/*##############################################################################
#    Copyright (C) 2011 HPCC Systems.
#
#    All rights reserved. This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
############################################################################## */

    function Stack()
    {
        // Create an empty array of cards.
        this.cards = new Array();  
        this.push  = StackPush; 
        this.pop   = StackPop;
        this.getData = StackGetData;
    }
 
    function StackPush(data)
    {
        this.cards.push(data);
    }
 
    function StackPop(data)
    {
        return this.cards.pop();            
    }
 
    function StackGetData()
    {
        return this.cards;
    }