neon/sys/
reference.rs

1use std::mem::MaybeUninit;
2
3use super::{
4    bindings as napi,
5    raw::{Env, Local},
6};
7
8pub unsafe fn new(env: Env, value: Local) -> napi::Ref {
9    let mut result = MaybeUninit::uninit();
10
11    napi::create_reference(env, value, 1, result.as_mut_ptr()).unwrap();
12
13    result.assume_init()
14}
15
16/// # Safety
17/// Must only be used from the same module context that created the reference
18pub unsafe fn reference(env: Env, value: napi::Ref) -> usize {
19    let mut result = MaybeUninit::uninit();
20
21    napi::reference_ref(env, value, result.as_mut_ptr()).unwrap();
22
23    result.assume_init() as usize
24}
25
26/// # Safety
27/// Must only be used from the same module context that created the reference
28pub unsafe fn unreference(env: Env, value: napi::Ref) {
29    let mut result = MaybeUninit::uninit();
30
31    napi::reference_unref(env, value, result.as_mut_ptr()).unwrap();
32
33    if result.assume_init() == 0 {
34        napi::delete_reference(env, value).unwrap();
35    }
36}
37
38/// # Safety
39/// Must only be used from the same module context that created the reference
40pub unsafe fn get(env: Env, value: napi::Ref) -> Local {
41    let mut result = MaybeUninit::uninit();
42
43    napi::get_reference_value(env, value, result.as_mut_ptr()).unwrap();
44
45    result.assume_init()
46}