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 rules.
27 */
28 public class SwitchRuleHandler extends AbstractExpressionHandler {
29
30 /**
31 * The child elements of a switch rule.
32 */
33 private static final int[] SWITCH_RULE_CHILDREN = {
34 TokenTypes.LITERAL_CASE,
35 TokenTypes.LITERAL_DEFAULT,
36 };
37
38 /**
39 * Construct an instance of this handler with the given indentation check,
40 * abstract syntax tree, and parent handler.
41 *
42 * @param indentCheck the indentation check
43 * @param expr the abstract syntax tree
44 * @param parent the parent handler
45 */
46 public SwitchRuleHandler(IndentationCheck indentCheck,
47 DetailAST expr, AbstractExpressionHandler parent) {
48 super(indentCheck, "case", expr, parent);
49 }
50
51 @Override
52 protected IndentLevel getIndentImpl() {
53 return new IndentLevel(getParent().getIndent(),
54 getIndentCheck().getCaseIndent());
55 }
56
57 /**
58 * Check the indentation of the case statement.
59 */
60 private void checkCase() {
61 checkChildren(getMainAst(), SWITCH_RULE_CHILDREN, getIndent(),
62 true, false);
63 }
64
65 @Override
66 public IndentLevel getSuggestedChildIndent(AbstractExpressionHandler child) {
67 return getIndent();
68 }
69
70 @Override
71 public void checkIndentation() {
72 checkCase();
73 }
74
75 }