Coverage Report - com.puppycrawl.tools.checkstyle.checks.indentation.IfHandler
 
Classes in this File Line Coverage Branch Coverage Complexity
IfHandler
100%
21/21
100%
10/10
2
 
 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.indentation;
 20  
 
 21  
 import com.puppycrawl.tools.checkstyle.api.DetailAST;
 22  
 import com.puppycrawl.tools.checkstyle.api.TokenTypes;
 23  
 
 24  
 /**
 25  
  * Handler for if statements.
 26  
  *
 27  
  * @author jrichard
 28  
  */
 29  
 public class IfHandler extends BlockParentHandler
 30  
 {
 31  
     /**
 32  
      * Construct an instance of this handler with the given indentation check,
 33  
      * abstract syntax tree, and parent handler.
 34  
      *
 35  
      * @param aIndentCheck   the indentation check
 36  
      * @param aAst           the abstract syntax tree
 37  
      * @param aParent        the parent handler
 38  
      */
 39  
     public IfHandler(IndentationCheck aIndentCheck,
 40  
         DetailAST aAst, ExpressionHandler aParent)
 41  
     {
 42  100
         super(aIndentCheck, "if", aAst, aParent);
 43  100
     }
 44  
 
 45  
     @Override
 46  
     public IndentLevel suggestedChildLevel(ExpressionHandler aChild)
 47  
     {
 48  113
         if (aChild instanceof ElseHandler) {
 49  46
             return getLevel();
 50  
         }
 51  67
         return super.suggestedChildLevel(aChild);
 52  
     }
 53  
 
 54  
     @Override
 55  
     protected IndentLevel getLevelImpl()
 56  
     {
 57  100
         if (isIfAfterElse()) {
 58  12
             return getParent().getLevel();
 59  
         }
 60  88
         return super.getLevelImpl();
 61  
     }
 62  
 
 63  
     /**
 64  
      * Determines if this 'if' statement is part of an 'else' clause
 65  
      * and on the same line.
 66  
      *
 67  
      * @return true if this 'if' is part of an 'else', false otherwise
 68  
      */
 69  
     private boolean isIfAfterElse()
 70  
     {
 71  
         // check if there is an 'else' and an 'if' on the same line
 72  200
         final DetailAST parent = getMainAst().getParent();
 73  200
         return (parent.getType() == TokenTypes.LITERAL_ELSE)
 74  
             && (parent.getLineNo() == getMainAst().getLineNo());
 75  
     }
 76  
 
 77  
     @Override
 78  
     protected void checkToplevelToken()
 79  
     {
 80  100
         if (isIfAfterElse()) {
 81  12
             return;
 82  
         }
 83  
 
 84  88
         super.checkToplevelToken();
 85  88
     }
 86  
 
 87  
     /**
 88  
      * Check the indentation of the conditional expression.
 89  
      */
 90  
     private void checkCondExpr()
 91  
     {
 92  100
         final DetailAST condAst = getMainAst().findFirstToken(TokenTypes.LPAREN)
 93  
             .getNextSibling();
 94  100
         final IndentLevel expected =
 95  
             new IndentLevel(getLevel(), getBasicOffset());
 96  100
         checkExpressionSubtree(condAst, expected, false, false);
 97  100
     }
 98  
 
 99  
     @Override
 100  
     public void checkIndentation()
 101  
     {
 102  100
         super.checkIndentation();
 103  100
         checkCondExpr();
 104  100
     }
 105  
 }