Tipragot
628be439b8
Cela permet de ne pas avoir de problèmes de compatibilité car python est dans le git.
97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
# 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 context, inference_tip, nodes
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from astroid.brain.helpers import register_module_extender
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from astroid.builder import _extract_single_node, parse
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from astroid.const import PY39_PLUS
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from astroid.manager import AstroidManager
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def _regex_transform() -> nodes.Module:
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"""The RegexFlag enum exposes all its entries by updating globals().
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We hard-code the flags for now.
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# pylint: disable-next=line-too-long
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See https://github.com/mrabarnett/mrab-regex/blob/2022.10.31/regex_3/regex.py#L200
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"""
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return parse(
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"""
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A = ASCII = 0x80 # Assume ASCII locale.
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B = BESTMATCH = 0x1000 # Best fuzzy match.
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D = DEBUG = 0x200 # Print parsed pattern.
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E = ENHANCEMATCH = 0x8000 # Attempt to improve the fit after finding the first
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# fuzzy match.
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F = FULLCASE = 0x4000 # Unicode full case-folding.
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I = IGNORECASE = 0x2 # Ignore case.
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L = LOCALE = 0x4 # Assume current 8-bit locale.
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M = MULTILINE = 0x8 # Make anchors look for newline.
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P = POSIX = 0x10000 # POSIX-style matching (leftmost longest).
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R = REVERSE = 0x400 # Search backwards.
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S = DOTALL = 0x10 # Make dot match newline.
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U = UNICODE = 0x20 # Assume Unicode locale.
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V0 = VERSION0 = 0x2000 # Old legacy behaviour.
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DEFAULT_VERSION = V0
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V1 = VERSION1 = 0x100 # New enhanced behaviour.
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W = WORD = 0x800 # Default Unicode word breaks.
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X = VERBOSE = 0x40 # Ignore whitespace and comments.
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T = TEMPLATE = 0x1 # Template (present because re module has it).
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"""
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)
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CLASS_GETITEM_TEMPLATE = """
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@classmethod
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def __class_getitem__(cls, item):
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return cls
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"""
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def _looks_like_pattern_or_match(node: nodes.Call) -> bool:
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"""Check for regex.Pattern or regex.Match call in stdlib.
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Match these patterns from stdlib/re.py
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```py
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Pattern = type(...)
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Match = type(...)
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```
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"""
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return (
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node.root().name == "regex.regex"
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and isinstance(node.func, nodes.Name)
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and node.func.name == "type"
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and isinstance(node.parent, nodes.Assign)
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and len(node.parent.targets) == 1
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and isinstance(node.parent.targets[0], nodes.AssignName)
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and node.parent.targets[0].name in {"Pattern", "Match"}
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)
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def infer_pattern_match(node: nodes.Call, ctx: context.InferenceContext | None = None):
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"""Infer regex.Pattern and regex.Match as classes.
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For PY39+ add `__class_getitem__`.
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"""
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class_def = nodes.ClassDef(
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name=node.parent.targets[0].name,
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lineno=node.lineno,
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col_offset=node.col_offset,
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parent=node.parent,
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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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if PY39_PLUS:
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func_to_add = _extract_single_node(CLASS_GETITEM_TEMPLATE)
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class_def.locals["__class_getitem__"] = [func_to_add]
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return iter([class_def])
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def register(manager: AstroidManager) -> None:
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register_module_extender(manager, "regex", _regex_transform)
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manager.register_transform(
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nodes.Call, inference_tip(infer_pattern_match), _looks_like_pattern_or_match
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)
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