def _build_value(type_: Type, data: Any, config: Config) -> Any:
if is_union(type_):
return _build_value_for_union(union=type_, data=data, config=config)
elif is_generic_collection(type_) and is_instance(data, extract_origin_collection(type_)):
return _build_value_for_collection(collection=type_, data=data, config=config)
elif is_dataclass(type_) and is_instance(data, Data):
return from_dict(data_class=type_, data=data, config=config)
return data
def _build_value_for_collection(collection: Type, data: Any,
config: Config) -> Any:
collection_cls = extract_origin_collection(collection)
if is_instance(data, Mapping):
return collection_cls(
(key,
_build_value(type_=extract_generic(collection)[1],
data=value,
config=config)) for key, value in data.items())
return collection_cls(
_build_value(
type_=extract_generic(collection)[0], data=item, config=config)
for item in data)
def _build_value_for_collection(collection: Type, data: Any,
config: Config) -> Any:
generic = extract_generic(collection)
if is_instance(data, Mapping):
return data.__class__(
(key, _build_value(type_=generic[1], data=value, config=config))
for key, value in data.items())
collection_type = extract_origin_collection(collection)
if collection_type == tuple and not (len(generic) == 2
and generic[1] == Ellipsis):
return data.__class__(
_build_value(type_=item_type, data=item, config=config)
for item, item_type in zip(data, generic))
return data.__class__(
_build_value(type_=generic[0], data=item, config=config)
for item in data)
def test_extract_generic_collection():
assert extract_origin_collection(List[int]) == list
