109 lines
2.0 KiB
C++
109 lines
2.0 KiB
C++
/*
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* Copyright Andrey Semashev 2007 - 2013.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file deduce_char_type.hpp
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* \author Andrey Semashev
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* \date 17.11.2012
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*
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* \brief This header is the Boost.Log library implementation, see the library documentation
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* at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
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*/
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#ifndef BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_HPP_INCLUDED_
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#define BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_HPP_INCLUDED_
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#include <boost/log/detail/config.hpp>
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#include <boost/log/detail/header.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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namespace boost {
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BOOST_LOG_OPEN_NAMESPACE
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namespace aux {
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template< typename T >
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struct deduced_char_type;
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template< >
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struct deduced_char_type< char >
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{
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typedef char type;
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};
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template< >
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struct deduced_char_type< const char >
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{
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typedef char type;
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};
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template< >
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struct deduced_char_type< wchar_t >
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{
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typedef wchar_t type;
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};
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template< >
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struct deduced_char_type< const wchar_t >
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{
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typedef wchar_t type;
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};
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//! Auxiliary traits to detect character type from a string
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template< typename RangeT >
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struct deduce_char_type :
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public deduced_char_type< typename RangeT::value_type >
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{
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};
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template< typename T >
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struct deduce_char_type< T* > :
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public deduced_char_type< T >
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{
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};
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template< typename T >
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struct deduce_char_type< T* const > :
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public deduced_char_type< T >
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{
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};
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template< typename T, unsigned int CountV >
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struct deduce_char_type< T[CountV] > :
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public deduced_char_type< T >
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{
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};
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template< typename T >
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struct deduce_char_type< T& > :
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public deduce_char_type< T >
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{
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};
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#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
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template< typename T >
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struct deduce_char_type< T&& > :
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public deduce_char_type< T >
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{
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};
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#endif
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} // namespace aux
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BOOST_LOG_CLOSE_NAMESPACE // namespace log
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} // namespace boost
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#include <boost/log/detail/footer.hpp>
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#endif // BOOST_LOG_DETAIL_DEDUCE_CHAR_TYPE_HPP_INCLUDED_
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