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wine/dlls/vbscript/interp.c

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/*
* Copyright 2011 Jacek Caban for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include "vbscript.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(vbscript);
static DISPID propput_dispid = DISPID_PROPERTYPUT;
typedef struct {
vbscode_t *code;
instr_t *instr;
script_ctx_t *script;
function_t *func;
IDispatch *this_obj;
VARIANT *args;
VARIANT *vars;
dynamic_var_t *dynamic_vars;
vbsheap_t heap;
BOOL resume_next;
unsigned stack_size;
unsigned top;
VARIANT *stack;
VARIANT ret_val;
} exec_ctx_t;
typedef HRESULT (*instr_func_t)(exec_ctx_t*);
typedef enum {
REF_NONE,
REF_DISP,
REF_VAR,
REF_OBJ,
REF_CONST,
REF_FUNC
} ref_type_t;
typedef struct {
ref_type_t type;
union {
struct {
IDispatch *disp;
DISPID id;
} d;
VARIANT *v;
function_t *f;
IDispatch *obj;
} u;
} ref_t;
typedef struct {
VARIANT *v;
VARIANT store;
BOOL owned;
} variant_val_t;
static BOOL lookup_dynamic_vars(dynamic_var_t *var, const WCHAR *name, ref_t *ref)
{
while(var) {
if(!strcmpiW(var->name, name)) {
ref->type = var->is_const ? REF_CONST : REF_VAR;
ref->u.v = &var->v;
return TRUE;
}
var = var->next;
}
return FALSE;
}
static HRESULT lookup_identifier(exec_ctx_t *ctx, BSTR name, vbdisp_invoke_type_t invoke_type, ref_t *ref)
{
named_item_t *item;
function_t *func;
unsigned i;
DISPID id;
HRESULT hres;
static const WCHAR errW[] = {'e','r','r',0};
if(invoke_type == VBDISP_LET
&& (ctx->func->type == FUNC_FUNCTION || ctx->func->type == FUNC_PROPGET || ctx->func->type == FUNC_DEFGET)
&& !strcmpiW(name, ctx->func->name)) {
ref->type = REF_VAR;
ref->u.v = &ctx->ret_val;
return S_OK;
}
for(i=0; i < ctx->func->var_cnt; i++) {
if(!strcmpiW(ctx->func->vars[i].name, name)) {
ref->type = REF_VAR;
ref->u.v = ctx->vars+i;
return TRUE;
}
}
for(i=0; i < ctx->func->arg_cnt; i++) {
if(!strcmpiW(ctx->func->args[i].name, name)) {
ref->type = REF_VAR;
ref->u.v = ctx->args+i;
return S_OK;
}
}
if(lookup_dynamic_vars(ctx->func->type == FUNC_GLOBAL ? ctx->script->global_vars : ctx->dynamic_vars, name, ref))
return S_OK;
if(ctx->func->type != FUNC_GLOBAL) {
hres = disp_get_id(ctx->this_obj, name, invoke_type, TRUE, &id);
if(SUCCEEDED(hres)) {
ref->type = REF_DISP;
ref->u.d.disp = ctx->this_obj;
ref->u.d.id = id;
return S_OK;
}
}
if(ctx->func->type != FUNC_GLOBAL && lookup_dynamic_vars(ctx->script->global_vars, name, ref))
return S_OK;
for(func = ctx->script->global_funcs; func; func = func->next) {
if(!strcmpiW(func->name, name)) {
ref->type = REF_FUNC;
ref->u.f = func;
return S_OK;
}
}
if(!strcmpiW(name, errW)) {
ref->type = REF_OBJ;
ref->u.obj = (IDispatch*)&ctx->script->err_obj->IDispatchEx_iface;
return S_OK;
}
hres = vbdisp_get_id(ctx->script->global_obj, name, invoke_type, TRUE, &id);
if(SUCCEEDED(hres)) {
ref->type = REF_DISP;
ref->u.d.disp = (IDispatch*)&ctx->script->global_obj->IDispatchEx_iface;
ref->u.d.id = id;
return S_OK;
}
LIST_FOR_EACH_ENTRY(item, &ctx->script->named_items, named_item_t, entry) {
if((item->flags & SCRIPTITEM_ISVISIBLE) && !strcmpiW(item->name, name)) {
if(!item->disp) {
IUnknown *unk;
hres = IActiveScriptSite_GetItemInfo(ctx->script->site, name, SCRIPTINFO_IUNKNOWN, &unk, NULL);
if(FAILED(hres)) {
WARN("GetItemInfo failed: %08x\n", hres);
continue;
}
hres = IUnknown_QueryInterface(unk, &IID_IDispatch, (void**)&item->disp);
IUnknown_Release(unk);
if(FAILED(hres)) {
WARN("object does not implement IDispatch\n");
continue;
}
}
ref->type = REF_OBJ;
ref->u.obj = item->disp;
return S_OK;
}
}
LIST_FOR_EACH_ENTRY(item, &ctx->script->named_items, named_item_t, entry) {
if((item->flags & SCRIPTITEM_GLOBALMEMBERS)) {
hres = disp_get_id(item->disp, name, invoke_type, FALSE, &id);
if(SUCCEEDED(hres)) {
ref->type = REF_DISP;
ref->u.d.disp = item->disp;
ref->u.d.id = id;
return S_OK;
}
}
}
ref->type = REF_NONE;
return S_OK;
}
static HRESULT add_dynamic_var(exec_ctx_t *ctx, const WCHAR *name, BOOL is_const, VARIANT *val, BOOL own_val)
{
dynamic_var_t *new_var;
vbsheap_t *heap;
WCHAR *str;
unsigned size;
HRESULT hres;
heap = ctx->func->type == FUNC_GLOBAL ? &ctx->script->heap : &ctx->heap;
new_var = vbsheap_alloc(heap, sizeof(*new_var));
if(!new_var)
return E_OUTOFMEMORY;
size = (strlenW(name)+1)*sizeof(WCHAR);
str = vbsheap_alloc(heap, size);
if(!str)
return E_OUTOFMEMORY;
memcpy(str, name, size);
new_var->name = str;
new_var->is_const = is_const;
if(own_val) {
new_var->v = *val;
}else {
V_VT(&new_var->v) = VT_EMPTY;
hres = VariantCopy(&new_var->v, val);
if(FAILED(hres))
return hres;
}
if(ctx->func->type == FUNC_GLOBAL) {
new_var->next = ctx->script->global_vars;
ctx->script->global_vars = new_var;
}else {
new_var->next = ctx->dynamic_vars;
ctx->dynamic_vars = new_var;
}
return S_OK;
}
static inline VARIANT *stack_pop(exec_ctx_t *ctx)
{
assert(ctx->top);
return ctx->stack + --ctx->top;
}
static inline VARIANT *stack_top(exec_ctx_t *ctx, unsigned n)
{
assert(ctx->top >= n);
return ctx->stack + (ctx->top-n-1);
}
static HRESULT stack_push(exec_ctx_t *ctx, VARIANT *v)
{
if(ctx->stack_size == ctx->top) {
VARIANT *new_stack;
new_stack = heap_realloc(ctx->stack, ctx->stack_size*2*sizeof(*ctx->stack));
if(!new_stack) {
VariantClear(v);
return E_OUTOFMEMORY;
}
ctx->stack = new_stack;
ctx->stack_size *= 2;
}
ctx->stack[ctx->top++] = *v;
return S_OK;
}
static inline HRESULT stack_push_null(exec_ctx_t *ctx)
{
VARIANT v;
V_VT(&v) = VT_NULL;
return stack_push(ctx, &v);
}
static void stack_popn(exec_ctx_t *ctx, unsigned n)
{
while(n--)
VariantClear(stack_pop(ctx));
}
static HRESULT stack_pop_val(exec_ctx_t *ctx, variant_val_t *v)
{
VARIANT *var;
var = stack_pop(ctx);
if(V_VT(var) == (VT_BYREF|VT_VARIANT)) {
v->owned = FALSE;
var = V_VARIANTREF(var);
}else {
v->owned = TRUE;
}
if(V_VT(var) == VT_DISPATCH) {
DISPPARAMS dp = {0};
HRESULT hres;
hres = disp_call(ctx->script, V_DISPATCH(var), DISPID_VALUE, &dp, &v->store);
if(v->owned)
IDispatch_Release(V_DISPATCH(var));
if(FAILED(hres))
return hres;
v->owned = TRUE;
v->v = &v->store;
}else {
v->v = var;
}
return S_OK;
}
static HRESULT stack_assume_val(exec_ctx_t *ctx, unsigned n)
{
VARIANT *v = stack_top(ctx, n);
HRESULT hres;
if(V_VT(v) == (VT_BYREF|VT_VARIANT)) {
VARIANT *ref = V_VARIANTREF(v);
V_VT(v) = VT_EMPTY;
hres = VariantCopy(v, ref);
if(FAILED(hres))
return hres;
}
if(V_VT(v) == VT_DISPATCH) {
DISPPARAMS dp = {0};
IDispatch *disp;
disp = V_DISPATCH(v);
V_VT(v) = VT_EMPTY;
hres = disp_call(ctx->script, disp, DISPID_VALUE, &dp, v);
IDispatch_Release(disp);
if(FAILED(hres))
return hres;
}
return S_OK;
}
static inline void release_val(variant_val_t *v)
{
if(v->owned)
VariantClear(v->v);
}
static int stack_pop_bool(exec_ctx_t *ctx, BOOL *b)
{
variant_val_t val;
HRESULT hres;
hres = stack_pop_val(ctx, &val);
if(FAILED(hres))
return hres;
switch (V_VT(val.v))
{
case VT_BOOL:
*b = V_BOOL(val.v);
break;
case VT_NULL:
*b = FALSE;
break;
case VT_I2:
*b = V_I2(val.v);
break;
case VT_I4:
*b = V_I4(val.v);
break;
default:
FIXME("unsupported for %s\n", debugstr_variant(val.v));
release_val(&val);
return E_NOTIMPL;
}
return S_OK;
}
static HRESULT stack_pop_disp(exec_ctx_t *ctx, IDispatch **ret)
{
VARIANT *v = stack_pop(ctx);
if(V_VT(v) == VT_DISPATCH) {
*ret = V_DISPATCH(v);
return S_OK;
}
if(V_VT(v) != (VT_VARIANT|VT_BYREF)) {
FIXME("not supported type: %s\n", debugstr_variant(v));
VariantClear(v);
return E_FAIL;
}
v = V_BYREF(v);
if(V_VT(v) != VT_DISPATCH) {
FIXME("not disp %s\n", debugstr_variant(v));
return E_FAIL;
}
if(V_DISPATCH(v))
IDispatch_AddRef(V_DISPATCH(v));
*ret = V_DISPATCH(v);
return S_OK;
}
static HRESULT stack_assume_disp(exec_ctx_t *ctx, unsigned n, IDispatch **disp)
{
VARIANT *v = stack_top(ctx, n), *ref;
if(V_VT(v) != VT_DISPATCH) {
if(V_VT(v) != (VT_VARIANT|VT_BYREF)) {
FIXME("not supported type: %s\n", debugstr_variant(v));
return E_FAIL;
}
ref = V_VARIANTREF(v);
if(V_VT(ref) != VT_DISPATCH) {
FIXME("not disp %s\n", debugstr_variant(ref));
return E_FAIL;
}
V_VT(v) = VT_DISPATCH;
V_DISPATCH(v) = V_DISPATCH(ref);
if(V_DISPATCH(v))
IDispatch_AddRef(V_DISPATCH(v));
}
if(disp)
*disp = V_DISPATCH(v);
return S_OK;
}
static inline void instr_jmp(exec_ctx_t *ctx, unsigned addr)
{
ctx->instr = ctx->code->instrs + addr;
}
static void vbstack_to_dp(exec_ctx_t *ctx, unsigned arg_cnt, BOOL is_propput, DISPPARAMS *dp)
{
dp->cNamedArgs = is_propput ? 1 : 0;
dp->cArgs = arg_cnt + dp->cNamedArgs;
dp->rgdispidNamedArgs = is_propput ? &propput_dispid : NULL;
if(arg_cnt) {
VARIANT tmp;
unsigned i;
assert(ctx->top >= arg_cnt);
for(i=1; i*2 <= arg_cnt; i++) {
tmp = ctx->stack[ctx->top-i];
ctx->stack[ctx->top-i] = ctx->stack[ctx->top-arg_cnt+i-1];
ctx->stack[ctx->top-arg_cnt+i-1] = tmp;
}
dp->rgvarg = ctx->stack + ctx->top-dp->cArgs;
}else {
dp->rgvarg = is_propput ? ctx->stack+ctx->top-1 : NULL;
}
}
static HRESULT do_icall(exec_ctx_t *ctx, VARIANT *res)
{
BSTR identifier = ctx->instr->arg1.bstr;
const unsigned arg_cnt = ctx->instr->arg2.uint;
DISPPARAMS dp;
ref_t ref;
HRESULT hres;
hres = lookup_identifier(ctx, identifier, VBDISP_CALLGET, &ref);
if(FAILED(hres))
return hres;
vbstack_to_dp(ctx, arg_cnt, FALSE, &dp);
switch(ref.type) {
case REF_VAR:
case REF_CONST:
if(!res) {
FIXME("REF_VAR no res\n");
return E_NOTIMPL;
}
if(arg_cnt) {
FIXME("arguments not implemented\n");
return E_NOTIMPL;
}
V_VT(res) = VT_BYREF|VT_VARIANT;
V_BYREF(res) = V_VT(ref.u.v) == (VT_VARIANT|VT_BYREF) ? V_VARIANTREF(ref.u.v) : ref.u.v;
break;
case REF_DISP:
hres = disp_call(ctx->script, ref.u.d.disp, ref.u.d.id, &dp, res);
if(FAILED(hres))
return hres;
break;
case REF_FUNC:
hres = exec_script(ctx->script, ref.u.f, NULL, &dp, res);
if(FAILED(hres))
return hres;
break;
case REF_OBJ:
if(arg_cnt) {
FIXME("arguments on object\n");
return E_NOTIMPL;
}
if(res) {
IDispatch_AddRef(ref.u.obj);
V_VT(res) = VT_DISPATCH;
V_DISPATCH(res) = ref.u.obj;
}
break;
case REF_NONE:
FIXME("%s not found\n", debugstr_w(identifier));
return DISP_E_UNKNOWNNAME;
}
stack_popn(ctx, arg_cnt);
return S_OK;
}
static HRESULT interp_icall(exec_ctx_t *ctx)
{
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = do_icall(ctx, &v);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_icallv(exec_ctx_t *ctx)
{
TRACE("\n");
return do_icall(ctx, NULL);
}
static HRESULT do_mcall(exec_ctx_t *ctx, VARIANT *res)
{
const BSTR identifier = ctx->instr->arg1.bstr;
const unsigned arg_cnt = ctx->instr->arg2.uint;
IDispatch *obj;
DISPPARAMS dp;
DISPID id;
HRESULT hres;
hres = stack_pop_disp(ctx, &obj);
if(FAILED(hres))
return hres;
if(!obj) {
FIXME("NULL obj\n");
return E_FAIL;
}
vbstack_to_dp(ctx, arg_cnt, FALSE, &dp);
hres = disp_get_id(obj, identifier, VBDISP_CALLGET, FALSE, &id);
if(SUCCEEDED(hres))
hres = disp_call(ctx->script, obj, id, &dp, res);
IDispatch_Release(obj);
if(FAILED(hres))
return hres;
stack_popn(ctx, arg_cnt);
return S_OK;
}
static HRESULT interp_mcall(exec_ctx_t *ctx)
{
VARIANT res;
HRESULT hres;
TRACE("\n");
hres = do_mcall(ctx, &res);
if(FAILED(hres))
return hres;
return stack_push(ctx, &res);
}
static HRESULT interp_mcallv(exec_ctx_t *ctx)
{
TRACE("\n");
return do_mcall(ctx, NULL);
}
static HRESULT assign_ident(exec_ctx_t *ctx, BSTR name, DISPPARAMS *dp)
{
ref_t ref;
HRESULT hres;
hres = lookup_identifier(ctx, name, VBDISP_LET, &ref);
if(FAILED(hres))
return hres;
switch(ref.type) {
case REF_VAR: {
VARIANT *v = ref.u.v;
if(arg_cnt(dp)) {
FIXME("arg_cnt %d not supported\n", arg_cnt(dp));
return E_NOTIMPL;
}
if(V_VT(v) == (VT_VARIANT|VT_BYREF))
v = V_VARIANTREF(v);
hres = VariantCopy(v, dp->rgvarg);
break;
}
case REF_DISP:
hres = disp_propput(ctx->script, ref.u.d.disp, ref.u.d.id, dp);
break;
case REF_FUNC:
FIXME("functions not implemented\n");
return E_NOTIMPL;
case REF_OBJ:
FIXME("REF_OBJ\n");
return E_NOTIMPL;
case REF_CONST:
FIXME("REF_CONST\n");
return E_NOTIMPL;
case REF_NONE:
if(ctx->func->code_ctx->option_explicit) {
FIXME("throw exception\n");
hres = E_FAIL;
}else {
if(arg_cnt(dp)) {
FIXME("arg_cnt %d not supported\n", arg_cnt(dp));
return E_NOTIMPL;
}
TRACE("creating variable %s\n", debugstr_w(name));
hres = add_dynamic_var(ctx, name, FALSE, dp->rgvarg, FALSE);
}
}
return hres;
}
static HRESULT interp_assign_ident(exec_ctx_t *ctx)
{
const BSTR arg = ctx->instr->arg1.bstr;
const unsigned arg_cnt = ctx->instr->arg2.uint;
DISPPARAMS dp;
HRESULT hres;
TRACE("%s\n", debugstr_w(arg));
hres = stack_assume_val(ctx, arg_cnt);
if(FAILED(hres))
return hres;
vbstack_to_dp(ctx, arg_cnt, TRUE, &dp);
hres = assign_ident(ctx, arg, &dp);
if(FAILED(hres))
return hres;
stack_popn(ctx, arg_cnt+1);
return S_OK;
}
static HRESULT interp_set_ident(exec_ctx_t *ctx)
{
const BSTR arg = ctx->instr->arg1.bstr;
const unsigned arg_cnt = ctx->instr->arg2.uint;
DISPPARAMS dp;
HRESULT hres;
TRACE("%s\n", debugstr_w(arg));
if(arg_cnt) {
FIXME("arguments not supported\n");
return E_NOTIMPL;
}
hres = stack_assume_disp(ctx, 0, NULL);
if(FAILED(hres))
return hres;
vbstack_to_dp(ctx, 0, TRUE, &dp);
hres = assign_ident(ctx, ctx->instr->arg1.bstr, &dp);
if(FAILED(hres))
return hres;
stack_popn(ctx, 1);
return S_OK;
}
static HRESULT interp_assign_member(exec_ctx_t *ctx)
{
BSTR identifier = ctx->instr->arg1.bstr;
const unsigned arg_cnt = ctx->instr->arg2.uint;
IDispatch *obj;
DISPPARAMS dp;
DISPID id;
HRESULT hres;
TRACE("%s\n", debugstr_w(identifier));
hres = stack_assume_disp(ctx, arg_cnt+1, &obj);
if(FAILED(hres))
return hres;
if(!obj) {
FIXME("NULL obj\n");
return E_FAIL;
}
hres = stack_assume_val(ctx, arg_cnt);
if(FAILED(hres))
return hres;
hres = disp_get_id(obj, identifier, VBDISP_LET, FALSE, &id);
if(SUCCEEDED(hres)) {
vbstack_to_dp(ctx, arg_cnt, TRUE, &dp);
hres = disp_propput(ctx->script, obj, id, &dp);
}
if(FAILED(hres))
return hres;
stack_popn(ctx, arg_cnt+2);
return S_OK;
}
static HRESULT interp_set_member(exec_ctx_t *ctx)
{
BSTR identifier = ctx->instr->arg1.bstr;
const unsigned arg_cnt = ctx->instr->arg2.uint;
IDispatch *obj;
DISPPARAMS dp;
DISPID id;
HRESULT hres;
TRACE("%s\n", debugstr_w(identifier));
if(arg_cnt) {
FIXME("arguments not supported\n");
return E_NOTIMPL;
}
hres = stack_assume_disp(ctx, 1, &obj);
if(FAILED(hres))
return hres;
if(!obj) {
FIXME("NULL obj\n");
return E_FAIL;
}
hres = stack_assume_disp(ctx, 0, NULL);
if(FAILED(hres))
return hres;
hres = disp_get_id(obj, identifier, VBDISP_SET, FALSE, &id);
if(SUCCEEDED(hres)) {
vbstack_to_dp(ctx, arg_cnt, TRUE, &dp);
hres = disp_propput(ctx->script, obj, id, &dp);
}
if(FAILED(hres))
return hres;
stack_popn(ctx, 2);
return S_OK;
}
static HRESULT interp_const(exec_ctx_t *ctx)
{
BSTR arg = ctx->instr->arg1.bstr;
variant_val_t val;
ref_t ref;
HRESULT hres;
TRACE("%s\n", debugstr_w(arg));
assert(ctx->func->type == FUNC_GLOBAL);
hres = lookup_identifier(ctx, arg, VBDISP_CALLGET, &ref);
if(FAILED(hres))
return hres;
if(ref.type != REF_NONE) {
FIXME("%s already defined\n", debugstr_w(arg));
return E_FAIL;
}
hres = stack_pop_val(ctx, &val);
if(FAILED(hres))
return hres;
return add_dynamic_var(ctx, arg, TRUE, val.v, val.owned);
}
static HRESULT interp_val(exec_ctx_t *ctx)
{
variant_val_t val;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &val);
if(FAILED(hres))
return hres;
if(!val.owned) {
V_VT(&v) = VT_EMPTY;
hres = VariantCopy(&v, val.v);
if(FAILED(hres))
return hres;
}
return stack_push(ctx, val.owned ? val.v : &v);
}
static HRESULT interp_pop(exec_ctx_t *ctx)
{
const unsigned n = ctx->instr->arg1.uint;
TRACE("%u\n", n);
stack_popn(ctx, n);
return S_OK;
}
static HRESULT interp_new(exec_ctx_t *ctx)
{
const WCHAR *arg = ctx->instr->arg1.bstr;
class_desc_t *class_desc;
vbdisp_t *obj;
VARIANT v;
HRESULT hres;
TRACE("%s\n", debugstr_w(arg));
for(class_desc = ctx->script->classes; class_desc; class_desc = class_desc->next) {
if(!strcmpiW(class_desc->name, arg))
break;
}
if(!class_desc) {
FIXME("Class %s not found\n", debugstr_w(arg));
return E_FAIL;
}
hres = create_vbdisp(class_desc, &obj);
if(FAILED(hres))
return hres;
V_VT(&v) = VT_DISPATCH;
V_DISPATCH(&v) = (IDispatch*)&obj->IDispatchEx_iface;
return stack_push(ctx, &v);
}
static HRESULT interp_step(exec_ctx_t *ctx)
{
const BSTR ident = ctx->instr->arg2.bstr;
BOOL gteq_zero;
VARIANT zero;
ref_t ref;
HRESULT hres;
TRACE("%s\n", debugstr_w(ident));
V_VT(&zero) = VT_I2;
V_I2(&zero) = 0;
hres = VarCmp(stack_top(ctx, 0), &zero, ctx->script->lcid, 0);
if(FAILED(hres))
return hres;
gteq_zero = hres == VARCMP_GT || hres == VARCMP_EQ;
hres = lookup_identifier(ctx, ident, VBDISP_ANY, &ref);
if(FAILED(hres))
return hres;
if(ref.type != REF_VAR) {
FIXME("%s is not REF_VAR\n", debugstr_w(ident));
return E_FAIL;
}
hres = VarCmp(ref.u.v, stack_top(ctx, 1), ctx->script->lcid, 0);
if(FAILED(hres))
return hres;
if(hres == VARCMP_EQ || hres == (gteq_zero ? VARCMP_LT : VARCMP_GT)) {
ctx->instr++;
}else {
stack_popn(ctx, 2);
instr_jmp(ctx, ctx->instr->arg1.uint);
}
return S_OK;
}
static HRESULT interp_newenum(exec_ctx_t *ctx)
{
VARIANT *v, r;
HRESULT hres;
TRACE("\n");
v = stack_pop(ctx);
switch(V_VT(v)) {
case VT_DISPATCH: {
IEnumVARIANT *iter;
DISPPARAMS dp = {0};
VARIANT iterv;
hres = disp_call(ctx->script, V_DISPATCH(v), DISPID_NEWENUM, &dp, &iterv);
VariantClear(v);
if(FAILED(hres))
return hres;
if(V_VT(&iterv) != VT_UNKNOWN && V_VT(&iterv) != VT_DISPATCH) {
FIXME("Unsupported iterv %s\n", debugstr_variant(&iterv));
VariantClear(&iterv);
return hres;
}
hres = IUnknown_QueryInterface(V_UNKNOWN(&iterv), &IID_IEnumVARIANT, (void**)&iter);
IUnknown_Release(V_UNKNOWN(&iterv));
if(FAILED(hres)) {
FIXME("Could not get IEnumVARIANT iface: %08x\n", hres);
return hres;
}
V_VT(&r) = VT_UNKNOWN;
V_UNKNOWN(&r) = (IUnknown*)iter;
break;
}
default:
FIXME("Unsupported for %s\n", debugstr_variant(v));
VariantClear(v);
return E_NOTIMPL;
}
return stack_push(ctx, &r);
}
static HRESULT interp_enumnext(exec_ctx_t *ctx)
{
const unsigned loop_end = ctx->instr->arg1.uint;
const BSTR ident = ctx->instr->arg2.bstr;
VARIANT v;
DISPPARAMS dp = {&v, &propput_dispid, 1, 1};
IEnumVARIANT *iter;
BOOL do_continue;
HRESULT hres;
TRACE("\n");
assert(V_VT(stack_top(ctx, 0)) == VT_UNKNOWN);
iter = (IEnumVARIANT*)V_UNKNOWN(stack_top(ctx, 0));
V_VT(&v) = VT_EMPTY;
hres = IEnumVARIANT_Next(iter, 1, &v, NULL);
if(FAILED(hres))
return hres;
do_continue = hres == S_OK;
hres = assign_ident(ctx, ident, &dp);
VariantClear(&v);
if(FAILED(hres))
return hres;
if(do_continue) {
ctx->instr++;
}else {
stack_pop(ctx);
instr_jmp(ctx, loop_end);
}
return S_OK;
}
static HRESULT interp_jmp(exec_ctx_t *ctx)
{
const unsigned arg = ctx->instr->arg1.uint;
TRACE("%u\n", arg);
instr_jmp(ctx, arg);
return S_OK;
}
static HRESULT interp_jmp_false(exec_ctx_t *ctx)
{
const unsigned arg = ctx->instr->arg1.uint;
HRESULT hres;
BOOL b;
TRACE("%u\n", arg);
hres = stack_pop_bool(ctx, &b);
if(FAILED(hres))
return hres;
if(b)
ctx->instr++;
else
instr_jmp(ctx, ctx->instr->arg1.uint);
return S_OK;
}
static HRESULT interp_jmp_true(exec_ctx_t *ctx)
{
const unsigned arg = ctx->instr->arg1.uint;
HRESULT hres;
BOOL b;
TRACE("%u\n", arg);
hres = stack_pop_bool(ctx, &b);
if(FAILED(hres))
return hres;
if(b)
instr_jmp(ctx, ctx->instr->arg1.uint);
else
ctx->instr++;
return S_OK;
}
static HRESULT interp_ret(exec_ctx_t *ctx)
{
TRACE("\n");
ctx->instr = NULL;
return S_OK;
}
static HRESULT interp_stop(exec_ctx_t *ctx)
{
WARN("\n");
/* NOTE: this should have effect in debugging mode (that we don't support yet) */
return S_OK;
}
static HRESULT interp_me(exec_ctx_t *ctx)
{
VARIANT v;
TRACE("\n");
IDispatch_AddRef(ctx->this_obj);
V_VT(&v) = VT_DISPATCH;
V_DISPATCH(&v) = ctx->this_obj;
return stack_push(ctx, &v);
}
static HRESULT interp_bool(exec_ctx_t *ctx)
{
const VARIANT_BOOL arg = ctx->instr->arg1.lng;
VARIANT v;
TRACE("%s\n", arg ? "true" : "false");
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = arg;
return stack_push(ctx, &v);
}
static HRESULT interp_errmode(exec_ctx_t *ctx)
{
const int err_mode = ctx->instr->arg1.uint;
TRACE("%d\n", err_mode);
ctx->resume_next = err_mode;
return S_OK;
}
static HRESULT interp_string(exec_ctx_t *ctx)
{
VARIANT v;
TRACE("\n");
V_VT(&v) = VT_BSTR;
V_BSTR(&v) = SysAllocString(ctx->instr->arg1.str);
if(!V_BSTR(&v))
return E_OUTOFMEMORY;
return stack_push(ctx, &v);
}
static HRESULT interp_long(exec_ctx_t *ctx)
{
const LONG arg = ctx->instr->arg1.lng;
VARIANT v;
TRACE("%d\n", arg);
V_VT(&v) = VT_I4;
V_I4(&v) = arg;
return stack_push(ctx, &v);
}
static HRESULT interp_short(exec_ctx_t *ctx)
{
const LONG arg = ctx->instr->arg1.lng;
VARIANT v;
TRACE("%d\n", arg);
V_VT(&v) = VT_I2;
V_I2(&v) = arg;
return stack_push(ctx, &v);
}
static HRESULT interp_double(exec_ctx_t *ctx)
{
const DOUBLE *arg = ctx->instr->arg1.dbl;
VARIANT v;
TRACE("%lf\n", *arg);
V_VT(&v) = VT_R8;
V_R8(&v) = *arg;
return stack_push(ctx, &v);
}
static HRESULT interp_empty(exec_ctx_t *ctx)
{
VARIANT v;
TRACE("\n");
V_VT(&v) = VT_EMPTY;
return stack_push(ctx, &v);
}
static HRESULT interp_null(exec_ctx_t *ctx)
{
TRACE("\n");
return stack_push_null(ctx);
}
static HRESULT interp_nothing(exec_ctx_t *ctx)
{
VARIANT v;
TRACE("\n");
V_VT(&v) = VT_DISPATCH;
V_DISPATCH(&v) = NULL;
return stack_push(ctx, &v);
}
static HRESULT interp_not(exec_ctx_t *ctx)
{
variant_val_t val;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &val);
if(FAILED(hres))
return hres;
hres = VarNot(val.v, &v);
release_val(&val);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_and(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarAnd(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_or(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarOr(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_xor(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarXor(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_eqv(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarEqv(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_imp(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarImp(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT var_cmp(exec_ctx_t *ctx, VARIANT *l, VARIANT *r)
{
TRACE("%s %s\n", debugstr_variant(l), debugstr_variant(r));
/* FIXME: Fix comparing string to number */
return VarCmp(l, r, ctx->script->lcid, 0);
}
static HRESULT cmp_oper(exec_ctx_t *ctx)
{
variant_val_t l, r;
HRESULT hres;
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = var_cmp(ctx, l.v, r.v);
release_val(&l);
}
release_val(&r);
return hres;
}
static HRESULT interp_equal(exec_ctx_t *ctx)
{
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
return stack_push(ctx, &v);
}
static HRESULT interp_nequal(exec_ctx_t *ctx)
{
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres != VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
return stack_push(ctx, &v);
}
static HRESULT interp_gt(exec_ctx_t *ctx)
{
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_GT ? VARIANT_TRUE : VARIANT_FALSE;
return stack_push(ctx, &v);
}
static HRESULT interp_gteq(exec_ctx_t *ctx)
{
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_GT || hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
return stack_push(ctx, &v);
}
static HRESULT interp_lt(exec_ctx_t *ctx)
{
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_LT ? VARIANT_TRUE : VARIANT_FALSE;
return stack_push(ctx, &v);
}
static HRESULT interp_lteq(exec_ctx_t *ctx)
{
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = cmp_oper(ctx);
if(FAILED(hres))
return hres;
if(hres == VARCMP_NULL)
return stack_push_null(ctx);
V_VT(&v) = VT_BOOL;
V_BOOL(&v) = hres == VARCMP_LT || hres == VARCMP_EQ ? VARIANT_TRUE : VARIANT_FALSE;
return stack_push(ctx, &v);
}
static HRESULT interp_case(exec_ctx_t *ctx)
{
const unsigned arg = ctx->instr->arg1.uint;
variant_val_t v;
HRESULT hres;
TRACE("%d\n", arg);
hres = stack_pop_val(ctx, &v);
if(FAILED(hres))
return hres;
hres = var_cmp(ctx, stack_top(ctx, 0), v.v);
release_val(&v);
if(FAILED(hres))
return hres;
if(hres == VARCMP_EQ) {
stack_popn(ctx, 1);
instr_jmp(ctx, arg);
}else {
ctx->instr++;
}
return S_OK;
}
static HRESULT disp_cmp(IDispatch *disp1, IDispatch *disp2, VARIANT_BOOL *ret)
{
IObjectIdentity *identity;
IUnknown *unk1, *unk2;
HRESULT hres;
if(disp1 == disp2) {
*ret = VARIANT_TRUE;
return S_OK;
}
if(!disp1 || !disp2) {
*ret = VARIANT_FALSE;
return S_OK;
}
hres = IDispatch_QueryInterface(disp1, &IID_IUnknown, (void**)&unk1);
if(FAILED(hres))
return hres;
hres = IDispatch_QueryInterface(disp2, &IID_IUnknown, (void**)&unk2);
if(FAILED(hres)) {
IUnknown_Release(unk1);
return hres;
}
if(unk1 == unk2) {
*ret = VARIANT_TRUE;
}else {
hres = IUnknown_QueryInterface(unk1, &IID_IObjectIdentity, (void**)&identity);
if(SUCCEEDED(hres)) {
hres = IObjectIdentity_IsEqualObject(identity, unk2);
IObjectIdentity_Release(identity);
*ret = hres == S_OK ? VARIANT_TRUE : VARIANT_FALSE;
}else {
*ret = VARIANT_FALSE;
}
}
IUnknown_Release(unk1);
IUnknown_Release(unk2);
return S_OK;
}
static HRESULT interp_is(exec_ctx_t *ctx)
{
IDispatch *l, *r;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_disp(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_disp(ctx, &l);
if(SUCCEEDED(hres)) {
V_VT(&v) = VT_BOOL;
hres = disp_cmp(l, r, &V_BOOL(&v));
if(l)
IDispatch_Release(l);
}
if(r)
IDispatch_Release(r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_concat(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarCat(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_add(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarAdd(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_sub(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarSub(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_mod(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarMod(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_idiv(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarIdiv(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_div(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarDiv(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_mul(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarMul(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_exp(exec_ctx_t *ctx)
{
variant_val_t r, l;
VARIANT v;
HRESULT hres;
TRACE("\n");
hres = stack_pop_val(ctx, &r);
if(FAILED(hres))
return hres;
hres = stack_pop_val(ctx, &l);
if(SUCCEEDED(hres)) {
hres = VarPow(l.v, r.v, &v);
release_val(&l);
}
release_val(&r);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_neg(exec_ctx_t *ctx)
{
variant_val_t val;
VARIANT v;
HRESULT hres;
hres = stack_pop_val(ctx, &val);
if(FAILED(hres))
return hres;
hres = VarNeg(val.v, &v);
release_val(&val);
if(FAILED(hres))
return hres;
return stack_push(ctx, &v);
}
static HRESULT interp_incc(exec_ctx_t *ctx)
{
const BSTR ident = ctx->instr->arg1.bstr;
VARIANT v;
ref_t ref;
HRESULT hres;
TRACE("\n");
hres = lookup_identifier(ctx, ident, VBDISP_LET, &ref);
if(FAILED(hres))
return hres;
if(ref.type != REF_VAR) {
FIXME("ref.type is not REF_VAR\n");
return E_FAIL;
}
hres = VarAdd(stack_top(ctx, 0), ref.u.v, &v);
if(FAILED(hres))
return hres;
VariantClear(ref.u.v);
*ref.u.v = v;
return S_OK;
}
static const instr_func_t op_funcs[] = {
#define X(x,n,a,b) interp_ ## x,
OP_LIST
#undef X
};
static const unsigned op_move[] = {
#define X(x,n,a,b) n,
OP_LIST
#undef X
};
void release_dynamic_vars(dynamic_var_t *var)
{
while(var) {
VariantClear(&var->v);
var = var->next;
}
}
static void release_exec(exec_ctx_t *ctx)
{
unsigned i;
VariantClear(&ctx->ret_val);
release_dynamic_vars(ctx->dynamic_vars);
if(ctx->this_obj)
IDispatch_Release(ctx->this_obj);
if(ctx->args) {
for(i=0; i < ctx->func->arg_cnt; i++)
VariantClear(ctx->args+i);
}
if(ctx->vars) {
for(i=0; i < ctx->func->var_cnt; i++)
VariantClear(ctx->vars+i);
}
vbsheap_free(&ctx->heap);
heap_free(ctx->args);
heap_free(ctx->vars);
heap_free(ctx->stack);
}
HRESULT exec_script(script_ctx_t *ctx, function_t *func, IDispatch *this_obj, DISPPARAMS *dp, VARIANT *res)
{
exec_ctx_t exec = {func->code_ctx};
vbsop_t op;
HRESULT hres = S_OK;
exec.code = func->code_ctx;
if(dp ? func->arg_cnt != arg_cnt(dp) : func->arg_cnt) {
FIXME("wrong arg_cnt %d, expected %d\n", dp ? arg_cnt(dp) : 0, func->arg_cnt);
return E_FAIL;
}
vbsheap_init(&exec.heap);
if(func->arg_cnt) {
VARIANT *v;
unsigned i;
exec.args = heap_alloc_zero(func->arg_cnt * sizeof(VARIANT));
if(!exec.args) {
release_exec(&exec);
return E_OUTOFMEMORY;
}
for(i=0; i < func->arg_cnt; i++) {
v = get_arg(dp, i);
if(V_VT(v) == (VT_VARIANT|VT_BYREF)) {
if(func->args[i].by_ref)
exec.args[i] = *v;
else
hres = VariantCopy(exec.args+i, V_VARIANTREF(v));
}else {
hres = VariantCopy(exec.args+i, v);
}
if(FAILED(hres)) {
release_exec(&exec);
return hres;
}
}
}else {
exec.args = NULL;
}
if(func->var_cnt) {
exec.vars = heap_alloc_zero(func->var_cnt * sizeof(VARIANT));
if(!exec.vars) {
release_exec(&exec);
return E_OUTOFMEMORY;
}
}else {
exec.vars = NULL;
}
exec.stack_size = 16;
exec.top = 0;
exec.stack = heap_alloc(exec.stack_size * sizeof(VARIANT));
if(!exec.stack) {
release_exec(&exec);
return E_OUTOFMEMORY;
}
if(this_obj)
exec.this_obj = this_obj;
else if (ctx->host_global)
exec.this_obj = ctx->host_global;
else
exec.this_obj = (IDispatch*)&ctx->script_obj->IDispatchEx_iface;
IDispatch_AddRef(exec.this_obj);
exec.instr = exec.code->instrs + func->code_off;
exec.script = ctx;
exec.func = func;
while(exec.instr) {
op = exec.instr->op;
hres = op_funcs[op](&exec);
if(FAILED(hres)) {
if(exec.resume_next)
FIXME("Failed %08x in resume next mode\n", hres);
else
WARN("Failed %08x\n", hres);
stack_popn(&exec, exec.top);
break;
}
exec.instr += op_move[op];
}
assert(!exec.top);
if(func->type != FUNC_FUNCTION && func->type != FUNC_PROPGET && func->type != FUNC_DEFGET)
assert(V_VT(&exec.ret_val) == VT_EMPTY);
if(SUCCEEDED(hres) && res) {
*res = exec.ret_val;
V_VT(&exec.ret_val) = VT_EMPTY;
}
release_exec(&exec);
return hres;
}
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