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+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+(** Entry keys for constr notations *)
+
+type side = Left | Right
+
+type gram_assoc = NonA | RightA | LeftA
+
+type gram_position =
+  | First
+  | Last
+  | Before of string
+  | After of string
+  | Level of string
+
+type production_position =
+  | BorderProd of side * gram_assoc option
+  | InternalProd
+
+type production_level =
+  | NextLevel
+  | NumLevel of int
+
+type ('lev,'pos) constr_entry_key_gen =
+  | ETName | ETReference | ETBigint
+  | ETBinder of bool
+  | ETConstr of ('lev * 'pos)
+  | ETPattern
+  | ETOther of string * string
+  | ETConstrList of ('lev * 'pos) * Tok.t list
+  | ETBinderList of bool * Tok.t list
+
+(** Entries level (left-hand-side of grammar rules) *)
+
+type constr_entry_key =
+    (int,unit) constr_entry_key_gen
+
+(** Entries used in productions (in right-hand-side of grammar rules) *)
+
+type constr_prod_entry_key =
+    (production_level,production_position) constr_entry_key_gen
+
+(** Entries used in productions, vernac side (e.g. "x bigint" or "x ident") *)
+
+type simple_constr_prod_entry_key =
+    (production_level,unit) constr_entry_key_gen