sprint/container/lazy_vector.h

Go to the documentation of this file.

/******************************************************************************
*   sprint::lazy_vector
*
*   Copyright (C) 2005-2011  Paolo Medici <www.pmx.it>
*
*  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
*
*******************************************************************************/

#ifndef _SPRINT_LAZYVECTOR_H
#define _SPRINT_LAZYVECTOR_H

#include <vector>

namespace sprint {

template<typename _Tp >
class lazy_vector {
      std::vector<char> m_buf;
public:
                lazy_vector(long size = suggestedSize ) : m_buf(sizeof(_Tp) * size)
                        { 
                        }
                        
        ~lazy_vector() {
                }
                
                void resize(long new_size)
                {
            m_buf.resize(new_size * sizeof(_Tp) );
        }

        void reserve(long reserve)
        {
           m_buf.reserve(reserve * sizeof(_Tp) );
        }
                
                inline int size() const
                    {  return m_buf.size() / sizeof(_Tp);       }  
                
        inline int capacity() const
                    {  return m_buf.capacity() / sizeof(_Tp);   }  
                
        inline _Tp & operator[](int i)     
            {  return (reinterpret_cast<_Tp*>(&(*m_buf[0]))[i];             }
                
                inline const _Tp & operator[](int i) const  
            {  return (reinterpret_cast<const _Tp*>(&(*m_buf[0]))[i];             }             

};

}

#endif