1 ///////////////////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
3 // Copyright (C) 2001-2024 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 switch statements.
27 *
28 */
29 public class SwitchHandler 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 SwitchHandler(IndentationCheck indentCheck,
40 DetailAST ast, AbstractExpressionHandler parent) {
41 super(indentCheck, "switch", ast, parent);
42 }
43
44 @Override
45 protected DetailAST getLeftCurly() {
46 return getMainAst().findFirstToken(TokenTypes.LCURLY);
47 }
48
49 @Override
50 protected DetailAST getRightCurly() {
51 return getMainAst().findFirstToken(TokenTypes.RCURLY);
52 }
53
54 @Override
55 protected DetailAST getListChild() {
56 // all children should be taken care of by case handler (plus
57 // there is no parent of just the cases, if checking is needed
58 // here in the future, an additional way beyond checkChildren()
59 // will have to be devised to get children)
60 return null;
61 }
62
63 @Override
64 protected DetailAST getNonListChild() {
65 return null;
66 }
67
68 /**
69 * Check the indentation of the switch expression.
70 */
71 private void checkSwitchExpr() {
72 checkExpressionSubtree(
73 getMainAst().findFirstToken(TokenTypes.LPAREN).getNextSibling(),
74 getIndent(),
75 false,
76 false);
77 }
78
79 @Override
80 public void checkIndentation() {
81 checkSwitchExpr();
82 super.checkIndentation();
83 }
84
85 }