feat: for-await-of + Symbol.asyncIterator + AsyncFromSyncIterator

crates/oxide_kernel/src/builtin.rs

@@ -242,6 +242,7 @@ pub struct BuiltinWorld {
     pub sym_to_primitive: P<JsObject>,
     pub sym_has_instance: P<JsObject>,
     pub sym_match_all: P<JsObject>,
+    pub sym_async_iterator: P<JsObject>,
     pub stub_objects: Vec<P<JsObject>>,
 }
 
@@ -628,6 +629,7 @@ impl BuiltinWorld {
             BuiltinId::SymToPrimitive => &self.sym_to_primitive,
             BuiltinId::SymHasInstance => &self.sym_has_instance,
             BuiltinId::SymMatchAll => &self.sym_match_all,
+            BuiltinId::SymAsyncIterator => &self.sym_async_iterator,
         }
     }
 
@@ -668,6 +670,7 @@ impl BuiltinWorld {
         let sym_to_primitive = P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null()));
         let sym_has_instance = P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null()));
         let sym_match_all = P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null()));
+        let sym_async_iterator = P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null()));
         let stub_objects = Vec::new();
 
         let world = Self {
@@ -739,6 +742,7 @@ impl BuiltinWorld {
             sym_to_primitive,
             sym_has_instance,
             sym_match_all,
+            sym_async_iterator,
             stub_objects,
         };
         wire_builtin_world_links(&world);
@@ -811,6 +815,7 @@ impl BuiltinWorld {
             sym_to_primitive,
             sym_has_instance,
             sym_match_all,
+            sym_async_iterator,
         ) = if dirty.symbol_family {
             let (symbol_proto, symbol_constructor) = make_named_pair(string_forge, shape_forge, labels, "Symbol");
             (
@@ -824,6 +829,7 @@ impl BuiltinWorld {
                 P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())),
                 P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())),
                 P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())),
+                P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())),
             )
         } else {
             (
@@ -837,6 +843,7 @@ impl BuiltinWorld {
                 current.sym_to_primitive.clone(),
                 current.sym_has_instance.clone(),
                 current.sym_match_all.clone(),
+                current.sym_async_iterator.clone(),
             )
         };
 
@@ -981,6 +988,7 @@ impl BuiltinWorld {
             sym_to_primitive,
             sym_has_instance,
             sym_match_all,
+            sym_async_iterator,
             stub_objects,
         };
         wire_builtin_world_links(&world);

crates/oxide_kernel/src/kernel.rs

@@ -225,7 +225,7 @@ pub struct KernelSession {
 /// 维护注意：每个新增的 `BuiltinWorld` 对象字段都必须加到这里以及
 /// `KernelSession::dirty_since_snapshot()`，以便选择性重置重建正确的
 /// builtin 家族。
-pub const NUM_BUILTINS: usize = 67;
+pub const NUM_BUILTINS: usize = 68;
 
 /// 内置对象枚举 id，与 `BuiltinWorld` 中的存储槽一一对应。
 ///
@@ -301,6 +301,7 @@ pub enum BuiltinId {
     SymToPrimitive = 64,
     SymHasInstance = 65,
     SymMatchAll = 66,
+    SymAsyncIterator = 67,
 }
 
 impl BuiltinId {
@@ -373,6 +374,7 @@ impl BuiltinId {
         BuiltinId::SymToPrimitive,
         BuiltinId::SymHasInstance,
         BuiltinId::SymMatchAll,
+        BuiltinId::SymAsyncIterator,
     ];
 }
 
@@ -557,7 +559,8 @@ impl KernelSession {
                 || gen(BuiltinId::SymIterator) != snap(BuiltinId::SymIterator)
                 || gen(BuiltinId::SymToPrimitive) != snap(BuiltinId::SymToPrimitive)
                 || gen(BuiltinId::SymHasInstance) != snap(BuiltinId::SymHasInstance)
-                || gen(BuiltinId::SymMatchAll) != snap(BuiltinId::SymMatchAll),
+                || gen(BuiltinId::SymMatchAll) != snap(BuiltinId::SymMatchAll)
+                || gen(BuiltinId::SymAsyncIterator) != snap(BuiltinId::SymAsyncIterator),
             math: gen(BuiltinId::MathObject) != snap(BuiltinId::MathObject),
             json: gen(BuiltinId::JsonObject) != snap(BuiltinId::JsonObject),
             date: gen(BuiltinId::DateConstructor) != snap(BuiltinId::DateConstructor)