(***********************************************************************
    v      *   The Coq Proof Assistant  /  The Coq Development Team     
   <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud 
     \VV/  *************************************************************
      //   *      This file is distributed under the terms of the       
           *       GNU Lesser General Public License Version 2.1        
  ***********************************************************************)

open Compat

(** Entry keys for constr notations *)

type side = Left | Right

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
  | ETConstr of ('lev * 'pos)
  | ETPattern
  | ETOther of string * string
  | ETConstrList of ('lev * 'pos) * 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