private function readInt64(input:IDataInput) : Int64
                        {
                                    var b:uint = 0;
                                    var result:Int64 = new Int64();
                                    var i:uint = 0;
                                    while(true)
                                    {
                                                b = input.readUnsignedByte();
                                                if(i == 28)
                                                {
                                                            break;
                                                }
                                                if(b >= 128)
                                                {
                                                            result.low = result.low | (b & 127) << i;
                                                            i = i + 7;
                                                            continue;
                                                }
                                                result.low = result.low | b << i;
                                                return result;
                                    }
                                    if(b >= 128)
                                    {
                                                b = b & 127;
                                                result.low = result.low | b << i;
                                                result.high = b >>> 4;
                                                i = 3;
                                                while(true)
                                                {
                                                            b = input.readUnsignedByte();
                                                            if(i < 32)
                                                            {
                                                                        if(b >= 128)
                                                                        {
                                                                                    result.high = result.high | (b & 127) << i;
                                                                        }
                                                                        else
                                                                        {
                                                                                    break;
                                                                        }
                                                            }
                                                            i = i + 7;
                                                }
                                                result.high = result.high | b << i;
                                                return result;
                                    }
                                    result.low = result.low | b << i;
                                    result.high = b >>> 4;
                                    return result;
                        }