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("{\n" 816 " some_code();\n" 817 "test_label:\n" 818 " some_other_code();\n" 819 "}"); 820 } 821 822 //===----------------------------------------------------------------------===// 823 // Tests for comments. 824 //===----------------------------------------------------------------------===// 825 826 TEST_F(FormatTest, UnderstandsSingleLineComments) { 827 verifyFormat("//* */"); 828 verifyFormat("// line 1\n" 829 "// line 2\n" 830 "void f() {}\n"); 831 832 verifyFormat("void f() {\n" 833 " // Doesn't do anything\n" 834 "}"); 835 verifyFormat("SomeObject\n" 836 " // Calling someFunction on SomeObject\n" 837 " .someFunction();"); 838 verifyFormat("auto result = SomeObject\n" 839 " // Calling someFunction on SomeObject\n" 840 " .someFunction();"); 841 verifyFormat("void f(int i, // some comment (probably for i)\n" 842 " int j, // some comment (probably for j)\n" 843 " int k); // some comment (probably for k)"); 844 verifyFormat("void f(int i,\n" 845 " // some comment (probably for j)\n" 846 " int j,\n" 847 " // some comment (probably for k)\n" 848 " int k);"); 849 850 verifyFormat("int i // This is a fancy variable\n" 851 " = 5; // with nicely aligned comment."); 852 853 verifyFormat("// Leading comment.\n" 854 "int a; // Trailing comment."); 855 verifyFormat("int a; // Trailing comment\n" 856 " // on 2\n" 857 " // or 3 lines.\n" 858 "int b;"); 859 verifyFormat("int a; // Trailing comment\n" 860 "\n" 861 "// Leading comment.\n" 862 "int b;"); 863 verifyFormat("int a; // Comment.\n" 864 " // More details.\n" 865 "int bbbb; // Another comment."); 866 verifyFormat( 867 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 868 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // comment\n" 869 "int cccccccccccccccccccccccccccccc; // comment\n" 870 "int ddd; // looooooooooooooooooooooooong comment\n" 871 "int aaaaaaaaaaaaaaaaaaaaaaa; // comment\n" 872 "int bbbbbbbbbbbbbbbbbbbbb; // comment\n" 873 "int ccccccccccccccccccc; // comment"); 874 875 verifyFormat("#include \"a\" // comment\n" 876 "#include \"a/b/c\" // comment"); 877 verifyFormat("#include <a> // comment\n" 878 "#include <a/b/c> // comment"); 879 EXPECT_EQ("#include \"a\" // comment\n" 880 "#include \"a/b/c\" // comment", 881 format("#include \\\n" 882 " \"a\" // comment\n" 883 "#include \"a/b/c\" // comment")); 884 885 verifyFormat("enum E {\n" 886 " // comment\n" 887 " VAL_A, // comment\n" 888 " VAL_B\n" 889 "};"); 890 891 verifyFormat( 892 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 893 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; // Trailing comment"); 894 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 895 " // Comment inside a statement.\n" 896 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 897 verifyFormat("SomeFunction(a,\n" 898 " // comment\n" 899 " b + x);"); 900 verifyFormat("SomeFunction(a, a,\n" 901 " // comment\n" 902 " b + x);"); 903 verifyFormat( 904 "bool aaaaaaaaaaaaa = // comment\n" 905 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 906 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 907 908 verifyFormat("int aaaa; // aaaaa\n" 909 "int aa; // aaaaaaa", 910 getLLVMStyleWithColumns(20)); 911 912 EXPECT_EQ("void f() { // This does something ..\n" 913 "}\n" 914 "int a; // This is unrelated", 915 format("void f() { // This does something ..\n" 916 " }\n" 917 "int a; // This is unrelated")); 918 EXPECT_EQ("class C {\n" 919 " void f() { // This does something ..\n" 920 " } // awesome..\n" 921 "\n" 922 " int a; // This is unrelated\n" 923 "};", 924 format("class C{void f() { // This does something ..\n" 925 " } // awesome..\n" 926 " \n" 927 "int a; // This is unrelated\n" 928 "};")); 929 930 EXPECT_EQ("int i; // single line trailing comment", 931 format("int i;\\\n// single line trailing comment")); 932 933 verifyGoogleFormat("int a; // Trailing comment."); 934 935 verifyFormat("someFunction(anotherFunction( // Force break.\n" 936 " parameter));"); 937 938 verifyGoogleFormat("#endif // HEADER_GUARD"); 939 940 verifyFormat("const char *test[] = {\n" 941 " // A\n" 942 " \"aaaa\",\n" 943 " // B\n" 944 " \"aaaaa\"};"); 945 verifyGoogleFormat( 946 "aaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 947 " aaaaaaaaaaaaaaaaaaaaaa); // 81_cols_with_this_comment"); 948 EXPECT_EQ("D(a, {\n" 949 " // test\n" 950 " int a;\n" 951 "});", 952 format("D(a, {\n" 953 "// test\n" 954 "int a;\n" 955 "});")); 956 957 EXPECT_EQ("lineWith(); // comment\n" 958 "// at start\n" 959 "otherLine();", 960 format("lineWith(); // comment\n" 961 "// at start\n" 962 "otherLine();")); 963 EXPECT_EQ("lineWith(); // comment\n" 964 " // at start\n" 965 "otherLine();", 966 format("lineWith(); // comment\n" 967 " // at start\n" 968 "otherLine();")); 969 970 EXPECT_EQ("lineWith(); // comment\n" 971 "// at start\n" 972 "otherLine(); // comment", 973 format("lineWith(); // comment\n" 974 "// at start\n" 975 "otherLine(); // comment")); 976 EXPECT_EQ("lineWith();\n" 977 "// at start\n" 978 "otherLine(); // comment", 979 format("lineWith();\n" 980 " // at start\n" 981 "otherLine(); // comment")); 982 EXPECT_EQ("// first\n" 983 "// at start\n" 984 "otherLine(); // comment", 985 format("// first\n" 986 " // at start\n" 987 "otherLine(); // comment")); 988 EXPECT_EQ("f();\n" 989 "// first\n" 990 "// at start\n" 991 "otherLine(); // comment", 992 format("f();\n" 993 "// first\n" 994 " // at start\n" 995 "otherLine(); // comment")); 996 verifyFormat("f(); // comment\n" 997 "// first\n" 998 "// at start\n" 999 "otherLine();"); 1000 EXPECT_EQ("f(); // comment\n" 1001 "// first\n" 1002 "// at start\n" 1003 "otherLine();", 1004 format("f(); // comment\n" 1005 "// first\n" 1006 " // at start\n" 1007 "otherLine();")); 1008 EXPECT_EQ("f(); // comment\n" 1009 " // first\n" 1010 "// at start\n" 1011 "otherLine();", 1012 format("f(); // comment\n" 1013 " // first\n" 1014 "// at start\n" 1015 "otherLine();")); 1016 EXPECT_EQ("void f() {\n" 1017 " lineWith(); // comment\n" 1018 " // at start\n" 1019 "}", 1020 format("void f() {\n" 1021 " lineWith(); // comment\n" 1022 " // at start\n" 1023 "}")); 1024 1025 verifyFormat( 1026 "#define A \\\n" 1027 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 1028 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 1029 getLLVMStyleWithColumns(60)); 1030 verifyFormat( 1031 "#define A \\\n" 1032 " int i; /* iiiiiiiiiiiiiiiiiiiii */ \\\n" 1033 " int jjjjjjjjjjjjjjjjjjjjjjjj; /* */", 1034 getLLVMStyleWithColumns(61)); 1035 1036 verifyFormat("if ( // This is some comment\n" 1037 " x + 3) {\n" 1038 "}"); 1039 EXPECT_EQ("if ( // This is some comment\n" 1040 " // spanning two lines\n" 1041 " x + 3) {\n" 1042 "}", 1043 format("if( // This is some comment\n" 1044 " // spanning two lines\n" 1045 " x + 3) {\n" 1046 "}")); 1047 1048 verifyNoCrash("/\\\n/"); 1049 verifyNoCrash("/\\\n* */"); 1050 } 1051 1052 TEST_F(FormatTest, KeepsParameterWithTrailingCommentsOnTheirOwnLine) { 1053 EXPECT_EQ("SomeFunction(a,\n" 1054 " b, // comment\n" 1055 " c);", 1056 format("SomeFunction(a,\n" 1057 " b, // comment\n" 1058 " c);")); 1059 EXPECT_EQ("SomeFunction(a, b,\n" 1060 " // comment\n" 1061 " c);", 1062 format("SomeFunction(a,\n" 1063 " b,\n" 1064 " // comment\n" 1065 " c);")); 1066 EXPECT_EQ("SomeFunction(a, b, // comment (unclear relation)\n" 1067 " c);", 1068 format("SomeFunction(a, b, // comment (unclear relation)\n" 1069 " c);")); 1070 EXPECT_EQ("SomeFunction(a, // comment\n" 1071 " b,\n" 1072 " c); // comment", 1073 format("SomeFunction(a, // comment\n" 1074 " b,\n" 1075 " c); // comment")); 1076 } 1077 1078 TEST_F(FormatTest, CanFormatCommentsLocally) { 1079 EXPECT_EQ("int a; // comment\n" 1080 "int b; // comment", 1081 format("int a; // comment\n" 1082 "int b; // comment", 1083 0, 0, getLLVMStyle())); 1084 EXPECT_EQ("int a; // comment\n" 1085 " // line 2\n" 1086 "int b;", 1087 format("int a; // comment\n" 1088 " // line 2\n" 1089 "int b;", 1090 28, 0, getLLVMStyle())); 1091 EXPECT_EQ("int aaaaaa; // comment\n" 1092 "int b;\n" 1093 "int c; // unrelated comment", 1094 format("int aaaaaa; // comment\n" 1095 "int b;\n" 1096 "int c; // unrelated comment", 1097 31, 0, getLLVMStyle())); 1098 1099 EXPECT_EQ("int a; // This\n" 1100 " // is\n" 1101 " // a", 1102 format("int a; // This\n" 1103 " // is\n" 1104 " // a", 1105 0, 0, getLLVMStyle())); 1106 EXPECT_EQ("int a; // This\n" 1107 " // is\n" 1108 " // a\n" 1109 "// This is b\n" 1110 "int b;", 1111 format("int a; // This\n" 1112 " // is\n" 1113 " // a\n" 1114 "// This is b\n" 1115 "int b;", 1116 0, 0, getLLVMStyle())); 1117 EXPECT_EQ("int a; // This\n" 1118 " // is\n" 1119 " // a\n" 1120 "\n" 1121 " // This is unrelated", 1122 format("int a; // This\n" 1123 " // is\n" 1124 " // a\n" 1125 "\n" 1126 " // This is unrelated", 1127 0, 0, getLLVMStyle())); 1128 EXPECT_EQ("int a;\n" 1129 "// This is\n" 1130 "// not formatted. ", 1131 format("int a;\n" 1132 "// This is\n" 1133 "// not formatted. ", 1134 0, 0, getLLVMStyle())); 1135 } 1136 1137 TEST_F(FormatTest, RemovesTrailingWhitespaceOfComments) { 1138 EXPECT_EQ("// comment", format("// comment ")); 1139 EXPECT_EQ("int aaaaaaa, bbbbbbb; // comment", 1140 format("int aaaaaaa, bbbbbbb; // comment ", 1141 getLLVMStyleWithColumns(33))); 1142 EXPECT_EQ("// comment\\\n", format("// comment\\\n \t \v \f ")); 1143 EXPECT_EQ("// comment \\\n", format("// comment \\\n \t \v \f ")); 1144 } 1145 1146 TEST_F(FormatTest, UnderstandsBlockComments) { 1147 verifyFormat("f(/*noSpaceAfterParameterNamingComment=*/true);"); 1148 verifyFormat("void f() { g(/*aaa=*/x, /*bbb=*/!y); }"); 1149 EXPECT_EQ("f(aaaaaaaaaaaaaaaaaaaaaaaaa, /* Trailing comment for aa... */\n" 1150 " bbbbbbbbbbbbbbbbbbbbbbbbb);", 1151 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \\\n" 1152 "/* Trailing comment for aa... */\n" 1153 " bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1154 EXPECT_EQ( 1155 "f(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1156 " /* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);", 1157 format("f(aaaaaaaaaaaaaaaaaaaaaaaaa , \n" 1158 "/* Leading comment for bb... */ bbbbbbbbbbbbbbbbbbbbbbbbb);")); 1159 EXPECT_EQ( 1160 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1161 " aaaaaaaaaaaaaaaaaa,\n" 1162 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1163 "}", 1164 format("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1165 " aaaaaaaaaaaaaaaaaa ,\n" 1166 " aaaaaaaaaaaaaaaaaa) { /*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*/\n" 1167 "}")); 1168 1169 FormatStyle NoBinPacking = getLLVMStyle(); 1170 NoBinPacking.BinPackParameters = false; 1171 verifyFormat("aaaaaaaa(/* parameter 1 */ aaaaaa,\n" 1172 " /* parameter 2 */ aaaaaa,\n" 1173 " /* parameter 3 */ aaaaaa,\n" 1174 " /* parameter 4 */ aaaaaa);", 1175 NoBinPacking); 1176 1177 // Aligning block comments in macros. 1178 verifyGoogleFormat("#define A \\\n" 1179 " int i; /*a*/ \\\n" 1180 " int jjj; /*b*/"); 1181 } 1182 1183 TEST_F(FormatTest, AlignsBlockComments) { 1184 EXPECT_EQ("/*\n" 1185 " * Really multi-line\n" 1186 " * comment.\n" 1187 " */\n" 1188 "void f() {}", 1189 format(" /*\n" 1190 " * Really multi-line\n" 1191 " * comment.\n" 1192 " */\n" 1193 " void f() {}")); 1194 EXPECT_EQ("class C {\n" 1195 " /*\n" 1196 " * Another multi-line\n" 1197 " * comment.\n" 1198 " */\n" 1199 " void f() {}\n" 1200 "};", 1201 format("class C {\n" 1202 "/*\n" 1203 " * Another multi-line\n" 1204 " * comment.\n" 1205 " */\n" 1206 "void f() {}\n" 1207 "};")); 1208 EXPECT_EQ("/*\n" 1209 " 1. This is a comment with non-trivial formatting.\n" 1210 " 1.1. We have to indent/outdent all lines equally\n" 1211 " 1.1.1. to keep the formatting.\n" 1212 " */", 1213 format(" /*\n" 1214 " 1. This is a comment with non-trivial formatting.\n" 1215 " 1.1. We have to indent/outdent all lines equally\n" 1216 " 1.1.1. to keep the formatting.\n" 1217 " */")); 1218 EXPECT_EQ("/*\n" 1219 "Don't try to outdent if there's not enough indentation.\n" 1220 "*/", 1221 format(" /*\n" 1222 " Don't try to outdent if there's not enough indentation.\n" 1223 " */")); 1224 1225 EXPECT_EQ("int i; /* Comment with empty...\n" 1226 " *\n" 1227 " * line. */", 1228 format("int i; /* Comment with empty...\n" 1229 " *\n" 1230 " * line. */")); 1231 EXPECT_EQ("int foobar = 0; /* comment */\n" 1232 "int bar = 0; /* multiline\n" 1233 " comment 1 */\n" 1234 "int baz = 0; /* multiline\n" 1235 " comment 2 */\n" 1236 "int bzz = 0; /* multiline\n" 1237 " comment 3 */", 1238 format("int foobar = 0; /* comment */\n" 1239 "int bar = 0; /* multiline\n" 1240 " comment 1 */\n" 1241 "int baz = 0; /* multiline\n" 1242 " comment 2 */\n" 1243 "int bzz = 0; /* multiline\n" 1244 " comment 3 */")); 1245 EXPECT_EQ("int foobar = 0; /* comment */\n" 1246 "int bar = 0; /* multiline\n" 1247 " comment */\n" 1248 "int baz = 0; /* multiline\n" 1249 "comment */", 1250 format("int foobar = 0; /* comment */\n" 1251 "int bar = 0; /* multiline\n" 1252 "comment */\n" 1253 "int baz = 0; /* multiline\n" 1254 "comment */")); 1255 } 1256 1257 TEST_F(FormatTest, CorrectlyHandlesLengthOfBlockComments) { 1258 EXPECT_EQ("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1259 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */", 1260 format("double *x; /* aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 1261 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa */")); 1262 EXPECT_EQ( 1263 "void ffffffffffff(\n" 1264 " int aaaaaaaa, int bbbbbbbb,\n" 1265 " int cccccccccccc) { /*\n" 1266 " aaaaaaaaaa\n" 1267 " aaaaaaaaaaaaa\n" 1268 " bbbbbbbbbbbbbb\n" 1269 " bbbbbbbbbb\n" 1270 " */\n" 1271 "}", 1272 format("void ffffffffffff(int aaaaaaaa, int bbbbbbbb, int cccccccccccc)\n" 1273 "{ /*\n" 1274 " aaaaaaaaaa aaaaaaaaaaaaa\n" 1275 " bbbbbbbbbbbbbb bbbbbbbbbb\n" 1276 " */\n" 1277 "}", 1278 getLLVMStyleWithColumns(40))); 1279 } 1280 1281 TEST_F(FormatTest, DontBreakNonTrailingBlockComments) { 1282 EXPECT_EQ("void ffffffffff(\n" 1283 " int aaaaa /* test */);", 1284 format("void ffffffffff(int aaaaa /* test */);", 1285 getLLVMStyleWithColumns(35))); 1286 } 1287 1288 TEST_F(FormatTest, SplitsLongCxxComments) { 1289 EXPECT_EQ("// A comment that\n" 1290 "// doesn't fit on\n" 1291 "// one line", 1292 format("// A comment that doesn't fit on one line", 1293 getLLVMStyleWithColumns(20))); 1294 EXPECT_EQ("// a b c d\n" 1295 "// e f g\n" 1296 "// h i j k", 1297 format("// a b c d e f g h i j k", 1298 getLLVMStyleWithColumns(10))); 1299 EXPECT_EQ("// a b c d\n" 1300 "// e f g\n" 1301 "// h i j k", 1302 format("\\\n// a b c d e f g h i j k", 1303 getLLVMStyleWithColumns(10))); 1304 EXPECT_EQ("if (true) // A comment that\n" 1305 " // doesn't fit on\n" 1306 " // one line", 1307 format("if (true) // A comment that doesn't fit on one line ", 1308 getLLVMStyleWithColumns(30))); 1309 EXPECT_EQ("// Don't_touch_leading_whitespace", 1310 format("// Don't_touch_leading_whitespace", 1311 getLLVMStyleWithColumns(20))); 1312 EXPECT_EQ("// Add leading\n" 1313 "// whitespace", 1314 format("//Add leading whitespace", getLLVMStyleWithColumns(20))); 1315 EXPECT_EQ("// whitespace", format("//whitespace", getLLVMStyle())); 1316 EXPECT_EQ("// Even if it makes the line exceed the column\n" 1317 "// limit", 1318 format("//Even if it makes the line exceed the column limit", 1319 getLLVMStyleWithColumns(51))); 1320 EXPECT_EQ("//--But not here", format("//--But not here", getLLVMStyle())); 1321 1322 EXPECT_EQ("// aa bb cc dd", 1323 format("// aa bb cc dd ", 1324 getLLVMStyleWithColumns(15))); 1325 1326 EXPECT_EQ("// A comment before\n" 1327 "// a macro\n" 1328 "// definition\n" 1329 "#define a b", 1330 format("// A comment before a macro definition\n" 1331 "#define a b", 1332 getLLVMStyleWithColumns(20))); 1333 EXPECT_EQ("void ffffff(\n" 1334 " int aaaaaaaaa, // wwww\n" 1335 " int bbbbbbbbbb, // xxxxxxx\n" 1336 " // yyyyyyyyyy\n" 1337 " int c, int d, int e) {}", 1338 format("void ffffff(\n" 1339 " int aaaaaaaaa, // wwww\n" 1340 " int bbbbbbbbbb, // xxxxxxx yyyyyyyyyy\n" 1341 " int c, int d, int e) {}", 1342 getLLVMStyleWithColumns(40))); 1343 EXPECT_EQ("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1344 format("//\t aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1345 getLLVMStyleWithColumns(20))); 1346 EXPECT_EQ( 1347 "#define XXX // a b c d\n" 1348 " // e f g h", 1349 format("#define XXX // a b c d e f g h", getLLVMStyleWithColumns(22))); 1350 EXPECT_EQ( 1351 "#define XXX // q w e r\n" 1352 " // t y u i", 1353 format("#define XXX //q w e r t y u i", getLLVMStyleWithColumns(22))); 1354 } 1355 1356 TEST_F(FormatTest, PreservesHangingIndentInCxxComments) { 1357 EXPECT_EQ("// A comment\n" 1358 "// that doesn't\n" 1359 "// fit on one\n" 1360 "// line", 1361 format("// A comment that doesn't fit on one line", 1362 getLLVMStyleWithColumns(20))); 1363 EXPECT_EQ("/// A comment\n" 1364 "/// that doesn't\n" 1365 "/// fit on one\n" 1366 "/// line", 1367 format("/// A comment that doesn't fit on one line", 1368 getLLVMStyleWithColumns(20))); 1369 } 1370 1371 TEST_F(FormatTest, DontSplitLineCommentsWithEscapedNewlines) { 1372 EXPECT_EQ("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1373 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1374 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1375 format("// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1376 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 1377 "// aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")); 1378 EXPECT_EQ("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1379 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1380 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1381 format("int a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1382 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1383 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1384 getLLVMStyleWithColumns(50))); 1385 // FIXME: One day we might want to implement adjustment of leading whitespace 1386 // of the consecutive lines in this kind of comment: 1387 EXPECT_EQ("double\n" 1388 " a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1389 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1390 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1391 format("double a; // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1392 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\\\n" 1393 " // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", 1394 getLLVMStyleWithColumns(49))); 1395 } 1396 1397 TEST_F(FormatTest, DontSplitLineCommentsWithPragmas) { 1398 FormatStyle Pragmas = getLLVMStyleWithColumns(30); 1399 Pragmas.CommentPragmas = "^ IWYU pragma:"; 1400 EXPECT_EQ( 1401 "// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", 1402 format("// IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb", Pragmas)); 1403 EXPECT_EQ( 1404 "/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", 1405 format("/* IWYU pragma: aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb */", Pragmas)); 1406 } 1407 1408 TEST_F(FormatTest, PriorityOfCommentBreaking) { 1409 EXPECT_EQ("if (xxx ==\n" 1410 " yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1411 " zzz)\n" 1412 " q();", 1413 format("if (xxx == yyy && // aaaaaaaaaaaa bbbbbbbbb\n" 1414 " zzz) q();", 1415 getLLVMStyleWithColumns(40))); 1416 EXPECT_EQ("if (xxxxxxxxxx ==\n" 1417 " yyy && // aaaaaa bbbbbbbb cccc\n" 1418 " zzz)\n" 1419 " q();", 1420 format("if (xxxxxxxxxx == yyy && // aaaaaa bbbbbbbb cccc\n" 1421 " zzz) q();", 1422 getLLVMStyleWithColumns(40))); 1423 EXPECT_EQ("if (xxxxxxxxxx &&\n" 1424 " yyy || // aaaaaa bbbbbbbb cccc\n" 1425 " zzz)\n" 1426 " q();", 1427 format("if (xxxxxxxxxx && yyy || // aaaaaa bbbbbbbb cccc\n" 1428 " zzz) q();", 1429 getLLVMStyleWithColumns(40))); 1430 EXPECT_EQ("fffffffff(\n" 1431 " &xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1432 " zzz);", 1433 format("fffffffff(&xxx, // aaaaaaaaaaaa bbbbbbbbbbb\n" 1434 " zzz);", 1435 getLLVMStyleWithColumns(40))); 1436 } 1437 1438 TEST_F(FormatTest, MultiLineCommentsInDefines) { 1439 EXPECT_EQ("#define A(x) /* \\\n" 1440 " a comment \\\n" 1441 " inside */ \\\n" 1442 " f();", 1443 format("#define A(x) /* \\\n" 1444 " a comment \\\n" 1445 " inside */ \\\n" 1446 " f();", 1447 getLLVMStyleWithColumns(17))); 1448 EXPECT_EQ("#define A( \\\n" 1449 " x) /* \\\n" 1450 " a comment \\\n" 1451 " inside */ \\\n" 1452 " f();", 1453 format("#define A( \\\n" 1454 " x) /* \\\n" 1455 " a comment \\\n" 1456 " inside */ \\\n" 1457 " f();", 1458 getLLVMStyleWithColumns(17))); 1459 } 1460 1461 TEST_F(FormatTest, ParsesCommentsAdjacentToPPDirectives) { 1462 EXPECT_EQ("namespace {}\n// Test\n#define A", 1463 format("namespace {}\n // Test\n#define A")); 1464 EXPECT_EQ("namespace {}\n/* Test */\n#define A", 1465 format("namespace {}\n /* Test */\n#define A")); 1466 EXPECT_EQ("namespace {}\n/* Test */ #define A", 1467 format("namespace {}\n /* Test */ #define A")); 1468 } 1469 1470 TEST_F(FormatTest, SplitsLongLinesInComments) { 1471 EXPECT_EQ("/* This is a long\n" 1472 " * comment that\n" 1473 " * doesn't\n" 1474 " * fit on one line.\n" 1475 " */", 1476 format("/* " 1477 "This is a long " 1478 "comment that " 1479 "doesn't " 1480 "fit on one line. */", 1481 getLLVMStyleWithColumns(20))); 1482 EXPECT_EQ("/* a b c d\n" 1483 " * e f g\n" 1484 " * h i j k\n" 1485 " */", 1486 format("/* a b c d e f g h i j k */", 1487 getLLVMStyleWithColumns(10))); 1488 EXPECT_EQ("/* a b c d\n" 1489 " * e f g\n" 1490 " * h i j k\n" 1491 " */", 1492 format("\\\n/* a b c d e f g h i j k */", 1493 getLLVMStyleWithColumns(10))); 1494 EXPECT_EQ("/*\n" 1495 "This is a long\n" 1496 "comment that doesn't\n" 1497 "fit on one line.\n" 1498 "*/", 1499 format("/*\n" 1500 "This is a long " 1501 "comment that doesn't " 1502 "fit on one line. \n" 1503 "*/", getLLVMStyleWithColumns(20))); 1504 EXPECT_EQ("/*\n" 1505 " * This is a long\n" 1506 " * comment that\n" 1507 " * doesn't fit on\n" 1508 " * one line.\n" 1509 " */", 1510 format("/* \n" 1511 " * This is a long " 1512 " comment that " 1513 " doesn't fit on " 1514 " one line. \n" 1515 " */", getLLVMStyleWithColumns(20))); 1516 EXPECT_EQ("/*\n" 1517 " * This_is_a_comment_with_words_that_dont_fit_on_one_line\n" 1518 " * so_it_should_be_broken\n" 1519 " * wherever_a_space_occurs\n" 1520 " */", 1521 format("/*\n" 1522 " * This_is_a_comment_with_words_that_dont_fit_on_one_line " 1523 " so_it_should_be_broken " 1524 " wherever_a_space_occurs \n" 1525 " */", 1526 getLLVMStyleWithColumns(20))); 1527 EXPECT_EQ("/*\n" 1528 " * This_comment_can_not_be_broken_into_lines\n" 1529 " */", 1530 format("/*\n" 1531 " * This_comment_can_not_be_broken_into_lines\n" 1532 " */", 1533 getLLVMStyleWithColumns(20))); 1534 EXPECT_EQ("{\n" 1535 " /*\n" 1536 " This is another\n" 1537 " long comment that\n" 1538 " doesn't fit on one\n" 1539 " line 1234567890\n" 1540 " */\n" 1541 "}", 1542 format("{\n" 1543 "/*\n" 1544 "This is another " 1545 " long comment that " 1546 " doesn't fit on one" 1547 " line 1234567890\n" 1548 "*/\n" 1549 "}", getLLVMStyleWithColumns(20))); 1550 EXPECT_EQ("{\n" 1551 " /*\n" 1552 " * This i s\n" 1553 " * another comment\n" 1554 " * t hat doesn' t\n" 1555 " * fit on one l i\n" 1556 " * n e\n" 1557 " */\n" 1558 "}", 1559 format("{\n" 1560 "/*\n" 1561 " * This i s" 1562 " another comment" 1563 " t hat doesn' t" 1564 " fit on one l i" 1565 " n e\n" 1566 " */\n" 1567 "}", getLLVMStyleWithColumns(20))); 1568 EXPECT_EQ("/*\n" 1569 " * This is a long\n" 1570 " * comment that\n" 1571 " * doesn't fit on\n" 1572 " * one line\n" 1573 " */", 1574 format(" /*\n" 1575 " * This is a long comment that doesn't fit on one line\n" 1576 " */", getLLVMStyleWithColumns(20))); 1577 EXPECT_EQ("{\n" 1578 " if (something) /* This is a\n" 1579 " long\n" 1580 " comment */\n" 1581 " ;\n" 1582 "}", 1583 format("{\n" 1584 " if (something) /* This is a long comment */\n" 1585 " ;\n" 1586 "}", 1587 getLLVMStyleWithColumns(30))); 1588 1589 EXPECT_EQ("/* A comment before\n" 1590 " * a macro\n" 1591 " * definition */\n" 1592 "#define a b", 1593 format("/* A comment before a macro definition */\n" 1594 "#define a b", 1595 getLLVMStyleWithColumns(20))); 1596 1597 EXPECT_EQ("/* some comment\n" 1598 " * a comment\n" 1599 "* that we break\n" 1600 " * another comment\n" 1601 "* we have to break\n" 1602 "* a left comment\n" 1603 " */", 1604 format(" /* some comment\n" 1605 " * a comment that we break\n" 1606 " * another comment we have to break\n" 1607 "* a left comment\n" 1608 " */", 1609 getLLVMStyleWithColumns(20))); 1610 1611 EXPECT_EQ("/*\n" 1612 "\n" 1613 "\n" 1614 " */\n", 1615 format(" /* \n" 1616 " \n" 1617 " \n" 1618 " */\n")); 1619 1620 EXPECT_EQ("/* a a */", 1621 format("/* a a */", getLLVMStyleWithColumns(15))); 1622 EXPECT_EQ("/* a a bc */", 1623 format("/* a a bc */", getLLVMStyleWithColumns(15))); 1624 EXPECT_EQ("/* aaa aaa\n" 1625 " * aaaaa */", 1626 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1627 EXPECT_EQ("/* aaa aaa\n" 1628 " * aaaaa */", 1629 format("/* aaa aaa aaaaa */", getLLVMStyleWithColumns(15))); 1630 } 1631 1632 TEST_F(FormatTest, SplitsLongLinesInCommentsInPreprocessor) { 1633 EXPECT_EQ("#define X \\\n" 1634 " /* \\\n" 1635 " Test \\\n" 1636 " Macro comment \\\n" 1637 " with a long \\\n" 1638 " line \\\n" 1639 " */ \\\n" 1640 " A + B", 1641 format("#define X \\\n" 1642 " /*\n" 1643 " Test\n" 1644 " Macro comment with a long line\n" 1645 " */ \\\n" 1646 " A + B", 1647 getLLVMStyleWithColumns(20))); 1648 EXPECT_EQ("#define X \\\n" 1649 " /* Macro comment \\\n" 1650 " with a long \\\n" 1651 " line */ \\\n" 1652 " A + B", 1653 format("#define X \\\n" 1654 " /* Macro comment with a long\n" 1655 " line */ \\\n" 1656 " A + B", 1657 getLLVMStyleWithColumns(20))); 1658 EXPECT_EQ("#define X \\\n" 1659 " /* Macro comment \\\n" 1660 " * with a long \\\n" 1661 " * line */ \\\n" 1662 " A + B", 1663 format("#define X \\\n" 1664 " /* Macro comment with a long line */ \\\n" 1665 " A + B", 1666 getLLVMStyleWithColumns(20))); 1667 } 1668 1669 TEST_F(FormatTest, CommentsInStaticInitializers) { 1670 EXPECT_EQ( 1671 "static SomeType type = {aaaaaaaaaaaaaaaaaaaa, /* comment */\n" 1672 " aaaaaaaaaaaaaaaaaaaa /* comment */,\n" 1673 " /* comment */ aaaaaaaaaaaaaaaaaaaa,\n" 1674 " aaaaaaaaaaaaaaaaaaaa, // comment\n" 1675 " aaaaaaaaaaaaaaaaaaaa};", 1676 format("static SomeType type = { aaaaaaaaaaaaaaaaaaaa , /* comment */\n" 1677 " aaaaaaaaaaaaaaaaaaaa /* comment */ ,\n" 1678 " /* comment */ aaaaaaaaaaaaaaaaaaaa ,\n" 1679 " aaaaaaaaaaaaaaaaaaaa , // comment\n" 1680 " aaaaaaaaaaaaaaaaaaaa };")); 1681 verifyFormat("static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1682 " bbbbbbbbbbb, ccccccccccc};"); 1683 verifyFormat("static SomeType type = {aaaaaaaaaaa,\n" 1684 " // comment for bb....\n" 1685 " bbbbbbbbbbb, ccccccccccc};"); 1686 verifyGoogleFormat( 1687 "static SomeType type = {aaaaaaaaaaa, // comment for aa...\n" 1688 " bbbbbbbbbbb, ccccccccccc};"); 1689 verifyGoogleFormat("static SomeType type = {aaaaaaaaaaa,\n" 1690 " // comment for bb....\n" 1691 " bbbbbbbbbbb, ccccccccccc};"); 1692 1693 verifyFormat("S s = {{a, b, c}, // Group #1\n" 1694 " {d, e, f}, // Group #2\n" 1695 " {g, h, i}}; // Group #3"); 1696 verifyFormat("S s = {{// Group #1\n" 1697 " a, b, c},\n" 1698 " {// Group #2\n" 1699 " d, e, f},\n" 1700 " {// Group #3\n" 1701 " g, h, i}};"); 1702 1703 EXPECT_EQ("S s = {\n" 1704 " // Some comment\n" 1705 " a,\n" 1706 "\n" 1707 " // Comment after empty line\n" 1708 " b}", 1709 format("S s = {\n" 1710 " // Some comment\n" 1711 " a,\n" 1712 " \n" 1713 " // Comment after empty line\n" 1714 " b\n" 1715 "}")); 1716 EXPECT_EQ("S s = {\n" 1717 " /* Some comment */\n" 1718 " a,\n" 1719 "\n" 1720 " /* Comment after empty line */\n" 1721 " b}", 1722 format("S s = {\n" 1723 " /* Some comment */\n" 1724 " a,\n" 1725 " \n" 1726 " /* Comment after empty line */\n" 1727 " b\n" 1728 "}")); 1729 verifyFormat("const uint8_t aaaaaaaaaaaaaaaaaaaaaa[0] = {\n" 1730 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1731 " 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n" 1732 " 0x00, 0x00, 0x00, 0x00}; // comment\n"); 1733 } 1734 1735 TEST_F(FormatTest, IgnoresIf0Contents) { 1736 EXPECT_EQ("#if 0\n" 1737 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1738 "#endif\n" 1739 "void f() {}", 1740 format("#if 0\n" 1741 "}{)(&*(^%%#%@! fsadj f;ldjs ,:;| <<<>>>][)(][\n" 1742 "#endif\n" 1743 "void f( ) { }")); 1744 EXPECT_EQ("#if false\n" 1745 "void f( ) { }\n" 1746 "#endif\n" 1747 "void g() {}\n", 1748 format("#if false\n" 1749 "void f( ) { }\n" 1750 "#endif\n" 1751 "void g( ) { }\n")); 1752 EXPECT_EQ("enum E {\n" 1753 " One,\n" 1754 " Two,\n" 1755 "#if 0\n" 1756 "Three,\n" 1757 " Four,\n" 1758 "#endif\n" 1759 " Five\n" 1760 "};", 1761 format("enum E {\n" 1762 " One,Two,\n" 1763 "#if 0\n" 1764 "Three,\n" 1765 " Four,\n" 1766 "#endif\n" 1767 " Five};")); 1768 EXPECT_EQ("enum F {\n" 1769 " One,\n" 1770 "#if 1\n" 1771 " Two,\n" 1772 "#if 0\n" 1773 "Three,\n" 1774 " Four,\n" 1775 "#endif\n" 1776 " Five\n" 1777 "#endif\n" 1778 "};", 1779 format("enum F {\n" 1780 "One,\n" 1781 "#if 1\n" 1782 "Two,\n" 1783 "#if 0\n" 1784 "Three,\n" 1785 " Four,\n" 1786 "#endif\n" 1787 "Five\n" 1788 "#endif\n" 1789 "};")); 1790 EXPECT_EQ("enum G {\n" 1791 " One,\n" 1792 "#if 0\n" 1793 "Two,\n" 1794 "#else\n" 1795 " Three,\n" 1796 "#endif\n" 1797 " Four\n" 1798 "};", 1799 format("enum G {\n" 1800 "One,\n" 1801 "#if 0\n" 1802 "Two,\n" 1803 "#else\n" 1804 "Three,\n" 1805 "#endif\n" 1806 "Four\n" 1807 "};")); 1808 EXPECT_EQ("enum H {\n" 1809 " One,\n" 1810 "#if 0\n" 1811 "#ifdef Q\n" 1812 "Two,\n" 1813 "#else\n" 1814 "Three,\n" 1815 "#endif\n" 1816 "#endif\n" 1817 " Four\n" 1818 "};", 1819 format("enum H {\n" 1820 "One,\n" 1821 "#if 0\n" 1822 "#ifdef Q\n" 1823 "Two,\n" 1824 "#else\n" 1825 "Three,\n" 1826 "#endif\n" 1827 "#endif\n" 1828 "Four\n" 1829 "};")); 1830 EXPECT_EQ("enum I {\n" 1831 " One,\n" 1832 "#if /* test */ 0 || 1\n" 1833 "Two,\n" 1834 "Three,\n" 1835 "#endif\n" 1836 " Four\n" 1837 "};", 1838 format("enum I {\n" 1839 "One,\n" 1840 "#if /* test */ 0 || 1\n" 1841 "Two,\n" 1842 "Three,\n" 1843 "#endif\n" 1844 "Four\n" 1845 "};")); 1846 EXPECT_EQ("enum J {\n" 1847 " One,\n" 1848 "#if 0\n" 1849 "#if 0\n" 1850 "Two,\n" 1851 "#else\n" 1852 "Three,\n" 1853 "#endif\n" 1854 "Four,\n" 1855 "#endif\n" 1856 " Five\n" 1857 "};", 1858 format("enum J {\n" 1859 "One,\n" 1860 "#if 0\n" 1861 "#if 0\n" 1862 "Two,\n" 1863 "#else\n" 1864 "Three,\n" 1865 "#endif\n" 1866 "Four,\n" 1867 "#endif\n" 1868 "Five\n" 1869 "};")); 1870 1871 } 1872 1873 //===----------------------------------------------------------------------===// 1874 // Tests for classes, namespaces, etc. 1875 //===----------------------------------------------------------------------===// 1876 1877 TEST_F(FormatTest, DoesNotBreakSemiAfterClassDecl) { 1878 verifyFormat("class A {};"); 1879 } 1880 1881 TEST_F(FormatTest, UnderstandsAccessSpecifiers) { 1882 verifyFormat("class A {\n" 1883 "public:\n" 1884 "public: // comment\n" 1885 "protected:\n" 1886 "private:\n" 1887 " void f() {}\n" 1888 "};"); 1889 verifyGoogleFormat("class A {\n" 1890 " public:\n" 1891 " protected:\n" 1892 " private:\n" 1893 " void f() {}\n" 1894 "};"); 1895 verifyFormat("class A {\n" 1896 "public slots:\n" 1897 " void f() {}\n" 1898 "public Q_SLOTS:\n" 1899 " void f() {}\n" 1900 "signals:\n" 1901 " void g();\n" 1902 "};"); 1903 } 1904 1905 TEST_F(FormatTest, SeparatesLogicalBlocks) { 1906 EXPECT_EQ("class A {\n" 1907 "public:\n" 1908 " void f();\n" 1909 "\n" 1910 "private:\n" 1911 " void g() {}\n" 1912 " // test\n" 1913 "protected:\n" 1914 " int h;\n" 1915 "};", 1916 format("class A {\n" 1917 "public:\n" 1918 "void f();\n" 1919 "private:\n" 1920 "void g() {}\n" 1921 "// test\n" 1922 "protected:\n" 1923 "int h;\n" 1924 "};")); 1925 EXPECT_EQ("class A {\n" 1926 "protected:\n" 1927 "public:\n" 1928 " void f();\n" 1929 "};", 1930 format("class A {\n" 1931 "protected:\n" 1932 "\n" 1933 "public:\n" 1934 "\n" 1935 " void f();\n" 1936 "};")); 1937 1938 // Even ensure proper spacing inside macros. 1939 EXPECT_EQ("#define B \\\n" 1940 " class A { \\\n" 1941 " protected: \\\n" 1942 " public: \\\n" 1943 " void f(); \\\n" 1944 " };", 1945 format("#define B \\\n" 1946 " class A { \\\n" 1947 " protected: \\\n" 1948 " \\\n" 1949 " public: \\\n" 1950 " \\\n" 1951 " void f(); \\\n" 1952 " };", 1953 getGoogleStyle())); 1954 // But don't remove empty lines after macros ending in access specifiers. 1955 EXPECT_EQ("#define A private:\n" 1956 "\n" 1957 "int i;", 1958 format("#define A private:\n" 1959 "\n" 1960 "int i;")); 1961 } 1962 1963 TEST_F(FormatTest, FormatsClasses) { 1964 verifyFormat("class A : public B {};"); 1965 verifyFormat("class A : public ::B {};"); 1966 1967 verifyFormat( 1968 "class AAAAAAAAAAAAAAAAAAAA : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 1969 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 1970 verifyFormat("class AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\n" 1971 " : public BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB,\n" 1972 " public CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC {};"); 1973 verifyFormat( 1974 "class A : public B, public C, public D, public E, public F {};"); 1975 verifyFormat("class AAAAAAAAAAAA : public B,\n" 1976 " public C,\n" 1977 " public D,\n" 1978 " public E,\n" 1979 " public F,\n" 1980 " public G {};"); 1981 1982 verifyFormat("class\n" 1983 " ReallyReallyLongClassName {\n" 1984 " int i;\n" 1985 "};", 1986 getLLVMStyleWithColumns(32)); 1987 verifyFormat("struct aaaaaaaaaaaaa : public aaaaaaaaaaaaaaaaaaa< // break\n" 1988 " aaaaaaaaaaaaaaaa> {};"); 1989 verifyFormat("struct aaaaaaaaaaaaaaaaaaaa\n" 1990 " : public aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaa,\n" 1991 " aaaaaaaaaaaaaaaaaaaaaa> {};"); 1992 verifyFormat("template <class R, class C>\n" 1993 "struct Aaaaaaaaaaaaaaaaa<R (C::*)(int) const>\n" 1994 " : Aaaaaaaaaaaaaaaaa<R (C::*)(int)> {};"); 1995 verifyFormat("class ::A::B {};"); 1996 } 1997 1998 TEST_F(FormatTest, FormatsVariableDeclarationsAfterStructOrClass) { 1999 verifyFormat("class A {\n} a, b;"); 2000 verifyFormat("struct A {\n} a, b;"); 2001 verifyFormat("union A {\n} a;"); 2002 } 2003 2004 TEST_F(FormatTest, FormatsEnum) { 2005 verifyFormat("enum {\n" 2006 " Zero,\n" 2007 " One = 1,\n" 2008 " Two = One + 1,\n" 2009 " Three = (One + Two),\n" 2010 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2011 " Five = (One, Two, Three, Four, 5)\n" 2012 "};"); 2013 verifyGoogleFormat("enum {\n" 2014 " Zero,\n" 2015 " One = 1,\n" 2016 " Two = One + 1,\n" 2017 " Three = (One + Two),\n" 2018 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2019 " Five = (One, Two, Three, Four, 5)\n" 2020 "};"); 2021 verifyFormat("enum Enum {};"); 2022 verifyFormat("enum {};"); 2023 verifyFormat("enum X E {} d;"); 2024 verifyFormat("enum __attribute__((...)) E {} d;"); 2025 verifyFormat("enum __declspec__((...)) E {} d;"); 2026 verifyFormat("enum X f() {\n a();\n return 42;\n}"); 2027 verifyFormat("enum {\n" 2028 " Bar = Foo<int, int>::value\n" 2029 "};", 2030 getLLVMStyleWithColumns(30)); 2031 2032 verifyFormat("enum ShortEnum { A, B, C };"); 2033 verifyGoogleFormat("enum ShortEnum { A, B, C };"); 2034 2035 EXPECT_EQ("enum KeepEmptyLines {\n" 2036 " ONE,\n" 2037 "\n" 2038 " TWO,\n" 2039 "\n" 2040 " THREE\n" 2041 "}", 2042 format("enum KeepEmptyLines {\n" 2043 " ONE,\n" 2044 "\n" 2045 " TWO,\n" 2046 "\n" 2047 "\n" 2048 " THREE\n" 2049 "}")); 2050 verifyFormat("enum E { // comment\n" 2051 " ONE,\n" 2052 " TWO\n" 2053 "};\n" 2054 "int i;"); 2055 } 2056 2057 TEST_F(FormatTest, FormatsEnumsWithErrors) { 2058 verifyFormat("enum Type {\n" 2059 " One = 0; // These semicolons should be commas.\n" 2060 " Two = 1;\n" 2061 "};"); 2062 verifyFormat("namespace n {\n" 2063 "enum Type {\n" 2064 " One,\n" 2065 " Two, // missing };\n" 2066 " int i;\n" 2067 "}\n" 2068 "void g() {}"); 2069 } 2070 2071 TEST_F(FormatTest, FormatsEnumStruct) { 2072 verifyFormat("enum struct {\n" 2073 " Zero,\n" 2074 " One = 1,\n" 2075 " Two = One + 1,\n" 2076 " Three = (One + Two),\n" 2077 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2078 " Five = (One, Two, Three, Four, 5)\n" 2079 "};"); 2080 verifyFormat("enum struct Enum {};"); 2081 verifyFormat("enum struct {};"); 2082 verifyFormat("enum struct X E {} d;"); 2083 verifyFormat("enum struct __attribute__((...)) E {} d;"); 2084 verifyFormat("enum struct __declspec__((...)) E {} d;"); 2085 verifyFormat("enum struct X f() {\n a();\n return 42;\n}"); 2086 } 2087 2088 TEST_F(FormatTest, FormatsEnumClass) { 2089 verifyFormat("enum class {\n" 2090 " Zero,\n" 2091 " One = 1,\n" 2092 " Two = One + 1,\n" 2093 " Three = (One + Two),\n" 2094 " Four = (Zero && (One ^ Two)) | (One << Two),\n" 2095 " Five = (One, Two, Three, Four, 5)\n" 2096 "};"); 2097 verifyFormat("enum class Enum {};"); 2098 verifyFormat("enum class {};"); 2099 verifyFormat("enum class X E {} d;"); 2100 verifyFormat("enum class __attribute__((...)) E {} d;"); 2101 verifyFormat("enum class __declspec__((...)) E {} d;"); 2102 verifyFormat("enum class X f() {\n a();\n return 42;\n}"); 2103 } 2104 2105 TEST_F(FormatTest, FormatsEnumTypes) { 2106 verifyFormat("enum X : int {\n" 2107 " A, // Force multiple lines.\n" 2108 " B\n" 2109 "};"); 2110 verifyFormat("enum X : int { A, B };"); 2111 verifyFormat("enum X : std::uint32_t { A, B };"); 2112 } 2113 2114 TEST_F(FormatTest, FormatsNSEnums) { 2115 verifyGoogleFormat("typedef NS_ENUM(NSInteger, SomeName) { AAA, BBB }"); 2116 verifyGoogleFormat("typedef NS_ENUM(NSInteger, MyType) {\n" 2117 " // Information about someDecentlyLongValue.\n" 2118 " someDecentlyLongValue,\n" 2119 " // Information about anotherDecentlyLongValue.\n" 2120 " anotherDecentlyLongValue,\n" 2121 " // Information about aThirdDecentlyLongValue.\n" 2122 " aThirdDecentlyLongValue\n" 2123 "};"); 2124 verifyGoogleFormat("typedef NS_OPTIONS(NSInteger, MyType) {\n" 2125 " a = 1,\n" 2126 " b = 2,\n" 2127 " c = 3,\n" 2128 "};"); 2129 verifyGoogleFormat("typedef CF_ENUM(NSInteger, MyType) {\n" 2130 " a = 1,\n" 2131 " b = 2,\n" 2132 " c = 3,\n" 2133 "};"); 2134 verifyGoogleFormat("typedef CF_OPTIONS(NSInteger, MyType) {\n" 2135 " a = 1,\n" 2136 " b = 2,\n" 2137 " c = 3,\n" 2138 "};"); 2139 } 2140 2141 TEST_F(FormatTest, FormatsBitfields) { 2142 verifyFormat("struct Bitfields {\n" 2143 " unsigned sClass : 8;\n" 2144 " unsigned ValueKind : 2;\n" 2145 "};"); 2146 verifyFormat("struct A {\n" 2147 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa : 1,\n" 2148 " bbbbbbbbbbbbbbbbbbbbbbbbb;\n" 2149 "};"); 2150 verifyFormat("struct MyStruct {\n" 2151 " uchar data;\n" 2152 " uchar : 8;\n" 2153 " uchar : 8;\n" 2154 " uchar other;\n" 2155 "};"); 2156 } 2157 2158 TEST_F(FormatTest, FormatsNamespaces) { 2159 verifyFormat("namespace some_namespace {\n" 2160 "class A {};\n" 2161 "void f() { f(); }\n" 2162 "}"); 2163 verifyFormat("namespace {\n" 2164 "class A {};\n" 2165 "void f() { f(); }\n" 2166 "}"); 2167 verifyFormat("inline namespace X {\n" 2168 "class A {};\n" 2169 "void f() { f(); }\n" 2170 "}"); 2171 verifyFormat("using namespace some_namespace;\n" 2172 "class A {};\n" 2173 "void f() { f(); }"); 2174 2175 // This code is more common than we thought; if we 2176 // layout this correctly the semicolon will go into 2177 // its own line, which is undesirable. 2178 verifyFormat("namespace {};"); 2179 verifyFormat("namespace {\n" 2180 "class A {};\n" 2181 "};"); 2182 2183 verifyFormat("namespace {\n" 2184 "int SomeVariable = 0; // comment\n" 2185 "} // namespace"); 2186 EXPECT_EQ("#ifndef HEADER_GUARD\n" 2187 "#define HEADER_GUARD\n" 2188 "namespace my_namespace {\n" 2189 "int i;\n" 2190 "} // my_namespace\n" 2191 "#endif // HEADER_GUARD", 2192 format("#ifndef HEADER_GUARD\n" 2193 " #define HEADER_GUARD\n" 2194 " namespace my_namespace {\n" 2195 "int i;\n" 2196 "} // my_namespace\n" 2197 "#endif // HEADER_GUARD")); 2198 2199 FormatStyle Style = getLLVMStyle(); 2200 Style.NamespaceIndentation = FormatStyle::NI_All; 2201 EXPECT_EQ("namespace out {\n" 2202 " int i;\n" 2203 " namespace in {\n" 2204 " int i;\n" 2205 " } // namespace\n" 2206 "} // namespace", 2207 format("namespace out {\n" 2208 "int i;\n" 2209 "namespace in {\n" 2210 "int i;\n" 2211 "} // namespace\n" 2212 "} // namespace", 2213 Style)); 2214 2215 Style.NamespaceIndentation = FormatStyle::NI_Inner; 2216 EXPECT_EQ("namespace out {\n" 2217 "int i;\n" 2218 "namespace in {\n" 2219 " int i;\n" 2220 "} // namespace\n" 2221 "} // namespace", 2222 format("namespace out {\n" 2223 "int i;\n" 2224 "namespace in {\n" 2225 "int i;\n" 2226 "} // namespace\n" 2227 "} // namespace", 2228 Style)); 2229 } 2230 2231 TEST_F(FormatTest, FormatsExternC) { verifyFormat("extern \"C\" {\nint a;"); } 2232 2233 TEST_F(FormatTest, FormatsInlineASM) { 2234 verifyFormat("asm(\"xyz\" : \"=a\"(a), \"=d\"(b) : \"a\"(data));"); 2235 verifyFormat("asm(\"nop\" ::: \"memory\");"); 2236 verifyFormat( 2237 "asm(\"movq\\t%%rbx, %%rsi\\n\\t\"\n" 2238 " \"cpuid\\n\\t\"\n" 2239 " \"xchgq\\t%%rbx, %%rsi\\n\\t\"\n" 2240 " : \"=a\"(*rEAX), \"=S\"(*rEBX), \"=c\"(*rECX), \"=d\"(*rEDX)\n" 2241 " : \"a\"(value));"); 2242 EXPECT_EQ( 2243 "void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2244 " __asm {\n" 2245 " mov edx,[that] // vtable in edx\n" 2246 " mov eax,methodIndex\n" 2247 " call [edx][eax*4] // stdcall\n" 2248 " }\n" 2249 "}", 2250 format("void NS_InvokeByIndex(void *that, unsigned int methodIndex) {\n" 2251 " __asm {\n" 2252 " mov edx,[that] // vtable in edx\n" 2253 " mov eax,methodIndex\n" 2254 " call [edx][eax*4] // stdcall\n" 2255 " }\n" 2256 "}")); 2257 verifyFormat("void function() {\n" 2258 " // comment\n" 2259 " asm(\"\");\n" 2260 "}"); 2261 } 2262 2263 TEST_F(FormatTest, FormatTryCatch) { 2264 verifyFormat("try {\n" 2265 " throw a * b;\n" 2266 "} catch (int a) {\n" 2267 " // Do nothing.\n" 2268 "} catch (...) {\n" 2269 " exit(42);\n" 2270 "}"); 2271 2272 // Function-level try statements. 2273 verifyFormat("int f() try { return 4; } catch (...) {\n" 2274 " return 5;\n" 2275 "}"); 2276 verifyFormat("class A {\n" 2277 " int a;\n" 2278 " A() try : a(0) {\n" 2279 " } catch (...) {\n" 2280 " throw;\n" 2281 " }\n" 2282 "};\n"); 2283 2284 // Incomplete try-catch blocks. 2285 verifyFormat("try {} catch ("); 2286 } 2287 2288 TEST_F(FormatTest, FormatSEHTryCatch) { 2289 verifyFormat("__try {\n" 2290 " int a = b * c;\n" 2291 "} __except (EXCEPTION_EXECUTE_HANDLER) {\n" 2292 " // Do nothing.\n" 2293 "}"); 2294 2295 verifyFormat("__try {\n" 2296 " int a = b * c;\n" 2297 "} __finally {\n" 2298 " // Do nothing.\n" 2299 "}"); 2300 2301 verifyFormat("DEBUG({\n" 2302 " __try {\n" 2303 " } __finally {\n" 2304 " }\n" 2305 "});\n"); 2306 } 2307 2308 TEST_F(FormatTest, IncompleteTryCatchBlocks) { 2309 verifyFormat("try {\n" 2310 " f();\n" 2311 "} catch {\n" 2312 " g();\n" 2313 "}"); 2314 verifyFormat("try {\n" 2315 " f();\n" 2316 "} catch (A a) MACRO(x) {\n" 2317 " g();\n" 2318 "} catch (B b) MACRO(x) {\n" 2319 " g();\n" 2320 "}"); 2321 } 2322 2323 TEST_F(FormatTest, FormatTryCatchBraceStyles) { 2324 FormatStyle Style = getLLVMStyle(); 2325 Style.BreakBeforeBraces = FormatStyle::BS_Attach; 2326 verifyFormat("try {\n" 2327 " // something\n" 2328 "} catch (...) {\n" 2329 " // something\n" 2330 "}", 2331 Style); 2332 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 2333 verifyFormat("try {\n" 2334 " // something\n" 2335 "}\n" 2336 "catch (...) {\n" 2337 " // something\n" 2338 "}", 2339 Style); 2340 verifyFormat("__try {\n" 2341 " // something\n" 2342 "}\n" 2343 "__finally {\n" 2344 " // something\n" 2345 "}", 2346 Style); 2347 verifyFormat("@try {\n" 2348 " // something\n" 2349 "}\n" 2350 "@finally {\n" 2351 " // something\n" 2352 "}", 2353 Style); 2354 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 2355 verifyFormat("try\n" 2356 "{\n" 2357 " // something\n" 2358 "}\n" 2359 "catch (...)\n" 2360 "{\n" 2361 " // something\n" 2362 "}", 2363 Style); 2364 Style.BreakBeforeBraces = FormatStyle::BS_GNU; 2365 verifyFormat("try\n" 2366 " {\n" 2367 " // something\n" 2368 " }\n" 2369 "catch (...)\n" 2370 " {\n" 2371 " // something\n" 2372 " }", 2373 Style); 2374 } 2375 2376 TEST_F(FormatTest, FormatObjCTryCatch) { 2377 verifyFormat("@try {\n" 2378 " f();\n" 2379 "} @catch (NSException e) {\n" 2380 " @throw;\n" 2381 "} @finally {\n" 2382 " exit(42);\n" 2383 "}"); 2384 verifyFormat("DEBUG({\n" 2385 " @try {\n" 2386 " } @finally {\n" 2387 " }\n" 2388 "});\n"); 2389 } 2390 2391 TEST_F(FormatTest, StaticInitializers) { 2392 verifyFormat("static SomeClass SC = {1, 'a'};"); 2393 2394 verifyFormat( 2395 "static SomeClass WithALoooooooooooooooooooongName = {\n" 2396 " 100000000, \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"};"); 2397 2398 // Here, everything other than the "}" would fit on a line. 2399 verifyFormat("static int LooooooooooooooooooooooooongVariable[1] = {\n" 2400 " 10000000000000000000000000};"); 2401 EXPECT_EQ("S s = {a,\n" 2402 "\n" 2403 " b};", 2404 format("S s = {\n" 2405 " a,\n" 2406 "\n" 2407 " b\n" 2408 "};")); 2409 2410 // FIXME: This would fit into the column limit if we'd fit "{ {" on the first 2411 // line. However, the formatting looks a bit off and this probably doesn't 2412 // happen often in practice. 2413 verifyFormat("static int Variable[1] = {\n" 2414 " {1000000000000000000000000000000000000}};", 2415 getLLVMStyleWithColumns(40)); 2416 } 2417 2418 TEST_F(FormatTest, DesignatedInitializers) { 2419 verifyFormat("const struct A a = {.a = 1, .b = 2};"); 2420 verifyFormat("const struct A a = {.aaaaaaaaaa = 1,\n" 2421 " .bbbbbbbbbb = 2,\n" 2422 " .cccccccccc = 3,\n" 2423 " .dddddddddd = 4,\n" 2424 " .eeeeeeeeee = 5};"); 2425 verifyFormat("const struct Aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa = {\n" 2426 " .aaaaaaaaaaaaaaaaaaaaaaaaaaa = 1,\n" 2427 " .bbbbbbbbbbbbbbbbbbbbbbbbbbb = 2,\n" 2428 " .ccccccccccccccccccccccccccc = 3,\n" 2429 " .ddddddddddddddddddddddddddd = 4,\n" 2430 " .eeeeeeeeeeeeeeeeeeeeeeeeeee = 5};"); 2431 2432 verifyGoogleFormat("const struct A a = {.a = 1, .b = 2};"); 2433 } 2434 2435 TEST_F(FormatTest, NestedStaticInitializers) { 2436 verifyFormat("static A x = {{{}}};\n"); 2437 verifyFormat("static A x = {{{init1, init2, init3, init4},\n" 2438 " {init1, init2, init3, init4}}};", 2439 getLLVMStyleWithColumns(50)); 2440 2441 verifyFormat("somes Status::global_reps[3] = {\n" 2442 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2443 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2444 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};", 2445 getLLVMStyleWithColumns(60)); 2446 verifyGoogleFormat("SomeType Status::global_reps[3] = {\n" 2447 " {kGlobalRef, OK_CODE, NULL, NULL, NULL},\n" 2448 " {kGlobalRef, CANCELLED_CODE, NULL, NULL, NULL},\n" 2449 " {kGlobalRef, UNKNOWN_CODE, NULL, NULL, NULL}};"); 2450 verifyFormat( 2451 "CGRect cg_rect = {{rect.fLeft, rect.fTop},\n" 2452 " {rect.fRight - rect.fLeft, rect.fBottom - rect.fTop}};"); 2453 2454 verifyFormat( 2455 "SomeArrayOfSomeType a = {\n" 2456 " {{1, 2, 3},\n" 2457 " {1, 2, 3},\n" 2458 " {111111111111111111111111111111, 222222222222222222222222222222,\n" 2459 " 333333333333333333333333333333},\n" 2460 " {1, 2, 3},\n" 2461 " {1, 2, 3}}};"); 2462 verifyFormat( 2463 "SomeArrayOfSomeType a = {\n" 2464 " {{1, 2, 3}},\n" 2465 " {{1, 2, 3}},\n" 2466 " {{111111111111111111111111111111, 222222222222222222222222222222,\n" 2467 " 333333333333333333333333333333}},\n" 2468 " {{1, 2, 3}},\n" 2469 " {{1, 2, 3}}};"); 2470 2471 verifyFormat( 2472 "struct {\n" 2473 " unsigned bit;\n" 2474 " const char *const name;\n" 2475 "} kBitsToOs[] = {{kOsMac, \"Mac\"},\n" 2476 " {kOsWin, \"Windows\"},\n" 2477 " {kOsLinux, \"Linux\"},\n" 2478 " {kOsCrOS, \"Chrome OS\"}};"); 2479 verifyFormat( 2480 "struct {\n" 2481 " unsigned bit;\n" 2482 " const char *const name;\n" 2483 "} kBitsToOs[] = {\n" 2484 " {kOsMac, \"Mac\"},\n" 2485 " {kOsWin, \"Windows\"},\n" 2486 " {kOsLinux, \"Linux\"},\n" 2487 " {kOsCrOS, \"Chrome OS\"},\n" 2488 "};"); 2489 } 2490 2491 TEST_F(FormatTest, FormatsSmallMacroDefinitionsInSingleLine) { 2492 verifyFormat("#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2493 " \\\n" 2494 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)"); 2495 } 2496 2497 TEST_F(FormatTest, DoesNotBreakPureVirtualFunctionDefinition) { 2498 verifyFormat("virtual void write(ELFWriter *writerrr,\n" 2499 " OwningPtr<FileOutputBuffer> &buffer) = 0;"); 2500 } 2501 2502 TEST_F(FormatTest, BreaksStringLiteralsOnlyInDefine) { 2503 verifyFormat("# 1111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\" 2 3", 2504 getLLVMStyleWithColumns(40)); 2505 verifyFormat("#line 11111 \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2506 getLLVMStyleWithColumns(40)); 2507 EXPECT_EQ("#define Q \\\n" 2508 " \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/\" \\\n" 2509 " \"aaaaaaaa.cpp\"", 2510 format("#define Q \"/aaaaaaaaa/aaaaaaaaaaaaaaaaaaa/aaaaaaaa.cpp\"", 2511 getLLVMStyleWithColumns(40))); 2512 } 2513 2514 TEST_F(FormatTest, UnderstandsLinePPDirective) { 2515 EXPECT_EQ("# 123 \"A string literal\"", 2516 format(" # 123 \"A string literal\"")); 2517 } 2518 2519 TEST_F(FormatTest, LayoutUnknownPPDirective) { 2520 EXPECT_EQ("#;", format("#;")); 2521 verifyFormat("#\n;\n;\n;"); 2522 } 2523 2524 TEST_F(FormatTest, UnescapedEndOfLineEndsPPDirective) { 2525 EXPECT_EQ("#line 42 \"test\"\n", 2526 format("# \\\n line \\\n 42 \\\n \"test\"\n")); 2527 EXPECT_EQ("#define A B\n", format("# \\\n define \\\n A \\\n B\n", 2528 getLLVMStyleWithColumns(12))); 2529 } 2530 2531 TEST_F(FormatTest, EndOfFileEndsPPDirective) { 2532 EXPECT_EQ("#line 42 \"test\"", 2533 format("# \\\n line \\\n 42 \\\n \"test\"")); 2534 EXPECT_EQ("#define A B", format("# \\\n define \\\n A \\\n B")); 2535 } 2536 2537 TEST_F(FormatTest, DoesntRemoveUnknownTokens) { 2538 verifyFormat("#define A \\x20"); 2539 verifyFormat("#define A \\ x20"); 2540 EXPECT_EQ("#define A \\ x20", format("#define A \\ x20")); 2541 verifyFormat("#define A ''"); 2542 verifyFormat("#define A ''qqq"); 2543 verifyFormat("#define A `qqq"); 2544 verifyFormat("f(\"aaaa, bbbb, \"\\\"ccccc\\\"\");"); 2545 EXPECT_EQ("const char *c = STRINGIFY(\n" 2546 "\\na : b);", 2547 format("const char * c = STRINGIFY(\n" 2548 "\\na : b);")); 2549 2550 verifyFormat("a\r\\"); 2551 verifyFormat("a\v\\"); 2552 verifyFormat("a\f\\"); 2553 } 2554 2555 TEST_F(FormatTest, IndentsPPDirectiveInReducedSpace) { 2556 verifyFormat("#define A(BB)", getLLVMStyleWithColumns(13)); 2557 verifyFormat("#define A( \\\n BB)", getLLVMStyleWithColumns(12)); 2558 verifyFormat("#define A( \\\n A, B)", getLLVMStyleWithColumns(12)); 2559 // FIXME: We never break before the macro name. 2560 verifyFormat("#define AA( \\\n B)", getLLVMStyleWithColumns(12)); 2561 2562 verifyFormat("#define A A\n#define A A"); 2563 verifyFormat("#define A(X) A\n#define A A"); 2564 2565 verifyFormat("#define Something Other", getLLVMStyleWithColumns(23)); 2566 verifyFormat("#define Something \\\n Other", getLLVMStyleWithColumns(22)); 2567 } 2568 2569 TEST_F(FormatTest, HandlePreprocessorDirectiveContext) { 2570 EXPECT_EQ("// somecomment\n" 2571 "#include \"a.h\"\n" 2572 "#define A( \\\n" 2573 " A, B)\n" 2574 "#include \"b.h\"\n" 2575 "// somecomment\n", 2576 format(" // somecomment\n" 2577 " #include \"a.h\"\n" 2578 "#define A(A,\\\n" 2579 " B)\n" 2580 " #include \"b.h\"\n" 2581 " // somecomment\n", 2582 getLLVMStyleWithColumns(13))); 2583 } 2584 2585 TEST_F(FormatTest, LayoutSingleHash) { EXPECT_EQ("#\na;", format("#\na;")); } 2586 2587 TEST_F(FormatTest, LayoutCodeInMacroDefinitions) { 2588 EXPECT_EQ("#define A \\\n" 2589 " c; \\\n" 2590 " e;\n" 2591 "f;", 2592 format("#define A c; e;\n" 2593 "f;", 2594 getLLVMStyleWithColumns(14))); 2595 } 2596 2597 TEST_F(FormatTest, LayoutRemainingTokens) { EXPECT_EQ("{}", format("{}")); } 2598 2599 TEST_F(FormatTest, AlwaysFormatsEntireMacroDefinitions) { 2600 EXPECT_EQ("int i;\n" 2601 "#define A \\\n" 2602 " int i; \\\n" 2603 " int j\n" 2604 "int k;", 2605 format("int i;\n" 2606 "#define A \\\n" 2607 " int i ; \\\n" 2608 " int j\n" 2609 "int k;", 2610 8, 0, getGoogleStyle())); // 8: position of "#define". 2611 EXPECT_EQ("int i;\n" 2612 "#define A \\\n" 2613 " int i; \\\n" 2614 " int j\n" 2615 "int k;", 2616 format("int i;\n" 2617 "#define A \\\n" 2618 " int i ; \\\n" 2619 " int j\n" 2620 "int k;", 2621 45, 0, getGoogleStyle())); // 45: position of "j". 2622 } 2623 2624 TEST_F(FormatTest, MacroDefinitionInsideStatement) { 2625 EXPECT_EQ("int x,\n" 2626 "#define A\n" 2627 " y;", 2628 format("int x,\n#define A\ny;")); 2629 } 2630 2631 TEST_F(FormatTest, HashInMacroDefinition) { 2632 EXPECT_EQ("#define A(c) L#c", format("#define A(c) L#c", getLLVMStyle())); 2633 verifyFormat("#define A \\\n b #c;", getLLVMStyleWithColumns(11)); 2634 verifyFormat("#define A \\\n" 2635 " { \\\n" 2636 " f(#c); \\\n" 2637 " }", 2638 getLLVMStyleWithColumns(11)); 2639 2640 verifyFormat("#define A(X) \\\n" 2641 " void function##X()", 2642 getLLVMStyleWithColumns(22)); 2643 2644 verifyFormat("#define A(a, b, c) \\\n" 2645 " void a##b##c()", 2646 getLLVMStyleWithColumns(22)); 2647 2648 verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22)); 2649 } 2650 2651 TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) { 2652 EXPECT_EQ("#define A (x)", format("#define A (x)")); 2653 EXPECT_EQ("#define A(x)", format("#define A(x)")); 2654 } 2655 2656 TEST_F(FormatTest, EmptyLinesInMacroDefinitions) { 2657 EXPECT_EQ("#define A b;", format("#define A \\\n" 2658 " \\\n" 2659 " b;", 2660 getLLVMStyleWithColumns(25))); 2661 EXPECT_EQ("#define A \\\n" 2662 " \\\n" 2663 " a; \\\n" 2664 " b;", 2665 format("#define A \\\n" 2666 " \\\n" 2667 " a; \\\n" 2668 " b;", 2669 getLLVMStyleWithColumns(11))); 2670 EXPECT_EQ("#define A \\\n" 2671 " a; \\\n" 2672 " \\\n" 2673 " b;", 2674 format("#define A \\\n" 2675 " a; \\\n" 2676 " \\\n" 2677 " b;", 2678 getLLVMStyleWithColumns(11))); 2679 } 2680 2681 TEST_F(FormatTest, MacroDefinitionsWithIncompleteCode) { 2682 verifyFormat("#define A :"); 2683 verifyFormat("#define SOMECASES \\\n" 2684 " case 1: \\\n" 2685 " case 2\n", 2686 getLLVMStyleWithColumns(20)); 2687 verifyFormat("#define A template <typename T>"); 2688 verifyFormat("#define STR(x) #x\n" 2689 "f(STR(this_is_a_string_literal{));"); 2690 verifyFormat("#pragma omp threadprivate( \\\n" 2691 " y)), // expected-warning", 2692 getLLVMStyleWithColumns(28)); 2693 verifyFormat("#d, = };"); 2694 verifyFormat("#if \"a"); 2695 verifyFormat("({\n" 2696 "#define b }\\\n" 2697 " a\n" 2698 "a"); 2699 verifyFormat("#define A \\\n" 2700 " { \\\n" 2701 " {\n" 2702 "#define B \\\n" 2703 " } \\\n" 2704 " }", 2705 getLLVMStyleWithColumns(15)); 2706 2707 verifyNoCrash("#if a\na(\n#else\n#endif\n{a"); 2708 verifyNoCrash("a={0,1\n#if a\n#else\n;\n#endif\n}"); 2709 verifyNoCrash("#if a\na(\n#else\n#endif\n) a {a,b,c,d,f,g};"); 2710 verifyNoCrash("#ifdef A\n a(\n #else\n #endif\n) = []() { \n)}"); 2711 } 2712 2713 TEST_F(FormatTest, MacrosWithoutTrailingSemicolon) { 2714 verifyFormat("SOME_TYPE_NAME abc;"); // Gated on the newline. 2715 EXPECT_EQ("class A : public QObject {\n" 2716 " Q_OBJECT\n" 2717 "\n" 2718 " A() {}\n" 2719 "};", 2720 format("class A : public QObject {\n" 2721 " Q_OBJECT\n" 2722 "\n" 2723 " A() {\n}\n" 2724 "} ;")); 2725 EXPECT_EQ("SOME_MACRO\n" 2726 "namespace {\n" 2727 "void f();\n" 2728 "}", 2729 format("SOME_MACRO\n" 2730 " namespace {\n" 2731 "void f( );\n" 2732 "}")); 2733 // Only if the identifier contains at least 5 characters. 2734 EXPECT_EQ("HTTP f();", 2735 format("HTTP\nf();")); 2736 EXPECT_EQ("MACRO\nf();", 2737 format("MACRO\nf();")); 2738 // Only if everything is upper case. 2739 EXPECT_EQ("class A : public QObject {\n" 2740 " Q_Object A() {}\n" 2741 "};", 2742 format("class A : public QObject {\n" 2743 " Q_Object\n" 2744 " A() {\n}\n" 2745 "} ;")); 2746 2747 // Only if the next line can actually start an unwrapped line. 2748 EXPECT_EQ("SOME_WEIRD_LOG_MACRO << SomeThing;", 2749 format("SOME_WEIRD_LOG_MACRO\n" 2750 "<< SomeThing;")); 2751 2752 verifyFormat("VISIT_GL_CALL(GenBuffers, void, (GLsizei n, GLuint* buffers), " 2753 "(n, buffers))\n", getChromiumStyle(FormatStyle::LK_Cpp)); 2754 } 2755 2756 TEST_F(FormatTest, MacroCallsWithoutTrailingSemicolon) { 2757 EXPECT_EQ("INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2758 "INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2759 "INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2760 "class X {};\n" 2761 "INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2762 "int *createScopDetectionPass() { return 0; }", 2763 format(" INITIALIZE_PASS_BEGIN(ScopDetection, \"polly-detect\")\n" 2764 " INITIALIZE_AG_DEPENDENCY(AliasAnalysis)\n" 2765 " INITIALIZE_PASS_DEPENDENCY(DominatorTree)\n" 2766 " class X {};\n" 2767 " INITIALIZE_PASS_END(ScopDetection, \"polly-detect\")\n" 2768 " int *createScopDetectionPass() { return 0; }")); 2769 // FIXME: We could probably treat IPC_BEGIN_MESSAGE_MAP/IPC_END_MESSAGE_MAP as 2770 // braces, so that inner block is indented one level more. 2771 EXPECT_EQ("int q() {\n" 2772 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2773 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2774 " IPC_END_MESSAGE_MAP()\n" 2775 "}", 2776 format("int q() {\n" 2777 " IPC_BEGIN_MESSAGE_MAP(WebKitTestController, message)\n" 2778 " IPC_MESSAGE_HANDLER(xxx, qqq)\n" 2779 " IPC_END_MESSAGE_MAP()\n" 2780 "}")); 2781 2782 // Same inside macros. 2783 EXPECT_EQ("#define LIST(L) \\\n" 2784 " L(A) \\\n" 2785 " L(B) \\\n" 2786 " L(C)", 2787 format("#define LIST(L) \\\n" 2788 " L(A) \\\n" 2789 " L(B) \\\n" 2790 " L(C)", 2791 getGoogleStyle())); 2792 2793 // These must not be recognized as macros. 2794 EXPECT_EQ("int q() {\n" 2795 " f(x);\n" 2796 " f(x) {}\n" 2797 " f(x)->g();\n" 2798 " f(x)->*g();\n" 2799 " f(x).g();\n" 2800 " f(x) = x;\n" 2801 " f(x) += x;\n" 2802 " f(x) -= x;\n" 2803 " f(x) *= x;\n" 2804 " f(x) /= x;\n" 2805 " f(x) %= x;\n" 2806 " f(x) &= x;\n" 2807 " f(x) |= x;\n" 2808 " f(x) ^= x;\n" 2809 " f(x) >>= x;\n" 2810 " f(x) <<= x;\n" 2811 " f(x)[y].z();\n" 2812 " LOG(INFO) << x;\n" 2813 " ifstream(x) >> x;\n" 2814 "}\n", 2815 format("int q() {\n" 2816 " f(x)\n;\n" 2817 " f(x)\n {}\n" 2818 " f(x)\n->g();\n" 2819 " f(x)\n->*g();\n" 2820 " f(x)\n.g();\n" 2821 " f(x)\n = x;\n" 2822 " f(x)\n += x;\n" 2823 " f(x)\n -= x;\n" 2824 " f(x)\n *= x;\n" 2825 " f(x)\n /= x;\n" 2826 " f(x)\n %= x;\n" 2827 " f(x)\n &= x;\n" 2828 " f(x)\n |= x;\n" 2829 " f(x)\n ^= x;\n" 2830 " f(x)\n >>= x;\n" 2831 " f(x)\n <<= x;\n" 2832 " f(x)\n[y].z();\n" 2833 " LOG(INFO)\n << x;\n" 2834 " ifstream(x)\n >> x;\n" 2835 "}\n")); 2836 EXPECT_EQ("int q() {\n" 2837 " F(x)\n" 2838 " if (1) {\n" 2839 " }\n" 2840 " F(x)\n" 2841 " while (1) {\n" 2842 " }\n" 2843 " F(x)\n" 2844 " G(x);\n" 2845 " F(x)\n" 2846 " try {\n" 2847 " Q();\n" 2848 " } catch (...) {\n" 2849 " }\n" 2850 "}\n", 2851 format("int q() {\n" 2852 "F(x)\n" 2853 "if (1) {}\n" 2854 "F(x)\n" 2855 "while (1) {}\n" 2856 "F(x)\n" 2857 "G(x);\n" 2858 "F(x)\n" 2859 "try { Q(); } catch (...) {}\n" 2860 "}\n")); 2861 EXPECT_EQ("class A {\n" 2862 " A() : t(0) {}\n" 2863 " A(int i) noexcept() : {}\n" 2864 " A(X x)\n" // FIXME: function-level try blocks are broken. 2865 " try : t(0) {\n" 2866 " } catch (...) {\n" 2867 " }\n" 2868 "};", 2869 format("class A {\n" 2870 " A()\n : t(0) {}\n" 2871 " A(int i)\n noexcept() : {}\n" 2872 " A(X x)\n" 2873 " try : t(0) {} catch (...) {}\n" 2874 "};")); 2875 EXPECT_EQ( 2876 "class SomeClass {\n" 2877 "public:\n" 2878 " SomeClass() EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2879 "};", 2880 format("class SomeClass {\n" 2881 "public:\n" 2882 " SomeClass()\n" 2883 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2884 "};")); 2885 EXPECT_EQ( 2886 "class SomeClass {\n" 2887 "public:\n" 2888 " SomeClass()\n" 2889 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2890 "};", 2891 format("class SomeClass {\n" 2892 "public:\n" 2893 " SomeClass()\n" 2894 " EXCLUSIVE_LOCK_FUNCTION(mu_);\n" 2895 "};", getLLVMStyleWithColumns(40))); 2896 } 2897 2898 TEST_F(FormatTest, LayoutMacroDefinitionsStatementsSpanningBlocks) { 2899 verifyFormat("#define A \\\n" 2900 " f({ \\\n" 2901 " g(); \\\n" 2902 " });", getLLVMStyleWithColumns(11)); 2903 } 2904 2905 TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) { 2906 EXPECT_EQ("{\n {\n#define A\n }\n}", format("{{\n#define A\n}}")); 2907 } 2908 2909 TEST_F(FormatTest, FormatHashIfNotAtStartOfLine) { 2910 verifyFormat("{\n { a #c; }\n}"); 2911 } 2912 2913 TEST_F(FormatTest, FormatUnbalancedStructuralElements) { 2914 EXPECT_EQ("#define A \\\n { \\\n {\nint i;", 2915 format("#define A { {\nint i;", getLLVMStyleWithColumns(11))); 2916 EXPECT_EQ("#define A \\\n } \\\n }\nint i;", 2917 format("#define A } }\nint i;", getLLVMStyleWithColumns(11))); 2918 } 2919 2920 TEST_F(FormatTest, EscapedNewlineAtStartOfToken) { 2921 EXPECT_EQ( 2922 "#define A \\\n int i; \\\n int j;", 2923 format("#define A \\\nint i;\\\n int j;", getLLVMStyleWithColumns(11))); 2924 EXPECT_EQ("template <class T> f();", format("\\\ntemplate <class T> f();")); 2925 } 2926 2927 TEST_F(FormatTest, NoEscapedNewlineHandlingInBlockComments) { 2928 EXPECT_EQ("/* \\ \\ \\\n*/", format("\\\n/* \\ \\ \\\n*/")); 2929 } 2930 2931 TEST_F(FormatTest, DontCrashOnBlockComments) { 2932 EXPECT_EQ( 2933 "int xxxxxxxxx; /* " 2934 "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy\n" 2935 "zzzzzz\n" 2936 "0*/", 2937 format("int xxxxxxxxx; /* " 2938 "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy zzzzzz\n" 2939 "0*/")); 2940 } 2941 2942 TEST_F(FormatTest, CalculateSpaceOnConsecutiveLinesInMacro) { 2943 verifyFormat("#define A \\\n" 2944 " int v( \\\n" 2945 " a); \\\n" 2946 " int i;", 2947 getLLVMStyleWithColumns(11)); 2948 } 2949 2950 TEST_F(FormatTest, MixingPreprocessorDirectivesAndNormalCode) { 2951 EXPECT_EQ( 2952 "#define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2953 " \\\n" 2954 " aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 2955 "\n" 2956 "AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 2957 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n", 2958 format(" #define ALooooooooooooooooooooooooooooooooooooooongMacro(" 2959 "\\\n" 2960 "aLoooooooooooooooooooooooongFuuuuuuuuuuuuuunctiooooooooo)\n" 2961 " \n" 2962 " AlooooooooooooooooooooooooooooooooooooooongCaaaaaaaaaal(\n" 2963 " aLooooooooooooooooooooooonPaaaaaaaaaaaaaaaaaaaaarmmmm);\n")); 2964 } 2965 2966 TEST_F(FormatTest, LayoutStatementsAroundPreprocessorDirectives) { 2967 EXPECT_EQ("int\n" 2968 "#define A\n" 2969 " a;", 2970 format("int\n#define A\na;")); 2971 verifyFormat("functionCallTo(\n" 2972 " someOtherFunction(\n" 2973 " withSomeParameters, whichInSequence,\n" 2974 " areLongerThanALine(andAnotherCall,\n" 2975 "#define A B\n" 2976 " withMoreParamters,\n" 2977 " whichStronglyInfluenceTheLayout),\n" 2978 " andMoreParameters),\n" 2979 " trailing);", 2980 getLLVMStyleWithColumns(69)); 2981 verifyFormat("Foo::Foo()\n" 2982 "#ifdef BAR\n" 2983 " : baz(0)\n" 2984 "#endif\n" 2985 "{\n" 2986 "}"); 2987 verifyFormat("void f() {\n" 2988 " if (true)\n" 2989 "#ifdef A\n" 2990 " f(42);\n" 2991 " x();\n" 2992 "#else\n" 2993 " g();\n" 2994 " x();\n" 2995 "#endif\n" 2996 "}"); 2997 verifyFormat("void f(param1, param2,\n" 2998 " param3,\n" 2999 "#ifdef A\n" 3000 " param4(param5,\n" 3001 "#ifdef A1\n" 3002 " param6,\n" 3003 "#ifdef A2\n" 3004 " param7),\n" 3005 "#else\n" 3006 " param8),\n" 3007 " param9,\n" 3008 "#endif\n" 3009 " param10,\n" 3010 "#endif\n" 3011 " param11)\n" 3012 "#else\n" 3013 " param12)\n" 3014 "#endif\n" 3015 "{\n" 3016 " x();\n" 3017 "}", 3018 getLLVMStyleWithColumns(28)); 3019 verifyFormat("#if 1\n" 3020 "int i;"); 3021 verifyFormat( 3022 "#if 1\n" 3023 "#endif\n" 3024 "#if 1\n" 3025 "#else\n" 3026 "#endif\n"); 3027 verifyFormat("DEBUG({\n" 3028 " return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3029 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;\n" 3030 "});\n" 3031 "#if a\n" 3032 "#else\n" 3033 "#endif"); 3034 3035 verifyFormat("void f(\n" 3036 "#if A\n" 3037 " );\n" 3038 "#else\n" 3039 "#endif"); 3040 } 3041 3042 TEST_F(FormatTest, GraciouslyHandleIncorrectPreprocessorConditions) { 3043 verifyFormat("#endif\n" 3044 "#if B"); 3045 } 3046 3047 TEST_F(FormatTest, FormatsJoinedLinesOnSubsequentRuns) { 3048 FormatStyle SingleLine = getLLVMStyle(); 3049 SingleLine.AllowShortIfStatementsOnASingleLine = true; 3050 verifyFormat( 3051 "#if 0\n" 3052 "#elif 1\n" 3053 "#endif\n" 3054 "void foo() {\n" 3055 " if (test) foo2();\n" 3056 "}", 3057 SingleLine); 3058 } 3059 3060 TEST_F(FormatTest, LayoutBlockInsideParens) { 3061 verifyFormat("functionCall({ int i; });"); 3062 verifyFormat("functionCall({\n" 3063 " int i;\n" 3064 " int j;\n" 3065 "});"); 3066 verifyFormat("functionCall({\n" 3067 " int i;\n" 3068 " int j;\n" 3069 "}, aaaa, bbbb, cccc);"); 3070 verifyFormat("functionA(functionB({\n" 3071 " int i;\n" 3072 " int j;\n" 3073 " }),\n" 3074 " aaaa, bbbb, cccc);"); 3075 verifyFormat("functionCall(\n" 3076 " {\n" 3077 " int i;\n" 3078 " int j;\n" 3079 " },\n" 3080 " aaaa, bbbb, // comment\n" 3081 " cccc);"); 3082 verifyFormat("functionA(functionB({\n" 3083 " int i;\n" 3084 " int j;\n" 3085 " }),\n" 3086 " aaaa, bbbb, // comment\n" 3087 " cccc);"); 3088 verifyFormat("functionCall(aaaa, bbbb, { int i; });"); 3089 verifyFormat("functionCall(aaaa, bbbb, {\n" 3090 " int i;\n" 3091 " int j;\n" 3092 "});"); 3093 verifyFormat( 3094 "Aaa(\n" // FIXME: There shouldn't be a linebreak here. 3095 " {\n" 3096 " int i; // break\n" 3097 " },\n" 3098 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 3099 " ccccccccccccccccc));"); 3100 verifyFormat("DEBUG({\n" 3101 " if (a)\n" 3102 " f();\n" 3103 "});"); 3104 } 3105 3106 TEST_F(FormatTest, LayoutBlockInsideStatement) { 3107 EXPECT_EQ("SOME_MACRO { int i; }\n" 3108 "int i;", 3109 format(" SOME_MACRO {int i;} int i;")); 3110 } 3111 3112 TEST_F(FormatTest, LayoutNestedBlocks) { 3113 verifyFormat("void AddOsStrings(unsigned bitmask) {\n" 3114 " struct s {\n" 3115 " int i;\n" 3116 " };\n" 3117 " s kBitsToOs[] = {{10}};\n" 3118 " for (int i = 0; i < 10; ++i)\n" 3119 " return;\n" 3120 "}"); 3121 verifyFormat("call(parameter, {\n" 3122 " something();\n" 3123 " // Comment using all columns.\n" 3124 " somethingelse();\n" 3125 "});", 3126 getLLVMStyleWithColumns(40)); 3127 verifyFormat("DEBUG( //\n" 3128 " { f(); }, a);"); 3129 verifyFormat("DEBUG( //\n" 3130 " {\n" 3131 " f(); //\n" 3132 " },\n" 3133 " a);"); 3134 3135 EXPECT_EQ("call(parameter, {\n" 3136 " something();\n" 3137 " // Comment too\n" 3138 " // looooooooooong.\n" 3139 " somethingElse();\n" 3140 "});", 3141 format("call(parameter, {\n" 3142 " something();\n" 3143 " // Comment too looooooooooong.\n" 3144 " somethingElse();\n" 3145 "});", 3146 getLLVMStyleWithColumns(29))); 3147 EXPECT_EQ("DEBUG({ int i; });", format("DEBUG({ int i; });")); 3148 EXPECT_EQ("DEBUG({ // comment\n" 3149 " int i;\n" 3150 "});", 3151 format("DEBUG({ // comment\n" 3152 "int i;\n" 3153 "});")); 3154 EXPECT_EQ("DEBUG({\n" 3155 " int i;\n" 3156 "\n" 3157 " // comment\n" 3158 " int j;\n" 3159 "});", 3160 format("DEBUG({\n" 3161 " int i;\n" 3162 "\n" 3163 " // comment\n" 3164 " int j;\n" 3165 "});")); 3166 3167 verifyFormat("DEBUG({\n" 3168 " if (a)\n" 3169 " return;\n" 3170 "});"); 3171 verifyGoogleFormat("DEBUG({\n" 3172 " if (a) return;\n" 3173 "});"); 3174 FormatStyle Style = getGoogleStyle(); 3175 Style.ColumnLimit = 45; 3176 verifyFormat("Debug(aaaaa, {\n" 3177 " if (aaaaaaaaaaaaaaaaaaaaaaaa) return;\n" 3178 "}, a);", 3179 Style); 3180 3181 verifyNoCrash("^{v^{a}}"); 3182 } 3183 3184 TEST_F(FormatTest, IndividualStatementsOfNestedBlocks) { 3185 EXPECT_EQ("DEBUG({\n" 3186 " int i;\n" 3187 " int j;\n" 3188 "});", 3189 format("DEBUG( {\n" 3190 " int i;\n" 3191 " int j;\n" 3192 "} ) ;", 3193 20, 1, getLLVMStyle())); 3194 EXPECT_EQ("DEBUG( {\n" 3195 " int i;\n" 3196 " int j;\n" 3197 "} ) ;", 3198 format("DEBUG( {\n" 3199 " int i;\n" 3200 " int j;\n" 3201 "} ) ;", 3202 41, 1, getLLVMStyle())); 3203 EXPECT_EQ("DEBUG( {\n" 3204 " int i;\n" 3205 " int j;\n" 3206 "} ) ;", 3207 format("DEBUG( {\n" 3208 " int i;\n" 3209 " int j;\n" 3210 "} ) ;", 3211 41, 1, getLLVMStyle())); 3212 EXPECT_EQ("DEBUG({\n" 3213 " int i;\n" 3214 " int j;\n" 3215 "});", 3216 format("DEBUG( {\n" 3217 " int i;\n" 3218 " int j;\n" 3219 "} ) ;", 3220 20, 1, getLLVMStyle())); 3221 3222 EXPECT_EQ("Debug({\n" 3223 " if (aaaaaaaaaaaaaaaaaaaaaaaa)\n" 3224 " return;\n" 3225 " },\n" 3226 " a);", 3227 format("Debug({\n" 3228 " if (aaaaaaaaaaaaaaaaaaaaaaaa)\n" 3229 " return;\n" 3230 " },\n" 3231 " a);", 3232 50, 1, getLLVMStyle())); 3233 EXPECT_EQ("DEBUG({\n" 3234 " DEBUG({\n" 3235 " int a;\n" 3236 " int b;\n" 3237 " }) ;\n" 3238 "});", 3239 format("DEBUG({\n" 3240 " DEBUG({\n" 3241 " int a;\n" 3242 " int b;\n" // Format this line only. 3243 " }) ;\n" // Don't touch this line. 3244 "});", 3245 35, 0, getLLVMStyle())); 3246 EXPECT_EQ("DEBUG({\n" 3247 " int a; //\n" 3248 "});", 3249 format("DEBUG({\n" 3250 " int a; //\n" 3251 "});", 3252 0, 0, getLLVMStyle())); 3253 } 3254 3255 TEST_F(FormatTest, PutEmptyBlocksIntoOneLine) { 3256 EXPECT_EQ("{}", format("{}")); 3257 verifyFormat("enum E {};"); 3258 verifyFormat("enum E {}"); 3259 } 3260 3261 //===----------------------------------------------------------------------===// 3262 // Line break tests. 3263 //===----------------------------------------------------------------------===// 3264 3265 TEST_F(FormatTest, PreventConfusingIndents) { 3266 verifyFormat( 3267 "void f() {\n" 3268 " SomeLongMethodName(SomeReallyLongMethod(CallOtherReallyLongMethod(\n" 3269 " parameter, parameter, parameter)),\n" 3270 " SecondLongCall(parameter));\n" 3271 "}"); 3272 verifyFormat( 3273 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3274 " aaaaaaaaaaaaaaaaaaaaaaaa(\n" 3275 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3276 " aaaaaaaaaaaaaaaaaaaaaaaa);"); 3277 verifyFormat( 3278 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3279 " [aaaaaaaaaaaaaaaaaaaaaaaa\n" 3280 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 3281 " [aaaaaaaaaaaaaaaaaaaaaaaa]];"); 3282 verifyFormat( 3283 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 3284 " aaaaaaaaaaaaaaaaaaaaaaaa<\n" 3285 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>,\n" 3286 " aaaaaaaaaaaaaaaaaaaaaaaa>;"); 3287 verifyFormat("int a = bbbb && ccc && fffff(\n" 3288 "#define A Just forcing a new line\n" 3289 " ddd);"); 3290 } 3291 3292 TEST_F(FormatTest, LineBreakingInBinaryExpressions) { 3293 verifyFormat( 3294 "bool aaaaaaa =\n" 3295 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() ||\n" 3296 " bbbbbbbb();"); 3297 verifyFormat( 3298 "bool aaaaaaa =\n" 3299 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaa).aaaaaaaaaaaaaaaaaaa() or\n" 3300 " bbbbbbbb();"); 3301 3302 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3303 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb &&\n" 3304 " ccccccccc == ddddddddddd;"); 3305 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaa =\n" 3306 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa != bbbbbbbbbbbbbbbbbb and\n" 3307 " ccccccccc == ddddddddddd;"); 3308 verifyFormat( 3309 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 3310 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa not_eq bbbbbbbbbbbbbbbbbb and\n" 3311 " ccccccccc == ddddddddddd;"); 3312 3313 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3314 " aaaaaa) &&\n" 3315 " bbbbbb && cccccc;"); 3316 verifyFormat("aaaaaa = aaaaaaa(aaaaaaa, // break\n" 3317 " aaaaaa) >>\n" 3318 " bbbbbb;"); 3319 verifyFormat("Whitespaces.addUntouchableComment(\n" 3320 " SourceMgr.getSpellingColumnNumber(\n" 3321 " TheLine.Last->FormatTok.Tok.getLocation()) -\n" 3322 " 1);"); 3323 3324 verifyFormat("if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3325 " bbbbbbbbbbbbbbbbbb) && // aaaaaaaaaaaaaaaa\n" 3326 " cccccc) {\n}"); 3327 verifyFormat("b = a &&\n" 3328 " // Comment\n" 3329 " b.c && d;"); 3330 3331 // If the LHS of a comparison is not a binary expression itself, the 3332 // additional linebreak confuses many people. 3333 verifyFormat( 3334 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3335 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) > 5) {\n" 3336 "}"); 3337 verifyFormat( 3338 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3339 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3340 "}"); 3341 verifyFormat( 3342 "if (aaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaaaaaaaaaaa(\n" 3343 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3344 "}"); 3345 // Even explicit parentheses stress the precedence enough to make the 3346 // additional break unnecessary. 3347 verifyFormat( 3348 "if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3349 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) == 5) {\n" 3350 "}"); 3351 // This cases is borderline, but with the indentation it is still readable. 3352 verifyFormat( 3353 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3354 " aaaaaaaaaaaaaaa) > aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3355 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 3356 "}", 3357 getLLVMStyleWithColumns(75)); 3358 3359 // If the LHS is a binary expression, we should still use the additional break 3360 // as otherwise the formatting hides the operator precedence. 3361 verifyFormat( 3362 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3363 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3364 " 5) {\n" 3365 "}"); 3366 3367 FormatStyle OnePerLine = getLLVMStyle(); 3368 OnePerLine.BinPackParameters = false; 3369 verifyFormat( 3370 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3371 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3372 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}", 3373 OnePerLine); 3374 } 3375 3376 TEST_F(FormatTest, ExpressionIndentation) { 3377 verifyFormat("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 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3387 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3388 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3389 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3390 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3391 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3392 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3393 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3394 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ==\n" 3395 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *\n" 3396 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3397 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 3398 verifyFormat("if () {\n" 3399 "} else if (aaaaa &&\n" 3400 " bbbbb > // break\n" 3401 " ccccc) {\n" 3402 "}"); 3403 3404 // Presence of a trailing comment used to change indentation of b. 3405 verifyFormat("return aaaaaaaaaaaaaaaaaaa +\n" 3406 " b;\n" 3407 "return aaaaaaaaaaaaaaaaaaa +\n" 3408 " b; //", 3409 getLLVMStyleWithColumns(30)); 3410 } 3411 3412 TEST_F(FormatTest, ExpressionIndentationBreakingBeforeOperators) { 3413 // Not sure what the best system is here. Like this, the LHS can be found 3414 // immediately above an operator (everything with the same or a higher 3415 // indent). The RHS is aligned right of the operator and so compasses 3416 // everything until something with the same indent as the operator is found. 3417 // FIXME: Is this a good system? 3418 FormatStyle Style = getLLVMStyle(); 3419 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 3420 verifyFormat( 3421 "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3422 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3423 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3424 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3425 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3426 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3427 " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3428 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3429 " > ccccccccccccccccccccccccccccccccccccccccc;", 3430 Style); 3431 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3432 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3433 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3434 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3435 Style); 3436 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3437 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3438 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3439 " == bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3440 Style); 3441 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3442 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3443 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3444 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}", 3445 Style); 3446 verifyFormat("if () {\n" 3447 "} else if (aaaaa\n" 3448 " && bbbbb // break\n" 3449 " > ccccc) {\n" 3450 "}", 3451 Style); 3452 verifyFormat("return (a)\n" 3453 " // comment\n" 3454 " + b;", 3455 Style); 3456 verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3457 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3458 " + cc;", 3459 Style); 3460 3461 // Forced by comments. 3462 verifyFormat( 3463 "unsigned ContentSize =\n" 3464 " sizeof(int16_t) // DWARF ARange version number\n" 3465 " + sizeof(int32_t) // Offset of CU in the .debug_info section\n" 3466 " + sizeof(int8_t) // Pointer Size (in bytes)\n" 3467 " + sizeof(int8_t); // Segment Size (in bytes)"); 3468 3469 verifyFormat("return boost::fusion::at_c<0>(iiii).second\n" 3470 " == boost::fusion::at_c<1>(iiii).second;", 3471 Style); 3472 3473 Style.ColumnLimit = 60; 3474 verifyFormat("zzzzzzzzzz\n" 3475 " = bbbbbbbbbbbbbbbbb\n" 3476 " >> aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa);", 3477 Style); 3478 } 3479 3480 TEST_F(FormatTest, NoOperandAlignment) { 3481 FormatStyle Style = getLLVMStyle(); 3482 Style.AlignOperands = false; 3483 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; 3484 verifyFormat( 3485 "bool value = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3486 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3487 " + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3488 " == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3489 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3490 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3491 " && aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3492 " * aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3493 " > ccccccccccccccccccccccccccccccccccccccccc;", 3494 Style); 3495 3496 verifyFormat("int aaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3497 " * bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3498 " + cc;", 3499 Style); 3500 verifyFormat("int a = aa\n" 3501 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 3502 " * cccccccccccccccccccccccccccccccccccc;", 3503 Style); 3504 3505 Style.AlignAfterOpenBracket = false; 3506 verifyFormat("return (a > b\n" 3507 " // comment1\n" 3508 " // comment2\n" 3509 " || c);", 3510 Style); 3511 } 3512 3513 TEST_F(FormatTest, BreakingBeforeNonAssigmentOperators) { 3514 FormatStyle Style = getLLVMStyle(); 3515 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_NonAssignment; 3516 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 3517 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3518 " + bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;", 3519 Style); 3520 } 3521 3522 TEST_F(FormatTest, ConstructorInitializers) { 3523 verifyFormat("Constructor() : Initializer(FitsOnTheLine) {}"); 3524 verifyFormat("Constructor() : Inttializer(FitsOnTheLine) {}", 3525 getLLVMStyleWithColumns(45)); 3526 verifyFormat("Constructor()\n" 3527 " : Inttializer(FitsOnTheLine) {}", 3528 getLLVMStyleWithColumns(44)); 3529 verifyFormat("Constructor()\n" 3530 " : Inttializer(FitsOnTheLine) {}", 3531 getLLVMStyleWithColumns(43)); 3532 3533 verifyFormat( 3534 "SomeClass::Constructor()\n" 3535 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3536 3537 verifyFormat( 3538 "SomeClass::Constructor()\n" 3539 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3540 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}"); 3541 verifyFormat( 3542 "SomeClass::Constructor()\n" 3543 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3544 " aaaaaaaaaaaaaaa(aaaaaaaaaaaa) {}"); 3545 3546 verifyFormat("Constructor()\n" 3547 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3548 " aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3549 " aaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 3550 " aaaaaaaaaaaaaaaaaaaaaaa() {}"); 3551 3552 verifyFormat("Constructor()\n" 3553 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3554 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3555 3556 verifyFormat("Constructor(int Parameter = 0)\n" 3557 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa),\n" 3558 " aaaaaaaaaaaa(aaaaaaaaaaaaaaaaa) {}"); 3559 verifyFormat("Constructor()\n" 3560 " : aaaaaaaaaaaaaaaaaaaa(a), bbbbbbbbbbbbbbbbbbbbbbbb(b) {\n" 3561 "}", 3562 getLLVMStyleWithColumns(60)); 3563 verifyFormat("Constructor()\n" 3564 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3565 " aaaaaaaaaaaaaaaaaaaaaaaaa(aaaa, aaaa)) {}"); 3566 3567 // Here a line could be saved by splitting the second initializer onto two 3568 // lines, but that is not desirable. 3569 verifyFormat("Constructor()\n" 3570 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaa),\n" 3571 " aaaaaaaaaaa(aaaaaaaaaaa),\n" 3572 " aaaaaaaaaaaaaaaaaaaaat(aaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3573 3574 FormatStyle OnePerLine = getLLVMStyle(); 3575 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3576 verifyFormat("SomeClass::Constructor()\n" 3577 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3578 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3579 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3580 OnePerLine); 3581 verifyFormat("SomeClass::Constructor()\n" 3582 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), // Some comment\n" 3583 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 3584 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 3585 OnePerLine); 3586 verifyFormat("MyClass::MyClass(int var)\n" 3587 " : some_var_(var), // 4 space indent\n" 3588 " some_other_var_(var + 1) { // lined up\n" 3589 "}", 3590 OnePerLine); 3591 verifyFormat("Constructor()\n" 3592 " : aaaaa(aaaaaa),\n" 3593 " aaaaa(aaaaaa),\n" 3594 " aaaaa(aaaaaa),\n" 3595 " aaaaa(aaaaaa),\n" 3596 " aaaaa(aaaaaa) {}", 3597 OnePerLine); 3598 verifyFormat("Constructor()\n" 3599 " : aaaaa(aaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaa,\n" 3600 " aaaaaaaaaaaaaaaaaaaaaa) {}", 3601 OnePerLine); 3602 3603 EXPECT_EQ("Constructor()\n" 3604 " : // Comment forcing unwanted break.\n" 3605 " aaaa(aaaa) {}", 3606 format("Constructor() :\n" 3607 " // Comment forcing unwanted break.\n" 3608 " aaaa(aaaa) {}")); 3609 } 3610 3611 TEST_F(FormatTest, MemoizationTests) { 3612 // This breaks if the memoization lookup does not take \c Indent and 3613 // \c LastSpace into account. 3614 verifyFormat( 3615 "extern CFRunLoopTimerRef\n" 3616 "CFRunLoopTimerCreate(CFAllocatorRef allocato, CFAbsoluteTime fireDate,\n" 3617 " CFTimeInterval interval, CFOptionFlags flags,\n" 3618 " CFIndex order, CFRunLoopTimerCallBack callout,\n" 3619 " CFRunLoopTimerContext *context) {}"); 3620 3621 // Deep nesting somewhat works around our memoization. 3622 verifyFormat( 3623 "aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3624 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3625 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3626 " aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(\n" 3627 " aaaaa())))))))))))))))))))))))))))))))))))))));", 3628 getLLVMStyleWithColumns(65)); 3629 verifyFormat( 3630 "aaaaa(\n" 3631 " aaaaa,\n" 3632 " aaaaa(\n" 3633 " aaaaa,\n" 3634 " aaaaa(\n" 3635 " aaaaa,\n" 3636 " aaaaa(\n" 3637 " aaaaa,\n" 3638 " aaaaa(\n" 3639 " aaaaa,\n" 3640 " aaaaa(\n" 3641 " aaaaa,\n" 3642 " aaaaa(\n" 3643 " aaaaa,\n" 3644 " aaaaa(\n" 3645 " aaaaa,\n" 3646 " aaaaa(\n" 3647 " aaaaa,\n" 3648 " aaaaa(\n" 3649 " aaaaa,\n" 3650 " aaaaa(\n" 3651 " aaaaa,\n" 3652 " aaaaa(\n" 3653 " aaaaa,\n" 3654 " aaaaa))))))))))));", 3655 getLLVMStyleWithColumns(65)); 3656 verifyFormat( 3657 "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" 3658 " a),\n" 3659 " a),\n" 3660 " a),\n" 3661 " a),\n" 3662 " a),\n" 3663 " a),\n" 3664 " a),\n" 3665 " a),\n" 3666 " a),\n" 3667 " a),\n" 3668 " a),\n" 3669 " a),\n" 3670 " a),\n" 3671 " a),\n" 3672 " a),\n" 3673 " a),\n" 3674 " a)", 3675 getLLVMStyleWithColumns(65)); 3676 3677 // This test takes VERY long when memoization is broken. 3678 FormatStyle OnePerLine = getLLVMStyle(); 3679 OnePerLine.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 3680 OnePerLine.BinPackParameters = false; 3681 std::string input = "Constructor()\n" 3682 " : aaaa(a,\n"; 3683 for (unsigned i = 0, e = 80; i != e; ++i) { 3684 input += " a,\n"; 3685 } 3686 input += " a) {}"; 3687 verifyFormat(input, OnePerLine); 3688 } 3689 3690 TEST_F(FormatTest, BreaksAsHighAsPossible) { 3691 verifyFormat( 3692 "void f() {\n" 3693 " if ((aaaaaaaaaaaaaaaaaaaaaaaaaaaaa && aaaaaaaaaaaaaaaaaaaaaaaaaa) ||\n" 3694 " (bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb && bbbbbbbbbbbbbbbbbbbbbbbbbb))\n" 3695 " f();\n" 3696 "}"); 3697 verifyFormat("if (Intervals[i].getRange().getFirst() <\n" 3698 " Intervals[i - 1].getRange().getLast()) {\n}"); 3699 } 3700 3701 TEST_F(FormatTest, BreaksFunctionDeclarations) { 3702 // Principially, we break function declarations in a certain order: 3703 // 1) break amongst arguments. 3704 verifyFormat("Aaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccc,\n" 3705 " Cccccccccccccc cccccccccccccc);"); 3706 verifyFormat( 3707 "template <class TemplateIt>\n" 3708 "SomeReturnType SomeFunction(TemplateIt begin, TemplateIt end,\n" 3709 " TemplateIt *stop) {}"); 3710 3711 // 2) break after return type. 3712 verifyFormat( 3713 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3714 "bbbbbbbbbbbbbb(Cccccccccccccc cccccccccccccccccccccccccc);", 3715 getGoogleStyle()); 3716 3717 // 3) break after (. 3718 verifyFormat( 3719 "Aaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbb(\n" 3720 " Cccccccccccccccccccccccccccccc cccccccccccccccccccccccccccccccc);", 3721 getGoogleStyle()); 3722 3723 // 4) break before after nested name specifiers. 3724 verifyFormat( 3725 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3726 "SomeClasssssssssssssssssssssssssssssssssssssss::\n" 3727 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc);", 3728 getGoogleStyle()); 3729 3730 // However, there are exceptions, if a sufficient amount of lines can be 3731 // saved. 3732 // FIXME: The precise cut-offs wrt. the number of saved lines might need some 3733 // more adjusting. 3734 verifyFormat("Aaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3735 " Cccccccccccccc cccccccccc,\n" 3736 " Cccccccccccccc cccccccccc,\n" 3737 " Cccccccccccccc cccccccccc,\n" 3738 " Cccccccccccccc cccccccccc);"); 3739 verifyFormat( 3740 "Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3741 "bbbbbbbbbbb(Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3742 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3743 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);", 3744 getGoogleStyle()); 3745 verifyFormat( 3746 "Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(Cccccccccccccc cccccccccc,\n" 3747 " Cccccccccccccc cccccccccc,\n" 3748 " Cccccccccccccc cccccccccc,\n" 3749 " Cccccccccccccc cccccccccc,\n" 3750 " Cccccccccccccc cccccccccc,\n" 3751 " Cccccccccccccc cccccccccc,\n" 3752 " Cccccccccccccc cccccccccc);"); 3753 verifyFormat("Aaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 3754 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3755 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3756 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc,\n" 3757 " Cccccccccccccc cccccccccc, Cccccccccccccc cccccccccc);"); 3758 3759 // Break after multi-line parameters. 3760 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3761 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3762 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3763 " bbbb bbbb);"); 3764 verifyFormat("void SomeLoooooooooooongFunction(\n" 3765 " std::unique_ptr<aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>\n" 3766 " aaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3767 " int bbbbbbbbbbbbb);"); 3768 3769 // Treat overloaded operators like other functions. 3770 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3771 "operator>(const SomeLoooooooooooooooooooooooooogType &other);"); 3772 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3773 "operator>>(const SomeLooooooooooooooooooooooooogType &other);"); 3774 verifyFormat("SomeLoooooooooooooooooooooooooogType\n" 3775 "operator<<(const SomeLooooooooooooooooooooooooogType &other);"); 3776 verifyGoogleFormat( 3777 "SomeLoooooooooooooooooooooooooooooogType operator>>(\n" 3778 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3779 verifyGoogleFormat( 3780 "SomeLoooooooooooooooooooooooooooooogType operator<<(\n" 3781 " const SomeLooooooooogType &a, const SomeLooooooooogType &b);"); 3782 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3783 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3784 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa\n" 3785 "aaaaaaaaaaaaaaaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaa = 1);"); 3786 verifyGoogleFormat( 3787 "typename aaaaaaaaaa<aaaaaa>::aaaaaaaaaaa\n" 3788 "aaaaaaaaaa<aaaaaa>::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3789 " bool *aaaaaaaaaaaaaaaaaa, bool *aa) {}"); 3790 3791 FormatStyle Style = getLLVMStyle(); 3792 Style.PointerAlignment = FormatStyle::PAS_Left; 3793 verifyFormat("void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3794 " aaaaaaaaaaaaaaaaaaaaaaaaa* const aaaaaaaaaaaa) {}", 3795 Style); 3796 verifyFormat( 3797 "void aaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa*\n" 3798 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 3799 Style); 3800 } 3801 3802 TEST_F(FormatTest, TrailingReturnType) { 3803 verifyFormat("auto foo() -> int;\n"); 3804 verifyFormat("struct S {\n" 3805 " auto bar() const -> int;\n" 3806 "};"); 3807 verifyFormat("template <size_t Order, typename T>\n" 3808 "auto load_img(const std::string &filename)\n" 3809 " -> alias::tensor<Order, T, mem::tag::cpu> {}"); 3810 verifyFormat("auto SomeFunction(A aaaaaaaaaaaaaaaaaaaaa) const\n" 3811 " -> decltype(f(aaaaaaaaaaaaaaaaaaaaa)) {}"); 3812 verifyFormat("auto doSomething(Aaaaaa *aaaaaa) -> decltype(aaaaaa->f()) {}"); 3813 3814 // Not trailing return types. 3815 verifyFormat("void f() { auto a = b->c(); }"); 3816 } 3817 3818 TEST_F(FormatTest, BreaksFunctionDeclarationsWithTrailingTokens) { 3819 // Avoid breaking before trailing 'const' or other trailing annotations, if 3820 // they are not function-like. 3821 FormatStyle Style = getGoogleStyle(); 3822 Style.ColumnLimit = 47; 3823 verifyFormat("void someLongFunction(\n" 3824 " int someLoooooooooooooongParameter) const {\n}", 3825 getLLVMStyleWithColumns(47)); 3826 verifyFormat("LoooooongReturnType\n" 3827 "someLoooooooongFunction() const {}", 3828 getLLVMStyleWithColumns(47)); 3829 verifyFormat("LoooooongReturnType someLoooooooongFunction()\n" 3830 " const {}", 3831 Style); 3832 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3833 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE;"); 3834 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3835 " aaaaa aaaaaaaaaaaaaaaaaaaa) OVERRIDE FINAL;"); 3836 verifyFormat("void SomeFunction(aaaaa aaaaaaaaaaaaaaaaaaaa,\n" 3837 " aaaaa aaaaaaaaaaaaaaaaaaaa) override final;"); 3838 verifyFormat("virtual void aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa,\n" 3839 " aaaaaaaaaaa aaaaa) const override;"); 3840 verifyGoogleFormat( 3841 "virtual void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 3842 " const override;"); 3843 3844 // Even if the first parameter has to be wrapped. 3845 verifyFormat("void someLongFunction(\n" 3846 " int someLongParameter) const {}", 3847 getLLVMStyleWithColumns(46)); 3848 verifyFormat("void someLongFunction(\n" 3849 " int someLongParameter) const {}", 3850 Style); 3851 verifyFormat("void someLongFunction(\n" 3852 " int someLongParameter) override {}", 3853 Style); 3854 verifyFormat("void someLongFunction(\n" 3855 " int someLongParameter) OVERRIDE {}", 3856 Style); 3857 verifyFormat("void someLongFunction(\n" 3858 " int someLongParameter) final {}", 3859 Style); 3860 verifyFormat("void someLongFunction(\n" 3861 " int someLongParameter) FINAL {}", 3862 Style); 3863 verifyFormat("void someLongFunction(\n" 3864 " int parameter) const override {}", 3865 Style); 3866 3867 Style.BreakBeforeBraces = FormatStyle::BS_Allman; 3868 verifyFormat("void someLongFunction(\n" 3869 " int someLongParameter) const\n" 3870 "{\n" 3871 "}", 3872 Style); 3873 3874 // Unless these are unknown annotations. 3875 verifyFormat("void SomeFunction(aaaaaaaaaa aaaaaaaaaaaaaaa,\n" 3876 " aaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3877 " LONG_AND_UGLY_ANNOTATION;"); 3878 3879 // Breaking before function-like trailing annotations is fine to keep them 3880 // close to their arguments. 3881 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 3882 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3883 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3884 " LOCKS_EXCLUDED(aaaaaaaaaaaaa);"); 3885 verifyFormat("void aaaaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) const\n" 3886 " LOCKS_EXCLUDED(aaaaaaaaaaaaa) {}"); 3887 verifyGoogleFormat("void aaaaaaaaaaaaaa(aaaaaaaa aaa) override\n" 3888 " AAAAAAAAAAAAAAAAAAAAAAAA(aaaaaaaaaaaaaaa);"); 3889 verifyFormat("SomeFunction([](int i) LOCKS_EXCLUDED(a) {});"); 3890 3891 verifyFormat( 3892 "void aaaaaaaaaaaaaaaaaa()\n" 3893 " __attribute__((aaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaa,\n" 3894 " aaaaaaaaaaaaaaaaaaaaaaaaa));"); 3895 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3896 " __attribute__((unused));"); 3897 verifyGoogleFormat( 3898 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3899 " GUARDED_BY(aaaaaaaaaaaa);"); 3900 verifyGoogleFormat( 3901 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 3902 " GUARDED_BY(aaaaaaaaaaaa);"); 3903 verifyGoogleFormat( 3904 "bool aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa GUARDED_BY(aaaaaaaaaaaa) =\n" 3905 " aaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 3906 } 3907 3908 TEST_F(FormatTest, BreaksDesireably) { 3909 verifyFormat("if (aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 3910 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa) ||\n" 3911 " aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa)) {\n}"); 3912 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3913 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)) {\n" 3914 "}"); 3915 3916 verifyFormat( 3917 "aaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3918 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}"); 3919 3920 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3921 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3922 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3923 3924 verifyFormat( 3925 "aaaaaaaa(aaaaaaaaaaaaa, aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3926 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 3927 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3928 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));"); 3929 3930 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 3931 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3932 3933 verifyFormat( 3934 "void f() {\n" 3935 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 3936 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 3937 "}"); 3938 verifyFormat( 3939 "aaaaaa(new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3940 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3941 verifyFormat( 3942 "aaaaaa(aaa, new Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 3943 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 3944 verifyFormat( 3945 "aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +\n" 3946 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 3947 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3948 3949 // Indent consistently independent of call expression. 3950 verifyFormat("aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbb.ccccccccccccccccc(\n" 3951 " dddddddddddddddddddddddddddddd));\n" 3952 "aaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(\n" 3953 " dddddddddddddddddddddddddddddd));"); 3954 3955 // This test case breaks on an incorrect memoization, i.e. an optimization not 3956 // taking into account the StopAt value. 3957 verifyFormat( 3958 "return aaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3959 " aaaaaaaaaaa(aaaaaaaaa) || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3960 " aaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaa ||\n" 3961 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 3962 3963 verifyFormat("{\n {\n {\n" 3964 " Annotation.SpaceRequiredBefore =\n" 3965 " Line.Tokens[i - 1].Tok.isNot(tok::l_paren) &&\n" 3966 " Line.Tokens[i - 1].Tok.isNot(tok::l_square);\n" 3967 " }\n }\n}"); 3968 3969 // Break on an outer level if there was a break on an inner level. 3970 EXPECT_EQ("f(g(h(a, // comment\n" 3971 " b, c),\n" 3972 " d, e),\n" 3973 " x, y);", 3974 format("f(g(h(a, // comment\n" 3975 " b, c), d, e), x, y);")); 3976 3977 // Prefer breaking similar line breaks. 3978 verifyFormat( 3979 "const int kTrackingOptions = NSTrackingMouseMoved |\n" 3980 " NSTrackingMouseEnteredAndExited |\n" 3981 " NSTrackingActiveAlways;"); 3982 } 3983 3984 TEST_F(FormatTest, FormatsDeclarationsOnePerLine) { 3985 FormatStyle NoBinPacking = getGoogleStyle(); 3986 NoBinPacking.BinPackParameters = false; 3987 NoBinPacking.BinPackArguments = true; 3988 verifyFormat("void f() {\n" 3989 " f(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaa,\n" 3990 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 3991 "}", 3992 NoBinPacking); 3993 verifyFormat("void f(int aaaaaaaaaaaaaaaaaaaa,\n" 3994 " int aaaaaaaaaaaaaaaaaaaa,\n" 3995 " int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 3996 NoBinPacking); 3997 } 3998 3999 TEST_F(FormatTest, FormatsOneParameterPerLineIfNecessary) { 4000 FormatStyle NoBinPacking = getGoogleStyle(); 4001 NoBinPacking.BinPackParameters = false; 4002 NoBinPacking.BinPackArguments = false; 4003 verifyFormat("f(aaaaaaaaaaaaaaaaaaaa,\n" 4004 " aaaaaaaaaaaaaaaaaaaa,\n" 4005 " aaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaa);", 4006 NoBinPacking); 4007 verifyFormat("aaaaaaa(aaaaaaaaaaaaa,\n" 4008 " aaaaaaaaaaaaa,\n" 4009 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));", 4010 NoBinPacking); 4011 verifyFormat( 4012 "aaaaaaaa(aaaaaaaaaaaaa,\n" 4013 " aaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4014 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)),\n" 4015 " aaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4016 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)));", 4017 NoBinPacking); 4018 verifyFormat("aaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 4019 " .aaaaaaaaaaaaaaaaaa();", 4020 NoBinPacking); 4021 verifyFormat("void f() {\n" 4022 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4023 " aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaa, aaaaaaaaaaa);\n" 4024 "}", 4025 NoBinPacking); 4026 4027 verifyFormat( 4028 "aaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4029 " aaaaaaaaaaaa,\n" 4030 " aaaaaaaaaaaa);", 4031 NoBinPacking); 4032 verifyFormat( 4033 "somefunction(someotherFunction(ddddddddddddddddddddddddddddddddddd,\n" 4034 " ddddddddddddddddddddddddddddd),\n" 4035 " test);", 4036 NoBinPacking); 4037 4038 verifyFormat("std::vector<aaaaaaaaaaaaaaaaaaaaaaa,\n" 4039 " aaaaaaaaaaaaaaaaaaaaaaa,\n" 4040 " aaaaaaaaaaaaaaaaaaaaaaa> aaaaaaaaaaaaaaaaaa;", 4041 NoBinPacking); 4042 verifyFormat("a(\"a\"\n" 4043 " \"a\",\n" 4044 " a);"); 4045 4046 NoBinPacking.AllowAllParametersOfDeclarationOnNextLine = false; 4047 verifyFormat("void aaaaaaaaaa(aaaaaaaaa,\n" 4048 " aaaaaaaaa,\n" 4049 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4050 NoBinPacking); 4051 verifyFormat( 4052 "void f() {\n" 4053 " aaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaa, aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa)\n" 4054 " .aaaaaaa();\n" 4055 "}", 4056 NoBinPacking); 4057 verifyFormat( 4058 "template <class SomeType, class SomeOtherType>\n" 4059 "SomeType SomeFunction(SomeType Type, SomeOtherType OtherType) {}", 4060 NoBinPacking); 4061 } 4062 4063 TEST_F(FormatTest, AdaptiveOnePerLineFormatting) { 4064 FormatStyle Style = getLLVMStyleWithColumns(15); 4065 Style.ExperimentalAutoDetectBinPacking = true; 4066 EXPECT_EQ("aaa(aaaa,\n" 4067 " aaaa,\n" 4068 " aaaa);\n" 4069 "aaa(aaaa,\n" 4070 " aaaa,\n" 4071 " aaaa);", 4072 format("aaa(aaaa,\n" // one-per-line 4073 " aaaa,\n" 4074 " aaaa );\n" 4075 "aaa(aaaa, aaaa, aaaa);", // inconclusive 4076 Style)); 4077 EXPECT_EQ("aaa(aaaa, aaaa,\n" 4078 " aaaa);\n" 4079 "aaa(aaaa, aaaa,\n" 4080 " aaaa);", 4081 format("aaa(aaaa, aaaa,\n" // bin-packed 4082 " aaaa );\n" 4083 "aaa(aaaa, aaaa, aaaa);", // inconclusive 4084 Style)); 4085 } 4086 4087 TEST_F(FormatTest, FormatsBuilderPattern) { 4088 verifyFormat( 4089 "return llvm::StringSwitch<Reference::Kind>(name)\n" 4090 " .StartsWith(\".eh_frame_hdr\", ORDER_EH_FRAMEHDR)\n" 4091 " .StartsWith(\".eh_frame\", ORDER_EH_FRAME)\n" 4092 " .StartsWith(\".init\", ORDER_INIT)\n" 4093 " .StartsWith(\".fini\", ORDER_FINI)\n" 4094 " .StartsWith(\".hash\", ORDER_HASH)\n" 4095 " .Default(ORDER_TEXT);\n"); 4096 4097 verifyFormat("return aaaaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa() <\n" 4098 " aaaaaaaaaaaaaaa->aaaaa().aaaaaaaaaaaaa().aaaaaa();"); 4099 verifyFormat( 4100 "aaaaaaa->aaaaaaa->aaaaaaaaaaaaaaaa(\n" 4101 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4102 " ->aaaaaaaa(aaaaaaaaaaaaaaa);"); 4103 verifyFormat( 4104 "aaaaaaaaaaaaaaaaaaa()->aaaaaa(bbbbb)->aaaaaaaaaaaaaaaaaaa( // break\n" 4105 " aaaaaaaaaaaaaa);"); 4106 verifyFormat( 4107 "aaaaaaaaaaaaaaaaaaaaaaa *aaaaaaaaa =\n" 4108 " aaaaaa->aaaaaaaaaaaa()\n" 4109 " ->aaaaaaaaaaaaaaaa(\n" 4110 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4111 " ->aaaaaaaaaaaaaaaaa();"); 4112 verifyGoogleFormat( 4113 "void f() {\n" 4114 " someo->Add((new util::filetools::Handler(dir))\n" 4115 " ->OnEvent1(NewPermanentCallback(\n" 4116 " this, &HandlerHolderClass::EventHandlerCBA))\n" 4117 " ->OnEvent2(NewPermanentCallback(\n" 4118 " this, &HandlerHolderClass::EventHandlerCBB))\n" 4119 " ->OnEvent3(NewPermanentCallback(\n" 4120 " this, &HandlerHolderClass::EventHandlerCBC))\n" 4121 " ->OnEvent5(NewPermanentCallback(\n" 4122 " this, &HandlerHolderClass::EventHandlerCBD))\n" 4123 " ->OnEvent6(NewPermanentCallback(\n" 4124 " this, &HandlerHolderClass::EventHandlerCBE)));\n" 4125 "}"); 4126 4127 verifyFormat( 4128 "aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa().aaaaaaaaaaa();"); 4129 verifyFormat("aaaaaaaaaaaaaaa()\n" 4130 " .aaaaaaaaaaaaaaa()\n" 4131 " .aaaaaaaaaaaaaaa()\n" 4132 " .aaaaaaaaaaaaaaa()\n" 4133 " .aaaaaaaaaaaaaaa();"); 4134 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4135 " .aaaaaaaaaaaaaaa()\n" 4136 " .aaaaaaaaaaaaaaa()\n" 4137 " .aaaaaaaaaaaaaaa();"); 4138 verifyFormat("aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4139 " .aaaaaaaaaaaaaaa.aaaaaaaaaaaaaaa()\n" 4140 " .aaaaaaaaaaaaaaa();"); 4141 verifyFormat("aaaaaaaaaaaaa->aaaaaaaaaaaaaaaaaaaaaaaa()\n" 4142 " ->aaaaaaaaaaaaaae(0)\n" 4143 " ->aaaaaaaaaaaaaaa();"); 4144 4145 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 4146 " .aaaaaaaaaaaaaaaaaaaaaaaaaa()\n" 4147 " .has<bbbbbbbbbbbbbbbbbbbbb>();"); 4148 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaa.aaaaaaaaaaaaa()\n" 4149 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<\n" 4150 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>();"); 4151 4152 // Prefer not to break after empty parentheses. 4153 verifyFormat("FirstToken->WhitespaceRange.getBegin().getLocWithOffset(\n" 4154 " First->LastNewlineOffset);"); 4155 } 4156 4157 TEST_F(FormatTest, BreaksAccordingToOperatorPrecedence) { 4158 verifyFormat( 4159 "if (aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 4160 " bbbbbbbbbbbbbbbbbbbbbbbbb && ccccccccccccccccccccccccc) {\n}"); 4161 verifyFormat( 4162 "if (aaaaaaaaaaaaaaaaaaaaaaaaa or\n" 4163 " bbbbbbbbbbbbbbbbbbbbbbbbb and cccccccccccccccccccccccc) {\n}"); 4164 4165 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa && bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 4166 " ccccccccccccccccccccccccc) {\n}"); 4167 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa and bbbbbbbbbbbbbbbbbbbbbbbb or\n" 4168 " ccccccccccccccccccccccccc) {\n}"); 4169 4170 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb ||\n" 4171 " ccccccccccccccccccccccccc) {\n}"); 4172 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb or\n" 4173 " ccccccccccccccccccccccccc) {\n}"); 4174 4175 verifyFormat( 4176 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa || bbbbbbbbbbbbbbbbbbbbbbbbb) &&\n" 4177 " ccccccccccccccccccccccccc) {\n}"); 4178 verifyFormat( 4179 "if ((aaaaaaaaaaaaaaaaaaaaaaaaa or bbbbbbbbbbbbbbbbbbbbbbbbb) and\n" 4180 " ccccccccccccccccccccccccc) {\n}"); 4181 4182 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA ||\n" 4183 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB ||\n" 4184 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC ||\n" 4185 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 4186 verifyFormat("return aaaa & AAAAAAAAAAAAAAAAAAAAAAAAAAAAA or\n" 4187 " bbbb & BBBBBBBBBBBBBBBBBBBBBBBBBBBBB or\n" 4188 " cccc & CCCCCCCCCCCCCCCCCCCCCCCCCC or\n" 4189 " dddd & DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD;"); 4190 4191 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa ||\n" 4192 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) &&\n" 4193 " aaaaaaaaaaaaaaa != aa) {\n}"); 4194 verifyFormat("if ((aaaaaaaaaa != aaaaaaaaaaaaaaa or\n" 4195 " aaaaaaaaaaaaaaaaaaaaaaaa() >= aaaaaaaaaaaaaaaaaaaa) and\n" 4196 " aaaaaaaaaaaaaaa != aa) {\n}"); 4197 } 4198 4199 TEST_F(FormatTest, BreaksAfterAssignments) { 4200 verifyFormat( 4201 "unsigned Cost =\n" 4202 " TTI.getMemoryOpCost(I->getOpcode(), VectorTy, SI->getAlignment(),\n" 4203 " SI->getPointerAddressSpaceee());\n"); 4204 verifyFormat( 4205 "CharSourceRange LineRange = CharSourceRange::getTokenRange(\n" 4206 " Line.Tokens.front().Tok.getLo(), Line.Tokens.back().Tok.getLoc());"); 4207 4208 verifyFormat( 4209 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaa = aaaaaaaaaaaaaa(0).aaaa().aaaaaaaaa(\n" 4210 " aaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaa);"); 4211 verifyFormat("unsigned OriginalStartColumn =\n" 4212 " SourceMgr.getSpellingColumnNumber(\n" 4213 " Current.FormatTok.getStartOfNonWhitespace()) -\n" 4214 " 1;"); 4215 } 4216 4217 TEST_F(FormatTest, AlignsAfterAssignments) { 4218 verifyFormat( 4219 "int Result = aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4220 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4221 verifyFormat( 4222 "Result += aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4223 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4224 verifyFormat( 4225 "Result >>= aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4226 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4227 verifyFormat( 4228 "int Result = (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4229 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 4230 verifyFormat( 4231 "double LooooooooooooooooooooooooongResult = aaaaaaaaaaaaaaaaaaaaaaaa +\n" 4232 " aaaaaaaaaaaaaaaaaaaaaaaa +\n" 4233 " aaaaaaaaaaaaaaaaaaaaaaaa;"); 4234 } 4235 4236 TEST_F(FormatTest, AlignsAfterReturn) { 4237 verifyFormat( 4238 "return aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4239 " aaaaaaaaaaaaaaaaaaaaaaaaa;"); 4240 verifyFormat( 4241 "return (aaaaaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4242 " aaaaaaaaaaaaaaaaaaaaaaaaa);"); 4243 verifyFormat( 4244 "return aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 4245 " aaaaaaaaaaaaaaaaaaaaaa();"); 4246 verifyFormat( 4247 "return (aaaaaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa >=\n" 4248 " aaaaaaaaaaaaaaaaaaaaaa());"); 4249 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4250 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4251 verifyFormat("return aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4252 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) &&\n" 4253 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4254 verifyFormat("return\n" 4255 " // true if code is one of a or b.\n" 4256 " code == a || code == b;"); 4257 } 4258 4259 TEST_F(FormatTest, AlignsAfterOpenBracket) { 4260 verifyFormat( 4261 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" 4262 " aaaaaaaaa aaaaaaa) {}"); 4263 verifyFormat( 4264 "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" 4265 " aaaaaaaaaaa aaaaaaaaa);"); 4266 verifyFormat( 4267 "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" 4268 " aaaaaaaaaaaaaaaaaaaaa));"); 4269 FormatStyle Style = getLLVMStyle(); 4270 Style.AlignAfterOpenBracket = false; 4271 verifyFormat( 4272 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4273 " aaaaaaaaaaa aaaaaaaa, aaaaaaaaa aaaaaaa) {}", 4274 Style); 4275 verifyFormat( 4276 "SomeLongVariableName->someVeryLongFunctionName(\n" 4277 " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaa aaaaaaaaa);", 4278 Style); 4279 verifyFormat( 4280 "SomeLongVariableName->someFunction(\n" 4281 " foooooooo(aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaa));", 4282 Style); 4283 verifyFormat( 4284 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaa aaaaaaaa,\n" 4285 " aaaaaaaaa aaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {}", 4286 Style); 4287 verifyFormat( 4288 "SomeLongVariableName->someVeryLongFunctionName(aaaaaaaaaaa aaaaaaaaa,\n" 4289 " aaaaaaaaaaa aaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4290 Style); 4291 verifyFormat( 4292 "SomeLongVariableName->someFunction(foooooooo(aaaaaaaaaaaaaaa,\n" 4293 " aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa));", 4294 Style); 4295 } 4296 4297 TEST_F(FormatTest, ParenthesesAndOperandAlignment) { 4298 FormatStyle Style = getLLVMStyleWithColumns(40); 4299 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4300 " bbbbbbbbbbbbbbbbbbbbbb);", 4301 Style); 4302 Style.AlignAfterOpenBracket = true; 4303 Style.AlignOperands = false; 4304 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4305 " bbbbbbbbbbbbbbbbbbbbbb);", 4306 Style); 4307 Style.AlignAfterOpenBracket = false; 4308 Style.AlignOperands = true; 4309 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4310 " bbbbbbbbbbbbbbbbbbbbbb);", 4311 Style); 4312 Style.AlignAfterOpenBracket = false; 4313 Style.AlignOperands = false; 4314 verifyFormat("int a = f(aaaaaaaaaaaaaaaaaaaaaa &&\n" 4315 " bbbbbbbbbbbbbbbbbbbbbb);", 4316 Style); 4317 } 4318 4319 TEST_F(FormatTest, BreaksConditionalExpressions) { 4320 verifyFormat( 4321 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4322 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4323 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4324 verifyFormat( 4325 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4326 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4327 verifyFormat( 4328 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa)\n" 4329 " : aaaaaaaaaaaaa);"); 4330 verifyFormat( 4331 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4332 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4333 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4334 " aaaaaaaaaaaaa);"); 4335 verifyFormat( 4336 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4337 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4338 " aaaaaaaaaaaaa);"); 4339 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4340 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4341 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4342 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4343 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4344 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4345 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4346 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4347 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4348 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4349 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4350 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4351 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4352 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4353 " ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4354 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4355 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4356 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4357 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4358 " : aaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4359 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 4360 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4361 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4362 " : aaaaaaaaaaaaaaaa;"); 4363 verifyFormat( 4364 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4365 " ? aaaaaaaaaaaaaaa\n" 4366 " : aaaaaaaaaaaaaaa;"); 4367 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 4368 " aaaaaaaaa\n" 4369 " ? b\n" 4370 " : c);"); 4371 verifyFormat("return aaaa == bbbb\n" 4372 " // comment\n" 4373 " ? aaaa\n" 4374 " : bbbb;"); 4375 verifyFormat( 4376 "unsigned Indent =\n" 4377 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0\n" 4378 " ? IndentForLevel[TheLine.Level]\n" 4379 " : TheLine * 2,\n" 4380 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4381 getLLVMStyleWithColumns(70)); 4382 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4383 " ? aaaaaaaaaaaaaaa\n" 4384 " : bbbbbbbbbbbbbbb //\n" 4385 " ? ccccccccccccccc\n" 4386 " : ddddddddddddddd;"); 4387 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa //\n" 4388 " ? aaaaaaaaaaaaaaa\n" 4389 " : (bbbbbbbbbbbbbbb //\n" 4390 " ? ccccccccccccccc\n" 4391 " : ddddddddddddddd);"); 4392 verifyFormat( 4393 "int aaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4394 " ? aaaaaaaaaaaaaaaaaaaaaaaaa +\n" 4395 " aaaaaaaaaaaaaaaaaaaaa +\n" 4396 " aaaaaaaaaaaaaaaaaaaaa\n" 4397 " : aaaaaaaaaa;"); 4398 verifyFormat( 4399 "aaaaaa = aaaaaaaaaaaa\n" 4400 " ? aaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4401 " : aaaaaaaaaaaaaaaaaaaaaa\n" 4402 " : aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4403 4404 FormatStyle NoBinPacking = getLLVMStyle(); 4405 NoBinPacking.BinPackArguments = false; 4406 verifyFormat( 4407 "void f() {\n" 4408 " g(aaa,\n" 4409 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4410 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4411 " ? aaaaaaaaaaaaaaa\n" 4412 " : aaaaaaaaaaaaaaa);\n" 4413 "}", 4414 NoBinPacking); 4415 verifyFormat( 4416 "void f() {\n" 4417 " g(aaa,\n" 4418 " aaaaaaaaaa == aaaaaaaaaa ? aaaa : aaaaa,\n" 4419 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4420 " ?: aaaaaaaaaaaaaaa);\n" 4421 "}", 4422 NoBinPacking); 4423 4424 verifyFormat("SomeFunction(aaaaaaaaaaaaaaaaa,\n" 4425 " // comment.\n" 4426 " ccccccccccccccccccccccccccccccccccccccc\n" 4427 " ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4428 " : bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);"); 4429 4430 // Assignments in conditional expressions. Apparently not uncommon :-(. 4431 verifyFormat("return a != b\n" 4432 " // comment\n" 4433 " ? a = b\n" 4434 " : a = b;"); 4435 verifyFormat("return a != b\n" 4436 " // comment\n" 4437 " ? a = a != b\n" 4438 " // comment\n" 4439 " ? a = b\n" 4440 " : a\n" 4441 " : a;\n"); 4442 verifyFormat("return a != b\n" 4443 " // comment\n" 4444 " ? a\n" 4445 " : a = a != b\n" 4446 " // comment\n" 4447 " ? a = b\n" 4448 " : a;"); 4449 } 4450 4451 TEST_F(FormatTest, BreaksConditionalExpressionsAfterOperator) { 4452 FormatStyle Style = getLLVMStyle(); 4453 Style.BreakBeforeTernaryOperators = false; 4454 Style.ColumnLimit = 70; 4455 verifyFormat( 4456 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4457 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4458 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4459 Style); 4460 verifyFormat( 4461 "aaaa(aaaaaaaaaaaaaaaaaaaa, aaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4462 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4463 Style); 4464 verifyFormat( 4465 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaa ? aaaa(aaaaaa) :\n" 4466 " aaaaaaaaaaaaa);", 4467 Style); 4468 verifyFormat( 4469 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4470 " aaaaaaaaaaaaaaaa ? aaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4471 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4472 " aaaaaaaaaaaaa);", 4473 Style); 4474 verifyFormat( 4475 "aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4476 " aaaaaaaaaaaaaaaa ?: aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4477 " aaaaaaaaaaaaa);", 4478 Style); 4479 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4480 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4481 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4482 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4483 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4484 Style); 4485 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4486 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4487 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4488 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) :\n" 4489 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4490 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4491 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4492 Style); 4493 verifyFormat("aaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4494 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?:\n" 4495 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4496 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa),\n" 4497 " aaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4498 Style); 4499 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4500 " aaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4501 " aaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4502 Style); 4503 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaa =\n" 4504 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4505 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :\n" 4506 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4507 Style); 4508 verifyFormat( 4509 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa == aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ?\n" 4510 " aaaaaaaaaaaaaaa :\n" 4511 " aaaaaaaaaaaaaaa;", 4512 Style); 4513 verifyFormat("f(aaaaaaaaaaaaaaaa == // force break\n" 4514 " aaaaaaaaa ?\n" 4515 " b :\n" 4516 " c);", 4517 Style); 4518 verifyFormat( 4519 "unsigned Indent =\n" 4520 " format(TheLine.First, IndentForLevel[TheLine.Level] >= 0 ?\n" 4521 " IndentForLevel[TheLine.Level] :\n" 4522 " TheLine * 2,\n" 4523 " TheLine.InPPDirective, PreviousEndOfLineColumn);", 4524 Style); 4525 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4526 " aaaaaaaaaaaaaaa :\n" 4527 " bbbbbbbbbbbbbbb ? //\n" 4528 " ccccccccccccccc :\n" 4529 " ddddddddddddddd;", 4530 Style); 4531 verifyFormat("bool aaaaaa = aaaaaaaaaaaaa ? //\n" 4532 " aaaaaaaaaaaaaaa :\n" 4533 " (bbbbbbbbbbbbbbb ? //\n" 4534 " ccccccccccccccc :\n" 4535 " ddddddddddddddd);", 4536 Style); 4537 } 4538 4539 TEST_F(FormatTest, DeclarationsOfMultipleVariables) { 4540 verifyFormat("bool aaaaaaaaaaaaaaaaa = aaaaaa->aaaaaaaaaaaaaaaaa(),\n" 4541 " aaaaaaaaaaa = aaaaaa->aaaaaaaaaaa();"); 4542 verifyFormat("bool a = true, b = false;"); 4543 4544 verifyFormat("bool aaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4545 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa),\n" 4546 " bbbbbbbbbbbbbbbbbbbbbbbbb =\n" 4547 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb(bbbbbbbbbbbbbbbb);"); 4548 verifyFormat( 4549 "bool aaaaaaaaaaaaaaaaaaaaa =\n" 4550 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb && cccccccccccccccccccccccccccc,\n" 4551 " d = e && f;"); 4552 verifyFormat("aaaaaaaaa a = aaaaaaaaaaaaaaaaaaaa, b = bbbbbbbbbbbbbbbbbbbb,\n" 4553 " c = cccccccccccccccccccc, d = dddddddddddddddddddd;"); 4554 verifyFormat("aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" 4555 " *c = ccccccccccccccccccc, *d = ddddddddddddddddddd;"); 4556 verifyFormat("aaaaaaaaa ***a = aaaaaaaaaaaaaaaaaaa, ***b = bbbbbbbbbbbbbbb,\n" 4557 " ***c = ccccccccccccccccccc, ***d = ddddddddddddddd;"); 4558 4559 FormatStyle Style = getGoogleStyle(); 4560 Style.PointerAlignment = FormatStyle::PAS_Left; 4561 Style.DerivePointerAlignment = false; 4562 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4563 " *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaa,\n" 4564 " *b = bbbbbbbbbbbbbbbbbbb;", 4565 Style); 4566 verifyFormat( 4567 "aaaaaaaaa *a = aaaaaaaaaaaaaaaaaaa, *b = bbbbbbbbbbbbbbbbbbb,\n" 4568 " *b = bbbbbbbbbbbbbbbbbbb, *d = ddddddddddddddddddd;", 4569 Style); 4570 } 4571 4572 TEST_F(FormatTest, ConditionalExpressionsInBrackets) { 4573 verifyFormat("arr[foo ? bar : baz];"); 4574 verifyFormat("f()[foo ? bar : baz];"); 4575 verifyFormat("(a + b)[foo ? bar : baz];"); 4576 verifyFormat("arr[foo ? (4 > 5 ? 4 : 5) : 5 < 5 ? 5 : 7];"); 4577 } 4578 4579 TEST_F(FormatTest, AlignsStringLiterals) { 4580 verifyFormat("loooooooooooooooooooooooooongFunction(\"short literal \"\n" 4581 " \"short literal\");"); 4582 verifyFormat( 4583 "looooooooooooooooooooooooongFunction(\n" 4584 " \"short literal\"\n" 4585 " \"looooooooooooooooooooooooooooooooooooooooooooooooong literal\");"); 4586 verifyFormat("someFunction(\"Always break between multi-line\"\n" 4587 " \" string literals\",\n" 4588 " and, other, parameters);"); 4589 EXPECT_EQ("fun + \"1243\" /* comment */\n" 4590 " \"5678\";", 4591 format("fun + \"1243\" /* comment */\n" 4592 " \"5678\";", 4593 getLLVMStyleWithColumns(28))); 4594 EXPECT_EQ( 4595 "aaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 4596 " \"aaaaaaaaaaaaaaaaaaaaa\"\n" 4597 " \"aaaaaaaaaaaaaaaa\";", 4598 format("aaaaaa =" 4599 "\"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaaaa " 4600 "aaaaaaaaaaaaaaaaaaaaa\" " 4601 "\"aaaaaaaaaaaaaaaa\";")); 4602 verifyFormat("a = a + \"a\"\n" 4603 " \"a\"\n" 4604 " \"a\";"); 4605 verifyFormat("f(\"a\", \"b\"\n" 4606 " \"c\");"); 4607 4608 verifyFormat( 4609 "#define LL_FORMAT \"ll\"\n" 4610 "printf(\"aaaaa: %d, bbbbbb: %\" LL_FORMAT \"d, cccccccc: %\" LL_FORMAT\n" 4611 " \"d, ddddddddd: %\" LL_FORMAT \"d\");"); 4612 4613 verifyFormat("#define A(X) \\\n" 4614 " \"aaaaa\" #X \"bbbbbb\" \\\n" 4615 " \"ccccc\"", 4616 getLLVMStyleWithColumns(23)); 4617 verifyFormat("#define A \"def\"\n" 4618 "f(\"abc\" A \"ghi\"\n" 4619 " \"jkl\");"); 4620 4621 verifyFormat("f(L\"a\"\n" 4622 " L\"b\")"); 4623 verifyFormat("#define A(X) \\\n" 4624 " L\"aaaaa\" #X L\"bbbbbb\" \\\n" 4625 " L\"ccccc\"", 4626 getLLVMStyleWithColumns(25)); 4627 } 4628 4629 TEST_F(FormatTest, AlwaysBreakAfterDefinitionReturnType) { 4630 FormatStyle AfterType = getLLVMStyle(); 4631 AfterType.AlwaysBreakAfterDefinitionReturnType = true; 4632 verifyFormat("const char *\n" 4633 "f(void) {\n" // Break here. 4634 " return \"\";\n" 4635 "}\n" 4636 "const char *bar(void);\n", // No break here. 4637 AfterType); 4638 verifyFormat("template <class T>\n" 4639 "T *\n" 4640 "f(T &c) {\n" // Break here. 4641 " return NULL;\n" 4642 "}\n" 4643 "template <class T> T *f(T &c);\n", // No break here. 4644 AfterType); 4645 AfterType.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 4646 verifyFormat("const char *\n" 4647 "f(void)\n" // Break here. 4648 "{\n" 4649 " return \"\";\n" 4650 "}\n" 4651 "const char *bar(void);\n", // No break here. 4652 AfterType); 4653 verifyFormat("template <class T>\n" 4654 "T *\n" // Problem here: no line break 4655 "f(T &c)\n" // Break here. 4656 "{\n" 4657 " return NULL;\n" 4658 "}\n" 4659 "template <class T> T *f(T &c);\n", // No break here. 4660 AfterType); 4661 } 4662 4663 TEST_F(FormatTest, AlwaysBreakBeforeMultilineStrings) { 4664 FormatStyle NoBreak = getLLVMStyle(); 4665 NoBreak.AlwaysBreakBeforeMultilineStrings = false; 4666 FormatStyle Break = getLLVMStyle(); 4667 Break.AlwaysBreakBeforeMultilineStrings = true; 4668 verifyFormat("aaaa = \"bbbb\"\n" 4669 " \"cccc\";", 4670 NoBreak); 4671 verifyFormat("aaaa =\n" 4672 " \"bbbb\"\n" 4673 " \"cccc\";", 4674 Break); 4675 verifyFormat("aaaa(\"bbbb\"\n" 4676 " \"cccc\");", 4677 NoBreak); 4678 verifyFormat("aaaa(\n" 4679 " \"bbbb\"\n" 4680 " \"cccc\");", 4681 Break); 4682 verifyFormat("aaaa(qqq, \"bbbb\"\n" 4683 " \"cccc\");", 4684 NoBreak); 4685 verifyFormat("aaaa(qqq,\n" 4686 " \"bbbb\"\n" 4687 " \"cccc\");", 4688 Break); 4689 verifyFormat("aaaa(qqq,\n" 4690 " L\"bbbb\"\n" 4691 " L\"cccc\");", 4692 Break); 4693 4694 // As we break before unary operators, breaking right after them is bad. 4695 verifyFormat("string foo = abc ? \"x\"\n" 4696 " \"blah blah blah blah blah blah\"\n" 4697 " : \"y\";", 4698 Break); 4699 4700 // Don't break if there is no column gain. 4701 verifyFormat("f(\"aaaa\"\n" 4702 " \"bbbb\");", 4703 Break); 4704 4705 // Treat literals with escaped newlines like multi-line string literals. 4706 EXPECT_EQ("x = \"a\\\n" 4707 "b\\\n" 4708 "c\";", 4709 format("x = \"a\\\n" 4710 "b\\\n" 4711 "c\";", 4712 NoBreak)); 4713 EXPECT_EQ("x =\n" 4714 " \"a\\\n" 4715 "b\\\n" 4716 "c\";", 4717 format("x = \"a\\\n" 4718 "b\\\n" 4719 "c\";", 4720 Break)); 4721 4722 // Exempt ObjC strings for now. 4723 EXPECT_EQ("NSString *const kString = @\"aaaa\"\n" 4724 " \"bbbb\";", 4725 format("NSString *const kString = @\"aaaa\"\n" 4726 "\"bbbb\";", 4727 Break)); 4728 4729 Break.ColumnLimit = 0; 4730 verifyFormat("const char *hello = \"hello llvm\";", Break); 4731 } 4732 4733 TEST_F(FormatTest, AlignsPipes) { 4734 verifyFormat( 4735 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4736 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4737 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4738 verifyFormat( 4739 "aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaa\n" 4740 " << aaaaaaaaaaaaaaaaaaaa;"); 4741 verifyFormat( 4742 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4743 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4744 verifyFormat( 4745 "llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"\n" 4746 " \"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\"\n" 4747 " << \"ccccccccccccccccccccccccccccccccccccccccccccccccc\";"); 4748 verifyFormat( 4749 "aaaaaaaa << (aaaaaaaaaaaaaaaaaaa << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4750 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4751 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4752 verifyFormat( 4753 "llvm::errs() << \"a: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4754 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4755 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4756 verifyFormat( 4757 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4758 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4759 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4760 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 4761 verifyFormat( 4762 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4763 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4764 4765 verifyFormat("return out << \"somepacket = {\\n\"\n" 4766 " << \" aaaaaa = \" << pkt.aaaaaa << \"\\n\"\n" 4767 " << \" bbbb = \" << pkt.bbbb << \"\\n\"\n" 4768 " << \" cccccc = \" << pkt.cccccc << \"\\n\"\n" 4769 " << \" ddd = [\" << pkt.ddd << \"]\\n\"\n" 4770 " << \"}\";"); 4771 4772 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 4773 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa\n" 4774 " << \"aaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaa;"); 4775 verifyFormat( 4776 "llvm::outs() << \"aaaaaaaaaaaaaaaaa = \" << aaaaaaaaaaaaaaaaa\n" 4777 " << \"bbbbbbbbbbbbbbbbb = \" << bbbbbbbbbbbbbbbbb\n" 4778 " << \"ccccccccccccccccc = \" << ccccccccccccccccc\n" 4779 " << \"ddddddddddddddddd = \" << ddddddddddddddddd\n" 4780 " << \"eeeeeeeeeeeeeeeee = \" << eeeeeeeeeeeeeeeee;"); 4781 verifyFormat("llvm::outs() << aaaaaaaaaaaaaaaaaaaaaaaa << \"=\"\n" 4782 " << bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 4783 verifyFormat( 4784 "void f() {\n" 4785 " llvm::outs() << \"aaaaaaaaaaaaaaaaaaaa: \"\n" 4786 " << aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaa);\n" 4787 "}"); 4788 verifyFormat("llvm::outs() << \"aaaaaaaaaaaaaaaa: \"\n" 4789 " << aaaaaaaa.aaaaaaaaaaaa(aaa)->aaaaaaaaaaaaaa();"); 4790 4791 // Breaking before the first "<<" is generally not desirable. 4792 verifyFormat( 4793 "llvm::errs()\n" 4794 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4795 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4796 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4797 " << \"aaaaaaaaaaaaaaaaaaa: \" << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4798 getLLVMStyleWithColumns(70)); 4799 verifyFormat("llvm::errs() << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4800 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4801 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4802 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4803 " << \"aaaaaaaaaaaaaaaaaaa: \"\n" 4804 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 4805 getLLVMStyleWithColumns(70)); 4806 4807 // But sometimes, breaking before the first "<<" is desirable. 4808 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaa, aaaaaaaa)\n" 4809 " << aaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaa);"); 4810 verifyFormat("Diag(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbb)\n" 4811 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4812 " << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4813 verifyFormat("SemaRef.Diag(Loc, diag::note_for_range_begin_end)\n" 4814 " << BEF << IsTemplate << Description << E->getType();"); 4815 4816 verifyFormat( 4817 "llvm::errs() << aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4818 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4819 4820 // Incomplete string literal. 4821 EXPECT_EQ("llvm::errs() << \"\n" 4822 " << a;", 4823 format("llvm::errs() << \"\n<<a;")); 4824 4825 verifyFormat("void f() {\n" 4826 " CHECK_EQ(aaaa, (*bbbbbbbbb)->cccccc)\n" 4827 " << \"qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\";\n" 4828 "}"); 4829 4830 // Handle 'endl'. 4831 verifyFormat("llvm::errs() << aaaaaaaaaaaaaaaaaaaaaa << endl\n" 4832 " << bbbbbbbbbbbbbbbbbbbbbb << endl;"); 4833 verifyFormat("llvm::errs() << endl << bbbbbbbbbbbbbbbbbbbbbb << endl;"); 4834 } 4835 4836 TEST_F(FormatTest, UnderstandsEquals) { 4837 verifyFormat( 4838 "aaaaaaaaaaaaaaaaa =\n" 4839 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 4840 verifyFormat( 4841 "if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4842 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 4843 verifyFormat( 4844 "if (a) {\n" 4845 " f();\n" 4846 "} else if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4847 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 4848 "}"); 4849 4850 verifyFormat("if (int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 4851 " 100000000 + 10000000) {\n}"); 4852 } 4853 4854 TEST_F(FormatTest, WrapsAtFunctionCallsIfNecessary) { 4855 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 4856 " .looooooooooooooooooooooooooooooooooooooongFunction();"); 4857 4858 verifyFormat("LoooooooooooooooooooooooooooooooooooooongObject\n" 4859 " ->looooooooooooooooooooooooooooooooooooooongFunction();"); 4860 4861 verifyFormat( 4862 "LooooooooooooooooooooooooooooooooongObject->shortFunction(Parameter1,\n" 4863 " Parameter2);"); 4864 4865 verifyFormat( 4866 "ShortObject->shortFunction(\n" 4867 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter1,\n" 4868 " LooooooooooooooooooooooooooooooooooooooooooooooongParameter2);"); 4869 4870 verifyFormat("loooooooooooooongFunction(\n" 4871 " LoooooooooooooongObject->looooooooooooooooongFunction());"); 4872 4873 verifyFormat( 4874 "function(LoooooooooooooooooooooooooooooooooooongObject\n" 4875 " ->loooooooooooooooooooooooooooooooooooooooongFunction());"); 4876 4877 verifyFormat("EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 4878 " .WillRepeatedly(Return(SomeValue));"); 4879 verifyFormat("void f() {\n" 4880 " EXPECT_CALL(SomeObject, SomeFunction(Parameter))\n" 4881 " .Times(2)\n" 4882 " .WillRepeatedly(Return(SomeValue));\n" 4883 "}"); 4884 verifyFormat("SomeMap[std::pair(aaaaaaaaaaaa, bbbbbbbbbbbbbbb)].insert(\n" 4885 " ccccccccccccccccccccccc);"); 4886 verifyFormat("aaaaa(aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4887 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4888 " .aaaaa(aaaaa),\n" 4889 " aaaaaaaaaaaaaaaaaaaaa);"); 4890 verifyFormat("void f() {\n" 4891 " aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4892 " aaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa)->aaaaaaaaa());\n" 4893 "}"); 4894 verifyFormat( 4895 "aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4896 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4897 " .aaaaaaaaaaaaaaa(aa(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4898 " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4899 " aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 4900 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4901 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4902 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 4903 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa()) {\n" 4904 "}"); 4905 4906 // Here, it is not necessary to wrap at "." or "->". 4907 verifyFormat("if (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaa) ||\n" 4908 " aaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n}"); 4909 verifyFormat( 4910 "aaaaaaaaaaa->aaaaaaaaa(\n" 4911 " aaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4912 " aaaaaaaaaaaaaaaaaa->aaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaa));\n"); 4913 4914 verifyFormat( 4915 "aaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4916 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa().aaaaaaaaaaaaaaaaa());"); 4917 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() *\n" 4918 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 4919 verifyFormat("a->aaaaaa()->aaaaaaaaaaa(aaaaaaaa()->aaaaaa()->aaaaa() ||\n" 4920 " aaaaaaaaa()->aaaaaa()->aaaaa());"); 4921 4922 verifyFormat("aaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4923 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4924 " .a();"); 4925 4926 FormatStyle NoBinPacking = getLLVMStyle(); 4927 NoBinPacking.BinPackParameters = false; 4928 verifyFormat("aaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 4929 " .aaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaa)\n" 4930 " .aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaa,\n" 4931 " aaaaaaaaaaaaaaaaaaa,\n" 4932 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);", 4933 NoBinPacking); 4934 4935 // If there is a subsequent call, change to hanging indentation. 4936 verifyFormat( 4937 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4938 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa))\n" 4939 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4940 verifyFormat( 4941 "aaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4942 " aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa));"); 4943 verifyFormat("aaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4944 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4945 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 4946 verifyFormat("aaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4947 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 4948 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 4949 } 4950 4951 TEST_F(FormatTest, WrapsTemplateDeclarations) { 4952 verifyFormat("template <typename T>\n" 4953 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 4954 verifyFormat("template <typename T>\n" 4955 "// T should be one of {A, B}.\n" 4956 "virtual void loooooooooooongFunction(int Param1, int Param2);"); 4957 verifyFormat( 4958 "template <typename T>\n" 4959 "using comment_to_xml_conversion = comment_to_xml_conversion<T, int>;"); 4960 verifyFormat("template <typename T>\n" 4961 "void f(int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram1,\n" 4962 " int Paaaaaaaaaaaaaaaaaaaaaaaaaaaaaaram2);"); 4963 verifyFormat( 4964 "template <typename T>\n" 4965 "void looooooooooooooooooooongFunction(int Paaaaaaaaaaaaaaaaaaaaram1,\n" 4966 " int Paaaaaaaaaaaaaaaaaaaaram2);"); 4967 verifyFormat( 4968 "template <typename T>\n" 4969 "aaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaa,\n" 4970 " aaaaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaaaaa,\n" 4971 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4972 verifyFormat("template <typename T>\n" 4973 "void aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 4974 " int aaaaaaaaaaaaaaaaaaaaaa);"); 4975 verifyFormat( 4976 "template <typename T1, typename T2 = char, typename T3 = char,\n" 4977 " typename T4 = char>\n" 4978 "void f();"); 4979 verifyFormat("template <typename aaaaaaaaaaa, typename bbbbbbbbbbbbb,\n" 4980 " template <typename> class cccccccccccccccccccccc,\n" 4981 " typename ddddddddddddd>\n" 4982 "class C {};"); 4983 verifyFormat( 4984 "aaaaaaaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa>(\n" 4985 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 4986 4987 verifyFormat("void f() {\n" 4988 " a<aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaa>(\n" 4989 " a(aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa));\n" 4990 "}"); 4991 4992 verifyFormat("template <typename T> class C {};"); 4993 verifyFormat("template <typename T> void f();"); 4994 verifyFormat("template <typename T> void f() {}"); 4995 verifyFormat( 4996 "aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 4997 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 4998 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> *aaaa =\n" 4999 " new aaaaaaaaaaaaa<aaaaaaaaaa, aaaaaaaaaaa,\n" 5000 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5001 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa>(\n" 5002 " bbbbbbbbbbbbbbbbbbbbbbbb);", 5003 getLLVMStyleWithColumns(72)); 5004 EXPECT_EQ("static_cast<A< //\n" 5005 " B> *>(\n" 5006 "\n" 5007 " );", 5008 format("static_cast<A<//\n" 5009 " B>*>(\n" 5010 "\n" 5011 " );")); 5012 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5013 " const typename aaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaa);"); 5014 5015 FormatStyle AlwaysBreak = getLLVMStyle(); 5016 AlwaysBreak.AlwaysBreakTemplateDeclarations = true; 5017 verifyFormat("template <typename T>\nclass C {};", AlwaysBreak); 5018 verifyFormat("template <typename T>\nvoid f();", AlwaysBreak); 5019 verifyFormat("template <typename T>\nvoid f() {}", AlwaysBreak); 5020 verifyFormat("void aaaaaaaaaaaaaaaaaaa<aaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5021 " bbbbbbbbbbbbbbbbbbbbbbbbbbbb>(\n" 5022 " ccccccccccccccccccccccccccccccccccccccccccccccc);"); 5023 verifyFormat("template <template <typename> class Fooooooo,\n" 5024 " template <typename> class Baaaaaaar>\n" 5025 "struct C {};", 5026 AlwaysBreak); 5027 verifyFormat("template <typename T> // T can be A, B or C.\n" 5028 "struct C {};", 5029 AlwaysBreak); 5030 } 5031 5032 TEST_F(FormatTest, WrapsAtNestedNameSpecifiers) { 5033 verifyFormat( 5034 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5035 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5036 verifyFormat( 5037 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5038 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5039 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa());"); 5040 5041 // FIXME: Should we have the extra indent after the second break? 5042 verifyFormat( 5043 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5044 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5045 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5046 5047 verifyFormat( 5048 "aaaaaaaaaaaaaaa(bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb::\n" 5049 " cccccccccccccccccccccccccccccccccccccccccccccc());"); 5050 5051 // Breaking at nested name specifiers is generally not desirable. 5052 verifyFormat( 5053 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5054 " aaaaaaaaaaaaaaaaaaaaaaa);"); 5055 5056 verifyFormat( 5057 "aaaaaaaaaaaaaaaaaa(aaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5058 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5059 " aaaaaaaaaaaaaaaaaaaaa);", 5060 getLLVMStyleWithColumns(74)); 5061 5062 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa::\n" 5063 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5064 " .aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa();"); 5065 } 5066 5067 TEST_F(FormatTest, UnderstandsTemplateParameters) { 5068 verifyFormat("A<int> a;"); 5069 verifyFormat("A<A<A<int>>> a;"); 5070 verifyFormat("A<A<A<int, 2>, 3>, 4> a;"); 5071 verifyFormat("bool x = a < 1 || 2 > a;"); 5072 verifyFormat("bool x = 5 < f<int>();"); 5073 verifyFormat("bool x = f<int>() > 5;"); 5074 verifyFormat("bool x = 5 < a<int>::x;"); 5075 verifyFormat("bool x = a < 4 ? a > 2 : false;"); 5076 verifyFormat("bool x = f() ? a < 2 : a > 2;"); 5077 5078 verifyGoogleFormat("A<A<int>> a;"); 5079 verifyGoogleFormat("A<A<A<int>>> a;"); 5080 verifyGoogleFormat("A<A<A<A<int>>>> a;"); 5081 verifyGoogleFormat("A<A<int> > a;"); 5082 verifyGoogleFormat("A<A<A<int> > > a;"); 5083 verifyGoogleFormat("A<A<A<A<int> > > > a;"); 5084 verifyGoogleFormat("A<::A<int>> a;"); 5085 verifyGoogleFormat("A<::A> a;"); 5086 verifyGoogleFormat("A< ::A> a;"); 5087 verifyGoogleFormat("A< ::A<int> > a;"); 5088 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A> >> a;", getGoogleStyle())); 5089 EXPECT_EQ("A<A<A<A>>> a;", format("A<A<A<A>> > a;", getGoogleStyle())); 5090 EXPECT_EQ("A<::A<int>> a;", format("A< ::A<int>> a;", getGoogleStyle())); 5091 EXPECT_EQ("A<::A<int>> a;", format("A<::A<int> > a;", getGoogleStyle())); 5092 5093 verifyFormat("A<A>> a;", getChromiumStyle(FormatStyle::LK_Cpp)); 5094 5095 verifyFormat("test >> a >> b;"); 5096 verifyFormat("test << a >> b;"); 5097 5098 verifyFormat("f<int>();"); 5099 verifyFormat("template <typename T> void f() {}"); 5100 verifyFormat("struct A<std::enable_if<sizeof(T2) < sizeof(int32)>::type>;"); 5101 5102 // Not template parameters. 5103 verifyFormat("return a < b && c > d;"); 5104 verifyFormat("void f() {\n" 5105 " while (a < b && c > d) {\n" 5106 " }\n" 5107 "}"); 5108 verifyFormat("template <typename... Types>\n" 5109 "typename enable_if<0 < sizeof...(Types)>::type Foo() {}"); 5110 5111 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5112 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa >> aaaaa);", 5113 getLLVMStyleWithColumns(60)); 5114 verifyFormat("static_assert(is_convertible<A &&, B>::value, \"AAA\");"); 5115 verifyFormat("Constructor(A... a) : a_(X<A>{std::forward<A>(a)}...) {}"); 5116 } 5117 5118 TEST_F(FormatTest, UnderstandsBinaryOperators) { 5119 verifyFormat("COMPARE(a, ==, b);"); 5120 } 5121 5122 TEST_F(FormatTest, UnderstandsPointersToMembers) { 5123 verifyFormat("int A::*x;"); 5124 verifyFormat("int (S::*func)(void *);"); 5125 verifyFormat("void f() { int (S::*func)(void *); }"); 5126 verifyFormat("typedef bool *(Class::*Member)() const;"); 5127 verifyFormat("void f() {\n" 5128 " (a->*f)();\n" 5129 " a->*x;\n" 5130 " (a.*f)();\n" 5131 " ((*a).*f)();\n" 5132 " a.*x;\n" 5133 "}"); 5134 verifyFormat("void f() {\n" 5135 " (a->*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 5136 " aaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb);\n" 5137 "}"); 5138 verifyFormat( 5139 "(aaaaaaaaaa->*bbbbbbb)(\n" 5140 " aaaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa));"); 5141 FormatStyle Style = getLLVMStyle(); 5142 Style.PointerAlignment = FormatStyle::PAS_Left; 5143 verifyFormat("typedef bool* (Class::*Member)() const;", Style); 5144 } 5145 5146 TEST_F(FormatTest, UnderstandsUnaryOperators) { 5147 verifyFormat("int a = -2;"); 5148 verifyFormat("f(-1, -2, -3);"); 5149 verifyFormat("a[-1] = 5;"); 5150 verifyFormat("int a = 5 + -2;"); 5151 verifyFormat("if (i == -1) {\n}"); 5152 verifyFormat("if (i != -1) {\n}"); 5153 verifyFormat("if (i > -1) {\n}"); 5154 verifyFormat("if (i < -1) {\n}"); 5155 verifyFormat("++(a->f());"); 5156 verifyFormat("--(a->f());"); 5157 verifyFormat("(a->f())++;"); 5158 verifyFormat("a[42]++;"); 5159 verifyFormat("if (!(a->f())) {\n}"); 5160 5161 verifyFormat("a-- > b;"); 5162 verifyFormat("b ? -a : c;"); 5163 verifyFormat("n * sizeof char16;"); 5164 verifyFormat("n * alignof char16;", getGoogleStyle()); 5165 verifyFormat("sizeof(char);"); 5166 verifyFormat("alignof(char);", getGoogleStyle()); 5167 5168 verifyFormat("return -1;"); 5169 verifyFormat("switch (a) {\n" 5170 "case -1:\n" 5171 " break;\n" 5172 "}"); 5173 verifyFormat("#define X -1"); 5174 verifyFormat("#define X -kConstant"); 5175 5176 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {-5, +3};"); 5177 verifyFormat("const NSPoint kBrowserFrameViewPatternOffset = {+5, -3};"); 5178 5179 verifyFormat("int a = /* confusing comment */ -1;"); 5180 // FIXME: The space after 'i' is wrong, but hopefully, this is a rare case. 5181 verifyFormat("int a = i /* confusing comment */++;"); 5182 } 5183 5184 TEST_F(FormatTest, DoesNotIndentRelativeToUnaryOperators) { 5185 verifyFormat("if (!aaaaaaaaaa( // break\n" 5186 " aaaaa)) {\n" 5187 "}"); 5188 verifyFormat("aaaaaaaaaa(!aaaaaaaaaa( // break\n" 5189 " aaaaa));"); 5190 verifyFormat("*aaa = aaaaaaa( // break\n" 5191 " bbbbbb);"); 5192 } 5193 5194 TEST_F(FormatTest, UnderstandsOverloadedOperators) { 5195 verifyFormat("bool operator<();"); 5196 verifyFormat("bool operator>();"); 5197 verifyFormat("bool operator=();"); 5198 verifyFormat("bool operator==();"); 5199 verifyFormat("bool operator!=();"); 5200 verifyFormat("int operator+();"); 5201 verifyFormat("int operator++();"); 5202 verifyFormat("bool operator();"); 5203 verifyFormat("bool operator()();"); 5204 verifyFormat("bool operator[]();"); 5205 verifyFormat("operator bool();"); 5206 verifyFormat("operator int();"); 5207 verifyFormat("operator void *();"); 5208 verifyFormat("operator SomeType<int>();"); 5209 verifyFormat("operator SomeType<int, int>();"); 5210 verifyFormat("operator SomeType<SomeType<int>>();"); 5211 verifyFormat("void *operator new(std::size_t size);"); 5212 verifyFormat("void *operator new[](std::size_t size);"); 5213 verifyFormat("void operator delete(void *ptr);"); 5214 verifyFormat("void operator delete[](void *ptr);"); 5215 verifyFormat("template <typename AAAAAAA, typename BBBBBBB>\n" 5216 "AAAAAAA operator/(const AAAAAAA &a, BBBBBBB &b);"); 5217 5218 verifyFormat( 5219 "ostream &operator<<(ostream &OutputStream,\n" 5220 " SomeReallyLongType WithSomeReallyLongValue);"); 5221 verifyFormat("bool operator<(const aaaaaaaaaaaaaaaaaaaaa &left,\n" 5222 " const aaaaaaaaaaaaaaaaaaaaa &right) {\n" 5223 " return left.group < right.group;\n" 5224 "}"); 5225 verifyFormat("SomeType &operator=(const SomeType &S);"); 5226 verifyFormat("f.template operator()<int>();"); 5227 5228 verifyGoogleFormat("operator void*();"); 5229 verifyGoogleFormat("operator SomeType<SomeType<int>>();"); 5230 verifyGoogleFormat("operator ::A();"); 5231 5232 verifyFormat("using A::operator+;"); 5233 5234 verifyFormat("string // break\n" 5235 "operator()() & {}"); 5236 verifyFormat("string // break\n" 5237 "operator()() && {}"); 5238 } 5239 5240 TEST_F(FormatTest, UnderstandsFunctionRefQualification) { 5241 verifyFormat("Deleted &operator=(const Deleted &)& = default;"); 5242 verifyFormat("Deleted &operator=(const Deleted &)&& = delete;"); 5243 verifyFormat("SomeType MemberFunction(const Deleted &)& = delete;"); 5244 verifyFormat("SomeType MemberFunction(const Deleted &)&& = delete;"); 5245 verifyFormat("Deleted &operator=(const Deleted &)&;"); 5246 verifyFormat("Deleted &operator=(const Deleted &)&&;"); 5247 verifyFormat("SomeType MemberFunction(const Deleted &)&;"); 5248 verifyFormat("SomeType MemberFunction(const Deleted &)&&;"); 5249 5250 verifyGoogleFormat("Deleted& operator=(const Deleted&)& = default;"); 5251 verifyGoogleFormat("SomeType MemberFunction(const Deleted&)& = delete;"); 5252 verifyGoogleFormat("Deleted& operator=(const Deleted&)&;"); 5253 verifyGoogleFormat("SomeType MemberFunction(const Deleted&)&;"); 5254 5255 FormatStyle Spaces = getLLVMStyle(); 5256 Spaces.SpacesInCStyleCastParentheses = true; 5257 verifyFormat("Deleted &operator=(const Deleted &)& = default;", Spaces); 5258 verifyFormat("SomeType MemberFunction(const Deleted &)& = delete;", Spaces); 5259 verifyFormat("Deleted &operator=(const Deleted &)&;", Spaces); 5260 verifyFormat("SomeType MemberFunction(const Deleted &)&;", Spaces); 5261 5262 Spaces.SpacesInCStyleCastParentheses = false; 5263 Spaces.SpacesInParentheses = true; 5264 verifyFormat("Deleted &operator=( const Deleted & )& = default;", Spaces); 5265 verifyFormat("SomeType MemberFunction( const Deleted & )& = delete;", Spaces); 5266 verifyFormat("Deleted &operator=( const Deleted & )&;", Spaces); 5267 verifyFormat("SomeType MemberFunction( const Deleted & )&;", Spaces); 5268 } 5269 5270 TEST_F(FormatTest, UnderstandsNewAndDelete) { 5271 verifyFormat("void f() {\n" 5272 " A *a = new A;\n" 5273 " A *a = new (placement) A;\n" 5274 " delete a;\n" 5275 " delete (A *)a;\n" 5276 "}"); 5277 verifyFormat("new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 5278 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 5279 verifyFormat("auto aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5280 " new (aaaaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaa))\n" 5281 " typename aaaaaaaaaaaaaaaaaaaaaaaa();"); 5282 verifyFormat("delete[] h->p;"); 5283 } 5284 5285 TEST_F(FormatTest, UnderstandsUsesOfStarAndAmp) { 5286 verifyFormat("int *f(int *a) {}"); 5287 verifyFormat("int main(int argc, char **argv) {}"); 5288 verifyFormat("Test::Test(int b) : a(b * b) {}"); 5289 verifyIndependentOfContext("f(a, *a);"); 5290 verifyFormat("void g() { f(*a); }"); 5291 verifyIndependentOfContext("int a = b * 10;"); 5292 verifyIndependentOfContext("int a = 10 * b;"); 5293 verifyIndependentOfContext("int a = b * c;"); 5294 verifyIndependentOfContext("int a += b * c;"); 5295 verifyIndependentOfContext("int a -= b * c;"); 5296 verifyIndependentOfContext("int a *= b * c;"); 5297 verifyIndependentOfContext("int a /= b * c;"); 5298 verifyIndependentOfContext("int a = *b;"); 5299 verifyIndependentOfContext("int a = *b * c;"); 5300 verifyIndependentOfContext("int a = b * *c;"); 5301 verifyIndependentOfContext("return 10 * b;"); 5302 verifyIndependentOfContext("return *b * *c;"); 5303 verifyIndependentOfContext("return a & ~b;"); 5304 verifyIndependentOfContext("f(b ? *c : *d);"); 5305 verifyIndependentOfContext("int a = b ? *c : *d;"); 5306 verifyIndependentOfContext("*b = a;"); 5307 verifyIndependentOfContext("a * ~b;"); 5308 verifyIndependentOfContext("a * !b;"); 5309 verifyIndependentOfContext("a * +b;"); 5310 verifyIndependentOfContext("a * -b;"); 5311 verifyIndependentOfContext("a * ++b;"); 5312 verifyIndependentOfContext("a * --b;"); 5313 verifyIndependentOfContext("a[4] * b;"); 5314 verifyIndependentOfContext("a[a * a] = 1;"); 5315 verifyIndependentOfContext("f() * b;"); 5316 verifyIndependentOfContext("a * [self dostuff];"); 5317 verifyIndependentOfContext("int x = a * (a + b);"); 5318 verifyIndependentOfContext("(a *)(a + b);"); 5319 verifyIndependentOfContext("*(int *)(p & ~3UL) = 0;"); 5320 verifyIndependentOfContext("int *pa = (int *)&a;"); 5321 verifyIndependentOfContext("return sizeof(int **);"); 5322 verifyIndependentOfContext("return sizeof(int ******);"); 5323 verifyIndependentOfContext("return (int **&)a;"); 5324 verifyIndependentOfContext("f((*PointerToArray)[10]);"); 5325 verifyFormat("void f(Type (*parameter)[10]) {}"); 5326 verifyGoogleFormat("return sizeof(int**);"); 5327 verifyIndependentOfContext("Type **A = static_cast<Type **>(P);"); 5328 verifyGoogleFormat("Type** A = static_cast<Type**>(P);"); 5329 verifyFormat("auto a = [](int **&, int ***) {};"); 5330 verifyFormat("auto PointerBinding = [](const char *S) {};"); 5331 verifyFormat("typedef typeof(int(int, int)) *MyFunc;"); 5332 verifyFormat("[](const decltype(*a) &value) {}"); 5333 verifyIndependentOfContext("typedef void (*f)(int *a);"); 5334 verifyIndependentOfContext("int i{a * b};"); 5335 verifyIndependentOfContext("aaa && aaa->f();"); 5336 verifyIndependentOfContext("int x = ~*p;"); 5337 verifyFormat("Constructor() : a(a), area(width * height) {}"); 5338 verifyFormat("Constructor() : a(a), area(a, width * height) {}"); 5339 verifyFormat("void f() { f(a, c * d); }"); 5340 5341 verifyIndependentOfContext("InvalidRegions[*R] = 0;"); 5342 5343 verifyIndependentOfContext("A<int *> a;"); 5344 verifyIndependentOfContext("A<int **> a;"); 5345 verifyIndependentOfContext("A<int *, int *> a;"); 5346 verifyIndependentOfContext("A<int *[]> a;"); 5347 verifyIndependentOfContext( 5348 "const char *const p = reinterpret_cast<const char *const>(q);"); 5349 verifyIndependentOfContext("A<int **, int **> a;"); 5350 verifyIndependentOfContext("void f(int *a = d * e, int *b = c * d);"); 5351 verifyFormat("for (char **a = b; *a; ++a) {\n}"); 5352 verifyFormat("for (; a && b;) {\n}"); 5353 verifyFormat("bool foo = true && [] { return false; }();"); 5354 5355 verifyFormat( 5356 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 5357 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa, *aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5358 5359 verifyGoogleFormat("**outparam = 1;"); 5360 verifyGoogleFormat("*outparam = a * b;"); 5361 verifyGoogleFormat("int main(int argc, char** argv) {}"); 5362 verifyGoogleFormat("A<int*> a;"); 5363 verifyGoogleFormat("A<int**> a;"); 5364 verifyGoogleFormat("A<int*, int*> a;"); 5365 verifyGoogleFormat("A<int**, int**> a;"); 5366 verifyGoogleFormat("f(b ? *c : *d);"); 5367 verifyGoogleFormat("int a = b ? *c : *d;"); 5368 verifyGoogleFormat("Type* t = **x;"); 5369 verifyGoogleFormat("Type* t = *++*x;"); 5370 verifyGoogleFormat("*++*x;"); 5371 verifyGoogleFormat("Type* t = const_cast<T*>(&*x);"); 5372 verifyGoogleFormat("Type* t = x++ * y;"); 5373 verifyGoogleFormat( 5374 "const char* const p = reinterpret_cast<const char* const>(q);"); 5375 verifyGoogleFormat("void f(int i = 0, SomeType** temps = NULL);"); 5376 verifyGoogleFormat("void f(Bar* a = nullptr, Bar* b);"); 5377 verifyGoogleFormat("template <typename T>\n" 5378 "void f(int i = 0, SomeType** temps = NULL);"); 5379 5380 FormatStyle Left = getLLVMStyle(); 5381 Left.PointerAlignment = FormatStyle::PAS_Left; 5382 verifyFormat("x = *a(x) = *a(y);", Left); 5383 5384 verifyIndependentOfContext("a = *(x + y);"); 5385 verifyIndependentOfContext("a = &(x + y);"); 5386 verifyIndependentOfContext("*(x + y).call();"); 5387 verifyIndependentOfContext("&(x + y)->call();"); 5388 verifyFormat("void f() { &(*I).first; }"); 5389 5390 verifyIndependentOfContext("f(b * /* confusing comment */ ++c);"); 5391 verifyFormat( 5392 "int *MyValues = {\n" 5393 " *A, // Operator detection might be confused by the '{'\n" 5394 " *BB // Operator detection might be confused by previous comment\n" 5395 "};"); 5396 5397 verifyIndependentOfContext("if (int *a = &b)"); 5398 verifyIndependentOfContext("if (int &a = *b)"); 5399 verifyIndependentOfContext("if (a & b[i])"); 5400 verifyIndependentOfContext("if (a::b::c::d & b[i])"); 5401 verifyIndependentOfContext("if (*b[i])"); 5402 verifyIndependentOfContext("if (int *a = (&b))"); 5403 verifyIndependentOfContext("while (int *a = &b)"); 5404 verifyIndependentOfContext("size = sizeof *a;"); 5405 verifyIndependentOfContext("if (a && (b = c))"); 5406 verifyFormat("void f() {\n" 5407 " for (const int &v : Values) {\n" 5408 " }\n" 5409 "}"); 5410 verifyFormat("for (int i = a * a; i < 10; ++i) {\n}"); 5411 verifyFormat("for (int i = 0; i < a * a; ++i) {\n}"); 5412 verifyGoogleFormat("for (int i = 0; i * 2 < z; i *= 2) {\n}"); 5413 5414 verifyFormat("#define A (!a * b)"); 5415 verifyFormat("#define MACRO \\\n" 5416 " int *i = a * b; \\\n" 5417 " void f(a *b);", 5418 getLLVMStyleWithColumns(19)); 5419 5420 verifyIndependentOfContext("A = new SomeType *[Length];"); 5421 verifyIndependentOfContext("A = new SomeType *[Length]();"); 5422 verifyIndependentOfContext("T **t = new T *;"); 5423 verifyIndependentOfContext("T **t = new T *();"); 5424 verifyGoogleFormat("A = new SomeType* [Length]();"); 5425 verifyGoogleFormat("A = new SomeType* [Length];"); 5426 verifyGoogleFormat("T** t = new T*;"); 5427 verifyGoogleFormat("T** t = new T*();"); 5428 5429 FormatStyle PointerLeft = getLLVMStyle(); 5430 PointerLeft.PointerAlignment = FormatStyle::PAS_Left; 5431 verifyFormat("delete *x;", PointerLeft); 5432 verifyFormat("STATIC_ASSERT((a & b) == 0);"); 5433 verifyFormat("STATIC_ASSERT(0 == (a & b));"); 5434 verifyFormat("template <bool a, bool b> " 5435 "typename t::if<x && y>::type f() {}"); 5436 verifyFormat("template <int *y> f() {}"); 5437 verifyFormat("vector<int *> v;"); 5438 verifyFormat("vector<int *const> v;"); 5439 verifyFormat("vector<int *const **const *> v;"); 5440 verifyFormat("vector<int *volatile> v;"); 5441 verifyFormat("vector<a * b> v;"); 5442 verifyFormat("foo<b && false>();"); 5443 verifyFormat("foo<b & 1>();"); 5444 verifyFormat("decltype(*::std::declval<const T &>()) void F();"); 5445 verifyFormat( 5446 "template <class T, class = typename std::enable_if<\n" 5447 " std::is_integral<T>::value &&\n" 5448 " (sizeof(T) > 1 || sizeof(T) < 8)>::type>\n" 5449 "void F();", 5450 getLLVMStyleWithColumns(76)); 5451 verifyFormat( 5452 "template <class T,\n" 5453 " class = typename ::std::enable_if<\n" 5454 " ::std::is_array<T>{} && ::std::is_array<T>{}>::type>\n" 5455 "void F();", 5456 getGoogleStyleWithColumns(68)); 5457 5458 verifyIndependentOfContext("MACRO(int *i);"); 5459 verifyIndependentOfContext("MACRO(auto *a);"); 5460 verifyIndependentOfContext("MACRO(const A *a);"); 5461 verifyIndependentOfContext("MACRO('0' <= c && c <= '9');"); 5462 // FIXME: Is there a way to make this work? 5463 // verifyIndependentOfContext("MACRO(A *a);"); 5464 5465 verifyFormat("DatumHandle const *operator->() const { return input_; }"); 5466 5467 EXPECT_EQ("#define OP(x) \\\n" 5468 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5469 " return s << a.DebugString(); \\\n" 5470 " }", 5471 format("#define OP(x) \\\n" 5472 " ostream &operator<<(ostream &s, const A &a) { \\\n" 5473 " return s << a.DebugString(); \\\n" 5474 " }", 5475 getLLVMStyleWithColumns(50))); 5476 5477 // FIXME: We cannot handle this case yet; we might be able to figure out that 5478 // foo<x> d > v; doesn't make sense. 5479 verifyFormat("foo<a<b && c> d> v;"); 5480 5481 FormatStyle PointerMiddle = getLLVMStyle(); 5482 PointerMiddle.PointerAlignment = FormatStyle::PAS_Middle; 5483 verifyFormat("delete *x;", PointerMiddle); 5484 verifyFormat("int * x;", PointerMiddle); 5485 verifyFormat("template <int * y> f() {}", PointerMiddle); 5486 verifyFormat("int * f(int * a) {}", PointerMiddle); 5487 verifyFormat("int main(int argc, char ** argv) {}", PointerMiddle); 5488 verifyFormat("Test::Test(int b) : a(b * b) {}", PointerMiddle); 5489 verifyFormat("A<int *> a;", PointerMiddle); 5490 verifyFormat("A<int **> a;", PointerMiddle); 5491 verifyFormat("A<int *, int *> a;", PointerMiddle); 5492 verifyFormat("A<int * []> a;", PointerMiddle); 5493 verifyFormat("A = new SomeType * [Length]();", PointerMiddle); 5494 verifyFormat("A = new SomeType * [Length];", PointerMiddle); 5495 verifyFormat("T ** t = new T *;", PointerMiddle); 5496 } 5497 5498 TEST_F(FormatTest, UnderstandsAttributes) { 5499 verifyFormat("SomeType s __attribute__((unused)) (InitValue);"); 5500 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa __attribute__((unused))\n" 5501 "aaaaaaaaaaaaaaaaaaaaaaa(int i);"); 5502 } 5503 5504 TEST_F(FormatTest, UnderstandsEllipsis) { 5505 verifyFormat("int printf(const char *fmt, ...);"); 5506 verifyFormat("template <class... Ts> void Foo(Ts... ts) { Foo(ts...); }"); 5507 verifyFormat("template <class... Ts> void Foo(Ts *... ts) {}"); 5508 5509 FormatStyle PointersLeft = getLLVMStyle(); 5510 PointersLeft.PointerAlignment = FormatStyle::PAS_Left; 5511 verifyFormat("template <class... Ts> void Foo(Ts*... ts) {}", PointersLeft); 5512 } 5513 5514 TEST_F(FormatTest, AdaptivelyFormatsPointersAndReferences) { 5515 EXPECT_EQ("int *a;\n" 5516 "int *a;\n" 5517 "int *a;", 5518 format("int *a;\n" 5519 "int* a;\n" 5520 "int *a;", 5521 getGoogleStyle())); 5522 EXPECT_EQ("int* a;\n" 5523 "int* a;\n" 5524 "int* a;", 5525 format("int* a;\n" 5526 "int* a;\n" 5527 "int *a;", 5528 getGoogleStyle())); 5529 EXPECT_EQ("int *a;\n" 5530 "int *a;\n" 5531 "int *a;", 5532 format("int *a;\n" 5533 "int * a;\n" 5534 "int * a;", 5535 getGoogleStyle())); 5536 } 5537 5538 TEST_F(FormatTest, UnderstandsRvalueReferences) { 5539 verifyFormat("int f(int &&a) {}"); 5540 verifyFormat("int f(int a, char &&b) {}"); 5541 verifyFormat("void f() { int &&a = b; }"); 5542 verifyGoogleFormat("int f(int a, char&& b) {}"); 5543 verifyGoogleFormat("void f() { int&& a = b; }"); 5544 5545 verifyIndependentOfContext("A<int &&> a;"); 5546 verifyIndependentOfContext("A<int &&, int &&> a;"); 5547 verifyGoogleFormat("A<int&&> a;"); 5548 verifyGoogleFormat("A<int&&, int&&> a;"); 5549 5550 // Not rvalue references: 5551 verifyFormat("template <bool B, bool C> class A {\n" 5552 " static_assert(B && C, \"Something is wrong\");\n" 5553 "};"); 5554 verifyGoogleFormat("#define IF(a, b, c) if (a && (b == c))"); 5555 verifyGoogleFormat("#define WHILE(a, b, c) while (a && (b == c))"); 5556 verifyFormat("#define A(a, b) (a && b)"); 5557 } 5558 5559 TEST_F(FormatTest, FormatsBinaryOperatorsPrecedingEquals) { 5560 verifyFormat("void f() {\n" 5561 " x[aaaaaaaaa -\n" 5562 " b] = 23;\n" 5563 "}", 5564 getLLVMStyleWithColumns(15)); 5565 } 5566 5567 TEST_F(FormatTest, FormatsCasts) { 5568 verifyFormat("Type *A = static_cast<Type *>(P);"); 5569 verifyFormat("Type *A = (Type *)P;"); 5570 verifyFormat("Type *A = (vector<Type *, int *>)P;"); 5571 verifyFormat("int a = (int)(2.0f);"); 5572 verifyFormat("int a = (int)2.0f;"); 5573 verifyFormat("x[(int32)y];"); 5574 verifyFormat("x = (int32)y;"); 5575 verifyFormat("#define AA(X) sizeof(((X *)NULL)->a)"); 5576 verifyFormat("int a = (int)*b;"); 5577 verifyFormat("int a = (int)2.0f;"); 5578 verifyFormat("int a = (int)~0;"); 5579 verifyFormat("int a = (int)++a;"); 5580 verifyFormat("int a = (int)sizeof(int);"); 5581 verifyFormat("int a = (int)+2;"); 5582 verifyFormat("my_int a = (my_int)2.0f;"); 5583 verifyFormat("my_int a = (my_int)sizeof(int);"); 5584 verifyFormat("return (my_int)aaa;"); 5585 verifyFormat("#define x ((int)-1)"); 5586 verifyFormat("#define LENGTH(x, y) (x) - (y) + 1"); 5587 verifyFormat("#define p(q) ((int *)&q)"); 5588 verifyFormat("fn(a)(b) + 1;"); 5589 5590 verifyFormat("void f() { my_int a = (my_int)*b; }"); 5591 verifyFormat("void f() { return P ? (my_int)*P : (my_int)0; }"); 5592 verifyFormat("my_int a = (my_int)~0;"); 5593 verifyFormat("my_int a = (my_int)++a;"); 5594 verifyFormat("my_int a = (my_int)-2;"); 5595 verifyFormat("my_int a = (my_int)1;"); 5596 verifyFormat("my_int a = (my_int *)1;"); 5597 verifyFormat("my_int a = (const my_int)-1;"); 5598 verifyFormat("my_int a = (const my_int *)-1;"); 5599 verifyFormat("my_int a = (my_int)(my_int)-1;"); 5600 5601 // FIXME: single value wrapped with paren will be treated as cast. 5602 verifyFormat("void f(int i = (kValue)*kMask) {}"); 5603 5604 verifyFormat("{ (void)F; }"); 5605 5606 // Don't break after a cast's 5607 verifyFormat("int aaaaaaaaaaaaaaaaaaaaaaaaaaa =\n" 5608 " (aaaaaaaaaaaaaaaaaaaaaaaaaa *)(aaaaaaaaaaaaaaaaaaaaaa +\n" 5609 " bbbbbbbbbbbbbbbbbbbbbb);"); 5610 5611 // These are not casts. 5612 verifyFormat("void f(int *) {}"); 5613 verifyFormat("f(foo)->b;"); 5614 verifyFormat("f(foo).b;"); 5615 verifyFormat("f(foo)(b);"); 5616 verifyFormat("f(foo)[b];"); 5617 verifyFormat("[](foo) { return 4; }(bar);"); 5618 verifyFormat("(*funptr)(foo)[4];"); 5619 verifyFormat("funptrs[4](foo)[4];"); 5620 verifyFormat("void f(int *);"); 5621 verifyFormat("void f(int *) = 0;"); 5622 verifyFormat("void f(SmallVector<int>) {}"); 5623 verifyFormat("void f(SmallVector<int>);"); 5624 verifyFormat("void f(SmallVector<int>) = 0;"); 5625 verifyFormat("void f(int i = (kA * kB) & kMask) {}"); 5626 verifyFormat("int a = sizeof(int) * b;"); 5627 verifyFormat("int a = alignof(int) * b;", getGoogleStyle()); 5628 verifyFormat("template <> void f<int>(int i) SOME_ANNOTATION;"); 5629 verifyFormat("f(\"%\" SOME_MACRO(ll) \"d\");"); 5630 verifyFormat("aaaaa &operator=(const aaaaa &) LLVM_DELETED_FUNCTION;"); 5631 5632 // These are not casts, but at some point were confused with casts. 5633 verifyFormat("virtual void foo(int *) override;"); 5634 verifyFormat("virtual void foo(char &) const;"); 5635 verifyFormat("virtual void foo(int *a, char *) const;"); 5636 verifyFormat("int a = sizeof(int *) + b;"); 5637 verifyFormat("int a = alignof(int *) + b;", getGoogleStyle()); 5638 5639 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa *foo = (aaaaaaaaaaaaaaaaa *)\n" 5640 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb;"); 5641 // FIXME: The indentation here is not ideal. 5642 verifyFormat( 5643 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5644 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = (*cccccccccccccccc)\n" 5645 " [dddddddddddddddddddddddddddddddddddddddddddddddddddddddd];"); 5646 } 5647 5648 TEST_F(FormatTest, FormatsFunctionTypes) { 5649 verifyFormat("A<bool()> a;"); 5650 verifyFormat("A<SomeType()> a;"); 5651 verifyFormat("A<void (*)(int, std::string)> a;"); 5652 verifyFormat("A<void *(int)>;"); 5653 verifyFormat("void *(*a)(int *, SomeType *);"); 5654 verifyFormat("int (*func)(void *);"); 5655 verifyFormat("void f() { int (*func)(void *); }"); 5656 verifyFormat("template <class CallbackClass>\n" 5657 "using MyCallback = void (CallbackClass::*)(SomeObject *Data);"); 5658 5659 verifyGoogleFormat("A<void*(int*, SomeType*)>;"); 5660 verifyGoogleFormat("void* (*a)(int);"); 5661 verifyGoogleFormat( 5662 "template <class CallbackClass>\n" 5663 "using MyCallback = void (CallbackClass::*)(SomeObject* Data);"); 5664 5665 // Other constructs can look somewhat like function types: 5666 verifyFormat("A<sizeof(*x)> a;"); 5667 verifyFormat("#define DEREF_AND_CALL_F(x) f(*x)"); 5668 verifyFormat("some_var = function(*some_pointer_var)[0];"); 5669 verifyFormat("void f() { function(*some_pointer_var)[0] = 10; }"); 5670 } 5671 5672 TEST_F(FormatTest, FormatsPointersToArrayTypes) { 5673 verifyFormat("A (*foo_)[6];"); 5674 verifyFormat("vector<int> (*foo_)[6];"); 5675 } 5676 5677 TEST_F(FormatTest, BreaksLongVariableDeclarations) { 5678 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5679 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 5680 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType const\n" 5681 " LoooooooooooooooooooooooooooooooooooooooongVariable;"); 5682 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5683 " *LoooooooooooooooooooooooooooooooooooooooongVariable;"); 5684 5685 // Different ways of ()-initializiation. 5686 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5687 " LoooooooooooooooooooooooooooooooooooooooongVariable(1);"); 5688 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5689 " LoooooooooooooooooooooooooooooooooooooooongVariable(a);"); 5690 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType\n" 5691 " LoooooooooooooooooooooooooooooooooooooooongVariable({});"); 5692 } 5693 5694 TEST_F(FormatTest, BreaksLongDeclarations) { 5695 verifyFormat("typedef LoooooooooooooooooooooooooooooooooooooooongType\n" 5696 " AnotherNameForTheLongType;"); 5697 verifyFormat("typedef LongTemplateType<aaaaaaaaaaaaaaaaaaa()>\n" 5698 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 5699 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5700 "LoooooooooooooooooooooooooooooooongFunctionDeclaration();"); 5701 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType *\n" 5702 "LoooooooooooooooooooooooooooooooongFunctionDeclaration();"); 5703 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5704 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5705 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType MACRO\n" 5706 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5707 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 5708 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5709 verifyFormat("decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 5710 "LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}"); 5711 FormatStyle Indented = getLLVMStyle(); 5712 Indented.IndentWrappedFunctionNames = true; 5713 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5714 " LoooooooooooooooooooooooooooooooongFunctionDeclaration();", 5715 Indented); 5716 verifyFormat( 5717 "LoooooooooooooooooooooooooooooooooooooooongReturnType\n" 5718 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5719 Indented); 5720 verifyFormat( 5721 "LoooooooooooooooooooooooooooooooooooooooongReturnType const\n" 5722 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5723 Indented); 5724 verifyFormat( 5725 "decltype(LoooooooooooooooooooooooooooooooooooooooongName)\n" 5726 " LooooooooooooooooooooooooooooooooooongFunctionDefinition() {}", 5727 Indented); 5728 5729 // FIXME: Without the comment, this breaks after "(". 5730 verifyFormat("LoooooooooooooooooooooooooooooooooooooooongType // break\n" 5731 " (*LoooooooooooooooooooooooooooongFunctionTypeVarialbe)();", 5732 getGoogleStyle()); 5733 5734 verifyFormat("int *someFunction(int LoooooooooooooooooooongParam1,\n" 5735 " int LoooooooooooooooooooongParam2) {}"); 5736 verifyFormat( 5737 "TypeSpecDecl *TypeSpecDecl::Create(ASTContext &C, DeclContext *DC,\n" 5738 " SourceLocation L, IdentifierIn *II,\n" 5739 " Type *T) {}"); 5740 verifyFormat("ReallyLongReturnType<TemplateParam1, TemplateParam2>\n" 5741 "ReallyReaaallyLongFunctionName(\n" 5742 " const std::string &SomeParameter,\n" 5743 " const SomeType<string, SomeOtherTemplateParameter>\n" 5744 " &ReallyReallyLongParameterName,\n" 5745 " const SomeType<string, SomeOtherTemplateParameter>\n" 5746 " &AnotherLongParameterName) {}"); 5747 verifyFormat("template <typename A>\n" 5748 "SomeLoooooooooooooooooooooongType<\n" 5749 " typename some_namespace::SomeOtherType<A>::Type>\n" 5750 "Function() {}"); 5751 5752 verifyGoogleFormat( 5753 "aaaaaaaaaaaaaaaa::aaaaaaaaaaaaaaaa<aaaaaaaaaaaaa, aaaaaaaaaaaa>\n" 5754 " aaaaaaaaaaaaaaaaaaaaaaa;"); 5755 verifyGoogleFormat( 5756 "TypeSpecDecl* TypeSpecDecl::Create(ASTContext& C, DeclContext* DC,\n" 5757 " SourceLocation L) {}"); 5758 verifyGoogleFormat( 5759 "some_namespace::LongReturnType\n" 5760 "long_namespace::SomeVeryLongClass::SomeVeryLongFunction(\n" 5761 " int first_long_parameter, int second_parameter) {}"); 5762 5763 verifyGoogleFormat("template <typename T>\n" 5764 "aaaaaaaa::aaaaa::aaaaaa<T, aaaaaaaaaaaaaaaaaaaaaaaaa>\n" 5765 "aaaaaaaaaaaaaaaaaaaaaaaa<T>::aaaaaaa() {}"); 5766 verifyGoogleFormat("A<A<A>> aaaaaaaaaa(int aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5767 " int aaaaaaaaaaaaaaaaaaaaaaa);"); 5768 5769 verifyFormat("typedef size_t (*aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)(\n" 5770 " const aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5771 " *aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5772 } 5773 5774 TEST_F(FormatTest, FormatsArrays) { 5775 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5776 " [bbbbbbbbbbbbbbbbbbbbbbbbb] = c;"); 5777 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5778 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 5779 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5780 " [a][bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = cccccccc;"); 5781 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n" 5782 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5783 " [bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb] = ccccccccccc;"); 5784 verifyFormat( 5785 "llvm::outs() << \"aaaaaaaaaaaa: \"\n" 5786 " << (*aaaaaaaiaaaaaaa)[aaaaaaaaaaaaaaaaaaaaaaaaa]\n" 5787 " [aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa];"); 5788 5789 verifyGoogleFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<int>\n" 5790 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa[aaaaaaaaaaaa];"); 5791 verifyFormat( 5792 "aaaaaaaaaaa aaaaaaaaaaaaaaa = aaaaaaaaaaaaaaaaaaaaaaaaaa->aaaaaaaaa[0]\n" 5793 " .aaaaaaa[0]\n" 5794 " .aaaaaaaaaaaaaaaaaaaaaa();"); 5795 5796 verifyNoCrash("a[,Y?)]", getLLVMStyleWithColumns(10)); 5797 } 5798 5799 TEST_F(FormatTest, LineStartsWithSpecialCharacter) { 5800 verifyFormat("(a)->b();"); 5801 verifyFormat("--a;"); 5802 } 5803 5804 TEST_F(FormatTest, HandlesIncludeDirectives) { 5805 verifyFormat("#include <string>\n" 5806 "#include <a/b/c.h>\n" 5807 "#include \"a/b/string\"\n" 5808 "#include \"string.h\"\n" 5809 "#include \"string.h\"\n" 5810 "#include <a-a>\n" 5811 "#include < path with space >\n" 5812 "#include \"abc.h\" // this is included for ABC\n" 5813 "#include \"some long include\" // with a comment\n" 5814 "#include \"some very long include paaaaaaaaaaaaaaaaaaaaaaath\"", 5815 getLLVMStyleWithColumns(35)); 5816 EXPECT_EQ("#include \"a.h\"", format("#include \"a.h\"")); 5817 EXPECT_EQ("#include <a>", format("#include<a>")); 5818 5819 verifyFormat("#import <string>"); 5820 verifyFormat("#import <a/b/c.h>"); 5821 verifyFormat("#import \"a/b/string\""); 5822 verifyFormat("#import \"string.h\""); 5823 verifyFormat("#import \"string.h\""); 5824 verifyFormat("#if __has_include(<strstream>)\n" 5825 "#include <strstream>\n" 5826 "#endif"); 5827 5828 verifyFormat("#define MY_IMPORT <a/b>"); 5829 5830 // Protocol buffer definition or missing "#". 5831 verifyFormat("import \"aaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaa\";", 5832 getLLVMStyleWithColumns(30)); 5833 5834 FormatStyle Style = getLLVMStyle(); 5835 Style.AlwaysBreakBeforeMultilineStrings = true; 5836 Style.ColumnLimit = 0; 5837 verifyFormat("#import \"abc.h\"", Style); 5838 5839 // But 'import' might also be a regular C++ namespace. 5840 verifyFormat("import::SomeFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 5841 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 5842 } 5843 5844 //===----------------------------------------------------------------------===// 5845 // Error recovery tests. 5846 //===----------------------------------------------------------------------===// 5847 5848 TEST_F(FormatTest, IncompleteParameterLists) { 5849 FormatStyle NoBinPacking = getLLVMStyle(); 5850 NoBinPacking.BinPackParameters = false; 5851 verifyFormat("void aaaaaaaaaaaaaaaaaa(int level,\n" 5852 " double *min_x,\n" 5853 " double *max_x,\n" 5854 " double *min_y,\n" 5855 " double *max_y,\n" 5856 " double *min_z,\n" 5857 " double *max_z, ) {}", 5858 NoBinPacking); 5859 } 5860 5861 TEST_F(FormatTest, IncorrectCodeTrailingStuff) { 5862 verifyFormat("void f() { return; }\n42"); 5863 verifyFormat("void f() {\n" 5864 " if (0)\n" 5865 " return;\n" 5866 "}\n" 5867 "42"); 5868 verifyFormat("void f() { return }\n42"); 5869 verifyFormat("void f() {\n" 5870 " if (0)\n" 5871 " return\n" 5872 "}\n" 5873 "42"); 5874 } 5875 5876 TEST_F(FormatTest, IncorrectCodeMissingSemicolon) { 5877 EXPECT_EQ("void f() { return }", format("void f ( ) { return }")); 5878 EXPECT_EQ("void f() {\n" 5879 " if (a)\n" 5880 " return\n" 5881 "}", 5882 format("void f ( ) { if ( a ) return }")); 5883 EXPECT_EQ("namespace N {\n" 5884 "void f()\n" 5885 "}", 5886 format("namespace N { void f() }")); 5887 EXPECT_EQ("namespace N {\n" 5888 "void f() {}\n" 5889 "void g()\n" 5890 "}", 5891 format("namespace N { void f( ) { } void g( ) }")); 5892 } 5893 5894 TEST_F(FormatTest, IndentationWithinColumnLimitNotPossible) { 5895 verifyFormat("int aaaaaaaa =\n" 5896 " // Overlylongcomment\n" 5897 " b;", 5898 getLLVMStyleWithColumns(20)); 5899 verifyFormat("function(\n" 5900 " ShortArgument,\n" 5901 " LoooooooooooongArgument);\n", 5902 getLLVMStyleWithColumns(20)); 5903 } 5904 5905 TEST_F(FormatTest, IncorrectAccessSpecifier) { 5906 verifyFormat("public:"); 5907 verifyFormat("class A {\n" 5908 "public\n" 5909 " void f() {}\n" 5910 "};"); 5911 verifyFormat("public\n" 5912 "int qwerty;"); 5913 verifyFormat("public\n" 5914 "B {}"); 5915 verifyFormat("public\n" 5916 "{}"); 5917 verifyFormat("public\n" 5918 "B { int x; }"); 5919 } 5920 5921 TEST_F(FormatTest, IncorrectCodeUnbalancedBraces) { 5922 verifyFormat("{"); 5923 verifyFormat("#})"); 5924 verifyNoCrash("(/**/[:!] ?[)."); 5925 } 5926 5927 TEST_F(FormatTest, IncorrectCodeDoNoWhile) { 5928 verifyFormat("do {\n}"); 5929 verifyFormat("do {\n}\n" 5930 "f();"); 5931 verifyFormat("do {\n}\n" 5932 "wheeee(fun);"); 5933 verifyFormat("do {\n" 5934 " f();\n" 5935 "}"); 5936 } 5937 5938 TEST_F(FormatTest, IncorrectCodeMissingParens) { 5939 verifyFormat("if {\n foo;\n foo();\n}"); 5940 verifyFormat("switch {\n foo;\n foo();\n}"); 5941 verifyFormat("for {\n foo;\n foo();\n}"); 5942 verifyFormat("while {\n foo;\n foo();\n}"); 5943 verifyFormat("do {\n foo;\n foo();\n} while;"); 5944 } 5945 5946 TEST_F(FormatTest, DoesNotTouchUnwrappedLinesWithErrors) { 5947 verifyFormat("namespace {\n" 5948 "class Foo { Foo (\n" 5949 "};\n" 5950 "} // comment"); 5951 } 5952 5953 TEST_F(FormatTest, IncorrectCodeErrorDetection) { 5954 EXPECT_EQ("{\n {}\n", format("{\n{\n}\n")); 5955 EXPECT_EQ("{\n {}\n", format("{\n {\n}\n")); 5956 EXPECT_EQ("{\n {}\n", format("{\n {\n }\n")); 5957 EXPECT_EQ("{\n {}\n}\n}\n", format("{\n {\n }\n }\n}\n")); 5958 5959 EXPECT_EQ("{\n" 5960 " {\n" 5961 " breakme(\n" 5962 " qwe);\n" 5963 " }\n", 5964 format("{\n" 5965 " {\n" 5966 " breakme(qwe);\n" 5967 "}\n", 5968 getLLVMStyleWithColumns(10))); 5969 } 5970 5971 TEST_F(FormatTest, LayoutCallsInsideBraceInitializers) { 5972 verifyFormat("int x = {\n" 5973 " avariable,\n" 5974 " b(alongervariable)};", 5975 getLLVMStyleWithColumns(25)); 5976 } 5977 5978 TEST_F(FormatTest, LayoutBraceInitializersInReturnStatement) { 5979 verifyFormat("return (a)(b){1, 2, 3};"); 5980 } 5981 5982 TEST_F(FormatTest, LayoutCxx11BraceInitializers) { 5983 verifyFormat("vector<int> x{1, 2, 3, 4};"); 5984 verifyFormat("vector<int> x{\n" 5985 " 1, 2, 3, 4,\n" 5986 "};"); 5987 verifyFormat("vector<T> x{{}, {}, {}, {}};"); 5988 verifyFormat("f({1, 2});"); 5989 verifyFormat("auto v = Foo{-1};"); 5990 verifyFormat("f({1, 2}, {{2, 3}, {4, 5}}, c, {d});"); 5991 verifyFormat("Class::Class : member{1, 2, 3} {}"); 5992 verifyFormat("new vector<int>{1, 2, 3};"); 5993 verifyFormat("new int[3]{1, 2, 3};"); 5994 verifyFormat("new int{1};"); 5995 verifyFormat("return {arg1, arg2};"); 5996 verifyFormat("return {arg1, SomeType{parameter}};"); 5997 verifyFormat("int count = set<int>{f(), g(), h()}.size();"); 5998 verifyFormat("new T{arg1, arg2};"); 5999 verifyFormat("f(MyMap[{composite, key}]);"); 6000 verifyFormat("class Class {\n" 6001 " T member = {arg1, arg2};\n" 6002 "};"); 6003 verifyFormat("vector<int> foo = {::SomeGlobalFunction()};"); 6004 verifyFormat("static_assert(std::is_integral<int>{} + 0, \"\");"); 6005 verifyFormat("int a = std::is_integral<int>{} + 0;"); 6006 6007 verifyFormat("int foo(int i) { return fo1{}(i); }"); 6008 verifyFormat("int foo(int i) { return fo1{}(i); }"); 6009 verifyFormat("auto i = decltype(x){};"); 6010 verifyFormat("std::vector<int> v = {1, 0 /* comment */};"); 6011 verifyFormat("Node n{1, Node{1000}, //\n" 6012 " 2};"); 6013 verifyFormat("Aaaa aaaaaaa{\n" 6014 " {\n" 6015 " aaaa,\n" 6016 " },\n" 6017 "};"); 6018 6019 // In combination with BinPackParameters = false. 6020 FormatStyle NoBinPacking = getLLVMStyle(); 6021 NoBinPacking.BinPackParameters = false; 6022 verifyFormat("const Aaaaaa aaaaa = {aaaaa,\n" 6023 " bbbbb,\n" 6024 " ccccc,\n" 6025 " ddddd,\n" 6026 " eeeee,\n" 6027 " ffffff,\n" 6028 " ggggg,\n" 6029 " hhhhhh,\n" 6030 " iiiiii,\n" 6031 " jjjjjj,\n" 6032 " kkkkkk};", 6033 NoBinPacking); 6034 verifyFormat("const Aaaaaa aaaaa = {\n" 6035 " aaaaa,\n" 6036 " bbbbb,\n" 6037 " ccccc,\n" 6038 " ddddd,\n" 6039 " eeeee,\n" 6040 " ffffff,\n" 6041 " ggggg,\n" 6042 " hhhhhh,\n" 6043 " iiiiii,\n" 6044 " jjjjjj,\n" 6045 " kkkkkk,\n" 6046 "};", 6047 NoBinPacking); 6048 verifyFormat( 6049 "const Aaaaaa aaaaa = {\n" 6050 " aaaaa, bbbbb, ccccc, ddddd, eeeee, ffffff, ggggg, hhhhhh,\n" 6051 " iiiiii, jjjjjj, kkkkkk, aaaaa, bbbbb, ccccc, ddddd, eeeee,\n" 6052 " ffffff, ggggg, hhhhhh, iiiiii, jjjjjj, kkkkkk,\n" 6053 "};", 6054 NoBinPacking); 6055 6056 // FIXME: The alignment of these trailing comments might be bad. Then again, 6057 // this might be utterly useless in real code. 6058 verifyFormat("Constructor::Constructor()\n" 6059 " : some_value{ //\n" 6060 " aaaaaaa, //\n" 6061 " bbbbbbb} {}"); 6062 6063 // In braced lists, the first comment is always assumed to belong to the 6064 // first element. Thus, it can be moved to the next or previous line as 6065 // appropriate. 6066 EXPECT_EQ("function({// First element:\n" 6067 " 1,\n" 6068 " // Second element:\n" 6069 " 2});", 6070 format("function({\n" 6071 " // First element:\n" 6072 " 1,\n" 6073 " // Second element:\n" 6074 " 2});")); 6075 EXPECT_EQ("std::vector<int> MyNumbers{\n" 6076 " // First element:\n" 6077 " 1,\n" 6078 " // Second element:\n" 6079 " 2};", 6080 format("std::vector<int> MyNumbers{// First element:\n" 6081 " 1,\n" 6082 " // Second element:\n" 6083 " 2};", 6084 getLLVMStyleWithColumns(30))); 6085 // A trailing comma should still lead to an enforced line break. 6086 EXPECT_EQ("vector<int> SomeVector = {\n" 6087 " // aaa\n" 6088 " 1, 2,\n" 6089 "};", 6090 format("vector<int> SomeVector = { // aaa\n" 6091 " 1, 2, };")); 6092 6093 FormatStyle ExtraSpaces = getLLVMStyle(); 6094 ExtraSpaces.Cpp11BracedListStyle = false; 6095 ExtraSpaces.ColumnLimit = 75; 6096 verifyFormat("vector<int> x{ 1, 2, 3, 4 };", ExtraSpaces); 6097 verifyFormat("vector<T> x{ {}, {}, {}, {} };", ExtraSpaces); 6098 verifyFormat("f({ 1, 2 });", ExtraSpaces); 6099 verifyFormat("auto v = Foo{ 1 };", ExtraSpaces); 6100 verifyFormat("f({ 1, 2 }, { { 2, 3 }, { 4, 5 } }, c, { d });", ExtraSpaces); 6101 verifyFormat("Class::Class : member{ 1, 2, 3 } {}", ExtraSpaces); 6102 verifyFormat("new vector<int>{ 1, 2, 3 };", ExtraSpaces); 6103 verifyFormat("new int[3]{ 1, 2, 3 };", ExtraSpaces); 6104 verifyFormat("return { arg1, arg2 };", ExtraSpaces); 6105 verifyFormat("return { arg1, SomeType{ parameter } };", ExtraSpaces); 6106 verifyFormat("int count = set<int>{ f(), g(), h() }.size();", ExtraSpaces); 6107 verifyFormat("new T{ arg1, arg2 };", ExtraSpaces); 6108 verifyFormat("f(MyMap[{ composite, key }]);", ExtraSpaces); 6109 verifyFormat("class Class {\n" 6110 " T member = { arg1, arg2 };\n" 6111 "};", 6112 ExtraSpaces); 6113 verifyFormat( 6114 "foo = aaaaaaaaaaa ? vector<int>{ aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6115 " aaaaaaaaaaaaaaaaaaaa, aaaaa }\n" 6116 " : vector<int>{ bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 6117 " bbbbbbbbbbbbbbbbbbbb, bbbbb };", 6118 ExtraSpaces); 6119 verifyFormat("DoSomethingWithVector({} /* No data */);", ExtraSpaces); 6120 verifyFormat("DoSomethingWithVector({ {} /* No data */ }, { { 1, 2 } });", 6121 ExtraSpaces); 6122 verifyFormat( 6123 "someFunction(OtherParam,\n" 6124 " BracedList{ // comment 1 (Forcing interesting break)\n" 6125 " param1, param2,\n" 6126 " // comment 2\n" 6127 " param3, param4 });", 6128 ExtraSpaces); 6129 verifyFormat( 6130 "std::this_thread::sleep_for(\n" 6131 " std::chrono::nanoseconds{ std::chrono::seconds{ 1 } } / 5);", 6132 ExtraSpaces); 6133 verifyFormat( 6134 "std::vector<MyValues> aaaaaaaaaaaaaaaaaaa{\n" 6135 " aaaaaaa, aaaaaaaaaa, aaaaa, aaaaaaaaaaaaaaa, aaa, aaaaaaaaaa, a,\n" 6136 " aaaaaaaaaaaaaaaaaaaaa, aaaaaaaaaaaa,\n" 6137 " aaaaaaaaaaaaaaaaaaa + aaaaaaaaaaaaaaaaaaa, aaaaaaa, a};"); 6138 verifyFormat("vector<int> foo = { ::SomeGlobalFunction() };", ExtraSpaces); 6139 } 6140 6141 TEST_F(FormatTest, FormatsBracedListsInColumnLayout) { 6142 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6143 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6144 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6145 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6146 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6147 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 6148 verifyFormat("vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6149 " // line comment\n" 6150 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6151 " 1, 22, 333, 4444, 55555,\n" 6152 " // line comment\n" 6153 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6154 " 1, 22, 333, 4444, 55555, 666666, 7777777};"); 6155 verifyFormat( 6156 "vector<int> x = {1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6157 " 1, 22, 333, 4444, 55555, 666666, 7777777,\n" 6158 " 1, 22, 333, 4444, 55555, 666666, // comment\n" 6159 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6160 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6161 " 7777777, 1, 22, 333, 4444, 55555, 666666,\n" 6162 " 7777777};"); 6163 verifyFormat("static const uint16_t CallerSavedRegs64Bittttt[] = {\n" 6164 " X86::RAX, X86::RDX, X86::RCX, X86::RSI, X86::RDI,\n" 6165 " X86::R8, X86::R9, X86::R10, X86::R11, 0};"); 6166 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6167 " 1, 1, 1, 1};", 6168 getLLVMStyleWithColumns(39)); 6169 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6170 " 1, 1, 1, 1};", 6171 getLLVMStyleWithColumns(38)); 6172 verifyFormat("vector<int> aaaaaaaaaaaaaaaaaaaaaa = {\n" 6173 " 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};", 6174 getLLVMStyleWithColumns(43)); 6175 6176 // Trailing commas. 6177 verifyFormat("vector<int> x = {\n" 6178 " 1, 1, 1, 1, 1, 1, 1, 1,\n" 6179 "};", 6180 getLLVMStyleWithColumns(39)); 6181 verifyFormat("vector<int> x = {\n" 6182 " 1, 1, 1, 1, 1, 1, 1, 1, //\n" 6183 "};", 6184 getLLVMStyleWithColumns(39)); 6185 verifyFormat("vector<int> x = {1, 1, 1, 1,\n" 6186 " 1, 1, 1, 1,\n" 6187 " /**/ /**/};", 6188 getLLVMStyleWithColumns(39)); 6189 verifyFormat("return {{aaaaaaaaaaaaaaaaaaaaa},\n" 6190 " {aaaaaaaaaaaaaaaaaaa},\n" 6191 " {aaaaaaaaaaaaaaaaaaaaa},\n" 6192 " {aaaaaaaaaaaaaaaaa}};", 6193 getLLVMStyleWithColumns(60)); 6194 6195 // With nested lists, we should either format one item per line or all nested 6196 // lists one one line. 6197 // FIXME: For some nested lists, we can do better. 6198 verifyFormat( 6199 "SomeStruct my_struct_array = {\n" 6200 " {aaaaaa, aaaaaaaa, aaaaaaaaaa, aaaaaaaaa, aaaaaaaaa, aaaaaaaaaa,\n" 6201 " aaaaaaaaaaaaa, aaaaaaa, aaa},\n" 6202 " {aaa, aaa},\n" 6203 " {aaa, aaa},\n" 6204 " {aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaaa, aaa},\n" 6205 " {aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaa,\n" 6206 " aaaaaaaaaaaa, a, aaaaaaaaaa, aaaaaaaaa, aaa}};"); 6207 6208 // No column layout should be used here. 6209 verifyFormat("aaaaaaaaaaaaaaa = {aaaaaaaaaaaaaaaaaaaaaaaaaaa, 0, 0,\n" 6210 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb};"); 6211 6212 verifyNoCrash("a<,"); 6213 } 6214 6215 TEST_F(FormatTest, PullTrivialFunctionDefinitionsIntoSingleLine) { 6216 FormatStyle DoNotMerge = getLLVMStyle(); 6217 DoNotMerge.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 6218 6219 verifyFormat("void f() { return 42; }"); 6220 verifyFormat("void f() {\n" 6221 " return 42;\n" 6222 "}", 6223 DoNotMerge); 6224 verifyFormat("void f() {\n" 6225 " // Comment\n" 6226 "}"); 6227 verifyFormat("{\n" 6228 "#error {\n" 6229 " int a;\n" 6230 "}"); 6231 verifyFormat("{\n" 6232 " int a;\n" 6233 "#error {\n" 6234 "}"); 6235 verifyFormat("void f() {} // comment"); 6236 verifyFormat("void f() { int a; } // comment"); 6237 verifyFormat("void f() {\n" 6238 "} // comment", 6239 DoNotMerge); 6240 verifyFormat("void f() {\n" 6241 " int a;\n" 6242 "} // comment", 6243 DoNotMerge); 6244 verifyFormat("void f() {\n" 6245 "} // comment", 6246 getLLVMStyleWithColumns(15)); 6247 6248 verifyFormat("void f() { return 42; }", getLLVMStyleWithColumns(23)); 6249 verifyFormat("void f() {\n return 42;\n}", getLLVMStyleWithColumns(22)); 6250 6251 verifyFormat("void f() {}", getLLVMStyleWithColumns(11)); 6252 verifyFormat("void f() {\n}", getLLVMStyleWithColumns(10)); 6253 verifyFormat("class C {\n" 6254 " C()\n" 6255 " : iiiiiiii(nullptr),\n" 6256 " kkkkkkk(nullptr),\n" 6257 " mmmmmmm(nullptr),\n" 6258 " nnnnnnn(nullptr) {}\n" 6259 "};", 6260 getGoogleStyle()); 6261 6262 FormatStyle NoColumnLimit = getLLVMStyle(); 6263 NoColumnLimit.ColumnLimit = 0; 6264 EXPECT_EQ("A() : b(0) {}", format("A():b(0){}", NoColumnLimit)); 6265 EXPECT_EQ("class C {\n" 6266 " A() : b(0) {}\n" 6267 "};", format("class C{A():b(0){}};", NoColumnLimit)); 6268 EXPECT_EQ("A()\n" 6269 " : b(0) {\n" 6270 "}", 6271 format("A()\n:b(0)\n{\n}", NoColumnLimit)); 6272 6273 FormatStyle DoNotMergeNoColumnLimit = NoColumnLimit; 6274 DoNotMergeNoColumnLimit.AllowShortFunctionsOnASingleLine = 6275 FormatStyle::SFS_None; 6276 EXPECT_EQ("A()\n" 6277 " : b(0) {\n" 6278 "}", 6279 format("A():b(0){}", DoNotMergeNoColumnLimit)); 6280 EXPECT_EQ("A()\n" 6281 " : b(0) {\n" 6282 "}", 6283 format("A()\n:b(0)\n{\n}", DoNotMergeNoColumnLimit)); 6284 6285 verifyFormat("#define A \\\n" 6286 " void f() { \\\n" 6287 " int i; \\\n" 6288 " }", 6289 getLLVMStyleWithColumns(20)); 6290 verifyFormat("#define A \\\n" 6291 " void f() { int i; }", 6292 getLLVMStyleWithColumns(21)); 6293 verifyFormat("#define A \\\n" 6294 " void f() { \\\n" 6295 " int i; \\\n" 6296 " } \\\n" 6297 " int j;", 6298 getLLVMStyleWithColumns(22)); 6299 verifyFormat("#define A \\\n" 6300 " void f() { int i; } \\\n" 6301 " int j;", 6302 getLLVMStyleWithColumns(23)); 6303 } 6304 6305 TEST_F(FormatTest, PullInlineFunctionDefinitionsIntoSingleLine) { 6306 FormatStyle MergeInlineOnly = getLLVMStyle(); 6307 MergeInlineOnly.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 6308 verifyFormat("class C {\n" 6309 " int f() { return 42; }\n" 6310 "};", 6311 MergeInlineOnly); 6312 verifyFormat("int f() {\n" 6313 " return 42;\n" 6314 "}", 6315 MergeInlineOnly); 6316 } 6317 6318 TEST_F(FormatTest, UnderstandContextOfRecordTypeKeywords) { 6319 // Elaborate type variable declarations. 6320 verifyFormat("struct foo a = {bar};\nint n;"); 6321 verifyFormat("class foo a = {bar};\nint n;"); 6322 verifyFormat("union foo a = {bar};\nint n;"); 6323 6324 // Elaborate types inside function definitions. 6325 verifyFormat("struct foo f() {}\nint n;"); 6326 verifyFormat("class foo f() {}\nint n;"); 6327 verifyFormat("union foo f() {}\nint n;"); 6328 6329 // Templates. 6330 verifyFormat("template <class X> void f() {}\nint n;"); 6331 verifyFormat("template <struct X> void f() {}\nint n;"); 6332 verifyFormat("template <union X> void f() {}\nint n;"); 6333 6334 // Actual definitions... 6335 verifyFormat("struct {\n} n;"); 6336 verifyFormat( 6337 "template <template <class T, class Y>, class Z> class X {\n} n;"); 6338 verifyFormat("union Z {\n int n;\n} x;"); 6339 verifyFormat("class MACRO Z {\n} n;"); 6340 verifyFormat("class MACRO(X) Z {\n} n;"); 6341 verifyFormat("class __attribute__(X) Z {\n} n;"); 6342 verifyFormat("class __declspec(X) Z {\n} n;"); 6343 verifyFormat("class A##B##C {\n} n;"); 6344 verifyFormat("class alignas(16) Z {\n} n;"); 6345 6346 // Redefinition from nested context: 6347 verifyFormat("class A::B::C {\n} n;"); 6348 6349 // Template definitions. 6350 verifyFormat( 6351 "template <typename F>\n" 6352 "Matcher(const Matcher<F> &Other,\n" 6353 " typename enable_if_c<is_base_of<F, T>::value &&\n" 6354 " !is_same<F, T>::value>::type * = 0)\n" 6355 " : Implementation(new ImplicitCastMatcher<F>(Other)) {}"); 6356 6357 // FIXME: This is still incorrectly handled at the formatter side. 6358 verifyFormat("template <> struct X < 15, i<3 && 42 < 50 && 33 < 28> {};"); 6359 6360 // FIXME: 6361 // This now gets parsed incorrectly as class definition. 6362 // verifyFormat("class A<int> f() {\n}\nint n;"); 6363 6364 // Elaborate types where incorrectly parsing the structural element would 6365 // break the indent. 6366 verifyFormat("if (true)\n" 6367 " class X x;\n" 6368 "else\n" 6369 " f();\n"); 6370 6371 // This is simply incomplete. Formatting is not important, but must not crash. 6372 verifyFormat("class A:"); 6373 } 6374 6375 TEST_F(FormatTest, DoNotInterfereWithErrorAndWarning) { 6376 EXPECT_EQ("#error Leave all white!!!!! space* alone!\n", 6377 format("#error Leave all white!!!!! space* alone!\n")); 6378 EXPECT_EQ( 6379 "#warning Leave all white!!!!! space* alone!\n", 6380 format("#warning Leave all white!!!!! space* alone!\n")); 6381 EXPECT_EQ("#error 1", format(" # error 1")); 6382 EXPECT_EQ("#warning 1", format(" # warning 1")); 6383 } 6384 6385 TEST_F(FormatTest, FormatHashIfExpressions) { 6386 verifyFormat("#if AAAA && BBBB"); 6387 // FIXME: Come up with a better indentation for #elif. 6388 verifyFormat( 6389 "#if !defined(AAAAAAA) && (defined CCCCCC || defined DDDDDD) && \\\n" 6390 " defined(BBBBBBBB)\n" 6391 "#elif !defined(AAAAAA) && (defined CCCCC || defined DDDDDD) && \\\n" 6392 " defined(BBBBBBBB)\n" 6393 "#endif", 6394 getLLVMStyleWithColumns(65)); 6395 } 6396 6397 TEST_F(FormatTest, MergeHandlingInTheFaceOfPreprocessorDirectives) { 6398 FormatStyle AllowsMergedIf = getGoogleStyle(); 6399 AllowsMergedIf.AllowShortIfStatementsOnASingleLine = true; 6400 verifyFormat("void f() { f(); }\n#error E", AllowsMergedIf); 6401 verifyFormat("if (true) return 42;\n#error E", AllowsMergedIf); 6402 verifyFormat("if (true)\n#error E\n return 42;", AllowsMergedIf); 6403 EXPECT_EQ("if (true) return 42;", 6404 format("if (true)\nreturn 42;", AllowsMergedIf)); 6405 FormatStyle ShortMergedIf = AllowsMergedIf; 6406 ShortMergedIf.ColumnLimit = 25; 6407 verifyFormat("#define A \\\n" 6408 " if (true) return 42;", 6409 ShortMergedIf); 6410 verifyFormat("#define A \\\n" 6411 " f(); \\\n" 6412 " if (true)\n" 6413 "#define B", 6414 ShortMergedIf); 6415 verifyFormat("#define A \\\n" 6416 " f(); \\\n" 6417 " if (true)\n" 6418 "g();", 6419 ShortMergedIf); 6420 verifyFormat("{\n" 6421 "#ifdef A\n" 6422 " // Comment\n" 6423 " if (true) continue;\n" 6424 "#endif\n" 6425 " // Comment\n" 6426 " if (true) continue;\n" 6427 "}", 6428 ShortMergedIf); 6429 ShortMergedIf.ColumnLimit = 29; 6430 verifyFormat("#define A \\\n" 6431 " if (aaaaaaaaaa) return 1; \\\n" 6432 " return 2;", 6433 ShortMergedIf); 6434 ShortMergedIf.ColumnLimit = 28; 6435 verifyFormat("#define A \\\n" 6436 " if (aaaaaaaaaa) \\\n" 6437 " return 1; \\\n" 6438 " return 2;", 6439 ShortMergedIf); 6440 } 6441 6442 TEST_F(FormatTest, BlockCommentsInControlLoops) { 6443 verifyFormat("if (0) /* a comment in a strange place */ {\n" 6444 " f();\n" 6445 "}"); 6446 verifyFormat("if (0) /* a comment in a strange place */ {\n" 6447 " f();\n" 6448 "} /* another comment */ else /* comment #3 */ {\n" 6449 " g();\n" 6450 "}"); 6451 verifyFormat("while (0) /* a comment in a strange place */ {\n" 6452 " f();\n" 6453 "}"); 6454 verifyFormat("for (;;) /* a comment in a strange place */ {\n" 6455 " f();\n" 6456 "}"); 6457 verifyFormat("do /* a comment in a strange place */ {\n" 6458 " f();\n" 6459 "} /* another comment */ while (0);"); 6460 } 6461 6462 TEST_F(FormatTest, BlockComments) { 6463 EXPECT_EQ("/* */ /* */ /* */\n/* */ /* */ /* */", 6464 format("/* *//* */ /* */\n/* *//* */ /* */")); 6465 EXPECT_EQ("/* */ a /* */ b;", format(" /* */ a/* */ b;")); 6466 EXPECT_EQ("#define A /*123*/ \\\n" 6467 " b\n" 6468 "/* */\n" 6469 "someCall(\n" 6470 " parameter);", 6471 format("#define A /*123*/ b\n" 6472 "/* */\n" 6473 "someCall(parameter);", 6474 getLLVMStyleWithColumns(15))); 6475 6476 EXPECT_EQ("#define A\n" 6477 "/* */ someCall(\n" 6478 " parameter);", 6479 format("#define A\n" 6480 "/* */someCall(parameter);", 6481 getLLVMStyleWithColumns(15))); 6482 EXPECT_EQ("/*\n**\n*/", format("/*\n**\n*/")); 6483 EXPECT_EQ("/*\n" 6484 "*\n" 6485 " * aaaaaa\n" 6486 "*aaaaaa\n" 6487 "*/", 6488 format("/*\n" 6489 "*\n" 6490 " * aaaaaa aaaaaa\n" 6491 "*/", 6492 getLLVMStyleWithColumns(10))); 6493 EXPECT_EQ("/*\n" 6494 "**\n" 6495 "* aaaaaa\n" 6496 "*aaaaaa\n" 6497 "*/", 6498 format("/*\n" 6499 "**\n" 6500 "* aaaaaa aaaaaa\n" 6501 "*/", 6502 getLLVMStyleWithColumns(10))); 6503 6504 FormatStyle NoBinPacking = getLLVMStyle(); 6505 NoBinPacking.BinPackParameters = false; 6506 EXPECT_EQ("someFunction(1, /* comment 1 */\n" 6507 " 2, /* comment 2 */\n" 6508 " 3, /* comment 3 */\n" 6509 " aaaa,\n" 6510 " bbbb);", 6511 format("someFunction (1, /* comment 1 */\n" 6512 " 2, /* comment 2 */ \n" 6513 " 3, /* comment 3 */\n" 6514 "aaaa, bbbb );", 6515 NoBinPacking)); 6516 verifyFormat( 6517 "bool aaaaaaaaaaaaa = /* comment: */ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6518 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 6519 EXPECT_EQ( 6520 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 6521 " aaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6522 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;", 6523 format( 6524 "bool aaaaaaaaaaaaa = /* trailing comment */\n" 6525 " aaaaaaaaaaaaaaaaaaaaaaaaaaa||aaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 6526 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa || aaaaaaaaaaaaaaaaaaaaaaaaaa;")); 6527 EXPECT_EQ( 6528 "int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 6529 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 6530 "int cccccccccccccccccccccccccccccc; /* comment */\n", 6531 format("int aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa; /* comment */\n" 6532 "int bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb; /* comment */\n" 6533 "int cccccccccccccccccccccccccccccc; /* comment */\n")); 6534 6535 verifyFormat("void f(int * /* unused */) {}"); 6536 6537 EXPECT_EQ("/*\n" 6538 " **\n" 6539 " */", 6540 format("/*\n" 6541 " **\n" 6542 " */")); 6543 EXPECT_EQ("/*\n" 6544 " *q\n" 6545 " */", 6546 format("/*\n" 6547 " *q\n" 6548 " */")); 6549 EXPECT_EQ("/*\n" 6550 " * q\n" 6551 " */", 6552 format("/*\n" 6553 " * q\n" 6554 " */")); 6555 EXPECT_EQ("/*\n" 6556 " **/", 6557 format("/*\n" 6558 " **/")); 6559 EXPECT_EQ("/*\n" 6560 " ***/", 6561 format("/*\n" 6562 " ***/")); 6563 } 6564 6565 TEST_F(FormatTest, BlockCommentsInMacros) { 6566 EXPECT_EQ("#define A \\\n" 6567 " { \\\n" 6568 " /* one line */ \\\n" 6569 " someCall();", 6570 format("#define A { \\\n" 6571 " /* one line */ \\\n" 6572 " someCall();", 6573 getLLVMStyleWithColumns(20))); 6574 EXPECT_EQ("#define A \\\n" 6575 " { \\\n" 6576 " /* previous */ \\\n" 6577 " /* one line */ \\\n" 6578 " someCall();", 6579 format("#define A { \\\n" 6580 " /* previous */ \\\n" 6581 " /* one line */ \\\n" 6582 " someCall();", 6583 getLLVMStyleWithColumns(20))); 6584 } 6585 6586 TEST_F(FormatTest, BlockCommentsAtEndOfLine) { 6587 EXPECT_EQ("a = {\n" 6588 " 1111 /* */\n" 6589 "};", 6590 format("a = {1111 /* */\n" 6591 "};", 6592 getLLVMStyleWithColumns(15))); 6593 EXPECT_EQ("a = {\n" 6594 " 1111 /* */\n" 6595 "};", 6596 format("a = {1111 /* */\n" 6597 "};", 6598 getLLVMStyleWithColumns(15))); 6599 6600 // FIXME: The formatting is still wrong here. 6601 EXPECT_EQ("a = {\n" 6602 " 1111 /* a\n" 6603 " */\n" 6604 "};", 6605 format("a = {1111 /* a */\n" 6606 "};", 6607 getLLVMStyleWithColumns(15))); 6608 } 6609 6610 TEST_F(FormatTest, IndentLineCommentsInStartOfBlockAtEndOfFile) { 6611 // FIXME: This is not what we want... 6612 verifyFormat("{\n" 6613 "// a" 6614 "// b"); 6615 } 6616 6617 TEST_F(FormatTest, FormatStarDependingOnContext) { 6618 verifyFormat("void f(int *a);"); 6619 verifyFormat("void f() { f(fint * b); }"); 6620 verifyFormat("class A {\n void f(int *a);\n};"); 6621 verifyFormat("class A {\n int *a;\n};"); 6622 verifyFormat("namespace a {\n" 6623 "namespace b {\n" 6624 "class A {\n" 6625 " void f() {}\n" 6626 " int *a;\n" 6627 "};\n" 6628 "}\n" 6629 "}"); 6630 } 6631 6632 TEST_F(FormatTest, SpecialTokensAtEndOfLine) { 6633 verifyFormat("while"); 6634 verifyFormat("operator"); 6635 } 6636 6637 //===----------------------------------------------------------------------===// 6638 // Objective-C tests. 6639 //===----------------------------------------------------------------------===// 6640 6641 TEST_F(FormatTest, FormatForObjectiveCMethodDecls) { 6642 verifyFormat("- (void)sendAction:(SEL)aSelector to:(BOOL)anObject;"); 6643 EXPECT_EQ("- (NSUInteger)indexOfObject:(id)anObject;", 6644 format("-(NSUInteger)indexOfObject:(id)anObject;")); 6645 EXPECT_EQ("- (NSInteger)Mthod1;", format("-(NSInteger)Mthod1;")); 6646 EXPECT_EQ("+ (id)Mthod2;", format("+(id)Mthod2;")); 6647 EXPECT_EQ("- (NSInteger)Method3:(id)anObject;", 6648 format("-(NSInteger)Method3:(id)anObject;")); 6649 EXPECT_EQ("- (NSInteger)Method4:(id)anObject;", 6650 format("-(NSInteger)Method4:(id)anObject;")); 6651 EXPECT_EQ("- (NSInteger)Method5:(id)anObject:(id)AnotherObject;", 6652 format("-(NSInteger)Method5:(id)anObject:(id)AnotherObject;")); 6653 EXPECT_EQ("- (id)Method6:(id)A:(id)B:(id)C:(id)D;", 6654 format("- (id)Method6:(id)A:(id)B:(id)C:(id)D;")); 6655 EXPECT_EQ( 6656 "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;", 6657 format( 6658 "- (void)sendAction:(SEL)aSelector to:(id)anObject forAllCells:(BOOL)flag;")); 6659 6660 // Very long objectiveC method declaration. 6661 verifyFormat("- (void)aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 6662 " (SoooooooooooooooooooooomeType *)bbbbbbbbbb;"); 6663 verifyFormat("- (NSUInteger)indexOfObject:(id)anObject\n" 6664 " inRange:(NSRange)range\n" 6665 " outRange:(NSRange)out_range\n" 6666 " outRange1:(NSRange)out_range1\n" 6667 " outRange2:(NSRange)out_range2\n" 6668 " outRange3:(NSRange)out_range3\n" 6669 " outRange4:(NSRange)out_range4\n" 6670 " outRange5:(NSRange)out_range5\n" 6671 " outRange6:(NSRange)out_range6\n" 6672 " outRange7:(NSRange)out_range7\n" 6673 " outRange8:(NSRange)out_range8\n" 6674 " outRange9:(NSRange)out_range9;"); 6675 6676 verifyFormat("- (int)sum:(vector<int>)numbers;"); 6677 verifyGoogleFormat("- (void)setDelegate:(id<Protocol>)delegate;"); 6678 // FIXME: In LLVM style, there should be a space in front of a '<' for ObjC 6679 // protocol lists (but not for template classes): 6680 //verifyFormat("- (void)setDelegate:(id <Protocol>)delegate;"); 6681 6682 verifyFormat("- (int (*)())foo:(int (*)())f;"); 6683 verifyGoogleFormat("- (int (*)())foo:(int (*)())foo;"); 6684 6685 // If there's no return type (very rare in practice!), LLVM and Google style 6686 // agree. 6687 verifyFormat("- foo;"); 6688 verifyFormat("- foo:(int)f;"); 6689 verifyGoogleFormat("- foo:(int)foo;"); 6690 } 6691 6692 TEST_F(FormatTest, FormatObjCInterface) { 6693 verifyFormat("@interface Foo : NSObject <NSSomeDelegate> {\n" 6694 "@public\n" 6695 " int field1;\n" 6696 "@protected\n" 6697 " int field2;\n" 6698 "@private\n" 6699 " int field3;\n" 6700 "@package\n" 6701 " int field4;\n" 6702 "}\n" 6703 "+ (id)init;\n" 6704 "@end"); 6705 6706 verifyGoogleFormat("@interface Foo : NSObject<NSSomeDelegate> {\n" 6707 " @public\n" 6708 " int field1;\n" 6709 " @protected\n" 6710 " int field2;\n" 6711 " @private\n" 6712 " int field3;\n" 6713 " @package\n" 6714 " int field4;\n" 6715 "}\n" 6716 "+ (id)init;\n" 6717 "@end"); 6718 6719 verifyFormat("@interface /* wait for it */ Foo\n" 6720 "+ (id)init;\n" 6721 "// Look, a comment!\n" 6722 "- (int)answerWith:(int)i;\n" 6723 "@end"); 6724 6725 verifyFormat("@interface Foo\n" 6726 "@end\n" 6727 "@interface Bar\n" 6728 "@end"); 6729 6730 verifyFormat("@interface Foo : Bar\n" 6731 "+ (id)init;\n" 6732 "@end"); 6733 6734 verifyFormat("@interface Foo : /**/ Bar /**/ <Baz, /**/ Quux>\n" 6735 "+ (id)init;\n" 6736 "@end"); 6737 6738 verifyGoogleFormat("@interface Foo : Bar<Baz, Quux>\n" 6739 "+ (id)init;\n" 6740 "@end"); 6741 6742 verifyFormat("@interface Foo (HackStuff)\n" 6743 "+ (id)init;\n" 6744 "@end"); 6745 6746 verifyFormat("@interface Foo ()\n" 6747 "+ (id)init;\n" 6748 "@end"); 6749 6750 verifyFormat("@interface Foo (HackStuff) <MyProtocol>\n" 6751 "+ (id)init;\n" 6752 "@end"); 6753 6754 verifyGoogleFormat("@interface Foo (HackStuff)<MyProtocol>\n" 6755 "+ (id)init;\n" 6756 "@end"); 6757 6758 verifyFormat("@interface Foo {\n" 6759 " int _i;\n" 6760 "}\n" 6761 "+ (id)init;\n" 6762 "@end"); 6763 6764 verifyFormat("@interface Foo : Bar {\n" 6765 " int _i;\n" 6766 "}\n" 6767 "+ (id)init;\n" 6768 "@end"); 6769 6770 verifyFormat("@interface Foo : Bar <Baz, Quux> {\n" 6771 " int _i;\n" 6772 "}\n" 6773 "+ (id)init;\n" 6774 "@end"); 6775 6776 verifyFormat("@interface Foo (HackStuff) {\n" 6777 " int _i;\n" 6778 "}\n" 6779 "+ (id)init;\n" 6780 "@end"); 6781 6782 verifyFormat("@interface Foo () {\n" 6783 " int _i;\n" 6784 "}\n" 6785 "+ (id)init;\n" 6786 "@end"); 6787 6788 verifyFormat("@interface Foo (HackStuff) <MyProtocol> {\n" 6789 " int _i;\n" 6790 "}\n" 6791 "+ (id)init;\n" 6792 "@end"); 6793 6794 FormatStyle OnePerLine = getGoogleStyle(); 6795 OnePerLine.BinPackParameters = false; 6796 verifyFormat("@interface aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa ()<\n" 6797 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6798 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6799 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 6800 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa> {\n" 6801 "}", 6802 OnePerLine); 6803 } 6804 6805 TEST_F(FormatTest, FormatObjCImplementation) { 6806 verifyFormat("@implementation Foo : NSObject {\n" 6807 "@public\n" 6808 " int field1;\n" 6809 "@protected\n" 6810 " int field2;\n" 6811 "@private\n" 6812 " int field3;\n" 6813 "@package\n" 6814 " int field4;\n" 6815 "}\n" 6816 "+ (id)init {\n}\n" 6817 "@end"); 6818 6819 verifyGoogleFormat("@implementation Foo : NSObject {\n" 6820 " @public\n" 6821 " int field1;\n" 6822 " @protected\n" 6823 " int field2;\n" 6824 " @private\n" 6825 " int field3;\n" 6826 " @package\n" 6827 " int field4;\n" 6828 "}\n" 6829 "+ (id)init {\n}\n" 6830 "@end"); 6831 6832 verifyFormat("@implementation Foo\n" 6833 "+ (id)init {\n" 6834 " if (true)\n" 6835 " return nil;\n" 6836 "}\n" 6837 "// Look, a comment!\n" 6838 "- (int)answerWith:(int)i {\n" 6839 " return i;\n" 6840 "}\n" 6841 "+ (int)answerWith:(int)i {\n" 6842 " return i;\n" 6843 "}\n" 6844 "@end"); 6845 6846 verifyFormat("@implementation Foo\n" 6847 "@end\n" 6848 "@implementation Bar\n" 6849 "@end"); 6850 6851 EXPECT_EQ("@implementation Foo : Bar\n" 6852 "+ (id)init {\n}\n" 6853 "- (void)foo {\n}\n" 6854 "@end", 6855 format("@implementation Foo : Bar\n" 6856 "+(id)init{}\n" 6857 "-(void)foo{}\n" 6858 "@end")); 6859 6860 verifyFormat("@implementation Foo {\n" 6861 " int _i;\n" 6862 "}\n" 6863 "+ (id)init {\n}\n" 6864 "@end"); 6865 6866 verifyFormat("@implementation Foo : Bar {\n" 6867 " int _i;\n" 6868 "}\n" 6869 "+ (id)init {\n}\n" 6870 "@end"); 6871 6872 verifyFormat("@implementation Foo (HackStuff)\n" 6873 "+ (id)init {\n}\n" 6874 "@end"); 6875 verifyFormat("@implementation ObjcClass\n" 6876 "- (void)method;\n" 6877 "{}\n" 6878 "@end"); 6879 } 6880 6881 TEST_F(FormatTest, FormatObjCProtocol) { 6882 verifyFormat("@protocol Foo\n" 6883 "@property(weak) id delegate;\n" 6884 "- (NSUInteger)numberOfThings;\n" 6885 "@end"); 6886 6887 verifyFormat("@protocol MyProtocol <NSObject>\n" 6888 "- (NSUInteger)numberOfThings;\n" 6889 "@end"); 6890 6891 verifyGoogleFormat("@protocol MyProtocol<NSObject>\n" 6892 "- (NSUInteger)numberOfThings;\n" 6893 "@end"); 6894 6895 verifyFormat("@protocol Foo;\n" 6896 "@protocol Bar;\n"); 6897 6898 verifyFormat("@protocol Foo\n" 6899 "@end\n" 6900 "@protocol Bar\n" 6901 "@end"); 6902 6903 verifyFormat("@protocol myProtocol\n" 6904 "- (void)mandatoryWithInt:(int)i;\n" 6905 "@optional\n" 6906 "- (void)optional;\n" 6907 "@required\n" 6908 "- (void)required;\n" 6909 "@optional\n" 6910 "@property(assign) int madProp;\n" 6911 "@end\n"); 6912 6913 verifyFormat("@property(nonatomic, assign, readonly)\n" 6914 " int *looooooooooooooooooooooooooooongNumber;\n" 6915 "@property(nonatomic, assign, readonly)\n" 6916 " NSString *looooooooooooooooooooooooooooongName;"); 6917 6918 verifyFormat("@implementation PR18406\n" 6919 "}\n" 6920 "@end"); 6921 } 6922 6923 TEST_F(FormatTest, FormatObjCMethodDeclarations) { 6924 verifyFormat("- (void)doSomethingWith:(GTMFoo *)theFoo\n" 6925 " rect:(NSRect)theRect\n" 6926 " interval:(float)theInterval {\n" 6927 "}"); 6928 verifyFormat("- (void)shortf:(GTMFoo *)theFoo\n" 6929 " longKeyword:(NSRect)theRect\n" 6930 " evenLongerKeyword:(float)theInterval\n" 6931 " error:(NSError **)theError {\n" 6932 "}"); 6933 verifyFormat("- (instancetype)initXxxxxx:(id<x>)x\n" 6934 " y:(id<yyyyyyyyyyyyyyyyyyyy>)y\n" 6935 " NS_DESIGNATED_INITIALIZER;", 6936 getLLVMStyleWithColumns(60)); 6937 } 6938 6939 TEST_F(FormatTest, FormatObjCMethodExpr) { 6940 verifyFormat("[foo bar:baz];"); 6941 verifyFormat("return [foo bar:baz];"); 6942 verifyFormat("return (a)[foo bar:baz];"); 6943 verifyFormat("f([foo bar:baz]);"); 6944 verifyFormat("f(2, [foo bar:baz]);"); 6945 verifyFormat("f(2, a ? b : c);"); 6946 verifyFormat("[[self initWithInt:4] bar:[baz quux:arrrr]];"); 6947 6948 // Unary operators. 6949 verifyFormat("int a = +[foo bar:baz];"); 6950 verifyFormat("int a = -[foo bar:baz];"); 6951 verifyFormat("int a = ![foo bar:baz];"); 6952 verifyFormat("int a = ~[foo bar:baz];"); 6953 verifyFormat("int a = ++[foo bar:baz];"); 6954 verifyFormat("int a = --[foo bar:baz];"); 6955 verifyFormat("int a = sizeof [foo bar:baz];"); 6956 verifyFormat("int a = alignof [foo bar:baz];", getGoogleStyle()); 6957 verifyFormat("int a = &[foo bar:baz];"); 6958 verifyFormat("int a = *[foo bar:baz];"); 6959 // FIXME: Make casts work, without breaking f()[4]. 6960 //verifyFormat("int a = (int)[foo bar:baz];"); 6961 //verifyFormat("return (int)[foo bar:baz];"); 6962 //verifyFormat("(void)[foo bar:baz];"); 6963 verifyFormat("return (MyType *)[self.tableView cellForRowAtIndexPath:cell];"); 6964 6965 // Binary operators. 6966 verifyFormat("[foo bar:baz], [foo bar:baz];"); 6967 verifyFormat("[foo bar:baz] = [foo bar:baz];"); 6968 verifyFormat("[foo bar:baz] *= [foo bar:baz];"); 6969 verifyFormat("[foo bar:baz] /= [foo bar:baz];"); 6970 verifyFormat("[foo bar:baz] %= [foo bar:baz];"); 6971 verifyFormat("[foo bar:baz] += [foo bar:baz];"); 6972 verifyFormat("[foo bar:baz] -= [foo bar:baz];"); 6973 verifyFormat("[foo bar:baz] <<= [foo bar:baz];"); 6974 verifyFormat("[foo bar:baz] >>= [foo bar:baz];"); 6975 verifyFormat("[foo bar:baz] &= [foo bar:baz];"); 6976 verifyFormat("[foo bar:baz] ^= [foo bar:baz];"); 6977 verifyFormat("[foo bar:baz] |= [foo bar:baz];"); 6978 verifyFormat("[foo bar:baz] ? [foo bar:baz] : [foo bar:baz];"); 6979 verifyFormat("[foo bar:baz] || [foo bar:baz];"); 6980 verifyFormat("[foo bar:baz] && [foo bar:baz];"); 6981 verifyFormat("[foo bar:baz] | [foo bar:baz];"); 6982 verifyFormat("[foo bar:baz] ^ [foo bar:baz];"); 6983 verifyFormat("[foo bar:baz] & [foo bar:baz];"); 6984 verifyFormat("[foo bar:baz] == [foo bar:baz];"); 6985 verifyFormat("[foo bar:baz] != [foo bar:baz];"); 6986 verifyFormat("[foo bar:baz] >= [foo bar:baz];"); 6987 verifyFormat("[foo bar:baz] <= [foo bar:baz];"); 6988 verifyFormat("[foo bar:baz] > [foo bar:baz];"); 6989 verifyFormat("[foo bar:baz] < [foo bar:baz];"); 6990 verifyFormat("[foo bar:baz] >> [foo bar:baz];"); 6991 verifyFormat("[foo bar:baz] << [foo bar:baz];"); 6992 verifyFormat("[foo bar:baz] - [foo bar:baz];"); 6993 verifyFormat("[foo bar:baz] + [foo bar:baz];"); 6994 verifyFormat("[foo bar:baz] * [foo bar:baz];"); 6995 verifyFormat("[foo bar:baz] / [foo bar:baz];"); 6996 verifyFormat("[foo bar:baz] % [foo bar:baz];"); 6997 // Whew! 6998 6999 verifyFormat("return in[42];"); 7000 verifyFormat("for (auto v : in[1]) {\n}"); 7001 verifyFormat("for (int i = 0; i < in[a]; ++i) {\n}"); 7002 verifyFormat("for (int i = 0; in[a] < i; ++i) {\n}"); 7003 verifyFormat("for (int i = 0; i < n; ++i, ++in[a]) {\n}"); 7004 verifyFormat("for (int i = 0; i < n; ++i, in[a]++) {\n}"); 7005 verifyFormat("for (int i = 0; i < f(in[a]); ++i, in[a]++) {\n}"); 7006 verifyFormat("for (id foo in [self getStuffFor:bla]) {\n" 7007 "}"); 7008 verifyFormat("[self aaaaa:MACRO(a, b:, c:)];"); 7009 7010 verifyFormat("[self stuffWithInt:(4 + 2) float:4.5];"); 7011 verifyFormat("[self stuffWithInt:a ? b : c float:4.5];"); 7012 verifyFormat("[self stuffWithInt:a ? [self foo:bar] : c];"); 7013 verifyFormat("[self stuffWithInt:a ? (e ? f : g) : c];"); 7014 verifyFormat("[cond ? obj1 : obj2 methodWithParam:param]"); 7015 verifyFormat("[button setAction:@selector(zoomOut:)];"); 7016 verifyFormat("[color getRed:&r green:&g blue:&b alpha:&a];"); 7017 7018 verifyFormat("arr[[self indexForFoo:a]];"); 7019 verifyFormat("throw [self errorFor:a];"); 7020 verifyFormat("@throw [self errorFor:a];"); 7021 7022 verifyFormat("[(id)foo bar:(id)baz quux:(id)snorf];"); 7023 verifyFormat("[(id)foo bar:(id) ? baz : quux];"); 7024 verifyFormat("4 > 4 ? (id)a : (id)baz;"); 7025 7026 // This tests that the formatter doesn't break after "backing" but before ":", 7027 // which would be at 80 columns. 7028 verifyFormat( 7029 "void f() {\n" 7030 " if ((self = [super initWithContentRect:contentRect\n" 7031 " styleMask:styleMask ?: otherMask\n" 7032 " backing:NSBackingStoreBuffered\n" 7033 " defer:YES]))"); 7034 7035 verifyFormat( 7036 "[foo checkThatBreakingAfterColonWorksOk:\n" 7037 " [bar ifItDoes:reduceOverallLineLengthLikeInThisCase]];"); 7038 7039 verifyFormat("[myObj short:arg1 // Force line break\n" 7040 " longKeyword:arg2 != nil ? arg2 : @\"longKeyword\"\n" 7041 " evenLongerKeyword:arg3 ?: @\"evenLongerKeyword\"\n" 7042 " error:arg4];"); 7043 verifyFormat( 7044 "void f() {\n" 7045 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 7046 " initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n" 7047 " pos.width(), pos.height())\n" 7048 " styleMask:NSBorderlessWindowMask\n" 7049 " backing:NSBackingStoreBuffered\n" 7050 " defer:NO]);\n" 7051 "}"); 7052 verifyFormat( 7053 "void f() {\n" 7054 " popup_wdow_.reset([[RenderWidgetPopupWindow alloc]\n" 7055 " iniithContentRect:NSMakRet(origin_global.x, origin_global.y,\n" 7056 " pos.width(), pos.height())\n" 7057 " syeMask:NSBorderlessWindowMask\n" 7058 " bking:NSBackingStoreBuffered\n" 7059 " der:NO]);\n" 7060 "}", 7061 getLLVMStyleWithColumns(70)); 7062 verifyFormat( 7063 "void f() {\n" 7064 " popup_window_.reset([[RenderWidgetPopupWindow alloc]\n" 7065 " initWithContentRect:NSMakeRect(origin_global.x, origin_global.y,\n" 7066 " pos.width(), pos.height())\n" 7067 " styleMask:NSBorderlessWindowMask\n" 7068 " backing:NSBackingStoreBuffered\n" 7069 " defer:NO]);\n" 7070 "}", 7071 getChromiumStyle(FormatStyle::LK_Cpp)); 7072 verifyFormat("[contentsContainer replaceSubview:[subviews objectAtIndex:0]\n" 7073 " with:contentsNativeView];"); 7074 7075 verifyFormat( 7076 "[pboard addTypes:[NSArray arrayWithObject:kBookmarkButtonDragType]\n" 7077 " owner:nillllll];"); 7078 7079 verifyFormat( 7080 "[pboard setData:[NSData dataWithBytes:&button length:sizeof(button)]\n" 7081 " forType:kBookmarkButtonDragType];"); 7082 7083 verifyFormat("[defaultCenter addObserver:self\n" 7084 " selector:@selector(willEnterFullscreen)\n" 7085 " name:kWillEnterFullscreenNotification\n" 7086 " object:nil];"); 7087 verifyFormat("[image_rep drawInRect:drawRect\n" 7088 " fromRect:NSZeroRect\n" 7089 " operation:NSCompositeCopy\n" 7090 " fraction:1.0\n" 7091 " respectFlipped:NO\n" 7092 " hints:nil];"); 7093 7094 verifyFormat( 7095 "scoped_nsobject<NSTextField> message(\n" 7096 " // The frame will be fixed up when |-setMessageText:| is called.\n" 7097 " [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 0, 0)]);"); 7098 verifyFormat("[self aaaaaa:bbbbbbbbbbbbb\n" 7099 " aaaaaaaaaa:bbbbbbbbbbbbbbbbb\n" 7100 " aaaaa:bbbbbbbbbbb + bbbbbbbbbbbb\n" 7101 " aaaa:bbb];"); 7102 verifyFormat("[self param:function( //\n" 7103 " parameter)]"); 7104 verifyFormat( 7105 "[self aaaaaaaaaa:aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 7106 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa |\n" 7107 " aaaaaaaaaaaaaaa | aaaaaaaaaaaaaaa];"); 7108 7109 // Variadic parameters. 7110 verifyFormat( 7111 "NSArray *myStrings = [NSArray stringarray:@\"a\", @\"b\", nil];"); 7112 verifyFormat( 7113 "[self aaaaaaaaaaaaa:aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 7114 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa,\n" 7115 " aaaaaaaaaaaaaaa, aaaaaaaaaaaaaaa];"); 7116 verifyFormat("[self // break\n" 7117 " a:a\n" 7118 " aaa:aaa];"); 7119 verifyFormat("bool a = ([aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaa ||\n" 7120 " [aaaaaaaa aaaaa] == aaaaaaaaaaaaaaaaaaaa);"); 7121 } 7122 7123 TEST_F(FormatTest, ObjCAt) { 7124 verifyFormat("@autoreleasepool"); 7125 verifyFormat("@catch"); 7126 verifyFormat("@class"); 7127 verifyFormat("@compatibility_alias"); 7128 verifyFormat("@defs"); 7129 verifyFormat("@dynamic"); 7130 verifyFormat("@encode"); 7131 verifyFormat("@end"); 7132 verifyFormat("@finally"); 7133 verifyFormat("@implementation"); 7134 verifyFormat("@import"); 7135 verifyFormat("@interface"); 7136 verifyFormat("@optional"); 7137 verifyFormat("@package"); 7138 verifyFormat("@private"); 7139 verifyFormat("@property"); 7140 verifyFormat("@protected"); 7141 verifyFormat("@protocol"); 7142 verifyFormat("@public"); 7143 verifyFormat("@required"); 7144 verifyFormat("@selector"); 7145 verifyFormat("@synchronized"); 7146 verifyFormat("@synthesize"); 7147 verifyFormat("@throw"); 7148 verifyFormat("@try"); 7149 7150 EXPECT_EQ("@interface", format("@ interface")); 7151 7152 // The precise formatting of this doesn't matter, nobody writes code like 7153 // this. 7154 verifyFormat("@ /*foo*/ interface"); 7155 } 7156 7157 TEST_F(FormatTest, ObjCSnippets) { 7158 verifyFormat("@autoreleasepool {\n" 7159 " foo();\n" 7160 "}"); 7161 verifyFormat("@class Foo, Bar;"); 7162 verifyFormat("@compatibility_alias AliasName ExistingClass;"); 7163 verifyFormat("@dynamic textColor;"); 7164 verifyFormat("char *buf1 = @encode(int *);"); 7165 verifyFormat("char *buf1 = @encode(typeof(4 * 5));"); 7166 verifyFormat("char *buf1 = @encode(int **);"); 7167 verifyFormat("Protocol *proto = @protocol(p1);"); 7168 verifyFormat("SEL s = @selector(foo:);"); 7169 verifyFormat("@synchronized(self) {\n" 7170 " f();\n" 7171 "}"); 7172 7173 verifyFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 7174 verifyGoogleFormat("@synthesize dropArrowPosition = dropArrowPosition_;"); 7175 7176 verifyFormat("@property(assign, nonatomic) CGFloat hoverAlpha;"); 7177 verifyFormat("@property(assign, getter=isEditable) BOOL editable;"); 7178 verifyGoogleFormat("@property(assign, getter=isEditable) BOOL editable;"); 7179 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 7180 getMozillaStyle()); 7181 verifyFormat("@property BOOL editable;", getMozillaStyle()); 7182 verifyFormat("@property (assign, getter=isEditable) BOOL editable;", 7183 getWebKitStyle()); 7184 verifyFormat("@property BOOL editable;", getWebKitStyle()); 7185 7186 verifyFormat("@import foo.bar;\n" 7187 "@import baz;"); 7188 } 7189 7190 TEST_F(FormatTest, ObjCLiterals) { 7191 verifyFormat("@\"String\""); 7192 verifyFormat("@1"); 7193 verifyFormat("@+4.8"); 7194 verifyFormat("@-4"); 7195 verifyFormat("@1LL"); 7196 verifyFormat("@.5"); 7197 verifyFormat("@'c'"); 7198 verifyFormat("@true"); 7199 7200 verifyFormat("NSNumber *smallestInt = @(-INT_MAX - 1);"); 7201 verifyFormat("NSNumber *piOverTwo = @(M_PI / 2);"); 7202 verifyFormat("NSNumber *favoriteColor = @(Green);"); 7203 verifyFormat("NSString *path = @(getenv(\"PATH\"));"); 7204 7205 verifyFormat("[dictionary setObject:@(1) forKey:@\"number\"];"); 7206 } 7207 7208 TEST_F(FormatTest, ObjCDictLiterals) { 7209 verifyFormat("@{"); 7210 verifyFormat("@{}"); 7211 verifyFormat("@{@\"one\" : @1}"); 7212 verifyFormat("return @{@\"one\" : @1;"); 7213 verifyFormat("@{@\"one\" : @1}"); 7214 7215 verifyFormat("@{@\"one\" : @{@2 : @1}}"); 7216 verifyFormat("@{\n" 7217 " @\"one\" : @{@2 : @1},\n" 7218 "}"); 7219 7220 verifyFormat("@{1 > 2 ? @\"one\" : @\"two\" : 1 > 2 ? @1 : @2}"); 7221 verifyFormat("[self setDict:@{}"); 7222 verifyFormat("[self setDict:@{@1 : @2}"); 7223 verifyFormat("NSLog(@\"%@\", @{@1 : @2, @2 : @3}[@1]);"); 7224 verifyFormat( 7225 "NSDictionary *masses = @{@\"H\" : @1.0078, @\"He\" : @4.0026};"); 7226 verifyFormat( 7227 "NSDictionary *settings = @{AVEncoderKey : @(AVAudioQualityMax)};"); 7228 7229 verifyFormat( 7230 "NSDictionary *d = @{\n" 7231 " @\"nam\" : NSUserNam(),\n" 7232 " @\"dte\" : [NSDate date],\n" 7233 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 7234 "};"); 7235 verifyFormat( 7236 "@{\n" 7237 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 7238 "regularFont,\n" 7239 "};"); 7240 verifyGoogleFormat( 7241 "@{\n" 7242 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee : " 7243 "regularFont,\n" 7244 "};"); 7245 verifyFormat( 7246 "@{\n" 7247 " NSFontAttributeNameeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee :\n" 7248 " reeeeeeeeeeeeeeeeeeeeeeeegularFont,\n" 7249 "};"); 7250 7251 // We should try to be robust in case someone forgets the "@". 7252 verifyFormat( 7253 "NSDictionary *d = {\n" 7254 " @\"nam\" : NSUserNam(),\n" 7255 " @\"dte\" : [NSDate date],\n" 7256 " @\"processInfo\" : [NSProcessInfo processInfo]\n" 7257 "};"); 7258 verifyFormat("NSMutableDictionary *dictionary =\n" 7259 " [NSMutableDictionary dictionaryWithDictionary:@{\n" 7260 " aaaaaaaaaaaaaaaaaaaaa : aaaaaaaaaaaaa,\n" 7261 " bbbbbbbbbbbbbbbbbb : bbbbb,\n" 7262 " cccccccccccccccc : ccccccccccccccc\n" 7263 " }];"); 7264 } 7265 7266 TEST_F(FormatTest, ObjCArrayLiterals) { 7267 verifyFormat("@["); 7268 verifyFormat("@[]"); 7269 verifyFormat( 7270 "NSArray *array = @[ @\" Hey \", NSApp, [NSNumber numberWithInt:42] ];"); 7271 verifyFormat("return @[ @3, @[], @[ @4, @5 ] ];"); 7272 verifyFormat("NSArray *array = @[ [foo description] ];"); 7273 7274 verifyFormat( 7275 "NSArray *some_variable = @[\n" 7276 " aaaa == bbbbbbbbbbb ? @\"aaaaaaaaaaaa\" : @\"aaaaaaaaaaaaaa\",\n" 7277 " @\"aaaaaaaaaaaaaaaaa\",\n" 7278 " @\"aaaaaaaaaaaaaaaaa\",\n" 7279 " @\"aaaaaaaaaaaaaaaaa\"\n" 7280 "];"); 7281 verifyFormat("NSArray *some_variable = @[\n" 7282 " @\"aaaaaaaaaaaaaaaaa\",\n" 7283 " @\"aaaaaaaaaaaaaaaaa\",\n" 7284 " @\"aaaaaaaaaaaaaaaaa\",\n" 7285 " @\"aaaaaaaaaaaaaaaaa\",\n" 7286 "];"); 7287 verifyGoogleFormat("NSArray *some_variable = @[\n" 7288 " @\"aaaaaaaaaaaaaaaaa\",\n" 7289 " @\"aaaaaaaaaaaaaaaaa\",\n" 7290 " @\"aaaaaaaaaaaaaaaaa\",\n" 7291 " @\"aaaaaaaaaaaaaaaaa\"\n" 7292 "];"); 7293 verifyFormat("NSArray *array = @[\n" 7294 " @\"a\",\n" 7295 " @\"a\",\n" // Trailing comma -> one per line. 7296 "];"); 7297 7298 // We should try to be robust in case someone forgets the "@". 7299 verifyFormat("NSArray *some_variable = [\n" 7300 " @\"aaaaaaaaaaaaaaaaa\",\n" 7301 " @\"aaaaaaaaaaaaaaaaa\",\n" 7302 " @\"aaaaaaaaaaaaaaaaa\",\n" 7303 " @\"aaaaaaaaaaaaaaaaa\",\n" 7304 "];"); 7305 verifyFormat( 7306 "- (NSAttributedString *)attributedStringForSegment:(NSUInteger)segment\n" 7307 " index:(NSUInteger)index\n" 7308 " nonDigitAttributes:\n" 7309 " (NSDictionary *)noDigitAttributes;"); 7310 verifyFormat( 7311 "[someFunction someLooooooooooooongParameter:\n" 7312 " @[ NSBundle.mainBundle.infoDictionary[@\"a\"] ]];"); 7313 } 7314 7315 TEST_F(FormatTest, ReformatRegionAdjustsIndent) { 7316 EXPECT_EQ("{\n" 7317 "{\n" 7318 "a;\n" 7319 "b;\n" 7320 "}\n" 7321 "}", 7322 format("{\n" 7323 "{\n" 7324 "a;\n" 7325 " b;\n" 7326 "}\n" 7327 "}", 7328 13, 2, getLLVMStyle())); 7329 EXPECT_EQ("{\n" 7330 "{\n" 7331 " a;\n" 7332 "b;\n" 7333 "}\n" 7334 "}", 7335 format("{\n" 7336 "{\n" 7337 " a;\n" 7338 "b;\n" 7339 "}\n" 7340 "}", 7341 9, 2, getLLVMStyle())); 7342 EXPECT_EQ("{\n" 7343 "{\n" 7344 "public:\n" 7345 " b;\n" 7346 "}\n" 7347 "}", 7348 format("{\n" 7349 "{\n" 7350 "public:\n" 7351 " b;\n" 7352 "}\n" 7353 "}", 7354 17, 2, getLLVMStyle())); 7355 EXPECT_EQ("{\n" 7356 "{\n" 7357 "a;\n" 7358 "}\n" 7359 "{\n" 7360 " b; //\n" 7361 "}\n" 7362 "}", 7363 format("{\n" 7364 "{\n" 7365 "a;\n" 7366 "}\n" 7367 "{\n" 7368 " b; //\n" 7369 "}\n" 7370 "}", 7371 22, 2, getLLVMStyle())); 7372 EXPECT_EQ(" {\n" 7373 " a; //\n" 7374 " }", 7375 format(" {\n" 7376 "a; //\n" 7377 " }", 7378 4, 2, getLLVMStyle())); 7379 EXPECT_EQ("void f() {}\n" 7380 "void g() {}", 7381 format("void f() {}\n" 7382 "void g() {}", 7383 13, 0, getLLVMStyle())); 7384 EXPECT_EQ("int a; // comment\n" 7385 " // line 2\n" 7386 "int b;", 7387 format("int a; // comment\n" 7388 " // line 2\n" 7389 " int b;", 7390 35, 0, getLLVMStyle())); 7391 EXPECT_EQ(" int a;\n" 7392 " void\n" 7393 " ffffff() {\n" 7394 " }", 7395 format(" int a;\n" 7396 "void ffffff() {}", 7397 11, 0, getLLVMStyleWithColumns(11))); 7398 7399 EXPECT_EQ(" void f() {\n" 7400 "#define A 1\n" 7401 " }", 7402 format(" void f() {\n" 7403 " #define A 1\n" // Format this line. 7404 " }", 7405 20, 0, getLLVMStyle())); 7406 EXPECT_EQ(" void f() {\n" 7407 " int i;\n" 7408 "#define A \\\n" 7409 " int i; \\\n" 7410 " int j;\n" 7411 " int k;\n" 7412 " }", 7413 format(" void f() {\n" 7414 " int i;\n" 7415 "#define A \\\n" 7416 " int i; \\\n" 7417 " int j;\n" 7418 " int k;\n" // Format this line. 7419 " }", 7420 67, 0, getLLVMStyle())); 7421 } 7422 7423 TEST_F(FormatTest, BreaksStringLiterals) { 7424 EXPECT_EQ("\"some text \"\n" 7425 "\"other\";", 7426 format("\"some text other\";", getLLVMStyleWithColumns(12))); 7427 EXPECT_EQ("\"some text \"\n" 7428 "\"other\";", 7429 format("\\\n\"some text other\";", getLLVMStyleWithColumns(12))); 7430 EXPECT_EQ( 7431 "#define A \\\n" 7432 " \"some \" \\\n" 7433 " \"text \" \\\n" 7434 " \"other\";", 7435 format("#define A \"some text other\";", getLLVMStyleWithColumns(12))); 7436 EXPECT_EQ( 7437 "#define A \\\n" 7438 " \"so \" \\\n" 7439 " \"text \" \\\n" 7440 " \"other\";", 7441 format("#define A \"so text other\";", getLLVMStyleWithColumns(12))); 7442 7443 EXPECT_EQ("\"some text\"", 7444 format("\"some text\"", getLLVMStyleWithColumns(1))); 7445 EXPECT_EQ("\"some text\"", 7446 format("\"some text\"", getLLVMStyleWithColumns(11))); 7447 EXPECT_EQ("\"some \"\n" 7448 "\"text\"", 7449 format("\"some text\"", getLLVMStyleWithColumns(10))); 7450 EXPECT_EQ("\"some \"\n" 7451 "\"text\"", 7452 format("\"some text\"", getLLVMStyleWithColumns(7))); 7453 EXPECT_EQ("\"some\"\n" 7454 "\" tex\"\n" 7455 "\"t\"", 7456 format("\"some text\"", getLLVMStyleWithColumns(6))); 7457 EXPECT_EQ("\"some\"\n" 7458 "\" tex\"\n" 7459 "\" and\"", 7460 format("\"some tex and\"", getLLVMStyleWithColumns(6))); 7461 EXPECT_EQ("\"some\"\n" 7462 "\"/tex\"\n" 7463 "\"/and\"", 7464 format("\"some/tex/and\"", getLLVMStyleWithColumns(6))); 7465 7466 EXPECT_EQ("variable =\n" 7467 " \"long string \"\n" 7468 " \"literal\";", 7469 format("variable = \"long string literal\";", 7470 getLLVMStyleWithColumns(20))); 7471 7472 EXPECT_EQ("variable = f(\n" 7473 " \"long string \"\n" 7474 " \"literal\",\n" 7475 " short,\n" 7476 " loooooooooooooooooooong);", 7477 format("variable = f(\"long string literal\", short, " 7478 "loooooooooooooooooooong);", 7479 getLLVMStyleWithColumns(20))); 7480 7481 EXPECT_EQ("f(g(\"long string \"\n" 7482 " \"literal\"),\n" 7483 " b);", 7484 format("f(g(\"long string literal\"), b);", 7485 getLLVMStyleWithColumns(20))); 7486 EXPECT_EQ("f(g(\"long string \"\n" 7487 " \"literal\",\n" 7488 " a),\n" 7489 " b);", 7490 format("f(g(\"long string literal\", a), b);", 7491 getLLVMStyleWithColumns(20))); 7492 EXPECT_EQ( 7493 "f(\"one two\".split(\n" 7494 " variable));", 7495 format("f(\"one two\".split(variable));", getLLVMStyleWithColumns(20))); 7496 EXPECT_EQ("f(\"one two three four five six \"\n" 7497 " \"seven\".split(\n" 7498 " really_looooong_variable));", 7499 format("f(\"one two three four five six seven\"." 7500 "split(really_looooong_variable));", 7501 getLLVMStyleWithColumns(33))); 7502 7503 EXPECT_EQ("f(\"some \"\n" 7504 " \"text\",\n" 7505 " other);", 7506 format("f(\"some text\", other);", getLLVMStyleWithColumns(10))); 7507 7508 // Only break as a last resort. 7509 verifyFormat( 7510 "aaaaaaaaaaaaaaaaaaaa(\n" 7511 " aaaaaaaaaaaaaaaaaaaa,\n" 7512 " aaaaaa(\"aaa aaaaa aaa aaa aaaaa aaa aaaaa aaa aaa aaaaaa\"));"); 7513 7514 EXPECT_EQ( 7515 "\"splitmea\"\n" 7516 "\"trandomp\"\n" 7517 "\"oint\"", 7518 format("\"splitmeatrandompoint\"", getLLVMStyleWithColumns(10))); 7519 7520 EXPECT_EQ( 7521 "\"split/\"\n" 7522 "\"pathat/\"\n" 7523 "\"slashes\"", 7524 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 7525 7526 EXPECT_EQ( 7527 "\"split/\"\n" 7528 "\"pathat/\"\n" 7529 "\"slashes\"", 7530 format("\"split/pathat/slashes\"", getLLVMStyleWithColumns(10))); 7531 EXPECT_EQ("\"split at \"\n" 7532 "\"spaces/at/\"\n" 7533 "\"slashes.at.any$\"\n" 7534 "\"non-alphanumeric%\"\n" 7535 "\"1111111111characte\"\n" 7536 "\"rs\"", 7537 format("\"split at " 7538 "spaces/at/" 7539 "slashes.at." 7540 "any$non-" 7541 "alphanumeric%" 7542 "1111111111characte" 7543 "rs\"", 7544 getLLVMStyleWithColumns(20))); 7545 7546 // Verify that splitting the strings understands 7547 // Style::AlwaysBreakBeforeMultilineStrings. 7548 EXPECT_EQ("aaaaaaaaaaaa(aaaaaaaaaaaaa,\n" 7549 " \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa \"\n" 7550 " \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\");", 7551 format("aaaaaaaaaaaa(aaaaaaaaaaaaa, \"aaaaaaaaaaaaaaaaaaaaaa " 7552 "aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa " 7553 "aaaaaaaaaaaaaaaaaaaaaa\");", 7554 getGoogleStyle())); 7555 EXPECT_EQ("return \"aaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7556 " \"aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaa\";", 7557 format("return \"aaaaaaaaaaaaaaaaaaaaaa " 7558 "aaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaaa " 7559 "aaaaaaaaaaaaaaaaaaaaaa\";", 7560 getGoogleStyle())); 7561 EXPECT_EQ("llvm::outs() << \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7562 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 7563 format("llvm::outs() << " 7564 "\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa" 7565 "aaaaaaaaaaaaaaaaaaa\";")); 7566 EXPECT_EQ("ffff(\n" 7567 " {\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa \"\n" 7568 " \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 7569 format("ffff({\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa " 7570 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\"});", 7571 getGoogleStyle())); 7572 7573 FormatStyle AlignLeft = getLLVMStyleWithColumns(12); 7574 AlignLeft.AlignEscapedNewlinesLeft = true; 7575 EXPECT_EQ( 7576 "#define A \\\n" 7577 " \"some \" \\\n" 7578 " \"text \" \\\n" 7579 " \"other\";", 7580 format("#define A \"some text other\";", AlignLeft)); 7581 } 7582 7583 TEST_F(FormatTest, BreaksStringLiteralsWithTabs) { 7584 EXPECT_EQ( 7585 "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 7586 "(\n" 7587 " \"x\t\");", 7588 format("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 7589 "aaaaaaa(" 7590 "\"x\t\");")); 7591 } 7592 7593 TEST_F(FormatTest, BreaksWideAndNSStringLiterals) { 7594 EXPECT_EQ( 7595 "u8\"utf8 string \"\n" 7596 "u8\"literal\";", 7597 format("u8\"utf8 string literal\";", getGoogleStyleWithColumns(16))); 7598 EXPECT_EQ( 7599 "u\"utf16 string \"\n" 7600 "u\"literal\";", 7601 format("u\"utf16 string literal\";", getGoogleStyleWithColumns(16))); 7602 EXPECT_EQ( 7603 "U\"utf32 string \"\n" 7604 "U\"literal\";", 7605 format("U\"utf32 string literal\";", getGoogleStyleWithColumns(16))); 7606 EXPECT_EQ("L\"wide string \"\n" 7607 "L\"literal\";", 7608 format("L\"wide string literal\";", getGoogleStyleWithColumns(16))); 7609 EXPECT_EQ("@\"NSString \"\n" 7610 "@\"literal\";", 7611 format("@\"NSString literal\";", getGoogleStyleWithColumns(19))); 7612 7613 // This input makes clang-format try to split the incomplete unicode escape 7614 // sequence, which used to lead to a crasher. 7615 verifyNoCrash( 7616 "aaaaaaaaaaaaaaaaaaaa = L\"\\udff\"'; // aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 7617 getLLVMStyleWithColumns(60)); 7618 } 7619 7620 TEST_F(FormatTest, DoesNotBreakRawStringLiterals) { 7621 FormatStyle Style = getGoogleStyleWithColumns(15); 7622 EXPECT_EQ("R\"x(raw literal)x\";", format("R\"x(raw literal)x\";", Style)); 7623 EXPECT_EQ("uR\"x(raw literal)x\";", format("uR\"x(raw literal)x\";", Style)); 7624 EXPECT_EQ("LR\"x(raw literal)x\";", format("LR\"x(raw literal)x\";", Style)); 7625 EXPECT_EQ("UR\"x(raw literal)x\";", format("UR\"x(raw literal)x\";", Style)); 7626 EXPECT_EQ("u8R\"x(raw literal)x\";", 7627 format("u8R\"x(raw literal)x\";", Style)); 7628 } 7629 7630 TEST_F(FormatTest, BreaksStringLiteralsWithin_TMacro) { 7631 FormatStyle Style = getLLVMStyleWithColumns(20); 7632 EXPECT_EQ( 7633 "_T(\"aaaaaaaaaaaaaa\")\n" 7634 "_T(\"aaaaaaaaaaaaaa\")\n" 7635 "_T(\"aaaaaaaaaaaa\")", 7636 format(" _T(\"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\")", Style)); 7637 EXPECT_EQ("f(x, _T(\"aaaaaaaaa\")\n" 7638 " _T(\"aaaaaa\"),\n" 7639 " z);", 7640 format("f(x, _T(\"aaaaaaaaaaaaaaa\"), z);", Style)); 7641 7642 // FIXME: Handle embedded spaces in one iteration. 7643 // EXPECT_EQ("_T(\"aaaaaaaaaaaaa\")\n" 7644 // "_T(\"aaaaaaaaaaaaa\")\n" 7645 // "_T(\"aaaaaaaaaaaaa\")\n" 7646 // "_T(\"a\")", 7647 // format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 7648 // getLLVMStyleWithColumns(20))); 7649 EXPECT_EQ( 7650 "_T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", 7651 format(" _T ( \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\" )", Style)); 7652 EXPECT_EQ("f(\n" 7653 "#if !TEST\n" 7654 " _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n" 7655 "#endif\n" 7656 " );", 7657 format("f(\n" 7658 "#if !TEST\n" 7659 "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\")\n" 7660 "#endif\n" 7661 ");")); 7662 EXPECT_EQ("f(\n" 7663 "\n" 7664 " _T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));", 7665 format("f(\n" 7666 "\n" 7667 "_T(\"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXn\"));")); 7668 } 7669 7670 TEST_F(FormatTest, DontSplitStringLiteralsWithEscapedNewlines) { 7671 EXPECT_EQ( 7672 "aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7673 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7674 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";", 7675 format("aaaaaaaaaaa = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7676 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\\\n" 7677 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\";")); 7678 } 7679 7680 TEST_F(FormatTest, CountsCharactersInMultilineRawStringLiterals) { 7681 EXPECT_EQ("f(g(R\"x(raw literal)x\", a), b);", 7682 format("f(g(R\"x(raw literal)x\", a), b);", getGoogleStyle())); 7683 EXPECT_EQ("fffffffffff(g(R\"x(\n" 7684 "multiline raw string literal xxxxxxxxxxxxxx\n" 7685 ")x\",\n" 7686 " a),\n" 7687 " b);", 7688 format("fffffffffff(g(R\"x(\n" 7689 "multiline raw string literal xxxxxxxxxxxxxx\n" 7690 ")x\", a), b);", 7691 getGoogleStyleWithColumns(20))); 7692 EXPECT_EQ("fffffffffff(\n" 7693 " g(R\"x(qqq\n" 7694 "multiline raw string literal xxxxxxxxxxxxxx\n" 7695 ")x\",\n" 7696 " a),\n" 7697 " b);", 7698 format("fffffffffff(g(R\"x(qqq\n" 7699 "multiline raw string literal xxxxxxxxxxxxxx\n" 7700 ")x\", a), b);", 7701 getGoogleStyleWithColumns(20))); 7702 7703 EXPECT_EQ("fffffffffff(R\"x(\n" 7704 "multiline raw string literal xxxxxxxxxxxxxx\n" 7705 ")x\");", 7706 format("fffffffffff(R\"x(\n" 7707 "multiline raw string literal xxxxxxxxxxxxxx\n" 7708 ")x\");", 7709 getGoogleStyleWithColumns(20))); 7710 EXPECT_EQ("fffffffffff(R\"x(\n" 7711 "multiline raw string literal xxxxxxxxxxxxxx\n" 7712 ")x\" + bbbbbb);", 7713 format("fffffffffff(R\"x(\n" 7714 "multiline raw string literal xxxxxxxxxxxxxx\n" 7715 ")x\" + bbbbbb);", 7716 getGoogleStyleWithColumns(20))); 7717 EXPECT_EQ("fffffffffff(\n" 7718 " R\"x(\n" 7719 "multiline raw string literal xxxxxxxxxxxxxx\n" 7720 ")x\" +\n" 7721 " bbbbbb);", 7722 format("fffffffffff(\n" 7723 " R\"x(\n" 7724 "multiline raw string literal xxxxxxxxxxxxxx\n" 7725 ")x\" + bbbbbb);", 7726 getGoogleStyleWithColumns(20))); 7727 } 7728 7729 TEST_F(FormatTest, SkipsUnknownStringLiterals) { 7730 verifyFormat("string a = \"unterminated;"); 7731 EXPECT_EQ("function(\"unterminated,\n" 7732 " OtherParameter);", 7733 format("function( \"unterminated,\n" 7734 " OtherParameter);")); 7735 } 7736 7737 TEST_F(FormatTest, DoesNotTryToParseUDLiteralsInPreCpp11Code) { 7738 FormatStyle Style = getLLVMStyle(); 7739 Style.Standard = FormatStyle::LS_Cpp03; 7740 EXPECT_EQ("#define x(_a) printf(\"foo\" _a);", 7741 format("#define x(_a) printf(\"foo\"_a);", Style)); 7742 } 7743 7744 TEST_F(FormatTest, UnderstandsCpp1y) { 7745 verifyFormat("int bi{1'000'000};"); 7746 } 7747 7748 TEST_F(FormatTest, BreakStringLiteralsBeforeUnbreakableTokenSequence) { 7749 EXPECT_EQ("someFunction(\"aaabbbcccd\"\n" 7750 " \"ddeeefff\");", 7751 format("someFunction(\"aaabbbcccdddeeefff\");", 7752 getLLVMStyleWithColumns(25))); 7753 EXPECT_EQ("someFunction1234567890(\n" 7754 " \"aaabbbcccdddeeefff\");", 7755 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7756 getLLVMStyleWithColumns(26))); 7757 EXPECT_EQ("someFunction1234567890(\n" 7758 " \"aaabbbcccdddeeeff\"\n" 7759 " \"f\");", 7760 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7761 getLLVMStyleWithColumns(25))); 7762 EXPECT_EQ("someFunction1234567890(\n" 7763 " \"aaabbbcccdddeeeff\"\n" 7764 " \"f\");", 7765 format("someFunction1234567890(\"aaabbbcccdddeeefff\");", 7766 getLLVMStyleWithColumns(24))); 7767 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 7768 " \"ddde \"\n" 7769 " \"efff\");", 7770 format("someFunction(\"aaabbbcc ddde efff\");", 7771 getLLVMStyleWithColumns(25))); 7772 EXPECT_EQ("someFunction(\"aaabbbccc \"\n" 7773 " \"ddeeefff\");", 7774 format("someFunction(\"aaabbbccc ddeeefff\");", 7775 getLLVMStyleWithColumns(25))); 7776 EXPECT_EQ("someFunction1234567890(\n" 7777 " \"aaabb \"\n" 7778 " \"cccdddeeefff\");", 7779 format("someFunction1234567890(\"aaabb cccdddeeefff\");", 7780 getLLVMStyleWithColumns(25))); 7781 EXPECT_EQ("#define A \\\n" 7782 " string s = \\\n" 7783 " \"123456789\" \\\n" 7784 " \"0\"; \\\n" 7785 " int i;", 7786 format("#define A string s = \"1234567890\"; int i;", 7787 getLLVMStyleWithColumns(20))); 7788 // FIXME: Put additional penalties on breaking at non-whitespace locations. 7789 EXPECT_EQ("someFunction(\"aaabbbcc \"\n" 7790 " \"dddeeeff\"\n" 7791 " \"f\");", 7792 format("someFunction(\"aaabbbcc dddeeefff\");", 7793 getLLVMStyleWithColumns(25))); 7794 } 7795 7796 TEST_F(FormatTest, DoNotBreakStringLiteralsInEscapeSequence) { 7797 EXPECT_EQ("\"\\a\"", 7798 format("\"\\a\"", getLLVMStyleWithColumns(3))); 7799 EXPECT_EQ("\"\\\"", 7800 format("\"\\\"", getLLVMStyleWithColumns(2))); 7801 EXPECT_EQ("\"test\"\n" 7802 "\"\\n\"", 7803 format("\"test\\n\"", getLLVMStyleWithColumns(7))); 7804 EXPECT_EQ("\"tes\\\\\"\n" 7805 "\"n\"", 7806 format("\"tes\\\\n\"", getLLVMStyleWithColumns(7))); 7807 EXPECT_EQ("\"\\\\\\\\\"\n" 7808 "\"\\n\"", 7809 format("\"\\\\\\\\\\n\"", getLLVMStyleWithColumns(7))); 7810 EXPECT_EQ("\"\\uff01\"", 7811 format("\"\\uff01\"", getLLVMStyleWithColumns(7))); 7812 EXPECT_EQ("\"\\uff01\"\n" 7813 "\"test\"", 7814 format("\"\\uff01test\"", getLLVMStyleWithColumns(8))); 7815 EXPECT_EQ("\"\\Uff01ff02\"", 7816 format("\"\\Uff01ff02\"", getLLVMStyleWithColumns(11))); 7817 EXPECT_EQ("\"\\x000000000001\"\n" 7818 "\"next\"", 7819 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(16))); 7820 EXPECT_EQ("\"\\x000000000001next\"", 7821 format("\"\\x000000000001next\"", getLLVMStyleWithColumns(15))); 7822 EXPECT_EQ("\"\\x000000000001\"", 7823 format("\"\\x000000000001\"", getLLVMStyleWithColumns(7))); 7824 EXPECT_EQ("\"test\"\n" 7825 "\"\\000000\"\n" 7826 "\"000001\"", 7827 format("\"test\\000000000001\"", getLLVMStyleWithColumns(9))); 7828 EXPECT_EQ("\"test\\000\"\n" 7829 "\"00000000\"\n" 7830 "\"1\"", 7831 format("\"test\\000000000001\"", getLLVMStyleWithColumns(10))); 7832 } 7833 7834 TEST_F(FormatTest, DoNotCreateUnreasonableUnwrappedLines) { 7835 verifyFormat("void f() {\n" 7836 " return g() {}\n" 7837 " void h() {}"); 7838 verifyFormat("int a[] = {void forgot_closing_brace(){f();\n" 7839 "g();\n" 7840 "}"); 7841 } 7842 7843 TEST_F(FormatTest, DoNotPrematurelyEndUnwrappedLineForReturnStatements) { 7844 verifyFormat( 7845 "void f() { return C{param1, param2}.SomeCall(param1, param2); }"); 7846 } 7847 7848 TEST_F(FormatTest, FormatsClosingBracesInEmptyNestedBlocks) { 7849 verifyFormat("class X {\n" 7850 " void f() {\n" 7851 " }\n" 7852 "};", 7853 getLLVMStyleWithColumns(12)); 7854 } 7855 7856 TEST_F(FormatTest, ConfigurableIndentWidth) { 7857 FormatStyle EightIndent = getLLVMStyleWithColumns(18); 7858 EightIndent.IndentWidth = 8; 7859 EightIndent.ContinuationIndentWidth = 8; 7860 verifyFormat("void f() {\n" 7861 " someFunction();\n" 7862 " if (true) {\n" 7863 " f();\n" 7864 " }\n" 7865 "}", 7866 EightIndent); 7867 verifyFormat("class X {\n" 7868 " void f() {\n" 7869 " }\n" 7870 "};", 7871 EightIndent); 7872 verifyFormat("int x[] = {\n" 7873 " call(),\n" 7874 " call()};", 7875 EightIndent); 7876 } 7877 7878 TEST_F(FormatTest, ConfigurableFunctionDeclarationIndentAfterType) { 7879 verifyFormat("double\n" 7880 "f();", 7881 getLLVMStyleWithColumns(8)); 7882 } 7883 7884 TEST_F(FormatTest, ConfigurableUseOfTab) { 7885 FormatStyle Tab = getLLVMStyleWithColumns(42); 7886 Tab.IndentWidth = 8; 7887 Tab.UseTab = FormatStyle::UT_Always; 7888 Tab.AlignEscapedNewlinesLeft = true; 7889 7890 EXPECT_EQ("if (aaaaaaaa && // q\n" 7891 " bb)\t\t// w\n" 7892 "\t;", 7893 format("if (aaaaaaaa &&// q\n" 7894 "bb)// w\n" 7895 ";", 7896 Tab)); 7897 EXPECT_EQ("if (aaa && bbb) // w\n" 7898 "\t;", 7899 format("if(aaa&&bbb)// w\n" 7900 ";", 7901 Tab)); 7902 7903 verifyFormat("class X {\n" 7904 "\tvoid f() {\n" 7905 "\t\tsomeFunction(parameter1,\n" 7906 "\t\t\t parameter2);\n" 7907 "\t}\n" 7908 "};", 7909 Tab); 7910 verifyFormat("#define A \\\n" 7911 "\tvoid f() { \\\n" 7912 "\t\tsomeFunction( \\\n" 7913 "\t\t parameter1, \\\n" 7914 "\t\t parameter2); \\\n" 7915 "\t}", 7916 Tab); 7917 EXPECT_EQ("void f() {\n" 7918 "\tf();\n" 7919 "\tg();\n" 7920 "}", 7921 format("void f() {\n" 7922 "\tf();\n" 7923 "\tg();\n" 7924 "}", 7925 0, 0, Tab)); 7926 EXPECT_EQ("void f() {\n" 7927 "\tf();\n" 7928 "\tg();\n" 7929 "}", 7930 format("void f() {\n" 7931 "\tf();\n" 7932 "\tg();\n" 7933 "}", 7934 16, 0, Tab)); 7935 EXPECT_EQ("void f() {\n" 7936 " \tf();\n" 7937 "\tg();\n" 7938 "}", 7939 format("void f() {\n" 7940 " \tf();\n" 7941 " \tg();\n" 7942 "}", 7943 21, 0, Tab)); 7944 7945 Tab.TabWidth = 4; 7946 Tab.IndentWidth = 8; 7947 verifyFormat("class TabWidth4Indent8 {\n" 7948 "\t\tvoid f() {\n" 7949 "\t\t\t\tsomeFunction(parameter1,\n" 7950 "\t\t\t\t\t\t\t parameter2);\n" 7951 "\t\t}\n" 7952 "};", 7953 Tab); 7954 7955 Tab.TabWidth = 4; 7956 Tab.IndentWidth = 4; 7957 verifyFormat("class TabWidth4Indent4 {\n" 7958 "\tvoid f() {\n" 7959 "\t\tsomeFunction(parameter1,\n" 7960 "\t\t\t\t\t parameter2);\n" 7961 "\t}\n" 7962 "};", 7963 Tab); 7964 7965 Tab.TabWidth = 8; 7966 Tab.IndentWidth = 4; 7967 verifyFormat("class TabWidth8Indent4 {\n" 7968 " void f() {\n" 7969 "\tsomeFunction(parameter1,\n" 7970 "\t\t parameter2);\n" 7971 " }\n" 7972 "};", 7973 Tab); 7974 7975 Tab.TabWidth = 8; 7976 Tab.IndentWidth = 8; 7977 EXPECT_EQ("/*\n" 7978 "\t a\t\tcomment\n" 7979 "\t in multiple lines\n" 7980 " */", 7981 format(" /*\t \t \n" 7982 " \t \t a\t\tcomment\t \t\n" 7983 " \t \t in multiple lines\t\n" 7984 " \t */", 7985 Tab)); 7986 7987 Tab.UseTab = FormatStyle::UT_ForIndentation; 7988 verifyFormat("{\n" 7989 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7990 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7991 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7992 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7993 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7994 "\taaaaaaaaaaaaaaaaaaaaaaaaaaaa();\n" 7995 "};", 7996 Tab); 7997 verifyFormat("enum A {\n" 7998 "\ta1, // Force multiple lines\n" 7999 "\ta2,\n" 8000 "\ta3\n" 8001 "};", 8002 Tab); 8003 EXPECT_EQ("if (aaaaaaaa && // q\n" 8004 " bb) // w\n" 8005 "\t;", 8006 format("if (aaaaaaaa &&// q\n" 8007 "bb)// w\n" 8008 ";", 8009 Tab)); 8010 verifyFormat("class X {\n" 8011 "\tvoid f() {\n" 8012 "\t\tsomeFunction(parameter1,\n" 8013 "\t\t parameter2);\n" 8014 "\t}\n" 8015 "};", 8016 Tab); 8017 verifyFormat("{\n" 8018 "\tQ({\n" 8019 "\t\tint a;\n" 8020 "\t\tsomeFunction(aaaaaaaa,\n" 8021 "\t\t bbbbbbb);\n" 8022 "\t}, p);\n" 8023 "}", 8024 Tab); 8025 EXPECT_EQ("{\n" 8026 "\t/* aaaa\n" 8027 "\t bbbb */\n" 8028 "}", 8029 format("{\n" 8030 "/* aaaa\n" 8031 " bbbb */\n" 8032 "}", 8033 Tab)); 8034 EXPECT_EQ("{\n" 8035 "\t/*\n" 8036 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8037 "\t bbbbbbbbbbbbb\n" 8038 "\t*/\n" 8039 "}", 8040 format("{\n" 8041 "/*\n" 8042 " aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8043 "*/\n" 8044 "}", 8045 Tab)); 8046 EXPECT_EQ("{\n" 8047 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8048 "\t// bbbbbbbbbbbbb\n" 8049 "}", 8050 format("{\n" 8051 "\t// aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8052 "}", 8053 Tab)); 8054 EXPECT_EQ("{\n" 8055 "\t/*\n" 8056 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa\n" 8057 "\t bbbbbbbbbbbbb\n" 8058 "\t*/\n" 8059 "}", 8060 format("{\n" 8061 "\t/*\n" 8062 "\t aaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbb\n" 8063 "\t*/\n" 8064 "}", 8065 Tab)); 8066 EXPECT_EQ("{\n" 8067 "\t/*\n" 8068 "\n" 8069 "\t*/\n" 8070 "}", 8071 format("{\n" 8072 "\t/*\n" 8073 "\n" 8074 "\t*/\n" 8075 "}", 8076 Tab)); 8077 EXPECT_EQ("{\n" 8078 "\t/*\n" 8079 " asdf\n" 8080 "\t*/\n" 8081 "}", 8082 format("{\n" 8083 "\t/*\n" 8084 " asdf\n" 8085 "\t*/\n" 8086 "}", 8087 Tab)); 8088 8089 Tab.UseTab = FormatStyle::UT_Never; 8090 EXPECT_EQ("/*\n" 8091 " a\t\tcomment\n" 8092 " in multiple lines\n" 8093 " */", 8094 format(" /*\t \t \n" 8095 " \t \t a\t\tcomment\t \t\n" 8096 " \t \t in multiple lines\t\n" 8097 " \t */", 8098 Tab)); 8099 EXPECT_EQ("/* some\n" 8100 " comment */", 8101 format(" \t \t /* some\n" 8102 " \t \t comment */", 8103 Tab)); 8104 EXPECT_EQ("int a; /* some\n" 8105 " comment */", 8106 format(" \t \t int a; /* some\n" 8107 " \t \t comment */", 8108 Tab)); 8109 8110 EXPECT_EQ("int a; /* some\n" 8111 "comment */", 8112 format(" \t \t int\ta; /* some\n" 8113 " \t \t comment */", 8114 Tab)); 8115 EXPECT_EQ("f(\"\t\t\"); /* some\n" 8116 " comment */", 8117 format(" \t \t f(\"\t\t\"); /* some\n" 8118 " \t \t comment */", 8119 Tab)); 8120 EXPECT_EQ("{\n" 8121 " /*\n" 8122 " * Comment\n" 8123 " */\n" 8124 " int i;\n" 8125 "}", 8126 format("{\n" 8127 "\t/*\n" 8128 "\t * Comment\n" 8129 "\t */\n" 8130 "\t int i;\n" 8131 "}")); 8132 } 8133 8134 TEST_F(FormatTest, CalculatesOriginalColumn) { 8135 EXPECT_EQ("\"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8136 "q\"; /* some\n" 8137 " comment */", 8138 format(" \"qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8139 "q\"; /* some\n" 8140 " comment */", 8141 getLLVMStyle())); 8142 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 8143 "/* some\n" 8144 " comment */", 8145 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\n" 8146 " /* some\n" 8147 " comment */", 8148 getLLVMStyle())); 8149 EXPECT_EQ("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8150 "qqq\n" 8151 "/* some\n" 8152 " comment */", 8153 format("// qqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8154 "qqq\n" 8155 " /* some\n" 8156 " comment */", 8157 getLLVMStyle())); 8158 EXPECT_EQ("inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8159 "wwww; /* some\n" 8160 " comment */", 8161 format(" inttt qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq\\\n" 8162 "wwww; /* some\n" 8163 " comment */", 8164 getLLVMStyle())); 8165 } 8166 8167 TEST_F(FormatTest, ConfigurableSpaceBeforeParens) { 8168 FormatStyle NoSpace = getLLVMStyle(); 8169 NoSpace.SpaceBeforeParens = FormatStyle::SBPO_Never; 8170 8171 verifyFormat("while(true)\n" 8172 " continue;", NoSpace); 8173 verifyFormat("for(;;)\n" 8174 " continue;", NoSpace); 8175 verifyFormat("if(true)\n" 8176 " f();\n" 8177 "else if(true)\n" 8178 " f();", NoSpace); 8179 verifyFormat("do {\n" 8180 " do_something();\n" 8181 "} while(something());", NoSpace); 8182 verifyFormat("switch(x) {\n" 8183 "default:\n" 8184 " break;\n" 8185 "}", NoSpace); 8186 verifyFormat("auto i = std::make_unique<int>(5);", NoSpace); 8187 verifyFormat("size_t x = sizeof(x);", NoSpace); 8188 verifyFormat("auto f(int x) -> decltype(x);", NoSpace); 8189 verifyFormat("int f(T x) noexcept(x.create());", NoSpace); 8190 verifyFormat("alignas(128) char a[128];", NoSpace); 8191 verifyFormat("size_t x = alignof(MyType);", NoSpace); 8192 verifyFormat("static_assert(sizeof(char) == 1, \"Impossible!\");", NoSpace); 8193 verifyFormat("int f() throw(Deprecated);", NoSpace); 8194 8195 FormatStyle Space = getLLVMStyle(); 8196 Space.SpaceBeforeParens = FormatStyle::SBPO_Always; 8197 8198 verifyFormat("int f ();", Space); 8199 verifyFormat("void f (int a, T b) {\n" 8200 " while (true)\n" 8201 " continue;\n" 8202 "}", 8203 Space); 8204 verifyFormat("if (true)\n" 8205 " f ();\n" 8206 "else if (true)\n" 8207 " f ();", 8208 Space); 8209 verifyFormat("do {\n" 8210 " do_something ();\n" 8211 "} while (something ());", 8212 Space); 8213 verifyFormat("switch (x) {\n" 8214 "default:\n" 8215 " break;\n" 8216 "}", 8217 Space); 8218 verifyFormat("A::A () : a (1) {}", Space); 8219 verifyFormat("void f () __attribute__ ((asdf));", Space); 8220 verifyFormat("*(&a + 1);\n" 8221 "&((&a)[1]);\n" 8222 "a[(b + c) * d];\n" 8223 "(((a + 1) * 2) + 3) * 4;", 8224 Space); 8225 verifyFormat("#define A(x) x", Space); 8226 verifyFormat("#define A (x) x", Space); 8227 verifyFormat("#if defined(x)\n" 8228 "#endif", 8229 Space); 8230 verifyFormat("auto i = std::make_unique<int> (5);", Space); 8231 verifyFormat("size_t x = sizeof (x);", Space); 8232 verifyFormat("auto f (int x) -> decltype (x);", Space); 8233 verifyFormat("int f (T x) noexcept (x.create ());", Space); 8234 verifyFormat("alignas (128) char a[128];", Space); 8235 verifyFormat("size_t x = alignof (MyType);", Space); 8236 verifyFormat("static_assert (sizeof (char) == 1, \"Impossible!\");", Space); 8237 verifyFormat("int f () throw (Deprecated);", Space); 8238 } 8239 8240 TEST_F(FormatTest, ConfigurableSpacesInParentheses) { 8241 FormatStyle Spaces = getLLVMStyle(); 8242 8243 Spaces.SpacesInParentheses = true; 8244 verifyFormat("call( x, y, z );", Spaces); 8245 verifyFormat("call();", Spaces); 8246 verifyFormat("std::function<void( int, int )> callback;", Spaces); 8247 verifyFormat("while ( (bool)1 )\n" 8248 " continue;", Spaces); 8249 verifyFormat("for ( ;; )\n" 8250 " continue;", Spaces); 8251 verifyFormat("if ( true )\n" 8252 " f();\n" 8253 "else if ( true )\n" 8254 " f();", Spaces); 8255 verifyFormat("do {\n" 8256 " do_something( (int)i );\n" 8257 "} while ( something() );", Spaces); 8258 verifyFormat("switch ( x ) {\n" 8259 "default:\n" 8260 " break;\n" 8261 "}", Spaces); 8262 8263 Spaces.SpacesInParentheses = false; 8264 Spaces.SpacesInCStyleCastParentheses = true; 8265 verifyFormat("Type *A = ( Type * )P;", Spaces); 8266 verifyFormat("Type *A = ( vector<Type *, int *> )P;", Spaces); 8267 verifyFormat("x = ( int32 )y;", Spaces); 8268 verifyFormat("int a = ( int )(2.0f);", Spaces); 8269 verifyFormat("#define AA(X) sizeof((( X * )NULL)->a)", Spaces); 8270 verifyFormat("my_int a = ( my_int )sizeof(int);", Spaces); 8271 verifyFormat("#define x (( int )-1)", Spaces); 8272 8273 // Run the first set of tests again with: 8274 Spaces.SpacesInParentheses = false, 8275 Spaces.SpaceInEmptyParentheses = true; 8276 Spaces.SpacesInCStyleCastParentheses = true; 8277 verifyFormat("call(x, y, z);", Spaces); 8278 verifyFormat("call( );", Spaces); 8279 verifyFormat("std::function<void(int, int)> callback;", Spaces); 8280 verifyFormat("while (( bool )1)\n" 8281 " continue;", Spaces); 8282 verifyFormat("for (;;)\n" 8283 " continue;", Spaces); 8284 verifyFormat("if (true)\n" 8285 " f( );\n" 8286 "else if (true)\n" 8287 " f( );", Spaces); 8288 verifyFormat("do {\n" 8289 " do_something(( int )i);\n" 8290 "} while (something( ));", Spaces); 8291 verifyFormat("switch (x) {\n" 8292 "default:\n" 8293 " break;\n" 8294 "}", Spaces); 8295 8296 // Run the first set of tests again with: 8297 Spaces.SpaceAfterCStyleCast = true; 8298 verifyFormat("call(x, y, z);", Spaces); 8299 verifyFormat("call( );", Spaces); 8300 verifyFormat("std::function<void(int, int)> callback;", Spaces); 8301 verifyFormat("while (( bool ) 1)\n" 8302 " continue;", 8303 Spaces); 8304 verifyFormat("for (;;)\n" 8305 " continue;", 8306 Spaces); 8307 verifyFormat("if (true)\n" 8308 " f( );\n" 8309 "else if (true)\n" 8310 " f( );", 8311 Spaces); 8312 verifyFormat("do {\n" 8313 " do_something(( int ) i);\n" 8314 "} while (something( ));", 8315 Spaces); 8316 verifyFormat("switch (x) {\n" 8317 "default:\n" 8318 " break;\n" 8319 "}", 8320 Spaces); 8321 8322 // Run subset of tests again with: 8323 Spaces.SpacesInCStyleCastParentheses = false; 8324 Spaces.SpaceAfterCStyleCast = true; 8325 verifyFormat("while ((bool) 1)\n" 8326 " continue;", 8327 Spaces); 8328 verifyFormat("do {\n" 8329 " do_something((int) i);\n" 8330 "} while (something( ));", 8331 Spaces); 8332 } 8333 8334 TEST_F(FormatTest, ConfigurableSpacesInSquareBrackets) { 8335 verifyFormat("int a[5];"); 8336 verifyFormat("a[3] += 42;"); 8337 8338 FormatStyle Spaces = getLLVMStyle(); 8339 Spaces.SpacesInSquareBrackets = true; 8340 // Lambdas unchanged. 8341 verifyFormat("int c = []() -> int { return 2; }();\n", Spaces); 8342 verifyFormat("return [i, args...] {};", Spaces); 8343 8344 // Not lambdas. 8345 verifyFormat("int a[ 5 ];", Spaces); 8346 verifyFormat("a[ 3 ] += 42;", Spaces); 8347 verifyFormat("constexpr char hello[]{\"hello\"};", Spaces); 8348 verifyFormat("double &operator[](int i) { return 0; }\n" 8349 "int i;", 8350 Spaces); 8351 verifyFormat("std::unique_ptr<int[]> foo() {}", Spaces); 8352 verifyFormat("int i = a[ a ][ a ]->f();", Spaces); 8353 verifyFormat("int i = (*b)[ a ]->f();", Spaces); 8354 } 8355 8356 TEST_F(FormatTest, ConfigurableSpaceBeforeAssignmentOperators) { 8357 verifyFormat("int a = 5;"); 8358 verifyFormat("a += 42;"); 8359 verifyFormat("a or_eq 8;"); 8360 8361 FormatStyle Spaces = getLLVMStyle(); 8362 Spaces.SpaceBeforeAssignmentOperators = false; 8363 verifyFormat("int a= 5;", Spaces); 8364 verifyFormat("a+= 42;", Spaces); 8365 verifyFormat("a or_eq 8;", Spaces); 8366 } 8367 8368 TEST_F(FormatTest, LinuxBraceBreaking) { 8369 FormatStyle LinuxBraceStyle = getLLVMStyle(); 8370 LinuxBraceStyle.BreakBeforeBraces = FormatStyle::BS_Linux; 8371 verifyFormat("namespace a\n" 8372 "{\n" 8373 "class A\n" 8374 "{\n" 8375 " void f()\n" 8376 " {\n" 8377 " if (true) {\n" 8378 " a();\n" 8379 " b();\n" 8380 " }\n" 8381 " }\n" 8382 " void g() { return; }\n" 8383 "};\n" 8384 "struct B {\n" 8385 " int x;\n" 8386 "};\n" 8387 "}\n", 8388 LinuxBraceStyle); 8389 verifyFormat("enum X {\n" 8390 " Y = 0,\n" 8391 "}\n", 8392 LinuxBraceStyle); 8393 verifyFormat("struct S {\n" 8394 " int Type;\n" 8395 " union {\n" 8396 " int x;\n" 8397 " double y;\n" 8398 " } Value;\n" 8399 " class C\n" 8400 " {\n" 8401 " MyFavoriteType Value;\n" 8402 " } Class;\n" 8403 "}\n", 8404 LinuxBraceStyle); 8405 } 8406 8407 TEST_F(FormatTest, StroustrupBraceBreaking) { 8408 FormatStyle StroustrupBraceStyle = getLLVMStyle(); 8409 StroustrupBraceStyle.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 8410 verifyFormat("namespace a {\n" 8411 "class A {\n" 8412 " void f()\n" 8413 " {\n" 8414 " if (true) {\n" 8415 " a();\n" 8416 " b();\n" 8417 " }\n" 8418 " }\n" 8419 " void g() { return; }\n" 8420 "};\n" 8421 "struct B {\n" 8422 " int x;\n" 8423 "};\n" 8424 "}\n", 8425 StroustrupBraceStyle); 8426 8427 verifyFormat("void foo()\n" 8428 "{\n" 8429 " if (a) {\n" 8430 " a();\n" 8431 " }\n" 8432 " else {\n" 8433 " b();\n" 8434 " }\n" 8435 "}\n", 8436 StroustrupBraceStyle); 8437 8438 verifyFormat("#ifdef _DEBUG\n" 8439 "int foo(int i = 0)\n" 8440 "#else\n" 8441 "int foo(int i = 5)\n" 8442 "#endif\n" 8443 "{\n" 8444 " return i;\n" 8445 "}", 8446 StroustrupBraceStyle); 8447 8448 verifyFormat("void foo() {}\n" 8449 "void bar()\n" 8450 "#ifdef _DEBUG\n" 8451 "{\n" 8452 " foo();\n" 8453 "}\n" 8454 "#else\n" 8455 "{\n" 8456 "}\n" 8457 "#endif", 8458 StroustrupBraceStyle); 8459 8460 verifyFormat("void foobar() { int i = 5; }\n" 8461 "#ifdef _DEBUG\n" 8462 "void bar() {}\n" 8463 "#else\n" 8464 "void bar() { foobar(); }\n" 8465 "#endif", 8466 StroustrupBraceStyle); 8467 } 8468 8469 TEST_F(FormatTest, AllmanBraceBreaking) { 8470 FormatStyle AllmanBraceStyle = getLLVMStyle(); 8471 AllmanBraceStyle.BreakBeforeBraces = FormatStyle::BS_Allman; 8472 verifyFormat("namespace a\n" 8473 "{\n" 8474 "class A\n" 8475 "{\n" 8476 " void f()\n" 8477 " {\n" 8478 " if (true)\n" 8479 " {\n" 8480 " a();\n" 8481 " b();\n" 8482 " }\n" 8483 " }\n" 8484 " void g() { return; }\n" 8485 "};\n" 8486 "struct B\n" 8487 "{\n" 8488 " int x;\n" 8489 "};\n" 8490 "}", 8491 AllmanBraceStyle); 8492 8493 verifyFormat("void f()\n" 8494 "{\n" 8495 " if (true)\n" 8496 " {\n" 8497 " a();\n" 8498 " }\n" 8499 " else if (false)\n" 8500 " {\n" 8501 " b();\n" 8502 " }\n" 8503 " else\n" 8504 " {\n" 8505 " c();\n" 8506 " }\n" 8507 "}\n", 8508 AllmanBraceStyle); 8509 8510 verifyFormat("void f()\n" 8511 "{\n" 8512 " for (int i = 0; i < 10; ++i)\n" 8513 " {\n" 8514 " a();\n" 8515 " }\n" 8516 " while (false)\n" 8517 " {\n" 8518 " b();\n" 8519 " }\n" 8520 " do\n" 8521 " {\n" 8522 " c();\n" 8523 " } while (false)\n" 8524 "}\n", 8525 AllmanBraceStyle); 8526 8527 verifyFormat("void f(int a)\n" 8528 "{\n" 8529 " switch (a)\n" 8530 " {\n" 8531 " case 0:\n" 8532 " break;\n" 8533 " case 1:\n" 8534 " {\n" 8535 " break;\n" 8536 " }\n" 8537 " case 2:\n" 8538 " {\n" 8539 " }\n" 8540 " break;\n" 8541 " default:\n" 8542 " break;\n" 8543 " }\n" 8544 "}\n", 8545 AllmanBraceStyle); 8546 8547 verifyFormat("enum X\n" 8548 "{\n" 8549 " Y = 0,\n" 8550 "}\n", 8551 AllmanBraceStyle); 8552 verifyFormat("enum X\n" 8553 "{\n" 8554 " Y = 0\n" 8555 "}\n", 8556 AllmanBraceStyle); 8557 8558 verifyFormat("@interface BSApplicationController ()\n" 8559 "{\n" 8560 "@private\n" 8561 " id _extraIvar;\n" 8562 "}\n" 8563 "@end\n", 8564 AllmanBraceStyle); 8565 8566 verifyFormat("#ifdef _DEBUG\n" 8567 "int foo(int i = 0)\n" 8568 "#else\n" 8569 "int foo(int i = 5)\n" 8570 "#endif\n" 8571 "{\n" 8572 " return i;\n" 8573 "}", 8574 AllmanBraceStyle); 8575 8576 verifyFormat("void foo() {}\n" 8577 "void bar()\n" 8578 "#ifdef _DEBUG\n" 8579 "{\n" 8580 " foo();\n" 8581 "}\n" 8582 "#else\n" 8583 "{\n" 8584 "}\n" 8585 "#endif", 8586 AllmanBraceStyle); 8587 8588 verifyFormat("void foobar() { int i = 5; }\n" 8589 "#ifdef _DEBUG\n" 8590 "void bar() {}\n" 8591 "#else\n" 8592 "void bar() { foobar(); }\n" 8593 "#endif", 8594 AllmanBraceStyle); 8595 8596 // This shouldn't affect ObjC blocks.. 8597 verifyFormat("[self doSomeThingWithACompletionHandler:^{\n" 8598 " // ...\n" 8599 " int i;\n" 8600 "}];", 8601 AllmanBraceStyle); 8602 verifyFormat("void (^block)(void) = ^{\n" 8603 " // ...\n" 8604 " int i;\n" 8605 "};", 8606 AllmanBraceStyle); 8607 // .. or dict literals. 8608 verifyFormat("void f()\n" 8609 "{\n" 8610 " [object someMethod:@{ @\"a\" : @\"b\" }];\n" 8611 "}", 8612 AllmanBraceStyle); 8613 verifyFormat("int f()\n" 8614 "{ // comment\n" 8615 " return 42;\n" 8616 "}", 8617 AllmanBraceStyle); 8618 8619 AllmanBraceStyle.ColumnLimit = 19; 8620 verifyFormat("void f() { int i; }", AllmanBraceStyle); 8621 AllmanBraceStyle.ColumnLimit = 18; 8622 verifyFormat("void f()\n" 8623 "{\n" 8624 " int i;\n" 8625 "}", 8626 AllmanBraceStyle); 8627 AllmanBraceStyle.ColumnLimit = 80; 8628 8629 FormatStyle BreakBeforeBraceShortIfs = AllmanBraceStyle; 8630 BreakBeforeBraceShortIfs.AllowShortIfStatementsOnASingleLine = true; 8631 BreakBeforeBraceShortIfs.AllowShortLoopsOnASingleLine = true; 8632 verifyFormat("void f(bool b)\n" 8633 "{\n" 8634 " if (b)\n" 8635 " {\n" 8636 " return;\n" 8637 " }\n" 8638 "}\n", 8639 BreakBeforeBraceShortIfs); 8640 verifyFormat("void f(bool b)\n" 8641 "{\n" 8642 " if (b) return;\n" 8643 "}\n", 8644 BreakBeforeBraceShortIfs); 8645 verifyFormat("void f(bool b)\n" 8646 "{\n" 8647 " while (b)\n" 8648 " {\n" 8649 " return;\n" 8650 " }\n" 8651 "}\n", 8652 BreakBeforeBraceShortIfs); 8653 } 8654 8655 TEST_F(FormatTest, GNUBraceBreaking) { 8656 FormatStyle GNUBraceStyle = getLLVMStyle(); 8657 GNUBraceStyle.BreakBeforeBraces = FormatStyle::BS_GNU; 8658 verifyFormat("namespace a\n" 8659 "{\n" 8660 "class A\n" 8661 "{\n" 8662 " void f()\n" 8663 " {\n" 8664 " int a;\n" 8665 " {\n" 8666 " int b;\n" 8667 " }\n" 8668 " if (true)\n" 8669 " {\n" 8670 " a();\n" 8671 " b();\n" 8672 " }\n" 8673 " }\n" 8674 " void g() { return; }\n" 8675 "}\n" 8676 "}", 8677 GNUBraceStyle); 8678 8679 verifyFormat("void f()\n" 8680 "{\n" 8681 " if (true)\n" 8682 " {\n" 8683 " a();\n" 8684 " }\n" 8685 " else if (false)\n" 8686 " {\n" 8687 " b();\n" 8688 " }\n" 8689 " else\n" 8690 " {\n" 8691 " c();\n" 8692 " }\n" 8693 "}\n", 8694 GNUBraceStyle); 8695 8696 verifyFormat("void f()\n" 8697 "{\n" 8698 " for (int i = 0; i < 10; ++i)\n" 8699 " {\n" 8700 " a();\n" 8701 " }\n" 8702 " while (false)\n" 8703 " {\n" 8704 " b();\n" 8705 " }\n" 8706 " do\n" 8707 " {\n" 8708 " c();\n" 8709 " }\n" 8710 " while (false);\n" 8711 "}\n", 8712 GNUBraceStyle); 8713 8714 verifyFormat("void f(int a)\n" 8715 "{\n" 8716 " switch (a)\n" 8717 " {\n" 8718 " case 0:\n" 8719 " break;\n" 8720 " case 1:\n" 8721 " {\n" 8722 " break;\n" 8723 " }\n" 8724 " case 2:\n" 8725 " {\n" 8726 " }\n" 8727 " break;\n" 8728 " default:\n" 8729 " break;\n" 8730 " }\n" 8731 "}\n", 8732 GNUBraceStyle); 8733 8734 verifyFormat("enum X\n" 8735 "{\n" 8736 " Y = 0,\n" 8737 "}\n", 8738 GNUBraceStyle); 8739 8740 verifyFormat("@interface BSApplicationController ()\n" 8741 "{\n" 8742 "@private\n" 8743 " id _extraIvar;\n" 8744 "}\n" 8745 "@end\n", 8746 GNUBraceStyle); 8747 8748 verifyFormat("#ifdef _DEBUG\n" 8749 "int foo(int i = 0)\n" 8750 "#else\n" 8751 "int foo(int i = 5)\n" 8752 "#endif\n" 8753 "{\n" 8754 " return i;\n" 8755 "}", 8756 GNUBraceStyle); 8757 8758 verifyFormat("void foo() {}\n" 8759 "void bar()\n" 8760 "#ifdef _DEBUG\n" 8761 "{\n" 8762 " foo();\n" 8763 "}\n" 8764 "#else\n" 8765 "{\n" 8766 "}\n" 8767 "#endif", 8768 GNUBraceStyle); 8769 8770 verifyFormat("void foobar() { int i = 5; }\n" 8771 "#ifdef _DEBUG\n" 8772 "void bar() {}\n" 8773 "#else\n" 8774 "void bar() { foobar(); }\n" 8775 "#endif", 8776 GNUBraceStyle); 8777 } 8778 TEST_F(FormatTest, CatchExceptionReferenceBinding) { 8779 verifyFormat("void f() {\n" 8780 " try {\n" 8781 " } catch (const Exception &e) {\n" 8782 " }\n" 8783 "}\n", 8784 getLLVMStyle()); 8785 } 8786 8787 TEST_F(FormatTest, UnderstandsPragmas) { 8788 verifyFormat("#pragma omp reduction(| : var)"); 8789 verifyFormat("#pragma omp reduction(+ : var)"); 8790 8791 EXPECT_EQ("#pragma mark Any non-hyphenated or hyphenated string " 8792 "(including parentheses).", 8793 format("#pragma mark Any non-hyphenated or hyphenated string " 8794 "(including parentheses).")); 8795 } 8796 8797 #define EXPECT_ALL_STYLES_EQUAL(Styles) \ 8798 for (size_t i = 1; i < Styles.size(); ++i) \ 8799 EXPECT_EQ(Styles[0], Styles[i]) << "Style #" << i << " of " \ 8800 << Styles.size() \ 8801 << " differs from Style #0" 8802 8803 TEST_F(FormatTest, GetsPredefinedStyleByName) { 8804 SmallVector<FormatStyle, 3> Styles; 8805 Styles.resize(3); 8806 8807 Styles[0] = getLLVMStyle(); 8808 EXPECT_TRUE(getPredefinedStyle("LLVM", FormatStyle::LK_Cpp, &Styles[1])); 8809 EXPECT_TRUE(getPredefinedStyle("lLvM", FormatStyle::LK_Cpp, &Styles[2])); 8810 EXPECT_ALL_STYLES_EQUAL(Styles); 8811 8812 Styles[0] = getGoogleStyle(); 8813 EXPECT_TRUE(getPredefinedStyle("Google", FormatStyle::LK_Cpp, &Styles[1])); 8814 EXPECT_TRUE(getPredefinedStyle("gOOgle", FormatStyle::LK_Cpp, &Styles[2])); 8815 EXPECT_ALL_STYLES_EQUAL(Styles); 8816 8817 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 8818 EXPECT_TRUE( 8819 getPredefinedStyle("Google", FormatStyle::LK_JavaScript, &Styles[1])); 8820 EXPECT_TRUE( 8821 getPredefinedStyle("gOOgle", FormatStyle::LK_JavaScript, &Styles[2])); 8822 EXPECT_ALL_STYLES_EQUAL(Styles); 8823 8824 Styles[0] = getChromiumStyle(FormatStyle::LK_Cpp); 8825 EXPECT_TRUE(getPredefinedStyle("Chromium", FormatStyle::LK_Cpp, &Styles[1])); 8826 EXPECT_TRUE(getPredefinedStyle("cHRoMiUM", FormatStyle::LK_Cpp, &Styles[2])); 8827 EXPECT_ALL_STYLES_EQUAL(Styles); 8828 8829 Styles[0] = getMozillaStyle(); 8830 EXPECT_TRUE(getPredefinedStyle("Mozilla", FormatStyle::LK_Cpp, &Styles[1])); 8831 EXPECT_TRUE(getPredefinedStyle("moZILla", FormatStyle::LK_Cpp, &Styles[2])); 8832 EXPECT_ALL_STYLES_EQUAL(Styles); 8833 8834 Styles[0] = getWebKitStyle(); 8835 EXPECT_TRUE(getPredefinedStyle("WebKit", FormatStyle::LK_Cpp, &Styles[1])); 8836 EXPECT_TRUE(getPredefinedStyle("wEbKit", FormatStyle::LK_Cpp, &Styles[2])); 8837 EXPECT_ALL_STYLES_EQUAL(Styles); 8838 8839 Styles[0] = getGNUStyle(); 8840 EXPECT_TRUE(getPredefinedStyle("GNU", FormatStyle::LK_Cpp, &Styles[1])); 8841 EXPECT_TRUE(getPredefinedStyle("gnU", FormatStyle::LK_Cpp, &Styles[2])); 8842 EXPECT_ALL_STYLES_EQUAL(Styles); 8843 8844 EXPECT_FALSE(getPredefinedStyle("qwerty", FormatStyle::LK_Cpp, &Styles[0])); 8845 } 8846 8847 TEST_F(FormatTest, GetsCorrectBasedOnStyle) { 8848 SmallVector<FormatStyle, 8> Styles; 8849 Styles.resize(2); 8850 8851 Styles[0] = getGoogleStyle(); 8852 Styles[1] = getLLVMStyle(); 8853 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 8854 EXPECT_ALL_STYLES_EQUAL(Styles); 8855 8856 Styles.resize(5); 8857 Styles[0] = getGoogleStyle(FormatStyle::LK_JavaScript); 8858 Styles[1] = getLLVMStyle(); 8859 Styles[1].Language = FormatStyle::LK_JavaScript; 8860 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Styles[1]).value()); 8861 8862 Styles[2] = getLLVMStyle(); 8863 Styles[2].Language = FormatStyle::LK_JavaScript; 8864 EXPECT_EQ(0, parseConfiguration("Language: JavaScript\n" 8865 "BasedOnStyle: Google", 8866 &Styles[2]).value()); 8867 8868 Styles[3] = getLLVMStyle(); 8869 Styles[3].Language = FormatStyle::LK_JavaScript; 8870 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google\n" 8871 "Language: JavaScript", 8872 &Styles[3]).value()); 8873 8874 Styles[4] = getLLVMStyle(); 8875 Styles[4].Language = FormatStyle::LK_JavaScript; 8876 EXPECT_EQ(0, parseConfiguration("---\n" 8877 "BasedOnStyle: LLVM\n" 8878 "IndentWidth: 123\n" 8879 "---\n" 8880 "BasedOnStyle: Google\n" 8881 "Language: JavaScript", 8882 &Styles[4]).value()); 8883 EXPECT_ALL_STYLES_EQUAL(Styles); 8884 } 8885 8886 #define CHECK_PARSE_BOOL_FIELD(FIELD, CONFIG_NAME) \ 8887 Style.FIELD = false; \ 8888 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": true", &Style).value()); \ 8889 EXPECT_TRUE(Style.FIELD); \ 8890 EXPECT_EQ(0, parseConfiguration(CONFIG_NAME ": false", &Style).value()); \ 8891 EXPECT_FALSE(Style.FIELD); 8892 8893 #define CHECK_PARSE_BOOL(FIELD) CHECK_PARSE_BOOL_FIELD(FIELD, #FIELD) 8894 8895 #define CHECK_PARSE(TEXT, FIELD, VALUE) \ 8896 EXPECT_NE(VALUE, Style.FIELD); \ 8897 EXPECT_EQ(0, parseConfiguration(TEXT, &Style).value()); \ 8898 EXPECT_EQ(VALUE, Style.FIELD) 8899 8900 TEST_F(FormatTest, ParsesConfigurationBools) { 8901 FormatStyle Style = {}; 8902 Style.Language = FormatStyle::LK_Cpp; 8903 CHECK_PARSE_BOOL(AlignAfterOpenBracket); 8904 CHECK_PARSE_BOOL(AlignEscapedNewlinesLeft); 8905 CHECK_PARSE_BOOL(AlignOperands); 8906 CHECK_PARSE_BOOL(AlignTrailingComments); 8907 CHECK_PARSE_BOOL(AllowAllParametersOfDeclarationOnNextLine); 8908 CHECK_PARSE_BOOL(AllowShortBlocksOnASingleLine); 8909 CHECK_PARSE_BOOL(AllowShortCaseLabelsOnASingleLine); 8910 CHECK_PARSE_BOOL(AllowShortIfStatementsOnASingleLine); 8911 CHECK_PARSE_BOOL(AllowShortLoopsOnASingleLine); 8912 CHECK_PARSE_BOOL(AlwaysBreakAfterDefinitionReturnType); 8913 CHECK_PARSE_BOOL(AlwaysBreakTemplateDeclarations); 8914 CHECK_PARSE_BOOL(BinPackParameters); 8915 CHECK_PARSE_BOOL(BinPackArguments); 8916 CHECK_PARSE_BOOL(BreakBeforeTernaryOperators); 8917 CHECK_PARSE_BOOL(BreakConstructorInitializersBeforeComma); 8918 CHECK_PARSE_BOOL(ConstructorInitializerAllOnOneLineOrOnePerLine); 8919 CHECK_PARSE_BOOL(DerivePointerAlignment); 8920 CHECK_PARSE_BOOL_FIELD(DerivePointerAlignment, "DerivePointerBinding"); 8921 CHECK_PARSE_BOOL(IndentCaseLabels); 8922 CHECK_PARSE_BOOL(IndentWrappedFunctionNames); 8923 CHECK_PARSE_BOOL(KeepEmptyLinesAtTheStartOfBlocks); 8924 CHECK_PARSE_BOOL(ObjCSpaceAfterProperty); 8925 CHECK_PARSE_BOOL(ObjCSpaceBeforeProtocolList); 8926 CHECK_PARSE_BOOL(Cpp11BracedListStyle); 8927 CHECK_PARSE_BOOL(SpacesInParentheses); 8928 CHECK_PARSE_BOOL(SpacesInSquareBrackets); 8929 CHECK_PARSE_BOOL(SpacesInAngles); 8930 CHECK_PARSE_BOOL(SpaceInEmptyParentheses); 8931 CHECK_PARSE_BOOL(SpacesInContainerLiterals); 8932 CHECK_PARSE_BOOL(SpacesInCStyleCastParentheses); 8933 CHECK_PARSE_BOOL(SpaceAfterCStyleCast); 8934 CHECK_PARSE_BOOL(SpaceBeforeAssignmentOperators); 8935 } 8936 8937 #undef CHECK_PARSE_BOOL 8938 8939 TEST_F(FormatTest, ParsesConfiguration) { 8940 FormatStyle Style = {}; 8941 Style.Language = FormatStyle::LK_Cpp; 8942 CHECK_PARSE("AccessModifierOffset: -1234", AccessModifierOffset, -1234); 8943 CHECK_PARSE("ConstructorInitializerIndentWidth: 1234", 8944 ConstructorInitializerIndentWidth, 1234u); 8945 CHECK_PARSE("ObjCBlockIndentWidth: 1234", ObjCBlockIndentWidth, 1234u); 8946 CHECK_PARSE("ColumnLimit: 1234", ColumnLimit, 1234u); 8947 CHECK_PARSE("MaxEmptyLinesToKeep: 1234", MaxEmptyLinesToKeep, 1234u); 8948 CHECK_PARSE("PenaltyBreakBeforeFirstCallParameter: 1234", 8949 PenaltyBreakBeforeFirstCallParameter, 1234u); 8950 CHECK_PARSE("PenaltyExcessCharacter: 1234", PenaltyExcessCharacter, 1234u); 8951 CHECK_PARSE("PenaltyReturnTypeOnItsOwnLine: 1234", 8952 PenaltyReturnTypeOnItsOwnLine, 1234u); 8953 CHECK_PARSE("SpacesBeforeTrailingComments: 1234", 8954 SpacesBeforeTrailingComments, 1234u); 8955 CHECK_PARSE("IndentWidth: 32", IndentWidth, 32u); 8956 CHECK_PARSE("ContinuationIndentWidth: 11", ContinuationIndentWidth, 11u); 8957 8958 Style.PointerAlignment = FormatStyle::PAS_Middle; 8959 CHECK_PARSE("PointerAlignment: Left", PointerAlignment, 8960 FormatStyle::PAS_Left); 8961 CHECK_PARSE("PointerAlignment: Right", PointerAlignment, 8962 FormatStyle::PAS_Right); 8963 CHECK_PARSE("PointerAlignment: Middle", PointerAlignment, 8964 FormatStyle::PAS_Middle); 8965 // For backward compatibility: 8966 CHECK_PARSE("PointerBindsToType: Left", PointerAlignment, 8967 FormatStyle::PAS_Left); 8968 CHECK_PARSE("PointerBindsToType: Right", PointerAlignment, 8969 FormatStyle::PAS_Right); 8970 CHECK_PARSE("PointerBindsToType: Middle", PointerAlignment, 8971 FormatStyle::PAS_Middle); 8972 8973 Style.Standard = FormatStyle::LS_Auto; 8974 CHECK_PARSE("Standard: Cpp03", Standard, FormatStyle::LS_Cpp03); 8975 CHECK_PARSE("Standard: Cpp11", Standard, FormatStyle::LS_Cpp11); 8976 CHECK_PARSE("Standard: C++03", Standard, FormatStyle::LS_Cpp03); 8977 CHECK_PARSE("Standard: C++11", Standard, FormatStyle::LS_Cpp11); 8978 CHECK_PARSE("Standard: Auto", Standard, FormatStyle::LS_Auto); 8979 8980 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 8981 CHECK_PARSE("BreakBeforeBinaryOperators: NonAssignment", 8982 BreakBeforeBinaryOperators, FormatStyle::BOS_NonAssignment); 8983 CHECK_PARSE("BreakBeforeBinaryOperators: None", BreakBeforeBinaryOperators, 8984 FormatStyle::BOS_None); 8985 CHECK_PARSE("BreakBeforeBinaryOperators: All", BreakBeforeBinaryOperators, 8986 FormatStyle::BOS_All); 8987 // For backward compatibility: 8988 CHECK_PARSE("BreakBeforeBinaryOperators: false", BreakBeforeBinaryOperators, 8989 FormatStyle::BOS_None); 8990 CHECK_PARSE("BreakBeforeBinaryOperators: true", BreakBeforeBinaryOperators, 8991 FormatStyle::BOS_All); 8992 8993 Style.UseTab = FormatStyle::UT_ForIndentation; 8994 CHECK_PARSE("UseTab: Never", UseTab, FormatStyle::UT_Never); 8995 CHECK_PARSE("UseTab: ForIndentation", UseTab, FormatStyle::UT_ForIndentation); 8996 CHECK_PARSE("UseTab: Always", UseTab, FormatStyle::UT_Always); 8997 // For backward compatibility: 8998 CHECK_PARSE("UseTab: false", UseTab, FormatStyle::UT_Never); 8999 CHECK_PARSE("UseTab: true", UseTab, FormatStyle::UT_Always); 9000 9001 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 9002 CHECK_PARSE("AllowShortFunctionsOnASingleLine: None", 9003 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 9004 CHECK_PARSE("AllowShortFunctionsOnASingleLine: Inline", 9005 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Inline); 9006 CHECK_PARSE("AllowShortFunctionsOnASingleLine: Empty", 9007 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_Empty); 9008 CHECK_PARSE("AllowShortFunctionsOnASingleLine: All", 9009 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 9010 // For backward compatibility: 9011 CHECK_PARSE("AllowShortFunctionsOnASingleLine: false", 9012 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_None); 9013 CHECK_PARSE("AllowShortFunctionsOnASingleLine: true", 9014 AllowShortFunctionsOnASingleLine, FormatStyle::SFS_All); 9015 9016 Style.SpaceBeforeParens = FormatStyle::SBPO_Always; 9017 CHECK_PARSE("SpaceBeforeParens: Never", SpaceBeforeParens, 9018 FormatStyle::SBPO_Never); 9019 CHECK_PARSE("SpaceBeforeParens: Always", SpaceBeforeParens, 9020 FormatStyle::SBPO_Always); 9021 CHECK_PARSE("SpaceBeforeParens: ControlStatements", SpaceBeforeParens, 9022 FormatStyle::SBPO_ControlStatements); 9023 // For backward compatibility: 9024 CHECK_PARSE("SpaceAfterControlStatementKeyword: false", SpaceBeforeParens, 9025 FormatStyle::SBPO_Never); 9026 CHECK_PARSE("SpaceAfterControlStatementKeyword: true", SpaceBeforeParens, 9027 FormatStyle::SBPO_ControlStatements); 9028 9029 Style.ColumnLimit = 123; 9030 FormatStyle BaseStyle = getLLVMStyle(); 9031 CHECK_PARSE("BasedOnStyle: LLVM", ColumnLimit, BaseStyle.ColumnLimit); 9032 CHECK_PARSE("BasedOnStyle: LLVM\nColumnLimit: 1234", ColumnLimit, 1234u); 9033 9034 Style.BreakBeforeBraces = FormatStyle::BS_Stroustrup; 9035 CHECK_PARSE("BreakBeforeBraces: Attach", BreakBeforeBraces, 9036 FormatStyle::BS_Attach); 9037 CHECK_PARSE("BreakBeforeBraces: Linux", BreakBeforeBraces, 9038 FormatStyle::BS_Linux); 9039 CHECK_PARSE("BreakBeforeBraces: Stroustrup", BreakBeforeBraces, 9040 FormatStyle::BS_Stroustrup); 9041 CHECK_PARSE("BreakBeforeBraces: Allman", BreakBeforeBraces, 9042 FormatStyle::BS_Allman); 9043 CHECK_PARSE("BreakBeforeBraces: GNU", BreakBeforeBraces, FormatStyle::BS_GNU); 9044 9045 Style.NamespaceIndentation = FormatStyle::NI_All; 9046 CHECK_PARSE("NamespaceIndentation: None", NamespaceIndentation, 9047 FormatStyle::NI_None); 9048 CHECK_PARSE("NamespaceIndentation: Inner", NamespaceIndentation, 9049 FormatStyle::NI_Inner); 9050 CHECK_PARSE("NamespaceIndentation: All", NamespaceIndentation, 9051 FormatStyle::NI_All); 9052 9053 Style.ForEachMacros.clear(); 9054 std::vector<std::string> BoostForeach; 9055 BoostForeach.push_back("BOOST_FOREACH"); 9056 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH]", ForEachMacros, BoostForeach); 9057 std::vector<std::string> BoostAndQForeach; 9058 BoostAndQForeach.push_back("BOOST_FOREACH"); 9059 BoostAndQForeach.push_back("Q_FOREACH"); 9060 CHECK_PARSE("ForEachMacros: [BOOST_FOREACH, Q_FOREACH]", ForEachMacros, 9061 BoostAndQForeach); 9062 } 9063 9064 TEST_F(FormatTest, ParsesConfigurationWithLanguages) { 9065 FormatStyle Style = {}; 9066 Style.Language = FormatStyle::LK_Cpp; 9067 CHECK_PARSE("Language: Cpp\n" 9068 "IndentWidth: 12", 9069 IndentWidth, 12u); 9070 EXPECT_EQ(parseConfiguration("Language: JavaScript\n" 9071 "IndentWidth: 34", 9072 &Style), 9073 ParseError::Unsuitable); 9074 EXPECT_EQ(12u, Style.IndentWidth); 9075 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 9076 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 9077 9078 Style.Language = FormatStyle::LK_JavaScript; 9079 CHECK_PARSE("Language: JavaScript\n" 9080 "IndentWidth: 12", 9081 IndentWidth, 12u); 9082 CHECK_PARSE("IndentWidth: 23", IndentWidth, 23u); 9083 EXPECT_EQ(parseConfiguration("Language: Cpp\n" 9084 "IndentWidth: 34", 9085 &Style), 9086 ParseError::Unsuitable); 9087 EXPECT_EQ(23u, Style.IndentWidth); 9088 CHECK_PARSE("IndentWidth: 56", IndentWidth, 56u); 9089 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 9090 9091 CHECK_PARSE("BasedOnStyle: LLVM\n" 9092 "IndentWidth: 67", 9093 IndentWidth, 67u); 9094 9095 CHECK_PARSE("---\n" 9096 "Language: JavaScript\n" 9097 "IndentWidth: 12\n" 9098 "---\n" 9099 "Language: Cpp\n" 9100 "IndentWidth: 34\n" 9101 "...\n", 9102 IndentWidth, 12u); 9103 9104 Style.Language = FormatStyle::LK_Cpp; 9105 CHECK_PARSE("---\n" 9106 "Language: JavaScript\n" 9107 "IndentWidth: 12\n" 9108 "---\n" 9109 "Language: Cpp\n" 9110 "IndentWidth: 34\n" 9111 "...\n", 9112 IndentWidth, 34u); 9113 CHECK_PARSE("---\n" 9114 "IndentWidth: 78\n" 9115 "---\n" 9116 "Language: JavaScript\n" 9117 "IndentWidth: 56\n" 9118 "...\n", 9119 IndentWidth, 78u); 9120 9121 Style.ColumnLimit = 123; 9122 Style.IndentWidth = 234; 9123 Style.BreakBeforeBraces = FormatStyle::BS_Linux; 9124 Style.TabWidth = 345; 9125 EXPECT_FALSE(parseConfiguration("---\n" 9126 "IndentWidth: 456\n" 9127 "BreakBeforeBraces: Allman\n" 9128 "---\n" 9129 "Language: JavaScript\n" 9130 "IndentWidth: 111\n" 9131 "TabWidth: 111\n" 9132 "---\n" 9133 "Language: Cpp\n" 9134 "BreakBeforeBraces: Stroustrup\n" 9135 "TabWidth: 789\n" 9136 "...\n", 9137 &Style)); 9138 EXPECT_EQ(123u, Style.ColumnLimit); 9139 EXPECT_EQ(456u, Style.IndentWidth); 9140 EXPECT_EQ(FormatStyle::BS_Stroustrup, Style.BreakBeforeBraces); 9141 EXPECT_EQ(789u, Style.TabWidth); 9142 9143 EXPECT_EQ(parseConfiguration("---\n" 9144 "Language: JavaScript\n" 9145 "IndentWidth: 56\n" 9146 "---\n" 9147 "IndentWidth: 78\n" 9148 "...\n", 9149 &Style), 9150 ParseError::Error); 9151 EXPECT_EQ(parseConfiguration("---\n" 9152 "Language: JavaScript\n" 9153 "IndentWidth: 56\n" 9154 "---\n" 9155 "Language: JavaScript\n" 9156 "IndentWidth: 78\n" 9157 "...\n", 9158 &Style), 9159 ParseError::Error); 9160 9161 EXPECT_EQ(FormatStyle::LK_Cpp, Style.Language); 9162 } 9163 9164 #undef CHECK_PARSE 9165 9166 TEST_F(FormatTest, UsesLanguageForBasedOnStyle) { 9167 FormatStyle Style = {}; 9168 Style.Language = FormatStyle::LK_JavaScript; 9169 Style.BreakBeforeTernaryOperators = true; 9170 EXPECT_EQ(0, parseConfiguration("BasedOnStyle: Google", &Style).value()); 9171 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 9172 9173 Style.BreakBeforeTernaryOperators = true; 9174 EXPECT_EQ(0, parseConfiguration("---\n" 9175 "BasedOnStyle: Google\n" 9176 "---\n" 9177 "Language: JavaScript\n" 9178 "IndentWidth: 76\n" 9179 "...\n", &Style).value()); 9180 EXPECT_FALSE(Style.BreakBeforeTernaryOperators); 9181 EXPECT_EQ(76u, Style.IndentWidth); 9182 EXPECT_EQ(FormatStyle::LK_JavaScript, Style.Language); 9183 } 9184 9185 TEST_F(FormatTest, ConfigurationRoundTripTest) { 9186 FormatStyle Style = getLLVMStyle(); 9187 std::string YAML = configurationAsText(Style); 9188 FormatStyle ParsedStyle = {}; 9189 ParsedStyle.Language = FormatStyle::LK_Cpp; 9190 EXPECT_EQ(0, parseConfiguration(YAML, &ParsedStyle).value()); 9191 EXPECT_EQ(Style, ParsedStyle); 9192 } 9193 9194 TEST_F(FormatTest, WorksFor8bitEncodings) { 9195 EXPECT_EQ("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 \"\n" 9196 "\"\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \"\n" 9197 "\"\xe7\xe8\xec\xed\xfe\xfe \"\n" 9198 "\"\xef\xee\xf0\xf3...\"", 9199 format("\"\xce\xe4\xed\xe0\xe6\xe4\xfb \xe2 " 9200 "\xf1\xf2\xf3\xe4\xb8\xed\xf3\xfe \xe7\xe8\xec\xed\xfe\xfe " 9201 "\xef\xee\xf0\xf3...\"", 9202 getLLVMStyleWithColumns(12))); 9203 } 9204 9205 TEST_F(FormatTest, HandlesUTF8BOM) { 9206 EXPECT_EQ("\xef\xbb\xbf", format("\xef\xbb\xbf")); 9207 EXPECT_EQ("\xef\xbb\xbf#include <iostream>", 9208 format("\xef\xbb\xbf#include <iostream>")); 9209 EXPECT_EQ("\xef\xbb\xbf\n#include <iostream>", 9210 format("\xef\xbb\xbf\n#include <iostream>")); 9211 } 9212 9213 // FIXME: Encode Cyrillic and CJK characters below to appease MS compilers. 9214 #if !defined(_MSC_VER) 9215 9216 TEST_F(FormatTest, CountsUTF8CharactersProperly) { 9217 verifyFormat("\" ...\"", 9218 getLLVMStyleWithColumns(35)); 9219 verifyFormat("\" \"", 9220 getLLVMStyleWithColumns(31)); 9221 verifyFormat("// ...", 9222 getLLVMStyleWithColumns(36)); 9223 verifyFormat("// ", 9224 getLLVMStyleWithColumns(32)); 9225 verifyFormat("/* ... */", 9226 getLLVMStyleWithColumns(39)); 9227 verifyFormat("/* */", 9228 getLLVMStyleWithColumns(35)); 9229 } 9230 9231 TEST_F(FormatTest, SplitsUTF8Strings) { 9232 // Non-printable characters' width is currently considered to be the length in 9233 // bytes in UTF8. The characters can be displayed in very different manner 9234 // (zero-width, single width with a substitution glyph, expanded to their code 9235 // (e.g. "<8d>"), so there's no single correct way to handle them. 9236 EXPECT_EQ("\"aaaa\"\n" 9237 "\"\xc2\x8d\";", 9238 format("\"aaaa\xc2\x8d\";", getLLVMStyleWithColumns(10))); 9239 EXPECT_EQ("\"aaaaaaa\"\n" 9240 "\"\xc2\x8d\";", 9241 format("\"aaaaaaa\xc2\x8d\";", getLLVMStyleWithColumns(10))); 9242 EXPECT_EQ( 9243 "\", \"\n" 9244 "\" \"\n" 9245 "\" \"\n" 9246 "\",\"", 9247 format("\", ,\"", 9248 getLLVMStyleWithColumns(13))); 9249 EXPECT_EQ("\" \"\n" 9250 "\" \"\n" 9251 "\" \"\n" 9252 "\"\"", 9253 format("\" \"", 9254 getLLVMStyleWithColumns(11))); 9255 EXPECT_EQ("\"\t \"\n" 9256 "\"\t \"\n" 9257 "\" \t \"\n" 9258 "\"\t \"\n" 9259 "\"\tqq\"", 9260 format("\"\t \t \t \t \tqq\"", 9261 getLLVMStyleWithColumns(11))); 9262 } 9263 9264 9265 TEST_F(FormatTest, HandlesDoubleWidthCharsInMultiLineStrings) { 9266 EXPECT_EQ("const char *sssss =\n" 9267 " \"\\\n" 9268 " \";", 9269 format("const char *sssss = \"\\\n" 9270 " \";", 9271 getLLVMStyleWithColumns(30))); 9272 } 9273 9274 TEST_F(FormatTest, SplitsUTF8LineComments) { 9275 EXPECT_EQ("// aaaa\xc2\x8d", 9276 format("// aaaa\xc2\x8d", getLLVMStyleWithColumns(10))); 9277 EXPECT_EQ("// \n" 9278 "// ; \n" 9279 "// \n" 9280 "// .", 9281 format("// ; .", 9282 getLLVMStyleWithColumns(13))); 9283 EXPECT_EQ("// \n" 9284 "// \n" 9285 "// \n" 9286 "// ", 9287 format("// ", getLLVMStyleWithColumns(9))); 9288 } 9289 9290 TEST_F(FormatTest, SplitsUTF8BlockComments) { 9291 EXPECT_EQ("/* ,\n" 9292 " * \n" 9293 " * \n" 9294 " * \n" 9295 " * ,\n" 9296 " * \n" 9297 " * \n" 9298 " * . */", 9299 format("/* , \n" 9300 " * , . */", 9301 getLLVMStyleWithColumns(13))); 9302 EXPECT_EQ( 9303 "/* \n" 9304 " * \n" 9305 " * \n" 9306 " * */", 9307 format("/* */", getLLVMStyleWithColumns(9))); 9308 EXPECT_EQ("/* \n" 9309 " * \n" 9310 " * - */", 9311 format("/* - */", getLLVMStyleWithColumns(12))); 9312 } 9313 9314 #endif // _MSC_VER 9315 9316 TEST_F(FormatTest, ConstructorInitializerIndentWidth) { 9317 FormatStyle Style = getLLVMStyle(); 9318 9319 Style.ConstructorInitializerIndentWidth = 4; 9320 verifyFormat( 9321 "SomeClass::Constructor()\n" 9322 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 9323 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 9324 Style); 9325 9326 Style.ConstructorInitializerIndentWidth = 2; 9327 verifyFormat( 9328 "SomeClass::Constructor()\n" 9329 " : aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 9330 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 9331 Style); 9332 9333 Style.ConstructorInitializerIndentWidth = 0; 9334 verifyFormat( 9335 "SomeClass::Constructor()\n" 9336 ": aaaaaaaaaaaaa(aaaaaaaaaaaaaa), aaaaaaaaaaaaa(aaaaaaaaaaaaaa),\n" 9337 " aaaaaaaaaaaaa(aaaaaaaaaaaaaa) {}", 9338 Style); 9339 } 9340 9341 TEST_F(FormatTest, BreakConstructorInitializersBeforeComma) { 9342 FormatStyle Style = getLLVMStyle(); 9343 Style.BreakConstructorInitializersBeforeComma = true; 9344 Style.ConstructorInitializerIndentWidth = 4; 9345 verifyFormat("SomeClass::Constructor()\n" 9346 " : a(a)\n" 9347 " , b(b)\n" 9348 " , c(c) {}", 9349 Style); 9350 verifyFormat("SomeClass::Constructor()\n" 9351 " : a(a) {}", 9352 Style); 9353 9354 Style.ColumnLimit = 0; 9355 verifyFormat("SomeClass::Constructor()\n" 9356 " : a(a) {}", 9357 Style); 9358 verifyFormat("SomeClass::Constructor()\n" 9359 " : a(a)\n" 9360 " , b(b)\n" 9361 " , c(c) {}", 9362 Style); 9363 verifyFormat("SomeClass::Constructor()\n" 9364 " : a(a) {\n" 9365 " foo();\n" 9366 " bar();\n" 9367 "}", 9368 Style); 9369 9370 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 9371 verifyFormat("SomeClass::Constructor()\n" 9372 " : a(a)\n" 9373 " , b(b)\n" 9374 " , c(c) {\n}", 9375 Style); 9376 verifyFormat("SomeClass::Constructor()\n" 9377 " : a(a) {\n}", 9378 Style); 9379 9380 Style.ColumnLimit = 80; 9381 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 9382 Style.ConstructorInitializerIndentWidth = 2; 9383 verifyFormat("SomeClass::Constructor()\n" 9384 " : a(a)\n" 9385 " , b(b)\n" 9386 " , c(c) {}", 9387 Style); 9388 9389 Style.ConstructorInitializerIndentWidth = 0; 9390 verifyFormat("SomeClass::Constructor()\n" 9391 ": a(a)\n" 9392 ", b(b)\n" 9393 ", c(c) {}", 9394 Style); 9395 9396 Style.ConstructorInitializerAllOnOneLineOrOnePerLine = true; 9397 Style.ConstructorInitializerIndentWidth = 4; 9398 verifyFormat("SomeClass::Constructor() : aaaaaaaa(aaaaaaaa) {}", Style); 9399 verifyFormat( 9400 "SomeClass::Constructor() : aaaaa(aaaaa), aaaaa(aaaaa), aaaaa(aaaaa)\n", 9401 Style); 9402 verifyFormat( 9403 "SomeClass::Constructor()\n" 9404 " : aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa), aaaaaaaa(aaaaaaaa) {}", 9405 Style); 9406 Style.ConstructorInitializerIndentWidth = 4; 9407 Style.ColumnLimit = 60; 9408 verifyFormat("SomeClass::Constructor()\n" 9409 " : aaaaaaaa(aaaaaaaa)\n" 9410 " , aaaaaaaa(aaaaaaaa)\n" 9411 " , aaaaaaaa(aaaaaaaa) {}", 9412 Style); 9413 } 9414 9415 TEST_F(FormatTest, Destructors) { 9416 verifyFormat("void F(int &i) { i.~int(); }"); 9417 verifyFormat("void F(int &i) { i->~int(); }"); 9418 } 9419 9420 TEST_F(FormatTest, FormatsWithWebKitStyle) { 9421 FormatStyle Style = getWebKitStyle(); 9422 9423 // Don't indent in outer namespaces. 9424 verifyFormat("namespace outer {\n" 9425 "int i;\n" 9426 "namespace inner {\n" 9427 " int i;\n" 9428 "} // namespace inner\n" 9429 "} // namespace outer\n" 9430 "namespace other_outer {\n" 9431 "int i;\n" 9432 "}", 9433 Style); 9434 9435 // Don't indent case labels. 9436 verifyFormat("switch (variable) {\n" 9437 "case 1:\n" 9438 "case 2:\n" 9439 " doSomething();\n" 9440 " break;\n" 9441 "default:\n" 9442 " ++variable;\n" 9443 "}", 9444 Style); 9445 9446 // Wrap before binary operators. 9447 EXPECT_EQ( 9448 "void f()\n" 9449 "{\n" 9450 " if (aaaaaaaaaaaaaaaa\n" 9451 " && bbbbbbbbbbbbbbbbbbbbbbbb\n" 9452 " && (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 9453 " return;\n" 9454 "}", 9455 format( 9456 "void f() {\n" 9457 "if (aaaaaaaaaaaaaaaa\n" 9458 "&& bbbbbbbbbbbbbbbbbbbbbbbb\n" 9459 "&& (cccccccccccccccccccccccccc || dddddddddddddddddddd))\n" 9460 "return;\n" 9461 "}", 9462 Style)); 9463 9464 // Allow functions on a single line. 9465 verifyFormat("void f() { return; }", Style); 9466 9467 // Constructor initializers are formatted one per line with the "," on the 9468 // new line. 9469 verifyFormat("Constructor()\n" 9470 " : aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 9471 " , aaaaaaaaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaa, // break\n" 9472 " aaaaaaaaaaaaaa)\n" 9473 " , aaaaaaaaaaaaaaaaaaaaaaa()\n" 9474 "{\n" 9475 "}", 9476 Style); 9477 verifyFormat("SomeClass::Constructor()\n" 9478 " : a(a)\n" 9479 "{\n" 9480 "}", 9481 Style); 9482 EXPECT_EQ("SomeClass::Constructor()\n" 9483 " : a(a)\n" 9484 "{\n" 9485 "}", 9486 format("SomeClass::Constructor():a(a){}", Style)); 9487 verifyFormat("SomeClass::Constructor()\n" 9488 " : a(a)\n" 9489 " , b(b)\n" 9490 " , c(c)\n" 9491 "{\n" 9492 "}", Style); 9493 verifyFormat("SomeClass::Constructor()\n" 9494 " : a(a)\n" 9495 "{\n" 9496 " foo();\n" 9497 " bar();\n" 9498 "}", 9499 Style); 9500 9501 // Access specifiers should be aligned left. 9502 verifyFormat("class C {\n" 9503 "public:\n" 9504 " int i;\n" 9505 "};", 9506 Style); 9507 9508 // Do not align comments. 9509 verifyFormat("int a; // Do not\n" 9510 "double b; // align comments.", 9511 Style); 9512 9513 // Do not align operands. 9514 EXPECT_EQ("ASSERT(aaaa\n" 9515 " || bbbb);", 9516 format("ASSERT ( aaaa\n||bbbb);", Style)); 9517 9518 // Accept input's line breaks. 9519 EXPECT_EQ("if (aaaaaaaaaaaaaaa\n" 9520 " || bbbbbbbbbbbbbbb) {\n" 9521 " i++;\n" 9522 "}", 9523 format("if (aaaaaaaaaaaaaaa\n" 9524 "|| bbbbbbbbbbbbbbb) { i++; }", 9525 Style)); 9526 EXPECT_EQ("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) {\n" 9527 " i++;\n" 9528 "}", 9529 format("if (aaaaaaaaaaaaaaa || bbbbbbbbbbbbbbb) { i++; }", Style)); 9530 9531 // Don't automatically break all macro definitions (llvm.org/PR17842). 9532 verifyFormat("#define aNumber 10", Style); 9533 // However, generally keep the line breaks that the user authored. 9534 EXPECT_EQ("#define aNumber \\\n" 9535 " 10", 9536 format("#define aNumber \\\n" 9537 " 10", 9538 Style)); 9539 9540 // Keep empty and one-element array literals on a single line. 9541 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[]\n" 9542 " copyItems:YES];", 9543 format("NSArray*a=[[NSArray alloc] initWithArray:@[]\n" 9544 "copyItems:YES];", 9545 Style)); 9546 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\" ]\n" 9547 " copyItems:YES];", 9548 format("NSArray*a=[[NSArray alloc]initWithArray:@[ @\"a\" ]\n" 9549 " copyItems:YES];", 9550 Style)); 9551 // FIXME: This does not seem right, there should be more indentation before 9552 // the array literal's entries. Nested blocks have the same problem. 9553 EXPECT_EQ("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 9554 " @\"a\",\n" 9555 " @\"a\"\n" 9556 "]\n" 9557 " copyItems:YES];", 9558 format("NSArray* a = [[NSArray alloc] initWithArray:@[\n" 9559 " @\"a\",\n" 9560 " @\"a\"\n" 9561 " ]\n" 9562 " copyItems:YES];", 9563 Style)); 9564 EXPECT_EQ( 9565 "NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 9566 " copyItems:YES];", 9567 format("NSArray* a = [[NSArray alloc] initWithArray:@[ @\"a\", @\"a\" ]\n" 9568 " copyItems:YES];", 9569 Style)); 9570 9571 verifyFormat("[self.a b:c c:d];", Style); 9572 EXPECT_EQ("[self.a b:c\n" 9573 " c:d];", 9574 format("[self.a b:c\n" 9575 "c:d];", 9576 Style)); 9577 } 9578 9579 TEST_F(FormatTest, FormatsLambdas) { 9580 verifyFormat("int c = [b]() mutable { return [&b] { return b++; }(); }();\n"); 9581 verifyFormat("int c = [&] { [=] { return b++; }(); }();\n"); 9582 verifyFormat("int c = [&, &a, a] { [=, c, &d] { return b++; }(); }();\n"); 9583 verifyFormat("int c = [&a, &a, a] { [=, a, b, &c] { return b++; }(); }();\n"); 9584 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] { return b++; }(); }}\n"); 9585 verifyFormat("auto c = {[&a, &a, a] { [=, a, b, &c] {}(); }}\n"); 9586 verifyFormat("void f() {\n" 9587 " other(x.begin(), x.end(), [&](int, int) { return 1; });\n" 9588 "}\n"); 9589 verifyFormat("void f() {\n" 9590 " other(x.begin(), //\n" 9591 " x.end(), //\n" 9592 " [&](int, int) { return 1; });\n" 9593 "}\n"); 9594 verifyFormat("SomeFunction([]() { // A cool function...\n" 9595 " return 43;\n" 9596 "});"); 9597 EXPECT_EQ("SomeFunction([]() {\n" 9598 "#define A a\n" 9599 " return 43;\n" 9600 "});", 9601 format("SomeFunction([](){\n" 9602 "#define A a\n" 9603 "return 43;\n" 9604 "});")); 9605 verifyFormat("void f() {\n" 9606 " SomeFunction([](decltype(x), A *a) {});\n" 9607 "}"); 9608 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 9609 " [](const aaaaaaaaaa &a) { return a; });"); 9610 verifyFormat("string abc = SomeFunction(aaaaaaaaaaaaa, aaaaa, []() {\n" 9611 " SomeOtherFunctioooooooooooooooooooooooooon();\n" 9612 "});"); 9613 verifyFormat("Constructor()\n" 9614 " : Field([] { // comment\n" 9615 " int i;\n" 9616 " }) {}"); 9617 9618 // Lambdas with return types. 9619 verifyFormat("int c = []() -> int { return 2; }();\n"); 9620 verifyFormat("int c = []() -> vector<int> { return {2}; }();\n"); 9621 verifyFormat("Foo([]() -> std::vector<int> { return {2}; }());"); 9622 verifyGoogleFormat("auto a = [&b, c](D* d) -> D* {};"); 9623 verifyGoogleFormat("auto a = [&b, c](D* d) -> pair<D*, D*> {};"); 9624 verifyGoogleFormat("auto a = [&b, c](D* d) -> D& {};"); 9625 verifyGoogleFormat("auto a = [&b, c](D* d) -> const D* {};"); 9626 verifyFormat("auto aaaaaaaa = [](int i, // break for some reason\n" 9627 " int j) -> int {\n" 9628 " return ffffffffffffffffffffffffffffffffffffffffffff(i * j);\n" 9629 "};"); 9630 verifyFormat( 9631 "aaaaaaaaaaaaaaaaaaaaaa(\n" 9632 " [](aaaaaaaaaaaaaaaaaaaaaaaaaaa &aaa) -> aaaaaaaaaaaaaaaa {\n" 9633 " return aaaaaaaaaaaaaaaaa;\n" 9634 " });", 9635 getLLVMStyleWithColumns(70)); 9636 9637 // Multiple lambdas in the same parentheses change indentation rules. 9638 verifyFormat("SomeFunction(\n" 9639 " []() {\n" 9640 " int i = 42;\n" 9641 " return i;\n" 9642 " },\n" 9643 " []() {\n" 9644 " int j = 43;\n" 9645 " return j;\n" 9646 " });"); 9647 9648 // More complex introducers. 9649 verifyFormat("return [i, args...] {};"); 9650 9651 // Not lambdas. 9652 verifyFormat("constexpr char hello[]{\"hello\"};"); 9653 verifyFormat("double &operator[](int i) { return 0; }\n" 9654 "int i;"); 9655 verifyFormat("std::unique_ptr<int[]> foo() {}"); 9656 verifyFormat("int i = a[a][a]->f();"); 9657 verifyFormat("int i = (*b)[a]->f();"); 9658 9659 // Other corner cases. 9660 verifyFormat("void f() {\n" 9661 " bar([]() {} // Did not respect SpacesBeforeTrailingComments\n" 9662 " );\n" 9663 "}"); 9664 9665 // Lambdas created through weird macros. 9666 verifyFormat("void f() {\n" 9667 " MACRO((const AA &a) { return 1; });\n" 9668 "}"); 9669 9670 verifyFormat("if (blah_blah(whatever, whatever, [] {\n" 9671 " doo_dah();\n" 9672 " doo_dah();\n" 9673 " })) {\n" 9674 "}"); 9675 verifyFormat("auto lambda = []() {\n" 9676 " int a = 2\n" 9677 "#if A\n" 9678 " + 2\n" 9679 "#endif\n" 9680 " ;\n" 9681 "};"); 9682 } 9683 9684 TEST_F(FormatTest, FormatsBlocks) { 9685 FormatStyle ShortBlocks = getLLVMStyle(); 9686 ShortBlocks.AllowShortBlocksOnASingleLine = true; 9687 verifyFormat("int (^Block)(int, int);", ShortBlocks); 9688 verifyFormat("int (^Block1)(int, int) = ^(int i, int j)", ShortBlocks); 9689 verifyFormat("void (^block)(int) = ^(id test) { int i; };", ShortBlocks); 9690 verifyFormat("void (^block)(int) = ^(int test) { int i; };", ShortBlocks); 9691 verifyFormat("void (^block)(int) = ^id(int test) { int i; };", ShortBlocks); 9692 verifyFormat("void (^block)(int) = ^int(int test) { int i; };", ShortBlocks); 9693 9694 verifyFormat("foo(^{ bar(); });", ShortBlocks); 9695 verifyFormat("foo(a, ^{ bar(); });", ShortBlocks); 9696 verifyFormat("{ void (^block)(Object *x); }", ShortBlocks); 9697 9698 verifyFormat("[operation setCompletionBlock:^{\n" 9699 " [self onOperationDone];\n" 9700 "}];"); 9701 verifyFormat("int i = {[operation setCompletionBlock:^{\n" 9702 " [self onOperationDone];\n" 9703 "}]};"); 9704 verifyFormat("[operation setCompletionBlock:^(int *i) {\n" 9705 " f();\n" 9706 "}];"); 9707 verifyFormat("int a = [operation block:^int(int *i) {\n" 9708 " return 1;\n" 9709 "}];"); 9710 verifyFormat("[myObject doSomethingWith:arg1\n" 9711 " aaa:^int(int *a) {\n" 9712 " return 1;\n" 9713 " }\n" 9714 " bbb:f(a * bbbbbbbb)];"); 9715 9716 verifyFormat("[operation setCompletionBlock:^{\n" 9717 " [self.delegate newDataAvailable];\n" 9718 "}];", 9719 getLLVMStyleWithColumns(60)); 9720 verifyFormat("dispatch_async(_fileIOQueue, ^{\n" 9721 " NSString *path = [self sessionFilePath];\n" 9722 " if (path) {\n" 9723 " // ...\n" 9724 " }\n" 9725 "});"); 9726 verifyFormat("[[SessionService sharedService]\n" 9727 " loadWindowWithCompletionBlock:^(SessionWindow *window) {\n" 9728 " if (window) {\n" 9729 " [self windowDidLoad:window];\n" 9730 " } else {\n" 9731 " [self errorLoadingWindow];\n" 9732 " }\n" 9733 " }];"); 9734 verifyFormat("void (^largeBlock)(void) = ^{\n" 9735 " // ...\n" 9736 "};\n", 9737 getLLVMStyleWithColumns(40)); 9738 verifyFormat("[[SessionService sharedService]\n" 9739 " loadWindowWithCompletionBlock: //\n" 9740 " ^(SessionWindow *window) {\n" 9741 " if (window) {\n" 9742 " [self windowDidLoad:window];\n" 9743 " } else {\n" 9744 " [self errorLoadingWindow];\n" 9745 " }\n" 9746 " }];", 9747 getLLVMStyleWithColumns(60)); 9748 verifyFormat("[myObject doSomethingWith:arg1\n" 9749 " firstBlock:^(Foo *a) {\n" 9750 " // ...\n" 9751 " int i;\n" 9752 " }\n" 9753 " secondBlock:^(Bar *b) {\n" 9754 " // ...\n" 9755 " int i;\n" 9756 " }\n" 9757 " thirdBlock:^Foo(Bar *b) {\n" 9758 " // ...\n" 9759 " int i;\n" 9760 " }];"); 9761 verifyFormat("[myObject doSomethingWith:arg1\n" 9762 " firstBlock:-1\n" 9763 " secondBlock:^(Bar *b) {\n" 9764 " // ...\n" 9765 " int i;\n" 9766 " }];"); 9767 9768 verifyFormat("f(^{\n" 9769 " @autoreleasepool {\n" 9770 " if (a) {\n" 9771 " g();\n" 9772 " }\n" 9773 " }\n" 9774 "});"); 9775 verifyFormat("Block b = ^int *(A *a, B *b) {}"); 9776 9777 FormatStyle FourIndent = getLLVMStyle(); 9778 FourIndent.ObjCBlockIndentWidth = 4; 9779 verifyFormat("[operation setCompletionBlock:^{\n" 9780 " [self onOperationDone];\n" 9781 "}];", 9782 FourIndent); 9783 } 9784 9785 TEST_F(FormatTest, SupportsCRLF) { 9786 EXPECT_EQ("int a;\r\n" 9787 "int b;\r\n" 9788 "int c;\r\n", 9789 format("int a;\r\n" 9790 " int b;\r\n" 9791 " int c;\r\n", 9792 getLLVMStyle())); 9793 EXPECT_EQ("int a;\r\n" 9794 "int b;\r\n" 9795 "int c;\r\n", 9796 format("int a;\r\n" 9797 " int b;\n" 9798 " int c;\r\n", 9799 getLLVMStyle())); 9800 EXPECT_EQ("int a;\n" 9801 "int b;\n" 9802 "int c;\n", 9803 format("int a;\r\n" 9804 " int b;\n" 9805 " int c;\n", 9806 getLLVMStyle())); 9807 EXPECT_EQ("\"aaaaaaa \"\r\n" 9808 "\"bbbbbbb\";\r\n", 9809 format("\"aaaaaaa bbbbbbb\";\r\n", getLLVMStyleWithColumns(10))); 9810 EXPECT_EQ("#define A \\\r\n" 9811 " b; \\\r\n" 9812 " c; \\\r\n" 9813 " d;\r\n", 9814 format("#define A \\\r\n" 9815 " b; \\\r\n" 9816 " c; d; \r\n", 9817 getGoogleStyle())); 9818 9819 EXPECT_EQ("/*\r\n" 9820 "multi line block comments\r\n" 9821 "should not introduce\r\n" 9822 "an extra carriage return\r\n" 9823 "*/\r\n", 9824 format("/*\r\n" 9825 "multi line block comments\r\n" 9826 "should not introduce\r\n" 9827 "an extra carriage return\r\n" 9828 "*/\r\n")); 9829 } 9830 9831 TEST_F(FormatTest, MunchSemicolonAfterBlocks) { 9832 verifyFormat("MY_CLASS(C) {\n" 9833 " int i;\n" 9834 " int j;\n" 9835 "};"); 9836 } 9837 9838 TEST_F(FormatTest, ConfigurableContinuationIndentWidth) { 9839 FormatStyle TwoIndent = getLLVMStyleWithColumns(15); 9840 TwoIndent.ContinuationIndentWidth = 2; 9841 9842 EXPECT_EQ("int i =\n" 9843 " longFunction(\n" 9844 " arg);", 9845 format("int i = longFunction(arg);", TwoIndent)); 9846 9847 FormatStyle SixIndent = getLLVMStyleWithColumns(20); 9848 SixIndent.ContinuationIndentWidth = 6; 9849 9850 EXPECT_EQ("int i =\n" 9851 " longFunction(\n" 9852 " arg);", 9853 format("int i = longFunction(arg);", SixIndent)); 9854 } 9855 9856 TEST_F(FormatTest, SpacesInAngles) { 9857 FormatStyle Spaces = getLLVMStyle(); 9858 Spaces.SpacesInAngles = true; 9859 9860 verifyFormat("static_cast< int >(arg);", Spaces); 9861 verifyFormat("template < typename T0, typename T1 > void f() {}", Spaces); 9862 verifyFormat("f< int, float >();", Spaces); 9863 verifyFormat("template <> g() {}", Spaces); 9864 verifyFormat("template < std::vector< int > > f() {}", Spaces); 9865 9866 Spaces.Standard = FormatStyle::LS_Cpp03; 9867 Spaces.SpacesInAngles = true; 9868 verifyFormat("A< A< int > >();", Spaces); 9869 9870 Spaces.SpacesInAngles = false; 9871 verifyFormat("A<A<int> >();", Spaces); 9872 9873 Spaces.Standard = FormatStyle::LS_Cpp11; 9874 Spaces.SpacesInAngles = true; 9875 verifyFormat("A< A< int > >();", Spaces); 9876 9877 Spaces.SpacesInAngles = false; 9878 verifyFormat("A<A<int>>();", Spaces); 9879 } 9880 9881 TEST_F(FormatTest, TripleAngleBrackets) { 9882 verifyFormat("f<<<1, 1>>>();"); 9883 verifyFormat("f<<<1, 1, 1, s>>>();"); 9884 verifyFormat("f<<<a, b, c, d>>>();"); 9885 EXPECT_EQ("f<<<1, 1>>>();", 9886 format("f <<< 1, 1 >>> ();")); 9887 verifyFormat("f<param><<<1, 1>>>();"); 9888 verifyFormat("f<1><<<1, 1>>>();"); 9889 EXPECT_EQ("f<param><<<1, 1>>>();", 9890 format("f< param > <<< 1, 1 >>> ();")); 9891 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 9892 "aaaaaaaaaaa<<<\n 1, 1>>>();"); 9893 } 9894 9895 TEST_F(FormatTest, MergeLessLessAtEnd) { 9896 verifyFormat("<<"); 9897 EXPECT_EQ("< < <", format("\\\n<<<")); 9898 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 9899 "aaallvm::outs() <<"); 9900 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" 9901 "aaaallvm::outs()\n <<"); 9902 } 9903 9904 TEST_F(FormatTest, HandleUnbalancedImplicitBracesAcrossPPBranches) { 9905 std::string code = "#if A\n" 9906 "#if B\n" 9907 "a.\n" 9908 "#endif\n" 9909 " a = 1;\n" 9910 "#else\n" 9911 "#endif\n" 9912 "#if C\n" 9913 "#else\n" 9914 "#endif\n"; 9915 EXPECT_EQ(code, format(code)); 9916 } 9917 9918 TEST_F(FormatTest, HandleConflictMarkers) { 9919 // Git/SVN conflict markers. 9920 EXPECT_EQ("int a;\n" 9921 "void f() {\n" 9922 " callme(some(parameter1,\n" 9923 "<<<<<<< text by the vcs\n" 9924 " parameter2),\n" 9925 "||||||| text by the vcs\n" 9926 " parameter2),\n" 9927 " parameter3,\n" 9928 "======= text by the vcs\n" 9929 " parameter2, parameter3),\n" 9930 ">>>>>>> text by the vcs\n" 9931 " otherparameter);\n", 9932 format("int a;\n" 9933 "void f() {\n" 9934 " callme(some(parameter1,\n" 9935 "<<<<<<< text by the vcs\n" 9936 " parameter2),\n" 9937 "||||||| text by the vcs\n" 9938 " parameter2),\n" 9939 " parameter3,\n" 9940 "======= text by the vcs\n" 9941 " parameter2,\n" 9942 " parameter3),\n" 9943 ">>>>>>> text by the vcs\n" 9944 " otherparameter);\n")); 9945 9946 // Perforce markers. 9947 EXPECT_EQ("void f() {\n" 9948 " function(\n" 9949 ">>>> text by the vcs\n" 9950 " parameter,\n" 9951 "==== text by the vcs\n" 9952 " parameter,\n" 9953 "==== text by the vcs\n" 9954 " parameter,\n" 9955 "<<<< text by the vcs\n" 9956 " parameter);\n", 9957 format("void f() {\n" 9958 " function(\n" 9959 ">>>> text by the vcs\n" 9960 " parameter,\n" 9961 "==== text by the vcs\n" 9962 " parameter,\n" 9963 "==== text by the vcs\n" 9964 " parameter,\n" 9965 "<<<< text by the vcs\n" 9966 " parameter);\n")); 9967 9968 EXPECT_EQ("<<<<<<<\n" 9969 "|||||||\n" 9970 "=======\n" 9971 ">>>>>>>", 9972 format("<<<<<<<\n" 9973 "|||||||\n" 9974 "=======\n" 9975 ">>>>>>>")); 9976 9977 EXPECT_EQ("<<<<<<<\n" 9978 "|||||||\n" 9979 "int i;\n" 9980 "=======\n" 9981 ">>>>>>>", 9982 format("<<<<<<<\n" 9983 "|||||||\n" 9984 "int i;\n" 9985 "=======\n" 9986 ">>>>>>>")); 9987 9988 // FIXME: Handle parsing of macros around conflict markers correctly: 9989 EXPECT_EQ("#define Macro \\\n" 9990 "<<<<<<<\n" 9991 "Something \\\n" 9992 "|||||||\n" 9993 "Else \\\n" 9994 "=======\n" 9995 "Other \\\n" 9996 ">>>>>>>\n" 9997 " End int i;\n", 9998 format("#define Macro \\\n" 9999 "<<<<<<<\n" 10000 " Something \\\n" 10001 "|||||||\n" 10002 " Else \\\n" 10003 "=======\n" 10004 " Other \\\n" 10005 ">>>>>>>\n" 10006 " End\n" 10007 "int i;\n")); 10008 } 10009 10010 TEST_F(FormatTest, DisableRegions) { 10011 EXPECT_EQ("int i;\n" 10012 "// clang-format off\n" 10013 " int j;\n" 10014 "// clang-format on\n" 10015 "int k;", 10016 format(" int i;\n" 10017 " // clang-format off\n" 10018 " int j;\n" 10019 " // clang-format on\n" 10020 " int k;")); 10021 EXPECT_EQ("int i;\n" 10022 "/* clang-format off */\n" 10023 " int j;\n" 10024 "/* clang-format on */\n" 10025 "int k;", 10026 format(" int i;\n" 10027 " /* clang-format off */\n" 10028 " int j;\n" 10029 " /* clang-format on */\n" 10030 " int k;")); 10031 } 10032 10033 TEST_F(FormatTest, DoNotCrashOnInvalidInput) { 10034 format("? ) ="); 10035 } 10036 10037 } // end namespace tooling 10038 } // end namespace clang 10039
