dict

class DictFactory:
    """Dictionary factory types."""

    FILTER_NONE = filter_none

@dataclass
class DictEncoder:
    """Json serializer for data classes.

    Args:
        config: The serializer config instance
        context: The models context instance
        dict_factory: Dictionary factory
    """

    config: SerializerConfig = field(default_factory=SerializerConfig)
    context: XmlContext = field(default_factory=XmlContext)
    dict_factory: Callable = field(default=dict)

    def encode(
        self, value: Any, var: Optional[XmlVar] = None, wrapped: bool = False
    ) -> Any:
        """Convert a value to a dictionary object.

        Args:
            value: The input value
            var: The xml var instance

        Returns:
            The converted json serializable value.
        """

        if value is None:
            return None

        if var is None:
            if collections.is_array(value):
                return list(map(self.encode, value))

            return self.dict_factory(self.next_value(value))

        if var and var.wrapper and not wrapped:
            return self.dict_factory(((var.local_name, self.encode(value, var, True)),))

        if self.context.class_type.is_model(value):
            return self.dict_factory(self.next_value(value))

        if collections.is_array(value):
            return type(value)(self.encode(val, var, wrapped) for val in value)

        if isinstance(value, (dict, int, float, str, bool)):
            return value

        if isinstance(value, Enum):
            return self.encode(value.value, var, wrapped)

        return converter.serialize(value, format=var.format)

    def next_value(self, obj: Any) -> Iterator[Tuple[str, Any]]:
        """Fetch the next value of a model instance to convert.

        Args:
            obj: The input model instance

        Yields:
            An iterator of field name and value tuples.
        """
        ignore_optionals = self.config.ignore_default_attributes
        meta = self.context.build(obj.__class__, globalns=self.config.globalns)

        for var in meta.get_all_vars():
            value = getattr(obj, var.name)
            if (
                not var.is_attribute
                or not ignore_optionals
                or not var.is_optional(value)
            ):
                if var.wrapper:
                    yield var.wrapper, self.encode(value, var)
                else:
                    yield var.local_name, self.encode(value, var)