| // 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. |
| |
| //! An immutable bag of elements. |
| |
| pub use core_foundation_sys::set::*; |
| use core_foundation_sys::base::{CFTypeRef, CFRelease, kCFAllocatorDefault}; |
| |
| use base::{CFIndexConvertible, TCFType}; |
| |
| use std::mem; |
| use std::os::raw::c_void; |
| use std::marker::PhantomData; |
| |
| /// An immutable bag of elements. |
| pub struct CFSet<T = *const c_void>(CFSetRef, PhantomData<T>); |
| |
| impl<T> Drop for CFSet<T> { |
| fn drop(&mut self) { |
| unsafe { CFRelease(self.as_CFTypeRef()) } |
| } |
| } |
| |
| impl_TCFType!(CFSet<T>, CFSetRef, CFSetGetTypeID); |
| impl_CFTypeDescription!(CFSet); |
| |
| impl CFSet { |
| /// Creates a new set from a list of `CFType` instances. |
| pub fn from_slice<T>(elems: &[T]) -> CFSet<T> where T: TCFType { |
| unsafe { |
| let elems: Vec<CFTypeRef> = elems.iter().map(|elem| elem.as_CFTypeRef()).collect(); |
| let set_ref = CFSetCreate(kCFAllocatorDefault, |
| mem::transmute(elems.as_ptr()), |
| elems.len().to_CFIndex(), |
| &kCFTypeSetCallBacks); |
| TCFType::wrap_under_create_rule(set_ref) |
| } |
| } |
| } |