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Viewing changes to boost/boost/mpl/aux_/preprocessed/bcc551/iter_fold_if_impl.hpp

  • Committer: Bazaar Package Importer
  • Author(s): LaMont Jones
  • Date: 2004-08-24 07:25:04 UTC
  • Revision ID: james.westby@ubuntu.com-20040824072504-zf993vnevvisdsvb
Tags: upstream-0.9.1
Import upstream version 0.9.1

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boost/boost/mpl/aux_/preprocessed/bcc551/iter_fold_if_impl.hpp
 
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// preprocessed version of 'boost/mpl/aux_/iter_fold_if_impl.hpp' header
 
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// see the original for copyright information
 
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namespace boost {
 
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namespace mpl {
 
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namespace aux {
 
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template< typename Iterator, typename State >
 
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struct iter_fold_if_null_step
 
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{
 
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    typedef State state;
 
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    typedef Iterator iterator;
 
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};
 
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template< bool >
 
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struct iter_fold_if_step_impl
 
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{
 
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    template<
 
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          typename Iterator
 
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        , typename State
 
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        , typename StateOp
 
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        , typename IteratorOp
 
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        >
 
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    struct result_
 
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    {
 
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        typedef typename apply2< StateOp,State,Iterator >::type state;
 
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        typedef typename IteratorOp::type iterator;
 
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    };
 
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};
 
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template<>
 
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struct iter_fold_if_step_impl<false>
 
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{
 
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    template<
 
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          typename Iterator
 
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        , typename State
 
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        , typename StateOp
 
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        , typename IteratorOp
 
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        >
 
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    struct result_
 
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    {
 
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        typedef State state;
 
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        typedef Iterator iterator;
 
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    };
 
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};
 
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template<
 
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      typename Iterator
 
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    , typename State
 
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    , typename ForwardOp
 
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    , typename Predicate
 
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    >
 
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struct iter_fold_if_forward_step
 
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{
 
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    typedef typename apply2< Predicate,State,Iterator >::type not_last;
 
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    typedef typename iter_fold_if_step_impl<
 
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          BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value
 
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        >::template result_< Iterator, State, ForwardOp, mpl::next< Iterator> > impl_;
 
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    typedef typename impl_::state state;
 
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    typedef typename impl_::iterator iterator;
 
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};
 
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template<
 
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      typename Iterator
 
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    , typename State
 
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    , typename BackwardOp
 
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    , typename Predicate
 
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    >
 
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struct iter_fold_if_backward_step
 
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{
 
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    typedef typename apply2< Predicate,State,Iterator >::type not_last;
 
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    typedef typename iter_fold_if_step_impl<
 
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          BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value
 
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        >::template result_< Iterator,State,BackwardOp,identity<Iterator> > impl_;
 
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    typedef typename impl_::state state;
 
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    typedef typename impl_::iterator iterator;
 
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};
 
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template<
 
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      typename Iterator
 
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    , typename State
 
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    , typename ForwardOp
 
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    , typename ForwardPredicate
 
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    , typename BackwardOp
 
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    , typename BackwardPredicate
 
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    >
 
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struct iter_fold_if_impl
 
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{
 
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 private:
 
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    typedef iter_fold_if_null_step< Iterator,State > forward_step0;
 
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    typedef iter_fold_if_forward_step< typename forward_step0::iterator, typename forward_step0::state, ForwardOp, ForwardPredicate > forward_step1;
 
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    typedef iter_fold_if_forward_step< typename forward_step1::iterator, typename forward_step1::state, ForwardOp, ForwardPredicate > forward_step2;
 
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    typedef iter_fold_if_forward_step< typename forward_step2::iterator, typename forward_step2::state, ForwardOp, ForwardPredicate > forward_step3;
 
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    typedef iter_fold_if_forward_step< typename forward_step3::iterator, typename forward_step3::state, ForwardOp, ForwardPredicate > forward_step4;
 
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    typedef typename if_<
 
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          typename forward_step4::not_last
 
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        , iter_fold_if_impl<
 
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              typename forward_step4::iterator
 
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            , typename forward_step4::state
 
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            , ForwardOp
 
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            , ForwardPredicate
 
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            , BackwardOp
 
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            , BackwardPredicate
 
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            >
 
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        , iter_fold_if_null_step<
 
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              typename forward_step4::iterator
 
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            , typename forward_step4::state
 
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            >
 
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        >::type backward_step4;
 
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    typedef iter_fold_if_backward_step< typename forward_step3::iterator, typename backward_step4::state, BackwardOp, BackwardPredicate > backward_step3;
 
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    typedef iter_fold_if_backward_step< typename forward_step2::iterator, typename backward_step3::state, BackwardOp, BackwardPredicate > backward_step2;
 
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    typedef iter_fold_if_backward_step< typename forward_step1::iterator, typename backward_step2::state, BackwardOp, BackwardPredicate > backward_step1;
 
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    typedef iter_fold_if_backward_step< typename forward_step0::iterator, typename backward_step1::state, BackwardOp, BackwardPredicate > backward_step0;
 
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 public:
 
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    typedef typename backward_step0::state state;
 
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    typedef typename backward_step4::iterator iterator;
 
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};
 
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} // namespace aux
 
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} // namespace mpl
 
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} // namespace boost
 
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