public function Twig_NodeVisitor_Sandbox::enterNode

Called before child nodes are visited.

Parameters

Twig_NodeInterface $node The node to visit:

Twig_Environment $env The Twig environment instance:

Return value

Twig_NodeInterface The modified node

Overrides Twig_NodeVisitorInterface::enterNode

File

drupal/core/vendor/twig/twig/lib/Twig/NodeVisitor/Sandbox.php, line 32

Class

Twig_NodeVisitor_Sandbox

Twig_NodeVisitor_Sandbox implements sandboxing.

Code

public function enterNode(Twig_NodeInterface $node, Twig_Environment $env) {
  if ($node instanceof Twig_Node_Module) {
    $this->inAModule = true;
    $this->tags = array();
    $this->filters = array();
    $this->functions = array();
    return $node;
  }
  elseif ($this->inAModule) {

    // look for tags
    if ($node
      ->getNodeTag()) {
      $this->tags[] = $node
        ->getNodeTag();
    }

    // look for filters
    if ($node instanceof Twig_Node_Expression_Filter) {
      $this->filters[] = $node
        ->getNode('filter')
        ->getAttribute('value');
    }

    // look for functions
    if ($node instanceof Twig_Node_Expression_Function) {
      $this->functions[] = $node
        ->getAttribute('name');
    }

    // wrap print to check __toString() calls
    if ($node instanceof Twig_Node_Print) {
      return new Twig_Node_SandboxedPrint($node
        ->getNode('expr'), $node
        ->getLine(), $node
        ->getNodeTag());
    }
  }
  return $node;
}