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