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.coding; 020 021import com.puppycrawl.tools.checkstyle.api.DetailAST; 022import com.puppycrawl.tools.checkstyle.api.TokenTypes; 023 024import com.puppycrawl.tools.checkstyle.checks.DescendantTokenCheck; 025 026/** 027 * <p> 028 * Checks that classes (except abstract one) define a ctor and don't rely 029 * on the default one. 030 * </p> 031 * <p> 032 * An example of how to configure the check is: 033 * </p> 034 * <pre> 035 * <module name="MissingCtor"/> 036 * </pre> 037 * 038 * @author o_sukhodolsky 039 */ 040public class MissingCtorCheck extends DescendantTokenCheck 041{ 042 /** Creates new instance of the check. */ 043 public MissingCtorCheck() 044 { 045 setLimitedTokens(new String[] { 046 TokenTypes.getTokenName(TokenTypes.CTOR_DEF), 047 }); 048 setMinimumNumber(1); 049 setMaximumDepth(2); 050 setMinimumMessage("missing.ctor"); 051 } 052 053 @Override 054 public int[] getDefaultTokens() 055 { 056 return new int[]{TokenTypes.CLASS_DEF}; 057 } 058 059 @Override 060 public int[] getAcceptableTokens() 061 { 062 return getDefaultTokens(); 063 } 064 065 @Override 066 public void visitToken(DetailAST ast) 067 { 068 final DetailAST modifiers = ast.findFirstToken(TokenTypes.MODIFIERS); 069 if ((modifiers != null) 070 && modifiers.branchContains(TokenTypes.ABSTRACT)) 071 { 072 // should apply the check to abstract class 073 return; 074 } 075 076 super.visitToken(ast); 077 } 078}