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comparison graal/com.oracle.truffle.api.object/src/com/oracle/truffle/api/object/ObjectType.java @ 18407:f439fdb137a3

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Truffle: initial commit of object API
author Andreas Woess <andreas.woess@jku.at>
date Tue, 18 Nov 2014 16:18:45 +0100
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children 6db7923af642
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18406:194041c3fdab 18407:f439fdb137a3
1 /*
2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package com.oracle.truffle.api.object;
26
27 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
28
29 public class ObjectType {
30 /**
31 * Delegate method for {@link DynamicObject#equals(Object)}.
32 */
33 public boolean equals(DynamicObject object, Object other) {
34 return object == other;
35 }
36
37 /**
38 * Delegate method for {@link DynamicObject#hashCode()}.
39 */
40 public int hashCode(DynamicObject object) {
41 return System.identityHashCode(object);
42 }
43
44 /**
45 * Delegate method for {@link DynamicObject#toString()}.
46 */
47 @TruffleBoundary
48 public String toString(DynamicObject object) {
49 return "DynamicObject<" + this.toString() + ">@" + Integer.toHexString(hashCode(object));
50 }
51
52 /**
53 * Creates a data object to be associated with a newly created shape.
54 *
55 * @param shape the shape for which to create the data object
56 */
57 public Object createShapeData(Shape shape) {
58 return null;
59 }
60
61 /**
62 * Called when a new property is added to a shape.
63 *
64 * @param property the added property
65 * @param shapeBefore shape before the property was added
66 * @param shapeAfter shape after the property was added
67 */
68 public void onPropertyAdded(Property property, Shape shapeBefore, Shape shapeAfter) {
69 }
70 }