| // Copyright 2012 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; |
| |
| struct S { |
| x: isize, |
| y: isize, |
| } |
| |
| type S2 = S; |
| |
| struct S3<U,V> { |
| x: U, |
| y: V |
| } |
| |
| type S4<U> = S3<U, char>; |
| |
| fn main() { |
| let s = S2 { |
| x: 1, |
| y: 2, |
| }; |
| match s { |
| S2 { |
| x: x, |
| y: y |
| } => { |
| assert_eq!(x, 1); |
| assert_eq!(y, 2); |
| } |
| } |
| // check that generics can be specified from the pattern |
| let s = S4 { |
| x: 4, |
| y: 'a' |
| }; |
| match s { |
| S4::<u8> { |
| x: x, |
| y: y |
| } => { |
| assert_eq!(x, 4); |
| assert_eq!(y, 'a'); |
| assert_eq!(mem::size_of_val(&x), 1); |
| } |
| }; |
| // check that generics can be specified from the constructor |
| let s = S4::<u16> { |
| x: 5, |
| y: 'b' |
| }; |
| match s { |
| S4 { |
| x: x, |
| y: y |
| } => { |
| assert_eq!(x, 5); |
| assert_eq!(y, 'b'); |
| assert_eq!(mem::size_of_val(&x), 2); |
| } |
| }; |
| } |