Reformatting

Now I'm using ormolu instead of brittany for Haskell formatting
now. Figured I should just make all of these big changes at once.

7 files changed, 331 insertions, 334 deletions

diff --git a/Biz/Language/Bs.hs b/Biz/Language/Bs.hs
index a810706..f2d4c9d 100644
--- a/Biz/Language/Bs.hs
+++ b/Biz/Language/Bs.hs
@@ -1,8 +1,9 @@
 -- https://github.com/write-you-a-scheme-v2/scheme
 -- https://github.com/justinethier/husk-scheme
 module Language.Bs
-  ( module X
-  ) where
+  ( module X,
+  )
+where
 
 import Language.Bs.Cli as X
 import Language.Bs.Eval as X
diff --git a/Biz/Language/Bs/Cli.hs b/Biz/Language/Bs/Cli.hs
index 4c48c86..d2ac1e4 100644
--- a/Biz/Language/Bs/Cli.hs
+++ b/Biz/Language/Bs/Cli.hs
@@ -1,8 +1,10 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE NoImplicitPrelude #-}
-module Language.Bs.Cli (
-  run
-) where
+
+module Language.Bs.Cli
+  ( run,
+  )
+where
 
 import Data.String
 import Data.Text.IO as TIO
@@ -17,12 +19,12 @@ import System.Directory
 -- https://github.com/pcapriotti/optparse-applicative
 -- https://hackage.haskell.org/package/optparse-applicative
 
-runScript ::  FilePath -> IO ()
+runScript :: FilePath -> IO ()
 runScript fname = do
   exists <- doesFileExist fname
   if exists
-  then TIO.readFile fname >>= evalFile fname
-  else TIO.putStrLn "File does not exist."
+    then TIO.readFile fname >>= evalFile fname
+    else TIO.putStrLn "File does not exist."
 
 data LineOpts = UseReplLineOpts | RunScriptLineOpts String
 
@@ -30,14 +32,21 @@ parseLineOpts :: Parser LineOpts
 parseLineOpts = runScriptOpt <|> runReplOpt
   where
     runScriptOpt =
-      RunScriptLineOpts <$> strOption (long "script"
-                                       <> short 's'
-                                       <> metavar "SCRIPT"
-                                       <> help "File containing the script you want to run")
+      RunScriptLineOpts
+        <$> strOption
+          ( long "script"
+              <> short 's'
+              <> metavar "SCRIPT"
+              <> help "File containing the script you want to run"
+          )
     runReplOpt =
-      UseReplLineOpts <$ flag' () (long "repl"
-                                   <> short 'r'
-                                   <> help "Run as interavtive read/evaluate/print/loop")
+      UseReplLineOpts
+        <$ flag'
+          ()
+          ( long "repl"
+              <> short 'r'
+              <> help "Run as interavtive read/evaluate/print/loop"
+          )
 
 schemeEntryPoint :: LineOpts -> IO ()
 schemeEntryPoint UseReplLineOpts = mainLoop --repl
@@ -46,7 +55,10 @@ schemeEntryPoint (RunScriptLineOpts script) = runScript script
 run :: IO ()
 run = execParser opts >>= schemeEntryPoint
   where
-    opts = info (helper <*> parseLineOpts)
-      ( fullDesc
-     <> header "Executable binary for Write You A Scheme v2.0"
-     <> progDesc "contains an entry point for both running scripts and repl" )
+    opts =
+      info
+        (helper <*> parseLineOpts)
+        ( fullDesc
+            <> header "Executable binary for Write You A Scheme v2.0"
+            <> progDesc "contains an entry point for both running scripts and repl"
+        )
diff --git a/Biz/Language/Bs/Eval.hs b/Biz/Language/Bs/Eval.hs
index 290170b..1198a3e 100644
--- a/Biz/Language/Bs/Eval.hs
+++ b/Biz/Language/Bs/Eval.hs
@@ -1,19 +1,21 @@
 {-# LANGUAGE FlexibleContexts #-}
-{-# LANGUAGE ScopedTypeVariables #-}
-{-# LANGUAGE RecordWildCards #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE RecordWildCards #-}
+{-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE NoImplicitPrelude #-}
-module Language.Bs.Eval (
-  evalText
-, evalFile
-, runParseTest
-, safeExec
-, runASTinEnv
-, basicEnv
-, fileToEvalForm
-, textToEvalForm
-, getFileContents
-) where
+
+module Language.Bs.Eval
+  ( evalText,
+    evalFile,
+    runParseTest,
+    safeExec,
+    runASTinEnv,
+    basicEnv,
+    fileToEvalForm,
+    textToEvalForm,
+    getFileContents,
+  )
+where
 
 import Control.Exception
 import Control.Monad.Reader
@@ -28,23 +30,25 @@ import Protolude
 import System.Directory
 
 funcEnv :: Map.Map T.Text Expr
-funcEnv = Map.fromList $ primEnv
-  <> [ ("read" , IFun $ IFunc $ unop readFn)
-     , ("parse", IFun $ IFunc $ unop parseFn)
-     , ("eval", IFun $ IFunc $ unop eval)
-     , ("show", IFun $ IFunc $ unop (return . Tape . ppexpr))
-     ]
+funcEnv =
+  Map.fromList $
+    primEnv
+      <> [ ("read", IFun $ IFunc $ unop readFn),
+           ("parse", IFun $ IFunc $ unop parseFn),
+           ("eval", IFun $ IFunc $ unop eval),
+           ("show", IFun $ IFunc $ unop (return . Tape . ppexpr))
+         ]
 
 basicEnv :: Env
 basicEnv = Env Map.empty funcEnv
 
 readFn :: Expr -> Eval Expr
 readFn (Tape txt) = lineToEvalForm txt
-readFn  val       = throw $ TypeMismatch "read expects string, instead got:" val
+readFn val = throw $ TypeMismatch "read expects string, instead got:" val
 
 parseFn :: Expr -> Eval Expr
 parseFn (Tape txt) = either (throw . ParseError . show) return $ readExpr txt
-parseFn val        = throw $ TypeMismatch "parse expects string, instead got:" val
+parseFn val = throw $ TypeMismatch "parse expects string, instead got:" val
 
 safeExec :: IO a -> IO (Either String a)
 safeExec m = do
@@ -63,13 +67,13 @@ runASTinEnv :: Env -> Eval b -> IO b
 runASTinEnv code action = runReaderT (unEval action) code
 
 lineToEvalForm :: T.Text -> Eval Expr
-lineToEvalForm input = either (throw . ParseError . show  )  eval $ readExpr input
+lineToEvalForm input = either (throw . ParseError . show) eval $ readExpr input
 
 evalFile :: FilePath -> T.Text -> IO () -- program file
 evalFile filePath fileExpr = (runASTinEnv basicEnv $ fileToEvalForm filePath fileExpr) >>= print
 
 fileToEvalForm :: FilePath -> T.Text -> Eval Expr
-fileToEvalForm filePath input = either (throw . ParseError . show )  evalBody $ readExprFile filePath input
+fileToEvalForm filePath input = either (throw . ParseError . show) evalBody $ readExprFile filePath input
 
 runParseTest :: T.Text -> T.Text -- for view AST
 runParseTest input = either (T.pack . show) (T.pack . show) $ readExpr input
@@ -77,23 +81,23 @@ runParseTest input = either (T.pack . show) (T.pack . show) $ readExpr input
 getFileContents :: FilePath -> IO T.Text
 getFileContents fname = do
   exists <- doesFileExist fname
-  if exists then TIO.readFile  fname else return "File does not exist."
+  if exists then TIO.readFile fname else return "File does not exist."
 
 textToEvalForm :: T.Text -> Eval Expr
-textToEvalForm input = either (throw . ParseError . show ) evalBody $ readExpr input
+textToEvalForm input = either (throw . ParseError . show) evalBody $ readExpr input
 
 evalText :: T.Text -> IO () --REPL
 evalText textExpr = do
   res <- runASTinEnv basicEnv $ textToEvalForm textExpr
   print res
 
-getVar :: Expr ->  Eval Expr
+getVar :: Expr -> Eval Expr
 getVar (Atom atom) = do
-  Env{..} <- ask
+  Env {..} <- ask
   case Map.lookup atom (Map.union fenv env) of -- lookup, but prefer functions
-      Just x  -> return x
-      Nothing -> throw $ UnboundVar atom
-getVar n = throw $ TypeMismatch  "failure to get variable: " n
+    Just x -> return x
+    Nothing -> throw $ UnboundVar atom
+getVar n = throw $ TypeMismatch "failure to get variable: " n
 
 ensureAtom :: Expr -> Eval Expr
 ensureAtom n@(Atom _) = return n
@@ -106,136 +110,115 @@ extractVar n = throw $ TypeMismatch "expected an atomic value" n
 
 getEven :: [t] -> [t]
 getEven [] = []
-getEven (x:xs) = x : getOdd xs
+getEven (x : xs) = x : getOdd xs
 
 getOdd :: [t] -> [t]
 getOdd [] = []
-getOdd (_:xs) = getEven xs
+getOdd (_ : xs) = getEven xs
 
 applyFunc :: Expr -> [Expr] -> [Expr] -> Eval Expr
 applyFunc expr params args = bindArgsEval params args expr
 
 bindArgsEval :: [Expr] -> [Expr] -> Expr -> Eval Expr
 bindArgsEval params args expr = do
-  Env{..} <- ask
-  let newVars = zipWith (\a b -> (extractVar a,b)) params args
+  Env {..} <- ask
+  let newVars = zipWith (\a b -> (extractVar a, b)) params args
   let (newEnv, newFenv) = Map.partition (not . isFunc) $ Map.fromList newVars
   local (const $ Env (newEnv <> env) (newFenv <> fenv)) $ eval expr
 
 isFunc :: Expr -> Bool
-isFunc (List ((Atom "lambda"):_)) = True
-isFunc _  = False
+isFunc (List ((Atom "lambda") : _)) = True
+isFunc _ = False
 
 eval :: Expr -> Eval Expr
 eval (List [Atom "dumpEnv", x]) = do
-  Env{..} <- ask
+  Env {..} <- ask
   liftIO $ print $ toList env
   liftIO $ print $ toList fenv
   eval x
-
-eval (Numb i)   = return $ Numb i
-eval (Tape s)   = return $ Tape s
-eval (Bool b)   = return $ Bool b
-eval (List [])  = return Nil
-eval Nil        = return Nil
+eval (Numb i) = return $ Numb i
+eval (Tape s) = return $ Tape s
+eval (Bool b) = return $ Bool b
+eval (List []) = return Nil
+eval Nil = return Nil
 eval n@(Atom _) = getVar n
-
-eval (List [Atom "showSF", rest])      = return . Tape . T.pack $ show rest
+eval (List [Atom "showSF", rest]) = return . Tape . T.pack $ show rest
 eval (List ((:) (Atom "showSF") rest)) = return . Tape . T.pack . show $ List rest
-
 eval (List [Atom "quote", val]) = return val
-
 eval (List [Atom "if", pred_, then_, else_]) = do
   ifRes <- eval pred_
   case ifRes of
-    (Bool True)  -> eval then_
+    (Bool True) -> eval then_
     (Bool False) -> eval else_
     _ ->
       throw $ BadSpecialForm "if's first arg must eval into a boolean"
-eval (List ( (:) (Atom "if") _)) =
+eval (List ((:) (Atom "if") _)) =
   throw $ BadSpecialForm "(if <bool> <s-expr> <s-expr>)"
-
 eval (List [Atom "begin", rest]) = evalBody rest
-eval (List ((:) (Atom "begin") rest )) = evalBody $ List rest
-
+eval (List ((:) (Atom "begin") rest)) = evalBody $ List rest
 -- top-level define
 -- TODO: how to make this eval correctly?
-eval (List [Atom "define", List (name:args), body]) = do
-  Env{..} <- ask
+eval (List [Atom "define", List (name : args), body]) = do
+  Env {..} <- ask
   _ <- eval body
-  bindArgsEval (name:args) [body] name
-
+  bindArgsEval (name : args) [body] name
 eval (List [Atom "define", name, body]) = do
-  Env{..} <- ask
+  Env {..} <- ask
   _ <- eval body
   bindArgsEval [name] [body] name
-
 eval (List [Atom "let", List pairs, expr]) = do
-  Env{..} <- ask
+  Env {..} <- ask
   atoms <- mapM ensureAtom $ getEven pairs
-  vals  <- mapM eval       $ getOdd  pairs
+  vals <- mapM eval $ getOdd pairs
   bindArgsEval atoms vals expr
-
-eval (List (Atom "let":_) ) =
+eval (List (Atom "let" : _)) =
   throw $ BadSpecialForm "let function expects list of parameters and S-Expression body\n(let <pairs> <s-expr>)"
-
-
 eval (List [Atom "lambda", List params, expr]) = do
   ctx <- ask
-  return  $ Func (IFunc $ applyFunc expr params) ctx
-eval (List (Atom "lambda":_) ) = throw $ BadSpecialForm "lambda function expects list of parameters and S-Expression body\n(lambda <params> <s-expr>)"
-
-
+  return $ Func (IFunc $ applyFunc expr params) ctx
+eval (List (Atom "lambda" : _)) = throw $ BadSpecialForm "lambda function expects list of parameters and S-Expression body\n(lambda <params> <s-expr>)"
 -- needed to get cadr, etc to work
-eval (List [Atom "cdr", List [Atom "quote", List (_:xs)]]) =
+eval (List [Atom "cdr", List [Atom "quote", List (_ : xs)]]) =
   return $ List xs
-eval (List [Atom "cdr", arg@(List (x:xs))]) =
+eval (List [Atom "cdr", arg@(List (x : xs))]) =
   case x of
-      -- proxy for if the list can be evaluated
-      Atom _ -> do
-        val <- eval arg
-        eval $ List [Atom "cdr", val]
-      _ -> return $ List xs
-
-
-eval (List [Atom "car", List [Atom "quote", List (x:_)]]) =
-  return $  x
-eval (List [Atom "car", arg@(List (x:_))]) =
+    -- proxy for if the list can be evaluated
+    Atom _ -> do
+      val <- eval arg
+      eval $ List [Atom "cdr", val]
+    _ -> return $ List xs
+eval (List [Atom "car", List [Atom "quote", List (x : _)]]) =
+  return $ x
+eval (List [Atom "car", arg@(List (x : _))]) =
   case x of
-      Atom _ -> do
-        val <- eval arg
-        eval $ List [Atom "car", val]
-      _ -> return $ x
-
-
+    Atom _ -> do
+      val <- eval arg
+      eval $ List [Atom "car", val]
+    _ -> return $ x
 eval (List ((:) x xs)) = do
-  Env{..} <- ask
+  Env {..} <- ask
   funVar <- eval x
   xVal <- mapM eval xs
   case funVar of
-      (IFun (IFunc internalFn)) ->
-          internalFn xVal
-
-      (Func (IFunc definedFn) (Env benv _)) ->
-          local (const $ Env benv fenv) $ definedFn xVal
-
-      _ ->
-          throw $ NotFunction funVar
+    (IFun (IFunc internalFn)) ->
+      internalFn xVal
+    (Func (IFunc definedFn) (Env benv _)) ->
+      local (const $ Env benv fenv) $ definedFn xVal
+    _ ->
+      throw $ NotFunction funVar
 
 updateEnv :: T.Text -> Expr -> Env -> Env
-updateEnv var e@(IFun _)   Env{..} = Env env $ Map.insert var e fenv
-updateEnv var e@(Func _ _) Env{..} = Env env $ Map.insert var e fenv
-updateEnv var e            Env{..} = Env (Map.insert var e env) fenv
+updateEnv var e@(IFun _) Env {..} = Env env $ Map.insert var e fenv
+updateEnv var e@(Func _ _) Env {..} = Env env $ Map.insert var e fenv
+updateEnv var e Env {..} = Env (Map.insert var e env) fenv
 
 evalBody :: Expr -> Eval Expr
 evalBody (List [List ((:) (Atom "define") [Atom var, defExpr]), rest]) = do
   evalVal <- eval defExpr
   ctx <- ask
   local (const $ updateEnv var evalVal ctx) $ eval rest
-
 evalBody (List ((:) (List ((:) (Atom "define") [Atom var, defExpr])) rest)) = do
   evalVal <- eval defExpr
   ctx <- ask
   local (const $ updateEnv var evalVal ctx) $ evalBody $ List rest
-
 evalBody x = eval x
diff --git a/Biz/Language/Bs/Expr.hs b/Biz/Language/Bs/Expr.hs
index a39c7b6..2452622 100644
--- a/Biz/Language/Bs/Expr.hs
+++ b/Biz/Language/Bs/Expr.hs
@@ -1,7 +1,8 @@
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE NoImplicitPrelude #-}
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE NoImplicitPrelude #-}
+
 module Language.Bs.Expr where
 
 import Data.String (String)
@@ -13,17 +14,18 @@ import qualified Text.PrettyPrint.Leijen.Text as PP
 import Text.PrettyPrint.Leijen.Text hiding ((<$>))
 
 type Ctx = Map Text Expr
-data Env = Env { env :: Ctx, fenv :: Ctx }
-    deriving (Eq)
 
-newtype Eval a = Eval { unEval :: ReaderT Env IO a }
-    deriving (Monad, Functor, Applicative, MonadReader Env, MonadIO)
+data Env = Env {env :: Ctx, fenv :: Ctx}
+  deriving (Eq)
+
+newtype Eval a = Eval {unEval :: ReaderT Env IO a}
+  deriving (Monad, Functor, Applicative, MonadReader Env, MonadIO)
 
-data IFunc = IFunc { fn :: [Expr] -> Eval Expr }
-    deriving (Typeable)
+data IFunc = IFunc {fn :: [Expr] -> Eval Expr}
+  deriving (Typeable)
 
 instance Eq IFunc where
-    (==) _ _ = False
+  (==) _ _ = False
 
 data Expr
   = Atom Text
@@ -37,7 +39,7 @@ data Expr
   deriving (Typeable, Eq)
 
 instance Show Expr where
-    show = T.unpack . ppexpr
+  show = T.unpack . ppexpr
 
 data LispErrorType
   = NumArgs Integer [Expr]
@@ -55,12 +57,13 @@ data LispErrorType
 data LispError = LispError Expr LispErrorType
 
 instance Show LispErrorType where
-    show = T.unpack . ppexpr
+  show = T.unpack . ppexpr
 
 instance Show LispError where
-    show = T.unpack . ppexpr
+  show = T.unpack . ppexpr
 
 instance Exception LispErrorType
+
 instance Exception LispError
 
 ppexpr :: Pretty a => a -> Text
@@ -70,85 +73,67 @@ ppexpr x = PP.displayTStrict (PP.renderPretty 1.0 70 (pretty x))
 --prettyList = encloseSep lparen rparen PP.space
 
 instance Pretty Expr where
-    pretty v =
-        case v of
-            Atom a ->
-                textStrict a
-
-            List ls ->
-                prettyList $ fmap pretty ls
-
-            Numb n ->
-                integer n
-
-            Tape t ->
-                textStrict "\"" <> textStrict t <> textStrict "\""
-
-            IFun _ ->
-                textStrict "<internal function>"
-
-            Func _ _ ->
-                textStrict "<lambda function>"
-
-            Bool True ->
-                textStrict "#t"
-
-            Bool False ->
-                textStrict "#f"
-
-            Nil ->
-                textStrict "'()"
+  pretty v =
+    case v of
+      Atom a ->
+        textStrict a
+      List ls ->
+        prettyList $ fmap pretty ls
+      Numb n ->
+        integer n
+      Tape t ->
+        textStrict "\"" <> textStrict t <> textStrict "\""
+      IFun _ ->
+        textStrict "<internal function>"
+      Func _ _ ->
+        textStrict "<lambda function>"
+      Bool True ->
+        textStrict "#t"
+      Bool False ->
+        textStrict "#f"
+      Nil ->
+        textStrict "'()"
 
 instance Pretty LispErrorType where
   pretty err = case err of
-      NumArgs i args ->
-          textStrict "number of arguments"
-          <$$> textStrict "expected"
-          <+> textStrict (T.pack $ show i)
-          <$$> textStrict "received"
-          <+> textStrict (T.pack $ show $ length args)
-
-
-      LengthOfList txt i ->
-          textStrict "length of list in:"
-          <+> textStrict txt
-          <$$> textStrict "length:"
-          <+> textStrict (T.pack $ show i)
-
-      ParseError txt ->
-          textStrict "cannot parse expr:"
-          <+> textStrict (T.pack txt)
-
-      TypeMismatch txt expr ->
-          textStrict "type mismatch:"
-          <$$> textStrict txt
-          <$$> pretty expr
-
-      BadSpecialForm txt ->
-          textStrict "bad special form:"
-          <$$> textStrict txt
-
-      NotFunction expr ->
-          textStrict "not a function"
-          <$$> pretty expr
-
-      UnboundVar txt ->
-          textStrict "unbound variable:"
-          <$$> textStrict txt
-
-      Default _ ->
-          textStrict "default error"
-
-      ReadFileError txt ->
-          textStrict "error reading file:"
-          <$$> textStrict txt
-
-      ExpectedList txt ->
-          textStrict "expected list:"
-          <$$> textStrict txt
+    NumArgs i args ->
+      textStrict "number of arguments"
+        <$$> textStrict "expected"
+        <+> textStrict (T.pack $ show i)
+        <$$> textStrict "received"
+        <+> textStrict (T.pack $ show $ length args)
+    LengthOfList txt i ->
+      textStrict "length of list in:"
+        <+> textStrict txt
+        <$$> textStrict "length:"
+        <+> textStrict (T.pack $ show i)
+    ParseError txt ->
+      textStrict "cannot parse expr:"
+        <+> textStrict (T.pack txt)
+    TypeMismatch txt expr ->
+      textStrict "type mismatch:"
+        <$$> textStrict txt
+        <$$> pretty expr
+    BadSpecialForm txt ->
+      textStrict "bad special form:"
+        <$$> textStrict txt
+    NotFunction expr ->
+      textStrict "not a function"
+        <$$> pretty expr
+    UnboundVar txt ->
+      textStrict "unbound variable:"
+        <$$> textStrict txt
+    Default _ ->
+      textStrict "default error"
+    ReadFileError txt ->
+      textStrict "error reading file:"
+        <$$> textStrict txt
+    ExpectedList txt ->
+      textStrict "expected list:"
+        <$$> textStrict txt
 
 instance Pretty LispError where
   pretty (LispError expr typ) =
-      textStrict "error evaluating:"
+    textStrict "error evaluating:"
       <$$> indent 4 (pretty expr)
       <$$> pretty typ
diff --git a/Biz/Language/Bs/Parser.hs b/Biz/Language/Bs/Parser.hs
index 3044a60..574536d 100644
--- a/Biz/Language/Bs/Parser.hs
+++ b/Biz/Language/Bs/Parser.hs
@@ -1,10 +1,12 @@
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE NoImplicitPrelude #-}
-module Language.Bs.Parser (
-  readExpr
-, readExprFile
-) where
+
+module Language.Bs.Parser
+  ( readExpr,
+    readExprFile,
+  )
+where
 
 import Control.Monad (fail)
 import Control.Monad (mzero)
@@ -23,15 +25,16 @@ lexer :: Tok.GenTokenParser T.Text () Identity
 lexer = Tok.makeTokenParser style
 
 style :: Tok.GenLanguageDef T.Text () Identity
-style = Lang.emptyDef {
-  Tok.commentStart = "#|"
-  , Tok.commentEnd = "|#"
-  , Tok.commentLine = ";"
-  , Tok.opStart = mzero
-  , Tok.opLetter = mzero
-  , Tok.identStart = letter <|> oneOf "!$%&*/:<=>?^_~"
-  , Tok.identLetter = digit <|> letter <|> oneOf "!$%&*/:<=>?^_~+-.@"
-  }
+style =
+  Lang.emptyDef
+    { Tok.commentStart = "#|",
+      Tok.commentEnd = "|#",
+      Tok.commentLine = ";",
+      Tok.opStart = mzero,
+      Tok.opLetter = mzero,
+      Tok.identStart = letter <|> oneOf "!$%&*/:<=>?^_~",
+      Tok.identLetter = digit <|> letter <|> oneOf "!$%&*/:<=>?^_~+-.@"
+    }
 
 parens :: Parser a -> Parser a
 parens = Tok.parens lexer
@@ -48,9 +51,10 @@ quoted p = try (char '\'') *> p
 identifier :: Parser T.Text
 identifier = T.pack <$> (Tok.identifier lexer <|> specialIdentifier) <?> "identifier"
   where
-  specialIdentifier :: Parser String
-  specialIdentifier = lexeme $ try $
-    string "-" <|> string "+" <|> string "..."
+    specialIdentifier :: Parser String
+    specialIdentifier =
+      lexeme $ try $
+        string "-" <|> string "+" <|> string "..."
 
 -- | The @Radix@ type consists of a base integer (e.g. @10@) and a parser for
 -- digits in that base (e.g. @digit@).
@@ -61,7 +65,7 @@ type Radix = (Integer, Parser Char)
 numberWithRadix :: Radix -> Parser Integer
 numberWithRadix (base, baseDigit) = do
   digits <- many1 baseDigit
-  let n = foldl (\x d -> base*x + toInteger (digitToInt d)) 0 digits
+  let n = foldl (\x d -> base * x + toInteger (digitToInt d)) 0 digits
   seq n (return n)
 
 decimal :: Parser Integer
@@ -70,9 +74,10 @@ decimal = Tok.decimal lexer
 -- | Parse a sign, return either @id@ or @negate@ based on the sign parsed.
 -- Copied from Text.Parsec.Token
 sign :: Parser (Integer -> Integer)
-sign = char '-' *> return negate
-   <|> char '+' *> return identity
-   <|> return identity
+sign =
+  char '-' *> return negate
+    <|> char '+' *> return identity
+    <|> return identity
 
 intRadix :: Radix -> Parser Integer
 intRadix r = sign <*> numberWithRadix r
@@ -84,26 +89,29 @@ nil :: Parser ()
 nil = try ((char '\'') *> string "()") *> return () <?> "nil"
 
 hashVal :: Parser Expr
-hashVal = lexeme $ char '#'
-  *> (char 't' *> return (Bool True)
-  <|> char 'f' *> return (Bool False)
-  <|> char 'b' *> (Numb <$> intRadix (2, oneOf "01"))
-  <|> char 'o' *> (Numb <$> intRadix (8, octDigit))
-  <|> char 'd' *> (Numb <$> intRadix (10, digit))
-  <|> char 'x' *> (Numb <$> intRadix (16, hexDigit))
-  <|> oneOf "ei" *> fail "Unsupported: exactness"
-  <|> char '(' *> fail "Unsupported: vector"
-  <|> char '\\' *> fail "Unsupported: char")
-
+hashVal =
+  lexeme $
+    char '#'
+      *> ( char 't' *> return (Bool True)
+             <|> char 'f' *> return (Bool False)
+             <|> char 'b' *> (Numb <$> intRadix (2, oneOf "01"))
+             <|> char 'o' *> (Numb <$> intRadix (8, octDigit))
+             <|> char 'd' *> (Numb <$> intRadix (10, digit))
+             <|> char 'x' *> (Numb <$> intRadix (16, hexDigit))
+             <|> oneOf "ei" *> fail "Unsupported: exactness"
+             <|> char '(' *> fail "Unsupported: vector"
+             <|> char '\\' *> fail "Unsupported: char"
+         )
 
 lispVal :: Parser Expr
-lispVal = hashVal
-  <|> Nil <$ nil
-  <|> Numb <$> try (sign <*> decimal)
-  <|> Atom <$> identifier
-  <|> Tape <$> textLiteral
-  <|> _Quote <$> quoted lispVal
-  <|> List <$> parens manyExpr
+lispVal =
+  hashVal
+    <|> Nil <$ nil
+    <|> Numb <$> try (sign <*> decimal)
+    <|> Atom <$> identifier
+    <|> Tape <$> textLiteral
+    <|> _Quote <$> quoted lispVal
+    <|> List <$> parens manyExpr
 
 manyExpr :: Parser [Expr]
 manyExpr = lispVal `sepBy` whitespace
diff --git a/Biz/Language/Bs/Primitives.hs b/Biz/Language/Bs/Primitives.hs
index c074c59..4c70499 100644
--- a/Biz/Language/Bs/Primitives.hs
+++ b/Biz/Language/Bs/Primitives.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE NoImplicitPrelude #-}
+
 -- | bs primitives
 --
 -- I would like to reduce the number of primitives in the language to some
@@ -18,134 +19,138 @@ import Protolude
 import System.Directory
 import System.IO
 
-type Prim   = [(T.Text, Expr)]
-type Unary  = Expr -> Eval Expr
+type Prim = [(T.Text, Expr)]
+
+type Unary = Expr -> Eval Expr
+
 type Binary = Expr -> Expr -> Eval Expr
 
 mkF :: ([Expr] -> Eval Expr) -> Expr
 mkF = IFun . IFunc
 
 primEnv :: Prim
-primEnv = [
-    ("+"            , mkF $ binopFold (numOp    (+))  (Numb 0) )
-  , ("*"            , mkF $ binopFold (numOp    (*))  (Numb 1) )
-  , ("string-append", mkF $ binopFold (strOp    (<>)) (Tape "") )
-  , ("-"            , mkF $ binop $    numOp    (-))
-  , ("<"            , mkF $ binop $    numCmp   (<))
-  , ("<="           , mkF $ binop $    numCmp   (<=))
-  , (">"            , mkF $ binop $    numCmp   (>))
-  , (">="           , mkF $ binop $    numCmp   (>=))
-  , ("=="           , mkF $ binop $    numCmp   (==))
-  , ("even?"        , mkF $ unop $     numBool   even)
-  , ("odd?"         , mkF $ unop $     numBool   odd)
-  , ("neg?"         , mkF $ unop $     numBool (< 0))
-  , ("pos?"         , mkF $ unop $     numBool (> 0))
-  , ("eq?"          , mkF $ binop eqCmd )
-  , ("null?"        , mkF $ unop (eqCmd Nil) )
-  , ("bl-eq?"       , mkF $ binop $ eqOp (==))
-  , ("and"          , mkF $ binopFold (eqOp (&&)) (Bool True))
-  , ("or"           , mkF $ binopFold (eqOp (||)) (Bool False))
-  , ("not"          , mkF $ unop $ notOp)
-  , ("cons"         , mkF $ Language.Bs.Primitives.cons)
-  , ("cdr"          , mkF $ Language.Bs.Primitives.cdr)
-  , ("car"          , mkF $ Language.Bs.Primitives.car)
-  , ("quote"        , mkF $ quote)
-  , ("file?"        , mkF $ unop fileExists)
-  , ("slurp"        , mkF $ unop slurp)
-  , ("wslurp"       , mkF $ unop wSlurp)
-  , ("put"          , mkF $ binop put_)
+primEnv =
+  [ ("+", mkF $ binopFold (numOp (+)) (Numb 0)),
+    ("*", mkF $ binopFold (numOp (*)) (Numb 1)),
+    ("string-append", mkF $ binopFold (strOp (<>)) (Tape "")),
+    ("-", mkF $ binop $ numOp (-)),
+    ("<", mkF $ binop $ numCmp (<)),
+    ("<=", mkF $ binop $ numCmp (<=)),
+    (">", mkF $ binop $ numCmp (>)),
+    (">=", mkF $ binop $ numCmp (>=)),
+    ("==", mkF $ binop $ numCmp (==)),
+    ("even?", mkF $ unop $ numBool even),
+    ("odd?", mkF $ unop $ numBool odd),
+    ("neg?", mkF $ unop $ numBool (< 0)),
+    ("pos?", mkF $ unop $ numBool (> 0)),
+    ("eq?", mkF $ binop eqCmd),
+    ("null?", mkF $ unop (eqCmd Nil)),
+    ("bl-eq?", mkF $ binop $ eqOp (==)),
+    ("and", mkF $ binopFold (eqOp (&&)) (Bool True)),
+    ("or", mkF $ binopFold (eqOp (||)) (Bool False)),
+    ("not", mkF $ unop $ notOp),
+    ("cons", mkF $ Language.Bs.Primitives.cons),
+    ("cdr", mkF $ Language.Bs.Primitives.cdr),
+    ("car", mkF $ Language.Bs.Primitives.car),
+    ("quote", mkF $ quote),
+    ("file?", mkF $ unop fileExists),
+    ("slurp", mkF $ unop slurp),
+    ("wslurp", mkF $ unop wSlurp),
+    ("put", mkF $ binop put_)
   ]
 
 unop :: Unary -> [Expr] -> Eval Expr
-unop op [x]    = op x
-unop _ args    = throw $ NumArgs 1 args
+unop op [x] = op x
+unop _ args = throw $ NumArgs 1 args
 
 binop :: Binary -> [Expr] -> Eval Expr
-binop op [x,y]  = op x y
-binop _  args   = throw $ NumArgs 2 args
+binop op [x, y] = op x y
+binop _ args = throw $ NumArgs 2 args
 
-fileExists :: Expr  -> Eval Expr
+fileExists :: Expr -> Eval Expr
 fileExists (Tape txt) = Bool <$> liftIO (doesFileExist $ T.unpack txt)
-fileExists val          = throw $ TypeMismatch "read expects string, instead got: " val
+fileExists val = throw $ TypeMismatch "read expects string, instead got: " val
 
-slurp :: Expr  -> Eval Expr
+slurp :: Expr -> Eval Expr
 slurp (Tape txt) = liftIO $ wFileSlurp txt
-slurp val          =  throw $ TypeMismatch "read expects string, instead got: " val
+slurp val = throw $ TypeMismatch "read expects string, instead got: " val
 
 wFileSlurp :: T.Text -> IO Expr
 wFileSlurp fileName = withFile (T.unpack fileName) ReadMode go
-  where go = readTextFile fileName
+  where
+    go = readTextFile fileName
 
 openURL :: T.Text -> IO Expr
 openURL x = do
-  req  <- simpleHTTP (getRequest $ T.unpack x)
+  req <- simpleHTTP (getRequest $ T.unpack x)
   body <- getResponseBody req
   return $ Tape $ T.pack body
 
 wSlurp :: Expr -> Eval Expr
-wSlurp (Tape txt) =  liftIO  $  openURL txt
+wSlurp (Tape txt) = liftIO $ openURL txt
 wSlurp val = throw $ TypeMismatch "wSlurp expects a string, instead got: " val
 
 readTextFile :: T.Text -> Handle -> IO Expr
 readTextFile fileName h = do
   exists <- doesFileExist $ T.unpack fileName
   if exists
-  then (TIO.hGetContents h) >>= (return . Tape)
-  else throw $ ReadFileError $ T.concat [" file does not exist: ", fileName]
+    then (TIO.hGetContents h) >>= (return . Tape)
+    else throw $ ReadFileError $ T.concat [" file does not exist: ", fileName]
 
 put_ :: Expr -> Expr -> Eval Expr
-put_ (Tape file) (Tape msg) =  liftIO $ wFilePut file msg
-put_ (Tape _)  val = throw $ TypeMismatch "put expects string in the second argument (try using show), instead got: " val
-put_ val  _ = throw $ TypeMismatch "put expects string, instead got: " val
+put_ (Tape file) (Tape msg) = liftIO $ wFilePut file msg
+put_ (Tape _) val = throw $ TypeMismatch "put expects string in the second argument (try using show), instead got: " val
+put_ val _ = throw $ TypeMismatch "put expects string, instead got: " val
 
 wFilePut :: T.Text -> T.Text -> IO Expr
 wFilePut fileName msg = withFile (T.unpack fileName) WriteMode go
-  where go = putTextFile fileName msg
+  where
+    go = putTextFile fileName msg
 
 putTextFile :: T.Text -> T.Text -> Handle -> IO Expr
 putTextFile fileName msg h = do
   canWrite <- hIsWritable h
   if canWrite
-  then (TIO.hPutStr h msg) >> (return $ Tape msg)
-  else throw $ ReadFileError $ T.concat [" file does not exist: ", fileName]
+    then (TIO.hPutStr h msg) >> (return $ Tape msg)
+    else throw $ ReadFileError $ T.concat [" file does not exist: ", fileName]
 
 binopFold :: Binary -> Expr -> [Expr] -> Eval Expr
 binopFold op farg args = case args of
-    []-> throw $ NumArgs 2 args
-    [a,b]  -> op a b
-    _ -> foldM op farg args
+  [] -> throw $ NumArgs 2 args
+  [a, b] -> op a b
+  _ -> foldM op farg args
 
 numBool :: (Integer -> Bool) -> Expr -> Eval Expr
 numBool op (Numb x) = return $ Bool $ op x
-numBool _   x       = throw $ TypeMismatch "numeric op " x
+numBool _ x = throw $ TypeMismatch "numeric op " x
 
 numOp :: (Integer -> Integer -> Integer) -> Expr -> Expr -> Eval Expr
-numOp op (Numb x) (Numb y) = return $ Numb $ op x  y
-numOp _  Nil      (Numb y) = return $ Numb y
-numOp _  (Numb x) Nil      = return $ Numb x
-numOp _  x        (Numb _) = throw $ TypeMismatch "numeric op" x
-numOp _  (Numb _)  y       = throw $ TypeMismatch "numeric op" y
-numOp _  x         _       = throw $ TypeMismatch "numeric op" x
+numOp op (Numb x) (Numb y) = return $ Numb $ op x y
+numOp _ Nil (Numb y) = return $ Numb y
+numOp _ (Numb x) Nil = return $ Numb x
+numOp _ x (Numb _) = throw $ TypeMismatch "numeric op" x
+numOp _ (Numb _) y = throw $ TypeMismatch "numeric op" y
+numOp _ x _ = throw $ TypeMismatch "numeric op" x
 
 strOp :: (T.Text -> T.Text -> T.Text) -> Expr -> Expr -> Eval Expr
 strOp op (Tape x) (Tape y) = return $ Tape $ op x y
-strOp _  Nil      (Tape y) = return $ Tape y
-strOp _  (Tape x) Nil      = return $ Tape x
-strOp _  x        (Tape _) = throw $ TypeMismatch "string op" x
-strOp _  (Tape _) y        = throw $ TypeMismatch "string op" y
-strOp _  x        _        = throw $ TypeMismatch "string op" x
+strOp _ Nil (Tape y) = return $ Tape y
+strOp _ (Tape x) Nil = return $ Tape x
+strOp _ x (Tape _) = throw $ TypeMismatch "string op" x
+strOp _ (Tape _) y = throw $ TypeMismatch "string op" y
+strOp _ x _ = throw $ TypeMismatch "string op" x
 
 eqOp :: (Bool -> Bool -> Bool) -> Expr -> Expr -> Eval Expr
 eqOp op (Bool x) (Bool y) = return $ Bool $ op x y
-eqOp _  x        (Bool _) = throw $ TypeMismatch "bool op" x
-eqOp _  (Bool _)  y       = throw $ TypeMismatch "bool op" y
-eqOp _  x         _       = throw $ TypeMismatch "bool op" x
+eqOp _ x (Bool _) = throw $ TypeMismatch "bool op" x
+eqOp _ (Bool _) y = throw $ TypeMismatch "bool op" y
+eqOp _ x _ = throw $ TypeMismatch "bool op" x
 
 numCmp :: (Integer -> Integer -> Bool) -> Expr -> Expr -> Eval Expr
-numCmp op (Numb x) (Numb y) = return . Bool $ op x  y
-numCmp _  x        (Numb _) = throw $ TypeMismatch "numeric op" x
-numCmp _  (Numb _) y        = throw $ TypeMismatch "numeric op" y
-numCmp _  x        _        = throw $ TypeMismatch "numeric op" x
+numCmp op (Numb x) (Numb y) = return . Bool $ op x y
+numCmp _ x (Numb _) = throw $ TypeMismatch "numeric op" x
+numCmp _ (Numb _) y = throw $ TypeMismatch "numeric op" y
+numCmp _ x _ = throw $ TypeMismatch "numeric op" x
 
 notOp :: Expr -> Eval Expr
 notOp (Bool True) = return $ Bool False
@@ -157,27 +162,27 @@ eqCmd (Atom x) (Atom y) = return . Bool $ x == y
 eqCmd (Numb x) (Numb y) = return . Bool $ x == y
 eqCmd (Tape x) (Tape y) = return . Bool $ x == y
 eqCmd (Bool x) (Bool y) = return . Bool $ x == y
-eqCmd  Nil      Nil     = return $ Bool True
-eqCmd  _        _       = return $ Bool False
+eqCmd Nil Nil = return $ Bool True
+eqCmd _ _ = return $ Bool False
 
 cons :: [Expr] -> Eval Expr
-cons [x,(List ys)] = return $ List $ x:ys
-cons [x,y]         = return $ List [x,y]
-cons _  = throw $ ExpectedList "cons, in second argument"
+cons [x, (List ys)] = return $ List $ x : ys
+cons [x, y] = return $ List [x, y]
+cons _ = throw $ ExpectedList "cons, in second argument"
 
 car :: [Expr] -> Eval Expr
-car [List []    ] = return Nil
-car [List (x:_)]  = return x
-car []            = return Nil
-car _             = throw $ ExpectedList "car"
+car [List []] = return Nil
+car [List (x : _)] = return x
+car [] = return Nil
+car _ = throw $ ExpectedList "car"
 
 cdr :: [Expr] -> Eval Expr
-cdr [List (_:xs)] = return $ List xs
-cdr [List []]     = return Nil
-cdr []            = return Nil
-cdr _             = throw $ ExpectedList "cdr"
+cdr [List (_ : xs)] = return $ List xs
+cdr [List []] = return Nil
+cdr [] = return Nil
+cdr _ = throw $ ExpectedList "cdr"
 
 quote :: [Expr] -> Eval Expr
-quote [List xs]   = return $ List $ Atom "quote" : xs
-quote [expr]      = return $ List $ Atom "quote" : [expr]
-quote args        = throw $ NumArgs 1 args
+quote [List xs] = return $ List $ Atom "quote" : xs
+quote [expr] = return $ List $ Atom "quote" : [expr]
+quote args = throw $ NumArgs 1 args
diff --git a/Biz/Language/Bs/Repl.hs b/Biz/Language/Bs/Repl.hs
index 64ffaa2..24f1bcd 100644
--- a/Biz/Language/Bs/Repl.hs
+++ b/Biz/Language/Bs/Repl.hs
@@ -1,8 +1,10 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE NoImplicitPrelude #-}
-module Language.Bs.Repl (
-mainLoop
-) where
+
+module Language.Bs.Repl
+  ( mainLoop,
+  )
+where
 
 import Control.Monad.Trans
 import Data.String
@@ -22,7 +24,8 @@ repl = do
   case minput of
     Nothing -> outputStrLn "bye."
     Just input -> (liftIO $ process input) >> repl
-    --Just input -> (liftIO $ processToAST input) >> repl
+
+--Just input -> (liftIO $ processToAST input) >> repl
 
 process :: String -> IO ()
 process str = do