Swiftdiff options
Diffstat (limited to '3rdParty/Boost/src/boost/proto/transform/detail/fold_impl.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/proto/transform/detail/fold_impl.hpp | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/proto/transform/detail/fold_impl.hpp b/3rdParty/Boost/src/boost/proto/transform/detail/fold_impl.hpp new file mode 100644 index 0000000..d469fff --- /dev/null +++ b/3rdParty/Boost/src/boost/proto/transform/detail/fold_impl.hpp @@ -0,0 +1,143 @@ +#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES) + + #include <boost/proto/transform/detail/preprocessed/fold_impl.hpp> + +#elif !defined(BOOST_PP_IS_ITERATING) + + #define BOOST_PROTO_CHILD_N_TYPE(N) \ + BOOST_PP_CAT(proto_child, N) \ + /**/ + + #define BOOST_PROTO_FOLD_STATE_TYPE(Z, N, DATA) \ + typedef \ + typename when<_, Fun>::template impl< \ + typename result_of::child_c<Expr, N>::type \ + , BOOST_PP_CAT(state, N) \ + , Data \ + >::result_type \ + BOOST_PP_CAT(state, BOOST_PP_INC(N)); \ + /**/ + + #define BOOST_PROTO_FOLD_STATE(Z, N, DATA) \ + BOOST_PP_CAT(state, BOOST_PP_INC(N)) \ + BOOST_PP_CAT(s, BOOST_PP_INC(N)) \ + = typename when<_, Fun>::template impl< \ + typename result_of::child_c<Expr, N>::type \ + , BOOST_PP_CAT(state, N) \ + , Data \ + >()( \ + proto::child_c<N>(e) \ + , BOOST_PP_CAT(s, N) \ + , d \ + ); \ + /**/ + + #define BOOST_PROTO_REVERSE_FOLD_STATE_TYPE(Z, N, DATA) \ + typedef \ + typename when<_, Fun>::template impl< \ + typename result_of::child_c< \ + Expr \ + , BOOST_PP_SUB(DATA, BOOST_PP_INC(N)) \ + >::type \ + , BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, N)) \ + , Data \ + >::result_type \ + BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, BOOST_PP_INC(N))); \ + /**/ + + #define BOOST_PROTO_REVERSE_FOLD_STATE(Z, N, DATA) \ + BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, BOOST_PP_INC(N))) \ + BOOST_PP_CAT(s, BOOST_PP_SUB(DATA, BOOST_PP_INC(N))) \ + = typename when<_, Fun>::template impl< \ + typename result_of::child_c< \ + Expr \ + , BOOST_PP_SUB(DATA, BOOST_PP_INC(N)) \ + >::type \ + , BOOST_PP_CAT(state, BOOST_PP_SUB(DATA, N)) \ + , Data \ + >()( \ + proto::child_c<BOOST_PP_SUB(DATA, BOOST_PP_INC(N))>(e) \ + , BOOST_PP_CAT(s, BOOST_PP_SUB(DATA, N)) \ + , d \ + ); \ + /**/ + + #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) + #pragma wave option(preserve: 2, line: 0, output: "preprocessed/fold_impl.hpp") + #endif + + /////////////////////////////////////////////////////////////////////////////// + /// \file fold_impl.hpp + /// Contains definition of fold_impl<> and reverse_fold_impl<> templates. + // + // Copyright 2008 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(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) + #pragma wave option(preserve: 1) + #endif + + #define BOOST_PP_ITERATION_PARAMS_1 \ + (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/transform/detail/fold_impl.hpp>)) + #include BOOST_PP_ITERATE() + + #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES) + #pragma wave option(output: null) + #endif + + #undef BOOST_PROTO_REVERSE_FOLD_STATE + #undef BOOST_PROTO_REVERSE_FOLD_STATE_TYPE + #undef BOOST_PROTO_FOLD_STATE + #undef BOOST_PROTO_FOLD_STATE_TYPE + #undef BOOST_PROTO_CHILD_N_TYPE + +#else + + #define N BOOST_PP_ITERATION() + + template<typename State0, typename Fun, typename Expr, typename State, typename Data> + struct fold_impl<State0, Fun, Expr, State, Data, N> + : transform_impl<Expr, State, Data> + { + typedef typename when<_, State0>::template impl<Expr, State, Data>::result_type state0; + BOOST_PP_REPEAT(N, BOOST_PROTO_FOLD_STATE_TYPE, N) + typedef BOOST_PP_CAT(state, N) result_type; + + result_type operator ()( + typename fold_impl::expr_param e + , typename fold_impl::state_param s + , typename fold_impl::data_param d + ) const + { + state0 s0 = + typename when<_, State0>::template impl<Expr, State, Data>()(e, s, d); + BOOST_PP_REPEAT(N, BOOST_PROTO_FOLD_STATE, N) + return BOOST_PP_CAT(s, N); + } + }; + + template<typename State0, typename Fun, typename Expr, typename State, typename Data> + struct reverse_fold_impl<State0, Fun, Expr, State, Data, N> + : transform_impl<Expr, State, Data> + { + typedef typename when<_, State0>::template impl<Expr, State, Data>::result_type BOOST_PP_CAT(state, N); + BOOST_PP_REPEAT(N, BOOST_PROTO_REVERSE_FOLD_STATE_TYPE, N) + typedef state0 result_type; + + result_type operator ()( + typename reverse_fold_impl::expr_param e + , typename reverse_fold_impl::state_param s + , typename reverse_fold_impl::data_param d + ) const + { + BOOST_PP_CAT(state, N) BOOST_PP_CAT(s, N) = + typename when<_, State0>::template impl<Expr, State, Data>()(e, s, d); + BOOST_PP_REPEAT(N, BOOST_PROTO_REVERSE_FOLD_STATE, N) + return s0; + } + }; + + #undef N + +#endif |