reactos/dll/win32/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 "jscript.h"
  20
  21 typedef struct {
  22     jsdisp_t dispex;
  23
  24     DWORD length;
  25 } ArrayInstance;
  26
  27 static const WCHAR lengthW[] = {'l','e','n','g','t','h',0};
  28 static const WCHAR concatW[] = {'c','o','n','c','a','t',0};
  29 static const WCHAR joinW[] = {'j','o','i','n',0};
  30 static const WCHAR popW[] = {'p','o','p',0};
  31 static const WCHAR pushW[] = {'p','u','s','h',0};
  32 static const WCHAR reverseW[] = {'r','e','v','e','r','s','e',0};
  33 static const WCHAR shiftW[] = {'s','h','i','f','t',0};
  34 static const WCHAR sliceW[] = {'s','l','i','c','e',0};
  35 static const WCHAR sortW[] = {'s','o','r','t',0};
  36 static const WCHAR spliceW[] = {'s','p','l','i','c','e',0};
  37 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
  38 static const WCHAR toLocaleStringW[] = {'t','o','L','o','c','a','l','e','S','t','r','i','n','g',0};
  39 static const WCHAR unshiftW[] = {'u','n','s','h','i','f','t',0};
  40
  41 static const WCHAR default_separatorW[] = {',',0};
  42
  43 static inline ArrayInstance *array_from_jsdisp(jsdisp_t *jsdisp)
  44 {
  45     return CONTAINING_RECORD(jsdisp, ArrayInstance, dispex);
  46 }
  47
  48 static inline ArrayInstance *array_from_vdisp(vdisp_t *vdisp)
  49 {
  50     return array_from_jsdisp(vdisp->u.jsdisp);
  51 }
  52
  53 static inline ArrayInstance *array_this(vdisp_t *jsthis)
  54 {
  55     return is_vclass(jsthis, JSCLASS_ARRAY) ? array_from_vdisp(jsthis) : NULL;
  56 }
  57
  58 unsigned array_get_length(jsdisp_t *array)
  59 {
  60     assert(is_class(array, JSCLASS_ARRAY));
  61     return array_from_jsdisp(array)->length;
  62 }
  63
  64 static HRESULT get_length(script_ctx_t *ctx, vdisp_t *vdisp, jsdisp_t **jsthis, DWORD *ret)
  65 {
  66     ArrayInstance *array;
  67     jsval_t val;
  68     HRESULT hres;
  69
  70     array = array_this(vdisp);
  71     if(array) {
  72         *jsthis = &array->dispex;
  73         *ret = array->length;
  74         return S_OK;
  75     }
  76
  77     if(!is_jsdisp(vdisp))
  78         return throw_type_error(ctx, JS_E_JSCRIPT_EXPECTED, NULL);
  79
  80     hres = jsdisp_propget_name(vdisp->u.jsdisp, lengthW, &val);
  81     if(FAILED(hres))
  82         return hres;
  83
  84     hres = to_uint32(ctx, val, ret);
  85     jsval_release(val);
  86     if(FAILED(hres))
  87         return hres;
  88
  89     *jsthis = vdisp->u.jsdisp;
  90     return S_OK;
  91 }
  92
  93 static HRESULT set_length(jsdisp_t *obj, DWORD length)
  94 {
  95     if(is_class(obj, JSCLASS_ARRAY)) {
  96         ((ArrayInstance*)obj)->length = length;
  97         return S_OK;
  98     }
  99
 100     return jsdisp_propput_name(obj, lengthW, jsval_number(length));
 101 }
 102
 103 static WCHAR *idx_to_str(DWORD idx, WCHAR *ptr)
 104 {
 105     if(!idx) {
 106         *ptr = '0';
 107         return ptr;
 108     }
 109
 110     while(idx) {
 111         *ptr-- = '0' + (idx%10);
 112         idx /= 10;
 113     }
 114
 115     return ptr+1;
 116 }
 117
 118 static HRESULT Array_get_length(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t *r)
 119 {
 120     TRACE("%p\n", jsthis);
 121
 122     *r = jsval_number(array_from_jsdisp(jsthis)->length);
 123     return S_OK;
 124 }
 125
 126 static HRESULT Array_set_length(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t value)
 127 {
 128     ArrayInstance *This = array_from_jsdisp(jsthis);
 129     DOUBLE len = -1;
 130     DWORD i;
 131     HRESULT hres;
 132
 133     TRACE("%p %d\n", This, This->length);
 134
 135     hres = to_number(ctx, value, &len);
 136     if(FAILED(hres))
 137         return hres;
 138
 139     len = floor(len);
 140     if(len!=(DWORD)len)
 141         return throw_range_error(ctx, JS_E_INVALID_LENGTH, NULL);
 142
 143     for(i=len; i < This->length; i++) {
 144         hres = jsdisp_delete_idx(&This->dispex, i);
 145         if(FAILED(hres))
 146             return hres;
 147     }
 148
 149     This->length = len;
 150     return S_OK;
 151 }
 152
 153 static HRESULT concat_array(jsdisp_t *array, ArrayInstance *obj, DWORD *len)
 154 {
 155     jsval_t val;
 156     DWORD i;
 157     HRESULT hres;
 158
 159     for(i=0; i < obj->length; i++) {
 160         hres = jsdisp_get_idx(&obj->dispex, i, &val);
 161         if(hres == DISP_E_UNKNOWNNAME)
 162             continue;
 163         if(FAILED(hres))
 164             return hres;
 165
 166         hres = jsdisp_propput_idx(array, *len+i, val);
 167         jsval_release(val);
 168         if(FAILED(hres))
 169             return hres;
 170     }
 171
 172     *len += obj->length;
 173     return S_OK;
 174 }
 175
 176 static HRESULT concat_obj(jsdisp_t *array, IDispatch *obj, DWORD *len)
 177 {
 178     jsdisp_t *jsobj;
 179     HRESULT hres;
 180
 181     jsobj = iface_to_jsdisp(obj);
 182     if(jsobj) {
 183         if(is_class(jsobj, JSCLASS_ARRAY)) {
 184             hres = concat_array(array, (ArrayInstance*)jsobj, len);
 185             jsdisp_release(jsobj);
 186             return hres;
 187         }
 188         jsdisp_release(jsobj);
 189     }
 190
 191     return jsdisp_propput_idx(array, (*len)++, jsval_disp(obj));
 192 }
 193
 194 static HRESULT Array_concat(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 195         jsval_t *r)
 196 {
 197     jsdisp_t *ret;
 198     DWORD len = 0;
 199     HRESULT hres;
 200
 201     TRACE("\n");
 202
 203     hres = create_array(ctx, 0, &ret);
 204     if(FAILED(hres))
 205         return hres;
 206
 207     hres = concat_obj(ret, jsthis->u.disp, &len);
 208     if(SUCCEEDED(hres)) {
 209         DWORD i;
 210
 211         for(i=0; i < argc; i++) {
 212             if(is_object_instance(argv[i]))
 213                 hres = concat_obj(ret, get_object(argv[i]), &len);
 214             else
 215                 hres = jsdisp_propput_idx(ret, len++, argv[i]);
 216             if(FAILED(hres))
 217                 break;
 218         }
 219     }
 220
 221     if(FAILED(hres))
 222         return hres;
 223
 224     if(r)
 225         *r = jsval_obj(ret);
 226     else
 227         jsdisp_release(ret);
 228     return S_OK;
 229 }
 230
 231 static HRESULT array_join(script_ctx_t *ctx, jsdisp_t *array, DWORD length, const WCHAR *sep, jsval_t *r)
 232 {
 233     jsstr_t **str_tab, *ret;
 234     jsval_t val;
 235     DWORD i;
 236     HRESULT hres = E_FAIL;
 237
 238     if(!length) {
 239         if(r)
 240             *r = jsval_string(jsstr_empty());
 241         return S_OK;
 242     }
 243
 244     str_tab = heap_alloc_zero(length * sizeof(*str_tab));
 245     if(!str_tab)
 246         return E_OUTOFMEMORY;
 247
 248     for(i=0; i < length; i++) {
 249         hres = jsdisp_get_idx(array, i, &val);
 250         if(hres == DISP_E_UNKNOWNNAME) {
 251             hres = S_OK;
 252             continue;
 253         } else if(FAILED(hres))
 254             break;
 255
 256         if(!is_undefined(val) && !is_null(val)) {
 257             hres = to_string(ctx, val, str_tab+i);
 258             jsval_release(val);
 259             if(FAILED(hres))
 260                 break;
 261         }
 262     }
 263
 264     if(SUCCEEDED(hres)) {
 265         DWORD seplen = 0, len = 0;
 266
 267         seplen = strlenW(sep);
 268
 269         if(str_tab[0])
 270             len = jsstr_length(str_tab[0]);
 271         for(i=1; i < length; i++) {
 272             len += seplen;
 273             if(str_tab[i])
 274                 len += jsstr_length(str_tab[i]);
 275             if(len > JSSTR_MAX_LENGTH) {
 276                 hres = E_OUTOFMEMORY;
 277                 break;
 278             }
 279         }
 280
 281         if(SUCCEEDED(hres)) {
 282             WCHAR *ptr = NULL;
 283
 284             ptr = jsstr_alloc_buf(len, &ret);
 285             if(ptr) {
 286                 if(str_tab[0])
 287                     ptr += jsstr_flush(str_tab[0], ptr);
 288
 289                 for(i=1; i < length; i++) {
 290                     if(seplen) {
 291                         memcpy(ptr, sep, seplen*sizeof(WCHAR));
 292                         ptr += seplen;
 293                     }
 294
 295                     if(str_tab[i])
 296                         ptr += jsstr_flush(str_tab[i], ptr);
 297                 }
 298             }else {
 299                 hres = E_OUTOFMEMORY;
 300             }
 301         }
 302     }
 303
 304     for(i=0; i < length; i++) {
 305         if(str_tab[i])
 306             jsstr_release(str_tab[i]);
 307     }
 308     heap_free(str_tab);
 309     if(FAILED(hres))
 310         return hres;
 311
 312     TRACE("= %s\n", debugstr_jsstr(ret));
 313
 314     if(r)
 315         *r = jsval_string(ret);
 316     else
 317         jsstr_release(ret);
 318     return S_OK;
 319 }
 320
 321 /* ECMA-262 3rd Edition    15.4.4.5 */
 322 static HRESULT Array_join(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 323         jsval_t *r)
 324 {
 325     jsdisp_t *jsthis;
 326     DWORD length;
 327     HRESULT hres;
 328
 329     TRACE("\n");
 330
 331     hres = get_length(ctx, vthis, &jsthis, &length);
 332     if(FAILED(hres))
 333         return hres;
 334
 335     if(argc) {
 336         const WCHAR *sep;
 337         jsstr_t *sep_str;
 338
 339         hres = to_flat_string(ctx, argv[0], &sep_str, &sep);
 340         if(FAILED(hres))
 341             return hres;
 342
 343         hres = array_join(ctx, jsthis, length, sep, r);
 344
 345         jsstr_release(sep_str);
 346     }else {
 347         hres = array_join(ctx, jsthis, length, default_separatorW, r);
 348     }
 349
 350     return hres;
 351 }
 352
 353 static HRESULT Array_pop(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 354         jsval_t *r)
 355 {
 356     jsdisp_t *jsthis;
 357     jsval_t val;
 358     DWORD length;
 359     HRESULT hres;
 360
 361     TRACE("\n");
 362
 363     hres = get_length(ctx, vthis, &jsthis, &length);
 364     if(FAILED(hres))
 365         return hres;
 366
 367     if(!length) {
 368         hres = set_length(jsthis, 0);
 369         if(FAILED(hres))
 370             return hres;
 371
 372         if(r)
 373             *r = jsval_undefined();
 374         return S_OK;
 375     }
 376
 377     length--;
 378     hres = jsdisp_get_idx(jsthis, length, &val);
 379     if(SUCCEEDED(hres))
 380         hres = jsdisp_delete_idx(jsthis, length);
 381     else if(hres == DISP_E_UNKNOWNNAME)
 382         val = jsval_undefined();
 383     else
 384         return hres;
 385
 386     if(SUCCEEDED(hres))
 387         hres = set_length(jsthis, length);
 388
 389     if(FAILED(hres)) {
 390         jsval_release(val);
 391         return hres;
 392     }
 393
 394     if(r)
 395         *r = val;
 396     else
 397         jsval_release(val);
 398     return hres;
 399 }
 400
 401 /* ECMA-262 3rd Edition    15.4.4.7 */
 402 static HRESULT Array_push(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 403         jsval_t *r)
 404 {
 405     jsdisp_t *jsthis;
 406     DWORD length = 0;
 407     unsigned i;
 408     HRESULT hres;
 409
 410     TRACE("\n");
 411
 412     hres = get_length(ctx, vthis, &jsthis, &length);
 413     if(FAILED(hres))
 414         return hres;
 415
 416     for(i=0; i < argc; i++) {
 417         hres = jsdisp_propput_idx(jsthis, length+i, argv[i]);
 418         if(FAILED(hres))
 419             return hres;
 420     }
 421
 422     hres = set_length(jsthis, length+argc);
 423     if(FAILED(hres))
 424         return hres;
 425
 426     if(r)
 427         *r = jsval_number(length+argc);
 428     return S_OK;
 429 }
 430
 431 static HRESULT Array_reverse(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 432         jsval_t *r)
 433 {
 434     jsdisp_t *jsthis;
 435     DWORD length, k, l;
 436     jsval_t v1, v2;
 437     HRESULT hres1, hres2;
 438
 439     TRACE("\n");
 440
 441     hres1 = get_length(ctx, vthis, &jsthis, &length);
 442     if(FAILED(hres1))
 443         return hres1;
 444
 445     for(k=0; k<length/2; k++) {
 446         l = length-k-1;
 447
 448         hres1 = jsdisp_get_idx(jsthis, k, &v1);
 449         if(FAILED(hres1) && hres1!=DISP_E_UNKNOWNNAME)
 450             return hres1;
 451
 452         hres2 = jsdisp_get_idx(jsthis, l, &v2);
 453         if(FAILED(hres2) && hres2!=DISP_E_UNKNOWNNAME) {
 454             jsval_release(v1);
 455             return hres2;
 456         }
 457
 458         if(hres1 == DISP_E_UNKNOWNNAME)
 459             hres1 = jsdisp_delete_idx(jsthis, l);
 460         else
 461             hres1 = jsdisp_propput_idx(jsthis, l, v1);
 462
 463         if(FAILED(hres1)) {
 464             jsval_release(v1);
 465             jsval_release(v2);
 466             return hres1;
 467         }
 468
 469         if(hres2 == DISP_E_UNKNOWNNAME)
 470             hres2 = jsdisp_delete_idx(jsthis, k);
 471         else
 472             hres2 = jsdisp_propput_idx(jsthis, k, v2);
 473
 474         if(FAILED(hres2)) {
 475             jsval_release(v2);
 476             return hres2;
 477         }
 478     }
 479
 480     if(r)
 481         *r = jsval_obj(jsdisp_addref(jsthis));
 482     return S_OK;
 483 }
 484
 485 /* ECMA-262 3rd Edition    15.4.4.9 */
 486 static HRESULT Array_shift(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 487         jsval_t *r)
 488 {
 489     jsdisp_t *jsthis;
 490     DWORD length = 0, i;
 491     jsval_t v, ret;
 492     HRESULT hres;
 493
 494     TRACE("\n");
 495
 496     hres = get_length(ctx, vthis, &jsthis, &length);
 497     if(FAILED(hres))
 498         return hres;
 499
 500     if(!length) {
 501         hres = set_length(jsthis, 0);
 502         if(FAILED(hres))
 503             return hres;
 504
 505         if(r)
 506             *r = jsval_undefined();
 507         return S_OK;
 508     }
 509
 510     hres = jsdisp_get_idx(jsthis, 0, &ret);
 511     if(hres == DISP_E_UNKNOWNNAME) {
 512         ret = jsval_undefined();
 513         hres = S_OK;
 514     }
 515
 516     for(i=1; SUCCEEDED(hres) && i<length; i++) {
 517         hres = jsdisp_get_idx(jsthis, i, &v);
 518         if(hres == DISP_E_UNKNOWNNAME)
 519             hres = jsdisp_delete_idx(jsthis, i-1);
 520         else if(SUCCEEDED(hres))
 521             hres = jsdisp_propput_idx(jsthis, i-1, v);
 522     }
 523
 524     if(SUCCEEDED(hres)) {
 525         hres = jsdisp_delete_idx(jsthis, length-1);
 526         if(SUCCEEDED(hres))
 527             hres = set_length(jsthis, length-1);
 528     }
 529
 530     if(FAILED(hres))
 531         return hres;
 532
 533     if(r)
 534         *r = ret;
 535     else
 536         jsval_release(ret);
 537     return hres;
 538 }
 539
 540 /* ECMA-262 3rd Edition    15.4.4.10 */
 541 static HRESULT Array_slice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
 542 {
 543     jsdisp_t *arr, *jsthis;
 544     DOUBLE range;
 545     DWORD length, start, end, idx;
 546     HRESULT hres;
 547
 548     TRACE("\n");
 549
 550     hres = get_length(ctx, vthis, &jsthis, &length);
 551     if(FAILED(hres))
 552         return hres;
 553
 554     if(argc) {
 555         hres = to_number(ctx, argv[0], &range);
 556         if(FAILED(hres))
 557             return hres;
 558
 559         range = floor(range);
 560         if(-range>length || isnan(range)) start = 0;
 561         else if(range < 0) start = range+length;
 562         else if(range <= length) start = range;
 563         else start = length;
 564     }
 565     else start = 0;
 566
 567     if(argc > 1) {
 568         hres = to_number(ctx, argv[1], &range);
 569         if(FAILED(hres))
 570             return hres;
 571
 572         range = floor(range);
 573         if(-range>length) end = 0;
 574         else if(range < 0) end = range+length;
 575         else if(range <= length) end = range;
 576         else end = length;
 577     }
 578     else end = length;
 579
 580     hres = create_array(ctx, (end>start)?end-start:0, &arr);
 581     if(FAILED(hres))
 582         return hres;
 583
 584     for(idx=start; idx<end; idx++) {
 585         jsval_t v;
 586
 587         hres = jsdisp_get_idx(jsthis, idx, &v);
 588         if(hres == DISP_E_UNKNOWNNAME)
 589             continue;
 590
 591         if(SUCCEEDED(hres)) {
 592             hres = jsdisp_propput_idx(arr, idx-start, v);
 593             jsval_release(v);
 594         }
 595
 596         if(FAILED(hres)) {
 597             jsdisp_release(arr);
 598             return hres;
 599         }
 600     }
 601
 602     if(r)
 603         *r = jsval_obj(arr);
 604     else
 605         jsdisp_release(arr);
 606
 607     return S_OK;
 608 }
 609
 610 static HRESULT sort_cmp(script_ctx_t *ctx, jsdisp_t *cmp_func, jsval_t v1, jsval_t v2, INT *cmp)
 611 {
 612     HRESULT hres;
 613
 614     if(cmp_func) {
 615         jsval_t args[2];
 616         jsval_t res;
 617         double n;
 618
 619         args[0] = v1;
 620         args[1] = v2;
 621
 622         hres = jsdisp_call_value(cmp_func, NULL, DISPATCH_METHOD, 2, args, &res);
 623         if(FAILED(hres))
 624             return hres;
 625
 626         hres = to_number(ctx, res, &n);
 627         jsval_release(res);
 628         if(FAILED(hres))
 629             return hres;
 630
 631         if(n == 0)
 632             *cmp = 0;
 633         *cmp = n > 0.0 ? 1 : -1;
 634     }else if(is_undefined(v1)) {
 635         *cmp = is_undefined(v2) ? 0 : 1;
 636     }else if(is_undefined(v2)) {
 637         *cmp = -1;
 638     }else if(is_number(v1) && is_number(v2)) {
 639         double d = get_number(v1)-get_number(v2);
 640         if(d > 0.0)
 641             *cmp = 1;
 642         else
 643             *cmp = d < -0.0 ? -1 : 0;
 644     }else {
 645         jsstr_t *x, *y;
 646
 647         hres = to_string(ctx, v1, &x);
 648         if(FAILED(hres))
 649             return hres;
 650
 651         hres = to_string(ctx, v2, &y);
 652         if(SUCCEEDED(hres)) {
 653             *cmp = jsstr_cmp(x, y);
 654             jsstr_release(y);
 655         }
 656         jsstr_release(x);
 657         if(FAILED(hres))
 658             return hres;
 659     }
 660
 661     return S_OK;
 662 }
 663
 664 /* ECMA-262 3rd Edition    15.4.4.11 */
 665 static HRESULT Array_sort(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 666         jsval_t *r)
 667 {
 668     jsdisp_t *jsthis, *cmp_func = NULL;
 669     jsval_t *vtab, **sorttab = NULL;
 670     DWORD length;
 671     DWORD i;
 672     HRESULT hres = S_OK;
 673
 674     TRACE("\n");
 675
 676     hres = get_length(ctx, vthis, &jsthis, &length);
 677     if(FAILED(hres))
 678         return hres;
 679
 680     if(argc > 1) {
 681         WARN("invalid arg_cnt %d\n", argc);
 682         return E_FAIL;
 683     }
 684
 685     if(argc == 1) {
 686         if(!is_object_instance(argv[0])) {
 687             WARN("arg is not dispatch\n");
 688             return E_FAIL;
 689         }
 690
 691         cmp_func = iface_to_jsdisp(get_object(argv[0]));
 692         if(!cmp_func || !is_class(cmp_func, JSCLASS_FUNCTION)) {
 693             WARN("cmp_func is not a function\n");
 694             if(cmp_func)
 695                 jsdisp_release(cmp_func);
 696             return E_FAIL;
 697         }
 698     }
 699
 700     if(!length) {
 701         if(cmp_func)
 702             jsdisp_release(cmp_func);
 703         if(r)
 704             *r = jsval_obj(jsdisp_addref(jsthis));
 705         return S_OK;
 706     }
 707
 708     vtab = heap_alloc_zero(length * sizeof(*vtab));
 709     if(vtab) {
 710         for(i=0; i<length; i++) {
 711             hres = jsdisp_get_idx(jsthis, i, vtab+i);
 712             if(hres == DISP_E_UNKNOWNNAME) {
 713                 vtab[i] = jsval_undefined();
 714                 hres = S_OK;
 715             } else if(FAILED(hres)) {
 716                 WARN("Could not get elem %d: %08x\n", i, hres);
 717                 break;
 718             }
 719         }
 720     }else {
 721         hres = E_OUTOFMEMORY;
 722     }
 723
 724     if(SUCCEEDED(hres)) {
 725         sorttab = heap_alloc(length*2*sizeof(*sorttab));
 726         if(!sorttab)
 727             hres = E_OUTOFMEMORY;
 728     }
 729
 730     /* merge-sort */
 731     if(SUCCEEDED(hres)) {
 732         jsval_t *tmpv, **tmpbuf;
 733         INT cmp;
 734
 735         tmpbuf = sorttab + length;
 736         for(i=0; i < length; i++)
 737             sorttab[i] = vtab+i;
 738
 739         for(i=0; i < length/2; i++) {
 740             hres = sort_cmp(ctx, cmp_func, *sorttab[2*i+1], *sorttab[2*i], &cmp);
 741             if(FAILED(hres))
 742                 break;
 743
 744             if(cmp < 0) {
 745                 tmpv = sorttab[2*i];
 746                 sorttab[2*i] = sorttab[2*i+1];
 747                 sorttab[2*i+1] = tmpv;
 748             }
 749         }
 750
 751         if(SUCCEEDED(hres)) {
 752             DWORD k, a, b, bend;
 753
 754             for(k=2; k < length; k *= 2) {
 755                 for(i=0; i+k < length; i += 2*k) {
 756                     a = b = 0;
 757                     if(i+2*k <= length)
 758                         bend = k;
 759                     else
 760                         bend = length - (i+k);
 761
 762                     memcpy(tmpbuf, sorttab+i, k*sizeof(jsval_t*));
 763
 764                     while(a < k && b < bend) {
 765                         hres = sort_cmp(ctx, cmp_func, *tmpbuf[a], *sorttab[i+k+b], &cmp);
 766                         if(FAILED(hres))
 767                             break;
 768
 769                         if(cmp < 0) {
 770                             sorttab[i+a+b] = tmpbuf[a];
 771                             a++;
 772                         }else {
 773                             sorttab[i+a+b] = sorttab[i+k+b];
 774                             b++;
 775                         }
 776                     }
 777
 778                     if(FAILED(hres))
 779                         break;
 780
 781                     if(a < k)
 782                         memcpy(sorttab+i+a+b, tmpbuf+a, (k-a)*sizeof(jsval_t*));
 783                 }
 784
 785                 if(FAILED(hres))
 786                     break;
 787             }
 788         }
 789
 790         for(i=0; SUCCEEDED(hres) && i < length; i++)
 791             hres = jsdisp_propput_idx(jsthis, i, *sorttab[i]);
 792     }
 793
 794     if(vtab) {
 795         for(i=0; i < length; i++)
 796             jsval_release(vtab[i]);
 797         heap_free(vtab);
 798     }
 799     heap_free(sorttab);
 800     if(cmp_func)
 801         jsdisp_release(cmp_func);
 802
 803     if(FAILED(hres))
 804         return hres;
 805
 806     if(r)
 807         *r = jsval_obj(jsdisp_addref(jsthis));
 808     return S_OK;
 809 }
 810
 811 /* ECMA-262 3rd Edition    15.4.4.12 */
 812 static HRESULT Array_splice(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 813         jsval_t *r)
 814 {
 815     DWORD length, start=0, delete_cnt=0, i, add_args = 0;
 816     jsdisp_t *ret_array = NULL, *jsthis;
 817     jsval_t val;
 818     double d;
 819     int n;
 820     HRESULT hres = S_OK;
 821
 822     TRACE("\n");
 823
 824     hres = get_length(ctx, vthis, &jsthis, &length);
 825     if(FAILED(hres))
 826         return hres;
 827
 828     if(argc) {
 829         hres = to_integer(ctx, argv[0], &d);
 830         if(FAILED(hres))
 831             return hres;
 832
 833         if(is_int32(d)) {
 834             if((n = d) >= 0)
 835                 start = min(n, length);
 836             else
 837                 start = -n > length ? 0 : length + n;
 838         }else {
 839             start = d < 0.0 ? 0 : length;
 840         }
 841     }
 842
 843     if(argc >= 2) {
 844         hres = to_integer(ctx, argv[1], &d);
 845         if(FAILED(hres))
 846             return hres;
 847
 848         if(is_int32(d)) {
 849             if((n = d) > 0)
 850                 delete_cnt = min(n, length-start);
 851         }else if(d > 0.0) {
 852             delete_cnt = length-start;
 853         }
 854
 855         add_args = argc-2;
 856     }
 857
 858     if(r) {
 859         hres = create_array(ctx, 0, &ret_array);
 860         if(FAILED(hres))
 861             return hres;
 862
 863         for(i=0; SUCCEEDED(hres) && i < delete_cnt; i++) {
 864             hres = jsdisp_get_idx(jsthis, start+i, &val);
 865             if(hres == DISP_E_UNKNOWNNAME) {
 866                 hres = S_OK;
 867             }else if(SUCCEEDED(hres)) {
 868                 hres = jsdisp_propput_idx(ret_array, i, val);
 869                 jsval_release(val);
 870             }
 871         }
 872
 873         if(SUCCEEDED(hres))
 874             hres = jsdisp_propput_name(ret_array, lengthW, jsval_number(delete_cnt));
 875     }
 876
 877     if(add_args < delete_cnt) {
 878         for(i = start; SUCCEEDED(hres) && i < length-delete_cnt; i++) {
 879             hres = jsdisp_get_idx(jsthis, i+delete_cnt, &val);
 880             if(hres == DISP_E_UNKNOWNNAME) {
 881                 hres = jsdisp_delete_idx(jsthis, i+add_args);
 882             }else if(SUCCEEDED(hres)) {
 883                 hres = jsdisp_propput_idx(jsthis, i+add_args, val);
 884                 jsval_release(val);
 885             }
 886         }
 887
 888         for(i=length; SUCCEEDED(hres) && i != length-delete_cnt+add_args; i--)
 889             hres = jsdisp_delete_idx(jsthis, i-1);
 890     }else if(add_args > delete_cnt) {
 891         for(i=length-delete_cnt; SUCCEEDED(hres) && i != start; i--) {
 892             hres = jsdisp_get_idx(jsthis, i+delete_cnt-1, &val);
 893             if(hres == DISP_E_UNKNOWNNAME) {
 894                 hres = jsdisp_delete_idx(jsthis, i+add_args-1);
 895             }else if(SUCCEEDED(hres)) {
 896                 hres = jsdisp_propput_idx(jsthis, i+add_args-1, val);
 897                 jsval_release(val);
 898             }
 899         }
 900     }
 901
 902     for(i=0; SUCCEEDED(hres) && i < add_args; i++)
 903         hres = jsdisp_propput_idx(jsthis, start+i, argv[i+2]);
 904
 905     if(SUCCEEDED(hres))
 906         hres = jsdisp_propput_name(jsthis, lengthW, jsval_number(length-delete_cnt+add_args));
 907
 908     if(FAILED(hres)) {
 909         if(ret_array)
 910             jsdisp_release(ret_array);
 911         return hres;
 912     }
 913
 914     if(r)
 915         *r = jsval_obj(ret_array);
 916     return S_OK;
 917 }
 918
 919 /* ECMA-262 3rd Edition    15.4.4.2 */
 920 static HRESULT Array_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
 921         jsval_t *r)
 922 {
 923     ArrayInstance *array;
 924
 925     TRACE("\n");
 926
 927     array = array_this(jsthis);
 928     if(!array)
 929         return throw_type_error(ctx, JS_E_ARRAY_EXPECTED, NULL);
 930
 931     return array_join(ctx, &array->dispex, array->length, default_separatorW, r);
 932 }
 933
 934 static HRESULT Array_toLocaleString(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 935         jsval_t *r)
 936 {
 937     FIXME("\n");
 938     return E_NOTIMPL;
 939 }
 940
 941 /* ECMA-262 3rd Edition    15.4.4.13 */
 942 static HRESULT Array_unshift(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
 943         jsval_t *r)
 944 {
 945     jsdisp_t *jsthis;
 946     WCHAR buf[14], *buf_end, *str;
 947     DWORD i, length;
 948     jsval_t val;
 949     DISPID id;
 950     HRESULT hres;
 951
 952     TRACE("\n");
 953
 954     hres = get_length(ctx, vthis, &jsthis, &length);
 955     if(FAILED(hres))
 956         return hres;
 957
 958     if(argc) {
 959         buf_end = buf + sizeof(buf)/sizeof(WCHAR)-1;
 960         *buf_end-- = 0;
 961         i = length;
 962
 963         while(i--) {
 964             str = idx_to_str(i, buf_end);
 965
 966             hres = jsdisp_get_id(jsthis, str, 0, &id);
 967             if(SUCCEEDED(hres)) {
 968                 hres = jsdisp_propget(jsthis, id, &val);
 969                 if(FAILED(hres))
 970                     return hres;
 971
 972                 hres = jsdisp_propput_idx(jsthis, i+argc, val);
 973                 jsval_release(val);
 974             }else if(hres == DISP_E_UNKNOWNNAME) {
 975                 hres = IDispatchEx_DeleteMemberByDispID(vthis->u.dispex, id);
 976             }
 977         }
 978
 979         if(FAILED(hres))
 980             return hres;
 981     }
 982
 983     for(i=0; i<argc; i++) {
 984         hres = jsdisp_propput_idx(jsthis, i, argv[i]);
 985         if(FAILED(hres))
 986             return hres;
 987     }
 988
 989     if(argc) {
 990         length += argc;
 991         hres = set_length(jsthis, length);
 992         if(FAILED(hres))
 993             return hres;
 994     }
 995
 996     if(r)
 997         *r = ctx->version < 2 ? jsval_undefined() : jsval_number(length);
 998     return S_OK;
 999 }
1000
1001 static HRESULT Array_get_value(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t *r)
1002 {
1003     ArrayInstance *array = array_from_jsdisp(jsthis);
1004
1005     TRACE("\n");
1006
1007     return array_join(ctx, &array->dispex, array->length, default_separatorW, r);
1008 }
1009
1010 static void Array_destructor(jsdisp_t *dispex)
1011 {
1012     heap_free(dispex);
1013 }
1014
1015 static void Array_on_put(jsdisp_t *dispex, const WCHAR *name)
1016 {
1017     ArrayInstance *array = (ArrayInstance*)dispex;
1018     const WCHAR *ptr = name;
1019     DWORD id = 0;
1020
1021     if(!isdigitW(*ptr))
1022         return;
1023
1024     while(*ptr && isdigitW(*ptr)) {
1025         id = id*10 + (*ptr-'0');
1026         ptr++;
1027     }
1028
1029     if(*ptr)
1030         return;
1031
1032     if(id >= array->length)
1033         array->length = id+1;
1034 }
1035
1036 static const builtin_prop_t Array_props[] = {
1037     {concatW,                Array_concat,               PROPF_METHOD|1},
1038     {joinW,                  Array_join,                 PROPF_METHOD|1},
1039     {lengthW,                NULL,0,                     Array_get_length, Array_set_length},
1040     {popW,                   Array_pop,                  PROPF_METHOD},
1041     {pushW,                  Array_push,                 PROPF_METHOD|1},
1042     {reverseW,               Array_reverse,              PROPF_METHOD},
1043     {shiftW,                 Array_shift,                PROPF_METHOD},
1044     {sliceW,                 Array_slice,                PROPF_METHOD|2},
1045     {sortW,                  Array_sort,                 PROPF_METHOD|1},
1046     {spliceW,                Array_splice,               PROPF_METHOD|2},
1047     {toLocaleStringW,        Array_toLocaleString,       PROPF_METHOD},
1048     {toStringW,              Array_toString,             PROPF_METHOD},
1049     {unshiftW,               Array_unshift,              PROPF_METHOD|1},
1050 };
1051
1052 static const builtin_info_t Array_info = {
1053     JSCLASS_ARRAY,
1054     {NULL, NULL,0, Array_get_value},
1055     sizeof(Array_props)/sizeof(*Array_props),
1056     Array_props,
1057     Array_destructor,
1058     Array_on_put
1059 };
1060
1061 static const builtin_prop_t ArrayInst_props[] = {
1062     {lengthW,                NULL,0,                     Array_get_length, Array_set_length}
1063 };
1064
1065 static const builtin_info_t ArrayInst_info = {
1066     JSCLASS_ARRAY,
1067     {NULL, NULL,0, Array_get_value},
1068     sizeof(ArrayInst_props)/sizeof(*ArrayInst_props),
1069     ArrayInst_props,
1070     Array_destructor,
1071     Array_on_put
1072 };
1073
1074 static HRESULT ArrayConstr_value(script_ctx_t *ctx, vdisp_t *vthis, WORD flags, unsigned argc, jsval_t *argv,
1075         jsval_t *r)
1076 {
1077     jsdisp_t *obj;
1078     DWORD i;
1079     HRESULT hres;
1080
1081     TRACE("\n");
1082
1083     switch(flags) {
1084     case DISPATCH_METHOD:
1085     case DISPATCH_CONSTRUCT: {
1086         if(argc == 1 && is_number(argv[0])) {
1087             double n = get_number(argv[0]);
1088
1089             if(n < 0 || !is_int32(n))
1090                 return throw_range_error(ctx, JS_E_INVALID_LENGTH, NULL);
1091
1092             hres = create_array(ctx, n, &obj);
1093             if(FAILED(hres))
1094                 return hres;
1095
1096             *r = jsval_obj(obj);
1097             return S_OK;
1098         }
1099
1100         hres = create_array(ctx, argc, &obj);
1101         if(FAILED(hres))
1102             return hres;
1103
1104         for(i=0; i < argc; i++) {
1105             hres = jsdisp_propput_idx(obj, i, argv[i]);
1106             if(FAILED(hres))
1107                 break;
1108         }
1109         if(FAILED(hres)) {
1110             jsdisp_release(obj);
1111             return hres;
1112         }
1113
1114         *r = jsval_obj(obj);
1115         break;
1116     }
1117     default:
1118         FIXME("unimplemented flags: %x\n", flags);
1119         return E_NOTIMPL;
1120     }
1121
1122     return S_OK;
1123 }
1124
1125 static HRESULT alloc_array(script_ctx_t *ctx, jsdisp_t *object_prototype, ArrayInstance **ret)
1126 {
1127     ArrayInstance *array;
1128     HRESULT hres;
1129
1130     array = heap_alloc_zero(sizeof(ArrayInstance));
1131     if(!array)
1132         return E_OUTOFMEMORY;
1133
1134     if(object_prototype)
1135         hres = init_dispex(&array->dispex, ctx, &Array_info, object_prototype);
1136     else
1137         hres = init_dispex_from_constr(&array->dispex, ctx, &ArrayInst_info, ctx->array_constr);
1138
1139     if(FAILED(hres)) {
1140         heap_free(array);
1141         return hres;
1142     }
1143
1144     *ret = array;
1145     return S_OK;
1146 }
1147
1148 HRESULT create_array_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
1149 {
1150     ArrayInstance *array;
1151     HRESULT hres;
1152
1153     static const WCHAR ArrayW[] = {'A','r','r','a','y',0};
1154
1155     hres = alloc_array(ctx, object_prototype, &array);
1156     if(FAILED(hres))
1157         return hres;
1158
1159     hres = create_builtin_constructor(ctx, ArrayConstr_value, ArrayW, NULL, PROPF_CONSTR|1, &array->dispex, ret);
1160
1161     jsdisp_release(&array->dispex);
1162     return hres;
1163 }
1164
1165 HRESULT create_array(script_ctx_t *ctx, DWORD length, jsdisp_t **ret)
1166 {
1167     ArrayInstance *array;
1168     HRESULT hres;
1169
1170     hres = alloc_array(ctx, NULL, &array);
1171     if(FAILED(hres))
1172         return hres;
1173
1174     array->length = length;
1175
1176     *ret = &array->dispex;
1177     return S_OK;
1178 }