// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Collections;
using System.Globalization;
 
namespace System
{
    [Serializable]
    internal class InvariantComparer : IComparer
    {
        private CompareInfo _compareInfo;
        internal static readonly InvariantComparer Default = new InvariantComparer();
 
        internal InvariantComparer()
        {
            _compareInfo = CultureInfo.InvariantCulture.CompareInfo;
        }
 
        public int Compare(Object a, Object b)
        {
            String sa = a as String;
            String sb = b as String;
            if (sa != null && sb != null)
            {
                return _compareInfo.Compare(sa, sb);
            }
            else
            {
                return Comparer.Default.Compare(a, b);
            }
        }
    }
}