instructionFile = instructionLine `sepEndBy` newline
--- instructionLine = choice [cpyL, incL, decL, jnzL]
instructionLine = incL <|> decL <|> cpyL <|> jnzL <|> tglL
--- incL = incify <$> (string "inc" *> spaces *> (oneOf "abcd"))
--- where incify r = Inc (Register r)
-incL = (Inc . Register) <$> (string "inc" *> spaces *> (oneOf "abcd"))
--- decL = decify <$> (string "dec" *> spaces *> (oneOf "abcd"))
--- where decify r = Dec (Register r)
-decL = (Dec . Register) <$> (string "dec" *> spaces *> (oneOf "abcd"))
-cpyL = cpyify <$> (string "cpy" *> spaces *> ((Literal <$> int) <|> ((Register . head) <$> (many1 letter))))
- <*> (spaces *> (oneOf "abcd"))
- where cpyify s r = Cpy s (Register r)
-jnzL = jnzify <$> (string "jnz" *> spaces *> ((Literal <$> int) <|> ((Register . head) <$> (many1 letter))))
- <*> (spaces *> ((Literal <$> int) <|> ((Register . head) <$> (many1 letter))))
- where jnzify r o = Jnz r o
-tglL = Tgl <$> (string "tgl" *> spaces *> ((Literal <$> int) <|> ((Register . head) <$> (many1 letter))))
- -- where tglify r = Tgl r
-
-
--- readLocation :: Int -> Location
--- readLocation l = Literal l
-
--- readLocation :: String -> Location
--- readLocation l
--- | all (isDigit) l = Literal (read l)
--- | otherwise = Register (head l)
+incL = Inc <$> (string "inc" *> spaces *> register)
+decL = Dec <$> (string "dec" *> spaces *> register)
+cpyL = Cpy <$> (string "cpy" *> spaces *> location) <*> (spaces *> register)
+jnzL = Jnz <$> (string "jnz" *> spaces *> location) <*> (spaces *> location)
+tglL = Tgl <$> (string "tgl" *> spaces *> location)
+
+location = (Literal <$> int) <|> register
+register = Register <$> (oneOf "abcd")
parseIfile :: String -> Either ParseError [Instruction]
parseIfile input = parse instructionFile "(unknown)" input