////////////////////////////////////////////////////////////////////////////////
   // checkstyle: Checks Java source code for adherence to a set of rules.
   // Copyright (C) 2001-2019 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 {
  
      /**
       * 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() {
          final IndentLevel level = new IndentLevel(getIndent(), getBraceAdjustment());
          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(Integer.MAX_VALUE, getListChild());
          final int lcurlyPos = expandedTabsColumnNo(getLeftCurly());
         final int firstChildPos =
             getNextFirstNonBlankOnLineAfter(firstLine, lcurlyPos);
         if (firstChildPos >= 0) {
             expectedIndent = IndentLevel.addAcceptable(expectedIndent, firstChildPos, lcurlyPos
                     + getLineWrappingIndentation());
         }
         return expectedIndent;
     }
 
     /**
      * Returns column number of first non-blank char after
      * specified column on specified line or -1 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 -1 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 = -1;
         }
         return realColumnNo;
     }
 
     /**
      * A shortcut for {@code IndentationCheck} property.
      * @return value of lineWrappingIndentation property
      *         of {@code IndentationCheck}
      */
     private int getLineWrappingIndentation() {
         return getIndentCheck().getLineWrappingIndentation();
     }
 
 }