diff options
Diffstat (limited to 'web/src/vendor/benchmark/benchmark.js')
| -rw-r--r-- | web/src/vendor/benchmark/benchmark.js | 3919 |
1 files changed, 0 insertions, 3919 deletions
diff --git a/web/src/vendor/benchmark/benchmark.js b/web/src/vendor/benchmark/benchmark.js deleted file mode 100644 index db2c9958..00000000 --- a/web/src/vendor/benchmark/benchmark.js +++ /dev/null @@ -1,3919 +0,0 @@ -/*! - * Benchmark.js v1.0.0 <http://benchmarkjs.com/> - * Copyright 2010-2012 Mathias Bynens <http://mths.be/> - * Based on JSLitmus.js, copyright Robert Kieffer <http://broofa.com/> - * Modified by John-David Dalton <http://allyoucanleet.com/> - * Available under MIT license <http://mths.be/mit> - */ -;(function(window, undefined) { - 'use strict'; - - /** Used to assign each benchmark an incrimented id */ - var counter = 0; - - /** Detect DOM document object */ - var doc = isHostType(window, 'document') && document; - - /** Detect free variable `define` */ - var freeDefine = typeof define == 'function' && - typeof define.amd == 'object' && define.amd && define; - - /** Detect free variable `exports` */ - var freeExports = typeof exports == 'object' && exports && - (typeof global == 'object' && global && global == global.global && (window = global), exports); - - /** Detect free variable `require` */ - var freeRequire = typeof require == 'function' && require; - - /** Used to crawl all properties regardless of enumerability */ - var getAllKeys = Object.getOwnPropertyNames; - - /** Used to get property descriptors */ - var getDescriptor = Object.getOwnPropertyDescriptor; - - /** Used in case an object doesn't have its own method */ - var hasOwnProperty = {}.hasOwnProperty; - - /** Used to check if an object is extensible */ - var isExtensible = Object.isExtensible || function() { return true; }; - - /** Used to access Wade Simmons' Node microtime module */ - var microtimeObject = req('microtime'); - - /** Used to access the browser's high resolution timer */ - var perfObject = isHostType(window, 'performance') && performance; - - /** Used to call the browser's high resolution timer */ - var perfName = perfObject && ( - perfObject.now && 'now' || - perfObject.webkitNow && 'webkitNow' - ); - - /** Used to access Node's high resolution timer */ - var processObject = isHostType(window, 'process') && process; - - /** Used to check if an own property is enumerable */ - var propertyIsEnumerable = {}.propertyIsEnumerable; - - /** Used to set property descriptors */ - var setDescriptor = Object.defineProperty; - - /** Used to resolve a value's internal [[Class]] */ - var toString = {}.toString; - - /** Used to prevent a `removeChild` memory leak in IE < 9 */ - var trash = doc && doc.createElement('div'); - - /** Used to integrity check compiled tests */ - var uid = 'uid' + (+new Date); - - /** Used to avoid infinite recursion when methods call each other */ - var calledBy = {}; - - /** Used to avoid hz of Infinity */ - var divisors = { - '1': 4096, - '2': 512, - '3': 64, - '4': 8, - '5': 0 - }; - - /** - * T-Distribution two-tailed critical values for 95% confidence - * http://www.itl.nist.gov/div898/handbook/eda/section3/eda3672.htm - */ - var tTable = { - '1': 12.706,'2': 4.303, '3': 3.182, '4': 2.776, '5': 2.571, '6': 2.447, - '7': 2.365, '8': 2.306, '9': 2.262, '10': 2.228, '11': 2.201, '12': 2.179, - '13': 2.16, '14': 2.145, '15': 2.131, '16': 2.12, '17': 2.11, '18': 2.101, - '19': 2.093, '20': 2.086, '21': 2.08, '22': 2.074, '23': 2.069, '24': 2.064, - '25': 2.06, '26': 2.056, '27': 2.052, '28': 2.048, '29': 2.045, '30': 2.042, - 'infinity': 1.96 - }; - - /** - * Critical Mann-Whitney U-values for 95% confidence - * http://www.saburchill.com/IBbiology/stats/003.html - */ - var uTable = { - '5': [0, 1, 2], - '6': [1, 2, 3, 5], - '7': [1, 3, 5, 6, 8], - '8': [2, 4, 6, 8, 10, 13], - '9': [2, 4, 7, 10, 12, 15, 17], - '10': [3, 5, 8, 11, 14, 17, 20, 23], - '11': [3, 6, 9, 13, 16, 19, 23, 26, 30], - '12': [4, 7, 11, 14, 18, 22, 26, 29, 33, 37], - '13': [4, 8, 12, 16, 20, 24, 28, 33, 37, 41, 45], - '14': [5, 9, 13, 17, 22, 26, 31, 36, 40, 45, 50, 55], - '15': [5, 10, 14, 19, 24, 29, 34, 39, 44, 49, 54, 59, 64], - '16': [6, 11, 15, 21, 26, 31, 37, 42, 47, 53, 59, 64, 70, 75], - '17': [6, 11, 17, 22, 28, 34, 39, 45, 51, 57, 63, 67, 75, 81, 87], - '18': [7, 12, 18, 24, 30, 36, 42, 48, 55, 61, 67, 74, 80, 86, 93, 99], - '19': [7, 13, 19, 25, 32, 38, 45, 52, 58, 65, 72, 78, 85, 92, 99, 106, 113], - '20': [8, 14, 20, 27, 34, 41, 48, 55, 62, 69, 76, 83, 90, 98, 105, 112, 119, 127], - '21': [8, 15, 22, 29, 36, 43, 50, 58, 65, 73, 80, 88, 96, 103, 111, 119, 126, 134, 142], - '22': [9, 16, 23, 30, 38, 45, 53, 61, 69, 77, 85, 93, 101, 109, 117, 125, 133, 141, 150, 158], - '23': [9, 17, 24, 32, 40, 48, 56, 64, 73, 81, 89, 98, 106, 115, 123, 132, 140, 149, 157, 166, 175], - '24': [10, 17, 25, 33, 42, 50, 59, 67, 76, 85, 94, 102, 111, 120, 129, 138, 147, 156, 165, 174, 183, 192], - '25': [10, 18, 27, 35, 44, 53, 62, 71, 80, 89, 98, 107, 117, 126, 135, 145, 154, 163, 173, 182, 192, 201, 211], - '26': [11, 19, 28, 37, 46, 55, 64, 74, 83, 93, 102, 112, 122, 132, 141, 151, 161, 171, 181, 191, 200, 210, 220, 230], - '27': [11, 20, 29, 38, 48, 57, 67, 77, 87, 97, 107, 118, 125, 138, 147, 158, 168, 178, 188, 199, 209, 219, 230, 240, 250], - '28': [12, 21, 30, 40, 50, 60, 70, 80, 90, 101, 111, 122, 132, 143, 154, 164, 175, 186, 196, 207, 218, 228, 239, 250, 261, 272], - '29': [13, 22, 32, 42, 52, 62, 73, 83, 94, 105, 116, 127, 138, 149, 160, 171, 182, 193, 204, 215, 226, 238, 249, 260, 271, 282, 294], - '30': [13, 23, 33, 43, 54, 65, 76, 87, 98, 109, 120, 131, 143, 154, 166, 177, 189, 200, 212, 223, 235, 247, 258, 270, 282, 293, 305, 317] - }; - - /** - * An object used to flag environments/features. - * - * @static - * @memberOf Benchmark - * @type Object - */ - var support = {}; - - (function() { - - /** - * Detect Adobe AIR. - * - * @memberOf Benchmark.support - * @type Boolean - */ - support.air = isClassOf(window.runtime, 'ScriptBridgingProxyObject'); - - /** - * Detect if `arguments` objects have the correct internal [[Class]] value. - * - * @memberOf Benchmark.support - * @type Boolean - */ - support.argumentsClass = isClassOf(arguments, 'Arguments'); - - /** - * Detect if in a browser environment. - * - * @memberOf Benchmark.support - * @type Boolean - */ - support.browser = doc && isHostType(window, 'navigator'); - - /** - * Detect if strings support accessing characters by index. - * - * @memberOf Benchmark.support - * @type Boolean - */ - support.charByIndex = - // IE 8 supports indexes on string literals but not string objects - ('x'[0] + Object('x')[0]) == 'xx'; - - /** - * Detect if strings have indexes as own properties. - * - * @memberOf Benchmark.support - * @type Boolean - */ - support.charByOwnIndex = - // Narwhal, Rhino, RingoJS, IE 8, and Opera < 10.52 support indexes on - // strings but don't detect them as own properties - support.charByIndex && hasKey('x', '0'); - - /** - * Detect if Java is enabled/exposed. - * - * @memberOf Benchmark.support - * @type Boolean - */ - support.java = isClassOf(window.java, 'JavaPackage'); - - /** - * Detect if the Timers API exists. - * - * @memberOf Benchmark.support - * @type Boolean - */ - support.timeout = isHostType(window, 'setTimeout') && isHostType(window, 'clearTimeout'); - - /** - * Detect if functions support decompilation. - * - * @name decompilation - * @memberOf Benchmark.support - * @type Boolean - */ - try { - // Safari 2.x removes commas in object literals - // from Function#toString results - // http://webk.it/11609 - // Firefox 3.6 and Opera 9.25 strip grouping - // parentheses from Function#toString results - // http://bugzil.la/559438 - support.decompilation = Function( - 'return (' + (function(x) { return { 'x': '' + (1 + x) + '', 'y': 0 }; }) + ')' - )()(0).x === '1'; - } catch(e) { - support.decompilation = false; - } - - /** - * Detect ES5+ property descriptor API. - * - * @name descriptors - * @memberOf Benchmark.support - * @type Boolean - */ - try { - var o = {}; - support.descriptors = (setDescriptor(o, o, o), 'value' in getDescriptor(o, o)); - } catch(e) { - support.descriptors = false; - } - - /** - * Detect ES5+ Object.getOwnPropertyNames(). - * - * @name getAllKeys - * @memberOf Benchmark.support - * @type Boolean - */ - try { - support.getAllKeys = /\bvalueOf\b/.test(getAllKeys(Object.prototype)); - } catch(e) { - support.getAllKeys = false; - } - - /** - * Detect if own properties are iterated before inherited properties (all but IE < 9). - * - * @name iteratesOwnLast - * @memberOf Benchmark.support - * @type Boolean - */ - support.iteratesOwnFirst = (function() { - var props = []; - function ctor() { this.x = 1; } - ctor.prototype = { 'y': 1 }; - for (var prop in new ctor) { props.push(prop); } - return props[0] == 'x'; - }()); - - /** - * Detect if a node's [[Class]] is resolvable (all but IE < 9) - * and that the JS engine errors when attempting to coerce an object to a - * string without a `toString` property value of `typeof` "function". - * - * @name nodeClass - * @memberOf Benchmark.support - * @type Boolean - */ - try { - support.nodeClass = ({ 'toString': 0 } + '', toString.call(doc || 0) != '[object Object]'); - } catch(e) { - support.nodeClass = true; - } - }()); - - /** - * Timer object used by `clock()` and `Deferred#resolve`. - * - * @private - * @type Object - */ - var timer = { - - /** - * The timer namespace object or constructor. - * - * @private - * @memberOf timer - * @type Function|Object - */ - 'ns': Date, - - /** - * Starts the deferred timer. - * - * @private - * @memberOf timer - * @param {Object} deferred The deferred instance. - */ - 'start': null, // lazy defined in `clock()` - - /** - * Stops the deferred timer. - * - * @private - * @memberOf timer - * @param {Object} deferred The deferred instance. - */ - 'stop': null // lazy defined in `clock()` - }; - - /** Shortcut for inverse results */ - var noArgumentsClass = !support.argumentsClass, - noCharByIndex = !support.charByIndex, - noCharByOwnIndex = !support.charByOwnIndex; - - /** Math shortcuts */ - var abs = Math.abs, - floor = Math.floor, - max = Math.max, - min = Math.min, - pow = Math.pow, - sqrt = Math.sqrt; - - /*--------------------------------------------------------------------------*/ - - /** - * The Benchmark constructor. - * - * @constructor - * @param {String} name A name to identify the benchmark. - * @param {Function|String} fn The test to benchmark. - * @param {Object} [options={}] Options object. - * @example - * - * // basic usage (the `new` operator is optional) - * var bench = new Benchmark(fn); - * - * // or using a name first - * var bench = new Benchmark('foo', fn); - * - * // or with options - * var bench = new Benchmark('foo', fn, { - * - * // displayed by Benchmark#toString if `name` is not available - * 'id': 'xyz', - * - * // called when the benchmark starts running - * 'onStart': onStart, - * - * // called after each run cycle - * 'onCycle': onCycle, - * - * // called when aborted - * 'onAbort': onAbort, - * - * // called when a test errors - * 'onError': onError, - * - * // called when reset - * 'onReset': onReset, - * - * // called when the benchmark completes running - * 'onComplete': onComplete, - * - * // compiled/called before the test loop - * 'setup': setup, - * - * // compiled/called after the test loop - * 'teardown': teardown - * }); - * - * // or name and options - * var bench = new Benchmark('foo', { - * - * // a flag to indicate the benchmark is deferred - * 'defer': true, - * - * // benchmark test function - * 'fn': function(deferred) { - * // call resolve() when the deferred test is finished - * deferred.resolve(); - * } - * }); - * - * // or options only - * var bench = new Benchmark({ - * - * // benchmark name - * 'name': 'foo', - * - * // benchmark test as a string - * 'fn': '[1,2,3,4].sort()' - * }); - * - * // a test's `this` binding is set to the benchmark instance - * var bench = new Benchmark('foo', function() { - * 'My name is '.concat(this.name); // My name is foo - * }); - */ - function Benchmark(name, fn, options) { - var me = this; - - // allow instance creation without the `new` operator - if (me == null || me.constructor != Benchmark) { - return new Benchmark(name, fn, options); - } - // juggle arguments - if (isClassOf(name, 'Object')) { - // 1 argument (options) - options = name; - } - else if (isClassOf(name, 'Function')) { - // 2 arguments (fn, options) - options = fn; - fn = name; - } - else if (isClassOf(fn, 'Object')) { - // 2 arguments (name, options) - options = fn; - fn = null; - me.name = name; - } - else { - // 3 arguments (name, fn [, options]) - me.name = name; - } - setOptions(me, options); - me.id || (me.id = ++counter); - me.fn == null && (me.fn = fn); - me.stats = deepClone(me.stats); - me.times = deepClone(me.times); - } - - /** - * The Deferred constructor. - * - * @constructor - * @memberOf Benchmark - * @param {Object} clone The cloned benchmark instance. - */ - function Deferred(clone) { - var me = this; - if (me == null || me.constructor != Deferred) { - return new Deferred(clone); - } - me.benchmark = clone; - clock(me); - } - - /** - * The Event constructor. - * - * @constructor - * @memberOf Benchmark - * @param {String|Object} type The event type. - */ - function Event(type) { - var me = this; - return (me == null || me.constructor != Event) - ? new Event(type) - : (type instanceof Event) - ? type - : extend(me, { 'timeStamp': +new Date }, typeof type == 'string' ? { 'type': type } : type); - } - - /** - * The Suite constructor. - * - * @constructor - * @memberOf Benchmark - * @param {String} name A name to identify the suite. - * @param {Object} [options={}] Options object. - * @example - * - * // basic usage (the `new` operator is optional) - * var suite = new Benchmark.Suite; - * - * // or using a name first - * var suite = new Benchmark.Suite('foo'); - * - * // or with options - * var suite = new Benchmark.Suite('foo', { - * - * // called when the suite starts running - * 'onStart': onStart, - * - * // called between running benchmarks - * 'onCycle': onCycle, - * - * // called when aborted - * 'onAbort': onAbort, - * - * // called when a test errors - * 'onError': onError, - * - * // called when reset - * 'onReset': onReset, - * - * // called when the suite completes running - * 'onComplete': onComplete - * }); - */ - function Suite(name, options) { - var me = this; - - // allow instance creation without the `new` operator - if (me == null || me.constructor != Suite) { - return new Suite(name, options); - } - // juggle arguments - if (isClassOf(name, 'Object')) { - // 1 argument (options) - options = name; - } else { - // 2 arguments (name [, options]) - me.name = name; - } - setOptions(me, options); - } - - /*--------------------------------------------------------------------------*/ - - /** - * Note: Some array methods have been implemented in plain JavaScript to avoid - * bugs in IE, Opera, Rhino, and Mobile Safari. - * - * IE compatibility mode and IE < 9 have buggy Array `shift()` and `splice()` - * functions that fail to remove the last element, `object[0]`, of - * array-like-objects even though the `length` property is set to `0`. - * The `shift()` method is buggy in IE 8 compatibility mode, while `splice()` - * is buggy regardless of mode in IE < 9 and buggy in compatibility mode in IE 9. - * - * In Opera < 9.50 and some older/beta Mobile Safari versions using `unshift()` - * generically to augment the `arguments` object will pave the value at index 0 - * without incrimenting the other values's indexes. - * https://github.com/documentcloud/underscore/issues/9 - * - * Rhino and environments it powers, like Narwhal and RingoJS, may have - * buggy Array `concat()`, `reverse()`, `shift()`, `slice()`, `splice()` and - * `unshift()` functions that make sparse arrays non-sparse by assigning the - * undefined indexes a value of undefined. - * https://github.com/mozilla/rhino/commit/702abfed3f8ca043b2636efd31c14ba7552603dd - */ - - /** - * Creates an array containing the elements of the host array followed by the - * elements of each argument in order. - * - * @memberOf Benchmark.Suite - * @returns {Array} The new array. - */ - function concat() { - var value, - j = -1, - length = arguments.length, - result = slice.call(this), - index = result.length; - - while (++j < length) { - value = arguments[j]; - if (isClassOf(value, 'Array')) { - for (var k = 0, l = value.length; k < l; k++, index++) { - if (k in value) { - result[index] = value[k]; - } - } - } else { - result[index++] = value; - } - } - return result; - } - - /** - * Utility function used by `shift()`, `splice()`, and `unshift()`. - * - * @private - * @param {Number} start The index to start inserting elements. - * @param {Number} deleteCount The number of elements to delete from the insert point. - * @param {Array} elements The elements to insert. - * @returns {Array} An array of deleted elements. - */ - function insert(start, deleteCount, elements) { - // `result` should have its length set to the `deleteCount` - // see https://bugs.ecmascript.org/show_bug.cgi?id=332 - var deleteEnd = start + deleteCount, - elementCount = elements ? elements.length : 0, - index = start - 1, - length = start + elementCount, - object = this, - result = Array(deleteCount), - tail = slice.call(object, deleteEnd); - - // delete elements from the array - while (++index < deleteEnd) { - if (index in object) { - result[index - start] = object[index]; - delete object[index]; - } - } - // insert elements - index = start - 1; - while (++index < length) { - object[index] = elements[index - start]; - } - // append tail elements - start = index--; - length = max(0, (object.length >>> 0) - deleteCount + elementCount); - while (++index < length) { - if ((index - start) in tail) { - object[index] = tail[index - start]; - } else if (index in object) { - delete object[index]; - } - } - // delete excess elements - deleteCount = deleteCount > elementCount ? deleteCount - elementCount : 0; - while (deleteCount--) { - index = length + deleteCount; - if (index in object) { - delete object[index]; - } - } - object.length = length; - return result; - } - - /** - * Rearrange the host array's elements in reverse order. - * - * @memberOf Benchmark.Suite - * @returns {Array} The reversed array. - */ - function reverse() { - var upperIndex, - value, - index = -1, - object = Object(this), - length = object.length >>> 0, - middle = floor(length / 2); - - if (length > 1) { - while (++index < middle) { - upperIndex = length - index - 1; - value = upperIndex in object ? object[upperIndex] : uid; - if (index in object) { - object[upperIndex] = object[index]; - } else { - delete object[upperIndex]; - } - if (value != uid) { - object[index] = value; - } else { - delete object[index]; - } - } - } - return object; - } - - /** - * Removes the first element of the host array and returns it. - * - * @memberOf Benchmark.Suite - * @returns {Mixed} The first element of the array. - */ - function shift() { - return insert.call(this, 0, 1)[0]; - } - - /** - * Creates an array of the host array's elements from the start index up to, - * but not including, the end index. - * - * @memberOf Benchmark.Suite - * @param {Number} start The starting index. - * @param {Number} end The end index. - * @returns {Array} The new array. - */ - function slice(start, end) { - var index = -1, - object = Object(this), - length = object.length >>> 0, - result = []; - - start = toInteger(start); - start = start < 0 ? max(length + start, 0) : min(start, length); - start--; - end = end == null ? length : toInteger(end); - end = end < 0 ? max(length + end, 0) : min(end, length); - - while ((++index, ++start) < end) { - if (start in object) { - result[index] = object[start]; - } - } - return result; - } - - /** - * Allows removing a range of elements and/or inserting elements into the - * host array. - * - * @memberOf Benchmark.Suite - * @param {Number} start The start index. - * @param {Number} deleteCount The number of elements to delete. - * @param {Mixed} [val1, val2, ...] values to insert at the `start` index. - * @returns {Array} An array of removed elements. - */ - function splice(start, deleteCount) { - var object = Object(this), - length = object.length >>> 0; - - start = toInteger(start); - start = start < 0 ? max(length + start, 0) : min(start, length); - - // support the de-facto SpiderMonkey extension - // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/splice#Parameters - // https://bugs.ecmascript.org/show_bug.cgi?id=429 - deleteCount = arguments.length == 1 - ? length - start - : min(max(toInteger(deleteCount), 0), length - start); - - return insert.call(object, start, deleteCount, slice.call(arguments, 2)); - } - - /** - * Converts the specified `value` to an integer. - * - * @private - * @param {Mixed} value The value to convert. - * @returns {Number} The resulting integer. - */ - function toInteger(value) { - value = +value; - return value === 0 || !isFinite(value) ? value || 0 : value - (value % 1); - } - - /** - * Appends arguments to the host array. - * - * @memberOf Benchmark.Suite - * @returns {Number} The new length. - */ - function unshift() { - var object = Object(this); - insert.call(object, 0, 0, arguments); - return object.length; - } - - /*--------------------------------------------------------------------------*/ - - /** - * A generic `Function#bind` like method. - * - * @private - * @param {Function} fn The function to be bound to `thisArg`. - * @param {Mixed} thisArg The `this` binding for the given function. - * @returns {Function} The bound function. - */ - function bind(fn, thisArg) { - return function() { fn.apply(thisArg, arguments); }; - } - - /** - * Creates a function from the given arguments string and body. - * - * @private - * @param {String} args The comma separated function arguments. - * @param {String} body The function body. - * @returns {Function} The new function. - */ - function createFunction() { - // lazy define - createFunction = function(args, body) { - var result, - anchor = freeDefine ? define.amd : Benchmark, - prop = uid + 'createFunction'; - - runScript((freeDefine ? 'define.amd.' : 'Benchmark.') + prop + '=function(' + args + '){' + body + '}'); - result = anchor[prop]; - delete anchor[prop]; - return result; - }; - // fix JaegerMonkey bug - // http://bugzil.la/639720 - createFunction = support.browser && (createFunction('', 'return"' + uid + '"') || noop)() == uid ? createFunction : Function; - return createFunction.apply(null, arguments); - } - - /** - * Delay the execution of a function based on the benchmark's `delay` property. - * - * @private - * @param {Object} bench The benchmark instance. - * @param {Object} fn The function to execute. - */ - function delay(bench, fn) { - bench._timerId = setTimeout(fn, bench.delay * 1e3); - } - - /** - * Destroys the given element. - * - * @private - * @param {Element} element The element to destroy. - */ - function destroyElement(element) { - trash.appendChild(element); - trash.innerHTML = ''; - } - - /** - * Iterates over an object's properties, executing the `callback` for each. - * Callbacks may terminate the loop by explicitly returning `false`. - * - * @private - * @param {Object} object The object to iterate over. - * @param {Function} callback The function executed per own property. - * @param {Object} options The options object. - * @returns {Object} Returns the object iterated over. - */ - function forProps() { - var forShadowed, - skipSeen, - forArgs = true, - shadowed = ['constructor', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'valueOf']; - - (function(enumFlag, key) { - // must use a non-native constructor to catch the Safari 2 issue - function Klass() { this.valueOf = 0; }; - Klass.prototype.valueOf = 0; - // check various for-in bugs - for (key in new Klass) { - enumFlag += key == 'valueOf' ? 1 : 0; - } - // check if `arguments` objects have non-enumerable indexes - for (key in arguments) { - key == '0' && (forArgs = false); - } - // Safari 2 iterates over shadowed properties twice - // http://replay.waybackmachine.org/20090428222941/http://tobielangel.com/2007/1/29/for-in-loop-broken-in-safari/ - skipSeen = enumFlag == 2; - // IE < 9 incorrectly makes an object's properties non-enumerable if they have - // the same name as other non-enumerable properties in its prototype chain. - forShadowed = !enumFlag; - }(0)); - - // lazy define - forProps = function(object, callback, options) { - options || (options = {}); - - var result = object; - object = Object(object); - - var ctor, - key, - keys, - skipCtor, - done = !result, - which = options.which, - allFlag = which == 'all', - index = -1, - iteratee = object, - length = object.length, - ownFlag = allFlag || which == 'own', - seen = {}, - skipProto = isClassOf(object, 'Function'), - thisArg = options.bind; - - if (thisArg !== undefined) { - callback = bind(callback, thisArg); - } - // iterate all properties - if (allFlag && support.getAllKeys) { - for (index = 0, keys = getAllKeys(object), length = keys.length; index < length; index++) { - key = keys[index]; - if (callback(object[key], key, object) === false) { - break; - } - } - } - // else iterate only enumerable properties - else { - for (key in object) { - // Firefox < 3.6, Opera > 9.50 - Opera < 11.60, and Safari < 5.1 - // (if the prototype or a property on the prototype has been set) - // incorrectly set a function's `prototype` property [[Enumerable]] value - // to `true`. Because of this we standardize on skipping the `prototype` - // property of functions regardless of their [[Enumerable]] value. - if ((done = - !(skipProto && key == 'prototype') && - !(skipSeen && (hasKey(seen, key) || !(seen[key] = true))) && - (!ownFlag || ownFlag && hasKey(object, key)) && - callback(object[key], key, object) === false)) { - break; - } - } - // in IE < 9 strings don't support accessing characters by index - if (!done && (forArgs && isArguments(object) || - ((noCharByIndex || noCharByOwnIndex) && isClassOf(object, 'String') && - (iteratee = noCharByIndex ? object.split('') : object)))) { - while (++index < length) { - if ((done = - callback(iteratee[index], String(index), object) === false)) { - break; - } - } - } - if (!done && forShadowed) { - // Because IE < 9 can't set the `[[Enumerable]]` attribute of an existing - // property and the `constructor` property of a prototype defaults to - // non-enumerable, we manually skip the `constructor` property when we - // think we are iterating over a `prototype` object. - ctor = object.constructor; - skipCtor = ctor && ctor.prototype && ctor.prototype.constructor === ctor; - for (index = 0; index < 7; index++) { - key = shadowed[index]; - if (!(skipCtor && key == 'constructor') && - hasKey(object, key) && - callback(object[key], key, object) === false) { - break; - } - } - } - } - return result; - }; - return forProps.apply(null, arguments); - } - - /** - * Gets the name of the first argument from a function's source. - * - * @private - * @param {Function} fn The function. - * @returns {String} The argument name. - */ - function getFirstArgument(fn) { - return (!hasKey(fn, 'toString') && - (/^[\s(]*function[^(]*\(([^\s,)]+)/.exec(fn) || 0)[1]) || ''; - } - - /** - * Computes the arithmetic mean of a sample. - * - * @private - * @param {Array} sample The sample. - * @returns {Number} The mean. - */ - function getMean(sample) { - return reduce(sample, function(sum, x) { - return sum + x; - }) / sample.length || 0; - } - - /** - * Gets the source code of a function. - * - * @private - * @param {Function} fn The function. - * @param {String} altSource A string used when a function's source code is unretrievable. - * @returns {String} The function's source code. - */ - function getSource(fn, altSource) { - var result = altSource; - if (isStringable(fn)) { - result = String(fn); - } else if (support.decompilation) { - // escape the `{` for Firefox 1 - result = (/^[^{]+\{([\s\S]*)}\s*$/.exec(fn) || 0)[1]; - } - // trim string - result = (result || '').replace(/^\s+|\s+$/g, ''); - - // detect strings containing only the "use strict" directive - return /^(?:\/\*+[\w|\W]*?\*\/|\/\/.*?[\n\r\u2028\u2029]|\s)*(["'])use strict\1;?$/.test(result) - ? '' - : result; - } - - /** - * Checks if a value is an `arguments` object. - * - * @private - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the value is an `arguments` object, else `false`. - */ - function isArguments() { - // lazy define - isArguments = function(value) { - return toString.call(value) == '[object Arguments]'; - }; - if (noArgumentsClass) { - isArguments = function(value) { - return hasKey(value, 'callee') && - !(propertyIsEnumerable && propertyIsEnumerable.call(value, 'callee')); - }; - } - return isArguments(arguments[0]); - } - - /** - * Checks if an object is of the specified class. - * - * @private - * @param {Mixed} value The value to check. - * @param {String} name The name of the class. - * @returns {Boolean} Returns `true` if the value is of the specified class, else `false`. - */ - function isClassOf(value, name) { - return value != null && toString.call(value) == '[object ' + name + ']'; - } - - /** - * Host objects can return type values that are different from their actual - * data type. The objects we are concerned with usually return non-primitive - * types of object, function, or unknown. - * - * @private - * @param {Mixed} object The owner of the property. - * @param {String} property The property to check. - * @returns {Boolean} Returns `true` if the property value is a non-primitive, else `false`. - */ - function isHostType(object, property) { - var type = object != null ? typeof object[property] : 'number'; - return !/^(?:boolean|number|string|undefined)$/.test(type) && - (type == 'object' ? !!object[property] : true); - } - - /** - * Checks if a given `value` is an object created by the `Object` constructor - * assuming objects created by the `Object` constructor have no inherited - * enumerable properties and that there are no `Object.prototype` extensions. - * - * @private - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the `value` is a plain `Object` object, else `false`. - */ - function isPlainObject(value) { - // avoid non-objects and false positives for `arguments` objects in IE < 9 - var result = false; - if (!(value && typeof value == 'object') || isArguments(value)) { - return result; - } - // IE < 9 presents DOM nodes as `Object` objects except they have `toString` - // methods that are `typeof` "string" and still can coerce nodes to strings. - // Also check that the constructor is `Object` (i.e. `Object instanceof Object`) - var ctor = value.constructor; - if ((support.nodeClass || !(typeof value.toString != 'function' && typeof (value + '') == 'string')) && - (!isClassOf(ctor, 'Function') || ctor instanceof ctor)) { - // In most environments an object's own properties are iterated before - // its inherited properties. If the last iterated property is an object's - // own property then there are no inherited enumerable properties. - if (support.iteratesOwnFirst) { - forProps(value, function(subValue, subKey) { - result = subKey; - }); - return result === false || hasKey(value, result); - } - // IE < 9 iterates inherited properties before own properties. If the first - // iterated property is an object's own property then there are no inherited - // enumerable properties. - forProps(value, function(subValue, subKey) { - result = !hasKey(value, subKey); - return false; - }); - return result === false; - } - return result; - } - - /** - * Checks if a value can be safely coerced to a string. - * - * @private - * @param {Mixed} value The value to check. - * @returns {Boolean} Returns `true` if the value can be coerced, else `false`. - */ - function isStringable(value) { - return hasKey(value, 'toString') || isClassOf(value, 'String'); - } - - /** - * Wraps a function and passes `this` to the original function as the - * first argument. - * - * @private - * @param {Function} fn The function to be wrapped. - * @returns {Function} The new function. - */ - function methodize(fn) { - return function() { - var args = [this]; - args.push.apply(args, arguments); - return fn.apply(null, args); - }; - } - - /** - * A no-operation function. - * - * @private - */ - function noop() { - // no operation performed - } - - /** - * A wrapper around require() to suppress `module missing` errors. - * - * @private - * @param {String} id The module id. - * @returns {Mixed} The exported module or `null`. - */ - function req(id) { - try { - var result = freeExports && freeRequire(id); - } catch(e) { } - return result || null; - } - - /** - * Runs a snippet of JavaScript via script injection. - * - * @private - * @param {String} code The code to run. - */ - function runScript(code) { - var anchor = freeDefine ? define.amd : Benchmark, - script = doc.createElement('script'), - sibling = doc.getElementsByTagName('script')[0], - parent = sibling.parentNode, - prop = uid + 'runScript', - prefix = '(' + (freeDefine ? 'define.amd.' : 'Benchmark.') + prop + '||function(){})();'; - - // Firefox 2.0.0.2 cannot use script injection as intended because it executes - // asynchronously, but that's OK because script injection is only used to avoid - // the previously commented JaegerMonkey bug. - try { - // remove the inserted script *before* running the code to avoid differences - // in the expected script element count/order of the document. - script.appendChild(doc.createTextNode(prefix + code)); - anchor[prop] = function() { destroyElement(script); }; - } catch(e) { - parent = parent.cloneNode(false); - sibling = null; - script.text = code; - } - parent.insertBefore(script, sibling); - delete anchor[prop]; - } - - /** - * A helper function for setting options/event handlers. - * - * @private - * @param {Object} bench The benchmark instance. - * @param {Object} [options={}] Options object. - */ - function setOptions(bench, options) { - options = extend({}, bench.constructor.options, options); - bench.options = forOwn(options, function(value, key) { - if (value != null) { - // add event listeners - if (/^on[A-Z]/.test(key)) { - forEach(key.split(' '), function(key) { - bench.on(key.slice(2).toLowerCase(), value); - }); - } else if (!hasKey(bench, key)) { - bench[key] = deepClone(value); - } - } - }); - } - - /*--------------------------------------------------------------------------*/ - - /** - * Handles cycling/completing the deferred benchmark. - * - * @memberOf Benchmark.Deferred - */ - function resolve() { - var me = this, - clone = me.benchmark, - bench = clone._original; - - if (bench.aborted) { - // cycle() -> clone cycle/complete event -> compute()'s invoked bench.run() cycle/complete - me.teardown(); - clone.running = false; - cycle(me); - } - else if (++me.cycles < clone.count) { - // continue the test loop - if (support.timeout) { - // use setTimeout to avoid a call stack overflow if called recursively - setTimeout(function() { clone.compiled.call(me, timer); }, 0); - } else { - clone.compiled.call(me, timer); - } - } - else { - timer.stop(me); - me.teardown(); - delay(clone, function() { cycle(me); }); - } - } - - /*--------------------------------------------------------------------------*/ - - /** - * A deep clone utility. - * - * @static - * @memberOf Benchmark - * @param {Mixed} value The value to clone. - * @returns {Mixed} The cloned value. - */ - function deepClone(value) { - var accessor, - circular, - clone, - ctor, - descriptor, - extensible, - key, - length, - markerKey, - parent, - result, - source, - subIndex, - data = { 'value': value }, - index = 0, - marked = [], - queue = { 'length': 0 }, - unmarked = []; - - /** - * An easily detectable decorator for cloned values. - */ - function Marker(object) { - this.raw = object; - } - - /** - * The callback used by `forProps()`. - */ - function forPropsCallback(subValue, subKey) { - // exit early to avoid cloning the marker - if (subValue && subValue.constructor == Marker) { - return; - } - // add objects to the queue - if (subValue === Object(subValue)) { - queue[queue.length++] = { 'key': subKey, 'parent': clone, 'source': value }; - } - // assign non-objects - else { - try { - // will throw an error in strict mode if the property is read-only - clone[subKey] = subValue; - } catch(e) { } - } - } - - /** - * Gets an available marker key for the given object. - */ - function getMarkerKey(object) { - // avoid collisions with existing keys - var result = uid; - while (object[result] && object[result].constructor != Marker) { - result += 1; - } - return result; - } - - do { - key = data.key; - parent = data.parent; - source = data.source; - clone = value = source ? source[key] : data.value; - accessor = circular = descriptor = false; - - // create a basic clone to filter out functions, DOM elements, and - // other non `Object` objects - if (value === Object(value)) { - // use custom deep clone function if available - if (isClassOf(value.deepClone, 'Function')) { - clone = value.deepClone(); - } else { - ctor = value.constructor; - switch (toString.call(value)) { - case '[object Array]': - clone = new ctor(value.length); - break; - - case '[object Boolean]': - clone = new ctor(value == true); - break; - - case '[object Date]': - clone = new ctor(+value); - break; - - case '[object Object]': - isPlainObject(value) && (clone = {}); - break; - - case '[object Number]': - case '[object String]': - clone = new ctor(value); - break; - - case '[object RegExp]': - clone = ctor(value.source, - (value.global ? 'g' : '') + - (value.ignoreCase ? 'i' : '') + - (value.multiline ? 'm' : '')); - } - } - // continue clone if `value` doesn't have an accessor descriptor - // http://es5.github.com/#x8.10.1 - if (clone && clone != value && - !(descriptor = source && support.descriptors && getDescriptor(source, key), - accessor = descriptor && (descriptor.get || descriptor.set))) { - // use an existing clone (circular reference) - if ((extensible = isExtensible(value))) { - markerKey = getMarkerKey(value); - if (value[markerKey]) { - circular = clone = value[markerKey].raw; - } - } else { - // for frozen/sealed objects - for (subIndex = 0, length = unmarked.length; subIndex < length; subIndex++) { - data = unmarked[subIndex]; - if (data.object === value) { - circular = clone = data.clone; - break; - } - } - } - if (!circular) { - // mark object to allow quickly detecting circular references and tie it to its clone - if (extensible) { - value[markerKey] = new Marker(clone); - marked.push({ 'key': markerKey, 'object': value }); - } else { - // for frozen/sealed objects - unmarked.push({ 'clone': clone, 'object': value }); - } - // iterate over object properties - forProps(value, forPropsCallback, { 'which': 'all' }); - } - } - } - if (parent) { - // for custom property descriptors - if (accessor || (descriptor && !(descriptor.configurable && descriptor.enumerable && descriptor.writable))) { - if ('value' in descriptor) { - descriptor.value = clone; - } - setDescriptor(parent, key, descriptor); - } - // for default property descriptors - else { - parent[key] = clone; - } - } else { - result = clone; - } - } while ((data = queue[index++])); - - // remove markers - for (index = 0, length = marked.length; index < length; index++) { - data = marked[index]; - delete data.object[data.key]; - } - return result; - } - - /** - * An iteration utility for arrays and objects. - * Callbacks may terminate the loop by explicitly returning `false`. - * - * @static - * @memberOf Benchmark - * @param {Array|Object} object The object to iterate over. - * @param {Function} callback The function called per iteration. - * @param {Mixed} thisArg The `this` binding for the callback. - * @returns {Array|Object} Returns the object iterated over. - */ - function each(object, callback, thisArg) { - var result = object; - object = Object(object); - - var fn = callback, - index = -1, - length = object.length, - isSnapshot = !!(object.snapshotItem && (length = object.snapshotLength)), - isSplittable = (noCharByIndex || noCharByOwnIndex) && isClassOf(object, 'String'), - isConvertable = isSnapshot || isSplittable || 'item' in object, - origObject = object; - - // in Opera < 10.5 `hasKey(object, 'length')` returns `false` for NodeLists - if (length === length >>> 0) { - if (isConvertable) { - // the third argument of the callback is the original non-array object - callback = function(value, index) { - return fn.call(this, value, index, origObject); - }; - // in IE < 9 strings don't support accessing characters by index - if (isSplittable) { - object = object.split(''); - } else { - object = []; - while (++index < length) { - // in Safari 2 `index in object` is always `false` for NodeLists - object[index] = isSnapshot ? result.snapshotItem(index) : result[index]; - } - } - } - forEach(object, callback, thisArg); - } else { - forOwn(object, callback, thisArg); - } - return result; - } - - /** - * Copies enumerable properties from the source(s) object to the destination object. - * - * @static - * @memberOf Benchmark - * @param {Object} destination The destination object. - * @param {Object} [source={}] The source object. - * @returns {Object} The destination object. - */ - function extend(destination, source) { - // Chrome < 14 incorrectly sets `destination` to `undefined` when we `delete arguments[0]` - // http://code.google.com/p/v8/issues/detail?id=839 - var result = destination; - delete arguments[0]; - - forEach(arguments, function(source) { - forProps(source, function(value, key) { - result[key] = value; - }); - }); - return result; - } - - /** - * A generic `Array#filter` like method. - * - * @static - * @memberOf Benchmark - * @param {Array} array The array to iterate over. - * @param {Function|String} callback The function/alias called per iteration. - * @param {Mixed} thisArg The `this` binding for the callback. - * @returns {Array} A new array of values that passed callback filter. - * @example - * - * // get odd numbers - * Benchmark.filter([1, 2, 3, 4, 5], function(n) { - * return n % 2; - * }); // -> [1, 3, 5]; - * - * // get fastest benchmarks - * Benchmark.filter(benches, 'fastest'); - * - * // get slowest benchmarks - * Benchmark.filter(benches, 'slowest'); - * - * // get benchmarks that completed without erroring - * Benchmark.filter(benches, 'successful'); - */ - function filter(array, callback, thisArg) { - var result; - - if (callback == 'successful') { - // callback to exclude those that are errored, unrun, or have hz of Infinity - callback = function(bench) { return bench.cycles && isFinite(bench.hz); }; - } - else if (callback == 'fastest' || callback == 'slowest') { - // get successful, sort by period + margin of error, and filter fastest/slowest - result = filter(array, 'successful').sort(function(a, b) { - a = a.stats; b = b.stats; - return (a.mean + a.moe > b.mean + b.moe ? 1 : -1) * (callback == 'fastest' ? 1 : -1); - }); - result = filter(result, function(bench) { - return result[0].compare(bench) == 0; - }); - } - return result || reduce(array, function(result, value, index) { - return callback.call(thisArg, value, index, array) ? (result.push(value), result) : result; - }, []); - } - - /** - * A generic `Array#forEach` like method. - * Callbacks may terminate the loop by explicitly returning `false`. - * - * @static - * @memberOf Benchmark - * @param {Array} array The array to iterate over. - * @param {Function} callback The function called per iteration. - * @param {Mixed} thisArg The `this` binding for the callback. - * @returns {Array} Returns the array iterated over. - */ - function forEach(array, callback, thisArg) { - var index = -1, - length = (array = Object(array)).length >>> 0; - - if (thisArg !== undefined) { - callback = bind(callback, thisArg); - } - while (++index < length) { - if (index in array && - callback(array[index], index, array) === false) { - break; - } - } - return array; - } - - /** - * Iterates over an object's own properties, executing the `callback` for each. - * Callbacks may terminate the loop by explicitly returning `false`. - * - * @static - * @memberOf Benchmark - * @param {Object} object The object to iterate over. - * @param {Function} callback The function executed per own property. - * @param {Mixed} thisArg The `this` binding for the callback. - * @returns {Object} Returns the object iterated over. - */ - function forOwn(object, callback, thisArg) { - return forProps(object, callback, { 'bind': thisArg, 'which': 'own' }); - } - - /** - * Converts a number to a more readable comma-separated string representation. - * - * @static - * @memberOf Benchmark - * @param {Number} number The number to convert. - * @returns {String} The more readable string representation. - */ - function formatNumber(number) { - number = String(number).split('.'); - return number[0].replace(/(?=(?:\d{3})+$)(?!\b)/g, ',') + - (number[1] ? '.' + number[1] : ''); - } - - /** - * Checks if an object has the specified key as a direct property. - * - * @static - * @memberOf Benchmark - * @param {Object} object The object to check. - * @param {String} key The key to check for. - * @returns {Boolean} Returns `true` if key is a direct property, else `false`. - */ - function hasKey() { - // lazy define for worst case fallback (not as accurate) - hasKey = function(object, key) { - var parent = object != null && (object.constructor || Object).prototype; - return !!parent && key in Object(object) && !(key in parent && object[key] === parent[key]); - }; - // for modern browsers - if (isClassOf(hasOwnProperty, 'Function')) { - hasKey = function(object, key) { - return object != null && hasOwnProperty.call(object, key); - }; - } - // for Safari 2 - else if ({}.__proto__ == Object.prototype) { - hasKey = function(object, key) { - var result = false; - if (object != null) { - object = Object(object); - object.__proto__ = [object.__proto__, object.__proto__ = null, result = key in object][0]; - } - return result; - }; - } - return hasKey.apply(this, arguments); - } - - /** - * A generic `Array#indexOf` like method. - * - * @static - * @memberOf Benchmark - * @param {Array} array The array to iterate over. - * @param {Mixed} value The value to search for. - * @param {Number} [fromIndex=0] The index to start searching from. - * @returns {Number} The index of the matched value or `-1`. - */ - function indexOf(array, value, fromIndex) { - var index = toInteger(fromIndex), - length = (array = Object(array)).length >>> 0; - - index = (index < 0 ? max(0, length + index) : index) - 1; - while (++index < length) { - if (index in array && value === array[index]) { - return index; - } - } - return -1; - } - - /** - * Modify a string by replacing named tokens with matching object property values. - * - * @static - * @memberOf Benchmark - * @param {String} string The string to modify. - * @param {Object} object The template object. - * @returns {String} The modified string. - */ - function interpolate(string, object) { - forOwn(object, function(value, key) { - // escape regexp special characters in `key` - string = string.replace(RegExp('#\\{' + key.replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1') + '\\}', 'g'), value); - }); - return string; - } - - /** - * Invokes a method on all items in an array. - * - * @static - * @memberOf Benchmark - * @param {Array} benches Array of benchmarks to iterate over. - * @param {String|Object} name The name of the method to invoke OR options object. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the method with. - * @returns {Array} A new array of values returned from each method invoked. - * @example - * - * // invoke `reset` on all benchmarks - * Benchmark.invoke(benches, 'reset'); - * - * // invoke `emit` with arguments - * Benchmark.invoke(benches, 'emit', 'complete', listener); - * - * // invoke `run(true)`, treat benchmarks as a queue, and register invoke callbacks - * Benchmark.invoke(benches, { - * - * // invoke the `run` method - * 'name': 'run', - * - * // pass a single argument - * 'args': true, - * - * // treat as queue, removing benchmarks from front of `benches` until empty - * 'queued': true, - * - * // called before any benchmarks have been invoked. - * 'onStart': onStart, - * - * // called between invoking benchmarks - * 'onCycle': onCycle, - * - * // called after all benchmarks have been invoked. - * 'onComplete': onComplete - * }); - */ - function invoke(benches, name) { - var args, - bench, - queued, - index = -1, - eventProps = { 'currentTarget': benches }, - options = { 'onStart': noop, 'onCycle': noop, 'onComplete': noop }, - result = map(benches, function(bench) { return bench; }); - - /** - * Invokes the method of the current object and if synchronous, fetches the next. - */ - function execute() { - var listeners, - async = isAsync(bench); - - if (async) { - // use `getNext` as the first listener - bench.on('complete', getNext); - listeners = bench.events.complete; - listeners.splice(0, 0, listeners.pop()); - } - // execute method - result[index] = isClassOf(bench && bench[name], 'Function') ? bench[name].apply(bench, args) : undefined; - // if synchronous return true until finished - return !async && getNext(); - } - - /** - * Fetches the next bench or executes `onComplete` callback. - */ - function getNext(event) { - var cycleEvent, - last = bench, - async = isAsync(last); - - if (async) { - last.off('complete', getNext); - last.emit('complete'); - } - // emit "cycle" event - eventProps.type = 'cycle'; - eventProps.target = last; - cycleEvent = Event(eventProps); - options.onCycle.call(benches, cycleEvent); - - // choose next benchmark if not exiting early - if (!cycleEvent.aborted && raiseIndex() !== false) { - bench = queued ? benches[0] : result[index]; - if (isAsync(bench)) { - delay(bench, execute); - } - else if (async) { - // resume execution if previously asynchronous but now synchronous - while (execute()) { } - } - else { - // continue synchronous execution - return true; - } - } else { - // emit "complete" event - eventProps.type = 'complete'; - options.onComplete.call(benches, Event(eventProps)); - } - // When used as a listener `event.aborted = true` will cancel the rest of - // the "complete" listeners because they were already called above and when - // used as part of `getNext` the `return false` will exit the execution while-loop. - if (event) { - event.aborted = true; - } else { - return false; - } - } - - /** - * Checks if invoking `Benchmark#run` with asynchronous cycles. - */ - function isAsync(object) { - // avoid using `instanceof` here because of IE memory leak issues with host objects - var async = args[0] && args[0].async; - return Object(object).constructor == Benchmark && name == 'run' && - ((async == null ? object.options.async : async) && support.timeout || object.defer); - } - - /** - * Raises `index` to the next defined index or returns `false`. - */ - function raiseIndex() { - var length = result.length; - if (queued) { - // if queued remove the previous bench and subsequent skipped non-entries - do { - ++index > 0 && shift.call(benches); - } while ((length = benches.length) && !('0' in benches)); - } - else { - while (++index < length && !(index in result)) { } - } - // if we reached the last index then return `false` - return (queued ? length : index < length) ? index : (index = false); - } - - // juggle arguments - if (isClassOf(name, 'String')) { - // 2 arguments (array, name) - args = slice.call(arguments, 2); - } else { - // 2 arguments (array, options) - options = extend(options, name); - name = options.name; - args = isClassOf(args = 'args' in options ? options.args : [], 'Array') ? args : [args]; - queued = options.queued; - } - - // start iterating over the array - if (raiseIndex() !== false) { - // emit "start" event - bench = result[index]; - eventProps.type = 'start'; - eventProps.target = bench; - options.onStart.call(benches, Event(eventProps)); - - // end early if the suite was aborted in an "onStart" listener - if (benches.aborted && benches.constructor == Suite && name == 'run') { - // emit "cycle" event - eventProps.type = 'cycle'; - options.onCycle.call(benches, Event(eventProps)); - // emit "complete" event - eventProps.type = 'complete'; - options.onComplete.call(benches, Event(eventProps)); - } - // else start - else { - if (isAsync(bench)) { - delay(bench, execute); - } else { - while (execute()) { } - } - } - } - return result; - } - - /** - * Creates a string of joined array values or object key-value pairs. - * - * @static - * @memberOf Benchmark - * @param {Array|Object} object The object to operate on. - * @param {String} [separator1=','] The separator used between key-value pairs. - * @param {String} [separator2=': '] The separator used between keys and values. - * @returns {String} The joined result. - */ - function join(object, separator1, separator2) { - var result = [], - length = (object = Object(object)).length, - arrayLike = length === length >>> 0; - - separator2 || (separator2 = ': '); - each(object, function(value, key) { - result.push(arrayLike ? value : key + separator2 + value); - }); - return result.join(separator1 || ','); - } - - /** - * A generic `Array#map` like method. - * - * @static - * @memberOf Benchmark - * @param {Array} array The array to iterate over. - * @param {Function} callback The function called per iteration. - * @param {Mixed} thisArg The `this` binding for the callback. - * @returns {Array} A new array of values returned by the callback. - */ - function map(array, callback, thisArg) { - return reduce(array, function(result, value, index) { - result[index] = callback.call(thisArg, value, index, array); - return result; - }, Array(Object(array).length >>> 0)); - } - - /** - * Retrieves the value of a specified property from all items in an array. - * - * @static - * @memberOf Benchmark - * @param {Array} array The array to iterate over. - * @param {String} property The property to pluck. - * @returns {Array} A new array of property values. - */ - function pluck(array, property) { - return map(array, function(object) { - return object == null ? undefined : object[property]; - }); - } - - /** - * A generic `Array#reduce` like method. - * - * @static - * @memberOf Benchmark - * @param {Array} array The array to iterate over. - * @param {Function} callback The function called per iteration. - * @param {Mixed} accumulator Initial value of the accumulator. - * @returns {Mixed} The accumulator. - */ - function reduce(array, callback, accumulator) { - var noaccum = arguments.length < 3; - forEach(array, function(value, index) { - accumulator = noaccum ? (noaccum = false, value) : callback(accumulator, value, index, array); - }); - return accumulator; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Aborts all benchmarks in the suite. - * - * @name abort - * @memberOf Benchmark.Suite - * @returns {Object} The suite instance. - */ - function abortSuite() { - var event, - me = this, - resetting = calledBy.resetSuite; - - if (me.running) { - event = Event('abort'); - me.emit(event); - if (!event.cancelled || resetting) { - // avoid infinite recursion - calledBy.abortSuite = true; - me.reset(); - delete calledBy.abortSuite; - - if (!resetting) { - me.aborted = true; - invoke(me, 'abort'); - } - } - } - return me; - } - - /** - * Adds a test to the benchmark suite. - * - * @memberOf Benchmark.Suite - * @param {String} name A name to identify the benchmark. - * @param {Function|String} fn The test to benchmark. - * @param {Object} [options={}] Options object. - * @returns {Object} The benchmark instance. - * @example - * - * // basic usage - * suite.add(fn); - * - * // or using a name first - * suite.add('foo', fn); - * - * // or with options - * suite.add('foo', fn, { - * 'onCycle': onCycle, - * 'onComplete': onComplete - * }); - * - * // or name and options - * suite.add('foo', { - * 'fn': fn, - * 'onCycle': onCycle, - * 'onComplete': onComplete - * }); - * - * // or options only - * suite.add({ - * 'name': 'foo', - * 'fn': fn, - * 'onCycle': onCycle, - * 'onComplete': onComplete - * }); - */ - function add(name, fn, options) { - var me = this, - bench = Benchmark(name, fn, options), - event = Event({ 'type': 'add', 'target': bench }); - - if (me.emit(event), !event.cancelled) { - me.push(bench); - } - return me; - } - - /** - * Creates a new suite with cloned benchmarks. - * - * @name clone - * @memberOf Benchmark.Suite - * @param {Object} options Options object to overwrite cloned options. - * @returns {Object} The new suite instance. - */ - function cloneSuite(options) { - var me = this, - result = new me.constructor(extend({}, me.options, options)); - - // copy own properties - forOwn(me, function(value, key) { - if (!hasKey(result, key)) { - result[key] = value && isClassOf(value.clone, 'Function') - ? value.clone() - : deepClone(value); - } - }); - return result; - } - - /** - * An `Array#filter` like method. - * - * @name filter - * @memberOf Benchmark.Suite - * @param {Function|String} callback The function/alias called per iteration. - * @returns {Object} A new suite of benchmarks that passed callback filter. - */ - function filterSuite(callback) { - var me = this, - result = new me.constructor; - - result.push.apply(result, filter(me, callback)); - return result; - } - - /** - * Resets all benchmarks in the suite. - * - * @name reset - * @memberOf Benchmark.Suite - * @returns {Object} The suite instance. - */ - function resetSuite() { - var event, - me = this, - aborting = calledBy.abortSuite; - - if (me.running && !aborting) { - // no worries, `resetSuite()` is called within `abortSuite()` - calledBy.resetSuite = true; - me.abort(); - delete calledBy.resetSuite; - } - // reset if the state has changed - else if ((me.aborted || me.running) && - (me.emit(event = Event('reset')), !event.cancelled)) { - me.running = false; - if (!aborting) { - invoke(me, 'reset'); - } - } - return me; - } - - /** - * Runs the suite. - * - * @name run - * @memberOf Benchmark.Suite - * @param {Object} [options={}] Options object. - * @returns {Object} The suite instance. - * @example - * - * // basic usage - * suite.run(); - * - * // or with options - * suite.run({ 'async': true, 'queued': true }); - */ - function runSuite(options) { - var me = this; - - me.reset(); - me.running = true; - options || (options = {}); - - invoke(me, { - 'name': 'run', - 'args': options, - 'queued': options.queued, - 'onStart': function(event) { - me.emit(event); - }, - 'onCycle': function(event) { - var bench = event.target; - if (bench.error) { - me.emit({ 'type': 'error', 'target': bench }); - } - me.emit(event); - event.aborted = me.aborted; - }, - 'onComplete': function(event) { - me.running = false; - me.emit(event); - } - }); - return me; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Executes all registered listeners of the specified event type. - * - * @memberOf Benchmark, Benchmark.Suite - * @param {String|Object} type The event type or object. - * @returns {Mixed} Returns the return value of the last listener executed. - */ - function emit(type) { - var listeners, - me = this, - event = Event(type), - events = me.events, - args = (arguments[0] = event, arguments); - - event.currentTarget || (event.currentTarget = me); - event.target || (event.target = me); - delete event.result; - - if (events && (listeners = hasKey(events, event.type) && events[event.type])) { - forEach(listeners.slice(), function(listener) { - if ((event.result = listener.apply(me, args)) === false) { - event.cancelled = true; - } - return !event.aborted; - }); - } - return event.result; - } - - /** - * Returns an array of event listeners for a given type that can be manipulated - * to add or remove listeners. - * - * @memberOf Benchmark, Benchmark.Suite - * @param {String} type The event type. - * @returns {Array} The listeners array. - */ - function listeners(type) { - var me = this, - events = me.events || (me.events = {}); - - return hasKey(events, type) ? events[type] : (events[type] = []); - } - - /** - * Unregisters a listener for the specified event type(s), - * or unregisters all listeners for the specified event type(s), - * or unregisters all listeners for all event types. - * - * @memberOf Benchmark, Benchmark.Suite - * @param {String} [type] The event type. - * @param {Function} [listener] The function to unregister. - * @returns {Object} The benchmark instance. - * @example - * - * // unregister a listener for an event type - * bench.off('cycle', listener); - * - * // unregister a listener for multiple event types - * bench.off('start cycle', listener); - * - * // unregister all listeners for an event type - * bench.off('cycle'); - * - * // unregister all listeners for multiple event types - * bench.off('start cycle complete'); - * - * // unregister all listeners for all event types - * bench.off(); - */ - function off(type, listener) { - var me = this, - events = me.events; - - events && each(type ? type.split(' ') : events, function(listeners, type) { - var index; - if (typeof listeners == 'string') { - type = listeners; - listeners = hasKey(events, type) && events[type]; - } - if (listeners) { - if (listener) { - index = indexOf(listeners, listener); - if (index > -1) { - listeners.splice(index, 1); - } - } else { - listeners.length = 0; - } - } - }); - return me; - } - - /** - * Registers a listener for the specified event type(s). - * - * @memberOf Benchmark, Benchmark.Suite - * @param {String} type The event type. - * @param {Function} listener The function to register. - * @returns {Object} The benchmark instance. - * @example - * - * // register a listener for an event type - * bench.on('cycle', listener); - * - * // register a listener for multiple event types - * bench.on('start cycle', listener); - */ - function on(type, listener) { - var me = this, - events = me.events || (me.events = {}); - - forEach(type.split(' '), function(type) { - (hasKey(events, type) - ? events[type] - : (events[type] = []) - ).push(listener); - }); - return me; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Aborts the benchmark without recording times. - * - * @memberOf Benchmark - * @returns {Object} The benchmark instance. - */ - function abort() { - var event, - me = this, - resetting = calledBy.reset; - - if (me.running) { - event = Event('abort'); - me.emit(event); - if (!event.cancelled || resetting) { - // avoid infinite recursion - calledBy.abort = true; - me.reset(); - delete calledBy.abort; - - if (support.timeout) { - clearTimeout(me._timerId); - delete me._timerId; - } - if (!resetting) { - me.aborted = true; - me.running = false; - } - } - } - return me; - } - - /** - * Creates a new benchmark using the same test and options. - * - * @memberOf Benchmark - * @param {Object} options Options object to overwrite cloned options. - * @returns {Object} The new benchmark instance. - * @example - * - * var bizarro = bench.clone({ - * 'name': 'doppelganger' - * }); - */ - function clone(options) { - var me = this, - result = new me.constructor(extend({}, me, options)); - - // correct the `options` object - result.options = extend({}, me.options, options); - - // copy own custom properties - forOwn(me, function(value, key) { - if (!hasKey(result, key)) { - result[key] = deepClone(value); - } - }); - return result; - } - - /** - * Determines if a benchmark is faster than another. - * - * @memberOf Benchmark - * @param {Object} other The benchmark to compare. - * @returns {Number} Returns `-1` if slower, `1` if faster, and `0` if indeterminate. - */ - function compare(other) { - var critical, - zStat, - me = this, - sample1 = me.stats.sample, - sample2 = other.stats.sample, - size1 = sample1.length, - size2 = sample2.length, - maxSize = max(size1, size2), - minSize = min(size1, size2), - u1 = getU(sample1, sample2), - u2 = getU(sample2, sample1), - u = min(u1, u2); - - function getScore(xA, sampleB) { - return reduce(sampleB, function(total, xB) { - return total + (xB > xA ? 0 : xB < xA ? 1 : 0.5); - }, 0); - } - - function getU(sampleA, sampleB) { - return reduce(sampleA, function(total, xA) { - return total + getScore(xA, sampleB); - }, 0); - } - - function getZ(u) { - return (u - ((size1 * size2) / 2)) / sqrt((size1 * size2 * (size1 + size2 + 1)) / 12); - } - - // exit early if comparing the same benchmark - if (me == other) { - return 0; - } - // reject the null hyphothesis the two samples come from the - // same population (i.e. have the same median) if... - if (size1 + size2 > 30) { - // ...the z-stat is greater than 1.96 or less than -1.96 - // http://www.statisticslectures.com/topics/mannwhitneyu/ - zStat = getZ(u); - return abs(zStat) > 1.96 ? (zStat > 0 ? -1 : 1) : 0; - } - // ...the U value is less than or equal the critical U value - // http://www.geoib.com/mann-whitney-u-test.html - critical = maxSize < 5 || minSize < 3 ? 0 : uTable[maxSize][minSize - 3]; - return u <= critical ? (u == u1 ? 1 : -1) : 0; - } - - /** - * Reset properties and abort if running. - * - * @memberOf Benchmark - * @returns {Object} The benchmark instance. - */ - function reset() { - var data, - event, - me = this, - index = 0, - changes = { 'length': 0 }, - queue = { 'length': 0 }; - - if (me.running && !calledBy.abort) { - // no worries, `reset()` is called within `abort()` - calledBy.reset = true; - me.abort(); - delete calledBy.reset; - } - else { - // a non-recursive solution to check if properties have changed - // http://www.jslab.dk/articles/non.recursive.preorder.traversal.part4 - data = { 'destination': me, 'source': extend({}, me.constructor.prototype, me.options) }; - do { - forOwn(data.source, function(value, key) { - var changed, - destination = data.destination, - currValue = destination[key]; - - if (value && typeof value == 'object') { - if (isClassOf(value, 'Array')) { - // check if an array value has changed to a non-array value - if (!isClassOf(currValue, 'Array')) { - changed = currValue = []; - } - // or has changed its length - if (currValue.length != value.length) { - changed = currValue = currValue.slice(0, value.length); - currValue.length = value.length; - } - } - // check if an object has changed to a non-object value - else if (!currValue || typeof currValue != 'object') { - changed = currValue = {}; - } - // register a changed object - if (changed) { - changes[changes.length++] = { 'destination': destination, 'key': key, 'value': currValue }; - } - queue[queue.length++] = { 'destination': currValue, 'source': value }; - } - // register a changed primitive - else if (value !== currValue && !(value == null || isClassOf(value, 'Function'))) { - changes[changes.length++] = { 'destination': destination, 'key': key, 'value': value }; - } - }); - } - while ((data = queue[index++])); - - // if changed emit the `reset` event and if it isn't cancelled reset the benchmark - if (changes.length && (me.emit(event = Event('reset')), !event.cancelled)) { - forEach(changes, function(data) { - data.destination[data.key] = data.value; - }); - } - } - return me; - } - - /** - * Displays relevant benchmark information when coerced to a string. - * - * @name toString - * @memberOf Benchmark - * @returns {String} A string representation of the benchmark instance. - */ - function toStringBench() { - var me = this, - error = me.error, - hz = me.hz, - id = me.id, - stats = me.stats, - size = stats.sample.length, - pm = support.java ? '+/-' : '\xb1', - result = me.name || (isNaN(id) ? id : '<Test #' + id + '>'); - - if (error) { - result += ': ' + join(error); - } else { - result += ' x ' + formatNumber(hz.toFixed(hz < 100 ? 2 : 0)) + ' ops/sec ' + pm + - stats.rme.toFixed(2) + '% (' + size + ' run' + (size == 1 ? '' : 's') + ' sampled)'; - } - return result; - } - - /*--------------------------------------------------------------------------*/ - - /** - * Clocks the time taken to execute a test per cycle (secs). - * - * @private - * @param {Object} bench The benchmark instance. - * @returns {Number} The time taken. - */ - function clock() { - var applet, - options = Benchmark.options, - template = { 'begin': 's$=new n$', 'end': 'r$=(new n$-s$)/1e3', 'uid': uid }, - timers = [{ 'ns': timer.ns, 'res': max(0.0015, getRes('ms')), 'unit': 'ms' }]; - - // lazy define for hi-res timers - clock = function(clone) { - var deferred; - if (clone instanceof Deferred) { - deferred = clone; - clone = deferred.benchmark; - } - - var bench = clone._original, - fn = bench.fn, - fnArg = deferred ? getFirstArgument(fn) || 'deferred' : '', - stringable = isStringable(fn); - - var source = { - 'setup': getSource(bench.setup, preprocess('m$.setup()')), - 'fn': getSource(fn, preprocess('m$.fn(' + fnArg + ')')), - 'fnArg': fnArg, - 'teardown': getSource(bench.teardown, preprocess('m$.teardown()')) - }; - - var count = bench.count = clone.count, - decompilable = support.decompilation || stringable, - id = bench.id, - isEmpty = !(source.fn || stringable), - name = bench.name || (typeof id == 'number' ? '<Test #' + id + '>' : id), - ns = timer.ns, - result = 0; - - // init `minTime` if needed - clone.minTime = bench.minTime || (bench.minTime = bench.options.minTime = options.minTime); - - // repair nanosecond timer - // (some Chrome builds erase the `ns` variable after millions of executions) - if (applet) { - try { - ns.nanoTime(); - } catch(e) { - // use non-element to avoid issues with libs that augment them - ns = timer.ns = new applet.Packages.nano; - } - } - - // Compile in setup/teardown functions and the test loop. - // Create a new compiled test, instead of using the cached `bench.compiled`, - // to avoid potential engine optimizations enabled over the life of the test. - var compiled = bench.compiled = createFunction(preprocess('t$'), interpolate( - preprocess(deferred - ? 'var d$=this,#{fnArg}=d$,m$=d$.benchmark._original,f$=m$.fn,su$=m$.setup,td$=m$.teardown;' + - // when `deferred.cycles` is `0` then... - 'if(!d$.cycles){' + - // set `deferred.fn` - 'd$.fn=function(){var #{fnArg}=d$;if(typeof f$=="function"){try{#{fn}\n}catch(e$){f$(d$)}}else{#{fn}\n}};' + - // set `deferred.teardown` - 'd$.teardown=function(){d$.cycles=0;if(typeof td$=="function"){try{#{teardown}\n}catch(e$){td$()}}else{#{teardown}\n}};' + - // execute the benchmark's `setup` - 'if(typeof su$=="function"){try{#{setup}\n}catch(e$){su$()}}else{#{setup}\n};' + - // start timer - 't$.start(d$);' + - // execute `deferred.fn` and return a dummy object - '}d$.fn();return{}' - - : 'var r$,s$,m$=this,f$=m$.fn,i$=m$.count,n$=t$.ns;#{setup}\n#{begin};' + - 'while(i$--){#{fn}\n}#{end};#{teardown}\nreturn{elapsed:r$,uid:"#{uid}"}'), - source - )); - - try { - if (isEmpty) { - // Firefox may remove dead code from Function#toString results - // http://bugzil.la/536085 - throw new Error('The test "' + name + '" is empty. This may be the result of dead code removal.'); - } - else if (!deferred) { - // pretest to determine if compiled code is exits early, usually by a - // rogue `return` statement, by checking for a return object with the uid - bench.count = 1; - compiled = (compiled.call(bench, timer) || {}).uid == uid && compiled; - bench.count = count; - } - } catch(e) { - compiled = null; - clone.error = e || new Error(String(e)); - bench.count = count; - } - // fallback when a test exits early or errors during pretest - if (decompilable && !compiled && !deferred && !isEmpty) { - compiled = createFunction(preprocess('t$'), interpolate( - preprocess( - (clone.error && !stringable - ? 'var r$,s$,m$=this,f$=m$.fn,i$=m$.count' - : 'function f$(){#{fn}\n}var r$,s$,m$=this,i$=m$.count' - ) + - ',n$=t$.ns;#{setup}\n#{begin};m$.f$=f$;while(i$--){m$.f$()}#{end};' + - 'delete m$.f$;#{teardown}\nreturn{elapsed:r$}' - ), - source - )); - - try { - // pretest one more time to check for errors - bench.count = 1; - compiled.call(bench, timer); - bench.compiled = compiled; - bench.count = count; - delete clone.error; - } - catch(e) { - bench.count = count; - if (clone.error) { - compiled = null; - } else { - bench.compiled = compiled; - clone.error = e || new Error(String(e)); - } - } - } - // assign `compiled` to `clone` before calling in case a deferred benchmark - // immediately calls `deferred.resolve()` - clone.compiled = compiled; - // if no errors run the full test loop - if (!clone.error) { - result = compiled.call(deferred || bench, timer).elapsed; - } - return result; - }; - - /*------------------------------------------------------------------------*/ - - /** - * Gets the current timer's minimum resolution (secs). - */ - function getRes(unit) { - var measured, - begin, - count = 30, - divisor = 1e3, - ns = timer.ns, - sample = []; - - // get average smallest measurable time - while (count--) { - if (unit == 'us') { - divisor = 1e6; - if (ns.stop) { - ns.start(); - while (!(measured = ns.microseconds())) { } - } else if (ns[perfName]) { - divisor = 1e3; - measured = Function('n', 'var r,s=n.' + perfName + '();while(!(r=n.' + perfName + '()-s)){};return r')(ns); - } else { - begin = ns(); - while (!(measured = ns() - begin)) { } - } - } - else if (unit == 'ns') { - divisor = 1e9; - if (ns.nanoTime) { - begin = ns.nanoTime(); - while (!(measured = ns.nanoTime() - begin)) { } - } else { - begin = (begin = ns())[0] + (begin[1] / divisor); - while (!(measured = ((measured = ns())[0] + (measured[1] / divisor)) - begin)) { } - divisor = 1; - } - } - else { - begin = new ns; - while (!(measured = new ns - begin)) { } - } - // check for broken timers (nanoTime may have issues) - // http://alivebutsleepy.srnet.cz/unreliable-system-nanotime/ - if (measured > 0) { - sample.push(measured); - } else { - sample.push(Infinity); - break; - } - } - // convert to seconds - return getMean(sample) / divisor; - } - - /** - * Replaces all occurrences of `$` with a unique number and - * template tokens with content. - */ - function preprocess(code) { - return interpolate(code, template).replace(/\$/g, /\d+/.exec(uid)); - } - - /*------------------------------------------------------------------------*/ - - // detect nanosecond support from a Java applet - each(doc && doc.applets || [], function(element) { - return !(timer.ns = applet = 'nanoTime' in element && element); - }); - - // check type in case Safari returns an object instead of a number - try { - if (typeof timer.ns.nanoTime() == 'number') { - timers.push({ 'ns': timer.ns, 'res': getRes('ns'), 'unit': 'ns' }); - } - } catch(e) { } - - // detect Chrome's microsecond timer: - // enable benchmarking via the --enable-benchmarking command - // line switch in at least Chrome 7 to use chrome.Interval - try { - if ((timer.ns = new (window.chrome || window.chromium).Interval)) { - timers.push({ 'ns': timer.ns, 'res': getRes('us'), 'unit': 'us' }); - } - } catch(e) { } - - // detect `performance.now` microsecond resolution timer - if ((timer.ns = perfName && perfObject)) { - timers.push({ 'ns': timer.ns, 'res': getRes('us'), 'unit': 'us' }); - } - - // detect Node's nanosecond resolution timer available in Node >= 0.8 - if (processObject && typeof (timer.ns = processObject.hrtime) == 'function') { - timers.push({ 'ns': timer.ns, 'res': getRes('ns'), 'unit': 'ns' }); - } - - // detect Wade Simmons' Node microtime module - if (microtimeObject && typeof (timer.ns = microtimeObject.now) == 'function') { - timers.push({ 'ns': timer.ns, 'res': getRes('us'), 'unit': 'us' }); - } - - // pick timer with highest resolution - timer = reduce(timers, function(timer, other) { - return other.res < timer.res ? other : timer; - }); - - // remove unused applet - if (timer.unit != 'ns' && applet) { - applet = destroyElement(applet); - } - // error if there are no working timers - if (timer.res == Infinity) { - throw new Error('Benchmark.js was unable to find a working timer.'); - } - // use API of chosen timer - if (timer.unit == 'ns') { - if (timer.ns.nanoTime) { - extend(template, { - 'begin': 's$=n$.nanoTime()', - 'end': 'r$=(n$.nanoTime()-s$)/1e9' - }); - } else { - extend(template, { - 'begin': 's$=n$()', - 'end': 'r$=n$(s$);r$=r$[0]+(r$[1]/1e9)' - }); - } - } - else if (timer.unit == 'us') { - if (timer.ns.stop) { - extend(template, { - 'begin': 's$=n$.start()', - 'end': 'r$=n$.microseconds()/1e6' - }); - } else if (perfName) { - extend(template, { - 'begin': 's$=n$.' + perfName + '()', - 'end': 'r$=(n$.' + perfName + '()-s$)/1e3' - }); - } else { - extend(template, { - 'begin': 's$=n$()', - 'end': 'r$=(n$()-s$)/1e6' - }); - } - } - - // define `timer` methods - timer.start = createFunction(preprocess('o$'), - preprocess('var n$=this.ns,#{begin};o$.elapsed=0;o$.timeStamp=s$')); - - timer.stop = createFunction(preprocess('o$'), - preprocess('var n$=this.ns,s$=o$.timeStamp,#{end};o$.elapsed=r$')); - - // resolve time span required to achieve a percent uncertainty of at most 1% - // http://spiff.rit.edu/classes/phys273/uncert/uncert.html - options.minTime || (options.minTime = max(timer.res / 2 / 0.01, 0.05)); - return clock.apply(null, arguments); - } - - /*--------------------------------------------------------------------------*/ - - /** - * Computes stats on benchmark results. - * - * @private - * @param {Object} bench The benchmark instance. - * @param {Object} options The options object. - */ - function compute(bench, options) { - options || (options = {}); - - var async = options.async, - elapsed = 0, - initCount = bench.initCount, - minSamples = bench.minSamples, - queue = [], - sample = bench.stats.sample; - - /** - * Adds a clone to the queue. - */ - function enqueue() { - queue.push(bench.clone({ - '_original': bench, - 'events': { - 'abort': [update], - 'cycle': [update], - 'error': [update], - 'start': [update] - } - })); - } - - /** - * Updates the clone/original benchmarks to keep their data in sync. - */ - function update(event) { - var clone = this, - type = event.type; - - if (bench.running) { - if (type == 'start') { - // Note: `clone.minTime` prop is inited in `clock()` - clone.count = bench.initCount; - } - else { - if (type == 'error') { - bench.error = clone.error; - } - if (type == 'abort') { - bench.abort(); - bench.emit('cycle'); - } else { - event.currentTarget = event.target = bench; - bench.emit(event); - } - } - } else if (bench.aborted) { - // clear abort listeners to avoid triggering bench's abort/cycle again - clone.events.abort.length = 0; - clone.abort(); - } - } - - /** - * Determines if more clones should be queued or if cycling should stop. - */ - function evaluate(event) { - var critical, - df, - mean, - moe, - rme, - sd, - sem, - variance, - clone = event.target, - done = bench.aborted, - now = +new Date, - size = sample.push(clone.times.period), - maxedOut = size >= minSamples && (elapsed += now - clone.times.timeStamp) / 1e3 > bench.maxTime, - times = bench.times, - varOf = function(sum, x) { return sum + pow(x - mean, 2); }; - - // exit early for aborted or unclockable tests - if (done || clone.hz == Infinity) { - maxedOut = !(size = sample.length = queue.length = 0); - } - - if (!done) { - // sample mean (estimate of the population mean) - mean = getMean(sample); - // sample variance (estimate of the population variance) - variance = reduce(sample, varOf, 0) / (size - 1) || 0; - // sample standard deviation (estimate of the population standard deviation) - sd = sqrt(variance); - // standard error of the mean (a.k.a. the standard deviation of the sampling distribution of the sample mean) - sem = sd / sqrt(size); - // degrees of freedom - df = size - 1; - // critical value - critical = tTable[Math.round(df) || 1] || tTable.infinity; - // margin of error - moe = sem * critical; - // relative margin of error - rme = (moe / mean) * 100 || 0; - - extend(bench.stats, { - 'deviation': sd, - 'mean': mean, - 'moe': moe, - 'rme': rme, - 'sem': sem, - 'variance': variance - }); - - // Abort the cycle loop when the minimum sample size has been collected - // and the elapsed time exceeds the maximum time allowed per benchmark. - // We don't count cycle delays toward the max time because delays may be - // increased by browsers that clamp timeouts for inactive tabs. - // https://developer.mozilla.org/en/window.setTimeout#Inactive_tabs - if (maxedOut) { - // reset the `initCount` in case the benchmark is rerun - bench.initCount = initCount; - bench.running = false; - done = true; - times.elapsed = (now - times.timeStamp) / 1e3; - } - if (bench.hz != Infinity) { - bench.hz = 1 / mean; - times.cycle = mean * bench.count; - times.period = mean; - } - } - // if time permits, increase sample size to reduce the margin of error - if (queue.length < 2 && !maxedOut) { - enqueue(); - } - // abort the invoke cycle when done - event.aborted = done; - } - - // init queue and begin - enqueue(); - invoke(queue, { - 'name': 'run', - 'args': { 'async': async }, - 'queued': true, - 'onCycle': evaluate, - 'onComplete': function() { bench.emit('complete'); } - }); - } - - /*--------------------------------------------------------------------------*/ - - /** - * Cycles a benchmark until a run `count` can be established. - * - * @private - * @param {Object} clone The cloned benchmark instance. - * @param {Object} options The options object. - */ - function cycle(clone, options) { - options || (options = {}); - - var deferred; - if (clone instanceof Deferred) { - deferred = clone; - clone = clone.benchmark; - } - - var clocked, - cycles, - divisor, - event, - minTime, - period, - async = options.async, - bench = clone._original, - count = clone.count, - times = clone.times; - - // continue, if not aborted between cycles - if (clone.running) { - // `minTime` is set to `Benchmark.options.minTime` in `clock()` - cycles = ++clone.cycles; - clocked = deferred ? deferred.elapsed : clock(clone); - minTime = clone.minTime; - - if (cycles > bench.cycles) { - bench.cycles = cycles; - } - if (clone.error) { - event = Event('error'); - event.message = clone.error; - clone.emit(event); - if (!event.cancelled) { - clone.abort(); - } - } - } - - // continue, if not errored - if (clone.running) { - // time taken to complete last test cycle - bench.times.cycle = times.cycle = clocked; - // seconds per operation - period = bench.times.period = times.period = clocked / count; - // ops per second - bench.hz = clone.hz = 1 / period; - // avoid working our way up to this next time - bench.initCount = clone.initCount = count; - // do we need to do another cycle? - clone.running = clocked < minTime; - - if (clone.running) { - // tests may clock at `0` when `initCount` is a small number, - // to avoid that we set its count to something a bit higher - if (!clocked && (divisor = divisors[clone.cycles]) != null) { - count = floor(4e6 / divisor); - } - // calculate how many more iterations it will take to achive the `minTime` - if (count <= clone.count) { - count += Math.ceil((minTime - clocked) / period); - } - clone.running = count != Infinity; - } - } - // should we exit early? - event = Event('cycle'); - clone.emit(event); - if (event.aborted) { - clone.abort(); - } - // figure out what to do next - if (clone.running) { - // start a new cycle - clone.count = count; - if (deferred) { - clone.compiled.call(deferred, timer); - } else if (async) { - delay(clone, function() { cycle(clone, options); }); - } else { - cycle(clone); - } - } - else { - // fix TraceMonkey bug associated with clock fallbacks - // http://bugzil.la/509069 - if (support.browser) { - runScript(uid + '=1;delete ' + uid); - } - // done - clone.emit('complete'); - } - } - - /*--------------------------------------------------------------------------*/ - - /** - * Runs the benchmark. - * - * @memberOf Benchmark - * @param {Object} [options={}] Options object. - * @returns {Object} The benchmark instance. - * @example - * - * // basic usage - * bench.run(); - * - * // or with options - * bench.run({ 'async': true }); - */ - function run(options) { - var me = this, - event = Event('start'); - - // set `running` to `false` so `reset()` won't call `abort()` - me.running = false; - me.reset(); - me.running = true; - - me.count = me.initCount; - me.times.timeStamp = +new Date; - me.emit(event); - - if (!event.cancelled) { - options = { 'async': ((options = options && options.async) == null ? me.async : options) && support.timeout }; - - // for clones created within `compute()` - if (me._original) { - if (me.defer) { - Deferred(me); - } else { - cycle(me, options); - } - } - // for original benchmarks - else { - compute(me, options); - } - } - return me; - } - - /*--------------------------------------------------------------------------*/ - - // Firefox 1 erroneously defines variable and argument names of functions on - // the function itself as non-configurable properties with `undefined` values. - // The bugginess continues as the `Benchmark` constructor has an argument - // named `options` and Firefox 1 will not assign a value to `Benchmark.options`, - // making it non-writable in the process, unless it is the first property - // assigned by for-in loop of `extend()`. - extend(Benchmark, { - - /** - * The default options copied by benchmark instances. - * - * @static - * @memberOf Benchmark - * @type Object - */ - 'options': { - - /** - * A flag to indicate that benchmark cycles will execute asynchronously - * by default. - * - * @memberOf Benchmark.options - * @type Boolean - */ - 'async': false, - - /** - * A flag to indicate that the benchmark clock is deferred. - * - * @memberOf Benchmark.options - * @type Boolean - */ - 'defer': false, - - /** - * The delay between test cycles (secs). - * @memberOf Benchmark.options - * @type Number - */ - 'delay': 0.005, - - /** - * Displayed by Benchmark#toString when a `name` is not available - * (auto-generated if absent). - * - * @memberOf Benchmark.options - * @type String - */ - 'id': undefined, - - /** - * The default number of times to execute a test on a benchmark's first cycle. - * - * @memberOf Benchmark.options - * @type Number - */ - 'initCount': 1, - - /** - * The maximum time a benchmark is allowed to run before finishing (secs). - * - * Note: Cycle delays aren't counted toward the maximum time. - * - * @memberOf Benchmark.options - * @type Number - */ - 'maxTime': 5, - - /** - * The minimum sample size required to perform statistical analysis. - * - * @memberOf Benchmark.options - * @type Number - */ - 'minSamples': 5, - - /** - * The time needed to reduce the percent uncertainty of measurement to 1% (secs). - * - * @memberOf Benchmark.options - * @type Number - */ - 'minTime': 0, - - /** - * The name of the benchmark. - * - * @memberOf Benchmark.options - * @type String - */ - 'name': undefined, - - /** - * An event listener called when the benchmark is aborted. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onAbort': undefined, - - /** - * An event listener called when the benchmark completes running. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onComplete': undefined, - - /** - * An event listener called after each run cycle. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onCycle': undefined, - - /** - * An event listener called when a test errors. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onError': undefined, - - /** - * An event listener called when the benchmark is reset. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onReset': undefined, - - /** - * An event listener called when the benchmark starts running. - * - * @memberOf Benchmark.options - * @type Function - */ - 'onStart': undefined - }, - - /** - * Platform object with properties describing things like browser name, - * version, and operating system. - * - * @static - * @memberOf Benchmark - * @type Object - */ - 'platform': req('platform') || window.platform || { - - /** - * The platform description. - * - * @memberOf Benchmark.platform - * @type String - */ - 'description': window.navigator && navigator.userAgent || null, - - /** - * The name of the browser layout engine. - * - * @memberOf Benchmark.platform - * @type String|Null - */ - 'layout': null, - - /** - * The name of the product hosting the browser. - * - * @memberOf Benchmark.platform - * @type String|Null - */ - 'product': null, - - /** - * The name of the browser/environment. - * - * @memberOf Benchmark.platform - * @type String|Null - */ - 'name': null, - - /** - * The name of the product's manufacturer. - * - * @memberOf Benchmark.platform - * @type String|Null - */ - 'manufacturer': null, - - /** - * The name of the operating system. - * - * @memberOf Benchmark.platform - * @type String|Null - */ - 'os': null, - - /** - * The alpha/beta release indicator. - * - * @memberOf Benchmark.platform - * @type String|Null - */ - 'prerelease': null, - - /** - * The browser/environment version. - * - * @memberOf Benchmark.platform - * @type String|Null - */ - 'version': null, - - /** - * Return platform description when the platform object is coerced to a string. - * - * @memberOf Benchmark.platform - * @type Function - * @returns {String} The platform description. - */ - 'toString': function() { - return this.description || ''; - } - }, - - /** - * The semantic version number. - * - * @static - * @memberOf Benchmark - * @type String - */ - 'version': '1.0.0', - - // an object of environment/feature detection flags - 'support': support, - - // clone objects - 'deepClone': deepClone, - - // iteration utility - 'each': each, - - // augment objects - 'extend': extend, - - // generic Array#filter - 'filter': filter, - - // generic Array#forEach - 'forEach': forEach, - - // generic own property iteration utility - 'forOwn': forOwn, - - // converts a number to a comma-separated string - 'formatNumber': formatNumber, - - // generic Object#hasOwnProperty - // (trigger hasKey's lazy define before assigning it to Benchmark) - 'hasKey': (hasKey(Benchmark, ''), hasKey), - - // generic Array#indexOf - 'indexOf': indexOf, - - // template utility - 'interpolate': interpolate, - - // invokes a method on each item in an array - 'invoke': invoke, - - // generic Array#join for arrays and objects - 'join': join, - - // generic Array#map - 'map': map, - - // retrieves a property value from each item in an array - 'pluck': pluck, - - // generic Array#reduce - 'reduce': reduce - }); - - /*--------------------------------------------------------------------------*/ - - extend(Benchmark.prototype, { - - /** - * The number of times a test was executed. - * - * @memberOf Benchmark - * @type Number - */ - 'count': 0, - - /** - * The number of cycles performed while benchmarking. - * - * @memberOf Benchmark - * @type Number - */ - 'cycles': 0, - - /** - * The number of executions per second. - * - * @memberOf Benchmark - * @type Number - */ - 'hz': 0, - - /** - * The compiled test function. - * - * @memberOf Benchmark - * @type Function|String - */ - 'compiled': undefined, - - /** - * The error object if the test failed. - * - * @memberOf Benchmark - * @type Object - */ - 'error': undefined, - - /** - * The test to benchmark. - * - * @memberOf Benchmark - * @type Function|String - */ - 'fn': undefined, - - /** - * A flag to indicate if the benchmark is aborted. - * - * @memberOf Benchmark - * @type Boolean - */ - 'aborted': false, - - /** - * A flag to indicate if the benchmark is running. - * - * @memberOf Benchmark - * @type Boolean - */ - 'running': false, - - /** - * Compiled into the test and executed immediately **before** the test loop. - * - * @memberOf Benchmark - * @type Function|String - * @example - * - * // basic usage - * var bench = Benchmark({ - * 'setup': function() { - * var c = this.count, - * element = document.getElementById('container'); - * while (c--) { - * element.appendChild(document.createElement('div')); - * } - * }, - * 'fn': function() { - * element.removeChild(element.lastChild); - * } - * }); - * - * // compiles to something like: - * var c = this.count, - * element = document.getElementById('container'); - * while (c--) { - * element.appendChild(document.createElement('div')); - * } - * var start = new Date; - * while (count--) { - * element.removeChild(element.lastChild); - * } - * var end = new Date - start; - * - * // or using strings - * var bench = Benchmark({ - * 'setup': '\ - * var a = 0;\n\ - * (function() {\n\ - * (function() {\n\ - * (function() {', - * 'fn': 'a += 1;', - * 'teardown': '\ - * }())\n\ - * }())\n\ - * }())' - * }); - * - * // compiles to something like: - * var a = 0; - * (function() { - * (function() { - * (function() { - * var start = new Date; - * while (count--) { - * a += 1; - * } - * var end = new Date - start; - * }()) - * }()) - * }()) - */ - 'setup': noop, - - /** - * Compiled into the test and executed immediately **after** the test loop. - * - * @memberOf Benchmark - * @type Function|String - */ - 'teardown': noop, - - /** - * An object of stats including mean, margin or error, and standard deviation. - * - * @memberOf Benchmark - * @type Object - */ - 'stats': { - - /** - * The margin of error. - * - * @memberOf Benchmark#stats - * @type Number - */ - 'moe': 0, - - /** - * The relative margin of error (expressed as a percentage of the mean). - * - * @memberOf Benchmark#stats - * @type Number - */ - 'rme': 0, - - /** - * The standard error of the mean. - * - * @memberOf Benchmark#stats - * @type Number - */ - 'sem': 0, - - /** - * The sample standard deviation. - * - * @memberOf Benchmark#stats - * @type Number - */ - 'deviation': 0, - - /** - * The sample arithmetic mean. - * - * @memberOf Benchmark#stats - * @type Number - */ - 'mean': 0, - - /** - * The array of sampled periods. - * - * @memberOf Benchmark#stats - * @type Array - */ - 'sample': [], - - /** - * The sample variance. - * - * @memberOf Benchmark#stats - * @type Number - */ - 'variance': 0 - }, - - /** - * An object of timing data including cycle, elapsed, period, start, and stop. - * - * @memberOf Benchmark - * @type Object - */ - 'times': { - - /** - * The time taken to complete the last cycle (secs). - * - * @memberOf Benchmark#times - * @type Number - */ - 'cycle': 0, - - /** - * The time taken to complete the benchmark (secs). - * - * @memberOf Benchmark#times - * @type Number - */ - 'elapsed': 0, - - /** - * The time taken to execute the test once (secs). - * - * @memberOf Benchmark#times - * @type Number - */ - 'period': 0, - - /** - * A timestamp of when the benchmark started (ms). - * - * @memberOf Benchmark#times - * @type Number - */ - 'timeStamp': 0 - }, - - // aborts benchmark (does not record times) - 'abort': abort, - - // creates a new benchmark using the same test and options - 'clone': clone, - - // compares benchmark's hertz with another - 'compare': compare, - - // executes listeners - 'emit': emit, - - // get listeners - 'listeners': listeners, - - // unregister listeners - 'off': off, - - // register listeners - 'on': on, - - // reset benchmark properties - 'reset': reset, - - // runs the benchmark - 'run': run, - - // pretty print benchmark info - 'toString': toStringBench - }); - - /*--------------------------------------------------------------------------*/ - - extend(Deferred.prototype, { - - /** - * The deferred benchmark instance. - * - * @memberOf Benchmark.Deferred - * @type Object - */ - 'benchmark': null, - - /** - * The number of deferred cycles performed while benchmarking. - * - * @memberOf Benchmark.Deferred - * @type Number - */ - 'cycles': 0, - - /** - * The time taken to complete the deferred benchmark (secs). - * - * @memberOf Benchmark.Deferred - * @type Number - */ - 'elapsed': 0, - - /** - * A timestamp of when the deferred benchmark started (ms). - * - * @memberOf Benchmark.Deferred - * @type Number - */ - 'timeStamp': 0, - - // cycles/completes the deferred benchmark - 'resolve': resolve - }); - - /*--------------------------------------------------------------------------*/ - - extend(Event.prototype, { - - /** - * A flag to indicate if the emitters listener iteration is aborted. - * - * @memberOf Benchmark.Event - * @type Boolean - */ - 'aborted': false, - - /** - * A flag to indicate if the default action is cancelled. - * - * @memberOf Benchmark.Event - * @type Boolean - */ - 'cancelled': false, - - /** - * The object whose listeners are currently being processed. - * - * @memberOf Benchmark.Event - * @type Object - */ - 'currentTarget': undefined, - - /** - * The return value of the last executed listener. - * - * @memberOf Benchmark.Event - * @type Mixed - */ - 'result': undefined, - - /** - * The object to which the event was originally emitted. - * - * @memberOf Benchmark.Event - * @type Object - */ - 'target': undefined, - - /** - * A timestamp of when the event was created (ms). - * - * @memberOf Benchmark.Event - * @type Number - */ - 'timeStamp': 0, - - /** - * The event type. - * - * @memberOf Benchmark.Event - * @type String - */ - 'type': '' - }); - - /*--------------------------------------------------------------------------*/ - - /** - * The default options copied by suite instances. - * - * @static - * @memberOf Benchmark.Suite - * @type Object - */ - Suite.options = { - - /** - * The name of the suite. - * - * @memberOf Benchmark.Suite.options - * @type String - */ - 'name': undefined - }; - - /*--------------------------------------------------------------------------*/ - - extend(Suite.prototype, { - - /** - * The number of benchmarks in the suite. - * - * @memberOf Benchmark.Suite - * @type Number - */ - 'length': 0, - - /** - * A flag to indicate if the suite is aborted. - * - * @memberOf Benchmark.Suite - * @type Boolean - */ - 'aborted': false, - - /** - * A flag to indicate if the suite is running. - * - * @memberOf Benchmark.Suite - * @type Boolean - */ - 'running': false, - - /** - * An `Array#forEach` like method. - * Callbacks may terminate the loop by explicitly returning `false`. - * - * @memberOf Benchmark.Suite - * @param {Function} callback The function called per iteration. - * @returns {Object} The suite iterated over. - */ - 'forEach': methodize(forEach), - - /** - * An `Array#indexOf` like method. - * - * @memberOf Benchmark.Suite - * @param {Mixed} value The value to search for. - * @returns {Number} The index of the matched value or `-1`. - */ - 'indexOf': methodize(indexOf), - - /** - * Invokes a method on all benchmarks in the suite. - * - * @memberOf Benchmark.Suite - * @param {String|Object} name The name of the method to invoke OR options object. - * @param {Mixed} [arg1, arg2, ...] Arguments to invoke the method with. - * @returns {Array} A new array of values returned from each method invoked. - */ - 'invoke': methodize(invoke), - - /** - * Converts the suite of benchmarks to a string. - * - * @memberOf Benchmark.Suite - * @param {String} [separator=','] A string to separate each element of the array. - * @returns {String} The string. - */ - 'join': [].join, - - /** - * An `Array#map` like method. - * - * @memberOf Benchmark.Suite - * @param {Function} callback The function called per iteration. - * @returns {Array} A new array of values returned by the callback. - */ - 'map': methodize(map), - - /** - * Retrieves the value of a specified property from all benchmarks in the suite. - * - * @memberOf Benchmark.Suite - * @param {String} property The property to pluck. - * @returns {Array} A new array of property values. - */ - 'pluck': methodize(pluck), - - /** - * Removes the last benchmark from the suite and returns it. - * - * @memberOf Benchmark.Suite - * @returns {Mixed} The removed benchmark. - */ - 'pop': [].pop, - - /** - * Appends benchmarks to the suite. - * - * @memberOf Benchmark.Suite - * @returns {Number} The suite's new length. - */ - 'push': [].push, - - /** - * Sorts the benchmarks of the suite. - * - * @memberOf Benchmark.Suite - * @param {Function} [compareFn=null] A function that defines the sort order. - * @returns {Object} The sorted suite. - */ - 'sort': [].sort, - - /** - * An `Array#reduce` like method. - * - * @memberOf Benchmark.Suite - * @param {Function} callback The function called per iteration. - * @param {Mixed} accumulator Initial value of the accumulator. - * @returns {Mixed} The accumulator. - */ - 'reduce': methodize(reduce), - - // aborts all benchmarks in the suite - 'abort': abortSuite, - - // adds a benchmark to the suite - 'add': add, - - // creates a new suite with cloned benchmarks - 'clone': cloneSuite, - - // executes listeners of a specified type - 'emit': emit, - - // creates a new suite of filtered benchmarks - 'filter': filterSuite, - - // get listeners - 'listeners': listeners, - - // unregister listeners - 'off': off, - - // register listeners - 'on': on, - - // resets all benchmarks in the suite - 'reset': resetSuite, - - // runs all benchmarks in the suite - 'run': runSuite, - - // array methods - 'concat': concat, - - 'reverse': reverse, - - 'shift': shift, - - 'slice': slice, - - 'splice': splice, - - 'unshift': unshift - }); - - /*--------------------------------------------------------------------------*/ - - // expose Deferred, Event and Suite - extend(Benchmark, { - 'Deferred': Deferred, - 'Event': Event, - 'Suite': Suite - }); - - // expose Benchmark - // some AMD build optimizers, like r.js, check for specific condition patterns like the following: - if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) { - // define as an anonymous module so, through path mapping, it can be aliased - define(function() { - return Benchmark; - }); - } - // check for `exports` after `define` in case a build optimizer adds an `exports` object - else if (freeExports) { - // in Node.js or RingoJS v0.8.0+ - if (typeof module == 'object' && module && module.exports == freeExports) { - (module.exports = Benchmark).Benchmark = Benchmark; - } - // in Narwhal or RingoJS v0.7.0- - else { - freeExports.Benchmark = Benchmark; - } - } - // in a browser or Rhino - else { - // use square bracket notation so Closure Compiler won't munge `Benchmark` - // http://code.google.com/closure/compiler/docs/api-tutorial3.html#export - window['Benchmark'] = Benchmark; - } - - // trigger clock's lazy define early to avoid a security error - if (support.air) { - clock({ '_original': { 'fn': noop, 'count': 1, 'options': {} } }); - } -}(this)); |