Use the count_state() function instead of stats_reachable().

* src/tgbaalgos/postproc.cc: Move the count_state() function...
* src/priv/countstates.cc, src/priv/countstates.hh: ... in these
new files.
* src/priv/Makefile.am: Add them.
* src/saba/sabacomplementtgba.cc, src/tgba/tgbakvcomplement.cc,
src/tgbaalgos/minimize.cc: Use count_states() instead of
stats_reachable().

src/priv/Makefile.am

@@ -24,6 +24,7 @@ noinst_HEADERS = \
   acccompl.hh \
   accconv.hh \
   bddalloc.hh \
+  countstates.hh \
   freelist.hh
 
 noinst_LTLIBRARIES = libpriv.la
@@ -31,6 +32,7 @@ libpriv_la_SOURCES = \
   acccompl.cc \
   accconv.cc \
   bddalloc.cc \
+  countstates.cc \
   freelist.cc
 
 

src/priv/countstates.cc

@@ -0,0 +1,41 @@
+// -*- coding: utf-8 -*-
+// Copyright (C) 2013 Laboratoire de Recherche et Développement
+// de l'Epita (LRDE).
+//
+// This file is part of Spot, a model checking library.
+//
+// Spot is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+//
+// Spot is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+// License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "countstates.hh"
+#include "tgba/tgbaexplicit.hh"
+#include "tgbaalgos/stats.hh"
+
+namespace spot
+{
+  unsigned count_states(const tgba* a)
+  {
+    const sba_explicit_number* se =
+      dynamic_cast<const sba_explicit_number*>(a);
+    if (se)
+      return se->num_states();
+    const tgba_explicit_number* te =
+      dynamic_cast<const tgba_explicit_number*>(a);
+    if (te)
+      return te->num_states();
+    tgba_statistics st = stats_reachable(a);
+    return st.states;
+  }
+
+
+}

src/priv/countstates.hh

@@ -0,0 +1,29 @@
+// -*- coding: utf-8 -*-
+// Copyright (C) 2013 Laboratoire de Recherche et Développement
+// de l'Epita (LRDE).
+//
+// This file is part of Spot, a model checking library.
+//
+// Spot is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+//
+// Spot is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+// License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef SPOT_PRIV_COUNTSTATES_HH
+# define SPOT_PRIV_COUNTSTATES_HH
+
+namespace spot
+{
+  class tgba;
+  unsigned count_states(const tgba* a);
+}
+
+#endif // SPOT_PRIV_COUNTSTATES_HH

src/saba/sabacomplementtgba.cc

@@ -1,6 +1,6 @@
 // -*- coding: utf-8 -*-
-// Copyright (C) 2009, 2010, 2011, 2012 Laboratoire de Recherche et
-// Développement de l'Epita (LRDE).
+// Copyright (C) 2009, 2010, 2011, 2012, 2013 Laboratoire de Recherche
+// et Développement de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
 //
@@ -28,7 +28,7 @@
 #include "misc/hashfunc.hh"
 #include "ltlast/formula.hh"
 #include "ltlast/constant.hh"
-#include "tgbaalgos/stats.hh"
+#include "priv/countstates.hh"
 
 #include "sabacomplementtgba.hh"
 #include "explicitstateconjunction.hh"
@@ -376,10 +376,7 @@ namespace spot
     int v = get_dict()
       ->register_acceptance_variable(ltl::constant::true_instance(), this);
     the_acceptance_cond_ = bdd_ithvar(v);
-    {
-      spot::tgba_statistics a_size =  spot::stats_reachable(automaton_);
-      nb_states_ = a_size.states;
-    }
+    nb_states_ = count_states(automaton_);
   }
 
   saba_complement_tgba::~saba_complement_tgba()

src/tgba/tgbakvcomplement.cc

@@ -29,7 +29,7 @@
 #include "misc/hashfunc.hh"
 #include "ltlast/formula.hh"
 #include "ltlast/constant.hh"
-#include "tgbaalgos/stats.hh"
+#include "priv/countstates.hh"
 
 namespace spot
 {
@@ -601,10 +601,7 @@ namespace spot
     int v = get_dict()
       ->register_acceptance_variable(ltl::constant::true_instance(), this);
     the_acceptance_cond_ = bdd_ithvar(v);
-    {
-      spot::tgba_statistics a_size =  spot::stats_reachable(automaton_);
-      nb_states_ = a_size.states;
-    }
+    nb_states_ = count_states(automaton_);
     get_acc_list();
   }
 

src/tgbaalgos/minimize.cc

@@ -1,5 +1,6 @@
-// Copyright (C) 2010, 2011, 2012 Laboratoire de Recherche et Développement
-// de l'Epita (LRDE).
+// -*- coding: utf-8 -*-
+// Copyright (C) 2010, 2011, 2012, 2013 Laboratoire de Recherche et
+// Développement de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
 //
@@ -45,7 +46,7 @@
 #include "tgbaalgos/scc.hh"
 #include "tgbaalgos/ltl2tgba_fm.hh"
 #include "tgbaalgos/bfssteps.hh"
-#include "tgbaalgos/stats.hh"
+#include "priv/countstates.hh"
 
 namespace spot
 {
@@ -535,7 +536,7 @@ namespace spot
 
       // This corresponds to the algorithm in Fig. 1 of "Efficient
       // minimization of deterministic weak omega-automata" written by
-      // Christof Löding and published in Information Processing
+      // Christof Löding and published in Information Processing
       // Letters 79 (2001) pp 105--109.
 
       // We also keep track of whether an SCC is useless
@@ -554,7 +555,7 @@ namespace spot
       unsigned k = (scc_count | 1) + 1;
 
       // SCC are numbered in topological order
-      // (but in the reverse order as Löding's)
+      // (but in the reverse order as Löding's)
       for (unsigned m = 0; m < scc_count; ++m)
 	{
 	  bool is_useless = true;
@@ -628,8 +629,8 @@ namespace spot
     if (reject_bigger)
       {
 	// Abort if min_aut_f has more states than aut_f.
-	tgba_statistics orig_size = stats_reachable(aut_f);
-	if (orig_size.states < min_aut_f->num_states())
+	unsigned orig_states = count_states(aut_f);
+	if (orig_states < min_aut_f->num_states())
 	  {
 	    delete min_aut_f;
 	    return const_cast<tgba*>(aut_f);

src/tgbaalgos/postproc.cc

@@ -22,26 +22,13 @@
 #include "simulation.hh"
 #include "sccfilter.hh"
 #include "degen.hh"
-#include "stats.hh"
 #include "stripacc.hh"
 #include <cstdlib>
 #include "misc/optionmap.hh"
+#include "priv/countstates.hh"
 
 namespace spot
 {
-  unsigned count_states(const tgba* a)
-  {
-    const sba_explicit_number* se =
-      dynamic_cast<const sba_explicit_number*>(a);
-    if (se)
-      return se->num_states();
-    const tgba_explicit_number* te =
-      dynamic_cast<const tgba_explicit_number*>(a);
-    if (te)
-      return te->num_states();
-    tgba_statistics st = stats_reachable(a);
-    return st.states;
-  }
 
   postprocessor::postprocessor(const option_map* opt)
     : type_(TGBA), pref_(Small), level_(High),