feat: works

__wasm/wit-bindgen-sample/engine/boa/boa_engine/src/job.rs

@@ -0,0 +1,58 @@
+use crate::{prelude::JsObject, Context, JsResult, JsValue};
+use gc::{Finalize, Trace};
+
+/// `JobCallback` records
+///
+/// More information:
+///  - [ECMAScript reference][spec]
+///
+/// [spec]: https://tc39.es/ecma262/#sec-jobcallback-records
+#[derive(Debug, Clone, Trace, Finalize)]
+pub struct JobCallback {
+    callback: JsObject,
+}
+
+impl JobCallback {
+    /// `HostMakeJobCallback ( callback )`
+    ///
+    /// The host-defined abstract operation `HostMakeJobCallback` takes argument `callback` (a
+    /// function object) and returns a `JobCallback` Record.
+    ///
+    /// More information:
+    ///  - [ECMAScript reference][spec]
+    ///
+    /// [spec]: https://tc39.es/ecma262/#sec-hostmakejobcallback
+    pub fn make_job_callback(callback: JsObject) -> Self {
+        // 1. Return the JobCallback Record { [[Callback]]: callback, [[HostDefined]]: empty }.
+        Self { callback }
+    }
+
+    /// `HostCallJobCallback ( jobCallback, V, argumentsList )`
+    ///
+    /// The host-defined abstract operation `HostCallJobCallback` takes arguments `jobCallback` (a
+    /// `JobCallback` Record), `V` (an ECMAScript language value), and `argumentsList` (a `List` of
+    /// ECMAScript language values) and returns either a normal completion containing an ECMAScript
+    /// language value or a throw completion.
+    ///
+    /// More information:
+    ///  - [ECMAScript reference][spec]
+    ///
+    /// [spec]: https://tc39.es/ecma262/#sec-hostcalljobcallback
+    pub fn call_job_callback(
+        &self,
+        v: &JsValue,
+        arguments_list: &[JsValue],
+        context: &mut Context,
+    ) -> JsResult<JsValue> {
+        // It must perform and return the result of Call(jobCallback.[[Callback]], V, argumentsList).
+
+        // 1. Assert: IsCallable(jobCallback.[[Callback]]) is true.
+        assert!(
+            self.callback.is_callable(),
+            "the callback of the job callback was not callable"
+        );
+
+        // 2. Return ? Call(jobCallback.[[Callback]], V, argumentsList).
+        self.callback.__call__(v, arguments_list, context)
+    }
+}