dlls/jscript/jsregexp.c

   1 /*
   2  * Copyright 2008 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <math.h>
  20
  21 #include "jscript.h"
  22 #include "regexp.h"
  23
  24 #include "wine/debug.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  27
  28 typedef struct {
  29     jsdisp_t dispex;
  30
  31     regexp_t *jsregexp;
  32     jsstr_t *str;
  33     INT last_index;
  34     jsval_t last_index_val;
  35 } RegExpInstance;
  36
  37 static const WCHAR sourceW[] = {'s','o','u','r','c','e',0};
  38 static const WCHAR globalW[] = {'g','l','o','b','a','l',0};
  39 static const WCHAR ignoreCaseW[] = {'i','g','n','o','r','e','C','a','s','e',0};
  40 static const WCHAR multilineW[] = {'m','u','l','t','i','l','i','n','e',0};
  41 static const WCHAR lastIndexW[] = {'l','a','s','t','I','n','d','e','x',0};
  42 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  43 static const WCHAR execW[] = {'e','x','e','c',0};
  44 static const WCHAR testW[] = {'t','e','s','t',0};
  45
  46 static const WCHAR leftContextW[] =
  47     {'l','e','f','t','C','o','n','t','e','x','t',0};
  48 static const WCHAR rightContextW[] =
  49     {'r','i','g','h','t','C','o','n','t','e','x','t',0};
  50
  51 static const WCHAR idx1W[] = {'$','1',0};
  52 static const WCHAR idx2W[] = {'$','2',0};
  53 static const WCHAR idx3W[] = {'$','3',0};
  54 static const WCHAR idx4W[] = {'$','4',0};
  55 static const WCHAR idx5W[] = {'$','5',0};
  56 static const WCHAR idx6W[] = {'$','6',0};
  57 static const WCHAR idx7W[] = {'$','7',0};
  58 static const WCHAR idx8W[] = {'$','8',0};
  59 static const WCHAR idx9W[] = {'$','9',0};
  60
  61 static const WCHAR emptyW[] = {0};
  62
  63 static inline RegExpInstance *regexp_from_vdisp(vdisp_t *vdisp)
  64 {
  65     return (RegExpInstance*)vdisp->u.jsdisp;
  66 }
  67
  68 static void set_last_index(RegExpInstance *This, DWORD last_index)
  69 {
  70     This->last_index = last_index;
  71     jsval_release(This->last_index_val);
  72     This->last_index_val = jsval_number(last_index);
  73 }
  74
  75 static HRESULT do_regexp_match_next(script_ctx_t *ctx, RegExpInstance *regexp,
  76         DWORD rem_flags, jsstr_t *jsstr, const WCHAR *str, match_state_t *ret)
  77 {
  78     HRESULT hres;
  79
  80     hres = regexp_execute(regexp->jsregexp, ctx, &ctx->tmp_heap,
  81             str, jsstr_length(jsstr), ret);
  82     if(FAILED(hres))
  83         return hres;
  84     if(hres == S_FALSE) {
  85         if(rem_flags & REM_RESET_INDEX)
  86             set_last_index(regexp, 0);
  87         return S_FALSE;
  88     }
  89
  90     if(!(rem_flags & REM_NO_CTX_UPDATE) && ctx->last_match != jsstr) {
  91         jsstr_release(ctx->last_match);
  92         ctx->last_match = jsstr_addref(jsstr);
  93     }
  94
  95     if(!(rem_flags & REM_NO_CTX_UPDATE)) {
  96         DWORD i, n = min(sizeof(ctx->match_parens)/sizeof(ctx->match_parens[0]), ret->paren_count);
  97
  98         for(i=0; i < n; i++) {
  99             if(ret->parens[i].index == -1) {
 100                 ctx->match_parens[i].index = 0;
 101                 ctx->match_parens[i].length = 0;
 102             }else {
 103                 ctx->match_parens[i].index = ret->parens[i].index;
 104                 ctx->match_parens[i].length = ret->parens[i].length;
 105             }
 106         }
 107
 108         if(n < sizeof(ctx->match_parens)/sizeof(ctx->match_parens[0]))
 109             memset(ctx->match_parens+n, 0, sizeof(ctx->match_parens) - n*sizeof(ctx->match_parens[0]));
 110     }
 111
 112     set_last_index(regexp, ret->cp-str);
 113
 114     if(!(rem_flags & REM_NO_CTX_UPDATE)) {
 115         ctx->last_match_index = ret->cp-str-ret->match_len;
 116         ctx->last_match_length = ret->match_len;
 117     }
 118
 119     return S_OK;
 120 }
 121
 122 HRESULT regexp_match_next(script_ctx_t *ctx, jsdisp_t *dispex,
 123         DWORD rem_flags, jsstr_t *jsstr, match_state_t **ret)
 124 {
 125     RegExpInstance *regexp = (RegExpInstance*)dispex;
 126     match_state_t *match;
 127     heap_pool_t *mark;
 128     const WCHAR *str;
 129     HRESULT hres;
 130
 131     if((rem_flags & REM_CHECK_GLOBAL) && !(regexp->jsregexp->flags & REG_GLOB)) {
 132         if(rem_flags & REM_ALLOC_RESULT)
 133             *ret = NULL;
 134         return S_FALSE;
 135     }
 136
 137     str = jsstr_flatten(jsstr);
 138     if(!str)
 139         return E_OUTOFMEMORY;
 140
 141     if(rem_flags & REM_ALLOC_RESULT) {
 142         match = alloc_match_state(regexp->jsregexp, NULL, str);
 143         if(!match)
 144             return E_OUTOFMEMORY;
 145         *ret = match;
 146     }
 147
 148     mark = heap_pool_mark(&ctx->tmp_heap);
 149
 150     if(rem_flags & REM_NO_PARENS) {
 151         match = alloc_match_state(regexp->jsregexp, &ctx->tmp_heap, NULL);
 152         if(!match) {
 153             heap_pool_clear(mark);
 154             return E_OUTOFMEMORY;
 155         }
 156         match->cp = (*ret)->cp;
 157         match->match_len = (*ret)->match_len;
 158     }else {
 159         match = *ret;
 160     }
 161
 162     hres = do_regexp_match_next(ctx, regexp, rem_flags, jsstr, str, match);
 163
 164     if(rem_flags & REM_NO_PARENS) {
 165         (*ret)->cp = match->cp;
 166         (*ret)->match_len = match->match_len;
 167     }
 168
 169     heap_pool_clear(mark);
 170
 171     if(hres != S_OK && (rem_flags & REM_ALLOC_RESULT)) {
 172         heap_free(match);
 173         *ret = NULL;
 174     }
 175
 176     return hres;
 177 }
 178
 179 static HRESULT regexp_match(script_ctx_t *ctx, jsdisp_t *dispex, jsstr_t *jsstr, BOOL gflag,
 180         match_result_t **match_result, DWORD *result_cnt)
 181 {
 182     RegExpInstance *This = (RegExpInstance*)dispex;
 183     match_result_t *ret = NULL;
 184     match_state_t *result;
 185     DWORD i=0, ret_size = 0;
 186     heap_pool_t *mark;
 187     const WCHAR *str;
 188     HRESULT hres;
 189
 190     mark = heap_pool_mark(&ctx->tmp_heap);
 191
 192     str = jsstr_flatten(jsstr);
 193     if(!str)
 194         return E_OUTOFMEMORY;
 195
 196     result = alloc_match_state(This->jsregexp, &ctx->tmp_heap, str);
 197     if(!result) {
 198         heap_pool_clear(mark);
 199         return E_OUTOFMEMORY;
 200     }
 201
 202     while(1) {
 203         hres = do_regexp_match_next(ctx, This, 0, jsstr, str, result);
 204         if(hres == S_FALSE) {
 205             hres = S_OK;
 206             break;
 207         }
 208
 209         if(FAILED(hres))
 210             break;
 211
 212         if(ret_size == i) {
 213             if(ret) {
 214                 match_result_t *old_ret = ret;
 215
 216                 ret = heap_realloc(old_ret, (ret_size <<= 1) * sizeof(match_result_t));
 217                 if(!ret)
 218                     heap_free(old_ret);
 219             }else {
 220                 ret = heap_alloc((ret_size=4) * sizeof(match_result_t));
 221             }
 222             if(!ret) {
 223                 hres = E_OUTOFMEMORY;
 224                 break;
 225             }
 226         }
 227
 228         ret[i].index = result->cp - str - result->match_len;
 229         ret[i++].length = result->match_len;
 230
 231         if(!gflag && !(This->jsregexp->flags & REG_GLOB)) {
 232             hres = S_OK;
 233             break;
 234         }
 235     }
 236
 237     heap_pool_clear(mark);
 238     if(FAILED(hres)) {
 239         heap_free(ret);
 240         return hres;
 241     }
 242
 243     *match_result = ret;
 244     *result_cnt = i;
 245     return S_OK;
 246 }
 247
 248 static HRESULT RegExp_source(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 249         jsval_t *r)
 250 {
 251     TRACE("\n");
 252
 253     switch(flags) {
 254     case DISPATCH_PROPERTYGET: {
 255         RegExpInstance *This = regexp_from_vdisp(jsthis);
 256         *r = jsval_string(jsstr_addref(This->str));
 257         break;
 258     }
 259     default:
 260         FIXME("Unimplemented flags %x\n", flags);
 261         return E_NOTIMPL;
 262     }
 263
 264     return S_OK;
 265 }
 266
 267 static HRESULT RegExp_global(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 268         jsval_t *r)
 269 {
 270     FIXME("\n");
 271     return E_NOTIMPL;
 272 }
 273
 274 static HRESULT RegExp_ignoreCase(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 275         jsval_t *r)
 276 {
 277     FIXME("\n");
 278     return E_NOTIMPL;
 279 }
 280
 281 static HRESULT RegExp_multiline(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 282         jsval_t *r)
 283 {
 284     FIXME("\n");
 285     return E_NOTIMPL;
 286 }
 287
 288 static INT index_from_val(script_ctx_t *ctx, jsval_t v)
 289 {
 290     double n;
 291     HRESULT hres;
 292
 293     hres = to_number(ctx, v, &n);
 294     if(FAILED(hres)) {
 295         clear_ei(ctx); /* FIXME: Move ignoring exceptions to to_primitive */
 296         return 0;
 297     }
 298
 299     n = floor(n);
 300     return is_int32(n) ? n : 0;
 301 }
 302
 303 static HRESULT RegExp_lastIndex(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 304         jsval_t *r)
 305 {
 306     TRACE("\n");
 307
 308     switch(flags) {
 309     case DISPATCH_PROPERTYGET: {
 310         RegExpInstance *regexp = regexp_from_vdisp(jsthis);
 311
 312         return jsval_copy(regexp->last_index_val, r);
 313     }
 314     case DISPATCH_PROPERTYPUT: {
 315         RegExpInstance *regexp = regexp_from_vdisp(jsthis);
 316         HRESULT hres;
 317
 318         hres = jsval_copy(argv[0], &regexp->last_index_val);
 319         if(FAILED(hres))
 320             return hres;
 321
 322         regexp->last_index = index_from_val(ctx, argv[0]);
 323         break;
 324     }
 325     default:
 326         FIXME("unimplemented flags: %x\n", flags);
 327         return E_NOTIMPL;
 328     }
 329
 330     return S_OK;
 331 }
 332
 333 static HRESULT RegExp_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 334         jsval_t *r)
 335 {
 336     FIXME("\n");
 337     return E_NOTIMPL;
 338 }
 339
 340 static HRESULT create_match_array(script_ctx_t *ctx, jsstr_t *input_str,
 341         const match_state_t *result, IDispatch **ret)
 342 {
 343     const WCHAR *input;
 344     jsdisp_t *array;
 345     jsstr_t *str;
 346     DWORD i;
 347     HRESULT hres = S_OK;
 348
 349     static const WCHAR indexW[] = {'i','n','d','e','x',0};
 350     static const WCHAR inputW[] = {'i','n','p','u','t',0};
 351     static const WCHAR lastIndexW[] = {'l','a','s','t','I','n','d','e','x',0};
 352     static const WCHAR zeroW[] = {'0',0};
 353
 354     input = jsstr_flatten(input_str);
 355     if(!input)
 356         return E_OUTOFMEMORY;
 357
 358     hres = create_array(ctx, result->paren_count+1, &array);
 359     if(FAILED(hres))
 360         return hres;
 361
 362     for(i=0; i < result->paren_count; i++) {
 363         if(result->parens[i].index != -1)
 364             str = jsstr_substr(input_str, result->parens[i].index, result->parens[i].length);
 365         else
 366             str = jsstr_empty();
 367         if(!str) {
 368             hres = E_OUTOFMEMORY;
 369             break;
 370         }
 371
 372         hres = jsdisp_propput_idx(array, i+1, jsval_string(str));
 373         jsstr_release(str);
 374         if(FAILED(hres))
 375             break;
 376     }
 377
 378     while(SUCCEEDED(hres)) {
 379         hres = jsdisp_propput_name(array, indexW, jsval_number(result->cp-input-result->match_len));
 380         if(FAILED(hres))
 381             break;
 382
 383         hres = jsdisp_propput_name(array, lastIndexW, jsval_number(result->cp-input));
 384         if(FAILED(hres))
 385             break;
 386
 387         hres = jsdisp_propput_name(array, inputW, jsval_string(jsstr_addref(input_str)));
 388         if(FAILED(hres))
 389             break;
 390
 391         str = jsstr_alloc_len(result->cp-result->match_len, result->match_len);
 392         if(!str) {
 393             hres = E_OUTOFMEMORY;
 394             break;
 395         }
 396         hres = jsdisp_propput_name(array, zeroW, jsval_string(str));
 397         jsstr_release(str);
 398         break;
 399     }
 400
 401     if(FAILED(hres)) {
 402         jsdisp_release(array);
 403         return hres;
 404     }
 405
 406     *ret = to_disp(array);
 407     return S_OK;
 408 }
 409
 410 static HRESULT run_exec(script_ctx_t *ctx, vdisp_t *jsthis, jsval_t arg,
 411         jsstr_t **input, match_state_t **result, BOOL *ret)
 412 {
 413     RegExpInstance *regexp;
 414     match_state_t *match;
 415     DWORD last_index = 0;
 416     const WCHAR *string;
 417     jsstr_t *jsstr;
 418     HRESULT hres;
 419
 420     if(!is_vclass(jsthis, JSCLASS_REGEXP)) {
 421         FIXME("Not a RegExp\n");
 422         return E_NOTIMPL;
 423     }
 424
 425     regexp = regexp_from_vdisp(jsthis);
 426
 427     hres = to_flat_string(ctx, arg, &jsstr, &string);
 428     if(FAILED(hres))
 429         return hres;
 430
 431     if(regexp->jsregexp->flags & REG_GLOB) {
 432         if(regexp->last_index < 0) {
 433             jsstr_release(jsstr);
 434             set_last_index(regexp, 0);
 435             *ret = FALSE;
 436             if(input)
 437                 *input = jsstr_empty();
 438             return S_OK;
 439         }
 440
 441         last_index = regexp->last_index;
 442     }
 443
 444     match = alloc_match_state(regexp->jsregexp, &ctx->tmp_heap, string+last_index);
 445     if(!match) {
 446         jsstr_release(jsstr);
 447         return E_OUTOFMEMORY;
 448     }
 449
 450     hres = regexp_match_next(ctx, &regexp->dispex, REM_RESET_INDEX, jsstr, &match);
 451     if(FAILED(hres)) {
 452         jsstr_release(jsstr);
 453         return hres;
 454     }
 455
 456     *result = match;
 457     *ret = hres == S_OK;
 458     if(input)
 459         *input = jsstr;
 460     else
 461         jsstr_release(jsstr);
 462     return S_OK;
 463 }
 464
 465 static HRESULT RegExp_exec(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 466         jsval_t *r)
 467 {
 468     match_state_t *match;
 469     heap_pool_t *mark;
 470     BOOL b;
 471     jsstr_t *string;
 472     HRESULT hres;
 473
 474     TRACE("\n");
 475
 476     mark = heap_pool_mark(&ctx->tmp_heap);
 477
 478     hres = run_exec(ctx, jsthis, argc ? argv[0] : jsval_string(jsstr_empty()), &string, &match, &b);
 479     if(FAILED(hres)) {
 480         heap_pool_clear(mark);
 481         return hres;
 482     }
 483
 484     if(r) {
 485         if(b) {
 486             IDispatch *ret;
 487
 488             hres = create_match_array(ctx, string, match, &ret);
 489             if(SUCCEEDED(hres))
 490                 *r = jsval_disp(ret);
 491         }else {
 492             *r = jsval_null();
 493         }
 494     }
 495
 496     heap_pool_clear(mark);
 497     jsstr_release(string);
 498     return hres;
 499 }
 500
 501 static HRESULT RegExp_test(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 502         jsval_t *r)
 503 {
 504     match_state_t *match;
 505     jsstr_t *undef_str;
 506     heap_pool_t *mark;
 507     BOOL b;
 508     HRESULT hres;
 509
 510     TRACE("\n");
 511
 512     mark = heap_pool_mark(&ctx->tmp_heap);
 513     hres = run_exec(ctx, jsthis, argc ? argv[0] : jsval_string(undef_str = jsstr_undefined()), NULL, &match, &b);
 514     heap_pool_clear(mark);
 515     if(!argc)
 516         jsstr_release(undef_str);
 517     if(FAILED(hres))
 518         return hres;
 519
 520     if(r)
 521         *r = jsval_bool(b);
 522     return S_OK;
 523 }
 524
 525 static HRESULT RegExp_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 526         jsval_t *r)
 527 {
 528     TRACE("\n");
 529
 530     switch(flags) {
 531     case INVOKE_FUNC:
 532         return throw_type_error(ctx, JS_E_FUNCTION_EXPECTED, NULL);
 533     default:
 534         FIXME("unimplemented flags %x\n", flags);
 535         return E_NOTIMPL;
 536     }
 537
 538     return S_OK;
 539 }
 540
 541 static void RegExp_destructor(jsdisp_t *dispex)
 542 {
 543     RegExpInstance *This = (RegExpInstance*)dispex;
 544
 545     if(This->jsregexp)
 546         regexp_destroy(This->jsregexp);
 547     jsval_release(This->last_index_val);
 548     jsstr_release(This->str);
 549     heap_free(This);
 550 }
 551
 552 static const builtin_prop_t RegExp_props[] = {
 553     {execW,                  RegExp_exec,                  PROPF_METHOD|1},
 554     {globalW,                RegExp_global,                0},
 555     {ignoreCaseW,            RegExp_ignoreCase,            0},
 556     {lastIndexW,             RegExp_lastIndex,             0},
 557     {multilineW,             RegExp_multiline,             0},
 558     {sourceW,                RegExp_source,                0},
 559     {testW,                  RegExp_test,                  PROPF_METHOD|1},
 560     {toStringW,              RegExp_toString,              PROPF_METHOD}
 561 };
 562
 563 static const builtin_info_t RegExp_info = {
 564     JSCLASS_REGEXP,
 565     {NULL, RegExp_value, 0},
 566     sizeof(RegExp_props)/sizeof(*RegExp_props),
 567     RegExp_props,
 568     RegExp_destructor,
 569     NULL
 570 };
 571
 572 static const builtin_prop_t RegExpInst_props[] = {
 573     {globalW,                RegExp_global,                0},
 574     {ignoreCaseW,            RegExp_ignoreCase,            0},
 575     {lastIndexW,             RegExp_lastIndex,             0},
 576     {multilineW,             RegExp_multiline,             0},
 577     {sourceW,                RegExp_source,                0}
 578 };
 579
 580 static const builtin_info_t RegExpInst_info = {
 581     JSCLASS_REGEXP,
 582     {NULL, RegExp_value, 0},
 583     sizeof(RegExpInst_props)/sizeof(*RegExpInst_props),
 584     RegExpInst_props,
 585     RegExp_destructor,
 586     NULL
 587 };
 588
 589 static HRESULT alloc_regexp(script_ctx_t *ctx, jsdisp_t *object_prototype, RegExpInstance **ret)
 590 {
 591     RegExpInstance *regexp;
 592     HRESULT hres;
 593
 594     regexp = heap_alloc_zero(sizeof(RegExpInstance));
 595     if(!regexp)
 596         return E_OUTOFMEMORY;
 597
 598     if(object_prototype)
 599         hres = init_dispex(&regexp->dispex, ctx, &RegExp_info, object_prototype);
 600     else
 601         hres = init_dispex_from_constr(&regexp->dispex, ctx, &RegExpInst_info, ctx->regexp_constr);
 602
 603     if(FAILED(hres)) {
 604         heap_free(regexp);
 605         return hres;
 606     }
 607
 608     *ret = regexp;
 609     return S_OK;
 610 }
 611
 612 HRESULT create_regexp(script_ctx_t *ctx, jsstr_t *src, DWORD flags, jsdisp_t **ret)
 613 {
 614     RegExpInstance *regexp;
 615     const WCHAR *str;
 616     HRESULT hres;
 617
 618     TRACE("%s %x\n", debugstr_jsstr(src), flags);
 619
 620     str = jsstr_flatten(src);
 621     if(!str)
 622         return E_OUTOFMEMORY;
 623
 624     hres = alloc_regexp(ctx, NULL, &regexp);
 625     if(FAILED(hres))
 626         return hres;
 627
 628     regexp->str = jsstr_addref(src);
 629     regexp->last_index_val = jsval_number(0);
 630
 631     regexp->jsregexp = regexp_new(ctx, &ctx->tmp_heap, str, jsstr_length(regexp->str), flags, FALSE);
 632     if(!regexp->jsregexp) {
 633         WARN("regexp_new failed\n");
 634         jsdisp_release(&regexp->dispex);
 635         return E_FAIL;
 636     }
 637
 638     *ret = &regexp->dispex;
 639     return S_OK;
 640 }
 641
 642 HRESULT create_regexp_var(script_ctx_t *ctx, jsval_t src_arg, jsval_t *flags_arg, jsdisp_t **ret)
 643 {
 644     unsigned flags, opt_len = 0;
 645     const WCHAR *opt = NULL;
 646     jsstr_t *src;
 647     HRESULT hres;
 648
 649     if(is_object_instance(src_arg)) {
 650         jsdisp_t *obj;
 651
 652         obj = iface_to_jsdisp((IUnknown*)get_object(src_arg));
 653         if(obj) {
 654             if(is_class(obj, JSCLASS_REGEXP)) {
 655                 RegExpInstance *regexp = (RegExpInstance*)obj;
 656
 657                 hres = create_regexp(ctx, regexp->str, regexp->jsregexp->flags, ret);
 658                 jsdisp_release(obj);
 659                 return hres;
 660             }
 661
 662             jsdisp_release(obj);
 663         }
 664     }
 665
 666     if(!is_string(src_arg)) {
 667         FIXME("src_arg = %s\n", debugstr_jsval(src_arg));
 668         return E_NOTIMPL;
 669     }
 670
 671     src = get_string(src_arg);
 672
 673     if(flags_arg) {
 674         jsstr_t *opt_str;
 675
 676         if(!is_string(*flags_arg)) {
 677             FIXME("unimplemented for %s\n", debugstr_jsval(*flags_arg));
 678             return E_NOTIMPL;
 679         }
 680
 681         opt_str = get_string(*flags_arg);
 682         opt = jsstr_flatten(opt_str);
 683         if(!opt)
 684             return E_OUTOFMEMORY;
 685         opt_len = jsstr_length(opt_str);
 686     }
 687
 688     hres = parse_regexp_flags(opt, opt_len, &flags);
 689     if(FAILED(hres))
 690         return hres;
 691
 692     return create_regexp(ctx, src, flags, ret);
 693 }
 694
 695 HRESULT regexp_string_match(script_ctx_t *ctx, jsdisp_t *re, jsstr_t *jsstr, jsval_t *r)
 696 {
 697     static const WCHAR indexW[] = {'i','n','d','e','x',0};
 698     static const WCHAR inputW[] = {'i','n','p','u','t',0};
 699     static const WCHAR lastIndexW[] = {'l','a','s','t','I','n','d','e','x',0};
 700
 701     RegExpInstance *regexp = (RegExpInstance*)re;
 702     match_result_t *match_result;
 703     unsigned match_cnt, i;
 704     const WCHAR *str;
 705     jsdisp_t *array;
 706     HRESULT hres;
 707
 708     str = jsstr_flatten(jsstr);
 709     if(!str)
 710         return E_OUTOFMEMORY;
 711
 712     if(!(regexp->jsregexp->flags & REG_GLOB)) {
 713         match_state_t *match;
 714         heap_pool_t *mark;
 715
 716         mark = heap_pool_mark(&ctx->tmp_heap);
 717         match = alloc_match_state(regexp->jsregexp, &ctx->tmp_heap, str);
 718         if(!match) {
 719             heap_pool_clear(mark);
 720             return E_OUTOFMEMORY;
 721         }
 722
 723         hres = regexp_match_next(ctx, &regexp->dispex, 0, jsstr, &match);
 724         if(FAILED(hres)) {
 725             heap_pool_clear(mark);
 726             return hres;
 727         }
 728
 729         if(r) {
 730             if(hres == S_OK) {
 731                 IDispatch *ret;
 732
 733                 hres = create_match_array(ctx, jsstr, match, &ret);
 734                 if(SUCCEEDED(hres))
 735                     *r = jsval_disp(ret);
 736             }else {
 737                 *r = jsval_null();
 738             }
 739         }
 740
 741         heap_pool_clear(mark);
 742         return S_OK;
 743     }
 744
 745     hres = regexp_match(ctx, &regexp->dispex, jsstr, FALSE, &match_result, &match_cnt);
 746     if(FAILED(hres))
 747         return hres;
 748
 749     if(!match_cnt) {
 750         TRACE("no match\n");
 751
 752         if(r)
 753             *r = jsval_null();
 754         return S_OK;
 755     }
 756
 757     hres = create_array(ctx, match_cnt, &array);
 758     if(FAILED(hres))
 759         return hres;
 760
 761     for(i=0; i < match_cnt; i++) {
 762         jsstr_t *tmp_str;
 763
 764         tmp_str = jsstr_substr(jsstr, match_result[i].index, match_result[i].length);
 765         if(!tmp_str) {
 766             hres = E_OUTOFMEMORY;
 767             break;
 768         }
 769
 770         hres = jsdisp_propput_idx(array, i, jsval_string(tmp_str));
 771         jsstr_release(tmp_str);
 772         if(FAILED(hres))
 773             break;
 774     }
 775
 776     while(SUCCEEDED(hres)) {
 777         hres = jsdisp_propput_name(array, indexW, jsval_number(match_result[match_cnt-1].index));
 778         if(FAILED(hres))
 779             break;
 780
 781         hres = jsdisp_propput_name(array, lastIndexW,
 782                 jsval_number(match_result[match_cnt-1].index + match_result[match_cnt-1].length));
 783         if(FAILED(hres))
 784             break;
 785
 786         hres = jsdisp_propput_name(array, inputW, jsval_string(jsstr));
 787         break;
 788     }
 789
 790     heap_free(match_result);
 791
 792     if(SUCCEEDED(hres) && r)
 793         *r = jsval_obj(array);
 794     else
 795         jsdisp_release(array);
 796     return hres;
 797 }
 798
 799 static HRESULT global_idx(script_ctx_t *ctx, DWORD flags, DWORD idx, jsval_t *r)
 800 {
 801     switch(flags) {
 802     case DISPATCH_PROPERTYGET: {
 803         jsstr_t *ret;
 804
 805         ret = jsstr_substr(ctx->last_match, ctx->match_parens[idx].index, ctx->match_parens[idx].length);
 806         if(!ret)
 807             return E_OUTOFMEMORY;
 808
 809         *r = jsval_string(ret);
 810         break;
 811     }
 812     case DISPATCH_PROPERTYPUT:
 813         break;
 814     default:
 815         FIXME("unsupported flags\n");
 816         return E_NOTIMPL;
 817     }
 818
 819     return S_OK;
 820 }
 821
 822 static HRESULT RegExpConstr_idx1(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 823          unsigned argc, jsval_t *argv, jsval_t *r)
 824 {
 825     TRACE("\n");
 826     return global_idx(ctx, flags, 0, r);
 827 }
 828
 829 static HRESULT RegExpConstr_idx2(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 830          unsigned argc, jsval_t *argv, jsval_t *r)
 831 {
 832     TRACE("\n");
 833     return global_idx(ctx, flags, 1, r);
 834 }
 835
 836 static HRESULT RegExpConstr_idx3(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 837          unsigned argc, jsval_t *argv, jsval_t *r)
 838 {
 839     TRACE("\n");
 840     return global_idx(ctx, flags, 2, r);
 841 }
 842
 843 static HRESULT RegExpConstr_idx4(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 844          unsigned argc, jsval_t *argv, jsval_t *r)
 845 {
 846     TRACE("\n");
 847     return global_idx(ctx, flags, 3, r);
 848 }
 849
 850 static HRESULT RegExpConstr_idx5(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 851          unsigned argc, jsval_t *argv, jsval_t *r)
 852 {
 853     TRACE("\n");
 854     return global_idx(ctx, flags, 4, r);
 855 }
 856
 857 static HRESULT RegExpConstr_idx6(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 858          unsigned argc, jsval_t *argv, jsval_t *r)
 859 {
 860     TRACE("\n");
 861     return global_idx(ctx, flags, 5, r);
 862 }
 863
 864 static HRESULT RegExpConstr_idx7(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 865          unsigned argc, jsval_t *argv, jsval_t *r)
 866 {
 867     TRACE("\n");
 868     return global_idx(ctx, flags, 6, r);
 869 }
 870
 871 static HRESULT RegExpConstr_idx8(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 872          unsigned argc, jsval_t *argv, jsval_t *r)
 873 {
 874     TRACE("\n");
 875     return global_idx(ctx, flags, 7, r);
 876 }
 877
 878 static HRESULT RegExpConstr_idx9(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 879          unsigned argc, jsval_t *argv, jsval_t *r)
 880 {
 881     TRACE("\n");
 882     return global_idx(ctx, flags, 8, r);
 883 }
 884
 885 static HRESULT RegExpConstr_leftContext(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 886          unsigned argc, jsval_t *argv, jsval_t *r)
 887 {
 888     TRACE("\n");
 889
 890     switch(flags) {
 891     case DISPATCH_PROPERTYGET: {
 892         jsstr_t *ret;
 893
 894         ret = jsstr_substr(ctx->last_match, 0, ctx->last_match_index);
 895         if(!ret)
 896             return E_OUTOFMEMORY;
 897
 898         *r = jsval_string(ret);
 899         break;
 900     }
 901     case DISPATCH_PROPERTYPUT:
 902         break;
 903     default:
 904         FIXME("unsupported flags\n");
 905         return E_NOTIMPL;
 906     }
 907
 908     return S_OK;
 909 }
 910
 911 static HRESULT RegExpConstr_rightContext(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags,
 912          unsigned argc, jsval_t *argv, jsval_t *r)
 913 {
 914     TRACE("\n");
 915
 916     switch(flags) {
 917     case DISPATCH_PROPERTYGET: {
 918         jsstr_t *ret;
 919
 920         ret = jsstr_substr(ctx->last_match, ctx->last_match_index+ctx->last_match_length,
 921                 jsstr_length(ctx->last_match) - ctx->last_match_index - ctx->last_match_length);
 922         if(!ret)
 923             return E_OUTOFMEMORY;
 924
 925         *r = jsval_string(ret);
 926         break;
 927     }
 928     case DISPATCH_PROPERTYPUT:
 929         break;
 930     default:
 931         FIXME("unsupported flags\n");
 932         return E_NOTIMPL;
 933     }
 934
 935     return S_OK;
 936 }
 937
 938 static HRESULT RegExpConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 939         jsval_t *r)
 940 {
 941     TRACE("\n");
 942
 943     switch(flags) {
 944     case DISPATCH_METHOD:
 945         if(argc) {
 946             if(is_object_instance(argv[0])) {
 947                 jsdisp_t *jsdisp = iface_to_jsdisp((IUnknown*)get_object(argv[0]));
 948                 if(jsdisp) {
 949                     if(is_class(jsdisp, JSCLASS_REGEXP)) {
 950                         if(argc > 1 && !is_undefined(argv[1])) {
 951                             jsdisp_release(jsdisp);
 952                             return throw_regexp_error(ctx, JS_E_REGEXP_SYNTAX, NULL);
 953                         }
 954
 955                         if(r)
 956                             *r = jsval_obj(jsdisp);
 957                         else
 958                             jsdisp_release(jsdisp);
 959                         return S_OK;
 960                     }
 961                     jsdisp_release(jsdisp);
 962                 }
 963             }
 964         }
 965         /* fall through */
 966     case DISPATCH_CONSTRUCT: {
 967         jsdisp_t *ret;
 968         HRESULT hres;
 969
 970         if(!argc) {
 971             FIXME("no args\n");
 972             return E_NOTIMPL;
 973         }
 974
 975         hres = create_regexp_var(ctx, argv[0], argc > 1 ? argv+1 : NULL, &ret);
 976         if(FAILED(hres))
 977             return hres;
 978
 979         if(r)
 980             *r = jsval_obj(ret);
 981         else
 982             jsdisp_release(ret);
 983         return S_OK;
 984     }
 985     default:
 986         FIXME("unimplemented flags: %x\n", flags);
 987         return E_NOTIMPL;
 988     }
 989
 990     return S_OK;
 991 }
 992
 993 static const builtin_prop_t RegExpConstr_props[] = {
 994     {idx1W,           RegExpConstr_idx1,           0},
 995     {idx2W,           RegExpConstr_idx2,           0},
 996     {idx3W,           RegExpConstr_idx3,           0},
 997     {idx4W,           RegExpConstr_idx4,           0},
 998     {idx5W,           RegExpConstr_idx5,           0},
 999     {idx6W,           RegExpConstr_idx6,           0},
1000     {idx7W,           RegExpConstr_idx7,           0},
1001     {idx8W,           RegExpConstr_idx8,           0},
1002     {idx9W,           RegExpConstr_idx9,           0},
1003     {leftContextW,    RegExpConstr_leftContext,    0},
1004     {rightContextW,   RegExpConstr_rightContext,   0}
1005 };
1006
1007 static const builtin_info_t RegExpConstr_info = {
1008     JSCLASS_FUNCTION,
1009     {NULL, Function_value, 0},
1010     sizeof(RegExpConstr_props)/sizeof(*RegExpConstr_props),
1011     RegExpConstr_props,
1012     NULL,
1013     NULL
1014 };
1015
1016 HRESULT create_regexp_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
1017 {
1018     RegExpInstance *regexp;
1019     HRESULT hres;
1020
1021     static const WCHAR RegExpW[] = {'R','e','g','E','x','p',0};
1022
1023     hres = alloc_regexp(ctx, object_prototype, &regexp);
1024     if(FAILED(hres))
1025         return hres;
1026
1027     hres = create_builtin_constructor(ctx, RegExpConstr_value, RegExpW, &RegExpConstr_info,
1028             PROPF_CONSTR|2, &regexp->dispex, ret);
1029
1030     jsdisp_release(&regexp->dispex);
1031     return hres;
1032 }
1033
1034 HRESULT parse_regexp_flags(const WCHAR *str, DWORD str_len, DWORD *ret)
1035 {
1036     const WCHAR *p;
1037     DWORD flags = 0;
1038
1039     for (p = str; p < str+str_len; p++) {
1040         switch (*p) {
1041         case 'g':
1042             flags |= REG_GLOB;
1043             break;
1044         case 'i':
1045             flags |= REG_FOLD;
1046             break;
1047         case 'm':
1048             flags |= REG_MULTILINE;
1049             break;
1050         case 'y':
1051             flags |= REG_STICKY;
1052             break;
1053         default:
1054             WARN("wrong flag %c\n", *p);
1055             return E_FAIL;
1056         }
1057     }
1058
1059     *ret = flags;
1060     return S_OK;
1061 }