1 /*
2  *          Copyright Andrey Semashev 2007 - 2015.
3  * Distributed under the Boost Software License, Version 1.0.
4  *    (See accompanying file LICENSE_1_0.txt or copy at
5  *          http://www.boost.org/LICENSE_1_0.txt)
6  */
7 /*!
8  * \file   keyword_fwd.hpp
9  * \author Andrey Semashev
10  * \date   29.01.2012
11  *
12  * The header contains attribute keyword forward declaration.
13  */
14 
15 #ifndef BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_
16 #define BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_
17 
18 #include <boost/log/detail/config.hpp>
19 
20 #ifdef BOOST_HAS_PRAGMA_ONCE
21 #pragma once
22 #endif
23 
24 namespace boost {
25 
26 #ifndef BOOST_LOG_DOXYGEN_PASS
27 
28 namespace phoenix {
29 
30 template< typename >
31 struct actor;
32 
33 } // namespace phoenix
34 
35 #endif // BOOST_LOG_DOXYGEN_PASS
36 
37 BOOST_LOG_OPEN_NAMESPACE
38 
39 namespace expressions {
40 
41 /*!
42  * \brief This class implements an expression template keyword
43  */
44 template< typename DescriptorT, template< typename > class ActorT = phoenix::actor >
45 struct attribute_keyword;
46 
47 } // namespace expressions
48 
49 BOOST_LOG_CLOSE_NAMESPACE // namespace log
50 
51 } // namespace boost
52 
53 #endif // BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_
54