gevalprocedure.java

UML设计测试工具

/*
 * This is source code of the Snapshot Generator, an extension for USE
 * to generate (valid) system states of UML models.
 * Copyright (C) 2001 Joern Bohling, University of Bremen
 *
 * About USE:
 *   USE - UML based specification environment
 *   Copyright (C) 1999,2000,2001 Mark Richters, University of Bremen
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/**
 * March 22th 2001 
 * @author  Joern Bohling
 */

package org.tzi.use.gen.assl.dynamics;

import org.tzi.use.gen.assl.statics.GProcedure;
import org.tzi.use.uml.sys.MSystemState;
import org.tzi.use.uml.ocl.value.VarBindings;
import org.tzi.use.uml.ocl.expr.VarDecl;
import org.tzi.use.uml.ocl.value.Value;
import org.tzi.use.uml.ocl.value.UndefinedValue;

import org.tzi.use.uml.ocl.expr.MultiplicityViolationException;

import java.util.Iterator;
import java.util.List;

public class GEvalProcedure implements IGCaller {
    private GProcedure fProcedure;
    private IGChecker fChecker;
  
    public GEvalProcedure( GProcedure proc ) {
        fProcedure = proc;
    }

    public void eval(List paramValues,
                     MSystemState state,
                     IGCollector collector,
                     IGChecker checker,
                     long randomNr) throws GEvaluationException {
        collector.detailPrintWriter().println("evaluating `" + fProcedure + "'");
        fChecker = checker;
        VarBindings varBindings = new VarBindings();
        Iterator declIt;
        declIt = fProcedure.parameterDecls().iterator();
        Iterator valuesIt = paramValues.iterator();
        while (declIt.hasNext()) {
            String varName = ((VarDecl) declIt.next()).name();
            Value value = (Value) valuesIt.next();
            varBindings.push(varName, value);
            collector.detailPrintWriter().println( varName + ":=" + value );
        }
        declIt = fProcedure.localDecls().iterator();
        while (declIt.hasNext()) {
            VarDecl localDecl = (VarDecl) declIt.next();
            Value value = new UndefinedValue(localDecl.type());
            varBindings.push(localDecl.name(), value);
            collector.detailPrintWriter().println(localDecl.name() + ":=" + value);
        }
        GConfiguration conf = new GConfiguration( state,
                                                  varBindings,
                                                  randomNr );
        GCreator.createFor( fProcedure.instructionList() )
            .eval( conf, this, collector );       // just delegation
    }
    
    public void feedback( GConfiguration conf,
                          Value value,
                          IGCollector collector ) throws GEvaluationException {
        // value is not relevant
        collector.leaf();
        try {
            if (fChecker.check(conf.systemState(),
                               collector.basicPrintWriter())) {
                collector.setValidStateFound();
            }
        } catch (MultiplicityViolationException e) {
            collector.detailPrintWriter().println("An error occured while checking an invariant:");
            collector.detailPrintWriter().println(e.getMessage());
        }
    }

    public String toString() {
        return "GEvalProcedure";
    }

}