// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT license.

using System.Collections.Generic;

using System.Reflection;

namespace Microsoft.ClearScript.Util

{

internal sealed class MemberComparer<T> : EqualityComparer<T> where T : MemberInfo

{

public static readonly MemberComparer<T> Instance = new MemberComparer<T>();

private MemberComparer()

{

}

public override bool Equals(T x, T y)

{

try

{

return (x.Module == y.Module) && (x.MetadataToken == y.MetadataToken);

}

catch

{

return x == y;

}

}

public override int GetHashCode(T obj)

{

// ReSharper disable once ConditionIsAlwaysTrueOrFalse

return (obj == null) ? 0 : obj.GetHashCode();

}

}

}