Struct rustc_middle::ty::fold::BoundVarReplacer

struct BoundVarReplacer<'a, 'tcx> {
    tcx: TyCtxt<'tcx>,
    current_index: DebruijnIndex,
    fld_r: Option<&'a mut (dyn FnMut(BoundRegion) -> Region<'tcx> + 'a)>,
    fld_t: Option<&'a mut (dyn FnMut(BoundTy) -> Ty<'tcx> + 'a)>,
    fld_c: Option<&'a mut (dyn FnMut(BoundVar, Ty<'tcx>) -> &'tcx Const<'tcx> + 'a)>,
}

Replaces the escaping bound vars (late bound regions or bound types) in a type.

Fields

tcx: TyCtxt<'tcx>

current_index: DebruijnIndex

As with RegionFolder, represents the index of a binder just outside the ones we have visited.

fld_r: Option<&'a mut (dyn FnMut(BoundRegion) -> Region<'tcx> + 'a)>

fld_t: Option<&'a mut (dyn FnMut(BoundTy) -> Ty<'tcx> + 'a)>

fld_c: Option<&'a mut (dyn FnMut(BoundVar, Ty<'tcx>) -> &'tcx Const<'tcx> + 'a)>

Implementations

impl<'a, 'tcx> BoundVarReplacer<'a, 'tcx>

fn new(
    tcx: TyCtxt<'tcx>,
    fld_r: Option<&'a mut (dyn FnMut(BoundRegion) -> Region<'tcx> + 'a)>,
    fld_t: Option<&'a mut (dyn FnMut(BoundTy) -> Ty<'tcx> + 'a)>,
    fld_c: Option<&'a mut (dyn FnMut(BoundVar, Ty<'tcx>) -> &'tcx Const<'tcx> + 'a)>
) -> Self

Trait Implementations

impl<'a, 'tcx> TypeFolder<'tcx> for BoundVarReplacer<'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_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx>

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

fn fold_const(&mut self, ct: &'tcx Const<'tcx>) -> &'tcx Const<'tcx>

type Error = !

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

fn fold_mir_const(&mut self, c: ConstantKind<'tcx>) -> ConstantKind<'tcx> 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: 64 bytes