def as_str(self) -> str:
if len(self.data) % 2 != 0:
raise UTXOError(
'Length of seqNo-amount pairs must be even: items={}'.format(
len(self.data)))
return ':'.join(self.data)
def as_output_list(self) -> List[Output]:
if len(self.data) % 2 != 0:
raise UTXOError('Length of seqNo-amount pairs must be even: items={}'.format(len(self.data)))
rtn = []
for i in range(0, len(self.data), 2):
try:
seq_no = int(self.data[i])
amount = int(self.data[i + 1])
except ValueError:
raise UTXOError("Invalid data -- not integers -- seq_no:{} amount:{}".format(self.data[i],
self.data[i + 1]))
rtn.append(Output(self.address, seq_no, amount))
return rtn
def add_amount(self, seq_no: int, amount: int):
if not isinstance(seq_no, int) or not isinstance(amount, int):
raise UTXOError("Adding invalid types -- seqNo:{} amount:{}".format(seq_no, amount))
logger.debug('adding seq_no: address {} - seq_no: {} - amount: {}'.format(self.address, seq_no, amount))
self.data.append(str(seq_no))
self.data.append(str(amount))
def __init__(self, address: str, data=None):
self.address = address
if data:
if isinstance(data, (bytes, bytearray)):
data = data.decode()
if not isinstance(data, str):
raise UTXOError("Items are not valid string -- '{}'".format(str(data)))
split = data.split(self.DELIMITER)
if not len(split) % 2 == 0: # test if even
raise UTXOError("Stored seqNo-amount pairs is not even")
self.data = split
else:
self.data = []
def remove_seq_no(self, seq_no: int):
logger.debug(
'removing seq_no -- address:{} - seq_no: {} - data: {}'.format(
self.address, seq_no, str(self.data)))
seq_no_str = str(seq_no)
# Shortens the passed list `seq_nos_amounts` by 2 items
for i in range(0, len(self.data), 2):
if self.data[i] == seq_no_str:
break
else:
err_msg = "seq_no {} is not found is list of seq_nos_amounts for address -- current list: {}".format(
seq_no_str, self.data)
raise UTXONotFound(err_msg)
if i < len(self.data) and (i + 1) < len(self.data):
self.data.pop(i)
# List has changed length, value at index `i+1` has moved to index `i`
self.data.pop(i)
else:
raise UTXOError("Unable to remove seq_no from address")
def _is_valid_output(output: Output):
if not isinstance(output, Output):
raise UTXOError("Output is invalid object type")