private function validateExtensions(\DOMDocument $dom, $file)
{
foreach ($dom->documentElement->childNodes as $node) {
if (!$node instanceof \DOMElement || 'http://symfony.com/schema/dic/services' === $node->namespaceURI) {
continue;
}
// can it be handled by an extension?
if (!$this->container->hasExtension($node->namespaceURI)) {
$extensionNamespaces = array_filter(array_map(function ($ext) { return $ext->getNamespace(); }, $this->container->getExtensions()));
throw new InvalidArgumentException(sprintf(
'There is no extension able to load the configuration for "%s" (in %s). Looked for namespace "%s", found %s',
$node->tagName,
$file,
$node->namespaceURI,
$extensionNamespaces ? sprintf('"%s"', implode('", "', $extensionNamespaces)) : 'none'
));
}
}
}