2 * Copyright 2011 Jacek Caban for CodeWeavers
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.
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.
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
23 #include "wine/debug.h"
25 WINE_DEFAULT_DEBUG_CHANNEL(vbscript);
45 typedef HRESULT (*instr_func_t)(exec_ctx_t*);
72 static BOOL lookup_dynamic_vars(dynamic_var_t *var, const WCHAR *name, ref_t *ref)
75 if(!strcmpiW(var->name, name)) {
87 static HRESULT lookup_identifier(exec_ctx_t *ctx, BSTR name, vbdisp_invoke_type_t invoke_type, ref_t *ref)
95 if(invoke_type == VBDISP_LET
96 && (ctx->func->type == FUNC_FUNCTION || ctx->func->type == FUNC_PROPGET || ctx->func->type == FUNC_DEFGET)
97 && !strcmpiW(name, ctx->func->name)) {
99 ref->u.v = &ctx->ret_val;
103 for(i=0; i < ctx->func->var_cnt; i++) {
104 if(!strcmpiW(ctx->func->vars[i].name, name)) {
106 ref->u.v = ctx->vars+i;
111 for(i=0; i < ctx->func->arg_cnt; i++) {
112 if(!strcmpiW(ctx->func->args[i].name, name)) {
114 ref->u.v = ctx->args+i;
119 hres = disp_get_id(ctx->this_obj, name, invoke_type, TRUE, &id);
120 if(SUCCEEDED(hres)) {
121 ref->type = REF_DISP;
122 ref->u.d.disp = ctx->this_obj;
127 if(lookup_dynamic_vars(ctx->script->global_vars, name, ref))
130 for(func = ctx->script->global_funcs; func; func = func->next) {
131 if(!strcmpiW(func->name, name)) {
132 ref->type = REF_FUNC;
138 LIST_FOR_EACH_ENTRY(item, &ctx->script->named_items, named_item_t, entry) {
139 if((item->flags & SCRIPTITEM_GLOBALMEMBERS) && item->disp != ctx->this_obj) {
140 hres = disp_get_id(item->disp, name, invoke_type, FALSE, &id);
141 if(SUCCEEDED(hres)) {
142 ref->type = REF_DISP;
143 ref->u.d.disp = item->disp;
150 if(!ctx->func->code_ctx->option_explicit)
151 FIXME("create an attempt to set\n");
153 ref->type = REF_NONE;
157 static inline VARIANT *stack_pop(exec_ctx_t *ctx)
160 return ctx->stack + --ctx->top;
163 static HRESULT stack_push(exec_ctx_t *ctx, VARIANT *v)
165 if(ctx->stack_size == ctx->top) {
168 new_stack = heap_realloc(ctx->stack, ctx->stack_size*2);
171 return E_OUTOFMEMORY;
174 ctx->stack = new_stack;
175 ctx->stack_size *= 2;
178 ctx->stack[ctx->top++] = *v;
182 static void stack_popn(exec_ctx_t *ctx, unsigned n)
185 VariantClear(stack_pop(ctx));
188 static HRESULT stack_pop_val(exec_ctx_t *ctx, variant_val_t *v)
192 var = stack_pop(ctx);
194 if(V_VT(var) == (VT_BYREF|VT_VARIANT)) {
196 var = V_VARIANTREF(var);
201 if(V_VT(var) == VT_DISPATCH) {
202 FIXME("got dispatch - get its default value\n");
211 static inline void release_val(variant_val_t *v)
217 static HRESULT stack_pop_disp(exec_ctx_t *ctx, IDispatch **ret)
219 VARIANT *v = stack_pop(ctx);
221 if(V_VT(v) == VT_DISPATCH) {
222 *ret = V_DISPATCH(v);
226 if(V_VT(v) != (VT_VARIANT|VT_BYREF)) {
227 FIXME("not supported type: %s\n", debugstr_variant(v));
233 if(V_VT(v) != VT_DISPATCH) {
234 FIXME("not disp %s\n", debugstr_variant(v));
239 IDispatch_AddRef(V_DISPATCH(v));
240 *ret = V_DISPATCH(v);
244 static inline void instr_jmp(exec_ctx_t *ctx, unsigned addr)
246 ctx->instr = ctx->code->instrs + addr;
249 static void vbstack_to_dp(exec_ctx_t *ctx, unsigned arg_cnt, DISPPARAMS *dp)
252 dp->rgdispidNamedArgs = NULL;
259 assert(ctx->top >= arg_cnt);
261 for(i=1; i*2 <= arg_cnt; i++) {
262 tmp = ctx->stack[ctx->top-i];
263 ctx->stack[ctx->top-i] = ctx->stack[ctx->top-arg_cnt+i-1];
264 ctx->stack[ctx->top-arg_cnt+i-1] = tmp;
267 dp->rgvarg = ctx->stack + ctx->top-arg_cnt;
273 static HRESULT do_icall(exec_ctx_t *ctx, VARIANT *res)
275 BSTR identifier = ctx->instr->arg1.bstr;
276 const unsigned arg_cnt = ctx->instr->arg2.uint;
281 hres = lookup_identifier(ctx, identifier, VBDISP_CALLGET, &ref);
285 vbstack_to_dp(ctx, arg_cnt, &dp);
290 FIXME("REF_VAR no res\n");
295 FIXME("arguments not implemented\n");
299 V_VT(res) = VT_BYREF|VT_VARIANT;
300 V_BYREF(res) = V_VT(ref.u.v) == (VT_VARIANT|VT_BYREF) ? V_VARIANTREF(ref.u.v) : ref.u.v;
303 hres = disp_call(ctx->script, ref.u.d.disp, ref.u.d.id, &dp, res);
308 hres = exec_script(ctx->script, ref.u.f, NULL, &dp, res);
313 FIXME("%s not found\n", debugstr_w(identifier));
314 return DISP_E_UNKNOWNNAME;
317 stack_popn(ctx, arg_cnt);
321 static HRESULT interp_icall(exec_ctx_t *ctx)
328 hres = do_icall(ctx, &v);
332 return stack_push(ctx, &v);
335 static HRESULT interp_icallv(exec_ctx_t *ctx)
338 return do_icall(ctx, NULL);
341 static HRESULT do_mcall(exec_ctx_t *ctx, VARIANT *res)
343 const BSTR identifier = ctx->instr->arg1.bstr;
344 const unsigned arg_cnt = ctx->instr->arg2.uint;
350 hres = stack_pop_disp(ctx, &obj);
359 vbstack_to_dp(ctx, arg_cnt, &dp);
361 hres = disp_get_id(obj, identifier, VBDISP_CALLGET, FALSE, &id);
363 hres = disp_call(ctx->script, obj, id, &dp, res);
364 IDispatch_Release(obj);
368 stack_popn(ctx, arg_cnt);
372 static HRESULT interp_mcall(exec_ctx_t *ctx)
379 hres = do_mcall(ctx, &res);
383 return stack_push(ctx, &res);
386 static HRESULT interp_mcallv(exec_ctx_t *ctx)
390 return do_mcall(ctx, NULL);
393 static HRESULT assign_ident(exec_ctx_t *ctx, BSTR name, VARIANT *val, BOOL own_val)
398 hres = lookup_identifier(ctx, name, VBDISP_LET, &ref);
404 VARIANT *v = ref.u.v;
406 if(V_VT(v) == (VT_VARIANT|VT_BYREF))
414 hres = VariantCopy(v, val);
419 hres = disp_propput(ctx->script, ref.u.d.disp, ref.u.d.id, val);
424 FIXME("functions not implemented\n");
427 FIXME("%s not found\n", debugstr_w(name));
430 return DISP_E_UNKNOWNNAME;
436 static HRESULT interp_assign_ident(exec_ctx_t *ctx)
438 const BSTR arg = ctx->instr->arg1.bstr;
442 TRACE("%s\n", debugstr_w(arg));
444 hres = stack_pop_val(ctx, &v);
448 return assign_ident(ctx, arg, v.v, v.owned);
451 static HRESULT interp_set_ident(exec_ctx_t *ctx)
453 const BSTR arg = ctx->instr->arg1.bstr;
458 TRACE("%s\n", debugstr_w(arg));
460 hres = stack_pop_disp(ctx, &disp);
464 V_VT(&v) = VT_DISPATCH;
465 V_DISPATCH(&v) = disp;
466 return assign_ident(ctx, ctx->instr->arg1.bstr, &v, TRUE);
469 static HRESULT interp_assign_member(exec_ctx_t *ctx)
471 BSTR identifier = ctx->instr->arg1.bstr;
477 TRACE("%s\n", debugstr_w(identifier));
479 hres = stack_pop_disp(ctx, &obj);
488 hres = stack_pop_val(ctx, &val);
490 IDispatch_Release(obj);
494 hres = disp_get_id(obj, identifier, VBDISP_LET, FALSE, &id);
496 hres = disp_propput(ctx->script, obj, id, val.v);
499 IDispatch_Release(obj);
503 static HRESULT interp_set_member(exec_ctx_t *ctx)
505 BSTR identifier = ctx->instr->arg1.bstr;
506 IDispatch *obj, *val;
510 TRACE("%s\n", debugstr_w(identifier));
512 hres = stack_pop_disp(ctx, &obj);
521 hres = stack_pop_disp(ctx, &val);
523 IDispatch_Release(obj);
527 hres = disp_get_id(obj, identifier, VBDISP_SET, FALSE, &id);
528 if(SUCCEEDED(hres)) {
531 V_VT(&v) = VT_DISPATCH;
532 V_DISPATCH(&v) = val;
533 hres = disp_propput(ctx->script, obj, id, &v);
537 IDispatch_Release(val);
538 IDispatch_Release(obj);
542 static HRESULT interp_new(exec_ctx_t *ctx)
544 const WCHAR *arg = ctx->instr->arg1.bstr;
545 class_desc_t *class_desc;
550 TRACE("%s\n", debugstr_w(arg));
552 for(class_desc = ctx->script->classes; class_desc; class_desc = class_desc->next) {
553 if(!strcmpiW(class_desc->name, arg))
557 FIXME("Class %s not found\n", debugstr_w(arg));
561 hres = create_vbdisp(class_desc, &obj);
565 V_VT(&v) = VT_DISPATCH;
566 V_DISPATCH(&v) = (IDispatch*)&obj->IDispatchEx_iface;
567 return stack_push(ctx, &v);
570 static HRESULT interp_jmp(exec_ctx_t *ctx)
572 const unsigned arg = ctx->instr->arg1.uint;
580 static HRESULT interp_jmp_false(exec_ctx_t *ctx)
582 const unsigned arg = ctx->instr->arg1.uint;
588 hres = stack_pop_val(ctx, &val);
592 if(V_VT(val.v) != VT_BOOL) {
593 FIXME("unsupported for %s\n", debugstr_variant(val.v));
601 instr_jmp(ctx, ctx->instr->arg1.uint);
605 static HRESULT interp_ret(exec_ctx_t *ctx)
613 static HRESULT interp_stop(exec_ctx_t *ctx)
617 /* NOTE: this should have effect in debugging mode (that we don't support yet) */
621 static HRESULT interp_bool(exec_ctx_t *ctx)
623 const VARIANT_BOOL arg = ctx->instr->arg1.lng;
626 TRACE("%s\n", arg ? "true" : "false");
630 return stack_push(ctx, &v);
633 static HRESULT interp_string(exec_ctx_t *ctx)
640 V_BSTR(&v) = SysAllocString(ctx->instr->arg1.str);
642 return E_OUTOFMEMORY;
644 return stack_push(ctx, &v);
647 static HRESULT interp_long(exec_ctx_t *ctx)
649 const LONG arg = ctx->instr->arg1.lng;
656 return stack_push(ctx, &v);
659 static HRESULT interp_short(exec_ctx_t *ctx)
661 const LONG arg = ctx->instr->arg1.lng;
668 return stack_push(ctx, &v);
671 static HRESULT interp_double(exec_ctx_t *ctx)
673 const DOUBLE *arg = ctx->instr->arg1.dbl;
676 TRACE("%lf\n", *arg);
680 return stack_push(ctx, &v);
683 static HRESULT interp_empty(exec_ctx_t *ctx)
690 return stack_push(ctx, &v);
693 static HRESULT interp_null(exec_ctx_t *ctx)
700 return stack_push(ctx, &v);
703 static HRESULT interp_nothing(exec_ctx_t *ctx)
709 V_VT(&v) = VT_DISPATCH;
710 V_DISPATCH(&v) = NULL;
711 return stack_push(ctx, &v);
714 static HRESULT interp_not(exec_ctx_t *ctx)
722 hres = stack_pop_val(ctx, &val);
726 hres = VarNot(val.v, &v);
731 return stack_push(ctx, &v);
734 static HRESULT interp_and(exec_ctx_t *ctx)
742 hres = stack_pop_val(ctx, &r);
746 hres = stack_pop_val(ctx, &l);
747 if(SUCCEEDED(hres)) {
748 hres = VarAnd(l.v, r.v, &v);
755 return stack_push(ctx, &v);
758 static HRESULT interp_or(exec_ctx_t *ctx)
766 hres = stack_pop_val(ctx, &r);
770 hres = stack_pop_val(ctx, &l);
771 if(SUCCEEDED(hres)) {
772 hres = VarOr(l.v, r.v, &v);
779 return stack_push(ctx, &v);
782 static HRESULT interp_xor(exec_ctx_t *ctx)
790 hres = stack_pop_val(ctx, &r);
794 hres = stack_pop_val(ctx, &l);
795 if(SUCCEEDED(hres)) {
796 hres = VarXor(l.v, r.v, &v);
803 return stack_push(ctx, &v);
806 static HRESULT interp_eqv(exec_ctx_t *ctx)
814 hres = stack_pop_val(ctx, &r);
818 hres = stack_pop_val(ctx, &l);
819 if(SUCCEEDED(hres)) {
820 hres = VarEqv(l.v, r.v, &v);
827 return stack_push(ctx, &v);
830 static HRESULT interp_imp(exec_ctx_t *ctx)
838 hres = stack_pop_val(ctx, &r);
842 hres = stack_pop_val(ctx, &l);
843 if(SUCCEEDED(hres)) {
844 hres = VarImp(l.v, r.v, &v);
851 return stack_push(ctx, &v);
854 static HRESULT cmp_oper(exec_ctx_t *ctx)
859 hres = stack_pop_val(ctx, &r);
863 hres = stack_pop_val(ctx, &l);
864 if(SUCCEEDED(hres)) {
865 if(V_VT(l.v) == VT_NULL || V_VT(r.v) == VT_NULL) {
866 FIXME("comparing nulls is not implemented\n");
869 hres = VarCmp(l.v, r.v, ctx->script->lcid, 0);
878 static HRESULT interp_equal(exec_ctx_t *ctx)
885 hres = cmp_oper(ctx);
890 V_BOOL(&v) = hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
891 return stack_push(ctx, &v);
894 static HRESULT interp_nequal(exec_ctx_t *ctx)
901 hres = cmp_oper(ctx);
906 V_BOOL(&v) = hres != VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
907 return stack_push(ctx, &v);
910 static HRESULT interp_concat(exec_ctx_t *ctx)
918 hres = stack_pop_val(ctx, &r);
922 hres = stack_pop_val(ctx, &l);
923 if(SUCCEEDED(hres)) {
924 hres = VarCat(l.v, r.v, &v);
931 return stack_push(ctx, &v);
934 static HRESULT interp_add(exec_ctx_t *ctx)
942 hres = stack_pop_val(ctx, &r);
946 hres = stack_pop_val(ctx, &l);
947 if(SUCCEEDED(hres)) {
948 hres = VarAdd(l.v, r.v, &v);
955 return stack_push(ctx, &v);
958 static HRESULT interp_sub(exec_ctx_t *ctx)
966 hres = stack_pop_val(ctx, &r);
970 hres = stack_pop_val(ctx, &l);
971 if(SUCCEEDED(hres)) {
972 hres = VarSub(l.v, r.v, &v);
979 return stack_push(ctx, &v);
982 static HRESULT interp_mod(exec_ctx_t *ctx)
990 hres = stack_pop_val(ctx, &r);
994 hres = stack_pop_val(ctx, &l);
995 if(SUCCEEDED(hres)) {
996 hres = VarMod(l.v, r.v, &v);
1003 return stack_push(ctx, &v);
1006 static HRESULT interp_idiv(exec_ctx_t *ctx)
1014 hres = stack_pop_val(ctx, &r);
1018 hres = stack_pop_val(ctx, &l);
1019 if(SUCCEEDED(hres)) {
1020 hres = VarIdiv(l.v, r.v, &v);
1027 return stack_push(ctx, &v);
1030 static HRESULT interp_div(exec_ctx_t *ctx)
1038 hres = stack_pop_val(ctx, &r);
1042 hres = stack_pop_val(ctx, &l);
1043 if(SUCCEEDED(hres)) {
1044 hres = VarDiv(l.v, r.v, &v);
1051 return stack_push(ctx, &v);
1054 static HRESULT interp_mul(exec_ctx_t *ctx)
1062 hres = stack_pop_val(ctx, &r);
1066 hres = stack_pop_val(ctx, &l);
1067 if(SUCCEEDED(hres)) {
1068 hres = VarMul(l.v, r.v, &v);
1075 return stack_push(ctx, &v);
1078 static HRESULT interp_exp(exec_ctx_t *ctx)
1086 hres = stack_pop_val(ctx, &r);
1090 hres = stack_pop_val(ctx, &l);
1091 if(SUCCEEDED(hres)) {
1092 hres = VarPow(l.v, r.v, &v);
1099 return stack_push(ctx, &v);
1102 static HRESULT interp_neg(exec_ctx_t *ctx)
1108 hres = stack_pop_val(ctx, &val);
1112 hres = VarNeg(val.v, &v);
1117 return stack_push(ctx, &v);
1120 static const instr_func_t op_funcs[] = {
1121 #define X(x,n,a,b) interp_ ## x,
1126 static const unsigned op_move[] = {
1127 #define X(x,n,a,b) n,
1132 static void release_exec(exec_ctx_t *ctx)
1136 VariantClear(&ctx->ret_val);
1139 IDispatch_Release(ctx->this_obj);
1142 for(i=0; i < ctx->func->arg_cnt; i++)
1143 VariantClear(ctx->args+i);
1147 for(i=0; i < ctx->func->var_cnt; i++)
1148 VariantClear(ctx->vars+i);
1151 heap_free(ctx->args);
1152 heap_free(ctx->vars);
1153 heap_free(ctx->stack);
1156 HRESULT exec_script(script_ctx_t *ctx, function_t *func, IDispatch *this_obj, DISPPARAMS *dp, VARIANT *res)
1158 exec_ctx_t exec = {func->code_ctx};
1160 HRESULT hres = S_OK;
1162 exec.code = func->code_ctx;
1164 if(dp ? func->arg_cnt != arg_cnt(dp) : func->arg_cnt) {
1165 FIXME("wrong arg_cnt %d, expected %d\n", dp ? arg_cnt(dp) : 0, func->arg_cnt);
1173 exec.args = heap_alloc_zero(func->arg_cnt * sizeof(VARIANT));
1175 release_exec(&exec);
1176 return E_OUTOFMEMORY;
1179 for(i=0; i < func->arg_cnt; i++) {
1181 if(V_VT(v) == (VT_VARIANT|VT_BYREF)) {
1182 if(func->args[i].by_ref)
1185 hres = VariantCopy(exec.args+i, V_VARIANTREF(v));
1187 hres = VariantCopy(exec.args+i, v);
1190 release_exec(&exec);
1199 exec.vars = heap_alloc_zero(func->var_cnt * sizeof(VARIANT));
1201 release_exec(&exec);
1202 return E_OUTOFMEMORY;
1208 exec.stack_size = 16;
1210 exec.stack = heap_alloc(exec.stack_size * sizeof(VARIANT));
1212 release_exec(&exec);
1213 return E_OUTOFMEMORY;
1217 exec.this_obj = this_obj;
1218 else if (ctx->host_global)
1219 exec.this_obj = ctx->host_global;
1221 exec.this_obj = (IDispatch*)&ctx->script_obj->IDispatchEx_iface;
1222 IDispatch_AddRef(exec.this_obj);
1224 exec.instr = exec.code->instrs + func->code_off;
1229 op = exec.instr->op;
1230 hres = op_funcs[op](&exec);
1232 FIXME("Failed %08x\n", hres);
1233 stack_popn(&exec, exec.top);
1237 exec.instr += op_move[op];
1241 if(func->type != FUNC_FUNCTION && func->type != FUNC_PROPGET && func->type != FUNC_DEFGET)
1242 assert(V_VT(&exec.ret_val) == VT_EMPTY);
1244 if(SUCCEEDED(hres) && res) {
1245 *res = exec.ret_val;
1246 V_VT(&exec.ret_val) = VT_EMPTY;
1249 release_exec(&exec);