move and build qlalr

Change-Id: I852e1a33fc056a52f6dbba8aaf7dd75274bbe815
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 128 insertions, 0 deletions

diff --git a/src/tools/qlalr/parsetable.cpp b/src/tools/qlalr/parsetable.cpp
new file mode 100644
index 0000000000..6877af7a00
--- /dev/null
+++ b/src/tools/qlalr/parsetable.cpp
@@ -0,0 +1,128 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the utils of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 "parsetable.h"
+
+#include "lalr.h"
+
+#include <QtCore/qtextstream.h>
+
+ParseTable::ParseTable (QTextStream &o):
+  out (o)
+{
+}
+
+void ParseTable::operator () (Automaton *aut)
+{
+  Grammar *g = aut->_M_grammar;
+
+  int rindex = 1;
+  for (RulePointer rule = g->rules.begin (); rule != g->rules.end (); ++rule)
+    out << rindex++ << ")\t" << *rule << endl;
+  out << endl << endl;
+
+  int index = 0;
+  for (StatePointer state = aut->states.begin (); state != aut->states.end (); ++state)
+    {
+      out << "state " << index++ << endl << endl;
+
+      for (ItemPointer item = state->kernel.begin (); item != state->kernel.end (); ++item)
+        {
+          out << " *  " << *item;
+
+          if (item->dot == item->end_rhs ())
+            out << " " << aut->lookaheads [item];
+
+          out << endl;
+        }
+
+      bool first = true;
+      for (Bundle::iterator arrow = state->bundle.begin (); arrow != state->bundle.end (); ++arrow)
+        {
+          if (! g->isTerminal (arrow.key ()))
+            continue;
+
+          if (first)
+            out << endl;
+
+          first = false;
+
+          out << "    " << *arrow.key () << " shift, and go to state " << std::distance (aut->states.begin (), *arrow) << endl;
+        }
+
+      first = true;
+      for (ItemPointer item = state->closure.begin (); item != state->closure.end (); ++item)
+        {
+          if (item->dot != item->end_rhs () || item->rule == state->defaultReduce)
+            continue;
+
+          if (first)
+            out << endl;
+
+          first = false;
+
+          foreach (Name la, aut->lookaheads.value (item))
+            out << "    " << *la << " reduce using rule " << aut->id (item->rule) << " (" << *item->rule->lhs << ")" << endl;
+        }
+
+      first = true;
+      for (Bundle::iterator arrow = state->bundle.begin (); arrow != state->bundle.end (); ++arrow)
+        {
+          if (! g->isNonTerminal (arrow.key ()))
+            continue;
+
+          if (first)
+            out << endl;
+
+          first = false;
+
+          out << "    " << *arrow.key () << " go to state " << std::distance (aut->states.begin (), *arrow) << endl;
+        }
+
+      if (state->defaultReduce != g->rules.end ())
+        {
+          out << endl
+              << "    $default reduce using rule " << aut->id (state->defaultReduce) << " (" << *state->defaultReduce->lhs << ")" << endl;
+        }
+
+      out << endl;
+    }
+}