001/////////////////////////////////////////////////////////////////////////////////////////////// 002// checkstyle: Checks Java source code and other text files for adherence to a set of rules. 003// Copyright (C) 2001-2024 the original author or authors. 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/////////////////////////////////////////////////////////////////////////////////////////////// 019 020package com.puppycrawl.tools.checkstyle.checks.indentation; 021 022import com.puppycrawl.tools.checkstyle.api.DetailAST; 023import com.puppycrawl.tools.checkstyle.api.TokenTypes; 024 025/** 026 * Handler for do...while blocks. 027 * 028 */ 029public class DoWhileHandler 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 DoWhileHandler(IndentationCheck indentCheck, 040 DetailAST ast, AbstractExpressionHandler parent) { 041 super(indentCheck, "do..while", ast, parent); 042 } 043 044 /** 045 * Check the indentation level of the while and conditional expression. 046 */ 047 private void checkWhileExpr() { 048 // check while statement alone 049 050 final DetailAST whileAst = getMainAst().findFirstToken(TokenTypes.DO_WHILE); 051 052 if (isOnStartOfLine(whileAst) 053 && !getIndent().isAcceptable(expandedTabsColumnNo(whileAst))) { 054 logError(whileAst, "while", expandedTabsColumnNo(whileAst)); 055 } 056 057 // check condition alone 058 059 final DetailAST condAst = getMainAst().findFirstToken(TokenTypes.LPAREN).getNextSibling(); 060 061 checkExpressionSubtree(condAst, getIndent(), false, false); 062 } 063 064 @Override 065 protected DetailAST getNonListChild() { 066 return getMainAst().getFirstChild(); 067 } 068 069 @Override 070 public void checkIndentation() { 071 super.checkIndentation(); 072 checkWhileExpr(); 073 } 074 075}