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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\di; |
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use yii\di\exceptions\CircularReferenceException; |
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use yii\di\exceptions\InvalidConfigException; |
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use yii\di\exceptions\NotFoundException; |
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use yii\di\exceptions\NotInstantiableException; |
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/** |
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* Container implements a [dependency injection](http://en.wikipedia.org/wiki/Dependency_injection) container. |
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* |
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* @author Alexander Makarov <[email protected]> |
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* @since 1.0 |
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*/ |
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class Container extends AbstractContainer |
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{ |
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/** |
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* @var object[] |
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*/ |
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private $instances; |
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public function set(string $id, $definition): void |
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{ |
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$this->instances[$id] = null; |
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parent::set($id, $definition); |
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} |
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/** |
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* Returns an instance by either interface name or alias. |
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* |
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* Same instance of the class will be returned each time this method is called. |
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* |
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* @param string $id the interface name or an alias name (e.g. `foo`) that was previously registered via [[set()]]. |
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* @return object an instance of the requested interface. |
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* @throws CircularReferenceException |
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* @throws InvalidConfigException |
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* @throws NotFoundException |
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* @throws NotInstantiableException |
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*/ |
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public function get($id) |
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{ |
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$id = $this->dereference($id); |
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if (isset($this->instances[$id])) { |
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return $this->instances[$id]; |
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} |
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$object = $this->build($id); |
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$this->instances[$id] = $object; |
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return $this->initObject($object); |
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} |
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/** |
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* Returns a value indicating whether the container has already instantiated |
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* instance of the specified name. |
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* @param string $id class name, interface name or alias name |
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* @return bool whether the container has instance of id specified. |
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* @throws CircularReferenceException |
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*/ |
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public function hasInstance($id): bool |
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{ |
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$id = $this->dereference($id); |
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return isset($this->instances[$id]); |
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} |
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/** |
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* Returns all instances set in container |
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* @return array list of instance |
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*/ |
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public function getInstances() : array |
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{ |
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return $this->instances; |
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} |
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} |
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yiisoft /
di
