(* 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/.
 *)

(**************************************************************************)
(*                                                                        *)
(*                           PROJECT HELM                                 *)
(*                                                                        *)
(*                Andrea Asperti <asperti@cs.unibo.it>                    *)
(*                             28/6/2003                                   *)
(*                                                                        *)
(**************************************************************************)

module C2P = Cexpr2pres;;
module P = Mpresentation;;

let binary f =
 function
    [a;b] -> f a b
  | _ -> assert false
;;

let unary f =
 function
    [a] -> f a
  | _ -> assert false
;;

let init
 ~(cexpr2pres:
   ?priority:int ->
   ?assoc:bool ->
   ?tail:Mpresentation.mpres list ->
   Content_expressions.cexpr -> 
   Mpresentation.mpres)
 ~(cexpr2pres_charcount:
   ?priority:int ->
   ?assoc:bool ->
   ?tail:Mpresentation.mpres list ->
   Content_expressions.cexpr -> 
   Mpresentation.mpres)
=

(* arrow *)
Hashtbl.add C2P.symbol_table "arrow" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 5) || (priority = 5 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:5 ~assoc:false ~tail:[] a)
         (cexpr2pres ~priority:5 ~assoc:true 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2192))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:5 ~assoc:false ~tail:[] a)
         (cexpr2pres ~priority:5 ~assoc:true ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2192))));

Hashtbl.add C2P.symbol_table_charcount "arrow" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:false ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:true 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2192))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:5 ~assoc:false ~tail:[] a)
         (cexpr2pres_charcount ~priority:5 ~assoc:true ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2192))));

(* eq *)
Hashtbl.add C2P.symbol_table "eq" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"="))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"="))));

Hashtbl.add C2P.symbol_table_charcount "eq" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"="))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"="))));

(* and *)
Hashtbl.add C2P.symbol_table "and" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 20) || (priority = 20 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:20 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:20 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2227))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:20 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:20 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2227))));

Hashtbl.add C2P.symbol_table_charcount "and" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 20) || (priority = 20 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:20 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:20 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2227))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:20 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:20 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2227))));

(* or *)
Hashtbl.add C2P.symbol_table "or" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 10) || (priority = 10 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:10 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:10 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2228))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:10 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:10 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2228))));

Hashtbl.add C2P.symbol_table_charcount "or" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 10) || (priority = 10 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:10 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:10 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2228))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:10 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:10 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2228))));

(* iff *)
Hashtbl.add C2P.symbol_table "iff" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 5) || (priority = 5 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:5 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:5 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x21D4))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:5 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:5 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x21D4))));

Hashtbl.add C2P.symbol_table_charcount "iff" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 5) || (priority = 5 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:5 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:5 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x21D4))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:5 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:5 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x21D4))));

(* not *)
Hashtbl.add C2P.symbol_table "not" (unary
  (fun a ~priority ~assoc ~tail attr sattr ->
     P.Mrow([],[
       P.Mtext([],"(");P.Mo([],Netconversion.ustring_of_uchar `Enc_utf8 0xAC);
       cexpr2pres a;P.Mtext([],")")])));

(* leq *)
Hashtbl.add C2P.symbol_table "leq" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2264))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2264))));

Hashtbl.add C2P.symbol_table_charcount "leq" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2264))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2264))));

(* lt *)
Hashtbl.add C2P.symbol_table "lt" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"&lt;"))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"&lt;"))));

Hashtbl.add C2P.symbol_table_charcount "lt" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"&lt;"))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2265))));

(* geq *)
Hashtbl.add C2P.symbol_table "geq" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2265))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2265))));

Hashtbl.add C2P.symbol_table_charcount "geq" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2265))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,Netconversion.ustring_of_uchar `Enc_utf8 0x2265))));

(* gt *)
Hashtbl.add C2P.symbol_table "gt" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,">"))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,">"))));

Hashtbl.add C2P.symbol_table_charcount "gt" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 40) || (priority = 40 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,">"))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:40 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:40 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,">"))));

(* plus *)
Hashtbl.add C2P.symbol_table "plus" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 60) || (priority = 60 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:60 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"+"))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:60 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"+"))));

Hashtbl.add C2P.symbol_table_charcount "plus" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 60) || (priority = 60 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:60 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"+"))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:60 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"+"))));

(* times *)
Hashtbl.add C2P.symbol_table "times" (binary 
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 70) || (priority = 70 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:70 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:70 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"*"))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:70 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:70 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"*"))));

Hashtbl.add C2P.symbol_table_charcount "times" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 70) || (priority = 70 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:70 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:70 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"*"))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:70 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:70 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"*"))));

(* minus *)
Hashtbl.add C2P.symbol_table "minus" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 60) || (priority = 60 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:60 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"-"))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:60 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"-"))));

Hashtbl.add C2P.symbol_table_charcount "minus" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 60) || (priority = 60 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:60 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"-"))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:60 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"-"))));

(* div *)
Hashtbl.add C2P.symbol_table "div" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 60) || (priority = 60 && assoc) then
       P.row_with_brackets aattr
         (cexpr2pres ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:60 ~assoc:false 
            ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"/"))
     else 
       P.row_without_brackets aattr
         (cexpr2pres ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres ~priority:60 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"/"))));

Hashtbl.add C2P.symbol_table_charcount "div" (binary
  (fun a b ~priority ~assoc ~tail aattr sattr ->
     if (priority > 60) || (priority = 60 && assoc) then
       P.two_rows_table_with_brackets aattr
         (cexpr2pres_charcount ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:60 ~assoc:false 
           ~tail:(P.Mtext([],")")::tail) b)
         (P.Mo(sattr,"/"))
     else
       P.two_rows_table_without_brackets aattr
         (cexpr2pres_charcount ~priority:60 ~assoc:true ~tail:[] a)
         (cexpr2pres_charcount ~priority:60 ~assoc:false ~tail:tail b)
         (P.Mo(sattr,"/"))))
;;