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.indentation; 020 021import com.puppycrawl.tools.checkstyle.api.DetailAST; 022import com.puppycrawl.tools.checkstyle.api.TokenTypes; 023 024/** 025 * Handler for else blocks. 026 * 027 * @author jrichard 028 */ 029public class ElseHandler extends BlockParentHandler 030{ 031 /** 032 * Construct an instance of this handler with the given indentation check, 033 * abstract syntax tree, and parent handler. 034 * 035 * @param indentCheck the indentation check 036 * @param ast the abstract syntax tree 037 * @param parent the parent handler 038 */ 039 public ElseHandler(IndentationCheck indentCheck, 040 DetailAST ast, ExpressionHandler parent) 041 { 042 super(indentCheck, "else", ast, parent); 043 } 044 045 @Override 046 protected void checkToplevelToken() 047 { 048 // check if else is nested with rcurly of if: 049 // 050 // } else ... 051 052 final DetailAST ifAST = getMainAst().getParent(); 053 if (ifAST != null) { 054 final DetailAST slist = ifAST.findFirstToken(TokenTypes.SLIST); 055 if (slist != null) { 056 final DetailAST lcurly = slist.getLastChild(); 057 if ((lcurly != null) 058 && (lcurly.getLineNo() == getMainAst().getLineNo())) 059 { 060 // indentation checked as part of LITERAL IF check 061 return; 062 } 063 } 064 } 065 super.checkToplevelToken(); 066 } 067 068 @Override 069 protected DetailAST getNonlistChild() 070 { 071 return getMainAst().getFirstChild(); 072 } 073}