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-rw-r--r--engine/termops.ml24
1 files changed, 21 insertions, 3 deletions
diff --git a/engine/termops.ml b/engine/termops.ml
index 2bd0c06d6d..b7fa2dc4a4 100644
--- a/engine/termops.ml
+++ b/engine/termops.ml
@@ -1071,9 +1071,9 @@ let replace_term_gen sigma eq_fun c by_c in_t =
let replace_term sigma c byc t = replace_term_gen sigma EConstr.eq_constr c byc t
let vars_of_env env =
- let s =
- Context.Named.fold_outside (fun decl s -> Id.Set.add (NamedDecl.get_id decl) s)
- (named_context env) ~init:Id.Set.empty in
+ let s = Environ.ids_of_named_context_val (Environ.named_context_val env) in
+ if List.is_empty (Environ.rel_context env) then s
+ else
Context.Rel.fold_outside
(fun decl s -> match RelDecl.get_name decl with Name id -> Id.Set.add id s | _ -> s)
(rel_context env) ~init:s
@@ -1165,6 +1165,24 @@ let rec is_Prop sigma c = match EConstr.kind sigma c with
| Cast (c,_,_) -> is_Prop sigma c
| _ -> false
+let rec is_Set sigma c = match EConstr.kind sigma c with
+ | Sort u ->
+ begin match EConstr.ESorts.kind sigma u with
+ | Prop Pos -> true
+ | _ -> false
+ end
+ | Cast (c,_,_) -> is_Set sigma c
+ | _ -> false
+
+let rec is_Type sigma c = match EConstr.kind sigma c with
+ | Sort u ->
+ begin match EConstr.ESorts.kind sigma u with
+ | Type _ -> true
+ | _ -> false
+ end
+ | Cast (c,_,_) -> is_Type sigma c
+ | _ -> false
+
(* eq_constr extended with universe erasure *)
let compare_constr_univ sigma f cv_pb t1 t2 =
let open EConstr in