2012-09-04 22:56:05 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
* Copyright (c) 2002 - 2006 IBM Corporation.
|
|
|
|
* All rights reserved. This program and the accompanying materials
|
|
|
|
* are made available under the terms of the Eclipse Public License v1.0
|
|
|
|
* which accompanies this distribution, and is available at
|
|
|
|
* http://www.eclipse.org/legal/epl-v10.html
|
|
|
|
*
|
|
|
|
* Contributors:
|
|
|
|
* IBM Corporation - initial API and implementation
|
|
|
|
*******************************************************************************/
|
|
|
|
package com.ibm.wala.ipa.callgraph.propagation;
|
|
|
|
|
|
|
|
import com.ibm.wala.ipa.callgraph.CGNode;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* A pointer key which provides a unique set for each local in each call graph node.
|
|
|
|
*/
|
|
|
|
public class LocalPointerKey extends AbstractLocalPointerKey {
|
|
|
|
private final CGNode node;
|
|
|
|
|
|
|
|
private final int valueNumber;
|
|
|
|
|
|
|
|
public LocalPointerKey(CGNode node, int valueNumber) {
|
|
|
|
super();
|
|
|
|
this.node = node;
|
|
|
|
this.valueNumber = valueNumber;
|
|
|
|
if (valueNumber <= 0) {
|
|
|
|
throw new IllegalArgumentException("illegal valueNumber: " + valueNumber);
|
|
|
|
}
|
|
|
|
if (node == null) {
|
|
|
|
throw new IllegalArgumentException("null node");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
@Override
|
|
|
|
public final boolean equals(Object obj) {
|
|
|
|
if (obj instanceof LocalPointerKey) {
|
|
|
|
LocalPointerKey other = (LocalPointerKey) obj;
|
|
|
|
return node.equals(other.node) && valueNumber == other.valueNumber;
|
|
|
|
} else {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
@Override
|
|
|
|
public final int hashCode() {
|
|
|
|
return node.hashCode() * 23 + valueNumber;
|
|
|
|
}
|
|
|
|
|
|
|
|
@Override
|
|
|
|
public String toString() {
|
|
|
|
return "[" + node + ", v" + valueNumber + "]";
|
|
|
|
}
|
|
|
|
|
|
|
|
@Override
|
|
|
|
public final CGNode getNode() {
|
|
|
|
return node;
|
|
|
|
}
|
|
|
|
|
|
|
|
public final int getValueNumber() {
|
|
|
|
return valueNumber;
|
|
|
|
}
|
|
|
|
|
|
|
|
public final boolean isParameter() {
|
|
|
|
return valueNumber <= node.getMethod().getNumberOfParameters();
|
|
|
|
}
|
|
|
|
}
|