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<?php |
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/** |
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* Instantiator.php |
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* |
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* @date 25.12.2015 13:50:09 |
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*/ |
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namespace Sufir\Hydrator; |
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use InvalidArgumentException; |
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use ReflectionClass; |
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/** |
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* InstantiatorInterface |
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* |
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* Создание объектов (без использования конструктора). |
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* |
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* @author Sklyarov Alexey <[email protected]> |
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* @package Sufir\Hydrator |
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*/ |
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final class Instantiator implements InstantiatorInterface |
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{ |
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/** |
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* @var ReflectionClass[] |
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*/ |
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private static $reflectionsCache = array(); |
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/** |
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* @var object[] Объекты, которые могут быть клонированы |
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*/ |
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private static $prototypesCache = array(); |
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/** |
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* {@inheritdoc} |
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*/ |
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public function newInstance($className) |
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{ |
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if (isset(self::$prototypesCache[$className])) { |
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return clone self::$prototypesCache[$className]; |
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} |
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$reflection = $this->getReflection($className); |
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$object = $reflection->newInstanceWithoutConstructor(); |
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if ($this->isCloneable($reflection)) { |
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self::$prototypesCache[$className] = clone $object; |
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} else { |
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self::$reflectionsCache[$className] = $reflection; |
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} |
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return $object; |
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} |
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/** |
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* |
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* @param string $className |
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* @return ReflectionClass |
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* @throws InvalidArgumentException |
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*/ |
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private function getReflection($className) |
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{ |
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if (isset(self::$reflectionsCache[$className])) { |
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return self::$reflectionsCache[$className]; |
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} |
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if (!class_exists($className)) { |
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throw new InvalidArgumentException("Class «{$className}» not found"); |
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} |
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$reflection = new ReflectionClass($className); |
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if ($reflection->isAbstract()) { |
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throw new InvalidArgumentException("Cannot instantiate abstract class «{$className}»"); |
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} |
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return $reflection; |
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} |
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/** |
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* |
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* @param ReflectionClass $reflection |
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* @return boolean |
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*/ |
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private function isCloneable(ReflectionClass $reflection) |
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{ |
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return ( |
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$reflection->isCloneable() |
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&& !$reflection->hasMethod('__clone') |
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); |
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} |
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} |
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Sufir /
hydrator
