src/test/run-pass/class-poly-methods.rs

   1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11
  12
  13 struct cat<U> {
  14     info : Vec<U> ,
  15     meows : usize,
  16
  17     how_hungry : isize,
  18 }
  19
  20 impl<U> cat<U> {
  21     pub fn speak<T>(&mut self, stuff: Vec<T> ) {
  22         self.meows += stuff.len();
  23     }
  24     pub fn meow_count(&mut self) -> usize { self.meows }
  25 }
  26
  27 fn cat<U>(in_x : usize, in_y : isize, in_info: Vec<U> ) -> cat<U> {
  28     cat {
  29         meows: in_x,
  30         how_hungry: in_y,
  31         info: in_info
  32     }
  33 }
  34
  35 pub fn main() {
  36   let mut nyan : cat<isize> = cat::<isize>(52, 99, vec![9]);
  37   let mut kitty = cat(1000, 2, vec!["tabby".to_string()]);
  38   assert_eq!(nyan.how_hungry, 99);
  39   assert_eq!(kitty.how_hungry, 2);
  40   nyan.speak(vec![1,2,3]);
  41   assert_eq!(nyan.meow_count(), 55);
  42   kitty.speak(vec!["meow".to_string(), "mew".to_string(), "purr".to_string(), "chirp".to_string()]);
  43   assert_eq!(kitty.meow_count(), 1004);
  44 }