com.singularsys.extensions.rewrite

Class AbstractRewrite

java.lang.Object

com.singularsys.extensions.rewrite.AbstractRewrite

All Implemented Interfaces:

RewriteRuleI, JepComponent, java.io.Serializable

Direct Known Subclasses:

CollectPowers, ExpandBrackets, ExpandPower

public abstract class AbstractRewrite
extends java.lang.Object
implements RewriteRuleI

Basic implementation for a RewriteRule. Subclasses can have access to NodeFactory,OperatorSet,TreeUtilsand XJep objects.

Author:

Rich Morris Created on 01-Oct-2004

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected DeepCopyVisitor	dcv
protected NodeFactory	nf A NodeFactory used for construction nodes.
protected OperatorTableI	opSet An OperatorSet used for finding operators.
protected TreeUtils	tu TreeUtils for testing types of nodes.
protected Jep	xj A reference to main XJep opbject.

Constructor Summary

Constructors

Constructor and Description
AbstractRewrite()

Method Summary

Modifier and Type	Method and Description
JepComponent	getLightWeightInstance() Gets a light-weight instance suitable for using in multiple threads.
void	init(Jep jep) Initialize the component.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.singularsys.extensions.rewrite.RewriteRuleI

apply, test

Field Detail

nf

protected NodeFactory nf

A NodeFactory used for construction nodes.

opSet

protected OperatorTableI opSet

An OperatorSet used for finding operators.

tu

protected TreeUtils tu

TreeUtils for testing types of nodes.

xj

protected Jep xj

A reference to main XJep opbject.

dcv

protected DeepCopyVisitor dcv

Constructor Detail

AbstractRewrite

public AbstractRewrite()

Method Detail

init

public void init(Jep jep)

Description copied from interface: JepComponent

Initialize the component. This methods is called whenever a component is added to Jep. Hence it allows components to keep track of the other components they may rely on.

Specified by:

init in interface JepComponent

Parameters:

jep - the current Jep instance

getLightWeightInstance

public JepComponent getLightWeightInstance()

Description copied from interface: JepComponent

Gets a light-weight instance suitable for using in multiple threads.

Specified by:

getLightWeightInstance in interface JepComponent

Returns:

either an new instance, or 'this'.