]>
Commit | Line | Data |
---|---|---|
2c00a5a8 XL |
1 | // Copyright 2017 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 | ||
b7449926 XL |
11 | // run-pass |
12 | ||
0531ce1d | 13 | #![feature(generators, generator_trait)] |
2c00a5a8 XL |
14 | |
15 | use std::ops::{ Generator, GeneratorState }; | |
16 | ||
17 | fn foo(_: &str) -> String { | |
18 | String::new() | |
19 | } | |
20 | ||
21 | fn bar(baz: String) -> impl Generator<Yield = String, Return = ()> { | |
22 | move || { | |
23 | yield foo(&baz); | |
24 | } | |
25 | } | |
26 | ||
27 | fn foo2(_: &str) -> Result<String, ()> { | |
28 | Err(()) | |
29 | } | |
30 | ||
31 | fn bar2(baz: String) -> impl Generator<Yield = String, Return = ()> { | |
32 | move || { | |
33 | if let Ok(quux) = foo2(&baz) { | |
34 | yield quux; | |
35 | } | |
36 | } | |
37 | } | |
38 | ||
39 | fn main() { | |
0531ce1d XL |
40 | unsafe { |
41 | assert_eq!(bar(String::new()).resume(), GeneratorState::Yielded(String::new())); | |
42 | assert_eq!(bar2(String::new()).resume(), GeneratorState::Complete(())); | |
43 | } | |
2c00a5a8 | 44 | } |