boost::expressions::attribute_keyword< DescriptorT, ActorT > Struct Template Reference

This class implements an expression template keyword. More...

#include <keyword_fwd.hpp>

Public Types
typedef attribute_keyword	this_type
	Self type. More...
typedef DescriptorT	descriptor_type
	Attribute descriptor type. More...
typedef descriptor_type::value_type	value_type
	Attribute value type. More...
typedef attribute_actor < value_type, fallback_to_none, descriptor_type, ActorT >	or_none_result_type
	Expression with cached attribute name. More...
typedef attribute_actor < value_type, fallback_to_throw, descriptor_type, ActorT >	or_throw_result_type
	Expression with cached attribute name. More...

Static Public Member Functions
static attribute_name	get_name ()
	Returns attribute name. More...
static or_none_result_type	or_none ()
	Generates an expression that extracts the attribute value or a default value. More...
static or_throw_result_type	or_throw ()
	Generates an expression that extracts the attribute value or throws an exception. More...
template<typename DefaultT >
static attribute_actor < value_type, fallback_to_default< DefaultT > , descriptor_type, ActorT >	or_default (DefaultT const &def_val)
	Generates an expression that extracts the attribute value or a default value. More...

Detailed Description

template<typename DescriptorT, template< typename > class ActorT>
struct boost::expressions::attribute_keyword< DescriptorT, ActorT >

This class implements an expression template keyword.

It is used to start template expressions involving attribute values.

Member Typedef Documentation

template<typename DescriptorT, template< typename > class ActorT>

typedef DescriptorT boost::expressions::attribute_keyword< DescriptorT, ActorT >::descriptor_type

Attribute descriptor type.

template<typename DescriptorT, template< typename > class ActorT>

typedef attribute_actor< value_type, fallback_to_none, descriptor_type, ActorT > boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_none_result_type

Expression with cached attribute name.

template<typename DescriptorT, template< typename > class ActorT>

typedef attribute_actor< value_type, fallback_to_throw, descriptor_type, ActorT > boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_throw_result_type

Expression with cached attribute name.

template<typename DescriptorT, template< typename > class ActorT>

typedef attribute_keyword boost::expressions::attribute_keyword< DescriptorT, ActorT >::this_type

Self type.

template<typename DescriptorT, template< typename > class ActorT>

typedef descriptor_type::value_type boost::expressions::attribute_keyword< DescriptorT, ActorT >::value_type

Attribute value type.

Member Function Documentation

template<typename DescriptorT, template< typename > class ActorT>

static attribute_name boost::expressions::attribute_keyword< DescriptorT, ActorT >::get_name ( )

inlinestatic

Returns attribute name.

Referenced by boost::expressions::channel_severity_filter(), boost::extract(), boost::extract_or_default(), boost::extract_or_throw(), boost::expressions::format_date_time(), boost::expressions::format_named_scope(), boost::attribute_value_set::operator[](), boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_default(), boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_none(), boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_throw(), boost::register_simple_filter_factory(), and boost::visit().

template<typename DescriptorT, template< typename > class ActorT>

template<typename DefaultT >

static attribute_actor< value_type, fallback_to_default< DefaultT >, descriptor_type, ActorT > boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_default ( DefaultT const &  def_val )

inlinestatic

Generates an expression that extracts the attribute value or a default value.

References boost::expressions::attribute_keyword< DescriptorT, ActorT >::get_name().

template<typename DescriptorT, template< typename > class ActorT>

static or_none_result_type boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_none ( )

inlinestatic

Generates an expression that extracts the attribute value or a default value.

References boost::expressions::attribute_keyword< DescriptorT, ActorT >::get_name().

template<typename DescriptorT, template< typename > class ActorT>

static or_throw_result_type boost::expressions::attribute_keyword< DescriptorT, ActorT >::or_throw ( )

inlinestatic

Generates an expression that extracts the attribute value or throws an exception.

References boost::expressions::attribute_keyword< DescriptorT, ActorT >::get_name().

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The documentation for this struct was generated from the following file:

• boost_1_57_0/boost/log/expressions/keyword.hpp