public function until(callable $invokable, $context = null)
{
if (!$context) {
$context = new Context();
}
try {
$context->inc();
$ret = call_user_func($invokable, $context);
} catch (\Exception $e) {
} finally {
if (!$context->isValid() && $context->getTimes() < $this->times) {
$ret = $this->until($invokable, $context);
}
if ($context->getTimes() >= $this->times && isset($e)) {
throw $e;
}
}
return $ret;
}