ceph/src/boost/boost/fusion/algorithm/iteration/detail/segmented_for_each.hpp

   1 /*=============================================================================
   2     Copyright (c) 2011 Eric Niebler
   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(BOOST_FUSION_SEGMENTED_FOR_EACH_HPP_INCLUDED)
   8 #define BOOST_FUSION_SEGMENTED_FOR_EACH_HPP_INCLUDED
   9
  10 #include <boost/fusion/support/config.hpp>
  11 #include <boost/mpl/bool.hpp>
  12 #include <boost/fusion/support/void.hpp>
  13 #include <boost/fusion/algorithm/iteration/for_each_fwd.hpp>
  14 #include <boost/fusion/support/segmented_fold_until.hpp>
  15
  16 namespace boost { namespace fusion { namespace detail
  17 {
  18     template <typename Fun>
  19     struct segmented_for_each_fun
  20     {
  21         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  22         explicit segmented_for_each_fun(Fun& f)
  23           : fun(f)
  24         {}
  25
  26         Fun& fun;
  27
  28         template <typename Sequence, typename State, typename Context>
  29         struct apply
  30         {
  31             typedef void_ type;
  32             typedef mpl::true_ continue_type;
  33
  34             BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  35             static type call(Sequence& seq, State const&, Context const&, segmented_for_each_fun const& fun)
  36             {
  37                 fusion::for_each(seq, fun.fun);
  38                 return void_();
  39             }
  40         };
  41     };
  42
  43     template <typename Sequence, typename F>
  44     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  45     inline void
  46     for_each(Sequence& seq, F& f, mpl::true_) // segmented implementation
  47     {
  48         fusion::segmented_fold_until(seq, void_(), segmented_for_each_fun<F>(f));
  49     }
  50 }}}
  51
  52 #endif