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// vim: ts=4 sts=4 sw=4 expandtab
// -- kriskowal Kris Kowal Copyright (C) 2009-2011 MIT License
// -- tlrobinson Tom Robinson Copyright (C) 2009-2010 MIT License (Narwhal Project)
// -- dantman Daniel Friesen Copyright (C) 2010 XXX TODO License or CLA
// -- fschaefer Florian Schäfer Copyright (C) 2010 MIT License
// -- Gozala Irakli Gozalishvili Copyright (C) 2010 MIT License
// -- kitcambridge Kit Cambridge Copyright (C) 2011 MIT License
// -- kossnocorp Sasha Koss XXX TODO License or CLA
// -- bryanforbes Bryan Forbes XXX TODO License or CLA
// -- killdream Quildreen Motta Copyright (C) 2011 MIT Licence
// -- michaelficarra Michael Ficarra Copyright (C) 2011 3-clause BSD License
// -- sharkbrainguy Gerard Paapu Copyright (C) 2011 MIT License
// -- bbqsrc Brendan Molloy XXX TODO License or CLA
// -- iwyg XXX TODO License or CLA
// -- DomenicDenicola Domenic Denicola XXX TODO License or CLA
// -- xavierm02 Montillet Xavier XXX TODO License or CLA
// -- Raynos Raynos XXX TODO License or CLA
// -- samsonjs Sami Samhuri XXX TODO License or CLA
// -- rwldrn Rick Waldron Copyright (C) 2011 MIT License
// -- lexer Alexey Zakharov XXX TODO License or CLA
/*!
Copyright (c) 2009, 280 North Inc. http://280north.com/
MIT License. http://github.com/280north/narwhal/blob/master/README.md
*/
// Module systems magic dance
(function (definition) {
// RequireJS
if (typeof define == "function") {
define(definition);
// CommonJS and <script>
} else {
definition();
}
})(function () {
/**
* Brings an environment as close to ECMAScript 5 compliance
* as is possible with the facilities of erstwhile engines.
*
* ES5 Draft
* http://www.ecma-international.org/publications/files/drafts/tc39-2009-050.pdf
*
* NOTE: this is a draft, and as such, the URL is subject to change. If the
* link is broken, check in the parent directory for the latest TC39 PDF.
* http://www.ecma-international.org/publications/files/drafts/
*
* Previous ES5 Draft
* http://www.ecma-international.org/publications/files/drafts/tc39-2009-025.pdf
* This is a broken link to the previous draft of ES5 on which most of the
* numbered specification references and quotes herein were taken. Updating
* these references and quotes to reflect the new document would be a welcome
* volunteer project.
*
* @module
*/
/*whatsupdoc*/
//
// Function
// ========
//
// ES-5 15.3.4.5
// http://www.ecma-international.org/publications/files/drafts/tc39-2009-025.pdf
if (!Function.prototype.bind) {
Function.prototype.bind = function bind(that) { // .length is 1
// 1. Let Target be the this value.
var target = this;
// 2. If IsCallable(Target) is false, throw a TypeError exception.
if (typeof target != "function")
throw new TypeError(); // TODO message
// 3. Let A be a new (possibly empty) internal list of all of the
// argument values provided after thisArg (arg1, arg2 etc), in order.
// XXX slicedArgs will stand in for "A" if used
var args = slice.call(arguments, 1); // for normal call
// 4. Let F be a new native ECMAScript object.
// 9. Set the [[Prototype]] internal property of F to the standard
// built-in Function prototype object as specified in 15.3.3.1.
// 10. Set the [[Call]] internal property of F as described in
// 15.3.4.5.1.
// 11. Set the [[Construct]] internal property of F as described in
// 15.3.4.5.2.
// 12. Set the [[HasInstance]] internal property of F as described in
// 15.3.4.5.3.
// 13. The [[Scope]] internal property of F is unused and need not
// exist.
var bound = function () {
if (this instanceof bound) {
// 15.3.4.5.2 [[Construct]]
// When the [[Construct]] internal method of a function object,
// F that was created using the bind function is called with a
// list of arguments ExtraArgs the following steps are taken:
// 1. Let target be the value of F's [[TargetFunction]]
// internal property.
// 2. If target has no [[Construct]] internal method, a
// TypeError exception is thrown.
// 3. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 4. Let args be a new list containing the same values as the
// list boundArgs in the same order followed by the same
// values as the list ExtraArgs in the same order.
var F = function(){};
F.prototype = target.prototype;
var self = new F;
var result = target.apply(
self,
args.concat(slice.call(arguments))
);
if (result !== null && Object(result) === result)
return result;
return self;
} else {
// 15.3.4.5.1 [[Call]]
// When the [[Call]] internal method of a function object, F,
// which was created using the bind function is called with a
// this value and a list of arguments ExtraArgs the following
// steps are taken:
// 1. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 2. Let boundThis be the value of F's [[BoundThis]] internal
// property.
// 3. Let target be the value of F's [[TargetFunction]] internal
// property.
// 4. Let args be a new list containing the same values as the list
// boundArgs in the same order followed by the same values as
// the list ExtraArgs in the same order. 5. Return the
// result of calling the [[Call]] internal method of target
// providing boundThis as the this value and providing args
// as the arguments.
// equiv: target.call(this, ...boundArgs, ...args)
return target.apply(
that,
args.concat(slice.call(arguments))
);
}
};
// XXX bound.length is never writable, so don't even try
//
// 16. The length own property of F is given attributes as specified in
// 15.3.5.1.
// TODO
// 17. Set the [[Extensible]] internal property of F to true.
// TODO
// 18. Call the [[DefineOwnProperty]] internal method of F with
// arguments "caller", PropertyDescriptor {[[Value]]: null,
// [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]:
// false}, and false.
// TODO
// 19. Call the [[DefineOwnProperty]] internal method of F with
// arguments "arguments", PropertyDescriptor {[[Value]]: null,
// [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]:
// false}, and false.
// TODO
// NOTE Function objects created using Function.prototype.bind do not
// have a prototype property.
// XXX can't delete it in pure-js.
return bound;
};
}
// Shortcut to an often accessed properties, in order to avoid multiple
// dereference that costs universally.
// _Please note: Shortcuts are defined after `Function.prototype.bind` as we
// us it in defining shortcuts.
var call = Function.prototype.call;
var prototypeOfArray = Array.prototype;
var prototypeOfObject = Object.prototype;
var slice = prototypeOfArray.slice;
var toString = call.bind(prototypeOfObject.toString);
var owns = call.bind(prototypeOfObject.hasOwnProperty);
// If JS engine supports accessors creating shortcuts.
var defineGetter;
var defineSetter;
var lookupGetter;
var lookupSetter;
var supportsAccessors;
if ((supportsAccessors = owns(prototypeOfObject, "__defineGetter__"))) {
defineGetter = call.bind(prototypeOfObject.__defineGetter__);
defineSetter = call.bind(prototypeOfObject.__defineSetter__);
lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
}
//
// Array
// =====
//
// ES5 15.4.3.2
if (!Array.isArray) {
Array.isArray = function isArray(obj) {
return toString(obj) == "[object Array]";
};
}
// The IsCallable() check in the Array functions
// has been replaced with a strict check on the
// internal class of the object to trap cases where
// the provided function was actually a regular
// expression literal, which in V8 and
// JavaScriptCore is a typeof "function". Only in
// V8 are regular expression literals permitted as
// reduce parameters, so it is desirable in the
// general case for the shim to match the more
// strict and common behavior of rejecting regular
// expressions.
// ES5 15.4.4.18
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/foreach
if (!Array.prototype.forEach) {
Array.prototype.forEach = function forEach(fun /*, thisp*/) {
var self = toObject(this),
thisp = arguments[1],
i = 0,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
while (i < length) {
if (i in self) {
// Invoke the callback function with call, passing arguments:
// context, property value, property key, thisArg object context
fun.call(thisp, self[i], i, self);
}
i++;
}
};
}
// ES5 15.4.4.19
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
if (!Array.prototype.map) {
Array.prototype.map = function map(fun /*, thisp*/) {
var self = toObject(this),
length = self.length >>> 0,
result = Array(length),
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
for (var i = 0; i < length; i++) {
if (i in self)
result[i] = fun.call(thisp, self[i], i, self);
}
return result;
};
}
// ES5 15.4.4.20
if (!Array.prototype.filter) {
Array.prototype.filter = function filter(fun /*, thisp */) {
var self = toObject(this),
length = self.length >>> 0,
result = [],
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
for (var i = 0; i < length; i++) {
if (i in self && fun.call(thisp, self[i], i, self))
result.push(self[i]);
}
return result;
};
}
// ES5 15.4.4.16
if (!Array.prototype.every) {
Array.prototype.every = function every(fun /*, thisp */) {
var self = toObject(this),
length = self.length >>> 0,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
for (var i = 0; i < length; i++) {
if (i in self && !fun.call(thisp, self[i], i, self))
return false;
}
return true;
};
}
// ES5 15.4.4.17
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
if (!Array.prototype.some) {
Array.prototype.some = function some(fun /*, thisp */) {
var self = toObject(this),
length = self.length >>> 0,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
for (var i = 0; i < length; i++) {
if (i in self && fun.call(thisp, self[i], i, self))
return true;
}
return false;
};
}
// ES5 15.4.4.21
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
if (!Array.prototype.reduce) {
Array.prototype.reduce = function reduce(fun /*, initial*/) {
var self = toObject(this),
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
// no value to return if no initial value and an empty array
if (!length && arguments.length == 1)
throw new TypeError(); // TODO message
var i = 0;
var result;
if (arguments.length >= 2) {
result = arguments[1];
} else {
do {
if (i in self) {
result = self[i++];
break;
}
// if array contains no values, no initial value to return
if (++i >= length)
throw new TypeError(); // TODO message
} while (true);
}
for (; i < length; i++) {
if (i in self)
result = fun.call(void 0, result, self[i], i, self);
}
return result;
};
}
// ES5 15.4.4.22
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
if (!Array.prototype.reduceRight) {
Array.prototype.reduceRight = function reduceRight(fun /*, initial*/) {
var self = toObject(this),
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
// no value to return if no initial value, empty array
if (!length && arguments.length == 1)
throw new TypeError(); // TODO message
var result, i = length - 1;
if (arguments.length >= 2) {
result = arguments[1];
} else {
do {
if (i in self) {
result = self[i--];
break;
}
// if array contains no values, no initial value to return
if (--i < 0)
throw new TypeError(); // TODO message
} while (true);
}
do {
if (i in this)
result = fun.call(void 0, result, self[i], i, self);
} while (i--);
return result;
};
}
// ES5 15.4.4.14
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
if (!Array.prototype.indexOf) {
Array.prototype.indexOf = function indexOf(sought /*, fromIndex */ ) {
var self = toObject(this),
length = self.length >>> 0;
if (!length)
return -1;
var i = 0;
if (arguments.length > 1)
i = toInteger(arguments[1]);
// handle negative indices
i = i >= 0 ? i : length - Math.abs(i);
for (; i < length; i++) {
if (i in self && self[i] === sought) {
return i;
}
}
return -1;
};
}
// ES5 15.4.4.15
if (!Array.prototype.lastIndexOf) {
Array.prototype.lastIndexOf = function lastIndexOf(sought /*, fromIndex */) {
var self = toObject(this),
length = self.length >>> 0;
if (!length)
return -1;
var i = length - 1;
if (arguments.length > 1)
i = toInteger(arguments[1]);
// handle negative indices
i = i >= 0 ? i : length - Math.abs(i);
for (; i >= 0; i--) {
if (i in self && sought === self[i])
return i;
}
return -1;
};
}
//
// Object
// ======
//
// ES5 15.2.3.2
if (!Object.getPrototypeOf) {
// https://github.com/kriskowal/es5-shim/issues#issue/2
// http://ejohn.org/blog/objectgetprototypeof/
// recommended by fschaefer on github
Object.getPrototypeOf = function getPrototypeOf(object) {
return object.__proto__ || (
object.constructor ?
object.constructor.prototype :
prototypeOfObject
);
};
}
// ES5 15.2.3.3
if (!Object.getOwnPropertyDescriptor) {
var ERR_NON_OBJECT = "Object.getOwnPropertyDescriptor called on a " +
"non-object: ";
Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(object, property) {
if ((typeof object != "object" && typeof object != "function") || object === null)
throw new TypeError(ERR_NON_OBJECT + object);
// If object does not owns property return undefined immediately.
if (!owns(object, property))
return;
var descriptor, getter, setter;
// If object has a property then it's for sure both `enumerable` and
// `configurable`.
descriptor = { enumerable: true, configurable: true };
// If JS engine supports accessor properties then property may be a
// getter or setter.
if (supportsAccessors) {
// Unfortunately `__lookupGetter__` will return a getter even
// if object has own non getter property along with a same named
// inherited getter. To avoid misbehavior we temporary remove
// `__proto__` so that `__lookupGetter__` will return getter only
// if it's owned by an object.
var prototype = object.__proto__;
object.__proto__ = prototypeOfObject;
var getter = lookupGetter(object, property);
var setter = lookupSetter(object, property);
// Once we have getter and setter we can put values back.
object.__proto__ = prototype;
if (getter || setter) {
if (getter) descriptor.get = getter;
if (setter) descriptor.set = setter;
// If it was accessor property we're done and return here
// in order to avoid adding `value` to the descriptor.
return descriptor;
}
}
// If we got this far we know that object has an own property that is
// not an accessor so we set it as a value and return descriptor.
descriptor.value = object[property];
return descriptor;
};
}
// ES5 15.2.3.4
if (!Object.getOwnPropertyNames) {
Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
return Object.keys(object);
};
}
// ES5 15.2.3.5
if (!Object.create) {
Object.create = function create(prototype, properties) {
var object;
if (prototype === null) {
object = { "__proto__": null };
} else {
if (typeof prototype != "object")
throw new TypeError("typeof prototype["+(typeof prototype)+"] != 'object'");
var Type = function () {};
Type.prototype = prototype;
object = new Type();
// IE has no built-in implementation of `Object.getPrototypeOf`
// neither `__proto__`, but this manually setting `__proto__` will
// guarantee that `Object.getPrototypeOf` will work as expected with
// objects created using `Object.create`
object.__proto__ = prototype;
}
if (properties !== void 0)
Object.defineProperties(object, properties);
return object;
};
}
// ES5 15.2.3.6
// Patch for WebKit and IE8 standard mode
// Designed by hax <hax.github.com>
// related issue: https://github.com/kriskowal/es5-shim/issues#issue/5
// IE8 Reference:
// http://msdn.microsoft.com/en-us/library/dd282900.aspx
// http://msdn.microsoft.com/en-us/library/dd229916.aspx
// WebKit Bugs:
// https://bugs.webkit.org/show_bug.cgi?id=36423
function doesDefinePropertyWork(object) {
try {
Object.defineProperty(object, "sentinel", {});
return "sentinel" in object;
} catch (exception) {
// returns falsy
}
}
// check whether defineProperty works if it's given. Otherwise,
// shim partially.
if (Object.defineProperty) {
var definePropertyWorksOnObject = doesDefinePropertyWork({});
var definePropertyWorksOnDom = typeof document == "undefined" ||
doesDefinePropertyWork(document.createElement("div"));
if (!definePropertyWorksOnObject || !definePropertyWorksOnDom) {
var definePropertyFallback = Object.defineProperty;
}
}
if (!Object.defineProperty || definePropertyFallback) {
var ERR_NON_OBJECT_DESCRIPTOR = "Property description must be an object: ";
var ERR_NON_OBJECT_TARGET = "Object.defineProperty called on non-object: "
var ERR_ACCESSORS_NOT_SUPPORTED = "getters & setters can not be defined " +
"on this javascript engine";
Object.defineProperty = function defineProperty(object, property, descriptor) {
if ((typeof object != "object" && typeof object != "function") || object === null)
throw new TypeError(ERR_NON_OBJECT_TARGET + object);
if ((typeof descriptor != "object" && typeof descriptor != "function") || descriptor === null)
throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR + descriptor);
// make a valiant attempt to use the real defineProperty
// for I8's DOM elements.
if (definePropertyFallback) {
try {
return definePropertyFallback.call(Object, object, property, descriptor);
} catch (exception) {
// try the shim if the real one doesn't work
}
}
// If it's a data property.
if (owns(descriptor, "value")) {
// fail silently if "writable", "enumerable", or "configurable"
// are requested but not supported
/*
// alternate approach:
if ( // can't implement these features; allow false but not true
!(owns(descriptor, "writable") ? descriptor.writable : true) ||
!(owns(descriptor, "enumerable") ? descriptor.enumerable : true) ||
!(owns(descriptor, "configurable") ? descriptor.configurable : true)
)
throw new RangeError(
"This implementation of Object.defineProperty does not " +
"support configurable, enumerable, or writable."
);
*/
if (supportsAccessors && (lookupGetter(object, property) ||
lookupSetter(object, property)))
{
// As accessors are supported only on engines implementing
// `__proto__` we can safely override `__proto__` while defining
// a property to make sure that we don't hit an inherited
// accessor.
var prototype = object.__proto__;
object.__proto__ = prototypeOfObject;
// Deleting a property anyway since getter / setter may be
// defined on object itself.
delete object[property];
object[property] = descriptor.value;
// Setting original `__proto__` back now.
object.__proto__ = prototype;
} else {
object[property] = descriptor.value;
}
} else {
if (!supportsAccessors)
throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
// If we got that far then getters and setters can be defined !!
if (owns(descriptor, "get"))
defineGetter(object, property, descriptor.get);
if (owns(descriptor, "set"))
defineSetter(object, property, descriptor.set);
}
return object;
};
}
// ES5 15.2.3.7
if (!Object.defineProperties) {
Object.defineProperties = function defineProperties(object, properties) {
for (var property in properties) {
if (owns(properties, property))
Object.defineProperty(object, property, properties[property]);
}
return object;
};
}
// ES5 15.2.3.8
if (!Object.seal) {
Object.seal = function seal(object) {
// this is misleading and breaks feature-detection, but
// allows "securable" code to "gracefully" degrade to working
// but insecure code.
return object;
};
}
// ES5 15.2.3.9
if (!Object.freeze) {
Object.freeze = function freeze(object) {
// this is misleading and breaks feature-detection, but
// allows "securable" code to "gracefully" degrade to working
// but insecure code.
return object;
};
}
// detect a Rhino bug and patch it
try {
Object.freeze(function () {});
} catch (exception) {
Object.freeze = (function freeze(freezeObject) {
return function freeze(object) {
if (typeof object == "function") {
return object;
} else {
return freezeObject(object);
}
};
})(Object.freeze);
}
// ES5 15.2.3.10
if (!Object.preventExtensions) {
Object.preventExtensions = function preventExtensions(object) {
// this is misleading and breaks feature-detection, but
// allows "securable" code to "gracefully" degrade to working
// but insecure code.
return object;
};
}
// ES5 15.2.3.11
if (!Object.isSealed) {
Object.isSealed = function isSealed(object) {
return false;
};
}
// ES5 15.2.3.12
if (!Object.isFrozen) {
Object.isFrozen = function isFrozen(object) {
return false;
};
}
// ES5 15.2.3.13
if (!Object.isExtensible) {
Object.isExtensible = function isExtensible(object) {
// 1. If Type(O) is not Object throw a TypeError exception.
if (Object(object) === object) {
throw new TypeError(); // TODO message
}
// 2. Return the Boolean value of the [[Extensible]] internal property of O.
var name = '';
while (owns(object, name)) {
name += '?';
}
object[name] = true;
var returnValue = owns(object, name);
delete object[name];
return returnValue;
};
}
// ES5 15.2.3.14
// http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
if (!Object.keys) {
var hasDontEnumBug = true,
dontEnums = [
"toString",
"toLocaleString",
"valueOf",
"hasOwnProperty",
"isPrototypeOf",
"propertyIsEnumerable",
"constructor"
],
dontEnumsLength = dontEnums.length;
for (var key in {"toString": null})
hasDontEnumBug = false;
Object.keys = function keys(object) {
if ((typeof object != "object" && typeof object != "function") || object === null)
throw new TypeError("Object.keys called on a non-object");
var keys = [];
for (var name in object) {
if (owns(object, name)) {
keys.push(name);
}
}
if (hasDontEnumBug) {
for (var i = 0, ii = dontEnumsLength; i < ii; i++) {
var dontEnum = dontEnums[i];
if (owns(object, dontEnum)) {
keys.push(dontEnum);
}
}
}
return keys;
};
}
//
// Date
// ====
//
// ES5 15.9.5.43
// Format a Date object as a string according to a simplified subset of the ISO 8601
// standard as defined in 15.9.1.15.
if (!Date.prototype.toISOString) {
Date.prototype.toISOString = function toISOString() {
var result, length, value;
if (!isFinite(this))
throw new RangeError;
// the date time string format is specified in 15.9.1.15.
result = [this.getUTCFullYear(), this.getUTCMonth() + 1, this.getUTCDate(),
this.getUTCHours(), this.getUTCMinutes(), this.getUTCSeconds()];
length = result.length;
while (length--) {
value = result[length];
// pad months, days, hours, minutes, and seconds to have two digits.
if (value < 10)
result[length] = "0" + value;
}
// pad milliseconds to have three digits.
return result.slice(0, 3).join("-") + "T" + result.slice(3).join(":") + "." +
("000" + this.getUTCMilliseconds()).slice(-3) + "Z";
}
}
// ES5 15.9.4.4
if (!Date.now) {
Date.now = function now() {
return new Date().getTime();
};
}
// ES5 15.9.5.44
if (!Date.prototype.toJSON) {
Date.prototype.toJSON = function toJSON(key) {
// This function provides a String representation of a Date object for
// use by JSON.stringify (15.12.3). When the toJSON method is called
// with argument key, the following steps are taken:
// 1. Let O be the result of calling ToObject, giving it the this
// value as its argument.
// 2. Let tv be ToPrimitive(O, hint Number).
// 3. If tv is a Number and is not finite, return null.
// XXX
// 4. Let toISO be the result of calling the [[Get]] internal method of
// O with argument "toISOString".
// 5. If IsCallable(toISO) is false, throw a TypeError exception.
if (typeof this.toISOString != "function")
throw new TypeError(); // TODO message
// 6. Return the result of calling the [[Call]] internal method of
// toISO with O as the this value and an empty argument list.
return this.toISOString();
// NOTE 1 The argument is ignored.
// NOTE 2 The toJSON function is intentionally generic; it does not
// require that its this value be a Date object. Therefore, it can be
// transferred to other kinds of objects for use as a method. However,
// it does require that any such object have a toISOString method. An
// object is free to use the argument key to filter its
// stringification.
};
}
// 15.9.4.2 Date.parse (string)
// 15.9.1.15 Date Time String Format
// Date.parse
// based on work shared by Daniel Friesen (dantman)
// http://gist.github.com/303249
if (isNaN(Date.parse("2011-06-15T21:40:05+06:00"))) {
// XXX global assignment won't work in embeddings that use
// an alternate object for the context.
Date = (function(NativeDate) {
// Date.length === 7
var Date = function Date(Y, M, D, h, m, s, ms) {
var length = arguments.length;
if (this instanceof NativeDate) {
var date = length == 1 && String(Y) === Y ? // isString(Y)
// We explicitly pass it through parse:
new NativeDate(Date.parse(Y)) :
// We have to manually make calls depending on argument
// length here
length >= 7 ? new NativeDate(Y, M, D, h, m, s, ms) :
length >= 6 ? new NativeDate(Y, M, D, h, m, s) :
length >= 5 ? new NativeDate(Y, M, D, h, m) :
length >= 4 ? new NativeDate(Y, M, D, h) :
length >= 3 ? new NativeDate(Y, M, D) :
length >= 2 ? new NativeDate(Y, M) :
length >= 1 ? new NativeDate(Y) :
new NativeDate();
// Prevent mixups with unfixed Date object
date.constructor = Date;
return date;
}
return NativeDate.apply(this, arguments);
};
// 15.9.1.15 Date Time String Format. This pattern does not implement
// extended years (15.9.1.15.1), as `Date.UTC` cannot parse them.
var isoDateExpression = new RegExp("^" +
"(\\d{4})" + // four-digit year capture
"(?:-(\\d{2})" + // optional month capture
"(?:-(\\d{2})" + // optional day capture
"(?:" + // capture hours:minutes:seconds.milliseconds
"T(\\d{2})" + // hours capture
":(\\d{2})" + // minutes capture
"(?:" + // optional :seconds.milliseconds
":(\\d{2})" + // seconds capture
"(?:\\.(\\d{3}))?" + // milliseconds capture
")?" +
"(?:" + // capture UTC offset component
"Z|" + // UTC capture
"(?:" + // offset specifier +/-hours:minutes
"([-+])" + // sign capture
"(\\d{2})" + // hours offset capture
":(\\d{2})" + // minutes offset capture
")" +
")?)?)?)?" +
"$");
// Copy any custom methods a 3rd party library may have added
for (var key in NativeDate)
Date[key] = NativeDate[key];
// Copy "native" methods explicitly; they may be non-enumerable
Date.now = NativeDate.now;
Date.UTC = NativeDate.UTC;
Date.prototype = NativeDate.prototype;
Date.prototype.constructor = Date;
// Upgrade Date.parse to handle simplified ISO 8601 strings
Date.parse = function parse(string) {
var match = isoDateExpression.exec(string);
if (match) {
match.shift(); // kill match[0], the full match
// parse months, days, hours, minutes, seconds, and milliseconds
for (var i = 1; i < 7; i++) {
// provide default values if necessary
match[i] = +(match[i] || (i < 3 ? 1 : 0));
// match[1] is the month. Months are 0-11 in JavaScript
// `Date` objects, but 1-12 in ISO notation, so we
// decrement.
if (i == 1)
match[i]--;
}
// parse the UTC offset component
var minuteOffset = +match.pop(), hourOffset = +match.pop(), sign = match.pop();
// compute the explicit time zone offset if specified
var offset = 0;
if (sign) {
// detect invalid offsets and return early
if (hourOffset > 23 || minuteOffset > 59)
return NaN;
// express the provided time zone offset in minutes. The offset is
// negative for time zones west of UTC; positive otherwise.
offset = (hourOffset * 60 + minuteOffset) * 6e4 * (sign == "+" ? -1 : 1);
}
// compute a new UTC date value, accounting for the optional offset
return NativeDate.UTC.apply(this, match) + offset;
}
return NativeDate.parse.apply(this, arguments);
};
return Date;
})(Date);
}
//
// String
// ======
//
// ES5 15.5.4.20
var ws = "\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003" +
"\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028" +
"\u2029\uFEFF";
if (!String.prototype.trim || ws.trim()) {
// http://blog.stevenlevithan.com/archives/faster-trim-javascript
// http://perfectionkills.com/whitespace-deviations/
ws = "[" + ws + "]";
var trimBeginRegexp = new RegExp("^" + ws + ws + "*"),
trimEndRegexp = new RegExp(ws + ws + "*$");
String.prototype.trim = function trim() {
return String(this).replace(trimBeginRegexp, "").replace(trimEndRegexp, "");
};
}
//
// Util
// ======
//
// http://jsperf.com/to-integer
var toInteger = function (n) {
n = +n;