mirror of
https://github.com/davidhalter/django-stubs.git
synced 2025-12-06 20:24:31 +08:00
remove old semanal plugin data
This commit is contained in:
Maxim Kurnikov
@@ -1,231 +0,0 @@
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from typing import Optional, cast
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from mypy.checker import TypeChecker
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from mypy.nodes import ListExpr, NameExpr, StrExpr, TupleExpr, TypeInfo, Expression
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from mypy.plugin import FunctionContext
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from mypy.types import (
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AnyType, CallableType, Instance, TupleType, Type, UnionType,
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)
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from mypy_django_plugin.lib import fullnames, helpers, metadata
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def extract_referred_to_type(ctx: FunctionContext) -> Optional[Instance]:
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api = cast(TypeChecker, ctx.api)
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if 'to' not in ctx.callee_arg_names:
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api.msg.fail(f'to= parameter must be set for {ctx.context.callee.fullname}',
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context=ctx.context)
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return None
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arg_type = ctx.arg_types[ctx.callee_arg_names.index('to')][0]
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if not isinstance(arg_type, CallableType):
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to_arg_expr = ctx.args[ctx.callee_arg_names.index('to')][0]
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if not isinstance(to_arg_expr, StrExpr):
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# not string, not supported
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return None
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try:
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model_fullname = helpers.get_model_fullname_from_string(to_arg_expr.value,
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all_modules=api.modules)
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except helpers.SelfReference:
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model_fullname = api.tscope.classes[-1].fullname()
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except helpers.SameFileModel as exc:
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model_fullname = api.tscope.classes[-1].module_name + '.' + exc.model_cls_name
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if model_fullname is None:
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return None
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model_info = helpers.lookup_fully_qualified_generic(model_fullname,
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all_modules=api.modules)
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if model_info is None or not isinstance(model_info, TypeInfo):
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return None
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return Instance(model_info, [])
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referred_to_type = arg_type.ret_type
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if not isinstance(referred_to_type, Instance):
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return None
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if not referred_to_type.type.has_base(fullnames.MODEL_CLASS_FULLNAME):
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ctx.api.msg.fail(f'to= parameter value must be '
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f'a subclass of {fullnames.MODEL_CLASS_FULLNAME!r}',
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context=ctx.context)
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return None
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return referred_to_type
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def convert_any_to_type(typ: Type, referred_to_type: Type) -> Type:
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if isinstance(typ, UnionType):
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converted_items = []
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for item in typ.items:
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converted_items.append(convert_any_to_type(item, referred_to_type))
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return UnionType.make_union(converted_items,
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line=typ.line, column=typ.column)
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if isinstance(typ, Instance):
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args = []
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for default_arg in typ.args:
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if isinstance(default_arg, AnyType):
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args.append(referred_to_type)
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else:
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args.append(default_arg)
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return helpers.reparametrize_instance(typ, args)
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if isinstance(typ, AnyType):
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return referred_to_type
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return typ
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def fill_descriptor_types_for_related_field(ctx: FunctionContext) -> Type:
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default_return_type = set_descriptor_types_for_field(ctx)
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referred_to_type = extract_referred_to_type(ctx)
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if referred_to_type is None:
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return default_return_type
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# replace Any with referred_to_type
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args = []
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for default_arg in default_return_type.args:
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args.append(convert_any_to_type(default_arg, referred_to_type))
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return helpers.reparametrize_instance(ctx.default_return_type, new_args=args)
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def set_descriptor_types_for_field(ctx: FunctionContext) -> Instance:
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default_return_type = cast(Instance, ctx.default_return_type)
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is_nullable = helpers.parse_bool(helpers.get_call_argument_by_name(ctx, 'null'))
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set_type = helpers.get_private_descriptor_type(default_return_type.type, '_pyi_private_set_type',
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is_nullable=is_nullable)
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get_type = helpers.get_private_descriptor_type(default_return_type.type, '_pyi_private_get_type',
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is_nullable=is_nullable)
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return helpers.reparametrize_instance(default_return_type, [set_type, get_type])
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def determine_type_of_array_field(ctx: FunctionContext) -> Type:
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default_return_type = set_descriptor_types_for_field(ctx)
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base_field_arg_type = helpers.get_call_argument_type_by_name(ctx, 'base_field')
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if not base_field_arg_type or not isinstance(base_field_arg_type, Instance):
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return default_return_type
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base_type = base_field_arg_type.args[1] # extract __get__ type
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args = []
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for default_arg in default_return_type.args:
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args.append(convert_any_to_type(default_arg, base_type))
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return helpers.reparametrize_instance(default_return_type, args)
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def transform_into_proper_return_type(ctx: FunctionContext) -> Type:
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default_return_type = ctx.default_return_type
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if not isinstance(default_return_type, Instance):
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return default_return_type
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if helpers.has_any_of_bases(default_return_type.type, fullnames.RELATED_FIELDS_CLASSES):
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return fill_descriptor_types_for_related_field(ctx)
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if default_return_type.type.has_base(fullnames.ARRAY_FIELD_FULLNAME):
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return determine_type_of_array_field(ctx)
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return set_descriptor_types_for_field(ctx)
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def process_field_instantiation(ctx: FunctionContext) -> Type:
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# Parse __init__ parameters of field into corresponding Model's metadata
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parse_field_init_arguments_into_model_metadata(ctx)
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return transform_into_proper_return_type(ctx)
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def _parse_choices_type(ctx: FunctionContext, choices_arg: Expression) -> Optional[str]:
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if isinstance(choices_arg, (TupleExpr, ListExpr)):
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# iterable of 2 element tuples of two kinds
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_, analyzed_choices = ctx.api.analyze_iterable_item_type(choices_arg)
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if isinstance(analyzed_choices, TupleType):
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first_element_type = analyzed_choices.items[0]
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if isinstance(first_element_type, Instance):
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return first_element_type.type.fullname()
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def _parse_referenced_model(ctx: FunctionContext, to_arg: Expression) -> Optional[TypeInfo]:
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if isinstance(to_arg, NameExpr) and isinstance(to_arg.node, TypeInfo):
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# reference to the model class
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return to_arg.node
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elif isinstance(to_arg, StrExpr):
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referenced_model_info = helpers.get_model_info(to_arg.value, ctx.api.modules)
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if referenced_model_info is not None:
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return referenced_model_info
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def parse_field_init_arguments_into_model_metadata(ctx: FunctionContext) -> None:
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outer_model = ctx.api.scope.active_class()
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if outer_model is None or not outer_model.has_base(fullnames.MODEL_CLASS_FULLNAME):
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# outside models.Model class, undetermined
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return
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# Determine name of the current field
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for attr_name, stmt in helpers.iter_over_class_level_assignments(outer_model.defn):
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if stmt == ctx.context:
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field_name = attr_name
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break
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else:
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return
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model_fields_metadata = metadata.get_fields_metadata(outer_model)
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# primary key
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is_primary_key = False
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primary_key_arg = helpers.get_call_argument_by_name(ctx, 'primary_key')
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if primary_key_arg:
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is_primary_key = helpers.parse_bool(primary_key_arg)
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model_fields_metadata[field_name] = {'primary_key': is_primary_key}
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# choices
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choices_arg = helpers.get_call_argument_by_name(ctx, 'choices')
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if choices_arg:
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choices_type_fullname = _parse_choices_type(ctx.api, choices_arg)
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if choices_type_fullname:
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model_fields_metadata[field_name]['choices_type'] = choices_type_fullname
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# nullability
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null_arg = helpers.get_call_argument_by_name(ctx, 'null')
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is_nullable = False
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if null_arg:
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is_nullable = helpers.parse_bool(null_arg)
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model_fields_metadata[field_name]['null'] = is_nullable
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# is_blankable
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blank_arg = helpers.get_call_argument_by_name(ctx, 'blank')
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is_blankable = False
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if blank_arg:
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is_blankable = helpers.parse_bool(blank_arg)
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model_fields_metadata[field_name]['blank'] = is_blankable
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# default
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default_arg = helpers.get_call_argument_by_name(ctx, 'default')
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if default_arg and not helpers.is_none_expr(default_arg):
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model_fields_metadata[field_name]['default_specified'] = True
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if helpers.has_any_of_bases(ctx.default_return_type.type, fullnames.RELATED_FIELDS_CLASSES):
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# to
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to_arg = helpers.get_call_argument_by_name(ctx, 'to')
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if to_arg:
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referenced_model = _parse_referenced_model(ctx, to_arg)
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if referenced_model is not None:
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model_fields_metadata[field_name]['to'] = referenced_model.fullname()
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else:
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model_fields_metadata[field_name]['to'] = to_arg.value
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# referenced_model = to_arg.value
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# raise helpers.IncompleteDefnException()
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# model_fields_metadata[field_name]['to'] = referenced_model.fullname()
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# if referenced_model is not None:
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# model_fields_metadata[field_name]['to'] = referenced_model.fullname()
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# else:
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# assert isinstance(to_arg, StrExpr)
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# model_fields_metadata[field_name]['to'] = to_arg.value
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# related_name
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related_name_arg = helpers.get_call_argument_by_name(ctx, 'related_name')
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if related_name_arg:
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if isinstance(related_name_arg, StrExpr):
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model_fields_metadata[field_name]['related_name'] = related_name_arg.value
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else:
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model_fields_metadata[field_name]['related_name'] = outer_model.name().lower() + '_set'
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@@ -1,46 +0,0 @@
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from mypy.plugin import ClassDefContext, MethodContext
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from mypy.types import CallableType, Instance, NoneTyp, Type, TypeType
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from mypy_django_plugin.lib import metadata, helpers
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def make_meta_nested_class_inherit_from_any(ctx: ClassDefContext) -> None:
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meta_node = helpers.get_nested_meta_node_for_current_class(ctx.cls.info)
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if meta_node is None:
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return None
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meta_node.fallback_to_any = True
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def extract_proper_type_for_get_form(ctx: MethodContext) -> Type:
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object_type = ctx.type
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if not isinstance(object_type, Instance):
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return ctx.default_return_type
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form_class_type = helpers.get_call_argument_type_by_name(ctx, 'form_class')
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if form_class_type is None or isinstance(form_class_type, NoneTyp):
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# extract from specified form_class in metadata
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form_class_fullname = metadata.get_django_metadata(object_type.type).get('form_class', None)
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if not form_class_fullname:
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return ctx.default_return_type
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return ctx.api.named_generic_type(form_class_fullname, [])
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if isinstance(form_class_type, TypeType) and isinstance(form_class_type.item, Instance):
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return form_class_type.item
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if isinstance(form_class_type, CallableType) and isinstance(form_class_type.ret_type, Instance):
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return form_class_type.ret_type
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return ctx.default_return_type
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def extract_proper_type_for_get_form_class(ctx: MethodContext) -> Type:
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object_type = ctx.type
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if not isinstance(object_type, Instance):
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return ctx.default_return_type
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form_class_fullname = metadata.get_django_metadata(object_type.type).get('form_class', None)
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if not form_class_fullname:
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return ctx.default_return_type
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return TypeType(ctx.api.named_generic_type(form_class_fullname, []))
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@@ -1,194 +0,0 @@
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from typing import Dict, Optional, Set, cast
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from mypy.checker import TypeChecker
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from mypy.nodes import TypeInfo, Var
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from mypy.plugin import FunctionContext, MethodContext
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from mypy.types import AnyType, Instance, Type, TypeOfAny
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from mypy_django_plugin.lib import metadata, fullnames, helpers
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def extract_base_pointer_args(model: TypeInfo) -> Set[str]:
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pointer_args: Set[str] = set()
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for base in model.bases:
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if base.type.has_base(fullnames.MODEL_CLASS_FULLNAME):
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parent_name = base.type.name().lower()
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pointer_args.add(f'{parent_name}_ptr')
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pointer_args.add(f'{parent_name}_ptr_id')
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return pointer_args
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def redefine_and_typecheck_model_init(ctx: FunctionContext) -> Type:
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assert isinstance(ctx.default_return_type, Instance)
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api = cast(TypeChecker, ctx.api)
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model: TypeInfo = ctx.default_return_type.type
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expected_types = extract_expected_types(ctx, model, is_init=True)
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# order is preserved, can be used for positionals
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positional_names = list(expected_types.keys())
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positional_names.remove('pk')
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visited_positionals = set()
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# check positionals
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for i, (_, actual_pos_type) in enumerate(zip(ctx.arg_names[0], ctx.arg_types[0])):
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actual_pos_name = positional_names[i]
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api.check_subtype(actual_pos_type, expected_types[actual_pos_name],
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ctx.context,
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'Incompatible type for "{}" of "{}"'.format(actual_pos_name,
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model.name()),
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'got', 'expected')
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visited_positionals.add(actual_pos_name)
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# extract name of base models for _ptr
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base_pointer_args = extract_base_pointer_args(model)
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# check kwargs
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for i, (actual_name, actual_type) in enumerate(zip(ctx.arg_names[1], ctx.arg_types[1])):
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if actual_name in base_pointer_args:
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# parent_ptr args are not supported
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continue
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if actual_name in visited_positionals:
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continue
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if actual_name is None:
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# unpacked dict as kwargs is not supported
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continue
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if actual_name not in expected_types:
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ctx.api.fail('Unexpected attribute "{}" for model "{}"'.format(actual_name,
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model.name()),
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ctx.context)
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continue
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api.check_subtype(actual_type, expected_types[actual_name],
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ctx.context,
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'Incompatible type for "{}" of "{}"'.format(actual_name,
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model.name()),
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'got', 'expected')
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return ctx.default_return_type
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def redefine_and_typecheck_model_create(ctx: MethodContext) -> Type:
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api = cast(TypeChecker, ctx.api)
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if isinstance(ctx.type, Instance) and len(ctx.type.args) > 0:
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model_generic_arg = ctx.type.args[0]
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else:
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model_generic_arg = ctx.default_return_type
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if isinstance(model_generic_arg, AnyType):
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return ctx.default_return_type
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model: TypeInfo = model_generic_arg.type
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# extract name of base models for _ptr
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base_pointer_args = extract_base_pointer_args(model)
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expected_types = extract_expected_types(ctx, model)
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for actual_name, actual_type in zip(ctx.arg_names[0], ctx.arg_types[0]):
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if actual_name in base_pointer_args:
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# parent_ptr args are not supported
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continue
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if actual_name is None:
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# unpacked dict as kwargs is not supported
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continue
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if actual_name not in expected_types:
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api.fail('Unexpected attribute "{}" for model "{}"'.format(actual_name,
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model.name()),
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ctx.context)
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continue
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api.check_subtype(actual_type, expected_types[actual_name],
|
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ctx.context,
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'Incompatible type for "{}" of "{}"'.format(actual_name,
|
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model.name()),
|
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'got', 'expected')
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|
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return ctx.default_return_type
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|
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|
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def extract_choices_type(model: TypeInfo, field_name: str) -> Optional[str]:
|
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field_metadata = metadata.get_fields_metadata(model).get(field_name, {})
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if 'choices' in field_metadata:
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return field_metadata['choices']
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return None
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def extract_expected_types(ctx: FunctionContext, model: TypeInfo,
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is_init: bool = False) -> Dict[str, Type]:
|
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api = cast(TypeChecker, ctx.api)
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||||
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||||
expected_types: Dict[str, Type] = {}
|
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primary_key_type = helpers.extract_explicit_set_type_of_model_primary_key(model)
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if not primary_key_type:
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# no explicit primary key, set pk to Any and add id
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primary_key_type = AnyType(TypeOfAny.special_form)
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if is_init:
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expected_types['id'] = helpers.make_optional(ctx.api.named_generic_type('builtins.int', []))
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else:
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expected_types['id'] = ctx.api.named_generic_type('builtins.int', [])
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||||
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||||
expected_types['pk'] = primary_key_type
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||||
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for base in model.mro:
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||||
# extract all fields for all models in MRO
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for name, sym in base.names.items():
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||||
# do not redefine special attrs
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||||
if name in {'_meta', 'pk'}:
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||||
continue
|
||||
|
||||
if isinstance(sym.node, Var):
|
||||
typ = sym.node.type
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||||
if typ is None or isinstance(typ, AnyType):
|
||||
# types are not ready, fallback to Any
|
||||
expected_types[name] = AnyType(TypeOfAny.from_unimported_type)
|
||||
expected_types[name + '_id'] = AnyType(TypeOfAny.from_unimported_type)
|
||||
|
||||
elif isinstance(typ, Instance):
|
||||
field_type = helpers.extract_field_setter_type(typ)
|
||||
if field_type is None:
|
||||
continue
|
||||
|
||||
if helpers.has_any_of_bases(typ.type, (fullnames.FOREIGN_KEY_FULLNAME,
|
||||
fullnames.ONETOONE_FIELD_FULLNAME)):
|
||||
related_primary_key_type = AnyType(TypeOfAny.implementation_artifact)
|
||||
# in case it's optional, we need Instance type
|
||||
referred_to_model = typ.args[1]
|
||||
is_nullable = helpers.is_optional(referred_to_model)
|
||||
if is_nullable:
|
||||
referred_to_model = helpers.make_required(typ.args[1])
|
||||
|
||||
if isinstance(referred_to_model, Instance) and referred_to_model.type.has_base(
|
||||
fullnames.MODEL_CLASS_FULLNAME):
|
||||
pk_type = helpers.extract_explicit_set_type_of_model_primary_key(referred_to_model.type)
|
||||
if not pk_type:
|
||||
# extract set type of AutoField
|
||||
autofield_info = api.lookup_typeinfo('django.db.models.fields.AutoField')
|
||||
pk_type = helpers.get_private_descriptor_type(autofield_info, '_pyi_private_set_type',
|
||||
is_nullable=is_nullable)
|
||||
related_primary_key_type = pk_type
|
||||
|
||||
if is_init:
|
||||
related_primary_key_type = helpers.make_optional(related_primary_key_type)
|
||||
|
||||
expected_types[name + '_id'] = related_primary_key_type
|
||||
|
||||
field_metadata = metadata.get_fields_metadata(model).get(name, {})
|
||||
if field_type:
|
||||
# related fields could be None in __init__ (but should be specified before save())
|
||||
if helpers.has_any_of_bases(typ.type, (fullnames.FOREIGN_KEY_FULLNAME,
|
||||
fullnames.ONETOONE_FIELD_FULLNAME)) and is_init:
|
||||
field_type = helpers.make_optional(field_type)
|
||||
|
||||
# if primary_key=True and default specified
|
||||
elif field_metadata.get('primary_key', False) and field_metadata.get('default_specified',
|
||||
False):
|
||||
field_type = helpers.make_optional(field_type)
|
||||
|
||||
# if CharField(blank=True,...) and not nullable, then field can be None in __init__
|
||||
elif (
|
||||
helpers.has_any_of_bases(typ.type, (fullnames.CHAR_FIELD_FULLNAME,)) and is_init and
|
||||
field_metadata.get('blank', False) and not field_metadata.get('null', False)
|
||||
):
|
||||
field_type = helpers.make_optional(field_type)
|
||||
|
||||
expected_types[name] = field_type
|
||||
|
||||
return expected_types
|
||||
@@ -1,44 +0,0 @@
|
||||
from typing import Optional, cast
|
||||
|
||||
from mypy.checker import TypeChecker
|
||||
from mypy.nodes import Expression, StrExpr, TypeInfo
|
||||
from mypy.plugin import MethodContext
|
||||
from mypy.types import Instance, Type, TypeType
|
||||
|
||||
from mypy_django_plugin.lib import helpers
|
||||
|
||||
|
||||
def get_string_value_from_expr(expr: Expression) -> Optional[str]:
|
||||
if isinstance(expr, StrExpr):
|
||||
return expr.value
|
||||
# TODO: somehow figure out other cases
|
||||
return None
|
||||
|
||||
|
||||
def determine_model_cls_from_string_for_migrations(ctx: MethodContext) -> Type:
|
||||
app_label_expr = ctx.args[ctx.callee_arg_names.index('app_label')][0]
|
||||
app_label = get_string_value_from_expr(app_label_expr)
|
||||
if app_label is None:
|
||||
return ctx.default_return_type
|
||||
|
||||
if 'model_name' not in ctx.callee_arg_names:
|
||||
return ctx.default_return_type
|
||||
|
||||
model_name_expr_tuple = ctx.args[ctx.callee_arg_names.index('model_name')]
|
||||
if not model_name_expr_tuple:
|
||||
return ctx.default_return_type
|
||||
|
||||
model_name = get_string_value_from_expr(model_name_expr_tuple[0])
|
||||
if model_name is None:
|
||||
return ctx.default_return_type
|
||||
|
||||
api = cast(TypeChecker, ctx.api)
|
||||
model_fullname = helpers.get_model_fullname(app_label, model_name, all_modules=api.modules)
|
||||
|
||||
if model_fullname is None:
|
||||
return ctx.default_return_type
|
||||
model_info = helpers.lookup_fully_qualified_generic(model_fullname,
|
||||
all_modules=api.modules)
|
||||
if model_info is None or not isinstance(model_info, TypeInfo):
|
||||
return ctx.default_return_type
|
||||
return TypeType(Instance(model_info, []))
|
||||
@@ -1,388 +0,0 @@
|
||||
from abc import ABCMeta, abstractmethod
|
||||
from typing import Any, Dict, Iterator, List, Optional, Tuple, cast
|
||||
|
||||
import dataclasses
|
||||
from mypy.nodes import (
|
||||
ARG_POS, ARG_STAR, ARG_STAR2, MDEF, Argument, CallExpr, ClassDef, Expression, IndexExpr, MemberExpr, MypyFile,
|
||||
NameExpr, StrExpr, SymbolTableNode, TypeInfo, Var,
|
||||
)
|
||||
from mypy.plugin import ClassDefContext
|
||||
from mypy.plugins.common import add_method
|
||||
from mypy.semanal import SemanticAnalyzerPass2
|
||||
from mypy.types import AnyType, Instance, NoneTyp, TypeOfAny
|
||||
|
||||
from mypy_django_plugin.lib import metadata, fullnames, helpers
|
||||
|
||||
|
||||
@dataclasses.dataclass
|
||||
class ModelClassInitializer(metaclass=ABCMeta):
|
||||
api: SemanticAnalyzerPass2
|
||||
model_classdef: ClassDef
|
||||
app_models_mapping: Optional[Dict[str, str]] = None
|
||||
|
||||
@classmethod
|
||||
def from_ctx(cls, ctx: ClassDefContext, app_models_mapping: Optional[Dict[str, str]]):
|
||||
return cls(api=cast(SemanticAnalyzerPass2, ctx.api),
|
||||
model_classdef=ctx.cls,
|
||||
app_models_mapping=app_models_mapping)
|
||||
|
||||
def get_meta_attribute(self, name: str) -> Optional[Expression]:
|
||||
meta_node = helpers.get_nested_meta_node_for_current_class(self.model_classdef.info)
|
||||
if meta_node is None:
|
||||
return None
|
||||
|
||||
return helpers.get_assignment_stmt_by_name(meta_node, name)
|
||||
|
||||
def is_abstract_model(self) -> bool:
|
||||
is_abstract_expr = self.get_meta_attribute('abstract')
|
||||
if is_abstract_expr is None:
|
||||
return False
|
||||
return self.api.parse_bool(is_abstract_expr)
|
||||
|
||||
def add_new_node_to_model_class(self, name: str, typ: Instance) -> None:
|
||||
# type=: type of the variable itself
|
||||
var = Var(name=name, type=typ)
|
||||
# var.info: type of the object variable is bound to
|
||||
var.info = self.model_classdef.info
|
||||
var._fullname = self.model_classdef.info.fullname() + '.' + name
|
||||
var.is_inferred = True
|
||||
var.is_initialized_in_class = True
|
||||
self.model_classdef.info.names[name] = SymbolTableNode(MDEF, var, plugin_generated=True)
|
||||
|
||||
def model_has_name_defined(self, name: str) -> bool:
|
||||
return name in self.model_classdef.info.names
|
||||
|
||||
@abstractmethod
|
||||
def run(self) -> None:
|
||||
raise NotImplementedError()
|
||||
|
||||
|
||||
def iter_over_one_to_n_related_fields(klass: ClassDef) -> Iterator[Tuple[NameExpr, CallExpr]]:
|
||||
for field_name, field_init in helpers.iter_over_field_inits_in_class(klass):
|
||||
field_info = field_init.callee.node
|
||||
assert isinstance(field_info, TypeInfo)
|
||||
|
||||
if helpers.has_any_of_bases(field_init.callee.node, {fullnames.FOREIGN_KEY_FULLNAME,
|
||||
fullnames.ONETOONE_FIELD_FULLNAME}):
|
||||
yield field_name, field_init
|
||||
|
||||
|
||||
class AddReferencesToRelatedModels(ModelClassInitializer):
|
||||
"""
|
||||
For every
|
||||
attr1 = models.ForeignKey(to=MyModel)
|
||||
sets `attr1_id` attribute to the current model.
|
||||
"""
|
||||
|
||||
def run(self) -> None:
|
||||
for field_name, field_init_expr in helpers.iter_over_field_inits_in_class(self.model_classdef):
|
||||
ref_id_name = field_name + '_id'
|
||||
field_info = field_init_expr.callee.node
|
||||
assert isinstance(field_info, TypeInfo)
|
||||
|
||||
if not self.model_has_name_defined(ref_id_name):
|
||||
if helpers.has_any_of_bases(field_info, {fullnames.FOREIGN_KEY_FULLNAME,
|
||||
fullnames.ONETOONE_FIELD_FULLNAME}):
|
||||
self.add_new_node_to_model_class(name=ref_id_name,
|
||||
typ=self.api.builtin_type('builtins.int'))
|
||||
|
||||
# field_init_expr.callee.node
|
||||
#
|
||||
# for field_name, field_init_expr in helpers.iter_call_assignments_in_class(self.model_classdef):
|
||||
# ref_id_name = field_name + '_id'
|
||||
# if not self.model_has_name_defined(ref_id_name):
|
||||
# field_class_info = field_init_expr.callee.node
|
||||
# if not field_class_info:
|
||||
#
|
||||
# if not field_init_expr.callee.node:
|
||||
#
|
||||
# if isinstance(field_init_expr.callee.node, TypeInfo) \
|
||||
# and helpers.has_any_of_bases(field_init_expr.callee.node,
|
||||
# {fullnames.FOREIGN_KEY_FULLNAME,
|
||||
# fullnames.ONETOONE_FIELD_FULLNAME}):
|
||||
# self.add_new_node_to_model_class(name=ref_id_name,
|
||||
# typ=self.api.builtin_type('builtins.int'))
|
||||
|
||||
|
||||
class InjectAnyAsBaseForNestedMeta(ModelClassInitializer):
|
||||
"""
|
||||
Replaces
|
||||
class MyModel(models.Model):
|
||||
class Meta:
|
||||
pass
|
||||
with
|
||||
class MyModel(models.Model):
|
||||
class Meta(Any):
|
||||
pass
|
||||
to get around incompatible Meta inner classes for different models.
|
||||
"""
|
||||
|
||||
def run(self) -> None:
|
||||
meta_node = helpers.get_nested_meta_node_for_current_class(self.model_classdef.info)
|
||||
if meta_node is None:
|
||||
return None
|
||||
meta_node.fallback_to_any = True
|
||||
|
||||
|
||||
class AddDefaultObjectsManager(ModelClassInitializer):
|
||||
def _add_new_manager(self, name: str, manager_type: Optional[Instance]) -> None:
|
||||
if manager_type is None:
|
||||
return None
|
||||
self.add_new_node_to_model_class(name, manager_type)
|
||||
|
||||
def _add_private_default_manager(self, manager_type: Optional[Instance]) -> None:
|
||||
if manager_type is None:
|
||||
return None
|
||||
self.add_new_node_to_model_class('_default_manager', manager_type)
|
||||
|
||||
def _get_existing_managers(self) -> List[Tuple[str, TypeInfo]]:
|
||||
managers = []
|
||||
for base in self.model_classdef.info.mro:
|
||||
for manager_name, call_expr in helpers.iter_call_assignments_in_class(base.defn):
|
||||
callee_expr = call_expr.callee
|
||||
if isinstance(callee_expr, IndexExpr):
|
||||
callee_expr = callee_expr.analyzed.expr
|
||||
|
||||
if isinstance(callee_expr, (MemberExpr, NameExpr)) \
|
||||
and isinstance(callee_expr.node, TypeInfo) \
|
||||
and callee_expr.node.has_base(fullnames.BASE_MANAGER_CLASS_FULLNAME):
|
||||
managers.append((manager_name, callee_expr.node))
|
||||
return managers
|
||||
|
||||
def run(self) -> None:
|
||||
existing_managers = self._get_existing_managers()
|
||||
if existing_managers:
|
||||
first_manager_type = None
|
||||
for manager_name, manager_type_info in existing_managers:
|
||||
manager_type = Instance(manager_type_info, args=[Instance(self.model_classdef.info, [])])
|
||||
self._add_new_manager(name=manager_name, manager_type=manager_type)
|
||||
if first_manager_type is None:
|
||||
first_manager_type = manager_type
|
||||
else:
|
||||
if self.is_abstract_model():
|
||||
# abstract models do not need 'objects' queryset
|
||||
return None
|
||||
|
||||
first_manager_type = self.api.named_type_or_none(fullnames.MANAGER_CLASS_FULLNAME,
|
||||
args=[Instance(self.model_classdef.info, [])])
|
||||
self._add_new_manager('objects', manager_type=first_manager_type)
|
||||
|
||||
if self.is_abstract_model():
|
||||
return None
|
||||
default_manager_name_expr = self.get_meta_attribute('default_manager_name')
|
||||
if isinstance(default_manager_name_expr, StrExpr):
|
||||
self._add_private_default_manager(self.model_classdef.info.get(default_manager_name_expr.value).type)
|
||||
else:
|
||||
self._add_private_default_manager(first_manager_type)
|
||||
|
||||
|
||||
class AddDefaultPrimaryKey(ModelClassInitializer):
|
||||
"""
|
||||
Sets default integer `id` attribute, if:
|
||||
* model is not abstract (abstract = False)
|
||||
* there's no field with primary_key=True
|
||||
"""
|
||||
|
||||
def run(self) -> None:
|
||||
if self.is_abstract_model():
|
||||
# abstract models cannot be instantiated, and do not need `id` attribute
|
||||
return None
|
||||
|
||||
for _, field_init_expr in helpers.iter_over_field_inits_in_class(self.model_classdef):
|
||||
if ('primary_key' in field_init_expr.arg_names
|
||||
and self.api.parse_bool(field_init_expr.args[field_init_expr.arg_names.index('primary_key')])):
|
||||
break
|
||||
else:
|
||||
self.add_new_node_to_model_class('id', self.api.builtin_type('builtins.int'))
|
||||
|
||||
|
||||
def _get_to_expr(field_init_expr) -> Expression:
|
||||
if 'to' in field_init_expr.arg_names:
|
||||
return field_init_expr.args[field_init_expr.arg_names.index('to')]
|
||||
else:
|
||||
return field_init_expr.args[0]
|
||||
|
||||
|
||||
class AddRelatedManagers(ModelClassInitializer):
|
||||
def _add_related_manager_variable(self, manager_name: str, related_field_type_data: Dict[str, Any]) -> None:
|
||||
# add dummy related manager for use later
|
||||
self.add_new_node_to_model_class(manager_name, self.api.builtin_type('builtins.object'))
|
||||
|
||||
# save name in metadata for use in get_attribute_hook later
|
||||
related_managers_metadata = metadata.get_related_managers_metadata(self.model_classdef.info)
|
||||
related_managers_metadata[manager_name] = related_field_type_data
|
||||
|
||||
def run(self) -> None:
|
||||
for module_name, module_file in self.api.modules.items():
|
||||
for model_classdef in helpers.iter_over_toplevel_classes(module_file):
|
||||
for field_name, field_init in helpers.iter_over_field_inits_in_class(model_classdef):
|
||||
field_info = field_init.callee.node
|
||||
assert isinstance(field_info, TypeInfo)
|
||||
|
||||
if helpers.has_any_of_bases(field_info, fullnames.RELATED_FIELDS_CLASSES):
|
||||
# try:
|
||||
to_arg_expr = _get_to_expr(field_init)
|
||||
if isinstance(to_arg_expr, NameExpr):
|
||||
referenced_model_fullname = module_file.names[to_arg_expr.name].fullname
|
||||
else:
|
||||
assert isinstance(to_arg_expr, StrExpr)
|
||||
value = to_arg_expr.value
|
||||
if value == 'self':
|
||||
# reference to the same model class
|
||||
referenced_model_fullname = model_classdef.fullname
|
||||
elif '.' not in value:
|
||||
# reference to class in the current module
|
||||
referenced_model_fullname = module_name + '.' + value
|
||||
else:
|
||||
referenced_model_fullname = self.app_models_mapping[value]
|
||||
|
||||
# referenced_model_fullname = extract_referenced_model_fullname(field_init,
|
||||
# module_file=module_file,
|
||||
# all_modules=self.api.modules)
|
||||
# if not referenced_model_fullname:
|
||||
# raise helpers.IncompleteDefnException('Cannot parse referenced model fullname')
|
||||
|
||||
# except helpers.SelfReference:
|
||||
# referenced_model_fullname = model_classdef.fullname
|
||||
#
|
||||
# except helpers.SameFileModel as exc:
|
||||
# referenced_model_fullname = module_name + '.' + exc.model_cls_name
|
||||
|
||||
if self.model_classdef.fullname == referenced_model_fullname:
|
||||
if 'related_name' in field_init.arg_names:
|
||||
related_name_expr = field_init.args[field_init.arg_names.index('related_name')]
|
||||
if not isinstance(related_name_expr, StrExpr):
|
||||
# not string 'related_name=' not yet supported
|
||||
continue
|
||||
related_name = related_name_expr.value
|
||||
if related_name == '+':
|
||||
# No backwards relation is desired
|
||||
continue
|
||||
else:
|
||||
related_name = model_classdef.name.lower() + '_set'
|
||||
|
||||
# Default related_query_name to related_name
|
||||
if 'related_query_name' in field_init.arg_names:
|
||||
related_query_name_expr = field_init.args[field_init.arg_names.index('related_query_name')]
|
||||
if isinstance(related_query_name_expr, StrExpr):
|
||||
related_query_name = related_query_name_expr.value
|
||||
else:
|
||||
# not string 'related_query_name=' is not yet supported
|
||||
related_query_name = None
|
||||
# TODO: Handle defaulting to model name if related_name is not set
|
||||
else:
|
||||
related_query_name = related_name
|
||||
|
||||
# if helpers.has_any_of_bases(field_info, {fullnames.FOREIGN_KEY_FULLNAME,
|
||||
# fullnames.MANYTOMANY_FIELD_FULLNAME}):
|
||||
# # as long as Model is not a Generic, one level depth is fine
|
||||
# field_type_data = {
|
||||
# 'manager': fullnames.RELATED_MANAGER_CLASS_FULLNAME,
|
||||
# 'of': [model_classdef.info.fullname()]
|
||||
# }
|
||||
# else:
|
||||
# field_type_data = {
|
||||
# 'manager': model_classdef.info.fullname(),
|
||||
# 'of': []
|
||||
# }
|
||||
self.add_new_node_to_model_class(related_name, self.api.builtin_type('builtins.object'))
|
||||
|
||||
# self._add_related_manager_variable(related_name, related_field_type_data=field_type_data)
|
||||
|
||||
if related_query_name is not None:
|
||||
# Only create related_query_name if it is a string literal
|
||||
metadata.get_lookups_metadata(self.model_classdef.info)[related_query_name] = {
|
||||
'related_query_name_target': related_name
|
||||
}
|
||||
|
||||
|
||||
def get_related_field_type(rvalue: CallExpr, related_model_typ: TypeInfo) -> Dict[str, Any]:
|
||||
if rvalue.callee.name in {'ForeignKey', 'ManyToManyField'}:
|
||||
return {
|
||||
'manager': fullnames.RELATED_MANAGER_CLASS_FULLNAME,
|
||||
'of': [related_model_typ.fullname()]
|
||||
}
|
||||
else:
|
||||
return {
|
||||
'manager': related_model_typ.fullname(),
|
||||
'of': []
|
||||
}
|
||||
|
||||
|
||||
def is_related_field(expr: CallExpr, module_file: MypyFile) -> bool:
|
||||
""" Checks whether current CallExpr represents any supported RelatedField subclass"""
|
||||
if isinstance(expr.callee, MemberExpr) and isinstance(expr.callee.expr, NameExpr):
|
||||
module = module_file.names.get(expr.callee.expr.name)
|
||||
if module \
|
||||
and module.fullname == 'django.db.models' \
|
||||
and expr.callee.name in {'ForeignKey',
|
||||
'OneToOneField',
|
||||
'ManyToManyField'}:
|
||||
return True
|
||||
return False
|
||||
|
||||
|
||||
def extract_referenced_model_fullname(field_init_expr: CallExpr,
|
||||
module_file: MypyFile,
|
||||
all_modules: Dict[str, MypyFile]) -> Optional[str]:
|
||||
""" Returns fullname of a Model referenced in "to=" argument of the CallExpr"""
|
||||
if 'to' in field_init_expr.arg_names:
|
||||
to_expr = field_init_expr.args[field_init_expr.arg_names.index('to')]
|
||||
else:
|
||||
to_expr = field_init_expr.args[0]
|
||||
|
||||
if isinstance(to_expr, NameExpr):
|
||||
return module_file.names[to_expr.name].fullname
|
||||
|
||||
elif isinstance(to_expr, StrExpr):
|
||||
typ_fullname = helpers.get_model_fullname_from_string(to_expr.value, all_modules)
|
||||
if typ_fullname is None:
|
||||
return None
|
||||
return typ_fullname
|
||||
|
||||
return None
|
||||
|
||||
|
||||
def add_dummy_init_method(ctx: ClassDefContext) -> None:
|
||||
any = AnyType(TypeOfAny.special_form)
|
||||
|
||||
pos_arg = Argument(variable=Var('args', any),
|
||||
type_annotation=any, initializer=None, kind=ARG_STAR)
|
||||
kw_arg = Argument(variable=Var('kwargs', any),
|
||||
type_annotation=any, initializer=None, kind=ARG_STAR2)
|
||||
|
||||
add_method(ctx, '__init__', [pos_arg, kw_arg], NoneTyp())
|
||||
|
||||
# mark as model class
|
||||
ctx.cls.info.metadata.setdefault('django', {})['generated_init'] = True
|
||||
|
||||
|
||||
def add_get_set_attr_fallback_to_any(ctx: ClassDefContext):
|
||||
any = AnyType(TypeOfAny.special_form)
|
||||
|
||||
name_arg = Argument(variable=Var('name', any),
|
||||
type_annotation=any, initializer=None, kind=ARG_POS)
|
||||
add_method(ctx, '__getattr__', [name_arg], any)
|
||||
|
||||
value_arg = Argument(variable=Var('value', any),
|
||||
type_annotation=any, initializer=None, kind=ARG_POS)
|
||||
add_method(ctx, '__setattr__', [name_arg, value_arg], any)
|
||||
|
||||
|
||||
def process_model_class(ctx: ClassDefContext,
|
||||
ignore_unknown_attributes: bool,
|
||||
app_models_mapping: Optional[Dict[str, str]]) -> None:
|
||||
initializers = [
|
||||
InjectAnyAsBaseForNestedMeta,
|
||||
AddDefaultPrimaryKey,
|
||||
AddReferencesToRelatedModels,
|
||||
AddDefaultObjectsManager,
|
||||
AddRelatedManagers,
|
||||
]
|
||||
for initializer_cls in initializers:
|
||||
initializer_cls.from_ctx(ctx, app_models_mapping).run()
|
||||
|
||||
add_dummy_init_method(ctx)
|
||||
|
||||
if ignore_unknown_attributes:
|
||||
add_get_set_attr_fallback_to_any(ctx)
|
||||
@@ -1,209 +0,0 @@
|
||||
from collections import OrderedDict
|
||||
from typing import List, Optional, cast
|
||||
|
||||
from mypy.checker import TypeChecker
|
||||
from mypy.nodes import StrExpr, TypeInfo
|
||||
from mypy.plugin import (
|
||||
AnalyzeTypeContext, CheckerPluginInterface, MethodContext,
|
||||
)
|
||||
from mypy.types import AnyType, Instance, Type, TypeOfAny
|
||||
|
||||
from mypy_django_plugin.lib import helpers
|
||||
from mypy_django_plugin.lib.lookups import (
|
||||
LookupException, RelatedModelNode, resolve_lookup,
|
||||
)
|
||||
|
||||
|
||||
def get_queryset_model_arg(ret_type: Instance) -> Type:
|
||||
if ret_type.args:
|
||||
return ret_type.args[0]
|
||||
else:
|
||||
return AnyType(TypeOfAny.implementation_artifact)
|
||||
|
||||
|
||||
def extract_proper_type_for_queryset_values(ctx: MethodContext) -> Type:
|
||||
object_type = ctx.type
|
||||
if not isinstance(object_type, Instance):
|
||||
return ctx.default_return_type
|
||||
|
||||
fields_arg_expr = ctx.args[ctx.callee_arg_names.index('fields')]
|
||||
if len(fields_arg_expr) == 0:
|
||||
# values_list/values with no args is not yet supported, so default to Any types for field types
|
||||
# It should in the future include all model fields, "extra" fields and "annotated" fields
|
||||
return ctx.default_return_type
|
||||
|
||||
model_arg = get_queryset_model_arg(ctx.default_return_type)
|
||||
if isinstance(model_arg, Instance):
|
||||
model_type_info = model_arg.type
|
||||
else:
|
||||
model_type_info = None
|
||||
|
||||
column_types: OrderedDict[str, Type] = OrderedDict()
|
||||
|
||||
# parse *fields
|
||||
for field_expr in fields_arg_expr:
|
||||
if isinstance(field_expr, StrExpr):
|
||||
field_name = field_expr.value
|
||||
# Default to any type
|
||||
column_types[field_name] = AnyType(TypeOfAny.implementation_artifact)
|
||||
|
||||
if model_type_info:
|
||||
resolved_lookup_type = resolve_values_lookup(ctx.api, model_type_info, field_name)
|
||||
if resolved_lookup_type is not None:
|
||||
column_types[field_name] = resolved_lookup_type
|
||||
else:
|
||||
return ctx.default_return_type
|
||||
|
||||
# parse **expressions
|
||||
expression_arg_names = ctx.arg_names[ctx.callee_arg_names.index('expressions')]
|
||||
for expression_name in expression_arg_names:
|
||||
# Arbitrary additional annotation expressions are supported, but they all have type Any for now
|
||||
column_types[expression_name] = AnyType(TypeOfAny.implementation_artifact)
|
||||
|
||||
row_arg = helpers.make_typeddict(ctx.api, fields=column_types,
|
||||
required_keys=set())
|
||||
return helpers.reparametrize_instance(ctx.default_return_type, [model_arg, row_arg])
|
||||
|
||||
|
||||
def extract_proper_type_queryset_values_list(ctx: MethodContext) -> Type:
|
||||
object_type = ctx.type
|
||||
if not isinstance(object_type, Instance):
|
||||
return ctx.default_return_type
|
||||
|
||||
ret = ctx.default_return_type
|
||||
|
||||
model_arg = get_queryset_model_arg(ctx.default_return_type)
|
||||
# model_arg: Union[AnyType, Type] = ret.args[0] if len(ret.args) > 0 else any_type
|
||||
|
||||
column_names: List[Optional[str]] = []
|
||||
column_types: OrderedDict[str, Type] = OrderedDict()
|
||||
|
||||
fields_arg_expr = ctx.args[ctx.callee_arg_names.index('fields')]
|
||||
fields_param_is_specified = True
|
||||
if len(fields_arg_expr) == 0:
|
||||
# values_list/values with no args is not yet supported, so default to Any types for field types
|
||||
# It should in the future include all model fields, "extra" fields and "annotated" fields
|
||||
fields_param_is_specified = False
|
||||
|
||||
if isinstance(model_arg, Instance):
|
||||
model_type_info = model_arg.type
|
||||
else:
|
||||
model_type_info = None
|
||||
|
||||
any_type = AnyType(TypeOfAny.implementation_artifact)
|
||||
|
||||
# Figure out each field name passed to fields
|
||||
only_strings_as_fields_expressions = True
|
||||
for field_expr in fields_arg_expr:
|
||||
if isinstance(field_expr, StrExpr):
|
||||
field_name = field_expr.value
|
||||
column_names.append(field_name)
|
||||
# Default to any type
|
||||
column_types[field_name] = any_type
|
||||
|
||||
if model_type_info:
|
||||
resolved_lookup_type = resolve_values_lookup(ctx.api, model_type_info, field_name)
|
||||
if resolved_lookup_type is not None:
|
||||
column_types[field_name] = resolved_lookup_type
|
||||
else:
|
||||
# Dynamic field names are partially supported for values_list, but not values
|
||||
column_names.append(None)
|
||||
only_strings_as_fields_expressions = False
|
||||
|
||||
flat = helpers.parse_bool(helpers.get_call_argument_by_name(ctx, 'flat'))
|
||||
named = helpers.parse_bool(helpers.get_call_argument_by_name(ctx, 'named'))
|
||||
|
||||
api = cast(TypeChecker, ctx.api)
|
||||
if named and flat:
|
||||
api.fail("'flat' and 'named' can't be used together.", ctx.context)
|
||||
return ret
|
||||
|
||||
elif named:
|
||||
# named=True, flat=False -> List[NamedTuple]
|
||||
if fields_param_is_specified and only_strings_as_fields_expressions:
|
||||
row_arg = helpers.make_named_tuple(api, fields=column_types, name="Row")
|
||||
else:
|
||||
# fallback to catch-all NamedTuple
|
||||
row_arg = helpers.make_named_tuple(api, fields=OrderedDict(), name="Row")
|
||||
|
||||
elif flat:
|
||||
# named=False, flat=True -> List of elements
|
||||
if len(ctx.args[0]) > 1:
|
||||
api.fail("'flat' is not valid when values_list is called with more than one field.",
|
||||
ctx.context)
|
||||
return ctx.default_return_type
|
||||
|
||||
if fields_param_is_specified and only_strings_as_fields_expressions:
|
||||
# Grab first element
|
||||
row_arg = column_types[column_names[0]]
|
||||
else:
|
||||
row_arg = any_type
|
||||
|
||||
else:
|
||||
# named=False, flat=False -> List[Tuple]
|
||||
if fields_param_is_specified:
|
||||
args = [
|
||||
# Fallback to Any if the column name is unknown (e.g. dynamic)
|
||||
column_types.get(column_name, any_type) if column_name is not None else any_type
|
||||
for column_name in column_names
|
||||
]
|
||||
else:
|
||||
args = [any_type]
|
||||
row_arg = helpers.make_tuple(api, fields=args)
|
||||
|
||||
new_type_args = [model_arg, row_arg]
|
||||
return helpers.reparametrize_instance(ret, new_type_args)
|
||||
|
||||
|
||||
def resolve_values_lookup(api: CheckerPluginInterface, model_type_info: TypeInfo, lookup: str) -> Optional[Type]:
|
||||
"""Resolves a values/values_list lookup if possible, to a Type."""
|
||||
try:
|
||||
nodes = resolve_lookup(api, model_type_info, lookup)
|
||||
except LookupException:
|
||||
nodes = []
|
||||
|
||||
if not nodes:
|
||||
return None
|
||||
|
||||
make_optional = False
|
||||
|
||||
for node in nodes:
|
||||
if isinstance(node, RelatedModelNode) and node.is_nullable:
|
||||
# All lookups following a relation which is nullable should be optional
|
||||
make_optional = True
|
||||
|
||||
node = nodes[-1]
|
||||
|
||||
node_type = node.typ
|
||||
if isinstance(node, RelatedModelNode):
|
||||
# Related models used in values/values_list get resolved to the primary key of the related model.
|
||||
# So, we lookup the pk of that model.
|
||||
pk_lookup_nodes = resolve_lookup(api, node_type.type, "pk")
|
||||
if not pk_lookup_nodes:
|
||||
return None
|
||||
node_type = pk_lookup_nodes[0].typ
|
||||
if make_optional:
|
||||
return helpers.make_optional(node_type)
|
||||
else:
|
||||
return node_type
|
||||
|
||||
|
||||
def set_first_generic_param_as_default_for_second(fullname: str, ctx: AnalyzeTypeContext) -> Type:
|
||||
if not ctx.type.args:
|
||||
try:
|
||||
return ctx.api.named_type(fullname, [AnyType(TypeOfAny.explicit),
|
||||
AnyType(TypeOfAny.explicit)])
|
||||
except KeyError:
|
||||
# really should never happen
|
||||
return AnyType(TypeOfAny.explicit)
|
||||
|
||||
args = ctx.type.args
|
||||
if len(args) == 1:
|
||||
args = [args[0], args[0]]
|
||||
|
||||
analyzed_args = [ctx.api.analyze_type(arg) for arg in args]
|
||||
try:
|
||||
return ctx.api.named_type(fullname, analyzed_args)
|
||||
except KeyError:
|
||||
# really should never happen
|
||||
return AnyType(TypeOfAny.explicit)
|
||||
@@ -1,59 +0,0 @@
|
||||
from typing import Optional, Union
|
||||
|
||||
from mypy.checkmember import AttributeContext
|
||||
from mypy.nodes import TypeInfo
|
||||
from mypy.types import AnyType, Instance, Type, TypeOfAny, UnionType
|
||||
|
||||
from mypy_django_plugin.lib import fullnames, helpers
|
||||
|
||||
|
||||
def _extract_referred_to_type_info(typ: Union[UnionType, Instance]) -> Optional[TypeInfo]:
|
||||
if isinstance(typ, Instance):
|
||||
return typ.type
|
||||
else:
|
||||
# should be Union[TYPE, None]
|
||||
typ = helpers.make_required(typ)
|
||||
if isinstance(typ, Instance):
|
||||
return typ.type
|
||||
return None
|
||||
|
||||
|
||||
def extract_and_return_primary_key_of_bound_related_field_parameter(ctx: AttributeContext) -> Type:
|
||||
if not isinstance(ctx.default_attr_type, Instance) or not (ctx.default_attr_type.type.fullname() == 'builtins.int'):
|
||||
return ctx.default_attr_type
|
||||
|
||||
if not isinstance(ctx.type, Instance) or not ctx.type.type.has_base(fullnames.MODEL_CLASS_FULLNAME):
|
||||
return ctx.default_attr_type
|
||||
|
||||
field_name = ctx.context.name.split('_')[0]
|
||||
sym = ctx.type.type.get(field_name)
|
||||
if sym and isinstance(sym.type, Instance) and len(sym.type.args) > 0:
|
||||
referred_to = sym.type.args[1]
|
||||
if isinstance(referred_to, AnyType):
|
||||
return AnyType(TypeOfAny.implementation_artifact)
|
||||
|
||||
model_type = _extract_referred_to_type_info(referred_to)
|
||||
if model_type is None:
|
||||
return AnyType(TypeOfAny.implementation_artifact)
|
||||
|
||||
primary_key_type = helpers.extract_primary_key_type_for_get(model_type)
|
||||
if primary_key_type:
|
||||
return primary_key_type
|
||||
|
||||
is_nullable = helpers.is_field_nullable(ctx.type.type, field_name)
|
||||
if is_nullable:
|
||||
return helpers.make_optional(ctx.default_attr_type)
|
||||
|
||||
return ctx.default_attr_type
|
||||
|
||||
|
||||
def determine_type_of_related_manager(ctx: AttributeContext, related_manager_name: str) -> Type:
|
||||
if not isinstance(ctx.type, Instance):
|
||||
return ctx.default_attr_type
|
||||
|
||||
related_manager_type = helpers.get_related_manager_type_from_metadata(ctx.type.type,
|
||||
related_manager_name, ctx.api)
|
||||
if not related_manager_type:
|
||||
return ctx.default_attr_type
|
||||
|
||||
return related_manager_type
|
||||
@@ -1,81 +0,0 @@
|
||||
from typing import TYPE_CHECKING, List, Optional, cast
|
||||
|
||||
from mypy.checkexpr import FunctionContext
|
||||
from mypy.checkmember import AttributeContext
|
||||
from mypy.nodes import NameExpr, StrExpr, SymbolTableNode, TypeInfo
|
||||
from mypy.types import AnyType, Instance, Type, TypeOfAny, TypeType
|
||||
|
||||
from mypy_django_plugin.lib import helpers
|
||||
|
||||
if TYPE_CHECKING:
|
||||
from mypy.checker import TypeChecker
|
||||
|
||||
|
||||
def get_setting_sym(name: str, api: 'TypeChecker', settings_modules: List[str]) -> Optional[SymbolTableNode]:
|
||||
for settings_mod_name in settings_modules:
|
||||
if settings_mod_name not in api.modules:
|
||||
continue
|
||||
|
||||
file = api.modules[settings_mod_name]
|
||||
sym = file.names.get(name)
|
||||
if sym is not None:
|
||||
return sym
|
||||
|
||||
return None
|
||||
|
||||
|
||||
def get_type_of_setting(ctx: AttributeContext, setting_name: str,
|
||||
settings_modules: List[str], ignore_missing_settings: bool) -> Type:
|
||||
setting_sym = get_setting_sym(setting_name, ctx.api, settings_modules)
|
||||
if setting_sym:
|
||||
if setting_sym.type is None:
|
||||
# TODO: defer till setting_sym.type is not None
|
||||
return AnyType(TypeOfAny.implementation_artifact)
|
||||
|
||||
return setting_sym.type
|
||||
|
||||
if not ignore_missing_settings:
|
||||
ctx.api.fail(f"'Settings' object has no attribute {setting_name!r}", ctx.context)
|
||||
|
||||
return ctx.default_attr_type
|
||||
|
||||
|
||||
def return_user_model_hook(ctx: FunctionContext, settings_modules: List[str]) -> Type:
|
||||
from mypy.checker import TypeChecker
|
||||
|
||||
api = cast(TypeChecker, ctx.api)
|
||||
|
||||
setting_sym = get_setting_sym('AUTH_USER_MODEL', api, settings_modules)
|
||||
if setting_sym is None:
|
||||
return ctx.default_return_type
|
||||
|
||||
setting_module_name, _, _ = setting_sym.fullname.rpartition('.')
|
||||
setting_module = api.modules[setting_module_name]
|
||||
|
||||
model_path = None
|
||||
for name_expr, rvalue_expr in helpers.iter_over_assignments_in_class(setting_module):
|
||||
if isinstance(name_expr, NameExpr) and isinstance(rvalue_expr, StrExpr):
|
||||
if name_expr.name == 'AUTH_USER_MODEL':
|
||||
model_path = rvalue_expr.value
|
||||
break
|
||||
|
||||
if not model_path:
|
||||
return ctx.default_return_type
|
||||
|
||||
app_label, _, model_class_name = model_path.rpartition('.')
|
||||
if app_label is None:
|
||||
return ctx.default_return_type
|
||||
|
||||
model_fullname = helpers.get_model_fullname(app_label, model_class_name,
|
||||
all_modules=api.modules)
|
||||
if model_fullname is None:
|
||||
api.fail(f'"{app_label}.{model_class_name}" model class is not imported so far. Try to import it '
|
||||
f'(under if TYPE_CHECKING) at the beginning of the current file',
|
||||
context=ctx.context)
|
||||
return ctx.default_return_type
|
||||
|
||||
model_info = helpers.lookup_fully_qualified_generic(model_fullname,
|
||||
all_modules=api.modules)
|
||||
if model_info is None or not isinstance(model_info, TypeInfo):
|
||||
return ctx.default_return_type
|
||||
return TypeType(Instance(model_info, []))
|
||||
Reference in New Issue
Block a user