dlls/jscript/dispex.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 <assert.h>
  20
  21 #include "jscript.h"
  22
  23 #include "wine/unicode.h"
  24 #include "wine/debug.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  27
  28 /*
  29  * This IID is used to get jsdisp_t objecto from interface.
  30  * We might consider using private interface instead.
  31  */
  32 static const IID IID_IDispatchJS =
  33         {0x719c3050,0xf9d3,0x11cf,{0xa4,0x93,0x00,0x40,0x05,0x23,0xa8,0xa6}};
  34
  35 #define FDEX_VERSION_MASK 0xf0000000
  36 #define GOLDEN_RATIO 0x9E3779B9U
  37
  38 typedef enum {
  39     PROP_VARIANT,
  40     PROP_BUILTIN,
  41     PROP_PROTREF,
  42     PROP_DELETED
  43 } prop_type_t;
  44
  45 struct _dispex_prop_t {
  46     WCHAR *name;
  47     unsigned hash;
  48     prop_type_t type;
  49     DWORD flags;
  50
  51     union {
  52         VARIANT var;
  53         const builtin_prop_t *p;
  54         DWORD ref;
  55     } u;
  56
  57     int bucket_head;
  58     int bucket_next;
  59 };
  60
  61 static inline DISPID prop_to_id(jsdisp_t *This, dispex_prop_t *prop)
  62 {
  63     return prop - This->props;
  64 }
  65
  66 static inline dispex_prop_t *get_prop(jsdisp_t *This, DISPID id)
  67 {
  68     if(id < 0 || id >= This->prop_cnt || This->props[id].type == PROP_DELETED)
  69         return NULL;
  70
  71     return This->props+id;
  72 }
  73
  74 static DWORD get_flags(jsdisp_t *This, dispex_prop_t *prop)
  75 {
  76     if(prop->type == PROP_PROTREF) {
  77         dispex_prop_t *parent = get_prop(This->prototype, prop->u.ref);
  78         if(!parent) {
  79             prop->type = PROP_DELETED;
  80             return 0;
  81         }
  82
  83         return get_flags(This->prototype, parent);
  84     }
  85
  86     return prop->flags;
  87 }
  88
  89 static const builtin_prop_t *find_builtin_prop(jsdisp_t *This, const WCHAR *name)
  90 {
  91     int min = 0, max, i, r;
  92
  93     max = This->builtin_info->props_cnt-1;
  94     while(min <= max) {
  95         i = (min+max)/2;
  96
  97         r = strcmpW(name, This->builtin_info->props[i].name);
  98         if(!r)
  99             return This->builtin_info->props + i;
 100
 101         if(r < 0)
 102             max = i-1;
 103         else
 104             min = i+1;
 105     }
 106
 107     return NULL;
 108 }
 109
 110 static inline unsigned string_hash(const WCHAR *name)
 111 {
 112     unsigned h = 0;
 113     for(; *name; name++)
 114         h = (h>>(sizeof(unsigned)*8-4)) ^ (h<<4) ^ tolowerW(*name);
 115     return h;
 116 }
 117
 118 static inline unsigned get_props_idx(jsdisp_t *This, unsigned hash)
 119 {
 120     return (hash*GOLDEN_RATIO) & (This->buf_size-1);
 121 }
 122
 123 static inline HRESULT resize_props(jsdisp_t *This)
 124 {
 125     dispex_prop_t *props;
 126     int i, bucket;
 127
 128     if(This->buf_size != This->prop_cnt)
 129         return S_FALSE;
 130
 131     props = heap_realloc(This->props, sizeof(dispex_prop_t)*This->buf_size*2);
 132     if(!props)
 133         return E_OUTOFMEMORY;
 134     This->buf_size *= 2;
 135     This->props = props;
 136
 137     for(i=0; i<This->buf_size; i++) {
 138         This->props[i].bucket_head = 0;
 139         This->props[i].bucket_next = 0;
 140     }
 141
 142     for(i=1; i<This->prop_cnt; i++) {
 143         props = This->props+i;
 144
 145         bucket = get_props_idx(This, props->hash);
 146         props->bucket_next = This->props[bucket].bucket_head;
 147         This->props[bucket].bucket_head = i;
 148     }
 149
 150     return S_OK;
 151 }
 152
 153 static inline dispex_prop_t* alloc_prop(jsdisp_t *This, const WCHAR *name, prop_type_t type, DWORD flags)
 154 {
 155     dispex_prop_t *prop;
 156     unsigned bucket;
 157
 158     if(FAILED(resize_props(This)))
 159         return NULL;
 160
 161     prop = &This->props[This->prop_cnt];
 162     prop->name = heap_strdupW(name);
 163     if(!prop->name)
 164         return NULL;
 165     prop->type = type;
 166     prop->flags = flags;
 167     prop->hash = string_hash(name);
 168
 169     bucket = get_props_idx(This, prop->hash);
 170     prop->bucket_next = This->props[bucket].bucket_head;
 171     This->props[bucket].bucket_head = This->prop_cnt++;
 172     return prop;
 173 }
 174
 175 static dispex_prop_t *alloc_protref(jsdisp_t *This, const WCHAR *name, DWORD ref)
 176 {
 177     dispex_prop_t *ret;
 178
 179     ret = alloc_prop(This, name, PROP_PROTREF, 0);
 180     if(!ret)
 181         return NULL;
 182
 183     ret->u.ref = ref;
 184     return ret;
 185 }
 186
 187 static HRESULT find_prop_name(jsdisp_t *This, unsigned hash, const WCHAR *name, dispex_prop_t **ret)
 188 {
 189     const builtin_prop_t *builtin;
 190     unsigned bucket, pos, prev = 0;
 191     dispex_prop_t *prop;
 192
 193     bucket = get_props_idx(This, hash);
 194     pos = This->props[bucket].bucket_head;
 195     while(pos != 0) {
 196         if(!strcmpW(name, This->props[pos].name)) {
 197             if(prev != 0) {
 198                 This->props[prev].bucket_next = This->props[pos].bucket_next;
 199                 This->props[pos].bucket_next = This->props[bucket].bucket_head;
 200                 This->props[bucket].bucket_head = pos;
 201             }
 202
 203             *ret = &This->props[pos];
 204             return S_OK;
 205         }
 206
 207         prev = pos;
 208         pos = This->props[pos].bucket_next;
 209     }
 210
 211     builtin = find_builtin_prop(This, name);
 212     if(builtin) {
 213         prop = alloc_prop(This, name, PROP_BUILTIN, builtin->flags);
 214         if(!prop)
 215             return E_OUTOFMEMORY;
 216
 217         prop->u.p = builtin;
 218         *ret = prop;
 219         return S_OK;
 220     }
 221
 222     *ret = NULL;
 223     return S_OK;
 224 }
 225
 226 static HRESULT find_prop_name_prot(jsdisp_t *This, unsigned hash, const WCHAR *name, dispex_prop_t **ret)
 227 {
 228     dispex_prop_t *prop, *del=NULL;
 229     HRESULT hres;
 230
 231     hres = find_prop_name(This, hash, name, &prop);
 232     if(FAILED(hres))
 233         return hres;
 234     if(prop && prop->type==PROP_DELETED) {
 235         del = prop;
 236     } else if(prop) {
 237         *ret = prop;
 238         return S_OK;
 239     }
 240
 241     if(This->prototype) {
 242         hres = find_prop_name_prot(This->prototype, hash, name, &prop);
 243         if(FAILED(hres))
 244             return hres;
 245         if(prop) {
 246             if(del) {
 247                 del->type = PROP_PROTREF;
 248                 del->flags = 0;
 249                 del->u.ref = prop - This->prototype->props;
 250                 prop = del;
 251             }else {
 252                 prop = alloc_protref(This, prop->name, prop - This->prototype->props);
 253                 if(!prop)
 254                     return E_OUTOFMEMORY;
 255             }
 256
 257             *ret = prop;
 258             return S_OK;
 259         }
 260     }
 261
 262     *ret = del;
 263     return S_OK;
 264 }
 265
 266 static HRESULT ensure_prop_name(jsdisp_t *This, const WCHAR *name, BOOL search_prot, DWORD create_flags, dispex_prop_t **ret)
 267 {
 268     dispex_prop_t *prop;
 269     HRESULT hres;
 270
 271     if(search_prot)
 272         hres = find_prop_name_prot(This, string_hash(name), name, &prop);
 273     else
 274         hres = find_prop_name(This, string_hash(name), name, &prop);
 275     if(SUCCEEDED(hres) && (!prop || prop->type==PROP_DELETED)) {
 276         TRACE("creating prop %s\n", debugstr_w(name));
 277
 278         if(prop) {
 279             prop->type = PROP_VARIANT;
 280             prop->flags = create_flags;
 281         }else {
 282             prop = alloc_prop(This, name, PROP_VARIANT, create_flags);
 283             if(!prop)
 284                 return E_OUTOFMEMORY;
 285         }
 286
 287         VariantInit(&prop->u.var);
 288     }
 289
 290     *ret = prop;
 291     return hres;
 292 }
 293
 294 static HRESULT set_this(DISPPARAMS *dp, DISPPARAMS *olddp, IDispatch *jsthis)
 295 {
 296     VARIANTARG *oldargs;
 297     int i;
 298
 299     static DISPID this_id = DISPID_THIS;
 300
 301     *dp = *olddp;
 302
 303     for(i = 0; i < dp->cNamedArgs; i++) {
 304         if(dp->rgdispidNamedArgs[i] == DISPID_THIS)
 305             return S_OK;
 306     }
 307
 308     oldargs = dp->rgvarg;
 309     dp->rgvarg = heap_alloc((dp->cArgs+1) * sizeof(VARIANTARG));
 310     if(!dp->rgvarg)
 311         return E_OUTOFMEMORY;
 312     memcpy(dp->rgvarg+1, oldargs, dp->cArgs*sizeof(VARIANTARG));
 313     V_VT(dp->rgvarg) = VT_DISPATCH;
 314     V_DISPATCH(dp->rgvarg) = jsthis;
 315     dp->cArgs++;
 316
 317     if(dp->cNamedArgs) {
 318         DISPID *old = dp->rgdispidNamedArgs;
 319         dp->rgdispidNamedArgs = heap_alloc((dp->cNamedArgs+1)*sizeof(DISPID));
 320         if(!dp->rgdispidNamedArgs) {
 321             heap_free(dp->rgvarg);
 322             return E_OUTOFMEMORY;
 323         }
 324
 325         memcpy(dp->rgdispidNamedArgs+1, old, dp->cNamedArgs*sizeof(DISPID));
 326         dp->rgdispidNamedArgs[0] = DISPID_THIS;
 327         dp->cNamedArgs++;
 328     }else {
 329         dp->rgdispidNamedArgs = &this_id;
 330         dp->cNamedArgs = 1;
 331     }
 332
 333     return S_OK;
 334 }
 335
 336 static HRESULT convert_params(const DISPPARAMS *dp, VARIANT *buf, DISPPARAMS *ret)
 337 {
 338     BOOL need_conversion = FALSE;
 339     const VARIANT *s;
 340     VARIANT *d;
 341     unsigned i;
 342
 343     *ret = *dp;
 344
 345     for(i = 0; i < ret->cArgs; i++) {
 346         if(V_VT(get_arg(dp, i)) == VT_I2) {
 347             need_conversion = TRUE;
 348             break;
 349         }
 350     }
 351
 352     if(!need_conversion)
 353         return S_OK;
 354
 355     if(ret->cArgs > 6) {
 356         ret->rgvarg = heap_alloc(ret->cArgs * sizeof(VARIANT));
 357         if(!ret->rgvarg)
 358             return E_OUTOFMEMORY;
 359     }else {
 360         ret->rgvarg = buf;
 361     }
 362
 363     for(i = 0; i < ret->cArgs; i++) {
 364         s = get_arg(dp, i);
 365         d = get_arg(ret, i);
 366         switch(V_VT(s)) {
 367         case VT_I2:
 368             V_VT(d) = VT_I4;
 369             V_I4(d) = V_I2(s);
 370             break;
 371         default:
 372             *d = *s;
 373         }
 374     }
 375
 376     return S_OK;
 377 }
 378
 379 static HRESULT invoke_prop_func(jsdisp_t *This, jsdisp_t *jsthis, dispex_prop_t *prop, WORD flags,
 380         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
 381 {
 382     HRESULT hres;
 383
 384     switch(prop->type) {
 385     case PROP_BUILTIN: {
 386         DISPPARAMS params;
 387         VARIANT buf[6];
 388         vdisp_t vthis;
 389
 390         if(flags == DISPATCH_CONSTRUCT && (prop->flags & PROPF_METHOD)) {
 391             WARN("%s is not a constructor\n", debugstr_w(prop->name));
 392             return E_INVALIDARG;
 393         }
 394
 395         hres = convert_params(dp, buf, &params);
 396         if(FAILED(hres))
 397             return hres;
 398
 399         set_jsdisp(&vthis, jsthis);
 400         hres = prop->u.p->invoke(This->ctx, &vthis, flags, &params, retv, ei);
 401         vdisp_release(&vthis);
 402         if(params.rgvarg != buf && params.rgvarg != dp->rgvarg)
 403             heap_free(params.rgvarg);
 404         return hres;
 405     }
 406     case PROP_PROTREF:
 407         return invoke_prop_func(This->prototype, jsthis, This->prototype->props+prop->u.ref, flags, dp, retv, ei, caller);
 408     case PROP_VARIANT: {
 409         DISPPARAMS new_dp;
 410
 411         if(V_VT(&prop->u.var) != VT_DISPATCH) {
 412             FIXME("invoke vt %d\n", V_VT(&prop->u.var));
 413             return E_FAIL;
 414         }
 415
 416         TRACE("call %s %p\n", debugstr_w(prop->name), V_DISPATCH(&prop->u.var));
 417
 418         hres = set_this(&new_dp, dp, to_disp(jsthis));
 419         if(FAILED(hres))
 420             return hres;
 421
 422         hres = disp_call(This->ctx, V_DISPATCH(&prop->u.var), DISPID_VALUE, flags, &new_dp, retv, ei);
 423
 424         if(new_dp.rgvarg != dp->rgvarg) {
 425             heap_free(new_dp.rgvarg);
 426             if(new_dp.cNamedArgs > 1)
 427                 heap_free(new_dp.rgdispidNamedArgs);
 428         }
 429
 430         return hres;
 431     }
 432     default:
 433         ERR("type %d\n", prop->type);
 434     }
 435
 436     return E_FAIL;
 437 }
 438
 439 static HRESULT prop_get(jsdisp_t *This, dispex_prop_t *prop, DISPPARAMS *dp,
 440         VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
 441 {
 442     HRESULT hres;
 443
 444     switch(prop->type) {
 445     case PROP_BUILTIN:
 446         if(prop->u.p->flags & PROPF_METHOD) {
 447             jsdisp_t *obj;
 448             hres = create_builtin_function(This->ctx, prop->u.p->invoke, prop->u.p->name, NULL,
 449                     prop->u.p->flags, NULL, &obj);
 450             if(FAILED(hres))
 451                 break;
 452
 453             prop->type = PROP_VARIANT;
 454             var_set_jsdisp(&prop->u.var, obj);
 455             hres = VariantCopy(retv, &prop->u.var);
 456         }else {
 457             vdisp_t vthis;
 458
 459             set_jsdisp(&vthis, This);
 460             hres = prop->u.p->invoke(This->ctx, &vthis, DISPATCH_PROPERTYGET, dp, retv, ei);
 461             vdisp_release(&vthis);
 462         }
 463         break;
 464     case PROP_PROTREF:
 465         hres = prop_get(This->prototype, This->prototype->props+prop->u.ref, dp, retv, ei, caller);
 466         break;
 467     case PROP_VARIANT:
 468         hres = VariantCopy(retv, &prop->u.var);
 469         break;
 470     default:
 471         ERR("type %d\n", prop->type);
 472         return E_FAIL;
 473     }
 474
 475     if(FAILED(hres)) {
 476         TRACE("fail %08x\n", hres);
 477         return hres;
 478     }
 479
 480     TRACE("%s ret %s\n", debugstr_w(prop->name), debugstr_variant(retv));
 481     return hres;
 482 }
 483
 484 static HRESULT prop_put(jsdisp_t *This, dispex_prop_t *prop, VARIANT *val,
 485         jsexcept_t *ei, IServiceProvider *caller)
 486 {
 487     HRESULT hres;
 488
 489     if(prop->flags & PROPF_CONST)
 490         return S_OK;
 491
 492     switch(prop->type) {
 493     case PROP_BUILTIN:
 494         if(!(prop->flags & PROPF_METHOD)) {
 495             DISPPARAMS dp = {val, NULL, 1, 0};
 496             vdisp_t vthis;
 497
 498             set_jsdisp(&vthis, This);
 499             hres = prop->u.p->invoke(This->ctx, &vthis, DISPATCH_PROPERTYPUT, &dp, NULL, ei);
 500             vdisp_release(&vthis);
 501             return hres;
 502         }
 503     case PROP_PROTREF:
 504         prop->type = PROP_VARIANT;
 505         prop->flags = PROPF_ENUM;
 506         V_VT(&prop->u.var) = VT_EMPTY;
 507         break;
 508     case PROP_VARIANT:
 509         VariantClear(&prop->u.var);
 510         break;
 511     default:
 512         ERR("type %d\n", prop->type);
 513         return E_FAIL;
 514     }
 515
 516     hres = VariantCopy(&prop->u.var, val);
 517     if(FAILED(hres))
 518         return hres;
 519
 520     if(This->builtin_info->on_put)
 521         This->builtin_info->on_put(This, prop->name);
 522
 523     TRACE("%s = %s\n", debugstr_w(prop->name), debugstr_variant(val));
 524     return S_OK;
 525 }
 526
 527 static HRESULT fill_protrefs(jsdisp_t *This)
 528 {
 529     dispex_prop_t *iter, *prop;
 530     HRESULT hres;
 531
 532     if(!This->prototype)
 533         return S_OK;
 534
 535     fill_protrefs(This->prototype);
 536
 537     for(iter = This->prototype->props; iter < This->prototype->props+This->prototype->prop_cnt; iter++) {
 538         if(!iter->name)
 539             continue;
 540         hres = find_prop_name(This, iter->hash, iter->name, &prop);
 541         if(FAILED(hres))
 542             return hres;
 543         if(!prop || prop->type==PROP_DELETED) {
 544             if(prop) {
 545                 prop->type = PROP_PROTREF;
 546                 prop->flags = 0;
 547                 prop->u.ref = iter - This->prototype->props;
 548             }else {
 549                 prop = alloc_protref(This, iter->name, iter - This->prototype->props);
 550                 if(!prop)
 551                     return E_OUTOFMEMORY;
 552             }
 553         }
 554     }
 555
 556     return S_OK;
 557 }
 558
 559 static inline jsdisp_t *impl_from_IDispatchEx(IDispatchEx *iface)
 560 {
 561     return CONTAINING_RECORD(iface, jsdisp_t, IDispatchEx_iface);
 562 }
 563
 564 static HRESULT WINAPI DispatchEx_QueryInterface(IDispatchEx *iface, REFIID riid, void **ppv)
 565 {
 566     jsdisp_t *This = impl_from_IDispatchEx(iface);
 567
 568     if(IsEqualGUID(&IID_IUnknown, riid)) {
 569         TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
 570         *ppv = &This->IDispatchEx_iface;
 571     }else if(IsEqualGUID(&IID_IDispatch, riid)) {
 572         TRACE("(%p)->(IID_IDispatch %p)\n", This, ppv);
 573         *ppv = &This->IDispatchEx_iface;
 574     }else if(IsEqualGUID(&IID_IDispatchEx, riid)) {
 575         TRACE("(%p)->(IID_IDispatchEx %p)\n", This, ppv);
 576         *ppv = &This->IDispatchEx_iface;
 577     }else if(IsEqualGUID(&IID_IDispatchJS, riid)) {
 578         TRACE("(%p)->(IID_IDispatchJS %p)\n", This, ppv);
 579         jsdisp_addref(This);
 580         *ppv = This;
 581         return S_OK;
 582     }else {
 583         WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
 584         *ppv = NULL;
 585         return E_NOINTERFACE;
 586     }
 587
 588     IUnknown_AddRef((IUnknown*)*ppv);
 589     return S_OK;
 590 }
 591
 592 static ULONG WINAPI DispatchEx_AddRef(IDispatchEx *iface)
 593 {
 594     jsdisp_t *This = impl_from_IDispatchEx(iface);
 595     LONG ref = InterlockedIncrement(&This->ref);
 596
 597     TRACE("(%p) ref=%d\n", This, ref);
 598
 599     return ref;
 600 }
 601
 602 static ULONG WINAPI DispatchEx_Release(IDispatchEx *iface)
 603 {
 604     jsdisp_t *This = impl_from_IDispatchEx(iface);
 605     LONG ref = InterlockedDecrement(&This->ref);
 606
 607     TRACE("(%p) ref=%d\n", This, ref);
 608
 609     if(!ref) {
 610         dispex_prop_t *prop;
 611
 612         for(prop = This->props; prop < This->props+This->prop_cnt; prop++) {
 613             if(prop->type == PROP_VARIANT)
 614                 VariantClear(&prop->u.var);
 615             heap_free(prop->name);
 616         }
 617         heap_free(This->props);
 618         script_release(This->ctx);
 619         if(This->prototype)
 620             jsdisp_release(This->prototype);
 621
 622         if(This->builtin_info->destructor)
 623             This->builtin_info->destructor(This);
 624         else
 625             heap_free(This);
 626     }
 627
 628     return ref;
 629 }
 630
 631 static HRESULT WINAPI DispatchEx_GetTypeInfoCount(IDispatchEx *iface, UINT *pctinfo)
 632 {
 633     jsdisp_t *This = impl_from_IDispatchEx(iface);
 634
 635     TRACE("(%p)->(%p)\n", This, pctinfo);
 636
 637     *pctinfo = 1;
 638     return S_OK;
 639 }
 640
 641 static HRESULT WINAPI DispatchEx_GetTypeInfo(IDispatchEx *iface, UINT iTInfo, LCID lcid,
 642                                               ITypeInfo **ppTInfo)
 643 {
 644     jsdisp_t *This = impl_from_IDispatchEx(iface);
 645     FIXME("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
 646     return E_NOTIMPL;
 647 }
 648
 649 static HRESULT WINAPI DispatchEx_GetIDsOfNames(IDispatchEx *iface, REFIID riid,
 650                                                 LPOLESTR *rgszNames, UINT cNames, LCID lcid,
 651                                                 DISPID *rgDispId)
 652 {
 653     jsdisp_t *This = impl_from_IDispatchEx(iface);
 654     UINT i;
 655     HRESULT hres;
 656
 657     TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
 658           lcid, rgDispId);
 659
 660     for(i=0; i < cNames; i++) {
 661         hres = IDispatchEx_GetDispID(&This->IDispatchEx_iface, rgszNames[i], 0, rgDispId+i);
 662         if(FAILED(hres))
 663             return hres;
 664     }
 665
 666     return S_OK;
 667 }
 668
 669 static HRESULT WINAPI DispatchEx_Invoke(IDispatchEx *iface, DISPID dispIdMember,
 670                                         REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams,
 671                             VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
 672 {
 673     jsdisp_t *This = impl_from_IDispatchEx(iface);
 674
 675     TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
 676           lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 677
 678     return IDispatchEx_InvokeEx(&This->IDispatchEx_iface, dispIdMember, lcid, wFlags,
 679             pDispParams, pVarResult, pExcepInfo, NULL);
 680 }
 681
 682 static HRESULT WINAPI DispatchEx_GetDispID(IDispatchEx *iface, BSTR bstrName, DWORD grfdex, DISPID *pid)
 683 {
 684     jsdisp_t *This = impl_from_IDispatchEx(iface);
 685
 686     TRACE("(%p)->(%s %x %p)\n", This, debugstr_w(bstrName), grfdex, pid);
 687
 688     if(grfdex & ~(fdexNameCaseSensitive|fdexNameEnsure|fdexNameImplicit|FDEX_VERSION_MASK)) {
 689         FIXME("Unsupported grfdex %x\n", grfdex);
 690         return E_NOTIMPL;
 691     }
 692
 693     return jsdisp_get_id(This, bstrName, grfdex, pid);
 694 }
 695
 696 static HRESULT WINAPI DispatchEx_InvokeEx(IDispatchEx *iface, DISPID id, LCID lcid, WORD wFlags, DISPPARAMS *pdp,
 697         VARIANT *pvarRes, EXCEPINFO *pei, IServiceProvider *pspCaller)
 698 {
 699     jsdisp_t *This = impl_from_IDispatchEx(iface);
 700     dispex_prop_t *prop;
 701     jsexcept_t jsexcept;
 702     HRESULT hres;
 703
 704     TRACE("(%p)->(%x %x %x %p %p %p %p)\n", This, id, lcid, wFlags, pdp, pvarRes, pei, pspCaller);
 705
 706     if(pvarRes)
 707         V_VT(pvarRes) = VT_EMPTY;
 708
 709     prop = get_prop(This, id);
 710     if(!prop || prop->type == PROP_DELETED) {
 711         TRACE("invalid id\n");
 712         return DISP_E_MEMBERNOTFOUND;
 713     }
 714
 715     memset(&jsexcept, 0, sizeof(jsexcept));
 716
 717     switch(wFlags) {
 718     case DISPATCH_METHOD|DISPATCH_PROPERTYGET:
 719         wFlags = DISPATCH_METHOD;
 720         /* fall through */
 721     case DISPATCH_METHOD:
 722     case DISPATCH_CONSTRUCT:
 723         hres = invoke_prop_func(This, This, prop, wFlags, pdp, pvarRes, &jsexcept, pspCaller);
 724         break;
 725     case DISPATCH_PROPERTYGET:
 726         hres = prop_get(This, prop, pdp, pvarRes, &jsexcept, pspCaller);
 727         break;
 728     case DISPATCH_PROPERTYPUT: {
 729         DWORD i;
 730
 731         for(i=0; i < pdp->cNamedArgs; i++) {
 732             if(pdp->rgdispidNamedArgs[i] == DISPID_PROPERTYPUT)
 733                 break;
 734         }
 735
 736         if(i == pdp->cNamedArgs) {
 737             TRACE("no value to set\n");
 738             return DISP_E_PARAMNOTOPTIONAL;
 739         }
 740
 741         hres = prop_put(This, prop, pdp->rgvarg+i, &jsexcept, pspCaller);
 742         break;
 743     }
 744     default:
 745         FIXME("Unimplemented flags %x\n", wFlags);
 746         return E_INVALIDARG;
 747     }
 748
 749     if(pei)
 750         *pei = jsexcept.ei;
 751
 752     return hres;
 753 }
 754
 755 static HRESULT delete_prop(dispex_prop_t *prop)
 756 {
 757     if(prop->type == PROP_VARIANT) {
 758         VariantClear(&prop->u.var);
 759         prop->type = PROP_DELETED;
 760     }
 761     return S_OK;
 762 }
 763
 764 static HRESULT WINAPI DispatchEx_DeleteMemberByName(IDispatchEx *iface, BSTR bstrName, DWORD grfdex)
 765 {
 766     jsdisp_t *This = impl_from_IDispatchEx(iface);
 767     dispex_prop_t *prop;
 768     HRESULT hres;
 769
 770     TRACE("(%p)->(%s %x)\n", This, debugstr_w(bstrName), grfdex);
 771
 772     if(grfdex & ~(fdexNameCaseSensitive|fdexNameEnsure|fdexNameImplicit|FDEX_VERSION_MASK))
 773         FIXME("Unsupported grfdex %x\n", grfdex);
 774
 775     hres = find_prop_name(This, string_hash(bstrName), bstrName, &prop);
 776     if(FAILED(hres))
 777         return hres;
 778     if(!prop) {
 779         TRACE("not found\n");
 780         return S_OK;
 781     }
 782
 783     return delete_prop(prop);
 784 }
 785
 786 static HRESULT WINAPI DispatchEx_DeleteMemberByDispID(IDispatchEx *iface, DISPID id)
 787 {
 788     jsdisp_t *This = impl_from_IDispatchEx(iface);
 789     dispex_prop_t *prop;
 790
 791     TRACE("(%p)->(%x)\n", This, id);
 792
 793     prop = get_prop(This, id);
 794     if(!prop) {
 795         WARN("invalid id\n");
 796         return DISP_E_MEMBERNOTFOUND;
 797     }
 798
 799     return delete_prop(prop);
 800 }
 801
 802 static HRESULT WINAPI DispatchEx_GetMemberProperties(IDispatchEx *iface, DISPID id, DWORD grfdexFetch, DWORD *pgrfdex)
 803 {
 804     jsdisp_t *This = impl_from_IDispatchEx(iface);
 805     FIXME("(%p)->(%x %x %p)\n", This, id, grfdexFetch, pgrfdex);
 806     return E_NOTIMPL;
 807 }
 808
 809 static HRESULT WINAPI DispatchEx_GetMemberName(IDispatchEx *iface, DISPID id, BSTR *pbstrName)
 810 {
 811     jsdisp_t *This = impl_from_IDispatchEx(iface);
 812     dispex_prop_t *prop;
 813
 814     TRACE("(%p)->(%x %p)\n", This, id, pbstrName);
 815
 816     prop = get_prop(This, id);
 817     if(!prop || !prop->name || prop->type == PROP_DELETED)
 818         return DISP_E_MEMBERNOTFOUND;
 819
 820     *pbstrName = SysAllocString(prop->name);
 821     if(!*pbstrName)
 822         return E_OUTOFMEMORY;
 823
 824     return S_OK;
 825 }
 826
 827 static HRESULT WINAPI DispatchEx_GetNextDispID(IDispatchEx *iface, DWORD grfdex, DISPID id, DISPID *pid)
 828 {
 829     jsdisp_t *This = impl_from_IDispatchEx(iface);
 830     dispex_prop_t *iter;
 831     HRESULT hres;
 832
 833     TRACE("(%p)->(%x %x %p)\n", This, grfdex, id, pid);
 834
 835     if(id == DISPID_STARTENUM) {
 836         hres = fill_protrefs(This);
 837         if(FAILED(hres))
 838             return hres;
 839     }
 840
 841     if(id+1>=0 && id+1<This->prop_cnt) {
 842         iter = &This->props[id+1];
 843     }else {
 844         *pid = DISPID_STARTENUM;
 845         return S_FALSE;
 846     }
 847
 848     while(iter < This->props + This->prop_cnt) {
 849         if(iter->name && (get_flags(This, iter) & PROPF_ENUM) && iter->type!=PROP_DELETED) {
 850             *pid = prop_to_id(This, iter);
 851             return S_OK;
 852         }
 853         iter++;
 854     }
 855
 856     *pid = DISPID_STARTENUM;
 857     return S_FALSE;
 858 }
 859
 860 static HRESULT WINAPI DispatchEx_GetNameSpaceParent(IDispatchEx *iface, IUnknown **ppunk)
 861 {
 862     jsdisp_t *This = impl_from_IDispatchEx(iface);
 863     FIXME("(%p)->(%p)\n", This, ppunk);
 864     return E_NOTIMPL;
 865 }
 866
 867 static IDispatchExVtbl DispatchExVtbl = {
 868     DispatchEx_QueryInterface,
 869     DispatchEx_AddRef,
 870     DispatchEx_Release,
 871     DispatchEx_GetTypeInfoCount,
 872     DispatchEx_GetTypeInfo,
 873     DispatchEx_GetIDsOfNames,
 874     DispatchEx_Invoke,
 875     DispatchEx_GetDispID,
 876     DispatchEx_InvokeEx,
 877     DispatchEx_DeleteMemberByName,
 878     DispatchEx_DeleteMemberByDispID,
 879     DispatchEx_GetMemberProperties,
 880     DispatchEx_GetMemberName,
 881     DispatchEx_GetNextDispID,
 882     DispatchEx_GetNameSpaceParent
 883 };
 884
 885 jsdisp_t *as_jsdisp(IDispatch *disp)
 886 {
 887     assert(disp->lpVtbl == (IDispatchVtbl*)&DispatchExVtbl);
 888     return impl_from_IDispatchEx((IDispatchEx*)disp);
 889 }
 890
 891 jsdisp_t *to_jsdisp(IDispatch *disp)
 892 {
 893     return disp->lpVtbl == (IDispatchVtbl*)&DispatchExVtbl ? impl_from_IDispatchEx((IDispatchEx*)disp) : NULL;
 894 }
 895
 896 HRESULT init_dispex(jsdisp_t *dispex, script_ctx_t *ctx, const builtin_info_t *builtin_info, jsdisp_t *prototype)
 897 {
 898     TRACE("%p (%p)\n", dispex, prototype);
 899
 900     dispex->IDispatchEx_iface.lpVtbl = &DispatchExVtbl;
 901     dispex->ref = 1;
 902     dispex->builtin_info = builtin_info;
 903
 904     dispex->props = heap_alloc_zero(sizeof(dispex_prop_t)*(dispex->buf_size=4));
 905     if(!dispex->props)
 906         return E_OUTOFMEMORY;
 907
 908     dispex->prototype = prototype;
 909     if(prototype)
 910         jsdisp_addref(prototype);
 911
 912     dispex->prop_cnt = 1;
 913     if(builtin_info->value_prop.invoke) {
 914         dispex->props[0].type = PROP_BUILTIN;
 915         dispex->props[0].u.p = &builtin_info->value_prop;
 916     }else {
 917         dispex->props[0].type = PROP_DELETED;
 918     }
 919
 920     script_addref(ctx);
 921     dispex->ctx = ctx;
 922
 923     return S_OK;
 924 }
 925
 926 static const builtin_info_t dispex_info = {
 927     JSCLASS_NONE,
 928     {NULL, NULL, 0},
 929     0, NULL,
 930     NULL,
 931     NULL
 932 };
 933
 934 HRESULT create_dispex(script_ctx_t *ctx, const builtin_info_t *builtin_info, jsdisp_t *prototype, jsdisp_t **dispex)
 935 {
 936     jsdisp_t *ret;
 937     HRESULT hres;
 938
 939     ret = heap_alloc_zero(sizeof(jsdisp_t));
 940     if(!ret)
 941         return E_OUTOFMEMORY;
 942
 943     hres = init_dispex(ret, ctx, builtin_info ? builtin_info : &dispex_info, prototype);
 944     if(FAILED(hres))
 945         return hres;
 946
 947     *dispex = ret;
 948     return S_OK;
 949 }
 950
 951 HRESULT init_dispex_from_constr(jsdisp_t *dispex, script_ctx_t *ctx, const builtin_info_t *builtin_info, jsdisp_t *constr)
 952 {
 953     jsdisp_t *prot = NULL;
 954     dispex_prop_t *prop;
 955     HRESULT hres;
 956
 957     static const WCHAR constructorW[] = {'c','o','n','s','t','r','u','c','t','o','r',0};
 958     static const WCHAR prototypeW[] = {'p','r','o','t','o','t','y','p','e',0};
 959
 960     hres = find_prop_name_prot(constr, string_hash(prototypeW), prototypeW, &prop);
 961     if(SUCCEEDED(hres) && prop && prop->type!=PROP_DELETED) {
 962         jsexcept_t jsexcept;
 963         VARIANT var;
 964
 965         V_VT(&var) = VT_EMPTY;
 966         memset(&jsexcept, 0, sizeof(jsexcept));
 967         hres = prop_get(constr, prop, NULL, &var, &jsexcept, NULL/*FIXME*/);
 968         if(FAILED(hres)) {
 969             ERR("Could not get prototype\n");
 970             return hres;
 971         }
 972
 973         if(V_VT(&var) == VT_DISPATCH)
 974             prot = iface_to_jsdisp((IUnknown*)V_DISPATCH(&var));
 975         VariantClear(&var);
 976     }
 977
 978     hres = init_dispex(dispex, ctx, builtin_info, prot);
 979
 980     if(prot)
 981         jsdisp_release(prot);
 982     if(FAILED(hres))
 983         return hres;
 984
 985     hres = ensure_prop_name(dispex, constructorW, FALSE, 0, &prop);
 986     if(SUCCEEDED(hres)) {
 987         jsexcept_t jsexcept;
 988         VARIANT var;
 989
 990         var_set_jsdisp(&var, constr);
 991         memset(&jsexcept, 0, sizeof(jsexcept));
 992         hres = prop_put(dispex, prop, &var, &jsexcept, NULL/*FIXME*/);
 993     }
 994     if(FAILED(hres))
 995         jsdisp_release(dispex);
 996
 997     return hres;
 998 }
 999
1000 jsdisp_t *iface_to_jsdisp(IUnknown *iface)
1001 {
1002     jsdisp_t *ret;
1003     HRESULT hres;
1004
1005     hres = IUnknown_QueryInterface(iface, &IID_IDispatchJS, (void**)&ret);
1006     if(FAILED(hres))
1007         return NULL;
1008
1009     return ret;
1010 }
1011
1012 static void ensure_retval_type(VARIANT *v)
1013 {
1014     switch(V_VT(v)) {
1015     case VT_I2:
1016         V_VT(v) = VT_I4;
1017         V_I4(v) = V_I2(v);
1018     }
1019 }
1020
1021 HRESULT jsdisp_get_id(jsdisp_t *jsdisp, const WCHAR *name, DWORD flags, DISPID *id)
1022 {
1023     dispex_prop_t *prop;
1024     HRESULT hres;
1025
1026     if(flags & fdexNameEnsure)
1027         hres = ensure_prop_name(jsdisp, name, TRUE, PROPF_ENUM, &prop);
1028     else
1029         hres = find_prop_name_prot(jsdisp, string_hash(name), name, &prop);
1030     if(FAILED(hres))
1031         return hres;
1032
1033     if(prop && prop->type!=PROP_DELETED) {
1034         *id = prop_to_id(jsdisp, prop);
1035         return S_OK;
1036     }
1037
1038     TRACE("not found %s\n", debugstr_w(name));
1039     return DISP_E_UNKNOWNNAME;
1040 }
1041
1042 HRESULT jsdisp_call_value(jsdisp_t *jsthis, WORD flags, DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
1043 {
1044     vdisp_t vdisp;
1045     HRESULT hres;
1046
1047     set_jsdisp(&vdisp, jsthis);
1048     hres = jsthis->builtin_info->value_prop.invoke(jsthis->ctx, &vdisp, flags, dp, retv, ei);
1049     vdisp_release(&vdisp);
1050     return hres;
1051 }
1052
1053 HRESULT jsdisp_call(jsdisp_t *disp, DISPID id, WORD flags, DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
1054 {
1055     dispex_prop_t *prop;
1056
1057     memset(ei, 0, sizeof(*ei));
1058     if(retv)
1059         V_VT(retv) = VT_EMPTY;
1060
1061     prop = get_prop(disp, id);
1062     if(!prop)
1063         return DISP_E_MEMBERNOTFOUND;
1064
1065     return invoke_prop_func(disp, disp, prop, flags, dp, retv, ei, NULL);
1066 }
1067
1068 HRESULT jsdisp_call_name(jsdisp_t *disp, const WCHAR *name, WORD flags, DISPPARAMS *dp, VARIANT *retv,
1069         jsexcept_t *ei)
1070 {
1071     dispex_prop_t *prop;
1072     HRESULT hres;
1073
1074     hres = find_prop_name_prot(disp, string_hash(name), name, &prop);
1075     if(FAILED(hres))
1076         return hres;
1077
1078     memset(ei, 0, sizeof(*ei));
1079     if(retv)
1080         V_VT(retv) = VT_EMPTY;
1081
1082     return invoke_prop_func(disp, disp, prop, flags, dp, retv, ei, NULL);
1083 }
1084
1085 HRESULT disp_call(script_ctx_t *ctx, IDispatch *disp, DISPID id, WORD flags, DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
1086 {
1087     jsdisp_t *jsdisp;
1088     IDispatchEx *dispex;
1089     HRESULT hres;
1090
1091     jsdisp = iface_to_jsdisp((IUnknown*)disp);
1092     if(jsdisp) {
1093         if(flags & DISPATCH_PROPERTYPUT) {
1094             FIXME("disp_call(propput) on builtin object\n");
1095             return E_FAIL;
1096         }
1097
1098         hres = jsdisp_call(jsdisp, id, flags, dp, retv, ei);
1099         jsdisp_release(jsdisp);
1100         return hres;
1101     }
1102
1103     memset(ei, 0, sizeof(*ei));
1104     if(retv && arg_cnt(dp))
1105         flags |= DISPATCH_PROPERTYGET;
1106
1107     if(retv)
1108         V_VT(retv) = VT_EMPTY;
1109     hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
1110     if(SUCCEEDED(hres)) {
1111         hres = IDispatchEx_InvokeEx(dispex, id, ctx->lcid, flags, dp, retv, &ei->ei, &ctx->jscaller->IServiceProvider_iface);
1112         IDispatchEx_Release(dispex);
1113     }else {
1114         UINT err = 0;
1115
1116         if(flags == DISPATCH_CONSTRUCT) {
1117             WARN("IDispatch cannot be constructor\n");
1118             return DISP_E_MEMBERNOTFOUND;
1119         }
1120
1121         TRACE("using IDispatch\n");
1122         hres = IDispatch_Invoke(disp, id, &IID_NULL, ctx->lcid, flags, dp, retv, &ei->ei, &err);
1123     }
1124
1125     if(FAILED(hres))
1126         return hres;
1127
1128     if(retv)
1129         ensure_retval_type(retv);
1130     return S_OK;
1131 }
1132
1133 HRESULT jsdisp_propput_name(jsdisp_t *obj, const WCHAR *name, VARIANT *val, jsexcept_t *ei)
1134 {
1135     dispex_prop_t *prop;
1136     HRESULT hres;
1137
1138     hres = ensure_prop_name(obj, name, FALSE, PROPF_ENUM, &prop);
1139     if(FAILED(hres))
1140         return hres;
1141
1142     return prop_put(obj, prop, val, ei, NULL);
1143 }
1144
1145 HRESULT jsdisp_propput_const(jsdisp_t *obj, const WCHAR *name, VARIANT *val)
1146 {
1147     dispex_prop_t *prop;
1148     HRESULT hres;
1149
1150     hres = ensure_prop_name(obj, name, FALSE, PROPF_ENUM|PROPF_CONST, &prop);
1151     if(FAILED(hres))
1152         return hres;
1153
1154     return VariantCopy(&prop->u.var, val);
1155 }
1156
1157 HRESULT jsdisp_propput_idx(jsdisp_t *obj, DWORD idx, VARIANT *val, jsexcept_t *ei)
1158 {
1159     WCHAR buf[12];
1160
1161     static const WCHAR formatW[] = {'%','d',0};
1162
1163     sprintfW(buf, formatW, idx);
1164     return jsdisp_propput_name(obj, buf, val, ei);
1165 }
1166
1167 HRESULT disp_propput(script_ctx_t *ctx, IDispatch *disp, DISPID id, VARIANT *val, jsexcept_t *ei)
1168 {
1169     jsdisp_t *jsdisp;
1170     HRESULT hres;
1171
1172     jsdisp = iface_to_jsdisp((IUnknown*)disp);
1173     if(jsdisp) {
1174         dispex_prop_t *prop;
1175
1176         prop = get_prop(jsdisp, id);
1177         if(prop)
1178             hres = prop_put(jsdisp, prop, val, ei, NULL);
1179         else
1180             hres = DISP_E_MEMBERNOTFOUND;
1181
1182         jsdisp_release(jsdisp);
1183     }else {
1184         DISPID dispid = DISPID_PROPERTYPUT;
1185         DISPPARAMS dp  = {val, &dispid, 1, 1};
1186         IDispatchEx *dispex;
1187
1188         hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
1189         if(SUCCEEDED(hres)) {
1190             hres = IDispatchEx_InvokeEx(dispex, id, ctx->lcid, DISPATCH_PROPERTYPUT, &dp, NULL, &ei->ei,
1191                     &ctx->jscaller->IServiceProvider_iface);
1192             IDispatchEx_Release(dispex);
1193         }else {
1194             ULONG err = 0;
1195
1196             TRACE("using IDispatch\n");
1197             hres = IDispatch_Invoke(disp, id, &IID_NULL, ctx->lcid, DISPATCH_PROPERTYPUT, &dp, NULL, &ei->ei, &err);
1198         }
1199     }
1200
1201     return hres;
1202 }
1203
1204 HRESULT jsdisp_propget_name(jsdisp_t *obj, const WCHAR *name, VARIANT *var, jsexcept_t *ei)
1205 {
1206     DISPPARAMS dp = {NULL, NULL, 0, 0};
1207     dispex_prop_t *prop;
1208     HRESULT hres;
1209
1210     hres = find_prop_name_prot(obj, string_hash(name), name, &prop);
1211     if(FAILED(hres))
1212         return hres;
1213
1214     V_VT(var) = VT_EMPTY;
1215     if(!prop || prop->type==PROP_DELETED)
1216         return S_OK;
1217
1218     return prop_get(obj, prop, &dp, var, ei, NULL);
1219 }
1220
1221 HRESULT jsdisp_get_idx(jsdisp_t *obj, DWORD idx, VARIANT *var, jsexcept_t *ei)
1222 {
1223     WCHAR name[12];
1224     DISPPARAMS dp = {NULL, NULL, 0, 0};
1225     dispex_prop_t *prop;
1226     HRESULT hres;
1227
1228     static const WCHAR formatW[] = {'%','d',0};
1229
1230     sprintfW(name, formatW, idx);
1231
1232     hres = find_prop_name_prot(obj, string_hash(name), name, &prop);
1233     if(FAILED(hres))
1234         return hres;
1235
1236     V_VT(var) = VT_EMPTY;
1237     if(!prop || prop->type==PROP_DELETED)
1238         return DISP_E_UNKNOWNNAME;
1239
1240     return prop_get(obj, prop, &dp, var, ei, NULL);
1241 }
1242
1243 HRESULT jsdisp_propget(jsdisp_t *jsdisp, DISPID id, VARIANT *val, jsexcept_t *ei)
1244 {
1245     DISPPARAMS dp  = {NULL,NULL,0,0};
1246     dispex_prop_t *prop;
1247
1248     prop = get_prop(jsdisp, id);
1249     if(!prop)
1250         return DISP_E_MEMBERNOTFOUND;
1251
1252     V_VT(val) = VT_EMPTY;
1253     return prop_get(jsdisp, prop, &dp, val, ei, NULL);
1254 }
1255
1256 HRESULT disp_propget(script_ctx_t *ctx, IDispatch *disp, DISPID id, VARIANT *val, jsexcept_t *ei)
1257 {
1258     DISPPARAMS dp  = {NULL,NULL,0,0};
1259     IDispatchEx *dispex;
1260     jsdisp_t *jsdisp;
1261     HRESULT hres;
1262
1263     jsdisp = iface_to_jsdisp((IUnknown*)disp);
1264     if(jsdisp) {
1265         hres = jsdisp_propget(jsdisp, id, val, ei);
1266         jsdisp_release(jsdisp);
1267         return hres;
1268     }
1269
1270     hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
1271     if(SUCCEEDED(hres)) {
1272         hres = IDispatchEx_InvokeEx(dispex, id, ctx->lcid, INVOKE_PROPERTYGET, &dp, val, &ei->ei,
1273                 &ctx->jscaller->IServiceProvider_iface);
1274         IDispatchEx_Release(dispex);
1275     }else {
1276         ULONG err = 0;
1277
1278         TRACE("using IDispatch\n");
1279         hres = IDispatch_Invoke(disp, id, &IID_NULL, ctx->lcid, INVOKE_PROPERTYGET, &dp, val, &ei->ei, &err);
1280     }
1281     if(FAILED(hres))
1282         return hres;
1283
1284     ensure_retval_type(val);
1285     return S_OK;
1286 }
1287
1288 HRESULT jsdisp_delete_idx(jsdisp_t *obj, DWORD idx)
1289 {
1290     static const WCHAR formatW[] = {'%','d',0};
1291     WCHAR buf[12];
1292     dispex_prop_t *prop;
1293     HRESULT hres;
1294
1295     sprintfW(buf, formatW, idx);
1296
1297     hres = find_prop_name(obj, string_hash(buf), buf, &prop);
1298     if(FAILED(hres) || !prop)
1299         return hres;
1300
1301     return delete_prop(prop);
1302 }
1303
1304 VARIANT_BOOL jsdisp_is_own_prop(jsdisp_t *obj, BSTR name)
1305 {
1306     dispex_prop_t *prop;
1307     HRESULT hres;
1308
1309     hres = find_prop_name(obj, string_hash(name), name, &prop);
1310     if(FAILED(hres))
1311         return VARIANT_FALSE;
1312     else if(!prop)
1313         return VARIANT_FALSE;
1314
1315     return prop->type==PROP_VARIANT ? VARIANT_TRUE : VARIANT_FALSE;
1316 }