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- # Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
- # For details: https://github.com/pylint-dev/astroid/blob/main/LICENSE
- # Copyright (c) https://github.com/pylint-dev/astroid/blob/main/CONTRIBUTORS.txt
- from __future__ import annotations
- from astroid import arguments, nodes
- from astroid.context import InferenceContext
- from astroid.exceptions import UseInferenceDefault
- from astroid.inference_tip import inference_tip
- from astroid.manager import AstroidManager
- def infer_namespace(node, context: InferenceContext | None = None):
- callsite = arguments.CallSite.from_call(node, context=context)
- if not callsite.keyword_arguments:
- # Cannot make sense of it.
- raise UseInferenceDefault()
- class_node = nodes.ClassDef(
- "Namespace",
- lineno=node.lineno,
- col_offset=node.col_offset,
- parent=nodes.SYNTHETIC_ROOT, # this class is not real
- end_lineno=node.end_lineno,
- end_col_offset=node.end_col_offset,
- )
- for attr in set(callsite.keyword_arguments):
- fake_node = nodes.EmptyNode()
- fake_node.parent = class_node
- fake_node.attrname = attr
- class_node.instance_attrs[attr] = [fake_node]
- return iter((class_node.instantiate_class(),))
- def _looks_like_namespace(node) -> bool:
- func = node.func
- if isinstance(func, nodes.Attribute):
- return (
- func.attrname == "Namespace"
- and isinstance(func.expr, nodes.Name)
- and func.expr.name == "argparse"
- )
- return False
- def register(manager: AstroidManager) -> None:
- manager.register_transform(
- nodes.Call, inference_tip(infer_namespace), _looks_like_namespace
- )
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