46 lines
1.7 KiB
C#
46 lines
1.7 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT License.
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// See the LICENSE file in the project root for more information.
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namespace System.Reactive.Disposables
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{
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/// <summary>
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/// Represents a disposable resource which only allows a single assignment of its underlying disposable resource.
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/// If an underlying disposable resource has already been set, future attempts to set the underlying disposable resource will throw an <see cref="InvalidOperationException"/>.
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/// </summary>
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public sealed class SingleAssignmentDisposable : ICancelable
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{
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private SingleAssignmentDisposableValue _current;
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/// <summary>
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/// Initializes a new instance of the <see cref="SingleAssignmentDisposable"/> class.
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/// </summary>
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public SingleAssignmentDisposable()
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{
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}
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/// <summary>
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/// Gets a value that indicates whether the object is disposed.
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/// </summary>
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public bool IsDisposed => _current.IsDisposed;
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/// <summary>
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/// Gets or sets the underlying disposable. After disposal, the result of getting this property is undefined.
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/// </summary>
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/// <exception cref="InvalidOperationException">Thrown if the <see cref="SingleAssignmentDisposable"/> has already been assigned to.</exception>
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public IDisposable? Disposable
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{
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get => _current.Disposable;
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set => _current.Disposable = value;
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}
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/// <summary>
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/// Disposes the underlying disposable.
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/// </summary>
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public void Dispose()
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{
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_current.Dispose();
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}
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}
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}
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