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47 lines
1.5 KiB
47 lines
1.5 KiB
/*=============================================================================
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Copyright (c) 2011 Eric Niebler
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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_REVERSE_CONS_HPP_INCLUDED)
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#define BOOST_FUSION_REVERSE_CONS_HPP_INCLUDED
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/container/list/cons_fwd.hpp>
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namespace boost { namespace fusion { namespace detail
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{
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////////////////////////////////////////////////////////////////////////////
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template<typename Cons, typename State = nil_>
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struct reverse_cons;
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template<typename Car, typename Cdr, typename State>
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struct reverse_cons<cons<Car, Cdr>, State>
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{
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typedef reverse_cons<Cdr, cons<Car, State> > impl;
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typedef typename impl::type type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static type call(cons<Car, Cdr> const &cons, State const &state = State())
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{
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typedef fusion::cons<Car, State> cdr_type;
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return impl::call(cons.cdr, cdr_type(cons.car, state));
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}
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};
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template<typename State>
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struct reverse_cons<nil_, State>
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{
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typedef State type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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static State const &call(nil_ const &, State const &state = State())
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{
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return state;
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}
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};
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}}}
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#endif
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