1 /* 2 * Copyright Andrey Semashev 2007 - 2015. 3 * Distributed under the Boost Software License, Version 1.0. 4 * (See accompanying file LICENSE_1_0.txt or copy at 5 * http://www.boost.org/LICENSE_1_0.txt) 6 */ 7 /*! 8 * \file unique_identifier_name.hpp 9 * \author Andrey Semashev 10 * \date 30.04.2008 11 * 12 * The header contains \c BOOST_LOG_UNIQUE_IDENTIFIER_NAME macro definition. 13 */ 14 15 #ifndef BOOST_LOG_UTILITY_UNIQUE_IDENTIFIER_NAME_HPP_INCLUDED_ 16 #define BOOST_LOG_UTILITY_UNIQUE_IDENTIFIER_NAME_HPP_INCLUDED_ 17 18 #include <boost/preprocessor/cat.hpp> 19 #include <boost/log/detail/config.hpp> 20 21 #ifdef BOOST_HAS_PRAGMA_ONCE 22 #pragma once 23 #endif 24 25 #ifndef BOOST_LOG_DOXYGEN_PASS 26 27 #define BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL_(prefix, postfix)\ 28 BOOST_PP_CAT(prefix, postfix) 29 #define BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL(prefix, postfix)\ 30 BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL_(prefix, postfix) 31 32 #endif // BOOST_LOG_DOXYGEN_PASS 33 34 /*! 35 * \def BOOST_LOG_UNIQUE_IDENTIFIER_NAME(prefix) 36 * 37 * Constructs a unique (in the current file scope) token that can be used as a variable name. 38 * The name will contain a prefix passed in the \a prefix argument. This allows to use the 39 * macro multiple times on a single line. 40 */ 41 42 // In VC 7.0 and later when compiling with /ZI option __LINE__ macro is corrupted 43 #ifdef BOOST_MSVC 44 # define BOOST_LOG_UNIQUE_IDENTIFIER_NAME(prefix)\ 45 BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL(prefix, __COUNTER__) 46 #else 47 # define BOOST_LOG_UNIQUE_IDENTIFIER_NAME(prefix)\ 48 BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL(prefix, __LINE__) 49 #endif // BOOST_MSVC 50 51 #endif // BOOST_LOG_UTILITY_UNIQUE_IDENTIFIER_NAME_HPP_INCLUDED_ 52