Struct rustc_trait_selection::opaque_types::ReverseMapper

struct ReverseMapper<'tcx> {
    tcx: TyCtxt<'tcx>,
    tainted_by_errors: bool,
    opaque_type_def_id: DefId,
    map: FxHashMap<GenericArg<'tcx>, GenericArg<'tcx>>,
    map_missing_regions_to_empty: bool,
    hidden_ty: Option<Ty<'tcx>>,
    span: Span,
}

Fields

tcx: TyCtxt<'tcx>

tainted_by_errors: bool

If errors have already been reported in this fn, we suppress our own errors because they are sometimes derivative.

opaque_type_def_id: DefId

map: FxHashMap<GenericArg<'tcx>, GenericArg<'tcx>>

map_missing_regions_to_empty: bool

hidden_ty: Option<Ty<'tcx>>

initially Some, set to None once error has been reported

span: Span

Span of function being checked.

Implementations

impl<'tcx> ReverseMapper<'tcx>

fn new(
    tcx: TyCtxt<'tcx>,
    tainted_by_errors: bool,
    opaque_type_def_id: DefId,
    map: FxHashMap<GenericArg<'tcx>, GenericArg<'tcx>>,
    hidden_ty: Ty<'tcx>,
    span: Span
) -> Self

fn fold_kind_mapping_missing_regions_to_empty(
    &mut self,
    kind: GenericArg<'tcx>
) -> GenericArg<'tcx>

fn fold_kind_normally(&mut self, kind: GenericArg<'tcx>) -> GenericArg<'tcx>

Trait Implementations

impl<'tcx> TypeFolder<'tcx> for ReverseMapper<'tcx>

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

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

fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx>

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

type Error = !

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