Convert Arc<Foo> to Arc<Bar> if Bar is a newtype wrapper of Foo

1

I would like to convert Arc<Foo> to Arc<Bar> where Bar is a newtype wrapper of Foo:

#[repr(transparent)]
struct Bar(Foo)

Is there any crate can achieve it?

I found ref-cast can convert &Foo to &Bar, so I guess it's possible to convert Arc<Foo> to Arc<Bar>

2

It looks like bytemuck has a function for this.

#[derive(bytemuck::TransparentWrapper)]
#[repr(transparent)]
struct Bar(Foo);

pub fn convert(foo: Arc<Foo>) -> Arc<Bar> {
    bytemuck::allocation::TransparentWrapperAlloc::wrap_arc(foo)
}
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