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authorLorry Tar Creator <lorry-tar-importer@lorry>2017-06-27 06:07:23 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2017-06-27 06:07:23 +0000
commit1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch)
tree46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/JavaScriptCore/builtins/PromiseConstructor.js
parent32761a6cee1d0dee366b885b7b9c777e67885688 (diff)
downloadWebKitGtk-tarball-master.tar.gz
Diffstat (limited to 'Source/JavaScriptCore/builtins/PromiseConstructor.js')
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diff --git a/Source/JavaScriptCore/builtins/PromiseConstructor.js b/Source/JavaScriptCore/builtins/PromiseConstructor.js
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+/*
+ * Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
+ *
+ * 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.
+ */
+
+function all(iterable)
+{
+ "use strict";
+
+ if (!@isObject(this))
+ @throwTypeError("|this| is not a object");
+
+ var promiseCapability = @newPromiseCapability(this);
+
+ var values = [];
+ var index = 0;
+ var remainingElementsCount = 1;
+
+ function newResolveElement(index)
+ {
+ var alreadyCalled = false;
+ return function (argument)
+ {
+ if (alreadyCalled)
+ return @undefined;
+ alreadyCalled = true;
+
+ @putByValDirect(values, index, argument);
+
+ --remainingElementsCount;
+ if (remainingElementsCount === 0)
+ return promiseCapability.@resolve.@call(@undefined, values);
+
+ return @undefined;
+ }
+ }
+
+ try {
+ for (var value of iterable) {
+ @putByValDirect(values, index, @undefined);
+ var nextPromise = this.resolve(value);
+ var resolveElement = newResolveElement(index);
+ ++remainingElementsCount;
+ nextPromise.then(resolveElement, promiseCapability.@reject);
+ ++index;
+ }
+
+ --remainingElementsCount;
+ if (remainingElementsCount === 0)
+ promiseCapability.@resolve.@call(@undefined, values);
+ } catch (error) {
+ promiseCapability.@reject.@call(@undefined, error);
+ }
+
+ return promiseCapability.@promise;
+}
+
+function race(iterable)
+{
+ "use strict";
+
+ if (!@isObject(this))
+ @throwTypeError("|this| is not a object");
+
+ var promiseCapability = @newPromiseCapability(this);
+
+ try {
+ for (var value of iterable) {
+ var nextPromise = this.resolve(value);
+ nextPromise.then(promiseCapability.@resolve, promiseCapability.@reject);
+ }
+ } catch (error) {
+ promiseCapability.@reject.@call(@undefined, error);
+ }
+
+ return promiseCapability.@promise;
+}
+
+function reject(reason)
+{
+ "use strict";
+
+ if (!@isObject(this))
+ @throwTypeError("|this| is not a object");
+
+ var promiseCapability = @newPromiseCapability(this);
+
+ promiseCapability.@reject.@call(@undefined, reason);
+
+ return promiseCapability.@promise;
+}
+
+function resolve(value)
+{
+ "use strict";
+
+ if (!@isObject(this))
+ @throwTypeError("|this| is not a object");
+
+ if (@isPromise(value)) {
+ var valueConstructor = value.constructor;
+ if (valueConstructor === this)
+ return value;
+ }
+
+ var promiseCapability = @newPromiseCapability(this);
+
+ promiseCapability.@resolve.@call(@undefined, value);
+
+ return promiseCapability.@promise;
+}