use pin_project::pin_project; # [pin (__private (project = Proj , project_ref = ProjRef , project_replace = ProjOwn))] enum Enum { Struct { #[pin] pinned: T, unpinned: U, }, Tuple(#[pin] T, U), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(clippy::unknown_clippy_lints)] #[allow(clippy::pattern_type_mismatch)] #[allow(clippy::redundant_pub_crate)] #[allow(clippy::type_repetition_in_bounds)] #[allow(dead_code)] #[allow(clippy::mut_mut)] enum Proj<'pin, T, U> where Enum: 'pin, { Struct { pinned: ::pin_project::__private::Pin<&'pin mut (T)>, unpinned: &'pin mut (U), }, Tuple(::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U)), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(clippy::unknown_clippy_lints)] #[allow(clippy::pattern_type_mismatch)] #[allow(clippy::redundant_pub_crate)] #[allow(clippy::type_repetition_in_bounds)] #[allow(dead_code)] #[allow(clippy::ref_option_ref)] enum ProjRef<'pin, T, U> where Enum: 'pin, { Struct { pinned: ::pin_project::__private::Pin<&'pin (T)>, unpinned: &'pin (U), }, Tuple(::pin_project::__private::Pin<&'pin (T)>, &'pin (U)), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(clippy::unknown_clippy_lints)] #[allow(clippy::pattern_type_mismatch)] #[allow(clippy::redundant_pub_crate)] #[allow(clippy::type_repetition_in_bounds)] #[allow(dead_code)] #[allow(variant_size_differences)] #[allow(clippy::large_enum_variant)] enum ProjOwn { Struct { pinned: ::pin_project::__private::PhantomData, unpinned: U, }, Tuple(::pin_project::__private::PhantomData, U), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(clippy::unknown_clippy_lints)] #[allow(clippy::pattern_type_mismatch)] #[allow(clippy::redundant_pub_crate)] #[allow(clippy::type_repetition_in_bounds)] #[allow(unused_qualifications)] #[allow(clippy::semicolon_if_nothing_returned)] #[allow(clippy::use_self)] #[allow(clippy::used_underscore_binding)] const _: () = { #[allow(unused_extern_crates)] extern crate pin_project as _pin_project; impl Enum { fn project<'pin>(self: _pin_project::__private::Pin<&'pin mut Self>) -> Proj<'pin, T, U> { unsafe { match self.get_unchecked_mut() { Self::Struct { pinned, unpinned } => Proj::Struct { pinned: _pin_project::__private::Pin::new_unchecked(pinned), unpinned, }, Self::Tuple(_0, _1) => { Proj::Tuple(_pin_project::__private::Pin::new_unchecked(_0), _1) } Self::Unit => Proj::Unit, } } } #[allow(clippy::missing_const_for_fn)] fn project_ref<'pin>( self: _pin_project::__private::Pin<&'pin Self>, ) -> ProjRef<'pin, T, U> { unsafe { match self.get_ref() { Self::Struct { pinned, unpinned } => ProjRef::Struct { pinned: _pin_project::__private::Pin::new_unchecked(pinned), unpinned, }, Self::Tuple(_0, _1) => { ProjRef::Tuple(_pin_project::__private::Pin::new_unchecked(_0), _1) } Self::Unit => ProjRef::Unit, } } } fn project_replace( self: _pin_project::__private::Pin<&mut Self>, __replacement: Self, ) -> ProjOwn { unsafe { let __self_ptr: *mut Self = self.get_unchecked_mut(); let __guard = _pin_project::__private::UnsafeOverwriteGuard::new(__self_ptr, __replacement); match &mut *__self_ptr { Self::Struct { pinned, unpinned } => { let __result = ProjOwn::Struct { pinned: _pin_project::__private::PhantomData, unpinned: _pin_project::__private::ptr::read(unpinned), }; { let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(pinned); } __result } Self::Tuple(_0, _1) => { let __result = ProjOwn::Tuple( _pin_project::__private::PhantomData, _pin_project::__private::ptr::read(_1), ); { let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new(_0); } __result } Self::Unit => { let __result = ProjOwn::Unit; {} __result } } } } } #[allow(missing_debug_implementations)] struct __Enum<'pin, T, U> { __pin_project_use_generics: _pin_project::__private::AlwaysUnpin< 'pin, ( _pin_project::__private::PhantomData, _pin_project::__private::PhantomData, ), >, __field0: T, __field1: T, } impl<'pin, T, U> _pin_project::__private::Unpin for Enum where __Enum<'pin, T, U>: _pin_project::__private::Unpin { } #[doc(hidden)] unsafe impl<'pin, T, U> _pin_project::UnsafeUnpin for Enum where __Enum<'pin, T, U>: _pin_project::__private::Unpin { } trait EnumMustNotImplDrop {} #[allow(clippy::drop_bounds, drop_bounds)] impl EnumMustNotImplDrop for T {} impl EnumMustNotImplDrop for Enum {} #[doc(hidden)] impl _pin_project::__private::PinnedDrop for Enum { unsafe fn drop(self: _pin_project::__private::Pin<&mut Self>) {} } }; fn main() {}