ActivityLink.cs

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using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
 
namespace System.Diagnostics;
 
public readonly struct ActivityLink : IEquatable<ActivityLink>
{
    public ActivityContext Context { get; }
 
    public IEnumerable<KeyValuePair<string, object?>>? Tags { get; }
 
    public ActivityLink(ActivityContext context, ActivityTagsCollection? tags = null)
    {
        Context = context;
        Tags = tags;
    }
 
    public override bool Equals([NotNullWhen(true)] object? obj)
    {
        if (obj is ActivityLink value)
        {
            return Equals(value);
        }
        return false;
    }
 
    public bool Equals(ActivityLink value)
    {
        if (Context == value.Context)
        {
            return value.Tags == Tags;
        }
        return false;
    }
 
    public static bool operator ==(ActivityLink left, ActivityLink right)
    {
        return left.Equals(right);
    }
 
    public static bool operator !=(ActivityLink left, ActivityLink right)
    {
        return !left.Equals(right);
    }
 
    public override int GetHashCode()
    {
        HashCode hashCode = default(HashCode);
        hashCode.Add(Context);
        if (Tags != null)
        {
            foreach (KeyValuePair<string, object> tag in Tags)
            {
                hashCode.Add(tag.Key);
                hashCode.Add(tag.Value);
            }
        }
        return hashCode.ToHashCode();
    }
}