F:/KPlato/koffice/libs/kformula/kformulacompatibility.h

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/* This file is part of the KDE project
   Copyright (C) 2001 Ulrich Kuettler <ulrich.kuettler@mailbox.tu-dresden.de>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#ifndef KFORMULACOMPATIBILITY_H
#define KFORMULACOMPATIBILITY_H

#include <QString>

KFORMULA_NAMESPACE_BEGIN

class Compatibility {
public:

    Compatibility();

    QDomDocument buildDOM(const QString& text);

private:

    QDomElement readSequence(const QDomDocument& doc);
    QDomElement readMatrix(const QDomDocument& doc);

    void appendToSequence(QDomElement sequence, QDomElement element, int leftIndexSeen);

    void appendNextSequence(const QDomDocument& doc, QDomElement element);
    QDomElement getLastSequence(const QDomDocument& doc, QDomElement sequence);

    QDomElement findIndexNode(const QDomDocument& doc, QDomElement sequence);

    ushort nextToken() { return formulaString[pos++].unicode(); }
    ushort lookAhead(uint i) const { return formulaString[pos+i].unicode(); }
    void pushback() { pos--; }

    bool hasNext() const { return pos < formulaString.length(); }
    uint tokenLeft() const { return formulaString.length()-pos; }

    QString formulaString;

    int pos;
};

KFORMULA_NAMESPACE_END

#endif // KFORMULACOMPATIBILITY_H

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