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