ceph/src/boost/libs/phoenix/include/boost/phoenix/core/visit_each.hpp

   1 /*==============================================================================
   2     Copyright (c) 2005-2010 Joel de Guzman
   3     Copyright (c) 2010 Thomas Heller
   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 #ifndef BOOST_PHOENIX_CORE_VISIT_EACH_HPP
   9 #define BOOST_PHOENIX_CORE_VISIT_EACH_HPP
  10
  11 #include <boost/phoenix/core/limits.hpp>
  12 #include <boost/fusion/algorithm/iteration/for_each.hpp>
  13 #include <boost/visit_each.hpp>
  14
  15 namespace boost { namespace phoenix
  16 {
  17     template <typename> struct actor;
  18
  19     namespace detail
  20     {
  21         template <typename Visitor>
  22         struct visit_each_impl
  23         {
  24             Visitor& visitor;
  25             visit_each_impl(Visitor& visitor_ ) : visitor(visitor_) {}
  26
  27             template <typename T>
  28             void operator()(T const& t) const
  29             {
  30                 using boost::visit_each;
  31                 visit_each(visitor, t);
  32             }
  33         };
  34     }
  35
  36     template <typename Visitor, typename Expr>
  37     inline void visit_each(Visitor& visitor, actor<Expr> const& a, long)
  38     {
  39         fusion::for_each(a, detail::visit_each_impl<Visitor>(visitor));
  40     }
  41
  42     template <typename Visitor, typename Expr>
  43     inline void visit_each(Visitor& visitor, actor<Expr> const& a)
  44     {
  45         fusion::for_each(a, detail::visit_each_impl<Visitor>(visitor));
  46     }
  47 }}
  48
  49 #endif