cast.hh

// Copyright (C) 2001, 2002, 2003, 2004  EPITA Research and Development Laboratory
//
// This file is part of the Olena Library.  This library is free
// software; you can redistribute it and/or modify it under the terms
// of the GNU General Public License version 2 as published by the
// Free Software Foundation.
//
// 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this library; see the file COPYING.  If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.
//
// As a special exception, you may use this file as part of a free
// software library 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
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// Public License.

#ifndef OLENA_CONVERT_CAST_HH
# define OLENA_CONVERT_CAST_HH

# include <oln/convert/abstract/conversion.hh>
# include <ntg/utils/cast.hh>

namespace oln {
  namespace convert {

    template<class Output, class Exact = mlc::final>
    struct cast : public abstract::conversion_to_type< Output, typename mlc::exact_vt<cast<Output, Exact>, Exact>::ret >
    {
      template< class Input >
      Output
      doit(const Input& v) const
      {
        return v;
      }

      static std::string
      name()
      {
        // FIXME: ntg_name(Exact) will not work for mlc::final !
        return std::string("cast<")
          + ntg_name(Output) + ", "
          + "FIXME: ntg_name(Exact)" + ">";
      }

    };

  } // convert
} // oln

#endif // OLENA_CONVERT_CAST_HH

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