/// // type parameters, ImplSource will carry resolutions for those as well:
/// concrete.clone(); // ImplSource(Impl_1, [ImplSource(Impl_2, [ImplSource(Impl_3)])])
///
-/// // Case A: ImplSource points at a specific impl. Only possible when
-/// // type is concretely known. If the impl itself has bounded
-/// // type parameters, ImplSource will carry resolutions for those as well:
-/// concrete.clone(); // ImplSource(Impl_1, [ImplSource(Impl_2, [ImplSource(Impl_3)])])
-///
/// // Case B: ImplSource must be provided by caller. This applies when
/// // type is a type parameter.
/// param.clone(); // ImplSource::Param
/// ImplSource for a `const Drop` implementation.
ConstDestruct(ImplSourceConstDestructData<N>),
-
- /// ImplSource for a `std::marker::Tuple` implementation.
- /// This has no nested predicates ever, so no data.
- Tuple,
}
impl<'tcx, N> ImplSource<'tcx, N> {
ImplSource::Object(d) => d.nested,
ImplSource::FnPointer(d) => d.nested,
ImplSource::DiscriminantKind(ImplSourceDiscriminantKindData)
- | ImplSource::Pointee(ImplSourcePointeeData)
- | ImplSource::Tuple => Vec::new(),
+ | ImplSource::Pointee(ImplSourcePointeeData) => vec![],
ImplSource::TraitAlias(d) => d.nested,
ImplSource::TraitUpcasting(d) => d.nested,
ImplSource::ConstDestruct(i) => i.nested,
ImplSource::Object(d) => &d.nested,
ImplSource::FnPointer(d) => &d.nested,
ImplSource::DiscriminantKind(ImplSourceDiscriminantKindData)
- | ImplSource::Pointee(ImplSourcePointeeData)
- | ImplSource::Tuple => &[],
+ | ImplSource::Pointee(ImplSourcePointeeData) => &[],
ImplSource::TraitAlias(d) => &d.nested,
ImplSource::TraitUpcasting(d) => &d.nested,
ImplSource::ConstDestruct(i) => &i.nested,
nested: i.nested.into_iter().map(f).collect(),
})
}
- ImplSource::Tuple => ImplSource::Tuple,
}
}
}