| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | declare(strict_types=1); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | namespace RemotelyLiving\Doorkeeper\Rules; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | use RemotelyLiving\Doorkeeper\Identification; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | use RemotelyLiving\Doorkeeper\Requestor; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | abstract class AbstractRule implements RuleInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |      * @var \RemotelyLiving\Doorkeeper\Rules\RuleInterface[] | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |     private $prerequisites = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |     final public function addPrerequisite(RuleInterface $rule): void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |         $this->prerequisites[] = $rule; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |     final public function hasPrerequisites(): bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |         return (bool) $this->prerequisites; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |     final public function getPrerequisites(): iterable | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |         return $this->prerequisites; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |     public function getValue() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |         return null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |     final public function canBeSatisfied(Requestor $requestor = null): bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |         if ($this->hasPrerequisites()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |             foreach ($this->prerequisites as $prerequisite) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |                 if (!$prerequisite->canBeSatisfied($requestor)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |                     return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |                 } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |         return $this->childCanBeSatisfied($requestor); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |     } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 49 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 50 |  |  |     public function jsonSerialize(): array | 
            
                                                                        
                            
            
                                    
            
            
                | 51 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 52 |  |  |         return [ | 
            
                                                                        
                            
            
                                    
            
            
                | 53 |  |  |             'type' => static::class, | 
            
                                                                        
                            
            
                                    
            
            
                | 54 |  |  |             'value' => $this->getValue(), | 
                            
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                | 55 |  |  |             'prerequisites' => $this->prerequisites, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |         ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |     protected function requestorHasMatchingId( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |         Requestor $requestor = null, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |         Identification\IdentificationInterface $identification | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |     ): bool { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |         if (!$requestor) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |             return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |         return $requestor->hasIdentification($identification); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |     abstract protected function childCanBeSatisfied(Requestor $requestor = null): bool; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 71 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 72 |  |  |  | 
            
                        
This check looks for function or method calls that always return null and whose return value is used.
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.