mirror of
https://github.com/MutableLoss/6502SimDesktop.git
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1106 lines
40 KiB
JavaScript
1106 lines
40 KiB
JavaScript
// vim: ts=4 sts=4 sw=4 expandtab
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// -- kriskowal Kris Kowal Copyright (C) 2009-2011 MIT License
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// -- tlrobinson Tom Robinson Copyright (C) 2009-2010 MIT License (Narwhal Project)
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// -- dantman Daniel Friesen Copyright (C) 2010 XXX TODO License or CLA
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// -- fschaefer Florian Schäfer Copyright (C) 2010 MIT License
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// -- Gozala Irakli Gozalishvili Copyright (C) 2010 MIT License
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// -- kitcambridge Kit Cambridge Copyright (C) 2011 MIT License
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// -- kossnocorp Sasha Koss XXX TODO License or CLA
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// -- bryanforbes Bryan Forbes XXX TODO License or CLA
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// -- killdream Quildreen Motta Copyright (C) 2011 MIT Licence
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// -- michaelficarra Michael Ficarra Copyright (C) 2011 3-clause BSD License
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// -- sharkbrainguy Gerard Paapu Copyright (C) 2011 MIT License
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// -- bbqsrc Brendan Molloy (C) 2011 Creative Commons Zero (public domain)
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// -- iwyg XXX TODO License or CLA
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// -- DomenicDenicola Domenic Denicola Copyright (C) 2011 MIT License
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// -- xavierm02 Montillet Xavier Copyright (C) 2011 MIT License
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// -- Raynos Jake Verbaten Copyright (C) 2011 MIT Licence
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// -- samsonjs Sami Samhuri Copyright (C) 2010 MIT License
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// -- rwldrn Rick Waldron Copyright (C) 2011 MIT License
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// -- lexer Alexey Zakharov XXX TODO License or CLA
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/*!
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Copyright (c) 2009, 280 North Inc. http://280north.com/
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MIT License. http://github.com/280north/narwhal/blob/master/README.md
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*/
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// Module systems magic dance
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(function (definition) {
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// RequireJS
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if (typeof define == "function") {
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define(definition);
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// CommonJS and <script>
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} else {
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definition();
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}
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})(function () {
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/**
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* Brings an environment as close to ECMAScript 5 compliance
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* as is possible with the facilities of erstwhile engines.
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*
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* Annotated ES5: http://es5.github.com/ (specific links below)
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* ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
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* Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/
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*/
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//
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// Function
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// ========
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//
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// ES-5 15.3.4.5
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// http://es5.github.com/#x15.3.4.5
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if (!Function.prototype.bind) {
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Function.prototype.bind = function bind(that) { // .length is 1
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// 1. Let Target be the this value.
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var target = this;
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// 2. If IsCallable(Target) is false, throw a TypeError exception.
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if (typeof target != "function") {
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throw new TypeError("Function.prototype.bind called on incompatible " + target);
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}
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// 3. Let A be a new (possibly empty) internal list of all of the
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// argument values provided after thisArg (arg1, arg2 etc), in order.
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// XXX slicedArgs will stand in for "A" if used
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var args = slice.call(arguments, 1); // for normal call
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// 4. Let F be a new native ECMAScript object.
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// 11. Set the [[Prototype]] internal property of F to the standard
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// built-in Function prototype object as specified in 15.3.3.1.
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// 12. Set the [[Call]] internal property of F as described in
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// 15.3.4.5.1.
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// 13. Set the [[Construct]] internal property of F as described in
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// 15.3.4.5.2.
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// 14. Set the [[HasInstance]] internal property of F as described in
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// 15.3.4.5.3.
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var bound = function () {
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if (this instanceof bound) {
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// 15.3.4.5.2 [[Construct]]
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// When the [[Construct]] internal method of a function object,
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// F that was created using the bind function is called with a
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// list of arguments ExtraArgs, the following steps are taken:
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// 1. Let target be the value of F's [[TargetFunction]]
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// internal property.
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// 2. If target has no [[Construct]] internal method, a
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// TypeError exception is thrown.
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// 3. Let boundArgs be the value of F's [[BoundArgs]] internal
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// property.
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// 4. Let args be a new list containing the same values as the
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// list boundArgs in the same order followed by the same
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// values as the list ExtraArgs in the same order.
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// 5. Return the result of calling the [[Construct]] internal
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// method of target providing args as the arguments.
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var F = function(){};
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F.prototype = target.prototype;
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var self = new F;
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var result = target.apply(
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self,
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args.concat(slice.call(arguments))
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);
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if (Object(result) === result) {
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return result;
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}
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return self;
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} else {
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// 15.3.4.5.1 [[Call]]
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// When the [[Call]] internal method of a function object, F,
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// which was created using the bind function is called with a
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// this value and a list of arguments ExtraArgs, the following
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// steps are taken:
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// 1. Let boundArgs be the value of F's [[BoundArgs]] internal
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// property.
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// 2. Let boundThis be the value of F's [[BoundThis]] internal
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// property.
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// 3. Let target be the value of F's [[TargetFunction]] internal
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// property.
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// 4. Let args be a new list containing the same values as the
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// list boundArgs in the same order followed by the same
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// values as the list ExtraArgs in the same order.
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// 5. Return the result of calling the [[Call]] internal method
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// of target providing boundThis as the this value and
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// providing args as the arguments.
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// equiv: target.call(this, ...boundArgs, ...args)
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return target.apply(
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that,
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args.concat(slice.call(arguments))
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);
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}
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};
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// XXX bound.length is never writable, so don't even try
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//
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// 15. If the [[Class]] internal property of Target is "Function", then
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// a. Let L be the length property of Target minus the length of A.
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// b. Set the length own property of F to either 0 or L, whichever is
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// larger.
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// 16. Else set the length own property of F to 0.
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// 17. Set the attributes of the length own property of F to the values
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// specified in 15.3.5.1.
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// TODO
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// 18. Set the [[Extensible]] internal property of F to true.
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// TODO
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// 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
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// 20. Call the [[DefineOwnProperty]] internal method of F with
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// arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
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// thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
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// false.
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// 21. Call the [[DefineOwnProperty]] internal method of F with
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// arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
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// [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
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// and false.
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// TODO
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// NOTE Function objects created using Function.prototype.bind do not
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// have a prototype property or the [[Code]], [[FormalParameters]], and
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// [[Scope]] internal properties.
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// XXX can't delete prototype in pure-js.
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// 22. Return F.
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return bound;
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};
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}
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// Shortcut to an often accessed properties, in order to avoid multiple
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// dereference that costs universally.
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// _Please note: Shortcuts are defined after `Function.prototype.bind` as we
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// us it in defining shortcuts.
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var call = Function.prototype.call;
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var prototypeOfArray = Array.prototype;
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var prototypeOfObject = Object.prototype;
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var slice = prototypeOfArray.slice;
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// Having a toString local variable name breaks in Opera so use _toString.
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var _toString = call.bind(prototypeOfObject.toString);
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var owns = call.bind(prototypeOfObject.hasOwnProperty);
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// If JS engine supports accessors creating shortcuts.
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var defineGetter;
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var defineSetter;
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var lookupGetter;
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var lookupSetter;
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var supportsAccessors;
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if ((supportsAccessors = owns(prototypeOfObject, "__defineGetter__"))) {
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defineGetter = call.bind(prototypeOfObject.__defineGetter__);
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defineSetter = call.bind(prototypeOfObject.__defineSetter__);
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lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
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lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
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}
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//
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// Array
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// =====
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//
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// ES5 15.4.3.2
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// http://es5.github.com/#x15.4.3.2
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// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
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if (!Array.isArray) {
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Array.isArray = function isArray(obj) {
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return _toString(obj) == "[object Array]";
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};
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}
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// The IsCallable() check in the Array functions
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// has been replaced with a strict check on the
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// internal class of the object to trap cases where
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// the provided function was actually a regular
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// expression literal, which in V8 and
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// JavaScriptCore is a typeof "function". Only in
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// V8 are regular expression literals permitted as
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// reduce parameters, so it is desirable in the
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// general case for the shim to match the more
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// strict and common behavior of rejecting regular
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// expressions.
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// ES5 15.4.4.18
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// http://es5.github.com/#x15.4.4.18
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// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach
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if (!Array.prototype.forEach) {
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Array.prototype.forEach = function forEach(fun /*, thisp*/) {
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var self = toObject(this),
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thisp = arguments[1],
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i = -1,
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length = self.length >>> 0;
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// If no callback function or if callback is not a callable function
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if (_toString(fun) != "[object Function]") {
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throw new TypeError(); // TODO message
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}
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while (++i < length) {
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if (i in self) {
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// Invoke the callback function with call, passing arguments:
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// context, property value, property key, thisArg object context
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fun.call(thisp, self[i], i, self);
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}
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}
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};
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}
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// ES5 15.4.4.19
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// http://es5.github.com/#x15.4.4.19
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// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
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if (!Array.prototype.map) {
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Array.prototype.map = function map(fun /*, thisp*/) {
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var self = toObject(this),
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length = self.length >>> 0,
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result = Array(length),
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thisp = arguments[1];
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// If no callback function or if callback is not a callable function
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if (_toString(fun) != "[object Function]") {
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throw new TypeError(fun + " is not a function");
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}
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for (var i = 0; i < length; i++) {
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if (i in self)
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result[i] = fun.call(thisp, self[i], i, self);
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}
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return result;
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};
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}
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// ES5 15.4.4.20
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// http://es5.github.com/#x15.4.4.20
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// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter
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if (!Array.prototype.filter) {
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Array.prototype.filter = function filter(fun /*, thisp */) {
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var self = toObject(this),
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length = self.length >>> 0,
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result = [],
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value,
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thisp = arguments[1];
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// If no callback function or if callback is not a callable function
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if (_toString(fun) != "[object Function]") {
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throw new TypeError(fun + " is not a function");
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}
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for (var i = 0; i < length; i++) {
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if (i in self) {
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value = self[i];
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if (fun.call(thisp, value, i, self)) {
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result.push(value);
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}
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}
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}
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return result;
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};
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}
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// ES5 15.4.4.16
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// http://es5.github.com/#x15.4.4.16
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// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
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if (!Array.prototype.every) {
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Array.prototype.every = function every(fun /*, thisp */) {
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var self = toObject(this),
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length = self.length >>> 0,
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thisp = arguments[1];
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// If no callback function or if callback is not a callable function
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if (_toString(fun) != "[object Function]") {
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throw new TypeError(fun + " is not a function");
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}
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for (var i = 0; i < length; i++) {
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if (i in self && !fun.call(thisp, self[i], i, self)) {
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return false;
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}
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}
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return true;
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};
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}
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// ES5 15.4.4.17
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// http://es5.github.com/#x15.4.4.17
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// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
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if (!Array.prototype.some) {
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Array.prototype.some = function some(fun /*, thisp */) {
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var self = toObject(this),
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length = self.length >>> 0,
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thisp = arguments[1];
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// If no callback function or if callback is not a callable function
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if (_toString(fun) != "[object Function]") {
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throw new TypeError(fun + " is not a function");
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}
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for (var i = 0; i < length; i++) {
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if (i in self && fun.call(thisp, self[i], i, self)) {
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return true;
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}
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}
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return false;
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};
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}
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// ES5 15.4.4.21
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// http://es5.github.com/#x15.4.4.21
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// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
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if (!Array.prototype.reduce) {
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Array.prototype.reduce = function reduce(fun /*, initial*/) {
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var self = toObject(this),
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length = self.length >>> 0;
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// If no callback function or if callback is not a callable function
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if (_toString(fun) != "[object Function]") {
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throw new TypeError(fun + " is not a function");
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}
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// no value to return if no initial value and an empty array
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if (!length && arguments.length == 1) {
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throw new TypeError('reduce of empty array with no initial value');
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}
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var i = 0;
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var result;
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if (arguments.length >= 2) {
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result = arguments[1];
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} else {
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do {
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if (i in self) {
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result = self[i++];
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break;
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}
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// if array contains no values, no initial value to return
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if (++i >= length) {
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throw new TypeError('reduce of empty array with no initial value');
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}
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} while (true);
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}
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for (; i < length; i++) {
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if (i in self) {
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result = fun.call(void 0, result, self[i], i, self);
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}
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}
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return result;
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};
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}
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// ES5 15.4.4.22
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// http://es5.github.com/#x15.4.4.22
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// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
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if (!Array.prototype.reduceRight) {
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Array.prototype.reduceRight = function reduceRight(fun /*, initial*/) {
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var self = toObject(this),
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length = self.length >>> 0;
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// If no callback function or if callback is not a callable function
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if (_toString(fun) != "[object Function]") {
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throw new TypeError(fun + " is not a function");
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}
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// no value to return if no initial value, empty array
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if (!length && arguments.length == 1) {
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throw new TypeError('reduceRight of empty array with no initial value');
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}
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var result, i = length - 1;
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if (arguments.length >= 2) {
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result = arguments[1];
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} else {
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do {
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if (i in self) {
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result = self[i--];
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break;
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}
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// if array contains no values, no initial value to return
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if (--i < 0) {
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throw new TypeError('reduceRight of empty array with no initial value');
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}
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} while (true);
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}
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do {
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if (i in this) {
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result = fun.call(void 0, result, self[i], i, self);
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}
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} while (i--);
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return result;
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};
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}
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// ES5 15.4.4.14
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// http://es5.github.com/#x15.4.4.14
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// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
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if (!Array.prototype.indexOf) {
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|
Array.prototype.indexOf = function indexOf(sought /*, fromIndex */ ) {
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|
var self = toObject(this),
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length = self.length >>> 0;
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|
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|
if (!length) {
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return -1;
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}
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var i = 0;
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if (arguments.length > 1) {
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i = toInteger(arguments[1]);
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}
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|
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// handle negative indices
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i = i >= 0 ? i : Math.max(0, length + i);
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for (; i < length; i++) {
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if (i in self && self[i] === sought) {
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return i;
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}
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}
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|
return -1;
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|
};
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}
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|
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// ES5 15.4.4.15
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|
// http://es5.github.com/#x15.4.4.15
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// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
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|
if (!Array.prototype.lastIndexOf) {
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|
Array.prototype.lastIndexOf = function lastIndexOf(sought /*, fromIndex */) {
|
|
var self = toObject(this),
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|
length = self.length >>> 0;
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|
|
if (!length) {
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|
return -1;
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}
|
|
var i = length - 1;
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|
if (arguments.length > 1) {
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i = Math.min(i, toInteger(arguments[1]));
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}
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|
// handle negative indices
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i = i >= 0 ? i : length - Math.abs(i);
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|
for (; i >= 0; i--) {
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|
if (i in self && sought === self[i]) {
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|
return i;
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|
}
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|
}
|
|
return -1;
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|
};
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|
}
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|
|
//
|
|
// Object
|
|
// ======
|
|
//
|
|
|
|
// ES5 15.2.3.2
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|
// http://es5.github.com/#x15.2.3.2
|
|
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
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|
);
|
|
};
|
|
}
|
|
|
|
// ES5 15.2.3.3
|
|
// http://es5.github.com/#x15.2.3.3
|
|
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;
|
|
}
|
|
|
|
// If object has a property then it's for sure both `enumerable` and
|
|
// `configurable`.
|
|
var 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
|
|
// http://es5.github.com/#x15.2.3.4
|
|
if (!Object.getOwnPropertyNames) {
|
|
Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
|
|
return Object.keys(object);
|
|
};
|
|
}
|
|
|
|
// ES5 15.2.3.5
|
|
// http://es5.github.com/#x15.2.3.5
|
|
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
|
|
// http://es5.github.com/#x15.2.3.6
|
|
|
|
// 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
|
|
// http://es5.github.com/#x15.2.3.7
|
|
if (!Object.defineProperties) {
|
|
Object.defineProperties = function defineProperties(object, properties) {
|
|
for (var property in properties) {
|
|
if (owns(properties, property) && property != "__proto__") {
|
|
Object.defineProperty(object, property, properties[property]);
|
|
}
|
|
}
|
|
return object;
|
|
};
|
|
}
|
|
|
|
// ES5 15.2.3.8
|
|
// http://es5.github.com/#x15.2.3.8
|
|
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
|
|
// http://es5.github.com/#x15.2.3.9
|
|
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
|
|
// http://es5.github.com/#x15.2.3.10
|
|
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
|
|
// http://es5.github.com/#x15.2.3.11
|
|
if (!Object.isSealed) {
|
|
Object.isSealed = function isSealed(object) {
|
|
return false;
|
|
};
|
|
}
|
|
|
|
// ES5 15.2.3.12
|
|
// http://es5.github.com/#x15.2.3.12
|
|
if (!Object.isFrozen) {
|
|
Object.isFrozen = function isFrozen(object) {
|
|
return false;
|
|
};
|
|
}
|
|
|
|
// ES5 15.2.3.13
|
|
// http://es5.github.com/#x15.2.3.13
|
|
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://es5.github.com/#x15.2.3.14
|
|
if (!Object.keys) {
|
|
// http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
|
|
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
|
|
// http://es5.github.com/#x15.9.5.43
|
|
// This function returns a String value represent the instance in time
|
|
// represented by this Date object. The format of the String is the Date Time
|
|
// string format defined in 15.9.1.15. All fields are present in the String.
|
|
// The time zone is always UTC, denoted by the suffix Z. If the time value of
|
|
// this object is not a finite Number a RangeError exception is thrown.
|
|
if (!Date.prototype.toISOString || (new Date(-62198755200000).toISOString().indexOf('-000001') === -1)) {
|
|
Date.prototype.toISOString = function toISOString() {
|
|
var result, length, value, year;
|
|
if (!isFinite(this)) {
|
|
throw new RangeError("Date.prototype.toISOString called on non-finite value.");
|
|
}
|
|
|
|
// the date time string format is specified in 15.9.1.15.
|
|
result = [this.getUTCMonth() + 1, this.getUTCDate(),
|
|
this.getUTCHours(), this.getUTCMinutes(), this.getUTCSeconds()];
|
|
year = this.getUTCFullYear();
|
|
year = (year < 0 ? '-' : (year > 9999 ? '+' : '')) + ('00000' + Math.abs(year)).slice(0 <= year && year <= 9999 ? -4 : -6);
|
|
|
|
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 year + "-" + result.slice(0, 2).join("-") + "T" + result.slice(2).join(":") + "." +
|
|
("000" + this.getUTCMilliseconds()).slice(-3) + "Z";
|
|
}
|
|
}
|
|
|
|
// ES5 15.9.4.4
|
|
// http://es5.github.com/#x15.9.4.4
|
|
if (!Date.now) {
|
|
Date.now = function now() {
|
|
return new Date().getTime();
|
|
};
|
|
}
|
|
|
|
// ES5 15.9.5.44
|
|
// http://es5.github.com/#x15.9.5.44
|
|
// This function provides a String representation of a Date object for use by
|
|
// JSON.stringify (15.12.3).
|
|
if (!Date.prototype.toJSON) {
|
|
Date.prototype.toJSON = function toJSON(key) {
|
|
// 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('toISOString property is not callable');
|
|
}
|
|
// 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.
|
|
};
|
|
}
|
|
|
|
// ES5 15.9.4.2
|
|
// http://es5.github.com/#x15.9.4.2
|
|
// based on work shared by Daniel Friesen (dantman)
|
|
// http://gist.github.com/303249
|
|
if (!Date.parse || Date.parse("+275760-09-13T00:00:00.000Z") !== 8.64e15) {
|
|
// 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.
|
|
var isoDateExpression = new RegExp("^" +
|
|
"(\\d{4}|[\+\-]\\d{6})" + // four-digit year capture or sign + 6-digit extended year
|
|
"(?:-(\\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);
|
|
}
|
|
|
|
// Date.UTC for years between 0 and 99 converts year to 1900 + year
|
|
// The Gregorian calendar has a 400-year cycle, so
|
|
// to Date.UTC(year + 400, .... ) - 12622780800000 == Date.UTC(year, ...),
|
|
// where 12622780800000 - number of milliseconds in Gregorian calendar 400 years
|
|
var year = +match[0];
|
|
if (0 <= year && year <= 99) {
|
|
match[0] = year + 400;
|
|
return NativeDate.UTC.apply(this, match) + offset - 12622780800000;
|
|
}
|
|
|
|
// 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
|
|
// http://es5.github.com/#x15.5.4.20
|
|
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() {
|
|
if (this === undefined || this === null) {
|
|
throw new TypeError("can't convert "+this+" to object");
|
|
}
|
|
return String(this).replace(trimBeginRegexp, "").replace(trimEndRegexp, "");
|
|
};
|
|
}
|
|
|
|
//
|
|
// Util
|
|
// ======
|
|
//
|
|
|
|
// ES5 9.4
|
|
// http://es5.github.com/#x9.4
|
|
// http://jsperf.com/to-integer
|
|
var toInteger = function (n) {
|
|
n = +n;
|
|
if (n !== n) { // isNaN
|
|
n = 0;
|
|
} else if (n !== 0 && n !== (1/0) && n !== -(1/0)) {
|
|
n = (n > 0 || -1) * Math.floor(Math.abs(n));
|
|
}
|
|
return n;
|
|
};
|
|
|
|
var prepareString = "a"[0] != "a";
|
|
// ES5 9.9
|
|
// http://es5.github.com/#x9.9
|
|
var toObject = function (o) {
|
|
if (o == null) { // this matches both null and undefined
|
|
throw new TypeError("can't convert "+o+" to object");
|
|
}
|
|
// If the implementation doesn't support by-index access of
|
|
// string characters (ex. IE < 9), split the string
|
|
if (prepareString && typeof o == "string" && o) {
|
|
return o.split("");
|
|
}
|
|
return Object(o);
|
|
};
|
|
});
|