Chris@16: /*
Chris@101:  *          Copyright Andrey Semashev 2007 - 2015.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  *    (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  *          http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  */
Chris@16: /*!
Chris@16:  * \file   message.hpp
Chris@16:  * \author Andrey Semashev
Chris@16:  * \date   13.07.2012
Chris@16:  *
Chris@16:  * The header contains log message keyword declaration.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_LOG_EXPRESSIONS_MESSAGE_HPP_INCLUDED_
Chris@16: #define BOOST_LOG_EXPRESSIONS_MESSAGE_HPP_INCLUDED_
Chris@16: 
Chris@16: #include <string>
Chris@16: #include <boost/mpl/vector.hpp>
Chris@16: #include <boost/log/detail/config.hpp>
Chris@16: #include <boost/log/detail/default_attribute_names.hpp>
Chris@16: #include <boost/log/expressions/keyword.hpp>
Chris@16: #include <boost/log/expressions/is_keyword_descriptor.hpp>
Chris@16: #include <boost/log/attributes/attribute_name.hpp>
Chris@16: #include <boost/log/detail/header.hpp>
Chris@16: 
Chris@16: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: BOOST_LOG_OPEN_NAMESPACE
Chris@16: 
Chris@16: namespace expressions {
Chris@16: 
Chris@16: namespace tag {
Chris@16: 
Chris@16: /*!
Chris@16:  * Generic log message attribute descriptor.
Chris@16:  */
Chris@16: struct message :
Chris@16:     public keyword_descriptor
Chris@16: {
Chris@16:     // The attribute value type here is not essential since message attributes are not intended to be created via the keyword
Chris@16:     typedef void attribute_type;
Chris@16: 
Chris@16: #if defined(BOOST_LOG_USE_CHAR) && defined(BOOST_LOG_USE_WCHAR_T)
Chris@16:     typedef mpl::vector2< std::string, std::wstring > value_type;
Chris@16: #elif defined(BOOST_LOG_USE_CHAR)
Chris@16:     typedef std::string value_type;
Chris@16: #elif defined(BOOST_LOG_USE_WCHAR_T)
Chris@16:     typedef std::wstring value_type;
Chris@16: #endif
Chris@16: 
Chris@16:     static attribute_name get_name() { return boost::log::aux::default_attribute_names::message(); }
Chris@16: };
Chris@16: 
Chris@16: #if defined(BOOST_LOG_USE_CHAR)
Chris@16: /*!
Chris@16:  * Narrow character log message attribute descriptor.
Chris@16:  */
Chris@16: struct smessage :
Chris@16:     public keyword_descriptor
Chris@16: {
Chris@16:     // The attribute value type here is not essential since message attributes are not intended to be created via the keyword
Chris@16:     typedef void attribute_type;
Chris@16:     typedef std::string value_type;
Chris@16: 
Chris@16:     static attribute_name get_name() { return boost::log::aux::default_attribute_names::message(); }
Chris@16: };
Chris@16: #endif
Chris@16: 
Chris@16: #if defined(BOOST_LOG_USE_WCHAR_T)
Chris@16: /*!
Chris@16:  * Wide character log message attribute descriptor.
Chris@16:  */
Chris@16: struct wmessage :
Chris@16:     public keyword_descriptor
Chris@16: {
Chris@16:     // The attribute value type here is not essential since message attributes are not intended to be created via the keyword
Chris@16:     typedef void attribute_type;
Chris@16:     typedef std::wstring value_type;
Chris@16: 
Chris@16:     static attribute_name get_name() { return boost::log::aux::default_attribute_names::message(); }
Chris@16: };
Chris@16: #endif
Chris@16: 
Chris@16: } // namespace tag
Chris@16: 
Chris@16: /*!
Chris@16:  * Generic message keyword type.
Chris@16:  */
Chris@16: typedef attribute_keyword< tag::message > message_type;
Chris@16: /*!
Chris@16:  * Generic message keyword.
Chris@16:  */
Chris@16: const message_type message = {};
Chris@16: 
Chris@16: #if defined(BOOST_LOG_USE_CHAR)
Chris@16: /*!
Chris@16:  * Narrow message keyword type.
Chris@16:  */
Chris@16: typedef attribute_keyword< tag::smessage > smessage_type;
Chris@16: /*!
Chris@16:  * Narrow message keyword.
Chris@16:  */
Chris@16: const smessage_type smessage = {};
Chris@16: #endif
Chris@16: 
Chris@16: #if defined(BOOST_LOG_USE_WCHAR_T)
Chris@16: /*!
Chris@16:  * Wide message keyword type.
Chris@16:  */
Chris@16: typedef attribute_keyword< tag::wmessage > wmessage_type;
Chris@16: /*!
Chris@16:  * Wide message keyword.
Chris@16:  */
Chris@16: const wmessage_type wmessage = {};
Chris@16: #endif
Chris@16: 
Chris@16: } // namespace expressions
Chris@16: 
Chris@16: BOOST_LOG_CLOSE_NAMESPACE // namespace log
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/log/detail/footer.hpp>
Chris@16: 
Chris@16: #endif // BOOST_LOG_EXPRESSIONS_MESSAGE_HPP_INCLUDED_