////////////////////////////////////////////////////////////////////////////////

 // checkstyle: Checks Java source code for adherence to a set of rules.

 // Copyright (C) 2001-2014  Oliver Burn

 //

 // 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 else blocks.

  *

  * @author jrichard

  */

 public class ElseHandler extends BlockParentHandler

 {

     /**

      * Construct an instance of this handler with the given indentation check,

      * abstract syntax tree, and parent handler.

      *

      * @param aIndentCheck   the indentation check

      * @param aAst           the abstract syntax tree

      * @param aParent        the parent handler

      */

     public ElseHandler(IndentationCheck aIndentCheck,

         DetailAST aAst, ExpressionHandler aParent)

     {

         super(aIndentCheck, "else", aAst, aParent);

     }

     @Override

     protected void checkToplevelToken()

     {

         // check if else is nested with rcurly of if:

         //

         //  } else ...

         final DetailAST ifAST = getMainAst().getParent();

         if (ifAST != null) {

             final DetailAST slist = ifAST.findFirstToken(TokenTypes.SLIST);

             if (slist != null) {

                 final DetailAST lcurly = slist.getLastChild();

                 if ((lcurly != null)

                     && (lcurly.getLineNo() == getMainAst().getLineNo()))

                 {

                     // indentation checked as part of LITERAL IF check

                     return;

                 }

             }

         }

         super.checkToplevelToken();

     }

     @Override

     protected DetailAST getNonlistChild()

     {

         return getMainAst().getFirstChild();

     }

 }