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Add support for {SERE} and !{SERE} closure operators.

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* src/ltlast/unop.hh, src/ltlast/unop.cc: Introduce Closure and
NegClosure operators.
* src/ltlparse/ltlparse.yy: Recognize {foo} as a Closure.
* src/ltlvisit/mark.cc: Consider NegClosure as a marked operator.
* src/tgbaalgos/ltl2tgba_fm.cc (ratexp_trad_visitor): Add option to
select whether the empty_word should act like true (for {SERE}
and {!SERE}) or false (for {SERE}<>->Exp or {SERE}[]->Exp).
(ltl_trad_visitor): Translate Closure and NegClosure.
* src/tgbatest/ltl2tgba.test: Add more tests.
* src/ltlvisit/basicreduce.cc, src/ltlvisit/consterm.cc,
src/ltlvisit/nenoform.cc, src/ltlvisit/reduce.cc,
src/ltlvisit/syntimpl.cc, src/ltlvisit/tostring.cc,
src/ltlvisit/tunabbrev.cc, src/tgba/formula2bdd.cc,
src/tgbaalgos/eltl2tgba_lacim.cc, src/tgbaalgos/ltl2tgba_lacim.cc,
src/tgbaalgos/ltl2taa.cc: Straightforward update to support or
assert on these new operators.
This commit is contained in:
Alexandre Duret-Lutz 2010-03-09 09:48:08 +01:00
parent f618e6bc1a
commit 2f8c4ac8b7
17 changed files with 343 additions and 74 deletions
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16
src/ltlast/unop.hh
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@ -1,8 +1,8 @@
// Copyright (C) 2009, 2010 Laboratoire de Recherche et D<EFBFBD>veloppement
// Copyright (C) 2009, 2010 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
// Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris
// 6 (LIP6), d<EFBFBD>partement Syst<73>mes R<>partis Coop<6F>ratifs (SRC),
// Universit<EFBFBD> Pierre et Marie Curie.
// 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
// Université Pierre et Marie Curie.
//
// This file is part of Spot, a model checking library.
//
@ -47,6 +47,8 @@ namespace spot
Finish,
// Kleene Star
Star,
// Closure
Closure, NegClosure,
};
/// \brief Build an unary operator with operation \a op and
@ -69,6 +71,14 @@ namespace spot
/// - !1 = 0
/// - !0 = 1
/// - !!Exp = Exp
/// - !Closure(Exp) = NegClosure(Exp)
/// - !NegClosure(Exp) = Closure(Exp)
/// - Closure(#e) = 1
/// - Closure(1) = 1
/// - Closure(0) = 0
/// - NegClosure(#e) = 0
/// - NegClosure(1) = 0
/// - NegClosure(0) = 1
///
/// This rewriting implies that it is not possible to build an
/// LTL formula object that is SYNTACTICALLY equal to one of