hw4
Interface HierarchyInterface

All Known Implementing Classes:

CourseHierarchy

public interface HierarchyInterface

Method Summary

void	assertParentOf(Type a, Type b) Type a is the parent type of b
void	finished() No more changes.
Type	getSuperClass(Type t1) Return the parent of the supplied type, null if none
boolean	narrows(Type t1, Type t2) is t1 a direct or indirect subclass of t2?
boolean	widens(Type t1, Type t2) Is t1 a direct or indirect superclass of t2?

Method Detail

assertParentOf

public void assertParentOf(Type a,
                           Type b)

Type a is the parent type of b

finished

public void finished()

No more changes. Make sure the tree is rooted and compute depth-first stuff

narrows

public boolean narrows(Type t1,
                       Type t2)

is t1 a direct or indirect subclass of t2?

widens

public boolean widens(Type t1,
                      Type t2)

Is t1 a direct or indirect superclass of t2?

getSuperClass

public Type getSuperClass(Type t1)

Return the parent of the supplied type, null if none