BxDataObjectStack.h

// ##################################################################
// Binx
// $Id: BxDataObjectStack_8h-source.html,v 1.1.1.1 2006/04/19 14:19:02 edikt2 Exp $
//
// Class for keeping a list of data object pointers on the stack
// ##################################################################
/*

//  edikt::BinX
//  www.edikt.org
//  support@edikt.org

// Copyright (c) 2004 The University of Edinburgh.

*/

#ifndef __BxDataObjectStack__
#define __BxDataObjectStack__

#include "BxDataObject.h"

/*
 * It implements a simple stack data structure which is used to store
 * pointers of BxDataObject instances.  The pointers are maintained
 * in an array which is originally allocated with 10 elements, and can
 * be automatically enlarged if required.  The pointers maintained
 * in the stack are not deleted in any case, so the user is responsible
 * for memory management.
 * <BR><B>since:</B> version 1.1
 */
class DECLSPEC PointerStack
{
public:
    PointerStack();
    ~PointerStack();

    void push(BxDataObject*);
    BxDataObject* pop();
    BxDataObject* top(int index=0) const; //get
    int count () const;

private:
    void expand();

private:
    BxDataObject** pPointers_;
    BxDataObject* pCurrentPointer_;
    int nPointers_;
    int position_;
};

#endif

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