throw [self errorFor:a];"); 7567 verifyFormat("@throw [self errorFor:a];"); 7568 7569 verifyFormat("[(id)foo bar:(id)baz quux:(id)snorf];"); 7570 verifyFormat("[(id)foo bar:(id) ? baz : quux];"); 7571 verifyFormat("4 > 4 ? (id)a : (id)baz;"); 7572 7573 // This tests that the formatter doesn't break after "backing" but before ":", 7574 // which would be at 80 columns. 7575 verifyFormat( 7576 "void f() {\n" 7577 " if ((self = [super initWithContentRect:contentRect\n" 7578 " styleMask:styleMask ?: otherMask\n" 7579 " backing:NSBackingStoreBuffered\n" 7580 " defer:YES]))"); 7581 7582 verifyFormat( 7583 "[foo checkThatBreakingAfterColonWorksOk:\n" 7584 " [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];"); 7585 7586 verifyFormat("[myObj short:arg1 // Force line break\n" 7587 " longKeyword:arg2 != nil ? arg2 : @\"longKeyword\"\n" 7588 " evenLongerKeyword:arg3 ?: @\"evenLongerKeyword\"\n" 7589 " error:arg4];"); 7590 verifyFormat( 7591 "void f() {\n" 7592 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 7593 " initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n" 7594 " pos.width(), pos.height())\n" 7595 " styleMask:NSBorderlessWindowMask\n" 7596 " backing:NSBackingStoreBuffered\n" 7597 " defer:NO]);\n" 7598 "}"); 7599 verifyFormat( 7600 "void f() {\n" 7601 " popup_wdow_.reset([[RenderWidgetPopupWindow alloc]\n" 7602 " iniithContentRect:NSMakRet(origin_global.x, origin_global.y,\n" 7603 " pos.width(), pos.height())\n" 7604 " syeMask:NSBorderlessWindowMask\n" 7605 " bking:NSBackingStoreBuffered\n" 7606 " der:NO]);\n" 7607 "}", 7608 getLLVMStyleWithColumns(70)); 7609 verifyFormat( 7610 "void f() {\n" 7611 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 7612 " initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n" 7613 " pos.width(), pos.height())\n" 7614 " styleMask:NSBorderlessWindowMask\n" 7615 " backing:NSBackingStoreBuffered\n" 7616 " defer:NO]);\n" 7617 "}", 7618 getChromiumStyle(FormatStyle::LK_Cpp)); 7619 verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n" 7620 " with:contentsNativeView];"); 7621 7622 verifyFormat( 7623 "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n" 7624 " owner:nillllll];"); 7625 7626 verifyFormat( 7627 "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n" 7628 " forType:kBookmarkButtonDragType];"); 7629 7630 verifyFormat("[defaultCenter addObserver:self\n" 7631 " selector:@selector(willEnterFullscreen)\n" 7632 " name:kWillEnterFullscreenNotification\n" 7633 " object:nil];"); 7634 verifyFormat("[image_rep drawInRect:drawRect\n" 7635 " fromRect:NSZeroRect\n" 7636 " operation:NSCompositeCopy\n" 7637 " fraction:1.0\n" 7638 " respectFlipped:NO\n" 7639 " hints:nil];"); 7640 verifyFormat("[aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 7641 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];"); 7642 verifyFormat("[aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 7643 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];"); 7644 verifyFormat("[aaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaa[aaaaaaaaaaaaaaaaaaaaa]\n" 7645 " aaaaaaaaaaaaaaaaaaaaaa];"); 7646 verifyFormat("[call aaaaaaaa.aaaaaa.aaaaaaaa.aaaaaaaa.aaaaaaaa.aaaaaaaa\n" 7647 " .aaaaaaaa];", // FIXME: Indentation seems off. 7648 getLLVMStyleWithColumns(60)); 7649 7650 verifyFormat( 7651 "scoped_nsobject<NSTextField> message(\n" 7652 " // The frame will be fixed up when |-setMessageText:| is called.\n" 7653 " [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);"); 7654 verifyFormat("[self aaaaaa:bbbbbbbbbbbbb\n" 7655 " aaaaaaaaaa:bbbbbbbbbbbbbbbbb\n" 7656 " aaaaa:bbbbbbbbbbb + bbbbbbbbbbbb\n" 7657 " aaaa:bbb];"); 7658 verifyFormat("[self param:function( //\n" 7659 " parameter)]"); 7660 verifyFormat( 7661 "[self aaaaaaaaaa:aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 7662 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 7663 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa];"); 7664 7665 // FIXME: This violates the column limit. 7666 verifyFormat( 7667 "[aaaaaaaaaaaaaaaaaaaaaaaaa\n" 7668 " aaaaaaaaaaaaaaaaa:aaaaaaaa\n" 7669 " aaa:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];", 7670 getLLVMStyleWithColumns(60)); 7671 7672 // Variadic parameters. 7673 verifyFormat( 7674 "NSArray *myStrings = [NSArray stringarray:@\"a\", @\"b\", nil];"); 7675 verifyFormat( 7676 "[self aaaaaaaaaaaaa:aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 7677 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 7678 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa];"); 7679 verifyFormat("[self // break\n" 7680 " a:a\n" 7681 " aaa:aaa];"); 7682 verifyFormat("bool a = ([aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaa ||\n" 7683 " [aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaaaaa);"); 7684 } 7685 7686 TEST_F(FormatTest, ObjCAt) { 7687 verifyFormat("@autoreleasepool"); 7688 verifyFormat("@catch"); 7689 verifyFormat("@class"); 7690 verifyFormat("@compatibility_alias"); 7691 verifyFormat("@defs"); 7692 verifyFormat("@dynamic"); 7693 verifyFormat("@encode"); 7694 verifyFormat("@end"); 7695 verifyFormat("@finally"); 7696 verifyFormat("@implementation"); 7697 verifyFormat("@import"); 7698 verifyFormat("@interface"); 7699 verifyFormat("@optional"); 7700 verifyFormat("@package"); 7701 verifyFormat("@private"); 7702 verifyFormat("@property"); 7703 verifyFormat("@protected"); 7704 verifyFormat("@protocol"); 7705 verifyFormat("@public"); 7706 verifyFormat("@required"); 7707 verifyFormat("@selector"); 7708 verifyFormat("@synchronized"); 7709 verifyFormat("@synthesize"); 7710 verifyFormat("@throw"); 7711 verifyFormat("@try"); 7712 7713 EXPECT_EQ("@interface", format("@ interface")); 7714 7715 // The precise formatting of this doesn't matter, nobody writes code like 7716 // this. 7717 verifyFormat("@ /*foo*/ interface"); 7718 } 7719 7720 TEST_F(FormatTest, ObjCSnippets) { 7721 verifyFormat("@autoreleasepool {\n" 7722 " foo();\n" 7723 "}"); 7724 verifyFormat("@class Foo, Bar;"); 7725 verifyFormat("@compatibility_alias AliasName ExistingClass;"); 7726 verifyFormat("@dynamic textColor;"); 7727 verifyFormat("char *buf1 = @encode(int *);"); 7728 verifyFormat("char *buf1 = @encode(typeof(4 * 5));"); 7729 verifyFormat("char *buf1 = @encode(int **);"); 7730 verifyFormat("Protocol *proto = @protocol(p1);"); 7731 verifyFormat("SEL s = @selector(foo:);"); 7732 verifyFormat("@synchronized(self) {\n" 7733 " f();\n" 7734 "}"); 7735 7736 verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 7737 verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 7738 7739 verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;"); 7740 verifyFormat("@property(assign, getter=isEditable) BOOL editable;"); 7741 verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;"); 7742 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 7743 getMozillaStyle()); 7744 verifyFormat("@property BOOL editable;", getMozillaStyle()); 7745 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 7746 getWebKitStyle()); 7747 verifyFormat("@property BOOL editable;", getWebKitStyle()); 7748 7749 verifyFormat("@import foo.bar;\n" 7750 "@import baz;"); 7751 } 7752 7753 TEST_F(FormatTest, ObjCForIn) { 7754 verifyFormat("- (void)test {\n" 7755 " for (NSString *n in arrayOfStrings) {\n" 7756 " foo(n);\n" 7757 " }\n" 7758 "}"); 7759 verifyFormat("- (void)test {\n" 7760 " for (NSString *n in (__bridge NSArray *)arrayOfStrings) {\n" 7761 " foo(n);\n" 7762 " }\n" 7763 "}"); 7764 } 7765 7766 TEST_F(FormatTest, ObjCLiterals) { 7767 verifyFormat("@\"String\""); 7768 verifyFormat("@1"); 7769 verifyFormat("@+4.8"); 7770 verifyFormat("@-4"); 7771 verifyFormat("@1LL"); 7772 verifyFormat("@.5"); 7773 verifyFormat("@'c'"); 7774 verifyFormat("@true"); 7775 7776 verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);"); 7777 verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);"); 7778 verifyFormat("NSNumber *favoriteColor = @(Green);"); 7779 verifyFormat("NSString *path = @(getenv(\"PATH\"));"); 7780 7781 verifyFormat("[dictionary setObject:@(1) forKey:@\"number\"];"); 7782 } 7783 7784 TEST_F(FormatTest, ObjCDictLiterals) { 7785 verifyFormat("@{"); 7786 verifyFormat("@{}"); 7787 verifyFormat("@{@\"one\" : @1}"); 7788 verifyFormat("return @{@\"one\" : @1;"); 7789 verifyFormat("@{@\"one\" : @1}"); 7790 7791 verifyFormat("@{@\"one\" : @{@2 : @1}}"); 7792 verifyFormat("@{\n" 7793 " @\"one\" : @{@2 : @1},\n" 7794 "}"); 7795 7796 verifyFormat("@{1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2}"); 7797 verifyIncompleteFormat("[self setDict:@{}"); 7798 verifyIncompleteFormat("[self setDict:@{@1 : @2}"); 7799 verifyFormat("NSLog(@\"%@\", @{@1 : @2, @2 : @3}[@1]);"); 7800 verifyFormat( 7801 "NSDictionary *masses = @{@\"H\" : @1.0078, @\"He\" : @4.0026};"); 7802 verifyFormat( 7803 "NSDictionary *settings = @{AVEncoderKey : @(AVAudioQualityMax)};"); 7804 7805 verifyFormat("NSDictionary *d = @{\n" 7806 " @\"nam\" : NSUserNam(),\n" 7807 " @\"dte\" : [NSDate date],\n" 7808 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 7809 "};"); 7810 verifyFormat( 7811 "@{\n" 7812 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 7813 "regularFont,\n" 7814 "};"); 7815 verifyGoogleFormat( 7816 "@{\n" 7817 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 7818 "regularFont,\n" 7819 "};"); 7820 verifyFormat( 7821 "@{\n" 7822 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee :\n" 7823 " reeeeeeeeeeeeeeeeeeeeeeeegularFont,\n" 7824 "};"); 7825 7826 // We should try to be robust in case someone forgets the "@". 7827 verifyFormat("NSDictionary *d = {\n" 7828 " @\"nam\" : NSUserNam(),\n" 7829 " @\"dte\" : [NSDate date],\n" 7830 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 7831 "};"); 7832 verifyFormat("NSMutableDictionary *dictionary =\n" 7833 " [NSMutableDictionary dictionaryWithDictionary:@{\n" 7834 " aaaaaaaaaaaaaaaaaaaaa : aaaaaaaaaaaaa,\n" 7835 " bbbbbbbbbbbbbbbbbb : bbbbb,\n" 7836 " cccccccccccccccc : ccccccccccccccc\n" 7837 " }];"); 7838 7839 // Ensure that casts before the key are kept on the same line as the key. 7840 verifyFormat( 7841 "NSDictionary *d = @{\n" 7842 " (aaaaaaaa id)aaaaaaaaa : (aaaaaaaa id)aaaaaaaaaaaaaaaaaaaaaaaa,\n" 7843 " (aaaaaaaa id)aaaaaaaaaaaaaa : (aaaaaaaa id)aaaaaaaaaaaaaa,\n" 7844 "};"); 7845 } 7846 7847 TEST_F(FormatTest, ObjCArrayLiterals) { 7848 verifyIncompleteFormat("@["); 7849 verifyFormat("@[]"); 7850 verifyFormat( 7851 "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];"); 7852 verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];"); 7853 verifyFormat("NSArray *array = @[ [foo description] ];"); 7854 7855 verifyFormat( 7856 "NSArray *some_variable = @[\n" 7857 " aaaa == bbbbbbbbbbb ? @\"aaaaaaaaaaaa\" : @\"aaaaaaaaaaaaaa\",\n" 7858 " @\"aaaaaaaaaaaaaaaaa\",\n" 7859 " @\"aaaaaaaaaaaaaaaaa\",\n" 7860 " @\"aaaaaaaaaaaaaaaaa\",\n" 7861 "];"); 7862 verifyFormat( 7863 "NSArray *some_variable = @[\n" 7864 " aaaa == bbbbbbbbbbb ? @\"aaaaaaaaaaaa\" : @\"aaaaaaaaaaaaaa\",\n" 7865 " @\"aaaaaaaaaaaaaaaa\", @\"aaaaaaaaaaaaaaaa\", @\"aaaaaaaaaaaaaaaa\"\n" 7866 "];"); 7867 verifyFormat("NSArray *some_variable = @[\n" 7868 " @\"aaaaaaaaaaaaaaaaa\",\n" 7869 " @\"aaaaaaaaaaaaaaaaa\",\n" 7870 " @\"aaaaaaaaaaaaaaaaa\",\n" 7871 " @\"aaaaaaaaaaaaaaaaa\",\n" 7872 "];"); 7873 verifyFormat("NSArray *array = @[\n" 7874 " @\"a\",\n" 7875 " @\"a\",\n" // Trailing comma -> one per line. 7876 "];"); 7877 7878 // We should try to be robust in case someone forgets the "@". 7879 verifyFormat("NSArray *some_variable = [\n" 7880 " @\"aaaaaaaaaaaaaaaaa\",\n" 7881 " @\"aaaaaaaaaaaaaaaaa\",\n" 7882 " @\"aaaaaaaaaaaaaaaaa\",\n" 7883 " @\"aaaaaaaaaaaaaaaaa\",\n" 7884 "];"); 7885 verifyFormat( 7886 "- (NSAttributedString *)attributedStringForSegment:(NSUInteger)segment\n" 7887 " index:(NSUInteger)index\n" 7888 " nonDigitAttributes:\n" 7889 " (NSDictionary *)noDigitAttributes;"); 7890 verifyFormat("[someFunction someLooooooooooooongParameter:@[\n" 7891 " NSBundle.mainBundle.infoDictionary[@\"a\"]\n" 7892 "]];"); 7893 } 7894 7895 TEST_F(FormatTest, BreaksStringLiterals) { 7896 EXPECT_EQ("\"some text \"\n" 7897 "\"other\";", 7898 format("\"some text other\";", getLLVMStyleWithColumns(12))); 7899 EXPECT_EQ("\"some text \"\n" 7900 "\"other\";", 7901 format("\\\n\"some text other\";", getLLVMStyleWithColumns(12))); 7902 EXPECT_EQ( 7903 "#define A \\\n" 7904 " \"some \" \\\n" 7905 " \"text \" \\\n" 7906 " \"other\";", 7907 format("#define A \"some text other\";", getLLVMStyleWithColumns(12))); 7908 EXPECT_EQ( 7909 "#define A \\\n" 7910 " \"so \" \\\n" 7911 " \"text \" \\\n" 7912 " \"other\";", 7913 format("#define A \"so text other\";", getLLVMStyleWithColumns(12))); 7914 7915 EXPECT_EQ("\"some text\"", 7916 format("\"some text\"", getLLVMStyleWithColumns(1))); 7917 EXPECT_EQ("\"some text\"", 7918 format("\"some text\"", getLLVMStyleWithColumns(11))); 7919 EXPECT_EQ("\"some \"\n" 7920 "\"text\"", 7921 format("\"some text\"", getLLVMStyleWithColumns(10))); 7922 EXPECT_EQ("\"some \"\n" 7923 "\"text\"", 7924 format("\"some text\"", getLLVMStyleWithColumns(7))); 7925 EXPECT_EQ("\"some\"\n" 7926 "\" tex\"\n" 7927 "\"t\"", 7928 format("\"some text\"", getLLVMStyleWithColumns(6))); 7929 EXPECT_EQ("\"some\"\n" 7930 "\" tex\"\n" 7931 "\" and\"", 7932 format("\"some tex and\"", getLLVMStyleWithColumns(6))); 7933 EXPECT_EQ("\"some\"\n" 7934 "\"/tex\"\n" 7935 "\"/and\"", 7936 format("\"some/tex/and\"", getLLVMStyleWithColumns(6))); 7937 7938 EXPECT_EQ("variable =\n" 7939 " \"long string \"\n" 7940 " \"literal\";", 7941 format("variable = \"long string literal\";", 7942 getLLVMStyleWithColumns(20))); 7943 7944 EXPECT_EQ("variable = f(\n" 7945 " \"long string \"\n" 7946 " \"literal\",\n" 7947 " short,\n" 7948 " loooooooooooooooooooong);", 7949 format("variable = f(\"long string literal\", short, " 7950 "loooooooooooooooooooong);", 7951 getLLVMStyleWithColumns(20))); 7952 7953 EXPECT_EQ( 7954 "f(g(\"long string \"\n" 7955 " \"literal\"),\n" 7956 " b);", 7957 format("f(g(\"long string literal\"), b);", getLLVMStyleWithColumns(20))); 7958 EXPECT_EQ("f(g(\"long string \"\n" 7959 " \"literal\",\n" 7960 " a),\n" 7961 " b);", 7962 format("f(g(\"long string literal\", a), b);", 7963 getLLVMStyleWithColumns(20))); 7964 EXPECT_EQ( 7965 "f(\"one two\".split(\n" 7966 " variable));", 7967 format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20))); 7968 EXPECT_EQ("f(\"one two three four five six \"\n" 7969 " \"seven\".split(\n" 7970 " really_looooong_variable));", 7971 format("f(\"one two three four five six seven\"." 7972 "split(really_looooong_variable));", 7973 getLLVMStyleWithColumns(33))); 7974 7975 EXPECT_EQ("f(\"some \"\n" 7976 " \"text\",\n" 7977 " other);", 7978 format("f(\"some text\", other);", getLLVMStyleWithColumns(10))); 7979 7980 // Only break as a last resort. 7981 verifyFormat( 7982 "aaaaaaaaaaaaaaaaaaaa(\n" 7983 " aaaaaaaaaaaaaaaaaaaa,\n" 7984 " aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));"); 7985 7986 EXPECT_EQ("\"splitmea\"\n" 7987 "\"trandomp\"\n" 7988 "\"oint\"", 7989 format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10))); 7990 7991 EXPECT_EQ("\"split/\"\n" 7992 "\"pathat/\"\n" 7993 "\"slashes\"", 7994 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 7995 7996 EXPECT_EQ("\"split/\"\n" 7997 "\"pathat/\"\n" 7998 "\"slashes\"", 7999 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 8000 EXPECT_EQ("\"split at \"\n" 8001 "\"spaces/at/\"\n" 8002 "\"slashes.at.any$\"\n" 8003 "\"non-alphanumeric%\"\n" 8004 "\"1111111111characte\"\n" 8005 "\"rs\"", 8006 format("\"split at " 8007 "spaces/at/" 8008 "slashes.at." 8009 "any$non-" 8010 "alphanumeric%" 8011 "1111111111characte" 8012 "rs\"", 8013 getLLVMStyleWithColumns(20))); 8014 8015 // Verify that splitting the strings understands 8016 // Style::AlwaysBreakBeforeMultilineStrings. 8017 EXPECT_EQ( 8018 "aaaaaaaaaaaa(\n" 8019 " \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n" 8020 " \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");", 8021 format("aaaaaaaaaaaa(\"aaaaaaaaaaaaaaaaaaaaaaaaaa " 8022 "aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa " 8023 "aaaaaaaaaaaaaaaaaaaaaa\");", 8024 getGoogleStyle())); 8025 EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 8026 " \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";", 8027 format("return \"aaaaaaaaaaaaaaaaaaaaaa " 8028 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa " 8029 "aaaaaaaaaaaaaaaaaaaaaa\";", 8030 getGoogleStyle())); 8031 EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 8032 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 8033 format("llvm::outs() << " 8034 "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa" 8035 "aaaaaaaaaaaaaaaaaaa\";")); 8036 EXPECT_EQ("ffff(\n" 8037 " {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 8038 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 8039 format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa " 8040 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 8041 getGoogleStyle())); 8042 8043 FormatStyle Style = getLLVMStyleWithColumns(12); 8044 Style.BreakStringLiterals = false; 8045 EXPECT_EQ("\"some text other\";", format("\"some text other\";", Style)); 8046 8047 FormatStyle AlignLeft = getLLVMStyleWithColumns(12); 8048 AlignLeft.AlignEscapedNewlinesLeft = true; 8049 EXPECT_EQ("#define A \\\n" 8050 " \"some \" \\\n" 8051 " \"text \" \\\n" 8052 " \"other\";", 8053 format("#define A \"some text other\";", AlignLeft)); 8054 } 8055 8056 TEST_F(FormatTest, FullyRemoveEmptyLines) { 8057 FormatStyle NoEmptyLines = getLLVMStyleWithColumns(80); 8058 NoEmptyLines.MaxEmptyLinesToKeep = 0; 8059 EXPECT_EQ("int i = a(b());", 8060 format("int i=a(\n\n b(\n\n\n )\n\n);", NoEmptyLines)); 8061 } 8062 8063 TEST_F(FormatTest, BreaksStringLiteralsWithTabs) { 8064 EXPECT_EQ( 8065 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 8066 "(\n" 8067 " \"x\t\");", 8068 format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 8069 "aaaaaaa(" 8070 "\"x\t\");")); 8071 } 8072 8073 TEST_F(FormatTest, BreaksWideAndNSStringLiterals) { 8074 EXPECT_EQ( 8075 "u8\"utf8 string \"\n" 8076 "u8\"literal\";", 8077 format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16))); 8078 EXPECT_EQ( 8079 "u\"utf16 string \"\n" 8080 "u\"literal\";", 8081 format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16))); 8082 EXPECT_EQ( 8083 "U\"utf32 string \"\n" 8084 "U\"literal\";", 8085 format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16))); 8086 EXPECT_EQ("L\"wide string \"\n" 8087 "L\"literal\";", 8088 format("L\"wide string literal\";", getGoogleStyleWithColumns(16))); 8089 EXPECT_EQ("@\"NSString \"\n" 8090 "@\"literal\";", 8091 format("@\"NSString literal\";", getGoogleStyleWithColumns(19))); 8092 8093 // This input makes clang-format try to split the incomplete unicode escape 8094 // sequence, which used to lead to a crasher. 8095 verifyNoCrash( 8096 "aaaaaaaaaaaaaaaaaaaa = L\"\\udff\"'; // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 8097 getLLVMStyleWithColumns(60)); 8098 } 8099 8100 TEST_F(FormatTest, DoesNotBreakRawStringLiterals) { 8101 FormatStyle Style = getGoogleStyleWithColumns(15); 8102 EXPECT_EQ("R\"x(raw literal)x\";", format("R\"x(raw literal)x\";", Style)); 8103 EXPECT_EQ("uR\"x(raw literal)x\";", format("uR\"x(raw literal)x\";", Style)); 8104 EXPECT_EQ("LR\"x(raw literal)x\";", format("LR\"x(raw literal)x\";", Style)); 8105 EXPECT_EQ("UR\"x(raw literal)x\";", format("UR\"x(raw literal)x\";", Style)); 8106 EXPECT_EQ("u8R\"x(raw literal)x\";", 8107 format("u8R\"x(raw literal)x\";", Style)); 8108 } 8109 8110 TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) { 8111 FormatStyle Style = getLLVMStyleWithColumns(20); 8112 EXPECT_EQ( 8113 "_T(\"aaaaaaaaaaaaaa\")\n" 8114 "_T(\"aaaaaaaaaaaaaa\")\n" 8115 "_T(\"aaaaaaaaaaaa\")", 8116 format(" _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style)); 8117 EXPECT_EQ("f(x, _T(\"aaaaaaaaa\")\n" 8118 " _T(\"aaaaaa\"),\n" 8119 " z);", 8120 format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style)); 8121 8122 // FIXME: Handle embedded spaces in one iteration. 8123 // EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n" 8124 // "_T(\"aaaaaaaaaaaaa\")\n" 8125 // "_T(\"aaaaaaaaaaaaa\")\n" 8126 // "_T(\"a\")", 8127 // format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 8128 // getLLVMStyleWithColumns(20))); 8129 EXPECT_EQ( 8130 "_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 8131 format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style)); 8132 EXPECT_EQ("f(\n" 8133 "#if !TEST\n" 8134 " _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n" 8135 "#endif\n" 8136 " );", 8137 format("f(\n" 8138 "#if !TEST\n" 8139 "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n" 8140 "#endif\n" 8141 ");")); 8142 EXPECT_EQ("f(\n" 8143 "\n" 8144 " _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));", 8145 format("f(\n" 8146 "\n" 8147 "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));")); 8148 } 8149 8150 TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) { 8151 EXPECT_EQ( 8152 "aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 8153 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 8154 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 8155 format("aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 8156 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 8157 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";")); 8158 } 8159 8160 TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) { 8161 EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);", 8162 format("f(g(R\"x(raw literal)x\", a), b);", getGoogleStyle())); 8163 EXPECT_EQ("fffffffffff(g(R\"x(\n" 8164 "multiline raw string literal xxxxxxxxxxxxxx\n" 8165 ")x\",\n" 8166 " a),\n" 8167 " b);", 8168 format("fffffffffff(g(R\"x(\n" 8169 "multiline raw string literal xxxxxxxxxxxxxx\n" 8170 ")x\", a), b);", 8171 getGoogleStyleWithColumns(20))); 8172 EXPECT_EQ("fffffffffff(\n" 8173 " g(R\"x(qqq\n" 8174 "multiline raw string literal xxxxxxxxxxxxxx\n" 8175 ")x\",\n" 8176 " a),\n" 8177 " b);", 8178 format("fffffffffff(g(R\"x(qqq\n" 8179 "multiline raw string literal xxxxxxxxxxxxxx\n" 8180 ")x\", a), b);", 8181 getGoogleStyleWithColumns(20))); 8182 8183 EXPECT_EQ("fffffffffff(R\"x(\n" 8184 "multiline raw string literal xxxxxxxxxxxxxx\n" 8185 ")x\");", 8186 format("fffffffffff(R\"x(\n" 8187 "multiline raw string literal xxxxxxxxxxxxxx\n" 8188 ")x\");", 8189 getGoogleStyleWithColumns(20))); 8190 EXPECT_EQ("fffffffffff(R\"x(\n" 8191 "multiline raw string literal xxxxxxxxxxxxxx\n" 8192 ")x\" + bbbbbb);", 8193 format("fffffffffff(R\"x(\n" 8194 "multiline raw string literal xxxxxxxxxxxxxx\n" 8195 ")x\" + bbbbbb);", 8196 getGoogleStyleWithColumns(20))); 8197 EXPECT_EQ("fffffffffff(\n" 8198 " R\"x(\n" 8199 "multiline raw string literal xxxxxxxxxxxxxx\n" 8200 ")x\" +\n" 8201 " bbbbbb);", 8202 format("fffffffffff(\n" 8203 " R\"x(\n" 8204 "multiline raw string literal xxxxxxxxxxxxxx\n" 8205 ")x\" + bbbbbb);", 8206 getGoogleStyleWithColumns(20))); 8207 } 8208 8209 TEST_F(FormatTest, SkipsUnknownStringLiterals) { 8210 verifyFormat("string a = \"unterminated;"); 8211 EXPECT_EQ("function(\"unterminated,\n" 8212 " OtherParameter);", 8213 format("function( \"unterminated,\n" 8214 " OtherParameter);")); 8215 } 8216 8217 TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) { 8218 FormatStyle Style = getLLVMStyle(); 8219 Style.Standard = FormatStyle::LS_Cpp03; 8220 EXPECT_EQ("#define x(_a) printf(\"foo\" _a);", 8221 format("#define x(_a) printf(\"foo\"_a);", Style)); 8222 } 8223 8224 TEST_F(FormatTest, UnderstandsCpp1y) { verifyFormat("int bi{1'000'000};"); } 8225 8226 TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) { 8227 EXPECT_EQ("someFunction(\"aaabbbcccd\"\n" 8228 " \"ddeeefff\");", 8229 format("someFunction(\"aaabbbcccdddeeefff\");", 8230 getLLVMStyleWithColumns(25))); 8231 EXPECT_EQ("someFunction1234567890(\n" 8232 " \"aaabbbcccdddeeefff\");", 8233 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 8234 getLLVMStyleWithColumns(26))); 8235 EXPECT_EQ("someFunction1234567890(\n" 8236 " \"aaabbbcccdddeeeff\"\n" 8237 " \"f\");", 8238 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 8239 getLLVMStyleWithColumns(25))); 8240 EXPECT_EQ("someFunction1234567890(\n" 8241 " \"aaabbbcccdddeeeff\"\n" 8242 " \"f\");", 8243 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 8244 getLLVMStyleWithColumns(24))); 8245 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 8246 " \"ddde \"\n" 8247 " \"efff\");", 8248 format("someFunction(\"aaabbbcc ddde efff\");", 8249 getLLVMStyleWithColumns(25))); 8250 EXPECT_EQ("someFunction(\"aaabbbccc \"\n" 8251 " \"ddeeefff\");", 8252 format("someFunction(\"aaabbbccc ddeeefff\");", 8253 getLLVMStyleWithColumns(25))); 8254 EXPECT_EQ("someFunction1234567890(\n" 8255 " \"aaabb \"\n" 8256 " \"cccdddeeefff\");", 8257 format("someFunction1234567890(\"aaabb cccdddeeefff\");", 8258 getLLVMStyleWithColumns(25))); 8259 EXPECT_EQ("#define A \\\n" 8260 " string s = \\\n" 8261 " \"123456789\" \\\n" 8262 " \"0\"; \\\n" 8263 " int i;", 8264 format("#define A string s = \"1234567890\"; int i;", 8265 getLLVMStyleWithColumns(20))); 8266 // FIXME: Put additional penalties on breaking at non-whitespace locations. 8267 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 8268 " \"dddeeeff\"\n" 8269 " \"f\");", 8270 format("someFunction(\"aaabbbcc dddeeefff\");", 8271 getLLVMStyleWithColumns(25))); 8272 } 8273 8274 TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) { 8275 EXPECT_EQ("\"\\a\"", format("\"\\a\"", getLLVMStyleWithColumns(3))); 8276 EXPECT_EQ("\"\\\"", format("\"\\\"", getLLVMStyleWithColumns(2))); 8277 EXPECT_EQ("\"test\"\n" 8278 "\"\\n\"", 8279 format("\"test\\n\"", getLLVMStyleWithColumns(7))); 8280 EXPECT_EQ("\"tes\\\\\"\n" 8281 "\"n\"", 8282 format("\"tes\\\\n\"", getLLVMStyleWithColumns(7))); 8283 EXPECT_EQ("\"\\\\\\\\\"\n" 8284 "\"\\n\"", 8285 format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7))); 8286 EXPECT_EQ("\"\\uff01\"", format("\"\\uff01\"", getLLVMStyleWithColumns(7))); 8287 EXPECT_EQ("\"\\uff01\"\n" 8288 "\"test\"", 8289 format("\"\\uff01test\"", getLLVMStyleWithColumns(8))); 8290 EXPECT_EQ("\"\\Uff01ff02\"", 8291 format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11))); 8292 EXPECT_EQ("\"\\x000000000001\"\n" 8293 "\"next\"", 8294 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16))); 8295 EXPECT_EQ("\"\\x000000000001next\"", 8296 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15))); 8297 EXPECT_EQ("\"\\x000000000001\"", 8298 format("\"\\x000000000001\"", getLLVMStyleWithColumns(7))); 8299 EXPECT_EQ("\"test\"\n" 8300 "\"\\000000\"\n" 8301 "\"000001\"", 8302 format("\"test\\000000000001\"", getLLVMStyleWithColumns(9))); 8303 EXPECT_EQ("\"test\\000\"\n" 8304 "\"00000000\"\n" 8305 "\"1\"", 8306 format("\"test\\000000000001\"", getLLVMStyleWithColumns(10))); 8307 } 8308 8309 TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) { 8310 verifyFormat("void f() {\n" 8311 " return g() {}\n" 8312 " void h() {}"); 8313 verifyFormat("int a[] = {void forgot_closing_brace(){f();\n" 8314 "g();\n" 8315 "}"); 8316 } 8317 8318 TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) { 8319 verifyFormat( 8320 "void f() { return C{param1, param2}.SomeCall(param1, param2); }"); 8321 } 8322 8323 TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) { 8324 verifyFormat("class X {\n" 8325 " void f() {\n" 8326 " }\n" 8327 "};", 8328 getLLVMStyleWithColumns(12)); 8329 } 8330 8331 TEST_F(FormatTest, ConfigurableIndentWidth) { 8332 FormatStyle EightIndent = getLLVMStyleWithColumns(18); 8333 EightIndent.IndentWidth = 8; 8334 EightIndent.ContinuationIndentWidth = 8; 8335 verifyFormat("void f() {\n" 8336 " someFunction();\n" 8337 " if (true) {\n" 8338 " f();\n" 8339 " }\n" 8340 "}", 8341 EightIndent); 8342 verifyFormat("class X {\n" 8343 " void f() {\n" 8344 " }\n" 8345 "};", 8346 EightIndent); 8347 verifyFormat("int x[] = {\n" 8348 " call(),\n" 8349 " call()};", 8350 EightIndent); 8351 } 8352 8353 TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) { 8354 verifyFormat("double\n" 8355 "f();", 8356 getLLVMStyleWithColumns(8)); 8357 } 8358 8359 TEST_F(FormatTest, ConfigurableUseOfTab) { 8360 FormatStyle Tab = getLLVMStyleWithColumns(42); 8361 Tab.IndentWidth = 8; 8362 Tab.UseTab = FormatStyle::UT_Always; 8363 Tab.AlignEscapedNewlinesLeft = true; 8364 8365 EXPECT_EQ("if (aaaaaaaa && // q\n" 8366 " bb)\t\t// w\n" 8367 "\t;", 8368 format("if (aaaaaaaa &&// q\n" 8369 "bb)// w\n" 8370 ";", 8371 Tab)); 8372 EXPECT_EQ("if (aaa && bbb) // w\n" 8373 "\t;", 8374 format("if(aaa&&bbb)// w\n" 8375 ";", 8376 Tab)); 8377 8378 verifyFormat("class X {\n" 8379 "\tvoid f() {\n" 8380 "\t\tsomeFunction(parameter1,\n" 8381 "\t\t\t parameter2);\n" 8382 "\t}\n" 8383 "};", 8384 Tab); 8385 verifyFormat("#define A \\\n" 8386 "\tvoid f() { \\\n" 8387 "\t\tsomeFunction( \\\n" 8388 "\t\t parameter1, \\\n" 8389 "\t\t parameter2); \\\n" 8390 "\t}", 8391 Tab); 8392 8393 Tab.TabWidth = 4; 8394 Tab.IndentWidth = 8; 8395 verifyFormat("class TabWidth4Indent8 {\n" 8396 "\t\tvoid f() {\n" 8397 "\t\t\t\tsomeFunction(parameter1,\n" 8398 "\t\t\t\t\t\t\t parameter2);\n" 8399 "\t\t}\n" 8400 "};", 8401 Tab); 8402 8403 Tab.TabWidth = 4; 8404 Tab.IndentWidth = 4; 8405 verifyFormat("class TabWidth4Indent4 {\n" 8406 "\tvoid f() {\n" 8407 "\t\tsomeFunction(parameter1,\n" 8408 "\t\t\t\t\t parameter2);\n" 8409 "\t}\n" 8410 "};", 8411 Tab); 8412 8413 Tab.TabWidth = 8; 8414 Tab.IndentWidth = 4; 8415 verifyFormat("class TabWidth8Indent4 {\n" 8416 " void f() {\n" 8417 "\tsomeFunction(parameter1,\n" 8418 "\t\t parameter2);\n" 8419 " }\n" 8420 "};", 8421 Tab); 8422 8423 Tab.TabWidth = 8; 8424 Tab.IndentWidth = 8; 8425 EXPECT_EQ("/*\n" 8426 "\t a\t\tcomment\n" 8427 "\t in multiple lines\n" 8428 " */", 8429 format(" /*\t \t \n" 8430 " \t \t a\t\tcomment\t \t\n" 8431 " \t \t in multiple lines\t\n" 8432 " \t */", 8433 Tab)); 8434 8435 Tab.UseTab = FormatStyle::UT_ForIndentation; 8436 verifyFormat("{\n" 8437 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8438 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8439 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8440 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8441 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8442 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8443 "};", 8444 Tab); 8445 verifyFormat("enum AA {\n" 8446 "\ta1, // Force multiple lines\n" 8447 "\ta2,\n" 8448 "\ta3\n" 8449 "};", 8450 Tab); 8451 EXPECT_EQ("if (aaaaaaaa && // q\n" 8452 " bb) // w\n" 8453 "\t;", 8454 format("if (aaaaaaaa &&// q\n" 8455 "bb)// w\n" 8456 ";", 8457 Tab)); 8458 verifyFormat("class X {\n" 8459 "\tvoid f() {\n" 8460 "\t\tsomeFunction(parameter1,\n" 8461 "\t\t parameter2);\n" 8462 "\t}\n" 8463 "};", 8464 Tab); 8465 verifyFormat("{\n" 8466 "\tQ(\n" 8467 "\t {\n" 8468 "\t\t int a;\n" 8469 "\t\t someFunction(aaaaaaaa,\n" 8470 "\t\t bbbbbbb);\n" 8471 "\t },\n" 8472 "\t p);\n" 8473 "}", 8474 Tab); 8475 EXPECT_EQ("{\n" 8476 "\t/* aaaa\n" 8477 "\t bbbb */\n" 8478 "}", 8479 format("{\n" 8480 "/* aaaa\n" 8481 " bbbb */\n" 8482 "}", 8483 Tab)); 8484 EXPECT_EQ("{\n" 8485 "\t/*\n" 8486 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8487 "\t bbbbbbbbbbbbb\n" 8488 "\t*/\n" 8489 "}", 8490 format("{\n" 8491 "/*\n" 8492 " aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8493 "*/\n" 8494 "}", 8495 Tab)); 8496 EXPECT_EQ("{\n" 8497 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8498 "\t// bbbbbbbbbbbbb\n" 8499 "}", 8500 format("{\n" 8501 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8502 "}", 8503 Tab)); 8504 EXPECT_EQ("{\n" 8505 "\t/*\n" 8506 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8507 "\t bbbbbbbbbbbbb\n" 8508 "\t*/\n" 8509 "}", 8510 format("{\n" 8511 "\t/*\n" 8512 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8513 "\t*/\n" 8514 "}", 8515 Tab)); 8516 EXPECT_EQ("{\n" 8517 "\t/*\n" 8518 "\n" 8519 "\t*/\n" 8520 "}", 8521 format("{\n" 8522 "\t/*\n" 8523 "\n" 8524 "\t*/\n" 8525 "}", 8526 Tab)); 8527 EXPECT_EQ("{\n" 8528 "\t/*\n" 8529 " asdf\n" 8530 "\t*/\n" 8531 "}", 8532 format("{\n" 8533 "\t/*\n" 8534 " asdf\n" 8535 "\t*/\n" 8536 "}", 8537 Tab)); 8538 8539 Tab.UseTab = FormatStyle::UT_Never; 8540 EXPECT_EQ("/*\n" 8541 " a\t\tcomment\n" 8542 " in multiple lines\n" 8543 " */", 8544 format(" /*\t \t \n" 8545 " \t \t a\t\tcomment\t \t\n" 8546 " \t \t in multiple lines\t\n" 8547 " \t */", 8548 Tab)); 8549 EXPECT_EQ("/* some\n" 8550 " comment */", 8551 format(" \t \t /* some\n" 8552 " \t \t comment */", 8553 Tab)); 8554 EXPECT_EQ("int a; /* some\n" 8555 " comment */", 8556 format(" \t \t int a; /* some\n" 8557 " \t \t comment */", 8558 Tab)); 8559 8560 EXPECT_EQ("int a; /* some\n" 8561 "comment */", 8562 format(" \t \t int\ta; /* some\n" 8563 " \t \t comment */", 8564 Tab)); 8565 EXPECT_EQ("f(\"\t\t\"); /* some\n" 8566 " comment */", 8567 format(" \t \t f(\"\t\t\"); /* some\n" 8568 " \t \t comment */", 8569 Tab)); 8570 EXPECT_EQ("{\n" 8571 " /*\n" 8572 " * Comment\n" 8573 " */\n" 8574 " int i;\n" 8575 "}", 8576 format("{\n" 8577 "\t/*\n" 8578 "\t * Comment\n" 8579 "\t */\n" 8580 "\t int i;\n" 8581 "}")); 8582 8583 Tab.UseTab = FormatStyle::UT_ForContinuationAndIndentation; 8584 Tab.TabWidth = 8; 8585 Tab.IndentWidth = 8; 8586 EXPECT_EQ("if (aaaaaaaa && // q\n" 8587 " bb) // w\n" 8588 "\t;", 8589 format("if (aaaaaaaa &&// q\n" 8590 "bb)// w\n" 8591 ";", 8592 Tab)); 8593 EXPECT_EQ("if (aaa && bbb) // w\n" 8594 "\t;", 8595 format("if(aaa&&bbb)// w\n" 8596 ";", 8597 Tab)); 8598 verifyFormat("class X {\n" 8599 "\tvoid f() {\n" 8600 "\t\tsomeFunction(parameter1,\n" 8601 "\t\t\t parameter2);\n" 8602 "\t}\n" 8603 "};", 8604 Tab); 8605 verifyFormat("#define A \\\n" 8606 "\tvoid f() { \\\n" 8607 "\t\tsomeFunction( \\\n" 8608 "\t\t parameter1, \\\n" 8609 "\t\t parameter2); \\\n" 8610 "\t}", 8611 Tab); 8612 Tab.TabWidth = 4; 8613 Tab.IndentWidth = 8; 8614 verifyFormat("class TabWidth4Indent8 {\n" 8615 "\t\tvoid f() {\n" 8616 "\t\t\t\tsomeFunction(parameter1,\n" 8617 "\t\t\t\t\t\t\t parameter2);\n" 8618 "\t\t}\n" 8619 "};", 8620 Tab); 8621 Tab.TabWidth = 4; 8622 Tab.IndentWidth = 4; 8623 verifyFormat("class TabWidth4Indent4 {\n" 8624 "\tvoid f() {\n" 8625 "\t\tsomeFunction(parameter1,\n" 8626 "\t\t\t\t\t parameter2);\n" 8627 "\t}\n" 8628 "};", 8629 Tab); 8630 Tab.TabWidth = 8; 8631 Tab.IndentWidth = 4; 8632 verifyFormat("class TabWidth8Indent4 {\n" 8633 " void f() {\n" 8634 "\tsomeFunction(parameter1,\n" 8635 "\t\t parameter2);\n" 8636 " }\n" 8637 "};", 8638 Tab); 8639 Tab.TabWidth = 8; 8640 Tab.IndentWidth = 8; 8641 EXPECT_EQ("/*\n" 8642 "\t a\t\tcomment\n" 8643 "\t in multiple lines\n" 8644 " */", 8645 format(" /*\t \t \n" 8646 " \t \t a\t\tcomment\t \t\n" 8647 " \t \t in multiple lines\t\n" 8648 " \t */", 8649 Tab)); 8650 verifyFormat("{\n" 8651 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8652 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8653 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8654 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8655 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8656 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 8657 "};", 8658 Tab); 8659 verifyFormat("enum AA {\n" 8660 "\ta1, // Force multiple lines\n" 8661 "\ta2,\n" 8662 "\ta3\n" 8663 "};", 8664 Tab); 8665 EXPECT_EQ("if (aaaaaaaa && // q\n" 8666 " bb) // w\n" 8667 "\t;", 8668 format("if (aaaaaaaa &&// q\n" 8669 "bb)// w\n" 8670 ";", 8671 Tab)); 8672 verifyFormat("class X {\n" 8673 "\tvoid f() {\n" 8674 "\t\tsomeFunction(parameter1,\n" 8675 "\t\t\t parameter2);\n" 8676 "\t}\n" 8677 "};", 8678 Tab); 8679 verifyFormat("{\n" 8680 "\tQ(\n" 8681 "\t {\n" 8682 "\t\t int a;\n" 8683 "\t\t someFunction(aaaaaaaa,\n" 8684 "\t\t\t\t bbbbbbb);\n" 8685 "\t },\n" 8686 "\t p);\n" 8687 "}", 8688 Tab); 8689 EXPECT_EQ("{\n" 8690 "\t/* aaaa\n" 8691 "\t bbbb */\n" 8692 "}", 8693 format("{\n" 8694 "/* aaaa\n" 8695 " bbbb */\n" 8696 "}", 8697 Tab)); 8698 EXPECT_EQ("{\n" 8699 "\t/*\n" 8700 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8701 "\t bbbbbbbbbbbbb\n" 8702 "\t*/\n" 8703 "}", 8704 format("{\n" 8705 "/*\n" 8706 " aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8707 "*/\n" 8708 "}", 8709 Tab)); 8710 EXPECT_EQ("{\n" 8711 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8712 "\t// bbbbbbbbbbbbb\n" 8713 "}", 8714 format("{\n" 8715 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8716 "}", 8717 Tab)); 8718 EXPECT_EQ("{\n" 8719 "\t/*\n" 8720 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8721 "\t bbbbbbbbbbbbb\n" 8722 "\t*/\n" 8723 "}", 8724 format("{\n" 8725 "\t/*\n" 8726 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8727 "\t*/\n" 8728 "}", 8729 Tab)); 8730 EXPECT_EQ("{\n" 8731 "\t/*\n" 8732 "\n" 8733 "\t*/\n" 8734 "}", 8735 format("{\n" 8736 "\t/*\n" 8737 "\n" 8738 "\t*/\n" 8739 "}", 8740 Tab)); 8741 EXPECT_EQ("{\n" 8742 "\t/*\n" 8743 " asdf\n" 8744 "\t*/\n" 8745 "}", 8746 format("{\n" 8747 "\t/*\n" 8748 " asdf\n" 8749 "\t*/\n" 8750 "}", 8751 Tab)); 8752 EXPECT_EQ("/*\n" 8753 "\t a\t\tcomment\n" 8754 "\t in multiple lines\n" 8755 " */", 8756 format(" /*\t \t \n" 8757 " \t \t a\t\tcomment\t \t\n" 8758 " \t \t in multiple lines\t\n" 8759 " \t */", 8760 Tab)); 8761 EXPECT_EQ("/* some\n" 8762 " comment */", 8763 format(" \t \t /* some\n" 8764 " \t \t comment */", 8765 Tab)); 8766 EXPECT_EQ("int a; /* some\n" 8767 " comment */", 8768 format(" \t \t int a; /* some\n" 8769 " \t \t comment */", 8770 Tab)); 8771 EXPECT_EQ("int a; /* some\n" 8772 "comment */", 8773 format(" \t \t int\ta; /* some\n" 8774 " \t \t comment */", 8775 Tab)); 8776 EXPECT_EQ("f(\"\t\t\"); /* some\n" 8777 " comment */", 8778 format(" \t \t f(\"\t\t\"); /* some\n" 8779 " \t \t comment */", 8780 Tab)); 8781 EXPECT_EQ("{\n" 8782 " /*\n" 8783 " * Comment\n" 8784 " */\n" 8785 " int i;\n" 8786 "}", 8787 format("{\n" 8788 "\t/*\n" 8789 "\t * Comment\n" 8790 "\t */\n" 8791 "\t int i;\n" 8792 "}")); 8793 Tab.AlignConsecutiveAssignments = true; 8794 Tab.AlignConsecutiveDeclarations = true; 8795 Tab.TabWidth = 4; 8796 Tab.IndentWidth = 4; 8797 verifyFormat("class Assign {\n" 8798 "\tvoid f() {\n" 8799 "\t\tint x = 123;\n" 8800 "\t\tint random = 4;\n" 8801 "\t\tstd::string alphabet =\n" 8802 "\t\t\t\"abcdefghijklmnopqrstuvwxyz\";\n" 8803 "\t}\n" 8804 "};", 8805 Tab); 8806 } 8807 8808 TEST_F(FormatTest, CalculatesOriginalColumn) { 8809 EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8810 "q\"; /* some\n" 8811 " comment */", 8812 format(" \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8813 "q\"; /* some\n" 8814 " comment */", 8815 getLLVMStyle())); 8816 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 8817 "/* some\n" 8818 " comment */", 8819 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 8820 " /* some\n" 8821 " comment */", 8822 getLLVMStyle())); 8823 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8824 "qqq\n" 8825 "/* some\n" 8826 " comment */", 8827 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8828 "qqq\n" 8829 " /* some\n" 8830 " comment */", 8831 getLLVMStyle())); 8832 EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8833 "wwww; /* some\n" 8834 " comment */", 8835 format(" inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8836 "wwww; /* some\n" 8837 " comment */", 8838 getLLVMStyle())); 8839 } 8840 8841 TEST_F(FormatTest, ConfigurableSpaceBeforeParens) { 8842 FormatStyle NoSpace = getLLVMStyle(); 8843 NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never; 8844 8845 verifyFormat("while(true)\n" 8846 " continue;", 8847 NoSpace); 8848 verifyFormat("for(;;)\n" 8849 " continue;", 8850 NoSpace); 8851 verifyFormat("if(true)\n" 8852 " f();\n" 8853 "else if(true)\n" 8854 " f();", 8855 NoSpace); 8856 verifyFormat("do {\n" 8857 " do_something();\n" 8858 "} while(something());", 8859 NoSpace); 8860 verifyFormat("switch(x) {\n" 8861 "default:\n" 8862 " break;\n" 8863 "}", 8864 NoSpace); 8865 verifyFormat("auto i = std::make_unique<int>(5);", NoSpace); 8866 verifyFormat("size_t x = sizeof(x);", NoSpace); 8867 verifyFormat("auto f(int x) -> decltype(x);", NoSpace); 8868 verifyFormat("int f(T x) noexcept(x.create());", NoSpace); 8869 verifyFormat("alignas(128) char a[128];", NoSpace); 8870 verifyFormat("size_t x = alignof(MyType);", NoSpace); 8871 verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace); 8872 verifyFormat("int f() throw(Deprecated);", NoSpace); 8873 verifyFormat("typedef void (*cb)(int);", NoSpace); 8874 verifyFormat("T A::operator()();", NoSpace); 8875 verifyFormat("X A::operator++(T);", NoSpace); 8876 8877 FormatStyle Space = getLLVMStyle(); 8878 Space.SpaceBeforeParens = FormatStyle::SBPO_Always; 8879 8880 verifyFormat("int f ();", Space); 8881 verifyFormat("void f (int a, T b) {\n" 8882 " while (true)\n" 8883 " continue;\n" 8884 "}", 8885 Space); 8886 verifyFormat("if (true)\n" 8887 " f ();\n" 8888 "else if (true)\n" 8889 " f ();", 8890 Space); 8891 verifyFormat("do {\n" 8892 " do_something ();\n" 8893 "} while (something ());", 8894 Space); 8895 verifyFormat("switch (x) {\n" 8896 "default:\n" 8897 " break;\n" 8898 "}", 8899 Space); 8900 verifyFormat("A::A () : a (1) {}", Space); 8901 verifyFormat("void f () __attribute__ ((asdf));", Space); 8902 verifyFormat("*(&a + 1);\n" 8903 "&((&a)[1]);\n" 8904 "a[(b + c) * d];\n" 8905 "(((a + 1) * 2) + 3) * 4;", 8906 Space); 8907 verifyFormat("#define A(x) x", Space); 8908 verifyFormat("#define A (x) x", Space); 8909 verifyFormat("#if defined(x)\n" 8910 "#endif", 8911 Space); 8912 verifyFormat("auto i = std::make_unique<int> (5);", Space); 8913 verifyFormat("size_t x = sizeof (x);", Space); 8914 verifyFormat("auto f (int x) -> decltype (x);", Space); 8915 verifyFormat("int f (T x) noexcept (x.create ());", Space); 8916 verifyFormat("alignas (128) char a[128];", Space); 8917 verifyFormat("size_t x = alignof (MyType);", Space); 8918 verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space); 8919 verifyFormat("int f () throw (Deprecated);", Space); 8920 verifyFormat("typedef void (*cb) (int);", Space); 8921 verifyFormat("T A::operator() ();", Space); 8922 verifyFormat("X A::operator++ (T);", Space); 8923 } 8924 8925 TEST_F(FormatTest, ConfigurableSpacesInParentheses) { 8926 FormatStyle Spaces = getLLVMStyle(); 8927 8928 Spaces.SpacesInParentheses = true; 8929 verifyFormat("call( x, y, z );", Spaces); 8930 verifyFormat("call();", Spaces); 8931 verifyFormat("std::function<void( int, int )> callback;", Spaces); 8932 verifyFormat("void inFunction() { std::function<void( int, int )> fct; }", 8933 Spaces); 8934 verifyFormat("while ( (bool)1 )\n" 8935 " continue;", 8936 Spaces); 8937 verifyFormat("for ( ;; )\n" 8938 " continue;", 8939 Spaces); 8940 verifyFormat("if ( true )\n" 8941 " f();\n" 8942 "else if ( true )\n" 8943 " f();", 8944 Spaces); 8945 verifyFormat("do {\n" 8946 " do_something( (int)i );\n" 8947 "} while ( something() );", 8948 Spaces); 8949 verifyFormat("switch ( x ) {\n" 8950 "default:\n" 8951 " break;\n" 8952 "}", 8953 Spaces); 8954 8955 Spaces.SpacesInParentheses = false; 8956 Spaces.SpacesInCStyleCastParentheses = true; 8957 verifyFormat("Type *A = ( Type * )P;", Spaces); 8958 verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces); 8959 verifyFormat("x = ( int32 )y;", Spaces); 8960 verifyFormat("int a = ( int )(2.0f);", Spaces); 8961 verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces); 8962 verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces); 8963 verifyFormat("#define x (( int )-1)", Spaces); 8964 8965 // Run the first set of tests again with: 8966 Spaces.SpacesInParentheses = false; 8967 Spaces.SpaceInEmptyParentheses = true; 8968 Spaces.SpacesInCStyleCastParentheses = true; 8969 verifyFormat("call(x, y, z);", Spaces); 8970 verifyFormat("call( );", Spaces); 8971 verifyFormat("std::function<void(int, int)> callback;", Spaces); 8972 verifyFormat("while (( bool )1)\n" 8973 " continue;", 8974 Spaces); 8975 verifyFormat("for (;;)\n" 8976 " continue;", 8977 Spaces); 8978 verifyFormat("if (true)\n" 8979 " f( );\n" 8980 "else if (true)\n" 8981 " f( );", 8982 Spaces); 8983 verifyFormat("do {\n" 8984 " do_something(( int )i);\n" 8985 "} while (something( ));", 8986 Spaces); 8987 verifyFormat("switch (x) {\n" 8988 "default:\n" 8989 " break;\n" 8990 "}", 8991 Spaces); 8992 8993 // Run the first set of tests again with: 8994 Spaces.SpaceAfterCStyleCast = true; 8995 verifyFormat("call(x, y, z);", Spaces); 8996 verifyFormat("call( );", Spaces); 8997 verifyFormat("std::function<void(int, int)> callback;", Spaces); 8998 verifyFormat("while (( bool ) 1)\n" 8999 " continue;", 9000 Spaces); 9001 verifyFormat("for (;;)\n" 9002 " continue;", 9003 Spaces); 9004 verifyFormat("if (true)\n" 9005 " f( );\n" 9006 "else if (true)\n" 9007 " f( );", 9008 Spaces); 9009 verifyFormat("do {\n" 9010 " do_something(( int ) i);\n" 9011 "} while (something( ));", 9012 Spaces); 9013 verifyFormat("switch (x) {\n" 9014 "default:\n" 9015 " break;\n" 9016 "}", 9017 Spaces); 9018 9019 // Run subset of tests again with: 9020 Spaces.SpacesInCStyleCastParentheses = false; 9021 Spaces.SpaceAfterCStyleCast = true; 9022 verifyFormat("while ((bool) 1)\n" 9023 " continue;", 9024 Spaces); 9025 verifyFormat("do {\n" 9026 " do_something((int) i);\n" 9027 "} while (something( ));", 9028 Spaces); 9029 } 9030 9031 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) { 9032 verifyFormat("int a[5];"); 9033 verifyFormat("a[3] += 42;"); 9034 9035 FormatStyle Spaces = getLLVMStyle(); 9036 Spaces.SpacesInSquareBrackets = true; 9037 // Lambdas unchanged. 9038 verifyFormat("int c = []() -> int { return 2; }();\n", Spaces); 9039 verifyFormat("return [i, args...] {};", Spaces); 9040 9041 // Not lambdas. 9042 verifyFormat("int a[ 5 ];", Spaces); 9043 verifyFormat("a[ 3 ] += 42;", Spaces); 9044 verifyFormat("constexpr char hello[]{\"hello\"};", Spaces); 9045 verifyFormat("double &operator[](int i) { return 0; }\n" 9046 "int i;", 9047 Spaces); 9048 verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces); 9049 verifyFormat("int i = a[ a ][ a ]->f();", Spaces); 9050 verifyFormat("int i = (*b)[ a ]->f();", Spaces); 9051 } 9052 9053 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) { 9054 verifyFormat("int a = 5;"); 9055 verifyFormat("a += 42;"); 9056 verifyFormat("a or_eq 8;"); 9057 9058 FormatStyle Spaces = getLLVMStyle(); 9059 Spaces.SpaceBeforeAssignmentOperators = false; 9060 verifyFormat("int a= 5;", Spaces); 9061 verifyFormat("a+= 42;", Spaces); 9062 verifyFormat("a or_eq 8;", Spaces); 9063 } 9064 9065 TEST_F(FormatTest, AlignConsecutiveAssignments) { 9066 FormatStyle Alignment = getLLVMStyle(); 9067 Alignment.AlignConsecutiveAssignments = false; 9068 verifyFormat("int a = 5;\n" 9069 "int oneTwoThree = 123;", 9070 Alignment); 9071 verifyFormat("int a = 5;\n" 9072 "int oneTwoThree = 123;", 9073 Alignment); 9074 9075 Alignment.AlignConsecutiveAssignments = true; 9076 verifyFormat("int a = 5;\n" 9077 "int oneTwoThree = 123;", 9078 Alignment); 9079 verifyFormat("int a = method();\n" 9080 "int oneTwoThree = 133;", 9081 Alignment); 9082 verifyFormat("a &= 5;\n" 9083 "bcd *= 5;\n" 9084 "ghtyf += 5;\n" 9085 "dvfvdb -= 5;\n" 9086 "a /= 5;\n" 9087 "vdsvsv %= 5;\n" 9088 "sfdbddfbdfbb ^= 5;\n" 9089 "dvsdsv |= 5;\n" 9090 "int dsvvdvsdvvv = 123;", 9091 Alignment); 9092 verifyFormat("int i = 1, j = 10;\n" 9093 "something = 2000;", 9094 Alignment); 9095 verifyFormat("something = 2000;\n" 9096 "int i = 1, j = 10;\n", 9097 Alignment); 9098 verifyFormat("something = 2000;\n" 9099 "another = 911;\n" 9100 "int i = 1, j = 10;\n" 9101 "oneMore = 1;\n" 9102 "i = 2;", 9103 Alignment); 9104 verifyFormat("int a = 5;\n" 9105 "int one = 1;\n" 9106 "method();\n" 9107 "int oneTwoThree = 123;\n" 9108 "int oneTwo = 12;", 9109 Alignment); 9110 verifyFormat("int oneTwoThree = 123;\n" 9111 "int oneTwo = 12;\n" 9112 "method();\n", 9113 Alignment); 9114 verifyFormat("int oneTwoThree = 123; // comment\n" 9115 "int oneTwo = 12; // comment", 9116 Alignment); 9117 EXPECT_EQ("int a = 5;\n" 9118 "\n" 9119 "int oneTwoThree = 123;", 9120 format("int a = 5;\n" 9121 "\n" 9122 "int oneTwoThree= 123;", 9123 Alignment)); 9124 EXPECT_EQ("int a = 5;\n" 9125 "int one = 1;\n" 9126 "\n" 9127 "int oneTwoThree = 123;", 9128 format("int a = 5;\n" 9129 "int one = 1;\n" 9130 "\n" 9131 "int oneTwoThree = 123;", 9132 Alignment)); 9133 EXPECT_EQ("int a = 5;\n" 9134 "int one = 1;\n" 9135 "\n" 9136 "int oneTwoThree = 123;\n" 9137 "int oneTwo = 12;", 9138 format("int a = 5;\n" 9139 "int one = 1;\n" 9140 "\n" 9141 "int oneTwoThree = 123;\n" 9142 "int oneTwo = 12;", 9143 Alignment)); 9144 Alignment.AlignEscapedNewlinesLeft = true; 9145 verifyFormat("#define A \\\n" 9146 " int aaaa = 12; \\\n" 9147 " int b = 23; \\\n" 9148 " int ccc = 234; \\\n" 9149 " int dddddddddd = 2345;", 9150 Alignment); 9151 Alignment.AlignEscapedNewlinesLeft = false; 9152 verifyFormat("#define A " 9153 " \\\n" 9154 " int aaaa = 12; " 9155 " \\\n" 9156 " int b = 23; " 9157 " \\\n" 9158 " int ccc = 234; " 9159 " \\\n" 9160 " int dddddddddd = 2345;", 9161 Alignment); 9162 verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int " 9163 "k = 4, int l = 5,\n" 9164 " int m = 6) {\n" 9165 " int j = 10;\n" 9166 " otherThing = 1;\n" 9167 "}", 9168 Alignment); 9169 verifyFormat("void SomeFunction(int parameter = 0) {\n" 9170 " int i = 1;\n" 9171 " int j = 2;\n" 9172 " int big = 10000;\n" 9173 "}", 9174 Alignment); 9175 verifyFormat("class C {\n" 9176 "public:\n" 9177 " int i = 1;\n" 9178 " virtual void f() = 0;\n" 9179 "};", 9180 Alignment); 9181 verifyFormat("int i = 1;\n" 9182 "if (SomeType t = getSomething()) {\n" 9183 "}\n" 9184 "int j = 2;\n" 9185 "int big = 10000;", 9186 Alignment); 9187 verifyFormat("int j = 7;\n" 9188 "for (int k = 0; k < N; ++k) {\n" 9189 "}\n" 9190 "int j = 2;\n" 9191 "int big = 10000;\n" 9192 "}", 9193 Alignment); 9194 Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 9195 verifyFormat("int i = 1;\n" 9196 "LooooooooooongType loooooooooooooooooooooongVariable\n" 9197 " = someLooooooooooooooooongFunction();\n" 9198 "int j = 2;", 9199 Alignment); 9200 Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None; 9201 verifyFormat("int i = 1;\n" 9202 "LooooooooooongType loooooooooooooooooooooongVariable =\n" 9203 " someLooooooooooooooooongFunction();\n" 9204 "int j = 2;", 9205 Alignment); 9206 9207 verifyFormat("auto lambda = []() {\n" 9208 " auto i = 0;\n" 9209 " return 0;\n" 9210 "};\n" 9211 "int i = 0;\n" 9212 "auto v = type{\n" 9213 " i = 1, //\n" 9214 " (i = 2), //\n" 9215 " i = 3 //\n" 9216 "};", 9217 Alignment); 9218 9219 // FIXME: Should align all three assignments 9220 verifyFormat( 9221 "int i = 1;\n" 9222 "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n" 9223 " loooooooooooooooooooooongParameterB);\n" 9224 "int j = 2;", 9225 Alignment); 9226 9227 verifyFormat("template <typename T, typename T_0 = very_long_type_name_0,\n" 9228 " typename B = very_long_type_name_1,\n" 9229 " typename T_2 = very_long_type_name_2>\n" 9230 "auto foo() {}\n", 9231 Alignment); 9232 verifyFormat("int a, b = 1;\n" 9233 "int c = 2;\n" 9234 "int dd = 3;\n", 9235 Alignment); 9236 verifyFormat("int aa = ((1 > 2) ? 3 : 4);\n" 9237 "float b[1][] = {{3.f}};\n", 9238 Alignment); 9239 } 9240 9241 TEST_F(FormatTest, AlignConsecutiveDeclarations) { 9242 FormatStyle Alignment = getLLVMStyle(); 9243 Alignment.AlignConsecutiveDeclarations = false; 9244 verifyFormat("float const a = 5;\n" 9245 "int oneTwoThree = 123;", 9246 Alignment); 9247 verifyFormat("int a = 5;\n" 9248 "float const oneTwoThree = 123;", 9249 Alignment); 9250 9251 Alignment.AlignConsecutiveDeclarations = true; 9252 verifyFormat("float const a = 5;\n" 9253 "int oneTwoThree = 123;", 9254 Alignment); 9255 verifyFormat("int a = method();\n" 9256 "float const oneTwoThree = 133;", 9257 Alignment); 9258 verifyFormat("int i = 1, j = 10;\n" 9259 "something = 2000;", 9260 Alignment); 9261 verifyFormat("something = 2000;\n" 9262 "int i = 1, j = 10;\n", 9263 Alignment); 9264 verifyFormat("float something = 2000;\n" 9265 "double another = 911;\n" 9266 "int i = 1, j = 10;\n" 9267 "const int *oneMore = 1;\n" 9268 "unsigned i = 2;", 9269 Alignment); 9270 verifyFormat("float a = 5;\n" 9271 "int one = 1;\n" 9272 "method();\n" 9273 "const double oneTwoThree = 123;\n" 9274 "const unsigned int oneTwo = 12;", 9275 Alignment); 9276 verifyFormat("int oneTwoThree{0}; // comment\n" 9277 "unsigned oneTwo; // comment", 9278 Alignment); 9279 EXPECT_EQ("float const a = 5;\n" 9280 "\n" 9281 "int oneTwoThree = 123;", 9282 format("float const a = 5;\n" 9283 "\n" 9284 "int oneTwoThree= 123;", 9285 Alignment)); 9286 EXPECT_EQ("float a = 5;\n" 9287 "int one = 1;\n" 9288 "\n" 9289 "unsigned oneTwoThree = 123;", 9290 format("float a = 5;\n" 9291 "int one = 1;\n" 9292 "\n" 9293 "unsigned oneTwoThree = 123;", 9294 Alignment)); 9295 EXPECT_EQ("float a = 5;\n" 9296 "int one = 1;\n" 9297 "\n" 9298 "unsigned oneTwoThree = 123;\n" 9299 "int oneTwo = 12;", 9300 format("float a = 5;\n" 9301 "int one = 1;\n" 9302 "\n" 9303 "unsigned oneTwoThree = 123;\n" 9304 "int oneTwo = 12;", 9305 Alignment)); 9306 Alignment.AlignConsecutiveAssignments = true; 9307 verifyFormat("float something = 2000;\n" 9308 "double another = 911;\n" 9309 "int i = 1, j = 10;\n" 9310 "const int *oneMore = 1;\n" 9311 "unsigned i = 2;", 9312 Alignment); 9313 verifyFormat("int oneTwoThree = {0}; // comment\n" 9314 "unsigned oneTwo = 0; // comment", 9315 Alignment); 9316 EXPECT_EQ("void SomeFunction(int parameter = 0) {\n" 9317 " int const i = 1;\n" 9318 " int * j = 2;\n" 9319 " int big = 10000;\n" 9320 "\n" 9321 " unsigned oneTwoThree = 123;\n" 9322 " int oneTwo = 12;\n" 9323 " method();\n" 9324 " float k = 2;\n" 9325 " int ll = 10000;\n" 9326 "}", 9327 format("void SomeFunction(int parameter= 0) {\n" 9328 " int const i= 1;\n" 9329 " int *j=2;\n" 9330 " int big = 10000;\n" 9331 "\n" 9332 "unsigned oneTwoThree =123;\n" 9333 "int oneTwo = 12;\n" 9334 " method();\n" 9335 "float k= 2;\n" 9336 "int ll=10000;\n" 9337 "}", 9338 Alignment)); 9339 Alignment.AlignConsecutiveAssignments = false; 9340 Alignment.AlignEscapedNewlinesLeft = true; 9341 verifyFormat("#define A \\\n" 9342 " int aaaa = 12; \\\n" 9343 " float b = 23; \\\n" 9344 " const int ccc = 234; \\\n" 9345 " unsigned dddddddddd = 2345;", 9346 Alignment); 9347 Alignment.AlignEscapedNewlinesLeft = false; 9348 Alignment.ColumnLimit = 30; 9349 verifyFormat("#define A \\\n" 9350 " int aaaa = 12; \\\n" 9351 " float b = 23; \\\n" 9352 " const int ccc = 234; \\\n" 9353 " int dddddddddd = 2345;", 9354 Alignment); 9355 Alignment.ColumnLimit = 80; 9356 verifyFormat("void SomeFunction(int parameter = 1, int i = 2, int j = 3, int " 9357 "k = 4, int l = 5,\n" 9358 " int m = 6) {\n" 9359 " const int j = 10;\n" 9360 " otherThing = 1;\n" 9361 "}", 9362 Alignment); 9363 verifyFormat("void SomeFunction(int parameter = 0) {\n" 9364 " int const i = 1;\n" 9365 " int * j = 2;\n" 9366 " int big = 10000;\n" 9367 "}", 9368 Alignment); 9369 verifyFormat("class C {\n" 9370 "public:\n" 9371 " int i = 1;\n" 9372 " virtual void f() = 0;\n" 9373 "};", 9374 Alignment); 9375 verifyFormat("float i = 1;\n" 9376 "if (SomeType t = getSomething()) {\n" 9377 "}\n" 9378 "const unsigned j = 2;\n" 9379 "int big = 10000;", 9380 Alignment); 9381 verifyFormat("float j = 7;\n" 9382 "for (int k = 0; k < N; ++k) {\n" 9383 "}\n" 9384 "unsigned j = 2;\n" 9385 "int big = 10000;\n" 9386 "}", 9387 Alignment); 9388 Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 9389 verifyFormat("float i = 1;\n" 9390 "LooooooooooongType loooooooooooooooooooooongVariable\n" 9391 " = someLooooooooooooooooongFunction();\n" 9392 "int j = 2;", 9393 Alignment); 9394 Alignment.BreakBeforeBinaryOperators = FormatStyle::BOS_None; 9395 verifyFormat("int i = 1;\n" 9396 "LooooooooooongType loooooooooooooooooooooongVariable =\n" 9397 " someLooooooooooooooooongFunction();\n" 9398 "int j = 2;", 9399 Alignment); 9400 9401 Alignment.AlignConsecutiveAssignments = true; 9402 verifyFormat("auto lambda = []() {\n" 9403 " auto ii = 0;\n" 9404 " float j = 0;\n" 9405 " return 0;\n" 9406 "};\n" 9407 "int i = 0;\n" 9408 "float i2 = 0;\n" 9409 "auto v = type{\n" 9410 " i = 1, //\n" 9411 " (i = 2), //\n" 9412 " i = 3 //\n" 9413 "};", 9414 Alignment); 9415 Alignment.AlignConsecutiveAssignments = false; 9416 9417 // FIXME: Should align all three declarations 9418 verifyFormat( 9419 "int i = 1;\n" 9420 "SomeType a = SomeFunction(looooooooooooooooooooooongParameterA,\n" 9421 " loooooooooooooooooooooongParameterB);\n" 9422 "int j = 2;", 9423 Alignment); 9424 9425 // Test interactions with ColumnLimit and AlignConsecutiveAssignments: 9426 // We expect declarations and assignments to align, as long as it doesn't 9427 // exceed the column limit, starting a new alignemnt sequence whenever it 9428 // happens. 9429 Alignment.AlignConsecutiveAssignments = true; 9430 Alignment.ColumnLimit = 30; 9431 verifyFormat("float ii = 1;\n" 9432 "unsigned j = 2;\n" 9433 "int someVerylongVariable = 1;\n" 9434 "AnotherLongType ll = 123456;\n" 9435 "VeryVeryLongType k = 2;\n" 9436 "int myvar = 1;", 9437 Alignment); 9438 Alignment.ColumnLimit = 80; 9439 Alignment.AlignConsecutiveAssignments = false; 9440 9441 verifyFormat( 9442 "template <typename LongTemplate, typename VeryLongTemplateTypeName,\n" 9443 " typename LongType, typename B>\n" 9444 "auto foo() {}\n", 9445 Alignment); 9446 verifyFormat("float a, b = 1;\n" 9447 "int c = 2;\n" 9448 "int dd = 3;\n", 9449 Alignment); 9450 verifyFormat("int aa = ((1 > 2) ? 3 : 4);\n" 9451 "float b[1][] = {{3.f}};\n", 9452 Alignment); 9453 Alignment.AlignConsecutiveAssignments = true; 9454 verifyFormat("float a, b = 1;\n" 9455 "int c = 2;\n" 9456 "int dd = 3;\n", 9457 Alignment); 9458 verifyFormat("int aa = ((1 > 2) ? 3 : 4);\n" 9459 "float b[1][] = {{3.f}};\n", 9460 Alignment); 9461 Alignment.AlignConsecutiveAssignments = false; 9462 9463 Alignment.ColumnLimit = 30; 9464 Alignment.BinPackParameters = false; 9465 verifyFormat("void foo(float a,\n" 9466 " float b,\n" 9467 " int c,\n" 9468 " uint32_t *d) {\n" 9469 " int * e = 0;\n" 9470 " float f = 0;\n" 9471 " double g = 0;\n" 9472 "}\n" 9473 "void bar(ino_t a,\n" 9474 " int b,\n" 9475 " uint32_t *c,\n" 9476 " bool d) {}\n", 9477 Alignment); 9478 Alignment.BinPackParameters = true; 9479 Alignment.ColumnLimit = 80; 9480 } 9481 9482 TEST_F(FormatTest, LinuxBraceBreaking) { 9483 FormatStyle LinuxBraceStyle = getLLVMStyle(); 9484 LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux; 9485 verifyFormat("namespace a\n" 9486 "{\n" 9487 "class A\n" 9488 "{\n" 9489 " void f()\n" 9490 " {\n" 9491 " if (true) {\n" 9492 " a();\n" 9493 " b();\n" 9494 " } else {\n" 9495 " a();\n" 9496 " }\n" 9497 " }\n" 9498 " void g() { return; }\n" 9499 "};\n" 9500 "struct B {\n" 9501 " int x;\n" 9502 "};\n" 9503 "}\n", 9504 LinuxBraceStyle); 9505 verifyFormat("enum X {\n" 9506 " Y = 0,\n" 9507 "}\n", 9508 LinuxBraceStyle); 9509 verifyFormat("struct S {\n" 9510 " int Type;\n" 9511 " union {\n" 9512 " int x;\n" 9513 " double y;\n" 9514 " } Value;\n" 9515 " class C\n" 9516 " {\n" 9517 " MyFavoriteType Value;\n" 9518 " } Class;\n" 9519 "}\n", 9520 LinuxBraceStyle); 9521 } 9522 9523 TEST_F(FormatTest, MozillaBraceBreaking) { 9524 FormatStyle MozillaBraceStyle = getLLVMStyle(); 9525 MozillaBraceStyle.BreakBeforeBraces = FormatStyle::BS_Mozilla; 9526 verifyFormat("namespace a {\n" 9527 "class A\n" 9528 "{\n" 9529 " void f()\n" 9530 " {\n" 9531 " if (true) {\n" 9532 " a();\n" 9533 " b();\n" 9534 " }\n" 9535 " }\n" 9536 " void g() { return; }\n" 9537 "};\n" 9538 "enum E\n" 9539 "{\n" 9540 " A,\n" 9541 " // foo\n" 9542 " B,\n" 9543 " C\n" 9544 "};\n" 9545 "struct B\n" 9546 "{\n" 9547 " int x;\n" 9548 "};\n" 9549 "}\n", 9550 MozillaBraceStyle); 9551 verifyFormat("struct S\n" 9552 "{\n" 9553 " int Type;\n" 9554 " union\n" 9555 " {\n" 9556 " int x;\n" 9557 " double y;\n" 9558 " } Value;\n" 9559 " class C\n" 9560 " {\n" 9561 " MyFavoriteType Value;\n" 9562 " } Class;\n" 9563 "}\n", 9564 MozillaBraceStyle); 9565 } 9566 9567 TEST_F(FormatTest, StroustrupBraceBreaking) { 9568 FormatStyle StroustrupBraceStyle = getLLVMStyle(); 9569 StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 9570 verifyFormat("namespace a {\n" 9571 "class A {\n" 9572 " void f()\n" 9573 " {\n" 9574 " if (true) {\n" 9575 " a();\n" 9576 " b();\n" 9577 " }\n" 9578 " }\n" 9579 " void g() { return; }\n" 9580 "};\n" 9581 "struct B {\n" 9582 " int x;\n" 9583 "};\n" 9584 "}\n", 9585 StroustrupBraceStyle); 9586 9587 verifyFormat("void foo()\n" 9588 "{\n" 9589 " if (a) {\n" 9590 " a();\n" 9591 " }\n" 9592 " else {\n" 9593 " b();\n" 9594 " }\n" 9595 "}\n", 9596 StroustrupBraceStyle); 9597 9598 verifyFormat("#ifdef _DEBUG\n" 9599 "int foo(int i = 0)\n" 9600 "#else\n" 9601 "int foo(int i = 5)\n" 9602 "#endif\n" 9603 "{\n" 9604 " return i;\n" 9605 "}", 9606 StroustrupBraceStyle); 9607 9608 verifyFormat("void foo() {}\n" 9609 "void bar()\n" 9610 "#ifdef _DEBUG\n" 9611 "{\n" 9612 " foo();\n" 9613 "}\n" 9614 "#else\n" 9615 "{\n" 9616 "}\n" 9617 "#endif", 9618 StroustrupBraceStyle); 9619 9620 verifyFormat("void foobar() { int i = 5; }\n" 9621 "#ifdef _DEBUG\n" 9622 "void bar() {}\n" 9623 "#else\n" 9624 "void bar() { foobar(); }\n" 9625 "#endif", 9626 StroustrupBraceStyle); 9627 } 9628 9629 TEST_F(FormatTest, AllmanBraceBreaking) { 9630 FormatStyle AllmanBraceStyle = getLLVMStyle(); 9631 AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman; 9632 verifyFormat("namespace a\n" 9633 "{\n" 9634 "class A\n" 9635 "{\n" 9636 " void f()\n" 9637 " {\n" 9638 " if (true)\n" 9639 " {\n" 9640 " a();\n" 9641 " b();\n" 9642 " }\n" 9643 " }\n" 9644 " void g() { return; }\n" 9645 "};\n" 9646 "struct B\n" 9647 "{\n" 9648 " int x;\n" 9649 "};\n" 9650 "}", 9651 AllmanBraceStyle); 9652 9653 verifyFormat("void f()\n" 9654 "{\n" 9655 " if (true)\n" 9656 " {\n" 9657 " a();\n" 9658 " }\n" 9659 " else if (false)\n" 9660 " {\n" 9661 " b();\n" 9662 " }\n" 9663 " else\n" 9664 " {\n" 9665 " c();\n" 9666 " }\n" 9667 "}\n", 9668 AllmanBraceStyle); 9669 9670 verifyFormat("void f()\n" 9671 "{\n" 9672 " for (int i = 0; i < 10; ++i)\n" 9673 " {\n" 9674 " a();\n" 9675 " }\n" 9676 " while (false)\n" 9677 " {\n" 9678 " b();\n" 9679 " }\n" 9680 " do\n" 9681 " {\n" 9682 " c();\n" 9683 " } while (false)\n" 9684 "}\n", 9685 AllmanBraceStyle); 9686 9687 verifyFormat("void f(int a)\n" 9688 "{\n" 9689 " switch (a)\n" 9690 " {\n" 9691 " case 0:\n" 9692 " break;\n" 9693 " case 1:\n" 9694 " {\n" 9695 " break;\n" 9696 " }\n" 9697 " case 2:\n" 9698 " {\n" 9699 " }\n" 9700 " break;\n" 9701 " default:\n" 9702 " break;\n" 9703 " }\n" 9704 "}\n", 9705 AllmanBraceStyle); 9706 9707 verifyFormat("enum X\n" 9708 "{\n" 9709 " Y = 0,\n" 9710 "}\n", 9711 AllmanBraceStyle); 9712 verifyFormat("enum X\n" 9713 "{\n" 9714 " Y = 0\n" 9715 "}\n", 9716 AllmanBraceStyle); 9717 9718 verifyFormat("@interface BSApplicationController ()\n" 9719 "{\n" 9720 "@private\n" 9721 " id _extraIvar;\n" 9722 "}\n" 9723 "@end\n", 9724 AllmanBraceStyle); 9725 9726 verifyFormat("#ifdef _DEBUG\n" 9727 "int foo(int i = 0)\n" 9728 "#else\n" 9729 "int foo(int i = 5)\n" 9730 "#endif\n" 9731 "{\n" 9732 " return i;\n" 9733 "}", 9734 AllmanBraceStyle); 9735 9736 verifyFormat("void foo() {}\n" 9737 "void bar()\n" 9738 "#ifdef _DEBUG\n" 9739 "{\n" 9740 " foo();\n" 9741 "}\n" 9742 "#else\n" 9743 "{\n" 9744 "}\n" 9745 "#endif", 9746 AllmanBraceStyle); 9747 9748 verifyFormat("void foobar() { int i = 5; }\n" 9749 "#ifdef _DEBUG\n" 9750 "void bar() {}\n" 9751 "#else\n" 9752 "void bar() { foobar(); }\n" 9753 "#endif", 9754 AllmanBraceStyle); 9755 9756 // This shouldn't affect ObjC blocks.. 9757 verifyFormat("[self doSomeThingWithACompletionHandler:^{\n" 9758 " // ...\n" 9759 " int i;\n" 9760 "}];", 9761 AllmanBraceStyle); 9762 verifyFormat("void (^block)(void) = ^{\n" 9763 " // ...\n" 9764 " int i;\n" 9765 "};", 9766 AllmanBraceStyle); 9767 // .. or dict literals. 9768 verifyFormat("void f()\n" 9769 "{\n" 9770 " [object someMethod:@{ @\"a\" : @\"b\" }];\n" 9771 "}", 9772 AllmanBraceStyle); 9773 verifyFormat("int f()\n" 9774 "{ // comment\n" 9775 " return 42;\n" 9776 "}", 9777 AllmanBraceStyle); 9778 9779 AllmanBraceStyle.ColumnLimit = 19; 9780 verifyFormat("void f() { int i; }", AllmanBraceStyle); 9781 AllmanBraceStyle.ColumnLimit = 18; 9782 verifyFormat("void f()\n" 9783 "{\n" 9784 " int i;\n" 9785 "}", 9786 AllmanBraceStyle); 9787 AllmanBraceStyle.ColumnLimit = 80; 9788 9789 FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle; 9790 BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine = true; 9791 BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true; 9792 verifyFormat("void f(bool b)\n" 9793 "{\n" 9794 " if (b)\n" 9795 " {\n" 9796 " return;\n" 9797 " }\n" 9798 "}\n", 9799 BreakBeforeBraceShortIfs); 9800 verifyFormat("void f(bool b)\n" 9801 "{\n" 9802 " if (b) return;\n" 9803 "}\n", 9804 BreakBeforeBraceShortIfs); 9805 verifyFormat("void f(bool b)\n" 9806 "{\n" 9807 " while (b)\n" 9808 " {\n" 9809 " return;\n" 9810 " }\n" 9811 "}\n", 9812 BreakBeforeBraceShortIfs); 9813 } 9814 9815 TEST_F(FormatTest, GNUBraceBreaking) { 9816 FormatStyle GNUBraceStyle = getLLVMStyle(); 9817 GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU; 9818 verifyFormat("namespace a\n" 9819 "{\n" 9820 "class A\n" 9821 "{\n" 9822 " void f()\n" 9823 " {\n" 9824 " int a;\n" 9825 " {\n" 9826 " int b;\n" 9827 " }\n" 9828 " if (true)\n" 9829 " {\n" 9830 " a();\n" 9831 " b();\n" 9832 " }\n" 9833 " }\n" 9834 " void g() { return; }\n" 9835 "}\n" 9836 "}", 9837 GNUBraceStyle); 9838 9839 verifyFormat("void f()\n" 9840 "{\n" 9841 " if (true)\n" 9842 " {\n" 9843 " a();\n" 9844 " }\n" 9845 " else if (false)\n" 9846 " {\n" 9847 " b();\n" 9848 " }\n" 9849 " else\n" 9850 " {\n" 9851 " c();\n" 9852 " }\n" 9853 "}\n", 9854 GNUBraceStyle); 9855 9856 verifyFormat("void f()\n" 9857 "{\n" 9858 " for (int i = 0; i < 10; ++i)\n" 9859 " {\n" 9860 " a();\n" 9861 " }\n" 9862 " while (false)\n" 9863 " {\n" 9864 " b();\n" 9865 " }\n" 9866 " do\n" 9867 " {\n" 9868 " c();\n" 9869 " }\n" 9870 " while (false);\n" 9871 "}\n", 9872 GNUBraceStyle); 9873 9874 verifyFormat("void f(int a)\n" 9875 "{\n" 9876 " switch (a)\n" 9877 " {\n" 9878 " case 0:\n" 9879 " break;\n" 9880 " case 1:\n" 9881 " {\n" 9882 " break;\n" 9883 " }\n" 9884 " case 2:\n" 9885 " {\n" 9886 " }\n" 9887 " break;\n" 9888 " default:\n" 9889 " break;\n" 9890 " }\n" 9891 "}\n", 9892 GNUBraceStyle); 9893 9894 verifyFormat("enum X\n" 9895 "{\n" 9896 " Y = 0,\n" 9897 "}\n", 9898 GNUBraceStyle); 9899 9900 verifyFormat("@interface BSApplicationController ()\n" 9901 "{\n" 9902 "@private\n" 9903 " id _extraIvar;\n" 9904 "}\n" 9905 "@end\n", 9906 GNUBraceStyle); 9907 9908 verifyFormat("#ifdef _DEBUG\n" 9909 "int foo(int i = 0)\n" 9910 "#else\n" 9911 "int foo(int i = 5)\n" 9912 "#endif\n" 9913 "{\n" 9914 " return i;\n" 9915 "}", 9916 GNUBraceStyle); 9917 9918 verifyFormat("void foo() {}\n" 9919 "void bar()\n" 9920 "#ifdef _DEBUG\n" 9921 "{\n" 9922 " foo();\n" 9923 "}\n" 9924 "#else\n" 9925 "{\n" 9926 "}\n" 9927 "#endif", 9928 GNUBraceStyle); 9929 9930 verifyFormat("void foobar() { int i = 5; }\n" 9931 "#ifdef _DEBUG\n" 9932 "void bar() {}\n" 9933 "#else\n" 9934 "void bar() { foobar(); }\n" 9935 "#endif", 9936 GNUBraceStyle); 9937 } 9938 9939 TEST_F(FormatTest, WebKitBraceBreaking) { 9940 FormatStyle WebKitBraceStyle = getLLVMStyle(); 9941 WebKitBraceStyle.BreakBeforeBraces = FormatStyle::BS_WebKit; 9942 verifyFormat("namespace a {\n" 9943 "class A {\n" 9944 " void f()\n" 9945 " {\n" 9946 " if (true) {\n" 9947 " a();\n" 9948 " b();\n" 9949 " }\n" 9950 " }\n" 9951 " void g() { return; }\n" 9952 "};\n" 9953 "enum E {\n" 9954 " A,\n" 9955 " // foo\n" 9956 " B,\n" 9957 " C\n" 9958 "};\n" 9959 "struct B {\n" 9960 " int x;\n" 9961 "};\n" 9962 "}\n", 9963 WebKitBraceStyle); 9964 verifyFormat("struct S {\n" 9965 " int Type;\n" 9966 " union {\n" 9967 " int x;\n" 9968 " double y;\n" 9969 " } Value;\n" 9970 " class C {\n" 9971 " MyFavoriteType Value;\n" 9972 " } Class;\n" 9973 "};\n", 9974 WebKitBraceStyle); 9975 } 9976 9977 TEST_F(FormatTest, CatchExceptionReferenceBinding) { 9978 verifyFormat("void f() {\n" 9979 " try {\n" 9980 " } catch (const Exception &e) {\n" 9981 " }\n" 9982 "}\n", 9983 getLLVMStyle()); 9984 } 9985 9986 TEST_F(FormatTest, UnderstandsPragmas) { 9987 verifyFormat("#pragma omp reduction(| : var)"); 9988 verifyFormat("#pragma omp reduction(+ : var)"); 9989 9990 EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string " 9991 "(including parentheses).", 9992 format("#pragma mark Any non-hyphenated or hyphenated string " 9993 "(including parentheses).")); 9994 } 9995 9996 TEST_F(FormatTest, UnderstandPragmaOption) { 9997 verifyFormat("#pragma option -C -A"); 9998 9999 EXPECT_EQ("#pragma option -C -A", format("#pragma option -C -A")); 10000 } 10001 10002 #define EXPECT_ALL_STYLES_EQUAL(Styles) \ 10003 for (size_t i = 1; i < Styles.size(); ++i) \ 10004 EXPECT_EQ(Styles[0], Styles[i]) << "Style #" << i << " of " << Styles.size() \ 10005 << " differs from Style #0" 10006 10007 TEST_F(FormatTest, GetsPredefinedStyleByName) { 10008 SmallVector<FormatStyle, 3> Styles; 10009 Styles.resize(3); 10010 10011 Styles[0] = getLLVMStyle(); 10012 EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1])); 10013 EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2])); 10014 EXPECT_ALL_STYLES_EQUAL(Styles); 10015 10016 Styles[0] = getGoogleStyle(); 10017 EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1])); 10018 EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2])); 10019 EXPECT_ALL_STYLES_EQUAL(Styles); 10020 10021 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 10022 EXPECT_TRUE( 10023 getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1])); 10024 EXPECT_TRUE( 10025 getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2])); 10026 EXPECT_ALL_STYLES_EQUAL(Styles); 10027 10028 Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp); 10029 EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1])); 10030 EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2])); 10031 EXPECT_ALL_STYLES_EQUAL(Styles); 10032 10033 Styles[0] = getMozillaStyle(); 10034 EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1])); 10035 EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2])); 10036 EXPECT_ALL_STYLES_EQUAL(Styles); 10037 10038 Styles[0] = getWebKitStyle(); 10039 EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1])); 10040 EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2])); 10041 EXPECT_ALL_STYLES_EQUAL(Styles); 10042 10043 Styles[0] = getGNUStyle(); 10044 EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1])); 10045 EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2])); 10046 EXPECT_ALL_STYLES_EQUAL(Styles); 10047 10048 EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0])); 10049 } 10050 10051 TEST_F(FormatTest, GetsCorrectBasedOnStyle) { 10052 SmallVector<FormatStyle, 8> Styles; 10053 Styles.resize(2); 10054 10055 Styles[0] = getGoogleStyle(); 10056 Styles[1] = getLLVMStyle(); 10057 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 10058 EXPECT_ALL_STYLES_EQUAL(Styles); 10059 10060 Styles.resize(5); 10061 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 10062 Styles[1] = getLLVMStyle(); 10063 Styles[1].Language = FormatStyle::LK_JavaScript; 10064 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 10065 10066 Styles[2] = getLLVMStyle(); 10067 Styles[2].Language = FormatStyle::LK_JavaScript; 10068 EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n" 10069 "BasedOnStyle: Google", 10070 &Styles[2]) 10071 .value()); 10072 10073 Styles[3] = getLLVMStyle(); 10074 Styles[3].Language = FormatStyle::LK_JavaScript; 10075 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n" 10076 "Language: JavaScript", 10077 &Styles[3]) 10078 .value()); 10079 10080 Styles[4] = getLLVMStyle(); 10081 Styles[4].Language = FormatStyle::LK_JavaScript; 10082 EXPECT_EQ(0, parseConfiguration("---\n" 10083 "BasedOnStyle: LLVM\n" 10084 "IndentWidth: 123\n" 10085 "---\n" 10086 "BasedOnStyle: Google\n" 10087 "Language: JavaScript", 10088 &Styles[4]) 10089 .value()); 10090 EXPECT_ALL_STYLES_EQUAL(Styles); 10091 } 10092 10093 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME) \ 10094 Style.FIELD = false; \ 10095 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value()); \ 10096 EXPECT_TRUE(Style.FIELD); \ 10097 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value()); \ 10098 EXPECT_FALSE(Style.FIELD); 10099 10100 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD) 10101 10102 #define CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, CONFIG_NAME) \ 10103 Style.STRUCT.FIELD = false; \ 10104 EXPECT_EQ(0, \ 10105 parseConfiguration(#STRUCT ":\n " CONFIG_NAME ": true", &Style) \ 10106 .value()); \ 10107 EXPECT_TRUE(Style.STRUCT.FIELD); \ 10108 EXPECT_EQ(0, \ 10109 parseConfiguration(#STRUCT ":\n " CONFIG_NAME ": false", &Style) \ 10110 .value()); \ 10111 EXPECT_FALSE(Style.STRUCT.FIELD); 10112 10113 #define CHECK_PARSE_NESTED_BOOL(STRUCT, FIELD) \ 10114 CHECK_PARSE_NESTED_BOOL_FIELD(STRUCT, FIELD, #FIELD) 10115 10116 #define CHECK_PARSE(TEXT, FIELD, VALUE) \ 10117 EXPECT_NE(VALUE, Style.FIELD); \ 10118 EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value()); \ 10119 EXPECT_EQ(VALUE, Style.FIELD) 10120 10121 TEST_F(FormatTest, ParsesConfigurationBools) { 10122 FormatStyle Style = {}; 10123 Style.Language = FormatStyle::LK_Cpp; 10124 CHECK_PARSE_BOOL(AlignEscapedNewlinesLeft); 10125 CHECK_PARSE_BOOL(AlignOperands); 10126 CHECK_PARSE_BOOL(AlignTrailingComments); 10127 CHECK_PARSE_BOOL(AlignConsecutiveAssignments); 10128 CHECK_PARSE_BOOL(AlignConsecutiveDeclarations); 10129 CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine); 10130 CHECK_PARSE_BOOL(AllowShortBlocksOnASingleLine); 10131 CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine); 10132 CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine); 10133 CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine); 10134 CHECK_PARSE_BOOL(AlwaysBreakTemplateDeclarations); 10135 CHECK_PARSE_BOOL(BinPackArguments); 10136 CHECK_PARSE_BOOL(BinPackParameters); 10137 CHECK_PARSE_BOOL(BreakAfterJavaFieldAnnotations); 10138 CHECK_PARSE_BOOL(BreakBeforeTernaryOperators); 10139 CHECK_PARSE_BOOL(BreakConstructorInitializersBeforeComma); 10140 CHECK_PARSE_BOOL(BreakStringLiterals); 10141 CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine); 10142 CHECK_PARSE_BOOL(DerivePointerAlignment); 10143 CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding"); 10144 CHECK_PARSE_BOOL(DisableFormat); 10145 CHECK_PARSE_BOOL(IndentCaseLabels); 10146 CHECK_PARSE_BOOL(IndentWrappedFunctionNames); 10147 CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks); 10148 CHECK_PARSE_BOOL(ObjCSpaceAfterProperty); 10149 CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList); 10150 CHECK_PARSE_BOOL(Cpp11BracedListStyle); 10151 CHECK_PARSE_BOOL(ReflowComments); 10152 CHECK_PARSE_BOOL(SortIncludes); 10153 CHECK_PARSE_BOOL(SpacesInParentheses); 10154 CHECK_PARSE_BOOL(SpacesInSquareBrackets); 10155 CHECK_PARSE_BOOL(SpacesInAngles); 10156 CHECK_PARSE_BOOL(SpaceInEmptyParentheses); 10157 CHECK_PARSE_BOOL(SpacesInContainerLiterals); 10158 CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses); 10159 CHECK_PARSE_BOOL(SpaceAfterCStyleCast); 10160 CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators); 10161 10162 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterClass); 10163 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterControlStatement); 10164 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterEnum); 10165 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterFunction); 10166 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterNamespace); 10167 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterObjCDeclaration); 10168 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterStruct); 10169 CHECK_PARSE_NESTED_BOOL(BraceWrapping, AfterUnion); 10170 CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeCatch); 10171 CHECK_PARSE_NESTED_BOOL(BraceWrapping, BeforeElse); 10172 CHECK_PARSE_NESTED_BOOL(BraceWrapping, IndentBraces); 10173 } 10174 10175 #undef CHECK_PARSE_BOOL 10176 10177 TEST_F(FormatTest, ParsesConfiguration) { 10178 FormatStyle Style = {}; 10179 Style.Language = FormatStyle::LK_Cpp; 10180 CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234); 10181 CHECK_PARSE("ConstructorInitializerIndentWidth: 1234", 10182 ConstructorInitializerIndentWidth, 1234u); 10183 CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u); 10184 CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u); 10185 CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u); 10186 CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234", 10187 PenaltyBreakBeforeFirstCallParameter, 1234u); 10188 CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u); 10189 CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234", 10190 PenaltyReturnTypeOnItsOwnLine, 1234u); 10191 CHECK_PARSE("SpacesBeforeTrailingComments: 1234", 10192 SpacesBeforeTrailingComments, 1234u); 10193 CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u); 10194 CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u); 10195 CHECK_PARSE("CommentPragmas: '// abc$'", CommentPragmas, "// abc$"); 10196 10197 Style.PointerAlignment = FormatStyle::PAS_Middle; 10198 CHECK_PARSE("PointerAlignment: Left", PointerAlignment, 10199 FormatStyle::PAS_Left); 10200 CHECK_PARSE("PointerAlignment: Right", PointerAlignment, 10201 FormatStyle::PAS_Right); 10202 CHECK_PARSE("PointerAlignment: Middle", PointerAlignment, 10203 FormatStyle::PAS_Middle); 10204 // For backward compatibility: 10205 CHECK_PARSE("PointerBindsToType: Left", PointerAlignment, 10206 FormatStyle::PAS_Left); 10207 CHECK_PARSE("PointerBindsToType: Right", PointerAlignment, 10208 FormatStyle::PAS_Right); 10209 CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment, 10210 FormatStyle::PAS_Middle); 10211 10212 Style.Standard = FormatStyle::LS_Auto; 10213 CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03); 10214 CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Cpp11); 10215 CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03); 10216 CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11); 10217 CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto); 10218 10219 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 10220 CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment", 10221 BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment); 10222 CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators, 10223 FormatStyle::BOS_None); 10224 CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators, 10225 FormatStyle::BOS_All); 10226 // For backward compatibility: 10227 CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators, 10228 FormatStyle::BOS_None); 10229 CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators, 10230 FormatStyle::BOS_All); 10231 10232 Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak; 10233 CHECK_PARSE("AlignAfterOpenBracket: Align", AlignAfterOpenBracket, 10234 FormatStyle::BAS_Align); 10235 CHECK_PARSE("AlignAfterOpenBracket: DontAlign", AlignAfterOpenBracket, 10236 FormatStyle::BAS_DontAlign); 10237 CHECK_PARSE("AlignAfterOpenBracket: AlwaysBreak", AlignAfterOpenBracket, 10238 FormatStyle::BAS_AlwaysBreak); 10239 // For backward compatibility: 10240 CHECK_PARSE("AlignAfterOpenBracket: false", AlignAfterOpenBracket, 10241 FormatStyle::BAS_DontAlign); 10242 CHECK_PARSE("AlignAfterOpenBracket: true", AlignAfterOpenBracket, 10243 FormatStyle::BAS_Align); 10244 10245 Style.UseTab = FormatStyle::UT_ForIndentation; 10246 CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never); 10247 CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation); 10248 CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always); 10249 CHECK_PARSE("UseTab: ForContinuationAndIndentation", UseTab, 10250 FormatStyle::UT_ForContinuationAndIndentation); 10251 // For backward compatibility: 10252 CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never); 10253 CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always); 10254 10255 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 10256 CHECK_PARSE("AllowShortFunctionsOnASingleLine: None", 10257 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 10258 CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline", 10259 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline); 10260 CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty", 10261 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty); 10262 CHECK_PARSE("AllowShortFunctionsOnASingleLine: All", 10263 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 10264 // For backward compatibility: 10265 CHECK_PARSE("AllowShortFunctionsOnASingleLine: false", 10266 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 10267 CHECK_PARSE("AllowShortFunctionsOnASingleLine: true", 10268 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 10269 10270 Style.SpaceBeforeParens = FormatStyle::SBPO_Always; 10271 CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens, 10272 FormatStyle::SBPO_Never); 10273 CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens, 10274 FormatStyle::SBPO_Always); 10275 CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens, 10276 FormatStyle::SBPO_ControlStatements); 10277 // For backward compatibility: 10278 CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens, 10279 FormatStyle::SBPO_Never); 10280 CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens, 10281 FormatStyle::SBPO_ControlStatements); 10282 10283 Style.ColumnLimit = 123; 10284 FormatStyle BaseStyle = getLLVMStyle(); 10285 CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit); 10286 CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u); 10287 10288 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 10289 CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces, 10290 FormatStyle::BS_Attach); 10291 CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces, 10292 FormatStyle::BS_Linux); 10293 CHECK_PARSE("BreakBeforeBraces: Mozilla", BreakBeforeBraces, 10294 FormatStyle::BS_Mozilla); 10295 CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces, 10296 FormatStyle::BS_Stroustrup); 10297 CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces, 10298 FormatStyle::BS_Allman); 10299 CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU); 10300 CHECK_PARSE("BreakBeforeBraces: WebKit", BreakBeforeBraces, 10301 FormatStyle::BS_WebKit); 10302 CHECK_PARSE("BreakBeforeBraces: Custom", BreakBeforeBraces, 10303 FormatStyle::BS_Custom); 10304 10305 Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All; 10306 CHECK_PARSE("AlwaysBreakAfterReturnType: None", AlwaysBreakAfterReturnType, 10307 FormatStyle::RTBS_None); 10308 CHECK_PARSE("AlwaysBreakAfterReturnType: All", AlwaysBreakAfterReturnType, 10309 FormatStyle::RTBS_All); 10310 CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevel", 10311 AlwaysBreakAfterReturnType, FormatStyle::RTBS_TopLevel); 10312 CHECK_PARSE("AlwaysBreakAfterReturnType: AllDefinitions", 10313 AlwaysBreakAfterReturnType, FormatStyle::RTBS_AllDefinitions); 10314 CHECK_PARSE("AlwaysBreakAfterReturnType: TopLevelDefinitions", 10315 AlwaysBreakAfterReturnType, 10316 FormatStyle::RTBS_TopLevelDefinitions); 10317 10318 Style.AlwaysBreakAfterDefinitionReturnType = FormatStyle::DRTBS_All; 10319 CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: None", 10320 AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_None); 10321 CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: All", 10322 AlwaysBreakAfterDefinitionReturnType, FormatStyle::DRTBS_All); 10323 CHECK_PARSE("AlwaysBreakAfterDefinitionReturnType: TopLevel", 10324 AlwaysBreakAfterDefinitionReturnType, 10325 FormatStyle::DRTBS_TopLevel); 10326 10327 Style.NamespaceIndentation = FormatStyle::NI_All; 10328 CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation, 10329 FormatStyle::NI_None); 10330 CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation, 10331 FormatStyle::NI_Inner); 10332 CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation, 10333 FormatStyle::NI_All); 10334 10335 // FIXME: This is required because parsing a configuration simply overwrites 10336 // the first N elements of the list instead of resetting it. 10337 Style.ForEachMacros.clear(); 10338 std::vector<std::string> BoostForeach; 10339 BoostForeach.push_back("BOOST_FOREACH"); 10340 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach); 10341 std::vector<std::string> BoostAndQForeach; 10342 BoostAndQForeach.push_back("BOOST_FOREACH"); 10343 BoostAndQForeach.push_back("Q_FOREACH"); 10344 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros, 10345 BoostAndQForeach); 10346 10347 Style.IncludeCategories.clear(); 10348 std::vector<FormatStyle::IncludeCategory> ExpectedCategories = {{"abc/.*", 2}, 10349 {".*", 1}}; 10350 CHECK_PARSE("IncludeCategories:\n" 10351 " - Regex: abc/.*\n" 10352 " Priority: 2\n" 10353 " - Regex: .*\n" 10354 " Priority: 1", 10355 IncludeCategories, ExpectedCategories); 10356 CHECK_PARSE("IncludeIsMainRegex: 'abc$'", IncludeIsMainRegex, "abc$"); 10357 } 10358 10359 TEST_F(FormatTest, ParsesConfigurationWithLanguages) { 10360 FormatStyle Style = {}; 10361 Style.Language = FormatStyle::LK_Cpp; 10362 CHECK_PARSE("Language: Cpp\n" 10363 "IndentWidth: 12", 10364 IndentWidth, 12u); 10365 EXPECT_EQ(parseConfiguration("Language: JavaScript\n" 10366 "IndentWidth: 34", 10367 &Style), 10368 ParseError::Unsuitable); 10369 EXPECT_EQ(12u, Style.IndentWidth); 10370 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 10371 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 10372 10373 Style.Language = FormatStyle::LK_JavaScript; 10374 CHECK_PARSE("Language: JavaScript\n" 10375 "IndentWidth: 12", 10376 IndentWidth, 12u); 10377 CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u); 10378 EXPECT_EQ(parseConfiguration("Language: Cpp\n" 10379 "IndentWidth: 34", 10380 &Style), 10381 ParseError::Unsuitable); 10382 EXPECT_EQ(23u, Style.IndentWidth); 10383 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 10384 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 10385 10386 CHECK_PARSE("BasedOnStyle: LLVM\n" 10387 "IndentWidth: 67", 10388 IndentWidth, 67u); 10389 10390 CHECK_PARSE("---\n" 10391 "Language: JavaScript\n" 10392 "IndentWidth: 12\n" 10393 "---\n" 10394 "Language: Cpp\n" 10395 "IndentWidth: 34\n" 10396 "...\n", 10397 IndentWidth, 12u); 10398 10399 Style.Language = FormatStyle::LK_Cpp; 10400 CHECK_PARSE("---\n" 10401 "Language: JavaScript\n" 10402 "IndentWidth: 12\n" 10403 "---\n" 10404 "Language: Cpp\n" 10405 "IndentWidth: 34\n" 10406 "...\n", 10407 IndentWidth, 34u); 10408 CHECK_PARSE("---\n" 10409 "IndentWidth: 78\n" 10410 "---\n" 10411 "Language: JavaScript\n" 10412 "IndentWidth: 56\n" 10413 "...\n", 10414 IndentWidth, 78u); 10415 10416 Style.ColumnLimit = 123; 10417 Style.IndentWidth = 234; 10418 Style.BreakBeforeBraces = FormatStyle::BS_Linux; 10419 Style.TabWidth = 345; 10420 EXPECT_FALSE(parseConfiguration("---\n" 10421 "IndentWidth: 456\n" 10422 "BreakBeforeBraces: Allman\n" 10423 "---\n" 10424 "Language: JavaScript\n" 10425 "IndentWidth: 111\n" 10426 "TabWidth: 111\n" 10427 "---\n" 10428 "Language: Cpp\n" 10429 "BreakBeforeBraces: Stroustrup\n" 10430 "TabWidth: 789\n" 10431 "...\n", 10432 &Style)); 10433 EXPECT_EQ(123u, Style.ColumnLimit); 10434 EXPECT_EQ(456u, Style.IndentWidth); 10435 EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces); 10436 EXPECT_EQ(789u, Style.TabWidth); 10437 10438 EXPECT_EQ(parseConfiguration("---\n" 10439 "Language: JavaScript\n" 10440 "IndentWidth: 56\n" 10441 "---\n" 10442 "IndentWidth: 78\n" 10443 "...\n", 10444 &Style), 10445 ParseError::Error); 10446 EXPECT_EQ(parseConfiguration("---\n" 10447 "Language: JavaScript\n" 10448 "IndentWidth: 56\n" 10449 "---\n" 10450 "Language: JavaScript\n" 10451 "IndentWidth: 78\n" 10452 "...\n", 10453 &Style), 10454 ParseError::Error); 10455 10456 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 10457 } 10458 10459 #undef CHECK_PARSE 10460 10461 TEST_F(FormatTest, UsesLanguageForBasedOnStyle) { 10462 FormatStyle Style = {}; 10463 Style.Language = FormatStyle::LK_JavaScript; 10464 Style.BreakBeforeTernaryOperators = true; 10465 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value()); 10466 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 10467 10468 Style.BreakBeforeTernaryOperators = true; 10469 EXPECT_EQ(0, parseConfiguration("---\n" 10470 "BasedOnStyle: Google\n" 10471 "---\n" 10472 "Language: JavaScript\n" 10473 "IndentWidth: 76\n" 10474 "...\n", 10475 &Style) 10476 .value()); 10477 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 10478 EXPECT_EQ(76u, Style.IndentWidth); 10479 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 10480 } 10481 10482 TEST_F(FormatTest, ConfigurationRoundTripTest) { 10483 FormatStyle Style = getLLVMStyle(); 10484 std::string YAML = configurationAsText(Style); 10485 FormatStyle ParsedStyle = {}; 10486 ParsedStyle.Language = FormatStyle::LK_Cpp; 10487 EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value()); 10488 EXPECT_EQ(Style, ParsedStyle); 10489 } 10490 10491 TEST_F(FormatTest, WorksFor8bitEncodings) { 10492 EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n" 10493 "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n" 10494 "\"\xe7\xe8\xec\xed\xfe\xfe \"\n" 10495 "\"\xef\xee\xf0\xf3...\"", 10496 format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 " 10497 "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe " 10498 "\xef\xee\xf0\xf3...\"", 10499 getLLVMStyleWithColumns(12))); 10500 } 10501 10502 TEST_F(FormatTest, HandlesUTF8BOM) { 10503 EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf")); 10504 EXPECT_EQ("\xef\xbb\xbf#include <iostream>", 10505 format("\xef\xbb\xbf#include <iostream>")); 10506 EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>", 10507 format("\xef\xbb\xbf\n#include <iostream>")); 10508 } 10509 10510 // FIXME: Encode Cyrillic and CJK characters below to appease MS compilers. 10511 #if !defined(_MSC_VER) 10512 10513 TEST_F(FormatTest, CountsUTF8CharactersProperly) { 10514 verifyFormat("\"Однажды в студёную зимнюю пору...\"", 10515 getLLVMStyleWithColumns(35)); 10516 verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"", 10517 getLLVMStyleWithColumns(31)); 10518 verifyFormat("// Однажды в студёную зимнюю пору...", 10519 getLLVMStyleWithColumns(36)); 10520 verifyFormat("// 一 二 三 四 五 六 七 八 九 十", getLLVMStyleWithColumns(32)); 10521 verifyFormat("/* Однажды в студёную зимнюю пору... */", 10522 getLLVMStyleWithColumns(39)); 10523 verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */", 10524 getLLVMStyleWithColumns(35)); 10525 } 10526 10527 TEST_F(FormatTest, SplitsUTF8Strings) { 10528 // Non-printable characters' width is currently considered to be the length in 10529 // bytes in UTF8. The characters can be displayed in very different manner 10530 // (zero-width, single width with a substitution glyph, expanded to their code 10531 // (e.g. "<8d>"), so there's no single correct way to handle them. 10532 EXPECT_EQ("\"aaaaÄ\"\n" 10533 "\"\xc2\x8d\";", 10534 format("\"aaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10))); 10535 EXPECT_EQ("\"aaaaaaaÄ\"\n" 10536 "\"\xc2\x8d\";", 10537 format("\"aaaaaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10))); 10538 EXPECT_EQ("\"Однажды, в \"\n" 10539 "\"студёную \"\n" 10540 "\"зимнюю \"\n" 10541 "\"пору,\"", 10542 format("\"Однажды, в студёную зимнюю пору,\"", 10543 getLLVMStyleWithColumns(13))); 10544 EXPECT_EQ( 10545 "\"一 二 三 \"\n" 10546 "\"四 五六 \"\n" 10547 "\"七 八 九 \"\n" 10548 "\"十\"", 10549 format("\"一 二 三 四 五六 七 八 九 十\"", getLLVMStyleWithColumns(11))); 10550 EXPECT_EQ("\"一\t二 \"\n" 10551 "\"\t三 \"\n" 10552 "\"四 五\t六 \"\n" 10553 "\"\t七 \"\n" 10554 "\"八九十\tqq\"", 10555 format("\"一\t二 \t三 四 五\t六 \t七 八九十\tqq\"", 10556 getLLVMStyleWithColumns(11))); 10557 10558 // UTF8 character in an escape sequence. 10559 EXPECT_EQ("\"aaaaaa\"\n" 10560 "\"\\\xC2\x8D\"", 10561 format("\"aaaaaa\\\xC2\x8D\"", getLLVMStyleWithColumns(10))); 10562 } 10563 10564 TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) { 10565 EXPECT_EQ("const char *sssss =\n" 10566 " \"一二三四五六七八\\\n" 10567 " 九 十\";", 10568 format("const char *sssss = \"一二三四五六七八\\\n" 10569 " 九 十\";", 10570 getLLVMStyleWithColumns(30))); 10571 } 10572 10573 TEST_F(FormatTest, SplitsUTF8LineComments) { 10574 EXPECT_EQ("// aaaaÄ\xc2\x8d", 10575 format("// aaaaÄ\xc2\x8d", getLLVMStyleWithColumns(10))); 10576 EXPECT_EQ("// Я из лесу\n" 10577 "// вышел; был\n" 10578 "// сильный\n" 10579 "// мороз.", 10580 format("// Я из лесу вышел; был сильный мороз.", 10581 getLLVMStyleWithColumns(13))); 10582 EXPECT_EQ("// 一二三\n" 10583 "// 四五六七\n" 10584 "// 八 九\n" 10585 "// 十", 10586 format("// 一二三 四五六七 八 九 十", getLLVMStyleWithColumns(9))); 10587 } 10588 10589 TEST_F(FormatTest, SplitsUTF8BlockComments) { 10590 EXPECT_EQ("/* Гляжу,\n" 10591 " * поднимается\n" 10592 " * медленно в\n" 10593 " * гору\n" 10594 " * Лошадка,\n" 10595 " * везущая\n" 10596 " * хворосту\n" 10597 " * воз. */", 10598 format("/* Гляжу, поднимается медленно в гору\n" 10599 " * Лошадка, везущая хворосту воз. */", 10600 getLLVMStyleWithColumns(13))); 10601 EXPECT_EQ( 10602 "/* 一二三\n" 10603 " * 四五六七\n" 10604 " * 八 九\n" 10605 " * 十 */", 10606 format("/* 一二三 四五六七 八 九 十 */", getLLVMStyleWithColumns(9))); 10607 EXPECT_EQ("/* �������� ��������\n" 10608 " * ��������\n" 10609 " * ������-�� */", 10610 format("/* �������� �������� �������� ������-�� */", getLLVMStyleWithColumns(12))); 10611 } 10612 10613 #endif // _MSC_VER 10614 10615 TEST_F(FormatTest, ConstructorInitializerIndentWidth) { 10616 FormatStyle Style = getLLVMStyle(); 10617 10618 Style.ConstructorInitializerIndentWidth = 4; 10619 verifyFormat( 10620 "SomeClass::Constructor()\n" 10621 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 10622 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 10623 Style); 10624 10625 Style.ConstructorInitializerIndentWidth = 2; 10626 verifyFormat( 10627 "SomeClass::Constructor()\n" 10628 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 10629 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 10630 Style); 10631 10632 Style.ConstructorInitializerIndentWidth = 0; 10633 verifyFormat( 10634 "SomeClass::Constructor()\n" 10635 ": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 10636 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 10637 Style); 10638 Style.AlignAfterOpenBracket = FormatStyle::BAS_AlwaysBreak; 10639 verifyFormat( 10640 "SomeLongTemplateVariableName<\n" 10641 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>", 10642 Style); 10643 verifyFormat( 10644 "bool smaller = 1 < bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 10645 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 10646 Style); 10647 } 10648 10649 TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) { 10650 FormatStyle Style = getLLVMStyle(); 10651 Style.BreakConstructorInitializersBeforeComma = true; 10652 Style.ConstructorInitializerIndentWidth = 4; 10653 verifyFormat("SomeClass::Constructor()\n" 10654 " : a(a)\n" 10655 " , b(b)\n" 10656 " , c(c) {}", 10657 Style); 10658 verifyFormat("SomeClass::Constructor()\n" 10659 " : a(a) {}", 10660 Style); 10661 10662 Style.ColumnLimit = 0; 10663 verifyFormat("SomeClass::Constructor()\n" 10664 " : a(a) {}", 10665 Style); 10666 verifyFormat("SomeClass::Constructor() noexcept\n" 10667 " : a(a) {}", 10668 Style); 10669 verifyFormat("SomeClass::Constructor()\n" 10670 " : a(a)\n" 10671 " , b(b)\n" 10672 " , c(c) {}", 10673 Style); 10674 verifyFormat("SomeClass::Constructor()\n" 10675 " : a(a) {\n" 10676 " foo();\n" 10677 " bar();\n" 10678 "}", 10679 Style); 10680 10681 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 10682 verifyFormat("SomeClass::Constructor()\n" 10683 " : a(a)\n" 10684 " , b(b)\n" 10685 " , c(c) {\n}", 10686 Style); 10687 verifyFormat("SomeClass::Constructor()\n" 10688 " : a(a) {\n}", 10689 Style); 10690 10691 Style.ColumnLimit = 80; 10692 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 10693 Style.ConstructorInitializerIndentWidth = 2; 10694 verifyFormat("SomeClass::Constructor()\n" 10695 " : a(a)\n" 10696 " , b(b)\n" 10697 " , c(c) {}", 10698 Style); 10699 10700 Style.ConstructorInitializerIndentWidth = 0; 10701 verifyFormat("SomeClass::Constructor()\n" 10702 ": a(a)\n" 10703 ", b(b)\n" 10704 ", c(c) {}", 10705 Style); 10706 10707 Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 10708 Style.ConstructorInitializerIndentWidth = 4; 10709 verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style); 10710 verifyFormat( 10711 "SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n", 10712 Style); 10713 verifyFormat( 10714 "SomeClass::Constructor()\n" 10715 " : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}", 10716 Style); 10717 Style.ConstructorInitializerIndentWidth = 4; 10718 Style.ColumnLimit = 60; 10719 verifyFormat("SomeClass::Constructor()\n" 10720 " : aaaaaaaa(aaaaaaaa)\n" 10721 " , aaaaaaaa(aaaaaaaa)\n" 10722 " , aaaaaaaa(aaaaaaaa) {}", 10723 Style); 10724 } 10725 10726 TEST_F(FormatTest, Destructors) { 10727 verifyFormat("void F(int &i) { i.~int(); }"); 10728 verifyFormat("void F(int &i) { i->~int(); }"); 10729 } 10730 10731 TEST_F(FormatTest, FormatsWithWebKitStyle) { 10732 FormatStyle Style = getWebKitStyle(); 10733 10734 // Don't indent in outer namespaces. 10735 verifyFormat("namespace outer {\n" 10736 "int i;\n" 10737 "namespace inner {\n" 10738 " int i;\n" 10739 "} // namespace inner\n" 10740 "} // namespace outer\n" 10741 "namespace other_outer {\n" 10742 "int i;\n" 10743 "}", 10744 Style); 10745 10746 // Don't indent case labels. 10747 verifyFormat("switch (variable) {\n" 10748 "case 1:\n" 10749 "case 2:\n" 10750 " doSomething();\n" 10751 " break;\n" 10752 "default:\n" 10753 " ++variable;\n" 10754 "}", 10755 Style); 10756 10757 // Wrap before binary operators. 10758 EXPECT_EQ("void f()\n" 10759 "{\n" 10760 " if (aaaaaaaaaaaaaaaa\n" 10761 " && bbbbbbbbbbbbbbbbbbbbbbbb\n" 10762 " && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 10763 " return;\n" 10764 "}", 10765 format("void f() {\n" 10766 "if (aaaaaaaaaaaaaaaa\n" 10767 "&& bbbbbbbbbbbbbbbbbbbbbbbb\n" 10768 "&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 10769 "return;\n" 10770 "}", 10771 Style)); 10772 10773 // Allow functions on a single line. 10774 verifyFormat("void f() { return; }", Style); 10775 10776 // Constructor initializers are formatted one per line with the "," on the 10777 // new line. 10778 verifyFormat("Constructor()\n" 10779 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 10780 " , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n" 10781 " aaaaaaaaaaaaaa)\n" 10782 " , aaaaaaaaaaaaaaaaaaaaaaa()\n" 10783 "{\n" 10784 "}", 10785 Style); 10786 verifyFormat("SomeClass::Constructor()\n" 10787 " : a(a)\n" 10788 "{\n" 10789 "}", 10790 Style); 10791 EXPECT_EQ("SomeClass::Constructor()\n" 10792 " : a(a)\n" 10793 "{\n" 10794 "}", 10795 format("SomeClass::Constructor():a(a){}", Style)); 10796 verifyFormat("SomeClass::Constructor()\n" 10797 " : a(a)\n" 10798 " , b(b)\n" 10799 " , c(c)\n" 10800 "{\n" 10801 "}", 10802 Style); 10803 verifyFormat("SomeClass::Constructor()\n" 10804 " : a(a)\n" 10805 "{\n" 10806 " foo();\n" 10807 " bar();\n" 10808 "}", 10809 Style); 10810 10811 // Access specifiers should be aligned left. 10812 verifyFormat("class C {\n" 10813 "public:\n" 10814 " int i;\n" 10815 "};", 10816 Style); 10817 10818 // Do not align comments. 10819 verifyFormat("int a; // Do not\n" 10820 "double b; // align comments.", 10821 Style); 10822 10823 // Do not align operands. 10824 EXPECT_EQ("ASSERT(aaaa\n" 10825 " || bbbb);", 10826 format("ASSERT ( aaaa\n||bbbb);", Style)); 10827 10828 // Accept input's line breaks. 10829 EXPECT_EQ("if (aaaaaaaaaaaaaaa\n" 10830 " || bbbbbbbbbbbbbbb) {\n" 10831 " i++;\n" 10832 "}", 10833 format("if (aaaaaaaaaaaaaaa\n" 10834 "|| bbbbbbbbbbbbbbb) { i++; }", 10835 Style)); 10836 EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n" 10837 " i++;\n" 10838 "}", 10839 format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style)); 10840 10841 // Don't automatically break all macro definitions (llvm.org/PR17842). 10842 verifyFormat("#define aNumber 10", Style); 10843 // However, generally keep the line breaks that the user authored. 10844 EXPECT_EQ("#define aNumber \\\n" 10845 " 10", 10846 format("#define aNumber \\\n" 10847 " 10", 10848 Style)); 10849 10850 // Keep empty and one-element array literals on a single line. 10851 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n" 10852 " copyItems:YES];", 10853 format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n" 10854 "copyItems:YES];", 10855 Style)); 10856 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n" 10857 " copyItems:YES];", 10858 format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n" 10859 " copyItems:YES];", 10860 Style)); 10861 // FIXME: This does not seem right, there should be more indentation before 10862 // the array literal's entries. Nested blocks have the same problem. 10863 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 10864 " @\"a\",\n" 10865 " @\"a\"\n" 10866 "]\n" 10867 " copyItems:YES];", 10868 format("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 10869 " @\"a\",\n" 10870 " @\"a\"\n" 10871 " ]\n" 10872 " copyItems:YES];", 10873 Style)); 10874 EXPECT_EQ( 10875 "NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 10876 " copyItems:YES];", 10877 format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 10878 " copyItems:YES];", 10879 Style)); 10880 10881 verifyFormat("[self.a b:c c:d];", Style); 10882 EXPECT_EQ("[self.a b:c\n" 10883 " c:d];", 10884 format("[self.a b:c\n" 10885 "c:d];", 10886 Style)); 10887 } 10888 10889 TEST_F(FormatTest, FormatsLambdas) { 10890 verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n"); 10891 verifyFormat("int c = [&] { [=] { return b++; }(); }();\n"); 10892 verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n"); 10893 verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n"); 10894 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n"); 10895 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n"); 10896 verifyFormat("void f() {\n" 10897 " other(x.begin(), x.end(), [&](int, int) { return 1; });\n" 10898 "}\n"); 10899 verifyFormat("void f() {\n" 10900 " other(x.begin(), //\n" 10901 " x.end(), //\n" 10902 " [&](int, int) { return 1; });\n" 10903 "}\n"); 10904 verifyFormat("SomeFunction([]() { // A cool function...\n" 10905 " return 43;\n" 10906 "});"); 10907 EXPECT_EQ("SomeFunction([]() {\n" 10908 "#define A a\n" 10909 " return 43;\n" 10910 "});", 10911 format("SomeFunction([](){\n" 10912 "#define A a\n" 10913 "return 43;\n" 10914 "});")); 10915 verifyFormat("void f() {\n" 10916 " SomeFunction([](decltype(x), A *a) {});\n" 10917 "}"); 10918 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 10919 " [](const aaaaaaaaaa &a) { return a; });"); 10920 verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n" 10921 " SomeOtherFunctioooooooooooooooooooooooooon();\n" 10922 "});"); 10923 verifyFormat("Constructor()\n" 10924 " : Field([] { // comment\n" 10925 " int i;\n" 10926 " }) {}"); 10927 verifyFormat("auto my_lambda = [](const string &some_parameter) {\n" 10928 " return some_parameter.size();\n" 10929 "};"); 10930 verifyFormat("std::function<std::string(const std::string &)> my_lambda =\n" 10931 " [](const string &s) { return s; };"); 10932 verifyFormat("int i = aaaaaa ? 1 //\n" 10933 " : [] {\n" 10934 " return 2; //\n" 10935 " }();"); 10936 verifyFormat("llvm::errs() << \"number of twos is \"\n" 10937 " << std::count_if(v.begin(), v.end(), [](int x) {\n" 10938 " return x == 2; // force break\n" 10939 " });"); 10940 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa([=](\n" 10941 " int iiiiiiiiiiii) {\n" 10942 " return aaaaaaaaaaaaaaaaaaaaaaa != aaaaaaaaaaaaaaaaaaaaaaa;\n" 10943 "});", 10944 getLLVMStyleWithColumns(60)); 10945 verifyFormat("SomeFunction({[&] {\n" 10946 " // comment\n" 10947 " },\n" 10948 " [&] {\n" 10949 " // comment\n" 10950 " }});"); 10951 verifyFormat("SomeFunction({[&] {\n" 10952 " // comment\n" 10953 "}});"); 10954 verifyFormat("virtual aaaaaaaaaaaaaaaa(std::function<bool()> bbbbbbbbbbbb =\n" 10955 " [&]() { return true; },\n" 10956 " aaaaa aaaaaaaaa);"); 10957 10958 // Lambdas with return types. 10959 verifyFormat("int c = []() -> int { return 2; }();\n"); 10960 verifyFormat("int c = []() -> int * { return 2; }();\n"); 10961 verifyFormat("int c = []() -> vector<int> { return {2}; }();\n"); 10962 verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());"); 10963 verifyGoogleFormat("auto a = [&b, c](D* d) -> D* {};"); 10964 verifyGoogleFormat("auto a = [&b, c](D* d) -> pair<D*, D*> {};"); 10965 verifyGoogleFormat("auto a = [&b, c](D* d) -> D& {};"); 10966 verifyGoogleFormat("auto a = [&b, c](D* d) -> const D* {};"); 10967 verifyFormat("[a, a]() -> a<1> {};"); 10968 verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n" 10969 " int j) -> int {\n" 10970 " return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n" 10971 "};"); 10972 verifyFormat( 10973 "aaaaaaaaaaaaaaaaaaaaaa(\n" 10974 " [](aaaaaaaaaaaaaaaaaaaaaaaaaaa &aaa) -> aaaaaaaaaaaaaaaa {\n" 10975 " return aaaaaaaaaaaaaaaaa;\n" 10976 " });", 10977 getLLVMStyleWithColumns(70)); 10978 10979 // Multiple lambdas in the same parentheses change indentation rules. 10980 verifyFormat("SomeFunction(\n" 10981 " []() {\n" 10982 " int i = 42;\n" 10983 " return i;\n" 10984 " },\n" 10985 " []() {\n" 10986 " int j = 43;\n" 10987 " return j;\n" 10988 " });"); 10989 10990 // More complex introducers. 10991 verifyFormat("return [i, args...] {};"); 10992 10993 // Not lambdas. 10994 verifyFormat("constexpr char hello[]{\"hello\"};"); 10995 verifyFormat("double &operator[](int i) { return 0; }\n" 10996 "int i;"); 10997 verifyFormat("std::unique_ptr<int[]> foo() {}"); 10998 verifyFormat("int i = a[a][a]->f();"); 10999 verifyFormat("int i = (*b)[a]->f();"); 11000 11001 // Other corner cases. 11002 verifyFormat("void f() {\n" 11003 " bar([]() {} // Did not respect SpacesBeforeTrailingComments\n" 11004 " );\n" 11005 "}"); 11006 11007 // Lambdas created through weird macros. 11008 verifyFormat("void f() {\n" 11009 " MACRO((const AA &a) { return 1; });\n" 11010 " MACRO((AA &a) { return 1; });\n" 11011 "}"); 11012 11013 verifyFormat("if (blah_blah(whatever, whatever, [] {\n" 11014 " doo_dah();\n" 11015 " doo_dah();\n" 11016 " })) {\n" 11017 "}"); 11018 verifyFormat("auto lambda = []() {\n" 11019 " int a = 2\n" 11020 "#if A\n" 11021 " + 2\n" 11022 "#endif\n" 11023 " ;\n" 11024 "};"); 11025 } 11026 11027 TEST_F(FormatTest, FormatsBlocks) { 11028 FormatStyle ShortBlocks = getLLVMStyle(); 11029 ShortBlocks.AllowShortBlocksOnASingleLine = true; 11030 verifyFormat("int (^Block)(int, int);", ShortBlocks); 11031 verifyFormat("int (^Block1)(int, int) = ^(int i, int j)", ShortBlocks); 11032 verifyFormat("void (^block)(int) = ^(id test) { int i; };", ShortBlocks); 11033 verifyFormat("void (^block)(int) = ^(int test) { int i; };", ShortBlocks); 11034 verifyFormat("void (^block)(int) = ^id(int test) { int i; };", ShortBlocks); 11035 verifyFormat("void (^block)(int) = ^int(int test) { int i; };", ShortBlocks); 11036 11037 verifyFormat("foo(^{ bar(); });", ShortBlocks); 11038 verifyFormat("foo(a, ^{ bar(); });", ShortBlocks); 11039 verifyFormat("{ void (^block)(Object *x); }", ShortBlocks); 11040 11041 verifyFormat("[operation setCompletionBlock:^{\n" 11042 " [self onOperationDone];\n" 11043 "}];"); 11044 verifyFormat("int i = {[operation setCompletionBlock:^{\n" 11045 " [self onOperationDone];\n" 11046 "}]};"); 11047 verifyFormat("[operation setCompletionBlock:^(int *i) {\n" 11048 " f();\n" 11049 "}];"); 11050 verifyFormat("int a = [operation block:^int(int *i) {\n" 11051 " return 1;\n" 11052 "}];"); 11053 verifyFormat("[myObject doSomethingWith:arg1\n" 11054 " aaa:^int(int *a) {\n" 11055 " return 1;\n" 11056 " }\n" 11057 " bbb:f(a * bbbbbbbb)];"); 11058 11059 verifyFormat("[operation setCompletionBlock:^{\n" 11060 " [self.delegate newDataAvailable];\n" 11061 "}];", 11062 getLLVMStyleWithColumns(60)); 11063 verifyFormat("dispatch_async(_fileIOQueue, ^{\n" 11064 " NSString *path = [self sessionFilePath];\n" 11065 " if (path) {\n" 11066 " // ...\n" 11067 " }\n" 11068 "});"); 11069 verifyFormat("[[SessionService sharedService]\n" 11070 " loadWindowWithCompletionBlock:^(SessionWindow *window) {\n" 11071 " if (window) {\n" 11072 " [self windowDidLoad:window];\n" 11073 " } else {\n" 11074 " [self errorLoadingWindow];\n" 11075 " }\n" 11076 " }];"); 11077 verifyFormat("void (^largeBlock)(void) = ^{\n" 11078 " // ...\n" 11079 "};\n", 11080 getLLVMStyleWithColumns(40)); 11081 verifyFormat("[[SessionService sharedService]\n" 11082 " loadWindowWithCompletionBlock: //\n" 11083 " ^(SessionWindow *window) {\n" 11084 " if (window) {\n" 11085 " [self windowDidLoad:window];\n" 11086 " } else {\n" 11087 " [self errorLoadingWindow];\n" 11088 " }\n" 11089 " }];", 11090 getLLVMStyleWithColumns(60)); 11091 verifyFormat("[myObject doSomethingWith:arg1\n" 11092 " firstBlock:^(Foo *a) {\n" 11093 " // ...\n" 11094 " int i;\n" 11095 " }\n" 11096 " secondBlock:^(Bar *b) {\n" 11097 " // ...\n" 11098 " int i;\n" 11099 " }\n" 11100 " thirdBlock:^Foo(Bar *b) {\n" 11101 " // ...\n" 11102 " int i;\n" 11103 " }];"); 11104 verifyFormat("[myObject doSomethingWith:arg1\n" 11105 " firstBlock:-1\n" 11106 " secondBlock:^(Bar *b) {\n" 11107 " // ...\n" 11108 " int i;\n" 11109 " }];"); 11110 11111 verifyFormat("f(^{\n" 11112 " @autoreleasepool {\n" 11113 " if (a) {\n" 11114 " g();\n" 11115 " }\n" 11116 " }\n" 11117 "});"); 11118 verifyFormat("Block b = ^int *(A *a, B *b) {}"); 11119 11120 FormatStyle FourIndent = getLLVMStyle(); 11121 FourIndent.ObjCBlockIndentWidth = 4; 11122 verifyFormat("[operation setCompletionBlock:^{\n" 11123 " [self onOperationDone];\n" 11124 "}];", 11125 FourIndent); 11126 } 11127 11128 TEST_F(FormatTest, FormatsBlocksWithZeroColumnWidth) { 11129 FormatStyle ZeroColumn = getLLVMStyle(); 11130 ZeroColumn.ColumnLimit = 0; 11131 11132 verifyFormat("[[SessionService sharedService] " 11133 "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n" 11134 " if (window) {\n" 11135 " [self windowDidLoad:window];\n" 11136 " } else {\n" 11137 " [self errorLoadingWindow];\n" 11138 " }\n" 11139 "}];", 11140 ZeroColumn); 11141 EXPECT_EQ("[[SessionService sharedService]\n" 11142 " loadWindowWithCompletionBlock:^(SessionWindow *window) {\n" 11143 " if (window) {\n" 11144 " [self windowDidLoad:window];\n" 11145 " } else {\n" 11146 " [self errorLoadingWindow];\n" 11147 " }\n" 11148 " }];", 11149 format("[[SessionService sharedService]\n" 11150 "loadWindowWithCompletionBlock:^(SessionWindow *window) {\n" 11151 " if (window) {\n" 11152 " [self windowDidLoad:window];\n" 11153 " } else {\n" 11154 " [self errorLoadingWindow];\n" 11155 " }\n" 11156 "}];", 11157 ZeroColumn)); 11158 verifyFormat("[myObject doSomethingWith:arg1\n" 11159 " firstBlock:^(Foo *a) {\n" 11160 " // ...\n" 11161 " int i;\n" 11162 " }\n" 11163 " secondBlock:^(Bar *b) {\n" 11164 " // ...\n" 11165 " int i;\n" 11166 " }\n" 11167 " thirdBlock:^Foo(Bar *b) {\n" 11168 " // ...\n" 11169 " int i;\n" 11170 " }];", 11171 ZeroColumn); 11172 verifyFormat("f(^{\n" 11173 " @autoreleasepool {\n" 11174 " if (a) {\n" 11175 " g();\n" 11176 " }\n" 11177 " }\n" 11178 "});", 11179 ZeroColumn); 11180 verifyFormat("void (^largeBlock)(void) = ^{\n" 11181 " // ...\n" 11182 "};", 11183 ZeroColumn); 11184 11185 ZeroColumn.AllowShortBlocksOnASingleLine = true; 11186 EXPECT_EQ("void (^largeBlock)(void) = ^{ int i; };", 11187 format("void (^largeBlock)(void) = ^{ int i; };", ZeroColumn)); 11188 ZeroColumn.AllowShortBlocksOnASingleLine = false; 11189 EXPECT_EQ("void (^largeBlock)(void) = ^{\n" 11190 " int i;\n" 11191 "};", 11192 format("void (^largeBlock)(void) = ^{ int i; };", ZeroColumn)); 11193 } 11194 11195 TEST_F(FormatTest, SupportsCRLF) { 11196 EXPECT_EQ("int a;\r\n" 11197 "int b;\r\n" 11198 "int c;\r\n", 11199 format("int a;\r\n" 11200 " int b;\r\n" 11201 " int c;\r\n", 11202 getLLVMStyle())); 11203 EXPECT_EQ("int a;\r\n" 11204 "int b;\r\n" 11205 "int c;\r\n", 11206 format("int a;\r\n" 11207 " int b;\n" 11208 " int c;\r\n", 11209 getLLVMStyle())); 11210 EXPECT_EQ("int a;\n" 11211 "int b;\n" 11212 "int c;\n", 11213 format("int a;\r\n" 11214 " int b;\n" 11215 " int c;\n", 11216 getLLVMStyle())); 11217 EXPECT_EQ("\"aaaaaaa \"\r\n" 11218 "\"bbbbbbb\";\r\n", 11219 format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10))); 11220 EXPECT_EQ("#define A \\\r\n" 11221 " b; \\\r\n" 11222 " c; \\\r\n" 11223 " d;\r\n", 11224 format("#define A \\\r\n" 11225 " b; \\\r\n" 11226 " c; d; \r\n", 11227 getGoogleStyle())); 11228 11229 EXPECT_EQ("/*\r\n" 11230 "multi line block comments\r\n" 11231 "should not introduce\r\n" 11232 "an extra carriage return\r\n" 11233 "*/\r\n", 11234 format("/*\r\n" 11235 "multi line block comments\r\n" 11236 "should not introduce\r\n" 11237 "an extra carriage return\r\n" 11238 "*/\r\n")); 11239 } 11240 11241 TEST_F(FormatTest, MunchSemicolonAfterBlocks) { 11242 verifyFormat("MY_CLASS(C) {\n" 11243 " int i;\n" 11244 " int j;\n" 11245 "};"); 11246 } 11247 11248 TEST_F(FormatTest, ConfigurableContinuationIndentWidth) { 11249 FormatStyle TwoIndent = getLLVMStyleWithColumns(15); 11250 TwoIndent.ContinuationIndentWidth = 2; 11251 11252 EXPECT_EQ("int i =\n" 11253 " longFunction(\n" 11254 " arg);", 11255 format("int i = longFunction(arg);", TwoIndent)); 11256 11257 FormatStyle SixIndent = getLLVMStyleWithColumns(20); 11258 SixIndent.ContinuationIndentWidth = 6; 11259 11260 EXPECT_EQ("int i =\n" 11261 " longFunction(\n" 11262 " arg);", 11263 format("int i = longFunction(arg);", SixIndent)); 11264 } 11265 11266 TEST_F(FormatTest, SpacesInAngles) { 11267 FormatStyle Spaces = getLLVMStyle(); 11268 Spaces.SpacesInAngles = true; 11269 11270 verifyFormat("static_cast< int >(arg);", Spaces); 11271 verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces); 11272 verifyFormat("f< int, float >();", Spaces); 11273 verifyFormat("template <> g() {}", Spaces); 11274 verifyFormat("template < std::vector< int > > f() {}", Spaces); 11275 verifyFormat("std::function< void(int, int) > fct;", Spaces); 11276 verifyFormat("void inFunction() { std::function< void(int, int) > fct; }", 11277 Spaces); 11278 11279 Spaces.Standard = FormatStyle::LS_Cpp03; 11280 Spaces.SpacesInAngles = true; 11281 verifyFormat("A< A< int > >();", Spaces); 11282 11283 Spaces.SpacesInAngles = false; 11284 verifyFormat("A<A<int> >();", Spaces); 11285 11286 Spaces.Standard = FormatStyle::LS_Cpp11; 11287 Spaces.SpacesInAngles = true; 11288 verifyFormat("A< A< int > >();", Spaces); 11289 11290 Spaces.SpacesInAngles = false; 11291 verifyFormat("A<A<int>>();", Spaces); 11292 } 11293 11294 TEST_F(FormatTest, TripleAngleBrackets) { 11295 verifyFormat("f<<<1, 1>>>();"); 11296 verifyFormat("f<<<1, 1, 1, s>>>();"); 11297 verifyFormat("f<<<a, b, c, d>>>();"); 11298 EXPECT_EQ("f<<<1, 1>>>();", format("f <<< 1, 1 >>> ();")); 11299 verifyFormat("f<param><<<1, 1>>>();"); 11300 verifyFormat("f<1><<<1, 1>>>();"); 11301 EXPECT_EQ("f<param><<<1, 1>>>();", format("f< param > <<< 1, 1 >>> ();")); 11302 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 11303 "aaaaaaaaaaa<<<\n 1, 1>>>();"); 11304 } 11305 11306 TEST_F(FormatTest, MergeLessLessAtEnd) { 11307 verifyFormat("<<"); 11308 EXPECT_EQ("< < <", format("\\\n<<<")); 11309 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 11310 "aaallvm::outs() <<"); 11311 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 11312 "aaaallvm::outs()\n <<"); 11313 } 11314 11315 TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) { 11316 std::string code = "#if A\n" 11317 "#if B\n" 11318 "a.\n" 11319 "#endif\n" 11320 " a = 1;\n" 11321 "#else\n" 11322 "#endif\n" 11323 "#if C\n" 11324 "#else\n" 11325 "#endif\n"; 11326 EXPECT_EQ(code, format(code)); 11327 } 11328 11329 TEST_F(FormatTest, HandleConflictMarkers) { 11330 // Git/SVN conflict markers. 11331 EXPECT_EQ("int a;\n" 11332 "void f() {\n" 11333 " callme(some(parameter1,\n" 11334 "<<<<<<< text by the vcs\n" 11335 " parameter2),\n" 11336 "||||||| text by the vcs\n" 11337 " parameter2),\n" 11338 " parameter3,\n" 11339 "======= text by the vcs\n" 11340 " parameter2, parameter3),\n" 11341 ">>>>>>> text by the vcs\n" 11342 " otherparameter);\n", 11343 format("int a;\n" 11344 "void f() {\n" 11345 " callme(some(parameter1,\n" 11346 "<<<<<<< text by the vcs\n" 11347 " parameter2),\n" 11348 "||||||| text by the vcs\n" 11349 " parameter2),\n" 11350 " parameter3,\n" 11351 "======= text by the vcs\n" 11352 " parameter2,\n" 11353 " parameter3),\n" 11354 ">>>>>>> text by the vcs\n" 11355 " otherparameter);\n")); 11356 11357 // Perforce markers. 11358 EXPECT_EQ("void f() {\n" 11359 " function(\n" 11360 ">>>> text by the vcs\n" 11361 " parameter,\n" 11362 "==== text by the vcs\n" 11363 " parameter,\n" 11364 "==== text by the vcs\n" 11365 " parameter,\n" 11366 "<<<< text by the vcs\n" 11367 " parameter);\n", 11368 format("void f() {\n" 11369 " function(\n" 11370 ">>>> text by the vcs\n" 11371 " parameter,\n" 11372 "==== text by the vcs\n" 11373 " parameter,\n" 11374 "==== text by the vcs\n" 11375 " parameter,\n" 11376 "<<<< text by the vcs\n" 11377 " parameter);\n")); 11378 11379 EXPECT_EQ("<<<<<<<\n" 11380 "|||||||\n" 11381 "=======\n" 11382 ">>>>>>>", 11383 format("<<<<<<<\n" 11384 "|||||||\n" 11385 "=======\n" 11386 ">>>>>>>")); 11387 11388 EXPECT_EQ("<<<<<<<\n" 11389 "|||||||\n" 11390 "int i;\n" 11391 "=======\n" 11392 ">>>>>>>", 11393 format("<<<<<<<\n" 11394 "|||||||\n" 11395 "int i;\n" 11396 "=======\n" 11397 ">>>>>>>")); 11398 11399 // FIXME: Handle parsing of macros around conflict markers correctly: 11400 EXPECT_EQ("#define Macro \\\n" 11401 "<<<<<<<\n" 11402 "Something \\\n" 11403 "|||||||\n" 11404 "Else \\\n" 11405 "=======\n" 11406 "Other \\\n" 11407 ">>>>>>>\n" 11408 " End int i;\n", 11409 format("#define Macro \\\n" 11410 "<<<<<<<\n" 11411 " Something \\\n" 11412 "|||||||\n" 11413 " Else \\\n" 11414 "=======\n" 11415 " Other \\\n" 11416 ">>>>>>>\n" 11417 " End\n" 11418 "int i;\n")); 11419 } 11420 11421 TEST_F(FormatTest, DisableRegions) { 11422 EXPECT_EQ("int i;\n" 11423 "// clang-format off\n" 11424 " int j;\n" 11425 "// clang-format on\n" 11426 "int k;", 11427 format(" int i;\n" 11428 " // clang-format off\n" 11429 " int j;\n" 11430 " // clang-format on\n" 11431 " int k;")); 11432 EXPECT_EQ("int i;\n" 11433 "/* clang-format off */\n" 11434 " int j;\n" 11435 "/* clang-format on */\n" 11436 "int k;", 11437 format(" int i;\n" 11438 " /* clang-format off */\n" 11439 " int j;\n" 11440 " /* clang-format on */\n" 11441 " int k;")); 11442 } 11443 11444 TEST_F(FormatTest, DoNotCrashOnInvalidInput) { 11445 format("? ) ="); 11446 verifyNoCrash("#define a\\\n /**/}"); 11447 } 11448 11449 TEST_F(FormatTest, FormatsTableGenCode) { 11450 FormatStyle Style = getLLVMStyle(); 11451 Style.Language = FormatStyle::LK_TableGen; 11452 verifyFormat("include \"a.td\"\ninclude \"b.td\"", Style); 11453 } 11454 11455 // Since this test case uses UNIX-style file path. We disable it for MS 11456 // compiler. 11457 #if !defined(_MSC_VER) && !defined(__MINGW32__) 11458 11459 TEST(FormatStyle, GetStyleOfFile) { 11460 vfs::InMemoryFileSystem FS; 11461 // Test 1: format file in the same directory. 11462 ASSERT_TRUE( 11463 FS.addFile("/a/.clang-format", 0, 11464 llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: LLVM"))); 11465 ASSERT_TRUE( 11466 FS.addFile("/a/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;"))); 11467 auto Style1 = getStyle("file", "/a/.clang-format", "Google", &FS); 11468 ASSERT_EQ(Style1, getLLVMStyle()); 11469 11470 // Test 2: fallback to default. 11471 ASSERT_TRUE( 11472 FS.addFile("/b/test.cpp", 0, llvm::MemoryBuffer::getMemBuffer("int i;"))); 11473 auto Style2 = getStyle("file", "/b/test.cpp", "Mozilla", &FS); 11474 ASSERT_EQ(Style2, getMozillaStyle()); 11475 11476 // Test 3: format file in parent directory. 11477 ASSERT_TRUE( 11478 FS.addFile("/c/.clang-format", 0, 11479 llvm::MemoryBuffer::getMemBuffer("BasedOnStyle: Google"))); 11480 ASSERT_TRUE(FS.addFile("/c/sub/sub/sub/test.cpp", 0, 11481 llvm::MemoryBuffer::getMemBuffer("int i;"))); 11482 auto Style3 = getStyle("file", "/c/sub/sub/sub/test.cpp", "LLVM", &FS); 11483 ASSERT_EQ(Style3, getGoogleStyle()); 11484 } 11485 11486 #endif // _MSC_VER 11487 11488 class ReplacementTest : public ::testing::Test { 11489 protected: 11490 tooling::Replacement createReplacement(SourceLocation Start, unsigned Length, 11491 llvm::StringRef ReplacementText) { 11492 return tooling::Replacement(Context.Sources, Start, Length, 11493 ReplacementText); 11494 } 11495 11496 RewriterTestContext Context; 11497 }; 11498 11499 TEST_F(ReplacementTest, FormatCodeAfterReplacements) { 11500 // Column limit is 20. 11501 std::string Code = "Type *a =\n" 11502 " new Type();\n" 11503 "g(iiiii, 0, jjjjj,\n" 11504 " 0, kkkkk, 0, mm);\n" 11505 "int bad = format ;"; 11506 std::string Expected = "auto a = new Type();\n" 11507 "g(iiiii, nullptr,\n" 11508 " jjjjj, nullptr,\n" 11509 " kkkkk, nullptr,\n" 11510 " mm);\n" 11511 "int bad = format ;"; 11512 FileID ID = Context.createInMemoryFile("format.cpp", Code); 11513 tooling::Replacements Replaces; 11514 Replaces.insert(tooling::Replacement( 11515 Context.Sources, Context.getLocation(ID, 1, 1), 6, "auto ")); 11516 Replaces.insert(tooling::Replacement( 11517 Context.Sources, Context.getLocation(ID, 3, 10), 1, "nullptr")); 11518 Replaces.insert(tooling::Replacement( 11519 Context.Sources, Context.getLocation(ID, 4, 3), 1, "nullptr")); 11520 Replaces.insert(tooling::Replacement( 11521 Context.Sources, Context.getLocation(ID, 4, 13), 1, "nullptr")); 11522 11523 format::FormatStyle Style = format::getLLVMStyle(); 11524 Style.ColumnLimit = 20; // Set column limit to 20 to increase readibility. 11525 EXPECT_EQ(Expected, applyAllReplacements( 11526 Code, formatReplacements(Code, Replaces, Style))); 11527 } 11528 11529 TEST_F(ReplacementTest, FixOnlyAffectedCodeAfterReplacements) { 11530 std::string Code = "namespace A {\n" 11531 "namespace B {\n" 11532 " int x;\n" 11533 "} // namespace B\n" 11534 "} // namespace A\n" 11535 "\n" 11536 "namespace C {\n" 11537 "namespace D { int i; }\n" 11538 "inline namespace E { namespace { int y; } }\n" 11539 "int x= 0;" 11540 "}"; 11541 std::string Expected = "\n\nnamespace C {\n" 11542 "namespace D { int i; }\n\n" 11543 "int x= 0;" 11544 "}"; 11545 FileID ID = Context.createInMemoryFile("fix.cpp", Code); 11546 tooling::Replacements Replaces; 11547 Replaces.insert(tooling::Replacement( 11548 Context.Sources, Context.getLocation(ID, 3, 3), 6, "")); 11549 Replaces.insert(tooling::Replacement( 11550 Context.Sources, Context.getLocation(ID, 9, 34), 6, "")); 11551 11552 format::FormatStyle Style = format::getLLVMStyle(); 11553 auto FinalReplaces = formatReplacements( 11554 Code, cleanupAroundReplacements(Code, Replaces, Style), Style); 11555 EXPECT_EQ(Expected, applyAllReplacements(Code, FinalReplaces)); 11556 } 11557 11558 } // end namespace 11559 } // end namespace format 11560 } // end namespace clang 11561