public static void addDomainConstants(
Iterable<Term> constants, MultiList<Object, Set<Term>> interchangeable) {
MultiMap<Object, Term> typed = new MultiMap<Object, Term>();
for (Term t : constants) {
typed.put(t.type() == null ? Sugar.NIL : t.type(), t);
}
for (Map.Entry<Object, Set<Term>> entry : typed.entrySet()) {
interchangeable.put(entry.getKey(), entry.getValue());
}
}
private static boolean sameType(Term a, Term b) {
if (a.type() == null && b.type() == null) {
return true;
} else if ((a.type() == null && b.type() != null) || (a.type() != null && b.type() == null)) {
return false;
} else {
return a.type().equals(b.type());
}
}