20b30f0d710520285ed5a6fdfc20d79992428b89
[reactos.git] / dll / win32 / 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 "jscript.h"
20
21 WINE_DECLARE_DEBUG_CHANNEL(heap);
22
23 const char *debugstr_jsval(const jsval_t v)
24 {
25 switch(jsval_type(v)) {
26 case JSV_UNDEFINED:
27 return "undefined";
28 case JSV_NULL:
29 return "null";
30 case JSV_OBJECT:
31 return wine_dbg_sprintf("obj(%p)", get_object(v));
32 case JSV_STRING:
33 return wine_dbg_sprintf("str(%s)", debugstr_jsstr(get_string(v)));
34 case JSV_NUMBER:
35 return wine_dbg_sprintf("%lf", get_number(v));
36 case JSV_BOOL:
37 return get_bool(v) ? "true" : "false";
38 case JSV_VARIANT:
39 return debugstr_variant(get_variant(v));
40 }
41
42 assert(0);
43 return NULL;
44 }
45
46 BOOL is_finite(double n)
47 {
48 return !isnan(n) && !isinf(n);
49 }
50
51 #define MIN_BLOCK_SIZE 128
52 #define ARENA_FREE_FILLER 0xaa
53
54 static inline DWORD block_size(DWORD block)
55 {
56 return MIN_BLOCK_SIZE << block;
57 }
58
59 void heap_pool_init(heap_pool_t *heap)
60 {
61 memset(heap, 0, sizeof(*heap));
62 list_init(&heap->custom_blocks);
63 }
64
65 void *heap_pool_alloc(heap_pool_t *heap, DWORD size)
66 {
67 struct list *list;
68 void *tmp;
69
70 if(!heap->block_cnt) {
71 if(!heap->blocks) {
72 heap->blocks = heap_alloc(sizeof(void*));
73 if(!heap->blocks)
74 return NULL;
75 }
76
77 tmp = heap_alloc(block_size(0));
78 if(!tmp)
79 return NULL;
80
81 heap->blocks[0] = tmp;
82 heap->block_cnt = 1;
83 }
84
85 if(heap->offset + size <= block_size(heap->last_block)) {
86 tmp = ((BYTE*)heap->blocks[heap->last_block])+heap->offset;
87 heap->offset += size;
88 return tmp;
89 }
90
91 if(size <= block_size(heap->last_block+1)) {
92 if(heap->last_block+1 == heap->block_cnt) {
93 tmp = heap_realloc(heap->blocks, (heap->block_cnt+1)*sizeof(void*));
94 if(!tmp)
95 return NULL;
96
97 heap->blocks = tmp;
98 heap->blocks[heap->block_cnt] = heap_alloc(block_size(heap->block_cnt));
99 if(!heap->blocks[heap->block_cnt])
100 return NULL;
101
102 heap->block_cnt++;
103 }
104
105 heap->last_block++;
106 heap->offset = size;
107 return heap->blocks[heap->last_block];
108 }
109
110 list = heap_alloc(size + sizeof(struct list));
111 if(!list)
112 return NULL;
113
114 list_add_head(&heap->custom_blocks, list);
115 return list+1;
116 }
117
118 void *heap_pool_grow(heap_pool_t *heap, void *mem, DWORD size, DWORD inc)
119 {
120 void *ret;
121
122 if(mem == (BYTE*)heap->blocks[heap->last_block] + heap->offset-size
123 && heap->offset+inc < block_size(heap->last_block)) {
124 heap->offset += inc;
125 return mem;
126 }
127
128 ret = heap_pool_alloc(heap, size+inc);
129 if(ret) /* FIXME: avoid copying for custom blocks */
130 memcpy(ret, mem, size);
131 return ret;
132 }
133
134 void heap_pool_clear(heap_pool_t *heap)
135 {
136 struct list *tmp;
137
138 if(!heap)
139 return;
140
141 while((tmp = list_head(&heap->custom_blocks))) {
142 list_remove(tmp);
143 heap_free(tmp);
144 }
145
146 if(WARN_ON(heap)) {
147 DWORD i;
148
149 for(i=0; i < heap->block_cnt; i++)
150 memset(heap->blocks[i], ARENA_FREE_FILLER, block_size(i));
151 }
152
153 heap->last_block = heap->offset = 0;
154 heap->mark = FALSE;
155 }
156
157 void heap_pool_free(heap_pool_t *heap)
158 {
159 DWORD i;
160
161 heap_pool_clear(heap);
162
163 for(i=0; i < heap->block_cnt; i++)
164 heap_free(heap->blocks[i]);
165 heap_free(heap->blocks);
166
167 heap_pool_init(heap);
168 }
169
170 heap_pool_t *heap_pool_mark(heap_pool_t *heap)
171 {
172 if(heap->mark)
173 return NULL;
174
175 heap->mark = TRUE;
176 return heap;
177 }
178
179 void jsval_release(jsval_t val)
180 {
181 switch(jsval_type(val)) {
182 case JSV_OBJECT:
183 if(get_object(val))
184 IDispatch_Release(get_object(val));
185 break;
186 case JSV_STRING:
187 jsstr_release(get_string(val));
188 break;
189 case JSV_VARIANT:
190 VariantClear(get_variant(val));
191 heap_free(get_variant(val));
192 break;
193 default:
194 break;
195 }
196 }
197
198 static HRESULT jsval_variant(jsval_t *val, VARIANT *var)
199 {
200 VARIANT *v;
201 HRESULT hres;
202
203 __JSVAL_TYPE(*val) = JSV_VARIANT;
204 __JSVAL_VAR(*val) = v = heap_alloc(sizeof(VARIANT));
205 if(!v) {
206 *val = jsval_undefined();
207 return E_OUTOFMEMORY;
208 }
209
210 V_VT(v) = VT_EMPTY;
211 hres = VariantCopy(v, var);
212 if(FAILED(hres)) {
213 *val = jsval_undefined();
214 heap_free(v);
215 }
216 return hres;
217 }
218
219 HRESULT jsval_copy(jsval_t v, jsval_t *r)
220 {
221 switch(jsval_type(v)) {
222 case JSV_UNDEFINED:
223 case JSV_NULL:
224 case JSV_NUMBER:
225 case JSV_BOOL:
226 *r = v;
227 return S_OK;
228 case JSV_OBJECT:
229 if(get_object(v))
230 IDispatch_AddRef(get_object(v));
231 *r = v;
232 return S_OK;
233 case JSV_STRING: {
234 jsstr_addref(get_string(v));
235 *r = v;
236 return S_OK;
237 }
238 case JSV_VARIANT:
239 return jsval_variant(r, get_variant(v));
240 }
241
242 assert(0);
243 return E_FAIL;
244 }
245
246 HRESULT variant_to_jsval(VARIANT *var, jsval_t *r)
247 {
248 if(V_VT(var) == (VT_VARIANT|VT_BYREF))
249 var = V_VARIANTREF(var);
250
251 switch(V_VT(var)) {
252 case VT_EMPTY:
253 *r = jsval_undefined();
254 return S_OK;
255 case VT_NULL:
256 *r = jsval_null();
257 return S_OK;
258 case VT_BOOL:
259 *r = jsval_bool(V_BOOL(var));
260 return S_OK;
261 case VT_I4:
262 *r = jsval_number(V_I4(var));
263 return S_OK;
264 case VT_R8:
265 *r = jsval_number(V_R8(var));
266 return S_OK;
267 case VT_BSTR: {
268 jsstr_t *str;
269
270 if(V_BSTR(var)) {
271 str = jsstr_alloc_len(V_BSTR(var), SysStringLen(V_BSTR(var)));
272 if(!str)
273 return E_OUTOFMEMORY;
274 }else {
275 str = jsstr_null_bstr();
276 }
277
278 *r = jsval_string(str);
279 return S_OK;
280 }
281 case VT_DISPATCH: {
282 if(V_DISPATCH(var))
283 IDispatch_AddRef(V_DISPATCH(var));
284 *r = jsval_disp(V_DISPATCH(var));
285 return S_OK;
286 }
287 case VT_I2:
288 *r = jsval_number(V_I2(var));
289 return S_OK;
290 case VT_INT:
291 *r = jsval_number(V_INT(var));
292 return S_OK;
293 case VT_UI4:
294 *r = jsval_number(V_UI4(var));
295 return S_OK;
296 case VT_R4:
297 *r = jsval_number(V_R4(var));
298 return S_OK;
299 case VT_UNKNOWN:
300 if(V_UNKNOWN(var)) {
301 IDispatch *disp;
302 HRESULT hres;
303
304 hres = IUnknown_QueryInterface(V_UNKNOWN(var), &IID_IDispatch, (void**)&disp);
305 if(SUCCEEDED(hres)) {
306 *r = jsval_disp(disp);
307 return S_OK;
308 }
309 }else {
310 *r = jsval_disp(NULL);
311 return S_OK;
312 }
313 /* fall through */
314 default:
315 return jsval_variant(r, var);
316 }
317 }
318
319 HRESULT jsval_to_variant(jsval_t val, VARIANT *retv)
320 {
321 switch(jsval_type(val)) {
322 case JSV_UNDEFINED:
323 V_VT(retv) = VT_EMPTY;
324 return S_OK;
325 case JSV_NULL:
326 V_VT(retv) = VT_NULL;
327 return S_OK;
328 case JSV_OBJECT:
329 V_VT(retv) = VT_DISPATCH;
330 if(get_object(val))
331 IDispatch_AddRef(get_object(val));
332 V_DISPATCH(retv) = get_object(val);
333 return S_OK;
334 case JSV_STRING: {
335 jsstr_t *str = get_string(val);
336
337 V_VT(retv) = VT_BSTR;
338 if(is_null_bstr(str)) {
339 V_BSTR(retv) = NULL;
340 }else {
341 V_BSTR(retv) = SysAllocStringLen(NULL, jsstr_length(str));
342 if(V_BSTR(retv))
343 jsstr_flush(str, V_BSTR(retv));
344 else
345 return E_OUTOFMEMORY;
346 }
347 return S_OK;
348 }
349 case JSV_NUMBER: {
350 double n = get_number(val);
351
352 if(is_int32(n)) {
353 V_VT(retv) = VT_I4;
354 V_I4(retv) = n;
355 }else {
356 V_VT(retv) = VT_R8;
357 V_R8(retv) = n;
358 }
359
360 return S_OK;
361 }
362 case JSV_BOOL:
363 V_VT(retv) = VT_BOOL;
364 V_BOOL(retv) = get_bool(val) ? VARIANT_TRUE : VARIANT_FALSE;
365 return S_OK;
366 case JSV_VARIANT:
367 V_VT(retv) = VT_EMPTY;
368 return VariantCopy(retv, get_variant(val));
369 }
370
371 assert(0);
372 return E_FAIL;
373 }
374
375 /* ECMA-262 3rd Edition 9.1 */
376 HRESULT to_primitive(script_ctx_t *ctx, jsval_t val, jsval_t *ret, hint_t hint)
377 {
378 if(is_object_instance(val)) {
379 jsdisp_t *jsdisp;
380 jsval_t prim;
381 DISPID id;
382 HRESULT hres;
383
384 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
385 static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
386
387 if(!get_object(val)) {
388 *ret = jsval_null();
389 return S_OK;
390 }
391
392 jsdisp = iface_to_jsdisp(get_object(val));
393 if(!jsdisp)
394 return disp_propget(ctx, get_object(val), DISPID_VALUE, ret);
395
396 if(hint == NO_HINT)
397 hint = is_class(jsdisp, JSCLASS_DATE) ? HINT_STRING : HINT_NUMBER;
398
399 /* Native implementation doesn't throw TypeErrors, returns strange values */
400
401 hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? toStringW : valueOfW, 0, &id);
402 if(SUCCEEDED(hres)) {
403 hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, 0, NULL, &prim);
404 if(FAILED(hres)) {
405 WARN("call error - forwarding exception\n");
406 jsdisp_release(jsdisp);
407 return hres;
408 }else if(!is_object_instance(prim)) {
409 jsdisp_release(jsdisp);
410 *ret = prim;
411 return S_OK;
412 }else {
413 IDispatch_Release(get_object(prim));
414 }
415 }
416
417 hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? valueOfW : toStringW, 0, &id);
418 if(SUCCEEDED(hres)) {
419 hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, 0, NULL, &prim);
420 if(FAILED(hres)) {
421 WARN("call error - forwarding exception\n");
422 jsdisp_release(jsdisp);
423 return hres;
424 }else if(!is_object_instance(prim)) {
425 jsdisp_release(jsdisp);
426 *ret = prim;
427 return S_OK;
428 }else {
429 IDispatch_Release(get_object(prim));
430 }
431 }
432
433 jsdisp_release(jsdisp);
434
435 WARN("failed\n");
436 return throw_type_error(ctx, JS_E_TO_PRIMITIVE, NULL);
437 }
438
439 return jsval_copy(val, ret);
440
441 }
442
443 /* ECMA-262 3rd Edition 9.2 */
444 HRESULT to_boolean(jsval_t val, BOOL *ret)
445 {
446 switch(jsval_type(val)) {
447 case JSV_UNDEFINED:
448 case JSV_NULL:
449 *ret = FALSE;
450 return S_OK;
451 case JSV_OBJECT:
452 *ret = get_object(val) != NULL;
453 return S_OK;
454 case JSV_STRING:
455 *ret = jsstr_length(get_string(val)) != 0;
456 return S_OK;
457 case JSV_NUMBER:
458 *ret = !isnan(get_number(val)) && get_number(val);
459 return S_OK;
460 case JSV_BOOL:
461 *ret = get_bool(val);
462 return S_OK;
463 case JSV_VARIANT:
464 FIXME("unimplemented for variant %s\n", debugstr_variant(get_variant(val)));
465 return E_NOTIMPL;
466 }
467
468 assert(0);
469 return E_FAIL;
470 }
471
472 static int hex_to_int(WCHAR c)
473 {
474 if('0' <= c && c <= '9')
475 return c-'0';
476
477 if('a' <= c && c <= 'f')
478 return c-'a'+10;
479
480 if('A' <= c && c <= 'F')
481 return c-'A'+10;
482
483 return -1;
484 }
485
486 /* ECMA-262 3rd Edition 9.3.1 */
487 static HRESULT str_to_number(jsstr_t *str, double *ret)
488 {
489 const WCHAR *ptr;
490 BOOL neg = FALSE;
491 DOUBLE d = 0.0;
492
493 static const WCHAR infinityW[] = {'I','n','f','i','n','i','t','y'};
494
495 ptr = jsstr_flatten(str);
496 if(!ptr)
497 return E_OUTOFMEMORY;
498
499 while(isspaceW(*ptr))
500 ptr++;
501
502 if(*ptr == '-') {
503 neg = TRUE;
504 ptr++;
505 }else if(*ptr == '+') {
506 ptr++;
507 }
508
509 if(!strncmpW(ptr, infinityW, sizeof(infinityW)/sizeof(WCHAR))) {
510 ptr += sizeof(infinityW)/sizeof(WCHAR);
511 while(*ptr && isspaceW(*ptr))
512 ptr++;
513
514 if(*ptr)
515 *ret = NAN;
516 else
517 *ret = neg ? -INFINITY : INFINITY;
518 return S_OK;
519 }
520
521 if(*ptr == '0' && ptr[1] == 'x') {
522 DWORD l = 0;
523
524 ptr += 2;
525 while((l = hex_to_int(*ptr)) != -1) {
526 d = d*16 + l;
527 ptr++;
528 }
529
530 *ret = d;
531 return S_OK;
532 }
533
534 while(isdigitW(*ptr))
535 d = d*10 + (*ptr++ - '0');
536
537 if(*ptr == 'e' || *ptr == 'E') {
538 BOOL eneg = FALSE;
539 LONG l = 0;
540
541 ptr++;
542 if(*ptr == '-') {
543 ptr++;
544 eneg = TRUE;
545 }else if(*ptr == '+') {
546 ptr++;
547 }
548
549 while(isdigitW(*ptr))
550 l = l*10 + (*ptr++ - '0');
551 if(eneg)
552 l = -l;
553
554 d *= pow(10, l);
555 }else if(*ptr == '.') {
556 DOUBLE dec = 0.1;
557
558 ptr++;
559 while(isdigitW(*ptr)) {
560 d += dec * (*ptr++ - '0');
561 dec *= 0.1;
562 }
563 }
564
565 while(isspaceW(*ptr))
566 ptr++;
567
568 if(*ptr) {
569 *ret = NAN;
570 return S_OK;
571 }
572
573 if(neg)
574 d = -d;
575
576 *ret = d;
577 return S_OK;
578 }
579
580 /* ECMA-262 3rd Edition 9.3 */
581 HRESULT to_number(script_ctx_t *ctx, jsval_t val, double *ret)
582 {
583 switch(jsval_type(val)) {
584 case JSV_UNDEFINED:
585 *ret = NAN;
586 return S_OK;
587 case JSV_NULL:
588 *ret = 0;
589 return S_OK;
590 case JSV_NUMBER:
591 *ret = get_number(val);
592 return S_OK;
593 case JSV_STRING:
594 return str_to_number(get_string(val), ret);
595 case JSV_OBJECT: {
596 jsval_t prim;
597 HRESULT hres;
598
599 hres = to_primitive(ctx, val, &prim, HINT_NUMBER);
600 if(FAILED(hres))
601 return hres;
602
603 hres = to_number(ctx, prim, ret);
604 jsval_release(prim);
605 return hres;
606 }
607 case JSV_BOOL:
608 *ret = get_bool(val) ? 1 : 0;
609 return S_OK;
610 case JSV_VARIANT:
611 FIXME("unimplemented for variant %s\n", debugstr_variant(get_variant(val)));
612 return E_NOTIMPL;
613 };
614
615 assert(0);
616 return E_FAIL;
617 }
618
619 /* ECMA-262 3rd Edition 9.4 */
620 HRESULT to_integer(script_ctx_t *ctx, jsval_t v, double *ret)
621 {
622 double n;
623 HRESULT hres;
624
625 hres = to_number(ctx, v, &n);
626 if(FAILED(hres))
627 return hres;
628
629 if(isnan(n))
630 *ret = 0;
631 else
632 *ret = n >= 0.0 ? floor(n) : -floor(-n);
633 return S_OK;
634 }
635
636 /* ECMA-262 3rd Edition 9.5 */
637 HRESULT to_int32(script_ctx_t *ctx, jsval_t v, INT *ret)
638 {
639 double n;
640 HRESULT hres;
641
642 hres = to_number(ctx, v, &n);
643 if(FAILED(hres))
644 return hres;
645
646 *ret = is_finite(n) ? n : 0;
647 return S_OK;
648 }
649
650 /* ECMA-262 3rd Edition 9.6 */
651 HRESULT to_uint32(script_ctx_t *ctx, jsval_t val, DWORD *ret)
652 {
653 INT32 n;
654 HRESULT hres;
655
656 hres = to_int32(ctx, val, &n);
657 if(SUCCEEDED(hres))
658 *ret = n;
659 return hres;
660 }
661
662 static jsstr_t *int_to_string(int i)
663 {
664 WCHAR buf[12], *p;
665 BOOL neg = FALSE;
666
667 if(!i) {
668 static const WCHAR zeroW[] = {'0',0};
669 return jsstr_alloc(zeroW);
670 }
671
672 if(i < 0) {
673 neg = TRUE;
674 i = -i;
675 }
676
677 p = buf + sizeof(buf)/sizeof(*buf)-1;
678 *p-- = 0;
679 while(i) {
680 *p-- = i%10 + '0';
681 i /= 10;
682 }
683
684 if(neg)
685 *p = '-';
686 else
687 p++;
688
689 return jsstr_alloc(p);
690 }
691
692 HRESULT double_to_string(double n, jsstr_t **str)
693 {
694 const WCHAR InfinityW[] = {'-','I','n','f','i','n','i','t','y',0};
695
696 if(isnan(n)) {
697 *str = jsstr_nan();
698 }else if(isinf(n)) {
699 *str = jsstr_alloc(n<0 ? InfinityW : InfinityW+1);
700 }else if(is_int32(n)) {
701 *str = int_to_string(n);
702 }else {
703 VARIANT strv, v;
704 HRESULT hres;
705
706 /* FIXME: Don't use VariantChangeTypeEx */
707 V_VT(&v) = VT_R8;
708 V_R8(&v) = n;
709 V_VT(&strv) = VT_EMPTY;
710 hres = VariantChangeTypeEx(&strv, &v, MAKELCID(MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),SORT_DEFAULT), 0, VT_BSTR);
711 if(FAILED(hres))
712 return hres;
713
714 *str = jsstr_alloc(V_BSTR(&strv));
715 SysFreeString(V_BSTR(&strv));
716 }
717
718 return *str ? S_OK : E_OUTOFMEMORY;
719 }
720
721 /* ECMA-262 3rd Edition 9.8 */
722 HRESULT to_string(script_ctx_t *ctx, jsval_t val, jsstr_t **str)
723 {
724 const WCHAR nullW[] = {'n','u','l','l',0};
725 const WCHAR trueW[] = {'t','r','u','e',0};
726 const WCHAR falseW[] = {'f','a','l','s','e',0};
727
728 switch(jsval_type(val)) {
729 case JSV_UNDEFINED:
730 *str = jsstr_undefined();
731 return S_OK;
732 case JSV_NULL:
733 *str = jsstr_alloc(nullW);
734 break;
735 case JSV_NUMBER:
736 return double_to_string(get_number(val), str);
737 case JSV_STRING:
738 *str = jsstr_addref(get_string(val));
739 break;
740 case JSV_OBJECT: {
741 jsval_t prim;
742 HRESULT hres;
743
744 hres = to_primitive(ctx, val, &prim, HINT_STRING);
745 if(FAILED(hres))
746 return hres;
747
748 hres = to_string(ctx, prim, str);
749 jsval_release(prim);
750 return hres;
751 }
752 case JSV_BOOL:
753 *str = jsstr_alloc(get_bool(val) ? trueW : falseW);
754 break;
755 default:
756 FIXME("unsupported %s\n", debugstr_jsval(val));
757 return E_NOTIMPL;
758 }
759
760 return *str ? S_OK : E_OUTOFMEMORY;
761 }
762
763 HRESULT to_flat_string(script_ctx_t *ctx, jsval_t val, jsstr_t **str, const WCHAR **ret_str)
764 {
765 HRESULT hres;
766
767 hres = to_string(ctx, val, str);
768 if(FAILED(hres))
769 return hres;
770
771 *ret_str = jsstr_flatten(*str);
772 if(!*ret_str) {
773 jsstr_release(*str);
774 return E_OUTOFMEMORY;
775 }
776
777 return S_OK;
778 }
779
780 /* ECMA-262 3rd Edition 9.9 */
781 HRESULT to_object(script_ctx_t *ctx, jsval_t val, IDispatch **disp)
782 {
783 jsdisp_t *dispex;
784 HRESULT hres;
785
786 switch(jsval_type(val)) {
787 case JSV_STRING:
788 hres = create_string(ctx, get_string(val), &dispex);
789 if(FAILED(hres))
790 return hres;
791
792 *disp = to_disp(dispex);
793 break;
794 case JSV_NUMBER:
795 hres = create_number(ctx, get_number(val), &dispex);
796 if(FAILED(hres))
797 return hres;
798
799 *disp = to_disp(dispex);
800 break;
801 case JSV_OBJECT:
802 if(get_object(val)) {
803 *disp = get_object(val);
804 IDispatch_AddRef(*disp);
805 }else {
806 jsdisp_t *obj;
807
808 hres = create_object(ctx, NULL, &obj);
809 if(FAILED(hres))
810 return hres;
811
812 *disp = to_disp(obj);
813 }
814 break;
815 case JSV_BOOL:
816 hres = create_bool(ctx, get_bool(val), &dispex);
817 if(FAILED(hres))
818 return hres;
819
820 *disp = to_disp(dispex);
821 break;
822 case JSV_UNDEFINED:
823 case JSV_NULL:
824 WARN("object expected\n");
825 return throw_type_error(ctx, JS_E_OBJECT_EXPECTED, NULL);
826 case JSV_VARIANT:
827 switch(V_VT(get_variant(val))) {
828 case VT_ARRAY|VT_VARIANT:
829 hres = create_vbarray(ctx, V_ARRAY(get_variant(val)), &dispex);
830 if(FAILED(hres))
831 return hres;
832
833 *disp = to_disp(dispex);
834 break;
835
836 default:
837 FIXME("Unsupported %s\n", debugstr_variant(get_variant(val)));
838 return E_NOTIMPL;
839 }
840 break;
841 }
842
843 return S_OK;
844 }
845
846 HRESULT variant_change_type(script_ctx_t *ctx, VARIANT *dst, VARIANT *src, VARTYPE vt)
847 {
848 jsval_t val;
849 HRESULT hres;
850
851 clear_ei(ctx);
852 hres = variant_to_jsval(src, &val);
853 if(FAILED(hres))
854 return hres;
855
856 switch(vt) {
857 case VT_I2:
858 case VT_I4: {
859 INT i;
860
861 hres = to_int32(ctx, val, &i);
862 if(SUCCEEDED(hres)) {
863 if(vt == VT_I4)
864 V_I4(dst) = i;
865 else
866 V_I2(dst) = i;
867 }
868 break;
869 }
870 case VT_R8: {
871 double n;
872 hres = to_number(ctx, val, &n);
873 if(SUCCEEDED(hres))
874 V_R8(dst) = n;
875 break;
876 }
877 case VT_R4: {
878 double n;
879
880 hres = to_number(ctx, val, &n);
881 if(SUCCEEDED(hres))
882 V_R4(dst) = n;
883 break;
884 }
885 case VT_BOOL: {
886 BOOL b;
887
888 hres = to_boolean(val, &b);
889 if(SUCCEEDED(hres))
890 V_BOOL(dst) = b ? VARIANT_TRUE : VARIANT_FALSE;
891 break;
892 }
893 case VT_BSTR: {
894 jsstr_t *str;
895
896 hres = to_string(ctx, val, &str);
897 if(FAILED(hres))
898 break;
899
900 if(is_null_bstr(str)) {
901 V_BSTR(dst) = NULL;
902 break;
903 }
904
905 V_BSTR(dst) = SysAllocStringLen(NULL, jsstr_length(str));
906 if(V_BSTR(dst))
907 jsstr_flush(str, V_BSTR(dst));
908 else
909 hres = E_OUTOFMEMORY;
910 break;
911 }
912 case VT_EMPTY:
913 hres = V_VT(src) == VT_EMPTY ? S_OK : E_NOTIMPL;
914 break;
915 case VT_NULL:
916 hres = V_VT(src) == VT_NULL ? S_OK : E_NOTIMPL;
917 break;
918 default:
919 FIXME("vt %d not implemented\n", vt);
920 hres = E_NOTIMPL;
921 }
922
923 jsval_release(val);
924 if(FAILED(hres))
925 return hres;
926
927 V_VT(dst) = vt;
928 return S_OK;
929 }
930
931 static inline JSCaller *impl_from_IServiceProvider(IServiceProvider *iface)
932 {
933 return CONTAINING_RECORD(iface, JSCaller, IServiceProvider_iface);
934 }
935
936 static HRESULT WINAPI JSCaller_QueryInterface(IServiceProvider *iface, REFIID riid, void **ppv)
937 {
938 JSCaller *This = impl_from_IServiceProvider(iface);
939
940 if(IsEqualGUID(&IID_IUnknown, riid)) {
941 TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
942 *ppv = &This->IServiceProvider_iface;
943 }else if(IsEqualGUID(&IID_IServiceProvider, riid)) {
944 TRACE("(%p)->(IID_IServiceProvider %p)\n", This, ppv);
945 *ppv = &This->IServiceProvider_iface;
946 }else {
947 WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
948 *ppv = NULL;
949 return E_NOINTERFACE;
950 }
951
952 IUnknown_AddRef((IUnknown*)*ppv);
953 return S_OK;
954 }
955
956 static ULONG WINAPI JSCaller_AddRef(IServiceProvider *iface)
957 {
958 JSCaller *This = impl_from_IServiceProvider(iface);
959 LONG ref = InterlockedIncrement(&This->ref);
960
961 TRACE("(%p) ref=%d\n", This, ref);
962
963 return ref;
964 }
965
966 static ULONG WINAPI JSCaller_Release(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 if(!ref) {
974 assert(!This->ctx);
975 heap_free(This);
976 }
977
978 return ref;
979 }
980
981 static HRESULT WINAPI JSCaller_QueryService(IServiceProvider *iface, REFGUID guidService,
982 REFIID riid, void **ppv)
983 {
984 JSCaller *This = impl_from_IServiceProvider(iface);
985
986 if(IsEqualGUID(guidService, &SID_VariantConversion) && This->ctx && This->ctx->active_script) {
987 TRACE("(%p)->(SID_VariantConversion)\n", This);
988 return IActiveScript_QueryInterface(This->ctx->active_script, riid, ppv);
989 }
990
991 FIXME("(%p)->(%s %s %p)\n", This, debugstr_guid(guidService), debugstr_guid(riid), ppv);
992
993 *ppv = NULL;
994 return E_NOINTERFACE;
995 }
996
997 static const IServiceProviderVtbl ServiceProviderVtbl = {
998 JSCaller_QueryInterface,
999 JSCaller_AddRef,
1000 JSCaller_Release,
1001 JSCaller_QueryService
1002 };
1003
1004 HRESULT create_jscaller(script_ctx_t *ctx)
1005 {
1006 JSCaller *ret;
1007
1008 ret = heap_alloc(sizeof(*ret));
1009 if(!ret)
1010 return E_OUTOFMEMORY;
1011
1012 ret->IServiceProvider_iface.lpVtbl = &ServiceProviderVtbl;
1013 ret->ref = 1;
1014 ret->ctx = ctx;
1015
1016 ctx->jscaller = ret;
1017 return S_OK;
1018 }