Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | (function(global, utils, extrasUtils) { |
| 6 | |
| 7 | "use strict"; |
| 8 | |
| 9 | %CheckIsBootstrapping(); |
| 10 | |
| 11 | // ------------------------------------------------------------------- |
| 12 | // Imports |
| 13 | |
| 14 | var AsyncFunctionNext; |
| 15 | var AsyncFunctionThrow; |
| 16 | var PromiseReject; |
| 17 | var PromiseResolve; |
| 18 | var PromiseThen; |
| 19 | |
| 20 | utils.Import(function(from) { |
| 21 | AsyncFunctionNext = from.AsyncFunctionNext; |
| 22 | AsyncFunctionThrow = from.AsyncFunctionThrow; |
| 23 | PromiseReject = from.PromiseCreateRejected; |
| 24 | PromiseResolve = from.PromiseCreateResolved; |
| 25 | PromiseThen = from.PromiseThen; |
| 26 | }); |
| 27 | |
| 28 | // ------------------------------------------------------------------- |
| 29 | |
| 30 | function AsyncFunctionAwait(generator, value) { |
| 31 | return %_Call( |
| 32 | PromiseThen, PromiseResolve(value), |
| 33 | function(sentValue) { |
| 34 | return %_Call(AsyncFunctionNext, generator, sentValue); |
| 35 | }, |
| 36 | function(sentError) { |
| 37 | return %_Call(AsyncFunctionThrow, generator, sentError); |
| 38 | }); |
| 39 | } |
| 40 | |
| 41 | %InstallToContext([ "async_function_await", AsyncFunctionAwait ]); |
| 42 | |
| 43 | }) |