public abstract class Atom<T extends Token> extends Element implements Topology<T> {
protected abstract Topology<T> top();
+ public abstract String toString();
- public Topology toAtom() { return dup(); }
-
- /** equality is based on the underlying <tt>Topology</tt> */
- public int hashCode() { return top().hashCode(); }
-
- /** equality is based on the underlying <tt>Topology</tt> */
- public boolean equals(Object o) { return o != null && o instanceof Atom && ((Atom)o).top().equals(top()); }
-
- /** declared abstract to force subclasses to override it in a useful manner */
- public abstract String toString();
+ public Topology toAtom() { return this; }
// Topology Thunks //////////////////////////////////////////////////////////////////////////////
- public void add(Topology<T> t) { top().add(t); }
- public void add(T t) { top().add(t); }
- public void remove(Topology<T> t) { top().remove(t); }
- public void remove(T t) { top().remove(t); }
- public Topology<T> dup() { return top().dup(); }
+ public Topology<T> unwrap() { return top().unwrap(); }
+ public Topology<T> empty() { return top().empty(); }
public boolean contains(T v) { return top().contains(v); }
- public Topology<T> fresh() { return top().fresh(); }
public Topology<T> intersect(Topology<T> t) { return top().intersect(t); }
public Topology<T> minus(Topology<T> t) { return top().minus(t); }
public Topology<T> union(Topology<T> t) { return top().union(t); }
public Topology<T> complement() { return top().complement(); }
public boolean disjoint(Topology<T> t) { return top().disjoint(t); }
public boolean containsAll(Topology<T> t) { return top().containsAll(t); }
+ public int hashCode() { return top().hashCode(); }
+ public boolean equals(Object o) { return o != null && o instanceof Atom && ((Atom)o).top().equals(top()); }
// Subclasses //////////////////////////////////////////////////////////////////////////////