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62 lines
3.0 KiB
62 lines
3.0 KiB
3 years ago
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// Animancer // https://kybernetik.com.au/animancer // Copyright 2021 Kybernetik //
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using System.Collections.Generic;
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namespace Animancer
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{
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/// <summary>
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/// An <see cref="IEqualityComparer{T}"/> which ignores overloaded equality operators so it is faster than
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/// <see cref="EqualityComparer{T}.Default"/> for types derived from <see cref="UnityEngine.Object"/>.
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/// </summary>
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/// <remarks>
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/// This class is used when <see cref="AnimancerPlayable.StateDictionary.ReferenceKeysOnly"/> is false.
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/// <para></para>
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/// Documentation: <see href="https://kybernetik.com.au/animancer/docs/manual/playing/states#performance">Performance</see>
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/// </remarks>
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/// https://kybernetik.com.au/animancer/api/Animancer/FastComparer
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///
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public sealed class FastComparer : IEqualityComparer<object>
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{
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/************************************************************************************************************************/
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/// <summary>Singleton instance.</summary>
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public static readonly FastComparer Instance = new FastComparer();
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/// <summary>Calls <see cref="object.Equals(object, object)"/>.</summary>
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bool IEqualityComparer<object>.Equals(object x, object y) => Equals(x, y);
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/// <summary>Calls <see cref="object.GetHashCode"/>.</summary>
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int IEqualityComparer<object>.GetHashCode(object obj) => obj.GetHashCode();
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/************************************************************************************************************************/
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}
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/// <summary>
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/// An <see cref="IEqualityComparer{T}"/> which uses <see cref="object.ReferenceEquals"/> to be even faster than
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/// <see cref="FastComparer"/>. Unfortunately this means it will not work for boxed value types (such as enums).
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/// </summary>
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/// <remarks>
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/// This class is used when <see cref="AnimancerPlayable.StateDictionary.ReferenceKeysOnly"/> is true.
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/// <para></para>
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/// Documentation: <see href="https://kybernetik.com.au/animancer/docs/manual/playing/states#performance">Performance</see>
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/// </remarks>
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/// https://kybernetik.com.au/animancer/api/Animancer/FastReferenceComparer
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///
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public sealed class FastReferenceComparer : IEqualityComparer<object>
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{
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/************************************************************************************************************************/
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/// <summary>Singleton instance.</summary>
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public static readonly FastReferenceComparer Instance = new FastReferenceComparer();
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/// <summary>Calls <see cref="object.ReferenceEquals"/>.</summary>
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bool IEqualityComparer<object>.Equals(object x, object y) => ReferenceEquals(x, y);
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/// <summary>Calls <see cref="object.GetHashCode"/>.</summary>
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int IEqualityComparer<object>.GetHashCode(object obj) => obj.GetHashCode();
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/************************************************************************************************************************/
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}
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}
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