77       for (Enumeration e = all(); e.hasMoreElements(); )  in is_subset_of()
78     if (!other.contains((symbol)e.nextElement()))  in is_subset_of()
139       for (Enumeration e = other.all(); e.hasMoreElements(); )  in add()
140     result = add((symbol)e.nextElement()) || result;  in add()
155       for (Enumeration e = other.all(); e.hasMoreElements(); )  in remove()
156     remove((symbol)e.nextElement());  in remove()
169       } catch (internal_error e) {  in equals()
171     e.crash();  in equals()
194       Enumeration e;  in hashCode()  local
197       for (e = all(), cnt=0 ; e.hasMoreElements() && cnt<5; cnt++)  in hashCode()
198     result ^= ((symbol)e.nextElement()).hashCode();  in hashCode()
213       for (Enumeration e = all(); e.hasMoreElements(); )  in toString()
220       result += ((symbol)e.nextElement()).name();  in toString()