dlls/jscript/array.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 "config.h"
  20 #include "wine/port.h"
  21
  22 #include <math.h>
  23
  24 #include "jscript.h"
  25
  26 #include "wine/debug.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  29
  30 typedef struct {
  31     jsdisp_t dispex;
  32
  33     DWORD length;
  34 } ArrayInstance;
  35
  36 static const WCHAR lengthW[] = {'l','e','n','g','t','h',0};
  37 static const WCHAR concatW[] = {'c','o','n','c','a','t',0};
  38 static const WCHAR joinW[] = {'j','o','i','n',0};
  39 static const WCHAR popW[] = {'p','o','p',0};
  40 static const WCHAR pushW[] = {'p','u','s','h',0};
  41 static const WCHAR reverseW[] = {'r','e','v','e','r','s','e',0};
  42 static const WCHAR shiftW[] = {'s','h','i','f','t',0};
  43 static const WCHAR sliceW[] = {'s','l','i','c','e',0};
  44 static const WCHAR sortW[] = {'s','o','r','t',0};
  45 static const WCHAR spliceW[] = {'s','p','l','i','c','e',0};
  46 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  47 static const WCHAR toLocaleStringW[] = {'t','o','L','o','c','a','l','e','S','t','r','i','n','g',0};
  48 static const WCHAR unshiftW[] = {'u','n','s','h','i','f','t',0};
  49
  50 static const WCHAR default_separatorW[] = {',',0};
  51
  52 static inline ArrayInstance *array_from_vdisp(vdisp_t *vdisp)
  53 {
  54     return (ArrayInstance*)vdisp->u.jsdisp;
  55 }
  56
  57 static inline ArrayInstance *array_this(vdisp_t *jsthis)
  58 {
  59     return is_vclass(jsthis, JSCLASS_ARRAY) ? array_from_vdisp(jsthis) : NULL;
  60 }
  61
  62 static HRESULT get_length(script_ctx_t *ctx, vdisp_t *vdisp, jsexcept_t *ei, jsdisp_t **jsthis, DWORD *ret)
  63 {
  64     ArrayInstance *array;
  65     jsval_t val;
  66     HRESULT hres;
  67
  68     array = array_this(vdisp);
  69     if(array) {
  70         *jsthis = &array->dispex;
  71         *ret = array->length;
  72         return S_OK;
  73     }
  74
  75     if(!is_jsdisp(vdisp))
  76         return throw_type_error(ctx, ei, JS_E_JSCRIPT_EXPECTED, NULL);
  77
  78     hres = jsdisp_propget_name(vdisp->u.jsdisp, lengthW, &val, ei);
  79     if(FAILED(hres))
  80         return hres;
  81
  82     hres = to_uint32(ctx, val, ei, ret);
  83     jsval_release(val);
  84     if(FAILED(hres))
  85         return hres;
  86
  87     *jsthis = vdisp->u.jsdisp;
  88     return S_OK;
  89 }
  90
  91 static HRESULT set_length(jsdisp_t *obj, jsexcept_t *ei, DWORD length)
  92 {
  93     if(is_class(obj, JSCLASS_ARRAY)) {
  94         ((ArrayInstance*)obj)->length = length;
  95         return S_OK;
  96     }
  97
  98     return jsdisp_propput_name(obj, lengthW, jsval_number(length), ei);
  99 }
 100
 101 static WCHAR *idx_to_str(DWORD idx, WCHAR *ptr)
 102 {
 103     if(!idx) {
 104         *ptr = '0';
 105         return ptr;
 106     }
 107
 108     while(idx) {
 109         *ptr-- = '0' + (idx%10);
 110         idx /= 10;
 111     }
 112
 113     return ptr+1;
 114 }
 115
 116 static HRESULT Array_length(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 117         jsval_t *r, jsexcept_t *ei)
 118 {
 119     ArrayInstance *This = array_from_vdisp(jsthis);
 120
 121     TRACE("%p %d\n", This, This->length);
 122
 123     switch(flags) {
 124     case DISPATCH_PROPERTYGET:
 125         *r = jsval_number(This->length);
 126         break;
 127     case DISPATCH_PROPERTYPUT: {
 128         DOUBLE len = -1;
 129         DWORD i;
 130         HRESULT hres;
 131
 132         hres = to_number(ctx, argv[0], ei, &len);
 133         if(FAILED(hres))
 134             return hres;
 135
 136         len = floor(len);
 137         if(len!=(DWORD)len)
 138             return throw_range_error(ctx, ei, JS_E_INVALID_LENGTH, NULL);
 139
 140         for(i=len; i<This->length; i++) {
 141             hres = jsdisp_delete_idx(&This->dispex, i);
 142             if(FAILED(hres))
 143                 return hres;
 144         }
 145
 146         This->length = len;
 147         break;
 148     }
 149     default:
 150         FIXME("unimplemented flags %x\n", flags);
 151         return E_NOTIMPL;
 152     }
 153
 154     return S_OK;
 155 }
 156
 157 static HRESULT concat_array(jsdisp_t *array, ArrayInstance *obj, DWORD *len, jsexcept_t *ei)
 158 {
 159     jsval_t val;
 160     DWORD i;
 161     HRESULT hres;
 162
 163     for(i=0; i < obj->length; i++) {
 164         hres = jsdisp_get_idx(&obj->dispex, i, &val, ei);
 165         if(hres == DISP_E_UNKNOWNNAME)
 166             continue;
 167         if(FAILED(hres))
 168             return hres;
 169
 170         hres = jsdisp_propput_idx(array, *len+i, val, ei);
 171         jsval_release(val);
 172         if(FAILED(hres))
 173             return hres;
 174     }
 175
 176     *len += obj->length;
 177     return S_OK;
 178 }
 179
 180 static HRESULT concat_obj(jsdisp_t *array, IDispatch *obj, DWORD *len, jsexcept_t *ei)
 181 {
 182     jsdisp_t *jsobj;
 183     HRESULT hres;
 184
 185     jsobj = iface_to_jsdisp((IUnknown*)obj);
 186     if(jsobj) {
 187         if(is_class(jsobj, JSCLASS_ARRAY)) {
 188             hres = concat_array(array, (ArrayInstance*)jsobj, len, ei);
 189             jsdisp_release(jsobj);
 190             return hres;
 191         }
 192         jsdisp_release(jsobj);
 193     }
 194
 195     return jsdisp_propput_idx(array, (*len)++, jsval_disp(obj), ei);
 196 }
 197
 198 static HRESULT Array_concat(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 199         jsval_t *r, jsexcept_t *ei)
 200 {
 201     jsdisp_t *ret;
 202     DWORD len = 0;
 203     HRESULT hres;
 204
 205     TRACE("\n");
 206
 207     hres = create_array(ctx, 0, &ret);
 208     if(FAILED(hres))
 209         return hres;
 210
 211     hres = concat_obj(ret, jsthis->u.disp, &len, ei);
 212     if(SUCCEEDED(hres)) {
 213         DWORD i;
 214
 215         for(i=0; i < argc; i++) {
 216             if(is_object_instance(argv[i]))
 217                 hres = concat_obj(ret, get_object(argv[i]), &len, ei);
 218             else
 219                 hres = jsdisp_propput_idx(ret, len++, argv[i], ei);
 220             if(FAILED(hres))
 221                 break;
 222         }
 223     }
 224
 225     if(FAILED(hres))
 226         return hres;
 227
 228     if(r)
 229         *r = jsval_obj(ret);
 230     else
 231         jsdisp_release(ret);
 232     return S_OK;
 233 }
 234
 235 static HRESULT array_join(script_ctx_t *ctx, jsdisp_t *array, DWORD length, const WCHAR *sep, jsval_t *r, jsexcept_t *ei)
 236 {
 237     BSTR *str_tab, ret = NULL;
 238     jsval_t val;
 239     DWORD i;
 240     HRESULT hres = E_FAIL;
 241
 242     if(!length) {
 243         if(r) {
 244             BSTR ret = SysAllocStringLen(NULL, 0);
 245             if(!ret)
 246                 return E_OUTOFMEMORY;
 247             *r = jsval_string(ret);
 248         }
 249         return S_OK;
 250     }
 251
 252     str_tab = heap_alloc_zero(length * sizeof(BSTR));
 253     if(!str_tab)
 254         return E_OUTOFMEMORY;
 255
 256     for(i=0; i < length; i++) {
 257         hres = jsdisp_get_idx(array, i, &val, ei);
 258         if(hres == DISP_E_UNKNOWNNAME) {
 259             hres = S_OK;
 260             continue;
 261         } else if(FAILED(hres))
 262             break;
 263
 264         if(!is_undefined(val) && !is_null(val)) {
 265             hres = to_string(ctx, val, ei, str_tab+i);
 266             jsval_release(val);
 267             if(FAILED(hres))
 268                 break;
 269         }
 270     }
 271
 272     if(SUCCEEDED(hres)) {
 273         DWORD seplen = 0, len = 0;
 274         WCHAR *ptr;
 275
 276         seplen = strlenW(sep);
 277
 278         if(str_tab[0])
 279             len = SysStringLen(str_tab[0]);
 280         for(i=1; i < length; i++)
 281             len += seplen + SysStringLen(str_tab[i]);
 282
 283         ret = SysAllocStringLen(NULL, len);
 284         if(ret) {
 285             DWORD tmplen = 0;
 286
 287             if(str_tab[0]) {
 288                 tmplen = SysStringLen(str_tab[0]);
 289                 memcpy(ret, str_tab[0], tmplen*sizeof(WCHAR));
 290             }
 291
 292             ptr = ret + tmplen;
 293             for(i=1; i < length; i++) {
 294                 if(seplen) {
 295                     memcpy(ptr, sep, seplen*sizeof(WCHAR));
 296                     ptr += seplen;
 297                 }
 298
 299                 if(str_tab[i]) {
 300                     tmplen = SysStringLen(str_tab[i]);
 301                     memcpy(ptr, str_tab[i], tmplen*sizeof(WCHAR));
 302                     ptr += tmplen;
 303                 }
 304             }
 305             *ptr=0;
 306         }else {
 307             hres = E_OUTOFMEMORY;
 308         }
 309     }
 310
 311     for(i=0; i < length; i++)
 312         SysFreeString(str_tab[i]);
 313     heap_free(str_tab);
 314     if(FAILED(hres))
 315         return hres;
 316
 317     TRACE("= %s\n", debugstr_w(ret));
 318
 319     if(r) {
 320         if(!ret) {
 321             ret = SysAllocStringLen(NULL, 0);
 322             if(!ret)
 323                 return E_OUTOFMEMORY;
 324         }
 325
 326         *r = jsval_string(ret);
 327     }else {
 328         SysFreeString(ret);
 329     }
 330
 331     return S_OK;
 332 }
 333
 334 /* ECMA-262 3rd Edition    15.4.4.5 */
 335 static HRESULT Array_join(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 336         jsval_t *r, jsexcept_t *ei)
 337 {
 338     jsdisp_t *jsthis;
 339     DWORD length;
 340     HRESULT hres;
 341
 342     TRACE("\n");
 343
 344     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 345     if(FAILED(hres))
 346         return hres;
 347
 348     if(argc) {
 349         BSTR sep;
 350
 351         hres = to_string(ctx, argv[0], ei, &sep);
 352         if(FAILED(hres))
 353             return hres;
 354
 355         hres = array_join(ctx, jsthis, length, sep, r, ei);
 356
 357         SysFreeString(sep);
 358     }else {
 359         hres = array_join(ctx, jsthis, length, default_separatorW, r, ei);
 360     }
 361
 362     return hres;
 363 }
 364
 365 static HRESULT Array_pop(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 366         jsval_t *r, jsexcept_t *ei)
 367 {
 368     jsdisp_t *jsthis;
 369     jsval_t val;
 370     DWORD length;
 371     HRESULT hres;
 372
 373     TRACE("\n");
 374
 375     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 376     if(FAILED(hres))
 377         return hres;
 378
 379     if(!length) {
 380         hres = set_length(jsthis, ei, 0);
 381         if(FAILED(hres))
 382             return hres;
 383
 384         if(r)
 385             *r = jsval_undefined();
 386         return S_OK;
 387     }
 388
 389     length--;
 390     hres = jsdisp_get_idx(jsthis, length, &val, ei);
 391     if(SUCCEEDED(hres))
 392         hres = jsdisp_delete_idx(jsthis, length);
 393     else if(hres == DISP_E_UNKNOWNNAME)
 394         val = jsval_undefined();
 395     else
 396         return hres;
 397
 398     if(SUCCEEDED(hres))
 399         hres = set_length(jsthis, ei, length);
 400
 401     if(FAILED(hres)) {
 402         jsval_release(val);
 403         return hres;
 404     }
 405
 406     if(r)
 407         *r = val;
 408     else
 409         jsval_release(val);
 410     return hres;
 411 }
 412
 413 /* ECMA-262 3rd Edition    15.4.4.7 */
 414 static HRESULT Array_push(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 415         jsval_t *r, jsexcept_t *ei)
 416 {
 417     jsdisp_t *jsthis;
 418     DWORD length = 0;
 419     unsigned i;
 420     HRESULT hres;
 421
 422     TRACE("\n");
 423
 424     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 425     if(FAILED(hres))
 426         return hres;
 427
 428     for(i=0; i < argc; i++) {
 429         hres = jsdisp_propput_idx(jsthis, length+i, argv[i], ei);
 430         if(FAILED(hres))
 431             return hres;
 432     }
 433
 434     hres = set_length(jsthis, ei, length+argc);
 435     if(FAILED(hres))
 436         return hres;
 437
 438     if(r)
 439         *r = jsval_number(length+argc);
 440     return S_OK;
 441 }
 442
 443 static HRESULT Array_reverse(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 444         jsval_t *r, jsexcept_t *ei)
 445 {
 446     jsdisp_t *jsthis;
 447     DWORD length, k, l;
 448     jsval_t v1, v2;
 449     HRESULT hres1, hres2;
 450
 451     TRACE("\n");
 452
 453     hres1 = get_length(ctx, vthis, ei, &jsthis, &length);
 454     if(FAILED(hres1))
 455         return hres1;
 456
 457     for(k=0; k<length/2; k++) {
 458         l = length-k-1;
 459
 460         hres1 = jsdisp_get_idx(jsthis, k, &v1, ei);
 461         if(FAILED(hres1) && hres1!=DISP_E_UNKNOWNNAME)
 462             return hres1;
 463
 464         hres2 = jsdisp_get_idx(jsthis, l, &v2, ei);
 465         if(FAILED(hres2) && hres2!=DISP_E_UNKNOWNNAME) {
 466             jsval_release(v1);
 467             return hres2;
 468         }
 469
 470         if(hres1 == DISP_E_UNKNOWNNAME)
 471             hres1 = jsdisp_delete_idx(jsthis, l);
 472         else
 473             hres1 = jsdisp_propput_idx(jsthis, l, v1, ei);
 474
 475         if(FAILED(hres1)) {
 476             jsval_release(v1);
 477             jsval_release(v2);
 478             return hres1;
 479         }
 480
 481         if(hres2 == DISP_E_UNKNOWNNAME)
 482             hres2 = jsdisp_delete_idx(jsthis, k);
 483         else
 484             hres2 = jsdisp_propput_idx(jsthis, k, v2, ei);
 485
 486         if(FAILED(hres2)) {
 487             jsval_release(v2);
 488             return hres2;
 489         }
 490     }
 491
 492     if(r)
 493         *r = jsval_obj(jsdisp_addref(jsthis));
 494     return S_OK;
 495 }
 496
 497 /* ECMA-262 3rd Edition    15.4.4.9 */
 498 static HRESULT Array_shift(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 499         jsval_t *r, jsexcept_t *ei)
 500 {
 501     jsdisp_t *jsthis;
 502     DWORD length = 0, i;
 503     jsval_t v, ret;
 504     HRESULT hres;
 505
 506     TRACE("\n");
 507
 508     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 509     if(FAILED(hres))
 510         return hres;
 511
 512     if(!length) {
 513         hres = set_length(jsthis, ei, 0);
 514         if(FAILED(hres))
 515             return hres;
 516     }
 517
 518     if(!length) {
 519         if(r)
 520             *r = jsval_undefined();
 521         return S_OK;
 522     }
 523
 524     hres = jsdisp_get_idx(jsthis, 0, &ret, ei);
 525     if(hres == DISP_E_UNKNOWNNAME) {
 526         ret = jsval_undefined();
 527         hres = S_OK;
 528     }
 529
 530     for(i=1; SUCCEEDED(hres) && i<length; i++) {
 531         hres = jsdisp_get_idx(jsthis, i, &v, ei);
 532         if(hres == DISP_E_UNKNOWNNAME)
 533             hres = jsdisp_delete_idx(jsthis, i-1);
 534         else if(SUCCEEDED(hres))
 535             hres = jsdisp_propput_idx(jsthis, i-1, v, ei);
 536     }
 537
 538     if(SUCCEEDED(hres)) {
 539         hres = jsdisp_delete_idx(jsthis, length-1);
 540         if(SUCCEEDED(hres))
 541             hres = set_length(jsthis, ei, length-1);
 542     }
 543
 544     if(FAILED(hres))
 545         return hres;
 546
 547     if(r)
 548         *r = ret;
 549     else
 550         jsval_release(ret);
 551     return hres;
 552 }
 553
 554 /* ECMA-262 3rd Edition    15.4.4.10 */
 555 static HRESULT Array_slice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 556         jsval_t *r, jsexcept_t *ei)
 557 {
 558     jsdisp_t *arr, *jsthis;
 559     DOUBLE range;
 560     DWORD length, start, end, idx;
 561     HRESULT hres;
 562
 563     TRACE("\n");
 564
 565     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 566     if(FAILED(hres))
 567         return hres;
 568
 569     if(argc) {
 570         hres = to_number(ctx, argv[0], ei, &range);
 571         if(FAILED(hres))
 572             return hres;
 573
 574         range = floor(range);
 575         if(-range>length || isnan(range)) start = 0;
 576         else if(range < 0) start = range+length;
 577         else if(range <= length) start = range;
 578         else start = length;
 579     }
 580     else start = 0;
 581
 582     if(argc > 1) {
 583         hres = to_number(ctx, argv[1], ei, &range);
 584         if(FAILED(hres))
 585             return hres;
 586
 587         range = floor(range);
 588         if(-range>length) end = 0;
 589         else if(range < 0) end = range+length;
 590         else if(range <= length) end = range;
 591         else end = length;
 592     }
 593     else end = length;
 594
 595     hres = create_array(ctx, (end>start)?end-start:0, &arr);
 596     if(FAILED(hres))
 597         return hres;
 598
 599     for(idx=start; idx<end; idx++) {
 600         jsval_t v;
 601
 602         hres = jsdisp_get_idx(jsthis, idx, &v, ei);
 603         if(hres == DISP_E_UNKNOWNNAME)
 604             continue;
 605
 606         if(SUCCEEDED(hres)) {
 607             hres = jsdisp_propput_idx(arr, idx-start, v, ei);
 608             jsval_release(v);
 609         }
 610
 611         if(FAILED(hres)) {
 612             jsdisp_release(arr);
 613             return hres;
 614         }
 615     }
 616
 617     if(r)
 618         *r = jsval_obj(arr);
 619     else
 620         jsdisp_release(arr);
 621
 622     return S_OK;
 623 }
 624
 625 static HRESULT sort_cmp(script_ctx_t *ctx, jsdisp_t *cmp_func, jsval_t v1, jsval_t v2, jsexcept_t *ei, INT *cmp)
 626 {
 627     HRESULT hres;
 628
 629     if(cmp_func) {
 630         jsval_t args[2] = {v1, v2};
 631         jsval_t res;
 632         double n;
 633
 634         hres = jsdisp_call_value(cmp_func, NULL, DISPATCH_METHOD, 2, args, &res, ei);
 635         if(FAILED(hres))
 636             return hres;
 637
 638         hres = to_number(ctx, res, ei, &n);
 639         jsval_release(res);
 640         if(FAILED(hres))
 641             return hres;
 642
 643         if(n == 0)
 644             *cmp = 0;
 645         *cmp = n > 0.0 ? 1 : -1;
 646     }else if(is_undefined(v1)) {
 647         *cmp = is_undefined(v2) ? 0 : 1;
 648     }else if(is_undefined(v2)) {
 649         *cmp = -1;
 650     }else if(is_number(v1) && is_number(v2)) {
 651         double d = get_number(v1)-get_number(v2);
 652         if(d > 0.0)
 653             *cmp = 1;
 654         else
 655             *cmp = d < -0.0 ? -1 : 0;
 656     }else {
 657         BSTR x, y;
 658
 659         hres = to_string(ctx, v1, ei, &x);
 660         if(FAILED(hres))
 661             return hres;
 662
 663         hres = to_string(ctx, v2, ei, &y);
 664         if(SUCCEEDED(hres)) {
 665             *cmp = strcmpW(x, y);
 666             SysFreeString(y);
 667         }
 668         SysFreeString(x);
 669         if(FAILED(hres))
 670             return hres;
 671     }
 672
 673     return S_OK;
 674 }
 675
 676 /* ECMA-262 3rd Edition    15.4.4.11 */
 677 static HRESULT Array_sort(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 678         jsval_t *r, jsexcept_t *ei)
 679 {
 680     jsdisp_t *jsthis, *cmp_func = NULL;
 681     jsval_t *vtab, **sorttab = NULL;
 682     DWORD length;
 683     DWORD i;
 684     HRESULT hres = S_OK;
 685
 686     TRACE("\n");
 687
 688     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 689     if(FAILED(hres))
 690         return hres;
 691
 692     if(argc > 1) {
 693         WARN("invalid arg_cnt %d\n", argc);
 694         return E_FAIL;
 695     }
 696
 697     if(argc == 1) {
 698         if(!is_object_instance(argv[0])) {
 699             WARN("arg is not dispatch\n");
 700             return E_FAIL;
 701         }
 702
 703         cmp_func = iface_to_jsdisp((IUnknown*)get_object(argv[0]));
 704         if(!cmp_func || !is_class(cmp_func, JSCLASS_FUNCTION)) {
 705             WARN("cmp_func is not a function\n");
 706             if(cmp_func)
 707                 jsdisp_release(cmp_func);
 708             return E_FAIL;
 709         }
 710     }
 711
 712     if(!length) {
 713         if(cmp_func)
 714             jsdisp_release(cmp_func);
 715         if(r)
 716             *r = jsval_obj(jsdisp_addref(jsthis));
 717         return S_OK;
 718     }
 719
 720     vtab = heap_alloc_zero(length * sizeof(*vtab));
 721     if(vtab) {
 722         for(i=0; i<length; i++) {
 723             hres = jsdisp_get_idx(jsthis, i, vtab+i, ei);
 724             if(hres == DISP_E_UNKNOWNNAME) {
 725                 vtab[i] = jsval_undefined();
 726                 hres = S_OK;
 727             } else if(FAILED(hres)) {
 728                 WARN("Could not get elem %d: %08x\n", i, hres);
 729                 break;
 730             }
 731         }
 732     }else {
 733         hres = E_OUTOFMEMORY;
 734     }
 735
 736     if(SUCCEEDED(hres)) {
 737         sorttab = heap_alloc(length*2*sizeof(*sorttab));
 738         if(!sorttab)
 739             hres = E_OUTOFMEMORY;
 740     }
 741
 742     /* merge-sort */
 743     if(SUCCEEDED(hres)) {
 744         jsval_t *tmpv, **tmpbuf;
 745         INT cmp;
 746
 747         tmpbuf = sorttab + length;
 748         for(i=0; i < length; i++)
 749             sorttab[i] = vtab+i;
 750
 751         for(i=0; i < length/2; i++) {
 752             hres = sort_cmp(ctx, cmp_func, *sorttab[2*i+1], *sorttab[2*i], ei, &cmp);
 753             if(FAILED(hres))
 754                 break;
 755
 756             if(cmp < 0) {
 757                 tmpv = sorttab[2*i];
 758                 sorttab[2*i] = sorttab[2*i+1];
 759                 sorttab[2*i+1] = tmpv;
 760             }
 761         }
 762
 763         if(SUCCEEDED(hres)) {
 764             DWORD k, a, b, bend;
 765
 766             for(k=2; k < length; k *= 2) {
 767                 for(i=0; i+k < length; i += 2*k) {
 768                     a = b = 0;
 769                     if(i+2*k <= length)
 770                         bend = k;
 771                     else
 772                         bend = length - (i+k);
 773
 774                     memcpy(tmpbuf, sorttab+i, k*sizeof(jsval_t*));
 775
 776                     while(a < k && b < bend) {
 777                         hres = sort_cmp(ctx, cmp_func, *tmpbuf[a], *sorttab[i+k+b], ei, &cmp);
 778                         if(FAILED(hres))
 779                             break;
 780
 781                         if(cmp < 0) {
 782                             sorttab[i+a+b] = tmpbuf[a];
 783                             a++;
 784                         }else {
 785                             sorttab[i+a+b] = sorttab[i+k+b];
 786                             b++;
 787                         }
 788                     }
 789
 790                     if(FAILED(hres))
 791                         break;
 792
 793                     if(a < k)
 794                         memcpy(sorttab+i+a+b, tmpbuf+a, (k-a)*sizeof(jsval_t*));
 795                 }
 796
 797                 if(FAILED(hres))
 798                     break;
 799             }
 800         }
 801
 802         for(i=0; SUCCEEDED(hres) && i < length; i++)
 803             hres = jsdisp_propput_idx(jsthis, i, *sorttab[i], ei);
 804     }
 805
 806     if(vtab) {
 807         for(i=0; i < length; i++)
 808             jsval_release(vtab[i]);
 809         heap_free(vtab);
 810     }
 811     heap_free(sorttab);
 812     if(cmp_func)
 813         jsdisp_release(cmp_func);
 814
 815     if(FAILED(hres))
 816         return hres;
 817
 818     if(r)
 819         *r = jsval_obj(jsdisp_addref(jsthis));
 820     return S_OK;
 821 }
 822
 823 /* ECMA-262 3rd Edition    15.4.4.12 */
 824 static HRESULT Array_splice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 825         jsval_t *r, jsexcept_t *ei)
 826 {
 827     DWORD length, start=0, delete_cnt=0, i, add_args = 0;
 828     jsdisp_t *ret_array = NULL, *jsthis;
 829     jsval_t val;
 830     double d;
 831     int n;
 832     HRESULT hres = S_OK;
 833
 834     TRACE("\n");
 835
 836     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 837     if(FAILED(hres))
 838         return hres;
 839
 840     if(argc) {
 841         hres = to_integer(ctx, argv[0], ei, &d);
 842         if(FAILED(hres))
 843             return hres;
 844
 845         if(is_int32(d)) {
 846             if((n = d) >= 0)
 847                 start = min(n, length);
 848             else
 849                 start = -n > length ? 0 : length + n;
 850         }else {
 851             start = d < 0.0 ? 0 : length;
 852         }
 853     }
 854
 855     if(argc >= 2) {
 856         hres = to_integer(ctx, argv[1], ei, &d);
 857         if(FAILED(hres))
 858             return hres;
 859
 860         if(is_int32(d)) {
 861             if((n = d) > 0)
 862                 delete_cnt = min(n, length-start);
 863         }else if(d > 0.0) {
 864             delete_cnt = length-start;
 865         }
 866
 867         add_args = argc-2;
 868     }
 869
 870     if(r) {
 871         hres = create_array(ctx, 0, &ret_array);
 872         if(FAILED(hres))
 873             return hres;
 874
 875         for(i=0; SUCCEEDED(hres) && i < delete_cnt; i++) {
 876             hres = jsdisp_get_idx(jsthis, start+i, &val, ei);
 877             if(hres == DISP_E_UNKNOWNNAME) {
 878                 hres = S_OK;
 879             }else if(SUCCEEDED(hres)) {
 880                 hres = jsdisp_propput_idx(ret_array, i, val, ei);
 881                 jsval_release(val);
 882             }
 883         }
 884
 885         if(SUCCEEDED(hres))
 886             hres = jsdisp_propput_name(ret_array, lengthW, jsval_number(delete_cnt), ei);
 887     }
 888
 889     if(add_args < delete_cnt) {
 890         for(i = start; SUCCEEDED(hres) && i < length-delete_cnt; i++) {
 891             hres = jsdisp_get_idx(jsthis, i+delete_cnt, &val, ei);
 892             if(hres == DISP_E_UNKNOWNNAME) {
 893                 hres = jsdisp_delete_idx(jsthis, i+add_args);
 894             }else if(SUCCEEDED(hres)) {
 895                 hres = jsdisp_propput_idx(jsthis, i+add_args, val, ei);
 896                 jsval_release(val);
 897             }
 898         }
 899
 900         for(i=length; SUCCEEDED(hres) && i != length-delete_cnt+add_args; i--)
 901             hres = jsdisp_delete_idx(jsthis, i-1);
 902     }else if(add_args > delete_cnt) {
 903         for(i=length-delete_cnt; SUCCEEDED(hres) && i != start; i--) {
 904             hres = jsdisp_get_idx(jsthis, i+delete_cnt-1, &val, ei);
 905             if(hres == DISP_E_UNKNOWNNAME) {
 906                 hres = jsdisp_delete_idx(jsthis, i+add_args-1);
 907             }else if(SUCCEEDED(hres)) {
 908                 hres = jsdisp_propput_idx(jsthis, i+add_args-1, val, ei);
 909                 jsval_release(val);
 910             }
 911         }
 912     }
 913
 914     for(i=0; SUCCEEDED(hres) && i < add_args; i++)
 915         hres = jsdisp_propput_idx(jsthis, start+i, argv[i+2], ei);
 916
 917     if(SUCCEEDED(hres))
 918         hres = jsdisp_propput_name(jsthis, lengthW, jsval_number(length-delete_cnt+add_args), ei);
 919
 920     if(FAILED(hres)) {
 921         if(ret_array)
 922             jsdisp_release(ret_array);
 923         return hres;
 924     }
 925
 926     if(r)
 927         *r = jsval_obj(ret_array);
 928     return S_OK;
 929 }
 930
 931 /* ECMA-262 3rd Edition    15.4.4.2 */
 932 static HRESULT Array_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 933         jsval_t *r, jsexcept_t *ei)
 934 {
 935     ArrayInstance *array;
 936
 937     TRACE("\n");
 938
 939     array = array_this(jsthis);
 940     if(!array)
 941         return throw_type_error(ctx, ei, JS_E_ARRAY_EXPECTED, NULL);
 942
 943     return array_join(ctx, &array->dispex, array->length, default_separatorW, r, ei);
 944 }
 945
 946 static HRESULT Array_toLocaleString(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 947         jsval_t *r, jsexcept_t *ei)
 948 {
 949     FIXME("\n");
 950     return E_NOTIMPL;
 951 }
 952
 953 /* ECMA-262 3rd Edition    15.4.4.13 */
 954 static HRESULT Array_unshift(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 955         jsval_t *r, jsexcept_t *ei)
 956 {
 957     jsdisp_t *jsthis;
 958     WCHAR buf[14], *buf_end, *str;
 959     DWORD i, length;
 960     jsval_t val;
 961     DISPID id;
 962     HRESULT hres;
 963
 964     TRACE("\n");
 965
 966     hres = get_length(ctx, vthis, ei, &jsthis, &length);
 967     if(FAILED(hres))
 968         return hres;
 969
 970     if(argc) {
 971         buf_end = buf + sizeof(buf)/sizeof(WCHAR)-1;
 972         *buf_end-- = 0;
 973         i = length;
 974
 975         while(i--) {
 976             str = idx_to_str(i, buf_end);
 977
 978             hres = jsdisp_get_id(jsthis, str, 0, &id);
 979             if(SUCCEEDED(hres)) {
 980                 hres = jsdisp_propget(jsthis, id, &val, ei);
 981                 if(FAILED(hres))
 982                     return hres;
 983
 984                 hres = jsdisp_propput_idx(jsthis, i+argc, val, ei);
 985                 jsval_release(val);
 986             }else if(hres == DISP_E_UNKNOWNNAME) {
 987                 hres = IDispatchEx_DeleteMemberByDispID(vthis->u.dispex, id);
 988             }
 989         }
 990
 991         if(FAILED(hres))
 992             return hres;
 993     }
 994
 995     for(i=0; i<argc; i++) {
 996         hres = jsdisp_propput_idx(jsthis, i, argv[i], ei);
 997         if(FAILED(hres))
 998             return hres;
 999     }
1000
1001     if(argc) {
1002         length += argc;
1003         hres = set_length(jsthis, ei, length);
1004         if(FAILED(hres))
1005             return hres;
1006     }
1007
1008     if(r)
1009         *r = ctx->version < 2 ? jsval_undefined() : jsval_number(length);
1010     return S_OK;
1011 }
1012
1013 static HRESULT Array_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
1014         jsval_t *r, jsexcept_t *ei)
1015 {
1016     TRACE("\n");
1017
1018     switch(flags) {
1019     case INVOKE_FUNC:
1020         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
1021     case INVOKE_PROPERTYGET:
1022         return array_join(ctx, jsthis->u.jsdisp, array_from_vdisp(jsthis)->length, default_separatorW, r, ei);
1023     default:
1024         FIXME("unimplemented flags %x\n", flags);
1025         return E_NOTIMPL;
1026     }
1027
1028     return S_OK;
1029 }
1030
1031 static void Array_destructor(jsdisp_t *dispex)
1032 {
1033     heap_free(dispex);
1034 }
1035
1036 static void Array_on_put(jsdisp_t *dispex, const WCHAR *name)
1037 {
1038     ArrayInstance *array = (ArrayInstance*)dispex;
1039     const WCHAR *ptr = name;
1040     DWORD id = 0;
1041
1042     if(!isdigitW(*ptr))
1043         return;
1044
1045     while(*ptr && isdigitW(*ptr)) {
1046         id = id*10 + (*ptr-'0');
1047         ptr++;
1048     }
1049
1050     if(*ptr)
1051         return;
1052
1053     if(id >= array->length)
1054         array->length = id+1;
1055 }
1056
1057 static const builtin_prop_t Array_props[] = {
1058     {concatW,                Array_concat,               PROPF_METHOD|1},
1059     {joinW,                  Array_join,                 PROPF_METHOD|1},
1060     {lengthW,                Array_length,               0},
1061     {popW,                   Array_pop,                  PROPF_METHOD},
1062     {pushW,                  Array_push,                 PROPF_METHOD|1},
1063     {reverseW,               Array_reverse,              PROPF_METHOD},
1064     {shiftW,                 Array_shift,                PROPF_METHOD},
1065     {sliceW,                 Array_slice,                PROPF_METHOD|2},
1066     {sortW,                  Array_sort,                 PROPF_METHOD|1},
1067     {spliceW,                Array_splice,               PROPF_METHOD|2},
1068     {toLocaleStringW,        Array_toLocaleString,       PROPF_METHOD},
1069     {toStringW,              Array_toString,             PROPF_METHOD},
1070     {unshiftW,               Array_unshift,              PROPF_METHOD|1},
1071 };
1072
1073 static const builtin_info_t Array_info = {
1074     JSCLASS_ARRAY,
1075     {NULL, Array_value, 0},
1076     sizeof(Array_props)/sizeof(*Array_props),
1077     Array_props,
1078     Array_destructor,
1079     Array_on_put
1080 };
1081
1082 static const builtin_prop_t ArrayInst_props[] = {
1083     {lengthW,                Array_length,               0}
1084 };
1085
1086 static const builtin_info_t ArrayInst_info = {
1087     JSCLASS_ARRAY,
1088     {NULL, Array_value, 0},
1089     sizeof(ArrayInst_props)/sizeof(*ArrayInst_props),
1090     ArrayInst_props,
1091     Array_destructor,
1092     Array_on_put
1093 };
1094
1095 static HRESULT ArrayConstr_value(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
1096         jsval_t *r, jsexcept_t *ei)
1097 {
1098     jsdisp_t *obj;
1099     DWORD i;
1100     HRESULT hres;
1101
1102     TRACE("\n");
1103
1104     switch(flags) {
1105     case DISPATCH_METHOD:
1106     case DISPATCH_CONSTRUCT: {
1107         if(argc == 1 && is_number(argv[0])) {
1108             double n = get_number(argv[0]);
1109
1110             if(n < 0 || !is_int32(n))
1111                 return throw_range_error(ctx, ei, JS_E_INVALID_LENGTH, NULL);
1112
1113             hres = create_array(ctx, n, &obj);
1114             if(FAILED(hres))
1115                 return hres;
1116
1117             *r = jsval_obj(obj);
1118             return S_OK;
1119         }
1120
1121         hres = create_array(ctx, argc, &obj);
1122         if(FAILED(hres))
1123             return hres;
1124
1125         for(i=0; i < argc; i++) {
1126             hres = jsdisp_propput_idx(obj, i, argv[i], ei);
1127             if(FAILED(hres))
1128                 break;
1129         }
1130         if(FAILED(hres)) {
1131             jsdisp_release(obj);
1132             return hres;
1133         }
1134
1135         *r = jsval_obj(obj);
1136         break;
1137     }
1138     default:
1139         FIXME("unimplemented flags: %x\n", flags);
1140         return E_NOTIMPL;
1141     }
1142
1143     return S_OK;
1144 }
1145
1146 static HRESULT alloc_array(script_ctx_t *ctx, jsdisp_t *object_prototype, ArrayInstance **ret)
1147 {
1148     ArrayInstance *array;
1149     HRESULT hres;
1150
1151     array = heap_alloc_zero(sizeof(ArrayInstance));
1152     if(!array)
1153         return E_OUTOFMEMORY;
1154
1155     if(object_prototype)
1156         hres = init_dispex(&array->dispex, ctx, &Array_info, object_prototype);
1157     else
1158         hres = init_dispex_from_constr(&array->dispex, ctx, &ArrayInst_info, ctx->array_constr);
1159
1160     if(FAILED(hres)) {
1161         heap_free(array);
1162         return hres;
1163     }
1164
1165     *ret = array;
1166     return S_OK;
1167 }
1168
1169 HRESULT create_array_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
1170 {
1171     ArrayInstance *array;
1172     HRESULT hres;
1173
1174     static const WCHAR ArrayW[] = {'A','r','r','a','y',0};
1175
1176     hres = alloc_array(ctx, object_prototype, &array);
1177     if(FAILED(hres))
1178         return hres;
1179
1180     hres = create_builtin_constructor(ctx, ArrayConstr_value, ArrayW, NULL, PROPF_CONSTR|1, &array->dispex, ret);
1181
1182     jsdisp_release(&array->dispex);
1183     return hres;
1184 }
1185
1186 HRESULT create_array(script_ctx_t *ctx, DWORD length, jsdisp_t **ret)
1187 {
1188     ArrayInstance *array;
1189     HRESULT hres;
1190
1191     hres = alloc_array(ctx, NULL, &array);
1192     if(FAILED(hres))
1193         return hres;
1194
1195     array->length = length;
1196
1197     *ret = &array->dispex;
1198     return S_OK;
1199 }