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36 changes: 18 additions & 18 deletions compiler/rustc_hir_analysis/src/astconv/bounds.rs
Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
&self,
bounds: &mut Bounds<'tcx>,
self_ty: Ty<'tcx>,
ast_bounds: &'tcx [hir::GenericBound<'tcx>],
hir_bounds: &'tcx [hir::GenericBound<'tcx>],
self_ty_where_predicates: Option<(LocalDefId, &'tcx [hir::WherePredicate<'tcx>])>,
span: Span,
) {
Expand All @@ -35,9 +35,9 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {

// Try to find an unbound in bounds.
let mut unbounds: SmallVec<[_; 1]> = SmallVec::new();
let mut search_bounds = |ast_bounds: &'tcx [hir::GenericBound<'tcx>]| {
for ab in ast_bounds {
let hir::GenericBound::Trait(ptr, modifier) = ab else {
let mut search_bounds = |hir_bounds: &'tcx [hir::GenericBound<'tcx>]| {
for hir_bound in hir_bounds {
let hir::GenericBound::Trait(ptr, modifier) = hir_bound else {
continue;
};
match modifier {
Expand All @@ -60,7 +60,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
}
}
};
search_bounds(ast_bounds);
search_bounds(hir_bounds);
if let Some((self_ty, where_clause)) = self_ty_where_predicates {
for clause in where_clause {
if let hir::WherePredicate::BoundPredicate(pred) = clause
Expand Down Expand Up @@ -109,34 +109,34 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
///
/// ```ignore (illustrative)
/// fn foo<T>() where for<'a> T: Trait<'a> + Copy {}
/// // ^^^^^^^ ^ ^^^^^^^^^^^^^^^^ `ast_bounds`, in HIR form
/// // ^^^^^^^ ^ ^^^^^^^^^^^^^^^^ `hir_bounds`, in HIR form
/// // | |
/// // | `param_ty`, in ty form
/// // `bound_vars`, in ty form
///
/// fn bar<T>() where T: for<'a> Trait<'a> + Copy {} // no overarching `bound_vars` here!
/// // ^ ^^^^^^^^^^^^^^^^^^^^^^^^ `ast_bounds`, in HIR form
/// // ^ ^^^^^^^^^^^^^^^^^^^^^^^^ `hir_bounds`, in HIR form
/// // |
/// // `param_ty`, in ty form
/// ```
///
/// ### A Note on Binders
///
/// There is an implied binder around `param_ty` and `ast_bounds`.
/// There is an implied binder around `param_ty` and `hir_bounds`.
/// See `lower_poly_trait_ref` for more details.
#[instrument(level = "debug", skip(self, ast_bounds, bounds))]
#[instrument(level = "debug", skip(self, hir_bounds, bounds))]
pub(crate) fn lower_poly_bounds<'hir, I: Iterator<Item = &'hir hir::GenericBound<'tcx>>>(
&self,
param_ty: Ty<'tcx>,
ast_bounds: I,
hir_bounds: I,
bounds: &mut Bounds<'tcx>,
bound_vars: &'tcx ty::List<ty::BoundVariableKind>,
only_self_bounds: OnlySelfBounds,
) where
'tcx: 'hir,
{
for ast_bound in ast_bounds {
match ast_bound {
for hir_bound in hir_bounds {
match hir_bound {
hir::GenericBound::Trait(poly_trait_ref, modifier) => {
let (constness, polarity) = match modifier {
hir::TraitBoundModifier::Const => {
Expand Down Expand Up @@ -183,14 +183,14 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
/// ### Example
///
/// ```ignore (illustrative)
/// fn foo<T: Bar + Baz>() {}
/// // ^ ^^^^^^^^^ ast_bounds
/// fn foo<T: Bar + Baz>() { }
/// // ^ ^^^^^^^^^ hir_bounds
/// // param_ty
/// ```
pub(crate) fn lower_mono_bounds(
&self,
param_ty: Ty<'tcx>,
ast_bounds: &[hir::GenericBound<'tcx>],
hir_bounds: &[hir::GenericBound<'tcx>],
filter: PredicateFilter,
) -> Bounds<'tcx> {
let mut bounds = Bounds::default();
Expand All @@ -204,7 +204,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {

self.lower_poly_bounds(
param_ty,
ast_bounds.iter().filter(|bound| match filter {
hir_bounds.iter().filter(|bound| match filter {
PredicateFilter::All
| PredicateFilter::SelfOnly
| PredicateFilter::SelfAndAssociatedTypeBounds => true,
Expand Down Expand Up @@ -496,7 +496,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
}
// Lower a constraint like `Item: Debug` as found in HIR bound `T: Iterator<Item: Debug>`
// to a bound involving a projection: `<T as Iterator>::Item: Debug`.
hir::TypeBindingKind::Constraint { bounds: ast_bounds } => {
hir::TypeBindingKind::Constraint { bounds: hir_bounds } => {
// NOTE: If `only_self_bounds` is true, do NOT expand this associated type bound into
// a trait predicate, since we only want to add predicates for the `Self` type.
if !only_self_bounds.0 {
Expand All @@ -505,7 +505,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
let param_ty = Ty::new_alias(tcx, ty::Projection, projection_ty.skip_binder());
self.lower_poly_bounds(
param_ty,
ast_bounds.iter(),
hir_bounds.iter(),
bounds,
projection_ty.bound_vars(),
only_self_bounds,
Expand Down
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