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Filename : option.py
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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

from __future__ import annotations

import copy
import optparse  # pylint: disable=deprecated-module
import pathlib
import re
import warnings
from collections.abc import Callable, Sequence
from re import Pattern
from typing import Any

from pylint import utils


# pylint: disable=unused-argument
def _csv_validator(
    _: Any, name: str, value: str | list[str] | tuple[str]
) -> Sequence[str]:
    return utils._check_csv(value)


# pylint: disable=unused-argument
def _regexp_validator(
    _: Any, name: str, value: str | re.Pattern[str]
) -> re.Pattern[str]:
    if hasattr(value, "pattern"):
        return value  # type: ignore[return-value]
    return re.compile(value)


# pylint: disable=unused-argument
def _regexp_csv_validator(
    _: Any, name: str, value: str | list[str]
) -> list[re.Pattern[str]]:
    return [_regexp_validator(_, name, val) for val in _csv_validator(_, name, value)]


def _regexp_paths_csv_validator(
    _: Any, name: str, value: str | list[Pattern[str]]
) -> list[Pattern[str]]:
    if isinstance(value, list):
        return value
    patterns = []
    for val in _csv_validator(_, name, value):
        patterns.append(
            re.compile(
                str(pathlib.PureWindowsPath(val)).replace("\\", "\\\\")
                + "|"
                + pathlib.PureWindowsPath(val).as_posix()
            )
        )
    return patterns


def _choice_validator(choices: list[Any], name: str, value: Any) -> Any:
    if value not in choices:
        msg = "option %s: invalid value: %r, should be in %s"
        raise optparse.OptionValueError(msg % (name, value, choices))
    return value


def _yn_validator(opt: str, _: str, value: Any) -> bool:
    if isinstance(value, int):
        return bool(value)
    if isinstance(value, str):
        value = value.lower()
    if value in {"y", "yes", "true"}:
        return True
    if value in {"n", "no", "false"}:
        return False
    msg = "option %s: invalid yn value %r, should be in (y, yes, true, n, no, false)"
    raise optparse.OptionValueError(msg % (opt, value))


def _multiple_choice_validator(choices: list[Any], name: str, value: Any) -> Any:
    values = utils._check_csv(value)
    for csv_value in values:
        if csv_value not in choices:
            msg = "option %s: invalid value: %r, should be in %s"
            raise optparse.OptionValueError(msg % (name, csv_value, choices))
    return values


def _non_empty_string_validator(  # pragma: no cover # Unused
    opt: Any, _: str, value: str
) -> str:
    if not value:
        msg = "indent string can't be empty."
        raise optparse.OptionValueError(msg)
    return utils._unquote(value)


def _multiple_choices_validating_option(  # pragma: no cover # Unused
    opt: optparse.Option, name: str, value: Any
) -> Any:
    return _multiple_choice_validator(
        opt.choices, name, value  # type: ignore[attr-defined]
    )


def _py_version_validator(_: Any, name: str, value: Any) -> tuple[int, int, int]:
    if not isinstance(value, tuple):
        try:
            value = tuple(int(val) for val in value.split("."))
        except (ValueError, AttributeError):
            raise optparse.OptionValueError(
                f"Invalid format for {name}, should be version string. E.g., '3.8'"
            ) from None
    return value  # type: ignore[no-any-return]


VALIDATORS: dict[str, Callable[[Any, str, Any], Any] | Callable[[Any], Any]] = {
    "string": utils._unquote,
    "int": int,
    "float": float,
    "glob_paths_csv": _csv_validator,
    "regexp": lambda pattern: re.compile(pattern or ""),
    "regexp_csv": _regexp_csv_validator,
    "regexp_paths_csv": _regexp_paths_csv_validator,
    "csv": _csv_validator,
    "yn": _yn_validator,
    "choice": lambda opt, name, value: _choice_validator(opt["choices"], name, value),
    "confidence": lambda opt, name, value: _multiple_choice_validator(
        opt["choices"], name, value
    ),
    "multiple_choice": lambda opt, name, value: _multiple_choice_validator(
        opt["choices"], name, value
    ),
    "non_empty_string": _non_empty_string_validator,
    "py_version": _py_version_validator,
}


def _call_validator(opttype: str, optdict: Any, option: str, value: Any) -> Any:
    if opttype not in VALIDATORS:
        raise TypeError(f'Unsupported type "{opttype}"')
    try:
        return VALIDATORS[opttype](optdict, option, value)  # type: ignore[call-arg]
    except TypeError:
        try:
            return VALIDATORS[opttype](value)  # type: ignore[call-arg]
        except Exception as e:
            raise optparse.OptionValueError(
                f"{option} value ({value!r}) should be of type {opttype}"
            ) from e


def _validate(value: Any, optdict: Any, name: str = "") -> Any:
    """Return a validated value for an option according to its type.

    optional argument name is only used for error message formatting
    """
    try:
        _type = optdict["type"]
    except KeyError:
        return value
    return _call_validator(_type, optdict, name, value)


# pylint: disable=no-member
class Option(optparse.Option):
    TYPES = optparse.Option.TYPES + (
        "glob_paths_csv",
        "regexp",
        "regexp_csv",
        "regexp_paths_csv",
        "csv",
        "yn",
        "confidence",
        "multiple_choice",
        "non_empty_string",
        "py_version",
    )
    ATTRS = optparse.Option.ATTRS + ["hide", "level"]
    TYPE_CHECKER = copy.copy(optparse.Option.TYPE_CHECKER)
    TYPE_CHECKER["glob_paths_csv"] = _csv_validator
    TYPE_CHECKER["regexp"] = _regexp_validator
    TYPE_CHECKER["regexp_csv"] = _regexp_csv_validator
    TYPE_CHECKER["regexp_paths_csv"] = _regexp_paths_csv_validator
    TYPE_CHECKER["csv"] = _csv_validator
    TYPE_CHECKER["yn"] = _yn_validator
    TYPE_CHECKER["confidence"] = _multiple_choices_validating_option
    TYPE_CHECKER["multiple_choice"] = _multiple_choices_validating_option
    TYPE_CHECKER["non_empty_string"] = _non_empty_string_validator
    TYPE_CHECKER["py_version"] = _py_version_validator

    def __init__(self, *opts: Any, **attrs: Any) -> None:
        # TODO: 3.0: Remove deprecated class
        warnings.warn(
            "Option has been deprecated and will be removed in pylint 3.0",
            DeprecationWarning,
            stacklevel=2,
        )
        super().__init__(*opts, **attrs)
        if hasattr(self, "hide") and self.hide:
            self.help = optparse.SUPPRESS_HELP

    def _check_choice(self) -> None:
        if self.type in {"choice", "multiple_choice", "confidence"}:
            if self.choices is None:  # type: ignore[attr-defined]
                raise optparse.OptionError(
                    "must supply a list of choices for type 'choice'", self
                )
            if not isinstance(self.choices, (tuple, list)):  # type: ignore[attr-defined]
                raise optparse.OptionError(
                    # pylint: disable-next=consider-using-f-string
                    "choices must be a list of strings ('%s' supplied)"
                    % str(type(self.choices)).split("'")[1],  # type: ignore[attr-defined]
                    self,
                )
        elif self.choices is not None:  # type: ignore[attr-defined]
            raise optparse.OptionError(
                f"must not supply choices for type {self.type!r}", self
            )

    optparse.Option.CHECK_METHODS[2] = _check_choice  # type: ignore[index]

    def process(  # pragma: no cover # Argparse
        self, opt: Any, value: Any, values: Any, parser: Any
    ) -> int:
        assert isinstance(self.dest, str)
        if self.callback and self.callback.__module__ == "pylint.lint.run":
            return 1
        # First, convert the value(s) to the right type.  Howl if any
        # value(s) are bogus.
        value = self.convert_value(opt, value)
        if self.type == "named":
            existent = getattr(values, self.dest)
            if existent:
                existent.update(value)
                value = existent
        # And then take whatever action is expected of us.
        # This is a separate method to make life easier for
        # subclasses to add new actions.
        return self.take_action(self.action, self.dest, opt, value, values, parser)