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/*
* Copyright Andrey Semashev 2007 - 2014.
* 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 unique_identifier_name.hpp
* \author Andrey Semashev
* \date 30.04.2008
*
* The header contains \c BOOST_LOG_UNIQUE_IDENTIFIER_NAME macro definition.
*/
#ifndef BOOST_LOG_UTILITY_UNIQUE_IDENTIFIER_NAME_HPP_INCLUDED_
#define BOOST_LOG_UTILITY_UNIQUE_IDENTIFIER_NAME_HPP_INCLUDED_
#include <boost/preprocessor/cat.hpp>
#include <boost/log/detail/config.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif
#ifndef BOOST_LOG_DOXYGEN_PASS
#define BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL_(prefix, postfix)\
BOOST_PP_CAT(prefix, postfix)
#define BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL(prefix, postfix)\
BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL_(prefix, postfix)
#endif // BOOST_LOG_DOXYGEN_PASS
/*!
* \def BOOST_LOG_UNIQUE_IDENTIFIER_NAME(prefix)
*
* Constructs a unique (in the current file scope) token that can be used as a variable name.
* The name will contain a prefix passed in the \a prefix argument. This allows to use the
* macro multiple times on a single line.
*/
// In VC 7.0 and later when compiling with /ZI option __LINE__ macro is corrupted
#ifdef BOOST_MSVC
# define BOOST_LOG_UNIQUE_IDENTIFIER_NAME(prefix)\
BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL(prefix, __COUNTER__)
#else
# define BOOST_LOG_UNIQUE_IDENTIFIER_NAME(prefix)\
BOOST_LOG_UNIQUE_IDENTIFIER_NAME_INTERNAL(prefix, __LINE__)
#endif // BOOST_MSVC
#endif // BOOST_LOG_UTILITY_UNIQUE_IDENTIFIER_NAME_HPP_INCLUDED_
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