// Copyright (c) 1997-2002  Max-Planck-Institute Saarbruecken (Germany).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
// 
//
// Author(s)     : Michael Seel  <seel@mpi-sb.mpg.de>

#ifndef CGAL_GENERIC_HANDLE_MAP_H
#define CGAL_GENERIC_HANDLE_MAP_H

#include <CGAL/Unique_hash_map.h>

namespace CGAL {

struct Void_handle_hash_function {
    std::size_t operator() (void* h) const { 
        return std::size_t(h);
    }
};


template <class I>
class Generic_handle_map : public 
  Unique_hash_map<void*,I,Void_handle_hash_function>
{ typedef Unique_hash_map<void*,I,Void_handle_hash_function> Base;
public:
  Generic_handle_map() : Base() {}
  Generic_handle_map(I i) : Base(i) {}

  template <class H>
  const I& operator[](H h) const 
  { return Base::operator[](&*h); }

  template <class H>
  I& operator[](H h) 
  { return Base::operator[](&*h); }

};

} //namespace CGAL
#endif //CGAL_GENERIC_HANDLE_MAP_H