Replace most uses of scc_map by scc_info.

This involves reimplementing some algorithms using tgba_digraph, and
implementing an explicit product that takes two tgba_digraphs and
produces a tgba_digraph.

* src/tgbaalgos/product.cc, src/tgbaalgos/product.hh: New files.
* src/tgbaalgos/Makefile.am: Adjust.
* src/bin/ltlcross.cc, src/tgba/tgba.cc, src/tgba/tgba.hh,
src/tgba/tgbasafracomplement.cc, src/tgba/tgbasafracomplement.hh,
src/tgbaalgos/cycles.cc, src/tgbaalgos/cycles.hh,
src/tgbaalgos/degen.cc, src/tgbaalgos/degen.hh,
src/tgbaalgos/isweakscc.cc, src/tgbaalgos/isweakscc.hh,
src/tgbaalgos/minimize.cc, src/tgbaalgos/minimize.hh,
src/tgbaalgos/powerset.cc, src/tgbaalgos/powerset.hh,
src/tgbaalgos/safety.cc, src/tgbaalgos/safety.hh,
src/tgbaalgos/sccinfo.cc, src/tgbaalgos/sccinfo.hh,
src/tgbatest/complementation.cc, src/tgbatest/emptchk.cc,
src/tgbatest/ltl2ta.test, src/tgbatest/ltl2tgba.cc,
src/tgbatest/randtgba.cc: Update to use scc_info and/or tgba_digraph.

src/tgba/tgba.cc

@@ -22,6 +22,7 @@
 
 #include "tgba.hh"
 #include "tgbaalgos/gtec/gtec.hh"
+#include <utility>
 
 namespace spot
 {
@@ -38,6 +39,10 @@ namespace spot
     if (last_support_conditions_input_)
       last_support_conditions_input_->destroy();
     delete iter_cache_;
+
+    // Destroy all named properties.
+    for (auto& np: named_prop_)
+      np.second.second(np.second.first);
   }
 
   bdd
@@ -78,4 +83,30 @@ namespace spot
     return !couvreur99(shared_from_this())->check();
   }
 
+  void
+  tgba::set_named_prop(std::string s,
+		       void* val, std::function<void(void*)> destructor)
+  {
+    auto p = named_prop_.emplace(std::piecewise_construct,
+				 std::forward_as_tuple(s),
+				 std::forward_as_tuple(val, destructor));
+    if (!p.second)
+      {
+	p.first->second.second(p.first->second.first);
+	p.first->second = std::make_pair(val, destructor);
+      }
+  }
+
+  void*
+  tgba::get_named_prop(std::string s) const
+  {
+    auto i = named_prop_.find(s);
+    if (i == named_prop_.end())
+      return nullptr;
+    return i->second.first;
+  }
+
+
+
+
 }

src/tgba/tgba.hh

@@ -27,6 +27,8 @@
 #include "acc.hh"
 #include <cassert>
 #include <memory>
+#include <unordered_map>
+#include <functional>
 #include "misc/casts.hh"
 #include "misc/hash.hh"
 
@@ -657,8 +659,20 @@ namespace spot
       bprop is;
     };
 
+#ifndef SWIG
+    // Dynamic properties, are given with a name and a destructor function.
+    std::unordered_map<std::string,
+		       std::pair<void*,
+				 std::function<void(void*)>>> named_prop_;
+#endif
   public:
 
+#ifndef SWIG
+    void set_named_prop(std::string s,
+			void* val, std::function<void(void*)> destructor);
+    void* get_named_prop(std::string s) const;
+#endif
+
     bool has_single_acc_set() const
     {
       return is.single_acc_set;

src/tgba/tgbasafracomplement.cc

@@ -570,7 +570,7 @@ namespace spot
     {
     public:
       static safra_tree_automaton*
-      create_safra_automaton(const const_tgba_ptr& a);
+      create_safra_automaton(const const_tgba_digraph_ptr& a);
     private:
       typedef std::set<int> atomic_list_t;
       typedef std::set<bdd, bdd_less_than> conjunction_list_t;
@@ -585,7 +585,8 @@ namespace spot
 
     /// \brief The body of Safra's construction.
     safra_tree_automaton*
-    safra_determinisation::create_safra_automaton(const const_tgba_ptr& a)
+    safra_determinisation::create_safra_automaton
+    (const const_tgba_digraph_ptr& a)
     {
       // initialization.
       auto sba_aut = degeneralize(a);
@@ -1074,7 +1075,7 @@ namespace spot
   // tgba_safra_complement
   //////////////////////////
 
-  tgba_safra_complement::tgba_safra_complement(const const_tgba_ptr& a)
+  tgba_safra_complement::tgba_safra_complement(const const_tgba_digraph_ptr& a)
     : tgba(a->get_dict()), automaton_(a),
       safra_(safra_determinisation::create_safra_automaton(a))
   {

src/tgba/tgbasafracomplement.hh

@@ -50,7 +50,7 @@ namespace spot
   class SPOT_API tgba_safra_complement : public tgba
   {
   public:
-    tgba_safra_complement(const const_tgba_ptr& a);
+    tgba_safra_complement(const const_tgba_digraph_ptr& a);
     virtual ~tgba_safra_complement();
 
     // tgba interface.
@@ -67,7 +67,7 @@ namespace spot
   protected:
     virtual bdd compute_support_conditions(const state* state) const;
   private:
-    const_tgba_ptr automaton_;
+    const_tgba_digraph_ptr automaton_;
     void* safra_;
 #if TRANSFORM_TO_TBA
     acc_cond::mark_t the_acceptance_cond_;
@@ -82,7 +82,7 @@ namespace spot
   typedef std::shared_ptr<const tgba_safra_complement>
     const_tgba_safra_complement_ptr;
   inline tgba_safra_complement_ptr
-  make_safra_complement(const const_tgba_ptr& a)
+  make_safra_complement(const const_tgba_digraph_ptr& a)
   {
     return std::make_shared<tgba_safra_complement>(a);
   }