ceph/src/boost/boost/fusion/algorithm/query/find_if.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   3     Copyright (c) 2011 Eric Niebler
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #if !defined(FUSION_FIND_IF_05052005_1108)
   9 #define FUSION_FIND_IF_05052005_1108
  10
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/fusion/algorithm/query/find_if_fwd.hpp>
  13 #include <boost/fusion/algorithm/query/detail/find_if.hpp>
  14 #include <boost/fusion/algorithm/query/detail/segmented_find_if.hpp>
  15 #include <boost/fusion/iterator/value_of.hpp>
  16 #include <boost/fusion/support/is_segmented.hpp>
  17 #include <boost/utility/enable_if.hpp>
  18 #include <boost/type_traits/is_const.hpp>
  19 #include <boost/mpl/bind.hpp>
  20 #include <boost/mpl/lambda.hpp>
  21 #include <boost/mpl/placeholders.hpp>
  22 #include <boost/mpl/quote.hpp>
  23
  24 namespace boost { namespace fusion
  25 {
  26     namespace result_of
  27     {
  28         template <typename Sequence, typename Pred>
  29         struct find_if
  30           : mpl::if_<
  31                 traits::is_segmented<Sequence>
  32               , detail::result_of_segmented_find_if<Sequence, Pred>
  33               , detail::result_of_find_if<
  34                     Sequence,
  35                     mpl::bind1<
  36                         typename mpl::lambda<Pred>::type
  37                       , mpl::bind1<mpl::quote1<value_of>, mpl::_1>
  38                     >
  39                 >
  40             >::type
  41         {};
  42     }
  43
  44     template <typename Pred, typename Sequence>
  45     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  46     inline typename
  47         lazy_disable_if<
  48             is_const<Sequence>
  49           , result_of::find_if<Sequence, Pred>
  50         >::type
  51     find_if(Sequence& seq)
  52     {
  53         typedef typename result_of::find_if<Sequence, Pred>::filter filter;
  54         return filter::call(seq);
  55     }
  56
  57     template <typename Pred, typename Sequence>
  58     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  59     inline typename result_of::find_if<Sequence const, Pred>::type const
  60     find_if(Sequence const& seq)
  61     {
  62         typedef typename result_of::find_if<Sequence const, Pred>::filter filter;
  63         return filter::call(seq);
  64     }
  65 }}
  66
  67 #endif