Coverage Report - com.puppycrawl.tools.checkstyle.checks.whitespace.EmptyForInitializerPadCheck
 
Classes in this File Line Coverage Branch Coverage Complexity
EmptyForInitializerPadCheck
100%
15/15
91%
11/12
3
 
 1  
 ////////////////////////////////////////////////////////////////////////////////
 2  
 // checkstyle: Checks Java source code for adherence to a set of rules.
 3  
 // Copyright (C) 2001-2014  Oliver Burn
 4  
 //
 5  
 // This library is free software; you can redistribute it and/or
 6  
 // modify it under the terms of the GNU Lesser General Public
 7  
 // License as published by the Free Software Foundation; either
 8  
 // version 2.1 of the License, or (at your option) any later version.
 9  
 //
 10  
 // This library is distributed in the hope that it will be useful,
 11  
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
 12  
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 13  
 // Lesser General Public License for more details.
 14  
 //
 15  
 // You should have received a copy of the GNU Lesser General Public
 16  
 // License along with this library; if not, write to the Free Software
 17  
 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 18  
 ////////////////////////////////////////////////////////////////////////////////
 19  
 
 20  
 package com.puppycrawl.tools.checkstyle.checks.whitespace;
 21  
 
 22  
 import com.puppycrawl.tools.checkstyle.api.DetailAST;
 23  
 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
 24  
 import com.puppycrawl.tools.checkstyle.api.Utils;
 25  
 import com.puppycrawl.tools.checkstyle.checks.AbstractOptionCheck;
 26  
 
 27  
 /**
 28  
  * <p>Checks the padding of an empty for initializer; that is whether a
 29  
  * space is required at an empty for initializer, or such spaces are
 30  
  * forbidden. No check occurs if there is a line wrap at the initializer, as in
 31  
  * </p>
 32  
  * <pre class="body">
 33  
 for (
 34  
       ; i &lt; j; i++, j--)
 35  
    </pre>
 36  
  * <p>
 37  
  * The policy to verify is specified using the {@link PadOption} class and
 38  
  * defaults to {@link PadOption#NOSPACE}.
 39  
  * </p>
 40  
  * <p>
 41  
  * An example of how to configure the check is:
 42  
  * </p>
 43  
  * <pre>
 44  
  * &lt;module name="EmptyForInitializerPad"/&gt;
 45  
  * </pre>
 46  
  *
 47  
  * @author lkuehne
 48  
  * @version 1.0
 49  
  */
 50  
 public class EmptyForInitializerPadCheck
 51  
     extends AbstractOptionCheck<PadOption>
 52  
 {
 53  
     /**
 54  
      * Sets the paren pad otion to nospace.
 55  
      */
 56  
     public EmptyForInitializerPadCheck()
 57  
     {
 58  2
         super(PadOption.NOSPACE, PadOption.class);
 59  2
     }
 60  
 
 61  
     @Override
 62  
     public int[] getDefaultTokens()
 63  
     {
 64  2
         return new int[] {TokenTypes.FOR_INIT,
 65  
         };
 66  
     }
 67  
 
 68  
     @Override
 69  
     public void visitToken(DetailAST aAST)
 70  
     {
 71  22
         if (aAST.getChildCount() == 0) {
 72  
             //empty for initializer. test pad before semi.
 73  4
             final DetailAST semi = aAST.getNextSibling();
 74  4
             final int semiLineIdx = semi.getLineNo() - 1;
 75  4
             final String line = getLines()[semiLineIdx];
 76  4
             final int before = semi.getColumnNo() - 1;
 77  
             //don't check if semi at beginning of line
 78  4
             if (!Utils.whitespaceBefore(before, line)) {
 79  4
                 final PadOption option = getAbstractOption();
 80  4
                 if ((PadOption.NOSPACE == option)
 81  
                     && (Character.isWhitespace(line.charAt(before))))
 82  
                 {
 83  1
                     log(semi.getLineNo(), before, "ws.preceded", ";");
 84  
                 }
 85  3
                 else if ((PadOption.SPACE == option)
 86  
                          && !Character.isWhitespace(line.charAt(before)))
 87  
                 {
 88  1
                     log(semi.getLineNo(), before, "ws.notPreceded", ";");
 89  
                 }
 90  
             }
 91  
         }
 92  22
     }
 93  
 }