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 14var AsyncFunctionNext; 15var AsyncFunctionThrow; 16var PromiseReject; 17var PromiseResolve; 18var PromiseThen; 19 20utils.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 30function 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}) 44