dll/win32/vbscript/interp.c

   1 /*
   2  * Copyright 2011 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "vbscript.h"
  20
  21 static DISPID propput_dispid = DISPID_PROPERTYPUT;
  22
  23 typedef struct {
  24     vbscode_t *code;
  25     instr_t *instr;
  26     script_ctx_t *script;
  27     function_t *func;
  28     IDispatch *this_obj;
  29     vbdisp_t *vbthis;
  30
  31     VARIANT *args;
  32     VARIANT *vars;
  33     SAFEARRAY **arrays;
  34
  35     dynamic_var_t *dynamic_vars;
  36     heap_pool_t heap;
  37
  38     BOOL resume_next;
  39
  40     unsigned stack_size;
  41     unsigned top;
  42     VARIANT *stack;
  43
  44     VARIANT ret_val;
  45 } exec_ctx_t;
  46
  47 typedef HRESULT (*instr_func_t)(exec_ctx_t*);
  48
  49 typedef enum {
  50     REF_NONE,
  51     REF_DISP,
  52     REF_VAR,
  53     REF_OBJ,
  54     REF_CONST,
  55     REF_FUNC
  56 } ref_type_t;
  57
  58 typedef struct {
  59     ref_type_t type;
  60     union {
  61         struct {
  62             IDispatch *disp;
  63             DISPID id;
  64         } d;
  65         VARIANT *v;
  66         function_t *f;
  67         IDispatch *obj;
  68     } u;
  69 } ref_t;
  70
  71 typedef struct {
  72     VARIANT *v;
  73     VARIANT store;
  74     BOOL owned;
  75 } variant_val_t;
  76
  77 static BOOL lookup_dynamic_vars(dynamic_var_t *var, const WCHAR *name, ref_t *ref)
  78 {
  79     while(var) {
  80         if(!strcmpiW(var->name, name)) {
  81             ref->type = var->is_const ? REF_CONST : REF_VAR;
  82             ref->u.v = &var->v;
  83             return TRUE;
  84         }
  85
  86         var = var->next;
  87     }
  88
  89     return FALSE;
  90 }
  91
  92 static HRESULT lookup_identifier(exec_ctx_t *ctx, BSTR name, vbdisp_invoke_type_t invoke_type, ref_t *ref)
  93 {
  94     named_item_t *item;
  95     function_t *func;
  96     unsigned i;
  97     DISPID id;
  98     HRESULT hres;
  99
 100     static const WCHAR errW[] = {'e','r','r',0};
 101
 102     if(invoke_type == VBDISP_LET
 103             && (ctx->func->type == FUNC_FUNCTION || ctx->func->type == FUNC_PROPGET || ctx->func->type == FUNC_DEFGET)
 104             && !strcmpiW(name, ctx->func->name)) {
 105         ref->type = REF_VAR;
 106         ref->u.v = &ctx->ret_val;
 107         return S_OK;
 108     }
 109
 110     for(i=0; i < ctx->func->var_cnt; i++) {
 111         if(!strcmpiW(ctx->func->vars[i].name, name)) {
 112             ref->type = REF_VAR;
 113             ref->u.v = ctx->vars+i;
 114             return TRUE;
 115         }
 116     }
 117
 118     for(i=0; i < ctx->func->arg_cnt; i++) {
 119         if(!strcmpiW(ctx->func->args[i].name, name)) {
 120             ref->type = REF_VAR;
 121             ref->u.v = ctx->args+i;
 122             return S_OK;
 123         }
 124     }
 125
 126     if(lookup_dynamic_vars(ctx->func->type == FUNC_GLOBAL ? ctx->script->global_vars : ctx->dynamic_vars, name, ref))
 127         return S_OK;
 128
 129     if(ctx->func->type != FUNC_GLOBAL) {
 130         if(ctx->vbthis) {
 131             /* FIXME: Bind such identifier while generating bytecode. */
 132             for(i=0; i < ctx->vbthis->desc->prop_cnt; i++) {
 133                 if(!strcmpiW(ctx->vbthis->desc->props[i].name, name)) {
 134                     ref->type = REF_VAR;
 135                     ref->u.v = ctx->vbthis->props+i;
 136                     return S_OK;
 137                 }
 138             }
 139         }
 140
 141         hres = disp_get_id(ctx->this_obj, name, invoke_type, TRUE, &id);
 142         if(SUCCEEDED(hres)) {
 143             ref->type = REF_DISP;
 144             ref->u.d.disp = ctx->this_obj;
 145             ref->u.d.id = id;
 146             return S_OK;
 147         }
 148     }
 149
 150     if(ctx->func->type != FUNC_GLOBAL && lookup_dynamic_vars(ctx->script->global_vars, name, ref))
 151         return S_OK;
 152
 153     for(func = ctx->script->global_funcs; func; func = func->next) {
 154         if(!strcmpiW(func->name, name)) {
 155             ref->type = REF_FUNC;
 156             ref->u.f = func;
 157             return S_OK;
 158         }
 159     }
 160
 161     if(!strcmpiW(name, errW)) {
 162         ref->type = REF_OBJ;
 163         ref->u.obj = (IDispatch*)&ctx->script->err_obj->IDispatchEx_iface;
 164         return S_OK;
 165     }
 166
 167     hres = vbdisp_get_id(ctx->script->global_obj, name, invoke_type, TRUE, &id);
 168     if(SUCCEEDED(hres)) {
 169         ref->type = REF_DISP;
 170         ref->u.d.disp = (IDispatch*)&ctx->script->global_obj->IDispatchEx_iface;
 171         ref->u.d.id = id;
 172         return S_OK;
 173     }
 174
 175     LIST_FOR_EACH_ENTRY(item, &ctx->script->named_items, named_item_t, entry) {
 176         if((item->flags & SCRIPTITEM_ISVISIBLE) && !strcmpiW(item->name, name)) {
 177             if(!item->disp) {
 178                 IUnknown *unk;
 179
 180                 hres = IActiveScriptSite_GetItemInfo(ctx->script->site, name, SCRIPTINFO_IUNKNOWN, &unk, NULL);
 181                 if(FAILED(hres)) {
 182                     WARN("GetItemInfo failed: %08x\n", hres);
 183                     continue;
 184                 }
 185
 186                 hres = IUnknown_QueryInterface(unk, &IID_IDispatch, (void**)&item->disp);
 187                 IUnknown_Release(unk);
 188                 if(FAILED(hres)) {
 189                     WARN("object does not implement IDispatch\n");
 190                     continue;
 191                 }
 192             }
 193
 194             ref->type = REF_OBJ;
 195             ref->u.obj = item->disp;
 196             return S_OK;
 197         }
 198     }
 199
 200     LIST_FOR_EACH_ENTRY(item, &ctx->script->named_items, named_item_t, entry) {
 201         if((item->flags & SCRIPTITEM_GLOBALMEMBERS)) {
 202             hres = disp_get_id(item->disp, name, invoke_type, FALSE, &id);
 203             if(SUCCEEDED(hres)) {
 204                 ref->type = REF_DISP;
 205                 ref->u.d.disp = item->disp;
 206                 ref->u.d.id = id;
 207                 return S_OK;
 208             }
 209         }
 210     }
 211
 212     ref->type = REF_NONE;
 213     return S_OK;
 214 }
 215
 216 static HRESULT add_dynamic_var(exec_ctx_t *ctx, const WCHAR *name,
 217         BOOL is_const, VARIANT *val, BOOL own_val, VARIANT **out_var)
 218 {
 219     dynamic_var_t *new_var;
 220     heap_pool_t *heap;
 221     WCHAR *str;
 222     unsigned size;
 223     HRESULT hres;
 224
 225     heap = ctx->func->type == FUNC_GLOBAL ? &ctx->script->heap : &ctx->heap;
 226
 227     new_var = heap_pool_alloc(heap, sizeof(*new_var));
 228     if(!new_var)
 229         return E_OUTOFMEMORY;
 230
 231     size = (strlenW(name)+1)*sizeof(WCHAR);
 232     str = heap_pool_alloc(heap, size);
 233     if(!str)
 234         return E_OUTOFMEMORY;
 235     memcpy(str, name, size);
 236     new_var->name = str;
 237     new_var->is_const = is_const;
 238
 239     if(own_val) {
 240         new_var->v = *val;
 241     }else {
 242         V_VT(&new_var->v) = VT_EMPTY;
 243         hres = VariantCopy(&new_var->v, val);
 244         if(FAILED(hres))
 245             return hres;
 246     }
 247
 248     if(ctx->func->type == FUNC_GLOBAL) {
 249         new_var->next = ctx->script->global_vars;
 250         ctx->script->global_vars = new_var;
 251     }else {
 252         new_var->next = ctx->dynamic_vars;
 253         ctx->dynamic_vars = new_var;
 254     }
 255
 256     if(out_var)
 257         *out_var = &new_var->v;
 258
 259     return S_OK;
 260 }
 261
 262 static inline VARIANT *stack_pop(exec_ctx_t *ctx)
 263 {
 264     assert(ctx->top);
 265     return ctx->stack + --ctx->top;
 266 }
 267
 268 static inline VARIANT *stack_top(exec_ctx_t *ctx, unsigned n)
 269 {
 270     assert(ctx->top >= n);
 271     return ctx->stack + (ctx->top-n-1);
 272 }
 273
 274 static HRESULT stack_push(exec_ctx_t *ctx, VARIANT *v)
 275 {
 276     if(ctx->stack_size == ctx->top) {
 277         VARIANT *new_stack;
 278
 279         new_stack = heap_realloc(ctx->stack, ctx->stack_size*2*sizeof(*ctx->stack));
 280         if(!new_stack) {
 281             VariantClear(v);
 282             return E_OUTOFMEMORY;
 283         }
 284
 285         ctx->stack = new_stack;
 286         ctx->stack_size *= 2;
 287     }
 288
 289     ctx->stack[ctx->top++] = *v;
 290     return S_OK;
 291 }
 292
 293 static inline HRESULT stack_push_null(exec_ctx_t *ctx)
 294 {
 295     VARIANT v;
 296     V_VT(&v) = VT_NULL;
 297     return stack_push(ctx, &v);
 298 }
 299
 300 static void stack_popn(exec_ctx_t *ctx, unsigned n)
 301 {
 302     while(n--)
 303         VariantClear(stack_pop(ctx));
 304 }
 305
 306 static void stack_pop_deref(exec_ctx_t *ctx, variant_val_t *r)
 307 {
 308     VARIANT *v;
 309
 310     v = stack_pop(ctx);
 311     if(V_VT(v) == (VT_BYREF|VT_VARIANT)) {
 312         r->owned = FALSE;
 313         r->v = V_VARIANTREF(v);
 314     }else {
 315         r->owned = TRUE;
 316         r->v = v;
 317     }
 318 }
 319
 320 static inline void release_val(variant_val_t *v)
 321 {
 322     if(v->owned)
 323         VariantClear(v->v);
 324 }
 325
 326 static HRESULT stack_pop_val(exec_ctx_t *ctx, variant_val_t *r)
 327 {
 328     stack_pop_deref(ctx, r);
 329
 330     if(V_VT(r->v) == VT_DISPATCH) {
 331         DISPPARAMS dp = {0};
 332         HRESULT hres;
 333
 334         hres = disp_call(ctx->script, V_DISPATCH(r->v), DISPID_VALUE, &dp, &r->store);
 335         if(r->owned)
 336             IDispatch_Release(V_DISPATCH(r->v));
 337         if(FAILED(hres))
 338             return hres;
 339
 340         r->owned = TRUE;
 341         r->v = &r->store;
 342     }
 343
 344     return S_OK;
 345 }
 346
 347 static HRESULT stack_assume_val(exec_ctx_t *ctx, unsigned n)
 348 {
 349     VARIANT *v = stack_top(ctx, n);
 350     HRESULT hres;
 351
 352     if(V_VT(v) == (VT_BYREF|VT_VARIANT)) {
 353         VARIANT *ref = V_VARIANTREF(v);
 354
 355         V_VT(v) = VT_EMPTY;
 356         hres = VariantCopy(v, ref);
 357         if(FAILED(hres))
 358             return hres;
 359     }
 360
 361     if(V_VT(v) == VT_DISPATCH) {
 362         DISPPARAMS dp = {0};
 363         IDispatch *disp;
 364
 365         disp = V_DISPATCH(v);
 366         V_VT(v) = VT_EMPTY;
 367         hres = disp_call(ctx->script, disp, DISPID_VALUE, &dp, v);
 368         IDispatch_Release(disp);
 369         if(FAILED(hres))
 370             return hres;
 371     }
 372
 373     return S_OK;
 374 }
 375
 376 static int stack_pop_bool(exec_ctx_t *ctx, BOOL *b)
 377 {
 378     variant_val_t val;
 379     HRESULT hres;
 380
 381     hres = stack_pop_val(ctx, &val);
 382     if(FAILED(hres))
 383         return hres;
 384
 385     switch (V_VT(val.v))
 386     {
 387     case VT_BOOL:
 388         *b = V_BOOL(val.v);
 389         break;
 390     case VT_NULL:
 391         *b = FALSE;
 392         break;
 393     case VT_I2:
 394         *b = V_I2(val.v);
 395         break;
 396     case VT_I4:
 397         *b = V_I4(val.v);
 398         break;
 399     default:
 400         FIXME("unsupported for %s\n", debugstr_variant(val.v));
 401         release_val(&val);
 402         return E_NOTIMPL;
 403     }
 404     return S_OK;
 405 }
 406
 407 static HRESULT stack_pop_disp(exec_ctx_t *ctx, IDispatch **ret)
 408 {
 409     VARIANT *v = stack_pop(ctx);
 410
 411     if(V_VT(v) == VT_DISPATCH) {
 412         *ret = V_DISPATCH(v);
 413         return S_OK;
 414     }
 415
 416     if(V_VT(v) != (VT_VARIANT|VT_BYREF)) {
 417         FIXME("not supported type: %s\n", debugstr_variant(v));
 418         VariantClear(v);
 419         return E_FAIL;
 420     }
 421
 422     v = V_BYREF(v);
 423     if(V_VT(v) != VT_DISPATCH) {
 424         FIXME("not disp %s\n", debugstr_variant(v));
 425         return E_FAIL;
 426     }
 427
 428     if(V_DISPATCH(v))
 429         IDispatch_AddRef(V_DISPATCH(v));
 430     *ret = V_DISPATCH(v);
 431     return S_OK;
 432 }
 433
 434 static HRESULT stack_assume_disp(exec_ctx_t *ctx, unsigned n, IDispatch **disp)
 435 {
 436     VARIANT *v = stack_top(ctx, n), *ref;
 437
 438     if(V_VT(v) != VT_DISPATCH) {
 439         if(V_VT(v) != (VT_VARIANT|VT_BYREF)) {
 440             FIXME("not supported type: %s\n", debugstr_variant(v));
 441             return E_FAIL;
 442         }
 443
 444         ref = V_VARIANTREF(v);
 445         if(V_VT(ref) != VT_DISPATCH) {
 446             FIXME("not disp %s\n", debugstr_variant(ref));
 447             return E_FAIL;
 448         }
 449
 450         V_VT(v) = VT_DISPATCH;
 451         V_DISPATCH(v) = V_DISPATCH(ref);
 452         if(V_DISPATCH(v))
 453             IDispatch_AddRef(V_DISPATCH(v));
 454     }
 455
 456     if(disp)
 457         *disp = V_DISPATCH(v);
 458     return S_OK;
 459 }
 460
 461 static inline void instr_jmp(exec_ctx_t *ctx, unsigned addr)
 462 {
 463     ctx->instr = ctx->code->instrs + addr;
 464 }
 465
 466 static void vbstack_to_dp(exec_ctx_t *ctx, unsigned arg_cnt, BOOL is_propput, DISPPARAMS *dp)
 467 {
 468     dp->cNamedArgs = is_propput ? 1 : 0;
 469     dp->cArgs = arg_cnt + dp->cNamedArgs;
 470     dp->rgdispidNamedArgs = is_propput ? &propput_dispid : NULL;
 471
 472     if(arg_cnt) {
 473         VARIANT tmp;
 474         unsigned i;
 475
 476         assert(ctx->top >= arg_cnt);
 477
 478         for(i=1; i*2 <= arg_cnt; i++) {
 479             tmp = ctx->stack[ctx->top-i];
 480             ctx->stack[ctx->top-i] = ctx->stack[ctx->top-arg_cnt+i-1];
 481             ctx->stack[ctx->top-arg_cnt+i-1] = tmp;
 482         }
 483
 484         dp->rgvarg = ctx->stack + ctx->top-dp->cArgs;
 485     }else {
 486         dp->rgvarg = is_propput ? ctx->stack+ctx->top-1 : NULL;
 487     }
 488 }
 489
 490 static HRESULT array_access(exec_ctx_t *ctx, SAFEARRAY *array, DISPPARAMS *dp, VARIANT **ret)
 491 {
 492     unsigned cell_off = 0, dim_size = 1, i;
 493     unsigned argc = arg_cnt(dp);
 494     VARIANT *data;
 495     LONG idx;
 496     HRESULT hres;
 497
 498     if(!array) {
 499         FIXME("NULL array\n");
 500         return E_FAIL;
 501     }
 502
 503     if(array->cDims != argc) {
 504         FIXME("argc %d does not match cDims %d\n", dp->cArgs, array->cDims);
 505         return E_FAIL;
 506     }
 507
 508     for(i=0; i < argc; i++) {
 509         hres = to_int(get_arg(dp, i), &idx);
 510         if(FAILED(hres))
 511             return hres;
 512
 513         idx -= array->rgsabound[i].lLbound;
 514         if(idx >= array->rgsabound[i].cElements) {
 515             FIXME("out of bound element %d in dim %d of size %d\n", idx, i+1, array->rgsabound[i].cElements);
 516             return E_FAIL;
 517         }
 518
 519         cell_off += idx*dim_size;
 520         dim_size *= array->rgsabound[i].cElements;
 521     }
 522
 523     hres = SafeArrayAccessData(array, (void**)&data);
 524     if(FAILED(hres))
 525         return hres;
 526
 527     *ret = data+cell_off;
 528
 529     SafeArrayUnaccessData(array);
 530     return S_OK;
 531 }
 532
 533 static HRESULT do_icall(exec_ctx_t *ctx, VARIANT *res)
 534 {
 535     BSTR identifier = ctx->instr->arg1.bstr;
 536     const unsigned arg_cnt = ctx->instr->arg2.uint;
 537     DISPPARAMS dp;
 538     ref_t ref;
 539     HRESULT hres;
 540
 541     hres = lookup_identifier(ctx, identifier, VBDISP_CALLGET, &ref);
 542     if(FAILED(hres))
 543         return hres;
 544
 545     switch(ref.type) {
 546     case REF_VAR:
 547     case REF_CONST: {
 548         VARIANT *v;
 549
 550         if(!res) {
 551             FIXME("REF_VAR no res\n");
 552             return E_NOTIMPL;
 553         }
 554
 555         v = V_VT(ref.u.v) == (VT_VARIANT|VT_BYREF) ? V_VARIANTREF(ref.u.v) : ref.u.v;
 556
 557         if(arg_cnt) {
 558             SAFEARRAY *array = NULL;
 559
 560             switch(V_VT(v)) {
 561             case VT_ARRAY|VT_BYREF|VT_VARIANT:
 562                 array = *V_ARRAYREF(ref.u.v);
 563                 break;
 564             case VT_ARRAY|VT_VARIANT:
 565                 array = V_ARRAY(ref.u.v);
 566                 break;
 567             case VT_DISPATCH:
 568                 vbstack_to_dp(ctx, arg_cnt, FALSE, &dp);
 569                 hres = disp_call(ctx->script, V_DISPATCH(v), DISPID_VALUE, &dp, res);
 570                 if(FAILED(hres))
 571                     return hres;
 572                 break;
 573             default:
 574                 FIXME("arguments not implemented\n");
 575                 return E_NOTIMPL;
 576             }
 577
 578             if(!array)
 579                 break;
 580
 581             vbstack_to_dp(ctx, arg_cnt, FALSE, &dp);
 582             hres = array_access(ctx, array, &dp, &v);
 583             if(FAILED(hres))
 584                 return hres;
 585         }
 586
 587         V_VT(res) = VT_BYREF|VT_VARIANT;
 588         V_BYREF(res) = v;
 589         break;
 590     }
 591     case REF_DISP:
 592         vbstack_to_dp(ctx, arg_cnt, FALSE, &dp);
 593         hres = disp_call(ctx->script, ref.u.d.disp, ref.u.d.id, &dp, res);
 594         if(FAILED(hres))
 595             return hres;
 596         break;
 597     case REF_FUNC:
 598         vbstack_to_dp(ctx, arg_cnt, FALSE, &dp);
 599         hres = exec_script(ctx->script, ref.u.f, NULL, &dp, res);
 600         if(FAILED(hres))
 601             return hres;
 602         break;
 603     case REF_OBJ:
 604         if(arg_cnt) {
 605             FIXME("arguments on object\n");
 606             return E_NOTIMPL;
 607         }
 608
 609         if(res) {
 610             IDispatch_AddRef(ref.u.obj);
 611             V_VT(res) = VT_DISPATCH;
 612             V_DISPATCH(res) = ref.u.obj;
 613         }
 614         break;
 615     case REF_NONE:
 616         if(res && !ctx->func->code_ctx->option_explicit && arg_cnt == 0) {
 617             VARIANT v, *new;
 618             VariantInit(&v);
 619             hres = add_dynamic_var(ctx, identifier, FALSE, &v, FALSE, &new);
 620             if(FAILED(hres))
 621                 return hres;
 622             V_VT(res) = VT_BYREF|VT_VARIANT;
 623             V_BYREF(res) = new;
 624             break;
 625         }
 626         FIXME("%s not found\n", debugstr_w(identifier));
 627         return DISP_E_UNKNOWNNAME;
 628     }
 629
 630     stack_popn(ctx, arg_cnt);
 631     return S_OK;
 632 }
 633
 634 static HRESULT interp_icall(exec_ctx_t *ctx)
 635 {
 636     VARIANT v;
 637     HRESULT hres;
 638
 639     TRACE("\n");
 640
 641     hres = do_icall(ctx, &v);
 642     if(FAILED(hres))
 643         return hres;
 644
 645     return stack_push(ctx, &v);
 646 }
 647
 648 static HRESULT interp_icallv(exec_ctx_t *ctx)
 649 {
 650     TRACE("\n");
 651     return do_icall(ctx, NULL);
 652 }
 653
 654 static HRESULT do_mcall(exec_ctx_t *ctx, VARIANT *res)
 655 {
 656     const BSTR identifier = ctx->instr->arg1.bstr;
 657     const unsigned arg_cnt = ctx->instr->arg2.uint;
 658     IDispatch *obj;
 659     DISPPARAMS dp;
 660     DISPID id;
 661     HRESULT hres;
 662
 663     hres = stack_pop_disp(ctx, &obj);
 664     if(FAILED(hres))
 665         return hres;
 666
 667     if(!obj) {
 668         FIXME("NULL obj\n");
 669         return E_FAIL;
 670     }
 671
 672     vbstack_to_dp(ctx, arg_cnt, FALSE, &dp);
 673
 674     hres = disp_get_id(obj, identifier, VBDISP_CALLGET, FALSE, &id);
 675     if(SUCCEEDED(hres))
 676         hres = disp_call(ctx->script, obj, id, &dp, res);
 677     IDispatch_Release(obj);
 678     if(FAILED(hres))
 679         return hres;
 680
 681     stack_popn(ctx, arg_cnt);
 682     return S_OK;
 683 }
 684
 685 static HRESULT interp_mcall(exec_ctx_t *ctx)
 686 {
 687     VARIANT res;
 688     HRESULT hres;
 689
 690     TRACE("\n");
 691
 692     hres = do_mcall(ctx, &res);
 693     if(FAILED(hres))
 694         return hres;
 695
 696     return stack_push(ctx, &res);
 697 }
 698
 699 static HRESULT interp_mcallv(exec_ctx_t *ctx)
 700 {
 701     TRACE("\n");
 702
 703     return do_mcall(ctx, NULL);
 704 }
 705
 706 static HRESULT assign_ident(exec_ctx_t *ctx, BSTR name, DISPPARAMS *dp)
 707 {
 708     ref_t ref;
 709     HRESULT hres;
 710
 711     hres = lookup_identifier(ctx, name, VBDISP_LET, &ref);
 712     if(FAILED(hres))
 713         return hres;
 714
 715     switch(ref.type) {
 716     case REF_VAR: {
 717         VARIANT *v = ref.u.v;
 718
 719         if(V_VT(v) == (VT_VARIANT|VT_BYREF))
 720             v = V_VARIANTREF(v);
 721
 722         if(arg_cnt(dp)) {
 723             SAFEARRAY *array;
 724
 725             if(!(V_VT(v) & VT_ARRAY)) {
 726                 FIXME("array assign on type %d\n", V_VT(v));
 727                 return E_FAIL;
 728             }
 729
 730             switch(V_VT(v)) {
 731             case VT_ARRAY|VT_BYREF|VT_VARIANT:
 732                 array = *V_ARRAYREF(v);
 733                 break;
 734             case VT_ARRAY|VT_VARIANT:
 735                 array = V_ARRAY(v);
 736                 break;
 737             default:
 738                 FIXME("Unsupported array type %x\n", V_VT(v));
 739                 return E_NOTIMPL;
 740             }
 741
 742             if(!array) {
 743                 FIXME("null array\n");
 744                 return E_FAIL;
 745             }
 746
 747             hres = array_access(ctx, array, dp, &v);
 748             if(FAILED(hres))
 749                 return hres;
 750         }else if(V_VT(v) == (VT_ARRAY|VT_BYREF|VT_VARIANT)) {
 751             FIXME("non-array assign\n");
 752             return E_NOTIMPL;
 753         }
 754
 755         hres = VariantCopyInd(v, dp->rgvarg);
 756         break;
 757     }
 758     case REF_DISP:
 759         hres = disp_propput(ctx->script, ref.u.d.disp, ref.u.d.id, dp);
 760         break;
 761     case REF_FUNC:
 762         FIXME("functions not implemented\n");
 763         return E_NOTIMPL;
 764     case REF_OBJ:
 765         FIXME("REF_OBJ\n");
 766         return E_NOTIMPL;
 767     case REF_CONST:
 768         FIXME("REF_CONST\n");
 769         return E_NOTIMPL;
 770     case REF_NONE:
 771         if(ctx->func->code_ctx->option_explicit) {
 772             FIXME("throw exception\n");
 773             hres = E_FAIL;
 774         }else {
 775             if(arg_cnt(dp)) {
 776                 FIXME("arg_cnt %d not supported\n", arg_cnt(dp));
 777                 return E_NOTIMPL;
 778             }
 779
 780             TRACE("creating variable %s\n", debugstr_w(name));
 781             hres = add_dynamic_var(ctx, name, FALSE, dp->rgvarg, FALSE, NULL);
 782         }
 783     }
 784
 785     return hres;
 786 }
 787
 788 static HRESULT interp_assign_ident(exec_ctx_t *ctx)
 789 {
 790     const BSTR arg = ctx->instr->arg1.bstr;
 791     const unsigned arg_cnt = ctx->instr->arg2.uint;
 792     DISPPARAMS dp;
 793     HRESULT hres;
 794
 795     TRACE("%s\n", debugstr_w(arg));
 796
 797     hres = stack_assume_val(ctx, arg_cnt);
 798     if(FAILED(hres))
 799         return hres;
 800
 801     vbstack_to_dp(ctx, arg_cnt, TRUE, &dp);
 802     hres = assign_ident(ctx, arg, &dp);
 803     if(FAILED(hres))
 804         return hres;
 805
 806     stack_popn(ctx, arg_cnt+1);
 807     return S_OK;
 808 }
 809
 810 static HRESULT interp_set_ident(exec_ctx_t *ctx)
 811 {
 812     const BSTR arg = ctx->instr->arg1.bstr;
 813     const unsigned arg_cnt = ctx->instr->arg2.uint;
 814     DISPPARAMS dp;
 815     HRESULT hres;
 816
 817     TRACE("%s\n", debugstr_w(arg));
 818
 819     if(arg_cnt) {
 820         FIXME("arguments not supported\n");
 821         return E_NOTIMPL;
 822     }
 823
 824     hres = stack_assume_disp(ctx, 0, NULL);
 825     if(FAILED(hres))
 826         return hres;
 827
 828     vbstack_to_dp(ctx, 0, TRUE, &dp);
 829     hres = assign_ident(ctx, ctx->instr->arg1.bstr, &dp);
 830     if(FAILED(hres))
 831         return hres;
 832
 833     stack_popn(ctx, 1);
 834     return S_OK;
 835 }
 836
 837 static HRESULT interp_assign_member(exec_ctx_t *ctx)
 838 {
 839     BSTR identifier = ctx->instr->arg1.bstr;
 840     const unsigned arg_cnt = ctx->instr->arg2.uint;
 841     IDispatch *obj;
 842     DISPPARAMS dp;
 843     DISPID id;
 844     HRESULT hres;
 845
 846     TRACE("%s\n", debugstr_w(identifier));
 847
 848     hres = stack_assume_disp(ctx, arg_cnt+1, &obj);
 849     if(FAILED(hres))
 850         return hres;
 851
 852     if(!obj) {
 853         FIXME("NULL obj\n");
 854         return E_FAIL;
 855     }
 856
 857     hres = stack_assume_val(ctx, arg_cnt);
 858     if(FAILED(hres))
 859         return hres;
 860
 861     hres = disp_get_id(obj, identifier, VBDISP_LET, FALSE, &id);
 862     if(SUCCEEDED(hres)) {
 863         vbstack_to_dp(ctx, arg_cnt, TRUE, &dp);
 864         hres = disp_propput(ctx->script, obj, id, &dp);
 865     }
 866     if(FAILED(hres))
 867         return hres;
 868
 869     stack_popn(ctx, arg_cnt+2);
 870     return S_OK;
 871 }
 872
 873 static HRESULT interp_set_member(exec_ctx_t *ctx)
 874 {
 875     BSTR identifier = ctx->instr->arg1.bstr;
 876     const unsigned arg_cnt = ctx->instr->arg2.uint;
 877     IDispatch *obj;
 878     DISPPARAMS dp;
 879     DISPID id;
 880     HRESULT hres;
 881
 882     TRACE("%s\n", debugstr_w(identifier));
 883
 884     if(arg_cnt) {
 885         FIXME("arguments not supported\n");
 886         return E_NOTIMPL;
 887     }
 888
 889     hres = stack_assume_disp(ctx, 1, &obj);
 890     if(FAILED(hres))
 891         return hres;
 892
 893     if(!obj) {
 894         FIXME("NULL obj\n");
 895         return E_FAIL;
 896     }
 897
 898     hres = stack_assume_disp(ctx, 0, NULL);
 899     if(FAILED(hres))
 900         return hres;
 901
 902     hres = disp_get_id(obj, identifier, VBDISP_SET, FALSE, &id);
 903     if(SUCCEEDED(hres)) {
 904         vbstack_to_dp(ctx, arg_cnt, TRUE, &dp);
 905         hres = disp_propput(ctx->script, obj, id, &dp);
 906     }
 907     if(FAILED(hres))
 908         return hres;
 909
 910     stack_popn(ctx, 2);
 911     return S_OK;
 912 }
 913
 914 static HRESULT interp_const(exec_ctx_t *ctx)
 915 {
 916     BSTR arg = ctx->instr->arg1.bstr;
 917     variant_val_t val;
 918     ref_t ref;
 919     HRESULT hres;
 920
 921     TRACE("%s\n", debugstr_w(arg));
 922
 923     assert(ctx->func->type == FUNC_GLOBAL);
 924
 925     hres = lookup_identifier(ctx, arg, VBDISP_CALLGET, &ref);
 926     if(FAILED(hres))
 927         return hres;
 928
 929     if(ref.type != REF_NONE) {
 930         FIXME("%s already defined\n", debugstr_w(arg));
 931         return E_FAIL;
 932     }
 933
 934     hres = stack_pop_val(ctx, &val);
 935     if(FAILED(hres))
 936         return hres;
 937
 938     return add_dynamic_var(ctx, arg, TRUE, val.v, val.owned, NULL);
 939 }
 940
 941 static HRESULT interp_val(exec_ctx_t *ctx)
 942 {
 943     variant_val_t val;
 944     VARIANT v;
 945     HRESULT hres;
 946
 947     TRACE("\n");
 948
 949     hres = stack_pop_val(ctx, &val);
 950     if(FAILED(hres))
 951         return hres;
 952
 953     if(!val.owned) {
 954         V_VT(&v) = VT_EMPTY;
 955         hres = VariantCopy(&v, val.v);
 956         if(FAILED(hres))
 957             return hres;
 958     }
 959
 960     return stack_push(ctx, val.owned ? val.v : &v);
 961 }
 962
 963 static HRESULT interp_pop(exec_ctx_t *ctx)
 964 {
 965     const unsigned n = ctx->instr->arg1.uint;
 966
 967     TRACE("%u\n", n);
 968
 969     stack_popn(ctx, n);
 970     return S_OK;
 971 }
 972
 973 static HRESULT interp_new(exec_ctx_t *ctx)
 974 {
 975     const WCHAR *arg = ctx->instr->arg1.bstr;
 976     class_desc_t *class_desc;
 977     vbdisp_t *obj;
 978     VARIANT v;
 979     HRESULT hres;
 980
 981     static const WCHAR regexpW[] = {'r','e','g','e','x','p',0};
 982
 983     TRACE("%s\n", debugstr_w(arg));
 984
 985     if(!strcmpiW(arg, regexpW)) {
 986         V_VT(&v) = VT_DISPATCH;
 987         hres = create_regexp(&V_DISPATCH(&v));
 988         if(FAILED(hres))
 989             return hres;
 990
 991         return stack_push(ctx, &v);
 992     }
 993
 994     for(class_desc = ctx->script->classes; class_desc; class_desc = class_desc->next) {
 995         if(!strcmpiW(class_desc->name, arg))
 996             break;
 997     }
 998     if(!class_desc) {
 999         FIXME("Class %s not found\n", debugstr_w(arg));
1000         return E_FAIL;
1001     }
1002
1003     hres = create_vbdisp(class_desc, &obj);
1004     if(FAILED(hres))
1005         return hres;
1006
1007     V_VT(&v) = VT_DISPATCH;
1008     V_DISPATCH(&v) = (IDispatch*)&obj->IDispatchEx_iface;
1009     return stack_push(ctx, &v);
1010 }
1011
1012 static HRESULT interp_dim(exec_ctx_t *ctx)
1013 {
1014     const BSTR ident = ctx->instr->arg1.bstr;
1015     const unsigned array_id = ctx->instr->arg2.uint;
1016     const array_desc_t *array_desc;
1017     ref_t ref;
1018     HRESULT hres;
1019
1020     TRACE("%s\n", debugstr_w(ident));
1021
1022     assert(array_id < ctx->func->array_cnt);
1023     if(!ctx->arrays) {
1024         ctx->arrays = heap_alloc_zero(ctx->func->array_cnt * sizeof(SAFEARRAY*));
1025         if(!ctx->arrays)
1026             return E_OUTOFMEMORY;
1027     }
1028
1029     hres = lookup_identifier(ctx, ident, VBDISP_LET, &ref);
1030     if(FAILED(hres)) {
1031         FIXME("lookup %s failed: %08x\n", debugstr_w(ident), hres);
1032         return hres;
1033     }
1034
1035     if(ref.type != REF_VAR) {
1036         FIXME("got ref.type = %d\n", ref.type);
1037         return E_FAIL;
1038     }
1039
1040     if(ctx->arrays[array_id]) {
1041         FIXME("Array already initialized\n");
1042         return E_FAIL;
1043     }
1044
1045     array_desc = ctx->func->array_descs + array_id;
1046     if(array_desc->dim_cnt) {
1047         ctx->arrays[array_id] = SafeArrayCreate(VT_VARIANT, array_desc->dim_cnt, array_desc->bounds);
1048         if(!ctx->arrays[array_id])
1049             return E_OUTOFMEMORY;
1050     }
1051
1052     V_VT(ref.u.v) = VT_ARRAY|VT_BYREF|VT_VARIANT;
1053     V_ARRAYREF(ref.u.v) = ctx->arrays+array_id;
1054     return S_OK;
1055 }
1056
1057 static HRESULT interp_step(exec_ctx_t *ctx)
1058 {
1059     const BSTR ident = ctx->instr->arg2.bstr;
1060     BOOL gteq_zero;
1061     VARIANT zero;
1062     ref_t ref;
1063     HRESULT hres;
1064
1065     TRACE("%s\n", debugstr_w(ident));
1066
1067     V_VT(&zero) = VT_I2;
1068     V_I2(&zero) = 0;
1069     hres = VarCmp(stack_top(ctx, 0), &zero, ctx->script->lcid, 0);
1070     if(FAILED(hres))
1071         return hres;
1072
1073     gteq_zero = hres == VARCMP_GT || hres == VARCMP_EQ;
1074
1075     hres = lookup_identifier(ctx, ident, VBDISP_ANY, &ref);
1076     if(FAILED(hres))
1077         return hres;
1078
1079     if(ref.type != REF_VAR) {
1080         FIXME("%s is not REF_VAR\n", debugstr_w(ident));
1081         return E_FAIL;
1082     }
1083
1084     hres = VarCmp(ref.u.v, stack_top(ctx, 1), ctx->script->lcid, 0);
1085     if(FAILED(hres))
1086         return hres;
1087
1088     if(hres == VARCMP_EQ || hres == (gteq_zero ? VARCMP_LT : VARCMP_GT)) {
1089         ctx->instr++;
1090     }else {
1091         stack_popn(ctx, 2);
1092         instr_jmp(ctx, ctx->instr->arg1.uint);
1093     }
1094     return S_OK;
1095 }
1096
1097 static HRESULT interp_newenum(exec_ctx_t *ctx)
1098 {
1099     variant_val_t v;
1100     VARIANT *r;
1101     HRESULT hres;
1102
1103     TRACE("\n");
1104
1105     stack_pop_deref(ctx, &v);
1106     assert(V_VT(stack_top(ctx, 0)) == VT_EMPTY);
1107     r = stack_top(ctx, 0);
1108
1109     switch(V_VT(v.v)) {
1110     case VT_DISPATCH|VT_BYREF:
1111     case VT_DISPATCH: {
1112         IEnumVARIANT *iter;
1113         DISPPARAMS dp = {0};
1114         VARIANT iterv;
1115
1116         hres = disp_call(ctx->script, V_ISBYREF(v.v) ? *V_DISPATCHREF(v.v) : V_DISPATCH(v.v), DISPID_NEWENUM, &dp, &iterv);
1117         release_val(&v);
1118         if(FAILED(hres))
1119             return hres;
1120
1121         if(V_VT(&iterv) != VT_UNKNOWN && V_VT(&iterv) != VT_DISPATCH) {
1122             FIXME("Unsupported iterv %s\n", debugstr_variant(&iterv));
1123             VariantClear(&iterv);
1124             return hres;
1125         }
1126
1127         hres = IUnknown_QueryInterface(V_UNKNOWN(&iterv), &IID_IEnumVARIANT, (void**)&iter);
1128         IUnknown_Release(V_UNKNOWN(&iterv));
1129         if(FAILED(hres)) {
1130             FIXME("Could not get IEnumVARIANT iface: %08x\n", hres);
1131             return hres;
1132         }
1133
1134         V_VT(r) = VT_UNKNOWN;
1135         V_UNKNOWN(r) = (IUnknown*)iter;
1136         break;
1137     }
1138     default:
1139         FIXME("Unsupported for %s\n", debugstr_variant(v.v));
1140         release_val(&v);
1141         return E_NOTIMPL;
1142     }
1143
1144     return S_OK;
1145 }
1146
1147 static HRESULT interp_enumnext(exec_ctx_t *ctx)
1148 {
1149     const unsigned loop_end = ctx->instr->arg1.uint;
1150     const BSTR ident = ctx->instr->arg2.bstr;
1151     VARIANT v;
1152     DISPPARAMS dp = {&v, &propput_dispid, 1, 1};
1153     IEnumVARIANT *iter;
1154     BOOL do_continue;
1155     HRESULT hres;
1156
1157     TRACE("\n");
1158
1159     if(V_VT(stack_top(ctx, 0)) == VT_EMPTY) {
1160         FIXME("uninitialized\n");
1161         return E_FAIL;
1162     }
1163
1164     assert(V_VT(stack_top(ctx, 0)) == VT_UNKNOWN);
1165     iter = (IEnumVARIANT*)V_UNKNOWN(stack_top(ctx, 0));
1166
1167     V_VT(&v) = VT_EMPTY;
1168     hres = IEnumVARIANT_Next(iter, 1, &v, NULL);
1169     if(FAILED(hres))
1170         return hres;
1171
1172     do_continue = hres == S_OK;
1173     hres = assign_ident(ctx, ident, &dp);
1174     VariantClear(&v);
1175     if(FAILED(hres))
1176         return hres;
1177
1178     if(do_continue) {
1179         ctx->instr++;
1180     }else {
1181         stack_pop(ctx);
1182         instr_jmp(ctx, loop_end);
1183     }
1184     return S_OK;
1185 }
1186
1187 static HRESULT interp_jmp(exec_ctx_t *ctx)
1188 {
1189     const unsigned arg = ctx->instr->arg1.uint;
1190
1191     TRACE("%u\n", arg);
1192
1193     instr_jmp(ctx, arg);
1194     return S_OK;
1195 }
1196
1197 static HRESULT interp_jmp_false(exec_ctx_t *ctx)
1198 {
1199     const unsigned arg = ctx->instr->arg1.uint;
1200     HRESULT hres;
1201     BOOL b;
1202
1203     TRACE("%u\n", arg);
1204
1205     hres = stack_pop_bool(ctx, &b);
1206     if(FAILED(hres))
1207         return hres;
1208
1209     if(b)
1210         ctx->instr++;
1211     else
1212         instr_jmp(ctx, ctx->instr->arg1.uint);
1213     return S_OK;
1214 }
1215
1216 static HRESULT interp_jmp_true(exec_ctx_t *ctx)
1217 {
1218     const unsigned arg = ctx->instr->arg1.uint;
1219     HRESULT hres;
1220     BOOL b;
1221
1222     TRACE("%u\n", arg);
1223
1224     hres = stack_pop_bool(ctx, &b);
1225     if(FAILED(hres))
1226         return hres;
1227
1228     if(b)
1229         instr_jmp(ctx, ctx->instr->arg1.uint);
1230     else
1231         ctx->instr++;
1232     return S_OK;
1233 }
1234
1235 static HRESULT interp_ret(exec_ctx_t *ctx)
1236 {
1237     TRACE("\n");
1238
1239     ctx->instr = NULL;
1240     return S_OK;
1241 }
1242
1243 static HRESULT interp_stop(exec_ctx_t *ctx)
1244 {
1245     WARN("\n");
1246
1247     /* NOTE: this should have effect in debugging mode (that we don't support yet) */
1248     return S_OK;
1249 }
1250
1251 static HRESULT interp_me(exec_ctx_t *ctx)
1252 {
1253     VARIANT v;
1254
1255     TRACE("\n");
1256
1257     IDispatch_AddRef(ctx->this_obj);
1258     V_VT(&v) = VT_DISPATCH;
1259     V_DISPATCH(&v) = ctx->this_obj;
1260     return stack_push(ctx, &v);
1261 }
1262
1263 static HRESULT interp_bool(exec_ctx_t *ctx)
1264 {
1265     const VARIANT_BOOL arg = ctx->instr->arg1.lng;
1266     VARIANT v;
1267
1268     TRACE("%s\n", arg ? "true" : "false");
1269
1270     V_VT(&v) = VT_BOOL;
1271     V_BOOL(&v) = arg;
1272     return stack_push(ctx, &v);
1273 }
1274
1275 static HRESULT interp_errmode(exec_ctx_t *ctx)
1276 {
1277     const int err_mode = ctx->instr->arg1.uint;
1278
1279     TRACE("%d\n", err_mode);
1280
1281     ctx->resume_next = err_mode;
1282     ctx->script->err_number = S_OK;
1283     return S_OK;
1284 }
1285
1286 static HRESULT interp_string(exec_ctx_t *ctx)
1287 {
1288     VARIANT v;
1289
1290     TRACE("\n");
1291
1292     V_VT(&v) = VT_BSTR;
1293     V_BSTR(&v) = SysAllocString(ctx->instr->arg1.str);
1294     if(!V_BSTR(&v))
1295         return E_OUTOFMEMORY;
1296
1297     return stack_push(ctx, &v);
1298 }
1299
1300 static HRESULT interp_long(exec_ctx_t *ctx)
1301 {
1302     const LONG arg = ctx->instr->arg1.lng;
1303     VARIANT v;
1304
1305     TRACE("%d\n", arg);
1306
1307     V_VT(&v) = VT_I4;
1308     V_I4(&v) = arg;
1309     return stack_push(ctx, &v);
1310 }
1311
1312 static HRESULT interp_short(exec_ctx_t *ctx)
1313 {
1314     const LONG arg = ctx->instr->arg1.lng;
1315     VARIANT v;
1316
1317     TRACE("%d\n", arg);
1318
1319     V_VT(&v) = VT_I2;
1320     V_I2(&v) = arg;
1321     return stack_push(ctx, &v);
1322 }
1323
1324 static HRESULT interp_double(exec_ctx_t *ctx)
1325 {
1326     const DOUBLE *arg = ctx->instr->arg1.dbl;
1327     VARIANT v;
1328
1329     TRACE("%lf\n", *arg);
1330
1331     V_VT(&v) = VT_R8;
1332     V_R8(&v) = *arg;
1333     return stack_push(ctx, &v);
1334 }
1335
1336 static HRESULT interp_empty(exec_ctx_t *ctx)
1337 {
1338     VARIANT v;
1339
1340     TRACE("\n");
1341
1342     V_VT(&v) = VT_EMPTY;
1343     return stack_push(ctx, &v);
1344 }
1345
1346 static HRESULT interp_null(exec_ctx_t *ctx)
1347 {
1348     TRACE("\n");
1349     return stack_push_null(ctx);
1350 }
1351
1352 static HRESULT interp_nothing(exec_ctx_t *ctx)
1353 {
1354     VARIANT v;
1355
1356     TRACE("\n");
1357
1358     V_VT(&v) = VT_DISPATCH;
1359     V_DISPATCH(&v) = NULL;
1360     return stack_push(ctx, &v);
1361 }
1362
1363 static HRESULT interp_not(exec_ctx_t *ctx)
1364 {
1365     variant_val_t val;
1366     VARIANT v;
1367     HRESULT hres;
1368
1369     TRACE("\n");
1370
1371     hres = stack_pop_val(ctx, &val);
1372     if(FAILED(hres))
1373         return hres;
1374
1375     hres = VarNot(val.v, &v);
1376     release_val(&val);
1377     if(FAILED(hres))
1378         return hres;
1379
1380     return stack_push(ctx, &v);
1381 }
1382
1383 static HRESULT interp_and(exec_ctx_t *ctx)
1384 {
1385     variant_val_t r, l;
1386     VARIANT v;
1387     HRESULT hres;
1388
1389     TRACE("\n");
1390
1391     hres = stack_pop_val(ctx, &r);
1392     if(FAILED(hres))
1393         return hres;
1394
1395     hres = stack_pop_val(ctx, &l);
1396     if(SUCCEEDED(hres)) {
1397         hres = VarAnd(l.v, r.v, &v);
1398         release_val(&l);
1399     }
1400     release_val(&r);
1401     if(FAILED(hres))
1402         return hres;
1403
1404     return stack_push(ctx, &v);
1405 }
1406
1407 static HRESULT interp_or(exec_ctx_t *ctx)
1408 {
1409     variant_val_t r, l;
1410     VARIANT v;
1411     HRESULT hres;
1412
1413     TRACE("\n");
1414
1415     hres = stack_pop_val(ctx, &r);
1416     if(FAILED(hres))
1417         return hres;
1418
1419     hres = stack_pop_val(ctx, &l);
1420     if(SUCCEEDED(hres)) {
1421         hres = VarOr(l.v, r.v, &v);
1422         release_val(&l);
1423     }
1424     release_val(&r);
1425     if(FAILED(hres))
1426         return hres;
1427
1428     return stack_push(ctx, &v);
1429 }
1430
1431 static HRESULT interp_xor(exec_ctx_t *ctx)
1432 {
1433     variant_val_t r, l;
1434     VARIANT v;
1435     HRESULT hres;
1436
1437     TRACE("\n");
1438
1439     hres = stack_pop_val(ctx, &r);
1440     if(FAILED(hres))
1441         return hres;
1442
1443     hres = stack_pop_val(ctx, &l);
1444     if(SUCCEEDED(hres)) {
1445         hres = VarXor(l.v, r.v, &v);
1446         release_val(&l);
1447     }
1448     release_val(&r);
1449     if(FAILED(hres))
1450         return hres;
1451
1452     return stack_push(ctx, &v);
1453 }
1454
1455 static HRESULT interp_eqv(exec_ctx_t *ctx)
1456 {
1457     variant_val_t r, l;
1458     VARIANT v;
1459     HRESULT hres;
1460
1461     TRACE("\n");
1462
1463     hres = stack_pop_val(ctx, &r);
1464     if(FAILED(hres))
1465         return hres;
1466
1467     hres = stack_pop_val(ctx, &l);
1468     if(SUCCEEDED(hres)) {
1469         hres = VarEqv(l.v, r.v, &v);
1470         release_val(&l);
1471     }
1472     release_val(&r);
1473     if(FAILED(hres))
1474         return hres;
1475
1476     return stack_push(ctx, &v);
1477 }
1478
1479 static HRESULT interp_imp(exec_ctx_t *ctx)
1480 {
1481     variant_val_t r, l;
1482     VARIANT v;
1483     HRESULT hres;
1484
1485     TRACE("\n");
1486
1487     hres = stack_pop_val(ctx, &r);
1488     if(FAILED(hres))
1489         return hres;
1490
1491     hres = stack_pop_val(ctx, &l);
1492     if(SUCCEEDED(hres)) {
1493         hres = VarImp(l.v, r.v, &v);
1494         release_val(&l);
1495     }
1496     release_val(&r);
1497     if(FAILED(hres))
1498         return hres;
1499
1500     return stack_push(ctx, &v);
1501 }
1502
1503 static HRESULT var_cmp(exec_ctx_t *ctx, VARIANT *l, VARIANT *r)
1504 {
1505     TRACE("%s %s\n", debugstr_variant(l), debugstr_variant(r));
1506
1507     /* FIXME: Fix comparing string to number */
1508
1509     return VarCmp(l, r, ctx->script->lcid, 0);
1510  }
1511
1512 static HRESULT cmp_oper(exec_ctx_t *ctx)
1513 {
1514     variant_val_t l, r;
1515     HRESULT hres;
1516
1517     hres = stack_pop_val(ctx, &r);
1518     if(FAILED(hres))
1519         return hres;
1520
1521     hres = stack_pop_val(ctx, &l);
1522     if(SUCCEEDED(hres)) {
1523         hres = var_cmp(ctx, l.v, r.v);
1524         release_val(&l);
1525     }
1526
1527     release_val(&r);
1528     return hres;
1529 }
1530
1531 static HRESULT interp_equal(exec_ctx_t *ctx)
1532 {
1533     VARIANT v;
1534     HRESULT hres;
1535
1536     TRACE("\n");
1537
1538     hres = cmp_oper(ctx);
1539     if(FAILED(hres))
1540         return hres;
1541     if(hres == VARCMP_NULL)
1542         return stack_push_null(ctx);
1543
1544     V_VT(&v) = VT_BOOL;
1545     V_BOOL(&v) = hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
1546     return stack_push(ctx, &v);
1547 }
1548
1549 static HRESULT interp_nequal(exec_ctx_t *ctx)
1550 {
1551     VARIANT v;
1552     HRESULT hres;
1553
1554     TRACE("\n");
1555
1556     hres = cmp_oper(ctx);
1557     if(FAILED(hres))
1558         return hres;
1559     if(hres == VARCMP_NULL)
1560         return stack_push_null(ctx);
1561
1562     V_VT(&v) = VT_BOOL;
1563     V_BOOL(&v) = hres != VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
1564     return stack_push(ctx, &v);
1565 }
1566
1567 static HRESULT interp_gt(exec_ctx_t *ctx)
1568 {
1569     VARIANT v;
1570     HRESULT hres;
1571
1572     TRACE("\n");
1573
1574     hres = cmp_oper(ctx);
1575     if(FAILED(hres))
1576         return hres;
1577     if(hres == VARCMP_NULL)
1578         return stack_push_null(ctx);
1579
1580     V_VT(&v) = VT_BOOL;
1581     V_BOOL(&v) = hres == VARCMP_GT ? VARIANT_TRUE : VARIANT_FALSE;
1582     return stack_push(ctx, &v);
1583 }
1584
1585 static HRESULT interp_gteq(exec_ctx_t *ctx)
1586 {
1587     VARIANT v;
1588     HRESULT hres;
1589
1590     TRACE("\n");
1591
1592     hres = cmp_oper(ctx);
1593     if(FAILED(hres))
1594         return hres;
1595     if(hres == VARCMP_NULL)
1596         return stack_push_null(ctx);
1597
1598     V_VT(&v) = VT_BOOL;
1599     V_BOOL(&v) = hres == VARCMP_GT || hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
1600     return stack_push(ctx, &v);
1601 }
1602
1603 static HRESULT interp_lt(exec_ctx_t *ctx)
1604 {
1605     VARIANT v;
1606     HRESULT hres;
1607
1608     TRACE("\n");
1609
1610     hres = cmp_oper(ctx);
1611     if(FAILED(hres))
1612         return hres;
1613     if(hres == VARCMP_NULL)
1614         return stack_push_null(ctx);
1615
1616     V_VT(&v) = VT_BOOL;
1617     V_BOOL(&v) = hres == VARCMP_LT ? VARIANT_TRUE : VARIANT_FALSE;
1618     return stack_push(ctx, &v);
1619 }
1620
1621 static HRESULT interp_lteq(exec_ctx_t *ctx)
1622 {
1623     VARIANT v;
1624     HRESULT hres;
1625
1626     TRACE("\n");
1627
1628     hres = cmp_oper(ctx);
1629     if(FAILED(hres))
1630         return hres;
1631     if(hres == VARCMP_NULL)
1632         return stack_push_null(ctx);
1633
1634     V_VT(&v) = VT_BOOL;
1635     V_BOOL(&v) = hres == VARCMP_LT || hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
1636     return stack_push(ctx, &v);
1637 }
1638
1639 static HRESULT interp_case(exec_ctx_t *ctx)
1640 {
1641     const unsigned arg = ctx->instr->arg1.uint;
1642     variant_val_t v;
1643     HRESULT hres;
1644
1645     TRACE("%d\n", arg);
1646
1647     hres = stack_pop_val(ctx, &v);
1648     if(FAILED(hres))
1649         return hres;
1650
1651     hres = var_cmp(ctx, stack_top(ctx, 0), v.v);
1652     release_val(&v);
1653     if(FAILED(hres))
1654         return hres;
1655
1656     if(hres == VARCMP_EQ) {
1657         stack_popn(ctx, 1);
1658         instr_jmp(ctx, arg);
1659     }else {
1660         ctx->instr++;
1661     }
1662
1663     return S_OK;
1664 }
1665
1666 static HRESULT disp_cmp(IDispatch *disp1, IDispatch *disp2, VARIANT_BOOL *ret)
1667 {
1668     IObjectIdentity *identity;
1669     IUnknown *unk1, *unk2;
1670     HRESULT hres;
1671
1672     if(disp1 == disp2) {
1673         *ret = VARIANT_TRUE;
1674         return S_OK;
1675     }
1676
1677     if(!disp1 || !disp2) {
1678         *ret = VARIANT_FALSE;
1679         return S_OK;
1680     }
1681
1682     hres = IDispatch_QueryInterface(disp1, &IID_IUnknown, (void**)&unk1);
1683     if(FAILED(hres))
1684         return hres;
1685
1686     hres = IDispatch_QueryInterface(disp2, &IID_IUnknown, (void**)&unk2);
1687     if(FAILED(hres)) {
1688         IUnknown_Release(unk1);
1689         return hres;
1690     }
1691
1692     if(unk1 == unk2) {
1693         *ret = VARIANT_TRUE;
1694     }else {
1695         hres = IUnknown_QueryInterface(unk1, &IID_IObjectIdentity, (void**)&identity);
1696         if(SUCCEEDED(hres)) {
1697             hres = IObjectIdentity_IsEqualObject(identity, unk2);
1698             IObjectIdentity_Release(identity);
1699             *ret = hres == S_OK ? VARIANT_TRUE : VARIANT_FALSE;
1700         }else {
1701             *ret = VARIANT_FALSE;
1702         }
1703     }
1704
1705     IUnknown_Release(unk1);
1706     IUnknown_Release(unk2);
1707     return S_OK;
1708 }
1709
1710 static HRESULT interp_is(exec_ctx_t *ctx)
1711 {
1712     IDispatch *l, *r;
1713     VARIANT v;
1714     HRESULT hres;
1715
1716     TRACE("\n");
1717
1718     hres = stack_pop_disp(ctx, &r);
1719     if(FAILED(hres))
1720         return hres;
1721
1722     hres = stack_pop_disp(ctx, &l);
1723     if(SUCCEEDED(hres)) {
1724         V_VT(&v) = VT_BOOL;
1725         hres = disp_cmp(l, r, &V_BOOL(&v));
1726         if(l)
1727             IDispatch_Release(l);
1728     }
1729     if(r)
1730         IDispatch_Release(r);
1731     if(FAILED(hres))
1732         return hres;
1733
1734     return stack_push(ctx, &v);
1735 }
1736
1737 static HRESULT interp_concat(exec_ctx_t *ctx)
1738 {
1739     variant_val_t r, l;
1740     VARIANT v;
1741     HRESULT hres;
1742
1743     TRACE("\n");
1744
1745     hres = stack_pop_val(ctx, &r);
1746     if(FAILED(hres))
1747         return hres;
1748
1749     hres = stack_pop_val(ctx, &l);
1750     if(SUCCEEDED(hres)) {
1751         hres = VarCat(l.v, r.v, &v);
1752         release_val(&l);
1753     }
1754     release_val(&r);
1755     if(FAILED(hres))
1756         return hres;
1757
1758     return stack_push(ctx, &v);
1759 }
1760
1761 static HRESULT interp_add(exec_ctx_t *ctx)
1762 {
1763     variant_val_t r, l;
1764     VARIANT v;
1765     HRESULT hres;
1766
1767     TRACE("\n");
1768
1769     hres = stack_pop_val(ctx, &r);
1770     if(FAILED(hres))
1771         return hres;
1772
1773     hres = stack_pop_val(ctx, &l);
1774     if(SUCCEEDED(hres)) {
1775         hres = VarAdd(l.v, r.v, &v);
1776         release_val(&l);
1777     }
1778     release_val(&r);
1779     if(FAILED(hres))
1780         return hres;
1781
1782     return stack_push(ctx, &v);
1783 }
1784
1785 static HRESULT interp_sub(exec_ctx_t *ctx)
1786 {
1787     variant_val_t r, l;
1788     VARIANT v;
1789     HRESULT hres;
1790
1791     TRACE("\n");
1792
1793     hres = stack_pop_val(ctx, &r);
1794     if(FAILED(hres))
1795         return hres;
1796
1797     hres = stack_pop_val(ctx, &l);
1798     if(SUCCEEDED(hres)) {
1799         hres = VarSub(l.v, r.v, &v);
1800         release_val(&l);
1801     }
1802     release_val(&r);
1803     if(FAILED(hres))
1804         return hres;
1805
1806     return stack_push(ctx, &v);
1807 }
1808
1809 static HRESULT interp_mod(exec_ctx_t *ctx)
1810 {
1811     variant_val_t r, l;
1812     VARIANT v;
1813     HRESULT hres;
1814
1815     TRACE("\n");
1816
1817     hres = stack_pop_val(ctx, &r);
1818     if(FAILED(hres))
1819         return hres;
1820
1821     hres = stack_pop_val(ctx, &l);
1822     if(SUCCEEDED(hres)) {
1823         hres = VarMod(l.v, r.v, &v);
1824         release_val(&l);
1825     }
1826     release_val(&r);
1827     if(FAILED(hres))
1828         return hres;
1829
1830     return stack_push(ctx, &v);
1831 }
1832
1833 static HRESULT interp_idiv(exec_ctx_t *ctx)
1834 {
1835     variant_val_t r, l;
1836     VARIANT v;
1837     HRESULT hres;
1838
1839     TRACE("\n");
1840
1841     hres = stack_pop_val(ctx, &r);
1842     if(FAILED(hres))
1843         return hres;
1844
1845     hres = stack_pop_val(ctx, &l);
1846     if(SUCCEEDED(hres)) {
1847         hres = VarIdiv(l.v, r.v, &v);
1848         release_val(&l);
1849     }
1850     release_val(&r);
1851     if(FAILED(hres))
1852         return hres;
1853
1854     return stack_push(ctx, &v);
1855 }
1856
1857 static HRESULT interp_div(exec_ctx_t *ctx)
1858 {
1859     variant_val_t r, l;
1860     VARIANT v;
1861     HRESULT hres;
1862
1863     TRACE("\n");
1864
1865     hres = stack_pop_val(ctx, &r);
1866     if(FAILED(hres))
1867         return hres;
1868
1869     hres = stack_pop_val(ctx, &l);
1870     if(SUCCEEDED(hres)) {
1871         hres = VarDiv(l.v, r.v, &v);
1872         release_val(&l);
1873     }
1874     release_val(&r);
1875     if(FAILED(hres))
1876         return hres;
1877
1878     return stack_push(ctx, &v);
1879 }
1880
1881 static HRESULT interp_mul(exec_ctx_t *ctx)
1882 {
1883     variant_val_t r, l;
1884     VARIANT v;
1885     HRESULT hres;
1886
1887     TRACE("\n");
1888
1889     hres = stack_pop_val(ctx, &r);
1890     if(FAILED(hres))
1891         return hres;
1892
1893     hres = stack_pop_val(ctx, &l);
1894     if(SUCCEEDED(hres)) {
1895         hres = VarMul(l.v, r.v, &v);
1896         release_val(&l);
1897     }
1898     release_val(&r);
1899     if(FAILED(hres))
1900         return hres;
1901
1902     return stack_push(ctx, &v);
1903 }
1904
1905 static HRESULT interp_exp(exec_ctx_t *ctx)
1906 {
1907     variant_val_t r, l;
1908     VARIANT v;
1909     HRESULT hres;
1910
1911     TRACE("\n");
1912
1913     hres = stack_pop_val(ctx, &r);
1914     if(FAILED(hres))
1915         return hres;
1916
1917     hres = stack_pop_val(ctx, &l);
1918     if(SUCCEEDED(hres)) {
1919         hres = VarPow(l.v, r.v, &v);
1920         release_val(&l);
1921     }
1922     release_val(&r);
1923     if(FAILED(hres))
1924         return hres;
1925
1926     return stack_push(ctx, &v);
1927 }
1928
1929 static HRESULT interp_neg(exec_ctx_t *ctx)
1930 {
1931     variant_val_t val;
1932     VARIANT v;
1933     HRESULT hres;
1934
1935     hres = stack_pop_val(ctx, &val);
1936     if(FAILED(hres))
1937         return hres;
1938
1939     hres = VarNeg(val.v, &v);
1940     release_val(&val);
1941     if(FAILED(hres))
1942         return hres;
1943
1944     return stack_push(ctx, &v);
1945 }
1946
1947 static HRESULT interp_incc(exec_ctx_t *ctx)
1948 {
1949     const BSTR ident = ctx->instr->arg1.bstr;
1950     VARIANT v;
1951     ref_t ref;
1952     HRESULT hres;
1953
1954     TRACE("\n");
1955
1956     hres = lookup_identifier(ctx, ident, VBDISP_LET, &ref);
1957     if(FAILED(hres))
1958         return hres;
1959
1960     if(ref.type != REF_VAR) {
1961         FIXME("ref.type is not REF_VAR\n");
1962         return E_FAIL;
1963     }
1964
1965     hres = VarAdd(stack_top(ctx, 0), ref.u.v, &v);
1966     if(FAILED(hres))
1967         return hres;
1968
1969     VariantClear(ref.u.v);
1970     *ref.u.v = v;
1971     return S_OK;
1972 }
1973
1974 static HRESULT interp_catch(exec_ctx_t *ctx)
1975 {
1976     /* Nothing to do here, the OP is for unwinding only. */
1977     return S_OK;
1978 }
1979
1980 static const instr_func_t op_funcs[] = {
1981 #define X(x,n,a,b) interp_ ## x,
1982 OP_LIST
1983 #undef X
1984 };
1985
1986 static const unsigned op_move[] = {
1987 #define X(x,n,a,b) n,
1988 OP_LIST
1989 #undef X
1990 };
1991
1992 void release_dynamic_vars(dynamic_var_t *var)
1993 {
1994     while(var) {
1995         VariantClear(&var->v);
1996         var = var->next;
1997     }
1998 }
1999
2000 static void release_exec(exec_ctx_t *ctx)
2001 {
2002     unsigned i;
2003
2004     VariantClear(&ctx->ret_val);
2005     release_dynamic_vars(ctx->dynamic_vars);
2006
2007     if(ctx->this_obj)
2008         IDispatch_Release(ctx->this_obj);
2009
2010     if(ctx->args) {
2011         for(i=0; i < ctx->func->arg_cnt; i++)
2012             VariantClear(ctx->args+i);
2013     }
2014
2015     if(ctx->vars) {
2016         for(i=0; i < ctx->func->var_cnt; i++)
2017             VariantClear(ctx->vars+i);
2018     }
2019
2020     if(ctx->arrays) {
2021         for(i=0; i < ctx->func->var_cnt; i++) {
2022             if(ctx->arrays[i])
2023                 SafeArrayDestroy(ctx->arrays[i]);
2024         }
2025         heap_free(ctx->arrays);
2026     }
2027
2028     heap_pool_free(&ctx->heap);
2029     heap_free(ctx->args);
2030     heap_free(ctx->vars);
2031     heap_free(ctx->stack);
2032 }
2033
2034 HRESULT exec_script(script_ctx_t *ctx, function_t *func, vbdisp_t *vbthis, DISPPARAMS *dp, VARIANT *res)
2035 {
2036     exec_ctx_t exec = {func->code_ctx};
2037     vbsop_t op;
2038     HRESULT hres = S_OK;
2039
2040     exec.code = func->code_ctx;
2041
2042     if(dp ? func->arg_cnt != arg_cnt(dp) : func->arg_cnt) {
2043         FIXME("wrong arg_cnt %d, expected %d\n", dp ? arg_cnt(dp) : 0, func->arg_cnt);
2044         return E_FAIL;
2045     }
2046
2047     heap_pool_init(&exec.heap);
2048
2049     if(func->arg_cnt) {
2050         VARIANT *v;
2051         unsigned i;
2052
2053         exec.args = heap_alloc_zero(func->arg_cnt * sizeof(VARIANT));
2054         if(!exec.args) {
2055             release_exec(&exec);
2056             return E_OUTOFMEMORY;
2057         }
2058
2059         for(i=0; i < func->arg_cnt; i++) {
2060             v = get_arg(dp, i);
2061             if(V_VT(v) == (VT_VARIANT|VT_BYREF)) {
2062                 if(func->args[i].by_ref)
2063                     exec.args[i] = *v;
2064                 else
2065                     hres = VariantCopyInd(exec.args+i, V_VARIANTREF(v));
2066             }else {
2067                 hres = VariantCopyInd(exec.args+i, v);
2068             }
2069             if(FAILED(hres)) {
2070                 release_exec(&exec);
2071                 return hres;
2072             }
2073         }
2074     }else {
2075         exec.args = NULL;
2076     }
2077
2078     if(func->var_cnt) {
2079         exec.vars = heap_alloc_zero(func->var_cnt * sizeof(VARIANT));
2080         if(!exec.vars) {
2081             release_exec(&exec);
2082             return E_OUTOFMEMORY;
2083         }
2084     }else {
2085         exec.vars = NULL;
2086     }
2087
2088     exec.stack_size = 16;
2089     exec.top = 0;
2090     exec.stack = heap_alloc(exec.stack_size * sizeof(VARIANT));
2091     if(!exec.stack) {
2092         release_exec(&exec);
2093         return E_OUTOFMEMORY;
2094     }
2095
2096     if(vbthis) {
2097         exec.this_obj = (IDispatch*)&vbthis->IDispatchEx_iface;
2098         exec.vbthis = vbthis;
2099     }else if (ctx->host_global) {
2100         exec.this_obj = ctx->host_global;
2101     }else {
2102         exec.this_obj = (IDispatch*)&ctx->script_obj->IDispatchEx_iface;
2103     }
2104     IDispatch_AddRef(exec.this_obj);
2105
2106     exec.instr = exec.code->instrs + func->code_off;
2107     exec.script = ctx;
2108     exec.func = func;
2109
2110     while(exec.instr) {
2111         op = exec.instr->op;
2112         hres = op_funcs[op](&exec);
2113         if(FAILED(hres)) {
2114             ctx->err_number = hres = map_hres(hres);
2115
2116             if(exec.resume_next) {
2117                 unsigned stack_off;
2118
2119                 WARN("Failed %08x in resume next mode\n", hres);
2120
2121                 /*
2122                  * Unwinding here is simple. We need to find the next OP_catch, which contains
2123                  * information about expected stack size and jump offset on error. Generated
2124                  * bytecode needs to guarantee, that simple jump and stack adjustment will
2125                  * guarantee proper execution continuation.
2126                  */
2127                 while((++exec.instr)->op != OP_catch);
2128
2129                 TRACE("unwind jmp %d stack_off %d\n", exec.instr->arg1.uint, exec.instr->arg2.uint);
2130
2131                 stack_off = exec.instr->arg2.uint;
2132                 instr_jmp(&exec, exec.instr->arg1.uint);
2133
2134                 if(exec.top > stack_off) {
2135                     stack_popn(&exec, exec.top-stack_off);
2136                 }else if(exec.top < stack_off) {
2137                     VARIANT v;
2138
2139                     V_VT(&v) = VT_EMPTY;
2140                     while(exec.top < stack_off) {
2141                         hres = stack_push(&exec, &v);
2142                         if(FAILED(hres))
2143                             break;
2144                     }
2145                 }
2146
2147                 continue;
2148             }else {
2149                 WARN("Failed %08x\n", hres);
2150                 stack_popn(&exec, exec.top);
2151                 break;
2152             }
2153         }
2154
2155         exec.instr += op_move[op];
2156     }
2157
2158     assert(!exec.top);
2159     if(func->type != FUNC_FUNCTION && func->type != FUNC_PROPGET && func->type != FUNC_DEFGET)
2160         assert(V_VT(&exec.ret_val) == VT_EMPTY);
2161
2162     if(SUCCEEDED(hres) && res) {
2163         *res = exec.ret_val;
2164         V_VT(&exec.ret_val) = VT_EMPTY;
2165     }
2166
2167     release_exec(&exec);
2168     return hres;
2169 }