feat: 支持访问器描述符与 get/set 语法

crates/oxide_vm/src/dispatch/call.rs

@@ -30,17 +30,21 @@ impl Vm {
                 Ok(())
             }
             Err(err_val) => {
-                let msg = if err_val.is_string() {
-                    self.kernel()
-                        .string_forge()
-                        .lookup(err_val.as_string_index())
-                        .unwrap_or_else(|| format!("{err_val}"))
+                let (error, kind) = if err_val.is_object() {
+                    (err_val, self.thrown_error_kind(err_val))
                 } else {
-                    format!("{err_val}")
+                    let msg = if err_val.is_string() {
+                        self.kernel()
+                            .string_forge()
+                            .lookup(err_val.as_string_index())
+                            .unwrap_or_else(|| format!("{err_val}"))
+                    } else {
+                        format!("{err_val}")
+                    };
+                    (crate::builtins::error::create_error(self, &msg), "Error")
                 };
-                let error = crate::builtins::error::create_error(self, &msg);
                 self.exception_value = Some(error);
-                self.pending_error_kind = Some("Error");
+                self.pending_error_kind = Some(kind);
                 self.unwind()
             }
         }

crates/oxide_vm/src/dispatch/property.rs

@@ -127,21 +127,23 @@ impl Vm {
                 self.write_ic_back(obj.shape_id(), ptr);
             }
         } else {
-            let new_shape_id = self.kernel.shape_forge().make_shape(obj.shape_id(), prop_name_si);
-            obj.set_shape_id(new_shape_id);
-            let new_pos = obj.push_prop(value);
-            obj.bump_generation();
-            if let Some(ptr) = obj.prop_ptr_at(new_pos) {
-                self.write_ic_back(new_shape_id, ptr);
-                self.kernel.prop_forge().upsert(
-                    new_shape_id,
-                    PropTemplate {
-                        shape_id: new_shape_id,
-                        prop_name: prop_name_si,
-                        position: new_pos,
-                        generation: obj.generation(),
-                    },
-                );
+            let old_shape = obj.shape_id();
+            self.ordinary_set(obj, prop_name_si, value, receiver)?;
+            if old_shape != obj.shape_id() {
+                if let Some(pos) = self.kernel.shape_forge().lookup_position(obj.shape_id(), prop_name_si) {
+                    if let Some(ptr) = obj.prop_ptr_at(pos) {
+                        self.write_ic_back(obj.shape_id(), ptr);
+                        self.kernel.prop_forge().upsert(
+                            obj.shape_id(),
+                            PropTemplate {
+                                shape_id: obj.shape_id(),
+                                prop_name: prop_name_si,
+                                position: pos,
+                                generation: obj.generation(),
+                            },
+                        );
+                    }
+                }
             }
         }