Expand description
An external value is the runtime representation of an entity that can be imported or exported.
Variants
Func(FuncRef)
Table(TableRef)
Memory(MemoryRef)
Global(GlobalRef)
Should be immutable.
Implementations
sourceimpl ExternVal
impl ExternVal
sourcepub fn as_func(&self) -> Option<&FuncRef>
pub fn as_func(&self) -> Option<&FuncRef>
Get underlying function reference if this ExternVal
contains
a function, or None
if it is some other kind.
sourcepub fn as_table(&self) -> Option<&TableRef>
pub fn as_table(&self) -> Option<&TableRef>
Get underlying table reference if this ExternVal
contains
a table, or None
if it is some other kind.
Trait Implementations
Auto Trait Implementations
impl !RefUnwindSafe for ExternVal
impl !Send for ExternVal
impl !Sync for ExternVal
impl Unpin for ExternVal
impl !UnwindSafe for ExternVal
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more