| // Copyright 2013 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| use std::mem::size_of; |
| |
| #[derive(PartialEq, Debug)] |
| enum Either<T, U> { Left(T), Right(U) } |
| |
| macro_rules! check { |
| ($t:ty, $sz:expr, $($e:expr, $s:expr),*) => {{ |
| assert_eq!(size_of::<$t>(), $sz); |
| $({ |
| static S: $t = $e; |
| let v: $t = $e; |
| assert_eq!(S, v); |
| assert_eq!(format!("{:?}", v), $s); |
| assert_eq!(format!("{:?}", S), $s); |
| });* |
| }} |
| } |
| |
| pub fn main() { |
| check!(Option<u8>, 2, |
| None, "None", |
| Some(129), "Some(129)"); |
| check!(Option<i16>, 4, |
| None, "None", |
| Some(-20000), "Some(-20000)"); |
| check!(Either<u8, i8>, 2, |
| Either::Left(132), "Left(132)", |
| Either::Right(-32), "Right(-32)"); |
| check!(Either<u8, i16>, 4, |
| Either::Left(132), "Left(132)", |
| Either::Right(-20000), "Right(-20000)"); |
| } |
