Struct OpaqueConst 

pub struct OpaqueConst<'mem>(/* private fields */);

A type-erased read-only pointer to an initialized value.

Cannot be null. May be dangling (for ZSTs)

Implementations

impl<'mem> OpaqueConst<'mem>

pub fn from_ref<T>(r: &'mem T) -> OpaqueConst<'mem>

Create a new opaque const pointer from a reference

pub unsafe fn new_unchecked<T>(ptr: *const T) -> OpaqueConst<'mem>

Create a new opaque const pointer from a raw pointer

Safety

The pointer must be valid, aligned, and point to initialized memory of the correct type, and be valid for lifetime 'mem.

pub fn as_byte_ptr(self) -> *const u8

Gets the underlying raw pointer as a byte pointer

pub unsafe fn as_ptr<T>(self) -> *const T

Gets the underlying raw pointer as a pointer of type T

Safety

Must be called with the original type T that was used to create this pointer

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

where 'borrow: 'mem,

Gets the underlying raw pointer as a const pointer of type T

Safety

T must be the actual underlying type. You’re downcasting with no guardrails.

pub unsafe fn field(self, offset: usize) -> OpaqueConst<'mem>

Returns a pointer with the given offset added

Safety

Offset must be within the bounds of the allocated memory, and the resulting pointer must be properly aligned.

pub unsafe fn read<T>(self) -> T

Exposes core::ptr::read

Safety

T must be the actual underlying type of the pointed-to memory. The memory must be properly initialized and aligned for type T.

Trait Implementations

impl<'mem> Clone for OpaqueConst<'mem>

fn clone(&self) -> OpaqueConst<'mem>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'mem> Copy for OpaqueConst<'mem>