ceph/src/boost/boost/log/attributes/value_visitation_fwd.hpp

   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   value_visitation_fwd.hpp
   9  * \author Andrey Semashev
  10  * \date   01.03.2008
  11  *
  12  * The header contains forward declaration of convenience tools to apply visitors to an attribute value
  13  * in the view.
  14  */
  15
  16 #ifndef BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_
  17 #define BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_
  18
  19 #include <boost/log/detail/config.hpp>
  20 #include <boost/log/attributes/fallback_policy_fwd.hpp>
  21
  22 #ifdef BOOST_HAS_PRAGMA_ONCE
  23 #pragma once
  24 #endif
  25
  26 namespace boost {
  27
  28 BOOST_LOG_OPEN_NAMESPACE
  29
  30 /*!
  31  * \brief The class represents attribute value visitation result
  32  */
  33 class visitation_result;
  34
  35 /*!
  36  * \brief Generic attribute value visitor invoker
  37  */
  38 template< typename T, typename FallbackPolicyT = fallback_to_none >
  39 class value_visitor_invoker;
  40
  41 BOOST_LOG_CLOSE_NAMESPACE // namespace log
  42
  43 } // namespace boost
  44
  45 #endif // BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_