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-rw-r--r--Com/Simatime/language/Bs/Primitives.hs183
1 files changed, 0 insertions, 183 deletions
diff --git a/Com/Simatime/language/Bs/Primitives.hs b/Com/Simatime/language/Bs/Primitives.hs
deleted file mode 100644
index c074c59..0000000
--- a/Com/Simatime/language/Bs/Primitives.hs
+++ /dev/null
@@ -1,183 +0,0 @@
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE NoImplicitPrelude #-}
--- | bs primitives
---
--- I would like to reduce the number of primitives in the language to some
--- minimal number, like SKI combinator or Nock instructions. I'm not sure what
--- the minimal number is. The idea is to move primitives from here into core.scm
--- over time.
-module Language.Bs.Primitives where
-
-import Control.Exception
-import Control.Monad.Except
-import Data.Text as T
-import Data.Text.IO as TIO
-import Language.Bs.Expr
-import Network.HTTP
-import Protolude
-import System.Directory
-import System.IO
-
-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_)
- ]
-
-unop :: Unary -> [Expr] -> Eval Expr
-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
-
-fileExists :: Expr -> Eval Expr
-fileExists (Tape txt) = Bool <$> liftIO (doesFileExist $ T.unpack txt)
-fileExists val = throw $ TypeMismatch "read expects string, instead got: " val
-
-slurp :: Expr -> Eval Expr
-slurp (Tape txt) = liftIO $ wFileSlurp txt
-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
-
-openURL :: T.Text -> IO Expr
-openURL x = do
- 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 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]
-
-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
-
-wFilePut :: T.Text -> T.Text -> IO Expr
-wFilePut fileName msg = withFile (T.unpack fileName) WriteMode go
- 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]
-
-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
-
-numBool :: (Integer -> Bool) -> Expr -> Eval Expr
-numBool op (Numb x) = return $ Bool $ 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
-
-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
-
-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
-
-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
-
-notOp :: Expr -> Eval Expr
-notOp (Bool True) = return $ Bool False
-notOp (Bool False) = return $ Bool True
-notOp x = throw $ TypeMismatch " not expects Bool" x
-
-eqCmd :: Expr -> Expr -> Eval Expr
-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
-
-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"
-
-car :: [Expr] -> Eval Expr
-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"
-
-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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 14:24:57 +0000