Trait rustc_typeck::astconv::AstConv[][src]

pub trait AstConv<'gcx, 'tcx> {
    fn tcx<'a>(&'a self) -> TyCtxt<'a, 'gcx, 'tcx>;
fn get_type_parameter_bounds(
        &self,
        span: Span,
        def_id: DefId
    ) -> GenericPredicates<'tcx>;
fn re_infer(
        &self,
        span: Span,
        _def: Option<&RegionParameterDef>
    ) -> Option<Region<'tcx>>;
fn ty_infer(&self, span: Span) -> Ty<'tcx>;
fn projected_ty_from_poly_trait_ref(
        &self,
        span: Span,
        item_def_id: DefId,
        poly_trait_ref: PolyTraitRef<'tcx>
    ) -> Ty<'tcx>;
fn normalize_ty(&self, span: Span, ty: Ty<'tcx>) -> Ty<'tcx>;
fn set_tainted_by_errors(&self);
fn record_ty(&self, hir_id: HirId, ty: Ty<'tcx>, span: Span); fn ty_infer_for_def(&self, _def: &TypeParameterDef, span: Span) -> Ty<'tcx> { ... } }
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Required Methods

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Returns the set of bounds in scope for the type parameter with the given id.

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What lifetime should we use when a lifetime is omitted (and not elided)?

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What type should we use when a type is omitted?

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Projecting an associated type from a (potentially) higher-ranked trait reference is more complicated, because of the possibility of late-bound regions appearing in the associated type binding. This is not legal in function signatures for that reason. In a function body, we can always handle it because we can use inference variables to remove the late-bound regions.

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Normalize an associated type coming from the user.

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Invoked when we encounter an error from some prior pass (e.g. resolve) that is translated into a ty-error. This is used to help suppress derived errors typeck might otherwise report.

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Provided Methods

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Same as ty_infer, but with a known type parameter definition.

Methods

impl<'o, 'gcx: 'tcx, 'tcx> AstConv<'gcx, 'tcx> + 'o
[src]

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Given a path path that refers to an item I with the declared generics decl_generics, returns an appropriate set of substitutions for this particular reference to I.

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Given the type/region arguments provided to some path (along with an implicit Self, if this is a trait reference) returns the complete set of substitutions. This may involve applying defaulted type parameters.

Note that the type listing given here is exactly what the user provided.

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Instantiates the path for the given trait reference, assuming that it's bound to a valid trait type. Returns the def_id for the defining trait. The type cannot be a type other than a trait type.

If the projections argument is None, then assoc type bindings like Foo<T=X> are disallowed. Otherwise, they are pushed onto the vector given.

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Get the DefId of the given trait ref. It must actually be a trait.

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The given trait_ref must actually be trait.

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Transform a PolyTraitRef into a PolyExistentialTraitRef by removing the dummy Self type (TRAIT_OBJECT_DUMMY_SELF).

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Parses the programmer's textual representation of a type into our internal notion of a type.

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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🔬 This is a nightly-only experimental API. (rustc_private)

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Given the bounds on an object, determines what single region bound (if any) we can use to summarize this type. The basic idea is that we will use the bound the user provided, if they provided one, and otherwise search the supertypes of trait bounds for region bounds. It may be that we can derive no bound at all, in which case we return None.

Implementors