class ClassResolver in Drupal 9

Implements the class resolver interface supporting class names and services.

Hierarchy

• class \Drupal\Core\DependencyInjection\ClassResolver implements \Symfony\Component\DependencyInjection\ContainerAwareInterface, ClassResolverInterface uses \Symfony\Component\DependencyInjection\ContainerAwareTrait, DependencySerializationTrait

2 files declare their use of ClassResolver

ControllerResolverTest.php in core/tests/Drupal/Tests/Core/Controller/ControllerResolverTest.php

Contains \Drupal\Tests\Core\Controller\ControllerResolverTest.

ThemeNegotiatorTest.php in core/tests/Drupal/Tests/Core/Theme/ThemeNegotiatorTest.php

1 string reference to 'ClassResolver'

core.services.yml in core/core.services.yml

core/core.services.yml

1 service uses ClassResolver

class_resolver in core/core.services.yml

Drupal\Core\DependencyInjection\ClassResolver

File

core/lib/Drupal/Core/DependencyInjection/ClassResolver.php, line 11

Namespace

Drupal\Core\DependencyInjection

class ClassResolver implements ClassResolverInterface, ContainerAwareInterface {
  use DependencySerializationTrait;
  use ContainerAwareTrait;

  /**
   * {@inheritdoc}
   */
  public function getInstanceFromDefinition($definition) {
    if ($this->container
      ->has($definition)) {
      $instance = $this->container
        ->get($definition);
    }
    else {
      if (!class_exists($definition)) {
        throw new \InvalidArgumentException(sprintf('Class "%s" does not exist.', $definition));
      }
      if (is_subclass_of($definition, 'Drupal\\Core\\DependencyInjection\\ContainerInjectionInterface')) {
        $instance = $definition::create($this->container);
      }
      else {
        $instance = new $definition();
      }
    }
    if ($instance instanceof ContainerAwareInterface) {
      $instance
        ->setContainer($this->container);
    }
    return $instance;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ClassResolver::getInstanceFromDefinition	public	function	Returns a class instance with a given class definition. Overrides ClassResolverInterface::getInstanceFromDefinition
DependencySerializationTrait::$_entityStorages	protected	property
DependencySerializationTrait::$_serviceIds	protected	property
DependencySerializationTrait::__sleep	public	function		2
DependencySerializationTrait::__wakeup	public	function		2