use core::marker::PhantomData;
use core::ops::{Deref, DerefMut};
pub struct PeripheralRef<'a, T> {
inner: T,
_lifetime: PhantomData<&'a mut T>,
}
impl<'a, T> PeripheralRef<'a, T> {
#[inline]
pub fn new(inner: T) -> Self {
Self {
inner,
_lifetime: PhantomData,
}
}
pub unsafe fn clone_unchecked(&mut self) -> PeripheralRef<'a, T>
where
T: Peripheral<P = T>,
{
PeripheralRef::new(self.inner.clone_unchecked())
}
pub fn reborrow(&mut self) -> PeripheralRef<'_, T>
where
T: Peripheral<P = T>,
{
PeripheralRef::new(unsafe { self.inner.clone_unchecked() })
}
#[inline]
pub fn map_into<U>(self) -> PeripheralRef<'a, U>
where
T: Into<U>,
{
PeripheralRef {
inner: self.inner.into(),
_lifetime: PhantomData,
}
}
}
impl<'a, T> Deref for PeripheralRef<'a, T> {
type Target = T;
#[inline]
fn deref(&self) -> &Self::Target {
&self.inner
}
}
impl<'a, T> DerefMut for PeripheralRef<'a, T> {
#[inline]
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.inner
}
}
pub trait Peripheral: Sized + sealed::Sealed {
type P;
unsafe fn clone_unchecked(&mut self) -> Self::P;
#[inline]
fn into_ref<'a>(mut self) -> PeripheralRef<'a, Self::P>
where
Self: 'a,
{
PeripheralRef::new(unsafe { self.clone_unchecked() })
}
}
impl<T: DerefMut> sealed::Sealed for T {}
impl<T: DerefMut> Peripheral for T
where
T::Target: Peripheral,
{
type P = <T::Target as Peripheral>::P;
#[inline]
unsafe fn clone_unchecked(&mut self) -> Self::P {
self.deref_mut().clone_unchecked()
}
}
pub(crate) mod sealed {
pub trait Sealed {}
}