public function __invoke(array $args = null, $str = null)
{
$str = parent::__invoke($args);
// Flatten all fragment calls within the template string.
while (preg_match(Regex::$patt->fragmentInvoke, $str, $m, PREG_OFFSET_CAPTURE)) {
$name = strtolower($m['name'][0]);
$fragment = isset(Crush::$process->fragments[$name]) ? Crush::$process->fragments[$name] : null;
$replacement = '';
$start = $m[0][1];
$length = strlen($m[0][0]);
// Skip over same named fragments to avoid infinite recursion.
if ($fragment && $name !== $this->name) {
$args = array();
if (isset($m['parens'][1])) {
$args = Functions::parseArgs($m['parens_content'][0]);
}
$replacement = $fragment($args);
}
$str = substr_replace($str, $replacement, $start, $length);
}
return $str;
}
