Struct LateParamRegion 

pub struct LateParamRegion {
    pub scope: SolverDefId,
    pub bound_region: BoundRegionKind,
}

The parameter representation of late-bound function parameters, “some region at least as big as the scope fr.scope”.

Similar to a placeholder region as we create LateParam regions when entering a binder except they are always in the root universe and instead of using a boundvar to distinguish between others we use the DefId of the parameter. For this reason the bound_region field should basically always be BoundRegionKind::Named as otherwise there is no way of telling different parameters apart.

Fields

scope: SolverDefId

bound_region: BoundRegionKind

Trait Implementations

impl Clone for LateParamRegion

fn clone(&self) -> LateParamRegion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LateParamRegion

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

Formats the value using the given formatter.

impl<V> GenericTypeVisitable<V> for LateParamRegion

fn generic_visit_with(&self, _visitor: &mut V)

The entry point for visiting. To visit a value t with a visitor v call: t.generic_visit_with(v).

impl Hash for LateParamRegion

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for LateParamRegion

fn eq(&self, other: &LateParamRegion) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'db> TypeFoldable<DbInterner<'db>> for LateParamRegion

fn try_fold_with<F>( self, _: &mut F, ) -> Result<LateParamRegion, <F as FallibleTypeFolder<DbInterner<'db>>>::Error>

where F: FallibleTypeFolder<DbInterner<'db>>,

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F>(self, _: &mut F) -> LateParamRegion

where F: TypeFolder<DbInterner<'db>>,

The entry point for folding. To fold a value t with a folder f call: t.fold_with(f).

impl<'db> TypeVisitable<DbInterner<'db>> for LateParamRegion

fn visit_with<F>( &self, _: &mut F, ) -> <F as TypeVisitor<DbInterner<'db>>>::Result

where F: TypeVisitor<DbInterner<'db>>,

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl Copy for LateParamRegion

impl Eq for LateParamRegion

impl StructuralPartialEq for LateParamRegion