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fix: 顶层类声明绑定改为可变

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This commit is contained in:
彭俊皓
2026-09-17 21:52:34 +00:00
parent 816fdc3dd6
commit ed3e8cf372
3 changed files with 33 additions and 5 deletions
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crates/oxide_emit/src/prepass/declare.rs
+8 -5
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@@ -279,6 +279,10 @@ impl Emitter {
/// 建立 TDZ 占位）。使声明点之前的读取在编译期可分辨为 TDZ 而非隐式全局，
/// 声明点复用预登记槽位。
///
/// class 声明绑定外层形态是可变的（`let` 类），`C = null` 合法；类定义期
/// 类体（方法/构造器/访问器）对类名的引用由类自身注入的独立不可变绑定承载，
/// 不依赖此预声明标志。
///
/// # 边界与前提
/// - 只扫描直接子语句；不递归块/if/for/while/switch case/try 区（嵌套块与
/// switch CaseBlock 各自预声明；单语句 body 不接受 lexical 声明——lexical
@@ -307,7 +311,7 @@ impl Emitter {
if let Some(id) = &cd.id {
check_restricted_global_lexical(id.name.as_str(), global_lexical)?;
let reg = ctx.alloc_reg();
let _ = ctx.declare_predeclared(id.name.as_str(), reg, VariableDeclarationKind::Const, true);
let _ = ctx.declare_predeclared(id.name.as_str(), reg, VariableDeclarationKind::Let, false);
}
}
Statement::ExportNamedDeclaration(exp) => {
@@ -329,8 +333,8 @@ impl Emitter {
let _ = ctx.declare_predeclared(
id.name.as_str(),
reg,
VariableDeclarationKind::Const,
true,
VariableDeclarationKind::Let,
false,
);
}
}
@@ -343,8 +347,7 @@ impl Emitter {
if let Some(id) = &cd.id {
check_restricted_global_lexical(id.name.as_str(), global_lexical)?;
let reg = ctx.alloc_reg();
let _ =
ctx.declare_predeclared(id.name.as_str(), reg, VariableDeclarationKind::Const, true);
let _ = ctx.declare_predeclared(id.name.as_str(), reg, VariableDeclarationKind::Let, false);
}
}
ExportDefaultDeclarationKind::FunctionDeclaration(fd) => {