| /*============================================================================= |
| Copyright (c) 2001-2007 Joel de Guzman |
| |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| ==============================================================================*/ |
| #ifndef PHOENIX_CORE_AS_ACTOR_HPP |
| #define PHOENIX_CORE_AS_ACTOR_HPP |
| |
| #include <boost/spirit/home/phoenix/core/actor.hpp> |
| |
| namespace boost { namespace phoenix |
| { |
| template <typename T> |
| struct as_actor_base; // defined in value.hpp |
| |
| template <typename Base> |
| struct as_actor_base<actor<Base> > |
| { |
| typedef Base type; |
| |
| static Base const& |
| convert(actor<Base> const& x) |
| { |
| return x; |
| } |
| }; |
| |
| template <> |
| struct as_actor_base<fusion::void_> |
| { |
| typedef fusion::void_ type; |
| struct error_attempting_to_convert_void_type_to_an_actor {}; |
| |
| static void |
| convert(error_attempting_to_convert_void_type_to_an_actor); |
| }; |
| |
| template <> |
| struct as_actor_base<void> |
| { |
| typedef void type; |
| struct error_attempting_to_convert_void_type_to_an_actor {}; |
| |
| static void |
| convert(error_attempting_to_convert_void_type_to_an_actor); |
| }; |
| |
| template <typename T> |
| struct as_actor |
| { |
| typedef actor<typename as_actor_base<T>::type> type; |
| |
| static type |
| convert(T const& x) |
| { |
| return as_actor_base<T>::convert(x); |
| } |
| }; |
| }} |
| |
| #endif |