1 files changed, 0 insertions, 78 deletions
diff --git a/parser.hs b/parser.hs
deleted file mode 100644
index 7929c26..0000000
--- a/parser.hs
+++ /dev/null
@@ -1,78 +0,0 @@
-module Parser where
-
-import Control.Applicative
-import Control.Monad
-import Data.Char
-import Numeric.Natural
-
-
-newtype Parser a = Parser (String -> Maybe (a, String))
-
-parse :: Parser a -> String -> Maybe (a, String)
-parse (Parser p) input = p input
-
-instance Functor Parser where
-    -- fmap :: (a -> b) -> Parser a -> Parser b
-    fmap f (Parser p) = Parser new_p
-        where new_p s = do
-                (x, s') <- p s
-                return (f x, s')
-
-instance Applicative Parser where
-    -- pure :: a -> Parser a
-    pure x = Parser (\s -> Just (x, s))
-    -- (<*>) :: Parser (a -> b) -> Parser a -> Parser b
-    (Parser p1) <*> (Parser p2) = Parser new_p
-        where new_p s = do
-                (f, s') <- p1 s
-                (x, s'') <- p2 s'
-                return (f x, s'')
-
-instance Alternative Parser where
-    -- empty :: Parser a
-    empty = Parser (\_ -> Nothing)
-    -- (<|>) :: Parser a -> Parser a -> Parser a
-    (Parser p1) <|> (Parser p2) = Parser new_p
-        where new_p s = p1 s <|> p2 s
-
-
-charP :: Char -> Parser Char
-charP x = Parser p
-    where p ""     = Nothing
-          p (c:cs) = if c == x then Just (c, cs)
-                               else Nothing
-
-digitsP :: Parser String
-digitsP = Parser (\s -> Just $ span isDigit s)
-
-sepBy :: Parser a -> Parser b -> Parser [a]
-sepBy x sep = ((:) <$> x <*> many (sep *> x)) <|> pure []
-
-
--- 1 * X^0 + 2 * X^1 + 1 * 3 * X^2 = 0
-data Equation = Equation { left :: Polynomial, right :: Polynomial } deriving (Show)
-type Polynomial = [Term]
-data Term = Term { coefficient :: Float, exponent :: Natural } deriving (Show)
-
-coefficientP :: Parser Float
-coefficientP = read <$> (floatP <|> digitsP)
-    where floatP = (\i _ f -> (i ++ "." ++ f))
-                        <$> digitsP <*> charP '.' <*> digitsP
-
-exponentP :: Parser Natural
-exponentP = read <$> digitsP
-
-termP :: Parser Term
-termP = (\coef _ exp -> Term coef exp)
-         <$> coefficientP
-         <*> (charP '*' *> charP 'X' *> charP '^')
-         <*> exponentP
-
-polynomialP :: Parser Polynomial
-polynomialP = sepBy termP (charP '+')
-
-equationP :: Parser Equation
-equationP = (\l _ r -> Equation l r)
-             <$> polynomialP
-             <*> charP '='
-             <*> polynomialP