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# Copyright: 2005 Gentoo Foundation
# Author(s): Brian Harring (ferringb@gentoo.org)
# License: GPL2
# $Header: /local/data/ulm/cvs/history/var/cvsroot/gentoo-src/portage/portage/restrictions/Attic/restrictionSet.py,v 1.7 2005/07/27 02:34:30 ferringb Exp $
import restriction
class RestrictionSet(restriction.base):
__slots__ = tuple(["restrictions"] + restriction.base.__slots__)
def __init__(self, *restrictions, **kwds):
if "finalize" in kwds:
finalize = kdws["finalize"]
del kwds["finalize"]
else:
finalize = False
super(RestrictionSet, self).__init__(**kwds)
for x in restrictions:
if not isinstance(x, restriction.base):
#bad monkey.
raise TypeError, x
if finalize:
self.restrictions = tuple(restrictions)
else:
self.restrictions = list(restrictions)
def add_restriction(self, NewRestriction, strict=True):
if strict and not isinstance(NewRestriction, restriction.base):
raise TypeError, NewRestriction
self.restrictions.append(NewRestriction)
def finalize(self):
self.restrictions = tuple(self.restrictions)
class AndRestrictionSet(RestrictionSet):
__slots__ = tuple(RestrictionSet.__slots__)
def match(self, packagedataInstance):
for rest in self.restrictions:
if not rest.match(packagedataInstance):
return self.negate
return not self.negate
# def intersect(self, other):
class OrRestrictionSet(RestrictionSet):
__slots__ = tuple(RestrictionSet.__slots__)
def match(self, packagedataInstance):
for rest in self.restrictions:
if rest.match(packagedataInstance):
return self.negate
return not self.negate
class XorRestrictionSet(RestrictionSet):
__slots__ = tuple(RestrictionSet.__slots__)
def match(self, pkginst):
armed = False
for rest in self.restrictions:
if rest.match(pkginst):
if armed:
return self.negate
armed = True
return armed ^ self.negate
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