public IDisposable Subscribe(IObserver <T> observer)
{
var en = default(IEnumerator <ISingleSource <T> >);
try
{
en = RequireNonNullRef(sources.GetEnumerator(), "The GetEnumerator returned a null IEnumerator");
}
catch (Exception ex)
{
observer.OnError(ex);
return(DisposableHelper.EMPTY);
}
if (maxConcurrency == int.MaxValue)
{
var parent = new SingleConcatEagerAllCoordinator <T>(observer, delayErrors);
for (; ;)
{
var b = false;
var src = default(ISingleSource <T>);
try
{
b = en.MoveNext();
if (!b)
{
break;
}
src = en.Current;
}
catch (Exception ex)
{
parent.SubscribeTo(SingleSource.Error <T>(ex));
break;
}
if (!parent.SubscribeTo(src))
{
break;
}
}
en.Dispose();
parent.Done();
return(parent);
}
else
{
var parent = new ConcatEagerLimitedCoordinator(observer, en, maxConcurrency, delayErrors);
parent.Drain();
return(parent);
}
}
public IDisposable Subscribe(IObserver <T> observer)
{
if (maxConcurrency == int.MaxValue)
{
var parent = new SingleConcatEagerAllCoordinator <T>(observer, delayErrors);
foreach (var src in sources)
{
if (!parent.SubscribeTo(src))
{
break;
}
}
parent.Done();
return(parent);
}
else
{
var parent = new ConcatEagerLimitedCoordinator(observer, sources, maxConcurrency, delayErrors);
parent.Drain();
return(parent);
}
}