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].

Trait Implementations§

source§

impl Debug for AppliedMemberConstraint

source§

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

const: unstable · source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.
source§

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

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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: 12 bytes