/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the qt3to4 porting application of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#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
