feat(npm): implement Node API (#13633)

This PR implements the NAPI for loading native modules into Deno. 

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
Co-authored-by: DjDeveloper <43033058+DjDeveloperr@users.noreply.github.com>
Co-authored-by: Ryan Dahl <ry@tinyclouds.org>

1 files changed, 112 insertions, 0 deletions

diff --git a/test_napi/src/async.rs b/test_napi/src/async.rs
new file mode 100644
index 000000000..d14871a7c
--- /dev/null
+++ b/test_napi/src/async.rs
@@ -0,0 +1,112 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use napi_sys::Status::napi_ok;
+use napi_sys::ValueType::napi_function;
+use napi_sys::*;
+use std::os::raw::c_void;
+use std::ptr;
+
+pub struct Baton {
+  called: bool,
+  func: napi_ref,
+  task: napi_async_work,
+}
+
+unsafe extern "C" fn execute(_env: napi_env, data: *mut c_void) {
+  let baton: &mut Baton = &mut *(data as *mut Baton);
+  assert!(!baton.called);
+  assert!(!baton.func.is_null());
+
+  baton.called = true;
+}
+
+unsafe extern "C" fn complete(
+  env: napi_env,
+  status: napi_status,
+  data: *mut c_void,
+) {
+  assert!(status == napi_ok);
+  let baton: Box<Baton> = Box::from_raw(data as *mut Baton);
+  assert!(baton.called);
+  assert!(!baton.func.is_null());
+
+  let mut global: napi_value = ptr::null_mut();
+  assert!(napi_get_global(env, &mut global) == napi_ok);
+
+  let mut callback: napi_value = ptr::null_mut();
+  assert!(napi_get_reference_value(env, baton.func, &mut callback) == napi_ok);
+
+  let mut _result: napi_value = ptr::null_mut();
+  assert!(
+    napi_call_function(env, global, callback, 0, ptr::null(), &mut _result)
+      == napi_ok
+  );
+
+  assert!(napi_delete_reference(env, baton.func) == napi_ok);
+  assert!(napi_delete_async_work(env, baton.task) == napi_ok);
+}
+
+extern "C" fn test_async_work(
+  env: napi_env,
+  info: napi_callback_info,
+) -> napi_value {
+  let (args, argc, _) = crate::get_callback_info!(env, info, 1);
+  assert_eq!(argc, 1);
+
+  let mut ty = -1;
+  assert!(unsafe { napi_typeof(env, args[0], &mut ty) } == napi_ok);
+  assert_eq!(ty, napi_function);
+
+  let mut resource_name: napi_value = ptr::null_mut();
+  assert!(
+    unsafe {
+      napi_create_string_utf8(
+        env,
+        "test_async_resource\0".as_ptr() as *const i8,
+        usize::MAX,
+        &mut resource_name,
+      )
+    } == napi_ok
+  );
+
+  let mut async_work: napi_async_work = ptr::null_mut();
+
+  let mut func: napi_ref = ptr::null_mut();
+  assert!(
+    unsafe { napi_create_reference(env, args[0], 1, &mut func) } == napi_ok
+  );
+  let baton = Box::new(Baton {
+    called: false,
+    func,
+    task: async_work,
+  });
+
+  assert!(
+    unsafe {
+      napi_create_async_work(
+        env,
+        ptr::null_mut(),
+        resource_name,
+        Some(execute),
+        Some(complete),
+        Box::into_raw(baton) as *mut c_void,
+        &mut async_work,
+      )
+    } == napi_ok
+  );
+  assert!(unsafe { napi_queue_async_work(env, async_work) } == napi_ok);
+
+  ptr::null_mut()
+}
+
+pub fn init(env: napi_env, exports: napi_value) {
+  let properties = &[crate::new_property!(
+    env,
+    "test_async_work\0",
+    test_async_work
+  )];
+
+  unsafe {
+    napi_define_properties(env, exports, properties.len(), properties.as_ptr())
+  };
+}