79 lines
2.5 KiB
Plaintext
79 lines
2.5 KiB
Plaintext
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/*=============================================================================
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Copyright (c) 2005-2013 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(BOOST_FUSION_BUILD_DEQUE_02032013_1921)
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#define BOOST_FUSION_BUILD_DEQUE_02032013_1921
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/iterator/equal_to.hpp>
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#include <boost/fusion/iterator/next.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/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/container/deque/front_extended_deque.hpp>
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namespace boost { namespace fusion { namespace detail
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{
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template <typename First, typename Last
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, bool is_empty = result_of::equal_to<First, Last>::value>
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struct build_deque;
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template <typename First, typename Last>
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struct build_deque<First, Last, true>
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{
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typedef deque<> type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static type
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call(First const&, Last const&)
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{
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return type();
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}
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};
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template <typename T, typename Rest>
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struct push_front_deque;
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template <typename T, typename ...Rest>
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struct push_front_deque<T, deque<Rest...>>
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{
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typedef deque<T, Rest...> type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static type
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call(T const& first, deque<Rest...> const& rest)
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{
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return type(front_extended_deque<deque<Rest...>, T>(rest, first));
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}
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};
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template <typename First, typename Last>
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struct build_deque<First, Last, false>
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{
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typedef
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build_deque<typename result_of::next<First>::type, Last>
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next_build_deque;
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typedef push_front_deque<
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typename result_of::value_of<First>::type
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, typename next_build_deque::type>
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push_front;
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typedef typename push_front::type type;
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BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static type
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call(First const& f, Last const& l)
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{
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typename result_of::value_of<First>::type v = *f;
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return push_front::call(
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v, next_build_deque::call(fusion::next(f), l));
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}
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};
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}}}
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#endif
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