def immutable_unique_id(self, space):
if self.w_instance is not None:
return W_Root.immutable_unique_id(self, space)
# the special-case is only for *unbound* method objects
#
from pypy.objspace.std.util import IDTAG_UNBOUND_METHOD as tag
from pypy.objspace.std.util import IDTAG_SHIFT
id = space.bigint_w(space.id(self.w_function))
id = id.lshift(LONG_BIT).or_(space.bigint_w(space.id(self.w_class)))
id = id.lshift(IDTAG_SHIFT).int_or_(tag)
return space.newlong_from_rbigint(id)
