private object ReadCollection()

in csharp/Adapter/Microsoft.Spark.CSharp/Interop/Ipc/JvmBridge.cs [212:276]
64 lines of code
13 McCabe index (conditional complexity)

        private object ReadCollection(Stream s)
        {
            object returnValue;
            var listItemTypeAsChar = Convert.ToChar(s.ReadByte());
            int numOfItemsInList = SerDe.ReadInt(s);
            switch (listItemTypeAsChar)
            {
                case 'c':
                    var strList = new List<string>();
                    for (int itemIndex = 0; itemIndex < numOfItemsInList; itemIndex++)
                    {
                        strList.Add(SerDe.ReadString(s));
                    }
                    returnValue = strList;
                    break;
                case 'i':
                    var intList = new List<int>();
                    for (int itemIndex = 0; itemIndex < numOfItemsInList; itemIndex++)
                    {
                        intList.Add(SerDe.ReadInt(s));
                    }
                    returnValue = intList;
                    break;
                case 'd':
                    var doubleList = new List<double>();
                    for (int itemIndex = 0; itemIndex < numOfItemsInList; itemIndex++)
                    {
                        doubleList.Add(SerDe.ReadDouble(s));
                    }
                    returnValue = doubleList;
                    break;
                case 'b':
                    var boolList = new List<bool>();
                    for (int itemIndex = 0; itemIndex < numOfItemsInList; itemIndex++)
                    {
                        boolList.Add(Convert.ToBoolean(s.ReadByte()));
                    }
                    returnValue = boolList;
                    break;
                case 'r':
                    var byteArrayList = new List<byte[]>();
                    for (int itemIndex = 0; itemIndex < numOfItemsInList; itemIndex++)
                    {
                        var byteArrayLen = SerDe.ReadInt(s);
                        byteArrayList.Add(SerDe.ReadBytes(s, byteArrayLen));
                    }
                    returnValue = byteArrayList;
                    break;
                case 'j':
                    var jvmObjectReferenceList = new List<JvmObjectReference>();
                    for (int itemIndex = 0; itemIndex < numOfItemsInList; itemIndex++)
                    {
                        var itemIdentifier = SerDe.ReadString(s);
                        jvmObjectReferenceList.Add(new JvmObjectReference(itemIdentifier));
                    }
                    returnValue = jvmObjectReferenceList;
                    break;
                default:
                    // convert listItemTypeAsChar to UInt32 because the char may be non-printable
                    throw new NotSupportedException(
                        string.Format("Identifier for list item type 0x{0:X} not supported",
                            Convert.ToUInt32(listItemTypeAsChar)));
            }
            return returnValue;
        }