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// Copyright 2012-2014 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.
// ignore-fast
trait noisy {
fn speak(&mut self);
}
#[deriving(Clone)]
struct cat {
meows : uint,
how_hungry : int,
name : ~str,
}
impl cat {
fn meow(&mut self) {
error!("Meow");
self.meows += 1u;
if self.meows % 5u == 0u {
self.how_hungry += 1;
}
}
}
impl cat {
pub fn eat(&mut self) -> bool {
if self.how_hungry > 0 {
error!("OM NOM NOM");
self.how_hungry -= 2;
return true;
} else {
error!("Not hungry!");
return false;
}
}
}
impl noisy for cat {
fn speak(&mut self) { self.meow(); }
}
fn cat(in_x : uint, in_y : int, in_name: ~str) -> cat {
cat {
meows: in_x,
how_hungry: in_y,
name: in_name.clone()
}
}
fn make_speak<C:noisy>(mut c: C) {
c.speak();
}
pub fn main() {
let mut nyan = cat(0u, 2, ~"nyan");
nyan.eat();
assert!((!nyan.eat()));
for _ in range(1u, 10u) {
make_speak(nyan.clone());
}
}
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