Add a class to convert a bdd into its complement.

* src/misc/acccompl.cc, src/misc/acccompl.hh: Add a way to
an acceptance condition in an automaton, into its
complement.
Create a method to make the reverse operation.
* src/misc/Makefile.am: Add the new files to the compilation.

src/misc/acccompl.hh

@@ -0,0 +1,58 @@
+// -*- coding: utf-8 -*-
+// Copyright (C) 2012 Laboratoire de Recherche et Developpement 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 2 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 Spot; see the file COPYING.  If not, write to the Free
+// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+
+
+#ifndef SPOT_MISC_ACCCOMPL_HH
+# define SPOT_MISC_ACCCOMPL_HH
+
+#include <map>
+#include <bdd.h>
+#include "misc/hash.hh"
+#include "misc/bddlt.hh"
+
+namespace spot
+{
+  /// \brief Help class to convert a bdd of an automaton into
+  /// its complement.
+  /// This is used when you need to complement all the acceptance
+  /// conditions in an automaton. For example in the simulation.
+  class AccCompl
+  {
+    public:
+      AccCompl(bdd all, bdd neg)
+        : all_(all),
+          neg_(neg)
+      {
+      }
+
+
+      bdd complement(const bdd acc);
+      bdd reverse_complement(const bdd acc);
+
+    protected:
+      bdd all_;
+      bdd neg_;
+      typedef Sgi::hash_map<bdd, bdd, bdd_hash> bdd_cache_t;
+      bdd_cache_t cache_;
+  };
+} // End namespace Spot
+
+#endif // !SPOT_MISC_ACCCOMPL_HH