1 ///////////////////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
3 // Copyright (C) 2001-2025 the original author or authors.
4 //
5 // This library is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU Lesser General Public
7 // License as published by the Free Software Foundation; either
8 // version 2.1 of the License, or (at your option) any later version.
9 //
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // Lesser General Public License for more details.
14 //
15 // You should have received a copy of the GNU Lesser General Public
16 // License along with this library; if not, write to the Free Software
17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 ///////////////////////////////////////////////////////////////////////////////////////////////
19
20 package com.puppycrawl.tools.checkstyle.checks.indentation;
21
22 import com.puppycrawl.tools.checkstyle.api.DetailAST;
23 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
24
25 /**
26 * Handler for do...while blocks.
27 *
28 */
29 public class DoWhileHandler extends BlockParentHandler {
30
31 /**
32 * Construct an instance of this handler with the given indentation check,
33 * abstract syntax tree, and parent handler.
34 *
35 * @param indentCheck the indentation check
36 * @param ast the abstract syntax tree
37 * @param parent the parent handler
38 */
39 public DoWhileHandler(IndentationCheck indentCheck,
40 DetailAST ast, AbstractExpressionHandler parent) {
41 super(indentCheck, "do..while", ast, parent);
42 }
43
44 /**
45 * Check the indentation level of the while and conditional expression.
46 */
47 private void checkWhileExpr() {
48 // check while statement alone
49
50 final DetailAST whileAst = getMainAst().findFirstToken(TokenTypes.DO_WHILE);
51
52 if (isOnStartOfLine(whileAst)
53 && !getIndent().isAcceptable(expandedTabsColumnNo(whileAst))) {
54 logError(whileAst, "while", expandedTabsColumnNo(whileAst));
55 }
56
57 // check condition alone
58
59 final DetailAST condAst = getMainAst().findFirstToken(TokenTypes.LPAREN).getNextSibling();
60
61 checkExpressionSubtree(condAst, getIndent(), false, false);
62 }
63
64 @Override
65 protected DetailAST getNonListChild() {
66 return getMainAst().getFirstChild();
67 }
68
69 @Override
70 public void checkIndentation() {
71 super.checkIndentation();
72 checkWhileExpr();
73 }
74
75 }