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1 /*******************************************************************************
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2 * Copyright (c) 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Daniel Kruegler - bug 137435
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11 ******************************************************************************/
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12
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13 module org.eclipse.core.internal.databinding.IdentityWrapper;
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14
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15 import java.lang.all;
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16
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17 /**
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18 * Used for wrapping objects that define their own implementations of equals()
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19 * and hashCode() when putting them in sets or hashmaps to ensure identity
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20 * comparison.
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21 *
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22 * @since 1.0
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23 *
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24 */
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25 public class IdentityWrapper {
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26 final Object o;
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27
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28 /**
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29 * @param o
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30 */
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31 public this(Object o) {
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32 this.o = o;
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33 }
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34
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35 /**
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36 * @return the unwrapped object
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37 */
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38 public Object unwrap() {
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39 return o;
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40 }
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41
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42 public override bool opEquals(Object obj) {
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43 if (obj is null || obj.getClass() !is IdentityWrapper.classinfo) {
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44 return false;
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45 }
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46 return o is (cast(IdentityWrapper) obj).o;
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47 }
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48
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49 public int hashCode() {
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50 return System.identityHashCode(o);
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51 }
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52 }
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