re-import qlalr into qtbase

we have a bunch of qlalr-generated sources all over the place. it would
be much nicer to actually generate them at build time, rather than
checking them in. this obviously requires building qlalr early on ...

this commit restores the sources at their pre-modularization location
and makes no attempt at integrating them into the build process yet.
this is a measure to overcome git stupidity.

this imports qt/qlalr at commit 4071d86e82b299f26e335a7faf662b5a676e2279
with some style fixes on top.

Change-Id: I83472bc492440ecb96a8a0d5bf74cf968a1e17d2
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 112 insertions, 0 deletions

diff --git a/util/qlalr/recognizer.h b/util/qlalr/recognizer.h
new file mode 100644
index 0000000000..9c64fac043
--- /dev/null
+++ b/util/qlalr/recognizer.h
@@ -0,0 +1,112 @@
+
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QLALR project on Qt Labs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/QtDebug>
+#include <QtCore/QString>
+#include <QtCore/QFile>
+#include <QtCore/QTextStream>
+
+#include "grammar_p.h"
+#include "lalr.h"
+
+#include <cstdlib>
+
+class Recognizer: protected grammar
+{
+public:
+  Recognizer (Grammar *grammar, bool no_lines);
+  ~Recognizer();
+
+  bool parse (const QString &input_file = QString ());
+
+  inline QString decls () const { return _M_decls; }
+  inline QString impls () const { return _M_impls; }
+
+protected:
+  inline void reallocateStack ();
+
+  inline QString &sym (int index)
+  { return sym_stack [tos + index - 1]; }
+
+protected: // scanner
+  int nextToken();
+
+  inline void inp ()
+  {
+    if (_M_currentChar != _M_lastChar)
+      {
+        ch = *_M_currentChar++;
+
+        if (ch == QLatin1Char('\n'))
+          ++_M_line;
+      }
+    else
+      ch = QChar();
+  }
+
+  QString expand (const QString &text) const;
+
+protected:
+  // recognizer
+  int tos;
+  int stack_size;
+  QVector<QString> sym_stack;
+  int *state_stack;
+
+  QString _M_contents;
+  QString::const_iterator _M_firstChar;
+  QString::const_iterator _M_lastChar;
+  QString::const_iterator _M_currentChar;
+
+  // scanner
+  QChar ch;
+  int _M_line;
+  int _M_action_line;
+  Grammar *_M_grammar;
+  RulePointer _M_current_rule;
+  QString _M_input_file;
+
+  QString _M_decls;
+  QString _M_impls;
+  QString _M_current_value;
+  bool _M_no_lines;
+};