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#![no_std] pub mod alloc; pub mod boxed; pub mod raw_vec; pub use alloc::*; pub use boxed::*; pub use raw_vec::*; use core::ptr::NonNull; /// Casting extensions to the `NonNull` type /// /// This trait adds the [cast] and [as_opaque] methods to the `NonNull` type. /// As of writing, [as_opaque] is still unstable, and [cast] only available /// starting from rust 1.27. /// /// Due to the conflict in name of the methods and to [PR #48552] not being /// merged until rust 1.26, they are suffixed with an underscore. /// /// [cast]: https://doc.rust-lang.org/nightly/core/ptr/struct.NonNull.html#method.cast /// [as_opaque]: https://doc.rust-lang.org/nightly/core/ptr/struct.NonNull.html#method.as_opaque /// [PR #48552]: https://github.com/rust-lang/rust/pull/48552 pub trait NonNullCast { fn cast_<U>(self) -> NonNull<U>; fn as_opaque_(self) -> NonNull<Opaque>; } impl<T: ?Sized> NonNullCast for NonNull<T> { fn cast_<U>(self) -> NonNull<U> { unsafe { NonNull::new_unchecked(self.as_ptr() as *mut U) } } fn as_opaque_(self) -> NonNull<Opaque> { self.cast_() } }