forked from boostorg/fusion
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
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/*=============================================================================
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Copyright (c) 2009-2010 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_ADAPTED_DETAIL_STRUCT_DEREF_IMPL_HPP
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#define BOOST_FUSION_ADAPTED_DETAIL_STRUCT_DEREF_IMPL_HPP
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#include <boost/fusion/support/detail/access.hpp>
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#include <boost/mpl/eval_if.hpp>
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#include <boost/type_traits/remove_const.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<struct_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
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extension::struct_member<
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typename remove_const<typename It::seq_type>::type
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, It::index::value
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>
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member;
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typedef typename
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mpl::eval_if<
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is_const<typename It::seq_type>
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, detail::cref_result<member>
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, detail::ref_result<member>
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>::type
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type;
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static type
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call(It const& it)
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{
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return member::call(*it.seq);
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}
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};
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};
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template <>
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struct deref_impl<assoc_struct_iterator_tag>
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: deref_impl<struct_iterator_tag>
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{};
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}}}
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#endif
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