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

 // 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.sizes;

 import com.puppycrawl.tools.checkstyle.api.Check;

 import com.puppycrawl.tools.checkstyle.api.DetailAST;

 import com.puppycrawl.tools.checkstyle.api.TokenTypes;

 /**

  * <p>

  * Checks for long anonymous inner classes.

  * </p>

  * <p>

  * Rationale: If an anonymous inner class becomes very long

  * it is hard to understand and to see the flow of the method

  * where the class is defined. Therefore long anonymous inner

  * classes should usually be refactored into a named inner class.

  * See also Bloch, Effective Java, p. 93.

  * </p>

  * <p>

  * The default maximum anonymous inner class length is 20 lines.

  * To change the maximum number of lines, set property max.

  * </p>

  * <p>

  * An example of how to configure the check is:

  * </p>

  * <pre>

  * <module name="AnonInnerLength"/>

  * </pre>

  * <p>

  * An example of how to configure the check so that it accepts anonymous

  * inner classes with up to 60 lines is:

  * </p>

  * <pre>

  * <module name="AnonInnerLength">

  *    <property name="max" value="60"/>

  * </module>

  * </pre>

  *

  * @author Rob Worth

  */

 public class AnonInnerLengthCheck extends Check

 {

     /** default maximum number of lines */

     private static final int DEFAULT_MAX = 20;

     /** maximum number of lines */

     private int mMax = DEFAULT_MAX;

     @Override

     public int[] getDefaultTokens()

     {

         return new int[] {TokenTypes.LITERAL_NEW};

     }

     @Override

     public void visitToken(DetailAST aAST)

     {

         final DetailAST openingBrace = aAST.findFirstToken(TokenTypes.OBJBLOCK);

         if (openingBrace != null) {

             final DetailAST closingBrace =

                 openingBrace.findFirstToken(TokenTypes.RCURLY);

             final int length =

                 closingBrace.getLineNo() - openingBrace.getLineNo() + 1;

             if (length > mMax) {

                 log(aAST.getLineNo(), aAST.getColumnNo(), "maxLen.anonInner",

                         length, mMax);

             }

         }

     }

     /**

      * @param aLength the maximum length of an anonymous inner class.

      */

     public void setMax(int aLength)

     {

         mMax = aLength;

     }

 }