gevalinstrsub_seq.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.
 */


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

import org.tzi.use.gen.assl.statics.GInstrSub_Seq;
import org.tzi.use.uml.ocl.value.Value;
import org.tzi.use.uml.ocl.value.SequenceValue;

import java.util.Collection;
import java.util.ArrayList;
import java.util.Iterator;

/**
 * March 22th 2001 
 * @author  Joern Bohling
 */
class GEvalInstrSub_Seq extends GEvalInstruction implements IGCaller {
    private GInstrSub_Seq fInstr;
    private IGCaller fCaller;

    public GEvalInstrSub_Seq(GInstrSub_Seq instr ) {
        fInstr = instr;
    }

    public void eval(GConfiguration conf,
                     IGCaller caller,
                     IGCollector collector) throws GEvaluationException {
        collector.detailPrintWriter().println("evaluating `" + fInstr + "'");
        fCaller = caller;
        GCreator.createFor(fInstr.sequenceInstr()).eval(conf,this,collector );
    }

    public void feedback( GConfiguration conf,
                          Value value,
                          IGCollector collector ) throws GEvaluationException {
        if (value.isUndefined())
            collector.invalid(buildCantExecuteMessage(fInstr,
                                                      fInstr.sequenceInstr()));
        else {
            SequenceValue seq = (SequenceValue) value;
            Iterator it = seq.iterator();

            Collection values = new ArrayList( seq.size() );
            while (it.hasNext())
                if (conf.random().nextBoolean() )
                    values.add( it.next() );
                else
                    it.next();
            Value subVal = new SequenceValue(seq.elemType(), values);
            collector.detailPrintWriter().println(
                                                  "`"+ fInstr + "' == " +subVal );
            fCaller.feedback( conf, subVal, collector );
        }
    }

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

}