125 lines
5.0 KiB
C#
125 lines
5.0 KiB
C#
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
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using System;
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using System.Diagnostics;
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using System.Globalization;
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namespace Microsoft.Reactive.Testing
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{
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/// <summary>
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/// Records information about subscriptions to and unsubscriptions from observable sequences.
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/// </summary>
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#if !NO_DEBUGGER_ATTRIBUTES
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[DebuggerDisplay("({Subscribe}, {Unsubscribe})")]
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#endif
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#if !NO_SERIALIZABLE
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[Serializable]
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#endif
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public struct Subscription : IEquatable<Subscription>
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{
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/// <summary>
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/// Infinite virtual time value, used to indicate an unsubscription never took place.
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/// </summary>
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public const long Infinite = long.MaxValue;
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private long _subscribe;
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private long _unsubscribe;
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/// <summary>
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/// Gets the subscription virtual time.
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/// </summary>
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public long Subscribe { get { return _subscribe; } }
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/// <summary>
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/// Gets the unsubscription virtual time.
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/// </summary>
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public long Unsubscribe { get { return _unsubscribe; } }
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/// <summary>
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/// Creates a new subscription object with the given virtual subscription time.
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/// </summary>
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/// <param name="subscribe">Virtual time at which the subscription occurred.</param>-
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public Subscription(long subscribe)
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{
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_subscribe = subscribe;
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_unsubscribe = Infinite;
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}
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/// <summary>
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/// Creates a new subscription object with the given virtual subscription and unsubscription time.
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/// </summary>
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/// <param name="subscribe">Virtual time at which the subscription occurred.</param>
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/// <param name="unsubscribe">Virtual time at which the unsubscription occurred.</param>
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public Subscription(long subscribe, long unsubscribe)
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{
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_subscribe = subscribe;
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_unsubscribe = unsubscribe;
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}
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/// <summary>
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/// Checks whether the given subscription is equal to the current instance.
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/// </summary>
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/// <param name="other">Subscription object to check for equality.</param>
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/// <returns>true if both objects are equal; false otherwise.</returns>
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public bool Equals(Subscription other)
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{
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return Subscribe == other.Subscribe && Unsubscribe == other.Unsubscribe;
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}
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/// <summary>
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/// Determines whether the two specified Subscription values have the same Subscribe and Unsubscribe.
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/// </summary>
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/// <param name="left">The first Subscription value to compare.</param>
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/// <param name="right">The second Subscription value to compare.</param>
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/// <returns>true if the first Subscription value has the same Subscribe and Unsubscribe as the second Subscription value; otherwise, false.</returns>
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public static bool operator==(Subscription left, Subscription right)
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{
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return left.Equals(right);
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}
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/// <summary>
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/// Determines whether the two specified Subscription values don't have the same Subscribe and Unsubscribe.
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/// </summary>
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/// <param name="left">The first Subscription value to compare.</param>
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/// <param name="right">The second Subscription value to compare.</param>
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/// <returns>true if the first Subscription value has a different Subscribe or Unsubscribe as the second Subscription value; otherwise, false.</returns>
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public static bool operator !=(Subscription left, Subscription right)
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{
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return !left.Equals(right);
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}
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/// <summary>
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/// Determines whether the specified System.Object is equal to the current Subscription value.
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/// </summary>
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/// <param name="obj">The System.Object to compare with the current Subscription value.</param>
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/// <returns>true if the specified System.Object is equal to the current Subscription value; otherwise, false.</returns>
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public override bool Equals(object obj)
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{
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if (obj is Subscription)
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return Equals((Subscription)obj);
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return false;
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}
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/// <summary>
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/// Returns the hash code for the current Subscription value.
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/// </summary>
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/// <returns>A hash code for the current Subscription value.</returns>
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public override int GetHashCode()
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{
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return Subscribe.GetHashCode() ^ Unsubscribe.GetHashCode();
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}
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/// <summary>
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/// Returns a string representation of the current Subscription value.
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/// </summary>
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/// <returns>String representation of the current Subscription value.</returns>
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public override string ToString()
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{
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if (Unsubscribe == Infinite)
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return string.Format(CultureInfo.CurrentCulture, "({0}, Infinite)", Subscribe);
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else
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return string.Format(CultureInfo.CurrentCulture, "({0}, {1})", Subscribe, Unsubscribe);
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}
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}
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}
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