Coverage Report - com.puppycrawl.tools.checkstyle.checks.coding.NestedTryDepthCheck
 
Classes in this File Line Coverage Branch Coverage Complexity
NestedTryDepthCheck
88%
15/17
50%
2/4
1.667
 
 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  
 package com.puppycrawl.tools.checkstyle.checks.coding;
 20  
 
 21  
 import com.puppycrawl.tools.checkstyle.api.DetailAST;
 22  
 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
 23  
 
 24  
 /**
 25  
  * Restricts nested try-catch-finally blocks to a specified depth (default = 1).
 26  
  * @author <a href="mailto:simon@redhillconsulting.com.au">Simon Harris</a>
 27  
  */
 28  
 public final class NestedTryDepthCheck extends AbstractNestedDepthCheck
 29  
 {
 30  
     /** default allowed nesting depth */
 31  
     private static final int DEFAULT_MAX = 1;
 32  
 
 33  
     /** Creates new check instance with default allowed nesting depth. */
 34  
     public NestedTryDepthCheck()
 35  
     {
 36  2
         super(DEFAULT_MAX);
 37  2
     }
 38  
 
 39  
     @Override
 40  
     public int[] getDefaultTokens()
 41  
     {
 42  2
         return new int[] {TokenTypes.LITERAL_TRY};
 43  
     }
 44  
 
 45  
     @Override
 46  
     public void visitToken(DetailAST aAST)
 47  
     {
 48  20
         switch (aAST.getType()) {
 49  
         case TokenTypes.LITERAL_TRY:
 50  20
             visitLiteralTry(aAST);
 51  20
             break;
 52  
         default:
 53  0
             throw new IllegalStateException(aAST.toString());
 54  
         }
 55  20
     }
 56  
 
 57  
     @Override
 58  
     public void leaveToken(DetailAST aAST)
 59  
     {
 60  20
         switch (aAST.getType()) {
 61  
         case TokenTypes.LITERAL_TRY:
 62  20
             leaveLiteralTry();
 63  20
             break;
 64  
         default:
 65  0
             throw new IllegalStateException(aAST.toString());
 66  
         }
 67  20
     }
 68  
 
 69  
     /**
 70  
      * Increases current nesting depth.
 71  
      * @param aTry node for try.
 72  
      */
 73  
     private void visitLiteralTry(DetailAST aTry)
 74  
     {
 75  20
         nestIn(aTry, "nested.try.depth");
 76  20
     }
 77  
 
 78  
     /** Decreases current nesting depth */
 79  
     private void leaveLiteralTry()
 80  
     {
 81  20
         nestOut();
 82  20
     }
 83  
 }