| /*============================================================================= | |
| 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_IMPL_HPP | |
| #define BOOST_FUSION_CONTAINER_MAP_DETAIL_DEREF_IMPL_HPP | |
| #include <boost/fusion/sequence/intrinsic/at.hpp> | |
| #include <boost/type_traits/is_const.hpp> | |
| namespace boost { namespace fusion { namespace extension | |
| { | |
| template <typename> | |
| struct deref_impl; | |
| template <> | |
| struct deref_impl<map_iterator_tag> | |
| { | |
| template <typename It> | |
| struct apply | |
| { | |
| typedef typename | |
| result_of::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; | |
| static type | |
| call(It const& it) | |
| { | |
| return at<typename It::index>(it.seq->get_data()); | |
| } | |
| }; | |
| }; | |
| }}} | |
| #endif |