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;
}