Add several options to CAR

* spot/twa/acc.hh: Remove useless comment.
* spot/twaalgos/car.cc: Rewrite the implementation to try
  multiple algorithms and choose the best, add the possibility
  to force the order of the colors/pairs in LAR and use
  propagate_marks_here.
* spot/twaalgos/car.hh, tests/python/car.py: Create a new system of
  options for CAR.
* spot/twaalgos/degen.cc, spot/twaalgos/degen.hh: Add the possibility
  to forbid some marks in is_partially_degeneralizable.

tests/python/car.py

@@ -20,31 +20,83 @@
 
 import spot
 
+no_option = spot.car_option()
+no_option.search_ex = False
+no_option.use_last = False
+no_option.force_order = False
+no_option.partial_degen = False
+no_option.acc_clean = False
+no_option.parity_equiv = False
+no_option.parity_prefix = False
+no_option.rabin_to_buchi = False
+no_option.propagate_col = False
+
+acc_clean_search_opt = spot.car_option()
+acc_clean_search_opt.force_order = False
+acc_clean_search_opt.partial_degen = False
+acc_clean_search_opt.parity_equiv = False
+acc_clean_search_opt.parity_prefix = False
+acc_clean_search_opt.rabin_to_buchi = False
+acc_clean_search_opt.propagate_col = False
+
+partial_degen_opt = spot.car_option()
+partial_degen_opt.search_ex = False
+partial_degen_opt.force_order = False
+partial_degen_opt.parity_equiv = False
+partial_degen_opt.parity_prefix = False
+partial_degen_opt.rabin_to_buchi = False
+partial_degen_opt.propagate_col = False
+
+parity_equiv_opt = spot.car_option()
+parity_equiv_opt.search_ex = False
+parity_equiv_opt.use_last = False
+parity_equiv_opt.force_order = False
+parity_equiv_opt.partial_degen = False
+parity_equiv_opt.parity_prefix = False
+parity_equiv_opt.rabin_to_buchi = False
+parity_equiv_opt.propagate_col = False
+
+rab_to_buchi_opt = spot.car_option()
+rab_to_buchi_opt.use_last = False
+rab_to_buchi_opt.force_order = False
+rab_to_buchi_opt.partial_degen = False
+rab_to_buchi_opt.parity_equiv = False
+rab_to_buchi_opt.parity_prefix = False
+rab_to_buchi_opt.propagate_col = False
+
+# Force to use CAR or IAR for each SCC
+use_car_opt = spot.car_option()
+use_car_opt.partial_degen = False
+use_car_opt.parity_equiv = False
+use_car_opt.parity_prefix = False
+use_car_opt.rabin_to_buchi = False
+use_car_opt.propagate_col = False
+
+all_opt = spot.car_option()
+all_opt.pretty_print = True
+
+
 options = [
-    # No option
-    [False, False, False, False, False, False, False, False],
-    # Only acc clean and …
-    # … search last
-    [True, False, True, False, True, False, False, False],
-    # … partial degen
-    [False, True, True, False, False, False, False, False],
-    # … parity equiv
-    [False, False, True, True, False, False, False, False],
-    # … parity prefix
-    [False, False, True, False, False, True, False, False],
-    # … rabin to buchi
-    [False, False, True, False, False, False, True, False],
+    no_option,
+    acc_clean_search_opt,
+    partial_degen_opt,
+    parity_equiv_opt,
+    rab_to_buchi_opt,
+    use_car_opt,
+    spot.car_option(),
 ]
 
 i = 1
 
 def test(aut):
     global i
-    for se, par, cl, parity, last, pref, rab, pri in options:
-        p = spot.car(aut, se, par, cl, parity, last, pref, rab, pri)
-        assert(spot.are_equivalent(aut, p))
-    print(f"OK {i}")
-    i += 1
+    for opt in options:
+        try:
+            p = spot.to_parity(aut, opt)
+            assert(spot.are_equivalent(aut, p))
+        except:
+            # Are equivalent can raise exception
+            assert(False)
 
 
 test(spot.automaton("""HOA: v1
@@ -154,10 +206,10 @@ explicit-labels trans-acc --BODY-- State: 0 [0&1] 2 {4 5} [0&1] 4 {0 4}
 4 [!0&!1] 1 {2 4} State: 5 [!0&1] 4 --END--
 """))
 
-for f in spot.randltl(15, 1000):
+for f in spot.randltl(15, 2000):
     test(spot.translate(f, "det", "G"))
 
-for f in spot.randltl(5, 10000):
+for f in spot.randltl(5, 25000):
     test(spot.translate(f))
 
 test(spot.translate('!(GFa -> (GFb & GF(!b & !Xb)))', 'gen', 'det'))
@@ -249,4 +301,4 @@ State: 1
 [0&!1] 1 {2 3}
 [0&1] 1 {1 2 4}
 --END--
-"""))
+"""))