class TypedDataPropertyDeriverBase

abstract class TypedDataPropertyDeriverBase extends DeriverBase implements ContainerDeriverInterface {
    use StringTranslationTrait;
    
    /**
     * @var \Drupal\Core\TypedData\TypedDataManagerInterface
     */
    protected $typedDataManager;
    
    /**
     * The label string for use with derivative labels.
     *
     * @var string
     */
    protected $label = '@property from @base';
    
    /**
     * TypedDataPropertyDeriverBase constructor.
     *
     * @param \Drupal\Core\TypedData\TypedDataManagerInterface $typed_data_manager
     *   The typed data manager.
     * @param \Drupal\Core\StringTranslation\TranslationInterface $string_translation
     *   The string translation service.
     */
    public function __construct(TypedDataManagerInterface $typed_data_manager, TranslationInterface $string_translation) {
        $this->typedDataManager = $typed_data_manager;
        $this->stringTranslation = $string_translation;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container, $base_plugin_id) {
        return new static($container->get('typed_data_manager'), $container->get('string_translation'));
    }
    
    /**
     * {@inheritdoc}
     */
    public function getDerivativeDefinitions($base_plugin_definition) {
        foreach ($this->typedDataManager
            ->getDefinitions() as $data_type_id => $data_type_definition) {
            if (is_subclass_of($data_type_definition['class'], ComplexDataInterface::class, TRUE)) {
                
                /** @var \Drupal\Core\TypedData\ComplexDataDefinitionInterface $base_definition */
                $base_definition = $this->typedDataManager
                    ->createDataDefinition($data_type_id);
                foreach ($base_definition->getPropertyDefinitions() as $property_name => $property_definition) {
                    if ($property_definition instanceof BaseFieldDefinition || $property_definition instanceof FieldConfig) {
                        $this->generateDerivativeDefinition($base_plugin_definition, $data_type_id, $data_type_definition, $base_definition, $property_name, $property_definition);
                    }
                }
            }
        }
        return $this->derivatives;
    }
    
    /**
     * @param $property_definition
     *
     * @return mixed
     */
    protected function getDataType($property_definition) {
        if ($property_definition instanceof DataReferenceDefinitionInterface) {
            return $property_definition->getTargetDefinition()
                ->getDataType();
        }
        if ($property_definition instanceof ListDataDefinitionInterface) {
            return $property_definition->getItemDefinition()
                ->getDataType();
        }
        return $property_definition->getDataType();
    }
    
    /**
     * Generates and maintains a derivative definition.
     *
     * This method should directly manipulate $this->derivatives and not return
     * values. This allows implementations control over the derivative names.
     *
     * @param $base_plugin_definition
     *   The base plugin definition.
     * @param string $data_type_id
     *   The plugin id of the data type.
     * @param mixed $data_type_definition
     *   The plugin definition of the data type.
     * @param \Drupal\Core\TypedData\DataDefinitionInterface $base_definition
     *   The data type definition of a complex data object.
     * @param string $property_name
     *   The name of the property.
     * @param \Drupal\Core\TypedData\DataDefinitionInterface $property_definition
     *   The property definition.
     */
    protected abstract function generateDerivativeDefinition($base_plugin_definition, $data_type_id, $data_type_definition, DataDefinitionInterface $base_definition, $property_name, DataDefinitionInterface $property_definition);

}