pub struct Arm<'hir> {
pub hir_id: HirId,
pub span: Span,
pub pat: &'hir Pat<'hir>,
pub guard: Option<Guard<'hir>>,
pub body: &'hir Expr<'hir>,
}Expand description
Represents a single arm of a match expression, e.g.
<pat> (if <guard>) => <body>.
Fields§
§hir_id: HirId§span: Span§pat: &'hir Pat<'hir>If this pattern and the optional guard matches, then body is evaluated.
guard: Option<Guard<'hir>>Optional guard clause.
body: &'hir Expr<'hir>The expression the arm evaluates to if this arm matches.
Trait Implementations§
source§impl<'hir, __CTX> HashStable<__CTX> for Arm<'hir>where
__CTX: HashStableContext,
impl<'hir, __CTX> HashStable<__CTX> for Arm<'hir>where __CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
impl<'hir> Copy for Arm<'hir>
Auto Trait Implementations§
impl<'hir> RefUnwindSafe for Arm<'hir>
impl<'hir> !Send for Arm<'hir>
impl<'hir> !Sync for Arm<'hir>
impl<'hir> Unpin for Arm<'hir>
impl<'hir> UnwindSafe for Arm<'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: 48 bytes