Struct MemberConstraint

pub struct MemberConstraint<'tcx> {
    pub key: OpaqueTypeKey<TyCtxt<'tcx>>,
    pub definition_span: Span,
    pub hidden_ty: Ty<'tcx>,
    pub member_region: Region<'tcx>,
    pub choice_regions: Arc<Vec<Region<'tcx>>>,
}

Requires that region must be equal to one of the regions in choice_regions. We often denote this using the syntax:

R0 member of [O1..On]

Fields

key: OpaqueTypeKey<TyCtxt<'tcx>>

The DefId and args of the opaque type causing this constraint. Used for error reporting.

definition_span: Span

The span where the hidden type was instantiated.

hidden_ty: Ty<'tcx>

The hidden type in which member_region appears: used for error reporting.

member_region: Region<'tcx>

The region R0.

choice_regions: Arc<Vec<Region<'tcx>>>

The options O1..On.

Trait Implementations

impl<'tcx> Clone for MemberConstraint<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for MemberConstraint<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> Hash for MemberConstraint<'tcx>

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<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for MemberConstraint<'tcx>

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher<SipHasher128>, )

impl<'tcx> PartialEq for MemberConstraint<'tcx>

fn eq(&self, other: &MemberConstraint<'tcx>) -> 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<'tcx> TypeFoldable<TyCtxt<'tcx>> for MemberConstraint<'tcx>

fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<MemberConstraint<'tcx>, <__F as FallibleTypeFolder<TyCtxt<'tcx>>>::Error>

where __F: FallibleTypeFolder<TyCtxt<'tcx>>,

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, folder: &mut F) -> Self

where F: TypeFolder<I>,

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for MemberConstraint<'tcx>

fn visit_with<__V>( &self, __visitor: &mut __V, ) -> <__V as TypeVisitor<TyCtxt<'tcx>>>::Result

where __V: TypeVisitor<TyCtxt<'tcx>>,

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

impl<'tcx> Eq for MemberConstraint<'tcx>

impl<'tcx> StructuralPartialEq for MemberConstraint<'tcx>

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: 48 bytes