Subversion Repositories scarts

// -*- C++ -*-
 
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library 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, or (at your option)
// any later version.
 
// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// 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 License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
 
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
 
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice and
// this permission notice appear in supporting documentation. None of
// the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied warranty.
 
/**
 * @file typelist_apply.hpp
 * Contains typelist utilities.
 * Typelists are an idea by Andrei Alexandrescu.
 */
 
#ifndef TYPELIST_APPLY_HPP
#define TYPELIST_APPLY_HPP
 
#ifdef _MSC_VER
#pragma warning(disable: 4503)
#endif // #ifdef _MSC_VER
 
#include <ext/pb_assoc/detail/type_utils.hpp>
 
namespace detail
{
 
  template<class Fn, class Typelist_Chain>
  struct apply_;
 
  template<class Fn, class Hd, class Tl>
  struct apply_<
    Fn,
    typelist_chain<Hd, Tl> >
  {
    void
    operator()(Fn& r_fn)
    {
      r_fn(Hd());
 
      apply_<Fn, Tl> next;
 
      next(r_fn);
    }
  };
 
  template<class Fn>
  struct apply_<
    Fn,
    null_type>
  {
    void
    operator()(Fn& /*r_fn*/)
    { }
  };
 
} // namespace detail
 
#endif // #ifndef TYPELIST_APPLY_HPP