LUMIERA.clone/src/lib/refarray.hpp

/*
  REFARRAY.hpp  -  abstraction providing array-like access to a list of references
 
  Copyright (C)         Lumiera.org
    2008,               Hermann Vosseler <Ichthyostega@web.de>
 
  This program is free software; 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 2 of the
  License, or (at your option) any later version.
 
  This program 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 General Public License for more details.
 
  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
*/


#ifndef LIB_REFARRAY_H
#define LIB_REFARRAY_H




namespace lib {
  
  /**
   * Abstraction: Array of const references.
   * Typically the return type is an interface, 
   * and the Implementation wraps some datastructure
   * holding subclasses.
   */
  template<class E>
  struct RefArray
    {
      virtual E const& operator[] (uint i)  const =0;
      virtual size_t size()  const =0;
      virtual ~RefArray() {}
    };
  
  
} // namespace lib
#endif