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71 lines
2.2 KiB
71 lines
2.2 KiB
3 years ago
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/*=============================================================================
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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_VECTOR_11052014_1801
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#define FUSION_AS_VECTOR_11052014_1801
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/container/vector/detail/config.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_VECTOR)
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# include <boost/fusion/container/vector/detail/cpp03/as_vector.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/vector/vector.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 <typename Indices>
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struct as_vector_impl;
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template <std::size_t ...Indices>
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struct as_vector_impl<index_sequence<Indices...> >
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{
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template <typename Iterator>
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struct apply
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{
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typedef vector<
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typename result_of::value_of<
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typename result_of::advance_c<Iterator, 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 i)
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{
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typedef typename apply<Iterator>::type result;
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return result(*advance_c<Indices>(i)...);
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}
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};
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template <int size>
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struct as_vector
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: as_vector_impl<typename make_index_sequence<size>::type> {};
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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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