# -*- coding: utf-8 -*-
"option types and option description"
# Copyright (C) 2012-2017 Team tiramisu (see AUTHORS for all contributors)
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# The original `Config` design model is unproudly borrowed from
# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
# the whole pypy projet is under MIT licence
# ____________________________________________________________
from ..setting import undefined

from .baseoption import Option


class _RegexpOption(Option):
    __slots__ = tuple()

    def _validate(self, value, context=undefined, current_opt=undefined):
        err = self._impl_valid_unicode(value)
        if err:
            return err
        match = self._regexp.search(value)
        if not match:
            return ValueError()