container/deque/back_extended_deque.hpp

0001 /*=============================================================================
0002     Copyright (c) 2005-2012 Joel de Guzman
0003     Copyright (c) 2005-2006 Dan Marsden
0004
0005     Distributed under the Boost Software License, Version 1.0. (See accompanying
0006     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0007 ==============================================================================*/
0008 #if !defined(BOOST_FUSION_BACK_EXTENDED_DEQUE_26112006_2209)
0009 #define BOOST_FUSION_BACK_EXTENDED_DEQUE_26112006_2209
0010
0011 #include <boost/config.hpp>
0012 #include <boost/fusion/support/config.hpp>
0013 #include <boost/mpl/int.hpp>
0014
0015 #include <boost/fusion/sequence/intrinsic/size.hpp>
0016 #include <boost/fusion/support/sequence_base.hpp>
0017 #include <boost/fusion/container/deque/detail/keyed_element.hpp>
0018
0019 namespace boost { namespace fusion
0020 {
0021     template <typename Deque, typename T>
0022     struct back_extended_deque
0023       : detail::keyed_element<typename Deque::next_up, T, Deque>
0024       , sequence_base<back_extended_deque<Deque, T> >
0025     {
0026         typedef detail::keyed_element<typename Deque::next_up, T, Deque> base;
0027         typedef typename Deque::next_down next_down;
0028         typedef mpl::int_<(Deque::next_up::value + 1)> next_up;
0029         typedef mpl::int_<(result_of::size<Deque>::value + 1)> size;
0030
0031         template <typename Arg>
0032         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0033         back_extended_deque(Deque const& deque, Arg const& val)
0034           : base(val, deque)
0035         {}
0036
0037 #if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
0038         template <typename Arg>
0039         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0040         back_extended_deque(Deque const& deque, Arg& val)
0041           : base(val, deque)
0042         {}
0043 #else
0044         template <typename Arg>
0045         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0046         back_extended_deque(Deque const& deque, Arg&& val)
0047           : base(BOOST_FUSION_FWD_ELEM(Arg, val), deque)
0048         {}
0049 #endif
0050     };
0051 }}
0052
0053 #endif