CactusStackStorage.h

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/******************************************************************************
*       SOFA, Simulation Open-Framework Architecture, version 1.0 beta 3      *
*                (c) 2006-2008 MGH, INRIA, USTL, UJF, CNRS                    *
*                                                                             *
* This library is free software; you can redistribute it and/or modify it     *
* under the terms of the GNU Lesser General Public License as published by    *
* the Free Software Foundation; either version 2.1 of the License, or (at     *
* your option) any later version.                                             *
*                                                                             *
* This library 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 Lesser General Public License *
* for more details.                                                           *
*                                                                             *
* You should have received a copy of the GNU Lesser General Public License    *
* along with this library; if not, write to the Free Software Foundation,     *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.          *
*******************************************************************************
*                               SOFA :: Modules                               *
*                                                                             *
* Authors: The SOFA Team and external contributors (see Authors.txt)          *
*                                                                             *
* Contact information: contact@sofa-framework.org                             *
******************************************************************************/
#ifndef SOFA_SIMULATION_TREE_CACTUSSTACKSTORAGE_H
#define SOFA_SIMULATION_TREE_CACTUSSTACKSTORAGE_H

#include <sofa/simulation/common/LocalStorage.h>
#include <stack>


namespace sofa
{

namespace simulation
{


  class CactusStackStorage : public simulation::LocalStorage
{
protected:
    CactusStackStorage* up; 
    CactusStackStorage* down; 
    std::stack<void*> stack;
public:
    CactusStackStorage()
    : up(NULL), down(NULL)
    {
    }
    void setParent(CactusStackStorage* parent)
    {
        up = parent;
    }
    void setChildren(CactusStackStorage* children)
    {
        down = children;
    }
    CactusStackStorage* getParent()
    {
        return up;
    }
    CactusStackStorage* getChildren()
    {
        return down;
    }
    
    void push(void* data);
    void* pop();
    void* top() const;
    bool empty() const;
};

} // namespace simulation

} // namespace sofa

#endif