| |
| // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION! |
| |
| #if !defined(NDNBOOST_PP_IS_ITERATING) |
| |
| // Copyright Aleksey Gurtovoy 2000-2004 |
| // |
| // 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) |
| // |
| // See http://www.boost.org/libs/mpl for documentation. |
| |
| // $Id: reverse_fold_impl_body.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
| // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $ |
| // $Revision: 49267 $ |
| |
| # include <ndnboost/mpl/limits/unrolling.hpp> |
| # include <ndnboost/mpl/aux_/preprocessor/repeat.hpp> |
| # include <ndnboost/mpl/aux_/config/ctps.hpp> |
| # include <ndnboost/mpl/aux_/nttp_decl.hpp> |
| |
| # include <ndnboost/preprocessor/arithmetic/sub.hpp> |
| # include <ndnboost/preprocessor/iterate.hpp> |
| # include <ndnboost/preprocessor/dec.hpp> |
| # include <ndnboost/preprocessor/inc.hpp> |
| # include <ndnboost/preprocessor/cat.hpp> |
| |
| // local macros, #undef-ined at the end of the header |
| |
| # define AUX778076_ITER_FOLD_FORWARD_STEP(unused, n_, unused2) \ |
| typedef typename apply2< \ |
| ForwardOp \ |
| , NDNBOOST_PP_CAT(fwd_state,n_) \ |
| , AUX778076_FOLD_IMPL_OP(NDNBOOST_PP_CAT(iter,n_)) \ |
| >::type NDNBOOST_PP_CAT(fwd_state,NDNBOOST_PP_INC(n_)); \ |
| typedef typename mpl::next<NDNBOOST_PP_CAT(iter,n_)>::type \ |
| NDNBOOST_PP_CAT(iter,NDNBOOST_PP_INC(n_)); \ |
| /**/ |
| |
| # define AUX778076_ITER_FOLD_BACKWARD_STEP_FUNC(n_) \ |
| typedef typename apply2< \ |
| BackwardOp \ |
| , NDNBOOST_PP_CAT(bkwd_state,n_) \ |
| , AUX778076_FOLD_IMPL_OP(NDNBOOST_PP_CAT(iter,NDNBOOST_PP_DEC(n_))) \ |
| >::type NDNBOOST_PP_CAT(bkwd_state,NDNBOOST_PP_DEC(n_)); \ |
| /**/ |
| |
| # define AUX778076_ITER_FOLD_BACKWARD_STEP(unused, n_, j) \ |
| AUX778076_ITER_FOLD_BACKWARD_STEP_FUNC( \ |
| NDNBOOST_PP_SUB_D(1,j,n_) \ |
| ) \ |
| /**/ |
| |
| # define AUX778076_FIRST_BACKWARD_STATE_TYPEDEF(n_) \ |
| typedef typename nested_chunk::state NDNBOOST_PP_CAT(bkwd_state,n_); |
| /**/ |
| |
| # define AUX778076_FOLD_IMPL_NAME \ |
| NDNBOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_impl) \ |
| /**/ |
| |
| # define AUX778076_FOLD_CHUNK_NAME \ |
| NDNBOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_chunk) \ |
| /**/ |
| |
| namespace ndnboost { namespace mpl { namespace aux { |
| |
| /// forward declaration |
| template< |
| NDNBOOST_MPL_AUX_NTTP_DECL(long, N) |
| , typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct AUX778076_FOLD_IMPL_NAME; |
| |
| #if !defined(NDNBOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \ |
| && !defined(NDNBOOST_MPL_CFG_NO_NONTYPE_TEMPLATE_PARTIAL_SPEC) |
| |
| # define NDNBOOST_PP_ITERATION_PARAMS_1 \ |
| (3,(0, NDNBOOST_MPL_LIMIT_UNROLLING, <ndnboost/mpl/aux_/reverse_fold_impl_body.hpp>)) |
| # include NDNBOOST_PP_ITERATE() |
| |
| // implementation for N that exceeds NDNBOOST_MPL_LIMIT_UNROLLING |
| template< |
| NDNBOOST_MPL_AUX_NTTP_DECL(long, N) |
| , typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct AUX778076_FOLD_IMPL_NAME |
| { |
| typedef First iter0; |
| typedef State fwd_state0; |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| NDNBOOST_MPL_LIMIT_UNROLLING |
| , AUX778076_ITER_FOLD_FORWARD_STEP |
| , unused |
| ) |
| |
| typedef AUX778076_FOLD_IMPL_NAME< |
| ( (N - NDNBOOST_MPL_LIMIT_UNROLLING) < 0 ? 0 : N - NDNBOOST_MPL_LIMIT_UNROLLING ) |
| , NDNBOOST_PP_CAT(iter,NDNBOOST_MPL_LIMIT_UNROLLING) |
| , Last |
| , NDNBOOST_PP_CAT(fwd_state,NDNBOOST_MPL_LIMIT_UNROLLING) |
| , BackwardOp |
| , ForwardOp |
| > nested_chunk; |
| |
| AUX778076_FIRST_BACKWARD_STATE_TYPEDEF(NDNBOOST_MPL_LIMIT_UNROLLING) |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| NDNBOOST_MPL_LIMIT_UNROLLING |
| , AUX778076_ITER_FOLD_BACKWARD_STEP |
| , NDNBOOST_MPL_LIMIT_UNROLLING |
| ) |
| |
| typedef bkwd_state0 state; |
| typedef typename nested_chunk::iterator iterator; |
| }; |
| |
| // fallback implementation for sequences of unknown size |
| template< |
| typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct AUX778076_FOLD_IMPL_NAME<-1,First,Last,State,BackwardOp,ForwardOp> |
| { |
| typedef AUX778076_FOLD_IMPL_NAME< |
| -1 |
| , typename mpl::next<First>::type |
| , Last |
| , typename apply2<ForwardOp,State,AUX778076_FOLD_IMPL_OP(First)>::type |
| , BackwardOp |
| , ForwardOp |
| > nested_step; |
| |
| typedef typename apply2< |
| BackwardOp |
| , typename nested_step::state |
| , AUX778076_FOLD_IMPL_OP(First) |
| >::type state; |
| |
| typedef typename nested_step::iterator iterator; |
| }; |
| |
| template< |
| typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct AUX778076_FOLD_IMPL_NAME<-1,Last,Last,State,BackwardOp,ForwardOp> |
| { |
| typedef State state; |
| typedef Last iterator; |
| }; |
| |
| #else // NDNBOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| template< NDNBOOST_MPL_AUX_NTTP_DECL(long, N) > |
| struct AUX778076_FOLD_CHUNK_NAME; |
| |
| # define NDNBOOST_PP_ITERATION_PARAMS_1 \ |
| (3,(0, NDNBOOST_MPL_LIMIT_UNROLLING, <ndnboost/mpl/aux_/reverse_fold_impl_body.hpp>)) |
| # include NDNBOOST_PP_ITERATE() |
| |
| // implementation for N that exceeds NDNBOOST_MPL_LIMIT_UNROLLING |
| template< NDNBOOST_MPL_AUX_NTTP_DECL(long, N) > |
| struct AUX778076_FOLD_CHUNK_NAME |
| { |
| template< |
| typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct result_ |
| { |
| typedef First iter0; |
| typedef State fwd_state0; |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| NDNBOOST_MPL_LIMIT_UNROLLING |
| , AUX778076_ITER_FOLD_FORWARD_STEP |
| , unused |
| ) |
| |
| typedef AUX778076_FOLD_IMPL_NAME< |
| ( (N - NDNBOOST_MPL_LIMIT_UNROLLING) < 0 ? 0 : N - NDNBOOST_MPL_LIMIT_UNROLLING ) |
| , NDNBOOST_PP_CAT(iter,NDNBOOST_MPL_LIMIT_UNROLLING) |
| , Last |
| , NDNBOOST_PP_CAT(fwd_state,NDNBOOST_MPL_LIMIT_UNROLLING) |
| , BackwardOp |
| , ForwardOp |
| > nested_chunk; |
| |
| AUX778076_FIRST_BACKWARD_STATE_TYPEDEF(NDNBOOST_MPL_LIMIT_UNROLLING) |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| NDNBOOST_MPL_LIMIT_UNROLLING |
| , AUX778076_ITER_FOLD_BACKWARD_STEP |
| , NDNBOOST_MPL_LIMIT_UNROLLING |
| ) |
| |
| typedef bkwd_state0 state; |
| typedef typename nested_chunk::iterator iterator; |
| }; |
| }; |
| |
| // fallback implementation for sequences of unknown size |
| template< |
| typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct NDNBOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_step); |
| |
| template< |
| typename Last |
| , typename State |
| > |
| struct NDNBOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_null_step) |
| { |
| typedef Last iterator; |
| typedef State state; |
| }; |
| |
| template<> |
| struct AUX778076_FOLD_CHUNK_NAME<-1> |
| { |
| template< |
| typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct result_ |
| { |
| typedef typename if_< |
| typename is_same<First,Last>::type |
| , NDNBOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_null_step)<Last,State> |
| , NDNBOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_step)<First,Last,State,BackwardOp,ForwardOp> |
| >::type res_; |
| |
| typedef typename res_::state state; |
| typedef typename res_::iterator iterator; |
| }; |
| |
| #if defined(NDNBOOST_MPL_CFG_MSVC_60_ETI_BUG) |
| /// ETI workaround |
| template<> struct result_<int,int,int,int,int> |
| { |
| typedef int state; |
| typedef int iterator; |
| }; |
| #endif |
| }; |
| |
| template< |
| typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct NDNBOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_step) |
| { |
| typedef AUX778076_FOLD_CHUNK_NAME<-1>::template result_< |
| typename mpl::next<First>::type |
| , Last |
| , typename apply2<ForwardOp,State,AUX778076_FOLD_IMPL_OP(First)>::type |
| , BackwardOp |
| , ForwardOp |
| > nested_step; |
| |
| typedef typename apply2< |
| BackwardOp |
| , typename nested_step::state |
| , AUX778076_FOLD_IMPL_OP(First) |
| >::type state; |
| |
| typedef typename nested_step::iterator iterator; |
| }; |
| |
| template< |
| NDNBOOST_MPL_AUX_NTTP_DECL(long, N) |
| , typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct AUX778076_FOLD_IMPL_NAME |
| : AUX778076_FOLD_CHUNK_NAME<N> |
| ::template result_<First,Last,State,BackwardOp,ForwardOp> |
| { |
| }; |
| |
| #endif // NDNBOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| }}} |
| |
| # undef AUX778076_FIRST_BACKWARD_STATE_TYPEDEF |
| # undef AUX778076_ITER_FOLD_BACKWARD_STEP |
| # undef AUX778076_ITER_FOLD_BACKWARD_STEP_FUNC |
| # undef AUX778076_ITER_FOLD_FORWARD_STEP |
| |
| #undef AUX778076_FOLD_IMPL_OP |
| #undef AUX778076_FOLD_IMPL_NAME_PREFIX |
| |
| ///// iteration |
| |
| #else |
| |
| # define n_ NDNBOOST_PP_FRAME_ITERATION(1) |
| |
| #if !defined(NDNBOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) \ |
| && !defined(NDNBOOST_MPL_CFG_NO_NONTYPE_TEMPLATE_PARTIAL_SPEC) |
| |
| template< |
| typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct AUX778076_FOLD_IMPL_NAME<n_,First,Last,State,BackwardOp,ForwardOp> |
| { |
| typedef First iter0; |
| typedef State fwd_state0; |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| n_ |
| , AUX778076_ITER_FOLD_FORWARD_STEP |
| , unused |
| ) |
| |
| typedef NDNBOOST_PP_CAT(fwd_state,n_) NDNBOOST_PP_CAT(bkwd_state,n_); |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| n_ |
| , AUX778076_ITER_FOLD_BACKWARD_STEP |
| , n_ |
| ) |
| |
| typedef bkwd_state0 state; |
| typedef NDNBOOST_PP_CAT(iter,n_) iterator; |
| }; |
| |
| #else |
| |
| template<> struct AUX778076_FOLD_CHUNK_NAME<n_> |
| { |
| template< |
| typename First |
| , typename Last |
| , typename State |
| , typename BackwardOp |
| , typename ForwardOp |
| > |
| struct result_ |
| { |
| typedef First iter0; |
| typedef State fwd_state0; |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| n_ |
| , AUX778076_ITER_FOLD_FORWARD_STEP |
| , unused |
| ) |
| |
| typedef NDNBOOST_PP_CAT(fwd_state,n_) NDNBOOST_PP_CAT(bkwd_state,n_); |
| |
| NDNBOOST_MPL_PP_REPEAT( |
| n_ |
| , AUX778076_ITER_FOLD_BACKWARD_STEP |
| , n_ |
| ) |
| |
| typedef bkwd_state0 state; |
| typedef NDNBOOST_PP_CAT(iter,n_) iterator; |
| }; |
| |
| #if defined(NDNBOOST_MPL_CFG_MSVC_60_ETI_BUG) |
| /// ETI workaround |
| template<> struct result_<int,int,int,int,int> |
| { |
| typedef int state; |
| typedef int iterator; |
| }; |
| #endif |
| }; |
| |
| #endif // NDNBOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| # undef n_ |
| |
| #endif // NDNBOOST_PP_IS_ITERATING |