Module rustc_trait_selection::error_reporting::traits::suggestions

Structs

• AwaitsVisitor 🔒
  Collect all the awaited expressions within the input expression.
• CoroutineData 🔒
• FindTypeParam 🔒
  Look for type param in an ADT being used only through a reference to confirm that suggesting param: ?Sized would be a valid constraint.
• ReplaceImplTraitFolder 🔒
• ReplaceImplTraitVisitor 🔒
  Collect the spans that we see the generic param param_did
• ReturnsVisitor
  Collect all the returned expressions within the input expression. Used to point at the return spans when we want to suggest some change to them.
• SelfVisitor
  Collect all the paths that reference Self. Used to suggest replacing associated types with an explicit type in where clauses.

Enums

• CoroutineInteriorOrUpvar

Traits

• NextTypeParamName
  Suggest a new type parameter name for diagnostic purposes.

Functions

• get_deref_type_and_refs 🔒
• get_explanation_based_on_obligation 🔒
• hint_missing_borrow 🔒
  Add a hint to add a missing borrow or remove an unnecessary one.
• point_at_assoc_type_restriction 🔒
  On impl evaluation cycles, look for Self::AssocTy restrictions in where clauses, explain they are not allowed and if possible suggest alternatives.
• predicate_constraint 🔒
• suggest_desugaring_async_fn_to_impl_future_in_trait
• suggest_restriction
  Type parameter needs more bounds. The trivial case is T where T: Bound, but it can also be an impl Trait param that needs to be decomposed to a type param for cleaner code.