Trait TypeVisitable 

pub trait TypeVisitable<I: Interner>: Debug {
    // Required method
    fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result;
}

This trait is implemented for every type that can be visited, providing the skeleton of the traversal.

To implement this conveniently, use the derive macro located in rustc_macros.

Required Methods

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

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

For most types, this just traverses the value, calling visit_with on each field/element.

For types of interest (such as Ty), the implementation of this method calls a visitor method specifically for that type (such as V::visit_ty). This is where control transfers from TypeVisitable to TypeVisitor.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<I: Interner, A: TypeVisitable<I>, B: TypeVisitable<I>, C: TypeVisitable<I>> TypeVisitable<I> for (A, B, C)

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>, E: TypeVisitable<I>> TypeVisitable<I> for Result<T, E>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>, Ix: Idx> TypeVisitable<I> for IndexVec<Ix, T>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>, S> TypeVisitable<I> for IndexSet<T, S>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>, U: TypeVisitable<I>> TypeVisitable<I> for (T, U)

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>, const N: usize> TypeVisitable<I> for SmallVec<[T; N]>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for &[T]

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for Arc<T>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for Box<T>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for Box<[T]>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for Option<T>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for ThinVec<T>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for Vec<T>

fn visit_with<V: TypeVisitor<I>>(&self, visitor: &mut V) -> V::Result

impl<I: Interner> TypeVisitable<I> for ()

fn visit_with<F: TypeVisitor<I>>(&self, _: &mut F) -> F::Result

impl<I: Interner> TypeVisitable<I> for bool

fn visit_with<F: TypeVisitor<I>>(&self, _: &mut F) -> F::Result

impl<I: Interner> TypeVisitable<I> for u16

fn visit_with<F: TypeVisitor<I>>(&self, _: &mut F) -> F::Result

impl<I: Interner> TypeVisitable<I> for u32

fn visit_with<F: TypeVisitor<I>>(&self, _: &mut F) -> F::Result

impl<I: Interner> TypeVisitable<I> for u64

fn visit_with<F: TypeVisitor<I>>(&self, _: &mut F) -> F::Result

impl<I: Interner> TypeVisitable<I> for usize

fn visit_with<F: TypeVisitor<I>>(&self, _: &mut F) -> F::Result

Implementors

impl<I, A> TypeVisitable<I> for OutlivesPredicate<I, A>

where I: Interner, A: TypeVisitable<I>, I::Region: TypeVisitable<I>,

impl<I, P> TypeVisitable<I> for Goal<I, P>

where I: Interner, I::ParamEnv: TypeVisitable<I>, P: TypeVisitable<I>,

impl<I, P> TypeVisitable<I> for QueryInput<I, P>

where I: Interner, Goal<I, P>: TypeVisitable<I>, I::PredefinedOpaques: TypeVisitable<I>,

impl<I, T> TypeVisitable<I> for Placeholder<I, T>

where I: Interner, T: TypeVisitable<I>,

impl<I, T> TypeVisitable<I> for State<I, T>

where I: Interner, CanonicalVarValues<I>: TypeVisitable<I>, T: TypeVisitable<I>,

impl<I, T> TypeVisitable<I> for Unnormalized<I, T>

where I: Interner, T: TypeVisitable<I>,

impl<I: Interner, T: TypeVisitable<I>> TypeVisitable<I> for Binder<I, T>

impl<I: Interner, T> !TypeVisitable<I> for EarlyBinder<I, T>

For early binders, you should first call instantiate before using any visitors.

impl<I: Interner> TypeVisitable<I> for AliasRelationDirection

impl<I: Interner> TypeVisitable<I> for BoundConstness

impl<I: Interner> TypeVisitable<I> for BuiltinImplSource

impl<I: Interner> TypeVisitable<I> for Certainty

impl<I: Interner> TypeVisitable<I> for DebruijnIndex

impl<I: Interner> TypeVisitable<I> for GoalSource

impl<I: Interner> TypeVisitable<I> for Mutability

impl<I: Interner> TypeVisitable<I> for PredicatePolarity

impl<I: Interner> TypeVisitable<I> for rustc_type_ir::region_constraint::RegionConstraint<I>

impl<I: Interner> TypeVisitable<I> for UniverseIndex

impl<I: Interner> TypeVisitable<I> for Variance

impl<I: Interner> TypeVisitable<I> for VisibleForLeakCheck

impl<I> TypeVisitable<I> for AccessedOpaques<I>

where I: Interner, RerunCondition<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for AliasBoundKind

where I: Interner,

impl<I> TypeVisitable<I> for AliasTerm<I>

where I: Interner, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for AliasTy<I>

where I: Interner, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for BoundVarIndexKind

where I: Interner,

impl<I> TypeVisitable<I> for CanonicalVarValues<I>

where I: Interner, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ClauseKind<I>

where I: Interner, TraitPredicate<I>: TypeVisitable<I>, OutlivesPredicate<I, I::Region>: TypeVisitable<I>, OutlivesPredicate<I, I::Ty>: TypeVisitable<I>, ProjectionPredicate<I>: TypeVisitable<I>, I::Const: TypeVisitable<I>, I::Ty: TypeVisitable<I>, I::Term: TypeVisitable<I>, HostEffectPredicate<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ClosureArgs<I>

where I: Interner, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for CoercePredicate<I>

where I: Interner, I::Ty: TypeVisitable<I>,

impl<I> TypeVisitable<I> for CoroutineArgs<I>

where I: Interner, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for CoroutineClosureArgs<I>

where I: Interner, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for CoroutineClosureSignature<I>

where I: Interner, I::Ty: TypeVisitable<I>,

impl<I> TypeVisitable<I> for CoroutineWitnessTypes<I>

where I: Interner, I::Tys: TypeVisitable<I>, I::RegionAssumptions: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ExistentialPredicate<I>

where I: Interner, ExistentialTraitRef<I>: TypeVisitable<I>, ExistentialProjection<I>: TypeVisitable<I>, I::TraitId: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ExistentialProjection<I>

where I: Interner, I::TraitAssocTermId: TypeVisitable<I>, I::GenericArgs: TypeVisitable<I>, I::Term: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ExistentialTraitRef<I>

where I: Interner, I::TraitId: TypeVisitable<I>, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ExternalConstraintsData<I>

where I: Interner, ExternalRegionConstraints<I>: TypeVisitable<I>, Vec<(OpaqueTypeKey<I>, I::Ty)>: TypeVisitable<I>, NestedNormalizationGoals<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ExternalRegionConstraints<I>

where I: Interner, Vec<(RegionConstraint<I>, VisibleForLeakCheck)>: TypeVisitable<I>, RegionConstraint<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for FnHeader<I>

where I: Interner,

impl<I> TypeVisitable<I> for FnSig<I>

where I: Interner, I::Tys: TypeVisitable<I>,

impl<I> TypeVisitable<I> for FnSigKind<I>

where I: Interner,

impl<I> TypeVisitable<I> for FnSigTys<I>

where I: Interner, I::Tys: TypeVisitable<I>,

impl<I> TypeVisitable<I> for GenSig<I>

where I: Interner, I::Ty: TypeVisitable<I>,

impl<I> TypeVisitable<I> for HostEffectPredicate<I>

where I: Interner, TraitRef<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for NestedNormalizationGoals<I>

where I: Interner, Vec<(GoalSource, Goal<I, I::Predicate>)>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for NormalizesTo<I>

where I: Interner, AliasTerm<I>: TypeVisitable<I>, I::Term: TypeVisitable<I>,

impl<I> TypeVisitable<I> for OpaqueTypeKey<I>

where I: Interner, I::LocalOpaqueTyId: TypeVisitable<I>, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for PatternKind<I>

where I: Interner, I::Const: TypeVisitable<I>, I::PatList: TypeVisitable<I>,

impl<I> TypeVisitable<I> for PredicateKind<I>

where I: Interner, ClauseKind<I>: TypeVisitable<I>, I::TraitId: TypeVisitable<I>, SubtypePredicate<I>: TypeVisitable<I>, CoercePredicate<I>: TypeVisitable<I>, I::Const: TypeVisitable<I>, NormalizesTo<I>: TypeVisitable<I>, I::Term: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ProbeKind<I>

where I: Interner, QueryResult<I>: TypeVisitable<I>, CandidateSource<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ProjectionPredicate<I>

where I: Interner, AliasTerm<I>: TypeVisitable<I>, I::Term: TypeVisitable<I>,

impl<I> TypeVisitable<I> for rustc_type_ir::RegionConstraint<I>

where I: Interner, OutlivesPredicate<I, I::GenericArg>: TypeVisitable<I>, RegionEqPredicate<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for RegionEqPredicate<I>

where I: Interner, I::Region: TypeVisitable<I>,

impl<I> TypeVisitable<I> for RerunCondition<I>

where I: Interner, SmallCopyList<I::LocalDefId>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for RerunReason

where I: Interner,

impl<I> TypeVisitable<I> for Response<I>

where I: Interner, CanonicalVarValues<I>: TypeVisitable<I>, I::ExternalConstraints: TypeVisitable<I>,

impl<I> TypeVisitable<I> for SubtypePredicate<I>

where I: Interner, I::Ty: TypeVisitable<I>,

impl<I> TypeVisitable<I> for TraitPredicate<I>

where I: Interner, TraitRef<I>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for TraitRef<I>

where I: Interner, I::TraitId: TypeVisitable<I>, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for TypeAndMut<I>

where I: Interner, I::Ty: TypeVisitable<I>,

impl<I> TypeVisitable<I> for TypeError<I>

where I: Interner, ExpectedFound<I::Const>: TypeVisitable<I>, I::Region: TypeVisitable<I>, BoundRegion<I>: TypeVisitable<I>, ExpectedFound<I::Ty>: TypeVisitable<I>, ExpectedFound<I::TraitId>: TypeVisitable<I>, I::Ty: TypeVisitable<I>, I::Const: TypeVisitable<I>, ExpectedFound<I::DefId>: TypeVisitable<I>, ExpectedFound<I::BoundExistentialPredicates>: TypeVisitable<I>, I::DefId: TypeVisitable<I>,

impl<I> TypeVisitable<I> for UnevaluatedConst<I>

where I: Interner, I::UnevaluatedConstId: TypeVisitable<I>, I::GenericArgs: TypeVisitable<I>,

impl<I> TypeVisitable<I> for UnsafeBinderInner<I>

where I: Interner, Binder<I, I::Ty>: TypeVisitable<I>,

impl<I> TypeVisitable<I> for ValTreeKind<I>

where I: Interner, I::ScalarInt: TypeVisitable<I>, I::Consts: TypeVisitable<I>,

impl<T, I> TypeVisitable<I> for ExpectedFound<T>

where I: Interner, T: TypeVisitable<I>,

impl<T: Copy + Debug + Hash + Eq, I> TypeVisitable<I> for SmallCopyList<T>

where I: Interner, [T; 1]: TypeVisitable<I>, [T; 2]: TypeVisitable<I>, [T; 3]: TypeVisitable<I>,