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
021package org.sonar.java.squid.check;
022
023import org.sonar.check.Priority;
024import org.sonar.check.Rule;
025import org.sonar.check.RuleProperty;
026import org.sonar.squid.api.CheckMessage;
027import org.sonar.squid.api.SourceFile;
028import org.sonar.squid.api.SourceMethod;
029import org.sonar.squid.measures.Metric;
030
031@Rule(key = "MethodCyclomaticComplexity", priority = Priority.MAJOR)
032public class MethodComplexityCheck extends SquidCheck {
033
034  public static final int DEFAULT_MAX = 10;
035
036  @RuleProperty(defaultValue = "" + DEFAULT_MAX)
037  private Integer max = DEFAULT_MAX;
038
039  @Override
040  public void visitMethod(SourceMethod sourceMethod) {
041    int complexity = sourceMethod.getInt(Metric.COMPLEXITY);
042    if (complexity > max) {
043      CheckMessage message = new CheckMessage(this, "The Cyclomatic Complexity of this method is " + complexity + " which is greater than "
044          + max + " authorized.");
045      message.setLine(sourceMethod.getStartAtLine());
046      message.setCost(complexity - max);
047      sourceMethod.getParent(SourceFile.class).log(message);
048    }
049  }
050
051  public void setMax(int max) {
052    this.max = max;
053  }
054
055}