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 && !need_conversion; i++) {
 346         switch(V_VT(get_arg(dp, i))) {
 347         case VT_I2:
 348         case VT_INT:
 349             need_conversion = TRUE;
 350             break;
 351         }
 352     }
 353
 354     if(!need_conversion)
 355         return S_OK;
 356
 357     if(ret->cArgs > 6) {
 358         ret->rgvarg = heap_alloc(ret->cArgs * sizeof(VARIANT));
 359         if(!ret->rgvarg)
 360             return E_OUTOFMEMORY;
 361     }else {
 362         ret->rgvarg = buf;
 363     }
 364
 365     for(i = 0; i < ret->cArgs; i++) {
 366         s = get_arg(dp, i);
 367         d = get_arg(ret, i);
 368         switch(V_VT(s)) {
 369         case VT_I2:
 370             V_VT(d) = VT_I4;
 371             V_I4(d) = V_I2(s);
 372             break;
 373         case VT_INT:
 374             V_VT(d) = VT_I4;
 375             V_I4(d) = V_INT(s);
 376             break;
 377         default:
 378             *d = *s;
 379         }
 380     }
 381
 382     return S_OK;
 383 }
 384
 385 static HRESULT invoke_prop_func(jsdisp_t *This, jsdisp_t *jsthis, dispex_prop_t *prop, WORD flags,
 386         DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
 387 {
 388     HRESULT hres;
 389
 390     switch(prop->type) {
 391     case PROP_BUILTIN: {
 392         DISPPARAMS params;
 393         VARIANT buf[6];
 394
 395         if(flags == DISPATCH_CONSTRUCT && (prop->flags & PROPF_METHOD)) {
 396             WARN("%s is not a constructor\n", debugstr_w(prop->name));
 397             return E_INVALIDARG;
 398         }
 399
 400         hres = convert_params(dp, buf, &params);
 401         if(FAILED(hres))
 402             return hres;
 403
 404         if(prop->name || jsthis->builtin_info->class != JSCLASS_FUNCTION) {
 405             vdisp_t vthis;
 406
 407             set_jsdisp(&vthis, jsthis);
 408             hres = prop->u.p->invoke(This->ctx, &vthis, flags, &params, retv, ei);
 409             vdisp_release(&vthis);
 410         }else {
 411             /* Function object calls are special case */
 412             hres = Function_invoke(This, flags, &params, retv, ei);
 413         }
 414         if(params.rgvarg != buf && params.rgvarg != dp->rgvarg)
 415             heap_free(params.rgvarg);
 416         return hres;
 417     }
 418     case PROP_PROTREF:
 419         return invoke_prop_func(This->prototype, jsthis, This->prototype->props+prop->u.ref, flags, dp, retv, ei, caller);
 420     case PROP_VARIANT: {
 421         DISPPARAMS new_dp;
 422
 423         if(V_VT(&prop->u.var) != VT_DISPATCH) {
 424             FIXME("invoke vt %d\n", V_VT(&prop->u.var));
 425             return E_FAIL;
 426         }
 427
 428         TRACE("call %s %p\n", debugstr_w(prop->name), V_DISPATCH(&prop->u.var));
 429
 430         hres = set_this(&new_dp, dp, to_disp(jsthis));
 431         if(FAILED(hres))
 432             return hres;
 433
 434         hres = disp_call(This->ctx, V_DISPATCH(&prop->u.var), DISPID_VALUE, flags, &new_dp, retv, ei);
 435
 436         if(new_dp.rgvarg != dp->rgvarg) {
 437             heap_free(new_dp.rgvarg);
 438             if(new_dp.cNamedArgs > 1)
 439                 heap_free(new_dp.rgdispidNamedArgs);
 440         }
 441
 442         return hres;
 443     }
 444     default:
 445         ERR("type %d\n", prop->type);
 446     }
 447
 448     return E_FAIL;
 449 }
 450
 451 static HRESULT prop_get(jsdisp_t *This, dispex_prop_t *prop, DISPPARAMS *dp,
 452         VARIANT *retv, jsexcept_t *ei, IServiceProvider *caller)
 453 {
 454     HRESULT hres;
 455
 456     switch(prop->type) {
 457     case PROP_BUILTIN:
 458         if(prop->u.p->flags & PROPF_METHOD) {
 459             jsdisp_t *obj;
 460             hres = create_builtin_function(This->ctx, prop->u.p->invoke, prop->u.p->name, NULL,
 461                     prop->u.p->flags, NULL, &obj);
 462             if(FAILED(hres))
 463                 break;
 464
 465             prop->type = PROP_VARIANT;
 466             var_set_jsdisp(&prop->u.var, obj);
 467             hres = VariantCopy(retv, &prop->u.var);
 468         }else {
 469             vdisp_t vthis;
 470
 471             set_jsdisp(&vthis, This);
 472             hres = prop->u.p->invoke(This->ctx, &vthis, DISPATCH_PROPERTYGET, dp, retv, ei);
 473             vdisp_release(&vthis);
 474         }
 475         break;
 476     case PROP_PROTREF:
 477         hres = prop_get(This->prototype, This->prototype->props+prop->u.ref, dp, retv, ei, caller);
 478         break;
 479     case PROP_VARIANT:
 480         hres = VariantCopy(retv, &prop->u.var);
 481         break;
 482     default:
 483         ERR("type %d\n", prop->type);
 484         return E_FAIL;
 485     }
 486
 487     if(FAILED(hres)) {
 488         TRACE("fail %08x\n", hres);
 489         return hres;
 490     }
 491
 492     TRACE("%s ret %s\n", debugstr_w(prop->name), debugstr_variant(retv));
 493     return hres;
 494 }
 495
 496 static HRESULT prop_put(jsdisp_t *This, dispex_prop_t *prop, VARIANT *val,
 497         jsexcept_t *ei, IServiceProvider *caller)
 498 {
 499     HRESULT hres;
 500
 501     if(prop->flags & PROPF_CONST)
 502         return S_OK;
 503
 504     switch(prop->type) {
 505     case PROP_BUILTIN:
 506         if(!(prop->flags & PROPF_METHOD)) {
 507             DISPPARAMS dp = {val, NULL, 1, 0};
 508             vdisp_t vthis;
 509
 510             set_jsdisp(&vthis, This);
 511             hres = prop->u.p->invoke(This->ctx, &vthis, DISPATCH_PROPERTYPUT, &dp, NULL, ei);
 512             vdisp_release(&vthis);
 513             return hres;
 514         }
 515     case PROP_PROTREF:
 516         prop->type = PROP_VARIANT;
 517         prop->flags = PROPF_ENUM;
 518         V_VT(&prop->u.var) = VT_EMPTY;
 519         break;
 520     case PROP_VARIANT:
 521         VariantClear(&prop->u.var);
 522         break;
 523     default:
 524         ERR("type %d\n", prop->type);
 525         return E_FAIL;
 526     }
 527
 528     hres = VariantCopy(&prop->u.var, val);
 529     if(FAILED(hres))
 530         return hres;
 531
 532     if(This->builtin_info->on_put)
 533         This->builtin_info->on_put(This, prop->name);
 534
 535     TRACE("%s = %s\n", debugstr_w(prop->name), debugstr_variant(val));
 536     return S_OK;
 537 }
 538
 539 static HRESULT fill_protrefs(jsdisp_t *This)
 540 {
 541     dispex_prop_t *iter, *prop;
 542     HRESULT hres;
 543
 544     if(!This->prototype)
 545         return S_OK;
 546
 547     fill_protrefs(This->prototype);
 548
 549     for(iter = This->prototype->props; iter < This->prototype->props+This->prototype->prop_cnt; iter++) {
 550         if(!iter->name)
 551             continue;
 552         hres = find_prop_name(This, iter->hash, iter->name, &prop);
 553         if(FAILED(hres))
 554             return hres;
 555         if(!prop || prop->type==PROP_DELETED) {
 556             if(prop) {
 557                 prop->type = PROP_PROTREF;
 558                 prop->flags = 0;
 559                 prop->u.ref = iter - This->prototype->props;
 560             }else {
 561                 prop = alloc_protref(This, iter->name, iter - This->prototype->props);
 562                 if(!prop)
 563                     return E_OUTOFMEMORY;
 564             }
 565         }
 566     }
 567
 568     return S_OK;
 569 }
 570
 571 static inline jsdisp_t *impl_from_IDispatchEx(IDispatchEx *iface)
 572 {
 573     return CONTAINING_RECORD(iface, jsdisp_t, IDispatchEx_iface);
 574 }
 575
 576 static HRESULT WINAPI DispatchEx_QueryInterface(IDispatchEx *iface, REFIID riid, void **ppv)
 577 {
 578     jsdisp_t *This = impl_from_IDispatchEx(iface);
 579
 580     if(IsEqualGUID(&IID_IUnknown, riid)) {
 581         TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
 582         *ppv = &This->IDispatchEx_iface;
 583     }else if(IsEqualGUID(&IID_IDispatch, riid)) {
 584         TRACE("(%p)->(IID_IDispatch %p)\n", This, ppv);
 585         *ppv = &This->IDispatchEx_iface;
 586     }else if(IsEqualGUID(&IID_IDispatchEx, riid)) {
 587         TRACE("(%p)->(IID_IDispatchEx %p)\n", This, ppv);
 588         *ppv = &This->IDispatchEx_iface;
 589     }else if(IsEqualGUID(&IID_IDispatchJS, riid)) {
 590         TRACE("(%p)->(IID_IDispatchJS %p)\n", This, ppv);
 591         jsdisp_addref(This);
 592         *ppv = This;
 593         return S_OK;
 594     }else {
 595         WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
 596         *ppv = NULL;
 597         return E_NOINTERFACE;
 598     }
 599
 600     IUnknown_AddRef((IUnknown*)*ppv);
 601     return S_OK;
 602 }
 603
 604 static ULONG WINAPI DispatchEx_AddRef(IDispatchEx *iface)
 605 {
 606     jsdisp_t *This = impl_from_IDispatchEx(iface);
 607     LONG ref = InterlockedIncrement(&This->ref);
 608
 609     TRACE("(%p) ref=%d\n", This, ref);
 610
 611     return ref;
 612 }
 613
 614 static ULONG WINAPI DispatchEx_Release(IDispatchEx *iface)
 615 {
 616     jsdisp_t *This = impl_from_IDispatchEx(iface);
 617     LONG ref = InterlockedDecrement(&This->ref);
 618
 619     TRACE("(%p) ref=%d\n", This, ref);
 620
 621     if(!ref) {
 622         dispex_prop_t *prop;
 623
 624         for(prop = This->props; prop < This->props+This->prop_cnt; prop++) {
 625             if(prop->type == PROP_VARIANT)
 626                 VariantClear(&prop->u.var);
 627             heap_free(prop->name);
 628         }
 629         heap_free(This->props);
 630         script_release(This->ctx);
 631         if(This->prototype)
 632             jsdisp_release(This->prototype);
 633
 634         if(This->builtin_info->destructor)
 635             This->builtin_info->destructor(This);
 636         else
 637             heap_free(This);
 638     }
 639
 640     return ref;
 641 }
 642
 643 static HRESULT WINAPI DispatchEx_GetTypeInfoCount(IDispatchEx *iface, UINT *pctinfo)
 644 {
 645     jsdisp_t *This = impl_from_IDispatchEx(iface);
 646
 647     TRACE("(%p)->(%p)\n", This, pctinfo);
 648
 649     *pctinfo = 1;
 650     return S_OK;
 651 }
 652
 653 static HRESULT WINAPI DispatchEx_GetTypeInfo(IDispatchEx *iface, UINT iTInfo, LCID lcid,
 654                                               ITypeInfo **ppTInfo)
 655 {
 656     jsdisp_t *This = impl_from_IDispatchEx(iface);
 657     FIXME("(%p)->(%u %u %p)\n", This, iTInfo, lcid, ppTInfo);
 658     return E_NOTIMPL;
 659 }
 660
 661 static HRESULT WINAPI DispatchEx_GetIDsOfNames(IDispatchEx *iface, REFIID riid,
 662                                                 LPOLESTR *rgszNames, UINT cNames, LCID lcid,
 663                                                 DISPID *rgDispId)
 664 {
 665     jsdisp_t *This = impl_from_IDispatchEx(iface);
 666     UINT i;
 667     HRESULT hres;
 668
 669     TRACE("(%p)->(%s %p %u %u %p)\n", This, debugstr_guid(riid), rgszNames, cNames,
 670           lcid, rgDispId);
 671
 672     for(i=0; i < cNames; i++) {
 673         hres = IDispatchEx_GetDispID(&This->IDispatchEx_iface, rgszNames[i], 0, rgDispId+i);
 674         if(FAILED(hres))
 675             return hres;
 676     }
 677
 678     return S_OK;
 679 }
 680
 681 static HRESULT WINAPI DispatchEx_Invoke(IDispatchEx *iface, DISPID dispIdMember,
 682                                         REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams,
 683                             VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr)
 684 {
 685     jsdisp_t *This = impl_from_IDispatchEx(iface);
 686
 687     TRACE("(%p)->(%d %s %d %d %p %p %p %p)\n", This, dispIdMember, debugstr_guid(riid),
 688           lcid, wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
 689
 690     return IDispatchEx_InvokeEx(&This->IDispatchEx_iface, dispIdMember, lcid, wFlags,
 691             pDispParams, pVarResult, pExcepInfo, NULL);
 692 }
 693
 694 static HRESULT WINAPI DispatchEx_GetDispID(IDispatchEx *iface, BSTR bstrName, DWORD grfdex, DISPID *pid)
 695 {
 696     jsdisp_t *This = impl_from_IDispatchEx(iface);
 697
 698     TRACE("(%p)->(%s %x %p)\n", This, debugstr_w(bstrName), grfdex, pid);
 699
 700     if(grfdex & ~(fdexNameCaseSensitive|fdexNameEnsure|fdexNameImplicit|FDEX_VERSION_MASK)) {
 701         FIXME("Unsupported grfdex %x\n", grfdex);
 702         return E_NOTIMPL;
 703     }
 704
 705     return jsdisp_get_id(This, bstrName, grfdex, pid);
 706 }
 707
 708 static HRESULT WINAPI DispatchEx_InvokeEx(IDispatchEx *iface, DISPID id, LCID lcid, WORD wFlags, DISPPARAMS *pdp,
 709         VARIANT *pvarRes, EXCEPINFO *pei, IServiceProvider *pspCaller)
 710 {
 711     jsdisp_t *This = impl_from_IDispatchEx(iface);
 712     dispex_prop_t *prop;
 713     jsexcept_t jsexcept;
 714     HRESULT hres;
 715
 716     TRACE("(%p)->(%x %x %x %p %p %p %p)\n", This, id, lcid, wFlags, pdp, pvarRes, pei, pspCaller);
 717
 718     if(pvarRes)
 719         V_VT(pvarRes) = VT_EMPTY;
 720
 721     prop = get_prop(This, id);
 722     if(!prop || prop->type == PROP_DELETED) {
 723         TRACE("invalid id\n");
 724         return DISP_E_MEMBERNOTFOUND;
 725     }
 726
 727     memset(&jsexcept, 0, sizeof(jsexcept));
 728
 729     switch(wFlags) {
 730     case DISPATCH_METHOD|DISPATCH_PROPERTYGET:
 731         wFlags = DISPATCH_METHOD;
 732         /* fall through */
 733     case DISPATCH_METHOD:
 734     case DISPATCH_CONSTRUCT:
 735         hres = invoke_prop_func(This, This, prop, wFlags, pdp, pvarRes, &jsexcept, pspCaller);
 736         break;
 737     case DISPATCH_PROPERTYGET:
 738         hres = prop_get(This, prop, pdp, pvarRes, &jsexcept, pspCaller);
 739         break;
 740     case DISPATCH_PROPERTYPUT: {
 741         DWORD i;
 742
 743         for(i=0; i < pdp->cNamedArgs; i++) {
 744             if(pdp->rgdispidNamedArgs[i] == DISPID_PROPERTYPUT)
 745                 break;
 746         }
 747
 748         if(i == pdp->cNamedArgs) {
 749             TRACE("no value to set\n");
 750             return DISP_E_PARAMNOTOPTIONAL;
 751         }
 752
 753         hres = prop_put(This, prop, pdp->rgvarg+i, &jsexcept, pspCaller);
 754         break;
 755     }
 756     default:
 757         FIXME("Unimplemented flags %x\n", wFlags);
 758         return E_INVALIDARG;
 759     }
 760
 761     if(pei)
 762         *pei = jsexcept.ei;
 763
 764     return hres;
 765 }
 766
 767 static HRESULT delete_prop(dispex_prop_t *prop)
 768 {
 769     if(prop->type == PROP_VARIANT) {
 770         VariantClear(&prop->u.var);
 771         prop->type = PROP_DELETED;
 772     }
 773     return S_OK;
 774 }
 775
 776 static HRESULT WINAPI DispatchEx_DeleteMemberByName(IDispatchEx *iface, BSTR bstrName, DWORD grfdex)
 777 {
 778     jsdisp_t *This = impl_from_IDispatchEx(iface);
 779     dispex_prop_t *prop;
 780     HRESULT hres;
 781
 782     TRACE("(%p)->(%s %x)\n", This, debugstr_w(bstrName), grfdex);
 783
 784     if(grfdex & ~(fdexNameCaseSensitive|fdexNameEnsure|fdexNameImplicit|FDEX_VERSION_MASK))
 785         FIXME("Unsupported grfdex %x\n", grfdex);
 786
 787     hres = find_prop_name(This, string_hash(bstrName), bstrName, &prop);
 788     if(FAILED(hres))
 789         return hres;
 790     if(!prop) {
 791         TRACE("not found\n");
 792         return S_OK;
 793     }
 794
 795     return delete_prop(prop);
 796 }
 797
 798 static HRESULT WINAPI DispatchEx_DeleteMemberByDispID(IDispatchEx *iface, DISPID id)
 799 {
 800     jsdisp_t *This = impl_from_IDispatchEx(iface);
 801     dispex_prop_t *prop;
 802
 803     TRACE("(%p)->(%x)\n", This, id);
 804
 805     prop = get_prop(This, id);
 806     if(!prop) {
 807         WARN("invalid id\n");
 808         return DISP_E_MEMBERNOTFOUND;
 809     }
 810
 811     return delete_prop(prop);
 812 }
 813
 814 static HRESULT WINAPI DispatchEx_GetMemberProperties(IDispatchEx *iface, DISPID id, DWORD grfdexFetch, DWORD *pgrfdex)
 815 {
 816     jsdisp_t *This = impl_from_IDispatchEx(iface);
 817     FIXME("(%p)->(%x %x %p)\n", This, id, grfdexFetch, pgrfdex);
 818     return E_NOTIMPL;
 819 }
 820
 821 static HRESULT WINAPI DispatchEx_GetMemberName(IDispatchEx *iface, DISPID id, BSTR *pbstrName)
 822 {
 823     jsdisp_t *This = impl_from_IDispatchEx(iface);
 824     dispex_prop_t *prop;
 825
 826     TRACE("(%p)->(%x %p)\n", This, id, pbstrName);
 827
 828     prop = get_prop(This, id);
 829     if(!prop || !prop->name || prop->type == PROP_DELETED)
 830         return DISP_E_MEMBERNOTFOUND;
 831
 832     *pbstrName = SysAllocString(prop->name);
 833     if(!*pbstrName)
 834         return E_OUTOFMEMORY;
 835
 836     return S_OK;
 837 }
 838
 839 static HRESULT WINAPI DispatchEx_GetNextDispID(IDispatchEx *iface, DWORD grfdex, DISPID id, DISPID *pid)
 840 {
 841     jsdisp_t *This = impl_from_IDispatchEx(iface);
 842     dispex_prop_t *iter;
 843     HRESULT hres;
 844
 845     TRACE("(%p)->(%x %x %p)\n", This, grfdex, id, pid);
 846
 847     if(id == DISPID_STARTENUM) {
 848         hres = fill_protrefs(This);
 849         if(FAILED(hres))
 850             return hres;
 851     }
 852
 853     if(id+1>=0 && id+1<This->prop_cnt) {
 854         iter = &This->props[id+1];
 855     }else {
 856         *pid = DISPID_STARTENUM;
 857         return S_FALSE;
 858     }
 859
 860     while(iter < This->props + This->prop_cnt) {
 861         if(iter->name && (get_flags(This, iter) & PROPF_ENUM) && iter->type!=PROP_DELETED) {
 862             *pid = prop_to_id(This, iter);
 863             return S_OK;
 864         }
 865         iter++;
 866     }
 867
 868     *pid = DISPID_STARTENUM;
 869     return S_FALSE;
 870 }
 871
 872 static HRESULT WINAPI DispatchEx_GetNameSpaceParent(IDispatchEx *iface, IUnknown **ppunk)
 873 {
 874     jsdisp_t *This = impl_from_IDispatchEx(iface);
 875     FIXME("(%p)->(%p)\n", This, ppunk);
 876     return E_NOTIMPL;
 877 }
 878
 879 static IDispatchExVtbl DispatchExVtbl = {
 880     DispatchEx_QueryInterface,
 881     DispatchEx_AddRef,
 882     DispatchEx_Release,
 883     DispatchEx_GetTypeInfoCount,
 884     DispatchEx_GetTypeInfo,
 885     DispatchEx_GetIDsOfNames,
 886     DispatchEx_Invoke,
 887     DispatchEx_GetDispID,
 888     DispatchEx_InvokeEx,
 889     DispatchEx_DeleteMemberByName,
 890     DispatchEx_DeleteMemberByDispID,
 891     DispatchEx_GetMemberProperties,
 892     DispatchEx_GetMemberName,
 893     DispatchEx_GetNextDispID,
 894     DispatchEx_GetNameSpaceParent
 895 };
 896
 897 jsdisp_t *as_jsdisp(IDispatch *disp)
 898 {
 899     assert(disp->lpVtbl == (IDispatchVtbl*)&DispatchExVtbl);
 900     return impl_from_IDispatchEx((IDispatchEx*)disp);
 901 }
 902
 903 jsdisp_t *to_jsdisp(IDispatch *disp)
 904 {
 905     return disp->lpVtbl == (IDispatchVtbl*)&DispatchExVtbl ? impl_from_IDispatchEx((IDispatchEx*)disp) : NULL;
 906 }
 907
 908 HRESULT init_dispex(jsdisp_t *dispex, script_ctx_t *ctx, const builtin_info_t *builtin_info, jsdisp_t *prototype)
 909 {
 910     TRACE("%p (%p)\n", dispex, prototype);
 911
 912     dispex->IDispatchEx_iface.lpVtbl = &DispatchExVtbl;
 913     dispex->ref = 1;
 914     dispex->builtin_info = builtin_info;
 915
 916     dispex->props = heap_alloc_zero(sizeof(dispex_prop_t)*(dispex->buf_size=4));
 917     if(!dispex->props)
 918         return E_OUTOFMEMORY;
 919
 920     dispex->prototype = prototype;
 921     if(prototype)
 922         jsdisp_addref(prototype);
 923
 924     dispex->prop_cnt = 1;
 925     if(builtin_info->value_prop.invoke) {
 926         dispex->props[0].type = PROP_BUILTIN;
 927         dispex->props[0].u.p = &builtin_info->value_prop;
 928     }else {
 929         dispex->props[0].type = PROP_DELETED;
 930     }
 931
 932     script_addref(ctx);
 933     dispex->ctx = ctx;
 934
 935     return S_OK;
 936 }
 937
 938 static const builtin_info_t dispex_info = {
 939     JSCLASS_NONE,
 940     {NULL, NULL, 0},
 941     0, NULL,
 942     NULL,
 943     NULL
 944 };
 945
 946 HRESULT create_dispex(script_ctx_t *ctx, const builtin_info_t *builtin_info, jsdisp_t *prototype, jsdisp_t **dispex)
 947 {
 948     jsdisp_t *ret;
 949     HRESULT hres;
 950
 951     ret = heap_alloc_zero(sizeof(jsdisp_t));
 952     if(!ret)
 953         return E_OUTOFMEMORY;
 954
 955     hres = init_dispex(ret, ctx, builtin_info ? builtin_info : &dispex_info, prototype);
 956     if(FAILED(hres))
 957         return hres;
 958
 959     *dispex = ret;
 960     return S_OK;
 961 }
 962
 963 HRESULT init_dispex_from_constr(jsdisp_t *dispex, script_ctx_t *ctx, const builtin_info_t *builtin_info, jsdisp_t *constr)
 964 {
 965     jsdisp_t *prot = NULL;
 966     dispex_prop_t *prop;
 967     HRESULT hres;
 968
 969     static const WCHAR constructorW[] = {'c','o','n','s','t','r','u','c','t','o','r',0};
 970     static const WCHAR prototypeW[] = {'p','r','o','t','o','t','y','p','e',0};
 971
 972     hres = find_prop_name_prot(constr, string_hash(prototypeW), prototypeW, &prop);
 973     if(SUCCEEDED(hres) && prop && prop->type!=PROP_DELETED) {
 974         jsexcept_t jsexcept;
 975         VARIANT var;
 976
 977         V_VT(&var) = VT_EMPTY;
 978         memset(&jsexcept, 0, sizeof(jsexcept));
 979         hres = prop_get(constr, prop, NULL, &var, &jsexcept, NULL/*FIXME*/);
 980         if(FAILED(hres)) {
 981             ERR("Could not get prototype\n");
 982             return hres;
 983         }
 984
 985         if(V_VT(&var) == VT_DISPATCH)
 986             prot = iface_to_jsdisp((IUnknown*)V_DISPATCH(&var));
 987         VariantClear(&var);
 988     }
 989
 990     hres = init_dispex(dispex, ctx, builtin_info, prot);
 991
 992     if(prot)
 993         jsdisp_release(prot);
 994     if(FAILED(hres))
 995         return hres;
 996
 997     hres = ensure_prop_name(dispex, constructorW, FALSE, 0, &prop);
 998     if(SUCCEEDED(hres)) {
 999         jsexcept_t jsexcept;
1000         VARIANT var;
1001
1002         var_set_jsdisp(&var, constr);
1003         memset(&jsexcept, 0, sizeof(jsexcept));
1004         hres = prop_put(dispex, prop, &var, &jsexcept, NULL/*FIXME*/);
1005     }
1006     if(FAILED(hres))
1007         jsdisp_release(dispex);
1008
1009     return hres;
1010 }
1011
1012 jsdisp_t *iface_to_jsdisp(IUnknown *iface)
1013 {
1014     jsdisp_t *ret;
1015     HRESULT hres;
1016
1017     hres = IUnknown_QueryInterface(iface, &IID_IDispatchJS, (void**)&ret);
1018     if(FAILED(hres))
1019         return NULL;
1020
1021     return ret;
1022 }
1023
1024 static void ensure_retval_type(VARIANT *v)
1025 {
1026     switch(V_VT(v)) {
1027     case VT_I2:
1028         V_VT(v) = VT_I4;
1029         V_I4(v) = V_I2(v);
1030         break;
1031     case VT_INT:
1032         V_VT(v) = VT_I4;
1033         V_I4(v) = V_INT(v);
1034     }
1035 }
1036
1037 HRESULT jsdisp_get_id(jsdisp_t *jsdisp, const WCHAR *name, DWORD flags, DISPID *id)
1038 {
1039     dispex_prop_t *prop;
1040     HRESULT hres;
1041
1042     if(flags & fdexNameEnsure)
1043         hres = ensure_prop_name(jsdisp, name, TRUE, PROPF_ENUM, &prop);
1044     else
1045         hres = find_prop_name_prot(jsdisp, string_hash(name), name, &prop);
1046     if(FAILED(hres))
1047         return hres;
1048
1049     if(prop && prop->type!=PROP_DELETED) {
1050         *id = prop_to_id(jsdisp, prop);
1051         return S_OK;
1052     }
1053
1054     TRACE("not found %s\n", debugstr_w(name));
1055     return DISP_E_UNKNOWNNAME;
1056 }
1057
1058 HRESULT jsdisp_call_value(jsdisp_t *jsthis, WORD flags, DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
1059 {
1060     vdisp_t vdisp;
1061     HRESULT hres;
1062
1063     set_jsdisp(&vdisp, jsthis);
1064     hres = jsthis->builtin_info->value_prop.invoke(jsthis->ctx, &vdisp, flags, dp, retv, ei);
1065     vdisp_release(&vdisp);
1066     return hres;
1067 }
1068
1069 HRESULT jsdisp_call(jsdisp_t *disp, DISPID id, WORD flags, DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
1070 {
1071     dispex_prop_t *prop;
1072
1073     memset(ei, 0, sizeof(*ei));
1074     if(retv)
1075         V_VT(retv) = VT_EMPTY;
1076
1077     prop = get_prop(disp, id);
1078     if(!prop)
1079         return DISP_E_MEMBERNOTFOUND;
1080
1081     return invoke_prop_func(disp, disp, prop, flags, dp, retv, ei, NULL);
1082 }
1083
1084 HRESULT jsdisp_call_name(jsdisp_t *disp, const WCHAR *name, WORD flags, DISPPARAMS *dp, VARIANT *retv,
1085         jsexcept_t *ei)
1086 {
1087     dispex_prop_t *prop;
1088     HRESULT hres;
1089
1090     hres = find_prop_name_prot(disp, string_hash(name), name, &prop);
1091     if(FAILED(hres))
1092         return hres;
1093
1094     memset(ei, 0, sizeof(*ei));
1095     if(retv)
1096         V_VT(retv) = VT_EMPTY;
1097
1098     return invoke_prop_func(disp, disp, prop, flags, dp, retv, ei, NULL);
1099 }
1100
1101 HRESULT disp_call(script_ctx_t *ctx, IDispatch *disp, DISPID id, WORD flags, DISPPARAMS *dp, VARIANT *retv, jsexcept_t *ei)
1102 {
1103     jsdisp_t *jsdisp;
1104     IDispatchEx *dispex;
1105     HRESULT hres;
1106
1107     jsdisp = iface_to_jsdisp((IUnknown*)disp);
1108     if(jsdisp) {
1109         if(flags & DISPATCH_PROPERTYPUT) {
1110             FIXME("disp_call(propput) on builtin object\n");
1111             return E_FAIL;
1112         }
1113
1114         hres = jsdisp_call(jsdisp, id, flags, dp, retv, ei);
1115         jsdisp_release(jsdisp);
1116         return hres;
1117     }
1118
1119     memset(ei, 0, sizeof(*ei));
1120     if(retv && arg_cnt(dp))
1121         flags |= DISPATCH_PROPERTYGET;
1122
1123     if(retv)
1124         V_VT(retv) = VT_EMPTY;
1125     hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
1126     if(SUCCEEDED(hres)) {
1127         hres = IDispatchEx_InvokeEx(dispex, id, ctx->lcid, flags, dp, retv, &ei->ei, &ctx->jscaller->IServiceProvider_iface);
1128         IDispatchEx_Release(dispex);
1129     }else {
1130         UINT err = 0;
1131
1132         if(flags == DISPATCH_CONSTRUCT) {
1133             WARN("IDispatch cannot be constructor\n");
1134             return DISP_E_MEMBERNOTFOUND;
1135         }
1136
1137         TRACE("using IDispatch\n");
1138         hres = IDispatch_Invoke(disp, id, &IID_NULL, ctx->lcid, flags, dp, retv, &ei->ei, &err);
1139     }
1140
1141     if(FAILED(hres))
1142         return hres;
1143
1144     if(retv)
1145         ensure_retval_type(retv);
1146     return S_OK;
1147 }
1148
1149 HRESULT jsdisp_propput_name(jsdisp_t *obj, const WCHAR *name, VARIANT *val, jsexcept_t *ei)
1150 {
1151     dispex_prop_t *prop;
1152     HRESULT hres;
1153
1154     hres = ensure_prop_name(obj, name, FALSE, PROPF_ENUM, &prop);
1155     if(FAILED(hres))
1156         return hres;
1157
1158     return prop_put(obj, prop, val, ei, NULL);
1159 }
1160
1161 HRESULT jsdisp_propput_const(jsdisp_t *obj, const WCHAR *name, VARIANT *val)
1162 {
1163     dispex_prop_t *prop;
1164     HRESULT hres;
1165
1166     hres = ensure_prop_name(obj, name, FALSE, PROPF_ENUM|PROPF_CONST, &prop);
1167     if(FAILED(hres))
1168         return hres;
1169
1170     return VariantCopy(&prop->u.var, val);
1171 }
1172
1173 HRESULT jsdisp_propput_idx(jsdisp_t *obj, DWORD idx, VARIANT *val, jsexcept_t *ei)
1174 {
1175     WCHAR buf[12];
1176
1177     static const WCHAR formatW[] = {'%','d',0};
1178
1179     sprintfW(buf, formatW, idx);
1180     return jsdisp_propput_name(obj, buf, val, ei);
1181 }
1182
1183 HRESULT disp_propput(script_ctx_t *ctx, IDispatch *disp, DISPID id, VARIANT *val, jsexcept_t *ei)
1184 {
1185     jsdisp_t *jsdisp;
1186     HRESULT hres;
1187
1188     jsdisp = iface_to_jsdisp((IUnknown*)disp);
1189     if(jsdisp) {
1190         dispex_prop_t *prop;
1191
1192         prop = get_prop(jsdisp, id);
1193         if(prop)
1194             hres = prop_put(jsdisp, prop, val, ei, NULL);
1195         else
1196             hres = DISP_E_MEMBERNOTFOUND;
1197
1198         jsdisp_release(jsdisp);
1199     }else {
1200         DISPID dispid = DISPID_PROPERTYPUT;
1201         DISPPARAMS dp  = {val, &dispid, 1, 1};
1202         IDispatchEx *dispex;
1203
1204         hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
1205         if(SUCCEEDED(hres)) {
1206             hres = IDispatchEx_InvokeEx(dispex, id, ctx->lcid, DISPATCH_PROPERTYPUT, &dp, NULL, &ei->ei,
1207                     &ctx->jscaller->IServiceProvider_iface);
1208             IDispatchEx_Release(dispex);
1209         }else {
1210             ULONG err = 0;
1211
1212             TRACE("using IDispatch\n");
1213             hres = IDispatch_Invoke(disp, id, &IID_NULL, ctx->lcid, DISPATCH_PROPERTYPUT, &dp, NULL, &ei->ei, &err);
1214         }
1215     }
1216
1217     return hres;
1218 }
1219
1220 HRESULT jsdisp_propget_name(jsdisp_t *obj, const WCHAR *name, VARIANT *var, jsexcept_t *ei)
1221 {
1222     DISPPARAMS dp = {NULL, NULL, 0, 0};
1223     dispex_prop_t *prop;
1224     HRESULT hres;
1225
1226     hres = find_prop_name_prot(obj, string_hash(name), name, &prop);
1227     if(FAILED(hres))
1228         return hres;
1229
1230     V_VT(var) = VT_EMPTY;
1231     if(!prop || prop->type==PROP_DELETED)
1232         return S_OK;
1233
1234     return prop_get(obj, prop, &dp, var, ei, NULL);
1235 }
1236
1237 HRESULT jsdisp_get_idx(jsdisp_t *obj, DWORD idx, VARIANT *var, jsexcept_t *ei)
1238 {
1239     WCHAR name[12];
1240     DISPPARAMS dp = {NULL, NULL, 0, 0};
1241     dispex_prop_t *prop;
1242     HRESULT hres;
1243
1244     static const WCHAR formatW[] = {'%','d',0};
1245
1246     sprintfW(name, formatW, idx);
1247
1248     hres = find_prop_name_prot(obj, string_hash(name), name, &prop);
1249     if(FAILED(hres))
1250         return hres;
1251
1252     V_VT(var) = VT_EMPTY;
1253     if(!prop || prop->type==PROP_DELETED)
1254         return DISP_E_UNKNOWNNAME;
1255
1256     return prop_get(obj, prop, &dp, var, ei, NULL);
1257 }
1258
1259 HRESULT jsdisp_propget(jsdisp_t *jsdisp, DISPID id, VARIANT *val, jsexcept_t *ei)
1260 {
1261     DISPPARAMS dp  = {NULL,NULL,0,0};
1262     dispex_prop_t *prop;
1263
1264     prop = get_prop(jsdisp, id);
1265     if(!prop)
1266         return DISP_E_MEMBERNOTFOUND;
1267
1268     V_VT(val) = VT_EMPTY;
1269     return prop_get(jsdisp, prop, &dp, val, ei, NULL);
1270 }
1271
1272 HRESULT disp_propget(script_ctx_t *ctx, IDispatch *disp, DISPID id, VARIANT *val, jsexcept_t *ei)
1273 {
1274     DISPPARAMS dp  = {NULL,NULL,0,0};
1275     IDispatchEx *dispex;
1276     jsdisp_t *jsdisp;
1277     HRESULT hres;
1278
1279     jsdisp = iface_to_jsdisp((IUnknown*)disp);
1280     if(jsdisp) {
1281         hres = jsdisp_propget(jsdisp, id, val, ei);
1282         jsdisp_release(jsdisp);
1283         return hres;
1284     }
1285
1286     hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
1287     if(SUCCEEDED(hres)) {
1288         hres = IDispatchEx_InvokeEx(dispex, id, ctx->lcid, INVOKE_PROPERTYGET, &dp, val, &ei->ei,
1289                 &ctx->jscaller->IServiceProvider_iface);
1290         IDispatchEx_Release(dispex);
1291     }else {
1292         ULONG err = 0;
1293
1294         TRACE("using IDispatch\n");
1295         hres = IDispatch_Invoke(disp, id, &IID_NULL, ctx->lcid, INVOKE_PROPERTYGET, &dp, val, &ei->ei, &err);
1296     }
1297     if(FAILED(hres))
1298         return hres;
1299
1300     ensure_retval_type(val);
1301     return S_OK;
1302 }
1303
1304 HRESULT jsdisp_delete_idx(jsdisp_t *obj, DWORD idx)
1305 {
1306     static const WCHAR formatW[] = {'%','d',0};
1307     WCHAR buf[12];
1308     dispex_prop_t *prop;
1309     HRESULT hres;
1310
1311     sprintfW(buf, formatW, idx);
1312
1313     hres = find_prop_name(obj, string_hash(buf), buf, &prop);
1314     if(FAILED(hres) || !prop)
1315         return hres;
1316
1317     return delete_prop(prop);
1318 }
1319
1320 VARIANT_BOOL jsdisp_is_own_prop(jsdisp_t *obj, BSTR name)
1321 {
1322     dispex_prop_t *prop;
1323     HRESULT hres;
1324
1325     hres = find_prop_name(obj, string_hash(name), name, &prop);
1326     if(FAILED(hres))
1327         return VARIANT_FALSE;
1328     else if(!prop)
1329         return VARIANT_FALSE;
1330
1331     return prop->type==PROP_VARIANT ? VARIANT_TRUE : VARIANT_FALSE;
1332 }