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62 lines
1.8 KiB
62 lines
1.8 KiB
3 years ago
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/*=============================================================================
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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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#if BOOST_WORKAROUND(BOOST_GCC, < 30500)
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#include <boost/core/enable_if.hpp>
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#include <boost/type_traits/is_const.hpp>
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#define BOOST_FUSION_WA_GCC34(type1, type2) \
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boost::lazy_disable_if<boost::is_const<Sequence>, type1, type2>
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#else
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#define BOOST_FUSION_WA_GCC34(type1, type2) type1, type2
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#endif
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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 BOOST_FUSION_WA_GCC34(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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#undef BOOST_FUSION_WA_GCC34
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#endif
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