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Diffstat (limited to '3rdParty/Boost/src/boost/mpl/aux_/iter_fold_if_impl.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/mpl/aux_/iter_fold_if_impl.hpp | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/mpl/aux_/iter_fold_if_impl.hpp b/3rdParty/Boost/src/boost/mpl/aux_/iter_fold_if_impl.hpp new file mode 100644 index 0000000..e7c47ea --- /dev/null +++ b/3rdParty/Boost/src/boost/mpl/aux_/iter_fold_if_impl.hpp @@ -0,0 +1,210 @@ + +#ifndef BOOST_MPL_AUX_ITER_FOLD_IF_IMPL_HPP_INCLUDED +#define BOOST_MPL_AUX_ITER_FOLD_IF_IMPL_HPP_INCLUDED + +// Copyright Aleksey Gurtovoy 2001-2004 +// Copyright David Abrahams 2001-2002 +// +// 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: iter_fold_if_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ +// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ +// $Revision: 49267 $ + +#if !defined(BOOST_MPL_PREPROCESSING_MODE) +# include <boost/mpl/identity.hpp> +# include <boost/mpl/next.hpp> +# include <boost/mpl/if.hpp> +# include <boost/mpl/apply.hpp> +# include <boost/mpl/aux_/value_wknd.hpp> +#endif + +#include <boost/mpl/aux_/config/use_preprocessed.hpp> + +#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ + && !defined(BOOST_MPL_PREPROCESSING_MODE) + +# define BOOST_MPL_PREPROCESSED_HEADER iter_fold_if_impl.hpp +# include <boost/mpl/aux_/include_preprocessed.hpp> + +#else + +# include <boost/mpl/limits/unrolling.hpp> +# include <boost/preprocessor/arithmetic/sub.hpp> +# include <boost/preprocessor/repeat.hpp> +# include <boost/preprocessor/inc.hpp> +# include <boost/preprocessor/dec.hpp> +# include <boost/preprocessor/cat.hpp> + +namespace boost { namespace mpl { namespace aux { + +template< typename Iterator, typename State > +struct iter_fold_if_null_step +{ + typedef State state; + typedef Iterator iterator; +}; + +template< bool > +struct iter_fold_if_step_impl +{ + template< + typename Iterator + , typename State + , typename StateOp + , typename IteratorOp + > + struct result_ + { + typedef typename apply2<StateOp,State,Iterator>::type state; + typedef typename IteratorOp::type iterator; + }; +}; + +template<> +struct iter_fold_if_step_impl<false> +{ + template< + typename Iterator + , typename State + , typename StateOp + , typename IteratorOp + > + struct result_ + { + typedef State state; + typedef Iterator iterator; + }; +}; + +// agurt, 25/jun/02: MSVC 6.5 workaround, had to get rid of inheritance +// here and in 'iter_fold_if_backward_step', because sometimes it interfered +// with the "early template instantiation bug" in _really_ ugly ways +template< + typename Iterator + , typename State + , typename ForwardOp + , typename Predicate + > +struct iter_fold_if_forward_step +{ + typedef typename apply2<Predicate,State,Iterator>::type not_last; + typedef typename iter_fold_if_step_impl< + BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value + >::template result_< Iterator,State,ForwardOp,mpl::next<Iterator> > impl_; + + typedef typename impl_::state state; + typedef typename impl_::iterator iterator; +}; + +template< + typename Iterator + , typename State + , typename BackwardOp + , typename Predicate + > +struct iter_fold_if_backward_step +{ + typedef typename apply2<Predicate,State,Iterator>::type not_last; + typedef typename iter_fold_if_step_impl< + BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value + >::template result_< Iterator,State,BackwardOp,identity<Iterator> > impl_; + + typedef typename impl_::state state; + typedef typename impl_::iterator iterator; +}; + + +// local macros, #undef-ined at the end of the header + +# define AUX_ITER_FOLD_FORWARD_STEP(unused, i, unused2) \ + typedef iter_fold_if_forward_step< \ + typename BOOST_PP_CAT(forward_step,i)::iterator \ + , typename BOOST_PP_CAT(forward_step,i)::state \ + , ForwardOp \ + , ForwardPredicate \ + > BOOST_PP_CAT(forward_step, BOOST_PP_INC(i)); \ + /**/ + +# define AUX_ITER_FOLD_BACKWARD_STEP_FUNC(i) \ + typedef iter_fold_if_backward_step< \ + typename BOOST_PP_CAT(forward_step,BOOST_PP_DEC(i))::iterator \ + , typename BOOST_PP_CAT(backward_step,i)::state \ + , BackwardOp \ + , BackwardPredicate \ + > BOOST_PP_CAT(backward_step,BOOST_PP_DEC(i)); \ + /**/ + +# define AUX_ITER_FOLD_BACKWARD_STEP(unused, i, unused2) \ + AUX_ITER_FOLD_BACKWARD_STEP_FUNC( \ + BOOST_PP_SUB_D(1,BOOST_MPL_LIMIT_UNROLLING,i) \ + ) \ + /**/ + +# define AUX_LAST_FORWARD_STEP \ + BOOST_PP_CAT(forward_step, BOOST_MPL_LIMIT_UNROLLING) \ + /**/ + +# define AUX_LAST_BACKWARD_STEP \ + BOOST_PP_CAT(backward_step, BOOST_MPL_LIMIT_UNROLLING) \ + /**/ + +template< + typename Iterator + , typename State + , typename ForwardOp + , typename ForwardPredicate + , typename BackwardOp + , typename BackwardPredicate + > +struct iter_fold_if_impl +{ + private: + typedef iter_fold_if_null_step<Iterator,State> forward_step0; + BOOST_PP_REPEAT( + BOOST_MPL_LIMIT_UNROLLING + , AUX_ITER_FOLD_FORWARD_STEP + , unused + ) + + typedef typename if_< + typename AUX_LAST_FORWARD_STEP::not_last + , iter_fold_if_impl< + typename AUX_LAST_FORWARD_STEP::iterator + , typename AUX_LAST_FORWARD_STEP::state + , ForwardOp + , ForwardPredicate + , BackwardOp + , BackwardPredicate + > + , iter_fold_if_null_step< + typename AUX_LAST_FORWARD_STEP::iterator + , typename AUX_LAST_FORWARD_STEP::state + > + >::type AUX_LAST_BACKWARD_STEP; + + BOOST_PP_REPEAT( + BOOST_MPL_LIMIT_UNROLLING + , AUX_ITER_FOLD_BACKWARD_STEP + , unused + ) + + public: + typedef typename backward_step0::state state; + typedef typename AUX_LAST_BACKWARD_STEP::iterator iterator; +}; + +# undef AUX_LAST_BACKWARD_STEP +# undef AUX_LAST_FORWARD_STEP +# undef AUX_ITER_FOLD_BACKWARD_STEP +# undef AUX_ITER_FOLD_BACKWARD_STEP_FUNC +# undef AUX_ITER_FOLD_FORWARD_STEP + +}}} + +#endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS +#endif // BOOST_MPL_AUX_ITER_FOLD_IF_IMPL_HPP_INCLUDED |