madara::expression::CompositeNotNode Class Reference

A composite node that logically nots a right expression. More...

#include <CompositeNotNode.h>

Inheritance diagram for madara::expression::CompositeNotNode:

Public Member Functions
	CompositeNotNode (logger::Logger &logger, ComponentNode *right)
	Constructor. More...
virtual	~CompositeNotNode (void)
	Destructor. More...
virtual void	accept (Visitor &visitor) const
	Accepts a visitor subclassed from the Visitor class. More...
virtual madara::knowledge::KnowledgeRecord	evaluate (const madara::knowledge::KnowledgeUpdateSettings &settings)
	Evaluates the node. More...
virtual madara::knowledge::KnowledgeRecord	item (void) const
	Returns the printable character of the node. More...
virtual ComponentNode *	left (void) const
	Returns the left expression. More...
virtual madara::knowledge::KnowledgeRecord	prune (bool &can_change)
	Prunes the expression tree of unnecessary nodes. More...
virtual ComponentNode *	right (void) const
	Returns the right expression. More...
void	set_logger (logger::Logger &logger)
	Sets the logger for printing errors and debugging info. More...

Protected Attributes
logger::Logger *	logger_
	handle the context More...
ComponentNode *	right_
	Right expression. More...

Detailed Description

A composite node that logically nots a right expression.

For instance, !0 == 1. !8 == 0.

Definition at line 22 of file CompositeNotNode.h.

Constructor & Destructor Documentation

madara::expression::CompositeNotNode::CompositeNotNode	(	logger::Logger &	logger,
		ComponentNode *	right
	)

Constructor.

Parameters

logger	the logger to use for printing
right	right expression

Definition at line 15 of file CompositeNotNode.cpp.

madara::expression::CompositeNotNode::~CompositeNotNode ( void  )

virtual

Destructor.

Definition at line 22 of file CompositeNotNode.cpp.

Member Function Documentation

void madara::expression::CompositeNotNode::accept ( Visitor &  visitor ) const

virtual

Accepts a visitor subclassed from the Visitor class.

Parameters

visitor

visitor instance to use

Reimplemented from madara::expression::ComponentNode.

Definition at line 82 of file CompositeNotNode.cpp.

madara::knowledge::KnowledgeRecord madara::expression::CompositeNotNode::evaluate ( const madara::knowledge::KnowledgeUpdateSettings &  settings )

virtual

Evaluates the node.

Evaluates the node and its children.

Parameters

settings

settings for evaluating the node

Returns

0 if right expression is non-zero and 1 otherwise.

This does not prune any of the expression tree, and is much faster than the prune function

Implements madara::expression::ComponentNode.

Definition at line 74 of file CompositeNotNode.cpp.

madara::knowledge::KnowledgeRecord madara::expression::CompositeNotNode::item ( void  ) const

virtual

Returns the printable character of the node.

Returns

value of the node

Reimplemented from madara::expression::ComponentNode.

Definition at line 27 of file CompositeNotNode.cpp.

madara::expression::ComponentNode * madara::expression::ComponentNode::left ( void  ) const

virtualinherited

Returns the left expression.

Returns

a pointer to the left expression

Reimplemented in madara::expression::CompositeBinaryNode.

Definition at line 34 of file ComponentNode.cpp.

madara::knowledge::KnowledgeRecord madara::expression::CompositeNotNode::prune ( bool &  can_change )

virtual

Prunes the expression tree of unnecessary nodes.

Prune the tree of unnecessary nodes.

Parameters

can_change

set to true if variable nodes are contained

Returns

0 if right expression is non-zero and 1 otherwise.

Returns evaluation of the node and sets can_change appropriately. if this node can be changed, that means it shouldn't be pruned.

Implements madara::expression::ComponentNode.

Definition at line 39 of file CompositeNotNode.cpp.

madara::expression::ComponentNode * madara::expression::CompositeUnaryNode::right ( void  ) const

virtualinherited

Returns the right expression.

Returns

a pointer to the right expression

Reimplemented from madara::expression::ComponentNode.

Definition at line 24 of file CompositeUnaryNode.cpp.

void madara::expression::ComponentNode::set_logger ( logger::Logger &  logger )

inherited

Sets the logger for printing errors and debugging info.

Parameters

logger

the logger to use

Definition at line 53 of file ComponentNode.cpp.

Member Data Documentation

logger::Logger* madara::expression::ComponentNode::logger_

protectedinherited

handle the context

Definition at line 97 of file ComponentNode.h.

ComponentNode* madara::expression::CompositeUnaryNode::right_

protectedinherited

Right expression.

Definition at line 43 of file CompositeUnaryNode.h.

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The documentation for this class was generated from the following files:

• include/madara/expression/CompositeNotNode.h
• include/madara/expression/CompositeNotNode.cpp