46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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* Copyright Andrey Semashev 2007 - 2013.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file value_visitation_fwd.hpp
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* \author Andrey Semashev
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* \date 01.03.2008
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*
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* The header contains forward declaration of convenience tools to apply visitors to an attribute value
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* in the view.
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*/
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#ifndef BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_
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#define BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_
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#include <boost/log/detail/config.hpp>
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#include <boost/log/attributes/fallback_policy_fwd.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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namespace boost {
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BOOST_LOG_OPEN_NAMESPACE
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/*!
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* \brief The class represents attribute value visitation result
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*/
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class visitation_result;
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/*!
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* \brief Generic attribute value visitor invoker
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*/
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template< typename T, typename FallbackPolicyT = fallback_to_none >
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class value_visitor_invoker;
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BOOST_LOG_CLOSE_NAMESPACE // namespace log
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} // namespace boost
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#endif // BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_
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