Opus5
Class AbstractPrePostVisitor

java.lang.Object
  |
  +--Opus5.AbstractPrePostVisitor

All Implemented Interfaces:

PrePostVisitor

Direct Known Subclasses:

InOrder, PostOrder, PreOrder

public abstract class AbstractPrePostVisitor

extends java.lang.Object

implements PrePostVisitor

The AbstractPrePostVisitor class is the base class from which all concrete pre/post visitor classes are derived. This abstract class provides default implementations for the methods declared in the PrePostVisitor interface.

Version:

$Id: AbstractPrePostVisitor.java,v 3.2 1998/07/28 13:04:34 brpreiss Exp $

Author:

Bruno R. Preiss, P.Eng.

See Also:

PrePostVisitor

Fields inherited from interface Opus5.PrePostVisitor

copyright

Constructor Summary

AbstractPrePostVisitor()

Method Summary

void	inVisit(java.lang.Object object) "In"-visits the specified object.
boolean	isDone() Tests whether this visitor is done.
void	postVisit(java.lang.Object object) "Post"-visits the specified object.
void	preVisit(java.lang.Object object) "Pre"-visits the specified object.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractPrePostVisitor

public AbstractPrePostVisitor()

Method Detail

preVisit

public void preVisit(java.lang.Object object)

"Pre"-visits the specified object. Used in pre-order traversals. The default implementation does nothing.

Specified by:

preVisit in interface PrePostVisitor

Parameters:

object - The object to visit.

See Also:

PreOrder

inVisit

public void inVisit(java.lang.Object object)

"In"-visits the specified object. Used in in-order traversals. The default implementation does nothing.

Specified by:

inVisit in interface PrePostVisitor

Parameters:

object - The object to visit.

See Also:

InOrder

postVisit

public void postVisit(java.lang.Object object)

"Post"-visits the specified object. Used in post-order traversals. The default implementation does nothing.

Specified by:

postVisit in interface PrePostVisitor

Parameters:

object - The object to visit.

See Also:

PostOrder

isDone

public boolean isDone()

Tests whether this visitor is done. The default implementation always returns false.

Specified by:

isDone in interface PrePostVisitor

Returns:

True if this visitor is done.