Struct wasm_encoder::Function

pub struct Function { /* fields omitted */ }

An encoder for a function body within the code section.

Example

use wasm_encoder::{CodeSection, Function, Instruction};

// Define the function body for:
//
//     (func (param i32 i32) (result i32)
//       local.get 0
//       local.get 1
//       i32.add)
let locals = vec![];
let mut func = Function::new(locals);
func.instruction(Instruction::LocalGet(0));
func.instruction(Instruction::LocalGet(1));
func.instruction(Instruction::I32Add);

// Add our function to the code section.
let mut code = CodeSection::new();
code.function(&func);

Implementations

impl Function

pub fn new<L>(locals: L) -> Self where
    L: IntoIterator<Item = (u32, ValType)>,
    L::IntoIter: ExactSizeIterator, 

Create a new function body with the given locals.

pub fn instruction(&mut self, instruction: Instruction<'_>) -> &mut Self

Write an instruction into this function body.

pub fn raw<B>(&mut self, bytes: B) -> &mut Self where
    B: IntoIterator<Item = u8>, 

Add raw bytes to this function's body.