/**
* Resolves the awaitable with the given awaitable or value. If another awaitable, this awaitable takes on the state
* of that awaitable. If a value, the awaitable will be fulfilled with that value.
*
* @param mixed $value An awaitable can be resolved with anything other than itself.
*/
protected function resolve($value = null)
{
if (null !== $this->result) {
return;
}
if ($value instanceof self) {
$value = $value->unwrap();
if ($this === $value) {
$value = new Internal\RejectedAwaitable(new CircularResolutionError('Circular reference in awaitable resolution chain.'));
}
} elseif (!$value instanceof Awaitable) {
$value = new Internal\FulfilledAwaitable($value);
}
$this->result = $value;
$this->result->done($this->onFulfilled, $this->onRejected ?: new DoneQueue());
$this->onFulfilled = null;
$this->onRejected = null;
$this->onCancelled = null;
}
/**
* @param \Icicle\Awaitable\Awaitable $awaitable
*/
public function __construct(Awaitable $awaitable)
{
parent::__construct(function () use($awaitable) {
return new Promise(function ($resolve, $reject) use($awaitable) {
$awaitable->done($resolve, $reject);
}, function () use($awaitable) {
$awaitable->cancel();
});
});
}
/**
* {@inheritdoc}
*/
public function done(callable $onFulfilled = null, callable $onRejected = null)
{
$this->result->done(null, $onRejected);
}
/**
* {@inheritdoc}
*/
public function done(callable $onFulfilled = null, callable $onRejected = null)
{
$this->awaitable->done($onFulfilled, $onRejected);
}
