Method doit

compiler/src/parser.rs:1617–1630

(expr: &Expr, res: &mut Vec<String>)

        return res.join(".");

        fn doit(expr: &Expr, res: &mut Vec<String>) -> Result<(), String> {
            match expr {
                Expr::Var { value, .. } => {
                    res.push(value.to_string());
                    Ok(())
                }
                Expr::FieldAccess { expr, field, .. } => {
                    doit(expr, res)?;
                    res.push(field.to_string());
                    Ok(())
                }
                _ => Err("unexpected expression".to_string()),
            }
        }
    }

    fn unary_operator(&self) -> Option<UnOp> {