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Diffstat (limited to '3rdParty/Boost/src/boost/fusion/algorithm/iteration/detail/fold.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/fusion/algorithm/iteration/detail/fold.hpp | 462 |
1 files changed, 462 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/fusion/algorithm/iteration/detail/fold.hpp b/3rdParty/Boost/src/boost/fusion/algorithm/iteration/detail/fold.hpp new file mode 100644 index 0000000..174c4b1 --- /dev/null +++ b/3rdParty/Boost/src/boost/fusion/algorithm/iteration/detail/fold.hpp @@ -0,0 +1,462 @@ +/*============================================================================= + Copyright (c) 2001-2011 Joel de Guzman + Copyright (c) 2006 Dan Marsden + Copyright (c) 2009-2010 Christopher Schmidt + + 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) +==============================================================================*/ +#include <boost/preprocessor/cat.hpp> + +#ifdef BOOST_FUSION_REVERSE_FOLD +# ifdef BOOST_FUSION_ITER_FOLD +# define BOOST_FUSION_FOLD_NAME reverse_iter_fold +# else +# define BOOST_FUSION_FOLD_NAME reverse_fold +# endif + +# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION end +# define BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION prior +# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(IT) \ + typename fusion::result_of::prior<IT>::type +# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(IT) fusion::prior(IT) +#else +# ifdef BOOST_FUSION_ITER_FOLD +# define BOOST_FUSION_FOLD_NAME iter_fold +# else +# define BOOST_FUSION_FOLD_NAME fold +# endif + +# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION begin +# define BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION next +# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM(IT) IT +# define BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM(IT) IT +#endif +#ifdef BOOST_FUSION_ITER_FOLD +# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(IT) IT& +# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(IT) IT +#else +# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(IT) \ + typename fusion::result_of::deref<IT>::type +# define BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(IT) fusion::deref(IT) +#endif + +namespace boost { namespace fusion +{ + namespace detail + { + template<typename State, typename It, typename F> + struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state) + : boost::result_of< + F( + typename add_reference<typename add_const<State>::type>::type, + BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM(It)) + > + {}; + + template<typename Result,int N> + struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME) + { + template<typename State, typename It0, typename F> + static Result + call(State const& state,It0 const& it0,F f) + { + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It0 const + >::type + It1; + It1 it1 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0); + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It1 + >::type + It2; + It2 it2 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1); + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It2 + >::type + It3; + It3 it3 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it2); + + typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1; + State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)); + + typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State1,It1,F>::type State2; + State2 const state2=f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1)); + + typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State2,It2,F>::type State3; + State3 const state3=f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2)); + + return BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)< + Result + , N-4 + >::call( + f(state3,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it3)), + fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it3), + f); + } + }; + + template<typename Result> + struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,3> + { + template<typename State, typename It0, typename F> + static Result + call(State const& state,It0 const& it0,F f) + { + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It0 const + >::type + It1; + It1 it1 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0); + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It1 + >::type + It2; + It2 it2 = fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it1); + + typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1; + State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)); + + typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State1,It1,F>::type State2; + State2 const state2=f(state1,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it1)); + + return f(state2,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it2)); + } + }; + + template<typename Result> + struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,2> + { + template<typename State, typename It0, typename F> + static Result + call(State const& state,It0 const& it0,F f) + { + typedef typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)<State,It0,F>::type State1; + State1 const state1=f(state,BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)); + + return f( + state1, + BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM( + fusion::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION(it0))); + } + }; + + template<typename Result> + struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,1> + { + template<typename State, typename It0, typename F> + static Result + call(State const& state,It0 const& it0,F f) + { + return f(state, + BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM(it0)); + } + }; + + template<typename Result> + struct BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)<Result,0> + { + template<typename State, typename It0, typename F> + static Result + call(State const& state,It0 const& it0, F) + { + return static_cast<Result>(state); + } + }; + + template<typename StateRef, typename It0, typename F, int N> + struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME) + { + typedef typename + BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + StateRef + , It0 const + , F + >::type + rest1; + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It0 const + >::type + it1; + typedef typename + BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + rest1 + , it1 + , F + >::type + rest2; + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<it1>::type + it2; + typedef typename + BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + rest2 + , it2 + , F + >::type + rest3; + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION<it2>::type + it3; + + typedef typename + BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)< + typename BOOST_PP_CAT( + BOOST_FUSION_FOLD_NAME, _lvalue_state)< + rest3 + , it3 + , F + >::type + , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + it3 + >::type + , F + , N-4 + >::type + type; + }; + + template<typename StateRef, typename It0, typename F> + struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)< + StateRef + , It0 + , F + , 3 + > + { + typedef typename + BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + StateRef + , It0 const + , F + >::type + rest1; + typedef typename + result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It0 const + >::type + it1; + + typedef typename + BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + typename BOOST_PP_CAT( + BOOST_FUSION_FOLD_NAME, _lvalue_state)< + rest1 + , it1 + , F + >::type + , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + it1 const + >::type const + , F + >::type + type; + }; + + template<typename StateRef, typename It0, typename F> + struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)< + StateRef + , It0 + , F + , 2 + > + : BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + typename BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + StateRef + , It0 const + , F + >::type + , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It0 const + >::type const + , F + > + {}; + + template<typename StateRef, typename It0, typename F> + struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)< + StateRef + , It0 + , F + , 1 + > + : BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME, _lvalue_state)< + StateRef + , It0 const + , F + > + {}; + + template<typename StateRef, typename It0, typename F> + struct BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)< + StateRef + , It0 + , F + , 0 + > + { + typedef StateRef type; + }; + + template<typename StateRef, typename It0, typename F, int SeqSize> + struct BOOST_PP_CAT(result_of_first_unrolled,BOOST_FUSION_FOLD_NAME) + { + typedef typename + BOOST_PP_CAT(result_of_unrolled_,BOOST_FUSION_FOLD_NAME)< + typename boost::result_of< + F( + StateRef, + BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM( + It0 const) + ) + >::type + , typename result_of::BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION< + It0 const + >::type + , F + , SeqSize-1 + >::type + type; + }; + + template<int SeqSize, typename StateRef, typename Seq, typename F> + struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl) + { + typedef typename + BOOST_PP_CAT( + result_of_first_unrolled,BOOST_FUSION_FOLD_NAME)< + StateRef + , BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM( + typename result_of::BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION<Seq>::type + ) + , F + , SeqSize + >::type + type; + + static type + call(StateRef state, Seq& seq, F f) + { + typedef + BOOST_PP_CAT(unrolled_,BOOST_FUSION_FOLD_NAME)< + type + , SeqSize + > + unrolled_impl; + + return unrolled_impl::call( + state, + BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM( + fusion::BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION(seq)), + f); + } + }; + + template<typename StateRef, typename Seq, typename F> + struct BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)<0,StateRef,Seq,F> + { + typedef StateRef type; + + static StateRef + call(StateRef state, Seq&, F) + { + return static_cast<StateRef>(state); + } + }; + + template<typename Seq, typename State, typename F, bool IsSegmented> + struct BOOST_PP_CAT(result_of_, BOOST_FUSION_FOLD_NAME) + : BOOST_PP_CAT(BOOST_FUSION_FOLD_NAME,_impl)< + result_of::size<Seq>::value + , typename add_reference< + typename add_const<State>::type + >::type + , Seq + , F + > + {}; + } + + namespace result_of + { + template<typename Seq, typename State, typename F> + struct BOOST_FUSION_FOLD_NAME + : detail::BOOST_PP_CAT(result_of_, BOOST_FUSION_FOLD_NAME)< + Seq + , State + , F + , traits::is_segmented<Seq>::type::value + > + {}; + } + + template<typename Seq, typename State, typename F> + inline typename result_of::BOOST_FUSION_FOLD_NAME< + Seq + , State const + , F + >::type + BOOST_FUSION_FOLD_NAME(Seq& seq, State const& state, F f) + { + return result_of::BOOST_FUSION_FOLD_NAME<Seq,State const,F>::call( + state, + seq, + f); + } + + template<typename Seq, typename State, typename F> + inline typename result_of::BOOST_FUSION_FOLD_NAME< + Seq const + , State const + , F + >::type + BOOST_FUSION_FOLD_NAME(Seq const& seq, State const& state, F f) + { + return result_of::BOOST_FUSION_FOLD_NAME<Seq const,State const,F>::call( + state, + seq, + f); + } + + template<typename Seq, typename State, typename F> + inline typename result_of::BOOST_FUSION_FOLD_NAME< + Seq + , State const + , F + >::type + BOOST_FUSION_FOLD_NAME(Seq& seq, State& state, F f) + { + return result_of::BOOST_FUSION_FOLD_NAME<Seq,State,F>::call( + state, + seq, + f); + } + + template<typename Seq, typename State, typename F> + inline typename result_of::BOOST_FUSION_FOLD_NAME< + Seq const + , State const + , F + >::type + BOOST_FUSION_FOLD_NAME(Seq const& seq, State& state, F f) + { + return result_of::BOOST_FUSION_FOLD_NAME<Seq const,State,F>::call( + state, + seq, + f); + } +}} + +#undef BOOST_FUSION_FOLD_NAME +#undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_FUNCTION +#undef BOOST_FUSION_FOLD_IMPL_NEXT_IT_FUNCTION +#undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_META_TRANSFORM +#undef BOOST_FUSION_FOLD_IMPL_FIRST_IT_TRANSFORM +#undef BOOST_FUSION_FOLD_IMPL_INVOKE_IT_META_TRANSFORM +#undef BOOST_FUSION_FOLD_IMPL_INVOKE_IT_TRANSFORM |