dlls/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 #include <assert.h>
  24
  25 #include "jscript.h"
  26 #include "engine.h"
  27
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
  31
  32 #define EXPR_NOVAL   0x0001
  33 #define EXPR_NEWREF  0x0002
  34 #define EXPR_STRREF  0x0004
  35
  36 struct _return_type_t {
  37     enum{
  38         RT_NORMAL,
  39         RT_RETURN,
  40         RT_BREAK,
  41         RT_CONTINUE
  42     } type;
  43     jsexcept_t ei;
  44 };
  45
  46 static inline HRESULT stat_eval(script_ctx_t *ctx, statement_t *stat, return_type_t *rt, VARIANT *ret)
  47 {
  48     return stat->eval(ctx, stat, rt, ret);
  49 }
  50
  51 static inline HRESULT expr_eval(script_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
  52 {
  53     return expr->eval(ctx, expr, flags, ei, ret);
  54 }
  55
  56 static HRESULT stack_push(exec_ctx_t *ctx, VARIANT *v)
  57 {
  58     if(!ctx->stack_size) {
  59         ctx->stack = heap_alloc(16*sizeof(VARIANT));
  60         if(!ctx->stack)
  61             return E_OUTOFMEMORY;
  62         ctx->stack_size = 16;
  63     }else if(ctx->stack_size == ctx->top) {
  64         VARIANT *new_stack;
  65
  66         new_stack = heap_realloc(ctx->stack, ctx->stack_size*2*sizeof(VARIANT));
  67         if(!new_stack) {
  68             VariantClear(v);
  69             return E_OUTOFMEMORY;
  70         }
  71
  72         ctx->stack = new_stack;
  73         ctx->stack_size *= 2;
  74     }
  75
  76     ctx->stack[ctx->top++] = *v;
  77     return S_OK;
  78 }
  79
  80 static HRESULT stack_push_bool(exec_ctx_t *ctx, BOOL b)
  81 {
  82     VARIANT v;
  83
  84     V_VT(&v) = VT_BOOL;
  85     V_BOOL(&v) = b ? VARIANT_TRUE : VARIANT_FALSE;
  86     return stack_push(ctx, &v);
  87 }
  88
  89 static inline VARIANT *stack_pop(exec_ctx_t *ctx)
  90 {
  91     assert(ctx->top);
  92     return ctx->stack + --ctx->top;
  93 }
  94
  95 static void stack_popn(exec_ctx_t *ctx, unsigned n)
  96 {
  97     while(n--)
  98         VariantClear(stack_pop(ctx));
  99 }
 100
 101 static void exprval_release(exprval_t *val)
 102 {
 103     switch(val->type) {
 104     case EXPRVAL_VARIANT:
 105         if(V_VT(&val->u.var) != VT_EMPTY)
 106             VariantClear(&val->u.var);
 107         return;
 108     case EXPRVAL_IDREF:
 109         if(val->u.idref.disp)
 110             IDispatch_Release(val->u.idref.disp);
 111         return;
 112     case EXPRVAL_NAMEREF:
 113         if(val->u.nameref.disp)
 114             IDispatch_Release(val->u.nameref.disp);
 115         SysFreeString(val->u.nameref.name);
 116         return;
 117     case EXPRVAL_INVALID:
 118         SysFreeString(val->u.identifier);
 119     }
 120 }
 121
 122 /* ECMA-262 3rd Edition    8.7.1 */
 123 static HRESULT exprval_value(script_ctx_t *ctx, exprval_t *val, jsexcept_t *ei, VARIANT *ret)
 124 {
 125     V_VT(ret) = VT_EMPTY;
 126
 127     switch(val->type) {
 128     case EXPRVAL_VARIANT:
 129         return VariantCopy(ret, &val->u.var);
 130     case EXPRVAL_IDREF:
 131         if(!val->u.idref.disp) {
 132             FIXME("throw ReferenceError\n");
 133             return E_FAIL;
 134         }
 135
 136         return disp_propget(ctx, val->u.idref.disp, val->u.idref.id, ret, ei, NULL/*FIXME*/);
 137     case EXPRVAL_NAMEREF:
 138         break;
 139     case EXPRVAL_INVALID:
 140         return throw_type_error(ctx, ei, JS_E_UNDEFINED_VARIABLE, val->u.identifier);
 141     }
 142
 143     ERR("type %d\n", val->type);
 144     return E_FAIL;
 145 }
 146
 147 static HRESULT exprval_to_value(script_ctx_t *ctx, exprval_t *val, jsexcept_t *ei, VARIANT *ret)
 148 {
 149     if(val->type == EXPRVAL_VARIANT) {
 150         *ret = val->u.var;
 151         V_VT(&val->u.var) = VT_EMPTY;
 152         return S_OK;
 153     }
 154
 155     return exprval_value(ctx, val, ei, ret);
 156 }
 157
 158 static HRESULT exprval_to_boolean(script_ctx_t *ctx, exprval_t *exprval, jsexcept_t *ei, VARIANT_BOOL *b)
 159 {
 160     if(exprval->type != EXPRVAL_VARIANT) {
 161         VARIANT val;
 162         HRESULT hres;
 163
 164         hres = exprval_to_value(ctx, exprval, ei, &val);
 165         if(FAILED(hres))
 166             return hres;
 167
 168         hres = to_boolean(&val, b);
 169         VariantClear(&val);
 170         return hres;
 171     }
 172
 173     return to_boolean(&exprval->u.var, b);
 174 }
 175
 176 static void exprval_init(exprval_t *val)
 177 {
 178     val->type = EXPRVAL_VARIANT;
 179     V_VT(&val->u.var) = VT_EMPTY;
 180 }
 181
 182 static void exprval_set_idref(exprval_t *val, IDispatch *disp, DISPID id)
 183 {
 184     val->type = EXPRVAL_IDREF;
 185     val->u.idref.disp = disp;
 186     val->u.idref.id = id;
 187
 188     if(disp)
 189         IDispatch_AddRef(disp);
 190 }
 191
 192 HRESULT scope_push(scope_chain_t *scope, jsdisp_t *obj, scope_chain_t **ret)
 193 {
 194     scope_chain_t *new_scope;
 195
 196     new_scope = heap_alloc(sizeof(scope_chain_t));
 197     if(!new_scope)
 198         return E_OUTOFMEMORY;
 199
 200     new_scope->ref = 1;
 201
 202     jsdisp_addref(obj);
 203     new_scope->obj = obj;
 204
 205     if(scope) {
 206         scope_addref(scope);
 207         new_scope->next = scope;
 208     }else {
 209         new_scope->next = NULL;
 210     }
 211
 212     *ret = new_scope;
 213     return S_OK;
 214 }
 215
 216 static void scope_pop(scope_chain_t **scope)
 217 {
 218     scope_chain_t *tmp;
 219
 220     tmp = *scope;
 221     *scope = tmp->next;
 222     scope_release(tmp);
 223 }
 224
 225 void scope_release(scope_chain_t *scope)
 226 {
 227     if(--scope->ref)
 228         return;
 229
 230     if(scope->next)
 231         scope_release(scope->next);
 232
 233     jsdisp_release(scope->obj);
 234     heap_free(scope);
 235 }
 236
 237 HRESULT create_exec_ctx(script_ctx_t *script_ctx, IDispatch *this_obj, jsdisp_t *var_disp,
 238         scope_chain_t *scope, BOOL is_global, exec_ctx_t **ret)
 239 {
 240     exec_ctx_t *ctx;
 241
 242     ctx = heap_alloc_zero(sizeof(exec_ctx_t));
 243     if(!ctx)
 244         return E_OUTOFMEMORY;
 245
 246     ctx->ref = 1;
 247     ctx->is_global = is_global;
 248
 249     if(this_obj)
 250         ctx->this_obj = this_obj;
 251     else if(script_ctx->host_global)
 252         ctx->this_obj = script_ctx->host_global;
 253     else
 254         ctx->this_obj = to_disp(script_ctx->global);
 255     IDispatch_AddRef(ctx->this_obj);
 256
 257     jsdisp_addref(var_disp);
 258     ctx->var_disp = var_disp;
 259
 260     if(scope) {
 261         scope_addref(scope);
 262         ctx->scope_chain = scope;
 263     }
 264
 265     *ret = ctx;
 266     return S_OK;
 267 }
 268
 269 void exec_release(exec_ctx_t *ctx)
 270 {
 271     if(--ctx->ref)
 272         return;
 273
 274     if(ctx->scope_chain)
 275         scope_release(ctx->scope_chain);
 276     if(ctx->var_disp)
 277         jsdisp_release(ctx->var_disp);
 278     if(ctx->this_obj)
 279         IDispatch_Release(ctx->this_obj);
 280     heap_free(ctx->stack);
 281     heap_free(ctx);
 282 }
 283
 284 static HRESULT disp_get_id(script_ctx_t *ctx, IDispatch *disp, BSTR name, DWORD flags, DISPID *id)
 285 {
 286     IDispatchEx *dispex;
 287     HRESULT hres;
 288
 289     hres = IDispatch_QueryInterface(disp, &IID_IDispatchEx, (void**)&dispex);
 290     if(FAILED(hres)) {
 291         TRACE("unsing IDispatch\n");
 292
 293         *id = 0;
 294         return IDispatch_GetIDsOfNames(disp, &IID_NULL, &name, 1, 0, id);
 295     }
 296
 297     *id = 0;
 298     hres = IDispatchEx_GetDispID(dispex, name, make_grfdex(ctx, flags|fdexNameCaseSensitive), id);
 299     IDispatchEx_Release(dispex);
 300     return hres;
 301 }
 302
 303 /* ECMA-262 3rd Edition    8.7.2 */
 304 static HRESULT put_value(script_ctx_t *ctx, exprval_t *ref, VARIANT *v, jsexcept_t *ei)
 305 {
 306     if(ref->type != EXPRVAL_IDREF)
 307         return throw_reference_error(ctx, ei, JS_E_ILLEGAL_ASSIGN, NULL);
 308
 309     return disp_propput(ctx, ref->u.idref.disp, ref->u.idref.id, v, ei, NULL/*FIXME*/);
 310 }
 311
 312 static inline BOOL is_null(const VARIANT *v)
 313 {
 314     return V_VT(v) == VT_NULL || (V_VT(v) == VT_DISPATCH && !V_DISPATCH(v));
 315 }
 316
 317 static HRESULT disp_cmp(IDispatch *disp1, IDispatch *disp2, BOOL *ret)
 318 {
 319     IObjectIdentity *identity;
 320     IUnknown *unk1, *unk2;
 321     HRESULT hres;
 322
 323     if(disp1 == disp2) {
 324         *ret = TRUE;
 325         return S_OK;
 326     }
 327
 328     if(!disp1 || !disp2) {
 329         *ret = FALSE;
 330         return S_OK;
 331     }
 332
 333     hres = IDispatch_QueryInterface(disp1, &IID_IUnknown, (void**)&unk1);
 334     if(FAILED(hres))
 335         return hres;
 336
 337     hres = IDispatch_QueryInterface(disp2, &IID_IUnknown, (void**)&unk2);
 338     if(FAILED(hres)) {
 339         IUnknown_Release(unk1);
 340         return hres;
 341     }
 342
 343     if(unk1 == unk2) {
 344         *ret = TRUE;
 345     }else {
 346         hres = IUnknown_QueryInterface(unk1, &IID_IObjectIdentity, (void**)&identity);
 347         if(SUCCEEDED(hres)) {
 348             hres = IObjectIdentity_IsEqualObject(identity, unk2);
 349             IObjectIdentity_Release(identity);
 350             *ret = hres == S_OK;
 351         }else {
 352             *ret = FALSE;
 353         }
 354     }
 355
 356     IUnknown_Release(unk1);
 357     IUnknown_Release(unk2);
 358     return S_OK;
 359 }
 360
 361 /* ECMA-262 3rd Edition    11.9.6 */
 362 static HRESULT equal2_values(VARIANT *lval, VARIANT *rval, BOOL *ret)
 363 {
 364     TRACE("\n");
 365
 366     if(V_VT(lval) != V_VT(rval)) {
 367         if(is_num_vt(V_VT(lval)) && is_num_vt(V_VT(rval)))
 368             *ret = num_val(lval) == num_val(rval);
 369         else if(is_null(lval))
 370             *ret = is_null(rval);
 371         else
 372             *ret = FALSE;
 373         return S_OK;
 374     }
 375
 376     switch(V_VT(lval)) {
 377     case VT_EMPTY:
 378     case VT_NULL:
 379         *ret = VARIANT_TRUE;
 380         break;
 381     case VT_I4:
 382         *ret = V_I4(lval) == V_I4(rval);
 383         break;
 384     case VT_R8:
 385         *ret = V_R8(lval) == V_R8(rval);
 386         break;
 387     case VT_BSTR:
 388         if(!V_BSTR(lval))
 389             *ret = SysStringLen(V_BSTR(rval))?FALSE:TRUE;
 390         else if(!V_BSTR(rval))
 391             *ret = SysStringLen(V_BSTR(lval))?FALSE:TRUE;
 392         else
 393             *ret = !strcmpW(V_BSTR(lval), V_BSTR(rval));
 394         break;
 395     case VT_DISPATCH:
 396         return disp_cmp(V_DISPATCH(lval), V_DISPATCH(rval), ret);
 397     case VT_BOOL:
 398         *ret = !V_BOOL(lval) == !V_BOOL(rval);
 399         break;
 400     default:
 401         FIXME("unimplemented vt %d\n", V_VT(lval));
 402         return E_NOTIMPL;
 403     }
 404
 405     return S_OK;
 406 }
 407
 408 static HRESULT literal_to_var(script_ctx_t *ctx, literal_t *literal, VARIANT *v)
 409 {
 410     switch(literal->type) {
 411     case LT_NULL:
 412         V_VT(v) = VT_NULL;
 413         break;
 414     case LT_INT:
 415         V_VT(v) = VT_I4;
 416         V_I4(v) = literal->u.lval;
 417         break;
 418     case LT_DOUBLE:
 419         V_VT(v) = VT_R8;
 420         V_R8(v) = literal->u.dval;
 421         break;
 422     case LT_STRING: {
 423         BSTR str = SysAllocString(literal->u.wstr);
 424         if(!str)
 425             return E_OUTOFMEMORY;
 426
 427         V_VT(v) = VT_BSTR;
 428         V_BSTR(v) = str;
 429         break;
 430     }
 431     case LT_BOOL:
 432         V_VT(v) = VT_BOOL;
 433         V_BOOL(v) = literal->u.bval;
 434         break;
 435     case LT_REGEXP: {
 436         jsdisp_t *regexp;
 437         HRESULT hres;
 438
 439         hres = create_regexp(ctx, literal->u.regexp.str, literal->u.regexp.str_len,
 440                              literal->u.regexp.flags, &regexp);
 441         if(FAILED(hres))
 442             return hres;
 443
 444         var_set_jsdisp(v, regexp);
 445     }
 446     }
 447
 448     return S_OK;
 449 }
 450
 451 static BOOL lookup_global_members(script_ctx_t *ctx, BSTR identifier, exprval_t *ret)
 452 {
 453     named_item_t *item;
 454     DISPID id;
 455     HRESULT hres;
 456
 457     for(item = ctx->named_items; item; item = item->next) {
 458         if(item->flags & SCRIPTITEM_GLOBALMEMBERS) {
 459             hres = disp_get_id(ctx, item->disp, identifier, 0, &id);
 460             if(SUCCEEDED(hres)) {
 461                 if(ret)
 462                     exprval_set_idref(ret, item->disp, id);
 463                 return TRUE;
 464             }
 465         }
 466     }
 467
 468     return FALSE;
 469 }
 470
 471 HRESULT exec_source(exec_ctx_t *ctx, parser_ctx_t *parser, source_elements_t *source, BOOL from_eval,
 472         jsexcept_t *ei, VARIANT *retv)
 473 {
 474     script_ctx_t *script = parser->script;
 475     function_declaration_t *func;
 476     parser_ctx_t *prev_parser;
 477     var_list_t *var;
 478     VARIANT val, tmp;
 479     statement_t *stat;
 480     exec_ctx_t *prev_ctx;
 481     return_type_t rt;
 482     HRESULT hres = S_OK;
 483
 484     for(func = source->functions; func; func = func->next) {
 485         jsdisp_t *func_obj;
 486         VARIANT var;
 487
 488         hres = create_source_function(parser, func->expr->parameter_list, func->expr->source_elements,
 489                 ctx->scope_chain, func->expr->src_str, func->expr->src_len, &func_obj);
 490         if(FAILED(hres))
 491             return hres;
 492
 493         var_set_jsdisp(&var, func_obj);
 494         hres = jsdisp_propput_name(ctx->var_disp, func->expr->identifier, &var, ei, NULL);
 495         jsdisp_release(func_obj);
 496         if(FAILED(hres))
 497             return hres;
 498     }
 499
 500     for(var = source->variables; var; var = var->next) {
 501         DISPID id = 0;
 502         BSTR name;
 503
 504         name = SysAllocString(var->identifier);
 505         if(!name)
 506             return E_OUTOFMEMORY;
 507
 508         if(!ctx->is_global || !lookup_global_members(parser->script, name, NULL))
 509             hres = jsdisp_get_id(ctx->var_disp, var->identifier, fdexNameEnsure, &id);
 510         SysFreeString(name);
 511         if(FAILED(hres))
 512             return hres;
 513     }
 514
 515     prev_ctx = script->exec_ctx;
 516     script->exec_ctx = ctx;
 517
 518     prev_parser = ctx->parser;
 519     ctx->parser = parser;
 520
 521     V_VT(&val) = VT_EMPTY;
 522     memset(&rt, 0, sizeof(rt));
 523     rt.type = RT_NORMAL;
 524
 525     for(stat = source->statement; stat; stat = stat->next) {
 526         hres = stat_eval(script, stat, &rt, &tmp);
 527         if(FAILED(hres))
 528             break;
 529
 530         VariantClear(&val);
 531         val = tmp;
 532         if(rt.type != RT_NORMAL)
 533             break;
 534     }
 535
 536     script->exec_ctx = prev_ctx;
 537     ctx->parser = prev_parser;
 538
 539     if(rt.type != RT_NORMAL && rt.type != RT_RETURN) {
 540         FIXME("wrong rt %d\n", rt.type);
 541         hres = E_FAIL;
 542     }
 543
 544     *ei = rt.ei;
 545     if(FAILED(hres)) {
 546         VariantClear(&val);
 547         return hres;
 548     }
 549
 550     if(!retv || (!from_eval && rt.type != RT_RETURN))
 551         VariantClear(&val);
 552     if(retv)
 553         *retv = val;
 554     return S_OK;
 555 }
 556
 557 /* ECMA-262 3rd Edition    10.1.4 */
 558 static HRESULT identifier_eval(script_ctx_t *ctx, BSTR identifier, DWORD flags, jsexcept_t *ei, exprval_t *ret)
 559 {
 560     scope_chain_t *scope;
 561     named_item_t *item;
 562     DISPID id = 0;
 563     HRESULT hres;
 564
 565     TRACE("%s\n", debugstr_w(identifier));
 566
 567     for(scope = ctx->exec_ctx->scope_chain; scope; scope = scope->next) {
 568         hres = jsdisp_get_id(scope->obj, identifier, 0, &id);
 569         if(SUCCEEDED(hres)) {
 570             exprval_set_idref(ret, to_disp(scope->obj), id);
 571             return S_OK;
 572         }
 573     }
 574
 575     hres = jsdisp_get_id(ctx->global, identifier, 0, &id);
 576     if(SUCCEEDED(hres)) {
 577         exprval_set_idref(ret, to_disp(ctx->global), id);
 578         return S_OK;
 579     }
 580
 581     for(item = ctx->named_items; item; item = item->next) {
 582         if((item->flags & SCRIPTITEM_ISVISIBLE) && !strcmpW(item->name, identifier)) {
 583             if(!item->disp) {
 584                 IUnknown *unk;
 585
 586                 if(!ctx->site)
 587                     break;
 588
 589                 hres = IActiveScriptSite_GetItemInfo(ctx->site, identifier,
 590                                                      SCRIPTINFO_IUNKNOWN, &unk, NULL);
 591                 if(FAILED(hres)) {
 592                     WARN("GetItemInfo failed: %08x\n", hres);
 593                     break;
 594                 }
 595
 596                 hres = IUnknown_QueryInterface(unk, &IID_IDispatch, (void**)&item->disp);
 597                 IUnknown_Release(unk);
 598                 if(FAILED(hres)) {
 599                     WARN("object does not implement IDispatch\n");
 600                     break;
 601                 }
 602             }
 603
 604             ret->type = EXPRVAL_VARIANT;
 605             V_VT(&ret->u.var) = VT_DISPATCH;
 606             V_DISPATCH(&ret->u.var) = item->disp;
 607             IDispatch_AddRef(item->disp);
 608             return S_OK;
 609         }
 610     }
 611
 612     if(lookup_global_members(ctx, identifier, ret))
 613         return S_OK;
 614
 615     if(flags & EXPR_NEWREF) {
 616         hres = jsdisp_get_id(ctx->global, identifier, fdexNameEnsure, &id);
 617         if(FAILED(hres))
 618             return hres;
 619
 620         exprval_set_idref(ret, to_disp(ctx->global), id);
 621         return S_OK;
 622     }
 623
 624     ret->type = EXPRVAL_INVALID;
 625     ret->u.identifier = SysAllocString(identifier);
 626     if(!ret->u.identifier)
 627         return E_OUTOFMEMORY;
 628
 629     return S_OK;
 630 }
 631
 632 /* ECMA-262 3rd Edition    12.1 */
 633 HRESULT block_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 634 {
 635     block_statement_t *stat = (block_statement_t*)_stat;
 636     VARIANT val, tmp;
 637     statement_t *iter;
 638     HRESULT hres = S_OK;
 639
 640     TRACE("\n");
 641
 642     V_VT(&val) = VT_EMPTY;
 643     for(iter = stat->stat_list; iter; iter = iter->next) {
 644         hres = stat_eval(ctx, iter, rt, &tmp);
 645         if(FAILED(hres))
 646             break;
 647
 648         VariantClear(&val);
 649         val = tmp;
 650         if(rt->type != RT_NORMAL)
 651             break;
 652     }
 653
 654     if(FAILED(hres)) {
 655         VariantClear(&val);
 656         return hres;
 657     }
 658
 659     *ret = val;
 660     return S_OK;
 661 }
 662
 663 /* ECMA-262 3rd Edition    12.2 */
 664 static HRESULT variable_list_eval(script_ctx_t *ctx, variable_declaration_t *var_list, jsexcept_t *ei)
 665 {
 666     variable_declaration_t *iter;
 667     HRESULT hres = S_OK;
 668
 669     for(iter = var_list; iter; iter = iter->next) {
 670         exprval_t exprval;
 671         VARIANT val;
 672
 673         if(!iter->expr)
 674             continue;
 675
 676         hres = expr_eval(ctx, iter->expr, 0, ei, &exprval);
 677         if(FAILED(hres))
 678             break;
 679
 680         hres = exprval_to_value(ctx, &exprval, ei, &val);
 681         exprval_release(&exprval);
 682         if(FAILED(hres))
 683             break;
 684
 685         hres = jsdisp_propput_name(ctx->exec_ctx->var_disp, iter->identifier, &val, ei, NULL/*FIXME*/);
 686         VariantClear(&val);
 687         if(FAILED(hres))
 688             break;
 689     }
 690
 691     return hres;
 692 }
 693
 694 /* ECMA-262 3rd Edition    12.2 */
 695 HRESULT var_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 696 {
 697     var_statement_t *stat = (var_statement_t*)_stat;
 698     HRESULT hres;
 699
 700     TRACE("\n");
 701
 702     hres = variable_list_eval(ctx, stat->variable_list, &rt->ei);
 703     if(FAILED(hres))
 704         return hres;
 705
 706     V_VT(ret) = VT_EMPTY;
 707     return S_OK;
 708 }
 709
 710 /* ECMA-262 3rd Edition    12.3 */
 711 HRESULT empty_statement_eval(script_ctx_t *ctx, statement_t *stat, return_type_t *rt, VARIANT *ret)
 712 {
 713     TRACE("\n");
 714
 715     V_VT(ret) = VT_EMPTY;
 716     return S_OK;
 717 }
 718
 719 /* ECMA-262 3rd Edition    12.4 */
 720 HRESULT expression_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 721 {
 722     expression_statement_t *stat = (expression_statement_t*)_stat;
 723     exprval_t exprval;
 724     VARIANT val;
 725     HRESULT hres;
 726
 727     TRACE("\n");
 728
 729     hres = expr_eval(ctx, stat->expr, EXPR_NOVAL, &rt->ei, &exprval);
 730     if(FAILED(hres))
 731         return hres;
 732
 733     hres = exprval_to_value(ctx, &exprval, &rt->ei, &val);
 734     exprval_release(&exprval);
 735     if(FAILED(hres))
 736         return hres;
 737
 738     *ret = val;
 739     TRACE("= %s\n", debugstr_variant(ret));
 740     return S_OK;
 741 }
 742
 743 /* ECMA-262 3rd Edition    12.5 */
 744 HRESULT if_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 745 {
 746     if_statement_t *stat = (if_statement_t*)_stat;
 747     exprval_t exprval;
 748     VARIANT_BOOL b;
 749     HRESULT hres;
 750
 751     TRACE("\n");
 752
 753     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
 754     if(FAILED(hres))
 755         return hres;
 756
 757     hres = exprval_to_boolean(ctx, &exprval, &rt->ei, &b);
 758     exprval_release(&exprval);
 759     if(FAILED(hres))
 760         return hres;
 761
 762     if(b)
 763         hres = stat_eval(ctx, stat->if_stat, rt, ret);
 764     else if(stat->else_stat)
 765         hres = stat_eval(ctx, stat->else_stat, rt, ret);
 766     else
 767         V_VT(ret) = VT_EMPTY;
 768
 769     return hres;
 770 }
 771
 772 /* ECMA-262 3rd Edition    12.6.2 */
 773 HRESULT while_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 774 {
 775     while_statement_t *stat = (while_statement_t*)_stat;
 776     exprval_t exprval;
 777     VARIANT val, tmp;
 778     VARIANT_BOOL b;
 779     BOOL test_expr;
 780     HRESULT hres;
 781
 782     TRACE("\n");
 783
 784     V_VT(&val) = VT_EMPTY;
 785     test_expr = !stat->do_while;
 786
 787     while(1) {
 788         if(test_expr) {
 789             hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
 790             if(FAILED(hres))
 791                 break;
 792
 793             hres = exprval_to_boolean(ctx, &exprval, &rt->ei, &b);
 794             exprval_release(&exprval);
 795             if(FAILED(hres) || !b)
 796                 break;
 797         }else {
 798             test_expr = TRUE;
 799         }
 800
 801         hres = stat_eval(ctx, stat->statement, rt, &tmp);
 802         if(FAILED(hres))
 803             break;
 804
 805         VariantClear(&val);
 806         val = tmp;
 807
 808         if(rt->type == RT_CONTINUE)
 809             rt->type = RT_NORMAL;
 810         if(rt->type != RT_NORMAL)
 811             break;
 812     }
 813
 814     if(FAILED(hres)) {
 815         VariantClear(&val);
 816         return hres;
 817     }
 818
 819     if(rt->type == RT_BREAK)
 820         rt->type = RT_NORMAL;
 821
 822     *ret = val;
 823     return S_OK;
 824 }
 825
 826 /* ECMA-262 3rd Edition    12.6.3 */
 827 HRESULT for_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 828 {
 829     for_statement_t *stat = (for_statement_t*)_stat;
 830     VARIANT val, tmp, retv;
 831     exprval_t exprval;
 832     VARIANT_BOOL b;
 833     HRESULT hres;
 834
 835     TRACE("\n");
 836
 837     if(stat->variable_list) {
 838         hres = variable_list_eval(ctx, stat->variable_list, &rt->ei);
 839         if(FAILED(hres))
 840             return hres;
 841     }else if(stat->begin_expr) {
 842         hres = expr_eval(ctx, stat->begin_expr, EXPR_NEWREF, &rt->ei, &exprval);
 843         if(FAILED(hres))
 844             return hres;
 845
 846         hres = exprval_to_value(ctx, &exprval, &rt->ei, &val);
 847         exprval_release(&exprval);
 848         if(FAILED(hres))
 849             return hres;
 850
 851         VariantClear(&val);
 852     }
 853
 854     V_VT(&retv) = VT_EMPTY;
 855
 856     while(1) {
 857         if(stat->expr) {
 858             hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
 859             if(FAILED(hres))
 860                 break;
 861
 862             hres = exprval_to_boolean(ctx, &exprval, &rt->ei, &b);
 863             exprval_release(&exprval);
 864             if(FAILED(hres) || !b)
 865                 break;
 866         }
 867
 868         hres = stat_eval(ctx, stat->statement, rt, &tmp);
 869         if(FAILED(hres))
 870             break;
 871
 872         VariantClear(&retv);
 873         retv = tmp;
 874
 875         if(rt->type == RT_CONTINUE)
 876             rt->type = RT_NORMAL;
 877         else if(rt->type != RT_NORMAL)
 878             break;
 879
 880         if(stat->end_expr) {
 881             hres = expr_eval(ctx, stat->end_expr, 0, &rt->ei, &exprval);
 882             if(FAILED(hres))
 883                 break;
 884
 885             hres = exprval_to_value(ctx, &exprval, &rt->ei, &val);
 886             exprval_release(&exprval);
 887             if(FAILED(hres))
 888                 break;
 889
 890             VariantClear(&val);
 891         }
 892     }
 893
 894     if(FAILED(hres)) {
 895         VariantClear(&retv);
 896         return hres;
 897     }
 898
 899     if(rt->type == RT_BREAK)
 900         rt->type = RT_NORMAL;
 901
 902     *ret = retv;
 903     return S_OK;
 904 }
 905
 906 /* ECMA-262 3rd Edition    12.6.4 */
 907 HRESULT forin_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
 908 {
 909     forin_statement_t *stat = (forin_statement_t*)_stat;
 910     VARIANT val, name, retv, tmp;
 911     DISPID id = DISPID_STARTENUM;
 912     BSTR str, identifier = NULL;
 913     IDispatchEx *in_obj;
 914     exprval_t exprval;
 915     HRESULT hres;
 916
 917     TRACE("\n");
 918
 919     if(stat->variable) {
 920         hres = variable_list_eval(ctx, stat->variable, &rt->ei);
 921         if(FAILED(hres))
 922             return hres;
 923     }
 924
 925     hres = expr_eval(ctx, stat->in_expr, EXPR_NEWREF, &rt->ei, &exprval);
 926     if(FAILED(hres))
 927         return hres;
 928
 929     hres = exprval_to_value(ctx, &exprval, &rt->ei, &val);
 930     exprval_release(&exprval);
 931     if(FAILED(hres))
 932         return hres;
 933
 934     if(V_VT(&val) != VT_DISPATCH) {
 935         TRACE("in vt %d\n", V_VT(&val));
 936         VariantClear(&val);
 937         V_VT(ret) = VT_EMPTY;
 938         return S_OK;
 939     }
 940
 941     hres = IDispatch_QueryInterface(V_DISPATCH(&val), &IID_IDispatchEx, (void**)&in_obj);
 942     IDispatch_Release(V_DISPATCH(&val));
 943     if(FAILED(hres)) {
 944         TRACE("Object doesn't support IDispatchEx\n");
 945         V_VT(ret) = VT_EMPTY;
 946         return S_OK;
 947     }
 948
 949     V_VT(&retv) = VT_EMPTY;
 950
 951     if(stat->variable)
 952         identifier = SysAllocString(stat->variable->identifier);
 953
 954     while(1) {
 955         hres = IDispatchEx_GetNextDispID(in_obj, fdexEnumDefault, id, &id);
 956         if(FAILED(hres) || hres == S_FALSE)
 957             break;
 958
 959         hres = IDispatchEx_GetMemberName(in_obj, id, &str);
 960         if(FAILED(hres))
 961             break;
 962
 963         TRACE("iter %s\n", debugstr_w(str));
 964
 965         if(stat->variable)
 966             hres = identifier_eval(ctx, identifier, 0, NULL, &exprval);
 967         else
 968             hres = expr_eval(ctx, stat->expr, EXPR_NEWREF, &rt->ei, &exprval);
 969         if(SUCCEEDED(hres)) {
 970             V_VT(&name) = VT_BSTR;
 971             V_BSTR(&name) = str;
 972             hres = put_value(ctx, &exprval, &name, &rt->ei);
 973             exprval_release(&exprval);
 974         }
 975         SysFreeString(str);
 976         if(FAILED(hres))
 977             break;
 978
 979         hres = stat_eval(ctx, stat->statement, rt, &tmp);
 980         if(FAILED(hres))
 981             break;
 982
 983         VariantClear(&retv);
 984         retv = tmp;
 985
 986         if(rt->type == RT_CONTINUE)
 987             rt->type = RT_NORMAL;
 988         else if(rt->type != RT_NORMAL)
 989             break;
 990     }
 991
 992     SysFreeString(identifier);
 993     IDispatchEx_Release(in_obj);
 994     if(FAILED(hres)) {
 995         VariantClear(&retv);
 996         return hres;
 997     }
 998
 999     if(rt->type == RT_BREAK)
1000         rt->type = RT_NORMAL;
1001
1002     *ret = retv;
1003     return S_OK;
1004 }
1005
1006 /* ECMA-262 3rd Edition    12.7 */
1007 HRESULT continue_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1008 {
1009     branch_statement_t *stat = (branch_statement_t*)_stat;
1010
1011     TRACE("\n");
1012
1013     if(stat->identifier) {
1014         FIXME("indentifier not implemented\n");
1015         return E_NOTIMPL;
1016     }
1017
1018     rt->type = RT_CONTINUE;
1019     V_VT(ret) = VT_EMPTY;
1020     return S_OK;
1021 }
1022
1023 /* ECMA-262 3rd Edition    12.8 */
1024 HRESULT break_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1025 {
1026     branch_statement_t *stat = (branch_statement_t*)_stat;
1027
1028     TRACE("\n");
1029
1030     if(stat->identifier) {
1031         FIXME("indentifier not implemented\n");
1032         return E_NOTIMPL;
1033     }
1034
1035     rt->type = RT_BREAK;
1036     V_VT(ret) = VT_EMPTY;
1037     return S_OK;
1038 }
1039
1040 /* ECMA-262 3rd Edition    12.9 */
1041 HRESULT return_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1042 {
1043     expression_statement_t *stat = (expression_statement_t*)_stat;
1044     HRESULT hres;
1045
1046     TRACE("\n");
1047
1048     if(stat->expr) {
1049         exprval_t exprval;
1050
1051         hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1052         if(FAILED(hres))
1053             return hres;
1054
1055         hres = exprval_to_value(ctx, &exprval, &rt->ei, ret);
1056         exprval_release(&exprval);
1057         if(FAILED(hres))
1058             return hres;
1059     }else {
1060         V_VT(ret) = VT_EMPTY;
1061     }
1062
1063     TRACE("= %s\n", debugstr_variant(ret));
1064     rt->type = RT_RETURN;
1065     return S_OK;
1066 }
1067
1068 /* ECMA-262 3rd Edition    12.10 */
1069 HRESULT with_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1070 {
1071     with_statement_t *stat = (with_statement_t*)_stat;
1072     exprval_t exprval;
1073     IDispatch *disp;
1074     jsdisp_t *obj;
1075     VARIANT val;
1076     HRESULT hres;
1077
1078     TRACE("\n");
1079
1080     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1081     if(FAILED(hres))
1082         return hres;
1083
1084     hres = exprval_to_value(ctx, &exprval, &rt->ei, &val);
1085     exprval_release(&exprval);
1086     if(FAILED(hres))
1087         return hres;
1088
1089     hres = to_object(ctx, &val, &disp);
1090     VariantClear(&val);
1091     if(FAILED(hres))
1092         return hres;
1093
1094     obj = iface_to_jsdisp((IUnknown*)disp);
1095     IDispatch_Release(disp);
1096     if(!obj) {
1097         FIXME("disp id not jsdisp\n");
1098         return E_NOTIMPL;
1099     }
1100
1101     hres = scope_push(ctx->exec_ctx->scope_chain, obj, &ctx->exec_ctx->scope_chain);
1102     jsdisp_release(obj);
1103     if(FAILED(hres))
1104         return hres;
1105
1106     hres = stat_eval(ctx, stat->statement, rt, ret);
1107
1108     scope_pop(&ctx->exec_ctx->scope_chain);
1109     return hres;
1110 }
1111
1112 /* ECMA-262 3rd Edition    12.12 */
1113 HRESULT labelled_statement_eval(script_ctx_t *ctx, statement_t *stat, return_type_t *rt, VARIANT *ret)
1114 {
1115     FIXME("\n");
1116     return E_NOTIMPL;
1117 }
1118
1119 /* ECMA-262 3rd Edition    12.13 */
1120 HRESULT switch_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1121 {
1122     switch_statement_t *stat = (switch_statement_t*)_stat;
1123     case_clausule_t *iter, *default_clausule = NULL;
1124     statement_t *stat_iter;
1125     VARIANT val, cval;
1126     exprval_t exprval;
1127     BOOL b;
1128     HRESULT hres;
1129
1130     TRACE("\n");
1131
1132     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1133     if(FAILED(hres))
1134         return hres;
1135
1136     hres = exprval_to_value(ctx, &exprval, &rt->ei, &val);
1137     exprval_release(&exprval);
1138     if(FAILED(hres))
1139         return hres;
1140
1141     for(iter = stat->case_list; iter; iter = iter->next) {
1142         if(!iter->expr) {
1143             default_clausule = iter;
1144             continue;
1145         }
1146
1147         hres = expr_eval(ctx, iter->expr, 0, &rt->ei, &exprval);
1148         if(FAILED(hres))
1149             break;
1150
1151         hres = exprval_to_value(ctx, &exprval, &rt->ei, &cval);
1152         exprval_release(&exprval);
1153         if(FAILED(hres))
1154             break;
1155
1156         hres = equal2_values(&val, &cval, &b);
1157         VariantClear(&cval);
1158         if(FAILED(hres) || b)
1159             break;
1160     }
1161
1162     VariantClear(&val);
1163     if(FAILED(hres))
1164         return hres;
1165
1166     if(!iter)
1167         iter = default_clausule;
1168
1169     V_VT(&val) = VT_EMPTY;
1170     if(iter) {
1171         VARIANT tmp;
1172
1173         for(stat_iter = iter->stat; stat_iter; stat_iter = stat_iter->next) {
1174             hres = stat_eval(ctx, stat_iter, rt, &tmp);
1175             if(FAILED(hres))
1176                 break;
1177
1178             VariantClear(&val);
1179             val = tmp;
1180
1181             if(rt->type != RT_NORMAL)
1182                 break;
1183         }
1184     }
1185
1186     if(FAILED(hres)) {
1187         VariantClear(&val);
1188         return hres;
1189     }
1190
1191     if(rt->type == RT_BREAK)
1192         rt->type = RT_NORMAL;
1193
1194     *ret = val;
1195     return S_OK;
1196 }
1197
1198 /* ECMA-262 3rd Edition    12.13 */
1199 HRESULT throw_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1200 {
1201     expression_statement_t *stat = (expression_statement_t*)_stat;
1202     exprval_t exprval;
1203     VARIANT val;
1204     HRESULT hres;
1205
1206     TRACE("\n");
1207
1208     hres = expr_eval(ctx, stat->expr, 0, &rt->ei, &exprval);
1209     if(FAILED(hres))
1210         return hres;
1211
1212     hres = exprval_to_value(ctx, &exprval, &rt->ei, &val);
1213     exprval_release(&exprval);
1214     if(FAILED(hres))
1215         return hres;
1216
1217     rt->ei.var = val;
1218     return DISP_E_EXCEPTION;
1219 }
1220
1221 /* ECMA-262 3rd Edition    12.14 */
1222 static HRESULT catch_eval(script_ctx_t *ctx, catch_block_t *block, return_type_t *rt, VARIANT *ret)
1223 {
1224     jsdisp_t *var_disp;
1225     VARIANT ex, val;
1226     HRESULT hres;
1227
1228     ex = rt->ei.var;
1229     memset(&rt->ei, 0, sizeof(jsexcept_t));
1230
1231     hres = create_dispex(ctx, NULL, NULL, &var_disp);
1232     if(SUCCEEDED(hres)) {
1233         hres = jsdisp_propput_name(var_disp, block->identifier, &ex, &rt->ei, NULL/*FIXME*/);
1234         if(SUCCEEDED(hres)) {
1235             hres = scope_push(ctx->exec_ctx->scope_chain, var_disp, &ctx->exec_ctx->scope_chain);
1236             if(SUCCEEDED(hres)) {
1237                 hres = stat_eval(ctx, block->statement, rt, &val);
1238                 scope_pop(&ctx->exec_ctx->scope_chain);
1239             }
1240         }
1241
1242         jsdisp_release(var_disp);
1243     }
1244
1245     VariantClear(&ex);
1246     if(FAILED(hres))
1247         return hres;
1248
1249     *ret = val;
1250     return S_OK;
1251 }
1252
1253 /* ECMA-262 3rd Edition    12.14 */
1254 HRESULT try_statement_eval(script_ctx_t *ctx, statement_t *_stat, return_type_t *rt, VARIANT *ret)
1255 {
1256     try_statement_t *stat = (try_statement_t*)_stat;
1257     VARIANT val;
1258     HRESULT hres;
1259
1260     TRACE("\n");
1261
1262     hres = stat_eval(ctx, stat->try_statement, rt, &val);
1263     if(FAILED(hres)) {
1264         TRACE("EXCEPTION\n");
1265         if(!stat->catch_block)
1266             return hres;
1267
1268         hres = catch_eval(ctx, stat->catch_block, rt, &val);
1269         if(FAILED(hres))
1270             return hres;
1271     }
1272
1273     if(stat->finally_statement) {
1274         VariantClear(&val);
1275         hres = stat_eval(ctx, stat->finally_statement, rt, &val);
1276         if(FAILED(hres))
1277             return hres;
1278     }
1279
1280     *ret = val;
1281     return S_OK;
1282 }
1283
1284 static HRESULT return_bool(exprval_t *ret, DWORD b)
1285 {
1286     ret->type = EXPRVAL_VARIANT;
1287     V_VT(&ret->u.var) = VT_BOOL;
1288     V_BOOL(&ret->u.var) = b ? VARIANT_TRUE : VARIANT_FALSE;
1289
1290     return S_OK;
1291 }
1292
1293 static HRESULT get_binary_expr_values(script_ctx_t *ctx, binary_expression_t *expr, jsexcept_t *ei, VARIANT *lval, VARIANT *rval)
1294 {
1295     exprval_t exprval;
1296     HRESULT hres;
1297
1298     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1299     if(FAILED(hres))
1300         return hres;
1301
1302     hres = exprval_to_value(ctx, &exprval, ei, lval);
1303     exprval_release(&exprval);
1304     if(FAILED(hres))
1305         return hres;
1306
1307     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
1308     if(SUCCEEDED(hres)) {
1309         hres = exprval_to_value(ctx, &exprval, ei, rval);
1310         exprval_release(&exprval);
1311     }
1312
1313     if(FAILED(hres)) {
1314         VariantClear(lval);
1315         return hres;
1316     }
1317
1318     return S_OK;
1319 }
1320
1321 typedef HRESULT (*oper_t)(script_ctx_t*,VARIANT*,VARIANT*,jsexcept_t*,VARIANT*);
1322
1323 static HRESULT binary_expr_eval(script_ctx_t *ctx, binary_expression_t *expr, oper_t oper, jsexcept_t *ei,
1324         exprval_t *ret)
1325 {
1326     VARIANT lval, rval, retv;
1327     HRESULT hres;
1328
1329     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
1330     if(FAILED(hres))
1331         return hres;
1332
1333     hres = oper(ctx, &lval, &rval, ei, &retv);
1334     VariantClear(&lval);
1335     VariantClear(&rval);
1336     if(FAILED(hres))
1337         return hres;
1338
1339     ret->type = EXPRVAL_VARIANT;
1340     ret->u.var = retv;
1341     return S_OK;
1342 }
1343
1344 /* ECMA-262 3rd Edition    11.13.2 */
1345 static HRESULT assign_oper_eval(script_ctx_t *ctx, expression_t *lexpr, expression_t *rexpr, oper_t oper,
1346                                 jsexcept_t *ei, exprval_t *ret)
1347 {
1348     VARIANT retv, lval, rval;
1349     exprval_t exprval, exprvalr;
1350     HRESULT hres;
1351
1352     hres = expr_eval(ctx, lexpr, EXPR_NEWREF, ei, &exprval);
1353     if(FAILED(hres))
1354         return hres;
1355
1356     hres = exprval_value(ctx, &exprval, ei, &lval);
1357     if(SUCCEEDED(hres)) {
1358         hres = expr_eval(ctx, rexpr, 0, ei, &exprvalr);
1359         if(SUCCEEDED(hres)) {
1360             hres = exprval_value(ctx, &exprvalr, ei, &rval);
1361             exprval_release(&exprvalr);
1362         }
1363         if(SUCCEEDED(hres)) {
1364             hres = oper(ctx, &lval, &rval, ei, &retv);
1365             VariantClear(&rval);
1366         }
1367         VariantClear(&lval);
1368     }
1369
1370     if(SUCCEEDED(hres)) {
1371         hres = put_value(ctx, &exprval, &retv, ei);
1372         if(FAILED(hres))
1373             VariantClear(&retv);
1374     }
1375     exprval_release(&exprval);
1376
1377     if(FAILED(hres))
1378         return hres;
1379
1380     ret->type = EXPRVAL_VARIANT;
1381     ret->u.var = retv;
1382     return S_OK;
1383 }
1384
1385 /* ECMA-262 3rd Edition    13 */
1386 HRESULT function_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1387 {
1388     function_expression_t *expr = (function_expression_t*)_expr;
1389     VARIANT var;
1390     HRESULT hres;
1391
1392     TRACE("\n");
1393
1394     if(expr->identifier) {
1395         hres = jsdisp_propget_name(ctx->exec_ctx->var_disp, expr->identifier, &var, ei, NULL/*FIXME*/);
1396         if(FAILED(hres))
1397             return hres;
1398     }else {
1399         jsdisp_t *dispex;
1400
1401         hres = create_source_function(ctx->exec_ctx->parser, expr->parameter_list, expr->source_elements, ctx->exec_ctx->scope_chain,
1402                 expr->src_str, expr->src_len, &dispex);
1403         if(FAILED(hres))
1404             return hres;
1405
1406         var_set_jsdisp(&var, dispex);
1407     }
1408
1409     ret->type = EXPRVAL_VARIANT;
1410     ret->u.var = var;
1411     return S_OK;
1412 }
1413
1414 /* ECMA-262 3rd Edition    11.12 */
1415 HRESULT conditional_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1416 {
1417     conditional_expression_t *expr = (conditional_expression_t*)_expr;
1418     exprval_t exprval;
1419     VARIANT_BOOL b;
1420     HRESULT hres;
1421
1422     TRACE("\n");
1423
1424     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1425     if(FAILED(hres))
1426         return hres;
1427
1428     hres = exprval_to_boolean(ctx, &exprval, ei, &b);
1429     exprval_release(&exprval);
1430     if(FAILED(hres))
1431         return hres;
1432
1433     return expr_eval(ctx, b ? expr->true_expression : expr->false_expression, flags, ei, ret);
1434 }
1435
1436 /* ECMA-262 3rd Edition    11.2.1 */
1437 HRESULT array_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1438 {
1439     array_expression_t *expr = (array_expression_t*)_expr;
1440     exprval_t exprval;
1441     VARIANT member, val;
1442     DISPID id;
1443     BSTR str;
1444     IDispatch *obj = NULL;
1445     HRESULT hres;
1446
1447     TRACE("\n");
1448
1449     hres = expr_eval(ctx, expr->member_expr, 0, ei, &exprval);
1450     if(FAILED(hres))
1451         return hres;
1452
1453     hres = exprval_to_value(ctx, &exprval, ei, &member);
1454     exprval_release(&exprval);
1455     if(FAILED(hres))
1456         return hres;
1457
1458     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
1459     if(SUCCEEDED(hres)) {
1460         hres = exprval_to_value(ctx, &exprval, ei, &val);
1461         exprval_release(&exprval);
1462     }
1463
1464     if(SUCCEEDED(hres)) {
1465         hres = to_object(ctx, &member, &obj);
1466         if(FAILED(hres))
1467             VariantClear(&val);
1468     }
1469     VariantClear(&member);
1470     if(SUCCEEDED(hres)) {
1471         hres = to_string(ctx, &val, ei, &str);
1472         VariantClear(&val);
1473         if(SUCCEEDED(hres)) {
1474             if(flags & EXPR_STRREF) {
1475                 ret->type = EXPRVAL_NAMEREF;
1476                 ret->u.nameref.disp = obj;
1477                 ret->u.nameref.name = str;
1478                 return S_OK;
1479             }
1480
1481             hres = disp_get_id(ctx, obj, str, flags & EXPR_NEWREF ? fdexNameEnsure : 0, &id);
1482             SysFreeString(str);
1483         }
1484
1485         if(SUCCEEDED(hres)) {
1486             exprval_set_idref(ret, obj, id);
1487         }else if(!(flags & EXPR_NEWREF) && hres == DISP_E_UNKNOWNNAME) {
1488             exprval_init(ret);
1489             hres = S_OK;
1490         }
1491
1492         IDispatch_Release(obj);
1493     }
1494
1495     return hres;
1496 }
1497
1498 /* ECMA-262 3rd Edition    11.2.1 */
1499 HRESULT member_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1500 {
1501     member_expression_t *expr = (member_expression_t*)_expr;
1502     IDispatch *obj = NULL;
1503     exprval_t exprval;
1504     VARIANT member;
1505     DISPID id;
1506     BSTR str;
1507     HRESULT hres;
1508
1509     TRACE("\n");
1510
1511     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1512     if(FAILED(hres))
1513         return hres;
1514
1515     hres = exprval_to_value(ctx, &exprval, ei, &member);
1516     exprval_release(&exprval);
1517     if(FAILED(hres))
1518         return hres;
1519
1520     hres = to_object(ctx, &member, &obj);
1521     VariantClear(&member);
1522     if(FAILED(hres))
1523         return hres;
1524
1525     str = SysAllocString(expr->identifier);
1526     if(flags & EXPR_STRREF) {
1527         ret->type = EXPRVAL_NAMEREF;
1528         ret->u.nameref.disp = obj;
1529         ret->u.nameref.name = str;
1530         return S_OK;
1531     }
1532
1533     hres = disp_get_id(ctx, obj, str, flags & EXPR_NEWREF ? fdexNameEnsure : 0, &id);
1534     SysFreeString(str);
1535     if(SUCCEEDED(hres)) {
1536         exprval_set_idref(ret, obj, id);
1537     }else if(!(flags & EXPR_NEWREF) && hres == DISP_E_UNKNOWNNAME) {
1538         exprval_init(ret);
1539         hres = S_OK;
1540     }
1541
1542     IDispatch_Release(obj);
1543     return hres;
1544 }
1545
1546 static void free_dp(DISPPARAMS *dp)
1547 {
1548     DWORD i;
1549
1550     for(i=0; i < dp->cArgs; i++)
1551         VariantClear(dp->rgvarg+i);
1552     heap_free(dp->rgvarg);
1553 }
1554
1555 static HRESULT args_to_param(script_ctx_t *ctx, argument_t *args, jsexcept_t *ei, DISPPARAMS *dp)
1556 {
1557     VARIANTARG *vargs;
1558     exprval_t exprval;
1559     argument_t *iter;
1560     DWORD cnt = 0, i;
1561     HRESULT hres = S_OK;
1562
1563     memset(dp, 0, sizeof(*dp));
1564     if(!args)
1565         return S_OK;
1566
1567     for(iter = args; iter; iter = iter->next)
1568         cnt++;
1569
1570     vargs = heap_alloc_zero(cnt * sizeof(*vargs));
1571     if(!vargs)
1572         return E_OUTOFMEMORY;
1573
1574     for(i = cnt, iter = args; iter; iter = iter->next) {
1575         hres = expr_eval(ctx, iter->expr, 0, ei, &exprval);
1576         if(FAILED(hres))
1577             break;
1578
1579         hres = exprval_to_value(ctx, &exprval, ei, vargs + (--i));
1580         exprval_release(&exprval);
1581         if(FAILED(hres))
1582             break;
1583     }
1584
1585     if(FAILED(hres)) {
1586         free_dp(dp);
1587         return hres;
1588     }
1589
1590     dp->rgvarg = vargs;
1591     dp->cArgs = cnt;
1592     return S_OK;
1593 }
1594
1595 /* ECMA-262 3rd Edition    11.2.2 */
1596 HRESULT new_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1597 {
1598     call_expression_t *expr = (call_expression_t*)_expr;
1599     exprval_t exprval;
1600     VARIANT constr, var;
1601     DISPPARAMS dp;
1602     HRESULT hres;
1603
1604     TRACE("\n");
1605
1606     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1607     if(FAILED(hres))
1608         return hres;
1609
1610     hres = args_to_param(ctx, expr->argument_list, ei, &dp);
1611     if(SUCCEEDED(hres))
1612         hres = exprval_to_value(ctx, &exprval, ei, &constr);
1613     exprval_release(&exprval);
1614     if(FAILED(hres))
1615         return hres;
1616
1617     /* NOTE: Should use to_object here */
1618
1619     if(V_VT(&constr) == VT_NULL) {
1620         VariantClear(&constr);
1621         return throw_type_error(ctx, ei, JS_E_OBJECT_EXPECTED, NULL);
1622     } else if(V_VT(&constr) != VT_DISPATCH) {
1623         VariantClear(&constr);
1624         return throw_type_error(ctx, ei, JS_E_INVALID_ACTION, NULL);
1625     } else if(!V_DISPATCH(&constr)) {
1626         VariantClear(&constr);
1627         return throw_type_error(ctx, ei, JS_E_INVALID_PROPERTY, NULL);
1628     }
1629
1630     hres = disp_call(ctx, V_DISPATCH(&constr), DISPID_VALUE,
1631             DISPATCH_CONSTRUCT, &dp, &var, ei, NULL/*FIXME*/);
1632     IDispatch_Release(V_DISPATCH(&constr));
1633     free_dp(&dp);
1634     if(FAILED(hres))
1635         return hres;
1636
1637     ret->type = EXPRVAL_VARIANT;
1638     ret->u.var = var;
1639     return S_OK;
1640 }
1641
1642 /* ECMA-262 3rd Edition    11.2.3 */
1643 HRESULT call_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1644 {
1645     call_expression_t *expr = (call_expression_t*)_expr;
1646     VARIANT var;
1647     exprval_t exprval;
1648     DISPPARAMS dp;
1649     HRESULT hres;
1650
1651     TRACE("\n");
1652
1653     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
1654     if(FAILED(hres))
1655         return hres;
1656
1657     hres = args_to_param(ctx, expr->argument_list, ei, &dp);
1658     if(SUCCEEDED(hres)) {
1659         switch(exprval.type) {
1660         case EXPRVAL_VARIANT:
1661             if(V_VT(&exprval.u.var) == VT_DISPATCH)
1662                 hres = disp_call(ctx, V_DISPATCH(&exprval.u.var), DISPID_VALUE,
1663                         DISPATCH_METHOD, &dp, flags & EXPR_NOVAL ? NULL : &var, ei, NULL/*FIXME*/);
1664             else
1665                 hres = throw_type_error(ctx, ei, JS_E_INVALID_PROPERTY, NULL);
1666             break;
1667         case EXPRVAL_IDREF:
1668             hres = disp_call(ctx, exprval.u.idref.disp, exprval.u.idref.id,
1669                     DISPATCH_METHOD, &dp, flags & EXPR_NOVAL ? NULL : &var, ei, NULL/*FIXME*/);
1670             break;
1671         case EXPRVAL_INVALID:
1672             hres = throw_type_error(ctx, ei, JS_E_OBJECT_EXPECTED, NULL);
1673             break;
1674         default:
1675             FIXME("unimplemented type %d\n", exprval.type);
1676             hres = E_NOTIMPL;
1677         }
1678
1679         free_dp(&dp);
1680     }
1681
1682     exprval_release(&exprval);
1683     if(FAILED(hres))
1684         return hres;
1685
1686     ret->type = EXPRVAL_VARIANT;
1687     if(flags & EXPR_NOVAL) {
1688         V_VT(&ret->u.var) = VT_EMPTY;
1689     }else {
1690         TRACE("= %s\n", debugstr_variant(&var));
1691         ret->u.var = var;
1692     }
1693     return S_OK;
1694 }
1695
1696 /* ECMA-262 3rd Edition    11.1.1 */
1697 HRESULT interp_this(exec_ctx_t *ctx)
1698 {
1699     VARIANT v;
1700
1701     TRACE("\n");
1702
1703     V_VT(&v) = VT_DISPATCH;
1704     V_DISPATCH(&v) = ctx->this_obj;
1705     IDispatch_AddRef(ctx->this_obj);
1706     return stack_push(ctx, &v);
1707 }
1708
1709 /* ECMA-262 3rd Edition    10.1.4 */
1710 HRESULT identifier_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1711 {
1712     identifier_expression_t *expr = (identifier_expression_t*)_expr;
1713     BSTR identifier;
1714     HRESULT hres;
1715
1716     TRACE("\n");
1717
1718     identifier = SysAllocString(expr->identifier);
1719     if(!identifier)
1720         return E_OUTOFMEMORY;
1721
1722     hres = identifier_eval(ctx, identifier, flags, ei, ret);
1723
1724     SysFreeString(identifier);
1725     return hres;
1726 }
1727
1728 /* ECMA-262 3rd Edition    7.8.1 */
1729 HRESULT interp_null(exec_ctx_t *ctx)
1730 {
1731     VARIANT v;
1732
1733     TRACE("\n");
1734
1735     V_VT(&v) = VT_NULL;
1736     return stack_push(ctx, &v);
1737 }
1738
1739 /* ECMA-262 3rd Edition    7.8.2 */
1740 HRESULT interp_bool(exec_ctx_t *ctx)
1741 {
1742     const LONG arg = ctx->parser->code->instrs[ctx->ip].arg1.lng;
1743
1744     TRACE("%s\n", arg ? "true" : "false");
1745
1746     return stack_push_bool(ctx, arg);
1747 }
1748
1749 /* ECMA-262 3rd Edition    7.8.3 */
1750 HRESULT interp_int(exec_ctx_t *ctx)
1751 {
1752     const LONG arg = ctx->parser->code->instrs[ctx->ip].arg1.lng;
1753     VARIANT v;
1754
1755     TRACE("%d\n", arg);
1756
1757     V_VT(&v) = VT_I4;
1758     V_I4(&v) = arg;
1759     return stack_push(ctx, &v);
1760 }
1761
1762 /* ECMA-262 3rd Edition    7.8.3 */
1763 HRESULT interp_double(exec_ctx_t *ctx)
1764 {
1765     const double arg = *ctx->parser->code->instrs[ctx->ip].arg1.dbl;
1766     VARIANT v;
1767
1768     TRACE("%lf\n", arg);
1769
1770     V_VT(&v) = VT_R8;
1771     V_R8(&v) = arg;
1772     return stack_push(ctx, &v);
1773 }
1774
1775 /* ECMA-262 3rd Edition    7.8.4 */
1776 HRESULT interp_str(exec_ctx_t *ctx)
1777 {
1778     const WCHAR *str = ctx->parser->code->instrs[ctx->ip].arg1.str;
1779     VARIANT v;
1780
1781     TRACE("%s\n", debugstr_w(str));
1782
1783     V_VT(&v) = VT_BSTR;
1784     V_BSTR(&v) = SysAllocString(str);
1785     if(!V_BSTR(&v))
1786         return E_OUTOFMEMORY;
1787
1788     return stack_push(ctx, &v);
1789 }
1790
1791 /* ECMA-262 3rd Edition    7.8 */
1792 HRESULT interp_regexp(exec_ctx_t *ctx)
1793 {
1794     const WCHAR *source = ctx->parser->code->instrs[ctx->ip].arg1.str;
1795     const LONG flags = ctx->parser->code->instrs[ctx->ip].arg2.lng;
1796     jsdisp_t *regexp;
1797     VARIANT v;
1798     HRESULT hres;
1799
1800     TRACE("%s %x\n", debugstr_w(source), flags);
1801
1802     hres = create_regexp(ctx->parser->script, source, strlenW(source), flags, &regexp);
1803     if(FAILED(hres))
1804         return hres;
1805
1806     var_set_jsdisp(&v, regexp);
1807     return stack_push(ctx, &v);
1808 }
1809
1810 /* ECMA-262 3rd Edition    11.1.4 */
1811 HRESULT array_literal_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1812 {
1813     array_literal_expression_t *expr = (array_literal_expression_t*)_expr;
1814     DWORD length = 0, i = 0;
1815     array_element_t *elem;
1816     jsdisp_t *array;
1817     exprval_t exprval;
1818     VARIANT val;
1819     HRESULT hres;
1820
1821     TRACE("\n");
1822
1823     for(elem = expr->element_list; elem; elem = elem->next)
1824         length += elem->elision+1;
1825     length += expr->length;
1826
1827     hres = create_array(ctx, length, &array);
1828     if(FAILED(hres))
1829         return hres;
1830
1831     for(elem = expr->element_list; elem; elem = elem->next) {
1832         i += elem->elision;
1833
1834         hres = expr_eval(ctx, elem->expr, 0, ei, &exprval);
1835         if(FAILED(hres))
1836             break;
1837
1838         hres = exprval_to_value(ctx, &exprval, ei, &val);
1839         exprval_release(&exprval);
1840         if(FAILED(hres))
1841             break;
1842
1843         hres = jsdisp_propput_idx(array, i, &val, ei, NULL/*FIXME*/);
1844         VariantClear(&val);
1845         if(FAILED(hres))
1846             break;
1847
1848         i++;
1849     }
1850
1851     if(FAILED(hres)) {
1852         jsdisp_release(array);
1853         return hres;
1854     }
1855
1856     ret->type = EXPRVAL_VARIANT;
1857     var_set_jsdisp(&ret->u.var, array);
1858     return S_OK;
1859 }
1860
1861 /* ECMA-262 3rd Edition    11.1.5 */
1862 HRESULT property_value_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1863 {
1864     property_value_expression_t *expr = (property_value_expression_t*)_expr;
1865     VARIANT val, tmp;
1866     jsdisp_t *obj;
1867     prop_val_t *iter;
1868     exprval_t exprval;
1869     BSTR name;
1870     HRESULT hres;
1871
1872     TRACE("\n");
1873
1874     hres = create_object(ctx, NULL, &obj);
1875     if(FAILED(hres))
1876         return hres;
1877
1878     for(iter = expr->property_list; iter; iter = iter->next) {
1879         hres = literal_to_var(ctx, iter->name, &tmp);
1880         if(FAILED(hres))
1881             break;
1882
1883         hres = to_string(ctx, &tmp, ei, &name);
1884         VariantClear(&tmp);
1885         if(FAILED(hres))
1886             break;
1887
1888         hres = expr_eval(ctx, iter->value, 0, ei, &exprval);
1889         if(SUCCEEDED(hres)) {
1890             hres = exprval_to_value(ctx, &exprval, ei, &val);
1891             exprval_release(&exprval);
1892             if(SUCCEEDED(hres)) {
1893                 hres = jsdisp_propput_name(obj, name, &val, ei, NULL/*FIXME*/);
1894                 VariantClear(&val);
1895             }
1896         }
1897
1898         SysFreeString(name);
1899         if(FAILED(hres))
1900             break;
1901     }
1902
1903     if(FAILED(hres)) {
1904         jsdisp_release(obj);
1905         return hres;
1906     }
1907
1908     ret->type = EXPRVAL_VARIANT;
1909     var_set_jsdisp(&ret->u.var, obj);
1910     return S_OK;
1911 }
1912
1913 /* ECMA-262 3rd Edition    11.14 */
1914 HRESULT comma_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1915 {
1916     binary_expression_t *expr = (binary_expression_t*)_expr;
1917     VARIANT lval, rval;
1918     HRESULT hres;
1919
1920     TRACE("\n");
1921
1922     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
1923     if(FAILED(hres))
1924         return hres;
1925
1926     VariantClear(&lval);
1927
1928     ret->type = EXPRVAL_VARIANT;
1929     ret->u.var = rval;
1930     return S_OK;
1931 }
1932
1933 /* ECMA-262 3rd Edition    11.11 */
1934 HRESULT logical_or_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1935 {
1936     binary_expression_t *expr = (binary_expression_t*)_expr;
1937     exprval_t exprval;
1938     VARIANT_BOOL b;
1939     VARIANT val;
1940     HRESULT hres;
1941
1942     TRACE("\n");
1943
1944     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1945     if(FAILED(hres))
1946         return hres;
1947
1948     hres = exprval_to_value(ctx, &exprval, ei, &val);
1949     exprval_release(&exprval);
1950     if(FAILED(hres))
1951         return hres;
1952
1953     hres = to_boolean(&val, &b);
1954     if(SUCCEEDED(hres) && b) {
1955         ret->type = EXPRVAL_VARIANT;
1956         ret->u.var = val;
1957         return S_OK;
1958     }
1959
1960     VariantClear(&val);
1961     if(FAILED(hres))
1962         return hres;
1963
1964     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
1965     if(FAILED(hres))
1966         return hres;
1967
1968     hres = exprval_to_value(ctx, &exprval, ei, &val);
1969     exprval_release(&exprval);
1970     if(FAILED(hres))
1971         return hres;
1972
1973     ret->type = EXPRVAL_VARIANT;
1974     ret->u.var = val;
1975     return S_OK;
1976 }
1977
1978 /* ECMA-262 3rd Edition    11.11 */
1979 HRESULT logical_and_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1980 {
1981     binary_expression_t *expr = (binary_expression_t*)_expr;
1982     exprval_t exprval;
1983     VARIANT_BOOL b;
1984     VARIANT val;
1985     HRESULT hres;
1986
1987     TRACE("\n");
1988
1989     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1990     if(FAILED(hres))
1991         return hres;
1992
1993     hres = exprval_to_value(ctx, &exprval, ei, &val);
1994     exprval_release(&exprval);
1995     if(FAILED(hres))
1996         return hres;
1997
1998     hres = to_boolean(&val, &b);
1999     if(SUCCEEDED(hres) && !b) {
2000         ret->type = EXPRVAL_VARIANT;
2001         ret->u.var = val;
2002         return S_OK;
2003     }
2004
2005     VariantClear(&val);
2006     if(FAILED(hres))
2007         return hres;
2008
2009     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
2010     if(FAILED(hres))
2011         return hres;
2012
2013     hres = exprval_to_value(ctx, &exprval, ei, &val);
2014     exprval_release(&exprval);
2015     if(FAILED(hres))
2016         return hres;
2017
2018     ret->type = EXPRVAL_VARIANT;
2019     ret->u.var = val;
2020     return S_OK;
2021 }
2022
2023 /* ECMA-262 3rd Edition    11.10 */
2024 static HRESULT bitor_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2025 {
2026     INT li, ri;
2027     HRESULT hres;
2028
2029     hres = to_int32(ctx, lval, ei, &li);
2030     if(FAILED(hres))
2031         return hres;
2032
2033     hres = to_int32(ctx, rval, ei, &ri);
2034     if(FAILED(hres))
2035         return hres;
2036
2037     V_VT(retv) = VT_I4;
2038     V_I4(retv) = li|ri;
2039     return S_OK;
2040 }
2041
2042 /* ECMA-262 3rd Edition    11.10 */
2043 HRESULT binary_or_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2044 {
2045     binary_expression_t *expr = (binary_expression_t*)_expr;
2046
2047     TRACE("\n");
2048
2049     return binary_expr_eval(ctx, expr, bitor_eval, ei, ret);
2050 }
2051
2052 /* ECMA-262 3rd Edition    11.10 */
2053 static HRESULT xor_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2054 {
2055     INT li, ri;
2056     HRESULT hres;
2057
2058     hres = to_int32(ctx, lval, ei, &li);
2059     if(FAILED(hres))
2060         return hres;
2061
2062     hres = to_int32(ctx, rval, ei, &ri);
2063     if(FAILED(hres))
2064         return hres;
2065
2066     V_VT(retv) = VT_I4;
2067     V_I4(retv) = li^ri;
2068     return S_OK;
2069 }
2070
2071 /* ECMA-262 3rd Edition    11.10 */
2072 HRESULT binary_xor_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2073 {
2074     binary_expression_t *expr = (binary_expression_t*)_expr;
2075
2076     TRACE("\n");
2077
2078     return binary_expr_eval(ctx, expr, xor_eval, ei, ret);
2079 }
2080
2081 /* ECMA-262 3rd Edition    11.10 */
2082 static HRESULT bitand_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2083 {
2084     INT li, ri;
2085     HRESULT hres;
2086
2087     hres = to_int32(ctx, lval, ei, &li);
2088     if(FAILED(hres))
2089         return hres;
2090
2091     hres = to_int32(ctx, rval, ei, &ri);
2092     if(FAILED(hres))
2093         return hres;
2094
2095     V_VT(retv) = VT_I4;
2096     V_I4(retv) = li&ri;
2097     return S_OK;
2098 }
2099
2100 /* ECMA-262 3rd Edition    11.10 */
2101 HRESULT binary_and_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2102 {
2103     binary_expression_t *expr = (binary_expression_t*)_expr;
2104
2105     TRACE("\n");
2106
2107     return binary_expr_eval(ctx, expr, bitand_eval, ei, ret);
2108 }
2109
2110 /* ECMA-262 3rd Edition    11.8.6 */
2111 static HRESULT instanceof_eval(script_ctx_t *ctx, VARIANT *inst, VARIANT *objv, jsexcept_t *ei, VARIANT *retv)
2112 {
2113     jsdisp_t *obj, *iter, *tmp = NULL;
2114     VARIANT_BOOL ret = VARIANT_FALSE;
2115     BOOL b;
2116     VARIANT var;
2117     HRESULT hres;
2118
2119     static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
2120
2121     if(V_VT(objv) != VT_DISPATCH || !V_DISPATCH(objv))
2122         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
2123
2124     obj = iface_to_jsdisp((IUnknown*)V_DISPATCH(objv));
2125     if(!obj) {
2126         FIXME("non-jsdisp objects not supported\n");
2127         return E_FAIL;
2128     }
2129
2130     if(is_class(obj, JSCLASS_FUNCTION)) {
2131         hres = jsdisp_propget_name(obj, prototypeW, &var, ei, NULL/*FIXME*/);
2132     }else {
2133         hres = throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
2134     }
2135     jsdisp_release(obj);
2136     if(FAILED(hres))
2137         return hres;
2138
2139     if(V_VT(&var) == VT_DISPATCH) {
2140         if(V_VT(inst) == VT_DISPATCH)
2141             tmp = iface_to_jsdisp((IUnknown*)V_DISPATCH(inst));
2142         for(iter = tmp; iter; iter = iter->prototype) {
2143             hres = disp_cmp(V_DISPATCH(&var), to_disp(iter), &b);
2144             if(FAILED(hres))
2145                 break;
2146             if(b) {
2147                 ret = VARIANT_TRUE;
2148                 break;
2149             }
2150         }
2151
2152         if(tmp)
2153             jsdisp_release(tmp);
2154     }else {
2155         FIXME("prototype is not an object\n");
2156         hres = E_FAIL;
2157     }
2158
2159     VariantClear(&var);
2160     if(FAILED(hres))
2161         return hres;
2162
2163     V_VT(retv) = VT_BOOL;
2164     V_BOOL(retv) = ret;
2165     return S_OK;
2166 }
2167
2168 /* ECMA-262 3rd Edition    11.8.6 */
2169 HRESULT instanceof_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2170 {
2171     binary_expression_t *expr = (binary_expression_t*)_expr;
2172
2173     TRACE("\n");
2174
2175     return binary_expr_eval(ctx, expr, instanceof_eval, ei, ret);
2176 }
2177
2178 /* ECMA-262 3rd Edition    11.8.7 */
2179 HRESULT interp_in(exec_ctx_t *ctx)
2180 {
2181     VARIANT *obj, *v;
2182     DISPID id = 0;
2183     BOOL ret;
2184     BSTR str;
2185     HRESULT hres;
2186
2187     TRACE("\n");
2188
2189     obj = stack_pop(ctx);
2190     v = stack_pop(ctx);
2191
2192     if(V_VT(obj) != VT_DISPATCH || !V_DISPATCH(obj)) {
2193         VariantClear(obj);
2194         VariantClear(v);
2195         return throw_type_error(ctx->parser->script, &ctx->ei, JS_E_OBJECT_EXPECTED, NULL);
2196     }
2197
2198     hres = to_string(ctx->parser->script, v, &ctx->ei, &str);
2199     VariantClear(v);
2200     if(FAILED(hres)) {
2201         IDispatch_Release(V_DISPATCH(obj));
2202         return hres;
2203     }
2204
2205     hres = disp_get_id(ctx->parser->script, V_DISPATCH(obj), str, 0, &id);
2206     IDispatch_Release(V_DISPATCH(obj));
2207     SysFreeString(str);
2208     if(SUCCEEDED(hres))
2209         ret = TRUE;
2210     else if(hres == DISP_E_UNKNOWNNAME)
2211         ret = FALSE;
2212     else
2213         return hres;
2214
2215     return stack_push_bool(ctx, ret);
2216 }
2217
2218 /* ECMA-262 3rd Edition    11.6.1 */
2219 static HRESULT add_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2220 {
2221     VARIANT r, l;
2222     HRESULT hres;
2223
2224     hres = to_primitive(ctx, lval, ei, &l, NO_HINT);
2225     if(FAILED(hres))
2226         return hres;
2227
2228     hres = to_primitive(ctx, rval, ei, &r, NO_HINT);
2229     if(FAILED(hres)) {
2230         VariantClear(&l);
2231         return hres;
2232     }
2233
2234     if(V_VT(&l) == VT_BSTR || V_VT(&r) == VT_BSTR) {
2235         BSTR lstr = NULL, rstr = NULL;
2236
2237         if(V_VT(&l) == VT_BSTR)
2238             lstr = V_BSTR(&l);
2239         else
2240             hres = to_string(ctx, &l, ei, &lstr);
2241
2242         if(SUCCEEDED(hres)) {
2243             if(V_VT(&r) == VT_BSTR)
2244                 rstr = V_BSTR(&r);
2245             else
2246                 hres = to_string(ctx, &r, ei, &rstr);
2247         }
2248
2249         if(SUCCEEDED(hres)) {
2250             int len1, len2;
2251
2252             len1 = SysStringLen(lstr);
2253             len2 = SysStringLen(rstr);
2254
2255             V_VT(retv) = VT_BSTR;
2256             V_BSTR(retv) = SysAllocStringLen(NULL, len1+len2);
2257             memcpy(V_BSTR(retv), lstr, len1*sizeof(WCHAR));
2258             memcpy(V_BSTR(retv)+len1, rstr, (len2+1)*sizeof(WCHAR));
2259         }
2260
2261         if(V_VT(&l) != VT_BSTR)
2262             SysFreeString(lstr);
2263         if(V_VT(&r) != VT_BSTR)
2264             SysFreeString(rstr);
2265     }else {
2266         VARIANT nl, nr;
2267
2268         hres = to_number(ctx, &l, ei, &nl);
2269         if(SUCCEEDED(hres)) {
2270             hres = to_number(ctx, &r, ei, &nr);
2271             if(SUCCEEDED(hres))
2272                 num_set_val(retv, num_val(&nl) + num_val(&nr));
2273         }
2274     }
2275
2276     VariantClear(&r);
2277     VariantClear(&l);
2278     return hres;
2279 }
2280
2281 /* ECMA-262 3rd Edition    11.6.1 */
2282 HRESULT interp_add(exec_ctx_t *ctx)
2283 {
2284     VARIANT *l, *r, ret;
2285     HRESULT hres;
2286
2287     r = stack_pop(ctx);
2288     l = stack_pop(ctx);
2289
2290     TRACE("%s + %s\n", debugstr_variant(l), debugstr_variant(r));
2291
2292     hres = add_eval(ctx->parser->script, l, r, &ctx->ei, &ret);
2293     if(FAILED(hres))
2294         return hres;
2295
2296     return stack_push(ctx, &ret);
2297 }
2298
2299 /* ECMA-262 3rd Edition    11.6.2 */
2300 static HRESULT sub_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2301 {
2302     VARIANT lnum, rnum;
2303     HRESULT hres;
2304
2305     hres = to_number(ctx, lval, ei, &lnum);
2306     if(FAILED(hres))
2307         return hres;
2308
2309     hres = to_number(ctx, rval, ei, &rnum);
2310     if(FAILED(hres))
2311         return hres;
2312
2313     num_set_val(retv, num_val(&lnum) - num_val(&rnum));
2314     return S_OK;
2315 }
2316
2317 /* ECMA-262 3rd Edition    11.6.2 */
2318 HRESULT sub_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2319 {
2320     binary_expression_t *expr = (binary_expression_t*)_expr;
2321
2322     TRACE("\n");
2323
2324     return binary_expr_eval(ctx, expr, sub_eval, ei, ret);
2325 }
2326
2327 /* ECMA-262 3rd Edition    11.5.1 */
2328 static HRESULT mul_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2329 {
2330     VARIANT lnum, rnum;
2331     HRESULT hres;
2332
2333     hres = to_number(ctx, lval, ei, &lnum);
2334     if(FAILED(hres))
2335         return hres;
2336
2337     hres = to_number(ctx, rval, ei, &rnum);
2338     if(FAILED(hres))
2339         return hres;
2340
2341     num_set_val(retv, num_val(&lnum) * num_val(&rnum));
2342     return S_OK;
2343 }
2344
2345 /* ECMA-262 3rd Edition    11.5.1 */
2346 HRESULT mul_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2347 {
2348     binary_expression_t *expr = (binary_expression_t*)_expr;
2349
2350     TRACE("\n");
2351
2352     return binary_expr_eval(ctx, expr, mul_eval, ei, ret);
2353 }
2354
2355 /* ECMA-262 3rd Edition    11.5.2 */
2356 static HRESULT div_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2357 {
2358     VARIANT lnum, rnum;
2359     HRESULT hres;
2360
2361     hres = to_number(ctx, lval, ei, &lnum);
2362     if(FAILED(hres))
2363         return hres;
2364
2365     hres = to_number(ctx, rval, ei, &rnum);
2366     if(FAILED(hres))
2367         return hres;
2368
2369     num_set_val(retv, num_val(&lnum) / num_val(&rnum));
2370     return S_OK;
2371 }
2372
2373 /* ECMA-262 3rd Edition    11.5.2 */
2374 HRESULT div_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2375 {
2376     binary_expression_t *expr = (binary_expression_t*)_expr;
2377
2378     TRACE("\n");
2379
2380     return binary_expr_eval(ctx, expr, div_eval, ei, ret);
2381 }
2382
2383 /* ECMA-262 3rd Edition    11.5.3 */
2384 static HRESULT mod_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2385 {
2386     VARIANT lnum, rnum;
2387     HRESULT hres;
2388
2389     hres = to_number(ctx, lval, ei, &lnum);
2390     if(FAILED(hres))
2391         return hres;
2392
2393     hres = to_number(ctx, rval, ei, &rnum);
2394     if(FAILED(hres))
2395         return hres;
2396
2397     num_set_val(retv, fmod(num_val(&lnum), num_val(&rnum)));
2398     return S_OK;
2399 }
2400
2401 /* ECMA-262 3rd Edition    11.5.3 */
2402 HRESULT mod_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2403 {
2404     binary_expression_t *expr = (binary_expression_t*)_expr;
2405
2406     TRACE("\n");
2407
2408     return binary_expr_eval(ctx, expr, mod_eval, ei, ret);
2409 }
2410
2411 /* ECMA-262 3rd Edition    11.4.2 */
2412 HRESULT delete_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2413 {
2414     unary_expression_t *expr = (unary_expression_t*)_expr;
2415     VARIANT_BOOL b = VARIANT_FALSE;
2416     exprval_t exprval;
2417     HRESULT hres;
2418
2419     TRACE("\n");
2420
2421     hres = expr_eval(ctx, expr->expression, EXPR_STRREF, ei, &exprval);
2422     if(FAILED(hres))
2423         return hres;
2424
2425     switch(exprval.type) {
2426     case EXPRVAL_IDREF: {
2427         IDispatchEx *dispex;
2428
2429         hres = IDispatch_QueryInterface(exprval.u.nameref.disp, &IID_IDispatchEx, (void**)&dispex);
2430         if(SUCCEEDED(hres)) {
2431             hres = IDispatchEx_DeleteMemberByDispID(dispex, exprval.u.idref.id);
2432             b = VARIANT_TRUE;
2433             IDispatchEx_Release(dispex);
2434         }
2435         break;
2436     }
2437     case EXPRVAL_NAMEREF: {
2438         IDispatchEx *dispex;
2439
2440         hres = IDispatch_QueryInterface(exprval.u.nameref.disp, &IID_IDispatchEx, (void**)&dispex);
2441         if(SUCCEEDED(hres)) {
2442             hres = IDispatchEx_DeleteMemberByName(dispex, exprval.u.nameref.name,
2443                     make_grfdex(ctx, fdexNameCaseSensitive));
2444             b = VARIANT_TRUE;
2445             IDispatchEx_Release(dispex);
2446         }
2447         break;
2448     }
2449     default:
2450         FIXME("unsupported type %d\n", exprval.type);
2451         hres = E_NOTIMPL;
2452     }
2453
2454     exprval_release(&exprval);
2455     if(FAILED(hres))
2456         return hres;
2457
2458     return return_bool(ret, b);
2459 }
2460
2461 /* ECMA-262 3rd Edition    11.4.2 */
2462 HRESULT interp_void(exec_ctx_t *ctx)
2463 {
2464     VARIANT v;
2465
2466     TRACE("\n");
2467
2468     stack_popn(ctx, 1);
2469
2470     V_VT(&v) = VT_EMPTY;
2471     return stack_push(ctx, &v);
2472 }
2473
2474 /* ECMA-262 3rd Edition    11.4.3 */
2475 static HRESULT typeof_exprval(script_ctx_t *ctx, exprval_t *exprval, jsexcept_t *ei, const WCHAR **ret)
2476 {
2477     VARIANT val;
2478     HRESULT hres;
2479
2480     static const WCHAR booleanW[] = {'b','o','o','l','e','a','n',0};
2481     static const WCHAR functionW[] = {'f','u','n','c','t','i','o','n',0};
2482     static const WCHAR numberW[] = {'n','u','m','b','e','r',0};
2483     static const WCHAR objectW[] = {'o','b','j','e','c','t',0};
2484     static const WCHAR stringW[] = {'s','t','r','i','n','g',0};
2485     static const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
2486     static const WCHAR unknownW[] = {'u','n','k','n','o','w','n',0};
2487
2488     if(exprval->type == EXPRVAL_INVALID) {
2489         *ret = undefinedW;
2490         return S_OK;
2491     }
2492
2493     hres = exprval_to_value(ctx, exprval, ei, &val);
2494     if(FAILED(hres)) {
2495         if(exprval->type == EXPRVAL_IDREF) {
2496             *ret = unknownW;
2497             return S_OK;
2498         }
2499         return hres;
2500     }
2501
2502     switch(V_VT(&val)) {
2503     case VT_EMPTY:
2504         *ret = undefinedW;
2505         break;
2506     case VT_NULL:
2507         *ret = objectW;
2508         break;
2509     case VT_BOOL:
2510         *ret = booleanW;
2511         break;
2512     case VT_I4:
2513     case VT_R8:
2514         *ret = numberW;
2515         break;
2516     case VT_BSTR:
2517         *ret = stringW;
2518         break;
2519     case VT_DISPATCH: {
2520         jsdisp_t *dispex;
2521
2522         if(V_DISPATCH(&val) && (dispex = iface_to_jsdisp((IUnknown*)V_DISPATCH(&val)))) {
2523             *ret = is_class(dispex, JSCLASS_FUNCTION) ? functionW : objectW;
2524             jsdisp_release(dispex);
2525         }else {
2526             *ret = objectW;
2527         }
2528         break;
2529     }
2530     default:
2531         FIXME("unhandled vt %d\n", V_VT(&val));
2532         hres = E_NOTIMPL;
2533     }
2534
2535     VariantClear(&val);
2536     return hres;
2537 }
2538
2539 HRESULT typeof_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2540 {
2541     unary_expression_t *expr = (unary_expression_t*)_expr;
2542     const WCHAR *str = NULL;
2543     exprval_t exprval;
2544     HRESULT hres;
2545
2546     TRACE("\n");
2547
2548     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2549     if(FAILED(hres))
2550         return hres;
2551
2552     hres = typeof_exprval(ctx, &exprval, ei, &str);
2553     exprval_release(&exprval);
2554     if(FAILED(hres))
2555         return hres;
2556
2557     ret->type = EXPRVAL_VARIANT;
2558     V_VT(&ret->u.var) = VT_BSTR;
2559     V_BSTR(&ret->u.var) = SysAllocString(str);
2560     if(!V_BSTR(&ret->u.var))
2561         return E_OUTOFMEMORY;
2562
2563     return S_OK;
2564 }
2565
2566 /* ECMA-262 3rd Edition    11.4.7 */
2567 HRESULT minus_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2568 {
2569     unary_expression_t *expr = (unary_expression_t*)_expr;
2570     exprval_t exprval;
2571     VARIANT val, num;
2572     HRESULT hres;
2573
2574     TRACE("\n");
2575
2576     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2577     if(FAILED(hres))
2578         return hres;
2579
2580     hres = exprval_to_value(ctx, &exprval, ei, &val);
2581     exprval_release(&exprval);
2582     if(FAILED(hres))
2583         return hres;
2584
2585     hres = to_number(ctx, &val, ei, &num);
2586     VariantClear(&val);
2587     if(FAILED(hres))
2588         return hres;
2589
2590     ret->type = EXPRVAL_VARIANT;
2591     num_set_val(&ret->u.var, -num_val(&num));
2592     return S_OK;
2593 }
2594
2595 /* ECMA-262 3rd Edition    11.4.6 */
2596 HRESULT interp_tonum(exec_ctx_t *ctx)
2597 {
2598     VARIANT *v, num;
2599     HRESULT hres;
2600
2601     TRACE("\n");
2602
2603     v = stack_pop(ctx);
2604     hres = to_number(ctx->parser->script, v, &ctx->ei, &num);
2605     VariantClear(v);
2606     if(FAILED(hres))
2607         return hres;
2608
2609     return stack_push(ctx, &num);
2610 }
2611
2612 /* ECMA-262 3rd Edition    11.3.1 */
2613 HRESULT post_increment_expression_eval(script_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, &exprval, ei, &val);
2627     if(SUCCEEDED(hres)) {
2628         hres = to_number(ctx, &val, ei, &num);
2629         VariantClear(&val);
2630     }
2631
2632     if(SUCCEEDED(hres)) {
2633         VARIANT inc;
2634         num_set_val(&inc, num_val(&num)+1.0);
2635         hres = put_value(ctx, &exprval, &inc, ei);
2636     }
2637
2638     exprval_release(&exprval);
2639     if(FAILED(hres))
2640         return hres;
2641
2642     ret->type = EXPRVAL_VARIANT;
2643     ret->u.var = num;
2644     return S_OK;
2645 }
2646
2647 /* ECMA-262 3rd Edition    11.3.2 */
2648 HRESULT post_decrement_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2649 {
2650     unary_expression_t *expr = (unary_expression_t*)_expr;
2651     VARIANT val, num;
2652     exprval_t exprval;
2653     HRESULT hres;
2654
2655     TRACE("\n");
2656
2657     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2658     if(FAILED(hres))
2659         return hres;
2660
2661     hres = exprval_value(ctx, &exprval, ei, &val);
2662     if(SUCCEEDED(hres)) {
2663         hres = to_number(ctx, &val, ei, &num);
2664         VariantClear(&val);
2665     }
2666
2667     if(SUCCEEDED(hres)) {
2668         VARIANT dec;
2669         num_set_val(&dec, num_val(&num)-1.0);
2670         hres = put_value(ctx, &exprval, &dec, ei);
2671     }
2672
2673     exprval_release(&exprval);
2674     if(FAILED(hres))
2675         return hres;
2676
2677     ret->type = EXPRVAL_VARIANT;
2678     ret->u.var = num;
2679     return S_OK;
2680 }
2681
2682 /* ECMA-262 3rd Edition    11.4.4 */
2683 HRESULT pre_increment_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2684 {
2685     unary_expression_t *expr = (unary_expression_t*)_expr;
2686     VARIANT val, num;
2687     exprval_t exprval;
2688     HRESULT hres;
2689
2690     TRACE("\n");
2691
2692     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2693     if(FAILED(hres))
2694         return hres;
2695
2696     hres = exprval_value(ctx, &exprval, ei, &val);
2697     if(SUCCEEDED(hres)) {
2698         hres = to_number(ctx, &val, ei, &num);
2699         VariantClear(&val);
2700     }
2701
2702     if(SUCCEEDED(hres)) {
2703         num_set_val(&val, num_val(&num)+1.0);
2704         hres = put_value(ctx, &exprval, &val, ei);
2705     }
2706
2707     exprval_release(&exprval);
2708     if(FAILED(hres))
2709         return hres;
2710
2711     ret->type = EXPRVAL_VARIANT;
2712     ret->u.var = val;
2713     return S_OK;
2714 }
2715
2716 /* ECMA-262 3rd Edition    11.4.5 */
2717 HRESULT pre_decrement_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2718 {
2719     unary_expression_t *expr = (unary_expression_t*)_expr;
2720     VARIANT val, num;
2721     exprval_t exprval;
2722     HRESULT hres;
2723
2724     TRACE("\n");
2725
2726     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2727     if(FAILED(hres))
2728         return hres;
2729
2730     hres = exprval_value(ctx, &exprval, ei, &val);
2731     if(SUCCEEDED(hres)) {
2732         hres = to_number(ctx, &val, ei, &num);
2733         VariantClear(&val);
2734     }
2735
2736     if(SUCCEEDED(hres)) {
2737         num_set_val(&val, num_val(&num)-1.0);
2738         hres = put_value(ctx, &exprval, &val, ei);
2739     }
2740
2741     exprval_release(&exprval);
2742     if(FAILED(hres))
2743         return hres;
2744
2745     ret->type = EXPRVAL_VARIANT;
2746     ret->u.var = val;
2747     return S_OK;
2748 }
2749
2750 /* ECMA-262 3rd Edition    11.9.3 */
2751 static HRESULT equal_values(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, BOOL *ret)
2752 {
2753     if(V_VT(lval) == V_VT(rval) || (is_num_vt(V_VT(lval)) && is_num_vt(V_VT(rval))))
2754        return equal2_values(lval, rval, ret);
2755
2756     /* FIXME: NULL disps should be handled in more general way */
2757     if(V_VT(lval) == VT_DISPATCH && !V_DISPATCH(lval)) {
2758         VARIANT v;
2759         V_VT(&v) = VT_NULL;
2760         return equal_values(ctx, &v, rval, ei, ret);
2761     }
2762
2763     if(V_VT(rval) == VT_DISPATCH && !V_DISPATCH(rval)) {
2764         VARIANT v;
2765         V_VT(&v) = VT_NULL;
2766         return equal_values(ctx, lval, &v, ei, ret);
2767     }
2768
2769     if((V_VT(lval) == VT_NULL && V_VT(rval) == VT_EMPTY) ||
2770        (V_VT(lval) == VT_EMPTY && V_VT(rval) == VT_NULL)) {
2771         *ret = TRUE;
2772         return S_OK;
2773     }
2774
2775     if(V_VT(lval) == VT_BSTR && is_num_vt(V_VT(rval))) {
2776         VARIANT v;
2777         HRESULT hres;
2778
2779         hres = to_number(ctx, lval, ei, &v);
2780         if(FAILED(hres))
2781             return hres;
2782
2783         return equal_values(ctx, &v, rval, ei, ret);
2784     }
2785
2786     if(V_VT(rval) == VT_BSTR && is_num_vt(V_VT(lval))) {
2787         VARIANT v;
2788         HRESULT hres;
2789
2790         hres = to_number(ctx, rval, ei, &v);
2791         if(FAILED(hres))
2792             return hres;
2793
2794         return equal_values(ctx, lval, &v, ei, ret);
2795     }
2796
2797     if(V_VT(rval) == VT_BOOL) {
2798         VARIANT v;
2799
2800         V_VT(&v) = VT_I4;
2801         V_I4(&v) = V_BOOL(rval) ? 1 : 0;
2802         return equal_values(ctx, lval, &v, ei, ret);
2803     }
2804
2805     if(V_VT(lval) == VT_BOOL) {
2806         VARIANT v;
2807
2808         V_VT(&v) = VT_I4;
2809         V_I4(&v) = V_BOOL(lval) ? 1 : 0;
2810         return equal_values(ctx, &v, rval, ei, ret);
2811     }
2812
2813
2814     if(V_VT(rval) == VT_DISPATCH && (V_VT(lval) == VT_BSTR || is_num_vt(V_VT(lval)))) {
2815         VARIANT v;
2816         HRESULT hres;
2817
2818         hres = to_primitive(ctx, rval, ei, &v, NO_HINT);
2819         if(FAILED(hres))
2820             return hres;
2821
2822         hres = equal_values(ctx, lval, &v, ei, ret);
2823
2824         VariantClear(&v);
2825         return hres;
2826     }
2827
2828
2829     if(V_VT(lval) == VT_DISPATCH && (V_VT(rval) == VT_BSTR || is_num_vt(V_VT(rval)))) {
2830         VARIANT v;
2831         HRESULT hres;
2832
2833         hres = to_primitive(ctx, lval, ei, &v, NO_HINT);
2834         if(FAILED(hres))
2835             return hres;
2836
2837         hres = equal_values(ctx, &v, rval, ei, ret);
2838
2839         VariantClear(&v);
2840         return hres;
2841     }
2842
2843
2844     *ret = FALSE;
2845     return S_OK;
2846 }
2847
2848 /* ECMA-262 3rd Edition    11.9.1 */
2849 HRESULT equal_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2850 {
2851     binary_expression_t *expr = (binary_expression_t*)_expr;
2852     VARIANT rval, lval;
2853     BOOL b;
2854     HRESULT hres;
2855
2856     TRACE("\n");
2857
2858     hres = get_binary_expr_values(ctx, expr, ei, &rval, &lval);
2859     if(FAILED(hres))
2860         return hres;
2861
2862     hres = equal_values(ctx, &rval, &lval, ei, &b);
2863     VariantClear(&lval);
2864     VariantClear(&rval);
2865     if(FAILED(hres))
2866         return hres;
2867
2868     return return_bool(ret, b);
2869 }
2870
2871 /* ECMA-262 3rd Edition    11.9.4 */
2872 static HRESULT interp_eq2(exec_ctx_t *ctx)
2873 {
2874     VARIANT *l, *r;
2875     BOOL b;
2876     HRESULT hres;
2877
2878     TRACE("\n");
2879
2880     r = stack_pop(ctx);
2881     l = stack_pop(ctx);
2882
2883     hres = equal2_values(r, l, &b);
2884     VariantClear(l);
2885     VariantClear(r);
2886     if(FAILED(hres))
2887         return hres;
2888
2889     return stack_push_bool(ctx, b);
2890 }
2891
2892 /* ECMA-262 3rd Edition    11.9.2 */
2893 HRESULT not_equal_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2894 {
2895     binary_expression_t *expr = (binary_expression_t*)_expr;
2896     VARIANT rval, lval;
2897     BOOL b;
2898     HRESULT hres;
2899
2900     TRACE("\n");
2901
2902     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2903     if(FAILED(hres))
2904         return hres;
2905
2906     hres = equal_values(ctx, &lval, &rval, ei, &b);
2907     VariantClear(&lval);
2908     VariantClear(&rval);
2909     if(FAILED(hres))
2910         return hres;
2911
2912     return return_bool(ret, !b);
2913 }
2914
2915 /* ECMA-262 3rd Edition    11.9.5 */
2916 static HRESULT interp_neq2(exec_ctx_t *ctx)
2917 {
2918     VARIANT *l, *r;
2919     BOOL b;
2920     HRESULT hres;
2921
2922     TRACE("\n");
2923
2924     r = stack_pop(ctx);
2925     l = stack_pop(ctx);
2926
2927     hres = equal2_values(r, l, &b);
2928     VariantClear(l);
2929     VariantClear(r);
2930     if(FAILED(hres))
2931         return hres;
2932
2933     return stack_push_bool(ctx, !b);
2934 }
2935
2936 /* ECMA-262 3rd Edition    11.8.5 */
2937 static HRESULT less_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, BOOL greater, jsexcept_t *ei, BOOL *ret)
2938 {
2939     VARIANT l, r, ln, rn;
2940     HRESULT hres;
2941
2942     hres = to_primitive(ctx, lval, ei, &l, NO_HINT);
2943     if(FAILED(hres))
2944         return hres;
2945
2946     hres = to_primitive(ctx, rval, ei, &r, NO_HINT);
2947     if(FAILED(hres)) {
2948         VariantClear(&l);
2949         return hres;
2950     }
2951
2952     if(V_VT(&l) == VT_BSTR && V_VT(&r) == VT_BSTR) {
2953         *ret = (strcmpW(V_BSTR(&l), V_BSTR(&r)) < 0) ^ greater;
2954         SysFreeString(V_BSTR(&l));
2955         SysFreeString(V_BSTR(&r));
2956         return S_OK;
2957     }
2958
2959     hres = to_number(ctx, &l, ei, &ln);
2960     VariantClear(&l);
2961     if(SUCCEEDED(hres))
2962         hres = to_number(ctx, &r, ei, &rn);
2963     VariantClear(&r);
2964     if(FAILED(hres))
2965         return hres;
2966
2967     if(V_VT(&ln) == VT_I4 && V_VT(&rn) == VT_I4) {
2968         *ret = (V_I4(&ln) < V_I4(&rn)) ^ greater;
2969     }else  {
2970         DOUBLE ld = num_val(&ln);
2971         DOUBLE rd = num_val(&rn);
2972
2973         *ret = !isnan(ld) && !isnan(rd) && ((ld < rd) ^ greater);
2974     }
2975
2976     return S_OK;
2977 }
2978
2979 /* ECMA-262 3rd Edition    11.8.1 */
2980 HRESULT less_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2981 {
2982     binary_expression_t *expr = (binary_expression_t*)_expr;
2983     VARIANT rval, lval;
2984     BOOL b;
2985     HRESULT hres;
2986
2987     TRACE("\n");
2988
2989     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2990     if(FAILED(hres))
2991         return hres;
2992
2993     hres = less_eval(ctx, &lval, &rval, FALSE, ei, &b);
2994     VariantClear(&lval);
2995     VariantClear(&rval);
2996     if(FAILED(hres))
2997         return hres;
2998
2999     return return_bool(ret, b);
3000 }
3001
3002 /* ECMA-262 3rd Edition    11.8.3 */
3003 HRESULT lesseq_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3004 {
3005     binary_expression_t *expr = (binary_expression_t*)_expr;
3006     VARIANT rval, lval;
3007     BOOL b;
3008     HRESULT hres;
3009
3010     TRACE("\n");
3011
3012     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
3013     if(FAILED(hres))
3014         return hres;
3015
3016     hres = less_eval(ctx, &rval, &lval, TRUE, ei, &b);
3017     VariantClear(&lval);
3018     VariantClear(&rval);
3019     if(FAILED(hres))
3020         return hres;
3021
3022     return return_bool(ret, b);
3023 }
3024
3025 /* ECMA-262 3rd Edition    11.8.2 */
3026 HRESULT greater_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3027 {
3028     binary_expression_t *expr = (binary_expression_t*)_expr;
3029     VARIANT rval, lval;
3030     BOOL b;
3031     HRESULT hres;
3032
3033     TRACE("\n");
3034
3035     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
3036     if(FAILED(hres))
3037         return hres;
3038
3039     hres = less_eval(ctx, &rval, &lval, FALSE, ei, &b);
3040     VariantClear(&lval);
3041     VariantClear(&rval);
3042     if(FAILED(hres))
3043         return hres;
3044
3045     return return_bool(ret, b);
3046 }
3047
3048 /* ECMA-262 3rd Edition    11.8.4 */
3049 HRESULT greatereq_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3050 {
3051     binary_expression_t *expr = (binary_expression_t*)_expr;
3052     VARIANT rval, lval;
3053     BOOL b;
3054     HRESULT hres;
3055
3056     TRACE("\n");
3057
3058     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
3059     if(FAILED(hres))
3060         return hres;
3061
3062     hres = less_eval(ctx, &lval, &rval, TRUE, ei, &b);
3063     VariantClear(&lval);
3064     VariantClear(&rval);
3065     if(FAILED(hres))
3066         return hres;
3067
3068     return return_bool(ret, b);
3069 }
3070
3071 /* ECMA-262 3rd Edition    11.4.8 */
3072 HRESULT interp_bneg(exec_ctx_t *ctx)
3073 {
3074     VARIANT *v, r;
3075     INT i;
3076     HRESULT hres;
3077
3078     TRACE("\n");
3079
3080     v = stack_pop(ctx);
3081     hres = to_int32(ctx->parser->script, v, &ctx->ei, &i);
3082     VariantClear(v);
3083     if(FAILED(hres))
3084         return hres;
3085
3086     V_VT(&r) = VT_I4;
3087     V_I4(&r) = ~i;
3088     return stack_push(ctx, &r);
3089 }
3090
3091 /* ECMA-262 3rd Edition    11.4.9 */
3092 HRESULT interp_neg(exec_ctx_t *ctx)
3093 {
3094     VARIANT *v;
3095     VARIANT_BOOL b;
3096     HRESULT hres;
3097
3098     TRACE("\n");
3099
3100     v = stack_pop(ctx);
3101     hres = to_boolean(v, &b);
3102     VariantClear(v);
3103     if(FAILED(hres))
3104         return hres;
3105
3106     return stack_push_bool(ctx, !b);
3107 }
3108
3109 /* ECMA-262 3rd Edition    11.7.1 */
3110 static HRESULT lshift_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3111 {
3112     DWORD ri;
3113     INT li;
3114     HRESULT hres;
3115
3116     hres = to_int32(ctx, lval, ei, &li);
3117     if(FAILED(hres))
3118         return hres;
3119
3120     hres = to_uint32(ctx, rval, ei, &ri);
3121     if(FAILED(hres))
3122         return hres;
3123
3124     V_VT(retv) = VT_I4;
3125     V_I4(retv) = li << (ri&0x1f);
3126     return S_OK;
3127 }
3128
3129 /* ECMA-262 3rd Edition    11.7.1 */
3130 HRESULT left_shift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3131 {
3132     binary_expression_t *expr = (binary_expression_t*)_expr;
3133
3134     TRACE("\n");
3135
3136     return binary_expr_eval(ctx, expr, lshift_eval, ei, ret);
3137 }
3138
3139 /* ECMA-262 3rd Edition    11.7.2 */
3140 static HRESULT rshift_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3141 {
3142     DWORD ri;
3143     INT li;
3144     HRESULT hres;
3145
3146     hres = to_int32(ctx, lval, ei, &li);
3147     if(FAILED(hres))
3148         return hres;
3149
3150     hres = to_uint32(ctx, rval, ei, &ri);
3151     if(FAILED(hres))
3152         return hres;
3153
3154     V_VT(retv) = VT_I4;
3155     V_I4(retv) = li >> (ri&0x1f);
3156     return S_OK;
3157 }
3158
3159 /* ECMA-262 3rd Edition    11.7.2 */
3160 HRESULT right_shift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3161 {
3162     binary_expression_t *expr = (binary_expression_t*)_expr;
3163
3164     TRACE("\n");
3165
3166     return binary_expr_eval(ctx, expr, rshift_eval, ei, ret);
3167 }
3168
3169 /* ECMA-262 3rd Edition    11.7.3 */
3170 static HRESULT rshift2_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3171 {
3172     DWORD li, ri;
3173     HRESULT hres;
3174
3175     hres = to_uint32(ctx, lval, ei, &li);
3176     if(FAILED(hres))
3177         return hres;
3178
3179     hres = to_uint32(ctx, rval, ei, &ri);
3180     if(FAILED(hres))
3181         return hres;
3182
3183     V_VT(retv) = VT_I4;
3184     V_I4(retv) = li >> (ri&0x1f);
3185     return S_OK;
3186 }
3187
3188 /* ECMA-262 3rd Edition    11.7.3 */
3189 HRESULT right2_shift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3190 {
3191     binary_expression_t *expr = (binary_expression_t*)_expr;
3192
3193     TRACE("\n");
3194
3195     return binary_expr_eval(ctx, expr, rshift2_eval, ei, ret);
3196 }
3197
3198 /* ECMA-262 3rd Edition    11.13.1 */
3199 HRESULT assign_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3200 {
3201     binary_expression_t *expr = (binary_expression_t*)_expr;
3202     exprval_t exprval, exprvalr;
3203     VARIANT rval;
3204     HRESULT hres;
3205
3206     TRACE("\n");
3207
3208     hres = expr_eval(ctx, expr->expression1, EXPR_NEWREF, ei, &exprval);
3209     if(FAILED(hres))
3210         return hres;
3211
3212     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprvalr);
3213     if(SUCCEEDED(hres)) {
3214         hres = exprval_to_value(ctx, &exprvalr, ei, &rval);
3215         exprval_release(&exprvalr);
3216     }
3217
3218     if(SUCCEEDED(hres)) {
3219         hres = put_value(ctx, &exprval, &rval, ei);
3220         if(FAILED(hres))
3221             VariantClear(&rval);
3222     }
3223
3224     exprval_release(&exprval);
3225     if(FAILED(hres))
3226         return hres;
3227
3228     ret->type = EXPRVAL_VARIANT;
3229     ret->u.var = rval;
3230     return S_OK;
3231 }
3232
3233 /* ECMA-262 3rd Edition    11.13.2 */
3234 HRESULT assign_lshift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3235 {
3236     binary_expression_t *expr = (binary_expression_t*)_expr;
3237
3238     TRACE("\n");
3239
3240     return assign_oper_eval(ctx, expr->expression1, expr->expression2, lshift_eval, ei, ret);
3241 }
3242
3243 /* ECMA-262 3rd Edition    11.13.2 */
3244 HRESULT assign_rshift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3245 {
3246     binary_expression_t *expr = (binary_expression_t*)_expr;
3247
3248     TRACE("\n");
3249
3250     return assign_oper_eval(ctx, expr->expression1, expr->expression2, rshift_eval, ei, ret);
3251 }
3252
3253 /* ECMA-262 3rd Edition    11.13.2 */
3254 HRESULT assign_rrshift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3255 {
3256     binary_expression_t *expr = (binary_expression_t*)_expr;
3257
3258     TRACE("\n");
3259
3260     return assign_oper_eval(ctx, expr->expression1, expr->expression2, rshift2_eval, ei, ret);
3261 }
3262
3263 /* ECMA-262 3rd Edition    11.13.2 */
3264 HRESULT assign_add_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3265 {
3266     binary_expression_t *expr = (binary_expression_t*)_expr;
3267
3268     TRACE("\n");
3269
3270     return assign_oper_eval(ctx, expr->expression1, expr->expression2, add_eval, ei, ret);
3271 }
3272
3273 /* ECMA-262 3rd Edition    11.13.2 */
3274 HRESULT assign_sub_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3275 {
3276     binary_expression_t *expr = (binary_expression_t*)_expr;
3277
3278     TRACE("\n");
3279
3280     return assign_oper_eval(ctx, expr->expression1, expr->expression2, sub_eval, ei, ret);
3281 }
3282
3283 /* ECMA-262 3rd Edition    11.13.2 */
3284 HRESULT assign_mul_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3285 {
3286     binary_expression_t *expr = (binary_expression_t*)_expr;
3287
3288     TRACE("\n");
3289
3290     return assign_oper_eval(ctx, expr->expression1, expr->expression2, mul_eval, ei, ret);
3291 }
3292
3293 /* ECMA-262 3rd Edition    11.13.2 */
3294 HRESULT assign_div_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3295 {
3296     binary_expression_t *expr = (binary_expression_t*)_expr;
3297
3298     TRACE("\n");
3299
3300     return assign_oper_eval(ctx, expr->expression1, expr->expression2, div_eval, ei, ret);
3301 }
3302
3303 /* ECMA-262 3rd Edition    11.13.2 */
3304 HRESULT assign_mod_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3305 {
3306     binary_expression_t *expr = (binary_expression_t*)_expr;
3307
3308     TRACE("\n");
3309
3310     return assign_oper_eval(ctx, expr->expression1, expr->expression2, mod_eval, ei, ret);
3311 }
3312
3313 /* ECMA-262 3rd Edition    11.13.2 */
3314 HRESULT assign_and_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3315 {
3316     binary_expression_t *expr = (binary_expression_t*)_expr;
3317
3318     TRACE("\n");
3319
3320     return assign_oper_eval(ctx, expr->expression1, expr->expression2, bitand_eval, ei, ret);
3321 }
3322
3323 /* ECMA-262 3rd Edition    11.13.2 */
3324 HRESULT assign_or_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3325 {
3326     binary_expression_t *expr = (binary_expression_t*)_expr;
3327
3328     TRACE("\n");
3329
3330     return assign_oper_eval(ctx, expr->expression1, expr->expression2, bitor_eval, ei, ret);
3331 }
3332
3333 /* ECMA-262 3rd Edition    11.13.2 */
3334 HRESULT assign_xor_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3335 {
3336     binary_expression_t *expr = (binary_expression_t*)_expr;
3337
3338     TRACE("\n");
3339
3340     return assign_oper_eval(ctx, expr->expression1, expr->expression2, xor_eval, ei, ret);
3341 }
3342
3343 static HRESULT interp_ret(exec_ctx_t *ctx)
3344 {
3345     TRACE("\n");
3346
3347     ctx->ip = -1;
3348     return S_OK;
3349 }
3350
3351 static HRESULT interp_tree(exec_ctx_t *ctx)
3352 {
3353     instr_t *instr = ctx->parser->code->instrs+ctx->ip;
3354     exprval_t val;
3355     VARIANT v;
3356     HRESULT hres;
3357
3358     TRACE("\n");
3359
3360     hres = expr_eval(ctx->parser->script, instr->arg1.expr, 0, &ctx->ei, &val);
3361     if(FAILED(hres))
3362         return hres;
3363
3364     hres = exprval_to_value(ctx->parser->script, &val, &ctx->ei, &v);
3365     if(FAILED(hres))
3366         return hres;
3367
3368     return stack_push(ctx, &v);
3369 }
3370
3371 typedef HRESULT (*op_func_t)(exec_ctx_t*);
3372
3373 static const op_func_t op_funcs[] = {
3374 #define X(x,a,b,c) interp_##x,
3375 OP_LIST
3376 #undef X
3377 };
3378
3379 static const unsigned op_move[] = {
3380 #define X(a,x,b,c) x,
3381 OP_LIST
3382 #undef X
3383 };
3384
3385 HRESULT interp_expression_eval(script_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3386 {
3387     exec_ctx_t *exec_ctx = ctx->exec_ctx;
3388     unsigned prev_ip, prev_top;
3389     jsop_t op;
3390     HRESULT hres = S_OK;
3391
3392     TRACE("\n");
3393
3394     prev_top = exec_ctx->top;
3395     prev_ip = exec_ctx->ip;
3396     exec_ctx->ip = expr->instr_off;
3397
3398     while(exec_ctx->ip != -1) {
3399         op = exec_ctx->parser->code->instrs[exec_ctx->ip].op;
3400         hres = op_funcs[op](exec_ctx);
3401         if(FAILED(hres))
3402             break;
3403         exec_ctx->ip += op_move[op];
3404     }
3405
3406     exec_ctx->ip = prev_ip;
3407
3408     if(FAILED(hres)) {
3409         stack_popn(exec_ctx, exec_ctx->top-prev_top);
3410         *ei = exec_ctx->ei;
3411         memset(&exec_ctx->ei, 0, sizeof(exec_ctx->ei));
3412         return hres;
3413     }
3414
3415     assert(exec_ctx->top == prev_top+1);
3416
3417     ret->type = EXPRVAL_VARIANT;
3418     ret->u.var = *stack_pop(exec_ctx);
3419     return S_OK;
3420 }
3421
3422 HRESULT compiled_expression_eval(script_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3423 {
3424     HRESULT hres;
3425
3426     TRACE("\n");
3427
3428     hres = compile_subscript(ctx->exec_ctx->parser, expr, &expr->instr_off);
3429     if(FAILED(hres))
3430         return hres;
3431
3432     return (expr->eval = interp_expression_eval)(ctx, expr, flags, ei, ret);
3433 }