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

 // 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.coding;

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

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

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

 import java.util.Set;

 /**

  * <p>

  * Checks for illegal tokens.

  * </p>

  * <p>

  * Rational: Certain language features are often lead to hard to

  * maintain code or are non-obvious to novice developers. Others

  * may be discouraged in certain frameworks, such as not having

  * native methods in EJB components.

  * </p>

  * <p>

  * An example of how to configure the check is:

  * </p>

  * <pre>

  * <module name="IllegalToken"/>

  * </pre>

  * <p> An example of how to configure the check to forbid

  * a {@link TokenTypes#LITERAL_NATIVE LITERAL_NATIVE} token is:

  * </p>

  * <pre>

  * <module name="IllegalToken">

  *     <property name="tokens" value="LITERAL_NATIVE"/>

  * </module>

  * </pre>

  * @author <a href="mailto:simon@redhillconsulting.com.au">Simon Harris</a>

  * @author Rick Giles

  */

 public class IllegalTokenCheck

     extends Check

 {

     @Override

     public int[] getDefaultTokens()

     {

         return new int[] {

             TokenTypes.LITERAL_SWITCH,

             TokenTypes.POST_INC,

             TokenTypes.POST_DEC,

         };

     }

     @Override

     public int[] getAcceptableTokens()

     {

         // Any tokens set by property 'tokens' are acceptable

         int[] tokensToCopy = getDefaultTokens();

         final Set<String> tokenNames = getTokenNames();

         if (!tokenNames.isEmpty()) {

             tokensToCopy = new int[tokenNames.size()];

             int i = 0;

             for (String name : tokenNames) {

                 tokensToCopy[i] = TokenTypes.getTokenId(name);

                 i++;

             }

         }

         final int[] copy = new int[tokensToCopy.length];

         System.arraycopy(tokensToCopy, 0, copy, 0, tokensToCopy.length);

         return copy;

     }

     @Override

     public void visitToken(DetailAST aAST)

     {

         log(

             aAST.getLineNo(),

             aAST.getColumnNo(),

             "illegal.token",

             aAST.getText());

     }

 }