# Copyright (C) 2010 Tim Diels <limyreth@users.sourceforge.net>
# 
# This file is part of pytilities.
# 
# pytilities is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# pytilities 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 General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with pytilities.  If not, see <http://www.gnu.org/licenses/>.
#

__docformat__ = 'reStructuredText'

class _Suppressor(object):

    '''
    Remembers to suppress aspects for some objects
    '''

    def __init__(self):
        self._suppressed_aspects = set()

    def suppress(self, aspect, obj):
        self._suppressed_aspects.add((aspect, obj))

    def unsuppress(self, aspect, obj):
        self._suppressed_aspects.remove((aspect, obj))

    def is_suppressed(self, aspect, obj):
        return (aspect, obj) in self._suppressed_aspects
