reactos/dll/win32/jscript/engine.c

   1 /*
   2  * Copyright 2008 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include <math.h>
  23
  24 #include "jscript.h"
  25 #include "engine.h"
  26
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  30
  31 #define EXPR_NOVAL   0x0001
  32 #define EXPR_NEWREF  0x0002
  33 #define EXPR_STRREF  0x0004
  34
  35 static inline HRESULT stat_eval(exec_ctx_t *ctx, statement_t *stat, return_type_t *rt, VARIANT *ret)
  36 {
  37     return stat->eval(ctx, stat, rt, ret);
  38 }
  39
  40 static inline HRESULT expr_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
  41 {
  42     return _expr->eval(ctx, _expr, flags, ei, ret);
  43 }
  44
  45 static void exprval_release(exprval_t *val)
  46 {
  47     switch(val->type) {
  48     case EXPRVAL_VARIANT:
  49         if(V_VT(&val->u.var) != VT_EMPTY)
  50             VariantClear(&val->u.var);
  51         return;
  52     case EXPRVAL_IDREF:
  53         if(val->u.idref.disp)
  54             IDispatch_Release(val->u.idref.disp);
  55         return;
  56     case EXPRVAL_NAMEREF:
  57         if(val->u.nameref.disp)
  58             IDispatch_Release(val->u.nameref.disp);
  59         SysFreeString(val->u.nameref.name);
  60         return;
  61     case EXPRVAL_INVALID:
  62         SysFreeString(val->u.identifier);
  63     }
  64 }
  65
  66 /* ECMA-262 3rd Edition    8.7.1 */
  67 static HRESULT exprval_value(script_ctx_t *ctx, exprval_t *val, jsexcept_t *ei, VARIANT *ret)
  68 {
  69     V_VT(ret) = VT_EMPTY;
  70
  71     switch(val->type) {
  72     case EXPRVAL_VARIANT:
  73         return VariantCopy(ret, &val->u.var);
  74     case EXPRVAL_IDREF:
  75         if(!val->u.idref.disp) {
  76             FIXME("throw ReferenceError\n");
  77             return E_FAIL;
  78         }
  79
  80         return disp_propget(ctx, val->u.idref.disp, val->u.idref.id, ret, ei, NULL/*FIXME*/);
  81     case EXPRVAL_NAMEREF:
  82         break;
  83     case EXPRVAL_INVALID:
  84         return throw_type_error(ctx, ei, IDS_UNDEFINED, val->u.identifier);
  85     }
  86
  87     ERR("type %d\n", val->type);
  88     return E_FAIL;
  89 }
  90
  91 static HRESULT exprval_to_value(script_ctx_t *ctx, exprval_t *val, jsexcept_t *ei, VARIANT *ret)
  92 {
  93     if(val->type == EXPRVAL_VARIANT) {
  94         *ret = val->u.var;
  95         V_VT(&val->u.var) = VT_EMPTY;
  96         return S_OK;
  97     }
  98
  99     return exprval_value(ctx, val, ei, ret);
 100 }
 101
 102 static HRESULT exprval_to_boolean(script_ctx_t *ctx, exprval_t *exprval, jsexcept_t *ei, VARIANT_BOOL *b)
 103 {
 104     if(exprval->type != EXPRVAL_VARIANT) {
 105         VARIANT val;
 106         HRESULT hres;
 107
 108         hres = exprval_to_value(ctx, exprval, ei, &val);
 109         if(FAILED(hres))
 110             return hres;
 111
 112         hres = to_boolean(&val, b);
 113         VariantClear(&val);
 114         return hres;
 115     }
 116
 117     return to_boolean(&exprval->u.var, b);
 118 }
 119
 120 static void exprval_init(exprval_t *val)
 121 {
 122     val->type = EXPRVAL_VARIANT;
 123     V_VT(&val->u.var) = VT_EMPTY;
 124 }
 125
 126 static void exprval_set_idref(exprval_t *val, IDispatch *disp, DISPID id)
 127 {
 128     val->type = EXPRVAL_IDREF;
 129     val->u.idref.disp = disp;
 130     val->u.idref.id = id;
 131
 132     if(disp)
 133         IDispatch_AddRef(disp);
 134 }
 135
 136 HRESULT scope_push(scope_chain_t *scope, DispatchEx *obj, scope_chain_t **ret)
 137 {
 138     scope_chain_t *new_scope;
 139
 140     new_scope = heap_alloc(sizeof(scope_chain_t));
 141     if(!new_scope)
 142         return E_OUTOFMEMORY;
 143
 144     new_scope->ref = 1;
 145
 146     IDispatchEx_AddRef(_IDispatchEx_(obj));
 147     new_scope->obj = obj;
 148
 149     if(scope) {
 150         scope_addref(scope);
 151         new_scope->next = scope;
 152     }else {
 153         new_scope->next = NULL;
 154     }
 155
 156     *ret = new_scope;
 157     return S_OK;
 158 }
 159
 160 static void scope_pop(scope_chain_t **scope)
 161 {
 162     scope_chain_t *tmp;
 163
 164     tmp = *scope;
 165     *scope = tmp->next;
 166     scope_release(tmp);
 167 }
 168
 169 void scope_release(scope_chain_t *scope)
 170 {
 171     if(--scope->ref)
 172         return;
 173
 174     if(scope->next)
 175         scope_release(scope->next);
 176
 177     jsdisp_release(scope->obj);
 178     heap_free(scope);
 179 }
 180
 181 HRESULT create_exec_ctx(script_ctx_t *script_ctx, IDispatch *this_obj, DispatchEx *var_disp,
 182         scope_chain_t *scope, exec_ctx_t **ret)
 183 {
 184     exec_ctx_t *ctx;
 185
 186     ctx = heap_alloc_zero(sizeof(exec_ctx_t));
 187     if(!ctx)
 188         return E_OUTOFMEMORY;
 189
 190     ctx->ref = 1;
 191
 192     if(this_obj)
 193         ctx->this_obj = this_obj;
 194     else if(script_ctx->host_global)
 195         ctx->this_obj = script_ctx->host_global;
 196     else
 197         ctx->this_obj = (IDispatch*)_IDispatchEx_(script_ctx->global);
 198     IDispatch_AddRef(ctx->this_obj);
 199
 200     IDispatchEx_AddRef(_IDispatchEx_(var_disp));
 201     ctx->var_disp = var_disp;
 202
 203     if(scope) {
 204         scope_addref(scope);
 205         ctx->scope_chain = scope;
 206     }
 207
 208     *ret = ctx;
 209     return S_OK;
 210 }
 211
 212 void exec_release(exec_ctx_t *ctx)
 213 {
 214     if(--ctx->ref)
 215         return;
 216
 217     if(ctx->scope_chain)
 218         scope_release(ctx->scope_chain);
 219     if(ctx->var_disp)
 220         jsdisp_release(ctx->var_disp);
 221     if(ctx->this_obj)
 222         IDispatch_Release(ctx->this_obj);
 223     heap_free(ctx);
 224 }
 225
 226 static HRESULT disp_get_id(script_ctx_t *ctx, IDispatch *disp, BSTR name, DWORD flags, DISPID *id)
 227 {
 228     IDispatchEx *dispex;
 229     HRESULT hres;
 230
 231     hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
 232     if(FAILED(hres)) {
 233         TRACE("unsing IDispatch\n");
 234
 235         *id = 0;
 236         return IDispatch_GetIDsOfNames(disp, &IID_NULL, &name, 1, 0, id);
 237     }
 238
 239     *id = 0;
 240     hres = IDispatchEx_GetDispID(dispex, name, make_grfdex(ctx, flags|fdexNameCaseSensitive), id);
 241     IDispatchEx_Release(dispex);
 242     return hres;
 243 }
 244
 245 /* ECMA-262 3rd Edition    8.7.2 */
 246 static HRESULT put_value(script_ctx_t *ctx, exprval_t *ref, VARIANT *v, jsexcept_t *ei)
 247 {
 248     if(ref->type != EXPRVAL_IDREF)
 249         return throw_reference_error(ctx, ei, IDS_ILLEGAL_ASSIGN, NULL);
 250
 251     return disp_propput(ctx, ref->u.idref.disp, ref->u.idref.id, v, ei, NULL/*FIXME*/);
 252 }
 253
 254 static inline BOOL is_null(const VARIANT *v)
 255 {
 256     return V_VT(v) == VT_NULL || (V_VT(v) == VT_DISPATCH && !V_DISPATCH(v));
 257 }
 258
 259 static HRESULT disp_cmp(IDispatch *disp1, IDispatch *disp2, BOOL *ret)
 260 {
 261     IObjectIdentity *identity;
 262     IUnknown *unk1, *unk2;
 263     HRESULT hres;
 264
 265     if(disp1 == disp2) {
 266         *ret = TRUE;
 267         return S_OK;
 268     }
 269
 270     if(!disp1 || !disp2) {
 271         *ret = FALSE;
 272         return S_OK;
 273     }
 274
 275     hres = IDispatch_QueryInterface(disp1, &IID_IUnknown, (void**)&unk1);
 276     if(FAILED(hres))
 277         return hres;
 278
 279     hres = IDispatch_QueryInterface(disp2, &IID_IUnknown, (void**)&unk2);
 280     if(FAILED(hres)) {
 281         IUnknown_Release(unk1);
 282         return hres;
 283     }
 284
 285     if(unk1 == unk2) {
 286         *ret = TRUE;
 287     }else {
 288         hres = IUnknown_QueryInterface(unk1, &IID_IObjectIdentity, (void**)&identity);
 289         if(SUCCEEDED(hres)) {
 290             hres = IObjectIdentity_IsEqualObject(identity, unk2);
 291             IObjectIdentity_Release(identity);
 292             *ret = hres == S_OK;
 293         }else {
 294             *ret = FALSE;
 295         }
 296     }
 297
 298     IUnknown_Release(unk1);
 299     IUnknown_Release(unk2);
 300     return S_OK;
 301 }
 302
 303 /* ECMA-262 3rd Edition    11.9.6 */
 304 static HRESULT equal2_values(VARIANT *lval, VARIANT *rval, BOOL *ret)
 305 {
 306     TRACE("\n");
 307
 308     if(V_VT(lval) != V_VT(rval)) {
 309         if(is_num_vt(V_VT(lval)) && is_num_vt(V_VT(rval)))
 310             *ret = num_val(lval) == num_val(rval);
 311         else if(is_null(lval))
 312             *ret = is_null(rval);
 313         else
 314             *ret = FALSE;
 315         return S_OK;
 316     }
 317
 318     switch(V_VT(lval)) {
 319     case VT_EMPTY:
 320     case VT_NULL:
 321         *ret = VARIANT_TRUE;
 322         break;
 323     case VT_I4:
 324         *ret = V_I4(lval) == V_I4(rval);
 325         break;
 326     case VT_R8:
 327         *ret = V_R8(lval) == V_R8(rval);
 328         break;
 329     case VT_BSTR:
 330         if(!V_BSTR(lval))
 331             *ret = SysStringLen(V_BSTR(rval))?FALSE:TRUE;
 332         else if(!V_BSTR(rval))
 333             *ret = SysStringLen(V_BSTR(lval))?FALSE:TRUE;
 334         else
 335             *ret = !strcmpW(V_BSTR(lval), V_BSTR(rval));
 336         break;
 337     case VT_DISPATCH:
 338         return disp_cmp(V_DISPATCH(lval), V_DISPATCH(rval), ret);
 339     case VT_BOOL:
 340         *ret = !V_BOOL(lval) == !V_BOOL(rval);
 341         break;
 342     default:
 343         FIXME("unimplemented vt %d\n", V_VT(lval));
 344         return E_NOTIMPL;
 345     }
 346
 347     return S_OK;
 348 }
 349
 350 static HRESULT literal_to_var(script_ctx_t *ctx, literal_t *literal, VARIANT *v)
 351 {
 352     switch(literal->type) {
 353     case LT_NULL:
 354         V_VT(v) = VT_NULL;
 355         break;
 356     case LT_INT:
 357         V_VT(v) = VT_I4;
 358         V_I4(v) = literal->u.lval;
 359         break;
 360     case LT_DOUBLE:
 361         V_VT(v) = VT_R8;
 362         V_R8(v) = literal->u.dval;
 363         break;
 364     case LT_STRING: {
 365         BSTR str = SysAllocString(literal->u.wstr);
 366         if(!str)
 367             return E_OUTOFMEMORY;
 368
 369         V_VT(v) = VT_BSTR;
 370         V_BSTR(v) = str;
 371         break;
 372     }
 373     case LT_BOOL:
 374         V_VT(v) = VT_BOOL;
 375         V_BOOL(v) = literal->u.bval;
 376         break;
 377     case LT_REGEXP: {
 378         DispatchEx *regexp;
 379         HRESULT hres;
 380
 381         hres = create_regexp(ctx, literal->u.regexp.str, literal->u.regexp.str_len,
 382                              literal->u.regexp.flags, &regexp);
 383         if(FAILED(hres))
 384             return hres;
 385
 386         V_VT(v) = VT_DISPATCH;
 387         V_DISPATCH(v) = (IDispatch*)_IDispatchEx_(regexp);
 388     }
 389     }
 390
 391     return S_OK;
 392 }
 393
 394 static BOOL lookup_global_members(script_ctx_t *ctx, BSTR identifier, exprval_t *ret)
 395 {
 396     named_item_t *item;
 397     DISPID id;
 398     HRESULT hres;
 399
 400     for(item = ctx->named_items; item; item = item->next) {
 401         if(item->flags & SCRIPTITEM_GLOBALMEMBERS) {
 402             hres = disp_get_id(ctx, item->disp, identifier, 0, &id);
 403             if(SUCCEEDED(hres)) {
 404                 if(ret)
 405                     exprval_set_idref(ret, item->disp, id);
 406                 return TRUE;
 407             }
 408         }
 409     }
 410
 411     return FALSE;
 412 }
 413
 414 HRESULT exec_source(exec_ctx_t *ctx, parser_ctx_t *parser, source_elements_t *source, exec_type_t exec_type,
 415         jsexcept_t *ei, VARIANT *retv)
 416 {
 417     script_ctx_t *script = parser->script;
 418     function_declaration_t *func;
 419     parser_ctx_t *prev_parser;
 420     var_list_t *var;
 421     VARIANT val, tmp;
 422     statement_t *stat;
 423     exec_ctx_t *prev_ctx;
 424     return_type_t rt;
 425     HRESULT hres = S_OK;
 426
 427     for(func = source->functions; func; func = func->next) {
 428         DispatchEx *func_obj;
 429         VARIANT var;
 430
 431         hres = create_source_function(parser, func->expr->parameter_list, func->expr->source_elements,
 432                 ctx->scope_chain, func->expr->src_str, func->expr->src_len, &func_obj);
 433         if(FAILED(hres))
 434             return hres;
 435
 436         V_VT(&var) = VT_DISPATCH;
 437         V_DISPATCH(&var) = (IDispatch*)_IDispatchEx_(func_obj);
 438         hres = jsdisp_propput_name(ctx->var_disp, func->expr->identifier, &var, ei, NULL);
 439         jsdisp_release(func_obj);
 440         if(FAILED(hres))
 441             return hres;
 442     }
 443
 444     for(var = source->variables; var; var = var->next) {
 445         DISPID id = 0;
 446         BSTR name;
 447
 448         name = SysAllocString(var->identifier);
 449         if(!name)
 450             return E_OUTOFMEMORY;
 451
 452         if(!lookup_global_members(parser->script, name, NULL))
 453             hres = jsdisp_get_id(ctx->var_disp, var->identifier, fdexNameEnsure, &id);
 454         SysFreeString(name);
 455         if(FAILED(hres))
 456             return hres;
 457     }
 458
 459     prev_ctx = script->exec_ctx;
 460     script->exec_ctx = ctx;
 461
 462     prev_parser = ctx->parser;
 463     ctx->parser = parser;
 464
 465     V_VT(&val) = VT_EMPTY;
 466     memset(&rt, 0, sizeof(rt));
 467     rt.type = RT_NORMAL;
 468
 469     for(stat = source->statement; stat; stat = stat->next) {
 470         hres = stat_eval(ctx, stat, &rt, &tmp);
 471         if(FAILED(hres))
 472             break;
 473
 474         VariantClear(&val);
 475         val = tmp;
 476         if(rt.type != RT_NORMAL)
 477             break;
 478     }
 479
 480     script->exec_ctx = prev_ctx;
 481     ctx->parser = prev_parser;
 482
 483     if(rt.type != RT_NORMAL && rt.type != RT_RETURN) {
 484         FIXME("wrong rt %d\n", rt.type);
 485         hres = E_FAIL;
 486     }
 487
 488     *ei = rt.ei;
 489     if(FAILED(hres)) {
 490         VariantClear(&val);
 491         return hres;
 492     }
 493
 494     if(retv && (exec_type == EXECT_EVAL || rt.type == RT_RETURN))
 495         *retv = val;
 496     else {
 497         if (retv) {
 498             VariantInit(retv);
 499         }
 500         VariantClear(&val);
 501     }
 502     return S_OK;
 503 }
 504
 505 /* ECMA-262 3rd Edition    10.1.4 */
 506 static HRESULT identifier_eval(exec_ctx_t *ctx, BSTR identifier, DWORD flags, jsexcept_t *ei, exprval_t *ret)
 507 {
 508     scope_chain_t *scope;
 509     named_item_t *item;
 510     DISPID id = 0;
 511     HRESULT hres;
 512
 513     TRACE("%s\n", debugstr_w(identifier));
 514
 515     for(scope = ctx->scope_chain; scope; scope = scope->next) {
 516         hres = jsdisp_get_id(scope->obj, identifier, 0, &id);
 517         if(SUCCEEDED(hres))
 518             break;
 519     }
 520
 521     if(scope) {
 522         exprval_set_idref(ret, (IDispatch*)_IDispatchEx_(scope->obj), id);
 523         return S_OK;
 524     }
 525
 526     hres = jsdisp_get_id(ctx->parser->script->global, identifier, 0, &id);
 527     if(SUCCEEDED(hres)) {
 528         exprval_set_idref(ret, (IDispatch*)_IDispatchEx_(ctx->parser->script->global), id);
 529         return S_OK;
 530     }
 531
 532     for(item = ctx->parser->script->named_items; item; item = item->next) {
 533         if((item->flags & SCRIPTITEM_ISVISIBLE) && !strcmpW(item->name, identifier)) {
 534             if(!item->disp) {
 535                 IUnknown *unk;
 536
 537                 if(!ctx->parser->script->site)
 538                     break;
 539
 540                 hres = IActiveScriptSite_GetItemInfo(ctx->parser->script->site, identifier,
 541                                                      SCRIPTINFO_IUNKNOWN, &unk, NULL);
 542                 if(FAILED(hres)) {
 543                     WARN("GetItemInfo failed: %08x\n", hres);
 544                     break;
 545                 }
 546
 547                 hres = IUnknown_QueryInterface(unk, &IID_IDispatch, (void**)&item->disp);
 548                 IUnknown_Release(unk);
 549                 if(FAILED(hres)) {
 550                     WARN("object does not implement IDispatch\n");
 551                     break;
 552                 }
 553             }
 554
 555             ret->type = EXPRVAL_VARIANT;
 556             V_VT(&ret->u.var) = VT_DISPATCH;
 557             V_DISPATCH(&ret->u.var) = item->disp;
 558             IDispatch_AddRef(item->disp);
 559             return S_OK;
 560         }
 561     }
 562
 563     if(lookup_global_members(ctx->parser->script, identifier, ret))
 564         return S_OK;
 565
 566     if(flags & EXPR_NEWREF) {
 567         hres = jsdisp_get_id(ctx->parser->script->global, identifier, fdexNameEnsure, &id);
 568         if(FAILED(hres))
 569             return hres;
 570
 571         exprval_set_idref(ret, (IDispatch*)_IDispatchEx_(ctx->parser->script->global), id);
 572         return S_OK;
 573     }
 574
 575     ret->type = EXPRVAL_INVALID;
 576     ret->u.identifier = SysAllocString(identifier);
 577     if(!ret->u.identifier)
 578         return E_OUTOFMEMORY;
 579
 580     return S_OK;
 581 }
 582
 583 /* ECMA-262 3rd Edition    12.1 */
 584 HRESULT block_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 585 {
 586     block_statement_t *stat = (block_statement_t*)_stat;
 587     VARIANT val, tmp;
 588     statement_t *iter;
 589     HRESULT hres = S_OK;
 590
 591     TRACE("\n");
 592
 593     V_VT(&val) = VT_EMPTY;
 594     for(iter = stat->stat_list; iter; iter = iter->next) {
 595         hres = stat_eval(ctx, iter, rt, &tmp);
 596         if(FAILED(hres))
 597             break;
 598
 599         VariantClear(&val);
 600         val = tmp;
 601         if(rt->type != RT_NORMAL)
 602             break;
 603     }
 604
 605     if(FAILED(hres)) {
 606         VariantClear(&val);
 607         return hres;
 608     }
 609
 610     *ret = val;
 611     return S_OK;
 612 }
 613
 614 /* ECMA-262 3rd Edition    12.2 */
 615 static HRESULT variable_list_eval(exec_ctx_t *ctx, variable_declaration_t *var_list, jsexcept_t *ei)
 616 {
 617     variable_declaration_t *iter;
 618     HRESULT hres = S_OK;
 619
 620     for(iter = var_list; iter; iter = iter->next) {
 621         exprval_t exprval;
 622         VARIANT val;
 623
 624         if(!iter->expr)
 625             continue;
 626
 627         hres = expr_eval(ctx, iter->expr, 0, ei, &exprval);
 628         if(FAILED(hres))
 629             break;
 630
 631         hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
 632         exprval_release(&exprval);
 633         if(FAILED(hres))
 634             break;
 635
 636         hres = jsdisp_propput_name(ctx->var_disp, iter->identifier, &val, ei, NULL/*FIXME*/);
 637         VariantClear(&val);
 638         if(FAILED(hres))
 639             break;
 640     }
 641
 642     return hres;
 643 }
 644
 645 /* ECMA-262 3rd Edition    12.2 */
 646 HRESULT var_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 647 {
 648     var_statement_t *stat = (var_statement_t*)_stat;
 649     HRESULT hres;
 650
 651     TRACE("\n");
 652
 653     hres = variable_list_eval(ctx, stat->variable_list, &rt->ei);
 654     if(FAILED(hres))
 655         return hres;
 656
 657     V_VT(ret) = VT_EMPTY;
 658     return S_OK;
 659 }
 660
 661 /* ECMA-262 3rd Edition    12.3 */
 662 HRESULT empty_statement_eval(exec_ctx_t *ctx, statement_t *stat, return_type_t *rt, VARIANT *ret)
 663 {
 664     TRACE("\n");
 665
 666     V_VT(ret) = VT_EMPTY;
 667     return S_OK;
 668 }
 669
 670 /* ECMA-262 3rd Edition    12.4 */
 671 HRESULT expression_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 672 {
 673     expression_statement_t *stat = (expression_statement_t*)_stat;
 674     exprval_t exprval;
 675     VARIANT val;
 676     HRESULT hres;
 677
 678     TRACE("\n");
 679
 680     hres = expr_eval(ctx, stat->expr, EXPR_NOVAL, &rt->ei, &exprval);
 681     if(FAILED(hres))
 682         return hres;
 683
 684     hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &val);
 685     exprval_release(&exprval);
 686     if(FAILED(hres))
 687         return hres;
 688
 689     *ret = val;
 690     TRACE("= %s\n", debugstr_variant(ret));
 691     return S_OK;
 692 }
 693
 694 /* ECMA-262 3rd Edition    12.5 */
 695 HRESULT if_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 696 {
 697     if_statement_t *stat = (if_statement_t*)_stat;
 698     exprval_t exprval;
 699     VARIANT_BOOL b;
 700     HRESULT hres;
 701
 702     TRACE("\n");
 703
 704     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
 705     if(FAILED(hres))
 706         return hres;
 707
 708     hres = exprval_to_boolean(ctx->parser->script, &exprval, &rt->ei, &b);
 709     exprval_release(&exprval);
 710     if(FAILED(hres))
 711         return hres;
 712
 713     if(b)
 714         hres = stat_eval(ctx, stat->if_stat, rt, ret);
 715     else if(stat->else_stat)
 716         hres = stat_eval(ctx, stat->else_stat, rt, ret);
 717     else
 718         V_VT(ret) = VT_EMPTY;
 719
 720     return hres;
 721 }
 722
 723 /* ECMA-262 3rd Edition    12.6.2 */
 724 HRESULT while_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 725 {
 726     while_statement_t *stat = (while_statement_t*)_stat;
 727     exprval_t exprval;
 728     VARIANT val, tmp;
 729     VARIANT_BOOL b;
 730     BOOL test_expr;
 731     HRESULT hres;
 732
 733     TRACE("\n");
 734
 735     V_VT(&val) = VT_EMPTY;
 736     test_expr = !stat->do_while;
 737
 738     while(1) {
 739         if(test_expr) {
 740             hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
 741             if(FAILED(hres))
 742                 break;
 743
 744             hres = exprval_to_boolean(ctx->parser->script, &exprval, &rt->ei, &b);
 745             exprval_release(&exprval);
 746             if(FAILED(hres) || !b)
 747                 break;
 748         }else {
 749             test_expr = TRUE;
 750         }
 751
 752         hres = stat_eval(ctx, stat->statement, rt, &tmp);
 753         if(FAILED(hres))
 754             break;
 755
 756         VariantClear(&val);
 757         val = tmp;
 758
 759         if(rt->type == RT_CONTINUE)
 760             rt->type = RT_NORMAL;
 761         if(rt->type != RT_NORMAL)
 762             break;
 763     }
 764
 765     if(FAILED(hres)) {
 766         VariantClear(&val);
 767         return hres;
 768     }
 769
 770     if(rt->type == RT_BREAK)
 771         rt->type = RT_NORMAL;
 772
 773     *ret = val;
 774     return S_OK;
 775 }
 776
 777 /* ECMA-262 3rd Edition    12.6.3 */
 778 HRESULT for_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 779 {
 780     for_statement_t *stat = (for_statement_t*)_stat;
 781     VARIANT val, tmp, retv;
 782     exprval_t exprval;
 783     VARIANT_BOOL b;
 784     HRESULT hres;
 785
 786     TRACE("\n");
 787
 788     if(stat->variable_list) {
 789         hres = variable_list_eval(ctx, stat->variable_list, &rt->ei);
 790         if(FAILED(hres))
 791             return hres;
 792     }else if(stat->begin_expr) {
 793         hres = expr_eval(ctx, stat->begin_expr, EXPR_NEWREF, &rt->ei, &exprval);
 794         if(FAILED(hres))
 795             return hres;
 796
 797         hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &val);
 798         exprval_release(&exprval);
 799         if(FAILED(hres))
 800             return hres;
 801
 802         VariantClear(&val);
 803     }
 804
 805     V_VT(&retv) = VT_EMPTY;
 806
 807     while(1) {
 808         if(stat->expr) {
 809             hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
 810             if(FAILED(hres))
 811                 break;
 812
 813             hres = exprval_to_boolean(ctx->parser->script, &exprval, &rt->ei, &b);
 814             exprval_release(&exprval);
 815             if(FAILED(hres) || !b)
 816                 break;
 817         }
 818
 819         hres = stat_eval(ctx, stat->statement, rt, &tmp);
 820         if(FAILED(hres))
 821             break;
 822
 823         VariantClear(&retv);
 824         retv = tmp;
 825
 826         if(rt->type == RT_CONTINUE)
 827             rt->type = RT_NORMAL;
 828         else if(rt->type != RT_NORMAL)
 829             break;
 830
 831         if(stat->end_expr) {
 832             hres = expr_eval(ctx, stat->end_expr, 0, &rt->ei, &exprval);
 833             if(FAILED(hres))
 834                 break;
 835
 836             hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &val);
 837             exprval_release(&exprval);
 838             if(FAILED(hres))
 839                 break;
 840
 841             VariantClear(&val);
 842         }
 843     }
 844
 845     if(FAILED(hres)) {
 846         VariantClear(&retv);
 847         return hres;
 848     }
 849
 850     if(rt->type == RT_BREAK)
 851         rt->type = RT_NORMAL;
 852
 853     *ret = retv;
 854     return S_OK;
 855 }
 856
 857 /* ECMA-262 3rd Edition    12.6.4 */
 858 HRESULT forin_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 859 {
 860     forin_statement_t *stat = (forin_statement_t*)_stat;
 861     VARIANT val, name, retv, tmp;
 862     DISPID id = DISPID_STARTENUM;
 863     BSTR str, identifier = NULL;
 864     IDispatchEx *in_obj;
 865     exprval_t exprval;
 866     HRESULT hres;
 867
 868     TRACE("\n");
 869
 870     if(stat->variable) {
 871         hres = variable_list_eval(ctx, stat->variable, &rt->ei);
 872         if(FAILED(hres))
 873             return hres;
 874     }
 875
 876     hres = expr_eval(ctx, stat->in_expr, EXPR_NEWREF, &rt->ei, &exprval);
 877     if(FAILED(hres))
 878         return hres;
 879
 880     hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &val);
 881     exprval_release(&exprval);
 882     if(FAILED(hres))
 883         return hres;
 884
 885     if(V_VT(&val) != VT_DISPATCH) {
 886         TRACE("in vt %d\n", V_VT(&val));
 887         VariantClear(&val);
 888         V_VT(ret) = VT_EMPTY;
 889         return S_OK;
 890     }
 891
 892     hres = IDispatch_QueryInterface(V_DISPATCH(&val), &IID_IDispatchEx, (void**)&in_obj);
 893     IDispatch_Release(V_DISPATCH(&val));
 894     if(FAILED(hres)) {
 895         FIXME("Object doesn't support IDispatchEx\n");
 896         return E_NOTIMPL;
 897     }
 898
 899     V_VT(&retv) = VT_EMPTY;
 900
 901     if(stat->variable)
 902         identifier = SysAllocString(stat->variable->identifier);
 903
 904     while(1) {
 905         hres = IDispatchEx_GetNextDispID(in_obj, fdexEnumDefault, id, &id);
 906         if(FAILED(hres) || hres == S_FALSE)
 907             break;
 908
 909         hres = IDispatchEx_GetMemberName(in_obj, id, &str);
 910         if(FAILED(hres))
 911             break;
 912
 913         TRACE("iter %s\n", debugstr_w(str));
 914
 915         if(stat->variable)
 916             hres = identifier_eval(ctx, identifier, 0, NULL, &exprval);
 917         else
 918             hres = expr_eval(ctx, stat->expr, EXPR_NEWREF, &rt->ei, &exprval);
 919         if(SUCCEEDED(hres)) {
 920             V_VT(&name) = VT_BSTR;
 921             V_BSTR(&name) = str;
 922             hres = put_value(ctx->parser->script, &exprval, &name, &rt->ei);
 923             exprval_release(&exprval);
 924         }
 925         SysFreeString(str);
 926         if(FAILED(hres))
 927             break;
 928
 929         hres = stat_eval(ctx, stat->statement, rt, &tmp);
 930         if(FAILED(hres))
 931             break;
 932
 933         VariantClear(&retv);
 934         retv = tmp;
 935
 936         if(rt->type == RT_CONTINUE)
 937             rt->type = RT_NORMAL;
 938         else if(rt->type != RT_NORMAL)
 939             break;
 940     }
 941
 942     SysFreeString(identifier);
 943     IDispatchEx_Release(in_obj);
 944     if(FAILED(hres)) {
 945         VariantClear(&retv);
 946         return hres;
 947     }
 948
 949     if(rt->type == RT_BREAK)
 950         rt->type = RT_NORMAL;
 951
 952     *ret = retv;
 953     return S_OK;
 954 }
 955
 956 /* ECMA-262 3rd Edition    12.7 */
 957 HRESULT continue_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 958 {
 959     branch_statement_t *stat = (branch_statement_t*)_stat;
 960
 961     TRACE("\n");
 962
 963     if(stat->identifier) {
 964         FIXME("indentifier not implemented\n");
 965         return E_NOTIMPL;
 966     }
 967
 968     rt->type = RT_CONTINUE;
 969     V_VT(ret) = VT_EMPTY;
 970     return S_OK;
 971 }
 972
 973 /* ECMA-262 3rd Edition    12.8 */
 974 HRESULT break_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 975 {
 976     branch_statement_t *stat = (branch_statement_t*)_stat;
 977
 978     TRACE("\n");
 979
 980     if(stat->identifier) {
 981         FIXME("indentifier not implemented\n");
 982         return E_NOTIMPL;
 983     }
 984
 985     rt->type = RT_BREAK;
 986     V_VT(ret) = VT_EMPTY;
 987     return S_OK;
 988 }
 989
 990 /* ECMA-262 3rd Edition    12.9 */
 991 HRESULT return_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 992 {
 993     expression_statement_t *stat = (expression_statement_t*)_stat;
 994     HRESULT hres;
 995
 996     TRACE("\n");
 997
 998     if(stat->expr) {
 999         exprval_t exprval;
1000
1001         hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1002         if(FAILED(hres))
1003             return hres;
1004
1005         hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, ret);
1006         exprval_release(&exprval);
1007         if(FAILED(hres))
1008             return hres;
1009     }else {
1010         V_VT(ret) = VT_EMPTY;
1011     }
1012
1013     TRACE("= %s\n", debugstr_variant(ret));
1014     rt->type = RT_RETURN;
1015     return S_OK;
1016 }
1017
1018 /* ECMA-262 3rd Edition    12.10 */
1019 HRESULT with_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1020 {
1021     with_statement_t *stat = (with_statement_t*)_stat;
1022     exprval_t exprval;
1023     IDispatch *disp;
1024     DispatchEx *obj;
1025     VARIANT val;
1026     HRESULT hres;
1027
1028     TRACE("\n");
1029
1030     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1031     if(FAILED(hres))
1032         return hres;
1033
1034     hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &val);
1035     exprval_release(&exprval);
1036     if(FAILED(hres))
1037         return hres;
1038
1039     hres = to_object(ctx->parser->script, &val, &disp);
1040     VariantClear(&val);
1041     if(FAILED(hres))
1042         return hres;
1043
1044     obj = iface_to_jsdisp((IUnknown*)disp);
1045     IDispatch_Release(disp);
1046     if(!obj) {
1047         FIXME("disp id not jsdisp\n");
1048         return E_NOTIMPL;
1049     }
1050
1051     hres = scope_push(ctx->scope_chain, obj, &ctx->scope_chain);
1052     jsdisp_release(obj);
1053     if(FAILED(hres))
1054         return hres;
1055
1056     hres = stat_eval(ctx, stat->statement, rt, ret);
1057
1058     scope_pop(&ctx->scope_chain);
1059     return hres;
1060 }
1061
1062 /* ECMA-262 3rd Edition    12.12 */
1063 HRESULT labelled_statement_eval(exec_ctx_t *ctx, statement_t *stat, return_type_t *rt, VARIANT *ret)
1064 {
1065     FIXME("\n");
1066     return E_NOTIMPL;
1067 }
1068
1069 /* ECMA-262 3rd Edition    12.13 */
1070 HRESULT switch_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1071 {
1072     switch_statement_t *stat = (switch_statement_t*)_stat;
1073     case_clausule_t *iter, *default_clausule = NULL;
1074     statement_t *stat_iter;
1075     VARIANT val, cval;
1076     exprval_t exprval;
1077     BOOL b;
1078     HRESULT hres;
1079
1080     TRACE("\n");
1081
1082     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1083     if(FAILED(hres))
1084         return hres;
1085
1086     hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &val);
1087     exprval_release(&exprval);
1088     if(FAILED(hres))
1089         return hres;
1090
1091     for(iter = stat->case_list; iter; iter = iter->next) {
1092         if(!iter->expr) {
1093             default_clausule = iter;
1094             continue;
1095         }
1096
1097         hres = expr_eval(ctx, iter->expr, 0, &rt->ei, &exprval);
1098         if(FAILED(hres))
1099             break;
1100
1101         hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &cval);
1102         exprval_release(&exprval);
1103         if(FAILED(hres))
1104             break;
1105
1106         hres = equal2_values(&val, &cval, &b);
1107         VariantClear(&cval);
1108         if(FAILED(hres) || b)
1109             break;
1110     }
1111
1112     VariantClear(&val);
1113     if(FAILED(hres))
1114         return hres;
1115
1116     if(!iter)
1117         iter = default_clausule;
1118
1119     V_VT(&val) = VT_EMPTY;
1120     if(iter) {
1121         VARIANT tmp;
1122
1123         for(stat_iter = iter->stat; stat_iter; stat_iter = stat_iter->next) {
1124             hres = stat_eval(ctx, stat_iter, rt, &tmp);
1125             if(FAILED(hres))
1126                 break;
1127
1128             VariantClear(&val);
1129             val = tmp;
1130
1131             if(rt->type != RT_NORMAL)
1132                 break;
1133         }
1134     }
1135
1136     if(FAILED(hres)) {
1137         VariantClear(&val);
1138         return hres;
1139     }
1140
1141     if(rt->type == RT_BREAK)
1142         rt->type = RT_NORMAL;
1143
1144     *ret = val;
1145     return S_OK;
1146 }
1147
1148 /* ECMA-262 3rd Edition    12.13 */
1149 HRESULT throw_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1150 {
1151     expression_statement_t *stat = (expression_statement_t*)_stat;
1152     exprval_t exprval;
1153     VARIANT val;
1154     HRESULT hres;
1155
1156     TRACE("\n");
1157
1158     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1159     if(FAILED(hres))
1160         return hres;
1161
1162     hres = exprval_to_value(ctx->parser->script, &exprval, &rt->ei, &val);
1163     exprval_release(&exprval);
1164     if(FAILED(hres))
1165         return hres;
1166
1167     rt->ei.var = val;
1168     return DISP_E_EXCEPTION;
1169 }
1170
1171 /* ECMA-262 3rd Edition    12.14 */
1172 static HRESULT catch_eval(exec_ctx_t *ctx, catch_block_t *block, return_type_t *rt, VARIANT *ret)
1173 {
1174     DispatchEx *var_disp;
1175     VARIANT ex, val;
1176     HRESULT hres;
1177
1178     ex = rt->ei.var;
1179     memset(&rt->ei, 0, sizeof(jsexcept_t));
1180
1181     hres = create_dispex(ctx->parser->script, NULL, NULL, &var_disp);
1182     if(SUCCEEDED(hres)) {
1183         hres = jsdisp_propput_name(var_disp, block->identifier, &ex, &rt->ei, NULL/*FIXME*/);
1184         if(SUCCEEDED(hres)) {
1185             hres = scope_push(ctx->scope_chain, var_disp, &ctx->scope_chain);
1186             if(SUCCEEDED(hres)) {
1187                 hres = stat_eval(ctx, block->statement, rt, &val);
1188                 scope_pop(&ctx->scope_chain);
1189             }
1190         }
1191
1192         jsdisp_release(var_disp);
1193     }
1194
1195     VariantClear(&ex);
1196     if(FAILED(hres))
1197         return hres;
1198
1199     *ret = val;
1200     return S_OK;
1201 }
1202
1203 /* ECMA-262 3rd Edition    12.14 */
1204 HRESULT try_statement_eval(exec_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1205 {
1206     try_statement_t *stat = (try_statement_t*)_stat;
1207     VARIANT val;
1208     HRESULT hres;
1209
1210     TRACE("\n");
1211
1212     hres = stat_eval(ctx, stat->try_statement, rt, &val);
1213     if(FAILED(hres)) {
1214         TRACE("EXCEPTION\n");
1215         if(!stat->catch_block)
1216             return hres;
1217
1218         hres = catch_eval(ctx, stat->catch_block, rt, &val);
1219         if(FAILED(hres))
1220             return hres;
1221     }
1222
1223     if(stat->finally_statement) {
1224         VariantClear(&val);
1225         hres = stat_eval(ctx, stat->finally_statement, rt, &val);
1226         if(FAILED(hres))
1227             return hres;
1228     }
1229
1230     *ret = val;
1231     return S_OK;
1232 }
1233
1234 static HRESULT return_bool(exprval_t *ret, DWORD b)
1235 {
1236     ret->type = EXPRVAL_VARIANT;
1237     V_VT(&ret->u.var) = VT_BOOL;
1238     V_BOOL(&ret->u.var) = b ? VARIANT_TRUE : VARIANT_FALSE;
1239
1240     return S_OK;
1241 }
1242
1243 static HRESULT get_binary_expr_values(exec_ctx_t *ctx, binary_expression_t *expr, jsexcept_t *ei, VARIANT *lval, VARIANT *rval)
1244 {
1245     exprval_t exprval;
1246     HRESULT hres;
1247
1248     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1249     if(FAILED(hres))
1250         return hres;
1251
1252     hres = exprval_to_value(ctx->parser->script, &exprval, ei, lval);
1253     exprval_release(&exprval);
1254     if(FAILED(hres))
1255         return hres;
1256
1257     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
1258     if(SUCCEEDED(hres)) {
1259         hres = exprval_to_value(ctx->parser->script, &exprval, ei, rval);
1260         exprval_release(&exprval);
1261     }
1262
1263     if(FAILED(hres)) {
1264         VariantClear(lval);
1265         return hres;
1266     }
1267
1268     return S_OK;
1269 }
1270
1271 typedef HRESULT (*oper_t)(exec_ctx_t*,VARIANT*,VARIANT*,jsexcept_t*,VARIANT*);
1272
1273 static HRESULT binary_expr_eval(exec_ctx_t *ctx, binary_expression_t *expr, oper_t oper, jsexcept_t *ei,
1274         exprval_t *ret)
1275 {
1276     VARIANT lval, rval, retv;
1277     HRESULT hres;
1278
1279     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
1280     if(FAILED(hres))
1281         return hres;
1282
1283     hres = oper(ctx, &lval, &rval, ei, &retv);
1284     VariantClear(&lval);
1285     VariantClear(&rval);
1286     if(FAILED(hres))
1287         return hres;
1288
1289     ret->type = EXPRVAL_VARIANT;
1290     ret->u.var = retv;
1291     return S_OK;
1292 }
1293
1294 /* ECMA-262 3rd Edition    11.13.2 */
1295 static HRESULT assign_oper_eval(exec_ctx_t *ctx, expression_t *lexpr, expression_t *rexpr, oper_t oper,
1296                                 jsexcept_t *ei, exprval_t *ret)
1297 {
1298     VARIANT retv, lval, rval;
1299     exprval_t exprval, exprvalr;
1300     HRESULT hres;
1301
1302     hres = expr_eval(ctx, lexpr, EXPR_NEWREF, ei, &exprval);
1303     if(FAILED(hres))
1304         return hres;
1305
1306     hres = exprval_value(ctx->parser->script, &exprval, ei, &lval);
1307     if(SUCCEEDED(hres)) {
1308         hres = expr_eval(ctx, rexpr, 0, ei, &exprvalr);
1309         if(SUCCEEDED(hres)) {
1310             hres = exprval_value(ctx->parser->script, &exprvalr, ei, &rval);
1311             exprval_release(&exprvalr);
1312         }
1313         if(SUCCEEDED(hres)) {
1314             hres = oper(ctx, &lval, &rval, ei, &retv);
1315             VariantClear(&rval);
1316         }
1317         VariantClear(&lval);
1318     }
1319
1320     if(SUCCEEDED(hres)) {
1321         hres = put_value(ctx->parser->script, &exprval, &retv, ei);
1322         if(FAILED(hres))
1323             VariantClear(&retv);
1324     }
1325     exprval_release(&exprval);
1326
1327     if(FAILED(hres))
1328         return hres;
1329
1330     ret->type = EXPRVAL_VARIANT;
1331     ret->u.var = retv;
1332     return S_OK;
1333 }
1334
1335 /* ECMA-262 3rd Edition    13 */
1336 HRESULT function_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1337 {
1338     function_expression_t *expr = (function_expression_t*)_expr;
1339     VARIANT var;
1340     HRESULT hres;
1341
1342     TRACE("\n");
1343
1344     if(expr->identifier) {
1345         hres = jsdisp_propget_name(ctx->var_disp, expr->identifier, &var, ei, NULL/*FIXME*/);
1346         if(FAILED(hres))
1347             return hres;
1348     }else {
1349         DispatchEx *dispex;
1350
1351         hres = create_source_function(ctx->parser, expr->parameter_list, expr->source_elements, ctx->scope_chain,
1352                 expr->src_str, expr->src_len, &dispex);
1353         if(FAILED(hres))
1354             return hres;
1355
1356         V_VT(&var) = VT_DISPATCH;
1357         V_DISPATCH(&var) = (IDispatch*)_IDispatchEx_(dispex);
1358     }
1359
1360     ret->type = EXPRVAL_VARIANT;
1361     ret->u.var = var;
1362     return S_OK;
1363 }
1364
1365 /* ECMA-262 3rd Edition    11.12 */
1366 HRESULT conditional_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1367 {
1368     conditional_expression_t *expr = (conditional_expression_t*)_expr;
1369     exprval_t exprval;
1370     VARIANT_BOOL b;
1371     HRESULT hres;
1372
1373     TRACE("\n");
1374
1375     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1376     if(FAILED(hres))
1377         return hres;
1378
1379     hres = exprval_to_boolean(ctx->parser->script, &exprval, ei, &b);
1380     exprval_release(&exprval);
1381     if(FAILED(hres))
1382         return hres;
1383
1384     return expr_eval(ctx, b ? expr->true_expression : expr->false_expression, flags, ei, ret);
1385 }
1386
1387 /* ECMA-262 3rd Edition    11.2.1 */
1388 HRESULT array_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1389 {
1390     array_expression_t *expr = (array_expression_t*)_expr;
1391     exprval_t exprval;
1392     VARIANT member, val;
1393     DISPID id;
1394     BSTR str;
1395     IDispatch *obj = NULL;
1396     HRESULT hres;
1397
1398     TRACE("\n");
1399
1400     hres = expr_eval(ctx, expr->member_expr, 0, ei, &exprval);
1401     if(FAILED(hres))
1402         return hres;
1403
1404     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &member);
1405     exprval_release(&exprval);
1406     if(FAILED(hres))
1407         return hres;
1408
1409     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
1410     if(SUCCEEDED(hres)) {
1411         hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
1412         exprval_release(&exprval);
1413     }
1414
1415     if(SUCCEEDED(hres)) {
1416         hres = to_object(ctx->parser->script, &member, &obj);
1417         if(FAILED(hres))
1418             VariantClear(&val);
1419     }
1420     VariantClear(&member);
1421     if(SUCCEEDED(hres)) {
1422         hres = to_string(ctx->parser->script, &val, ei, &str);
1423         VariantClear(&val);
1424         if(SUCCEEDED(hres)) {
1425             if(flags & EXPR_STRREF) {
1426                 ret->type = EXPRVAL_NAMEREF;
1427                 ret->u.nameref.disp = obj;
1428                 ret->u.nameref.name = str;
1429                 return S_OK;
1430             }
1431
1432             hres = disp_get_id(ctx->parser->script, obj, str, flags & EXPR_NEWREF ? fdexNameEnsure : 0, &id);
1433             SysFreeString(str);
1434         }
1435
1436         if(SUCCEEDED(hres)) {
1437             exprval_set_idref(ret, obj, id);
1438         }else if(!(flags & EXPR_NEWREF) && hres == DISP_E_UNKNOWNNAME) {
1439             exprval_init(ret);
1440             hres = S_OK;
1441         }
1442
1443         IDispatch_Release(obj);
1444     }
1445
1446     return hres;
1447 }
1448
1449 /* ECMA-262 3rd Edition    11.2.1 */
1450 HRESULT member_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1451 {
1452     member_expression_t *expr = (member_expression_t*)_expr;
1453     IDispatch *obj = NULL;
1454     exprval_t exprval;
1455     VARIANT member;
1456     DISPID id;
1457     BSTR str;
1458     HRESULT hres;
1459
1460     TRACE("\n");
1461
1462     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1463     if(FAILED(hres))
1464         return hres;
1465
1466     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &member);
1467     exprval_release(&exprval);
1468     if(FAILED(hres))
1469         return hres;
1470
1471     hres = to_object(ctx->parser->script, &member, &obj);
1472     VariantClear(&member);
1473     if(FAILED(hres))
1474         return hres;
1475
1476     str = SysAllocString(expr->identifier);
1477     if(flags & EXPR_STRREF) {
1478         ret->type = EXPRVAL_NAMEREF;
1479         ret->u.nameref.disp = obj;
1480         ret->u.nameref.name = str;
1481         return S_OK;
1482     }
1483
1484     hres = disp_get_id(ctx->parser->script, obj, str, flags & EXPR_NEWREF ? fdexNameEnsure : 0, &id);
1485     SysFreeString(str);
1486     if(SUCCEEDED(hres)) {
1487         exprval_set_idref(ret, obj, id);
1488     }else if(!(flags & EXPR_NEWREF) && hres == DISP_E_UNKNOWNNAME) {
1489         exprval_init(ret);
1490         hres = S_OK;
1491     }
1492
1493     IDispatch_Release(obj);
1494     return hres;
1495 }
1496
1497 static void free_dp(DISPPARAMS *dp)
1498 {
1499     DWORD i;
1500
1501     for(i=0; i < dp->cArgs; i++)
1502         VariantClear(dp->rgvarg+i);
1503     heap_free(dp->rgvarg);
1504 }
1505
1506 static HRESULT args_to_param(exec_ctx_t *ctx, argument_t *args, jsexcept_t *ei, DISPPARAMS *dp)
1507 {
1508     VARIANTARG *vargs;
1509     exprval_t exprval;
1510     argument_t *iter;
1511     DWORD cnt = 0, i;
1512     HRESULT hres = S_OK;
1513
1514     memset(dp, 0, sizeof(*dp));
1515     if(!args)
1516         return S_OK;
1517
1518     for(iter = args; iter; iter = iter->next)
1519         cnt++;
1520
1521     vargs = heap_alloc_zero(cnt * sizeof(*vargs));
1522     if(!vargs)
1523         return E_OUTOFMEMORY;
1524
1525     for(i = cnt, iter = args; iter; iter = iter->next) {
1526         hres = expr_eval(ctx, iter->expr, 0, ei, &exprval);
1527         if(FAILED(hres))
1528             break;
1529
1530         hres = exprval_to_value(ctx->parser->script, &exprval, ei, vargs + (--i));
1531         exprval_release(&exprval);
1532         if(FAILED(hres))
1533             break;
1534     }
1535
1536     if(FAILED(hres)) {
1537         free_dp(dp);
1538         return hres;
1539     }
1540
1541     dp->rgvarg = vargs;
1542     dp->cArgs = cnt;
1543     return S_OK;
1544 }
1545
1546 /* ECMA-262 3rd Edition    11.2.2 */
1547 HRESULT new_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1548 {
1549     call_expression_t *expr = (call_expression_t*)_expr;
1550     exprval_t exprval;
1551     VARIANT constr, var;
1552     DISPPARAMS dp;
1553     HRESULT hres;
1554
1555     TRACE("\n");
1556
1557     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1558     if(FAILED(hres))
1559         return hres;
1560
1561     hres = args_to_param(ctx, expr->argument_list, ei, &dp);
1562     if(SUCCEEDED(hres))
1563         hres = exprval_to_value(ctx->parser->script, &exprval, ei, &constr);
1564     exprval_release(&exprval);
1565     if(FAILED(hres))
1566         return hres;
1567
1568     if(V_VT(&constr) != VT_DISPATCH) {
1569         FIXME("throw TypeError\n");
1570         VariantClear(&constr);
1571         return E_FAIL;
1572     }
1573
1574     hres = disp_call(ctx->parser->script, V_DISPATCH(&constr), DISPID_VALUE,
1575                      DISPATCH_CONSTRUCT, &dp, &var, ei, NULL/*FIXME*/);
1576     IDispatch_Release(V_DISPATCH(&constr));
1577     free_dp(&dp);
1578     if(FAILED(hres))
1579         return hres;
1580
1581     ret->type = EXPRVAL_VARIANT;
1582     ret->u.var = var;
1583     return S_OK;
1584 }
1585
1586 /* ECMA-262 3rd Edition    11.2.3 */
1587 HRESULT call_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1588 {
1589     call_expression_t *expr = (call_expression_t*)_expr;
1590     VARIANT var;
1591     exprval_t exprval;
1592     DISPPARAMS dp;
1593     HRESULT hres;
1594
1595     TRACE("\n");
1596
1597     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1598     if(FAILED(hres))
1599         return hres;
1600
1601     hres = args_to_param(ctx, expr->argument_list, ei, &dp);
1602     if(SUCCEEDED(hres)) {
1603         switch(exprval.type) {
1604         case EXPRVAL_VARIANT:
1605             if(V_VT(&exprval.u.var) == VT_DISPATCH)
1606                 hres = disp_call(ctx->parser->script, V_DISPATCH(&exprval.u.var), DISPID_VALUE,
1607                         DISPATCH_METHOD, &dp, flags & EXPR_NOVAL ? NULL : &var, ei, NULL/*FIXME*/);
1608             else
1609                 hres = throw_type_error(ctx->parser->script, ei, IDS_NO_PROPERTY, NULL);
1610             break;
1611         case EXPRVAL_IDREF:
1612             hres = disp_call(ctx->parser->script, exprval.u.idref.disp, exprval.u.idref.id,
1613                     DISPATCH_METHOD, &dp, flags & EXPR_NOVAL ? NULL : &var, ei, NULL/*FIXME*/);
1614             break;
1615         case EXPRVAL_INVALID:
1616             hres = throw_type_error(ctx->parser->script, ei, IDS_OBJECT_EXPECTED, NULL);
1617             break;
1618         default:
1619             FIXME("unimplemented type %d\n", exprval.type);
1620             hres = E_NOTIMPL;
1621         }
1622
1623         free_dp(&dp);
1624     }
1625
1626     exprval_release(&exprval);
1627     if(FAILED(hres))
1628         return hres;
1629
1630     ret->type = EXPRVAL_VARIANT;
1631     if(flags & EXPR_NOVAL) {
1632         V_VT(&ret->u.var) = VT_EMPTY;
1633     }else {
1634         TRACE("= %s\n", debugstr_variant(&var));
1635         ret->u.var = var;
1636     }
1637     return S_OK;
1638 }
1639
1640 /* ECMA-262 3rd Edition    11.1.1 */
1641 HRESULT this_expression_eval(exec_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1642 {
1643     TRACE("\n");
1644
1645     ret->type = EXPRVAL_VARIANT;
1646     V_VT(&ret->u.var) = VT_DISPATCH;
1647     V_DISPATCH(&ret->u.var) = ctx->this_obj;
1648     IDispatch_AddRef(ctx->this_obj);
1649     return S_OK;
1650 }
1651
1652 /* ECMA-262 3rd Edition    10.1.4 */
1653 HRESULT identifier_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1654 {
1655     identifier_expression_t *expr = (identifier_expression_t*)_expr;
1656     BSTR identifier;
1657     HRESULT hres;
1658
1659     TRACE("\n");
1660
1661     identifier = SysAllocString(expr->identifier);
1662     if(!identifier)
1663         return E_OUTOFMEMORY;
1664
1665     hres = identifier_eval(ctx, identifier, flags, ei, ret);
1666
1667     SysFreeString(identifier);
1668     return hres;
1669 }
1670
1671 /* ECMA-262 3rd Edition    7.8 */
1672 HRESULT literal_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1673 {
1674     literal_expression_t *expr = (literal_expression_t*)_expr;
1675     VARIANT var;
1676     HRESULT hres;
1677
1678     TRACE("\n");
1679
1680     hres = literal_to_var(ctx->parser->script, expr->literal, &var);
1681     if(FAILED(hres))
1682         return hres;
1683
1684     ret->type = EXPRVAL_VARIANT;
1685     ret->u.var = var;
1686     return S_OK;
1687 }
1688
1689 /* ECMA-262 3rd Edition    11.1.4 */
1690 HRESULT array_literal_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1691 {
1692     array_literal_expression_t *expr = (array_literal_expression_t*)_expr;
1693     DWORD length = 0, i = 0;
1694     array_element_t *elem;
1695     DispatchEx *array;
1696     exprval_t exprval;
1697     VARIANT val;
1698     HRESULT hres;
1699
1700     TRACE("\n");
1701
1702     for(elem = expr->element_list; elem; elem = elem->next)
1703         length += elem->elision+1;
1704     length += expr->length;
1705
1706     hres = create_array(ctx->parser->script, length, &array);
1707     if(FAILED(hres))
1708         return hres;
1709
1710     for(elem = expr->element_list; elem; elem = elem->next) {
1711         i += elem->elision;
1712
1713         hres = expr_eval(ctx, elem->expr, 0, ei, &exprval);
1714         if(FAILED(hres))
1715             break;
1716
1717         hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
1718         exprval_release(&exprval);
1719         if(FAILED(hres))
1720             break;
1721
1722         hres = jsdisp_propput_idx(array, i, &val, ei, NULL/*FIXME*/);
1723         VariantClear(&val);
1724         if(FAILED(hres))
1725             break;
1726
1727         i++;
1728     }
1729
1730     if(FAILED(hres)) {
1731         jsdisp_release(array);
1732         return hres;
1733     }
1734
1735     ret->type = EXPRVAL_VARIANT;
1736     V_VT(&ret->u.var) = VT_DISPATCH;
1737     V_DISPATCH(&ret->u.var) = (IDispatch*)_IDispatchEx_(array);
1738     return S_OK;
1739 }
1740
1741 /* ECMA-262 3rd Edition    11.1.5 */
1742 HRESULT property_value_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1743 {
1744     property_value_expression_t *expr = (property_value_expression_t*)_expr;
1745     VARIANT val, tmp;
1746     DispatchEx *obj;
1747     prop_val_t *iter;
1748     exprval_t exprval;
1749     BSTR name;
1750     HRESULT hres;
1751
1752     TRACE("\n");
1753
1754     hres = create_object(ctx->parser->script, NULL, &obj);
1755     if(FAILED(hres))
1756         return hres;
1757
1758     for(iter = expr->property_list; iter; iter = iter->next) {
1759         hres = literal_to_var(ctx->parser->script, iter->name, &tmp);
1760         if(FAILED(hres))
1761             break;
1762
1763         hres = to_string(ctx->parser->script, &tmp, ei, &name);
1764         VariantClear(&tmp);
1765         if(FAILED(hres))
1766             break;
1767
1768         hres = expr_eval(ctx, iter->value, 0, ei, &exprval);
1769         if(SUCCEEDED(hres)) {
1770             hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
1771             exprval_release(&exprval);
1772             if(SUCCEEDED(hres)) {
1773                 hres = jsdisp_propput_name(obj, name, &val, ei, NULL/*FIXME*/);
1774                 VariantClear(&val);
1775             }
1776         }
1777
1778         SysFreeString(name);
1779         if(FAILED(hres))
1780             break;
1781     }
1782
1783     if(FAILED(hres)) {
1784         jsdisp_release(obj);
1785         return hres;
1786     }
1787
1788     ret->type = EXPRVAL_VARIANT;
1789     V_VT(&ret->u.var) = VT_DISPATCH;
1790     V_DISPATCH(&ret->u.var) = (IDispatch*)_IDispatchEx_(obj);
1791     return S_OK;
1792 }
1793
1794 /* ECMA-262 3rd Edition    11.14 */
1795 HRESULT comma_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1796 {
1797     binary_expression_t *expr = (binary_expression_t*)_expr;
1798     VARIANT lval, rval;
1799     HRESULT hres;
1800
1801     TRACE("\n");
1802
1803     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
1804     if(FAILED(hres))
1805         return hres;
1806
1807     VariantClear(&lval);
1808
1809     ret->type = EXPRVAL_VARIANT;
1810     ret->u.var = rval;
1811     return S_OK;
1812 }
1813
1814 /* ECMA-262 3rd Edition    11.11 */
1815 HRESULT logical_or_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1816 {
1817     binary_expression_t *expr = (binary_expression_t*)_expr;
1818     exprval_t exprval;
1819     VARIANT_BOOL b;
1820     VARIANT val;
1821     HRESULT hres;
1822
1823     TRACE("\n");
1824
1825     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1826     if(FAILED(hres))
1827         return hres;
1828
1829     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
1830     exprval_release(&exprval);
1831     if(FAILED(hres))
1832         return hres;
1833
1834     hres = to_boolean(&val, &b);
1835     if(SUCCEEDED(hres) && b) {
1836         ret->type = EXPRVAL_VARIANT;
1837         ret->u.var = val;
1838         return S_OK;
1839     }
1840
1841     VariantClear(&val);
1842     if(FAILED(hres))
1843         return hres;
1844
1845     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
1846     if(FAILED(hres))
1847         return hres;
1848
1849     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
1850     exprval_release(&exprval);
1851     if(FAILED(hres))
1852         return hres;
1853
1854     ret->type = EXPRVAL_VARIANT;
1855     ret->u.var = val;
1856     return S_OK;
1857 }
1858
1859 /* ECMA-262 3rd Edition    11.11 */
1860 HRESULT logical_and_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1861 {
1862     binary_expression_t *expr = (binary_expression_t*)_expr;
1863     exprval_t exprval;
1864     VARIANT_BOOL b;
1865     VARIANT val;
1866     HRESULT hres;
1867
1868     TRACE("\n");
1869
1870     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1871     if(FAILED(hres))
1872         return hres;
1873
1874     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
1875     exprval_release(&exprval);
1876     if(FAILED(hres))
1877         return hres;
1878
1879     hres = to_boolean(&val, &b);
1880     if(SUCCEEDED(hres) && !b) {
1881         ret->type = EXPRVAL_VARIANT;
1882         ret->u.var = val;
1883         return S_OK;
1884     }
1885
1886     VariantClear(&val);
1887     if(FAILED(hres))
1888         return hres;
1889
1890     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
1891     if(FAILED(hres))
1892         return hres;
1893
1894     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
1895     exprval_release(&exprval);
1896     if(FAILED(hres))
1897         return hres;
1898
1899     ret->type = EXPRVAL_VARIANT;
1900     ret->u.var = val;
1901     return S_OK;
1902 }
1903
1904 /* ECMA-262 3rd Edition    11.10 */
1905 static HRESULT bitor_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
1906 {
1907     INT li, ri;
1908     HRESULT hres;
1909
1910     hres = to_int32(ctx->parser->script, lval, ei, &li);
1911     if(FAILED(hres))
1912         return hres;
1913
1914     hres = to_int32(ctx->parser->script, rval, ei, &ri);
1915     if(FAILED(hres))
1916         return hres;
1917
1918     V_VT(retv) = VT_I4;
1919     V_I4(retv) = li|ri;
1920     return S_OK;
1921 }
1922
1923 /* ECMA-262 3rd Edition    11.10 */
1924 HRESULT binary_or_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1925 {
1926     binary_expression_t *expr = (binary_expression_t*)_expr;
1927
1928     TRACE("\n");
1929
1930     return binary_expr_eval(ctx, expr, bitor_eval, ei, ret);
1931 }
1932
1933 /* ECMA-262 3rd Edition    11.10 */
1934 static HRESULT xor_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
1935 {
1936     INT li, ri;
1937     HRESULT hres;
1938
1939     hres = to_int32(ctx->parser->script, lval, ei, &li);
1940     if(FAILED(hres))
1941         return hres;
1942
1943     hres = to_int32(ctx->parser->script, rval, ei, &ri);
1944     if(FAILED(hres))
1945         return hres;
1946
1947     V_VT(retv) = VT_I4;
1948     V_I4(retv) = li^ri;
1949     return S_OK;
1950 }
1951
1952 /* ECMA-262 3rd Edition    11.10 */
1953 HRESULT binary_xor_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1954 {
1955     binary_expression_t *expr = (binary_expression_t*)_expr;
1956
1957     TRACE("\n");
1958
1959     return binary_expr_eval(ctx, expr, xor_eval, ei, ret);
1960 }
1961
1962 /* ECMA-262 3rd Edition    11.10 */
1963 static HRESULT bitand_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
1964 {
1965     INT li, ri;
1966     HRESULT hres;
1967
1968     hres = to_int32(ctx->parser->script, lval, ei, &li);
1969     if(FAILED(hres))
1970         return hres;
1971
1972     hres = to_int32(ctx->parser->script, rval, ei, &ri);
1973     if(FAILED(hres))
1974         return hres;
1975
1976     V_VT(retv) = VT_I4;
1977     V_I4(retv) = li&ri;
1978     return S_OK;
1979 }
1980
1981 /* ECMA-262 3rd Edition    11.10 */
1982 HRESULT binary_and_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1983 {
1984     binary_expression_t *expr = (binary_expression_t*)_expr;
1985
1986     TRACE("\n");
1987
1988     return binary_expr_eval(ctx, expr, bitand_eval, ei, ret);
1989 }
1990
1991 /* ECMA-262 3rd Edition    11.8.6 */
1992 static HRESULT instanceof_eval(exec_ctx_t *ctx, VARIANT *inst, VARIANT *objv, jsexcept_t *ei, VARIANT *retv)
1993 {
1994     DispatchEx *obj, *iter, *tmp = NULL;
1995     VARIANT_BOOL ret = VARIANT_FALSE;
1996     BOOL b;
1997     VARIANT var;
1998     HRESULT hres;
1999
2000     static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
2001
2002     if(V_VT(objv) != VT_DISPATCH) {
2003         FIXME("throw TypeError\n");
2004         return E_FAIL;
2005     }
2006
2007     obj = iface_to_jsdisp((IUnknown*)V_DISPATCH(objv));
2008     if(!obj) {
2009         FIXME("throw TypeError\n");
2010         return E_FAIL;
2011     }
2012
2013     if(is_class(obj, JSCLASS_FUNCTION)) {
2014         hres = jsdisp_propget_name(obj, prototypeW, &var, ei, NULL/*FIXME*/);
2015     }else {
2016         FIXME("throw TypeError\n");
2017         hres = E_FAIL;
2018     }
2019     jsdisp_release(obj);
2020     if(FAILED(hres))
2021         return hres;
2022
2023     if(V_VT(&var) == VT_DISPATCH) {
2024         if(V_VT(inst) == VT_DISPATCH)
2025             tmp = iface_to_jsdisp((IUnknown*)V_DISPATCH(inst));
2026         for(iter = tmp; iter; iter = iter->prototype) {
2027             hres = disp_cmp(V_DISPATCH(&var), (IDispatch*)_IDispatchEx_(iter), &b);
2028             if(FAILED(hres))
2029                 break;
2030             if(b) {
2031                 ret = VARIANT_TRUE;
2032                 break;
2033             }
2034         }
2035
2036         if(tmp)
2037             jsdisp_release(tmp);
2038     }else {
2039         FIXME("prototype is not an object\n");
2040         hres = E_FAIL;
2041     }
2042
2043     VariantClear(&var);
2044     if(FAILED(hres))
2045         return hres;
2046
2047     V_VT(retv) = VT_BOOL;
2048     V_BOOL(retv) = ret;
2049     return S_OK;
2050 }
2051
2052 /* ECMA-262 3rd Edition    11.8.6 */
2053 HRESULT instanceof_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2054 {
2055     binary_expression_t *expr = (binary_expression_t*)_expr;
2056
2057     TRACE("\n");
2058
2059     return binary_expr_eval(ctx, expr, instanceof_eval, ei, ret);
2060 }
2061
2062 /* ECMA-262 3rd Edition    11.8.7 */
2063 static HRESULT in_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *obj, jsexcept_t *ei, VARIANT *retv)
2064 {
2065     VARIANT_BOOL ret;
2066     DISPID id;
2067     BSTR str;
2068     HRESULT hres;
2069
2070     if(V_VT(obj) != VT_DISPATCH) {
2071         FIXME("throw TypeError\n");
2072         return E_FAIL;
2073     }
2074
2075     hres = to_string(ctx->parser->script, lval, ei, &str);
2076     if(FAILED(hres))
2077         return hres;
2078
2079     hres = disp_get_id(ctx->parser->script, V_DISPATCH(obj), str, 0, &id);
2080     SysFreeString(str);
2081     if(SUCCEEDED(hres))
2082         ret = VARIANT_TRUE;
2083     else if(hres == DISP_E_UNKNOWNNAME)
2084         ret = VARIANT_FALSE;
2085     else
2086         return hres;
2087
2088     V_VT(retv) = VT_BOOL;
2089     V_BOOL(retv) = ret;
2090     return S_OK;
2091 }
2092
2093 /* ECMA-262 3rd Edition    11.8.7 */
2094 HRESULT in_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2095 {
2096     binary_expression_t *expr = (binary_expression_t*)_expr;
2097
2098     TRACE("\n");
2099
2100     return binary_expr_eval(ctx, expr, in_eval, ei, ret);
2101 }
2102
2103 /* ECMA-262 3rd Edition    11.6.1 */
2104 static HRESULT add_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2105 {
2106     VARIANT r, l;
2107     HRESULT hres;
2108
2109     hres = to_primitive(ctx->parser->script, lval, ei, &l, NO_HINT);
2110     if(FAILED(hres))
2111         return hres;
2112
2113     hres = to_primitive(ctx->parser->script, rval, ei, &r, NO_HINT);
2114     if(FAILED(hres)) {
2115         VariantClear(&l);
2116         return hres;
2117     }
2118
2119     if(V_VT(&l) == VT_BSTR || V_VT(&r) == VT_BSTR) {
2120         BSTR lstr = NULL, rstr = NULL;
2121
2122         if(V_VT(&l) == VT_BSTR)
2123             lstr = V_BSTR(&l);
2124         else
2125             hres = to_string(ctx->parser->script, &l, ei, &lstr);
2126
2127         if(SUCCEEDED(hres)) {
2128             if(V_VT(&r) == VT_BSTR)
2129                 rstr = V_BSTR(&r);
2130             else
2131                 hres = to_string(ctx->parser->script, &r, ei, &rstr);
2132         }
2133
2134         if(SUCCEEDED(hres)) {
2135             int len1, len2;
2136
2137             len1 = SysStringLen(lstr);
2138             len2 = SysStringLen(rstr);
2139
2140             V_VT(retv) = VT_BSTR;
2141             V_BSTR(retv) = SysAllocStringLen(NULL, len1+len2);
2142             memcpy(V_BSTR(retv), lstr, len1*sizeof(WCHAR));
2143             memcpy(V_BSTR(retv)+len1, rstr, (len2+1)*sizeof(WCHAR));
2144         }
2145
2146         if(V_VT(&l) != VT_BSTR)
2147             SysFreeString(lstr);
2148         if(V_VT(&r) != VT_BSTR)
2149             SysFreeString(rstr);
2150     }else {
2151         VARIANT nl, nr;
2152
2153         hres = to_number(ctx->parser->script, &l, ei, &nl);
2154         if(SUCCEEDED(hres)) {
2155             hres = to_number(ctx->parser->script, &r, ei, &nr);
2156             if(SUCCEEDED(hres))
2157                 num_set_val(retv, num_val(&nl) + num_val(&nr));
2158         }
2159     }
2160
2161     VariantClear(&r);
2162     VariantClear(&l);
2163     return hres;
2164 }
2165
2166 /* ECMA-262 3rd Edition    11.6.1 */
2167 HRESULT add_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2168 {
2169     binary_expression_t *expr = (binary_expression_t*)_expr;
2170
2171     TRACE("\n");
2172
2173     return binary_expr_eval(ctx, expr, add_eval, ei, ret);
2174 }
2175
2176 /* ECMA-262 3rd Edition    11.6.2 */
2177 static HRESULT sub_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2178 {
2179     VARIANT lnum, rnum;
2180     HRESULT hres;
2181
2182     hres = to_number(ctx->parser->script, lval, ei, &lnum);
2183     if(FAILED(hres))
2184         return hres;
2185
2186     hres = to_number(ctx->parser->script, rval, ei, &rnum);
2187     if(FAILED(hres))
2188         return hres;
2189
2190     num_set_val(retv, num_val(&lnum) - num_val(&rnum));
2191     return S_OK;
2192 }
2193
2194 /* ECMA-262 3rd Edition    11.6.2 */
2195 HRESULT sub_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2196 {
2197     binary_expression_t *expr = (binary_expression_t*)_expr;
2198
2199     TRACE("\n");
2200
2201     return binary_expr_eval(ctx, expr, sub_eval, ei, ret);
2202 }
2203
2204 /* ECMA-262 3rd Edition    11.5.1 */
2205 static HRESULT mul_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2206 {
2207     VARIANT lnum, rnum;
2208     HRESULT hres;
2209
2210     hres = to_number(ctx->parser->script, lval, ei, &lnum);
2211     if(FAILED(hres))
2212         return hres;
2213
2214     hres = to_number(ctx->parser->script, rval, ei, &rnum);
2215     if(FAILED(hres))
2216         return hres;
2217
2218     num_set_val(retv, num_val(&lnum) * num_val(&rnum));
2219     return S_OK;
2220 }
2221
2222 /* ECMA-262 3rd Edition    11.5.1 */
2223 HRESULT mul_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2224 {
2225     binary_expression_t *expr = (binary_expression_t*)_expr;
2226
2227     TRACE("\n");
2228
2229     return binary_expr_eval(ctx, expr, mul_eval, ei, ret);
2230 }
2231
2232 /* ECMA-262 3rd Edition    11.5.2 */
2233 static HRESULT div_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2234 {
2235     VARIANT lnum, rnum;
2236     HRESULT hres;
2237
2238     hres = to_number(ctx->parser->script, lval, ei, &lnum);
2239     if(FAILED(hres))
2240         return hres;
2241
2242     hres = to_number(ctx->parser->script, rval, ei, &rnum);
2243     if(FAILED(hres))
2244         return hres;
2245
2246     num_set_val(retv, num_val(&lnum) / num_val(&rnum));
2247     return S_OK;
2248 }
2249
2250 /* ECMA-262 3rd Edition    11.5.2 */
2251 HRESULT div_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2252 {
2253     binary_expression_t *expr = (binary_expression_t*)_expr;
2254
2255     TRACE("\n");
2256
2257     return binary_expr_eval(ctx, expr, div_eval, ei, ret);
2258 }
2259
2260 /* ECMA-262 3rd Edition    11.5.3 */
2261 static HRESULT mod_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2262 {
2263     VARIANT lnum, rnum;
2264     HRESULT hres;
2265
2266     hres = to_number(ctx->parser->script, lval, ei, &lnum);
2267     if(FAILED(hres))
2268         return hres;
2269
2270     hres = to_number(ctx->parser->script, rval, ei, &rnum);
2271     if(FAILED(hres))
2272         return hres;
2273
2274     num_set_val(retv, fmod(num_val(&lnum), num_val(&rnum)));
2275     return S_OK;
2276 }
2277
2278 /* ECMA-262 3rd Edition    11.5.3 */
2279 HRESULT mod_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2280 {
2281     binary_expression_t *expr = (binary_expression_t*)_expr;
2282
2283     TRACE("\n");
2284
2285     return binary_expr_eval(ctx, expr, mod_eval, ei, ret);
2286 }
2287
2288 /* ECMA-262 3rd Edition    11.4.2 */
2289 HRESULT delete_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2290 {
2291     unary_expression_t *expr = (unary_expression_t*)_expr;
2292     VARIANT_BOOL b = VARIANT_FALSE;
2293     exprval_t exprval;
2294     HRESULT hres;
2295
2296     TRACE("\n");
2297
2298     hres = expr_eval(ctx, expr->expression, EXPR_STRREF, ei, &exprval);
2299     if(FAILED(hres))
2300         return hres;
2301
2302     switch(exprval.type) {
2303     case EXPRVAL_IDREF: {
2304         IDispatchEx *dispex;
2305
2306         hres = IDispatch_QueryInterface(exprval.u.nameref.disp, &IID_IDispatchEx, (void**)&dispex);
2307         if(SUCCEEDED(hres)) {
2308             hres = IDispatchEx_DeleteMemberByDispID(dispex, exprval.u.idref.id);
2309             b = VARIANT_TRUE;
2310             IDispatchEx_Release(dispex);
2311         }
2312         break;
2313     }
2314     case EXPRVAL_NAMEREF: {
2315         IDispatchEx *dispex;
2316
2317         hres = IDispatch_QueryInterface(exprval.u.nameref.disp, &IID_IDispatchEx, (void**)&dispex);
2318         if(SUCCEEDED(hres)) {
2319             hres = IDispatchEx_DeleteMemberByName(dispex, exprval.u.nameref.name,
2320                     make_grfdex(ctx->parser->script, fdexNameCaseSensitive));
2321             b = VARIANT_TRUE;
2322             IDispatchEx_Release(dispex);
2323         }
2324         break;
2325     }
2326     default:
2327         FIXME("unsupported type %d\n", exprval.type);
2328         hres = E_NOTIMPL;
2329     }
2330
2331     exprval_release(&exprval);
2332     if(FAILED(hres))
2333         return hres;
2334
2335     return return_bool(ret, b);
2336 }
2337
2338 /* ECMA-262 3rd Edition    11.4.2 */
2339 HRESULT void_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2340 {
2341     unary_expression_t *expr = (unary_expression_t*)_expr;
2342     exprval_t exprval;
2343     VARIANT tmp;
2344     HRESULT hres;
2345
2346     TRACE("\n");
2347
2348     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2349     if(FAILED(hres))
2350         return hres;
2351
2352     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &tmp);
2353     exprval_release(&exprval);
2354     if(FAILED(hres))
2355         return hres;
2356
2357     VariantClear(&tmp);
2358
2359     ret->type = EXPRVAL_VARIANT;
2360     V_VT(&ret->u.var) = VT_EMPTY;
2361     return S_OK;
2362 }
2363
2364 /* ECMA-262 3rd Edition    11.4.3 */
2365 static HRESULT typeof_exprval(exec_ctx_t *ctx, exprval_t *exprval, jsexcept_t *ei, const WCHAR **ret)
2366 {
2367     VARIANT val;
2368     HRESULT hres;
2369
2370     static const WCHAR booleanW[] = {'b','o','o','l','e','a','n',0};
2371     static const WCHAR functionW[] = {'f','u','n','c','t','i','o','n',0};
2372     static const WCHAR numberW[] = {'n','u','m','b','e','r',0};
2373     static const WCHAR objectW[] = {'o','b','j','e','c','t',0};
2374     static const WCHAR stringW[] = {'s','t','r','i','n','g',0};
2375     static const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
2376
2377     if(exprval->type == EXPRVAL_INVALID) {
2378         *ret = undefinedW;
2379         return S_OK;
2380     }
2381
2382     hres = exprval_to_value(ctx->parser->script, exprval, ei, &val);
2383     if(FAILED(hres))
2384         return hres;
2385
2386     switch(V_VT(&val)) {
2387     case VT_EMPTY:
2388         *ret = undefinedW;
2389         break;
2390     case VT_NULL:
2391         *ret = objectW;
2392         break;
2393     case VT_BOOL:
2394         *ret = booleanW;
2395         break;
2396     case VT_I4:
2397     case VT_R8:
2398         *ret = numberW;
2399         break;
2400     case VT_BSTR:
2401         *ret = stringW;
2402         break;
2403     case VT_DISPATCH: {
2404         DispatchEx *dispex;
2405
2406         if(V_DISPATCH(&val) && (dispex = iface_to_jsdisp((IUnknown*)V_DISPATCH(&val)))) {
2407             *ret = is_class(dispex, JSCLASS_FUNCTION) ? functionW : objectW;
2408             jsdisp_release(dispex);
2409         }else {
2410             *ret = objectW;
2411         }
2412         break;
2413     }
2414     default:
2415         FIXME("unhandled vt %d\n", V_VT(&val));
2416         hres = E_NOTIMPL;
2417     }
2418
2419     VariantClear(&val);
2420     return S_OK;
2421 }
2422
2423 HRESULT typeof_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2424 {
2425     unary_expression_t *expr = (unary_expression_t*)_expr;
2426     const WCHAR *str = NULL;
2427     exprval_t exprval;
2428     HRESULT hres;
2429
2430     TRACE("\n");
2431
2432     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2433     if(FAILED(hres))
2434         return hres;
2435
2436     hres = typeof_exprval(ctx, &exprval, ei, &str);
2437     exprval_release(&exprval);
2438     if(FAILED(hres))
2439         return hres;
2440
2441     ret->type = EXPRVAL_VARIANT;
2442     V_VT(&ret->u.var) = VT_BSTR;
2443     V_BSTR(&ret->u.var) = SysAllocString(str);
2444     if(!V_BSTR(&ret->u.var))
2445         return E_OUTOFMEMORY;
2446
2447     return S_OK;
2448 }
2449
2450 /* ECMA-262 3rd Edition    11.4.7 */
2451 HRESULT minus_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2452 {
2453     unary_expression_t *expr = (unary_expression_t*)_expr;
2454     exprval_t exprval;
2455     VARIANT val, num;
2456     HRESULT hres;
2457
2458     TRACE("\n");
2459
2460     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2461     if(FAILED(hres))
2462         return hres;
2463
2464     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
2465     exprval_release(&exprval);
2466     if(FAILED(hres))
2467         return hres;
2468
2469     hres = to_number(ctx->parser->script, &val, ei, &num);
2470     VariantClear(&val);
2471     if(FAILED(hres))
2472         return hres;
2473
2474     ret->type = EXPRVAL_VARIANT;
2475     num_set_val(&ret->u.var, -num_val(&num));
2476     return S_OK;
2477 }
2478
2479 /* ECMA-262 3rd Edition    11.4.6 */
2480 HRESULT plus_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2481 {
2482     unary_expression_t *expr = (unary_expression_t*)_expr;
2483     exprval_t exprval;
2484     VARIANT val, num;
2485     HRESULT hres;
2486
2487     TRACE("\n");
2488
2489     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2490     if(FAILED(hres))
2491         return hres;
2492
2493     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
2494     exprval_release(&exprval);
2495     if(FAILED(hres))
2496         return hres;
2497
2498     hres = to_number(ctx->parser->script, &val, ei, &num);
2499     VariantClear(&val);
2500     if(FAILED(hres))
2501         return hres;
2502
2503     ret->type = EXPRVAL_VARIANT;
2504     ret->u.var = num;
2505     return S_OK;
2506 }
2507
2508 /* ECMA-262 3rd Edition    11.3.1 */
2509 HRESULT post_increment_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2510 {
2511     unary_expression_t *expr = (unary_expression_t*)_expr;
2512     VARIANT val, num;
2513     exprval_t exprval;
2514     HRESULT hres;
2515
2516     TRACE("\n");
2517
2518     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2519     if(FAILED(hres))
2520         return hres;
2521
2522     hres = exprval_value(ctx->parser->script, &exprval, ei, &val);
2523     if(SUCCEEDED(hres)) {
2524         hres = to_number(ctx->parser->script, &val, ei, &num);
2525         VariantClear(&val);
2526     }
2527
2528     if(SUCCEEDED(hres)) {
2529         VARIANT inc;
2530         num_set_val(&inc, num_val(&num)+1.0);
2531         hres = put_value(ctx->parser->script, &exprval, &inc, ei);
2532     }
2533
2534     exprval_release(&exprval);
2535     if(FAILED(hres))
2536         return hres;
2537
2538     ret->type = EXPRVAL_VARIANT;
2539     ret->u.var = num;
2540     return S_OK;
2541 }
2542
2543 /* ECMA-262 3rd Edition    11.3.2 */
2544 HRESULT post_decrement_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2545 {
2546     unary_expression_t *expr = (unary_expression_t*)_expr;
2547     VARIANT val, num;
2548     exprval_t exprval;
2549     HRESULT hres;
2550
2551     TRACE("\n");
2552
2553     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2554     if(FAILED(hres))
2555         return hres;
2556
2557     hres = exprval_value(ctx->parser->script, &exprval, ei, &val);
2558     if(SUCCEEDED(hres)) {
2559         hres = to_number(ctx->parser->script, &val, ei, &num);
2560         VariantClear(&val);
2561     }
2562
2563     if(SUCCEEDED(hres)) {
2564         VARIANT dec;
2565         num_set_val(&dec, num_val(&num)-1.0);
2566         hres = put_value(ctx->parser->script, &exprval, &dec, ei);
2567     }
2568
2569     exprval_release(&exprval);
2570     if(FAILED(hres))
2571         return hres;
2572
2573     ret->type = EXPRVAL_VARIANT;
2574     ret->u.var = num;
2575     return S_OK;
2576 }
2577
2578 /* ECMA-262 3rd Edition    11.4.4 */
2579 HRESULT pre_increment_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2580 {
2581     unary_expression_t *expr = (unary_expression_t*)_expr;
2582     VARIANT val, num;
2583     exprval_t exprval;
2584     HRESULT hres;
2585
2586     TRACE("\n");
2587
2588     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2589     if(FAILED(hres))
2590         return hres;
2591
2592     hres = exprval_value(ctx->parser->script, &exprval, ei, &val);
2593     if(SUCCEEDED(hres)) {
2594         hres = to_number(ctx->parser->script, &val, ei, &num);
2595         VariantClear(&val);
2596     }
2597
2598     if(SUCCEEDED(hres)) {
2599         num_set_val(&val, num_val(&num)+1.0);
2600         hres = put_value(ctx->parser->script, &exprval, &val, ei);
2601     }
2602
2603     exprval_release(&exprval);
2604     if(FAILED(hres))
2605         return hres;
2606
2607     ret->type = EXPRVAL_VARIANT;
2608     ret->u.var = val;
2609     return S_OK;
2610 }
2611
2612 /* ECMA-262 3rd Edition    11.4.5 */
2613 HRESULT pre_decrement_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2614 {
2615     unary_expression_t *expr = (unary_expression_t*)_expr;
2616     VARIANT val, num;
2617     exprval_t exprval;
2618     HRESULT hres;
2619
2620     TRACE("\n");
2621
2622     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2623     if(FAILED(hres))
2624         return hres;
2625
2626     hres = exprval_value(ctx->parser->script, &exprval, ei, &val);
2627     if(SUCCEEDED(hres)) {
2628         hres = to_number(ctx->parser->script, &val, ei, &num);
2629         VariantClear(&val);
2630     }
2631
2632     if(SUCCEEDED(hres)) {
2633         num_set_val(&val, num_val(&num)-1.0);
2634         hres = put_value(ctx->parser->script, &exprval, &val, ei);
2635     }
2636
2637     exprval_release(&exprval);
2638     if(FAILED(hres))
2639         return hres;
2640
2641     ret->type = EXPRVAL_VARIANT;
2642     ret->u.var = val;
2643     return S_OK;
2644 }
2645
2646 /* ECMA-262 3rd Edition    11.9.3 */
2647 static HRESULT equal_values(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, BOOL *ret)
2648 {
2649     if(V_VT(lval) == V_VT(rval) || (is_num_vt(V_VT(lval)) && is_num_vt(V_VT(rval))))
2650        return equal2_values(lval, rval, ret);
2651
2652     /* FIXME: NULL disps should be handled in more general way */
2653     if(V_VT(lval) == VT_DISPATCH && !V_DISPATCH(lval)) {
2654         VARIANT v;
2655         V_VT(&v) = VT_NULL;
2656         return equal_values(ctx, &v, rval, ei, ret);
2657     }
2658
2659     if(V_VT(rval) == VT_DISPATCH && !V_DISPATCH(rval)) {
2660         VARIANT v;
2661         V_VT(&v) = VT_NULL;
2662         return equal_values(ctx, lval, &v, ei, ret);
2663     }
2664
2665     if((V_VT(lval) == VT_NULL && V_VT(rval) == VT_EMPTY) ||
2666        (V_VT(lval) == VT_EMPTY && V_VT(rval) == VT_NULL)) {
2667         *ret = TRUE;
2668         return S_OK;
2669     }
2670
2671     if(V_VT(lval) == VT_BSTR && is_num_vt(V_VT(rval))) {
2672         VARIANT v;
2673         HRESULT hres;
2674
2675         hres = to_number(ctx->parser->script, lval, ei, &v);
2676         if(FAILED(hres))
2677             return hres;
2678
2679         return equal_values(ctx, &v, rval, ei, ret);
2680     }
2681
2682     if(V_VT(rval) == VT_BSTR && is_num_vt(V_VT(lval))) {
2683         VARIANT v;
2684         HRESULT hres;
2685
2686         hres = to_number(ctx->parser->script, rval, ei, &v);
2687         if(FAILED(hres))
2688             return hres;
2689
2690         return equal_values(ctx, lval, &v, ei, ret);
2691     }
2692
2693     if(V_VT(rval) == VT_BOOL) {
2694         VARIANT v;
2695
2696         V_VT(&v) = VT_I4;
2697         V_I4(&v) = V_BOOL(rval) ? 1 : 0;
2698         return equal_values(ctx, lval, &v, ei, ret);
2699     }
2700
2701     if(V_VT(lval) == VT_BOOL) {
2702         VARIANT v;
2703
2704         V_VT(&v) = VT_I4;
2705         V_I4(&v) = V_BOOL(lval) ? 1 : 0;
2706         return equal_values(ctx, &v, rval, ei, ret);
2707     }
2708
2709
2710     if(V_VT(rval) == VT_DISPATCH && (V_VT(lval) == VT_BSTR || is_num_vt(V_VT(lval)))) {
2711         VARIANT v;
2712         HRESULT hres;
2713
2714         hres = to_primitive(ctx->parser->script, rval, ei, &v, NO_HINT);
2715         if(FAILED(hres))
2716             return hres;
2717
2718         hres = equal_values(ctx, lval, &v, ei, ret);
2719
2720         VariantClear(&v);
2721         return hres;
2722     }
2723
2724
2725     if(V_VT(lval) == VT_DISPATCH && (V_VT(rval) == VT_BSTR || is_num_vt(V_VT(rval)))) {
2726         VARIANT v;
2727         HRESULT hres;
2728
2729         hres = to_primitive(ctx->parser->script, lval, ei, &v, NO_HINT);
2730         if(FAILED(hres))
2731             return hres;
2732
2733         hres = equal_values(ctx, &v, rval, ei, ret);
2734
2735         VariantClear(&v);
2736         return hres;
2737     }
2738
2739
2740     *ret = FALSE;
2741     return S_OK;
2742 }
2743
2744 /* ECMA-262 3rd Edition    11.9.1 */
2745 HRESULT equal_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2746 {
2747     binary_expression_t *expr = (binary_expression_t*)_expr;
2748     VARIANT rval, lval;
2749     BOOL b;
2750     HRESULT hres;
2751
2752     TRACE("\n");
2753
2754     hres = get_binary_expr_values(ctx, expr, ei, &rval, &lval);
2755     if(FAILED(hres))
2756         return hres;
2757
2758     hres = equal_values(ctx, &rval, &lval, ei, &b);
2759     VariantClear(&lval);
2760     VariantClear(&rval);
2761     if(FAILED(hres))
2762         return hres;
2763
2764     return return_bool(ret, b);
2765 }
2766
2767 /* ECMA-262 3rd Edition    11.9.4 */
2768 HRESULT equal2_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2769 {
2770     binary_expression_t *expr = (binary_expression_t*)_expr;
2771     VARIANT rval, lval;
2772     BOOL b;
2773     HRESULT hres;
2774
2775     TRACE("\n");
2776
2777     hres = get_binary_expr_values(ctx, expr, ei, &rval, &lval);
2778     if(FAILED(hres))
2779         return hres;
2780
2781     hres = equal2_values(&rval, &lval, &b);
2782     VariantClear(&lval);
2783     VariantClear(&rval);
2784     if(FAILED(hres))
2785         return hres;
2786
2787     return return_bool(ret, b);
2788 }
2789
2790 /* ECMA-262 3rd Edition    11.9.2 */
2791 HRESULT not_equal_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2792 {
2793     binary_expression_t *expr = (binary_expression_t*)_expr;
2794     VARIANT rval, lval;
2795     BOOL b;
2796     HRESULT hres;
2797
2798     TRACE("\n");
2799
2800     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2801     if(FAILED(hres))
2802         return hres;
2803
2804     hres = equal_values(ctx, &lval, &rval, ei, &b);
2805     VariantClear(&lval);
2806     VariantClear(&rval);
2807     if(FAILED(hres))
2808         return hres;
2809
2810     return return_bool(ret, !b);
2811 }
2812
2813 /* ECMA-262 3rd Edition    11.9.5 */
2814 HRESULT not_equal2_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2815 {
2816     binary_expression_t *expr = (binary_expression_t*)_expr;
2817     VARIANT rval, lval;
2818     BOOL b;
2819     HRESULT hres;
2820
2821     TRACE("\n");
2822
2823     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2824     if(FAILED(hres))
2825         return hres;
2826
2827     hres = equal2_values(&lval, &rval, &b);
2828     VariantClear(&lval);
2829     VariantClear(&rval);
2830     if(FAILED(hres))
2831         return hres;
2832
2833     return return_bool(ret, !b);
2834 }
2835
2836 /* ECMA-262 3rd Edition    11.8.5 */
2837 static HRESULT less_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, BOOL greater, jsexcept_t *ei, BOOL *ret)
2838 {
2839     VARIANT l, r, ln, rn;
2840     HRESULT hres;
2841
2842     hres = to_primitive(ctx->parser->script, lval, ei, &l, NO_HINT);
2843     if(FAILED(hres))
2844         return hres;
2845
2846     hres = to_primitive(ctx->parser->script, rval, ei, &r, NO_HINT);
2847     if(FAILED(hres)) {
2848         VariantClear(&l);
2849         return hres;
2850     }
2851
2852     if(V_VT(&l) == VT_BSTR && V_VT(&r) == VT_BSTR) {
2853         *ret = (strcmpW(V_BSTR(&l), V_BSTR(&r)) < 0) ^ greater;
2854         SysFreeString(V_BSTR(&l));
2855         SysFreeString(V_BSTR(&r));
2856         return S_OK;
2857     }
2858
2859     hres = to_number(ctx->parser->script, &l, ei, &ln);
2860     VariantClear(&l);
2861     if(SUCCEEDED(hres))
2862         hres = to_number(ctx->parser->script, &r, ei, &rn);
2863     VariantClear(&r);
2864     if(FAILED(hres))
2865         return hres;
2866
2867     if(V_VT(&ln) == VT_I4 && V_VT(&rn) == VT_I4) {
2868         *ret = (V_I4(&ln) < V_I4(&rn)) ^ greater;
2869     }else  {
2870         DOUBLE ld = num_val(&ln);
2871         DOUBLE rd = num_val(&rn);
2872
2873         *ret = !isnan(ld) && !isnan(rd) && ((ld < rd) ^ greater);
2874     }
2875
2876     return S_OK;
2877 }
2878
2879 /* ECMA-262 3rd Edition    11.8.1 */
2880 HRESULT less_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2881 {
2882     binary_expression_t *expr = (binary_expression_t*)_expr;
2883     VARIANT rval, lval;
2884     BOOL b;
2885     HRESULT hres;
2886
2887     TRACE("\n");
2888
2889     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2890     if(FAILED(hres))
2891         return hres;
2892
2893     hres = less_eval(ctx, &lval, &rval, FALSE, ei, &b);
2894     VariantClear(&lval);
2895     VariantClear(&rval);
2896     if(FAILED(hres))
2897         return hres;
2898
2899     return return_bool(ret, b);
2900 }
2901
2902 /* ECMA-262 3rd Edition    11.8.3 */
2903 HRESULT lesseq_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2904 {
2905     binary_expression_t *expr = (binary_expression_t*)_expr;
2906     VARIANT rval, lval;
2907     BOOL b;
2908     HRESULT hres;
2909
2910     TRACE("\n");
2911
2912     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2913     if(FAILED(hres))
2914         return hres;
2915
2916     hres = less_eval(ctx, &rval, &lval, TRUE, ei, &b);
2917     VariantClear(&lval);
2918     VariantClear(&rval);
2919     if(FAILED(hres))
2920         return hres;
2921
2922     return return_bool(ret, b);
2923 }
2924
2925 /* ECMA-262 3rd Edition    11.8.2 */
2926 HRESULT greater_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2927 {
2928     binary_expression_t *expr = (binary_expression_t*)_expr;
2929     VARIANT rval, lval;
2930     BOOL b;
2931     HRESULT hres;
2932
2933     TRACE("\n");
2934
2935     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2936     if(FAILED(hres))
2937         return hres;
2938
2939     hres = less_eval(ctx, &rval, &lval, FALSE, ei, &b);
2940     VariantClear(&lval);
2941     VariantClear(&rval);
2942     if(FAILED(hres))
2943         return hres;
2944
2945     return return_bool(ret, b);
2946 }
2947
2948 /* ECMA-262 3rd Edition    11.8.4 */
2949 HRESULT greatereq_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2950 {
2951     binary_expression_t *expr = (binary_expression_t*)_expr;
2952     VARIANT rval, lval;
2953     BOOL b;
2954     HRESULT hres;
2955
2956     TRACE("\n");
2957
2958     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2959     if(FAILED(hres))
2960         return hres;
2961
2962     hres = less_eval(ctx, &lval, &rval, TRUE, ei, &b);
2963     VariantClear(&lval);
2964     VariantClear(&rval);
2965     if(FAILED(hres))
2966         return hres;
2967
2968     return return_bool(ret, b);
2969 }
2970
2971 /* ECMA-262 3rd Edition    11.4.8 */
2972 HRESULT binary_negation_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2973 {
2974     unary_expression_t *expr = (unary_expression_t*)_expr;
2975     exprval_t exprval;
2976     VARIANT val;
2977     INT i;
2978     HRESULT hres;
2979
2980     TRACE("\n");
2981
2982     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2983     if(FAILED(hres))
2984         return hres;
2985
2986     hres = exprval_to_value(ctx->parser->script, &exprval, ei, &val);
2987     exprval_release(&exprval);
2988     if(FAILED(hres))
2989         return hres;
2990
2991     hres = to_int32(ctx->parser->script, &val, ei, &i);
2992     if(FAILED(hres))
2993         return hres;
2994
2995     ret->type = EXPRVAL_VARIANT;
2996     V_VT(&ret->u.var) = VT_I4;
2997     V_I4(&ret->u.var) = ~i;
2998     return S_OK;
2999 }
3000
3001 /* ECMA-262 3rd Edition    11.4.9 */
3002 HRESULT logical_negation_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3003 {
3004     unary_expression_t *expr = (unary_expression_t*)_expr;
3005     exprval_t exprval;
3006     VARIANT_BOOL b;
3007     HRESULT hres;
3008
3009     TRACE("\n");
3010
3011     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
3012     if(FAILED(hres))
3013         return hres;
3014
3015     hres = exprval_to_boolean(ctx->parser->script, &exprval, ei, &b);
3016     exprval_release(&exprval);
3017     if(FAILED(hres))
3018         return hres;
3019
3020     return return_bool(ret, !b);
3021 }
3022
3023 /* ECMA-262 3rd Edition    11.7.1 */
3024 static HRESULT lshift_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3025 {
3026     DWORD ri;
3027     INT li;
3028     HRESULT hres;
3029
3030     hres = to_int32(ctx->parser->script, lval, ei, &li);
3031     if(FAILED(hres))
3032         return hres;
3033
3034     hres = to_uint32(ctx->parser->script, rval, ei, &ri);
3035     if(FAILED(hres))
3036         return hres;
3037
3038     V_VT(retv) = VT_I4;
3039     V_I4(retv) = li << (ri&0x1f);
3040     return S_OK;
3041 }
3042
3043 /* ECMA-262 3rd Edition    11.7.1 */
3044 HRESULT left_shift_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3045 {
3046     binary_expression_t *expr = (binary_expression_t*)_expr;
3047
3048     TRACE("\n");
3049
3050     return binary_expr_eval(ctx, expr, lshift_eval, ei, ret);
3051 }
3052
3053 /* ECMA-262 3rd Edition    11.7.2 */
3054 static HRESULT rshift_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3055 {
3056     DWORD ri;
3057     INT li;
3058     HRESULT hres;
3059
3060     hres = to_int32(ctx->parser->script, lval, ei, &li);
3061     if(FAILED(hres))
3062         return hres;
3063
3064     hres = to_uint32(ctx->parser->script, rval, ei, &ri);
3065     if(FAILED(hres))
3066         return hres;
3067
3068     V_VT(retv) = VT_I4;
3069     V_I4(retv) = li >> (ri&0x1f);
3070     return S_OK;
3071 }
3072
3073 /* ECMA-262 3rd Edition    11.7.2 */
3074 HRESULT right_shift_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3075 {
3076     binary_expression_t *expr = (binary_expression_t*)_expr;
3077
3078     TRACE("\n");
3079
3080     return binary_expr_eval(ctx, expr, rshift_eval, ei, ret);
3081 }
3082
3083 /* ECMA-262 3rd Edition    11.7.3 */
3084 static HRESULT rshift2_eval(exec_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3085 {
3086     DWORD li, ri;
3087     HRESULT hres;
3088
3089     hres = to_uint32(ctx->parser->script, lval, ei, &li);
3090     if(FAILED(hres))
3091         return hres;
3092
3093     hres = to_uint32(ctx->parser->script, rval, ei, &ri);
3094     if(FAILED(hres))
3095         return hres;
3096
3097     V_VT(retv) = VT_I4;
3098     V_I4(retv) = li >> (ri&0x1f);
3099     return S_OK;
3100 }
3101
3102 /* ECMA-262 3rd Edition    11.7.3 */
3103 HRESULT right2_shift_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3104 {
3105     binary_expression_t *expr = (binary_expression_t*)_expr;
3106
3107     TRACE("\n");
3108
3109     return binary_expr_eval(ctx, expr, rshift2_eval, ei, ret);
3110 }
3111
3112 /* ECMA-262 3rd Edition    11.13.1 */
3113 HRESULT assign_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3114 {
3115     binary_expression_t *expr = (binary_expression_t*)_expr;
3116     exprval_t exprval, exprvalr;
3117     VARIANT rval;
3118     HRESULT hres;
3119
3120     TRACE("\n");
3121
3122     hres = expr_eval(ctx, expr->expression1, EXPR_NEWREF, ei, &exprval);
3123     if(FAILED(hres))
3124         return hres;
3125
3126     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprvalr);
3127     if(SUCCEEDED(hres)) {
3128         hres = exprval_to_value(ctx->parser->script, &exprvalr, ei, &rval);
3129         exprval_release(&exprvalr);
3130     }
3131
3132     if(SUCCEEDED(hres)) {
3133         hres = put_value(ctx->parser->script, &exprval, &rval, ei);
3134         if(FAILED(hres))
3135             VariantClear(&rval);
3136     }
3137
3138     exprval_release(&exprval);
3139     if(FAILED(hres))
3140         return hres;
3141
3142     ret->type = EXPRVAL_VARIANT;
3143     ret->u.var = rval;
3144     return S_OK;
3145 }
3146
3147 /* ECMA-262 3rd Edition    11.13.2 */
3148 HRESULT assign_lshift_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3149 {
3150     binary_expression_t *expr = (binary_expression_t*)_expr;
3151
3152     TRACE("\n");
3153
3154     return assign_oper_eval(ctx, expr->expression1, expr->expression2, lshift_eval, ei, ret);
3155 }
3156
3157 /* ECMA-262 3rd Edition    11.13.2 */
3158 HRESULT assign_rshift_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3159 {
3160     binary_expression_t *expr = (binary_expression_t*)_expr;
3161
3162     TRACE("\n");
3163
3164     return assign_oper_eval(ctx, expr->expression1, expr->expression2, rshift_eval, ei, ret);
3165 }
3166
3167 /* ECMA-262 3rd Edition    11.13.2 */
3168 HRESULT assign_rrshift_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3169 {
3170     binary_expression_t *expr = (binary_expression_t*)_expr;
3171
3172     TRACE("\n");
3173
3174     return assign_oper_eval(ctx, expr->expression1, expr->expression2, rshift2_eval, ei, ret);
3175 }
3176
3177 /* ECMA-262 3rd Edition    11.13.2 */
3178 HRESULT assign_add_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3179 {
3180     binary_expression_t *expr = (binary_expression_t*)_expr;
3181
3182     TRACE("\n");
3183
3184     return assign_oper_eval(ctx, expr->expression1, expr->expression2, add_eval, ei, ret);
3185 }
3186
3187 /* ECMA-262 3rd Edition    11.13.2 */
3188 HRESULT assign_sub_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3189 {
3190     binary_expression_t *expr = (binary_expression_t*)_expr;
3191
3192     TRACE("\n");
3193
3194     return assign_oper_eval(ctx, expr->expression1, expr->expression2, sub_eval, ei, ret);
3195 }
3196
3197 /* ECMA-262 3rd Edition    11.13.2 */
3198 HRESULT assign_mul_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3199 {
3200     binary_expression_t *expr = (binary_expression_t*)_expr;
3201
3202     TRACE("\n");
3203
3204     return assign_oper_eval(ctx, expr->expression1, expr->expression2, mul_eval, ei, ret);
3205 }
3206
3207 /* ECMA-262 3rd Edition    11.13.2 */
3208 HRESULT assign_div_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3209 {
3210     binary_expression_t *expr = (binary_expression_t*)_expr;
3211
3212     TRACE("\n");
3213
3214     return assign_oper_eval(ctx, expr->expression1, expr->expression2, div_eval, ei, ret);
3215 }
3216
3217 /* ECMA-262 3rd Edition    11.13.2 */
3218 HRESULT assign_mod_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3219 {
3220     binary_expression_t *expr = (binary_expression_t*)_expr;
3221
3222     TRACE("\n");
3223
3224     return assign_oper_eval(ctx, expr->expression1, expr->expression2, mod_eval, ei, ret);
3225 }
3226
3227 /* ECMA-262 3rd Edition    11.13.2 */
3228 HRESULT assign_and_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3229 {
3230     binary_expression_t *expr = (binary_expression_t*)_expr;
3231
3232     TRACE("\n");
3233
3234     return assign_oper_eval(ctx, expr->expression1, expr->expression2, bitand_eval, ei, ret);
3235 }
3236
3237 /* ECMA-262 3rd Edition    11.13.2 */
3238 HRESULT assign_or_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3239 {
3240     binary_expression_t *expr = (binary_expression_t*)_expr;
3241
3242     TRACE("\n");
3243
3244     return assign_oper_eval(ctx, expr->expression1, expr->expression2, bitor_eval, ei, ret);
3245 }
3246
3247 /* ECMA-262 3rd Edition    11.13.2 */
3248 HRESULT assign_xor_expression_eval(exec_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3249 {
3250     binary_expression_t *expr = (binary_expression_t*)_expr;
3251
3252     TRACE("\n");
3253
3254     return assign_oper_eval(ctx, expr->expression1, expr->expression2, xor_eval, ei, ret);
3255 }