Struct AppliedMemberConstraint

Source

pub(crate) struct AppliedMemberConstraint {
    pub(crate) member_region_scc: ConstraintSccIndex,
    pub(crate) min_choice: RegionVid,
    pub(crate) member_constraint_index: NllMemberConstraintIndex,
}

Expand description

Each time that apply_member_constraint is successful, it appends one of these structs to the member_constraints_applied field. This is used in error reporting to trace out what happened.

The way that apply_member_constraint works is that it effectively adds a new lower bound to the SCC it is analyzing: so you wind up with 'R: 'O where 'R is the pick-region and 'O is the minimal viable option.

Fields§

§member_region_scc: ConstraintSccIndex

The SCC that was affected. (The “member region”.)

The vector if AppliedMemberConstraint elements is kept sorted by this field.

§min_choice: RegionVid

The “best option” that apply_member_constraint found – this was added as an “ad-hoc” lower-bound to member_region_scc.

§member_constraint_index: NllMemberConstraintIndex

The “member constraint index” – we can find out details about the constraint from set.member_constraints[member_constraint_index].

Struct AppliedMemberConstraintCopy item path

Fields§

Trait Implementations§

impl Debug for AppliedMemberConstraint

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations§

impl DynSend for AppliedMemberConstraint

impl DynSync for AppliedMemberConstraint

impl Freeze for AppliedMemberConstraint

impl RefUnwindSafe for AppliedMemberConstraint

impl Send for AppliedMemberConstraint

impl Sync for AppliedMemberConstraint

impl Unpin for AppliedMemberConstraint

impl UnwindSafe for AppliedMemberConstraint

Blanket Implementations§

impl<T> Aligned for T

const ALIGN: Alignment = _

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

fn type_id(&self) -> TypeId

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, 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

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Layout§

Struct AppliedMemberConstraint

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

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

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

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, 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,