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October 22, 2021 14:11
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| // OO - Class - Copyright TJ Holowaychuk <tj@vision-media.ca> (MIT Licensed) | |
| // Based on http://ejohn.org/blog/simple-javascript-inheritance/ | |
| // which is based on implementations by Prototype / base2 | |
| ;(function(){ | |
| var global = this, initialize = true | |
| var referencesSuper = /xyz/.test(function(){ xyz }) ? /\b__super__\b/ : /.*/ | |
| /** | |
| * Shortcut for Class.extend() | |
| * | |
| * @param {hash} props | |
| * @return {function} | |
| * @api public | |
| */ | |
| Class = function(props){ | |
| if (this == global) | |
| return Class.extend(props) | |
| } | |
| // --- Version | |
| Class.version = '1.0.0' | |
| /** | |
| * Create a new class. | |
| * | |
| * User = Class({ | |
| * init: function(name){ | |
| * this.name = name | |
| * } | |
| * }) | |
| * | |
| * Classes may be subclassed using the .extend() method, and | |
| * the associated superclass method via this.__super__(). | |
| * | |
| * Admin = User.extend({ | |
| * init: function(name, password) { | |
| * this.__super__(name) | |
| * // or this.__super__.apply(this, arguments) | |
| * this.password = password | |
| * } | |
| * }) | |
| * | |
| * @param {hash} props | |
| * @return {function} | |
| * @api public | |
| */ | |
| Class.extend = function(props) { | |
| var __super__ = this.prototype | |
| initialize = false | |
| var prototype = new this | |
| initialize = true | |
| for (var name in props) | |
| prototype[name] = | |
| typeof props[name] == 'function' && | |
| typeof __super__[name] == 'function' && | |
| referencesSuper.test(props[name]) ? | |
| (function(name, fn){ | |
| return function() { | |
| this.__super__ = __super__[name] | |
| return fn.apply(this, arguments) | |
| } | |
| })(name, props[name]) | |
| : props[name] | |
| function Class() { | |
| if (initialize && this.init) | |
| this.init.apply(this, arguments) | |
| } | |
| Class.prototype = prototype | |
| Class.constructor = Class | |
| Class.extend = arguments.callee | |
| return Class | |
| } | |
| })() |
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