/*
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* Copyright Andrey Semashev 2007 - 2015.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file native_typeof.hpp
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* \author Andrey Semashev
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* \date 08.03.2009
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*
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* This header is the Boost.Log library implementation, see the library documentation
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* at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
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*/
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#ifndef BOOST_LOG_DETAIL_NATIVE_TYPEOF_HPP_INCLUDED_
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#define BOOST_LOG_DETAIL_NATIVE_TYPEOF_HPP_INCLUDED_
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#include <boost/log/detail/config.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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#if !defined(BOOST_NO_CXX11_DECLTYPE)
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namespace boost {
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BOOST_LOG_OPEN_NAMESPACE
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namespace aux {
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template< typename T >
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T get_root_type(T const&);
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} // namespace aux
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BOOST_LOG_CLOSE_NAMESPACE // namespace log
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} // namespace boost
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#define BOOST_LOG_TYPEOF(x) decltype(::boost::log::aux::get_root_type(x))
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#elif defined(__COMO__) && defined(__GNUG__)
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#define BOOST_LOG_TYPEOF(x) typeof(x)
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#elif defined(__GNUC__) || defined(__MWERKS__)
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#define BOOST_LOG_TYPEOF(x) __typeof__(x)
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#endif
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#if !defined(BOOST_NO_CXX11_AUTO_DECLARATIONS)
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#define BOOST_LOG_AUTO(var, expr) auto var = (expr)
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#endif
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#if !defined(BOOST_LOG_AUTO) && defined(BOOST_LOG_TYPEOF)
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#define BOOST_LOG_AUTO(var, expr) BOOST_LOG_TYPEOF((expr)) var = (expr)
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#endif
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#endif // BOOST_LOG_DETAIL_NATIVE_TYPEOF_HPP_INCLUDED_
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