| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | namespace PeacefulBit\Packet\Visitors; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | use PeacefulBit\Packet\Nodes; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | trait NodeDispatchingTrait | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |      * @param Nodes\Node $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |     public function visit(Nodes\Node $node) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |         $type = get_class($node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |         switch ($type) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |             case Nodes\ConstantNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |                 return $this->visitConstantNode($node); | 
                            
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                | 19 |  |  |             case Nodes\FunctionNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |                 return $this->visitFunctionNode($node); | 
                            
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                | 21 |  |  |             case Nodes\InvokeNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |                 return $this->visitInvokeNode($node); | 
                            
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                | 23 |  |  |             case Nodes\SequenceNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |                 return $this->visitSequenceNode($node); | 
                            
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                | 25 |  |  |             case Nodes\StringNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |                 return $this->visitStringNode($node); | 
                            
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                | 27 |  |  |             case Nodes\SymbolNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |                 return $this->visitSymbolNode($node); | 
                            
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                | 29 |  |  |             case Nodes\NativeNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |                 return $this->visitNativeNode($node); | 
                            
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                | 31 |  |  |             case Nodes\LambdaNode::class: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |                 return $this->visitLambdaNode($node); | 
                            
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                | 33 |  |  |             default: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |                 throw new \InvalidArgumentException("Unsupported type of node - $type"); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |      * @param Nodes\Node $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |      * @return callable | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |     public function getVisitor(Nodes\Node $node) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |         $type = explode('\\', get_class($node)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |         $class = end($type); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |         $method = 'visit' . $class; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |         if (method_exists($this, $method)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |             return [$this, $method]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |         throw new \InvalidArgumentException("Unsupported type of node - $class"); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |      * @param Nodes\ConstantNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |     abstract public function visitConstantNode(Nodes\ConstantNode $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |      * @param Nodes\FunctionNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |     abstract public function visitFunctionNode(Nodes\FunctionNode $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |      * @param Nodes\InvokeNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |     abstract public function visitInvokeNode(Nodes\InvokeNode $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |      * @param Nodes\SequenceNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |     abstract public function visitSequenceNode(Nodes\SequenceNode $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |      * @param Nodes\StringNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |      * @return mixed | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 82 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 83 |  |  |     abstract public function visitStringNode(Nodes\StringNode $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |      * @param Nodes\SymbolNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |     abstract public function visitSymbolNode(Nodes\SymbolNode $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |      * @param Nodes\NativeNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |     abstract public function visitNativeNode(Nodes\NativeNode $node); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |      * @param Nodes\LambdaNode $node | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |     abstract public function visitLambdaNode(Nodes\LambdaNode $node); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 102 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 103 |  |  |  | 
            
                        
This check looks for parameters that are defined as one type in their type hint or doc comment but seem to be used as a narrower type, i.e an implementation of an interface or a subclass.
Consider changing the type of the parameter or doing an instanceof check before assuming your parameter is of the expected type.