Struct wasm_encoder::component::InstanceSection

pub struct InstanceSection { /* private fields */ }

An encoder for the component instance section.

Example

use wasm_encoder::component::{Component, InstanceSection, IndexRef};

// This assumes there is a module with index 0, a function with index 0,
// a module with index 2, and a global with index 0.
let mut instances = InstanceSection::new();
instances.instantiate(0, [
    ("x", IndexRef::Function(0)),
    ("", IndexRef::Module(2)),
    ("foo", IndexRef::Global(0)),
]);

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

let bytes = component.finish();

Implementations

impl InstanceSection

pub fn new() -> Self

Create a new component 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, I>(&mut self, module: u32, args: I) -> &mut Self where
    I: IntoIterator<Item = (&'a str, IndexRef)>,
    I::IntoIter: ExactSizeIterator, 

Define an instantiation of the given module with the given arguments to the instantiation.

pub fn exports<'a, E>(&mut self, exports: E) -> &mut Self where
    E: IntoIterator<Item = (&'a str, IndexRef)>,
    E::IntoIter: ExactSizeIterator, 

Define an instance by exporting the given exports.

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

This section’s id.

fn encode<S>(&self, sink: &mut S) where
    S: Extend<u8>, 

Write this section’s data and data length prefix into the given sink.

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.