1684b2d9ac
Review URL: http://codereview.chromium.org/620003 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3886 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
1002 lines
27 KiB
JavaScript
1002 lines
27 KiB
JavaScript
// Copyright 2006-2008 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 declarations have been made
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//
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// in runtime.js:
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// const $Object = global.Object;
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// const $Boolean = global.Boolean;
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// const $Number = global.Number;
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// const $Function = global.Function;
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// const $Array = global.Array;
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// const $NaN = 0/0;
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//
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// in math.js:
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// const $floor = MathFloor
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const $isNaN = GlobalIsNaN;
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const $isFinite = GlobalIsFinite;
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// ----------------------------------------------------------------------------
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// Helper function used to install functions on objects.
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function InstallFunctions(object, attributes, functions) {
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if (functions.length >= 8) {
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%OptimizeObjectForAddingMultipleProperties(object, functions.length >> 1);
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}
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for (var i = 0; i < functions.length; i += 2) {
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var key = functions[i];
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var f = functions[i + 1];
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%FunctionSetName(f, key);
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%SetProperty(object, key, f, attributes);
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}
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%ToFastProperties(object);
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}
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// Emulates JSC by installing functions on a hidden prototype that
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// lies above the current object/prototype. This lets you override
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// functions on String.prototype etc. and then restore the old function
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// with delete. See http://code.google.com/p/chromium/issues/detail?id=1717
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function InstallFunctionsOnHiddenPrototype(object, attributes, functions) {
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var hidden_prototype = new $Object();
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%SetHiddenPrototype(object, hidden_prototype);
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InstallFunctions(hidden_prototype, attributes, functions);
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}
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// ----------------------------------------------------------------------------
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// ECMA 262 - 15.1.4
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function GlobalIsNaN(number) {
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var n = ToNumber(number);
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return NUMBER_IS_NAN(n);
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}
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// ECMA 262 - 15.1.5
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function GlobalIsFinite(number) {
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return %NumberIsFinite(ToNumber(number));
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}
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// ECMA-262 - 15.1.2.2
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function GlobalParseInt(string, radix) {
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if (IS_UNDEFINED(radix)) {
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// Some people use parseInt instead of Math.floor. This
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// optimization makes parseInt on a Smi 12 times faster (60ns
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// vs 800ns). The following optimization makes parseInt on a
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// non-Smi number 9 times faster (230ns vs 2070ns). Together
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// they make parseInt on a string 1.4% slower (274ns vs 270ns).
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if (%_IsSmi(string)) return string;
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if (IS_NUMBER(string) &&
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((0.01 < string && string < 1e9) ||
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(-1e9 < string && string < -0.01))) {
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// Truncate number.
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return string | 0;
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}
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radix = 0;
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} else {
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radix = TO_INT32(radix);
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if (!(radix == 0 || (2 <= radix && radix <= 36)))
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return $NaN;
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}
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return %StringParseInt(ToString(string), radix);
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}
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// ECMA-262 - 15.1.2.3
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function GlobalParseFloat(string) {
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return %StringParseFloat(ToString(string));
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}
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function GlobalEval(x) {
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if (!IS_STRING(x)) return x;
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var global_receiver = %GlobalReceiver(global);
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var this_is_global_receiver = (this === global_receiver);
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var global_is_detached = (global === global_receiver);
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if (!this_is_global_receiver || global_is_detached) {
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throw new $EvalError('The "this" object passed to eval must ' +
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'be the global object from which eval originated');
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}
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var f = %CompileString(x, false);
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if (!IS_FUNCTION(f)) return f;
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return f.call(this);
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}
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// execScript for IE compatibility.
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function GlobalExecScript(expr, lang) {
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// NOTE: We don't care about the character casing.
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if (!lang || /javascript/i.test(lang)) {
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var f = %CompileString(ToString(expr), false);
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f.call(%GlobalReceiver(global));
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}
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return null;
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}
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// ----------------------------------------------------------------------------
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function SetupGlobal() {
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// ECMA 262 - 15.1.1.1.
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%SetProperty(global, "NaN", $NaN, DONT_ENUM | DONT_DELETE);
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// ECMA-262 - 15.1.1.2.
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%SetProperty(global, "Infinity", 1/0, DONT_ENUM | DONT_DELETE);
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// ECMA-262 - 15.1.1.3.
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%SetProperty(global, "undefined", void 0, DONT_ENUM | DONT_DELETE);
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// Setup non-enumerable function on the global object.
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InstallFunctions(global, DONT_ENUM, $Array(
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"isNaN", GlobalIsNaN,
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"isFinite", GlobalIsFinite,
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"parseInt", GlobalParseInt,
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"parseFloat", GlobalParseFloat,
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"eval", GlobalEval,
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"execScript", GlobalExecScript
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));
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}
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SetupGlobal();
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// ----------------------------------------------------------------------------
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// Boolean (first part of definition)
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%SetCode($Boolean, function(x) {
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if (%_IsConstructCall()) {
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%_SetValueOf(this, ToBoolean(x));
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} else {
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return ToBoolean(x);
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}
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});
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%FunctionSetPrototype($Boolean, new $Boolean(false));
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%SetProperty($Boolean.prototype, "constructor", $Boolean, DONT_ENUM);
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// ----------------------------------------------------------------------------
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// Object
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$Object.prototype.constructor = $Object;
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// ECMA-262 - 15.2.4.2
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function ObjectToString() {
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return "[object " + %_ClassOf(ToObject(this)) + "]";
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}
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// ECMA-262 - 15.2.4.3
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function ObjectToLocaleString() {
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return this.toString();
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}
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// ECMA-262 - 15.2.4.4
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function ObjectValueOf() {
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return ToObject(this);
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}
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// ECMA-262 - 15.2.4.5
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function ObjectHasOwnProperty(V) {
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return %HasLocalProperty(ToObject(this), ToString(V));
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}
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// ECMA-262 - 15.2.4.6
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function ObjectIsPrototypeOf(V) {
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if (!IS_OBJECT(V) && !IS_FUNCTION(V)) return false;
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return %IsInPrototypeChain(this, V);
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}
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// ECMA-262 - 15.2.4.6
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function ObjectPropertyIsEnumerable(V) {
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if (this == null) return false;
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if (!IS_OBJECT(this) && !IS_FUNCTION(this)) return false;
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return %IsPropertyEnumerable(this, ToString(V));
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}
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// Extensions for providing property getters and setters.
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function ObjectDefineGetter(name, fun) {
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if (this == null) {
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throw new $TypeError('Object.prototype.__defineGetter__: this is Null');
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}
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if (!IS_FUNCTION(fun)) {
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throw new $TypeError('Object.prototype.__defineGetter__: Expecting function');
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}
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return %DefineAccessor(ToObject(this), ToString(name), GETTER, fun);
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}
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function ObjectLookupGetter(name) {
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if (this == null) {
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throw new $TypeError('Object.prototype.__lookupGetter__: this is Null');
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}
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return %LookupAccessor(ToObject(this), ToString(name), GETTER);
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}
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function ObjectDefineSetter(name, fun) {
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if (this == null) {
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throw new $TypeError('Object.prototype.__defineSetter__: this is Null');
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}
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if (!IS_FUNCTION(fun)) {
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throw new $TypeError(
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'Object.prototype.__defineSetter__: Expecting function');
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}
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return %DefineAccessor(ToObject(this), ToString(name), SETTER, fun);
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}
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function ObjectLookupSetter(name) {
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if (this == null) {
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throw new $TypeError('Object.prototype.__lookupSetter__: this is Null');
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}
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return %LookupAccessor(ToObject(this), ToString(name), SETTER);
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}
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function ObjectKeys(obj) {
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if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
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throw MakeTypeError("obj_ctor_property_non_object", ["keys"]);
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return %LocalKeys(obj);
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}
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// ES5 8.10.1.
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function IsAccessorDescriptor(desc) {
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if (IS_UNDEFINED(desc)) return false;
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return desc.hasGetter_ || desc.hasSetter_;
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}
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// ES5 8.10.2.
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function IsDataDescriptor(desc) {
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if (IS_UNDEFINED(desc)) return false;
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return desc.hasValue_ || desc.hasWritable_;
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}
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// ES5 8.10.3.
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function IsGenericDescriptor(desc) {
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return !(IsAccessorDescriptor(desc) || IsDataDescriptor(desc));
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}
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function IsInconsistentDescriptor(desc) {
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return IsAccessorDescriptor(desc) && IsDataDescriptor(desc);
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}
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// ES5 8.10.4
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function FromPropertyDescriptor(desc) {
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if (IS_UNDEFINED(desc)) return desc;
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var obj = new $Object();
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if (IsDataDescriptor(desc)) {
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obj.value = desc.getValue();
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obj.writable = desc.isWritable();
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}
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if (IsAccessorDescriptor(desc)) {
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obj.get = desc.getGet();
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obj.set = desc.getSet();
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}
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obj.enumerable = desc.isEnumerable();
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obj.configurable = desc.isConfigurable();
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return obj;
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}
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// ES5 8.10.5.
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function ToPropertyDescriptor(obj) {
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if (!IS_OBJECT(obj)) {
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throw MakeTypeError("property_desc_object", [obj]);
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}
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var desc = new PropertyDescriptor();
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if ("enumerable" in obj) {
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desc.setEnumerable(ToBoolean(obj.enumerable));
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}
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if ("configurable" in obj) {
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desc.setConfigurable(ToBoolean(obj.configurable));
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}
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if ("value" in obj) {
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desc.setValue(obj.value);
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}
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if ("writable" in obj) {
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desc.setWritable(ToBoolean(obj.writable));
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}
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if ("get" in obj) {
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var get = obj.get;
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if (!IS_UNDEFINED(get) && !IS_FUNCTION(get)) {
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throw MakeTypeError("getter_must_be_callable", [get]);
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}
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desc.setGet(get);
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}
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if ("set" in obj) {
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var set = obj.set;
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if (!IS_UNDEFINED(set) && !IS_FUNCTION(set)) {
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throw MakeTypeError("setter_must_be_callable", [set]);
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}
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desc.setSet(set);
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}
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if (IsInconsistentDescriptor(desc)) {
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throw MakeTypeError("value_and_accessor", [obj]);
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}
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return desc;
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}
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function PropertyDescriptor() {
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// Initialize here so they are all in-object and have the same map.
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// Default values from ES5 8.6.1.
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this.value_ = void 0;
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this.hasValue_ = false;
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this.writable_ = false;
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this.hasWritable_ = false;
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this.enumerable_ = false;
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this.hasEnumerable_ = false;
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this.configurable_ = false;
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this.hasConfigurable_ = false;
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this.get_ = void 0;
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this.hasGetter_ = false;
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this.set_ = void 0;
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this.hasSetter_ = false;
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}
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PropertyDescriptor.prototype.setValue = function(value) {
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this.value_ = value;
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this.hasValue_ = true;
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}
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PropertyDescriptor.prototype.getValue = function() {
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return this.value_;
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}
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PropertyDescriptor.prototype.hasValue = function() {
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return this.hasValue_;
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}
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PropertyDescriptor.prototype.setEnumerable = function(enumerable) {
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this.enumerable_ = enumerable;
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this.hasEnumerable_ = true;
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}
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PropertyDescriptor.prototype.isEnumerable = function () {
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return this.enumerable_;
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}
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PropertyDescriptor.prototype.hasEnumerable = function() {
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return this.hasEnumerable_;
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}
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PropertyDescriptor.prototype.setWritable = function(writable) {
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this.writable_ = writable;
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this.hasWritable_ = true;
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}
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PropertyDescriptor.prototype.isWritable = function() {
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return this.writable_;
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}
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PropertyDescriptor.prototype.setConfigurable = function(configurable) {
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this.configurable_ = configurable;
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this.hasConfigurable_ = true;
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}
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PropertyDescriptor.prototype.hasConfigurable = function() {
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return this.hasConfigurable_;
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}
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PropertyDescriptor.prototype.isConfigurable = function() {
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return this.configurable_;
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}
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PropertyDescriptor.prototype.setGet = function(get) {
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this.get_ = get;
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this.hasGetter_ = true;
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}
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PropertyDescriptor.prototype.getGet = function() {
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return this.get_;
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}
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PropertyDescriptor.prototype.hasGetter = function() {
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return this.hasGetter_;
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}
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PropertyDescriptor.prototype.setSet = function(set) {
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this.set_ = set;
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this.hasSetter_ = true;
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}
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PropertyDescriptor.prototype.getSet = function() {
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return this.set_;
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}
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PropertyDescriptor.prototype.hasSetter = function() {
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return this.hasSetter_;
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}
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// ES5 section 8.12.1.
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function GetOwnProperty(obj, p) {
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var desc = new PropertyDescriptor();
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// An array with:
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// obj is a data property [false, value, Writeable, Enumerable, Configurable]
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// obj is an accessor [true, Get, Set, Enumerable, Configurable]
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var props = %GetOwnProperty(ToObject(obj), ToString(p));
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if (IS_UNDEFINED(props)) return void 0;
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// This is an accessor
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if (props[0]) {
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desc.setGet(props[1]);
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desc.setSet(props[2]);
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} else {
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desc.setValue(props[1]);
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desc.setWritable(props[2]);
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}
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desc.setEnumerable(props[3]);
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desc.setConfigurable(props[4]);
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return desc;
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}
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// ES5 section 8.12.2.
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function GetProperty(obj, p) {
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var prop = GetOwnProperty(obj);
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if (!IS_UNDEFINED(prop)) return prop;
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var proto = obj.__proto__;
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if (IS_NULL(proto)) return void 0;
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return GetProperty(proto, p);
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}
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// ES5 section 8.12.6
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function HasProperty(obj, p) {
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var desc = GetProperty(obj, p);
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return IS_UNDEFINED(desc) ? false : true;
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}
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// ES5 8.12.9.
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function DefineOwnProperty(obj, p, desc, should_throw) {
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var current = GetOwnProperty(obj, p);
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var extensible = %IsExtensible(ToObject(obj));
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// Error handling according to spec.
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// Step 3
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if (IS_UNDEFINED(current) && !extensible)
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throw MakeTypeError("define_disallowed", ["defineProperty"]);
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if (!IS_UNDEFINED(current) && !current.isConfigurable()) {
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// Step 7
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if (desc.isConfigurable() || desc.isEnumerable() != current.isEnumerable())
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throw MakeTypeError("redefine_disallowed", ["defineProperty"]);
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// Step 9
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if (IsDataDescriptor(current) != IsDataDescriptor(desc))
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throw MakeTypeError("redefine_disallowed", ["defineProperty"]);
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// Step 10
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if (IsDataDescriptor(current) && IsDataDescriptor(desc)) {
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if (!current.isWritable() && desc.isWritable())
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throw MakeTypeError("redefine_disallowed", ["defineProperty"]);
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if (!current.isWritable() && desc.hasValue() &&
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!SameValue(desc.getValue(), current.getValue())) {
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throw MakeTypeError("redefine_disallowed", ["defineProperty"]);
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}
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}
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// Step 11
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if (IsAccessorDescriptor(desc) && IsAccessorDescriptor(current)) {
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if (desc.hasSetter() && !SameValue(desc.getSet(), current.getSet())){
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throw MakeTypeError("redefine_disallowed", ["defineProperty"]);
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}
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if (desc.hasGetter() && !SameValue(desc.getGet(),current.getGet()))
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throw MakeTypeError("redefine_disallowed", ["defineProperty"]);
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}
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}
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// Send flags - enumerable and configurable are common - writable is
|
|
// only send to the data descriptor.
|
|
// Take special care if enumerable and configurable is not defined on
|
|
// desc (we need to preserve the existing values from current).
|
|
var flag = NONE;
|
|
if (desc.hasEnumerable()) {
|
|
flag |= desc.isEnumerable() ? 0 : DONT_ENUM;
|
|
} else if (!IS_UNDEFINED(current)) {
|
|
flag |= current.isEnumerable() ? 0 : DONT_ENUM;
|
|
} else {
|
|
flag |= DONT_ENUM;
|
|
}
|
|
|
|
if (desc.hasConfigurable()) {
|
|
flag |= desc.isConfigurable() ? 0 : DONT_DELETE;
|
|
} else if (!IS_UNDEFINED(current)) {
|
|
flag |= current.isConfigurable() ? 0 : DONT_DELETE;
|
|
} else
|
|
flag |= DONT_DELETE;
|
|
|
|
if (IsDataDescriptor(desc) || IsGenericDescriptor(desc)) {
|
|
flag |= desc.isWritable() ? 0 : READ_ONLY;
|
|
%DefineOrRedefineDataProperty(obj, p, desc.getValue(), flag);
|
|
} else {
|
|
if (desc.hasGetter() && IS_FUNCTION(desc.getGet())) {
|
|
%DefineOrRedefineAccessorProperty(obj, p, GETTER, desc.getGet(), flag);
|
|
}
|
|
if (desc.hasSetter() && IS_FUNCTION(desc.getSet())) {
|
|
%DefineOrRedefineAccessorProperty(obj, p, SETTER, desc.getSet(), flag);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
// ES5 section 15.2.3.2.
|
|
function ObjectGetPrototypeOf(obj) {
|
|
if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
|
|
throw MakeTypeError("obj_ctor_property_non_object", ["getPrototypeOf"]);
|
|
return obj.__proto__;
|
|
}
|
|
|
|
|
|
// ES5 section 15.2.3.3
|
|
function ObjectGetOwnPropertyDescriptor(obj, p) {
|
|
if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
|
|
throw MakeTypeError("obj_ctor_property_non_object", ["getOwnPropertyDescriptor"]);
|
|
var desc = GetOwnProperty(obj, p);
|
|
return FromPropertyDescriptor(desc);
|
|
}
|
|
|
|
|
|
// ES5 section 15.2.3.4.
|
|
function ObjectGetOwnPropertyNames(obj) {
|
|
if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
|
|
throw MakeTypeError("obj_ctor_property_non_object", ["getOwnPropertyNames"]);
|
|
|
|
// Find all the indexed properties.
|
|
|
|
// Get the local element names.
|
|
var propertyNames = %GetLocalElementNames(obj);
|
|
|
|
// Get names for indexed interceptor properties.
|
|
if (%GetInterceptorInfo(obj) & 1) {
|
|
var indexedInterceptorNames =
|
|
%GetIndexedInterceptorElementNames(obj);
|
|
if (indexedInterceptorNames)
|
|
propertyNames = propertyNames.concat(indexedInterceptorNames);
|
|
}
|
|
|
|
// Find all the named properties.
|
|
|
|
// Get the local property names.
|
|
propertyNames = propertyNames.concat(%GetLocalPropertyNames(obj));
|
|
|
|
// Get names for named interceptor properties if any.
|
|
|
|
if (%GetInterceptorInfo(obj) & 2) {
|
|
var namedInterceptorNames =
|
|
%GetNamedInterceptorPropertyNames(obj);
|
|
if (namedInterceptorNames) {
|
|
propertyNames = propertyNames.concat(namedInterceptorNames);
|
|
}
|
|
}
|
|
|
|
// Property names are expected to be strings.
|
|
for (var i = 0; i < propertyNames.length; ++i)
|
|
propertyNames[i] = ToString(propertyNames[i]);
|
|
|
|
return propertyNames;
|
|
}
|
|
|
|
|
|
// ES5 section 15.2.3.5.
|
|
function ObjectCreate(proto, properties) {
|
|
if (!IS_OBJECT(proto) && !IS_NULL(proto)) {
|
|
throw MakeTypeError("proto_object_or_null", [proto]);
|
|
}
|
|
var obj = new $Object();
|
|
obj.__proto__ = proto;
|
|
if (!IS_UNDEFINED(properties)) ObjectDefineProperties(obj, properties);
|
|
return obj;
|
|
}
|
|
|
|
|
|
// ES5 section 15.2.3.6.
|
|
function ObjectDefineProperty(obj, p, attributes) {
|
|
if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
|
|
throw MakeTypeError("obj_ctor_property_non_object", ["defineProperty"]);
|
|
var name = ToString(p);
|
|
var desc = ToPropertyDescriptor(attributes);
|
|
DefineOwnProperty(obj, name, desc, true);
|
|
return obj;
|
|
}
|
|
|
|
|
|
// ES5 section 15.2.3.7.
|
|
function ObjectDefineProperties(obj, properties) {
|
|
if ((!IS_OBJECT(obj) || IS_NULL_OR_UNDEFINED(obj)) && !IS_FUNCTION(obj))
|
|
throw MakeTypeError("obj_ctor_property_non_object", ["defineProperties"]);
|
|
var props = ToObject(properties);
|
|
var key_values = [];
|
|
for (var key in props) {
|
|
if (%HasLocalProperty(props, key)) {
|
|
key_values.push(key);
|
|
var value = props[key];
|
|
var desc = ToPropertyDescriptor(value);
|
|
key_values.push(desc);
|
|
}
|
|
}
|
|
for (var i = 0; i < key_values.length; i += 2) {
|
|
var key = key_values[i];
|
|
var desc = key_values[i + 1];
|
|
DefineOwnProperty(obj, key, desc, true);
|
|
}
|
|
return obj;
|
|
}
|
|
|
|
|
|
%SetCode($Object, function(x) {
|
|
if (%_IsConstructCall()) {
|
|
if (x == null) return this;
|
|
return ToObject(x);
|
|
} else {
|
|
if (x == null) return { };
|
|
return ToObject(x);
|
|
}
|
|
});
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
function SetupObject() {
|
|
// Setup non-enumerable functions on the Object.prototype object.
|
|
InstallFunctions($Object.prototype, DONT_ENUM, $Array(
|
|
"toString", ObjectToString,
|
|
"toLocaleString", ObjectToLocaleString,
|
|
"valueOf", ObjectValueOf,
|
|
"hasOwnProperty", ObjectHasOwnProperty,
|
|
"isPrototypeOf", ObjectIsPrototypeOf,
|
|
"propertyIsEnumerable", ObjectPropertyIsEnumerable,
|
|
"__defineGetter__", ObjectDefineGetter,
|
|
"__lookupGetter__", ObjectLookupGetter,
|
|
"__defineSetter__", ObjectDefineSetter,
|
|
"__lookupSetter__", ObjectLookupSetter
|
|
));
|
|
InstallFunctions($Object, DONT_ENUM, $Array(
|
|
"keys", ObjectKeys,
|
|
"create", ObjectCreate,
|
|
"defineProperty", ObjectDefineProperty,
|
|
"defineProperties", ObjectDefineProperties,
|
|
"getPrototypeOf", ObjectGetPrototypeOf,
|
|
"getOwnPropertyDescriptor", ObjectGetOwnPropertyDescriptor,
|
|
"getOwnPropertyNames", ObjectGetOwnPropertyNames
|
|
));
|
|
}
|
|
|
|
SetupObject();
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Boolean
|
|
|
|
function BooleanToString() {
|
|
// NOTE: Both Boolean objects and values can enter here as
|
|
// 'this'. This is not as dictated by ECMA-262.
|
|
if (!IS_BOOLEAN(this) && !IS_BOOLEAN_WRAPPER(this))
|
|
throw new $TypeError('Boolean.prototype.toString is not generic');
|
|
return ToString(%_ValueOf(this));
|
|
}
|
|
|
|
|
|
function BooleanValueOf() {
|
|
// NOTE: Both Boolean objects and values can enter here as
|
|
// 'this'. This is not as dictated by ECMA-262.
|
|
if (!IS_BOOLEAN(this) && !IS_BOOLEAN_WRAPPER(this))
|
|
throw new $TypeError('Boolean.prototype.valueOf is not generic');
|
|
return %_ValueOf(this);
|
|
}
|
|
|
|
|
|
function BooleanToJSON(key) {
|
|
return CheckJSONPrimitive(this.valueOf());
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
function SetupBoolean() {
|
|
InstallFunctions($Boolean.prototype, DONT_ENUM, $Array(
|
|
"toString", BooleanToString,
|
|
"valueOf", BooleanValueOf,
|
|
"toJSON", BooleanToJSON
|
|
));
|
|
}
|
|
|
|
SetupBoolean();
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Number
|
|
|
|
// Set the Number function and constructor.
|
|
%SetCode($Number, function(x) {
|
|
var value = %_ArgumentsLength() == 0 ? 0 : ToNumber(x);
|
|
if (%_IsConstructCall()) {
|
|
%_SetValueOf(this, value);
|
|
} else {
|
|
return value;
|
|
}
|
|
});
|
|
|
|
%FunctionSetPrototype($Number, new $Number(0));
|
|
|
|
// ECMA-262 section 15.7.4.2.
|
|
function NumberToString(radix) {
|
|
// NOTE: Both Number objects and values can enter here as
|
|
// 'this'. This is not as dictated by ECMA-262.
|
|
var number = this;
|
|
if (!IS_NUMBER(this)) {
|
|
if (!IS_NUMBER_WRAPPER(this))
|
|
throw new $TypeError('Number.prototype.toString is not generic');
|
|
// Get the value of this number in case it's an object.
|
|
number = %_ValueOf(this);
|
|
}
|
|
// Fast case: Convert number in radix 10.
|
|
if (IS_UNDEFINED(radix) || radix === 10) {
|
|
return ToString(number);
|
|
}
|
|
|
|
// Convert the radix to an integer and check the range.
|
|
radix = TO_INTEGER(radix);
|
|
if (radix < 2 || radix > 36) {
|
|
throw new $RangeError('toString() radix argument must be between 2 and 36');
|
|
}
|
|
// Convert the number to a string in the given radix.
|
|
return %NumberToRadixString(number, radix);
|
|
}
|
|
|
|
|
|
// ECMA-262 section 15.7.4.3
|
|
function NumberToLocaleString() {
|
|
return this.toString();
|
|
}
|
|
|
|
|
|
// ECMA-262 section 15.7.4.4
|
|
function NumberValueOf() {
|
|
// NOTE: Both Number objects and values can enter here as
|
|
// 'this'. This is not as dictated by ECMA-262.
|
|
if (!IS_NUMBER(this) && !IS_NUMBER_WRAPPER(this))
|
|
throw new $TypeError('Number.prototype.valueOf is not generic');
|
|
return %_ValueOf(this);
|
|
}
|
|
|
|
|
|
// ECMA-262 section 15.7.4.5
|
|
function NumberToFixed(fractionDigits) {
|
|
var f = TO_INTEGER(fractionDigits);
|
|
if (f < 0 || f > 20) {
|
|
throw new $RangeError("toFixed() digits argument must be between 0 and 20");
|
|
}
|
|
var x = ToNumber(this);
|
|
return %NumberToFixed(x, f);
|
|
}
|
|
|
|
|
|
// ECMA-262 section 15.7.4.6
|
|
function NumberToExponential(fractionDigits) {
|
|
var f = -1;
|
|
if (!IS_UNDEFINED(fractionDigits)) {
|
|
f = TO_INTEGER(fractionDigits);
|
|
if (f < 0 || f > 20) {
|
|
throw new $RangeError("toExponential() argument must be between 0 and 20");
|
|
}
|
|
}
|
|
var x = ToNumber(this);
|
|
return %NumberToExponential(x, f);
|
|
}
|
|
|
|
|
|
// ECMA-262 section 15.7.4.7
|
|
function NumberToPrecision(precision) {
|
|
if (IS_UNDEFINED(precision)) return ToString(%_ValueOf(this));
|
|
var p = TO_INTEGER(precision);
|
|
if (p < 1 || p > 21) {
|
|
throw new $RangeError("toPrecision() argument must be between 1 and 21");
|
|
}
|
|
var x = ToNumber(this);
|
|
return %NumberToPrecision(x, p);
|
|
}
|
|
|
|
|
|
function CheckJSONPrimitive(val) {
|
|
if (!IsPrimitive(val))
|
|
throw MakeTypeError('result_not_primitive', ['toJSON', val]);
|
|
return val;
|
|
}
|
|
|
|
|
|
function NumberToJSON(key) {
|
|
return CheckJSONPrimitive(this.valueOf());
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
function SetupNumber() {
|
|
%OptimizeObjectForAddingMultipleProperties($Number.prototype, 8);
|
|
// Setup the constructor property on the Number prototype object.
|
|
%SetProperty($Number.prototype, "constructor", $Number, DONT_ENUM);
|
|
|
|
%OptimizeObjectForAddingMultipleProperties($Number, 5);
|
|
// ECMA-262 section 15.7.3.1.
|
|
%SetProperty($Number,
|
|
"MAX_VALUE",
|
|
1.7976931348623157e+308,
|
|
DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
|
|
// ECMA-262 section 15.7.3.2.
|
|
%SetProperty($Number, "MIN_VALUE", 5e-324, DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
|
|
// ECMA-262 section 15.7.3.3.
|
|
%SetProperty($Number, "NaN", $NaN, DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
|
|
// ECMA-262 section 15.7.3.4.
|
|
%SetProperty($Number,
|
|
"NEGATIVE_INFINITY",
|
|
-1/0,
|
|
DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
|
|
// ECMA-262 section 15.7.3.5.
|
|
%SetProperty($Number,
|
|
"POSITIVE_INFINITY",
|
|
1/0,
|
|
DONT_ENUM | DONT_DELETE | READ_ONLY);
|
|
%ToFastProperties($Number);
|
|
|
|
// Setup non-enumerable functions on the Number prototype object.
|
|
InstallFunctions($Number.prototype, DONT_ENUM, $Array(
|
|
"toString", NumberToString,
|
|
"toLocaleString", NumberToLocaleString,
|
|
"valueOf", NumberValueOf,
|
|
"toFixed", NumberToFixed,
|
|
"toExponential", NumberToExponential,
|
|
"toPrecision", NumberToPrecision,
|
|
"toJSON", NumberToJSON
|
|
));
|
|
}
|
|
|
|
SetupNumber();
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Function
|
|
|
|
$Function.prototype.constructor = $Function;
|
|
|
|
function FunctionSourceString(func) {
|
|
if (!IS_FUNCTION(func)) {
|
|
throw new $TypeError('Function.prototype.toString is not generic');
|
|
}
|
|
|
|
var source = %FunctionGetSourceCode(func);
|
|
if (!IS_STRING(source) || %FunctionIsBuiltin(func)) {
|
|
var name = %FunctionGetName(func);
|
|
if (name) {
|
|
// Mimic what KJS does.
|
|
return 'function ' + name + '() { [native code] }';
|
|
} else {
|
|
return 'function () { [native code] }';
|
|
}
|
|
}
|
|
|
|
var name = %FunctionGetName(func);
|
|
return 'function ' + name + source;
|
|
}
|
|
|
|
|
|
function FunctionToString() {
|
|
return FunctionSourceString(this);
|
|
}
|
|
|
|
|
|
function NewFunction(arg1) { // length == 1
|
|
var n = %_ArgumentsLength();
|
|
var p = '';
|
|
if (n > 1) {
|
|
p = new $Array(n - 1);
|
|
// Explicitly convert all parameters to strings.
|
|
// Array.prototype.join replaces null with empty strings which is
|
|
// not appropriate.
|
|
for (var i = 0; i < n - 1; i++) p[i] = ToString(%_Arguments(i));
|
|
p = p.join(',');
|
|
// If the formal parameters string include ) - an illegal
|
|
// character - it may make the combined function expression
|
|
// compile. We avoid this problem by checking for this early on.
|
|
if (p.indexOf(')') != -1) throw MakeSyntaxError('unable_to_parse',[]);
|
|
}
|
|
var body = (n > 0) ? ToString(%_Arguments(n - 1)) : '';
|
|
var source = '(function(' + p + ') {\n' + body + '\n})';
|
|
|
|
// The call to SetNewFunctionAttributes will ensure the prototype
|
|
// property of the resulting function is enumerable (ECMA262, 15.3.5.2).
|
|
var f = %CompileString(source, false)();
|
|
%FunctionSetName(f, "anonymous");
|
|
return %SetNewFunctionAttributes(f);
|
|
}
|
|
|
|
%SetCode($Function, NewFunction);
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
function SetupFunction() {
|
|
InstallFunctions($Function.prototype, DONT_ENUM, $Array(
|
|
"toString", FunctionToString
|
|
));
|
|
}
|
|
|
|
SetupFunction();
|