Mercurial > hg > Members > kono > jpf-core
view src/main/gov/nasa/jpf/vm/choice/DoubleThresholdGenerator.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
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date | Fri, 23 Jan 2015 10:14:01 -0800 |
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children | fdc263e5806b |
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/* * Copyright (C) 2014, United States Government, as represented by the * Administrator of the National Aeronautics and Space Administration. * All rights reserved. * * The Java Pathfinder core (jpf-core) platform is licensed under the * Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package gov.nasa.jpf.vm.choice; import gov.nasa.jpf.Config; import gov.nasa.jpf.vm.ChoiceGeneratorBase; import gov.nasa.jpf.vm.DoubleChoiceGenerator; /** * ChoiceGenerator instance that produces a simple 3 value enumeration * */ public class DoubleThresholdGenerator extends ChoiceGeneratorBase<Double> implements DoubleChoiceGenerator { protected double[] values = new double[3]; protected int count; public DoubleThresholdGenerator(Config conf, String id) { super(id); values[0] = conf.getDouble(id + ".low"); values[1] = conf.getDouble(id + ".threshold"); values[2] = conf.getDouble(id + ".high"); count = -1; } @Override public void reset () { count = -1; isDone = false; } @Override public boolean hasMoreChoices () { return !isDone && (count < 2); } @Override public Double getNextChoice () { if (count >=0) { return new Double(values[count]); } else { return new Double(values[0]); } } @Override public void advance () { if (count < 2) count++; } @Override public int getTotalNumberOfChoices () { return 3; } @Override public int getProcessedNumberOfChoices () { return count + 1; } @Override public String toString() { StringBuilder sb = new StringBuilder(getClass().getName()); sb.append("[id=\""); sb.append(id); sb.append("\","); for (int i=0; i<3; i++) { if (count == i) { sb.append(MARKER); } sb.append(values[i]); if (count < 2) { sb.append(','); } } sb.append(']'); return sb.toString(); } @Override public DoubleThresholdGenerator randomize () { for (int i = values.length - 1; i > 0; i--) { int j = random.nextInt(i + 1); double tmp = values[i]; values[i] = values[j]; values[j] = tmp; } return this; } @Override public Class<Double> getChoiceType() { return Double.class; } }