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script: Move operations in window_named_properties::get_own_property_descriptor & webdriver_handlers::clone_an_object into unsafe blocks (#38951)

Browse source 
Testing: Covered by existing tests
Part of https://github.com/servo/servo/issues/35955

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
This commit is contained in:
Simon Wülker 2025-08-26 23:48:25 +02:00 • committed by GitHub
parent 87fe202ded
commit de6feb469a
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GPG key ID: B5690EEEBB952194
3 changed files with 87 additions and 57 deletions
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55
components/script/webdriver_handlers.rs
View file

@ -467,20 +467,22 @@ unsafe fn clone_an_object(
// Step 2. Append value to `seen`.
seen.insert(hashable.clone());
let return_val = if is_array_like::<crate::DomTypeHolder>(cx, val) ||
is_arguments_object(cx, val)
{
let return_val = if unsafe {
is_array_like::<crate::DomTypeHolder>(cx, val) || is_arguments_object(cx, val)
} {
let mut result: Vec<JSValue> = Vec::new();
let length =
match get_property::<u32>(cx, object_handle, "length", ConversionBehavior::Default) {
let get_property_result = unsafe {
get_property::<u32>(cx, object_handle, "length", ConversionBehavior::Default)
};
let length = match get_property_result {
Ok(length) => match length {
Some(length) => length,
_ => return Err(WebDriverJSError::UnknownType),
},
Err(error) => {
throw_dom_exception(
SafeJSContext::from_ptr(cx),
unsafe { SafeJSContext::from_ptr(cx) },
global_scope,
error,
CanGc::note(),
@ -491,14 +493,20 @@ unsafe fn clone_an_object(
// Step 4. For each enumerable property in value, run the following substeps:
for i in 0..length {
rooted!(in(cx) let mut item = UndefinedValue());
match get_property_jsval(cx, object_handle, &i.to_string(), item.handle_mut()) {
Ok(_) => match jsval_to_webdriver_inner(cx, global_scope, item.handle(), seen) {
let get_property_result =
unsafe { get_property_jsval(cx, object_handle, &i.to_string(), item.handle_mut()) };
match get_property_result {
Ok(_) => {
let conversion_result =
unsafe { jsval_to_webdriver_inner(cx, global_scope, item.handle(), seen) };
match conversion_result {
Ok(converted_item) => result.push(converted_item),
err @ Err(_) => return err,
}
},
Err(error) => {
throw_dom_exception(
SafeJSContext::from_ptr(cx),
unsafe { SafeJSContext::from_ptr(cx) },
global_scope,
error,
CanGc::note(),
@ -511,13 +519,16 @@ unsafe fn clone_an_object(
} else {
let mut result = HashMap::new();
let mut ids = IdVector::new(cx);
if !GetPropertyKeys(
let mut ids = unsafe { IdVector::new(cx) };
let succeeded = unsafe {
GetPropertyKeys(
cx,
object_handle.into(),
jsapi::JSITER_OWNONLY,
ids.handle_mut(),
) {
)
};
if !succeeded {
return Err(WebDriverJSError::JSError);
}
for id in ids.iter() {
@ -525,32 +536,40 @@ unsafe fn clone_an_object(
rooted!(in(cx) let mut desc = PropertyDescriptor::default());
let mut is_none = false;
if !JS_GetOwnPropertyDescriptorById(
let succeeded = unsafe {
JS_GetOwnPropertyDescriptorById(
cx,
object_handle.into(),
id.handle().into(),
desc.handle_mut().into(),
&mut is_none,
) {
)
};
if !succeeded {
return Err(WebDriverJSError::JSError);
}
rooted!(in(cx) let mut property = UndefinedValue());
if !JS_GetPropertyById(
let succeeded = unsafe {
JS_GetPropertyById(
cx,
object_handle.into(),
id.handle().into(),
property.handle_mut().into(),
) {
)
};
if !succeeded {
return Err(WebDriverJSError::JSError);
}
if !property.is_undefined() {
let Some(name) = jsid_to_string(cx, id.handle()) else {
let name = unsafe { jsid_to_string(cx, id.handle()) };
let Some(name) = name else {
return Err(WebDriverJSError::JSError);
};
if let Ok(value) =
jsval_to_webdriver_inner(cx, global_scope, property.handle(), seen)
unsafe { jsval_to_webdriver_inner(cx, global_scope, property.handle(), seen) }
{
result.insert(name.into(), value);
} else {

17
components/script/window_named_properties.rs
View file

@ -89,11 +89,13 @@ unsafe extern "C" fn get_own_property_descriptor(
let cx = unsafe { SafeJSContext::from_ptr(cx) };
if id.is_symbol() {
if id.get().asBits_ == SymbolId(GetWellKnownSymbol(*cx, SymbolCode::toStringTag)).asBits_ {
if id.get().asBits_ ==
SymbolId(unsafe { GetWellKnownSymbol(*cx, SymbolCode::toStringTag) }).asBits_
{
rooted!(in(*cx) let mut rval = UndefinedValue());
"WindowProperties".to_jsval(*cx, rval.handle_mut());
unsafe { "WindowProperties".to_jsval(*cx, rval.handle_mut()) };
set_property_descriptor(
RustMutableHandle::from_raw(desc),
unsafe { RustMutableHandle::from_raw(desc) },
rval.handle(),
JSPROP_READONLY.into(),
unsafe { &mut *is_none },
@ -103,12 +105,15 @@ unsafe extern "C" fn get_own_property_descriptor(
}
let mut found = false;
if !has_property_on_prototype(
let lookup_succeeded = unsafe {
has_property_on_prototype(
*cx,
RustHandle::from_raw(proxy),
RustHandle::from_raw(id),
&mut found,
) {
)
};
if !lookup_succeeded {
return false;
}
if found {
@ -136,7 +141,9 @@ unsafe extern "C" fn get_own_property_descriptor(
.expect("global is not a window");
if let Some(obj) = window.NamedGetter(s.into()) {
rooted!(in(*cx) let mut rval = UndefinedValue());
unsafe {
obj.to_jsval(*cx, rval.handle_mut());
}
set_property_descriptor(
unsafe { RustMutableHandle::from_raw(desc) },
rval.handle(),

6
components/script_bindings/utils.rs
View file

@ -312,7 +312,11 @@ pub unsafe fn set_dictionary_property(
Ok(())
}
/// Returns whether `proxy` has a property `id` on its prototype.
/// Computes whether `proxy` has a property `id` on its prototype and stores
/// the result in `found`.
///
/// Returns a boolean indicating whether the check succeeded.
/// If `false` is returned then the value of `found` is unspecified.
///
/// # Safety
/// `cx` must point to a valid, non-null JSContext.