uk.ac.starlink.util
Interface NodeDescendants.Visitor

Enclosing class:

NodeDescendants

public static interface NodeDescendants.Visitor

The Visitor processes a single node in a tree. This allows an object to visit each of the nodes in a tree.

See Also:

NodeDescendants.visitTree(uk.ac.starlink.util.NodeDescendants.Visitor)

Method Summary

Object

visitNode(Node n) Visit a node in a tree.

Method Detail

visitNode

Object visitNode(Node n)

Visit a node in a tree. If the object doing the visiting wishes to stop the traversal early, it should return non-null. Otherwise it should return null.

Parameters:

n - the node being visited

Returns:

null if the traversal is to continue after this node; non-null if it is to stop