68 lines
1.8 KiB
Java
68 lines
1.8 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.ipa.callgraph.CGNode;
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/**
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* A pointer key which provides a unique set for each local in each call graph node.
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*/
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public class LocalPointerKey extends AbstractLocalPointerKey {
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private final CGNode node;
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private final int valueNumber;
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public LocalPointerKey(CGNode node, int valueNumber) {
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super();
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this.node = node;
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this.valueNumber = valueNumber;
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if (valueNumber <= 0) {
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throw new IllegalArgumentException("illegal valueNumber: " + valueNumber);
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}
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if (node == null) {
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throw new IllegalArgumentException("null node");
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}
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}
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@Override
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public final boolean equals(Object obj) {
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if (obj instanceof LocalPointerKey) {
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LocalPointerKey other = (LocalPointerKey) obj;
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return node.equals(other.node) && valueNumber == other.valueNumber;
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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 final int hashCode() {
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return node.hashCode() * 23 + valueNumber;
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}
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@Override
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public String toString() {
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return "[" + node + ", v" + valueNumber + "]";
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}
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@Override
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public final CGNode getNode() {
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return node;
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}
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public final int getValueNumber() {
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return valueNumber;
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}
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public final boolean isParameter() {
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return valueNumber <= node.getMethod().getNumberOfParameters();
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}
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}
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