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-rw-r--r--kernel/typeops.ml22
1 files changed, 22 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
+
(************************************************************************)
(************************************************************************)