2 files changed, 30 insertions, 0 deletions
diff --git a/kernel/typeops.ml b/kernel/typeops.ml
index c3a964d2db..3481d3bedb 100644
--- a/kernel/typeops.ml
+++ b/kernel/typeops.ml
@@ -343,6 +343,28 @@ let type_of_global_in_context env r =
     let inst = Univ.make_abstract_instance univs in
     Inductive.type_of_constructor (cstr,inst) specif, univs
 
+(* Build a fresh instance for a given context, its associated substitution and
+   the instantiated constraints. *)
+
+let constr_of_global_in_context env r =
+  let open GlobRef in
+  match r with
+  | VarRef id -> mkVar id, Univ.AUContext.empty
+  | ConstRef c ->
+    let cb = lookup_constant c env in
+    let univs = Declareops.constant_polymorphic_context cb in
+    mkConstU (c, Univ.make_abstract_instance univs), univs
+  | IndRef ind ->
+    let (mib,_) = Inductive.lookup_mind_specif env ind in
+    let univs = Declareops.inductive_polymorphic_context mib in
+    mkIndU (ind, Univ.make_abstract_instance univs), univs
+  | ConstructRef cstr ->
+    let (mib,_) =
+      Inductive.lookup_mind_specif env (inductive_of_constructor cstr)
+    in
+    let univs = Declareops.inductive_polymorphic_context mib in
+    mkConstructU (cstr, Univ.make_abstract_instance univs), univs
+
 (************************************************************************)
 (************************************************************************)
 
diff --git a/kernel/typeops.mli b/kernel/typeops.mli
index e83c1b3dc5..1fd070d9d5 100644
--- a/kernel/typeops.mli
+++ b/kernel/typeops.mli
@@ -106,6 +106,14 @@ val type_of_global_in_context : env -> GlobRef.t -> types * Univ.AUContext.t
     usage. For non-universe-polymorphic constants, it does not
     matter. *)
 
+(** {6 Building a term from a global reference *)
+
+(** Map a global reference to a term in its local universe
+    context. The term should not be used without pushing it's universe
+    context in the environmnent of usage. For non-universe-polymorphic
+    constants, it does not matter. *)
+val constr_of_global_in_context : env -> GlobRef.t -> types * Univ.AUContext.t
+
 (** {6 Miscellaneous. } *)
 
 (** Check that hyps are included in env and fails with error otherwise *)