function TwigExtension::getNodeVisitors

File

core/lib/Drupal/Core/Template/TwigExtension.php, line 158

Class

TwigExtension

A class providing Drupal Twig extensions.

Namespace

Code

public function getNodeVisitors() {
  // The node visitor is needed to wrap all variables with
  // render_var -> TwigExtension->renderVar() function.
  $visitors = [
    new TwigNodeVisitor(),
    new TwigNodeVisitorCheckDeprecations(),
  ];
  if (\in_array('__toString', TwigSandboxPolicy::getMethodsAllowedOnAllObjects(), TRUE)) {
    // When __toString is an allowed method, there is no point in running
    // \Twig\Extension\SandboxExtension::ensureToStringAllowed, so we add a
    // node visitor to remove any CheckToStringNode nodes added by the
    // sandbox extension.
    $visitors[] = new RemoveCheckToStringNodeVisitor();
  }
  return $visitors;
}