mirror of
https://github.com/davidhalter/django-stubs.git
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43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
from typing import Optional, Any, cast
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from mypy.nodes import Var, Context, GDEF
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from mypy.options import Options
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from mypy.plugin import ClassDefContext
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from mypy.semanal import SemanticAnalyzerPass2
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from mypy.types import Instance
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def add_settings_to_django_conf_object(ctx: ClassDefContext,
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settings_module: str) -> Optional[Any]:
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api = cast(SemanticAnalyzerPass2, ctx.api)
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if settings_module not in api.modules:
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return None
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settings_file = api.modules[settings_module]
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for name, sym in settings_file.names.items():
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if name.isupper():
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if not isinstance(sym.node, Var) or not isinstance(sym.type, Instance):
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error_context = Context()
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error_context.set_line(sym.node)
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api.msg.fail("Need type annotation for '{}'".format(sym.node.name()),
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context=error_context,
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file=settings_file.path,
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origin=Context())
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continue
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sym_copy = sym.copy()
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sym_copy.node.info = sym_copy.type.type
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sym_copy.kind = GDEF
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ctx.cls.info.names[name] = sym_copy
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class DjangoConfSettingsInitializerHook(object):
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def __init__(self, settings_module: str):
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self.settings_module = settings_module
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def __call__(self, ctx: ClassDefContext) -> None:
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if not self.settings_module:
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return
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add_settings_to_django_conf_object(ctx, self.settings_module)
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