public static IObservable <TSource> ThrottleFirstFrame <TSource>(this IObservable <TSource> source, int frameCount,
FrameCountType frameCountType = FrameCountType.Update)
{
return(Observable.Create <TSource>(observer =>
{
var gate = new object();
var open = true;
var cancelable = new SerialDisposable();
var subscription = source.Subscribe(x =>
{
lock (gate)
{
if (!open)
{
return;
}
observer.OnNext(x);
open = false;
}
var d = new SingleAssignmentDisposable();
cancelable.Disposable = d;
d.Disposable = TimerFrame(frameCount, frameCountType)
.Subscribe(_ =>
{
lock (gate)
{
open = true;
}
});
},
exception =>
{
cancelable.Dispose();
lock (gate)
{
observer.OnError(exception);
}
},
() =>
{
cancelable.Dispose();
lock (gate)
{
observer.OnCompleted();
}
});
return new CompositeDisposable(subscription, cancelable);
}));
}
public static IObservable <TSource> ThrottleFirst <TSource>(this IObservable <TSource> source, TimeSpan dueTime, IScheduler scheduler)
{
return(Observable.Create <TSource>(observer =>
{
var gate = new object();
var open = true;
var cancelable = new SerialDisposable();
var subscription = source.Subscribe(x =>
{
lock (gate)
{
if (!open)
{
return;
}
observer.OnNext(x);
open = false;
}
var d = new SingleAssignmentDisposable();
cancelable.Disposable = d;
d.Disposable = scheduler.Schedule(dueTime, () =>
{
lock (gate)
{
open = true;
}
});
},
exception =>
{
cancelable.Dispose();
lock (gate)
{
observer.OnError(exception);
}
},
() =>
{
cancelable.Dispose();
lock (gate)
{
observer.OnCompleted();
}
});
return new CompositeDisposable(subscription, cancelable);
}));
}
public static IObservable <T> SubscribeOn <T>(this IObservable <T> source, IScheduler scheduler)
{
return(Observable.Create <T>(observer =>
{
var m = new SingleAssignmentDisposable();
var d = new SerialDisposable();
d.Disposable = m;
m.Disposable = scheduler.Schedule(() =>
{
d.Disposable = new ScheduledDisposable(scheduler, source.Subscribe(observer));
});
return d;
}));
}
public static IObservable <T> Catch <T, TException>(this IObservable <T> source, Func <TException, IObservable <T> > errorHandler)
where TException : Exception
{
return(Observable.Create <T>(observer =>
{
var serialDisposable = new SerialDisposable();
var rootDisposable = new SingleAssignmentDisposable();
serialDisposable.Disposable = rootDisposable;
rootDisposable.Disposable = source.Subscribe(observer.OnNext,
exception =>
{
var e = exception as TException;
if (e != null)
{
IObservable <T> next;
try
{
if (errorHandler == Stubs.CatchIgnore <T> )
{
next = Observable.Empty <T>(); // for avoid iOS AOT
}
else
{
next = errorHandler(e);
}
}
catch (Exception ex)
{
observer.OnError(ex);
return;
}
var d = new SingleAssignmentDisposable();
serialDisposable.Disposable = d;
d.Disposable = next.Subscribe(observer);
}
else
{
observer.OnError(exception);
}
}, observer.OnCompleted);
return serialDisposable;
}));
}
public static IObservable <IList <T> > Buffer <T>(this IObservable <T> source, TimeSpan timeSpan, TimeSpan timeShift, IScheduler scheduler)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
return(Observable.Create <IList <T> >(observer =>
{
var totalTime = TimeSpan.Zero;
var nextShift = timeShift;
var nextSpan = timeSpan;
var gate = new object();
var q = new Queue <IList <T> >();
var timerD = new SerialDisposable();
var createTimer = default(Action);
createTimer = () =>
{
var m = new SingleAssignmentDisposable();
timerD.Disposable = m;
var isSpan = false;
var isShift = false;
if (nextSpan == nextShift)
{
isSpan = true;
isShift = true;
}
else if (nextSpan < nextShift)
{
isSpan = true;
}
else
{
isShift = true;
}
var newTotalTime = isSpan ? nextSpan : nextShift;
var ts = newTotalTime - totalTime;
totalTime = newTotalTime;
if (isSpan)
{
nextSpan += timeShift;
}
if (isShift)
{
nextShift += timeShift;
}
m.Disposable = scheduler.Schedule(ts, () =>
{
lock (gate)
{
if (isShift)
{
var s = new List <T>();
q.Enqueue(s);
}
if (isSpan)
{
var s = q.Dequeue();
observer.OnNext(s);
}
}
createTimer();
});
};
q.Enqueue(new List <T>());
createTimer();
return source.Subscribe(
x =>
{
lock (gate)
{
foreach (var s in q)
{
s.Add(x);
}
}
},
observer.OnError,
() =>
{
lock (gate)
{
foreach (var list in q)
{
observer.OnNext(list);
}
observer.OnCompleted();
}
}
);
}));
}
public static IObservable <IList <T> > Buffer <T>(this IObservable <T> source, TimeSpan timeSpan, int count, IScheduler scheduler)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (count <= 0)
{
throw new ArgumentOutOfRangeException("count <= 0");
}
return(Observable.Create <IList <T> >(observer =>
{
var list = new List <T>();
var gate = new object();
var timerId = 0L;
var d = new CompositeDisposable(2);
var timerD = new SerialDisposable();
// timer
d.Add(timerD);
Action createTimer = () =>
{
var currentTimerId = timerId;
var timerS = new SingleAssignmentDisposable();
timerD.Disposable = timerS; // restart timer(dispose before)
timerS.Disposable = scheduler.Schedule(timeSpan, self =>
{
List <T> currentList;
lock (gate)
{
if (currentTimerId != timerId)
{
return;
}
currentList = list;
if (currentList.Count != 0)
{
list = new List <T>();
}
}
if (currentList.Count != 0)
{
observer.OnNext(currentList);
}
self(timeSpan);
});
};
createTimer();
// subscription
d.Add(source.Subscribe(x =>
{
List <T> currentList = null;
lock (gate)
{
list.Add(x);
if (list.Count == count)
{
currentList = list;
list = new List <T>();
timerId++;
createTimer();
}
}
if (currentList != null)
{
observer.OnNext(currentList);
}
}, observer.OnError, () =>
{
lock (gate)
{
timerId++;
}
var currentList = list;
observer.OnNext(currentList);
observer.OnCompleted();
}));
return d;
}));
}
public static IObservable <TSource> Catch <TSource>(this IEnumerable <IObservable <TSource> > sources)
{
// this code is borrowed from RxOfficial(rx.codeplex.com) and modified
return(Observable.Create <TSource>(observer =>
{
var gate = new object();
var isDisposed = false;
var e = sources.AsSafeEnumerable().GetEnumerator();
var subscription = new SerialDisposable();
var lastException = default(Exception);
var cancelable = Scheduler.DefaultSchedulers.TailRecursion.Schedule(self =>
{
lock (gate)
{
var current = default(IObservable <TSource>);
var hasNext = false;
var ex = default(Exception);
if (!isDisposed)
{
try
{
hasNext = e.MoveNext();
if (hasNext)
{
current = e.Current;
}
else
{
e.Dispose();
}
}
catch (Exception exception)
{
ex = exception;
e.Dispose();
}
}
else
{
return;
}
if (ex != null)
{
observer.OnError(ex);
return;
}
if (!hasNext)
{
if (lastException != null)
{
observer.OnError(lastException);
}
else
{
observer.OnCompleted();
}
return;
}
var d = new SingleAssignmentDisposable();
subscription.Disposable = d;
d.Disposable = current.Subscribe(observer.OnNext, exception =>
{
lastException = exception;
self();
}, observer.OnCompleted);
}
});
return new CompositeDisposable(subscription, cancelable, Disposable.Create(() =>
{
lock (gate)
{
e.Dispose();
isDisposed = true;
}
}));
}));
}
public static IObservable <T> Switch <T> (this IObservable <IObservable <T> > sources)
{
// this code is borrwed from RxOfficial(rx.codeplex.com)
return(Observable.Create <T> (observer => {
var gate = new object();
var innerSubscription = new SerialDisposable();
var isStopped = false;
var latest = 0UL;
var hasLatest = false;
var subscription = sources.Subscribe(
innerSource => {
var id = default(ulong);
lock (gate) {
id = unchecked (++latest);
hasLatest = true;
}
var d = new SingleAssignmentDisposable();
innerSubscription.Disposable = d;
d.Disposable = innerSource.Subscribe(
x => {
lock (gate) {
if (latest == id)
{
observer.OnNext(x);
}
}
},
exception => {
lock (gate) {
if (latest == id)
{
observer.OnError(exception);
}
}
},
() => {
lock (gate) {
if (latest == id)
{
hasLatest = false;
if (isStopped)
{
observer.OnCompleted();
}
}
}
});
},
exception => {
lock (gate)
observer.OnError(exception);
},
() => {
lock (gate) {
isStopped = true;
if (!hasLatest)
{
observer.OnCompleted();
}
}
});
return new CompositeDisposable(subscription, innerSubscription);
}));
}
static IObservable <T> ConcatCore <T> (IEnumerable <IObservable <T> > sources)
{
return(Observable.Create <T> (observer => {
var isDisposed = false;
var e = sources.AsSafeEnumerable().GetEnumerator();
var subscription = new SerialDisposable();
var gate = new object();
var schedule = Scheduler.DefaultSchedulers.TailRecursion.Schedule(self => {
lock (gate) {
if (isDisposed)
{
return;
}
var current = default(IObservable <T>);
var hasNext = false;
var ex = default(Exception);
try {
hasNext = e.MoveNext();
if (hasNext)
{
current = e.Current;
if (current == null)
{
throw new InvalidOperationException("sequence is null.");
}
}
else
{
e.Dispose();
}
} catch (Exception exception) {
ex = exception;
e.Dispose();
}
if (ex != null)
{
observer.OnError(ex);
return;
}
if (!hasNext)
{
observer.OnCompleted();
return;
}
var source = e.Current;
var d = new SingleAssignmentDisposable();
subscription.Disposable = d;
d.Disposable = source.Subscribe(observer.OnNext, observer.OnError, self); // OnCompleted, run self
}
});
return new CompositeDisposable(schedule, subscription, Disposable.Create(() => {
lock (gate) {
isDisposed = true;
e.Dispose();
}
}));
}));
}
public static IObservable <TSource> Throttle <TSource>(this IObservable <TSource> source, TimeSpan dueTime, IScheduler scheduler)
{
// this code is borrowed from Rx Official(rx.codeplex.com)
return(new AnonymousObservable <TSource>(observer =>
{
var gate = new object();
var value = default(TSource);
var hasValue = false;
var cancelable = new SerialDisposable();
var id = 0UL;
var subscription = source.Subscribe(x =>
{
ulong currentid;
lock (gate)
{
hasValue = true;
value = x;
id = unchecked (id + 1);
currentid = id;
}
var d = new SingleAssignmentDisposable();
cancelable.Disposable = d;
d.Disposable = scheduler.Schedule(dueTime, () =>
{
lock (gate)
{
if (hasValue && id == currentid)
{
observer.OnNext(value);
}
hasValue = false;
}
});
},
exception =>
{
cancelable.Dispose();
lock (gate)
{
observer.OnError(exception);
hasValue = false;
id = unchecked (id + 1);
}
},
() =>
{
cancelable.Dispose();
lock (gate)
{
if (hasValue)
{
observer.OnNext(value);
}
observer.OnCompleted();
hasValue = false;
id = unchecked (id + 1);
}
});
return new CompositeDisposable(subscription, cancelable);
}));
}
public static IObservable <TSource> Delay <TSource>(this IObservable <TSource> source, TimeSpan dueTime, IScheduler scheduler)
{
// This code is borrowed from Rx(rx.codeplex.com)
return(Observable.Create <TSource>(observer =>
{
var gate = new object();
var q = new Queue <Timestamped <Notification <TSource> > >();
var active = false;
var running = false;
var cancelable = new SerialDisposable();
var exception = default(Exception);
var subscription = source.Materialize().Timestamp(scheduler).Subscribe(notification =>
{
var shouldRun = false;
lock (gate)
{
if (notification.Value.Kind == NotificationKind.OnError)
{
q.Clear();
q.Enqueue(notification);
exception = notification.Value.Exception;
shouldRun = !running;
}
else
{
q.Enqueue(new Timestamped <Notification <TSource> >(notification.Value, notification.Timestamp.Add(dueTime)));
shouldRun = !active;
active = true;
}
}
if (shouldRun)
{
if (exception != null)
{
observer.OnError(exception);
}
else
{
var d = new SingleAssignmentDisposable();
cancelable.Disposable = d;
d.Disposable = scheduler.Schedule(dueTime, self =>
{
lock (gate)
{
if (exception != null)
{
return;
}
running = true;
}
Notification <TSource> result;
do
{
result = null;
lock (gate)
{
if (q.Count > 0 && q.Peek().Timestamp.CompareTo(scheduler.Now) <= 0)
{
result = q.Dequeue().Value;
}
}
if (result != null)
{
result.Accept(observer);
}
} while (result != null);
var shouldRecurse = false;
var recurseDueTime = TimeSpan.Zero;
var e = default(Exception);
lock (gate)
{
if (q.Count > 0)
{
shouldRecurse = true;
recurseDueTime = TimeSpan.FromTicks(Math.Max(0, q.Peek().Timestamp.Subtract(scheduler.Now).Ticks));
}
else
{
active = false;
}
e = exception;
running = false;
}
if (e != null)
{
observer.OnError(e);
}
else if (shouldRecurse)
{
self(recurseDueTime);
}
});
}
}
});
return new CompositeDisposable(subscription, cancelable);
}));
}
public void Serial()
{
SetScehdulerForImport();
var d = new SerialDisposable();
d.IsDisposed.IsFalse();
var id1 = new IdDisp(1);
var id2 = new IdDisp(2);
var id3 = new IdDisp(3);
// dispose first
d.Dispose();
d.IsDisposed.IsTrue();
d.Disposable = id1; id1.IsDisposed.IsTrue();
d.Disposable = id2; id2.IsDisposed.IsTrue();
d.Disposable = id3; id3.IsDisposed.IsTrue();
// normal flow
d = new SerialDisposable();
id1 = new IdDisp(1);
id2 = new IdDisp(2);
id3 = new IdDisp(3);
d.Disposable = id1; id1.IsDisposed.IsFalse();
d.Dispose();
id1.IsDisposed.IsTrue();
d.Disposable = id2; id2.IsDisposed.IsTrue();
d.Disposable = id3; id3.IsDisposed.IsTrue();
// exception flow
d = new SerialDisposable();
id1 = new IdDisp(1);
id2 = new IdDisp(2);
id3 = new IdDisp(3);
d.Disposable = id1;
id1.IsDisposed.IsFalse();
d.Disposable = id2;
id1.IsDisposed.IsTrue();
id2.IsDisposed.IsFalse();
d.Disposable = id3;
id2.IsDisposed.IsTrue();
id3.IsDisposed.IsFalse();
d.Dispose();
id3.IsDisposed.IsTrue();
// null
d = new SerialDisposable();
id1 = new IdDisp(1);
d.Disposable = null;
d.Dispose();
d.Disposable = null;
UniRx.Scheduler.SetDefaultForUnity();
}
static IObservable <T> RepeatUntilCore <T>(this IEnumerable <IObservable <T> > sources, IObservable <Unit> trigger, GameObject lifeTimeChecker)
{
return(Observable.Create <T>(observer =>
{
var isFirstSubscribe = true;
var isDisposed = false;
var isStopped = false;
var e = sources.AsSafeEnumerable().GetEnumerator();
var subscription = new SerialDisposable();
var schedule = new SingleAssignmentDisposable();
var gate = new object();
var stopper = trigger.Subscribe(_ =>
{
lock (gate)
{
isStopped = true;
e.Dispose();
subscription.Dispose();
schedule.Dispose();
observer.OnCompleted();
}
}, observer.OnError);
schedule.Disposable = Scheduler.CurrentThread.Schedule(self =>
{
lock (gate)
{
if (isDisposed)
{
return;
}
if (isStopped)
{
return;
}
var current = default(IObservable <T>);
var hasNext = false;
var ex = default(Exception);
try
{
hasNext = e.MoveNext();
if (hasNext)
{
current = e.Current;
if (current == null)
{
throw new InvalidOperationException("sequence is null.");
}
}
else
{
e.Dispose();
}
}
catch (Exception exception)
{
ex = exception;
e.Dispose();
}
if (ex != null)
{
stopper.Dispose();
observer.OnError(ex);
return;
}
if (!hasNext)
{
stopper.Dispose();
observer.OnCompleted();
return;
}
var source = e.Current;
var d = new SingleAssignmentDisposable();
subscription.Disposable = d;
var repeatObserver = Observer.Create <T>(observer.OnNext, observer.OnError, self);
if (isFirstSubscribe)
{
isFirstSubscribe = false;
d.Disposable = source.Subscribe(repeatObserver);
}
else
{
MainThreadDispatcher.SendStartCoroutine(SubscribeAfterEndOfFrame(d, source, repeatObserver, lifeTimeChecker));
}
}
});
return new CompositeDisposable(schedule, subscription, stopper, Disposable.Create(() =>
{
lock (gate)
{
isDisposed = true;
e.Dispose();
}
}));
}));
}
public static IObservable <T> TimeoutFrame <T>(this IObservable <T> source, int frameCount, FrameCountType frameCountType = FrameCountType.Update)
{
return(Observable.Create <T>(observer =>
{
object gate = new object();
var objectId = 0ul;
var isTimeout = false;
Func <ulong, IDisposable> runTimer = (timerId) =>
{
return Observable.TimerFrame(frameCount, frameCountType)
.Subscribe(_ =>
{
lock (gate)
{
if (objectId == timerId)
{
isTimeout = true;
}
}
if (isTimeout)
{
observer.OnError(new TimeoutException());
}
});
};
var timerDisposable = new SerialDisposable();
timerDisposable.Disposable = runTimer(objectId);
var sourceSubscription = new SingleAssignmentDisposable();
sourceSubscription.Disposable = source.Subscribe(x =>
{
bool timeout;
lock (gate)
{
timeout = isTimeout;
objectId++;
}
if (timeout)
{
return;
}
timerDisposable.Disposable = Disposable.Empty; // cancel old timer
observer.OnNext(x);
timerDisposable.Disposable = runTimer(objectId);
}, ex =>
{
bool timeout;
lock (gate)
{
timeout = isTimeout;
objectId++;
}
if (timeout)
{
return;
}
timerDisposable.Dispose();
observer.OnError(ex);
}, () =>
{
bool timeout;
lock (gate)
{
timeout = isTimeout;
objectId++;
}
if (timeout)
{
return;
}
timerDisposable.Dispose();
observer.OnCompleted();
});
return new CompositeDisposable {
timerDisposable, sourceSubscription
};
}));
}
public static IObservable <TSource> ThrottleFrame <TSource>(this IObservable <TSource> source, int frameCount, FrameCountType frameCountType = FrameCountType.Update)
{
return(new AnonymousObservable <TSource>(observer =>
{
var gate = new object();
var value = default(TSource);
var hasValue = false;
var cancelable = new SerialDisposable();
var id = 0UL;
var subscription = source.Subscribe(x =>
{
ulong currentid;
lock (gate)
{
hasValue = true;
value = x;
id = unchecked (id + 1);
currentid = id;
}
var d = new SingleAssignmentDisposable();
cancelable.Disposable = d;
d.Disposable = Observable.TimerFrame(frameCount, frameCountType)
.Subscribe(_ =>
{
lock (gate)
{
if (hasValue && id == currentid)
{
observer.OnNext(value);
}
hasValue = false;
}
});
},
exception =>
{
cancelable.Dispose();
lock (gate)
{
observer.OnError(exception);
hasValue = false;
id = unchecked (id + 1);
}
},
() =>
{
cancelable.Dispose();
lock (gate)
{
if (hasValue)
{
observer.OnNext(value);
}
observer.OnCompleted();
hasValue = false;
id = unchecked (id + 1);
}
});
return new CompositeDisposable(subscription, cancelable);
}));
}
