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#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2015 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#endregion
using System;
namespace Google.Protobuf
{
/// <summary>
/// Struct used to hold the keys for the fieldByNumber table in DescriptorPool and the keys for the
/// extensionByNumber table in ExtensionRegistry.
/// </summary>
internal struct ObjectIntPair<T> : IEquatable<ObjectIntPair<T>> where T : class
{
private readonly int number;
private readonly T obj;
internal ObjectIntPair(T obj, int number)
{
this.number = number;
this.obj = obj;
}
public bool Equals(ObjectIntPair<T> other)
{
return obj == other.obj
&& number == other.number;
}
public override bool Equals(object obj) => obj is ObjectIntPair<T> pair && Equals(pair);
public override int GetHashCode()
{
return obj.GetHashCode() * ((1 << 16) - 1) + number;
}
}
}