{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
        let offset = if let Some(llindex) = bx.const_to_opt_uint(llindex) {
        let layout = self.layout.field(bx, 0);
            layout.size.checked_mul(llindex, bx).unwrap_or(layout.size)