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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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16
src/ltlast/formula.hh
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@ -152,30 +152,37 @@ namespace spot
return is.sugar_free_ltl;
}
/// Whether the formula use only LTL operators.
/// Whether the formula uses only LTL operators.
bool is_ltl_formula() const
{
return is.ltl_formula;
}
/// Whether the formula use only ELTL operators.
/// Whether the formula uses only ELTL operators.
bool is_eltl_formula() const
{
return is.eltl_formula;
}
/// Whether the formula use only PSL operators.
/// Whether the formula uses only PSL operators.
bool is_psl_formula() const
{
return is.psl_formula;
}
/// Whether the formula use only SERE operators.
/// Whether the formula uses only SERE operators.
bool is_sere_formula() const
{
return is.sere_formula;
}
/// Whether a SERE describes a finite language, or an LTL
/// formula uses no temporal operator but X.
bool is_finite() const
{
return is.finite;
}
/// \brief Whether the formula is purely eventual.
///
/// Pure eventuality formulae are defined in
@ -316,6 +323,7 @@ namespace spot
bool eltl_formula:1; // Only ELTL operators.
bool psl_formula:1; // Only PSL operators.
bool sere_formula:1; // Only SERE operators.
bool finite:1; // Finite SERE formulae, or Bool+X forms.
bool eventual:1; // Purely eventual formula.
bool universal:1; // Purely universal formula.
bool syntactic_safety:1; // Syntactic Safety Property.