An ExpressionNode that stores a named variable. More...

Inheritance diagram for uk.co.cogitolearning.cogpar.VariableExpressionNode:

Collaboration diagram for uk.co.cogitolearning.cogpar.VariableExpressionNode:

Public Member Functions
	VariableExpressionNode (String name)
	Construct with the name of the variable.
String	getName ()
int	getType ()
	Returns the type of the node, in this case ExpressionNode.VARIABLE_NODE.
void	setValue (double value)
	Sets the value of the variable.
double	getValue ()
	Returns the value of the variable but throws an exception if the value has not been set.
void	accept (ExpressionNodeVisitor visitor)
	Implementation of the visitor design pattern.

Private Attributes
String	name
	The name of the variable.
double	value
	The value of the variable.
boolean	valueSet
	indicates if the value has been set

Additional Inherited Members
Static Public Attributes inherited from uk.co.cogitolearning.cogpar.ExpressionNode
static final int	VARIABLE_NODE = 1
	Node id for variable nodes.
static final int	CONSTANT_NODE = 2
	Node id for constant nodes.
static final int	ADDITION_NODE = 3
	Node id for addition nodes.
static final int	MULTIPLICATION_NODE = 4
	Node id for multiplication nodes.
static final int	EXPONENTIATION_NODE = 5
	Node id for exponentiation nodes.
static final int	FUNCTION_NODE = 6
	Node id for function nodes.