Trait Context

pub unsafe trait Context: Sealed {
    const FLAGS: u32;
    const DESCRIPTION: &'static str;

    // Required method
    unsafe fn deallocate(ptr: *mut u8, size: usize);
}

A trait for all kinds of contexts that lets you define the exact flags and a function to deallocate memory. It isn’t possible to implement this for types outside this crate.

Required Associated Constants

const FLAGS: u32

Flags for the ffi.

const DESCRIPTION: &'static str

A constant description of the context.

Required Methods

unsafe fn deallocate(ptr: *mut u8, size: usize)

A function to deallocate the memory when the context is dropped.

Object Safety

This trait is not object safe.

Implementors

impl Context for All

const FLAGS: u32 = 769u32

const DESCRIPTION: &'static str = "all capabilities"

impl Context for SignOnly

const FLAGS: u32 = 513u32

const DESCRIPTION: &'static str = "signing only"

impl Context for VerifyOnly

const FLAGS: u32 = 257u32

const DESCRIPTION: &'static str = "verification only"

impl<'buf> Context for AllPreallocated<'buf>

const FLAGS: u32 = 769u32

const DESCRIPTION: &'static str = "all capabilities"

impl<'buf> Context for SignOnlyPreallocated<'buf>

const FLAGS: u32 = 513u32

const DESCRIPTION: &'static str = "signing only"

impl<'buf> Context for VerifyOnlyPreallocated<'buf>

const FLAGS: u32 = 257u32

const DESCRIPTION: &'static str = "verification only"