/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 "parser.h"
#include "utils.h"
#include <stdio.h>
#include <stdlib.h>

QT_BEGIN_NAMESPACE

#ifdef USE_LEXEM_STORE
Symbol::LexemStore Symbol::lexemStore;
#endif

static const char *error_msg = 0;

#ifdef Q_CC_MSVC
#define ErrorFormatString "%s(%d): "
#else
#define ErrorFormatString "%s:%d: "
#endif

void Parser::error(int rollback) {
    index -= rollback;
    error();
}
void Parser::error(const char *msg) {
    if (msg || error_msg)
        qWarning(ErrorFormatString "Error: %s",
                 currentFilenames.top().constData(), symbol().lineNum, msg?msg:error_msg);
    else
        qWarning(ErrorFormatString "Parse error at \"%s\"",
                 currentFilenames.top().constData(), symbol().lineNum, symbol().lexem().data());
    exit(EXIT_FAILURE);
}

void Parser::warning(const char *msg) {
    if (displayWarnings && msg)
        fprintf(stderr, ErrorFormatString "Warning: %s\n",
                currentFilenames.top().constData(), qMax(0, index > 0 ? symbol().lineNum : 0), msg);
}

QT_END_NAMESPACE