130 lines
5.3 KiB
C++
130 lines
5.3 KiB
C++
/*
|
|
* 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 contains.hpp
|
|
* \author Andrey Semashev
|
|
* \date 02.09.2012
|
|
*
|
|
* The header contains implementation of a \c contains predicate in template expressions.
|
|
*/
|
|
|
|
#ifndef BOOST_LOG_EXPRESSIONS_PREDICATES_CONTAINS_HPP_INCLUDED_
|
|
#define BOOST_LOG_EXPRESSIONS_PREDICATES_CONTAINS_HPP_INCLUDED_
|
|
|
|
#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/contains.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 SubstringT, typename FallbackPolicyT = fallback_to_none >
|
|
using attribute_contains = aux::attribute_predicate< T, SubstringT, contains_fun, FallbackPolicyT >;
|
|
|
|
#else // !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
|
|
|
|
template< typename T, typename SubstringT, typename FallbackPolicyT = fallback_to_none >
|
|
class attribute_contains :
|
|
public aux::attribute_predicate< T, SubstringT, contains_fun, FallbackPolicyT >
|
|
{
|
|
typedef aux::attribute_predicate< T, SubstringT, contains_fun, FallbackPolicyT > base_type;
|
|
|
|
public:
|
|
/*!
|
|
* Initializing constructor
|
|
*
|
|
* \param name Attribute name
|
|
* \param substring The expected attribute value substring
|
|
*/
|
|
attribute_contains(attribute_name const& name, SubstringT const& substring) : base_type(name, substring)
|
|
{
|
|
}
|
|
|
|
/*!
|
|
* Initializing constructor
|
|
*
|
|
* \param name Attribute name
|
|
* \param substring The expected attribute value substring
|
|
* \param arg Additional parameter for the fallback policy
|
|
*/
|
|
template< typename U >
|
|
attribute_contains(attribute_name const& name, SubstringT const& substring, U const& arg) : base_type(name, substring, 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,
|
|
* which is assumed to be a string, contains the specified substring.
|
|
*/
|
|
template< typename T, typename FallbackPolicyT, typename TagT, template< typename > class ActorT, typename SubstringT >
|
|
BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_contains< T, typename boost::log::aux::make_embedded_string_type< SubstringT >::type, FallbackPolicyT > > >
|
|
contains(attribute_actor< T, FallbackPolicyT, TagT, ActorT > const& attr, SubstringT const& substring)
|
|
{
|
|
typedef aux::unary_function_terminal< attribute_contains< T, typename boost::log::aux::make_embedded_string_type< SubstringT >::type, FallbackPolicyT > > terminal_type;
|
|
ActorT< terminal_type > act = {{ terminal_type(attr.get_name(), substring, attr.get_fallback_policy()) }};
|
|
return act;
|
|
}
|
|
|
|
/*!
|
|
* The function generates a terminal node in a template expression. The node will check if the attribute value,
|
|
* which is assumed to be a string, contains the specified substring.
|
|
*/
|
|
template< typename DescriptorT, template< typename > class ActorT, typename SubstringT >
|
|
BOOST_FORCEINLINE ActorT< aux::unary_function_terminal< attribute_contains< typename DescriptorT::value_type, typename boost::log::aux::make_embedded_string_type< SubstringT >::type > > >
|
|
contains(attribute_keyword< DescriptorT, ActorT > const&, SubstringT const& substring)
|
|
{
|
|
typedef aux::unary_function_terminal< attribute_contains< typename DescriptorT::value_type, typename boost::log::aux::make_embedded_string_type< SubstringT >::type > > terminal_type;
|
|
ActorT< terminal_type > act = {{ terminal_type(DescriptorT::get_name(), substring) }};
|
|
return act;
|
|
}
|
|
|
|
/*!
|
|
* The function generates a terminal node in a template expression. The node will check if the attribute value,
|
|
* which is assumed to be a string, contains the specified substring.
|
|
*/
|
|
template< typename T, typename SubstringT >
|
|
BOOST_FORCEINLINE phoenix::actor< aux::unary_function_terminal< attribute_contains< T, typename boost::log::aux::make_embedded_string_type< SubstringT >::type > > >
|
|
contains(attribute_name const& name, SubstringT const& substring)
|
|
{
|
|
typedef aux::unary_function_terminal< attribute_contains< T, typename boost::log::aux::make_embedded_string_type< SubstringT >::type > > terminal_type;
|
|
phoenix::actor< terminal_type > act = {{ terminal_type(name, substring) }};
|
|
return act;
|
|
}
|
|
|
|
} // namespace expressions
|
|
|
|
BOOST_LOG_CLOSE_NAMESPACE // namespace log
|
|
|
|
} // namespace boost
|
|
|
|
#include <boost/log/detail/footer.hpp>
|
|
|
|
#endif // BOOST_LOG_EXPRESSIONS_PREDICATES_CONTAINS_HPP_INCLUDED_
|