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44 lines
1.1 KiB
44 lines
1.1 KiB
3 years ago
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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_ITERATOR_KEY_OF_HPP
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#define BOOST_FUSION_ITERATOR_KEY_OF_HPP
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/support/tag_of.hpp>
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namespace boost { namespace fusion
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{
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struct iterator_facade_tag;
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namespace extension
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{
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template <typename>
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struct key_of_impl;
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template <>
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struct key_of_impl<iterator_facade_tag>
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{
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template <typename It>
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struct apply
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: It::template key_of<It>
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{};
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};
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}
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namespace result_of
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{
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template <typename It>
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struct key_of
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: extension::key_of_impl<typename traits::tag_of<It>::type>::
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template apply<It>
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{};
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}
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}}
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#endif
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