| /* |
| * Copyright Andrey Semashev 2007 - 2015. |
| * 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) |
| */ |
| /*! |
| * \file attr_fwd.hpp |
| * \author Andrey Semashev |
| * \date 21.07.2012 |
| * |
| * The header contains forward declaration of a generic attribute placeholder in template expressions. |
| */ |
| |
| #ifndef BOOST_LOG_EXPRESSIONS_ATTR_FWD_HPP_INCLUDED_ |
| #define BOOST_LOG_EXPRESSIONS_ATTR_FWD_HPP_INCLUDED_ |
| |
| #include <boost/log/detail/config.hpp> |
| #include <boost/log/attributes/fallback_policy_fwd.hpp> |
| |
| #ifdef BOOST_HAS_PRAGMA_ONCE |
| #pragma once |
| #endif |
| |
| namespace boost { |
| |
| #ifndef BOOST_LOG_DOXYGEN_PASS |
| |
| namespace phoenix { |
| |
| template< typename > |
| struct actor; |
| |
| } // namespace phoenix |
| |
| #endif |
| |
| BOOST_LOG_OPEN_NAMESPACE |
| |
| namespace expressions { |
| |
| /*! |
| * An attribute value extraction terminal |
| */ |
| template< |
| typename T, |
| typename FallbackPolicyT = fallback_to_none, |
| typename TagT = void |
| > |
| class attribute_terminal; |
| |
| /*! |
| * An attribute value extraction terminal actor |
| */ |
| template< |
| typename T, |
| typename FallbackPolicyT = fallback_to_none, |
| typename TagT = void, |
| template< typename > class ActorT = phoenix::actor |
| > |
| class attribute_actor; |
| |
| } // namespace expressions |
| |
| BOOST_LOG_CLOSE_NAMESPACE // namespace log |
| |
| } // namespace boost |
| |
| #endif // BOOST_LOG_EXPRESSIONS_ATTR_FWD_HPP_INCLUDED_ |