/*=============================================================================

    Copyright (c) 2001-2006 Joel de Guzman

    Copyright (c) 2005-2006 Dan Marsden



    Distributed under the Boost Software License, Version 1.0. (See accompanying 

    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

==============================================================================*/

#if !defined(BOOST_FUSION_BEGIN_IMPL_31122005_1209)

#define BOOST_FUSION_BEGIN_IMPL_31122005_1209



#include <boost/fusion/adapted/mpl/mpl_iterator.hpp>

#include <boost/mpl/begin.hpp>

#include <boost/type_traits/remove_const.hpp>



namespace boost { namespace fusion {

    

    struct mpl_sequence_tag;



    namespace extension

    {

        template <typename Tag>

        struct begin_impl;



        template <>

        struct begin_impl<mpl_sequence_tag>

        {

            template <typename Sequence>

            struct apply 

            {

                typedef typename mpl::begin<

                    typename remove_const<Sequence>::type

                >::type iterator;

                typedef mpl_iterator<iterator> type;

                

                static type

                call(Sequence)

                {

                    return type();

                }

            };

        };

    }

}}



#endif

