Struct wasm_encoder::ComponentTypeSection

pub struct ComponentTypeSection { /* private fields */ }

An encoder for the type section of WebAssembly components.

Example

use wasm_encoder::{Component, ComponentTypeSection, PrimitiveValType};

let mut types = ComponentTypeSection::new();

// Define a function type of `[string, string] -> string`.
types.function(
  [
    (Some("a"), PrimitiveValType::String),
    (Some("b"), PrimitiveValType::String)
  ],
  PrimitiveValType::String
);

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

let bytes = component.finish();

Implementations

impl ComponentTypeSection

pub fn new() -> Self

Create a new component type section encoder.

pub fn len(&self) -> u32

The number of types in the section.

pub fn is_empty(&self) -> bool

Determines if the section is empty.

pub fn ty(&mut self) -> ComponentTypeEncoder<'_>

Encode a type into this section.

The returned encoder must be finished before adding another type.

pub fn component(&mut self, ty: &ComponentType) -> &mut Self

Define a component type in this type section.

pub fn instance(&mut self, ty: &InstanceType) -> &mut Self

Define an instance type in this type section.

pub fn function<'a, P, T>(
    &mut self,
    params: P,
    result: impl Into<ComponentValType>
) -> &mut Self where
    P: IntoIterator<Item = (Option<&'a str>, T)>,
    P::IntoIter: ExactSizeIterator,
    T: Into<ComponentValType>, 

Define a function type in this type section.

pub fn defined_type(&mut self) -> ComponentDefinedTypeEncoder<'_>

Add a component defined type to this type section.

The returned encoder must be used before adding another type.

Trait Implementations

impl Clone for ComponentTypeSection

fn clone(&self) -> ComponentTypeSection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ComponentSection for ComponentTypeSection

fn id(&self) -> u8

Gets the section identifier for this section.

impl Debug for ComponentTypeSection

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

Formats the value using the given formatter.

impl Default for ComponentTypeSection

fn default() -> ComponentTypeSection

Returns the “default value” for a type.

impl Encode for ComponentTypeSection

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

Encode the type into the given byte sink.