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A small Wasm Runtime

License: MIT License

Rust 96.17% WebAssembly 3.83%

wasm-rust-chibiwasm-rs's Introduction

chibiwasm

This repository was created for the purpose of learning how Wasm works. Please do not use it in production.

Usage

$ cat
(module
  (func $add (export "add") (param i32 i32) (result i32)
    (local.get 0)
    (local.get 1)
    (i32.add)
  )
)
$ wat2wasm add.wat
$ cargo run -- add.wasm add 1 2
    Finished dev [unoptimized + debuginfo] target(s) in 0.09s
     Running `target/debug/chibiwasm add.wasm add 1 2`
3

Use as a crate

use chibiwasm::{Runtime, Value};

fn main() -> anyhow::Result<()> {
    let mut runtime = Runtime::from_file("examples/fib.wasm", None)?;
    if let Some(output) = runtime.call("fib".into(), vec![Value::I32(10)])? {
        println!("output: {}", output);
    }
    Ok(())
}