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

    Copyright (c) 2003 Joel de Guzman



    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_TUPLE_ITERATOR_VALUE_TRAITS_HPP)

#define FUSION_ITERATOR_DETAIL_TUPLE_ITERATOR_VALUE_TRAITS_HPP



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

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

#include <boost/spirit/fusion/sequence/tuple_element.hpp>



namespace boost { namespace fusion

{

    struct tuple_iterator_tag;



    namespace detail

    {

        template <int N>

        struct tuple_access;

    }



    namespace detail

    {

        template <typename Iterator>

        struct tuple_iterator_value_traits_impl

        {

            typedef FUSION_GET_INDEX(Iterator) index;

            typedef FUSION_GET_TUPLE(Iterator) tuple_;



            typedef BOOST_DEDUCED_TYPENAME

                tuple_element<

                    FUSION_GET_VALUE(index), tuple_>::type

            type;

        };

    }



    namespace meta

    {

        template <typename Tag>

        struct value_impl;



        template <>

        struct value_impl<tuple_iterator_tag>

        {

            template <typename Iterator>

            struct apply : detail::tuple_iterator_value_traits_impl<Iterator> {};

        };

    }

}}



#endif

