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 while loops. 027 * 028 */ 029public class WhileHandler 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 WhileHandler(IndentationCheck indentCheck, 040 DetailAST ast, AbstractExpressionHandler parent) { 041 super(indentCheck, "while", ast, parent); 042 } 043 044 /** 045 * Check the indentation of the conditional expression. 046 */ 047 private void checkCondExpr() { 048 final DetailAST condAst = getMainAst().findFirstToken(TokenTypes.EXPR); 049 final IndentLevel expected = 050 new IndentLevel(getIndent(), getBasicOffset()); 051 checkExpressionSubtree(condAst, expected, false, false); 052 } 053 054 @Override 055 public void checkIndentation() { 056 checkCondExpr(); 057 super.checkIndentation(); 058 } 059 060}