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Diffstat (limited to 'Rx.NET/System.Reactive.Core/Reactive/ObserverBase.cs')
-rw-r--r--Rx.NET/System.Reactive.Core/Reactive/ObserverBase.cs114
1 files changed, 0 insertions, 114 deletions
diff --git a/Rx.NET/System.Reactive.Core/Reactive/ObserverBase.cs b/Rx.NET/System.Reactive.Core/Reactive/ObserverBase.cs
deleted file mode 100644
index 389a923..0000000
--- a/Rx.NET/System.Reactive.Core/Reactive/ObserverBase.cs
+++ /dev/null
@@ -1,114 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
-
-using System.Threading;
-
-namespace System.Reactive
-{
- /// <summary>
- /// Abstract base class for implementations of the IObserver&lt;T&gt; interface.
- /// </summary>
- /// <remarks>This base class enforces the grammar of observers where OnError and OnCompleted are terminal messages.</remarks>
- /// <typeparam name="T">The type of the elements in the sequence.</typeparam>
- public abstract class ObserverBase<T> : IObserver<T>, IDisposable
- {
- private int isStopped;
-
- /// <summary>
- /// Creates a new observer in a non-stopped state.
- /// </summary>
- protected ObserverBase()
- {
- isStopped = 0;
- }
-
- /// <summary>
- /// Notifies the observer of a new element in the sequence.
- /// </summary>
- /// <param name="value">Next element in the sequence.</param>
- public void OnNext(T value)
- {
- if (isStopped == 0)
- OnNextCore(value);
- }
-
- /// <summary>
- /// Implement this method to react to the receival of a new element in the sequence.
- /// </summary>
- /// <param name="value">Next element in the sequence.</param>
- /// <remarks>This method only gets called when the observer hasn't stopped yet.</remarks>
- protected abstract void OnNextCore(T value);
-
- /// <summary>
- /// Notifies the observer that an exception has occurred.
- /// </summary>
- /// <param name="error">The error that has occurred.</param>
- /// <exception cref="ArgumentNullException"><paramref name="error"/> is null.</exception>
- public void OnError(Exception error)
- {
- if (error == null)
- throw new ArgumentNullException("error");
-
- if (Interlocked.Exchange(ref isStopped, 1) == 0)
- {
- OnErrorCore(error);
- }
- }
-
- /// <summary>
- /// Implement this method to react to the occurrence of an exception.
- /// </summary>
- /// <param name="error">The error that has occurred.</param>
- /// <remarks>This method only gets called when the observer hasn't stopped yet, and causes the observer to stop.</remarks>
- [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1716:IdentifiersShouldNotMatchKeywords", MessageId = "Error", Justification = "Same name as in the IObserver<T> definition of OnError in the BCL.")]
- protected abstract void OnErrorCore(Exception error);
-
- /// <summary>
- /// Notifies the observer of the end of the sequence.
- /// </summary>
- public void OnCompleted()
- {
- if (Interlocked.Exchange(ref isStopped, 1) == 0)
- {
- OnCompletedCore();
- }
- }
-
- /// <summary>
- /// Implement this method to react to the end of the sequence.
- /// </summary>
- /// <remarks>This method only gets called when the observer hasn't stopped yet, and causes the observer to stop.</remarks>
- protected abstract void OnCompletedCore();
-
- /// <summary>
- /// Disposes the observer, causing it to transition to the stopped state.
- /// </summary>
- public void Dispose()
- {
- Dispose(true);
- GC.SuppressFinalize(this);
- }
-
- /// <summary>
- /// Core implementation of IDisposable.
- /// </summary>
- /// <param name="disposing">true if the Dispose call was triggered by the IDisposable.Dispose method; false if it was triggered by the finalizer.</param>
- protected virtual void Dispose(bool disposing)
- {
- if (disposing)
- {
- isStopped = 1;
- }
- }
-
- internal bool Fail(Exception error)
- {
- if (Interlocked.Exchange(ref isStopped, 1) == 0)
- {
- OnErrorCore(error);
- return true;
- }
-
- return false;
- }
- }
-}