| /*============================================================================= |
| 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_DEREF_DATA_IMPL_HPP |
| #define BOOST_FUSION_CONTAINER_MAP_DETAIL_DEREF_DATA_IMPL_HPP |
| |
| #include <boost/fusion/support/config.hpp> |
| #include <boost/fusion/iterator/value_of.hpp> |
| #include <boost/fusion/iterator/deref.hpp> |
| #include <boost/fusion/support/detail/access.hpp> |
| #include <boost/type_traits/is_const.hpp> |
| #include <boost/mpl/if.hpp> |
| |
| namespace boost { namespace fusion { namespace extension |
| { |
| template <typename> |
| struct deref_data_impl; |
| |
| template <> |
| struct deref_data_impl<map_iterator_tag> |
| { |
| template <typename It> |
| struct apply |
| { |
| typedef typename result_of::value_of<It>::type::second_type data; |
| |
| typedef typename |
| mpl::if_< |
| is_const<typename It::seq_type> |
| , typename detail::cref_result<data>::type |
| , typename detail::ref_result<data>::type |
| >::type |
| type; |
| |
| BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| static type |
| call(It const& it) |
| { |
| return fusion::deref(it).second; |
| } |
| }; |
| }; |
| }}} |
| |
| #endif |
