001//////////////////////////////////////////////////////////////////////////////// 002// checkstyle: Checks Java source code for adherence to a set of rules. 003// Copyright (C) 2001-2014 Oliver Burn 004// 005// This library is free software; you can redistribute it and/or 006// modify it under the terms of the GNU Lesser General Public 007// License as published by the Free Software Foundation; either 008// version 2.1 of the License, or (at your option) any later version. 009// 010// This library is distributed in the hope that it will be useful, 011// but WITHOUT ANY WARRANTY; without even the implied warranty of 012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013// Lesser General Public License for more details. 014// 015// You should have received a copy of the GNU Lesser General Public 016// License along with this library; if not, write to the Free Software 017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018//////////////////////////////////////////////////////////////////////////////// 019package com.puppycrawl.tools.checkstyle.checks.metrics; 020 021import com.puppycrawl.tools.checkstyle.api.TokenTypes; 022 023/** 024 * The number of other classes a given class relies on. Also the square 025 * of this has been shown to indicate the amount of maintenance required 026 * in functional programs (on a file basis) at least. 027 * 028 * @author <a href="mailto:simon@redhillconsulting.com.au">Simon Harris</a> 029 * @author o_sukhodolsky 030 */ 031public final class ClassFanOutComplexityCheck extends AbstractClassCouplingCheck 032{ 033 /** default value of max value. */ 034 private static final int DEFAULT_MAX = 20; 035 036 /** Creates new instance of this check. */ 037 public ClassFanOutComplexityCheck() 038 { 039 super(DEFAULT_MAX); 040 } 041 042 @Override 043 public int[] getRequiredTokens() 044 { 045 return new int[] { 046 TokenTypes.PACKAGE_DEF, 047 TokenTypes.CLASS_DEF, 048 TokenTypes.INTERFACE_DEF, 049 TokenTypes.ENUM_DEF, 050 TokenTypes.TYPE, 051 TokenTypes.LITERAL_NEW, 052 TokenTypes.LITERAL_THROWS, 053 TokenTypes.ANNOTATION_DEF, 054 }; 055 } 056 057 @Override 058 protected String getLogMessageId() 059 { 060 return "classFanOutComplexity"; 061 } 062}