Struct VMExternRef

pub struct VMExternRef(/* private fields */);

This type does not do reference counting automatically, reference counting can be done with Self::ref_clone and Self::ref_drop.

Implementations

impl VMExternRef

pub fn is_null(&self) -> bool

Checks if the given ExternRef is null.

pub const fn null() -> Self

New null extern ref

pub fn new<T>(value: T) -> Self

where T: Any + Send + Sync + 'static + Sized,

Make a new extern reference

pub fn downcast<T>(&self) -> Option<&T>

where T: Any + Send + Sync + 'static + Sized,

Try to downcast to the given value

pub fn ref_inc_by(&self, val: usize)

A low-level function to increment the strong-count a given number of times.

This is used as an optimization when implementing some low-level VM primitives. If you’re using this type directly for whatever reason, you probably want Self::ref_clone instead.

pub fn ref_clone(&self) -> Self

A deep copy of the reference, increments the strong count.

pub fn ref_drop(&mut self)

Does an inner drop, decrementing the strong count

Trait Implementations

impl Clone for VMExternRef

fn clone(&self) -> VMExternRef

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VMExternRef

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

Formats the value using the given formatter.

impl From<ExternRef> for VMExternRef

fn from(other: ExternRef) -> Self

Converts to this type from the input type.

impl From<VMExternRef> for ExternRef

fn from(other: VMExternRef) -> Self

Converts to this type from the input type.

impl NativeWasmType for VMExternRef

const WASM_TYPE: Type = Type::ExternRef

Type for this NativeWasmType.

type Abi = VMExternRef

The ABI for this type (i32, i64, f32, f64)

fn to_binary(self) -> i128

Convert self to i128 binary representation.

fn from_binary(bits: i128) -> Self

Convert to self from i128 binary representation.

fn to_value<T: WasmValueType>(self) -> Value<T>

Convert self to a Value.

impl PartialEq for VMExternRef

fn eq(&self, other: &VMExternRef) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for VMExternRef

impl Eq for VMExternRef

impl StructuralPartialEq for VMExternRef