01: /* Soot - a J*va Optimization Framework
02: * Copyright (C) 2000 Patrick Lam
03: *
04: * This library is free software; you can redistribute it and/or
05: * modify it under the terms of the GNU Lesser General Public
06: * License as published by the Free Software Foundation; either
07: * version 2.1 of the License, or (at your option) any later version.
08: *
09: * This library is distributed in the hope that it will be useful,
10: * but WITHOUT ANY WARRANTY; without even the implied warranty of
11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12: * Lesser General Public License for more details.
13: *
14: * You should have received a copy of the GNU Lesser General Public
15: * License along with this library; if not, write to the
16: * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17: * Boston, MA 02111-1307, USA.
18: */
19:
20: /*
21: * Modified by the Sable Research Group and others 1997-1999.
22: * See the 'credits' file distributed with Soot for the complete list of
23: * contributors. (Soot is distributed at http://www.sable.mcgill.ca/soot)
24: */
25:
26: package soot.util;
27:
28: /** This class implements an ArrayList where the
29: * equality and hashCode use object equality, not list
30: * equality. This is important for putting Lists into HashMaps.
31: *
32: * The notation "Stationary" refers to the fact that the List
33: * stays "fixed" under list changes. */
34: public class StationaryArrayList extends java.util.ArrayList {
35: public int hashCode() {
36: return System.identityHashCode(this );
37: }
38:
39: public boolean equals(Object other) {
40: return this == other;
41: }
42: }
|