XnStack.h

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/****************************************************************************
*                                                                           *
*  OpenNI 1.x Alpha                                                         *
*  Copyright (C) 2011 PrimeSense Ltd.                                       *
*                                                                           *
*  This file is part of OpenNI.                                             *
*                                                                           *
*  OpenNI 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 3 of the License, or     *
*  (at your option) any later version.                                      *
*                                                                           *
*  OpenNI 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.                      *
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*  You should have received a copy of the GNU Lesser General Public License *
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*                                                                           *
****************************************************************************/
#ifndef _XN_STACK_H
#define _XN_STACK_H

//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include "XnList.h"

//---------------------------------------------------------------------------
// Types
//---------------------------------------------------------------------------
class XnStack
{
public:
    XnStack() {}
    ~XnStack() {}

    XnStatus Push(XnValue const& value)
    {
        return m_List.AddFirst(value);
    }

    XnStatus Pop(XnValue& value)
    {
        if (IsEmpty())
        {
            return XN_STATUS_IS_EMPTY;
        }

        value = *(m_List.begin());
        return m_List.Remove(m_List.begin());
    }

    XnValue const& Top() const
    {
        return *(m_List.begin());
    }

    XnValue& Top()
    {
        return *(m_List.begin());
    }

    XnBool IsEmpty() const
    {
        return m_List.IsEmpty();
    }

    XnUInt32 Size() const
    {
        return m_List.Size();
    }

private:
    XnList m_List;
};

#define XN_DECLARE_STACK_WITH_TRANSLATOR_DECL(decl, Type, ClassName, Translator)        \
    /* Note: we use queue declaration, as this is the same interface. */                \
    XN_DECLARE_QUEUE_WITH_TRANSLATOR_DECL(decl, Type, ClassName, Translator, XnStack)

#define XN_DECLARE_STACK_WITH_TRANSLATOR(Type, ClassName, Translator)   \
    XN_DECLARE_STACK_WITH_TRANSLATOR_DECL(, ClassName, Translator)

#define XN_DECLARE_STACK_DECL(decl, Type, ClassName)                                                    \
    XN_DECLARE_DEFAULT_VALUE_TRANSLATOR_DECL(decl, Type, XN_DEFAULT_TRANSLATOR_NAME(ClassName))         \
    XN_DECLARE_STACK_WITH_TRANSLATOR_DECL(decl, Type, ClassName, XN_DEFAULT_TRANSLATOR_NAME(ClassName))

#define XN_DECLARE_STACK(Type, ClassName)           \
    XN_DECLARE_STACK_DECL(, Type, ClassName)


#endif // _XN_STACK_H