{"ast_node_type":"variable","tokens":[{"end":25,"kind":"keyword","start":0,"text":"let"}]}
        let eval_to_int =
        // Convert `AssertKind<Operand>` to `AssertKind<Scalar>`.
            |op| ecx.read_immediate(&ecx.eval_operand(op, None)?).map(|x| x.to_const_int());