50 lines
1.4 KiB
Java
50 lines
1.4 KiB
Java
/*******************************************************************************
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* Copyright (c) 2002 - 2006 IBM Corporation.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package com.ibm.wala.ipa.callgraph.propagation;
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import com.ibm.wala.classLoader.IField;
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/**
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* An pointer key which represents a unique set for each static field.
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*/
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public final class StaticFieldKey extends AbstractPointerKey {
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private final IField field;
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public StaticFieldKey(IField field) {
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if (field == null) {
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throw new IllegalArgumentException("null field");
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}
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this.field = field;
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}
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@Override
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public boolean equals(Object obj) {
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// instanceof is OK because this class is final
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if (obj instanceof StaticFieldKey) {
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StaticFieldKey other = (StaticFieldKey) obj;
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return field.equals(other.field);
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} else {
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return false;
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}
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}
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@Override
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public int hashCode() {
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return 1889 * field.hashCode();
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}
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@Override
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public String toString() {
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return "[" + field + "]";
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}
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public IField getField() {
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return field;
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}
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}
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