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python: add bindings for bdd_to_formula()

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Follow-up to an email from Ayrat Khalimov.

* python/spot/impl.i: Include twa/formula2bdd.hh.
* python/spot/__init__.py: Make the dictionnary
optional.
* spot/twa/formula2bdd.cc: Throw an exception instead of asserting.
* tests/python/bdditer.py: New file.
* tests/Makefile.am: Add it.
* NEWS: Update.
This commit is contained in:
Alexandre Duret-Lutz 2017-03-08 15:18:49 +01:00
parent df44616dfd
commit 4e9303e380
6 changed files with 78 additions and 3 deletions
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9
spot/twa/formula2bdd.cc
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@ -1,6 +1,6 @@
// -*- coding: utf-8 -*-
// Copyright (C) 2009, 2010, 2012, 2014, 2015 Laboratoire de Recherche
// et Développement de l'Epita (LRDE).
// Copyright (C) 2009-2017 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
// Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris
// 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
// Université Pierre et Marie Curie.
@ -39,7 +39,10 @@ namespace spot
{
int var = bdd_var(b);
const bdd_dict::bdd_info& i = d->bdd_map[var];
assert(i.type == bdd_dict::var);
if (SPOT_UNLIKELY(i.type != bdd_dict::var))
throw std::runtime_error("bdd_to_formula() was passed a bdd"
" with a variable that is not in "
"the dictionary");
formula res = i.f;
bdd high = bdd_high(b);