| // 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)); |
| } |
| } |