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 array initialization blocks.
   *
   */
  public class ArrayInitHandler extends BlockParentHandler {
  
      /**
       * Constant to define that the required character does not exist at any position.
       */
      private static final int NOT_EXIST = -1;
  
      /**
       * 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 ArrayInitHandler(IndentationCheck indentCheck,
          DetailAST ast, AbstractExpressionHandler parent) {
          super(indentCheck, "array initialization", ast, parent);
      }
  
      @Override
      protected IndentLevel getIndentImpl() {
          final DetailAST parentAST = getMainAst().getParent();
          final int type = parentAST.getType();
          final IndentLevel indentLevel;
          if (type == TokenTypes.LITERAL_NEW || type == TokenTypes.ASSIGN) {
              // note: assumes new or assignment is line to align with
              indentLevel = new IndentLevel(getLineStart(parentAST));
          }
          else {
              // at this point getParent() is instance of BlockParentHandler
              indentLevel = ((BlockParentHandler) getParent()).getChildrenExpectedIndent();
          }
          return indentLevel;
      }
  
      @Override
      protected DetailAST getTopLevelAst() {
          return null;
      }
  
      @Override
      protected DetailAST getLeftCurly() {
          return getMainAst();
      }
  
      @Override
      protected IndentLevel curlyIndent() {
          int offset = 0;
  
          final DetailAST lcurly = getLeftCurly();
  
          if (isOnStartOfLine(lcurly)
              && lcurly.getParent().getType() != TokenTypes.ARRAY_INIT) {
              offset = getBraceAdjustment();
          }
  
          final IndentLevel level = new IndentLevel(getIndent(), offset);
          return IndentLevel.addAcceptable(level, level.getLastIndentLevel()
                  + getLineWrappingIndentation());
      }
  
      @Override
      protected DetailAST getRightCurly() {
          return getMainAst().findFirstToken(TokenTypes.RCURLY);
      }
  
      @Override
      protected boolean canChildrenBeNested() {
          return true;
      }
  
      @Override
      protected DetailAST getListChild() {
          return getMainAst();
      }
  
      @Override
      protected IndentLevel getChildrenExpectedIndent() {
          IndentLevel expectedIndent =
              new IndentLevel(getIndent(), getIndentCheck().getArrayInitIndent(),
                      getIndentCheck().getLineWrappingIndentation());
  
          final int firstLine = getFirstLine(getListChild());
          final int lcurlyPos = expandedTabsColumnNo(getLeftCurly());
          final int firstChildPos =
              getNextFirstNonBlankOnLineAfter(firstLine, lcurlyPos);
  
          if (firstChildPos != NOT_EXIST) {
              expectedIndent = IndentLevel.addAcceptable(expectedIndent, firstChildPos, lcurlyPos
                      + getLineWrappingIndentation());
          }
          return expectedIndent;
      }
  
      /**
       * Returns column number of first non-blank char after
       * specified column on specified line or {@code NOT_EXIST} if
       * such char doesn't exist.
       *
       * @param lineNo   number of line on which we search
       * @param columnNo number of column after which we search
       *
       * @return column number of first non-blank char after
       *         specified column on specified line or {@code NOT_EXIST} if
       *         such char doesn't exist.
       */
      private int getNextFirstNonBlankOnLineAfter(int lineNo, int columnNo) {
          int realColumnNo = columnNo + 1;
          final String line = getIndentCheck().getLines()[lineNo - 1];
          final int lineLength = line.length();
          while (realColumnNo < lineLength
                 && Character.isWhitespace(line.charAt(realColumnNo))) {
              realColumnNo++;
          }
  
          if (realColumnNo == lineLength) {
              realColumnNo = NOT_EXIST;
          }
          return realColumnNo;
      }
  
      /**
       * A shortcut for {@code IndentationCheck} property.
       *
       * @return value of lineWrappingIndentation property
       *         of {@code IndentationCheck}
       */
      private int getLineWrappingIndentation() {
          return getIndentCheck().getLineWrappingIndentation();
      }
  
  }
  