A_syntax.sprut

/*
   Copyright (C) 1997-2016 Vladimir Makarov.

   Written by Vladimir Makarov <vmakarov@gcc.gnu.org>

   This file is part of the tool SPRUT.

   This 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, or (at your option)
   any later version.

   This software 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 GNU CC; see the file COPYING.  If not, write to the Free
   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.

*/

%extend A_base
%%
unary
%skeleton
    operand : expr
;
binary
%skeleton
    left, right : expr
;
%abstract
expr :: node
;
%abstract
unary :: expr
;
%abstract
binary :: expr
;
plus_op :: binary
;
mult_op :: binary
;
neg_op :: unary
;
%abstract
stat :: node
%other
    next_stat : %double stat
;
assign :: stat
%skeleton
    var : ident
    expr : expr
;
if_stat, while_stat :: stat
%skeleton
    cond : expr
    stat : stat
;