refactor: 符号属性键核心推导改经 realm 维度编码

Cargo.lock

@@ -1160,7 +1160,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_builtins"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "chrono",
  "fast-float",
@@ -1185,7 +1185,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_bytecode"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "num-bigint",
  "oxide_log",
@@ -1193,7 +1193,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cfg"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxide_bytecode",
  "oxide_emit",
@@ -1204,7 +1204,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cli"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "ansi_term",
  "bumpalo",
@@ -1225,7 +1225,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_code_cache"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "lru",
  "oxide_bytecode",
@@ -1234,7 +1234,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_compiler"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1253,7 +1253,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_dce"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1267,7 +1267,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_emit"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "num-bigint",
  "oxc_allocator",
@@ -1282,7 +1282,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_ir"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxide_bytecode",
  "oxide_log",
@@ -1291,7 +1291,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_kernel"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1306,7 +1306,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_liveness"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1318,7 +1318,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_log"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "tracing",
  "tracing-appender",
@@ -1327,7 +1327,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_parser"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxc_allocator",
  "oxc_ast",
@@ -1342,7 +1342,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_regalloc"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1358,7 +1358,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_runtime_api"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1370,7 +1370,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_test262"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1387,7 +1387,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_types"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "bumpalo",
  "hashbrown 0.14.5",
@@ -1399,7 +1399,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_vm"
-version = "0.8.50"
+version = "0.8.51"
 dependencies = [
  "bumpalo",
  "chrono",

Cargo.toml

@@ -22,7 +22,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.8.50"
+version = "0.8.51"
 edition = "2021"
 license = "MIT"
 rust-version = "1.80"

crates/oxide_runtime_api/src/coercion.rs

@@ -985,8 +985,9 @@ fn string_to_bigint_full<H: VmHost>(host: &mut H, s: &str) -> Result<JsValue, St
 /// 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> {
     // 原始 Symbol：步骤 2a，SymbolDescriptiveString（不经 ToString）。
+    // 描述表按 realm 内局部下标索引，取局部下标（realm 0 与全载荷一致）。
     if val.is_symbol() {
-        let desc = host.symbol_description(val.as_symbol_index()).unwrap_or_default();
+        let desc = host.symbol_description(val.as_symbol_local_index()).unwrap_or_default();
         return Ok(format!("Symbol({desc})"));
     }
     // 步骤 3：ToString。装箱 Symbol 经 ToPrimitive 得 Symbol 本体，ToString 抛 TypeError。

crates/oxide_vm/src/vm/props.rs

@@ -4,26 +4,19 @@
 use oxide_runtime_api as coercion;
 
 use oxide_types::object::JsObject;
-use oxide_types::private_key::{
-    int_key_value, is_int_key, make_int_key, make_symbol_key, make_well_known_symbol_key, INT_KEY_COUNT,
-    WELL_KNOWN_SYMBOL_COUNT,
-};
+use oxide_types::private_key::{encode_symbol_key, int_key_value, is_int_key, make_int_key, INT_KEY_COUNT};
 use oxide_types::value::JsValue;
 
 use super::{canonical_index_of, canonical_index_units, Vm, MAX_PROTO_CHAIN_DEPTH};
 use crate::vm_trace;
 
-/// 把符号原语的下标编码为属性键：well-known 下标走保留键槽，用户下标加偏移，
-/// 两段键区间不重叠。
-fn symbol_value_key(idx: u32) -> u32 {
-    if idx < WELL_KNOWN_SYMBOL_COUNT {
-        make_well_known_symbol_key(idx)
-    } else {
-        make_symbol_key(idx)
-    }
+impl Vm {
+    /// 把符号原语的局部下标编码为属性键：经 realm 感知编码（realm 编号占高位、
+    /// 局部下标占低 20 位），realm 0 路径与旧编码逐字节一致。
+    fn symbol_value_key(&self, idx: u32) -> u32 {
+        encode_symbol_key(self.realm_id(), idx)
     }
 
-impl Vm {
     /// 把 `JsValue` 转为属性键 si（字符串 intern id，`u32`）。
     ///
     /// 非负小整数（含整值 double）直接编码到整数键区间，免 to_string + intern；
@@ -55,16 +48,16 @@ impl Vm {
             return Ok(self.string_key_units(&s.units()));
         }
         // Symbol 值直接编码为 Symbol 键（不进字符串 interner，键相互独立）；
-        // well-known 下标占保留槽，用户符号下标须加偏移，两段键区间不重叠。
+        // realm 编号占高位、局部下标占低 20 位，realm 0 与旧编码逐字节一致。
         if val.is_symbol() {
-            return Ok(symbol_value_key(val.as_symbol_index()));
+            return Ok(self.symbol_value_key(val.as_symbol_local_index()));
         }
         if val.is_object() {
             // ToPropertyKey：对象经 ToPrimitive(string hint)，结果为 Symbol 时直接作键；
             // 其余字符串按单元序列推导键（避免 lossy 文本桥接破坏孤立 surrogate 键）。
             let prim = coercion::to_primitive(val, coercion::ToPrimitiveHint::String, self)?;
             if prim.is_symbol() {
-                return Ok(symbol_value_key(prim.as_symbol_index()));
+                return Ok(self.symbol_value_key(prim.as_symbol_local_index()));
             }
             let units = oxide_runtime_api::to_units_full(prim, self)?;
             return Ok(self.string_key_units(&units));

crates/oxide_vm/src/vm_state.rs

@@ -90,27 +90,25 @@ impl GcState {
     }
 }
 
-/// Symbol 的 intern 状态。
+/// 每 realm 一份的 Symbol intern 状态。
 ///
-/// 符号下标 `0..WELL_KNOWN_SYMBOL_COUNT` 保留给 well-known symbol（描述取内建
-/// 名表），用户 `Symbol()`/`Symbol.for()` 的下标自此区间之后递增，
-/// `symbol_descriptions` 只存用户符号描述。
+/// 符号下标是 realm 内局部下标：`0..WELL_KNOWN_SYMBOL_COUNT` 保留给
+/// well-known symbol（描述取内建名表），用户 `Symbol()`/`Symbol.for()` 的
+/// 局部下标自此区间之后递增，`symbol_descriptions` 只存用户符号描述。
+/// 局部下标由描述槽数自然递增，每 realm 独立计数。
 pub(crate) struct SymbolState {
-    pub(crate) symbol_counter: u32,
     pub(crate) symbol_descriptions: Vec<Option<String>>,
     pub(crate) symbol_registry: HashMap<String, u32>,
 }
 
 impl SymbolState {
     pub(crate) fn reset(&mut self) {
-        self.symbol_counter = 0;
         self.symbol_descriptions.clear();
         self.symbol_registry.clear();
     }
 
     pub(crate) fn intern(&mut self, description: Option<String>) -> u32 {
-        self.symbol_counter = self.symbol_counter.wrapping_add(1);
-        // 用户符号下标顺延到 well-known 保留区间之后，与 well-known 下标空间不重叠。
+        // 用户符号局部下标顺延到 well-known 保留区间之后，与 well-known 下标空间不重叠。
         let idx = WELL_KNOWN_SYMBOL_COUNT + self.symbol_descriptions.len() as u32;
         self.symbol_descriptions.push(description);
         idx

crates/oxide_vm/src/vm_support.rs

@@ -96,7 +96,6 @@ impl Vm {
                     gc_pressure_mode: gc_pressure_mode_from_env(),
                 }),
                 symbols: RefCell::new(SymbolState {
-                    symbol_counter: 0,
                     symbol_descriptions: Vec::new(),
                     symbol_registry: std::collections::HashMap::new(),
                 }),
@@ -246,7 +245,6 @@ impl Vm {
                     gc_pressure_mode: gc_pressure_mode_from_env(),
                 }),
                 symbols: RefCell::new(SymbolState {
-                    symbol_counter: 0,
                     symbol_descriptions: Vec::new(),
                     symbol_registry: std::collections::HashMap::new(),
                 }),

crates/oxide_vm/src/vm_support/tests.rs

@@ -1112,7 +1112,6 @@ fn full_reset_clears_symbol_state() {
 
     vm.full_reset();
 
-    assert_eq!(vm.realm.symbols.borrow().symbol_counter, 0);
     assert!(vm.realm.symbols.borrow().symbol_descriptions.is_empty());
     assert!(vm.realm.symbols.borrow().symbol_registry.is_empty());
 }