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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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