//-----------------------------------------------------------------------
// <copyright file="IdentityEqualityComparer.cs" company="Microsoft">
//      Copyright (c) Microsoft Corporation. All rights reserved.
// 
//      THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, 
//      EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES 
//      OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
// ----------------------------------------------------------------------------------
//      The example companies, organizations, products, domain names,
//      e-mail addresses, logos, people, places, and events depicted
//      herein are fictitious.  No association with any real company,
//      organization, product, domain name, email address, logo, person,
//      places, or events is intended or should be inferred.
// </copyright>
//-----------------------------------------------------------------------

using System.Collections.Generic;
using System.Runtime.CompilerServices;

namespace Microsoft.PSharp
{
    public class IdentityEqualityComparer<T> : IEqualityComparer<T> where T : class
    {
        public int GetHashCode(T value)
        {
            return RuntimeHelpers.GetHashCode(value);
        }

        public bool Equals(T left, T right)
        {
            return left == right; // Reference identity comparison
        }
    }
}
