761     pub(crate) struct CastFrom<Dst: ?Sized> {
763         _marker: PhantomData<Dst>,
768     unsafe impl<Src, Dst> crate::pointer::cast::Cast<Src, Dst> for CastFrom<Dst>
771         Dst: KnownLayout + ?Sized,
777     unsafe impl<Src, Dst> crate::pointer::cast::CastExact<Src, Dst> for CastFrom<Dst>
780         Dst: KnownLayout + ?Sized,
788     unsafe impl<Src, Dst> crate::pointer::cast::Project<Src, Dst> for CastFrom<Dst>
791         Dst: KnownLayout + ?Sized,
799         fn project(src: PtrInner<'_, Src>) -> *mut Dst {  in project()  argument
809             struct CastParams<Src: ?Sized, Dst: ?Sized> {  in project()
812                 _dst: PhantomData<Dst>,  in project()
905             impl<Src: ?Sized, Dst: ?Sized> Copy for CastParams<Src, Dst> {}  in project()
906             impl<Src: ?Sized, Dst: ?Sized> Clone for CastParams<Src, Dst> {  in project()
912             impl<Src: ?Sized, Dst: ?Sized> CastParams<Src, Dst> {  in project()
916                 ) -> Option<CastParams<Src, Dst>> {  in project()  argument
1021             impl<Src: KnownLayout + ?Sized, Dst: KnownLayout + ?Sized> CastParams<Src, Dst> {  in project()
1033                 ) -> Dst::PointerMetadata {  in project()
1061                     Dst::PointerMetadata::from_elem_count(dst_meta)  in project()
1069             impl<Src, Dst> Params<Src> for Dst  in project()  implementation
1072                 Dst: KnownLayout + ?Sized,  in project()
1074                 const CAST_PARAMS: CastParams<Src, Dst> =  in project()
1075                     match CastParams::try_compute(&Src::LAYOUT, &Dst::LAYOUT) {  in project()
1084             let params = <Dst as Params<Src>>::CAST_PARAMS;  in project()
1093             <Dst as KnownLayout>::raw_from_ptr_len(src.as_non_null().cast(), dst_meta).as_ptr()  in project()