6a260c3363
R=rossberg@chromium.org Review URL: https://codereview.chromium.org/14125004 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14228 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
88 lines
3.1 KiB
JavaScript
88 lines
3.1 KiB
JavaScript
// Copyright 2013 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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"use strict";
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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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// var $Array = global.Array;
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var $Symbol = global.Symbol;
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// -------------------------------------------------------------------
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function SymbolConstructor(x) {
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var value =
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IS_SYMBOL(x) ? x : %CreateSymbol(IS_UNDEFINED(x) ? x : ToString(x));
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if (%_IsConstructCall()) {
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%_SetValueOf(this, value);
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} else {
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return value;
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}
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}
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function SymbolGetName() {
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var symbol = IS_SYMBOL_WRAPPER(this) ? %_ValueOf(this) : this;
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if (!IS_SYMBOL(symbol)) {
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throw MakeTypeError(
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'incompatible_method_receiver', ["Symbol.prototype.name", this]);
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}
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return %SymbolName(symbol);
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}
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function SymbolToString() {
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throw MakeTypeError('symbol_to_string');
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}
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function SymbolValueOf() {
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// NOTE: Both Symbol objects and values can enter here as
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// 'this'. This is not as dictated by ECMA-262.
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if (!IS_SYMBOL(this) && !IS_SYMBOL_WRAPPER(this)) {
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throw MakeTypeError(
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'incompatible_method_receiver', ["Symbol.prototype.valueOf", this]);
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}
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return %_ValueOf(this);
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}
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//-------------------------------------------------------------------
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function SetUpSymbol() {
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%CheckIsBootstrapping();
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%SetCode($Symbol, SymbolConstructor);
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%FunctionSetPrototype($Symbol, new $Symbol());
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%SetProperty($Symbol.prototype, "constructor", $Symbol, DONT_ENUM);
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InstallGetter($Symbol.prototype, "name", SymbolGetName);
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InstallFunctions($Symbol.prototype, DONT_ENUM, $Array(
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"toString", SymbolToString,
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"valueOf", SymbolValueOf
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));
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}
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SetUpSymbol();
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