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

    Copyright (c) 2003 Joel de Guzman

    Copyright (c) 2004 Peder Holt



    Use, modification and distribution is subject to 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(FUSION_ITERATOR_DETAIL_TYPE_SEQUENCE_ITERATOR_NEXT_TRAITS_HPP)

#define FUSION_ITERATOR_DETAIL_TYPE_SEQUENCE_ITERATOR_NEXT_TRAITS_HPP



#include <boost/spirit/fusion/detail/config.hpp>

#include <boost/mpl/next.hpp>



namespace boost { namespace fusion

{

    struct type_sequence_iterator_tag;



    template <typename Iterator>

    struct type_sequence_iterator;



    namespace type_sequence_detail {

        template <typename Iterator>

        struct next_traits_impl

        {

            typedef type_sequence_iterator<

                typename mpl::next<typename Iterator::iterator_type>::type

            > type;



            static type

            call(Iterator);

        };



        template <typename Iterator>

        typename next_traits_impl<Iterator>::type

        next_traits_impl<Iterator>::call(Iterator)

        {

            FUSION_RETURN_DEFAULT_CONSTRUCTED;

        }

    }



    namespace meta

    {

        template <typename Tag>

        struct next_impl;



        template <>

        struct next_impl<type_sequence_iterator_tag>

        {

            template <typename Iterator>

            struct apply : type_sequence_detail::next_traits_impl<Iterator>

            {};

        };

    }

}}



#endif





