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interpreter: add for loop

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This commit is contained in:
yor1xd
2026-05-26 09:06:50 +02:00
committed by Guillem L. Jara
parent ca49529a46
commit 314a6cc46f
1 changed files with 29 additions and 0 deletions
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interpreter/src/ir/lower.rs
+29
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@@ -90,6 +90,35 @@ impl<'a> Code<'a> {
));
self.free_reg(condition);
}
Statement::For { init, condition, update, body } => {
if let Some(SimpleStatement::Expression(expr)) = init {
let reg = self.lower_expr(expr, ValueContext::Untyped);
self.free_reg(reg);
}
let cond_label = self.following_instr(0);
if let Some(condition) = condition {
let condition = self.lower_expr(condition, ValueContext::Scalar);
let body_label = self.following_instr(1);
let while_label =
self.bc
.emit(Instruction::branch(condition.reg(), body_label, Label(0)));
self.free_reg(condition);
self.lower_body(body);
if let Some(SimpleStatement::Expression(expr)) = update {
let reg = self.lower_expr(expr, ValueContext::Untyped);
self.free_reg(reg);
}
self.bc.emit(Instruction::jump(cond_label));
self.bc.nth(while_label).args.branch.2 = self.following_instr(0);
} else {
self.lower_body(body);
if let Some(SimpleStatement::Expression(expr)) = update {
let reg = self.lower_expr(expr, ValueContext::Untyped);
self.free_reg(reg);
}
self.bc.emit(Instruction::jump(cond_label));
}
}
Statement::Simple(SimpleStatement::Expression(expr)) => {
let reg = self.lower_expr(expr, ValueContext::Untyped);
self.free_reg(reg);