mirror of
https://github.com/pjh456/OxideJS.git
synced 2026-10-24 02:31:13 +08:00
9eb0944877
- name/message 读取改 ordinary_get:访问器 getter 触发,抛错经 take_uncaught_value 恢复原值传播 - name/message 转换改 to_string_full:Symbol 抛 TypeError,用户 ToPrimitive 异常原样传播 - 非对象 this 保持抛 TypeError(与现行规范 §20.5.3.4 及 test262 invalid-receiver/called-as-function 一致) - 单测补 getter 抛错/Symbol name+message/toString 抛错四例
302 lines
13 KiB
Rust
302 lines
13 KiB
Rust
use std::sync::Arc;
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use oxide_kernel::shape_forge::EMPTY_SHAPE_ID;
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use oxide_runtime_api::{to_string, to_string_full, NativeResult, VmHost};
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use oxide_types::mem::P;
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use oxide_types::object::{JsObject, PropAttributes};
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use oxide_types::value::JsValue;
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fn set_own_message<H: VmHost>(host: &mut H, this: *mut JsObject, args: &[u8]) {
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if args.len() <= 1 {
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return;
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}
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let msg_val = host.reg(args[1]);
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if msg_val.is_undefined() {
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return;
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}
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let msg_str = to_string(msg_val);
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let sf = Arc::clone(host.kernel_core().perm_interner());
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let sh = Arc::clone(host.kernel_core().shape_forge());
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let si = sf.intern("message").0;
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let new_shape = sh.make_shape(EMPTY_SHAPE_ID, si);
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let perm_val = host.new_string(&msg_str);
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unsafe {
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(*this).set_shape_id(new_shape);
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let pos = (*this).push_prop(perm_val);
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// message 按规范为非枚举数据属性(CreateNonEnumerableDataPropertyOrThrow)。
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(*this).set_data_meta(pos, PropAttributes::new(true, false, true));
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}
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}
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/// 按错误类型名创建对应 Error 对象(message 非空时写为自身属性)。
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/// 这是引擎内部构造错误的统一入口,供 VM/native 层抛错使用。
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pub fn create_kind_error<H: VmHost>(host: &mut H, kind: &str, msg: &str) -> JsValue {
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let proto_ptr = match kind {
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"TypeError" => P::as_ptr(&host.session().builtin_world().type_error_proto) as *mut JsObject,
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"RangeError" => P::as_ptr(&host.session().builtin_world().range_error_proto) as *mut JsObject,
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"ReferenceError" => P::as_ptr(&host.session().builtin_world().reference_error_proto) as *mut JsObject,
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"SyntaxError" => P::as_ptr(&host.session().builtin_world().syntax_error_proto) as *mut JsObject,
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"URIError" => P::as_ptr(&host.session().builtin_world().uri_error_proto) as *mut JsObject,
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"EvalError" => P::as_ptr(&host.session().builtin_world().eval_error_proto) as *mut JsObject,
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_ => P::as_ptr(&host.session().builtin_world().error_proto) as *mut JsObject,
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};
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let obj = host.alloc_object(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::from_js_object(proto_ptr)));
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let sf = Arc::clone(host.kernel_core().perm_interner());
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let sh = Arc::clone(host.kernel_core().shape_forge());
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if !msg.is_empty() {
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let si_msg = sf.intern("message").0;
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let shape = sh.make_shape(EMPTY_SHAPE_ID, si_msg);
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let msg_val = host.new_string(msg);
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unsafe {
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(*obj).set_shape_id(shape);
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let pos = (*obj).push_prop(msg_val);
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// message 按规范为非枚举数据属性,避免泄漏进 Object.keys/for-in/JSON。
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(*obj).set_data_meta(pos, PropAttributes::new(true, false, true));
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}
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}
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// 标记 Error 家族标签:Object.prototype.toString 据此输出 `[object Error]`。
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unsafe {
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(*obj).type_tag = JsObject::OBJ_TYPE_ERROR;
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}
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JsValue::from_js_object(obj)
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}
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/// 创建一个带指定 message 的 TypeError 对象。
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pub fn create_type_error<H: VmHost>(host: &mut H, msg: &str) -> JsValue {
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create_kind_error(host, "TypeError", msg)
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}
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/// 创建一个带指定 message 的普通 Error 对象。
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pub fn create_error<H: VmHost>(host: &mut H, msg: &str) -> JsValue {
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create_kind_error(host, "Error", msg)
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}
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/// 从错误文本(形如 `TypeError: msg` / `ReferenceError: msg`)解析类型前缀并创建
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/// 对应 kind 的错误对象;无前缀时创建普通 Error。
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///
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/// # 使用场景
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/// 异常传播链中错误对象被降级为文本(error_text 输出、`last_uncaught_value` 被
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/// 嵌套覆盖后的兜底路径)时,据此恢复错误类型,避免全部塌缩成普通 Error。
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pub fn create_from_text<H: VmHost>(host: &mut H, text: &str) -> JsValue {
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let text = text.strip_prefix("uncaught ").unwrap_or(text);
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for (kind, prefix) in [
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("TypeError", "TypeError: "),
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("ReferenceError", "ReferenceError: "),
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("RangeError", "RangeError: "),
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("SyntaxError", "SyntaxError: "),
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("URIError", "URIError: "),
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("EvalError", "EvalError: "),
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] {
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if let Some(msg) = text.strip_prefix(prefix) {
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return create_kind_error(host, kind, msg);
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}
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}
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if let Some(msg) = text.strip_prefix("Error: ") {
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return create_kind_error(host, "Error", msg);
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}
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create_error(host, text)
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}
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/// 创建一个带指定 message 的 ReferenceError 对象。
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pub fn create_reference_error<H: VmHost>(host: &mut H, msg: &str) -> JsValue {
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create_kind_error(host, "ReferenceError", msg)
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}
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/// 创建一个带指定 message 的 RangeError 对象。
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pub fn create_range_error<H: VmHost>(host: &mut H, msg: &str) -> JsValue {
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create_kind_error(host, "RangeError", msg)
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}
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/// 创建一个带指定 message 的 SyntaxError 对象。
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pub fn create_syntax_error<H: VmHost>(host: &mut H, msg: &str) -> JsValue {
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create_kind_error(host, "SyntaxError", msg)
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}
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/// 创建一个带指定 message 的 URIError 对象。
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pub fn create_uri_error<H: VmHost>(host: &mut H, msg: &str) -> JsValue {
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create_kind_error(host, "URIError", msg)
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}
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macro_rules! error_ctor {
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($name:ident, $proto_field:ident) => {
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/// 对应 Error 子类(如 `TypeError`)的构造函数:接收第一个实参作为 message,
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/// 返回原型链指向对应 prototype 的 Error 对象。
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///
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/// # 注意事项
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/// 无论以 `new` 还是普通函数调用(如 `TypeError.call(obj)`)都新建对象,
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/// 忽略调用方传入的 this——与规范构造器语义一致。
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pub fn $name<H: VmHost>(host: &mut H, args: &[u8]) -> NativeResult {
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let proto_ptr = P::as_ptr(&host.session().builtin_world().$proto_field) as *mut JsObject;
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let this = host.alloc_object(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::from_js_object(proto_ptr)));
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set_own_message(host, this, args);
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NativeResult::Ok(JsValue::from_js_object(this))
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}
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};
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}
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error_ctor!(error_constructor, error_proto);
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error_ctor!(type_error_constructor, type_error_proto);
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error_ctor!(reference_error_constructor, reference_error_proto);
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error_ctor!(range_error_constructor, range_error_proto);
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error_ctor!(syntax_error_constructor, syntax_error_proto);
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error_ctor!(uri_error_constructor, uri_error_proto);
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error_ctor!(eval_error_constructor, eval_error_proto);
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/// 在对象上追加一个非枚举数据属性(writable/configurable=true,enumerable=false),
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/// 与 `CreateNonEnumerableDataPropertyOrThrow` 语义一致。
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fn set_own_data_prop<H: VmHost>(host: &mut H, obj: *mut JsObject, key: &str, val: JsValue) {
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let sf = Arc::clone(host.kernel_core().perm_interner());
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let sh = Arc::clone(host.kernel_core().shape_forge());
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let si = sf.intern(key).0;
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let new_shape = sh.make_shape(unsafe { (*obj).shape_id() }, si);
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unsafe {
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(*obj).set_shape_id(new_shape);
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let pos = (*obj).push_prop(val);
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(*obj).set_data_meta(pos, PropAttributes::new(true, false, true));
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}
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}
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/// `SuppressedError(error, suppressed, message)` 构造器:三参,length=3。
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///
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/// 以规范 CreateSuppressedError 语义建对象,三字段属性创建顺序为
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/// message → error → suppressed(order-of-args-evaluation 严格断言),
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/// message 为 undefined 时省略;三者均非枚举数据属性。
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///
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/// # 边界与前提
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/// - args[0]=this 被忽略:普通调用(无 new)同样新建对象,与既有 Error 子类型一致;
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/// - args[1]=error、args[2]=suppressed 原样存储不转换;
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/// - args[3]=message 走完整 ToString 强制转换:对象经 ToPrimitive(string hint),
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/// Symbol 抛 TypeError;用户 toString 抛出的异常原样传播。
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pub fn suppressed_error_constructor<H: VmHost>(host: &mut H, args: &[u8]) -> NativeResult {
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let proto_ptr = P::as_ptr(&host.session().builtin_world().suppressed_error_proto) as *mut JsObject;
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let obj = host.alloc_object(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::from_js_object(proto_ptr)));
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// message(args[3])非 undefined 时做完整 ToString 转换并先写属性。
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if args.len() > 3 && !host.reg(args[3]).is_undefined() {
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let msg_str = match to_string_full(host.reg(args[3]), host) {
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Ok(s) => s,
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Err(_) => {
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// 对象 toString 抛出的用户异常经 last_uncaught_value 恢复后原样重新抛出;
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// Symbol 等不可转换场景由调用方构造 TypeError。
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if let Some(exc) = host.take_uncaught_value() {
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return NativeResult::Err(exc);
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}
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return NativeResult::Err(create_type_error(host, "Cannot convert value to a string"));
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}
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};
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let msg_val = host.new_string(&msg_str);
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set_own_data_prop(host, obj, "message", msg_val);
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}
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// error / suppressed 依次写非枚举数据属性(原值,不转换)。
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if args.len() > 1 {
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set_own_data_prop(host, obj, "error", host.reg(args[1]));
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}
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if args.len() > 2 {
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set_own_data_prop(host, obj, "suppressed", host.reg(args[2]));
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}
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unsafe {
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(*obj).type_tag = JsObject::OBJ_TYPE_ERROR;
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}
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NativeResult::Ok(JsValue::from_js_object(obj))
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}
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/// dispose 合并路径用:仅 error/suppressed 两个非枚举自有属性(无 message,
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/// 对应规范 DisposeResources 分支的 CreateSuppressedError 调用)。
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///
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/// # 边界与前提
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/// - 错误值/suppressed 值原样存储,不做任何转换;
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/// - 返回对象 proto = suppressed_error_proto,标记 OBJ_TYPE_ERROR。
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pub fn create_suppressed_error<H: VmHost>(host: &mut H, error_val: JsValue, suppressed_val: JsValue) -> JsValue {
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let proto_ptr = P::as_ptr(&host.session().builtin_world().suppressed_error_proto) as *mut JsObject;
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let obj = host.alloc_object(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::from_js_object(proto_ptr)));
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set_own_data_prop(host, obj, "error", error_val);
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set_own_data_prop(host, obj, "suppressed", suppressed_val);
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unsafe {
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(*obj).type_tag = JsObject::OBJ_TYPE_ERROR;
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}
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JsValue::from_js_object(obj)
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}
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/// `Error.prototype.toString`:按 `name: message` 拼接字符串;
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/// 缺少 name/message 时按规范回退到 `"Error"` 或空串。
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///
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/// # 步骤
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/// 1. 非对象 this 直接抛 TypeError(规范 §20.5.3.4 不做 ToObject 装箱)
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/// 2. Get(name):访问器 getter 触发,抛出的用户异常原样传播
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/// 3. name 非 undefined 时 ToString(Symbol 抛 TypeError,用户转换异常传播)
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/// 4. Get(message) 同 name;message 非 undefined 时 ToString
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/// 5. name/message 任一为空串时只返回另一者,否则 `name: message`
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///
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/// # 边界与前提
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/// - name/message 为 Symbol 时按 §7.1.17 抛 TypeError;
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/// - getter 或 ToPrimitive 抛出的用户异常经 `take_uncaught_value` 原值恢复。
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pub fn error_to_string<H: VmHost>(host: &mut H, args: &[u8]) -> NativeResult {
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let this_val = host.reg(args[0]);
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if !this_val.is_object() {
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let err = create_type_error(host, "Error.prototype.toString called on non-object");
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return NativeResult::Err(err);
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}
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let obj = unsafe { &*this_val.as_js_object_ptr() };
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let sf = Arc::clone(host.kernel_core().perm_interner());
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let si_name = sf.intern("name").0;
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let si_msg = sf.intern("message").0;
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let name_str = match host.ordinary_get(obj, si_name, this_val) {
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Ok(v) if v.is_undefined() => "Error".to_string(),
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Ok(v) => match to_string_full(v, host) {
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Ok(s) => s,
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Err(e) => return NativeResult::Err(crate::iterator::engine_error(host, &e)),
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},
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Err(e) => return NativeResult::Err(crate::iterator::engine_error(host, &e)),
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};
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let msg_str = match host.ordinary_get(obj, si_msg, this_val) {
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Ok(v) if v.is_undefined() => String::new(),
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Ok(v) => match to_string_full(v, host) {
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Ok(s) => s,
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Err(e) => return NativeResult::Err(crate::iterator::engine_error(host, &e)),
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},
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Err(e) => return NativeResult::Err(crate::iterator::engine_error(host, &e)),
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};
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let result = if name_str.is_empty() {
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msg_str
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} else if msg_str.is_empty() {
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name_str
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} else {
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format!("{}: {}", name_str, msg_str)
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};
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NativeResult::Ok(host.new_string(&result))
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}
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/// `Error.prototype.stack` getter:输出 `name: message` 头后附调用栈函数名列表。
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pub fn error_stack_getter<H: VmHost>(host: &mut H, args: &[u8]) -> NativeResult {
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let this_val = host.reg(args[0]);
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let (name_str, msg_str) = if this_val.is_object() {
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let obj = unsafe { &*this_val.as_js_object_ptr() };
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let sf = Arc::clone(host.kernel_core().perm_interner());
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let si_name = sf.intern("name").0;
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let si_msg = sf.intern("message").0;
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let n = host
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.resolve_property(obj, si_name)
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.and_then(|v| host.lookup_str(v))
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.unwrap_or_else(|| "Error".to_string());
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let m = host
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.resolve_property(obj, si_msg)
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.and_then(|v| host.lookup_str(v))
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.unwrap_or_default();
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(n, m)
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} else {
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("Error".to_string(), String::new())
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};
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let header = oxide_runtime_api::format_error_message(&name_str, &msg_str);
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let mut result = header;
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let names = host.call_stack_function_names();
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for n in &names {
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result.push_str(&format!("\n at {} (<unknown>:0:0)", n));
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}
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NativeResult::Ok(host.new_string(&result))
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}
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