public byte[] RecalculateHash(ulong root)
{
var node = GetNodeById(root);
if (node is null)
{
return new byte[] {}
}
;
switch (node)
{
case InternalNode internalNode:
List <byte[]> childrenHashes = new List <byte[]>();
foreach (var child in internalNode.Children)
{
childrenHashes.Add(GetNodeById(child).Hash);
}
return(childrenHashes
.Zip(InternalNode.GetChildrenLabels(internalNode.ChildrenMask), (bytes, i) => new[] { i }.Concat(bytes))
.SelectMany(bytes => bytes)
.KeccakBytes());
case LeafNode leafNode:
return(leafNode.KeyHash.Length.ToBytes().Concat(leafNode.KeyHash).Concat(leafNode.Value).KeccakBytes());
}
return(new byte[] {});
}
