ceph/src/boost/libs/phoenix/include/boost/phoenix/core/v2_eval.hpp

   1 /*=============================================================================
   2     Copyright (c) 2011 Thomas Heller
   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 #ifndef BOOST_PHOENIX_CORE_V2_EVAL_HPP
   8 #define BOOST_PHOENIX_CORE_V2_EVAL_HPP
   9
  10 #include <boost/phoenix/core/limits.hpp>
  11 #include <boost/phoenix/core/environment.hpp>
  12 #include <boost/phoenix/core/is_actor.hpp>
  13 #include <boost/phoenix/core/meta_grammar.hpp>
  14 #include <boost/phoenix/core/terminal_fwd.hpp>
  15 #include <boost/phoenix/support/vector.hpp>
  16 #include <boost/proto/transform/fold.hpp>
  17 #include <boost/proto/transform/lazy.hpp>
  18
  19 namespace boost { namespace phoenix
  20 {
  21     struct v2_eval
  22         : proto::callable
  23     {
  24         template <typename Sig>
  25         struct result;
  26
  27         template <typename This, typename Eval, typename Env>
  28         struct result<This(Eval, Env)>
  29             : Eval::template result<typename proto::detail::uncvref<Env>::type>
  30         {};
  31
  32         template <typename This, typename Eval, typename Env>
  33         struct result<This(Eval &, Env)>
  34             : Eval::template result<typename proto::detail::uncvref<Env>::type>
  35         {};
  36
  37         template <typename This, typename Eval, typename Env>
  38         struct result<This(Eval const &, Env)>
  39             : Eval::template result<typename proto::detail::uncvref<Env>::type>
  40         {};
  41
  42         template <typename Eval, typename Env>
  43         typename result<v2_eval(Eval const&, Env)>::type
  44         operator()(Eval const & e, Env const & env) const
  45         {
  46             return e.eval(env);
  47         }
  48     };
  49 }}
  50
  51 #endif