Struct wasmi::FuncRef

impl FuncRef

pub fn is_null(&self) -> bool

Returns true if FuncRef is null.

pub fn new(nullable_func: impl Into<Option<Func>>) -> Self

Creates a new FuncRef.

§Examples

assert!(FuncRef::new(None).is_null());
assert!(FuncRef::new(Func::wrap(&mut store, |x: i32| x)).func().is_some());

pub fn func(&self) -> Option<&Func>

Returns the inner Func if FuncRef is not null.

Otherwise returns None.

pub fn null() -> Self

Creates a null FuncRef.

Trait Implementations§

impl Clone for FuncRef

fn clone(&self) -> FuncRef

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

impl Debug for FuncRef

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

Formats the value using the given formatter. Read more

impl Default for FuncRef

fn default() -> FuncRef

Returns the “default value” for a type. Read more

impl From<Func> for FuncRef

fn from(func: Func) -> Self

Converts to this type from the input type.

impl From<FuncRef> for UntypedValue

fn from(funcref: FuncRef) -> Self

Converts to this type from the input type.

impl From<FuncRef> for Value

fn from(funcref: FuncRef) -> Self

Converts to this type from the input type.

impl From<UntypedValue> for FuncRef

fn from(untyped: UntypedValue) -> Self

Converts to this type from the input type.

impl Copy for FuncRef

impl WasmType for FuncRef

Auto Trait Implementations§

impl UnwindSafe for FuncRef

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T1> DecodeUntypedSlice for T1
where T1: From<UntypedValue>,

fn decode_untyped_slice(results: &[UntypedValue]) -> Result<T1, UntypedError>

Decodes the slice of UntypedValue as a value of type Self. Read more

impl<T> Downcast for T
where T: Any,

fn into_any(self: Box<T>) -> Box<dyn Any>

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.

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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.

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.

impl<T> DowncastSync for T
where T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.