def advance_txs(self, txs, eventlog_dict):
self.tx_hashes.append(b''.join(tx_hash for tx, tx_hash in txs))
# Use local vars for speed in the loops
undo_info = []
history = self.history
history_size = self.history_size
tx_num = self.tx_count
script_hashX = self.coin.hashX_from_script
s_pack = pack
put_utxo = self.utxo_cache.__setitem__
spend_utxo = self.spend_utxo
undo_info_append = undo_info.append
touched = self.touched
eventlogs = self.eventlogs
eventlog_touched = self.eventlog_touched
eventlogs_size = self.eventlogs_size
for tx, tx_hash in txs:
hashXs = set()
add_hashX = hashXs.add
tx_numb = s_pack('<I', tx_num)
# eventlog
datas = eventlog_dict.get(hash_to_hex_str(tx_hash), [])
for data in datas:
hashY, log_index = data
eventlogs[hashY].append(array.array('I', [tx_num, log_index]))
eventlog_touched.add(hashY)
eventlogs_size += len(datas)
# Spend the inputs
if not tx.is_coinbase:
for txin in tx.inputs:
cache_value = spend_utxo(txin.prev_hash, txin.prev_idx)
undo_info_append(cache_value)
add_hashX(cache_value[:-12])
# Add the new UTXOs
for idx, txout in enumerate(tx.outputs):
# Get the hashX. Ignore unspendable outputs
hashX = script_hashX(txout.pk_script)
if hashX:
add_hashX(hashX)
put_utxo(tx_hash + s_pack('<H', idx),
hashX + tx_numb + s_pack('<Q', txout.value))
for hashX in hashXs:
history[hashX].append(tx_num)
history_size += len(hashXs)
touched.update(hashXs)
tx_num += 1
self.tx_count = tx_num
self.tx_counts.append(tx_num)
self.history_size = history_size
self.eventlogs_size = eventlogs_size
return undo_info
def test_hash_to_hex_str():
assert lib_hash.hash_to_hex_str(b'hash_to_str') == '7274735f6f745f68736168'