• Classes
• Modules
• Everything

 /**
 * The YUI module contains the components required for building the YUI
 * seed file. This includes the script loading mechanism, a simple queue,
 * and the core utilities for the library.
 * @module yui
 * @submodule yui-base
 */
 
 /**
 * A simple FIFO queue. Items are added to the Queue with add(1..n items) and
 * removed using next().
 *
 * @class Queue
 * @constructor
 * @param {MIXED} item* 0..n items to seed the queue.
 */
 function Queue() {
 this._init();
 this.add.apply(this, arguments);
 }
 
 Queue.prototype = {
 /**
 * Initialize the queue
 *
 * @method _init
 * @protected
 */
 _init: function() {
 /**
 * The collection of enqueued items
 *
 * @property _q
 * @type Array
 * @protected
 */
 this._q = [];
 },
 
 /**
 * Get the next item in the queue. FIFO support
 *
 * @method next
 * @return {MIXED} the next item in the queue.
 */
 next: function() {
 return this._q.shift();
 },
 
 /**
 * Get the last in the queue. LIFO support.
 *
 * @method last
 * @return {MIXED} the last item in the queue.
 */
 last: function() {
 return this._q.pop();
 },
 
 /**
 * Add 0..n items to the end of the queue.
 *
 * @method add
 * @param {MIXED} item* 0..n items.
 * @return {object} this queue.
 */
 add: function() {
 this._q.push.apply(this._q, arguments);
 
 return this;
 },
 
 /**
 * Returns the current number of queued items.
 *
 * @method size
 * @return {Number} The size.
 */
 size: function() {
 return this._q.length;
 }
 };
 
 Y.Queue = Queue;
 
 YUI.Env._loaderQueue = YUI.Env._loaderQueue || new Queue();