ExternType

wasmtime

Enum ExternType 

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pub enum ExternType {
    Func(FuncType),
    Global(GlobalType),
    Table(TableType),
    Memory(MemoryType),
    Tag(TagType),
}
Expand description

A list of all possible types which can be externally referenced from a WebAssembly module.

This list can be found in ImportType or ExportType, so these types can either be imported or exported.

Variants§

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Func(FuncType)

This external type is the type of a WebAssembly function.

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Global(GlobalType)

This external type is the type of a WebAssembly global.

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Table(TableType)

This external type is the type of a WebAssembly table.

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Memory(MemoryType)

This external type is the type of a WebAssembly memory.

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Tag(TagType)

This external type is the type of a WebAssembly tag.

Implementations§

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impl ExternType

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

Available on crate feature runtime only.

Attempt to return the underlying type of this external type, returning None if it is a different type.

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pub fn unwrap_func(&self) -> &FuncType

Available on crate feature runtime only.

Returns the underlying descriptor of this ExternType, panicking if it is a different type.

§Panics

Panics if self is not of the right type.

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pub fn global(&self) -> Option<&GlobalType>

Available on crate feature runtime only.

Attempt to return the underlying type of this external type, returning None if it is a different type.

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pub fn unwrap_global(&self) -> &GlobalType

Available on crate feature runtime only.

Returns the underlying descriptor of this ExternType, panicking if it is a different type.

§Panics

Panics if self is not of the right type.

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pub fn table(&self) -> Option<&TableType>

Available on crate feature runtime only.

Attempt to return the underlying type of this external type, returning None if it is a different type.

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pub fn unwrap_table(&self) -> &TableType

Available on crate feature runtime only.

Returns the underlying descriptor of this ExternType, panicking if it is a different type.

§Panics

Panics if self is not of the right type.

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pub fn memory(&self) -> Option<&MemoryType>

Available on crate feature runtime only.

Attempt to return the underlying type of this external type, returning None if it is a different type.

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pub fn unwrap_memory(&self) -> &MemoryType

Available on crate feature runtime only.

Returns the underlying descriptor of this ExternType, panicking if it is a different type.

§Panics

Panics if self is not of the right type.

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pub fn tag(&self) -> Option<&TagType>

Available on crate feature runtime only.

Attempt to return the underlying type of this external type, returning None if it is a different type.

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pub fn unwrap_tag(&self) -> &TagType

Available on crate feature runtime only.

Returns the underlying descriptor of this ExternType, panicking if it is a different type.

§Panics

Panics if self is not of the right type.

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pub fn default_value(&self, store: impl AsContextMut) -> Result<Extern>

Available on crate feature runtime only.

Construct a default value, if possible, for the underlying type.

Trait Implementations§

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impl Clone for ExternType

Available on crate feature runtime only.
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fn clone(&self) -> ExternType

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for ExternType

Available on crate feature runtime only.
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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl From<FuncType> for ExternType

Available on crate feature runtime only.
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fn from(ty: FuncType) -> ExternType

Converts to this type from the input type.
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impl From<GlobalType> for ExternType

Available on crate feature runtime only.
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fn from(ty: GlobalType) -> ExternType

Converts to this type from the input type.
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impl From<MemoryType> for ExternType

Available on crate feature runtime only.
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fn from(ty: MemoryType) -> ExternType

Converts to this type from the input type.
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impl From<TableType> for ExternType

Available on crate feature runtime only.
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fn from(ty: TableType) -> ExternType

Converts to this type from the input type.
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impl From<TagType> for ExternType

Available on crate feature runtime only.
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fn from(ty: TagType) -> ExternType

Converts to this type from the input type.

Auto Trait Implementations§

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,

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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,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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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 for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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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)

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>,

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type Error = Infallible

The type returned in the event of a conversion error.
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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>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.