53 lines
1.8 KiB
Python
53 lines
1.8 KiB
Python
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# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
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# For details: https://github.com/pylint-dev/astroid/blob/main/LICENSE
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# Copyright (c) https://github.com/pylint-dev/astroid/blob/main/CONTRIBUTORS.txt
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from __future__ import annotations
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from astroid import arguments, inference_tip, nodes
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from astroid.context import InferenceContext
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from astroid.exceptions import UseInferenceDefault
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from astroid.manager import AstroidManager
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def infer_namespace(node, context: InferenceContext | None = None):
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callsite = arguments.CallSite.from_call(node, context=context)
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if not callsite.keyword_arguments:
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# Cannot make sense of it.
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raise UseInferenceDefault()
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class_node = nodes.ClassDef(
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"Namespace",
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lineno=node.lineno,
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col_offset=node.col_offset,
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parent=nodes.Unknown(),
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end_lineno=node.end_lineno,
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end_col_offset=node.end_col_offset,
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)
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# Set parent manually until ClassDef constructor fixed:
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# https://github.com/pylint-dev/astroid/issues/1490
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class_node.parent = node.parent
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for attr in set(callsite.keyword_arguments):
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fake_node = nodes.EmptyNode()
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fake_node.parent = class_node
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fake_node.attrname = attr
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class_node.instance_attrs[attr] = [fake_node]
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return iter((class_node.instantiate_class(),))
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def _looks_like_namespace(node) -> bool:
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func = node.func
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if isinstance(func, nodes.Attribute):
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return (
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func.attrname == "Namespace"
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and isinstance(func.expr, nodes.Name)
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and func.expr.name == "argparse"
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)
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return False
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def register(manager: AstroidManager) -> None:
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manager.register_transform(
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nodes.Call, inference_tip(infer_namespace), _looks_like_namespace
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)
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