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/* <copyright>
 This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
 No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
 (c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
 </copyright> */
/* <notice>
 Code from node-uuid: https://github.com/broofa/node-uuid/raw/master/uuid.js<br/>
 MIT license https://github.com/broofa/node-uuid/blob/master/LICENSE.md<br/>
 </notice> */

/**
	@module montage/core/uuid
    @requires montage/core/core
*/
/**
    @class module:montage/core/uuid.Uuid
    @extends module:montage/core/core.Montage
 */
var Montage = require("montage").Montage,
    CHARS = '0123456789ABCDEF'.split(''),
    FORMAT = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.split(''),

    Uuid = exports.Uuid = Montage.create(Montage,/** @lends module:montage/core/uuid.Uuid# */ {

/**
    Returns a univerally unique ID (UUID).
    @function
    @param {Property} argument
    @returns {String} The UUID.
    */
        generate: {
            enumerable: false,
            value: function generate(argument) {
                var c = CHARS, id = FORMAT, r;

                id[0] = c[(r = Math.random() * 0x100000000) & 0xf];
                id[1] = c[(r >>>= 4) & 0xf];
                id[2] = c[(r >>>= 4) & 0xf];
                id[3] = c[(r >>>= 4) & 0xf];
                id[4] = c[(r >>>= 4) & 0xf];
                id[5] = c[(r >>>= 4) & 0xf];
                id[6] = c[(r >>>= 4) & 0xf];
                id[7] = c[(r >>>= 4) & 0xf];

                id[9] = c[(r = Math.random() * 0x100000000) & 0xf];
                id[10] = c[(r >>>= 4) & 0xf];
                id[11] = c[(r >>>= 4) & 0xf];
                id[12] = c[(r >>>= 4) & 0xf];
                id[15] = c[(r >>>= 4) & 0xf];
                id[16] = c[(r >>>= 4) & 0xf];
                id[17] = c[(r >>>= 4) & 0xf];

                id[19] = c[(r = Math.random() * 0x100000000) & 0x3 | 0x8];
                id[20] = c[(r >>>= 4) & 0xf];
                id[21] = c[(r >>>= 4) & 0xf];
                id[22] = c[(r >>>= 4) & 0xf];
                id[24] = c[(r >>>= 4) & 0xf];
                id[25] = c[(r >>>= 4) & 0xf];
                id[26] = c[(r >>>= 4) & 0xf];
                id[27] = c[(r >>>= 4) & 0xf];

                id[28] = c[(r = Math.random() * 0x100000000) & 0xf];
                id[29] = c[(r >>>= 4) & 0xf];
                id[30] = c[(r >>>= 4) & 0xf];
                id[31] = c[(r >>>= 4) & 0xf];
                id[32] = c[(r >>>= 4) & 0xf];
                id[33] = c[(r >>>= 4) & 0xf];
                id[34] = c[(r >>>= 4) & 0xf];
                id[35] = c[(r >>>= 4) & 0xf];

                return id.join('');
            }
        }
    });