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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
# pylint: disable=too-many-arguments, redefined-builtin, duplicate-code
"""Callback actions for various options."""
from __future__ import annotations
import abc
import argparse
import sys
import warnings
from collections.abc import Callable, Sequence
from pathlib import Path
from typing import TYPE_CHECKING, Any
from pylint import exceptions, extensions, interfaces, utils
if TYPE_CHECKING:
from pylint.config.help_formatter import _HelpFormatter
from pylint.lint import PyLinter
from pylint.lint.run import Run
class _CallbackAction(argparse.Action):
"""Custom callback action."""
@abc.abstractmethod
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = None,
) -> None:
raise NotImplementedError # pragma: no cover
class _DoNothingAction(_CallbackAction):
"""Action that just passes.
This action is used to allow pre-processing of certain options
without erroring when they are then processed again by argparse.
"""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = None,
) -> None:
return None
class _ExtendAction(argparse._AppendAction):
"""Action that adds the value to a pre-existing list.
It is directly copied from the stdlib implementation which is only available
on 3.8+.
"""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = None,
) -> None:
assert isinstance(values, (tuple, list))
current = getattr(namespace, self.dest, [])
assert isinstance(current, list)
current.extend(values)
setattr(namespace, self.dest, current)
class _AccessRunObjectAction(_CallbackAction):
"""Action that has access to the Run object."""
def __init__(
self,
option_strings: Sequence[str],
dest: str,
nargs: None = None,
const: None = None,
default: None = None,
type: None = None,
choices: None = None,
required: bool = False,
help: str = "",
metavar: str = "",
**kwargs: Run,
) -> None:
self.run = kwargs["Run"]
super().__init__(
option_strings,
dest,
0,
const,
default,
type,
choices,
required,
help,
metavar,
)
@abc.abstractmethod
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = None,
) -> None:
raise NotImplementedError # pragma: no cover
class _MessageHelpAction(_CallbackAction):
"""Display the help message of a message."""
def __init__(
self,
option_strings: Sequence[str],
dest: str,
nargs: None = None,
const: None = None,
default: None = None,
type: None = None,
choices: None = None,
required: bool = False,
help: str = "",
metavar: str = "",
**kwargs: Run,
) -> None:
self.run = kwargs["Run"]
super().__init__(
option_strings,
dest,
"+",
const,
default,
type,
choices,
required,
help,
metavar,
)
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[str] | None,
option_string: str | None = "--help-msg",
) -> None:
assert isinstance(values, (list, tuple))
values_to_print: list[str] = []
for msg in values:
assert isinstance(msg, str)
values_to_print += utils._check_csv(msg)
self.run.linter.msgs_store.help_message(values_to_print)
sys.exit(0)
class _ListMessagesAction(_AccessRunObjectAction):
"""Display all available messages."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--list-enabled",
) -> None:
self.run.linter.msgs_store.list_messages()
sys.exit(0)
class _ListMessagesEnabledAction(_AccessRunObjectAction):
"""Display all enabled messages."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--list-msgs-enabled",
) -> None:
self.run.linter.list_messages_enabled()
sys.exit(0)
class _ListCheckGroupsAction(_AccessRunObjectAction):
"""Display all the check groups that pylint knows about."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--list-groups",
) -> None:
for check in self.run.linter.get_checker_names():
print(check)
sys.exit(0)
class _ListConfidenceLevelsAction(_AccessRunObjectAction):
"""Display all the confidence levels that pylint knows about."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--list-conf-levels",
) -> None:
for level in interfaces.CONFIDENCE_LEVELS:
print(f"%-18s: {level}")
sys.exit(0)
class _ListExtensionsAction(_AccessRunObjectAction):
"""Display all extensions under pylint.extensions."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--list-extensions",
) -> None:
for filename in Path(extensions.__file__).parent.iterdir():
if filename.suffix == ".py" and not filename.stem.startswith("_"):
extension_name, _, _ = filename.stem.partition(".")
print(f"pylint.extensions.{extension_name}")
sys.exit(0)
class _FullDocumentationAction(_AccessRunObjectAction):
"""Display the full documentation."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--full-documentation",
) -> None:
utils.print_full_documentation(self.run.linter)
sys.exit(0)
class _GenerateRCFileAction(_AccessRunObjectAction):
"""Generate a pylintrc file."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--generate-rcfile",
) -> None:
# TODO: 2.x: Deprecate this after the auto-upgrade functionality of
# pylint-config is sufficient.
with warnings.catch_warnings():
warnings.filterwarnings("ignore", category=DeprecationWarning)
self.run.linter.generate_config(skipsections=("Commands",))
sys.exit(0)
class _GenerateConfigFileAction(_AccessRunObjectAction):
"""Generate a .toml format configuration file."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--generate-toml-config",
) -> None:
print(self.run.linter._generate_config_file())
sys.exit(0)
class _ErrorsOnlyModeAction(_AccessRunObjectAction):
"""Turn on errors-only mode.
Error mode:
* disable all but error messages
* disable the 'miscellaneous' checker which can be safely deactivated in
debug
* disable reports
* do not save execution information
"""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--errors-only",
) -> None:
self.run.linter._error_mode = True
class _LongHelpAction(_AccessRunObjectAction):
"""Display the long help message."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--long-help",
) -> None:
formatter: _HelpFormatter = self.run.linter._arg_parser._get_formatter() # type: ignore[assignment]
# Add extra info as epilog to the help message
self.run.linter._arg_parser.epilog = formatter.get_long_description()
print(self.run.linter.help())
sys.exit(0)
class _AccessLinterObjectAction(_CallbackAction):
"""Action that has access to the Linter object."""
def __init__(
self,
option_strings: Sequence[str],
dest: str,
nargs: None = None,
const: None = None,
default: None = None,
type: None = None,
choices: None = None,
required: bool = False,
help: str = "",
metavar: str = "",
**kwargs: PyLinter,
) -> None:
self.linter = kwargs["linter"]
super().__init__(
option_strings,
dest,
1,
const,
default,
type,
choices,
required,
help,
metavar,
)
@abc.abstractmethod
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = None,
) -> None:
raise NotImplementedError # pragma: no cover
class _XableAction(_AccessLinterObjectAction):
"""Callback action for enabling or disabling a message."""
def _call(
self,
xabling_function: Callable[[str], None],
values: str | Sequence[Any] | None,
option_string: str | None,
) -> None:
assert isinstance(values, (tuple, list))
for msgid in utils._check_csv(values[0]):
try:
xabling_function(msgid)
except (
exceptions.DeletedMessageError,
exceptions.MessageBecameExtensionError,
) as e:
self.linter._stashed_messages[
(self.linter.current_name, "useless-option-value")
].append((option_string, str(e)))
except exceptions.UnknownMessageError:
self.linter._stashed_messages[
(self.linter.current_name, "unknown-option-value")
].append((option_string, msgid))
@abc.abstractmethod
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--disable",
) -> None:
raise NotImplementedError # pragma: no cover
class _DisableAction(_XableAction):
"""Callback action for disabling a message."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--disable",
) -> None:
self._call(self.linter.disable, values, option_string)
class _EnableAction(_XableAction):
"""Callback action for enabling a message."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--enable",
) -> None:
self._call(self.linter.enable, values, option_string)
class _OutputFormatAction(_AccessLinterObjectAction):
"""Callback action for setting the output format."""
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = "--enable",
) -> None:
assert isinstance(values, (tuple, list))
assert isinstance(
values[0], str
), "'output-format' should be a comma separated string of reporters"
self.linter._load_reporters(values[0])
class _AccessParserAction(_CallbackAction):
"""Action that has access to the ArgumentParser object."""
def __init__(
self,
option_strings: Sequence[str],
dest: str,
nargs: None = None,
const: None = None,
default: None = None,
type: None = None,
choices: None = None,
required: bool = False,
help: str = "",
metavar: str = "",
**kwargs: argparse.ArgumentParser,
) -> None:
self.parser = kwargs["parser"]
super().__init__(
option_strings,
dest,
0,
const,
default,
type,
choices,
required,
help,
metavar,
)
@abc.abstractmethod
def __call__(
self,
parser: argparse.ArgumentParser,
namespace: argparse.Namespace,
values: str | Sequence[Any] | None,
option_string: str | None = None,
) -> None:
raise NotImplementedError # pragma: no cover
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