Class FieldListField

scapy/fields.py:2084–2175

class FieldListField(Field[List[Any], List[Any]]):
    __slots__ = ["field", "count_from", "length_from", "max_count"]
    islist = 1

    def __init__(
            self,
            name,  # type: str
            default,  # type: Optional[List[AnyField]]
            field,  # type: AnyField
            length_from=None,  # type: Optional[Callable[[Packet], int]]
            count_from=None,  # type: Optional[Callable[[Packet], int]]
            max_count=None,  # type: Optional[int]
    ):
        # type: (...) -> None
        if default is None:
            default = []  # Create a new list for each instance
        self.field = field
        Field.__init__(self, name, default)
        self.count_from = count_from
        self.length_from = length_from
        self.max_count = max_count

    def i2count(self, pkt, val):
        # type: (Optional[Packet], List[Any]) -> int
        if isinstance(val, list):
            return len(val)
        return 1

    def i2len(self, pkt, val):
        # type: (Packet, List[Any]) -> int
        return int(sum(self.field.i2len(pkt, v) for v in val))

    def any2i(self, pkt, x):
        # type: (Optional[Packet], List[Any]) -> List[Any]
        if not isinstance(x, list):
            return [self.field.any2i(pkt, x)]
        else:
            return [self.field.any2i(pkt, e) for e in x]

    def i2repr(self,
               pkt,  # type: Optional[Packet]
               x,  # type: List[Any]
               ):
        # type: (...) -> str
        return "[%s]" % ", ".join(self.field.i2repr(pkt, v) for v in x)

    def addfield(self,
                 pkt,  # type: Packet
                 s,  # type: bytes
                 val,  # type: Optional[List[Any]]
                 ):
        # type: (...) -> bytes
        val = self.i2m(pkt, val)
        for v in val:
            s = self.field.addfield(pkt, s, v)
        return s

    def getfield(self,