50 lines
1.6 KiB
Plaintext
50 lines
1.6 KiB
Plaintext
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/*=============================================================================
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Copyright (c) 2009 Christopher Schmidt
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef BOOST_FUSION_CONTAINER_MAP_DETAIL_DEREF_DATA_IMPL_HPP
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#define BOOST_FUSION_CONTAINER_MAP_DETAIL_DEREF_DATA_IMPL_HPP
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/iterator/value_of.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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#include <boost/fusion/support/detail/access.hpp>
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#include <boost/type_traits/is_const.hpp>
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#include <boost/mpl/if.hpp>
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namespace boost { namespace fusion { namespace extension
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{
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template <typename>
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struct deref_data_impl;
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template <>
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struct deref_data_impl<map_iterator_tag>
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{
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template <typename It>
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struct apply
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{
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typedef typename result_of::value_of<It>::type::second_type data;
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typedef typename
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mpl::if_<
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is_const<typename It::seq_type>
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, typename detail::cref_result<data>::type
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, typename detail::ref_result<data>::type
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>::type
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type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static type
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call(It const& it)
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{
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return fusion::deref(it).second;
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}
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};
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};
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}}}
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#endif
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