78 lines
1.4 KiB
Rust
78 lines
1.4 KiB
Rust
|
// Copyright 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.
|
||
|
|
|
||
|
|
static mut destructor_count: uint = 0;
|
||
|
|
|
||
|
|
trait Foo {
|
||
|
|
fn foo(self, x: int);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct S {
|
||
|
|
x: int,
|
||
|
|
y: int,
|
||
|
|
z: int,
|
||
|
|
s: String,
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Foo for S {
|
||
|
|
fn foo(self, x: int) {
|
||
|
|
assert!(self.x == 2);
|
||
|
|
assert!(self.y == 3);
|
||
|
|
assert!(self.z == 4);
|
||
|
|
assert!(self.s.as_slice() == "hello");
|
||
|
|
assert!(x == 5);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Drop for S {
|
||
|
|
fn drop(&mut self) {
|
||
|
|
println!("bye 1!");
|
||
|
|
unsafe {
|
||
|
|
destructor_count += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Foo for int {
|
||
|
|
fn foo(self, x: int) {
|
||
|
|
println!("{}", x * x);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn f() {
|
||
|
|
let s = S {
|
||
|
|
x: 2,
|
||
|
|
y: 3,
|
||
|
|
z: 4,
|
||
|
|
s: "hello".to_string(),
|
||
|
|
};
|
||
|
|
let st = box s as Box<Foo>;
|
||
|
|
st.foo(5);
|
||
|
|
println!("bye 2!");
|
||
|
|
}
|
||
|
|
|
||
|
|
fn g() {
|
||
|
|
let s = 2i;
|
||
|
|
let st = box s as Box<Foo>;
|
||
|
|
st.foo(3);
|
||
|
|
println!("bye 3!");
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
f();
|
||
|
|
|
||
|
|
unsafe {
|
||
|
|
assert!(destructor_count == 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
g();
|
||
|
|
}
|
||
|
|
|