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.decorators;
021    
022    import org.sonar.api.batch.Decorator;
023    import org.sonar.api.batch.DecoratorContext;
024    import org.sonar.api.batch.DependedUpon;
025    import org.sonar.api.batch.DependsUpon;
026    import org.sonar.api.measures.*;
027    import org.sonar.api.resources.Java;
028    import org.sonar.api.resources.Project;
029    import org.sonar.api.resources.Resource;
030    import org.sonar.api.resources.Scopes;
031    import org.sonar.java.api.JavaMethod;
032    
033    /**
034     * @since 2.6
035     */
036    public final class FunctionComplexityDistributionBuilder implements Decorator {
037    
038      private static final Number[] LIMITS = { 1, 2, 4, 6, 8, 10, 12 };
039    
040      @DependsUpon
041      public Metric dependOnComplexity() {
042        return CoreMetrics.COMPLEXITY;
043      }
044    
045      @DependedUpon
046      public Metric generatesFunctionComplexityDistribution() {
047        return CoreMetrics.FUNCTION_COMPLEXITY_DISTRIBUTION;
048      }
049    
050      public void decorate(Resource resource, DecoratorContext context) {
051        if (shouldExecuteOn(resource, context)) {
052          RangeDistributionBuilder builder = new RangeDistributionBuilder(CoreMetrics.FUNCTION_COMPLEXITY_DISTRIBUTION, LIMITS);
053          for (DecoratorContext childContext : context.getChildren()) {
054            if (childContext.getResource() instanceof JavaMethod) {
055              JavaMethod javaMethod = (JavaMethod) childContext.getResource();
056              Measure complexity = childContext.getMeasure(CoreMetrics.COMPLEXITY);
057              if (!javaMethod.isAccessor() && complexity != null) {
058                builder.add(complexity.getValue());
059              }
060            }
061          }
062          Measure measure = builder.build(true);
063          measure.setPersistenceMode(PersistenceMode.MEMORY);
064          context.saveMeasure(measure);
065        }
066      }
067    
068      boolean shouldExecuteOn(Resource resource, DecoratorContext context) {
069        return Scopes.isProgramUnit(resource) && context.getMeasure(CoreMetrics.COMPLEXITY) != null;
070      }
071    
072      public boolean shouldExecuteOnProject(Project project) {
073        return Java.KEY.equals(project.getLanguageKey());
074      }
075    }