Trait rustc_infer::infer::canonical::ir::lift::Lift

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pub trait Lift<I>: Debug {
    type Lifted: Debug;

    // Required method
    fn lift_to_interner(self, cx: I) -> Option<Self::Lifted>;
}
Expand description

A trait implemented for all X<'a> types that can be safely and efficiently converted to X<'tcx> as long as they are part of the provided TyCtxt<'tcx>. This can be done, for example, for Ty<'tcx> or GenericArgsRef<'tcx> by looking them up in their respective interners.

However, this is still not the best implementation as it does need to compare the components, even for interned values. It would be more efficient if TypedArena provided a way to determine whether the address is in the allocated range.

None is returned if the value or one of the components is not part of the provided context. For Ty, None can be returned if either the type interner doesn’t contain the TyKind key or if the address of the interned pointer differs. The latter case is possible if a primitive type, e.g., () or u8, was interned in a different context.

Required Associated Types§

Required Methods§

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fn lift_to_interner(self, cx: I) -> Option<Self::Lifted>

Implementations on Foreign Types§

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for &'a [ValTree<'a>]

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type Lifted = &'tcx [ValTree<'tcx>]

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<&'tcx [ValTree<'tcx>]>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for ConstAllocation<'a>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Const<'a>

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type Lifted = Const<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Const<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for GenericArg<'a>

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type Lifted = GenericArg<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<GenericArg<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Pattern<'a>

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type Lifted = Pattern<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Pattern<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Clause<'a>

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type Lifted = Clause<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Clause<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Predicate<'a>

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type Lifted = Predicate<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Predicate<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Region<'a>

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type Lifted = Region<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Region<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Term<'a>

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type Lifted = Term<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Term<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Ty<'a>

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type Lifted = Ty<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Ty<'tcx>>

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impl<'a, 'tcx> Lift<TyCtxt<'tcx>> for Layout<'a>

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type Lifted = Layout<'tcx>

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fn lift_to_interner(self, tcx: TyCtxt<'tcx>) -> Option<Layout<'tcx>>

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impl<'tcx> Lift<TyCtxt<'tcx>> for Safety

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impl<'tcx> Lift<TyCtxt<'tcx>> for Scalar

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impl<'tcx> Lift<TyCtxt<'tcx>> for ReifyReason

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impl<'tcx> Lift<TyCtxt<'tcx>> for Abi

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type Lifted = Abi

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fn lift_to_interner(self, _: TyCtxt<'tcx>) -> Option<Abi>

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impl<'tcx> Lift<TyCtxt<'tcx>> for bool

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impl<'tcx> Lift<TyCtxt<'tcx>> for u64

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type Lifted = u64

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fn lift_to_interner(self, _: TyCtxt<'tcx>) -> Option<u64>

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impl<'tcx> Lift<TyCtxt<'tcx>> for ()

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type Lifted = ()

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fn lift_to_interner(self, _: TyCtxt<'tcx>) -> Option<()>

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impl<'tcx> Lift<TyCtxt<'tcx>> for usize

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impl<'tcx> Lift<TyCtxt<'tcx>> for Size

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impl<'tcx> Lift<TyCtxt<'tcx>> for CtfeProvenance

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impl<'tcx> Lift<TyCtxt<'tcx>> for AllocId

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impl<'tcx> Lift<TyCtxt<'tcx>> for Promoted

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impl<'tcx> Lift<TyCtxt<'tcx>> for ParamConst

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impl<'tcx> Lift<TyCtxt<'tcx>> for ParamTy

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impl<'tcx> Lift<TyCtxt<'tcx>> for DefId

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for Const<'tcx>

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type Lifted = Const<'__lifted>

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fn lift_to_interner(self, __tcx: TyCtxt<'__lifted>) -> Option<Const<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for ConstValue<'tcx>

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type Lifted = ConstValue<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<ConstValue<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for InstanceKind<'tcx>

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type Lifted = InstanceKind<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<InstanceKind<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for UnevaluatedConst<'tcx>

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type Lifted = UnevaluatedConst<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<UnevaluatedConst<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for Instance<'tcx>

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type Lifted = Instance<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<Instance<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for PrintClosureAsImpl<'tcx>

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type Lifted = PrintClosureAsImpl<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<PrintClosureAsImpl<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for TraitPredPrintModifiersAndPath<'tcx>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for TraitRefPrintOnlyTraitName<'tcx>

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type Lifted = TraitRefPrintOnlyTraitName<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<TraitRefPrintOnlyTraitName<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for TraitRefPrintOnlyTraitPath<'tcx>

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type Lifted = TraitRefPrintOnlyTraitPath<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<TraitRefPrintOnlyTraitPath<'__lifted>>

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impl<'tcx, '__lifted> Lift<TyCtxt<'__lifted>> for TraitRefPrintSugared<'tcx>

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type Lifted = TraitRefPrintSugared<'__lifted>

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fn lift_to_interner( self, __tcx: TyCtxt<'__lifted>, ) -> Option<TraitRefPrintSugared<'__lifted>>

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impl<'tcx, T> Lift<TyCtxt<'tcx>> for Option<T>
where T: Lift<TyCtxt<'tcx>>,

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type Lifted = Option<<T as Lift<TyCtxt<'tcx>>>::Lifted>

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fn lift_to_interner( self, tcx: TyCtxt<'tcx>, ) -> Option<Option<<T as Lift<TyCtxt<'tcx>>>::Lifted>>

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impl<'tcx> Lift<TyCtxt<'tcx>> for IsConstable

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impl<'tcx> Lift<TyCtxt<'tcx>> for ClosureKind

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impl<'tcx> Lift<TyCtxt<'tcx>> for ImplPolarity

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impl<'tcx> Lift<TyCtxt<'tcx>> for PredicatePolarity

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impl<I, J> Lift<J> for ExistentialPredicate<I>
where I: Interner, J: Interner, ExistentialTraitRef<I>: Lift<J, Lifted = ExistentialTraitRef<J>>, ExistentialProjection<I>: Lift<J, Lifted = ExistentialProjection<J>>, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>,

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impl<I, J> Lift<J> for AliasTerm<I>
where I: Interner, J: Interner, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>, (): Lift<J, Lifted = ()>,

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impl<I, J> Lift<J> for AliasTy<I>
where I: Interner, J: Interner, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>, (): Lift<J, Lifted = ()>,

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type Lifted = AliasTy<J>

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impl<I, J> Lift<J> for CanonicalVarValues<I>
where I: Interner, J: Interner, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>,

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impl<I, J> Lift<J> for ClosureArgs<I>
where I: Interner, J: Interner, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>,

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impl<I, J> Lift<J> for CoercePredicate<I>
where I: Interner, J: Interner, <I as Interner>::Ty: Lift<J, Lifted = <J as Interner>::Ty>,

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impl<I, J> Lift<J> for CoroutineArgs<I>
where I: Interner, J: Interner, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>,

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impl<I, J> Lift<J> for CoroutineClosureArgs<I>
where I: Interner, J: Interner, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>,

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impl<I, J> Lift<J> for ExistentialProjection<I>
where I: Interner, J: Interner, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>, <I as Interner>::Term: Lift<J, Lifted = <J as Interner>::Term>,

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impl<I, J> Lift<J> for ExistentialTraitRef<I>
where I: Interner, J: Interner, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>,

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impl<I, J> Lift<J> for FnSig<I>
where J: Interner, <I as Interner>::Tys: Lift<J, Lifted = <J as Interner>::Tys>, bool: Lift<J, Lifted = bool>, <I as Interner>::Safety: Lift<J, Lifted = <J as Interner>::Safety>, I: Interner, <I as Interner>::Abi: Lift<J, Lifted = <J as Interner>::Abi>,

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type Lifted = FnSig<J>

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impl<I, J> Lift<J> for NormalizesTo<I>
where I: Interner, J: Interner, AliasTerm<I>: Lift<J, Lifted = AliasTerm<J>>, <I as Interner>::Term: Lift<J, Lifted = <J as Interner>::Term>,

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impl<I, J> Lift<J> for ProjectionPredicate<I>
where I: Interner, J: Interner, AliasTerm<I>: Lift<J, Lifted = AliasTerm<J>>, <I as Interner>::Term: Lift<J, Lifted = <J as Interner>::Term>,

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impl<I, J> Lift<J> for SubtypePredicate<I>
where I: Interner, J: Interner, bool: Lift<J, Lifted = bool>, <I as Interner>::Ty: Lift<J, Lifted = <J as Interner>::Ty>,

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impl<I, J> Lift<J> for TraitPredicate<I>
where I: Interner, J: Interner, TraitRef<I>: Lift<J, Lifted = TraitRef<J>>, PredicatePolarity: Lift<J, Lifted = PredicatePolarity>,

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impl<I, J> Lift<J> for TraitRef<I>
where I: Interner, J: Interner, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>, (): Lift<J, Lifted = ()>,

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type Lifted = TraitRef<J>

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impl<I, J> Lift<J> for rustc_infer::infer::canonical::ir::UnevaluatedConst<I>
where I: Interner, J: Interner, <I as Interner>::DefId: Lift<J, Lifted = <J as Interner>::DefId>, <I as Interner>::GenericArgs: Lift<J, Lifted = <J as Interner>::GenericArgs>,

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impl<I, P, J> Lift<J> for Goal<I, P>
where I: Interner, J: Interner, <I as Interner>::ParamEnv: Lift<J, Lifted = <J as Interner>::ParamEnv>, P: Lift<J, Lifted = P>,

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type Lifted = Goal<J, P>

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impl<I, U, A> Lift<U> for OutlivesPredicate<I, A>
where I: Interner, U: Interner, A: Lift<U>, <I as Interner>::Region: Lift<U, Lifted = <U as Interner>::Region>,

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type Lifted = OutlivesPredicate<U, <A as Lift<U>>::Lifted>

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impl<I, U, T> Lift<U> for Binder<I, T>
where I: Interner, U: Interner, T: Lift<U>, <I as Interner>::BoundVarKinds: Lift<U, Lifted = <U as Interner>::BoundVarKinds>,

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type Lifted = Binder<U, <T as Lift<U>>::Lifted>