add subst_identity_iter and subst_identity_iter_copied methods on EarlyBinder; use this to simplify some EarlyBinder noise around explicit_item_bounds calls
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12 changed files with 43 additions and 50 deletions
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@ -297,8 +297,7 @@ fn bounds_reference_self(tcx: TyCtxt<'_>, trait_def_id: DefId) -> SmallVec<[Span
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tcx.associated_items(trait_def_id)
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.in_definition_order()
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.filter(|item| item.kind == ty::AssocKind::Type)
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.flat_map(|item| tcx.explicit_item_bounds(item.def_id).transpose_iter())
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.map(|bound| bound.map_bound(|b| *b).subst_identity())
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.flat_map(|item| tcx.explicit_item_bounds(item.def_id).subst_identity_iter_copied())
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.filter_map(|pred_span| predicate_references_self(tcx, pred_span))
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.collect()
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}
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