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 case statements. 027 * 028 */ 029public class CaseHandler extends AbstractExpressionHandler { 030 031 /** 032 * The child elements of a case expression. 033 */ 034 private static final int[] CASE_CHILDREN = { 035 TokenTypes.LITERAL_CASE, 036 TokenTypes.LITERAL_DEFAULT, 037 }; 038 039 /** 040 * Construct an instance of this handler with the given indentation check, 041 * abstract syntax tree, and parent handler. 042 * 043 * @param indentCheck the indentation check 044 * @param expr the abstract syntax tree 045 * @param parent the parent handler 046 */ 047 public CaseHandler(IndentationCheck indentCheck, 048 DetailAST expr, AbstractExpressionHandler parent) { 049 super(indentCheck, "case", expr, parent); 050 } 051 052 @Override 053 protected IndentLevel getIndentImpl() { 054 return new IndentLevel(getParent().getIndent(), 055 getIndentCheck().getCaseIndent()); 056 } 057 058 /** 059 * Check the indentation of the case statement. 060 */ 061 private void checkCase() { 062 checkChildren(getMainAst(), CASE_CHILDREN, getIndent(), true, false); 063 } 064 065 @Override 066 public IndentLevel getSuggestedChildIndent(AbstractExpressionHandler child) { 067 return getIndent(); 068 } 069 070 @Override 071 public void checkIndentation() { 072 checkCase(); 073 } 074 075}