mirror of
https://github.com/davidhalter/django-stubs.git
synced 2025-12-08 21:14:49 +08:00
more fixes for django stubs, first attempt for a plugin
This commit is contained in:
Maxim Kurnikov
@@ -1,5 +1,6 @@
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from typing import Callable, Optional, Type
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from django.contrib.sessions.backends.base import SessionBase
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from django.core.handlers.wsgi import WSGIRequest
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from django.http.request import HttpRequest
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from django.http.response import HttpResponseBase
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@@ -8,7 +9,7 @@ from django.utils.deprecation import MiddlewareMixin
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class SessionMiddleware(MiddlewareMixin):
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get_response: Callable[[WSGIRequest], HttpResponseBase] = ...
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SessionStore: Type[SessionStore] = ...
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SessionStore: Type[SessionBase] = ...
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def __init__(self, get_response: Optional[Callable] = ...) -> None: ...
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15
django-stubs/core/cache/__init__.pyi
vendored
15
django-stubs/core/cache/__init__.pyi
vendored
@@ -1,25 +1,32 @@
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from collections import OrderedDict
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from typing import Any, Callable, Dict, Optional, Union
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from typing import Any, Callable, Dict, Union
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from django.core.cache.backends.base import BaseCache as BaseCache
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from django.core.cache.backends.base import CacheKeyWarning as CacheKeyWarning
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from django.core.cache.backends.base import \
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InvalidCacheBackendError as InvalidCacheBackendError
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DEFAULT_CACHE_ALIAS: str
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class CacheHandler:
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def __init__(self) -> None: ...
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def __getitem__(self, alias: str) -> BaseCache: ...
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def all(self): ...
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class DefaultCacheProxy:
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def __getattr__(
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self, name: str
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) -> Union[Callable, Dict[str, float], OrderedDict, int]: ...
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def __setattr__(self, name: str, value: Callable) -> None: ...
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def __delattr__(self, name: Any): ...
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def __contains__(self, key: str) -> bool: ...
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def __eq__(self, other: Any): ...
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cache: Any
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caches: CacheHandler
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@@ -1,3 +1,4 @@
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from io import BufferedReader, StringIO
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from typing import Any, Iterator, Optional, Union
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from django.core.files.utils import FileProxyMixin
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@@ -5,7 +6,7 @@ from django.core.files.utils import FileProxyMixin
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class File(FileProxyMixin):
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DEFAULT_CHUNK_SIZE: Any = ...
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file: _io.BufferedReader = ...
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file: BufferedReader = ...
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name: str = ...
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mode: str = ...
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def __init__(self, file: Any, name: Optional[str] = ...) -> None: ...
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@@ -14,7 +15,7 @@ class File(FileProxyMixin):
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def size(self) -> int: ...
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def chunks(
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self, chunk_size: Optional[int] = ...
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) -> Iterator[Union[bytes, str]]: ...
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) -> Iterator[Union[bytes, bytearray]]: ...
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def multiple_chunks(self, chunk_size: Optional[Any] = ...): ...
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def __iter__(self) -> Iterator[Union[bytes, str]]: ...
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def __enter__(self) -> File: ...
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@@ -23,7 +24,7 @@ class File(FileProxyMixin):
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def close(self) -> None: ...
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class ContentFile(File):
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file: _io.StringIO
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file: StringIO
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name: None
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size: Any = ...
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def __init__(
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@@ -1,76 +1,110 @@
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from typing import Any, Callable, List, Optional, Tuple, Type, Union
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from typing import Any, Callable, List, Optional, Tuple, Type, Union, Generic, TypeVar
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from django.core.exceptions import ObjectDoesNotExist
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from django.db.models.base import Model
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from django.db.models.expressions import F
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from django.db.models.fields.mixins import FieldCacheMixin
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from django.db.models.fields.related import ForeignObject
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from django.db.models.fields.related import ForeignObject, RelatedField, OneToOneField
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from django.db.models.fields.reverse_related import ManyToManyRel, OneToOneRel
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from django.db.models.query import QuerySet
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_T = TypeVar('_T')
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class ForwardManyToOneDescriptor:
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RelatedObjectDoesNotExist: Type[django.core.exceptions.ObjectDoesNotExist]
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field: django.db.models.fields.related.ForeignObject = ...
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RelatedObjectDoesNotExist: Type[ObjectDoesNotExist]
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field: ForeignObject = ...
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def __init__(self, field_with_rel: ForeignObject) -> None: ...
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def RelatedObjectDoesNotExist(self) -> Type[ObjectDoesNotExist]: ...
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def is_cached(self, instance: Model) -> bool: ...
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def get_queryset(self, **hints: Any) -> QuerySet: ...
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def get_prefetch_queryset(
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self, instances: List[Model], queryset: Optional[QuerySet] = ...
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) -> Tuple[QuerySet, Callable, Callable, bool, str, bool]: ...
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def get_object(self, instance: Model) -> Model: ...
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def __get__(
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self, instance: Optional[Model], cls: Type[Model] = ...
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) -> Optional[Union[Model, ForwardManyToOneDescriptor]]: ...
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def __set__(
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self, instance: Model, value: Optional[Union[Model, F]]
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) -> None: ...
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def __reduce__(self) -> Tuple[Callable, Tuple[Type[Model], str]]: ...
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class ForwardOneToOneDescriptor(ForwardManyToOneDescriptor):
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RelatedObjectDoesNotExist: Type[django.core.exceptions.ObjectDoesNotExist]
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field: django.db.models.fields.related.OneToOneField
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RelatedObjectDoesNotExist: Type[ObjectDoesNotExist]
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field: OneToOneField
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def get_object(self, instance: Model) -> Model: ...
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def __set__(self, instance: Model, value: Optional[Model]) -> None: ...
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class ReverseOneToOneDescriptor:
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RelatedObjectDoesNotExist: Type[django.core.exceptions.ObjectDoesNotExist]
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related: django.db.models.fields.reverse_related.OneToOneRel = ...
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RelatedObjectDoesNotExist: Type[ObjectDoesNotExist]
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related: OneToOneRel = ...
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def __init__(self, related: OneToOneRel) -> None: ...
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def RelatedObjectDoesNotExist(self) -> Type[ObjectDoesNotExist]: ...
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def is_cached(self, instance: Model) -> bool: ...
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def get_queryset(self, **hints: Any) -> QuerySet: ...
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def get_prefetch_queryset(
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self, instances: List[Model], queryset: Optional[QuerySet] = ...
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) -> Tuple[QuerySet, Callable, Callable, bool, str, bool]: ...
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def __get__(
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self, instance: Optional[Model], cls: Type[Model] = ...
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) -> Union[Model, ReverseOneToOneDescriptor]: ...
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def __set__(self, instance: Model, value: Optional[Model]) -> None: ...
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def __reduce__(self) -> Tuple[Callable, Tuple[Type[Model], str]]: ...
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class ReverseManyToOneDescriptor:
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rel: django.db.models.fields.mixins.FieldCacheMixin = ...
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field: django.db.models.fields.mixins.FieldCacheMixin = ...
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rel: FieldCacheMixin = ...
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field: FieldCacheMixin = ...
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def __init__(self, rel: FieldCacheMixin) -> None: ...
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def related_manager_cls(self): ...
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def __get__(
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self, instance: Optional[Model], cls: Type[Model] = ...
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) -> ReverseManyToOneDescriptor: ...
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def __set__(self, instance: Model, value: List[Model]) -> Any: ...
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def create_reverse_many_to_one_manager(superclass: Any, rel: Any): ...
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class ManyToManyDescriptor(ReverseManyToOneDescriptor):
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field: django.db.models.fields.related.RelatedField
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rel: django.db.models.fields.reverse_related.ManyToManyRel
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field: RelatedField
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rel: ManyToManyRel
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reverse: bool = ...
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def __init__(self, rel: ManyToManyRel, reverse: bool = ...) -> None: ...
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@property
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def through(self) -> Type[Model]: ...
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def related_manager_cls(self): ...
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class _ForwardManyToManyManager(Generic[_T]):
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def all(self) -> QuerySet: ...
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def create_forward_many_to_many_manager(
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superclass: Any, rel: Any, reverse: Any
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): ...
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) -> _ForwardManyToManyManager: ...
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@@ -138,12 +138,7 @@ class QuerySet(Generic[_T]):
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def get(
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self, *args: Any, **kwargs: Any
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) -> Union[
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Dict[str, Union[date, Decimal, float, str]],
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Tuple[Union[Decimal, str]],
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Model,
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str,
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]: ...
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) -> _T: ...
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def create(self, **kwargs: Any) -> _T: ...
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@@ -1,5 +1,6 @@
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from typing import Any, Callable, Optional, Union
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from django.core.cache import BaseCache
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from django.http.request import HttpRequest
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from django.http.response import HttpResponse, HttpResponseBase
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from django.utils.deprecation import MiddlewareMixin
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@@ -9,29 +10,36 @@ class UpdateCacheMiddleware(MiddlewareMixin):
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cache_timeout: float = ...
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key_prefix: str = ...
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cache_alias: str = ...
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cache: django.core.cache.backends.base.BaseCache = ...
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cache: BaseCache = ...
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get_response: Optional[Callable] = ...
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def __init__(self, get_response: Optional[Callable] = ...) -> None: ...
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def process_response(
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self, request: HttpRequest, response: Union[HttpResponseBase, str]
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) -> Union[HttpResponseBase, str]: ...
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class FetchFromCacheMiddleware(MiddlewareMixin):
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key_prefix: str = ...
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cache_alias: str = ...
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cache: django.core.cache.backends.base.BaseCache = ...
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cache: BaseCache = ...
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get_response: Optional[Callable] = ...
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def __init__(self, get_response: Optional[Callable] = ...) -> None: ...
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def process_request(
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self, request: HttpRequest
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) -> Optional[HttpResponse]: ...
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class CacheMiddleware(UpdateCacheMiddleware, FetchFromCacheMiddleware):
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get_response: None = ...
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key_prefix: str = ...
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cache_alias: str = ...
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cache_timeout: float = ...
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cache: django.core.cache.backends.locmem.LocMemCache = ...
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cache: BaseCache = ...
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def __init__(
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self,
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get_response: None = ...,
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@@ -3,3 +3,7 @@ from .testcases import (
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TransactionTestCase as TransactionTestCase,
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SimpleTestCase as SimpleTestCase
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)
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from .utils import (
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override_settings as override_settings
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)
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@@ -16,7 +16,8 @@ def lookup_django_model(mypy_api: TypeChecker, fullname: str) -> SymbolTableNode
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try:
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return mypy_api.modules[module].names[model_name]
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except KeyError:
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return mypy_api.modules['django.db.models'].names['Model']
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return mypy_api.lookup_qualified('typing.Any')
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# return mypy_api.modules['typing'].names['Any']
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def get_app_model(model_name: str) -> str:
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@@ -1,77 +0,0 @@
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from typing import Callable, Optional
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from mypy.nodes import AssignmentStmt, CallExpr, RefExpr, StrExpr
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from mypy.plugin import Plugin, ClassDefContext
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from mypy_django_plugin.helpers import get_app_model
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from mypy_django_plugin.model_classes import DjangoModelsRegistry
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# fields which real type is inside to= expression
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REFERENCING_DB_FIELDS = {
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'django.db.models.fields.related.ForeignKey',
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'django.db.models.fields.related.OneToOneField'
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}
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def save_referred_to_model_in_metadata(rvalue: CallExpr) -> None:
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to_arg_value = rvalue.args[rvalue.arg_names.index('to')]
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if isinstance(to_arg_value, StrExpr):
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referred_model_fullname = get_app_model(to_arg_value.value)
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else:
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referred_model_fullname = to_arg_value.fullname
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rvalue.callee.node.metadata['base'] = referred_model_fullname
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class CollectModelsInformation(object):
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def __init__(self, model_registry: DjangoModelsRegistry):
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self.model_registry = model_registry
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def __call__(self, model_definition: ClassDefContext) -> None:
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self.model_registry.base_models.add(model_definition.cls.fullname)
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for member in model_definition.cls.defs.body:
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if isinstance(member, AssignmentStmt):
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if len(member.lvalues) > 1:
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return None
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arg_name = member.lvalues[0].name
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arg_name_as_id = arg_name + '_id'
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rvalue = member.rvalue
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if isinstance(rvalue, CallExpr):
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if not isinstance(rvalue.callee, RefExpr):
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return None
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if rvalue.callee.fullname in REFERENCING_DB_FIELDS:
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if rvalue.callee.fullname == 'django.db.models.fields.related.ForeignKey':
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model_definition.cls.info.names[arg_name_as_id] = \
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model_definition.api.lookup_fully_qualified('builtins.int')
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if rvalue.callee.fullname == 'django.db.models.fields.related.OneToOneField':
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if 'related_name' in rvalue.arg_names:
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referred_to_model = rvalue.args[rvalue.arg_names.index('to')]
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related_arg_value = rvalue.args[rvalue.arg_names.index('related_name')].value
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if isinstance(referred_to_model, StrExpr):
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referred_model_fullname = get_app_model(referred_to_model.value)
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else:
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referred_model_fullname = referred_to_model.fullname
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referred_model = model_definition.api.lookup_fully_qualified_or_none(referred_model_fullname)
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referred_model.node.names[related_arg_value] = \
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model_definition.api.lookup_fully_qualified_or_none(model_definition.cls.fullname)
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return save_referred_to_model_in_metadata(rvalue)
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class BaseDjangoModelsPlugin(Plugin):
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model_registry = DjangoModelsRegistry()
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def get_base_class_hook(self, fullname: str
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) -> Optional[Callable[[ClassDefContext], None]]:
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if fullname in self.model_registry:
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return CollectModelsInformation(self.model_registry)
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return None
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164
mypy_django_plugin/plugins/callbacks.py
Normal file
164
mypy_django_plugin/plugins/callbacks.py
Normal file
@@ -0,0 +1,164 @@
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import dataclasses
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from mypy import types, nodes
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from mypy.nodes import CallExpr, StrExpr, AssignmentStmt, RefExpr
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from mypy.plugin import AttributeContext, ClassDefContext, SemanticAnalyzerPluginInterface
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from mypy.types import Type, Instance, AnyType, TypeOfAny
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from mypy_django_plugin.helpers import lookup_django_model, get_app_model
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from mypy_django_plugin.model_classes import DjangoModelsRegistry
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# mapping between field types and plain python types
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DB_FIELDS_TO_TYPES = {
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'django.db.models.fields.CharField': 'builtins.str',
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'django.db.models.fields.TextField': 'builtins.str',
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'django.db.models.fields.BooleanField': 'builtins.bool',
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# 'django.db.models.fields.NullBooleanField': 'typing.Optional[builtins.bool]',
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'django.db.models.fields.IntegerField': 'builtins.int',
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'django.db.models.fields.AutoField': 'builtins.int',
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'django.db.models.fields.FloatField': 'builtins.float',
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'django.contrib.postgres.fields.jsonb.JSONField': 'builtins.dict',
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'django.contrib.postgres.fields.array.ArrayField': 'typing.Iterable'
|
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}
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|
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# def get_queryset_of(type_fullname: str):
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# return model_definition.api.lookup_fully_qualified_or_none('django.db.models.QuerySet')
|
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|
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|
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@dataclasses.dataclass
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class DjangoPluginApi(object):
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mypy_api: SemanticAnalyzerPluginInterface
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|
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def get_queryset_of(self, type_fullname: str = 'django.db.models.base.Model') -> types.Type:
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queryset_sym = self.mypy_api.lookup_fully_qualified_or_none('django.db.models.QuerySet')
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if not queryset_sym:
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return AnyType(TypeOfAny.from_error)
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|
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generic_arg = self.mypy_api.lookup_fully_qualified_or_none(type_fullname)
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if not generic_arg:
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return Instance(queryset_sym.node, [AnyType(TypeOfAny.from_error)])
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return Instance(queryset_sym.node, [Instance(generic_arg.node, [])])
|
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|
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def generate_related_manager_assignment_stmt(self,
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related_mngr_name: str,
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queryset_argument_type_fullname: str) -> nodes.AssignmentStmt:
|
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rvalue = nodes.TempNode(AnyType(TypeOfAny.special_form))
|
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assignment = nodes.AssignmentStmt(lvalues=[nodes.NameExpr(related_mngr_name)],
|
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rvalue=rvalue,
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new_syntax=True,
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type=self.get_queryset_of(queryset_argument_type_fullname))
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return assignment
|
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|
||||
|
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class DetermineFieldPythonTypeCallback(object):
|
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def __init__(self, models_registry: DjangoModelsRegistry):
|
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self.models_registry = models_registry
|
||||
|
||||
def __call__(self, attr_context: AttributeContext) -> Type:
|
||||
default_attr_type = attr_context.default_attr_type
|
||||
|
||||
if isinstance(default_attr_type, Instance):
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attr_type_fullname = default_attr_type.type.fullname()
|
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if attr_type_fullname in DB_FIELDS_TO_TYPES:
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return attr_context.api.named_type(DB_FIELDS_TO_TYPES[attr_type_fullname])
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||||
|
||||
# if 'base' in default_attr_type.type.metadata:
|
||||
# referred_base_model = default_attr_type.type.metadata['base']
|
||||
|
||||
if 'members' in attr_context.type.type.metadata:
|
||||
arg_name = attr_context.context.name
|
||||
if arg_name in attr_context.type.type.metadata['members']:
|
||||
referred_base_model = attr_context.type.type.metadata['members'][arg_name]
|
||||
|
||||
typ = lookup_django_model(attr_context.api, referred_base_model)
|
||||
try:
|
||||
return Instance(typ.node, [])
|
||||
except AssertionError as e:
|
||||
return typ.type
|
||||
|
||||
return default_attr_type
|
||||
|
||||
|
||||
# fields which real type is inside to= expression
|
||||
REFERENCING_DB_FIELDS = {
|
||||
'django.db.models.fields.related.ForeignKey',
|
||||
'django.db.models.fields.related.OneToOneField'
|
||||
}
|
||||
|
||||
|
||||
def save_referred_to_model_in_metadata(rvalue: CallExpr) -> None:
|
||||
to_arg_value = rvalue.args[rvalue.arg_names.index('to')]
|
||||
if isinstance(to_arg_value, StrExpr):
|
||||
referred_model_fullname = get_app_model(to_arg_value.value)
|
||||
else:
|
||||
referred_model_fullname = to_arg_value.fullname
|
||||
|
||||
rvalue.callee.node.metadata['base'] = referred_model_fullname
|
||||
|
||||
|
||||
class CollectModelsInformationCallback(object):
|
||||
def __init__(self, model_registry: DjangoModelsRegistry):
|
||||
self.model_registry = model_registry
|
||||
|
||||
def __call__(self, model_definition: ClassDefContext) -> None:
|
||||
self.model_registry.base_models.add(model_definition.cls.fullname)
|
||||
plugin_api = DjangoPluginApi(mypy_api=model_definition.api)
|
||||
|
||||
for member in model_definition.cls.defs.body:
|
||||
if isinstance(member, AssignmentStmt):
|
||||
if len(member.lvalues) > 1:
|
||||
return None
|
||||
|
||||
arg_name = member.lvalues[0].name
|
||||
arg_name_as_id = arg_name + '_id'
|
||||
|
||||
rvalue = member.rvalue
|
||||
if isinstance(rvalue, CallExpr):
|
||||
if not isinstance(rvalue.callee, RefExpr):
|
||||
return None
|
||||
|
||||
if rvalue.callee.fullname in REFERENCING_DB_FIELDS:
|
||||
if rvalue.callee.fullname == 'django.db.models.fields.related.ForeignKey':
|
||||
model_definition.cls.info.names[arg_name_as_id] = \
|
||||
model_definition.api.lookup_fully_qualified('builtins.int')
|
||||
|
||||
referred_to_model = rvalue.args[rvalue.arg_names.index('to')]
|
||||
if isinstance(referred_to_model, StrExpr):
|
||||
referred_model_fullname = get_app_model(referred_to_model.value)
|
||||
else:
|
||||
referred_model_fullname = referred_to_model.fullname
|
||||
|
||||
rvalue.callee.node.metadata['base'] = referred_model_fullname
|
||||
|
||||
referred_model = model_definition.api.lookup_fully_qualified_or_none(referred_model_fullname)
|
||||
|
||||
if 'related_name' in rvalue.arg_names:
|
||||
related_arg_value = rvalue.args[rvalue.arg_names.index('related_name')].value
|
||||
referred_model_class_def = referred_model.node.defn # type: nodes.ClassDef
|
||||
|
||||
referred_model_class_def.defs.body.append(
|
||||
plugin_api.generate_related_manager_assignment_stmt(related_arg_value,
|
||||
model_definition.cls.fullname))
|
||||
|
||||
if rvalue.callee.fullname == 'django.db.models.fields.related.OneToOneField':
|
||||
referred_to_model = rvalue.args[rvalue.arg_names.index('to')]
|
||||
if isinstance(referred_to_model, StrExpr):
|
||||
referred_model_fullname = get_app_model(referred_to_model.value)
|
||||
else:
|
||||
referred_model_fullname = referred_to_model.fullname
|
||||
|
||||
referred_model = model_definition.api.lookup_fully_qualified_or_none(referred_model_fullname)
|
||||
|
||||
if 'related_name' in rvalue.arg_names:
|
||||
related_arg_value = rvalue.args[rvalue.arg_names.index('related_name')].value
|
||||
referred_model.node.names[related_arg_value] = \
|
||||
model_definition.api.lookup_fully_qualified_or_none(model_definition.cls.fullname)
|
||||
|
||||
rvalue.callee.node.metadata['base'] = referred_model_fullname
|
||||
|
||||
rvalue.callee.node.metadata['name'] = arg_name
|
||||
if 'members' not in model_definition.cls.info.metadata:
|
||||
model_definition.cls.info.metadata['members'] = {}
|
||||
|
||||
model_definition.cls.info.metadata['members'][arg_name] = rvalue.callee.node.metadata.get('base', None)
|
||||
@@ -1,54 +1,24 @@
|
||||
from typing import Optional, Callable
|
||||
from typing import Optional, Callable, Type
|
||||
|
||||
from mypy.plugin import AttributeContext
|
||||
from mypy.types import Type, Instance
|
||||
from mypy.plugin import Plugin, ClassDefContext, AttributeContext
|
||||
|
||||
from mypy_django_plugin.helpers import lookup_django_model
|
||||
from mypy_django_plugin.model_classes import DjangoModelsRegistry
|
||||
from mypy_django_plugin.plugins.base import BaseDjangoModelsPlugin
|
||||
|
||||
# mapping between field types and plain python types
|
||||
DB_FIELDS_TO_TYPES = {
|
||||
'django.db.models.fields.CharField': 'builtins.str',
|
||||
'django.db.models.fields.TextField': 'builtins.str',
|
||||
'django.db.models.fields.BooleanField': 'builtins.bool',
|
||||
# 'django.db.models.fields.NullBooleanField': 'typing.Optional[builtins.bool]',
|
||||
'django.db.models.fields.IntegerField': 'builtins.int',
|
||||
'django.db.models.fields.AutoField': 'builtins.int',
|
||||
'django.db.models.fields.FloatField': 'builtins.float',
|
||||
'django.contrib.postgres.fields.jsonb.JSONField': 'builtins.dict',
|
||||
'django.contrib.postgres.fields.array.ArrayField': 'typing.Iterable'
|
||||
}
|
||||
from mypy_django_plugin.plugins.callbacks import CollectModelsInformationCallback, DetermineFieldPythonTypeCallback
|
||||
|
||||
|
||||
class DetermineFieldPythonTypeCallback(object):
|
||||
def __init__(self, models_registry: DjangoModelsRegistry):
|
||||
self.models_registry = models_registry
|
||||
class FieldToPythonTypePlugin(Plugin):
|
||||
model_registry = DjangoModelsRegistry()
|
||||
|
||||
def __call__(self, attr_context: AttributeContext) -> Type:
|
||||
default_attr_type = attr_context.default_attr_type
|
||||
def get_base_class_hook(self, fullname: str
|
||||
) -> Optional[Callable[[ClassDefContext], None]]:
|
||||
if fullname in self.model_registry:
|
||||
return CollectModelsInformationCallback(self.model_registry)
|
||||
|
||||
if isinstance(default_attr_type, Instance):
|
||||
attr_type_fullname = default_attr_type.type.fullname()
|
||||
if attr_type_fullname in DB_FIELDS_TO_TYPES:
|
||||
return attr_context.api.named_type(DB_FIELDS_TO_TYPES[attr_type_fullname])
|
||||
return None
|
||||
|
||||
if 'base' in default_attr_type.type.metadata:
|
||||
referred_base_model = default_attr_type.type.metadata['base']
|
||||
try:
|
||||
node = lookup_django_model(attr_context.api, referred_base_model).node
|
||||
return Instance(node, [])
|
||||
except AssertionError as e:
|
||||
print(e)
|
||||
print('name to lookup:', referred_base_model)
|
||||
pass
|
||||
|
||||
return default_attr_type
|
||||
|
||||
|
||||
class FieldToPythonTypePlugin(BaseDjangoModelsPlugin):
|
||||
def get_attribute_hook(self, fullname: str
|
||||
) -> Optional[Callable[[AttributeContext], Type]]:
|
||||
# print(fullname)
|
||||
classname, _, attrname = fullname.rpartition('.')
|
||||
if classname and classname in self.model_registry:
|
||||
return DetermineFieldPythonTypeCallback(self.model_registry)
|
||||
|
||||
Reference in New Issue
Block a user