blob: ff867e76810a6876c4d3a512d59c2b3cc0a40fda (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
// 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.
// Test using overloaded indexing when the "map" is stored in a
// field. This caused problems at some point.
#![feature(core)]
use std::ops::Index;
struct Foo {
x: isize,
y: isize,
}
struct Bar {
foo: Foo
}
impl Index<isize> for Foo {
type Output = isize;
fn index(&self, z: isize) -> &isize {
if z == 0 {
&self.x
} else {
&self.y
}
}
}
trait Int {
fn get(self) -> isize;
fn get_from_ref(&self) -> isize;
fn inc(&mut self);
}
impl Int for isize {
fn get(self) -> isize { self }
fn get_from_ref(&self) -> isize { *self }
fn inc(&mut self) { *self += 1; }
}
fn main() {
let f = Bar { foo: Foo {
x: 1,
y: 2,
} };
assert_eq!(f.foo[1].get(), 2);
}
|
