Enum wasm_runtime_layer::Extern

pub enum Extern {
    Global(Global),
    Table(Table),
    Memory(Memory),
    Func(Func),
}

An external item to a WebAssembly module.

This is returned from Instance::exports or Instance::get_export.

Variants

Global(Global)

A WebAssembly global which acts like a Cell<T> of sorts, supporting get and set operations.

Table(Table)

A WebAssembly table which is an array of funtion references.

Memory(Memory)

A WebAssembly linear memory.

Func(Func)

A WebAssembly function which can be called.

Implementations

impl Extern

pub fn into_global(self) -> Option<Global>

Returns the underlying global variable if self is a global variable.

Returns None otherwise.

pub fn into_table(self) -> Option<Table>

Returns the underlying table if self is a table.

Returns None otherwise.

pub fn into_memory(self) -> Option<Memory>

Returns the underlying linear memory if self is a linear memory.

Returns None otherwise.

pub fn into_func(self) -> Option<Func>

Returns the underlying function if self is a function.

Returns None otherwise.

pub fn ty(&self, ctx: impl AsContext) -> ExternType

Returns the type associated with this Extern.

Trait Implementations

impl Clone for Extern

fn clone(&self) -> Extern

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Extern

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

Formats the value using the given formatter.

impl<E: WasmEngine> From<&Extern<E>> for Extern

fn from(value: &Extern<E>) -> Self

Converts to this type from the input type.

impl<E: WasmEngine> From<&Extern> for Extern<E>

fn from(value: &Extern) -> Self

Converts to this type from the input type.