{"ast_node_type":"variable","tokens":[{"end":83,"kind":"keyword","start":0,"text":"let"}]}
                let left = self.read_immediate(&self.eval_operand(left, layout)?)?;
                let layout = util::binop_left_homogeneous(bin_op).then_some(dest.layout);
                let layout = util::binop_right_homogeneous(bin_op).then_some(left.layout);