using System.Collections.Generic;

namespace SerializableMigration
{
    public class SerializableMetadataComparer : IComparer<SerializableMetadata>
    {
        public int Compare(SerializableMetadata x, SerializableMetadata y)
        {
            if (ReferenceEquals(x, y))
            {
                return 0;
            }

            if (ReferenceEquals(null, y))
            {
                return 1;
            }

            if (ReferenceEquals(null, x))
            {
                return -1;
            }

            return x.Version.CompareTo(y.Version);
        }
    }
}