/**
* {@inheritdoc}
*/
public function when(callable $onResolved)
{
if (null === $this->promise) {
$provider = $this->provider;
$this->provider = null;
try {
$this->promise = $provider();
if (!$this->promise instanceof Promise) {
$this->promise = new Success($this->promise);
}
} catch (\Throwable $exception) {
$this->promise = new Failure($exception);
}
}
$this->promise->when($onResolved);
}
public function __construct(float $seconds, Promise $promise)
{
$this->promise = $promise;
$promise->when(function (\Throwable $e = null, ...$val) {
if ($this->state === self::PENDING) {
Loop::cancel($this->watcher);
if ($e) {
$this->fail($e);
} else {
$this->resolve(...$val);
}
}
});
if ($this->state === self::PENDING) {
$this->watcher = Loop::delay((int) \floor($seconds * 1000), function () use($seconds) {
$this->watcher = null;
if ($this->state === self::PENDING) {
$e = new TimeoutException(\sprintf('Operation timed out after %.3f seconds', $seconds));
if ($this->promise instanceof Awaitable) {
$this->state = self::FAILED;
try {
$this->promise->cancel($e);
} finally {
$this->state = self::PENDING;
}
}
$this->fail($e);
}
});
}
}
public function __construct(Promise $promise, CancellationTokenSource $source = null)
{
$this->promise = $promise;
$this->source = $source;
$promise->when(function (\Throwable $e = null, ...$val) {
if ($this->state === self::PENDING) {
if ($e) {
$this->fail($e);
} else {
$this->resolve(...$val);
}
}
});
}
public function __construct(Promise $promise, callable $callback, bool $expand = false)
{
$this->promise = $promise;
$promise->when(function (\Throwable $error = null, ...$val) use($callback, $expand) {
if ($this->state === self::PENDING) {
if ($error) {
$this->fail($error);
} else {
if ($expand) {
$this->resolve($callback(...$val[0]));
} else {
$this->resolve($callback(...$val));
}
}
}
});
}