{-# LINE 1 "templates/wrappers.hs" #-}
{-# LINE 1 "templates/wrappers.hs" #-}
{-# LINE 1 "<command-line>" #-}
{-# LINE 1 "templates/wrappers.hs" #-}
-- -----------------------------------------------------------------------------
-- Alex wrapper code.
--
-- This code is in the PUBLIC DOMAIN; you may copy it freely and use
-- it for any purpose whatsoever.

import Control.Applicative (Applicative (..))
import Data.Word (Word8)








import qualified Data.Char
import qualified Data.ByteString          as ByteString
import qualified Data.ByteString.Internal as ByteString
import qualified Data.ByteString.Unsafe   as ByteString

{-# LINE 48 "templates/wrappers.hs" #-}

type Byte = Word8

-- -----------------------------------------------------------------------------
-- The input type

{-# LINE 73 "templates/wrappers.hs" #-}

{-# LINE 93 "templates/wrappers.hs" #-}

{-# LINE 107 "templates/wrappers.hs" #-}


data AlexInput = AlexInput { alexChar :: {-# UNPACK #-}!Char
                           , alexStr  :: {-# UNPACK #-}!ByteString.ByteString }

alexInputPrevChar :: AlexInput -> Char
alexInputPrevChar = alexChar

alexGetByte (AlexInput _ cs)
    | ByteString.null cs = Nothing
    | otherwise          = Just $!  (ByteString.head cs, AlexInput c cs')
    where
        (c,cs') = (ByteString.w2c (ByteString.unsafeHead cs)
                  , ByteString.unsafeTail cs)


-- -----------------------------------------------------------------------------
-- Token positions

-- `Posn' records the location of a token in the input text.  It has three
-- fields: the address (number of chacaters preceding the token), line number
-- and column of a token within the file. `start_pos' gives the position of the
-- start of the file and `eof_pos' a standard encoding for the end of file.
-- `move_pos' calculates the new position after traversing a given character,
-- assuming the usual eight character tab stops.

{-# LINE 145 "templates/wrappers.hs" #-}

-- -----------------------------------------------------------------------------
-- Default monad

{-# LINE 256 "templates/wrappers.hs" #-}


-- -----------------------------------------------------------------------------
-- Monad (with ByteString input)

{-# LINE 347 "templates/wrappers.hs" #-}


-- -----------------------------------------------------------------------------
-- Basic wrapper

{-# LINE 374 "templates/wrappers.hs" #-}


-- -----------------------------------------------------------------------------
-- Basic wrapper, ByteString version

{-# LINE 392 "templates/wrappers.hs" #-}



-- alexScanTokens :: String -> [token]
alexScanTokens str = go (AlexInput '\n' str)
  where go inp@(AlexInput _ str) =
          case alexScan inp 0 of
                AlexEOF -> []
                AlexError _ -> error "lexical error"
                AlexSkip  inp' len     -> go inp'
                AlexToken inp'@(AlexInput _ str') _ act -> act (ByteString.unsafeTake len str) : go inp'
                 where len = ByteString.length str - ByteString.length str'




-- -----------------------------------------------------------------------------
-- Posn wrapper

-- Adds text positions to the basic model.

{-# LINE 423 "templates/wrappers.hs" #-}


-- -----------------------------------------------------------------------------
-- Posn wrapper, ByteString version

{-# LINE 438 "templates/wrappers.hs" #-}


-- -----------------------------------------------------------------------------
-- GScan wrapper

-- For compatibility with previous versions of Alex, and because we can.