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by Ulises Jeremias
02:15
created

PreOrder::visit()   A

↳ Parent: PreOrder

Complexity

Conditions 2
Paths 2

Size

Total Lines 12
Code Lines 6

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 2
eloc 6
nc 2
nop 1
dl 0
loc 12
rs 9.4285
c 0
b 0
f 0
1 
<?php namespace Mbh\Tree\Visitor;
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use Mbh\Tree\Interfaces\Node as NodeInterface;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use Mbh\Tree\Visitor;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class PreOrder extends Visitor

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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{

            


            
                                                                        
                            
            
                                    
            
            

                
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    public function visit(NodeInterface $node)

            


            
                                                                        
                            
            
                                    
            
            

                
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    {

            


            
                                                                        
                            
            
                                    
            
            

                
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        $nodes = [$node];

            


            
                                                                        
                            
            
                                    
            
            

                
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        foreach ($node->getChildren() as $child) {

            


            
                                                                        
                            
            
                                    
            
            

                
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            $nodes = array_merge(

            


            
                                                                        
                            
            
                                    
            
            

                
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                $nodes,

            


            
                                                                        
                            
            
                                    
            
            

                
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                $child->accept($this)

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                                                                        
                        

                            
                            
0 ignored issues

                            –
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            Bug
    
    
    
        introduced 
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Are you sure the usage of $child->accept($this) targeting Mbh\Tree\Interfaces\Node::accept() seems to always return null.
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
This check looks for function or method calls that always return null and whose
return value is used.


class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
if ($a->getObject()) {





The method getObject() can return nothing but null, so it makes no sense
to use the return value.


The reason is most likely that a function or method is imcomplete or has been
reduced for debug purposes.


                        

                                                    

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            Bug
    
    
    
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$child->accept($this) of type void is incompatible with the type null|array expected by parameter $array2 of array_merge().
                                                                                                                                                                                           (
                                     Ignorable by Annotation
                                )
                                

                                    
 If this is a false-positive, you can also ignore this issue in your code via the ignore-type   annotation

                                    

                                        

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                /** @scrutinizer ignore-type */ $child->accept($this)

                                        

                                                                            

                                

                                                                                                                                                                                                                                    

                    
                                                    

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            );

            


            
                                                                        
                            
            
                                    
            
            

                
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        }

            


            
                                                                        
                            
            
                                    
            
            

                
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        return $nodes;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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    }

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
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