/**
* {@inheritdoc}
*/
public function read(int $length = 0, string $byte = null, float $timeout = 0) : \Generator
{
while (null !== $this->delayed) {
(yield $this->delayed);
}
if (!$this->isReadable()) {
throw new UnreadableException('The stream is no longer readable.');
}
$this->length = $length;
if (0 > $this->length) {
throw new InvalidArgumentError('The length should be a positive integer.');
}
$this->byte = strlen($byte) ? $byte[0] : null;
if (!$this->buffer->isEmpty()) {
$data = $this->remove();
if (0 !== $this->hwm && $this->buffer->getLength() <= $this->hwm) {
while (!$this->queue->isEmpty()) {
/** @var \Icicle\Awaitable\Delayed $delayed */
$delayed = $this->queue->shift();
$delayed->resolve();
}
}
if (!$this->writable && $this->buffer->isEmpty()) {
$this->free();
}
return $data;
}
$awaitable = $this->delayed = new Delayed();
if ($timeout) {
$awaitable = $this->delayed->timeout($timeout);
}
try {
$data = (yield $awaitable);
} finally {
$this->delayed = null;
}
return $data;
}