const.hh

// Copyright (C) 2007, 2008, 2009 EPITA Research and Development Laboratory (LRDE)
//
// This file is part of Olena.
//
// Olena 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, version 2 of the License.
//
// Olena 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 Olena.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free
// software project without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to produce
// an executable, this file does not by itself cause the resulting
// executable to be covered by the GNU General Public License.  This
// exception does not however invalidate any other reasons why the
// executable file might be covered by the GNU General Public License.

#ifndef MLN_METAL_CONST_HH
# define MLN_METAL_CONST_HH

# define mlc_const(T) typename mln::metal::const_< T >::ret

# define mlc_const_return(T) typename mln::metal::const_return_< T >::ret



namespace mln
{

  namespace metal
  {

    // const_

    template <typename T> struct const_/*      T       */ { typedef const T ret; };
    template <typename T> struct const_< const T        > { typedef const T ret; };

    template <typename T> struct const_<       T&       > { typedef const T& ret; };
    template <typename T> struct const_< const T&       > { typedef const T& ret; };

    template <typename T> struct const_<       T*       > { typedef const T* const ret; };
    template <typename T> struct const_< const T*       > { typedef const T* const ret; };
    template <typename T> struct const_<       T* const > { typedef const T* const ret; };
    template <typename T> struct const_< const T* const > { typedef const T* const ret; };


    // const_return_

    template <typename T> struct const_return_/*      T       */ { typedef       T ret; };
    template <typename T> struct const_return_< const T        > { typedef       T ret; };

    template <typename T> struct const_return_<       T&       > { typedef const T& ret; };
    template <typename T> struct const_return_< const T&       > { typedef const T& ret; };

    template <typename T> struct const_return_<       T*       > { typedef const T* ret; };
    template <typename T> struct const_return_< const T*       > { typedef const T* ret; };
    template <typename T> struct const_return_<       T* const > { typedef const T* ret; };
    template <typename T> struct const_return_< const T* const > { typedef const T* ret; };

  } // end of namespace mln::metal

} // end of namespace mln


#endif // ! MLN_METAL_CONST_HH