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- /*
- * Copyright Andrey Semashev 2007 - 2015.
- * 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 is_in_range.hpp
- * \author Andrey Semashev
- * \date 02.09.2012
- *
- * The header contains implementation of an \c is_in_range predicate in template expressions.
- */
- #ifndef BOOST_LOG_EXPRESSIONS_PREDICATES_IS_IN_RANGE_HPP_INCLUDED_
- #define BOOST_LOG_EXPRESSIONS_PREDICATES_IS_IN_RANGE_HPP_INCLUDED_
- #include <utility>
- #include <boost/phoenix/core/actor.hpp>
- #include <boost/log/detail/config.hpp>
- #include <boost/log/detail/embedded_string_type.hpp>
- #include <boost/log/detail/unary_function_terminal.hpp>
- #include <boost/log/detail/attribute_predicate.hpp>
- #include <boost/log/expressions/attr_fwd.hpp>
- #include <boost/log/expressions/keyword_fwd.hpp>
- #include <boost/log/attributes/attribute_name.hpp>
- #include <boost/log/attributes/fallback_policy.hpp>
- #include <boost/log/utility/functional/in_range.hpp>
- #include <boost/log/detail/header.hpp>
- #ifdef BOOST_HAS_PRAGMA_ONCE
- #pragma once
- #endif
- namespace boost {
- BOOST_LOG_OPEN_NAMESPACE
- namespace expressions {
- /*!
- * The predicate checks if the attribute value contains a substring. The attribute value is assumed to be of a string type.
- */
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- template< typename T, typename BoundaryT, typename FallbackPolicyT = fallback_to_none >
- using attribute_is_in_range = aux::attribute_predicate< T, std::pair< BoundaryT, BoundaryT >, in_range_fun, FallbackPolicyT >;
- #else // !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- template< typename T, typename BoundaryT, typename FallbackPolicyT = fallback_to_none >
- class attribute_is_in_range :
- public aux::attribute_predicate< T, std::pair< BoundaryT, BoundaryT >, in_range_fun, FallbackPolicyT >
- {
- typedef aux::attribute_predicate< T, std::pair< BoundaryT, BoundaryT >, in_range_fun, FallbackPolicyT > base_type;
- public:
- /*!
- * Initializing constructor
- *
- * \param name Attribute name
- * \param boundaries The expected attribute value boundaries
- */
- attribute_is_in_range(attribute_name const& name, std::pair< BoundaryT, BoundaryT > const& boundaries) : base_type(name, boundaries)
- {
- }
- /*!
- * Initializing constructor
- *
- * \param name Attribute name
- * \param boundaries The expected attribute value boundaries
- * \param arg Additional parameter for the fallback policy
- */
- template< typename U >
- attribute_is_in_range(attribute_name const& name, std::pair< BoundaryT, BoundaryT > const& boundaries, U const& arg) : base_type(name, boundaries, arg)
- {
- }
- };
- #endif // !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- /*!
- * The function generates a terminal node in a template expression. The node will check if the attribute value
- * is in the specified range. The range must be half-open, that is the predicate will be equivalent to <tt>least <= attr < most</tt>.
- */
- template< typename T, typename FallbackPolicyT, typename TagT, template< typename > class ActorT, typename BoundaryT >
- BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_is_in_range< T, typename boost::log::aux::make_embedded_string_type< BoundaryT >::type, FallbackPolicyT > > >
- is_in_range(attribute_actor< T, FallbackPolicyT, TagT, ActorT > const& attr, BoundaryT const& least, BoundaryT const& most)
- {
- typedef typename boost::log::aux::make_embedded_string_type< BoundaryT >::type boundary_type;
- typedef aux::unary_function_terminal< attribute_is_in_range< T, boundary_type, FallbackPolicyT > > terminal_type;
- ActorT< terminal_type > act = {{ terminal_type(attr.get_name(), std::pair< boundary_type, boundary_type >(least, most), attr.get_fallback_policy()) }};
- return act;
- }
- /*!
- * The function generates a terminal node in a template expression. The node will check if the attribute value
- * is in the specified range. The range must be half-open, that is the predicate will be equivalent to <tt>least <= attr < most</tt>.
- */
- template< typename DescriptorT, template< typename > class ActorT, typename BoundaryT >
- BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_is_in_range< typename DescriptorT::value_type, typename boost::log::aux::make_embedded_string_type< BoundaryT >::type > > >
- is_in_range(attribute_keyword< DescriptorT, ActorT > const&, BoundaryT const& least, BoundaryT const& most)
- {
- typedef typename boost::log::aux::make_embedded_string_type< BoundaryT >::type boundary_type;
- typedef aux::unary_function_terminal< attribute_is_in_range< typename DescriptorT::value_type, boundary_type > > terminal_type;
- ActorT< terminal_type > act = {{ terminal_type(DescriptorT::get_name(), std::pair< boundary_type, boundary_type >(least, most)) }};
- return act;
- }
- /*!
- * The function generates a terminal node in a template expression. The node will check if the attribute value
- * is in the specified range. The range must be half-open, that is the predicate will be equivalent to <tt>least <= attr < most</tt>.
- */
- template< typename T, typename BoundaryT >
- BOOST_FORCEINLINE phoenix::actor< aux::unary_function_terminal< attribute_is_in_range< T, typename boost::log::aux::make_embedded_string_type< BoundaryT >::type > > >
- is_in_range(attribute_name const& name, BoundaryT const& least, BoundaryT const& most)
- {
- typedef typename boost::log::aux::make_embedded_string_type< BoundaryT >::type boundary_type;
- typedef aux::unary_function_terminal< attribute_is_in_range< T, boundary_type > > terminal_type;
- phoenix::actor< terminal_type > act = {{ terminal_type(name, std::pair< boundary_type, boundary_type >(least, most)) }};
- return act;
- }
- } // namespace expressions
- BOOST_LOG_CLOSE_NAMESPACE // namespace log
- } // namespace boost
- #include <boost/log/detail/footer.hpp>
- #endif // BOOST_LOG_EXPRESSIONS_PREDICATES_IS_IN_RANGE_HPP_INCLUDED_
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