AbstractBuffer.h++

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/* ---------------------------------------------------------------------------
   commonc++ - A C++ Common Class Library
   Copyright (C) 2005-2014  Mark A Lindner

   This file is part of commonc++.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   ---------------------------------------------------------------------------
*/

#ifndef __ccxx_AbstractBuffer_hxx
#define __ccxx_AbstractBuffer_hxx

#include <commonc++/Common.h++>
#include <commonc++/UnsupportedOperationException.h++>

#include <cstring>

namespace ccxx {

template<typename T> class AbstractBuffer
{
 public:

  virtual ~AbstractBuffer();

  virtual void setSize(uint_t newSize);

  virtual void clear();

  inline uint_t getSize() const
  { return(_size); }

  virtual uint_t getRemaining() const = 0;

  inline virtual bool hasRemaining() const
  { return(getRemaining() > 0); }

  inline T* getBase()
  { return(_data); }

  inline const T* getBase() const
  { return(_data); }

 protected:

  AbstractBuffer(uint_t size);

  AbstractBuffer(T* data, size_t size, bool takeOwnership = true);

  T* _data;
  uint_t _size;
  bool _owner;

 private:

  CCXX_COPY_DECLS(AbstractBuffer);
};

#include <commonc++/AbstractBufferImpl.h++>

} // namespace ccxx

#endif // __ccxx_AbstractBuffer_hxx