Struct script::dom::bindings::import::module::jsapi::JS::Handle

source ·
#[repr(C)]
pub struct Handle<T> { pub _phantom_0: PhantomData<UnsafeCell<T>>, pub ptr: *const T, }
Expand description

Reference to a T that has been rooted elsewhere. This is most useful as a parameter type, which guarantees that the T lvalue is properly rooted. See “Move GC Stack Rooting” above.

If you want to add additional methods to Handle for a specific specialization, define a HandleOperations specialization containing them.

Fields§

§_phantom_0: PhantomData<UnsafeCell<T>>§ptr: *const T

Implementations§

source§

impl<T> Handle<T>

source

pub fn get(&self) -> T
where T: Copy,

source

pub unsafe fn from_marked_location(ptr: *const T) -> Handle<T>

source§

impl Handle<Value>

source§

impl Handle<*mut JSObject>

Trait Implementations§

source§

impl<T> Clone for Handle<T>
where T: Clone,

source§

fn clone(&self) -> Handle<T>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl<T> Debug for Handle<T>
where T: Debug,

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
source§

impl<T> Deref for Handle<T>

source§

type Target = T

The resulting type after dereferencing.
source§

fn deref<'a>(&'a self) -> &'a T

Dereferences the value.
source§

impl From<Handle<Value>> for HandleValueArray

source§

fn from(handle: Handle<Value>) -> HandleValueArray

Converts to this type from the input type.
source§

impl<T> From<T> for Handle<<T as IntoHandle>::Target>
where T: IntoHandle,

source§

fn from(value: T) -> Handle<<T as IntoHandle>::Target>

Converts to this type from the input type.
source§

impl<T> PartialEq for Handle<T>
where T: PartialEq,

source§

fn eq(&self, other: &Handle<T>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl<T> Copy for Handle<T>
where T: Copy,

source§

impl<T> StructuralPartialEq for Handle<T>

Auto Trait Implementations§

§

impl<T> Freeze for Handle<T>

§

impl<T> !RefUnwindSafe for Handle<T>

§

impl<T> !Send for Handle<T>

§

impl<T> !Sync for Handle<T>

§

impl<T> Unpin for Handle<T>
where T: Unpin,

§

impl<T> UnwindSafe for Handle<T>

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<T> Downcast<T> for T

source§

fn downcast(&self) -> &T

source§

impl<T> Filterable for T

source§

fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. 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 T
where 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> IntoEither for T

source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
source§

impl<T> MaybeBoxed<Box<T>> for T

source§

fn maybe_boxed(self) -> Box<T>

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.
source§

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 for T

source§

type Output = T

Should always be Self
source§

impl<T> ToOwned for T
where T: Clone,

source§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

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

source§

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 T
where U: TryFrom<T>,

source§

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<T> Upcast<T> for T

source§

fn upcast(&self) -> Option<&T>

source§

impl<V, T> VZip<V> for T
where 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> ErasedDestructor for T
where T: 'static,

source§

impl<T> Formattable for T
where T: Deref, <T as Deref>::Target: Formattable,

source§

impl<T> MaybeSendSync for T

source§

impl<T> Parsable for T
where T: Deref, <T as Deref>::Target: Parsable,