/**
* @return \Icicle\Promise\PromiseInterface
*/
protected function getPromise() : PromiseInterface
{
if (null === $this->promise) {
$promisor = $this->promisor;
$this->promisor = null;
try {
$this->promise = Promise\resolve($promisor());
} catch (\Throwable $exception) {
$this->promise = Promise\reject($exception);
}
}
return $this->promise;
}
/**
* @coroutine
*
* @param float $time Time to sleep in seconds.
*
* @return \Generator
*
* @resolve float Actual time slept in seconds.
*/
function sleep(float $time) : \Generator
{
$start = (yield Promise\resolve(microtime(true))->delay($time));
return microtime(true) - $start;
}
/**
* @inheritdoc
*
* @param string $query
* @param array $values
*
* @return PromiseInterface
*
* @throws InvalidArgumentException
*/
public function query($query, $values)
{
return Promise\resolve($this->connection->fetchAll($query, $values));
}