Chris@16: /*
Chris@101:  *          Copyright Andrey Semashev 2007 - 2015.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  *    (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  *          http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  */
Chris@16: /*!
Chris@16:  * \file   support/xpressive.hpp
Chris@16:  * \author Andrey Semashev
Chris@16:  * \date   18.07.2009
Chris@16:  *
Chris@16:  * This header enables Boost.Xpressive support for Boost.Log.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_LOG_SUPPORT_XPRESSIVE_HPP_INCLUDED_
Chris@16: #define BOOST_LOG_SUPPORT_XPRESSIVE_HPP_INCLUDED_
Chris@16: 
Chris@101: #include <string>
Chris@16: #include <boost/xpressive/basic_regex.hpp>
Chris@16: #include <boost/xpressive/regex_constants.hpp>
Chris@16: #include <boost/xpressive/regex_algorithms.hpp>
Chris@16: #include <boost/log/detail/config.hpp>
Chris@16: #include <boost/log/utility/functional/matches.hpp>
Chris@16: #include <boost/log/detail/header.hpp>
Chris@16: 
Chris@16: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16: BOOST_LOG_OPEN_NAMESPACE
Chris@16: 
Chris@16: namespace aux {
Chris@16: 
Chris@101: //! This tag type is used if an expression is recognized as a Boost.Xpressive expression
Chris@101: struct boost_xpressive_expression_tag;
Chris@101: 
Chris@101: //! The metafunction detects the matching expression kind and returns a tag that is used to specialize \c match_traits
Chris@16: template< typename T >
Chris@101: struct matching_expression_kind< xpressive::basic_regex< T > >
Chris@16: {
Chris@101:     typedef boost_xpressive_expression_tag type;
Chris@16: };
Chris@16: 
Chris@101: //! The matching function implementation
Chris@101: template< typename ExpressionT >
Chris@101: struct match_traits< ExpressionT, boost_xpressive_expression_tag >
Chris@16: {
Chris@101:     typedef ExpressionT compiled_type;
Chris@101:     static compiled_type compile(ExpressionT const& expr) { return expr; }
Chris@101: 
Chris@16:     template< typename StringT, typename T >
Chris@101:     static bool matches(StringT const& str, xpressive::basic_regex< T > const& expr, xpressive::regex_constants::match_flag_type flags = xpressive::regex_constants::match_default)
Chris@16:     {
Chris@16:         return xpressive::regex_match(str, expr, flags);
Chris@16:     }
Chris@16: 
Chris@101:     template< typename CharT, typename TraitsT, typename AllocatorT >
Chris@101:     static bool matches(std::basic_string< CharT, TraitsT, AllocatorT > const& str, xpressive::basic_regex< const CharT* > const& expr, xpressive::regex_constants::match_flag_type flags = xpressive::regex_constants::match_default)
Chris@16:     {
Chris@101:         const CharT* p = str.c_str();
Chris@101:         return xpressive::regex_match(p, p + str.size(), expr, flags);
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: } // namespace aux
Chris@16: 
Chris@16: BOOST_LOG_CLOSE_NAMESPACE // namespace log
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/log/detail/footer.hpp>
Chris@16: 
Chris@16: #endif // BOOST_LOG_SUPPORT_XPRESSIVE_HPP_INCLUDED_