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

 // 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.whitespace;

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

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

 import com.puppycrawl.tools.checkstyle.checks.AbstractOptionCheck;

 /**

  * <p>Abstract class for checking the padding of parentheses. That is whether a

  * space is required after a left parenthesis and before a right parenthesis,

  * or such spaces are forbidden.

  * </p>

  * @author Oliver Burn

  * @version 1.0

  */

 abstract class AbstractParenPadCheck

     extends AbstractOptionCheck<PadOption>

 {

     /**

      * Sets the paren pad otion to nospace.

      */

     AbstractParenPadCheck()

     {

         super(PadOption.NOSPACE, PadOption.class);

     }

     /**

      * Process a token representing a left parentheses.

      * @param aAST the token representing a left parentheses

      */

     protected void processLeft(DetailAST aAST)

     {

         final String line = getLines()[aAST.getLineNo() - 1];

         final int after = aAST.getColumnNo() + 1;

         if (after < line.length()) {

             if ((PadOption.NOSPACE == getAbstractOption())

                 && (Character.isWhitespace(line.charAt(after))))

             {

                 log(aAST.getLineNo(), after, "ws.followed", "(");

             }

             else if ((PadOption.SPACE == getAbstractOption())

                      && !Character.isWhitespace(line.charAt(after))

                      && (line.charAt(after) != ')'))

             {

                 log(aAST.getLineNo(), after, "ws.notFollowed", "(");

             }

         }

     }

     /**

      * Process a token representing a right parentheses.

      * @param aAST the token representing a right parentheses

      */

     protected void processRight(DetailAST aAST)

     {

         final String line = getLines()[aAST.getLineNo() - 1];

         final int before = aAST.getColumnNo() - 1;

         if (before >= 0) {

             if ((PadOption.NOSPACE == getAbstractOption())

                 && Character.isWhitespace(line.charAt(before))

                 && !Utils.whitespaceBefore(before, line))

             {

                 log(aAST.getLineNo(), before, "ws.preceded", ")");

             }

             else if ((PadOption.SPACE == getAbstractOption())

                 && !Character.isWhitespace(line.charAt(before))

                 && (line.charAt(before) != '('))

             {

                 log(aAST.getLineNo(), aAST.getColumnNo(),

                     "ws.notPreceded", ")");

             }

         }

     }

 }