bitmask.hpp

"More for C++" is a class library that provides some features that are usually common for object ori

//
//  This file is part of the "More for C++" library
//
//  Copyright (c) 1999-2003 by Thorsten Goertz ([e-mail])
//
//  The "More for C++" library is free software; you can redistribute it and/or
//  modify it under the terms of the license that comes with this package.
//
//  Read "license.txt" for more details.
//
//  THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
//  WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES
//  OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

////////////////////////////////////////////////////////////////////////////////

#ifndef BITMASK_HPP
#define BITMASK_HPP

////////////////////////////////////////////////////////////////////////////////

#include <cstddef>

////////////////////////////////////////////////////////////////////////////////

namespace more
{
  namespace core
  {
    class BitMask
    {
      public:
        typedef unsigned char byte;
        static size_t calcSize( size_t nNoOfBits );

        BitMask( byte* pBytesForBits = 0, size_t nNoOfBytes = 0, size_t nNoOfBits = 0 );
        void initialize( byte* pBytesForBits, size_t nNoOfBytes, size_t nNoOfBits );
        size_t getNoOfBits( ) const;
        void clear( );
        void setBit( size_t nIndex, bool bValue );
        bool getBit( size_t nIndex ) const;

      private:
        byte*   m_pBytesForBits;
        size_t  m_nNoOfBytes;
        size_t  m_nNoOfBits;
    };
  }
}

////////////////////////////////////////////////////////////////////////////////

#endif