diff options
| -rw-r--r-- | checker/checkInductive.ml | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/checker/checkInductive.ml b/checker/checkInductive.ml index 66d7e9cfee..051f51bbb3 100644 --- a/checker/checkInductive.ml +++ b/checker/checkInductive.ml @@ -20,7 +20,7 @@ exception InductiveMismatch of MutInd.t * string let check mind field b = if not b then raise (InductiveMismatch (mind,field)) -let to_entry (mb:mutual_inductive_body) : Entries.mutual_inductive_entry = +let to_entry mind (mb:mutual_inductive_body) : Entries.mutual_inductive_entry = let open Entries in let nparams = List.length mb.mind_params_ctxt in (* include letins *) let mind_entry_record = match mb.mind_record with @@ -28,7 +28,27 @@ let to_entry (mb:mutual_inductive_body) : Entries.mutual_inductive_entry = | PrimRecord data -> Some (Some (Array.map (fun (x,_,_,_) -> x) data)) in let mind_entry_universes = match mb.mind_universes with - | Monomorphic univs -> Monomorphic_entry univs + | Monomorphic _ -> + (* We only need to rebuild the set of constraints for template polymorphic + inductive types. The set of monomorphic constraints is already part of + the graph at that point, but we need to emulate a broken bound variable + mechanism for template inductive types. *) + let fold accu ind = match ind.mind_arity with + | RegularArity _ -> accu + | TemplateArity ar -> + match accu with + | None -> Some ar.template_context + | Some ctx -> + (* Ensure that all template contexts agree. This is enforced by the + kernel. *) + let () = check mind "mind_arity" (ContextSet.equal ctx ar.template_context) in + Some ctx + in + let univs = match Array.fold_left fold None mb.mind_packets with + | None -> ContextSet.empty + | Some ctx -> ctx + in + Monomorphic_entry univs | Polymorphic auctx -> Polymorphic_entry (AUContext.names auctx, AUContext.repr auctx) in let mind_entry_inds = Array.map_to_list (fun ind -> @@ -137,7 +157,7 @@ let check_same_record r1 r2 = match r1, r2 with | (NotRecord | FakeRecord | PrimRecord _), _ -> false let check_inductive env mind mb = - let entry = to_entry mb in + let entry = to_entry mind mb in let { mind_packets; mind_record; mind_finite; mind_ntypes; mind_hyps; mind_nparams; mind_nparams_rec; mind_params_ctxt; mind_universes; mind_variance; mind_sec_variance; |