boost/log/expressions/attr_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   attr_fwd.hpp
 * \author Andrey Semashev
 * \date   21.07.2012
 *
 * The header contains forward declaration of a generic attribute placeholder in template expressions.
 */
#ifndef BOOST_LOG_EXPRESSIONS_ATTR_FWD_HPP_INCLUDED_
#define BOOST_LOG_EXPRESSIONS_ATTR_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 {
#ifndef BOOST_LOG_DOXYGEN_PASS
namespace phoenix {
template< typename >
struct actor;
} // namespace phoenix
#endif
BOOST_LOG_OPEN_NAMESPACE
namespace expressions {
/*!
 * An attribute value extraction terminal
 */
template<
    typename T,
    typename FallbackPolicyT = fallback_to_none,
    typename TagT = void
>
class attribute_terminal;
/*!
 * An attribute value extraction terminal actor
 */
template<
    typename T,
    typename FallbackPolicyT = fallback_to_none,
    typename TagT = void,
    template< typename > class ActorT = phoenix::actor
>
class attribute_actor;
} // namespace expressions
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#endif // BOOST_LOG_EXPRESSIONS_ATTR_FWD_HPP_INCLUDED_