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jscript: Add Object.isFrozen and Object.isSealed implementation. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2021-04-02 20:24:37 +02:00 committed by Alexandre Julliard
parent f5b6c7cc7e
commit 1f49903e66
4 changed files with 135 additions and 0 deletions
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20
dlls/jscript/dispex.c
View File

@ -2646,6 +2646,26 @@ void jsdisp_freeze(jsdisp_t *obj, BOOL seal)
obj->extensible = FALSE;
}
BOOL jsdisp_is_frozen(jsdisp_t *obj, BOOL sealed)
{
unsigned int i;
if(obj->extensible)
return FALSE;
for(i = 0; i < obj->prop_cnt; i++) {
if(obj->props[i].type == PROP_JSVAL) {
if(!sealed && (obj->props[i].flags & PROPF_WRITABLE))
return FALSE;
}else if(obj->props[i].type != PROP_ACCESSOR)
continue;
if(obj->props[i].flags & PROPF_CONFIGURABLE)
return FALSE;
}
return TRUE;
}
HRESULT jsdisp_get_prop_name(jsdisp_t *obj, DISPID id, jsstr_t **r)
{
dispex_prop_t *prop = get_prop(obj, id);

1
dlls/jscript/jscript.h
View File

@ -318,6 +318,7 @@ HRESULT jsdisp_define_data_property(jsdisp_t*,const WCHAR*,unsigned,jsval_t) DEC
HRESULT jsdisp_next_prop(jsdisp_t*,DISPID,BOOL,DISPID*) DECLSPEC_HIDDEN;
HRESULT jsdisp_get_prop_name(jsdisp_t*,DISPID,jsstr_t**);
void jsdisp_freeze(jsdisp_t*,BOOL) DECLSPEC_HIDDEN;
BOOL jsdisp_is_frozen(jsdisp_t*,BOOL) DECLSPEC_HIDDEN;
HRESULT create_builtin_function(script_ctx_t*,builtin_invoke_t,const WCHAR*,const builtin_info_t*,DWORD,
jsdisp_t*,jsdisp_t**) DECLSPEC_HIDDEN;

46
dlls/jscript/object.c
View File

@ -760,6 +760,50 @@ static HRESULT Object_isExtensible(script_ctx_t *ctx, vdisp_t *jsthis, WORD flag
return S_OK;
}
static HRESULT Object_isFrozen(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc,
jsval_t *argv, jsval_t *r)
{
jsdisp_t *obj;
if(!argc || !is_object_instance(argv[0]) || !get_object(argv[0])) {
WARN("argument is not an object\n");
return JS_E_OBJECT_EXPECTED;
}
TRACE("(%s)\n", debugstr_jsval(argv[0]));
obj = to_jsdisp(get_object(argv[0]));
if(!obj) {
FIXME("Non-JS object\n");
return E_NOTIMPL;
}
if(r) *r = jsval_bool(jsdisp_is_frozen(obj, FALSE));
return S_OK;
}
static HRESULT Object_isSealed(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc,
jsval_t *argv, jsval_t *r)
{
jsdisp_t *obj;
if(!argc || !is_object_instance(argv[0]) || !get_object(argv[0])) {
WARN("argument is not an object\n");
return JS_E_OBJECT_EXPECTED;
}
TRACE("(%s)\n", debugstr_jsval(argv[0]));
obj = to_jsdisp(get_object(argv[0]));
if(!obj) {
FIXME("Non-JS object\n");
return E_NOTIMPL;
}
if(r) *r = jsval_bool(jsdisp_is_frozen(obj, TRUE));
return S_OK;
}
static const builtin_prop_t ObjectConstr_props[] = {
{L"create", Object_create, PROPF_ES5|PROPF_METHOD|2},
{L"defineProperties", Object_defineProperties, PROPF_ES5|PROPF_METHOD|2},
@ -768,6 +812,8 @@ static const builtin_prop_t ObjectConstr_props[] = {
{L"getOwnPropertyDescriptor", Object_getOwnPropertyDescriptor, PROPF_ES5|PROPF_METHOD|2},
{L"getPrototypeOf", Object_getPrototypeOf, PROPF_ES5|PROPF_METHOD|1},
{L"isExtensible", Object_isExtensible, PROPF_ES5|PROPF_METHOD|1},
{L"isFrozen", Object_isFrozen, PROPF_ES5|PROPF_METHOD|1},
{L"isSealed", Object_isSealed, PROPF_ES5|PROPF_METHOD|1},
{L"keys", Object_keys, PROPF_ES5|PROPF_METHOD|1},
{L"preventExtensions", Object_preventExtensions, PROPF_ES5|PROPF_METHOD|1},
{L"seal", Object_seal, PROPF_ES5|PROPF_METHOD|1},

68
dlls/mshtml/tests/es5.js
View File

@ -1104,6 +1104,74 @@ sync_test("seal", function() {
ok(o.length === 1, "o.length = " + o.length);
});
sync_test("isFrozen", function() {
ok(Object.isFrozen.length === 1, "Object.isFrozen.length = " + Object.isFrozen.length);
ok(Object.isSealed.length === 1, "Object.isSealed.length = " + Object.isSealed.length);
var o = Object.freeze({});
ok(Object.isFrozen(o) === true, "o is not frozen");
ok(Object.isSealed(o) === true, "o is not sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
ok(Object.isFrozen({}) === false, "{} is frozen");
ok(Object.isSealed({}) === false, "{} is sealed");
o = Object.preventExtensions({});
ok(Object.isFrozen(o) === true, "o is not frozen");
ok(Object.isSealed(o) === true, "o is not sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = Object.preventExtensions({ prop: 1 });
ok(Object.isFrozen(o) === false, "o is frozen");
ok(Object.isSealed(o) === false, "o is sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = Object.freeze({ prop: 1 });
ok(Object.isFrozen(o) === true, "o is not frozen");
ok(Object.isSealed(o) === true, "o is not sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = Object.seal({ prop: 1 });
ok(Object.isFrozen(o) === false, "o is frozen");
ok(Object.isSealed(o) === true, "o is not sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = {};
Object.defineProperty(o, "prop", { value: 1 });
Object.preventExtensions(o);
ok(Object.isFrozen(o) === true, "o is not frozen");
ok(Object.isSealed(o) === true, "o is not sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = {};
Object.defineProperty(o, "prop", { value: 1, writable: true });
Object.preventExtensions(o);
ok(Object.isFrozen(o) === false, "o is frozen");
ok(Object.isSealed(o) === true, "o is not sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = {};
Object.defineProperty(o, "prop", { value: 1, writable: true, configurable: true });
Object.preventExtensions(o);
ok(Object.isFrozen(o) === false, "o is frozen");
ok(Object.isSealed(o) === false, "o is sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = {};
Object.defineProperty(o, "prop", { value: 1, configurable: true });
Object.preventExtensions(o);
ok(Object.isFrozen(o) === false, "o is frozen");
ok(Object.isSealed(o) === false, "o is sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
o = {};
Object.defineProperty(o, "prop", { get: function() {}, set: function() {} });
Object.preventExtensions(o);
ok(Object.isFrozen(o) === true, "o is not frozen");
ok(Object.isSealed(o) === true, "o is not sealed");
ok(Object.isExtensible(o) === false, "o is extensible");
});
sync_test("head_setter", function() {
document.head = "";
ok(typeof(document.head) === "object", "typeof(document.head) = " + typeof(document.head));