def read_config(self, fields: List[OptionInstance]) -> None:
pure = True
# get a scanner to read the yaml
with open(self.__filename, "r+t") as file:
options = load(file, Loader=Loader)
if len(fields) > 0:
for field in fields:
if options is not None and field.name in options:
# get the type
field.return_value(options[field.name])
else:
field.return_default()
pure = False
# check if there were any missing members
if not pure:
# write back to yaml
with open(self.__filename, "w+t") as file:
dumper = Dumper(stream=file)
try:
dumper.open()
mapping = {field.name: field.value for field in fields}
dumper.serialize(dumper.represent_mapping(None, mapping))
dumper.close()
finally:
dumper.dispose()
raise OptionsError(
'Config is missing some members! Fill them out and try again.')
