Adding Replay operators.

AsyncRx.NET/System.Reactive.Async.Linq/System/Reactive/Linq/Operators/Replay.cs

@@ -0,0 +1,311 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the Apache 2.0 License.
+// See the LICENSE file in the project root for more information. 
+
+using System.Reactive.Concurrency;
+using System.Reactive.Subjects;
+using System.Threading.Tasks;
+
+namespace System.Reactive.Linq
+{
+    // REVIEW: Expose Replay using ConcurrentAsyncAsyncSubject<T> underneath.
+
+    partial class AsyncObservable
+    {
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>());
+        }
+
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>(scheduler));
+        }
+
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source, int bufferSize)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>(bufferSize));
+        }
+
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source, int bufferSize, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>(bufferSize, scheduler));
+        }
+
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source, TimeSpan window)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>(window));
+        }
+
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source, TimeSpan window, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>(window, scheduler));
+        }
+
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source, int bufferSize, TimeSpan window)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>(bufferSize, window));
+        }
+
+        public static IConnectableAsyncObservable<TSource> Replay<TSource>(this IAsyncObservable<TSource> source, int bufferSize, TimeSpan window, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, new SequentialReplayAsyncSubject<TSource>(bufferSize, window, scheduler));
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(scheduler), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector, int bufferSize)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(bufferSize), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector, int bufferSize, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(bufferSize, scheduler), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector, TimeSpan window)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(window), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector, TimeSpan window, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(window, scheduler), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector, int bufferSize, TimeSpan window)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(bufferSize, window), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, IAsyncObservable<TResult>> selector, int bufferSize, TimeSpan window, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => new SequentialReplayAsyncSubject<TSource>(bufferSize, window, scheduler), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>()), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>(scheduler)), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector, int bufferSize)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>(bufferSize)), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector, int bufferSize, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>(bufferSize, scheduler)), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector, TimeSpan window)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>(window)), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector, TimeSpan window, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>(window, scheduler)), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector, int bufferSize, TimeSpan window)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>(bufferSize, window)), selector);
+        }
+
+        public static IAsyncObservable<TResult> Replay<TSource, TResult>(this IAsyncObservable<TSource> source, Func<IAsyncObservable<TSource>, Task<IAsyncObservable<TResult>>> selector, int bufferSize, TimeSpan window, IAsyncScheduler scheduler)
+        {
+            if (source == null)
+                throw new ArgumentNullException(nameof(source));
+            if (selector == null)
+                throw new ArgumentNullException(nameof(selector));
+            if (bufferSize < 0)
+                throw new ArgumentOutOfRangeException(nameof(bufferSize));
+            if (window < TimeSpan.Zero)
+                throw new ArgumentOutOfRangeException(nameof(window));
+            if (scheduler == null)
+                throw new ArgumentNullException(nameof(scheduler));
+
+            return Multicast(source, () => Task.FromResult<IAsyncSubject<TSource, TSource>>(new SequentialReplayAsyncSubject<TSource>(bufferSize, window, scheduler)), selector);
+        }
+    }
+}