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# SPDX-FileCopyrightText: Florian Bruhin (The Compiler) <mail@qutebrowser.org>
#
# SPDX-License-Identifier: GPL-3.0-or-later
"""Custom astroid checker for config calls."""
import sys
import pathlib
import yaml
import astroid
from pylint import interfaces, checkers
from pylint.checkers import utils
OPTIONS = None
FAILED_LOAD = False
class ConfigChecker(checkers.BaseChecker):
"""Custom astroid checker for config calls."""
__implements__ = interfaces.IAstroidChecker
name = 'config'
msgs = {
'E9998': ('%s is no valid config option.', # flake8: disable=S001
'bad-config-option',
None),
}
priority = -1
printed_warning = False
@utils.check_messages('bad-config-option')
def visit_attribute(self, node):
"""Visit a getattr node."""
# We're only interested in the end of a config.val.foo.bar chain
if isinstance(node.parent, astroid.Attribute):
return
if isinstance(node.parent, astroid.Call):
# Skip dynamic getattr()
func = node.parent.func
if isinstance(func, astroid.Name) and func.name == 'getattr':
return
# Handle .items() / .values()
if node.attrname in ['items', 'values']:
node = node.expr
# FIXME:conf do some proper check for this...
node_str = node.as_string()
prefix = 'config.val.'
if node_str.startswith(prefix):
self._check_config(node, node_str[len(prefix):])
def _check_config(self, node, name):
"""Check that we're accessing proper config options."""
if FAILED_LOAD:
if not ConfigChecker.printed_warning:
print("[WARN] Could not find configdata.yml. Please run "
"pylint from qutebrowser root.", file=sys.stderr)
print("Skipping some checks...", file=sys.stderr)
ConfigChecker.printed_warning = True
return
if name not in OPTIONS:
self.add_message('bad-config-option', node=node, args=name)
def register(linter):
"""Register this checker."""
linter.register_checker(ConfigChecker(linter))
global OPTIONS
global FAILED_LOAD
yaml_file = pathlib.Path('qutebrowser') / 'config' / 'configdata.yml'
if not yaml_file.exists():
OPTIONS = None
FAILED_LOAD = True
return
with yaml_file.open(mode='r', encoding='utf-8') as f:
OPTIONS = list(yaml.safe_load(f))
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