EnumComparer.cs

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using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
using System.Runtime.Serialization;
 
namespace System.Collections.Generic;
 
[Serializable]
internal sealed class EnumComparer<T> : Comparer<T>, ISerializable where T : struct, Enum
{
    public override int Compare(T x, T y)
    {
        return RuntimeHelpers.EnumCompareTo(x, y);
    }
 
    public EnumComparer()
    {
    }
 
    private EnumComparer(SerializationInfo info, StreamingContext context)
    {
    }
 
    public override bool Equals([NotNullWhen(true)] object obj)
    {
        if (obj != null)
        {
            return GetType() == obj.GetType();
        }
        return false;
    }
 
    public override int GetHashCode()
    {
        return GetType().GetHashCode();
    }
 
    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {
        info.SetType(typeof(ObjectComparer<T>));
    }
}