| 1 | /*============================================================================= |
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| 2 | Copyright (c) 2001-2011 Joel de Guzman |
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| 3 | |
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| 4 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
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| 5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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| 6 | ==============================================================================*/ |
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| 7 | #if !defined(FUSION_FILTER_IF_07172005_0818) |
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| 8 | #define FUSION_FILTER_IF_07172005_0818 |
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| 9 | |
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| 10 | #include <boost/fusion/support/config.hpp> |
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| 11 | #include <boost/fusion/view/filter_view/filter_view.hpp> |
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| 12 | |
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| 13 | namespace boost { namespace fusion |
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| 14 | { |
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| 15 | namespace result_of |
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| 16 | { |
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| 17 | template <typename Sequence, typename Pred> |
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| 18 | struct filter_if |
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| 19 | { |
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| 20 | typedef filter_view<Sequence, Pred> type; |
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| 21 | }; |
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| 22 | } |
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| 23 | |
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| 24 | template <typename Pred, typename Sequence> |
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| 25 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
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| 26 | inline typename result_of::filter_if<Sequence const, Pred>::type |
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| 27 | filter_if(Sequence const& seq) |
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| 28 | { |
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| 29 | return filter_view<Sequence const, Pred>(seq); |
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| 30 | } |
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| 31 | }} |
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| 32 | |
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| 33 | #endif |
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| 34 | |
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| 35 | |
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