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wine/dlls/jscript/array.c
Gabriel Ivăncescu 36d96b0fa0 jscript: Implement Array.prototype.lastIndexOf. 
Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2022-05-03 20:25:25 +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 "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(jscript);
typedef struct {
jsdisp_t dispex;
DWORD length;
} ArrayInstance;
static inline ArrayInstance *array_from_jsdisp(jsdisp_t *jsdisp)
{
return CONTAINING_RECORD(jsdisp, ArrayInstance, dispex);
}
static inline ArrayInstance *array_this(jsval_t vthis)
{
jsdisp_t *jsdisp = is_object_instance(vthis) ? to_jsdisp(get_object(vthis)) : NULL;
return (jsdisp && is_class(jsdisp, JSCLASS_ARRAY)) ? array_from_jsdisp(jsdisp) : NULL;
}
unsigned array_get_length(jsdisp_t *array)
{
assert(is_class(array, JSCLASS_ARRAY));
return array_from_jsdisp(array)->length;
}
static HRESULT get_length(script_ctx_t *ctx, jsval_t vthis, jsdisp_t **jsthis, UINT32 *ret)
{
jsdisp_t *jsdisp;
IDispatch *disp;
jsval_t val;
HRESULT hres;
hres = to_object(ctx, vthis, &disp);
if(FAILED(hres))
return hres;
jsdisp = iface_to_jsdisp(disp);
IDispatch_Release(disp);
if(!jsdisp)
return JS_E_JSCRIPT_EXPECTED;
*jsthis = jsdisp;
if(is_class(jsdisp, JSCLASS_ARRAY)) {
*ret = array_from_jsdisp(jsdisp)->length;
return S_OK;
}
hres = jsdisp_propget_name(jsdisp, L"length", &val);
if(SUCCEEDED(hres)) {
hres = to_uint32(ctx, val, ret);
jsval_release(val);
if(SUCCEEDED(hres))
return hres;
}
jsdisp_release(jsdisp);
return hres;
}
static HRESULT set_length(jsdisp_t *obj, DWORD length)
{
if(is_class(obj, JSCLASS_ARRAY)) {
array_from_jsdisp(obj)->length = length;
return S_OK;
}
return jsdisp_propput_name(obj, L"length", jsval_number(length));
}
static WCHAR *idx_to_str(DWORD idx, WCHAR *ptr)
{
if(!idx) {
*ptr = '0';
return ptr;
}
while(idx) {
*ptr-- = '0' + (idx%10);
idx /= 10;
}
return ptr+1;
}
static HRESULT Array_get_length(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t *r)
{
TRACE("%p\n", jsthis);
*r = jsval_number(array_from_jsdisp(jsthis)->length);
return S_OK;
}
static HRESULT Array_set_length(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t value)
{
ArrayInstance *This = array_from_jsdisp(jsthis);
DOUBLE len = -1;
DWORD i;
HRESULT hres;
TRACE("%p %ld\n", This, This->length);
hres = to_number(ctx, value, &len);
if(FAILED(hres))
return hres;
len = floor(len);
if(len!=(DWORD)len)
return JS_E_INVALID_LENGTH;
for(i=len; i < This->length; i++) {
hres = jsdisp_delete_idx(&This->dispex, i);
if(FAILED(hres))
return hres;
}
This->length = len;
return S_OK;
}
static HRESULT concat_array(jsdisp_t *array, ArrayInstance *obj, DWORD *len)
{
jsval_t val;
DWORD i;
HRESULT hres;
for(i=0; i < obj->length; i++) {
hres = jsdisp_get_idx(&obj->dispex, i, &val);
if(hres == DISP_E_UNKNOWNNAME)
continue;
if(FAILED(hres))
return hres;
hres = jsdisp_propput_idx(array, *len+i, val);
jsval_release(val);
if(FAILED(hres))
return hres;
}
*len += obj->length;
return S_OK;
}
static HRESULT concat_obj(jsdisp_t *array, IDispatch *obj, DWORD *len)
{
jsdisp_t *jsobj;
HRESULT hres;
jsobj = iface_to_jsdisp(obj);
if(jsobj) {
if(is_class(jsobj, JSCLASS_ARRAY)) {
hres = concat_array(array, array_from_jsdisp(jsobj), len);
jsdisp_release(jsobj);
return hres;
}
jsdisp_release(jsobj);
}
return jsdisp_propput_idx(array, (*len)++, jsval_disp(obj));
}
static HRESULT Array_concat(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
IDispatch *jsthis;
jsdisp_t *ret;
DWORD len = 0;
HRESULT hres;
TRACE("\n");
hres = to_object(ctx, vthis, &jsthis);
if(FAILED(hres))
return hres;
hres = create_array(ctx, 0, &ret);
if(FAILED(hres))
goto done;
hres = concat_obj(ret, jsthis, &len);
if(SUCCEEDED(hres)) {
DWORD i;
for(i=0; i < argc; i++) {
if(is_object_instance(argv[i]))
hres = concat_obj(ret, get_object(argv[i]), &len);
else
hres = jsdisp_propput_idx(ret, len++, argv[i]);
if(FAILED(hres))
break;
}
}
if(FAILED(hres))
goto done;
if(r)
*r = jsval_obj(ret);
else
jsdisp_release(ret);
done:
IDispatch_Release(jsthis);
return S_OK;
}
static HRESULT array_join(script_ctx_t *ctx, jsdisp_t *array, DWORD length, const WCHAR *sep,
unsigned seplen, HRESULT (*to_string)(script_ctx_t*,jsval_t,jsstr_t**), jsval_t *r)
{
jsstr_t **str_tab, *ret = NULL;
jsval_t val;
DWORD i;
HRESULT hres = E_FAIL;
if(!length) {
if(r)
*r = jsval_string(jsstr_empty());
return S_OK;
}
str_tab = heap_alloc_zero(length * sizeof(*str_tab));
if(!str_tab)
return E_OUTOFMEMORY;
for(i=0; i < length; i++) {
hres = jsdisp_get_idx(array, i, &val);
if(hres == DISP_E_UNKNOWNNAME) {
hres = S_OK;
continue;
} else if(FAILED(hres))
break;
if(!is_undefined(val) && !is_null(val)) {
hres = to_string(ctx, val, str_tab+i);
jsval_release(val);
if(FAILED(hres))
break;
}
}
if(SUCCEEDED(hres)) {
DWORD len = 0;
if(str_tab[0])
len = jsstr_length(str_tab[0]);
for(i=1; i < length; i++) {
len += seplen;
if(str_tab[i])
len += jsstr_length(str_tab[i]);
if(len > JSSTR_MAX_LENGTH) {
hres = E_OUTOFMEMORY;
break;
}
}
if(SUCCEEDED(hres)) {
WCHAR *ptr = NULL;
ret = jsstr_alloc_buf(len, &ptr);
if(ret) {
if(str_tab[0])
ptr += jsstr_flush(str_tab[0], ptr);
for(i=1; i < length; i++) {
if(seplen) {
memcpy(ptr, sep, seplen*sizeof(WCHAR));
ptr += seplen;
}
if(str_tab[i])
ptr += jsstr_flush(str_tab[i], ptr);
}
}else {
hres = E_OUTOFMEMORY;
}
}
}
for(i=0; i < length; i++) {
if(str_tab[i])
jsstr_release(str_tab[i]);
}
heap_free(str_tab);
if(FAILED(hres))
return hres;
TRACE("= %s\n", debugstr_jsstr(ret));
if(r)
*r = jsval_string(ret);
else
jsstr_release(ret);
return S_OK;
}
/* ECMA-262 3rd Edition 15.4.4.5 */
static HRESULT Array_join(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
UINT32 length;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(argc) {
const WCHAR *sep;
jsstr_t *sep_str;
hres = to_flat_string(ctx, argv[0], &sep_str, &sep);
if(FAILED(hres))
goto done;
hres = array_join(ctx, jsthis, length, sep, jsstr_length(sep_str), to_string, r);
jsstr_release(sep_str);
}else {
hres = array_join(ctx, jsthis, length, L",", 1, to_string, r);
}
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_pop(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
jsval_t val;
UINT32 length;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(!length) {
hres = set_length(jsthis, 0);
if(FAILED(hres))
goto done;
if(r)
*r = jsval_undefined();
goto done;
}
length--;
hres = jsdisp_get_idx(jsthis, length, &val);
if(SUCCEEDED(hres))
hres = jsdisp_delete_idx(jsthis, length);
else if(hres == DISP_E_UNKNOWNNAME) {
val = jsval_undefined();
hres = S_OK;
}else
goto done;
if(SUCCEEDED(hres))
hres = set_length(jsthis, length);
if(FAILED(hres)) {
jsval_release(val);
goto done;
}
if(r)
*r = val;
else
jsval_release(val);
done:
jsdisp_release(jsthis);
return hres;
}
/* ECMA-262 3rd Edition 15.4.4.7 */
static HRESULT Array_push(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
UINT32 length = 0;
unsigned i;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
for(i=0; i < argc; i++) {
hres = jsdisp_propput_idx(jsthis, length+i, argv[i]);
if(FAILED(hres))
goto done;
}
hres = set_length(jsthis, length+argc);
if(FAILED(hres))
goto done;
if(r)
*r = jsval_number(length+argc);
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_reverse(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
UINT32 length, k, l;
jsval_t v1, v2;
HRESULT hres1, hres2;
TRACE("\n");
hres1 = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres1))
return hres1;
for(k=0; k<length/2; k++) {
l = length-k-1;
hres1 = jsdisp_get_idx(jsthis, k, &v1);
if(FAILED(hres1) && hres1!=DISP_E_UNKNOWNNAME)
goto done;
hres2 = jsdisp_get_idx(jsthis, l, &v2);
if(FAILED(hres2) && hres2!=DISP_E_UNKNOWNNAME) {
jsval_release(v1);
hres1 = hres2;
goto done;
}
if(hres1 == DISP_E_UNKNOWNNAME)
hres1 = jsdisp_delete_idx(jsthis, l);
else
hres1 = jsdisp_propput_idx(jsthis, l, v1);
if(FAILED(hres1)) {
jsval_release(v1);
jsval_release(v2);
goto done;
}
if(hres2 == DISP_E_UNKNOWNNAME)
hres2 = jsdisp_delete_idx(jsthis, k);
else
hres2 = jsdisp_propput_idx(jsthis, k, v2);
if(FAILED(hres2)) {
jsval_release(v2);
hres1 = hres2;
goto done;
}
}
if(r)
*r = jsval_obj(jsdisp_addref(jsthis));
done:
jsdisp_release(jsthis);
return hres1;
}
/* ECMA-262 3rd Edition 15.4.4.9 */
static HRESULT Array_shift(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
UINT32 length = 0, i;
jsval_t v, ret;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(!length) {
hres = set_length(jsthis, 0);
if(FAILED(hres))
goto done;
if(r)
*r = jsval_undefined();
goto done;
}
hres = jsdisp_get_idx(jsthis, 0, &ret);
if(hres == DISP_E_UNKNOWNNAME) {
ret = jsval_undefined();
hres = S_OK;
}
for(i=1; SUCCEEDED(hres) && i<length; i++) {
hres = jsdisp_get_idx(jsthis, i, &v);
if(hres == DISP_E_UNKNOWNNAME)
hres = jsdisp_delete_idx(jsthis, i-1);
else if(SUCCEEDED(hres))
hres = jsdisp_propput_idx(jsthis, i-1, v);
}
if(SUCCEEDED(hres)) {
hres = jsdisp_delete_idx(jsthis, length-1);
if(SUCCEEDED(hres))
hres = set_length(jsthis, length-1);
}
if(FAILED(hres))
goto done;
if(r)
*r = ret;
else
jsval_release(ret);
done:
jsdisp_release(jsthis);
return hres;
}
/* ECMA-262 3rd Edition 15.4.4.10 */
static HRESULT Array_slice(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
{
jsdisp_t *arr, *jsthis;
DOUBLE range;
UINT32 length, start, end, idx;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(argc) {
hres = to_number(ctx, argv[0], &range);
if(FAILED(hres))
goto done;
range = floor(range);
if(-range>length || isnan(range)) start = 0;
else if(range < 0) start = range+length;
else if(range <= length) start = range;
else start = length;
}
else start = 0;
if(argc > 1) {
hres = to_number(ctx, argv[1], &range);
if(FAILED(hres))
goto done;
range = floor(range);
if(-range>length) end = 0;
else if(range < 0) end = range+length;
else if(range <= length) end = range;
else end = length;
}
else end = length;
hres = create_array(ctx, (end>start)?end-start:0, &arr);
if(FAILED(hres))
goto done;
for(idx=start; idx<end; idx++) {
jsval_t v;
hres = jsdisp_get_idx(jsthis, idx, &v);
if(hres == DISP_E_UNKNOWNNAME)
continue;
if(SUCCEEDED(hres)) {
hres = jsdisp_propput_idx(arr, idx-start, v);
jsval_release(v);
}
if(FAILED(hres)) {
jsdisp_release(arr);
goto done;
}
}
if(r)
*r = jsval_obj(arr);
else
jsdisp_release(arr);
hres = S_OK;
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT sort_cmp(script_ctx_t *ctx, jsdisp_t *cmp_func, jsval_t v1, jsval_t v2, INT *cmp)
{
HRESULT hres;
if(cmp_func) {
jsval_t args[2] = {v1, v2};
jsval_t res;
double n;
hres = jsdisp_call_value(cmp_func, NULL, DISPATCH_METHOD, 2, args, &res);
if(FAILED(hres))
return hres;
hres = to_number(ctx, res, &n);
jsval_release(res);
if(FAILED(hres))
return hres;
if(n == 0)
*cmp = 0;
*cmp = n > 0.0 ? 1 : -1;
}else if(is_undefined(v1)) {
*cmp = is_undefined(v2) ? 0 : 1;
}else if(is_undefined(v2)) {
*cmp = -1;
}else if(is_number(v1) && is_number(v2)) {
double d = get_number(v1)-get_number(v2);
if(d > 0.0)
*cmp = 1;
else
*cmp = d < -0.0 ? -1 : 0;
}else {
jsstr_t *x, *y;
hres = to_string(ctx, v1, &x);
if(FAILED(hres))
return hres;
hres = to_string(ctx, v2, &y);
if(SUCCEEDED(hres)) {
*cmp = jsstr_cmp(x, y);
jsstr_release(y);
}
jsstr_release(x);
if(FAILED(hres))
return hres;
}
return S_OK;
}
/* ECMA-262 3rd Edition 15.4.4.11 */
static HRESULT Array_sort(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis, *cmp_func = NULL;
jsval_t *vtab, **sorttab = NULL;
UINT32 length;
DWORD i;
HRESULT hres = S_OK;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(argc >= 1) {
if(is_object_instance(argv[0])) {
if(argc > 1 && ctx->version < SCRIPTLANGUAGEVERSION_ES5) {
WARN("invalid arg_cnt %d\n", argc);
hres = JS_E_JSCRIPT_EXPECTED;
goto done;
}
cmp_func = iface_to_jsdisp(get_object(argv[0]));
if(!cmp_func || !is_class(cmp_func, JSCLASS_FUNCTION)) {
WARN("cmp_func is not a function\n");
if(cmp_func)
jsdisp_release(cmp_func);
hres = JS_E_JSCRIPT_EXPECTED;
goto done;
}
}else if(ctx->version >= SCRIPTLANGUAGEVERSION_ES5 ? !is_undefined(argv[0]) :
(!is_null(argv[0]) || is_null_disp(argv[0]))) {
WARN("invalid arg %s\n", debugstr_jsval(argv[0]));
hres = JS_E_JSCRIPT_EXPECTED;
goto done;
}
}
if(!length) {
if(cmp_func)
jsdisp_release(cmp_func);
if(r)
*r = jsval_obj(jsdisp_addref(jsthis));
goto done;
}
vtab = heap_alloc_zero(length * sizeof(*vtab));
if(vtab) {
for(i=0; i<length; i++) {
hres = jsdisp_get_idx(jsthis, i, vtab+i);
if(hres == DISP_E_UNKNOWNNAME) {
vtab[i] = jsval_undefined();
hres = S_OK;
} else if(FAILED(hres)) {
WARN("Could not get elem %ld: %08lx\n", i, hres);
break;
}
}
}else {
hres = E_OUTOFMEMORY;
}
if(SUCCEEDED(hres)) {
sorttab = heap_alloc(length*2*sizeof(*sorttab));
if(!sorttab)
hres = E_OUTOFMEMORY;
}
/* merge-sort */
if(SUCCEEDED(hres)) {
jsval_t *tmpv, **tmpbuf;
INT cmp;
tmpbuf = sorttab + length;
for(i=0; i < length; i++)
sorttab[i] = vtab+i;
for(i=0; i < length/2; i++) {
hres = sort_cmp(ctx, cmp_func, *sorttab[2*i+1], *sorttab[2*i], &cmp);
if(FAILED(hres))
break;
if(cmp < 0) {
tmpv = sorttab[2*i];
sorttab[2*i] = sorttab[2*i+1];
sorttab[2*i+1] = tmpv;
}
}
if(SUCCEEDED(hres)) {
DWORD k, a, b, bend;
for(k=2; k < length; k *= 2) {
for(i=0; i+k < length; i += 2*k) {
a = b = 0;
if(i+2*k <= length)
bend = k;
else
bend = length - (i+k);
memcpy(tmpbuf, sorttab+i, k*sizeof(jsval_t*));
while(a < k && b < bend) {
hres = sort_cmp(ctx, cmp_func, *tmpbuf[a], *sorttab[i+k+b], &cmp);
if(FAILED(hres))
break;
if(cmp < 0) {
sorttab[i+a+b] = tmpbuf[a];
a++;
}else {
sorttab[i+a+b] = sorttab[i+k+b];
b++;
}
}
if(FAILED(hres))
break;
if(a < k)
memcpy(sorttab+i+a+b, tmpbuf+a, (k-a)*sizeof(jsval_t*));
}
if(FAILED(hres))
break;
}
}
for(i=0; SUCCEEDED(hres) && i < length; i++)
hres = jsdisp_propput_idx(jsthis, i, *sorttab[i]);
}
if(vtab) {
for(i=0; i < length; i++)
jsval_release(vtab[i]);
heap_free(vtab);
}
heap_free(sorttab);
if(cmp_func)
jsdisp_release(cmp_func);
if(FAILED(hres))
goto done;
if(r)
*r = jsval_obj(jsdisp_addref(jsthis));
done:
jsdisp_release(jsthis);
return hres;
}
/* ECMA-262 3rd Edition 15.4.4.12 */
static HRESULT Array_splice(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
UINT32 length, start=0, delete_cnt=0, i, add_args = 0;
jsdisp_t *ret_array = NULL, *jsthis;
jsval_t val;
double d;
int n;
HRESULT hres = S_OK;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(argc) {
hres = to_integer(ctx, argv[0], &d);
if(FAILED(hres))
goto done;
if(is_int32(d)) {
if((n = d) >= 0)
start = min(n, length);
else
start = -n > length ? 0 : length + n;
}else {
start = d < 0.0 ? 0 : length;
}
}
if(argc >= 2) {
hres = to_integer(ctx, argv[1], &d);
if(FAILED(hres))
goto done;
if(is_int32(d)) {
if((n = d) > 0)
delete_cnt = min(n, length-start);
}else if(d > 0.0) {
delete_cnt = length-start;
}
add_args = argc-2;
}
if(r) {
hres = create_array(ctx, 0, &ret_array);
if(FAILED(hres))
goto done;
for(i=0; SUCCEEDED(hres) && i < delete_cnt; i++) {
hres = jsdisp_get_idx(jsthis, start+i, &val);
if(hres == DISP_E_UNKNOWNNAME) {
hres = S_OK;
}else if(SUCCEEDED(hres)) {
hres = jsdisp_propput_idx(ret_array, i, val);
jsval_release(val);
}
}
if(SUCCEEDED(hres))
hres = jsdisp_propput_name(ret_array, L"length", jsval_number(delete_cnt));
}
if(add_args < delete_cnt) {
for(i = start; SUCCEEDED(hres) && i < length-delete_cnt; i++) {
hres = jsdisp_get_idx(jsthis, i+delete_cnt, &val);
if(hres == DISP_E_UNKNOWNNAME) {
hres = jsdisp_delete_idx(jsthis, i+add_args);
}else if(SUCCEEDED(hres)) {
hres = jsdisp_propput_idx(jsthis, i+add_args, val);
jsval_release(val);
}
}
for(i=length; SUCCEEDED(hres) && i != length-delete_cnt+add_args; i--)
hres = jsdisp_delete_idx(jsthis, i-1);
}else if(add_args > delete_cnt) {
for(i=length-delete_cnt; SUCCEEDED(hres) && i != start; i--) {
hres = jsdisp_get_idx(jsthis, i+delete_cnt-1, &val);
if(hres == DISP_E_UNKNOWNNAME) {
hres = jsdisp_delete_idx(jsthis, i+add_args-1);
}else if(SUCCEEDED(hres)) {
hres = jsdisp_propput_idx(jsthis, i+add_args-1, val);
jsval_release(val);
}
}
}
for(i=0; SUCCEEDED(hres) && i < add_args; i++)
hres = jsdisp_propput_idx(jsthis, start+i, argv[i+2]);
if(SUCCEEDED(hres))
hres = jsdisp_propput_name(jsthis, L"length", jsval_number(length-delete_cnt+add_args));
if(FAILED(hres)) {
if(ret_array)
jsdisp_release(ret_array);
goto done;
}
if(r)
*r = jsval_obj(ret_array);
done:
jsdisp_release(jsthis);
return hres;
}
/* ECMA-262 3rd Edition 15.4.4.2 */
static HRESULT Array_toString(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
ArrayInstance *array;
TRACE("\n");
array = array_this(vthis);
if(!array)
return JS_E_ARRAY_EXPECTED;
return array_join(ctx, &array->dispex, array->length, L",", 1, to_string, r);
}
static HRESULT to_locale_string(script_ctx_t *ctx, jsval_t val, jsstr_t **str)
{
jsdisp_t *jsdisp;
IDispatch *obj;
HRESULT hres;
switch(jsval_type(val)) {
case JSV_OBJECT:
hres = disp_call_name(ctx, get_object(val), L"toLocaleString", DISPATCH_METHOD, 0, NULL, &val);
if(FAILED(hres)) {
if(hres == JS_E_INVALID_PROPERTY && ctx->version >= SCRIPTLANGUAGEVERSION_ES5)
hres = JS_E_FUNCTION_EXPECTED;
return hres;
}
break;
case JSV_NUMBER:
if(ctx->version >= SCRIPTLANGUAGEVERSION_ES5)
return localize_number(ctx, get_number(val), FALSE, str);
/* fall through */
default:
if(ctx->version >= SCRIPTLANGUAGEVERSION_ES5)
break;
hres = to_object(ctx, val, &obj);
if(FAILED(hres))
return hres;
jsdisp = as_jsdisp(obj);
hres = jsdisp_call_name(jsdisp, L"toLocaleString", DISPATCH_METHOD, 0, NULL, &val);
jsdisp_release(jsdisp);
if(FAILED(hres))
return hres;
break;
}
return to_string(ctx, val, str);
}
static HRESULT Array_toLocaleString(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
UINT32 length;
HRESULT hres;
WCHAR buf[5];
int len;
TRACE("\n");
if(ctx->version < SCRIPTLANGUAGEVERSION_ES5) {
ArrayInstance *array = array_this(vthis);
if(!array)
return JS_E_ARRAY_EXPECTED;
jsthis = jsdisp_addref(&array->dispex);
length = array->length;
}else {
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
}
if(!(len = GetLocaleInfoW(ctx->lcid, LOCALE_SLIST, buf, ARRAY_SIZE(buf) - 1))) {
buf[len++] = ',';
len++;
}
buf[len - 1] = ' ';
buf[len] = '\0';
hres = array_join(ctx, jsthis, length, buf, len, to_locale_string, r);
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_every(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
IDispatch *context_obj = NULL, *callback;
jsval_t value, args[3], res;
BOOL boolval, ret = TRUE;
unsigned length, i;
jsdisp_t *jsthis;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
/* FIXME: check IsCallable */
if(!argc || !is_object_instance(argv[0])) {
FIXME("Invalid arg %s\n", debugstr_jsval(argc ? argv[0] : jsval_undefined()));
hres = E_INVALIDARG;
goto done;
}
callback = get_object(argv[0]);
if(argc > 1 && !is_undefined(argv[1])) {
if(!is_object_instance(argv[1])) {
FIXME("Unsupported context this %s\n", debugstr_jsval(argv[1]));
hres = E_NOTIMPL;
goto done;
}
context_obj = get_object(argv[1]);
}
for(i = 0; i < length; i++) {
hres = jsdisp_get_idx(jsthis, i, &value);
if(FAILED(hres)) {
if(hres == DISP_E_UNKNOWNNAME)
continue;
goto done;
}
args[0] = value;
args[1] = jsval_number(i);
args[2] = jsval_obj(jsthis);
hres = disp_call_value(ctx, callback, context_obj, DISPATCH_METHOD, ARRAY_SIZE(args), args, &res);
jsval_release(value);
if(FAILED(hres))
goto done;
hres = to_boolean(res, &boolval);
jsval_release(res);
if(FAILED(hres))
goto done;
if(!boolval) {
ret = FALSE;
break;
}
}
if(r)
*r = jsval_bool(ret);
hres = S_OK;
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_filter(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
IDispatch *context_obj = NULL, *callback;
jsval_t value, args[3], res;
unsigned length, i, j = 0;
jsdisp_t *jsthis, *arr;
HRESULT hres;
BOOL boolval;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
/* FIXME: check IsCallable */
if(!argc || !is_object_instance(argv[0])) {
FIXME("Invalid arg %s\n", debugstr_jsval(argc ? argv[0] : jsval_undefined()));
hres = E_INVALIDARG;
goto done;
}
callback = get_object(argv[0]);
if(argc > 1 && !is_undefined(argv[1])) {
if(!is_object_instance(argv[1])) {
FIXME("Unsupported context this %s\n", debugstr_jsval(argv[1]));
hres = E_NOTIMPL;
goto done;
}
context_obj = get_object(argv[1]);
}
hres = create_array(ctx, 0, &arr);
if(FAILED(hres))
goto done;
for(i = 0; i < length; i++) {
hres = jsdisp_get_idx(jsthis, i, &value);
if(FAILED(hres)) {
if(hres == DISP_E_UNKNOWNNAME) {
hres = S_OK;
continue;
}
break;
}
args[0] = value;
args[1] = jsval_number(i);
args[2] = jsval_obj(jsthis);
hres = disp_call_value(ctx, callback, context_obj, DISPATCH_METHOD, ARRAY_SIZE(args), args, &res);
if(SUCCEEDED(hres)) {
hres = to_boolean(res, &boolval);
jsval_release(res);
if(SUCCEEDED(hres) && boolval)
hres = jsdisp_propput_idx(arr, j++, value);
}
jsval_release(value);
if(FAILED(hres))
break;
}
if(FAILED(hres)) {
jsdisp_release(arr);
goto done;
}
set_length(arr, j);
if(r)
*r = jsval_obj(arr);
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_forEach(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
IDispatch *context_obj = NULL, *callback;
jsval_t value, args[3], res;
jsdisp_t *jsthis;
unsigned length, i;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
/* Fixme check IsCallable */
if(!argc || !is_object_instance(argv[0])) {
FIXME("Invalid arg %s\n", debugstr_jsval(argc ? argv[0] : jsval_undefined()));
hres = E_INVALIDARG;
goto done;
}
callback = get_object(argv[0]);
if(argc > 1 && !is_undefined(argv[1])) {
if(!is_object_instance(argv[1])) {
FIXME("Unsupported context this %s\n", debugstr_jsval(argv[1]));
hres = E_NOTIMPL;
goto done;
}
context_obj = get_object(argv[1]);
}
for(i = 0; i < length; i++) {
hres = jsdisp_get_idx(jsthis, i, &value);
if(hres == DISP_E_UNKNOWNNAME)
continue;
if(FAILED(hres))
goto done;
args[0] = value;
args[1] = jsval_number(i);
args[2] = jsval_obj(jsthis);
hres = disp_call_value(ctx, callback, context_obj, DISPATCH_METHOD, ARRAY_SIZE(args), args, &res);
jsval_release(value);
if(FAILED(hres))
goto done;
jsval_release(res);
}
if(r) *r = jsval_undefined();
hres = S_OK;
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_indexOf(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
unsigned length, i, from = 0;
jsval_t search, value;
BOOL eq;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(!length) {
if(r) *r = jsval_number(-1);
goto done;
}
search = argc ? argv[0] : jsval_undefined();
if(argc > 1) {
double from_arg;
hres = to_integer(ctx, argv[1], &from_arg);
if(FAILED(hres))
goto done;
if(from_arg >= 0)
from = min(from_arg, length);
else
from = max(from_arg + length, 0);
}
for(i = from; i < length; i++) {
hres = jsdisp_get_idx(jsthis, i, &value);
if(hres == DISP_E_UNKNOWNNAME)
continue;
if(FAILED(hres))
goto done;
hres = jsval_strict_equal(value, search, &eq);
jsval_release(value);
if(FAILED(hres))
goto done;
if(eq) {
if(r) *r = jsval_number(i);
goto done;
}
}
if(r) *r = jsval_number(-1);
hres = S_OK;
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_lastIndexOf(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsval_t search, value;
unsigned i, length;
jsdisp_t *jsthis;
HRESULT hres;
BOOL eq;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(!length)
goto notfound;
search = argc ? argv[0] : jsval_undefined();
i = length - 1;
if(argc > 1) {
double from_arg;
hres = to_integer(ctx, argv[1], &from_arg);
if(FAILED(hres))
goto done;
if(from_arg >= 0.0)
i = min(from_arg, i);
else {
from_arg += length;
if(from_arg < 0.0)
goto notfound;
i = from_arg;
}
}
do {
hres = jsdisp_get_idx(jsthis, i, &value);
if(hres == DISP_E_UNKNOWNNAME)
continue;
if(FAILED(hres))
goto done;
hres = jsval_strict_equal(value, search, &eq);
jsval_release(value);
if(FAILED(hres))
goto done;
if(eq) {
if(r) *r = jsval_number(i);
goto done;
}
} while(i--);
notfound:
if(r) *r = jsval_number(-1);
hres = S_OK;
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_map(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
{
IDispatch *context_this = NULL, *callback;
jsval_t callback_args[3], mapped_value;
jsdisp_t *jsthis, *array;
UINT32 length, k;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres)) {
FIXME("Could not get length\n");
return hres;
}
/* FIXME: check IsCallable */
if(!argc || !is_object_instance(argv[0])) {
FIXME("Invalid arg %s\n", debugstr_jsval(argc ? argv[0] : jsval_undefined()));
hres = E_INVALIDARG;
goto done;
}
callback = get_object(argv[0]);
if(argc > 1) {
if(is_object_instance(argv[1])) {
context_this = get_object(argv[1]);
}else if(!is_undefined(argv[1])) {
FIXME("Unsupported context this %s\n", debugstr_jsval(argv[1]));
hres = E_NOTIMPL;
goto done;
}
}
hres = create_array(ctx, length, &array);
if(FAILED(hres))
goto done;
for(k = 0; k < length; k++) {
hres = jsdisp_get_idx(jsthis, k, &callback_args[0]);
if(hres == DISP_E_UNKNOWNNAME)
continue;
if(FAILED(hres))
break;
callback_args[1] = jsval_number(k);
callback_args[2] = jsval_obj(jsthis);
hres = disp_call_value(ctx, callback, context_this, DISPATCH_METHOD, 3, callback_args, &mapped_value);
jsval_release(callback_args[0]);
if(FAILED(hres))
break;
hres = jsdisp_propput_idx(array, k, mapped_value);
if(FAILED(hres))
break;
}
if(SUCCEEDED(hres) && r)
*r = jsval_obj(array);
else
jsdisp_release(array);
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_reduce(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
{
IDispatch *context_this = NULL, *callback;
jsval_t callback_args[4], acc, new_acc;
BOOL have_value = FALSE;
jsdisp_t *jsthis;
UINT32 length, k;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres)) {
FIXME("Could not get length\n");
return hres;
}
/* Fixme check IsCallable */
if(!argc || !is_object_instance(argv[0])) {
FIXME("Invalid arg %s\n", debugstr_jsval(argc ? argv[0] : jsval_undefined()));
hres = E_INVALIDARG;
goto done;
}
callback = get_object(argv[0]);
if(argc > 1) {
have_value = TRUE;
hres = jsval_copy(argv[1], &acc);
if(FAILED(hres))
goto done;
}
for(k = 0; k < length; k++) {
hres = jsdisp_get_idx(jsthis, k, &callback_args[1]);
if(hres == DISP_E_UNKNOWNNAME)
continue;
if(FAILED(hres))
break;
if(!have_value) {
have_value = TRUE;
acc = callback_args[1];
continue;
}
callback_args[0] = acc;
callback_args[2] = jsval_number(k);
callback_args[3] = jsval_obj(jsthis);
hres = disp_call_value(ctx, callback, context_this, DISPATCH_METHOD, ARRAY_SIZE(callback_args), callback_args, &new_acc);
jsval_release(callback_args[1]);
if(FAILED(hres))
break;
jsval_release(acc);
acc = new_acc;
}
if(SUCCEEDED(hres) && !have_value) {
WARN("No array element\n");
hres = JS_E_INVALID_ACTION;
}
if(SUCCEEDED(hres) && r)
*r = acc;
else if(have_value)
jsval_release(acc);
done:
jsdisp_release(jsthis);
return hres;
}
static HRESULT Array_some(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
IDispatch *context_obj = NULL, *callback;
jsval_t value, args[3], res;
BOOL boolval, ret = FALSE;
unsigned length, i;
jsdisp_t *jsthis;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
/* FIXME: check IsCallable */
if(!argc || !is_object_instance(argv[0])) {
FIXME("Invalid arg %s\n", debugstr_jsval(argc ? argv[0] : jsval_undefined()));
hres = E_INVALIDARG;
goto done;
}
callback = get_object(argv[0]);
if(argc > 1 && !is_undefined(argv[1])) {
if(!is_object_instance(argv[1])) {
FIXME("Unsupported context this %s\n", debugstr_jsval(argv[1]));
hres = E_NOTIMPL;
goto done;
}
context_obj = get_object(argv[1]);
}
for(i = 0; i < length; i++) {
hres = jsdisp_get_idx(jsthis, i, &value);
if(FAILED(hres)) {
if(hres == DISP_E_UNKNOWNNAME)
continue;
goto done;
}
args[0] = value;
args[1] = jsval_number(i);
args[2] = jsval_obj(jsthis);
hres = disp_call_value(ctx, callback, context_obj, DISPATCH_METHOD, ARRAY_SIZE(args), args, &res);
jsval_release(value);
if(FAILED(hres))
goto done;
hres = to_boolean(res, &boolval);
jsval_release(res);
if(FAILED(hres))
goto done;
if(boolval) {
ret = TRUE;
break;
}
}
if(r)
*r = jsval_bool(ret);
hres = S_OK;
done:
jsdisp_release(jsthis);
return hres;
}
/* ECMA-262 3rd Edition 15.4.4.13 */
static HRESULT Array_unshift(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *jsthis;
WCHAR buf[14], *buf_end, *str;
UINT32 i, length;
jsval_t val;
DISPID id;
HRESULT hres;
TRACE("\n");
hres = get_length(ctx, vthis, &jsthis, &length);
if(FAILED(hres))
return hres;
if(argc) {
buf_end = buf + ARRAY_SIZE(buf)-1;
*buf_end-- = 0;
i = length;
while(i--) {
str = idx_to_str(i, buf_end);
hres = jsdisp_get_id(jsthis, str, 0, &id);
if(SUCCEEDED(hres)) {
hres = jsdisp_propget(jsthis, id, &val);
if(FAILED(hres))
goto done;
hres = jsdisp_propput_idx(jsthis, i+argc, val);
jsval_release(val);
}else if(hres == DISP_E_UNKNOWNNAME) {
hres = IDispatchEx_DeleteMemberByDispID(&jsthis->IDispatchEx_iface, id);
}
}
if(FAILED(hres))
goto done;
}
for(i=0; i<argc; i++) {
hres = jsdisp_propput_idx(jsthis, i, argv[i]);
if(FAILED(hres))
goto done;
}
if(argc) {
length += argc;
hres = set_length(jsthis, length);
if(FAILED(hres))
goto done;
}
if(r)
*r = ctx->version < 2 ? jsval_undefined() : jsval_number(length);
hres = S_OK;
done:
jsdisp_release(jsthis);
return hres;
}
static void Array_destructor(jsdisp_t *dispex)
{
heap_free(dispex);
}
static void Array_on_put(jsdisp_t *dispex, const WCHAR *name)
{
ArrayInstance *array = array_from_jsdisp(dispex);
const WCHAR *ptr = name;
DWORD id = 0;
if(!is_digit(*ptr))
return;
while(*ptr && is_digit(*ptr)) {
id = id*10 + (*ptr-'0');
ptr++;
}
if(*ptr)
return;
if(id >= array->length)
array->length = id+1;
}
static const builtin_prop_t Array_props[] = {
{L"concat", Array_concat, PROPF_METHOD|1},
{L"every", Array_every, PROPF_METHOD|PROPF_ES5|1},
{L"filter", Array_filter, PROPF_METHOD|PROPF_ES5|1},
{L"forEach", Array_forEach, PROPF_METHOD|PROPF_ES5|1},
{L"indexOf", Array_indexOf, PROPF_METHOD|PROPF_ES5|1},
{L"join", Array_join, PROPF_METHOD|1},
{L"lastIndexOf", Array_lastIndexOf, PROPF_METHOD|PROPF_ES5|1},
{L"length", NULL,0, Array_get_length, Array_set_length},
{L"map", Array_map, PROPF_METHOD|PROPF_ES5|1},
{L"pop", Array_pop, PROPF_METHOD},
{L"push", Array_push, PROPF_METHOD|1},
{L"reduce", Array_reduce, PROPF_METHOD|PROPF_ES5|1},
{L"reverse", Array_reverse, PROPF_METHOD},
{L"shift", Array_shift, PROPF_METHOD},
{L"slice", Array_slice, PROPF_METHOD|2},
{L"some", Array_some, PROPF_METHOD|PROPF_ES5|1},
{L"sort", Array_sort, PROPF_METHOD|1},
{L"splice", Array_splice, PROPF_METHOD|2},
{L"toLocaleString", Array_toLocaleString, PROPF_METHOD},
{L"toString", Array_toString, PROPF_METHOD},
{L"unshift", Array_unshift, PROPF_METHOD|1},
};
static const builtin_info_t Array_info = {
JSCLASS_ARRAY,
NULL,
ARRAY_SIZE(Array_props),
Array_props,
Array_destructor,
Array_on_put
};
static const builtin_prop_t ArrayInst_props[] = {
{L"length", NULL,0, Array_get_length, Array_set_length}
};
static const builtin_info_t ArrayInst_info = {
JSCLASS_ARRAY,
NULL,
ARRAY_SIZE(ArrayInst_props),
ArrayInst_props,
Array_destructor,
Array_on_put
};
/* ECMA-262 5.1 Edition 15.4.3.2 */
static HRESULT ArrayConstr_isArray(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv, jsval_t *r)
{
jsdisp_t *obj;
TRACE("\n");
if(!argc || !is_object_instance(argv[0])) {
if(r) *r = jsval_bool(FALSE);
return S_OK;
}
obj = iface_to_jsdisp(get_object(argv[0]));
if(r) *r = jsval_bool(obj && is_class(obj, JSCLASS_ARRAY));
if(obj) jsdisp_release(obj);
return S_OK;
}
static HRESULT ArrayConstr_value(script_ctx_t *ctx, jsval_t vthis, WORD flags, unsigned argc, jsval_t *argv,
jsval_t *r)
{
jsdisp_t *obj;
DWORD i;
HRESULT hres;
TRACE("\n");
switch(flags) {
case DISPATCH_METHOD:
case DISPATCH_CONSTRUCT: {
if(argc == 1 && is_number(argv[0])) {
double n = get_number(argv[0]);
if(n < 0 || !is_int32(n))
return JS_E_INVALID_LENGTH;
if(!r)
return S_OK;
hres = create_array(ctx, n, &obj);
if(FAILED(hres))
return hres;
*r = jsval_obj(obj);
return S_OK;
}
if(!r)
return S_OK;
hres = create_array(ctx, argc, &obj);
if(FAILED(hres))
return hres;
for(i=0; i < argc; i++) {
hres = jsdisp_propput_idx(obj, i, argv[i]);
if(FAILED(hres))
break;
}
if(FAILED(hres)) {
jsdisp_release(obj);
return hres;
}
*r = jsval_obj(obj);
break;
}
default:
FIXME("unimplemented flags: %x\n", flags);
return E_NOTIMPL;
}
return S_OK;
}
static HRESULT alloc_array(script_ctx_t *ctx, jsdisp_t *object_prototype, ArrayInstance **ret)
{
ArrayInstance *array;
HRESULT hres;
array = heap_alloc_zero(sizeof(ArrayInstance));
if(!array)
return E_OUTOFMEMORY;
if(object_prototype)
hres = init_dispex(&array->dispex, ctx, &Array_info, object_prototype);
else
hres = init_dispex_from_constr(&array->dispex, ctx, &ArrayInst_info, ctx->array_constr);
if(FAILED(hres)) {
heap_free(array);
return hres;
}
*ret = array;
return S_OK;
}
static const builtin_prop_t ArrayConstr_props[] = {
{L"isArray", ArrayConstr_isArray, PROPF_ES5|PROPF_METHOD|1}
};
static const builtin_info_t ArrayConstr_info = {
JSCLASS_FUNCTION,
Function_value,
ARRAY_SIZE(ArrayConstr_props),
ArrayConstr_props,
NULL,
NULL
};
HRESULT create_array_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
{
ArrayInstance *array;
HRESULT hres;
hres = alloc_array(ctx, object_prototype, &array);
if(FAILED(hres))
return hres;
hres = create_builtin_constructor(ctx, ArrayConstr_value, L"Array", &ArrayConstr_info, PROPF_CONSTR|1, &array->dispex, ret);
jsdisp_release(&array->dispex);
return hres;
}
HRESULT create_array(script_ctx_t *ctx, DWORD length, jsdisp_t **ret)
{
ArrayInstance *array;
HRESULT hres;
hres = alloc_array(ctx, NULL, &array);
if(FAILED(hres))
return hres;
array->length = length;
*ret = &array->dispex;
return S_OK;
}
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