bjoernager/rust
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Fix comment smol mistakes

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This commit is contained in:
Ellen 2021-02-10 05:23:02 +00:00
parent 2c4337a70a
commit 0422745585
1 changed files with 5 additions and 3 deletions
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8
compiler/rustc_typeck/src/collect/type_of.rs
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@ -32,7 +32,7 @@ pub(super) fn opt_const_param_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<
// This matches on types who's paths couldn't be resolved without typeck'ing e.g. // This matches on types who's paths couldn't be resolved without typeck'ing e.g.
// //
// trait Foo { // trait Foo {
// type Assoc<const N1: usize>;; // type Assoc<const N1: usize>;
// fn foo() -> Self::Assoc<3>; // fn foo() -> Self::Assoc<3>;
// // note: if the def_id argument is the 3 then in this example // // note: if the def_id argument is the 3 then in this example
// // parent_node would be the node for Self::Assoc<_> // // parent_node would be the node for Self::Assoc<_>
@ -41,7 +41,8 @@ pub(super) fn opt_const_param_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<
// I believe this match arm is only needed for GAT but I am not 100% sure - BoxyUwU // I believe this match arm is only needed for GAT but I am not 100% sure - BoxyUwU
Node::Ty(hir_ty @ Ty { kind: TyKind::Path(QPath::TypeRelative(_, segment)), .. }) => { Node::Ty(hir_ty @ Ty { kind: TyKind::Path(QPath::TypeRelative(_, segment)), .. }) => {
// Walk up from the parent_node to find an item so that // Walk up from the parent_node to find an item so that
// we can resolve the relative path to an actual associated type // we can resolve the relative path to an actual associated type.
// For the code example above this item would be the Foo trait.
let item_hir_id = tcx let item_hir_id = tcx
.hir() .hir()
.parent_iter(hir_id) .parent_iter(hir_id)
@ -53,7 +54,8 @@ pub(super) fn opt_const_param_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<
let item_ctxt = &ItemCtxt::new(tcx, item_did) as &dyn crate::astconv::AstConv<'_>; let item_ctxt = &ItemCtxt::new(tcx, item_did) as &dyn crate::astconv::AstConv<'_>;
// This ty will be the actual associated type so that we can // This ty will be the actual associated type so that we can
// go through its generics to find which param our def_id corresponds to // go through its generics to find which param our def_id corresponds to.
// For the code example above, this ty would be the Assoc<const N1: usize>.
let ty = item_ctxt.ast_ty_to_ty(hir_ty); let ty = item_ctxt.ast_ty_to_ty(hir_ty);
if let ty::Projection(projection) = ty.kind() { if let ty::Projection(projection) = ty.kind() {
let generics = tcx.generics_of(projection.item_def_id); let generics = tcx.generics_of(projection.item_def_id);