20 lines
764 B
Rust
20 lines
764 B
Rust
//! Utils is a dumping ground for various methods that don't really have a particular module they
|
|
//! belong to. These are typically internal, and if you rely on them... well, don't be surprised if
|
|
//! they go away one day.
|
|
|
|
use std::rc::Rc;
|
|
use std::cell::RefCell;
|
|
|
|
use objc::runtime::Object;
|
|
|
|
/// Used for moving a pointer back into an Rc, so we can work with the object held behind it. Note
|
|
/// that it's very important to make sure you reverse this when you're done (using
|
|
/// `Rc::into_raw()`) otherwise you'll cause problems due to the `Drop` logic.
|
|
pub fn load<T>(this: &Object, ptr: &str) -> Rc<RefCell<T>> {
|
|
unsafe {
|
|
let ptr: usize = *this.get_ivar(ptr);
|
|
let view_ptr = ptr as *const RefCell<T>;
|
|
Rc::from_raw(view_ptr)
|
|
}
|
|
}
|