pub struct wasm_ref_t { /* private fields */ }
Expand description
*mut wasm_ref_t
is a reference type (externref
or funcref
) for the C API.
Because we do not have a uniform representation for funcref
s and externref
s,
a *mut wasm_ref_t
is morally a Option<Box<Either<ExternRef, Func>>>
.
A null *mut wasm_ref_t
is either a null funcref
or a null externref
depending on context (e.g. the table’s element type that it is going into or
coming out of).
Note: this is not #[repr(C)]
because it is an opaque type in the header,
and only ever referenced as *mut wasm_ref_t
. This also lets us use a
regular, non-repr(C)
enum
to define WasmRef
.
Trait Implementations§
Source§impl Clone for wasm_ref_t
impl Clone for wasm_ref_t
Source§fn clone(&self) -> wasm_ref_t
fn clone(&self) -> wasm_ref_t
Returns a copy of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreAuto Trait Implementations§
impl Freeze for wasm_ref_t
impl RefUnwindSafe for wasm_ref_t
impl Send for wasm_ref_t
impl Sync for wasm_ref_t
impl Unpin for wasm_ref_t
impl UnwindSafe for wasm_ref_t
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
Source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Converts
Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
, which can then be
downcast
into Box<dyn ConcreteType>
where ConcreteType
implements Trait
.Source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Converts
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
, which can then be further
downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.Source§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Converts
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s.Source§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Converts
&mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s.