code: ///////////////////////////////////////////////////////////////////////////////////////////////
  // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
  // Copyright (C) 2001-2023 the original author or authors.
  //
  // This library is free software; you can redistribute it and/or
  // modify it under the terms of the GNU Lesser General Public
  // License as published by the Free Software Foundation; either
  // version 2.1 of the License, or (at your option) any later version.
  //
  // This library is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ///////////////////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.checks.whitespace;
  
  import com.puppycrawl.tools.checkstyle.api.DetailAST;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  
  /**
   * <p>
   * Checks the policy on the padding of parentheses for typecasts. That is, whether a space
   * is required after a left parenthesis and before a right parenthesis, or such
   * spaces are forbidden.
   * </p>
   * <ul>
   * <li>
   * Property {@code option} - Specify policy on how to pad parentheses.
   * Type is {@code com.puppycrawl.tools.checkstyle.checks.whitespace.PadOption}.
   * Default value is {@code nospace}.
   * </li>
   * </ul>
   * <p>
   * To configure the check:
   * </p>
   * <pre>
   * &lt;module name=&quot;TypecastParenPad&quot;/&gt;
   * </pre>
   * <p>
   * Example:
   * </p>
   * <pre>
   * class Foo {
   *
   *   float f1 = 3.14f;
   *
   *   int n = ( int ) f1; // violation, space after left parenthesis and before right parenthesis
   *
   *   double d = 1.234567;
   *
   *   float f2 = (float ) d; // violation, space before right parenthesis
   *
   *   float f3 = (float) d; // OK
   *
   *   float f4 = ( float) d; // violation, space after left parenthesis
   *
   * }
   * </pre>
   * <p>
   * To configure the check to require spaces:
   * </p>
   * <pre>
   * &lt;module name=&quot;TypecastParenPad&quot;&gt;
   *   &lt;property name=&quot;option&quot; value=&quot;space&quot;/&gt;
   * &lt;/module&gt;
   * </pre>
   * <p>
   * Example:
   * </p>
   * <pre>
   * class Bar {
   *
   *   double d1 = 3.14;
   *
   *   int n = ( int ) d1; // OK
   *
   *   int m = (int ) d1; // violation, no space after left parenthesis
   *
   *   double d2 = 9.8;
   *
   *   int x = (int) d2; // violation, no space after left parenthesis and before right parenthesis
   *
   *   int y = ( int) d2; // violation, no space before right parenthesis
   *
   * }
   * </pre>
   * <p>
   * Parent is {@code com.puppycrawl.tools.checkstyle.TreeWalker}
   * </p>
   * <p>
   * Violation Message Keys:
   * </p>
   * <ul>
   * <li>
   * {@code ws.followed}
   * </li>
   * <li>
   * {@code ws.notFollowed}
   * </li>
   * <li>
   * {@code ws.notPreceded}
   * </li>
   * <li>
   * {@code ws.preceded}
   * </li>
   * </ul>
   *
   * @since 3.2
   */
  public class TypecastParenPadCheck extends AbstractParenPadCheck {
  
      @Override
      public int[] getRequiredTokens() {
          return new int[] {TokenTypes.RPAREN, TokenTypes.TYPECAST};
      }
  
      @Override
      public int[] getDefaultTokens() {
          return getRequiredTokens();
      }
  
      @Override
      public int[] getAcceptableTokens() {
          return getRequiredTokens();
      }
  
      @Override
      public void visitToken(DetailAST ast) {
          // Strange logic in this method to guard against checking RPAREN tokens
          // that are not associated with a TYPECAST token.
          if (ast.getType() == TokenTypes.TYPECAST) {
              processLeft(ast);
          }
          else if (ast.getParent().getType() == TokenTypes.TYPECAST
                   && ast.getParent().findFirstToken(TokenTypes.RPAREN) == ast) {
              processRight(ast);
          }
      }
  
  }
  