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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 (function(global, utils, extrasUtils) { | 5 (function(global, utils, extrasUtils) { |
6 | 6 |
7 "use strict"; | 7 "use strict"; |
8 | 8 |
9 %CheckIsBootstrapping(); | 9 %CheckIsBootstrapping(); |
10 | 10 |
11 // ------------------------------------------------------------------- | 11 // ------------------------------------------------------------------- |
12 // Imports | 12 // Imports |
13 | 13 |
14 var InternalArray = utils.InternalArray; | 14 var InternalArray = utils.InternalArray; |
15 var MakeTypeError; | 15 var MakeTypeError; |
16 var promiseCombinedDeferredSymbol = | 16 var promiseCombinedDeferredSymbol = |
17 utils.ImportNow("promise_combined_deferred_symbol"); | 17 utils.ImportNow("promise_combined_deferred_symbol"); |
18 var promiseHasHandlerSymbol = | 18 var promiseHasHandlerSymbol = |
19 utils.ImportNow("promise_has_handler_symbol"); | 19 utils.ImportNow("promise_has_handler_symbol"); |
20 var promiseOnRejectSymbol = utils.ImportNow("promise_on_reject_symbol"); | 20 var promiseOnRejectSymbol = utils.ImportNow("promise_on_reject_symbol"); |
21 var promiseOnResolveSymbol = | 21 var promiseOnResolveSymbol = |
22 utils.ImportNow("promise_on_resolve_symbol"); | 22 utils.ImportNow("promise_on_resolve_symbol"); |
23 var promiseRawSymbol = utils.ImportNow("promise_raw_symbol"); | 23 var promiseRawSymbol = utils.ImportNow("promise_raw_symbol"); |
24 var promiseStatusSymbol = utils.ImportNow("promise_status_symbol"); | 24 var promiseStatusSymbol = utils.ImportNow("promise_status_symbol"); |
25 var promiseValueSymbol = utils.ImportNow("promise_value_symbol"); | 25 var promiseValueSymbol = utils.ImportNow("promise_value_symbol"); |
| 26 var SpeciesConstructor; |
26 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol"); | 27 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol"); |
27 | 28 |
28 utils.Import(function(from) { | 29 utils.Import(function(from) { |
29 MakeTypeError = from.MakeTypeError; | 30 MakeTypeError = from.MakeTypeError; |
| 31 SpeciesConstructor = from.SpeciesConstructor; |
30 }); | 32 }); |
31 | 33 |
32 // ------------------------------------------------------------------- | 34 // ------------------------------------------------------------------- |
33 | 35 |
34 // Status values: 0 = pending, +1 = resolved, -1 = rejected | 36 // Status values: 0 = pending, +1 = resolved, -1 = rejected |
35 var lastMicrotaskId = 0; | 37 var lastMicrotaskId = 0; |
36 | 38 |
37 function CreateResolvingFunctions(promise) { | 39 function CreateResolvingFunctions(promise) { |
38 var alreadyResolved = false; | 40 var alreadyResolved = false; |
39 | 41 |
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274 } | 276 } |
275 | 277 |
276 // Multi-unwrapped chaining with thenable coercion. | 278 // Multi-unwrapped chaining with thenable coercion. |
277 | 279 |
278 function PromiseThen(onResolve, onReject) { | 280 function PromiseThen(onResolve, onReject) { |
279 var status = GET_PRIVATE(this, promiseStatusSymbol); | 281 var status = GET_PRIVATE(this, promiseStatusSymbol); |
280 if (IS_UNDEFINED(status)) { | 282 if (IS_UNDEFINED(status)) { |
281 throw MakeTypeError(kNotAPromise, this); | 283 throw MakeTypeError(kNotAPromise, this); |
282 } | 284 } |
283 | 285 |
284 var constructor = this.constructor; | 286 var constructor = SpeciesConstructor(this, GlobalPromise); |
285 onResolve = IS_CALLABLE(onResolve) ? onResolve : PromiseIdResolveHandler; | 287 onResolve = IS_CALLABLE(onResolve) ? onResolve : PromiseIdResolveHandler; |
286 onReject = IS_CALLABLE(onReject) ? onReject : PromiseIdRejectHandler; | 288 onReject = IS_CALLABLE(onReject) ? onReject : PromiseIdRejectHandler; |
287 var deferred = NewPromiseCapability(constructor); | 289 var deferred = NewPromiseCapability(constructor); |
288 switch (status) { | 290 switch (status) { |
289 case 0: // Pending | 291 case 0: // Pending |
290 GET_PRIVATE(this, promiseOnResolveSymbol).push(onResolve, deferred); | 292 GET_PRIVATE(this, promiseOnResolveSymbol).push(onResolve, deferred); |
291 GET_PRIVATE(this, promiseOnRejectSymbol).push(onReject, deferred); | 293 GET_PRIVATE(this, promiseOnRejectSymbol).push(onReject, deferred); |
292 break; | 294 break; |
293 case +1: // Resolved | 295 case +1: // Resolved |
294 PromiseEnqueue(GET_PRIVATE(this, promiseValueSymbol), | 296 PromiseEnqueue(GET_PRIVATE(this, promiseValueSymbol), |
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475 [PromiseChain, PromiseDeferred, PromiseResolved].forEach( | 477 [PromiseChain, PromiseDeferred, PromiseResolved].forEach( |
476 fn => %FunctionRemovePrototype(fn)); | 478 fn => %FunctionRemovePrototype(fn)); |
477 | 479 |
478 utils.Export(function(to) { | 480 utils.Export(function(to) { |
479 to.PromiseChain = PromiseChain; | 481 to.PromiseChain = PromiseChain; |
480 to.PromiseDeferred = PromiseDeferred; | 482 to.PromiseDeferred = PromiseDeferred; |
481 to.PromiseResolved = PromiseResolved; | 483 to.PromiseResolved = PromiseResolved; |
482 }); | 484 }); |
483 | 485 |
484 }) | 486 }) |
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