Trait HasVPtr 

pub unsafe trait HasVPtr<Trait: ?Sized> {
    // Required methods
    fn init() -> &'static VTableData;
    fn get_vptr(&self) -> &VPtr<Self, Trait>
       where Self: Sized;
    fn get_vptr_mut(&mut self) -> &mut VPtr<Self, Trait>
       where Self: Sized;

    // Provided methods
    fn as_thin_ref(&self) -> ThinRef<'_, Trait>
       where Self: Sized { ... }
    fn as_thin_ref_mut(&mut self) -> ThinRefMut<'_, Trait>
       where Self: Sized { ... }
    fn as_pin_thin_ref(self: Pin<&Self>) -> Pin<ThinRef<'_, Trait>>
       where Self: Sized { ... }
    fn as_pin_thin_ref_mut(self: Pin<&mut Self>) -> Pin<ThinRefMut<'_, Trait>>
       where Self: Sized { ... }
}

This trait indicate that the type has a VPtr field to the trait Trait

You should not implement this trait yourself, it is implemented by the vptr macro

Safety: For this to work correctly, the init() function must return a reference to a VTableData with valid content (the offset and vtable pointer need to be correct for this type) and get_vptr must return a reference of a field withi &self. The `#vptr macro does the right thing

Required Methods

fn init() -> &'static VTableData

Initialize a VTableData suitable to initialize the VPtr within Self

fn get_vptr(&self) -> &VPtr<Self, Trait>

where Self: Sized,

return the a reference of the VPtr within Self

fn get_vptr_mut(&mut self) -> &mut VPtr<Self, Trait>

where Self: Sized,

return the a reference of the VPtr within Self

Provided Methods

fn as_thin_ref(&self) -> ThinRef<'_, Trait>

where Self: Sized,

return a thin reference to self

fn as_thin_ref_mut(&mut self) -> ThinRefMut<'_, Trait>

where Self: Sized,

return a thin reference to self

fn as_pin_thin_ref(self: Pin<&Self>) -> Pin<ThinRef<'_, Trait>>

where Self: Sized,

Map a pinned reference to to a pinned thin reference

fn as_pin_thin_ref_mut(self: Pin<&mut Self>) -> Pin<ThinRefMut<'_, Trait>>

where Self: Sized,

Map a pinned mutable reference to to a pinned mutable thin reference

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