boost/log/detail/copy_cv.hpp
/* * 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 copy_cv.hpp * \author Andrey Semashev * \date 16.03.2014 * * The header defines \c copy_cv type trait which copies const/volatile qualifiers from one type to another */ #ifndef BOOST_LOG_DETAIL_COPY_CV_HPP_INCLUDED_ #define BOOST_LOG_DETAIL_COPY_CV_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 namespace aux { //! The type trait copies top level const/volatile qualifiers from \c FromT to \c ToT template< typename FromT, typename ToT > struct copy_cv { typedef ToT type; }; template< typename FromT, typename ToT > struct copy_cv< const FromT, ToT > { typedef const ToT type; }; template< typename FromT, typename ToT > struct copy_cv< volatile FromT, ToT > { typedef volatile ToT type; }; template< typename FromT, typename ToT > struct copy_cv< const volatile FromT, ToT > { typedef const volatile ToT type; }; } // namespace aux BOOST_LOG_CLOSE_NAMESPACE // namespace log } // namespace boost #include <boost/log/detail/footer.hpp> #endif // BOOST_LOG_DETAIL_COPY_CV_HPP_INCLUDED_