boost/log/attributes/value_visitation_fwd.hpp
/* * 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 value_visitation_fwd.hpp * \author Andrey Semashev * \date 01.03.2008 * * The header contains forward declaration of convenience tools to apply visitors to an attribute value * in the view. */ #ifndef BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_ #define BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_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 { BOOST_LOG_OPEN_NAMESPACE /*! * \brief The class represents attribute value visitation result */ class visitation_result; /*! * \brief Generic attribute value visitor invoker */ template< typename T, typename FallbackPolicyT = fallback_to_none > class value_visitor_invoker; BOOST_LOG_CLOSE_NAMESPACE // namespace log } // namespace boost #endif // BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_