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72 lines
2.3 KiB
72 lines
2.3 KiB
3 years ago
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/*=============================================================================
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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/fusion/support/config.hpp>
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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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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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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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inline 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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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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inline 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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