Struct rustc_middle::mir::VarBindingForm
source · pub struct VarBindingForm<'tcx> {
pub binding_mode: BindingMode,
pub opt_ty_info: Option<Span>,
pub opt_match_place: Option<(Option<Place<'tcx>>, Span)>,
pub pat_span: Span,
}
Fields§
§binding_mode: BindingMode
Is variable bound via x
, mut x
, ref x
, or ref mut x
?
opt_ty_info: Option<Span>
If an explicit type was provided for this variable binding, this holds the source Span of that type.
NOTE: if you want to change this to a HirId
, be wary that
doing so breaks incremental compilation (as of this writing),
while a Span
does not cause our tests to fail.
opt_match_place: Option<(Option<Place<'tcx>>, Span)>
Place of the RHS of the =, or the subject of the match
where this
variable is initialized. None in the case of let PATTERN;
.
Some((None, ..)) in the case of and let [mut] x = ...
because
(a) the right-hand side isn’t evaluated as a place expression.
(b) it gives a way to separate this case from the remaining cases
for diagnostics.
pat_span: Span
The span of the pattern in which this variable was bound.
Trait Implementations§
source§impl<'tcx> Clone for VarBindingForm<'tcx>
impl<'tcx> Clone for VarBindingForm<'tcx>
source§fn clone(&self) -> VarBindingForm<'tcx>
fn clone(&self) -> VarBindingForm<'tcx>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl<'tcx> Debug for VarBindingForm<'tcx>
impl<'tcx> Debug for VarBindingForm<'tcx>
source§impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for VarBindingForm<'tcx>
impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for VarBindingForm<'tcx>
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )
Auto Trait Implementations§
impl<'tcx> !RefUnwindSafe for VarBindingForm<'tcx>
impl<'tcx> !Send for VarBindingForm<'tcx>
impl<'tcx> !Sync for VarBindingForm<'tcx>
impl<'tcx> Unpin for VarBindingForm<'tcx>
impl<'tcx> !UnwindSafe for VarBindingForm<'tcx>
Blanket Implementations§
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
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Tcx, T> DepNodeParams<Tcx> for Twhere Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
source§default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_debug_str(&self, _: Tcx) -> String
source§default fn recover(_: Tcx, _: &DepNode) -> Option<T>
default fn recover(_: Tcx, _: &DepNode) -> Option<T>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<'tcx, T> ToPredicate<'tcx, T> for T
impl<'tcx, T> ToPredicate<'tcx, T> for T
fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> T
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