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) {
205 hres = disp_call(ctx->script, V_DISPATCH(var), DISPID_VALUE, &dp, &v->store);
207 IDispatch_Release(V_DISPATCH(var));
220 static inline void release_val(variant_val_t *v)
226 static HRESULT stack_pop_disp(exec_ctx_t *ctx, IDispatch **ret)
228 VARIANT *v = stack_pop(ctx);
230 if(V_VT(v) == VT_DISPATCH) {
231 *ret = V_DISPATCH(v);
235 if(V_VT(v) != (VT_VARIANT|VT_BYREF)) {
236 FIXME("not supported type: %s\n", debugstr_variant(v));
242 if(V_VT(v) != VT_DISPATCH) {
243 FIXME("not disp %s\n", debugstr_variant(v));
248 IDispatch_AddRef(V_DISPATCH(v));
249 *ret = V_DISPATCH(v);
253 static inline void instr_jmp(exec_ctx_t *ctx, unsigned addr)
255 ctx->instr = ctx->code->instrs + addr;
258 static void vbstack_to_dp(exec_ctx_t *ctx, unsigned arg_cnt, DISPPARAMS *dp)
261 dp->rgdispidNamedArgs = NULL;
268 assert(ctx->top >= arg_cnt);
270 for(i=1; i*2 <= arg_cnt; i++) {
271 tmp = ctx->stack[ctx->top-i];
272 ctx->stack[ctx->top-i] = ctx->stack[ctx->top-arg_cnt+i-1];
273 ctx->stack[ctx->top-arg_cnt+i-1] = tmp;
276 dp->rgvarg = ctx->stack + ctx->top-arg_cnt;
282 static HRESULT do_icall(exec_ctx_t *ctx, VARIANT *res)
284 BSTR identifier = ctx->instr->arg1.bstr;
285 const unsigned arg_cnt = ctx->instr->arg2.uint;
290 hres = lookup_identifier(ctx, identifier, VBDISP_CALLGET, &ref);
294 vbstack_to_dp(ctx, arg_cnt, &dp);
299 FIXME("REF_VAR no res\n");
304 FIXME("arguments not implemented\n");
308 V_VT(res) = VT_BYREF|VT_VARIANT;
309 V_BYREF(res) = V_VT(ref.u.v) == (VT_VARIANT|VT_BYREF) ? V_VARIANTREF(ref.u.v) : ref.u.v;
312 hres = disp_call(ctx->script, ref.u.d.disp, ref.u.d.id, &dp, res);
317 hres = exec_script(ctx->script, ref.u.f, NULL, &dp, res);
322 FIXME("%s not found\n", debugstr_w(identifier));
323 return DISP_E_UNKNOWNNAME;
326 stack_popn(ctx, arg_cnt);
330 static HRESULT interp_icall(exec_ctx_t *ctx)
337 hres = do_icall(ctx, &v);
341 return stack_push(ctx, &v);
344 static HRESULT interp_icallv(exec_ctx_t *ctx)
347 return do_icall(ctx, NULL);
350 static HRESULT do_mcall(exec_ctx_t *ctx, VARIANT *res)
352 const BSTR identifier = ctx->instr->arg1.bstr;
353 const unsigned arg_cnt = ctx->instr->arg2.uint;
359 hres = stack_pop_disp(ctx, &obj);
368 vbstack_to_dp(ctx, arg_cnt, &dp);
370 hres = disp_get_id(obj, identifier, VBDISP_CALLGET, FALSE, &id);
372 hres = disp_call(ctx->script, obj, id, &dp, res);
373 IDispatch_Release(obj);
377 stack_popn(ctx, arg_cnt);
381 static HRESULT interp_mcall(exec_ctx_t *ctx)
388 hres = do_mcall(ctx, &res);
392 return stack_push(ctx, &res);
395 static HRESULT interp_mcallv(exec_ctx_t *ctx)
399 return do_mcall(ctx, NULL);
402 static HRESULT assign_ident(exec_ctx_t *ctx, BSTR name, VARIANT *val, BOOL own_val)
407 hres = lookup_identifier(ctx, name, VBDISP_LET, &ref);
413 VARIANT *v = ref.u.v;
415 if(V_VT(v) == (VT_VARIANT|VT_BYREF))
423 hres = VariantCopy(v, val);
428 hres = disp_propput(ctx->script, ref.u.d.disp, ref.u.d.id, val);
433 FIXME("functions not implemented\n");
436 FIXME("%s not found\n", debugstr_w(name));
439 return DISP_E_UNKNOWNNAME;
445 static HRESULT interp_assign_ident(exec_ctx_t *ctx)
447 const BSTR arg = ctx->instr->arg1.bstr;
451 TRACE("%s\n", debugstr_w(arg));
453 hres = stack_pop_val(ctx, &v);
457 return assign_ident(ctx, arg, v.v, v.owned);
460 static HRESULT interp_set_ident(exec_ctx_t *ctx)
462 const BSTR arg = ctx->instr->arg1.bstr;
467 TRACE("%s\n", debugstr_w(arg));
469 hres = stack_pop_disp(ctx, &disp);
473 V_VT(&v) = VT_DISPATCH;
474 V_DISPATCH(&v) = disp;
475 return assign_ident(ctx, ctx->instr->arg1.bstr, &v, TRUE);
478 static HRESULT interp_assign_member(exec_ctx_t *ctx)
480 BSTR identifier = ctx->instr->arg1.bstr;
486 TRACE("%s\n", debugstr_w(identifier));
488 hres = stack_pop_disp(ctx, &obj);
497 hres = stack_pop_val(ctx, &val);
499 IDispatch_Release(obj);
503 hres = disp_get_id(obj, identifier, VBDISP_LET, FALSE, &id);
505 hres = disp_propput(ctx->script, obj, id, val.v);
508 IDispatch_Release(obj);
512 static HRESULT interp_set_member(exec_ctx_t *ctx)
514 BSTR identifier = ctx->instr->arg1.bstr;
515 IDispatch *obj, *val;
519 TRACE("%s\n", debugstr_w(identifier));
521 hres = stack_pop_disp(ctx, &obj);
530 hres = stack_pop_disp(ctx, &val);
532 IDispatch_Release(obj);
536 hres = disp_get_id(obj, identifier, VBDISP_SET, FALSE, &id);
537 if(SUCCEEDED(hres)) {
540 V_VT(&v) = VT_DISPATCH;
541 V_DISPATCH(&v) = val;
542 hres = disp_propput(ctx->script, obj, id, &v);
546 IDispatch_Release(val);
547 IDispatch_Release(obj);
551 static HRESULT interp_new(exec_ctx_t *ctx)
553 const WCHAR *arg = ctx->instr->arg1.bstr;
554 class_desc_t *class_desc;
559 TRACE("%s\n", debugstr_w(arg));
561 for(class_desc = ctx->script->classes; class_desc; class_desc = class_desc->next) {
562 if(!strcmpiW(class_desc->name, arg))
566 FIXME("Class %s not found\n", debugstr_w(arg));
570 hres = create_vbdisp(class_desc, &obj);
574 V_VT(&v) = VT_DISPATCH;
575 V_DISPATCH(&v) = (IDispatch*)&obj->IDispatchEx_iface;
576 return stack_push(ctx, &v);
579 static HRESULT interp_jmp(exec_ctx_t *ctx)
581 const unsigned arg = ctx->instr->arg1.uint;
589 static HRESULT interp_jmp_false(exec_ctx_t *ctx)
591 const unsigned arg = ctx->instr->arg1.uint;
597 hres = stack_pop_val(ctx, &val);
601 if(V_VT(val.v) != VT_BOOL) {
602 FIXME("unsupported for %s\n", debugstr_variant(val.v));
610 instr_jmp(ctx, ctx->instr->arg1.uint);
614 static HRESULT interp_ret(exec_ctx_t *ctx)
622 static HRESULT interp_stop(exec_ctx_t *ctx)
626 /* NOTE: this should have effect in debugging mode (that we don't support yet) */
630 static HRESULT interp_bool(exec_ctx_t *ctx)
632 const VARIANT_BOOL arg = ctx->instr->arg1.lng;
635 TRACE("%s\n", arg ? "true" : "false");
639 return stack_push(ctx, &v);
642 static HRESULT interp_string(exec_ctx_t *ctx)
649 V_BSTR(&v) = SysAllocString(ctx->instr->arg1.str);
651 return E_OUTOFMEMORY;
653 return stack_push(ctx, &v);
656 static HRESULT interp_long(exec_ctx_t *ctx)
658 const LONG arg = ctx->instr->arg1.lng;
665 return stack_push(ctx, &v);
668 static HRESULT interp_short(exec_ctx_t *ctx)
670 const LONG arg = ctx->instr->arg1.lng;
677 return stack_push(ctx, &v);
680 static HRESULT interp_double(exec_ctx_t *ctx)
682 const DOUBLE *arg = ctx->instr->arg1.dbl;
685 TRACE("%lf\n", *arg);
689 return stack_push(ctx, &v);
692 static HRESULT interp_empty(exec_ctx_t *ctx)
699 return stack_push(ctx, &v);
702 static HRESULT interp_null(exec_ctx_t *ctx)
709 return stack_push(ctx, &v);
712 static HRESULT interp_nothing(exec_ctx_t *ctx)
718 V_VT(&v) = VT_DISPATCH;
719 V_DISPATCH(&v) = NULL;
720 return stack_push(ctx, &v);
723 static HRESULT interp_not(exec_ctx_t *ctx)
731 hres = stack_pop_val(ctx, &val);
735 hres = VarNot(val.v, &v);
740 return stack_push(ctx, &v);
743 static HRESULT interp_and(exec_ctx_t *ctx)
751 hres = stack_pop_val(ctx, &r);
755 hres = stack_pop_val(ctx, &l);
756 if(SUCCEEDED(hres)) {
757 hres = VarAnd(l.v, r.v, &v);
764 return stack_push(ctx, &v);
767 static HRESULT interp_or(exec_ctx_t *ctx)
775 hres = stack_pop_val(ctx, &r);
779 hres = stack_pop_val(ctx, &l);
780 if(SUCCEEDED(hres)) {
781 hres = VarOr(l.v, r.v, &v);
788 return stack_push(ctx, &v);
791 static HRESULT interp_xor(exec_ctx_t *ctx)
799 hres = stack_pop_val(ctx, &r);
803 hres = stack_pop_val(ctx, &l);
804 if(SUCCEEDED(hres)) {
805 hres = VarXor(l.v, r.v, &v);
812 return stack_push(ctx, &v);
815 static HRESULT interp_eqv(exec_ctx_t *ctx)
823 hres = stack_pop_val(ctx, &r);
827 hres = stack_pop_val(ctx, &l);
828 if(SUCCEEDED(hres)) {
829 hres = VarEqv(l.v, r.v, &v);
836 return stack_push(ctx, &v);
839 static HRESULT interp_imp(exec_ctx_t *ctx)
847 hres = stack_pop_val(ctx, &r);
851 hres = stack_pop_val(ctx, &l);
852 if(SUCCEEDED(hres)) {
853 hres = VarImp(l.v, r.v, &v);
860 return stack_push(ctx, &v);
863 static HRESULT cmp_oper(exec_ctx_t *ctx)
868 hres = stack_pop_val(ctx, &r);
872 hres = stack_pop_val(ctx, &l);
873 if(SUCCEEDED(hres)) {
874 if(V_VT(l.v) == VT_NULL || V_VT(r.v) == VT_NULL) {
875 FIXME("comparing nulls is not implemented\n");
878 hres = VarCmp(l.v, r.v, ctx->script->lcid, 0);
887 static HRESULT interp_equal(exec_ctx_t *ctx)
894 hres = cmp_oper(ctx);
899 V_BOOL(&v) = hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
900 return stack_push(ctx, &v);
903 static HRESULT interp_nequal(exec_ctx_t *ctx)
910 hres = cmp_oper(ctx);
915 V_BOOL(&v) = hres != VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
916 return stack_push(ctx, &v);
919 static HRESULT interp_concat(exec_ctx_t *ctx)
927 hres = stack_pop_val(ctx, &r);
931 hres = stack_pop_val(ctx, &l);
932 if(SUCCEEDED(hres)) {
933 hres = VarCat(l.v, r.v, &v);
940 return stack_push(ctx, &v);
943 static HRESULT interp_add(exec_ctx_t *ctx)
951 hres = stack_pop_val(ctx, &r);
955 hres = stack_pop_val(ctx, &l);
956 if(SUCCEEDED(hres)) {
957 hres = VarAdd(l.v, r.v, &v);
964 return stack_push(ctx, &v);
967 static HRESULT interp_sub(exec_ctx_t *ctx)
975 hres = stack_pop_val(ctx, &r);
979 hres = stack_pop_val(ctx, &l);
980 if(SUCCEEDED(hres)) {
981 hres = VarSub(l.v, r.v, &v);
988 return stack_push(ctx, &v);
991 static HRESULT interp_mod(exec_ctx_t *ctx)
999 hres = stack_pop_val(ctx, &r);
1003 hres = stack_pop_val(ctx, &l);
1004 if(SUCCEEDED(hres)) {
1005 hres = VarMod(l.v, r.v, &v);
1012 return stack_push(ctx, &v);
1015 static HRESULT interp_idiv(exec_ctx_t *ctx)
1023 hres = stack_pop_val(ctx, &r);
1027 hres = stack_pop_val(ctx, &l);
1028 if(SUCCEEDED(hres)) {
1029 hres = VarIdiv(l.v, r.v, &v);
1036 return stack_push(ctx, &v);
1039 static HRESULT interp_div(exec_ctx_t *ctx)
1047 hres = stack_pop_val(ctx, &r);
1051 hres = stack_pop_val(ctx, &l);
1052 if(SUCCEEDED(hres)) {
1053 hres = VarDiv(l.v, r.v, &v);
1060 return stack_push(ctx, &v);
1063 static HRESULT interp_mul(exec_ctx_t *ctx)
1071 hres = stack_pop_val(ctx, &r);
1075 hres = stack_pop_val(ctx, &l);
1076 if(SUCCEEDED(hres)) {
1077 hres = VarMul(l.v, r.v, &v);
1084 return stack_push(ctx, &v);
1087 static HRESULT interp_exp(exec_ctx_t *ctx)
1095 hres = stack_pop_val(ctx, &r);
1099 hres = stack_pop_val(ctx, &l);
1100 if(SUCCEEDED(hres)) {
1101 hres = VarPow(l.v, r.v, &v);
1108 return stack_push(ctx, &v);
1111 static HRESULT interp_neg(exec_ctx_t *ctx)
1117 hres = stack_pop_val(ctx, &val);
1121 hres = VarNeg(val.v, &v);
1126 return stack_push(ctx, &v);
1129 static const instr_func_t op_funcs[] = {
1130 #define X(x,n,a,b) interp_ ## x,
1135 static const unsigned op_move[] = {
1136 #define X(x,n,a,b) n,
1141 static void release_exec(exec_ctx_t *ctx)
1145 VariantClear(&ctx->ret_val);
1148 IDispatch_Release(ctx->this_obj);
1151 for(i=0; i < ctx->func->arg_cnt; i++)
1152 VariantClear(ctx->args+i);
1156 for(i=0; i < ctx->func->var_cnt; i++)
1157 VariantClear(ctx->vars+i);
1160 heap_free(ctx->args);
1161 heap_free(ctx->vars);
1162 heap_free(ctx->stack);
1165 HRESULT exec_script(script_ctx_t *ctx, function_t *func, IDispatch *this_obj, DISPPARAMS *dp, VARIANT *res)
1167 exec_ctx_t exec = {func->code_ctx};
1169 HRESULT hres = S_OK;
1171 exec.code = func->code_ctx;
1173 if(dp ? func->arg_cnt != arg_cnt(dp) : func->arg_cnt) {
1174 FIXME("wrong arg_cnt %d, expected %d\n", dp ? arg_cnt(dp) : 0, func->arg_cnt);
1182 exec.args = heap_alloc_zero(func->arg_cnt * sizeof(VARIANT));
1184 release_exec(&exec);
1185 return E_OUTOFMEMORY;
1188 for(i=0; i < func->arg_cnt; i++) {
1190 if(V_VT(v) == (VT_VARIANT|VT_BYREF)) {
1191 if(func->args[i].by_ref)
1194 hres = VariantCopy(exec.args+i, V_VARIANTREF(v));
1196 hres = VariantCopy(exec.args+i, v);
1199 release_exec(&exec);
1208 exec.vars = heap_alloc_zero(func->var_cnt * sizeof(VARIANT));
1210 release_exec(&exec);
1211 return E_OUTOFMEMORY;
1217 exec.stack_size = 16;
1219 exec.stack = heap_alloc(exec.stack_size * sizeof(VARIANT));
1221 release_exec(&exec);
1222 return E_OUTOFMEMORY;
1226 exec.this_obj = this_obj;
1227 else if (ctx->host_global)
1228 exec.this_obj = ctx->host_global;
1230 exec.this_obj = (IDispatch*)&ctx->script_obj->IDispatchEx_iface;
1231 IDispatch_AddRef(exec.this_obj);
1233 exec.instr = exec.code->instrs + func->code_off;
1238 op = exec.instr->op;
1239 hres = op_funcs[op](&exec);
1241 FIXME("Failed %08x\n", hres);
1242 stack_popn(&exec, exec.top);
1246 exec.instr += op_move[op];
1250 if(func->type != FUNC_FUNCTION && func->type != FUNC_PROPGET && func->type != FUNC_DEFGET)
1251 assert(V_VT(&exec.ret_val) == VT_EMPTY);
1253 if(SUCCEEDED(hres) && res) {
1254 *res = exec.ret_val;
1255 V_VT(&exec.ret_val) = VT_EMPTY;
1258 release_exec(&exec);