Called before child nodes are visited.
| public enterNode ( Twig_NodeInterface $node, Twig_Environment $env ) | ||
| $node | Twig_NodeInterface | The node to visit |
| $env | Twig_Environment | The Twig environment instance |
private function traverseForVisitor(Twig_NodeVisitorInterface $visitor, Twig_Node $node)
{
$node = $visitor->enterNode($node, $this->env);
foreach ($node as $k => $n) {
if (false !== ($n = $this->traverseForVisitor($visitor, $n))) {
$node->setNode($k, $n);
} else {
$node->removeNode($k);
}
}
return $visitor->leaveNode($node, $this->env);
}
public function traverse(Twig_Node $node, Twig_NodeVisitorInterface $visitor)
{
$node = $visitor->enterNode($node, $this->env);
if ($node instanceof Twig_NodeListInterface) {
$newNodes = array();
foreach ($nodes = $node->getNodes() as $k => $n) {
if (null !== ($n = $this->traverse($n, $visitor))) {
$newNodes[$k] = $n;
}
}
$node->setNodes($newNodes);
}
return $visitor->leaveNode($node, $this->env);
}
protected function traverseForVisitor(Twig_NodeVisitorInterface $visitor, Twig_NodeInterface $node = null)
{
if (null === $node) {
return null;
}
$node = $visitor->enterNode($node, $this->env);
foreach ($node as $k => $n) {
if (false !== $n = $this->traverseForVisitor($visitor, $n)) {
$node->setNode($k, $n);
} else {
$node->removeNode($k);
}
}
return $visitor->leaveNode($node, $this->env);
}
