napi_sys_ohos/
lib.rs

1// borrowed from https://github.com/neon-bindings/neon/tree/main/crates/neon/src/sys/bindings
2
3#![allow(ambiguous_glob_reexports)]
4
5#[cfg(any(target_env = "msvc", feature = "dyn-symbols"))]
6macro_rules! generate {
7  (extern "C" {
8    $(fn $name:ident($($param:ident: $ptype:ty$(,)?)*)$( -> $rtype:ty)?;)+
9  }) => {
10    struct Napi {
11      $(
12        $name: unsafe extern "C" fn(
13          $($param: $ptype,)*
14        )$( -> $rtype)*,
15      )*
16    }
17
18    #[inline(never)]
19    fn panic_load<T>() -> T {
20      panic!("Node-API symbol has not been loaded")
21    }
22
23    static mut NAPI: Napi = {
24      $(
25        unsafe extern "C" fn $name($(_: $ptype,)*)$( -> $rtype)* {
26          panic_load()
27        }
28      )*
29
30      Napi {
31        $(
32          $name,
33        )*
34      }
35    };
36
37    #[allow(clippy::missing_safety_doc)]
38    pub unsafe fn load(
39      host: &libloading::Library,
40    ) -> Result<(), libloading::Error> {
41      NAPI = Napi {
42        $(
43          $name: {
44            let symbol: Result<libloading::Symbol<unsafe extern "C" fn ($(_: $ptype,)*)$( -> $rtype)*>, libloading::Error> = host.get(stringify!($name).as_bytes());
45            match symbol {
46              Ok(f) => *f,
47              Err(e) => {
48                #[cfg(debug_assertions)] {
49                  eprintln!("Load Node-API [{}] from host runtime failed: {}", stringify!($name), e);
50                }
51                NAPI.$name
52              }
53            }
54          },
55        )*
56      };
57
58      Ok(())
59    }
60
61    $(
62      #[inline]
63      #[allow(clippy::missing_safety_doc)]
64      pub unsafe fn $name($($param: $ptype,)*)$( -> $rtype)* {
65        (NAPI.$name)($($param,)*)
66      }
67    )*
68  };
69}
70
71#[cfg(not(any(target_env = "msvc", feature = "dyn-symbols")))]
72macro_rules! generate {
73  (extern "C" {
74    $(
75      $(#[$attr:meta])*
76      fn $name:ident($($param:ident: $ptype:ty$(,)?)*)$( -> $rtype:ty)?;
77    )+
78  }) => {
79    extern "C" {
80      $(
81        $(#[$attr])*
82        pub fn $name($($param: $ptype,)*)$( -> $rtype)*;
83      ) *
84    }
85  };
86}
87
88mod functions;
89mod types;
90
91pub use functions::*;
92pub use types::*;
93
94/// Loads N-API symbols from host process.
95/// Must be called at least once before using any functions in bindings or
96/// they will panic.
97/// Safety: `env` must be a valid `napi_env` for the current thread
98#[cfg(any(target_env = "msvc", feature = "dyn-symbols"))]
99#[allow(clippy::missing_safety_doc)]
100pub unsafe fn setup() -> libloading::Library {
101  match load_all() {
102    Err(err) => panic!("{}", err),
103    Ok(l) => l,
104  }
105}
106
107// On OpenHarmony we need to link against `ace_napi.z`.
108#[cfg_attr(target_env = "ohos", link(name = "ace_napi.z"))]
109extern "C" {}
napi_sys_ohos/lib.rs

napi_sys_ohos/
lib.rs
