mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-11-10 17:27:47 +01:00
91 lines
3.4 KiB
Python
91 lines
3.4 KiB
Python
|
# Copyright (c) 2015-2018, 2020 Claudiu Popa <pcmanticore@gmail.com>
|
||
|
|
# Copyright (c) 2017 Derek Gustafson <degustaf@gmail.com>
|
||
|
|
# Copyright (c) 2019 Pierre Sassoulas <pierre.sassoulas@gmail.com>
|
||
|
|
|
||
|
|
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
||
|
|
# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
|
||
|
|
|
||
|
|
"""Checker for anything related to the async protocol (PEP 492)."""
|
||
|
|
|
||
|
|
import sys
|
||
|
|
|
||
|
|
import astroid
|
||
|
|
from astroid import bases, exceptions
|
||
|
|
|
||
|
|
from pylint import checkers, interfaces, utils
|
||
|
|
from pylint.checkers import utils as checker_utils
|
||
|
|
from pylint.checkers.utils import decorated_with
|
||
|
|
|
||
|
|
|
||
|
|
class AsyncChecker(checkers.BaseChecker):
|
||
|
|
__implements__ = interfaces.IAstroidChecker
|
||
|
|
name = "async"
|
||
|
|
msgs = {
|
||
|
|
"E1700": (
|
||
|
|
"Yield inside async function",
|
||
|
|
"yield-inside-async-function",
|
||
|
|
"Used when an `yield` or `yield from` statement is "
|
||
|
|
"found inside an async function.",
|
||
|
|
{"minversion": (3, 5)},
|
||
|
|
),
|
||
|
|
"E1701": (
|
||
|
|
"Async context manager '%s' doesn't implement __aenter__ and __aexit__.",
|
||
|
|
"not-async-context-manager",
|
||
|
|
"Used when an async context manager is used with an object "
|
||
|
|
"that does not implement the async context management protocol.",
|
||
|
|
{"minversion": (3, 5)},
|
||
|
|
),
|
||
|
|
}
|
||
|
|
|
||
|
|
def open(self):
|
||
|
|
self._ignore_mixin_members = utils.get_global_option(
|
||
|
|
self, "ignore-mixin-members"
|
||
|
|
)
|
||
|
|
self._async_generators = ["contextlib.asynccontextmanager"]
|
||
|
|
|
||
|
|
@checker_utils.check_messages("yield-inside-async-function")
|
||
|
|
def visit_asyncfunctiondef(self, node):
|
||
|
|
for child in node.nodes_of_class(astroid.Yield):
|
||
|
|
if child.scope() is node and (
|
||
|
|
sys.version_info[:2] == (3, 5) or isinstance(child, astroid.YieldFrom)
|
||
|
|
):
|
||
|
|
self.add_message("yield-inside-async-function", node=child)
|
||
|
|
|
||
|
|
@checker_utils.check_messages("not-async-context-manager")
|
||
|
|
def visit_asyncwith(self, node):
|
||
|
|
for ctx_mgr, _ in node.items:
|
||
|
|
inferred = checker_utils.safe_infer(ctx_mgr)
|
||
|
|
if inferred is None or inferred is astroid.Uninferable:
|
||
|
|
continue
|
||
|
|
|
||
|
|
if isinstance(inferred, bases.AsyncGenerator):
|
||
|
|
# Check if we are dealing with a function decorated
|
||
|
|
# with contextlib.asynccontextmanager.
|
||
|
|
if decorated_with(inferred.parent, self._async_generators):
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
try:
|
||
|
|
inferred.getattr("__aenter__")
|
||
|
|
inferred.getattr("__aexit__")
|
||
|
|
except exceptions.NotFoundError:
|
||
|
|
if isinstance(inferred, astroid.Instance):
|
||
|
|
# If we do not know the bases of this class,
|
||
|
|
# just skip it.
|
||
|
|
if not checker_utils.has_known_bases(inferred):
|
||
|
|
continue
|
||
|
|
# Just ignore mixin classes.
|
||
|
|
if self._ignore_mixin_members:
|
||
|
|
if inferred.name[-5:].lower() == "mixin":
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
continue
|
||
|
|
|
||
|
|
self.add_message(
|
||
|
|
"not-async-context-manager", node=node, args=(inferred.name,)
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def register(linter):
|
||
|
|
"""required method to auto register this checker"""
|
||
|
|
linter.register_checker(AsyncChecker(linter))
|