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Wrap all parsers and enable parsing problem

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Bartłomiej Przemysław Pluta
2021-11-04 10:05:29 +01:00
parent cf66dbc928
commit 759f0b5c00
1 changed files with 4 additions and 8 deletions
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8
app/Assembler.hs
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@@ -131,6 +131,7 @@ tokenize input = tokens >>= (\t -> Right $ filter tokenFilter t)
tokenFilter :: Token -> Bool tokenFilter :: Token -> Bool
tokenFilter (WhiteSpace) = False tokenFilter (WhiteSpace) = False
tokenFilter (Comment _) = False tokenFilter (Comment _) = False
tokenFilter (NewLine) = False
tokenFilter _ = True tokenFilter _ = True
tokenizers :: Tokenizer tokenizers :: Tokenizer
@@ -258,11 +259,6 @@ parseAll (p:ps) tokens = do
parse :: [Token] -> Either String [AST] parse :: [Token] -> Either String [AST]
parse [] = Right [] parse [] = Right []
parse tokens = case parsers tokens of parse tokens = case parseLine tokens of
(Just (ParseResult ast consumed)) -> parse (drop consumed tokens) >>= (\rest -> return $ ast : rest) (Just (ParseResult ast consumed)) -> parse (drop consumed tokens) >>= (\rest -> return $ ast : rest)
Nothing -> Left $ "Unexpected token: " ++ (show . head) tokens Nothing -> Left $ "Unexpected token: " ++ (show . head) tokens
parsers :: Parser
parsers = parseAny
[ parseLine
]