function AbstractDriver::reference

Overrides Driver::reference

File

vendor/revolt/event-loop/src/EventLoop/Internal/AbstractDriver.php, line 266

Class

AbstractDriver

Event loop driver which implements all basic operations to allow interoperability.

Namespace

Revolt\EventLoop\Internal

Code

public function reference(string $callbackId) : string {
    if (!isset($this->callbacks[$callbackId])) {
        throw InvalidCallbackError::invalidIdentifier($callbackId);
    }
    $this->callbacks[$callbackId]->referenced = true;
    return $callbackId;
}