summaryrefslogtreecommitdiff
path: root/src/corelib/tools/qchar.h
blob: bcfb361f090d47d92ed2d4f513b4a62db0663224 (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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
/****************************************************************************
**
** 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 QtCore module 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 QCHAR_H
#define QCHAR_H

#include <QtCore/qglobal.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

class QString;

struct QLatin1Char
{
public:
    inline explicit QLatin1Char(char c) : ch(c) {}
#ifdef Q_COMPILER_MANGLES_RETURN_TYPE
    inline const char toLatin1() const { return ch; }
    inline const ushort unicode() const { return ushort(uchar(ch)); }
#else
    inline char toLatin1() const { return ch; }
    inline ushort unicode() const { return ushort(uchar(ch)); }
#endif

private:
    char ch;
};


class Q_CORE_EXPORT QChar {
public:
    QChar();
#ifndef QT_NO_CAST_FROM_ASCII
    QT_ASCII_CAST_WARN_CONSTRUCTOR QChar(char c);
    QT_ASCII_CAST_WARN_CONSTRUCTOR QChar(uchar c);
#endif
    QChar(QLatin1Char ch);
    QChar(uchar c, uchar r);
    inline QChar(ushort rc) : ucs(rc){}
    QChar(short rc);
    QChar(uint rc);
    QChar(int rc);
    enum SpecialCharacter {
        Null = 0x0000,
        Nbsp = 0x00a0,
        ReplacementCharacter = 0xfffd,
        ObjectReplacementCharacter = 0xfffc,
        ByteOrderMark = 0xfeff,
        ByteOrderSwapped = 0xfffe,
#ifdef QT3_SUPPORT
        null = Null,
        replacement = ReplacementCharacter,
        byteOrderMark = ByteOrderMark,
        byteOrderSwapped = ByteOrderSwapped,
        nbsp = Nbsp,
#endif
        ParagraphSeparator = 0x2029,
        LineSeparator = 0x2028
    };
    QChar(SpecialCharacter sc);

    // Unicode information

    enum Category
    {
        NoCategory,

        Mark_NonSpacing,          //   Mn
        Mark_SpacingCombining,    //   Mc
        Mark_Enclosing,           //   Me

        Number_DecimalDigit,      //   Nd
        Number_Letter,            //   Nl
        Number_Other,             //   No

        Separator_Space,          //   Zs
        Separator_Line,           //   Zl
        Separator_Paragraph,      //   Zp

        Other_Control,            //   Cc
        Other_Format,             //   Cf
        Other_Surrogate,          //   Cs
        Other_PrivateUse,         //   Co
        Other_NotAssigned,        //   Cn

        Letter_Uppercase,         //   Lu
        Letter_Lowercase,         //   Ll
        Letter_Titlecase,         //   Lt
        Letter_Modifier,          //   Lm
        Letter_Other,             //   Lo

        Punctuation_Connector,    //   Pc
        Punctuation_Dash,         //   Pd
        Punctuation_Open,         //   Ps
        Punctuation_Close,        //   Pe
        Punctuation_InitialQuote, //   Pi
        Punctuation_FinalQuote,   //   Pf
        Punctuation_Other,        //   Po

        Symbol_Math,              //   Sm
        Symbol_Currency,          //   Sc
        Symbol_Modifier,          //   Sk
        Symbol_Other,             //   So

        Punctuation_Dask = Punctuation_Dash // oops
    };

    enum Direction
    {
        DirL, DirR, DirEN, DirES, DirET, DirAN, DirCS, DirB, DirS, DirWS, DirON,
        DirLRE, DirLRO, DirAL, DirRLE, DirRLO, DirPDF, DirNSM, DirBN
    };

    enum Decomposition
    {
        NoDecomposition,
        Canonical,
        Font,
        NoBreak,
        Initial,
        Medial,
        Final,
        Isolated,
        Circle,
        Super,
        Sub,
        Vertical,
        Wide,
        Narrow,
        Small,
        Square,
        Compat,
        Fraction

#ifdef QT3_SUPPORT
        , Single = NoDecomposition
#endif
    };

    enum Joining
    {
        OtherJoining, Dual, Right, Center
    };

    enum CombiningClass
    {
        Combining_BelowLeftAttached       = 200,
        Combining_BelowAttached           = 202,
        Combining_BelowRightAttached      = 204,
        Combining_LeftAttached            = 208,
        Combining_RightAttached           = 210,
        Combining_AboveLeftAttached       = 212,
        Combining_AboveAttached           = 214,
        Combining_AboveRightAttached      = 216,

        Combining_BelowLeft               = 218,
        Combining_Below                   = 220,
        Combining_BelowRight              = 222,
        Combining_Left                    = 224,
        Combining_Right                   = 226,
        Combining_AboveLeft               = 228,
        Combining_Above                   = 230,
        Combining_AboveRight              = 232,

        Combining_DoubleBelow             = 233,
        Combining_DoubleAbove             = 234,
        Combining_IotaSubscript           = 240
    };

    enum UnicodeVersion {
        Unicode_Unassigned,
        Unicode_1_1,
        Unicode_2_0,
        Unicode_2_1_2,
        Unicode_3_0,
        Unicode_3_1,
        Unicode_3_2,
        Unicode_4_0,
        Unicode_4_1,
        Unicode_5_0
    };
    // ****** WHEN ADDING FUNCTIONS, CONSIDER ADDING TO QCharRef TOO

    Category category() const;
    Direction direction() const;
    Joining joining() const;
    bool hasMirrored() const;
    unsigned char combiningClass() const;

    QChar mirroredChar() const;
    QString decomposition() const;
    Decomposition decompositionTag() const;

    int digitValue() const;
    QChar toLower() const;
    QChar toUpper() const;
    QChar toTitleCase() const;
    QChar toCaseFolded() const;

    UnicodeVersion unicodeVersion() const;

#ifdef Q_COMPILER_MANGLES_RETURN_TYPE
    const char toAscii() const;
    inline const char toLatin1() const;
    inline const ushort unicode() const { return ucs; }
#else
    char toAscii() const;
    inline char toLatin1() const;
    inline ushort unicode() const { return ucs; }
#endif
#ifdef Q_NO_PACKED_REFERENCE
    inline ushort &unicode() { return const_cast<ushort&>(ucs); }
#else
    inline ushort &unicode() { return ucs; }
#endif

    static QChar fromAscii(char c);
    static QChar fromLatin1(char c);

    inline bool isNull() const { return ucs == 0; }
    bool isPrint() const;
    bool isPunct() const;
    bool isSpace() const;
    bool isMark() const;
    bool isLetter() const;
    bool isNumber() const;
    bool isLetterOrNumber() const;
    bool isDigit() const;
    bool isSymbol() const;
    inline bool isLower() const { return category() == Letter_Lowercase; }
    inline bool isUpper() const { return category() == Letter_Uppercase; }
    inline bool isTitleCase() const { return category() == Letter_Titlecase; }

    inline bool isHighSurrogate() const {
        return ((ucs & 0xfc00) == 0xd800);
    }
    inline bool isLowSurrogate() const {
        return ((ucs & 0xfc00) == 0xdc00);
    }

    inline uchar cell() const { return uchar(ucs & 0xff); }
    inline uchar row() const { return uchar((ucs>>8)&0xff); }
    inline void setCell(uchar cell);
    inline void setRow(uchar row);

    static inline uint surrogateToUcs4(ushort high, ushort low) {
        return (uint(high)<<10) + low - 0x35fdc00;
    }
    static inline uint surrogateToUcs4(QChar high, QChar low) {
        return (uint(high.ucs)<<10) + low.ucs - 0x35fdc00;
    }
    static inline ushort highSurrogate(uint ucs4) {
        return (ucs4>>10) + 0xd7c0;
    }
    static inline ushort lowSurrogate(uint ucs4) {
        return ucs4%0x400 + 0xdc00;
    }

    static Category QT_FASTCALL category(uint ucs4);
    static Category QT_FASTCALL category(ushort ucs2);
    static Direction QT_FASTCALL direction(uint ucs4);
    static Direction QT_FASTCALL direction(ushort ucs2);
    static Joining QT_FASTCALL joining(uint ucs4);
    static Joining QT_FASTCALL joining(ushort ucs2);
    static unsigned char QT_FASTCALL combiningClass(uint ucs4);
    static unsigned char QT_FASTCALL combiningClass(ushort ucs2);

    static uint QT_FASTCALL mirroredChar(uint ucs4);
    static ushort QT_FASTCALL mirroredChar(ushort ucs2);
    static Decomposition QT_FASTCALL decompositionTag(uint ucs4);

    static int QT_FASTCALL digitValue(uint ucs4);
    static int QT_FASTCALL digitValue(ushort ucs2);
    static uint QT_FASTCALL toLower(uint ucs4);
    static ushort QT_FASTCALL toLower(ushort ucs2);
    static uint QT_FASTCALL toUpper(uint ucs4);
    static ushort QT_FASTCALL toUpper(ushort ucs2);
    static uint QT_FASTCALL toTitleCase(uint ucs4);
    static ushort QT_FASTCALL toTitleCase(ushort ucs2);
    static uint QT_FASTCALL toCaseFolded(uint ucs4);
    static ushort QT_FASTCALL toCaseFolded(ushort ucs2);

    static UnicodeVersion QT_FASTCALL unicodeVersion(uint ucs4);
    static UnicodeVersion QT_FASTCALL unicodeVersion(ushort ucs2);

    static QString QT_FASTCALL decomposition(uint ucs4);

#ifdef QT3_SUPPORT
    inline QT3_SUPPORT bool mirrored() const { return hasMirrored(); }
    inline QT3_SUPPORT QChar lower() const { return toLower(); }
    inline QT3_SUPPORT QChar upper() const { return toUpper(); }
    static inline QT3_SUPPORT bool networkOrdered() {
        return QSysInfo::ByteOrder == QSysInfo::BigEndian;
    }
#ifdef Q_COMPILER_MANGLES_RETURN_TYPE
    inline QT3_SUPPORT const char latin1() const { return toLatin1(); }
    inline QT3_SUPPORT const char ascii() const { return toAscii(); }
#else
    inline QT3_SUPPORT char latin1() const { return toLatin1(); }
    inline QT3_SUPPORT char ascii() const { return toAscii(); }
#endif
#endif

private:
#ifdef QT_NO_CAST_FROM_ASCII
    QChar(char c);
    QChar(uchar c);
#endif
    ushort ucs;
}
#if (defined(__arm__) || defined(__ARMEL__))
    Q_PACKED
#endif
    ;

Q_DECLARE_TYPEINFO(QChar, Q_MOVABLE_TYPE);

inline QChar::QChar() : ucs(0) {}

#ifdef Q_COMPILER_MANGLES_RETURN_TYPE
inline const char QChar::toLatin1() const { return ucs > 0xff ? '\0' : char(ucs); }
#else
inline char QChar::toLatin1() const { return ucs > 0xff ? '\0' : char(ucs); }
#endif
inline QChar QChar::fromLatin1(char c) { return QChar(ushort(uchar(c))); }

inline QChar::QChar(uchar c, uchar r) : ucs((r << 8) | c){}
inline QChar::QChar(short rc) : ucs(ushort(rc)){}
inline QChar::QChar(uint rc) : ucs(ushort(rc & 0xffff)){}
inline QChar::QChar(int rc) : ucs(ushort(rc & 0xffff)){}
inline QChar::QChar(SpecialCharacter s) : ucs(ushort(s)) {}
inline QChar::QChar(QLatin1Char ch) : ucs(ch.unicode()) {}

inline void QChar::setCell(uchar acell)
{ ucs = (ucs & 0xff00) + acell; }
inline void QChar::setRow(uchar arow)
{ ucs = (ushort(arow)<<8) + (ucs&0xff); }

inline bool operator==(QChar c1, QChar c2) { return c1.unicode() == c2.unicode(); }
inline bool operator!=(QChar c1, QChar c2) { return c1.unicode() != c2.unicode(); }
inline bool operator<=(QChar c1, QChar c2) { return c1.unicode() <= c2.unicode(); }
inline bool operator>=(QChar c1, QChar c2) { return c1.unicode() >= c2.unicode(); }
inline bool operator<(QChar c1, QChar c2) { return c1.unicode() < c2.unicode(); }
inline bool operator>(QChar c1, QChar c2) { return c1.unicode() > c2.unicode(); }

#ifndef QT_NO_DATASTREAM
Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QChar &);
Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QChar &);
#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif // QCHAR_H