Struct CanonicalFunctionSection

pub struct CanonicalFunctionSection { /* private fields */ }

Available on crate feature component-model only.

An encoder for the canonical function section of WebAssembly components.

Example

use wasm_encoder::{Component, CanonicalFunctionSection, CanonicalOption};

let mut functions = CanonicalFunctionSection::new();
functions.lift(0, 0, [CanonicalOption::UTF8]);

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

let bytes = component.finish();

Implementations

impl CanonicalFunctionSection

pub fn new() -> Self

Construct 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 lift<O>( &mut self, core_func_index: u32, type_index: u32, options: O, ) -> &mut Self

where O: IntoIterator<Item = CanonicalOption>, O::IntoIter: ExactSizeIterator,

Define a function that will lift a core WebAssembly function to the canonical ABI.

pub fn lower<O>(&mut self, func_index: u32, options: O) -> &mut Self

where O: IntoIterator<Item = CanonicalOption>, O::IntoIter: ExactSizeIterator,

Define a function that will lower a canonical ABI function to a core WebAssembly function.

pub fn resource_new(&mut self, ty_index: u32) -> &mut Self

Defines a function which will create an owned handle to the resource specified by ty_index.

pub fn resource_drop(&mut self, ty_index: u32) -> &mut Self

Defines a function which will drop the specified type of handle.

pub fn resource_rep(&mut self, ty_index: u32) -> &mut Self

Defines a function which will return the representation of the specified resource type.

pub fn thread_spawn(&mut self, ty_index: u32) -> &mut Self

Defines a function which will spawns a new thread by invoking a shared function of type ty_index.

pub fn thread_hw_concurrency(&mut self) -> &mut Self

Defines a function which will return the number of threads that can be expected to execute concurrently.

Trait Implementations

impl Clone for CanonicalFunctionSection

fn clone(&self) -> CanonicalFunctionSection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ComponentSection for CanonicalFunctionSection

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 CanonicalFunctionSection

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

Formats the value using the given formatter.

impl Default for CanonicalFunctionSection

fn default() -> CanonicalFunctionSection

Returns the “default value” for a type.

impl Encode for CanonicalFunctionSection

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

Encode the type into the given byte sink.