Trait DynCastExtHelper 

pub trait DynCastExtHelper<T>
where
    T: ?Sized,
{
    type Target;
    type Source;
    type Config;

    // Required method
    fn _dyn_cast(self) -> Result<Self::Target, Self::Source>;
}

Used to implement DynCastExt.

Required Associated Types

type Target

The wanted trait object that is returned if the cast succeeded.

type Source

The original trait object that is returned if the cast failed.

type Config

The DynCastConfig that is used to preform the conversion.

Required Methods

fn _dyn_cast(self) -> Result<Self::Target, Self::Source>

This method is used to cast from one trait object type to another.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<'a, T, F> DynCastExtHelper<T> for &'a F

where T: 'static + ?Sized, F: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + GetDynCastConfig<T> + ?Sized,

type Target = &'a T

type Source = &'a F

type Config = <F as GetDynCastConfig<T>>::Config

fn _dyn_cast( self, ) -> Result<<&'a F as DynCastExtHelper<T>>::Target, <&'a F as DynCastExtHelper<T>>::Source>

impl<'a, T, F> DynCastExtHelper<T> for &'a mut F

where T: 'static + ?Sized, F: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + GetDynCastConfig<T> + ?Sized,

type Target = &'a mut T

type Source = &'a mut F

type Config = <F as GetDynCastConfig<T>>::Config

fn _dyn_cast( self, ) -> Result<<&'a mut F as DynCastExtHelper<T>>::Target, <&'a mut F as DynCastExtHelper<T>>::Source>

impl<T, F> DynCastExtHelper<T> for Box<F>

where T: 'static + ?Sized, F: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + GetDynCastConfig<T> + ?Sized,

Available on crate feature alloc only.

type Target = Box<T>

type Source = Box<F>

type Config = <F as GetDynCastConfig<T>>::Config

fn _dyn_cast( self, ) -> Result<<Box<F> as DynCastExtHelper<T>>::Target, <Box<F> as DynCastExtHelper<T>>::Source>

impl<T, F> DynCastExtHelper<T> for Rc<F>

where T: 'static + ?Sized, F: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + GetDynCastConfig<T> + ?Sized,

Available on crate feature alloc only.

type Target = Rc<T>

type Source = Rc<F>

type Config = <F as GetDynCastConfig<T>>::Config

fn _dyn_cast( self, ) -> Result<<Rc<F> as DynCastExtHelper<T>>::Target, <Rc<F> as DynCastExtHelper<T>>::Source>

Implementors

impl<T, F> DynCastExtHelper<T> for Arc<F>

where T: 'static + ?Sized, F: 'static + DynCast<<F as GetDynCastConfig<T>>::Config> + GetDynCastConfig<T> + ?Sized,

Available on crate feature alloc only.

type Target = Arc<T>

type Source = Arc<F>

type Config = <F as GetDynCastConfig<T>>::Config