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/*
* Copyright Andrey Semashev 2007 - 2014.
* 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 native_typeof.hpp
* \author Andrey Semashev
* \date 08.03.2009
*
* 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_NATIVE_TYPEOF_HPP_INCLUDED_
#define BOOST_LOG_DETAIL_NATIVE_TYPEOF_HPP_INCLUDED_
#include <boost/log/detail/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif
#if !defined(BOOST_NO_CXX11_DECLTYPE)
namespace boost {
BOOST_LOG_OPEN_NAMESPACE
namespace aux {
template< typename T >
T get_root_type(T const&);
} // namespace aux
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#define BOOST_LOG_TYPEOF(x) decltype(::boost::log::aux::get_root_type(x))
#elif defined(__COMO__) && defined(__GNUG__)
#define BOOST_LOG_TYPEOF(x) typeof(x)
#elif defined(__GNUC__) || defined(__MWERKS__)
#define BOOST_LOG_TYPEOF(x) __typeof__(x)
#endif
#if !defined(BOOST_NO_CXX11_AUTO_DECLARATIONS)
#define BOOST_LOG_AUTO(var, expr) auto var = (expr)
#endif
#if !defined(BOOST_LOG_AUTO) && defined(BOOST_LOG_TYPEOF)
#define BOOST_LOG_AUTO(var, expr) BOOST_LOG_TYPEOF((expr)) var = (expr)
#endif
#endif // BOOST_LOG_DETAIL_NATIVE_TYPEOF_HPP_INCLUDED_
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