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Diffstat (limited to 'util/qlalr/main.cpp')
| -rw-r--r-- | util/qlalr/main.cpp | 185 |
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; +} |