dlls/jscript/engine.c

   1 /*
   2  * Copyright 2008,2011 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include <math.h>
  23 #include <assert.h>
  24
  25 #include "jscript.h"
  26 #include "engine.h"
  27
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  31
  32 static const WCHAR booleanW[] = {'b','o','o','l','e','a','n',0};
  33 static const WCHAR functionW[] = {'f','u','n','c','t','i','o','n',0};
  34 static const WCHAR numberW[] = {'n','u','m','b','e','r',0};
  35 static const WCHAR objectW[] = {'o','b','j','e','c','t',0};
  36 static const WCHAR stringW[] = {'s','t','r','i','n','g',0};
  37 static const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
  38 static const WCHAR unknownW[] = {'u','n','k','n','o','w','n',0};
  39
  40 struct _except_frame_t {
  41     unsigned stack_top;
  42     scope_chain_t *scope;
  43     unsigned catch_off;
  44     BSTR ident;
  45
  46     except_frame_t *next;
  47 };
  48
  49 static HRESULT stack_push(exec_ctx_t *ctx, VARIANT *v)
  50 {
  51     if(!ctx->stack_size) {
  52         ctx->stack = heap_alloc(16*sizeof(VARIANT));
  53         if(!ctx->stack)
  54             return E_OUTOFMEMORY;
  55         ctx->stack_size = 16;
  56     }else if(ctx->stack_size == ctx->top) {
  57         VARIANT *new_stack;
  58
  59         new_stack = heap_realloc(ctx->stack, ctx->stack_size*2*sizeof(VARIANT));
  60         if(!new_stack) {
  61             VariantClear(v);
  62             return E_OUTOFMEMORY;
  63         }
  64
  65         ctx->stack = new_stack;
  66         ctx->stack_size *= 2;
  67     }
  68
  69     ctx->stack[ctx->top++] = *v;
  70     return S_OK;
  71 }
  72
  73 static HRESULT stack_push_bool(exec_ctx_t *ctx, BOOL b)
  74 {
  75     VARIANT v;
  76
  77     V_VT(&v) = VT_BOOL;
  78     V_BOOL(&v) = b ? VARIANT_TRUE : VARIANT_FALSE;
  79     return stack_push(ctx, &v);
  80 }
  81
  82 static inline HRESULT stack_push_number(exec_ctx_t *ctx, double number)
  83 {
  84     VARIANT v;
  85
  86     num_set_val(&v, number);
  87     return stack_push(ctx, &v);
  88 }
  89
  90 static inline HRESULT stack_push_int(exec_ctx_t *ctx, INT n)
  91 {
  92     VARIANT v;
  93
  94     V_VT(&v) = VT_I4;
  95     V_I4(&v) = n;
  96     return stack_push(ctx, &v);
  97 }
  98
  99 static inline HRESULT stack_push_string(exec_ctx_t *ctx, const WCHAR *str)
 100 {
 101     VARIANT v;
 102
 103     V_VT(&v) = VT_BSTR;
 104     V_BSTR(&v) = SysAllocString(str);
 105     return V_BSTR(&v) ? stack_push(ctx, &v) : E_OUTOFMEMORY;
 106 }
 107
 108 static HRESULT stack_push_objid(exec_ctx_t *ctx, IDispatch *disp, DISPID id)
 109 {
 110     VARIANT v;
 111     HRESULT hres;
 112
 113     V_VT(&v) = VT_DISPATCH;
 114     V_DISPATCH(&v) = disp;
 115     hres = stack_push(ctx, &v);
 116     if(FAILED(hres))
 117         return hres;
 118
 119     V_VT(&v) = VT_INT;
 120     V_INT(&v) = id;
 121     return stack_push(ctx, &v);
 122 }
 123
 124 static inline VARIANT *stack_top(exec_ctx_t *ctx)
 125 {
 126     assert(ctx->top);
 127     return ctx->stack + ctx->top-1;
 128 }
 129
 130 static inline VARIANT *stack_topn(exec_ctx_t *ctx, unsigned n)
 131 {
 132     assert(ctx->top > n);
 133     return ctx->stack + ctx->top-1-n;
 134 }
 135
 136 static inline VARIANT *stack_pop(exec_ctx_t *ctx)
 137 {
 138     assert(ctx->top);
 139     return ctx->stack + --ctx->top;
 140 }
 141
 142 static void stack_popn(exec_ctx_t *ctx, unsigned n)
 143 {
 144     while(n--)
 145         VariantClear(stack_pop(ctx));
 146 }
 147
 148 static HRESULT stack_pop_number(exec_ctx_t *ctx, double *r)
 149 {
 150     VARIANT *v;
 151     HRESULT hres;
 152
 153     v = stack_pop(ctx);
 154     hres = to_number(ctx->script, v, ctx->ei, r);
 155     VariantClear(v);
 156     return hres;
 157 }
 158
 159 static HRESULT stack_pop_object(exec_ctx_t *ctx, IDispatch **r)
 160 {
 161     VARIANT *v;
 162     HRESULT hres;
 163
 164     v = stack_pop(ctx);
 165     if(V_VT(v) == VT_DISPATCH) {
 166         if(!V_DISPATCH(v))
 167             return throw_type_error(ctx->script, ctx->ei, JS_E_OBJECT_REQUIRED, NULL);
 168         *r = V_DISPATCH(v);
 169         return S_OK;
 170     }
 171
 172     hres = to_object(ctx->script, v, r);
 173     VariantClear(v);
 174     return hres;
 175 }
 176
 177 static inline HRESULT stack_pop_int(exec_ctx_t *ctx, INT *r)
 178 {
 179     return to_int32(ctx->script, stack_pop(ctx), ctx->ei, r);
 180 }
 181
 182 static inline HRESULT stack_pop_uint(exec_ctx_t *ctx, DWORD *r)
 183 {
 184     return to_uint32(ctx->script, stack_pop(ctx), ctx->ei, r);
 185 }
 186
 187 static inline IDispatch *stack_pop_objid(exec_ctx_t *ctx, DISPID *id)
 188 {
 189     assert(V_VT(stack_top(ctx)) == VT_INT && V_VT(stack_topn(ctx, 1)) == VT_DISPATCH);
 190
 191     *id = V_INT(stack_pop(ctx));
 192     return V_DISPATCH(stack_pop(ctx));
 193 }
 194
 195 static inline IDispatch *stack_topn_objid(exec_ctx_t *ctx, unsigned n, DISPID *id)
 196 {
 197     assert(V_VT(stack_topn(ctx, n)) == VT_INT && V_VT(stack_topn(ctx, n+1)) == VT_DISPATCH);
 198
 199     *id = V_INT(stack_topn(ctx, n));
 200     return V_DISPATCH(stack_topn(ctx, n+1));
 201 }
 202
 203 static void exprval_release(exprval_t *val)
 204 {
 205     switch(val->type) {
 206     case EXPRVAL_VARIANT:
 207         if(V_VT(&val->u.var) != VT_EMPTY)
 208             VariantClear(&val->u.var);
 209         return;
 210     case EXPRVAL_IDREF:
 211         if(val->u.idref.disp)
 212             IDispatch_Release(val->u.idref.disp);
 213         return;
 214     case EXPRVAL_INVALID:
 215         return;
 216     }
 217 }
 218
 219 /* ECMA-262 3rd Edition    8.7.1 */
 220 static HRESULT exprval_value(script_ctx_t *ctx, exprval_t *val, jsexcept_t *ei, VARIANT *ret)
 221 {
 222     V_VT(ret) = VT_EMPTY;
 223
 224     switch(val->type) {
 225     case EXPRVAL_VARIANT:
 226         return VariantCopy(ret, &val->u.var);
 227     case EXPRVAL_IDREF:
 228         if(!val->u.idref.disp) {
 229             FIXME("throw ReferenceError\n");
 230             return E_FAIL;
 231         }
 232
 233         return disp_propget(ctx, val->u.idref.disp, val->u.idref.id, ret, ei);
 234     case EXPRVAL_INVALID:
 235         assert(0);
 236     }
 237
 238     ERR("type %d\n", val->type);
 239     return E_FAIL;
 240 }
 241
 242 static HRESULT exprval_to_value(script_ctx_t *ctx, exprval_t *val, jsexcept_t *ei, VARIANT *ret)
 243 {
 244     if(val->type == EXPRVAL_VARIANT) {
 245         *ret = val->u.var;
 246         V_VT(&val->u.var) = VT_EMPTY;
 247         return S_OK;
 248     }
 249
 250     return exprval_value(ctx, val, ei, ret);
 251 }
 252
 253 static void exprval_set_idref(exprval_t *val, IDispatch *disp, DISPID id)
 254 {
 255     val->type = EXPRVAL_IDREF;
 256     val->u.idref.disp = disp;
 257     val->u.idref.id = id;
 258
 259     if(disp)
 260         IDispatch_AddRef(disp);
 261 }
 262
 263 HRESULT scope_push(scope_chain_t *scope, jsdisp_t *obj, scope_chain_t **ret)
 264 {
 265     scope_chain_t *new_scope;
 266
 267     new_scope = heap_alloc(sizeof(scope_chain_t));
 268     if(!new_scope)
 269         return E_OUTOFMEMORY;
 270
 271     new_scope->ref = 1;
 272
 273     jsdisp_addref(obj);
 274     new_scope->obj = obj;
 275
 276     if(scope) {
 277         scope_addref(scope);
 278         new_scope->next = scope;
 279     }else {
 280         new_scope->next = NULL;
 281     }
 282
 283     *ret = new_scope;
 284     return S_OK;
 285 }
 286
 287 static void scope_pop(scope_chain_t **scope)
 288 {
 289     scope_chain_t *tmp;
 290
 291     tmp = *scope;
 292     *scope = tmp->next;
 293     scope_release(tmp);
 294 }
 295
 296 void scope_release(scope_chain_t *scope)
 297 {
 298     if(--scope->ref)
 299         return;
 300
 301     if(scope->next)
 302         scope_release(scope->next);
 303
 304     jsdisp_release(scope->obj);
 305     heap_free(scope);
 306 }
 307
 308 HRESULT create_exec_ctx(script_ctx_t *script_ctx, IDispatch *this_obj, jsdisp_t *var_disp,
 309         scope_chain_t *scope, BOOL is_global, exec_ctx_t **ret)
 310 {
 311     exec_ctx_t *ctx;
 312
 313     ctx = heap_alloc_zero(sizeof(exec_ctx_t));
 314     if(!ctx)
 315         return E_OUTOFMEMORY;
 316
 317     ctx->ref = 1;
 318     ctx->is_global = is_global;
 319
 320     if(this_obj)
 321         ctx->this_obj = this_obj;
 322     else if(script_ctx->host_global)
 323         ctx->this_obj = script_ctx->host_global;
 324     else
 325         ctx->this_obj = to_disp(script_ctx->global);
 326     IDispatch_AddRef(ctx->this_obj);
 327
 328     jsdisp_addref(var_disp);
 329     ctx->var_disp = var_disp;
 330
 331     script_addref(script_ctx);
 332     ctx->script = script_ctx;
 333
 334     if(scope) {
 335         scope_addref(scope);
 336         ctx->scope_chain = scope;
 337     }
 338
 339     *ret = ctx;
 340     return S_OK;
 341 }
 342
 343 void exec_release(exec_ctx_t *ctx)
 344 {
 345     if(--ctx->ref)
 346         return;
 347
 348     if(ctx->scope_chain)
 349         scope_release(ctx->scope_chain);
 350     if(ctx->var_disp)
 351         jsdisp_release(ctx->var_disp);
 352     if(ctx->this_obj)
 353         IDispatch_Release(ctx->this_obj);
 354     if(ctx->script)
 355         script_release(ctx->script);
 356     heap_free(ctx->stack);
 357     heap_free(ctx);
 358 }
 359
 360 static HRESULT disp_get_id(script_ctx_t *ctx, IDispatch *disp, BSTR name, DWORD flags, DISPID *id)
 361 {
 362     IDispatchEx *dispex;
 363     HRESULT hres;
 364
 365     hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
 366     if(FAILED(hres)) {
 367         TRACE("using IDispatch\n");
 368
 369         *id = 0;
 370         return IDispatch_GetIDsOfNames(disp, &IID_NULL, &name, 1, 0, id);
 371     }
 372
 373     *id = 0;
 374     hres = IDispatchEx_GetDispID(dispex, name, make_grfdex(ctx, flags|fdexNameCaseSensitive), id);
 375     IDispatchEx_Release(dispex);
 376     return hres;
 377 }
 378
 379 static inline BOOL is_null(const VARIANT *v)
 380 {
 381     return V_VT(v) == VT_NULL || (V_VT(v) == VT_DISPATCH && !V_DISPATCH(v));
 382 }
 383
 384 static HRESULT disp_cmp(IDispatch *disp1, IDispatch *disp2, BOOL *ret)
 385 {
 386     IObjectIdentity *identity;
 387     IUnknown *unk1, *unk2;
 388     HRESULT hres;
 389
 390     if(disp1 == disp2) {
 391         *ret = TRUE;
 392         return S_OK;
 393     }
 394
 395     if(!disp1 || !disp2) {
 396         *ret = FALSE;
 397         return S_OK;
 398     }
 399
 400     hres = IDispatch_QueryInterface(disp1, &IID_IUnknown, (void**)&unk1);
 401     if(FAILED(hres))
 402         return hres;
 403
 404     hres = IDispatch_QueryInterface(disp2, &IID_IUnknown, (void**)&unk2);
 405     if(FAILED(hres)) {
 406         IUnknown_Release(unk1);
 407         return hres;
 408     }
 409
 410     if(unk1 == unk2) {
 411         *ret = TRUE;
 412     }else {
 413         hres = IUnknown_QueryInterface(unk1, &IID_IObjectIdentity, (void**)&identity);
 414         if(SUCCEEDED(hres)) {
 415             hres = IObjectIdentity_IsEqualObject(identity, unk2);
 416             IObjectIdentity_Release(identity);
 417             *ret = hres == S_OK;
 418         }else {
 419             *ret = FALSE;
 420         }
 421     }
 422
 423     IUnknown_Release(unk1);
 424     IUnknown_Release(unk2);
 425     return S_OK;
 426 }
 427
 428 /* ECMA-262 3rd Edition    11.9.6 */
 429 static HRESULT equal2_values(VARIANT *lval, VARIANT *rval, BOOL *ret)
 430 {
 431     TRACE("\n");
 432
 433     if(V_VT(lval) != V_VT(rval)) {
 434         if(is_num_vt(V_VT(lval)) && is_num_vt(V_VT(rval)))
 435             *ret = num_val(lval) == num_val(rval);
 436         else if(is_null(lval))
 437             *ret = is_null(rval);
 438         else
 439             *ret = FALSE;
 440         return S_OK;
 441     }
 442
 443     switch(V_VT(lval)) {
 444     case VT_EMPTY:
 445     case VT_NULL:
 446         *ret = VARIANT_TRUE;
 447         break;
 448     case VT_I4:
 449         *ret = V_I4(lval) == V_I4(rval);
 450         break;
 451     case VT_R8:
 452         *ret = V_R8(lval) == V_R8(rval);
 453         break;
 454     case VT_BSTR:
 455         if(!V_BSTR(lval))
 456             *ret = SysStringLen(V_BSTR(rval))?FALSE:TRUE;
 457         else if(!V_BSTR(rval))
 458             *ret = SysStringLen(V_BSTR(lval))?FALSE:TRUE;
 459         else
 460             *ret = !strcmpW(V_BSTR(lval), V_BSTR(rval));
 461         break;
 462     case VT_DISPATCH:
 463         return disp_cmp(V_DISPATCH(lval), V_DISPATCH(rval), ret);
 464     case VT_BOOL:
 465         *ret = !V_BOOL(lval) == !V_BOOL(rval);
 466         break;
 467     default:
 468         FIXME("unimplemented vt %d\n", V_VT(lval));
 469         return E_NOTIMPL;
 470     }
 471
 472     return S_OK;
 473 }
 474
 475 static BOOL lookup_global_members(script_ctx_t *ctx, BSTR identifier, exprval_t *ret)
 476 {
 477     named_item_t *item;
 478     DISPID id;
 479     HRESULT hres;
 480
 481     for(item = ctx->named_items; item; item = item->next) {
 482         if(item->flags & SCRIPTITEM_GLOBALMEMBERS) {
 483             hres = disp_get_id(ctx, item->disp, identifier, 0, &id);
 484             if(SUCCEEDED(hres)) {
 485                 if(ret)
 486                     exprval_set_idref(ret, item->disp, id);
 487                 return TRUE;
 488             }
 489         }
 490     }
 491
 492     return FALSE;
 493 }
 494
 495 /* ECMA-262 3rd Edition    10.1.4 */
 496 static HRESULT identifier_eval(script_ctx_t *ctx, BSTR identifier, exprval_t *ret)
 497 {
 498     scope_chain_t *scope;
 499     named_item_t *item;
 500     DISPID id = 0;
 501     HRESULT hres;
 502
 503     TRACE("%s\n", debugstr_w(identifier));
 504
 505     for(scope = ctx->exec_ctx->scope_chain; scope; scope = scope->next) {
 506         hres = jsdisp_get_id(scope->obj, identifier, 0, &id);
 507         if(SUCCEEDED(hres)) {
 508             exprval_set_idref(ret, to_disp(scope->obj), id);
 509             return S_OK;
 510         }
 511     }
 512
 513     hres = jsdisp_get_id(ctx->global, identifier, 0, &id);
 514     if(SUCCEEDED(hres)) {
 515         exprval_set_idref(ret, to_disp(ctx->global), id);
 516         return S_OK;
 517     }
 518
 519     for(item = ctx->named_items; item; item = item->next) {
 520         if((item->flags & SCRIPTITEM_ISVISIBLE) && !strcmpW(item->name, identifier)) {
 521             if(!item->disp) {
 522                 IUnknown *unk;
 523
 524                 if(!ctx->site)
 525                     break;
 526
 527                 hres = IActiveScriptSite_GetItemInfo(ctx->site, identifier,
 528                                                      SCRIPTINFO_IUNKNOWN, &unk, NULL);
 529                 if(FAILED(hres)) {
 530                     WARN("GetItemInfo failed: %08x\n", hres);
 531                     break;
 532                 }
 533
 534                 hres = IUnknown_QueryInterface(unk, &IID_IDispatch, (void**)&item->disp);
 535                 IUnknown_Release(unk);
 536                 if(FAILED(hres)) {
 537                     WARN("object does not implement IDispatch\n");
 538                     break;
 539                 }
 540             }
 541
 542             ret->type = EXPRVAL_VARIANT;
 543             V_VT(&ret->u.var) = VT_DISPATCH;
 544             V_DISPATCH(&ret->u.var) = item->disp;
 545             IDispatch_AddRef(item->disp);
 546             return S_OK;
 547         }
 548     }
 549
 550     if(lookup_global_members(ctx, identifier, ret))
 551         return S_OK;
 552
 553     ret->type = EXPRVAL_INVALID;
 554     return S_OK;
 555 }
 556
 557 static inline BSTR get_op_bstr(exec_ctx_t *ctx, int i){
 558     return ctx->code->instrs[ctx->ip].u.arg[i].bstr;
 559 }
 560
 561 static inline unsigned get_op_uint(exec_ctx_t *ctx, int i){
 562     return ctx->code->instrs[ctx->ip].u.arg[i].uint;
 563 }
 564
 565 static inline unsigned get_op_int(exec_ctx_t *ctx, int i){
 566     return ctx->code->instrs[ctx->ip].u.arg[i].lng;
 567 }
 568
 569 static inline const WCHAR *get_op_str(exec_ctx_t *ctx, int i){
 570     return ctx->code->instrs[ctx->ip].u.arg[i].str;
 571 }
 572
 573 static inline double get_op_double(exec_ctx_t *ctx){
 574     return ctx->code->instrs[ctx->ip].u.dbl;
 575 }
 576
 577 /* ECMA-262 3rd Edition    12.2 */
 578 static HRESULT interp_var_set(exec_ctx_t *ctx)
 579 {
 580     const BSTR name = get_op_bstr(ctx, 0);
 581     VARIANT *v;
 582     HRESULT hres;
 583
 584     TRACE("%s\n", debugstr_w(name));
 585
 586     v = stack_pop(ctx);
 587     hres = jsdisp_propput_name(ctx->var_disp, name, v, ctx->ei);
 588     VariantClear(v);
 589     return hres;
 590 }
 591
 592 /* ECMA-262 3rd Edition    12.6.4 */
 593 static HRESULT interp_forin(exec_ctx_t *ctx)
 594 {
 595     const HRESULT arg = get_op_uint(ctx, 0);
 596     IDispatch *var_obj, *obj = NULL;
 597     IDispatchEx *dispex;
 598     DISPID id, var_id;
 599     BSTR name = NULL;
 600     VARIANT *val;
 601     HRESULT hres;
 602
 603     TRACE("\n");
 604
 605     val = stack_pop(ctx);
 606
 607     assert(V_VT(stack_top(ctx)) == VT_I4);
 608     id = V_I4(stack_top(ctx));
 609
 610     var_obj = stack_topn_objid(ctx, 1, &var_id);
 611     if(!var_obj) {
 612         FIXME("invalid ref\n");
 613         VariantClear(val);
 614         return E_FAIL;
 615     }
 616
 617     if(V_VT(stack_topn(ctx, 3)) == VT_DISPATCH)
 618         obj = V_DISPATCH(stack_topn(ctx, 3));
 619
 620     if(obj) {
 621         hres = IDispatch_QueryInterface(obj, &IID_IDispatchEx, (void**)&dispex);
 622         if(SUCCEEDED(hres)) {
 623             hres = IDispatchEx_GetNextDispID(dispex, fdexEnumDefault, id, &id);
 624             if(hres == S_OK)
 625                 hres = IDispatchEx_GetMemberName(dispex, id, &name);
 626             IDispatchEx_Release(dispex);
 627             if(FAILED(hres)) {
 628                 VariantClear(val);
 629                 return hres;
 630             }
 631         }else {
 632             TRACE("No IDispatchEx\n");
 633         }
 634     }
 635
 636     if(name) {
 637         VARIANT v;
 638
 639         VariantClear(val);
 640
 641         V_I4(stack_top(ctx)) = id;
 642
 643         V_VT(&v) = VT_BSTR;
 644         V_BSTR(&v) = name;
 645         hres = disp_propput(ctx->script, var_obj, var_id, &v, ctx->ei);
 646         SysFreeString(name);
 647         if(FAILED(hres))
 648             return hres;
 649
 650         ctx->ip++;
 651     }else {
 652         stack_popn(ctx, 4);
 653         ctx->ip = arg;
 654         return stack_push(ctx, val);
 655     }
 656     return S_OK;
 657 }
 658
 659 /* ECMA-262 3rd Edition    12.10 */
 660 static HRESULT interp_push_scope(exec_ctx_t *ctx)
 661 {
 662     IDispatch *disp;
 663     jsdisp_t *obj;
 664     VARIANT *v;
 665     HRESULT hres;
 666
 667     TRACE("\n");
 668
 669     v = stack_pop(ctx);
 670     hres = to_object(ctx->script, v, &disp);
 671     VariantClear(v);
 672     if(FAILED(hres))
 673         return hres;
 674
 675     obj = to_jsdisp(disp);
 676     if(!obj) {
 677         IDispatch_Release(disp);
 678         FIXME("disp is not jsdisp\n");
 679         return E_NOTIMPL;
 680     }
 681
 682     hres = scope_push(ctx->scope_chain, obj, &ctx->scope_chain);
 683     jsdisp_release(obj);
 684     return hres;
 685 }
 686
 687 /* ECMA-262 3rd Edition    12.10 */
 688 static HRESULT interp_pop_scope(exec_ctx_t *ctx)
 689 {
 690     TRACE("\n");
 691
 692     scope_pop(&ctx->scope_chain);
 693     return S_OK;
 694 }
 695
 696 /* ECMA-262 3rd Edition    12.13 */
 697 static HRESULT interp_case(exec_ctx_t *ctx)
 698 {
 699     const unsigned arg = get_op_uint(ctx, 0);
 700     VARIANT *v;
 701     BOOL b;
 702     HRESULT hres;
 703
 704     TRACE("\n");
 705
 706     v = stack_pop(ctx);
 707     hres = equal2_values(stack_top(ctx), v, &b);
 708     VariantClear(v);
 709     if(FAILED(hres))
 710         return hres;
 711
 712     if(b) {
 713         stack_popn(ctx, 1);
 714         ctx->ip = arg;
 715     }else {
 716         ctx->ip++;
 717     }
 718     return S_OK;
 719 }
 720
 721 /* ECMA-262 3rd Edition    12.13 */
 722 static HRESULT interp_throw(exec_ctx_t *ctx)
 723 {
 724     TRACE("\n");
 725
 726     ctx->ei->var = *stack_pop(ctx);
 727     return DISP_E_EXCEPTION;
 728 }
 729
 730 static HRESULT interp_throw_ref(exec_ctx_t *ctx)
 731 {
 732     const HRESULT arg = get_op_uint(ctx, 0);
 733
 734     TRACE("%08x\n", arg);
 735
 736     return throw_reference_error(ctx->script, ctx->ei, arg, NULL);
 737 }
 738
 739 static HRESULT interp_throw_type(exec_ctx_t *ctx)
 740 {
 741     const HRESULT hres = get_op_uint(ctx, 0);
 742     const WCHAR *str = get_op_str(ctx, 1);
 743
 744     TRACE("%08x %s\n", hres, debugstr_w(str));
 745
 746     return throw_type_error(ctx->script, ctx->ei, hres, str);
 747 }
 748
 749 /* ECMA-262 3rd Edition    12.14 */
 750 static HRESULT interp_push_except(exec_ctx_t *ctx)
 751 {
 752     const unsigned arg1 = get_op_uint(ctx, 0);
 753     const BSTR arg2 = get_op_bstr(ctx, 1);
 754     except_frame_t *except;
 755     unsigned stack_top;
 756
 757     TRACE("\n");
 758
 759     stack_top = ctx->top;
 760
 761     if(!arg2) {
 762         HRESULT hres;
 763
 764         hres = stack_push_bool(ctx, TRUE);
 765         if(FAILED(hres))
 766             return hres;
 767         hres = stack_push_bool(ctx, TRUE);
 768         if(FAILED(hres))
 769             return hres;
 770     }
 771
 772     except = heap_alloc(sizeof(*except));
 773     if(!except)
 774         return E_OUTOFMEMORY;
 775
 776     except->stack_top = stack_top;
 777     except->scope = ctx->scope_chain;
 778     except->catch_off = arg1;
 779     except->ident = arg2;
 780     except->next = ctx->except_frame;
 781     ctx->except_frame = except;
 782     return S_OK;
 783 }
 784
 785 /* ECMA-262 3rd Edition    12.14 */
 786 static HRESULT interp_pop_except(exec_ctx_t *ctx)
 787 {
 788     except_frame_t *except;
 789
 790     TRACE("\n");
 791
 792     except = ctx->except_frame;
 793     assert(except != NULL);
 794
 795     ctx->except_frame = except->next;
 796     heap_free(except);
 797     return S_OK;
 798 }
 799
 800 /* ECMA-262 3rd Edition    12.14 */
 801 static HRESULT interp_end_finally(exec_ctx_t *ctx)
 802 {
 803     VARIANT *v;
 804
 805     TRACE("\n");
 806
 807     v = stack_pop(ctx);
 808
 809     assert(V_VT(stack_top(ctx)) == VT_BOOL);
 810     if(!V_BOOL(stack_top(ctx))) {
 811         TRACE("passing exception\n");
 812
 813         VariantClear(v);
 814         stack_popn(ctx, 1);
 815         ctx->ei->var = *stack_pop(ctx);
 816         return DISP_E_EXCEPTION;
 817     }
 818
 819     stack_popn(ctx, 2);
 820     return stack_push(ctx, v);
 821 }
 822
 823 /* ECMA-262 3rd Edition    13 */
 824 static HRESULT interp_func(exec_ctx_t *ctx)
 825 {
 826     unsigned func_idx = get_op_uint(ctx, 0);
 827     jsdisp_t *dispex;
 828     VARIANT v;
 829     HRESULT hres;
 830
 831     TRACE("%d\n", func_idx);
 832
 833     hres = create_source_function(ctx->script, ctx->code, ctx->func_code->funcs+func_idx,
 834             ctx->scope_chain, &dispex);
 835     if(FAILED(hres))
 836         return hres;
 837
 838     var_set_jsdisp(&v, dispex);
 839     return stack_push(ctx, &v);
 840 }
 841
 842 /* ECMA-262 3rd Edition    11.2.1 */
 843 static HRESULT interp_array(exec_ctx_t *ctx)
 844 {
 845     VARIANT v, *namev;
 846     IDispatch *obj;
 847     DISPID id;
 848     BSTR name;
 849     HRESULT hres;
 850
 851     TRACE("\n");
 852
 853     namev = stack_pop(ctx);
 854
 855     hres = stack_pop_object(ctx, &obj);
 856     if(FAILED(hres)) {
 857         VariantClear(namev);
 858         return hres;
 859     }
 860
 861     hres = to_string(ctx->script, namev, ctx->ei, &name);
 862     VariantClear(namev);
 863     if(FAILED(hres)) {
 864         IDispatch_Release(obj);
 865         return hres;
 866     }
 867
 868     hres = disp_get_id(ctx->script, obj, name, 0, &id);
 869     SysFreeString(name);
 870     if(SUCCEEDED(hres)) {
 871         hres = disp_propget(ctx->script, obj, id, &v, ctx->ei);
 872     }else if(hres == DISP_E_UNKNOWNNAME) {
 873         V_VT(&v) = VT_EMPTY;
 874         hres = S_OK;
 875     }
 876     IDispatch_Release(obj);
 877     if(FAILED(hres))
 878         return hres;
 879
 880     return stack_push(ctx, &v);
 881 }
 882
 883 /* ECMA-262 3rd Edition    11.2.1 */
 884 static HRESULT interp_member(exec_ctx_t *ctx)
 885 {
 886     const BSTR arg = get_op_bstr(ctx, 0);
 887     IDispatch *obj;
 888     VARIANT v;
 889     DISPID id;
 890     HRESULT hres;
 891
 892     TRACE("\n");
 893
 894     hres = stack_pop_object(ctx, &obj);
 895     if(FAILED(hres))
 896         return hres;
 897
 898     hres = disp_get_id(ctx->script, obj, arg, 0, &id);
 899     if(SUCCEEDED(hres)) {
 900         V_VT(&v) = VT_EMPTY;
 901         hres = disp_propget(ctx->script, obj, id, &v, ctx->ei);
 902     }else if(hres == DISP_E_UNKNOWNNAME) {
 903         V_VT(&v) = VT_EMPTY;
 904         hres = S_OK;
 905     }
 906     IDispatch_Release(obj);
 907     if(FAILED(hres))
 908         return hres;
 909
 910     return stack_push(ctx, &v);
 911 }
 912
 913 /* ECMA-262 3rd Edition    11.2.1 */
 914 static HRESULT interp_memberid(exec_ctx_t *ctx)
 915 {
 916     const unsigned arg = get_op_uint(ctx, 0);
 917     VARIANT *objv, *namev;
 918     IDispatch *obj;
 919     BSTR name;
 920     DISPID id;
 921     HRESULT hres;
 922
 923     TRACE("%x\n", arg);
 924
 925     namev = stack_pop(ctx);
 926     objv = stack_pop(ctx);
 927
 928     hres = to_object(ctx->script, objv, &obj);
 929     VariantClear(objv);
 930     if(SUCCEEDED(hres)) {
 931         hres = to_string(ctx->script, namev, ctx->ei, &name);
 932         if(FAILED(hres))
 933             IDispatch_Release(obj);
 934     }
 935     VariantClear(namev);
 936     if(FAILED(hres))
 937         return hres;
 938
 939     hres = disp_get_id(ctx->script, obj, name, arg, &id);
 940     SysFreeString(name);
 941     if(FAILED(hres)) {
 942         IDispatch_Release(obj);
 943         if(hres == DISP_E_UNKNOWNNAME && !(arg & fdexNameEnsure)) {
 944             obj = NULL;
 945             id = JS_E_INVALID_PROPERTY;
 946         }else {
 947             return hres;
 948         }
 949     }
 950
 951     return stack_push_objid(ctx, obj, id);
 952 }
 953
 954 /* ECMA-262 3rd Edition    11.2.1 */
 955 static HRESULT interp_refval(exec_ctx_t *ctx)
 956 {
 957     IDispatch *disp;
 958     VARIANT v;
 959     DISPID id;
 960     HRESULT hres;
 961
 962     TRACE("\n");
 963
 964     disp = stack_topn_objid(ctx, 0, &id);
 965     if(!disp)
 966         return throw_reference_error(ctx->script, ctx->ei, JS_E_ILLEGAL_ASSIGN, NULL);
 967
 968     hres = disp_propget(ctx->script, disp, id, &v, ctx->ei);
 969     if(FAILED(hres))
 970         return hres;
 971
 972     return stack_push(ctx, &v);
 973 }
 974
 975 static void jsstack_to_dp(exec_ctx_t *ctx, unsigned arg_cnt, DISPPARAMS *dp)
 976 {
 977     VARIANT tmp;
 978     unsigned i;
 979
 980     dp->cArgs = arg_cnt;
 981     dp->rgdispidNamedArgs = NULL;
 982     dp->cNamedArgs = 0;
 983
 984     assert(ctx->top >= arg_cnt);
 985
 986     for(i=1; i*2 <= arg_cnt; i++) {
 987         tmp = ctx->stack[ctx->top-i];
 988         ctx->stack[ctx->top-i] = ctx->stack[ctx->top-arg_cnt+i-1];
 989         ctx->stack[ctx->top-arg_cnt+i-1] = tmp;
 990     }
 991
 992     dp->rgvarg = ctx->stack + ctx->top-arg_cnt;
 993 }
 994
 995 /* ECMA-262 3rd Edition    11.2.2 */
 996 static HRESULT interp_new(exec_ctx_t *ctx)
 997 {
 998     const unsigned arg = get_op_uint(ctx, 0);
 999     VARIANT *constr, v;
1000     DISPPARAMS dp;
1001     HRESULT hres;
1002
1003     TRACE("%d\n", arg);
1004
1005     constr = stack_topn(ctx, arg);
1006
1007     /* NOTE: Should use to_object here */
1008
1009     if(V_VT(constr) == VT_NULL)
1010         return throw_type_error(ctx->script, ctx->ei, JS_E_OBJECT_EXPECTED, NULL);
1011     else if(V_VT(constr) != VT_DISPATCH)
1012         return throw_type_error(ctx->script, ctx->ei, JS_E_INVALID_ACTION, NULL);
1013     else if(!V_DISPATCH(constr))
1014         return throw_type_error(ctx->script, ctx->ei, JS_E_INVALID_PROPERTY, NULL);
1015
1016     jsstack_to_dp(ctx, arg, &dp);
1017     hres = disp_call_value(ctx->script, V_DISPATCH(constr), NULL, DISPATCH_CONSTRUCT, &dp, &v, ctx->ei);
1018     if(FAILED(hres))
1019         return hres;
1020
1021     stack_popn(ctx, arg+1);
1022     return stack_push(ctx, &v);
1023 }
1024
1025 /* ECMA-262 3rd Edition    11.2.3 */
1026 static HRESULT interp_call(exec_ctx_t *ctx)
1027 {
1028     const unsigned argn = get_op_uint(ctx, 0);
1029     const int do_ret = get_op_int(ctx, 1);
1030     VARIANT v, *objv;
1031     DISPPARAMS dp;
1032     HRESULT hres;
1033
1034     TRACE("%d %d\n", argn, do_ret);
1035
1036     objv = stack_topn(ctx, argn);
1037     if(V_VT(objv) != VT_DISPATCH)
1038         return throw_type_error(ctx->script, ctx->ei, JS_E_INVALID_PROPERTY, NULL);
1039
1040     jsstack_to_dp(ctx, argn, &dp);
1041     hres = disp_call_value(ctx->script, V_DISPATCH(objv), NULL, DISPATCH_METHOD, &dp,
1042             do_ret ? &v : NULL, ctx->ei);
1043     if(FAILED(hres))
1044         return hres;
1045
1046     stack_popn(ctx, argn+1);
1047     return do_ret ? stack_push(ctx, &v) : S_OK;
1048
1049 }
1050
1051 /* ECMA-262 3rd Edition    11.2.3 */
1052 static HRESULT interp_call_member(exec_ctx_t *ctx)
1053 {
1054     const unsigned argn = get_op_uint(ctx, 0);
1055     const int do_ret = get_op_int(ctx, 1);
1056     IDispatch *obj;
1057     DISPPARAMS dp;
1058     VARIANT v;
1059     DISPID id;
1060     HRESULT hres;
1061
1062     TRACE("%d %d\n", argn, do_ret);
1063
1064     obj = stack_topn_objid(ctx, argn, &id);
1065     if(!obj)
1066         return throw_type_error(ctx->script, ctx->ei, id, NULL);
1067
1068     jsstack_to_dp(ctx, argn, &dp);
1069     hres = disp_call(ctx->script, obj, id, DISPATCH_METHOD, &dp, do_ret ? &v : NULL, ctx->ei);
1070     if(FAILED(hres))
1071         return hres;
1072
1073     stack_popn(ctx, argn+2);
1074     return do_ret ? stack_push(ctx, &v) : S_OK;
1075
1076 }
1077
1078 /* ECMA-262 3rd Edition    11.1.1 */
1079 static HRESULT interp_this(exec_ctx_t *ctx)
1080 {
1081     VARIANT v;
1082
1083     TRACE("\n");
1084
1085     V_VT(&v) = VT_DISPATCH;
1086     V_DISPATCH(&v) = ctx->this_obj;
1087     IDispatch_AddRef(ctx->this_obj);
1088     return stack_push(ctx, &v);
1089 }
1090
1091 /* ECMA-262 3rd Edition    10.1.4 */
1092 static HRESULT interp_ident(exec_ctx_t *ctx)
1093 {
1094     const BSTR arg = get_op_bstr(ctx, 0);
1095     exprval_t exprval;
1096     VARIANT v;
1097     HRESULT hres;
1098
1099     TRACE("%s\n", debugstr_w(arg));
1100
1101     hres = identifier_eval(ctx->script, arg, &exprval);
1102     if(FAILED(hres))
1103         return hres;
1104
1105     if(exprval.type == EXPRVAL_INVALID)
1106         return throw_type_error(ctx->script, ctx->ei, JS_E_UNDEFINED_VARIABLE, arg);
1107
1108     hres = exprval_to_value(ctx->script, &exprval, ctx->ei, &v);
1109     exprval_release(&exprval);
1110     if(FAILED(hres))
1111         return hres;
1112
1113     return stack_push(ctx, &v);
1114 }
1115
1116 /* ECMA-262 3rd Edition    10.1.4 */
1117 static HRESULT interp_identid(exec_ctx_t *ctx)
1118 {
1119     const BSTR arg = get_op_bstr(ctx, 0);
1120     const unsigned flags = get_op_uint(ctx, 1);
1121     exprval_t exprval;
1122     HRESULT hres;
1123
1124     TRACE("%s %x\n", debugstr_w(arg), flags);
1125
1126     hres = identifier_eval(ctx->script, arg, &exprval);
1127     if(FAILED(hres))
1128         return hres;
1129
1130     if(exprval.type == EXPRVAL_INVALID && (flags & fdexNameEnsure)) {
1131         DISPID id;
1132
1133         hres = jsdisp_get_id(ctx->script->global, arg, fdexNameEnsure, &id);
1134         if(FAILED(hres))
1135             return hres;
1136
1137         exprval_set_idref(&exprval, to_disp(ctx->script->global), id);
1138     }
1139
1140     if(exprval.type != EXPRVAL_IDREF) {
1141         WARN("invalid ref\n");
1142         exprval_release(&exprval);
1143         return stack_push_objid(ctx, NULL, JS_E_OBJECT_EXPECTED);
1144     }
1145
1146     return stack_push_objid(ctx, exprval.u.idref.disp, exprval.u.idref.id);
1147 }
1148
1149 /* ECMA-262 3rd Edition    7.8.1 */
1150 static HRESULT interp_null(exec_ctx_t *ctx)
1151 {
1152     VARIANT v;
1153
1154     TRACE("\n");
1155
1156     V_VT(&v) = VT_NULL;
1157     return stack_push(ctx, &v);
1158 }
1159
1160 /* ECMA-262 3rd Edition    7.8.2 */
1161 static HRESULT interp_bool(exec_ctx_t *ctx)
1162 {
1163     const int arg = get_op_int(ctx, 0);
1164
1165     TRACE("%s\n", arg ? "true" : "false");
1166
1167     return stack_push_bool(ctx, arg);
1168 }
1169
1170 /* ECMA-262 3rd Edition    7.8.3 */
1171 static HRESULT interp_int(exec_ctx_t *ctx)
1172 {
1173     const int arg = get_op_int(ctx, 0);
1174     VARIANT v;
1175
1176     TRACE("%d\n", arg);
1177
1178     V_VT(&v) = VT_I4;
1179     V_I4(&v) = arg;
1180     return stack_push(ctx, &v);
1181 }
1182
1183 /* ECMA-262 3rd Edition    7.8.3 */
1184 static HRESULT interp_double(exec_ctx_t *ctx)
1185 {
1186     const double arg = get_op_double(ctx);
1187
1188     TRACE("%lf\n", arg);
1189
1190     return stack_push_number(ctx, arg);
1191 }
1192
1193 /* ECMA-262 3rd Edition    7.8.4 */
1194 static HRESULT interp_str(exec_ctx_t *ctx)
1195 {
1196     const WCHAR *str = get_op_str(ctx, 0);
1197     VARIANT v;
1198
1199     TRACE("%s\n", debugstr_w(str));
1200
1201     V_VT(&v) = VT_BSTR;
1202     V_BSTR(&v) = SysAllocString(str);
1203     if(!V_BSTR(&v))
1204         return E_OUTOFMEMORY;
1205
1206     return stack_push(ctx, &v);
1207 }
1208
1209 /* ECMA-262 3rd Edition    7.8 */
1210 static HRESULT interp_regexp(exec_ctx_t *ctx)
1211 {
1212     const WCHAR *source = get_op_str(ctx, 0);
1213     const unsigned flags = get_op_uint(ctx, 1);
1214     jsdisp_t *regexp;
1215     VARIANT v;
1216     HRESULT hres;
1217
1218     TRACE("%s %x\n", debugstr_w(source), flags);
1219
1220     hres = create_regexp(ctx->script, source, strlenW(source), flags, &regexp);
1221     if(FAILED(hres))
1222         return hres;
1223
1224     var_set_jsdisp(&v, regexp);
1225     return stack_push(ctx, &v);
1226 }
1227
1228 /* ECMA-262 3rd Edition    11.1.4 */
1229 static HRESULT interp_carray(exec_ctx_t *ctx)
1230 {
1231     const unsigned arg = get_op_uint(ctx, 0);
1232     jsdisp_t *array;
1233     VARIANT *v, r;
1234     unsigned i;
1235     HRESULT hres;
1236
1237     TRACE("%u\n", arg);
1238
1239     hres = create_array(ctx->script, arg, &array);
1240     if(FAILED(hres))
1241         return hres;
1242
1243     i = arg;
1244     while(i--) {
1245         v = stack_pop(ctx);
1246         hres = jsdisp_propput_idx(array, i, v, ctx->ei);
1247         VariantClear(v);
1248         if(FAILED(hres)) {
1249             jsdisp_release(array);
1250             return hres;
1251         }
1252     }
1253
1254     var_set_jsdisp(&r, array);
1255     return stack_push(ctx, &r);
1256 }
1257
1258 /* ECMA-262 3rd Edition    11.1.5 */
1259 static HRESULT interp_new_obj(exec_ctx_t *ctx)
1260 {
1261     jsdisp_t *obj;
1262     VARIANT v;
1263     HRESULT hres;
1264
1265     TRACE("\n");
1266
1267     hres = create_object(ctx->script, NULL, &obj);
1268     if(FAILED(hres))
1269         return hres;
1270
1271     var_set_jsdisp(&v, obj);
1272     return stack_push(ctx, &v);
1273 }
1274
1275 /* ECMA-262 3rd Edition    11.1.5 */
1276 static HRESULT interp_obj_prop(exec_ctx_t *ctx)
1277 {
1278     const BSTR name = get_op_bstr(ctx, 0);
1279     jsdisp_t *obj;
1280     VARIANT *v;
1281     HRESULT hres;
1282
1283     TRACE("%s\n", debugstr_w(name));
1284
1285     v = stack_pop(ctx);
1286
1287     assert(V_VT(stack_top(ctx)) == VT_DISPATCH);
1288     obj = as_jsdisp(V_DISPATCH(stack_top(ctx)));
1289
1290     hres = jsdisp_propput_name(obj, name, v, ctx->ei);
1291     VariantClear(v);
1292     return hres;
1293 }
1294
1295 /* ECMA-262 3rd Edition    11.11 */
1296 static HRESULT interp_cnd_nz(exec_ctx_t *ctx)
1297 {
1298     const unsigned arg = get_op_uint(ctx, 0);
1299     VARIANT_BOOL b;
1300     HRESULT hres;
1301
1302     TRACE("\n");
1303
1304     hres = to_boolean(stack_top(ctx), &b);
1305     if(FAILED(hres))
1306         return hres;
1307
1308     if(b) {
1309         ctx->ip = arg;
1310     }else {
1311         stack_popn(ctx, 1);
1312         ctx->ip++;
1313     }
1314     return S_OK;
1315 }
1316
1317 /* ECMA-262 3rd Edition    11.11 */
1318 static HRESULT interp_cnd_z(exec_ctx_t *ctx)
1319 {
1320     const unsigned arg = get_op_uint(ctx, 0);
1321     VARIANT_BOOL b;
1322     HRESULT hres;
1323
1324     TRACE("\n");
1325
1326     hres = to_boolean(stack_top(ctx), &b);
1327     if(FAILED(hres))
1328         return hres;
1329
1330     if(b) {
1331         stack_popn(ctx, 1);
1332         ctx->ip++;
1333     }else {
1334         ctx->ip = arg;
1335     }
1336     return S_OK;
1337 }
1338
1339 /* ECMA-262 3rd Edition    11.10 */
1340 static HRESULT interp_or(exec_ctx_t *ctx)
1341 {
1342     INT l, r;
1343     HRESULT hres;
1344
1345     TRACE("\n");
1346
1347     hres = stack_pop_int(ctx, &r);
1348     if(FAILED(hres))
1349         return hres;
1350
1351     hres = stack_pop_int(ctx, &l);
1352     if(FAILED(hres))
1353         return hres;
1354
1355     return stack_push_int(ctx, l|r);
1356 }
1357
1358 /* ECMA-262 3rd Edition    11.10 */
1359 static HRESULT interp_xor(exec_ctx_t *ctx)
1360 {
1361     INT l, r;
1362     HRESULT hres;
1363
1364     TRACE("\n");
1365
1366     hres = stack_pop_int(ctx, &r);
1367     if(FAILED(hres))
1368         return hres;
1369
1370     hres = stack_pop_int(ctx, &l);
1371     if(FAILED(hres))
1372         return hres;
1373
1374     return stack_push_int(ctx, l^r);
1375 }
1376
1377 /* ECMA-262 3rd Edition    11.10 */
1378 static HRESULT interp_and(exec_ctx_t *ctx)
1379 {
1380     INT l, r;
1381     HRESULT hres;
1382
1383     TRACE("\n");
1384
1385     hres = stack_pop_int(ctx, &r);
1386     if(FAILED(hres))
1387         return hres;
1388
1389     hres = stack_pop_int(ctx, &l);
1390     if(FAILED(hres))
1391         return hres;
1392
1393     return stack_push_int(ctx, l&r);
1394 }
1395
1396 /* ECMA-262 3rd Edition    11.8.6 */
1397 static HRESULT interp_instanceof(exec_ctx_t *ctx)
1398 {
1399     jsdisp_t *obj, *iter, *tmp = NULL;
1400     VARIANT prot, *v;
1401     BOOL ret = FALSE;
1402     HRESULT hres;
1403
1404     static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
1405
1406     v = stack_pop(ctx);
1407     if(V_VT(v) != VT_DISPATCH || !V_DISPATCH(v)) {
1408         VariantClear(v);
1409         return throw_type_error(ctx->script, ctx->ei, JS_E_FUNCTION_EXPECTED, NULL);
1410     }
1411
1412     obj = iface_to_jsdisp((IUnknown*)V_DISPATCH(v));
1413     IDispatch_Release(V_DISPATCH(v));
1414     if(!obj) {
1415         FIXME("non-jsdisp objects not supported\n");
1416         return E_FAIL;
1417     }
1418
1419     if(is_class(obj, JSCLASS_FUNCTION)) {
1420         hres = jsdisp_propget_name(obj, prototypeW, &prot, ctx->ei);
1421     }else {
1422         hres = throw_type_error(ctx->script, ctx->ei, JS_E_FUNCTION_EXPECTED, NULL);
1423     }
1424     jsdisp_release(obj);
1425     if(FAILED(hres))
1426         return hres;
1427
1428     v = stack_pop(ctx);
1429
1430     if(V_VT(&prot) == VT_DISPATCH) {
1431         if(V_VT(v) == VT_DISPATCH)
1432             tmp = iface_to_jsdisp((IUnknown*)V_DISPATCH(v));
1433         for(iter = tmp; !ret && iter; iter = iter->prototype) {
1434             hres = disp_cmp(V_DISPATCH(&prot), to_disp(iter), &ret);
1435             if(FAILED(hres))
1436                 break;
1437         }
1438
1439         if(tmp)
1440             jsdisp_release(tmp);
1441     }else {
1442         FIXME("prototype is not an object\n");
1443         hres = E_FAIL;
1444     }
1445
1446     VariantClear(&prot);
1447     VariantClear(v);
1448     if(FAILED(hres))
1449         return hres;
1450
1451     return stack_push_bool(ctx, ret);
1452 }
1453
1454 /* ECMA-262 3rd Edition    11.8.7 */
1455 static HRESULT interp_in(exec_ctx_t *ctx)
1456 {
1457     VARIANT *obj, *v;
1458     DISPID id = 0;
1459     BOOL ret;
1460     BSTR str;
1461     HRESULT hres;
1462
1463     TRACE("\n");
1464
1465     obj = stack_pop(ctx);
1466     v = stack_pop(ctx);
1467
1468     if(V_VT(obj) != VT_DISPATCH || !V_DISPATCH(obj)) {
1469         VariantClear(obj);
1470         VariantClear(v);
1471         return throw_type_error(ctx->script, ctx->ei, JS_E_OBJECT_EXPECTED, NULL);
1472     }
1473
1474     hres = to_string(ctx->script, v, ctx->ei, &str);
1475     VariantClear(v);
1476     if(FAILED(hres)) {
1477         IDispatch_Release(V_DISPATCH(obj));
1478         return hres;
1479     }
1480
1481     hres = disp_get_id(ctx->script, V_DISPATCH(obj), str, 0, &id);
1482     IDispatch_Release(V_DISPATCH(obj));
1483     SysFreeString(str);
1484     if(SUCCEEDED(hres))
1485         ret = TRUE;
1486     else if(hres == DISP_E_UNKNOWNNAME)
1487         ret = FALSE;
1488     else
1489         return hres;
1490
1491     return stack_push_bool(ctx, ret);
1492 }
1493
1494 /* ECMA-262 3rd Edition    11.6.1 */
1495 static HRESULT add_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
1496 {
1497     VARIANT r, l;
1498     HRESULT hres;
1499
1500     hres = to_primitive(ctx, lval, ei, &l, NO_HINT);
1501     if(FAILED(hres))
1502         return hres;
1503
1504     hres = to_primitive(ctx, rval, ei, &r, NO_HINT);
1505     if(FAILED(hres)) {
1506         VariantClear(&l);
1507         return hres;
1508     }
1509
1510     if(V_VT(&l) == VT_BSTR || V_VT(&r) == VT_BSTR) {
1511         BSTR lstr = NULL, rstr = NULL;
1512
1513         if(V_VT(&l) == VT_BSTR)
1514             lstr = V_BSTR(&l);
1515         else
1516             hres = to_string(ctx, &l, ei, &lstr);
1517
1518         if(SUCCEEDED(hres)) {
1519             if(V_VT(&r) == VT_BSTR)
1520                 rstr = V_BSTR(&r);
1521             else
1522                 hres = to_string(ctx, &r, ei, &rstr);
1523         }
1524
1525         if(SUCCEEDED(hres)) {
1526             int len1, len2;
1527
1528             len1 = SysStringLen(lstr);
1529             len2 = SysStringLen(rstr);
1530
1531             V_VT(retv) = VT_BSTR;
1532             V_BSTR(retv) = SysAllocStringLen(NULL, len1+len2);
1533             if(len1)
1534                 memcpy(V_BSTR(retv), lstr, len1*sizeof(WCHAR));
1535             if(len2)
1536                 memcpy(V_BSTR(retv)+len1, rstr, len2*sizeof(WCHAR));
1537             V_BSTR(retv)[len1+len2] = 0;
1538         }
1539
1540         if(V_VT(&l) != VT_BSTR)
1541             SysFreeString(lstr);
1542         if(V_VT(&r) != VT_BSTR)
1543             SysFreeString(rstr);
1544     }else {
1545         double nl, nr;
1546
1547         hres = to_number(ctx, &l, ei, &nl);
1548         if(SUCCEEDED(hres)) {
1549             hres = to_number(ctx, &r, ei, &nr);
1550             if(SUCCEEDED(hres))
1551                 num_set_val(retv, nl + nr);
1552         }
1553     }
1554
1555     VariantClear(&r);
1556     VariantClear(&l);
1557     return hres;
1558 }
1559
1560 /* ECMA-262 3rd Edition    11.6.1 */
1561 static HRESULT interp_add(exec_ctx_t *ctx)
1562 {
1563     VARIANT *l, *r, ret;
1564     HRESULT hres;
1565
1566     r = stack_pop(ctx);
1567     l = stack_pop(ctx);
1568
1569     TRACE("%s + %s\n", debugstr_variant(l), debugstr_variant(r));
1570
1571     hres = add_eval(ctx->script, l, r, ctx->ei, &ret);
1572     VariantClear(l);
1573     VariantClear(r);
1574     if(FAILED(hres))
1575         return hres;
1576
1577     return stack_push(ctx, &ret);
1578 }
1579
1580 /* ECMA-262 3rd Edition    11.6.2 */
1581 static HRESULT interp_sub(exec_ctx_t *ctx)
1582 {
1583     double l, r;
1584     HRESULT hres;
1585
1586     TRACE("\n");
1587
1588     hres = stack_pop_number(ctx, &r);
1589     if(FAILED(hres))
1590         return hres;
1591
1592     hres = stack_pop_number(ctx, &l);
1593     if(FAILED(hres))
1594         return hres;
1595
1596     return stack_push_number(ctx, l-r);
1597 }
1598
1599 /* ECMA-262 3rd Edition    11.5.1 */
1600 static HRESULT interp_mul(exec_ctx_t *ctx)
1601 {
1602     double l, r;
1603     HRESULT hres;
1604
1605     TRACE("\n");
1606
1607     hres = stack_pop_number(ctx, &r);
1608     if(FAILED(hres))
1609         return hres;
1610
1611     hres = stack_pop_number(ctx, &l);
1612     if(FAILED(hres))
1613         return hres;
1614
1615     return stack_push_number(ctx, l*r);
1616 }
1617
1618 /* ECMA-262 3rd Edition    11.5.2 */
1619 static HRESULT interp_div(exec_ctx_t *ctx)
1620 {
1621     double l, r;
1622     HRESULT hres;
1623
1624     TRACE("\n");
1625
1626     hres = stack_pop_number(ctx, &r);
1627     if(FAILED(hres))
1628         return hres;
1629
1630     hres = stack_pop_number(ctx, &l);
1631     if(FAILED(hres))
1632         return hres;
1633
1634     return stack_push_number(ctx, l/r);
1635 }
1636
1637 /* ECMA-262 3rd Edition    11.5.3 */
1638 static HRESULT interp_mod(exec_ctx_t *ctx)
1639 {
1640     double l, r;
1641     HRESULT hres;
1642
1643     TRACE("\n");
1644
1645     hres = stack_pop_number(ctx, &r);
1646     if(FAILED(hres))
1647         return hres;
1648
1649     hres = stack_pop_number(ctx, &l);
1650     if(FAILED(hres))
1651         return hres;
1652
1653     return stack_push_number(ctx, fmod(l, r));
1654 }
1655
1656 /* ECMA-262 3rd Edition    11.4.2 */
1657 static HRESULT interp_delete(exec_ctx_t *ctx)
1658 {
1659     VARIANT *obj_var, *name_var;
1660     IDispatchEx *dispex;
1661     IDispatch *obj;
1662     BSTR name;
1663     BOOL ret;
1664     HRESULT hres;
1665
1666     TRACE("\n");
1667
1668     name_var = stack_pop(ctx);
1669     obj_var = stack_pop(ctx);
1670
1671     hres = to_object(ctx->script, obj_var, &obj);
1672     VariantClear(obj_var);
1673     if(FAILED(hres)) {
1674         VariantClear(name_var);
1675         return hres;
1676     }
1677
1678     hres = to_string(ctx->script, name_var, ctx->ei, &name);
1679     VariantClear(name_var);
1680     if(FAILED(hres)) {
1681         IDispatch_Release(obj);
1682         return hres;
1683     }
1684
1685     hres = IDispatch_QueryInterface(obj, &IID_IDispatchEx, (void**)&dispex);
1686     if(SUCCEEDED(hres)) {
1687         hres = IDispatchEx_DeleteMemberByName(dispex, name, make_grfdex(ctx->script, fdexNameCaseSensitive));
1688         ret = TRUE;
1689         IDispatchEx_Release(dispex);
1690     }else {
1691         hres = S_OK;
1692         ret = FALSE;
1693     }
1694
1695     IDispatch_Release(obj);
1696     SysFreeString(name);
1697     if(FAILED(hres))
1698         return hres;
1699
1700     return stack_push_bool(ctx, ret);
1701 }
1702
1703 /* ECMA-262 3rd Edition    11.4.2 */
1704 static HRESULT interp_delete_ident(exec_ctx_t *ctx)
1705 {
1706     const BSTR arg = get_op_bstr(ctx, 0);
1707     IDispatchEx *dispex;
1708     exprval_t exprval;
1709     BOOL ret = FALSE;
1710     HRESULT hres;
1711
1712     TRACE("%s\n", debugstr_w(arg));
1713
1714     hres = identifier_eval(ctx->script, arg, &exprval);
1715     if(FAILED(hres))
1716         return hres;
1717
1718     if(exprval.type != EXPRVAL_IDREF) {
1719         FIXME("Unsupported exprval\n");
1720         exprval_release(&exprval);
1721         return E_NOTIMPL;
1722     }
1723
1724     hres = IDispatch_QueryInterface(exprval.u.idref.disp, &IID_IDispatchEx, (void**)&dispex);
1725     IDispatch_Release(exprval.u.idref.disp);
1726     if(SUCCEEDED(hres)) {
1727         hres = IDispatchEx_DeleteMemberByDispID(dispex, exprval.u.idref.id);
1728         IDispatchEx_Release(dispex);
1729         if(FAILED(hres))
1730             return hres;
1731
1732         ret = TRUE;
1733     }
1734
1735     return stack_push_bool(ctx, ret);
1736 }
1737
1738 /* ECMA-262 3rd Edition    11.4.2 */
1739 static HRESULT interp_void(exec_ctx_t *ctx)
1740 {
1741     VARIANT v;
1742
1743     TRACE("\n");
1744
1745     stack_popn(ctx, 1);
1746
1747     V_VT(&v) = VT_EMPTY;
1748     return stack_push(ctx, &v);
1749 }
1750
1751 /* ECMA-262 3rd Edition    11.4.3 */
1752 static HRESULT typeof_string(VARIANT *v, const WCHAR **ret)
1753 {
1754     switch(V_VT(v)) {
1755     case VT_EMPTY:
1756         *ret = undefinedW;
1757         break;
1758     case VT_NULL:
1759         *ret = objectW;
1760         break;
1761     case VT_BOOL:
1762         *ret = booleanW;
1763         break;
1764     case VT_I4:
1765     case VT_R8:
1766         *ret = numberW;
1767         break;
1768     case VT_BSTR:
1769         *ret = stringW;
1770         break;
1771     case VT_DISPATCH: {
1772         jsdisp_t *dispex;
1773
1774         if(V_DISPATCH(v) && (dispex = iface_to_jsdisp((IUnknown*)V_DISPATCH(v)))) {
1775             *ret = is_class(dispex, JSCLASS_FUNCTION) ? functionW : objectW;
1776             jsdisp_release(dispex);
1777         }else {
1778             *ret = objectW;
1779         }
1780         break;
1781     }
1782     default:
1783         FIXME("unhandled vt %d\n", V_VT(v));
1784         return E_NOTIMPL;
1785     }
1786
1787     return S_OK;
1788 }
1789
1790 /* ECMA-262 3rd Edition    11.4.3 */
1791 static HRESULT interp_typeofid(exec_ctx_t *ctx)
1792 {
1793     const WCHAR *ret;
1794     IDispatch *obj;
1795     VARIANT v;
1796     DISPID id;
1797     HRESULT hres;
1798
1799     static const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
1800
1801     TRACE("\n");
1802
1803     obj = stack_pop_objid(ctx, &id);
1804     if(!obj)
1805         return stack_push_string(ctx, undefinedW);
1806
1807     V_VT(&v) = VT_EMPTY;
1808     hres = disp_propget(ctx->script, obj, id, &v, ctx->ei);
1809     IDispatch_Release(obj);
1810     if(FAILED(hres))
1811         return stack_push_string(ctx, unknownW);
1812
1813     hres = typeof_string(&v, &ret);
1814     VariantClear(&v);
1815     if(FAILED(hres))
1816         return hres;
1817
1818     return stack_push_string(ctx, ret);
1819 }
1820
1821 /* ECMA-262 3rd Edition    11.4.3 */
1822 static HRESULT interp_typeofident(exec_ctx_t *ctx)
1823 {
1824     const BSTR arg = get_op_bstr(ctx, 0);
1825     exprval_t exprval;
1826     const WCHAR *ret;
1827     VARIANT v;
1828     HRESULT hres;
1829
1830     TRACE("%s\n", debugstr_w(arg));
1831
1832     hres = identifier_eval(ctx->script, arg, &exprval);
1833     if(FAILED(hres))
1834         return hres;
1835
1836     if(exprval.type == EXPRVAL_INVALID) {
1837         hres = stack_push_string(ctx, undefinedW);
1838         exprval_release(&exprval);
1839         return hres;
1840     }
1841
1842     hres = exprval_to_value(ctx->script, &exprval, ctx->ei, &v);
1843     exprval_release(&exprval);
1844     if(FAILED(hres))
1845         return hres;
1846
1847     hres = typeof_string(&v, &ret);
1848     VariantClear(&v);
1849     if(FAILED(hres))
1850         return hres;
1851
1852     return stack_push_string(ctx, ret);
1853 }
1854
1855 /* ECMA-262 3rd Edition    11.4.3 */
1856 static HRESULT interp_typeof(exec_ctx_t *ctx)
1857 {
1858     const WCHAR *ret;
1859     VARIANT *v;
1860     HRESULT hres;
1861
1862     TRACE("\n");
1863
1864     v = stack_pop(ctx);
1865     hres = typeof_string(v, &ret);
1866     VariantClear(v);
1867     if(FAILED(hres))
1868         return hres;
1869
1870     return stack_push_string(ctx, ret);
1871 }
1872
1873 /* ECMA-262 3rd Edition    11.4.7 */
1874 static HRESULT interp_minus(exec_ctx_t *ctx)
1875 {
1876     double n;
1877     HRESULT hres;
1878
1879     TRACE("\n");
1880
1881     hres = stack_pop_number(ctx, &n);
1882     if(FAILED(hres))
1883         return hres;
1884
1885     return stack_push_number(ctx, -n);
1886 }
1887
1888 /* ECMA-262 3rd Edition    11.4.6 */
1889 static HRESULT interp_tonum(exec_ctx_t *ctx)
1890 {
1891     VARIANT *v;
1892     double n;
1893     HRESULT hres;
1894
1895     TRACE("\n");
1896
1897     v = stack_pop(ctx);
1898     hres = to_number(ctx->script, v, ctx->ei, &n);
1899     VariantClear(v);
1900     if(FAILED(hres))
1901         return hres;
1902
1903     return stack_push_number(ctx, n);
1904 }
1905
1906 /* ECMA-262 3rd Edition    11.3.1 */
1907 static HRESULT interp_postinc(exec_ctx_t *ctx)
1908 {
1909     const int arg = get_op_int(ctx, 0);
1910     IDispatch *obj;
1911     DISPID id;
1912     VARIANT v;
1913     HRESULT hres;
1914
1915     TRACE("%d\n", arg);
1916
1917     obj = stack_pop_objid(ctx, &id);
1918     if(!obj)
1919         return throw_type_error(ctx->script, ctx->ei, JS_E_OBJECT_EXPECTED, NULL);
1920
1921     hres = disp_propget(ctx->script, obj, id, &v, ctx->ei);
1922     if(SUCCEEDED(hres)) {
1923         VARIANT inc;
1924         double n;
1925
1926         hres = to_number(ctx->script, &v, ctx->ei, &n);
1927         if(SUCCEEDED(hres)) {
1928             num_set_val(&inc, n+(double)arg);
1929             hres = disp_propput(ctx->script, obj, id, &inc, ctx->ei);
1930         }
1931         if(FAILED(hres))
1932             VariantClear(&v);
1933     }
1934     IDispatch_Release(obj);
1935     if(FAILED(hres))
1936         return hres;
1937
1938     return stack_push(ctx, &v);
1939 }
1940
1941 /* ECMA-262 3rd Edition    11.4.4, 11.4.5 */
1942 static HRESULT interp_preinc(exec_ctx_t *ctx)
1943 {
1944     const int arg = get_op_int(ctx, 0);
1945     IDispatch *obj;
1946     DISPID id;
1947     VARIANT v;
1948     HRESULT hres;
1949
1950     TRACE("%d\n", arg);
1951
1952     obj = stack_pop_objid(ctx, &id);
1953     if(!obj)
1954         return throw_type_error(ctx->script, ctx->ei, JS_E_OBJECT_EXPECTED, NULL);
1955
1956     hres = disp_propget(ctx->script, obj, id, &v, ctx->ei);
1957     if(SUCCEEDED(hres)) {
1958         double n;
1959
1960         hres = to_number(ctx->script, &v, ctx->ei, &n);
1961         VariantClear(&v);
1962         if(SUCCEEDED(hres)) {
1963             num_set_val(&v, n+(double)arg);
1964             hres = disp_propput(ctx->script, obj, id, &v, ctx->ei);
1965         }
1966     }
1967     IDispatch_Release(obj);
1968     if(FAILED(hres))
1969         return hres;
1970
1971     return stack_push(ctx, &v);
1972 }
1973
1974 /* ECMA-262 3rd Edition    11.9.3 */
1975 static HRESULT equal_values(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, BOOL *ret)
1976 {
1977     if(V_VT(lval) == V_VT(rval) || (is_num_vt(V_VT(lval)) && is_num_vt(V_VT(rval))))
1978        return equal2_values(lval, rval, ret);
1979
1980     /* FIXME: NULL disps should be handled in more general way */
1981     if(V_VT(lval) == VT_DISPATCH && !V_DISPATCH(lval)) {
1982         VARIANT v;
1983         V_VT(&v) = VT_NULL;
1984         return equal_values(ctx, &v, rval, ei, ret);
1985     }
1986
1987     if(V_VT(rval) == VT_DISPATCH && !V_DISPATCH(rval)) {
1988         VARIANT v;
1989         V_VT(&v) = VT_NULL;
1990         return equal_values(ctx, lval, &v, ei, ret);
1991     }
1992
1993     if((V_VT(lval) == VT_NULL && V_VT(rval) == VT_EMPTY) ||
1994        (V_VT(lval) == VT_EMPTY && V_VT(rval) == VT_NULL)) {
1995         *ret = TRUE;
1996         return S_OK;
1997     }
1998
1999     if(V_VT(lval) == VT_BSTR && is_num_vt(V_VT(rval))) {
2000         VARIANT v;
2001         double n;
2002         HRESULT hres;
2003
2004         hres = to_number(ctx, lval, ei, &n);
2005         if(FAILED(hres))
2006             return hres;
2007
2008         /* FIXME: optimize */
2009         num_set_val(&v, n);
2010
2011         return equal_values(ctx, &v, rval, ei, ret);
2012     }
2013
2014     if(V_VT(rval) == VT_BSTR && is_num_vt(V_VT(lval))) {
2015         VARIANT v;
2016         double n;
2017         HRESULT hres;
2018
2019         hres = to_number(ctx, rval, ei, &n);
2020         if(FAILED(hres))
2021             return hres;
2022
2023         /* FIXME: optimize */
2024         num_set_val(&v, n);
2025
2026         return equal_values(ctx, lval, &v, ei, ret);
2027     }
2028
2029     if(V_VT(rval) == VT_BOOL) {
2030         VARIANT v;
2031
2032         num_set_int(&v, V_BOOL(rval) ? 1 : 0);
2033         return equal_values(ctx, lval, &v, ei, ret);
2034     }
2035
2036     if(V_VT(lval) == VT_BOOL) {
2037         VARIANT v;
2038
2039         num_set_int(&v, V_BOOL(lval) ? 1 : 0);
2040         return equal_values(ctx, &v, rval, ei, ret);
2041     }
2042
2043
2044     if(V_VT(rval) == VT_DISPATCH && (V_VT(lval) == VT_BSTR || is_num_vt(V_VT(lval)))) {
2045         VARIANT v;
2046         HRESULT hres;
2047
2048         hres = to_primitive(ctx, rval, ei, &v, NO_HINT);
2049         if(FAILED(hres))
2050             return hres;
2051
2052         hres = equal_values(ctx, lval, &v, ei, ret);
2053
2054         VariantClear(&v);
2055         return hres;
2056     }
2057
2058
2059     if(V_VT(lval) == VT_DISPATCH && (V_VT(rval) == VT_BSTR || is_num_vt(V_VT(rval)))) {
2060         VARIANT v;
2061         HRESULT hres;
2062
2063         hres = to_primitive(ctx, lval, ei, &v, NO_HINT);
2064         if(FAILED(hres))
2065             return hres;
2066
2067         hres = equal_values(ctx, &v, rval, ei, ret);
2068
2069         VariantClear(&v);
2070         return hres;
2071     }
2072
2073
2074     *ret = FALSE;
2075     return S_OK;
2076 }
2077
2078 /* ECMA-262 3rd Edition    11.9.1 */
2079 static HRESULT interp_eq(exec_ctx_t *ctx)
2080 {
2081     VARIANT *l, *r;
2082     BOOL b;
2083     HRESULT hres;
2084
2085     r = stack_pop(ctx);
2086     l = stack_pop(ctx);
2087
2088     TRACE("%s == %s\n", debugstr_variant(l), debugstr_variant(r));
2089
2090     hres = equal_values(ctx->script, l, r, ctx->ei, &b);
2091     VariantClear(l);
2092     VariantClear(r);
2093     if(FAILED(hres))
2094         return hres;
2095
2096     return stack_push_bool(ctx, b);
2097 }
2098
2099 /* ECMA-262 3rd Edition    11.9.2 */
2100 static HRESULT interp_neq(exec_ctx_t *ctx)
2101 {
2102     VARIANT *l, *r;
2103     BOOL b;
2104     HRESULT hres;
2105
2106     r = stack_pop(ctx);
2107     l = stack_pop(ctx);
2108
2109     TRACE("%s != %s\n", debugstr_variant(l), debugstr_variant(r));
2110
2111     hres = equal_values(ctx->script, l, r, ctx->ei, &b);
2112     VariantClear(l);
2113     VariantClear(r);
2114     if(FAILED(hres))
2115         return hres;
2116
2117     return stack_push_bool(ctx, !b);
2118 }
2119
2120 /* ECMA-262 3rd Edition    11.9.4 */
2121 static HRESULT interp_eq2(exec_ctx_t *ctx)
2122 {
2123     VARIANT *l, *r;
2124     BOOL b;
2125     HRESULT hres;
2126
2127     TRACE("\n");
2128
2129     r = stack_pop(ctx);
2130     l = stack_pop(ctx);
2131
2132     hres = equal2_values(r, l, &b);
2133     VariantClear(l);
2134     VariantClear(r);
2135     if(FAILED(hres))
2136         return hres;
2137
2138     return stack_push_bool(ctx, b);
2139 }
2140
2141 /* ECMA-262 3rd Edition    11.9.5 */
2142 static HRESULT interp_neq2(exec_ctx_t *ctx)
2143 {
2144     VARIANT *l, *r;
2145     BOOL b;
2146     HRESULT hres;
2147
2148     TRACE("\n");
2149
2150     r = stack_pop(ctx);
2151     l = stack_pop(ctx);
2152
2153     hres = equal2_values(r, l, &b);
2154     VariantClear(l);
2155     VariantClear(r);
2156     if(FAILED(hres))
2157         return hres;
2158
2159     return stack_push_bool(ctx, !b);
2160 }
2161
2162 /* ECMA-262 3rd Edition    11.8.5 */
2163 static HRESULT less_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, BOOL greater, jsexcept_t *ei, BOOL *ret)
2164 {
2165     double ln, rn;
2166     VARIANT l, r;
2167     HRESULT hres;
2168
2169     hres = to_primitive(ctx, lval, ei, &l, NO_HINT);
2170     if(FAILED(hres))
2171         return hres;
2172
2173     hres = to_primitive(ctx, rval, ei, &r, NO_HINT);
2174     if(FAILED(hres)) {
2175         VariantClear(&l);
2176         return hres;
2177     }
2178
2179     if(V_VT(&l) == VT_BSTR && V_VT(&r) == VT_BSTR) {
2180         *ret = (strcmpW(V_BSTR(&l), V_BSTR(&r)) < 0) ^ greater;
2181         SysFreeString(V_BSTR(&l));
2182         SysFreeString(V_BSTR(&r));
2183         return S_OK;
2184     }
2185
2186     hres = to_number(ctx, &l, ei, &ln);
2187     VariantClear(&l);
2188     if(SUCCEEDED(hres))
2189         hres = to_number(ctx, &r, ei, &rn);
2190     VariantClear(&r);
2191     if(FAILED(hres))
2192         return hres;
2193
2194     *ret = !isnan(ln) && !isnan(rn) && ((ln < rn) ^ greater);
2195     return S_OK;
2196 }
2197
2198 /* ECMA-262 3rd Edition    11.8.1 */
2199 static HRESULT interp_lt(exec_ctx_t *ctx)
2200 {
2201     VARIANT *l, *r;
2202     BOOL b;
2203     HRESULT hres;
2204
2205     r = stack_pop(ctx);
2206     l = stack_pop(ctx);
2207
2208     TRACE("%s < %s\n", debugstr_variant(l), debugstr_variant(r));
2209
2210     hres = less_eval(ctx->script, l, r, FALSE, ctx->ei, &b);
2211     VariantClear(l);
2212     VariantClear(r);
2213     if(FAILED(hres))
2214         return hres;
2215
2216     return stack_push_bool(ctx, b);
2217 }
2218
2219 /* ECMA-262 3rd Edition    11.8.1 */
2220 static HRESULT interp_lteq(exec_ctx_t *ctx)
2221 {
2222     VARIANT *l, *r;
2223     BOOL b;
2224     HRESULT hres;
2225
2226     r = stack_pop(ctx);
2227     l = stack_pop(ctx);
2228
2229     TRACE("%s <= %s\n", debugstr_variant(l), debugstr_variant(r));
2230
2231     hres = less_eval(ctx->script, r, l, TRUE, ctx->ei, &b);
2232     VariantClear(l);
2233     VariantClear(r);
2234     if(FAILED(hres))
2235         return hres;
2236
2237     return stack_push_bool(ctx, b);
2238 }
2239
2240 /* ECMA-262 3rd Edition    11.8.2 */
2241 static HRESULT interp_gt(exec_ctx_t *ctx)
2242 {
2243     VARIANT *l, *r;
2244     BOOL b;
2245     HRESULT hres;
2246
2247     r = stack_pop(ctx);
2248     l = stack_pop(ctx);
2249
2250     TRACE("%s > %s\n", debugstr_variant(l), debugstr_variant(r));
2251
2252     hres = less_eval(ctx->script, r, l, FALSE, ctx->ei, &b);
2253     VariantClear(l);
2254     VariantClear(r);
2255     if(FAILED(hres))
2256         return hres;
2257
2258     return stack_push_bool(ctx, b);
2259 }
2260
2261 /* ECMA-262 3rd Edition    11.8.4 */
2262 static HRESULT interp_gteq(exec_ctx_t *ctx)
2263 {
2264     VARIANT *l, *r;
2265     BOOL b;
2266     HRESULT hres;
2267
2268     r = stack_pop(ctx);
2269     l = stack_pop(ctx);
2270
2271     TRACE("%s >= %s\n", debugstr_variant(l), debugstr_variant(r));
2272
2273     hres = less_eval(ctx->script, l, r, TRUE, ctx->ei, &b);
2274     VariantClear(l);
2275     VariantClear(r);
2276     if(FAILED(hres))
2277         return hres;
2278
2279     return stack_push_bool(ctx, b);
2280 }
2281
2282 /* ECMA-262 3rd Edition    11.4.8 */
2283 static HRESULT interp_bneg(exec_ctx_t *ctx)
2284 {
2285     VARIANT *v;
2286     INT i;
2287     HRESULT hres;
2288
2289     TRACE("\n");
2290
2291     v = stack_pop(ctx);
2292     hres = to_int32(ctx->script, v, ctx->ei, &i);
2293     VariantClear(v);
2294     if(FAILED(hres))
2295         return hres;
2296
2297     return stack_push_int(ctx, ~i);
2298 }
2299
2300 /* ECMA-262 3rd Edition    11.4.9 */
2301 static HRESULT interp_neg(exec_ctx_t *ctx)
2302 {
2303     VARIANT *v;
2304     VARIANT_BOOL b;
2305     HRESULT hres;
2306
2307     TRACE("\n");
2308
2309     v = stack_pop(ctx);
2310     hres = to_boolean(v, &b);
2311     VariantClear(v);
2312     if(FAILED(hres))
2313         return hres;
2314
2315     return stack_push_bool(ctx, !b);
2316 }
2317
2318 /* ECMA-262 3rd Edition    11.7.1 */
2319 static HRESULT interp_lshift(exec_ctx_t *ctx)
2320 {
2321     DWORD r;
2322     INT l;
2323     HRESULT hres;
2324
2325     hres = stack_pop_uint(ctx, &r);
2326     if(FAILED(hres))
2327         return hres;
2328
2329     hres = stack_pop_int(ctx, &l);
2330     if(FAILED(hres))
2331         return hres;
2332
2333     return stack_push_int(ctx, l << (r&0x1f));
2334 }
2335
2336 /* ECMA-262 3rd Edition    11.7.2 */
2337 static HRESULT interp_rshift(exec_ctx_t *ctx)
2338 {
2339     DWORD r;
2340     INT l;
2341     HRESULT hres;
2342
2343     hres = stack_pop_uint(ctx, &r);
2344     if(FAILED(hres))
2345         return hres;
2346
2347     hres = stack_pop_int(ctx, &l);
2348     if(FAILED(hres))
2349         return hres;
2350
2351     return stack_push_int(ctx, l >> (r&0x1f));
2352 }
2353
2354 /* ECMA-262 3rd Edition    11.7.3 */
2355 static HRESULT interp_rshift2(exec_ctx_t *ctx)
2356 {
2357     DWORD r, l;
2358     HRESULT hres;
2359
2360     hres = stack_pop_uint(ctx, &r);
2361     if(FAILED(hres))
2362         return hres;
2363
2364     hres = stack_pop_uint(ctx, &l);
2365     if(FAILED(hres))
2366         return hres;
2367
2368     return stack_push_int(ctx, l >> (r&0x1f));
2369 }
2370
2371 /* ECMA-262 3rd Edition    11.13.1 */
2372 static HRESULT interp_assign(exec_ctx_t *ctx)
2373 {
2374     IDispatch *disp;
2375     DISPID id;
2376     VARIANT *v;
2377     HRESULT hres;
2378
2379     TRACE("\n");
2380
2381     v = stack_pop(ctx);
2382     disp = stack_pop_objid(ctx, &id);
2383
2384     if(!disp)
2385         return throw_reference_error(ctx->script, ctx->ei, JS_E_ILLEGAL_ASSIGN, NULL);
2386
2387     hres = disp_propput(ctx->script, disp, id, v, ctx->ei);
2388     IDispatch_Release(disp);
2389     if(FAILED(hres)) {
2390         VariantClear(v);
2391         return hres;
2392     }
2393
2394     return stack_push(ctx, v);
2395 }
2396
2397 /* JScript extension */
2398 static HRESULT interp_assign_call(exec_ctx_t *ctx)
2399 {
2400     const unsigned arg = get_op_uint(ctx, 0);
2401     DISPID propput_dispid = DISPID_PROPERTYPUT;
2402     IDispatch *disp;
2403     DISPPARAMS dp;
2404     VARIANT *v;
2405     DISPID id;
2406     HRESULT hres;
2407
2408     TRACE("%u\n", arg);
2409
2410     disp = stack_topn_objid(ctx, arg+1, &id);
2411     if(!disp)
2412         return throw_reference_error(ctx->script, ctx->ei, JS_E_ILLEGAL_ASSIGN, NULL);
2413
2414     jsstack_to_dp(ctx, arg+1, &dp);
2415     dp.cNamedArgs = 1;
2416     dp.rgdispidNamedArgs = &propput_dispid;
2417     hres = disp_call(ctx->script, disp, id, DISPATCH_PROPERTYPUT, &dp, NULL, ctx->ei);
2418     if(FAILED(hres))
2419         return hres;
2420
2421     v = stack_pop(ctx);
2422     stack_popn(ctx, arg+2);
2423     return stack_push(ctx, v);
2424 }
2425
2426 static HRESULT interp_undefined(exec_ctx_t *ctx)
2427 {
2428     VARIANT v;
2429
2430     TRACE("\n");
2431
2432     V_VT(&v) = VT_EMPTY;
2433     return stack_push(ctx, &v);
2434 }
2435
2436 static HRESULT interp_jmp(exec_ctx_t *ctx)
2437 {
2438     const unsigned arg = get_op_uint(ctx, 0);
2439
2440     TRACE("%u\n", arg);
2441
2442     ctx->ip = arg;
2443     return S_OK;
2444 }
2445
2446 static HRESULT interp_jmp_z(exec_ctx_t *ctx)
2447 {
2448     const unsigned arg = get_op_uint(ctx, 0);
2449     VARIANT_BOOL b;
2450     VARIANT *v;
2451     HRESULT hres;
2452
2453     TRACE("\n");
2454
2455     v = stack_pop(ctx);
2456     hres = to_boolean(v, &b);
2457     VariantClear(v);
2458     if(FAILED(hres))
2459         return hres;
2460
2461     if(b)
2462         ctx->ip++;
2463     else
2464         ctx->ip = arg;
2465     return S_OK;
2466 }
2467
2468 static HRESULT interp_pop(exec_ctx_t *ctx)
2469 {
2470     TRACE("\n");
2471
2472     stack_popn(ctx, 1);
2473     return S_OK;
2474 }
2475
2476 static HRESULT interp_ret(exec_ctx_t *ctx)
2477 {
2478     TRACE("\n");
2479
2480     ctx->ip = -1;
2481     return S_OK;
2482 }
2483
2484 typedef HRESULT (*op_func_t)(exec_ctx_t*);
2485
2486 static const op_func_t op_funcs[] = {
2487 #define X(x,a,b,c) interp_##x,
2488 OP_LIST
2489 #undef X
2490 };
2491
2492 static const unsigned op_move[] = {
2493 #define X(a,x,b,c) x,
2494 OP_LIST
2495 #undef X
2496 };
2497
2498 static HRESULT unwind_exception(exec_ctx_t *ctx)
2499 {
2500     except_frame_t *except_frame;
2501     VARIANT except_val;
2502     BSTR ident;
2503     HRESULT hres;
2504
2505     except_frame = ctx->except_frame;
2506     ctx->except_frame = except_frame->next;
2507
2508     assert(except_frame->stack_top <= ctx->top);
2509     stack_popn(ctx, ctx->top - except_frame->stack_top);
2510
2511     while(except_frame->scope != ctx->scope_chain)
2512         scope_pop(&ctx->scope_chain);
2513
2514     ctx->ip = except_frame->catch_off;
2515
2516     except_val = ctx->ei->var;
2517     memset(ctx->ei, 0, sizeof(*ctx->ei));
2518
2519     ident = except_frame->ident;
2520     heap_free(except_frame);
2521
2522     if(ident) {
2523         jsdisp_t *scope_obj;
2524
2525         hres = create_dispex(ctx->script, NULL, NULL, &scope_obj);
2526         if(SUCCEEDED(hres)) {
2527             hres = jsdisp_propput_name(scope_obj, ident, &except_val, ctx->ei);
2528             if(FAILED(hres))
2529                 jsdisp_release(scope_obj);
2530         }
2531         VariantClear(&except_val);
2532         if(FAILED(hres))
2533             return hres;
2534
2535         hres = scope_push(ctx->scope_chain, scope_obj, &ctx->scope_chain);
2536         jsdisp_release(scope_obj);
2537     }else {
2538         VARIANT v;
2539
2540         hres = stack_push(ctx, &except_val);
2541         if(FAILED(hres))
2542             return hres;
2543
2544         hres = stack_push_bool(ctx, FALSE);
2545         if(FAILED(hres))
2546             return hres;
2547
2548         V_VT(&v) = VT_EMPTY;
2549         hres = stack_push(ctx, &v);
2550     }
2551
2552     return hres;
2553 }
2554
2555 static HRESULT enter_bytecode(script_ctx_t *ctx, bytecode_t *code, function_code_t *func, jsexcept_t *ei, VARIANT *ret)
2556 {
2557     exec_ctx_t *exec_ctx = ctx->exec_ctx;
2558     except_frame_t *prev_except_frame;
2559     function_code_t *prev_func;
2560     unsigned prev_ip, prev_top;
2561     scope_chain_t *prev_scope;
2562     bytecode_t *prev_code;
2563     jsexcept_t *prev_ei;
2564     jsop_t op;
2565     HRESULT hres = S_OK;
2566
2567     TRACE("\n");
2568
2569     prev_top = exec_ctx->top;
2570     prev_scope = exec_ctx->scope_chain;
2571     prev_except_frame = exec_ctx->except_frame;
2572     prev_ip = exec_ctx->ip;
2573     prev_ei = exec_ctx->ei;
2574     prev_code = exec_ctx->code;
2575     prev_func = exec_ctx->func_code;
2576     exec_ctx->ip = func->instr_off;
2577     exec_ctx->ei = ei;
2578     exec_ctx->except_frame = NULL;
2579     exec_ctx->code = code;
2580     exec_ctx->func_code = func;
2581
2582     while(exec_ctx->ip != -1) {
2583         op = code->instrs[exec_ctx->ip].op;
2584         hres = op_funcs[op](exec_ctx);
2585         if(FAILED(hres)) {
2586             TRACE("EXCEPTION\n");
2587
2588             if(!exec_ctx->except_frame)
2589                 break;
2590
2591             hres = unwind_exception(exec_ctx);
2592             if(FAILED(hres))
2593                 break;
2594         }else {
2595             exec_ctx->ip += op_move[op];
2596         }
2597     }
2598
2599     exec_ctx->ip = prev_ip;
2600     exec_ctx->ei = prev_ei;
2601     exec_ctx->except_frame = prev_except_frame;
2602     exec_ctx->code = prev_code;
2603     exec_ctx->func_code = prev_func;
2604
2605     if(FAILED(hres)) {
2606         while(exec_ctx->scope_chain != prev_scope)
2607             scope_pop(&exec_ctx->scope_chain);
2608         stack_popn(exec_ctx, exec_ctx->top-prev_top);
2609         return hres;
2610     }
2611
2612     assert(exec_ctx->top == prev_top+1 || exec_ctx->top == prev_top);
2613     assert(exec_ctx->scope_chain == prev_scope);
2614
2615     if(exec_ctx->top == prev_top)
2616         V_VT(ret) = VT_EMPTY;
2617     else
2618         *ret = *stack_pop(exec_ctx);
2619     return S_OK;
2620 }
2621
2622 HRESULT exec_source(exec_ctx_t *ctx, bytecode_t *code, function_code_t *func, BOOL from_eval,
2623         jsexcept_t *ei, VARIANT *retv)
2624 {
2625     exec_ctx_t *prev_ctx;
2626     VARIANT val;
2627     unsigned i;
2628     HRESULT hres = S_OK;
2629
2630     for(i = 0; i < func->func_cnt; i++) {
2631         jsdisp_t *func_obj;
2632         VARIANT var;
2633
2634         if(!func->funcs[i].name)
2635             continue;
2636
2637         hres = create_source_function(ctx->script, code, func->funcs+i, ctx->scope_chain, &func_obj);
2638         if(FAILED(hres))
2639             return hres;
2640
2641         var_set_jsdisp(&var, func_obj);
2642         hres = jsdisp_propput_name(ctx->var_disp, func->funcs[i].name, &var, ei);
2643         jsdisp_release(func_obj);
2644         if(FAILED(hres))
2645             return hres;
2646     }
2647
2648     for(i=0; i < func->var_cnt; i++) {
2649         if(!ctx->is_global || !lookup_global_members(ctx->script, func->variables[i], NULL)) {
2650             DISPID id = 0;
2651
2652             hres = jsdisp_get_id(ctx->var_disp, func->variables[i], fdexNameEnsure, &id);
2653             if(FAILED(hres))
2654                 return hres;
2655         }
2656     }
2657
2658     prev_ctx = ctx->script->exec_ctx;
2659     ctx->script->exec_ctx = ctx;
2660
2661     hres = enter_bytecode(ctx->script, code, func, ei, &val);
2662     assert(ctx->script->exec_ctx == ctx);
2663     ctx->script->exec_ctx = prev_ctx;
2664     if(FAILED(hres))
2665         return hres;
2666
2667     if(retv)
2668         *retv = val;
2669     else
2670         VariantClear(&val);
2671     return S_OK;
2672 }