bjoernager/rust
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Address review comments

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This commit is contained in:
Matthew Jasper 2020-07-02 21:45:28 +01:00
parent 21eccbb587
commit 8787090964
5 changed files with 69 additions and 8 deletions
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24
compiler/rustc_middle/src/query/mod.rs
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@ -159,9 +159,8 @@ rustc_queries! {
/// Returns the list of bounds that can be used for
/// `SelectionCandidate::ProjectionCandidate` and
/// `ProjectionTyCandidate::TraitDef`.
/// Specifically this is the bounds (equivalent to) those
/// written on the trait's type definition, or those
/// after the `impl` keyword
/// Specifically this is the bounds written on the trait's type
/// definition, or those after the `impl` keyword
///
/// type X: Bound + 'lt
/// ^^^^^^^^^^^
@ -169,11 +168,28 @@ rustc_queries! {
/// ^^^^^^^^^^^^^^^
///
/// `key` is the `DefId` of the associated type or opaque type.
///
/// Bounds from the parent (e.g. with nested impl trait) are not included.
query explicit_item_bounds(key: DefId) -> &'tcx [(ty::Predicate<'tcx>, Span)] {
desc { |tcx| "finding item bounds for `{}`", tcx.def_path_str(key) }
}
/// Elaborated the predicates from `explicit_item_bounds`.
/// Elaborated version of the predicates from `explicit_item_bounds`.
///
/// Example for
///
/// trait MyTrait {
/// type MyAType: Eq + ?Sized`
/// }
///
/// `explicit_item_bounds` returns `[<Self as MyTrait>::MyAType: Eq]`,
/// and `item_bounds` returns
/// [
/// <Self as Trait>::MyAType: Eq,
/// <Self as Trait>::MyAType: PartialEq<<Self as Trait>::MyAType>
/// ]
///
/// Bounds from the parent (e.g. with nested impl trait) are not included.
query item_bounds(key: DefId) -> &'tcx ty::List<ty::Predicate<'tcx>> {
desc { |tcx| "elaborating item bounds for `{}`", tcx.def_path_str(key) }
}