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package bjc.utils.funcdata.bst;
/**
* Represents a function for doing a directed walk of a binary tree.
*
* @author ben
*
* @param <T>
* The type of element stored in the walked tree
*/
@FunctionalInterface
public interface DirectedWalkFunction<T> {
/**
* Represents the results used to direct a walk in a binary tree.
*
* @author ben
*
*/
public enum DirectedWalkResult {
/**
* Specifies that the function has failed.
*/
FAILURE,
/**
* Specifies that the function wants to move left in the tree
* next.
*/
LEFT,
/**
* Specifies that the function wants to move right in the tree
* next.
*/
RIGHT,
/**
* Specifies that the function has succesfully completed
*
*/
SUCCESS
}
/**
* Perform a directed walk on a node of a tree.
*
* @param element
* The data stored in the node currently being visited
* @return The way the function wants the walk to go next.
*/
public DirectedWalkResult walk(T element);
}
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