Package com.singularsys.extensions.rewrite

Class CollectPowers

java.lang.Object

com.singularsys.extensions.rewrite.AbstractRewrite

com.singularsys.extensions.rewrite.CollectPowers

All Implemented Interfaces:

RewriteRuleI, JepComponent, java.io.Serializable

public class CollectPowers
extends AbstractRewrite

Collect powers together so that x*x -> x^2 and x^n*x -> x^(n+1).

Author:

Rich Morris Created on 06-Oct-2004

See Also:

Serialized Form

Field Summary

Fields inherited from class com.singularsys.extensions.rewrite.AbstractRewrite

dcv, nf, opSet, tu, xj

Constructor Summary

Constructors

Constructor	Description
CollectPowers()

Method Summary

Modifier and Type	Method	Description
Node	apply(ASTFunNode node, Node[] children)	Rewrites the node
boolean	test(ASTFunNode node, Node[] children)	Returns true if node needs to be rewritten, according to this rule.

Methods inherited from class com.singularsys.extensions.rewrite.AbstractRewrite

getLightWeightInstance, init

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectPowers

public CollectPowers()

Method Detail

test

public boolean test(ASTFunNode node,
                    Node[] children)

Description copied from interface: RewriteRuleI

Returns true if node needs to be rewritten, according to this rule.

apply

public Node apply(ASTFunNode node,
                  Node[] children)
           throws ParseException

Description copied from interface: RewriteRuleI

Rewrites the node

Throws:

ParseException