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Diffstat (limited to 'boost/log/support/std_regex.hpp')
-rw-r--r-- | boost/log/support/std_regex.hpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/boost/log/support/std_regex.hpp b/boost/log/support/std_regex.hpp new file mode 100644 index 0000000000..92395352ac --- /dev/null +++ b/boost/log/support/std_regex.hpp @@ -0,0 +1,86 @@ +/* + * 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 support/std_regex.hpp + * \author Andrey Semashev + * \date 19.03.2014 + * + * This header enables \c std::regex support for Boost.Log. + */ + +#ifndef BOOST_LOG_SUPPORT_STD_REGEX_HPP_INCLUDED_ +#define BOOST_LOG_SUPPORT_STD_REGEX_HPP_INCLUDED_ + +#include <boost/log/detail/config.hpp> + +#ifdef BOOST_HAS_PRAGMA_ONCE +#pragma once +#endif + +#if defined(BOOST_NO_CXX11_HDR_REGEX) + +#if defined(__GNUC__) +#pragma message "Boost.Log: This header requires support for std::regex in the standard library." +#elif defined(_MSC_VER) +#pragma message("Boost.Log: This header requires support for std::regex in the standard library.") +#endif + +#else // defined(BOOST_NO_CXX11_HDR_REGEX) + +#include <regex> +#include <string> +#include <boost/log/utility/functional/matches.hpp> +#include <boost/log/detail/header.hpp> + +namespace boost { + +BOOST_LOG_OPEN_NAMESPACE + +namespace aux { + +//! This tag type is used if an expression is recognized as \c std::regex +struct std_regex_expression_tag; + +//! The metafunction detects the matching expression kind and returns a tag that is used to specialize \c match_traits +template< typename CharT, typename ReTraitsT > +struct matching_expression_kind< std::basic_regex< CharT, ReTraitsT > > +{ + typedef std_regex_expression_tag type; +}; + +//! The matching function implementation +template< typename ExpressionT > +struct match_traits< ExpressionT, std_regex_expression_tag > +{ + typedef ExpressionT compiled_type; + static compiled_type compile(ExpressionT const& expr) { return expr; } + + template< typename StringT, typename CharT, typename ReTraitsT > + static bool matches(StringT const& str, std::basic_regex< CharT, ReTraitsT > const& expr, std::regex_constants::match_flag_type flags = std::regex_constants::match_default) + { + return std::regex_match(str.begin(), str.end(), expr, flags); + } + + template< typename CharT, typename StringTraitsT, typename AllocatorT, typename ReTraitsT > + static bool matches(std::basic_string< CharT, StringTraitsT, AllocatorT > const& str, std::basic_regex< CharT, ReTraitsT > const& expr, std::regex_constants::match_flag_type flags = std::regex_constants::match_default) + { + const CharT* p = str.c_str(); + return std::regex_match(p, p + str.size(), expr, flags); + } +}; + +} // namespace aux + +BOOST_LOG_CLOSE_NAMESPACE // namespace log + +} // namespace boost + +#include <boost/log/detail/footer.hpp> + +#endif // defined(BOOST_NO_CXX11_HDR_REGEX) + +#endif // BOOST_LOG_SUPPORT_STD_REGEX_HPP_INCLUDED_ |