public IDisposable Subscribe(IObserver <T> observer)
{
if (isDisposed)
{
observer.OnCompleted();
return(Disposable.Empty);
}
// raise latest value on subscribe
observer.OnNext(value);
// subscribe node, node as subscription.
var next = new ObserverNode <T>(this, observer);
if (root == null)
{
root = last = next;
}
else
{
last.Next = next;
next.Previous = last;
last = next;
}
return(next);
}
protected virtual void Dispose(bool disposing)
{
if (isDisposed)
{
return;
}
sourceConnection.Dispose();
var node = root;
root = last = null;
isDisposed = true;
while (node != null)
{
node.OnCompleted();
node = node.Next;
}
#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
commonPromise?.SetCanceled();
commonPromise = null;
if (removablePromises != null)
{
foreach (var item in removablePromises)
{
item.Value.SetCanceled();
}
removablePromises = null;
}
#endif
}
protected virtual void Dispose(bool disposing)
{
if (isDisposed)
{
return;
}
var node = root;
root = last = null;
isDisposed = true;
while (node != null)
{
node.OnCompleted();
node = node.Next;
}
#if (CSHARP_7_OR_LATER)
commonPromise?.SetCanceled();
commonPromise = null;
if (removablePromises != null)
{
foreach (var item in removablePromises)
{
item.Value.SetCanceled();
}
removablePromises = null;
}
#endif
}
void IObserver<T>.OnError(Exception error) {
lastException = error;
// call source.OnError
var node = root;
while (node != null) {
node.OnError(error);
node = node.Next;
}
root = last = null;
}
public IDisposable Subscribe(IObserver <T> observer)
{
if (lastException != null)
{
observer.OnError(lastException);
return(Disposable.Empty);
}
if (isSourceCompleted)
{
if (canPublishValueOnSubscribe)
{
observer.OnNext(latestValue);
observer.OnCompleted();
return(Disposable.Empty);
}
else
{
observer.OnCompleted();
return(Disposable.Empty);
}
}
if (isDisposed)
{
observer.OnCompleted();
return(Disposable.Empty);
}
if (canPublishValueOnSubscribe)
{
observer.OnNext(latestValue);
}
// subscribe node, node as subscription.
var next = new ObserverNode <T>(this, observer);
if (root == null)
{
root = last = next;
}
else
{
last.Next = next;
next.Previous = last;
last = next;
}
return(next);
}
void IObserverLinkedList<T>.UnsubscribeNode(ObserverNode<T> node) {
if (node == root) {
root = node.Next;
}
if (node == last) {
last = node.Previous;
}
if (node.Previous != null) {
node.Previous.Next = node.Next;
}
if (node.Next != null) {
node.Next.Previous = node.Previous;
}
}
protected virtual void Dispose(bool disposing)
{
if (isDisposed)
{
return;
}
var node = root;
root = last = null;
isDisposed = true;
while (node != null)
{
node.OnCompleted();
node = node.Next;
}
}
void IObserver <T> .OnCompleted()
{
isSourceCompleted = true;
root = last = null;
}