Struct rustc_traits::chalk::lowering::RegionsSubstitutor

pub(crate) struct RegionsSubstitutor<'tcx> {
    tcx: TyCtxt<'tcx>,
    reempty_placeholder: Region<'tcx>,
}

Used to substitute specific Regionss with placeholders.

Fields

tcx: TyCtxt<'tcx>

reempty_placeholder: Region<'tcx>

Implementations

impl<'tcx> RegionsSubstitutor<'tcx>

pub(crate) fn new(tcx: TyCtxt<'tcx>, reempty_placeholder: Region<'tcx>) -> Self

Trait Implementations

impl<'tcx> TypeFolder<'tcx> for RegionsSubstitutor<'tcx>

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

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

type Error = !

fn fold_binder<T>(&mut self, t: Binder<T>) -> Binder<T> where
    T: TypeFoldable<'tcx>,
    Self: TypeFolder<'tcx, 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: 16 bytes