001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2012 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.plugins.squid.bridges;
021    
022    import org.sonar.api.measures.CoreMetrics;
023    import org.sonar.api.resources.Resource;
024    import org.sonar.squid.api.SourceFile;
025    import org.sonar.squid.measures.Metric;
026    
027    public class ChidamberKemererBridge extends Bridge {
028    
029      protected ChidamberKemererBridge() {
030        super(true);
031      }
032    
033      @Override
034      public final void onFile(SourceFile squidFile, Resource sonarFile) {
035        context.saveMeasure(sonarFile, CoreMetrics.DEPTH_IN_TREE, squidFile.getDouble(Metric.DIT));
036        context.saveMeasure(sonarFile, CoreMetrics.NUMBER_OF_CHILDREN, squidFile.getDouble(Metric.NOC));
037        context.saveMeasure(sonarFile, CoreMetrics.RFC, squidFile.getDouble(Metric.RFC));
038        context.saveMeasure(sonarFile, CoreMetrics.LCOM4, getLcom4(squidFile));
039      }
040    
041      static double getLcom4(SourceFile squidFile) {
042        // Squid API does not support null values, so sometimes it returns LCOM4 values with value 0. It occurs
043        // for example with files without any classes, like package-info.java.
044        // Minimum value must be 1.
045        return Math.max(squidFile.getDouble(Metric.LCOM4), 1.0);
046      }
047    }