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use std::ptr;
use std::rc::Rc;
use std::sync::Arc;
pub trait Unbox {
type Target;
fn unbox(self) -> Self::Target;
}
impl<T> Unbox for Box<T>
where T: Sized
{
type Target = T;
fn unbox(self) -> T {
unsafe { ptr::read(Box::into_raw(self)) }
}
}
impl<T> Unbox for Rc<T>
where T: Clone
{
type Target = T;
fn unbox(mut self) -> T {
Rc::make_mut(&mut self);
match Rc::try_unwrap(self) {
Ok(inner) => inner,
_ => unreachable!(),
}
}
}
impl<T> Unbox for Arc<T>
where T: Clone
{
type Target = T;
fn unbox(mut self) -> T {
Arc::make_mut(&mut self);
match Arc::try_unwrap(self) {
Ok(inner) => inner,
_ => unreachable!(),
}
}
}