X-Git-Url: http://git.cielonegro.org/gitweb.cgi?a=blobdiff_plain;f=Network%2FHTTP%2FLucu%2FParser.hs;h=bbe16a3d80b8bd3d4da6f2263fbe995f9cf3fd75;hb=e53a2f3202f763e844de725712f1bf26b82cd41f;hp=f2e4be337abdc375503ec4761385a2222a6fbedb;hpb=ba87ca171f0a058f501655ffa6f6e845f2f800a6;p=Lucu.git

diff --git a/Network/HTTP/Lucu/Parser.hs b/Network/HTTP/Lucu/Parser.hs
index f2e4be3..bbe16a3 100644
--- a/Network/HTTP/Lucu/Parser.hs
+++ b/Network/HTTP/Lucu/Parser.hs
@@ -93,20 +93,20 @@ instance Monad Parser where
 failP :: Parser a
 failP = fail undefined
 
--- |@'parse' p bstr@ parses @bstr@ with @p@ and returns @(result,
--- remaining)@.
-parse :: Parser a -> LazyByteString -> (ParserResult a, LazyByteString)
+-- |@'parse' p bstr@ parses @bstr@ with @p@ and returns @(# result,
+-- remaining #)@.
+parse :: Parser a -> LazyByteString -> (# ParserResult a, LazyByteString #)
 parse p input -- input は lazy である必要有り。
     = p `seq`
       let (result, state') = runState (runParser p) (PST input True)
       in
-        result `seq` (result, pstInput state') -- pstInput state' も lazy である必要有り。
+        result `seq` (# result, pstInput state' #) -- pstInput state' も lazy である必要有り。
 
 -- |@'parseStr' p str@ packs @str@ and parses it.
-parseStr :: Parser a -> String -> (ParserResult a, LazyByteString)
+parseStr :: Parser a -> String -> (# ParserResult a, LazyByteString #)
 parseStr p input
     = p `seq` -- input は lazy である必要有り。
-      parse p $! B.pack input
+      parse p (B.pack input)
 
 
 anyChar :: Parser Char
@@ -144,7 +144,7 @@ allowEOF f = f `seq`
 satisfy :: (Char -> Bool) -> Parser Char
 satisfy f = f `seq`
             do c <- anyChar
-               if f c then
+               if f $! c then
                    return c
                  else
                    failP
@@ -167,7 +167,7 @@ infixr 0 <|>
 (<|>) :: Parser a -> Parser a -> Parser a
 f <|> g
     = f `seq` g `seq`
-      Parser $! do saved <- get -- 状態を保存
+      Parser $! do saved  <- get -- 状態を保存
                    result <- runParser f
                    case result of
                      Success a    -> return $! Success a
@@ -185,8 +185,17 @@ oneOf = foldl (<|>) failP . map char
 
 
 notFollowedBy :: Parser a -> Parser ()
-notFollowedBy p = p `seq`
-                  (p >> failP) <|> return ()
+notFollowedBy p
+    = p `seq`
+      Parser $! do saved  <- get -- 状態を保存
+                   result <- runParser p
+                   case result of
+                     Success a    -> do put saved -- 状態を復歸
+                                        return IllegalInput
+                     IllegalInput -> do put saved -- 状態を復歸
+                                        return $! Success ()
+                     ReachedEOF   -> do put saved -- 状態を復歸
+                                        return $! Success ()
 
 
 digit :: Parser Char