Trait rustc_middle::ty::TypeVisitor

pub trait TypeVisitor<I>: Sized
where
    I: Interner,
{
    type BreakTy = !;

    // Provided methods
    fn visit_binder<T>(
        &mut self,
        t: &<I as Interner>::Binder<T>
    ) -> ControlFlow<Self::BreakTy>
       where T: TypeVisitable<I>,
             <I as Interner>::Binder<T>: TypeSuperVisitable<I> { ... }
    fn visit_ty(&mut self, t: <I as Interner>::Ty) -> ControlFlow<Self::BreakTy>
       where <I as Interner>::Ty: TypeSuperVisitable<I> { ... }
    fn visit_region(
        &mut self,
        _r: <I as Interner>::Region
    ) -> ControlFlow<Self::BreakTy> { ... }
    fn visit_const(
        &mut self,
        c: <I as Interner>::Const
    ) -> ControlFlow<Self::BreakTy>
       where <I as Interner>::Const: TypeSuperVisitable<I> { ... }
    fn visit_predicate(
        &mut self,
        p: <I as Interner>::Predicate
    ) -> ControlFlow<Self::BreakTy>
       where <I as Interner>::Predicate: TypeSuperVisitable<I> { ... }
}

This trait is implemented for every visiting traversal. There is a visit method defined for every type of interest. Each such method has a default that recurses into the type’s fields in a non-custom fashion.

Provided Associated Types

type BreakTy = !

Provided Methods

fn visit_binder<T>( &mut self, t: &<I as Interner>::Binder<T> ) -> ControlFlow<Self::BreakTy>

where T: TypeVisitable<I>, <I as Interner>::Binder<T>: TypeSuperVisitable<I>,

fn visit_ty(&mut self, t: <I as Interner>::Ty) -> ControlFlow<Self::BreakTy>

where <I as Interner>::Ty: TypeSuperVisitable<I>,

fn visit_region( &mut self, _r: <I as Interner>::Region ) -> ControlFlow<Self::BreakTy>

fn visit_const( &mut self, c: <I as Interner>::Const ) -> ControlFlow<Self::BreakTy>

where <I as Interner>::Const: TypeSuperVisitable<I>,

fn visit_predicate( &mut self, p: <I as Interner>::Predicate ) -> ControlFlow<Self::BreakTy>

where <I as Interner>::Predicate: TypeSuperVisitable<I>,

Object Safety

This trait is not object safe.

Implementors

impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for IsSuggestableVisitor<'tcx>

type BreakTy = ()

impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for HasEscapingVarsVisitor

type BreakTy = FoundEscapingVars

impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for HasTypeFlagsVisitor

type BreakTy = FoundFlags

impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for LateBoundRegionsCollector

impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for MaxUniverse

impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for ValidateBoundVars<'tcx>

type BreakTy = ()