DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (b6d82b1a6b02)

VCS Links

Line Code
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
// © 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 "cstring.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 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 },
    { 2,                U_MASK(UPROPS_2_EMOJI), defaultContains },
    { 2,                U_MASK(UPROPS_2_EMOJI_PRESENTATION), defaultContains },
    { 2,                U_MASK(UPROPS_2_EMOJI_MODIFIER), defaultContains },
    { 2,                U_MASK(UPROPS_2_EMOJI_MODIFIER_BASE), defaultContains },
    { 2,                U_MASK(UPROPS_2_EMOJI_COMPONENT), defaultContains },
    { 2,                0, isRegionalIndicator },
    { 1,                U_MASK(UPROPS_PREPENDED_CONCATENATION_MARK), defaultContains },
    { 2,                U_MASK(UPROPS_2_EXTENDED_PICTOGRAPHIC), defaultContains },
};

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);
    }
}

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);
}

/*
 * 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 },
    { 0,                UPROPS_SCRIPT_MASK, 0,              getScript, defaultGetMaxValue },
    { 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