diff options
Diffstat (limited to 'printing/printer.ml')
| -rw-r--r-- | printing/printer.ml | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/printing/printer.ml b/printing/printer.ml index 2ad9e268c2..b0a4c8b738 100644 --- a/printing/printer.ml +++ b/printing/printer.ml @@ -173,6 +173,38 @@ let safe_gen f env sigma c = let safe_pr_lconstr_env = safe_gen pr_lconstr_env let safe_pr_constr_env = safe_gen pr_constr_env +let u_ident = Id.of_string "u" + +let universe_binders_with_opt_names orig names = + let orig = Univ.AUContext.names orig in + let orig = Array.to_list orig in + let udecl = match names with + | None -> orig + | Some udecl -> + try + List.map2 (fun orig {CAst.v = na} -> + match na with + | Anonymous -> orig + | Name id -> Name id) orig udecl + with Invalid_argument _ -> + let len = List.length orig in + CErrors.user_err ~hdr:"universe_binders_with_opt_names" + Pp.(str "Universe instance should have length " ++ int len) + in + let fold_named i ubind = function + | Name id -> Id.Map.add id (Univ.Level.var i) ubind + | Anonymous -> ubind + in + let ubind = List.fold_left_i fold_named 0 UnivNames.empty_binders udecl in + let fold_anons i (u_ident, ubind) = function + | Name _ -> u_ident, ubind + | Anonymous -> + let id = Namegen.next_ident_away_from u_ident (fun id -> Id.Map.mem id ubind) in + (id, Id.Map.add id (Univ.Level.var i) ubind) + in + let (_, ubind) = List.fold_left_i fold_anons 0 (u_ident, ubind) udecl in + ubind + let pr_universe_ctx_set sigma c = if !Detyping.print_universes && not (Univ.ContextSet.is_empty c) then fnl()++pr_in_comment (v 0 (Univ.pr_universe_context_set (Termops.pr_evd_level sigma) c)) |