core_foundation/
boolean.rs

1// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
2// file at the top-level directory of this distribution.
3//
4// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
5// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
7// option. This file may not be copied, modified, or distributed
8// except according to those terms.
9
10//! A Boolean type.
11
12pub use core_foundation_sys::number::{
13    kCFBooleanFalse, kCFBooleanTrue, CFBooleanGetTypeID, CFBooleanRef,
14};
15
16use crate::base::TCFType;
17
18declare_TCFType! {
19    /// A Boolean type.
20    ///
21    /// FIXME(pcwalton): Should be a newtype struct, but that fails due to a Rust compiler bug.
22    CFBoolean, CFBooleanRef
23}
24impl_TCFType!(CFBoolean, CFBooleanRef, CFBooleanGetTypeID);
25impl_CFTypeDescription!(CFBoolean);
26
27impl CFBoolean {
28    pub fn true_value() -> CFBoolean {
29        unsafe { TCFType::wrap_under_get_rule(kCFBooleanTrue) }
30    }
31
32    pub fn false_value() -> CFBoolean {
33        unsafe { TCFType::wrap_under_get_rule(kCFBooleanFalse) }
34    }
35}
36
37impl From<bool> for CFBoolean {
38    fn from(value: bool) -> CFBoolean {
39        if value {
40            CFBoolean::true_value()
41        } else {
42            CFBoolean::false_value()
43        }
44    }
45}
46
47impl From<CFBoolean> for bool {
48    fn from(value: CFBoolean) -> bool {
49        value.0 == unsafe { kCFBooleanTrue }
50    }
51}
52
53#[cfg(test)]
54mod tests {
55    use super::*;
56
57    #[test]
58    fn to_and_from_bool() {
59        let b_false = CFBoolean::from(false);
60        let b_true = CFBoolean::from(true);
61        assert_ne!(b_false, b_true);
62        assert_eq!(b_false, CFBoolean::false_value());
63        assert_eq!(b_true, CFBoolean::true_value());
64        assert!(!bool::from(b_false));
65        assert!(bool::from(b_true));
66    }
67}
core_foundation/boolean.rs

core_foundation/
boolean.rs
