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refactor: 原子切换 emit 产出符号化 IR

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彭俊皓
2026-08-05 17:52:42 +08:00
parent ef3cd65eb6
commit f34f791b9a
38 changed files with 720 additions and 866 deletions
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crates/oxide_compiler/src/stmt/exception/try_catch.rs
+19 -20
View File
@@ -1,5 +1,7 @@
use crate::compiler::{CompileCtx, Compiler, Label};
use oxide_bytecode::opcode::{self, OpCode};
use crate::compiler::{CompileCtx, Compiler};
use crate::ir::inst::Inst;
use crate::ir::operand::Operand;
use oxide_bytecode::opcode::OpCode;
use oxide_parser::{Statement, VariableDeclarationKind};
impl Compiler {
@@ -7,18 +9,17 @@ impl Compiler {
let Statement::TryStatement(ts) = stmt else {
return Ok(None);
};
let id = ctx.next_label_id();
let catch_label = Label::CatchBody(id);
let finally_label = Label::FinallyBody(id);
let try_end_label = Label::TryEnd(id);
let catch_label = ctx.next_label_id();
let finally_label = ctx.next_label_id();
let try_end_label = ctx.next_label_id();
let has_catch = ts.handler.is_some();
let has_finally = ts.finalizer.is_some();
let result_reg = ctx.alloc_reg();
if has_finally {
ctx.emit_try_finally_begin_labeled(finally_label);
ctx.inst(Inst::try_finally_begin(finally_label));
}
if has_catch {
ctx.emit_try_begin_labeled(catch_label);
ctx.inst(Inst::try_begin(catch_label));
}
let mut last_try_result: Option<u8> = None;
for s in &ts.block.body {
@@ -26,24 +27,23 @@ impl Compiler {
last_try_result = Some(r);
}
}
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, last_try_result.unwrap_or(result_reg), 0));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg as u32), Operand::Reg(last_try_result.unwrap_or(result_reg) as u32), Operand::None));
if has_catch {
ctx.emit(opcode::encode(OpCode::TRY_END, 0, 0, 0));
ctx.inst(Inst::new(OpCode::TRY_END, Operand::None, Operand::None, Operand::None));
}
let jmp_needed = has_catch || has_finally;
if jmp_needed {
let target = if has_finally { finally_label } else { try_end_label };
ctx.emit_jmp_labeled(target);
ctx.inst(Inst::jmp(target));
}
let catch_label_pc = ctx.bytecode.len();
ctx.labels.label_map.insert(catch_label, catch_label_pc);
ctx.labels.set_label_pos(catch_label, ctx.insts.len());
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.emit(opcode::encode(OpCode::STORE_VAR, catch_reg, 0, 0));
ctx.inst(Inst::new(OpCode::STORE_VAR, Operand::Reg(catch_reg as u32), Operand::None, Operand::None));
}
}
let mut last_catch_result: Option<u8> = None;
@@ -52,22 +52,21 @@ impl Compiler {
last_catch_result = Some(r);
}
}
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, last_catch_result.unwrap_or(result_reg), 0));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg as u32), Operand::Reg(last_catch_result.unwrap_or(result_reg) as u32), Operand::None));
ctx.pop_scope();
}
if has_finally {
ctx.labels.label_map.insert(finally_label, ctx.bytecode.len());
ctx.labels.set_label_pos(finally_label, ctx.insts.len());
let mut last_finally_result: Option<u8> = None;
for s in &ts.finalizer.as_ref().unwrap().body {
if let Some(r) = self.emit_statement(s, ctx)? {
last_finally_result = Some(r);
}
}
ctx.emit(opcode::encode(OpCode::LOAD_VAR, result_reg, last_finally_result.unwrap_or(result_reg), 0));
ctx.emit(opcode::encode(OpCode::TRY_FINALLY_END, 0, 0, 0));
ctx.inst(Inst::new(OpCode::LOAD_VAR, Operand::Reg(result_reg as u32), Operand::Reg(last_finally_result.unwrap_or(result_reg) as u32), Operand::None));
ctx.inst(Inst::new(OpCode::TRY_FINALLY_END, Operand::None, Operand::None, Operand::None));
}
let try_end_pc = ctx.bytecode.len();
ctx.labels.label_map.insert(try_end_label, try_end_pc);
ctx.labels.set_label_pos(try_end_label, ctx.insts.len());
Ok(Some(result_reg))
}
}