ref: b23508e5d56908ec14e24f8de1b2400531206604
dir: /ghc/PrimTable.hs/
module PrimTable(module PrimTable) where
import Control.Exception
import Data.Bits
import Data.Char
import Data.Maybe
import Data.Word()
import System.IO
import Unsafe.Coerce
import GHC.Types(Any)
import Foreign.C.String
import Foreign.C.Types
import Foreign.Marshal.Alloc
import Foreign.Ptr
--import System.Environment
import System.IO.Unsafe
--import Debug.Trace
import Compat
type AnyType = Any
primitive :: String -> Any
--primitive s | trace ("primitive " ++ show s) False = undefined
primitive "dynsym" = unsafeCoerce dynsym
primitive s = fromMaybe (error $ "PrimTable.primitive: " ++ s) $ lookup s primOps
primOps :: [(String, Any)]
primOps =
[ comb "S" (\ f g x -> f x (g x))
, comb "K" (\ x _y -> x)
, comb "I" (\ x -> x)
, comb "B" (\ f g x -> f (g x))
, comb "C" (\ f g x -> f x g)
, comb "S'" (\ k f g x -> k (f x) (g x))
, comb "B'" (\ k f g x -> k f (g x))
, comb "C'" (\ k f g x -> k (f x) g)
, comb "A" (\ _x y -> y)
, comb "U" (\ x y -> y x)
, comb "Y" (\ f -> let r = f r in r)
, comb "Z" (\ f g _x -> f g)
, comb "P" (\ x y f -> f x y)
, comb "R" (\ x y f -> y f x)
, comb "O" (\ x y _g f -> f x y)
, comb "K2" (\ x _y _z -> x)
, comb "K3" (\ x _y _z _w -> x)
, comb "K4" (\ x _y _z _w _v -> x)
, comb "C'B" (\ x y z w -> x z (y w))
, arith "+" (+)
, arith "-" (-)
, arith "*" (*)
, arith "quot" quot
, arith "rem" rem
, arith "subtract" subtract
, arithu "neg" negate
, arithu "inv" complement
, arithw "uquot" quot
, arithw "urem" rem
, arithw "and" (.&.)
, arithw "or" (.|.)
, arithw "xor" xor
, arithwi "shl" shiftL
, arithwi "shr" shiftR
, arith "ashr" shiftR
, cmp "==" (==)
, cmp "/=" (/=)
, cmp "<" (<)
, cmp "<=" (<=)
, cmp ">" (>)
, cmp ">=" (>=)
, cmpw "u<" (<)
, cmpw "u<=" (<=)
, cmpw "u>" (>)
, cmpw "u>=" (>=)
, comb "icmp" (\ x y -> fromOrdering (compare (x::Int) y))
, comb "scmp" (\ x y -> fromOrdering (compare (toString x) (toString y)))
, comb "sequal" (\ x y -> fromBool (toString x == toString y))
, comb "p==" (\ x y -> fromBool ((x :: Ptr ()) == y))
, comb "pnull" nullPtr
, comb "pcast" castPtr
, comb "p+" plusPtr
, comb "p-" minusPtr
, farith "f+" (+)
, farith "f-" (-)
, farith "f*" (*)
, farith "f/" (/)
, farithu "fneg" negate
, fcmp "f==" (==)
, fcmp "f/=" (/=)
, fcmp "f<" (<)
, fcmp "f<=" (<=)
, fcmp "f>" (>)
, fcmp "f>=" (>=)
, comb "fshow" (fromString . (show :: Double -> String))
, comb "fread" ((read :: String -> Double) . toString)
, comb "itof" (fromIntegral :: Int -> Double)
, comb "seq" seq
, comb "rnf" rnf
, comb "error" err
, comb "ord" ord
, comb "chr" chr
, comb "IO.performIO" unsafePerformIO
, comb "IO.catch" (\ io hdl -> catch (io :: IO Any) (\ (exn :: SomeException) -> hdl (fromString $ takeWhile (/= '\n') $ show exn) :: IO Any))
, comb "IO.>>=" iobind
, comb "IO.>>" iothen
, comb "IO.return" ioret
, comb "IO.print" ioprint
, comb "IO.performio" unsafePerformIO
, comb "IO.serialize" ioserialize
, comb "IO.deserialize" iodeserialize
, comb "newCAStringLen" (fmap fromPair . newCAStringLen . toString)
, comb "IO.getArgRef" iogetargref
, comb0 "IO.stdin" stdin
, comb0 "IO.stdout" stdout
, comb0 "IO.stderr" stderr
, comb "noMatch" (\ (s::Any) (l::Int) (c::Int) -> error ("no match at " ++ toString s ++ " line " ++ show l ++ ", col " ++ show c))
, comb "noDefault" (\ (s::Any) -> error ("no default for " ++ toString s))
]
where
comb0 n f = (n, unsafeCoerce f)
comb n f = (n, unsafeCoerce f)
-- comb n f = (n, unsafeCoerce (\ x -> trace (seq x n) (f x)))
arith :: String -> (Int -> Int -> Int) -> (String, Any)
arith = comb
arithw :: String -> (Word -> Word -> Word) -> (String, Any)
arithw = comb
arithwi :: String -> (Word -> Int -> Word) -> (String, Any)
arithwi = comb
arithu :: String -> (Int -> Int) -> (String, Any)
arithu = comb
farith :: String -> (Double -> Double -> Double) -> (String, Any)
farith = comb
farithu :: String -> (Double -> Double) -> (String, Any)
farithu = comb
cmp :: String -> (Int -> Int -> Bool) -> (String, Any)
cmp n f = comb n (\ x y -> fromBool (f x y))
cmpw :: String -> (Word -> Word -> Bool) -> (String, Any)
cmpw n f = comb n (\ x y -> fromBool (f x y))
fcmp :: String -> (Double -> Double -> Bool) -> (String, Any)
fcmp n f = comb n (\ x y -> fromBool (f x y))
err s = error $ "error: " ++ toString s
iobind :: IO a -> (a -> IO b) -> IO b
iobind = (>>=)
iothen :: IO a -> IO b -> IO b
iothen = (>>)
ioret :: a -> IO a
ioret = return
-- Can't implement this
ioprint :: Handle -> a -> IO ()
ioprint h _ = hPutStrLn h "ghc does not support cprint"
ioserialize :: Handle -> a -> IO ()
ioserialize h _ = hPutStrLn h "ghc does not support serialize"
iodeserialize :: Handle -> IO a
iodeserialize _ = error "ghc does not support deserialize"
{-
iogetargs :: IO Any
iogetargs = do
args <- getArgs
return $ fromList $ map fromString args
-}
iogetargref = error "ghc: no IO.getArgRef"
-- Can't implement this
rnf :: a -> ()
rnf x = seq x ()
fromBool :: Bool -> Any
fromBool False = unsafeCoerce $ \ x _y -> x
fromBool True = unsafeCoerce $ \ _x y -> y
fromOrdering :: Ordering -> (Any -> Any -> Any -> Any)
fromOrdering LT = \ x _y _z -> x
fromOrdering EQ = \ _x y _z -> y
fromOrdering GT = \ _x _y z -> z
fromPair :: (a, b) -> Any
fromPair (x, y) = unsafeCoerce $ \ pair -> pair x y
fromString :: String -> Any
fromString = fromList . map (unsafeCoerce . ord)
fromList :: [Any] -> Any
fromList [] = unsafeCoerce $ \ nil _cons -> nil
fromList (x:xs) = unsafeCoerce $ \ _nil cons -> cons (unsafeCoerce x) (fromList xs)
toList :: Any -> [Int]
toList a = (unsafeCoerce a) [] (\ i is -> i : toList is)
toString :: Any -> String
toString = map chr . toList
dynsym :: Any -> Any
dynsym acfun =
let s = toString acfun
in
-- trace ("dynsym: " ++ show s) $
fromMaybe (error $ "ghc: unimplemented FFI: " ++ s) $ lookup s cops
cops :: [(String, Any)]
cops =
[ comb "getTimeMilli" getTimeMilli
, comb "fputc" fputc
, comb "fgetc" fgetc
, comb "fopen" fopen
, comb "fclose" fclose
, comb "putb" putb
, comb "add_FILE" add_FILE
, comb "add_utf8" add_utf8
, comb "free" free
, comb "exp" (fio exp)
, comb "log" (fio log)
, comb "sqrt" (fio sqrt)
, comb "sin" (fio sin)
, comb "cos" (fio cos)
, comb "tan" (fio tan)
, comb "asin" (fio asin)
, comb "acos" (fio acos)
, comb "atan" (fio atan)
, comb "sinh" (fio sinh)
, comb "cosh" (fio cosh)
, comb "tanh" (fio tanh)
, comb "asinh" (fio asinh)
, comb "acosh" (fio acosh)
, comb "atanh" (fio atanh)
, comb "atan2" (fio2 atan2)
]
where
comb n f = (n, unsafeCoerce f)
fio :: (Double -> Double) -> (Double -> IO Double)
fio f = return . f
fio2 :: (Double -> Double -> Double) -> (Double -> Double -> IO Double)
fio2 f = \ x y -> return (f x y)
add_FILE :: Handle -> IO Handle
add_FILE h = return h
add_utf8 :: Handle -> IO Handle
add_utf8 h = do hSetEncoding h utf8; return h
putb :: Int -> Handle -> IO ()
putb c h = hPutChar h (chr c)
fputc :: Int -> Handle -> IO Int
fputc c h = hPutChar h (chr c) >> return 0
fgetc :: Handle -> IO Int
fgetc h = handle (\ (_ :: SomeException) -> return (-1)) (do c <- hGetChar h; return (ord c))
fopen :: Ptr CChar -> Ptr CChar -> IO Handle
fopen name mode = do
sname <- peekCAString name
smode <- peekCAString mode
let hmode =
case smode of
"r" -> ReadMode
"w" -> WriteMode
"a" -> AppendMode
"w+" -> ReadWriteMode
_ -> error "fopen"
openFile sname hmode
fclose :: Handle -> IO Int
fclose h = do hClose h; return 0