boost/log/detail/sfinae_tools.hpp

/*
 *             Copyright Andrey Semashev 2016.
 * 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   sfinae_tools.hpp
 * \author Andrey Semashev
 * \date   23.02.2016
 *
 * \brief  This header is the Boost.Log library implementation, see the library documentation
 *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
 */
#ifndef BOOST_LOG_DETAIL_SFINAE_TOOLS_HPP_INCLUDED_
#define BOOST_LOG_DETAIL_SFINAE_TOOLS_HPP_INCLUDED_
#include <boost/log/detail/config.hpp>
#include <boost/core/enable_if.hpp>
#include <boost/log/detail/header.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif
namespace boost {
BOOST_LOG_OPEN_NAMESPACE
namespace aux {
//! A distinct type that can be used as a fake argument type in constructors filtered by SFINAE
struct sfinae_dummy {};
} // namespace aux
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#include <boost/log/detail/footer.hpp>
#endif // BOOST_LOG_DETAIL_SFINAE_TOOLS_HPP_INCLUDED_