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translate_aa: setup translation choice

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This commit is contained in:
Antoine Martin 2024-10-23 13:56:00 +02:00
parent f687ef7bbb
commit dfa828739b
2 changed files with 69 additions and 3 deletions
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70
spot/twaalgos/translate_aa.cc
View file

@ -18,9 +18,14 @@
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "config.h"
#include <string.h>
#include <spot/twaalgos/alternation.hh>
#include <spot/twaalgos/ltl2tgba_fm.hh>
#include <spot/twaalgos/translate_aa.hh>
#include <spot/tl/derive.hh>
#include <spot/tl/expansions.hh>
#include <spot/tl/nenoform.hh>
#include <iostream>
@ -176,7 +181,6 @@ namespace spot
{
unsigned init_state = aut_->new_state();
outedge_combiner oe(aut_, accepting_sink_);
bdd comb = bddtrue;
for (const auto& sub_formula : f)
{
@ -285,7 +289,22 @@ namespace spot
{
unsigned rhs_init = recurse(f[1]);
const auto& dict = aut_->get_dict();
twa_graph_ptr sere_aut = derive_finite_automaton_with_first(f[0], dict);
twa_graph_ptr sere_aut;
if (sere_aa_translation_options() == 0)
{
// old bdd method
sere_aut = sere_to_tgba(f[0], dict, true);
}
else if (sere_aa_translation_options() == 1)
{
// derivation
sere_aut = derive_finite_automaton_with_first(f[0], dict);
}
else
{
// linear form
sere_aut = expand_finite_automaton(f[0], dict, exp_opts::expand_opt::None);
}
// TODO: this should be a std::vector<bool> !
std::vector<unsigned> acc_states;
@ -326,7 +345,22 @@ namespace spot
{
unsigned rhs_init = recurse(f[1]);
const auto& dict = aut_->get_dict();
twa_graph_ptr sere_aut = derive_finite_automaton_with_first(f[0], dict);
twa_graph_ptr sere_aut;
if (sere_aa_translation_options() == 0)
{
// old bdd method
sere_aut = sere_to_tgba(f[0], dict, true);
}
else if (sere_aa_translation_options() == 1)
{
// derivation
sere_aut = derive_finite_automaton_with_first(f[0], dict);
}
else
{
// linear form
sere_aut = expand_finite_automaton(f[0], dict, exp_opts::expand_opt::None);
}
// DFA recognizes the empty language, so {0} []-> rhs is always true
unsigned ns = sere_aut->num_states();
@ -482,4 +516,34 @@ namespace spot
return aut;
}
int sere_aa_translation_options(const char* version)
{
static int pref = -1;
const char *env = nullptr;
if (!version && pref < 0)
version = env = getenv("SPOT_SERE_AA_TRANSLATE_OPT");
if (version)
{
if (!strcasecmp(version, "bdd"))
pref = 0;
else if (!strcasecmp(version, "derive"))
pref = 1;
else if (!strcasecmp(version, "expansion"))
pref = 2;
else
{
const char* err = ("sere_aa_translation_options(): argument"
" should be one of {bdd,derive,expansion}");
if (env)
err = "SPOT_SERE_AA_TRANSLATE_OPT should be one of {bdd,derive,expansion}";
throw std::runtime_error(err);
}
}
else if (pref < 0)
{
pref = 0;
}
return pref;
}
}

2
spot/twaalgos/translate_aa.hh
View file

@ -29,4 +29,6 @@ namespace spot
{
SPOT_API twa_graph_ptr
ltl_to_aa(formula f, bdd_dict_ptr& dict, bool purge_dead_states = false);
SPOT_API int sere_aa_translation_options(const char* version = nullptr);
}