(*
    Copyright (C) 2003-19 Richard Bornat & Bernard Sufrin
     
        richard@bornat.me.uk
        sufrin@comlab.ox.ac.uk

    This file is part of the jape proof engine, which is part of jape.

    Jape 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.

    Jape 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 jape; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    (or look at http://www.gnu.org).

*)

type idclass = Idclass.idclass 

type associativity =
  LeftAssoc | RightAssoc | AssocAssoc | TupleAssoc | CommAssocAssoc

type symbol =
    ID       of (string * idclass option)
  | UNKNOWN  of (string * idclass option)
  | NUM      of string
  | STRING   of string
  | BRA      of string
  | SEP      of string
  | KET      of string
  | SUBSTBRA
  | SUBSTKET
  | SUBSTSEP
  | EOF
  (* If we are to have syntaxes within syntaxes -- e.g. hoare.jt subsyntaxing
     natural deduction -- then operators can't have priorities inside them.
     Nor even associativities. Oh bottoms.
     Curriedness (INFIX/INFIXC) survives for the moment, cos I've forgotten 
     what it's for.
   *)
  | PREFIX   of string
  | POSTFIX  of string
  | INFIX    of string
  | INFIXC   of string
  | LEFTFIX  of string
  | MIDFIX   of string
  | RIGHTFIX of string
  | STILE    of string
  | SHYID    of string
