/Src/Dependencies/Boost/boost/mpl/aux_/preprocessed/bcc_pre590/iter_fold_if_impl.hpp

  1
  2// Copyright Aleksey Gurtovoy 2001-2004
  3// Copyright David Abrahams 2001-2002
  4//
  5// Distributed under the Boost Software License, Version 1.0. 
  6// (See accompanying file LICENSE_1_0.txt or copy at 
  7// http://www.boost.org/LICENSE_1_0.txt)
  8//
  9
 10// *Preprocessed* version of the main "iter_fold_if_impl.hpp" header
 11// -- DO NOT modify by hand!
 12
 13namespace boost { namespace mpl { namespace aux {
 14
 15template< typename Iterator, typename State >
 16struct iter_fold_if_null_step
 17{
 18    typedef State state;
 19    typedef Iterator iterator;
 20};
 21
 22template< bool >
 23struct iter_fold_if_step_impl
 24{
 25    template<
 26          typename Iterator
 27        , typename State
 28        , typename StateOp
 29        , typename IteratorOp
 30        >
 31    struct result_
 32    {
 33        typedef typename apply2< StateOp,State,Iterator >::type state;
 34        typedef typename IteratorOp::type iterator;
 35    };
 36};
 37
 38template<>
 39struct iter_fold_if_step_impl<false>
 40{
 41    template<
 42          typename Iterator
 43        , typename State
 44        , typename StateOp
 45        , typename IteratorOp
 46        >
 47    struct result_
 48    {
 49        typedef State state;
 50        typedef Iterator iterator;
 51    };
 52};
 53
 54template<
 55      typename Iterator
 56    , typename State
 57    , typename ForwardOp
 58    , typename Predicate
 59    >
 60struct iter_fold_if_forward_step
 61{
 62    typedef typename apply2< Predicate,State,Iterator >::type not_last;
 63    typedef typename iter_fold_if_step_impl<
 64          BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value
 65        >::template result_< Iterator,State,ForwardOp, mpl::next<Iterator> > impl_;
 66
 67    typedef typename impl_::state state;
 68    typedef typename impl_::iterator iterator;
 69};
 70
 71template<
 72      typename Iterator
 73    , typename State
 74    , typename BackwardOp
 75    , typename Predicate
 76    >
 77struct iter_fold_if_backward_step
 78{
 79    typedef typename apply2< Predicate,State,Iterator >::type not_last;
 80    typedef typename iter_fold_if_step_impl<
 81          BOOST_MPL_AUX_MSVC_VALUE_WKND(not_last)::value
 82        >::template result_< Iterator,State,BackwardOp, identity<Iterator> > impl_;
 83
 84    typedef typename impl_::state state;
 85    typedef typename impl_::iterator iterator;
 86};
 87
 88template<
 89      typename Iterator
 90    , typename State
 91    , typename ForwardOp
 92    , typename ForwardPredicate
 93    , typename BackwardOp
 94    , typename BackwardPredicate
 95    >
 96struct iter_fold_if_impl
 97{
 98 private:
 99    typedef iter_fold_if_null_step< Iterator,State > forward_step0;
100    typedef iter_fold_if_forward_step< typename forward_step0::iterator, typename forward_step0::state, ForwardOp, ForwardPredicate > forward_step1;
101    typedef iter_fold_if_forward_step< typename forward_step1::iterator, typename forward_step1::state, ForwardOp, ForwardPredicate > forward_step2;
102    typedef iter_fold_if_forward_step< typename forward_step2::iterator, typename forward_step2::state, ForwardOp, ForwardPredicate > forward_step3;
103    typedef iter_fold_if_forward_step< typename forward_step3::iterator, typename forward_step3::state, ForwardOp, ForwardPredicate > forward_step4;
104    
105
106    typedef typename if_<
107          typename forward_step4::not_last
108        , iter_fold_if_impl<
109              typename forward_step4::iterator
110            , typename forward_step4::state
111            , ForwardOp
112            , ForwardPredicate
113            , BackwardOp
114            , BackwardPredicate
115            >
116        , iter_fold_if_null_step<
117              typename forward_step4::iterator
118            , typename forward_step4::state
119            >
120        >::type backward_step4;
121
122    typedef iter_fold_if_backward_step< typename forward_step3::iterator, typename backward_step4::state, BackwardOp, BackwardPredicate > backward_step3;
123    typedef iter_fold_if_backward_step< typename forward_step2::iterator, typename backward_step3::state, BackwardOp, BackwardPredicate > backward_step2;
124    typedef iter_fold_if_backward_step< typename forward_step1::iterator, typename backward_step2::state, BackwardOp, BackwardPredicate > backward_step1;
125    typedef iter_fold_if_backward_step< typename forward_step0::iterator, typename backward_step1::state, BackwardOp, BackwardPredicate > backward_step0;
126    
127
128 public:
129    typedef typename backward_step0::state state;
130    typedef typename backward_step4::iterator iterator;
131};
132
133}}}