feat: 捕获 cell 换键——类合成 cell 切计数器分配，类名与函数声明改可见绑定索引

Cargo.lock

@@ -1095,7 +1095,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_builtins"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "chrono",
  "fast-float",
@@ -1120,7 +1120,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_bytecode"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "num-bigint",
  "oxide_log",
@@ -1128,7 +1128,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cfg"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxide_bytecode",
  "oxide_emit",
@@ -1139,7 +1139,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cli"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "ansi_term",
  "bumpalo",
@@ -1159,7 +1159,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_code_cache"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "lru",
  "oxide_bytecode",
@@ -1168,7 +1168,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_compiler"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1187,7 +1187,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_dce"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1201,7 +1201,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_emit"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "num-bigint",
  "oxc_allocator",
@@ -1216,7 +1216,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_ir"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxide_bytecode",
  "oxide_log",
@@ -1225,7 +1225,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_kernel"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1240,7 +1240,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_liveness"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1252,7 +1252,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_log"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "tracing",
  "tracing-appender",
@@ -1261,7 +1261,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_parser"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxc_allocator",
  "oxc_ast",
@@ -1276,7 +1276,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_regalloc"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1292,7 +1292,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_runtime_api"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1304,7 +1304,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_test262"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1321,7 +1321,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_types"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "bumpalo",
  "hashbrown 0.14.5",
@@ -1333,7 +1333,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_vm"
-version = "0.8.9"
+version = "0.8.10"
 dependencies = [
  "bumpalo",
  "chrono",

Cargo.toml

@@ -22,7 +22,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.8.9"
+version = "0.8.10"
 edition = "2021"
 license = "MIT"
 rust-version = "1.80"

crates/oxide_emit/src/class/emit.rs

@@ -138,7 +138,7 @@ impl Emitter {
         // （会改写 cell 值）与内联 accessor 调用（会清空寄存器文件）之后仍保持 identity
         // 一致；合成键 @@class_self_N 不影响外层作用域的同名用户绑定。
         let class_self_cell: Option<u8> = ctor_name.as_deref().map(|_| {
-            let cell_idx = ctx.captured_bindings.values().copied().max().map_or(0, |m| m.saturating_add(1));
+            let cell_idx = ctx.alloc_cell_idx();
             ctx.captured_bindings.insert(format!("@@class_self_{cell_idx}"), cell_idx);
             cell_idx
         });
@@ -167,13 +167,14 @@ impl Emitter {
         ctx.scopes.private_brand_id = private_brand_id;
 
         // 实例公有字段 computed key 求值于构造器帧外，须类定义期存入数组。构造器以
-        // upvalue 捕获该数组：父作用域登记 `@@field_keys`（cell_idx 取现有最大 +1）。
+        // upvalue 捕获该数组：父作用域登记 `@@field_keys`（索引经共享计数器追加，
+        // 与块级遮蔽绑定的追加索引不碰撞）。
         let has_computed_instance = instance_field_indices.iter().any(|&i| {
             let ClassElement::PropertyDefinition(p) = &elements[i] else { return false };
             p.computed && !matches!(p.key, PropertyKey::PrivateIdentifier(_))
         });
         let field_key_cell: Option<u8> = if has_computed_instance {
-            let cell_idx = ctx.captured_bindings.values().copied().max().map_or(0, |m| m.saturating_add(1));
+            let cell_idx = ctx.alloc_cell_idx();
             ctx.captured_bindings.insert("@@field_keys".to_string(), cell_idx);
             Some(cell_idx)
         } else {
@@ -181,7 +182,7 @@ impl Emitter {
         };
         // 类 brand 对象（= proto）由类定义期 MAKE_CELL 写入，构造器经 upvalue 捕获。
         let brand_cell: Option<u8> = private_brand_id.map(|_| {
-            let cell_idx = ctx.captured_bindings.values().copied().max().map_or(0, |m| m.saturating_add(1));
+            let cell_idx = ctx.alloc_cell_idx();
             ctx.captured_bindings.insert("@@class_brand".to_string(), cell_idx);
             cell_idx
         });
@@ -419,11 +420,11 @@ impl Emitter {
             }
             // 类名被外层嵌套函数捕获时，真实名 cell 同样须初始化（类元素自引用走
             // @@class_self_* 合成 cell，二者 cell_idx 不同则各发一次）。
-            // 仅类声明：类名是本作用域绑定，captured_bindings 按名命中的才是
+            // 仅类声明：类名是本作用域绑定，可见绑定解析到的是它的 cell；类表达式
-            // 它的 cell；类表达式名是类体内独立 const 绑定，按名查询只会命中
+            // 名是类体内独立 const 绑定，按名解析只会命中外层同名绑定 cell，
-            // 外层同名绑定 cell，MAKE_CELL 会把类值误写进外层绑定。
+            // MAKE_CELL 会把类值误写进外层绑定。
             if is_class_decl {
-                if let Some(&cell_idx) = ctx.captured_bindings.get(name) {
+                if let Some((cell_idx, _)) = ctx.visible_cell(name) {
                     ctx.inst(Inst::new(
                         OpCode::MAKE_CELL,
                         Operand::Reg(binding_reg),

crates/oxide_emit/src/stmt/declaration/function_decl.rs

@@ -164,7 +164,7 @@ impl Emitter {
         ctx.nested.push(sub_module);
         ctx.inst(Inst::create_closure(Operand::Reg(reg), ctx.nested.len() as u16));
         if write_slot {
-            if let Some(&cell_idx) = ctx.captured_bindings.get(name) {
+            if let Some((cell_idx, _)) = ctx.visible_cell(name) {
                 ctx.inst(Inst::new(
                     OpCode::MAKE_CELL,
                     Operand::Reg(reg),