fix(napi): add napi_async_init and napi_async_destroy (#19234)

We don't have support for "AsyncContext" in "node:async_hooks" 
module, so these two APIs are just noops.

Towards https://github.com/denoland/deno/issues/18610.

cli/napi/async.rs

@@ -2,6 +2,8 @@
 
 use deno_runtime::deno_napi::*;
 
+use crate::check_env;
+
 #[repr(C)]
 pub struct AsyncWork {
   pub data: *mut c_void,
@@ -69,19 +71,22 @@ fn napi_queue_async_work(
   napi_ok
 }
 
-// TODO: Custom async operations.
-
+// NOTE: we don't support "async_hooks::AsyncContext" so these APIs are noops.
 #[napi_sym::napi_sym]
 fn napi_async_init(
-  _env: *mut Env,
+  env: *mut Env,
   _async_resource: napi_value,
   _async_resource_name: napi_value,
-  _result: *mut *mut (),
+  result: *mut *mut (),
 ) -> napi_status {
-  todo!()
+  check_env!(env);
+  *result = ptr::null_mut();
+  napi_ok
 }
 
 #[napi_sym::napi_sym]
-fn napi_async_destroy(_env: *mut Env, _async_context: *mut ()) -> napi_status {
-  todo!()
+fn napi_async_destroy(env: *mut Env, async_context: *mut ()) -> napi_status {
+  check_env!(env);
+  assert!(async_context.is_null());
+  napi_ok
 }

test_napi/make_callback_test.js

@@ -0,0 +1,53 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+import { assertEquals, loadTestLibrary } from "./common.js";
+
+const mc = loadTestLibrary();
+
+Deno.test("napi makeCallback1", function () {
+  const resource = {};
+
+  let callCount = 0;
+  function cb() {
+    callCount++;
+    assertEquals(arguments.length, 0);
+    assertEquals(this, globalThis);
+    return 42;
+  }
+  assertEquals(mc.makeCallback(resource, globalThis, cb), 42);
+  assertEquals(callCount, 1);
+});
+
+Deno.test("napi makeCallback2", function () {
+  const resource = {};
+
+  let callCount = 0;
+  function cb(x) {
+    callCount++;
+    assertEquals(arguments.length, 1);
+    assertEquals(this, globalThis);
+    assertEquals(x, 1337);
+    return 42;
+  }
+  assertEquals(mc.makeCallback(resource, globalThis, cb, 1337), 42);
+  assertEquals(callCount, 1);
+});
+
+Deno.test("napi makeCallback3", function () {
+  const resource = {};
+
+  let callCount = 0;
+
+  function multiArgFunc(arg1, arg2, arg3) {
+    callCount++;
+    assertEquals(arg1, 1);
+    assertEquals(arg2, 2);
+    assertEquals(arg3, 3);
+    return 42;
+  }
+  assertEquals(
+    mc.makeCallback(resource, globalThis, multiArgFunc, 1, 2, 3),
+    42,
+  );
+  assertEquals(callCount, 1);
+});

test_napi/src/lib.rs

@@ -16,6 +16,7 @@ pub mod date;
 pub mod env;
 pub mod error;
 pub mod finalizer;
+pub mod make_callback;
 pub mod mem;
 pub mod numbers;
 pub mod object_wrap;
@@ -162,6 +163,7 @@ unsafe extern "C" fn napi_register_module_v1(
   mem::init(env, exports);
   bigint::init(env, exports);
   symbol::init(env, exports);
+  make_callback::init(env, exports);
 
   init_cleanup_hook(env, exports);
 

test_napi/src/make_callback.rs

@@ -0,0 +1,85 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+use crate::assert_napi_ok;
+use crate::cstr;
+use napi_sys::ValueType::napi_function;
+use napi_sys::*;
+use std::ptr;
+
+extern "C" fn make_callback(
+  env: napi_env,
+  info: napi_callback_info,
+) -> napi_value {
+  const MAX_ARGUMENTS: usize = 10;
+  const RESERVED_ARGUMENTS: usize = 3;
+
+  let mut args = [std::ptr::null_mut(); MAX_ARGUMENTS];
+  let mut argc = MAX_ARGUMENTS;
+  assert_napi_ok!(napi_get_cb_info(
+    env,
+    info,
+    &mut argc,
+    args.as_mut_ptr(),
+    ptr::null_mut(),
+    ptr::null_mut(),
+  ));
+
+  assert!(argc > 0);
+  let resource = args[0];
+  let recv = args[1];
+  let func = args[2];
+
+  let mut argv: Vec<napi_value> = Vec::new();
+  argv.resize(MAX_ARGUMENTS - RESERVED_ARGUMENTS, ptr::null_mut());
+  for i in RESERVED_ARGUMENTS..argc {
+    argv[i - RESERVED_ARGUMENTS] = args[i];
+  }
+
+  let mut func_type: napi_valuetype = -1;
+  assert_napi_ok!(napi_typeof(env, func, &mut func_type));
+
+  let mut resource_name = ptr::null_mut();
+  assert_napi_ok!(napi_create_string_utf8(
+    env,
+    cstr!("test"),
+    usize::MAX,
+    &mut resource_name
+  ));
+
+  let mut context: napi_async_context = ptr::null_mut();
+  assert_napi_ok!(napi_async_init(env, resource, resource_name, &mut context));
+
+  let mut result = ptr::null_mut();
+  assert_eq!(func_type, napi_function);
+  assert_napi_ok!(napi_make_callback(
+    env,
+    context,
+    recv,
+    func,
+    argc - RESERVED_ARGUMENTS,
+    argv.as_mut_ptr(),
+    &mut result
+  ));
+
+  assert_napi_ok!(napi_async_destroy(env, context));
+  result
+}
+
+pub fn init(env: napi_env, exports: napi_value) {
+  let mut fn_: napi_value = ptr::null_mut();
+
+  assert_napi_ok!(napi_create_function(
+    env,
+    ptr::null_mut(),
+    usize::MAX,
+    Some(make_callback),
+    ptr::null_mut(),
+    &mut fn_,
+  ));
+  assert_napi_ok!(napi_set_named_property(
+    env,
+    exports,
+    cstr!("makeCallback"),
+    fn_
+  ));
+}