Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\DependencyInjection;
Chris@0: 
Chris@0: use Symfony\Component\DependencyInjection\ContainerAwareTrait;
Chris@0: use Symfony\Component\DependencyInjection\ContainerAwareInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Implements the class resolver interface supporting class names and services.
Chris@0:  */
Chris@0: class ClassResolver implements ClassResolverInterface, ContainerAwareInterface {
Chris@0:   use DependencySerializationTrait;
Chris@0:   use ContainerAwareTrait;
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getInstanceFromDefinition($definition) {
Chris@0:     if ($this->container->has($definition)) {
Chris@0:       $instance = $this->container->get($definition);
Chris@0:     }
Chris@0:     else {
Chris@0:       if (!class_exists($definition)) {
Chris@0:         throw new \InvalidArgumentException(sprintf('Class "%s" does not exist.', $definition));
Chris@0:       }
Chris@0: 
Chris@0:       if (is_subclass_of($definition, 'Drupal\Core\DependencyInjection\ContainerInjectionInterface')) {
Chris@0:         $instance = $definition::create($this->container);
Chris@0:       }
Chris@0:       else {
Chris@0:         $instance = new $definition();
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     if ($instance instanceof ContainerAwareInterface) {
Chris@0:       $instance->setContainer($this->container);
Chris@0:     }
Chris@0: 
Chris@0:     return $instance;
Chris@0:   }
Chris@0: 
Chris@0: }