icuSources/common/uset.cpp

   1 /*
   2 *******************************************************************************
   3 *
   4 *   Copyright (C) 2002-2007, International Business Machines
   5 *   Corporation and others.  All Rights Reserved.
   6 *
   7 *******************************************************************************
   8 *   file name:  uset.c
   9 *   encoding:   US-ASCII
  10 *   tab size:   8 (not used)
  11 *   indentation:4
  12 *
  13 *   created on: 2002mar07
  14 *   created by: Markus W. Scherer
  15 *
  16 *   The serialized structure, the array of range limits, is
  17 *   the same as in UnicodeSet, except that the HIGH value is not stored.
  18 *
  19 *   There are functions to efficiently serialize a USet into an array of uint16_t
  20 *   and functions to use such a serialized form efficiently without
  21 *   instantiating a new USet.
  22 */
  23
  24 #include "unicode/utypes.h"
  25 #include "unicode/uobject.h"
  26 #include "unicode/uset.h"
  27 #include "unicode/uniset.h"
  28 #include "cmemory.h"
  29 #include "unicode/ustring.h"
  30 #include "unicode/parsepos.h"
  31
  32 U_NAMESPACE_USE
  33
  34 U_CAPI USet* U_EXPORT2
  35 uset_open(UChar32 start, UChar32 end) {
  36     return (USet*) new UnicodeSet(start, end);
  37 }
  38
  39 U_CAPI void U_EXPORT2
  40 uset_close(USet* set) {
  41     delete (UnicodeSet*) set;
  42 }
  43
  44 U_CAPI USet * U_EXPORT2
  45 uset_clone(const USet *set) {
  46     return (USet*) (((UnicodeSet*) set)->UnicodeSet::clone());
  47 }
  48
  49 U_CAPI UBool U_EXPORT2
  50 uset_isFrozen(const USet *set) {
  51     return ((UnicodeSet*) set)->UnicodeSet::isFrozen();
  52 }
  53
  54 U_CAPI void U_EXPORT2
  55 uset_freeze(USet *set) {
  56     ((UnicodeSet*) set)->UnicodeSet::freeze();
  57 }
  58
  59 U_CAPI USet * U_EXPORT2
  60 uset_cloneAsThawed(const USet *set) {
  61     return (USet*) (((UnicodeSet*) set)->UnicodeSet::cloneAsThawed());
  62 }
  63
  64 U_CAPI void U_EXPORT2
  65 uset_set(USet* set,
  66      UChar32 start, UChar32 end) {
  67     ((UnicodeSet*) set)->UnicodeSet::set(start, end);
  68 }
  69
  70 U_CAPI void U_EXPORT2
  71 uset_addAll(USet* set, const USet *additionalSet) {
  72     ((UnicodeSet*) set)->UnicodeSet::addAll(*((const UnicodeSet*)additionalSet));
  73 }
  74
  75 U_CAPI void U_EXPORT2
  76 uset_add(USet* set, UChar32 c) {
  77     ((UnicodeSet*) set)->UnicodeSet::add(c);
  78 }
  79
  80 U_CAPI void U_EXPORT2
  81 uset_addRange(USet* set, UChar32 start, UChar32 end) {
  82     ((UnicodeSet*) set)->UnicodeSet::add(start, end);
  83 }
  84
  85 U_CAPI void U_EXPORT2
  86 uset_addString(USet* set, const UChar* str, int32_t strLen) {
  87     // UnicodeString handles -1 for strLen
  88     UnicodeString s(strLen<0, str, strLen);
  89     ((UnicodeSet*) set)->UnicodeSet::add(s);
  90 }
  91
  92 U_CAPI void U_EXPORT2
  93 uset_addAllCodePoints(USet* set, const UChar *str, int32_t strLen) {
  94     // UnicodeString handles -1 for strLen
  95     UnicodeString s(str, strLen);
  96     ((UnicodeSet*) set)->UnicodeSet::addAll(s);
  97 }
  98
  99 U_CAPI void U_EXPORT2
 100 uset_remove(USet* set, UChar32 c) {
 101     ((UnicodeSet*) set)->UnicodeSet::remove(c);
 102 }
 103
 104 U_CAPI void U_EXPORT2
 105 uset_removeRange(USet* set, UChar32 start, UChar32 end) {
 106     ((UnicodeSet*) set)->UnicodeSet::remove(start, end);
 107 }
 108
 109 U_CAPI void U_EXPORT2
 110 uset_removeString(USet* set, const UChar* str, int32_t strLen) {
 111     UnicodeString s(strLen==-1, str, strLen);
 112     ((UnicodeSet*) set)->UnicodeSet::remove(s);
 113 }
 114
 115 U_CAPI void U_EXPORT2
 116 uset_removeAll(USet* set, const USet* remove) {
 117     ((UnicodeSet*) set)->UnicodeSet::removeAll(*(const UnicodeSet*)remove);
 118 }
 119
 120 U_CAPI void U_EXPORT2
 121 uset_retain(USet* set, UChar32 start, UChar32 end) {
 122     ((UnicodeSet*) set)->UnicodeSet::retain(start, end);
 123 }
 124
 125 U_CAPI void U_EXPORT2
 126 uset_retainAll(USet* set, const USet* retain) {
 127     ((UnicodeSet*) set)->UnicodeSet::retainAll(*(const UnicodeSet*)retain);
 128 }
 129
 130 U_CAPI void U_EXPORT2
 131 uset_compact(USet* set) {
 132     ((UnicodeSet*) set)->UnicodeSet::compact();
 133 }
 134
 135 U_CAPI void U_EXPORT2
 136 uset_complement(USet* set) {
 137     ((UnicodeSet*) set)->UnicodeSet::complement();
 138 }
 139
 140 U_CAPI void U_EXPORT2
 141 uset_complementAll(USet* set, const USet* complement) {
 142     ((UnicodeSet*) set)->UnicodeSet::complementAll(*(const UnicodeSet*)complement);
 143 }
 144
 145 U_CAPI void U_EXPORT2
 146 uset_clear(USet* set) {
 147     ((UnicodeSet*) set)->UnicodeSet::clear();
 148 }
 149
 150 U_CAPI UBool U_EXPORT2
 151 uset_isEmpty(const USet* set) {
 152     return ((const UnicodeSet*) set)->UnicodeSet::isEmpty();
 153 }
 154
 155 U_CAPI UBool U_EXPORT2
 156 uset_contains(const USet* set, UChar32 c) {
 157     return ((const UnicodeSet*) set)->UnicodeSet::contains(c);
 158 }
 159
 160 U_CAPI UBool U_EXPORT2
 161 uset_containsRange(const USet* set, UChar32 start, UChar32 end) {
 162     return ((const UnicodeSet*) set)->UnicodeSet::contains(start, end);
 163 }
 164
 165 U_CAPI UBool U_EXPORT2
 166 uset_containsString(const USet* set, const UChar* str, int32_t strLen) {
 167     UnicodeString s(strLen==-1, str, strLen);
 168     return ((const UnicodeSet*) set)->UnicodeSet::contains(s);
 169 }
 170
 171 U_CAPI UBool U_EXPORT2
 172 uset_containsAll(const USet* set1, const USet* set2) {
 173     return ((const UnicodeSet*) set1)->UnicodeSet::containsAll(* (const UnicodeSet*) set2);
 174 }
 175
 176 U_CAPI UBool U_EXPORT2
 177 uset_containsAllCodePoints(const USet* set, const UChar *str, int32_t strLen) {
 178     // Create a string alias, since nothing is being added to the set.
 179     UnicodeString s(strLen==-1, str, strLen);
 180     return ((const UnicodeSet*) set)->UnicodeSet::containsAll(s);
 181 }
 182
 183 U_CAPI UBool U_EXPORT2
 184 uset_containsNone(const USet* set1, const USet* set2) {
 185     return ((const UnicodeSet*) set1)->UnicodeSet::containsNone(* (const UnicodeSet*) set2);
 186 }
 187
 188 U_CAPI UBool U_EXPORT2
 189 uset_containsSome(const USet* set1, const USet* set2) {
 190     return ((const UnicodeSet*) set1)->UnicodeSet::containsSome(* (const UnicodeSet*) set2);
 191 }
 192
 193 U_CAPI int32_t U_EXPORT2
 194 uset_span(const USet *set, const UChar *s, int32_t length, USetSpanCondition spanCondition) {
 195     return ((UnicodeSet*) set)->UnicodeSet::span(s, length, spanCondition);
 196 }
 197
 198 U_CAPI int32_t U_EXPORT2
 199 uset_spanBack(const USet *set, const UChar *s, int32_t length, USetSpanCondition spanCondition) {
 200     return ((UnicodeSet*) set)->UnicodeSet::spanBack(s, length, spanCondition);
 201 }
 202
 203 U_CAPI int32_t U_EXPORT2
 204 uset_spanUTF8(const USet *set, const char *s, int32_t length, USetSpanCondition spanCondition) {
 205     return ((UnicodeSet*) set)->UnicodeSet::spanUTF8(s, length, spanCondition);
 206 }
 207
 208 U_CAPI int32_t U_EXPORT2
 209 uset_spanBackUTF8(const USet *set, const char *s, int32_t length, USetSpanCondition spanCondition) {
 210     return ((UnicodeSet*) set)->UnicodeSet::spanBackUTF8(s, length, spanCondition);
 211 }
 212
 213 U_CAPI UBool U_EXPORT2
 214 uset_equals(const USet* set1, const USet* set2) {
 215     return *(const UnicodeSet*)set1 == *(const UnicodeSet*)set2;
 216 }
 217
 218 U_CAPI int32_t U_EXPORT2
 219 uset_indexOf(const USet* set, UChar32 c) {
 220     return ((UnicodeSet*) set)->UnicodeSet::indexOf(c);
 221 }
 222
 223 U_CAPI UChar32 U_EXPORT2
 224 uset_charAt(const USet* set, int32_t index) {
 225     return ((UnicodeSet*) set)->UnicodeSet::charAt(index);
 226 }
 227
 228 U_CAPI int32_t U_EXPORT2
 229 uset_size(const USet* set) {
 230     return ((const UnicodeSet*) set)->UnicodeSet::size();
 231 }
 232
 233 U_NAMESPACE_BEGIN
 234 /**
 235  * This class only exists to provide access to the UnicodeSet private
 236  * USet support API.  Declaring a class a friend is more portable than
 237  * trying to declare extern "C" functions as friends.
 238  */
 239 class USetAccess /* not : public UObject because all methods are static */ {
 240 public:
 241     /* Try to have the compiler inline these*/
 242     inline static int32_t getStringCount(const UnicodeSet& set) {
 243         return set.getStringCount();
 244     }
 245     inline static const UnicodeString* getString(const UnicodeSet& set,
 246                                                  int32_t i) {
 247         return set.getString(i);
 248     }
 249 private:
 250     /* do not instantiate*/
 251     USetAccess();
 252 };
 253 U_NAMESPACE_END
 254
 255 U_CAPI int32_t U_EXPORT2
 256 uset_getItemCount(const USet* uset) {
 257     const UnicodeSet& set = *(const UnicodeSet*)uset;
 258     return set.getRangeCount() + USetAccess::getStringCount(set);
 259 }
 260
 261 U_CAPI int32_t U_EXPORT2
 262 uset_getItem(const USet* uset, int32_t itemIndex,
 263              UChar32* start, UChar32* end,
 264              UChar* str, int32_t strCapacity,
 265              UErrorCode* ec) {
 266     if (U_FAILURE(*ec)) return 0;
 267     const UnicodeSet& set = *(const UnicodeSet*)uset;
 268     int32_t rangeCount;
 269
 270     if (itemIndex < 0) {
 271         *ec = U_ILLEGAL_ARGUMENT_ERROR;
 272         return -1;
 273     } else if (itemIndex < (rangeCount = set.getRangeCount())) {
 274         *start = set.getRangeStart(itemIndex);
 275         *end = set.getRangeEnd(itemIndex);
 276         return 0;
 277     } else {
 278         itemIndex -= rangeCount;
 279         if (itemIndex < USetAccess::getStringCount(set)) {
 280             const UnicodeString* s = USetAccess::getString(set, itemIndex);
 281             return s->extract(str, strCapacity, *ec);
 282         } else {
 283             *ec = U_INDEX_OUTOFBOUNDS_ERROR;
 284             return -1;
 285         }
 286     }
 287 }
 288
 289 //U_CAPI int32_t U_EXPORT2
 290 //uset_getRangeCount(const USet* set) {
 291 //    return ((const UnicodeSet*) set)->getRangeCount();
 292 //}
 293 //
 294 //U_CAPI UBool U_EXPORT2
 295 //uset_getRange(const USet* set, int32_t rangeIndex,
 296 //              UChar32* pStart, UChar32* pEnd) {
 297 //    if ((uint32_t) rangeIndex >= (uint32_t) uset_getRangeCount(set)) {
 298 //        return FALSE;
 299 //    }
 300 //    const UnicodeSet* us = (const UnicodeSet*) set;
 301 //    *pStart = us->getRangeStart(rangeIndex);
 302 //    *pEnd = us->getRangeEnd(rangeIndex);
 303 //    return TRUE;
 304 //}
 305
 306 /*
 307  * Serialize a USet into 16-bit units.
 308  * Store BMP code points as themselves with one 16-bit unit each.
 309  *
 310  * Important: the code points in the array are in ascending order,
 311  * therefore all BMP code points precede all supplementary code points.
 312  *
 313  * Store each supplementary code point in 2 16-bit units,
 314  * simply with higher-then-lower 16-bit halfs.
 315  *
 316  * Precede the entire list with the length.
 317  * If there are supplementary code points, then set bit 15 in the length
 318  * and add the bmpLength between it and the array.
 319  *
 320  * In other words:
 321  * - all BMP:            (length=bmpLength) BMP, .., BMP
 322  * - some supplementary: (length|0x8000) (bmpLength<length) BMP, .., BMP, supp-high, supp-low, ..
 323  */
 324 U_CAPI int32_t U_EXPORT2
 325 uset_serialize(const USet* set, uint16_t* dest, int32_t destCapacity, UErrorCode* ec) {
 326     if (ec==NULL || U_FAILURE(*ec)) {
 327         return 0;
 328     }
 329
 330     return ((const UnicodeSet*) set)->UnicodeSet::serialize(dest, destCapacity,* ec);
 331 }
 332
 333 U_CAPI UBool U_EXPORT2
 334 uset_getSerializedSet(USerializedSet* fillSet, const uint16_t* src, int32_t srcLength) {
 335     int32_t length;
 336
 337     if(fillSet==NULL) {
 338         return FALSE;
 339     }
 340     if(src==NULL || srcLength<=0) {
 341         fillSet->length=fillSet->bmpLength=0;
 342         return FALSE;
 343     }
 344
 345     length=*src++;
 346     if(length&0x8000) {
 347         /* there are supplementary values */
 348         length&=0x7fff;
 349         if(srcLength<(2+length)) {
 350             fillSet->length=fillSet->bmpLength=0;
 351             return FALSE;
 352         }
 353         fillSet->bmpLength=*src++;
 354     } else {
 355         /* only BMP values */
 356         if(srcLength<(1+length)) {
 357             fillSet->length=fillSet->bmpLength=0;
 358             return FALSE;
 359         }
 360         fillSet->bmpLength=length;
 361     }
 362     fillSet->array=src;
 363     fillSet->length=length;
 364     return TRUE;
 365 }
 366
 367 U_CAPI void U_EXPORT2
 368 uset_setSerializedToOne(USerializedSet* fillSet, UChar32 c) {
 369     if(fillSet==NULL || (uint32_t)c>0x10ffff) {
 370         return;
 371     }
 372
 373     fillSet->array=fillSet->staticArray;
 374     if(c<0xffff) {
 375         fillSet->bmpLength=fillSet->length=2;
 376         fillSet->staticArray[0]=(uint16_t)c;
 377         fillSet->staticArray[1]=(uint16_t)c+1;
 378     } else if(c==0xffff) {
 379         fillSet->bmpLength=1;
 380         fillSet->length=3;
 381         fillSet->staticArray[0]=0xffff;
 382         fillSet->staticArray[1]=1;
 383         fillSet->staticArray[2]=0;
 384     } else if(c<0x10ffff) {
 385         fillSet->bmpLength=0;
 386         fillSet->length=4;
 387         fillSet->staticArray[0]=(uint16_t)(c>>16);
 388         fillSet->staticArray[1]=(uint16_t)c;
 389         ++c;
 390         fillSet->staticArray[2]=(uint16_t)(c>>16);
 391         fillSet->staticArray[3]=(uint16_t)c;
 392     } else /* c==0x10ffff */ {
 393         fillSet->bmpLength=0;
 394         fillSet->length=2;
 395         fillSet->staticArray[0]=0x10;
 396         fillSet->staticArray[1]=0xffff;
 397     }
 398 }
 399
 400 U_CAPI UBool U_EXPORT2
 401 uset_serializedContains(const USerializedSet* set, UChar32 c) {
 402     const uint16_t* array;
 403
 404     if(set==NULL || (uint32_t)c>0x10ffff) {
 405         return FALSE;
 406     }
 407
 408     array=set->array;
 409     if(c<=0xffff) {
 410         /* find c in the BMP part */
 411         int32_t lo = 0;
 412         int32_t hi = set->bmpLength-1;
 413         if (c < array[0]) {
 414             hi = 0;
 415         } else if (c < array[hi]) {
 416             for(;;) {
 417                 int32_t i = (lo + hi) >> 1;
 418                 if (i == lo) {
 419                     break;  // Done!
 420                 } else if (c < array[i]) {
 421                     hi = i;
 422                 } else {
 423                     lo = i;
 424                 }
 425             }
 426         } else {
 427             hi += 1;
 428         }
 429         return (UBool)(hi&1);
 430     } else {
 431         /* find c in the supplementary part */
 432         uint16_t high=(uint16_t)(c>>16), low=(uint16_t)c;
 433         int32_t base = set->bmpLength;
 434         int32_t lo = 0;
 435         int32_t hi = set->length - 2 - base;
 436         if (high < array[base] || (high==array[base] && low<array[base+1])) {
 437             hi = 0;
 438         } else if (high < array[base+hi] || (high==array[base+hi] && low<array[base+hi+1])) {
 439             for (;;) {
 440                 int32_t i = ((lo + hi) >> 1) & ~1;  // Guarantee even result
 441                 int32_t iabs = i + base;
 442                 if (i == lo) {
 443                     break;  // Done!
 444                 } else if (high < array[iabs] || (high==array[iabs] && low<array[iabs+1])) {
 445                     hi = i;
 446                 } else {
 447                     lo = i;
 448                 }
 449             }
 450         } else {
 451             hi += 2;
 452         }
 453         /* count pairs of 16-bit units even per BMP and check if the number of pairs is odd */
 454         return (UBool)(((hi+(base<<1))&2)!=0);
 455     }
 456 }
 457
 458 U_CAPI int32_t U_EXPORT2
 459 uset_getSerializedRangeCount(const USerializedSet* set) {
 460     if(set==NULL) {
 461         return 0;
 462     }
 463
 464     return (set->bmpLength+(set->length-set->bmpLength)/2+1)/2;
 465 }
 466
 467 U_CAPI UBool U_EXPORT2
 468 uset_getSerializedRange(const USerializedSet* set, int32_t rangeIndex,
 469                         UChar32* pStart, UChar32* pEnd) {
 470     const uint16_t* array;
 471     int32_t bmpLength, length;
 472
 473     if(set==NULL || rangeIndex<0 || pStart==NULL || pEnd==NULL) {
 474         return FALSE;
 475     }
 476
 477     array=set->array;
 478     length=set->length;
 479     bmpLength=set->bmpLength;
 480
 481     rangeIndex*=2; /* address start/limit pairs */
 482     if(rangeIndex<bmpLength) {
 483         *pStart=array[rangeIndex++];
 484         if(rangeIndex<bmpLength) {
 485             *pEnd=array[rangeIndex];
 486         } else if(rangeIndex<length) {
 487             *pEnd=(((int32_t)array[rangeIndex])<<16)|array[rangeIndex+1];
 488         } else {
 489             *pEnd=0x110000;
 490         }
 491         --*pEnd;
 492         return TRUE;
 493     } else {
 494         rangeIndex-=bmpLength;
 495         rangeIndex*=2; /* address pairs of pairs of units */
 496         length-=bmpLength;
 497         if(rangeIndex<length) {
 498             array+=bmpLength;
 499             *pStart=(((int32_t)array[rangeIndex])<<16)|array[rangeIndex+1];
 500             rangeIndex+=2;
 501             if(rangeIndex<length) {
 502                 *pEnd=(((int32_t)array[rangeIndex])<<16)|array[rangeIndex+1];
 503             } else {
 504                 *pEnd=0x110000;
 505             }
 506             --*pEnd;
 507             return TRUE;
 508         } else {
 509             return FALSE;
 510         }
 511     }
 512 }
 513
 514 // TODO The old, internal uset.c had an efficient uset_containsOne function.
 515 // Returned the one and only code point, or else -1 or something.
 516 // Consider adding such a function to both C and C++ UnicodeSet/uset.
 517 // See tools/gennorm/store.c for usage, now usetContainsOne there.
 518
 519 // TODO Investigate incorporating this code into UnicodeSet to improve
 520 // efficiency.
 521 // ---
 522 // #define USET_GROW_DELTA 20
 523 //
 524 // static U_INLINE int32_t
 525 // findChar(const UChar32* array, int32_t length, UChar32 c) {
 526 //     int32_t i;
 527 //
 528 //     /* check the last range limit first for more efficient appending */
 529 //     if(length>0) {
 530 //         if(c>=array[length-1]) {
 531 //             return length;
 532 //         }
 533 //
 534 //         /* do not check the last range limit again in the loop below */
 535 //         --length;
 536 //     }
 537 //
 538 //     for(i=0; i<length && c>=array[i]; ++i) {}
 539 //     return i;
 540 // }
 541 //
 542 // static UBool
 543 // addRemove(USet* set, UChar32 c, int32_t doRemove) {
 544 //     int32_t i, length, more;
 545 //
 546 //     if(set==NULL || (uint32_t)c>0x10ffff) {
 547 //         return FALSE;
 548 //     }
 549 //
 550 //     length=set->length;
 551 //     i=findChar(set->array, length, c);
 552 //     if((i&1)^doRemove) {
 553 //         /* c is already in the set */
 554 //         return TRUE;
 555 //     }
 556 //
 557 //     /* how many more array items do we need? */
 558 //     if(i<length && (c+1)==set->array[i]) {
 559 //         /* c is just before the following range, extend that in-place by one */
 560 //         set->array[i]=c;
 561 //         if(i>0) {
 562 //             --i;
 563 //             if(c==set->array[i]) {
 564 //                 /* the previous range collapsed, remove it */
 565 //                 set->length=length-=2;
 566 //                 if(i<length) {
 567 //                     uprv_memmove(set->array+i, set->array+i+2, (length-i)*4);
 568 //                 }
 569 //             }
 570 //         }
 571 //         return TRUE;
 572 //     } else if(i>0 && c==set->array[i-1]) {
 573 //         /* c is just after the previous range, extend that in-place by one */
 574 //         if(++c<=0x10ffff) {
 575 //             set->array[i-1]=c;
 576 //             if(i<length && c==set->array[i]) {
 577 //                 /* the following range collapsed, remove it */
 578 //                 --i;
 579 //                 set->length=length-=2;
 580 //                 if(i<length) {
 581 //                     uprv_memmove(set->array+i, set->array+i+2, (length-i)*4);
 582 //                 }
 583 //             }
 584 //         } else {
 585 //             /* extend the previous range (had limit 0x10ffff) to the end of Unicode */
 586 //             set->length=i-1;
 587 //         }
 588 //         return TRUE;
 589 //     } else if(i==length && c==0x10ffff) {
 590 //         /* insert one range limit c */
 591 //         more=1;
 592 //     } else {
 593 //         /* insert two range limits c, c+1 */
 594 //         more=2;
 595 //     }
 596 //
 597 //     /* insert <more> range limits */
 598 //     if(length+more>set->capacity) {
 599 //         /* reallocate */
 600 //         int32_t newCapacity=set->capacity+set->capacity/2+USET_GROW_DELTA;
 601 //         UChar32* newArray=(UChar32* )uprv_malloc(newCapacity*4);
 602 //         if(newArray==NULL) {
 603 //             return FALSE;
 604 //         }
 605 //         set->capacity=newCapacity;
 606 //         uprv_memcpy(newArray, set->array, length*4);
 607 //
 608 //         if(set->array!=set->staticBuffer) {
 609 //             uprv_free(set->array);
 610 //         }
 611 //         set->array=newArray;
 612 //     }
 613 //
 614 //     if(i<length) {
 615 //         uprv_memmove(set->array+i+more, set->array+i, (length-i)*4);
 616 //     }
 617 //     set->array[i]=c;
 618 //     if(more==2) {
 619 //         set->array[i+1]=c+1;
 620 //     }
 621 //     set->length+=more;
 622 //
 623 //     return TRUE;
 624 // }
 625 //
 626 // U_CAPI UBool U_EXPORT2
 627 // uset_add(USet* set, UChar32 c) {
 628 //     return addRemove(set, c, 0);
 629 // }
 630 //
 631 // U_CAPI void U_EXPORT2
 632 // uset_remove(USet* set, UChar32 c) {
 633 //     addRemove(set, c, 1);
 634 // }