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File: reverse_cons.hpp
/*============================================================================= Copyright (c) 2011 Eric Niebler Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) ==============================================================================*/ #if !defined(BOOST_FUSION_REVERSE_CONS_HPP_INCLUDED) #define BOOST_FUSION_REVERSE_CONS_HPP_INCLUDED #include <boost/fusion/support/config.hpp> #include <boost/fusion/container/list/cons_fwd.hpp> namespace boost { namespace fusion { namespace detail { //////////////////////////////////////////////////////////////////////////// template<typename Cons, typename State = nil_> struct reverse_cons; template<typename Car, typename Cdr, typename State> struct reverse_cons<cons<Car, Cdr>, State> { typedef reverse_cons<Cdr, cons<Car, State> > impl; typedef typename impl::type type; BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED static type call(cons<Car, Cdr> const &cons, State const &state = State()) { typedef fusion::cons<Car, State> cdr_type; return impl::call(cons.cdr, cdr_type(cons.car, state)); } }; template<typename State> struct reverse_cons<nil_, State> { typedef State type; BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED static State const &call(nil_ const &, State const &state = State()) { return state; } }; }}} #endif