Coverage Report - com.puppycrawl.tools.checkstyle.checks.indentation.LambdaHandler
 
Classes in this File Line Coverage Branch Coverage Complexity
LambdaHandler
100%
24/24
100%
14/14
3
 
 1  
 ////////////////////////////////////////////////////////////////////////////////
 2  
 // checkstyle: Checks Java source code for adherence to a set of rules.
 3  
 // Copyright (C) 2001-2017 the original author or authors.
 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.indentation;
 21  
 
 22  
 import com.puppycrawl.tools.checkstyle.api.DetailAST;
 23  
 
 24  
 /**
 25  
  * Handler for lambda expressions.
 26  
  *
 27  
  * @author pietern
 28  
  */
 29  
 public class LambdaHandler extends AbstractExpressionHandler {
 30  
     /**
 31  
      * Construct an instance of this handler with the given indentation check,
 32  
      * abstract syntax tree, and parent handler.
 33  
      *
 34  
      * @param indentCheck the indentation check
 35  
      * @param ast the abstract syntax tree
 36  
      * @param parent the parent handler
 37  
      */
 38  
     public LambdaHandler(IndentationCheck indentCheck,
 39  
                          DetailAST ast, AbstractExpressionHandler parent) {
 40  57
         super(indentCheck, "lambda", ast, parent);
 41  57
     }
 42  
 
 43  
     @Override
 44  
     public IndentLevel getSuggestedChildIndent(AbstractExpressionHandler child) {
 45  23
         return getIndent();
 46  
     }
 47  
 
 48  
     /**
 49  
      * {@inheritDoc}.
 50  
      * @noinspection MethodWithMultipleReturnPoints
 51  
      */
 52  
     @Override
 53  
     protected IndentLevel getIndentImpl() {
 54  38
         if (getParent() instanceof MethodCallHandler) {
 55  13
             return getParent().getSuggestedChildIndent(this);
 56  
         }
 57  
 
 58  25
         DetailAST parent = getMainAst().getParent();
 59  25
         if (getParent() instanceof NewHandler) {
 60  7
             parent = parent.getParent();
 61  
         }
 62  
 
 63  
         // Use the start of the parent's line as the reference indentation level.
 64  25
         IndentLevel level = new IndentLevel(getLineStart(parent));
 65  
 
 66  
         // If the start of the lambda is the first element on the line;
 67  
         // assume line wrapping with respect to its parent.
 68  25
         final DetailAST firstChild = getMainAst().getFirstChild();
 69  25
         if (getLineStart(firstChild) == firstChild.getColumnNo()) {
 70  17
             level = new IndentLevel(level, getIndentCheck().getLineWrappingIndentation());
 71  
         }
 72  
 
 73  25
         return level;
 74  
     }
 75  
 
 76  
     @Override
 77  
     public void checkIndentation() {
 78  
         // If the argument list is the first element on the line
 79  57
         final DetailAST firstChild = getMainAst().getFirstChild();
 80  57
         if (getLineStart(firstChild) == firstChild.getColumnNo()) {
 81  22
             final IndentLevel level = getIndent();
 82  22
             if (!level.isAcceptable(firstChild.getColumnNo())) {
 83  1
                 logError(firstChild, "arguments", firstChild.getColumnNo(), level);
 84  
             }
 85  
         }
 86  
 
 87  
         // If the "->" is the first element on the line, assume line wrapping.
 88  57
         if (getLineStart(getMainAst()) == getMainAst().getColumnNo()) {
 89  3
             final IndentLevel level =
 90  3
                 new IndentLevel(getIndent(), getIndentCheck().getLineWrappingIndentation());
 91  3
             if (!level.isAcceptable(getMainAst().getColumnNo())) {
 92  1
                 logError(getMainAst(), "", getMainAst().getColumnNo(), level);
 93  
             }
 94  
         }
 95  57
     }
 96  
 }