Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/DependencyInjection/ClassResolver.php \Drupal\Core\DependencyInjection\ClassResolver::getInstanceFromDefinition()
2. 8.9.x core/lib/Drupal/Core/DependencyInjection/ClassResolver.php \Drupal\Core\DependencyInjection\ClassResolver::getInstanceFromDefinition()
3. 11.x core/lib/Drupal/Core/DependencyInjection/ClassResolver.php \Drupal\Core\DependencyInjection\ClassResolver::getInstanceFromDefinition()

Returns a class instance with a given class definition.

In contrast to controllers you don't specify a method.

Parameters

string $definition: A class name or service name.

Return value

object The instance of the class.

Overrides ClassResolverInterface::getInstanceFromDefinition

File

core/lib/Drupal/Core/DependencyInjection/ClassResolver.php, line 31

Class

ClassResolver

Implements the class resolver interface supporting class names and services.

Namespace

Drupal\Core\DependencyInjection

Code

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) {
    @trigger_error('Implementing \\Symfony\\Component\\DependencyInjection\\ContainerAwareInterface is deprecated in drupal:10.3.0 and it will be removed in drupal:11.0.0. Implement \\Drupal\\Core\\DependencyInjection\\ContainerInjectionInterface and use dependency injection instead. See https://www.drupal.org/node/3428661', E_USER_DEPRECATED);
    $instance->setContainer($this->container);
  }
  return $instance;
}

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