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.

Mercurial (31ec81b5d7bb)

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814
//
//  file:  repattrn.cpp
//
/*
***************************************************************************
*   Copyright (C) 2002-2012 International Business Machines Corporation   *
*   and others. All rights reserved.                                      *
***************************************************************************
*/

#include "unicode/utypes.h"

#if !UCONFIG_NO_REGULAR_EXPRESSIONS

#include "unicode/regex.h"
#include "unicode/uclean.h"
#include "uassert.h"
#include "uvector.h"
#include "uvectr32.h"
#include "uvectr64.h"
#include "regexcmp.h"
#include "regeximp.h"
#include "regexst.h"

U_NAMESPACE_BEGIN

//--------------------------------------------------------------------------
//
//    RegexPattern    Default Constructor
//
//--------------------------------------------------------------------------
RegexPattern::RegexPattern() {
    // Init all of this instances data.
    init();
}


//--------------------------------------------------------------------------
//
//   Copy Constructor        Note:  This is a rather inefficient implementation,
//                                  but it probably doesn't matter.
//
//--------------------------------------------------------------------------
RegexPattern::RegexPattern(const RegexPattern &other) :  UObject(other) {
    init();
    *this = other;
}



//--------------------------------------------------------------------------
//
//    Assignment Operator
//
//--------------------------------------------------------------------------
RegexPattern &RegexPattern::operator = (const RegexPattern &other) {
    if (this == &other) {
        // Source and destination are the same.  Don't do anything.
        return *this;
    }

    // Clean out any previous contents of object being assigned to.
    zap();

    // Give target object a default initialization
    init();

    // Copy simple fields
    if ( other.fPatternString == NULL ) {
        fPatternString = NULL;
        fPattern      = utext_clone(fPattern, other.fPattern, FALSE, TRUE, &fDeferredStatus);
    } else {
        fPatternString = new UnicodeString(*(other.fPatternString));
        UErrorCode status = U_ZERO_ERROR;
        fPattern      = utext_openConstUnicodeString(NULL, fPatternString, &status);
        if (U_FAILURE(status)) {
            fDeferredStatus = U_MEMORY_ALLOCATION_ERROR;
            return *this;
        }
    }
    fFlags            = other.fFlags;
    fLiteralText      = other.fLiteralText;
    fDeferredStatus   = other.fDeferredStatus;
    fMinMatchLen      = other.fMinMatchLen;
    fFrameSize        = other.fFrameSize;
    fDataSize         = other.fDataSize;
    fMaxCaptureDigits = other.fMaxCaptureDigits;
    fStaticSets       = other.fStaticSets;
    fStaticSets8      = other.fStaticSets8;

    fStartType        = other.fStartType;
    fInitialStringIdx = other.fInitialStringIdx;
    fInitialStringLen = other.fInitialStringLen;
    *fInitialChars    = *other.fInitialChars;
    fInitialChar      = other.fInitialChar;
    *fInitialChars8   = *other.fInitialChars8;
    fNeedsAltInput    = other.fNeedsAltInput;

    //  Copy the pattern.  It's just values, nothing deep to copy.
    fCompiledPat->assign(*other.fCompiledPat, fDeferredStatus);
    fGroupMap->assign(*other.fGroupMap, fDeferredStatus);

    //  Copy the Unicode Sets.
    //    Could be made more efficient if the sets were reference counted and shared,
    //    but I doubt that pattern copying will be particularly common.
    //    Note:  init() already added an empty element zero to fSets
    int32_t i;
    int32_t  numSets = other.fSets->size();
    fSets8 = new Regex8BitSet[numSets];
    if (fSets8 == NULL) {
    	fDeferredStatus = U_MEMORY_ALLOCATION_ERROR;
    	return *this;
    }
    for (i=1; i<numSets; i++) {
        if (U_FAILURE(fDeferredStatus)) {
            return *this;
        }
        UnicodeSet *sourceSet = (UnicodeSet *)other.fSets->elementAt(i);
        UnicodeSet *newSet    = new UnicodeSet(*sourceSet);
        if (newSet == NULL) {
            fDeferredStatus = U_MEMORY_ALLOCATION_ERROR;
            break;
        }
        fSets->addElement(newSet, fDeferredStatus);
        fSets8[i] = other.fSets8[i];
    }

    return *this;
}


//--------------------------------------------------------------------------
//
//    init        Shared initialization for use by constructors.
//                Bring an uninitialized RegexPattern up to a default state.
//
//--------------------------------------------------------------------------
void RegexPattern::init() {
    fFlags            = 0;
    fCompiledPat      = 0;
    fLiteralText.remove();
    fSets             = NULL;
    fSets8            = NULL;
    fDeferredStatus   = U_ZERO_ERROR;
    fMinMatchLen      = 0;
    fFrameSize        = 0;
    fDataSize         = 0;
    fGroupMap         = NULL;
    fMaxCaptureDigits = 1;
    fStaticSets       = NULL;
    fStaticSets8      = NULL;
    fStartType        = START_NO_INFO;
    fInitialStringIdx = 0;
    fInitialStringLen = 0;
    fInitialChars     = NULL;
    fInitialChar      = 0;
    fInitialChars8    = NULL;
    fNeedsAltInput    = FALSE;

    fPattern          = NULL; // will be set later
    fPatternString    = NULL; // may be set later
    fCompiledPat      = new UVector64(fDeferredStatus);
    fGroupMap         = new UVector32(fDeferredStatus);
    fSets             = new UVector(fDeferredStatus);
    fInitialChars     = new UnicodeSet;
    fInitialChars8    = new Regex8BitSet;
    if (U_FAILURE(fDeferredStatus)) {
        return;
    }
    if (fCompiledPat == NULL  || fGroupMap == NULL || fSets == NULL ||
        fInitialChars == NULL || fInitialChars8 == NULL) {
        fDeferredStatus = U_MEMORY_ALLOCATION_ERROR;
        return;
    }

    // Slot zero of the vector of sets is reserved.  Fill it here.
    fSets->addElement((int32_t)0, fDeferredStatus);
}


//--------------------------------------------------------------------------
//
//   zap            Delete everything owned by this RegexPattern.
//
//--------------------------------------------------------------------------
void RegexPattern::zap() {
    delete fCompiledPat;
    fCompiledPat = NULL;
    int i;
    for (i=1; i<fSets->size(); i++) {
        UnicodeSet *s;
        s = (UnicodeSet *)fSets->elementAt(i);
        if (s != NULL) {
            delete s;
        }
    }
    delete fSets;
    fSets = NULL;
    delete[] fSets8;
    fSets8 = NULL;
    delete fGroupMap;
    fGroupMap = NULL;
    delete fInitialChars;
    fInitialChars = NULL;
    delete fInitialChars8;
    fInitialChars8 = NULL;
    if (fPattern != NULL) {
        utext_close(fPattern);
        fPattern = NULL;
    }
    if (fPatternString != NULL) {
        delete fPatternString;
        fPatternString = NULL;
    }
}


//--------------------------------------------------------------------------
//
//   Destructor
//
//--------------------------------------------------------------------------
RegexPattern::~RegexPattern() {
    zap();
}


//--------------------------------------------------------------------------
//
//   Clone
//
//--------------------------------------------------------------------------
RegexPattern  *RegexPattern::clone() const {
    RegexPattern  *copy = new RegexPattern(*this);
    return copy;
}


//--------------------------------------------------------------------------
//
//   operator ==   (comparison)    Consider to patterns to be == if the
//                                 pattern strings and the flags are the same.
//                                 Note that pattern strings with the same
//                                 characters can still be considered different.
//
//--------------------------------------------------------------------------
UBool   RegexPattern::operator ==(const RegexPattern &other) const {
    if (this->fFlags == other.fFlags && this->fDeferredStatus == other.fDeferredStatus) {
        if (this->fPatternString != NULL && other.fPatternString != NULL) {
            return *(this->fPatternString) == *(other.fPatternString);
        } else if (this->fPattern == NULL) {
            if (other.fPattern == NULL) {
                return TRUE;
            }
        } else if (other.fPattern != NULL) {
            UTEXT_SETNATIVEINDEX(this->fPattern, 0);
            UTEXT_SETNATIVEINDEX(other.fPattern, 0);
            return utext_equals(this->fPattern, other.fPattern);
        }
    }
    return FALSE;
}

//---------------------------------------------------------------------
//
//   compile
//
//---------------------------------------------------------------------
RegexPattern * U_EXPORT2
RegexPattern::compile(const UnicodeString &regex,
                      uint32_t             flags,
                      UParseError          &pe,
                      UErrorCode           &status)
{
    if (U_FAILURE(status)) {
        return NULL;
    }
    
    const uint32_t allFlags = UREGEX_CANON_EQ | UREGEX_CASE_INSENSITIVE | UREGEX_COMMENTS |
    UREGEX_DOTALL   | UREGEX_MULTILINE        | UREGEX_UWORD |
    UREGEX_ERROR_ON_UNKNOWN_ESCAPES           | UREGEX_UNIX_LINES | UREGEX_LITERAL;
    
    if ((flags & ~allFlags) != 0) {
        status = U_REGEX_INVALID_FLAG;
        return NULL;
    }
    
    if ((flags & UREGEX_CANON_EQ) != 0) {
        status = U_REGEX_UNIMPLEMENTED;
        return NULL;
    }
    
    RegexPattern *This = new RegexPattern;
    if (This == NULL) {
        status = U_MEMORY_ALLOCATION_ERROR;
        return NULL;
    }
    if (U_FAILURE(This->fDeferredStatus)) {
        status = This->fDeferredStatus;
        delete This;
        return NULL;
    }
    This->fFlags = flags;
    
    RegexCompile     compiler(This, status);
    compiler.compile(regex, pe, status);
    
    if (U_FAILURE(status)) {
        delete This;
        This = NULL;
    }
    
    return This;
}


//
//   compile, UText mode
//
RegexPattern * U_EXPORT2
RegexPattern::compile(UText                *regex,
                      uint32_t             flags,
                      UParseError          &pe,
                      UErrorCode           &status)
{
    if (U_FAILURE(status)) {
        return NULL;
    }

    const uint32_t allFlags = UREGEX_CANON_EQ | UREGEX_CASE_INSENSITIVE | UREGEX_COMMENTS |
                              UREGEX_DOTALL   | UREGEX_MULTILINE        | UREGEX_UWORD |
                              UREGEX_ERROR_ON_UNKNOWN_ESCAPES           | UREGEX_UNIX_LINES | UREGEX_LITERAL;

    if ((flags & ~allFlags) != 0) {
        status = U_REGEX_INVALID_FLAG;
        return NULL;
    }

    if ((flags & UREGEX_CANON_EQ) != 0) {
        status = U_REGEX_UNIMPLEMENTED;
        return NULL;
    }

    RegexPattern *This = new RegexPattern;
    if (This == NULL) {
        status = U_MEMORY_ALLOCATION_ERROR;
        return NULL;
    }
    if (U_FAILURE(This->fDeferredStatus)) {
        status = This->fDeferredStatus;
        delete This;
        return NULL;
    }
    This->fFlags = flags;

    RegexCompile     compiler(This, status);
    compiler.compile(regex, pe, status);
    
    if (U_FAILURE(status)) {
        delete This;
        This = NULL;
    }

    return This;
}

//
//   compile with default flags.
//
RegexPattern * U_EXPORT2
RegexPattern::compile(const UnicodeString &regex,
                      UParseError         &pe,
                      UErrorCode          &err)
{
    return compile(regex, 0, pe, err);
}


//
//   compile with default flags, UText mode
//
RegexPattern * U_EXPORT2
RegexPattern::compile(UText               *regex,
                      UParseError         &pe,
                      UErrorCode          &err)
{
    return compile(regex, 0, pe, err);
}


//
//   compile with no UParseErr parameter.
//
RegexPattern * U_EXPORT2
RegexPattern::compile(const UnicodeString &regex,
                      uint32_t             flags,
                      UErrorCode          &err)
{
    UParseError pe;
    return compile(regex, flags, pe, err);
}


//
//   compile with no UParseErr parameter, UText mode
//
RegexPattern * U_EXPORT2
RegexPattern::compile(UText                *regex,
                      uint32_t             flags,
                      UErrorCode           &err)
{
    UParseError pe;
    return compile(regex, flags, pe, err);
}


//---------------------------------------------------------------------
//
//   flags
//
//---------------------------------------------------------------------
uint32_t RegexPattern::flags() const {
    return fFlags;
}


//---------------------------------------------------------------------
//
//   matcher(UnicodeString, err)
//
//---------------------------------------------------------------------
RegexMatcher *RegexPattern::matcher(const UnicodeString &input,
                                    UErrorCode          &status)  const {
    RegexMatcher    *retMatcher = matcher(status);
    if (retMatcher != NULL) {
        retMatcher->fDeferredStatus = status;
        retMatcher->reset(input);
    }
    return retMatcher;
}


//---------------------------------------------------------------------
//
//   matcher(status)
//
//---------------------------------------------------------------------
RegexMatcher *RegexPattern::matcher(UErrorCode &status)  const {
    RegexMatcher    *retMatcher = NULL;

    if (U_FAILURE(status)) {
        return NULL;
    }
    if (U_FAILURE(fDeferredStatus)) {
        status = fDeferredStatus;
        return NULL;
    }

    retMatcher = new RegexMatcher(this);
    if (retMatcher == NULL) {
        status = U_MEMORY_ALLOCATION_ERROR;
        return NULL;
    }
    return retMatcher;
}



//---------------------------------------------------------------------
//
//   matches        Convenience function to test for a match, starting
//                  with a pattern string and a data string.
//
//---------------------------------------------------------------------
UBool U_EXPORT2 RegexPattern::matches(const UnicodeString   &regex,
              const UnicodeString   &input,
                    UParseError     &pe,
                    UErrorCode      &status) {

    if (U_FAILURE(status)) {return FALSE;}

    UBool         retVal;
    RegexPattern *pat     = NULL;
    RegexMatcher *matcher = NULL;

    pat     = RegexPattern::compile(regex, 0, pe, status);
    matcher = pat->matcher(input, status);
    retVal  = matcher->matches(status);

    delete matcher;
    delete pat;
    return retVal;
}


//
//   matches, UText mode
//
UBool U_EXPORT2 RegexPattern::matches(UText                *regex,
                    UText           *input,
                    UParseError     &pe,
                    UErrorCode      &status) {

    if (U_FAILURE(status)) {return FALSE;}

    UBool         retVal  = FALSE;
    RegexPattern *pat     = NULL;
    RegexMatcher *matcher = NULL;

    pat     = RegexPattern::compile(regex, 0, pe, status);
    matcher = pat->matcher(status);
    if (U_SUCCESS(status)) {
        matcher->reset(input);
        retVal  = matcher->matches(status);
    }

    delete matcher;
    delete pat;
    return retVal;
}





//---------------------------------------------------------------------
//
//   pattern
//
//---------------------------------------------------------------------
UnicodeString RegexPattern::pattern() const {
    if (fPatternString != NULL) {
        return *fPatternString;
    } else if (fPattern == NULL) {
        return UnicodeString();
    } else {
        UErrorCode status = U_ZERO_ERROR;
        int64_t nativeLen = utext_nativeLength(fPattern);
        int32_t len16 = utext_extract(fPattern, 0, nativeLen, NULL, 0, &status); // buffer overflow error
        UnicodeString result;
        
        status = U_ZERO_ERROR;
        UChar *resultChars = result.getBuffer(len16);
        utext_extract(fPattern, 0, nativeLen, resultChars, len16, &status); // unterminated warning
        result.releaseBuffer(len16);
        
        return result;
    }
}




//---------------------------------------------------------------------
//
//   patternText
//
//---------------------------------------------------------------------
UText *RegexPattern::patternText(UErrorCode      &status) const {
    if (U_FAILURE(status)) {return NULL;}
    status = U_ZERO_ERROR;

    if (fPattern != NULL) {
        return fPattern;
    } else {
        RegexStaticSets::initGlobals(&status);
        return RegexStaticSets::gStaticSets->fEmptyText;
    }
}



//---------------------------------------------------------------------
//
//   split
//
//---------------------------------------------------------------------
int32_t  RegexPattern::split(const UnicodeString &input,
        UnicodeString    dest[],
        int32_t          destCapacity,
        UErrorCode      &status) const
{
    if (U_FAILURE(status)) {
        return 0;
    };

    RegexMatcher  m(this);
    int32_t r = 0;
    // Check m's status to make sure all is ok.
    if (U_SUCCESS(m.fDeferredStatus)) {
    	r = m.split(input, dest, destCapacity, status);
    }
    return r;
}

//
//   split, UText mode
//
int32_t  RegexPattern::split(UText *input,
        UText           *dest[],
        int32_t          destCapacity,
        UErrorCode      &status) const
{
    if (U_FAILURE(status)) {
        return 0;
    };

    RegexMatcher  m(this);
    int32_t r = 0;
    // Check m's status to make sure all is ok.
    if (U_SUCCESS(m.fDeferredStatus)) {
    	r = m.split(input, dest, destCapacity, status);
    }
    return r;
}



//---------------------------------------------------------------------
//
//   dump    Output the compiled form of the pattern.
//           Debugging function only.
//
//---------------------------------------------------------------------
#if defined(REGEX_DEBUG)
void   RegexPattern::dumpOp(int32_t index) const {
    static const char * const opNames[] = {URX_OPCODE_NAMES};
    int32_t op          = fCompiledPat->elementAti(index);
    int32_t val         = URX_VAL(op);
    int32_t type        = URX_TYPE(op);
    int32_t pinnedType  = type;
    if ((uint32_t)pinnedType >= sizeof(opNames)/sizeof(char *)) {
        pinnedType = 0;
    }

    REGEX_DUMP_DEBUG_PRINTF(("%4d   %08x    %-15s  ", index, op, opNames[pinnedType]));
    switch (type) {
    case URX_NOP:
    case URX_DOTANY:
    case URX_DOTANY_ALL:
    case URX_FAIL:
    case URX_CARET:
    case URX_DOLLAR:
    case URX_BACKSLASH_G:
    case URX_BACKSLASH_X:
    case URX_END:
    case URX_DOLLAR_M:
    case URX_CARET_M:
        // Types with no operand field of interest.
        break;

    case URX_RESERVED_OP:
    case URX_START_CAPTURE:
    case URX_END_CAPTURE:
    case URX_STATE_SAVE:
    case URX_JMP:
    case URX_JMP_SAV:
    case URX_JMP_SAV_X:
    case URX_BACKSLASH_B:
    case URX_BACKSLASH_BU:
    case URX_BACKSLASH_D:
    case URX_BACKSLASH_Z:
    case URX_STRING_LEN:
    case URX_CTR_INIT:
    case URX_CTR_INIT_NG:
    case URX_CTR_LOOP:
    case URX_CTR_LOOP_NG:
    case URX_RELOC_OPRND:
    case URX_STO_SP:
    case URX_LD_SP:
    case URX_BACKREF:
    case URX_STO_INP_LOC:
    case URX_JMPX:
    case URX_LA_START:
    case URX_LA_END:
    case URX_BACKREF_I:
    case URX_LB_START:
    case URX_LB_CONT:
    case URX_LB_END:
    case URX_LBN_CONT:
    case URX_LBN_END:
    case URX_LOOP_C:
    case URX_LOOP_DOT_I:
        // types with an integer operand field.
        REGEX_DUMP_DEBUG_PRINTF(("%d", val));
        break;

    case URX_ONECHAR:
    case URX_ONECHAR_I:
        REGEX_DUMP_DEBUG_PRINTF(("%c", val<256?val:'?'));
        break;

    case URX_STRING:
    case URX_STRING_I:
        {
            int32_t lengthOp       = fCompiledPat->elementAti(index+1);
            U_ASSERT(URX_TYPE(lengthOp) == URX_STRING_LEN);
            int32_t length = URX_VAL(lengthOp);
            int32_t i;
            for (i=val; i<val+length; i++) {
                UChar c = fLiteralText[i];
                if (c < 32 || c >= 256) {c = '.';}
                REGEX_DUMP_DEBUG_PRINTF(("%c", c));
            }
        }
        break;

    case URX_SETREF:
    case URX_LOOP_SR_I:
        {
            UnicodeString s;
            UnicodeSet *set = (UnicodeSet *)fSets->elementAt(val);
            set->toPattern(s, TRUE);
            for (int32_t i=0; i<s.length(); i++) {
                REGEX_DUMP_DEBUG_PRINTF(("%c", s.charAt(i)));
            }
        }
        break;

    case URX_STATIC_SETREF:
    case URX_STAT_SETREF_N:
        {
            UnicodeString s;
            if (val & URX_NEG_SET) {
                REGEX_DUMP_DEBUG_PRINTF(("NOT "));
                val &= ~URX_NEG_SET;
            }
            UnicodeSet *set = fStaticSets[val];
            set->toPattern(s, TRUE);
            for (int32_t i=0; i<s.length(); i++) {
                REGEX_DUMP_DEBUG_PRINTF(("%c", s.charAt(i)));
            }
        }
        break;


    default:
        REGEX_DUMP_DEBUG_PRINTF(("??????"));
        break;
    }
    REGEX_DUMP_DEBUG_PRINTF(("\n"));
}
#endif


#if defined(REGEX_DEBUG)
U_CAPI void  U_EXPORT2
RegexPatternDump(const RegexPattern *This) {
    int      index;
    int      i;

    REGEX_DUMP_DEBUG_PRINTF(("Original Pattern:  "));
    UChar32 c = utext_next32From(This->fPattern, 0);
    while (c != U_SENTINEL) {
        if (c<32 || c>256) {
            c = '.';
        }
        REGEX_DUMP_DEBUG_PRINTF(("%c", c));
        
        c = UTEXT_NEXT32(This->fPattern);
    }
    REGEX_DUMP_DEBUG_PRINTF(("\n"));
    REGEX_DUMP_DEBUG_PRINTF(("   Min Match Length:  %d\n", This->fMinMatchLen));
    REGEX_DUMP_DEBUG_PRINTF(("   Match Start Type:  %s\n", START_OF_MATCH_STR(This->fStartType)));
    if (This->fStartType == START_STRING) {
        REGEX_DUMP_DEBUG_PRINTF(("    Initial match string: \""));
        for (i=This->fInitialStringIdx; i<This->fInitialStringIdx+This->fInitialStringLen; i++) {
            REGEX_DUMP_DEBUG_PRINTF(("%c", This->fLiteralText[i]));   // TODO:  non-printables, surrogates.
        }
        REGEX_DUMP_DEBUG_PRINTF(("\"\n"));

    } else if (This->fStartType == START_SET) {
        int32_t numSetChars = This->fInitialChars->size();
        if (numSetChars > 20) {
            numSetChars = 20;
        }
        REGEX_DUMP_DEBUG_PRINTF(("     Match First Chars : "));
        for (i=0; i<numSetChars; i++) {
            UChar32 c = This->fInitialChars->charAt(i);
            if (0x20<c && c <0x7e) {
                REGEX_DUMP_DEBUG_PRINTF(("%c ", c));
            } else {
                REGEX_DUMP_DEBUG_PRINTF(("%#x ", c));
            }
        }
        if (numSetChars < This->fInitialChars->size()) {
            REGEX_DUMP_DEBUG_PRINTF((" ..."));
        }
        REGEX_DUMP_DEBUG_PRINTF(("\n"));

    } else if (This->fStartType == START_CHAR) {
        REGEX_DUMP_DEBUG_PRINTF(("    First char of Match : "));
        if (0x20 < This->fInitialChar && This->fInitialChar<0x7e) {
                REGEX_DUMP_DEBUG_PRINTF(("%c\n", This->fInitialChar));
            } else {
                REGEX_DUMP_DEBUG_PRINTF(("%#x\n", This->fInitialChar));
            }
    }

    REGEX_DUMP_DEBUG_PRINTF(("\nIndex   Binary     Type             Operand\n" \
           "-------------------------------------------\n"));
    for (index = 0; index<This->fCompiledPat->size(); index++) {
        This->dumpOp(index);
    }
    REGEX_DUMP_DEBUG_PRINTF(("\n\n"));
}
#endif



UOBJECT_DEFINE_RTTI_IMPLEMENTATION(RegexPattern)

U_NAMESPACE_END
#endif  // !UCONFIG_NO_REGULAR_EXPRESSIONS