Struct wasm_encoder::GlobalSection

pub struct GlobalSection { /* fields omitted */ }

An encoder for the global section.

Example

use wasm_encoder::{Module, GlobalSection, GlobalType, Instruction, ValType};

let mut globals = GlobalSection::new();
globals.global(
    GlobalType {
        val_type: ValType::I32,
        mutable: false,
    },
    &Instruction::I32Const(42),
);

let mut module = Module::new();
module.section(&globals);

let wasm_bytes = module.finish();

Implementations

impl GlobalSection

pub fn new() -> Self

Create a new global section encoder.

pub fn len(&self) -> u32

How many globals have been defined inside this section so far?

pub fn is_empty(&self) -> bool

Determines if the section is empty.

pub fn global(
    &mut self,
    global_type: GlobalType,
    init_expr: &Instruction<'_>
) -> &mut Self

Define a global.

pub fn raw(&mut self, data: &[u8]) -> &mut Self

Add a raw byte slice into this code section as a global.

Trait Implementations

impl Clone for GlobalSection

fn clone(&self) -> GlobalSection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GlobalSection

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

Formats the value using the given formatter.

impl Default for GlobalSection

fn default() -> GlobalSection

Returns the “default value” for a type.

impl Section for GlobalSection

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.