Struct NonNullRef

#[repr(transparent)]
pub struct NonNullRef<T>(pub NonNull<T>);

Tuple Fields

0: NonNull<T>

Implementations

impl<T> NonNullRef<T>

pub fn as_ptr(&self) -> *const T

pub fn cast<U>(self: NonNullRef<T>) -> NonNullRef<U>

Methods from Deref<Target = NonNull<T>>

pub unsafe fn as_ref<'a>(&self) -> &'a T

Returns a shared reference to the value. If the value may be uninitialized, as_uninit_ref must be used instead.

For the mutable counterpart see as_mut.

Safety

When calling this method, you have to ensure that the pointer is convertible to a reference.

Examples

use std::ptr::NonNull;

let mut x = 0u32;
let ptr = NonNull::new(&mut x as *mut _).expect("ptr is null!");

let ref_x = unsafe { ptr.as_ref() };
println!("{ref_x}");

Trait Implementations

impl<__> Clone for NonNullRef<__>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> Debug for NonNullRef<T>

fn fmt(self: &NonNullRef<T>, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T> Deref for NonNullRef<T>

type Target = NonNull<T>

The resulting type after dereferencing.

fn deref(self: &NonNullRef<T>) -> &NonNull<T>

Dereferences the value.

impl<'lt, T: 'lt> From<&'lt T> for NonNullRef<T>

fn from(it: &'lt T) -> NonNullRef<T>

Converts to this type from the input type.

impl<'lt, T: 'lt> From<&'lt mut T> for NonNullRef<T>

fn from(it: &'lt mut T) -> NonNullRef<T>

Converts to this type from the input type.

impl<T> From<NonNull<T>> for NonNullRef<T>

fn from(it: NonNull<T>) -> Self

Converts to this type from the input type.

impl<T: ReprC> ReprC for NonNullRef<T>

type CLayout = *const <T as ReprC>::CLayout

The CType having the same layout as Self.

fn is_valid(it: &*const T::CLayout) -> bool

Sanity checks that can be performed on an instance of the CType layout.

impl<__> Copy for NonNullRef<__>