WALA/com.ibm.wala.core/src/com/ibm/wala/ipa/callgraph/propagation/PointerKey.java

30 lines
1.3 KiB
Java

/*******************************************************************************
* 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;
/**
* A PointerKey instance serves as the representative for an equivalence class
* of pointers. (or more generally ...locations, if we allow primitives).
*
* For example, a PointerKey for 0-CFA might be - a <CGNode,int> pair, where the
* int represents an SSA value number. This PointerKey would represent all
* values of the pointer of a particular local variable. - a <FieldReference>,
* representing the set of instances of a given field in the heap, or of a
* particular static field.
*
* A PointerKey for 0-1-CFA, with 1-level of InstanceVar context in the Grove et
* al. terminology, would instead of FieldReference, use a - <InstanceKey,
* FieldReference> pair
*/
public interface PointerKey {
}