Class CTxWitness

bitcoin/core/__init__.py:307–343

Witness data for all inputs to a transaction

            return cls(txinwitness.scriptWitness)

class CTxWitness(ImmutableSerializable):
    """Witness data for all inputs to a transaction"""
    __slots__ = ['vtxinwit']

    def __init__(self, vtxinwit=()):
        object.__setattr__(self, 'vtxinwit', vtxinwit)

    def is_null(self):
        for n in range(len(self.vtxinwit)):
            if not self.vtxinwit[n].is_null(): return False
        return True

    # FIXME this cannot be a @classmethod like the others because we need to
    # know how many items to deserialize, which comes from len(vin)
    def stream_deserialize(self, f):
        vtxinwit = tuple(CTxInWitness.stream_deserialize(f) for dummy in
                range(len(self.vtxinwit)))
        return CTxWitness(vtxinwit)

    def stream_serialize(self, f):
        for i in range(len(self.vtxinwit)):
            self.vtxinwit[i].stream_serialize(f)

    def __repr__(self):
        return "CTxWitness(%s)" % (','.join(repr(w) for w in self.vtxinwit))

    @classmethod
    def from_txwitness(cls, txwitness):
        """Create an immutable copy of an existing TxWitness

        If txwitness is already immutable (txwitness.__class__ is CTxWitness) it is returned
        directly.
        """
        if txwitness.__class__ is CTxWitness:
            return txwitness
        else:
            return cls(txwitness.vtxinwit)


class CTransaction(ImmutableSerializable):