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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Knp\Rad\ResourceResolver;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class RoutingNormalizer  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Normalizes string and array declarations into associative array.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string|array $declaration  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
                            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function normalizeDeclaration($declaration)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (is_string($declaration)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $this->normalizeString($declaration);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Normalize numerically indexed array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (array_keys($declaration) === array_keys(array_values($declaration))) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return $this->normalizeArray($declaration);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (isset($declaration['arguments']) && !is_array($declaration['arguments'])) { | 
            
                            
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                            throw new \InvalidArgumentException('The "arguments" parameter should be an array of arguments.'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Adds default value to associative array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array_merge(['method' => null, 'required' => true, 'arguments' => []], $declaration);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private function normalizeString($declaration)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $service = $declaration;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $method  = null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (strpos($declaration, ':') !== false) { | 
            
                            
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                            list($service, $method) = explode(':', $declaration); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'service'   => $service,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'method'    => $method,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'arguments' => [],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'required'  => true,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    private function normalizeArray($declaration)  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $service = $declaration[0];  | 
            
            
                                                        
            
                                    
            
            
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                        $method  = null;  | 
            
            
                                                        
            
                                    
            
            
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                        if (isset($declaration[1]) && !is_array($declaration[1])) { | 
            
                            
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                            throw new \InvalidArgumentException('The second argument for a resource configuration, when expressed with a numerically indexed array, should be an array of arguments.'); | 
            
                            
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                        }  | 
            
            
                                                        
            
                                    
            
            
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                        if (false !== strpos($declaration[0], ':')) { | 
            
                            
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                            list($service, $method) = explode(':', $declaration[0]); | 
            
            
                                                        
            
                                    
            
            
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                        }  | 
            
            
                                                        
            
                                    
            
            
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                        return [  | 
            
            
                                                        
            
                                    
            
            
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                            'service'   => $service,  | 
            
            
                                                        
            
                                    
            
            
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                            'method'    => $method,  | 
            
            
                                                        
            
                                    
            
            
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                            'arguments' => isset($declaration[1]) ? $declaration[1] : [],  | 
            
            
                                                        
            
                                    
            
            
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                            'required'  => isset($declaration[2]) ? (bool) $declaration[2] : true,  | 
            
            
                                                        
            
                                    
            
            
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                        ];  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks for the generic type
arrayas a return type and suggests a more specific type. This type is inferred from the actual code.