44 lines
1.4 KiB
Rust
44 lines
1.4 KiB
Rust
use super::ValueId;
|
|
use crate::ast::ASTNode;
|
|
|
|
impl super::MirBuilder {
|
|
// QMarkPropagate: result?.value (Result-like)
|
|
pub(super) fn build_qmark_propagate_expression(
|
|
&mut self,
|
|
expression: ASTNode,
|
|
) -> Result<ValueId, String> {
|
|
let res_val = self.build_expression_impl(expression)?;
|
|
let ok_id = self.value_gen.next();
|
|
self.emit_instruction(super::MirInstruction::BoxCall {
|
|
dst: Some(ok_id),
|
|
box_val: res_val,
|
|
method: "isOk".to_string(),
|
|
args: vec![],
|
|
method_id: None,
|
|
effects: super::EffectMask::PURE,
|
|
})?;
|
|
let then_block = self.block_gen.next();
|
|
let else_block = self.block_gen.next();
|
|
self.emit_instruction(super::MirInstruction::Branch {
|
|
condition: ok_id,
|
|
then_bb: then_block,
|
|
else_bb: else_block,
|
|
})?;
|
|
self.start_new_block(then_block)?;
|
|
self.emit_instruction(super::MirInstruction::Return {
|
|
value: Some(res_val),
|
|
})?;
|
|
self.start_new_block(else_block)?;
|
|
let val_id = self.value_gen.next();
|
|
self.emit_instruction(super::MirInstruction::BoxCall {
|
|
dst: Some(val_id),
|
|
box_val: res_val,
|
|
method: "getValue".to_string(),
|
|
args: vec![],
|
|
method_id: None,
|
|
effects: super::EffectMask::PURE,
|
|
})?;
|
|
Ok(val_id)
|
|
}
|
|
}
|