/*
 *  Open BEAGLE
 *  Copyright (C) 2001-2004 by Christian Gagne and Marc Parizeau
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact:
 *  Laboratoire de Vision et Systemes Numeriques
 *  Departement de genie electrique et de genie informatique
 *  Universite Laval, Quebec, Canada, G1V 4J7
 *  http://vision.gel.ulaval.ca
 *
 */

/*!
 *  \file   beagle/AbstractAllocT.hpp
 *  \brief  Definition of abstract templated class AbstractAllocT.
 *  \author Christian Gagne
 *  \author Marc Parizeau
 *  $Revision: 1.2 $
 *  $Date: 2004/01/15 21:08:57 $
 */

#ifndef Beagle_AbstractAllocT_hpp
#define Beagle_AbstractAllocT_hpp

#include "beagle/config.hpp"
#include "beagle/macros.hpp"
#include "beagle/Allocator.hpp"
#include "beagle/PointerT.hpp"
#include "beagle/AllocatorT.hpp"


namespace Beagle {

/*!
 *  \class AbstractAllocT beagle/AbstractAllocT.hpp "beagle/AbstractAllocT.hpp"
 *  \brief Abstract templated allocator class.
 *  \param T Type (abtsract) of object allocated.
 *  \param BaseType Base type from which the actual allocator type is derived.
 *  \ingroup OOF
 *  \ingroup Allocs
 *  \par Note:
 *    This class is usually used to define the Alloc type of an abstract Beagle class.
 */
template <class T, class BaseType>
class AbstractAllocT : public BaseType {

public:

  //! AbstractAllocT allocator type.
  typedef AbstractAllocT<AbstractAllocT<T,BaseType>,typename BaseType::Alloc>
          Alloc;
  //! AbstractAllocT handle type.
  typedef PointerT<AbstractAllocT<T,BaseType>,typename BaseType::Handle>
          Handle;
  //! AbstractAllocT bag type.
  typedef ContainerT<AbstractAllocT<T,BaseType>,typename BaseType::Bag>
          Bag;

           AbstractAllocT() { }
  virtual ~AbstractAllocT() { }

  /*!
   *  \brief  Allocate a new object on the heap.
   *  \return Pointer to the allocated object.
   */
  virtual Object* allocate() const =0;

  /*!
   *  \brief  Allocate a new object on the heap that is a clone an existing object.
   *  \param  inOrigObj Constant reference to the original object to clone.
   *  \return Pointer to the allocated object.
   */
  virtual Object* clone(const Object& inOrigObj) const =0;

  /*!
   *  \brief Copy an object into another.
   *  \param inOrigObj Constant reference to the original object to copy.
   *  \param outCopyObj Reference to the object that is a copy of the original.
   */
  virtual void copy(Object& outCopyObj, const Object& inOrigObj) const =0;

};

}

#endif // Beagle_AbstractAllocT_hpp

