| /* |
| * 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 deduce_char_type.hpp |
| * \author Andrey Semashev |
| * \date 17.11.2012 |
| * |
| * \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_DEDUCE_CHAR_TYPE_HPP_INCLUDED_ |
| #define BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_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 { |
| |
| template< typename T > |
| struct deduced_char_type; |
| |
| template< > |
| struct deduced_char_type< char > |
| { |
| typedef char type; |
| }; |
| |
| template< > |
| struct deduced_char_type< const char > |
| { |
| typedef char type; |
| }; |
| |
| template< > |
| struct deduced_char_type< wchar_t > |
| { |
| typedef wchar_t type; |
| }; |
| |
| template< > |
| struct deduced_char_type< const wchar_t > |
| { |
| typedef wchar_t type; |
| }; |
| |
| //! Auxiliary traits to detect character type from a string |
| template< typename RangeT > |
| struct deduce_char_type : |
| public deduced_char_type< typename RangeT::value_type > |
| { |
| }; |
| |
| template< typename T > |
| struct deduce_char_type< T* > : |
| public deduced_char_type< T > |
| { |
| }; |
| |
| template< typename T > |
| struct deduce_char_type< T* const > : |
| public deduced_char_type< T > |
| { |
| }; |
| |
| template< typename T, unsigned int CountV > |
| struct deduce_char_type< T[CountV] > : |
| public deduced_char_type< T > |
| { |
| }; |
| |
| template< typename T > |
| struct deduce_char_type< T& > : |
| public deduce_char_type< T > |
| { |
| }; |
| |
| #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) |
| |
| template< typename T > |
| struct deduce_char_type< T&& > : |
| public deduce_char_type< T > |
| { |
| }; |
| |
| #endif |
| |
| } // namespace aux |
| |
| BOOST_LOG_CLOSE_NAMESPACE // namespace log |
| |
| } // namespace boost |
| |
| #include <boost/log/detail/footer.hpp> |
| |
| #endif // BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_HPP_INCLUDED_ |