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<'tcx, T>) -> Binder<'tcx, T> where
    T: TypeFoldable<'tcx>,
    Self: TypeFolder<'tcx, Error = !>, 

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

fn fold_const(&mut self, c: &'tcx Const<'tcx>) -> &'tcx Const<'tcx> where
    Self: TypeFolder<'tcx, 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: 16 bytes