Long live Qt 4.5!

1 files changed, 185 insertions, 0 deletions

diff --git a/util/qlalr/main.cpp b/util/qlalr/main.cpp
new file mode 100644
index 0000000..91c72bb
--- /dev/null
+++ b/util/qlalr/main.cpp
@@ -0,0 +1,185 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QLALR project on Trolltech Labs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QFile>
+#include <QtCore/QStringList>
+#include <QtCore/QtDebug>
+
+#include <cstdlib>
+
+#include "lalr.h"
+#include "dotgraph.h"
+#include "parsetable.h"
+#include "cppgenerator.h"
+#include "recognizer.h"
+
+#define QLALR_NO_DEBUG_TABLE
+#define QLALR_NO_DEBUG_DOT
+
+static void help_me ()
+{
+  qerr << "Usage: qlalr [options] [input file name]" << endl
+       << endl
+       << "  --help, -h\t\tdisplay this help and exit" << endl
+       << "  --verbose, -v\t\tverbose output" << endl
+       << "  --no-debug\t\tno debug information" << endl
+       << "  --no-lines\t\tno #line directives" << endl
+       << "  --dot\t\t\tgenerate a graph" << endl
+       << "  --troll\t\tadd the Trolltech copyright header" << endl
+       << endl;
+  exit (0);
+}
+
+int main (int argc, char *argv[])
+{
+  QCoreApplication app (argc, argv);
+
+  bool generate_dot = false;
+  bool generate_report = false;
+  bool no_lines = false;
+  bool debug_info = true;
+  bool troll_copyright = false;
+  QString file_name = 0;
+
+  QStringList args = app.arguments ();
+  args.removeFirst ();
+
+  foreach (QString arg, args)
+    {
+      if (arg == QLatin1String ("-h") || arg == QLatin1String ("--help"))
+        help_me ();
+
+      else if (arg == QLatin1String ("-v") || arg == QLatin1String ("--verbose"))
+        generate_report = true;
+
+      else if (arg == QLatin1String ("--dot"))
+        generate_dot = true;
+
+      else if (arg == QLatin1String ("--no-lines"))
+        no_lines = true;
+
+      else if (arg == QLatin1String ("--no-debug"))
+        debug_info = false;
+
+      else if (arg == QLatin1String ("--troll"))
+        troll_copyright = true;
+
+      else if (file_name.isEmpty ())
+	file_name = arg;
+
+      else
+        qerr << "*** Warning. Ignore argument `" << arg << "'" << endl;
+    }
+
+  if (file_name.isEmpty ())
+    {
+      help_me ();
+      exit (EXIT_SUCCESS);
+    }
+
+  Grammar grammar;
+  Recognizer p (&grammar, no_lines);
+
+  if (! p.parse (file_name))
+    exit (EXIT_FAILURE);
+
+  if (grammar.rules.isEmpty ())
+    {
+      qerr << "*** Fatal. No rules!" << endl;
+      exit (EXIT_FAILURE);
+    }
+
+  else if (grammar.start == grammar.names.end ())
+    {
+      qerr << "*** Fatal. No start symbol!" << endl;
+      exit (EXIT_FAILURE);
+    }
+
+  grammar.buildExtendedGrammar ();
+  grammar.buildRuleMap ();
+
+  Automaton aut (&grammar);
+  aut.build ();
+
+  CppGenerator gen (p, grammar, aut, generate_report);
+  gen.setDebugInfo (debug_info);
+  gen.setTrollCopyright (troll_copyright);
+  gen ();
+
+  if (generate_dot)
+    {
+      DotGraph genDotFile (qout);
+      genDotFile (&aut);
+    }
+
+  else if (generate_report)
+    {
+      ParseTable genParseTable (qout);
+      genParseTable(&aut);
+    }
+
+  return EXIT_SUCCESS;
+}
+
+QString Recognizer::expand (const QString &text) const
+{
+  QString code = text;
+
+  if (_M_grammar->start != _M_grammar->names.end ())
+    {
+      code = code.replace (QLatin1String("$start_id"), QString::number (std::distance (_M_grammar->names.begin (), _M_grammar->start)));
+      code = code.replace (QLatin1String("$start"), *_M_grammar->start);
+    }
+
+  code = code.replace (QLatin1String("$header"), _M_grammar->table_name.toLower () + QLatin1String("_p.h"));
+
+  code = code.replace (QLatin1String("$table"), _M_grammar->table_name);
+  code = code.replace (QLatin1String("$parser"), _M_grammar->table_name);
+
+  if (_M_current_rule != _M_grammar->rules.end ())
+    {
+      code = code.replace (QLatin1String("$rule_number"), QString::number (std::distance (_M_grammar->rules.begin (), _M_current_rule)));
+      code = code.replace (QLatin1String("$rule"), *_M_current_rule->lhs);
+    }
+
+  return code;
+}