summaryrefslogtreecommitdiffstats
path: root/lib/kformula/kformulacompatibility.h
blob: 9be5c7baab21971c8894dd5328933c703151005e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
/* This file is part of the KDE project
   Copyright (C) 2001 Ulrich Kuettler <[email protected]>

   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 <tqdom.h>
#include <tqstring.h>

KFORMULA_NAMESPACE_BEGIN

/**
 * Converter from the other kformula lib string
 * to a loadable dom.
 */
class Compatibility {
public:

    Compatibility();

    /**
     * Builds a kformula DOM from a old formula string.
     */
    TQDomDocument buildDOM(TQString text);

private:

    TQDomElement readSequence(const TQDomDocument& doc);
    TQDomElement readMatrix(const TQDomDocument& doc);

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

    void appendNextSequence(const TQDomDocument& doc, TQDomElement element);
    TQDomElement getLastSequence(const TQDomDocument& doc, TQDomElement sequence);

    TQDomElement findIndexNode(const TQDomDocument& doc, TQDomElement sequence);

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

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

    /**
     * the string we read
     */
    TQString formulaString;

    /**
     * current pos
     */
    uint pos;
};

KFORMULA_NAMESPACE_END

#endif // KFORMULACOMPATIBILITY_H