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Use unsafe Heap::handle wherever needed

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This commit is contained in:
Igor Matuszewski 2018-03-23 14:29:10 +01:00
parent ed0091f86f
commit f7c039516c
3 changed files with 12 additions and 3 deletions
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3
components/script/dom/bindings/reflector.rs
View file

@ -46,7 +46,8 @@ impl Reflector {
/// Get the reflector.
#[inline]
pub fn get_jsobject(&self) -> HandleObject {
self.object.handle()
// We're rooted, so it's safe to hand out a handle to object in Heap
unsafe { self.object.handle() }
}
/// Initialize the reflector. (May be called only once.)

3
components/script/dom/customelementregistry.rs
View file

@ -604,7 +604,8 @@ impl CustomElementReaction {
match *self {
CustomElementReaction::Upgrade(ref definition) => upgrade_element(definition.clone(), element),
CustomElementReaction::Callback(ref callback, ref arguments) => {
let arguments = arguments.iter().map(|arg| arg.handle()).collect();
// We're rooted, so it's safe to hand out a handle to objects in Heap
let arguments = arguments.iter().map(|arg| unsafe { arg.handle() }).collect();
let _ = callback.Call_(&*element, arguments, ExceptionHandling::Report);
}
}

9
components/script/timers.rs
View file

@ -500,7 +500,7 @@ impl JsTimerTask {
code_str, rval.handle_mut());
},
InternalTimerCallback::FunctionTimerCallback(ref function, ref arguments) => {
let arguments = arguments.iter().map(|arg| arg.handle()).collect();
let arguments = self.collect_heap_args(arguments);
let _ = function.Call_(this, arguments, Report);
},
};
@ -516,4 +516,11 @@ impl JsTimerTask {
timers.initialize_and_schedule(&this.global(), self);
}
}
// Returning Handles directly from Heap values is inherently unsafe, but here it's
// always done via rooted JsTimers, which is safe.
#[allow(unsafe_code)]
fn collect_heap_args(&self, args: &[Heap<JSVal>]) -> Vec<HandleValue> {
args.iter().map(|arg| unsafe { arg.handle() }).collect()
}
}