pub trait TypeSuperFoldable<I: Interner>: TypeFoldable<I> {
// Required method
fn try_super_fold_with<F: FallibleTypeFolder<I>>(
self,
folder: &mut F,
) -> Result<Self, F::Error>;
// Provided method
fn super_fold_with<F: TypeFolder<I>>(self, folder: &mut F) -> Self { ... }
}
Required Methods§
Sourcefn try_super_fold_with<F: FallibleTypeFolder<I>>(
self,
folder: &mut F,
) -> Result<Self, F::Error>
fn try_super_fold_with<F: FallibleTypeFolder<I>>( self, folder: &mut F, ) -> Result<Self, F::Error>
Provides a default fold for a recursive type of interest. This should
only be called within TypeFolder
methods, when a non-custom traversal
is desired for the value of the type of interest passed to that method.
For example, in MyFolder::try_fold_ty(ty)
, it is valid to call
ty.try_super_fold_with(self)
, but any other folding should be done
with xyz.try_fold_with(self)
.
Provided Methods§
Sourcefn super_fold_with<F: TypeFolder<I>>(self, folder: &mut F) -> Self
fn super_fold_with<F: TypeFolder<I>>(self, folder: &mut F) -> Self
A convenient alternative to try_super_fold_with
for use with
infallible folders. Do not override this method, to ensure coherence
with try_super_fold_with
.
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.