private static int ProcessListLessThan55Bytes(byte[] msgData, int level, int levelToIndex,
RLPCollection rlpCollection, int currentPosition)
{
var length = msgData[currentPosition] - OFFSET_SHORT_LIST;
var rlpDataLength = length + 1;
var rlpData = new byte[length + 1];
Array.Copy(msgData, currentPosition, rlpData, 0, rlpDataLength);
var newLevelCollection = new RLPCollection {
RLPData = rlpData
};
if (length > 0)
{
Decode(msgData, level + 1, currentPosition + 1, currentPosition + rlpDataLength,
levelToIndex,
newLevelCollection);
}
rlpCollection.Add(newLevelCollection);
currentPosition += rlpDataLength;
return(currentPosition);
}
private static int ProcessNullItem(RLPCollection rlpCollection, int currentPosition)
{
var item = EMPTY_BYTE_ARRAY;
var rlpItem = new RLPItem(item);
rlpCollection.Add(rlpItem);
currentPosition += 1;
return currentPosition;
}
private static int ProcessSingleByteItem(byte[] msgData, RLPCollection rlpCollection, int currentPosition)
{
byte[] item = { msgData[currentPosition] };
var rlpItem = new RLPItem(item);
rlpCollection.Add(rlpItem);
currentPosition += 1;
return currentPosition;
}
private static int ProcessItemLessThan55Bytes(byte[] msgData, RLPCollection rlpCollection, int currentPosition)
{
var length = (byte)(msgData[currentPosition] - OFFSET_SHORT_ITEM);
var item = new byte[length];
Array.Copy(msgData, currentPosition + 1, item, 0, length);
var rlpPrefix = new byte[2];
Array.Copy(msgData, currentPosition, rlpPrefix, 0, 2);
var rlpItem = new RLPItem(item);
rlpCollection.Add(rlpItem);
currentPosition += 1 + length;
return currentPosition;
}
private static int ProcessListBiggerThan55Bytes(byte[] msgData, int level, int levelToIndex,
RLPCollection rlpCollection, int currentPosition)
{
var lengthOfLength = (byte)(msgData[currentPosition] - OFFSET_LONG_LIST);
var length = CalculateLength(lengthOfLength, msgData, currentPosition);
var rlpDataLength = lengthOfLength + length + 1;
var rlpData = new byte[rlpDataLength];
Array.Copy(msgData, currentPosition, rlpData, 0, rlpDataLength);
var newLevelCollection = new RLPCollection { RLPData = rlpData };
Decode(msgData, level + 1, currentPosition + lengthOfLength + 1,
currentPosition + rlpDataLength, levelToIndex,
newLevelCollection);
rlpCollection.Add(newLevelCollection);
currentPosition += rlpDataLength;
return currentPosition;
}
private static int ProcessItemBiggerThan55Bytes(byte[] msgData, RLPCollection rlpCollection,
int currentPosition)
{
var lengthOfLength = (byte)(msgData[currentPosition] - OFFSET_LONG_ITEM);
var length = CalculateLength(lengthOfLength, msgData, currentPosition);
// now we can parse an item for data[1]..data[length]
var item = new byte[length];
Array.Copy(msgData, currentPosition + lengthOfLength + 1, item,
0, length);
var rlpPrefix = new byte[lengthOfLength + 1];
Array.Copy(msgData, currentPosition, rlpPrefix, 0,
lengthOfLength + 1);
var rlpItem = new RLPItem(item);
rlpCollection.Add(rlpItem);
currentPosition += lengthOfLength + length + 1;
return currentPosition;
}
