1 files changed, 46 insertions, 0 deletions
diff --git a/kernel/typeops.ml b/kernel/typeops.ml
index 164a47dd9a..3481d3bedb 100644
--- a/kernel/typeops.ml
+++ b/kernel/typeops.ml
@@ -319,6 +319,52 @@ let check_fixpoint env lna lar vdef vdeft =
   with NotConvertibleVect i ->
     error_ill_typed_rec_body env i lna (make_judgev vdef vdeft) lar
 
+(* Global references *)
+
+let type_of_global_in_context env r =
+  let open Names.GlobRef in
+  match r with
+  | VarRef id -> Environ.named_type id env, Univ.AUContext.empty
+  | ConstRef c ->
+    let cb = Environ.lookup_constant c env in
+    let univs = Declareops.constant_polymorphic_context cb in
+    cb.Declarations.const_type, univs
+  | IndRef ind ->
+    let (mib,_ as specif) = Inductive.lookup_mind_specif env ind in
+    let univs = Declareops.inductive_polymorphic_context mib in
+    let inst = Univ.make_abstract_instance univs in
+    let env = Environ.push_context ~strict:false (Univ.AUContext.repr univs) env in
+    Inductive.type_of_inductive env (specif, inst), univs
+  | ConstructRef cstr ->
+    let (mib,_ as specif) =
+      Inductive.lookup_mind_specif env (inductive_of_constructor cstr)
+    in
+    let univs = Declareops.inductive_polymorphic_context mib in
+    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
+
 (************************************************************************)
 (************************************************************************)