AlwaysBState returns a dummy SymmDiffState that indicates all elements are from B, and have no common paths with A.

ChainConfig returns the appropriate ethereum chain config for the provided chain id.

CompactToHex converts a compact encoded path to hex format.

Fatalf formats a message to standard error and exits the program.

FromHex returns the bytes represented by the hexadecimal string s.

Hex2Bytes returns the bytes represented by the hexadecimal string str.

HexToCompact converts a hex path to the compact encoded format.

LoadConfig loads chain config from json file.

NewSymmetricDifferenceIterator constructs a trie.NodeIterator that iterates over the symmetric difference of elements in a and b, i.e., the elements in a that are not in b, and vice versa.

SymmDiffState exposes state specific to symmetric difference iteration, which is not accessible from the NodeIterator interface.