Struct InstanceSection

pub struct InstanceSection { /* private fields */ }

Available on crate feature component-model only.

An encoder for the core instance section of WebAssembly components.

Example

use wasm_encoder::{Component, InstanceSection, ExportKind, ModuleArg};

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

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

let bytes = component.finish();

Implementations

impl InstanceSection

pub fn new() -> Self

Create a new core 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, module_index: u32, args: A) -> &mut Self

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

Define an instance by instantiating a core module.

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

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

Define an instance by exporting core WebAssembly items.

Trait Implementations

impl Clone for InstanceSection

fn clone(&self) -> InstanceSection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ComponentSection for InstanceSection

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 InstanceSection

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

Formats the value using the given formatter.

impl Default for InstanceSection

fn default() -> InstanceSection

Returns the “default value” for a type.

impl Encode for InstanceSection

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

Encode the type into the given byte sink.