dlls/jscript/jsutils.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 #include "engine.h"
  27
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  31 WINE_DECLARE_DEBUG_CHANNEL(heap);
  32
  33 const char *debugstr_jsval(const jsval_t v)
  34 {
  35     switch(jsval_type(v)) {
  36     case JSV_UNDEFINED:
  37         return "undefined";
  38     case JSV_NULL:
  39         return "null";
  40     case JSV_OBJECT:
  41         return wine_dbg_sprintf("obj(%p)", get_object(v));
  42     case JSV_STRING:
  43         return wine_dbg_sprintf("str(%s)", debugstr_jsstr(get_string(v)));
  44     case JSV_NUMBER:
  45         return wine_dbg_sprintf("%lf", get_number(v));
  46     case JSV_BOOL:
  47         return get_bool(v) ? "true" : "false";
  48     case JSV_VARIANT:
  49         return debugstr_variant(get_variant(v));
  50     }
  51
  52     assert(0);
  53     return NULL;
  54 }
  55
  56 BOOL is_finite(double n)
  57 {
  58     return !isnan(n) && !isinf(n);
  59 }
  60
  61 #define MIN_BLOCK_SIZE  128
  62 #define ARENA_FREE_FILLER  0xaa
  63
  64 static inline DWORD block_size(DWORD block)
  65 {
  66     return MIN_BLOCK_SIZE << block;
  67 }
  68
  69 void heap_pool_init(heap_pool_t *heap)
  70 {
  71     memset(heap, 0, sizeof(*heap));
  72     list_init(&heap->custom_blocks);
  73 }
  74
  75 void *heap_pool_alloc(heap_pool_t *heap, DWORD size)
  76 {
  77     struct list *list;
  78     void *tmp;
  79
  80     if(!heap->block_cnt) {
  81         if(!heap->blocks) {
  82             heap->blocks = heap_alloc(sizeof(void*));
  83             if(!heap->blocks)
  84                 return NULL;
  85         }
  86
  87         tmp = heap_alloc(block_size(0));
  88         if(!tmp)
  89             return NULL;
  90
  91         heap->blocks[0] = tmp;
  92         heap->block_cnt = 1;
  93     }
  94
  95     if(heap->offset + size <= block_size(heap->last_block)) {
  96         tmp = ((BYTE*)heap->blocks[heap->last_block])+heap->offset;
  97         heap->offset += size;
  98         return tmp;
  99     }
 100
 101     if(size <= block_size(heap->last_block+1)) {
 102         if(heap->last_block+1 == heap->block_cnt) {
 103             tmp = heap_realloc(heap->blocks, (heap->block_cnt+1)*sizeof(void*));
 104             if(!tmp)
 105                 return NULL;
 106
 107             heap->blocks = tmp;
 108             heap->blocks[heap->block_cnt] = heap_alloc(block_size(heap->block_cnt));
 109             if(!heap->blocks[heap->block_cnt])
 110                 return NULL;
 111
 112             heap->block_cnt++;
 113         }
 114
 115         heap->last_block++;
 116         heap->offset = size;
 117         return heap->blocks[heap->last_block];
 118     }
 119
 120     list = heap_alloc(size + sizeof(struct list));
 121     if(!list)
 122         return NULL;
 123
 124     list_add_head(&heap->custom_blocks, list);
 125     return list+1;
 126 }
 127
 128 void *heap_pool_grow(heap_pool_t *heap, void *mem, DWORD size, DWORD inc)
 129 {
 130     void *ret;
 131
 132     if(mem == (BYTE*)heap->blocks[heap->last_block] + heap->offset-size
 133        && heap->offset+inc < block_size(heap->last_block)) {
 134         heap->offset += inc;
 135         return mem;
 136     }
 137
 138     ret = heap_pool_alloc(heap, size+inc);
 139     if(ret) /* FIXME: avoid copying for custom blocks */
 140         memcpy(ret, mem, size);
 141     return ret;
 142 }
 143
 144 void heap_pool_clear(heap_pool_t *heap)
 145 {
 146     struct list *tmp;
 147
 148     if(!heap)
 149         return;
 150
 151     while((tmp = list_head(&heap->custom_blocks))) {
 152         list_remove(tmp);
 153         heap_free(tmp);
 154     }
 155
 156     if(WARN_ON(heap)) {
 157         DWORD i;
 158
 159         for(i=0; i < heap->block_cnt; i++)
 160             memset(heap->blocks[i], ARENA_FREE_FILLER, block_size(i));
 161     }
 162
 163     heap->last_block = heap->offset = 0;
 164     heap->mark = FALSE;
 165 }
 166
 167 void heap_pool_free(heap_pool_t *heap)
 168 {
 169     DWORD i;
 170
 171     heap_pool_clear(heap);
 172
 173     for(i=0; i < heap->block_cnt; i++)
 174         heap_free(heap->blocks[i]);
 175     heap_free(heap->blocks);
 176
 177     heap_pool_init(heap);
 178 }
 179
 180 heap_pool_t *heap_pool_mark(heap_pool_t *heap)
 181 {
 182     if(heap->mark)
 183         return NULL;
 184
 185     heap->mark = TRUE;
 186     return heap;
 187 }
 188
 189 void jsval_release(jsval_t val)
 190 {
 191     switch(jsval_type(val)) {
 192     case JSV_OBJECT:
 193         if(get_object(val))
 194             IDispatch_Release(get_object(val));
 195         break;
 196     case JSV_STRING:
 197         jsstr_release(get_string(val));
 198         break;
 199     case JSV_VARIANT:
 200         VariantClear(get_variant(val));
 201         heap_free(get_variant(val));
 202         break;
 203     default:
 204         break;
 205     }
 206 }
 207
 208 static HRESULT jsval_variant(jsval_t *val, VARIANT *var)
 209 {
 210     VARIANT *v;
 211     HRESULT hres;
 212
 213     __JSVAL_TYPE(*val) = JSV_VARIANT;
 214     __JSVAL_VAR(*val) = v = heap_alloc(sizeof(VARIANT));
 215     if(!v) {
 216         *val = jsval_undefined();
 217         return E_OUTOFMEMORY;
 218     }
 219
 220     V_VT(v) = VT_EMPTY;
 221     hres = VariantCopy(v, var);
 222     if(FAILED(hres)) {
 223         *val = jsval_undefined();
 224         heap_free(v);
 225     }
 226     return hres;
 227 }
 228
 229 HRESULT jsval_copy(jsval_t v, jsval_t *r)
 230 {
 231     switch(jsval_type(v)) {
 232     case JSV_UNDEFINED:
 233     case JSV_NULL:
 234     case JSV_NUMBER:
 235     case JSV_BOOL:
 236         *r = v;
 237         return S_OK;
 238     case JSV_OBJECT:
 239         if(get_object(v))
 240             IDispatch_AddRef(get_object(v));
 241         *r = v;
 242         return S_OK;
 243     case JSV_STRING: {
 244         jsstr_addref(get_string(v));
 245         *r = v;
 246         return S_OK;
 247     }
 248     case JSV_VARIANT:
 249         return jsval_variant(r, get_variant(v));
 250     }
 251
 252     assert(0);
 253     return E_FAIL;
 254 }
 255
 256 HRESULT variant_to_jsval(VARIANT *var, jsval_t *r)
 257 {
 258     if(V_VT(var) == (VT_VARIANT|VT_BYREF))
 259         var = V_VARIANTREF(var);
 260
 261     switch(V_VT(var)) {
 262     case VT_EMPTY:
 263         *r = jsval_undefined();
 264         return S_OK;
 265     case VT_NULL:
 266         *r = jsval_null();
 267         return S_OK;
 268     case VT_BOOL:
 269         *r = jsval_bool(V_BOOL(var));
 270         return S_OK;
 271     case VT_I4:
 272         *r = jsval_number(V_I4(var));
 273         return S_OK;
 274     case VT_R8:
 275         *r = jsval_number(V_R8(var));
 276         return S_OK;
 277     case VT_BSTR: {
 278         jsstr_t *str;
 279
 280         if(V_BSTR(var)) {
 281             str = jsstr_alloc_len(V_BSTR(var), SysStringLen(V_BSTR(var)));
 282             if(!str)
 283                 return E_OUTOFMEMORY;
 284         }else {
 285             str = jsstr_null_bstr();
 286         }
 287
 288         *r = jsval_string(str);
 289         return S_OK;
 290     }
 291     case VT_DISPATCH: {
 292         if(V_DISPATCH(var))
 293             IDispatch_AddRef(V_DISPATCH(var));
 294         *r = jsval_disp(V_DISPATCH(var));
 295         return S_OK;
 296     }
 297     case VT_I2:
 298         *r = jsval_number(V_I2(var));
 299         return S_OK;
 300     case VT_INT:
 301         *r = jsval_number(V_INT(var));
 302         return S_OK;
 303     case VT_UI4:
 304         *r = jsval_number(V_UI4(var));
 305         return S_OK;
 306     case VT_R4:
 307         *r = jsval_number(V_R4(var));
 308         return S_OK;
 309     case VT_UNKNOWN:
 310         if(V_UNKNOWN(var)) {
 311             IDispatch *disp;
 312             HRESULT hres;
 313
 314             hres = IUnknown_QueryInterface(V_UNKNOWN(var), &IID_IDispatch, (void**)&disp);
 315             if(SUCCEEDED(hres)) {
 316                 *r = jsval_disp(disp);
 317                 return S_OK;
 318             }
 319         }else {
 320             *r = jsval_disp(NULL);
 321             return S_OK;
 322         }
 323         /* fall through */
 324     default:
 325         return jsval_variant(r, var);
 326     }
 327 }
 328
 329 HRESULT jsval_to_variant(jsval_t val, VARIANT *retv)
 330 {
 331     switch(jsval_type(val)) {
 332     case JSV_UNDEFINED:
 333         V_VT(retv) = VT_EMPTY;
 334         return S_OK;
 335     case JSV_NULL:
 336         V_VT(retv) = VT_NULL;
 337         return S_OK;
 338     case JSV_OBJECT:
 339         V_VT(retv) = VT_DISPATCH;
 340         if(get_object(val))
 341             IDispatch_AddRef(get_object(val));
 342         V_DISPATCH(retv) = get_object(val);
 343         return S_OK;
 344     case JSV_STRING: {
 345         jsstr_t *str = get_string(val);
 346
 347         V_VT(retv) = VT_BSTR;
 348         if(is_null_bstr(str)) {
 349             V_BSTR(retv) = NULL;
 350         }else {
 351             V_BSTR(retv) = SysAllocStringLen(NULL, jsstr_length(str));
 352             if(V_BSTR(retv))
 353                 jsstr_flush(str, V_BSTR(retv));
 354             else
 355                 return E_OUTOFMEMORY;
 356         }
 357         return S_OK;
 358     }
 359     case JSV_NUMBER: {
 360         double n = get_number(val);
 361
 362         if(is_int32(n)) {
 363             V_VT(retv) = VT_I4;
 364             V_I4(retv) = n;
 365         }else {
 366             V_VT(retv) = VT_R8;
 367             V_R8(retv) = n;
 368         }
 369
 370         return S_OK;
 371     }
 372     case JSV_BOOL:
 373         V_VT(retv) = VT_BOOL;
 374         V_BOOL(retv) = get_bool(val) ? VARIANT_TRUE : VARIANT_FALSE;
 375         return S_OK;
 376     case JSV_VARIANT:
 377         V_VT(retv) = VT_EMPTY;
 378         return VariantCopy(retv, get_variant(val));
 379     }
 380
 381     assert(0);
 382     return E_FAIL;
 383 }
 384
 385 /* ECMA-262 3rd Edition    9.1 */
 386 HRESULT to_primitive(script_ctx_t *ctx, jsval_t val, jsval_t *ret, hint_t hint)
 387 {
 388     if(is_object_instance(val)) {
 389         jsdisp_t *jsdisp;
 390         jsval_t prim;
 391         DISPID id;
 392         HRESULT hres;
 393
 394         static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
 395         static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
 396
 397         if(!get_object(val)) {
 398             *ret = jsval_null();
 399             return S_OK;
 400         }
 401
 402         jsdisp = iface_to_jsdisp(get_object(val));
 403         if(!jsdisp)
 404             return disp_propget(ctx, get_object(val), DISPID_VALUE, ret);
 405
 406         if(hint == NO_HINT)
 407             hint = is_class(jsdisp, JSCLASS_DATE) ? HINT_STRING : HINT_NUMBER;
 408
 409         /* Native implementation doesn't throw TypeErrors, returns strange values */
 410
 411         hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? toStringW : valueOfW, 0, &id);
 412         if(SUCCEEDED(hres)) {
 413             hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, 0, NULL, &prim);
 414             if(FAILED(hres)) {
 415                 WARN("call error - forwarding exception\n");
 416                 jsdisp_release(jsdisp);
 417                 return hres;
 418             }else if(!is_object_instance(prim)) {
 419                 jsdisp_release(jsdisp);
 420                 *ret = prim;
 421                 return S_OK;
 422             }else {
 423                 IDispatch_Release(get_object(prim));
 424             }
 425         }
 426
 427         hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? valueOfW : toStringW, 0, &id);
 428         if(SUCCEEDED(hres)) {
 429             hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, 0, NULL, &prim);
 430             if(FAILED(hres)) {
 431                 WARN("call error - forwarding exception\n");
 432                 jsdisp_release(jsdisp);
 433                 return hres;
 434             }else if(!is_object_instance(prim)) {
 435                 jsdisp_release(jsdisp);
 436                 *ret = prim;
 437                 return S_OK;
 438             }else {
 439                 IDispatch_Release(get_object(prim));
 440             }
 441         }
 442
 443         jsdisp_release(jsdisp);
 444
 445         WARN("failed\n");
 446         return throw_type_error(ctx, JS_E_TO_PRIMITIVE, NULL);
 447     }
 448
 449     return jsval_copy(val, ret);
 450
 451 }
 452
 453 /* ECMA-262 3rd Edition    9.2 */
 454 HRESULT to_boolean(jsval_t val, BOOL *ret)
 455 {
 456     switch(jsval_type(val)) {
 457     case JSV_UNDEFINED:
 458     case JSV_NULL:
 459         *ret = FALSE;
 460         return S_OK;
 461     case JSV_OBJECT:
 462         *ret = get_object(val) != NULL;
 463         return S_OK;
 464     case JSV_STRING:
 465         *ret = jsstr_length(get_string(val)) != 0;
 466         return S_OK;
 467     case JSV_NUMBER:
 468         *ret = !isnan(get_number(val)) && get_number(val);
 469         return S_OK;
 470     case JSV_BOOL:
 471         *ret = get_bool(val);
 472         return S_OK;
 473     case JSV_VARIANT:
 474         FIXME("unimplemented for variant %s\n", debugstr_variant(get_variant(val)));
 475         return E_NOTIMPL;
 476     }
 477
 478     assert(0);
 479     return E_FAIL;
 480 }
 481
 482 static int hex_to_int(WCHAR c)
 483 {
 484     if('0' <= c && c <= '9')
 485         return c-'0';
 486
 487     if('a' <= c && c <= 'f')
 488         return c-'a'+10;
 489
 490     if('A' <= c && c <= 'F')
 491         return c-'A'+10;
 492
 493     return -1;
 494 }
 495
 496 /* ECMA-262 3rd Edition    9.3.1 */
 497 static HRESULT str_to_number(jsstr_t *str, double *ret)
 498 {
 499     const WCHAR *ptr;
 500     BOOL neg = FALSE;
 501     DOUBLE d = 0.0;
 502
 503     static const WCHAR infinityW[] = {'I','n','f','i','n','i','t','y'};
 504
 505     ptr = jsstr_flatten(str);
 506     if(!ptr)
 507         return E_OUTOFMEMORY;
 508
 509     while(isspaceW(*ptr))
 510         ptr++;
 511
 512     if(*ptr == '-') {
 513         neg = TRUE;
 514         ptr++;
 515     }else if(*ptr == '+') {
 516         ptr++;
 517     }
 518
 519     if(!strncmpW(ptr, infinityW, sizeof(infinityW)/sizeof(WCHAR))) {
 520         ptr += sizeof(infinityW)/sizeof(WCHAR);
 521         while(*ptr && isspaceW(*ptr))
 522             ptr++;
 523
 524         if(*ptr)
 525             *ret = NAN;
 526         else
 527             *ret = neg ? -INFINITY : INFINITY;
 528         return S_OK;
 529     }
 530
 531     if(*ptr == '0' && ptr[1] == 'x') {
 532         DWORD l = 0;
 533
 534         ptr += 2;
 535         while((l = hex_to_int(*ptr)) != -1) {
 536             d = d*16 + l;
 537             ptr++;
 538         }
 539
 540         *ret = d;
 541         return S_OK;
 542     }
 543
 544     while(isdigitW(*ptr))
 545         d = d*10 + (*ptr++ - '0');
 546
 547     if(*ptr == 'e' || *ptr == 'E') {
 548         BOOL eneg = FALSE;
 549         LONG l = 0;
 550
 551         ptr++;
 552         if(*ptr == '-') {
 553             ptr++;
 554             eneg = TRUE;
 555         }else if(*ptr == '+') {
 556             ptr++;
 557         }
 558
 559         while(isdigitW(*ptr))
 560             l = l*10 + (*ptr++ - '0');
 561         if(eneg)
 562             l = -l;
 563
 564         d *= pow(10, l);
 565     }else if(*ptr == '.') {
 566         DOUBLE dec = 0.1;
 567
 568         ptr++;
 569         while(isdigitW(*ptr)) {
 570             d += dec * (*ptr++ - '0');
 571             dec *= 0.1;
 572         }
 573     }
 574
 575     while(isspaceW(*ptr))
 576         ptr++;
 577
 578     if(*ptr) {
 579         *ret = NAN;
 580         return S_OK;
 581     }
 582
 583     if(neg)
 584         d = -d;
 585
 586     *ret = d;
 587     return S_OK;
 588 }
 589
 590 /* ECMA-262 3rd Edition    9.3 */
 591 HRESULT to_number(script_ctx_t *ctx, jsval_t val, double *ret)
 592 {
 593     switch(jsval_type(val)) {
 594     case JSV_UNDEFINED:
 595         *ret = NAN;
 596         return S_OK;
 597     case JSV_NULL:
 598         *ret = 0;
 599         return S_OK;
 600     case JSV_NUMBER:
 601         *ret = get_number(val);
 602         return S_OK;
 603     case JSV_STRING:
 604         return str_to_number(get_string(val), ret);
 605     case JSV_OBJECT: {
 606         jsval_t prim;
 607         HRESULT hres;
 608
 609         hres = to_primitive(ctx, val, &prim, HINT_NUMBER);
 610         if(FAILED(hres))
 611             return hres;
 612
 613         hres = to_number(ctx, prim, ret);
 614         jsval_release(prim);
 615         return hres;
 616     }
 617     case JSV_BOOL:
 618         *ret = get_bool(val) ? 1 : 0;
 619         return S_OK;
 620     case JSV_VARIANT:
 621         FIXME("unimplemented for variant %s\n", debugstr_variant(get_variant(val)));
 622         return E_NOTIMPL;
 623     };
 624
 625     assert(0);
 626     return E_FAIL;
 627 }
 628
 629 /* ECMA-262 3rd Edition    9.4 */
 630 HRESULT to_integer(script_ctx_t *ctx, jsval_t v, double *ret)
 631 {
 632     double n;
 633     HRESULT hres;
 634
 635     hres = to_number(ctx, v, &n);
 636     if(FAILED(hres))
 637         return hres;
 638
 639     if(isnan(n))
 640         *ret = 0;
 641     else
 642         *ret = n >= 0.0 ? floor(n) : -floor(-n);
 643     return S_OK;
 644 }
 645
 646 /* ECMA-262 3rd Edition    9.5 */
 647 HRESULT to_int32(script_ctx_t *ctx, jsval_t v, INT *ret)
 648 {
 649     double n;
 650     HRESULT hres;
 651
 652     hres = to_number(ctx, v, &n);
 653     if(FAILED(hres))
 654         return hres;
 655
 656     *ret = is_finite(n) ? n : 0;
 657     return S_OK;
 658 }
 659
 660 /* ECMA-262 3rd Edition    9.6 */
 661 HRESULT to_uint32(script_ctx_t *ctx, jsval_t val, DWORD *ret)
 662 {
 663     INT32 n;
 664     HRESULT hres;
 665
 666     hres = to_int32(ctx, val, &n);
 667     if(SUCCEEDED(hres))
 668         *ret = n;
 669     return hres;
 670 }
 671
 672 static jsstr_t *int_to_string(int i)
 673 {
 674     WCHAR buf[12], *p;
 675     BOOL neg = FALSE;
 676
 677     if(!i) {
 678         static const WCHAR zeroW[] = {'0',0};
 679         return jsstr_alloc(zeroW);
 680     }
 681
 682     if(i < 0) {
 683         neg = TRUE;
 684         i = -i;
 685     }
 686
 687     p = buf + sizeof(buf)/sizeof(*buf)-1;
 688     *p-- = 0;
 689     while(i) {
 690         *p-- = i%10 + '0';
 691         i /= 10;
 692     }
 693
 694     if(neg)
 695         *p = '-';
 696     else
 697         p++;
 698
 699     return jsstr_alloc(p);
 700 }
 701
 702 HRESULT double_to_string(double n, jsstr_t **str)
 703 {
 704     const WCHAR InfinityW[] = {'-','I','n','f','i','n','i','t','y',0};
 705
 706     if(isnan(n)) {
 707         *str = jsstr_nan();
 708     }else if(isinf(n)) {
 709         *str = jsstr_alloc(n<0 ? InfinityW : InfinityW+1);
 710     }else if(is_int32(n)) {
 711         *str = int_to_string(n);
 712     }else {
 713         VARIANT strv, v;
 714         HRESULT hres;
 715
 716         /* FIXME: Don't use VariantChangeTypeEx */
 717         V_VT(&v) = VT_R8;
 718         V_R8(&v) = n;
 719         V_VT(&strv) = VT_EMPTY;
 720         hres = VariantChangeTypeEx(&strv, &v, MAKELCID(MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),SORT_DEFAULT), 0, VT_BSTR);
 721         if(FAILED(hres))
 722             return hres;
 723
 724         *str = jsstr_alloc(V_BSTR(&strv));
 725         SysFreeString(V_BSTR(&strv));
 726     }
 727
 728     return *str ? S_OK : E_OUTOFMEMORY;
 729 }
 730
 731 /* ECMA-262 3rd Edition    9.8 */
 732 HRESULT to_string(script_ctx_t *ctx, jsval_t val, jsstr_t **str)
 733 {
 734     const WCHAR nullW[] = {'n','u','l','l',0};
 735     const WCHAR trueW[] = {'t','r','u','e',0};
 736     const WCHAR falseW[] = {'f','a','l','s','e',0};
 737
 738     switch(jsval_type(val)) {
 739     case JSV_UNDEFINED:
 740         *str = jsstr_undefined();
 741         return S_OK;
 742     case JSV_NULL:
 743         *str = jsstr_alloc(nullW);
 744         break;
 745     case JSV_NUMBER:
 746         return double_to_string(get_number(val), str);
 747     case JSV_STRING:
 748         *str = jsstr_addref(get_string(val));
 749         break;
 750     case JSV_OBJECT: {
 751         jsval_t prim;
 752         HRESULT hres;
 753
 754         hres = to_primitive(ctx, val, &prim, HINT_STRING);
 755         if(FAILED(hres))
 756             return hres;
 757
 758         hres = to_string(ctx, prim, str);
 759         jsval_release(prim);
 760         return hres;
 761     }
 762     case JSV_BOOL:
 763         *str = jsstr_alloc(get_bool(val) ? trueW : falseW);
 764         break;
 765     default:
 766         FIXME("unsupported %s\n", debugstr_jsval(val));
 767         return E_NOTIMPL;
 768     }
 769
 770     return *str ? S_OK : E_OUTOFMEMORY;
 771 }
 772
 773 HRESULT to_flat_string(script_ctx_t *ctx, jsval_t val, jsstr_t **str, const WCHAR **ret_str)
 774 {
 775     HRESULT hres;
 776
 777     hres = to_string(ctx, val, str);
 778     if(FAILED(hres))
 779         return hres;
 780
 781     *ret_str = jsstr_flatten(*str);
 782     if(!*ret_str) {
 783         jsstr_release(*str);
 784         return E_OUTOFMEMORY;
 785     }
 786
 787     return S_OK;
 788 }
 789
 790 /* ECMA-262 3rd Edition    9.9 */
 791 HRESULT to_object(script_ctx_t *ctx, jsval_t val, IDispatch **disp)
 792 {
 793     jsdisp_t *dispex;
 794     HRESULT hres;
 795
 796     switch(jsval_type(val)) {
 797     case JSV_STRING:
 798         hres = create_string(ctx, get_string(val), &dispex);
 799         if(FAILED(hres))
 800             return hres;
 801
 802         *disp = to_disp(dispex);
 803         break;
 804     case JSV_NUMBER:
 805         hres = create_number(ctx, get_number(val), &dispex);
 806         if(FAILED(hres))
 807             return hres;
 808
 809         *disp = to_disp(dispex);
 810         break;
 811     case JSV_OBJECT:
 812         if(get_object(val)) {
 813             *disp = get_object(val);
 814             IDispatch_AddRef(*disp);
 815         }else {
 816             jsdisp_t *obj;
 817
 818             hres = create_object(ctx, NULL, &obj);
 819             if(FAILED(hres))
 820                 return hres;
 821
 822             *disp = to_disp(obj);
 823         }
 824         break;
 825     case JSV_BOOL:
 826         hres = create_bool(ctx, get_bool(val), &dispex);
 827         if(FAILED(hres))
 828             return hres;
 829
 830         *disp = to_disp(dispex);
 831         break;
 832     case JSV_UNDEFINED:
 833     case JSV_NULL:
 834         WARN("object expected\n");
 835         return throw_type_error(ctx, JS_E_OBJECT_EXPECTED, NULL);
 836     case JSV_VARIANT:
 837         switch(V_VT(get_variant(val))) {
 838         case VT_ARRAY|VT_VARIANT:
 839             hres = create_vbarray(ctx, V_ARRAY(get_variant(val)), &dispex);
 840             if(FAILED(hres))
 841                 return hres;
 842
 843             *disp = to_disp(dispex);
 844             break;
 845
 846         default:
 847             FIXME("Unsupported %s\n", debugstr_variant(get_variant(val)));
 848             return E_NOTIMPL;
 849         }
 850         break;
 851     }
 852
 853     return S_OK;
 854 }
 855
 856 HRESULT variant_change_type(script_ctx_t *ctx, VARIANT *dst, VARIANT *src, VARTYPE vt)
 857 {
 858     jsval_t val;
 859     HRESULT hres;
 860
 861     clear_ei(ctx);
 862     hres = variant_to_jsval(src, &val);
 863     if(FAILED(hres))
 864         return hres;
 865
 866     switch(vt) {
 867     case VT_I2:
 868     case VT_I4: {
 869         INT i;
 870
 871         hres = to_int32(ctx, val, &i);
 872         if(SUCCEEDED(hres)) {
 873             if(vt == VT_I4)
 874                 V_I4(dst) = i;
 875             else
 876                 V_I2(dst) = i;
 877         }
 878         break;
 879     }
 880     case VT_R8: {
 881         double n;
 882         hres = to_number(ctx, val, &n);
 883         if(SUCCEEDED(hres))
 884             V_R8(dst) = n;
 885         break;
 886     }
 887     case VT_R4: {
 888         double n;
 889
 890         hres = to_number(ctx, val, &n);
 891         if(SUCCEEDED(hres))
 892             V_R4(dst) = n;
 893         break;
 894     }
 895     case VT_BOOL: {
 896         BOOL b;
 897
 898         hres = to_boolean(val, &b);
 899         if(SUCCEEDED(hres))
 900             V_BOOL(dst) = b ? VARIANT_TRUE : VARIANT_FALSE;
 901         break;
 902     }
 903     case VT_BSTR: {
 904         jsstr_t *str;
 905
 906         hres = to_string(ctx, val, &str);
 907         if(FAILED(hres))
 908             break;
 909
 910         if(is_null_bstr(str)) {
 911             V_BSTR(dst) = NULL;
 912             break;
 913         }
 914
 915         V_BSTR(dst) = SysAllocStringLen(NULL, jsstr_length(str));
 916         if(V_BSTR(dst))
 917             jsstr_flush(str, V_BSTR(dst));
 918         else
 919             hres = E_OUTOFMEMORY;
 920         break;
 921     }
 922     case VT_EMPTY:
 923         hres = V_VT(src) == VT_EMPTY ? S_OK : E_NOTIMPL;
 924         break;
 925     case VT_NULL:
 926         hres = V_VT(src) == VT_NULL ? S_OK : E_NOTIMPL;
 927         break;
 928     default:
 929         FIXME("vt %d not implemented\n", vt);
 930         hres = E_NOTIMPL;
 931     }
 932
 933     jsval_release(val);
 934     if(FAILED(hres))
 935         return hres;
 936
 937     V_VT(dst) = vt;
 938     return S_OK;
 939 }
 940
 941 static inline JSCaller *impl_from_IServiceProvider(IServiceProvider *iface)
 942 {
 943     return CONTAINING_RECORD(iface, JSCaller, IServiceProvider_iface);
 944 }
 945
 946 static HRESULT WINAPI JSCaller_QueryInterface(IServiceProvider *iface, REFIID riid, void **ppv)
 947 {
 948     JSCaller *This = impl_from_IServiceProvider(iface);
 949
 950     if(IsEqualGUID(&IID_IUnknown, riid)) {
 951         TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
 952         *ppv = &This->IServiceProvider_iface;
 953     }else if(IsEqualGUID(&IID_IServiceProvider, riid)) {
 954         TRACE("(%p)->(IID_IServiceProvider %p)\n", This, ppv);
 955         *ppv = &This->IServiceProvider_iface;
 956     }else {
 957         WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
 958         *ppv = NULL;
 959         return E_NOINTERFACE;
 960     }
 961
 962     IUnknown_AddRef((IUnknown*)*ppv);
 963     return S_OK;
 964 }
 965
 966 static ULONG WINAPI JSCaller_AddRef(IServiceProvider *iface)
 967 {
 968     JSCaller *This = impl_from_IServiceProvider(iface);
 969     LONG ref = InterlockedIncrement(&This->ref);
 970
 971     TRACE("(%p) ref=%d\n", This, ref);
 972
 973     return ref;
 974 }
 975
 976 static ULONG WINAPI JSCaller_Release(IServiceProvider *iface)
 977 {
 978     JSCaller *This = impl_from_IServiceProvider(iface);
 979     LONG ref = InterlockedIncrement(&This->ref);
 980
 981     TRACE("(%p) ref=%d\n", This, ref);
 982
 983     if(!ref) {
 984         assert(!This->ctx);
 985         heap_free(This);
 986     }
 987
 988     return ref;
 989 }
 990
 991 static HRESULT WINAPI JSCaller_QueryService(IServiceProvider *iface, REFGUID guidService,
 992         REFIID riid, void **ppv)
 993 {
 994     JSCaller *This = impl_from_IServiceProvider(iface);
 995
 996     if(IsEqualGUID(guidService, &SID_VariantConversion) && This->ctx && This->ctx->active_script) {
 997         TRACE("(%p)->(SID_VariantConversion)\n", This);
 998         return IActiveScript_QueryInterface(This->ctx->active_script, riid, ppv);
 999     }
1000
1001     FIXME("(%p)->(%s %s %p)\n", This, debugstr_guid(guidService), debugstr_guid(riid), ppv);
1002
1003     *ppv = NULL;
1004     return E_NOINTERFACE;
1005 }
1006
1007 static const IServiceProviderVtbl ServiceProviderVtbl = {
1008     JSCaller_QueryInterface,
1009     JSCaller_AddRef,
1010     JSCaller_Release,
1011     JSCaller_QueryService
1012 };
1013
1014 HRESULT create_jscaller(script_ctx_t *ctx)
1015 {
1016     JSCaller *ret;
1017
1018     ret = heap_alloc(sizeof(*ret));
1019     if(!ret)
1020         return E_OUTOFMEMORY;
1021
1022     ret->IServiceProvider_iface.lpVtbl = &ServiceProviderVtbl;
1023     ret->ref = 1;
1024     ret->ctx = ctx;
1025
1026     ctx->jscaller = ret;
1027     return S_OK;
1028 }