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 this_expression_eval(script_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1698 {
1699     TRACE("\n");
1700
1701     ret->type = EXPRVAL_VARIANT;
1702     V_VT(&ret->u.var) = VT_DISPATCH;
1703     V_DISPATCH(&ret->u.var) = ctx->exec_ctx->this_obj;
1704     IDispatch_AddRef(ctx->exec_ctx->this_obj);
1705     return S_OK;
1706 }
1707
1708 /* ECMA-262 3rd Edition    10.1.4 */
1709 HRESULT identifier_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1710 {
1711     identifier_expression_t *expr = (identifier_expression_t*)_expr;
1712     BSTR identifier;
1713     HRESULT hres;
1714
1715     TRACE("\n");
1716
1717     identifier = SysAllocString(expr->identifier);
1718     if(!identifier)
1719         return E_OUTOFMEMORY;
1720
1721     hres = identifier_eval(ctx, identifier, flags, ei, ret);
1722
1723     SysFreeString(identifier);
1724     return hres;
1725 }
1726
1727 /* ECMA-262 3rd Edition    7.8.2 */
1728 HRESULT interp_bool(exec_ctx_t *ctx)
1729 {
1730     const LONG arg = ctx->parser->code->instrs[ctx->ip].arg1.lng;
1731
1732     TRACE("%s\n", arg ? "true" : "false");
1733
1734     return stack_push_bool(ctx, arg);
1735 }
1736
1737 /* ECMA-262 3rd Edition    7.8.3 */
1738 HRESULT interp_int(exec_ctx_t *ctx)
1739 {
1740     const LONG arg = ctx->parser->code->instrs[ctx->ip].arg1.lng;
1741     VARIANT v;
1742
1743     TRACE("%d\n", arg);
1744
1745     V_VT(&v) = VT_I4;
1746     V_I4(&v) = arg;
1747     return stack_push(ctx, &v);
1748 }
1749
1750 /* ECMA-262 3rd Edition    7.8 */
1751 HRESULT literal_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1752 {
1753     literal_expression_t *expr = (literal_expression_t*)_expr;
1754     VARIANT var;
1755     HRESULT hres;
1756
1757     TRACE("\n");
1758
1759     hres = literal_to_var(ctx, expr->literal, &var);
1760     if(FAILED(hres))
1761         return hres;
1762
1763     ret->type = EXPRVAL_VARIANT;
1764     ret->u.var = var;
1765     return S_OK;
1766 }
1767
1768 /* ECMA-262 3rd Edition    11.1.4 */
1769 HRESULT array_literal_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1770 {
1771     array_literal_expression_t *expr = (array_literal_expression_t*)_expr;
1772     DWORD length = 0, i = 0;
1773     array_element_t *elem;
1774     jsdisp_t *array;
1775     exprval_t exprval;
1776     VARIANT val;
1777     HRESULT hres;
1778
1779     TRACE("\n");
1780
1781     for(elem = expr->element_list; elem; elem = elem->next)
1782         length += elem->elision+1;
1783     length += expr->length;
1784
1785     hres = create_array(ctx, length, &array);
1786     if(FAILED(hres))
1787         return hres;
1788
1789     for(elem = expr->element_list; elem; elem = elem->next) {
1790         i += elem->elision;
1791
1792         hres = expr_eval(ctx, elem->expr, 0, ei, &exprval);
1793         if(FAILED(hres))
1794             break;
1795
1796         hres = exprval_to_value(ctx, &exprval, ei, &val);
1797         exprval_release(&exprval);
1798         if(FAILED(hres))
1799             break;
1800
1801         hres = jsdisp_propput_idx(array, i, &val, ei, NULL/*FIXME*/);
1802         VariantClear(&val);
1803         if(FAILED(hres))
1804             break;
1805
1806         i++;
1807     }
1808
1809     if(FAILED(hres)) {
1810         jsdisp_release(array);
1811         return hres;
1812     }
1813
1814     ret->type = EXPRVAL_VARIANT;
1815     var_set_jsdisp(&ret->u.var, array);
1816     return S_OK;
1817 }
1818
1819 /* ECMA-262 3rd Edition    11.1.5 */
1820 HRESULT property_value_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1821 {
1822     property_value_expression_t *expr = (property_value_expression_t*)_expr;
1823     VARIANT val, tmp;
1824     jsdisp_t *obj;
1825     prop_val_t *iter;
1826     exprval_t exprval;
1827     BSTR name;
1828     HRESULT hres;
1829
1830     TRACE("\n");
1831
1832     hres = create_object(ctx, NULL, &obj);
1833     if(FAILED(hres))
1834         return hres;
1835
1836     for(iter = expr->property_list; iter; iter = iter->next) {
1837         hres = literal_to_var(ctx, iter->name, &tmp);
1838         if(FAILED(hres))
1839             break;
1840
1841         hres = to_string(ctx, &tmp, ei, &name);
1842         VariantClear(&tmp);
1843         if(FAILED(hres))
1844             break;
1845
1846         hres = expr_eval(ctx, iter->value, 0, ei, &exprval);
1847         if(SUCCEEDED(hres)) {
1848             hres = exprval_to_value(ctx, &exprval, ei, &val);
1849             exprval_release(&exprval);
1850             if(SUCCEEDED(hres)) {
1851                 hres = jsdisp_propput_name(obj, name, &val, ei, NULL/*FIXME*/);
1852                 VariantClear(&val);
1853             }
1854         }
1855
1856         SysFreeString(name);
1857         if(FAILED(hres))
1858             break;
1859     }
1860
1861     if(FAILED(hres)) {
1862         jsdisp_release(obj);
1863         return hres;
1864     }
1865
1866     ret->type = EXPRVAL_VARIANT;
1867     var_set_jsdisp(&ret->u.var, obj);
1868     return S_OK;
1869 }
1870
1871 /* ECMA-262 3rd Edition    11.14 */
1872 HRESULT comma_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1873 {
1874     binary_expression_t *expr = (binary_expression_t*)_expr;
1875     VARIANT lval, rval;
1876     HRESULT hres;
1877
1878     TRACE("\n");
1879
1880     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
1881     if(FAILED(hres))
1882         return hres;
1883
1884     VariantClear(&lval);
1885
1886     ret->type = EXPRVAL_VARIANT;
1887     ret->u.var = rval;
1888     return S_OK;
1889 }
1890
1891 /* ECMA-262 3rd Edition    11.11 */
1892 HRESULT logical_or_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1893 {
1894     binary_expression_t *expr = (binary_expression_t*)_expr;
1895     exprval_t exprval;
1896     VARIANT_BOOL b;
1897     VARIANT val;
1898     HRESULT hres;
1899
1900     TRACE("\n");
1901
1902     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1903     if(FAILED(hres))
1904         return hres;
1905
1906     hres = exprval_to_value(ctx, &exprval, ei, &val);
1907     exprval_release(&exprval);
1908     if(FAILED(hres))
1909         return hres;
1910
1911     hres = to_boolean(&val, &b);
1912     if(SUCCEEDED(hres) && b) {
1913         ret->type = EXPRVAL_VARIANT;
1914         ret->u.var = val;
1915         return S_OK;
1916     }
1917
1918     VariantClear(&val);
1919     if(FAILED(hres))
1920         return hres;
1921
1922     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
1923     if(FAILED(hres))
1924         return hres;
1925
1926     hres = exprval_to_value(ctx, &exprval, ei, &val);
1927     exprval_release(&exprval);
1928     if(FAILED(hres))
1929         return hres;
1930
1931     ret->type = EXPRVAL_VARIANT;
1932     ret->u.var = val;
1933     return S_OK;
1934 }
1935
1936 /* ECMA-262 3rd Edition    11.11 */
1937 HRESULT logical_and_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
1938 {
1939     binary_expression_t *expr = (binary_expression_t*)_expr;
1940     exprval_t exprval;
1941     VARIANT_BOOL b;
1942     VARIANT val;
1943     HRESULT hres;
1944
1945     TRACE("\n");
1946
1947     hres = expr_eval(ctx, expr->expression1, 0, ei, &exprval);
1948     if(FAILED(hres))
1949         return hres;
1950
1951     hres = exprval_to_value(ctx, &exprval, ei, &val);
1952     exprval_release(&exprval);
1953     if(FAILED(hres))
1954         return hres;
1955
1956     hres = to_boolean(&val, &b);
1957     if(SUCCEEDED(hres) && !b) {
1958         ret->type = EXPRVAL_VARIANT;
1959         ret->u.var = val;
1960         return S_OK;
1961     }
1962
1963     VariantClear(&val);
1964     if(FAILED(hres))
1965         return hres;
1966
1967     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprval);
1968     if(FAILED(hres))
1969         return hres;
1970
1971     hres = exprval_to_value(ctx, &exprval, ei, &val);
1972     exprval_release(&exprval);
1973     if(FAILED(hres))
1974         return hres;
1975
1976     ret->type = EXPRVAL_VARIANT;
1977     ret->u.var = val;
1978     return S_OK;
1979 }
1980
1981 /* ECMA-262 3rd Edition    11.10 */
1982 static HRESULT bitor_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
1983 {
1984     INT li, ri;
1985     HRESULT hres;
1986
1987     hres = to_int32(ctx, lval, ei, &li);
1988     if(FAILED(hres))
1989         return hres;
1990
1991     hres = to_int32(ctx, rval, ei, &ri);
1992     if(FAILED(hres))
1993         return hres;
1994
1995     V_VT(retv) = VT_I4;
1996     V_I4(retv) = li|ri;
1997     return S_OK;
1998 }
1999
2000 /* ECMA-262 3rd Edition    11.10 */
2001 HRESULT binary_or_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2002 {
2003     binary_expression_t *expr = (binary_expression_t*)_expr;
2004
2005     TRACE("\n");
2006
2007     return binary_expr_eval(ctx, expr, bitor_eval, ei, ret);
2008 }
2009
2010 /* ECMA-262 3rd Edition    11.10 */
2011 static HRESULT xor_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2012 {
2013     INT li, ri;
2014     HRESULT hres;
2015
2016     hres = to_int32(ctx, lval, ei, &li);
2017     if(FAILED(hres))
2018         return hres;
2019
2020     hres = to_int32(ctx, rval, ei, &ri);
2021     if(FAILED(hres))
2022         return hres;
2023
2024     V_VT(retv) = VT_I4;
2025     V_I4(retv) = li^ri;
2026     return S_OK;
2027 }
2028
2029 /* ECMA-262 3rd Edition    11.10 */
2030 HRESULT binary_xor_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2031 {
2032     binary_expression_t *expr = (binary_expression_t*)_expr;
2033
2034     TRACE("\n");
2035
2036     return binary_expr_eval(ctx, expr, xor_eval, ei, ret);
2037 }
2038
2039 /* ECMA-262 3rd Edition    11.10 */
2040 static HRESULT bitand_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2041 {
2042     INT li, ri;
2043     HRESULT hres;
2044
2045     hres = to_int32(ctx, lval, ei, &li);
2046     if(FAILED(hres))
2047         return hres;
2048
2049     hres = to_int32(ctx, rval, ei, &ri);
2050     if(FAILED(hres))
2051         return hres;
2052
2053     V_VT(retv) = VT_I4;
2054     V_I4(retv) = li&ri;
2055     return S_OK;
2056 }
2057
2058 /* ECMA-262 3rd Edition    11.10 */
2059 HRESULT binary_and_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2060 {
2061     binary_expression_t *expr = (binary_expression_t*)_expr;
2062
2063     TRACE("\n");
2064
2065     return binary_expr_eval(ctx, expr, bitand_eval, ei, ret);
2066 }
2067
2068 /* ECMA-262 3rd Edition    11.8.6 */
2069 static HRESULT instanceof_eval(script_ctx_t *ctx, VARIANT *inst, VARIANT *objv, jsexcept_t *ei, VARIANT *retv)
2070 {
2071     jsdisp_t *obj, *iter, *tmp = NULL;
2072     VARIANT_BOOL ret = VARIANT_FALSE;
2073     BOOL b;
2074     VARIANT var;
2075     HRESULT hres;
2076
2077     static const WCHAR prototypeW[] = {'p','r','o','t','o','t', 'y', 'p','e',0};
2078
2079     if(V_VT(objv) != VT_DISPATCH || !V_DISPATCH(objv))
2080         return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
2081
2082     obj = iface_to_jsdisp((IUnknown*)V_DISPATCH(objv));
2083     if(!obj) {
2084         FIXME("non-jsdisp objects not supported\n");
2085         return E_FAIL;
2086     }
2087
2088     if(is_class(obj, JSCLASS_FUNCTION)) {
2089         hres = jsdisp_propget_name(obj, prototypeW, &var, ei, NULL/*FIXME*/);
2090     }else {
2091         hres = throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
2092     }
2093     jsdisp_release(obj);
2094     if(FAILED(hres))
2095         return hres;
2096
2097     if(V_VT(&var) == VT_DISPATCH) {
2098         if(V_VT(inst) == VT_DISPATCH)
2099             tmp = iface_to_jsdisp((IUnknown*)V_DISPATCH(inst));
2100         for(iter = tmp; iter; iter = iter->prototype) {
2101             hres = disp_cmp(V_DISPATCH(&var), to_disp(iter), &b);
2102             if(FAILED(hres))
2103                 break;
2104             if(b) {
2105                 ret = VARIANT_TRUE;
2106                 break;
2107             }
2108         }
2109
2110         if(tmp)
2111             jsdisp_release(tmp);
2112     }else {
2113         FIXME("prototype is not an object\n");
2114         hres = E_FAIL;
2115     }
2116
2117     VariantClear(&var);
2118     if(FAILED(hres))
2119         return hres;
2120
2121     V_VT(retv) = VT_BOOL;
2122     V_BOOL(retv) = ret;
2123     return S_OK;
2124 }
2125
2126 /* ECMA-262 3rd Edition    11.8.6 */
2127 HRESULT instanceof_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2128 {
2129     binary_expression_t *expr = (binary_expression_t*)_expr;
2130
2131     TRACE("\n");
2132
2133     return binary_expr_eval(ctx, expr, instanceof_eval, ei, ret);
2134 }
2135
2136 /* ECMA-262 3rd Edition    11.8.7 */
2137 HRESULT interp_in(exec_ctx_t *ctx)
2138 {
2139     VARIANT *obj, *v;
2140     DISPID id = 0;
2141     BOOL ret;
2142     BSTR str;
2143     HRESULT hres;
2144
2145     TRACE("\n");
2146
2147     obj = stack_pop(ctx);
2148     v = stack_pop(ctx);
2149
2150     if(V_VT(obj) != VT_DISPATCH || !V_DISPATCH(obj)) {
2151         VariantClear(obj);
2152         VariantClear(v);
2153         return throw_type_error(ctx->parser->script, &ctx->ei, JS_E_OBJECT_EXPECTED, NULL);
2154     }
2155
2156     hres = to_string(ctx->parser->script, v, &ctx->ei, &str);
2157     VariantClear(v);
2158     if(FAILED(hres)) {
2159         IDispatch_Release(V_DISPATCH(obj));
2160         return hres;
2161     }
2162
2163     hres = disp_get_id(ctx->parser->script, V_DISPATCH(obj), str, 0, &id);
2164     IDispatch_Release(V_DISPATCH(obj));
2165     SysFreeString(str);
2166     if(SUCCEEDED(hres))
2167         ret = TRUE;
2168     else if(hres == DISP_E_UNKNOWNNAME)
2169         ret = FALSE;
2170     else
2171         return hres;
2172
2173     return stack_push_bool(ctx, ret);
2174 }
2175
2176 /* ECMA-262 3rd Edition    11.6.1 */
2177 static HRESULT add_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2178 {
2179     VARIANT r, l;
2180     HRESULT hres;
2181
2182     hres = to_primitive(ctx, lval, ei, &l, NO_HINT);
2183     if(FAILED(hres))
2184         return hres;
2185
2186     hres = to_primitive(ctx, rval, ei, &r, NO_HINT);
2187     if(FAILED(hres)) {
2188         VariantClear(&l);
2189         return hres;
2190     }
2191
2192     if(V_VT(&l) == VT_BSTR || V_VT(&r) == VT_BSTR) {
2193         BSTR lstr = NULL, rstr = NULL;
2194
2195         if(V_VT(&l) == VT_BSTR)
2196             lstr = V_BSTR(&l);
2197         else
2198             hres = to_string(ctx, &l, ei, &lstr);
2199
2200         if(SUCCEEDED(hres)) {
2201             if(V_VT(&r) == VT_BSTR)
2202                 rstr = V_BSTR(&r);
2203             else
2204                 hres = to_string(ctx, &r, ei, &rstr);
2205         }
2206
2207         if(SUCCEEDED(hres)) {
2208             int len1, len2;
2209
2210             len1 = SysStringLen(lstr);
2211             len2 = SysStringLen(rstr);
2212
2213             V_VT(retv) = VT_BSTR;
2214             V_BSTR(retv) = SysAllocStringLen(NULL, len1+len2);
2215             memcpy(V_BSTR(retv), lstr, len1*sizeof(WCHAR));
2216             memcpy(V_BSTR(retv)+len1, rstr, (len2+1)*sizeof(WCHAR));
2217         }
2218
2219         if(V_VT(&l) != VT_BSTR)
2220             SysFreeString(lstr);
2221         if(V_VT(&r) != VT_BSTR)
2222             SysFreeString(rstr);
2223     }else {
2224         VARIANT nl, nr;
2225
2226         hres = to_number(ctx, &l, ei, &nl);
2227         if(SUCCEEDED(hres)) {
2228             hres = to_number(ctx, &r, ei, &nr);
2229             if(SUCCEEDED(hres))
2230                 num_set_val(retv, num_val(&nl) + num_val(&nr));
2231         }
2232     }
2233
2234     VariantClear(&r);
2235     VariantClear(&l);
2236     return hres;
2237 }
2238
2239 /* ECMA-262 3rd Edition    11.6.1 */
2240 HRESULT interp_add(exec_ctx_t *ctx)
2241 {
2242     VARIANT *l, *r, ret;
2243     HRESULT hres;
2244
2245     r = stack_pop(ctx);
2246     l = stack_pop(ctx);
2247
2248     TRACE("%s + %s\n", debugstr_variant(l), debugstr_variant(r));
2249
2250     hres = add_eval(ctx->parser->script, l, r, &ctx->ei, &ret);
2251     if(FAILED(hres))
2252         return hres;
2253
2254     return stack_push(ctx, &ret);
2255 }
2256
2257 /* ECMA-262 3rd Edition    11.6.2 */
2258 static HRESULT sub_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2259 {
2260     VARIANT lnum, rnum;
2261     HRESULT hres;
2262
2263     hres = to_number(ctx, lval, ei, &lnum);
2264     if(FAILED(hres))
2265         return hres;
2266
2267     hres = to_number(ctx, rval, ei, &rnum);
2268     if(FAILED(hres))
2269         return hres;
2270
2271     num_set_val(retv, num_val(&lnum) - num_val(&rnum));
2272     return S_OK;
2273 }
2274
2275 /* ECMA-262 3rd Edition    11.6.2 */
2276 HRESULT sub_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2277 {
2278     binary_expression_t *expr = (binary_expression_t*)_expr;
2279
2280     TRACE("\n");
2281
2282     return binary_expr_eval(ctx, expr, sub_eval, ei, ret);
2283 }
2284
2285 /* ECMA-262 3rd Edition    11.5.1 */
2286 static HRESULT mul_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2287 {
2288     VARIANT lnum, rnum;
2289     HRESULT hres;
2290
2291     hres = to_number(ctx, lval, ei, &lnum);
2292     if(FAILED(hres))
2293         return hres;
2294
2295     hres = to_number(ctx, rval, ei, &rnum);
2296     if(FAILED(hres))
2297         return hres;
2298
2299     num_set_val(retv, num_val(&lnum) * num_val(&rnum));
2300     return S_OK;
2301 }
2302
2303 /* ECMA-262 3rd Edition    11.5.1 */
2304 HRESULT mul_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2305 {
2306     binary_expression_t *expr = (binary_expression_t*)_expr;
2307
2308     TRACE("\n");
2309
2310     return binary_expr_eval(ctx, expr, mul_eval, ei, ret);
2311 }
2312
2313 /* ECMA-262 3rd Edition    11.5.2 */
2314 static HRESULT div_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2315 {
2316     VARIANT lnum, rnum;
2317     HRESULT hres;
2318
2319     hres = to_number(ctx, lval, ei, &lnum);
2320     if(FAILED(hres))
2321         return hres;
2322
2323     hres = to_number(ctx, rval, ei, &rnum);
2324     if(FAILED(hres))
2325         return hres;
2326
2327     num_set_val(retv, num_val(&lnum) / num_val(&rnum));
2328     return S_OK;
2329 }
2330
2331 /* ECMA-262 3rd Edition    11.5.2 */
2332 HRESULT div_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2333 {
2334     binary_expression_t *expr = (binary_expression_t*)_expr;
2335
2336     TRACE("\n");
2337
2338     return binary_expr_eval(ctx, expr, div_eval, ei, ret);
2339 }
2340
2341 /* ECMA-262 3rd Edition    11.5.3 */
2342 static HRESULT mod_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
2343 {
2344     VARIANT lnum, rnum;
2345     HRESULT hres;
2346
2347     hres = to_number(ctx, lval, ei, &lnum);
2348     if(FAILED(hres))
2349         return hres;
2350
2351     hres = to_number(ctx, rval, ei, &rnum);
2352     if(FAILED(hres))
2353         return hres;
2354
2355     num_set_val(retv, fmod(num_val(&lnum), num_val(&rnum)));
2356     return S_OK;
2357 }
2358
2359 /* ECMA-262 3rd Edition    11.5.3 */
2360 HRESULT mod_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2361 {
2362     binary_expression_t *expr = (binary_expression_t*)_expr;
2363
2364     TRACE("\n");
2365
2366     return binary_expr_eval(ctx, expr, mod_eval, ei, ret);
2367 }
2368
2369 /* ECMA-262 3rd Edition    11.4.2 */
2370 HRESULT delete_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2371 {
2372     unary_expression_t *expr = (unary_expression_t*)_expr;
2373     VARIANT_BOOL b = VARIANT_FALSE;
2374     exprval_t exprval;
2375     HRESULT hres;
2376
2377     TRACE("\n");
2378
2379     hres = expr_eval(ctx, expr->expression, EXPR_STRREF, ei, &exprval);
2380     if(FAILED(hres))
2381         return hres;
2382
2383     switch(exprval.type) {
2384     case EXPRVAL_IDREF: {
2385         IDispatchEx *dispex;
2386
2387         hres = IDispatch_QueryInterface(exprval.u.nameref.disp, &IID_IDispatchEx, (void**)&dispex);
2388         if(SUCCEEDED(hres)) {
2389             hres = IDispatchEx_DeleteMemberByDispID(dispex, exprval.u.idref.id);
2390             b = VARIANT_TRUE;
2391             IDispatchEx_Release(dispex);
2392         }
2393         break;
2394     }
2395     case EXPRVAL_NAMEREF: {
2396         IDispatchEx *dispex;
2397
2398         hres = IDispatch_QueryInterface(exprval.u.nameref.disp, &IID_IDispatchEx, (void**)&dispex);
2399         if(SUCCEEDED(hres)) {
2400             hres = IDispatchEx_DeleteMemberByName(dispex, exprval.u.nameref.name,
2401                     make_grfdex(ctx, fdexNameCaseSensitive));
2402             b = VARIANT_TRUE;
2403             IDispatchEx_Release(dispex);
2404         }
2405         break;
2406     }
2407     default:
2408         FIXME("unsupported type %d\n", exprval.type);
2409         hres = E_NOTIMPL;
2410     }
2411
2412     exprval_release(&exprval);
2413     if(FAILED(hres))
2414         return hres;
2415
2416     return return_bool(ret, b);
2417 }
2418
2419 /* ECMA-262 3rd Edition    11.4.2 */
2420 HRESULT void_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2421 {
2422     unary_expression_t *expr = (unary_expression_t*)_expr;
2423     exprval_t exprval;
2424     VARIANT tmp;
2425     HRESULT hres;
2426
2427     TRACE("\n");
2428
2429     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2430     if(FAILED(hres))
2431         return hres;
2432
2433     hres = exprval_to_value(ctx, &exprval, ei, &tmp);
2434     exprval_release(&exprval);
2435     if(FAILED(hres))
2436         return hres;
2437
2438     VariantClear(&tmp);
2439
2440     ret->type = EXPRVAL_VARIANT;
2441     V_VT(&ret->u.var) = VT_EMPTY;
2442     return S_OK;
2443 }
2444
2445 /* ECMA-262 3rd Edition    11.4.3 */
2446 static HRESULT typeof_exprval(script_ctx_t *ctx, exprval_t *exprval, jsexcept_t *ei, const WCHAR **ret)
2447 {
2448     VARIANT val;
2449     HRESULT hres;
2450
2451     static const WCHAR booleanW[] = {'b','o','o','l','e','a','n',0};
2452     static const WCHAR functionW[] = {'f','u','n','c','t','i','o','n',0};
2453     static const WCHAR numberW[] = {'n','u','m','b','e','r',0};
2454     static const WCHAR objectW[] = {'o','b','j','e','c','t',0};
2455     static const WCHAR stringW[] = {'s','t','r','i','n','g',0};
2456     static const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
2457     static const WCHAR unknownW[] = {'u','n','k','n','o','w','n',0};
2458
2459     if(exprval->type == EXPRVAL_INVALID) {
2460         *ret = undefinedW;
2461         return S_OK;
2462     }
2463
2464     hres = exprval_to_value(ctx, exprval, ei, &val);
2465     if(FAILED(hres)) {
2466         if(exprval->type == EXPRVAL_IDREF) {
2467             *ret = unknownW;
2468             return S_OK;
2469         }
2470         return hres;
2471     }
2472
2473     switch(V_VT(&val)) {
2474     case VT_EMPTY:
2475         *ret = undefinedW;
2476         break;
2477     case VT_NULL:
2478         *ret = objectW;
2479         break;
2480     case VT_BOOL:
2481         *ret = booleanW;
2482         break;
2483     case VT_I4:
2484     case VT_R8:
2485         *ret = numberW;
2486         break;
2487     case VT_BSTR:
2488         *ret = stringW;
2489         break;
2490     case VT_DISPATCH: {
2491         jsdisp_t *dispex;
2492
2493         if(V_DISPATCH(&val) && (dispex = iface_to_jsdisp((IUnknown*)V_DISPATCH(&val)))) {
2494             *ret = is_class(dispex, JSCLASS_FUNCTION) ? functionW : objectW;
2495             jsdisp_release(dispex);
2496         }else {
2497             *ret = objectW;
2498         }
2499         break;
2500     }
2501     default:
2502         FIXME("unhandled vt %d\n", V_VT(&val));
2503         hres = E_NOTIMPL;
2504     }
2505
2506     VariantClear(&val);
2507     return hres;
2508 }
2509
2510 HRESULT typeof_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2511 {
2512     unary_expression_t *expr = (unary_expression_t*)_expr;
2513     const WCHAR *str = NULL;
2514     exprval_t exprval;
2515     HRESULT hres;
2516
2517     TRACE("\n");
2518
2519     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2520     if(FAILED(hres))
2521         return hres;
2522
2523     hres = typeof_exprval(ctx, &exprval, ei, &str);
2524     exprval_release(&exprval);
2525     if(FAILED(hres))
2526         return hres;
2527
2528     ret->type = EXPRVAL_VARIANT;
2529     V_VT(&ret->u.var) = VT_BSTR;
2530     V_BSTR(&ret->u.var) = SysAllocString(str);
2531     if(!V_BSTR(&ret->u.var))
2532         return E_OUTOFMEMORY;
2533
2534     return S_OK;
2535 }
2536
2537 /* ECMA-262 3rd Edition    11.4.7 */
2538 HRESULT minus_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2539 {
2540     unary_expression_t *expr = (unary_expression_t*)_expr;
2541     exprval_t exprval;
2542     VARIANT val, num;
2543     HRESULT hres;
2544
2545     TRACE("\n");
2546
2547     hres = expr_eval(ctx, expr->expression, 0, ei, &exprval);
2548     if(FAILED(hres))
2549         return hres;
2550
2551     hres = exprval_to_value(ctx, &exprval, ei, &val);
2552     exprval_release(&exprval);
2553     if(FAILED(hres))
2554         return hres;
2555
2556     hres = to_number(ctx, &val, ei, &num);
2557     VariantClear(&val);
2558     if(FAILED(hres))
2559         return hres;
2560
2561     ret->type = EXPRVAL_VARIANT;
2562     num_set_val(&ret->u.var, -num_val(&num));
2563     return S_OK;
2564 }
2565
2566 /* ECMA-262 3rd Edition    11.4.6 */
2567 HRESULT interp_tonum(exec_ctx_t *ctx)
2568 {
2569     VARIANT *v, num;
2570     HRESULT hres;
2571
2572     TRACE("\n");
2573
2574     v = stack_pop(ctx);
2575     hres = to_number(ctx->parser->script, v, &ctx->ei, &num);
2576     VariantClear(v);
2577     if(FAILED(hres))
2578         return hres;
2579
2580     return stack_push(ctx, &num);
2581 }
2582
2583 /* ECMA-262 3rd Edition    11.3.1 */
2584 HRESULT post_increment_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2585 {
2586     unary_expression_t *expr = (unary_expression_t*)_expr;
2587     VARIANT val, num;
2588     exprval_t exprval;
2589     HRESULT hres;
2590
2591     TRACE("\n");
2592
2593     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2594     if(FAILED(hres))
2595         return hres;
2596
2597     hres = exprval_value(ctx, &exprval, ei, &val);
2598     if(SUCCEEDED(hres)) {
2599         hres = to_number(ctx, &val, ei, &num);
2600         VariantClear(&val);
2601     }
2602
2603     if(SUCCEEDED(hres)) {
2604         VARIANT inc;
2605         num_set_val(&inc, num_val(&num)+1.0);
2606         hres = put_value(ctx, &exprval, &inc, ei);
2607     }
2608
2609     exprval_release(&exprval);
2610     if(FAILED(hres))
2611         return hres;
2612
2613     ret->type = EXPRVAL_VARIANT;
2614     ret->u.var = num;
2615     return S_OK;
2616 }
2617
2618 /* ECMA-262 3rd Edition    11.3.2 */
2619 HRESULT post_decrement_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2620 {
2621     unary_expression_t *expr = (unary_expression_t*)_expr;
2622     VARIANT val, num;
2623     exprval_t exprval;
2624     HRESULT hres;
2625
2626     TRACE("\n");
2627
2628     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2629     if(FAILED(hres))
2630         return hres;
2631
2632     hres = exprval_value(ctx, &exprval, ei, &val);
2633     if(SUCCEEDED(hres)) {
2634         hres = to_number(ctx, &val, ei, &num);
2635         VariantClear(&val);
2636     }
2637
2638     if(SUCCEEDED(hres)) {
2639         VARIANT dec;
2640         num_set_val(&dec, num_val(&num)-1.0);
2641         hres = put_value(ctx, &exprval, &dec, ei);
2642     }
2643
2644     exprval_release(&exprval);
2645     if(FAILED(hres))
2646         return hres;
2647
2648     ret->type = EXPRVAL_VARIANT;
2649     ret->u.var = num;
2650     return S_OK;
2651 }
2652
2653 /* ECMA-262 3rd Edition    11.4.4 */
2654 HRESULT pre_increment_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2655 {
2656     unary_expression_t *expr = (unary_expression_t*)_expr;
2657     VARIANT val, num;
2658     exprval_t exprval;
2659     HRESULT hres;
2660
2661     TRACE("\n");
2662
2663     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2664     if(FAILED(hres))
2665         return hres;
2666
2667     hres = exprval_value(ctx, &exprval, ei, &val);
2668     if(SUCCEEDED(hres)) {
2669         hres = to_number(ctx, &val, ei, &num);
2670         VariantClear(&val);
2671     }
2672
2673     if(SUCCEEDED(hres)) {
2674         num_set_val(&val, num_val(&num)+1.0);
2675         hres = put_value(ctx, &exprval, &val, ei);
2676     }
2677
2678     exprval_release(&exprval);
2679     if(FAILED(hres))
2680         return hres;
2681
2682     ret->type = EXPRVAL_VARIANT;
2683     ret->u.var = val;
2684     return S_OK;
2685 }
2686
2687 /* ECMA-262 3rd Edition    11.4.5 */
2688 HRESULT pre_decrement_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2689 {
2690     unary_expression_t *expr = (unary_expression_t*)_expr;
2691     VARIANT val, num;
2692     exprval_t exprval;
2693     HRESULT hres;
2694
2695     TRACE("\n");
2696
2697     hres = expr_eval(ctx, expr->expression, EXPR_NEWREF, ei, &exprval);
2698     if(FAILED(hres))
2699         return hres;
2700
2701     hres = exprval_value(ctx, &exprval, ei, &val);
2702     if(SUCCEEDED(hres)) {
2703         hres = to_number(ctx, &val, ei, &num);
2704         VariantClear(&val);
2705     }
2706
2707     if(SUCCEEDED(hres)) {
2708         num_set_val(&val, num_val(&num)-1.0);
2709         hres = put_value(ctx, &exprval, &val, ei);
2710     }
2711
2712     exprval_release(&exprval);
2713     if(FAILED(hres))
2714         return hres;
2715
2716     ret->type = EXPRVAL_VARIANT;
2717     ret->u.var = val;
2718     return S_OK;
2719 }
2720
2721 /* ECMA-262 3rd Edition    11.9.3 */
2722 static HRESULT equal_values(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, BOOL *ret)
2723 {
2724     if(V_VT(lval) == V_VT(rval) || (is_num_vt(V_VT(lval)) && is_num_vt(V_VT(rval))))
2725        return equal2_values(lval, rval, ret);
2726
2727     /* FIXME: NULL disps should be handled in more general way */
2728     if(V_VT(lval) == VT_DISPATCH && !V_DISPATCH(lval)) {
2729         VARIANT v;
2730         V_VT(&v) = VT_NULL;
2731         return equal_values(ctx, &v, rval, ei, ret);
2732     }
2733
2734     if(V_VT(rval) == VT_DISPATCH && !V_DISPATCH(rval)) {
2735         VARIANT v;
2736         V_VT(&v) = VT_NULL;
2737         return equal_values(ctx, lval, &v, ei, ret);
2738     }
2739
2740     if((V_VT(lval) == VT_NULL && V_VT(rval) == VT_EMPTY) ||
2741        (V_VT(lval) == VT_EMPTY && V_VT(rval) == VT_NULL)) {
2742         *ret = TRUE;
2743         return S_OK;
2744     }
2745
2746     if(V_VT(lval) == VT_BSTR && is_num_vt(V_VT(rval))) {
2747         VARIANT v;
2748         HRESULT hres;
2749
2750         hres = to_number(ctx, lval, ei, &v);
2751         if(FAILED(hres))
2752             return hres;
2753
2754         return equal_values(ctx, &v, rval, ei, ret);
2755     }
2756
2757     if(V_VT(rval) == VT_BSTR && is_num_vt(V_VT(lval))) {
2758         VARIANT v;
2759         HRESULT hres;
2760
2761         hres = to_number(ctx, rval, ei, &v);
2762         if(FAILED(hres))
2763             return hres;
2764
2765         return equal_values(ctx, lval, &v, ei, ret);
2766     }
2767
2768     if(V_VT(rval) == VT_BOOL) {
2769         VARIANT v;
2770
2771         V_VT(&v) = VT_I4;
2772         V_I4(&v) = V_BOOL(rval) ? 1 : 0;
2773         return equal_values(ctx, lval, &v, ei, ret);
2774     }
2775
2776     if(V_VT(lval) == VT_BOOL) {
2777         VARIANT v;
2778
2779         V_VT(&v) = VT_I4;
2780         V_I4(&v) = V_BOOL(lval) ? 1 : 0;
2781         return equal_values(ctx, &v, rval, ei, ret);
2782     }
2783
2784
2785     if(V_VT(rval) == VT_DISPATCH && (V_VT(lval) == VT_BSTR || is_num_vt(V_VT(lval)))) {
2786         VARIANT v;
2787         HRESULT hres;
2788
2789         hres = to_primitive(ctx, rval, ei, &v, NO_HINT);
2790         if(FAILED(hres))
2791             return hres;
2792
2793         hres = equal_values(ctx, lval, &v, ei, ret);
2794
2795         VariantClear(&v);
2796         return hres;
2797     }
2798
2799
2800     if(V_VT(lval) == VT_DISPATCH && (V_VT(rval) == VT_BSTR || is_num_vt(V_VT(rval)))) {
2801         VARIANT v;
2802         HRESULT hres;
2803
2804         hres = to_primitive(ctx, lval, ei, &v, NO_HINT);
2805         if(FAILED(hres))
2806             return hres;
2807
2808         hres = equal_values(ctx, &v, rval, ei, ret);
2809
2810         VariantClear(&v);
2811         return hres;
2812     }
2813
2814
2815     *ret = FALSE;
2816     return S_OK;
2817 }
2818
2819 /* ECMA-262 3rd Edition    11.9.1 */
2820 HRESULT equal_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2821 {
2822     binary_expression_t *expr = (binary_expression_t*)_expr;
2823     VARIANT rval, lval;
2824     BOOL b;
2825     HRESULT hres;
2826
2827     TRACE("\n");
2828
2829     hres = get_binary_expr_values(ctx, expr, ei, &rval, &lval);
2830     if(FAILED(hres))
2831         return hres;
2832
2833     hres = equal_values(ctx, &rval, &lval, ei, &b);
2834     VariantClear(&lval);
2835     VariantClear(&rval);
2836     if(FAILED(hres))
2837         return hres;
2838
2839     return return_bool(ret, b);
2840 }
2841
2842 /* ECMA-262 3rd Edition    11.9.4 */
2843 static HRESULT interp_eq2(exec_ctx_t *ctx)
2844 {
2845     VARIANT *l, *r;
2846     BOOL b;
2847     HRESULT hres;
2848
2849     TRACE("\n");
2850
2851     r = stack_pop(ctx);
2852     l = stack_pop(ctx);
2853
2854     hres = equal2_values(r, l, &b);
2855     VariantClear(l);
2856     VariantClear(r);
2857     if(FAILED(hres))
2858         return hres;
2859
2860     return stack_push_bool(ctx, b);
2861 }
2862
2863 /* ECMA-262 3rd Edition    11.9.2 */
2864 HRESULT not_equal_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2865 {
2866     binary_expression_t *expr = (binary_expression_t*)_expr;
2867     VARIANT rval, lval;
2868     BOOL b;
2869     HRESULT hres;
2870
2871     TRACE("\n");
2872
2873     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2874     if(FAILED(hres))
2875         return hres;
2876
2877     hres = equal_values(ctx, &lval, &rval, ei, &b);
2878     VariantClear(&lval);
2879     VariantClear(&rval);
2880     if(FAILED(hres))
2881         return hres;
2882
2883     return return_bool(ret, !b);
2884 }
2885
2886 /* ECMA-262 3rd Edition    11.9.5 */
2887 static HRESULT interp_neq2(exec_ctx_t *ctx)
2888 {
2889     VARIANT *l, *r;
2890     BOOL b;
2891     HRESULT hres;
2892
2893     TRACE("\n");
2894
2895     r = stack_pop(ctx);
2896     l = stack_pop(ctx);
2897
2898     hres = equal2_values(r, l, &b);
2899     VariantClear(l);
2900     VariantClear(r);
2901     if(FAILED(hres))
2902         return hres;
2903
2904     return stack_push_bool(ctx, !b);
2905 }
2906
2907 /* ECMA-262 3rd Edition    11.8.5 */
2908 static HRESULT less_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, BOOL greater, jsexcept_t *ei, BOOL *ret)
2909 {
2910     VARIANT l, r, ln, rn;
2911     HRESULT hres;
2912
2913     hres = to_primitive(ctx, lval, ei, &l, NO_HINT);
2914     if(FAILED(hres))
2915         return hres;
2916
2917     hres = to_primitive(ctx, rval, ei, &r, NO_HINT);
2918     if(FAILED(hres)) {
2919         VariantClear(&l);
2920         return hres;
2921     }
2922
2923     if(V_VT(&l) == VT_BSTR && V_VT(&r) == VT_BSTR) {
2924         *ret = (strcmpW(V_BSTR(&l), V_BSTR(&r)) < 0) ^ greater;
2925         SysFreeString(V_BSTR(&l));
2926         SysFreeString(V_BSTR(&r));
2927         return S_OK;
2928     }
2929
2930     hres = to_number(ctx, &l, ei, &ln);
2931     VariantClear(&l);
2932     if(SUCCEEDED(hres))
2933         hres = to_number(ctx, &r, ei, &rn);
2934     VariantClear(&r);
2935     if(FAILED(hres))
2936         return hres;
2937
2938     if(V_VT(&ln) == VT_I4 && V_VT(&rn) == VT_I4) {
2939         *ret = (V_I4(&ln) < V_I4(&rn)) ^ greater;
2940     }else  {
2941         DOUBLE ld = num_val(&ln);
2942         DOUBLE rd = num_val(&rn);
2943
2944         *ret = !isnan(ld) && !isnan(rd) && ((ld < rd) ^ greater);
2945     }
2946
2947     return S_OK;
2948 }
2949
2950 /* ECMA-262 3rd Edition    11.8.1 */
2951 HRESULT less_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2952 {
2953     binary_expression_t *expr = (binary_expression_t*)_expr;
2954     VARIANT rval, lval;
2955     BOOL b;
2956     HRESULT hres;
2957
2958     TRACE("\n");
2959
2960     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2961     if(FAILED(hres))
2962         return hres;
2963
2964     hres = less_eval(ctx, &lval, &rval, FALSE, ei, &b);
2965     VariantClear(&lval);
2966     VariantClear(&rval);
2967     if(FAILED(hres))
2968         return hres;
2969
2970     return return_bool(ret, b);
2971 }
2972
2973 /* ECMA-262 3rd Edition    11.8.3 */
2974 HRESULT lesseq_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2975 {
2976     binary_expression_t *expr = (binary_expression_t*)_expr;
2977     VARIANT rval, lval;
2978     BOOL b;
2979     HRESULT hres;
2980
2981     TRACE("\n");
2982
2983     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
2984     if(FAILED(hres))
2985         return hres;
2986
2987     hres = less_eval(ctx, &rval, &lval, TRUE, ei, &b);
2988     VariantClear(&lval);
2989     VariantClear(&rval);
2990     if(FAILED(hres))
2991         return hres;
2992
2993     return return_bool(ret, b);
2994 }
2995
2996 /* ECMA-262 3rd Edition    11.8.2 */
2997 HRESULT greater_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
2998 {
2999     binary_expression_t *expr = (binary_expression_t*)_expr;
3000     VARIANT rval, lval;
3001     BOOL b;
3002     HRESULT hres;
3003
3004     TRACE("\n");
3005
3006     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
3007     if(FAILED(hres))
3008         return hres;
3009
3010     hres = less_eval(ctx, &rval, &lval, FALSE, ei, &b);
3011     VariantClear(&lval);
3012     VariantClear(&rval);
3013     if(FAILED(hres))
3014         return hres;
3015
3016     return return_bool(ret, b);
3017 }
3018
3019 /* ECMA-262 3rd Edition    11.8.4 */
3020 HRESULT greatereq_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3021 {
3022     binary_expression_t *expr = (binary_expression_t*)_expr;
3023     VARIANT rval, lval;
3024     BOOL b;
3025     HRESULT hres;
3026
3027     TRACE("\n");
3028
3029     hres = get_binary_expr_values(ctx, expr, ei, &lval, &rval);
3030     if(FAILED(hres))
3031         return hres;
3032
3033     hres = less_eval(ctx, &lval, &rval, TRUE, ei, &b);
3034     VariantClear(&lval);
3035     VariantClear(&rval);
3036     if(FAILED(hres))
3037         return hres;
3038
3039     return return_bool(ret, b);
3040 }
3041
3042 /* ECMA-262 3rd Edition    11.4.8 */
3043 HRESULT interp_bneg(exec_ctx_t *ctx)
3044 {
3045     VARIANT *v, r;
3046     INT i;
3047     HRESULT hres;
3048
3049     TRACE("\n");
3050
3051     v = stack_pop(ctx);
3052     hres = to_int32(ctx->parser->script, v, &ctx->ei, &i);
3053     VariantClear(v);
3054     if(FAILED(hres))
3055         return hres;
3056
3057     V_VT(&r) = VT_I4;
3058     V_I4(&r) = ~i;
3059     return stack_push(ctx, &r);
3060 }
3061
3062 /* ECMA-262 3rd Edition    11.4.9 */
3063 HRESULT interp_neg(exec_ctx_t *ctx)
3064 {
3065     VARIANT *v;
3066     VARIANT_BOOL b;
3067     HRESULT hres;
3068
3069     TRACE("\n");
3070
3071     v = stack_pop(ctx);
3072     hres = to_boolean(v, &b);
3073     VariantClear(v);
3074     if(FAILED(hres))
3075         return hres;
3076
3077     return stack_push_bool(ctx, !b);
3078 }
3079
3080 /* ECMA-262 3rd Edition    11.7.1 */
3081 static HRESULT lshift_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3082 {
3083     DWORD ri;
3084     INT li;
3085     HRESULT hres;
3086
3087     hres = to_int32(ctx, lval, ei, &li);
3088     if(FAILED(hres))
3089         return hres;
3090
3091     hres = to_uint32(ctx, rval, ei, &ri);
3092     if(FAILED(hres))
3093         return hres;
3094
3095     V_VT(retv) = VT_I4;
3096     V_I4(retv) = li << (ri&0x1f);
3097     return S_OK;
3098 }
3099
3100 /* ECMA-262 3rd Edition    11.7.1 */
3101 HRESULT left_shift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3102 {
3103     binary_expression_t *expr = (binary_expression_t*)_expr;
3104
3105     TRACE("\n");
3106
3107     return binary_expr_eval(ctx, expr, lshift_eval, ei, ret);
3108 }
3109
3110 /* ECMA-262 3rd Edition    11.7.2 */
3111 static HRESULT rshift_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3112 {
3113     DWORD ri;
3114     INT li;
3115     HRESULT hres;
3116
3117     hres = to_int32(ctx, lval, ei, &li);
3118     if(FAILED(hres))
3119         return hres;
3120
3121     hres = to_uint32(ctx, rval, ei, &ri);
3122     if(FAILED(hres))
3123         return hres;
3124
3125     V_VT(retv) = VT_I4;
3126     V_I4(retv) = li >> (ri&0x1f);
3127     return S_OK;
3128 }
3129
3130 /* ECMA-262 3rd Edition    11.7.2 */
3131 HRESULT right_shift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3132 {
3133     binary_expression_t *expr = (binary_expression_t*)_expr;
3134
3135     TRACE("\n");
3136
3137     return binary_expr_eval(ctx, expr, rshift_eval, ei, ret);
3138 }
3139
3140 /* ECMA-262 3rd Edition    11.7.3 */
3141 static HRESULT rshift2_eval(script_ctx_t *ctx, VARIANT *lval, VARIANT *rval, jsexcept_t *ei, VARIANT *retv)
3142 {
3143     DWORD li, ri;
3144     HRESULT hres;
3145
3146     hres = to_uint32(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    11.7.3 */
3160 HRESULT right2_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, rshift2_eval, ei, ret);
3167 }
3168
3169 /* ECMA-262 3rd Edition    11.13.1 */
3170 HRESULT assign_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3171 {
3172     binary_expression_t *expr = (binary_expression_t*)_expr;
3173     exprval_t exprval, exprvalr;
3174     VARIANT rval;
3175     HRESULT hres;
3176
3177     TRACE("\n");
3178
3179     hres = expr_eval(ctx, expr->expression1, EXPR_NEWREF, ei, &exprval);
3180     if(FAILED(hres))
3181         return hres;
3182
3183     hres = expr_eval(ctx, expr->expression2, 0, ei, &exprvalr);
3184     if(SUCCEEDED(hres)) {
3185         hres = exprval_to_value(ctx, &exprvalr, ei, &rval);
3186         exprval_release(&exprvalr);
3187     }
3188
3189     if(SUCCEEDED(hres)) {
3190         hres = put_value(ctx, &exprval, &rval, ei);
3191         if(FAILED(hres))
3192             VariantClear(&rval);
3193     }
3194
3195     exprval_release(&exprval);
3196     if(FAILED(hres))
3197         return hres;
3198
3199     ret->type = EXPRVAL_VARIANT;
3200     ret->u.var = rval;
3201     return S_OK;
3202 }
3203
3204 /* ECMA-262 3rd Edition    11.13.2 */
3205 HRESULT assign_lshift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3206 {
3207     binary_expression_t *expr = (binary_expression_t*)_expr;
3208
3209     TRACE("\n");
3210
3211     return assign_oper_eval(ctx, expr->expression1, expr->expression2, lshift_eval, ei, ret);
3212 }
3213
3214 /* ECMA-262 3rd Edition    11.13.2 */
3215 HRESULT assign_rshift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3216 {
3217     binary_expression_t *expr = (binary_expression_t*)_expr;
3218
3219     TRACE("\n");
3220
3221     return assign_oper_eval(ctx, expr->expression1, expr->expression2, rshift_eval, ei, ret);
3222 }
3223
3224 /* ECMA-262 3rd Edition    11.13.2 */
3225 HRESULT assign_rrshift_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3226 {
3227     binary_expression_t *expr = (binary_expression_t*)_expr;
3228
3229     TRACE("\n");
3230
3231     return assign_oper_eval(ctx, expr->expression1, expr->expression2, rshift2_eval, ei, ret);
3232 }
3233
3234 /* ECMA-262 3rd Edition    11.13.2 */
3235 HRESULT assign_add_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3236 {
3237     binary_expression_t *expr = (binary_expression_t*)_expr;
3238
3239     TRACE("\n");
3240
3241     return assign_oper_eval(ctx, expr->expression1, expr->expression2, add_eval, ei, ret);
3242 }
3243
3244 /* ECMA-262 3rd Edition    11.13.2 */
3245 HRESULT assign_sub_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3246 {
3247     binary_expression_t *expr = (binary_expression_t*)_expr;
3248
3249     TRACE("\n");
3250
3251     return assign_oper_eval(ctx, expr->expression1, expr->expression2, sub_eval, ei, ret);
3252 }
3253
3254 /* ECMA-262 3rd Edition    11.13.2 */
3255 HRESULT assign_mul_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3256 {
3257     binary_expression_t *expr = (binary_expression_t*)_expr;
3258
3259     TRACE("\n");
3260
3261     return assign_oper_eval(ctx, expr->expression1, expr->expression2, mul_eval, ei, ret);
3262 }
3263
3264 /* ECMA-262 3rd Edition    11.13.2 */
3265 HRESULT assign_div_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3266 {
3267     binary_expression_t *expr = (binary_expression_t*)_expr;
3268
3269     TRACE("\n");
3270
3271     return assign_oper_eval(ctx, expr->expression1, expr->expression2, div_eval, ei, ret);
3272 }
3273
3274 /* ECMA-262 3rd Edition    11.13.2 */
3275 HRESULT assign_mod_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3276 {
3277     binary_expression_t *expr = (binary_expression_t*)_expr;
3278
3279     TRACE("\n");
3280
3281     return assign_oper_eval(ctx, expr->expression1, expr->expression2, mod_eval, ei, ret);
3282 }
3283
3284 /* ECMA-262 3rd Edition    11.13.2 */
3285 HRESULT assign_and_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3286 {
3287     binary_expression_t *expr = (binary_expression_t*)_expr;
3288
3289     TRACE("\n");
3290
3291     return assign_oper_eval(ctx, expr->expression1, expr->expression2, bitand_eval, ei, ret);
3292 }
3293
3294 /* ECMA-262 3rd Edition    11.13.2 */
3295 HRESULT assign_or_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3296 {
3297     binary_expression_t *expr = (binary_expression_t*)_expr;
3298
3299     TRACE("\n");
3300
3301     return assign_oper_eval(ctx, expr->expression1, expr->expression2, bitor_eval, ei, ret);
3302 }
3303
3304 /* ECMA-262 3rd Edition    11.13.2 */
3305 HRESULT assign_xor_expression_eval(script_ctx_t *ctx, expression_t *_expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3306 {
3307     binary_expression_t *expr = (binary_expression_t*)_expr;
3308
3309     TRACE("\n");
3310
3311     return assign_oper_eval(ctx, expr->expression1, expr->expression2, xor_eval, ei, ret);
3312 }
3313
3314 static HRESULT interp_ret(exec_ctx_t *ctx)
3315 {
3316     TRACE("\n");
3317
3318     ctx->ip = -1;
3319     return S_OK;
3320 }
3321
3322 static HRESULT interp_tree(exec_ctx_t *ctx)
3323 {
3324     instr_t *instr = ctx->parser->code->instrs+ctx->ip;
3325     exprval_t val;
3326     VARIANT v;
3327     HRESULT hres;
3328
3329     TRACE("\n");
3330
3331     hres = expr_eval(ctx->parser->script, instr->arg1.expr, 0, &ctx->ei, &val);
3332     if(FAILED(hres))
3333         return hres;
3334
3335     hres = exprval_to_value(ctx->parser->script, &val, &ctx->ei, &v);
3336     if(FAILED(hres))
3337         return hres;
3338
3339     return stack_push(ctx, &v);
3340 }
3341
3342 typedef HRESULT (*op_func_t)(exec_ctx_t*);
3343
3344 static const op_func_t op_funcs[] = {
3345 #define X(x,a,b) interp_##x,
3346 OP_LIST
3347 #undef X
3348 };
3349
3350 static const unsigned op_move[] = {
3351 #define X(a,x,b) x,
3352 OP_LIST
3353 #undef X
3354 };
3355
3356 HRESULT interp_expression_eval(script_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3357 {
3358     exec_ctx_t *exec_ctx = ctx->exec_ctx;
3359     unsigned prev_ip, prev_top;
3360     jsop_t op;
3361     HRESULT hres = S_OK;
3362
3363     TRACE("\n");
3364
3365     prev_top = exec_ctx->top;
3366     prev_ip = exec_ctx->ip;
3367     exec_ctx->ip = expr->instr_off;
3368
3369     while(exec_ctx->ip != -1) {
3370         op = exec_ctx->parser->code->instrs[exec_ctx->ip].op;
3371         hres = op_funcs[op](exec_ctx);
3372         if(FAILED(hres))
3373             break;
3374         exec_ctx->ip += op_move[op];
3375     }
3376
3377     exec_ctx->ip = prev_ip;
3378
3379     if(FAILED(hres)) {
3380         stack_popn(exec_ctx, exec_ctx->top-prev_top);
3381         *ei = exec_ctx->ei;
3382         memset(&exec_ctx->ei, 0, sizeof(exec_ctx->ei));
3383         return hres;
3384     }
3385
3386     assert(exec_ctx->top == prev_top+1);
3387
3388     ret->type = EXPRVAL_VARIANT;
3389     ret->u.var = *stack_pop(exec_ctx);
3390     return S_OK;
3391 }
3392
3393 HRESULT compiled_expression_eval(script_ctx_t *ctx, expression_t *expr, DWORD flags, jsexcept_t *ei, exprval_t *ret)
3394 {
3395     HRESULT hres;
3396
3397     TRACE("\n");
3398
3399     hres = compile_subscript(ctx->exec_ctx->parser, expr, &expr->instr_off);
3400     if(FAILED(hres))
3401         return hres;
3402
3403     return (expr->eval = interp_expression_eval)(ctx, expr, flags, ei, ret);
3404 }