%%% $Id: Grammars.sdf 17765 2006-02-13 12:54:52Z jurgenv $
                    
module languages/sdf2/syntax/Grammars

imports basic/Comments

exports
  sorts Grammar
  context-free syntax    
    "(/)"                          -> Grammar  {cons("empty-grammar")}
    "left":Grammar "right":Grammar -> Grammar  {assoc,cons("conc-grammars")}
    "(" Grammar ")"                -> Grammar  {bracket}

