68 lines
2.3 KiB
Plaintext
68 lines
2.3 KiB
Plaintext
/*=============================================================================
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Copyright (c) 2014-2015 Kohei Takahashi
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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 FUSION_AS_SET_11062014_2121
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#define FUSION_AS_SET_11062014_2121
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/container/set/set_fwd.hpp>
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///////////////////////////////////////////////////////////////////////////////
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// Without variadics, we will use the PP version
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///////////////////////////////////////////////////////////////////////////////
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#if !defined(BOOST_FUSION_HAS_VARIADIC_SET)
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# include <boost/fusion/container/set/detail/cpp03/as_set.hpp>
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#else
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///////////////////////////////////////////////////////////////////////////////
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// C++11 interface
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///////////////////////////////////////////////////////////////////////////////
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#include <boost/fusion/support/detail/index_sequence.hpp>
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#include <boost/fusion/container/set/set.hpp>
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#include <boost/fusion/iterator/value_of.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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#include <boost/fusion/iterator/advance.hpp>
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#include <cstddef>
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namespace boost { namespace fusion { namespace detail
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{
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BOOST_FUSION_BARRIER_BEGIN
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template <int size
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, typename = typename detail::make_index_sequence<size>::type>
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struct as_set;
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template <int size, std::size_t ...Indices>
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struct as_set<size, detail::index_sequence<Indices...> >
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{
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template <typename I>
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struct apply
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{
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typedef set<
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typename result_of::value_of<
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typename result_of::advance_c<I, Indices>::type
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>::type...
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> type;
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};
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template <typename Iterator>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static typename apply<Iterator>::type
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call(Iterator const& i)
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{
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typedef apply<Iterator> gen;
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typedef typename gen::type result;
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return result(*advance_c<Indices>(i)...);
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}
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};
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BOOST_FUSION_BARRIER_END
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}}}
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#endif
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#endif
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