Struct script::dom::promise::Promise

source ·
#[repr(C)]
pub struct Promise { reflector: Reflector, permanent_js_root: Heap<JSVal>, }

Fields§

§reflector: Reflector§permanent_js_root: Heap<JSVal>

Since Promise values are natively reference counted without the knowledge of the SpiderMonkey GC, an explicit root for the reflector is stored while any native instance exists. This ensures that the reflector will never be GCed while native code could still interact with its native representation.

Implementations§

source§

impl Promise

source

pub fn new(global: &GlobalScope) -> Rc<Promise>

source

pub fn new_in_current_realm(_comp: InRealm<'_>) -> Rc<Promise>

source

pub fn duplicate(&self) -> Rc<Promise>

source

pub fn new_with_js_promise( obj: HandleObject<'_>, cx: SafeJSContext ) -> Rc<Promise>

source

fn create_js_promise(cx: SafeJSContext, obj: MutableHandleObject<'_>)

source

pub fn new_resolved( global: &GlobalScope, cx: SafeJSContext, value: HandleValue<'_> ) -> Result<Rc<Promise>, Error>

source

pub fn new_rejected( global: &GlobalScope, cx: SafeJSContext, value: HandleValue<'_> ) -> Result<Rc<Promise>, Error>

source

pub fn resolve_native<T>(&self, val: &T)where T: ToJSValConvertible,

source

pub fn resolve(&self, cx: SafeJSContext, value: HandleValue<'_>)

source

pub fn reject_native<T>(&self, val: &T)where T: ToJSValConvertible,

source

pub fn reject_error(&self, error: Error)

source

pub fn reject(&self, cx: SafeJSContext, value: HandleValue<'_>)

source

pub fn is_fulfilled(&self) -> bool

source

pub fn promise_obj(&self) -> HandleObject<'_>

source

pub fn append_native_handler( &self, handler: &PromiseNativeHandler, _comp: InRealm<'_> )

Trait Implementations§

source§

impl DomObject for Promise

source§

fn reflector(&self) -> &Reflector

Returns the receiver’s reflector.
source§

fn global(&self) -> Root<Dom<GlobalScope>>where Self: Sized,

Returns the global scope of the realm that the DomObject was created in.
source§

impl Drop for Promise

source§

fn drop(&mut self)

Executes the destructor for this type. Read more
source§

impl HasParent for Promise

source§

fn as_parent(&self) -> &Reflector

This is used in a type assertion to ensure that the source and webidls agree as to what the parent type is

§

type Parent = Reflector

source§

impl MallocSizeOf for Promise

source§

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.
source§

impl MutDomObject for Promise

source§

unsafe fn init_reflector(&self, obj: *mut JSObject)

Initializes the Reflector
source§

impl ToJSValConvertible for Promise

source§

unsafe fn to_jsval(&self, cx: *mut JSContext, rval: MutableHandleValue<'_>)

Convert self to a JSVal. JSAPI failure causes a panic.
source§

impl Traceable for Promise

source§

unsafe fn trace(&self, tracer: *mut JSTracer)

Trace self.

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T> Instrument for T

source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

impl<T, U> Into<U> for Twhere U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> MaybeBoxed<Box<T, Global>> for T

source§

fn maybe_boxed(self) -> Box<T, Global>

Convert
source§

impl<T> MaybeBoxed<T> for T

source§

fn maybe_boxed(self) -> T

Convert
source§

impl<T> Pointable for T

source§

const ALIGN: usize = _

The alignment of pointer.
§

type Init = T

The type for initializers.
source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
source§

impl<T> Same<T> for T

§

type Output = T

Should always be Self
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

source§

fn vzip(self) -> V

source§

impl<T> WithSubscriber for T

source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

impl<T> Erased for T