Struct rustc_hir_analysis::check::wfcheck::GATArgsCollector

struct GATArgsCollector<'tcx> {
    gat: DefId,
    regions: FxHashSet<(Region<'tcx>, usize)>,
    types: FxHashSet<(Ty<'tcx>, usize)>,
}

TypeVisitor that looks for uses of GATs like <P0 as Trait<P1..Pn>>::GAT<Pn..Pm> and adds the arguments P0..Pm into the two vectors, regions and types (depending on their kind). For each parameter Pi also track the index i.

Fields

gat: DefId

regions: FxHashSet<(Region<'tcx>, usize)>

types: FxHashSet<(Ty<'tcx>, usize)>

Implementations

impl<'tcx> GATArgsCollector<'tcx>

fn visit<T: TypeFoldable<TyCtxt<'tcx>>>( gat: DefId, t: T, ) -> (FxHashSet<(Region<'tcx>, usize)>, FxHashSet<(Ty<'tcx>, usize)>)

Trait Implementations

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

fn visit_ty(&mut self, t: Ty<'tcx>)

type Result = ()

fn visit_binder<T>(&mut self, t: &Binder<I, T>) -> Self::Result

where T: TypeVisitable<I>,

fn visit_region(&mut self, r: <I as Interner>::Region) -> Self::Result

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

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

fn visit_clauses(&mut self, p: <I as Interner>::Clauses) -> Self::Result

fn visit_error( &mut self, _guar: <I as Interner>::ErrorGuaranteed, ) -> Self::Result

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: 72 bytes