Struct rustc_traits::chalk::lowering::NamedBoundVarSubstitutor

struct NamedBoundVarSubstitutor<'a, 'tcx> {
    tcx: TyCtxt<'tcx>,
    binder_index: DebruijnIndex,
    named_parameters: &'a BTreeMap<DefId, u32>,
}

This is used to replace BoundRegionKind::BrNamed with BoundRegionKind::BrAnon. Note: we assume that we will always have room for more bound vars. (i.e. we won’t ever hit the u32 limit in BrAnons).

Fields

tcx: TyCtxt<'tcx>

binder_index: DebruijnIndex

named_parameters: &'a BTreeMap<DefId, u32>

Implementations

impl<'a, 'tcx> NamedBoundVarSubstitutor<'a, 'tcx>

fn new(tcx: TyCtxt<'tcx>, named_parameters: &'a BTreeMap<DefId, u32>) -> Self

Trait Implementations

impl<'a, 'tcx> TypeFolder<'tcx> for NamedBoundVarSubstitutor<'a, 'tcx>

fn tcx<'b>(&'b self) -> TyCtxt<'tcx>

fn fold_binder<T: TypeFoldable<'tcx>>(
    &mut self,
    t: Binder<'tcx, T>
) -> Binder<'tcx, T>

fn fold_region(&mut self, r: Region<'tcx>) -> Region<'tcx>

type Error = !

fn fold_ty(&mut self, t: &TyS) -> &TyS where
    Self: TypeFolder<'tcx, Error = !>, 

fn fold_const(&mut self, c: &Const) -> &Const where
    Self: TypeFolder<'tcx, Error = !>, 

fn fold_predicate(&mut self, p: Predicate) -> Predicate where
    Self: TypeFolder<'tcx, Error = !>, 

fn fold_mir_const(&mut self, c: ConstantKind) -> ConstantKind where
    Self: TypeFolder<'tcx, Error = !>, 

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: 24 bytes