public function enterNode(Twig_NodeInterface $node, Twig_Environment $env)
{
if ($node instanceof \Twig_Node_Module) {
$parent = $node->getNode('parent');
if ($parent instanceof \Twig_Node_Expression_Constant) {
$templateName = $parent->getAttribute('value');
$collector = new PlaceHolderNodeCollector();
$traverser = new \Twig_NodeTraverser($env, array($collector));
$stream = $env->tokenize($env->getLoader()->getSource($templateName));
$traverser->traverse($env->getParser()->parse($stream));
$this->names = array_merge($this->names, $collector->getCollectedNames());
}
} elseif ($node instanceof PlaceHolderNode) {
$arguments = $node->getNode('arguments');
if ($arguments->count() !== 1) {
throw new \UnexpectedValueException('Expecting only name definition inside place holder function.');
}
$nameNode = $arguments->getIterator()->current();
if (!$nameNode instanceof \Twig_Node_Expression_Constant) {
throw new \UnexpectedValueException('Name definition should be constant expression only.');
}
$this->names[] = $nameNode->getAttribute('value');
}
return $node;
}
/**
* {@inheritDoc}
*/
public function getPlaces($layoutSrc)
{
$tokenStream = $this->twig->tokenize($this->twig->getLoader()->getSource($layoutSrc));
$collector = new PlaceHolderNodeCollector();
$traverser = new \Twig_NodeTraverser($this->twig, array($collector));
$traverser->traverse($this->twig->parse($tokenStream));
return $collector->getCollectedNames();
}
