/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** 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 PREPROCESSORCONTROL_H

#define PREPROCESSORCONTROL_H

#include "tokenengine.h"

#include "tokenizer.h"

#include "rpplexer.h"

#include "rpptreeevaluator.h"

#include "rpp.h"

#include <QString>

#include <QStringList>

#include <QHash>

QT_BEGIN_NAMESPACE

class IncludeFiles

{

public:

    IncludeFiles(const QString &basePath, const QStringList &searchPaths);

    QString quoteLookup(const QString &currentFile,

                        const QString &includeFile)const;

    QString angleBracketLookup(const QString &includeFile) const;

    QString resolve(const QString &filename) const;

private:

    QString searchIncludePaths(const QString &includeFile)const;

    QStringList m_searchPaths;

    QString m_basePath;

};

class PreprocessorCache: public QObject

{

Q_OBJECT

public:

    PreprocessorCache();

    TokenEngine::TokenContainer sourceTokens(const QString &filename);

    Rpp::Source *sourceTree(const QString &filename);

    bool containsSourceTokens(const QString &filename);

    bool containsSourceTree(const QString &filename);

signals:

    void error(QString type, QString text);

    void readFile(QByteArray &contents, QString filename);

private:

    QByteArray readFile(const QString & filename) const;

    Tokenizer m_tokenizer;

    Rpp::RppLexer m_lexer;

    Rpp::Preprocessor m_preprocessor;

    TypedPool<Rpp::Item> m_memoryPool;

    QHash<QString, Rpp::Source *> m_sourceTrees;

    QHash<QString, TokenEngine::TokenContainer> m_sourceTokens;

};

class PreprocessorController: public QObject

{

Q_OBJECT

public:

    PreprocessorController(IncludeFiles includefiles,

                           PreprocessorCache &preprocessorCache,

                           QStringList preLoadFilesFilenames = QStringList());

    TokenEngine::TokenSectionSequence evaluate(const QString &filename, Rpp::DefineMap *activedefinitions);

public slots:

    void includeSlot(Rpp::Source *&includee, const Rpp::Source *includer,

         const QString &filename, Rpp::RppTreeEvaluator::IncludeType includeType);

    void readFile(QByteArray &contents, QString filename);

signals:

    void error(QString type, QString text);

private:

    IncludeFiles m_includeFiles;

    Rpp::RppTreeEvaluator m_rppTreeEvaluator;

    PreprocessorCache &m_preprocessorCache;

    QHash<QString, QByteArray> m_preLoadFiles;

};

Rpp::DefineMap *defaultMacros(PreprocessorCache &preprocessorCache);

class StandardOutErrorHandler : public QObject

{

Q_OBJECT

public slots:

    void error(QString type, QString text);

};

class RppPreprocessor

{

public:

    RppPreprocessor(QString basePath, QStringList includePaths, QStringList preLoadFilesFilename = QStringList());

    ~RppPreprocessor();

    TokenEngine::TokenSectionSequence evaluate(const QString &filename);

private:

    IncludeFiles m_includeFiles;

    PreprocessorCache m_cache;

    Rpp::DefineMap *m_activeDefinitions;

    PreprocessorController m_controller;

    StandardOutErrorHandler m_errorHandler;

};

QT_END_NAMESPACE

#endif