Trait CPtr

pub trait CPtr {
    type Target;

    // Required methods
    fn as_c_ptr(&self) -> *const Self::Target;
    fn as_mut_c_ptr(&mut self) -> *mut Self::Target;
}

A trait for producing pointers that will always be valid in C (assuming NULL pointer is a valid no-op).

Rust does not guarantee pointers to Zero Sized Types (https://doc.rust-lang.org/nomicon/exotic-sizes.html#zero-sized-types-zsts). In case the type is empty this trait will return a NULL pointer, which should be handled in C.

Required Associated Types

type Target

Required Methods

fn as_c_ptr(&self) -> *const Self::Target

fn as_mut_c_ptr(&mut self) -> *mut Self::Target

Implementations on Foreign Types

impl CPtr for [u8; 32]

type Target = u8

fn as_c_ptr(&self) -> *const Self::Target

fn as_mut_c_ptr(&mut self) -> *mut Self::Target

impl<T> CPtr for &[T]

type Target = T

fn as_c_ptr(&self) -> *const Self::Target

fn as_mut_c_ptr(&mut self) -> *mut Self::Target

impl<T> CPtr for [T]

type Target = T

fn as_c_ptr(&self) -> *const Self::Target

fn as_mut_c_ptr(&mut self) -> *mut Self::Target

impl<T: CPtr> CPtr for Option<T>

type Target = <T as CPtr>::Target

fn as_mut_c_ptr(&mut self) -> *mut Self::Target

fn as_c_ptr(&self) -> *const Self::Target

Implementors

impl CPtr for RecoverableSignature

Available on crate feature recovery only.

type Target = u8

impl CPtr for ElligatorSwift

type Target = u8

impl CPtr for Keypair

type Target = u8

impl CPtr for PublicKey

type Target = u8

impl CPtr for Signature

type Target = u8

impl CPtr for XOnlyPublicKey

type Target = u8