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<?php |
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declare(strict_types=1); |
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namespace GeneratedHydrator\ClosureGenerator\Runtime; |
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use Closure; |
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use GeneratedHydrator\ClosureGenerator\GenerateHydrator; |
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use GeneratedHydrator\Configuration; |
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use ReflectionClass; |
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use ReflectionException; |
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use RuntimeException; |
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use stdClass; |
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use Zend\Hydrator\HydratorInterface; |
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use function array_key_exists; |
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final class GenerateRuntimeHydrator implements GenerateHydrator |
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{ |
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/** @var callable[] */ |
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private static $hydratorsCache; |
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/** @var ReflectionClass[] */ |
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private static $classesCache; |
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/** |
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* @throws ReflectionException |
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*/ |
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public function __invoke(string $className) : callable |
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{ |
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if (isset(self::$hydratorsCache[$className])) { |
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return self::$hydratorsCache[$className]; |
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} |
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if ($className === stdClass::class) { |
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return $this->generateWorkaroundExtractor($className); |
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} |
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$propertyNames = $this->getPropertyNames($className); |
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$parentHydrator = $this->generateParentHydrator($className); |
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// Kind of micro optimization : |
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// in case of class without a parent avoid to inherit $parentHydrator from this scope and to check it in the closure |
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if ($parentHydrator === null) { |
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$extractor = static function ($data, $object) use ($propertyNames) { |
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foreach ($propertyNames as $propertyName) { |
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if (! array_key_exists($propertyName, $data)) { |
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continue; |
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} |
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$object->{$propertyName} = $data[$propertyName]; |
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} |
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return $object; |
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}; |
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} else { |
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$extractor = static function ( |
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$data, |
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$object |
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) use ( |
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$propertyNames, |
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$parentHydrator |
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) { |
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$parentHydrator($data, $object); |
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foreach ($propertyNames as $propertyName) { |
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if (! array_key_exists($propertyName, $data)) { |
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continue; |
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} |
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$object->{$propertyName} = $data[$propertyName]; |
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} |
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return $object; |
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}; |
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} |
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return self::$hydratorsCache[$className] = Closure::bind($extractor, null, $className); |
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} |
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/** |
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* @throws ReflectionException |
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*/ |
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private function generateParentHydrator(string $className) : ?callable |
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{ |
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$parent = $this->getClass($className)->getParentClass(); |
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if ($parent === false) { |
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return null; |
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} |
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return $this($parent->getName()); |
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} |
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/** |
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* @return string[] |
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* |
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* @throws ReflectionException |
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*/ |
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private function getPropertyNames(string $className) : array |
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{ |
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$class = $this->getClass($className); |
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$propertyNames = []; |
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foreach ($class->getProperties() as $property) { |
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if ($property->isStatic()) { |
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continue; |
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} |
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$propertyNames[] = $property->getName(); |
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} |
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return $propertyNames; |
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} |
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/** |
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* @throws ReflectionException |
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* @throws RuntimeException |
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*/ |
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private function getClass(string $className) : ReflectionClass |
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{ |
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if (isset(self::$classesCache[$className])) { |
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return self::$classesCache[$className]; |
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} |
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$class = new ReflectionClass($className); |
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return self::$classesCache[$className] = $class; |
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} |
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private function generateWorkaroundExtractor(string $className) : callable |
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{ |
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$config = new Configuration($className); |
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$generatedClass = $config->createFactory()->getHydratorClass(); |
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/** @var HydratorInterface $hydrator */ |
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$hydrator = new $generatedClass(); |
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return static function (array $data, object $object) use ($hydrator) { |
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return $hydrator->hydrate($data, $object); |
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}; |
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} |
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} |
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Ocramius /
GeneratedHydrator
