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   matches.hpp
Chris@16:  * \author Andrey Semashev
Chris@16:  * \date   02.09.2012
Chris@16:  *
Chris@16:  * The header contains implementation of a \c matches predicate in template expressions.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_LOG_EXPRESSIONS_PREDICATES_MATCHES_HPP_INCLUDED_
Chris@16: #define BOOST_LOG_EXPRESSIONS_PREDICATES_MATCHES_HPP_INCLUDED_
Chris@16: 
Chris@16: #include <boost/phoenix/core/actor.hpp>
Chris@16: #include <boost/log/detail/config.hpp>
Chris@16: #include <boost/log/detail/unary_function_terminal.hpp>
Chris@16: #include <boost/log/detail/attribute_predicate.hpp>
Chris@16: #include <boost/log/expressions/attr_fwd.hpp>
Chris@16: #include <boost/log/expressions/keyword_fwd.hpp>
Chris@16: #include <boost/log/attributes/attribute_name.hpp>
Chris@16: #include <boost/log/attributes/fallback_policy.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 expressions {
Chris@16: 
Chris@16: /*!
Chris@16:  * The predicate checks if the attribute value matches a regular expression. The attribute value is assumed to be of a string type.
Chris@16:  */
Chris@16: template< typename T, typename RegexT, typename FallbackPolicyT = fallback_to_none >
Chris@16: class attribute_matches :
Chris@101:     public aux::attribute_predicate< T, typename boost::log::aux::match_traits< RegexT >::compiled_type, matches_fun, FallbackPolicyT >
Chris@16: {
Chris@101:     typedef aux::attribute_predicate< T, typename boost::log::aux::match_traits< RegexT >::compiled_type, matches_fun, FallbackPolicyT > base_type;
Chris@16: 
Chris@16: public:
Chris@16:     /*!
Chris@16:      * Initializing constructor
Chris@16:      *
Chris@16:      * \param name Attribute name
Chris@16:      * \param rex The regular expression to match the attribute value against
Chris@16:      */
Chris@101:     attribute_matches(attribute_name const& name, RegexT const& rex) : base_type(name, boost::log::aux::match_traits< RegexT >::compile(rex))
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     /*!
Chris@16:      * Initializing constructor
Chris@16:      *
Chris@16:      * \param name Attribute name
Chris@16:      * \param rex The regular expression to match the attribute value against
Chris@16:      * \param arg Additional parameter for the fallback policy
Chris@16:      */
Chris@16:     template< typename U >
Chris@101:     attribute_matches(attribute_name const& name, RegexT const& rex, U const& arg) : base_type(name, boost::log::aux::match_traits< RegexT >::compile(rex), arg)
Chris@16:     {
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: /*!
Chris@16:  * The function generates a terminal node in a template expression. The node will check if the attribute value,
Chris@16:  * which is assumed to be a string, matches the specified regular expression.
Chris@16:  */
Chris@16: template< typename T, typename FallbackPolicyT, typename TagT, template< typename > class ActorT, typename RegexT >
Chris@16: BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_matches< T, RegexT, FallbackPolicyT > > >
Chris@16: matches(attribute_actor< T, FallbackPolicyT, TagT, ActorT > const& attr, RegexT const& rex)
Chris@16: {
Chris@16:     typedef aux::unary_function_terminal< attribute_matches< T, RegexT, FallbackPolicyT > > terminal_type;
Chris@16:     ActorT< terminal_type > act = {{ terminal_type(attr.get_name(), rex, attr.get_fallback_policy()) }};
Chris@16:     return act;
Chris@16: }
Chris@16: 
Chris@16: /*!
Chris@16:  * The function generates a terminal node in a template expression. The node will check if the attribute value,
Chris@16:  * which is assumed to be a string, matches the specified regular expression.
Chris@16:  */
Chris@16: template< typename DescriptorT, template< typename > class ActorT, typename RegexT >
Chris@16: BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_matches< typename DescriptorT::value_type, RegexT > > >
Chris@16: matches(attribute_keyword< DescriptorT, ActorT > const&, RegexT const& rex)
Chris@16: {
Chris@16:     typedef aux::unary_function_terminal< attribute_matches< typename DescriptorT::value_type, RegexT > > terminal_type;
Chris@16:     ActorT< terminal_type > act = {{ terminal_type(DescriptorT::get_name(), rex) }};
Chris@16:     return act;
Chris@16: }
Chris@16: 
Chris@16: /*!
Chris@16:  * The function generates a terminal node in a template expression. The node will check if the attribute value,
Chris@16:  * which is assumed to be a string, matches the specified regular expression.
Chris@16:  */
Chris@16: template< typename T, typename RegexT >
Chris@16: BOOST_FORCEINLINE phoenix::actor< aux::unary_function_terminal< attribute_matches< T, RegexT > > >
Chris@16: matches(attribute_name const& name, RegexT const& rex)
Chris@16: {
Chris@16:     typedef aux::unary_function_terminal< attribute_matches< T, RegexT > > terminal_type;
Chris@16:     phoenix::actor< terminal_type > act = {{ terminal_type(name, rex) }};
Chris@16:     return act;
Chris@16: }
Chris@16: 
Chris@16: } // namespace expressions
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_EXPRESSIONS_PREDICATES_MATCHES_HPP_INCLUDED_