Struct rustc_trait_selection::traits::project::PlaceholderReplacer
source · pub struct PlaceholderReplacer<'me, 'tcx> {
infcx: &'me InferCtxt<'tcx>,
mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>,
mapped_types: BTreeMap<PlaceholderType, BoundTy>,
mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>,
universe_indices: &'me [Option<UniverseIndex>],
current_index: DebruijnIndex,
}
Expand description
The inverse of BoundVarReplacer
: replaces placeholders with the bound vars from which they came.
Fields§
§infcx: &'me InferCtxt<'tcx>
§mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>
§mapped_types: BTreeMap<PlaceholderType, BoundTy>
§mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>
§universe_indices: &'me [Option<UniverseIndex>]
§current_index: DebruijnIndex
Implementations§
source§impl<'me, 'tcx> PlaceholderReplacer<'me, 'tcx>
impl<'me, 'tcx> PlaceholderReplacer<'me, 'tcx>
pub fn replace_placeholders<T: TypeFoldable<TyCtxt<'tcx>>>( infcx: &'me InferCtxt<'tcx>, mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>, mapped_types: BTreeMap<PlaceholderType, BoundTy>, mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>, universe_indices: &'me [Option<UniverseIndex>], value: T ) -> T
Trait Implementations§
source§impl<'tcx> TypeFolder<TyCtxt<'tcx>> for PlaceholderReplacer<'_, 'tcx>
impl<'tcx> TypeFolder<TyCtxt<'tcx>> for PlaceholderReplacer<'_, 'tcx>
fn interner(&self) -> TyCtxt<'tcx>
fn fold_binder<T: TypeFoldable<TyCtxt<'tcx>>>( &mut self, t: Binder<'tcx, T> ) -> Binder<'tcx, T>
fn fold_region(&mut self, r0: Region<'tcx>) -> Region<'tcx>
fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx>
fn fold_const(&mut self, ct: Const<'tcx>) -> Const<'tcx>
Auto Trait Implementations§
impl<'me, 'tcx> !RefUnwindSafe for PlaceholderReplacer<'me, 'tcx>
impl<'me, 'tcx> !Send for PlaceholderReplacer<'me, 'tcx>
impl<'me, 'tcx> !Sync for PlaceholderReplacer<'me, 'tcx>
impl<'me, 'tcx> Unpin for PlaceholderReplacer<'me, 'tcx>
impl<'me, 'tcx> !UnwindSafe for PlaceholderReplacer<'me, 'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<I, F> FallibleTypeFolder<I> for Fwhere
I: Interner,
F: TypeFolder<I>,
impl<I, F> FallibleTypeFolder<I> for Fwhere I: Interner, F: TypeFolder<I>,
type Error = !
fn interner(&self) -> I
fn try_fold_binder<T>( &mut self, t: <I as Interner>::Binder<T> ) -> Result<<I as Interner>::Binder<T>, !>where T: TypeFoldable<I>, <I as Interner>::Binder<T>: TypeSuperFoldable<I>,
fn try_fold_ty( &mut self, t: <I as Interner>::Ty ) -> Result<<I as Interner>::Ty, !>where <I as Interner>::Ty: TypeSuperFoldable<I>,
fn try_fold_region( &mut self, r: <I as Interner>::Region ) -> Result<<I as Interner>::Region, !>
fn try_fold_const( &mut self, c: <I as Interner>::Const ) -> Result<<I as Interner>::Const, !>where <I as Interner>::Const: TypeSuperFoldable<I>,
fn try_fold_predicate( &mut self, p: <I as Interner>::Predicate ) -> Result<<I as Interner>::Predicate, !>where <I as Interner>::Predicate: TypeSuperFoldable<I>,
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: 104 bytes