001///////////////////////////////////////////////////////////////////////////////////////////////
002// checkstyle: Checks Java source code and other text files for adherence to a set of rules.
003// Copyright (C) 2001-2025 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.whitespace;
021
022import com.puppycrawl.tools.checkstyle.api.DetailAST;
023import com.puppycrawl.tools.checkstyle.api.TokenTypes;
024
025/**
026 * <div>
027 * Checks the policy on the padding of parentheses for typecasts. That is, whether a space
028 * is required after a left parenthesis and before a right parenthesis, or such
029 * spaces are forbidden.
030 * </div>
031 *
032 * @since 3.2
033 */
034public class TypecastParenPadCheck extends AbstractParenPadCheck {
035
036    @Override
037    public int[] getRequiredTokens() {
038        return new int[] {TokenTypes.RPAREN, TokenTypes.TYPECAST};
039    }
040
041    @Override
042    public int[] getDefaultTokens() {
043        return getRequiredTokens();
044    }
045
046    @Override
047    public int[] getAcceptableTokens() {
048        return getRequiredTokens();
049    }
050
051    @Override
052    public void visitToken(DetailAST ast) {
053        // Strange logic in this method to guard against checking RPAREN tokens
054        // that are not associated with a TYPECAST token.
055        if (ast.getType() == TokenTypes.TYPECAST) {
056            processLeft(ast);
057        }
058        else if (ast.getParent().getType() == TokenTypes.TYPECAST
059                 && ast.getParent().findFirstToken(TokenTypes.RPAREN) == ast) {
060            processRight(ast);
061        }
062    }
063
064}