Struct Tag

pub struct Tag { /* private fields */ }

Expand description

A WebAssembly tag.

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impl Tag

pub fn new(store: impl AsContextMut, ty: &TagType) -> Result<Tag, Error>

Create a new tag instance from a given TagType.

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This function will return an OutOfMemory error when memory allocation fails. See the OutOfMemory type’s documentation for details on Wasmtime’s out-of-memory handling.

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

Returns the underlying type of this tag.

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Panics if store does not own this tag.

pub fn debug_index_in_store(&self) -> u64

Returns a stable identifier for this tag within its store.

This allows distinguishing tags when introspecting them e.g. via debug APIs.

pub fn eq(a: &Tag, b: &Tag, store: impl AsContext) -> bool

Determines whether this tag is reference equal to the other given tag in the given store.

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Panics if either tag do not belong to the given store.

Trait Implementations§

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impl Clone for Tag

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fn clone(&self) -> Tag

Returns a duplicate 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 Debug for Tag

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

Formats the value using the given formatter. Read more

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impl From<Tag> for Extern

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fn from(t: Tag) -> Extern

Converts to this type from the input type.

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impl Copy for Tag

Auto Trait Implementations§

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impl UnwindSafe for Tag

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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into 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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