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Lexer.hs
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Lexer.hs
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{-# LANGUAGE CPP #-}
{-# LINE 1 "Lexer.x" #-}
module Lexer (Token(..), AlexPosn(..), alexScanTokens, token_posn) where
#if __GLASGOW_HASKELL__ >= 603
#include "ghcconfig.h"
#elif defined(__GLASGOW_HASKELL__)
#include "config.h"
#endif
#if __GLASGOW_HASKELL__ >= 503
import Data.Array
import Data.Char (ord)
import Data.Array.Base (unsafeAt)
#else
import Array
import Char (ord)
#endif
{-# LINE 1 "templates/wrappers.hs" #-}
{-# LINE 1 "templates/wrappers.hs" #-}
{-# LINE 1 "<built-in>" #-}
{-# 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 Data.Word (Word8)
{-# LINE 22 "templates/wrappers.hs" #-}
import qualified Data.Bits
-- | Encode a Haskell String to a list of Word8 values, in UTF8 format.
utf8Encode :: Char -> [Word8]
utf8Encode = map fromIntegral . go . ord
where
go oc
| oc <= 0x7f = [oc]
| oc <= 0x7ff = [ 0xc0 + (oc `Data.Bits.shiftR` 6)
, 0x80 + oc Data.Bits..&. 0x3f
]
| oc <= 0xffff = [ 0xe0 + (oc `Data.Bits.shiftR` 12)
, 0x80 + ((oc `Data.Bits.shiftR` 6) Data.Bits..&. 0x3f)
, 0x80 + oc Data.Bits..&. 0x3f
]
| otherwise = [ 0xf0 + (oc `Data.Bits.shiftR` 18)
, 0x80 + ((oc `Data.Bits.shiftR` 12) Data.Bits..&. 0x3f)
, 0x80 + ((oc `Data.Bits.shiftR` 6) Data.Bits..&. 0x3f)
, 0x80 + oc Data.Bits..&. 0x3f
]
type Byte = Word8
-- -----------------------------------------------------------------------------
-- The input type
type AlexInput = (AlexPosn, -- current position,
Char, -- previous char
[Byte], -- pending bytes on current char
String) -- current input string
ignorePendingBytes :: AlexInput -> AlexInput
ignorePendingBytes (p,c,ps,s) = (p,c,[],s)
alexInputPrevChar :: AlexInput -> Char
alexInputPrevChar (p,c,bs,s) = c
alexGetByte :: AlexInput -> Maybe (Byte,AlexInput)
alexGetByte (p,c,(b:bs),s) = Just (b,(p,c,bs,s))
alexGetByte (p,c,[],[]) = Nothing
alexGetByte (p,_,[],(c:s)) = let p' = alexMove p c
(b:bs) = utf8Encode c
in p' `seq` Just (b, (p', c, bs, s))
{-# LINE 89 "templates/wrappers.hs" #-}
{-# LINE 103 "templates/wrappers.hs" #-}
{-# LINE 118 "templates/wrappers.hs" #-}
-- -----------------------------------------------------------------------------
-- 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.
data AlexPosn = AlexPn !Int !Int !Int
deriving (Eq,Show)
alexStartPos :: AlexPosn
alexStartPos = AlexPn 0 1 1
alexMove :: AlexPosn -> Char -> AlexPosn
alexMove (AlexPn a l c) '\t' = AlexPn (a+1) l (((c+7) `div` 8)*8+1)
alexMove (AlexPn a l c) '\n' = AlexPn (a+1) (l+1) 1
alexMove (AlexPn a l c) _ = AlexPn (a+1) l (c+1)
-- -----------------------------------------------------------------------------
-- Default monad
{-# LINE 231 "templates/wrappers.hs" #-}
-- -----------------------------------------------------------------------------
-- Monad (with ByteString input)
{-# LINE 320 "templates/wrappers.hs" #-}
-- -----------------------------------------------------------------------------
-- Basic wrapper
{-# LINE 347 "templates/wrappers.hs" #-}
-- -----------------------------------------------------------------------------
-- Basic wrapper, ByteString version
{-# LINE 365 "templates/wrappers.hs" #-}
{-# LINE 378 "templates/wrappers.hs" #-}
-- -----------------------------------------------------------------------------
-- Posn wrapper
-- Adds text positions to the basic model.
--alexScanTokens :: String -> [token]
alexScanTokens str = go (alexStartPos,'\n',[],str)
where go inp@(pos,_,_,str) =
case alexScan inp 0 of
AlexEOF -> []
AlexError ((AlexPn _ line column),_,_,_) -> error $ "lexical error at " ++ (show line) ++ " line, " ++ (show column) ++ " column"
AlexSkip inp' len -> go inp'
AlexToken inp' len act -> act pos (take len str) : go inp'
-- -----------------------------------------------------------------------------
-- Posn wrapper, ByteString version
{-# LINE 410 "templates/wrappers.hs" #-}
-- -----------------------------------------------------------------------------
-- GScan wrapper
-- For compatibility with previous versions of Alex, and because we can.
alex_base :: Array Int Int
alex_base = listArray (0,33) [-8,-55,-76,0,37,0,165,293,-31,549,485,0,-1,731,703,948,0,0,0,0,0,0,0,0,0,-35,-22,0,1032,1116,1200,1284,1368,1452]
alex_table :: Array Int Int
alex_table = listArray (0,1707) [0,12,12,12,12,12,16,24,12,12,12,12,12,25,25,25,25,25,25,25,25,25,25,13,12,0,0,0,0,0,8,12,19,20,27,27,0,26,0,27,25,25,25,25,25,25,25,25,25,25,1,21,22,27,23,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,17,0,18,0,0,0,31,31,31,29,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,32,31,31,31,10,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,2,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,7,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,9,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,9,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,10,7,3,3,3,3,3,3,3,3,3,3,3,3,3,3,2,6,5,5,5,4,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,14,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,15,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,31,31,31,31,33,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,31,31,31,30,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,31,0,31,31,31,31,31,31,31,31,31,31,31,28,31,31,31,31,31,31,31,31,31,31,31,31,31,31,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
alex_check :: Array Int Int
alex_check = listArray (0,1707) [-1,9,10,11,12,13,61,38,9,10,11,12,13,48,49,50,51,52,53,54,55,56,57,45,32,-1,-1,-1,-1,-1,38,32,40,41,42,43,-1,45,-1,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,-1,93,-1,-1,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,10,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,39,-1,-1,-1,-1,-1,-1,-1,-1,48,49,50,51,52,53,54,55,56,57,-1,-1,-1,-1,-1,-1,-1,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,-1,-1,-1,-1,95,-1,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1]
alex_deflt :: Array Int Int
alex_deflt = listArray (0,33) [-1,-1,11,11,3,3,-1,-1,-1,13,13,13,-1,13,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1]
alex_accept = listArray (0::Int,33) [AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccNone,AlexAccSkip,AlexAccSkip,AlexAcc (alex_action_2),AlexAcc (alex_action_3),AlexAcc (alex_action_4),AlexAcc (alex_action_5),AlexAcc (alex_action_6),AlexAcc (alex_action_7),AlexAcc (alex_action_8),AlexAcc (alex_action_9),AlexAcc (alex_action_10),AlexAcc (alex_action_11),AlexAcc (alex_action_12),AlexAcc (alex_action_13),AlexAcc (alex_action_14),AlexAcc (alex_action_14),AlexAcc (alex_action_15),AlexAcc (alex_action_15),AlexAcc (alex_action_15),AlexAcc (alex_action_15),AlexAcc (alex_action_15),AlexAcc (alex_action_15)]
{-# LINE 31 "Lexer.x" #-}
-- Each right-hand side has type :: AlexPosn -> String -> Token
-- Some action helpers:
tok f p s = f p s
-- The token type:
data Token =
While AlexPosn |
Do AlexPosn |
BracketOpen AlexPosn |
BracketClose AlexPosn |
ParensOpen AlexPosn |
ParensClose AlexPosn |
Semicolon AlexPosn |
Assign AlexPosn |
Sym AlexPosn Char |
Var AlexPosn String |
Int AlexPosn Int |
TLT AlexPosn |
TGT AlexPosn |
TAND AlexPosn
deriving (Eq,Show)
token_posn (While p) = p
token_posn (Do p) = p
token_posn (Assign p) = p
token_posn (Sym p _) = p
token_posn (Var p _) = p
token_posn (Int p _) = p
token_posn (Semicolon p) = p
token_posn (BracketOpen p) = p
token_posn (BracketClose p) = p
token_posn (ParensOpen p) = p
token_posn (ParensClose p) = p
token_posn (TLT p) = p
token_posn (TGT p) = p
token_posn (TAND p) = p
alex_action_2 = tok (\p s -> While p)
alex_action_3 = tok (\p s -> Do p)
alex_action_4 = tok (\p s -> Assign p)
alex_action_5 = tok (\p s -> BracketOpen p)
alex_action_6 = tok (\p s -> BracketClose p)
alex_action_7 = tok (\p s -> ParensOpen p)
alex_action_8 = tok (\p s -> ParensClose p)
alex_action_9 = tok (\p s -> Semicolon p)
alex_action_10 = tok (\p s -> TLT p)
alex_action_11 = tok (\p s -> TGT p)
alex_action_12 = tok (\p s -> TAND p)
alex_action_13 = tok (\p s -> Int p (read s))
alex_action_14 = tok (\p s -> Sym p (head s))
alex_action_15 = tok (\p s -> Var p s)
{-# LINE 1 "templates/GenericTemplate.hs" #-}
{-# LINE 1 "templates/GenericTemplate.hs" #-}
{-# LINE 1 "<built-in>" #-}
{-# LINE 1 "<command-line>" #-}
{-# LINE 1 "templates/GenericTemplate.hs" #-}
-- -----------------------------------------------------------------------------
-- ALEX TEMPLATE
--
-- This code is in the PUBLIC DOMAIN; you may copy it freely and use
-- it for any purpose whatsoever.
-- -----------------------------------------------------------------------------
-- INTERNALS and main scanner engine
{-# LINE 35 "templates/GenericTemplate.hs" #-}
{-# LINE 45 "templates/GenericTemplate.hs" #-}
{-# LINE 66 "templates/GenericTemplate.hs" #-}
alexIndexInt16OffAddr arr off = arr ! off
{-# LINE 87 "templates/GenericTemplate.hs" #-}
alexIndexInt32OffAddr arr off = arr ! off
{-# LINE 98 "templates/GenericTemplate.hs" #-}
quickIndex arr i = arr ! i
-- -----------------------------------------------------------------------------
-- Main lexing routines
data AlexReturn a
= AlexEOF
| AlexError !AlexInput
| AlexSkip !AlexInput !Int
| AlexToken !AlexInput !Int a
-- alexScan :: AlexInput -> StartCode -> AlexReturn a
alexScan input (sc)
= alexScanUser undefined input (sc)
alexScanUser user input (sc)
= case alex_scan_tkn user input (0) input sc AlexNone of
(AlexNone, input') ->
case alexGetByte input of
Nothing ->
AlexEOF
Just _ ->
AlexError input'
(AlexLastSkip input'' len, _) ->
AlexSkip input'' len
(AlexLastAcc k input''' len, _) ->
AlexToken input''' len k
-- Push the input through the DFA, remembering the most recent accepting
-- state it encountered.
alex_scan_tkn user orig_input len input s last_acc =
input `seq` -- strict in the input
let
new_acc = (check_accs (alex_accept `quickIndex` (s)))
in
new_acc `seq`
case alexGetByte input of
Nothing -> (new_acc, input)
Just (c, new_input) ->
case fromIntegral c of { (ord_c) ->
let
base = alexIndexInt32OffAddr alex_base s
offset = (base + ord_c)
check = alexIndexInt16OffAddr alex_check offset
new_s = if (offset >= (0)) && (check == ord_c)
then alexIndexInt16OffAddr alex_table offset
else alexIndexInt16OffAddr alex_deflt s
in
case new_s of
(-1) -> (new_acc, input)
-- on an error, we want to keep the input *before* the
-- character that failed, not after.
_ -> alex_scan_tkn user orig_input (if c < 0x80 || c >= 0xC0 then (len + (1)) else len)
-- note that the length is increased ONLY if this is the 1st byte in a char encoding)
new_input new_s new_acc
}
where
check_accs (AlexAccNone) = last_acc
check_accs (AlexAcc a ) = AlexLastAcc a input (len)
check_accs (AlexAccSkip) = AlexLastSkip input (len)
check_accs (AlexAccPred a predx rest)
| predx user orig_input (len) input
= AlexLastAcc a input (len)
| otherwise
= check_accs rest
check_accs (AlexAccSkipPred predx rest)
| predx user orig_input (len) input
= AlexLastSkip input (len)
| otherwise
= check_accs rest
data AlexLastAcc a
= AlexNone
| AlexLastAcc a !AlexInput !Int
| AlexLastSkip !AlexInput !Int
instance Functor AlexLastAcc where
fmap f AlexNone = AlexNone
fmap f (AlexLastAcc x y z) = AlexLastAcc (f x) y z
fmap f (AlexLastSkip x y) = AlexLastSkip x y
data AlexAcc a user
= AlexAccNone
| AlexAcc a
| AlexAccSkip
| AlexAccPred a (AlexAccPred user) (AlexAcc a user)
| AlexAccSkipPred (AlexAccPred user) (AlexAcc a user)
type AlexAccPred user = user -> AlexInput -> Int -> AlexInput -> Bool
-- -----------------------------------------------------------------------------
-- Predicates on a rule
alexAndPred p1 p2 user in1 len in2
= p1 user in1 len in2 && p2 user in1 len in2
--alexPrevCharIsPred :: Char -> AlexAccPred _
alexPrevCharIs c _ input _ _ = c == alexInputPrevChar input
alexPrevCharMatches f _ input _ _ = f (alexInputPrevChar input)
--alexPrevCharIsOneOfPred :: Array Char Bool -> AlexAccPred _
alexPrevCharIsOneOf arr _ input _ _ = arr ! alexInputPrevChar input
--alexRightContext :: Int -> AlexAccPred _
alexRightContext (sc) user _ _ input =
case alex_scan_tkn user input (0) input sc AlexNone of
(AlexNone, _) -> False
_ -> True
-- TODO: there's no need to find the longest
-- match when checking the right context, just
-- the first match will do.
-- used by wrappers
iUnbox (i) = i