12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849 |
- /*=============================================================================
- 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
|