forked from boostorg/fusion
2114bfca6c
Note 1: Forwarding functions are specified as a C++14 constexpr since std::forward is not a constexpr within C++11. Note 2: Though I'm not sure why it doesn't compile, some declarations are specified as a C++14 constexpr or non-constexpr. Note 3: Boost.Tuple adaptation and TR1-based tuple implementations are not constexpr.
53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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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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#if !defined(FUSION_CONVERT_10022005_1442)
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#define FUSION_CONVERT_10022005_1442
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#include <boost/fusion/support/config.hpp>
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namespace boost { namespace fusion
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{
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namespace extension
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{
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template <typename Tag>
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struct convert_impl;
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}
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namespace result_of
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{
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template <typename Tag, typename Sequence>
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struct convert
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{
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typedef typename
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extension::convert_impl<Tag>::template apply<Sequence>
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gen;
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typedef typename gen::type type;
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};
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}
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template <typename Tag, typename Sequence>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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inline typename result_of::convert<Tag, Sequence>::type
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convert(Sequence& seq)
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{
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typedef typename result_of::convert<Tag, Sequence>::gen gen;
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return gen::call(seq);
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}
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template <typename Tag, typename Sequence>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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inline typename result_of::convert<Tag, Sequence const>::type
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convert(Sequence const& seq)
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{
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typedef typename result_of::convert<Tag, Sequence const>::gen gen;
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return gen::call(seq);
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}
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}}
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#endif
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