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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QLALR project on Qt 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 http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QTextStream>
#include "lalr.h"
#include "parsetable.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;
}
}
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