private object YieldJToken(Type ctype, JToken jt, int rank)
        {
            if (rank == 0)
            {
                if (ctype == typeof_BitArray)
                {
                    return(Executer.Parse1010(jt.ToString()));
                }

                if (ctype == typeof_NpgsqlPoint)
                {
                    return(NpgsqlPoint.Parse(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlLine)
                {
                    return(NpgsqlLine.Parse(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlLSeg)
                {
                    return(NpgsqlLSeg.Parse(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlBox)
                {
                    return(NpgsqlBox.Parse(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlPath)
                {
                    return(NpgsqlPath.Parse(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlPolygon)
                {
                    return(NpgsqlPolygon.Parse(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlCircle)
                {
                    return(NpgsqlCircle.Parse(jt.ToString()));
                }

                if (ctype == typeof_NpgsqlInet)
                {
                    return(new NpgsqlInet(jt.ToString()));
                }
                if (ctype == typeof_IPAddress)
                {
                    return(new NpgsqlInet(jt.ToString()));
                }
                if (ctype == typeof_PhysicalAddress)
                {
                    return(PhysicalAddress.Parse(jt.ToString()));
                }

                if (ctype == typeof_NpgsqlRange_int)
                {
                    return(Executer.ParseNpgsqlRange <int>(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlRange_long)
                {
                    return(Executer.ParseNpgsqlRange <long>(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlRange_decimal)
                {
                    return(Executer.ParseNpgsqlRange <decimal>(jt.ToString()));
                }
                if (ctype == typeof_NpgsqlRange_DateTime)
                {
                    return(Executer.ParseNpgsqlRange <DateTime>(jt.ToString()));
                }

                return(null);
            }
            return(jt.Select <JToken, object>(a => YieldJToken(ctype, a, rank - 1)));
        }