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 /// \brief Verify that clang-format does not crash on the given input. 71 void verifyNoCrash(llvm::StringRef Code, 72 const FormatStyle &Style = getLLVMStyle()) { 73 format(Code, Style); 74 } 75 76 int ReplacementCount; 77 }; 78 79 TEST_F(FormatTest, MessUp) { 80 EXPECT_EQ("1 2 3", test::messUp("1 2 3")); 81 EXPECT_EQ("1 2 3\n", test::messUp("1\n2\n3\n")); 82 EXPECT_EQ("a\n//b\nc", test::messUp("a\n//b\nc")); 83 EXPECT_EQ("a\n#b\nc", test::messUp("a\n#b\nc")); 84 EXPECT_EQ("a\n#b c d\ne", test::messUp("a\n#b\\\nc\\\nd\ne")); 85 } 86 87 //===----------------------------------------------------------------------===// 88 // Basic function tests. 89 //===----------------------------------------------------------------------===// 90 91 TEST_F(FormatTest, DoesNotChangeCorrectlyFormattedCode) { 92 EXPECT_EQ(";", format(";")); 93 } 94 95 TEST_F(FormatTest, FormatsGlobalStatementsAt0) { 96 EXPECT_EQ("int i;", format(" int i;")); 97 EXPECT_EQ("\nint i;", format(" \n\t \v \f int i;")); 98 EXPECT_EQ("int i;\nint j;", format(" int i; int j;")); 99 EXPECT_EQ("int i;\nint j;", format(" int i;\n int j;")); 100 } 101 102 TEST_F(FormatTest, FormatsUnwrappedLinesAtFirstFormat) { 103 EXPECT_EQ("int i;", format("int\ni;")); 104 } 105 106 TEST_F(FormatTest, FormatsNestedBlockStatements) { 107 EXPECT_EQ("{\n {\n {}\n }\n}", format("{{{}}}")); 108 } 109 110 TEST_F(FormatTest, FormatsNestedCall) { 111 verifyFormat("Method(f1, f2(f3));"); 112 verifyFormat("Method(f1(f2, f3()));"); 113 verifyFormat("Method(f1(f2, (f3())));"); 114 } 115 116 TEST_F(FormatTest, NestedNameSpecifiers) { 117 verifyFormat("vector<::Type> v;"); 118 verifyFormat("::ns::SomeFunction(::ns::SomeOtherFunction())"); 119 verifyFormat("static constexpr bool Bar = decltype(bar())::value;"); 120 verifyFormat("bool a = 2 < ::SomeFunction();"); 121 } 122 123 TEST_F(FormatTest, OnlyGeneratesNecessaryReplacements) { 124 EXPECT_EQ("if (a) {\n" 125 " f();\n" 126 "}", 127 format("if(a){f();}")); 128 EXPECT_EQ(4, ReplacementCount); 129 EXPECT_EQ("if (a) {\n" 130 " f();\n" 131 "}", 132 format("if (a) {\n" 133 " f();\n" 134 "}")); 135 EXPECT_EQ(0, ReplacementCount); 136 } 137 138 TEST_F(FormatTest, RemovesTrailingWhitespaceOfFormattedLine) { 139 EXPECT_EQ("int a;\nint b;", format("int a; \nint b;", 0, 0, getLLVMStyle())); 140 EXPECT_EQ("int a;", format("int a; ")); 141 EXPECT_EQ("int a;\n", format("int a; \n \n \n ")); 142 EXPECT_EQ("int a;\nint b; ", 143 format("int a; \nint b; ", 0, 0, getLLVMStyle())); 144 } 145 146 TEST_F(FormatTest, FormatsCorrectRegionForLeadingWhitespace) { 147 EXPECT_EQ("int b;\nint a;", 148 format("int b;\n int a;", 7, 0, getLLVMStyle())); 149 EXPECT_EQ("int b;\n int a;", 150 format("int b;\n int a;", 6, 0, getLLVMStyle())); 151 152 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 26, 0, getLLVMStyleWithColumns(12))); 159 EXPECT_EQ("#define A \\\n" 160 " int a; \\\n" 161 " int b;", 162 format("#define A \\\n" 163 " int a; \\\n" 164 " int b;", 165 25, 0, getLLVMStyleWithColumns(12))); 166 } 167 168 TEST_F(FormatTest, FormatLineWhenInvokedOnTrailingNewline) { 169 EXPECT_EQ("int b;\n\nint a;", 170 format("int b;\n\nint a;", 8, 0, getLLVMStyle())); 171 EXPECT_EQ("int b;\n\nint a;", 172 format("int b;\n\nint a;", 7, 0, getLLVMStyle())); 173 174 // This might not strictly be correct, but is likely good in all practical 175 // cases. 176 EXPECT_EQ("int b;\nint a;", 177 format("int b;int a;", 7, 0, getLLVMStyle())); 178 } 179 180 TEST_F(FormatTest, RemovesWhitespaceWhenTriggeredOnEmptyLine) { 181 EXPECT_EQ("int a;\n\n int b;", 182 format("int a;\n \n\n int b;", 8, 0, getLLVMStyle())); 183 EXPECT_EQ("int a;\n\n int b;", 184 format("int a;\n \n\n int b;", 9, 0, getLLVMStyle())); 185 } 186 187 TEST_F(FormatTest, RemovesEmptyLines) { 188 EXPECT_EQ("class C {\n" 189 " int i;\n" 190 "};", 191 format("class C {\n" 192 " int i;\n" 193 "\n" 194 "};")); 195 196 // Don't remove empty lines at the start of namespaces or extern "C" blocks. 197 EXPECT_EQ("namespace N {\n" 198 "\n" 199 "int i;\n" 200 "}", 201 format("namespace N {\n" 202 "\n" 203 "int i;\n" 204 "}", 205 getGoogleStyle())); 206 EXPECT_EQ("extern /**/ \"C\" /**/ {\n" 207 "\n" 208 "int i;\n" 209 "}", 210 format("extern /**/ \"C\" /**/ {\n" 211 "\n" 212 "int i;\n" 213 "}", 214 getGoogleStyle())); 215 216 // ...but do keep inlining and removing empty lines for non-block extern "C" 217 // functions. 218 verifyFormat("extern \"C\" int f() { return 42; }", getGoogleStyle()); 219 EXPECT_EQ("extern \"C\" int f() {\n" 220 " int i = 42;\n" 221 " return i;\n" 222 "}", 223 format("extern \"C\" int f() {\n" 224 "\n" 225 " int i = 42;\n" 226 " return i;\n" 227 "}", 228 getGoogleStyle())); 229 230 // Remove empty lines at the beginning and end of blocks. 231 EXPECT_EQ("void f() {\n" 232 "\n" 233 " if (a) {\n" 234 "\n" 235 " f();\n" 236 " }\n" 237 "}", 238 format("void f() {\n" 239 "\n" 240 " if (a) {\n" 241 "\n" 242 " f();\n" 243 "\n" 244 " }\n" 245 "\n" 246 "}", 247 getLLVMStyle())); 248 EXPECT_EQ("void f() {\n" 249 " if (a) {\n" 250 " f();\n" 251 " }\n" 252 "}", 253 format("void f() {\n" 254 "\n" 255 " if (a) {\n" 256 "\n" 257 " f();\n" 258 "\n" 259 " }\n" 260 "\n" 261 "}", 262 getGoogleStyle())); 263 264 // Don't remove empty lines in more complex control statements. 265 EXPECT_EQ("void f() {\n" 266 " if (a) {\n" 267 " f();\n" 268 "\n" 269 " } else if (b) {\n" 270 " f();\n" 271 " }\n" 272 "}", 273 format("void f() {\n" 274 " if (a) {\n" 275 " f();\n" 276 "\n" 277 " } else if (b) {\n" 278 " f();\n" 279 "\n" 280 " }\n" 281 "\n" 282 "}")); 283 284 // FIXME: This is slightly inconsistent. 285 EXPECT_EQ("namespace {\n" 286 "int i;\n" 287 "}", 288 format("namespace {\n" 289 "int i;\n" 290 "\n" 291 "}")); 292 EXPECT_EQ("namespace {\n" 293 "int i;\n" 294 "\n" 295 "} // namespace", 296 format("namespace {\n" 297 "int i;\n" 298 "\n" 299 "} // namespace")); 300 } 301 302 TEST_F(FormatTest, ReformatsMovedLines) { 303 EXPECT_EQ( 304 "template <typename T> T *getFETokenInfo() const {\n" 305 " return static_cast<T *>(FETokenInfo);\n" 306 "}\n" 307 " int a; // <- Should not be formatted", 308 format( 309 "template<typename T>\n" 310 "T *getFETokenInfo() const { return static_cast<T*>(FETokenInfo); }\n" 311 " int a; // <- Should not be formatted", 312 9, 5, getLLVMStyle())); 313 } 314 315 TEST_F(FormatTest, RecognizesBinaryOperatorKeywords) { 316 verifyFormat("x = (a) and (b);"); 317 verifyFormat("x = (a) or (b);"); 318 verifyFormat("x = (a) bitand (b);"); 319 verifyFormat("x = (a) bitor (b);"); 320 verifyFormat("x = (a) not_eq (b);"); 321 verifyFormat("x = (a) and_eq (b);"); 322 verifyFormat("x = (a) or_eq (b);"); 323 verifyFormat("x = (a) xor (b);"); 324 } 325 326 //===----------------------------------------------------------------------===// 327 // Tests for control statements. 328 //===----------------------------------------------------------------------===// 329 330 TEST_F(FormatTest, FormatIfWithoutCompoundStatement) { 331 verifyFormat("if (true)\n f();\ng();"); 332 verifyFormat("if (a)\n if (b)\n if (c)\n g();\nh();"); 333 verifyFormat("if (a)\n if (b) {\n f();\n }\ng();"); 334 335 FormatStyle AllowsMergedIf = getLLVMStyle(); 336 AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; 337 verifyFormat("if (a)\n" 338 " // comment\n" 339 " f();", 340 AllowsMergedIf); 341 verifyFormat("if (a)\n" 342 " ;", 343 AllowsMergedIf); 344 verifyFormat("if (a)\n" 345 " if (b) return;", 346 AllowsMergedIf); 347 348 verifyFormat("if (a) // Can't merge this\n" 349 " f();\n", 350 AllowsMergedIf); 351 verifyFormat("if (a) /* still don't merge */\n" 352 " f();", 353 AllowsMergedIf); 354 verifyFormat("if (a) { // Never merge this\n" 355 " f();\n" 356 "}", 357 AllowsMergedIf); 358 verifyFormat("if (a) {/* Never merge this */\n" 359 " f();\n" 360 "}", 361 AllowsMergedIf); 362 363 EXPECT_EQ("if (a) return;", format("if(a)\nreturn;", 7, 1, AllowsMergedIf)); 364 EXPECT_EQ("if (a) return; // comment", 365 format("if(a)\nreturn; // comment", 20, 1, AllowsMergedIf)); 366 367 AllowsMergedIf.ColumnLimit = 14; 368 verifyFormat("if (a) return;", AllowsMergedIf); 369 verifyFormat("if (aaaaaaaaa)\n" 370 " return;", 371 AllowsMergedIf); 372 373 AllowsMergedIf.ColumnLimit = 13; 374 verifyFormat("if (a)\n return;", AllowsMergedIf); 375 } 376 377 TEST_F(FormatTest, FormatLoopsWithoutCompoundStatement) { 378 FormatStyle AllowsMergedLoops = getLLVMStyle(); 379 AllowsMergedLoops.AllowShortLoopsOnASingleLine = true; 380 verifyFormat("while (true) continue;", AllowsMergedLoops); 381 verifyFormat("for (;;) continue;", AllowsMergedLoops); 382 verifyFormat("for (int &v : vec) v *= 2;", AllowsMergedLoops); 383 verifyFormat("while (true)\n" 384 " ;", 385 AllowsMergedLoops); 386 verifyFormat("for (;;)\n" 387 " ;", 388 AllowsMergedLoops); 389 verifyFormat("for (;;)\n" 390 " for (;;) continue;", 391 AllowsMergedLoops); 392 verifyFormat("for (;;) // Can't merge this\n" 393 " continue;", 394 AllowsMergedLoops); 395 verifyFormat("for (;;) /* still don't merge */\n" 396 " continue;", 397 AllowsMergedLoops); 398 } 399 400 TEST_F(FormatTest, FormatShortBracedStatements) { 401 FormatStyle AllowSimpleBracedStatements = getLLVMStyle(); 402 AllowSimpleBracedStatements.AllowShortBlocksOnASingleLine = true; 403 404 AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = true; 405 AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = true; 406 407 verifyFormat("if (true) {}", AllowSimpleBracedStatements); 408 verifyFormat("while (true) {}", AllowSimpleBracedStatements); 409 verifyFormat("for (;;) {}", AllowSimpleBracedStatements); 410 verifyFormat("if (true) { f(); }", AllowSimpleBracedStatements); 411 verifyFormat("while (true) { f(); }", AllowSimpleBracedStatements); 412 verifyFormat("for (;;) { f(); }", AllowSimpleBracedStatements); 413 verifyFormat("if (true) { //\n" 414 " f();\n" 415 "}", 416 AllowSimpleBracedStatements); 417 verifyFormat("if (true) {\n" 418 " f();\n" 419 " f();\n" 420 "}", 421 AllowSimpleBracedStatements); 422 423 verifyFormat("template <int> struct A2 {\n" 424 " struct B {};\n" 425 "};", 426 AllowSimpleBracedStatements); 427 428 AllowSimpleBracedStatements.AllowShortIfStatementsOnASingleLine = false; 429 verifyFormat("if (true) {\n" 430 " f();\n" 431 "}", 432 AllowSimpleBracedStatements); 433 434 AllowSimpleBracedStatements.AllowShortLoopsOnASingleLine = false; 435 verifyFormat("while (true) {\n" 436 " f();\n" 437 "}", 438 AllowSimpleBracedStatements); 439 verifyFormat("for (;;) {\n" 440 " f();\n" 441 "}", 442 AllowSimpleBracedStatements); 443 } 444 445 TEST_F(FormatTest, ParseIfElse) { 446 verifyFormat("if (true)\n" 447 " if (true)\n" 448 " if (true)\n" 449 " f();\n" 450 " else\n" 451 " g();\n" 452 " else\n" 453 " h();\n" 454 "else\n" 455 " i();"); 456 verifyFormat("if (true)\n" 457 " if (true)\n" 458 " if (true) {\n" 459 " if (true)\n" 460 " f();\n" 461 " } else {\n" 462 " g();\n" 463 " }\n" 464 " else\n" 465 " h();\n" 466 "else {\n" 467 " i();\n" 468 "}"); 469 verifyFormat("void f() {\n" 470 " if (a) {\n" 471 " } else {\n" 472 " }\n" 473 "}"); 474 } 475 476 TEST_F(FormatTest, ElseIf) { 477 verifyFormat("if (a) {\n} else if (b) {\n}"); 478 verifyFormat("if (a)\n" 479 " f();\n" 480 "else if (b)\n" 481 " g();\n" 482 "else\n" 483 " h();"); 484 verifyFormat("if (a) {\n" 485 " f();\n" 486 "}\n" 487 "// or else ..\n" 488 "else {\n" 489 " g()\n" 490 "}"); 491 492 verifyFormat("if (a) {\n" 493 "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 494 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" 495 "}"); 496 verifyFormat("if (a) {\n" 497 "} else if (\n" 498 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 499 "}", 500 getLLVMStyleWithColumns(62)); 501 } 502 503 TEST_F(FormatTest, FormatsForLoop) { 504 verifyFormat( 505 "for (int VeryVeryLongLoopVariable = 0; VeryVeryLongLoopVariable < 10;\n" 506 " ++VeryVeryLongLoopVariable)\n" 507 " ;"); 508 verifyFormat("for (;;)\n" 509 " f();"); 510 verifyFormat("for (;;) {\n}"); 511 verifyFormat("for (;;) {\n" 512 " f();\n" 513 "}"); 514 verifyFormat("for (int i = 0; (i < 10); ++i) {\n}"); 515 516 verifyFormat( 517 "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n" 518 " E = UnwrappedLines.end();\n" 519 " I != E; ++I) {\n}"); 520 521 verifyFormat( 522 "for (MachineFun::iterator IIII = PrevIt, EEEE = F.end(); IIII != EEEE;\n" 523 " ++IIIII) {\n}"); 524 verifyFormat("for (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaa =\n" 525 " aaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa;\n" 526 " aaaaaaaaaaa != aaaaaaaaaaaaaaaaaaa; ++aaaaaaaaaaa) {\n}"); 527 verifyFormat("for (llvm::ArrayRef<NamedDecl *>::iterator\n" 528 " I = FD->getDeclsInPrototypeScope().begin(),\n" 529 " E = FD->getDeclsInPrototypeScope().end();\n" 530 " I != E; ++I) {\n}"); 531 532 verifyFormat( 533 "for (aaaaaaaaaaaaaaaaa aaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" 534 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa !=\n" 535 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 536 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 537 " ++aaaaaaaaaaa) {\n}"); 538 verifyFormat("for (int i = 0; i < aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 539 " bbbbbbbbbbbbbbbbbbbb < ccccccccccccccc;\n" 540 " ++i) {\n}"); 541 verifyFormat("for (int aaaaaaaaaaa = 1; aaaaaaaaaaa <= bbbbbbbbbbbbbbb;\n" 542 " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" 543 "}"); 544 verifyFormat("for (some_namespace::SomeIterator iter( // force break\n" 545 " aaaaaaaaaa);\n" 546 " iter; ++iter) {\n" 547 "}"); 548 549 FormatStyle NoBinPacking = getLLVMStyle(); 550 NoBinPacking.BinPackParameters = false; 551 verifyFormat("for (int aaaaaaaaaaa = 1;\n" 552 " aaaaaaaaaaa <= aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa,\n" 553 " aaaaaaaaaaaaaaaa,\n" 554 " aaaaaaaaaaaaaaaa,\n" 555 " aaaaaaaaaaaaaaaa);\n" 556 " aaaaaaaaaaa++, bbbbbbbbbbbbbbbbb++) {\n" 557 "}", 558 NoBinPacking); 559 verifyFormat( 560 "for (std::vector<UnwrappedLine>::iterator I = UnwrappedLines.begin(),\n" 561 " E = UnwrappedLines.end();\n" 562 " I != E;\n" 563 " ++I) {\n}", 564 NoBinPacking); 565 } 566 567 TEST_F(FormatTest, RangeBasedForLoops) { 568 verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 569 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 570 verifyFormat("for (auto aaaaaaaaaaaaaaaaaaaaa :\n" 571 " aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa, aaaaaaaaaaaaa)) {\n}"); 572 verifyFormat("for (const aaaaaaaaaaaaaaaaaaaaa &aaaaaaaaa :\n" 573 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 574 verifyFormat("for (aaaaaaaaa aaaaaaaaaaaaaaaaaaaaa :\n" 575 " aaaaaaaaaaaa.aaaaaaaaaaaa().aaaaaaaaa().a()) {\n}"); 576 } 577 578 TEST_F(FormatTest, ForEachLoops) { 579 verifyFormat("void f() {\n" 580 " foreach (Item *item, itemlist) {}\n" 581 " Q_FOREACH (Item *item, itemlist) {}\n" 582 " BOOST_FOREACH (Item *item, itemlist) {}\n" 583 " UNKNOWN_FORACH(Item * item, itemlist) {}\n" 584 "}"); 585 } 586 587 TEST_F(FormatTest, FormatsWhileLoop) { 588 verifyFormat("while (true) {\n}"); 589 verifyFormat("while (true)\n" 590 " f();"); 591 verifyFormat("while () {\n}"); 592 verifyFormat("while () {\n" 593 " f();\n" 594 "}"); 595 } 596 597 TEST_F(FormatTest, FormatsDoWhile) { 598 verifyFormat("do {\n" 599 " do_something();\n" 600 "} while (something());"); 601 verifyFormat("do\n" 602 " do_something();\n" 603 "while (something());"); 604 } 605 606 TEST_F(FormatTest, FormatsSwitchStatement) { 607 verifyFormat("switch (x) {\n" 608 "case 1:\n" 609 " f();\n" 610 " break;\n" 611 "case kFoo:\n" 612 "case ns::kBar:\n" 613 "case kBaz:\n" 614 " break;\n" 615 "default:\n" 616 " g();\n" 617 " break;\n" 618 "}"); 619 verifyFormat("switch (x) {\n" 620 "case 1: {\n" 621 " f();\n" 622 " break;\n" 623 "}\n" 624 "case 2: {\n" 625 " break;\n" 626 "}\n" 627 "}"); 628 verifyFormat("switch (x) {\n" 629 "case 1: {\n" 630 " f();\n" 631 " {\n" 632 " g();\n" 633 " h();\n" 634 " }\n" 635 " break;\n" 636 "}\n" 637 "}"); 638 verifyFormat("switch (x) {\n" 639 "case 1: {\n" 640 " f();\n" 641 " if (foo) {\n" 642 " g();\n" 643 " h();\n" 644 " }\n" 645 " break;\n" 646 "}\n" 647 "}"); 648 verifyFormat("switch (x) {\n" 649 "case 1: {\n" 650 " f();\n" 651 " g();\n" 652 "} break;\n" 653 "}"); 654 verifyFormat("switch (test)\n" 655 " ;"); 656 verifyFormat("switch (x) {\n" 657 "default: {\n" 658 " // Do nothing.\n" 659 "}\n" 660 "}"); 661 verifyFormat("switch (x) {\n" 662 "// comment\n" 663 "// if 1, do f()\n" 664 "case 1:\n" 665 " f();\n" 666 "}"); 667 verifyFormat("switch (x) {\n" 668 "case 1:\n" 669 " // Do amazing stuff\n" 670 " {\n" 671 " f();\n" 672 " g();\n" 673 " }\n" 674 " break;\n" 675 "}"); 676 verifyFormat("#define A \\\n" 677 " switch (x) { \\\n" 678 " case a: \\\n" 679 " foo = b; \\\n" 680 " }", getLLVMStyleWithColumns(20)); 681 verifyFormat("#define OPERATION_CASE(name) \\\n" 682 " case OP_name: \\\n" 683 " return operations::Operation##name\n", 684 getLLVMStyleWithColumns(40)); 685 686 verifyGoogleFormat("switch (x) {\n" 687 " case 1:\n" 688 " f();\n" 689 " break;\n" 690 " case kFoo:\n" 691 " case ns::kBar:\n" 692 " case kBaz:\n" 693 " break;\n" 694 " default:\n" 695 " g();\n" 696 " break;\n" 697 "}"); 698 verifyGoogleFormat("switch (x) {\n" 699 " case 1: {\n" 700 " f();\n" 701 " break;\n" 702 " }\n" 703 "}"); 704 verifyGoogleFormat("switch (test)\n" 705 " ;"); 706 707 verifyGoogleFormat("#define OPERATION_CASE(name) \\\n" 708 " case OP_name: \\\n" 709 " return operations::Operation##name\n"); 710 verifyGoogleFormat("Operation codeToOperation(OperationCode OpCode) {\n" 711 " // Get the correction operation class.\n" 712 " switch (OpCode) {\n" 713 " CASE(Add);\n" 714 " CASE(Subtract);\n" 715 " default:\n" 716 " return operations::Unknown;\n" 717 " }\n" 718 "#undef OPERATION_CASE\n" 719 "}"); 720 verifyFormat("DEBUG({\n" 721 " switch (x) {\n" 722 " case A:\n" 723 " f();\n" 724 " break;\n" 725 " // On B:\n" 726 " case B:\n" 727 " g();\n" 728 " break;\n" 729 " }\n" 730 "});"); 731 verifyFormat("switch (a) {\n" 732 "case (b):\n" 733 " return;\n" 734 "}"); 735 736 verifyFormat("switch (a) {\n" 737 "case some_namespace::\n" 738 " some_constant:\n" 739 " return;\n" 740 "}", 741 getLLVMStyleWithColumns(34)); 742 } 743 744 TEST_F(FormatTest, CaseRanges) { 745 verifyFormat("switch (x) {\n" 746 "case 'A' ... 'Z':\n" 747 "case 1 ... 5:\n" 748 " break;\n" 749 "}"); 750 } 751 752 TEST_F(FormatTest, ShortCaseLabels) { 753 FormatStyle Style = getLLVMStyle(); 754 Style.AllowShortCaseLabelsOnASingleLine = true; 755 verifyFormat("switch (a) {\n" 756 "case 1: x = 1; break;\n" 757 "case 2: return;\n" 758 "case 3:\n" 759 "case 4:\n" 760 "case 5: return;\n" 761 "case 6: // comment\n" 762 " return;\n" 763 "case 7:\n" 764 " // comment\n" 765 " return;\n" 766 "default: y = 1; break;\n" 767 "}", 768 Style); 769 verifyFormat("switch (a) {\n" 770 "#if FOO\n" 771 "case 0: return 0;\n" 772 "#endif\n" 773 "}", 774 Style); 775 verifyFormat("switch (a) {\n" 776 "case 1: {\n" 777 "}\n" 778 "case 2: {\n" 779 " return;\n" 780 "}\n" 781 "case 3: {\n" 782 " x = 1;\n" 783 " return;\n" 784 "}\n" 785 "case 4:\n" 786 " if (x)\n" 787 " return;\n" 788 "}", 789 Style); 790 Style.ColumnLimit = 21; 791 verifyFormat("switch (a) {\n" 792 "case 1: x = 1; break;\n" 793 "case 2: return;\n" 794 "case 3:\n" 795 "case 4:\n" 796 "case 5: return;\n" 797 "default:\n" 798 " y = 1;\n" 799 " break;\n" 800 "}", 801 Style); 802 } 803 804 TEST_F(FormatTest, FormatsLabels) { 805 verifyFormat("void f() {\n" 806 " some_code();\n" 807 "test_label:\n" 808 " some_other_code();\n" 809 " {\n" 810 " some_more_code();\n" 811 " another_label:\n" 812 " some_more_code();\n" 813 " }\n" 814 "}"); 815 verifyFormat("some_code();\n" 816 "test_label:\n" 817 "some_other_code();"); 818 } 819 820 //===----------------------------------------------------------------------===// 821 // Tests for comments. 822 //===----------------------------------------------------------------------===// 823 824 TEST_F(FormatTest, UnderstandsSingleLineComments) { 825 verifyFormat("//* */"); 826 verifyFormat("// line 1\n" 827 "// line 2\n" 828 "void f() {}\n"); 829 830 verifyFormat("void f() {\n" 831 " // Doesn't do anything\n" 832 "}"); 833 verifyFormat("SomeObject\n" 834 " // Calling someFunction on SomeObject\n" 835 " .someFunction();"); 836 verifyFormat("auto result = SomeObject\n" 837 " // Calling someFunction on SomeObject\n" 838 " .someFunction();"); 839 verifyFormat("void f(int i, // some comment (probably for i)\n" 840 " int j, // some comment (probably for j)\n" 841 " int k); // some comment (probably for k)"); 842 verifyFormat("void f(int i,\n" 843 " // some comment (probably for j)\n" 844 " int j,\n" 845 " // some comment (probably for k)\n" 846 " int k);"); 847 848 verifyFormat("int i // This is a fancy variable\n" 849 " = 5; // with nicely aligned comment."); 850 851 verifyFormat("// Leading comment.\n" 852 "int a; // Trailing comment."); 853 verifyFormat("int a; // Trailing comment\n" 854 " // on 2\n" 855 " // or 3 lines.\n" 856 "int b;"); 857 verifyFormat("int a; // Trailing comment\n" 858 "\n" 859 "// Leading comment.\n" 860 "int b;"); 861 verifyFormat("int a; // Comment.\n" 862 " // More details.\n" 863 "int bbbb; // Another comment."); 864 verifyFormat( 865 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 866 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // comment\n" 867 "int cccccccccccccccccccccccccccccc; // comment\n" 868 "int ddd; // looooooooooooooooooooooooong comment\n" 869 "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 870 "int bbbbbbbbbbbbbbbbbbbbb; // comment\n" 871 "int ccccccccccccccccccc; // comment"); 872 873 verifyFormat("#include \"a\" // comment\n" 874 "#include \"a/b/c\" // comment"); 875 verifyFormat("#include <a> // comment\n" 876 "#include <a/b/c> // comment"); 877 EXPECT_EQ("#include \"a\" // comment\n" 878 "#include \"a/b/c\" // comment", 879 format("#include \\\n" 880 " \"a\" // comment\n" 881 "#include \"a/b/c\" // comment")); 882 883 verifyFormat("enum E {\n" 884 " // comment\n" 885 " VAL_A, // comment\n" 886 " VAL_B\n" 887 "};"); 888 889 verifyFormat( 890 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 891 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment"); 892 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 893 " // Comment inside a statement.\n" 894 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 895 verifyFormat("SomeFunction(a,\n" 896 " // comment\n" 897 " b + x);"); 898 verifyFormat("SomeFunction(a, a,\n" 899 " // comment\n" 900 " b + x);"); 901 verifyFormat( 902 "bool aaaaaaaaaaaaa = // comment\n" 903 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 904 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 905 906 verifyFormat("int aaaa; // aaaaa\n" 907 "int aa; // aaaaaaa", 908 getLLVMStyleWithColumns(20)); 909 910 EXPECT_EQ("void f() { // This does something ..\n" 911 "}\n" 912 "int a; // This is unrelated", 913 format("void f() { // This does something ..\n" 914 " }\n" 915 "int a; // This is unrelated")); 916 EXPECT_EQ("class C {\n" 917 " void f() { // This does something ..\n" 918 " } // awesome..\n" 919 "\n" 920 " int a; // This is unrelated\n" 921 "};", 922 format("class C{void f() { // This does something ..\n" 923 " } // awesome..\n" 924 " \n" 925 "int a; // This is unrelated\n" 926 "};")); 927 928 EXPECT_EQ("int i; // single line trailing comment", 929 format("int i;\\\n// single line trailing comment")); 930 931 verifyGoogleFormat("int a; // Trailing comment."); 932 933 verifyFormat("someFunction(anotherFunction( // Force break.\n" 934 " parameter));"); 935 936 verifyGoogleFormat("#endif // HEADER_GUARD"); 937 938 verifyFormat("const char *test[] = {\n" 939 " // A\n" 940 " \"aaaa\",\n" 941 " // B\n" 942 " \"aaaaa\"};"); 943 verifyGoogleFormat( 944 "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 945 " aaaaaaaaaaaaaaaaaaaaaa); // 81_cols_with_this_comment"); 946 EXPECT_EQ("D(a, {\n" 947 " // test\n" 948 " int a;\n" 949 "});", 950 format("D(a, {\n" 951 "// test\n" 952 "int a;\n" 953 "});")); 954 955 EXPECT_EQ("lineWith(); // comment\n" 956 "// at start\n" 957 "otherLine();", 958 format("lineWith(); // comment\n" 959 "// at start\n" 960 "otherLine();")); 961 EXPECT_EQ("lineWith(); // comment\n" 962 " // at start\n" 963 "otherLine();", 964 format("lineWith(); // comment\n" 965 " // at start\n" 966 "otherLine();")); 967 968 EXPECT_EQ("lineWith(); // comment\n" 969 "// at start\n" 970 "otherLine(); // comment", 971 format("lineWith(); // comment\n" 972 "// at start\n" 973 "otherLine(); // comment")); 974 EXPECT_EQ("lineWith();\n" 975 "// at start\n" 976 "otherLine(); // comment", 977 format("lineWith();\n" 978 " // at start\n" 979 "otherLine(); // comment")); 980 EXPECT_EQ("// first\n" 981 "// at start\n" 982 "otherLine(); // comment", 983 format("// first\n" 984 " // at start\n" 985 "otherLine(); // comment")); 986 EXPECT_EQ("f();\n" 987 "// first\n" 988 "// at start\n" 989 "otherLine(); // comment", 990 format("f();\n" 991 "// first\n" 992 " // at start\n" 993 "otherLine(); // comment")); 994 verifyFormat("f(); // comment\n" 995 "// first\n" 996 "// at start\n" 997 "otherLine();"); 998 EXPECT_EQ("f(); // comment\n" 999 "// first\n" 1000 "// at start\n" 1001 "otherLine();", 1002 format("f(); // comment\n" 1003 "// first\n" 1004 " // at start\n" 1005 "otherLine();")); 1006 EXPECT_EQ("f(); // comment\n" 1007 " // first\n" 1008 "// at start\n" 1009 "otherLine();", 1010 format("f(); // comment\n" 1011 " // first\n" 1012 "// at start\n" 1013 "otherLine();")); 1014 EXPECT_EQ("void f() {\n" 1015 " lineWith(); // comment\n" 1016 " // at start\n" 1017 "}", 1018 format("void f() {\n" 1019 " lineWith(); // comment\n" 1020 " // at start\n" 1021 "}")); 1022 1023 verifyFormat( 1024 "#define A \\\n" 1025 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 1026 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 1027 getLLVMStyleWithColumns(60)); 1028 verifyFormat( 1029 "#define A \\\n" 1030 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 1031 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 1032 getLLVMStyleWithColumns(61)); 1033 1034 verifyFormat("if ( // This is some comment\n" 1035 " x + 3) {\n" 1036 "}"); 1037 EXPECT_EQ("if ( // This is some comment\n" 1038 " // spanning two lines\n" 1039 " x + 3) {\n" 1040 "}", 1041 format("if( // This is some comment\n" 1042 " // spanning two lines\n" 1043 " x + 3) {\n" 1044 "}")); 1045 1046 verifyNoCrash("/\\\n/"); 1047 verifyNoCrash("/\\\n* */"); 1048 } 1049 1050 TEST_F(FormatTest, KeepsParameterWithTrailingCommentsOnTheirOwnLine) { 1051 EXPECT_EQ("SomeFunction(a,\n" 1052 " b, // comment\n" 1053 " c);", 1054 format("SomeFunction(a,\n" 1055 " b, // comment\n" 1056 " c);")); 1057 EXPECT_EQ("SomeFunction(a, b,\n" 1058 " // comment\n" 1059 " c);", 1060 format("SomeFunction(a,\n" 1061 " b,\n" 1062 " // comment\n" 1063 " c);")); 1064 EXPECT_EQ("SomeFunction(a, b, // comment (unclear relation)\n" 1065 " c);", 1066 format("SomeFunction(a, b, // comment (unclear relation)\n" 1067 " c);")); 1068 EXPECT_EQ("SomeFunction(a, // comment\n" 1069 " b,\n" 1070 " c); // comment", 1071 format("SomeFunction(a, // comment\n" 1072 " b,\n" 1073 " c); // comment")); 1074 } 1075 1076 TEST_F(FormatTest, CanFormatCommentsLocally) { 1077 EXPECT_EQ("int a; // comment\n" 1078 "int b; // comment", 1079 format("int a; // comment\n" 1080 "int b; // comment", 1081 0, 0, getLLVMStyle())); 1082 EXPECT_EQ("int a; // comment\n" 1083 " // line 2\n" 1084 "int b;", 1085 format("int a; // comment\n" 1086 " // line 2\n" 1087 "int b;", 1088 28, 0, getLLVMStyle())); 1089 EXPECT_EQ("int aaaaaa; // comment\n" 1090 "int b;\n" 1091 "int c; // unrelated comment", 1092 format("int aaaaaa; // comment\n" 1093 "int b;\n" 1094 "int c; // unrelated comment", 1095 31, 0, getLLVMStyle())); 1096 1097 EXPECT_EQ("int a; // This\n" 1098 " // is\n" 1099 " // a", 1100 format("int a; // This\n" 1101 " // is\n" 1102 " // a", 1103 0, 0, getLLVMStyle())); 1104 EXPECT_EQ("int a; // This\n" 1105 " // is\n" 1106 " // a\n" 1107 "// This is b\n" 1108 "int b;", 1109 format("int a; // This\n" 1110 " // is\n" 1111 " // a\n" 1112 "// This is b\n" 1113 "int b;", 1114 0, 0, getLLVMStyle())); 1115 EXPECT_EQ("int a; // This\n" 1116 " // is\n" 1117 " // a\n" 1118 "\n" 1119 " // This is unrelated", 1120 format("int a; // This\n" 1121 " // is\n" 1122 " // a\n" 1123 "\n" 1124 " // This is unrelated", 1125 0, 0, getLLVMStyle())); 1126 EXPECT_EQ("int a;\n" 1127 "// This is\n" 1128 "// not formatted. ", 1129 format("int a;\n" 1130 "// This is\n" 1131 "// not formatted. ", 1132 0, 0, getLLVMStyle())); 1133 } 1134 1135 TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) { 1136 EXPECT_EQ("// comment", format("// comment ")); 1137 EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment", 1138 format("int aaaaaaa, bbbbbbb; // comment ", 1139 getLLVMStyleWithColumns(33))); 1140 EXPECT_EQ("// comment\\\n", format("// comment\\\n \t \v \f ")); 1141 EXPECT_EQ("// comment \\\n", format("// comment \\\n \t \v \f ")); 1142 } 1143 1144 TEST_F(FormatTest, UnderstandsBlockComments) { 1145 verifyFormat("f(/*noSpaceAfterParameterNamingComment=*/true);"); 1146 verifyFormat("void f() { g(/*aaa=*/x, /*bbb=*/!y); }"); 1147 EXPECT_EQ("f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n" 1148 " bbbbbbbbbbbbbbbbbbbbbbbbb);", 1149 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \\\n" 1150 "/* Trailing comment for aa... */\n" 1151 " bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1152 EXPECT_EQ( 1153 "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1154 " /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);", 1155 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \n" 1156 "/* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1157 EXPECT_EQ( 1158 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1159 " aaaaaaaaaaaaaaaaaa,\n" 1160 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1161 "}", 1162 format("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1163 " aaaaaaaaaaaaaaaaaa ,\n" 1164 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1165 "}")); 1166 1167 FormatStyle NoBinPacking = getLLVMStyle(); 1168 NoBinPacking.BinPackParameters = false; 1169 verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n" 1170 " /* parameter 2 */ aaaaaa,\n" 1171 " /* parameter 3 */ aaaaaa,\n" 1172 " /* parameter 4 */ aaaaaa);", 1173 NoBinPacking); 1174 1175 // Aligning block comments in macros. 1176 verifyGoogleFormat("#define A \\\n" 1177 " int i; /*a*/ \\\n" 1178 " int jjj; /*b*/"); 1179 } 1180 1181 TEST_F(FormatTest, AlignsBlockComments) { 1182 EXPECT_EQ("/*\n" 1183 " * Really multi-line\n" 1184 " * comment.\n" 1185 " */\n" 1186 "void f() {}", 1187 format(" /*\n" 1188 " * Really multi-line\n" 1189 " * comment.\n" 1190 " */\n" 1191 " void f() {}")); 1192 EXPECT_EQ("class C {\n" 1193 " /*\n" 1194 " * Another multi-line\n" 1195 " * comment.\n" 1196 " */\n" 1197 " void f() {}\n" 1198 "};", 1199 format("class C {\n" 1200 "/*\n" 1201 " * Another multi-line\n" 1202 " * comment.\n" 1203 " */\n" 1204 "void f() {}\n" 1205 "};")); 1206 EXPECT_EQ("/*\n" 1207 " 1. This is a comment with non-trivial formatting.\n" 1208 " 1.1. We have to indent/outdent all lines equally\n" 1209 " 1.1.1. to keep the formatting.\n" 1210 " */", 1211 format(" /*\n" 1212 " 1. This is a comment with non-trivial formatting.\n" 1213 " 1.1. We have to indent/outdent all lines equally\n" 1214 " 1.1.1. to keep the formatting.\n" 1215 " */")); 1216 EXPECT_EQ("/*\n" 1217 "Don't try to outdent if there's not enough indentation.\n" 1218 "*/", 1219 format(" /*\n" 1220 " Don't try to outdent if there's not enough indentation.\n" 1221 " */")); 1222 1223 EXPECT_EQ("int i; /* Comment with empty...\n" 1224 " *\n" 1225 " * line. */", 1226 format("int i; /* Comment with empty...\n" 1227 " *\n" 1228 " * line. */")); 1229 EXPECT_EQ("int foobar = 0; /* comment */\n" 1230 "int bar = 0; /* multiline\n" 1231 " comment 1 */\n" 1232 "int baz = 0; /* multiline\n" 1233 " comment 2 */\n" 1234 "int bzz = 0; /* multiline\n" 1235 " comment 3 */", 1236 format("int foobar = 0; /* comment */\n" 1237 "int bar = 0; /* multiline\n" 1238 " comment 1 */\n" 1239 "int baz = 0; /* multiline\n" 1240 " comment 2 */\n" 1241 "int bzz = 0; /* multiline\n" 1242 " comment 3 */")); 1243 EXPECT_EQ("int foobar = 0; /* comment */\n" 1244 "int bar = 0; /* multiline\n" 1245 " comment */\n" 1246 "int baz = 0; /* multiline\n" 1247 "comment */", 1248 format("int foobar = 0; /* comment */\n" 1249 "int bar = 0; /* multiline\n" 1250 "comment */\n" 1251 "int baz = 0; /* multiline\n" 1252 "comment */")); 1253 } 1254 1255 TEST_F(FormatTest, CorrectlyHandlesLengthOfBlockComments) { 1256 EXPECT_EQ("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1257 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */", 1258 format("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1259 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */")); 1260 EXPECT_EQ( 1261 "void ffffffffffff(\n" 1262 " int aaaaaaaa, int bbbbbbbb,\n" 1263 " int cccccccccccc) { /*\n" 1264 " aaaaaaaaaa\n" 1265 " aaaaaaaaaaaaa\n" 1266 " bbbbbbbbbbbbbb\n" 1267 " bbbbbbbbbb\n" 1268 " */\n" 1269 "}", 1270 format("void ffffffffffff(int aaaaaaaa, int bbbbbbbb, int cccccccccccc)\n" 1271 "{ /*\n" 1272 " aaaaaaaaaa aaaaaaaaaaaaa\n" 1273 " bbbbbbbbbbbbbb bbbbbbbbbb\n" 1274 " */\n" 1275 "}", 1276 getLLVMStyleWithColumns(40))); 1277 } 1278 1279 TEST_F(FormatTest, DontBreakNonTrailingBlockComments) { 1280 EXPECT_EQ("void ffffffffff(\n" 1281 " int aaaaa /* test */);", 1282 format("void ffffffffff(int aaaaa /* test */);", 1283 getLLVMStyleWithColumns(35))); 1284 } 1285 1286 TEST_F(FormatTest, SplitsLongCxxComments) { 1287 EXPECT_EQ("// A comment that\n" 1288 "// doesn't fit on\n" 1289 "// one line", 1290 format("// A comment that doesn't fit on one line", 1291 getLLVMStyleWithColumns(20))); 1292 EXPECT_EQ("// a b c d\n" 1293 "// e f g\n" 1294 "// h i j k", 1295 format("// a b c d e f g h i j k", 1296 getLLVMStyleWithColumns(10))); 1297 EXPECT_EQ("// a b c d\n" 1298 "// e f g\n" 1299 "// h i j k", 1300 format("\\\n// a b c d e f g h i j k", 1301 getLLVMStyleWithColumns(10))); 1302 EXPECT_EQ("if (true) // A comment that\n" 1303 " // doesn't fit on\n" 1304 " // one line", 1305 format("if (true) // A comment that doesn't fit on one line ", 1306 getLLVMStyleWithColumns(30))); 1307 EXPECT_EQ("// Don't_touch_leading_whitespace", 1308 format("// Don't_touch_leading_whitespace", 1309 getLLVMStyleWithColumns(20))); 1310 EXPECT_EQ("// Add leading\n" 1311 "// whitespace", 1312 format("//Add leading whitespace", getLLVMStyleWithColumns(20))); 1313 EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle())); 1314 EXPECT_EQ("// Even if it makes the line exceed the column\n" 1315 "// limit", 1316 format("//Even if it makes the line exceed the column limit", 1317 getLLVMStyleWithColumns(51))); 1318 EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle())); 1319 1320 EXPECT_EQ("// aa bb cc dd", 1321 format("// aa bb cc dd ", 1322 getLLVMStyleWithColumns(15))); 1323 1324 EXPECT_EQ("// A comment before\n" 1325 "// a macro\n" 1326 "// definition\n" 1327 "#define a b", 1328 format("// A comment before a macro definition\n" 1329 "#define a b", 1330 getLLVMStyleWithColumns(20))); 1331 EXPECT_EQ("void ffffff(\n" 1332 " int aaaaaaaaa, // wwww\n" 1333 " int bbbbbbbbbb, // xxxxxxx\n" 1334 " // yyyyyyyyyy\n" 1335 " int c, int d, int e) {}", 1336 format("void ffffff(\n" 1337 " int aaaaaaaaa, // wwww\n" 1338 " int bbbbbbbbbb, // xxxxxxx yyyyyyyyyy\n" 1339 " int c, int d, int e) {}", 1340 getLLVMStyleWithColumns(40))); 1341 EXPECT_EQ("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1342 format("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1343 getLLVMStyleWithColumns(20))); 1344 EXPECT_EQ( 1345 "#define XXX // a b c d\n" 1346 " // e f g h", 1347 format("#define XXX // a b c d e f g h", getLLVMStyleWithColumns(22))); 1348 EXPECT_EQ( 1349 "#define XXX // q w e r\n" 1350 " // t y u i", 1351 format("#define XXX //q w e r t y u i", getLLVMStyleWithColumns(22))); 1352 } 1353 1354 TEST_F(FormatTest, PreservesHangingIndentInCxxComments) { 1355 EXPECT_EQ("// A comment\n" 1356 "// that doesn't\n" 1357 "// fit on one\n" 1358 "// line", 1359 format("// A comment that doesn't fit on one line", 1360 getLLVMStyleWithColumns(20))); 1361 EXPECT_EQ("/// A comment\n" 1362 "/// that doesn't\n" 1363 "/// fit on one\n" 1364 "/// line", 1365 format("/// A comment that doesn't fit on one line", 1366 getLLVMStyleWithColumns(20))); 1367 } 1368 1369 TEST_F(FormatTest, DontSplitLineCommentsWithEscapedNewlines) { 1370 EXPECT_EQ("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1371 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1372 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1373 format("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1374 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1375 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")); 1376 EXPECT_EQ("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1377 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1378 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1379 format("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1380 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1381 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1382 getLLVMStyleWithColumns(50))); 1383 // FIXME: One day we might want to implement adjustment of leading whitespace 1384 // of the consecutive lines in this kind of comment: 1385 EXPECT_EQ("double\n" 1386 " a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1387 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1388 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1389 format("double a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1390 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1391 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1392 getLLVMStyleWithColumns(49))); 1393 } 1394 1395 TEST_F(FormatTest, DontSplitLineCommentsWithPragmas) { 1396 FormatStyle Pragmas = getLLVMStyleWithColumns(30); 1397 Pragmas.CommentPragmas = "^ IWYU pragma:"; 1398 EXPECT_EQ( 1399 "// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", 1400 format("// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", Pragmas)); 1401 EXPECT_EQ( 1402 "/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", 1403 format("/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", Pragmas)); 1404 } 1405 1406 TEST_F(FormatTest, PriorityOfCommentBreaking) { 1407 EXPECT_EQ("if (xxx ==\n" 1408 " yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1409 " zzz)\n" 1410 " q();", 1411 format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1412 " zzz) q();", 1413 getLLVMStyleWithColumns(40))); 1414 EXPECT_EQ("if (xxxxxxxxxx ==\n" 1415 " yyy && // aaaaaa bbbbbbbb cccc\n" 1416 " zzz)\n" 1417 " q();", 1418 format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n" 1419 " zzz) q();", 1420 getLLVMStyleWithColumns(40))); 1421 EXPECT_EQ("if (xxxxxxxxxx &&\n" 1422 " yyy || // aaaaaa bbbbbbbb cccc\n" 1423 " zzz)\n" 1424 " q();", 1425 format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n" 1426 " zzz) q();", 1427 getLLVMStyleWithColumns(40))); 1428 EXPECT_EQ("fffffffff(\n" 1429 " &xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1430 " zzz);", 1431 format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1432 " zzz);", 1433 getLLVMStyleWithColumns(40))); 1434 } 1435 1436 TEST_F(FormatTest, MultiLineCommentsInDefines) { 1437 EXPECT_EQ("#define A(x) /* \\\n" 1438 " a comment \\\n" 1439 " inside */ \\\n" 1440 " f();", 1441 format("#define A(x) /* \\\n" 1442 " a comment \\\n" 1443 " inside */ \\\n" 1444 " f();", 1445 getLLVMStyleWithColumns(17))); 1446 EXPECT_EQ("#define A( \\\n" 1447 " x) /* \\\n" 1448 " a comment \\\n" 1449 " inside */ \\\n" 1450 " f();", 1451 format("#define A( \\\n" 1452 " x) /* \\\n" 1453 " a comment \\\n" 1454 " inside */ \\\n" 1455 " f();", 1456 getLLVMStyleWithColumns(17))); 1457 } 1458 1459 TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) { 1460 EXPECT_EQ("namespace {}\n// Test\n#define A", 1461 format("namespace {}\n // Test\n#define A")); 1462 EXPECT_EQ("namespace {}\n/* Test */\n#define A", 1463 format("namespace {}\n /* Test */\n#define A")); 1464 EXPECT_EQ("namespace {}\n/* Test */ #define A", 1465 format("namespace {}\n /* Test */ #define A")); 1466 } 1467 1468 TEST_F(FormatTest, SplitsLongLinesInComments) { 1469 EXPECT_EQ("/* This is a long\n" 1470 " * comment that\n" 1471 " * doesn't\n" 1472 " * fit on one line.\n" 1473 " */", 1474 format("/* " 1475 "This is a long " 1476 "comment that " 1477 "doesn't " 1478 "fit on one line. */", 1479 getLLVMStyleWithColumns(20))); 1480 EXPECT_EQ("/* a b c d\n" 1481 " * e f g\n" 1482 " * h i j k\n" 1483 " */", 1484 format("/* a b c d e f g h i j k */", 1485 getLLVMStyleWithColumns(10))); 1486 EXPECT_EQ("/* a b c d\n" 1487 " * e f g\n" 1488 " * h i j k\n" 1489 " */", 1490 format("\\\n/* a b c d e f g h i j k */", 1491 getLLVMStyleWithColumns(10))); 1492 EXPECT_EQ("/*\n" 1493 "This is a long\n" 1494 "comment that doesn't\n" 1495 "fit on one line.\n" 1496 "*/", 1497 format("/*\n" 1498 "This is a long " 1499 "comment that doesn't " 1500 "fit on one line. \n" 1501 "*/", getLLVMStyleWithColumns(20))); 1502 EXPECT_EQ("/*\n" 1503 " * This is a long\n" 1504 " * comment that\n" 1505 " * doesn't fit on\n" 1506 " * one line.\n" 1507 " */", 1508 format("/* \n" 1509 " * This is a long " 1510 " comment that " 1511 " doesn't fit on " 1512 " one line. \n" 1513 " */", getLLVMStyleWithColumns(20))); 1514 EXPECT_EQ("/*\n" 1515 " * This_is_a_comment_with_words_that_dont_fit_on_one_line\n" 1516 " * so_it_should_be_broken\n" 1517 " * wherever_a_space_occurs\n" 1518 " */", 1519 format("/*\n" 1520 " * This_is_a_comment_with_words_that_dont_fit_on_one_line " 1521 " so_it_should_be_broken " 1522 " wherever_a_space_occurs \n" 1523 " */", 1524 getLLVMStyleWithColumns(20))); 1525 EXPECT_EQ("/*\n" 1526 " * This_comment_can_not_be_broken_into_lines\n" 1527 " */", 1528 format("/*\n" 1529 " * This_comment_can_not_be_broken_into_lines\n" 1530 " */", 1531 getLLVMStyleWithColumns(20))); 1532 EXPECT_EQ("{\n" 1533 " /*\n" 1534 " This is another\n" 1535 " long comment that\n" 1536 " doesn't fit on one\n" 1537 " line 1234567890\n" 1538 " */\n" 1539 "}", 1540 format("{\n" 1541 "/*\n" 1542 "This is another " 1543 " long comment that " 1544 " doesn't fit on one" 1545 " line 1234567890\n" 1546 "*/\n" 1547 "}", getLLVMStyleWithColumns(20))); 1548 EXPECT_EQ("{\n" 1549 " /*\n" 1550 " * This i s\n" 1551 " * another comment\n" 1552 " * t hat doesn' t\n" 1553 " * fit on one l i\n" 1554 " * n e\n" 1555 " */\n" 1556 "}", 1557 format("{\n" 1558 "/*\n" 1559 " * This i s" 1560 " another comment" 1561 " t hat doesn' t" 1562 " fit on one l i" 1563 " n e\n" 1564 " */\n" 1565 "}", getLLVMStyleWithColumns(20))); 1566 EXPECT_EQ("/*\n" 1567 " * This is a long\n" 1568 " * comment that\n" 1569 " * doesn't fit on\n" 1570 " * one line\n" 1571 " */", 1572 format(" /*\n" 1573 " * This is a long comment that doesn't fit on one line\n" 1574 " */", getLLVMStyleWithColumns(20))); 1575 EXPECT_EQ("{\n" 1576 " if (something) /* This is a\n" 1577 " long\n" 1578 " comment */\n" 1579 " ;\n" 1580 "}", 1581 format("{\n" 1582 " if (something) /* This is a long comment */\n" 1583 " ;\n" 1584 "}", 1585 getLLVMStyleWithColumns(30))); 1586 1587 EXPECT_EQ("/* A comment before\n" 1588 " * a macro\n" 1589 " * definition */\n" 1590 "#define a b", 1591 format("/* A comment before a macro definition */\n" 1592 "#define a b", 1593 getLLVMStyleWithColumns(20))); 1594 1595 EXPECT_EQ("/* some comment\n" 1596 " * a comment\n" 1597 "* that we break\n" 1598 " * another comment\n" 1599 "* we have to break\n" 1600 "* a left comment\n" 1601 " */", 1602 format(" /* some comment\n" 1603 " * a comment that we break\n" 1604 " * another comment we have to break\n" 1605 "* a left comment\n" 1606 " */", 1607 getLLVMStyleWithColumns(20))); 1608 1609 EXPECT_EQ("/*\n" 1610 "\n" 1611 "\n" 1612 " */\n", 1613 format(" /* \n" 1614 " \n" 1615 " \n" 1616 " */\n")); 1617 1618 EXPECT_EQ("/* a a */", 1619 format("/* a a */", getLLVMStyleWithColumns(15))); 1620 EXPECT_EQ("/* a a bc */", 1621 format("/* a a bc */", getLLVMStyleWithColumns(15))); 1622 EXPECT_EQ("/* aaa aaa\n" 1623 " * aaaaa */", 1624 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1625 EXPECT_EQ("/* aaa aaa\n" 1626 " * aaaaa */", 1627 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1628 } 1629 1630 TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) { 1631 EXPECT_EQ("#define X \\\n" 1632 " /* \\\n" 1633 " Test \\\n" 1634 " Macro comment \\\n" 1635 " with a long \\\n" 1636 " line \\\n" 1637 " */ \\\n" 1638 " A + B", 1639 format("#define X \\\n" 1640 " /*\n" 1641 " Test\n" 1642 " Macro comment with a long line\n" 1643 " */ \\\n" 1644 " A + B", 1645 getLLVMStyleWithColumns(20))); 1646 EXPECT_EQ("#define X \\\n" 1647 " /* Macro comment \\\n" 1648 " with a long \\\n" 1649 " line */ \\\n" 1650 " A + B", 1651 format("#define X \\\n" 1652 " /* Macro comment with a long\n" 1653 " line */ \\\n" 1654 " A + B", 1655 getLLVMStyleWithColumns(20))); 1656 EXPECT_EQ("#define X \\\n" 1657 " /* Macro comment \\\n" 1658 " * with a long \\\n" 1659 " * line */ \\\n" 1660 " A + B", 1661 format("#define X \\\n" 1662 " /* Macro comment with a long line */ \\\n" 1663 " A + B", 1664 getLLVMStyleWithColumns(20))); 1665 } 1666 1667 TEST_F(FormatTest, CommentsInStaticInitializers) { 1668 EXPECT_EQ( 1669 "static SomeType type = {aaaaaaaaaaaaaaaaaaaa, /* comment */\n" 1670 " aaaaaaaaaaaaaaaaaaaa /* comment */,\n" 1671 " /* comment */ aaaaaaaaaaaaaaaaaaaa,\n" 1672 " aaaaaaaaaaaaaaaaaaaa, // comment\n" 1673 " aaaaaaaaaaaaaaaaaaaa};", 1674 format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa , /* comment */\n" 1675 " aaaaaaaaaaaaaaaaaaaa /* comment */ ,\n" 1676 " /* comment */ aaaaaaaaaaaaaaaaaaaa ,\n" 1677 " aaaaaaaaaaaaaaaaaaaa , // comment\n" 1678 " aaaaaaaaaaaaaaaaaaaa };")); 1679 verifyFormat("static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1680 " bbbbbbbbbbb, ccccccccccc};"); 1681 verifyFormat("static SomeType type = {aaaaaaaaaaa,\n" 1682 " // comment for bb....\n" 1683 " bbbbbbbbbbb, ccccccccccc};"); 1684 verifyGoogleFormat( 1685 "static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1686 " bbbbbbbbbbb, ccccccccccc};"); 1687 verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n" 1688 " // comment for bb....\n" 1689 " bbbbbbbbbbb, ccccccccccc};"); 1690 1691 verifyFormat("S s = {{a, b, c}, // Group #1\n" 1692 " {d, e, f}, // Group #2\n" 1693 " {g, h, i}}; // Group #3"); 1694 verifyFormat("S s = {{// Group #1\n" 1695 " a, b, c},\n" 1696 " {// Group #2\n" 1697 " d, e, f},\n" 1698 " {// Group #3\n" 1699 " g, h, i}};"); 1700 1701 EXPECT_EQ("S s = {\n" 1702 " // Some comment\n" 1703 " a,\n" 1704 "\n" 1705 " // Comment after empty line\n" 1706 " b}", 1707 format("S s = {\n" 1708 " // Some comment\n" 1709 " a,\n" 1710 " \n" 1711 " // Comment after empty line\n" 1712 " b\n" 1713 "}")); 1714 EXPECT_EQ("S s = {\n" 1715 " /* Some comment */\n" 1716 " a,\n" 1717 "\n" 1718 " /* Comment after empty line */\n" 1719 " b}", 1720 format("S s = {\n" 1721 " /* Some comment */\n" 1722 " a,\n" 1723 " \n" 1724 " /* Comment after empty line */\n" 1725 " b\n" 1726 "}")); 1727 verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n" 1728 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1729 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1730 " 0x00, 0x00, 0x00, 0x00}; // comment\n"); 1731 } 1732 1733 TEST_F(FormatTest, IgnoresIf0Contents) { 1734 EXPECT_EQ("#if 0\n" 1735 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1736 "#endif\n" 1737 "void f() {}", 1738 format("#if 0\n" 1739 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1740 "#endif\n" 1741 "void f( ) { }")); 1742 EXPECT_EQ("#if false\n" 1743 "void f( ) { }\n" 1744 "#endif\n" 1745 "void g() {}\n", 1746 format("#if false\n" 1747 "void f( ) { }\n" 1748 "#endif\n" 1749 "void g( ) { }\n")); 1750 EXPECT_EQ("enum E {\n" 1751 " One,\n" 1752 " Two,\n" 1753 "#if 0\n" 1754 "Three,\n" 1755 " Four,\n" 1756 "#endif\n" 1757 " Five\n" 1758 "};", 1759 format("enum E {\n" 1760 " One,Two,\n" 1761 "#if 0\n" 1762 "Three,\n" 1763 " Four,\n" 1764 "#endif\n" 1765 " Five};")); 1766 EXPECT_EQ("enum F {\n" 1767 " One,\n" 1768 "#if 1\n" 1769 " Two,\n" 1770 "#if 0\n" 1771 "Three,\n" 1772 " Four,\n" 1773 "#endif\n" 1774 " Five\n" 1775 "#endif\n" 1776 "};", 1777 format("enum F {\n" 1778 "One,\n" 1779 "#if 1\n" 1780 "Two,\n" 1781 "#if 0\n" 1782 "Three,\n" 1783 " Four,\n" 1784 "#endif\n" 1785 "Five\n" 1786 "#endif\n" 1787 "};")); 1788 EXPECT_EQ("enum G {\n" 1789 " One,\n" 1790 "#if 0\n" 1791 "Two,\n" 1792 "#else\n" 1793 " Three,\n" 1794 "#endif\n" 1795 " Four\n" 1796 "};", 1797 format("enum G {\n" 1798 "One,\n" 1799 "#if 0\n" 1800 "Two,\n" 1801 "#else\n" 1802 "Three,\n" 1803 "#endif\n" 1804 "Four\n" 1805 "};")); 1806 EXPECT_EQ("enum H {\n" 1807 " One,\n" 1808 "#if 0\n" 1809 "#ifdef Q\n" 1810 "Two,\n" 1811 "#else\n" 1812 "Three,\n" 1813 "#endif\n" 1814 "#endif\n" 1815 " Four\n" 1816 "};", 1817 format("enum H {\n" 1818 "One,\n" 1819 "#if 0\n" 1820 "#ifdef Q\n" 1821 "Two,\n" 1822 "#else\n" 1823 "Three,\n" 1824 "#endif\n" 1825 "#endif\n" 1826 "Four\n" 1827 "};")); 1828 EXPECT_EQ("enum I {\n" 1829 " One,\n" 1830 "#if /* test */ 0 || 1\n" 1831 "Two,\n" 1832 "Three,\n" 1833 "#endif\n" 1834 " Four\n" 1835 "};", 1836 format("enum I {\n" 1837 "One,\n" 1838 "#if /* test */ 0 || 1\n" 1839 "Two,\n" 1840 "Three,\n" 1841 "#endif\n" 1842 "Four\n" 1843 "};")); 1844 EXPECT_EQ("enum J {\n" 1845 " One,\n" 1846 "#if 0\n" 1847 "#if 0\n" 1848 "Two,\n" 1849 "#else\n" 1850 "Three,\n" 1851 "#endif\n" 1852 "Four,\n" 1853 "#endif\n" 1854 " Five\n" 1855 "};", 1856 format("enum J {\n" 1857 "One,\n" 1858 "#if 0\n" 1859 "#if 0\n" 1860 "Two,\n" 1861 "#else\n" 1862 "Three,\n" 1863 "#endif\n" 1864 "Four,\n" 1865 "#endif\n" 1866 "Five\n" 1867 "};")); 1868 1869 } 1870 1871 //===----------------------------------------------------------------------===// 1872 // Tests for classes, namespaces, etc. 1873 //===----------------------------------------------------------------------===// 1874 1875 TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) { 1876 verifyFormat("class A {};"); 1877 } 1878 1879 TEST_F(FormatTest, UnderstandsAccessSpecifiers) { 1880 verifyFormat("class A {\n" 1881 "public:\n" 1882 "public: // comment\n" 1883 "protected:\n" 1884 "private:\n" 1885 " void f() {}\n" 1886 "};"); 1887 verifyGoogleFormat("class A {\n" 1888 " public:\n" 1889 " protected:\n" 1890 " private:\n" 1891 " void f() {}\n" 1892 "};"); 1893 verifyFormat("class A {\n" 1894 "public slots:\n" 1895 " void f() {}\n" 1896 "public Q_SLOTS:\n" 1897 " void f() {}\n" 1898 "};"); 1899 } 1900 1901 TEST_F(FormatTest, SeparatesLogicalBlocks) { 1902 EXPECT_EQ("class A {\n" 1903 "public:\n" 1904 " void f();\n" 1905 "\n" 1906 "private:\n" 1907 " void g() {}\n" 1908 " // test\n" 1909 "protected:\n" 1910 " int h;\n" 1911 "};", 1912 format("class A {\n" 1913 "public:\n" 1914 "void f();\n" 1915 "private:\n" 1916 "void g() {}\n" 1917 "// test\n" 1918 "protected:\n" 1919 "int h;\n" 1920 "};")); 1921 EXPECT_EQ("class A {\n" 1922 "protected:\n" 1923 "public:\n" 1924 " void f();\n" 1925 "};", 1926 format("class A {\n" 1927 "protected:\n" 1928 "\n" 1929 "public:\n" 1930 "\n" 1931 " void f();\n" 1932 "};")); 1933 } 1934 1935 TEST_F(FormatTest, FormatsClasses) { 1936 verifyFormat("class A : public B {};"); 1937 verifyFormat("class A : public ::B {};"); 1938 1939 verifyFormat( 1940 "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 1941 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 1942 verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n" 1943 " : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 1944 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 1945 verifyFormat( 1946 "class A : public B, public C, public D, public E, public F {};"); 1947 verifyFormat("class AAAAAAAAAAAA : public B,\n" 1948 " public C,\n" 1949 " public D,\n" 1950 " public E,\n" 1951 " public F,\n" 1952 " public G {};"); 1953 1954 verifyFormat("class\n" 1955 " ReallyReallyLongClassName {\n" 1956 " int i;\n" 1957 "};", 1958 getLLVMStyleWithColumns(32)); 1959 verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n" 1960 " aaaaaaaaaaaaaaaa> {};"); 1961 verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n" 1962 " : public aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaa,\n" 1963 " aaaaaaaaaaaaaaaaaaaaaa> {};"); 1964 verifyFormat("template <class R, class C>\n" 1965 "struct Aaaaaaaaaaaaaaaaa<R (C::*)(int) const>\n" 1966 " : Aaaaaaaaaaaaaaaaa<R (C::*)(int)> {};"); 1967 verifyFormat("class ::A::B {};"); 1968 } 1969 1970 TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) { 1971 verifyFormat("class A {\n} a, b;"); 1972 verifyFormat("struct A {\n} a, b;"); 1973 verifyFormat("union A {\n} a;"); 1974 } 1975 1976 TEST_F(FormatTest, FormatsEnum) { 1977 verifyFormat("enum {\n" 1978 " Zero,\n" 1979 " One = 1,\n" 1980 " Two = One + 1,\n" 1981 " Three = (One + Two),\n" 1982 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 1983 " Five = (One, Two, Three, Four, 5)\n" 1984 "};"); 1985 verifyGoogleFormat("enum {\n" 1986 " Zero,\n" 1987 " One = 1,\n" 1988 " Two = One + 1,\n" 1989 " Three = (One + Two),\n" 1990 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 1991 " Five = (One, Two, Three, Four, 5)\n" 1992 "};"); 1993 verifyFormat("enum Enum {};"); 1994 verifyFormat("enum {};"); 1995 verifyFormat("enum X E {} d;"); 1996 verifyFormat("enum __attribute__((...)) E {} d;"); 1997 verifyFormat("enum __declspec__((...)) E {} d;"); 1998 verifyFormat("enum X f() {\n a();\n return 42;\n}"); 1999 verifyFormat("enum {\n" 2000 " Bar = Foo<int, int>::value\n" 2001 "};", 2002 getLLVMStyleWithColumns(30)); 2003 2004 verifyFormat("enum ShortEnum { A, B, C };"); 2005 verifyGoogleFormat("enum ShortEnum { A, B, C };"); 2006 2007 EXPECT_EQ("enum KeepEmptyLines {\n" 2008 " ONE,\n" 2009 "\n" 2010 " TWO,\n" 2011 "\n" 2012 " THREE\n" 2013 "}", 2014 format("enum KeepEmptyLines {\n" 2015 " ONE,\n" 2016 "\n" 2017 " TWO,\n" 2018 "\n" 2019 "\n" 2020 " THREE\n" 2021 "}")); 2022 verifyFormat("enum E { // comment\n" 2023 " ONE,\n" 2024 " TWO\n" 2025 "};\n" 2026 "int i;"); 2027 } 2028 2029 TEST_F(FormatTest, FormatsEnumsWithErrors) { 2030 verifyFormat("enum Type {\n" 2031 " One = 0; // These semicolons should be commas.\n" 2032 " Two = 1;\n" 2033 "};"); 2034 verifyFormat("namespace n {\n" 2035 "enum Type {\n" 2036 " One,\n" 2037 " Two, // missing };\n" 2038 " int i;\n" 2039 "}\n" 2040 "void g() {}"); 2041 } 2042 2043 TEST_F(FormatTest, FormatsEnumStruct) { 2044 verifyFormat("enum struct {\n" 2045 " Zero,\n" 2046 " One = 1,\n" 2047 " Two = One + 1,\n" 2048 " Three = (One + Two),\n" 2049 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2050 " Five = (One, Two, Three, Four, 5)\n" 2051 "};"); 2052 verifyFormat("enum struct Enum {};"); 2053 verifyFormat("enum struct {};"); 2054 verifyFormat("enum struct X E {} d;"); 2055 verifyFormat("enum struct __attribute__((...)) E {} d;"); 2056 verifyFormat("enum struct __declspec__((...)) E {} d;"); 2057 verifyFormat("enum struct X f() {\n a();\n return 42;\n}"); 2058 } 2059 2060 TEST_F(FormatTest, FormatsEnumClass) { 2061 verifyFormat("enum class {\n" 2062 " Zero,\n" 2063 " One = 1,\n" 2064 " Two = One + 1,\n" 2065 " Three = (One + Two),\n" 2066 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2067 " Five = (One, Two, Three, Four, 5)\n" 2068 "};"); 2069 verifyFormat("enum class Enum {};"); 2070 verifyFormat("enum class {};"); 2071 verifyFormat("enum class X E {} d;"); 2072 verifyFormat("enum class __attribute__((...)) E {} d;"); 2073 verifyFormat("enum class __declspec__((...)) E {} d;"); 2074 verifyFormat("enum class X f() {\n a();\n return 42;\n}"); 2075 } 2076 2077 TEST_F(FormatTest, FormatsEnumTypes) { 2078 verifyFormat("enum X : int {\n" 2079 " A, // Force multiple lines.\n" 2080 " B\n" 2081 "};"); 2082 verifyFormat("enum X : int { A, B };"); 2083 verifyFormat("enum X : std::uint32_t { A, B };"); 2084 } 2085 2086 TEST_F(FormatTest, FormatsNSEnums) { 2087 verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }"); 2088 verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n" 2089 " // Information about someDecentlyLongValue.\n" 2090 " someDecentlyLongValue,\n" 2091 " // Information about anotherDecentlyLongValue.\n" 2092 " anotherDecentlyLongValue,\n" 2093 " // Information about aThirdDecentlyLongValue.\n" 2094 " aThirdDecentlyLongValue\n" 2095 "};"); 2096 verifyGoogleFormat("typedef NS_OPTIONS(NSInteger, MyType) {\n" 2097 " a = 1,\n" 2098 " b = 2,\n" 2099 " c = 3,\n" 2100 "};"); 2101 verifyGoogleFormat("typedef CF_ENUM(NSInteger, MyType) {\n" 2102 " a = 1,\n" 2103 " b = 2,\n" 2104 " c = 3,\n" 2105 "};"); 2106 verifyGoogleFormat("typedef CF_OPTIONS(NSInteger, MyType) {\n" 2107 " a = 1,\n" 2108 " b = 2,\n" 2109 " c = 3,\n" 2110 "};"); 2111 } 2112 2113 TEST_F(FormatTest, FormatsBitfields) { 2114 verifyFormat("struct Bitfields {\n" 2115 " unsigned sClass : 8;\n" 2116 " unsigned ValueKind : 2;\n" 2117 "};"); 2118 verifyFormat("struct A {\n" 2119 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n" 2120 " bbbbbbbbbbbbbbbbbbbbbbbbb;\n" 2121 "};"); 2122 } 2123 2124 TEST_F(FormatTest, FormatsNamespaces) { 2125 verifyFormat("namespace some_namespace {\n" 2126 "class A {};\n" 2127 "void f() { f(); }\n" 2128 "}"); 2129 verifyFormat("namespace {\n" 2130 "class A {};\n" 2131 "void f() { f(); }\n" 2132 "}"); 2133 verifyFormat("inline namespace X {\n" 2134 "class A {};\n" 2135 "void f() { f(); }\n" 2136 "}"); 2137 verifyFormat("using namespace some_namespace;\n" 2138 "class A {};\n" 2139 "void f() { f(); }"); 2140 2141 // This code is more common than we thought; if we 2142 // layout this correctly the semicolon will go into 2143 // its own line, which is undesirable. 2144 verifyFormat("namespace {};"); 2145 verifyFormat("namespace {\n" 2146 "class A {};\n" 2147 "};"); 2148 2149 verifyFormat("namespace {\n" 2150 "int SomeVariable = 0; // comment\n" 2151 "} // namespace"); 2152 EXPECT_EQ("#ifndef HEADER_GUARD\n" 2153 "#define HEADER_GUARD\n" 2154 "namespace my_namespace {\n" 2155 "int i;\n" 2156 "} // my_namespace\n" 2157 "#endif // HEADER_GUARD", 2158 format("#ifndef HEADER_GUARD\n" 2159 " #define HEADER_GUARD\n" 2160 " namespace my_namespace {\n" 2161 "int i;\n" 2162 "} // my_namespace\n" 2163 "#endif // HEADER_GUARD")); 2164 2165 FormatStyle Style = getLLVMStyle(); 2166 Style.NamespaceIndentation = FormatStyle::NI_All; 2167 EXPECT_EQ("namespace out {\n" 2168 " int i;\n" 2169 " namespace in {\n" 2170 " int i;\n" 2171 " } // namespace\n" 2172 "} // namespace", 2173 format("namespace out {\n" 2174 "int i;\n" 2175 "namespace in {\n" 2176 "int i;\n" 2177 "} // namespace\n" 2178 "} // namespace", 2179 Style)); 2180 2181 Style.NamespaceIndentation = FormatStyle::NI_Inner; 2182 EXPECT_EQ("namespace out {\n" 2183 "int i;\n" 2184 "namespace in {\n" 2185 " int i;\n" 2186 "} // namespace\n" 2187 "} // namespace", 2188 format("namespace out {\n" 2189 "int i;\n" 2190 "namespace in {\n" 2191 "int i;\n" 2192 "} // namespace\n" 2193 "} // namespace", 2194 Style)); 2195 } 2196 2197 TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); } 2198 2199 TEST_F(FormatTest, FormatsInlineASM) { 2200 verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));"); 2201 verifyFormat("asm(\"nop\" ::: \"memory\");"); 2202 verifyFormat( 2203 "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n" 2204 " \"cpuid\\n\\t\"\n" 2205 " \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n" 2206 " : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n" 2207 " : \"a\"(value));"); 2208 EXPECT_EQ( 2209 "void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2210 " __asm {\n" 2211 " mov edx,[that] // vtable in edx\n" 2212 " mov eax,methodIndex\n" 2213 " call [edx][eax*4] // stdcall\n" 2214 " }\n" 2215 "}", 2216 format("void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2217 " __asm {\n" 2218 " mov edx,[that] // vtable in edx\n" 2219 " mov eax,methodIndex\n" 2220 " call [edx][eax*4] // stdcall\n" 2221 " }\n" 2222 "}")); 2223 verifyFormat("void function() {\n" 2224 " // comment\n" 2225 " asm(\"\");\n" 2226 "}"); 2227 } 2228 2229 TEST_F(FormatTest, FormatTryCatch) { 2230 verifyFormat("try {\n" 2231 " throw a * b;\n" 2232 "} catch (int a) {\n" 2233 " // Do nothing.\n" 2234 "} catch (...) {\n" 2235 " exit(42);\n" 2236 "}"); 2237 2238 // Function-level try statements. 2239 verifyFormat("int f() try { return 4; } catch (...) {\n" 2240 " return 5;\n" 2241 "}"); 2242 verifyFormat("class A {\n" 2243 " int a;\n" 2244 " A() try : a(0) {\n" 2245 " } catch (...) {\n" 2246 " throw;\n" 2247 " }\n" 2248 "};\n"); 2249 2250 // Incomplete try-catch blocks. 2251 verifyFormat("try {} catch ("); 2252 } 2253 2254 TEST_F(FormatTest, FormatSEHTryCatch) { 2255 verifyFormat("__try {\n" 2256 " int a = b * c;\n" 2257 "} __except (EXCEPTION_EXECUTE_HANDLER) {\n" 2258 " // Do nothing.\n" 2259 "}"); 2260 2261 verifyFormat("__try {\n" 2262 " int a = b * c;\n" 2263 "} __finally {\n" 2264 " // Do nothing.\n" 2265 "}"); 2266 2267 verifyFormat("DEBUG({\n" 2268 " __try {\n" 2269 " } __finally {\n" 2270 " }\n" 2271 "});\n"); 2272 } 2273 2274 TEST_F(FormatTest, IncompleteTryCatchBlocks) { 2275 verifyFormat("try {\n" 2276 " f();\n" 2277 "} catch {\n" 2278 " g();\n" 2279 "}"); 2280 verifyFormat("try {\n" 2281 " f();\n" 2282 "} catch (A a) MACRO(x) {\n" 2283 " g();\n" 2284 "} catch (B b) MACRO(x) {\n" 2285 " g();\n" 2286 "}"); 2287 } 2288 2289 TEST_F(FormatTest, FormatTryCatchBraceStyles) { 2290 FormatStyle Style = getLLVMStyle(); 2291 Style.BreakBeforeBraces = FormatStyle::BS_Attach; 2292 verifyFormat("try {\n" 2293 " // something\n" 2294 "} catch (...) {\n" 2295 " // something\n" 2296 "}", 2297 Style); 2298 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 2299 verifyFormat("try {\n" 2300 " // something\n" 2301 "}\n" 2302 "catch (...) {\n" 2303 " // something\n" 2304 "}", 2305 Style); 2306 verifyFormat("__try {\n" 2307 " // something\n" 2308 "}\n" 2309 "__finally {\n" 2310 " // something\n" 2311 "}", 2312 Style); 2313 verifyFormat("@try {\n" 2314 " // something\n" 2315 "}\n" 2316 "@finally {\n" 2317 " // something\n" 2318 "}", 2319 Style); 2320 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 2321 verifyFormat("try\n" 2322 "{\n" 2323 " // something\n" 2324 "}\n" 2325 "catch (...)\n" 2326 "{\n" 2327 " // something\n" 2328 "}", 2329 Style); 2330 Style.BreakBeforeBraces = FormatStyle::BS_GNU; 2331 verifyFormat("try\n" 2332 " {\n" 2333 " // something\n" 2334 " }\n" 2335 "catch (...)\n" 2336 " {\n" 2337 " // something\n" 2338 " }", 2339 Style); 2340 } 2341 2342 TEST_F(FormatTest, FormatObjCTryCatch) { 2343 verifyFormat("@try {\n" 2344 " f();\n" 2345 "} @catch (NSException e) {\n" 2346 " @throw;\n" 2347 "} @finally {\n" 2348 " exit(42);\n" 2349 "}"); 2350 verifyFormat("DEBUG({\n" 2351 " @try {\n" 2352 " } @finally {\n" 2353 " }\n" 2354 "});\n"); 2355 } 2356 2357 TEST_F(FormatTest, StaticInitializers) { 2358 verifyFormat("static SomeClass SC = {1, 'a'};"); 2359 2360 verifyFormat( 2361 "static SomeClass WithALoooooooooooooooooooongName = {\n" 2362 " 100000000, \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};"); 2363 2364 // Here, everything other than the "}" would fit on a line. 2365 verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n" 2366 " 10000000000000000000000000};"); 2367 EXPECT_EQ("S s = {a,\n" 2368 "\n" 2369 " b};", 2370 format("S s = {\n" 2371 " a,\n" 2372 "\n" 2373 " b\n" 2374 "};")); 2375 2376 // FIXME: This would fit into the column limit if we'd fit "{ {" on the first 2377 // line. However, the formatting looks a bit off and this probably doesn't 2378 // happen often in practice. 2379 verifyFormat("static int Variable[1] = {\n" 2380 " {1000000000000000000000000000000000000}};", 2381 getLLVMStyleWithColumns(40)); 2382 } 2383 2384 TEST_F(FormatTest, DesignatedInitializers) { 2385 verifyFormat("const struct A a = {.a = 1, .b = 2};"); 2386 verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n" 2387 " .bbbbbbbbbb = 2,\n" 2388 " .cccccccccc = 3,\n" 2389 " .dddddddddd = 4,\n" 2390 " .eeeeeeeeee = 5};"); 2391 verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n" 2392 " .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n" 2393 " .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n" 2394 " .ccccccccccccccccccccccccccc = 3,\n" 2395 " .ddddddddddddddddddddddddddd = 4,\n" 2396 " .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};"); 2397 2398 verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};"); 2399 } 2400 2401 TEST_F(FormatTest, NestedStaticInitializers) { 2402 verifyFormat("static A x = {{{}}};\n"); 2403 verifyFormat("static A x = {{{init1, init2, init3, init4},\n" 2404 " {init1, init2, init3, init4}}};", 2405 getLLVMStyleWithColumns(50)); 2406 2407 verifyFormat("somes Status::global_reps[3] = {\n" 2408 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2409 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2410 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};", 2411 getLLVMStyleWithColumns(60)); 2412 verifyGoogleFormat("SomeType Status::global_reps[3] = {\n" 2413 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2414 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2415 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};"); 2416 verifyFormat( 2417 "CGRect cg_rect = {{rect.fLeft, rect.fTop},\n" 2418 " {rect.fRight - rect.fLeft, rect.fBottom - rect.fTop}};"); 2419 2420 verifyFormat( 2421 "SomeArrayOfSomeType a = {\n" 2422 " {{1, 2, 3},\n" 2423 " {1, 2, 3},\n" 2424 " {111111111111111111111111111111, 222222222222222222222222222222,\n" 2425 " 333333333333333333333333333333},\n" 2426 " {1, 2, 3},\n" 2427 " {1, 2, 3}}};"); 2428 verifyFormat( 2429 "SomeArrayOfSomeType a = {\n" 2430 " {{1, 2, 3}},\n" 2431 " {{1, 2, 3}},\n" 2432 " {{111111111111111111111111111111, 222222222222222222222222222222,\n" 2433 " 333333333333333333333333333333}},\n" 2434 " {{1, 2, 3}},\n" 2435 " {{1, 2, 3}}};"); 2436 2437 verifyFormat( 2438 "struct {\n" 2439 " unsigned bit;\n" 2440 " const char *const name;\n" 2441 "} kBitsToOs[] = {{kOsMac, \"Mac\"},\n" 2442 " {kOsWin, \"Windows\"},\n" 2443 " {kOsLinux, \"Linux\"},\n" 2444 " {kOsCrOS, \"Chrome OS\"}};"); 2445 verifyFormat( 2446 "struct {\n" 2447 " unsigned bit;\n" 2448 " const char *const name;\n" 2449 "} kBitsToOs[] = {\n" 2450 " {kOsMac, \"Mac\"},\n" 2451 " {kOsWin, \"Windows\"},\n" 2452 " {kOsLinux, \"Linux\"},\n" 2453 " {kOsCrOS, \"Chrome OS\"},\n" 2454 "};"); 2455 } 2456 2457 TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) { 2458 verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2459 " \\\n" 2460 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)"); 2461 } 2462 2463 TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) { 2464 verifyFormat("virtual void write(ELFWriter *writerrr,\n" 2465 " OwningPtr<FileOutputBuffer> &buffer) = 0;"); 2466 } 2467 2468 TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) { 2469 verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3", 2470 getLLVMStyleWithColumns(40)); 2471 verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2472 getLLVMStyleWithColumns(40)); 2473 EXPECT_EQ("#define Q \\\n" 2474 " \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\" \\\n" 2475 " \"aaaaaaaa.cpp\"", 2476 format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2477 getLLVMStyleWithColumns(40))); 2478 } 2479 2480 TEST_F(FormatTest, UnderstandsLinePPDirective) { 2481 EXPECT_EQ("# 123 \"A string literal\"", 2482 format(" # 123 \"A string literal\"")); 2483 } 2484 2485 TEST_F(FormatTest, LayoutUnknownPPDirective) { 2486 EXPECT_EQ("#;", format("#;")); 2487 verifyFormat("#\n;\n;\n;"); 2488 } 2489 2490 TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) { 2491 EXPECT_EQ("#line 42 \"test\"\n", 2492 format("# \\\n line \\\n 42 \\\n \"test\"\n")); 2493 EXPECT_EQ("#define A B\n", format("# \\\n define \\\n A \\\n B\n", 2494 getLLVMStyleWithColumns(12))); 2495 } 2496 2497 TEST_F(FormatTest, EndOfFileEndsPPDirective) { 2498 EXPECT_EQ("#line 42 \"test\"", 2499 format("# \\\n line \\\n 42 \\\n \"test\"")); 2500 EXPECT_EQ("#define A B", format("# \\\n define \\\n A \\\n B")); 2501 } 2502 2503 TEST_F(FormatTest, DoesntRemoveUnknownTokens) { 2504 verifyFormat("#define A \\x20"); 2505 verifyFormat("#define A \\ x20"); 2506 EXPECT_EQ("#define A \\ x20", format("#define A \\ x20")); 2507 verifyFormat("#define A ''"); 2508 verifyFormat("#define A ''qqq"); 2509 verifyFormat("#define A `qqq"); 2510 verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");"); 2511 EXPECT_EQ("const char *c = STRINGIFY(\n" 2512 "\\na : b);", 2513 format("const char * c = STRINGIFY(\n" 2514 "\\na : b);")); 2515 2516 verifyFormat("a\r\\"); 2517 verifyFormat("a\v\\"); 2518 verifyFormat("a\f\\"); 2519 } 2520 2521 TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) { 2522 verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13)); 2523 verifyFormat("#define A( \\\n BB)", getLLVMStyleWithColumns(12)); 2524 verifyFormat("#define A( \\\n A, B)", getLLVMStyleWithColumns(12)); 2525 // FIXME: We never break before the macro name. 2526 verifyFormat("#define AA( \\\n B)", getLLVMStyleWithColumns(12)); 2527 2528 verifyFormat("#define A A\n#define A A"); 2529 verifyFormat("#define A(X) A\n#define A A"); 2530 2531 verifyFormat("#define Something Other", getLLVMStyleWithColumns(23)); 2532 verifyFormat("#define Something \\\n Other", getLLVMStyleWithColumns(22)); 2533 } 2534 2535 TEST_F(FormatTest, HandlePreprocessorDirectiveContext) { 2536 EXPECT_EQ("// somecomment\n" 2537 "#include \"a.h\"\n" 2538 "#define A( \\\n" 2539 " A, B)\n" 2540 "#include \"b.h\"\n" 2541 "// somecomment\n", 2542 format(" // somecomment\n" 2543 " #include \"a.h\"\n" 2544 "#define A(A,\\\n" 2545 " B)\n" 2546 " #include \"b.h\"\n" 2547 " // somecomment\n", 2548 getLLVMStyleWithColumns(13))); 2549 } 2550 2551 TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); } 2552 2553 TEST_F(FormatTest, LayoutCodeInMacroDefinitions) { 2554 EXPECT_EQ("#define A \\\n" 2555 " c; \\\n" 2556 " e;\n" 2557 "f;", 2558 format("#define A c; e;\n" 2559 "f;", 2560 getLLVMStyleWithColumns(14))); 2561 } 2562 2563 TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); } 2564 2565 TEST_F(FormatTest, AlwaysFormatsEntireMacroDefinitions) { 2566 EXPECT_EQ("int i;\n" 2567 "#define A \\\n" 2568 " int i; \\\n" 2569 " int j\n" 2570 "int k;", 2571 format("int i;\n" 2572 "#define A \\\n" 2573 " int i ; \\\n" 2574 " int j\n" 2575 "int k;", 2576 8, 0, getGoogleStyle())); // 8: position of "#define". 2577 EXPECT_EQ("int i;\n" 2578 "#define A \\\n" 2579 " int i; \\\n" 2580 " int j\n" 2581 "int k;", 2582 format("int i;\n" 2583 "#define A \\\n" 2584 " int i ; \\\n" 2585 " int j\n" 2586 "int k;", 2587 45, 0, getGoogleStyle())); // 45: position of "j". 2588 } 2589 2590 TEST_F(FormatTest, MacroDefinitionInsideStatement) { 2591 EXPECT_EQ("int x,\n" 2592 "#define A\n" 2593 " y;", 2594 format("int x,\n#define A\ny;")); 2595 } 2596 2597 TEST_F(FormatTest, HashInMacroDefinition) { 2598 EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle())); 2599 verifyFormat("#define A \\\n b #c;", getLLVMStyleWithColumns(11)); 2600 verifyFormat("#define A \\\n" 2601 " { \\\n" 2602 " f(#c); \\\n" 2603 " }", 2604 getLLVMStyleWithColumns(11)); 2605 2606 verifyFormat("#define A(X) \\\n" 2607 " void function##X()", 2608 getLLVMStyleWithColumns(22)); 2609 2610 verifyFormat("#define A(a, b, c) \\\n" 2611 " void a##b##c()", 2612 getLLVMStyleWithColumns(22)); 2613 2614 verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22)); 2615 } 2616 2617 TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) { 2618 EXPECT_EQ("#define A (x)", format("#define A (x)")); 2619 EXPECT_EQ("#define A(x)", format("#define A(x)")); 2620 } 2621 2622 TEST_F(FormatTest, EmptyLinesInMacroDefinitions) { 2623 EXPECT_EQ("#define A b;", format("#define A \\\n" 2624 " \\\n" 2625 " b;", 2626 getLLVMStyleWithColumns(25))); 2627 EXPECT_EQ("#define A \\\n" 2628 " \\\n" 2629 " a; \\\n" 2630 " b;", 2631 format("#define A \\\n" 2632 " \\\n" 2633 " a; \\\n" 2634 " b;", 2635 getLLVMStyleWithColumns(11))); 2636 EXPECT_EQ("#define A \\\n" 2637 " a; \\\n" 2638 " \\\n" 2639 " b;", 2640 format("#define A \\\n" 2641 " a; \\\n" 2642 " \\\n" 2643 " b;", 2644 getLLVMStyleWithColumns(11))); 2645 } 2646 2647 TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) { 2648 verifyFormat("#define A :"); 2649 verifyFormat("#define SOMECASES \\\n" 2650 " case 1: \\\n" 2651 " case 2\n", 2652 getLLVMStyleWithColumns(20)); 2653 verifyFormat("#define A template <typename T>"); 2654 verifyFormat("#define STR(x) #x\n" 2655 "f(STR(this_is_a_string_literal{));"); 2656 verifyFormat("#pragma omp threadprivate( \\\n" 2657 " y)), // expected-warning", 2658 getLLVMStyleWithColumns(28)); 2659 verifyFormat("#d, = };"); 2660 verifyFormat("#if \"a"); 2661 verifyFormat("({\n" 2662 "#define b }\\\n" 2663 " a\n" 2664 "a"); 2665 2666 verifyNoCrash("#if a\na(\n#else\n#endif\n{a"); 2667 verifyNoCrash("a={0,1\n#if a\n#else\n;\n#endif\n}"); 2668 verifyNoCrash("#if a\na(\n#else\n#endif\n) a {a,b,c,d,f,g};"); 2669 verifyNoCrash("#ifdef A\n a(\n #else\n #endif\n) = []() { \n)}"); 2670 } 2671 2672 TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) { 2673 verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline. 2674 EXPECT_EQ("class A : public QObject {\n" 2675 " Q_OBJECT\n" 2676 "\n" 2677 " A() {}\n" 2678 "};", 2679 format("class A : public QObject {\n" 2680 " Q_OBJECT\n" 2681 "\n" 2682 " A() {\n}\n" 2683 "} ;")); 2684 EXPECT_EQ("SOME_MACRO\n" 2685 "namespace {\n" 2686 "void f();\n" 2687 "}", 2688 format("SOME_MACRO\n" 2689 " namespace {\n" 2690 "void f( );\n" 2691 "}")); 2692 // Only if the identifier contains at least 5 characters. 2693 EXPECT_EQ("HTTP f();", 2694 format("HTTP\nf();")); 2695 EXPECT_EQ("MACRO\nf();", 2696 format("MACRO\nf();")); 2697 // Only if everything is upper case. 2698 EXPECT_EQ("class A : public QObject {\n" 2699 " Q_Object A() {}\n" 2700 "};", 2701 format("class A : public QObject {\n" 2702 " Q_Object\n" 2703 " A() {\n}\n" 2704 "} ;")); 2705 2706 // Only if the next line can actually start an unwrapped line. 2707 EXPECT_EQ("SOME_WEIRD_LOG_MACRO << SomeThing;", 2708 format("SOME_WEIRD_LOG_MACRO\n" 2709 "<< SomeThing;")); 2710 2711 verifyFormat("VISIT_GL_CALL(GenBuffers, void, (GLsizei n, GLuint* buffers), " 2712 "(n, buffers))\n", getChromiumStyle(FormatStyle::LK_Cpp)); 2713 } 2714 2715 TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) { 2716 EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2717 "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2718 "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2719 "class X {};\n" 2720 "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2721 "int *createScopDetectionPass() { return 0; }", 2722 format(" INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2723 " INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2724 " INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2725 " class X {};\n" 2726 " INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2727 " int *createScopDetectionPass() { return 0; }")); 2728 // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as 2729 // braces, so that inner block is indented one level more. 2730 EXPECT_EQ("int q() {\n" 2731 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2732 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2733 " IPC_END_MESSAGE_MAP()\n" 2734 "}", 2735 format("int q() {\n" 2736 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2737 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2738 " IPC_END_MESSAGE_MAP()\n" 2739 "}")); 2740 2741 // Same inside macros. 2742 EXPECT_EQ("#define LIST(L) \\\n" 2743 " L(A) \\\n" 2744 " L(B) \\\n" 2745 " L(C)", 2746 format("#define LIST(L) \\\n" 2747 " L(A) \\\n" 2748 " L(B) \\\n" 2749 " L(C)", 2750 getGoogleStyle())); 2751 2752 // These must not be recognized as macros. 2753 EXPECT_EQ("int q() {\n" 2754 " f(x);\n" 2755 " f(x) {}\n" 2756 " f(x)->g();\n" 2757 " f(x)->*g();\n" 2758 " f(x).g();\n" 2759 " f(x) = x;\n" 2760 " f(x) += x;\n" 2761 " f(x) -= x;\n" 2762 " f(x) *= x;\n" 2763 " f(x) /= x;\n" 2764 " f(x) %= x;\n" 2765 " f(x) &= x;\n" 2766 " f(x) |= x;\n" 2767 " f(x) ^= x;\n" 2768 " f(x) >>= x;\n" 2769 " f(x) <<= x;\n" 2770 " f(x)[y].z();\n" 2771 " LOG(INFO) << x;\n" 2772 " ifstream(x) >> x;\n" 2773 "}\n", 2774 format("int q() {\n" 2775 " f(x)\n;\n" 2776 " f(x)\n {}\n" 2777 " f(x)\n->g();\n" 2778 " f(x)\n->*g();\n" 2779 " f(x)\n.g();\n" 2780 " f(x)\n = x;\n" 2781 " f(x)\n += x;\n" 2782 " f(x)\n -= x;\n" 2783 " f(x)\n *= x;\n" 2784 " f(x)\n /= x;\n" 2785 " f(x)\n %= x;\n" 2786 " f(x)\n &= x;\n" 2787 " f(x)\n |= x;\n" 2788 " f(x)\n ^= x;\n" 2789 " f(x)\n >>= x;\n" 2790 " f(x)\n <<= x;\n" 2791 " f(x)\n[y].z();\n" 2792 " LOG(INFO)\n << x;\n" 2793 " ifstream(x)\n >> x;\n" 2794 "}\n")); 2795 EXPECT_EQ("int q() {\n" 2796 " F(x)\n" 2797 " if (1) {\n" 2798 " }\n" 2799 " F(x)\n" 2800 " while (1) {\n" 2801 " }\n" 2802 " F(x)\n" 2803 " G(x);\n" 2804 " F(x)\n" 2805 " try {\n" 2806 " Q();\n" 2807 " } catch (...) {\n" 2808 " }\n" 2809 "}\n", 2810 format("int q() {\n" 2811 "F(x)\n" 2812 "if (1) {}\n" 2813 "F(x)\n" 2814 "while (1) {}\n" 2815 "F(x)\n" 2816 "G(x);\n" 2817 "F(x)\n" 2818 "try { Q(); } catch (...) {}\n" 2819 "}\n")); 2820 EXPECT_EQ("class A {\n" 2821 " A() : t(0) {}\n" 2822 " A(int i) noexcept() : {}\n" 2823 " A(X x)\n" // FIXME: function-level try blocks are broken. 2824 " try : t(0) {\n" 2825 " } catch (...) {\n" 2826 " }\n" 2827 "};", 2828 format("class A {\n" 2829 " A()\n : t(0) {}\n" 2830 " A(int i)\n noexcept() : {}\n" 2831 " A(X x)\n" 2832 " try : t(0) {} catch (...) {}\n" 2833 "};")); 2834 EXPECT_EQ( 2835 "class SomeClass {\n" 2836 "public:\n" 2837 " SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2838 "};", 2839 format("class SomeClass {\n" 2840 "public:\n" 2841 " SomeClass()\n" 2842 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2843 "};")); 2844 EXPECT_EQ( 2845 "class SomeClass {\n" 2846 "public:\n" 2847 " SomeClass()\n" 2848 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2849 "};", 2850 format("class SomeClass {\n" 2851 "public:\n" 2852 " SomeClass()\n" 2853 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2854 "};", getLLVMStyleWithColumns(40))); 2855 } 2856 2857 TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) { 2858 verifyFormat("#define A \\\n" 2859 " f({ \\\n" 2860 " g(); \\\n" 2861 " });", getLLVMStyleWithColumns(11)); 2862 } 2863 2864 TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) { 2865 EXPECT_EQ("{\n {\n#define A\n }\n}", format("{{\n#define A\n}}")); 2866 } 2867 2868 TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) { 2869 verifyFormat("{\n { a #c; }\n}"); 2870 } 2871 2872 TEST_F(FormatTest, FormatUnbalancedStructuralElements) { 2873 EXPECT_EQ("#define A \\\n { \\\n {\nint i;", 2874 format("#define A { {\nint i;", getLLVMStyleWithColumns(11))); 2875 EXPECT_EQ("#define A \\\n } \\\n }\nint i;", 2876 format("#define A } }\nint i;", getLLVMStyleWithColumns(11))); 2877 } 2878 2879 TEST_F(FormatTest, EscapedNewlineAtStartOfToken) { 2880 EXPECT_EQ( 2881 "#define A \\\n int i; \\\n int j;", 2882 format("#define A \\\nint i;\\\n int j;", getLLVMStyleWithColumns(11))); 2883 EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();")); 2884 } 2885 2886 TEST_F(FormatTest, NoEscapedNewlineHandlingInBlockComments) { 2887 EXPECT_EQ("/* \\ \\ \\\n*/", format("\\\n/* \\ \\ \\\n*/")); 2888 } 2889 2890 TEST_F(FormatTest, DontCrashOnBlockComments) { 2891 EXPECT_EQ( 2892 "int xxxxxxxxx; /* " 2893 "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\n" 2894 "zzzzzz\n" 2895 "0*/", 2896 format("int xxxxxxxxx; /* " 2897 "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy zzzzzz\n" 2898 "0*/")); 2899 } 2900 2901 TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) { 2902 verifyFormat("#define A \\\n" 2903 " int v( \\\n" 2904 " a); \\\n" 2905 " int i;", 2906 getLLVMStyleWithColumns(11)); 2907 } 2908 2909 TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) { 2910 EXPECT_EQ( 2911 "#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2912 " \\\n" 2913 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 2914 "\n" 2915 "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 2916 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n", 2917 format(" #define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2918 "\\\n" 2919 "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 2920 " \n" 2921 " AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 2922 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n")); 2923 } 2924 2925 TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) { 2926 EXPECT_EQ("int\n" 2927 "#define A\n" 2928 " a;", 2929 format("int\n#define A\na;")); 2930 verifyFormat("functionCallTo(\n" 2931 " someOtherFunction(\n" 2932 " withSomeParameters, whichInSequence,\n" 2933 " areLongerThanALine(andAnotherCall,\n" 2934 "#define A B\n" 2935 " withMoreParamters,\n" 2936 " whichStronglyInfluenceTheLayout),\n" 2937 " andMoreParameters),\n" 2938 " trailing);", 2939 getLLVMStyleWithColumns(69)); 2940 verifyFormat("Foo::Foo()\n" 2941 "#ifdef BAR\n" 2942 " : baz(0)\n" 2943 "#endif\n" 2944 "{\n" 2945 "}"); 2946 verifyFormat("void f() {\n" 2947 " if (true)\n" 2948 "#ifdef A\n" 2949 " f(42);\n" 2950 " x();\n" 2951 "#else\n" 2952 " g();\n" 2953 " x();\n" 2954 "#endif\n" 2955 "}"); 2956 verifyFormat("void f(param1, param2,\n" 2957 " param3,\n" 2958 "#ifdef A\n" 2959 " param4(param5,\n" 2960 "#ifdef A1\n" 2961 " param6,\n" 2962 "#ifdef A2\n" 2963 " param7),\n" 2964 "#else\n" 2965 " param8),\n" 2966 " param9,\n" 2967 "#endif\n" 2968 " param10,\n" 2969 "#endif\n" 2970 " param11)\n" 2971 "#else\n" 2972 " param12)\n" 2973 "#endif\n" 2974 "{\n" 2975 " x();\n" 2976 "}", 2977 getLLVMStyleWithColumns(28)); 2978 verifyFormat("#if 1\n" 2979 "int i;"); 2980 verifyFormat( 2981 "#if 1\n" 2982 "#endif\n" 2983 "#if 1\n" 2984 "#else\n" 2985 "#endif\n"); 2986 verifyFormat("DEBUG({\n" 2987 " return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 2988 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" 2989 "});\n" 2990 "#if a\n" 2991 "#else\n" 2992 "#endif"); 2993 2994 verifyFormat("void f(\n" 2995 "#if A\n" 2996 " );\n" 2997 "#else\n" 2998 "#endif"); 2999 } 3000 3001 TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) { 3002 verifyFormat("#endif\n" 3003 "#if B"); 3004 } 3005 3006 TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) { 3007 FormatStyle SingleLine = getLLVMStyle(); 3008 SingleLine.AllowShortIfStatementsOnASingleLine = true; 3009 verifyFormat( 3010 "#if 0\n" 3011 "#elif 1\n" 3012 "#endif\n" 3013 "void foo() {\n" 3014 " if (test) foo2();\n" 3015 "}", 3016 SingleLine); 3017 } 3018 3019 TEST_F(FormatTest, LayoutBlockInsideParens) { 3020 EXPECT_EQ("functionCall({ int i; });", format(" functionCall ( {int i;} );")); 3021 EXPECT_EQ("functionCall({\n" 3022 " int i;\n" 3023 " int j;\n" 3024 "});", 3025 format(" functionCall ( {int i;int j;} );")); 3026 EXPECT_EQ("functionCall({\n" 3027 " int i;\n" 3028 " int j;\n" 3029 "}, aaaa, bbbb, cccc);", 3030 format(" functionCall ( {int i;int j;}, aaaa, bbbb, cccc);")); 3031 EXPECT_EQ("functionCall(\n" 3032 " {\n" 3033 " int i;\n" 3034 " int j;\n" 3035 " },\n" 3036 " aaaa, bbbb, // comment\n" 3037 " cccc);", 3038 format(" functionCall ( {int i;int j;}, aaaa, bbbb, // comment\n" 3039 "cccc);")); 3040 EXPECT_EQ("functionCall(aaaa, bbbb, { int i; });", 3041 format(" functionCall (aaaa, bbbb, {int i;});")); 3042 EXPECT_EQ("functionCall(aaaa, bbbb, {\n" 3043 " int i;\n" 3044 " int j;\n" 3045 "});", 3046 format(" functionCall (aaaa, bbbb, {int i;int j;});")); 3047 EXPECT_EQ("functionCall(aaaa, bbbb, { int i; });", 3048 format(" functionCall (aaaa, bbbb, {int i;});")); 3049 verifyFormat( 3050 "Aaa(\n" // FIXME: There shouldn't be a linebreak here. 3051 " {\n" 3052 " int i; // break\n" 3053 " },\n" 3054 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 3055 " ccccccccccccccccc));"); 3056 verifyFormat("DEBUG({\n" 3057 " if (a)\n" 3058 " f();\n" 3059 "});"); 3060 } 3061 3062 TEST_F(FormatTest, LayoutBlockInsideStatement) { 3063 EXPECT_EQ("SOME_MACRO { int i; }\n" 3064 "int i;", 3065 format(" SOME_MACRO {int i;} int i;")); 3066 } 3067 3068 TEST_F(FormatTest, LayoutNestedBlocks) { 3069 verifyFormat("void AddOsStrings(unsigned bitmask) {\n" 3070 " struct s {\n" 3071 " int i;\n" 3072 " };\n" 3073 " s kBitsToOs[] = {{10}};\n" 3074 " for (int i = 0; i < 10; ++i)\n" 3075 " return;\n" 3076 "}"); 3077 verifyFormat("call(parameter, {\n" 3078 " something();\n" 3079 " // Comment using all columns.\n" 3080 " somethingelse();\n" 3081 "});", 3082 getLLVMStyleWithColumns(40)); 3083 verifyFormat("DEBUG( //\n" 3084 " { f(); }, a);"); 3085 verifyFormat("DEBUG( //\n" 3086 " {\n" 3087 " f(); //\n" 3088 " },\n" 3089 " a);"); 3090 3091 EXPECT_EQ("call(parameter, {\n" 3092 " something();\n" 3093 " // Comment too\n" 3094 " // looooooooooong.\n" 3095 " somethingElse();\n" 3096 "});", 3097 format("call(parameter, {\n" 3098 " something();\n" 3099 " // Comment too looooooooooong.\n" 3100 " somethingElse();\n" 3101 "});", 3102 getLLVMStyleWithColumns(29))); 3103 EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int i; });")); 3104 EXPECT_EQ("DEBUG({ // comment\n" 3105 " int i;\n" 3106 "});", 3107 format("DEBUG({ // comment\n" 3108 "int i;\n" 3109 "});")); 3110 EXPECT_EQ("DEBUG({\n" 3111 " int i;\n" 3112 "\n" 3113 " // comment\n" 3114 " int j;\n" 3115 "});", 3116 format("DEBUG({\n" 3117 " int i;\n" 3118 "\n" 3119 " // comment\n" 3120 " int j;\n" 3121 "});")); 3122 3123 verifyFormat("DEBUG({\n" 3124 " if (a)\n" 3125 " return;\n" 3126 "});"); 3127 verifyGoogleFormat("DEBUG({\n" 3128 " if (a) return;\n" 3129 "});"); 3130 FormatStyle Style = getGoogleStyle(); 3131 Style.ColumnLimit = 45; 3132 verifyFormat("Debug(aaaaa, {\n" 3133 " if (aaaaaaaaaaaaaaaaaaaaaaaa) return;\n" 3134 "}, a);", 3135 Style); 3136 3137 verifyNoCrash("^{v^{a}}"); 3138 } 3139 3140 TEST_F(FormatTest, IndividualStatementsOfNestedBlocks) { 3141 EXPECT_EQ("DEBUG({\n" 3142 " int i;\n" 3143 " int j;\n" 3144 "});", 3145 format("DEBUG( {\n" 3146 " int i;\n" 3147 " int j;\n" 3148 "} ) ;", 3149 20, 1, getLLVMStyle())); 3150 EXPECT_EQ("DEBUG( {\n" 3151 " int i;\n" 3152 " int j;\n" 3153 "} ) ;", 3154 format("DEBUG( {\n" 3155 " int i;\n" 3156 " int j;\n" 3157 "} ) ;", 3158 41, 1, getLLVMStyle())); 3159 EXPECT_EQ("DEBUG( {\n" 3160 " int i;\n" 3161 " int j;\n" 3162 "} ) ;", 3163 format("DEBUG( {\n" 3164 " int i;\n" 3165 " int j;\n" 3166 "} ) ;", 3167 41, 1, getLLVMStyle())); 3168 EXPECT_EQ("DEBUG({\n" 3169 " int i;\n" 3170 " int j;\n" 3171 "});", 3172 format("DEBUG( {\n" 3173 " int i;\n" 3174 " int j;\n" 3175 "} ) ;", 3176 20, 1, getLLVMStyle())); 3177 3178 EXPECT_EQ("Debug({\n" 3179 " if (aaaaaaaaaaaaaaaaaaaaaaaa)\n" 3180 " return;\n" 3181 " },\n" 3182 " a);", 3183 format("Debug({\n" 3184 " if (aaaaaaaaaaaaaaaaaaaaaaaa)\n" 3185 " return;\n" 3186 " },\n" 3187 " a);", 3188 50, 1, getLLVMStyle())); 3189 EXPECT_EQ("DEBUG({\n" 3190 " DEBUG({\n" 3191 " int a;\n" 3192 " int b;\n" 3193 " }) ;\n" 3194 "});", 3195 format("DEBUG({\n" 3196 " DEBUG({\n" 3197 " int a;\n" 3198 " int b;\n" // Format this line only. 3199 " }) ;\n" // Don't touch this line. 3200 "});", 3201 35, 0, getLLVMStyle())); 3202 EXPECT_EQ("DEBUG({\n" 3203 " int a; //\n" 3204 "});", 3205 format("DEBUG({\n" 3206 " int a; //\n" 3207 "});", 3208 0, 0, getLLVMStyle())); 3209 } 3210 3211 TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) { 3212 EXPECT_EQ("{}", format("{}")); 3213 verifyFormat("enum E {};"); 3214 verifyFormat("enum E {}"); 3215 } 3216 3217 //===----------------------------------------------------------------------===// 3218 // Line break tests. 3219 //===----------------------------------------------------------------------===// 3220 3221 TEST_F(FormatTest, PreventConfusingIndents) { 3222 verifyFormat( 3223 "void f() {\n" 3224 " SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n" 3225 " parameter, parameter, parameter)),\n" 3226 " SecondLongCall(parameter));\n" 3227 "}"); 3228 verifyFormat( 3229 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3230 " aaaaaaaaaaaaaaaaaaaaaaaa(\n" 3231 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3232 " aaaaaaaaaaaaaaaaaaaaaaaa);"); 3233 verifyFormat( 3234 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3235 " [aaaaaaaaaaaaaaaaaaaaaaaa\n" 3236 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 3237 " [aaaaaaaaaaaaaaaaaaaaaaaa]];"); 3238 verifyFormat( 3239 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 3240 " aaaaaaaaaaaaaaaaaaaaaaaa<\n" 3241 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n" 3242 " aaaaaaaaaaaaaaaaaaaaaaaa>;"); 3243 verifyFormat("int a = bbbb && ccc && fffff(\n" 3244 "#define A Just forcing a new line\n" 3245 " ddd);"); 3246 } 3247 3248 TEST_F(FormatTest, LineBreakingInBinaryExpressions) { 3249 verifyFormat( 3250 "bool aaaaaaa =\n" 3251 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n" 3252 " bbbbbbbb();"); 3253 verifyFormat( 3254 "bool aaaaaaa =\n" 3255 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n" 3256 " bbbbbbbb();"); 3257 3258 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3259 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n" 3260 " ccccccccc == ddddddddddd;"); 3261 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3262 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n" 3263 " ccccccccc == ddddddddddd;"); 3264 verifyFormat( 3265 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 3266 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n" 3267 " ccccccccc == ddddddddddd;"); 3268 3269 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3270 " aaaaaa) &&\n" 3271 " bbbbbb && cccccc;"); 3272 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3273 " aaaaaa) >>\n" 3274 " bbbbbb;"); 3275 verifyFormat("Whitespaces.addUntouchableComment(\n" 3276 " SourceMgr.getSpellingColumnNumber(\n" 3277 " TheLine.Last->FormatTok.Tok.getLocation()) -\n" 3278 " 1);"); 3279 3280 verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3281 " bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n" 3282 " cccccc) {\n}"); 3283 verifyFormat("b = a &&\n" 3284 " // Comment\n" 3285 " b.c && d;"); 3286 3287 // If the LHS of a comparison is not a binary expression itself, the 3288 // additional linebreak confuses many people. 3289 verifyFormat( 3290 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3291 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n" 3292 "}"); 3293 verifyFormat( 3294 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3295 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3296 "}"); 3297 verifyFormat( 3298 "if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n" 3299 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3300 "}"); 3301 // Even explicit parentheses stress the precedence enough to make the 3302 // additional break unnecessary. 3303 verifyFormat( 3304 "if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3305 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3306 "}"); 3307 // This cases is borderline, but with the indentation it is still readable. 3308 verifyFormat( 3309 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3310 " aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3311 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 3312 "}", 3313 getLLVMStyleWithColumns(75)); 3314 3315 // If the LHS is a binary expression, we should still use the additional break 3316 // as otherwise the formatting hides the operator precedence. 3317 verifyFormat( 3318 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3319 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3320 " 5) {\n" 3321 "}"); 3322 3323 FormatStyle OnePerLine = getLLVMStyle(); 3324 OnePerLine.BinPackParameters = false; 3325 verifyFormat( 3326 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3327 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3328 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}", 3329 OnePerLine); 3330 } 3331 3332 TEST_F(FormatTest, ExpressionIndentation) { 3333 verifyFormat("bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3334 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3335 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3336 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3337 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb +\n" 3338 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb &&\n" 3339 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3340 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >\n" 3341 " ccccccccccccccccccccccccccccccccccccccccc;"); 3342 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3343 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3344 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3345 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3346 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3347 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3348 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3349 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3350 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3351 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3352 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3353 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3354 verifyFormat("if () {\n" 3355 "} else if (aaaaa &&\n" 3356 " bbbbb > // break\n" 3357 " ccccc) {\n" 3358 "}"); 3359 3360 // Presence of a trailing comment used to change indentation of b. 3361 verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n" 3362 " b;\n" 3363 "return aaaaaaaaaaaaaaaaaaa +\n" 3364 " b; //", 3365 getLLVMStyleWithColumns(30)); 3366 } 3367 3368 TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) { 3369 // Not sure what the best system is here. Like this, the LHS can be found 3370 // immediately above an operator (everything with the same or a higher 3371 // indent). The RHS is aligned right of the operator and so compasses 3372 // everything until something with the same indent as the operator is found. 3373 // FIXME: Is this a good system? 3374 FormatStyle Style = getLLVMStyle(); 3375 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 3376 verifyFormat( 3377 "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3378 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3379 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3380 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3381 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3382 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3383 " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3384 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3385 " > ccccccccccccccccccccccccccccccccccccccccc;", 3386 Style); 3387 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3388 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3389 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3390 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3391 Style); 3392 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3393 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3394 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3395 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3396 Style); 3397 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3398 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3399 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3400 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3401 Style); 3402 verifyFormat("if () {\n" 3403 "} else if (aaaaa\n" 3404 " && bbbbb // break\n" 3405 " > ccccc) {\n" 3406 "}", 3407 Style); 3408 verifyFormat("return (a)\n" 3409 " // comment\n" 3410 " + b;", 3411 Style); 3412 verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3413 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3414 " + cc;", 3415 Style); 3416 3417 // Forced by comments. 3418 verifyFormat( 3419 "unsigned ContentSize =\n" 3420 " sizeof(int16_t) // DWARF ARange version number\n" 3421 " + sizeof(int32_t) // Offset of CU in the .debug_info section\n" 3422 " + sizeof(int8_t) // Pointer Size (in bytes)\n" 3423 " + sizeof(int8_t); // Segment Size (in bytes)"); 3424 3425 verifyFormat("return boost::fusion::at_c<0>(iiii).second\n" 3426 " == boost::fusion::at_c<1>(iiii).second;", 3427 Style); 3428 3429 Style.ColumnLimit = 60; 3430 verifyFormat("zzzzzzzzzz\n" 3431 " = bbbbbbbbbbbbbbbbb\n" 3432 " >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);", 3433 Style); 3434 } 3435 3436 TEST_F(FormatTest, NoOperandAlignment) { 3437 FormatStyle Style = getLLVMStyle(); 3438 Style.AlignOperands = false; 3439 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; 3440 verifyFormat( 3441 "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3442 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3443 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3444 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3445 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3446 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3447 " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3448 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3449 " > ccccccccccccccccccccccccccccccccccccccccc;", 3450 Style); 3451 3452 verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3453 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3454 " + cc;", 3455 Style); 3456 verifyFormat("int a = aa\n" 3457 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3458 " * cccccccccccccccccccccccccccccccccccc;", 3459 Style); 3460 3461 Style.AlignAfterOpenBracket = false; 3462 verifyFormat("return (a > b\n" 3463 " // comment1\n" 3464 " // comment2\n" 3465 " || c);", 3466 Style); 3467 } 3468 3469 TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) { 3470 FormatStyle Style = getLLVMStyle(); 3471 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; 3472 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 3473 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3474 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;", 3475 Style); 3476 } 3477 3478 TEST_F(FormatTest, ConstructorInitializers) { 3479 verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}"); 3480 verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}", 3481 getLLVMStyleWithColumns(45)); 3482 verifyFormat("Constructor()\n" 3483 " : Inttializer(FitsOnTheLine) {}", 3484 getLLVMStyleWithColumns(44)); 3485 verifyFormat("Constructor()\n" 3486 " : Inttializer(FitsOnTheLine) {}", 3487 getLLVMStyleWithColumns(43)); 3488 3489 verifyFormat( 3490 "SomeClass::Constructor()\n" 3491 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3492 3493 verifyFormat( 3494 "SomeClass::Constructor()\n" 3495 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3496 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}"); 3497 verifyFormat( 3498 "SomeClass::Constructor()\n" 3499 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3500 " aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3501 3502 verifyFormat("Constructor()\n" 3503 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3504 " aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3505 " aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3506 " aaaaaaaaaaaaaaaaaaaaaaa() {}"); 3507 3508 verifyFormat("Constructor()\n" 3509 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3510 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3511 3512 verifyFormat("Constructor(int Parameter = 0)\n" 3513 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n" 3514 " aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}"); 3515 verifyFormat("Constructor()\n" 3516 " : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n" 3517 "}", 3518 getLLVMStyleWithColumns(60)); 3519 verifyFormat("Constructor()\n" 3520 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3521 " aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}"); 3522 3523 // Here a line could be saved by splitting the second initializer onto two 3524 // lines, but that is not desirable. 3525 verifyFormat("Constructor()\n" 3526 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n" 3527 " aaaaaaaaaaa(aaaaaaaaaaa),\n" 3528 " aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3529 3530 FormatStyle OnePerLine = getLLVMStyle(); 3531 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3532 verifyFormat("SomeClass::Constructor()\n" 3533 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3534 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3535 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3536 OnePerLine); 3537 verifyFormat("SomeClass::Constructor()\n" 3538 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n" 3539 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3540 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3541 OnePerLine); 3542 verifyFormat("MyClass::MyClass(int var)\n" 3543 " : some_var_(var), // 4 space indent\n" 3544 " some_other_var_(var + 1) { // lined up\n" 3545 "}", 3546 OnePerLine); 3547 verifyFormat("Constructor()\n" 3548 " : aaaaa(aaaaaa),\n" 3549 " aaaaa(aaaaaa),\n" 3550 " aaaaa(aaaaaa),\n" 3551 " aaaaa(aaaaaa),\n" 3552 " aaaaa(aaaaaa) {}", 3553 OnePerLine); 3554 verifyFormat("Constructor()\n" 3555 " : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n" 3556 " aaaaaaaaaaaaaaaaaaaaaa) {}", 3557 OnePerLine); 3558 3559 EXPECT_EQ("Constructor()\n" 3560 " : // Comment forcing unwanted break.\n" 3561 " aaaa(aaaa) {}", 3562 format("Constructor() :\n" 3563 " // Comment forcing unwanted break.\n" 3564 " aaaa(aaaa) {}")); 3565 } 3566 3567 TEST_F(FormatTest, MemoizationTests) { 3568 // This breaks if the memoization lookup does not take \c Indent and 3569 // \c LastSpace into account. 3570 verifyFormat( 3571 "extern CFRunLoopTimerRef\n" 3572 "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n" 3573 " CFTimeInterval interval, CFOptionFlags flags,\n" 3574 " CFIndex order, CFRunLoopTimerCallBack callout,\n" 3575 " CFRunLoopTimerContext *context) {}"); 3576 3577 // Deep nesting somewhat works around our memoization. 3578 verifyFormat( 3579 "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3580 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3581 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3582 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3583 " aaaaa())))))))))))))))))))))))))))))))))))))));", 3584 getLLVMStyleWithColumns(65)); 3585 verifyFormat( 3586 "aaaaa(\n" 3587 " aaaaa,\n" 3588 " aaaaa(\n" 3589 " aaaaa,\n" 3590 " aaaaa(\n" 3591 " aaaaa,\n" 3592 " aaaaa(\n" 3593 " aaaaa,\n" 3594 " aaaaa(\n" 3595 " aaaaa,\n" 3596 " aaaaa(\n" 3597 " aaaaa,\n" 3598 " aaaaa(\n" 3599 " aaaaa,\n" 3600 " aaaaa(\n" 3601 " aaaaa,\n" 3602 " aaaaa(\n" 3603 " aaaaa,\n" 3604 " aaaaa(\n" 3605 " aaaaa,\n" 3606 " aaaaa(\n" 3607 " aaaaa,\n" 3608 " aaaaa(\n" 3609 " aaaaa,\n" 3610 " aaaaa))))))))))));", 3611 getLLVMStyleWithColumns(65)); 3612 verifyFormat( 3613 "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" 3614 " a),\n" 3615 " a),\n" 3616 " a),\n" 3617 " a),\n" 3618 " a),\n" 3619 " a),\n" 3620 " a),\n" 3621 " a),\n" 3622 " a),\n" 3623 " a),\n" 3624 " a),\n" 3625 " a),\n" 3626 " a),\n" 3627 " a),\n" 3628 " a),\n" 3629 " a),\n" 3630 " a)", 3631 getLLVMStyleWithColumns(65)); 3632 3633 // This test takes VERY long when memoization is broken. 3634 FormatStyle OnePerLine = getLLVMStyle(); 3635 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3636 OnePerLine.BinPackParameters = false; 3637 std::string input = "Constructor()\n" 3638 " : aaaa(a,\n"; 3639 for (unsigned i = 0, e = 80; i != e; ++i) { 3640 input += " a,\n"; 3641 } 3642 input += " a) {}"; 3643 verifyFormat(input, OnePerLine); 3644 } 3645 3646 TEST_F(FormatTest, BreaksAsHighAsPossible) { 3647 verifyFormat( 3648 "void f() {\n" 3649 " if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n" 3650 " (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n" 3651 " f();\n" 3652 "}"); 3653 verifyFormat("if (Intervals[i].getRange().getFirst() <\n" 3654 " Intervals[i - 1].getRange().getLast()) {\n}"); 3655 } 3656 3657 TEST_F(FormatTest, BreaksFunctionDeclarations) { 3658 // Principially, we break function declarations in a certain order: 3659 // 1) break amongst arguments. 3660 verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n" 3661 " Cccccccccccccc cccccccccccccc);"); 3662 verifyFormat( 3663 "template <class TemplateIt>\n" 3664 "SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n" 3665 " TemplateIt *stop) {}"); 3666 3667 // 2) break after return type. 3668 verifyFormat( 3669 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3670 "bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);", 3671 getGoogleStyle()); 3672 3673 // 3) break after (. 3674 verifyFormat( 3675 "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n" 3676 " Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);", 3677 getGoogleStyle()); 3678 3679 // 4) break before after nested name specifiers. 3680 verifyFormat( 3681 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3682 "SomeClasssssssssssssssssssssssssssssssssssssss::\n" 3683 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);", 3684 getGoogleStyle()); 3685 3686 // However, there are exceptions, if a sufficient amount of lines can be 3687 // saved. 3688 // FIXME: The precise cut-offs wrt. the number of saved lines might need some 3689 // more adjusting. 3690 verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3691 " Cccccccccccccc cccccccccc,\n" 3692 " Cccccccccccccc cccccccccc,\n" 3693 " Cccccccccccccc cccccccccc,\n" 3694 " Cccccccccccccc cccccccccc);"); 3695 verifyFormat( 3696 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3697 "bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3698 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3699 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);", 3700 getGoogleStyle()); 3701 verifyFormat( 3702 "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3703 " Cccccccccccccc cccccccccc,\n" 3704 " Cccccccccccccc cccccccccc,\n" 3705 " Cccccccccccccc cccccccccc,\n" 3706 " Cccccccccccccc cccccccccc,\n" 3707 " Cccccccccccccc cccccccccc,\n" 3708 " Cccccccccccccc cccccccccc);"); 3709 verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 3710 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3711 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3712 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3713 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);"); 3714 3715 // Break after multi-line parameters. 3716 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3717 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3718 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3719 " bbbb bbbb);"); 3720 verifyFormat("void SomeLoooooooooooongFunction(\n" 3721 " std::unique_ptr<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n" 3722 " aaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3723 " int bbbbbbbbbbbbb);"); 3724 3725 // Treat overloaded operators like other functions. 3726 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3727 "operator>(const SomeLoooooooooooooooooooooooooogType &other);"); 3728 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3729 "operator>>(const SomeLooooooooooooooooooooooooogType &other);"); 3730 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3731 "operator<<(const SomeLooooooooooooooooooooooooogType &other);"); 3732 verifyGoogleFormat( 3733 "SomeLoooooooooooooooooooooooooooooogType operator>>(\n" 3734 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3735 verifyGoogleFormat( 3736 "SomeLoooooooooooooooooooooooooooooogType operator<<(\n" 3737 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3738 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3739 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3740 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n" 3741 "aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3742 verifyGoogleFormat( 3743 "typename aaaaaaaaaa<aaaaaa>::aaaaaaaaaaa\n" 3744 "aaaaaaaaaa<aaaaaa>::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3745 " bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}"); 3746 } 3747 3748 TEST_F(FormatTest, TrailingReturnType) { 3749 verifyFormat("auto foo() -> int;\n"); 3750 verifyFormat("struct S {\n" 3751 " auto bar() const -> int;\n" 3752 "};"); 3753 verifyFormat("template <size_t Order, typename T>\n" 3754 "auto load_img(const std::string &filename)\n" 3755 " -> alias::tensor<Order, T, mem::tag::cpu> {}"); 3756 verifyFormat("auto SomeFunction(A aaaaaaaaaaaaaaaaaaaaa) const\n" 3757 " -> decltype(f(aaaaaaaaaaaaaaaaaaaaa)) {}"); 3758 verifyFormat("auto doSomething(Aaaaaa *aaaaaa) -> decltype(aaaaaa->f()) {}"); 3759 3760 // Not trailing return types. 3761 verifyFormat("void f() { auto a = b->c(); }"); 3762 } 3763 3764 TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) { 3765 // Avoid breaking before trailing 'const' or other trailing annotations, if 3766 // they are not function-like. 3767 FormatStyle Style = getGoogleStyle(); 3768 Style.ColumnLimit = 47; 3769 verifyFormat("void someLongFunction(\n" 3770 " int someLoooooooooooooongParameter) const {\n}", 3771 getLLVMStyleWithColumns(47)); 3772 verifyFormat("LoooooongReturnType\n" 3773 "someLoooooooongFunction() const {}", 3774 getLLVMStyleWithColumns(47)); 3775 verifyFormat("LoooooongReturnType someLoooooooongFunction()\n" 3776 " const {}", 3777 Style); 3778 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3779 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;"); 3780 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3781 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;"); 3782 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3783 " aaaaa aaaaaaaaaaaaaaaaaaaa) override final;"); 3784 verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n" 3785 " aaaaaaaaaaa aaaaa) const override;"); 3786 verifyGoogleFormat( 3787 "virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 3788 " const override;"); 3789 3790 // Even if the first parameter has to be wrapped. 3791 verifyFormat("void someLongFunction(\n" 3792 " int someLongParameter) const {}", 3793 getLLVMStyleWithColumns(46)); 3794 verifyFormat("void someLongFunction(\n" 3795 " int someLongParameter) const {}", 3796 Style); 3797 verifyFormat("void someLongFunction(\n" 3798 " int someLongParameter) override {}", 3799 Style); 3800 verifyFormat("void someLongFunction(\n" 3801 " int someLongParameter) OVERRIDE {}", 3802 Style); 3803 verifyFormat("void someLongFunction(\n" 3804 " int someLongParameter) final {}", 3805 Style); 3806 verifyFormat("void someLongFunction(\n" 3807 " int someLongParameter) FINAL {}", 3808 Style); 3809 verifyFormat("void someLongFunction(\n" 3810 " int parameter) const override {}", 3811 Style); 3812 3813 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 3814 verifyFormat("void someLongFunction(\n" 3815 " int someLongParameter) const\n" 3816 "{\n" 3817 "}", 3818 Style); 3819 3820 // Unless these are unknown annotations. 3821 verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n" 3822 " aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3823 " LONG_AND_UGLY_ANNOTATION;"); 3824 3825 // Breaking before function-like trailing annotations is fine to keep them 3826 // close to their arguments. 3827 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3828 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3829 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3830 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3831 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3832 " LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}"); 3833 verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n" 3834 " AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);"); 3835 verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});"); 3836 3837 verifyFormat( 3838 "void aaaaaaaaaaaaaaaaaa()\n" 3839 " __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n" 3840 " aaaaaaaaaaaaaaaaaaaaaaaaa));"); 3841 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3842 " __attribute__((unused));"); 3843 verifyGoogleFormat( 3844 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3845 " GUARDED_BY(aaaaaaaaaaaa);"); 3846 verifyGoogleFormat( 3847 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3848 " GUARDED_BY(aaaaaaaaaaaa);"); 3849 verifyGoogleFormat( 3850 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n" 3851 " aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 3852 } 3853 3854 TEST_F(FormatTest, BreaksDesireably) { 3855 verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 3856 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 3857 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}"); 3858 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3859 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" 3860 "}"); 3861 3862 verifyFormat( 3863 "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3864 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3865 3866 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3867 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3868 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3869 3870 verifyFormat( 3871 "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3872 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 3873 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3874 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));"); 3875 3876 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3877 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3878 3879 verifyFormat( 3880 "void f() {\n" 3881 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 3882 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 3883 "}"); 3884 verifyFormat( 3885 "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3886 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3887 verifyFormat( 3888 "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3889 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3890 verifyFormat( 3891 "aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3892 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3893 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3894 3895 // Indent consistently independent of call expression. 3896 verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n" 3897 " dddddddddddddddddddddddddddddd));\n" 3898 "aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 3899 " dddddddddddddddddddddddddddddd));"); 3900 3901 // This test case breaks on an incorrect memoization, i.e. an optimization not 3902 // taking into account the StopAt value. 3903 verifyFormat( 3904 "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3905 " aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3906 " aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3907 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3908 3909 verifyFormat("{\n {\n {\n" 3910 " Annotation.SpaceRequiredBefore =\n" 3911 " Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n" 3912 " Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n" 3913 " }\n }\n}"); 3914 3915 // Break on an outer level if there was a break on an inner level. 3916 EXPECT_EQ("f(g(h(a, // comment\n" 3917 " b, c),\n" 3918 " d, e),\n" 3919 " x, y);", 3920 format("f(g(h(a, // comment\n" 3921 " b, c), d, e), x, y);")); 3922 3923 // Prefer breaking similar line breaks. 3924 verifyFormat( 3925 "const int kTrackingOptions = NSTrackingMouseMoved |\n" 3926 " NSTrackingMouseEnteredAndExited |\n" 3927 " NSTrackingActiveAlways;"); 3928 } 3929 3930 TEST_F(FormatTest, FormatsDeclarationsOnePerLine) { 3931 FormatStyle NoBinPacking = getGoogleStyle(); 3932 NoBinPacking.BinPackParameters = false; 3933 NoBinPacking.BinPackArguments = true; 3934 verifyFormat("void f() {\n" 3935 " f(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaa,\n" 3936 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 3937 "}", 3938 NoBinPacking); 3939 verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaa,\n" 3940 " int aaaaaaaaaaaaaaaaaaaa,\n" 3941 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 3942 NoBinPacking); 3943 } 3944 3945 TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) { 3946 FormatStyle NoBinPacking = getGoogleStyle(); 3947 NoBinPacking.BinPackParameters = false; 3948 NoBinPacking.BinPackArguments = false; 3949 verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n" 3950 " aaaaaaaaaaaaaaaaaaaa,\n" 3951 " aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);", 3952 NoBinPacking); 3953 verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n" 3954 " aaaaaaaaaaaaa,\n" 3955 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));", 3956 NoBinPacking); 3957 verifyFormat( 3958 "aaaaaaaa(aaaaaaaaaaaaa,\n" 3959 " aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3960 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 3961 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3962 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));", 3963 NoBinPacking); 3964 verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 3965 " .aaaaaaaaaaaaaaaaaa();", 3966 NoBinPacking); 3967 verifyFormat("void f() {\n" 3968 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3969 " aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n" 3970 "}", 3971 NoBinPacking); 3972 3973 verifyFormat( 3974 "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3975 " aaaaaaaaaaaa,\n" 3976 " aaaaaaaaaaaa);", 3977 NoBinPacking); 3978 verifyFormat( 3979 "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n" 3980 " ddddddddddddddddddddddddddddd),\n" 3981 " test);", 3982 NoBinPacking); 3983 3984 verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n" 3985 " aaaaaaaaaaaaaaaaaaaaaaa,\n" 3986 " aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;", 3987 NoBinPacking); 3988 verifyFormat("a(\"a\"\n" 3989 " \"a\",\n" 3990 " a);"); 3991 3992 NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false; 3993 verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n" 3994 " aaaaaaaaa,\n" 3995 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 3996 NoBinPacking); 3997 verifyFormat( 3998 "void f() {\n" 3999 " aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 4000 " .aaaaaaa();\n" 4001 "}", 4002 NoBinPacking); 4003 verifyFormat( 4004 "template <class SomeType, class SomeOtherType>\n" 4005 "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}", 4006 NoBinPacking); 4007 } 4008 4009 TEST_F(FormatTest, AdaptiveOnePerLineFormatting) { 4010 FormatStyle Style = getLLVMStyleWithColumns(15); 4011 Style.ExperimentalAutoDetectBinPacking = true; 4012 EXPECT_EQ("aaa(aaaa,\n" 4013 " aaaa,\n" 4014 " aaaa);\n" 4015 "aaa(aaaa,\n" 4016 " aaaa,\n" 4017 " aaaa);", 4018 format("aaa(aaaa,\n" // one-per-line 4019 " aaaa,\n" 4020 " aaaa );\n" 4021 "aaa(aaaa, aaaa, aaaa);", // inconclusive 4022 Style)); 4023 EXPECT_EQ("aaa(aaaa, aaaa,\n" 4024 " aaaa);\n" 4025 "aaa(aaaa, aaaa,\n" 4026 " aaaa);", 4027 format("aaa(aaaa, aaaa,\n" // bin-packed 4028 " aaaa );\n" 4029 "aaa(aaaa, aaaa, aaaa);", // inconclusive 4030 Style)); 4031 } 4032 4033 TEST_F(FormatTest, FormatsBuilderPattern) { 4034 verifyFormat( 4035 "return llvm::StringSwitch<Reference::Kind>(name)\n" 4036 " .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n" 4037 " .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n" 4038 " .StartsWith(\".init\", ORDER_INIT)\n" 4039 " .StartsWith(\".fini\", ORDER_FINI)\n" 4040 " .StartsWith(\".hash\", ORDER_HASH)\n" 4041 " .Default(ORDER_TEXT);\n"); 4042 4043 verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n" 4044 " aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();"); 4045 verifyFormat( 4046 "aaaaaaa->aaaaaaa->aaaaaaaaaaaaaaaa(\n" 4047 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4048 " ->aaaaaaaa(aaaaaaaaaaaaaaa);"); 4049 verifyFormat( 4050 "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n" 4051 " aaaaaaaaaaaaaa);"); 4052 verifyFormat( 4053 "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n" 4054 " aaaaaa->aaaaaaaaaaaa()\n" 4055 " ->aaaaaaaaaaaaaaaa(\n" 4056 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4057 " ->aaaaaaaaaaaaaaaaa();"); 4058 verifyGoogleFormat( 4059 "void f() {\n" 4060 " someo->Add((new util::filetools::Handler(dir))\n" 4061 " ->OnEvent1(NewPermanentCallback(\n" 4062 " this, &HandlerHolderClass::EventHandlerCBA))\n" 4063 " ->OnEvent2(NewPermanentCallback(\n" 4064 " this, &HandlerHolderClass::EventHandlerCBB))\n" 4065 " ->OnEvent3(NewPermanentCallback(\n" 4066 " this, &HandlerHolderClass::EventHandlerCBC))\n" 4067 " ->OnEvent5(NewPermanentCallback(\n" 4068 " this, &HandlerHolderClass::EventHandlerCBD))\n" 4069 " ->OnEvent6(NewPermanentCallback(\n" 4070 " this, &HandlerHolderClass::EventHandlerCBE)));\n" 4071 "}"); 4072 4073 verifyFormat( 4074 "aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();"); 4075 verifyFormat("aaaaaaaaaaaaaaa()\n" 4076 " .aaaaaaaaaaaaaaa()\n" 4077 " .aaaaaaaaaaaaaaa()\n" 4078 " .aaaaaaaaaaaaaaa()\n" 4079 " .aaaaaaaaaaaaaaa();"); 4080 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4081 " .aaaaaaaaaaaaaaa()\n" 4082 " .aaaaaaaaaaaaaaa()\n" 4083 " .aaaaaaaaaaaaaaa();"); 4084 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4085 " .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4086 " .aaaaaaaaaaaaaaa();"); 4087 verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n" 4088 " ->aaaaaaaaaaaaaae(0)\n" 4089 " ->aaaaaaaaaaaaaaa();"); 4090 4091 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 4092 " .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4093 " .has<bbbbbbbbbbbbbbbbbbbbb>();"); 4094 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 4095 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 4096 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();"); 4097 4098 // Prefer not to break after empty parentheses. 4099 verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n" 4100 " First->LastNewlineOffset);"); 4101 } 4102 4103 TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) { 4104 verifyFormat( 4105 "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 4106 " bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}"); 4107 verifyFormat( 4108 "if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n" 4109 " bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}"); 4110 4111 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 4112 " ccccccccccccccccccccccccc) {\n}"); 4113 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n" 4114 " ccccccccccccccccccccccccc) {\n}"); 4115 4116 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 4117 " ccccccccccccccccccccccccc) {\n}"); 4118 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n" 4119 " ccccccccccccccccccccccccc) {\n}"); 4120 4121 verifyFormat( 4122 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n" 4123 " ccccccccccccccccccccccccc) {\n}"); 4124 verifyFormat( 4125 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n" 4126 " ccccccccccccccccccccccccc) {\n}"); 4127 4128 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n" 4129 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n" 4130 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n" 4131 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 4132 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n" 4133 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n" 4134 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n" 4135 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 4136 4137 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n" 4138 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n" 4139 " aaaaaaaaaaaaaaa != aa) {\n}"); 4140 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n" 4141 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n" 4142 " aaaaaaaaaaaaaaa != aa) {\n}"); 4143 } 4144 4145 TEST_F(FormatTest, BreaksAfterAssignments) { 4146 verifyFormat( 4147 "unsigned Cost =\n" 4148 " TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n" 4149 " SI->getPointerAddressSpaceee());\n"); 4150 verifyFormat( 4151 "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n" 4152 " Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());"); 4153 4154 verifyFormat( 4155 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n" 4156 " aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);"); 4157 verifyFormat("unsigned OriginalStartColumn =\n" 4158 " SourceMgr.getSpellingColumnNumber(\n" 4159 " Current.FormatTok.getStartOfNonWhitespace()) -\n" 4160 " 1;"); 4161 } 4162 4163 TEST_F(FormatTest, AlignsAfterAssignments) { 4164 verifyFormat( 4165 "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4166 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4167 verifyFormat( 4168 "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4169 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4170 verifyFormat( 4171 "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4172 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4173 verifyFormat( 4174 "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4175 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 4176 verifyFormat( 4177 "double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n" 4178 " aaaaaaaaaaaaaaaaaaaaaaaa +\n" 4179 " aaaaaaaaaaaaaaaaaaaaaaaa;"); 4180 } 4181 4182 TEST_F(FormatTest, AlignsAfterReturn) { 4183 verifyFormat( 4184 "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4185 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4186 verifyFormat( 4187 "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4188 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 4189 verifyFormat( 4190 "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 4191 " aaaaaaaaaaaaaaaaaaaaaa();"); 4192 verifyFormat( 4193 "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 4194 " aaaaaaaaaaaaaaaaaaaaaa());"); 4195 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4196 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4197 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4198 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n" 4199 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4200 verifyFormat("return\n" 4201 " // true if code is one of a or b.\n" 4202 " code == a || code == b;"); 4203 } 4204 4205 TEST_F(FormatTest, AlignsAfterOpenBracket) { 4206 verifyFormat( 4207 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" 4208 " aaaaaaaaa aaaaaaa) {}"); 4209 verifyFormat( 4210 "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" 4211 " aaaaaaaaaaa aaaaaaaaa);"); 4212 verifyFormat( 4213 "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" 4214 " aaaaaaaaaaaaaaaaaaaaa));"); 4215 FormatStyle Style = getLLVMStyle(); 4216 Style.AlignAfterOpenBracket = false; 4217 verifyFormat( 4218 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4219 " aaaaaaaaaaa aaaaaaaa, aaaaaaaaa aaaaaaa) {}", 4220 Style); 4221 verifyFormat( 4222 "SomeLongVariableName->someVeryLongFunctionName(\n" 4223 " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaa aaaaaaaaa);", 4224 Style); 4225 verifyFormat( 4226 "SomeLongVariableName->someFunction(\n" 4227 " foooooooo(aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa));", 4228 Style); 4229 verifyFormat( 4230 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" 4231 " aaaaaaaaa aaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 4232 Style); 4233 verifyFormat( 4234 "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" 4235 " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4236 Style); 4237 verifyFormat( 4238 "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" 4239 " aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));", 4240 Style); 4241 } 4242 4243 TEST_F(FormatTest, ParenthesesAndOperandAlignment) { 4244 FormatStyle Style = getLLVMStyleWithColumns(40); 4245 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4246 " bbbbbbbbbbbbbbbbbbbbbb);", 4247 Style); 4248 Style.AlignAfterOpenBracket = true; 4249 Style.AlignOperands = false; 4250 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4251 " bbbbbbbbbbbbbbbbbbbbbb);", 4252 Style); 4253 Style.AlignAfterOpenBracket = false; 4254 Style.AlignOperands = true; 4255 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4256 " bbbbbbbbbbbbbbbbbbbbbb);", 4257 Style); 4258 Style.AlignAfterOpenBracket = false; 4259 Style.AlignOperands = false; 4260 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4261 " bbbbbbbbbbbbbbbbbbbbbb);", 4262 Style); 4263 } 4264 4265 TEST_F(FormatTest, BreaksConditionalExpressions) { 4266 verifyFormat( 4267 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4268 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4269 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4270 verifyFormat( 4271 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4272 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4273 verifyFormat( 4274 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n" 4275 " : aaaaaaaaaaaaa);"); 4276 verifyFormat( 4277 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4278 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4279 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4280 " aaaaaaaaaaaaa);"); 4281 verifyFormat( 4282 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4283 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4284 " aaaaaaaaaaaaa);"); 4285 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4286 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4287 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4288 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4289 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4290 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4291 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4292 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4293 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4294 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4295 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4296 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4297 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4298 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4299 " ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4300 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4301 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4302 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4303 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4304 " : aaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4305 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 4306 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4307 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4308 " : aaaaaaaaaaaaaaaa;"); 4309 verifyFormat( 4310 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4311 " ? aaaaaaaaaaaaaaa\n" 4312 " : aaaaaaaaaaaaaaa;"); 4313 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 4314 " aaaaaaaaa\n" 4315 " ? b\n" 4316 " : c);"); 4317 verifyFormat("return aaaa == bbbb\n" 4318 " // comment\n" 4319 " ? aaaa\n" 4320 " : bbbb;"); 4321 verifyFormat( 4322 "unsigned Indent =\n" 4323 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n" 4324 " ? IndentForLevel[TheLine.Level]\n" 4325 " : TheLine * 2,\n" 4326 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4327 getLLVMStyleWithColumns(70)); 4328 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4329 " ? aaaaaaaaaaaaaaa\n" 4330 " : bbbbbbbbbbbbbbb //\n" 4331 " ? ccccccccccccccc\n" 4332 " : ddddddddddddddd;"); 4333 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4334 " ? aaaaaaaaaaaaaaa\n" 4335 " : (bbbbbbbbbbbbbbb //\n" 4336 " ? ccccccccccccccc\n" 4337 " : ddddddddddddddd);"); 4338 verifyFormat( 4339 "int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4340 " ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4341 " aaaaaaaaaaaaaaaaaaaaa +\n" 4342 " aaaaaaaaaaaaaaaaaaaaa\n" 4343 " : aaaaaaaaaa;"); 4344 verifyFormat( 4345 "aaaaaa = aaaaaaaaaaaa\n" 4346 " ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4347 " : aaaaaaaaaaaaaaaaaaaaaa\n" 4348 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4349 4350 FormatStyle NoBinPacking = getLLVMStyle(); 4351 NoBinPacking.BinPackArguments = false; 4352 verifyFormat( 4353 "void f() {\n" 4354 " g(aaa,\n" 4355 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4356 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4357 " ? aaaaaaaaaaaaaaa\n" 4358 " : aaaaaaaaaaaaaaa);\n" 4359 "}", 4360 NoBinPacking); 4361 verifyFormat( 4362 "void f() {\n" 4363 " g(aaa,\n" 4364 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4365 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4366 " ?: aaaaaaaaaaaaaaa);\n" 4367 "}", 4368 NoBinPacking); 4369 4370 verifyFormat("SomeFunction(aaaaaaaaaaaaaaaaa,\n" 4371 " // comment.\n" 4372 " ccccccccccccccccccccccccccccccccccccccc\n" 4373 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4374 " : bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);"); 4375 4376 // Assignments in conditional expressions. Apparently not uncommon :-(. 4377 verifyFormat("return a != b\n" 4378 " // comment\n" 4379 " ? a = b\n" 4380 " : a = b;"); 4381 verifyFormat("return a != b\n" 4382 " // comment\n" 4383 " ? a = a != b\n" 4384 " // comment\n" 4385 " ? a = b\n" 4386 " : a\n" 4387 " : a;\n"); 4388 verifyFormat("return a != b\n" 4389 " // comment\n" 4390 " ? a\n" 4391 " : a = a != b\n" 4392 " // comment\n" 4393 " ? a = b\n" 4394 " : a;"); 4395 } 4396 4397 TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) { 4398 FormatStyle Style = getLLVMStyle(); 4399 Style.BreakBeforeTernaryOperators = false; 4400 Style.ColumnLimit = 70; 4401 verifyFormat( 4402 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4403 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4404 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4405 Style); 4406 verifyFormat( 4407 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4408 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4409 Style); 4410 verifyFormat( 4411 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n" 4412 " aaaaaaaaaaaaa);", 4413 Style); 4414 verifyFormat( 4415 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4416 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4417 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4418 " aaaaaaaaaaaaa);", 4419 Style); 4420 verifyFormat( 4421 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4422 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4423 " aaaaaaaaaaaaa);", 4424 Style); 4425 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4426 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4427 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4428 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4429 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4430 Style); 4431 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4432 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4433 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4434 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4435 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4436 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4437 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4438 Style); 4439 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4440 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n" 4441 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4442 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4443 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4444 Style); 4445 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4446 " aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4447 " aaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4448 Style); 4449 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 4450 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4451 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4452 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4453 Style); 4454 verifyFormat( 4455 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4456 " aaaaaaaaaaaaaaa :\n" 4457 " aaaaaaaaaaaaaaa;", 4458 Style); 4459 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 4460 " aaaaaaaaa ?\n" 4461 " b :\n" 4462 " c);", 4463 Style); 4464 verifyFormat( 4465 "unsigned Indent =\n" 4466 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0 ?\n" 4467 " IndentForLevel[TheLine.Level] :\n" 4468 " TheLine * 2,\n" 4469 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4470 Style); 4471 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4472 " aaaaaaaaaaaaaaa :\n" 4473 " bbbbbbbbbbbbbbb ? //\n" 4474 " ccccccccccccccc :\n" 4475 " ddddddddddddddd;", 4476 Style); 4477 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4478 " aaaaaaaaaaaaaaa :\n" 4479 " (bbbbbbbbbbbbbbb ? //\n" 4480 " ccccccccccccccc :\n" 4481 " ddddddddddddddd);", 4482 Style); 4483 } 4484 4485 TEST_F(FormatTest, DeclarationsOfMultipleVariables) { 4486 verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n" 4487 " aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();"); 4488 verifyFormat("bool a = true, b = false;"); 4489 4490 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4491 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n" 4492 " bbbbbbbbbbbbbbbbbbbbbbbbb =\n" 4493 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);"); 4494 verifyFormat( 4495 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 4496 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n" 4497 " d = e && f;"); 4498 verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n" 4499 " c = cccccccccccccccccccc, d = dddddddddddddddddddd;"); 4500 verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" 4501 " *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;"); 4502 verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n" 4503 " ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;"); 4504 4505 FormatStyle Style = getGoogleStyle(); 4506 Style.PointerAlignment = FormatStyle::PAS_Left; 4507 Style.DerivePointerAlignment = false; 4508 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4509 " *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n" 4510 " *b = bbbbbbbbbbbbbbbbbbb;", 4511 Style); 4512 verifyFormat( 4513 "aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" 4514 " *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;", 4515 Style); 4516 } 4517 4518 TEST_F(FormatTest, ConditionalExpressionsInBrackets) { 4519 verifyFormat("arr[foo ? bar : baz];"); 4520 verifyFormat("f()[foo ? bar : baz];"); 4521 verifyFormat("(a + b)[foo ? bar : baz];"); 4522 verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];"); 4523 } 4524 4525 TEST_F(FormatTest, AlignsStringLiterals) { 4526 verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n" 4527 " \"short literal\");"); 4528 verifyFormat( 4529 "looooooooooooooooooooooooongFunction(\n" 4530 " \"short literal\"\n" 4531 " \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");"); 4532 verifyFormat("someFunction(\"Always break between multi-line\"\n" 4533 " \" string literals\",\n" 4534 " and, other, parameters);"); 4535 EXPECT_EQ("fun + \"1243\" /* comment */\n" 4536 " \"5678\";", 4537 format("fun + \"1243\" /* comment */\n" 4538 " \"5678\";", 4539 getLLVMStyleWithColumns(28))); 4540 EXPECT_EQ( 4541 "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 4542 " \"aaaaaaaaaaaaaaaaaaaaa\"\n" 4543 " \"aaaaaaaaaaaaaaaa\";", 4544 format("aaaaaa =" 4545 "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa " 4546 "aaaaaaaaaaaaaaaaaaaaa\" " 4547 "\"aaaaaaaaaaaaaaaa\";")); 4548 verifyFormat("a = a + \"a\"\n" 4549 " \"a\"\n" 4550 " \"a\";"); 4551 verifyFormat("f(\"a\", \"b\"\n" 4552 " \"c\");"); 4553 4554 verifyFormat( 4555 "#define LL_FORMAT \"ll\"\n" 4556 "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n" 4557 " \"d, ddddddddd: %\" LL_FORMAT \"d\");"); 4558 4559 verifyFormat("#define A(X) \\\n" 4560 " \"aaaaa\" #X \"bbbbbb\" \\\n" 4561 " \"ccccc\"", 4562 getLLVMStyleWithColumns(23)); 4563 verifyFormat("#define A \"def\"\n" 4564 "f(\"abc\" A \"ghi\"\n" 4565 " \"jkl\");"); 4566 4567 verifyFormat("f(L\"a\"\n" 4568 " L\"b\")"); 4569 verifyFormat("#define A(X) \\\n" 4570 " L\"aaaaa\" #X L\"bbbbbb\" \\\n" 4571 " L\"ccccc\"", 4572 getLLVMStyleWithColumns(25)); 4573 } 4574 4575 TEST_F(FormatTest, AlwaysBreakAfterDefinitionReturnType) { 4576 FormatStyle AfterType = getLLVMStyle(); 4577 AfterType.AlwaysBreakAfterDefinitionReturnType = true; 4578 verifyFormat("const char *\n" 4579 "f(void) {\n" // Break here. 4580 " return \"\";\n" 4581 "}\n" 4582 "const char *bar(void);\n", // No break here. 4583 AfterType); 4584 verifyFormat("template <class T>\n" 4585 "T *\n" 4586 "f(T &c) {\n" // Break here. 4587 " return NULL;\n" 4588 "}\n" 4589 "template <class T> T *f(T &c);\n", // No break here. 4590 AfterType); 4591 AfterType.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 4592 verifyFormat("const char *\n" 4593 "f(void)\n" // Break here. 4594 "{\n" 4595 " return \"\";\n" 4596 "}\n" 4597 "const char *bar(void);\n", // No break here. 4598 AfterType); 4599 verifyFormat("template <class T>\n" 4600 "T *\n" // Problem here: no line break 4601 "f(T &c)\n" // Break here. 4602 "{\n" 4603 " return NULL;\n" 4604 "}\n" 4605 "template <class T> T *f(T &c);\n", // No break here. 4606 AfterType); 4607 } 4608 4609 TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) { 4610 FormatStyle NoBreak = getLLVMStyle(); 4611 NoBreak.AlwaysBreakBeforeMultilineStrings = false; 4612 FormatStyle Break = getLLVMStyle(); 4613 Break.AlwaysBreakBeforeMultilineStrings = true; 4614 verifyFormat("aaaa = \"bbbb\"\n" 4615 " \"cccc\";", 4616 NoBreak); 4617 verifyFormat("aaaa =\n" 4618 " \"bbbb\"\n" 4619 " \"cccc\";", 4620 Break); 4621 verifyFormat("aaaa(\"bbbb\"\n" 4622 " \"cccc\");", 4623 NoBreak); 4624 verifyFormat("aaaa(\n" 4625 " \"bbbb\"\n" 4626 " \"cccc\");", 4627 Break); 4628 verifyFormat("aaaa(qqq, \"bbbb\"\n" 4629 " \"cccc\");", 4630 NoBreak); 4631 verifyFormat("aaaa(qqq,\n" 4632 " \"bbbb\"\n" 4633 " \"cccc\");", 4634 Break); 4635 verifyFormat("aaaa(qqq,\n" 4636 " L\"bbbb\"\n" 4637 " L\"cccc\");", 4638 Break); 4639 4640 // As we break before unary operators, breaking right after them is bad. 4641 verifyFormat("string foo = abc ? \"x\"\n" 4642 " \"blah blah blah blah blah blah\"\n" 4643 " : \"y\";", 4644 Break); 4645 4646 // Don't break if there is no column gain. 4647 verifyFormat("f(\"aaaa\"\n" 4648 " \"bbbb\");", 4649 Break); 4650 4651 // Treat literals with escaped newlines like multi-line string literals. 4652 EXPECT_EQ("x = \"a\\\n" 4653 "b\\\n" 4654 "c\";", 4655 format("x = \"a\\\n" 4656 "b\\\n" 4657 "c\";", 4658 NoBreak)); 4659 EXPECT_EQ("x =\n" 4660 " \"a\\\n" 4661 "b\\\n" 4662 "c\";", 4663 format("x = \"a\\\n" 4664 "b\\\n" 4665 "c\";", 4666 Break)); 4667 4668 // Exempt ObjC strings for now. 4669 EXPECT_EQ("NSString *const kString = @\"aaaa\"\n" 4670 " \"bbbb\";", 4671 format("NSString *const kString = @\"aaaa\"\n" 4672 "\"bbbb\";", 4673 Break)); 4674 4675 Break.ColumnLimit = 0; 4676 verifyFormat("const char *hello = \"hello llvm\";", Break); 4677 } 4678 4679 TEST_F(FormatTest, AlignsPipes) { 4680 verifyFormat( 4681 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4682 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4683 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4684 verifyFormat( 4685 "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n" 4686 " << aaaaaaaaaaaaaaaaaaaa;"); 4687 verifyFormat( 4688 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4689 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4690 verifyFormat( 4691 "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n" 4692 " \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n" 4693 " << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";"); 4694 verifyFormat( 4695 "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4696 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4697 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4698 verifyFormat( 4699 "llvm::errs() << \"a: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4700 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4701 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4702 verifyFormat( 4703 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4704 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4705 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4706 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 4707 verifyFormat( 4708 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4709 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4710 4711 verifyFormat("return out << \"somepacket = {\\n\"\n" 4712 " << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n" 4713 " << \" bbbb = \" << pkt.bbbb << \"\\n\"\n" 4714 " << \" cccccc = \" << pkt.cccccc << \"\\n\"\n" 4715 " << \" ddd = [\" << pkt.ddd << \"]\\n\"\n" 4716 " << \"}\";"); 4717 4718 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 4719 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 4720 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;"); 4721 verifyFormat( 4722 "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n" 4723 " << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n" 4724 " << \"ccccccccccccccccc = \" << ccccccccccccccccc\n" 4725 " << \"ddddddddddddddddd = \" << ddddddddddddddddd\n" 4726 " << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;"); 4727 verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n" 4728 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 4729 verifyFormat( 4730 "void f() {\n" 4731 " llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n" 4732 " << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 4733 "}"); 4734 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n" 4735 " << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();"); 4736 4737 // Breaking before the first "<<" is generally not desirable. 4738 verifyFormat( 4739 "llvm::errs()\n" 4740 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4741 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4742 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4743 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4744 getLLVMStyleWithColumns(70)); 4745 verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4746 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4747 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4748 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4749 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4750 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4751 getLLVMStyleWithColumns(70)); 4752 4753 // But sometimes, breaking before the first "<<" is desirable. 4754 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n" 4755 " << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);"); 4756 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n" 4757 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4758 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4759 verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n" 4760 " << BEF << IsTemplate << Description << E->getType();"); 4761 4762 verifyFormat( 4763 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4764 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4765 4766 // Incomplete string literal. 4767 EXPECT_EQ("llvm::errs() << \"\n" 4768 " << a;", 4769 format("llvm::errs() << \"\n<<a;")); 4770 4771 verifyFormat("void f() {\n" 4772 " CHECK_EQ(aaaa, (*bbbbbbbbb)->cccccc)\n" 4773 " << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n" 4774 "}"); 4775 4776 // Handle 'endl'. 4777 verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << endl\n" 4778 " << bbbbbbbbbbbbbbbbbbbbbb << endl;"); 4779 verifyFormat("llvm::errs() << endl << bbbbbbbbbbbbbbbbbbbbbb << endl;"); 4780 } 4781 4782 TEST_F(FormatTest, UnderstandsEquals) { 4783 verifyFormat( 4784 "aaaaaaaaaaaaaaaaa =\n" 4785 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4786 verifyFormat( 4787 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4788 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 4789 verifyFormat( 4790 "if (a) {\n" 4791 " f();\n" 4792 "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4793 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 4794 "}"); 4795 4796 verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4797 " 100000000 + 10000000) {\n}"); 4798 } 4799 4800 TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) { 4801 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 4802 " .looooooooooooooooooooooooooooooooooooooongFunction();"); 4803 4804 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 4805 " ->looooooooooooooooooooooooooooooooooooooongFunction();"); 4806 4807 verifyFormat( 4808 "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n" 4809 " Parameter2);"); 4810 4811 verifyFormat( 4812 "ShortObject->shortFunction(\n" 4813 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n" 4814 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);"); 4815 4816 verifyFormat("loooooooooooooongFunction(\n" 4817 " LoooooooooooooongObject->looooooooooooooooongFunction());"); 4818 4819 verifyFormat( 4820 "function(LoooooooooooooooooooooooooooooooooooongObject\n" 4821 " ->loooooooooooooooooooooooooooooooooooooooongFunction());"); 4822 4823 verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 4824 " .WillRepeatedly(Return(SomeValue));"); 4825 verifyFormat("void f() {\n" 4826 " EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 4827 " .Times(2)\n" 4828 " .WillRepeatedly(Return(SomeValue));\n" 4829 "}"); 4830 verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n" 4831 " ccccccccccccccccccccccc);"); 4832 verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4833 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa).aaaaa(aaaaa),\n" 4834 " aaaaaaaaaaaaaaaaaaaaa);"); 4835 verifyFormat("void f() {\n" 4836 " aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4837 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n" 4838 "}"); 4839 verifyFormat( 4840 "aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4841 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4842 " .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4843 " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4844 " aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 4845 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4846 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4847 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4848 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n" 4849 "}"); 4850 4851 // Here, it is not necessary to wrap at "." or "->". 4852 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n" 4853 " aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 4854 verifyFormat( 4855 "aaaaaaaaaaa->aaaaaaaaa(\n" 4856 " aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4857 " aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n"); 4858 4859 verifyFormat( 4860 "aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4861 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());"); 4862 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n" 4863 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 4864 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n" 4865 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 4866 4867 // FIXME: Should we break before .a()? 4868 verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4869 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa).a();"); 4870 4871 FormatStyle NoBinPacking = getLLVMStyle(); 4872 NoBinPacking.BinPackParameters = false; 4873 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 4874 " .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 4875 " .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n" 4876 " aaaaaaaaaaaaaaaaaaa,\n" 4877 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4878 NoBinPacking); 4879 4880 // If there is a subsequent call, change to hanging indentation. 4881 verifyFormat( 4882 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4883 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n" 4884 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4885 verifyFormat( 4886 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4887 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));"); 4888 verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4889 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4890 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4891 verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4892 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4893 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 4894 } 4895 4896 TEST_F(FormatTest, WrapsTemplateDeclarations) { 4897 verifyFormat("template <typename T>\n" 4898 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 4899 verifyFormat("template <typename T>\n" 4900 "// T should be one of {A, B}.\n" 4901 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 4902 verifyFormat( 4903 "template <typename T>\n" 4904 "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;"); 4905 verifyFormat("template <typename T>\n" 4906 "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n" 4907 " int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);"); 4908 verifyFormat( 4909 "template <typename T>\n" 4910 "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n" 4911 " int Paaaaaaaaaaaaaaaaaaaaram2);"); 4912 verifyFormat( 4913 "template <typename T>\n" 4914 "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n" 4915 " aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n" 4916 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4917 verifyFormat("template <typename T>\n" 4918 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4919 " int aaaaaaaaaaaaaaaaaaaaaa);"); 4920 verifyFormat( 4921 "template <typename T1, typename T2 = char, typename T3 = char,\n" 4922 " typename T4 = char>\n" 4923 "void f();"); 4924 verifyFormat("template <typename aaaaaaaaaaa, typename bbbbbbbbbbbbb,\n" 4925 " template <typename> class cccccccccccccccccccccc,\n" 4926 " typename ddddddddddddd>\n" 4927 "class C {};"); 4928 verifyFormat( 4929 "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n" 4930 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4931 4932 verifyFormat("void f() {\n" 4933 " a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n" 4934 " a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n" 4935 "}"); 4936 4937 verifyFormat("template <typename T> class C {};"); 4938 verifyFormat("template <typename T> void f();"); 4939 verifyFormat("template <typename T> void f() {}"); 4940 verifyFormat( 4941 "aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 4942 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4943 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n" 4944 " new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 4945 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4946 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n" 4947 " bbbbbbbbbbbbbbbbbbbbbbbb);", 4948 getLLVMStyleWithColumns(72)); 4949 EXPECT_EQ("static_cast<A< //\n" 4950 " B> *>(\n" 4951 "\n" 4952 " );", 4953 format("static_cast<A<//\n" 4954 " B>*>(\n" 4955 "\n" 4956 " );")); 4957 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4958 " const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);"); 4959 4960 FormatStyle AlwaysBreak = getLLVMStyle(); 4961 AlwaysBreak.AlwaysBreakTemplateDeclarations = true; 4962 verifyFormat("template <typename T>\nclass C {};", AlwaysBreak); 4963 verifyFormat("template <typename T>\nvoid f();", AlwaysBreak); 4964 verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak); 4965 verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4966 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n" 4967 " ccccccccccccccccccccccccccccccccccccccccccccccc);"); 4968 verifyFormat("template <template <typename> class Fooooooo,\n" 4969 " template <typename> class Baaaaaaar>\n" 4970 "struct C {};", 4971 AlwaysBreak); 4972 verifyFormat("template <typename T> // T can be A, B or C.\n" 4973 "struct C {};", 4974 AlwaysBreak); 4975 } 4976 4977 TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) { 4978 verifyFormat( 4979 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4980 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4981 verifyFormat( 4982 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4983 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4984 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 4985 4986 // FIXME: Should we have the extra indent after the second break? 4987 verifyFormat( 4988 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4989 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 4990 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4991 4992 verifyFormat( 4993 "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n" 4994 " cccccccccccccccccccccccccccccccccccccccccccccc());"); 4995 4996 // Breaking at nested name specifiers is generally not desirable. 4997 verifyFormat( 4998 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4999 " aaaaaaaaaaaaaaaaaaaaaaa);"); 5000 5001 verifyFormat( 5002 "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5003 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5004 " aaaaaaaaaaaaaaaaaaaaa);", 5005 getLLVMStyleWithColumns(74)); 5006 5007 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5008 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5009 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5010 } 5011 5012 TEST_F(FormatTest, UnderstandsTemplateParameters) { 5013 verifyFormat("A<int> a;"); 5014 verifyFormat("A<A<A<int>>> a;"); 5015 verifyFormat("A<A<A<int, 2>, 3>, 4> a;"); 5016 verifyFormat("bool x = a < 1 || 2 > a;"); 5017 verifyFormat("bool x = 5 < f<int>();"); 5018 verifyFormat("bool x = f<int>() > 5;"); 5019 verifyFormat("bool x = 5 < a<int>::x;"); 5020 verifyFormat("bool x = a < 4 ? a > 2 : false;"); 5021 verifyFormat("bool x = f() ? a < 2 : a > 2;"); 5022 5023 verifyGoogleFormat("A<A<int>> a;"); 5024 verifyGoogleFormat("A<A<A<int>>> a;"); 5025 verifyGoogleFormat("A<A<A<A<int>>>> a;"); 5026 verifyGoogleFormat("A<A<int> > a;"); 5027 verifyGoogleFormat("A<A<A<int> > > a;"); 5028 verifyGoogleFormat("A<A<A<A<int> > > > a;"); 5029 verifyGoogleFormat("A<::A<int>> a;"); 5030 verifyGoogleFormat("A<::A> a;"); 5031 verifyGoogleFormat("A< ::A> a;"); 5032 verifyGoogleFormat("A< ::A<int> > a;"); 5033 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle())); 5034 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle())); 5035 EXPECT_EQ("A<::A<int>> a;", format("A< ::A<int>> a;", getGoogleStyle())); 5036 EXPECT_EQ("A<::A<int>> a;", format("A<::A<int> > a;", getGoogleStyle())); 5037 5038 verifyFormat("A<A>> a;", getChromiumStyle(FormatStyle::LK_Cpp)); 5039 5040 verifyFormat("test >> a >> b;"); 5041 verifyFormat("test << a >> b;"); 5042 5043 verifyFormat("f<int>();"); 5044 verifyFormat("template <typename T> void f() {}"); 5045 verifyFormat("struct A<std::enable_if<sizeof(T2) < sizeof(int32)>::type>;"); 5046 5047 // Not template parameters. 5048 verifyFormat("return a < b && c > d;"); 5049 verifyFormat("void f() {\n" 5050 " while (a < b && c > d) {\n" 5051 " }\n" 5052 "}"); 5053 verifyFormat("template <typename... Types>\n" 5054 "typename enable_if<0 < sizeof...(Types)>::type Foo() {}"); 5055 5056 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5057 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaa);", 5058 getLLVMStyleWithColumns(60)); 5059 verifyFormat("static_assert(is_convertible<A &&, B>::value, \"AAA\");"); 5060 verifyFormat("Constructor(A... a) : a_(X<A>{std::forward<A>(a)}...) {}"); 5061 } 5062 5063 TEST_F(FormatTest, UnderstandsBinaryOperators) { 5064 verifyFormat("COMPARE(a, ==, b);"); 5065 } 5066 5067 TEST_F(FormatTest, UnderstandsPointersToMembers) { 5068 verifyFormat("int A::*x;"); 5069 verifyFormat("int (S::*func)(void *);"); 5070 verifyFormat("void f() { int (S::*func)(void *); }"); 5071 verifyFormat("typedef bool *(Class::*Member)() const;"); 5072 verifyFormat("void f() {\n" 5073 " (a->*f)();\n" 5074 " a->*x;\n" 5075 " (a.*f)();\n" 5076 " ((*a).*f)();\n" 5077 " a.*x;\n" 5078 "}"); 5079 verifyFormat("void f() {\n" 5080 " (a->*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 5081 " aaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);\n" 5082 "}"); 5083 verifyFormat( 5084 "(aaaaaaaaaa->*bbbbbbb)(\n" 5085 " aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 5086 FormatStyle Style = getLLVMStyle(); 5087 Style.PointerAlignment = FormatStyle::PAS_Left; 5088 verifyFormat("typedef bool* (Class::*Member)() const;", Style); 5089 } 5090 5091 TEST_F(FormatTest, UnderstandsUnaryOperators) { 5092 verifyFormat("int a = -2;"); 5093 verifyFormat("f(-1, -2, -3);"); 5094 verifyFormat("a[-1] = 5;"); 5095 verifyFormat("int a = 5 + -2;"); 5096 verifyFormat("if (i == -1) {\n}"); 5097 verifyFormat("if (i != -1) {\n}"); 5098 verifyFormat("if (i > -1) {\n}"); 5099 verifyFormat("if (i < -1) {\n}"); 5100 verifyFormat("++(a->f());"); 5101 verifyFormat("--(a->f());"); 5102 verifyFormat("(a->f())++;"); 5103 verifyFormat("a[42]++;"); 5104 verifyFormat("if (!(a->f())) {\n}"); 5105 5106 verifyFormat("a-- > b;"); 5107 verifyFormat("b ? -a : c;"); 5108 verifyFormat("n * sizeof char16;"); 5109 verifyFormat("n * alignof char16;", getGoogleStyle()); 5110 verifyFormat("sizeof(char);"); 5111 verifyFormat("alignof(char);", getGoogleStyle()); 5112 5113 verifyFormat("return -1;"); 5114 verifyFormat("switch (a) {\n" 5115 "case -1:\n" 5116 " break;\n" 5117 "}"); 5118 verifyFormat("#define X -1"); 5119 verifyFormat("#define X -kConstant"); 5120 5121 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {-5, +3};"); 5122 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {+5, -3};"); 5123 5124 verifyFormat("int a = /* confusing comment */ -1;"); 5125 // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case. 5126 verifyFormat("int a = i /* confusing comment */++;"); 5127 } 5128 5129 TEST_F(FormatTest, DoesNotIndentRelativeToUnaryOperators) { 5130 verifyFormat("if (!aaaaaaaaaa( // break\n" 5131 " aaaaa)) {\n" 5132 "}"); 5133 verifyFormat("aaaaaaaaaa(!aaaaaaaaaa( // break\n" 5134 " aaaaa));"); 5135 verifyFormat("*aaa = aaaaaaa( // break\n" 5136 " bbbbbb);"); 5137 } 5138 5139 TEST_F(FormatTest, UnderstandsOverloadedOperators) { 5140 verifyFormat("bool operator<();"); 5141 verifyFormat("bool operator>();"); 5142 verifyFormat("bool operator=();"); 5143 verifyFormat("bool operator==();"); 5144 verifyFormat("bool operator!=();"); 5145 verifyFormat("int operator+();"); 5146 verifyFormat("int operator++();"); 5147 verifyFormat("bool operator();"); 5148 verifyFormat("bool operator()();"); 5149 verifyFormat("bool operator[]();"); 5150 verifyFormat("operator bool();"); 5151 verifyFormat("operator int();"); 5152 verifyFormat("operator void *();"); 5153 verifyFormat("operator SomeType<int>();"); 5154 verifyFormat("operator SomeType<int, int>();"); 5155 verifyFormat("operator SomeType<SomeType<int>>();"); 5156 verifyFormat("void *operator new(std::size_t size);"); 5157 verifyFormat("void *operator new[](std::size_t size);"); 5158 verifyFormat("void operator delete(void *ptr);"); 5159 verifyFormat("void operator delete[](void *ptr);"); 5160 verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n" 5161 "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);"); 5162 5163 verifyFormat( 5164 "ostream &operator<<(ostream &OutputStream,\n" 5165 " SomeReallyLongType WithSomeReallyLongValue);"); 5166 verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n" 5167 " const aaaaaaaaaaaaaaaaaaaaa &right) {\n" 5168 " return left.group < right.group;\n" 5169 "}"); 5170 verifyFormat("SomeType &operator=(const SomeType &S);"); 5171 verifyFormat("f.template operator()<int>();"); 5172 5173 verifyGoogleFormat("operator void*();"); 5174 verifyGoogleFormat("operator SomeType<SomeType<int>>();"); 5175 verifyGoogleFormat("operator ::A();"); 5176 5177 verifyFormat("using A::operator+;"); 5178 5179 verifyFormat("string // break\n" 5180 "operator()() & {}"); 5181 verifyFormat("string // break\n" 5182 "operator()() && {}"); 5183 } 5184 5185 TEST_F(FormatTest, UnderstandsFunctionRefQualification) { 5186 verifyFormat("Deleted &operator=(const Deleted &)& = default;"); 5187 verifyFormat("Deleted &operator=(const Deleted &)&& = delete;"); 5188 verifyFormat("SomeType MemberFunction(const Deleted &)& = delete;"); 5189 verifyFormat("SomeType MemberFunction(const Deleted &)&& = delete;"); 5190 verifyFormat("Deleted &operator=(const Deleted &)&;"); 5191 verifyFormat("Deleted &operator=(const Deleted &)&&;"); 5192 verifyFormat("SomeType MemberFunction(const Deleted &)&;"); 5193 verifyFormat("SomeType MemberFunction(const Deleted &)&&;"); 5194 5195 verifyGoogleFormat("Deleted& operator=(const Deleted&)& = default;"); 5196 verifyGoogleFormat("SomeType MemberFunction(const Deleted&)& = delete;"); 5197 verifyGoogleFormat("Deleted& operator=(const Deleted&)&;"); 5198 verifyGoogleFormat("SomeType MemberFunction(const Deleted&)&;"); 5199 5200 FormatStyle Spaces = getLLVMStyle(); 5201 Spaces.SpacesInCStyleCastParentheses = true; 5202 verifyFormat("Deleted &operator=(const Deleted &)& = default;", Spaces); 5203 verifyFormat("SomeType MemberFunction(const Deleted &)& = delete;", Spaces); 5204 verifyFormat("Deleted &operator=(const Deleted &)&;", Spaces); 5205 verifyFormat("SomeType MemberFunction(const Deleted &)&;", Spaces); 5206 5207 Spaces.SpacesInCStyleCastParentheses = false; 5208 Spaces.SpacesInParentheses = true; 5209 verifyFormat("Deleted &operator=( const Deleted & )& = default;", Spaces); 5210 verifyFormat("SomeType MemberFunction( const Deleted & )& = delete;", Spaces); 5211 verifyFormat("Deleted &operator=( const Deleted & )&;", Spaces); 5212 verifyFormat("SomeType MemberFunction( const Deleted & )&;", Spaces); 5213 } 5214 5215 TEST_F(FormatTest, UnderstandsNewAndDelete) { 5216 verifyFormat("void f() {\n" 5217 " A *a = new A;\n" 5218 " A *a = new (placement) A;\n" 5219 " delete a;\n" 5220 " delete (A *)a;\n" 5221 "}"); 5222 verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 5223 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 5224 verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5225 " new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 5226 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 5227 verifyFormat("delete[] h->p;"); 5228 } 5229 5230 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) { 5231 verifyFormat("int *f(int *a) {}"); 5232 verifyFormat("int main(int argc, char **argv) {}"); 5233 verifyFormat("Test::Test(int b) : a(b * b) {}"); 5234 verifyIndependentOfContext("f(a, *a);"); 5235 verifyFormat("void g() { f(*a); }"); 5236 verifyIndependentOfContext("int a = b * 10;"); 5237 verifyIndependentOfContext("int a = 10 * b;"); 5238 verifyIndependentOfContext("int a = b * c;"); 5239 verifyIndependentOfContext("int a += b * c;"); 5240 verifyIndependentOfContext("int a -= b * c;"); 5241 verifyIndependentOfContext("int a *= b * c;"); 5242 verifyIndependentOfContext("int a /= b * c;"); 5243 verifyIndependentOfContext("int a = *b;"); 5244 verifyIndependentOfContext("int a = *b * c;"); 5245 verifyIndependentOfContext("int a = b * *c;"); 5246 verifyIndependentOfContext("return 10 * b;"); 5247 verifyIndependentOfContext("return *b * *c;"); 5248 verifyIndependentOfContext("return a & ~b;"); 5249 verifyIndependentOfContext("f(b ? *c : *d);"); 5250 verifyIndependentOfContext("int a = b ? *c : *d;"); 5251 verifyIndependentOfContext("*b = a;"); 5252 verifyIndependentOfContext("a * ~b;"); 5253 verifyIndependentOfContext("a * !b;"); 5254 verifyIndependentOfContext("a * +b;"); 5255 verifyIndependentOfContext("a * -b;"); 5256 verifyIndependentOfContext("a * ++b;"); 5257 verifyIndependentOfContext("a * --b;"); 5258 verifyIndependentOfContext("a[4] * b;"); 5259 verifyIndependentOfContext("a[a * a] = 1;"); 5260 verifyIndependentOfContext("f() * b;"); 5261 verifyIndependentOfContext("a * [self dostuff];"); 5262 verifyIndependentOfContext("int x = a * (a + b);"); 5263 verifyIndependentOfContext("(a *)(a + b);"); 5264 verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;"); 5265 verifyIndependentOfContext("int *pa = (int *)&a;"); 5266 verifyIndependentOfContext("return sizeof(int **);"); 5267 verifyIndependentOfContext("return sizeof(int ******);"); 5268 verifyIndependentOfContext("return (int **&)a;"); 5269 verifyIndependentOfContext("f((*PointerToArray)[10]);"); 5270 verifyFormat("void f(Type (*parameter)[10]) {}"); 5271 verifyGoogleFormat("return sizeof(int**);"); 5272 verifyIndependentOfContext("Type **A = static_cast<Type **>(P);"); 5273 verifyGoogleFormat("Type** A = static_cast<Type**>(P);"); 5274 verifyFormat("auto a = [](int **&, int ***) {};"); 5275 verifyFormat("auto PointerBinding = [](const char *S) {};"); 5276 verifyFormat("typedef typeof(int(int, int)) *MyFunc;"); 5277 verifyFormat("[](const decltype(*a) &value) {}"); 5278 verifyIndependentOfContext("typedef void (*f)(int *a);"); 5279 verifyIndependentOfContext("int i{a * b};"); 5280 verifyIndependentOfContext("aaa && aaa->f();"); 5281 verifyIndependentOfContext("int x = ~*p;"); 5282 verifyFormat("Constructor() : a(a), area(width * height) {}"); 5283 verifyFormat("Constructor() : a(a), area(a, width * height) {}"); 5284 verifyFormat("void f() { f(a, c * d); }"); 5285 5286 verifyIndependentOfContext("InvalidRegions[*R] = 0;"); 5287 5288 verifyIndependentOfContext("A<int *> a;"); 5289 verifyIndependentOfContext("A<int **> a;"); 5290 verifyIndependentOfContext("A<int *, int *> a;"); 5291 verifyIndependentOfContext("A<int *[]> a;"); 5292 verifyIndependentOfContext( 5293 "const char *const p = reinterpret_cast<const char *const>(q);"); 5294 verifyIndependentOfContext("A<int **, int **> a;"); 5295 verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);"); 5296 verifyFormat("for (char **a = b; *a; ++a) {\n}"); 5297 verifyFormat("for (; a && b;) {\n}"); 5298 verifyFormat("bool foo = true && [] { return false; }();"); 5299 5300 verifyFormat( 5301 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5302 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5303 5304 verifyGoogleFormat("**outparam = 1;"); 5305 verifyGoogleFormat("*outparam = a * b;"); 5306 verifyGoogleFormat("int main(int argc, char** argv) {}"); 5307 verifyGoogleFormat("A<int*> a;"); 5308 verifyGoogleFormat("A<int**> a;"); 5309 verifyGoogleFormat("A<int*, int*> a;"); 5310 verifyGoogleFormat("A<int**, int**> a;"); 5311 verifyGoogleFormat("f(b ? *c : *d);"); 5312 verifyGoogleFormat("int a = b ? *c : *d;"); 5313 verifyGoogleFormat("Type* t = **x;"); 5314 verifyGoogleFormat("Type* t = *++*x;"); 5315 verifyGoogleFormat("*++*x;"); 5316 verifyGoogleFormat("Type* t = const_cast<T*>(&*x);"); 5317 verifyGoogleFormat("Type* t = x++ * y;"); 5318 verifyGoogleFormat( 5319 "const char* const p = reinterpret_cast<const char* const>(q);"); 5320 verifyGoogleFormat("void f(int i = 0, SomeType** temps = NULL);"); 5321 verifyGoogleFormat("void f(Bar* a = nullptr, Bar* b);"); 5322 verifyGoogleFormat("template <typename T>\n" 5323 "void f(int i = 0, SomeType** temps = NULL);"); 5324 5325 FormatStyle Left = getLLVMStyle(); 5326 Left.PointerAlignment = FormatStyle::PAS_Left; 5327 verifyFormat("x = *a(x) = *a(y);", Left); 5328 5329 verifyIndependentOfContext("a = *(x + y);"); 5330 verifyIndependentOfContext("a = &(x + y);"); 5331 verifyIndependentOfContext("*(x + y).call();"); 5332 verifyIndependentOfContext("&(x + y)->call();"); 5333 verifyFormat("void f() { &(*I).first; }"); 5334 5335 verifyIndependentOfContext("f(b * /* confusing comment */ ++c);"); 5336 verifyFormat( 5337 "int *MyValues = {\n" 5338 " *A, // Operator detection might be confused by the '{'\n" 5339 " *BB // Operator detection might be confused by previous comment\n" 5340 "};"); 5341 5342 verifyIndependentOfContext("if (int *a = &b)"); 5343 verifyIndependentOfContext("if (int &a = *b)"); 5344 verifyIndependentOfContext("if (a & b[i])"); 5345 verifyIndependentOfContext("if (a::b::c::d & b[i])"); 5346 verifyIndependentOfContext("if (*b[i])"); 5347 verifyIndependentOfContext("if (int *a = (&b))"); 5348 verifyIndependentOfContext("while (int *a = &b)"); 5349 verifyIndependentOfContext("size = sizeof *a;"); 5350 verifyFormat("void f() {\n" 5351 " for (const int &v : Values) {\n" 5352 " }\n" 5353 "}"); 5354 verifyFormat("for (int i = a * a; i < 10; ++i) {\n}"); 5355 verifyFormat("for (int i = 0; i < a * a; ++i) {\n}"); 5356 verifyGoogleFormat("for (int i = 0; i * 2 < z; i *= 2) {\n}"); 5357 5358 verifyFormat("#define A (!a * b)"); 5359 verifyFormat("#define MACRO \\\n" 5360 " int *i = a * b; \\\n" 5361 " void f(a *b);", 5362 getLLVMStyleWithColumns(19)); 5363 5364 verifyIndependentOfContext("A = new SomeType *[Length];"); 5365 verifyIndependentOfContext("A = new SomeType *[Length]();"); 5366 verifyIndependentOfContext("T **t = new T *;"); 5367 verifyIndependentOfContext("T **t = new T *();"); 5368 verifyGoogleFormat("A = new SomeType* [Length]();"); 5369 verifyGoogleFormat("A = new SomeType* [Length];"); 5370 verifyGoogleFormat("T** t = new T*;"); 5371 verifyGoogleFormat("T** t = new T*();"); 5372 5373 FormatStyle PointerLeft = getLLVMStyle(); 5374 PointerLeft.PointerAlignment = FormatStyle::PAS_Left; 5375 verifyFormat("delete *x;", PointerLeft); 5376 verifyFormat("STATIC_ASSERT((a & b) == 0);"); 5377 verifyFormat("STATIC_ASSERT(0 == (a & b));"); 5378 verifyFormat("template <bool a, bool b> " 5379 "typename t::if<x && y>::type f() {}"); 5380 verifyFormat("template <int *y> f() {}"); 5381 verifyFormat("vector<int *> v;"); 5382 verifyFormat("vector<int *const> v;"); 5383 verifyFormat("vector<int *const **const *> v;"); 5384 verifyFormat("vector<int *volatile> v;"); 5385 verifyFormat("vector<a * b> v;"); 5386 verifyFormat("foo<b && false>();"); 5387 verifyFormat("foo<b & 1>();"); 5388 verifyFormat("decltype(*::std::declval<const T &>()) void F();"); 5389 verifyFormat( 5390 "template <class T, class = typename std::enable_if<\n" 5391 " std::is_integral<T>::value &&\n" 5392 " (sizeof(T) > 1 || sizeof(T) < 8)>::type>\n" 5393 "void F();", 5394 getLLVMStyleWithColumns(76)); 5395 verifyFormat( 5396 "template <class T,\n" 5397 " class = typename ::std::enable_if<\n" 5398 " ::std::is_array<T>{} && ::std::is_array<T>{}>::type>\n" 5399 "void F();", 5400 getGoogleStyleWithColumns(68)); 5401 5402 verifyIndependentOfContext("MACRO(int *i);"); 5403 verifyIndependentOfContext("MACRO(auto *a);"); 5404 verifyIndependentOfContext("MACRO(const A *a);"); 5405 verifyIndependentOfContext("MACRO('0' <= c && c <= '9');"); 5406 // FIXME: Is there a way to make this work? 5407 // verifyIndependentOfContext("MACRO(A *a);"); 5408 5409 verifyFormat("DatumHandle const *operator->() const { return input_; }"); 5410 5411 EXPECT_EQ("#define OP(x) \\\n" 5412 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5413 " return s << a.DebugString(); \\\n" 5414 " }", 5415 format("#define OP(x) \\\n" 5416 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5417 " return s << a.DebugString(); \\\n" 5418 " }", 5419 getLLVMStyleWithColumns(50))); 5420 5421 // FIXME: We cannot handle this case yet; we might be able to figure out that 5422 // foo<x> d > v; doesn't make sense. 5423 verifyFormat("foo<a<b && c> d> v;"); 5424 5425 FormatStyle PointerMiddle = getLLVMStyle(); 5426 PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle; 5427 verifyFormat("delete *x;", PointerMiddle); 5428 verifyFormat("int * x;", PointerMiddle); 5429 verifyFormat("template <int * y> f() {}", PointerMiddle); 5430 verifyFormat("int * f(int * a) {}", PointerMiddle); 5431 verifyFormat("int main(int argc, char ** argv) {}", PointerMiddle); 5432 verifyFormat("Test::Test(int b) : a(b * b) {}", PointerMiddle); 5433 verifyFormat("A<int *> a;", PointerMiddle); 5434 verifyFormat("A<int **> a;", PointerMiddle); 5435 verifyFormat("A<int *, int *> a;", PointerMiddle); 5436 verifyFormat("A<int * []> a;", PointerMiddle); 5437 verifyFormat("A = new SomeType * [Length]();", PointerMiddle); 5438 verifyFormat("A = new SomeType * [Length];", PointerMiddle); 5439 verifyFormat("T ** t = new T *;", PointerMiddle); 5440 } 5441 5442 TEST_F(FormatTest, UnderstandsAttributes) { 5443 verifyFormat("SomeType s __attribute__((unused)) (InitValue);"); 5444 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((unused))\n" 5445 "aaaaaaaaaaaaaaaaaaaaaaa(int i);"); 5446 } 5447 5448 TEST_F(FormatTest, UnderstandsEllipsis) { 5449 verifyFormat("int printf(const char *fmt, ...);"); 5450 verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }"); 5451 verifyFormat("template <class... Ts> void Foo(Ts *... ts) {}"); 5452 5453 FormatStyle PointersLeft = getLLVMStyle(); 5454 PointersLeft.PointerAlignment = FormatStyle::PAS_Left; 5455 verifyFormat("template <class... Ts> void Foo(Ts*... ts) {}", PointersLeft); 5456 } 5457 5458 TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) { 5459 EXPECT_EQ("int *a;\n" 5460 "int *a;\n" 5461 "int *a;", 5462 format("int *a;\n" 5463 "int* a;\n" 5464 "int *a;", 5465 getGoogleStyle())); 5466 EXPECT_EQ("int* a;\n" 5467 "int* a;\n" 5468 "int* a;", 5469 format("int* a;\n" 5470 "int* a;\n" 5471 "int *a;", 5472 getGoogleStyle())); 5473 EXPECT_EQ("int *a;\n" 5474 "int *a;\n" 5475 "int *a;", 5476 format("int *a;\n" 5477 "int * a;\n" 5478 "int * a;", 5479 getGoogleStyle())); 5480 } 5481 5482 TEST_F(FormatTest, UnderstandsRvalueReferences) { 5483 verifyFormat("int f(int &&a) {}"); 5484 verifyFormat("int f(int a, char &&b) {}"); 5485 verifyFormat("void f() { int &&a = b; }"); 5486 verifyGoogleFormat("int f(int a, char&& b) {}"); 5487 verifyGoogleFormat("void f() { int&& a = b; }"); 5488 5489 verifyIndependentOfContext("A<int &&> a;"); 5490 verifyIndependentOfContext("A<int &&, int &&> a;"); 5491 verifyGoogleFormat("A<int&&> a;"); 5492 verifyGoogleFormat("A<int&&, int&&> a;"); 5493 5494 // Not rvalue references: 5495 verifyFormat("template <bool B, bool C> class A {\n" 5496 " static_assert(B && C, \"Something is wrong\");\n" 5497 "};"); 5498 verifyGoogleFormat("#define IF(a, b, c) if (a && (b == c))"); 5499 verifyGoogleFormat("#define WHILE(a, b, c) while (a && (b == c))"); 5500 verifyFormat("#define A(a, b) (a && b)"); 5501 } 5502 5503 TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) { 5504 verifyFormat("void f() {\n" 5505 " x[aaaaaaaaa -\n" 5506 " b] = 23;\n" 5507 "}", 5508 getLLVMStyleWithColumns(15)); 5509 } 5510 5511 TEST_F(FormatTest, FormatsCasts) { 5512 verifyFormat("Type *A = static_cast<Type *>(P);"); 5513 verifyFormat("Type *A = (Type *)P;"); 5514 verifyFormat("Type *A = (vector<Type *, int *>)P;"); 5515 verifyFormat("int a = (int)(2.0f);"); 5516 verifyFormat("int a = (int)2.0f;"); 5517 verifyFormat("x[(int32)y];"); 5518 verifyFormat("x = (int32)y;"); 5519 verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)"); 5520 verifyFormat("int a = (int)*b;"); 5521 verifyFormat("int a = (int)2.0f;"); 5522 verifyFormat("int a = (int)~0;"); 5523 verifyFormat("int a = (int)++a;"); 5524 verifyFormat("int a = (int)sizeof(int);"); 5525 verifyFormat("int a = (int)+2;"); 5526 verifyFormat("my_int a = (my_int)2.0f;"); 5527 verifyFormat("my_int a = (my_int)sizeof(int);"); 5528 verifyFormat("return (my_int)aaa;"); 5529 verifyFormat("#define x ((int)-1)"); 5530 verifyFormat("#define LENGTH(x, y) (x) - (y) + 1"); 5531 verifyFormat("#define p(q) ((int *)&q)"); 5532 verifyFormat("fn(a)(b) + 1;"); 5533 5534 verifyFormat("void f() { my_int a = (my_int)*b; }"); 5535 verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }"); 5536 verifyFormat("my_int a = (my_int)~0;"); 5537 verifyFormat("my_int a = (my_int)++a;"); 5538 verifyFormat("my_int a = (my_int)-2;"); 5539 verifyFormat("my_int a = (my_int)1;"); 5540 verifyFormat("my_int a = (my_int *)1;"); 5541 verifyFormat("my_int a = (const my_int)-1;"); 5542 verifyFormat("my_int a = (const my_int *)-1;"); 5543 verifyFormat("my_int a = (my_int)(my_int)-1;"); 5544 5545 // FIXME: single value wrapped with paren will be treated as cast. 5546 verifyFormat("void f(int i = (kValue)*kMask) {}"); 5547 5548 verifyFormat("{ (void)F; }"); 5549 5550 // Don't break after a cast's 5551 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5552 " (aaaaaaaaaaaaaaaaaaaaaaaaaa *)(aaaaaaaaaaaaaaaaaaaaaa +\n" 5553 " bbbbbbbbbbbbbbbbbbbbbb);"); 5554 5555 // These are not casts. 5556 verifyFormat("void f(int *) {}"); 5557 verifyFormat("f(foo)->b;"); 5558 verifyFormat("f(foo).b;"); 5559 verifyFormat("f(foo)(b);"); 5560 verifyFormat("f(foo)[b];"); 5561 verifyFormat("[](foo) { return 4; }(bar);"); 5562 verifyFormat("(*funptr)(foo)[4];"); 5563 verifyFormat("funptrs[4](foo)[4];"); 5564 verifyFormat("void f(int *);"); 5565 verifyFormat("void f(int *) = 0;"); 5566 verifyFormat("void f(SmallVector<int>) {}"); 5567 verifyFormat("void f(SmallVector<int>);"); 5568 verifyFormat("void f(SmallVector<int>) = 0;"); 5569 verifyFormat("void f(int i = (kA * kB) & kMask) {}"); 5570 verifyFormat("int a = sizeof(int) * b;"); 5571 verifyFormat("int a = alignof(int) * b;", getGoogleStyle()); 5572 verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;"); 5573 verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");"); 5574 verifyFormat("aaaaa &operator=(const aaaaa &) LLVM_DELETED_FUNCTION;"); 5575 5576 // These are not casts, but at some point were confused with casts. 5577 verifyFormat("virtual void foo(int *) override;"); 5578 verifyFormat("virtual void foo(char &) const;"); 5579 verifyFormat("virtual void foo(int *a, char *) const;"); 5580 verifyFormat("int a = sizeof(int *) + b;"); 5581 verifyFormat("int a = alignof(int *) + b;", getGoogleStyle()); 5582 5583 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n" 5584 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 5585 // FIXME: The indentation here is not ideal. 5586 verifyFormat( 5587 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5588 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)\n" 5589 " [dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];"); 5590 } 5591 5592 TEST_F(FormatTest, FormatsFunctionTypes) { 5593 verifyFormat("A<bool()> a;"); 5594 verifyFormat("A<SomeType()> a;"); 5595 verifyFormat("A<void (*)(int, std::string)> a;"); 5596 verifyFormat("A<void *(int)>;"); 5597 verifyFormat("void *(*a)(int *, SomeType *);"); 5598 verifyFormat("int (*func)(void *);"); 5599 verifyFormat("void f() { int (*func)(void *); }"); 5600 verifyFormat("template <class CallbackClass>\n" 5601 "using MyCallback = void (CallbackClass::*)(SomeObject *Data);"); 5602 5603 verifyGoogleFormat("A<void*(int*, SomeType*)>;"); 5604 verifyGoogleFormat("void* (*a)(int);"); 5605 verifyGoogleFormat( 5606 "template <class CallbackClass>\n" 5607 "using MyCallback = void (CallbackClass::*)(SomeObject* Data);"); 5608 5609 // Other constructs can look somewhat like function types: 5610 verifyFormat("A<sizeof(*x)> a;"); 5611 verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)"); 5612 verifyFormat("some_var = function(*some_pointer_var)[0];"); 5613 verifyFormat("void f() { function(*some_pointer_var)[0] = 10; }"); 5614 } 5615 5616 TEST_F(FormatTest, FormatsPointersToArrayTypes) { 5617 verifyFormat("A (*foo_)[6];"); 5618 verifyFormat("vector<int> (*foo_)[6];"); 5619 } 5620 5621 TEST_F(FormatTest, BreaksLongVariableDeclarations) { 5622 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5623 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 5624 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType const\n" 5625 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 5626 5627 // Different ways of ()-initializiation. 5628 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5629 " LoooooooooooooooooooooooooooooooooooooooongVariable(1);"); 5630 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5631 " LoooooooooooooooooooooooooooooooooooooooongVariable(a);"); 5632 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5633 " LoooooooooooooooooooooooooooooooooooooooongVariable({});"); 5634 } 5635 5636 TEST_F(FormatTest, BreaksLongDeclarations) { 5637 verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n" 5638 " AnotherNameForTheLongType;"); 5639 verifyFormat("typedef LongTemplateType<aaaaaaaaaaaaaaaaaaa()>\n" 5640 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5641 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5642 "LoooooooooooooooooooooooooooooooongFunctionDeclaration();"); 5643 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5644 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5645 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType MACRO\n" 5646 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5647 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 5648 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5649 verifyFormat("decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 5650 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5651 FormatStyle Indented = getLLVMStyle(); 5652 Indented.IndentWrappedFunctionNames = true; 5653 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5654 " LoooooooooooooooooooooooooooooooongFunctionDeclaration();", 5655 Indented); 5656 verifyFormat( 5657 "LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5658 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5659 Indented); 5660 verifyFormat( 5661 "LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 5662 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5663 Indented); 5664 verifyFormat( 5665 "decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 5666 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5667 Indented); 5668 5669 // FIXME: Without the comment, this breaks after "(". 5670 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType // break\n" 5671 " (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();", 5672 getGoogleStyle()); 5673 5674 verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n" 5675 " int LoooooooooooooooooooongParam2) {}"); 5676 verifyFormat( 5677 "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n" 5678 " SourceLocation L, IdentifierIn *II,\n" 5679 " Type *T) {}"); 5680 verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n" 5681 "ReallyReallyLongFunctionName(\n" 5682 " const std::string &SomeParameter,\n" 5683 " const SomeType<string, SomeOtherTemplateParameter> &\n" 5684 " ReallyReallyLongParameterName,\n" 5685 " const SomeType<string, SomeOtherTemplateParameter> &\n" 5686 " AnotherLongParameterName) {}"); 5687 verifyFormat("template <typename A>\n" 5688 "SomeLoooooooooooooooooooooongType<\n" 5689 " typename some_namespace::SomeOtherType<A>::Type>\n" 5690 "Function() {}"); 5691 5692 verifyGoogleFormat( 5693 "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n" 5694 " aaaaaaaaaaaaaaaaaaaaaaa;"); 5695 verifyGoogleFormat( 5696 "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n" 5697 " SourceLocation L) {}"); 5698 verifyGoogleFormat( 5699 "some_namespace::LongReturnType\n" 5700 "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n" 5701 " int first_long_parameter, int second_parameter) {}"); 5702 5703 verifyGoogleFormat("template <typename T>\n" 5704 "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n" 5705 "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}"); 5706 verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5707 " int aaaaaaaaaaaaaaaaaaaaaaa);"); 5708 5709 verifyFormat("typedef size_t (*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 5710 " const aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 5711 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5712 } 5713 5714 TEST_F(FormatTest, FormatsArrays) { 5715 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5716 " [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;"); 5717 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5718 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 5719 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5720 " [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;"); 5721 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5722 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5723 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 5724 verifyFormat( 5725 "llvm::outs() << \"aaaaaaaaaaaa: \"\n" 5726 " << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5727 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];"); 5728 5729 verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n" 5730 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];"); 5731 verifyFormat( 5732 "aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n" 5733 " .aaaaaaa[0]\n" 5734 " .aaaaaaaaaaaaaaaaaaaaaa();"); 5735 5736 verifyNoCrash("a[,Y?)]", getLLVMStyleWithColumns(10)); 5737 } 5738 5739 TEST_F(FormatTest, LineStartsWithSpecialCharacter) { 5740 verifyFormat("(a)->b();"); 5741 verifyFormat("--a;"); 5742 } 5743 5744 TEST_F(FormatTest, HandlesIncludeDirectives) { 5745 verifyFormat("#include <string>\n" 5746 "#include <a/b/c.h>\n" 5747 "#include \"a/b/string\"\n" 5748 "#include \"string.h\"\n" 5749 "#include \"string.h\"\n" 5750 "#include <a-a>\n" 5751 "#include < path with space >\n" 5752 "#include \"abc.h\" // this is included for ABC\n" 5753 "#include \"some long include\" // with a comment\n" 5754 "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"", 5755 getLLVMStyleWithColumns(35)); 5756 EXPECT_EQ("#include \"a.h\"", format("#include \"a.h\"")); 5757 EXPECT_EQ("#include <a>", format("#include<a>")); 5758 5759 verifyFormat("#import <string>"); 5760 verifyFormat("#import <a/b/c.h>"); 5761 verifyFormat("#import \"a/b/string\""); 5762 verifyFormat("#import \"string.h\""); 5763 verifyFormat("#import \"string.h\""); 5764 verifyFormat("#if __has_include(<strstream>)\n" 5765 "#include <strstream>\n" 5766 "#endif"); 5767 5768 verifyFormat("#define MY_IMPORT <a/b>"); 5769 5770 // Protocol buffer definition or missing "#". 5771 verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";", 5772 getLLVMStyleWithColumns(30)); 5773 5774 FormatStyle Style = getLLVMStyle(); 5775 Style.AlwaysBreakBeforeMultilineStrings = true; 5776 Style.ColumnLimit = 0; 5777 verifyFormat("#import \"abc.h\"", Style); 5778 5779 // But 'import' might also be a regular C++ namespace. 5780 verifyFormat("import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5781 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5782 } 5783 5784 //===----------------------------------------------------------------------===// 5785 // Error recovery tests. 5786 //===----------------------------------------------------------------------===// 5787 5788 TEST_F(FormatTest, IncompleteParameterLists) { 5789 FormatStyle NoBinPacking = getLLVMStyle(); 5790 NoBinPacking.BinPackParameters = false; 5791 verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n" 5792 " double *min_x,\n" 5793 " double *max_x,\n" 5794 " double *min_y,\n" 5795 " double *max_y,\n" 5796 " double *min_z,\n" 5797 " double *max_z, ) {}", 5798 NoBinPacking); 5799 } 5800 5801 TEST_F(FormatTest, IncorrectCodeTrailingStuff) { 5802 verifyFormat("void f() { return; }\n42"); 5803 verifyFormat("void f() {\n" 5804 " if (0)\n" 5805 " return;\n" 5806 "}\n" 5807 "42"); 5808 verifyFormat("void f() { return }\n42"); 5809 verifyFormat("void f() {\n" 5810 " if (0)\n" 5811 " return\n" 5812 "}\n" 5813 "42"); 5814 } 5815 5816 TEST_F(FormatTest, IncorrectCodeMissingSemicolon) { 5817 EXPECT_EQ("void f() { return }", format("void f ( ) { return }")); 5818 EXPECT_EQ("void f() {\n" 5819 " if (a)\n" 5820 " return\n" 5821 "}", 5822 format("void f ( ) { if ( a ) return }")); 5823 EXPECT_EQ("namespace N {\n" 5824 "void f()\n" 5825 "}", 5826 format("namespace N { void f() }")); 5827 EXPECT_EQ("namespace N {\n" 5828 "void f() {}\n" 5829 "void g()\n" 5830 "}", 5831 format("namespace N { void f( ) { } void g( ) }")); 5832 } 5833 5834 TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) { 5835 verifyFormat("int aaaaaaaa =\n" 5836 " // Overlylongcomment\n" 5837 " b;", 5838 getLLVMStyleWithColumns(20)); 5839 verifyFormat("function(\n" 5840 " ShortArgument,\n" 5841 " LoooooooooooongArgument);\n", 5842 getLLVMStyleWithColumns(20)); 5843 } 5844 5845 TEST_F(FormatTest, IncorrectAccessSpecifier) { 5846 verifyFormat("public:"); 5847 verifyFormat("class A {\n" 5848 "public\n" 5849 " void f() {}\n" 5850 "};"); 5851 verifyFormat("public\n" 5852 "int qwerty;"); 5853 verifyFormat("public\n" 5854 "B {}"); 5855 verifyFormat("public\n" 5856 "{}"); 5857 verifyFormat("public\n" 5858 "B { int x; }"); 5859 } 5860 5861 TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) { 5862 verifyFormat("{"); 5863 verifyFormat("#})"); 5864 verifyNoCrash("(/**/[:!] ?[)."); 5865 } 5866 5867 TEST_F(FormatTest, IncorrectCodeDoNoWhile) { 5868 verifyFormat("do {\n}"); 5869 verifyFormat("do {\n}\n" 5870 "f();"); 5871 verifyFormat("do {\n}\n" 5872 "wheeee(fun);"); 5873 verifyFormat("do {\n" 5874 " f();\n" 5875 "}"); 5876 } 5877 5878 TEST_F(FormatTest, IncorrectCodeMissingParens) { 5879 verifyFormat("if {\n foo;\n foo();\n}"); 5880 verifyFormat("switch {\n foo;\n foo();\n}"); 5881 verifyFormat("for {\n foo;\n foo();\n}"); 5882 verifyFormat("while {\n foo;\n foo();\n}"); 5883 verifyFormat("do {\n foo;\n foo();\n} while;"); 5884 } 5885 5886 TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) { 5887 verifyFormat("namespace {\n" 5888 "class Foo { Foo (\n" 5889 "};\n" 5890 "} // comment"); 5891 } 5892 5893 TEST_F(FormatTest, IncorrectCodeErrorDetection) { 5894 EXPECT_EQ("{\n {}\n", format("{\n{\n}\n")); 5895 EXPECT_EQ("{\n {}\n", format("{\n {\n}\n")); 5896 EXPECT_EQ("{\n {}\n", format("{\n {\n }\n")); 5897 EXPECT_EQ("{\n {}\n}\n}\n", format("{\n {\n }\n }\n}\n")); 5898 5899 EXPECT_EQ("{\n" 5900 " {\n" 5901 " breakme(\n" 5902 " qwe);\n" 5903 " }\n", 5904 format("{\n" 5905 " {\n" 5906 " breakme(qwe);\n" 5907 "}\n", 5908 getLLVMStyleWithColumns(10))); 5909 } 5910 5911 TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) { 5912 verifyFormat("int x = {\n" 5913 " avariable,\n" 5914 " b(alongervariable)};", 5915 getLLVMStyleWithColumns(25)); 5916 } 5917 5918 TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) { 5919 verifyFormat("return (a)(b){1, 2, 3};"); 5920 } 5921 5922 TEST_F(FormatTest, LayoutCxx11BraceInitializers) { 5923 verifyFormat("vector<int> x{1, 2, 3, 4};"); 5924 verifyFormat("vector<int> x{\n" 5925 " 1, 2, 3, 4,\n" 5926 "};"); 5927 verifyFormat("vector<T> x{{}, {}, {}, {}};"); 5928 verifyFormat("f({1, 2});"); 5929 verifyFormat("auto v = Foo{-1};"); 5930 verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});"); 5931 verifyFormat("Class::Class : member{1, 2, 3} {}"); 5932 verifyFormat("new vector<int>{1, 2, 3};"); 5933 verifyFormat("new int[3]{1, 2, 3};"); 5934 verifyFormat("new int{1};"); 5935 verifyFormat("return {arg1, arg2};"); 5936 verifyFormat("return {arg1, SomeType{parameter}};"); 5937 verifyFormat("int count = set<int>{f(), g(), h()}.size();"); 5938 verifyFormat("new T{arg1, arg2};"); 5939 verifyFormat("f(MyMap[{composite, key}]);"); 5940 verifyFormat("class Class {\n" 5941 " T member = {arg1, arg2};\n" 5942 "};"); 5943 verifyFormat("vector<int> foo = {::SomeGlobalFunction()};"); 5944 verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");"); 5945 verifyFormat("int a = std::is_integral<int>{} + 0;"); 5946 5947 verifyFormat("int foo(int i) { return fo1{}(i); }"); 5948 verifyFormat("int foo(int i) { return fo1{}(i); }"); 5949 verifyFormat("auto i = decltype(x){};"); 5950 verifyFormat("std::vector<int> v = {1, 0 /* comment */};"); 5951 verifyFormat("Node n{1, Node{1000}, //\n" 5952 " 2};"); 5953 verifyFormat("Aaaa aaaaaaa{\n" 5954 " {\n" 5955 " aaaa,\n" 5956 " },\n" 5957 "};"); 5958 5959 // In combination with BinPackParameters = false. 5960 FormatStyle NoBinPacking = getLLVMStyle(); 5961 NoBinPacking.BinPackParameters = false; 5962 verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n" 5963 " bbbbb,\n" 5964 " ccccc,\n" 5965 " ddddd,\n" 5966 " eeeee,\n" 5967 " ffffff,\n" 5968 " ggggg,\n" 5969 " hhhhhh,\n" 5970 " iiiiii,\n" 5971 " jjjjjj,\n" 5972 " kkkkkk};", 5973 NoBinPacking); 5974 verifyFormat("const Aaaaaa aaaaa = {\n" 5975 " aaaaa,\n" 5976 " bbbbb,\n" 5977 " ccccc,\n" 5978 " ddddd,\n" 5979 " eeeee,\n" 5980 " ffffff,\n" 5981 " ggggg,\n" 5982 " hhhhhh,\n" 5983 " iiiiii,\n" 5984 " jjjjjj,\n" 5985 " kkkkkk,\n" 5986 "};", 5987 NoBinPacking); 5988 verifyFormat( 5989 "const Aaaaaa aaaaa = {\n" 5990 " aaaaa, bbbbb, ccccc, ddddd, eeeee, ffffff, ggggg, hhhhhh,\n" 5991 " iiiiii, jjjjjj, kkkkkk, aaaaa, bbbbb, ccccc, ddddd, eeeee,\n" 5992 " ffffff, ggggg, hhhhhh, iiiiii, jjjjjj, kkkkkk,\n" 5993 "};", 5994 NoBinPacking); 5995 5996 // FIXME: The alignment of these trailing comments might be bad. Then again, 5997 // this might be utterly useless in real code. 5998 verifyFormat("Constructor::Constructor()\n" 5999 " : some_value{ //\n" 6000 " aaaaaaa, //\n" 6001 " bbbbbbb} {}"); 6002 6003 // In braced lists, the first comment is always assumed to belong to the 6004 // first element. Thus, it can be moved to the next or previous line as 6005 // appropriate. 6006 EXPECT_EQ("function({// First element:\n" 6007 " 1,\n" 6008 " // Second element:\n" 6009 " 2});", 6010 format("function({\n" 6011 " // First element:\n" 6012 " 1,\n" 6013 " // Second element:\n" 6014 " 2});")); 6015 EXPECT_EQ("std::vector<int> MyNumbers{\n" 6016 " // First element:\n" 6017 " 1,\n" 6018 " // Second element:\n" 6019 " 2};", 6020 format("std::vector<int> MyNumbers{// First element:\n" 6021 " 1,\n" 6022 " // Second element:\n" 6023 " 2};", 6024 getLLVMStyleWithColumns(30))); 6025 // A trailing comma should still lead to an enforced line break. 6026 EXPECT_EQ("vector<int> SomeVector = {\n" 6027 " // aaa\n" 6028 " 1, 2,\n" 6029 "};", 6030 format("vector<int> SomeVector = { // aaa\n" 6031 " 1, 2, };")); 6032 6033 FormatStyle ExtraSpaces = getLLVMStyle(); 6034 ExtraSpaces.Cpp11BracedListStyle = false; 6035 ExtraSpaces.ColumnLimit = 75; 6036 verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces); 6037 verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces); 6038 verifyFormat("f({ 1, 2 });", ExtraSpaces); 6039 verifyFormat("auto v = Foo{ 1 };", ExtraSpaces); 6040 verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces); 6041 verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces); 6042 verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces); 6043 verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces); 6044 verifyFormat("return { arg1, arg2 };", ExtraSpaces); 6045 verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces); 6046 verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces); 6047 verifyFormat("new T{ arg1, arg2 };", ExtraSpaces); 6048 verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces); 6049 verifyFormat("class Class {\n" 6050 " T member = { arg1, arg2 };\n" 6051 "};", 6052 ExtraSpaces); 6053 verifyFormat( 6054 "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6055 " aaaaaaaaaaaaaaaaaaaa, aaaaa }\n" 6056 " : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 6057 " bbbbbbbbbbbbbbbbbbbb, bbbbb };", 6058 ExtraSpaces); 6059 verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces); 6060 verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });", 6061 ExtraSpaces); 6062 verifyFormat( 6063 "someFunction(OtherParam,\n" 6064 " BracedList{ // comment 1 (Forcing interesting break)\n" 6065 " param1, param2,\n" 6066 " // comment 2\n" 6067 " param3, param4 });", 6068 ExtraSpaces); 6069 verifyFormat( 6070 "std::this_thread::sleep_for(\n" 6071 " std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);", 6072 ExtraSpaces); 6073 verifyFormat( 6074 "std::vector<MyValues> aaaaaaaaaaaaaaaaaaa{\n" 6075 " aaaaaaa, aaaaaaaaaa, aaaaa, aaaaaaaaaaaaaaa, aaa, aaaaaaaaaa, a,\n" 6076 " aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaa,\n" 6077 " aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa, aaaaaaa, a};"); 6078 verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces); 6079 } 6080 6081 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) { 6082 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6083 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6084 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6085 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6086 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6087 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 6088 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6089 " // line comment\n" 6090 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6091 " 1, 22, 333, 4444, 55555,\n" 6092 " // line comment\n" 6093 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6094 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 6095 verifyFormat( 6096 "vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6097 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6098 " 1, 22, 333, 4444, 55555, 666666, // comment\n" 6099 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6100 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6101 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6102 " 7777777};"); 6103 verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n" 6104 " X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n" 6105 " X86::R8, X86::R9, X86::R10, X86::R11, 0};"); 6106 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6107 " 1, 1, 1, 1};", 6108 getLLVMStyleWithColumns(39)); 6109 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6110 " 1, 1, 1, 1};", 6111 getLLVMStyleWithColumns(38)); 6112 verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n" 6113 " 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};", 6114 getLLVMStyleWithColumns(43)); 6115 6116 // Trailing commas. 6117 verifyFormat("vector<int> x = {\n" 6118 " 1, 1, 1, 1, 1, 1, 1, 1,\n" 6119 "};", 6120 getLLVMStyleWithColumns(39)); 6121 verifyFormat("vector<int> x = {\n" 6122 " 1, 1, 1, 1, 1, 1, 1, 1, //\n" 6123 "};", 6124 getLLVMStyleWithColumns(39)); 6125 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6126 " 1, 1, 1, 1,\n" 6127 " /**/ /**/};", 6128 getLLVMStyleWithColumns(39)); 6129 verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n" 6130 " {aaaaaaaaaaaaaaaaaaa},\n" 6131 " {aaaaaaaaaaaaaaaaaaaaa},\n" 6132 " {aaaaaaaaaaaaaaaaa}};", 6133 getLLVMStyleWithColumns(60)); 6134 6135 // With nested lists, we should either format one item per line or all nested 6136 // lists one one line. 6137 // FIXME: For some nested lists, we can do better. 6138 verifyFormat( 6139 "SomeStruct my_struct_array = {\n" 6140 " {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n" 6141 " aaaaaaaaaaaaa, aaaaaaa, aaa},\n" 6142 " {aaa, aaa},\n" 6143 " {aaa, aaa},\n" 6144 " {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n" 6145 " {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n" 6146 " aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};"); 6147 6148 // No column layout should be used here. 6149 verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n" 6150 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};"); 6151 6152 verifyNoCrash("a<,"); 6153 } 6154 6155 TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) { 6156 FormatStyle DoNotMerge = getLLVMStyle(); 6157 DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 6158 6159 verifyFormat("void f() { return 42; }"); 6160 verifyFormat("void f() {\n" 6161 " return 42;\n" 6162 "}", 6163 DoNotMerge); 6164 verifyFormat("void f() {\n" 6165 " // Comment\n" 6166 "}"); 6167 verifyFormat("{\n" 6168 "#error {\n" 6169 " int a;\n" 6170 "}"); 6171 verifyFormat("{\n" 6172 " int a;\n" 6173 "#error {\n" 6174 "}"); 6175 verifyFormat("void f() {} // comment"); 6176 verifyFormat("void f() { int a; } // comment"); 6177 verifyFormat("void f() {\n" 6178 "} // comment", 6179 DoNotMerge); 6180 verifyFormat("void f() {\n" 6181 " int a;\n" 6182 "} // comment", 6183 DoNotMerge); 6184 verifyFormat("void f() {\n" 6185 "} // comment", 6186 getLLVMStyleWithColumns(15)); 6187 6188 verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23)); 6189 verifyFormat("void f() {\n return 42;\n}", getLLVMStyleWithColumns(22)); 6190 6191 verifyFormat("void f() {}", getLLVMStyleWithColumns(11)); 6192 verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10)); 6193 verifyFormat("class C {\n" 6194 " C()\n" 6195 " : iiiiiiii(nullptr),\n" 6196 " kkkkkkk(nullptr),\n" 6197 " mmmmmmm(nullptr),\n" 6198 " nnnnnnn(nullptr) {}\n" 6199 "};", 6200 getGoogleStyle()); 6201 6202 FormatStyle NoColumnLimit = getLLVMStyle(); 6203 NoColumnLimit.ColumnLimit = 0; 6204 EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit)); 6205 EXPECT_EQ("class C {\n" 6206 " A() : b(0) {}\n" 6207 "};", format("class C{A():b(0){}};", NoColumnLimit)); 6208 EXPECT_EQ("A()\n" 6209 " : b(0) {\n" 6210 "}", 6211 format("A()\n:b(0)\n{\n}", NoColumnLimit)); 6212 6213 FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit; 6214 DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine = 6215 FormatStyle::SFS_None; 6216 EXPECT_EQ("A()\n" 6217 " : b(0) {\n" 6218 "}", 6219 format("A():b(0){}", DoNotMergeNoColumnLimit)); 6220 EXPECT_EQ("A()\n" 6221 " : b(0) {\n" 6222 "}", 6223 format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit)); 6224 6225 verifyFormat("#define A \\\n" 6226 " void f() { \\\n" 6227 " int i; \\\n" 6228 " }", 6229 getLLVMStyleWithColumns(20)); 6230 verifyFormat("#define A \\\n" 6231 " void f() { int i; }", 6232 getLLVMStyleWithColumns(21)); 6233 verifyFormat("#define A \\\n" 6234 " void f() { \\\n" 6235 " int i; \\\n" 6236 " } \\\n" 6237 " int j;", 6238 getLLVMStyleWithColumns(22)); 6239 verifyFormat("#define A \\\n" 6240 " void f() { int i; } \\\n" 6241 " int j;", 6242 getLLVMStyleWithColumns(23)); 6243 } 6244 6245 TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) { 6246 FormatStyle MergeInlineOnly = getLLVMStyle(); 6247 MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 6248 verifyFormat("class C {\n" 6249 " int f() { return 42; }\n" 6250 "};", 6251 MergeInlineOnly); 6252 verifyFormat("int f() {\n" 6253 " return 42;\n" 6254 "}", 6255 MergeInlineOnly); 6256 } 6257 6258 TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) { 6259 // Elaborate type variable declarations. 6260 verifyFormat("struct foo a = {bar};\nint n;"); 6261 verifyFormat("class foo a = {bar};\nint n;"); 6262 verifyFormat("union foo a = {bar};\nint n;"); 6263 6264 // Elaborate types inside function definitions. 6265 verifyFormat("struct foo f() {}\nint n;"); 6266 verifyFormat("class foo f() {}\nint n;"); 6267 verifyFormat("union foo f() {}\nint n;"); 6268 6269 // Templates. 6270 verifyFormat("template <class X> void f() {}\nint n;"); 6271 verifyFormat("template <struct X> void f() {}\nint n;"); 6272 verifyFormat("template <union X> void f() {}\nint n;"); 6273 6274 // Actual definitions... 6275 verifyFormat("struct {\n} n;"); 6276 verifyFormat( 6277 "template <template <class T, class Y>, class Z> class X {\n} n;"); 6278 verifyFormat("union Z {\n int n;\n} x;"); 6279 verifyFormat("class MACRO Z {\n} n;"); 6280 verifyFormat("class MACRO(X) Z {\n} n;"); 6281 verifyFormat("class __attribute__(X) Z {\n} n;"); 6282 verifyFormat("class __declspec(X) Z {\n} n;"); 6283 verifyFormat("class A##B##C {\n} n;"); 6284 verifyFormat("class alignas(16) Z {\n} n;"); 6285 6286 // Redefinition from nested context: 6287 verifyFormat("class A::B::C {\n} n;"); 6288 6289 // Template definitions. 6290 verifyFormat( 6291 "template <typename F>\n" 6292 "Matcher(const Matcher<F> &Other,\n" 6293 " typename enable_if_c<is_base_of<F, T>::value &&\n" 6294 " !is_same<F, T>::value>::type * = 0)\n" 6295 " : Implementation(new ImplicitCastMatcher<F>(Other)) {}"); 6296 6297 // FIXME: This is still incorrectly handled at the formatter side. 6298 verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};"); 6299 6300 // FIXME: 6301 // This now gets parsed incorrectly as class definition. 6302 // verifyFormat("class A<int> f() {\n}\nint n;"); 6303 6304 // Elaborate types where incorrectly parsing the structural element would 6305 // break the indent. 6306 verifyFormat("if (true)\n" 6307 " class X x;\n" 6308 "else\n" 6309 " f();\n"); 6310 6311 // This is simply incomplete. Formatting is not important, but must not crash. 6312 verifyFormat("class A:"); 6313 } 6314 6315 TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) { 6316 EXPECT_EQ("#error Leave all white!!!!! space* alone!\n", 6317 format("#error Leave all white!!!!! space* alone!\n")); 6318 EXPECT_EQ( 6319 "#warning Leave all white!!!!! space* alone!\n", 6320 format("#warning Leave all white!!!!! space* alone!\n")); 6321 EXPECT_EQ("#error 1", format(" # error 1")); 6322 EXPECT_EQ("#warning 1", format(" # warning 1")); 6323 } 6324 6325 TEST_F(FormatTest, FormatHashIfExpressions) { 6326 verifyFormat("#if AAAA && BBBB"); 6327 // FIXME: Come up with a better indentation for #elif. 6328 verifyFormat( 6329 "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) && \\\n" 6330 " defined(BBBBBBBB)\n" 6331 "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) && \\\n" 6332 " defined(BBBBBBBB)\n" 6333 "#endif", 6334 getLLVMStyleWithColumns(65)); 6335 } 6336 6337 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) { 6338 FormatStyle AllowsMergedIf = getGoogleStyle(); 6339 AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; 6340 verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf); 6341 verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf); 6342 verifyFormat("if (true)\n#error E\n return 42;", AllowsMergedIf); 6343 EXPECT_EQ("if (true) return 42;", 6344 format("if (true)\nreturn 42;", AllowsMergedIf)); 6345 FormatStyle ShortMergedIf = AllowsMergedIf; 6346 ShortMergedIf.ColumnLimit = 25; 6347 verifyFormat("#define A \\\n" 6348 " if (true) return 42;", 6349 ShortMergedIf); 6350 verifyFormat("#define A \\\n" 6351 " f(); \\\n" 6352 " if (true)\n" 6353 "#define B", 6354 ShortMergedIf); 6355 verifyFormat("#define A \\\n" 6356 " f(); \\\n" 6357 " if (true)\n" 6358 "g();", 6359 ShortMergedIf); 6360 verifyFormat("{\n" 6361 "#ifdef A\n" 6362 " // Comment\n" 6363 " if (true) continue;\n" 6364 "#endif\n" 6365 " // Comment\n" 6366 " if (true) continue;\n" 6367 "}", 6368 ShortMergedIf); 6369 ShortMergedIf.ColumnLimit = 29; 6370 verifyFormat("#define A \\\n" 6371 " if (aaaaaaaaaa) return 1; \\\n" 6372 " return 2;", 6373 ShortMergedIf); 6374 ShortMergedIf.ColumnLimit = 28; 6375 verifyFormat("#define A \\\n" 6376 " if (aaaaaaaaaa) \\\n" 6377 " return 1; \\\n" 6378 " return 2;", 6379 ShortMergedIf); 6380 } 6381 6382 TEST_F(FormatTest, BlockCommentsInControlLoops) { 6383 verifyFormat("if (0) /* a comment in a strange place */ {\n" 6384 " f();\n" 6385 "}"); 6386 verifyFormat("if (0) /* a comment in a strange place */ {\n" 6387 " f();\n" 6388 "} /* another comment */ else /* comment #3 */ {\n" 6389 " g();\n" 6390 "}"); 6391 verifyFormat("while (0) /* a comment in a strange place */ {\n" 6392 " f();\n" 6393 "}"); 6394 verifyFormat("for (;;) /* a comment in a strange place */ {\n" 6395 " f();\n" 6396 "}"); 6397 verifyFormat("do /* a comment in a strange place */ {\n" 6398 " f();\n" 6399 "} /* another comment */ while (0);"); 6400 } 6401 6402 TEST_F(FormatTest, BlockComments) { 6403 EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */", 6404 format("/* *//* */ /* */\n/* *//* */ /* */")); 6405 EXPECT_EQ("/* */ a /* */ b;", format(" /* */ a/* */ b;")); 6406 EXPECT_EQ("#define A /*123*/ \\\n" 6407 " b\n" 6408 "/* */\n" 6409 "someCall(\n" 6410 " parameter);", 6411 format("#define A /*123*/ b\n" 6412 "/* */\n" 6413 "someCall(parameter);", 6414 getLLVMStyleWithColumns(15))); 6415 6416 EXPECT_EQ("#define A\n" 6417 "/* */ someCall(\n" 6418 " parameter);", 6419 format("#define A\n" 6420 "/* */someCall(parameter);", 6421 getLLVMStyleWithColumns(15))); 6422 EXPECT_EQ("/*\n**\n*/", format("/*\n**\n*/")); 6423 EXPECT_EQ("/*\n" 6424 "*\n" 6425 " * aaaaaa\n" 6426 "*aaaaaa\n" 6427 "*/", 6428 format("/*\n" 6429 "*\n" 6430 " * aaaaaa aaaaaa\n" 6431 "*/", 6432 getLLVMStyleWithColumns(10))); 6433 EXPECT_EQ("/*\n" 6434 "**\n" 6435 "* aaaaaa\n" 6436 "*aaaaaa\n" 6437 "*/", 6438 format("/*\n" 6439 "**\n" 6440 "* aaaaaa aaaaaa\n" 6441 "*/", 6442 getLLVMStyleWithColumns(10))); 6443 6444 FormatStyle NoBinPacking = getLLVMStyle(); 6445 NoBinPacking.BinPackParameters = false; 6446 EXPECT_EQ("someFunction(1, /* comment 1 */\n" 6447 " 2, /* comment 2 */\n" 6448 " 3, /* comment 3 */\n" 6449 " aaaa,\n" 6450 " bbbb);", 6451 format("someFunction (1, /* comment 1 */\n" 6452 " 2, /* comment 2 */ \n" 6453 " 3, /* comment 3 */\n" 6454 "aaaa, bbbb );", 6455 NoBinPacking)); 6456 verifyFormat( 6457 "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6458 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 6459 EXPECT_EQ( 6460 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 6461 " aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6462 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;", 6463 format( 6464 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 6465 " aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6466 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;")); 6467 EXPECT_EQ( 6468 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 6469 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 6470 "int cccccccccccccccccccccccccccccc; /* comment */\n", 6471 format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 6472 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 6473 "int cccccccccccccccccccccccccccccc; /* comment */\n")); 6474 6475 verifyFormat("void f(int * /* unused */) {}"); 6476 6477 EXPECT_EQ("/*\n" 6478 " **\n" 6479 " */", 6480 format("/*\n" 6481 " **\n" 6482 " */")); 6483 EXPECT_EQ("/*\n" 6484 " *q\n" 6485 " */", 6486 format("/*\n" 6487 " *q\n" 6488 " */")); 6489 EXPECT_EQ("/*\n" 6490 " * q\n" 6491 " */", 6492 format("/*\n" 6493 " * q\n" 6494 " */")); 6495 EXPECT_EQ("/*\n" 6496 " **/", 6497 format("/*\n" 6498 " **/")); 6499 EXPECT_EQ("/*\n" 6500 " ***/", 6501 format("/*\n" 6502 " ***/")); 6503 } 6504 6505 TEST_F(FormatTest, BlockCommentsInMacros) { 6506 EXPECT_EQ("#define A \\\n" 6507 " { \\\n" 6508 " /* one line */ \\\n" 6509 " someCall();", 6510 format("#define A { \\\n" 6511 " /* one line */ \\\n" 6512 " someCall();", 6513 getLLVMStyleWithColumns(20))); 6514 EXPECT_EQ("#define A \\\n" 6515 " { \\\n" 6516 " /* previous */ \\\n" 6517 " /* one line */ \\\n" 6518 " someCall();", 6519 format("#define A { \\\n" 6520 " /* previous */ \\\n" 6521 " /* one line */ \\\n" 6522 " someCall();", 6523 getLLVMStyleWithColumns(20))); 6524 } 6525 6526 TEST_F(FormatTest, BlockCommentsAtEndOfLine) { 6527 EXPECT_EQ("a = {\n" 6528 " 1111 /* */\n" 6529 "};", 6530 format("a = {1111 /* */\n" 6531 "};", 6532 getLLVMStyleWithColumns(15))); 6533 EXPECT_EQ("a = {\n" 6534 " 1111 /* */\n" 6535 "};", 6536 format("a = {1111 /* */\n" 6537 "};", 6538 getLLVMStyleWithColumns(15))); 6539 6540 // FIXME: The formatting is still wrong here. 6541 EXPECT_EQ("a = {\n" 6542 " 1111 /* a\n" 6543 " */\n" 6544 "};", 6545 format("a = {1111 /* a */\n" 6546 "};", 6547 getLLVMStyleWithColumns(15))); 6548 } 6549 6550 TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) { 6551 // FIXME: This is not what we want... 6552 verifyFormat("{\n" 6553 "// a" 6554 "// b"); 6555 } 6556 6557 TEST_F(FormatTest, FormatStarDependingOnContext) { 6558 verifyFormat("void f(int *a);"); 6559 verifyFormat("void f() { f(fint * b); }"); 6560 verifyFormat("class A {\n void f(int *a);\n};"); 6561 verifyFormat("class A {\n int *a;\n};"); 6562 verifyFormat("namespace a {\n" 6563 "namespace b {\n" 6564 "class A {\n" 6565 " void f() {}\n" 6566 " int *a;\n" 6567 "};\n" 6568 "}\n" 6569 "}"); 6570 } 6571 6572 TEST_F(FormatTest, SpecialTokensAtEndOfLine) { 6573 verifyFormat("while"); 6574 verifyFormat("operator"); 6575 } 6576 6577 //===----------------------------------------------------------------------===// 6578 // Objective-C tests. 6579 //===----------------------------------------------------------------------===// 6580 6581 TEST_F(FormatTest, FormatForObjectiveCMethodDecls) { 6582 verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;"); 6583 EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;", 6584 format("-(NSUInteger)indexOfObject:(id)anObject;")); 6585 EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;")); 6586 EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;")); 6587 EXPECT_EQ("- (NSInteger)Method3:(id)anObject;", 6588 format("-(NSInteger)Method3:(id)anObject;")); 6589 EXPECT_EQ("- (NSInteger)Method4:(id)anObject;", 6590 format("-(NSInteger)Method4:(id)anObject;")); 6591 EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;", 6592 format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;")); 6593 EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;", 6594 format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;")); 6595 EXPECT_EQ( 6596 "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;", 6597 format( 6598 "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;")); 6599 6600 // Very long objectiveC method declaration. 6601 verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n" 6602 " inRange:(NSRange)range\n" 6603 " outRange:(NSRange)out_range\n" 6604 " outRange1:(NSRange)out_range1\n" 6605 " outRange2:(NSRange)out_range2\n" 6606 " outRange3:(NSRange)out_range3\n" 6607 " outRange4:(NSRange)out_range4\n" 6608 " outRange5:(NSRange)out_range5\n" 6609 " outRange6:(NSRange)out_range6\n" 6610 " outRange7:(NSRange)out_range7\n" 6611 " outRange8:(NSRange)out_range8\n" 6612 " outRange9:(NSRange)out_range9;"); 6613 6614 verifyFormat("- (int)sum:(vector<int>)numbers;"); 6615 verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;"); 6616 // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC 6617 // protocol lists (but not for template classes): 6618 //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;"); 6619 6620 verifyFormat("- (int (*)())foo:(int (*)())f;"); 6621 verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;"); 6622 6623 // If there's no return type (very rare in practice!), LLVM and Google style 6624 // agree. 6625 verifyFormat("- foo;"); 6626 verifyFormat("- foo:(int)f;"); 6627 verifyGoogleFormat("- foo:(int)foo;"); 6628 } 6629 6630 TEST_F(FormatTest, FormatObjCInterface) { 6631 verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n" 6632 "@public\n" 6633 " int field1;\n" 6634 "@protected\n" 6635 " int field2;\n" 6636 "@private\n" 6637 " int field3;\n" 6638 "@package\n" 6639 " int field4;\n" 6640 "}\n" 6641 "+ (id)init;\n" 6642 "@end"); 6643 6644 verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n" 6645 " @public\n" 6646 " int field1;\n" 6647 " @protected\n" 6648 " int field2;\n" 6649 " @private\n" 6650 " int field3;\n" 6651 " @package\n" 6652 " int field4;\n" 6653 "}\n" 6654 "+ (id)init;\n" 6655 "@end"); 6656 6657 verifyFormat("@interface /* wait for it */ Foo\n" 6658 "+ (id)init;\n" 6659 "// Look, a comment!\n" 6660 "- (int)answerWith:(int)i;\n" 6661 "@end"); 6662 6663 verifyFormat("@interface Foo\n" 6664 "@end\n" 6665 "@interface Bar\n" 6666 "@end"); 6667 6668 verifyFormat("@interface Foo : Bar\n" 6669 "+ (id)init;\n" 6670 "@end"); 6671 6672 verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n" 6673 "+ (id)init;\n" 6674 "@end"); 6675 6676 verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n" 6677 "+ (id)init;\n" 6678 "@end"); 6679 6680 verifyFormat("@interface Foo (HackStuff)\n" 6681 "+ (id)init;\n" 6682 "@end"); 6683 6684 verifyFormat("@interface Foo ()\n" 6685 "+ (id)init;\n" 6686 "@end"); 6687 6688 verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n" 6689 "+ (id)init;\n" 6690 "@end"); 6691 6692 verifyGoogleFormat("@interface Foo (HackStuff) <MyProtocol>\n" 6693 "+ (id)init;\n" 6694 "@end"); 6695 6696 verifyFormat("@interface Foo {\n" 6697 " int _i;\n" 6698 "}\n" 6699 "+ (id)init;\n" 6700 "@end"); 6701 6702 verifyFormat("@interface Foo : Bar {\n" 6703 " int _i;\n" 6704 "}\n" 6705 "+ (id)init;\n" 6706 "@end"); 6707 6708 verifyFormat("@interface Foo : Bar <Baz, Quux> {\n" 6709 " int _i;\n" 6710 "}\n" 6711 "+ (id)init;\n" 6712 "@end"); 6713 6714 verifyFormat("@interface Foo (HackStuff) {\n" 6715 " int _i;\n" 6716 "}\n" 6717 "+ (id)init;\n" 6718 "@end"); 6719 6720 verifyFormat("@interface Foo () {\n" 6721 " int _i;\n" 6722 "}\n" 6723 "+ (id)init;\n" 6724 "@end"); 6725 6726 verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n" 6727 " int _i;\n" 6728 "}\n" 6729 "+ (id)init;\n" 6730 "@end"); 6731 6732 FormatStyle OnePerLine = getGoogleStyle(); 6733 OnePerLine.BinPackParameters = false; 6734 verifyFormat("@interface aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa () <\n" 6735 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6736 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6737 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6738 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n" 6739 "}", 6740 OnePerLine); 6741 } 6742 6743 TEST_F(FormatTest, FormatObjCImplementation) { 6744 verifyFormat("@implementation Foo : NSObject {\n" 6745 "@public\n" 6746 " int field1;\n" 6747 "@protected\n" 6748 " int field2;\n" 6749 "@private\n" 6750 " int field3;\n" 6751 "@package\n" 6752 " int field4;\n" 6753 "}\n" 6754 "+ (id)init {\n}\n" 6755 "@end"); 6756 6757 verifyGoogleFormat("@implementation Foo : NSObject {\n" 6758 " @public\n" 6759 " int field1;\n" 6760 " @protected\n" 6761 " int field2;\n" 6762 " @private\n" 6763 " int field3;\n" 6764 " @package\n" 6765 " int field4;\n" 6766 "}\n" 6767 "+ (id)init {\n}\n" 6768 "@end"); 6769 6770 verifyFormat("@implementation Foo\n" 6771 "+ (id)init {\n" 6772 " if (true)\n" 6773 " return nil;\n" 6774 "}\n" 6775 "// Look, a comment!\n" 6776 "- (int)answerWith:(int)i {\n" 6777 " return i;\n" 6778 "}\n" 6779 "+ (int)answerWith:(int)i {\n" 6780 " return i;\n" 6781 "}\n" 6782 "@end"); 6783 6784 verifyFormat("@implementation Foo\n" 6785 "@end\n" 6786 "@implementation Bar\n" 6787 "@end"); 6788 6789 EXPECT_EQ("@implementation Foo : Bar\n" 6790 "+ (id)init {\n}\n" 6791 "- (void)foo {\n}\n" 6792 "@end", 6793 format("@implementation Foo : Bar\n" 6794 "+(id)init{}\n" 6795 "-(void)foo{}\n" 6796 "@end")); 6797 6798 verifyFormat("@implementation Foo {\n" 6799 " int _i;\n" 6800 "}\n" 6801 "+ (id)init {\n}\n" 6802 "@end"); 6803 6804 verifyFormat("@implementation Foo : Bar {\n" 6805 " int _i;\n" 6806 "}\n" 6807 "+ (id)init {\n}\n" 6808 "@end"); 6809 6810 verifyFormat("@implementation Foo (HackStuff)\n" 6811 "+ (id)init {\n}\n" 6812 "@end"); 6813 verifyFormat("@implementation ObjcClass\n" 6814 "- (void)method;\n" 6815 "{}\n" 6816 "@end"); 6817 } 6818 6819 TEST_F(FormatTest, FormatObjCProtocol) { 6820 verifyFormat("@protocol Foo\n" 6821 "@property(weak) id delegate;\n" 6822 "- (NSUInteger)numberOfThings;\n" 6823 "@end"); 6824 6825 verifyFormat("@protocol MyProtocol <NSObject>\n" 6826 "- (NSUInteger)numberOfThings;\n" 6827 "@end"); 6828 6829 verifyGoogleFormat("@protocol MyProtocol<NSObject>\n" 6830 "- (NSUInteger)numberOfThings;\n" 6831 "@end"); 6832 6833 verifyFormat("@protocol Foo;\n" 6834 "@protocol Bar;\n"); 6835 6836 verifyFormat("@protocol Foo\n" 6837 "@end\n" 6838 "@protocol Bar\n" 6839 "@end"); 6840 6841 verifyFormat("@protocol myProtocol\n" 6842 "- (void)mandatoryWithInt:(int)i;\n" 6843 "@optional\n" 6844 "- (void)optional;\n" 6845 "@required\n" 6846 "- (void)required;\n" 6847 "@optional\n" 6848 "@property(assign) int madProp;\n" 6849 "@end\n"); 6850 6851 verifyFormat("@property(nonatomic, assign, readonly)\n" 6852 " int *looooooooooooooooooooooooooooongNumber;\n" 6853 "@property(nonatomic, assign, readonly)\n" 6854 " NSString *looooooooooooooooooooooooooooongName;"); 6855 6856 verifyFormat("@implementation PR18406\n" 6857 "}\n" 6858 "@end"); 6859 } 6860 6861 TEST_F(FormatTest, FormatObjCMethodDeclarations) { 6862 verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n" 6863 " rect:(NSRect)theRect\n" 6864 " interval:(float)theInterval {\n" 6865 "}"); 6866 verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n" 6867 " longKeyword:(NSRect)theRect\n" 6868 " evenLongerKeyword:(float)theInterval\n" 6869 " error:(NSError **)theError {\n" 6870 "}"); 6871 verifyFormat("- (instancetype)initXxxxxx:(id<x>)x\n" 6872 " y:(id<yyyyyyyyyyyyyyyyyyyy>)y\n" 6873 " NS_DESIGNATED_INITIALIZER;", 6874 getLLVMStyleWithColumns(60)); 6875 } 6876 6877 TEST_F(FormatTest, FormatObjCMethodExpr) { 6878 verifyFormat("[foo bar:baz];"); 6879 verifyFormat("return [foo bar:baz];"); 6880 verifyFormat("return (a)[foo bar:baz];"); 6881 verifyFormat("f([foo bar:baz]);"); 6882 verifyFormat("f(2, [foo bar:baz]);"); 6883 verifyFormat("f(2, a ? b : c);"); 6884 verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];"); 6885 6886 // Unary operators. 6887 verifyFormat("int a = +[foo bar:baz];"); 6888 verifyFormat("int a = -[foo bar:baz];"); 6889 verifyFormat("int a = ![foo bar:baz];"); 6890 verifyFormat("int a = ~[foo bar:baz];"); 6891 verifyFormat("int a = ++[foo bar:baz];"); 6892 verifyFormat("int a = --[foo bar:baz];"); 6893 verifyFormat("int a = sizeof [foo bar:baz];"); 6894 verifyFormat("int a = alignof [foo bar:baz];", getGoogleStyle()); 6895 verifyFormat("int a = &[foo bar:baz];"); 6896 verifyFormat("int a = *[foo bar:baz];"); 6897 // FIXME: Make casts work, without breaking f()[4]. 6898 //verifyFormat("int a = (int)[foo bar:baz];"); 6899 //verifyFormat("return (int)[foo bar:baz];"); 6900 //verifyFormat("(void)[foo bar:baz];"); 6901 verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];"); 6902 6903 // Binary operators. 6904 verifyFormat("[foo bar:baz], [foo bar:baz];"); 6905 verifyFormat("[foo bar:baz] = [foo bar:baz];"); 6906 verifyFormat("[foo bar:baz] *= [foo bar:baz];"); 6907 verifyFormat("[foo bar:baz] /= [foo bar:baz];"); 6908 verifyFormat("[foo bar:baz] %= [foo bar:baz];"); 6909 verifyFormat("[foo bar:baz] += [foo bar:baz];"); 6910 verifyFormat("[foo bar:baz] -= [foo bar:baz];"); 6911 verifyFormat("[foo bar:baz] <<= [foo bar:baz];"); 6912 verifyFormat("[foo bar:baz] >>= [foo bar:baz];"); 6913 verifyFormat("[foo bar:baz] &= [foo bar:baz];"); 6914 verifyFormat("[foo bar:baz] ^= [foo bar:baz];"); 6915 verifyFormat("[foo bar:baz] |= [foo bar:baz];"); 6916 verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];"); 6917 verifyFormat("[foo bar:baz] || [foo bar:baz];"); 6918 verifyFormat("[foo bar:baz] && [foo bar:baz];"); 6919 verifyFormat("[foo bar:baz] | [foo bar:baz];"); 6920 verifyFormat("[foo bar:baz] ^ [foo bar:baz];"); 6921 verifyFormat("[foo bar:baz] & [foo bar:baz];"); 6922 verifyFormat("[foo bar:baz] == [foo bar:baz];"); 6923 verifyFormat("[foo bar:baz] != [foo bar:baz];"); 6924 verifyFormat("[foo bar:baz] >= [foo bar:baz];"); 6925 verifyFormat("[foo bar:baz] <= [foo bar:baz];"); 6926 verifyFormat("[foo bar:baz] > [foo bar:baz];"); 6927 verifyFormat("[foo bar:baz] < [foo bar:baz];"); 6928 verifyFormat("[foo bar:baz] >> [foo bar:baz];"); 6929 verifyFormat("[foo bar:baz] << [foo bar:baz];"); 6930 verifyFormat("[foo bar:baz] - [foo bar:baz];"); 6931 verifyFormat("[foo bar:baz] + [foo bar:baz];"); 6932 verifyFormat("[foo bar:baz] * [foo bar:baz];"); 6933 verifyFormat("[foo bar:baz] / [foo bar:baz];"); 6934 verifyFormat("[foo bar:baz] % [foo bar:baz];"); 6935 // Whew! 6936 6937 verifyFormat("return in[42];"); 6938 verifyFormat("for (auto v : in[1]) {\n}"); 6939 verifyFormat("for (id foo in [self getStuffFor:bla]) {\n" 6940 "}"); 6941 verifyFormat("[self aaaaa:MACRO(a, b:, c:)];"); 6942 6943 verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];"); 6944 verifyFormat("[self stuffWithInt:a ? b : c float:4.5];"); 6945 verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];"); 6946 verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];"); 6947 verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]"); 6948 verifyFormat("[button setAction:@selector(zoomOut:)];"); 6949 verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];"); 6950 6951 verifyFormat("arr[[self indexForFoo:a]];"); 6952 verifyFormat("throw [self errorFor:a];"); 6953 verifyFormat("@throw [self errorFor:a];"); 6954 6955 verifyFormat("[(id)foo bar:(id)baz quux:(id)snorf];"); 6956 verifyFormat("[(id)foo bar:(id) ? baz : quux];"); 6957 verifyFormat("4 > 4 ? (id)a : (id)baz;"); 6958 6959 // This tests that the formatter doesn't break after "backing" but before ":", 6960 // which would be at 80 columns. 6961 verifyFormat( 6962 "void f() {\n" 6963 " if ((self = [super initWithContentRect:contentRect\n" 6964 " styleMask:styleMask ?: otherMask\n" 6965 " backing:NSBackingStoreBuffered\n" 6966 " defer:YES]))"); 6967 6968 verifyFormat( 6969 "[foo checkThatBreakingAfterColonWorksOk:\n" 6970 " [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];"); 6971 6972 verifyFormat("[myObj short:arg1 // Force line break\n" 6973 " longKeyword:arg2 != nil ? arg2 : @\"longKeyword\"\n" 6974 " evenLongerKeyword:arg3 ?: @\"evenLongerKeyword\"\n" 6975 " error:arg4];"); 6976 verifyFormat( 6977 "void f() {\n" 6978 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 6979 " initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n" 6980 " pos.width(), pos.height())\n" 6981 " styleMask:NSBorderlessWindowMask\n" 6982 " backing:NSBackingStoreBuffered\n" 6983 " defer:NO]);\n" 6984 "}"); 6985 verifyFormat( 6986 "void f() {\n" 6987 " popup_wdow_.reset([[RenderWidgetPopupWindow alloc]\n" 6988 " iniithContentRect:NSMakRet(origin_global.x, origin_global.y,\n" 6989 " pos.width(), pos.height())\n" 6990 " syeMask:NSBorderlessWindowMask\n" 6991 " bking:NSBackingStoreBuffered\n" 6992 " der:NO]);\n" 6993 "}", 6994 getLLVMStyleWithColumns(70)); 6995 verifyFormat( 6996 "void f() {\n" 6997 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 6998 " initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n" 6999 " pos.width(), pos.height())\n" 7000 " styleMask:NSBorderlessWindowMask\n" 7001 " backing:NSBackingStoreBuffered\n" 7002 " defer:NO]);\n" 7003 "}", 7004 getChromiumStyle(FormatStyle::LK_Cpp)); 7005 verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n" 7006 " with:contentsNativeView];"); 7007 7008 verifyFormat( 7009 "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n" 7010 " owner:nillllll];"); 7011 7012 verifyFormat( 7013 "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n" 7014 " forType:kBookmarkButtonDragType];"); 7015 7016 verifyFormat("[defaultCenter addObserver:self\n" 7017 " selector:@selector(willEnterFullscreen)\n" 7018 " name:kWillEnterFullscreenNotification\n" 7019 " object:nil];"); 7020 verifyFormat("[image_rep drawInRect:drawRect\n" 7021 " fromRect:NSZeroRect\n" 7022 " operation:NSCompositeCopy\n" 7023 " fraction:1.0\n" 7024 " respectFlipped:NO\n" 7025 " hints:nil];"); 7026 7027 verifyFormat( 7028 "scoped_nsobject<NSTextField> message(\n" 7029 " // The frame will be fixed up when |-setMessageText:| is called.\n" 7030 " [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);"); 7031 verifyFormat("[self aaaaaa:bbbbbbbbbbbbb\n" 7032 " aaaaaaaaaa:bbbbbbbbbbbbbbbbb\n" 7033 " aaaaa:bbbbbbbbbbb + bbbbbbbbbbbb\n" 7034 " aaaa:bbb];"); 7035 verifyFormat("[self param:function( //\n" 7036 " parameter)]"); 7037 verifyFormat( 7038 "[self aaaaaaaaaa:aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 7039 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 7040 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa];"); 7041 7042 // Variadic parameters. 7043 verifyFormat( 7044 "NSArray *myStrings = [NSArray stringarray:@\"a\", @\"b\", nil];"); 7045 verifyFormat( 7046 "[self aaaaaaaaaaaaa:aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 7047 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 7048 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa];"); 7049 verifyFormat("[self // break\n" 7050 " a:a\n" 7051 " aaa:aaa];"); 7052 verifyFormat("bool a = ([aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaa ||\n" 7053 " [aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaaaaa);"); 7054 } 7055 7056 TEST_F(FormatTest, ObjCAt) { 7057 verifyFormat("@autoreleasepool"); 7058 verifyFormat("@catch"); 7059 verifyFormat("@class"); 7060 verifyFormat("@compatibility_alias"); 7061 verifyFormat("@defs"); 7062 verifyFormat("@dynamic"); 7063 verifyFormat("@encode"); 7064 verifyFormat("@end"); 7065 verifyFormat("@finally"); 7066 verifyFormat("@implementation"); 7067 verifyFormat("@import"); 7068 verifyFormat("@interface"); 7069 verifyFormat("@optional"); 7070 verifyFormat("@package"); 7071 verifyFormat("@private"); 7072 verifyFormat("@property"); 7073 verifyFormat("@protected"); 7074 verifyFormat("@protocol"); 7075 verifyFormat("@public"); 7076 verifyFormat("@required"); 7077 verifyFormat("@selector"); 7078 verifyFormat("@synchronized"); 7079 verifyFormat("@synthesize"); 7080 verifyFormat("@throw"); 7081 verifyFormat("@try"); 7082 7083 EXPECT_EQ("@interface", format("@ interface")); 7084 7085 // The precise formatting of this doesn't matter, nobody writes code like 7086 // this. 7087 verifyFormat("@ /*foo*/ interface"); 7088 } 7089 7090 TEST_F(FormatTest, ObjCSnippets) { 7091 verifyFormat("@autoreleasepool {\n" 7092 " foo();\n" 7093 "}"); 7094 verifyFormat("@class Foo, Bar;"); 7095 verifyFormat("@compatibility_alias AliasName ExistingClass;"); 7096 verifyFormat("@dynamic textColor;"); 7097 verifyFormat("char *buf1 = @encode(int *);"); 7098 verifyFormat("char *buf1 = @encode(typeof(4 * 5));"); 7099 verifyFormat("char *buf1 = @encode(int **);"); 7100 verifyFormat("Protocol *proto = @protocol(p1);"); 7101 verifyFormat("SEL s = @selector(foo:);"); 7102 verifyFormat("@synchronized(self) {\n" 7103 " f();\n" 7104 "}"); 7105 7106 verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 7107 verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 7108 7109 verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;"); 7110 verifyFormat("@property(assign, getter=isEditable) BOOL editable;"); 7111 verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;"); 7112 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 7113 getMozillaStyle()); 7114 verifyFormat("@property BOOL editable;", getMozillaStyle()); 7115 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 7116 getWebKitStyle()); 7117 verifyFormat("@property BOOL editable;", getWebKitStyle()); 7118 7119 verifyFormat("@import foo.bar;\n" 7120 "@import baz;"); 7121 } 7122 7123 TEST_F(FormatTest, ObjCLiterals) { 7124 verifyFormat("@\"String\""); 7125 verifyFormat("@1"); 7126 verifyFormat("@+4.8"); 7127 verifyFormat("@-4"); 7128 verifyFormat("@1LL"); 7129 verifyFormat("@.5"); 7130 verifyFormat("@'c'"); 7131 verifyFormat("@true"); 7132 7133 verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);"); 7134 verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);"); 7135 verifyFormat("NSNumber *favoriteColor = @(Green);"); 7136 verifyFormat("NSString *path = @(getenv(\"PATH\"));"); 7137 7138 verifyFormat("[dictionary setObject:@(1) forKey:@\"number\"];"); 7139 } 7140 7141 TEST_F(FormatTest, ObjCDictLiterals) { 7142 verifyFormat("@{"); 7143 verifyFormat("@{}"); 7144 verifyFormat("@{@\"one\" : @1}"); 7145 verifyFormat("return @{@\"one\" : @1;"); 7146 verifyFormat("@{@\"one\" : @1}"); 7147 7148 verifyFormat("@{@\"one\" : @{@2 : @1}}"); 7149 verifyFormat("@{\n" 7150 " @\"one\" : @{@2 : @1},\n" 7151 "}"); 7152 7153 verifyFormat("@{1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2}"); 7154 verifyFormat("[self setDict:@{}"); 7155 verifyFormat("[self setDict:@{@1 : @2}"); 7156 verifyFormat("NSLog(@\"%@\", @{@1 : @2, @2 : @3}[@1]);"); 7157 verifyFormat( 7158 "NSDictionary *masses = @{@\"H\" : @1.0078, @\"He\" : @4.0026};"); 7159 verifyFormat( 7160 "NSDictionary *settings = @{AVEncoderKey : @(AVAudioQualityMax)};"); 7161 7162 verifyFormat( 7163 "NSDictionary *d = @{\n" 7164 " @\"nam\" : NSUserNam(),\n" 7165 " @\"dte\" : [NSDate date],\n" 7166 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 7167 "};"); 7168 verifyFormat( 7169 "@{\n" 7170 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 7171 "regularFont,\n" 7172 "};"); 7173 verifyGoogleFormat( 7174 "@{\n" 7175 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 7176 "regularFont,\n" 7177 "};"); 7178 verifyFormat( 7179 "@{\n" 7180 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee :\n" 7181 " reeeeeeeeeeeeeeeeeeeeeeeegularFont,\n" 7182 "};"); 7183 7184 // We should try to be robust in case someone forgets the "@". 7185 verifyFormat( 7186 "NSDictionary *d = {\n" 7187 " @\"nam\" : NSUserNam(),\n" 7188 " @\"dte\" : [NSDate date],\n" 7189 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 7190 "};"); 7191 verifyFormat("NSMutableDictionary *dictionary =\n" 7192 " [NSMutableDictionary dictionaryWithDictionary:@{\n" 7193 " aaaaaaaaaaaaaaaaaaaaa : aaaaaaaaaaaaa,\n" 7194 " bbbbbbbbbbbbbbbbbb : bbbbb,\n" 7195 " cccccccccccccccc : ccccccccccccccc\n" 7196 " }];"); 7197 } 7198 7199 TEST_F(FormatTest, ObjCArrayLiterals) { 7200 verifyFormat("@["); 7201 verifyFormat("@[]"); 7202 verifyFormat( 7203 "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];"); 7204 verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];"); 7205 verifyFormat("NSArray *array = @[ [foo description] ];"); 7206 7207 verifyFormat( 7208 "NSArray *some_variable = @[\n" 7209 " aaaa == bbbbbbbbbbb ? @\"aaaaaaaaaaaa\" : @\"aaaaaaaaaaaaaa\",\n" 7210 " @\"aaaaaaaaaaaaaaaaa\",\n" 7211 " @\"aaaaaaaaaaaaaaaaa\",\n" 7212 " @\"aaaaaaaaaaaaaaaaa\"\n" 7213 "];"); 7214 verifyFormat("NSArray *some_variable = @[\n" 7215 " @\"aaaaaaaaaaaaaaaaa\",\n" 7216 " @\"aaaaaaaaaaaaaaaaa\",\n" 7217 " @\"aaaaaaaaaaaaaaaaa\",\n" 7218 " @\"aaaaaaaaaaaaaaaaa\",\n" 7219 "];"); 7220 verifyGoogleFormat("NSArray *some_variable = @[\n" 7221 " @\"aaaaaaaaaaaaaaaaa\",\n" 7222 " @\"aaaaaaaaaaaaaaaaa\",\n" 7223 " @\"aaaaaaaaaaaaaaaaa\",\n" 7224 " @\"aaaaaaaaaaaaaaaaa\"\n" 7225 "];"); 7226 verifyFormat("NSArray *array = @[\n" 7227 " @\"a\",\n" 7228 " @\"a\",\n" // Trailing comma -> one per line. 7229 "];"); 7230 7231 // We should try to be robust in case someone forgets the "@". 7232 verifyFormat("NSArray *some_variable = [\n" 7233 " @\"aaaaaaaaaaaaaaaaa\",\n" 7234 " @\"aaaaaaaaaaaaaaaaa\",\n" 7235 " @\"aaaaaaaaaaaaaaaaa\",\n" 7236 " @\"aaaaaaaaaaaaaaaaa\",\n" 7237 "];"); 7238 verifyFormat( 7239 "- (NSAttributedString *)attributedStringForSegment:(NSUInteger)segment\n" 7240 " index:(NSUInteger)index\n" 7241 " nonDigitAttributes:\n" 7242 " (NSDictionary *)noDigitAttributes;"); 7243 verifyFormat( 7244 "[someFunction someLooooooooooooongParameter:\n" 7245 " @[ NSBundle.mainBundle.infoDictionary[@\"a\"] ]];"); 7246 } 7247 7248 TEST_F(FormatTest, ReformatRegionAdjustsIndent) { 7249 EXPECT_EQ("{\n" 7250 "{\n" 7251 "a;\n" 7252 "b;\n" 7253 "}\n" 7254 "}", 7255 format("{\n" 7256 "{\n" 7257 "a;\n" 7258 " b;\n" 7259 "}\n" 7260 "}", 7261 13, 2, getLLVMStyle())); 7262 EXPECT_EQ("{\n" 7263 "{\n" 7264 " a;\n" 7265 "b;\n" 7266 "}\n" 7267 "}", 7268 format("{\n" 7269 "{\n" 7270 " a;\n" 7271 "b;\n" 7272 "}\n" 7273 "}", 7274 9, 2, getLLVMStyle())); 7275 EXPECT_EQ("{\n" 7276 "{\n" 7277 "public:\n" 7278 " b;\n" 7279 "}\n" 7280 "}", 7281 format("{\n" 7282 "{\n" 7283 "public:\n" 7284 " b;\n" 7285 "}\n" 7286 "}", 7287 17, 2, getLLVMStyle())); 7288 EXPECT_EQ("{\n" 7289 "{\n" 7290 "a;\n" 7291 "}\n" 7292 "{\n" 7293 " b; //\n" 7294 "}\n" 7295 "}", 7296 format("{\n" 7297 "{\n" 7298 "a;\n" 7299 "}\n" 7300 "{\n" 7301 " b; //\n" 7302 "}\n" 7303 "}", 7304 22, 2, getLLVMStyle())); 7305 EXPECT_EQ(" {\n" 7306 " a; //\n" 7307 " }", 7308 format(" {\n" 7309 "a; //\n" 7310 " }", 7311 4, 2, getLLVMStyle())); 7312 EXPECT_EQ("void f() {}\n" 7313 "void g() {}", 7314 format("void f() {}\n" 7315 "void g() {}", 7316 13, 0, getLLVMStyle())); 7317 EXPECT_EQ("int a; // comment\n" 7318 " // line 2\n" 7319 "int b;", 7320 format("int a; // comment\n" 7321 " // line 2\n" 7322 " int b;", 7323 35, 0, getLLVMStyle())); 7324 EXPECT_EQ(" int a;\n" 7325 " void\n" 7326 " ffffff() {\n" 7327 " }", 7328 format(" int a;\n" 7329 "void ffffff() {}", 7330 11, 0, getLLVMStyleWithColumns(11))); 7331 7332 EXPECT_EQ(" void f() {\n" 7333 "#define A 1\n" 7334 " }", 7335 format(" void f() {\n" 7336 " #define A 1\n" // Format this line. 7337 " }", 7338 20, 0, getLLVMStyle())); 7339 EXPECT_EQ(" void f() {\n" 7340 " int i;\n" 7341 "#define A \\\n" 7342 " int i; \\\n" 7343 " int j;\n" 7344 " int k;\n" 7345 " }", 7346 format(" void f() {\n" 7347 " int i;\n" 7348 "#define A \\\n" 7349 " int i; \\\n" 7350 " int j;\n" 7351 " int k;\n" // Format this line. 7352 " }", 7353 67, 0, getLLVMStyle())); 7354 } 7355 7356 TEST_F(FormatTest, BreaksStringLiterals) { 7357 EXPECT_EQ("\"some text \"\n" 7358 "\"other\";", 7359 format("\"some text other\";", getLLVMStyleWithColumns(12))); 7360 EXPECT_EQ("\"some text \"\n" 7361 "\"other\";", 7362 format("\\\n\"some text other\";", getLLVMStyleWithColumns(12))); 7363 EXPECT_EQ( 7364 "#define A \\\n" 7365 " \"some \" \\\n" 7366 " \"text \" \\\n" 7367 " \"other\";", 7368 format("#define A \"some text other\";", getLLVMStyleWithColumns(12))); 7369 EXPECT_EQ( 7370 "#define A \\\n" 7371 " \"so \" \\\n" 7372 " \"text \" \\\n" 7373 " \"other\";", 7374 format("#define A \"so text other\";", getLLVMStyleWithColumns(12))); 7375 7376 EXPECT_EQ("\"some text\"", 7377 format("\"some text\"", getLLVMStyleWithColumns(1))); 7378 EXPECT_EQ("\"some text\"", 7379 format("\"some text\"", getLLVMStyleWithColumns(11))); 7380 EXPECT_EQ("\"some \"\n" 7381 "\"text\"", 7382 format("\"some text\"", getLLVMStyleWithColumns(10))); 7383 EXPECT_EQ("\"some \"\n" 7384 "\"text\"", 7385 format("\"some text\"", getLLVMStyleWithColumns(7))); 7386 EXPECT_EQ("\"some\"\n" 7387 "\" tex\"\n" 7388 "\"t\"", 7389 format("\"some text\"", getLLVMStyleWithColumns(6))); 7390 EXPECT_EQ("\"some\"\n" 7391 "\" tex\"\n" 7392 "\" and\"", 7393 format("\"some tex and\"", getLLVMStyleWithColumns(6))); 7394 EXPECT_EQ("\"some\"\n" 7395 "\"/tex\"\n" 7396 "\"/and\"", 7397 format("\"some/tex/and\"", getLLVMStyleWithColumns(6))); 7398 7399 EXPECT_EQ("variable =\n" 7400 " \"long string \"\n" 7401 " \"literal\";", 7402 format("variable = \"long string literal\";", 7403 getLLVMStyleWithColumns(20))); 7404 7405 EXPECT_EQ("variable = f(\n" 7406 " \"long string \"\n" 7407 " \"literal\",\n" 7408 " short,\n" 7409 " loooooooooooooooooooong);", 7410 format("variable = f(\"long string literal\", short, " 7411 "loooooooooooooooooooong);", 7412 getLLVMStyleWithColumns(20))); 7413 7414 EXPECT_EQ("f(g(\"long string \"\n" 7415 " \"literal\"),\n" 7416 " b);", 7417 format("f(g(\"long string literal\"), b);", 7418 getLLVMStyleWithColumns(20))); 7419 EXPECT_EQ("f(g(\"long string \"\n" 7420 " \"literal\",\n" 7421 " a),\n" 7422 " b);", 7423 format("f(g(\"long string literal\", a), b);", 7424 getLLVMStyleWithColumns(20))); 7425 EXPECT_EQ( 7426 "f(\"one two\".split(\n" 7427 " variable));", 7428 format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20))); 7429 EXPECT_EQ("f(\"one two three four five six \"\n" 7430 " \"seven\".split(\n" 7431 " really_looooong_variable));", 7432 format("f(\"one two three four five six seven\"." 7433 "split(really_looooong_variable));", 7434 getLLVMStyleWithColumns(33))); 7435 7436 EXPECT_EQ("f(\"some \"\n" 7437 " \"text\",\n" 7438 " other);", 7439 format("f(\"some text\", other);", getLLVMStyleWithColumns(10))); 7440 7441 // Only break as a last resort. 7442 verifyFormat( 7443 "aaaaaaaaaaaaaaaaaaaa(\n" 7444 " aaaaaaaaaaaaaaaaaaaa,\n" 7445 " aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));"); 7446 7447 EXPECT_EQ( 7448 "\"splitmea\"\n" 7449 "\"trandomp\"\n" 7450 "\"oint\"", 7451 format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10))); 7452 7453 EXPECT_EQ( 7454 "\"split/\"\n" 7455 "\"pathat/\"\n" 7456 "\"slashes\"", 7457 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 7458 7459 EXPECT_EQ( 7460 "\"split/\"\n" 7461 "\"pathat/\"\n" 7462 "\"slashes\"", 7463 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 7464 EXPECT_EQ("\"split at \"\n" 7465 "\"spaces/at/\"\n" 7466 "\"slashes.at.any$\"\n" 7467 "\"non-alphanumeric%\"\n" 7468 "\"1111111111characte\"\n" 7469 "\"rs\"", 7470 format("\"split at " 7471 "spaces/at/" 7472 "slashes.at." 7473 "any$non-" 7474 "alphanumeric%" 7475 "1111111111characte" 7476 "rs\"", 7477 getLLVMStyleWithColumns(20))); 7478 7479 // Verify that splitting the strings understands 7480 // Style::AlwaysBreakBeforeMultilineStrings. 7481 EXPECT_EQ("aaaaaaaaaaaa(aaaaaaaaaaaaa,\n" 7482 " \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n" 7483 " \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");", 7484 format("aaaaaaaaaaaa(aaaaaaaaaaaaa, \"aaaaaaaaaaaaaaaaaaaaaa " 7485 "aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa " 7486 "aaaaaaaaaaaaaaaaaaaaaa\");", 7487 getGoogleStyle())); 7488 EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7489 " \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";", 7490 format("return \"aaaaaaaaaaaaaaaaaaaaaa " 7491 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa " 7492 "aaaaaaaaaaaaaaaaaaaaaa\";", 7493 getGoogleStyle())); 7494 EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7495 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 7496 format("llvm::outs() << " 7497 "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa" 7498 "aaaaaaaaaaaaaaaaaaa\";")); 7499 EXPECT_EQ("ffff(\n" 7500 " {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7501 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 7502 format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa " 7503 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 7504 getGoogleStyle())); 7505 7506 FormatStyle AlignLeft = getLLVMStyleWithColumns(12); 7507 AlignLeft.AlignEscapedNewlinesLeft = true; 7508 EXPECT_EQ( 7509 "#define A \\\n" 7510 " \"some \" \\\n" 7511 " \"text \" \\\n" 7512 " \"other\";", 7513 format("#define A \"some text other\";", AlignLeft)); 7514 } 7515 7516 TEST_F(FormatTest, BreaksStringLiteralsWithTabs) { 7517 EXPECT_EQ( 7518 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 7519 "(\n" 7520 " \"x\t\");", 7521 format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 7522 "aaaaaaa(" 7523 "\"x\t\");")); 7524 } 7525 7526 TEST_F(FormatTest, BreaksWideAndNSStringLiterals) { 7527 EXPECT_EQ( 7528 "u8\"utf8 string \"\n" 7529 "u8\"literal\";", 7530 format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16))); 7531 EXPECT_EQ( 7532 "u\"utf16 string \"\n" 7533 "u\"literal\";", 7534 format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16))); 7535 EXPECT_EQ( 7536 "U\"utf32 string \"\n" 7537 "U\"literal\";", 7538 format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16))); 7539 EXPECT_EQ("L\"wide string \"\n" 7540 "L\"literal\";", 7541 format("L\"wide string literal\";", getGoogleStyleWithColumns(16))); 7542 EXPECT_EQ("@\"NSString \"\n" 7543 "@\"literal\";", 7544 format("@\"NSString literal\";", getGoogleStyleWithColumns(19))); 7545 7546 // This input makes clang-format try to split the incomplete unicode escape 7547 // sequence, which used to lead to a crasher. 7548 verifyNoCrash( 7549 "aaaaaaaaaaaaaaaaaaaa = L\"\\udff\"'; // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 7550 getLLVMStyleWithColumns(60)); 7551 } 7552 7553 TEST_F(FormatTest, DoesNotBreakRawStringLiterals) { 7554 FormatStyle Style = getGoogleStyleWithColumns(15); 7555 EXPECT_EQ("R\"x(raw literal)x\";", format("R\"x(raw literal)x\";", Style)); 7556 EXPECT_EQ("uR\"x(raw literal)x\";", format("uR\"x(raw literal)x\";", Style)); 7557 EXPECT_EQ("LR\"x(raw literal)x\";", format("LR\"x(raw literal)x\";", Style)); 7558 EXPECT_EQ("UR\"x(raw literal)x\";", format("UR\"x(raw literal)x\";", Style)); 7559 EXPECT_EQ("u8R\"x(raw literal)x\";", 7560 format("u8R\"x(raw literal)x\";", Style)); 7561 } 7562 7563 TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) { 7564 FormatStyle Style = getLLVMStyleWithColumns(20); 7565 EXPECT_EQ( 7566 "_T(\"aaaaaaaaaaaaaa\")\n" 7567 "_T(\"aaaaaaaaaaaaaa\")\n" 7568 "_T(\"aaaaaaaaaaaa\")", 7569 format(" _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style)); 7570 EXPECT_EQ("f(x, _T(\"aaaaaaaaa\")\n" 7571 " _T(\"aaaaaa\"),\n" 7572 " z);", 7573 format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style)); 7574 7575 // FIXME: Handle embedded spaces in one iteration. 7576 // EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n" 7577 // "_T(\"aaaaaaaaaaaaa\")\n" 7578 // "_T(\"aaaaaaaaaaaaa\")\n" 7579 // "_T(\"a\")", 7580 // format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 7581 // getLLVMStyleWithColumns(20))); 7582 EXPECT_EQ( 7583 "_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 7584 format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style)); 7585 } 7586 7587 TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) { 7588 EXPECT_EQ( 7589 "aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7590 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7591 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 7592 format("aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7593 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7594 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";")); 7595 } 7596 7597 TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) { 7598 EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);", 7599 format("f(g(R\"x(raw literal)x\", a), b);", getGoogleStyle())); 7600 EXPECT_EQ("fffffffffff(g(R\"x(\n" 7601 "multiline raw string literal xxxxxxxxxxxxxx\n" 7602 ")x\",\n" 7603 " a),\n" 7604 " b);", 7605 format("fffffffffff(g(R\"x(\n" 7606 "multiline raw string literal xxxxxxxxxxxxxx\n" 7607 ")x\", a), b);", 7608 getGoogleStyleWithColumns(20))); 7609 EXPECT_EQ("fffffffffff(\n" 7610 " g(R\"x(qqq\n" 7611 "multiline raw string literal xxxxxxxxxxxxxx\n" 7612 ")x\",\n" 7613 " a),\n" 7614 " b);", 7615 format("fffffffffff(g(R\"x(qqq\n" 7616 "multiline raw string literal xxxxxxxxxxxxxx\n" 7617 ")x\", a), b);", 7618 getGoogleStyleWithColumns(20))); 7619 7620 EXPECT_EQ("fffffffffff(R\"x(\n" 7621 "multiline raw string literal xxxxxxxxxxxxxx\n" 7622 ")x\");", 7623 format("fffffffffff(R\"x(\n" 7624 "multiline raw string literal xxxxxxxxxxxxxx\n" 7625 ")x\");", 7626 getGoogleStyleWithColumns(20))); 7627 EXPECT_EQ("fffffffffff(R\"x(\n" 7628 "multiline raw string literal xxxxxxxxxxxxxx\n" 7629 ")x\" + bbbbbb);", 7630 format("fffffffffff(R\"x(\n" 7631 "multiline raw string literal xxxxxxxxxxxxxx\n" 7632 ")x\" + bbbbbb);", 7633 getGoogleStyleWithColumns(20))); 7634 EXPECT_EQ("fffffffffff(\n" 7635 " R\"x(\n" 7636 "multiline raw string literal xxxxxxxxxxxxxx\n" 7637 ")x\" +\n" 7638 " bbbbbb);", 7639 format("fffffffffff(\n" 7640 " R\"x(\n" 7641 "multiline raw string literal xxxxxxxxxxxxxx\n" 7642 ")x\" + bbbbbb);", 7643 getGoogleStyleWithColumns(20))); 7644 } 7645 7646 TEST_F(FormatTest, SkipsUnknownStringLiterals) { 7647 verifyFormat("string a = \"unterminated;"); 7648 EXPECT_EQ("function(\"unterminated,\n" 7649 " OtherParameter);", 7650 format("function( \"unterminated,\n" 7651 " OtherParameter);")); 7652 } 7653 7654 TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) { 7655 FormatStyle Style = getLLVMStyle(); 7656 Style.Standard = FormatStyle::LS_Cpp03; 7657 EXPECT_EQ("#define x(_a) printf(\"foo\" _a);", 7658 format("#define x(_a) printf(\"foo\"_a);", Style)); 7659 } 7660 7661 TEST_F(FormatTest, UnderstandsCpp1y) { 7662 verifyFormat("int bi{1'000'000};"); 7663 } 7664 7665 TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) { 7666 EXPECT_EQ("someFunction(\"aaabbbcccd\"\n" 7667 " \"ddeeefff\");", 7668 format("someFunction(\"aaabbbcccdddeeefff\");", 7669 getLLVMStyleWithColumns(25))); 7670 EXPECT_EQ("someFunction1234567890(\n" 7671 " \"aaabbbcccdddeeefff\");", 7672 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7673 getLLVMStyleWithColumns(26))); 7674 EXPECT_EQ("someFunction1234567890(\n" 7675 " \"aaabbbcccdddeeeff\"\n" 7676 " \"f\");", 7677 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7678 getLLVMStyleWithColumns(25))); 7679 EXPECT_EQ("someFunction1234567890(\n" 7680 " \"aaabbbcccdddeeeff\"\n" 7681 " \"f\");", 7682 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7683 getLLVMStyleWithColumns(24))); 7684 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 7685 " \"ddde \"\n" 7686 " \"efff\");", 7687 format("someFunction(\"aaabbbcc ddde efff\");", 7688 getLLVMStyleWithColumns(25))); 7689 EXPECT_EQ("someFunction(\"aaabbbccc \"\n" 7690 " \"ddeeefff\");", 7691 format("someFunction(\"aaabbbccc ddeeefff\");", 7692 getLLVMStyleWithColumns(25))); 7693 EXPECT_EQ("someFunction1234567890(\n" 7694 " \"aaabb \"\n" 7695 " \"cccdddeeefff\");", 7696 format("someFunction1234567890(\"aaabb cccdddeeefff\");", 7697 getLLVMStyleWithColumns(25))); 7698 EXPECT_EQ("#define A \\\n" 7699 " string s = \\\n" 7700 " \"123456789\" \\\n" 7701 " \"0\"; \\\n" 7702 " int i;", 7703 format("#define A string s = \"1234567890\"; int i;", 7704 getLLVMStyleWithColumns(20))); 7705 // FIXME: Put additional penalties on breaking at non-whitespace locations. 7706 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 7707 " \"dddeeeff\"\n" 7708 " \"f\");", 7709 format("someFunction(\"aaabbbcc dddeeefff\");", 7710 getLLVMStyleWithColumns(25))); 7711 } 7712 7713 TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) { 7714 EXPECT_EQ("\"\\a\"", 7715 format("\"\\a\"", getLLVMStyleWithColumns(3))); 7716 EXPECT_EQ("\"\\\"", 7717 format("\"\\\"", getLLVMStyleWithColumns(2))); 7718 EXPECT_EQ("\"test\"\n" 7719 "\"\\n\"", 7720 format("\"test\\n\"", getLLVMStyleWithColumns(7))); 7721 EXPECT_EQ("\"tes\\\\\"\n" 7722 "\"n\"", 7723 format("\"tes\\\\n\"", getLLVMStyleWithColumns(7))); 7724 EXPECT_EQ("\"\\\\\\\\\"\n" 7725 "\"\\n\"", 7726 format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7))); 7727 EXPECT_EQ("\"\\uff01\"", 7728 format("\"\\uff01\"", getLLVMStyleWithColumns(7))); 7729 EXPECT_EQ("\"\\uff01\"\n" 7730 "\"test\"", 7731 format("\"\\uff01test\"", getLLVMStyleWithColumns(8))); 7732 EXPECT_EQ("\"\\Uff01ff02\"", 7733 format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11))); 7734 EXPECT_EQ("\"\\x000000000001\"\n" 7735 "\"next\"", 7736 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16))); 7737 EXPECT_EQ("\"\\x000000000001next\"", 7738 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15))); 7739 EXPECT_EQ("\"\\x000000000001\"", 7740 format("\"\\x000000000001\"", getLLVMStyleWithColumns(7))); 7741 EXPECT_EQ("\"test\"\n" 7742 "\"\\000000\"\n" 7743 "\"000001\"", 7744 format("\"test\\000000000001\"", getLLVMStyleWithColumns(9))); 7745 EXPECT_EQ("\"test\\000\"\n" 7746 "\"00000000\"\n" 7747 "\"1\"", 7748 format("\"test\\000000000001\"", getLLVMStyleWithColumns(10))); 7749 } 7750 7751 TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) { 7752 verifyFormat("void f() {\n" 7753 " return g() {}\n" 7754 " void h() {}"); 7755 verifyFormat("int a[] = {void forgot_closing_brace(){f();\n" 7756 "g();\n" 7757 "}"); 7758 } 7759 7760 TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) { 7761 verifyFormat( 7762 "void f() { return C{param1, param2}.SomeCall(param1, param2); }"); 7763 } 7764 7765 TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) { 7766 verifyFormat("class X {\n" 7767 " void f() {\n" 7768 " }\n" 7769 "};", 7770 getLLVMStyleWithColumns(12)); 7771 } 7772 7773 TEST_F(FormatTest, ConfigurableIndentWidth) { 7774 FormatStyle EightIndent = getLLVMStyleWithColumns(18); 7775 EightIndent.IndentWidth = 8; 7776 EightIndent.ContinuationIndentWidth = 8; 7777 verifyFormat("void f() {\n" 7778 " someFunction();\n" 7779 " if (true) {\n" 7780 " f();\n" 7781 " }\n" 7782 "}", 7783 EightIndent); 7784 verifyFormat("class X {\n" 7785 " void f() {\n" 7786 " }\n" 7787 "};", 7788 EightIndent); 7789 verifyFormat("int x[] = {\n" 7790 " call(),\n" 7791 " call()};", 7792 EightIndent); 7793 } 7794 7795 TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) { 7796 verifyFormat("double\n" 7797 "f();", 7798 getLLVMStyleWithColumns(8)); 7799 } 7800 7801 TEST_F(FormatTest, ConfigurableUseOfTab) { 7802 FormatStyle Tab = getLLVMStyleWithColumns(42); 7803 Tab.IndentWidth = 8; 7804 Tab.UseTab = FormatStyle::UT_Always; 7805 Tab.AlignEscapedNewlinesLeft = true; 7806 7807 EXPECT_EQ("if (aaaaaaaa && // q\n" 7808 " bb)\t\t// w\n" 7809 "\t;", 7810 format("if (aaaaaaaa &&// q\n" 7811 "bb)// w\n" 7812 ";", 7813 Tab)); 7814 EXPECT_EQ("if (aaa && bbb) // w\n" 7815 "\t;", 7816 format("if(aaa&&bbb)// w\n" 7817 ";", 7818 Tab)); 7819 7820 verifyFormat("class X {\n" 7821 "\tvoid f() {\n" 7822 "\t\tsomeFunction(parameter1,\n" 7823 "\t\t\t parameter2);\n" 7824 "\t}\n" 7825 "};", 7826 Tab); 7827 verifyFormat("#define A \\\n" 7828 "\tvoid f() { \\\n" 7829 "\t\tsomeFunction( \\\n" 7830 "\t\t parameter1, \\\n" 7831 "\t\t parameter2); \\\n" 7832 "\t}", 7833 Tab); 7834 EXPECT_EQ("void f() {\n" 7835 "\tf();\n" 7836 "\tg();\n" 7837 "}", 7838 format("void f() {\n" 7839 "\tf();\n" 7840 "\tg();\n" 7841 "}", 7842 0, 0, Tab)); 7843 EXPECT_EQ("void f() {\n" 7844 "\tf();\n" 7845 "\tg();\n" 7846 "}", 7847 format("void f() {\n" 7848 "\tf();\n" 7849 "\tg();\n" 7850 "}", 7851 16, 0, Tab)); 7852 EXPECT_EQ("void f() {\n" 7853 " \tf();\n" 7854 "\tg();\n" 7855 "}", 7856 format("void f() {\n" 7857 " \tf();\n" 7858 " \tg();\n" 7859 "}", 7860 21, 0, Tab)); 7861 7862 Tab.TabWidth = 4; 7863 Tab.IndentWidth = 8; 7864 verifyFormat("class TabWidth4Indent8 {\n" 7865 "\t\tvoid f() {\n" 7866 "\t\t\t\tsomeFunction(parameter1,\n" 7867 "\t\t\t\t\t\t\t parameter2);\n" 7868 "\t\t}\n" 7869 "};", 7870 Tab); 7871 7872 Tab.TabWidth = 4; 7873 Tab.IndentWidth = 4; 7874 verifyFormat("class TabWidth4Indent4 {\n" 7875 "\tvoid f() {\n" 7876 "\t\tsomeFunction(parameter1,\n" 7877 "\t\t\t\t\t parameter2);\n" 7878 "\t}\n" 7879 "};", 7880 Tab); 7881 7882 Tab.TabWidth = 8; 7883 Tab.IndentWidth = 4; 7884 verifyFormat("class TabWidth8Indent4 {\n" 7885 " void f() {\n" 7886 "\tsomeFunction(parameter1,\n" 7887 "\t\t parameter2);\n" 7888 " }\n" 7889 "};", 7890 Tab); 7891 7892 Tab.TabWidth = 8; 7893 Tab.IndentWidth = 8; 7894 EXPECT_EQ("/*\n" 7895 "\t a\t\tcomment\n" 7896 "\t in multiple lines\n" 7897 " */", 7898 format(" /*\t \t \n" 7899 " \t \t a\t\tcomment\t \t\n" 7900 " \t \t in multiple lines\t\n" 7901 " \t */", 7902 Tab)); 7903 7904 Tab.UseTab = FormatStyle::UT_ForIndentation; 7905 verifyFormat("{\n" 7906 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7907 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7908 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7909 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7910 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7911 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7912 "};", 7913 Tab); 7914 verifyFormat("enum A {\n" 7915 "\ta1, // Force multiple lines\n" 7916 "\ta2,\n" 7917 "\ta3\n" 7918 "};", 7919 Tab); 7920 EXPECT_EQ("if (aaaaaaaa && // q\n" 7921 " bb) // w\n" 7922 "\t;", 7923 format("if (aaaaaaaa &&// q\n" 7924 "bb)// w\n" 7925 ";", 7926 Tab)); 7927 verifyFormat("class X {\n" 7928 "\tvoid f() {\n" 7929 "\t\tsomeFunction(parameter1,\n" 7930 "\t\t parameter2);\n" 7931 "\t}\n" 7932 "};", 7933 Tab); 7934 verifyFormat("{\n" 7935 "\tQ({\n" 7936 "\t\tint a;\n" 7937 "\t\tsomeFunction(aaaaaaaa,\n" 7938 "\t\t bbbbbbb);\n" 7939 "\t}, p);\n" 7940 "}", 7941 Tab); 7942 EXPECT_EQ("{\n" 7943 "\t/* aaaa\n" 7944 "\t bbbb */\n" 7945 "}", 7946 format("{\n" 7947 "/* aaaa\n" 7948 " bbbb */\n" 7949 "}", 7950 Tab)); 7951 EXPECT_EQ("{\n" 7952 "\t/*\n" 7953 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 7954 "\t bbbbbbbbbbbbb\n" 7955 "\t*/\n" 7956 "}", 7957 format("{\n" 7958 "/*\n" 7959 " aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 7960 "*/\n" 7961 "}", 7962 Tab)); 7963 EXPECT_EQ("{\n" 7964 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 7965 "\t// bbbbbbbbbbbbb\n" 7966 "}", 7967 format("{\n" 7968 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 7969 "}", 7970 Tab)); 7971 EXPECT_EQ("{\n" 7972 "\t/*\n" 7973 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 7974 "\t bbbbbbbbbbbbb\n" 7975 "\t*/\n" 7976 "}", 7977 format("{\n" 7978 "\t/*\n" 7979 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 7980 "\t*/\n" 7981 "}", 7982 Tab)); 7983 EXPECT_EQ("{\n" 7984 "\t/*\n" 7985 "\n" 7986 "\t*/\n" 7987 "}", 7988 format("{\n" 7989 "\t/*\n" 7990 "\n" 7991 "\t*/\n" 7992 "}", 7993 Tab)); 7994 EXPECT_EQ("{\n" 7995 "\t/*\n" 7996 " asdf\n" 7997 "\t*/\n" 7998 "}", 7999 format("{\n" 8000 "\t/*\n" 8001 " asdf\n" 8002 "\t*/\n" 8003 "}", 8004 Tab)); 8005 8006 Tab.UseTab = FormatStyle::UT_Never; 8007 EXPECT_EQ("/*\n" 8008 " a\t\tcomment\n" 8009 " in multiple lines\n" 8010 " */", 8011 format(" /*\t \t \n" 8012 " \t \t a\t\tcomment\t \t\n" 8013 " \t \t in multiple lines\t\n" 8014 " \t */", 8015 Tab)); 8016 EXPECT_EQ("/* some\n" 8017 " comment */", 8018 format(" \t \t /* some\n" 8019 " \t \t comment */", 8020 Tab)); 8021 EXPECT_EQ("int a; /* some\n" 8022 " comment */", 8023 format(" \t \t int a; /* some\n" 8024 " \t \t comment */", 8025 Tab)); 8026 8027 EXPECT_EQ("int a; /* some\n" 8028 "comment */", 8029 format(" \t \t int\ta; /* some\n" 8030 " \t \t comment */", 8031 Tab)); 8032 EXPECT_EQ("f(\"\t\t\"); /* some\n" 8033 " comment */", 8034 format(" \t \t f(\"\t\t\"); /* some\n" 8035 " \t \t comment */", 8036 Tab)); 8037 EXPECT_EQ("{\n" 8038 " /*\n" 8039 " * Comment\n" 8040 " */\n" 8041 " int i;\n" 8042 "}", 8043 format("{\n" 8044 "\t/*\n" 8045 "\t * Comment\n" 8046 "\t */\n" 8047 "\t int i;\n" 8048 "}")); 8049 } 8050 8051 TEST_F(FormatTest, CalculatesOriginalColumn) { 8052 EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8053 "q\"; /* some\n" 8054 " comment */", 8055 format(" \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8056 "q\"; /* some\n" 8057 " comment */", 8058 getLLVMStyle())); 8059 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 8060 "/* some\n" 8061 " comment */", 8062 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 8063 " /* some\n" 8064 " comment */", 8065 getLLVMStyle())); 8066 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8067 "qqq\n" 8068 "/* some\n" 8069 " comment */", 8070 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8071 "qqq\n" 8072 " /* some\n" 8073 " comment */", 8074 getLLVMStyle())); 8075 EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8076 "wwww; /* some\n" 8077 " comment */", 8078 format(" inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8079 "wwww; /* some\n" 8080 " comment */", 8081 getLLVMStyle())); 8082 } 8083 8084 TEST_F(FormatTest, ConfigurableSpaceBeforeParens) { 8085 FormatStyle NoSpace = getLLVMStyle(); 8086 NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never; 8087 8088 verifyFormat("while(true)\n" 8089 " continue;", NoSpace); 8090 verifyFormat("for(;;)\n" 8091 " continue;", NoSpace); 8092 verifyFormat("if(true)\n" 8093 " f();\n" 8094 "else if(true)\n" 8095 " f();", NoSpace); 8096 verifyFormat("do {\n" 8097 " do_something();\n" 8098 "} while(something());", NoSpace); 8099 verifyFormat("switch(x) {\n" 8100 "default:\n" 8101 " break;\n" 8102 "}", NoSpace); 8103 verifyFormat("auto i = std::make_unique<int>(5);", NoSpace); 8104 verifyFormat("size_t x = sizeof(x);", NoSpace); 8105 verifyFormat("auto f(int x) -> decltype(x);", NoSpace); 8106 verifyFormat("int f(T x) noexcept(x.create());", NoSpace); 8107 verifyFormat("alignas(128) char a[128];", NoSpace); 8108 verifyFormat("size_t x = alignof(MyType);", NoSpace); 8109 verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace); 8110 verifyFormat("int f() throw(Deprecated);", NoSpace); 8111 8112 FormatStyle Space = getLLVMStyle(); 8113 Space.SpaceBeforeParens = FormatStyle::SBPO_Always; 8114 8115 verifyFormat("int f ();", Space); 8116 verifyFormat("void f (int a, T b) {\n" 8117 " while (true)\n" 8118 " continue;\n" 8119 "}", 8120 Space); 8121 verifyFormat("if (true)\n" 8122 " f ();\n" 8123 "else if (true)\n" 8124 " f ();", 8125 Space); 8126 verifyFormat("do {\n" 8127 " do_something ();\n" 8128 "} while (something ());", 8129 Space); 8130 verifyFormat("switch (x) {\n" 8131 "default:\n" 8132 " break;\n" 8133 "}", 8134 Space); 8135 verifyFormat("A::A () : a (1) {}", Space); 8136 verifyFormat("void f () __attribute__ ((asdf));", Space); 8137 verifyFormat("*(&a + 1);\n" 8138 "&((&a)[1]);\n" 8139 "a[(b + c) * d];\n" 8140 "(((a + 1) * 2) + 3) * 4;", 8141 Space); 8142 verifyFormat("#define A(x) x", Space); 8143 verifyFormat("#define A (x) x", Space); 8144 verifyFormat("#if defined(x)\n" 8145 "#endif", 8146 Space); 8147 verifyFormat("auto i = std::make_unique<int> (5);", Space); 8148 verifyFormat("size_t x = sizeof (x);", Space); 8149 verifyFormat("auto f (int x) -> decltype (x);", Space); 8150 verifyFormat("int f (T x) noexcept (x.create ());", Space); 8151 verifyFormat("alignas (128) char a[128];", Space); 8152 verifyFormat("size_t x = alignof (MyType);", Space); 8153 verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space); 8154 verifyFormat("int f () throw (Deprecated);", Space); 8155 } 8156 8157 TEST_F(FormatTest, ConfigurableSpacesInParentheses) { 8158 FormatStyle Spaces = getLLVMStyle(); 8159 8160 Spaces.SpacesInParentheses = true; 8161 verifyFormat("call( x, y, z );", Spaces); 8162 verifyFormat("while ( (bool)1 )\n" 8163 " continue;", Spaces); 8164 verifyFormat("for ( ;; )\n" 8165 " continue;", Spaces); 8166 verifyFormat("if ( true )\n" 8167 " f();\n" 8168 "else if ( true )\n" 8169 " f();", Spaces); 8170 verifyFormat("do {\n" 8171 " do_something( (int)i );\n" 8172 "} while ( something() );", Spaces); 8173 verifyFormat("switch ( x ) {\n" 8174 "default:\n" 8175 " break;\n" 8176 "}", Spaces); 8177 8178 Spaces.SpacesInParentheses = false; 8179 Spaces.SpacesInCStyleCastParentheses = true; 8180 verifyFormat("Type *A = ( Type * )P;", Spaces); 8181 verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces); 8182 verifyFormat("x = ( int32 )y;", Spaces); 8183 verifyFormat("int a = ( int )(2.0f);", Spaces); 8184 verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces); 8185 verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces); 8186 verifyFormat("#define x (( int )-1)", Spaces); 8187 8188 Spaces.SpacesInParentheses = false; 8189 Spaces.SpaceInEmptyParentheses = true; 8190 verifyFormat("call(x, y, z);", Spaces); 8191 verifyFormat("call( )", Spaces); 8192 8193 // Run the first set of tests again with 8194 // Spaces.SpacesInParentheses = false, 8195 // Spaces.SpaceInEmptyParentheses = true and 8196 // Spaces.SpacesInCStyleCastParentheses = true 8197 Spaces.SpacesInParentheses = false, 8198 Spaces.SpaceInEmptyParentheses = true; 8199 Spaces.SpacesInCStyleCastParentheses = true; 8200 verifyFormat("call(x, y, z);", Spaces); 8201 verifyFormat("while (( bool )1)\n" 8202 " continue;", Spaces); 8203 verifyFormat("for (;;)\n" 8204 " continue;", Spaces); 8205 verifyFormat("if (true)\n" 8206 " f( );\n" 8207 "else if (true)\n" 8208 " f( );", Spaces); 8209 verifyFormat("do {\n" 8210 " do_something(( int )i);\n" 8211 "} while (something( ));", Spaces); 8212 verifyFormat("switch (x) {\n" 8213 "default:\n" 8214 " break;\n" 8215 "}", Spaces); 8216 8217 Spaces.SpaceAfterCStyleCast = true; 8218 verifyFormat("call(x, y, z);", Spaces); 8219 verifyFormat("while (( bool ) 1)\n" 8220 " continue;", 8221 Spaces); 8222 verifyFormat("for (;;)\n" 8223 " continue;", 8224 Spaces); 8225 verifyFormat("if (true)\n" 8226 " f( );\n" 8227 "else if (true)\n" 8228 " f( );", 8229 Spaces); 8230 verifyFormat("do {\n" 8231 " do_something(( int ) i);\n" 8232 "} while (something( ));", 8233 Spaces); 8234 verifyFormat("switch (x) {\n" 8235 "default:\n" 8236 " break;\n" 8237 "}", 8238 Spaces); 8239 Spaces.SpacesInCStyleCastParentheses = false; 8240 Spaces.SpaceAfterCStyleCast = true; 8241 verifyFormat("while ((bool) 1)\n" 8242 " continue;", 8243 Spaces); 8244 verifyFormat("do {\n" 8245 " do_something((int) i);\n" 8246 "} while (something( ));", 8247 Spaces); 8248 } 8249 8250 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) { 8251 verifyFormat("int a[5];"); 8252 verifyFormat("a[3] += 42;"); 8253 8254 FormatStyle Spaces = getLLVMStyle(); 8255 Spaces.SpacesInSquareBrackets = true; 8256 // Lambdas unchanged. 8257 verifyFormat("int c = []() -> int { return 2; }();\n", Spaces); 8258 verifyFormat("return [i, args...] {};", Spaces); 8259 8260 // Not lambdas. 8261 verifyFormat("int a[ 5 ];", Spaces); 8262 verifyFormat("a[ 3 ] += 42;", Spaces); 8263 verifyFormat("constexpr char hello[]{\"hello\"};", Spaces); 8264 verifyFormat("double &operator[](int i) { return 0; }\n" 8265 "int i;", 8266 Spaces); 8267 verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces); 8268 verifyFormat("int i = a[ a ][ a ]->f();", Spaces); 8269 verifyFormat("int i = (*b)[ a ]->f();", Spaces); 8270 } 8271 8272 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) { 8273 verifyFormat("int a = 5;"); 8274 verifyFormat("a += 42;"); 8275 verifyFormat("a or_eq 8;"); 8276 8277 FormatStyle Spaces = getLLVMStyle(); 8278 Spaces.SpaceBeforeAssignmentOperators = false; 8279 verifyFormat("int a= 5;", Spaces); 8280 verifyFormat("a+= 42;", Spaces); 8281 verifyFormat("a or_eq 8;", Spaces); 8282 } 8283 8284 TEST_F(FormatTest, LinuxBraceBreaking) { 8285 FormatStyle LinuxBraceStyle = getLLVMStyle(); 8286 LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux; 8287 verifyFormat("namespace a\n" 8288 "{\n" 8289 "class A\n" 8290 "{\n" 8291 " void f()\n" 8292 " {\n" 8293 " if (true) {\n" 8294 " a();\n" 8295 " b();\n" 8296 " }\n" 8297 " }\n" 8298 " void g() { return; }\n" 8299 "};\n" 8300 "struct B {\n" 8301 " int x;\n" 8302 "};\n" 8303 "}\n", 8304 LinuxBraceStyle); 8305 verifyFormat("enum X {\n" 8306 " Y = 0,\n" 8307 "}\n", 8308 LinuxBraceStyle); 8309 verifyFormat("struct S {\n" 8310 " int Type;\n" 8311 " union {\n" 8312 " int x;\n" 8313 " double y;\n" 8314 " } Value;\n" 8315 " class C\n" 8316 " {\n" 8317 " MyFavoriteType Value;\n" 8318 " } Class;\n" 8319 "}\n", 8320 LinuxBraceStyle); 8321 } 8322 8323 TEST_F(FormatTest, StroustrupBraceBreaking) { 8324 FormatStyle StroustrupBraceStyle = getLLVMStyle(); 8325 StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 8326 verifyFormat("namespace a {\n" 8327 "class A {\n" 8328 " void f()\n" 8329 " {\n" 8330 " if (true) {\n" 8331 " a();\n" 8332 " b();\n" 8333 " }\n" 8334 " }\n" 8335 " void g() { return; }\n" 8336 "};\n" 8337 "struct B {\n" 8338 " int x;\n" 8339 "};\n" 8340 "}\n", 8341 StroustrupBraceStyle); 8342 8343 verifyFormat("void foo()\n" 8344 "{\n" 8345 " if (a) {\n" 8346 " a();\n" 8347 " }\n" 8348 " else {\n" 8349 " b();\n" 8350 " }\n" 8351 "}\n", 8352 StroustrupBraceStyle); 8353 8354 verifyFormat("#ifdef _DEBUG\n" 8355 "int foo(int i = 0)\n" 8356 "#else\n" 8357 "int foo(int i = 5)\n" 8358 "#endif\n" 8359 "{\n" 8360 " return i;\n" 8361 "}", 8362 StroustrupBraceStyle); 8363 8364 verifyFormat("void foo() {}\n" 8365 "void bar()\n" 8366 "#ifdef _DEBUG\n" 8367 "{\n" 8368 " foo();\n" 8369 "}\n" 8370 "#else\n" 8371 "{\n" 8372 "}\n" 8373 "#endif", 8374 StroustrupBraceStyle); 8375 8376 verifyFormat("void foobar() { int i = 5; }\n" 8377 "#ifdef _DEBUG\n" 8378 "void bar() {}\n" 8379 "#else\n" 8380 "void bar() { foobar(); }\n" 8381 "#endif", 8382 StroustrupBraceStyle); 8383 } 8384 8385 TEST_F(FormatTest, AllmanBraceBreaking) { 8386 FormatStyle AllmanBraceStyle = getLLVMStyle(); 8387 AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman; 8388 verifyFormat("namespace a\n" 8389 "{\n" 8390 "class A\n" 8391 "{\n" 8392 " void f()\n" 8393 " {\n" 8394 " if (true)\n" 8395 " {\n" 8396 " a();\n" 8397 " b();\n" 8398 " }\n" 8399 " }\n" 8400 " void g() { return; }\n" 8401 "};\n" 8402 "struct B\n" 8403 "{\n" 8404 " int x;\n" 8405 "};\n" 8406 "}", 8407 AllmanBraceStyle); 8408 8409 verifyFormat("void f()\n" 8410 "{\n" 8411 " if (true)\n" 8412 " {\n" 8413 " a();\n" 8414 " }\n" 8415 " else if (false)\n" 8416 " {\n" 8417 " b();\n" 8418 " }\n" 8419 " else\n" 8420 " {\n" 8421 " c();\n" 8422 " }\n" 8423 "}\n", 8424 AllmanBraceStyle); 8425 8426 verifyFormat("void f()\n" 8427 "{\n" 8428 " for (int i = 0; i < 10; ++i)\n" 8429 " {\n" 8430 " a();\n" 8431 " }\n" 8432 " while (false)\n" 8433 " {\n" 8434 " b();\n" 8435 " }\n" 8436 " do\n" 8437 " {\n" 8438 " c();\n" 8439 " } while (false)\n" 8440 "}\n", 8441 AllmanBraceStyle); 8442 8443 verifyFormat("void f(int a)\n" 8444 "{\n" 8445 " switch (a)\n" 8446 " {\n" 8447 " case 0:\n" 8448 " break;\n" 8449 " case 1:\n" 8450 " {\n" 8451 " break;\n" 8452 " }\n" 8453 " case 2:\n" 8454 " {\n" 8455 " }\n" 8456 " break;\n" 8457 " default:\n" 8458 " break;\n" 8459 " }\n" 8460 "}\n", 8461 AllmanBraceStyle); 8462 8463 verifyFormat("enum X\n" 8464 "{\n" 8465 " Y = 0,\n" 8466 "}\n", 8467 AllmanBraceStyle); 8468 verifyFormat("enum X\n" 8469 "{\n" 8470 " Y = 0\n" 8471 "}\n", 8472 AllmanBraceStyle); 8473 8474 verifyFormat("@interface BSApplicationController ()\n" 8475 "{\n" 8476 "@private\n" 8477 " id _extraIvar;\n" 8478 "}\n" 8479 "@end\n", 8480 AllmanBraceStyle); 8481 8482 verifyFormat("#ifdef _DEBUG\n" 8483 "int foo(int i = 0)\n" 8484 "#else\n" 8485 "int foo(int i = 5)\n" 8486 "#endif\n" 8487 "{\n" 8488 " return i;\n" 8489 "}", 8490 AllmanBraceStyle); 8491 8492 verifyFormat("void foo() {}\n" 8493 "void bar()\n" 8494 "#ifdef _DEBUG\n" 8495 "{\n" 8496 " foo();\n" 8497 "}\n" 8498 "#else\n" 8499 "{\n" 8500 "}\n" 8501 "#endif", 8502 AllmanBraceStyle); 8503 8504 verifyFormat("void foobar() { int i = 5; }\n" 8505 "#ifdef _DEBUG\n" 8506 "void bar() {}\n" 8507 "#else\n" 8508 "void bar() { foobar(); }\n" 8509 "#endif", 8510 AllmanBraceStyle); 8511 8512 // This shouldn't affect ObjC blocks.. 8513 verifyFormat("[self doSomeThingWithACompletionHandler:^{\n" 8514 " // ...\n" 8515 " int i;\n" 8516 "}];", 8517 AllmanBraceStyle); 8518 verifyFormat("void (^block)(void) = ^{\n" 8519 " // ...\n" 8520 " int i;\n" 8521 "};", 8522 AllmanBraceStyle); 8523 // .. or dict literals. 8524 verifyFormat("void f()\n" 8525 "{\n" 8526 " [object someMethod:@{ @\"a\" : @\"b\" }];\n" 8527 "}", 8528 AllmanBraceStyle); 8529 verifyFormat("int f()\n" 8530 "{ // comment\n" 8531 " return 42;\n" 8532 "}", 8533 AllmanBraceStyle); 8534 8535 AllmanBraceStyle.ColumnLimit = 19; 8536 verifyFormat("void f() { int i; }", AllmanBraceStyle); 8537 AllmanBraceStyle.ColumnLimit = 18; 8538 verifyFormat("void f()\n" 8539 "{\n" 8540 " int i;\n" 8541 "}", 8542 AllmanBraceStyle); 8543 AllmanBraceStyle.ColumnLimit = 80; 8544 8545 FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle; 8546 BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine = true; 8547 BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true; 8548 verifyFormat("void f(bool b)\n" 8549 "{\n" 8550 " if (b)\n" 8551 " {\n" 8552 " return;\n" 8553 " }\n" 8554 "}\n", 8555 BreakBeforeBraceShortIfs); 8556 verifyFormat("void f(bool b)\n" 8557 "{\n" 8558 " if (b) return;\n" 8559 "}\n", 8560 BreakBeforeBraceShortIfs); 8561 verifyFormat("void f(bool b)\n" 8562 "{\n" 8563 " while (b)\n" 8564 " {\n" 8565 " return;\n" 8566 " }\n" 8567 "}\n", 8568 BreakBeforeBraceShortIfs); 8569 } 8570 8571 TEST_F(FormatTest, GNUBraceBreaking) { 8572 FormatStyle GNUBraceStyle = getLLVMStyle(); 8573 GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU; 8574 verifyFormat("namespace a\n" 8575 "{\n" 8576 "class A\n" 8577 "{\n" 8578 " void f()\n" 8579 " {\n" 8580 " int a;\n" 8581 " {\n" 8582 " int b;\n" 8583 " }\n" 8584 " if (true)\n" 8585 " {\n" 8586 " a();\n" 8587 " b();\n" 8588 " }\n" 8589 " }\n" 8590 " void g() { return; }\n" 8591 "}\n" 8592 "}", 8593 GNUBraceStyle); 8594 8595 verifyFormat("void f()\n" 8596 "{\n" 8597 " if (true)\n" 8598 " {\n" 8599 " a();\n" 8600 " }\n" 8601 " else if (false)\n" 8602 " {\n" 8603 " b();\n" 8604 " }\n" 8605 " else\n" 8606 " {\n" 8607 " c();\n" 8608 " }\n" 8609 "}\n", 8610 GNUBraceStyle); 8611 8612 verifyFormat("void f()\n" 8613 "{\n" 8614 " for (int i = 0; i < 10; ++i)\n" 8615 " {\n" 8616 " a();\n" 8617 " }\n" 8618 " while (false)\n" 8619 " {\n" 8620 " b();\n" 8621 " }\n" 8622 " do\n" 8623 " {\n" 8624 " c();\n" 8625 " }\n" 8626 " while (false);\n" 8627 "}\n", 8628 GNUBraceStyle); 8629 8630 verifyFormat("void f(int a)\n" 8631 "{\n" 8632 " switch (a)\n" 8633 " {\n" 8634 " case 0:\n" 8635 " break;\n" 8636 " case 1:\n" 8637 " {\n" 8638 " break;\n" 8639 " }\n" 8640 " case 2:\n" 8641 " {\n" 8642 " }\n" 8643 " break;\n" 8644 " default:\n" 8645 " break;\n" 8646 " }\n" 8647 "}\n", 8648 GNUBraceStyle); 8649 8650 verifyFormat("enum X\n" 8651 "{\n" 8652 " Y = 0,\n" 8653 "}\n", 8654 GNUBraceStyle); 8655 8656 verifyFormat("@interface BSApplicationController ()\n" 8657 "{\n" 8658 "@private\n" 8659 " id _extraIvar;\n" 8660 "}\n" 8661 "@end\n", 8662 GNUBraceStyle); 8663 8664 verifyFormat("#ifdef _DEBUG\n" 8665 "int foo(int i = 0)\n" 8666 "#else\n" 8667 "int foo(int i = 5)\n" 8668 "#endif\n" 8669 "{\n" 8670 " return i;\n" 8671 "}", 8672 GNUBraceStyle); 8673 8674 verifyFormat("void foo() {}\n" 8675 "void bar()\n" 8676 "#ifdef _DEBUG\n" 8677 "{\n" 8678 " foo();\n" 8679 "}\n" 8680 "#else\n" 8681 "{\n" 8682 "}\n" 8683 "#endif", 8684 GNUBraceStyle); 8685 8686 verifyFormat("void foobar() { int i = 5; }\n" 8687 "#ifdef _DEBUG\n" 8688 "void bar() {}\n" 8689 "#else\n" 8690 "void bar() { foobar(); }\n" 8691 "#endif", 8692 GNUBraceStyle); 8693 } 8694 TEST_F(FormatTest, CatchExceptionReferenceBinding) { 8695 verifyFormat("void f() {\n" 8696 " try {\n" 8697 " } catch (const Exception &e) {\n" 8698 " }\n" 8699 "}\n", 8700 getLLVMStyle()); 8701 } 8702 8703 TEST_F(FormatTest, UnderstandsPragmas) { 8704 verifyFormat("#pragma omp reduction(| : var)"); 8705 verifyFormat("#pragma omp reduction(+ : var)"); 8706 8707 EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string " 8708 "(including parentheses).", 8709 format("#pragma mark Any non-hyphenated or hyphenated string " 8710 "(including parentheses).")); 8711 } 8712 8713 #define EXPECT_ALL_STYLES_EQUAL(Styles) \ 8714 for (size_t i = 1; i < Styles.size(); ++i) \ 8715 EXPECT_EQ(Styles[0], Styles[i]) << "Style #" << i << " of " \ 8716 << Styles.size() \ 8717 << " differs from Style #0" 8718 8719 TEST_F(FormatTest, GetsPredefinedStyleByName) { 8720 SmallVector<FormatStyle, 3> Styles; 8721 Styles.resize(3); 8722 8723 Styles[0] = getLLVMStyle(); 8724 EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1])); 8725 EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2])); 8726 EXPECT_ALL_STYLES_EQUAL(Styles); 8727 8728 Styles[0] = getGoogleStyle(); 8729 EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1])); 8730 EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2])); 8731 EXPECT_ALL_STYLES_EQUAL(Styles); 8732 8733 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 8734 EXPECT_TRUE( 8735 getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1])); 8736 EXPECT_TRUE( 8737 getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2])); 8738 EXPECT_ALL_STYLES_EQUAL(Styles); 8739 8740 Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp); 8741 EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1])); 8742 EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2])); 8743 EXPECT_ALL_STYLES_EQUAL(Styles); 8744 8745 Styles[0] = getMozillaStyle(); 8746 EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1])); 8747 EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2])); 8748 EXPECT_ALL_STYLES_EQUAL(Styles); 8749 8750 Styles[0] = getWebKitStyle(); 8751 EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1])); 8752 EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2])); 8753 EXPECT_ALL_STYLES_EQUAL(Styles); 8754 8755 Styles[0] = getGNUStyle(); 8756 EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1])); 8757 EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2])); 8758 EXPECT_ALL_STYLES_EQUAL(Styles); 8759 8760 EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0])); 8761 } 8762 8763 TEST_F(FormatTest, GetsCorrectBasedOnStyle) { 8764 SmallVector<FormatStyle, 8> Styles; 8765 Styles.resize(2); 8766 8767 Styles[0] = getGoogleStyle(); 8768 Styles[1] = getLLVMStyle(); 8769 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 8770 EXPECT_ALL_STYLES_EQUAL(Styles); 8771 8772 Styles.resize(5); 8773 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 8774 Styles[1] = getLLVMStyle(); 8775 Styles[1].Language = FormatStyle::LK_JavaScript; 8776 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 8777 8778 Styles[2] = getLLVMStyle(); 8779 Styles[2].Language = FormatStyle::LK_JavaScript; 8780 EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n" 8781 "BasedOnStyle: Google", 8782 &Styles[2]).value()); 8783 8784 Styles[3] = getLLVMStyle(); 8785 Styles[3].Language = FormatStyle::LK_JavaScript; 8786 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n" 8787 "Language: JavaScript", 8788 &Styles[3]).value()); 8789 8790 Styles[4] = getLLVMStyle(); 8791 Styles[4].Language = FormatStyle::LK_JavaScript; 8792 EXPECT_EQ(0, parseConfiguration("---\n" 8793 "BasedOnStyle: LLVM\n" 8794 "IndentWidth: 123\n" 8795 "---\n" 8796 "BasedOnStyle: Google\n" 8797 "Language: JavaScript", 8798 &Styles[4]).value()); 8799 EXPECT_ALL_STYLES_EQUAL(Styles); 8800 } 8801 8802 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME) \ 8803 Style.FIELD = false; \ 8804 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value()); \ 8805 EXPECT_TRUE(Style.FIELD); \ 8806 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value()); \ 8807 EXPECT_FALSE(Style.FIELD); 8808 8809 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD) 8810 8811 #define CHECK_PARSE(TEXT, FIELD, VALUE) \ 8812 EXPECT_NE(VALUE, Style.FIELD); \ 8813 EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value()); \ 8814 EXPECT_EQ(VALUE, Style.FIELD) 8815 8816 TEST_F(FormatTest, ParsesConfigurationBools) { 8817 FormatStyle Style = {}; 8818 Style.Language = FormatStyle::LK_Cpp; 8819 CHECK_PARSE_BOOL(AlignAfterOpenBracket); 8820 CHECK_PARSE_BOOL(AlignEscapedNewlinesLeft); 8821 CHECK_PARSE_BOOL(AlignOperands); 8822 CHECK_PARSE_BOOL(AlignTrailingComments); 8823 CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine); 8824 CHECK_PARSE_BOOL(AllowShortBlocksOnASingleLine); 8825 CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine); 8826 CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine); 8827 CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine); 8828 CHECK_PARSE_BOOL(AlwaysBreakAfterDefinitionReturnType); 8829 CHECK_PARSE_BOOL(AlwaysBreakTemplateDeclarations); 8830 CHECK_PARSE_BOOL(BinPackParameters); 8831 CHECK_PARSE_BOOL(BinPackArguments); 8832 CHECK_PARSE_BOOL(BreakBeforeTernaryOperators); 8833 CHECK_PARSE_BOOL(BreakConstructorInitializersBeforeComma); 8834 CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine); 8835 CHECK_PARSE_BOOL(DerivePointerAlignment); 8836 CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding"); 8837 CHECK_PARSE_BOOL(IndentCaseLabels); 8838 CHECK_PARSE_BOOL(IndentWrappedFunctionNames); 8839 CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks); 8840 CHECK_PARSE_BOOL(ObjCSpaceAfterProperty); 8841 CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList); 8842 CHECK_PARSE_BOOL(Cpp11BracedListStyle); 8843 CHECK_PARSE_BOOL(SpacesInParentheses); 8844 CHECK_PARSE_BOOL(SpacesInSquareBrackets); 8845 CHECK_PARSE_BOOL(SpacesInAngles); 8846 CHECK_PARSE_BOOL(SpaceInEmptyParentheses); 8847 CHECK_PARSE_BOOL(SpacesInContainerLiterals); 8848 CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses); 8849 CHECK_PARSE_BOOL(SpaceAfterCStyleCast); 8850 CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators); 8851 } 8852 8853 #undef CHECK_PARSE_BOOL 8854 8855 TEST_F(FormatTest, ParsesConfiguration) { 8856 FormatStyle Style = {}; 8857 Style.Language = FormatStyle::LK_Cpp; 8858 CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234); 8859 CHECK_PARSE("ConstructorInitializerIndentWidth: 1234", 8860 ConstructorInitializerIndentWidth, 1234u); 8861 CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u); 8862 CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u); 8863 CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u); 8864 CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234", 8865 PenaltyBreakBeforeFirstCallParameter, 1234u); 8866 CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u); 8867 CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234", 8868 PenaltyReturnTypeOnItsOwnLine, 1234u); 8869 CHECK_PARSE("SpacesBeforeTrailingComments: 1234", 8870 SpacesBeforeTrailingComments, 1234u); 8871 CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u); 8872 CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u); 8873 8874 Style.PointerAlignment = FormatStyle::PAS_Middle; 8875 CHECK_PARSE("PointerAlignment: Left", PointerAlignment, 8876 FormatStyle::PAS_Left); 8877 CHECK_PARSE("PointerAlignment: Right", PointerAlignment, 8878 FormatStyle::PAS_Right); 8879 CHECK_PARSE("PointerAlignment: Middle", PointerAlignment, 8880 FormatStyle::PAS_Middle); 8881 // For backward compatibility: 8882 CHECK_PARSE("PointerBindsToType: Left", PointerAlignment, 8883 FormatStyle::PAS_Left); 8884 CHECK_PARSE("PointerBindsToType: Right", PointerAlignment, 8885 FormatStyle::PAS_Right); 8886 CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment, 8887 FormatStyle::PAS_Middle); 8888 8889 Style.Standard = FormatStyle::LS_Auto; 8890 CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03); 8891 CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Cpp11); 8892 CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03); 8893 CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11); 8894 CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto); 8895 8896 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 8897 CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment", 8898 BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment); 8899 CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators, 8900 FormatStyle::BOS_None); 8901 CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators, 8902 FormatStyle::BOS_All); 8903 // For backward compatibility: 8904 CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators, 8905 FormatStyle::BOS_None); 8906 CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators, 8907 FormatStyle::BOS_All); 8908 8909 Style.UseTab = FormatStyle::UT_ForIndentation; 8910 CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never); 8911 CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation); 8912 CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always); 8913 // For backward compatibility: 8914 CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never); 8915 CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always); 8916 8917 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 8918 CHECK_PARSE("AllowShortFunctionsOnASingleLine: None", 8919 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 8920 CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline", 8921 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline); 8922 CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty", 8923 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty); 8924 CHECK_PARSE("AllowShortFunctionsOnASingleLine: All", 8925 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 8926 // For backward compatibility: 8927 CHECK_PARSE("AllowShortFunctionsOnASingleLine: false", 8928 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 8929 CHECK_PARSE("AllowShortFunctionsOnASingleLine: true", 8930 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 8931 8932 Style.SpaceBeforeParens = FormatStyle::SBPO_Always; 8933 CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens, 8934 FormatStyle::SBPO_Never); 8935 CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens, 8936 FormatStyle::SBPO_Always); 8937 CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens, 8938 FormatStyle::SBPO_ControlStatements); 8939 // For backward compatibility: 8940 CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens, 8941 FormatStyle::SBPO_Never); 8942 CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens, 8943 FormatStyle::SBPO_ControlStatements); 8944 8945 Style.ColumnLimit = 123; 8946 FormatStyle BaseStyle = getLLVMStyle(); 8947 CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit); 8948 CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u); 8949 8950 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 8951 CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces, 8952 FormatStyle::BS_Attach); 8953 CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces, 8954 FormatStyle::BS_Linux); 8955 CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces, 8956 FormatStyle::BS_Stroustrup); 8957 CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces, 8958 FormatStyle::BS_Allman); 8959 CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU); 8960 8961 Style.NamespaceIndentation = FormatStyle::NI_All; 8962 CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation, 8963 FormatStyle::NI_None); 8964 CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation, 8965 FormatStyle::NI_Inner); 8966 CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation, 8967 FormatStyle::NI_All); 8968 8969 Style.ForEachMacros.clear(); 8970 std::vector<std::string> BoostForeach; 8971 BoostForeach.push_back("BOOST_FOREACH"); 8972 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach); 8973 std::vector<std::string> BoostAndQForeach; 8974 BoostAndQForeach.push_back("BOOST_FOREACH"); 8975 BoostAndQForeach.push_back("Q_FOREACH"); 8976 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros, 8977 BoostAndQForeach); 8978 } 8979 8980 TEST_F(FormatTest, ParsesConfigurationWithLanguages) { 8981 FormatStyle Style = {}; 8982 Style.Language = FormatStyle::LK_Cpp; 8983 CHECK_PARSE("Language: Cpp\n" 8984 "IndentWidth: 12", 8985 IndentWidth, 12u); 8986 EXPECT_EQ(parseConfiguration("Language: JavaScript\n" 8987 "IndentWidth: 34", 8988 &Style), 8989 ParseError::Unsuitable); 8990 EXPECT_EQ(12u, Style.IndentWidth); 8991 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 8992 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 8993 8994 Style.Language = FormatStyle::LK_JavaScript; 8995 CHECK_PARSE("Language: JavaScript\n" 8996 "IndentWidth: 12", 8997 IndentWidth, 12u); 8998 CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u); 8999 EXPECT_EQ(parseConfiguration("Language: Cpp\n" 9000 "IndentWidth: 34", 9001 &Style), 9002 ParseError::Unsuitable); 9003 EXPECT_EQ(23u, Style.IndentWidth); 9004 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 9005 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 9006 9007 CHECK_PARSE("BasedOnStyle: LLVM\n" 9008 "IndentWidth: 67", 9009 IndentWidth, 67u); 9010 9011 CHECK_PARSE("---\n" 9012 "Language: JavaScript\n" 9013 "IndentWidth: 12\n" 9014 "---\n" 9015 "Language: Cpp\n" 9016 "IndentWidth: 34\n" 9017 "...\n", 9018 IndentWidth, 12u); 9019 9020 Style.Language = FormatStyle::LK_Cpp; 9021 CHECK_PARSE("---\n" 9022 "Language: JavaScript\n" 9023 "IndentWidth: 12\n" 9024 "---\n" 9025 "Language: Cpp\n" 9026 "IndentWidth: 34\n" 9027 "...\n", 9028 IndentWidth, 34u); 9029 CHECK_PARSE("---\n" 9030 "IndentWidth: 78\n" 9031 "---\n" 9032 "Language: JavaScript\n" 9033 "IndentWidth: 56\n" 9034 "...\n", 9035 IndentWidth, 78u); 9036 9037 Style.ColumnLimit = 123; 9038 Style.IndentWidth = 234; 9039 Style.BreakBeforeBraces = FormatStyle::BS_Linux; 9040 Style.TabWidth = 345; 9041 EXPECT_FALSE(parseConfiguration("---\n" 9042 "IndentWidth: 456\n" 9043 "BreakBeforeBraces: Allman\n" 9044 "---\n" 9045 "Language: JavaScript\n" 9046 "IndentWidth: 111\n" 9047 "TabWidth: 111\n" 9048 "---\n" 9049 "Language: Cpp\n" 9050 "BreakBeforeBraces: Stroustrup\n" 9051 "TabWidth: 789\n" 9052 "...\n", 9053 &Style)); 9054 EXPECT_EQ(123u, Style.ColumnLimit); 9055 EXPECT_EQ(456u, Style.IndentWidth); 9056 EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces); 9057 EXPECT_EQ(789u, Style.TabWidth); 9058 9059 EXPECT_EQ(parseConfiguration("---\n" 9060 "Language: JavaScript\n" 9061 "IndentWidth: 56\n" 9062 "---\n" 9063 "IndentWidth: 78\n" 9064 "...\n", 9065 &Style), 9066 ParseError::Error); 9067 EXPECT_EQ(parseConfiguration("---\n" 9068 "Language: JavaScript\n" 9069 "IndentWidth: 56\n" 9070 "---\n" 9071 "Language: JavaScript\n" 9072 "IndentWidth: 78\n" 9073 "...\n", 9074 &Style), 9075 ParseError::Error); 9076 9077 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 9078 } 9079 9080 #undef CHECK_PARSE 9081 9082 TEST_F(FormatTest, UsesLanguageForBasedOnStyle) { 9083 FormatStyle Style = {}; 9084 Style.Language = FormatStyle::LK_JavaScript; 9085 Style.BreakBeforeTernaryOperators = true; 9086 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value()); 9087 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 9088 9089 Style.BreakBeforeTernaryOperators = true; 9090 EXPECT_EQ(0, parseConfiguration("---\n" 9091 "BasedOnStyle: Google\n" 9092 "---\n" 9093 "Language: JavaScript\n" 9094 "IndentWidth: 76\n" 9095 "...\n", &Style).value()); 9096 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 9097 EXPECT_EQ(76u, Style.IndentWidth); 9098 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 9099 } 9100 9101 TEST_F(FormatTest, ConfigurationRoundTripTest) { 9102 FormatStyle Style = getLLVMStyle(); 9103 std::string YAML = configurationAsText(Style); 9104 FormatStyle ParsedStyle = {}; 9105 ParsedStyle.Language = FormatStyle::LK_Cpp; 9106 EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value()); 9107 EXPECT_EQ(Style, ParsedStyle); 9108 } 9109 9110 TEST_F(FormatTest, WorksFor8bitEncodings) { 9111 EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n" 9112 "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n" 9113 "\"\xe7\xe8\xec\xed\xfe\xfe \"\n" 9114 "\"\xef\xee\xf0\xf3...\"", 9115 format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 " 9116 "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe " 9117 "\xef\xee\xf0\xf3...\"", 9118 getLLVMStyleWithColumns(12))); 9119 } 9120 9121 TEST_F(FormatTest, HandlesUTF8BOM) { 9122 EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf")); 9123 EXPECT_EQ("\xef\xbb\xbf#include <iostream>", 9124 format("\xef\xbb\xbf#include <iostream>")); 9125 EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>", 9126 format("\xef\xbb\xbf\n#include <iostream>")); 9127 } 9128 9129 // FIXME: Encode Cyrillic and CJK characters below to appease MS compilers. 9130 #if !defined(_MSC_VER) 9131 9132 TEST_F(FormatTest, CountsUTF8CharactersProperly) { 9133 verifyFormat("\"Однажды в студёную зимнюю пору...\"", 9134 getLLVMStyleWithColumns(35)); 9135 verifyFormat("\"一 二 三 四 五 六 七 八 九 十\"", 9136 getLLVMStyleWithColumns(31)); 9137 verifyFormat("// Однажды в студёную зимнюю пору...", 9138 getLLVMStyleWithColumns(36)); 9139 verifyFormat("// 一 二 三 四 五 六 七 八 九 十", 9140 getLLVMStyleWithColumns(32)); 9141 verifyFormat("/* Однажды в студёную зимнюю пору... */", 9142 getLLVMStyleWithColumns(39)); 9143 verifyFormat("/* 一 二 三 四 五 六 七 八 九 十 */", 9144 getLLVMStyleWithColumns(35)); 9145 } 9146 9147 TEST_F(FormatTest, SplitsUTF8Strings) { 9148 // Non-printable characters' width is currently considered to be the length in 9149 // bytes in UTF8. The characters can be displayed in very different manner 9150 // (zero-width, single width with a substitution glyph, expanded to their code 9151 // (e.g. "<8d>"), so there's no single correct way to handle them. 9152 EXPECT_EQ("\"aaaaÄ\"\n" 9153 "\"\xc2\x8d\";", 9154 format("\"aaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10))); 9155 EXPECT_EQ("\"aaaaaaaÄ\"\n" 9156 "\"\xc2\x8d\";", 9157 format("\"aaaaaaaÄ\xc2\x8d\";", getLLVMStyleWithColumns(10))); 9158 EXPECT_EQ( 9159 "\"Однажды, в \"\n" 9160 "\"студёную \"\n" 9161 "\"зимнюю \"\n" 9162 "\"пору,\"", 9163 format("\"Однажды, в студёную зимнюю пору,\"", 9164 getLLVMStyleWithColumns(13))); 9165 EXPECT_EQ("\"一 二 三 \"\n" 9166 "\"四 五六 \"\n" 9167 "\"七 八 九 \"\n" 9168 "\"十\"", 9169 format("\"一 二 三 四 五六 七 八 九 十\"", 9170 getLLVMStyleWithColumns(11))); 9171 EXPECT_EQ("\"一\t二 \"\n" 9172 "\"\t三 \"\n" 9173 "\"四 五\t六 \"\n" 9174 "\"\t七 \"\n" 9175 "\"八九十\tqq\"", 9176 format("\"一\t二 \t三 四 五\t六 \t七 八九十\tqq\"", 9177 getLLVMStyleWithColumns(11))); 9178 } 9179 9180 9181 TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) { 9182 EXPECT_EQ("const char *sssss =\n" 9183 " \"一二三四五六七八\\\n" 9184 " 九 十\";", 9185 format("const char *sssss = \"一二三四五六七八\\\n" 9186 " 九 十\";", 9187 getLLVMStyleWithColumns(30))); 9188 } 9189 9190 TEST_F(FormatTest, SplitsUTF8LineComments) { 9191 EXPECT_EQ("// aaaaÄ\xc2\x8d", 9192 format("// aaaaÄ\xc2\x8d", getLLVMStyleWithColumns(10))); 9193 EXPECT_EQ("// Я из лесу\n" 9194 "// вышел; был\n" 9195 "// сильный\n" 9196 "// мороз.", 9197 format("// Я из лесу вышел; был сильный мороз.", 9198 getLLVMStyleWithColumns(13))); 9199 EXPECT_EQ("// 一二三\n" 9200 "// 四五六七\n" 9201 "// 八 九\n" 9202 "// 十", 9203 format("// 一二三 四五六七 八 九 十", getLLVMStyleWithColumns(9))); 9204 } 9205 9206 TEST_F(FormatTest, SplitsUTF8BlockComments) { 9207 EXPECT_EQ("/* Гляжу,\n" 9208 " * поднимается\n" 9209 " * медленно в\n" 9210 " * гору\n" 9211 " * Лошадка,\n" 9212 " * везущая\n" 9213 " * хворосту\n" 9214 " * воз. */", 9215 format("/* Гляжу, поднимается медленно в гору\n" 9216 " * Лошадка, везущая хворосту воз. */", 9217 getLLVMStyleWithColumns(13))); 9218 EXPECT_EQ( 9219 "/* 一二三\n" 9220 " * 四五六七\n" 9221 " * 八 九\n" 9222 " * 十 */", 9223 format("/* 一二三 四五六七 八 九 十 */", getLLVMStyleWithColumns(9))); 9224 EXPECT_EQ("/* �������� ��������\n" 9225 " * ��������\n" 9226 " * ������-�� */", 9227 format("/* �������� �������� �������� ������-�� */", getLLVMStyleWithColumns(12))); 9228 } 9229 9230 #endif // _MSC_VER 9231 9232 TEST_F(FormatTest, ConstructorInitializerIndentWidth) { 9233 FormatStyle Style = getLLVMStyle(); 9234 9235 Style.ConstructorInitializerIndentWidth = 4; 9236 verifyFormat( 9237 "SomeClass::Constructor()\n" 9238 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 9239 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 9240 Style); 9241 9242 Style.ConstructorInitializerIndentWidth = 2; 9243 verifyFormat( 9244 "SomeClass::Constructor()\n" 9245 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 9246 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 9247 Style); 9248 9249 Style.ConstructorInitializerIndentWidth = 0; 9250 verifyFormat( 9251 "SomeClass::Constructor()\n" 9252 ": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 9253 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 9254 Style); 9255 } 9256 9257 TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) { 9258 FormatStyle Style = getLLVMStyle(); 9259 Style.BreakConstructorInitializersBeforeComma = true; 9260 Style.ConstructorInitializerIndentWidth = 4; 9261 verifyFormat("SomeClass::Constructor()\n" 9262 " : a(a)\n" 9263 " , b(b)\n" 9264 " , c(c) {}", 9265 Style); 9266 verifyFormat("SomeClass::Constructor()\n" 9267 " : a(a) {}", 9268 Style); 9269 9270 Style.ColumnLimit = 0; 9271 verifyFormat("SomeClass::Constructor()\n" 9272 " : a(a) {}", 9273 Style); 9274 verifyFormat("SomeClass::Constructor()\n" 9275 " : a(a)\n" 9276 " , b(b)\n" 9277 " , c(c) {}", 9278 Style); 9279 verifyFormat("SomeClass::Constructor()\n" 9280 " : a(a) {\n" 9281 " foo();\n" 9282 " bar();\n" 9283 "}", 9284 Style); 9285 9286 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 9287 verifyFormat("SomeClass::Constructor()\n" 9288 " : a(a)\n" 9289 " , b(b)\n" 9290 " , c(c) {\n}", 9291 Style); 9292 verifyFormat("SomeClass::Constructor()\n" 9293 " : a(a) {\n}", 9294 Style); 9295 9296 Style.ColumnLimit = 80; 9297 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 9298 Style.ConstructorInitializerIndentWidth = 2; 9299 verifyFormat("SomeClass::Constructor()\n" 9300 " : a(a)\n" 9301 " , b(b)\n" 9302 " , c(c) {}", 9303 Style); 9304 9305 Style.ConstructorInitializerIndentWidth = 0; 9306 verifyFormat("SomeClass::Constructor()\n" 9307 ": a(a)\n" 9308 ", b(b)\n" 9309 ", c(c) {}", 9310 Style); 9311 9312 Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 9313 Style.ConstructorInitializerIndentWidth = 4; 9314 verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style); 9315 verifyFormat( 9316 "SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n", 9317 Style); 9318 verifyFormat( 9319 "SomeClass::Constructor()\n" 9320 " : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}", 9321 Style); 9322 Style.ConstructorInitializerIndentWidth = 4; 9323 Style.ColumnLimit = 60; 9324 verifyFormat("SomeClass::Constructor()\n" 9325 " : aaaaaaaa(aaaaaaaa)\n" 9326 " , aaaaaaaa(aaaaaaaa)\n" 9327 " , aaaaaaaa(aaaaaaaa) {}", 9328 Style); 9329 } 9330 9331 TEST_F(FormatTest, Destructors) { 9332 verifyFormat("void F(int &i) { i.~int(); }"); 9333 verifyFormat("void F(int &i) { i->~int(); }"); 9334 } 9335 9336 TEST_F(FormatTest, FormatsWithWebKitStyle) { 9337 FormatStyle Style = getWebKitStyle(); 9338 9339 // Don't indent in outer namespaces. 9340 verifyFormat("namespace outer {\n" 9341 "int i;\n" 9342 "namespace inner {\n" 9343 " int i;\n" 9344 "} // namespace inner\n" 9345 "} // namespace outer\n" 9346 "namespace other_outer {\n" 9347 "int i;\n" 9348 "}", 9349 Style); 9350 9351 // Don't indent case labels. 9352 verifyFormat("switch (variable) {\n" 9353 "case 1:\n" 9354 "case 2:\n" 9355 " doSomething();\n" 9356 " break;\n" 9357 "default:\n" 9358 " ++variable;\n" 9359 "}", 9360 Style); 9361 9362 // Wrap before binary operators. 9363 EXPECT_EQ( 9364 "void f()\n" 9365 "{\n" 9366 " if (aaaaaaaaaaaaaaaa\n" 9367 " && bbbbbbbbbbbbbbbbbbbbbbbb\n" 9368 " && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 9369 " return;\n" 9370 "}", 9371 format( 9372 "void f() {\n" 9373 "if (aaaaaaaaaaaaaaaa\n" 9374 "&& bbbbbbbbbbbbbbbbbbbbbbbb\n" 9375 "&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 9376 "return;\n" 9377 "}", 9378 Style)); 9379 9380 // Allow functions on a single line. 9381 verifyFormat("void f() { return; }", Style); 9382 9383 // Constructor initializers are formatted one per line with the "," on the 9384 // new line. 9385 verifyFormat("Constructor()\n" 9386 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 9387 " , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n" 9388 " aaaaaaaaaaaaaa)\n" 9389 " , aaaaaaaaaaaaaaaaaaaaaaa()\n" 9390 "{\n" 9391 "}", 9392 Style); 9393 verifyFormat("SomeClass::Constructor()\n" 9394 " : a(a)\n" 9395 "{\n" 9396 "}", 9397 Style); 9398 EXPECT_EQ("SomeClass::Constructor()\n" 9399 " : a(a)\n" 9400 "{\n" 9401 "}", 9402 format("SomeClass::Constructor():a(a){}", Style)); 9403 verifyFormat("SomeClass::Constructor()\n" 9404 " : a(a)\n" 9405 " , b(b)\n" 9406 " , c(c)\n" 9407 "{\n" 9408 "}", Style); 9409 verifyFormat("SomeClass::Constructor()\n" 9410 " : a(a)\n" 9411 "{\n" 9412 " foo();\n" 9413 " bar();\n" 9414 "}", 9415 Style); 9416 9417 // Access specifiers should be aligned left. 9418 verifyFormat("class C {\n" 9419 "public:\n" 9420 " int i;\n" 9421 "};", 9422 Style); 9423 9424 // Do not align comments. 9425 verifyFormat("int a; // Do not\n" 9426 "double b; // align comments.", 9427 Style); 9428 9429 // Do not align operands. 9430 EXPECT_EQ("ASSERT(aaaa\n" 9431 " || bbbb);", 9432 format("ASSERT ( aaaa\n||bbbb);", Style)); 9433 9434 // Accept input's line breaks. 9435 EXPECT_EQ("if (aaaaaaaaaaaaaaa\n" 9436 " || bbbbbbbbbbbbbbb) {\n" 9437 " i++;\n" 9438 "}", 9439 format("if (aaaaaaaaaaaaaaa\n" 9440 "|| bbbbbbbbbbbbbbb) { i++; }", 9441 Style)); 9442 EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n" 9443 " i++;\n" 9444 "}", 9445 format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style)); 9446 9447 // Don't automatically break all macro definitions (llvm.org/PR17842). 9448 verifyFormat("#define aNumber 10", Style); 9449 // However, generally keep the line breaks that the user authored. 9450 EXPECT_EQ("#define aNumber \\\n" 9451 " 10", 9452 format("#define aNumber \\\n" 9453 " 10", 9454 Style)); 9455 9456 // Keep empty and one-element array literals on a single line. 9457 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n" 9458 " copyItems:YES];", 9459 format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n" 9460 "copyItems:YES];", 9461 Style)); 9462 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n" 9463 " copyItems:YES];", 9464 format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n" 9465 " copyItems:YES];", 9466 Style)); 9467 // FIXME: This does not seem right, there should be more indentation before 9468 // the array literal's entries. Nested blocks have the same problem. 9469 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 9470 " @\"a\",\n" 9471 " @\"a\"\n" 9472 "]\n" 9473 " copyItems:YES];", 9474 format("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 9475 " @\"a\",\n" 9476 " @\"a\"\n" 9477 " ]\n" 9478 " copyItems:YES];", 9479 Style)); 9480 EXPECT_EQ( 9481 "NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 9482 " copyItems:YES];", 9483 format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 9484 " copyItems:YES];", 9485 Style)); 9486 9487 verifyFormat("[self.a b:c c:d];", Style); 9488 EXPECT_EQ("[self.a b:c\n" 9489 " c:d];", 9490 format("[self.a b:c\n" 9491 "c:d];", 9492 Style)); 9493 } 9494 9495 TEST_F(FormatTest, FormatsLambdas) { 9496 verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n"); 9497 verifyFormat("int c = [&] { [=] { return b++; }(); }();\n"); 9498 verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n"); 9499 verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n"); 9500 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n"); 9501 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n"); 9502 verifyFormat("void f() {\n" 9503 " other(x.begin(), x.end(), [&](int, int) { return 1; });\n" 9504 "}\n"); 9505 verifyFormat("void f() {\n" 9506 " other(x.begin(), //\n" 9507 " x.end(), //\n" 9508 " [&](int, int) { return 1; });\n" 9509 "}\n"); 9510 verifyFormat("SomeFunction([]() { // A cool function...\n" 9511 " return 43;\n" 9512 "});"); 9513 EXPECT_EQ("SomeFunction([]() {\n" 9514 "#define A a\n" 9515 " return 43;\n" 9516 "});", 9517 format("SomeFunction([](){\n" 9518 "#define A a\n" 9519 "return 43;\n" 9520 "});")); 9521 verifyFormat("void f() {\n" 9522 " SomeFunction([](decltype(x), A *a) {});\n" 9523 "}"); 9524 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 9525 " [](const aaaaaaaaaa &a) { return a; });"); 9526 verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n" 9527 " SomeOtherFunctioooooooooooooooooooooooooon();\n" 9528 "});"); 9529 verifyFormat("Constructor()\n" 9530 " : Field([] { // comment\n" 9531 " int i;\n" 9532 " }) {}"); 9533 9534 // Lambdas with return types. 9535 verifyFormat("int c = []() -> int { return 2; }();\n"); 9536 verifyFormat("int c = []() -> vector<int> { return {2}; }();\n"); 9537 verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());"); 9538 verifyGoogleFormat("auto a = [&b, c](D* d) -> D* {};"); 9539 verifyGoogleFormat("auto a = [&b, c](D* d) -> pair<D*, D*> {};"); 9540 verifyGoogleFormat("auto a = [&b, c](D* d) -> D& {};"); 9541 verifyGoogleFormat("auto a = [&b, c](D* d) -> const D* {};"); 9542 verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n" 9543 " int j) -> int {\n" 9544 " return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n" 9545 "};"); 9546 verifyFormat( 9547 "aaaaaaaaaaaaaaaaaaaaaa(\n" 9548 " [](aaaaaaaaaaaaaaaaaaaaaaaaaaa &aaa) -> aaaaaaaaaaaaaaaa {\n" 9549 " return aaaaaaaaaaaaaaaaa;\n" 9550 " });", 9551 getLLVMStyleWithColumns(70)); 9552 9553 // Multiple lambdas in the same parentheses change indentation rules. 9554 verifyFormat("SomeFunction(\n" 9555 " []() {\n" 9556 " int i = 42;\n" 9557 " return i;\n" 9558 " },\n" 9559 " []() {\n" 9560 " int j = 43;\n" 9561 " return j;\n" 9562 " });"); 9563 9564 // More complex introducers. 9565 verifyFormat("return [i, args...] {};"); 9566 9567 // Not lambdas. 9568 verifyFormat("constexpr char hello[]{\"hello\"};"); 9569 verifyFormat("double &operator[](int i) { return 0; }\n" 9570 "int i;"); 9571 verifyFormat("std::unique_ptr<int[]> foo() {}"); 9572 verifyFormat("int i = a[a][a]->f();"); 9573 verifyFormat("int i = (*b)[a]->f();"); 9574 9575 // Other corner cases. 9576 verifyFormat("void f() {\n" 9577 " bar([]() {} // Did not respect SpacesBeforeTrailingComments\n" 9578 " );\n" 9579 "}"); 9580 9581 // Lambdas created through weird macros. 9582 verifyFormat("void f() {\n" 9583 " MACRO((const AA &a) { return 1; });\n" 9584 "}"); 9585 9586 verifyFormat("if (blah_blah(whatever, whatever, [] {\n" 9587 " doo_dah();\n" 9588 " doo_dah();\n" 9589 " })) {\n" 9590 "}"); 9591 verifyFormat("auto lambda = []() {\n" 9592 " int a = 2\n" 9593 "#if A\n" 9594 " + 2\n" 9595 "#endif\n" 9596 " ;\n" 9597 "};"); 9598 } 9599 9600 TEST_F(FormatTest, FormatsBlocks) { 9601 FormatStyle ShortBlocks = getLLVMStyle(); 9602 ShortBlocks.AllowShortBlocksOnASingleLine = true; 9603 verifyFormat("int (^Block)(int, int);", ShortBlocks); 9604 verifyFormat("int (^Block1)(int, int) = ^(int i, int j)", ShortBlocks); 9605 verifyFormat("void (^block)(int) = ^(id test) { int i; };", ShortBlocks); 9606 verifyFormat("void (^block)(int) = ^(int test) { int i; };", ShortBlocks); 9607 verifyFormat("void (^block)(int) = ^id(int test) { int i; };", ShortBlocks); 9608 verifyFormat("void (^block)(int) = ^int(int test) { int i; };", ShortBlocks); 9609 9610 verifyFormat("foo(^{ bar(); });", ShortBlocks); 9611 verifyFormat("foo(a, ^{ bar(); });", ShortBlocks); 9612 verifyFormat("{ void (^block)(Object *x); }", ShortBlocks); 9613 9614 verifyFormat("[operation setCompletionBlock:^{\n" 9615 " [self onOperationDone];\n" 9616 "}];"); 9617 verifyFormat("int i = {[operation setCompletionBlock:^{\n" 9618 " [self onOperationDone];\n" 9619 "}]};"); 9620 verifyFormat("[operation setCompletionBlock:^(int *i) {\n" 9621 " f();\n" 9622 "}];"); 9623 verifyFormat("int a = [operation block:^int(int *i) {\n" 9624 " return 1;\n" 9625 "}];"); 9626 verifyFormat("[myObject doSomethingWith:arg1\n" 9627 " aaa:^int(int *a) {\n" 9628 " return 1;\n" 9629 " }\n" 9630 " bbb:f(a * bbbbbbbb)];"); 9631 9632 verifyFormat("[operation setCompletionBlock:^{\n" 9633 " [self.delegate newDataAvailable];\n" 9634 "}];", 9635 getLLVMStyleWithColumns(60)); 9636 verifyFormat("dispatch_async(_fileIOQueue, ^{\n" 9637 " NSString *path = [self sessionFilePath];\n" 9638 " if (path) {\n" 9639 " // ...\n" 9640 " }\n" 9641 "});"); 9642 verifyFormat("[[SessionService sharedService]\n" 9643 " loadWindowWithCompletionBlock:^(SessionWindow *window) {\n" 9644 " if (window) {\n" 9645 " [self windowDidLoad:window];\n" 9646 " } else {\n" 9647 " [self errorLoadingWindow];\n" 9648 " }\n" 9649 " }];"); 9650 verifyFormat("void (^largeBlock)(void) = ^{\n" 9651 " // ...\n" 9652 "};\n", 9653 getLLVMStyleWithColumns(40)); 9654 verifyFormat("[[SessionService sharedService]\n" 9655 " loadWindowWithCompletionBlock: //\n" 9656 " ^(SessionWindow *window) {\n" 9657 " if (window) {\n" 9658 " [self windowDidLoad:window];\n" 9659 " } else {\n" 9660 " [self errorLoadingWindow];\n" 9661 " }\n" 9662 " }];", 9663 getLLVMStyleWithColumns(60)); 9664 verifyFormat("[myObject doSomethingWith:arg1\n" 9665 " firstBlock:^(Foo *a) {\n" 9666 " // ...\n" 9667 " int i;\n" 9668 " }\n" 9669 " secondBlock:^(Bar *b) {\n" 9670 " // ...\n" 9671 " int i;\n" 9672 " }\n" 9673 " thirdBlock:^Foo(Bar *b) {\n" 9674 " // ...\n" 9675 " int i;\n" 9676 " }];"); 9677 verifyFormat("[myObject doSomethingWith:arg1\n" 9678 " firstBlock:-1\n" 9679 " secondBlock:^(Bar *b) {\n" 9680 " // ...\n" 9681 " int i;\n" 9682 " }];"); 9683 9684 verifyFormat("f(^{\n" 9685 " @autoreleasepool {\n" 9686 " if (a) {\n" 9687 " g();\n" 9688 " }\n" 9689 " }\n" 9690 "});"); 9691 verifyFormat("Block b = ^int *(A *a, B *b) {}"); 9692 9693 FormatStyle FourIndent = getLLVMStyle(); 9694 FourIndent.ObjCBlockIndentWidth = 4; 9695 verifyFormat("[operation setCompletionBlock:^{\n" 9696 " [self onOperationDone];\n" 9697 "}];", 9698 FourIndent); 9699 } 9700 9701 TEST_F(FormatTest, SupportsCRLF) { 9702 EXPECT_EQ("int a;\r\n" 9703 "int b;\r\n" 9704 "int c;\r\n", 9705 format("int a;\r\n" 9706 " int b;\r\n" 9707 " int c;\r\n", 9708 getLLVMStyle())); 9709 EXPECT_EQ("int a;\r\n" 9710 "int b;\r\n" 9711 "int c;\r\n", 9712 format("int a;\r\n" 9713 " int b;\n" 9714 " int c;\r\n", 9715 getLLVMStyle())); 9716 EXPECT_EQ("int a;\n" 9717 "int b;\n" 9718 "int c;\n", 9719 format("int a;\r\n" 9720 " int b;\n" 9721 " int c;\n", 9722 getLLVMStyle())); 9723 EXPECT_EQ("\"aaaaaaa \"\r\n" 9724 "\"bbbbbbb\";\r\n", 9725 format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10))); 9726 EXPECT_EQ("#define A \\\r\n" 9727 " b; \\\r\n" 9728 " c; \\\r\n" 9729 " d;\r\n", 9730 format("#define A \\\r\n" 9731 " b; \\\r\n" 9732 " c; d; \r\n", 9733 getGoogleStyle())); 9734 9735 EXPECT_EQ("/*\r\n" 9736 "multi line block comments\r\n" 9737 "should not introduce\r\n" 9738 "an extra carriage return\r\n" 9739 "*/\r\n", 9740 format("/*\r\n" 9741 "multi line block comments\r\n" 9742 "should not introduce\r\n" 9743 "an extra carriage return\r\n" 9744 "*/\r\n")); 9745 } 9746 9747 TEST_F(FormatTest, MunchSemicolonAfterBlocks) { 9748 verifyFormat("MY_CLASS(C) {\n" 9749 " int i;\n" 9750 " int j;\n" 9751 "};"); 9752 } 9753 9754 TEST_F(FormatTest, ConfigurableContinuationIndentWidth) { 9755 FormatStyle TwoIndent = getLLVMStyleWithColumns(15); 9756 TwoIndent.ContinuationIndentWidth = 2; 9757 9758 EXPECT_EQ("int i =\n" 9759 " longFunction(\n" 9760 " arg);", 9761 format("int i = longFunction(arg);", TwoIndent)); 9762 9763 FormatStyle SixIndent = getLLVMStyleWithColumns(20); 9764 SixIndent.ContinuationIndentWidth = 6; 9765 9766 EXPECT_EQ("int i =\n" 9767 " longFunction(\n" 9768 " arg);", 9769 format("int i = longFunction(arg);", SixIndent)); 9770 } 9771 9772 TEST_F(FormatTest, SpacesInAngles) { 9773 FormatStyle Spaces = getLLVMStyle(); 9774 Spaces.SpacesInAngles = true; 9775 9776 verifyFormat("static_cast< int >(arg);", Spaces); 9777 verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces); 9778 verifyFormat("f< int, float >();", Spaces); 9779 verifyFormat("template <> g() {}", Spaces); 9780 verifyFormat("template < std::vector< int > > f() {}", Spaces); 9781 9782 Spaces.Standard = FormatStyle::LS_Cpp03; 9783 Spaces.SpacesInAngles = true; 9784 verifyFormat("A< A< int > >();", Spaces); 9785 9786 Spaces.SpacesInAngles = false; 9787 verifyFormat("A<A<int> >();", Spaces); 9788 9789 Spaces.Standard = FormatStyle::LS_Cpp11; 9790 Spaces.SpacesInAngles = true; 9791 verifyFormat("A< A< int > >();", Spaces); 9792 9793 Spaces.SpacesInAngles = false; 9794 verifyFormat("A<A<int>>();", Spaces); 9795 } 9796 9797 TEST_F(FormatTest, TripleAngleBrackets) { 9798 verifyFormat("f<<<1, 1>>>();"); 9799 verifyFormat("f<<<1, 1, 1, s>>>();"); 9800 verifyFormat("f<<<a, b, c, d>>>();"); 9801 EXPECT_EQ("f<<<1, 1>>>();", 9802 format("f <<< 1, 1 >>> ();")); 9803 verifyFormat("f<param><<<1, 1>>>();"); 9804 verifyFormat("f<1><<<1, 1>>>();"); 9805 EXPECT_EQ("f<param><<<1, 1>>>();", 9806 format("f< param > <<< 1, 1 >>> ();")); 9807 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 9808 "aaaaaaaaaaa<<<\n 1, 1>>>();"); 9809 } 9810 9811 TEST_F(FormatTest, MergeLessLessAtEnd) { 9812 verifyFormat("<<"); 9813 EXPECT_EQ("< < <", format("\\\n<<<")); 9814 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 9815 "aaallvm::outs() <<"); 9816 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 9817 "aaaallvm::outs()\n <<"); 9818 } 9819 9820 TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) { 9821 std::string code = "#if A\n" 9822 "#if B\n" 9823 "a.\n" 9824 "#endif\n" 9825 " a = 1;\n" 9826 "#else\n" 9827 "#endif\n" 9828 "#if C\n" 9829 "#else\n" 9830 "#endif\n"; 9831 EXPECT_EQ(code, format(code)); 9832 } 9833 9834 TEST_F(FormatTest, HandleConflictMarkers) { 9835 // Git/SVN conflict markers. 9836 EXPECT_EQ("int a;\n" 9837 "void f() {\n" 9838 " callme(some(parameter1,\n" 9839 "<<<<<<< text by the vcs\n" 9840 " parameter2),\n" 9841 "||||||| text by the vcs\n" 9842 " parameter2),\n" 9843 " parameter3,\n" 9844 "======= text by the vcs\n" 9845 " parameter2, parameter3),\n" 9846 ">>>>>>> text by the vcs\n" 9847 " otherparameter);\n", 9848 format("int a;\n" 9849 "void f() {\n" 9850 " callme(some(parameter1,\n" 9851 "<<<<<<< text by the vcs\n" 9852 " parameter2),\n" 9853 "||||||| text by the vcs\n" 9854 " parameter2),\n" 9855 " parameter3,\n" 9856 "======= text by the vcs\n" 9857 " parameter2,\n" 9858 " parameter3),\n" 9859 ">>>>>>> text by the vcs\n" 9860 " otherparameter);\n")); 9861 9862 // Perforce markers. 9863 EXPECT_EQ("void f() {\n" 9864 " function(\n" 9865 ">>>> text by the vcs\n" 9866 " parameter,\n" 9867 "==== text by the vcs\n" 9868 " parameter,\n" 9869 "==== text by the vcs\n" 9870 " parameter,\n" 9871 "<<<< text by the vcs\n" 9872 " parameter);\n", 9873 format("void f() {\n" 9874 " function(\n" 9875 ">>>> text by the vcs\n" 9876 " parameter,\n" 9877 "==== text by the vcs\n" 9878 " parameter,\n" 9879 "==== text by the vcs\n" 9880 " parameter,\n" 9881 "<<<< text by the vcs\n" 9882 " parameter);\n")); 9883 9884 EXPECT_EQ("<<<<<<<\n" 9885 "|||||||\n" 9886 "=======\n" 9887 ">>>>>>>", 9888 format("<<<<<<<\n" 9889 "|||||||\n" 9890 "=======\n" 9891 ">>>>>>>")); 9892 9893 EXPECT_EQ("<<<<<<<\n" 9894 "|||||||\n" 9895 "int i;\n" 9896 "=======\n" 9897 ">>>>>>>", 9898 format("<<<<<<<\n" 9899 "|||||||\n" 9900 "int i;\n" 9901 "=======\n" 9902 ">>>>>>>")); 9903 9904 // FIXME: Handle parsing of macros around conflict markers correctly: 9905 EXPECT_EQ("#define Macro \\\n" 9906 "<<<<<<<\n" 9907 "Something \\\n" 9908 "|||||||\n" 9909 "Else \\\n" 9910 "=======\n" 9911 "Other \\\n" 9912 ">>>>>>>\n" 9913 " End int i;\n", 9914 format("#define Macro \\\n" 9915 "<<<<<<<\n" 9916 " Something \\\n" 9917 "|||||||\n" 9918 " Else \\\n" 9919 "=======\n" 9920 " Other \\\n" 9921 ">>>>>>>\n" 9922 " End\n" 9923 "int i;\n")); 9924 } 9925 9926 TEST_F(FormatTest, DisableRegions) { 9927 EXPECT_EQ("int i;\n" 9928 "// clang-format off\n" 9929 " int j;\n" 9930 "// clang-format on\n" 9931 "int k;", 9932 format(" int i;\n" 9933 " // clang-format off\n" 9934 " int j;\n" 9935 " // clang-format on\n" 9936 " int k;")); 9937 EXPECT_EQ("int i;\n" 9938 "/* clang-format off */\n" 9939 " int j;\n" 9940 "/* clang-format on */\n" 9941 "int k;", 9942 format(" int i;\n" 9943 " /* clang-format off */\n" 9944 " int j;\n" 9945 " /* clang-format on */\n" 9946 " int k;")); 9947 } 9948 9949 TEST_F(FormatTest, DoNotCrashOnInvalidInput) { 9950 format("? ) ="); 9951 } 9952 9953 } // end namespace tooling 9954 } // end namespace clang 9955