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Track finite formulae.

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I.e., SERE without star, or LTL formula using only X and Boolean
operators.

* src/ltlast/formula.hh, src/ltlast/formula.cc: Add a bit for
tracking finite formulas.
* src/ltlast/atomic_prop.cc, src/ltlast/automatop.cc,
src/ltlast/bunop.cc, src/ltlast/constant.cc, src/ltlast/formula.cc:
Adjust.
* src/ltlast/unop.cc, src/ltlast/binop.cc: Adjust and use that
bit to refine the computation of some LTL classes.
* src/ltltest/kind.test: New tests.
This commit is contained in:
Alexandre Duret-Lutz 2011-02-27 13:29:14 +01:00
parent df760a4597
commit fb386209aa
9 changed files with 84 additions and 31 deletions
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3
src/ltlast/bunop.cc
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@ -51,11 +51,14 @@ namespace spot
switch (op_)
{
case Star:
if (max_ == unbounded)
is.finite = false;
if (min_ == 0)
is.accepting_eword = true;
break;
case Equal:
case Goto:
is.finite = false;
is.accepting_eword = (min_ == 0);
// Equal and Goto can only apply to Boolean formulae.
assert(child->is_boolean());