Stable version of TGTA approach implementation (automaton + product)

* src/ta/tgta.hh, src/ta/tgta.cc, src/ta/tgtaexplicit.hh,
src/ta/tgtaexplicit.hh, src/ta/tgtaproduct.hh, src/ta/tgtaproduct.cc,
src/taalgos/minimize.cc, src/taalgos/minimize.hh,
src/taalgos/emptinessta.hh, src/taalgos/emptinessta.hh,
src/taalgos/emptinessta.cc, src/taalgos/tgba2ta.hh,
src/taalgos/tgba2ta.cc: rename tgbta to tgta
in this source files.
* src/ta/tgbtaexplicit.hh, src/ta/tgbtaproduct.hh,  src/ta/tgbta.cc,
src/ta/tgbtaproduct.cc, src/ta/tgbta.hh, src/ta/tgbtaexplicit.cc:
Rename as...
* src/ta/taexplicit.cc, src/ta/taexplicit.hh, src/ta/taproduct.cc,
src/ta/taproduct.hh, src/ta/tgtaexplicit.cc: ... these.
* src/taalgos/sba2ta.hh, src/taalgos/sba2ta.cc: deleted because
the implementation of all the transformations beteween TGBA and
the different forms of TA are new implemented in src/taalgos/tgba2ta.hh
 and src/taalgos/tgba2ta.cc.
* src/tgbatest/ltl2tgba.cc: rename the options of commands that build
the different forms of TA.
* src/ta/ta.hh: BUG Fix
* src/ta/Makefile.am, src/tgbatest/ltl2ta.test: impacts of this renaming

src/ta/tgtaproduct.hh

@@ -0,0 +1,110 @@
+// Copyright (C) 2011 Laboratoire de Recherche et Développement
+// de l'Epita (LRDE).
+// Copyright (C) 2003, 2004, 2006 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.
+
+#ifndef SPOT_tgta_TGBAPRODUCT_HH
+# define SPOT_tgta_TGBAPRODUCT_HH
+
+#include "tgba/tgba.hh"
+#include "tgba/tgbaproduct.hh"
+#include "misc/fixpool.hh"
+#include "kripke/kripke.hh"
+#include "tgta.hh"
+
+namespace spot
+{
+
+  /// \brief A lazy product.  (States are computed on the fly.)
+  class tgta_product : public tgba_product
+  {
+  public:
+
+    tgta_product(const kripke* left, const tgta* right);
+
+    virtual state*
+    get_init_state() const;
+
+    virtual tgba_succ_iterator*
+    succ_iter(const state* local_state, const state* global_state = 0,
+        const tgba* global_automaton = 0) const;
+
+
+  };
+
+  /// \brief Iterate over the successors of a product computed on the fly.
+  class tgta_succ_iterator_product : public tgba_succ_iterator
+  {
+  public:
+    tgta_succ_iterator_product(const state_product* s, const kripke* k, const tgta* tgta, fixed_size_pool* pool);
+
+    virtual
+    ~tgta_succ_iterator_product();
+
+    // iteration
+    void
+    first();
+    void
+    next();
+    bool
+    done() const;
+
+    // inspection
+    state_product*
+    current_state() const;
+    bdd
+    current_condition() const;
+
+    bdd
+    current_acceptance_conditions() const;
+
+  private:
+    //@{
+    /// Internal routines to advance to the next successor.
+    void
+    step_();
+    void
+    find_next_succ_();
+
+    void
+    next_kripke_dest();
+
+    //@}
+
+  protected:
+    const state_product* source_;
+    const tgta* tgta_;
+    const kripke* kripke_;
+    fixed_size_pool* pool_;
+    tgba_succ_iterator* tgta_succ_it_;
+    tgba_succ_iterator* kripke_succ_it_;
+    state_product* current_state_;
+    bdd current_condition_;
+    bdd current_acceptance_conditions_;
+    bdd kripke_source_condition;
+    state * kripke_current_dest_state;
+
+
+  };
+
+}
+
+#endif // SPOT_tgta_TGBAPRODUCT_HH