Enum wasmer::ExternRef

pub enum ExternRef {
    Null,
    Ref(InternalRef),
    Other(OtherRef),
}

Represents an opaque reference to any data within WebAssembly.

Variants

Null

A reference to no data.

Ref(InternalRef)

A reference to data stored internally.

Other(OtherRef)

A reference to data located outside.

Implementations

impl ExternRef

pub fn new(data: Box<dyn Any + 'static, Global>) -> ExternRef

Creates a new instance of ExternRef from Box<dyn Any>.

pub fn null() -> ExternRef

Creates a Null reference.

pub fn data(&self) -> Ref<'_, Box<dyn Any + 'static, Global>>

Returns the data stored in the reference if available.

Panics

Panics if the variant isn't ExternRef::Other.

pub fn ptr_eq(&self, other: &ExternRef) -> bool

Returns true if the two ExternRef<T>'s point to the same value (not just values that compare as equal).

pub fn host_info(
    &self
) -> Option<RefMut<'_, Box<dyn HostInfo + 'static, Global>>>

Returns a mutable reference to the host information if available.

Panics

Panics if ExternRef is already borrowed or ExternRef is Null.

pub fn set_host_info(&self, info: Option<Box<dyn HostInfo + 'static, Global>>)

Sets the host information for an ExternRef.

Panics

Panics if ExternRef is already borrowed or ExternRef is Null.

Trait Implementations

impl Clone for ExternRef

pub fn clone(&self) -> ExternRef

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ExternRef

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

Formats the value using the given formatter.

impl Eq for ExternRef

impl Hash for ExternRef

pub fn hash<H>(&self, _state: &mut H) where
    H: Hasher, 

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl PartialEq<ExternRef> for ExternRef

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.