EntityResolverManager::setParametersFromReflection

protected EntityResolverManager::setParametersFromReflection($controller, Route $route)

protected function setParametersFromReflection($controller, Route $route) {
  $entity_types = $this->getEntityTypes();
  $parameter_definitions = $route->getOption('parameters') ? : array();

  $result = FALSE;

  if (is_array($controller)) {
    list($instance, $method) = $controller;
    $reflection = new \ReflectionMethod($instance, $method);
  }
  else {
    $reflection = new \ReflectionFunction($controller);
  }

  $parameters = $reflection->getParameters();
  foreach ($parameters as $parameter) {
    $parameter_name = $parameter->getName();
    // If the parameter name matches with an entity type try to set the
    // upcasting information automatically. Therefore take into account that
    // the user has specified some interface, so the upcasting is intended.
    if (isset($entity_types[$parameter_name])) {
      $entity_type = $entity_types[$parameter_name];
      $entity_class = $entity_type->getClass();
      if (($reflection_class = $parameter->getClass()) && (is_subclass_of($entity_class, $reflection_class->name) || $entity_class == $reflection_class->name)) {
        $parameter_definitions += array($parameter_name => array());
        $parameter_definitions[$parameter_name] += array(
          'type' => 'entity:' . $parameter_name,
        );
        $result = TRUE;
      }
    }
  }
  if (!empty($parameter_definitions)) {
    $route->setOption('parameters', $parameter_definitions);
  }
  return $result;
}