content: -- Generated by re2hs
  {-# LANGUAGE RecordWildCards #-}
  -- re2hs $INPUT -o $OUTPUT -i
  {-# LANGUAGE OverloadedStrings #-}
  {-# OPTIONS_GHC -Wno-unused-record-wildcards #-}
  
  import Data.ByteString (ByteString, index)
  
  data State = State {
      _yyinput :: ByteString,
      _yycursor :: Int
  }
  
  
  yy0 :: State -> Bool
  yy0 State{..} =
      let yych = index _yyinput _yycursor in
      let __ = _yycursor + 1 in let _yycursor = __ in
      case yych of
          _c | 0x31 <= _c && _c <= 0x39 ->
              yy2 State{..}
          _c | True ->
              yy1 State{..}
  
  yy1 :: State -> Bool
  yy1 State{..} =
      False
  
  yy2 :: State -> Bool
  yy2 State{..} =
      let yych = index _yyinput _yycursor in
      case yych of
          _c | 0x30 <= _c && _c <= 0x39 ->
              let __ = _yycursor + 1 in let _yycursor = __ in
              yy2 State{..}
          _c | True ->
              yy3 State{..}
  
  yy3 :: State -> Bool
  yy3 State{..} =
      True
  
  lexer :: State -> Bool
  lexer State{..} =
      yy0 State{..}
  
  
  
  main :: IO ()
  main = case lexer State{_yyinput = "1234\0", _yycursor = 0} of
      True -> return ()
      False -> error "lexer failed!"
  