1 //===- unittest/Format/FormatTestJS.cpp - Formatting unit tests for JS ----===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "FormatTestUtils.h" 10 #include "clang/Format/Format.h" 11 #include "llvm/Support/Debug.h" 12 #include "gtest/gtest.h" 13 14 #define DEBUG_TYPE "format-test" 15 16 namespace clang { 17 namespace format { 18 19 class FormatTestJS : public ::testing::Test { 20 protected: 21 static std::string format(llvm::StringRef Code, unsigned Offset, 22 unsigned Length, const FormatStyle &Style) { 23 LLVM_DEBUG(llvm::errs() << "---\n"); 24 LLVM_DEBUG(llvm::errs() << Code << "\n\n"); 25 std::vector<tooling::Range> Ranges(1, tooling::Range(Offset, Length)); 26 FormattingAttemptStatus Status; 27 tooling::Replacements Replaces = 28 reformat(Style, Code, Ranges, "<stdin>", &Status); 29 EXPECT_TRUE(Status.FormatComplete); 30 auto Result = applyAllReplacements(Code, Replaces); 31 EXPECT_TRUE(static_cast<bool>(Result)); 32 LLVM_DEBUG(llvm::errs() << "\n" << *Result << "\n\n"); 33 return *Result; 34 } 35 36 static std::string format( 37 llvm::StringRef Code, 38 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 39 return format(Code, 0, Code.size(), Style); 40 } 41 42 static FormatStyle getGoogleJSStyleWithColumns(unsigned ColumnLimit) { 43 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 44 Style.ColumnLimit = ColumnLimit; 45 return Style; 46 } 47 48 static void verifyFormat( 49 llvm::StringRef Code, 50 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 51 EXPECT_EQ(Code.str(), format(Code, Style)) 52 << "Expected code is not stable"; 53 std::string Result = format(test::messUp(Code), Style); 54 EXPECT_EQ(Code.str(), Result) << "Formatted:\n" << Result; 55 } 56 57 static void verifyFormat( 58 llvm::StringRef Expected, 59 llvm::StringRef Code, 60 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 61 EXPECT_EQ(Expected.str(), format(Expected, Style)) 62 << "Expected code is not stable"; 63 std::string Result = format(Code, Style); 64 EXPECT_EQ(Expected.str(), Result) << "Formatted:\n" << Result; 65 } 66 }; 67 68 TEST_F(FormatTestJS, BlockComments) { 69 verifyFormat("/* aaaaaaaaaaaaa */ aaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 70 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 71 // Breaks after a single line block comment. 72 EXPECT_EQ("aaaaa = bbbb.ccccccccccccccc(\n" 73 " /** @type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala} */\n" 74 " mediaMessage);", 75 format("aaaaa = bbbb.ccccccccccccccc(\n" 76 " /** " 77 "@type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala} */ " 78 "mediaMessage);", 79 getGoogleJSStyleWithColumns(70))); 80 // Breaks after a multiline block comment. 81 EXPECT_EQ( 82 "aaaaa = bbbb.ccccccccccccccc(\n" 83 " /**\n" 84 " * @type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala}\n" 85 " */\n" 86 " mediaMessage);", 87 format("aaaaa = bbbb.ccccccccccccccc(\n" 88 " /**\n" 89 " * @type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala}\n" 90 " */ mediaMessage);", 91 getGoogleJSStyleWithColumns(70))); 92 } 93 94 TEST_F(FormatTestJS, JSDocComments) { 95 // Break the first line of a multiline jsdoc comment. 96 EXPECT_EQ("/**\n" 97 " * jsdoc line 1\n" 98 " * jsdoc line 2\n" 99 " */", 100 format("/** jsdoc line 1\n" 101 " * jsdoc line 2\n" 102 " */", 103 getGoogleJSStyleWithColumns(20))); 104 // Both break after '/**' and break the line itself. 105 EXPECT_EQ("/**\n" 106 " * jsdoc line long\n" 107 " * long jsdoc line 2\n" 108 " */", 109 format("/** jsdoc line long long\n" 110 " * jsdoc line 2\n" 111 " */", 112 getGoogleJSStyleWithColumns(20))); 113 // Break a short first line if the ending '*/' is on a newline. 114 EXPECT_EQ("/**\n" 115 " * jsdoc line 1\n" 116 " */", 117 format("/** jsdoc line 1\n" 118 " */", getGoogleJSStyleWithColumns(20))); 119 // Don't break the first line of a short single line jsdoc comment. 120 EXPECT_EQ("/** jsdoc line 1 */", 121 format("/** jsdoc line 1 */", getGoogleJSStyleWithColumns(20))); 122 // Don't break the first line of a single line jsdoc comment if it just fits 123 // the column limit. 124 EXPECT_EQ("/** jsdoc line 12 */", 125 format("/** jsdoc line 12 */", getGoogleJSStyleWithColumns(20))); 126 // Don't break after '/**' and before '*/' if there is no space between 127 // '/**' and the content. 128 EXPECT_EQ( 129 "/*** nonjsdoc long\n" 130 " * line */", 131 format("/*** nonjsdoc long line */", getGoogleJSStyleWithColumns(20))); 132 EXPECT_EQ( 133 "/**strange long long\n" 134 " * line */", 135 format("/**strange long long line */", getGoogleJSStyleWithColumns(20))); 136 // Break the first line of a single line jsdoc comment if it just exceeds the 137 // column limit. 138 EXPECT_EQ("/**\n" 139 " * jsdoc line 123\n" 140 " */", 141 format("/** jsdoc line 123 */", getGoogleJSStyleWithColumns(20))); 142 // Break also if the leading indent of the first line is more than 1 column. 143 EXPECT_EQ("/**\n" 144 " * jsdoc line 123\n" 145 " */", 146 format("/** jsdoc line 123 */", getGoogleJSStyleWithColumns(20))); 147 // Break also if the leading indent of the first line is more than 1 column. 148 EXPECT_EQ("/**\n" 149 " * jsdoc line 123\n" 150 " */", 151 format("/** jsdoc line 123 */", getGoogleJSStyleWithColumns(20))); 152 // Break after the content of the last line. 153 EXPECT_EQ("/**\n" 154 " * line 1\n" 155 " * line 2\n" 156 " */", 157 format("/**\n" 158 " * line 1\n" 159 " * line 2 */", 160 getGoogleJSStyleWithColumns(20))); 161 // Break both the content and after the content of the last line. 162 EXPECT_EQ("/**\n" 163 " * line 1\n" 164 " * line long long\n" 165 " * long\n" 166 " */", 167 format("/**\n" 168 " * line 1\n" 169 " * line long long long */", 170 getGoogleJSStyleWithColumns(20))); 171 172 // The comment block gets indented. 173 EXPECT_EQ("function f() {\n" 174 " /**\n" 175 " * comment about\n" 176 " * x\n" 177 " */\n" 178 " var x = 1;\n" 179 "}", 180 format("function f() {\n" 181 "/** comment about x */\n" 182 "var x = 1;\n" 183 "}", 184 getGoogleJSStyleWithColumns(20))); 185 186 // Don't break the first line of a single line short jsdoc comment pragma. 187 EXPECT_EQ("/** @returns j */", 188 format("/** @returns j */", 189 getGoogleJSStyleWithColumns(20))); 190 191 // Break a single line long jsdoc comment pragma. 192 EXPECT_EQ("/**\n" 193 " * @returns {string} jsdoc line 12\n" 194 " */", 195 format("/** @returns {string} jsdoc line 12 */", 196 getGoogleJSStyleWithColumns(20))); 197 EXPECT_EQ("/**\n" 198 " * @returns {string}\n" 199 " * jsdoc line 12\n" 200 " */", 201 format("/** @returns {string} jsdoc line 12 */", 202 getGoogleJSStyleWithColumns(25))); 203 204 EXPECT_EQ("/**\n" 205 " * @returns {string} jsdoc line 12\n" 206 " */", 207 format("/** @returns {string} jsdoc line 12 */", 208 getGoogleJSStyleWithColumns(20))); 209 210 // FIXME: this overcounts the */ as a continuation of the 12 when breaking. 211 // Related to the FIXME in BreakableBlockComment::getRangeLength. 212 EXPECT_EQ("/**\n" 213 " * @returns {string}\n" 214 " * jsdoc line line\n" 215 " * 12\n" 216 " */", 217 format("/** @returns {string} jsdoc line line 12*/", 218 getGoogleJSStyleWithColumns(25))); 219 220 // Fix a multiline jsdoc comment ending in a comment pragma. 221 EXPECT_EQ("/**\n" 222 " * line 1\n" 223 " * line 2\n" 224 " * @returns {string}\n" 225 " * jsdoc line 12\n" 226 " */", 227 format("/** line 1\n" 228 " * line 2\n" 229 " * @returns {string} jsdoc line 12 */", 230 getGoogleJSStyleWithColumns(20))); 231 232 EXPECT_EQ("/**\n" 233 " * line 1\n" 234 " * line 2\n" 235 " *\n" 236 " * @returns j\n" 237 " */", 238 format("/** line 1\n" 239 " * line 2\n" 240 " *\n" 241 " * @returns j */", 242 getGoogleJSStyleWithColumns(20))); 243 } 244 245 TEST_F(FormatTestJS, UnderstandsJavaScriptOperators) { 246 verifyFormat("a == = b;"); 247 verifyFormat("a != = b;"); 248 249 verifyFormat("a === b;"); 250 verifyFormat("aaaaaaa ===\n b;", getGoogleJSStyleWithColumns(10)); 251 verifyFormat("a !== b;"); 252 verifyFormat("aaaaaaa !==\n b;", getGoogleJSStyleWithColumns(10)); 253 verifyFormat("if (a + b + c +\n" 254 " d !==\n" 255 " e + f + g)\n" 256 " q();", 257 getGoogleJSStyleWithColumns(20)); 258 259 verifyFormat("a >> >= b;"); 260 261 verifyFormat("a >>> b;"); 262 verifyFormat("aaaaaaa >>>\n b;", getGoogleJSStyleWithColumns(10)); 263 verifyFormat("a >>>= b;"); 264 verifyFormat("aaaaaaa >>>=\n b;", getGoogleJSStyleWithColumns(10)); 265 verifyFormat("if (a + b + c +\n" 266 " d >>>\n" 267 " e + f + g)\n" 268 " q();", 269 getGoogleJSStyleWithColumns(20)); 270 verifyFormat("var x = aaaaaaaaaa ?\n" 271 " bbbbbb :\n" 272 " ccc;", 273 getGoogleJSStyleWithColumns(20)); 274 275 verifyFormat("var b = a.map((x) => x + 1);"); 276 verifyFormat("return ('aaa') in bbbb;"); 277 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 278 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 279 FormatStyle Style = getGoogleJSStyleWithColumns(80); 280 Style.AlignOperands = true; 281 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 282 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 283 Style); 284 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 285 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa()\n" 286 " in aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 287 Style); 288 289 // ES6 spread operator. 290 verifyFormat("someFunction(...a);"); 291 verifyFormat("var x = [1, ...a, 2];"); 292 } 293 294 TEST_F(FormatTestJS, UnderstandsAmpAmp) { 295 verifyFormat("e && e.SomeFunction();"); 296 } 297 298 TEST_F(FormatTestJS, LiteralOperatorsCanBeKeywords) { 299 verifyFormat("not.and.or.not_eq = 1;"); 300 } 301 302 TEST_F(FormatTestJS, ReservedWords) { 303 // JavaScript reserved words (aka keywords) are only illegal when used as 304 // Identifiers, but are legal as IdentifierNames. 305 verifyFormat("x.class.struct = 1;"); 306 verifyFormat("x.case = 1;"); 307 verifyFormat("x.interface = 1;"); 308 verifyFormat("x.for = 1;"); 309 verifyFormat("x.of();"); 310 verifyFormat("of(null);"); 311 verifyFormat("return of(null);"); 312 verifyFormat("import {of} from 'x';"); 313 verifyFormat("x.in();"); 314 verifyFormat("x.let();"); 315 verifyFormat("x.var();"); 316 verifyFormat("x.for();"); 317 verifyFormat("x.as();"); 318 verifyFormat("x.instanceof();"); 319 verifyFormat("x.switch();"); 320 verifyFormat("x.case();"); 321 verifyFormat("x.delete();"); 322 verifyFormat("x.throw();"); 323 verifyFormat("x.throws();"); 324 verifyFormat("x.if();"); 325 verifyFormat("x = {\n" 326 " a: 12,\n" 327 " interface: 1,\n" 328 " switch: 1,\n" 329 "};"); 330 verifyFormat("var struct = 2;"); 331 verifyFormat("var union = 2;"); 332 verifyFormat("var interface = 2;"); 333 verifyFormat("interface = 2;"); 334 verifyFormat("x = interface instanceof y;"); 335 verifyFormat("interface Test {\n" 336 " x: string;\n" 337 " switch: string;\n" 338 " case: string;\n" 339 " default: string;\n" 340 "}\n"); 341 verifyFormat("const Axis = {\n" 342 " for: 'for',\n" 343 " x: 'x'\n" 344 "};", 345 "const Axis = {for: 'for', x: 'x'};"); 346 } 347 348 TEST_F(FormatTestJS, ReservedWordsMethods) { 349 verifyFormat( 350 "class X {\n" 351 " delete() {\n" 352 " x();\n" 353 " }\n" 354 " interface() {\n" 355 " x();\n" 356 " }\n" 357 " let() {\n" 358 " x();\n" 359 " }\n" 360 "}\n"); 361 } 362 363 TEST_F(FormatTestJS, ReservedWordsParenthesized) { 364 // All of these are statements using the keyword, not function calls. 365 verifyFormat("throw (x + y);\n" 366 "await (await x).y;\n" 367 "typeof (x) === 'string';\n" 368 "void (0);\n" 369 "delete (x.y);\n" 370 "return (x);\n"); 371 } 372 373 TEST_F(FormatTestJS, CppKeywords) { 374 // Make sure we don't mess stuff up because of C++ keywords. 375 verifyFormat("return operator && (aa);"); 376 // .. or QT ones. 377 verifyFormat("slots: Slot[];"); 378 } 379 380 TEST_F(FormatTestJS, ES6DestructuringAssignment) { 381 verifyFormat("var [a, b, c] = [1, 2, 3];"); 382 verifyFormat("const [a, b, c] = [1, 2, 3];"); 383 verifyFormat("let [a, b, c] = [1, 2, 3];"); 384 verifyFormat("var {a, b} = {a: 1, b: 2};"); 385 verifyFormat("let {a, b} = {a: 1, b: 2};"); 386 } 387 388 TEST_F(FormatTestJS, ContainerLiterals) { 389 verifyFormat("var x = {\n" 390 " y: function(a) {\n" 391 " return a;\n" 392 " }\n" 393 "};"); 394 verifyFormat("return {\n" 395 " link: function() {\n" 396 " f(); //\n" 397 " }\n" 398 "};"); 399 verifyFormat("return {\n" 400 " a: a,\n" 401 " link: function() {\n" 402 " f(); //\n" 403 " }\n" 404 "};"); 405 verifyFormat("return {\n" 406 " a: a,\n" 407 " link: function() {\n" 408 " f(); //\n" 409 " },\n" 410 " link: function() {\n" 411 " f(); //\n" 412 " }\n" 413 "};"); 414 verifyFormat("var stuff = {\n" 415 " // comment for update\n" 416 " update: false,\n" 417 " // comment for modules\n" 418 " modules: false,\n" 419 " // comment for tasks\n" 420 " tasks: false\n" 421 "};"); 422 verifyFormat("return {\n" 423 " 'finish':\n" 424 " //\n" 425 " a\n" 426 "};"); 427 verifyFormat("var obj = {\n" 428 " fooooooooo: function(x) {\n" 429 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 430 " }\n" 431 "};"); 432 // Simple object literal, as opposed to enum style below. 433 verifyFormat("var obj = {a: 123};"); 434 // Enum style top level assignment. 435 verifyFormat("X = {\n a: 123\n};"); 436 verifyFormat("X.Y = {\n a: 123\n};"); 437 // But only on the top level, otherwise its a plain object literal assignment. 438 verifyFormat("function x() {\n" 439 " y = {z: 1};\n" 440 "}"); 441 verifyFormat("x = foo && {a: 123};"); 442 443 // Arrow functions in object literals. 444 verifyFormat("var x = {\n" 445 " y: (a) => {\n" 446 " return a;\n" 447 " }\n" 448 "};"); 449 verifyFormat("var x = {y: (a) => a};"); 450 451 // Methods in object literals. 452 verifyFormat("var x = {\n" 453 " y(a: string): number {\n" 454 " return a;\n" 455 " }\n" 456 "};"); 457 verifyFormat("var x = {\n" 458 " y(a: string) {\n" 459 " return a;\n" 460 " }\n" 461 "};"); 462 463 // Computed keys. 464 verifyFormat("var x = {[a]: 1, b: 2, [c]: 3};"); 465 verifyFormat("var x = {\n" 466 " [a]: 1,\n" 467 " b: 2,\n" 468 " [c]: 3,\n" 469 "};"); 470 471 // Object literals can leave out labels. 472 verifyFormat("f({a}, () => {\n" 473 " g(); //\n" 474 "});"); 475 476 // Keys can be quoted. 477 verifyFormat("var x = {\n" 478 " a: a,\n" 479 " b: b,\n" 480 " 'c': c,\n" 481 "};"); 482 483 // Dict literals can skip the label names. 484 verifyFormat("var x = {\n" 485 " aaa,\n" 486 " aaa,\n" 487 " aaa,\n" 488 "};"); 489 verifyFormat("return {\n" 490 " a,\n" 491 " b: 'b',\n" 492 " c,\n" 493 "};"); 494 } 495 496 TEST_F(FormatTestJS, MethodsInObjectLiterals) { 497 verifyFormat("var o = {\n" 498 " value: 'test',\n" 499 " get value() { // getter\n" 500 " return this.value;\n" 501 " }\n" 502 "};"); 503 verifyFormat("var o = {\n" 504 " value: 'test',\n" 505 " set value(val) { // setter\n" 506 " this.value = val;\n" 507 " }\n" 508 "};"); 509 verifyFormat("var o = {\n" 510 " value: 'test',\n" 511 " someMethod(val) { // method\n" 512 " doSomething(this.value + val);\n" 513 " }\n" 514 "};"); 515 verifyFormat("var o = {\n" 516 " someMethod(val) { // method\n" 517 " doSomething(this.value + val);\n" 518 " },\n" 519 " someOtherMethod(val) { // method\n" 520 " doSomething(this.value + val);\n" 521 " }\n" 522 "};"); 523 } 524 525 TEST_F(FormatTestJS, GettersSettersVisibilityKeywords) { 526 // Don't break after "protected" 527 verifyFormat("class X {\n" 528 " protected get getter():\n" 529 " number {\n" 530 " return 1;\n" 531 " }\n" 532 "}", 533 getGoogleJSStyleWithColumns(12)); 534 // Don't break after "get" 535 verifyFormat("class X {\n" 536 " protected get someReallyLongGetterName():\n" 537 " number {\n" 538 " return 1;\n" 539 " }\n" 540 "}", 541 getGoogleJSStyleWithColumns(40)); 542 } 543 544 TEST_F(FormatTestJS, SpacesInContainerLiterals) { 545 verifyFormat("var arr = [1, 2, 3];"); 546 verifyFormat("f({a: 1, b: 2, c: 3});"); 547 548 verifyFormat("var object_literal_with_long_name = {\n" 549 " a: 'aaaaaaaaaaaaaaaaaa',\n" 550 " b: 'bbbbbbbbbbbbbbbbbb'\n" 551 "};"); 552 553 verifyFormat("f({a: 1, b: 2, c: 3});", 554 getChromiumStyle(FormatStyle::LK_JavaScript)); 555 verifyFormat("f({'a': [{}]});"); 556 } 557 558 TEST_F(FormatTestJS, SingleQuotedStrings) { 559 verifyFormat("this.function('', true);"); 560 } 561 562 TEST_F(FormatTestJS, GoogScopes) { 563 verifyFormat("goog.scope(function() {\n" 564 "var x = a.b;\n" 565 "var y = c.d;\n" 566 "}); // goog.scope"); 567 verifyFormat("goog.scope(function() {\n" 568 "// test\n" 569 "var x = 0;\n" 570 "// test\n" 571 "});"); 572 } 573 574 TEST_F(FormatTestJS, IIFEs) { 575 // Internal calling parens; no semi. 576 verifyFormat("(function() {\n" 577 "var a = 1;\n" 578 "}())"); 579 // External calling parens; no semi. 580 verifyFormat("(function() {\n" 581 "var b = 2;\n" 582 "})()"); 583 // Internal calling parens; with semi. 584 verifyFormat("(function() {\n" 585 "var c = 3;\n" 586 "}());"); 587 // External calling parens; with semi. 588 verifyFormat("(function() {\n" 589 "var d = 4;\n" 590 "})();"); 591 } 592 593 TEST_F(FormatTestJS, GoogModules) { 594 verifyFormat("goog.module('this.is.really.absurdly.long');", 595 getGoogleJSStyleWithColumns(40)); 596 verifyFormat("goog.require('this.is.really.absurdly.long');", 597 getGoogleJSStyleWithColumns(40)); 598 verifyFormat("goog.provide('this.is.really.absurdly.long');", 599 getGoogleJSStyleWithColumns(40)); 600 verifyFormat("var long = goog.require('this.is.really.absurdly.long');", 601 getGoogleJSStyleWithColumns(40)); 602 verifyFormat("const X = goog.requireType('this.is.really.absurdly.long');", 603 getGoogleJSStyleWithColumns(40)); 604 verifyFormat("goog.forwardDeclare('this.is.really.absurdly.long');", 605 getGoogleJSStyleWithColumns(40)); 606 607 // These should be wrapped normally. 608 verifyFormat( 609 "var MyLongClassName =\n" 610 " goog.module.get('my.long.module.name.followedBy.MyLongClassName');"); 611 verifyFormat("function a() {\n" 612 " goog.setTestOnly();\n" 613 "}\n", 614 "function a() {\n" 615 "goog.setTestOnly();\n" 616 "}\n"); 617 } 618 619 TEST_F(FormatTestJS, FormatsNamespaces) { 620 verifyFormat("namespace Foo {\n" 621 " export let x = 1;\n" 622 "}\n"); 623 verifyFormat("declare namespace Foo {\n" 624 " export let x: number;\n" 625 "}\n"); 626 } 627 628 TEST_F(FormatTestJS, NamespacesMayNotWrap) { 629 verifyFormat("declare namespace foobarbaz {\n" 630 "}\n", getGoogleJSStyleWithColumns(18)); 631 verifyFormat("declare module foobarbaz {\n" 632 "}\n", getGoogleJSStyleWithColumns(15)); 633 verifyFormat("namespace foobarbaz {\n" 634 "}\n", getGoogleJSStyleWithColumns(10)); 635 verifyFormat("module foobarbaz {\n" 636 "}\n", getGoogleJSStyleWithColumns(7)); 637 } 638 639 TEST_F(FormatTestJS, AmbientDeclarations) { 640 FormatStyle NineCols = getGoogleJSStyleWithColumns(9); 641 verifyFormat( 642 "declare class\n" 643 " X {}", 644 NineCols); 645 verifyFormat( 646 "declare function\n" 647 "x();", // TODO(martinprobst): should ideally be indented. 648 NineCols); 649 verifyFormat("declare function foo();\n" 650 "let x = 1;\n"); 651 verifyFormat("declare function foo(): string;\n" 652 "let x = 1;\n"); 653 verifyFormat("declare function foo(): {x: number};\n" 654 "let x = 1;\n"); 655 verifyFormat("declare class X {}\n" 656 "let x = 1;\n"); 657 verifyFormat("declare interface Y {}\n" 658 "let x = 1;\n"); 659 verifyFormat( 660 "declare enum X {\n" 661 "}", 662 NineCols); 663 verifyFormat( 664 "declare let\n" 665 " x: number;", 666 NineCols); 667 } 668 669 TEST_F(FormatTestJS, FormatsFreestandingFunctions) { 670 verifyFormat("function outer1(a, b) {\n" 671 " function inner1(a, b) {\n" 672 " return a;\n" 673 " }\n" 674 " inner1(a, b);\n" 675 "}\n" 676 "function outer2(a, b) {\n" 677 " function inner2(a, b) {\n" 678 " return a;\n" 679 " }\n" 680 " inner2(a, b);\n" 681 "}"); 682 verifyFormat("function f() {}"); 683 verifyFormat("function aFunction() {}\n" 684 "(function f() {\n" 685 " var x = 1;\n" 686 "}());\n"); 687 verifyFormat("function aFunction() {}\n" 688 "{\n" 689 " let x = 1;\n" 690 " console.log(x);\n" 691 "}\n"); 692 } 693 694 TEST_F(FormatTestJS, GeneratorFunctions) { 695 verifyFormat("function* f() {\n" 696 " let x = 1;\n" 697 " yield x;\n" 698 " yield* something();\n" 699 " yield [1, 2];\n" 700 " yield {a: 1};\n" 701 "}"); 702 verifyFormat("function*\n" 703 " f() {\n" 704 "}", 705 getGoogleJSStyleWithColumns(8)); 706 verifyFormat("export function* f() {\n" 707 " yield 1;\n" 708 "}\n"); 709 verifyFormat("class X {\n" 710 " * generatorMethod() {\n" 711 " yield x;\n" 712 " }\n" 713 "}"); 714 verifyFormat("var x = {\n" 715 " a: function*() {\n" 716 " //\n" 717 " }\n" 718 "}\n"); 719 } 720 721 TEST_F(FormatTestJS, AsyncFunctions) { 722 verifyFormat("async function f() {\n" 723 " let x = 1;\n" 724 " return fetch(x);\n" 725 "}"); 726 verifyFormat("async function f() {\n" 727 " return 1;\n" 728 "}\n" 729 "\n" 730 "function a() {\n" 731 " return 1;\n" 732 "}\n", 733 " async function f() {\n" 734 " return 1;\n" 735 "}\n" 736 "\n" 737 " function a() {\n" 738 " return 1;\n" 739 "} \n"); 740 // clang-format must not insert breaks between async and function, otherwise 741 // automatic semicolon insertion may trigger (in particular in a class body). 742 verifyFormat("async function\n" 743 "hello(\n" 744 " myparamnameiswaytooloooong) {\n" 745 "}", 746 "async function hello(myparamnameiswaytooloooong) {}", 747 getGoogleJSStyleWithColumns(10)); 748 verifyFormat("class C {\n" 749 " async hello(\n" 750 " myparamnameiswaytooloooong) {\n" 751 " }\n" 752 "}", 753 "class C {\n" 754 " async hello(myparamnameiswaytooloooong) {} }", 755 getGoogleJSStyleWithColumns(10)); 756 verifyFormat("async function* f() {\n" 757 " yield fetch(x);\n" 758 "}"); 759 verifyFormat("export async function f() {\n" 760 " return fetch(x);\n" 761 "}"); 762 verifyFormat("let x = async () => f();"); 763 verifyFormat("let x = async function() {\n" 764 " f();\n" 765 "};"); 766 verifyFormat("let x = async();"); 767 verifyFormat("class X {\n" 768 " async asyncMethod() {\n" 769 " return fetch(1);\n" 770 " }\n" 771 "}"); 772 verifyFormat("function initialize() {\n" 773 " // Comment.\n" 774 " return async.then();\n" 775 "}\n"); 776 verifyFormat("for await (const x of y) {\n" 777 " console.log(x);\n" 778 "}\n"); 779 verifyFormat("function asyncLoop() {\n" 780 " for await (const x of y) {\n" 781 " console.log(x);\n" 782 " }\n" 783 "}\n"); 784 } 785 786 TEST_F(FormatTestJS, FunctionParametersTrailingComma) { 787 verifyFormat("function trailingComma(\n" 788 " p1,\n" 789 " p2,\n" 790 " p3,\n" 791 ") {\n" 792 " a; //\n" 793 "}\n", 794 "function trailingComma(p1, p2, p3,) {\n" 795 " a; //\n" 796 "}\n"); 797 verifyFormat("trailingComma(\n" 798 " p1,\n" 799 " p2,\n" 800 " p3,\n" 801 ");\n", 802 "trailingComma(p1, p2, p3,);\n"); 803 verifyFormat("trailingComma(\n" 804 " p1 // hello\n" 805 ");\n", 806 "trailingComma(p1 // hello\n" 807 ");\n"); 808 } 809 810 TEST_F(FormatTestJS, ArrayLiterals) { 811 verifyFormat("var aaaaa: List<SomeThing> =\n" 812 " [new SomeThingAAAAAAAAAAAA(), new SomeThingBBBBBBBBB()];"); 813 verifyFormat("return [\n" 814 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 815 " ccccccccccccccccccccccccccc\n" 816 "];"); 817 verifyFormat("return [\n" 818 " aaaa().bbbbbbbb('A'),\n" 819 " aaaa().bbbbbbbb('B'),\n" 820 " aaaa().bbbbbbbb('C'),\n" 821 "];"); 822 verifyFormat("var someVariable = SomeFunction([\n" 823 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 824 " ccccccccccccccccccccccccccc\n" 825 "]);"); 826 verifyFormat("var someVariable = SomeFunction([\n" 827 " [aaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbb],\n" 828 "]);", 829 getGoogleJSStyleWithColumns(51)); 830 verifyFormat("var someVariable = SomeFunction(aaaa, [\n" 831 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 832 " ccccccccccccccccccccccccccc\n" 833 "]);"); 834 verifyFormat("var someVariable = SomeFunction(\n" 835 " aaaa,\n" 836 " [\n" 837 " aaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 838 " cccccccccccccccccccccccccc\n" 839 " ],\n" 840 " aaaa);"); 841 verifyFormat("var aaaa = aaaaa || // wrap\n" 842 " [];"); 843 844 verifyFormat("someFunction([], {a: a});"); 845 846 verifyFormat("var string = [\n" 847 " 'aaaaaa',\n" 848 " 'bbbbbb',\n" 849 "].join('+');"); 850 } 851 852 TEST_F(FormatTestJS, ColumnLayoutForArrayLiterals) { 853 verifyFormat("var array = [\n" 854 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 855 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 856 "];"); 857 verifyFormat("var array = someFunction([\n" 858 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 859 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 860 "]);"); 861 } 862 863 TEST_F(FormatTestJS, FunctionLiterals) { 864 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 865 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 866 verifyFormat("doFoo(function() {});"); 867 verifyFormat("doFoo(function() { return 1; });", Style); 868 verifyFormat("var func = function() {\n" 869 " return 1;\n" 870 "};"); 871 verifyFormat("var func = //\n" 872 " function() {\n" 873 " return 1;\n" 874 "};"); 875 verifyFormat("return {\n" 876 " body: {\n" 877 " setAttribute: function(key, val) { this[key] = val; },\n" 878 " getAttribute: function(key) { return this[key]; },\n" 879 " style: {direction: ''}\n" 880 " }\n" 881 "};", 882 Style); 883 verifyFormat("abc = xyz ? function() {\n" 884 " return 1;\n" 885 "} : function() {\n" 886 " return -1;\n" 887 "};"); 888 889 verifyFormat("var closure = goog.bind(\n" 890 " function() { // comment\n" 891 " foo();\n" 892 " bar();\n" 893 " },\n" 894 " this, arg1IsReallyLongAndNeedsLineBreaks,\n" 895 " arg3IsReallyLongAndNeedsLineBreaks);"); 896 verifyFormat("var closure = goog.bind(function() { // comment\n" 897 " foo();\n" 898 " bar();\n" 899 "}, this);"); 900 verifyFormat("return {\n" 901 " a: 'E',\n" 902 " b: function() {\n" 903 " return function() {\n" 904 " f(); //\n" 905 " };\n" 906 " }\n" 907 "};"); 908 verifyFormat("{\n" 909 " var someVariable = function(x) {\n" 910 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 911 " };\n" 912 "}"); 913 verifyFormat("someLooooooooongFunction(\n" 914 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 915 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 916 " function(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 917 " // code\n" 918 " });"); 919 920 verifyFormat("return {\n" 921 " a: function SomeFunction() {\n" 922 " // ...\n" 923 " return 1;\n" 924 " }\n" 925 "};"); 926 verifyFormat("this.someObject.doSomething(aaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 927 " .then(goog.bind(function(aaaaaaaaaaa) {\n" 928 " someFunction();\n" 929 " someFunction();\n" 930 " }, this), aaaaaaaaaaaaaaaaa);"); 931 932 verifyFormat("someFunction(goog.bind(function() {\n" 933 " doSomething();\n" 934 " doSomething();\n" 935 "}, this), goog.bind(function() {\n" 936 " doSomething();\n" 937 " doSomething();\n" 938 "}, this));"); 939 940 verifyFormat("SomeFunction(function() {\n" 941 " foo();\n" 942 " bar();\n" 943 "}.bind(this));"); 944 945 verifyFormat("SomeFunction((function() {\n" 946 " foo();\n" 947 " bar();\n" 948 " }).bind(this));"); 949 950 // FIXME: This is bad, we should be wrapping before "function() {". 951 verifyFormat("someFunction(function() {\n" 952 " doSomething(); // break\n" 953 "})\n" 954 " .doSomethingElse(\n" 955 " // break\n" 956 " );"); 957 958 Style.ColumnLimit = 33; 959 verifyFormat("f({a: function() { return 1; }});", Style); 960 Style.ColumnLimit = 32; 961 verifyFormat("f({\n" 962 " a: function() { return 1; }\n" 963 "});", 964 Style); 965 966 } 967 968 TEST_F(FormatTestJS, DontWrapEmptyLiterals) { 969 verifyFormat("(aaaaaaaaaaaaaaaaaaaaa.getData as jasmine.Spy)\n" 970 " .and.returnValue(Observable.of([]));"); 971 verifyFormat("(aaaaaaaaaaaaaaaaaaaaa.getData as jasmine.Spy)\n" 972 " .and.returnValue(Observable.of({}));"); 973 verifyFormat("(aaaaaaaaaaaaaaaaaaaaa.getData as jasmine.Spy)\n" 974 " .and.returnValue(Observable.of(()));"); 975 } 976 977 TEST_F(FormatTestJS, InliningFunctionLiterals) { 978 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 979 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 980 verifyFormat("var func = function() {\n" 981 " return 1;\n" 982 "};", 983 Style); 984 verifyFormat("var func = doSomething(function() { return 1; });", Style); 985 verifyFormat("var outer = function() {\n" 986 " var inner = function() { return 1; }\n" 987 "};", 988 Style); 989 verifyFormat("function outer1(a, b) {\n" 990 " function inner1(a, b) { return a; }\n" 991 "}", 992 Style); 993 994 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 995 verifyFormat("var func = function() { return 1; };", Style); 996 verifyFormat("var func = doSomething(function() { return 1; });", Style); 997 verifyFormat( 998 "var outer = function() { var inner = function() { return 1; } };", 999 Style); 1000 verifyFormat("function outer1(a, b) {\n" 1001 " function inner1(a, b) { return a; }\n" 1002 "}", 1003 Style); 1004 1005 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 1006 verifyFormat("var func = function() {\n" 1007 " return 1;\n" 1008 "};", 1009 Style); 1010 verifyFormat("var func = doSomething(function() {\n" 1011 " return 1;\n" 1012 "});", 1013 Style); 1014 verifyFormat("var outer = function() {\n" 1015 " var inner = function() {\n" 1016 " return 1;\n" 1017 " }\n" 1018 "};", 1019 Style); 1020 verifyFormat("function outer1(a, b) {\n" 1021 " function inner1(a, b) {\n" 1022 " return a;\n" 1023 " }\n" 1024 "}", 1025 Style); 1026 1027 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty; 1028 verifyFormat("var func = function() {\n" 1029 " return 1;\n" 1030 "};", 1031 Style); 1032 } 1033 1034 TEST_F(FormatTestJS, MultipleFunctionLiterals) { 1035 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 1036 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 1037 verifyFormat("promise.then(\n" 1038 " function success() {\n" 1039 " doFoo();\n" 1040 " doBar();\n" 1041 " },\n" 1042 " function error() {\n" 1043 " doFoo();\n" 1044 " doBaz();\n" 1045 " },\n" 1046 " []);\n"); 1047 verifyFormat("promise.then(\n" 1048 " function success() {\n" 1049 " doFoo();\n" 1050 " doBar();\n" 1051 " },\n" 1052 " [],\n" 1053 " function error() {\n" 1054 " doFoo();\n" 1055 " doBaz();\n" 1056 " });\n"); 1057 verifyFormat("promise.then(\n" 1058 " [],\n" 1059 " function success() {\n" 1060 " doFoo();\n" 1061 " doBar();\n" 1062 " },\n" 1063 " function error() {\n" 1064 " doFoo();\n" 1065 " doBaz();\n" 1066 " });\n"); 1067 1068 verifyFormat("getSomeLongPromise()\n" 1069 " .then(function(value) { body(); })\n" 1070 " .thenCatch(function(error) {\n" 1071 " body();\n" 1072 " body();\n" 1073 " });", 1074 Style); 1075 verifyFormat("getSomeLongPromise()\n" 1076 " .then(function(value) {\n" 1077 " body();\n" 1078 " body();\n" 1079 " })\n" 1080 " .thenCatch(function(error) {\n" 1081 " body();\n" 1082 " body();\n" 1083 " });"); 1084 1085 verifyFormat("getSomeLongPromise()\n" 1086 " .then(function(value) { body(); })\n" 1087 " .thenCatch(function(error) { body(); });", 1088 Style); 1089 1090 verifyFormat("return [aaaaaaaaaaaaaaaaaaaaaa]\n" 1091 " .aaaaaaa(function() {\n" 1092 " //\n" 1093 " })\n" 1094 " .bbbbbb();"); 1095 } 1096 1097 TEST_F(FormatTestJS, ArrowFunctions) { 1098 verifyFormat("var x = (a) => {\n" 1099 " return a;\n" 1100 "};"); 1101 verifyFormat("var x = (a) => {\n" 1102 " function y() {\n" 1103 " return 42;\n" 1104 " }\n" 1105 " return a;\n" 1106 "};"); 1107 verifyFormat("var x = (a: type): {some: type} => {\n" 1108 " return a;\n" 1109 "};"); 1110 verifyFormat("var x = (a) => a;"); 1111 verifyFormat("return () => [];"); 1112 verifyFormat("var aaaaaaaaaaaaaaaaaaaa = {\n" 1113 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 1114 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1115 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) =>\n" 1116 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1117 "};"); 1118 verifyFormat("var a = a.aaaaaaa(\n" 1119 " (a: a) => aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) &&\n" 1120 " aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 1121 verifyFormat("var a = a.aaaaaaa(\n" 1122 " (a: a) => aaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) ?\n" 1123 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb) :\n" 1124 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 1125 1126 // FIXME: This is bad, we should be wrapping before "() => {". 1127 verifyFormat("someFunction(() => {\n" 1128 " doSomething(); // break\n" 1129 "})\n" 1130 " .doSomethingElse(\n" 1131 " // break\n" 1132 " );"); 1133 verifyFormat("const f = (x: string|null): string|null => {\n" 1134 " return x;\n" 1135 "}\n"); 1136 } 1137 1138 TEST_F(FormatTestJS, ReturnStatements) { 1139 verifyFormat("function() {\n" 1140 " return [hello, world];\n" 1141 "}"); 1142 } 1143 1144 TEST_F(FormatTestJS, ForLoops) { 1145 verifyFormat("for (var i in [2, 3]) {\n" 1146 "}"); 1147 verifyFormat("for (var i of [2, 3]) {\n" 1148 "}"); 1149 verifyFormat("for (let {a, b} of x) {\n" 1150 "}"); 1151 verifyFormat("for (let {a, b} of [x]) {\n" 1152 "}"); 1153 verifyFormat("for (let [a, b] of [x]) {\n" 1154 "}"); 1155 verifyFormat("for (let {a, b} in x) {\n" 1156 "}"); 1157 } 1158 1159 TEST_F(FormatTestJS, WrapRespectsAutomaticSemicolonInsertion) { 1160 // The following statements must not wrap, as otherwise the program meaning 1161 // would change due to automatic semicolon insertion. 1162 // See http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1. 1163 verifyFormat("return aaaaa;", getGoogleJSStyleWithColumns(10)); 1164 verifyFormat("yield aaaaa;", getGoogleJSStyleWithColumns(10)); 1165 verifyFormat("return /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 1166 verifyFormat("continue aaaaa;", getGoogleJSStyleWithColumns(10)); 1167 verifyFormat("continue /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 1168 verifyFormat("break aaaaa;", getGoogleJSStyleWithColumns(10)); 1169 verifyFormat("throw aaaaa;", getGoogleJSStyleWithColumns(10)); 1170 verifyFormat("aaaaaaaaa++;", getGoogleJSStyleWithColumns(10)); 1171 verifyFormat("aaaaaaaaa--;", getGoogleJSStyleWithColumns(10)); 1172 verifyFormat("return [\n" 1173 " aaa\n" 1174 "];", 1175 getGoogleJSStyleWithColumns(12)); 1176 verifyFormat("class X {\n" 1177 " readonly ratherLongField =\n" 1178 " 1;\n" 1179 "}", 1180 "class X {\n" 1181 " readonly ratherLongField = 1;\n" 1182 "}", 1183 getGoogleJSStyleWithColumns(20)); 1184 verifyFormat("const x = (5 + 9)\n" 1185 "const y = 3\n", 1186 "const x = ( 5 + 9)\n" 1187 "const y = 3\n"); 1188 // Ideally the foo() bit should be indented relative to the async function(). 1189 verifyFormat("async function\n" 1190 "foo() {}", 1191 getGoogleJSStyleWithColumns(10)); 1192 verifyFormat("await theReckoning;", getGoogleJSStyleWithColumns(10)); 1193 verifyFormat("some['a']['b']", getGoogleJSStyleWithColumns(10)); 1194 verifyFormat("x = (a['a']\n" 1195 " ['b']);", 1196 getGoogleJSStyleWithColumns(10)); 1197 verifyFormat("function f() {\n" 1198 " return foo.bar(\n" 1199 " (param): param is {\n" 1200 " a: SomeType\n" 1201 " }&ABC => 1)\n" 1202 "}", 1203 getGoogleJSStyleWithColumns(25)); 1204 } 1205 1206 TEST_F(FormatTestJS, AddsIsTheDictKeyOnNewline) { 1207 // Do not confuse is, the dict key with is, the type matcher. Put is, the dict 1208 // key, on a newline. 1209 verifyFormat("Polymer({\n" 1210 " is: '', //\n" 1211 " rest: 1\n" 1212 "});", 1213 getGoogleJSStyleWithColumns(20)); 1214 } 1215 1216 TEST_F(FormatTestJS, AutomaticSemicolonInsertionHeuristic) { 1217 verifyFormat("a\n" 1218 "b;", 1219 " a \n" 1220 " b ;"); 1221 verifyFormat("a()\n" 1222 "b;", 1223 " a ()\n" 1224 " b ;"); 1225 verifyFormat("a[b]\n" 1226 "c;", 1227 "a [b]\n" 1228 "c ;"); 1229 verifyFormat("1\n" 1230 "a;", 1231 "1 \n" 1232 "a ;"); 1233 verifyFormat("a\n" 1234 "1;", 1235 "a \n" 1236 "1 ;"); 1237 verifyFormat("a\n" 1238 "'x';", 1239 "a \n" 1240 " 'x';"); 1241 verifyFormat("a++\n" 1242 "b;", 1243 "a ++\n" 1244 "b ;"); 1245 verifyFormat("a\n" 1246 "!b && c;", 1247 "a \n" 1248 " ! b && c;"); 1249 verifyFormat("a\n" 1250 "if (1) f();", 1251 " a\n" 1252 " if (1) f();"); 1253 verifyFormat("a\n" 1254 "class X {}", 1255 " a\n" 1256 " class X {}"); 1257 verifyFormat("var a", "var\n" 1258 "a"); 1259 verifyFormat("x instanceof String", "x\n" 1260 "instanceof\n" 1261 "String"); 1262 verifyFormat("function f(@Foo bar) {}", "function f(@Foo\n" 1263 " bar) {}"); 1264 verifyFormat("function f(@Foo(Param) bar) {}", "function f(@Foo(Param)\n" 1265 " bar) {}"); 1266 verifyFormat("a = true\n" 1267 "return 1", 1268 "a = true\n" 1269 " return 1"); 1270 verifyFormat("a = 's'\n" 1271 "return 1", 1272 "a = 's'\n" 1273 " return 1"); 1274 verifyFormat("a = null\n" 1275 "return 1", 1276 "a = null\n" 1277 " return 1"); 1278 // Below "class Y {}" should ideally be on its own line. 1279 verifyFormat( 1280 "x = {\n" 1281 " a: 1\n" 1282 "} class Y {}", 1283 " x = {a : 1}\n" 1284 " class Y { }"); 1285 verifyFormat( 1286 "if (x) {\n" 1287 "}\n" 1288 "return 1", 1289 "if (x) {}\n" 1290 " return 1"); 1291 verifyFormat( 1292 "if (x) {\n" 1293 "}\n" 1294 "class X {}", 1295 "if (x) {}\n" 1296 " class X {}"); 1297 } 1298 1299 TEST_F(FormatTestJS, ImportExportASI) { 1300 verifyFormat( 1301 "import {x} from 'y'\n" 1302 "export function z() {}", 1303 "import {x} from 'y'\n" 1304 " export function z() {}"); 1305 // Below "class Y {}" should ideally be on its own line. 1306 verifyFormat( 1307 "export {x} class Y {}", 1308 " export {x}\n" 1309 " class Y {\n}"); 1310 verifyFormat( 1311 "if (x) {\n" 1312 "}\n" 1313 "export class Y {}", 1314 "if ( x ) { }\n" 1315 " export class Y {}"); 1316 } 1317 1318 TEST_F(FormatTestJS, ClosureStyleCasts) { 1319 verifyFormat("var x = /** @type {foo} */ (bar);"); 1320 } 1321 1322 TEST_F(FormatTestJS, TryCatch) { 1323 verifyFormat("try {\n" 1324 " f();\n" 1325 "} catch (e) {\n" 1326 " g();\n" 1327 "} finally {\n" 1328 " h();\n" 1329 "}"); 1330 1331 // But, of course, "catch" is a perfectly fine function name in JavaScript. 1332 verifyFormat("someObject.catch();"); 1333 verifyFormat("someObject.new();"); 1334 } 1335 1336 TEST_F(FormatTestJS, StringLiteralConcatenation) { 1337 verifyFormat("var literal = 'hello ' +\n" 1338 " 'world';"); 1339 } 1340 1341 TEST_F(FormatTestJS, RegexLiteralClassification) { 1342 // Regex literals. 1343 verifyFormat("var regex = /abc/;"); 1344 verifyFormat("f(/abc/);"); 1345 verifyFormat("f(abc, /abc/);"); 1346 verifyFormat("some_map[/abc/];"); 1347 verifyFormat("var x = a ? /abc/ : /abc/;"); 1348 verifyFormat("for (var i = 0; /abc/.test(s[i]); i++) {\n}"); 1349 verifyFormat("var x = !/abc/.test(y);"); 1350 verifyFormat("var x = foo()! / 10;"); 1351 verifyFormat("var x = a && /abc/.test(y);"); 1352 verifyFormat("var x = a || /abc/.test(y);"); 1353 verifyFormat("var x = a + /abc/.search(y);"); 1354 verifyFormat("/abc/.search(y);"); 1355 verifyFormat("var regexs = {/abc/, /abc/};"); 1356 verifyFormat("return /abc/;"); 1357 1358 // Not regex literals. 1359 verifyFormat("var a = a / 2 + b / 3;"); 1360 verifyFormat("var a = a++ / 2;"); 1361 // Prefix unary can operate on regex literals, not that it makes sense. 1362 verifyFormat("var a = ++/a/;"); 1363 1364 // This is a known issue, regular expressions are incorrectly detected if 1365 // directly following a closing parenthesis. 1366 verifyFormat("if (foo) / bar /.exec(baz);"); 1367 } 1368 1369 TEST_F(FormatTestJS, RegexLiteralSpecialCharacters) { 1370 verifyFormat("var regex = /=/;"); 1371 verifyFormat("var regex = /a*/;"); 1372 verifyFormat("var regex = /a+/;"); 1373 verifyFormat("var regex = /a?/;"); 1374 verifyFormat("var regex = /.a./;"); 1375 verifyFormat("var regex = /a\\*/;"); 1376 verifyFormat("var regex = /^a$/;"); 1377 verifyFormat("var regex = /\\/a/;"); 1378 verifyFormat("var regex = /(?:x)/;"); 1379 verifyFormat("var regex = /x(?=y)/;"); 1380 verifyFormat("var regex = /x(?!y)/;"); 1381 verifyFormat("var regex = /x|y/;"); 1382 verifyFormat("var regex = /a{2}/;"); 1383 verifyFormat("var regex = /a{1,3}/;"); 1384 1385 verifyFormat("var regex = /[abc]/;"); 1386 verifyFormat("var regex = /[^abc]/;"); 1387 verifyFormat("var regex = /[\\b]/;"); 1388 verifyFormat("var regex = /[/]/;"); 1389 verifyFormat("var regex = /[\\/]/;"); 1390 verifyFormat("var regex = /\\[/;"); 1391 verifyFormat("var regex = /\\\\[/]/;"); 1392 verifyFormat("var regex = /}[\"]/;"); 1393 verifyFormat("var regex = /}[/\"]/;"); 1394 verifyFormat("var regex = /}[\"/]/;"); 1395 1396 verifyFormat("var regex = /\\b/;"); 1397 verifyFormat("var regex = /\\B/;"); 1398 verifyFormat("var regex = /\\d/;"); 1399 verifyFormat("var regex = /\\D/;"); 1400 verifyFormat("var regex = /\\f/;"); 1401 verifyFormat("var regex = /\\n/;"); 1402 verifyFormat("var regex = /\\r/;"); 1403 verifyFormat("var regex = /\\s/;"); 1404 verifyFormat("var regex = /\\S/;"); 1405 verifyFormat("var regex = /\\t/;"); 1406 verifyFormat("var regex = /\\v/;"); 1407 verifyFormat("var regex = /\\w/;"); 1408 verifyFormat("var regex = /\\W/;"); 1409 verifyFormat("var regex = /a(a)\\1/;"); 1410 verifyFormat("var regex = /\\0/;"); 1411 verifyFormat("var regex = /\\\\/g;"); 1412 verifyFormat("var regex = /\\a\\\\/g;"); 1413 verifyFormat("var regex = /\a\\//g;"); 1414 verifyFormat("var regex = /a\\//;\n" 1415 "var x = 0;"); 1416 verifyFormat("var regex = /'/g;", "var regex = /'/g ;"); 1417 verifyFormat("var regex = /'/g; //'", "var regex = /'/g ; //'"); 1418 verifyFormat("var regex = /\\/*/;\n" 1419 "var x = 0;", 1420 "var regex = /\\/*/;\n" 1421 "var x=0;"); 1422 verifyFormat("var x = /a\\//;", "var x = /a\\// \n;"); 1423 verifyFormat("var regex = /\"/;", getGoogleJSStyleWithColumns(16)); 1424 verifyFormat("var regex =\n" 1425 " /\"/;", 1426 getGoogleJSStyleWithColumns(15)); 1427 verifyFormat("var regex = //\n" 1428 " /a/;"); 1429 verifyFormat("var regexs = [\n" 1430 " /d/, //\n" 1431 " /aa/, //\n" 1432 "];"); 1433 } 1434 1435 TEST_F(FormatTestJS, RegexLiteralModifiers) { 1436 verifyFormat("var regex = /abc/g;"); 1437 verifyFormat("var regex = /abc/i;"); 1438 verifyFormat("var regex = /abc/m;"); 1439 verifyFormat("var regex = /abc/y;"); 1440 } 1441 1442 TEST_F(FormatTestJS, RegexLiteralLength) { 1443 verifyFormat("var regex = /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1444 getGoogleJSStyleWithColumns(60)); 1445 verifyFormat("var regex =\n" 1446 " /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1447 getGoogleJSStyleWithColumns(60)); 1448 verifyFormat("var regex = /\\xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1449 getGoogleJSStyleWithColumns(50)); 1450 } 1451 1452 TEST_F(FormatTestJS, RegexLiteralExamples) { 1453 verifyFormat("var regex = search.match(/(?:\?|&)times=([^?&]+)/i);"); 1454 } 1455 1456 TEST_F(FormatTestJS, IgnoresMpegTS) { 1457 std::string MpegTS(200, ' '); 1458 MpegTS.replace(0, strlen("nearlyLooks + like + ts + code; "), 1459 "nearlyLooks + like + ts + code; "); 1460 MpegTS[0] = 0x47; 1461 MpegTS[188] = 0x47; 1462 verifyFormat(MpegTS, MpegTS); 1463 } 1464 1465 TEST_F(FormatTestJS, TypeAnnotations) { 1466 verifyFormat("var x: string;"); 1467 verifyFormat("var x: {a: string; b: number;} = {};"); 1468 verifyFormat("function x(): string {\n return 'x';\n}"); 1469 verifyFormat("function x(): {x: string} {\n return {x: 'x'};\n}"); 1470 verifyFormat("function x(y: string): string {\n return 'x';\n}"); 1471 verifyFormat("for (var y: string in x) {\n x();\n}"); 1472 verifyFormat("for (var y: string of x) {\n x();\n}"); 1473 verifyFormat("function x(y: {a?: number;} = {}): number {\n" 1474 " return 12;\n" 1475 "}"); 1476 verifyFormat("const x: Array<{a: number; b: string;}> = [];"); 1477 verifyFormat("((a: string, b: number): string => a + b);"); 1478 verifyFormat("var x: (y: number) => string;"); 1479 verifyFormat("var x: P<string, (a: number) => string>;"); 1480 verifyFormat("var x = {\n" 1481 " y: function(): z {\n" 1482 " return 1;\n" 1483 " }\n" 1484 "};"); 1485 verifyFormat("var x = {\n" 1486 " y: function(): {a: number} {\n" 1487 " return 1;\n" 1488 " }\n" 1489 "};"); 1490 verifyFormat("function someFunc(args: string[]):\n" 1491 " {longReturnValue: string[]} {}", 1492 getGoogleJSStyleWithColumns(60)); 1493 verifyFormat( 1494 "var someValue = (v as aaaaaaaaaaaaaaaaaaaa<T>[])\n" 1495 " .someFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 1496 verifyFormat("const xIsALongIdent:\n"" YJustBarelyFitsLinex[];", 1497 getGoogleJSStyleWithColumns(20)); 1498 verifyFormat("const x = {\n" 1499 " y: 1\n" 1500 "} as const;"); 1501 } 1502 1503 TEST_F(FormatTestJS, UnionIntersectionTypes) { 1504 verifyFormat("let x: A|B = A | B;"); 1505 verifyFormat("let x: A&B|C = A & B;"); 1506 verifyFormat("let x: Foo<A|B> = new Foo<A|B>();"); 1507 verifyFormat("function(x: A|B): C&D {}"); 1508 verifyFormat("function(x: A|B = A | B): C&D {}"); 1509 verifyFormat("function x(path: number|string) {}"); 1510 verifyFormat("function x(): string|number {}"); 1511 verifyFormat("type Foo = Bar|Baz;"); 1512 verifyFormat("type Foo = Bar<X>|Baz;"); 1513 verifyFormat("type Foo = (Bar<X>|Baz);"); 1514 verifyFormat("let x: Bar|Baz;"); 1515 verifyFormat("let x: Bar<X>|Baz;"); 1516 verifyFormat("let x: (Foo|Bar)[];"); 1517 verifyFormat("type X = {\n" 1518 " a: Foo|Bar;\n" 1519 "};"); 1520 verifyFormat("export type X = {\n" 1521 " a: Foo|Bar;\n" 1522 "};"); 1523 } 1524 1525 TEST_F(FormatTestJS, UnionIntersectionTypesInObjectType) { 1526 verifyFormat("let x: {x: number|null} = {x: number | null};"); 1527 verifyFormat("let nested: {x: {y: number|null}};"); 1528 verifyFormat("let mixed: {x: [number|null, {w: number}]};"); 1529 verifyFormat("class X {\n" 1530 " contructor(x: {\n" 1531 " a: a|null,\n" 1532 " b: b|null,\n" 1533 " }) {}\n" 1534 "}"); 1535 } 1536 1537 TEST_F(FormatTestJS, ClassDeclarations) { 1538 verifyFormat("class C {\n x: string = 12;\n}"); 1539 verifyFormat("class C {\n x(): string => 12;\n}"); 1540 verifyFormat("class C {\n ['x' + 2]: string = 12;\n}"); 1541 verifyFormat("class C {\n" 1542 " foo() {}\n" 1543 " [bar]() {}\n" 1544 "}\n"); 1545 verifyFormat("class C {\n private x: string = 12;\n}"); 1546 verifyFormat("class C {\n private static x: string = 12;\n}"); 1547 verifyFormat("class C {\n static x(): string {\n return 'asd';\n }\n}"); 1548 verifyFormat("class C extends P implements I {}"); 1549 verifyFormat("class C extends p.P implements i.I {}"); 1550 verifyFormat( 1551 "x(class {\n" 1552 " a(): A {}\n" 1553 "});"); 1554 verifyFormat("class Test {\n" 1555 " aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaaa):\n" 1556 " aaaaaaaaaaaaaaaaaaaaaa {}\n" 1557 "}"); 1558 verifyFormat("foo = class Name {\n" 1559 " constructor() {}\n" 1560 "};"); 1561 verifyFormat("foo = class {\n" 1562 " constructor() {}\n" 1563 "};"); 1564 verifyFormat("class C {\n" 1565 " x: {y: Z;} = {};\n" 1566 " private y: {y: Z;} = {};\n" 1567 "}"); 1568 1569 // ':' is not a type declaration here. 1570 verifyFormat("class X {\n" 1571 " subs = {\n" 1572 " 'b': {\n" 1573 " 'c': 1,\n" 1574 " },\n" 1575 " };\n" 1576 "}"); 1577 verifyFormat("@Component({\n" 1578 " moduleId: module.id,\n" 1579 "})\n" 1580 "class SessionListComponent implements OnDestroy, OnInit {\n" 1581 "}"); 1582 } 1583 1584 TEST_F(FormatTestJS, StrictPropInitWrap) { 1585 const FormatStyle &Style = getGoogleJSStyleWithColumns(22); 1586 verifyFormat("class X {\n" 1587 " strictPropInitField!:\n" 1588 " string;\n" 1589 "}", 1590 Style); 1591 } 1592 1593 TEST_F(FormatTestJS, InterfaceDeclarations) { 1594 verifyFormat("interface I {\n" 1595 " x: string;\n" 1596 " enum: string[];\n" 1597 " enum?: string[];\n" 1598 "}\n" 1599 "var y;"); 1600 // Ensure that state is reset after parsing the interface. 1601 verifyFormat("interface a {}\n" 1602 "export function b() {}\n" 1603 "var x;"); 1604 1605 // Arrays of object type literals. 1606 verifyFormat("interface I {\n" 1607 " o: {}[];\n" 1608 "}"); 1609 } 1610 1611 TEST_F(FormatTestJS, ObjectTypesInExtendsImplements) { 1612 verifyFormat("class C extends {} {}"); 1613 verifyFormat("class C implements {bar: number} {}"); 1614 // Somewhat odd, but probably closest to reasonable formatting? 1615 verifyFormat("class C implements {\n" 1616 " bar: number,\n" 1617 " baz: string,\n" 1618 "} {}"); 1619 verifyFormat("class C<P extends {}> {}"); 1620 } 1621 1622 TEST_F(FormatTestJS, EnumDeclarations) { 1623 verifyFormat("enum Foo {\n" 1624 " A = 1,\n" 1625 " B\n" 1626 "}"); 1627 verifyFormat("export /* somecomment*/ enum Foo {\n" 1628 " A = 1,\n" 1629 " B\n" 1630 "}"); 1631 verifyFormat("enum Foo {\n" 1632 " A = 1, // comment\n" 1633 " B\n" 1634 "}\n" 1635 "var x = 1;"); 1636 verifyFormat("const enum Foo {\n" 1637 " A = 1,\n" 1638 " B\n" 1639 "}"); 1640 verifyFormat("export const enum Foo {\n" 1641 " A = 1,\n" 1642 " B\n" 1643 "}"); 1644 } 1645 1646 TEST_F(FormatTestJS, Decorators) { 1647 verifyFormat("@A\nclass C {\n}"); 1648 verifyFormat("@A({arg: 'value'})\nclass C {\n}"); 1649 verifyFormat("@A\n@B\nclass C {\n}"); 1650 verifyFormat("class C {\n @A x: string;\n}"); 1651 verifyFormat("class C {\n" 1652 " @A\n" 1653 " private x(): string {\n" 1654 " return 'y';\n" 1655 " }\n" 1656 "}"); 1657 verifyFormat("class C {\n" 1658 " private x(@A x: string) {}\n" 1659 "}"); 1660 verifyFormat("class X {}\n" 1661 "class Y {}"); 1662 verifyFormat("class X {\n" 1663 " @property() private isReply = false;\n" 1664 "}\n"); 1665 } 1666 1667 TEST_F(FormatTestJS, TypeAliases) { 1668 verifyFormat("type X = number;\n" 1669 "class C {}"); 1670 verifyFormat("type X<Y> = Z<Y>;"); 1671 verifyFormat("type X = {\n" 1672 " y: number\n" 1673 "};\n" 1674 "class C {}"); 1675 verifyFormat("export type X = {\n" 1676 " a: string,\n" 1677 " b?: string,\n" 1678 "};\n"); 1679 } 1680 1681 TEST_F(FormatTestJS, TypeInterfaceLineWrapping) { 1682 const FormatStyle &Style = getGoogleJSStyleWithColumns(20); 1683 verifyFormat("type LongTypeIsReallyUnreasonablyLong =\n" 1684 " string;\n", 1685 "type LongTypeIsReallyUnreasonablyLong = string;\n", 1686 Style); 1687 verifyFormat( 1688 "interface AbstractStrategyFactoryProvider {\n" 1689 " a: number\n" 1690 "}\n", 1691 "interface AbstractStrategyFactoryProvider { a: number }\n", 1692 Style); 1693 } 1694 1695 TEST_F(FormatTestJS, RemoveEmptyLinesInArrowFunctions) { 1696 verifyFormat("x = () => {\n" 1697 " foo();\n" 1698 "};\n", 1699 "x = () => {\n" 1700 "\n" 1701 " foo();\n" 1702 "\n" 1703 "};\n"); 1704 } 1705 1706 TEST_F(FormatTestJS, Modules) { 1707 verifyFormat("import SomeThing from 'some/module.js';"); 1708 verifyFormat("import {X, Y} from 'some/module.js';"); 1709 verifyFormat("import a, {X, Y} from 'some/module.js';"); 1710 verifyFormat("import {X, Y,} from 'some/module.js';"); 1711 verifyFormat("import {X as myLocalX, Y as myLocalY} from 'some/module.js';"); 1712 // Ensure Automatic Semicolon Insertion does not break on "as\n". 1713 verifyFormat("import {X as myX} from 'm';", "import {X as\n" 1714 " myX} from 'm';"); 1715 verifyFormat("import * as lib from 'some/module.js';"); 1716 verifyFormat("var x = {import: 1};\nx.import = 2;"); 1717 1718 verifyFormat("export function fn() {\n" 1719 " return 'fn';\n" 1720 "}"); 1721 verifyFormat("export function A() {}\n" 1722 "export default function B() {}\n" 1723 "export function C() {}"); 1724 verifyFormat("export default () => {\n" 1725 " let x = 1;\n" 1726 " return x;\n" 1727 "}"); 1728 verifyFormat("export const x = 12;"); 1729 verifyFormat("export default class X {}"); 1730 verifyFormat("export {X, Y} from 'some/module.js';"); 1731 verifyFormat("export {X, Y,} from 'some/module.js';"); 1732 verifyFormat("export {SomeVeryLongExport as X, " 1733 "SomeOtherVeryLongExport as Y} from 'some/module.js';"); 1734 // export without 'from' is wrapped. 1735 verifyFormat("export let someRatherLongVariableName =\n" 1736 " someSurprisinglyLongVariable + someOtherRatherLongVar;"); 1737 // ... but not if from is just an identifier. 1738 verifyFormat("export {\n" 1739 " from as from,\n" 1740 " someSurprisinglyLongVariable as\n" 1741 " from\n" 1742 "};", 1743 getGoogleJSStyleWithColumns(20)); 1744 verifyFormat("export class C {\n" 1745 " x: number;\n" 1746 " y: string;\n" 1747 "}"); 1748 verifyFormat("export class X {\n" 1749 " y: number;\n" 1750 "}"); 1751 verifyFormat("export abstract class X {\n" 1752 " y: number;\n" 1753 "}"); 1754 verifyFormat("export default class X {\n" 1755 " y: number\n" 1756 "}"); 1757 verifyFormat("export default function() {\n return 1;\n}"); 1758 verifyFormat("export var x = 12;"); 1759 verifyFormat("class C {}\n" 1760 "export function f() {}\n" 1761 "var v;"); 1762 verifyFormat("export var x: number = 12;"); 1763 verifyFormat("export const y = {\n" 1764 " a: 1,\n" 1765 " b: 2\n" 1766 "};"); 1767 verifyFormat("export enum Foo {\n" 1768 " BAR,\n" 1769 " // adsdasd\n" 1770 " BAZ\n" 1771 "}"); 1772 verifyFormat("export default [\n" 1773 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1774 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 1775 "];"); 1776 verifyFormat("export default [];"); 1777 verifyFormat("export default () => {};"); 1778 verifyFormat("export interface Foo {\n" 1779 " foo: number;\n" 1780 "}\n" 1781 "export class Bar {\n" 1782 " blah(): string {\n" 1783 " return this.blah;\n" 1784 " };\n" 1785 "}"); 1786 } 1787 1788 TEST_F(FormatTestJS, ImportWrapping) { 1789 verifyFormat("import {VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying," 1790 " VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying" 1791 "} from 'some/module.js';"); 1792 FormatStyle Style = getGoogleJSStyleWithColumns(80); 1793 Style.JavaScriptWrapImports = true; 1794 verifyFormat("import {\n" 1795 " VeryLongImportsAreAnnoying,\n" 1796 " VeryLongImportsAreAnnoying,\n" 1797 " VeryLongImportsAreAnnoying,\n" 1798 "} from 'some/module.js';", 1799 Style); 1800 verifyFormat("import {\n" 1801 " A,\n" 1802 " A,\n" 1803 "} from 'some/module.js';", 1804 Style); 1805 verifyFormat("export {\n" 1806 " A,\n" 1807 " A,\n" 1808 "} from 'some/module.js';", 1809 Style); 1810 Style.ColumnLimit = 40; 1811 // Using this version of verifyFormat because test::messUp hides the issue. 1812 verifyFormat("import {\n" 1813 " A,\n" 1814 "} from\n" 1815 " 'some/path/longer/than/column/limit/module.js';", 1816 " import { \n" 1817 " A, \n" 1818 " } from\n" 1819 " 'some/path/longer/than/column/limit/module.js' ; ", 1820 Style); 1821 } 1822 1823 TEST_F(FormatTestJS, TemplateStrings) { 1824 // Keeps any whitespace/indentation within the template string. 1825 verifyFormat("var x = `hello\n" 1826 " ${name}\n" 1827 " !`;", 1828 "var x = `hello\n" 1829 " ${ name }\n" 1830 " !`;"); 1831 1832 verifyFormat("var x =\n" 1833 " `hello ${world}` >= some();", 1834 getGoogleJSStyleWithColumns(34)); // Barely doesn't fit. 1835 verifyFormat("var x = `hello ${world}` >= some();", 1836 getGoogleJSStyleWithColumns(35)); // Barely fits. 1837 verifyFormat("var x = `hellö ${wörld}` >= söme();", 1838 getGoogleJSStyleWithColumns(35)); // Fits due to UTF-8. 1839 verifyFormat("var x = `hello\n" 1840 " ${world}` >=\n" 1841 " some();", 1842 "var x =\n" 1843 " `hello\n" 1844 " ${world}` >= some();", 1845 getGoogleJSStyleWithColumns(21)); // Barely doesn't fit. 1846 verifyFormat("var x = `hello\n" 1847 " ${world}` >= some();", 1848 "var x =\n" 1849 " `hello\n" 1850 " ${world}` >= some();", 1851 getGoogleJSStyleWithColumns(22)); // Barely fits. 1852 1853 verifyFormat("var x =\n" 1854 " `h`;", 1855 getGoogleJSStyleWithColumns(11)); 1856 verifyFormat("var x =\n `multi\n line`;", "var x = `multi\n line`;", 1857 getGoogleJSStyleWithColumns(13)); 1858 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1859 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`);"); 1860 // Repro for an obscure width-miscounting issue with template strings. 1861 verifyFormat( 1862 "someLongVariable =\n" 1863 " " 1864 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;", 1865 "someLongVariable = " 1866 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;"); 1867 1868 // Make sure template strings get a proper ColumnWidth assigned, even if they 1869 // are first token in line. 1870 verifyFormat( 1871 "var a = aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 1872 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`;"); 1873 1874 // Two template strings. 1875 verifyFormat("var x = `hello` == `hello`;"); 1876 1877 // Comments in template strings. 1878 verifyFormat("var x = `//a`;\n" 1879 "var y;", 1880 "var x =\n `//a`;\n" 1881 "var y ;"); 1882 verifyFormat("var x = `/*a`;\n" 1883 "var y;", 1884 "var x =\n `/*a`;\n" 1885 "var y;"); 1886 // Unterminated string literals in a template string. 1887 verifyFormat("var x = `'`; // comment with matching quote '\n" 1888 "var y;"); 1889 verifyFormat("var x = `\"`; // comment with matching quote \"\n" 1890 "var y;"); 1891 verifyFormat("it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa);", 1892 "it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa) ;", 1893 getGoogleJSStyleWithColumns(40)); 1894 // Backticks in a comment - not a template string. 1895 verifyFormat("var x = 1 // `/*a`;\n" 1896 " ;", 1897 "var x =\n 1 // `/*a`;\n" 1898 " ;"); 1899 verifyFormat("/* ` */ var x = 1; /* ` */", "/* ` */ var x\n= 1; /* ` */"); 1900 // Comment spans multiple template strings. 1901 verifyFormat("var x = `/*a`;\n" 1902 "var y = ` */ `;", 1903 "var x =\n `/*a`;\n" 1904 "var y =\n ` */ `;"); 1905 // Escaped backtick. 1906 verifyFormat("var x = ` \\` a`;\n" 1907 "var y;", 1908 "var x = ` \\` a`;\n" 1909 "var y;"); 1910 // Escaped dollar. 1911 verifyFormat("var x = ` \\${foo}`;\n"); 1912 1913 // The token stream can contain two string_literals in sequence, but that 1914 // doesn't mean that they are implicitly concatenated in JavaScript. 1915 verifyFormat("var f = `aaaa ${a ? 'a' : 'b'}`;"); 1916 1917 // Ensure that scopes are appropriately set around evaluated expressions in 1918 // template strings. 1919 verifyFormat("var f = `aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa\n" 1920 " aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa`;", 1921 "var f = `aaaaaaaaaaaaa:${aaaaaaa. aaaaa} aaaaaaaa\n" 1922 " aaaaaaaaaaaaa:${ aaaaaaa. aaaaa} aaaaaaaa`;"); 1923 verifyFormat("var x = someFunction(`${})`) //\n" 1924 " .oooooooooooooooooon();"); 1925 verifyFormat("var x = someFunction(`${aaaa}${\n" 1926 " aaaaa( //\n" 1927 " aaaaa)})`);"); 1928 } 1929 1930 TEST_F(FormatTestJS, TemplateStringMultiLineExpression) { 1931 verifyFormat("var f = `aaaaaaaaaaaaaaaaaa: ${\n" 1932 " aaaaa + //\n" 1933 " bbbb}`;", 1934 "var f = `aaaaaaaaaaaaaaaaaa: ${aaaaa + //\n" 1935 " bbbb}`;"); 1936 verifyFormat("var f = `\n" 1937 " aaaaaaaaaaaaaaaaaa: ${\n" 1938 " aaaaa + //\n" 1939 " bbbb}`;", 1940 "var f = `\n" 1941 " aaaaaaaaaaaaaaaaaa: ${ aaaaa + //\n" 1942 " bbbb }`;"); 1943 verifyFormat("var f = `\n" 1944 " aaaaaaaaaaaaaaaaaa: ${\n" 1945 " someFunction(\n" 1946 " aaaaa + //\n" 1947 " bbbb)}`;", 1948 "var f = `\n" 1949 " aaaaaaaaaaaaaaaaaa: ${someFunction (\n" 1950 " aaaaa + //\n" 1951 " bbbb)}`;"); 1952 1953 // It might be preferable to wrap before "someFunction". 1954 verifyFormat("var f = `\n" 1955 " aaaaaaaaaaaaaaaaaa: ${someFunction({\n" 1956 " aaaa: aaaaa,\n" 1957 " bbbb: bbbbb,\n" 1958 "})}`;", 1959 "var f = `\n" 1960 " aaaaaaaaaaaaaaaaaa: ${someFunction ({\n" 1961 " aaaa: aaaaa,\n" 1962 " bbbb: bbbbb,\n" 1963 " })}`;"); 1964 } 1965 1966 TEST_F(FormatTestJS, TemplateStringASI) { 1967 verifyFormat("var x = `hello${world}`;", "var x = `hello${\n" 1968 " world\n" 1969 "}`;"); 1970 } 1971 1972 TEST_F(FormatTestJS, NestedTemplateStrings) { 1973 verifyFormat( 1974 "var x = `<ul>${xs.map(x => `<li>${x}</li>`).join('\\n')}</ul>`;"); 1975 verifyFormat("var x = `he${({text: 'll'}.text)}o`;"); 1976 1977 // Crashed at some point. 1978 verifyFormat("}"); 1979 } 1980 1981 TEST_F(FormatTestJS, TaggedTemplateStrings) { 1982 verifyFormat("var x = html`<ul>`;"); 1983 verifyFormat("yield `hello`;"); 1984 verifyFormat("var f = {\n" 1985 " param: longTagName`This is a ${\n" 1986 " 'really'} long line`\n" 1987 "};", 1988 "var f = {param: longTagName`This is a ${'really'} long line`};", 1989 getGoogleJSStyleWithColumns(40)); 1990 } 1991 1992 TEST_F(FormatTestJS, CastSyntax) { 1993 verifyFormat("var x = <type>foo;"); 1994 verifyFormat("var x = foo as type;"); 1995 verifyFormat("let x = (a + b) as\n" 1996 " LongTypeIsLong;", 1997 getGoogleJSStyleWithColumns(20)); 1998 verifyFormat("foo = <Bar[]>[\n" 1999 " 1, //\n" 2000 " 2\n" 2001 "];"); 2002 verifyFormat("var x = [{x: 1} as type];"); 2003 verifyFormat("x = x as [a, b];"); 2004 verifyFormat("x = x as {a: string};"); 2005 verifyFormat("x = x as (string);"); 2006 verifyFormat("x = x! as (string);"); 2007 verifyFormat("x = y! in z;"); 2008 verifyFormat("var x = something.someFunction() as\n" 2009 " something;", 2010 getGoogleJSStyleWithColumns(40)); 2011 } 2012 2013 TEST_F(FormatTestJS, TypeArguments) { 2014 verifyFormat("class X<Y> {}"); 2015 verifyFormat("new X<Y>();"); 2016 verifyFormat("foo<Y>(a);"); 2017 verifyFormat("var x: X<Y>[];"); 2018 verifyFormat("class C extends D<E> implements F<G>, H<I> {}"); 2019 verifyFormat("function f(a: List<any> = null) {}"); 2020 verifyFormat("function f(): List<any> {}"); 2021 verifyFormat("function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa():\n" 2022 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}"); 2023 verifyFormat("function aaaaaaaaaa(\n" 2024 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa,\n" 2025 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa):\n" 2026 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa {}"); 2027 } 2028 2029 TEST_F(FormatTestJS, UserDefinedTypeGuards) { 2030 verifyFormat( 2031 "function foo(check: Object):\n" 2032 " check is {foo: string, bar: string, baz: string, foobar: string} {\n" 2033 " return 'bar' in check;\n" 2034 "}\n"); 2035 } 2036 2037 TEST_F(FormatTestJS, OptionalTypes) { 2038 verifyFormat("function x(a?: b, c?, d?) {}"); 2039 verifyFormat("class X {\n" 2040 " y?: z;\n" 2041 " z?;\n" 2042 "}"); 2043 verifyFormat("interface X {\n" 2044 " y?(): z;\n" 2045 "}"); 2046 verifyFormat("constructor({aa}: {\n" 2047 " aa?: string,\n" 2048 " aaaaaaaa?: string,\n" 2049 " aaaaaaaaaaaaaaa?: boolean,\n" 2050 " aaaaaa?: List<string>\n" 2051 "}) {}"); 2052 } 2053 2054 TEST_F(FormatTestJS, IndexSignature) { 2055 verifyFormat("var x: {[k: string]: v};"); 2056 } 2057 2058 TEST_F(FormatTestJS, WrapAfterParen) { 2059 verifyFormat("xxxxxxxxxxx(\n" 2060 " aaa, aaa);", 2061 getGoogleJSStyleWithColumns(20)); 2062 verifyFormat("xxxxxxxxxxx(\n" 2063 " aaa, aaa, aaa,\n" 2064 " aaa, aaa, aaa);", 2065 getGoogleJSStyleWithColumns(20)); 2066 verifyFormat("xxxxxxxxxxx(\n" 2067 " aaaaaaaaaaaaaaaaaaaaaaaa,\n" 2068 " function(x) {\n" 2069 " y(); //\n" 2070 " });", 2071 getGoogleJSStyleWithColumns(40)); 2072 verifyFormat("while (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 2073 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 2074 } 2075 2076 TEST_F(FormatTestJS, JSDocAnnotations) { 2077 verifyFormat("/**\n" 2078 " * @exports {this.is.a.long.path.to.a.Type}\n" 2079 " */", 2080 "/**\n" 2081 " * @exports {this.is.a.long.path.to.a.Type}\n" 2082 " */", 2083 getGoogleJSStyleWithColumns(20)); 2084 verifyFormat("/**\n" 2085 " * @mods {this.is.a.long.path.to.a.Type}\n" 2086 " */", 2087 "/**\n" 2088 " * @mods {this.is.a.long.path.to.a.Type}\n" 2089 " */", 2090 getGoogleJSStyleWithColumns(20)); 2091 verifyFormat("/**\n" 2092 " * @mods {this.is.a.long.path.to.a.Type}\n" 2093 " */", 2094 "/**\n" 2095 " * @mods {this.is.a.long.path.to.a.Type}\n" 2096 " */", 2097 getGoogleJSStyleWithColumns(20)); 2098 verifyFormat("/**\n" 2099 " * @param {canWrap\n" 2100 " * onSpace}\n" 2101 " */", 2102 "/**\n" 2103 " * @param {canWrap onSpace}\n" 2104 " */", 2105 getGoogleJSStyleWithColumns(20)); 2106 // make sure clang-format doesn't break before *any* '{' 2107 verifyFormat("/**\n" 2108 " * @lala {lala {lalala\n" 2109 " */\n", 2110 "/**\n" 2111 " * @lala {lala {lalala\n" 2112 " */\n", 2113 getGoogleJSStyleWithColumns(20)); 2114 verifyFormat("/**\n" 2115 " * @see http://very/very/long/url/is/long\n" 2116 " */", 2117 "/**\n" 2118 " * @see http://very/very/long/url/is/long\n" 2119 " */", 2120 getGoogleJSStyleWithColumns(20)); 2121 verifyFormat( 2122 "/**\n" 2123 " * @param This is a\n" 2124 " * long comment\n" 2125 " * but no type\n" 2126 " */", 2127 "/**\n" 2128 " * @param This is a long comment but no type\n" 2129 " */", 2130 getGoogleJSStyleWithColumns(20)); 2131 // Break and reindent @param line and reflow unrelated lines. 2132 EXPECT_EQ("{\n" 2133 " /**\n" 2134 " * long long long\n" 2135 " * long\n" 2136 " * @param {this.is.a.long.path.to.a.Type}\n" 2137 " * a\n" 2138 " * long long long\n" 2139 " * long long\n" 2140 " */\n" 2141 " function f(a) {}\n" 2142 "}", 2143 format("{\n" 2144 "/**\n" 2145 " * long long long long\n" 2146 " * @param {this.is.a.long.path.to.a.Type} a\n" 2147 " * long long long long\n" 2148 " * long\n" 2149 " */\n" 2150 " function f(a) {}\n" 2151 "}", 2152 getGoogleJSStyleWithColumns(20))); 2153 } 2154 2155 TEST_F(FormatTestJS, RequoteStringsSingle) { 2156 verifyFormat("var x = 'foo';", "var x = \"foo\";"); 2157 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo'o'\";"); 2158 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo\\'o'\";"); 2159 verifyFormat( 2160 "var x =\n" 2161 " 'foo\\'';", 2162 // Code below is 15 chars wide, doesn't fit into the line with the 2163 // \ escape added. 2164 "var x = \"foo'\";", getGoogleJSStyleWithColumns(15)); 2165 // Removes no-longer needed \ escape from ". 2166 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";"); 2167 // Code below fits into 15 chars *after* removing the \ escape. 2168 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";", 2169 getGoogleJSStyleWithColumns(15)); 2170 verifyFormat("// clang-format off\n" 2171 "let x = \"double\";\n" 2172 "// clang-format on\n" 2173 "let x = 'single';\n", 2174 "// clang-format off\n" 2175 "let x = \"double\";\n" 2176 "// clang-format on\n" 2177 "let x = \"single\";\n"); 2178 } 2179 2180 TEST_F(FormatTestJS, RequoteAndIndent) { 2181 verifyFormat("let x = someVeryLongFunctionThatGoesOnAndOn(\n" 2182 " 'double quoted string that needs wrapping');", 2183 "let x = someVeryLongFunctionThatGoesOnAndOn(" 2184 "\"double quoted string that needs wrapping\");"); 2185 2186 verifyFormat("let x =\n" 2187 " 'foo\\'oo';\n" 2188 "let x =\n" 2189 " 'foo\\'oo';", 2190 "let x=\"foo'oo\";\n" 2191 "let x=\"foo'oo\";", 2192 getGoogleJSStyleWithColumns(15)); 2193 } 2194 2195 TEST_F(FormatTestJS, RequoteStringsDouble) { 2196 FormatStyle DoubleQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 2197 DoubleQuotes.JavaScriptQuotes = FormatStyle::JSQS_Double; 2198 verifyFormat("var x = \"foo\";", DoubleQuotes); 2199 verifyFormat("var x = \"foo\";", "var x = 'foo';", DoubleQuotes); 2200 verifyFormat("var x = \"fo'o\";", "var x = 'fo\\'o';", DoubleQuotes); 2201 } 2202 2203 TEST_F(FormatTestJS, RequoteStringsLeave) { 2204 FormatStyle LeaveQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 2205 LeaveQuotes.JavaScriptQuotes = FormatStyle::JSQS_Leave; 2206 verifyFormat("var x = \"foo\";", LeaveQuotes); 2207 verifyFormat("var x = 'foo';", LeaveQuotes); 2208 } 2209 2210 TEST_F(FormatTestJS, SupportShebangLines) { 2211 verifyFormat("#!/usr/bin/env node\n" 2212 "var x = hello();", 2213 "#!/usr/bin/env node\n" 2214 "var x = hello();"); 2215 } 2216 2217 TEST_F(FormatTestJS, NonNullAssertionOperator) { 2218 verifyFormat("let x = foo!.bar();\n"); 2219 verifyFormat("let x = foo ? bar! : baz;\n"); 2220 verifyFormat("let x = !foo;\n"); 2221 verifyFormat("if (!+a) {\n}"); 2222 verifyFormat("let x = foo[0]!;\n"); 2223 verifyFormat("let x = (foo)!;\n"); 2224 verifyFormat("let x = x(foo!);\n"); 2225 verifyFormat( 2226 "a.aaaaaa(a.a!).then(\n" 2227 " x => x(x));\n", 2228 getGoogleJSStyleWithColumns(20)); 2229 verifyFormat("let x = foo! - 1;\n"); 2230 verifyFormat("let x = {foo: 1}!;\n"); 2231 verifyFormat( 2232 "let x = hello.foo()!\n" 2233 " .foo()!\n" 2234 " .foo()!\n" 2235 " .foo()!;\n", 2236 getGoogleJSStyleWithColumns(20)); 2237 verifyFormat("let x = namespace!;\n"); 2238 verifyFormat("return !!x;\n"); 2239 } 2240 2241 TEST_F(FormatTestJS, NullPropagatingOperator) { 2242 verifyFormat("let x = foo?.bar?.baz();\n"); 2243 verifyFormat("let x = foo?.(foo);\n"); 2244 verifyFormat("let x = foo?.['arr'];\n"); 2245 } 2246 2247 TEST_F(FormatTestJS, NullishCoalescingOperator) { 2248 verifyFormat("const val = something ?? 'some other default';\n"); 2249 } 2250 2251 TEST_F(FormatTestJS, Conditional) { 2252 verifyFormat("y = x ? 1 : 2;"); 2253 verifyFormat("x ? 1 : 2;"); 2254 verifyFormat("class Foo {\n" 2255 " field = true ? 1 : 2;\n" 2256 " method(a = true ? 1 : 2) {}\n" 2257 "}"); 2258 } 2259 2260 TEST_F(FormatTestJS, ImportComments) { 2261 verifyFormat("import {x} from 'x'; // from some location", 2262 getGoogleJSStyleWithColumns(25)); 2263 verifyFormat("// taze: x from 'location'", getGoogleJSStyleWithColumns(10)); 2264 verifyFormat("/// <reference path=\"some/location\" />", getGoogleJSStyleWithColumns(10)); 2265 } 2266 2267 TEST_F(FormatTestJS, Exponentiation) { 2268 verifyFormat("squared = x ** 2;"); 2269 verifyFormat("squared **= 2;"); 2270 } 2271 2272 TEST_F(FormatTestJS, NestedLiterals) { 2273 FormatStyle FourSpaces = getGoogleJSStyleWithColumns(15); 2274 FourSpaces.IndentWidth = 4; 2275 verifyFormat("var l = [\n" 2276 " [\n" 2277 " 1,\n" 2278 " ],\n" 2279 "];", FourSpaces); 2280 verifyFormat("var l = [\n" 2281 " {\n" 2282 " 1: 1,\n" 2283 " },\n" 2284 "];", FourSpaces); 2285 verifyFormat("someFunction(\n" 2286 " p1,\n" 2287 " [\n" 2288 " 1,\n" 2289 " ],\n" 2290 ");", FourSpaces); 2291 verifyFormat("someFunction(\n" 2292 " p1,\n" 2293 " {\n" 2294 " 1: 1,\n" 2295 " },\n" 2296 ");", FourSpaces); 2297 verifyFormat("var o = {\n" 2298 " 1: 1,\n" 2299 " 2: {\n" 2300 " 3: 3,\n" 2301 " },\n" 2302 "};", FourSpaces); 2303 verifyFormat("var o = {\n" 2304 " 1: 1,\n" 2305 " 2: [\n" 2306 " 3,\n" 2307 " ],\n" 2308 "};", FourSpaces); 2309 } 2310 2311 TEST_F(FormatTestJS, BackslashesInComments) { 2312 verifyFormat("// hello \\\n" 2313 "if (x) foo();\n", 2314 "// hello \\\n" 2315 " if ( x) \n" 2316 " foo();\n"); 2317 verifyFormat("/* ignore \\\n" 2318 " */\n" 2319 "if (x) foo();\n", 2320 "/* ignore \\\n" 2321 " */\n" 2322 " if ( x) foo();\n"); 2323 verifyFormat("// st \\ art\\\n" 2324 "// comment" 2325 "// continue \\\n" 2326 "formatMe();\n", 2327 "// st \\ art\\\n" 2328 "// comment" 2329 "// continue \\\n" 2330 "formatMe( );\n"); 2331 } 2332 2333 TEST_F(FormatTestJS, AddsLastLinePenaltyIfEndingIsBroken) { 2334 EXPECT_EQ( 2335 "a = function() {\n" 2336 " b = function() {\n" 2337 " this.aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa] = aaaa.aaaaaa ?\n" 2338 " aaaa.aaaaaa : /** @type " 2339 "{aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaaaaaaaa} */\n" 2340 " (aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaa.aaaaaaaaaaaaaaaaa);\n" 2341 " };\n" 2342 "};", 2343 format("a = function() {\n" 2344 " b = function() {\n" 2345 " this.aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa] = aaaa.aaaaaa ? " 2346 "aaaa.aaaaaa : /** @type " 2347 "{aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaaaaaaaa} */\n" 2348 " (aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaa.aaaaaaaaaaaaaaaaa);\n" 2349 " };\n" 2350 "};")); 2351 } 2352 2353 TEST_F(FormatTestJS, ParameterNamingComment) { 2354 verifyFormat("callFoo(/*spaceAfterParameterNamingComment=*/ 1);"); 2355 } 2356 2357 TEST_F(FormatTestJS, ConditionalTypes) { 2358 // Formatting below is not necessarily intentional, this just ensures that 2359 // clang-format does not break the code. 2360 verifyFormat( // wrap 2361 "type UnionToIntersection<U> =\n" 2362 " (U extends any ? (k: U) => void :\n" 2363 " never) extends((k: infer I) => void) ? I : never;"); 2364 } 2365 2366 TEST_F(FormatTestJS, SupportPrivateFieldsAndMethods) { 2367 verifyFormat("class Example {\n" 2368 " pub = 1;\n" 2369 " #priv = 2;\n" 2370 " static pub2 = 'foo';\n" 2371 " static #priv2 = 'bar';\n" 2372 " method() {\n" 2373 " this.#priv = 5;\n" 2374 " }\n" 2375 " static staticMethod() {\n" 2376 " switch (this.#priv) {\n" 2377 " case '1':\n" 2378 " #priv = 3;\n" 2379 " break;\n" 2380 " }\n" 2381 " }\n" 2382 " #privateMethod() {\n" 2383 " this.#privateMethod(); // infinite loop\n" 2384 " }\n" 2385 " static #staticPrivateMethod() {}\n"); 2386 } 2387 2388 TEST_F(FormatTestJS, DeclaredFields) { 2389 verifyFormat("class Example {\n" 2390 " declare pub: string;\n" 2391 " declare private priv: string;\n" 2392 "}\n"); 2393 } 2394 2395 } // namespace format 2396 } // end namespace clang 2397