BiTree as a visitor to the
the BiTree host structure. The BiTree host will make the appropriate call on
this IVisitor's methods.
- Author:
- Dung X. Nguyen - Copyright 1999 - All rights reserved.

nonNullCase
(BiTree, Object)
- Called by the host when the host is not empty
nullCase
(BiTree, Object)
- Called by the host when the host is empty

nullCase
public abstract Object nullCase(BiTree host, Object input)
- Called by the host when the host is empty.
- Parameters:
- host -
- input - the input needed for this IVisitor to perform its task.
nonNullCase
public abstract Object nonNullCase(BiTree host, Object input)
- Called by the host when the host is not empty.
- Parameters:
- host -
- input - the input needed for this IVisitor to perform its task.