Cleanup neverclaim support.

* src/neverclaimparse/: Shorthen as ...
* src/neverparse/:... this.
* src/Makefile.am: Adjust, and add back the directories mistakenly
removed by previous patch.
* README: Adjust, and keep the file's width under 80 columns.
* configure.ac: Adjust.
* src/neverparse/Makefile.am, src/neverparse/fmterror.cc,
src/neverparse/neverclaimparse.yy,
src/neverparse/neverclaimscan.ll, src/neverparse/public.hh:
Fix copyright.
* src/tgbatest/Makefile.am (check_PROGRAMS): Remove neverclaimread.
* src/tgbatest/ltl2tgba.cc: Add option -XN to read a neverclaim.
* src/tgbatest/readneverclaim.cc: Delete.
* src/tgbatest/neverclaimread.test: Use ltl2tgba instead of
neverclaimread.

src/neverparse/public.hh

@@ -0,0 +1,83 @@
+// Copyright (C) 2010 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 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_NEVERCLAIMPARSE_PUBLIC_HH
+# define SPOT_NEVERCLAIMPARSE_PUBLIC_HH
+
+# include "tgba/tgbaexplicit.hh"
+// Unfortunately Bison 2.3 uses the same guards in all parsers :(
+# undef BISON_LOCATION_HH
+# undef BISON_POSITION_HH
+# include "neverparse/location.hh"
+# include "ltlenv/defaultenv.hh"
+# include <string>
+# include <list>
+# include <utility>
+# include <iosfwd>
+
+namespace spot
+{
+  /// \addtogroup tgba_io
+  /// @{
+
+  /// \brief A parse diagnostic with its location.
+  typedef std::pair<neverclaimyy::location, std::string> neverclaim_parse_error;
+  /// \brief A list of parser diagnostics, as filled by parse.
+  typedef std::list<neverclaim_parse_error> neverclaim_parse_error_list;
+
+  /// \brief Build a spot::tgba_explicit from a Spin never claim file.
+  /// \param filename The name of the file to parse.
+  /// \param error_list A list that will be filled with
+  ///        parse errors that occured during parsing.
+  /// \param dict The BDD dictionary where to use.
+  /// \param env The environment of atomic proposition into which parsing
+  ///        should take place.
+  /// \param debug When true, causes the parser to trace its execution.
+  /// \return A pointer to the tgba built from \a filename, or
+  ///        0 if the file could not be opened.
+  ///
+  /// Note that the parser usually tries to recover from errors.  It can
+  /// return an non zero value even if it encountered error during the
+  /// parsing of \a filename.  If you want to make sure \a filename
+  /// was parsed succesfully, check \a error_list for emptiness.
+  ///
+  /// \warning This function is not reentrant.
+  tgba_explicit_string* neverclaim_parse(
+    const std::string& filename,
+    neverclaim_parse_error_list&
+    error_list,
+    bdd_dict* dict,
+    ltl::environment& env
+    = ltl::default_environment::instance(),
+    bool debug = false);
+
+  /// \brief Format diagnostics produced by spot::neverclaim_parse.
+  /// \param os Where diagnostics should be output.
+  /// \param filename The filename that should appear in the diagnostics.
+  /// \param error_list The error list filled by spot::ltl::parse while
+  ///        parsing \a ltl_string.
+  /// \return \c true iff any diagnostic was output.
+  bool format_neverclaim_parse_errors(std::ostream& os,
+                                const std::string& filename,
+                                neverclaim_parse_error_list& error_list);
+  /// @}
+}
+
+#endif // SPOT_NEVERCLAIMPARSE_PUBLIC_HH