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autfilt: add --is-very-weak

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* bin/autfilt.cc: Implement --is-very-weak.
* tests/core/strength.test: Test it.
* NEWS: Mention it.
This commit is contained in:
Alexandre Duret-Lutz 2016-12-28 08:24:08 +01:00
parent 12f6c8cf10
commit 6a11e149b7
3 changed files with 46 additions and 0 deletions
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9
bin/autfilt.cc
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@ -110,6 +110,7 @@ enum {
OPT_IS_UNAMBIGUOUS,
OPT_IS_WEAK,
OPT_IS_INHERENTLY_WEAK,
OPT_IS_VERY_WEAK,
OPT_KEEP_STATES,
OPT_MASK_ACC,
OPT_MERGE,
@ -179,6 +180,8 @@ static const argp_option options[] =
"keep only weak automata", 0 },
{ "is-inherently-weak", OPT_IS_INHERENTLY_WEAK, nullptr, 0,
"keep only inherently weak automata", 0 },
{ "is-very-weak", OPT_IS_VERY_WEAK, nullptr, 0,
"keep only very-weak automata", 0 },
{ "intersect", OPT_INTERSECT, "FILENAME", 0,
"keep automata whose languages have an non-empty intersection with"
" the automaton from FILENAME", 0 },
@ -412,6 +415,7 @@ static bool opt_is_unambiguous = false;
static bool opt_is_terminal = false;
static bool opt_is_weak = false;
static bool opt_is_inherently_weak = false;
static bool opt_is_very_weak = false;
static bool opt_is_stutter_invariant = false;
static bool opt_invert = false;
static range opt_states = { 0, std::numeric_limits<int>::max() };
@ -658,6 +662,9 @@ parse_opt(int key, char* arg, struct argp_state*)
case OPT_IS_INHERENTLY_WEAK:
opt_is_inherently_weak = true;
break;
case OPT_IS_VERY_WEAK:
opt_is_very_weak = true;
break;
case OPT_IS_STUTTER_INVARIANT:
opt_is_stutter_invariant = true;
break;
@ -1061,6 +1068,8 @@ namespace
matched &= is_unambiguous(aut);
if (opt_is_terminal)
matched &= is_terminal_automaton(aut);
else if (opt_is_very_weak)
matched &= is_very_weak_automaton(aut);
else if (opt_is_weak)
matched &= is_weak_automaton(aut);
else if (opt_is_inherently_weak)