GL Profile Suite / boost_1_51_0 / boost / fusion / container / vector / detail / deref_impl.hpp

    Copyright (c) 2001-2011 Joel de Guzman

    Distributed under the Boost Software License, Version 1.0. (See accompanying 
    file LICENSE_1_0.txt or copy at
#if !defined(FUSION_DEREF_IMPL_05042005_1037)
#define FUSION_DEREF_IMPL_05042005_1037

#include <boost/mpl/at.hpp>
#include <boost/fusion/support/detail/access.hpp>
#include <boost/type_traits/is_const.hpp>
#include <boost/mpl/if.hpp>

namespace boost { namespace fusion
    struct vector_iterator_tag;

    namespace extension
        template <typename Tag>
        struct deref_impl;

        template <>
        struct deref_impl<vector_iterator_tag>
            template <typename Iterator>
            struct apply 
                typedef typename Iterator::vector vector;
                typedef typename Iterator::index index;
                typedef typename mpl::at<
                    typename vector::types, index>::type
                typedef typename
                      , typename fusion::detail::cref_result<element>::type
                      , typename fusion::detail::ref_result<element>::type

                static type
                call(Iterator const& i)
                    return i.vec.at_impl(index());

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