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