/* $Id: EvaluateInvariant.java 17836 2010-01-12 19:06:55Z linus $
*****************************************************************************
* Copyright (c) 2009 Contributors - see below
* 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:
* tfmorris
*****************************************************************************
*
* Some portions of this file was previously release using the BSD License:
*/
// Copyright (c) 2008 The Regents of the University of California. All
// Rights Reserved. Permission to use, copy, modify, and distribute this
// software and its documentation without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph appear in all copies. This software program and
// documentation are copyrighted by The Regents of the University of
// California. The software program and documentation are supplied "AS
// IS", without any accompanying services from The Regents. The Regents
// does not warrant that the operation of the program will be
// uninterrupted or error-free. The end-user understands that the program
// was developed for research purposes and is advised not to rely
// exclusively on the program for any reason. IN NO EVENT SHALL THE
// UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
// SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS,
// ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
// THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
// PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
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package org.argouml.profile.internal.ocl;
import tudresden.ocl.parser.analysis.DepthFirstAdapter;
import tudresden.ocl.parser.node.AConstraint;
import tudresden.ocl.parser.node.PConstraintBody;
/**
* Evaluates OCL invariants, this class should not depend on the model
* subsystem.
*
* @author maurelio1234
*/
public class EvaluateInvariant extends DepthFirstAdapter {
/**
* Is this invariant satified?
*/
private boolean ok = true;
/**
* The Expression Evaluator
*/
private EvaluateExpression expEvaluator = null;
private Object modelElement;
private ModelInterpreter mi;
/**
* Constructor
*
* @param element self
* @param interpreter model interpreter
*/
public EvaluateInvariant(Object element, ModelInterpreter interpreter) {
this.modelElement = element;
this.mi = interpreter;
this.expEvaluator = new EvaluateExpression(element, interpreter);
}
/**
* @return is the invariant ok?
*/
public boolean isOK() {
return ok;
}
/** Interpreter Code * */
/*
* @see tudresden.ocl.parser.analysis.DepthFirstAdapter#caseAConstraint(tudresden.ocl.parser.node.AConstraint)
*/
@Override
public void caseAConstraint(AConstraint node) {
inAConstraint(node);
if (node.getContextDeclaration() != null) {
node.getContextDeclaration().apply(this);
}
{
boolean localOk = true;
Object temp[] = node.getConstraintBody().toArray();
for (int i = 0; i < temp.length; i++) {
expEvaluator.reset(modelElement, mi);
((PConstraintBody) temp[i]).apply(expEvaluator);
Object val = expEvaluator.getValue();
localOk &= val != null && (val instanceof Boolean)
&& (Boolean) val;
}
ok = localOk;
}
outAConstraint(node);
}
}