(*
    ||M||  This file is part of HELM, an Hypertextual, Electronic        
    ||A||  Library of Mathematics, developed at the Computer Science     
    ||T||  Department, University of Bologna, Italy.                     
    ||I||                                                                
    ||T||  HELM is free software; you can redistribute it and/or         
    ||A||  modify it under the terms of the GNU General Public License   
    \   /  version 2 or (at your option) any later version.      
     \ /   This software is distributed as is, NO WARRANTY.     
      V_______________________________________________________________ *)

(* $Id: terms.mli 9822 2009-06-03 15:37:06Z tassi $ *)

module type NCicContext = 
  sig
    val metasenv : NCic.metasenv
    val subst : NCic.substitution
    val context : NCic.context
  end

module NCicBlob(C : NCicContext) : Terms.Blob with type t = NCic.term = struct

  type t = NCic.term

  let eq x y = NCicReduction.alpha_eq C.metasenv C.subst C.context x y;;

  let rec compare x y = 
    match x,y with
    | NCic.Rel i, NCic.Rel j -> i-j
    | NCic.Const r1, NCic.Const r2 -> NReference.compare r1 r2
    | NCic.Appl l1, NCic.Appl l2 -> assert false (* TODO *)
    | _ -> assert false
  ;;

  let pp t = 
    NCicPp.ppterm ~context:C.context ~metasenv:C.metasenv ~subst:C.subst t;;

 end