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Copy pathPromisePrototype.js
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66 lines (54 loc) · 2.73 KB
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/*
* Copyright (C) 2014 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
function catch(onRejected)
{
"use strict";
return this.then(@undefined, onRejected);
}
function then(onFulfilled, onRejected)
{
"use strict";
if (!@isPromise(this))
throw new @TypeError("|this| is not a object");
// FIXME: Fix this code when @@species well-known symbol is landed.
// https://bugs.webkit.org/show_bug.cgi?id=146624
var constructor = this.constructor;
var resultCapability = @newPromiseCapability(constructor);
if (typeof onFulfilled !== "function")
onFulfilled = function (argument) { return argument; };
if (typeof onRejected !== "function")
onRejected = function (argument) { throw argument; };
var fulfillReaction = @newPromiseReaction(resultCapability, onFulfilled);
var rejectReaction = @newPromiseReaction(resultCapability, onRejected);
var state = this.@promiseState;
if (state === @promiseStatePending) {
@putByValDirect(this.@promiseFulfillReactions, this.@promiseFulfillReactions.length, fulfillReaction)
@putByValDirect(this.@promiseRejectReactions, this.@promiseRejectReactions.length, rejectReaction)
} else if (state === @promiseStateFulfilled)
@enqueueJob(@promiseReactionJob, [fulfillReaction, this.@promiseResult]);
else if (state === @promiseStateRejected)
@enqueueJob(@promiseReactionJob, [rejectReaction, this.@promiseResult]);
return resultCapability.@promise;
}