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- /*=============================================================================
- Copyright (c) 2009 Christopher Schmidt
- 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)
- ==============================================================================*/
- #ifndef BOOST_FUSION_CONTAINER_MAP_DETAIL_VALUE_OF_IMPL_HPP
- #define BOOST_FUSION_CONTAINER_MAP_DETAIL_VALUE_OF_IMPL_HPP
- #include <boost/fusion/support/config.hpp>
- #include <boost/fusion/sequence/intrinsic/value_at.hpp>
- #include <boost/type_traits/is_const.hpp>
- namespace boost { namespace fusion { namespace extension
- {
- template <typename>
- struct value_of_impl;
- template <>
- struct value_of_impl<map_iterator_tag>
- {
- template <typename It>
- struct apply
- {
- typedef typename
- result_of::value_at<
- typename mpl::if_<
- is_const<typename It::seq_type>
- , typename It::seq_type::storage_type const
- , typename It::seq_type::storage_type
- >::type
- , typename It::index
- >::type
- type;
- };
- };
- }}}
- #endif
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