Opus5
Interface PrePostVisitor

All Known Implementing Classes:

AbstractPrePostVisitor

public interface PrePostVisitor

Encapsulates methods implemented by visitors used in conjunction with various depth-first traversal methods.

Version:

$Id: PrePostVisitor.java,v 3.2 1998/07/28 14:00:02 brpreiss Exp $

Author:

Bruno R. Preiss, P.Eng.

See Also:

Tree.depthFirstTraversal(Opus5.PrePostVisitor), Graph.depthFirstTraversal(Opus5.PrePostVisitor, int)

Field Summary

static java.lang.String

copyright

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.

Field Detail

copyright

public static final java.lang.String copyright

Method Detail

preVisit

public void preVisit(java.lang.Object object)

"Pre"-visits the specified object. Used in pre-order traversals.

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.

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.

Parameters:

object - The object to visit.

See Also:

PostOrder

isDone

public boolean isDone()

Tests whether this visitor is done.

Returns:

True if this visitor is done; false otherwise.