src/test/ui/run-pass/traits/trait-with-bounds-default.rs

   1 // Copyright 2013 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 // run-pass
  12
  13 pub trait Clone2 {
  14     /// Returns a copy of the value. The contents of boxes
  15     /// are copied to maintain uniqueness, while the contents of
  16     /// managed pointers are not copied.
  17     fn clone(&self) -> Self;
  18 }
  19
  20 trait Getter<T: Clone> {
  21     fn do_get(&self) -> T;
  22
  23     fn do_get2(&self) -> (T, T) {
  24         let x = self.do_get();
  25         (x.clone(), x.clone())
  26     }
  27
  28 }
  29
  30 impl Getter<isize> for isize {
  31     fn do_get(&self) -> isize { *self }
  32 }
  33
  34 impl<T: Clone> Getter<T> for Option<T> {
  35     fn do_get(&self) -> T { self.as_ref().unwrap().clone() }
  36 }
  37
  38
  39 pub fn main() {
  40     assert_eq!(3.do_get2(), (3, 3));
  41     assert_eq!(Some("hi".to_string()).do_get2(), ("hi".to_string(), "hi".to_string()));
  42 }