bjoernager/rust
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Use newtype_index!-generated types more idiomatically

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This commit is contained in:
Yotam Ofek 2025-04-14 15:52:25 +00:00
parent c580c498a1
commit 4b63362f3d
20 changed files with 61 additions and 87 deletions
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27
compiler/rustc_trait_selection/src/traits/mod.rs
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@ -643,7 +643,7 @@ fn replace_param_and_infer_args_with_placeholder<'tcx>(
) -> GenericArgsRef<'tcx> {
struct ReplaceParamAndInferWithPlaceholder<'tcx> {
tcx: TyCtxt<'tcx>,
idx: u32,
idx: ty::BoundVar,
}
impl<'tcx> TypeFolder<TyCtxt<'tcx>> for ReplaceParamAndInferWithPlaceholder<'tcx> {
@ -653,19 +653,13 @@ fn replace_param_and_infer_args_with_placeholder<'tcx>(
fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> {
if let ty::Infer(_) = t.kind() {
let idx = {
let idx = self.idx;
self.idx += 1;
idx
};
let idx = self.idx;
self.idx += 1;
Ty::new_placeholder(
self.tcx,
ty::PlaceholderType {
universe: ty::UniverseIndex::ROOT,
bound: ty::BoundTy {
var: ty::BoundVar::from_u32(idx),
kind: ty::BoundTyKind::Anon,
},
bound: ty::BoundTy { var: idx, kind: ty::BoundTyKind::Anon },
},
)
} else {
@ -675,16 +669,11 @@ fn replace_param_and_infer_args_with_placeholder<'tcx>(
fn fold_const(&mut self, c: ty::Const<'tcx>) -> ty::Const<'tcx> {
if let ty::ConstKind::Infer(_) = c.kind() {
let idx = self.idx;
self.idx += 1;
ty::Const::new_placeholder(
self.tcx,
ty::PlaceholderConst {
universe: ty::UniverseIndex::ROOT,
bound: ty::BoundVar::from_u32({
let idx = self.idx;
self.idx += 1;
idx
}),
},
ty::PlaceholderConst { universe: ty::UniverseIndex::ROOT, bound: idx },
)
} else {
c.super_fold_with(self)
@ -692,7 +681,7 @@ fn replace_param_and_infer_args_with_placeholder<'tcx>(
}
}
args.fold_with(&mut ReplaceParamAndInferWithPlaceholder { tcx, idx: 0 })
args.fold_with(&mut ReplaceParamAndInferWithPlaceholder { tcx, idx: ty::BoundVar::ZERO })
}
/// Normalizes the predicates and checks whether they hold in an empty environment. If this