Enum Opaque
pub enum OpaqueAn opaque type which cannot be passed or held by value within Rust.
Rust's move semantics are such that every move is equivalent to a memcpy. This is incompatible in general with C++'s constructor-based move semantics, so a C++ type which has a destructor or nontrivial move constructor must never exist by value in Rust. In CXX, such types are called opaque C++ types.
When passed across an FFI boundary, an opaque C++ type must be behind an indirection such as a reference or UniquePtr.
Trait Implementations
impl Kind for Opaque
Auto Trait Implementations
impl Freeze for Opaque
impl RefUnwindSafe for Opaque
impl Send for Opaque
impl Sync for Opaque
impl Unpin for Opaque
impl UnsafeUnpin for Opaque
impl UnwindSafe for Opaque
Blanket Implementations
impl<T> Any for Opaque
where
T: 'static + ?Sized,
fn type_id(&self) -> TypeId
impl<T> Borrow<T> for Opaque
where
T: ?Sized,
fn borrow(&self) -> &T
impl<T> BorrowMut<T> for Opaque
where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
impl<T> From<T> for Opaque
fn from(t: T) -> TReturns the argument unchanged.
impl<T, U> Into<U> for Opaque
where
U: From<T>,
fn into(self) -> UCalls
U::from(self).That is, this conversion is whatever the implementation of
[From]<T> for Uchooses to do.
impl<T, U> TryFrom<U> for Opaque
where
U: Into<T>,
type Error = never;fn try_from(value: U) -> Result<T, never>
impl<T, U> TryInto<U> for Opaque
where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error;fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>