(* Copyright (C) 2000, HELM Team.
 * 
 * This file is part of HELM, an Hypertextual, Electronic
 * Library of Mathematics, developed at the Computer Science
 * Department, University of Bologna, Italy.
 * 
 * HELM is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * HELM is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HELM; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
 * 
 * For details, see the HELM World-Wide-Web page,
 * http://cs.unibo.it/helm/.
 *)

(*CSC codice cut & paste da cicPp e xmlcommand *)

exception NotImplemented;;

let dtdname = "http://www.cs.unibo.it/helm/dtd/annotations.dtd";;

let get_ann ids_to_annotations =
 CicXPath.get_annotation ids_to_annotations
;;

let print_ann i2a id =
 let module X = Xml in
  let ann = get_ann i2a id in
   match ann with
      None -> [<>]
    | Some ann -> (X.xml_nempty "Annotation" ["of", id] (X.xml_cdata ann))
;;

(*CSC ottimizzazione: al posto di curi cdepth (vedi codice) *)
(* It takes in input a hash table mapping ids to annotations, an annotated 
term, and gives back a Xml.token Stream.t representing the .ann file *)
let print_term i2a =
 let rec aux =
  let module C = Cic in
  let module X = Xml in
  let module U = UriManager in
    function
       C.ARel (id,_,_,_) -> print_ann i2a id
     | C.AMeta (id,_,_) -> print_ann i2a id
     | C.ASort (id,_) -> print_ann i2a id
     | C.AImplicit _ -> raise NotImplemented
     | C.AProd (id,_,s,t) -> [< print_ann i2a id ; aux s ; aux t >]
     | C.ACast (id,v,t) -> [< print_ann i2a id ; aux v ; aux t >]
     | C.ALambda (id,_,s,t) -> [< print_ann i2a id ; aux s ; aux t >]
     | C.ALetIn (id,_,s,t) -> [< print_ann i2a id ; aux s ; aux t >]
     | C.AAppl (id,li) ->
        [< print_ann i2a id ;
           List.fold_right (fun x i -> [< (aux x) ; i >]) li [<>]
        >]
     | C.AVar (id,_,exp_named_subst)
     | C.AConst (id,_,exp_named_subst)
     | C.AMutInd (id,_,_,exp_named_subst)
     | C.AMutConstruct (id,_,_,_,exp_named_subst) ->
        [< print_ann i2a id ;
           List.fold_right
            (fun (_,x) i -> [< aux x ; i >])
            exp_named_subst [<>]
        >] 
     | C.AMutCase (id,_,_,ty,te,patterns) ->
        [< print_ann i2a id ;
           aux ty ;
           aux te ;
           List.fold_right
            (fun x i -> [< aux x ; i>])
            patterns [<>]
        >]
     | C.AFix (id,_,funs) ->
        [< print_ann i2a id ;
           List.fold_right
            (fun (_,_,_,ti,bi) i -> [< aux ti ; aux bi ; i >]) funs [<>]
        >]
     | C.ACoFix (id,no,funs) ->
        [< print_ann i2a id ;
           List.fold_right
            (fun (_,_,ti,bi) i -> [< aux ti ; aux bi ; i >]) funs [<>]
        >]
 in
  aux
;;

let print_mutual_inductive_type i2a (_,_,_,arity,constructors) =
 [< print_term i2a arity ;
    List.fold_right
     (fun (name,ty) i -> [< print_term i2a ty ; i >]) constructors [<>]
 >]
;;

let pp_annotation obj i2a curi =
 let module C = Cic in
 let module X = Xml in
  [< X.xml_cdata "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n" ;
     X.xml_cdata ("<!DOCTYPE Annotations SYSTEM \"" ^ dtdname ^ "\">\n\n") ;
     X.xml_nempty "Annotations"
      ["of", UriManager.string_of_uri (UriManager.cicuri_of_uri curi)]
      begin
       match obj with
         C.AConstant (xid, xidobj, _, te, ty, _) ->
          [< print_ann i2a xid ;
             (match xidobj,te with
                 Some xidobj, Some te ->
                  [< print_ann i2a xidobj ;
                     print_term i2a te
                  >]
               | None, None -> [<>]
               | _,_ -> assert false
             ) ;
             print_term i2a ty
          >]
       | C.AVariable (xid, _, bo, ty,_) ->
          [< print_ann i2a xid ;
             (match bo with
                 None -> [<>]
               | Some bo -> print_term i2a bo
             ) ;
             print_term i2a ty
          >]
       | C.ACurrentProof (xid, xidobj, _, conjs, bo, ty,_) ->
          [< print_ann i2a xid ;
             print_ann i2a xidobj ;
             List.fold_right
              (fun (cid, _, context, t) i ->
                [< print_ann i2a cid ;
                   List.fold_right
		    (fun (hid,context_entry) i -> 
		      [<print_ann i2a hid ;
                        (match context_entry with
			    Some (_,C.ADecl at) -> print_term i2a at
		          | Some (_,C.ADef at) -> print_term i2a at
		          | None -> [< >]
                        ) ; i
                       >]
		    ) context [< >];
		   print_term i2a t ; i
                >]
              ) conjs [<>] ;
             print_term i2a bo ;
             print_term i2a ty
          >]
       | C.AInductiveDefinition (xid, tys, params, paramsno) ->
          [< print_ann i2a xid ;
             List.fold_right
              (fun x i -> [< print_mutual_inductive_type i2a x ; i >])
              tys [< >]
          >]
      end
  >]
;;