From ebd98056ce9d478f0aca68d752a49d87f7431ec9 Mon Sep 17 00:00:00 2001
From: krasimir <krasimir@chalmers.se>
Date: Tue, 28 Oct 2008 13:57:10 +0000
Subject: binary serialization for PGF

---
 src/PGF/Raw/Parse.hs | 101 ---------------------------------------------------
 1 file changed, 101 deletions(-)
 delete mode 100644 src/PGF/Raw/Parse.hs

(limited to 'src/PGF/Raw/Parse.hs')

diff --git a/src/PGF/Raw/Parse.hs b/src/PGF/Raw/Parse.hs
deleted file mode 100644
index 671183ba4..000000000
--- a/src/PGF/Raw/Parse.hs
+++ /dev/null
@@ -1,101 +0,0 @@
-module PGF.Raw.Parse (parseGrammar) where
-
-import PGF.CId
-import PGF.Raw.Abstract
-
-import Control.Monad
-import Data.Char
-import qualified Data.ByteString.Char8 as BS
-
-parseGrammar :: String -> IO Grammar
-parseGrammar s = case runP pGrammar s of
-                   Just (x,"") -> return x
-                   _           -> fail "Parse error"
-
-pGrammar :: P Grammar
-pGrammar = liftM Grm pTerms
-
-pTerms :: P [RExp]
-pTerms = liftM2 (:) (pTerm 1) pTerms <++ (skipSpaces >> return [])
-
-pTerm :: Int -> P RExp
-pTerm n = skipSpaces >> (pParen <++ pApp <++ pNum <++ pStr <++ pMeta)
-  where pParen = between (char '(') (char ')') (pTerm 0)
-        pApp = liftM2 App pIdent (if n == 0 then pTerms else return [])
-        pStr = char '"' >> liftM AStr (manyTill (pEsc <++ get) (char '"'))
-        pEsc = char '\\' >> get
-        pNum = do x <- munch1 isDigit
-                  ((char '.' >> munch1 isDigit >>= \y -> return (AFlt (read (x++"."++y))))
-                   <++
-                   return (AInt (read x)))
-        pMeta = char '?' >> return AMet
-        pIdent = liftM2 (:) (satisfy isIdentFirst) (munch isIdentRest)
-        isIdentFirst c = c == '_' || isAlpha c
-        isIdentRest c = c == '_' || c == '\'' || isAlphaNum c
-
--- Parser combinators with only left-biased choice
-
-newtype P a = P { runP :: String -> Maybe (a,String) }
-
-instance Monad P where
-    return x = P (\ts -> Just (x,ts))
-    P p >>= f = P (\ts -> p ts >>= \ (x,ts') -> runP (f x) ts')
-    fail _ = pfail
-
-instance MonadPlus P where
-    mzero = pfail
-    mplus = (<++)
-
-
-get :: P Char
-get = P (\ts -> case ts of
-                  [] -> Nothing
-                  c:cs -> Just (c,cs))
-
-look :: P String
-look = P (\ts -> Just (ts,ts))
-
-(<++) :: P a -> P a -> P a
-P p <++ P q = P (\ts -> p ts `mplus` q ts)
-
-pfail :: P a
-pfail = P (\ts -> Nothing)
-
-satisfy :: (Char -> Bool) -> P Char
-satisfy p = do c <- get
-               if p c then return c else pfail
-
-char :: Char -> P Char
-char c = satisfy (c==)
-
-string :: String -> P String
-string this = look >>= scan this
-    where
-      scan []     _               = return this
-      scan (x:xs) (y:ys) | x == y = get >> scan xs ys
-      scan _      _               = pfail
-
-skipSpaces :: P ()
-skipSpaces = look >>= skip
-    where
-      skip (c:s) | isSpace c = get >> skip s
-      skip _                 = return ()
-
-manyTill :: P a -> P end -> P [a]
-manyTill p end = scan
-  where scan = (end >> return []) <++ liftM2 (:) p scan
-
-munch :: (Char -> Bool) -> P String
-munch p = munch1 p <++ return []
-
-munch1 :: (Char -> Bool) -> P String
-munch1 p = liftM2 (:) (satisfy p) (munch p)
-
-choice :: [P a] -> P a
-choice = msum
-
-between :: P open -> P close -> P a -> P a
-between open close p = do open
-                          x <- p
-                          close
-                          return x
-- 
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