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* src/ltlvisit/syntimpl.cc: Fix detection of purely eventual formulae.

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Alexandre Duret-Lutz 2005-05-14 20:56:19 +00:00
parent 2e15a93525
commit 5a39d40b2c
2 changed files with 16 additions and 11 deletions
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ChangeLog
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@ -1,3 +1,7 @@
2005-05-13 Alexandre Duret-Lutz <adl@src.lip6.fr>
* src/ltlvisit/syntimpl.cc: Fix detection of purely eventual formulae.
2005-05-12 Alexandre Duret-Lutz <adl@src.lip6.fr>
* src/tgbaalgos/ltl2tgba_fm.cc: Fix handling of fair_loop_approx.

23
src/ltlvisit/syntimpl.cc
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@ -1,4 +1,4 @@
// Copyright (C) 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
// Copyright (C) 2004, 2005 Laboratoire d'Informatique de Paris 6 (LIP6),
// département Systèmes Répartis Coopératifs (SRC), Université Pierre
// et Marie Curie.
//
@ -98,23 +98,24 @@ namespace spot
case binop::Xor:
case binop::Equiv:
case binop::Implies:
universal = recurse_un(f1) & recurse_un(f2);
eventual = recurse_ev(f1) & recurse_ev(f2);
universal = recurse_un(f1) && recurse_un(f2);
eventual = recurse_ev(f1) && recurse_ev(f2);
return;
case binop::U:
universal = recurse_un(f1) & recurse_un(f2);
if ((f1 == constant::true_instance()) ||
(recurse_ev(f1)))
if ((f1 == constant::true_instance())
// Both operand must be purely eventual, unlike in
// the proceedings of Concur'00. (The revision of
// the paper available at
// http://www1.bell-labs.com/project/TMP/ is fixed.)
|| (recurse_ev(f1) && recurse_ev(f2)))
eventual = true;
return;
case binop::R:
eventual = recurse_ev(f1) & recurse_ev(f2);
if ((f1 == constant::false_instance()))
//||
//(recurse_un(f1)))
eventual = recurse_ev(f1) && recurse_ev(f2);
if ((f1 == constant::false_instance())
|| (recurse_un(f1) && recurse_un(f2)))
universal = true;
if (!universal)
universal = recurse_un(f1) & recurse_un(f2);
return;
}
/* Unreachable code. */