Documentation

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Steven Fackler 2016-10-31 20:59:38 -07:00
parent 96a77cf5a8
commit ab30ad0ce7
1 changed files with 13 additions and 0 deletions

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//! Items used by other types.
use std::cell::UnsafeCell;
use std::marker::PhantomData;
/// A type implemented by wrappers over OpenSSL types.
///
/// This should not be implemented by anything outside of this crate; new methods may be added at
/// any time.
pub unsafe trait OpenSslType {
/// The raw C type.
type CType;
/// Constructs an instance of this type from its raw type.
unsafe fn from_ptr(ptr: *mut Self::CType) -> Self;
/// Returns a pointer to its raw type.
fn as_ptr(&self) -> *mut Self::CType;
}
/// A reference to an OpenSSL type.
pub struct Ref<T>(UnsafeCell<()>, PhantomData<T>);
impl<T: OpenSslType> Ref<T> {
/// Constructs a shared reference to this type from its raw type.
pub unsafe fn from_ptr<'a>(ptr: *mut T::CType) -> &'a Ref<T> {
&*(ptr as *mut _)
}
/// Constructs a mutable reference to this type from its raw type.
pub unsafe fn from_ptr_mut<'a>(ptr: *mut T::CType) -> &'a mut Ref<T> {
&mut *(ptr as *mut _)
}
/// Returns a pointer to its raw type.
pub fn as_ptr(&self) -> *mut T::CType {
self as *const _ as *mut _
}