Struct wasm_encoder::component::FunctionSection

pub struct FunctionSection { /* fields omitted */ }

An encoder for the component function section.

Example

use wasm_encoder::component::{Component, FunctionSection, CanonicalOption};

// This assumes there is a function type with
// index 0 and a target adapter function with index 0.
let mut functions = FunctionSection::new();
functions.function(0, &[CanonicalOption::UTF8], 0);

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

let bytes = component.finish();

Implementations

impl FunctionSection

pub fn new() -> Self

Create a new component function section encoder.

pub fn len(&self) -> u32

The number of functions in the section.

pub fn is_empty(&self) -> bool

Determines if the section is empty.

pub fn function(
    &mut self,
    type_index: u32,
    options: &[CanonicalOption],
    target_index: u32
) -> &mut Self

Define a function in the function section.

type_index must be to a function type. target_index must be to an adapter function.

Trait Implementations

impl Clone for FunctionSection

fn clone(&self) -> FunctionSection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ComponentSection for FunctionSection

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 FunctionSection

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

Formats the value using the given formatter.

impl Default for FunctionSection

fn default() -> FunctionSection

Returns the “default value” for a type.