use pin_project::pin_project; #[pin( __private( project = EnumProj, project_ref = EnumProjRef, project_replace = EnumProjOwn ) )] enum Enum { Struct { #[pin] pinned1: T, #[pin] pinned2: T, unpinned1: U, unpinned2: U }, Tuple(#[pin] T, #[pin] T, U, U), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(unused_tuple_struct_fields)] #[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 EnumProj<'pin, T, U> where Enum: 'pin, { Struct { pinned1: ::pin_project::__private::Pin<&'pin mut (T)>, pinned2: ::pin_project::__private::Pin<&'pin mut (T)>, unpinned1: &'pin mut (U), unpinned2: &'pin mut (U), }, Tuple( ::pin_project::__private::Pin<&'pin mut (T)>, ::pin_project::__private::Pin<&'pin mut (T)>, &'pin mut (U), &'pin mut (U), ), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(unused_tuple_struct_fields)] #[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 EnumProjRef<'pin, T, U> where Enum: 'pin, { Struct { pinned1: ::pin_project::__private::Pin<&'pin (T)>, pinned2: ::pin_project::__private::Pin<&'pin (T)>, unpinned1: &'pin (U), unpinned2: &'pin (U), }, Tuple( ::pin_project::__private::Pin<&'pin (T)>, ::pin_project::__private::Pin<&'pin (T)>, &'pin (U), &'pin (U), ), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(unused_tuple_struct_fields)] #[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 EnumProjOwn { Struct { pinned1: ::pin_project::__private::PhantomData, pinned2: ::pin_project::__private::PhantomData, unpinned1: U, unpinned2: U, }, Tuple( ::pin_project::__private::PhantomData, ::pin_project::__private::PhantomData, U, U, ), Unit, } #[allow(box_pointers)] #[allow(deprecated)] #[allow(explicit_outlives_requirements)] #[allow(single_use_lifetimes)] #[allow(unreachable_pub)] #[allow(unused_tuple_struct_fields)] #[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 { #[allow(dead_code)] fn project<'pin>( self: _pin_project::__private::Pin<&'pin mut Self>, ) -> EnumProj<'pin, T, U> { unsafe { match self.get_unchecked_mut() { Self::Struct { pinned1, pinned2, unpinned1, unpinned2 } => { EnumProj::Struct { pinned1: _pin_project::__private::Pin::new_unchecked( pinned1, ), pinned2: _pin_project::__private::Pin::new_unchecked( pinned2, ), unpinned1, unpinned2, } } Self::Tuple(_0, _1, _2, _3) => { EnumProj::Tuple( _pin_project::__private::Pin::new_unchecked(_0), _pin_project::__private::Pin::new_unchecked(_1), _2, _3, ) } Self::Unit => EnumProj::Unit, } } } #[allow(dead_code)] #[allow(clippy::missing_const_for_fn)] fn project_ref<'pin>( self: _pin_project::__private::Pin<&'pin Self>, ) -> EnumProjRef<'pin, T, U> { unsafe { match self.get_ref() { Self::Struct { pinned1, pinned2, unpinned1, unpinned2 } => { EnumProjRef::Struct { pinned1: _pin_project::__private::Pin::new_unchecked( pinned1, ), pinned2: _pin_project::__private::Pin::new_unchecked( pinned2, ), unpinned1, unpinned2, } } Self::Tuple(_0, _1, _2, _3) => { EnumProjRef::Tuple( _pin_project::__private::Pin::new_unchecked(_0), _pin_project::__private::Pin::new_unchecked(_1), _2, _3, ) } Self::Unit => EnumProjRef::Unit, } } } #[allow(dead_code)] fn project_replace( self: _pin_project::__private::Pin<&mut Self>, __replacement: Self, ) -> EnumProjOwn { 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 { pinned1, pinned2, unpinned1, unpinned2 } => { let __result = EnumProjOwn::Struct { pinned1: _pin_project::__private::PhantomData, pinned2: _pin_project::__private::PhantomData, unpinned1: _pin_project::__private::ptr::read(unpinned1), unpinned2: _pin_project::__private::ptr::read(unpinned2), }; { let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new( pinned2, ); let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new( pinned1, ); } __result } Self::Tuple(_0, _1, _2, _3) => { let __result = EnumProjOwn::Tuple( _pin_project::__private::PhantomData, _pin_project::__private::PhantomData, _pin_project::__private::ptr::read(_2), _pin_project::__private::ptr::read(_3), ); { let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new( _1, ); let __guard = _pin_project::__private::UnsafeDropInPlaceGuard::new( _0, ); } __result } Self::Unit => { let __result = EnumProjOwn::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, __field2: T, __field3: 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() {}