Promote use of shared_ptr

* spot/kripke/kripke.hh, spot/ltsmin/ltsmin.cc,
spot/ltsmin/ltsmin.hh, spot/mc/ec.hh, spot/mc/intersect.hh,
spot/mc/utils.hh, spot/twacube/Makefile.am,
spot/twacube/fwd.hh, spot/twacube/twacube.hh,
spot/twacube_algos/convert.cc, spot/twacube_algos/convert.hh,
tests/core/twacube.cc, tests/ltsmin/modelcheck.cc: here.

spot/kripke/kripke.hh

@@ -21,6 +21,7 @@
 
 #include <spot/kripke/fairkripke.hh>
 #include <spot/twacube/cube.hh>
+#include <memory>
 
 namespace spot
 {
@@ -33,7 +34,8 @@ namespace spot
   /// are provided by this template class. Specialisations
   /// will handle it.
   template<typename State, typename SuccIterator>
-  class SPOT_API kripkecube
+  class SPOT_API kripkecube:
+    public std::enable_shared_from_this<kripkecube<State, SuccIterator>>
   {
   public:
     /// \brief Returns the initial State of the System

spot/ltsmin/ltsmin.cc

@@ -1938,7 +1938,7 @@ namespace spot
       throw std::runtime_error(err.str());
   }
 
-  spot::kripkecube<spot::cspins_state, spot::cspins_iterator>*
+  ltsmin_kripkecube_ptr
   ltsmin_model::kripkecube(const atomic_prop_set* to_observe,
                            const formula dead, int compress) const
   {
@@ -1975,7 +1975,8 @@ namespace spot
       observed.push_back(dead_ap);
 
     // Finally build the system.
-    return new spot::kripkecube<spot::cspins_state, spot::cspins_iterator>
+    return std::make_shared<spot::kripkecube<spot::cspins_state,
+                                             spot::cspins_iterator>>
       (iface, compress, observed, selfloopize, dead_ap);
   }
 
@@ -2012,9 +2013,8 @@ namespace spot
   }
 
   std::tuple<bool, std::string, istats>
-  ltsmin_model::modelcheck(spot::kripkecube<spot::cspins_state,
-                                            spot::cspins_iterator>* sys,
-                           spot::twacube* twa, bool compute_ctrx)
+  ltsmin_model::modelcheck(ltsmin_kripkecube_ptr sys,
+                           spot::twacube_ptr twa, bool compute_ctrx)
   {
     ec_renault13lpar<cspins_state, cspins_iterator,
                      cspins_state_hash, cspins_state_equal> ec(*sys, twa);

spot/ltsmin/ltsmin.hh

@@ -31,6 +31,10 @@ namespace spot
   class cspins_iterator;
   typedef int* cspins_state;
 
+  typedef std::shared_ptr<spot::kripkecube<spot::cspins_state,
+                                           spot::cspins_iterator>>
+    ltsmin_kripkecube_ptr;
+
   class SPOT_API ltsmin_model final
   {
   public:
@@ -79,7 +83,7 @@ namespace spot
     // \brief The same as above but returns a kripkecube, i.e. a kripke
     // that can be use in parallel. Moreover, it support more ellaborated
     // atomic propositions such as "P.a == P.c"
-    spot::kripkecube<spot::cspins_state, spot::cspins_iterator>*
+    ltsmin_kripkecube_ptr
     kripkecube(const atomic_prop_set* to_observe,
                formula dead = formula::tt(),
                int compress = 0) const;
@@ -89,8 +93,8 @@ namespace spot
     /// has been found and a string representing the counterexample if the
     /// computation have been required
     static std::tuple<bool, std::string, istats>
-    modelcheck(spot::kripkecube<spot::cspins_state, spot::cspins_iterator>* sys,
-               spot::twacube* twa, bool compute_ctrx = false);
+    modelcheck(ltsmin_kripkecube_ptr sys,
+               spot::twacube_ptr twa, bool compute_ctrx = false);
 
     /// Number of variables in a state
     int state_size() const;

spot/mc/ec.hh

@@ -45,7 +45,7 @@ namespace spot
 
   public:
     ec_renault13lpar(kripkecube<State, SuccIterator>& sys,
-                     twacube* twa)
+                     twacube_ptr twa)
       : intersect<State, SuccIterator, StateHash, StateEqual,
                   ec_renault13lpar<State, SuccIterator,
                                    StateHash, StateEqual>>(sys, twa),

spot/mc/intersect.hh

@@ -59,7 +59,7 @@ namespace spot
   {
   public:
     intersect(kripkecube<State, SuccIterator>& sys,
-              twacube* twa):
+              twacube_ptr twa):
       sys_(sys), twa_(twa)
     {
       assert(is_a_kripkecube(sys));
@@ -254,7 +254,7 @@ namespace spot
       std::shared_ptr<trans_index> it_prop;
     };
     kripkecube<State, SuccIterator>& sys_;
-    twacube* twa_;
+    twacube_ptr twa_;
     std::vector<todo_element> todo;
     typedef std::unordered_map<const product_state, int,
                                product_state_hash,

spot/mc/utils.hh

@@ -95,7 +95,6 @@ namespace spot
     std::vector<std::string>* names_;
     bdd_dict_ptr dict_;
     std::unordered_map<int, int> reverse_binder_;
-
   };
 
 
@@ -116,7 +115,7 @@ namespace spot
 
   public:
     product_to_twa(kripkecube<State, SuccIterator>& sys,
-                   twacube* twa)
+                   twacube_ptr twa)
       : intersect<State, SuccIterator, StateHash, StateEqual,
                   product_to_twa<State, SuccIterator,
                                  StateHash, StateEqual>>(sys, twa)
@@ -143,7 +142,6 @@ namespace spot
       for (auto ap : this->twa_->get_ap())
         {
           auto idx = res_->register_ap(ap);
-          std::cout << ap << idx << std::endl;
           reverse_binder_[i++] = idx;
         }
     }

spot/twacube/Makefile.am

@@ -25,7 +25,7 @@ AM_CXXFLAGS = $(WARNING_CXXFLAGS)
 
 twacubedir = $(pkgincludedir)/twacube
 
-twacube_HEADERS =  cube.hh twacube.hh
+twacube_HEADERS =  cube.hh twacube.hh fwd.hh
 
 noinst_LTLIBRARIES = libtwacube.la
 libtwacube_la_SOURCES = \

spot/twacube/fwd.hh

@@ -0,0 +1,29 @@
+// -*- coding: utf-8 -*-
+// Copyright (C) 2016 Laboratoire de Recherche
+// et Développement 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 3 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <memory>
+
+namespace spot
+{
+  class twacube;
+  typedef std::shared_ptr<twacube> twacube_ptr;
+  typedef std::shared_ptr<const twacube> const_twacube_ptr;
+}

spot/twacube/twacube.hh

@@ -24,6 +24,7 @@
 #include <spot/graph/graph.hh>
 #include <spot/twa/acc.hh>
 #include <spot/twacube/cube.hh>
+#include <spot/twacube/fwd.hh>
 
 namespace spot
 {
@@ -101,7 +102,7 @@ namespace spot
     const graph_t::state_storage_t& st_;
   };
 
-  class SPOT_API twacube final
+  class SPOT_API twacube final: public std::enable_shared_from_this<twacube>
   {
   public:
     twacube() = delete;
@@ -150,4 +151,9 @@ namespace spot
     graph_t theg_;
     cubeset cubeset_;
   };
+
+  inline twacube_ptr make_twacube(const std::vector<std::string> aps)
+  {
+    return std::make_shared<twacube>(aps);
+  }
 }

spot/twacube_algos/convert.cc

@@ -59,14 +59,14 @@ namespace spot
     return result;
   }
 
-  spot::twacube* twa_to_twacube(const spot::const_twa_graph_ptr aut)
+  spot::twacube_ptr twa_to_twacube(const spot::const_twa_graph_ptr aut)
   {
     // Compute the necessary binder and extract atomic propositions
     std::unordered_map<int, int> ap_binder;
     std::vector<std::string>* aps = extract_aps(aut, ap_binder);
 
     // Declare the twa cube
-    spot::twacube* tg = new spot::twacube(*aps);
+    auto tg =  spot::make_twacube(*aps);
 
     // Fix acceptance
     tg->acc() = aut->acc();
@@ -135,7 +135,7 @@ namespace spot
   }
 
   spot::twa_graph_ptr
-  twacube_to_twa(spot::twacube* twacube)
+  twacube_to_twa(spot::twacube_ptr twacube)
   {
     // Grab necessary variables
     auto& theg = twacube->get_graph();

spot/twacube_algos/convert.hh

@@ -47,10 +47,10 @@ namespace spot
               std::unordered_map<int, int>& ap_binder);
 
   /// \brief Convert a twa into a twacube
-  SPOT_API spot::twacube*
+  SPOT_API twacube_ptr
   twa_to_twacube(spot::const_twa_graph_ptr aut);
 
   /// \brief Convert a twacube into a twa
   SPOT_API spot::twa_graph_ptr
-  twacube_to_twa(spot::twacube* twacube);
+  twacube_to_twa(spot::twacube_ptr twacube);
 }

tests/core/twacube.cc

@@ -47,7 +47,7 @@ int main()
   tg->new_edge(s3, s3, bddtrue, spot::acc_cond::mark_t({0, 1}));
 
   // Test translation
-  auto* aut = twa_to_twacube(tg);
+  auto aut = twa_to_twacube(tg);
   spot::print_dot(std::cout, tg);
   std::cout << "-----------\n" << *aut << "-----------\n";
 
@@ -62,7 +62,5 @@ int main()
                 << ' ' << d.acc_
                 << std::endl;
     }
-
   spot::print_dot(std::cout, spot::twacube_to_twa(aut));
-  delete aut;
 }

tests/ltsmin/modelcheck.cc

@@ -371,12 +371,11 @@ static int checked_main()
                   << ". This could slow down parallel algorithms.\n";
 
       tm.start("twa to twacube");
-      auto* propcube = spot::twa_to_twacube(prop);
+      auto propcube = spot::twa_to_twacube(prop);
       tm.stop("twa to twacube");
 
       tm.start("load kripkecube");
-      spot::kripkecube<spot::cspins_state,
-                       spot::cspins_iterator>* modelcube = nullptr;
+      spot::ltsmin_kripkecube_ptr modelcube = nullptr;
       try
         {
           modelcube = spot::ltsmin_model::load(mc_options.model)
@@ -397,7 +396,6 @@ static int checked_main()
 
       if (!modelcube)
         {
-          delete propcube;
           exit_code = 2;
           goto safe_exit;
         }
@@ -423,8 +421,6 @@ static int checked_main()
       else
         std::cout << "an accepting run exists!\n" << std::get<1>(res)
                   << std::endl;
-      delete modelcube;
-      delete propcube;
     }
 
  safe_exit: