def initialize(state, block=None):
config = state.config
state.txindex = 0
state.gas_used = 0
state.bloom = 0
state.receipts = []
if block != None:
update_block_env_variables(state, block)
if state.is_DAO(at_fork_height=True):
for acct in state.config['CHILD_DAO_LIST']:
state.transfer_value(acct, state.config['DAO_WITHDRAWER'],
state.get_balance(acct))
def mk_poststate_of_blockhash(self, blockhash, convert=False):
if blockhash not in self.db:
raise Exception("Block hash %s not found" % encode_hex(blockhash))
block_rlp = self.db.get(blockhash)
if block_rlp == b'GENESIS':
return State.from_snapshot(
json.loads(self.db.get(b'GENESIS_STATE')), self.env)
block = rlp.decode(block_rlp, Block)
state = State(env=self.env)
state.trie.root_hash = block.header.state_root if convert else self.db.get(
b'state:' + blockhash)
update_block_env_variables(state, block)
state.gas_used = block.header.gas_used
state.txindex = len(block.transactions)
state.recent_uncles = {}
state.prev_headers = []
b = block
header_depth = state.config['PREV_HEADER_DEPTH']
for i in range(header_depth + 1):
state.prev_headers.append(b.header)
if i < 6:
state.recent_uncles[state.block_number - i] = []
for u in b.uncles:
state.recent_uncles[state.block_number - i].append(u.hash)
try:
b = rlp.decode(state.db.get(b.header.prevhash), Block)
except:
break
if i < header_depth:
if state.db.get(b.header.prevhash) == b'GENESIS':
jsondata = json.loads(state.db.get(b'GENESIS_STATE'))
for h in jsondata["prev_headers"][:header_depth - i]:
state.prev_headers.append(dict_to_prev_header(h))
for blknum, uncles in jsondata["recent_uncles"].items():
if int(blknum) >= state.block_number - int(
state.config['MAX_UNCLE_DEPTH']):
state.recent_uncles[blknum] = [
parse_as_bin(u) for u in uncles
]
else:
raise Exception("Dangling prevhash")
assert len(state.journal) == 0, state.journal
return state
def initialize(state, block=None):
config = state.config
state.txindex = 0
state.gas_used = 0
state.bloom = 0
state.receipts = []
if block is not None:
update_block_env_variables(state, block)
# Initalize the next epoch in the Casper contract
if state.block_number % state.config[
'EPOCH_LENGTH'] == 0 and state.block_number != 0:
key, account = state.config['NULL_SENDER'], privtoaddr(
state.config['NULL_SENDER'])
data = casper_utils.casper_translator.encode(
'initialize_epoch',
[state.block_number // state.config['EPOCH_LENGTH']])
transaction = transactions.Transaction(state.get_nonce(account), 0,
3141592,
state.config['CASPER_ADDRESS'],
0, data).sign(key)
success, output = apply_transaction(state, transaction)
assert success
if state.is_DAO(at_fork_height=True):
for acct in state.config['CHILD_DAO_LIST']:
state.transfer_value(acct, state.config['DAO_WITHDRAWER'],
state.get_balance(acct))
if state.is_METROPOLIS(at_fork_height=True):
state.set_code(
utils.normalize_address(config["METROPOLIS_STATEROOT_STORE"]),
config["METROPOLIS_GETTER_CODE"])
state.set_code(
utils.normalize_address(config["METROPOLIS_BLOCKHASH_STORE"]),
config["METROPOLIS_GETTER_CODE"])