uk.co.cogitolearning.cogpar

Class ExponentiationExpressionNode

java.lang.Object

uk.co.cogitolearning.cogpar.ExponentiationExpressionNode

All Implemented Interfaces:

ExpressionNode

public class ExponentiationExpressionNode
extends Object
implements ExpressionNode

An ExpressionNode that handles exponentiation. The node holds a base and an exponent and calulates base^exponent

Field Summary

Fields inherited from interface uk.co.cogitolearning.cogpar.ExpressionNode

ADDITION_NODE, CONSTANT_NODE, EXPONENTIATION_NODE, FUNCTION_NODE, MULTIPLICATION_NODE, VARIABLE_NODE

Constructor Summary

Constructors

Constructor and Description
ExponentiationExpressionNode(ExpressionNode base, ExpressionNode exponent) Construct the ExponentiationExpressionNode with base and exponent

Method Summary

Modifier and Type	Method and Description
void	accept(ExpressionNodeVisitor visitor) Implementation of the visitor design pattern.
int	getType() Returns the type of the node, in this case ExpressionNode.EXPONENTIATION_NODE
double	getValue() Returns the value of the sub-expression that is rooted at this node.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExponentiationExpressionNode

public ExponentiationExpressionNode(ExpressionNode base,
                                    ExpressionNode exponent)

Construct the ExponentiationExpressionNode with base and exponent

Parameters:

base - the node containing the base

exponent - the node containing the exponent

Method Detail

getType

public int getType()

Returns the type of the node, in this case ExpressionNode.EXPONENTIATION_NODE

Specified by:

getType in interface ExpressionNode

Returns:

type of the node

getValue

public double getValue()

Returns the value of the sub-expression that is rooted at this node. Calculates base^exponent

Specified by:

getValue in interface ExpressionNode

Returns:

value of expression

accept

public void accept(ExpressionNodeVisitor visitor)

Implementation of the visitor design pattern. Calls visit on the visitor and then passes the visitor on to the accept method of the base and the exponent.

Specified by:

accept in interface ExpressionNode

Parameters:

visitor - the visitor