Struct rustc_hir_analysis::variance::terms::TermsContext

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pub(crate) struct TermsContext<'a, 'tcx> {
    pub tcx: TyCtxt<'tcx>,
    pub arena: &'a DroplessArena,
    pub lang_items: Vec<(LocalDefId, Vec<Variance>)>,
    pub inferred_starts: LocalDefIdMap<InferredIndex>,
    pub inferred_terms: Vec<&'a VarianceTerm<'a>>,
}
Expand description

The first pass over the crate simply builds up the set of inferreds.

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§tcx: TyCtxt<'tcx>§arena: &'a DroplessArena§lang_items: Vec<(LocalDefId, Vec<Variance>)>

For marker types, UnsafeCell, and other lang items where variance is hardcoded, records the item-id and the hardcoded variance.

§inferred_starts: LocalDefIdMap<InferredIndex>

Maps from the node id of an item to the first inferred index used for its type & region parameters.

§inferred_terms: Vec<&'a VarianceTerm<'a>>

Maps from an InferredIndex to the term for that variable.

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impl<'a, 'tcx> TermsContext<'a, 'tcx>

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fn add_inferreds_for_item(&mut self, def_id: LocalDefId)

Auto Trait Implementations§

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impl<'a, 'tcx> Freeze for TermsContext<'a, 'tcx>

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impl<'a, 'tcx> !RefUnwindSafe for TermsContext<'a, 'tcx>

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impl<'a, 'tcx> !Send for TermsContext<'a, 'tcx>

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impl<'a, 'tcx> !Sync for TermsContext<'a, 'tcx>

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impl<'a, 'tcx> Unpin for TermsContext<'a, 'tcx>

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impl<'a, 'tcx> !UnwindSafe for TermsContext<'a, 'tcx>

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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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: 96 bytes