# -*- mode: python; coding: utf-8 -*-
# Copyright (C) 2015, 2017-2019  Laboratoire de Recherche et Développement
# de l'Epita
#
# 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/>.

import spot

f = spot.formula('GF(a & b) -> (FG(a & b) & Gc)')
m = spot.relabeling_map()
g = spot.relabel_bse(f, spot.Pnn, m)
res = ""
for old, new in m.items():
    res += "#define {} {}\n".format(old, new)
res += str(g)
print(res)
assert(res == """#define p0 a & b
#define p1 c
GFp0 -> (FGp0 & Gp1)""")

h = spot.relabel_apply(g, m)
assert h == f

autg = g.translate()
spot.relabel_here(autg, m)
assert str(autg.ap()) == \
    '(spot.formula("a"), spot.formula("b"), spot.formula("c"))'
assert spot.isomorphism_checker.are_isomorphic(autg, f.translate())

a = spot.formula('a')
u = spot.formula('a U b')
m[a] = u
try:
    spot.relabel_here(autg, m)
except RuntimeError as e:
    assert "new labels" in str(e)

m = spot.relabeling_map()
m[u] = a
try:
    spot.relabel_here(autg, m)
except RuntimeError as e:
    assert "old labels" in str(e)