Struct wasm_encoder::InstanceSection

pub struct InstanceSection { /* private fields */ }

An encoder for the instance section of WebAssembly components.

Example

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

let mut instances = InstanceSection::new();
instances.export_core_items([("foo", Export::Function(0))]);
instances.instantiate_module(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 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_module<'a, Args, Arg>(
    &mut self,
    module_index: u32,
    args: Args
) -> &mut Self where
    Args: IntoIterator<Item = (&'a str, Arg)>,
    Args::IntoIter: ExactSizeIterator,
    Arg: Into<ModuleArg>, 

Define an instance by instantiating a module.

pub fn export_core_items<'a, Exports, Export>(
    &mut self,
    exports: Exports
) -> &mut Self where
    Exports: IntoIterator<Item = (&'a str, Export)>,
    Exports::IntoIter: ExactSizeIterator,
    Export: Into<Export>, 

Define an instance by exporting core WebAssembly items.

pub fn instantiate_component<'a, Args, Arg>(
    &mut self,
    component_index: u32,
    args: Args
) -> &mut Self where
    Args: IntoIterator<Item = (&'a str, Arg)>,
    Args::IntoIter: ExactSizeIterator,
    Arg: Into<ComponentArg>, 

Define an instance by instantiating a component.

pub fn export_items<'a, Exports, Export>(
    &mut self,
    exports: Exports
) -> &mut Self where
    Exports: IntoIterator<Item = (&'a str, Export)>,
    Exports::IntoIter: ExactSizeIterator,
    Export: Into<ComponentExport>, 

Define an instance by exporting 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’s identifier.

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

Write this section’s header and data 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.