Chris@102: /*
Chris@102:  *          Copyright Andrey Semashev 2007 - 2015.
Chris@102:  * Distributed under the Boost Software License, Version 1.0.
Chris@102:  *    (See accompanying file LICENSE_1_0.txt or copy at
Chris@102:  *          http://www.boost.org/LICENSE_1_0.txt)
Chris@102:  */
Chris@102: /*!
Chris@102:  * \file   copy_cv.hpp
Chris@102:  * \author Andrey Semashev
Chris@102:  * \date   16.03.2014
Chris@102:  *
Chris@102:  * The header defines \c copy_cv type trait which copies const/volatile qualifiers from one type to another
Chris@102:  */
Chris@102: 
Chris@102: #ifndef BOOST_LOG_DETAIL_COPY_CV_HPP_INCLUDED_
Chris@102: #define BOOST_LOG_DETAIL_COPY_CV_HPP_INCLUDED_
Chris@102: 
Chris@102: #include <boost/log/detail/config.hpp>
Chris@102: #include <boost/log/detail/header.hpp>
Chris@102: 
Chris@102: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@102: #pragma once
Chris@102: #endif
Chris@102: 
Chris@102: namespace boost {
Chris@102: 
Chris@102: BOOST_LOG_OPEN_NAMESPACE
Chris@102: 
Chris@102: namespace aux {
Chris@102: 
Chris@102: //! The type trait copies top level const/volatile qualifiers from \c FromT to \c ToT
Chris@102: template< typename FromT, typename ToT >
Chris@102: struct copy_cv
Chris@102: {
Chris@102:     typedef ToT type;
Chris@102: };
Chris@102: 
Chris@102: template< typename FromT, typename ToT >
Chris@102: struct copy_cv< const FromT, ToT >
Chris@102: {
Chris@102:     typedef const ToT type;
Chris@102: };
Chris@102: 
Chris@102: template< typename FromT, typename ToT >
Chris@102: struct copy_cv< volatile FromT, ToT >
Chris@102: {
Chris@102:     typedef volatile ToT type;
Chris@102: };
Chris@102: 
Chris@102: template< typename FromT, typename ToT >
Chris@102: struct copy_cv< const volatile FromT, ToT >
Chris@102: {
Chris@102:     typedef const volatile ToT type;
Chris@102: };
Chris@102: 
Chris@102: } // namespace aux
Chris@102: 
Chris@102: BOOST_LOG_CLOSE_NAMESPACE // namespace log
Chris@102: 
Chris@102: } // namespace boost
Chris@102: 
Chris@102: #include <boost/log/detail/footer.hpp>
Chris@102: 
Chris@102: #endif // BOOST_LOG_DETAIL_COPY_CV_HPP_INCLUDED_