class Rexical::Generator

def parse_rule(st)
  st.strip!
  return  if st.size == 0 or st[0,1] == '#'
  ss  =  StringScanner.new(st)
  ss.scan(/\s+/)
  rule_state  =  ss.scan(/\:\S+/)
  ss.scan(/\s+/)
  rule_expr  =  ss.scan(/\S+/)
  ss.scan(/\s+/)
  [rule_state, rule_expr, ss.post_match]
end