mypy.plugins.dataclasses.DataclassTransformer

Method	`__init__`	Undocumented
Method	`add_slots`	Undocumented
Method	`collect_attributes`	Collect all attributes declared in the dataclass and its parents.
Method	`reset_init_only_vars`	Remove init-only vars from the class and reset init var declarations.
Method	`transform`	Apply all the necessary transformations to the underlying dataclass so as to ensure it is fully type checked according to the rules in PEP 557.
Method	`_add_dataclass_fields_magic_attribute`	Undocumented
Method	`_freeze`	Converts all attributes to @property methods in order to emulate frozen classes.
Method	`_is_kw_only_type`	Checks if the type of the node is the KW_ONLY sentinel value.
Method	`_propertize_callables`	Converts all attributes with callable types to @property methods.
Instance Variable	`_ctx`	Undocumented

def __init__(self, ctx): (source)

Undocumented

Parameters
ctx:`ClassDefContext`	Undocumented

def add_slots(self, info, attributes, *, correct_version): (source)

Undocumented

Parameters
info:`TypeInfo`	Undocumented
attributes:`List[DataclassAttribute]`	Undocumented
correct_version:`bool`	Undocumented

def collect_attributes(self): (source)

Collect all attributes declared in the dataclass and its parents.

All assignments of the form

a: SomeType b: SomeOtherType = ...

are collected.

Returns
`Optional[List[DataclassAttribute]]`	Undocumented

def reset_init_only_vars(self, info, attributes): (source)

Remove init-only vars from the class and reset init var declarations.

Parameters
info:`TypeInfo`	Undocumented
attributes:`List[DataclassAttribute]`	Undocumented

def transform(self): (source)

Apply all the necessary transformations to the underlying dataclass so as to ensure it is fully type checked according to the rules in PEP 557.

def _add_dataclass_fields_magic_attribute(self): (source)

Undocumented

def _freeze(self, attributes): (source)

Converts all attributes to @property methods in order to emulate frozen classes.

Parameters
attributes:`List[DataclassAttribute]`	Undocumented

def _is_kw_only_type(self, node): (source)

Checks if the type of the node is the KW_ONLY sentinel value.

Parameters
node:`Optional[Type]`	Undocumented
Returns
`bool`	Undocumented

def _propertize_callables(self, attributes): (source)

Converts all attributes with callable types to @property methods.

This avoids the typechecker getting confused and thinking that my_dataclass_instance.callable_attr(foo) is going to receive a self argument (it is not).

Parameters
attributes:`List[DataclassAttribute]`	Undocumented

_ctx = (source)

Undocumented