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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | |
| 2 // Redistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Redistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Redistributions in binary form must reproduce the above | |
| 9 // copyright notice, this list of conditions and the following | |
| 10 // disclaimer in the documentation and/or other materials provided | |
| 11 // with the distribution. | |
| 12 // * Neither the name of Google Inc. nor the names of its | |
| 13 // contributors may be used to endorse or promote products derived | |
| 14 // from this software without specific prior written permission. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 | |
| 28 // Flags: --harmony-generators --expose-gc | |
| 29 | |
| 30 // Test generator iteration. | |
| 31 | |
| 32 var GeneratorFunction = (function*(){yield 1;}).__proto__.constructor; | |
| 33 | |
| 34 function assertIteratorResult(value, done, result) { | |
| 35 assertEquals({ value: value, done: done}, result); | |
| 36 } | |
| 37 | |
| 38 function assertIteratorIsClosed(iter) { | |
| 39 assertIteratorResult(undefined, true, iter.next()); | |
| 40 assertDoesNotThrow(function() { iter.next(); }); | |
| 41 } | |
| 42 | |
| 43 function assertThrownIteratorIsClosed(iter) { | |
| 44 // TODO(yusukesuzuki): Since status of a thrown generator is "executing", | |
| 45 // following tests are failed. | |
| 46 // https://code.google.com/p/v8/issues/detail?id=3096 | |
| 47 // assertIteratorIsClosed(iter); | |
| 48 } | |
| 49 | |
| 50 function TestGeneratorResultPrototype() { | |
| 51 function* g() { yield 1; } | |
| 52 var iter = g(); | |
| 53 var result = iter.next(); | |
| 54 | |
| 55 assertSame(Object.prototype, Object.getPrototypeOf(result)); | |
| 56 property_names = Object.getOwnPropertyNames(result); | |
| 57 property_names.sort(); | |
| 58 assertEquals(["done", "value"], property_names); | |
| 59 assertIteratorResult(1, false, result); | |
| 60 } | |
| 61 TestGeneratorResultPrototype() | |
| 62 | |
| 63 function TestGenerator(g, expected_values_for_next, | |
| 64 send_val, expected_values_for_send) { | |
| 65 function testNext(thunk) { | |
| 66 var iter = thunk(); | |
| 67 for (var i = 0; i < expected_values_for_next.length; i++) { | |
| 68 var v1 = expected_values_for_next[i]; | |
| 69 var v2 = i == expected_values_for_next.length - 1; | |
| 70 // var v3 = iter.next(); | |
| 71 assertIteratorResult(v1, v2, iter.next()); | |
| 72 } | |
| 73 assertIteratorIsClosed(iter); | |
| 74 } | |
| 75 function testSend(thunk) { | |
| 76 var iter = thunk(); | |
| 77 for (var i = 0; i < expected_values_for_send.length; i++) { | |
| 78 assertIteratorResult(expected_values_for_send[i], | |
| 79 i == expected_values_for_send.length - 1, | |
| 80 iter.next(send_val)); | |
| 81 } | |
| 82 assertIteratorIsClosed(iter); | |
| 83 } | |
| 84 function testThrow(thunk) { | |
| 85 for (var i = 0; i < expected_values_for_next.length; i++) { | |
| 86 var iter = thunk(); | |
| 87 for (var j = 0; j < i; j++) { | |
| 88 assertIteratorResult(expected_values_for_next[j], | |
| 89 j == expected_values_for_next.length - 1, | |
| 90 iter.next()); | |
| 91 } | |
| 92 function Sentinel() {} | |
| 93 assertThrows(function () { iter.throw(new Sentinel); }, Sentinel); | |
| 94 assertThrownIteratorIsClosed(iter); | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 testNext(g); | |
| 99 testSend(g); | |
| 100 testThrow(g); | |
| 101 | |
| 102 testNext(function*() { return yield* g(); }); | |
| 103 testSend(function*() { return yield* g(); }); | |
| 104 testThrow(function*() { return yield* g(); }); | |
| 105 | |
| 106 if (g instanceof GeneratorFunction) { | |
| 107 testNext(function() { return new g(); }); | |
| 108 testSend(function() { return new g(); }); | |
| 109 testThrow(function() { return new g(); }); | |
| 110 } | |
| 111 } | |
| 112 | |
| 113 TestGenerator(function* g1() { }, | |
| 114 [undefined], | |
| 115 "foo", | |
| 116 [undefined]); | |
| 117 | |
| 118 TestGenerator(function* g2() { yield 1; }, | |
| 119 [1, undefined], | |
| 120 "foo", | |
| 121 [1, undefined]); | |
| 122 | |
| 123 TestGenerator(function* g3() { yield 1; yield 2; }, | |
| 124 [1, 2, undefined], | |
| 125 "foo", | |
| 126 [1, 2, undefined]); | |
| 127 | |
| 128 TestGenerator(function* g4() { yield 1; yield 2; return 3; }, | |
| 129 [1, 2, 3], | |
| 130 "foo", | |
| 131 [1, 2, 3]); | |
| 132 | |
| 133 TestGenerator(function* g5() { return 1; }, | |
| 134 [1], | |
| 135 "foo", | |
| 136 [1]); | |
| 137 | |
| 138 TestGenerator(function* g6() { var x = yield 1; return x; }, | |
| 139 [1, undefined], | |
| 140 "foo", | |
| 141 [1, "foo"]); | |
| 142 | |
| 143 TestGenerator(function* g7() { var x = yield 1; yield 2; return x; }, | |
| 144 [1, 2, undefined], | |
| 145 "foo", | |
| 146 [1, 2, "foo"]); | |
| 147 | |
| 148 TestGenerator(function* g8() { for (var x = 0; x < 4; x++) { yield x; } }, | |
| 149 [0, 1, 2, 3, undefined], | |
| 150 "foo", | |
| 151 [0, 1, 2, 3, undefined]); | |
| 152 | |
| 153 // Generator with arguments. | |
| 154 TestGenerator( | |
| 155 function g9() { | |
| 156 return (function*(a, b, c, d) { | |
| 157 yield a; yield b; yield c; yield d; | |
| 158 })("fee", "fi", "fo", "fum"); | |
| 159 }, | |
| 160 ["fee", "fi", "fo", "fum", undefined], | |
| 161 "foo", | |
| 162 ["fee", "fi", "fo", "fum", undefined]); | |
| 163 | |
| 164 // Too few arguments. | |
| 165 TestGenerator( | |
| 166 function g10() { | |
| 167 return (function*(a, b, c, d) { | |
| 168 yield a; yield b; yield c; yield d; | |
| 169 })("fee", "fi"); | |
| 170 }, | |
| 171 ["fee", "fi", undefined, undefined, undefined], | |
| 172 "foo", | |
| 173 ["fee", "fi", undefined, undefined, undefined]); | |
| 174 | |
| 175 // Too many arguments. | |
| 176 TestGenerator( | |
| 177 function g11() { | |
| 178 return (function*(a, b, c, d) { | |
| 179 yield a; yield b; yield c; yield d; | |
| 180 })("fee", "fi", "fo", "fum", "I smell the blood of an Englishman"); | |
| 181 }, | |
| 182 ["fee", "fi", "fo", "fum", undefined], | |
| 183 "foo", | |
| 184 ["fee", "fi", "fo", "fum", undefined]); | |
| 185 | |
| 186 // The arguments object. | |
| 187 TestGenerator( | |
| 188 function g12() { | |
| 189 return (function*(a, b, c, d) { | |
| 190 for (var i = 0; i < arguments.length; i++) { | |
| 191 yield arguments[i]; | |
| 192 } | |
| 193 })("fee", "fi", "fo", "fum", "I smell the blood of an Englishman"); | |
| 194 }, | |
| 195 ["fee", "fi", "fo", "fum", "I smell the blood of an Englishman", | |
| 196 undefined], | |
| 197 "foo", | |
| 198 ["fee", "fi", "fo", "fum", "I smell the blood of an Englishman", | |
| 199 undefined]); | |
| 200 | |
| 201 // Access to captured free variables. | |
| 202 TestGenerator( | |
| 203 function g13() { | |
| 204 return (function(a, b, c, d) { | |
| 205 return (function*() { | |
| 206 yield a; yield b; yield c; yield d; | |
| 207 })(); | |
| 208 })("fee", "fi", "fo", "fum"); | |
| 209 }, | |
| 210 ["fee", "fi", "fo", "fum", undefined], | |
| 211 "foo", | |
| 212 ["fee", "fi", "fo", "fum", undefined]); | |
| 213 | |
| 214 // Abusing the arguments object. | |
| 215 TestGenerator( | |
| 216 function g14() { | |
| 217 return (function*(a, b, c, d) { | |
| 218 arguments[0] = "Be he live"; | |
| 219 arguments[1] = "or be he dead"; | |
| 220 arguments[2] = "I'll grind his bones"; | |
| 221 arguments[3] = "to make my bread"; | |
| 222 yield a; yield b; yield c; yield d; | |
| 223 })("fee", "fi", "fo", "fum"); | |
| 224 }, | |
| 225 ["Be he live", "or be he dead", "I'll grind his bones", "to make my bread", | |
| 226 undefined], | |
| 227 "foo", | |
| 228 ["Be he live", "or be he dead", "I'll grind his bones", "to make my bread", | |
| 229 undefined]); | |
| 230 | |
| 231 // Abusing the arguments object: strict mode. | |
| 232 TestGenerator( | |
| 233 function g15() { | |
| 234 return (function*(a, b, c, d) { | |
| 235 "use strict"; | |
| 236 arguments[0] = "Be he live"; | |
| 237 arguments[1] = "or be he dead"; | |
| 238 arguments[2] = "I'll grind his bones"; | |
| 239 arguments[3] = "to make my bread"; | |
| 240 yield a; yield b; yield c; yield d; | |
| 241 })("fee", "fi", "fo", "fum"); | |
| 242 }, | |
| 243 ["fee", "fi", "fo", "fum", undefined], | |
| 244 "foo", | |
| 245 ["fee", "fi", "fo", "fum", undefined]); | |
| 246 | |
| 247 // GC. | |
| 248 TestGenerator(function* g16() { yield "baz"; gc(); yield "qux"; }, | |
| 249 ["baz", "qux", undefined], | |
| 250 "foo", | |
| 251 ["baz", "qux", undefined]); | |
| 252 | |
| 253 // Receivers. | |
| 254 TestGenerator( | |
| 255 function g17() { | |
| 256 function* g() { yield this.x; yield this.y; } | |
| 257 var o = { start: g, x: 1, y: 2 }; | |
| 258 return o.start(); | |
| 259 }, | |
| 260 [1, 2, undefined], | |
| 261 "foo", | |
| 262 [1, 2, undefined]); | |
| 263 | |
| 264 TestGenerator( | |
| 265 function g18() { | |
| 266 function* g() { yield this.x; yield this.y; } | |
| 267 var iter = new g; | |
| 268 iter.x = 1; | |
| 269 iter.y = 2; | |
| 270 return iter; | |
| 271 }, | |
| 272 [1, 2, undefined], | |
| 273 "foo", | |
| 274 [1, 2, undefined]); | |
| 275 | |
| 276 TestGenerator( | |
| 277 function* g19() { | |
| 278 var x = 1; | |
| 279 yield x; | |
| 280 with({x:2}) { yield x; } | |
| 281 yield x; | |
| 282 }, | |
| 283 [1, 2, 1, undefined], | |
| 284 "foo", | |
| 285 [1, 2, 1, undefined]); | |
| 286 | |
| 287 TestGenerator( | |
| 288 function* g20() { yield (1 + (yield 2) + 3); }, | |
| 289 [2, NaN, undefined], | |
| 290 "foo", | |
| 291 [2, "1foo3", undefined]); | |
| 292 | |
| 293 TestGenerator( | |
| 294 function* g21() { return (1 + (yield 2) + 3); }, | |
| 295 [2, NaN], | |
| 296 "foo", | |
| 297 [2, "1foo3"]); | |
| 298 | |
| 299 TestGenerator( | |
| 300 function* g22() { yield (1 + (yield 2) + 3); yield (4 + (yield 5) + 6); }, | |
| 301 [2, NaN, 5, NaN, undefined], | |
| 302 "foo", | |
| 303 [2, "1foo3", 5, "4foo6", undefined]); | |
| 304 | |
| 305 TestGenerator( | |
| 306 function* g23() { | |
| 307 return (yield (1 + (yield 2) + 3)) + (yield (4 + (yield 5) + 6)); | |
| 308 }, | |
| 309 [2, NaN, 5, NaN, NaN], | |
| 310 "foo", | |
| 311 [2, "1foo3", 5, "4foo6", "foofoo"]); | |
| 312 | |
| 313 // Rewind a try context with and without operands on the stack. | |
| 314 TestGenerator( | |
| 315 function* g24() { | |
| 316 try { | |
| 317 return (yield (1 + (yield 2) + 3)) + (yield (4 + (yield 5) + 6)); | |
| 318 } catch (e) { | |
| 319 throw e; | |
| 320 } | |
| 321 }, | |
| 322 [2, NaN, 5, NaN, NaN], | |
| 323 "foo", | |
| 324 [2, "1foo3", 5, "4foo6", "foofoo"]); | |
| 325 | |
| 326 // Yielding in a catch context, with and without operands on the stack. | |
| 327 TestGenerator( | |
| 328 function* g25() { | |
| 329 try { | |
| 330 throw (yield (1 + (yield 2) + 3)) | |
| 331 } catch (e) { | |
| 332 if (typeof e == 'object') throw e; | |
| 333 return e + (yield (4 + (yield 5) + 6)); | |
| 334 } | |
| 335 }, | |
| 336 [2, NaN, 5, NaN, NaN], | |
| 337 "foo", | |
| 338 [2, "1foo3", 5, "4foo6", "foofoo"]); | |
| 339 | |
| 340 // Yield with no arguments yields undefined. | |
| 341 TestGenerator( | |
| 342 function* g26() { return yield yield }, | |
| 343 [undefined, undefined, undefined], | |
| 344 "foo", | |
| 345 [undefined, "foo", "foo"]); | |
| 346 | |
| 347 // A newline causes the parser to stop looking for an argument to yield. | |
| 348 TestGenerator( | |
| 349 function* g27() { | |
| 350 yield | |
| 351 3 | |
| 352 return | |
| 353 }, | |
| 354 [undefined, undefined], | |
| 355 "foo", | |
| 356 [undefined, undefined]); | |
| 357 | |
| 358 // TODO(wingo): We should use TestGenerator for these, except that | |
| 359 // currently yield* will unconditionally propagate a throw() to the | |
| 360 // delegate iterator, which fails for these iterators that don't have | |
| 361 // throw(). See http://code.google.com/p/v8/issues/detail?id=3484. | |
| 362 (function() { | |
| 363 function* g28() { | |
| 364 yield* [1, 2, 3]; | |
| 365 } | |
| 366 var iter = g28(); | |
| 367 assertIteratorResult(1, false, iter.next()); | |
| 368 assertIteratorResult(2, false, iter.next()); | |
| 369 assertIteratorResult(3, false, iter.next()); | |
| 370 assertIteratorResult(undefined, true, iter.next()); | |
| 371 })(); | |
| 372 | |
| 373 (function() { | |
| 374 function* g29() { | |
| 375 yield* "abc"; | |
| 376 } | |
| 377 var iter = g29(); | |
| 378 assertIteratorResult("a", false, iter.next()); | |
| 379 assertIteratorResult("b", false, iter.next()); | |
| 380 assertIteratorResult("c", false, iter.next()); | |
| 381 assertIteratorResult(undefined, true, iter.next()); | |
| 382 })(); | |
| 383 | |
| 384 // Generator function instances. | |
| 385 TestGenerator(GeneratorFunction(), | |
| 386 [undefined], | |
| 387 "foo", | |
| 388 [undefined]); | |
| 389 | |
| 390 TestGenerator(new GeneratorFunction(), | |
| 391 [undefined], | |
| 392 "foo", | |
| 393 [undefined]); | |
| 394 | |
| 395 TestGenerator(GeneratorFunction('yield 1;'), | |
| 396 [1, undefined], | |
| 397 "foo", | |
| 398 [1, undefined]); | |
| 399 | |
| 400 TestGenerator( | |
| 401 function() { return GeneratorFunction('x', 'y', 'yield x + y;')(1, 2) }, | |
| 402 [3, undefined], | |
| 403 "foo", | |
| 404 [3, undefined]); | |
| 405 | |
| 406 // Access to this with formal arguments. | |
| 407 TestGenerator( | |
| 408 function () { | |
| 409 return ({ x: 42, g: function* (a) { yield this.x } }).g(0); | |
| 410 }, | |
| 411 [42, undefined], | |
| 412 "foo", | |
| 413 [42, undefined]); | |
| 414 | |
| 415 // Test that yield* re-yields received results without re-boxing. | |
| 416 function TestDelegatingYield() { | |
| 417 function results(results) { | |
| 418 var i = 0; | |
| 419 function next() { | |
| 420 return results[i++]; | |
| 421 } | |
| 422 var iter = { next: next }; | |
| 423 var ret = {}; | |
| 424 ret[Symbol.iterator] = function() { return iter; }; | |
| 425 return ret; | |
| 426 } | |
| 427 function* yield_results(expected) { | |
| 428 return yield* results(expected); | |
| 429 } | |
| 430 function collect_results(iterable) { | |
| 431 var iter = iterable[Symbol.iterator](); | |
| 432 var ret = []; | |
| 433 var result; | |
| 434 do { | |
| 435 result = iter.next(); | |
| 436 ret.push(result); | |
| 437 } while (!result.done); | |
| 438 return ret; | |
| 439 } | |
| 440 // We have to put a full result for the end, because the return will re-box. | |
| 441 var expected = [{value: 1}, 13, "foo", {value: 34, done: true}]; | |
| 442 | |
| 443 // Sanity check. | |
| 444 assertEquals(expected, collect_results(results(expected))); | |
| 445 assertEquals(expected, collect_results(yield_results(expected))); | |
| 446 } | |
| 447 TestDelegatingYield(); | |
| 448 | |
| 449 function TestTryCatch(instantiate) { | |
| 450 function* g() { yield 1; try { yield 2; } catch (e) { yield e; } yield 3; } | |
| 451 function Sentinel() {} | |
| 452 | |
| 453 function Test1(iter) { | |
| 454 assertIteratorResult(1, false, iter.next()); | |
| 455 assertIteratorResult(2, false, iter.next()); | |
| 456 assertIteratorResult(3, false, iter.next()); | |
| 457 assertIteratorIsClosed(iter); | |
| 458 } | |
| 459 Test1(instantiate(g)); | |
| 460 | |
| 461 function Test2(iter) { | |
| 462 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 463 assertThrownIteratorIsClosed(iter); | |
| 464 } | |
| 465 Test2(instantiate(g)); | |
| 466 | |
| 467 function Test3(iter) { | |
| 468 assertIteratorResult(1, false, iter.next()); | |
| 469 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 470 assertThrownIteratorIsClosed(iter); | |
| 471 } | |
| 472 Test3(instantiate(g)); | |
| 473 | |
| 474 function Test4(iter) { | |
| 475 assertIteratorResult(1, false, iter.next()); | |
| 476 assertIteratorResult(2, false, iter.next()); | |
| 477 var exn = new Sentinel; | |
| 478 assertIteratorResult(exn, false, iter.throw(exn)); | |
| 479 assertIteratorResult(3, false, iter.next()); | |
| 480 assertIteratorIsClosed(iter); | |
| 481 } | |
| 482 Test4(instantiate(g)); | |
| 483 | |
| 484 function Test5(iter) { | |
| 485 assertIteratorResult(1, false, iter.next()); | |
| 486 assertIteratorResult(2, false, iter.next()); | |
| 487 var exn = new Sentinel; | |
| 488 assertIteratorResult(exn, false, iter.throw(exn)); | |
| 489 assertIteratorResult(3, false, iter.next()); | |
| 490 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 491 assertThrownIteratorIsClosed(iter); | |
| 492 } | |
| 493 Test5(instantiate(g)); | |
| 494 | |
| 495 function Test6(iter) { | |
| 496 assertIteratorResult(1, false, iter.next()); | |
| 497 assertIteratorResult(2, false, iter.next()); | |
| 498 var exn = new Sentinel; | |
| 499 assertIteratorResult(exn, false, iter.throw(exn)); | |
| 500 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 501 assertThrownIteratorIsClosed(iter); | |
| 502 } | |
| 503 Test6(instantiate(g)); | |
| 504 | |
| 505 function Test7(iter) { | |
| 506 assertIteratorResult(1, false, iter.next()); | |
| 507 assertIteratorResult(2, false, iter.next()); | |
| 508 assertIteratorResult(3, false, iter.next()); | |
| 509 assertIteratorIsClosed(iter); | |
| 510 } | |
| 511 Test7(instantiate(g)); | |
| 512 } | |
| 513 TestTryCatch(function (g) { return g(); }); | |
| 514 TestTryCatch(function* (g) { return yield* g(); }); | |
| 515 | |
| 516 function TestTryFinally(instantiate) { | |
| 517 function* g() { yield 1; try { yield 2; } finally { yield 3; } yield 4; } | |
| 518 function Sentinel() {} | |
| 519 function Sentinel2() {} | |
| 520 | |
| 521 function Test1(iter) { | |
| 522 assertIteratorResult(1, false, iter.next()); | |
| 523 assertIteratorResult(2, false, iter.next()); | |
| 524 assertIteratorResult(3, false, iter.next()); | |
| 525 assertIteratorResult(4, false, iter.next()); | |
| 526 assertIteratorIsClosed(iter); | |
| 527 } | |
| 528 Test1(instantiate(g)); | |
| 529 | |
| 530 function Test2(iter) { | |
| 531 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 532 assertThrownIteratorIsClosed(iter); | |
| 533 } | |
| 534 Test2(instantiate(g)); | |
| 535 | |
| 536 function Test3(iter) { | |
| 537 assertIteratorResult(1, false, iter.next()); | |
| 538 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 539 assertThrownIteratorIsClosed(iter); | |
| 540 } | |
| 541 Test3(instantiate(g)); | |
| 542 | |
| 543 function Test4(iter) { | |
| 544 assertIteratorResult(1, false, iter.next()); | |
| 545 assertIteratorResult(2, false, iter.next()); | |
| 546 assertIteratorResult(3, false, iter.throw(new Sentinel)); | |
| 547 assertThrows(function() { iter.next(); }, Sentinel); | |
| 548 assertThrownIteratorIsClosed(iter); | |
| 549 } | |
| 550 Test4(instantiate(g)); | |
| 551 | |
| 552 function Test5(iter) { | |
| 553 assertIteratorResult(1, false, iter.next()); | |
| 554 assertIteratorResult(2, false, iter.next()); | |
| 555 assertIteratorResult(3, false, iter.throw(new Sentinel)); | |
| 556 assertThrows(function() { iter.throw(new Sentinel2); }, Sentinel2); | |
| 557 assertThrownIteratorIsClosed(iter); | |
| 558 } | |
| 559 Test5(instantiate(g)); | |
| 560 | |
| 561 function Test6(iter) { | |
| 562 assertIteratorResult(1, false, iter.next()); | |
| 563 assertIteratorResult(2, false, iter.next()); | |
| 564 assertIteratorResult(3, false, iter.next()); | |
| 565 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 566 assertThrownIteratorIsClosed(iter); | |
| 567 } | |
| 568 Test6(instantiate(g)); | |
| 569 | |
| 570 function Test7(iter) { | |
| 571 assertIteratorResult(1, false, iter.next()); | |
| 572 assertIteratorResult(2, false, iter.next()); | |
| 573 assertIteratorResult(3, false, iter.next()); | |
| 574 assertIteratorResult(4, false, iter.next()); | |
| 575 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 576 assertThrownIteratorIsClosed(iter); | |
| 577 } | |
| 578 Test7(instantiate(g)); | |
| 579 | |
| 580 function Test8(iter) { | |
| 581 assertIteratorResult(1, false, iter.next()); | |
| 582 assertIteratorResult(2, false, iter.next()); | |
| 583 assertIteratorResult(3, false, iter.next()); | |
| 584 assertIteratorResult(4, false, iter.next()); | |
| 585 assertIteratorIsClosed(iter); | |
| 586 } | |
| 587 Test8(instantiate(g)); | |
| 588 } | |
| 589 TestTryFinally(function (g) { return g(); }); | |
| 590 TestTryFinally(function* (g) { return yield* g(); }); | |
| 591 | |
| 592 function TestNestedTry(instantiate) { | |
| 593 function* g() { | |
| 594 try { | |
| 595 yield 1; | |
| 596 try { yield 2; } catch (e) { yield e; } | |
| 597 yield 3; | |
| 598 } finally { | |
| 599 yield 4; | |
| 600 } | |
| 601 yield 5; | |
| 602 } | |
| 603 function Sentinel() {} | |
| 604 function Sentinel2() {} | |
| 605 | |
| 606 function Test1(iter) { | |
| 607 assertIteratorResult(1, false, iter.next()); | |
| 608 assertIteratorResult(2, false, iter.next()); | |
| 609 assertIteratorResult(3, false, iter.next()); | |
| 610 assertIteratorResult(4, false, iter.next()); | |
| 611 assertIteratorResult(5, false, iter.next()); | |
| 612 assertIteratorIsClosed(iter); | |
| 613 } | |
| 614 Test1(instantiate(g)); | |
| 615 | |
| 616 function Test2(iter) { | |
| 617 assertThrows(function() { iter.throw(new Sentinel); }, Sentinel); | |
| 618 assertThrownIteratorIsClosed(iter); | |
| 619 } | |
| 620 Test2(instantiate(g)); | |
| 621 | |
| 622 function Test3(iter) { | |
| 623 assertIteratorResult(1, false, iter.next()); | |
| 624 assertIteratorResult(4, false, iter.throw(new Sentinel)); | |
| 625 assertThrows(function() { iter.next(); }, Sentinel); | |
| 626 assertThrownIteratorIsClosed(iter); | |
| 627 } | |
| 628 Test3(instantiate(g)); | |
| 629 | |
| 630 function Test4(iter) { | |
| 631 assertIteratorResult(1, false, iter.next()); | |
| 632 assertIteratorResult(4, false, iter.throw(new Sentinel)); | |
| 633 assertThrows(function() { iter.throw(new Sentinel2); }, Sentinel2); | |
| 634 assertThrownIteratorIsClosed(iter); | |
| 635 } | |
| 636 Test4(instantiate(g)); | |
| 637 | |
| 638 function Test5(iter) { | |
| 639 assertIteratorResult(1, false, iter.next()); | |
| 640 assertIteratorResult(2, false, iter.next()); | |
| 641 var exn = new Sentinel; | |
| 642 assertIteratorResult(exn, false, iter.throw(exn)); | |
| 643 assertIteratorResult(3, false, iter.next()); | |
| 644 assertIteratorResult(4, false, iter.next()); | |
| 645 assertIteratorResult(5, false, iter.next()); | |
| 646 assertIteratorIsClosed(iter); | |
| 647 } | |
| 648 Test5(instantiate(g)); | |
| 649 | |
| 650 function Test6(iter) { | |
| 651 assertIteratorResult(1, false, iter.next()); | |
| 652 assertIteratorResult(2, false, iter.next()); | |
| 653 var exn = new Sentinel; | |
| 654 assertIteratorResult(exn, false, iter.throw(exn)); | |
| 655 assertIteratorResult(4, false, iter.throw(new Sentinel2)); | |
| 656 assertThrows(function() { iter.next(); }, Sentinel2); | |
| 657 assertThrownIteratorIsClosed(iter); | |
| 658 } | |
| 659 Test6(instantiate(g)); | |
| 660 | |
| 661 function Test7(iter) { | |
| 662 assertIteratorResult(1, false, iter.next()); | |
| 663 assertIteratorResult(2, false, iter.next()); | |
| 664 var exn = new Sentinel; | |
| 665 assertIteratorResult(exn, false, iter.throw(exn)); | |
| 666 assertIteratorResult(3, false, iter.next()); | |
| 667 assertIteratorResult(4, false, iter.throw(new Sentinel2)); | |
| 668 assertThrows(function() { iter.next(); }, Sentinel2); | |
| 669 assertThrownIteratorIsClosed(iter); | |
| 670 } | |
| 671 Test7(instantiate(g)); | |
| 672 | |
| 673 // That's probably enough. | |
| 674 } | |
| 675 TestNestedTry(function (g) { return g(); }); | |
| 676 TestNestedTry(function* (g) { return yield* g(); }); | |
| 677 | |
| 678 function TestRecursion() { | |
| 679 function TestNextRecursion() { | |
| 680 function* g() { yield iter.next(); } | |
| 681 var iter = g(); | |
| 682 return iter.next(); | |
| 683 } | |
| 684 function TestSendRecursion() { | |
| 685 function* g() { yield iter.next(42); } | |
| 686 var iter = g(); | |
| 687 return iter.next(); | |
| 688 } | |
| 689 function TestThrowRecursion() { | |
| 690 function* g() { yield iter.throw(1); } | |
| 691 var iter = g(); | |
| 692 return iter.next(); | |
| 693 } | |
| 694 assertThrows(TestNextRecursion, Error); | |
| 695 assertThrows(TestSendRecursion, Error); | |
| 696 assertThrows(TestThrowRecursion, Error); | |
| 697 } | |
| 698 TestRecursion(); | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 479543003:
Stage ES6 generators (Closed)
Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge