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

   1 use coreaudio_sys::*;
   2 use std::os::raw::c_void;
   3
   4 pub struct CFMutableDictRef(CFMutableDictionaryRef);
   5
   6 impl CFMutableDictRef {
   7     pub fn add_value<K, V>(&self, key: *const K, value: *const V) {
   8         assert!(!self.0.is_null());
   9         unsafe {
  10             CFDictionaryAddValue(self.0, key as *const c_void, value as *const c_void);
  11         }
  12     }
  13 }
  14
  15 impl Default for CFMutableDictRef {
  16     fn default() -> Self {
  17         let dict = unsafe {
  18             CFDictionaryCreateMutable(
  19                 kCFAllocatorDefault,
  20                 0,
  21                 &kCFTypeDictionaryKeyCallBacks,
  22                 &kCFTypeDictionaryValueCallBacks,
  23             )
  24         };
  25         assert!(!dict.is_null());
  26         Self(dict)
  27     }
  28 }
  29
  30 impl Drop for CFMutableDictRef {
  31     fn drop(&mut self) {
  32         assert!(!self.0.is_null());
  33         unsafe {
  34             CFRelease(self.0 as *const c_void);
  35         }
  36     }
  37 }