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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/iteration/while_loop.rs
+8 -8
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@@ -1,4 +1,5 @@
use crate::compiler::{CompileCtx, Compiler, Label};
use crate::compiler::{CompileCtx, Compiler};
use crate::ir::inst::Inst;
use oxide_parser::Statement;
impl Compiler {
@@ -6,17 +7,16 @@ impl Compiler {
let Statement::WhileStatement(wh) = stmt else {
return Ok(None);
};
let id = ctx.next_label_id();
let start_label = Label::WhileStart(id);
let end_label = Label::WhileEnd(id);
ctx.labels.label_map.insert(start_label, ctx.bytecode.len());
let start_label = ctx.next_label_id();
let end_label = ctx.next_label_id();
ctx.labels.set_label_pos(start_label, ctx.insts.len());
ctx.push_loop(end_label, start_label);
let n_labeled = ctx.take_pending_loop_labels(end_label, start_label);
let test_reg = self.emit_expression(&wh.test, ctx)?;
ctx.emit_jmp_if_false_labeled(test_reg, end_label);
ctx.inst(Inst::jmp_if_false(test_reg, end_label));
self.emit_statement(&wh.body, ctx)?;
ctx.emit_jmp_labeled(start_label);
ctx.labels.label_map.insert(end_label, ctx.bytecode.len());
ctx.inst(Inst::jmp(start_label));
ctx.labels.set_label_pos(end_label, ctx.insts.len());
ctx.pop_label_scopes(n_labeled);
ctx.pop_loop();
Ok(None)