def __new__(cls, **kwargs): # Support *args?
result = super(PClass, cls).__new__(cls)
factory_fields = kwargs.pop('_factory_fields', None)
ignore_extra = kwargs.pop('ignore_extra', None)
missing_fields = []
invariant_errors = []
for name, field in cls._pclass_fields.items():
if name in kwargs:
if factory_fields is None or name in factory_fields:
if is_field_ignore_extra_complaint(PClass, field, ignore_extra):
value = field.factory(kwargs[name], ignore_extra=ignore_extra)
else:
value = field.factory(kwargs[name])
else:
value = kwargs[name]
_check_and_set_attr(cls, field, name, value, result, invariant_errors)
del kwargs[name]
elif field.initial is not PFIELD_NO_INITIAL:
initial = field.initial() if callable(field.initial) else field.initial
_check_and_set_attr(
cls, field, name, initial, result, invariant_errors)
elif field.mandatory:
missing_fields.append('{0}.{1}'.format(cls.__name__, name))
if invariant_errors or missing_fields:
raise InvariantException(tuple(invariant_errors), tuple(missing_fields), 'Field invariant failed')
if kwargs:
raise AttributeError("'{0}' are not among the specified fields for {1}".format(
', '.join(kwargs), cls.__name__))
check_global_invariants(result, cls._pclass_invariants)
result._pclass_frozen = True
return result
def set(self, key, original_value):
field = self._destination_cls._precord_fields.get(key)
if field:
if self._factory_fields is None or field in self._factory_fields:
try:
if is_field_ignore_extra_complaint(PRecord, field, self._ignore_extra):
value = field.factory(original_value, ignore_extra=self._ignore_extra)
else:
value = field.factory(original_value)
except InvariantException as e:
self._invariant_error_codes += e.invariant_errors
self._missing_fields += e.missing_fields
return self
else:
value = original_value
check_type(self._destination_cls, field, key, value)
is_ok, error_code = field.invariant(value)
if not is_ok:
self._invariant_error_codes.append(error_code)
return super(_PRecordEvolver, self).set(key, value)
else:
raise AttributeError("'{0}' is not among the specified fields for {1}".format(key, self._destination_cls.__name__))
def set(self, key, original_value):
field = self._destination_cls._precord_fields.get(key)
if field:
if self._factory_fields is None or field in self._factory_fields:
try:
if is_field_ignore_extra_complaint(PRecord, field, self._ignore_extra):
value = field.factory(original_value, ignore_extra=self._ignore_extra)
else:
value = field.factory(original_value)
except InvariantException as e:
self._invariant_error_codes += e.invariant_errors
self._missing_fields += e.missing_fields
return self
else:
value = original_value
check_type(self._destination_cls, field, key, value)
is_ok, error_code = field.invariant(value)
if not is_ok:
self._invariant_error_codes.append(error_code)
return super(_PRecordEvolver, self).set(key, value)
else:
raise AttributeError("'{0}' is not among the specified fields for {1}".format(key, self._destination_cls.__name__))
