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