treex.FieldMetadata

Source code in treeo/types.py

class FieldMetadata:
    node: bool
    kind: type
    opaque: tp.Union[bool, tp.Callable[[utils.Opaque, tp.Any], bool]]

    def __init__(
        self,
        node: bool,
        kind: type,
        opaque: tp.Union[bool, tp.Callable[[utils.Opaque, tp.Any], bool]],
    ):
        self.__dict__["node"] = node
        self.__dict__["kind"] = kind
        self.__dict__["opaque"] = opaque

    def update(self, **kwargs) -> "FieldMetadata":
        fields = vars(self).copy()
        fields.update(kwargs)
        return FieldMetadata(**fields)

    def __setattr__(self, name: str, value: tp.Any) -> None:
        raise AttributeError(f"FieldMetadata is immutable, cannot set {name}")