3 releases
0.1.2 | Nov 4, 2021 |
---|---|
0.1.1 | Nov 4, 2021 |
0.1.0 | Nov 4, 2021 |
#1195 in Embedded development
21 downloads per month
1.5MB
41K
SLoC
Contains (ELF exe/lib, 525KB) rom.elf, (ELF exe/lib, 80KB) rom.elf
no_std Rust mJS Bindings
From mJS repository:
mJS is designed for microcontrollers with limited resources. Main design goals are: small footprint and simple C/C++ interoperability. mJS implements a strict subset of ES6 (JavaScript version 6).
[dependencies]
mjs-sys = { version = "0.1", features = ["platform-nrf52"] }
Example
fn main() {
let mut vm = mjs_sys::VM::create();
// Basic call
let val = vm.exec(b"1 / 2\0").unwrap();
if val.is_number() {
println!("Result: {}", val.as_double().unwrap());
}
// Call JS function from Rust
let mut js_function = vm.exec(b"
function foobar(x) {
return 42 + x;
}
foobar
\0").unwrap();
if js_function.is_function() {
let this = None;
let x = vm.make_number(10.);
let args = &[&x];
let res = js_function.call(this, args).unwrap();
if res.is_number() {
println!("Result: {}", res.as_double().unwrap());
}
}
// Call Rust function from JS
fn rust_function(mjs: *mut mjs_sys::mjs) {
let mut vm = mjs_sys::VM::from_inner(mjs);
let x = vm.arg(0).unwrap().as_int().unwrap();
println!("JS -> Rust: {}", x);
}
let js_function = vm.make_foreign(rust_function as _);
vm.global().set(b"rust", js_function).unwrap();
vm.exec(b"rust(42)\0").unwrap();
vm.destroy();
}