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fix: Array @@species 绑定并暴露真 [[Construct]],隐式返回交付当前 this
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@@ -146,31 +146,48 @@ pub(crate) fn apply_binding_table(
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}
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}
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/// 在原型上绑定一个原生访问器 getter(如 Set/Map 的 `size`),set 恒为 undefined。
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/// 在原型上绑定一个字符串键的原生访问器 getter(如 Set/Map 的 `size`),
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/// set 恒为 undefined。
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///
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/// # 步骤
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/// 1. 构造一个 native getter 函数对象(name 为 `get <prop>`,length 0)。
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/// 2. 为属性名开 shape 槽位并写入访问器 meta。
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/// 1. 以 `get <prop>` 为 name 标签委托到 [`Self::bind_accessor_getter_key`]。
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///
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/// # 注意事项
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/// getter 函数对象登记进 world 释放表,与 `bind_method` 的方法 wrapper 同一生命周期约定
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/// (session 收尾时统一释放)。
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pub(crate) fn bind_accessor_getter(
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core: &Arc<KernelCore>, session: &KernelSession, proto: &mut JsObject, name: &str, getter_fn: *const (),
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) {
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let si = core.perm_interner().intern(name).0;
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let getter_name = format!("get {name}");
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bind_accessor_getter_key(core, session, proto, si, &getter_name, getter_fn)
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}
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/// 在原型上按任意属性键(字符串 intern 键或 well-known symbol 键)绑定一个
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/// 原生访问器 getter,set 恒为 undefined。
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///
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/// # 步骤
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/// 1. 构造一个 native getter 函数对象(name 为 `getter_label`,length 0)。
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/// 2. 为键开 shape 槽位并写入访问器 meta(enumerable=false, configurable=true)。
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///
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/// # 注意事项
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/// getter 函数对象登记进 world 释放表,与 `bind_method` 的方法 wrapper 同一生命周期约定
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/// (session 收尾时统一释放)。
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pub(crate) fn bind_accessor_getter_key(
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core: &Arc<KernelCore>, session: &KernelSession, proto: &mut JsObject, key: u32, getter_label: &str,
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getter_fn: *const (),
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) {
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let shape_forge = core.shape_forge().as_ref();
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let string_forge = core.perm_interner().as_ref();
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let world = session.builtin_world();
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let si = string_forge.intern(name).0;
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let getter_name = format!("get {name}");
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let si_label = string_forge.intern(&getter_name).0;
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let si_label = string_forge.intern(getter_label).0;
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// SAFETY: getter_fn 是转成 *const () 的 NativeFn 函数项指针。
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let getter_fn_ptr = unsafe { oxide_types::object::NativeFnPtr::from_raw(getter_fn) };
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// 选择性重建复用:同家族同槽旧 getter 迁移到新 proto 的访问器槽(proto
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// 槽已由重建收尾重指),不再新建对象。
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let reuse_key =
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oxide_kernel::builtin::FnWrapperKey::new(world.wrapper_family_of(proto as *const JsObject), 0, si, si_label);
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oxide_kernel::builtin::FnWrapperKey::new(world.wrapper_family_of(proto as *const JsObject), 0, key, si_label);
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let getter_ptr = match world.find_fn_wrapper(reuse_key, getter_fn_ptr, 0) {
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Some(ptr) => ptr,
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None => {
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@@ -203,7 +220,7 @@ pub(crate) fn bind_accessor_getter(
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};
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let getter_val = JsValue::from_js_object(getter_ptr);
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let new_shape = shape_forge.make_shape(proto.shape_id(), si);
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let new_shape = shape_forge.make_shape(proto.shape_id(), key);
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proto.set_shape_id(new_shape);
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let pos = proto.push_prop(JsValue::undefined());
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proto.set_accessor_meta(pos, getter_val, JsValue::undefined(), PropAttributes::new(true, false, true));
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