示例#1
0
        /// <summary>
        /// This method is used to deserialize the Compact64bitInt basic object from the specified byte array and start index.
        /// </summary>
        /// <param name="byteArray">Specify the byte array.</param>
        /// <param name="startIndex">Specify the start index from the byte array.</param>
        /// <returns>Return the length in byte of the Compact64bitInt basic object.</returns>
        protected override int DoDeserializeFromByteArray(byte[] byteArray, int startIndex) // return the length consumed
        {
            using (BitReader bitReader = new BitReader(byteArray, startIndex))
            {
                int numberOfContinousZeroBit = 0;
                while (numberOfContinousZeroBit < 8 && bitReader.MoveNext())
                {
                    if (bitReader.Current == false)
                    {
                        numberOfContinousZeroBit++;
                    }
                    else
                    {
                        break;
                    }
                }

                switch (numberOfContinousZeroBit)
                {
                case 0:
                    this.DecodedValue = bitReader.ReadUInt64(7);
                    this.Type         = CompactUint7bitType;
                    return(1);

                case 1:
                    this.DecodedValue = bitReader.ReadUInt64(14);
                    this.Type         = CompactUint14bitType;
                    return(2);

                case 2:
                    this.DecodedValue = bitReader.ReadUInt64(21);
                    this.Type         = CompactUint21bitType;
                    return(3);

                case 3:
                    this.DecodedValue = bitReader.ReadUInt64(28);
                    this.Type         = CompactUint28bitType;
                    return(4);

                case 4:
                    this.DecodedValue = bitReader.ReadUInt64(35);
                    this.Type         = CompactUint35bitType;
                    return(5);

                case 5:
                    this.DecodedValue = bitReader.ReadUInt64(42);
                    this.Type         = CompactUint42bitType;
                    return(6);

                case 6:
                    this.DecodedValue = bitReader.ReadUInt64(49);
                    this.Type         = CompactUint49bitType;
                    return(7);

                case 7:
                    this.DecodedValue = bitReader.ReadUInt64(64);
                    this.Type         = CompactUint64bitType;
                    return(9);

                case 8:
                    this.DecodedValue = 0;
                    this.Type         = CompactUintNullType;
                    return(1);

                default:
                    throw new InvalidOperationException("Failed to parse the Compact64bitInt, the type value is unexpected");
                }
            }
        }