Make bdd_dict a shared pointer.

* src/tgba/bdddict.hh (bdd_dict_ptr): New type.
(make_bdd_dict): New function.
* iface/dve2/dve2.cc, iface/dve2/dve2.hh, iface/dve2/dve2check.cc,
src/bin/dstar2tgba.cc, src/bin/ltlcross.cc,
src/dstarparse/dstarparse.yy, src/dstarparse/public.hh,
src/graphtest/tgbagraph.cc, src/kripke/kripkeexplicit.cc,
src/kripke/kripkeexplicit.hh, src/kripke/kripkeprint.cc,
src/kripkeparse/kripkeparse.yy, src/kripkeparse/public.hh,
src/kripketest/parse_print_test.cc, src/ltlvisit/apcollect.cc,
src/ltlvisit/contain.cc, src/ltlvisit/contain.hh,
src/ltlvisit/simplify.cc, src/ltlvisit/simplify.hh,
src/neverparse/neverclaimparse.yy, src/neverparse/public.hh,
src/priv/accmap.hh, src/saba/saba.hh, src/saba/sabacomplementtgba.cc,
src/saba/sabacomplementtgba.hh, src/sabatest/sabacomplementtgba.cc,
src/ta/ta.hh, src/ta/taexplicit.cc, src/ta/taexplicit.hh,
src/ta/taproduct.cc, src/ta/taproduct.hh, src/ta/tgtaexplicit.cc,
src/ta/tgtaexplicit.hh, src/taalgos/dotty.cc, src/tgba/bddprint.cc,
src/tgba/bddprint.hh, src/tgba/formula2bdd.cc, src/tgba/formula2bdd.hh,
src/tgba/taatgba.cc, src/tgba/taatgba.hh, src/tgba/tgba.hh,
src/tgba/tgbagraph.hh, src/tgba/tgbakvcomplement.cc,
src/tgba/tgbakvcomplement.hh, src/tgba/tgbaproduct.cc,
src/tgba/tgbaproduct.hh, src/tgba/tgbaproxy.cc, src/tgba/tgbaproxy.hh,
src/tgba/tgbasafracomplement.cc, src/tgba/tgbasafracomplement.hh,
src/tgba/tgbascc.cc, src/tgba/tgbascc.hh, src/tgba/tgbasgba.cc,
src/tgba/tgbasgba.hh, src/tgba/tgbaunion.cc, src/tgba/tgbaunion.hh,
src/tgba/wdbacomp.cc, src/tgbaalgos/compsusp.cc,
src/tgbaalgos/compsusp.hh, src/tgbaalgos/degen.cc,
src/tgbaalgos/dtbasat.cc, src/tgbaalgos/dtgbasat.cc,
src/tgbaalgos/emptiness.cc, src/tgbaalgos/lbtt.cc,
src/tgbaalgos/lbtt.hh, src/tgbaalgos/ltl2taa.cc,
src/tgbaalgos/ltl2taa.hh, src/tgbaalgos/ltl2tgba_fm.cc,
src/tgbaalgos/ltl2tgba_fm.hh, src/tgbaalgos/randomgraph.cc,
src/tgbaalgos/randomgraph.hh, src/tgbaalgos/save.cc,
src/tgbaalgos/translate.cc, src/tgbaalgos/translate.hh,
src/tgbaalgos/word.cc, src/tgbaalgos/word.hh, src/tgbaparse/public.hh,
src/tgbaparse/tgbaparse.yy, src/tgbatest/complementation.cc,
src/tgbatest/explprod.cc, src/tgbatest/ltl2tgba.cc,
src/tgbatest/ltlprod.cc, src/tgbatest/maskacc.cc,
src/tgbatest/powerset.cc, src/tgbatest/randtgba.cc,
src/tgbatest/taatgba.cc, src/tgbatest/tgbaread.cc,
src/tgbatest/tripprod.cc, wrap/python/ajax/spot.in,
wrap/python/tests/alarm.py, wrap/python/tests/ltl2tgba.py,
wrap/python/tests/parsetgba.py: Update to use bdd_dict_ptr and
make_bdd_dict().

src/ta/ta.hh

@@ -129,7 +129,7 @@ namespace spot
     /// This is useful when dealing with several automata (which
     /// may use the same BDD variable for different formula),
     /// or simply when printing.
-    virtual bdd_dict*
+    virtual bdd_dict_ptr
     get_dict() const = 0;
 
     /// \brief Format the state as a string for printing.

src/ta/taexplicit.cc

@@ -490,7 +490,7 @@ namespace spot
     return new ta_explicit_succ_iterator(s, condition);
   }
 
-  bdd_dict*
+  bdd_dict_ptr
   ta_explicit::get_dict() const
   {
     return tgba_->get_dict();

src/ta/taexplicit.hh

@@ -73,7 +73,7 @@ namespace spot
     virtual ta_succ_iterator*
     succ_iter(const spot::state* s, bdd condition) const;
 
-    virtual bdd_dict*
+    virtual bdd_dict_ptr
     get_dict() const;
 
     virtual std::string

src/ta/taproduct.cc

@@ -328,7 +328,7 @@ namespace spot
 
   }
 
-  bdd_dict*
+  bdd_dict_ptr
   ta_product::get_dict() const
   {
     return dict_;

src/ta/taproduct.hh

@@ -150,7 +150,7 @@ namespace spot
     virtual ta_succ_iterator_product*
     succ_iter(const spot::state* s, bdd changeset) const;
 
-    virtual bdd_dict*
+    virtual bdd_dict_ptr
     get_dict() const;
 
     virtual std::string
@@ -192,7 +192,7 @@ namespace spot
     }
 
   private:
-    bdd_dict* dict_;
+    bdd_dict_ptr dict_;
     const ta* ta_;
     const kripke* kripke_;
 

src/ta/tgtaexplicit.cc

@@ -56,7 +56,7 @@ namespace spot
     return ta_.get_tgba()->support_conditions(s->get_tgba_state());
   }
 
-  bdd_dict*
+  bdd_dict_ptr
   tgta_explicit::get_dict() const
   {
     return ta_.get_dict();

src/ta/tgtaexplicit.hh

@@ -48,7 +48,7 @@ namespace spot
     virtual tgba_succ_iterator*
     succ_iter(const spot::state* local_state) const;
 
-    virtual bdd_dict*
+    virtual bdd_dict_ptr
     get_dict() const;
 
     const ta_explicit* get_ta() const { return &ta_; }