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PromiseOperations.js
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81 lines (69 loc) · 2.86 KB
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/*
* Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
* Copyright (C) 2016-2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// @internal
@linkTimeConstant
function newPromiseCapabilitySlow(constructor)
{
"use strict";
var promiseCapability = {
resolve: @undefined,
reject: @undefined,
promise: @undefined,
};
var promise = new constructor((resolve, reject) => {
if (promiseCapability.resolve !== @undefined)
@throwTypeError("resolve function is already set");
if (promiseCapability.reject !== @undefined)
@throwTypeError("reject function is already set");
promiseCapability.resolve = resolve;
promiseCapability.reject = reject;
});
if (!@isCallable(promiseCapability.resolve))
@throwTypeError("executor did not take a resolve function");
if (!@isCallable(promiseCapability.reject))
@throwTypeError("executor did not take a reject function");
promiseCapability.promise = promise;
return promiseCapability;
}
@linkTimeConstant
function newPromiseCapability(constructor)
{
"use strict";
if (constructor === @Promise) {
var promise = @newPromise();
var capturedPromise = promise;
return {
resolve: (0, (value) => {
return @resolvePromiseWithFirstResolvingFunctionCallCheck(capturedPromise, value);
}),
reject: (0, (value) => {
return @rejectPromiseWithFirstResolvingFunctionCallCheck(capturedPromise, value);
}),
promise
};
}
return @newPromiseCapabilitySlow(constructor);
}