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   as_action.hpp
Chris@16:  * \author Andrey Semashev
Chris@16:  * \date   30.03.2008
Chris@16:  *
Chris@16:  * This header contains function object adapter for compatibility with Boost.Spirit actions interface requirements.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_LOG_UTILITY_FUNCTIONAL_AS_ACTION_HPP_INCLUDED_
Chris@16: #define BOOST_LOG_UTILITY_FUNCTIONAL_AS_ACTION_HPP_INCLUDED_
Chris@16: 
Chris@16: #include <boost/log/detail/config.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: //! Function object adapter for Boost.Spirit actions
Chris@16: template< typename FunT >
Chris@16: struct as_action_adapter
Chris@16: {
Chris@16:     typedef typename FunT::result_type result_type;
Chris@16: 
Chris@16:     BOOST_DEFAULTED_FUNCTION(as_action_adapter(), {})
Chris@16:     explicit as_action_adapter(FunT const& fun) : m_fun(fun) {}
Chris@16: 
Chris@16:     template< typename AttributeT, typename ContextT >
Chris@16:     result_type operator() (AttributeT const& attr, ContextT const& ctx, bool& pass) const
Chris@16:     {
Chris@16:         return m_fun(attr);
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     FunT m_fun;
Chris@16: };
Chris@16: 
Chris@16: template< typename FunT >
Chris@16: BOOST_FORCEINLINE as_action_adapter< FunT > as_action(FunT const& fun)
Chris@16: {
Chris@16:     return as_action_adapter< FunT >(fun);
Chris@16: }
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_UTILITY_FUNCTIONAL_AS_ACTION_HPP_INCLUDED_