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.indentation;
  
  import com.puppycrawl.tools.checkstyle.api.DetailAST;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  
  /**
   * Handler for inner classes.
   *
   */
  public class ObjectBlockHandler extends BlockParentHandler {
  
      /**
       * Construct an instance of this handler with the given indentation check,
       * abstract syntax tree, and parent handler.
       *
       * @param indentCheck   the indentation check
       * @param ast           the abstract syntax tree
       * @param parent        the parent handler
       */
      public ObjectBlockHandler(IndentationCheck indentCheck,
          DetailAST ast, AbstractExpressionHandler parent) {
          super(indentCheck, "object def", ast, parent);
      }
  
      @Override
      protected DetailAST getTopLevelAst() {
          return null;
      }
  
      @Override
      protected DetailAST getLeftCurly() {
          return getMainAst().findFirstToken(TokenTypes.LCURLY);
      }
  
      @Override
      protected DetailAST getRightCurly() {
          return getMainAst().findFirstToken(TokenTypes.RCURLY);
      }
  
      @Override
      protected DetailAST getListChild() {
          return getMainAst();
      }
  
      @Override
      protected IndentLevel getIndentImpl() {
          final DetailAST parentAST = getMainAst().getParent();
          IndentLevel indent = getParent().getIndent();
          if (parentAST.getType() == TokenTypes.LITERAL_NEW) {
              indent = IndentLevel.addAcceptable(indent, super.getIndentImpl());
          }
          else if (parentAST.getType() == TokenTypes.ENUM_CONSTANT_DEF) {
              indent = super.getIndentImpl();
          }
          return indent;
      }
  
      @Override
      public void checkIndentation() {
          // if we have a class or interface as a parent, don't do anything,
          // as this is checked by class def; so
          // only do this if we have a new for a parent (anonymous inner
          // class)
          final DetailAST parentAST = getMainAst().getParent();
          if (parentAST.getType() == TokenTypes.LITERAL_NEW) {
              super.checkIndentation();
          }
      }
  
      @Override
      protected IndentLevel curlyIndent() {
          final IndentLevel indent = super.curlyIndent();
          return IndentLevel.addAcceptable(indent, indent.getFirstIndentLevel()
                  + getLineWrappingIndentation());
      }
  
      /**
       * A shortcut for {@code IndentationCheck} property.
       *
       * @return value of lineWrappingIndentation property
       *         of {@code IndentationCheck}
       */
      private int getLineWrappingIndentation() {
          return getIndentCheck().getLineWrappingIndentation();
      }
  
  }
  