1 cananian 1.1.2.1 // INObject.java, created Thu Dec 31 17:25:09 1998 by cananian
2 cananian 1.1.2.4 // Copyright (C) 1998 C. Scott Ananian <cananian@alumni.princeton.edu>
3 cananian 1.1.2.4 // Licensed under the terms of the GNU GPL; see COPYING for details.
4 cananian 1.1.2.1 package harpoon.Interpret.Quads;
5 cananian 1.1.2.1
6 cananian 1.1.2.2 import harpoon.ClassFile.HClass;
7 cananian 1.1.2.2 import harpoon.ClassFile.HMethod;
8 cananian 1.1.2.1
9 cananian 1.1.2.1 /**
10 cananian 1.1.2.1 * <code>INObject</code> provides implementations of the native methods in
11 cananian 1.1.2.1 * <code>java.lang.Object</code>.
12 cananian 1.1.2.1 *
13 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu>
14 cananian 1.2 * @version $Id: INObject.java,v 1.2 2002/02/25 21:05:46 cananian Exp $
15 cananian 1.1.2.1 */
16 cananian 1.1.2.6 public class INObject {
17 cananian 1.1.2.1 static final void register(StaticState ss) {
18 cananian 1.1.2.6 ss.register(_getClass_(ss));
19 cananian 1.1.2.6 ss.register(_hashCode_(ss));
20 cananian 1.1.2.6 ss.register(_clone_(ss));
21 cananian 1.1.2.5 // JDK 1.2 only
22 cananian 1.1.2.6 try { ss.register(registerNatives(ss)); } catch (NoSuchMethodError e){}
23 cananian 1.1.2.1 }
24 cananian 1.1.2.1 // Object.getClass()
25 cananian 1.1.2.6 private static final NativeMethod _getClass_(StaticState ss0) {
26 cananian 1.1.2.6 final HMethod hm = ss0.HCobject.getMethod("getClass", new HClass[0]);
27 cananian 1.1.2.1 return new NativeMethod() {
28 cananian 1.1.2.1 HMethod getMethod() { return hm; }
29 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
30 cananian 1.1.2.3 Ref obj = (Ref) params[0];
31 cananian 1.1.2.1 return INClass.forClass(ss, obj.type);
32 cananian 1.1.2.1 }
33 cananian 1.1.2.1 };
34 cananian 1.1.2.1 }
35 cananian 1.1.2.1 // Object.hashCode()
36 cananian 1.1.2.6 private static final NativeMethod _hashCode_(StaticState ss0) {
37 cananian 1.1.2.6 final HMethod hm = ss0.HCobject.getMethod("hashCode", new HClass[0]);
38 cananian 1.1.2.1 return new NativeMethod() {
39 cananian 1.1.2.1 HMethod getMethod() { return hm; }
40 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
41 cananian 1.1.2.3 Ref obj = (Ref) params[0];
42 cananian 1.1.2.1 return new Integer(obj.hashCode());
43 cananian 1.1.2.1 }
44 cananian 1.1.2.1 };
45 cananian 1.1.2.1 }
46 cananian 1.1.2.1 // Object.clone()
47 cananian 1.1.2.6 private static final NativeMethod _clone_(StaticState ss0) {
48 cananian 1.1.2.6 final HMethod hm = ss0.HCobject.getMethod("clone", new HClass[0]);
49 cananian 1.1.2.1 return new NativeMethod() {
50 cananian 1.1.2.1 HMethod getMethod() { return hm; }
51 cananian 1.1.2.1 Object invoke(StaticState ss, Object[] params) {
52 cananian 1.1.2.3 Ref obj = (Ref) params[0];
53 cananian 1.1.2.1 // throw exception if doesn't implement Cloneable
54 cananian 1.1.2.6 if (!obj.type.isInstanceOf(ss.HCcloneable)) {
55 cananian 1.1.2.6 obj = ss.makeThrowable(ss.HCclonenotsupportedE,
56 cananian 1.1.2.1 obj.type.toString());
57 cananian 1.1.2.3 throw new InterpretedThrowable((ObjectRef)obj, ss);
58 cananian 1.1.2.1 }
59 cananian 1.1.2.1 return obj.clone();
60 cananian 1.1.2.1 }
61 cananian 1.1.2.1 };
62 cananian 1.1.2.5 }
63 cananian 1.1.2.5 // JDK 1.2 only: Object.registerNatives()
64 cananian 1.1.2.6 private static final NativeMethod registerNatives(StaticState ss0) {
65 cananian 1.1.2.5 final HMethod hm =
66 cananian 1.1.2.6 ss0.HCobject.getMethod("registerNatives",new HClass[0]);
67 cananian 1.1.2.5 return new NullNativeMethod(hm);
68 cananian 1.1.2.1 }
69 cananian 1.2 }