Struct FfiSafeBytes

#[repr(C)]
pub struct FfiSafeBytes { /* private fields */ }

A helper struct for passing byte slices over the ABI boundary.

Implementations

impl FfiSafeBytes

pub fn len(self) -> usize

pub unsafe fn from_raw_parts(pointer: NonNull<u8>, len: usize) -> Self

pub fn into_raw_parts(self) -> (*mut u8, usize)

pub unsafe fn as_bytes<'a>(self) -> &'a [u8]

Converts self back to a borrowed string &[u8].

Safety

FfiSafeBytes can only be constructed from a valid rust byte slice, so you only need to make sure that the origial &[u8] outlives the lifetime 'a.

This should generally be true when borrowing strings owned by the current function and calling a function via FFI, but borrowing global data or data stored within a Rc for example is probably unsafe.

Trait Implementations

impl Clone for FfiSafeBytes

fn clone(&self) -> FfiSafeBytes

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FfiSafeBytes

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FfiSafeBytes

fn default() -> Self

Returns the “default value” for a type.

impl<'a> From<&'a [u8]> for FfiSafeBytes

fn from(value: &'a [u8]) -> Self

Converts to this type from the input type.

impl<'a> From<&'a str> for FfiSafeBytes

fn from(value: &'a str) -> Self

Converts to this type from the input type.

impl GetStaticEquivalent_ for FfiSafeBytes

type StaticEquivalent = _static_FfiSafeBytes

The 'static equivalent of Self

impl StableAbi for FfiSafeBytes

const LAYOUT: &'static TypeLayout

The layout of the type provided by implementors.

type IsNonZeroType = False

Whether this type has a single invalid bit-pattern.

const ABI_CONSTS: AbiConsts = _

const-equivalents of the associated types.

impl Copy for FfiSafeBytes