/Src/Dependencies/Boost/boost/fusion/container/map/detail/deref_impl.hpp
http://hadesmem.googlecode.com/ · C++ Header · 45 lines · 33 code · 6 blank · 6 comment · 0 complexity · 401bf395490880828096ea10aba0cb07 MD5 · raw file
- /*=============================================================================
- 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