48 lines
1.5 KiB
Plaintext
48 lines
1.5 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_IMPL_HPP
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#define BOOST_FUSION_CONTAINER_MAP_DETAIL_DEREF_IMPL_HPP
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/sequence/intrinsic/at.hpp>
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#include <boost/type_traits/is_const.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_impl;
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template <>
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struct deref_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
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result_of::at<
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typename mpl::if_<
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is_const<typename It::seq_type>
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, typename It::seq_type::storage_type const
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, typename It::seq_type::storage_type
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>::type
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, typename It::index
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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::at<typename It::index>(it.seq->get_data());
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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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