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
59
60
61
62
63
64
65
66
67
68
69
70
|
// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// 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.
//! A Boolean type.
pub use core_foundation_sys::number::{CFBooleanRef, CFBooleanGetTypeID, kCFBooleanTrue, kCFBooleanFalse};
use base::TCFType;
declare_TCFType!{
/// A Boolean type.
///
/// FIXME(pcwalton): Should be a newtype struct, but that fails due to a Rust compiler bug.
CFBoolean, CFBooleanRef
}
impl_TCFType!(CFBoolean, CFBooleanRef, CFBooleanGetTypeID);
impl_CFTypeDescription!(CFBoolean);
impl CFBoolean {
pub fn true_value() -> CFBoolean {
unsafe {
TCFType::wrap_under_get_rule(kCFBooleanTrue)
}
}
pub fn false_value() -> CFBoolean {
unsafe {
TCFType::wrap_under_get_rule(kCFBooleanFalse)
}
}
}
impl From<bool> for CFBoolean {
fn from(value: bool) -> CFBoolean {
if value {
CFBoolean::true_value()
} else {
CFBoolean::false_value()
}
}
}
impl From<CFBoolean> for bool {
fn from(value: CFBoolean) -> bool {
value.0 == unsafe { kCFBooleanTrue }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn to_and_from_bool() {
let b_false = CFBoolean::from(false);
let b_true = CFBoolean::from(true);
assert_ne!(b_false, b_true);
assert_eq!(b_false, CFBoolean::false_value());
assert_eq!(b_true, CFBoolean::true_value());
assert!(!bool::from(b_false));
assert!(bool::from(b_true));
}
}
|
