pub enum FnRetTy<'hir> {
DefaultReturn(Span),
Return(&'hir Ty<'hir>),
}
Variants§
DefaultReturn(Span)
Return type is not specified.
Functions default to ()
and
closures default to inference. Span points to where return
type would be inserted.
Return(&'hir Ty<'hir>)
Everything else.
Implementations§
Trait Implementations§
source§impl<'hir, __CTX> HashStable<__CTX> for FnRetTy<'hir>where
__CTX: HashStableContext,
impl<'hir, __CTX> HashStable<__CTX> for FnRetTy<'hir>where __CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
impl<'hir> Copy for FnRetTy<'hir>
Auto Trait Implementations§
impl<'hir> RefUnwindSafe for FnRetTy<'hir>
impl<'hir> !Send for FnRetTy<'hir>
impl<'hir> !Sync for FnRetTy<'hir>
impl<'hir> Unpin for FnRetTy<'hir>
impl<'hir> UnwindSafe for FnRetTy<'hir>
Blanket Implementations§
source§impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,
fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 16 bytes
Size for each variant:
DefaultReturn
: 8 bytesReturn
: 12 bytes