ParamCandidate(ty::PolyTraitPredicate<'tcx>),
ImplCandidate(DefId),
- AutoImplCandidate(DefId),
+ AutoImplCandidate,
/// This is a trait matching with a projected type as `Self`, and we found
/// an applicable bound in the trait definition. The `usize` is an index
- /// into the list returned by `tcx.item_bounds`.
- ProjectionCandidate(usize),
+ /// into the list returned by `tcx.item_bounds`. The constness is the
+ /// constness of the bound in the trait.
+ ProjectionCandidate(usize, ty::BoundConstness),
/// Implementation of a `Fn`-family trait by one of the anonymous types
/// generated for an `||` expression.
/// Builtin implementation of `Pointee`.
PointeeCandidate,
- TraitAliasCandidate(DefId),
+ TraitAliasCandidate,
/// Matching `dyn Trait` with a supertrait of `Trait`. The index is the
/// position in the iterator returned by
/// Implementation of `const Destruct`, optionally from a custom `impl const Drop`.
ConstDestructCandidate(Option<DefId>),
-
- /// Witnesses the fact that a type is a tuple.
- TupleCandidate,
}
/// The result of trait evaluation. The order is important