Add a class to represent Transition-based Alternating Automata (TAA).

* misc/Makefile.am, misc/bbop.cc, misc/bddop.hh: Factorize some
code on BDDs to compute all_acceptance_conditions from
neg_acceptance_condition.
* src/tgba/Makefile.am, src/tgbatest/Makefile.am: Adjust.
* src/tgba/taa.cc, src/tgba/taa.hh: The TAA class.
* src/tgba/tgbaexplicit.hh: Use the factorized code in bddop.hh.
* src/tgbatest/taa.cc, src/tgbatest/taa.test: Some test cases.

src/tgbatest/Makefile.am

@@ -41,6 +41,7 @@ check_PROGRAMS = \
   readsave \
   reductgba \
   reduccmp \
+  taa \
   tgbaread \
   tripprod
 
@@ -62,6 +63,7 @@ readsave_SOURCES = readsave.cc
 reductgba_SOURCES = reductgba.cc
 reduccmp_SOURCES = reductgba.cc
 reduccmp_CXXFLAGS = -DREDUCCMP
+taa_SOURCES = taa.cc
 tgbaread_SOURCES = tgbaread.cc
 tripprod_SOURCES = tripprod.cc
 
@@ -70,6 +72,7 @@ tripprod_SOURCES = tripprod.cc
 TESTS = \
   eltl2tgba.test \
   explicit.test \
+  taa.test \
   tgbaread.test \
   readsave.test \
   ltl2tgba.test \

src/tgbatest/taa.cc

@@ -0,0 +1,80 @@
+// Copyright (C) 2009 Laboratoire d'Informatique de Paris
+// 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
+// Université Pierre et Marie Curie.
+//
+// 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.
+
+#include <iostream>
+#include <cassert>
+#include "misc/hash.hh"
+#include "ltlenv/defaultenv.hh"
+#include "ltlast/allnodes.hh"
+#include "tgba/taa.hh"
+
+typedef Sgi::hash_set<
+  const spot::state*, spot::state_ptr_hash, spot::state_ptr_equal
+  > mset;
+
+void
+dfs(spot::taa* a, const spot::state* s, mset& m)
+{
+  if (m.find(s) != m.end())
+    return;
+  m.insert(s);
+
+  spot::tgba_succ_iterator* i = a->succ_iter(s);
+  assert(i);
+  for (i->first(); !i->done(); i->next())
+  {
+    std::cout << a->format_state(i->current_state()) << std::endl;
+    dfs(a, i->current_state(), m);
+  }
+  delete i;
+}
+
+int
+main()
+{
+  spot::bdd_dict* dict = new spot::bdd_dict();
+
+  spot::ltl::default_environment& e =
+    spot::ltl::default_environment::instance();
+  spot::taa* a = new spot::taa(dict);
+
+  typedef spot::taa::transition trans;
+  typedef spot::taa::state state;
+  typedef spot::taa::state_set state_set;
+
+  std::string ss1_values[] = { "state 2", "state 3" };
+  std::vector<std::string> ss1_vector(ss1_values, ss1_values + 2);
+  trans* t1 = a->create_transition("state 1", ss1_vector);
+  trans* t2 = a->create_transition("state 2", "state 3");
+  trans* t3 = a->create_transition("state 2", "state 4");
+
+  a->add_condition(t1, e.require("a"));
+  a->add_condition(t2, e.require("b"));
+  a->add_condition(t3, e.require("c"));
+
+  mset m;
+  spot::state* init = a->get_init_state();
+  dfs(a, init, m);
+
+  delete init;
+  delete a;
+  delete dict;
+}

src/tgbatest/taa.test

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+. ./defs || exit -1
+set -e
+
+run 0 ../taa || exit 1