mirror of
https://github.com/home-assistant/core
synced 2024-09-06 10:29:55 +02:00
52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
"""Plugin for constructor definitions."""
|
|
from __future__ import annotations
|
|
|
|
from astroid import nodes
|
|
from pylint.checkers import BaseChecker
|
|
from pylint.lint import PyLinter
|
|
|
|
|
|
class HassConstructorFormatChecker(BaseChecker): # type: ignore[misc]
|
|
"""Checker for __init__ definitions."""
|
|
|
|
name = "hass_constructor"
|
|
priority = -1
|
|
msgs = {
|
|
"W7411": (
|
|
'__init__ should have explicit return type "None"',
|
|
"hass-constructor-return",
|
|
"Used when __init__ has all arguments typed "
|
|
"but doesn't have return type declared",
|
|
),
|
|
}
|
|
options = ()
|
|
|
|
def visit_functiondef(self, node: nodes.FunctionDef) -> None:
|
|
"""Called when a FunctionDef node is visited."""
|
|
if not node.is_method() or node.name != "__init__":
|
|
return
|
|
|
|
# Check that all arguments are annotated.
|
|
# The first argument is "self".
|
|
args = node.args
|
|
annotations = (
|
|
args.posonlyargs_annotations
|
|
+ args.annotations
|
|
+ args.kwonlyargs_annotations
|
|
)[1:]
|
|
if args.vararg is not None:
|
|
annotations.append(args.varargannotation)
|
|
if args.kwarg is not None:
|
|
annotations.append(args.kwargannotation)
|
|
if not annotations or None in annotations:
|
|
return
|
|
|
|
# Check that return type is specified and it is "None".
|
|
if not isinstance(node.returns, nodes.Const) or node.returns.value is not None:
|
|
self.add_message("hass-constructor-return", node=node)
|
|
|
|
|
|
def register(linter: PyLinter) -> None:
|
|
"""Register the checker."""
|
|
linter.register_checker(HassConstructorFormatChecker(linter))
|