Struct RegionHighlightMode

Source

pub struct RegionHighlightMode<'tcx> {
    highlight_regions: [Option<(Region<'tcx>, usize)>; 3],
    highlight_bound_region: Option<(BoundRegionKind, usize)>,
}

Expand description

The “region highlights” are used to control region printing during specific error messages. When a “region highlight” is enabled, it gives an alternate way to print specific regions. For now, we always print those regions using a number, so something like “'0”.

Regions not selected by the region highlight mode are presently unaffected.

Fields§

§highlight_regions: [Option<(Region<'tcx>, usize)>; 3]

If enabled, when we see the selected region, use “'N” instead of the ordinary behavior.

§highlight_bound_region: Option<(BoundRegionKind, usize)>

If enabled, when printing a “free region” that originated from the given ty::BoundRegionKind, print it as “'1”. Free regions that would ordinarily have names print as normal.

This is used when you have a signature like fn foo(x: &u32, y: &'a u32) and we want to give a name to the region of the reference x.

Struct RegionHighlightModeCopy item path

Fields§

Implementations§

impl<'tcx> RegionHighlightMode<'tcx>

pub fn maybe_highlighting_region( &mut self, region: Option<Region<'tcx>>, number: Option<usize>, )

pub fn highlighting_region(&mut self, region: Region<'tcx>, number: usize)

pub fn highlighting_region_vid( &mut self, tcx: TyCtxt<'tcx>, vid: RegionVid, number: usize, )

fn region_highlighted(&self, region: Region<'tcx>) -> Option<usize>

pub fn highlighting_bound_region(&mut self, br: BoundRegionKind, number: usize)

Trait Implementations§

impl<'tcx> Clone for RegionHighlightMode<'tcx>

fn clone(&self) -> RegionHighlightMode<'tcx>

fn clone_from(&mut self, source: &Self)

impl<'tcx> Default for RegionHighlightMode<'tcx>

fn default() -> RegionHighlightMode<'tcx>

impl<'tcx> Copy for RegionHighlightMode<'tcx>

Auto Trait Implementations§

impl<'tcx> DynSend for RegionHighlightMode<'tcx>

impl<'tcx> DynSync for RegionHighlightMode<'tcx>

impl<'tcx> Freeze for RegionHighlightMode<'tcx>

impl<'tcx> RefUnwindSafe for RegionHighlightMode<'tcx>

impl<'tcx> Send for RegionHighlightMode<'tcx>

impl<'tcx> Sync for RegionHighlightMode<'tcx>

impl<'tcx> Unpin for RegionHighlightMode<'tcx>

impl<'tcx> UnwindSafe for RegionHighlightMode<'tcx>

Blanket Implementations§

impl<T> Aligned for T

const ALIGN: Alignment = _

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

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]

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]

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> CloneToUninit for Twhere T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut T)

impl<T, R> CollectAndApply<T, R> for T

fn collect_and_apply<I, F>(iter: I, f: F) -> Rwhere I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

type Output = R

impl<T> Filterable for T

fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self>

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>where F: FnOnce(&Self) -> bool,

impl<P> IntoQueryParam<P> for P

fn into_query_param(self) -> P

impl<T> MaybeResult<T> for T

type Error = !

fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

impl<T> Pointable for T

const ALIGN: usize = _

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Same for T

type Output = T

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

Struct RegionHighlightMode

impl<T> Any for T
where T: 'static + ?Sized,

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

impl<T, U> Into<U> for T
where U: From<T>,

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

impl<T> ToOwned for T
where T: Clone,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

impl<'a, T> Captures<'a> for T
where T: ?Sized,

impl<T> ErasedDestructor for T
where T: 'static,

impl<T> MaybeSendSync for T
where T: Send + Sync,