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 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;
}