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

 // 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 a list of statements.

  *

  * @author jrichard

  */

 public class SlistHandler 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 SlistHandler(IndentationCheck aIndentCheck,

         DetailAST aAst, ExpressionHandler aParent)

     {

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

     }

     @Override

     public IndentLevel suggestedChildLevel(ExpressionHandler aChild)

     {

         // this is:

         //  switch (var) {

         //     case 3: {

         //        break;

         //     }

         //  }

         //  ... the case SLIST is followed by a user-created SLIST and

         //  preceded by a switch

         // if our parent is a block handler we want to be transparent

         if (((getParent() instanceof BlockParentHandler)

                 && !(getParent() instanceof SlistHandler))

             || ((getParent() instanceof CaseHandler)

                 && (aChild instanceof SlistHandler)))

         {

             return getParent().suggestedChildLevel(aChild);

         }

         return super.suggestedChildLevel(aChild);

     }

     @Override

     protected DetailAST getNonlistChild()

     {

         // blocks always have either block children or they are transparent

         // and aren't checking children at all.  In the later case, the

         // superclass will want to check single children, so when it

         // does tell it we have none.

         return null;

     }

     @Override

     protected DetailAST getListChild()

     {

         return getMainAst();

     }

     @Override

     protected DetailAST getLCurly()

     {

         return getMainAst();

     }

     @Override

     protected DetailAST getRCurly()

     {

         return getMainAst().findFirstToken(TokenTypes.RCURLY);

     }

     @Override

     protected DetailAST getToplevelAST()

     {

         return null;

     }

     /**

      * Determine if the expression we are handling has a block parent.

      *

      * @return true if it does, false otherwise

      */

     private boolean hasBlockParent()

     {

         final int parentType = getMainAst().getParent().getType();

         return (parentType == TokenTypes.LITERAL_IF)

             || (parentType == TokenTypes.LITERAL_FOR)

             || (parentType == TokenTypes.LITERAL_WHILE)

             || (parentType == TokenTypes.LITERAL_DO)

             || (parentType == TokenTypes.LITERAL_ELSE)

             || (parentType == TokenTypes.LITERAL_TRY)

             || (parentType == TokenTypes.LITERAL_CATCH)

             || (parentType == TokenTypes.LITERAL_FINALLY)

             || (parentType == TokenTypes.CTOR_DEF)

             || (parentType == TokenTypes.METHOD_DEF)

             || (parentType == TokenTypes.STATIC_INIT);

     }

     @Override

     public void checkIndentation()

     {

         // only need to check this if parent is not

         // an if, else, while, do, ctor, method

         if (hasBlockParent()) {

             return;

         }

         super.checkIndentation();

     }

 }