Trait PointerWrapper

pub unsafe trait PointerWrapper<N>: Sized {
    // Required methods
    fn wrap(ptr: *mut N) -> Option<Self>;
    fn unwrap(self) -> *mut N;
    fn inner(&self) -> &N;
    fn inner_mut(&mut self) -> &mut N;
}

This trait supports the conversion of a wrapper into it’s wrapped C/C++ pointer and back.

The wrapped value can be accessed through the functions inner and inner_mut.

Safety

The native value N should be treated as opaque, because its definition may change without adhering to semantic versioning and depends on what the tool bindgen is able to generate.

Converting from a Rust wrapper to the wrapped value loses the automatic ability to free associated resources.

Required Methods

fn wrap(ptr: *mut N) -> Option<Self>

Wraps a native pointer into a wrapper type. Returns None if the pointer is null.

fn unwrap(self) -> *mut N

Unwraps the wrapper type into the native pointer.

fn inner(&self) -> &N

Access the wrapped pointer.

fn inner_mut(&mut self) -> &mut N

Access the wrapped pointer.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<N> PointerWrapper<N> for RCHandle<N>

where N: NativeRefCounted,

impl<N> PointerWrapper<N> for RefHandle<N>

where N: NativeDrop,