2 releases
0.1.1 | Feb 26, 2024 |
---|---|
0.1.0 | Feb 26, 2024 |
#50 in #javascript-engine
Used in rusty_hermes
6KB
libhermesabi-sys
Note: Currently only supports on Linux and macOS. Adding Windows support should be trivial.
This crate contains bindgen-generated Rust bindings for Hermes C ABI.
Requirements
Before building Hermes, install the required dependencies:
Ubuntu
apt install cmake git ninja-build libicu-dev python zip libreadline-dev
Arch
pacman -S cmake git ninja icu python zip readline
macOS via Homebrew
brew install cmake git ninja
Examples
use libhermesabi_sys::*;
use std::ffi::CString;
unsafe extern "C" fn release_wrapper(_buf: *mut HermesABIBuffer) {}
fn main() {
unsafe {
let vtable_ptr = get_hermes_abi_vtable();
let vtable = &*vtable_ptr;
let config = std::ptr::null();
let runtime_ptr = (vtable.make_hermes_runtime.unwrap())(config);
let runtime = &*runtime_ptr;
let runtime_vt = &*runtime.vt;
let script = String::from("x = 1 + 2");
let script_url = CString::new("./src/test.js").expect("CString::new failed");
let vtable = HermesABIBufferVTable {
release: Some(release_wrapper),
};
let mut x = HermesABIBuffer {
vtable: &vtable,
data: script.as_ptr(),
size: script.len(),
};
let buffer_ptr = &mut x as *mut HermesABIBuffer;
let eval = runtime_vt.evaluate_javascript_source.unwrap();
let v = eval(
runtime_ptr,
buffer_ptr,
script_url.as_ptr(),
script_url.as_bytes().len(),
);
assert_eq!(v.value.data.number, 3.0);
}
}
No runtime deps
~0–2.1MB
~43K SLoC