pub struct LetStmt<'hir> {
pub pat: &'hir Pat<'hir>,
pub ty: Option<&'hir Ty<'hir>>,
pub init: Option<&'hir Expr<'hir>>,
pub els: Option<&'hir Block<'hir>>,
pub hir_id: HirId,
pub span: Span,
pub source: LocalSource,
}
Expand description
Represents a let
statement (i.e., let <pat>:<ty> = <init>;
).
Fields§
§pat: &'hir Pat<'hir>
§ty: Option<&'hir Ty<'hir>>
Type annotation, if any (otherwise the type will be inferred).
init: Option<&'hir Expr<'hir>>
Initializer expression to set the value, if any.
els: Option<&'hir Block<'hir>>
Else block for a let...else
binding.
hir_id: HirId
§span: Span
§source: LocalSource
Can be ForLoopDesugar
if the let
statement is part of a for
loop
desugaring, or AssignDesugar
if it is the result of a complex
assignment desugaring. Otherwise will be Normal
.
Trait Implementations§
source§impl<'hir, __CTX> HashStable<__CTX> for LetStmt<'hir>where
__CTX: HashStableContext,
impl<'hir, __CTX> HashStable<__CTX> for LetStmt<'hir>where
__CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
impl<'hir> Copy for LetStmt<'hir>
Auto Trait Implementations§
impl<'hir> DynSend for LetStmt<'hir>
impl<'hir> DynSync for LetStmt<'hir>
impl<'hir> Freeze for LetStmt<'hir>
impl<'hir> RefUnwindSafe for LetStmt<'hir>
impl<'hir> Send for LetStmt<'hir>
impl<'hir> Sync for LetStmt<'hir>
impl<'hir> Unpin for LetStmt<'hir>
impl<'hir> UnwindSafe for LetStmt<'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(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T
fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx 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
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
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: 64 bytes