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134 lines
4.2 KiB
134 lines
4.2 KiB
3 years ago
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// Copyright Aleksey Gurtovoy 2001-2004
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// Copyright David Abrahams 2001-2002
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Preprocessed version of "boost/mpl/aux_/iter_fold_if_impl.hpp" header
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// -- DO NOT modify by hand!
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namespace boost { namespace mpl { 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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}}}
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