/**
* Get view loader.
*
* @param string $engine Forced extension value.
* @return LoaderInterface
*/
public function loader($engine = null)
{
$extension = null;
if (!empty($engine)) {
if (!$this->config->hasEngine($engine)) {
throw new ViewsException("Undefined view engine '{$engine}'.");
}
$extension = $this->config->engineExtension($engine);
}
if (empty($extension)) {
return $this->loader;
}
//todo: think about it
return $this->loader->withExtension($extension);
}
