Struct CastIntoTrait

pub struct CastIntoTrait<DynTrait: ?Sized> {
    pub map: HashMap<TypeId, ImplEntry<DynTrait>>,
}

Provides methods for casting into the target trait object from other trait objects.

Fields

map: HashMap<TypeId, ImplEntry<DynTrait>>

Implementations

impl<DynTrait: ?Sized> CastIntoTrait<DynTrait>

pub fn new() -> Self

impl<To: ?Sized + 'static> CastIntoTrait<To>

pub fn from_ref<'a, From>(&self, x: &'a From) -> Option<&'a To>

where From: TraitcastFrom + ?Sized,

Tries to cast the given reference to a dynamic trait object. This will always return None if the implementation of the target trait, for the concrete type of x, has not been registered via traitcast_to_impl!.

pub fn from_mut<'a, From>(&self, x: &'a mut From) -> Option<&'a mut To>

where From: TraitcastFrom + ?Sized,

Tries to cast the given mutable reference to a dynamic trait object. This will always return None if the implementation of the target trait, for the concrete type of x, has not been registered via traitcast_to_impl!.

pub fn from_box<From>(&self, x: Box<From>) -> Result<Box<To>, Box<dyn Any>>

where From: TraitcastFrom + ?Sized,

Tries to cast the given pointer to a dynamic trait object. This will always return Err if the implementation of the target trait, for the concrete type of x, has not been registered via traitcast_to_impl!.

Trait Implementations

impl<DynTrait: ?Sized> FromIterator<ImplEntry<DynTrait>> for CastIntoTrait<DynTrait>

fn from_iter<T>(iter: T) -> Self

where T: IntoIterator<Item = ImplEntry<DynTrait>>,

Creates a value from an iterator.