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#._cv_part guppy.sets
from setsc import BitSet # base bitset type
from setsc import ImmBitSet # immutable bitset type
from setsc import immbit # immutable bitset singleton constructor
from setsc import immbitrange # immutable bitset range constructor
from setsc import immbitset # immutable bitset constructor
from setsc import MutBitSet # mutable bitset
from setsc import NodeSet # base nodeset type
from setsc import ImmNodeSet # immmutable nodeset type
from setsc import MutNodeSet # mutable nodeset type
import copy_reg
from setsc import _bs
if hasattr(copy_reg, 'safe_constructors'): # < 2.3 version
copy_reg.safe_constructors[_bs] = 1
else:
# In at least Python 2.3.3, we have to set __module__;
# it didn't find it otherwise.
_bs.__module__ # Due to bug in Python version 2.3.3, we have to read it first..
_bs.__module__= 'guppy.sets' # ..to be able to set it.
del copy_reg
# Define some constructors.
# Constructor names are lower case.
# Some constructors are equal to types.
# But this connection depends on the implementation.
# So one may wish the user to not depend on this.
mutbitset = MutBitSet
immnodeset = ImmNodeSet
mutnodeset = MutNodeSet
def mutnodeset_union(iterable):
"Return a mutable nodeset which is the union of all nodesets in iterable."
set = mutnodeset()
for it in iterable:
set |= it
return set
def immnodeset_union(iterable, *args):
"Return an immmutable nodeset which is the union of all nodesets in iterable."
set = mutnodeset_union(iterable)
return immnodeset(set, *args)
def laxnodeset(v):
"""\
Return a nodeset with elements from the argument. If the argument is
already a nodeset, it self will be returned. Otherwise it will be
converted to a nodeset, that can be mutable or immutable depending on
what happens to be most effectively implemented."""
if not isinstance(v, NodeSet):
v = immnodeset(v)
return v
# Make attributes assignable by reading one;
# this is getting around a bug in Python 2.3.3
# and should be harmless in any version.
try:
mutnodeset()._hiding_tag_
except AttributeError:
pass
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