Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-07-22 23:03:42 +01:00
Code Issues Projects Releases Packages Wiki Activity

Properly root expando objects.

Browse source
This commit is contained in:
Ms2ger 2017-02-07 11:24:12 +01:00
parent bf814aa5ba
commit bd431039b9
2 changed files with 27 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

24
components/script/dom/bindings/proxyhandler.rs
View file

@ -33,7 +33,8 @@ pub unsafe extern "C" fn shadow_check_callback(cx: *mut JSContext,
-> DOMProxyShadowsResult {
// TODO: support OverrideBuiltins when #12978 is fixed.
rooted!(in(cx) let expando = get_expando_object(object));
rooted!(in(cx) let mut expando = ptr::null_mut());
get_expando_object(object, expando.handle_mut());
if !expando.get().is_null() {
let mut has_own = false;
if !JS_AlreadyHasOwnPropertyById(cx, expando.handle(), id, &mut has_own) {
@ -99,7 +100,8 @@ pub unsafe extern "C" fn define_property(cx: *mut JSContext,
return true;
}
rooted!(in(cx) let expando = ensure_expando_object(cx, proxy));
rooted!(in(cx) let mut expando = ptr::null_mut());
ensure_expando_object(cx, proxy, expando.handle_mut());
JS_DefinePropertyById(cx, expando.handle(), id, desc, result)
}
@ -109,7 +111,8 @@ pub unsafe extern "C" fn delete(cx: *mut JSContext,
id: HandleId,
bp: *mut ObjectOpResult)
-> bool {
rooted!(in(cx) let expando = get_expando_object(proxy));
rooted!(in(cx) let mut expando = ptr::null_mut());
get_expando_object(proxy, expando.handle_mut());
if expando.is_null() {
(*bp).code_ = 0 /* OkCode */;
return true;
@ -156,31 +159,30 @@ pub unsafe extern "C" fn get_prototype_if_ordinary(_: *mut JSContext,
}
/// Get the expando object, or null if there is none.
pub fn get_expando_object(obj: HandleObject) -> *mut JSObject {
pub fn get_expando_object(obj: HandleObject, expando: MutableHandleObject) {
unsafe {
assert!(is_dom_proxy(obj.get()));
let val = GetProxyExtra(obj.get(), JSPROXYSLOT_EXPANDO);
if val.is_undefined() {
expando.set(if val.is_undefined() {
ptr::null_mut()
} else {
val.to_object()
}
});
}
}
/// Get the expando object, or create it if it doesn't exist yet.
/// Fails on JSAPI failure.
pub fn ensure_expando_object(cx: *mut JSContext, obj: HandleObject) -> *mut JSObject {
pub fn ensure_expando_object(cx: *mut JSContext, obj: HandleObject, expando: MutableHandleObject) {
unsafe {
assert!(is_dom_proxy(obj.get()));
let mut expando = get_expando_object(obj);
get_expando_object(obj, expando);
if expando.is_null() {
expando = JS_NewObjectWithGivenProto(cx, ptr::null_mut(), HandleObject::null());
expando.set(JS_NewObjectWithGivenProto(cx, ptr::null_mut(), HandleObject::null()));
assert!(!expando.is_null());
SetProxyExtra(obj.get(), JSPROXYSLOT_EXPANDO, &ObjectValue(expando));
SetProxyExtra(obj.get(), JSPROXYSLOT_EXPANDO, &ObjectValue(expando.get()));
}
expando
}
}