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OpsemInhabitedCtx

rustc_middle::ty::inhabitedness

Struct OpsemInhabitedCtx 

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struct OpsemInhabitedCtx<'tcx> {
    tcx: TyCtxt<'tcx>,
    typing_env: TypingEnv<'tcx>,
    seen: Option<FxHashSet<DefId>>,
    stop_at_ref: bool,
}
Expand description

Context for computing whether a type is inhabited on the opsem level. See is_opsem_inhabited above for the spec of what we compute.

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§tcx: TyCtxt<'tcx>§typing_env: TypingEnv<'tcx>§seen: Option<FxHashSet<DefId>>

IDs of ADTs that have been encountered in the current stack. It’s None unless we are inside the is_opsem_inhabited_raw query, which is only invoked for more complex types.

§stop_at_ref: bool

If an ADT is encountered recursively within itself, then stop_at_ref is set to true, and then any nested references are considered inhabited.

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impl<'tcx> OpsemInhabitedCtx<'tcx>

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

See is_opsem_inhabited above for the spec of what we compute.

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

Auto Trait Implementations§

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impl<'tcx> !RefUnwindSafe for OpsemInhabitedCtx<'tcx>

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impl<'tcx> !Send for OpsemInhabitedCtx<'tcx>

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impl<'tcx> !Sync for OpsemInhabitedCtx<'tcx>

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impl<'tcx> !UnwindSafe for OpsemInhabitedCtx<'tcx>

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impl<'tcx> DynSend for OpsemInhabitedCtx<'tcx>

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impl<'tcx> DynSync for OpsemInhabitedCtx<'tcx>

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impl<'tcx> Freeze for OpsemInhabitedCtx<'tcx>

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impl<'tcx> Unpin for OpsemInhabitedCtx<'tcx>

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impl<'tcx> UnsafeUnpin for OpsemInhabitedCtx<'tcx>

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impl<T> Aligned for T

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const ALIGN: Alignment

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
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Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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fn into_query_key(self) -> K

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const ALIGN: usize

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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