* src/evtgbaalgos/tgba2evtgba.cc, src/evtgbaalgos/tgba2evtgba.hh:

New files.
* src/evtgbaalgos/Makefile.am (evtgbaalgos_HEADERS,
libevtgbaalgos_la_SOURCES): Add them.
* src/evtgbatest/ltl2evtgba.cc, src/evtgbatest/ltl2evtgba.test:
New files.
* src/evtgbatest/Makefile.am (check_PROGRAMS, TESTS): Add them.
(ltl2evtgba_SOURCES): New variable.

ChangeLog

@@ -1,5 +1,14 @@
 2004-10-27  Alexandre Duret-Lutz  <adl@src.lip6.fr>
 
+	* src/evtgbaalgos/tgba2evtgba.cc, src/evtgbaalgos/tgba2evtgba.hh:
+	New files.
+	* src/evtgbaalgos/Makefile.am (evtgbaalgos_HEADERS,
+	libevtgbaalgos_la_SOURCES): Add them.
+	* src/evtgbatest/ltl2evtgba.cc, src/evtgbatest/ltl2evtgba.test:
+	New files.
+	* src/evtgbatest/Makefile.am (check_PROGRAMS, TESTS): Add them.
+	(ltl2evtgba_SOURCES): New variable.
+
 	* src/tgbaalgos/ltl2tgba_fm.cc (ltl_to_tgba_fm): Do not assert
 	that the true state has only one link when unobs is used.
 

src/evtgbaalgos/Makefile.am

@@ -27,10 +27,12 @@ evtgbaalgosdir = $(pkgincludedir)/evtgbaalgos
 evtgbaalgos_HEADERS = \
   dotty.hh \
   reachiter.hh \
-  save.hh
+  save.hh \
+  tgba2evtgba.hh
 
 noinst_LTLIBRARIES = libevtgbaalgos.la
 libevtgbaalgos_la_SOURCES = \
   dotty.cc \
   reachiter.cc \
-  save.cc
+  save.cc \
+  tgba2evtgba.cc

src/evtgbaalgos/tgba2evtgba.cc

@@ -0,0 +1,150 @@
+// Copyright (C) 2004  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 "tgba2evtgba.hh"
+#include "tgba/tgba.hh"
+#include "evtgba/explicit.hh"
+#include "tgbaalgos/reachiter.hh"
+#include "ltlvisit/tostring.hh"
+#include "ltlvisit/destroy.hh"
+
+namespace spot
+{
+  namespace
+  {
+    class tgba_to_evtgba_iter:
+      public tgba_reachable_iterator_depth_first
+    {
+    public:
+      tgba_to_evtgba_iter(const tgba* a)
+	: tgba_reachable_iterator_depth_first(a)
+      {
+	res = new evtgba_explicit;
+      }
+
+      ~tgba_to_evtgba_iter()
+      {
+      }
+
+      virtual void
+      start()
+      {
+	const rsymbol_set ss =
+	  acc_to_symbol_set(automata_->all_acceptance_conditions());
+	for (rsymbol_set::const_iterator i = ss.begin(); i != ss.end(); ++i)
+	  res->declare_acceptance_condition(*i);
+      }
+
+      virtual void
+      process_state(const state* s, int n, tgba_succ_iterator*)
+      {
+	std::string str = this->automata_->format_state(s);
+	name_[n] = str;
+	if (n == 1)
+	  res->set_init_state(str);
+      }
+
+      virtual void
+      process_link(int in, int out, const tgba_succ_iterator* si)
+      {
+	// We might need to format out before process_state is called.
+	name_map_::const_iterator i = name_.find(out);
+	if (i == name_.end())
+	  {
+	    const state* s = si->current_state();
+	    process_state(s, out, 0);
+	    delete s;
+	  }
+
+	rsymbol_set ss = acc_to_symbol_set(si->current_acceptance_conditions());
+
+	bdd all = si->current_condition();
+	while (all != bddfalse)
+	  {
+	    bdd one = bdd_satone(all);
+	    all -= one;
+	    while (one != bddfalse)
+	      {
+		bdd low = bdd_low(one);
+		if (low == bddfalse)
+		  {
+		    const ltl::formula* v =
+		      automata_->get_dict()->var_formula_map[bdd_var(one)];
+		    res->add_transition(name_[in],
+					to_string(v),
+					ss,
+					name_[out]);
+		    break;
+		  }
+		else
+		  {
+		    one = low;
+		  }
+	      }
+	    assert(one != bddfalse);
+	  }
+      }
+
+      evtgba_explicit* res;
+    protected:
+      typedef std::map<int, std::string> name_map_;
+      name_map_ name_;
+
+      rsymbol_set
+      acc_to_symbol_set(bdd acc) const
+      {
+	rsymbol_set ss;
+	while (acc != bddfalse)
+	  {
+	    bdd one = bdd_satone(acc);
+	    acc -= one;
+	    while (one != bddfalse)
+	      {
+		bdd low = bdd_low(one);
+		if (low == bddfalse)
+		  {
+		    const ltl::formula* v =
+		      automata_->get_dict()->acc_formula_map[bdd_var(one)];
+		    ss.insert(rsymbol(to_string(v)));
+		    break;
+		  }
+		else
+		  {
+		    one = low;
+		  }
+	      }
+	    assert(one != bddfalse);
+	  }
+	return ss;
+      }
+
+    };
+
+  } // anonymous
+
+  evtgba_explicit*
+  tgba_to_evtgba(const tgba* a)
+  {
+    tgba_to_evtgba_iter i(a);
+    i.run();
+    return i.res;
+  }
+} // spot

src/evtgbaalgos/tgba2evtgba.hh

@@ -0,0 +1,37 @@
+// Copyright (C) 2004  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_EVTGBAALGOS_TGBA2EVTGBA_HH
+# define SPOT_EVTGBAALGOS_TGBA2EVTGBA_HH
+
+namespace spot
+{
+  class tgba;
+  class evtgba_explicit;
+
+  /// \brief Convert a tgba into an evtgba.
+  ///
+  /// (This cannot be done on-the-fly because the alphabet of a tgba
+  /// as unknown beforehand.)
+  evtgba_explicit* tgba_to_evtgba(const tgba* a);
+}
+
+#endif // SPOT_EVTGBAALGOS_TGBA2EVTGBA_HH

src/evtgbatest/Makefile.am

@@ -26,11 +26,13 @@ LDADD = ../libspot.la
 check_SCRIPTS = defs
 # Keep this sorted alphabetically.
 check_PROGRAMS = \
+  ltl2evtgba \
   explicit \
   product \
   readsave
 
 # Keep this sorted alphabetically.
+ltl2evtgba_SOURCES = ltl2evtgba.cc
 explicit_SOURCES = explicit.cc
 product_SOURCES = product.cc
 readsave_SOURCES = readsave.cc
@@ -40,7 +42,8 @@ readsave_SOURCES = readsave.cc
 TESTS = \
   explicit.test \
   readsave.test \
-  product.test
+  product.test \
+  ltl2evtgba.test
 
 EXTRA_DIST = $(TESTS)
 CLEANFILES = input1 input2 input3 stdout expected

src/evtgbatest/ltl2evtgba.cc

@@ -0,0 +1,135 @@
+// Copyright (C) 2004  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 "ltlvisit/destroy.hh"
+#include "ltlast/allnodes.hh"
+#include "ltlparse/public.hh"
+#include "evtgbaparse/public.hh"
+#include "evtgbaalgos/save.hh"
+#include "evtgbaalgos/dotty.hh"
+#include "evtgbaalgos/tgba2evtgba.hh"
+#include "tgbaalgos/ltl2tgba_fm.hh"
+
+void
+syntax(char* prog)
+{
+  std::cerr << prog << " [-d] [-D] formula" << std::endl;
+  exit(2);
+}
+
+int
+main(int argc, char** argv)
+{
+  int exit_code = 0;
+
+  if (argc < 2)
+    syntax(argv[0]);
+
+  bool debug_opt = false;
+  bool dotty_opt = false;
+
+  bool post_branching = false;
+  bool fair_loop_approx = false;
+
+  int formula_index = 1;
+
+  spot::ltl::environment& env(spot::ltl::default_environment::instance());
+  spot::ltl::atomic_prop_set* unobservables = new spot::ltl::atomic_prop_set;
+
+  while (argv[formula_index][0] == '-' && formula_index < argc)
+    {
+      if (!strcmp(argv[formula_index], "-d"))
+	{
+	  debug_opt = true;
+	}
+      else if (!strcmp(argv[formula_index], "-D"))
+	{
+	  dotty_opt = true;
+	}
+      else if (!strcmp(argv[formula_index], "-L"))
+	{
+	  fair_loop_approx = true;
+	}
+      else if (!strcmp(argv[formula_index], "-p"))
+	{
+	  post_branching = true;
+	}
+      else if (!strncmp(argv[formula_index], "-U", 2))
+	{
+	  // Parse -U's argument.
+	  const char* tok = strtok(argv[formula_index] + 2, ", \t;");
+	  while (tok)
+	    {
+	      unobservables->insert
+		(static_cast<spot::ltl::atomic_prop*>(env.require(tok)));
+	      tok = strtok(0, ", \t;");
+	    }
+	}
+      else
+	{
+	  syntax(argv[0]);
+	}
+      ++formula_index;
+    }
+
+  if (formula_index == argc)
+    syntax(argv[0]);
+
+  spot::bdd_dict* dict = new spot::bdd_dict();
+
+  spot::ltl::formula* f = 0;
+
+  {
+    spot::ltl::parse_error_list pel;
+    f = spot::ltl::parse(argv[formula_index], pel, env, debug_opt);
+    exit_code = spot::ltl::format_parse_errors(std::cerr, argv[formula_index],
+					       pel);
+  }
+
+  if (f)
+    {
+      spot::tgba* a = spot::ltl_to_tgba_fm(f, dict, false, true,
+					   post_branching,
+					   fair_loop_approx, unobservables);
+
+      spot::ltl::destroy(f);
+      spot::evtgba* e = spot::tgba_to_evtgba(a);
+
+      if (dotty_opt)
+	spot::dotty_reachable(std::cout, e);
+      else
+	spot::evtgba_save_reachable(std::cout, e);
+
+      delete e;
+      delete a;
+    }
+
+  for (spot::ltl::atomic_prop_set::iterator i = unobservables->begin();
+       i != unobservables->end(); ++i)
+    spot::ltl::destroy(*i);
+  delete unobservables;
+
+  delete dict;
+
+  return exit_code;
+}

src/evtgbatest/ltl2evtgba.test

@@ -0,0 +1,49 @@
+#!/bin/sh
+# Copyright (C) 2003, 2004  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.
+
+
+. ./defs
+
+set -e
+
+check ()
+{
+  run 0 ./ltl2evtgba "$1"
+  run 0 ./ltl2evtgba -Uun1,un2,un3 "$1"
+}
+
+# We don't check the output, but just running these might be enough to
+# trigger assertions.
+
+check a
+check 'a U b'
+check 'X a'
+check 'a & b & c'
+check 'a | b | (c U (d & (g U (h ^ i))))'
+check 'Xa & (b U !a) & (b U !a)'
+check 'Fa & Xb & GFc & Gd'
+check 'Fa & Xa & GFc & Gc'
+check 'Fc & X(a | Xb) & GF(a | Xb) & Gc'
+check 'a R (b R c)'
+check '(a U b) U (c U d)'
+
+check '((Xp2)U(X(1)))*(p1 R(p2 R p0))'