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Relax usage of ->, <->, and xor in SERE.

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* src/ltlparse/ltlparse.yy (rationalexp): Allow ->, <->, and xor,
in rational expressions as long as they apply only to Boolean
formulae.
* src/tgbaalgos/ltl2tgba_fm.cc (ratexp_trad_visitor): Adjust
assert in handling of unop::Not.
This commit is contained in:
Alexandre Duret-Lutz 2011-02-13 22:29:35 +01:00
parent 8cafa200a5
commit eab91aab68
2 changed files with 111 additions and 15 deletions
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8
src/tgbaalgos/ltl2tgba_fm.cc
View file

@ -1,4 +1,4 @@
// Copyright (C) 2008, 2009, 2010 Laboratoire de Recherche et
// Copyright (C) 2008, 2009, 2010, 2011 Laboratoire de Recherche et
// Développement de l'Epita (LRDE).
// Copyright (C) 2003, 2004, 2005, 2006 Laboratoire
// d'Informatique de Paris 6 (LIP6), département Systèmes Répartis
@ -397,11 +397,11 @@ namespace spot
return;
case unop::Not:
{
// Not can only appear in front of constants or atomic
// Not can only appear in front of Boolean
// expressions.
// propositions.
const formula* f = node->child();
assert(dynamic_cast<const atomic_prop*>(f)
|| dynamic_cast<const constant*>(f));
assert(f->is_boolean());
res_ = recurse_and_concat(f, true);
return;
}