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comparison org.eclipse.core.databinding.beans/src/org/eclipse/core/internal/databinding/beans/IdentityWrapper.d @ 95:6208d4f6a277

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Added trees for databinding.beans and observable
author Frank Benoit <benoit@tionex.de>
date Tue, 21 Apr 2009 10:55:51 +0200
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children b74ac5dfcc06
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94:1d37a7813832 95:6208d4f6a277
1 /*******************************************************************************
2 * Copyright (c) 2006, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Daniel Kruegler - bug 137435
11 *******************************************************************************/
12
13 package org.eclipse.core.internal.databinding.beans;
14
15 /**
16 * Used for wrapping objects that define their own implementations of equals()
17 * and hashCode() when putting them in sets or hashmaps to ensure identity
18 * comparison.
19 *
20 * @since 1.0
21 *
22 */
23 public class IdentityWrapper {
24 final Object o;
25
26 /**
27 * @param o
28 */
29 public this(Object o) {
30 this.o = o;
31 }
32
33 /**
34 * @return the unwrapped object
35 */
36 public Object unwrap() {
37 return o;
38 }
39
40 public override equals_t opEquals(Object obj) {
41 if (obj is null || obj.getClass() !is IdentityWrapper.class) {
42 return false;
43 }
44 return o is (cast(IdentityWrapper) obj).o;
45 }
46
47 public override hash_t toHash() {
48 return System.identityHashCode(o);
49 }
50 }