From 23fc1c59d78ffb524265caa1908503f50816335a Mon Sep 17 00:00:00 2001
From: Hugo Herbelin
Date: Sat, 6 Oct 2018 11:04:03 +0200
Subject: A state-free version of is_polymorphic.

---
 kernel/environ.ml | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'kernel/environ.ml')

diff --git a/kernel/environ.ml b/kernel/environ.ml
index dffcd70282..2fa33eb1cd 100644
--- a/kernel/environ.ml
+++ b/kernel/environ.ml
@@ -680,6 +680,16 @@ let remove_hyps ids check_context check_value ctxt =
   in
   fst (remove_hyps ctxt)
 
+(* A general request *)
+
+let is_polymorphic env r =
+  let open Names.GlobRef in
+  match r with
+  | VarRef _id -> false
+  | ConstRef c -> polymorphic_constant c env
+  | IndRef ind -> polymorphic_ind ind env
+  | ConstructRef cstr -> polymorphic_ind (inductive_of_constructor cstr) env
+
 (*spiwack: the following functions assemble the pieces of the retroknowledge
    note that the "consistent" register function is available in the module
    Safetyping, Environ only synchronizes the proactive and the reactive parts*)
-- 
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