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wine/dlls/jscript/jsutils.c
Gabriel Ivăncescu 4fd955ae07 jscript: Treat NULL disps as actual null values in html mode. 
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2022-04-12 22:13:05 +02:00

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/*
* Copyright 2008 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 <math.h>
#include <assert.h>
#include "jscript.h"
#include "engine.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(jscript);
WINE_DECLARE_DEBUG_CHANNEL(heap);
const char *debugstr_jsval(const jsval_t v)
{
switch(jsval_type(v)) {
case JSV_UNDEFINED:
return "undefined";
case JSV_NULL:
return "null";
case JSV_OBJECT:
return wine_dbg_sprintf("obj(%p)", get_object(v));
case JSV_STRING:
return wine_dbg_sprintf("str(%s)", debugstr_jsstr(get_string(v)));
case JSV_NUMBER:
return wine_dbg_sprintf("%lf", get_number(v));
case JSV_BOOL:
return get_bool(v) ? "true" : "false";
case JSV_VARIANT:
return debugstr_variant(get_variant(v));
}
assert(0);
return NULL;
}
#define MIN_BLOCK_SIZE 128
#define ARENA_FREE_FILLER 0xaa
static inline DWORD block_size(DWORD block)
{
return MIN_BLOCK_SIZE << block;
}
void heap_pool_init(heap_pool_t *heap)
{
memset(heap, 0, sizeof(*heap));
list_init(&heap->custom_blocks);
}
void *heap_pool_alloc(heap_pool_t *heap, DWORD size)
{
struct list *list;
void *tmp;
if(!heap->block_cnt) {
if(!heap->blocks) {
heap->blocks = heap_alloc(sizeof(void*));
if(!heap->blocks)
return NULL;
}
tmp = heap_alloc(block_size(0));
if(!tmp)
return NULL;
heap->blocks[0] = tmp;
heap->block_cnt = 1;
}
if(heap->offset + size <= block_size(heap->last_block)) {
tmp = ((BYTE*)heap->blocks[heap->last_block])+heap->offset;
heap->offset += size;
return tmp;
}
if(size <= block_size(heap->last_block+1)) {
if(heap->last_block+1 == heap->block_cnt) {
tmp = heap_realloc(heap->blocks, (heap->block_cnt+1)*sizeof(void*));
if(!tmp)
return NULL;
heap->blocks = tmp;
heap->blocks[heap->block_cnt] = heap_alloc(block_size(heap->block_cnt));
if(!heap->blocks[heap->block_cnt])
return NULL;
heap->block_cnt++;
}
heap->last_block++;
heap->offset = size;
return heap->blocks[heap->last_block];
}
list = heap_alloc(size + sizeof(struct list));
if(!list)
return NULL;
list_add_head(&heap->custom_blocks, list);
return list+1;
}
void *heap_pool_grow(heap_pool_t *heap, void *mem, DWORD size, DWORD inc)
{
void *ret;
if(mem == (BYTE*)heap->blocks[heap->last_block] + heap->offset-size
&& heap->offset+inc < block_size(heap->last_block)) {
heap->offset += inc;
return mem;
}
ret = heap_pool_alloc(heap, size+inc);
if(ret) /* FIXME: avoid copying for custom blocks */
memcpy(ret, mem, size);
return ret;
}
void heap_pool_clear(heap_pool_t *heap)
{
struct list *tmp;
if(!heap)
return;
while((tmp = list_head(&heap->custom_blocks))) {
list_remove(tmp);
heap_free(tmp);
}
if(WARN_ON(heap)) {
DWORD i;
for(i=0; i < heap->block_cnt; i++)
memset(heap->blocks[i], ARENA_FREE_FILLER, block_size(i));
}
heap->last_block = heap->offset = 0;
heap->mark = FALSE;
}
void heap_pool_free(heap_pool_t *heap)
{
DWORD i;
heap_pool_clear(heap);
for(i=0; i < heap->block_cnt; i++)
heap_free(heap->blocks[i]);
heap_free(heap->blocks);
heap_pool_init(heap);
}
heap_pool_t *heap_pool_mark(heap_pool_t *heap)
{
if(heap->mark)
return NULL;
heap->mark = TRUE;
return heap;
}
void jsval_release(jsval_t val)
{
switch(jsval_type(val)) {
case JSV_OBJECT:
IDispatch_Release(get_object(val));
break;
case JSV_STRING:
jsstr_release(get_string(val));
break;
case JSV_VARIANT:
VariantClear(get_variant(val));
heap_free(get_variant(val));
break;
default:
break;
}
}
static HRESULT jsval_variant(jsval_t *val, VARIANT *var)
{
VARIANT *v;
HRESULT hres;
__JSVAL_TYPE(*val) = JSV_VARIANT;
__JSVAL_VAR(*val) = v = heap_alloc(sizeof(VARIANT));
if(!v) {
*val = jsval_undefined();
return E_OUTOFMEMORY;
}
V_VT(v) = VT_EMPTY;
hres = VariantCopy(v, var);
if(FAILED(hres)) {
*val = jsval_undefined();
heap_free(v);
}
return hres;
}
HRESULT jsval_copy(jsval_t v, jsval_t *r)
{
switch(jsval_type(v)) {
case JSV_UNDEFINED:
case JSV_NULL:
case JSV_NUMBER:
case JSV_BOOL:
*r = v;
return S_OK;
case JSV_OBJECT:
IDispatch_AddRef(get_object(v));
*r = v;
return S_OK;
case JSV_STRING: {
jsstr_addref(get_string(v));
*r = v;
return S_OK;
}
case JSV_VARIANT:
return jsval_variant(r, get_variant(v));
}
assert(0);
return E_FAIL;
}
HRESULT variant_to_jsval(script_ctx_t *ctx, VARIANT *var, jsval_t *r)
{
if(V_VT(var) == (VT_VARIANT|VT_BYREF))
var = V_VARIANTREF(var);
switch(V_VT(var)) {
case VT_EMPTY:
*r = jsval_undefined();
return S_OK;
case VT_NULL:
*r = jsval_null();
return S_OK;
case VT_BOOL:
*r = jsval_bool(V_BOOL(var));
return S_OK;
case VT_I4:
*r = jsval_number(V_I4(var));
return S_OK;
case VT_R8:
*r = jsval_number(V_R8(var));
return S_OK;
case VT_BSTR: {
jsstr_t *str;
if(V_BSTR(var)) {
str = jsstr_alloc_len(V_BSTR(var), SysStringLen(V_BSTR(var)));
if(!str)
return E_OUTOFMEMORY;
}else {
str = jsstr_null_bstr();
}
*r = jsval_string(str);
return S_OK;
}
case VT_DISPATCH: {
if(!V_DISPATCH(var)) {
*r = ctx->html_mode ? jsval_null() : jsval_null_disp();
return S_OK;
}
IDispatch_AddRef(V_DISPATCH(var));
*r = jsval_disp(V_DISPATCH(var));
return S_OK;
}
case VT_I1:
*r = jsval_number(V_I1(var));
return S_OK;
case VT_UI1:
*r = jsval_number(V_UI1(var));
return S_OK;
case VT_I2:
*r = jsval_number(V_I2(var));
return S_OK;
case VT_UI2:
*r = jsval_number(V_UI2(var));
return S_OK;
case VT_INT:
*r = jsval_number(V_INT(var));
return S_OK;
case VT_UI4:
*r = jsval_number(V_UI4(var));
return S_OK;
case VT_UI8:
/*
* Native doesn't support VT_UI8 here, but it's needed for IE9+ APIs
* (native IE9 doesn't use jscript.dll for JavaScript).
*/
*r = jsval_number(V_UI8(var));
return S_OK;
case VT_R4:
*r = jsval_number(V_R4(var));
return S_OK;
case VT_CY:
/* FIXME: Native converts VT_CY to a special kind number type, which is
* never converted to VT_I4 when it's converted back to VARIANT. */
*r = jsval_number((double)V_CY(var).int64 / 10000.0);
WARN("VT_CY: %lf\n", get_number(*r));
return S_OK;
case VT_UNKNOWN:
if(V_UNKNOWN(var)) {
IDispatch *disp;
HRESULT hres;
hres = IUnknown_QueryInterface(V_UNKNOWN(var), &IID_IDispatch, (void**)&disp);
if(SUCCEEDED(hres)) {
*r = jsval_disp(disp);
return S_OK;
}
}else {
*r = ctx->html_mode ? jsval_null() : jsval_null_disp();
return S_OK;
}
/* fall through */
default:
return jsval_variant(r, var);
}
}
HRESULT jsval_to_variant(jsval_t val, VARIANT *retv)
{
switch(jsval_type(val)) {
case JSV_UNDEFINED:
V_VT(retv) = VT_EMPTY;
return S_OK;
case JSV_NULL:
if(get_bool(val)) {
V_VT(retv) = VT_DISPATCH;
V_DISPATCH(retv) = NULL;
return S_OK;
}
V_VT(retv) = VT_NULL;
return S_OK;
case JSV_OBJECT:
V_VT(retv) = VT_DISPATCH;
V_DISPATCH(retv) = get_object(val);
IDispatch_AddRef(get_object(val));
return S_OK;
case JSV_STRING:
V_VT(retv) = VT_BSTR;
return jsstr_to_bstr(get_string(val), &V_BSTR(retv));
case JSV_NUMBER: {
double n = get_number(val);
if(is_int32(n)) {
V_VT(retv) = VT_I4;
V_I4(retv) = n;
}else {
V_VT(retv) = VT_R8;
V_R8(retv) = n;
}
return S_OK;
}
case JSV_BOOL:
V_VT(retv) = VT_BOOL;
V_BOOL(retv) = get_bool(val) ? VARIANT_TRUE : VARIANT_FALSE;
return S_OK;
case JSV_VARIANT:
V_VT(retv) = VT_EMPTY;
return VariantCopy(retv, get_variant(val));
}
assert(0);
return E_FAIL;
}
/* ECMA-262 3rd Edition 9.1 */
HRESULT to_primitive(script_ctx_t *ctx, jsval_t val, jsval_t *ret, hint_t hint)
{
if(is_object_instance(val)) {
jsdisp_t *jsdisp;
jsval_t prim;
DISPID id;
HRESULT hres;
jsdisp = iface_to_jsdisp(get_object(val));
if(!jsdisp)
return disp_propget(ctx, get_object(val), DISPID_VALUE, ret);
if(hint == NO_HINT)
hint = is_class(jsdisp, JSCLASS_DATE) ? HINT_STRING : HINT_NUMBER;
/* Native implementation doesn't throw TypeErrors, returns strange values */
hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? L"toString" : L"valueOf", 0, &id);
if(SUCCEEDED(hres)) {
hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, 0, NULL, &prim);
if(FAILED(hres)) {
WARN("call error - forwarding exception\n");
jsdisp_release(jsdisp);
return hres;
}else if(!is_object_instance(prim)) {
jsdisp_release(jsdisp);
*ret = prim;
return S_OK;
}else {
IDispatch_Release(get_object(prim));
}
}
hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? L"valueOf" : L"toString", 0, &id);
if(SUCCEEDED(hres)) {
hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, 0, NULL, &prim);
if(FAILED(hres)) {
WARN("call error - forwarding exception\n");
jsdisp_release(jsdisp);
return hres;
}else if(!is_object_instance(prim)) {
jsdisp_release(jsdisp);
*ret = prim;
return S_OK;
}else {
IDispatch_Release(get_object(prim));
}
}
jsdisp_release(jsdisp);
WARN("failed\n");
return JS_E_TO_PRIMITIVE;
}
return jsval_copy(val, ret);
}
/* ECMA-262 3rd Edition 9.2 */
HRESULT to_boolean(jsval_t val, BOOL *ret)
{
switch(jsval_type(val)) {
case JSV_UNDEFINED:
case JSV_NULL:
*ret = FALSE;
return S_OK;
case JSV_OBJECT:
*ret = TRUE;
return S_OK;
case JSV_STRING:
*ret = jsstr_length(get_string(val)) != 0;
return S_OK;
case JSV_NUMBER:
*ret = !isnan(get_number(val)) && get_number(val);
return S_OK;
case JSV_BOOL:
*ret = get_bool(val);
return S_OK;
case JSV_VARIANT:
FIXME("unimplemented for variant %s\n", debugstr_variant(get_variant(val)));
return E_NOTIMPL;
}
assert(0);
return E_FAIL;
}
static int hex_to_int(WCHAR c)
{
if('0' <= c && c <= '9')
return c-'0';
if('a' <= c && c <= 'f')
return c-'a'+10;
if('A' <= c && c <= 'F')
return c-'A'+10;
return -1;
}
/* ECMA-262 3rd Edition 9.3.1 */
static HRESULT str_to_number(jsstr_t *str, double *ret)
{
const WCHAR *ptr;
BOOL neg = FALSE;
DOUBLE d = 0.0;
static const WCHAR infinityW[] = L"Infinity";
ptr = jsstr_flatten(str);
if(!ptr)
return E_OUTOFMEMORY;
while(iswspace(*ptr))
ptr++;
if(*ptr == '-') {
neg = TRUE;
ptr++;
}else if(*ptr == '+') {
ptr++;
}
if(!wcsncmp(ptr, infinityW, ARRAY_SIZE(infinityW)-1)) {
ptr += ARRAY_SIZE(infinityW) - 1;
while(*ptr && iswspace(*ptr))
ptr++;
if(*ptr)
*ret = NAN;
else
*ret = neg ? -INFINITY : INFINITY;
return S_OK;
}
if(*ptr == '0' && ptr[1] == 'x') {
DWORD l = 0;
ptr += 2;
while((l = hex_to_int(*ptr)) != -1) {
d = d*16 + l;
ptr++;
}
*ret = d;
return S_OK;
}
while(is_digit(*ptr))
d = d*10 + (*ptr++ - '0');
if(*ptr == 'e' || *ptr == 'E') {
BOOL eneg = FALSE;
LONG l = 0;
ptr++;
if(*ptr == '-') {
ptr++;
eneg = TRUE;
}else if(*ptr == '+') {
ptr++;
}
while(is_digit(*ptr))
l = l*10 + (*ptr++ - '0');
if(eneg)
l = -l;
d *= pow(10, l);
}else if(*ptr == '.') {
DOUBLE dec = 0.1;
ptr++;
while(is_digit(*ptr)) {
d += dec * (*ptr++ - '0');
dec *= 0.1;
}
}
while(iswspace(*ptr))
ptr++;
if(*ptr) {
*ret = NAN;
return S_OK;
}
if(neg)
d = -d;
*ret = d;
return S_OK;
}
/* ECMA-262 3rd Edition 9.3 */
HRESULT to_number(script_ctx_t *ctx, jsval_t val, double *ret)
{
switch(jsval_type(val)) {
case JSV_UNDEFINED:
*ret = NAN;
return S_OK;
case JSV_NULL:
*ret = 0;
return S_OK;
case JSV_NUMBER:
*ret = get_number(val);
return S_OK;
case JSV_STRING:
return str_to_number(get_string(val), ret);
case JSV_OBJECT: {
jsval_t prim;
HRESULT hres;
hres = to_primitive(ctx, val, &prim, HINT_NUMBER);
if(FAILED(hres))
return hres;
hres = to_number(ctx, prim, ret);
jsval_release(prim);
return hres;
}
case JSV_BOOL:
*ret = get_bool(val) ? 1 : 0;
return S_OK;
case JSV_VARIANT: {
const VARIANT *v = get_variant(val);
switch(V_VT(v)) {
case VT_DATE:
return variant_date_to_number(V_DATE(v), ret);
default:
FIXME("unimplemented for variant %s\n", debugstr_variant(v));
return E_NOTIMPL;
}
}
};
assert(0);
return E_FAIL;
}
/* ECMA-262 3rd Edition 9.4 */
HRESULT to_integer(script_ctx_t *ctx, jsval_t v, double *ret)
{
double n;
HRESULT hres;
hres = to_number(ctx, v, &n);
if(FAILED(hres))
return hres;
if(isnan(n))
*ret = 0;
else
*ret = n >= 0.0 ? floor(n) : -floor(-n);
return S_OK;
}
static INT32 double_to_int32(double number)
{
INT32 exp, result;
union {
double d;
INT64 n;
} bits;
bits.d = number;
exp = ((INT32)(bits.n >> 52) & 0x7ff) - 0x3ff;
/* If exponent < 0 there will be no bits to the left of the decimal point
* after rounding; if the exponent is > 83 then no bits of precision can be
* left in the low 32-bit range of the result (IEEE-754 doubles have 52 bits
* of fractional precision).
* Note this case handles 0, -0, and all infinite, NaN & denormal values. */
if(exp < 0 || exp > 83)
return 0;
/* Select the appropriate 32-bits from the floating point mantissa. If the
* exponent is 52 then the bits we need to select are already aligned to the
* lowest bits of the 64-bit integer representation of the number, no need
* to shift. If the exponent is greater than 52 we need to shift the value
* left by (exp - 52), if the value is less than 52 we need to shift right
* accordingly. */
result = (exp > 52) ? bits.n << (exp - 52) : bits.n >> (52 - exp);
/* IEEE-754 double precision values are stored omitting an implicit 1 before
* the decimal point; we need to reinsert this now. We may also the shifted
* invalid bits into the result that are not a part of the mantissa (the sign
* and exponent bits from the floatingpoint representation); mask these out. */
if(exp < 32) {
INT32 missing_one = 1 << exp;
result &= missing_one - 1;
result += missing_one;
}
/* If the input value was negative (we could test either 'number' or 'bits',
* but testing 'bits' is likely faster) invert the result appropriately. */
return bits.n < 0 ? -result : result;
}
/* ECMA-262 3rd Edition 9.5 */
HRESULT to_int32(script_ctx_t *ctx, jsval_t v, INT *ret)
{
double n;
HRESULT hres;
hres = to_number(ctx, v, &n);
if(FAILED(hres))
return hres;
*ret = double_to_int32(n);
return S_OK;
}
HRESULT to_long(script_ctx_t *ctx, jsval_t v, LONG *ret)
{
return to_int32(ctx, v, (INT*)ret);
}
/* ECMA-262 3rd Edition 9.6 */
HRESULT to_uint32(script_ctx_t *ctx, jsval_t val, UINT32 *ret)
{
double n;
HRESULT hres;
hres = to_number(ctx, val, &n);
if(FAILED(hres))
return hres;
*ret = double_to_int32(n);
return S_OK;
}
HRESULT double_to_string(double n, jsstr_t **str)
{
if(isnan(n)) {
*str = jsstr_nan();
}else if(isinf(n)) {
*str = jsstr_alloc(n<0 ? L"-Infinity" : L"Infinity");
}else if(is_int32(n)) {
WCHAR buf[12];
_ltow_s(n, buf, ARRAY_SIZE(buf), 10);
*str = jsstr_alloc(buf);
}else {
VARIANT strv, v;
HRESULT hres;
/* FIXME: Don't use VariantChangeTypeEx */
V_VT(&v) = VT_R8;
V_R8(&v) = n;
V_VT(&strv) = VT_EMPTY;
hres = VariantChangeTypeEx(&strv, &v, MAKELCID(MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),SORT_DEFAULT), 0, VT_BSTR);
if(FAILED(hres))
return hres;
*str = jsstr_alloc(V_BSTR(&strv));
SysFreeString(V_BSTR(&strv));
}
return *str ? S_OK : E_OUTOFMEMORY;
}
/* ECMA-262 3rd Edition 9.8 */
HRESULT to_string(script_ctx_t *ctx, jsval_t val, jsstr_t **str)
{
switch(jsval_type(val)) {
case JSV_UNDEFINED:
*str = jsstr_undefined();
return S_OK;
case JSV_NULL:
*str = jsstr_alloc(L"null");
break;
case JSV_NUMBER:
return double_to_string(get_number(val), str);
case JSV_STRING:
*str = jsstr_addref(get_string(val));
break;
case JSV_OBJECT: {
jsval_t prim;
HRESULT hres;
hres = to_primitive(ctx, val, &prim, HINT_STRING);
if(FAILED(hres))
return hres;
hres = to_string(ctx, prim, str);
jsval_release(prim);
return hres;
}
case JSV_BOOL:
*str = jsstr_alloc(get_bool(val) ? L"true" : L"false");
break;
default: {
const VARIANT *v = get_variant(val);
switch(V_VT(v))
{
case VT_DATE:
return variant_date_to_string(ctx, V_DATE(v), str);
default:
FIXME("unsupported %s\n", debugstr_variant(v));
return E_NOTIMPL;
}
}
}
return *str ? S_OK : E_OUTOFMEMORY;
}
HRESULT to_flat_string(script_ctx_t *ctx, jsval_t val, jsstr_t **str, const WCHAR **ret_str)
{
HRESULT hres;
hres = to_string(ctx, val, str);
if(FAILED(hres))
return hres;
*ret_str = jsstr_flatten(*str);
if(!*ret_str) {
jsstr_release(*str);
return E_OUTOFMEMORY;
}
return S_OK;
}
/* ECMA-262 3rd Edition 9.9 */
HRESULT to_object(script_ctx_t *ctx, jsval_t val, IDispatch **disp)
{
jsdisp_t *dispex;
HRESULT hres;
switch(jsval_type(val)) {
case JSV_STRING:
hres = create_string(ctx, get_string(val), &dispex);
if(FAILED(hres))
return hres;
*disp = to_disp(dispex);
break;
case JSV_NUMBER:
hres = create_number(ctx, get_number(val), &dispex);
if(FAILED(hres))
return hres;
*disp = to_disp(dispex);
break;
case JSV_OBJECT:
*disp = get_object(val);
IDispatch_AddRef(*disp);
break;
case JSV_BOOL:
hres = create_bool(ctx, get_bool(val), &dispex);
if(FAILED(hres))
return hres;
*disp = to_disp(dispex);
break;
case JSV_NULL:
if(is_null_disp(val))
return JS_E_OBJECT_REQUIRED;
/* fall through */
case JSV_UNDEFINED:
WARN("object expected\n");
return JS_E_OBJECT_EXPECTED;
case JSV_VARIANT:
switch(V_VT(get_variant(val))) {
case VT_ARRAY|VT_VARIANT:
hres = create_vbarray(ctx, V_ARRAY(get_variant(val)), &dispex);
if(FAILED(hres))
return hres;
*disp = to_disp(dispex);
break;
default:
FIXME("Unsupported %s\n", debugstr_variant(get_variant(val)));
return E_NOTIMPL;
}
break;
}
return S_OK;
}
HRESULT variant_change_type(script_ctx_t *ctx, VARIANT *dst, VARIANT *src, VARTYPE vt)
{
jsexcept_t ei;
jsval_t val;
HRESULT hres;
hres = variant_to_jsval(ctx, src, &val);
if(FAILED(hres))
return hres;
enter_script(ctx, &ei);
switch(vt) {
case VT_I2:
case VT_I4: {
INT i;
hres = to_int32(ctx, val, &i);
if(SUCCEEDED(hres)) {
if(vt == VT_I4)
V_I4(dst) = i;
else
V_I2(dst) = i;
}
break;
}
case VT_UI2: {
UINT32 i;
hres = to_uint32(ctx, val, &i);
if(SUCCEEDED(hres))
V_UI2(dst) = i;
break;
}
case VT_R8: {
double n;
hres = to_number(ctx, val, &n);
if(SUCCEEDED(hres))
V_R8(dst) = n;
break;
}
case VT_R4: {
double n;
hres = to_number(ctx, val, &n);
if(SUCCEEDED(hres))
V_R4(dst) = n;
break;
}
case VT_BOOL: {
BOOL b;
hres = to_boolean(val, &b);
if(SUCCEEDED(hres))
V_BOOL(dst) = b ? VARIANT_TRUE : VARIANT_FALSE;
break;
}
case VT_BSTR: {
jsstr_t *str;
hres = to_string(ctx, val, &str);
if(FAILED(hres))
break;
hres = jsstr_to_bstr(str, &V_BSTR(dst));
break;
}
case VT_EMPTY:
hres = V_VT(src) == VT_EMPTY ? S_OK : E_NOTIMPL;
break;
case VT_NULL:
hres = V_VT(src) == VT_NULL ? S_OK : E_NOTIMPL;
break;
default:
FIXME("vt %d not implemented\n", vt);
hres = E_NOTIMPL;
}
jsval_release(val);
leave_script(ctx, hres);
if(FAILED(hres))
return hres;
V_VT(dst) = vt;
return S_OK;
}
static inline JSCaller *impl_from_IServiceProvider(IServiceProvider *iface)
{
return CONTAINING_RECORD(iface, JSCaller, IServiceProvider_iface);
}
static HRESULT WINAPI JSCaller_QueryInterface(IServiceProvider *iface, REFIID riid, void **ppv)
{
JSCaller *This = impl_from_IServiceProvider(iface);
if(IsEqualGUID(&IID_IUnknown, riid)) {
TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
*ppv = &This->IServiceProvider_iface;
}else if(IsEqualGUID(&IID_IServiceProvider, riid)) {
TRACE("(%p)->(IID_IServiceProvider %p)\n", This, ppv);
*ppv = &This->IServiceProvider_iface;
}else {
WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI JSCaller_AddRef(IServiceProvider *iface)
{
JSCaller *This = impl_from_IServiceProvider(iface);
LONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) ref=%ld\n", This, ref);
return ref;
}
static ULONG WINAPI JSCaller_Release(IServiceProvider *iface)
{
JSCaller *This = impl_from_IServiceProvider(iface);
LONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) ref=%ld\n", This, ref);
if(!ref) {
assert(!This->ctx);
heap_free(This);
}
return ref;
}
static HRESULT WINAPI JSCaller_QueryService(IServiceProvider *iface, REFGUID guidService,
REFIID riid, void **ppv)
{
JSCaller *This = impl_from_IServiceProvider(iface);
if(IsEqualGUID(guidService, &SID_VariantConversion) && This->ctx && This->ctx->active_script) {
TRACE("(%p)->(SID_VariantConversion)\n", This);
return IActiveScript_QueryInterface(This->ctx->active_script, riid, ppv);
}
FIXME("(%p)->(%s %s %p)\n", This, debugstr_guid(guidService), debugstr_guid(riid), ppv);
*ppv = NULL;
return E_NOINTERFACE;
}
static const IServiceProviderVtbl ServiceProviderVtbl = {
JSCaller_QueryInterface,
JSCaller_AddRef,
JSCaller_Release,
JSCaller_QueryService
};
HRESULT create_jscaller(script_ctx_t *ctx)
{
JSCaller *ret;
ret = heap_alloc(sizeof(*ret));
if(!ret)
return E_OUTOFMEMORY;
ret->IServiceProvider_iface.lpVtbl = &ServiceProviderVtbl;
ret->ref = 1;
ret->ctx = ctx;
ctx->jscaller = ret;
return S_OK;
}
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