A composite node that allows for variable assignment. More...

#include <CompositeAssignmentNode.h>

Inheritance diagram for madara::expression::CompositeAssignmentNode:

Public Member Functions
	CompositeAssignmentNode (logger::Logger &logger, ComponentNode left, ComponentNode right)
	Constructor. 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 expression tree. 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...

Private Attributes
CompositeArrayReference *	array_

VariableNode *	var_
	Left should always be a variable node. More...

Detailed Description

A composite node that allows for variable assignment.

Left child should be a variable and right child should be an expression to evaluate

Definition at line 26 of file CompositeAssignmentNode.h.

Constructor & Destructor Documentation

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

Constructor.

Parameters

logger	the logger to use for printing
left	variable to assign the right expression to
right	right expression to assign to the variable

Definition at line 18 of file CompositeAssignmentNode.cpp.

Member Function Documentation

void madara::expression::CompositeAssignmentNode::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 127 of file CompositeAssignmentNode.cpp.

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

virtual

Evaluates the expression tree.

Evaluates the node and its children.

Parameters

settings settings for evaluating the node

Returns: value of evaluated right expression

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

Implements madara::expression::ComponentNode.

Definition at line 86 of file CompositeAssignmentNode.cpp.

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

virtual

Returns the printable character of the node.

Returns: value of the node

Reimplemented from madara::expression::ComponentNode.

Definition at line 30 of file CompositeAssignmentNode.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::CompositeAssignmentNode::prune ( bool & can_change )

virtual

Prunes the expression tree of unnecessary nodes.

Parameters

can_change set to true if variable nodes are contained

Returns: value of evaluated right expression

Implements madara::expression::ComponentNode.

Definition at line 37 of file CompositeAssignmentNode.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

CompositeArrayReference* madara::expression::CompositeAssignmentNode::array_

private

Definition at line 75 of file CompositeAssignmentNode.h.

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.

VariableNode* madara::expression::CompositeAssignmentNode::var_

private

Left should always be a variable node.

Using VariableNode instead of having to dynamic cast a Symbol * should be much fater.

Definition at line 74 of file CompositeAssignmentNode.h.

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

include/madara/expression/CompositeAssignmentNode.h
include/madara/expression/CompositeAssignmentNode.cpp

Public Member Functions

Protected Attributes

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation