aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/icu/common/uprops.cpp
blob: 5186a0c75caf6be4c0abdbfd581a1801c9500033 (plain) (blame)
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
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
*   Copyright (C) 2002-2016, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  uprops.cpp
*   encoding:   UTF-8
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2002feb24
*   created by: Markus W. Scherer
*
*   Implementations for mostly non-core Unicode character properties
*   stored in uprops.icu.
*
*   With the APIs implemented here, almost all properties files and
*   their associated implementation files are used from this file,
*   including those for normalization and case mappings.
*/

#include "unicode/utypes.h"
#include "unicode/uchar.h"
#include "unicode/ucptrie.h"
#include "unicode/udata.h"
#include "unicode/unorm2.h"
#include "unicode/uscript.h"
#include "unicode/ustring.h"
#include "unicode/utf16.h"
#include "cstring.h"
#include "emojiprops.h"
#include "mutex.h"
#include "normalizer2impl.h"
#include "umutex.h"
#include "ubidi_props.h"
#include "uprops.h"
#include "ucase.h"
#include "ucln_cmn.h"
#include "ulayout_props.h"
#include "ustr_imp.h"

U_NAMESPACE_USE

// Unicode text layout properties data -----------------------------------------

namespace {

icu::UInitOnce gLayoutInitOnce = U_INITONCE_INITIALIZER;
UDataMemory *gLayoutMemory = nullptr;

UCPTrie *gInpcTrie = nullptr;  // Indic_Positional_Category
UCPTrie *gInscTrie = nullptr;  // Indic_Syllabic_Category
UCPTrie *gVoTrie = nullptr;  // Vertical_Orientation

int32_t gMaxInpcValue = 0;
int32_t gMaxInscValue = 0;
int32_t gMaxVoValue = 0;

UBool U_CALLCONV uprops_cleanup() {
    udata_close(gLayoutMemory);
    gLayoutMemory = nullptr;

    ucptrie_close(gInpcTrie);
    gInpcTrie = nullptr;
    ucptrie_close(gInscTrie);
    gInscTrie = nullptr;
    ucptrie_close(gVoTrie);
    gVoTrie = nullptr;

    gMaxInpcValue = 0;
    gMaxInscValue = 0;
    gMaxVoValue = 0;

    gLayoutInitOnce.reset();
    return TRUE;
}

UBool U_CALLCONV
ulayout_isAcceptable(void * /*context*/,
                     const char * /* type */, const char * /*name*/,
                     const UDataInfo *pInfo) {
    return pInfo->size >= 20 &&
        pInfo->isBigEndian == U_IS_BIG_ENDIAN &&
        pInfo->charsetFamily == U_CHARSET_FAMILY &&
        pInfo->dataFormat[0] == ULAYOUT_FMT_0 &&
        pInfo->dataFormat[1] == ULAYOUT_FMT_1 &&
        pInfo->dataFormat[2] == ULAYOUT_FMT_2 &&
        pInfo->dataFormat[3] == ULAYOUT_FMT_3 &&
        pInfo->formatVersion[0] == 1;
}

// UInitOnce singleton initialization function
void U_CALLCONV ulayout_load(UErrorCode &errorCode) {
    gLayoutMemory = udata_openChoice(
        nullptr, ULAYOUT_DATA_TYPE, ULAYOUT_DATA_NAME,
        ulayout_isAcceptable, nullptr, &errorCode);
    if (U_FAILURE(errorCode)) { return; }

    const uint8_t *inBytes = (const uint8_t *)udata_getMemory(gLayoutMemory);
    const int32_t *inIndexes = (const int32_t *)inBytes;
    int32_t indexesLength = inIndexes[ULAYOUT_IX_INDEXES_LENGTH];
    if (indexesLength < 12) {
        errorCode = U_INVALID_FORMAT_ERROR;  // Not enough indexes.
        return;
    }
    int32_t offset = indexesLength * 4;
    int32_t top = inIndexes[ULAYOUT_IX_INPC_TRIE_TOP];
    int32_t trieSize = top - offset;
    if (trieSize >= 16) {
        gInpcTrie = ucptrie_openFromBinary(
            UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY,
            inBytes + offset, trieSize, nullptr, &errorCode);
    }
    offset = top;
    top = inIndexes[ULAYOUT_IX_INSC_TRIE_TOP];
    trieSize = top - offset;
    if (trieSize >= 16) {
        gInscTrie = ucptrie_openFromBinary(
            UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY,
            inBytes + offset, trieSize, nullptr, &errorCode);
    }
    offset = top;
    top = inIndexes[ULAYOUT_IX_VO_TRIE_TOP];
    trieSize = top - offset;
    if (trieSize >= 16) {
        gVoTrie = ucptrie_openFromBinary(
            UCPTRIE_TYPE_ANY, UCPTRIE_VALUE_BITS_ANY,
            inBytes + offset, trieSize, nullptr, &errorCode);
    }

    uint32_t maxValues = inIndexes[ULAYOUT_IX_MAX_VALUES];
    gMaxInpcValue = maxValues >> ULAYOUT_MAX_INPC_SHIFT;
    gMaxInscValue = (maxValues >> ULAYOUT_MAX_INSC_SHIFT) & 0xff;
    gMaxVoValue = (maxValues >> ULAYOUT_MAX_VO_SHIFT) & 0xff;

    ucln_common_registerCleanup(UCLN_COMMON_UPROPS, uprops_cleanup);
}

UBool ulayout_ensureData(UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return FALSE; }
    umtx_initOnce(gLayoutInitOnce, &ulayout_load, errorCode);
    return U_SUCCESS(errorCode);
}

UBool ulayout_ensureData() {
    UErrorCode errorCode = U_ZERO_ERROR;
    return ulayout_ensureData(errorCode);
}

}  // namespace

/* general properties API functions ----------------------------------------- */

struct BinaryProperty;

typedef UBool BinaryPropertyContains(const BinaryProperty &prop, UChar32 c, UProperty which);

struct BinaryProperty {
    int32_t column;  // SRC_PROPSVEC column, or "source" if mask==0
    uint32_t mask;
    BinaryPropertyContains *contains;
};

static UBool defaultContains(const BinaryProperty &prop, UChar32 c, UProperty /*which*/) {
    /* systematic, directly stored properties */
    return (u_getUnicodeProperties(c, prop.column)&prop.mask)!=0;
}

static UBool caseBinaryPropertyContains(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
    return static_cast<UBool>(ucase_hasBinaryProperty(c, which));
}

static UBool isBidiControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return ubidi_isBidiControl(c);
}

static UBool isMirrored(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return ubidi_isMirrored(c);
}

static UBool isJoinControl(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return ubidi_isJoinControl(c);
}

#if UCONFIG_NO_NORMALIZATION
static UBool hasFullCompositionExclusion(const BinaryProperty &, UChar32, UProperty) {
    return FALSE;
}
#else
static UBool hasFullCompositionExclusion(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    // By definition, Full_Composition_Exclusion is the same as NFC_QC=No.
    UErrorCode errorCode=U_ZERO_ERROR;
    const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
    return U_SUCCESS(errorCode) && impl->isCompNo(impl->getNorm16(c));
}
#endif

// UCHAR_NF*_INERT properties
#if UCONFIG_NO_NORMALIZATION
static UBool isNormInert(const BinaryProperty &, UChar32, UProperty) {
    return FALSE;
}
#else
static UBool isNormInert(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
    UErrorCode errorCode=U_ZERO_ERROR;
    const Normalizer2 *norm2=Normalizer2Factory::getInstance(
        (UNormalizationMode)(which-UCHAR_NFD_INERT+UNORM_NFD), errorCode);
    return U_SUCCESS(errorCode) && norm2->isInert(c);
}
#endif

#if UCONFIG_NO_NORMALIZATION
static UBool changesWhenCasefolded(const BinaryProperty &, UChar32, UProperty) {
    return FALSE;
}
#else
static UBool changesWhenCasefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    UnicodeString nfd;
    UErrorCode errorCode=U_ZERO_ERROR;
    const Normalizer2 *nfcNorm2=Normalizer2::getNFCInstance(errorCode);
    if(U_FAILURE(errorCode)) {
        return FALSE;
    }
    if(nfcNorm2->getDecomposition(c, nfd)) {
        /* c has a decomposition */
        if(nfd.length()==1) {
            c=nfd[0];  /* single BMP code point */
        } else if(nfd.length()<=U16_MAX_LENGTH &&
                  nfd.length()==U16_LENGTH(c=nfd.char32At(0))
        ) {
            /* single supplementary code point */
        } else {
            c=U_SENTINEL;
        }
    } else if(c<0) {
        return FALSE;  /* protect against bad input */
    }
    if(c>=0) {
        /* single code point */
        const UChar *resultString;
        return (UBool)(ucase_toFullFolding(c, &resultString, U_FOLD_CASE_DEFAULT)>=0);
    } else {
        /* guess some large but stack-friendly capacity */
        UChar dest[2*UCASE_MAX_STRING_LENGTH];
        int32_t destLength;
        destLength=u_strFoldCase(dest, UPRV_LENGTHOF(dest),
                                  nfd.getBuffer(), nfd.length(),
                                  U_FOLD_CASE_DEFAULT, &errorCode);
        return (UBool)(U_SUCCESS(errorCode) &&
                       0!=u_strCompare(nfd.getBuffer(), nfd.length(),
                                       dest, destLength, FALSE));
    }
}
#endif

#if UCONFIG_NO_NORMALIZATION
static UBool changesWhenNFKC_Casefolded(const BinaryProperty &, UChar32, UProperty) {
    return FALSE;
}
#else
static UBool changesWhenNFKC_Casefolded(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    UErrorCode errorCode=U_ZERO_ERROR;
    const Normalizer2Impl *kcf=Normalizer2Factory::getNFKC_CFImpl(errorCode);
    if(U_FAILURE(errorCode)) {
        return FALSE;
    }
    UnicodeString src(c);
    UnicodeString dest;
    {
        // The ReorderingBuffer must be in a block because its destructor
        // needs to release dest's buffer before we look at its contents.
        ReorderingBuffer buffer(*kcf, dest);
        // Small destCapacity for NFKC_CF(c).
        if(buffer.init(5, errorCode)) {
            const UChar *srcArray=src.getBuffer();
            kcf->compose(srcArray, srcArray+src.length(), FALSE,
                          TRUE, buffer, errorCode);
        }
    }
    return U_SUCCESS(errorCode) && dest!=src;
}
#endif

#if UCONFIG_NO_NORMALIZATION
static UBool isCanonSegmentStarter(const BinaryProperty &, UChar32, UProperty) {
    return FALSE;
}
#else
static UBool isCanonSegmentStarter(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    UErrorCode errorCode=U_ZERO_ERROR;
    const Normalizer2Impl *impl=Normalizer2Factory::getNFCImpl(errorCode);
    return
        U_SUCCESS(errorCode) && impl->ensureCanonIterData(errorCode) &&
        impl->isCanonSegmentStarter(c);
}
#endif

static UBool isPOSIX_alnum(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return u_isalnumPOSIX(c);
}

static UBool isPOSIX_blank(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return u_isblank(c);
}

static UBool isPOSIX_graph(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return u_isgraphPOSIX(c);
}

static UBool isPOSIX_print(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return u_isprintPOSIX(c);
}

static UBool isPOSIX_xdigit(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return u_isxdigit(c);
}

static UBool isRegionalIndicator(const BinaryProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    // Property starts are a subset of lb=RI etc.
    return 0x1F1E6<=c && c<=0x1F1FF;
}

static UBool hasEmojiProperty(const BinaryProperty &/*prop*/, UChar32 c, UProperty which) {
    return EmojiProps::hasBinaryProperty(c, which);
}

static const BinaryProperty binProps[UCHAR_BINARY_LIMIT]={
    /*
     * column and mask values for binary properties from u_getUnicodeProperties().
     * Must be in order of corresponding UProperty,
     * and there must be exactly one entry per binary UProperty.
     *
     * Properties with mask==0 are handled in code.
     * For them, column is the UPropertySource value.
     */
    { 1,                U_MASK(UPROPS_ALPHABETIC), defaultContains },
    { 1,                U_MASK(UPROPS_ASCII_HEX_DIGIT), defaultContains },
    { UPROPS_SRC_BIDI,  0, isBidiControl },
    { UPROPS_SRC_BIDI,  0, isMirrored },
    { 1,                U_MASK(UPROPS_DASH), defaultContains },
    { 1,                U_MASK(UPROPS_DEFAULT_IGNORABLE_CODE_POINT), defaultContains },
    { 1,                U_MASK(UPROPS_DEPRECATED), defaultContains },
    { 1,                U_MASK(UPROPS_DIACRITIC), defaultContains },
    { 1,                U_MASK(UPROPS_EXTENDER), defaultContains },
    { UPROPS_SRC_NFC,   0, hasFullCompositionExclusion },
    { 1,                U_MASK(UPROPS_GRAPHEME_BASE), defaultContains },
    { 1,                U_MASK(UPROPS_GRAPHEME_EXTEND), defaultContains },
    { 1,                U_MASK(UPROPS_GRAPHEME_LINK), defaultContains },
    { 1,                U_MASK(UPROPS_HEX_DIGIT), defaultContains },
    { 1,                U_MASK(UPROPS_HYPHEN), defaultContains },
    { 1,                U_MASK(UPROPS_ID_CONTINUE), defaultContains },
    { 1,                U_MASK(UPROPS_ID_START), defaultContains },
    { 1,                U_MASK(UPROPS_IDEOGRAPHIC), defaultContains },
    { 1,                U_MASK(UPROPS_IDS_BINARY_OPERATOR), defaultContains },
    { 1,                U_MASK(UPROPS_IDS_TRINARY_OPERATOR), defaultContains },
    { UPROPS_SRC_BIDI,  0, isJoinControl },
    { 1,                U_MASK(UPROPS_LOGICAL_ORDER_EXCEPTION), defaultContains },
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_LOWERCASE
    { 1,                U_MASK(UPROPS_MATH), defaultContains },
    { 1,                U_MASK(UPROPS_NONCHARACTER_CODE_POINT), defaultContains },
    { 1,                U_MASK(UPROPS_QUOTATION_MARK), defaultContains },
    { 1,                U_MASK(UPROPS_RADICAL), defaultContains },
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_SOFT_DOTTED
    { 1,                U_MASK(UPROPS_TERMINAL_PUNCTUATION), defaultContains },
    { 1,                U_MASK(UPROPS_UNIFIED_IDEOGRAPH), defaultContains },
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_UPPERCASE
    { 1,                U_MASK(UPROPS_WHITE_SPACE), defaultContains },
    { 1,                U_MASK(UPROPS_XID_CONTINUE), defaultContains },
    { 1,                U_MASK(UPROPS_XID_START), defaultContains },
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_CASE_SENSITIVE
    { 1,                U_MASK(UPROPS_S_TERM), defaultContains },
    { 1,                U_MASK(UPROPS_VARIATION_SELECTOR), defaultContains },
    { UPROPS_SRC_NFC,   0, isNormInert },  // UCHAR_NFD_INERT
    { UPROPS_SRC_NFKC,  0, isNormInert },  // UCHAR_NFKD_INERT
    { UPROPS_SRC_NFC,   0, isNormInert },  // UCHAR_NFC_INERT
    { UPROPS_SRC_NFKC,  0, isNormInert },  // UCHAR_NFKC_INERT
    { UPROPS_SRC_NFC_CANON_ITER, 0, isCanonSegmentStarter },
    { 1,                U_MASK(UPROPS_PATTERN_SYNTAX), defaultContains },
    { 1,                U_MASK(UPROPS_PATTERN_WHITE_SPACE), defaultContains },
    { UPROPS_SRC_CHAR_AND_PROPSVEC,  0, isPOSIX_alnum },
    { UPROPS_SRC_CHAR,  0, isPOSIX_blank },
    { UPROPS_SRC_CHAR,  0, isPOSIX_graph },
    { UPROPS_SRC_CHAR,  0, isPOSIX_print },
    { UPROPS_SRC_CHAR,  0, isPOSIX_xdigit },
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_CASED
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_CASE_IGNORABLE
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_CHANGES_WHEN_LOWERCASED
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_CHANGES_WHEN_UPPERCASED
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_CHANGES_WHEN_TITLECASED
    { UPROPS_SRC_CASE_AND_NORM,  0, changesWhenCasefolded },
    { UPROPS_SRC_CASE,  0, caseBinaryPropertyContains },  // UCHAR_CHANGES_WHEN_CASEMAPPED
    { UPROPS_SRC_NFKC_CF, 0, changesWhenNFKC_Casefolded },
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_EMOJI
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_EMOJI_PRESENTATION
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_EMOJI_MODIFIER
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_EMOJI_MODIFIER_BASE
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_EMOJI_COMPONENT
    { 2,                0, isRegionalIndicator },
    { 1,                U_MASK(UPROPS_PREPENDED_CONCATENATION_MARK), defaultContains },
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_EXTENDED_PICTOGRAPHIC
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_BASIC_EMOJI
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_EMOJI_KEYCAP_SEQUENCE
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_RGI_EMOJI_MODIFIER_SEQUENCE
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_RGI_EMOJI_FLAG_SEQUENCE
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_RGI_EMOJI_TAG_SEQUENCE
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_RGI_EMOJI_ZWJ_SEQUENCE
    { UPROPS_SRC_EMOJI, 0, hasEmojiProperty },  // UCHAR_RGI_EMOJI
};

U_CAPI UBool U_EXPORT2
u_hasBinaryProperty(UChar32 c, UProperty which) {
    /* c is range-checked in the functions that are called from here */
    if(which<UCHAR_BINARY_START || UCHAR_BINARY_LIMIT<=which) {
        /* not a known binary property */
        return FALSE;
    } else {
        const BinaryProperty &prop=binProps[which];
        return prop.contains(prop, c, which);
    }
}

U_CAPI UBool U_EXPORT2
u_stringHasBinaryProperty(const UChar *s, int32_t length, UProperty which) {
    if (s == nullptr && length != 0) { return false; }
    if (length == 1) {
        return u_hasBinaryProperty(s[0], which);  // single code point
    } else if (length == 2 || (length < 0 && *s != 0)) {  // not empty string
        // first code point
        int32_t i = 0;
        UChar32 c;
        U16_NEXT(s, i, length, c);
        if (length > 0 ? i == length : s[i] == 0) {
            return u_hasBinaryProperty(c, which);  // single code point
        }
    }
    // Only call into EmojiProps for a relevant property,
    // so that we not unnecessarily try to load its data file.
    return UCHAR_BASIC_EMOJI <= which && which <= UCHAR_RGI_EMOJI &&
        EmojiProps::hasBinaryProperty(s, length, which);
}

struct IntProperty;

typedef int32_t IntPropertyGetValue(const IntProperty &prop, UChar32 c, UProperty which);
typedef int32_t IntPropertyGetMaxValue(const IntProperty &prop, UProperty which);

struct IntProperty {
    int32_t column;  // SRC_PROPSVEC column, or "source" if mask==0
    uint32_t mask;
    int32_t shift;  // =maxValue if getMaxValueFromShift() is used
    IntPropertyGetValue *getValue;
    IntPropertyGetMaxValue *getMaxValue;
};

static int32_t defaultGetValue(const IntProperty &prop, UChar32 c, UProperty /*which*/) {
    /* systematic, directly stored properties */
    return (int32_t)(u_getUnicodeProperties(c, prop.column)&prop.mask)>>prop.shift;
}

static int32_t defaultGetMaxValue(const IntProperty &prop, UProperty /*which*/) {
    return (uprv_getMaxValues(prop.column)&prop.mask)>>prop.shift;
}

static int32_t getMaxValueFromShift(const IntProperty &prop, UProperty /*which*/) {
    return prop.shift;
}

static int32_t getBiDiClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return (int32_t)u_charDirection(c);
}

static int32_t getBiDiPairedBracketType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return (int32_t)ubidi_getPairedBracketType(c);
}

static int32_t biDiGetMaxValue(const IntProperty &/*prop*/, UProperty which) {
    return ubidi_getMaxValue(which);
}

#if UCONFIG_NO_NORMALIZATION
static int32_t getCombiningClass(const IntProperty &, UChar32, UProperty) {
    return 0;
}
#else
static int32_t getCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return u_getCombiningClass(c);
}
#endif

static int32_t getGeneralCategory(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return (int32_t)u_charType(c);
}

static int32_t getJoiningGroup(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return ubidi_getJoiningGroup(c);
}

static int32_t getJoiningType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return ubidi_getJoiningType(c);
}

static int32_t getNumericType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    int32_t ntv=(int32_t)GET_NUMERIC_TYPE_VALUE(u_getMainProperties(c));
    return UPROPS_NTV_GET_TYPE(ntv);
}

static int32_t getScript(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    UErrorCode errorCode=U_ZERO_ERROR;
    return (int32_t)uscript_getScript(c, &errorCode);
}

static int32_t scriptGetMaxValue(const IntProperty &/*prop*/, UProperty /*which*/) {
    uint32_t scriptX=uprv_getMaxValues(0)&UPROPS_SCRIPT_X_MASK;
    return uprops_mergeScriptCodeOrIndex(scriptX);
}

/*
 * Map some of the Grapheme Cluster Break values to Hangul Syllable Types.
 * Hangul_Syllable_Type is fully redundant with a subset of Grapheme_Cluster_Break.
 */
static const UHangulSyllableType gcbToHst[]={
    U_HST_NOT_APPLICABLE,   /* U_GCB_OTHER */
    U_HST_NOT_APPLICABLE,   /* U_GCB_CONTROL */
    U_HST_NOT_APPLICABLE,   /* U_GCB_CR */
    U_HST_NOT_APPLICABLE,   /* U_GCB_EXTEND */
    U_HST_LEADING_JAMO,     /* U_GCB_L */
    U_HST_NOT_APPLICABLE,   /* U_GCB_LF */
    U_HST_LV_SYLLABLE,      /* U_GCB_LV */
    U_HST_LVT_SYLLABLE,     /* U_GCB_LVT */
    U_HST_TRAILING_JAMO,    /* U_GCB_T */
    U_HST_VOWEL_JAMO        /* U_GCB_V */
    /*
     * Omit GCB values beyond what we need for hst.
     * The code below checks for the array length.
     */
};

static int32_t getHangulSyllableType(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    /* see comments on gcbToHst[] above */
    int32_t gcb=(int32_t)(u_getUnicodeProperties(c, 2)&UPROPS_GCB_MASK)>>UPROPS_GCB_SHIFT;
    if(gcb<UPRV_LENGTHOF(gcbToHst)) {
        return gcbToHst[gcb];
    } else {
        return U_HST_NOT_APPLICABLE;
    }
}

#if UCONFIG_NO_NORMALIZATION
static int32_t getNormQuickCheck(const IntProperty &, UChar32, UProperty) {
    return 0;
}
#else
static int32_t getNormQuickCheck(const IntProperty &/*prop*/, UChar32 c, UProperty which) {
    return (int32_t)unorm_getQuickCheck(c, (UNormalizationMode)(which-UCHAR_NFD_QUICK_CHECK+UNORM_NFD));
}
#endif

#if UCONFIG_NO_NORMALIZATION
static int32_t getLeadCombiningClass(const IntProperty &, UChar32, UProperty) {
    return 0;
}
#else
static int32_t getLeadCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return unorm_getFCD16(c)>>8;
}
#endif

#if UCONFIG_NO_NORMALIZATION
static int32_t getTrailCombiningClass(const IntProperty &, UChar32, UProperty) {
    return 0;
}
#else
static int32_t getTrailCombiningClass(const IntProperty &/*prop*/, UChar32 c, UProperty /*which*/) {
    return unorm_getFCD16(c)&0xff;
}
#endif

static int32_t getInPC(const IntProperty &, UChar32 c, UProperty) {
    return ulayout_ensureData() && gInpcTrie != nullptr ? ucptrie_get(gInpcTrie, c) : 0;
}

static int32_t getInSC(const IntProperty &, UChar32 c, UProperty) {
    return ulayout_ensureData() && gInscTrie != nullptr ? ucptrie_get(gInscTrie, c) : 0;
}

static int32_t getVo(const IntProperty &, UChar32 c, UProperty) {
    return ulayout_ensureData() && gVoTrie != nullptr ? ucptrie_get(gVoTrie, c) : 0;
}

static int32_t layoutGetMaxValue(const IntProperty &/*prop*/, UProperty which) {
    if (!ulayout_ensureData()) { return 0; }
    switch (which) {
    case UCHAR_INDIC_POSITIONAL_CATEGORY:
        return gMaxInpcValue;
    case UCHAR_INDIC_SYLLABIC_CATEGORY:
        return gMaxInscValue;
    case UCHAR_VERTICAL_ORIENTATION:
        return gMaxVoValue;
    default:
        return 0;
    }
}

static const IntProperty intProps[UCHAR_INT_LIMIT-UCHAR_INT_START]={
    /*
     * column, mask and shift values for int-value properties from u_getUnicodeProperties().
     * Must be in order of corresponding UProperty,
     * and there must be exactly one entry per int UProperty.
     *
     * Properties with mask==0 are handled in code.
     * For them, column is the UPropertySource value.
     */
    { UPROPS_SRC_BIDI,  0, 0,                               getBiDiClass, biDiGetMaxValue },
    { 0,                UPROPS_BLOCK_MASK, UPROPS_BLOCK_SHIFT, defaultGetValue, defaultGetMaxValue },
    { UPROPS_SRC_NFC,   0, 0xff,                            getCombiningClass, getMaxValueFromShift },
    { 2,                UPROPS_DT_MASK, 0,                  defaultGetValue, defaultGetMaxValue },
    { 0,                UPROPS_EA_MASK, UPROPS_EA_SHIFT,    defaultGetValue, defaultGetMaxValue },
    { UPROPS_SRC_CHAR,  0, (int32_t)U_CHAR_CATEGORY_COUNT-1,getGeneralCategory, getMaxValueFromShift },
    { UPROPS_SRC_BIDI,  0, 0,                               getJoiningGroup, biDiGetMaxValue },
    { UPROPS_SRC_BIDI,  0, 0,                               getJoiningType, biDiGetMaxValue },
    { 2,                UPROPS_LB_MASK, UPROPS_LB_SHIFT,    defaultGetValue, defaultGetMaxValue },
    { UPROPS_SRC_CHAR,  0, (int32_t)U_NT_COUNT-1,           getNumericType, getMaxValueFromShift },
    { UPROPS_SRC_PROPSVEC, 0, 0,                            getScript, scriptGetMaxValue },
    { UPROPS_SRC_PROPSVEC, 0, (int32_t)U_HST_COUNT-1,       getHangulSyllableType, getMaxValueFromShift },
    // UCHAR_NFD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes"
    { UPROPS_SRC_NFC,   0, (int32_t)UNORM_YES,              getNormQuickCheck, getMaxValueFromShift },
    // UCHAR_NFKD_QUICK_CHECK: max=1=YES -- never "maybe", only "no" or "yes"
    { UPROPS_SRC_NFKC,  0, (int32_t)UNORM_YES,              getNormQuickCheck, getMaxValueFromShift },
    // UCHAR_NFC_QUICK_CHECK: max=2=MAYBE
    { UPROPS_SRC_NFC,   0, (int32_t)UNORM_MAYBE,            getNormQuickCheck, getMaxValueFromShift },
    // UCHAR_NFKC_QUICK_CHECK: max=2=MAYBE
    { UPROPS_SRC_NFKC,  0, (int32_t)UNORM_MAYBE,            getNormQuickCheck, getMaxValueFromShift },
    { UPROPS_SRC_NFC,   0, 0xff,                            getLeadCombiningClass, getMaxValueFromShift },
    { UPROPS_SRC_NFC,   0, 0xff,                            getTrailCombiningClass, getMaxValueFromShift },
    { 2,                UPROPS_GCB_MASK, UPROPS_GCB_SHIFT,  defaultGetValue, defaultGetMaxValue },
    { 2,                UPROPS_SB_MASK, UPROPS_SB_SHIFT,    defaultGetValue, defaultGetMaxValue },
    { 2,                UPROPS_WB_MASK, UPROPS_WB_SHIFT,    defaultGetValue, defaultGetMaxValue },
    { UPROPS_SRC_BIDI,  0, 0,                               getBiDiPairedBracketType, biDiGetMaxValue },
    { UPROPS_SRC_INPC,  0, 0,                               getInPC, layoutGetMaxValue },
    { UPROPS_SRC_INSC,  0, 0,                               getInSC, layoutGetMaxValue },
    { UPROPS_SRC_VO,    0, 0,                               getVo, layoutGetMaxValue },
};

U_CAPI int32_t U_EXPORT2
u_getIntPropertyValue(UChar32 c, UProperty which) {
    if(which<UCHAR_INT_START) {
        if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) {
            const BinaryProperty &prop=binProps[which];
            return prop.contains(prop, c, which);
        }
    } else if(which<UCHAR_INT_LIMIT) {
        const IntProperty &prop=intProps[which-UCHAR_INT_START];
        return prop.getValue(prop, c, which);
    } else if(which==UCHAR_GENERAL_CATEGORY_MASK) {
        return U_MASK(u_charType(c));
    }
    return 0;  // undefined
}

U_CAPI int32_t U_EXPORT2
u_getIntPropertyMinValue(UProperty /*which*/) {
    return 0; /* all binary/enum/int properties have a minimum value of 0 */
}

U_CAPI int32_t U_EXPORT2
u_getIntPropertyMaxValue(UProperty which) {
    if(which<UCHAR_INT_START) {
        if(UCHAR_BINARY_START<=which && which<UCHAR_BINARY_LIMIT) {
            return 1;  // maximum TRUE for all binary properties
        }
    } else if(which<UCHAR_INT_LIMIT) {
        const IntProperty &prop=intProps[which-UCHAR_INT_START];
        return prop.getMaxValue(prop, which);
    }
    return -1;  // undefined
}

U_CFUNC UPropertySource U_EXPORT2
uprops_getSource(UProperty which) {
    if(which<UCHAR_BINARY_START) {
        return UPROPS_SRC_NONE; /* undefined */
    } else if(which<UCHAR_BINARY_LIMIT) {
        const BinaryProperty &prop=binProps[which];
        if(prop.mask!=0) {
            return UPROPS_SRC_PROPSVEC;
        } else {
            return (UPropertySource)prop.column;
        }
    } else if(which<UCHAR_INT_START) {
        return UPROPS_SRC_NONE; /* undefined */
    } else if(which<UCHAR_INT_LIMIT) {
        const IntProperty &prop=intProps[which-UCHAR_INT_START];
        if(prop.mask!=0) {
            return UPROPS_SRC_PROPSVEC;
        } else {
            return (UPropertySource)prop.column;
        }
    } else if(which<UCHAR_STRING_START) {
        switch(which) {
        case UCHAR_GENERAL_CATEGORY_MASK:
        case UCHAR_NUMERIC_VALUE:
            return UPROPS_SRC_CHAR;

        default:
            return UPROPS_SRC_NONE;
        }
    } else if(which<UCHAR_STRING_LIMIT) {
        switch(which) {
        case UCHAR_AGE:
            return UPROPS_SRC_PROPSVEC;

        case UCHAR_BIDI_MIRRORING_GLYPH:
            return UPROPS_SRC_BIDI;

        case UCHAR_CASE_FOLDING:
        case UCHAR_LOWERCASE_MAPPING:
        case UCHAR_SIMPLE_CASE_FOLDING:
        case UCHAR_SIMPLE_LOWERCASE_MAPPING:
        case UCHAR_SIMPLE_TITLECASE_MAPPING:
        case UCHAR_SIMPLE_UPPERCASE_MAPPING:
        case UCHAR_TITLECASE_MAPPING:
        case UCHAR_UPPERCASE_MAPPING:
            return UPROPS_SRC_CASE;

        case UCHAR_ISO_COMMENT:
        case UCHAR_NAME:
        case UCHAR_UNICODE_1_NAME:
            return UPROPS_SRC_NAMES;

        default:
            return UPROPS_SRC_NONE;
        }
    } else {
        switch(which) {
        case UCHAR_SCRIPT_EXTENSIONS:
            return UPROPS_SRC_PROPSVEC;
        default:
            return UPROPS_SRC_NONE; /* undefined */
        }
    }
}

U_CFUNC void U_EXPORT2
uprops_addPropertyStarts(UPropertySource src, const USetAdder *sa, UErrorCode *pErrorCode) {
    if (!ulayout_ensureData(*pErrorCode)) { return; }
    const UCPTrie *trie;
    switch (src) {
    case UPROPS_SRC_INPC:
        trie = gInpcTrie;
        break;
    case UPROPS_SRC_INSC:
        trie = gInscTrie;
        break;
    case UPROPS_SRC_VO:
        trie = gVoTrie;
        break;
    default:
        *pErrorCode = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }

    if (trie == nullptr) {
        *pErrorCode = U_MISSING_RESOURCE_ERROR;
        return;
    }

    // Add the start code point of each same-value range of the trie.
    UChar32 start = 0, end;
    while ((end = ucptrie_getRange(trie, start, UCPMAP_RANGE_NORMAL, 0,
                                   nullptr, nullptr, nullptr)) >= 0) {
        sa->add(sa->set, start);
        start = end + 1;
    }
}

#if !UCONFIG_NO_NORMALIZATION

U_CAPI int32_t U_EXPORT2
u_getFC_NFKC_Closure(UChar32 c, UChar *dest, int32_t destCapacity, UErrorCode *pErrorCode) {
    if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
        return 0;
    }
    if(destCapacity<0 || (dest==NULL && destCapacity>0)) {
        *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }
    // Compute the FC_NFKC_Closure on the fly:
    // We have the API for complete coverage of Unicode properties, although
    // this value by itself is not useful via API.
    // (What could be useful is a custom normalization table that combines
    // case folding and NFKC.)
    // For the derivation, see Unicode's DerivedNormalizationProps.txt.
    const Normalizer2 *nfkc=Normalizer2::getNFKCInstance(*pErrorCode);
    if(U_FAILURE(*pErrorCode)) {
        return 0;
    }
    // first: b = NFKC(Fold(a))
    UnicodeString folded1String;
    const UChar *folded1;
    int32_t folded1Length=ucase_toFullFolding(c, &folded1, U_FOLD_CASE_DEFAULT);
    if(folded1Length<0) {
        const Normalizer2Impl *nfkcImpl=Normalizer2Factory::getImpl(nfkc);
        if(nfkcImpl->getCompQuickCheck(nfkcImpl->getNorm16(c))!=UNORM_NO) {
            return u_terminateUChars(dest, destCapacity, 0, pErrorCode);  // c does not change at all under CaseFolding+NFKC
        }
        folded1String.setTo(c);
    } else {
        if(folded1Length>UCASE_MAX_STRING_LENGTH) {
            folded1String.setTo(folded1Length);
        } else {
            folded1String.setTo(FALSE, folded1, folded1Length);
        }
    }
    UnicodeString kc1=nfkc->normalize(folded1String, *pErrorCode);
    // second: c = NFKC(Fold(b))
    UnicodeString folded2String(kc1);
    UnicodeString kc2=nfkc->normalize(folded2String.foldCase(), *pErrorCode);
    // if (c != b) add the mapping from a to c
    if(U_FAILURE(*pErrorCode) || kc1==kc2) {
        return u_terminateUChars(dest, destCapacity, 0, pErrorCode);
    } else {
        return kc2.extract(dest, destCapacity, *pErrorCode);
    }
}

#endif