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1 | // Copyright 2012 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 | #![allow(non_camel_case_types)] | |
13 | ||
223e47cc | 14 | trait methods { |
1a4d82fc | 15 | fn to_bytes(&self) -> Vec<u8> ; |
223e47cc LB |
16 | } |
17 | ||
18 | impl methods for () { | |
1a4d82fc JJ |
19 | fn to_bytes(&self) -> Vec<u8> { |
20 | Vec::new() | |
223e47cc LB |
21 | } |
22 | } | |
23 | ||
24 | // the position of this function is significant! - if it comes before methods | |
970d7e83 | 25 | // then it works, if it comes after it then it doesn't! |
1a4d82fc | 26 | fn to_bools(bitv: Storage) -> Vec<bool> { |
c34b1796 | 27 | (0..8).map(|i| { |
223e47cc LB |
28 | let w = i / 64; |
29 | let b = i % 64; | |
c34b1796 AL |
30 | let x = 1 & (bitv.storage[w] >> b); |
31 | x == 1 | |
1a4d82fc | 32 | }).collect() |
223e47cc LB |
33 | } |
34 | ||
1a4d82fc | 35 | struct Storage { storage: Vec<u64> } |
223e47cc LB |
36 | |
37 | pub fn main() { | |
c30ab7b3 SL |
38 | let bools = vec![false, false, true, false, false, true, true, false]; |
39 | let bools2 = to_bools(Storage{storage: vec![0b01100100]}); | |
223e47cc | 40 | |
c34b1796 | 41 | for i in 0..8 { |
1a4d82fc | 42 | println!("{} => {} vs {}", i, bools[i], bools2[i]); |
223e47cc LB |
43 | } |
44 | ||
970d7e83 | 45 | assert_eq!(bools, bools2); |
223e47cc | 46 | } |