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73 lines
2.4 KiB
73 lines
2.4 KiB
/*============================================================================= |
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Copyright (c) 2011 Eric Niebler |
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Distributed under the Boost Software License, Version 1.0. (See accompanying |
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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==============================================================================*/ |
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#if !defined(BOOST_FUSION_SEGMENTED_FOLD_UNTIL_HPP_INCLUDED) |
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#define BOOST_FUSION_SEGMENTED_FOLD_UNTIL_HPP_INCLUDED |
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#include <boost/type_traits/is_const.hpp> |
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#include <boost/utility/enable_if.hpp> |
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#include <boost/fusion/support/detail/segmented_fold_until_impl.hpp> |
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#include <boost/fusion/view/iterator_range.hpp> |
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#include <boost/fusion/sequence/intrinsic/begin.hpp> |
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#include <boost/fusion/sequence/intrinsic/end.hpp> |
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#include <boost/fusion/sequence/intrinsic/empty.hpp> |
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#include <boost/fusion/container/list/cons.hpp> |
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namespace boost { namespace fusion |
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{ |
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//auto segmented_fold_until(seq, state, fun) |
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//{ |
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// return first(segmented_fold_until_impl(seq, state, nil, fun)); |
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//} |
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namespace result_of |
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{ |
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template <typename Sequence, typename State, typename Fun> |
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struct segmented_fold_until |
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{ |
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typedef |
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detail::segmented_fold_until_impl< |
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Sequence |
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, State |
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, fusion::nil |
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, Fun |
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> |
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filter; |
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typedef |
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typename filter::type |
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type; |
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}; |
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} |
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template <typename Sequence, typename State, typename Fun> |
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typename |
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lazy_disable_if< |
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is_const<Sequence> |
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, result_of::segmented_fold_until<Sequence, State, Fun> |
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>::type |
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segmented_fold_until(Sequence& seq, State const& state, Fun const& fun) |
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{ |
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typedef |
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typename result_of::segmented_fold_until<Sequence, State, Fun>::filter |
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filter; |
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return filter::call(seq, state, fusion::nil(), fun); |
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} |
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template <typename Sequence, typename State, typename Fun> |
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typename result_of::segmented_fold_until<Sequence const, State, Fun>::type |
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segmented_fold_until(Sequence const& seq, State const& state, Fun const& fun) |
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{ |
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typedef |
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typename result_of::segmented_fold_until<Sequence const, State, Fun>::filter |
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filter; |
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return filter::call(seq, state, fusion::nil(), fun); |
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} |
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}} |
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#endif
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