Package com.singularsys.jep.walkers

Class DeepCopyVisitor

java.lang.Object

com.singularsys.jep.walkers.DoNothingVisitor

com.singularsys.jep.walkers.DeepCopyVisitor

All Implemented Interfaces:

JepComponent, ParserVisitor, Serializable

Direct Known Subclasses:

ExpressionConsolidator, ImportationVisitor

public class DeepCopyVisitor
extends DoNothingVisitor

A Visitor which returns an exact copy of the tree. This class should be extended by visitors which modify trees and creates a new tree.

Author:

Rich Morris Created on 16-Nov-2003

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.walkers.DoNothingVisitor

ft, jep, nf, ot, vt

Constructor Summary

Constructors

Constructor	Description
DeepCopyVisitor()	Constructor to use as a JepComponent.
DeepCopyVisitor(Jep j)	Constructor to use in a standalone context.

Method Summary

Modifier and Type	Method	Description
Node	deepCopy(Node node)	Creates a deepCopy of a Node
Object	visit(ASTConstant node, Object data)	Visit a constant node.
Object	visit(ASTFunNode node, Object data)	Visit a function node.
Object	visit(ASTOpNode node, Object data)	Visit an operator node.
Object	visit(ASTVarNode node, Object data)	Visit a variable node.

Methods inherited from class com.singularsys.jep.walkers.DoNothingVisitor

childrenHaveChanged, copyChildrenIfNeeded, getFunctionTable, getLightWeightInstance, getNodeFactory, getOperatorTable, getVariableTable, init, visit, visitChildren, visitNode

Methods inherited from class java.lang.Object

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

Constructor Details

DeepCopyVisitor

public DeepCopyVisitor(Jep j)

Constructor to use in a standalone context.

Parameters:

j - Jep instance to use.

DeepCopyVisitor

public DeepCopyVisitor()

Constructor to use as a JepComponent. DoNothingVisitor.init(Jep) must be called later.

Method Details

deepCopy

public Node deepCopy(Node node)
              throws ParseException

Creates a deepCopy of a Node

Throws:

ParseException

visit

public Object visit(ASTConstant node,
 Object data)
             throws JepException

Description copied from class: DoNothingVisitor

Visit a constant node. Can be overridden by subclasses.

Specified by:

visit in interface ParserVisitor

Overrides:

visit in class DoNothingVisitor

Throws:

JepException

visit

public Object visit(ASTFunNode node,
 Object data)
             throws JepException

Description copied from class: DoNothingVisitor

Visit a function node. Can be overridden by subclasses.

Specified by:

visit in interface ParserVisitor

Overrides:

visit in class DoNothingVisitor

Throws:

JepException

visit

public Object visit(ASTOpNode node,
 Object data)
             throws JepException

Description copied from class: DoNothingVisitor

Visit an operator node. Can be overridden by subclasses.

Specified by:

visit in interface ParserVisitor

Overrides:

visit in class DoNothingVisitor

Throws:

JepException

visit

public Object visit(ASTVarNode node,
 Object data)
             throws JepException

Description copied from class: DoNothingVisitor

Visit a variable node. Can be overridden by subclasses.

Specified by:

visit in interface ParserVisitor

Overrides:

visit in class DoNothingVisitor

Throws:

JepException