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 load_from_template(template, cfg_value):
if isinstance(cfg_value, dict):
cfg_obj = SimpleNamespace()
for key, value in cfg_value.items():
nest_template = getattr(template, key, None)
if nest_template is not None:
# it is a nested class which means subsection of config
result = load_from_template(nest_template, value)
setattr(cfg_obj, key, result)
else:
# it should be either raw type or a Union
anno = template.__annotations__[key]
if typing_utils.is_union(anno):
nest_templates = typing_utils.extract_generic(anno)
result = load_from_matching_template(
nest_templates, value)
setattr(cfg_obj, key, result)
else:
setattr(cfg_obj, key, value)
return cfg_obj
elif isinstance(cfg_value, list):
if typing_utils.is_generic_collection(template):
item_template = typing_utils.extract_generic(template)[0]
if typing_utils.is_union(item_template):
item_templates = typing_utils.extract_generic(
item_template)
else:
item_templates = [item_template]
return [
load_from_matching_template(item_templates, item)
for item in cfg_value
]
else:
return cfg_value
else:
return cfg_value
def test_is_generic_collection_with_non_generic_collection():
assert not is_generic_collection(list)
def test_is_generic_collection_with_generic_collection():
assert is_generic_collection(List[int])
def test_is_generic_collection_with_union():
assert not is_generic_collection(Union[int, str])
