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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
# Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt
"""Check for use of while loops."""
from __future__ import annotations
from typing import TYPE_CHECKING
from astroid import nodes
from pylint.checkers import BaseChecker
from pylint.checkers.utils import only_required_for_messages
if TYPE_CHECKING:
from pylint.lint import PyLinter
class WhileChecker(BaseChecker):
name = "while_used"
msgs = {
"W0149": (
"Used `while` loop",
"while-used",
"Unbounded `while` loops can often be rewritten as bounded `for` loops. "
"Exceptions can be made for cases such as event loops, listeners, etc.",
)
}
@only_required_for_messages("while-used")
def visit_while(self, node: nodes.While) -> None:
self.add_message("while-used", node=node)
def register(linter: PyLinter) -> None:
linter.register_checker(WhileChecker(linter))