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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 "use strict"; | 5 "use strict"; |
6 | 6 |
7 // This file relies on the fact that the following declaration has been made | 7 // This file relies on the fact that the following declaration has been made |
8 // in runtime.js: | 8 // in runtime.js: |
9 // var $Object = global.Object | 9 // var $Object = global.Object |
10 // var $WeakMap = global.WeakMap | 10 // var $WeakMap = global.WeakMap |
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99 } | 99 } |
100 return x; | 100 return x; |
101 } | 101 } |
102 | 102 |
103 function PromiseHandle(value, handler, deferred) { | 103 function PromiseHandle(value, handler, deferred) { |
104 try { | 104 try { |
105 %DebugPushPromise(deferred.promise); | 105 %DebugPushPromise(deferred.promise); |
106 var result = handler(value); | 106 var result = handler(value); |
107 if (result === deferred.promise) | 107 if (result === deferred.promise) |
108 throw MakeTypeError('promise_cyclic', [result]); | 108 throw MakeTypeError('promise_cyclic', [result]); |
109 else if (IsPromise(result)) | 109 else if (IsUnforgedPromise(result)) |
110 %_CallFunction(result, deferred.resolve, deferred.reject, PromiseChain); | 110 %_CallFunction(result, deferred.resolve, deferred.reject, PromiseChain); |
111 else | 111 else |
112 deferred.resolve(result); | 112 deferred.resolve(result); |
113 } catch (exception) { | 113 } catch (exception) { |
114 try { deferred.reject(exception); } catch (e) { } | 114 try { deferred.reject(exception); } catch (e) { } |
115 } finally { | 115 } finally { |
116 %DebugPopPromise(); | 116 %DebugPopPromise(); |
117 } | 117 } |
118 } | 118 } |
119 | 119 |
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144 | 144 |
145 // ------------------------------------------------------------------- | 145 // ------------------------------------------------------------------- |
146 // Define exported functions. | 146 // Define exported functions. |
147 | 147 |
148 // For bootstrapper. | 148 // For bootstrapper. |
149 | 149 |
150 IsPromise = function IsPromise(x) { | 150 IsPromise = function IsPromise(x) { |
151 return IS_SPEC_OBJECT(x) && HAS_DEFINED_PRIVATE(x, promiseStatus); | 151 return IS_SPEC_OBJECT(x) && HAS_DEFINED_PRIVATE(x, promiseStatus); |
152 } | 152 } |
153 | 153 |
154 IsUnforgedPromise = function IsUnforgedPromise(x) { | |
arv (Not doing code reviews)
2015/04/17 14:32:06
Does this need to be exported?
yhirano
2015/04/30 05:05:16
Deleted.
| |
155 if (!IsPromise(x)) { | |
156 return false; | |
157 } | |
158 try { | |
159 return x.then === PromiseThen; | |
arv (Not doing code reviews)
2015/04/17 14:32:06
This needs a test to ensure that the getter is inv
arv (Not doing code reviews)
2015/04/17 14:32:06
Which section of the ES6 spec defines this? I cann
yhirano
2015/04/30 05:05:16
Deleted.
yhirano
2015/04/30 05:05:16
Deleted.
| |
160 } catch (e) { | |
161 return false; | |
162 } | |
163 } | |
164 | |
154 PromiseCreate = function PromiseCreate() { | 165 PromiseCreate = function PromiseCreate() { |
155 return new $Promise(PromiseNopResolver) | 166 return new $Promise(PromiseNopResolver) |
156 } | 167 } |
157 | 168 |
158 PromiseResolve = function PromiseResolve(promise, x) { | 169 PromiseResolve = function PromiseResolve(promise, x) { |
159 PromiseDone(promise, +1, x, promiseOnResolve) | 170 PromiseDone(promise, +1, x, promiseOnResolve) |
160 } | 171 } |
161 | 172 |
162 PromiseReject = function PromiseReject(promise, r) { | 173 PromiseReject = function PromiseReject(promise, r) { |
163 // Check promise status to confirm that this reject has an effect. | 174 // Check promise status to confirm that this reject has an effect. |
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375 "race", PromiseOne, | 386 "race", PromiseOne, |
376 "resolve", PromiseCast | 387 "resolve", PromiseCast |
377 ]); | 388 ]); |
378 InstallFunctions($Promise.prototype, DONT_ENUM, [ | 389 InstallFunctions($Promise.prototype, DONT_ENUM, [ |
379 "chain", PromiseChain, | 390 "chain", PromiseChain, |
380 "then", PromiseThen, | 391 "then", PromiseThen, |
381 "catch", PromiseCatch | 392 "catch", PromiseCatch |
382 ]); | 393 ]); |
383 | 394 |
384 })(); | 395 })(); |
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