/****************************************************************************
**
** Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
** Copyright (C) 2001-2004 Roberto Raggi
**
** This file is part of the porting application of the Qt Toolkit.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#ifndef RPPLEXER_H
#define RPPLEXER_H

#include <QByteArray>
#include <QVector>
#include "tokens.h"
#include "tokenengine.h"
namespace Rpp {

class RppLexer
{
public:

    RppLexer();
    QVector<Type> lex(const TokenEngine::TokenContainer &tokenContainer);
private:
    Type indentify(int pos, int length);
    void setupScanTable();

    void scanChar(int *kind);
    void scanUnicodeChar(int *kind);
    void scanNewline(int *kind);
    void scanWhiteSpaces(int *kind);
    void scanCharLiteral(int *kind);
    void scanStringLiteral(int *kind);
    void scanNumberLiteral(int *kind);
    void scanIdentifier(int *kind);
    void scanPreprocessor(int *kind);
    void scanComment(int *kind);
    void scanOperator(int *kind);
    void scanKeyword(int *kind);

    bool match(char *buf, int len);
    typedef void (RppLexer::*scan_fun_ptr)(int *kind);
    RppLexer::scan_fun_ptr s_scan_table[128+1];
    int s_attr_table[256];

    enum
    {
        A_Alpha = 0x01,
        A_Digit = 0x02,
        A_Alphanum = A_Alpha | A_Digit,
        A_Whitespace = 0x04
    };

    const char *m_buffer;
    int m_ptr;
    int m_len;
};

} //namespace Rpp



#endif
