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use core::cell::UnsafeCell;
use core::mem::MaybeUninit;
use core::ptr;
pub(crate) struct UninitCell<T>(MaybeUninit<UnsafeCell<T>>);
impl<T> UninitCell<T> {
pub const fn uninit() -> Self {
Self(MaybeUninit::uninit())
}
pub unsafe fn as_mut_ptr(&self) -> *mut T {
(*self.0.as_ptr()).get()
}
#[allow(clippy::mut_from_ref)]
pub unsafe fn as_mut(&self) -> &mut T {
&mut *self.as_mut_ptr()
}
pub unsafe fn write(&self, val: T) {
ptr::write(self.as_mut_ptr(), val)
}
pub unsafe fn drop_in_place(&self) {
ptr::drop_in_place(self.as_mut_ptr())
}
}
impl<T: Copy> UninitCell<T> {
pub unsafe fn read(&self) -> T {
ptr::read(self.as_mut_ptr())
}
}
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