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fix: Function .length/.name 补 writable:false、enumerable:false 描述符属性

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彭俊皓
2026-06-29 00:05:41 +08:00
parent dce2f7a7f1
commit 22aae05749
1 changed files with 14 additions and 5 deletions
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crates/oxide_kernel/src/builtin.rs
+14 -5
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@@ -248,10 +248,14 @@ fn make_pair(
ctor.set_function(true); ctor.set_function(true);
// Pre-allocate slots: proto[0]="constructor", ctor[0]="prototype", ctor[1]="name" // Pre-allocate slots: proto[0]="constructor", ctor[0]="prototype", ctor[1]="name"
proto.ensure_hash_props().push(JsValue::undefined()); // placeholder, set by wire_ctor_proto proto.ensure_hash_props().push(JsValue::undefined()); // placeholder
ctor.ensure_hash_props().push(JsValue::undefined()); // placeholder, set by wire_ctor_proto ctor.ensure_hash_props().push(JsValue::undefined()); // placeholder for "prototype"
// Set the actual name value immediately (vec[1]) // Set the actual name value immediately (ctor vec[1])
ctor.ensure_hash_props().push(JsValue::perm_string(string_forge.string_ptr(name_si))); ctor.ensure_hash_props().push(JsValue::perm_string(string_forge.string_ptr(name_si)));
// Set attribute metadata: .prototype (ctor[0]) = writable:false, enumerable:false, configurable:false
ctor.set_data_meta(0u32, oxide_types::object::PropAttributes::new(false, false, false));
// .name (ctor[1]) = writable:false, enumerable:false, configurable:true
ctor.set_data_meta(1u32, oxide_types::object::PropAttributes::new(false, false, true));
(P::new(proto), P::new(ctor)) (P::new(proto), P::new(ctor))
} }
@@ -1149,18 +1153,23 @@ impl BuiltinWorld {
// callers, all of which use fn-item expressions). // callers, all of which use fn-item expressions).
wrapper.set_native_fn(Some(native_fn_ptr)); wrapper.set_native_fn(Some(native_fn_ptr));
wrapper.set_native_arg_count(arg_count); wrapper.set_native_arg_count(arg_count);
// 设置 .length (ES spec: Function.length = formal parameter count, excluding rest/default) // 设置 .length (ES spec: Function.length = formal parameter count,
// {[[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true})
let si_length = string_forge.intern("length").0; let si_length = string_forge.intern("length").0;
let length_shape = shape_forge.make_shape(wrapper.shape_id(), si_length); let length_shape = shape_forge.make_shape(wrapper.shape_id(), si_length);
wrapper.set_shape_id(length_shape); wrapper.set_shape_id(length_shape);
wrapper.ensure_hash_props().push(JsValue::int(arg_count as i32)); wrapper.ensure_hash_props().push(JsValue::int(arg_count as i32));
// 设置 .name let length_pos = wrapper.hash_props_vec().map_or(0, |v| v.len() as u32).saturating_sub(1);
wrapper.set_data_meta(length_pos, oxide_types::object::PropAttributes::new(false, false, true));
// 设置 .name ({[[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: true})
let si_name = string_forge.intern("name").0; let si_name = string_forge.intern("name").0;
let name_shape = shape_forge.make_shape(wrapper.shape_id(), si_name); let name_shape = shape_forge.make_shape(wrapper.shape_id(), si_name);
wrapper.set_shape_id(name_shape); wrapper.set_shape_id(name_shape);
wrapper wrapper
.ensure_hash_props() .ensure_hash_props()
.push(JsValue::perm_string(string_forge.string_ptr(si))); .push(JsValue::perm_string(string_forge.string_ptr(si)));
let name_pos = wrapper.hash_props_vec().map_or(0, |v| v.len() as u32).saturating_sub(1);
wrapper.set_data_meta(name_pos, oxide_types::object::PropAttributes::new(false, false, true));
let wrapper_val = JsValue::from_js_object(Box::into_raw(wrapper)); let wrapper_val = JsValue::from_js_object(Box::into_raw(wrapper));
let new_shape = shape_forge.make_shape(proto.shape_id(), si); let new_shape = shape_forge.make_shape(proto.shape_id(), si);
proto.set_shape_id(new_shape); proto.set_shape_id(new_shape);