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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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@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
<< " --copyright\t\tadd the Qt 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 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 ("--copyright") || arg == QLatin1String ("--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.setCopyright (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;
}
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