73 lines
2.6 KiB
JavaScript
73 lines
2.6 KiB
JavaScript
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// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// This file relies on the fact that the following declaration has been made
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// in runtime.js:
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// const $Object = global.Object;
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const $WeakMap = global.WeakMap;
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// -------------------------------------------------------------------
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// Set the WeakMap function and constructor.
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%SetCode($WeakMap, function(x) {
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if (%_IsConstructCall()) {
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%WeakMapInitialize(this);
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} else {
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return new $WeakMap();
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}
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});
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function WeakMapGet(key) {
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if (!IS_SPEC_OBJECT(key)) {
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throw %MakeTypeError('invalid_weakmap_key', [this, key]);
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}
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return %WeakMapGet(this, key);
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}
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function WeakMapSet(key, value) {
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if (!IS_SPEC_OBJECT(key)) {
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throw %MakeTypeError('invalid_weakmap_key', [this, key]);
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}
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return %WeakMapSet(this, key, value);
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}
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// -------------------------------------------------------------------
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function SetupWeakMap() {
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// Setup the non-enumerable functions on the WeakMap prototype object.
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InstallFunctionsOnHiddenPrototype($WeakMap.prototype, DONT_ENUM, $Array(
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"get", WeakMapGet,
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"set", WeakMapSet
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));
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}
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SetupWeakMap();
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