log/expressions/keyword_fwd.hpp

0001 /*
0002  *          Copyright Andrey Semashev 2007 - 2015.
0003  * Distributed under the Boost Software License, Version 1.0.
0004  *    (See accompanying file LICENSE_1_0.txt or copy at
0005  *          http://www.boost.org/LICENSE_1_0.txt)
0006  */
0007 /*!
0008  * \file   keyword_fwd.hpp
0009  * \author Andrey Semashev
0010  * \date   29.01.2012
0011  *
0012  * The header contains attribute keyword forward declaration.
0013  */
0014
0015 #ifndef BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_
0016 #define BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_
0017
0018 #include <boost/log/detail/config.hpp>
0019
0020 #ifdef BOOST_HAS_PRAGMA_ONCE
0021 #pragma once
0022 #endif
0023
0024 namespace boost {
0025
0026 #ifndef BOOST_LOG_DOXYGEN_PASS
0027
0028 namespace phoenix {
0029
0030 template< typename >
0031 struct actor;
0032
0033 } // namespace phoenix
0034
0035 #endif // BOOST_LOG_DOXYGEN_PASS
0036
0037 BOOST_LOG_OPEN_NAMESPACE
0038
0039 namespace expressions {
0040
0041 /*!
0042  * \brief This class implements an expression template keyword
0043  */
0044 template< typename DescriptorT, template< typename > class ActorT = phoenix::actor >
0045 struct attribute_keyword;
0046
0047 } // namespace expressions
0048
0049 BOOST_LOG_CLOSE_NAMESPACE // namespace log
0050
0051 } // namespace boost
0052
0053 #endif // BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_