diff options
Diffstat (limited to 'venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/plugin.py')
| -rw-r--r-- | venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/plugin.py | 303 |
1 files changed, 0 insertions, 303 deletions
diff --git a/venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/plugin.py b/venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/plugin.py deleted file mode 100644 index 00eb4d1..0000000 --- a/venv/lib/python3.11/site-packages/sqlalchemy/ext/mypy/plugin.py +++ /dev/null @@ -1,303 +0,0 @@ -# ext/mypy/plugin.py -# Copyright (C) 2021-2024 the SQLAlchemy authors and contributors -# <see AUTHORS file> -# -# This module is part of SQLAlchemy and is released under -# the MIT License: https://www.opensource.org/licenses/mit-license.php - -""" -Mypy plugin for SQLAlchemy ORM. - -""" -from __future__ import annotations - -from typing import Callable -from typing import List -from typing import Optional -from typing import Tuple -from typing import Type as TypingType -from typing import Union - -from mypy import nodes -from mypy.mro import calculate_mro -from mypy.mro import MroError -from mypy.nodes import Block -from mypy.nodes import ClassDef -from mypy.nodes import GDEF -from mypy.nodes import MypyFile -from mypy.nodes import NameExpr -from mypy.nodes import SymbolTable -from mypy.nodes import SymbolTableNode -from mypy.nodes import TypeInfo -from mypy.plugin import AttributeContext -from mypy.plugin import ClassDefContext -from mypy.plugin import DynamicClassDefContext -from mypy.plugin import Plugin -from mypy.plugin import SemanticAnalyzerPluginInterface -from mypy.types import get_proper_type -from mypy.types import Instance -from mypy.types import Type - -from . import decl_class -from . import names -from . import util - -try: - __import__("sqlalchemy-stubs") -except ImportError: - pass -else: - raise ImportError( - "The SQLAlchemy mypy plugin in SQLAlchemy " - "2.0 does not work with sqlalchemy-stubs or " - "sqlalchemy2-stubs installed, as well as with any other third party " - "SQLAlchemy stubs. Please uninstall all SQLAlchemy stubs " - "packages." - ) - - -class SQLAlchemyPlugin(Plugin): - def get_dynamic_class_hook( - self, fullname: str - ) -> Optional[Callable[[DynamicClassDefContext], None]]: - if names.type_id_for_fullname(fullname) is names.DECLARATIVE_BASE: - return _dynamic_class_hook - return None - - def get_customize_class_mro_hook( - self, fullname: str - ) -> Optional[Callable[[ClassDefContext], None]]: - return _fill_in_decorators - - def get_class_decorator_hook( - self, fullname: str - ) -> Optional[Callable[[ClassDefContext], None]]: - sym = self.lookup_fully_qualified(fullname) - - if sym is not None and sym.node is not None: - type_id = names.type_id_for_named_node(sym.node) - if type_id is names.MAPPED_DECORATOR: - return _cls_decorator_hook - elif type_id in ( - names.AS_DECLARATIVE, - names.AS_DECLARATIVE_BASE, - ): - return _base_cls_decorator_hook - elif type_id is names.DECLARATIVE_MIXIN: - return _declarative_mixin_hook - - return None - - def get_metaclass_hook( - self, fullname: str - ) -> Optional[Callable[[ClassDefContext], None]]: - if names.type_id_for_fullname(fullname) is names.DECLARATIVE_META: - # Set any classes that explicitly have metaclass=DeclarativeMeta - # as declarative so the check in `get_base_class_hook()` works - return _metaclass_cls_hook - - return None - - def get_base_class_hook( - self, fullname: str - ) -> Optional[Callable[[ClassDefContext], None]]: - sym = self.lookup_fully_qualified(fullname) - - if ( - sym - and isinstance(sym.node, TypeInfo) - and util.has_declarative_base(sym.node) - ): - return _base_cls_hook - - return None - - def get_attribute_hook( - self, fullname: str - ) -> Optional[Callable[[AttributeContext], Type]]: - if fullname.startswith( - "sqlalchemy.orm.attributes.QueryableAttribute." - ): - return _queryable_getattr_hook - - return None - - def get_additional_deps( - self, file: MypyFile - ) -> List[Tuple[int, str, int]]: - return [ - # - (10, "sqlalchemy.orm", -1), - (10, "sqlalchemy.orm.attributes", -1), - (10, "sqlalchemy.orm.decl_api", -1), - ] - - -def plugin(version: str) -> TypingType[SQLAlchemyPlugin]: - return SQLAlchemyPlugin - - -def _dynamic_class_hook(ctx: DynamicClassDefContext) -> None: - """Generate a declarative Base class when the declarative_base() function - is encountered.""" - - _add_globals(ctx) - - cls = ClassDef(ctx.name, Block([])) - cls.fullname = ctx.api.qualified_name(ctx.name) - - info = TypeInfo(SymbolTable(), cls, ctx.api.cur_mod_id) - cls.info = info - _set_declarative_metaclass(ctx.api, cls) - - cls_arg = util.get_callexpr_kwarg(ctx.call, "cls", expr_types=(NameExpr,)) - if cls_arg is not None and isinstance(cls_arg.node, TypeInfo): - util.set_is_base(cls_arg.node) - decl_class.scan_declarative_assignments_and_apply_types( - cls_arg.node.defn, ctx.api, is_mixin_scan=True - ) - info.bases = [Instance(cls_arg.node, [])] - else: - obj = ctx.api.named_type(names.NAMED_TYPE_BUILTINS_OBJECT) - - info.bases = [obj] - - try: - calculate_mro(info) - except MroError: - util.fail( - ctx.api, "Not able to calculate MRO for declarative base", ctx.call - ) - obj = ctx.api.named_type(names.NAMED_TYPE_BUILTINS_OBJECT) - info.bases = [obj] - info.fallback_to_any = True - - ctx.api.add_symbol_table_node(ctx.name, SymbolTableNode(GDEF, info)) - util.set_is_base(info) - - -def _fill_in_decorators(ctx: ClassDefContext) -> None: - for decorator in ctx.cls.decorators: - # set the ".fullname" attribute of a class decorator - # that is a MemberExpr. This causes the logic in - # semanal.py->apply_class_plugin_hooks to invoke the - # get_class_decorator_hook for our "registry.map_class()" - # and "registry.as_declarative_base()" methods. - # this seems like a bug in mypy that these decorators are otherwise - # skipped. - - if ( - isinstance(decorator, nodes.CallExpr) - and isinstance(decorator.callee, nodes.MemberExpr) - and decorator.callee.name == "as_declarative_base" - ): - target = decorator.callee - elif ( - isinstance(decorator, nodes.MemberExpr) - and decorator.name == "mapped" - ): - target = decorator - else: - continue - - if isinstance(target.expr, NameExpr): - sym = ctx.api.lookup_qualified( - target.expr.name, target, suppress_errors=True - ) - else: - continue - - if sym and sym.node: - sym_type = get_proper_type(sym.type) - if isinstance(sym_type, Instance): - target.fullname = f"{sym_type.type.fullname}.{target.name}" - else: - # if the registry is in the same file as where the - # decorator is used, it might not have semantic - # symbols applied and we can't get a fully qualified - # name or an inferred type, so we are actually going to - # flag an error in this case that they need to annotate - # it. The "registry" is declared just - # once (or few times), so they have to just not use - # type inference for its assignment in this one case. - util.fail( - ctx.api, - "Class decorator called %s(), but we can't " - "tell if it's from an ORM registry. Please " - "annotate the registry assignment, e.g. " - "my_registry: registry = registry()" % target.name, - sym.node, - ) - - -def _cls_decorator_hook(ctx: ClassDefContext) -> None: - _add_globals(ctx) - assert isinstance(ctx.reason, nodes.MemberExpr) - expr = ctx.reason.expr - - assert isinstance(expr, nodes.RefExpr) and isinstance(expr.node, nodes.Var) - - node_type = get_proper_type(expr.node.type) - - assert ( - isinstance(node_type, Instance) - and names.type_id_for_named_node(node_type.type) is names.REGISTRY - ) - - decl_class.scan_declarative_assignments_and_apply_types(ctx.cls, ctx.api) - - -def _base_cls_decorator_hook(ctx: ClassDefContext) -> None: - _add_globals(ctx) - - cls = ctx.cls - - _set_declarative_metaclass(ctx.api, cls) - - util.set_is_base(ctx.cls.info) - decl_class.scan_declarative_assignments_and_apply_types( - cls, ctx.api, is_mixin_scan=True - ) - - -def _declarative_mixin_hook(ctx: ClassDefContext) -> None: - _add_globals(ctx) - util.set_is_base(ctx.cls.info) - decl_class.scan_declarative_assignments_and_apply_types( - ctx.cls, ctx.api, is_mixin_scan=True - ) - - -def _metaclass_cls_hook(ctx: ClassDefContext) -> None: - util.set_is_base(ctx.cls.info) - - -def _base_cls_hook(ctx: ClassDefContext) -> None: - _add_globals(ctx) - decl_class.scan_declarative_assignments_and_apply_types(ctx.cls, ctx.api) - - -def _queryable_getattr_hook(ctx: AttributeContext) -> Type: - # how do I....tell it it has no attribute of a certain name? - # can't find any Type that seems to match that - return ctx.default_attr_type - - -def _add_globals(ctx: Union[ClassDefContext, DynamicClassDefContext]) -> None: - """Add __sa_DeclarativeMeta and __sa_Mapped symbol to the global space - for all class defs - - """ - - util.add_global(ctx, "sqlalchemy.orm", "Mapped", "__sa_Mapped") - - -def _set_declarative_metaclass( - api: SemanticAnalyzerPluginInterface, target_cls: ClassDef -) -> None: - info = target_cls.info - sym = api.lookup_fully_qualified_or_none( - "sqlalchemy.orm.decl_api.DeclarativeMeta" - ) - assert sym is not None and isinstance(sym.node, TypeInfo) - info.declared_metaclass = info.metaclass_type = Instance(sym.node, []) |