Enum wasmtime::Extern

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

Expand description

An external item to a WebAssembly module, or a list of what can possibly be exported from a wasm module.

This is both returned from Instance::exports as well as required by Instance::new. In other words, this is the type of extracted values from an instantiated module, and it’s also used to provide imported values when instantiating a module.

Variants

`Func(Func)`

A WebAssembly func which can be called.

`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 Val reference types.

`Memory(Memory)`

A WebAssembly linear memory.

`SharedMemory(SharedMemory)`

A WebAssembly shared memory; these are handled separately from Memory.

Implementations

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impl Extern

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

Returns the underlying Func, if this external is a function.

Returns None if this is not a function.

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

Returns the underlying Global, if this external is a global.

Returns None if this is not a global.

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

Returns the underlying Table, if this external is a table.

Returns None if this is not a table.

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

Returns the underlying Memory, if this external is a memory.

Returns None if this is not a memory.

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pub fn into_shared_memory(self) -> Option<SharedMemory>

Returns the underlying SharedMemory, if this external is a shared memory.

Returns None if this is not a shared memory.

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

Returns the type associated with this Extern.

The store argument provided must own this Extern and is used to look up type information.

Panics

Panics if this item does not belong to the store provided.

Trait Implementations

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impl Clone for Extern

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fn clone(&self) -> Extern

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl From<Func> for Extern

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fn from(r: Func) -> Self

Performs the conversion.

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impl From<Global> for Extern

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fn from(r: Global) -> Self

Performs the conversion.

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impl From<Memory> for Extern

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fn from(r: Memory) -> Self

Performs the conversion.

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impl From<SharedMemory> for Extern

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fn from(r: SharedMemory) -> Self

Performs the conversion.

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impl From<Table> for Extern

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fn from(r: Table) -> Self

Performs the conversion.

Auto Trait Implementations

impl !RefUnwindSafe for Extern

impl Send for Extern

impl Sync for Extern

impl Unpin for Extern

impl !UnwindSafe for Extern

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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impl<V, T> VZip<V> for T where
V: MultiLane<T>,

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Enum wasmtime::Extern

Variants

Func(Func)

Global(Global)

Table(Table)

Memory(Memory)

SharedMemory(SharedMemory)

Implementations

impl Extern

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

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

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

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

pub fn into_shared_memory(self) -> Option<SharedMemory>

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

Trait Implementations

impl Clone for Extern

fn clone(&self) -> Extern

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

impl From<Func> for Extern

fn from(r: Func) -> Self

impl From<Global> for Extern

fn from(r: Global) -> Self

impl From<Memory> for Extern

fn from(r: Memory) -> Self

impl From<SharedMemory> for Extern

fn from(r: SharedMemory) -> Self

impl From<Table> for Extern

fn from(r: Table) -> Self

Auto Trait Implementations

impl !RefUnwindSafe for Extern

impl Send for Extern

impl Sync for Extern

impl Unpin for Extern

impl !UnwindSafe for Extern

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Same<T> for T

type Output = T

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

`Func(Func)`

`Global(Global)`

`Table(Table)`

`Memory(Memory)`

`SharedMemory(SharedMemory)`

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

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

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

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,