| // Copyright 2006-2007 Google Inc. 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 = %NumberNaN(1); |
| |
| |
| // ECMA 262 - 15.1.1.1. |
| %AddProperty(global, "NaN", $NaN, DONT_ENUM | DONT_DELETE); |
| |
| |
| // ECMA-262 - 15.1.1.2. |
| %AddProperty(global, "Infinity", %NumberPositiveInfinity(1), DONT_ENUM | DONT_DELETE); |
| |
| |
| // ECMA-262 - 15.1.1.3. |
| %AddProperty(global, "undefined", void 0, DONT_ENUM | DONT_DELETE); |
| |
| |
| // ECMA 262 - 15.1.4 |
| function $isNaN(number) { |
| return %NumberIsNaN(ToNumber(number)); |
| }; |
| %AddProperty(global, "isNaN", $isNaN, DONT_ENUM); |
| |
| |
| // ECMA 262 - 15.1.5 |
| function $isFinite(number) { |
| return %NumberIsFinite(ToNumber(number)); |
| }; |
| %AddProperty(global, "isFinite", $isFinite, DONT_ENUM); |
| |
| |
| // ECMA-262 - 15.1.2.2 |
| %AddProperty(global, "parseInt", function(string, radix) { |
| if (radix === void 0) { |
| radix = 0; |
| // 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)) { |
| if (string >= 0.01 && string < 1e9) |
| return $Math_floor(string); |
| if (string <= -0.01 && string > -1e9) |
| return - $Math_floor(-string); |
| } |
| } else { |
| radix = TO_INT32(radix); |
| if (!(radix == 0 || (2 <= radix && radix <= 36))) |
| return $NaN; |
| } |
| return %StringParseInt(ToString(string), radix); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 - 15.1.2.3 |
| %AddProperty(global, "parseFloat", function(string) { |
| return %StringParseFloat(ToString(string)); |
| }, DONT_ENUM); |
| |
| |
| // ---------------------------------------------------------------------------- |
| // Boolean (first part of definition) |
| |
| |
| %SetCode($Boolean, function(x) { |
| if (%IsConstructCall(this)) { |
| %_SetValueOf(this, ToBoolean(x)); |
| } else { |
| return ToBoolean(x); |
| } |
| }); |
| |
| %FunctionSetPrototype($Boolean, new $Boolean(false)); |
| |
| %AddProperty($Boolean.prototype, "constructor", $Boolean, DONT_ENUM); |
| |
| // ---------------------------------------------------------------------------- |
| // Object |
| |
| $Object.prototype.constructor = $Object; |
| |
| %AddProperty($Object.prototype, "toString", function() { |
| var c = %ClassOf(this); |
| // Hide Arguments from the outside. |
| if (c === 'Arguments') c = 'Object'; |
| return "[object " + c + "]"; |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.2.4.3, page 84. |
| %AddProperty($Object.prototype, "toLocaleString", function() { |
| return this.toString(); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.2.4.4, page 85. |
| %AddProperty($Object.prototype, "valueOf", function() { |
| return this; |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.2.4.5, page 85. |
| %AddProperty($Object.prototype, "hasOwnProperty", function(V) { |
| return %HasLocalProperty(ToObject(this), ToString(V)); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.2.4.6, page 85. |
| %AddProperty($Object.prototype, "isPrototypeOf", function(V) { |
| if (!IS_OBJECT(V) && !IS_FUNCTION(V)) return false; |
| return %IsInPrototypeChain(this, V); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262, section 15.2.4.6, page 85. |
| %AddProperty($Object.prototype, "propertyIsEnumerable", function(V) { |
| if (this == null) return false; |
| if (!IS_OBJECT(this) && !IS_FUNCTION(this)) return false; |
| return %IsPropertyEnumerable(this, ToString(V)); |
| }, DONT_ENUM); |
| |
| |
| // Extensions for providing property getters and setters. |
| %AddProperty($Object.prototype, "__defineGetter__", function(name, fun) { |
| if (this == null) throw new $TypeError('Object.prototype.__defineGetter__: this is Null'); |
| if (!IS_FUNCTION(fun)) throw new $TypeError('Object.prototype.__defineGetter__: Expecting function'); |
| return %DefineAccessor(ToObject(this), ToString(name), GETTER, fun); |
| }, DONT_ENUM); |
| |
| |
| |
| %AddProperty($Object.prototype, "__lookupGetter__", function(name) { |
| if (this == null) throw new $TypeError('Object.prototype.__lookupGetter__: this is Null'); |
| return %LookupAccessor(ToObject(this), ToString(name), GETTER); |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($Object.prototype, "__defineSetter__", function(name, fun) { |
| if (this == null) throw new $TypeError('Object.prototype.__defineSetter__: this is Null'); |
| if (!IS_FUNCTION(fun)) throw new $TypeError('Object.prototype.__defineSetter__: Expecting function'); |
| return %DefineAccessor(ToObject(this), ToString(name), SETTER, fun); |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($Object.prototype, "__lookupSetter__", function(name) { |
| if (this == null) throw new $TypeError('Object.prototype.__lookupSetter__: this is Null'); |
| return %LookupAccessor(ToObject(this), ToString(name), SETTER); |
| }, DONT_ENUM); |
| |
| |
| %SetCode($Object, function(x) { |
| if (%IsConstructCall(this)) { |
| if (x == null) return this; |
| return ToObject(x); |
| } else { |
| if (x == null) return { }; |
| return ToObject(x); |
| } |
| }); |
| |
| |
| // ---------------------------------------------------------------------------- |
| // Global stuff... |
| |
| %AddProperty(global, "eval", function(x) { |
| if (!IS_STRING(x)) return x; |
| |
| var f = %CompileString(x, true); |
| if (!IS_FUNCTION(f)) return f; |
| |
| return f.call(%EvalReceiver(this)); |
| }, DONT_ENUM); |
| |
| |
| // execScript for IE compatibility. |
| %AddProperty(global, "execScript", function(expr, lang) { |
| // NOTE: We don't care about the character casing. |
| if (!lang || /javascript/i.test(lang)) { |
| %CompileString(ToString(expr), false)(); |
| } |
| return null; |
| }, DONT_ENUM); |
| |
| |
| // ---------------------------------------------------------------------------- |
| // Boolean |
| |
| %AddProperty($Boolean.prototype, "toString", function() { |
| // NOTE: Both Boolean objects and values can enter here as |
| // 'this'. This is not as dictated by ECMA-262. |
| if (!IS_BOOLEAN(this) && %ClassOf(this) !== 'Boolean') |
| throw new $TypeError('Boolean.prototype.toString is not generic'); |
| return ToString(%_ValueOf(this)); |
| }, DONT_ENUM); |
| |
| |
| %AddProperty($Boolean.prototype, "valueOf", function() { |
| // NOTE: Both Boolean objects and values can enter here as |
| // 'this'. This is not as dictated by ECMA-262. |
| if (!IS_BOOLEAN(this) && %ClassOf(this) !== 'Boolean') |
| throw new $TypeError('Boolean.prototype.valueOf is not generic'); |
| return %_ValueOf(this); |
| }, DONT_ENUM); |
| |
| |
| // ---------------------------------------------------------------------------- |
| // Number |
| |
| // Set the Number function and constructor. |
| %SetCode($Number, function(x) { |
| var value = %_ArgumentsLength() == 0 ? 0 : ToNumber(x); |
| if (%IsConstructCall(this)) { |
| %_SetValueOf(this, value); |
| } else { |
| return value; |
| } |
| }); |
| |
| %FunctionSetPrototype($Number, new $Number(0)); |
| |
| %AddProperty($Number.prototype, "constructor", $Number, DONT_ENUM); |
| |
| // ECMA-262 section 15.7.3.1. |
| %AddProperty($Number, "MAX_VALUE", %NumberMaxValue(1), DONT_ENUM | DONT_DELETE | READ_ONLY); |
| |
| // ECMA-262 section 15.7.3.2. |
| %AddProperty($Number, "MIN_VALUE", %NumberMinValue(1), DONT_ENUM | DONT_DELETE | READ_ONLY); |
| |
| // ECMA-262 section 15.7.3.3. |
| %AddProperty($Number, "NaN", $NaN, DONT_ENUM | DONT_DELETE | READ_ONLY); |
| |
| // ECMA-262 section 15.7.3.4. |
| %AddProperty($Number, "NEGATIVE_INFINITY", %NumberNegativeInfinity(1), DONT_ENUM | DONT_DELETE | READ_ONLY); |
| |
| // ECMA-262 section 15.7.3.5. |
| %AddProperty($Number, "POSITIVE_INFINITY", %NumberPositiveInfinity(1), DONT_ENUM | DONT_DELETE | READ_ONLY); |
| |
| // ECMA-262 section 15.7.4.2. |
| %AddProperty($Number.prototype, "toString", function(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 (%ClassOf(this) !== 'Number') |
| 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 $RangeError('toString() radix argument must be between 2 and 36'); |
| } |
| // Convert the number to a string in the given radix. |
| return %NumberToRadixString(number, radix); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.7.4.3 |
| %AddProperty($Number.prototype, "toLocaleString", function() { |
| return this.toString(); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.7.4.4 |
| %AddProperty($Number.prototype, "valueOf", function() { |
| // NOTE: Both Number objects and values can enter here as |
| // 'this'. This is not as dictated by ECMA-262. |
| if (!IS_NUMBER(this) && %ClassOf(this) !== 'Number') |
| throw new $TypeError('Number.prototype.valueOf is not generic'); |
| return %_ValueOf(this); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.7.4.5 |
| %AddProperty($Number.prototype, "toFixed", function(fractionDigits) { |
| var f = TO_INTEGER(fractionDigits); |
| if (f < 0 || f > 20) { |
| throw new $RangeError("toFixed() digits argument must be between 0 and 20"); |
| } |
| var x = ToNumber(this); |
| return %NumberToFixed(x, f); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.7.4.6 |
| %AddProperty($Number.prototype, "toExponential", function(fractionDigits) { |
| var f = -1; |
| if (!IS_UNDEFINED(fractionDigits)) { |
| f = TO_INTEGER(fractionDigits); |
| if (f < 0 || f > 20) { |
| throw new $RangeError("toExponential() argument must be between 0 and 20"); |
| } |
| } |
| var x = ToNumber(this); |
| return %NumberToExponential(x, f); |
| }, DONT_ENUM); |
| |
| |
| // ECMA-262 section 15.7.4.7 |
| %AddProperty($Number.prototype, "toPrecision", function(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); |
| }, DONT_ENUM); |
| |
| |
| // ---------------------------------------------------------------------------- |
| // Function |
| |
| $Function.prototype.constructor = $Function; |
| |
| |
| function FunctionSourceString(func) { |
| // NOTE: Both Function objects and values can enter here as |
| // 'func'. This is not as dictated by ECMA-262. |
| if (!IS_FUNCTION(func) && %ClassOf(func) != 'Function') |
| throw new $TypeError('Function.prototype.toString is not generic'); |
| |
| var source = %FunctionGetSourceCode(func); |
| if (!IS_STRING(source)) { |
| var name = %FunctionGetName(func); |
| if (name) { |
| // Mimic what KJS does. |
| return 'function ' + name + '() { [native code] }'; |
| } else { |
| return 'function () { [native code] }'; |
| } |
| } |
| |
| // Censor occurrences of internal calls. We do that for all |
| // functions and don't cache under the assumption that people rarly |
| // convert functions to strings. Note that we (apparently) can't |
| // use regular expression literals in natives files. |
| var regexp = ORIGINAL_REGEXP("%(\\w+\\()", "gm"); |
| if (source.match(regexp)) source = source.replace(regexp, "$1"); |
| var name = %FunctionGetName(func); |
| return 'function ' + name + source; |
| }; |
| |
| |
| %AddProperty($Function.prototype, "toString", function() { |
| return FunctionSourceString(this); |
| }, DONT_ENUM); |
| |
| |
| function NewFunction(arg1) { // length == 1 |
| var n = %_ArgumentsLength(); |
| var p = ''; |
| if (n > 1) { |
| p = new $Array(n - 1); |
| // Explicitly convert all parameters to strings. |
| // Array.prototype.join replaces null with empty strings which is |
| // not appropriate. |
| for (var i = 0; i < n - 1; i++) p[i] = ToString(%_Arguments(i)); |
| p = p.join(','); |
| // If the formal parameters string include ) - an illegal |
| // character - it may make the combined function expression |
| // compile. We avoid this problem by checking for this early on. |
| if (p.indexOf(')') != -1) throw MakeSyntaxError('unable_to_parse',[]); |
| } |
| var body = (n > 0) ? ToString(%_Arguments(n - 1)) : ''; |
| var source = '(function anonymous(' + p + ') { ' + body + ' })'; |
| |
| // The call to SetNewFunctionAttributes will ensure the prototype |
| // property of the resulting function is enumerable (ECMA262, 15.3.5.2). |
| return %SetNewFunctionAttributes(%CompileString(source, false)()); |
| }; |
| |
| %SetCode($Function, NewFunction); |
| |
| |
| // NOTE: The following functions (call and apply) are only used in this |
| // form on the ARM platform. On IA-32 they are handled through specialized |
| // builtins; see builtins-ia32.cc. |
| |
| %AddProperty($Function.prototype, "call", function(receiver) { |
| // Make sure the receiver of this call is a function. If it isn't |
| // we "fake" a call of it (without the right arguments) to force |
| // an exception to be thrown. |
| if (!IS_FUNCTION(this)) this(); |
| |
| // If receiver is null or undefined set the receiver to the global |
| // object. If the receiver isn't an object, we convert the |
| // receiver to an object. |
| if (receiver == null) receiver = global; |
| else if (!IS_OBJECT(receiver)) receiver = ToObject(receiver); |
| |
| %_SetThisFunction(this); |
| %_SetThis(receiver); |
| |
| var len = %_GetArgumentsLength(1); |
| return %_ShiftDownAndTailCall(len ? len - 1 : 0); |
| }, DONT_ENUM); |
| |
| |
| // This implementation of Function.prototype.apply replaces the stack frame |
| // of the apply call with the new stack frame containing the arguments from |
| // the args array. |
| %AddProperty($Function.prototype, "apply", function(receiver, args) { |
| var length = (args == null) ? 0 : ToUint32(args.length); |
| |
| // We can handle any number of apply arguments if the stack is |
| // big enough, but sanity check the value to avoid overflow when |
| // multiplying with pointer size. |
| if (length > 0x800000) { |
| throw new $RangeError( |
| "Function.prototype.apply cannot support " + length + " arguments."); |
| } |
| |
| if (!IS_FUNCTION(this)) { |
| throw new $TypeError('Function.prototype.apply was called on ' + this.toString() + ', which is a ' + (typeof this) + ' and not a function'); |
| } |
| |
| // Make sure args has the right type. |
| if (args != null && %ClassOf(args) !== 'Array' && %ClassOf(args) !== 'Arguments') { |
| throw new $TypeError('Function.prototype.apply: args has wrong type'); |
| } |
| |
| // If receiver is null or undefined set the receiver to the global |
| // object. If the receiver isn't an object, we convert the |
| // receiver to an object. |
| if (receiver == null) receiver = global; |
| else if (!IS_OBJECT(receiver)) receiver = ToObject(receiver); |
| |
| %_SetThisFunction(this); |
| %_SetThis(receiver); |
| |
| var arguments_length = %_GetArgumentsLength(2); |
| |
| // This method has 2 formal arguments so if less are passed, then space has |
| // been made. |
| if (arguments_length < 2) |
| arguments_length = 2; |
| |
| // Move some stuff to locals so they don't get overwritten when we start |
| // expanding the args array. |
| var saved_args = args; |
| |
| if (arguments_length > length) { |
| // We have too many arguments - we need to squash the frame. |
| %_SquashFrame(arguments_length, length); |
| } else if (arguments_length != length) { |
| // We have too few spaces for arguments - we need to expand the frame. |
| if (!%_ExpandFrame(arguments_length, length)) { |
| throw new $RangeError( |
| "Function.prototype.apply cannot find stack space for " + length + " arguments."); |
| } |
| // GC doesn't like junk in the arguments! |
| for (var i = 0; i < length; i++) { |
| %_SetArgument(i, 0, length); |
| } |
| } |
| |
| // Update-number-of-arguments field to keep things looking consistent for |
| // stack traces, and uses of arguments or arguments.length. |
| %_SetArgumentsLength(length); |
| |
| // NOTE: For the fast case this should be implemented in assembler, |
| // which would allow us to omit bounds and class checks galore. The |
| // assembler version could fall back to this implementation if |
| // tricky stuff is found, like arrays implemented as dictionaries or |
| // holes in arrays. |
| for (var i = 0; i < length; i++) { |
| %_SetArgument(i, saved_args[i], length); |
| } |
| |
| // Replaces the current frame with the new call. This has the added effect |
| // of removing apply from the stack trace entirely, which matches the |
| // behaviour of Firefox. |
| return %_TailCallWithArguments(length); |
| }, DONT_ENUM); |
| |
| |