h256 hash256(u256Map const& _s)
{
// build patricia tree.
if (_s.empty())
return h256();
HexMap hexMap;
for (auto i = _s.rbegin(); i != _s.rend(); ++i)
hexMap[asNibbles(toBigEndianString(i->first))] = asString(rlp(i->second));
RLPStream s;
hash256rlp(hexMap, hexMap.cbegin(), hexMap.cend(), 0, s);
return sha3(s.out());
}
std::ostream& operator<<(std::ostream& _out, BlockChain const& _bc)
{
string cmp = toBigEndianString(_bc.m_lastBlockHash);
auto it = _bc.m_detailsDB->NewIterator(_bc.m_readOptions);
for (it->SeekToFirst(); it->Valid(); it->Next())
if (it->key().ToString() != "best")
{
BlockDetails d(RLP(it->value().ToString()));
_out << asHex(it->key().ToString()) << ": " << d.number << " @ " << d.parent << (cmp == it->key().ToString() ? " BEST" : "") << std::endl;
}
delete it;
return _out;
}
