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