/*******************************************************************************
* 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.fixpoint;
/**
* operator for a step in an iterative solver
*
* This is an abstract class and not an interface in order to force subclasses to re-implement equals(), hashCode(), and toString()
*/
@SuppressWarnings("rawtypes")
public abstract class AbstractOperator<T extends IVariable> implements FixedPointConstants {
/**
* Evaluate this equation, setting a new value for the left-hand side.
*
* @return a code that indicates: 1) has the lhs value changed? 2) has this equation reached a fixed-point, in that we never have
* to evaluate the equation again, even if rhs operands change?
*/
public abstract byte evaluate(T lhs, T[] rhs);
@Override
public abstract int hashCode();
@Override
public abstract boolean equals(Object o);
@Override
public abstract String toString();
}