Struct rustc_hir_typeck::upvar::InferBorrowKind
source · struct InferBorrowKind<'tcx> {
closure_def_id: LocalDefId,
capture_information: Vec<(Place<'tcx>, CaptureInfo)>,
fake_reads: Vec<(Place<'tcx>, FakeReadCause, HirId)>,
}
Fields§
§closure_def_id: LocalDefId
§capture_information: Vec<(Place<'tcx>, CaptureInfo)>
For each Place that is captured by the closure, we track the minimal kind of access we need (ref, ref mut, move, etc) and the expression that resulted in such access.
Consider closure where s.str1 is captured via an ImmutableBorrow and s.str2 via a MutableBorrow
struct SomeStruct { str1: String, str2: String };
// Assume that the HirId for the variable definition is `V1`
let mut s = SomeStruct { str1: format!("s1"), str2: format!("s2") };
let fix_s = |new_s2| {
// Assume that the HirId for the expression `s.str1` is `E1`
println!("Updating SomeStruct with str1={0}", s.str1);
// Assume that the HirId for the expression `*s.str2` is `E2`
s.str2 = new_s2;
};
For closure fix_s
, (at a high level) the map contains
ⓘ
Place { V1, [ProjectionKind::Field(Index=0, Variant=0)] } : CaptureKind { E1, ImmutableBorrow }
Place { V1, [ProjectionKind::Field(Index=1, Variant=0)] } : CaptureKind { E2, MutableBorrow }
fake_reads: Vec<(Place<'tcx>, FakeReadCause, HirId)>
Trait Implementations§
source§impl<'tcx> Delegate<'tcx> for InferBorrowKind<'tcx>
impl<'tcx> Delegate<'tcx> for InferBorrowKind<'tcx>
source§fn fake_read(
&mut self,
place: &PlaceWithHirId<'tcx>,
cause: FakeReadCause,
diag_expr_id: HirId,
)
fn fake_read( &mut self, place: &PlaceWithHirId<'tcx>, cause: FakeReadCause, diag_expr_id: HirId, )
The
place
should be a fake read because of specified cause
.source§fn consume(&mut self, place_with_id: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)
fn consume(&mut self, place_with_id: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)
The value found at
place
is moved, depending
on mode
. Where diag_expr_id
is the id used for diagnostics for place
. Read moresource§fn borrow(
&mut self,
place_with_id: &PlaceWithHirId<'tcx>,
diag_expr_id: HirId,
bk: BorrowKind,
)
fn borrow( &mut self, place_with_id: &PlaceWithHirId<'tcx>, diag_expr_id: HirId, bk: BorrowKind, )
The value found at
place
is being borrowed with kind bk
.
diag_expr_id
is the id used for diagnostics (see consume
for more details).source§fn mutate(&mut self, assignee_place: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)
fn mutate(&mut self, assignee_place: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)
The path at
assignee_place
is being assigned to.
diag_expr_id
is the id used for diagnostics (see consume
for more details).source§fn copy(&mut self, place_with_id: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)
fn copy(&mut self, place_with_id: &PlaceWithHirId<'tcx>, diag_expr_id: HirId)
The value found at
place
is being copied.
diag_expr_id
is the id used for diagnostics (see consume
for more details).Auto Trait Implementations§
impl<'tcx> Freeze for InferBorrowKind<'tcx>
impl<'tcx> !RefUnwindSafe for InferBorrowKind<'tcx>
impl<'tcx> Send for InferBorrowKind<'tcx>
impl<'tcx> Sync for InferBorrowKind<'tcx>
impl<'tcx> Unpin for InferBorrowKind<'tcx>
impl<'tcx> !UnwindSafe for InferBorrowKind<'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
Mutably borrows from an owned value. Read more
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
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<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<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> 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_error: &CycleError, _guar: ErrorGuaranteed, ) -> 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,
impl<T> ErasedDestructor for Twhere
T: 'static,
impl<T> MaybeSendSync for 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: 56 bytes