Struct Tag

pub struct Tag(pub(crate) BackendTag);

A WebAssembly tag instance.

A tag instance is the runtime representation of a tag variable.

Spec: https://webassembly.github.io/spec/core/exec/runtime.html#tag-instances

Tuple Fields

0: BackendTag

Implementations

impl Tag

pub fn new<P: Into<Box<[Type]>>>(store: &mut impl AsStoreMut, params: P) -> Self

Create a new tag with event of type P -> [], that is a function that takes parameters P and has no return value.

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

Returns the TagType of the tag.

pub(crate) fn from_vm_extern( store: &mut impl AsStoreMut, vm_extern: VMExternTag, ) -> Self

pub fn is_from_store(&self, store: &impl AsStoreRef) -> bool

Checks whether this tag can be used with the given context.

pub(crate) fn to_vm_extern(&self) -> VMExtern

Create a VMExtern from self.

Trait Implementations

impl Clone for Tag

fn clone(&self) -> Tag

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Tag

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

Formats the value using the given formatter.

impl<'a> Exportable<'a> for Tag

fn get_self_from_extern(_extern: &'a Extern) -> Result<&'a Self, ExportError>

Implementation of how to get the export corresponding to the implementing type from an Instance by name.

impl From<BackendTag> for Tag

fn from(value: BackendTag) -> Self

Converts to this type from the input type.

impl From<Tag> for Extern

fn from(r: Tag) -> Self

Converts to this type from the input type.

impl PartialEq for Tag

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Tag

impl StructuralPartialEq for Tag