third_party/rust/coreaudio-sys-utils/src/cf_mutable_dict.rs


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

use coreaudio_sys::*;
use std::os::raw::c_void;

pub struct CFMutableDictRef(CFMutableDictionaryRef);

impl CFMutableDictRef {
    pub fn add_value<K, V>(&self, key: *const K, value: *const V) {
        assert!(!self.0.is_null());
        unsafe {
            CFDictionaryAddValue(self.0, key as *const c_void, value as *const c_void);
        }
    }
}

impl Default for CFMutableDictRef {
    fn default() -> Self {
        let dict = unsafe {
            CFDictionaryCreateMutable(
                kCFAllocatorDefault,
                0,
                &kCFTypeDictionaryKeyCallBacks,
                &kCFTypeDictionaryValueCallBacks,
            )
        };
        assert!(!dict.is_null());
        Self(dict)
    }
}

impl Drop for CFMutableDictRef {
    fn drop(&mut self) {
        assert!(!self.0.is_null());
        unsafe {
            CFRelease(self.0 as *const c_void);
        }
    }
}