include/wipal/tool/static_base.hh

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/*
 * WiPal - A library and a set of tools to manipulate wireless traces.
 * Copyright (C) 2007, 2008, 2009  Universite Pierre et Marie Curie - Paris 6
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301  USA
 *
 * Author: Thomas Claveirole <thomas.claveirole@lip6.fr>
 */
#ifndef TOOL_STATIC_BASE_HH_
# define TOOL_STATIC_BASE_HH_

namespace wpl
{

  namespace tool
  {

    struct bottom
    {
    };

    struct undefined_type
    {
    };

    template <class Down, class Up>
    struct get_exact
    {
      typedef Down return_type; 
    };

    template <class Up>
    struct get_exact<bottom, Up>
    {
      typedef Up return_type; 
    };

# define WP_GET_EXACT(Down, Up...)                      \
    typename ::wpl::tool::get_exact<Down, Up>::return_type

    template <class Bottom>
    struct static_base
    {
      typedef WP_GET_EXACT(Bottom, static_base<Bottom>) exact_type;




      const exact_type& exact() const;

      exact_type&       exact();

      const exact_type* exact_ptr() const;

      exact_type*       exact_ptr();
    };

# define WP_INHERIT(Class, Parent...) Class<WP_GET_EXACT(Bottom, Parent)>

    template <class Type>
    struct types
    {
    };

# define WP_TYPE_(Type, Base...)        ::wpl::tool::types<Base>::Type
# define WP_TYPE(Type, Base...)         typename WP_TYPE_(Type, Base)

  } // End of namespace wpl::tool.

} // End of namespace wpl.

# include "static_base.hxx"

#endif // ! TOOL_STATIC_BASE_HH_

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