Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2005-2013 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(BOOST_FUSION_BUILD_DEQUE_02032013_1921)
Chris@16: #define BOOST_FUSION_BUILD_DEQUE_02032013_1921
Chris@16: 
Chris@101: #include <boost/fusion/support/config.hpp>
Chris@16: #include <boost/fusion/iterator/equal_to.hpp>
Chris@16: #include <boost/fusion/iterator/next.hpp>
Chris@16: #include <boost/fusion/iterator/value_of.hpp>
Chris@16: #include <boost/fusion/iterator/deref.hpp>
Chris@16: #include <boost/fusion/sequence/intrinsic/begin.hpp>
Chris@16: #include <boost/fusion/sequence/intrinsic/end.hpp>
Chris@16: #include <boost/fusion/container/deque/front_extended_deque.hpp>
Chris@16: 
Chris@16: namespace boost { namespace fusion { namespace detail
Chris@16: {
Chris@16:     template <typename First, typename Last
Chris@16:       , bool is_empty = result_of::equal_to<First, Last>::value>
Chris@16:     struct build_deque;
Chris@16: 
Chris@16:     template <typename First, typename Last>
Chris@16:     struct build_deque<First, Last, true>
Chris@16:     {
Chris@16:         typedef deque<> type;
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         static type
Chris@16:         call(First const&, Last const&)
Chris@16:         {
Chris@16:             return type();
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     template <typename T, typename Rest>
Chris@16:     struct push_front_deque;
Chris@16: 
Chris@16:     template <typename T, typename ...Rest>
Chris@16:     struct push_front_deque<T, deque<Rest...>>
Chris@16:     {
Chris@16:         typedef deque<T, Rest...> type;
Chris@16: 
Chris@101:         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         static type
Chris@16:         call(T const& first, deque<Rest...> const& rest)
Chris@16:         {
Chris@16:             return type(front_extended_deque<deque<Rest...>, T>(rest, first));
Chris@16:         }
Chris@16:     };
Chris@16: 
Chris@16:     template <typename First, typename Last>
Chris@16:     struct build_deque<First, Last, false>
Chris@16:     {
Chris@16:         typedef
Chris@16:             build_deque<typename result_of::next<First>::type, Last>
Chris@16:         next_build_deque;
Chris@16: 
Chris@16:         typedef push_front_deque<
Chris@16:             typename result_of::value_of<First>::type
Chris@16:           , typename next_build_deque::type>
Chris@16:         push_front;
Chris@16: 
Chris@16:         typedef typename push_front::type type;
Chris@16: 
Chris@101:         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:         static type
Chris@16:         call(First const& f, Last const& l)
Chris@16:         {
Chris@16:             typename result_of::value_of<First>::type v = *f;
Chris@16:             return push_front::call(
Chris@16:                 v, next_build_deque::call(fusion::next(f), l));
Chris@16:         }
Chris@16:     };
Chris@16: }}}
Chris@16: 
Chris@16: #endif