| // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * 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. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| // OWNER 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. |
| |
| // This file relies on the fact that the following declarations have been made |
| // |
| // in runtime.js: |
| // const $Object = global.Object; |
| // const $Boolean = global.Boolean; |
| // const $Number = global.Number; |
| // const $Function = global.Function; |
| // const $Array = global.Array; |
| // const $NaN = 0/0; |
| // |
| // in math.js: |
| // const $floor = MathFloor |
| |
| const $isNaN = GlobalIsNaN; |
| const $isFinite = GlobalIsFinite; |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| |
| // Helper function used to install functions on objects. |
| function InstallFunctions(object, attributes, functions) { |
| if (functions.length >= 8) { |
| %OptimizeObjectForAddingMultipleProperties(object, functions.length >> 1); |
| } |
| for (var i = 0; i < functions.length; i += 2) { |
| var key = functions[i]; |
| var f = functions[i + 1]; |
| %FunctionSetName(f, key); |
| %FunctionRemovePrototype(f); |
| %SetProperty(object, key, f, attributes); |
| } |
| %ToFastProperties(object); |
| } |
| |
| // Emulates JSC by installing functions on a hidden prototype that |
| // lies above the current object/prototype. This lets you override |
| // functions on String.prototype etc. and then restore the old function |
| // with delete. See http://code.google.com/p/chromium/issues/detail?id=1717 |
| function InstallFunctionsOnHiddenPrototype(object, attributes, functions) { |
| var hidden_prototype = new $Object(); |
| %SetHiddenPrototype(object, hidden_prototype); |
| InstallFunctions(hidden_prototype, attributes, functions); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| |
| // ECMA 262 - 15.1.4 |
| function GlobalIsNaN(number) { |
| var n = ToNumber(number); |
| return NUMBER_IS_NAN(n); |
| } |
| |
| |
| // ECMA 262 - 15.1.5 |
| function GlobalIsFinite(number) { |
| if (!IS_NUMBER(number)) number = ToNumber(number); |
| |
| // NaN - NaN == NaN, Infinity - Infinity == NaN, -Infinity - -Infinity == NaN. |
| return %_IsSmi(number) || number - number == 0; |
| } |
| |
| |
| // ECMA-262 - 15.1.2.2 |
| function GlobalParseInt(string, radix) { |
| if (IS_UNDEFINED(radix)) { |
| // Some people use parseInt instead of Math.floor. This |
| // optimization makes parseInt on a Smi 12 times faster (60ns |
| // vs 800ns). The following optimization makes parseInt on a |
| // non-Smi number 9 times faster (230ns vs 2070ns). Together |
| // they make parseInt on a string 1.4% slower (274ns vs 270ns). |
| if (%_IsSmi(string)) return string; |
| if (IS_NUMBER(string) && |
| ((0.01 < string && string < 1e9) || |
| (-1e9 < string && string < -0.01))) { |
| // Truncate number. |
| return string | 0; |
| } |
| radix = 0; |
| } else { |
| radix = TO_INT32(radix); |
| if (!(radix == 0 || (2 <= radix && radix <= 36))) |
| return $NaN; |
| } |
| return %StringParseInt(ToString(string), radix); |
| } |
| |
| |
| // ECMA-262 - 15.1.2.3 |
| function GlobalParseFloat(string) { |
| return %StringParseFloat(ToString(string)); |
| } |
| |
| |
| function GlobalEval(x) { |
| if (!IS_STRING(x)) return x; |
| |
| var global_receiver = %GlobalReceiver(global); |
| var this_is_global_receiver = (this === global_receiver); |
| var global_is_detached = (global === global_receiver); |
| |
| if (!this_is_global_receiver || global_is_detached) { |
| throw new $EvalError('The "this" object passed to eval must ' + |
| 'be the global object from which eval originated'); |
| } |
| |
| var f = %CompileString(x, false); |
| if (!IS_FUNCTION(f)) return f; |
| |
| return f.call(this); |
| } |
| |
| |
| // execScript for IE compatibility. |
| function GlobalExecScript(expr, lang) { |
| // NOTE: We don't care about the character casing. |
| if (!lang || /javascript/i.test(lang)) { |
| var f = %CompileString(ToString(expr), false); |
| f.call(%GlobalReceiver(global)); |
| } |
| return null; |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| |
| function SetupGlobal() { |
| // ECMA 262 - 15.1.1.1. |
| %SetProperty(global, "NaN", $NaN, DONT_ENUM | DONT_DELETE); |
| |
| // ECMA-262 - 15.1.1.2. |
| %SetProperty(global, "Infinity", 1/0, DONT_ENUM | DONT_DELETE); |
| |
| // ECMA-262 - 15.1.1.3. |
| %SetProperty(global, "undefined", void 0, DONT_ENUM | DONT_DELETE); |
| |
| // Setup non-enumerable function on the global object. |
| InstallFunctions(global, DONT_ENUM, $Array( |
| "isNaN", GlobalIsNaN, |
| "isFinite", GlobalIsFinite, |
| "parseInt", GlobalParseInt, |
| "parseFloat", GlobalParseFloat, |
| "eval", GlobalEval, |
| "execScript", GlobalExecScript |
| )); |
| } |
| |
| SetupGlobal(); |
| |
| |
| // ---------------------------------------------------------------------------- |
| // Boolean (first part of definition) |
| |
| |
| %SetCode($Boolean, function(x) { |
| if (%_IsConstructCall()) { |
| %_SetValueOf(this, ToBoolean(x)); |
| } else { |
| return ToBoolean(x); |
| } |
| }); |
| |
| %FunctionSetPrototype($Boolean, new $Boolean(false)); |
| |
| %SetProperty($Boolean.prototype, "constructor", $Boolean, DONT_ENUM); |
| |
| // ---------------------------------------------------------------------------- |
| // Object |
| |
| $Object.prototype.constructor = $Object; |
| |
| // ECMA-262 - 15.2.4.2 |
| function ObjectToString() { |
| return "[object " + %_ClassOf(ToObject(this)) + "]"; |
| } |
| |
| |
| // ECMA-262 - 15.2.4.3 |
| function ObjectToLocaleString() { |
| return this.toString(); |
| } |
| |
| |
| // ECMA-262 - 15.2.4.4 |
| function ObjectValueOf() { |
| return ToObject(this); |
| } |
| |
| |
| // ECMA-262 - 15.2.4.5 |
| function ObjectHasOwnProperty(V) { |
| return %HasLocalProperty(ToObject(this), ToString(V)); |
| } |
| |
| |
| // ECMA-262 - 15.2.4.6 |
| function ObjectIsPrototypeOf(V) { |
| if (!IS_SPEC_OBJECT(V)) return false; |
| return %IsInPrototypeChain(this, V); |
| } |
| |
| |
| // ECMA-262 - 15.2.4.6 |
| function ObjectPropertyIsEnumerable(V) { |
| return %IsPropertyEnumerable(ToObject(this), ToString(V)); |
| } |
| |
| |
| // Extensions for providing property getters and setters. |
| function ObjectDefineGetter(name, fun) { |
| if (this == null && !IS_UNDETECTABLE(this)) { |
| throw new $TypeError('Object.prototype.__defineGetter__: this is Null'); |
| } |
| if (!IS_FUNCTION(fun)) { |
| throw new $TypeError('Object.prototype.__defineGetter__: Expecting function'); |
| } |
| return %DefineAccessor(ToObject(this), ToString(name), GETTER, fun); |
| } |
| |
| |
| function ObjectLookupGetter(name) { |
| if (this == null && !IS_UNDETECTABLE(this)) { |
| throw new $TypeError('Object.prototype.__lookupGetter__: this is Null'); |
| } |
| return %LookupAccessor(ToObject(this), ToString(name), GETTER); |
| } |
| |
| |
| function ObjectDefineSetter(name, fun) { |
| if (this == null && !IS_UNDETECTABLE(this)) { |
| throw new $TypeError('Object.prototype.__defineSetter__: this is Null'); |
| } |
| if (!IS_FUNCTION(fun)) { |
| throw new $TypeError( |
| 'Object.prototype.__defineSetter__: Expecting function'); |
| } |
| return %DefineAccessor(ToObject(this), ToString(name), SETTER, fun); |
| } |
| |
| |
| function ObjectLookupSetter(name) { |
| if (this == null && !IS_UNDETECTABLE(this)) { |
| throw new $TypeError('Object.prototype.__lookupSetter__: this is Null'); |
| } |
| return %LookupAccessor(ToObject(this), ToString(name), SETTER); |
| } |
| |
| |
| function ObjectKeys(obj) { |
| if (!IS_SPEC_OBJECT(obj)) |
| throw MakeTypeError("obj_ctor_property_non_object", ["keys"]); |
| return %LocalKeys(obj); |
| } |
| |
| |
| // ES5 8.10.1. |
| function IsAccessorDescriptor(desc) { |
| if (IS_UNDEFINED(desc)) return false; |
| return desc.hasGetter_ || desc.hasSetter_; |
| } |
| |
| |
| // ES5 8.10.2. |
| function IsDataDescriptor(desc) { |
| if (IS_UNDEFINED(desc)) return false; |
| return desc.hasValue_ || desc.hasWritable_; |
| } |
| |
| |
| // ES5 8.10.3. |
| function IsGenericDescriptor(desc) { |
| return !(IsAccessorDescriptor(desc) || IsDataDescriptor(desc)); |
| } |
| |
| |
| function IsInconsistentDescriptor(desc) { |
| return IsAccessorDescriptor(desc) && IsDataDescriptor(desc); |
| } |
| |
| // ES5 8.10.4 |
| function FromPropertyDescriptor(desc) { |
| if (IS_UNDEFINED(desc)) return desc; |
| var obj = new $Object(); |
| if (IsDataDescriptor(desc)) { |
| obj.value = desc.getValue(); |
| obj.writable = desc.isWritable(); |
| } |
| if (IsAccessorDescriptor(desc)) { |
| obj.get = desc.getGet(); |
| obj.set = desc.getSet(); |
| } |
| obj.enumerable = desc.isEnumerable(); |
| obj.configurable = desc.isConfigurable(); |
| return obj; |
| } |
| |
| // ES5 8.10.5. |
| function ToPropertyDescriptor(obj) { |
| if (!IS_SPEC_OBJECT(obj)) { |
| throw MakeTypeError("property_desc_object", [obj]); |
| } |
| var desc = new PropertyDescriptor(); |
| |
| if ("enumerable" in obj) { |
| desc.setEnumerable(ToBoolean(obj.enumerable)); |
| } |
| |
| if ("configurable" in obj) { |
| desc.setConfigurable(ToBoolean(obj.configurable)); |
| } |
| |
| if ("value" in obj) { |
| desc.setValue(obj.value); |
| } |
| |
| if ("writable" in obj) { |
| desc.setWritable(ToBoolean(obj.writable)); |
| } |
| |
| if ("get" in obj) { |
| var get = obj.get; |
| if (!IS_UNDEFINED(get) && !IS_FUNCTION(get)) { |
| throw MakeTypeError("getter_must_be_callable", [get]); |
| } |
| desc.setGet(get); |
| } |
| |
| if ("set" in obj) { |
| var set = obj.set; |
| if (!IS_UNDEFINED(set) && !IS_FUNCTION(set)) { |
| throw MakeTypeError("setter_must_be_callable", [set]); |
| } |
| desc.setSet(set); |
| } |
| |
| if (IsInconsistentDescriptor(desc)) { |
| throw MakeTypeError("value_and_accessor", [obj]); |
| } |
| return desc; |
| } |
| |
| |
| function PropertyDescriptor() { |
| // Initialize here so they are all in-object and have the same map. |
| // Default values from ES5 8.6.1. |
| this.value_ = void 0; |
| this.hasValue_ = false; |
| this.writable_ = false; |
| this.hasWritable_ = false; |
| this.enumerable_ = false; |
| this.hasEnumerable_ = false; |
| this.configurable_ = false; |
| this.hasConfigurable_ = false; |
| this.get_ = void 0; |
| this.hasGetter_ = false; |
| this.set_ = void 0; |
| this.hasSetter_ = false; |
| } |
| |
| |
| PropertyDescriptor.prototype.setValue = function(value) { |
| this.value_ = value; |
| this.hasValue_ = true; |
| } |
| |
| |
| PropertyDescriptor.prototype.getValue = function() { |
| return this.value_; |
| } |
| |
| |
| PropertyDescriptor.prototype.hasValue = function() { |
| return this.hasValue_; |
| } |
| |
| |
| PropertyDescriptor.prototype.setEnumerable = function(enumerable) { |
| this.enumerable_ = enumerable; |
| this.hasEnumerable_ = true; |
| } |
| |
| |
| PropertyDescriptor.prototype.isEnumerable = function () { |
| return this.enumerable_; |
| } |
| |
| |
| PropertyDescriptor.prototype.hasEnumerable = function() { |
| return this.hasEnumerable_; |
| } |
| |
| |
| PropertyDescriptor.prototype.setWritable = function(writable) { |
| this.writable_ = writable; |
| this.hasWritable_ = true; |
| } |
| |
| |
| PropertyDescriptor.prototype.isWritable = function() { |
| return this.writable_; |
| } |
| |
| |
| PropertyDescriptor.prototype.hasWritable = function() { |
| return this.hasWritable_; |
| } |
| |
| |
| PropertyDescriptor.prototype.setConfigurable = function(configurable) { |
| this.configurable_ = configurable; |
| this.hasConfigurable_ = true; |
| } |
| |
| |
| PropertyDescriptor.prototype.hasConfigurable = function() { |
| return this.hasConfigurable_; |
| } |
| |
| |
| PropertyDescriptor.prototype.isConfigurable = function() { |
| return this.configurable_; |
| } |
| |
| |
| PropertyDescriptor.prototype.setGet = function(get) { |
| this.get_ = get; |
| this.hasGetter_ = true; |
| } |
| |
| |
| PropertyDescriptor.prototype.getGet = function() { |
| return this.get_; |
| } |
| |
| |
| PropertyDescriptor.prototype.hasGetter = function() { |
| return this.hasGetter_; |
| } |
| |
| |
| PropertyDescriptor.prototype.setSet = function(set) { |
| this.set_ = set; |
| this.hasSetter_ = true; |
| } |
| |
| |
| PropertyDescriptor.prototype.getSet = function() { |
| return this.set_; |
| } |
| |
| |
| PropertyDescriptor.prototype.hasSetter = function() { |
| return this.hasSetter_; |
| } |
| |
| |
| |
| // ES5 section 8.12.1. |
| function GetOwnProperty(obj, p) { |
| var desc = new PropertyDescriptor(); |
| |
| // GetOwnProperty returns an array indexed by the constants |
| // defined in macros.py. |
| // If p is not a property on obj undefined is returned. |
| var props = %GetOwnProperty(ToObject(obj), ToString(p)); |
| |
| if (IS_UNDEFINED(props)) return void 0; |
| |
| // This is an accessor |
| if (props[IS_ACCESSOR_INDEX]) { |
| desc.setGet(props[GETTER_INDEX]); |
| desc.setSet(props[SETTER_INDEX]); |
| } else { |
| desc.setValue(props[VALUE_INDEX]); |
| desc.setWritable(props[WRITABLE_INDEX]); |
| } |
| desc.setEnumerable(props[ENUMERABLE_INDEX]); |
| desc.setConfigurable(props[CONFIGURABLE_INDEX]); |
| |
| return desc; |
| } |
| |
| |
| // ES5 section 8.12.2. |
| function GetProperty(obj, p) { |
| var prop = GetOwnProperty(obj); |
| if (!IS_UNDEFINED(prop)) return prop; |
| var proto = obj.__proto__; |
| if (IS_NULL(proto)) return void 0; |
| return GetProperty(proto, p); |
| } |
| |
| |
| // ES5 section 8.12.6 |
| function HasProperty(obj, p) { |
| var desc = GetProperty(obj, p); |
| return IS_UNDEFINED(desc) ? false : true; |
| } |
| |
| |
| // ES5 8.12.9. |
| function DefineOwnProperty(obj, p, desc, should_throw) { |
| var current = GetOwnProperty(obj, p); |
| var extensible = %IsExtensible(ToObject(obj)); |
| |
| // Error handling according to spec. |
| // Step 3 |
| if (IS_UNDEFINED(current) && !extensible) |
| throw MakeTypeError("define_disallowed", ["defineProperty"]); |
| |
| if (!IS_UNDEFINED(current) && !current.isConfigurable()) { |
| // Step 5 and 6 |
| if ((!desc.hasEnumerable() || |
| SameValue(desc.isEnumerable() && current.isEnumerable())) && |
| (!desc.hasConfigurable() || |
| SameValue(desc.isConfigurable(), current.isConfigurable())) && |
| (!desc.hasWritable() || |
| SameValue(desc.isWritable(), current.isWritable())) && |
| (!desc.hasValue() || |
| SameValue(desc.getValue(), current.getValue())) && |
| (!desc.hasGetter() || |
| SameValue(desc.getGet(), current.getGet())) && |
| (!desc.hasSetter() || |
| SameValue(desc.getSet(), current.getSet()))) { |
| return true; |
| } |
| |
| // Step 7 |
| if (desc.isConfigurable() || desc.isEnumerable() != current.isEnumerable()) |
| throw MakeTypeError("redefine_disallowed", ["defineProperty"]); |
| // Step 9 |
| if (IsDataDescriptor(current) != IsDataDescriptor(desc)) |
| throw MakeTypeError("redefine_disallowed", ["defineProperty"]); |
| // Step 10 |
| if (IsDataDescriptor(current) && IsDataDescriptor(desc)) { |
| if (!current.isWritable() && desc.isWritable()) |
| throw MakeTypeError("redefine_disallowed", ["defineProperty"]); |
| if (!current.isWritable() && desc.hasValue() && |
| !SameValue(desc.getValue(), current.getValue())) { |
| throw MakeTypeError("redefine_disallowed", ["defineProperty"]); |
| } |
| } |
| // Step 11 |
| if (IsAccessorDescriptor(desc) && IsAccessorDescriptor(current)) { |
| if (desc.hasSetter() && !SameValue(desc.getSet(), current.getSet())){ |
| throw MakeTypeError("redefine_disallowed", ["defineProperty"]); |
| } |
| if (desc.hasGetter() && !SameValue(desc.getGet(),current.getGet())) |
| throw MakeTypeError("redefine_disallowed", ["defineProperty"]); |
| } |
| } |
| |
| // 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)) { |
| if (desc.hasWritable()) { |
| flag |= desc.isWritable() ? 0 : READ_ONLY; |
| } else if (!IS_UNDEFINED(current)) { |
| flag |= current.isWritable() ? 0 : READ_ONLY; |
| } else { |
| flag |= 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_SPEC_OBJECT(obj)) |
| throw MakeTypeError("obj_ctor_property_non_object", ["getPrototypeOf"]); |
| return obj.__proto__; |
| } |
| |
| |
| // ES5 section 15.2.3.3 |
| function ObjectGetOwnPropertyDescriptor(obj, p) { |
| if (!IS_SPEC_OBJECT(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_SPEC_OBJECT(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 unique strings. |
| var propertySet = {}; |
| var j = 0; |
| for (var i = 0; i < propertyNames.length; ++i) { |
| var name = ToString(propertyNames[i]); |
| // We need to check for the exact property value since for intrinsic |
| // properties like toString if(propertySet["toString"]) will always |
| // succeed. |
| if (propertySet[name] === true) |
| continue; |
| propertySet[name] = true; |
| propertyNames[j++] = name; |
| } |
| propertyNames.length = j; |
| |
| return propertyNames; |
| } |
| |
| |
| // ES5 section 15.2.3.5. |
| function ObjectCreate(proto, properties) { |
| if (!IS_SPEC_OBJECT(proto) && proto !== null) { |
| 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_SPEC_OBJECT(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_SPEC_OBJECT(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; |
| } |
| |
| |
| // ES5 section 15.2.3.8. |
| function ObjectSeal(obj) { |
| if (!IS_SPEC_OBJECT(obj)) { |
| throw MakeTypeError("obj_ctor_property_non_object", ["seal"]); |
| } |
| var names = ObjectGetOwnPropertyNames(obj); |
| for (var key in names) { |
| var name = names[key]; |
| var desc = GetOwnProperty(obj, name); |
| if (desc.isConfigurable()) desc.setConfigurable(false); |
| DefineOwnProperty(obj, name, desc, true); |
| } |
| ObjectPreventExtension(obj); |
| } |
| |
| |
| // ES5 section 15.2.3.9. |
| function ObjectFreeze(obj) { |
| if (!IS_SPEC_OBJECT(obj)) { |
| throw MakeTypeError("obj_ctor_property_non_object", ["freeze"]); |
| } |
| var names = ObjectGetOwnPropertyNames(obj); |
| for (var key in names) { |
| var name = names[key]; |
| var desc = GetOwnProperty(obj, name); |
| if (IsDataDescriptor(desc)) desc.setWritable(false); |
| if (desc.isConfigurable()) desc.setConfigurable(false); |
| DefineOwnProperty(obj, name, desc, true); |
| } |
| ObjectPreventExtension(obj); |
| } |
| |
| |
| // ES5 section 15.2.3.10 |
| function ObjectPreventExtension(obj) { |
| if (!IS_SPEC_OBJECT(obj)) { |
| throw MakeTypeError("obj_ctor_property_non_object", ["preventExtension"]); |
| } |
| %PreventExtensions(obj); |
| return obj; |
| } |
| |
| |
| // ES5 section 15.2.3.11 |
| function ObjectIsSealed(obj) { |
| if (!IS_SPEC_OBJECT(obj)) { |
| throw MakeTypeError("obj_ctor_property_non_object", ["isSealed"]); |
| } |
| var names = ObjectGetOwnPropertyNames(obj); |
| for (var key in names) { |
| var name = names[key]; |
| var desc = GetOwnProperty(obj, name); |
| if (desc.isConfigurable()) return false; |
| } |
| if (!ObjectIsExtensible(obj)) { |
| return true; |
| } |
| return false; |
| } |
| |
| |
| // ES5 section 15.2.3.12 |
| function ObjectIsFrozen(obj) { |
| if (!IS_SPEC_OBJECT(obj)) { |
| throw MakeTypeError("obj_ctor_property_non_object", ["isFrozen"]); |
| } |
| var names = ObjectGetOwnPropertyNames(obj); |
| for (var key in names) { |
| var name = names[key]; |
| var desc = GetOwnProperty(obj, name); |
| if (IsDataDescriptor(desc) && desc.isWritable()) return false; |
| if (desc.isConfigurable()) return false; |
| } |
| if (!ObjectIsExtensible(obj)) { |
| return true; |
| } |
| return false; |
| } |
| |
| |
| // ES5 section 15.2.3.13 |
| function ObjectIsExtensible(obj) { |
| if (!IS_SPEC_OBJECT(obj)) { |
| throw MakeTypeError("obj_ctor_property_non_object", ["preventExtension"]); |
| } |
| return %IsExtensible(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, |
| "freeze", ObjectFreeze, |
| "getPrototypeOf", ObjectGetPrototypeOf, |
| "getOwnPropertyDescriptor", ObjectGetOwnPropertyDescriptor, |
| "getOwnPropertyNames", ObjectGetOwnPropertyNames, |
| "isExtensible", ObjectIsExtensible, |
| "isFrozen", ObjectIsFrozen, |
| "isSealed", ObjectIsSealed, |
| "preventExtensions", ObjectPreventExtension, |
| "seal", ObjectSeal |
| )); |
| } |
| |
| 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(); |