Lucene.Net.Support.Character.CodePointAtImpl C# (CSharp) Метод

        static int CodePointAtImpl(char[] a, int index, int limit)
        {
            char c1 = a[index++];
            if (char.IsHighSurrogate(c1))
            {
                if (index < limit)
                {
                    char c2 = a[index];
                    if (char.IsLowSurrogate(c2))
                    {
                        return ToCodePoint(c1, c2);
                    }
                }
            }
            return c1;
        }