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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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195 // TODO(rossberg): perhaps log uncaught exceptions below. | 195 // TODO(rossberg): perhaps log uncaught exceptions below. |
196 try { deferred.reject(e) } catch(e) {} | 196 try { deferred.reject(e) } catch(e) {} |
197 } | 197 } |
198 } | 198 } |
199 | 199 |
200 | 200 |
201 // Multi-unwrapped chaining with thenable coercion. | 201 // Multi-unwrapped chaining with thenable coercion. |
202 | 202 |
203 function PromiseThen(onResolve, onReject) { | 203 function PromiseThen(onResolve, onReject) { |
204 onResolve = | 204 onResolve = |
205 IS_NULL_OR_UNDEFINED(onResolve) ? PromiseIdResolveHandler : onResolve; | 205 IS_SPEC_FUNCTION(onResolve) ? onResolve : PromiseIdResolveHandler; |
206 onReject = | 206 onReject = |
207 IS_NULL_OR_UNDEFINED(onReject) ? PromiseIdRejectHandler : onReject; | 207 IS_SPEC_FUNCTION(onReject) ? onReject : PromiseIdRejectHandler; |
208 var that = this; | 208 var that = this; |
209 var constructor = this.constructor; | 209 var constructor = this.constructor; |
210 return %_CallFunction( | 210 return %_CallFunction( |
211 this, | 211 this, |
212 function(x) { | 212 function(x) { |
213 x = PromiseCoerce(constructor, x); | 213 x = PromiseCoerce(constructor, x); |
214 return x === that ? onReject(MakeTypeError('promise_cyclic', [x])) : | 214 return x === that ? onReject(MakeTypeError('promise_cyclic', [x])) : |
215 IsPromise(x) ? x.then(onResolve, onReject) : onResolve(x); | 215 IsPromise(x) ? x.then(onResolve, onReject) : onResolve(x); |
216 }, | 216 }, |
217 onReject, | 217 onReject, |
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318 "resolve", PromiseCast | 318 "resolve", PromiseCast |
319 ]); | 319 ]); |
320 InstallFunctions($Promise.prototype, DONT_ENUM, [ | 320 InstallFunctions($Promise.prototype, DONT_ENUM, [ |
321 "chain", PromiseChain, | 321 "chain", PromiseChain, |
322 "then", PromiseThen, | 322 "then", PromiseThen, |
323 "catch", PromiseCatch | 323 "catch", PromiseCatch |
324 ]); | 324 ]); |
325 } | 325 } |
326 | 326 |
327 SetUpPromise(); | 327 SetUpPromise(); |
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