rename src/tgbaalgos/ as src/twaalgos/

Automatic mass renaming.

* src/tgbaalgos/: Rename as...
* src/twaalgos/: ... this.
* README, configure.ac, iface/ltsmin/modelcheck.cc, src/Makefile.am,
src/bin/autfilt.cc, src/bin/common_aoutput.cc,
src/bin/common_aoutput.hh, src/bin/common_output.hh,
src/bin/common_post.hh, src/bin/dstar2tgba.cc, src/bin/ltl2tgba.cc,
src/bin/ltl2tgta.cc, src/bin/ltlcross.cc, src/bin/ltldo.cc,
src/bin/ltlfilt.cc, src/bin/randaut.cc, src/dstarparse/dra2ba.cc,
src/dstarparse/nra2nba.cc, src/dstarparse/nsa2tgba.cc,
src/graphtest/twagraph.cc, src/kripke/kripkeprint.cc,
src/ltlvisit/contain.cc, src/ltlvisit/contain.hh,
src/ltlvisit/exclusive.cc, src/taalgos/emptinessta.hh,
src/tgbatest/checkpsl.cc, src/tgbatest/checkta.cc,
src/tgbatest/complementation.cc, src/tgbatest/emptchk.cc,
src/tgbatest/ltl2tgba.cc, src/tgbatest/ltlprod.cc,
src/tgbatest/randtgba.cc, src/tgbatest/taatgba.cc, src/twa/twa.cc,
src/twa/twagraph.hh, src/twa/twasafracomplement.cc,
wrap/python/spot_impl.i: Adjust.

src/twaalgos/cleanacc.cc

@@ -0,0 +1,63 @@
+// -*- coding: utf-8 -*-
+// Copyright (C) 2015 Laboratoire de Recherche et Développement
+// de l'Epita.
+//
+// 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 "twaalgos/cleanacc.hh"
+
+namespace spot
+{
+  twa_graph_ptr cleanup_acceptance_here(twa_graph_ptr aut)
+  {
+    auto& acc = aut->acc();
+    if (acc.num_sets() == 0)
+      return aut;
+
+    auto& c = aut->get_acceptance();
+    acc_cond::mark_t used_in_cond = c.used_sets();
+
+    acc_cond::mark_t used_in_aut = 0U;
+    for (auto& t: aut->transitions())
+      used_in_aut |= t.acc;
+
+    auto useful = used_in_aut & used_in_cond;
+
+    auto useless = acc.comp(useful);
+
+    if (!useless)
+      return aut;
+
+    // Remove useless marks from the automaton
+    for (auto& t: aut->transitions())
+      t.acc = t.acc.strip(useless);
+
+    // Remove useless marks from the acceptance condition
+    aut->set_acceptance(useful.count(), c.strip(useless, true));
+
+    // This may in turn cause even more set to be unused, because of
+    // some simplifications, so do it again.
+    return cleanup_acceptance_here(aut);
+  }
+
+  twa_graph_ptr cleanup_acceptance(const_twa_graph_ptr aut)
+  {
+    return cleanup_acceptance_here(make_twa_graph(aut,
+						     twa::prop_set::all()));
+  }
+
+
+}