public static IHashTrieNode FromBytes(ReadOnlyMemory <byte> bytes)
{
if (bytes.Length < 1)
{
throw new ArgumentException("Empty bytes to deserialize");
}
var type = bytes.Span[0];
switch (type)
{
case 0:
if (bytes.Length < 1 + 4 + 32)
{
throw new ArgumentException($"Not enough bytes to deserialize: {bytes.Length}");
}
var mask = bytes.Slice(1, 4).Span.ToUInt32();
var len = (int)BitsUtils.Popcount(mask);
var hash = bytes.Slice(1 + 4, 32).ToArray();
ulong[] _children = new ulong[len];
var pos = 32 + 5;
for (var i = 0; i < len; i++)
{
if (pos >= bytes.Length)
{
throw new ArgumentException("does not hold all the childen");
}
byte sz = bytes.Span[pos];
if (pos + sz >= bytes.Length)
{
throw new ArgumentException("not enough bytes to deserialize the children id");
}
ulong m = 1;
ulong res = 0;
for (int j = pos + 1; j <= pos + sz; j++)
{
res = res + m * bytes.Span[j];
m = m * 256;
}
_children[i] = res;
pos += sz + 1;
}
return(new InternalNode(mask, _children, hash));
case 1:
if (bytes.Length < 1 + 32)
{
throw new ArgumentException($"Not enough bytes to deserialize: {bytes.Length}");
}
return(new LeafNode(bytes.Slice(1, 32).ToArray(), bytes.Slice(1 + 32).ToArray()));
default:
throw new InvalidOperationException($"Type id {type} is not supported");
}
}
public bool Parity()
{
var p = RawBytes.Aggregate(0u, (i, b) => i ^ b, x => x);
return(BitsUtils.Popcount(p) % 2 == 1);
}
public bool Parity()
{
var p = _signature.ToBytes().Aggregate(0u, (i, b) => i ^ b, x => x);
return(BitsUtils.Popcount(p) % 2 == 1);
}
