{-# LANGUAGE PatternGuards #-} {-# LANGUAGE OverloadedStrings #-} module IRTS.CodegenJavaScript (codegenJavaScript, codegenNode, JSTarget(..)) where import IRTS.JavaScript.AST import Idris.AbsSyntax hiding (TypeCase) import IRTS.Bytecode import IRTS.Lang import IRTS.Simplified import IRTS.Defunctionalise import IRTS.CodegenCommon import Idris.Core.TT import IRTS.System import Util.System import Control.Arrow import Control.Monad (mapM) import Control.Applicative ((<$>), (<*>), pure) import Control.Monad.RWS hiding (mapM) import Control.Monad.State import Data.Char import Numeric import Data.List import Data.Maybe import Data.Word import Data.Traversable hiding (mapM) import System.IO import System.Directory import System.FilePath import qualified Data.Map.Strict as M import qualified Data.Text as T import qualified Data.Text.IO as TIO data CompileInfo = CompileInfo { compileInfoApplyCases :: [Int] , compileInfoEvalCases :: [Int] , compileInfoNeedsBigInt :: Bool } initCompileInfo :: [(Name, [BC])] -> CompileInfo initCompileInfo bc = CompileInfo (collectCases "APPLY" bc) (collectCases "EVAL" bc) (lookupBigInt bc) where lookupBigInt :: [(Name, [BC])] -> Bool lookupBigInt = any (needsBigInt . snd) where needsBigInt :: [BC] -> Bool needsBigInt bc = any testBCForBigInt bc where testBCForBigInt :: BC -> Bool testBCForBigInt (ASSIGNCONST _ c) = testConstForBigInt c testBCForBigInt (CONSTCASE _ c d) = maybe False needsBigInt d || any (needsBigInt . snd) c || any (testConstForBigInt . fst) c testBCForBigInt (CASE _ _ c d) = maybe False needsBigInt d || any (needsBigInt . snd) c testBCForBigInt _ = False testConstForBigInt :: Const -> Bool testConstForBigInt (BI _) = True testConstForBigInt (B64 _) = True testConstForBigInt _ = False collectCases :: String -> [(Name, [BC])] -> [Int] collectCases fun bc = getCases $ findFunction fun bc findFunction :: String -> [(Name, [BC])] -> [BC] findFunction f ((MN 0 fun, bc):_) | fun == txt f = bc findFunction f (_:bc) = findFunction f bc getCases :: [BC] -> [Int] getCases = concatMap analyze where analyze :: BC -> [Int] analyze (CASE _ _ b _) = map fst b analyze _ = [] data JSTarget = Node | JavaScript deriving Eq codegenJavaScript :: CodeGenerator codegenJavaScript ci = codegenJS_all JavaScript (simpleDecls ci) (includes ci) [] (outputFile ci) (outputType ci) codegenNode :: CodeGenerator codegenNode ci = codegenJS_all Node (simpleDecls ci) (includes ci) (compileLibs ci) (outputFile ci) (outputType ci) codegenJS_all :: JSTarget -> [(Name, SDecl)] -> [FilePath] -> [String] -> FilePath -> OutputType -> IO () codegenJS_all target definitions includes libs filename outputType = do let bytecode = map toBC definitions let info = initCompileInfo bytecode let js = concatMap (translateDecl info) bytecode let full = concatMap processFunction js let code = deadCodeElim full let ext = takeExtension filename let isHtml = target == JavaScript && ext == ".html" let htmlPrologue = T.pack "" let (cons, opt) = optimizeConstructors code let (header, rt) = case target of Node -> ("#!/usr/bin/env node\n", "-node") JavaScript -> ("", "-browser") included <- concat <$> getIncludes includes path <- (++) <$> getDataDir <*> (pure "/jsrts/") idrRuntime <- readFile $ path ++ "Runtime-common.js" tgtRuntime <- readFile $ concat [path, "Runtime", rt, ".js"] jsbn <- if compileInfoNeedsBigInt info then readFile $ path ++ "jsbn/jsbn.js" else return "" let runtime = ( header ++ includeLibs libs ++ included ++ jsbn ++ idrRuntime ++ tgtRuntime ) let jsSource = T.pack runtime `T.append` T.concat (map compileJS opt) `T.append` T.concat (map compileJS cons) `T.append` main `T.append` invokeMain let source = if isHtml then htmlPrologue `T.append` jsSource `T.append` htmlEpilogue else jsSource writeSourceText filename source setPermissions filename (emptyPermissions { readable = True , executable = target == Node , writable = True }) where deadCodeElim :: [JS] -> [JS] deadCodeElim js = concatMap collectFunctions js where collectFunctions :: JS -> [JS] collectFunctions fun@(JSAlloc name _) | name == translateName (sMN 0 "runMain") = [fun] collectFunctions fun@(JSAlloc name (Just (JSFunction _ body))) = let invokations = sum $ map ( \x -> execState (countInvokations name x) 0 ) js in if invokations == 0 then [] else [fun] countInvokations :: String -> JS -> State Int () countInvokations name (JSAlloc _ (Just (JSFunction _ body))) = countInvokations name body countInvokations name (JSSeq seq) = void $ traverse (countInvokations name) seq countInvokations name (JSAssign _ rhs) = countInvokations name rhs countInvokations name (JSCond conds) = void $ traverse ( runKleisli $ arr id *** Kleisli (countInvokations name) ) conds countInvokations name (JSSwitch _ conds def) = void $ traverse ( runKleisli $ arr id *** Kleisli (countInvokations name) ) conds >> traverse (countInvokations name) def countInvokations name (JSApp lhs rhs) = void $ countInvokations name lhs >> traverse (countInvokations name) rhs countInvokations name (JSNew _ args) = void $ traverse (countInvokations name) args countInvokations name (JSArray args) = void $ traverse (countInvokations name) args countInvokations name (JSIdent name') | name == name' = get >>= put . (+1) | otherwise = return () countInvokations _ _ = return () processFunction :: JS -> [JS] processFunction = collectSplitFunctions . (\x -> evalRWS (splitFunction x) () 0) includeLibs :: [String] -> String includeLibs = concatMap (\lib -> "var " ++ lib ++ " = require(\"" ++ lib ++"\");\n") getIncludes :: [FilePath] -> IO [String] getIncludes = mapM readFile main :: T.Text main = compileJS $ JSAlloc "main" (Just $ JSFunction [] ( case target of Node -> mainFun JavaScript -> jsMain ) ) jsMain :: JS jsMain = JSCond [ (exists document `jsAnd` isReady, mainFun) , (exists window, windowMainFun) , (JSTrue, mainFun) ] where exists :: JS -> JS exists js = jsTypeOf js `jsNotEq` JSString "undefined" window :: JS window = JSIdent "window" document :: JS document = JSIdent "document" windowMainFun :: JS windowMainFun = jsMeth window "addEventListener" [ JSString "DOMContentLoaded" , JSFunction [] ( mainFun ) , JSFalse ] isReady :: JS isReady = JSParens $ readyState `jsEq` JSString "complete" `jsOr` readyState `jsEq` JSString "loaded" readyState :: JS readyState = JSProj (JSIdent "document") "readyState" mainFun :: JS mainFun = JSSeq [ JSAlloc "vm" (Just $ JSNew "i$VM" []) , JSApp (JSIdent "i$SCHED") [JSIdent "vm"] , JSApp ( JSIdent (translateName (sMN 0 "runMain")) ) [JSNew "i$POINTER" [JSNum (JSInt 0)]] , JSApp (JSIdent "i$RUN") [] ] invokeMain :: T.Text invokeMain = compileJS $ JSApp (JSIdent "main") [] optimizeConstructors :: [JS] -> ([JS], [JS]) optimizeConstructors js = let (js', cons) = runState (traverse optimizeConstructor' js) M.empty in (map (allocCon . snd) (M.toList cons), js') where allocCon :: (String, JS) -> JS allocCon (name, con) = JSAlloc name (Just con) newConstructor :: Int -> String newConstructor n = "i$CON$" ++ show n optimizeConstructor' :: JS -> State (M.Map Int (String, JS)) JS optimizeConstructor' js@(JSNew "i$CON" [ JSNum (JSInt tag) , JSArray [] , a , e ]) = do s <- get case M.lookup tag s of Just (i, c) -> return $ JSIdent i Nothing -> do let n = newConstructor tag put $ M.insert tag (n, js) s return $ JSIdent n optimizeConstructor' (JSSeq seq) = JSSeq <$> traverse optimizeConstructor' seq optimizeConstructor' (JSSwitch reg cond def) = do cond' <- traverse (runKleisli $ arr id *** Kleisli optimizeConstructor') cond def' <- traverse optimizeConstructor' def return $ JSSwitch reg cond' def' optimizeConstructor' (JSCond cond) = JSCond <$> traverse (runKleisli $ arr id *** Kleisli optimizeConstructor') cond optimizeConstructor' (JSAlloc fun (Just (JSFunction args body))) = do body' <- optimizeConstructor' body return $ JSAlloc fun (Just (JSFunction args body')) optimizeConstructor' (JSAssign lhs rhs) = do lhs' <- optimizeConstructor' lhs rhs' <- optimizeConstructor' rhs return $ JSAssign lhs' rhs' optimizeConstructor' js = return js collectSplitFunctions :: (JS, [(Int,JS)]) -> [JS] collectSplitFunctions (fun, splits) = map generateSplitFunction splits ++ [fun] where generateSplitFunction :: (Int,JS) -> JS generateSplitFunction (depth, JSAlloc name fun) = JSAlloc (name ++ "$" ++ show depth) fun splitFunction :: JS -> RWS () [(Int,JS)] Int JS splitFunction (JSAlloc name (Just (JSFunction args body@(JSSeq _)))) = do body' <- splitSequence body return $ JSAlloc name (Just (JSFunction args body')) where splitCondition :: JS -> RWS () [(Int,JS)] Int JS splitCondition js | JSCond branches <- js = JSCond <$> processBranches branches | JSSwitch cond branches def <- js = JSSwitch cond <$> (processBranches branches) <*> (traverse splitSequence def) | otherwise = return js where processBranches :: [(JS,JS)] -> RWS () [(Int,JS)] Int [(JS,JS)] processBranches = traverse (runKleisli (arr id *** Kleisli splitSequence)) splitSequence :: JS -> RWS () [(Int, JS)] Int JS splitSequence js@(JSSeq seq) = let (pre,post) = break isBranch seq in case post of [_] -> JSSeq <$> traverse splitCondition seq [call@(JSCond _),rest@(JSApp _ _)] -> do rest' <- splitCondition rest call' <- splitCondition call return $ JSSeq (pre ++ [rest', call']) [call@(JSSwitch _ _ _),rest@(JSApp _ _)] -> do rest' <- splitCondition rest call' <- splitCondition call return $ JSSeq (pre ++ [rest', call']) (call:rest) -> do depth <- get put (depth + 1) new <- splitFunction (newFun rest) tell [(depth, new)] call' <- splitCondition call return $ JSSeq (pre ++ (newCall depth : [call'])) _ -> JSSeq <$> traverse splitCondition seq splitSequence js = return js isBranch :: JS -> Bool isBranch (JSApp (JSIdent "i$CALL") _) = True isBranch (JSCond _) = True isBranch (JSSwitch _ _ _) = True isBranch _ = False newCall :: Int -> JS newCall depth = JSApp (JSIdent "i$CALL") [ JSIdent $ name ++ "$" ++ show depth , JSArray [jsOLDBASE, jsMYOLDBASE] ] newFun :: [JS] -> JS newFun seq = JSAlloc name (Just $ JSFunction ["oldbase", "myoldbase"] (JSSeq seq)) splitFunction js = return js translateDecl :: CompileInfo -> (Name, [BC]) -> [JS] translateDecl info (name@(MN 0 fun), bc) | txt "APPLY" == fun = allocCaseFunctions (snd body) ++ [ JSAlloc ( translateName name ) (Just $ JSFunction ["oldbase"] ( JSSeq $ jsFUNPRELUDE ++ map (translateBC info) (fst body) ++ [ JSCond [ ( (translateReg $ caseReg (snd body)) `jsInstanceOf` "i$CON" `jsAnd` (JSProj (translateReg $ caseReg (snd body)) "app") , JSApp (JSProj (translateReg $ caseReg (snd body)) "app") [jsOLDBASE, jsMYOLDBASE] ) , ( JSNoop , JSSeq $ map (translateBC info) (defaultCase (snd body)) ) ] ] ) ) ] | txt "EVAL" == fun = allocCaseFunctions (snd body) ++ [ JSAlloc ( translateName name ) (Just $ JSFunction ["oldbase"] ( JSSeq $ jsFUNPRELUDE ++ map (translateBC info) (fst body) ++ [ JSCond [ ( (translateReg $ caseReg (snd body)) `jsInstanceOf` "i$CON" `jsAnd` (JSProj (translateReg $ caseReg (snd body)) "ev") , JSApp (JSProj (translateReg $ caseReg (snd body)) "ev") [jsOLDBASE, jsMYOLDBASE] ) , ( JSNoop , JSSeq $ map (translateBC info) (defaultCase (snd body)) ) ] ] ) ) ] where body :: ([BC], [BC]) body = break isCase bc isCase :: BC -> Bool isCase bc | CASE {} <- bc = True | otherwise = False defaultCase :: [BC] -> [BC] defaultCase ((CASE _ _ _ (Just d)):_) = d caseReg :: [BC] -> Reg caseReg ((CASE _ r _ _):_) = r allocCaseFunctions :: [BC] -> [JS] allocCaseFunctions ((CASE _ _ c _):_) = splitBranches c allocCaseFunctions _ = [] splitBranches :: [(Int, [BC])] -> [JS] splitBranches = map prepBranch prepBranch :: (Int, [BC]) -> JS prepBranch (tag, code) = JSAlloc ( translateName name ++ "$" ++ show tag ) (Just $ JSFunction ["oldbase", "myoldbase"] ( JSSeq $ map (translateBC info) code ) ) translateDecl info (name, bc) = [ JSAlloc ( translateName name ) (Just $ JSFunction ["oldbase"] ( JSSeq $ jsFUNPRELUDE ++ map (translateBC info)bc ) ) ] jsFUNPRELUDE :: [JS] jsFUNPRELUDE = [jsALLOCMYOLDBASE] jsALLOCMYOLDBASE :: JS jsALLOCMYOLDBASE = JSAlloc "myoldbase" (Just $ JSNew "i$POINTER" []) translateReg :: Reg -> JS translateReg reg | RVal <- reg = jsRET | Tmp <- reg = JSRaw "//TMPREG" | L n <- reg = jsLOC n | T n <- reg = jsTOP n translateConstant :: Const -> JS translateConstant (I i) = JSNum (JSInt i) translateConstant (Fl f) = JSNum (JSFloat f) translateConstant (Ch c) = JSString $ translateChar c translateConstant (Str s) = JSString $ concatMap translateChar s translateConstant (AType (ATInt ITNative)) = JSType JSIntTy translateConstant StrType = JSType JSStringTy translateConstant (AType (ATInt ITBig)) = JSType JSIntegerTy translateConstant (AType ATFloat) = JSType JSFloatTy translateConstant (AType (ATInt ITChar)) = JSType JSCharTy translateConstant Forgot = JSType JSForgotTy translateConstant (BI 0) = JSNum (JSInteger JSBigZero) translateConstant (BI 1) = JSNum (JSInteger JSBigOne) translateConstant (BI i) = jsBigInt (JSString $ show i) translateConstant (B8 b) = JSWord (JSWord8 b) translateConstant (B16 b) = JSWord (JSWord16 b) translateConstant (B32 b) = JSWord (JSWord32 b) translateConstant (B64 b) = JSWord (JSWord64 b) translateConstant c = JSError $ "Unimplemented Constant: " ++ show c translateChar :: Char -> String translateChar ch | '\a' <- ch = "\\u0007" | '\b' <- ch = "\\b" | '\f' <- ch = "\\f" | '\n' <- ch = "\\n" | '\r' <- ch = "\\r" | '\t' <- ch = "\\t" | '\v' <- ch = "\\v" | '\SO' <- ch = "\\u000E" | '\DEL' <- ch = "\\u007F" | '\\' <- ch = "\\\\" | '\"' <- ch = "\\\"" | '\'' <- ch = "\\\'" | ch `elem` asciiTab = "\\u" ++ fill (showHex (ord ch) "") | ord ch > 255 = "\\u" ++ fill (showHex (ord ch) "") | otherwise = [ch] where fill :: String -> String fill s = case length s of 1 -> "000" ++ s 2 -> "00" ++ s 3 -> "0" ++ s _ -> s asciiTab = ['\NUL', '\SOH', '\STX', '\ETX', '\EOT', '\ENQ', '\ACK', '\BEL', '\BS', '\HT', '\LF', '\VT', '\FF', '\CR', '\SO', '\SI', '\DLE', '\DC1', '\DC2', '\DC3', '\DC4', '\NAK', '\SYN', '\ETB', '\CAN', '\EM', '\SUB', '\ESC', '\FS', '\GS', '\RS', '\US'] translateName :: Name -> String translateName n = "_idris_" ++ concatMap cchar (showCG n) where cchar x | isAlphaNum x = [x] | otherwise = "_" ++ show (fromEnum x) ++ "_" jsASSIGN :: CompileInfo -> Reg -> Reg -> JS jsASSIGN _ r1 r2 = JSAssign (translateReg r1) (translateReg r2) jsASSIGNCONST :: CompileInfo -> Reg -> Const -> JS jsASSIGNCONST _ r c = JSAssign (translateReg r) (translateConstant c) jsCALL :: CompileInfo -> Name -> JS jsCALL _ n = JSApp ( JSIdent "i$CALL" ) [JSIdent (translateName n), JSArray [jsMYOLDBASE]] jsTAILCALL :: CompileInfo -> Name -> JS jsTAILCALL _ n = JSApp ( JSIdent "i$CALL" ) [JSIdent (translateName n), JSArray [jsOLDBASE]] jsFOREIGN :: CompileInfo -> Reg -> String -> [(FType, Reg)] -> JS jsFOREIGN _ reg n args | n == "isNull" , [(FPtr, arg)] <- args = JSAssign ( translateReg reg ) ( JSBinOp "==" (translateReg arg) JSNull ) | n == "idris_eqPtr" , [(_, lhs),(_, rhs)] <- args = JSAssign ( translateReg reg ) ( JSBinOp "==" (translateReg lhs) (translateReg rhs) ) | otherwise = JSAssign ( translateReg reg ) ( JSFFI n (map generateWrapper args) ) where generateWrapper :: (FType, Reg) -> JS generateWrapper (ty, reg) | FFunction <- ty = JSApp (JSIdent "i$ffiWrap") [ translateReg reg , JSIdent "oldbase" , JSIdent "myoldbase" ] | FFunctionIO <- ty = JSApp (JSIdent "i$ffiWrap") [ translateReg reg , JSIdent "oldbase" , JSIdent "myoldbase" ] generateWrapper (_, reg) = translateReg reg jsREBASE :: CompileInfo -> JS jsREBASE _ = JSAssign jsSTACKBASE (JSProj jsOLDBASE "addr") jsSTOREOLD :: CompileInfo ->JS jsSTOREOLD _ = JSAssign (JSProj jsMYOLDBASE "addr") jsSTACKBASE jsADDTOP :: CompileInfo -> Int -> JS jsADDTOP info n | 0 <- n = JSNoop | otherwise = JSBinOp "+=" jsSTACKTOP (JSNum (JSInt n)) jsTOPBASE :: CompileInfo -> Int -> JS jsTOPBASE _ 0 = JSAssign jsSTACKTOP jsSTACKBASE jsTOPBASE _ n = JSAssign jsSTACKTOP (JSBinOp "+" jsSTACKBASE (JSNum (JSInt n))) jsBASETOP :: CompileInfo -> Int -> JS jsBASETOP _ 0 = JSAssign jsSTACKBASE jsSTACKTOP jsBASETOP _ n = JSAssign jsSTACKBASE (JSBinOp "+" jsSTACKTOP (JSNum (JSInt n))) jsNULL :: CompileInfo -> Reg -> JS jsNULL _ r = JSClear (translateReg r) jsERROR :: CompileInfo -> String -> JS jsERROR _ = JSError jsSLIDE :: CompileInfo -> Int -> JS jsSLIDE _ 1 = JSAssign (jsLOC 0) (jsTOP 0) jsSLIDE _ n = JSApp (JSIdent "i$SLIDE") [JSNum (JSInt n)] jsMKCON :: CompileInfo -> Reg -> Int -> [Reg] -> JS jsMKCON info r t rs = JSAssign (translateReg r) ( JSNew "i$CON" [ JSNum (JSInt t) , JSArray (map translateReg rs) , if t `elem` compileInfoApplyCases info then JSIdent $ translateName (sMN 0 "APPLY") ++ "$" ++ show t else JSNull , if t `elem` compileInfoEvalCases info then JSIdent $ translateName (sMN 0 "EVAL") ++ "$" ++ show t else JSNull ] ) jsCASE :: CompileInfo -> Bool -> Reg -> [(Int, [BC])] -> Maybe [BC] -> JS jsCASE info safe reg cases def = JSSwitch (tag safe $ translateReg reg) ( map ((JSNum . JSInt) *** prepBranch) cases ) (fmap prepBranch def) where tag :: Bool -> JS -> JS tag True = jsCTAG tag False = jsTAG prepBranch :: [BC] -> JS prepBranch bc = JSSeq $ map (translateBC info) bc jsTAG :: JS -> JS jsTAG js = (JSTernary (js `jsInstanceOf` "i$CON") ( JSProj js "tag" ) (JSNum (JSInt $ negate 1))) jsCTAG :: JS -> JS jsCTAG js = JSProj js "tag" jsCONSTCASE :: CompileInfo -> Reg -> [(Const, [BC])] -> Maybe [BC] -> JS jsCONSTCASE info reg cases def = JSCond $ ( map (jsEq (translateReg reg) . translateConstant *** prepBranch) cases ) ++ (maybe [] ((:[]) . ((,) JSNoop) . prepBranch) def) where prepBranch :: [BC] -> JS prepBranch bc = JSSeq $ map (translateBC info) bc jsPROJECT :: CompileInfo -> Reg -> Int -> Int -> JS jsPROJECT _ reg loc 0 = JSNoop jsPROJECT _ reg loc 1 = JSAssign (jsLOC loc) ( JSIndex ( JSProj (translateReg reg) "args" ) ( JSNum (JSInt 0) ) ) jsPROJECT _ reg loc ar = JSApp (JSIdent "i$PROJECT") [ translateReg reg , JSNum (JSInt loc) , JSNum (JSInt ar) ] jsOP :: CompileInfo -> Reg -> PrimFn -> [Reg] -> JS jsOP _ reg op args = JSAssign (translateReg reg) jsOP' where jsOP' :: JS jsOP' | LNoOp <- op = translateReg (last args) | LWriteStr <- op, (_:str:_) <- args = JSApp (JSIdent "i$putStr") [translateReg str] | LReadStr <- op = JSApp (JSIdent "i$getLine") [] | (LZExt (ITFixed IT8) ITNative) <- op = jsUnPackBits $ translateReg (last args) | (LZExt (ITFixed IT16) ITNative) <- op = jsUnPackBits $ translateReg (last args) | (LZExt (ITFixed IT32) ITNative) <- op = jsUnPackBits $ translateReg (last args) | (LZExt _ ITBig) <- op = jsBigInt $ JSApp (JSIdent "String") [translateReg (last args)] | (LPlus (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "add" [rhs] | (LMinus (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "subtract" [rhs] | (LTimes (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "multiply" [rhs] | (LSDiv (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "divide" [rhs] | (LSRem (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "mod" [rhs] | (LEq (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "equals" [rhs] | (LSLt (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "lesser" [rhs] | (LSLe (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "lesserOrEquals" [rhs] | (LSGt (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "greater" [rhs] | (LSGe (ATInt ITBig)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "greaterOrEquals" [rhs] | (LPlus ATFloat) <- op , (lhs:rhs:_) <- args = translateBinaryOp "+" lhs rhs | (LMinus ATFloat) <- op , (lhs:rhs:_) <- args = translateBinaryOp "-" lhs rhs | (LTimes ATFloat) <- op , (lhs:rhs:_) <- args = translateBinaryOp "*" lhs rhs | (LSDiv ATFloat) <- op , (lhs:rhs:_) <- args = translateBinaryOp "/" lhs rhs | (LEq ATFloat) <- op , (lhs:rhs:_) <- args = translateCompareOp "==" lhs rhs | (LSLt ATFloat) <- op , (lhs:rhs:_) <- args = translateCompareOp "<" lhs rhs | (LSLe ATFloat) <- op , (lhs:rhs:_) <- args = translateCompareOp "<=" lhs rhs | (LSGt ATFloat) <- op , (lhs:rhs:_) <- args = translateCompareOp ">" lhs rhs | (LSGe ATFloat) <- op , (lhs:rhs:_) <- args = translateCompareOp ">=" lhs rhs | (LPlus (ATInt ITChar)) <- op , (lhs:rhs:_) <- args = jsCall "i$fromCharCode" [ JSBinOp "+" ( jsCall "i$charCode" [translateReg lhs] ) ( jsCall "i$charCode" [translateReg rhs] ) ] | (LTrunc (ITFixed IT16) (ITFixed IT8)) <- op , (arg:_) <- args = jsPackUBits8 ( JSBinOp "&" (jsUnPackBits $ translateReg arg) (JSNum (JSInt 0xFF)) ) | (LTrunc (ITFixed IT32) (ITFixed IT16)) <- op , (arg:_) <- args = jsPackUBits16 ( JSBinOp "&" (jsUnPackBits $ translateReg arg) (JSNum (JSInt 0xFFFF)) ) | (LTrunc (ITFixed IT64) (ITFixed IT32)) <- op , (arg:_) <- args = jsPackUBits32 ( jsMeth (jsMeth (translateReg arg) "and" [ jsBigInt (JSString $ show 0xFFFFFFFF) ]) "intValue" [] ) | (LTrunc ITBig (ITFixed IT64)) <- op , (arg:_) <- args = jsMeth (translateReg arg) "and" [ jsBigInt (JSString $ show 0xFFFFFFFFFFFFFFFF) ] | (LLSHR (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp ">>" lhs rhs | (LLSHR (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp ">>" lhs rhs | (LLSHR (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp ">>" lhs rhs | (LLSHR (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = jsMeth (translateReg lhs) "shiftRight" [translateReg rhs] | (LSHL (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp "<<" lhs rhs | (LSHL (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp "<<" lhs rhs | (LSHL (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp "<<" lhs rhs | (LSHL (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = jsMeth (jsMeth (translateReg lhs) "shiftLeft" [translateReg rhs]) "and" [ jsBigInt (JSString $ show 0xFFFFFFFFFFFFFFFF) ] | (LAnd (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp "&" lhs rhs | (LAnd (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp "&" lhs rhs | (LAnd (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp "&" lhs rhs | (LAnd (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = jsMeth (translateReg lhs) "and" [translateReg rhs] | (LOr (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp "|" lhs rhs | (LOr (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp "|" lhs rhs | (LOr (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp "|" lhs rhs | (LOr (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = jsMeth (translateReg lhs) "or" [translateReg rhs] | (LXOr (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp "^" lhs rhs | (LXOr (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp "^" lhs rhs | (LXOr (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp "^" lhs rhs | (LXOr (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = jsMeth (translateReg lhs) "xor" [translateReg rhs] | (LPlus (ATInt (ITFixed IT8))) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp "+" lhs rhs | (LPlus (ATInt (ITFixed IT16))) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp "+" lhs rhs | (LPlus (ATInt (ITFixed IT32))) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp "+" lhs rhs | (LPlus (ATInt (ITFixed IT64))) <- op , (lhs:rhs:_) <- args = jsMeth (jsMeth (translateReg lhs) "add" [translateReg rhs]) "and" [ jsBigInt (JSString $ show 0xFFFFFFFFFFFFFFFF) ] | (LMinus (ATInt (ITFixed IT8))) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp "-" lhs rhs | (LMinus (ATInt (ITFixed IT16))) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp "-" lhs rhs | (LMinus (ATInt (ITFixed IT32))) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp "-" lhs rhs | (LMinus (ATInt (ITFixed IT64))) <- op , (lhs:rhs:_) <- args = jsMeth (jsMeth (translateReg lhs) "subtract" [translateReg rhs]) "and" [ jsBigInt (JSString $ show 0xFFFFFFFFFFFFFFFF) ] | (LTimes (ATInt (ITFixed IT8))) <- op , (lhs:rhs:_) <- args = jsPackUBits8 $ bitsBinaryOp "*" lhs rhs | (LTimes (ATInt (ITFixed IT16))) <- op , (lhs:rhs:_) <- args = jsPackUBits16 $ bitsBinaryOp "*" lhs rhs | (LTimes (ATInt (ITFixed IT32))) <- op , (lhs:rhs:_) <- args = jsPackUBits32 $ bitsBinaryOp "*" lhs rhs | (LTimes (ATInt (ITFixed IT64))) <- op , (lhs:rhs:_) <- args = jsMeth (jsMeth (translateReg lhs) "multiply" [translateReg rhs]) "and" [ jsBigInt (JSString $ show 0xFFFFFFFFFFFFFFFF) ] | (LEq (ATInt (ITFixed IT8))) <- op , (lhs:rhs:_) <- args = bitsCompareOp "==" lhs rhs | (LEq (ATInt (ITFixed IT16))) <- op , (lhs:rhs:_) <- args = bitsCompareOp "==" lhs rhs | (LEq (ATInt (ITFixed IT32))) <- op , (lhs:rhs:_) <- args = bitsCompareOp "==" lhs rhs | (LEq (ATInt (ITFixed IT64))) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "equals" [rhs] | (LLt (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = bitsCompareOp "<" lhs rhs | (LLt (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = bitsCompareOp "<" lhs rhs | (LLt (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = bitsCompareOp "<" lhs rhs | (LLt (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "lesser" [rhs] | (LLe (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = bitsCompareOp "<=" lhs rhs | (LLe (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = bitsCompareOp "<=" lhs rhs | (LLe (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = bitsCompareOp "<=" lhs rhs | (LLe (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "lesserOrEquals" [rhs] | (LGt (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = bitsCompareOp ">" lhs rhs | (LGt (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = bitsCompareOp ">" lhs rhs | (LGt (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = bitsCompareOp ">" lhs rhs | (LGt (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "greater" [rhs] | (LGe (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = bitsCompareOp ">=" lhs rhs | (LGe (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = bitsCompareOp ">=" lhs rhs | (LGe (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = bitsCompareOp ">=" lhs rhs | (LGe (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = JSPreOp "+" $ invokeMeth lhs "greaterOrEquals" [rhs] | (LUDiv (ITFixed IT8)) <- op , (lhs:rhs:_) <- args = jsPackUBits8 ( JSBinOp "/" (jsUnPackBits (translateReg lhs)) (jsUnPackBits (translateReg rhs)) ) | (LUDiv (ITFixed IT16)) <- op , (lhs:rhs:_) <- args = jsPackUBits16 ( JSBinOp "/" (jsUnPackBits (translateReg lhs)) (jsUnPackBits (translateReg rhs)) ) | (LUDiv (ITFixed IT32)) <- op , (lhs:rhs:_) <- args = jsPackUBits32 ( JSBinOp "/" (jsUnPackBits (translateReg lhs)) (jsUnPackBits (translateReg rhs)) ) | (LUDiv (ITFixed IT64)) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "divide" [rhs] | (LSDiv (ATInt (ITFixed IT8))) <- op , (lhs:rhs:_) <- args = jsPackSBits8 ( JSBinOp "/" ( jsUnPackBits $ jsPackSBits8 $ jsUnPackBits (translateReg lhs) ) ( jsUnPackBits $ jsPackSBits8 $ jsUnPackBits (translateReg rhs) ) ) | (LSDiv (ATInt (ITFixed IT16))) <- op , (lhs:rhs:_) <- args = jsPackSBits16 ( JSBinOp "/" ( jsUnPackBits $ jsPackSBits16 $ jsUnPackBits (translateReg lhs) ) ( jsUnPackBits $ jsPackSBits16 $ jsUnPackBits (translateReg rhs) ) ) | (LSDiv (ATInt (ITFixed IT32))) <- op , (lhs:rhs:_) <- args = jsPackSBits32 ( JSBinOp "/" ( jsUnPackBits $ jsPackSBits32 $ jsUnPackBits (translateReg lhs) ) ( jsUnPackBits $ jsPackSBits32 $ jsUnPackBits (translateReg rhs) ) ) | (LSDiv (ATInt (ITFixed IT64))) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "divide" [rhs] | (LSRem (ATInt (ITFixed IT8))) <- op , (lhs:rhs:_) <- args = jsPackSBits8 ( JSBinOp "%" ( jsUnPackBits $ jsPackSBits8 $ jsUnPackBits (translateReg lhs) ) ( jsUnPackBits $ jsPackSBits8 $ jsUnPackBits (translateReg rhs) ) ) | (LSRem (ATInt (ITFixed IT16))) <- op , (lhs:rhs:_) <- args = jsPackSBits16 ( JSBinOp "%" ( jsUnPackBits $ jsPackSBits16 $ jsUnPackBits (translateReg lhs) ) ( jsUnPackBits $ jsPackSBits16 $ jsUnPackBits (translateReg rhs) ) ) | (LSRem (ATInt (ITFixed IT32))) <- op , (lhs:rhs:_) <- args = jsPackSBits32 ( JSBinOp "%" ( jsUnPackBits $ jsPackSBits32 $ jsUnPackBits (translateReg lhs) ) ( jsUnPackBits $ jsPackSBits32 $ jsUnPackBits (translateReg rhs) ) ) | (LSRem (ATInt (ITFixed IT64))) <- op , (lhs:rhs:_) <- args = invokeMeth lhs "mod" [rhs] | (LCompl (ITFixed IT8)) <- op , (arg:_) <- args = jsPackSBits8 $ JSPreOp "~" $ jsUnPackBits (translateReg arg) | (LCompl (ITFixed IT16)) <- op , (arg:_) <- args = jsPackSBits16 $ JSPreOp "~" $ jsUnPackBits (translateReg arg) | (LCompl (ITFixed IT32)) <- op , (arg:_) <- args = jsPackSBits32 $ JSPreOp "~" $ jsUnPackBits (translateReg arg) | (LCompl (ITFixed IT64)) <- op , (arg:_) <- args = invokeMeth arg "not" [] | (LPlus _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "+" lhs rhs | (LMinus _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "-" lhs rhs | (LTimes _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "*" lhs rhs | (LSDiv _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "/" lhs rhs | (LSRem _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "%" lhs rhs | (LEq _) <- op , (lhs:rhs:_) <- args = translateCompareOp "==" lhs rhs | (LSLt _) <- op , (lhs:rhs:_) <- args = translateCompareOp "<" lhs rhs | (LSLe _) <- op , (lhs:rhs:_) <- args = translateCompareOp "<=" lhs rhs | (LSGt _) <- op , (lhs:rhs:_) <- args = translateCompareOp ">" lhs rhs | (LSGe _) <- op , (lhs:rhs:_) <- args = translateCompareOp ">=" lhs rhs | (LAnd _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "&" lhs rhs | (LOr _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "|" lhs rhs | (LXOr _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "^" lhs rhs | (LSHL _) <- op , (lhs:rhs:_) <- args = translateBinaryOp "<<" rhs lhs | (LASHR _) <- op , (lhs:rhs:_) <- args = translateBinaryOp ">>" rhs lhs | (LCompl _) <- op , (arg:_) <- args = JSPreOp "~" (translateReg arg) | LStrConcat <- op , (lhs:rhs:_) <- args = translateBinaryOp "+" lhs rhs | LStrEq <- op , (lhs:rhs:_) <- args = translateCompareOp "==" lhs rhs | LStrLt <- op , (lhs:rhs:_) <- args = translateCompareOp "<" lhs rhs | LStrLen <- op , (arg:_) <- args = JSProj (translateReg arg) "length" | (LStrInt ITNative) <- op , (arg:_) <- args = jsCall "parseInt" [translateReg arg] | (LIntStr ITNative) <- op , (arg:_) <- args = jsCall "String" [translateReg arg] | (LSExt ITNative ITBig) <- op , (arg:_) <- args = jsBigInt $ jsCall "String" [translateReg arg] | (LTrunc ITBig ITNative) <- op , (arg:_) <- args = jsMeth (translateReg arg) "intValue" [] | (LIntStr ITBig) <- op , (arg:_) <- args = jsMeth (translateReg arg) "toString" [] | (LStrInt ITBig) <- op , (arg:_) <- args = jsBigInt $ translateReg arg | LFloatStr <- op , (arg:_) <- args = jsCall "String" [translateReg arg] | LStrFloat <- op , (arg:_) <- args = jsCall "parseFloat" [translateReg arg] | (LIntFloat ITNative) <- op , (arg:_) <- args = translateReg arg | (LIntFloat ITBig) <- op , (arg:_) <- args = jsMeth (translateReg arg) "intValue" [] | (LFloatInt ITNative) <- op , (arg:_) <- args = translateReg arg | (LChInt ITNative) <- op , (arg:_) <- args = jsCall "i$charCode" [translateReg arg] | (LIntCh ITNative) <- op , (arg:_) <- args = jsCall "i$fromCharCode" [translateReg arg] | LFExp <- op , (arg:_) <- args = jsCall "Math.exp" [translateReg arg] | LFLog <- op , (arg:_) <- args = jsCall "Math.log" [translateReg arg] | LFSin <- op , (arg:_) <- args = jsCall "Math.sin" [translateReg arg] | LFCos <- op , (arg:_) <- args = jsCall "Math.cos" [translateReg arg] | LFTan <- op , (arg:_) <- args = jsCall "Math.tan" [translateReg arg] | LFASin <- op , (arg:_) <- args = jsCall "Math.asin" [translateReg arg] | LFACos <- op , (arg:_) <- args = jsCall "Math.acos" [translateReg arg] | LFATan <- op , (arg:_) <- args = jsCall "Math.atan" [translateReg arg] | LFSqrt <- op , (arg:_) <- args = jsCall "Math.sqrt" [translateReg arg] | LFFloor <- op , (arg:_) <- args = jsCall "Math.floor" [translateReg arg] | LFCeil <- op , (arg:_) <- args = jsCall "Math.ceil" [translateReg arg] | LFNegate <- op , (arg:_) <- args = JSPreOp "-" (translateReg arg) | LStrCons <- op , (lhs:rhs:_) <- args = invokeMeth lhs "concat" [rhs] | LStrHead <- op , (arg:_) <- args = JSIndex (translateReg arg) (JSNum (JSInt 0)) | LStrRev <- op , (arg:_) <- args = JSProj (translateReg arg) "split('').reverse().join('')" | LStrIndex <- op , (lhs:rhs:_) <- args = JSIndex (translateReg lhs) (translateReg rhs) | LStrTail <- op , (arg:_) <- args = let v = translateReg arg in JSApp (JSProj v "substr") [ JSNum (JSInt 1), JSBinOp "-" (JSProj v "length") (JSNum (JSInt 1)) ] | LStrSubstr <- op , (offset:length:string:_) <- args = let off = translateReg offset len = translateReg length str = translateReg string in JSApp (JSProj str "substr") [ jsCall "Math.max" [JSNum (JSInt 0), off], jsCall "Math.max" [JSNum (JSInt 0), len] ] | LSystemInfo <- op , (arg:_) <- args = jsCall "i$systemInfo" [translateReg arg] | LExternal nul <- op , nul == sUN "prim__null" , _ <- args = JSNull | LExternal ex <- op , ex == sUN "prim__eqPtr" , [lhs, rhs] <- args = translateCompareOp "==" lhs rhs | otherwise = JSError $ "Not implemented: " ++ show op where translateBinaryOp :: String -> Reg -> Reg -> JS translateBinaryOp op lhs rhs = JSBinOp op (translateReg lhs) (translateReg rhs) translateCompareOp :: String -> Reg -> Reg -> JS translateCompareOp op lhs rhs = JSPreOp "+" $ translateBinaryOp op lhs rhs bitsBinaryOp :: String -> Reg -> Reg -> JS bitsBinaryOp op lhs rhs = JSBinOp op (jsUnPackBits (translateReg lhs)) (jsUnPackBits (translateReg rhs)) bitsCompareOp :: String -> Reg -> Reg -> JS bitsCompareOp op lhs rhs = JSPreOp "+" $ bitsBinaryOp op lhs rhs invokeMeth :: Reg -> String -> [Reg] -> JS invokeMeth obj meth args = JSApp (JSProj (translateReg obj) meth) $ map translateReg args jsRESERVE :: CompileInfo -> Int -> JS jsRESERVE _ _ = JSNoop jsSTACK :: JS jsSTACK = JSIdent "i$valstack" jsCALLSTACK :: JS jsCALLSTACK = JSIdent "i$callstack" jsSTACKBASE :: JS jsSTACKBASE = JSIdent "i$valstack_base" jsSTACKTOP :: JS jsSTACKTOP = JSIdent "i$valstack_top" jsOLDBASE :: JS jsOLDBASE = JSIdent "oldbase" jsMYOLDBASE :: JS jsMYOLDBASE = JSIdent "myoldbase" jsRET :: JS jsRET = JSIdent "i$ret" jsLOC :: Int -> JS jsLOC 0 = JSIndex jsSTACK jsSTACKBASE jsLOC n = JSIndex jsSTACK (JSBinOp "+" jsSTACKBASE (JSNum (JSInt n))) jsTOP :: Int -> JS jsTOP 0 = JSIndex jsSTACK jsSTACKTOP jsTOP n = JSIndex jsSTACK (JSBinOp "+" jsSTACKTOP (JSNum (JSInt n))) jsPUSH :: [JS] -> JS jsPUSH args = JSApp (JSProj jsCALLSTACK "push") args jsPOP :: JS jsPOP = JSApp (JSProj jsCALLSTACK "pop") [] translateBC :: CompileInfo -> BC -> JS translateBC info bc | ASSIGN r1 r2 <- bc = jsASSIGN info r1 r2 | ASSIGNCONST r c <- bc = jsASSIGNCONST info r c | UPDATE r1 r2 <- bc = jsASSIGN info r1 r2 | ADDTOP n <- bc = jsADDTOP info n | NULL r <- bc = jsNULL info r | CALL n <- bc = jsCALL info n | TAILCALL n <- bc = jsTAILCALL info n | FOREIGNCALL r _ (FStr n) args <- bc = jsFOREIGN info r n (map fcall args) | FOREIGNCALL _ _ _ _ <- bc = error "JS FFI call not statically known" | TOPBASE n <- bc = jsTOPBASE info n | BASETOP n <- bc = jsBASETOP info n | STOREOLD <- bc = jsSTOREOLD info | SLIDE n <- bc = jsSLIDE info n | REBASE <- bc = jsREBASE info | RESERVE n <- bc = jsRESERVE info n | MKCON r _ t rs <- bc = jsMKCON info r t rs | CASE s r c d <- bc = jsCASE info s r c d | CONSTCASE r c d <- bc = jsCONSTCASE info r c d | PROJECT r l a <- bc = jsPROJECT info r l a | OP r o a <- bc = jsOP info r o a | ERROR e <- bc = jsERROR info e | otherwise = JSRaw $ "//" ++ show bc where fcall (t, arg) = (toFType t, arg) toAType (FCon i) | i == sUN "JS_IntChar" = ATInt ITChar | i == sUN "JS_IntNative" = ATInt ITNative toAType t = error (show t ++ " not defined in toAType") toFnType (FApp c [_,_,s,t]) | c == sUN "JS_Fn" = toFnType t toFnType (FApp c [_,_,r]) | c == sUN "JS_FnIO" = FFunctionIO toFnType (FApp c [_,r]) | c == sUN "JS_FnBase" = FFunction toFnType t = error (show t ++ " not defined in toFnType") toFType (FCon c) | c == sUN "JS_Str" = FString | c == sUN "JS_Float" = FArith ATFloat | c == sUN "JS_Ptr" = FPtr | c == sUN "JS_Unit" = FUnit toFType (FApp c [_,ity]) | c == sUN "JS_IntT" = FArith (toAType ity) toFType (FApp c [_,fty]) | c == sUN "JS_FnT" = toFnType fty toFType t = error (show t ++ " not yet defined in toFType")