Class TupleDecoder

python/ccxt/static_dependencies/ethereum/abi/decoding.py:153–183

class TupleDecoder(BaseDecoder):
    decoders = None

    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        self.decoders = tuple(
            HeadTailDecoder(tail_decoder=d) if getattr(d, "is_dynamic", False) else d
            for d in self.decoders
        )

        self.is_dynamic = any(getattr(d, "is_dynamic", False) for d in self.decoders)

    def validate(self):
        super().validate()

        if self.decoders is None:
            raise ValueError("No `decoders` set")

    @to_tuple
    def decode(self, stream):
        for decoder in self.decoders:
            yield decoder(stream)

    @parse_tuple_type_str
    def from_type_str(cls, abi_type, registry):
        decoders = tuple(
            registry.get_decoder(c.to_type_str()) for c in abi_type.components
        )

        return cls(decoders=decoders)


class SingleDecoder(BaseDecoder):