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452 lines
17 KiB
452 lines
17 KiB
/* eslint-disable */
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/* jscs: disable */
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'use strict';
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// pulled specific shims from https://github.com/es-shims/es5-shim
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var ArrayPrototype = Array.prototype;
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var ObjectPrototype = Object.prototype;
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var FunctionPrototype = Function.prototype;
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var StringPrototype = String.prototype;
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var array_slice = ArrayPrototype.slice;
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var _toString = ObjectPrototype.toString;
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var isFunction = function (val) {
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return ObjectPrototype.toString.call(val) === '[object Function]';
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};
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var isArray = function isArray(obj) {
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return _toString.call(obj) === '[object Array]';
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};
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var isString = function isString(obj) {
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return _toString.call(obj) === '[object String]';
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};
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var supportsDescriptors = Object.defineProperty && (function () {
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try {
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Object.defineProperty({}, 'x', {});
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return true;
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} catch (e) { /* this is ES3 */
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return false;
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}
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}());
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// Define configurable, writable and non-enumerable props
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// if they don't exist.
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var defineProperty;
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if (supportsDescriptors) {
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defineProperty = function (object, name, method, forceAssign) {
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if (!forceAssign && (name in object)) { return; }
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Object.defineProperty(object, name, {
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configurable: true,
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enumerable: false,
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writable: true,
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value: method
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});
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};
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} else {
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defineProperty = function (object, name, method, forceAssign) {
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if (!forceAssign && (name in object)) { return; }
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object[name] = method;
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};
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}
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var defineProperties = function (object, map, forceAssign) {
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for (var name in map) {
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if (ObjectPrototype.hasOwnProperty.call(map, name)) {
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defineProperty(object, name, map[name], forceAssign);
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}
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}
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};
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var toObject = function (o) {
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if (o == null) { // this matches both null and undefined
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throw new TypeError("can't convert " + o + ' to object');
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}
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return Object(o);
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};
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//
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// Util
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// ======
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//
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// ES5 9.4
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// http://es5.github.com/#x9.4
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// http://jsperf.com/to-integer
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function toInteger(num) {
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var n = +num;
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if (n !== n) { // isNaN
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n = 0;
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} else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
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n = (n > 0 || -1) * Math.floor(Math.abs(n));
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}
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return n;
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}
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function ToUint32(x) {
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return x >>> 0;
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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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function Empty() {}
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defineProperties(FunctionPrototype, {
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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 (!isFunction(target)) {
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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 = array_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 binder = 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 result = target.apply(
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this,
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args.concat(array_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 this;
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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(array_slice.call(arguments))
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);
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}
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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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var boundLength = Math.max(0, target.length - args.length);
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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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var boundArgs = [];
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for (var i = 0; i < boundLength; i++) {
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boundArgs.push('$' + i);
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}
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// XXX Build a dynamic function with desired amount of arguments is the only
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// way to set the length property of a function.
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// In environments where Content Security Policies enabled (Chrome extensions,
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// for ex.) all use of eval or Function costructor throws an exception.
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// However in all of these environments Function.prototype.bind exists
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// and so this code will never be executed.
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var bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder);
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if (target.prototype) {
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Empty.prototype = target.prototype;
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bound.prototype = new Empty();
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// Clean up dangling references.
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Empty.prototype = null;
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}
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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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//
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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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defineProperties(Array, { isArray: isArray });
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var boxedString = Object('a');
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var splitString = boxedString[0] !== 'a' || !(0 in boxedString);
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var properlyBoxesContext = function properlyBoxed(method) {
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// Check node 0.6.21 bug where third parameter is not boxed
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var properlyBoxesNonStrict = true;
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var properlyBoxesStrict = true;
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if (method) {
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method.call('foo', function (_, __, context) {
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if (typeof context !== 'object') { properlyBoxesNonStrict = false; }
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});
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method.call([1], function () {
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'use strict';
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properlyBoxesStrict = typeof this === 'string';
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}, 'x');
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}
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return !!method && properlyBoxesNonStrict && properlyBoxesStrict;
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};
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defineProperties(ArrayPrototype, {
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forEach: function forEach(fun /*, thisp*/) {
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var object = toObject(this),
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self = splitString && isString(this) ? this.split('') : object,
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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 (!isFunction(fun)) {
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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
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// context
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fun.call(thisp, self[i], i, object);
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}
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}
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}
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}, !properlyBoxesContext(ArrayPrototype.forEach));
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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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var hasFirefox2IndexOfBug = Array.prototype.indexOf && [0, 1].indexOf(1, 2) !== -1;
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defineProperties(ArrayPrototype, {
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indexOf: function indexOf(sought /*, fromIndex */ ) {
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var self = splitString && isString(this) ? this.split('') : 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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}
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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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// 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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}, hasFirefox2IndexOfBug);
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//
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// String
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// ======
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//
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// ES5 15.5.4.14
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// http://es5.github.com/#x15.5.4.14
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// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
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// Many browsers do not split properly with regular expressions or they
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// do not perform the split correctly under obscure conditions.
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// See http://blog.stevenlevithan.com/archives/cross-browser-split
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// I've tested in many browsers and this seems to cover the deviant ones:
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// 'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
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// '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
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// 'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
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// [undefined, "t", undefined, "e", ...]
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// ''.split(/.?/) should be [], not [""]
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// '.'.split(/()()/) should be ["."], not ["", "", "."]
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var string_split = StringPrototype.split;
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if (
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'ab'.split(/(?:ab)*/).length !== 2 ||
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'.'.split(/(.?)(.?)/).length !== 4 ||
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'tesst'.split(/(s)*/)[1] === 't' ||
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'test'.split(/(?:)/, -1).length !== 4 ||
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''.split(/.?/).length ||
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'.'.split(/()()/).length > 1
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) {
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(function () {
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var compliantExecNpcg = /()??/.exec('')[1] === void 0; // NPCG: nonparticipating capturing group
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StringPrototype.split = function (separator, limit) {
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var string = this;
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if (separator === void 0 && limit === 0) {
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return [];
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}
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// If `separator` is not a regex, use native split
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if (_toString.call(separator) !== '[object RegExp]') {
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return string_split.call(this, separator, limit);
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}
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var output = [],
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flags = (separator.ignoreCase ? 'i' : '') +
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(separator.multiline ? 'm' : '') +
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(separator.extended ? 'x' : '') + // Proposed for ES6
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(separator.sticky ? 'y' : ''), // Firefox 3+
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lastLastIndex = 0,
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// Make `global` and avoid `lastIndex` issues by working with a copy
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separator2, match, lastIndex, lastLength;
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separator = new RegExp(separator.source, flags + 'g');
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string += ''; // Type-convert
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if (!compliantExecNpcg) {
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// Doesn't need flags gy, but they don't hurt
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separator2 = new RegExp('^' + separator.source + '$(?!\\s)', flags);
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}
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/* Values for `limit`, per the spec:
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* If undefined: 4294967295 // Math.pow(2, 32) - 1
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* If 0, Infinity, or NaN: 0
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* If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
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* If negative number: 4294967296 - Math.floor(Math.abs(limit))
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* If other: Type-convert, then use the above rules
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*/
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limit = limit === void 0 ?
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-1 >>> 0 : // Math.pow(2, 32) - 1
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ToUint32(limit);
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while (match = separator.exec(string)) {
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// `separator.lastIndex` is not reliable cross-browser
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lastIndex = match.index + match[0].length;
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if (lastIndex > lastLastIndex) {
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output.push(string.slice(lastLastIndex, match.index));
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// Fix browsers whose `exec` methods don't consistently return `undefined` for
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// nonparticipating capturing groups
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if (!compliantExecNpcg && match.length > 1) {
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match[0].replace(separator2, function () {
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for (var i = 1; i < arguments.length - 2; i++) {
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if (arguments[i] === void 0) {
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match[i] = void 0;
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}
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}
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});
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}
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if (match.length > 1 && match.index < string.length) {
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ArrayPrototype.push.apply(output, match.slice(1));
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}
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lastLength = match[0].length;
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lastLastIndex = lastIndex;
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if (output.length >= limit) {
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break;
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}
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}
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if (separator.lastIndex === match.index) {
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separator.lastIndex++; // Avoid an infinite loop
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}
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}
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if (lastLastIndex === string.length) {
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if (lastLength || !separator.test('')) {
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output.push('');
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}
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} else {
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output.push(string.slice(lastLastIndex));
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}
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return output.length > limit ? output.slice(0, limit) : output;
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};
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}());
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// [bugfix, chrome]
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// If separator is undefined, then the result array contains just one String,
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// which is the this value (converted to a String). If limit is not undefined,
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// then the output array is truncated so that it contains no more than limit
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// elements.
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// "0".split(undefined, 0) -> []
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} else if ('0'.split(void 0, 0).length) {
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StringPrototype.split = function split(separator, limit) {
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if (separator === void 0 && limit === 0) { return []; }
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return string_split.call(this, separator, limit);
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};
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}
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// ECMA-262, 3rd B.2.3
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// Not an ECMAScript standard, although ECMAScript 3rd Edition has a
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// non-normative section suggesting uniform semantics and it should be
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// normalized across all browsers
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// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
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var string_substr = StringPrototype.substr;
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var hasNegativeSubstrBug = ''.substr && '0b'.substr(-1) !== 'b';
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defineProperties(StringPrototype, {
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substr: function substr(start, length) {
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return string_substr.call(
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this,
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start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,
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length
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);
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}
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}, hasNegativeSubstrBug);
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