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chore: 清理 well-known symbol 对象冒充路径的读侧死代码

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彭俊皓
2026-10-05 17:58:13 +00:00
parent 75810cb8e7
commit 3330c0fb8c
5 changed files with 24 additions and 75 deletions
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crates/oxide_runtime_api/src/coercion.rs
+3 -49
View File
@@ -977,18 +977,10 @@ fn string_to_bigint_full<H: VmHost>(host: &mut H, s: &str) -> Result<JsValue, St
Ok(host.new_bigint(if neg { -m } else { m }))
}
/// `String()` 构造器的字符串转换（§21.1.1.1）：原始 Symbol 值（及本引擎以空对象
/// 表示的 well-known symbol）返回描述串 `Symbol(desc)`（步骤 2a）；其余走完整
/// ToString（步骤 3）——装箱 Symbol 的 ToPrimitive 返回 Symbol 本体，ToString 抛
/// TypeError。
/// `String()` 构造器的字符串转换（§21.1.1.1）：原始 Symbol 值返回描述串
/// `Symbol(desc)`（步骤 2a）；其余走完整 ToString（步骤 3）——装箱 Symbol 的
/// ToPrimitive 返回 Symbol 本体，ToString 抛 TypeError。
pub fn to_string_for_string_constructor<H: VmHost>(val: JsValue, host: &mut H) -> Result<String, String> {
if val.is_object() {
if let Some(id) = well_known_symbol_id(host, val.as_js_object_ptr()) {
if let Some(name) = well_known_symbol_name(id) {
return Ok(format!("Symbol({name})"));
}
}
}
// 原始 Symbol：步骤 2a，SymbolDescriptiveString（不经 ToString）。
if val.is_symbol() {
let desc = host.symbol_description(val.as_symbol_index()).unwrap_or("");
@@ -1002,44 +994,6 @@ pub fn to_string_for_string_constructor<H: VmHost>(val: JsValue, host: &mut H) -
Ok(to_string(primitive))
}
/// well-known symbol 以空对象存于 builtin world；把一个对象指针反查回它的
/// well-known symbol id（0..WELL_KNOWN_SYMBOL_COUNT），非 well-known symbol 返回 None。
pub fn well_known_symbol_id<H: VmHost + ?Sized>(host: &H, ptr: *mut JsObject) -> Option<u32> {
if ptr.is_null() {
return None;
}
let world = host.session().builtin_world();
if std::ptr::eq(ptr, world.sym_iterator.as_ptr()) {
Some(0)
} else if std::ptr::eq(ptr, world.sym_match.as_ptr()) {
Some(1)
} else if std::ptr::eq(ptr, world.sym_replace.as_ptr()) {
Some(2)
} else if std::ptr::eq(ptr, world.sym_search.as_ptr()) {
Some(3)
} else if std::ptr::eq(ptr, world.sym_split.as_ptr()) {
Some(4)
} else if std::ptr::eq(ptr, world.sym_to_primitive.as_ptr()) {
Some(5)
} else if std::ptr::eq(ptr, world.sym_has_instance.as_ptr()) {
Some(6)
} else if std::ptr::eq(ptr, world.sym_match_all.as_ptr()) {
Some(7)
} else if std::ptr::eq(ptr, world.sym_async_iterator.as_ptr()) {
Some(8)
} else if std::ptr::eq(ptr, world.sym_to_string_tag.as_ptr()) {
Some(9)
} else if std::ptr::eq(ptr, world.sym_species.as_ptr()) {
Some(10)
} else if std::ptr::eq(ptr, world.sym_async_dispose.as_ptr()) {
Some(11)
} else if std::ptr::eq(ptr, world.sym_dispose.as_ptr()) {
Some(12)
} else {
None
}
}
/// well-known symbol id 的描述名（如 id 9 对应 `Symbol.toStringTag`）。
pub fn well_known_symbol_name(id: u32) -> Option<&'static str> {
oxide_types::private_key::WELL_KNOWN_SYMBOL_NAMES.get(id as usize).copied()
crates/oxide_runtime_api/src/lib.rs
+2 -2
View File
@@ -23,8 +23,8 @@ pub use coercion::{
materialize_string_box, push_to_string, push_units_to, relational_compare, same_value, same_value_zero,
strict_equality, string_concat, string_value_eq, to_bigint_full, to_boolean, to_int32, to_integer_or_infinity,
to_length, to_number, to_number_full, to_object, to_primitive, to_string, to_string_for_string_constructor,
to_string_full, to_string_value_full, to_uint32, to_units_full, well_known_symbol_id, well_known_symbol_name,
write_number_into, ToPrimitiveHint,
to_string_full, to_string_value_full, to_uint32, to_units_full, well_known_symbol_name, write_number_into,
ToPrimitiveHint,
};
pub use host::VmHost;
pub use native_result::NativeResult;