(* Copyright (c) 1998 by Lucent Technologies *)

structure AstExt = struct

      type binopExt = unit
      type unopExt = unit
      type ('expression, 'statement, 'binop, 'unop) expressionExt = unit
      type ('expression, 'statement, 'binop, 'unop) statementExt = unit
      type ('expression, 'statement, 'binop, 'unop) externalDeclExt = unit
       
end
