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
operator ()boost::phoenix::v2_eval44         operator()(Eval const & e, Env const & env) const
45         {
46             return e.eval(env);
47         }
48     };
49 }}
50 
51 #endif
52