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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 qt3to4 porting application 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 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef RPPTREEWALKER_H
#define RPPTREEWALKER_H

#include "rpp.h"

QT_BEGIN_NAMESPACE

namespace Rpp {

class RppTreeWalker
{
public:
    virtual ~RppTreeWalker(){};
    virtual void evaluateItem(const Item *item);
    virtual void evaluateItemComposite(const ItemComposite *itemComposite);
    virtual void evaluateSource(const Source *source);
    virtual void evaluateDirective(const Directive *directive);
    virtual void evaluateIfSection(const IfSection *ifSection);
    virtual void evaluateConditionalDirective(const ConditionalDirective *conditionalDirective);

    virtual void evaluateText(const Text *textLine) {Q_UNUSED(textLine);}
    virtual void evaluateEmptyDirective(const EmptyDirective *directive) {Q_UNUSED(directive);}
    virtual void evaluateErrorDirective(const ErrorDirective *directive) {Q_UNUSED(directive);}
    virtual void evaluatePragmaDirective(const PragmaDirective *directive) {Q_UNUSED(directive);}
    virtual void evaluateIncludeDirective(const IncludeDirective *directive) {Q_UNUSED(directive);}
    virtual void evaluateDefineDirective(const DefineDirective *directive) {Q_UNUSED(directive);}
    virtual void evaluateUndefDirective(const UndefDirective *directive) {Q_UNUSED(directive);}
    virtual void evaluateLineDirective(const LineDirective *directive) {Q_UNUSED(directive);}
    virtual void evaluateNonDirective(const NonDirective *directive) {Q_UNUSED(directive);}

    virtual void evaluateIfdefDirective(const IfdefDirective *directive);
    virtual void evaluateIfndefDirective(const IfndefDirective *directive);
    virtual void evaluateIfDirective(const IfDirective *directive);
    virtual void evaluateElifDirective(const ElifDirective *directive);
    virtual void evaluateElseDirective(const ElseDirective *directive);

    virtual void evaluateEndifDirective(const EndifDirective *directive) {Q_UNUSED(directive);}
};

}

QT_END_NAMESPACE

#endif