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fix: catch 参数支持解构 pattern（数组/对象/默认值）

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彭俊皓
2026-08-07 16:27:48 +08:00
parent 344a2a17e3
commit 38c569c1da
1 changed files with 4 additions and 5 deletions
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crates/oxide_emit/src/stmt/exception/try_catch.rs
+4 -5
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@@ -47,11 +47,10 @@ impl Emitter {
if let Some(catch) = &ts.handler {
ctx.push_scope();
if let Some(param) = &catch.param {
let catch_reg = ctx.alloc_reg();
if let oxide_parser::BindingPattern::BindingIdentifier(bi) = &param.pattern {
ctx.declare_initialized(bi.name.as_str(), catch_reg, VariableDeclarationKind::Let, false)?;
ctx.inst(Inst::new(OpCode::STORE_VAR, Operand::Reg(catch_reg), Operand::None, Operand::None));
}
let src_reg = ctx.alloc_reg();
// 异常值在 VM 物理 regs[0]（unwind 展开处写入），STORE_VAR a=None 读回。
ctx.inst(Inst::new(OpCode::STORE_VAR, Operand::Reg(src_reg), Operand::None, Operand::None));
self.emit_binding_pattern(&param.pattern, src_reg, VariableDeclarationKind::Let, false, ctx)?;
}
let mut last_catch_result: Option<u32> = None;
for s in &catch.body.body {