Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16:     Copyright (c) 2006 Dan Marsden
Chris@16:     Copyright (c) 2009-2010 Christopher Schmidt
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: #include <boost/preprocessor/cat.hpp>
Chris@16: 
Chris@16: #ifdef BOOST_FUSION_REVERSE_FOLD
Chris@16: #   ifdef BOOST_FUSION_ITER_FOLD
Chris@16: #       define BOOST_FUSION_FOLD_NAME reverse_iter_fold
Chris@16: #   else
Chris@16: #       define BOOST_FUSION_FOLD_NAME reverse_fold
Chris@16: #   endif
Chris@16: 
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION end
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION prior
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(IT)                   \
Chris@16:         typename fusion::result_of::prior<IT>::type
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(IT) fusion::prior(IT)
Chris@16: #else
Chris@16: #   ifdef BOOST_FUSION_ITER_FOLD
Chris@16: #       define BOOST_FUSION_FOLD_NAME iter_fold
Chris@16: #   else
Chris@16: #       define BOOST_FUSION_FOLD_NAME fold
Chris@16: #   endif
Chris@16: 
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION begin
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION next
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(IT) IT
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(IT) IT
Chris@16: #endif
Chris@16: #ifdef BOOST_FUSION_ITER_FOLD
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(IT) IT&
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(IT) IT
Chris@16: #else
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(IT)                  \
Chris@16:         typename fusion::result_of::deref<IT>::type
Chris@16: #   define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(IT) fusion::deref(IT)
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost { namespace fusion
Chris@16: {
Chris@16:     namespace detail
Chris@16:     {
Chris@16:         template<typename State, typename It, typename F>
Chris@16:         struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)
Chris@101:           : fusion::detail::result_of_with_decltype<
Chris@16:                 F(
Chris@16:                 typename add_reference<typename add_const<State>::type>::type,
Chris@16:                 BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(It))
Chris@16:             >
Chris@16:         {};
Chris@16: 
Chris@16:         template<typename Result,int N>
Chris@16:         struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)
Chris@16:         {
Chris@101:             template<typename State3, typename It3, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static Result
Chris@101:             call_3(State3 const& state3,It3 const& it3,F& f)
Chris@16:             {
Chris@16:                 return BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@16:                     Result
Chris@16:                   , N-4
Chris@16:                 >::call(
Chris@16:                     f(state3,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it3)),
Chris@16:                     fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it3),
Chris@16:                     f);
Chris@16:             }
Chris@101: 
Chris@101:             template<typename State2, typename It2, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:             static Result
Chris@101:             call_2(State2 const& state2,It2 const& it2,F& f)
Chris@101:             {
Chris@101:                 return call_3(
Chris@101:                     f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2)),
Chris@101:                     fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it2),
Chris@101:                     f);
Chris@101:             }
Chris@101: 
Chris@101:             template<typename State1, typename It1, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:             static Result
Chris@101:             call_1(State1 const& state1,It1 const& it1,F& f)
Chris@101:             {
Chris@101:                 return call_2(
Chris@101:                     f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1)),
Chris@101:                     fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1),
Chris@101:                     f);
Chris@101:             }
Chris@101: 
Chris@101:             template<typename State, typename It0, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:             static Result
Chris@101:             call(State const& state,It0 const& it0,F f)
Chris@101:             {
Chris@101:                 return call_1(
Chris@101:                     f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)),
Chris@101:                     fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0),
Chris@101:                     f);
Chris@101:             }
Chris@16:         };
Chris@16: 
Chris@16:         template<typename Result>
Chris@16:         struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,3>
Chris@16:         {
Chris@101:             template<typename State2, typename It2, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:             static Result
Chris@101:             call_2(State2 const& state2,It2 const& it2,F& f)
Chris@101:             {
Chris@101:                 return f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2));
Chris@101:             }
Chris@101: 
Chris@101:             template<typename State1, typename It1, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:             static Result
Chris@101:             call_1(State1 const& state1,It1 const& it1,F& f)
Chris@101:             {
Chris@101:                 return call_2(
Chris@101:                     f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1)),
Chris@101:                     fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1),
Chris@101:                     f);
Chris@101:             }
Chris@101: 
Chris@16:             template<typename State, typename It0, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static Result
Chris@16:             call(State const& state,It0 const& it0,F f)
Chris@16:             {
Chris@101:                 return call_1(
Chris@101:                     f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)),
Chris@101:                     fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0),
Chris@101:                     f);
Chris@16:             }
Chris@16:         };
Chris@16: 
Chris@16:         template<typename Result>
Chris@16:         struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,2>
Chris@16:         {
Chris@101:             template<typename State1, typename It1, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:             static Result
Chris@101:             call_1(State1 const& state1,It1 const& it1,F& f)
Chris@101:             {
Chris@101:                 return f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1));
Chris@101:             }
Chris@101: 
Chris@16:             template<typename State, typename It0, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static Result
Chris@16:             call(State const& state,It0 const& it0,F f)
Chris@16:             {
Chris@101:                 return call_1(
Chris@101:                     f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)),
Chris@101:                     fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0),
Chris@101:                     f);
Chris@16:             }
Chris@16:         };
Chris@16: 
Chris@16:         template<typename Result>
Chris@16:         struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,1>
Chris@16:         {
Chris@16:             template<typename State, typename It0, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static Result
Chris@16:             call(State const& state,It0 const& it0,F f)
Chris@16:             {
Chris@16:                 return f(state,
Chris@16:                     BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0));
Chris@16:             }
Chris@16:         };
Chris@16: 
Chris@16:         template<typename Result>
Chris@16:         struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,0>
Chris@16:         {
Chris@16:             template<typename State, typename It0, typename F>
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static Result
Chris@101:             call(State const& state,It0 const&, F)
Chris@16:             {
Chris@16:                 return static_cast<Result>(state);
Chris@16:             }
Chris@16:         };
Chris@16: 
Chris@16:         template<typename StateRef, typename It0, typename F, int N>
Chris@16:         struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)
Chris@16:         {
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                     StateRef
Chris@16:                   , It0 const
Chris@16:                   , F
Chris@16:                 >::type
Chris@16:             rest1;
Chris@16:             typedef typename
Chris@16:                 result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
Chris@16:                     It0 const
Chris@16:                 >::type
Chris@16:             it1;
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                     rest1
Chris@16:                   , it1
Chris@16:                   , F
Chris@16:                 >::type
Chris@16:             rest2;
Chris@16:             typedef typename
Chris@16:                 result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<it1>::type
Chris@16:             it2;
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                     rest2
Chris@16:                   , it2
Chris@16:                   , F
Chris@16:                 >::type
Chris@16:             rest3;
Chris@16:             typedef typename
Chris@16:                 result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<it2>::type
Chris@16:             it3;
Chris@16: 
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@16:                     typename BOOST_PP_CAT(
Chris@16:                         BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                         rest3
Chris@16:                       , it3
Chris@16:                       , F
Chris@16:                     >::type
Chris@16:                   , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
Chris@16:                         it3
Chris@16:                     >::type
Chris@16:                   , F
Chris@16:                   , N-4
Chris@16:                 >::type
Chris@16:             type;
Chris@16:         };
Chris@16: 
Chris@16:         template<typename StateRef, typename It0, typename F>
Chris@16:         struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@16:             StateRef
Chris@16:           , It0
Chris@16:           , F
Chris@16:           , 3
Chris@16:         >
Chris@16:         {
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                     StateRef
Chris@16:                   , It0 const
Chris@16:                   , F
Chris@16:                 >::type
Chris@16:             rest1;
Chris@16:             typedef typename
Chris@16:                 result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
Chris@16:                     It0 const
Chris@16:                 >::type
Chris@16:             it1;
Chris@16: 
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                     typename BOOST_PP_CAT(
Chris@16:                         BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                         rest1
Chris@16:                       , it1
Chris@16:                       , F
Chris@16:                     >::type
Chris@16:                   , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
Chris@16:                         it1 const
Chris@16:                     >::type const
Chris@16:                   , F
Chris@16:                 >::type
Chris@16:             type;
Chris@16:         };
Chris@16: 
Chris@16:         template<typename StateRef, typename It0, typename F>
Chris@16:         struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@16:             StateRef
Chris@16:           , It0
Chris@16:           , F
Chris@16:           , 2
Chris@16:         >
Chris@16:           : BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                 typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                     StateRef
Chris@16:                   , It0 const
Chris@16:                   , F
Chris@16:                 >::type
Chris@16:               , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
Chris@16:                     It0 const
Chris@16:                 >::type const
Chris@16:               , F
Chris@16:             >
Chris@16:         {};
Chris@16: 
Chris@16:         template<typename StateRef, typename It0, typename F>
Chris@16:         struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@16:             StateRef
Chris@16:           , It0
Chris@16:           , F
Chris@16:           , 1
Chris@16:         >
Chris@16:           : BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<
Chris@16:                 StateRef
Chris@16:               , It0 const
Chris@16:               , F
Chris@16:             >
Chris@16:         {};
Chris@16: 
Chris@16:         template<typename StateRef, typename It0, typename F>
Chris@16:         struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@16:             StateRef
Chris@16:           , It0
Chris@16:           , F
Chris@16:           , 0
Chris@16:         >
Chris@16:         {
Chris@16:             typedef StateRef type;
Chris@16:         };
Chris@16: 
Chris@16:         template<typename StateRef, typename It0, typename F, int SeqSize>
Chris@16:         struct BOOST_PP_CAT(result_of_first_unrolled,BOOST_FUSION_FOLD_NAME)
Chris@16:         {
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@101:                     typename fusion::detail::result_of_with_decltype<
Chris@16:                         F(
Chris@16:                             StateRef,
Chris@16:                             BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(
Chris@16:                                 It0 const)
Chris@16:                         )
Chris@16:                     >::type
Chris@16:                   , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<
Chris@16:                         It0 const
Chris@16:                     >::type
Chris@16:                   , F
Chris@16:                   , SeqSize-1
Chris@16:                 >::type
Chris@16:             type;
Chris@16:         };
Chris@16: 
Chris@16:         template<int SeqSize, typename StateRef, typename Seq, typename F>
Chris@16:         struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)
Chris@16:         {
Chris@16:             typedef typename
Chris@16:                 BOOST_PP_CAT(
Chris@16:                     result_of_first_unrolled,BOOST_FUSION_FOLD_NAME)<
Chris@16:                     StateRef
Chris@16:                   , BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(
Chris@16:                         typename result_of::BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION<Seq>::type
Chris@16:                     )
Chris@16:                   , F
Chris@16:                   , SeqSize
Chris@16:                 >::type
Chris@16:             type;
Chris@16: 
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static type
Chris@16:             call(StateRef state, Seq& seq, F f)
Chris@16:             {
Chris@16:                 typedef
Chris@16:                     BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<
Chris@16:                         type
Chris@16:                       , SeqSize
Chris@16:                     >
Chris@16:                 unrolled_impl;
Chris@16: 
Chris@16:                 return unrolled_impl::call(
Chris@16:                     state,
Chris@16:                     BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(
Chris@16:                         fusion::BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION(seq)),
Chris@16:                     f);
Chris@16:             }
Chris@16:         };
Chris@16: 
Chris@16:         template<typename StateRef, typename Seq, typename F>
Chris@16:         struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)<0,StateRef,Seq,F>
Chris@16:         {
Chris@16:             typedef StateRef type;
Chris@16: 
Chris@101:             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static StateRef
Chris@16:             call(StateRef state, Seq&, F)
Chris@16:             {
Chris@16:                 return static_cast<StateRef>(state);
Chris@16:             }
Chris@16:         };
Chris@16: 
Chris@16:         template<typename Seq, typename State, typename F, bool IsSegmented>
Chris@16:         struct BOOST_PP_CAT(result_of_, BOOST_FUSION_FOLD_NAME)
Chris@16:           : BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)<
Chris@16:                 result_of::size<Seq>::value
Chris@16:               , typename add_reference<
Chris@16:                     typename add_const<State>::type
Chris@16:                 >::type
Chris@16:               , Seq
Chris@16:               , F
Chris@16:             >
Chris@16:         {};
Chris@16:     }
Chris@16: 
Chris@16:     namespace result_of
Chris@16:     {
Chris@16:         template<typename Seq, typename State, typename F>
Chris@16:         struct BOOST_FUSION_FOLD_NAME
Chris@16:           : detail::BOOST_PP_CAT(result_of_, BOOST_FUSION_FOLD_NAME)<
Chris@16:                 Seq
Chris@16:               , State
Chris@16:               , F
Chris@16:               , traits::is_segmented<Seq>::type::value
Chris@16:             >
Chris@16:         {};
Chris@16:     }
Chris@16: 
Chris@16:     template<typename Seq, typename State, typename F>
Chris@101:     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:     inline typename result_of::BOOST_FUSION_FOLD_NAME<
Chris@16:         Seq
Chris@16:       , State const
Chris@16:       , F
Chris@16:     >::type
Chris@16:     BOOST_FUSION_FOLD_NAME(Seq& seq, State const& state, F f)
Chris@16:     {
Chris@16:         return result_of::BOOST_FUSION_FOLD_NAME<Seq,State const,F>::call(
Chris@16:             state,
Chris@16:             seq,
Chris@16:             f);
Chris@16:     }
Chris@16: 
Chris@16:     template<typename Seq, typename State, typename F>
Chris@101:     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:     inline typename result_of::BOOST_FUSION_FOLD_NAME<
Chris@16:         Seq const
Chris@16:       , State const
Chris@16:       , F
Chris@16:     >::type
Chris@16:     BOOST_FUSION_FOLD_NAME(Seq const& seq, State const& state, F f)
Chris@16:     {
Chris@16:         return result_of::BOOST_FUSION_FOLD_NAME<Seq const,State const,F>::call(
Chris@16:             state,
Chris@16:             seq,
Chris@16:             f);
Chris@16:     }
Chris@16: 
Chris@16:     template<typename Seq, typename State, typename F>
Chris@101:     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:     inline typename result_of::BOOST_FUSION_FOLD_NAME<
Chris@16:         Seq
Chris@16:       , State const
Chris@16:       , F
Chris@16:     >::type
Chris@16:     BOOST_FUSION_FOLD_NAME(Seq& seq, State& state, F f)
Chris@16:     {
Chris@16:         return result_of::BOOST_FUSION_FOLD_NAME<Seq,State,F>::call(
Chris@16:             state,
Chris@16:             seq,
Chris@16:             f);
Chris@16:     }
Chris@16: 
Chris@16:     template<typename Seq, typename State, typename F>
Chris@101:     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:     inline typename result_of::BOOST_FUSION_FOLD_NAME<
Chris@16:         Seq const
Chris@16:       , State const
Chris@16:       , F
Chris@16:     >::type
Chris@16:     BOOST_FUSION_FOLD_NAME(Seq const& seq, State& state, F f)
Chris@16:     {
Chris@16:         return result_of::BOOST_FUSION_FOLD_NAME<Seq const,State,F>::call(
Chris@16:             state,
Chris@16:             seq,
Chris@16:             f);
Chris@16:     }
Chris@16: }}
Chris@16: 
Chris@16: #undef BOOST_FUSION_FOLD_NAME
Chris@16: #undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION
Chris@16: #undef BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION
Chris@16: #undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM
Chris@16: #undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM
Chris@16: #undef BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM
Chris@16: #undef BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM