1 /**
  2  * The MIT License (MIT)
  3  *
  4  * Copyright (c) 2016 DeNA Co., Ltd.
  5  *
  6  * Permission is hereby granted, free of charge, to any person obtaining a copy
  7  * of this software and associated documentation files (the "Software"), to deal
  8  * in the Software without restriction, including without limitation the rights
  9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 10  * copies of the Software, and to permit persons to whom the Software is
 11  * furnished to do so, subject to the following conditions:
 12  *
 13  * The above copyright notice and this permission notice shall be included in
 14  * all copies or substantial portions of the Software.
 15  *
 16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 22  * SOFTWARE.
 23  */
 24 
 25 /// <reference path="base.js"/>
 26 
 27 /**
 28  * A class that generates unique IDs.
 29  * @constructor
 30  */
 31 createjs.UID = function() {
 32 };
 33 
 34 /**
 35  * @type {number}
 36  * @private
 37  */
 38 createjs.UID.nextID_ = 0;
 39 
 40 /**
 41  * Returns a unique ID.
 42  * @return {number}
 43  * @static
 44  */
 45 createjs.UID.get = function() {
 46   return createjs.UID.nextID_++;
 47 };
 48