You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
366 lines
8.7 KiB
C++
366 lines
8.7 KiB
C++
|
|
// NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION
|
|
|
|
#if !defined(BOOST_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.
|
|
|
|
// $Id$
|
|
// $Date$
|
|
// $Revision$
|
|
|
|
# include <boost/mpl/limits/unrolling.hpp>
|
|
# include <boost/mpl/aux_/preprocessor/repeat.hpp>
|
|
# include <boost/mpl/aux_/config/workaround.hpp>
|
|
# include <boost/mpl/aux_/config/ctps.hpp>
|
|
# include <boost/mpl/aux_/nttp_decl.hpp>
|
|
# include <boost/mpl/aux_/config/eti.hpp>
|
|
|
|
# include <boost/preprocessor/iterate.hpp>
|
|
# include <boost/preprocessor/dec.hpp>
|
|
# include <boost/preprocessor/cat.hpp>
|
|
|
|
// local macros, #undef-ined at the end of the header
|
|
|
|
# define AUX778076_ITER_FOLD_STEP(unused, i, unused2) \
|
|
typedef typename apply2< \
|
|
ForwardOp \
|
|
, BOOST_PP_CAT(state,i) \
|
|
, AUX778076_FOLD_IMPL_OP(BOOST_PP_CAT(iter,i)) \
|
|
>::type BOOST_PP_CAT(state,BOOST_PP_INC(i)); \
|
|
typedef typename mpl::next<BOOST_PP_CAT(iter,i)>::type \
|
|
BOOST_PP_CAT(iter,BOOST_PP_INC(i)); \
|
|
/**/
|
|
|
|
# define AUX778076_FOLD_IMPL_NAME \
|
|
BOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_impl) \
|
|
/**/
|
|
|
|
# define AUX778076_FOLD_CHUNK_NAME \
|
|
BOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_chunk) \
|
|
/**/
|
|
|
|
namespace boost { namespace mpl { namespace aux {
|
|
|
|
/// forward declaration
|
|
template<
|
|
BOOST_MPL_AUX_NTTP_DECL(int, N)
|
|
, typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME;
|
|
|
|
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
|
|
|
|
# if !BOOST_WORKAROUND(__BORLANDC__, < 0x600)
|
|
|
|
# define BOOST_PP_ITERATION_PARAMS_1 \
|
|
(3,(0, BOOST_MPL_LIMIT_UNROLLING, <boost/mpl/aux_/fold_impl_body.hpp>))
|
|
# include BOOST_PP_ITERATE()
|
|
|
|
// implementation for N that exceeds BOOST_MPL_LIMIT_UNROLLING
|
|
template<
|
|
BOOST_MPL_AUX_NTTP_DECL(int, N)
|
|
, typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME
|
|
{
|
|
typedef AUX778076_FOLD_IMPL_NAME<
|
|
BOOST_MPL_LIMIT_UNROLLING
|
|
, First
|
|
, Last
|
|
, State
|
|
, ForwardOp
|
|
> chunk_;
|
|
|
|
typedef AUX778076_FOLD_IMPL_NAME<
|
|
( (N - BOOST_MPL_LIMIT_UNROLLING) < 0 ? 0 : N - BOOST_MPL_LIMIT_UNROLLING )
|
|
, typename chunk_::iterator
|
|
, Last
|
|
, typename chunk_::state
|
|
, ForwardOp
|
|
> res_;
|
|
|
|
typedef typename res_::state state;
|
|
typedef typename res_::iterator iterator;
|
|
};
|
|
|
|
// fallback implementation for sequences of unknown size
|
|
template<
|
|
typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME<-1,First,Last,State,ForwardOp>
|
|
: AUX778076_FOLD_IMPL_NAME<
|
|
-1
|
|
, typename mpl::next<First>::type
|
|
, Last
|
|
, typename apply2<ForwardOp,State,AUX778076_FOLD_IMPL_OP(First)>::type
|
|
, ForwardOp
|
|
>
|
|
{
|
|
};
|
|
|
|
template<
|
|
typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME<-1,Last,Last,State,ForwardOp>
|
|
{
|
|
typedef State state;
|
|
typedef Last iterator;
|
|
};
|
|
|
|
# else // BOOST_WORKAROUND(__BORLANDC__, < 0x600)
|
|
|
|
// Borland have some serious problems with the unrolled version, so
|
|
// we always use a basic implementation
|
|
template<
|
|
BOOST_MPL_AUX_NTTP_DECL(int, N)
|
|
, typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME
|
|
{
|
|
typedef AUX778076_FOLD_IMPL_NAME<
|
|
-1
|
|
, typename mpl::next<First>::type
|
|
, Last
|
|
, typename apply2<ForwardOp,State,AUX778076_FOLD_IMPL_OP(First)>::type
|
|
, ForwardOp
|
|
> res_;
|
|
|
|
typedef typename res_::state state;
|
|
typedef typename res_::iterator iterator;
|
|
typedef state type;
|
|
};
|
|
|
|
template<
|
|
BOOST_MPL_AUX_NTTP_DECL(int, N)
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME<N,Last,Last,State,ForwardOp >
|
|
{
|
|
typedef State state;
|
|
typedef Last iterator;
|
|
typedef state type;
|
|
};
|
|
|
|
# endif // BOOST_WORKAROUND(__BORLANDC__, < 0x600)
|
|
|
|
#else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
|
|
template< BOOST_MPL_AUX_NTTP_DECL(int, N) >
|
|
struct AUX778076_FOLD_CHUNK_NAME;
|
|
|
|
# define BOOST_PP_ITERATION_PARAMS_1 \
|
|
(3,(0, BOOST_MPL_LIMIT_UNROLLING, <boost/mpl/aux_/fold_impl_body.hpp>))
|
|
# include BOOST_PP_ITERATE()
|
|
|
|
// implementation for N that exceeds BOOST_MPL_LIMIT_UNROLLING
|
|
template< BOOST_MPL_AUX_NTTP_DECL(int, N) >
|
|
struct AUX778076_FOLD_CHUNK_NAME
|
|
{
|
|
template<
|
|
typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct result_
|
|
{
|
|
typedef AUX778076_FOLD_IMPL_NAME<
|
|
BOOST_MPL_LIMIT_UNROLLING
|
|
, First
|
|
, Last
|
|
, State
|
|
, ForwardOp
|
|
> chunk_;
|
|
|
|
typedef AUX778076_FOLD_IMPL_NAME<
|
|
( (N - BOOST_MPL_LIMIT_UNROLLING) < 0 ? 0 : N - BOOST_MPL_LIMIT_UNROLLING )
|
|
, typename chunk_::iterator
|
|
, Last
|
|
, typename chunk_::state
|
|
, ForwardOp
|
|
> res_;
|
|
|
|
typedef typename res_::state state;
|
|
typedef typename res_::iterator iterator;
|
|
};
|
|
};
|
|
|
|
// fallback implementation for sequences of unknown size
|
|
template<
|
|
typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct BOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_step);
|
|
|
|
template<
|
|
typename Last
|
|
, typename State
|
|
>
|
|
struct BOOST_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 ForwardOp
|
|
>
|
|
struct result_
|
|
{
|
|
typedef typename if_<
|
|
typename is_same<First,Last>::type
|
|
, BOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_null_step)<Last,State>
|
|
, BOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_step)<First,Last,State,ForwardOp>
|
|
>::type res_;
|
|
|
|
typedef typename res_::state state;
|
|
typedef typename res_::iterator iterator;
|
|
};
|
|
|
|
#if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG)
|
|
/// ETI workaround
|
|
template<> struct result_<int,int,int,int>
|
|
{
|
|
typedef int state;
|
|
typedef int iterator;
|
|
};
|
|
#endif
|
|
};
|
|
|
|
template<
|
|
typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct BOOST_PP_CAT(AUX778076_FOLD_IMPL_NAME_PREFIX,_step)
|
|
{
|
|
// can't inherit here - it breaks MSVC 7.0
|
|
typedef AUX778076_FOLD_CHUNK_NAME<-1>::template result_<
|
|
typename mpl::next<First>::type
|
|
, Last
|
|
, typename apply2<ForwardOp,State,AUX778076_FOLD_IMPL_OP(First)>::type
|
|
, ForwardOp
|
|
> chunk_;
|
|
|
|
typedef typename chunk_::state state;
|
|
typedef typename chunk_::iterator iterator;
|
|
};
|
|
|
|
template<
|
|
BOOST_MPL_AUX_NTTP_DECL(int, N)
|
|
, typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME
|
|
: AUX778076_FOLD_CHUNK_NAME<N>
|
|
::template result_<First,Last,State,ForwardOp>
|
|
{
|
|
};
|
|
|
|
#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
|
|
}}}
|
|
|
|
# undef AUX778076_FOLD_IMPL_NAME
|
|
# undef AUX778076_FOLD_CHUNK_NAME
|
|
# undef AUX778076_ITER_FOLD_STEP
|
|
|
|
#undef AUX778076_FOLD_IMPL_OP
|
|
#undef AUX778076_FOLD_IMPL_NAME_PREFIX
|
|
|
|
///// iteration
|
|
|
|
#else
|
|
|
|
# define n_ BOOST_PP_FRAME_ITERATION(1)
|
|
|
|
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
|
|
|
|
template<
|
|
typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct AUX778076_FOLD_IMPL_NAME<n_,First,Last,State,ForwardOp>
|
|
{
|
|
typedef First iter0;
|
|
typedef State state0;
|
|
|
|
BOOST_MPL_PP_REPEAT(n_, AUX778076_ITER_FOLD_STEP, unused)
|
|
|
|
typedef BOOST_PP_CAT(state,n_) state;
|
|
typedef BOOST_PP_CAT(iter,n_) iterator;
|
|
};
|
|
|
|
#else
|
|
|
|
template<> struct AUX778076_FOLD_CHUNK_NAME<n_>
|
|
{
|
|
template<
|
|
typename First
|
|
, typename Last
|
|
, typename State
|
|
, typename ForwardOp
|
|
>
|
|
struct result_
|
|
{
|
|
typedef First iter0;
|
|
typedef State state0;
|
|
|
|
BOOST_MPL_PP_REPEAT(n_, AUX778076_ITER_FOLD_STEP, unused)
|
|
|
|
typedef BOOST_PP_CAT(state,n_) state;
|
|
typedef BOOST_PP_CAT(iter,n_) iterator;
|
|
};
|
|
|
|
#if defined(BOOST_MPL_CFG_MSVC_60_ETI_BUG)
|
|
/// ETI workaround
|
|
template<> struct result_<int,int,int,int>
|
|
{
|
|
typedef int state;
|
|
typedef int iterator;
|
|
};
|
|
#endif
|
|
};
|
|
|
|
#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
|
|
|
|
# undef n_
|
|
|
|
#endif // BOOST_PP_IS_ITERATING
|