public UniTask <T> WaitUntilValueChangedAsync(CancellationToken cancellationToken)
{
if (isDisposed)
{
throw new ObjectDisposedException("ReadOnlyReactiveProperty");
}
if (!cancellationToken.CanBeCanceled)
{
if (commonPromise != null)
{
return(commonPromise.Task);
}
commonPromise = new ReactivePropertyReusablePromise <T>(CancellationToken.None);
return(commonPromise.Task);
}
if (removablePromises == null)
{
removablePromises = new Dictionary <CancellationToken, ReactivePropertyReusablePromise <T> >(CancellationTokenEqualityComparer.Default);
}
if (removablePromises.TryGetValue(cancellationToken, out var newPromise))
{
return(newPromise.Task);
}
newPromise = new ReactivePropertyReusablePromise <T>(cancellationToken);
removablePromises.Add(cancellationToken, newPromise);
cancellationToken.RegisterWithoutCaptureExecutionContext(Callback, Tuple.Create(this, newPromise));
return(newPromise.Task);
}
