ceph/src/boost/libs/fusion/include/boost/fusion/algorithm/transformation/filter_if.hpp

   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
  27     filter_if(Sequence const& seq)
  28     {
  29         return filter_view<Sequence const, Pred>(seq);
  30     }
  31 }}
  32
  33 #endif
  34