0745e735bb
* python/spot/impl.i (formula_from_bdd): Instantiate for twa_graph. * spot/twa/twa.hh (register_aps_from_dict): Typo in exception. * tests/python/except.py: More tests for the above. * tests/python/bdddict.py: Typo in comment.
144 lines
3.1 KiB
Python
144 lines
3.1 KiB
Python
# -*- mode: python; coding: utf-8 -*-
|
|
# Copyright (C) 2019, 2021, 2022 Laboratoire de Recherche et
|
|
# Développement de l'Epita (LRDE).
|
|
#
|
|
# This file is part of Spot, a model checking library.
|
|
#
|
|
# Spot 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.
|
|
#
|
|
# Spot 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# Make sure we can keep track of BDD association in Python using bdd_dict, as
|
|
# discussed in (deleted???) issue #372.
|
|
|
|
# CPython use reference counting, so that automata are destructed
|
|
# when we expect them to be. However other implementations like
|
|
# PyPy may call destructors latter, causing different output.
|
|
from platform import python_implementation
|
|
if python_implementation() == 'CPython':
|
|
def gcollect():
|
|
pass
|
|
else:
|
|
import gc
|
|
def gcollect():
|
|
gc.collect()
|
|
|
|
import spot
|
|
from unittest import TestCase
|
|
tc = TestCase()
|
|
|
|
|
|
class bdd_holder:
|
|
def __init__(self, aut):
|
|
self.bdddict = d = aut.get_dict()
|
|
for ap in aut.ap():
|
|
d.register_proposition(ap, self)
|
|
|
|
def __del__(self):
|
|
self.bdddict.unregister_all_my_variables(self)
|
|
|
|
|
|
class bdd_holder2:
|
|
def __init__(self, aut):
|
|
self.bdddict = d = aut.get_dict()
|
|
d.register_all_variables_of(aut, self)
|
|
|
|
def __del__(self):
|
|
self.bdddict.unregister_all_my_variables(self)
|
|
|
|
|
|
class bdd_holder3:
|
|
def __init__(self, h2):
|
|
self.bdddict = d = h2.bdddict
|
|
d.register_all_variables_of(h2, self)
|
|
|
|
def __del__(self):
|
|
self.bdddict.unregister_all_my_variables(self)
|
|
|
|
|
|
def check_ok():
|
|
tc.assertIs(type(bdict.varnum(spot.formula.ap("a"))), int)
|
|
|
|
|
|
def check_nok():
|
|
try:
|
|
bdict.varnum(spot.formula.ap("a"))
|
|
except IndexError as e:
|
|
pass
|
|
else:
|
|
raise RuntimeError("missing exception")
|
|
|
|
|
|
def debug(txt):
|
|
# print(txt)
|
|
# bdict.dump(spot.get_cout())
|
|
pass
|
|
|
|
|
|
aut = spot.translate("a U b")
|
|
bdict = aut.get_dict()
|
|
debug("aut")
|
|
|
|
word = aut.accepting_word()
|
|
debug("word")
|
|
check_ok()
|
|
|
|
h = bdd_holder(aut)
|
|
debug("h")
|
|
check_ok()
|
|
|
|
h2 = bdd_holder2(aut)
|
|
debug("h2")
|
|
check_ok()
|
|
|
|
del aut
|
|
gcollect()
|
|
debug("-aut")
|
|
check_ok()
|
|
|
|
del word
|
|
gcollect()
|
|
debug("-word")
|
|
check_ok()
|
|
|
|
del h
|
|
gcollect()
|
|
debug("-h")
|
|
check_ok()
|
|
|
|
del h2
|
|
gcollect()
|
|
debug("-h2")
|
|
check_nok()
|
|
|
|
h2 = bdd_holder2(spot.translate("a U b").accepting_word())
|
|
debug("h2")
|
|
h3 = bdd_holder3(h2)
|
|
var = bdict.register_anonymous_variables(1, h3)
|
|
debug("h3")
|
|
tc.assertEqual(var, 2)
|
|
del h2
|
|
gcollect()
|
|
debug("-h2")
|
|
check_ok()
|
|
del h3
|
|
gcollect()
|
|
debug("-h3")
|
|
check_nok()
|
|
|
|
h2 = bdd_holder2(spot.translate("a U b").accepting_word())
|
|
debug("h2")
|
|
bdict.unregister_variable(bdict.varnum("b"), h2)
|
|
bdict.unregister_variable(bdict.varnum("a"), h2)
|
|
debug("-b,-a")
|
|
gcollect()
|
|
check_nok()
|