Struct ComponentInstanceSection

pub struct ComponentInstanceSection { /* private fields */ }

Available on crate feature component-model only.

An encoder for the instance section of WebAssembly components.

Example

use wasm_encoder::{Component, ComponentInstanceSection, ComponentExportKind};

let mut instances = ComponentInstanceSection::new();
instances.export_items([("foo", ComponentExportKind::Func, 0)]);
instances.instantiate(1, [("foo", ComponentExportKind::Instance, 0)]);

let mut component = Component::new();
component.section(&instances);

let bytes = component.finish();

Implementations

impl ComponentInstanceSection

pub fn new() -> Self

Create a new instance section encoder.

pub fn len(&self) -> u32

The number of instances in the section.

pub fn is_empty(&self) -> bool

Determines if the section is empty.

pub fn instantiate<A, S>(&mut self, component_index: u32, args: A) -> &mut Self

where A: IntoIterator<Item = (S, ComponentExportKind, u32)>, A::IntoIter: ExactSizeIterator, S: AsRef<str>,

Define an instance by instantiating a component.

pub fn export_items<'a, E>(&mut self, exports: E) -> &mut Self

where E: IntoIterator<Item = (&'a str, ComponentExportKind, u32)>, E::IntoIter: ExactSizeIterator,

Define an instance by exporting items.

Trait Implementations

impl Clone for ComponentInstanceSection

fn clone(&self) -> ComponentInstanceSection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ComponentSection for ComponentInstanceSection

fn id(&self) -> u8

Gets the section identifier for this section.

fn append_to_component(&self, dst: &mut Vec<u8>)

Appends this section to the specified destination list of bytes.

impl Debug for ComponentInstanceSection

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

Formats the value using the given formatter.

impl Default for ComponentInstanceSection

fn default() -> ComponentInstanceSection

Returns the “default value” for a type.

impl Encode for ComponentInstanceSection

fn encode(&self, sink: &mut Vec<u8>)

Encode the type into the given byte sink.