tools/pas2c.hs
author koda
Tue, 24 Apr 2012 06:53:39 +0200
changeset 6920 b1d0d26d41fa
parent 6902 7d4e5ce73b98
child 6921 e6033fe39b7f
permissions -rw-r--r--
this should enable png screenshots on osx as well
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{-# LANGUAGE ScopedTypeVariables #-}
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module Pas2C where
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import Text.PrettyPrint.HughesPJ
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import Data.Maybe
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import Data.Char
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import Text.Parsec.Prim hiding (State)
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import Control.Monad.State
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import System.IO
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import System.Directory
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import Control.Monad.IO.Class
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import PascalPreprocessor
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import Control.Exception
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import System.IO.Error
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import qualified Data.Map as Map
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import Data.List (find)
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import Numeric
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import PascalParser
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import PascalUnitSyntaxTree
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data InsertOption = 
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    IOInsert
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    | IOLookup
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    | IODeferred
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type Record = (String, (String, BaseType))
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data RenderState = RenderState 
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    {
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        currentScope :: [Record],
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        lastIdentifier :: String,
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        lastType :: BaseType,
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        stringConsts :: [(String, String)],
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        uniqCounter :: Int,
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        namespaces :: Map.Map String [Record]
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    }
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emptyState = RenderState [] "" BTUnknown [] 0
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getUniq :: State RenderState Int
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getUniq = do
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    i <- gets uniqCounter
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    modify(\s -> s{uniqCounter = uniqCounter s + 1})
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    return i
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addStringConst :: String -> State RenderState Doc
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addStringConst str = do
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    i <- getUniq
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    let sn = "__str" ++ show i
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    modify (\s -> s{lastType = BTString, stringConsts = (sn, str) : stringConsts s})
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    return $ text sn
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escapeStr :: String -> String
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escapeStr = foldr escapeChar []
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escapeChar :: Char -> ShowS
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escapeChar '"' s = "\\\"" ++ s
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escapeChar a s = a : s
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renderStringConsts :: State RenderState Doc
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renderStringConsts = liftM (vcat . map (\(a, b) -> text "STRCONSTDECL" <> parens (text a <> comma <+> doubleQuotes (text $ escapeStr b)) <> semi)) 
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    $ gets stringConsts
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docToLower :: Doc -> Doc
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docToLower = text . map toLower . render
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pas2C :: String -> IO ()
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pas2C fn = do
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    setCurrentDirectory "../hedgewars/"
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    s <- flip execStateT initState $ f fn
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    renderCFiles s
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    where
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    printLn = liftIO . hPutStrLn stderr
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    print = liftIO . hPutStr stderr
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    initState = Map.empty
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    f :: String -> StateT (Map.Map String PascalUnit) IO ()
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    f fileName = do
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        processed <- gets $ Map.member fileName
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        unless processed $ do
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            print ("Preprocessing '" ++ fileName ++ ".pas'... ")
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            fc' <- liftIO 
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                $ tryJust (guard . isDoesNotExistError) 
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                $ preprocess (fileName ++ ".pas")
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            case fc' of
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                (Left a) -> do
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                    modify (Map.insert fileName (System []))
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                    printLn "doesn't exist"
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                (Right fc) -> do
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                    print "ok, parsing... "
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                    let ptree = parse pascalUnit fileName fc
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                    case ptree of
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                         (Left a) -> do
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                            liftIO $ writeFile "preprocess.out" fc
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                            printLn $ show a ++ "\nsee preprocess.out for preprocessed source"
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                            fail "stop"
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                         (Right a) -> do
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                            printLn "ok"
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                            modify (Map.insert fileName a)
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                            mapM_ f (usesFiles a)
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renderCFiles :: Map.Map String PascalUnit -> IO ()
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renderCFiles units = do
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    let u = Map.toList units
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    let nss = Map.map (toNamespace nss) units
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    hPutStrLn stderr $ "Units: " ++ (show . Map.keys . Map.filter (not . null) $ nss)
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    --writeFile "pas2c.log" $ unlines . map (\t -> show (fst t) ++ "\n" ++ (unlines . map ((:) '\t' . show) . snd $ t)) . Map.toList $ nss
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    mapM_ (toCFiles nss) u
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    where
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    toNamespace :: Map.Map String [Record] -> PascalUnit -> [Record]
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    toNamespace nss (System tvs) = 
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        currentScope $ execState (mapM_ (tvar2C True) tvs) (emptyState nss)
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    toNamespace _ (Program {}) = []
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    toNamespace nss (Unit _ interface _ _ _) = 
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        currentScope $ execState (interface2C interface) (emptyState nss)
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withState' :: (RenderState -> RenderState) -> State RenderState a -> State RenderState a
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withState' f sf = do
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    st <- liftM f get
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    let (a, s) = runState sf st
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    modify(\st -> st{
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        lastType = lastType s
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        , uniqCounter = uniqCounter s
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        , stringConsts = stringConsts s
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        })
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    return a
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withLastIdNamespace :: State RenderState Doc -> State RenderState Doc
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withLastIdNamespace f = do
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    li <- gets lastIdentifier
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    nss <- gets namespaces
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    withState' (\st -> st{currentScope = fromMaybe [] $ Map.lookup li (namespaces st)}) f
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withRecordNamespace :: String -> [(String, BaseType)] -> State RenderState Doc -> State RenderState Doc
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withRecordNamespace _ [] = error "withRecordNamespace: empty record"
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withRecordNamespace prefix recs = withState' f
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    where
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        f st = st{currentScope = records ++ currentScope st}
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        records = map (\(a, b) -> (map toLower a, (prefix ++ a, b))) recs
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toCFiles :: Map.Map String [Record] -> (String, PascalUnit) -> IO ()
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toCFiles _ (_, System _) = return ()
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toCFiles ns p@(fn, pu) = do
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    hPutStrLn stderr $ "Rendering '" ++ fn ++ "'..."
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    toCFiles' p
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    where
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    toCFiles' (fn, p@(Program {})) = writeFile (fn ++ ".c") $ (render2C initialState . pascal2C) p
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    toCFiles' (fn, (Unit unitId interface implementation _ _)) = do
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        let (a, s) = runState (id2C IOInsert (setBaseType BTUnit unitId) >> interface2C interface) initialState
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        writeFile (fn ++ ".h") $ "#pragma once\n\n#include \"pas2c.h\"\n\n" ++ (render (a $+$ text ""))
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        writeFile (fn ++ ".c") $ "#include \"" ++ fn ++ ".h\"\n" ++ (render2C s . implementation2C) implementation
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    initialState = emptyState ns
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    render2C :: RenderState -> State RenderState Doc -> String
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    render2C a = render . ($+$ empty) . flip evalState a
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usesFiles :: PascalUnit -> [String]
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usesFiles (Program _ (Implementation uses _) _) = "pas2cSystem" : uses2List uses
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usesFiles (Unit _ (Interface uses1 _) (Implementation uses2 _) _ _) = "pas2cSystem" : uses2List uses1 ++ uses2List uses2
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usesFiles (System {}) = []
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   164
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pascal2C :: PascalUnit -> State RenderState Doc
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pascal2C (Unit _ interface implementation init fin) =
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    liftM2 ($+$) (interface2C interface) (implementation2C implementation)
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pascal2C (Program _ implementation mainFunction) = do
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    impl <- implementation2C implementation
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    [main] <- tvar2C True 
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        (FunctionDeclaration (Identifier "main" BTInt) (SimpleType $ Identifier "int" BTInt) [] (Just (TypesAndVars [], mainFunction)))
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    return $ impl $+$ main
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   174
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interface2C :: Interface -> State RenderState Doc
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interface2C (Interface uses tvars) = liftM2 ($+$) (uses2C uses) (typesAndVars2C True tvars)
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implementation2C :: Implementation -> State RenderState Doc
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implementation2C (Implementation uses tvars) = do
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    u <- uses2C uses
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    tv <- typesAndVars2C True tvars
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    r <- renderStringConsts
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    return (u $+$ r $+$ tv)
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typesAndVars2C :: Bool -> TypesAndVars -> State RenderState Doc
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typesAndVars2C b (TypesAndVars ts) = liftM (vcat . map (<> semi) . concat) $ mapM (tvar2C b) ts
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setBaseType :: BaseType -> Identifier -> Identifier
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setBaseType bt (Identifier i _) = Identifier i bt
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uses2C :: Uses -> State RenderState Doc
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uses2C uses@(Uses unitIds) = do
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    mapM_ injectNamespace (Identifier "pas2cSystem" undefined : unitIds)
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    mapM_ (id2C IOInsert . setBaseType BTUnit) unitIds
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    return $ vcat . map (\i -> text $ "#include \"" ++ i ++ ".h\"") $ uses2List uses
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    where
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    injectNamespace (Identifier i _) = do
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        getNS <- gets (flip Map.lookup . namespaces)
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        let f = flip (foldl (flip (:))) (fromMaybe [] (getNS i))
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        modify (\s -> s{currentScope = f $ currentScope s})
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uses2List :: Uses -> [String]
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uses2List (Uses ids) = map (\(Identifier i _) -> i) ids
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id2C :: InsertOption -> Identifier -> State RenderState Doc
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id2C IOInsert (Identifier i t) = do
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    ns <- gets currentScope
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{--    case t of 
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        BTUnknown -> do
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            ns <- gets currentScope
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            error $ "id2C IOInsert: type BTUnknown for " ++ show i ++ "\nnamespace: " ++ show (take 100 ns)
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        _ -> do --}
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    modify (\s -> s{currentScope = (n, (i, t)) : currentScope s, lastIdentifier = n})
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    return $ text i
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    where
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        n = map toLower i
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id2C IOLookup (Identifier i t) = do
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    let i' = map toLower i
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    v <- gets $ find (\(a, _) -> a == i') . currentScope
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    ns <- gets currentScope
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    lt <- gets lastType
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    if isNothing v then 
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        error $ "Not defined: '" ++ i' ++ "'\n" ++ show lt ++ "\n" ++ show (take 100 ns)
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        else 
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        let vv = snd $ fromJust v in modify (\s -> s{lastType = snd vv, lastIdentifier = fst vv}) >> (return . text . fst $ vv)
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id2C IODeferred (Identifier i t) = do
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    let i' = map toLower i
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    v <- gets $ find (\(a, _) -> a == i') . currentScope
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   233
    if (isNothing v) then
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   234
        return $ text i
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   235
        else
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        return . text . fst . snd . fromJust $ v
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   237
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id2CTyped :: TypeDecl -> Identifier -> State RenderState Doc
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id2CTyped t (Identifier i _) = do
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    tb <- resolveType t
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    ns <- gets currentScope
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    case tb of 
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        BTUnknown -> do
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            ns <- gets currentScope
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            error $ "id2CTyped: type BTUnknown for " ++ show i ++ "\ntype: " ++ show t ++ "\nnamespace: " ++ show (take 100 ns)
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        _ -> return ()
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    id2C IOInsert (Identifier i tb)
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   248
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   249
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resolveType :: TypeDecl -> State RenderState BaseType
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resolveType st@(SimpleType (Identifier i _)) = do
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    let i' = map toLower i
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    v <- gets $ find (\(a, _) -> a == i') . currentScope
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    if isJust v then return . snd . snd $ fromJust v else return $ f i'
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    where
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    f "integer" = BTInt
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    f "pointer" = BTPointerTo BTVoid
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    f "boolean" = BTBool
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    f "float" = BTFloat
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    f "char" = BTChar
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    f "string" = BTString
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   262
    f _ = error $ "Unknown system type: " ++ show st
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resolveType (PointerTo (SimpleType (Identifier i _))) = return . BTPointerTo $ BTUnresolved (map toLower i)
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resolveType (PointerTo t) = liftM BTPointerTo $ resolveType t
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resolveType (RecordType tv mtvs) = do
6827
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   266
    tvs <- mapM f (concat $ tv : fromMaybe [] mtvs)
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   267
    return . BTRecord . concat $ tvs
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   268
    where
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        f :: TypeVarDeclaration -> State RenderState [(String, BaseType)]
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        f (VarDeclaration _ (ids, td) _) = mapM (\(Identifier i _) -> liftM ((,) i) $ resolveType td) ids
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resolveType (ArrayDecl (Just i) t) = do
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   272
    t' <- resolveType t
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    return $ BTArray i BTInt t' 
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resolveType (ArrayDecl Nothing t) = liftM (BTArray RangeInfinite BTInt) $ resolveType t
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resolveType (FunctionType t _) = liftM BTFunction $ resolveType t
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resolveType (DeriveType (InitHexNumber _)) = return BTInt
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resolveType (DeriveType (InitNumber _)) = return BTInt
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resolveType (DeriveType (InitFloat _)) = return BTFloat
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resolveType (DeriveType (InitString _)) = return BTString
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resolveType (DeriveType (InitBinOp {})) = return BTInt
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resolveType (DeriveType (InitPrefixOp {})) = return BTInt
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resolveType (DeriveType (BuiltInFunction{})) = return BTInt
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resolveType (DeriveType (InitReference (Identifier{}))) = return BTBool -- TODO: derive from actual type
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resolveType (DeriveType _) = return BTUnknown
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   285
resolveType (String _) = return BTString
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   286
resolveType VoidType = return BTVoid
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d45b6dbd2ad6 Move a bit further
unc0rr
parents: 6649
diff changeset
   287
resolveType (Sequence ids) = return $ BTEnum $ map (\(Identifier i _) -> map toLower i) ids
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   288
resolveType (RangeType _) = return $ BTVoid
6653
d45b6dbd2ad6 Move a bit further
unc0rr
parents: 6649
diff changeset
   289
resolveType (Set t) = liftM BTSet $ resolveType t
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   290
   
6834
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   291
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   292
fromPointer :: String -> BaseType -> State RenderState BaseType    
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   293
fromPointer s (BTPointerTo t) = f t
6834
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   294
    where
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   295
        f (BTUnresolved s) = do
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   296
            v <- gets $ find (\(a, _) -> a == s) . currentScope
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   297
            if isJust v then
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   298
                f . snd . snd . fromJust $ v
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   299
                else
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   300
                error $ "Unknown type " ++ show t ++ "\n" ++ s
6834
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   301
        f t = return t
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   302
fromPointer s t = do
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   303
    ns <- gets currentScope
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   304
    error $ "Dereferencing from non-pointer type " ++ show t ++ "\n" ++ s ++ "\n\n" ++ show (take 100 ns)
6834
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   305
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   306
    
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   307
functionParams2C params = liftM (hcat . punctuate comma . concat) $ mapM (tvar2C False) params
6834
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   308
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   309
fun2C :: Bool -> String -> TypeVarDeclaration -> State RenderState [Doc]
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   310
fun2C _ _ (FunctionDeclaration name returnType params Nothing) = do
6499
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   311
    t <- type2C returnType 
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   312
    t'<- gets lastType
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   313
    p <- withState' id $ functionParams2C params
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   314
    n <- id2C IOInsert $ setBaseType (BTFunction t') name
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   315
    return [t empty <+> n <> parens p]
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   316
    
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   317
fun2C True rv (FunctionDeclaration name returnType params (Just (tvars, phrase))) = do
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   318
    let res = docToLower $ text rv <> text "_result"
6836
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   319
    t <- type2C returnType
6837
a137733c5776 Much better types handling, work correctly with functions
unc0rr
parents: 6836
diff changeset
   320
    t'<- gets lastType
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   321
    n <- id2C IOInsert $ setBaseType (BTFunction t') name
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   322
    (p, ph) <- withState' (\st -> st{currentScope = (map toLower rv, (render res, t')) : currentScope st}) $ do
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   323
        p <- functionParams2C params
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   324
        ph <- liftM2 ($+$) (typesAndVars2C False tvars) (phrase2C' phrase)
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   325
        return (p, ph)
6836
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   326
    let phrasesBlock = case returnType of
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   327
            VoidType -> ph
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   328
            _ -> t empty <+> res <> semi $+$ ph $+$ text "return" <+> res <> semi
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   329
    return [ 
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   330
        t empty <+> n <> parens p
6425
1ef4192aa80d - Parse unions, sets, function type, packed arrays and some more imporvements to the parser. Now it parses uVariable, uConsts and even SDLh.pas
unc0rr
parents: 6417
diff changeset
   331
        $+$
6499
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   332
        text "{" 
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   333
        $+$ 
6836
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   334
        nest 4 phrasesBlock
6499
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   335
        $+$
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   336
        text "}"]
6425
1ef4192aa80d - Parse unions, sets, function type, packed arrays and some more imporvements to the parser. Now it parses uVariable, uConsts and even SDLh.pas
unc0rr
parents: 6417
diff changeset
   337
    where
6499
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   338
    phrase2C' (Phrases p) = liftM vcat $ mapM phrase2C p
6425
1ef4192aa80d - Parse unions, sets, function type, packed arrays and some more imporvements to the parser. Now it parses uVariable, uConsts and even SDLh.pas
unc0rr
parents: 6417
diff changeset
   339
    phrase2C' p = phrase2C p
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   340
    
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   341
fun2C False _ (FunctionDeclaration (Identifier name _) _ _ _) = error $ "nested functions not allowed: " ++ name
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   342
fun2C _ tv _ = error $ "fun2C: I don't render " ++ show tv
6618
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   343
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   344
tvar2C :: Bool -> TypeVarDeclaration -> State RenderState [Doc]
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   345
tvar2C b f@(FunctionDeclaration (Identifier name _) _ _ _) =
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   346
    fun2C b name f
6618
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   347
tvar2C _ td@(TypeDeclaration i' t) = do
6653
d45b6dbd2ad6 Move a bit further
unc0rr
parents: 6649
diff changeset
   348
    i <- id2CTyped t i'
6891
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   349
    tp <- case t of
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   350
        FunctionType {} -> type2C (PointerTo t)
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   351
        _ -> type2C t
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   352
    return [text "typedef" <+> tp i]
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   353
    
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   354
tvar2C _ (VarDeclaration isConst (ids, t) mInitExpr) = do
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   355
    t' <- liftM (((if isConst then text "const" else empty) <+>) . ) $ type2C t
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   356
    ie <- initExpr mInitExpr
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   357
    liftM (map(\i -> t' i <+> ie)) $ mapM (id2CTyped t) ids
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   358
    where
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   359
    initExpr Nothing = return $ empty
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   360
    initExpr (Just e) = liftM (text "=" <+>) (initExpr2C e)
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   361
    
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   362
tvar2C f (OperatorDeclaration op (Identifier i _) ret params body) = do
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   363
    r <- op2CTyped op (extractTypes params)
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   364
    fun2C f i (FunctionDeclaration r ret params body)
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   365
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   366
    
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   367
op2CTyped :: String -> [TypeDecl] -> State RenderState Identifier
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   368
op2CTyped op t = do
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   369
    t' <- liftM (render . hcat . punctuate (char '_') . map (\t -> t empty)) $ mapM type2C t
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   370
    bt <- gets lastType
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   371
    return $ case bt of
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   372
         BTRecord {} -> Identifier (t' ++ "_op_" ++ opStr) bt
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   373
         _ -> Identifier t' bt
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   374
    where 
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   375
    opStr = case op of
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   376
                    "+" -> "add"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   377
                    "-" -> "sub"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   378
                    "*" -> "mul"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   379
                    "/" -> "div"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   380
                    "=" -> "eq"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   381
                    "<" -> "lt"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   382
                    ">" -> "gt"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   383
                    _ -> error $ "op2CTyped: unknown op '" ++ op ++ "'"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   384
    
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   385
extractTypes :: [TypeVarDeclaration] -> [TypeDecl]
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   386
extractTypes = concatMap f
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   387
    where
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   388
        f (VarDeclaration _ (ids, t) _) = replicate (length ids) t
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   389
        f a = error $ "extractTypes: can't extract from " ++ show a
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   390
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   391
initExpr2C :: InitExpression -> State RenderState Doc
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   392
initExpr2C InitNull = return $ text "NULL"
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   393
initExpr2C (InitAddress expr) = liftM ((<>) (text "&")) (initExpr2C expr)
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   394
initExpr2C (InitPrefixOp op expr) = liftM (text (op2C op) <>) (initExpr2C expr)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   395
initExpr2C (InitBinOp op expr1 expr2) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   396
    e1 <- initExpr2C expr1
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   397
    e2 <- initExpr2C expr2
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   398
    return $ parens $ e1 <+> text (op2C op) <+> e2
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   399
initExpr2C (InitNumber s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   400
initExpr2C (InitFloat s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   401
initExpr2C (InitHexNumber s) = return $ text "0x" <> (text . map toLower $ s)
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   402
initExpr2C (InitString [a]) = return . quotes $ text [a]
6883
70aec33185e2 Support string constants
unc0rr
parents: 6880
diff changeset
   403
initExpr2C (InitString s) = return $ braces $ text ".s = " <> doubleQuotes (text s)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   404
initExpr2C (InitChar a) = return $ quotes $ text "\\x" <> text (showHex (read a) "")
6663
2c4151afad0c Workaround pointers to not yet defined types
unc0rr
parents: 6653
diff changeset
   405
initExpr2C (InitReference i) = id2C IOLookup i
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   406
initExpr2C (InitRecord fields) = do
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   407
    (fs :: [Doc]) <- mapM (\(Identifier a _, b) -> liftM (text "." <> text a <+> equals <+>) $ initExpr2C b) fields
6886
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   408
    return $ lbrace $+$ (nest 4 . vcat . punctuate comma $ fs) $+$ rbrace
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   409
initExpr2C (InitArray [value]) = initExpr2C value
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   410
initExpr2C (InitArray values) = liftM (braces . vcat . punctuate comma) $ mapM initExpr2C values
6891
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   411
initExpr2C r@(InitRange (Range i@(Identifier i' _))) = do
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   412
    id2C IOLookup i
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   413
    t <- gets lastType
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   414
    case t of
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   415
         BTEnum s -> return . int $ length s
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   416
         BTInt -> case i' of
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   417
                       "byte" -> return $ int 256
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   418
                       _ -> error $ "InitRange identifier: " ++ i'
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   419
         _ -> error $ "InitRange: " ++ show r
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   420
initExpr2C (InitRange (RangeFromTo (InitNumber "0") r)) = initExpr2C $ BuiltInFunction "succ" [r]
6893
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   421
initExpr2C (InitRange (RangeFromTo (InitChar "0") (InitChar r))) = initExpr2C $ BuiltInFunction "succ" [InitNumber r]
6891
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   422
initExpr2C (InitRange a) = error $ show a --return $ text "<<range>>"
6872
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   423
initExpr2C (InitSet []) = return $ text "0"
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   424
initExpr2C (InitSet a) = return $ text "<<set>>"
6887
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   425
initExpr2C (BuiltInFunction "low" [InitReference e]) = return $ 
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   426
    case e of
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   427
         (Identifier "LongInt" _) -> int (-2^31)
6893
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   428
         (Identifier "SmallInt" _) -> int (-2^15)
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   429
         _ -> error $ "BuiltInFunction 'low': " ++ show e
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   430
initExpr2C (BuiltInFunction "high" [e]) = do
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   431
    initExpr2C e
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   432
    t <- gets lastType
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   433
    case t of
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   434
         (BTArray i _ _) -> initExpr2C $ BuiltInFunction "pred" [InitRange i]
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   435
         a -> error $ "BuiltInFunction 'high': " ++ show a
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   436
initExpr2C (BuiltInFunction "succ" [BuiltInFunction "pred" [e]]) = initExpr2C e
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   437
initExpr2C (BuiltInFunction "pred" [BuiltInFunction "succ" [e]]) = initExpr2C e
6891
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   438
initExpr2C (BuiltInFunction "succ" [e]) = liftM (<> text " + 1") $ initExpr2C e
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   439
initExpr2C (BuiltInFunction "pred" [e]) = liftM (<> text " - 1") $ initExpr2C e
6887
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   440
initExpr2C b@(BuiltInFunction _ _) = error $ show b    
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   441
initExpr2C a = error $ "initExpr2C: don't know how to render " ++ show a
6391
bd5851ab3157 - Parse sets initialization
unc0rr
parents: 6355
diff changeset
   442
6887
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   443
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   444
range2C :: InitExpression -> State RenderState [Doc]
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   445
range2C (InitString [a]) = return [quotes $ text [a]]
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   446
range2C (InitRange (Range i)) = liftM (flip (:) []) $ id2C IOLookup i
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   447
range2C (InitRange (RangeFromTo (InitString [a]) (InitString [b]))) = return $ map (\i -> quotes $ text [i]) [a..b]
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   448
    
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   449
range2C a = liftM (flip (:) []) $ initExpr2C a
6391
bd5851ab3157 - Parse sets initialization
unc0rr
parents: 6355
diff changeset
   450
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   451
type2C :: TypeDecl -> State RenderState (Doc -> Doc)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   452
type2C (SimpleType i) = liftM (\i a -> i <+> a) $ id2C IOLookup i
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   453
type2C t = do
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   454
    r <- type2C' t
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   455
    rt <- resolveType t
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   456
    modify (\st -> st{lastType = rt})
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   457
    return r
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   458
    where
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   459
    type2C' VoidType = return (text "void" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   460
    type2C' (String l) = return (text ("string" ++ show l) <+>)
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   461
    type2C' (PointerTo (SimpleType i)) = liftM (\i a -> text "struct __" <> i <+> text "*" <+> a) $ id2C IODeferred i
6891
ab9843957664 Improve rendering of function types, ranges, and more
unc0rr
parents: 6887
diff changeset
   462
    type2C' (PointerTo t) = liftM (\t a -> t (parens $ text "*" <> a)) $ type2C t
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   463
    type2C' (RecordType tvs union) = do
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   464
        t <- withState' id $ mapM (tvar2C False) tvs
6886
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   465
        u <- unions
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   466
        return $ \i -> text "struct __" <> i <+> lbrace $+$ nest 4 ((vcat . map (<> semi) . concat $ t) $$ u) $+$ rbrace <+> i
6886
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   467
        where
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   468
            unions = case union of
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   469
                     Nothing -> return empty
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   470
                     Just a -> do
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   471
                         structs <- mapM struct2C a
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   472
                         return $ text "union" $+$ braces (nest 4 $ vcat structs) <> semi
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   473
            struct2C tvs = do
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   474
                t <- withState' id $ mapM (tvar2C False) tvs
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   475
                return $ text "struct" $+$ braces (nest 4 (vcat . map (<> semi) . concat $ t)) <> semi
6894
555a8d8db228 Some more progress with pas2c
unc0rr
parents: 6893
diff changeset
   476
    type2C' (RangeType r) = return (text "int" <+>)
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   477
    type2C' (Sequence ids) = do
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   478
        is <- mapM (id2C IOInsert . setBaseType bt) ids
6887
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   479
        return (text "enum" <+> (braces . vcat . punctuate comma . map (\(a, b) -> a <+> equals <+> text "0x" <> text (showHex b "")) $ zip is [1..]) <+>)
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   480
        where
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   481
            bt = BTEnum $ map (\(Identifier i _) -> map toLower i) ids
6894
555a8d8db228 Some more progress with pas2c
unc0rr
parents: 6893
diff changeset
   482
    type2C' (ArrayDecl Nothing t) = type2C (PointerTo t)
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   483
    type2C' (ArrayDecl (Just r) t) = do
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   484
        t' <- type2C t
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   485
        r' <- initExpr2C (InitRange r)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   486
        return $ \i -> t' i <> brackets r'
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   487
    type2C' (Set t) = return (text "<<set>>" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   488
    type2C' (FunctionType returnType params) = do
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   489
        t <- type2C returnType
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   490
        p <- withState' id $ functionParams2C params
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   491
        return (\i -> t empty <+> i <> parens p)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   492
    type2C' (DeriveType (InitBinOp {})) = return (text "int" <+>)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   493
    type2C' (DeriveType (InitPrefixOp _ i)) = type2C' (DeriveType i)
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   494
    type2C' (DeriveType (InitNumber _)) = return (text "int" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   495
    type2C' (DeriveType (InitHexNumber _)) = return (text "int" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   496
    type2C' (DeriveType (InitFloat _)) = return (text "float" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   497
    type2C' (DeriveType (BuiltInFunction {})) = return (text "int" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   498
    type2C' (DeriveType (InitString {})) = return (text "string255" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   499
    type2C' (DeriveType (InitReference {})) = return (text "<<some type>>" <+>)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   500
    type2C' (DeriveType a) = error $ "Can't derive type from " ++ show a
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   501
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   502
phrase2C :: Phrase -> State RenderState Doc
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   503
phrase2C (Phrases p) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   504
    ps <- mapM phrase2C p
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   505
    return $ text "{" $+$ (nest 4 . vcat $ ps) $+$ text "}"
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   506
phrase2C (ProcCall f@(FunCall {}) []) = liftM (<> semi) $ ref2C f
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   507
phrase2C (ProcCall ref params) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   508
    r <- ref2C ref
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   509
    ps <- mapM expr2C params
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   510
    return $ r <> parens (hsep . punctuate (char ',') $ ps) <> semi
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   511
phrase2C (IfThenElse (expr) phrase1 mphrase2) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   512
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   513
    p1 <- (phrase2C . wrapPhrase) phrase1
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   514
    el <- elsePart
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   515
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   516
        text "if" <> parens e $+$ p1 $+$ el
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   517
    where
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   518
    elsePart | isNothing mphrase2 = return $ empty
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   519
             | otherwise = liftM (text "else" $$) $ (phrase2C . wrapPhrase) (fromJust mphrase2)
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   520
phrase2C (Assignment ref expr) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   521
    r <- ref2C ref 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   522
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   523
    return $
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   524
        r <> text " = " <> e <> semi
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   525
phrase2C (WhileCycle expr phrase) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   526
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   527
    p <- phrase2C $ wrapPhrase phrase
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   528
    return $ text "while" <> parens e $$ p
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   529
phrase2C (SwitchCase expr cases mphrase) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   530
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   531
    cs <- mapM case2C cases
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   532
    d <- dflt
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   533
    return $ 
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   534
        text "switch" <> parens e $+$ braces (nest 4 . vcat $ cs ++ d)
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   535
    where
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   536
    case2C :: ([InitExpression], Phrase) -> State RenderState Doc
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   537
    case2C (e, p) = do
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   538
        ies <- mapM range2C e
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   539
        ph <- phrase2C p
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   540
        return $ 
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   541
             vcat (map (\i -> text "case" <+> i <> colon) . concat $ ies) <> nest 4 (ph $+$ text "break;")
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   542
    dflt | isNothing mphrase = return []
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   543
         | otherwise = do
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   544
             ph <- mapM phrase2C $ fromJust mphrase
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   545
             return [text "default:" <+> nest 4 (vcat ph)]
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   546
                                         
6845
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   547
phrase2C wb@(WithBlock ref p) = do
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   548
    r <- ref2C ref 
6845
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   549
    t <- gets lastType
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   550
    case t of
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   551
        (BTRecord rs) -> withRecordNamespace (render r ++ ".") rs $ phrase2C $ wrapPhrase p
6845
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   552
        a -> do
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   553
            ns <- gets currentScope
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   554
            error $ "'with' block referencing non-record type " ++ show a ++ "\n" ++ show wb ++ "\nnamespace: " ++ show (take 100 ns)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   555
phrase2C (ForCycle i' e1' e2' p) = do
6663
2c4151afad0c Workaround pointers to not yet defined types
unc0rr
parents: 6653
diff changeset
   556
    i <- id2C IOLookup i'
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   557
    e1 <- expr2C e1'
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   558
    e2 <- expr2C e2'
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   559
    ph <- phrase2C (wrapPhrase p)
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   560
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   561
        text "for" <> (parens . hsep . punctuate (char ';') $ [i <+> text "=" <+> e1, i <+> text "<=" <+> e2, text "++" <> i])
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   562
        $$
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   563
        ph
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   564
phrase2C (RepeatCycle e' p') = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   565
    e <- expr2C e'
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   566
    p <- phrase2C (Phrases p')
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   567
    return $ text "do" <+> p <+> text "while" <> parens (text "!" <> parens e) <> semi
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   568
phrase2C NOP = return $ text ";"
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   569
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   570
phrase2C (BuiltInFunctionCall [] (SimpleReference (Identifier "exit" BTUnknown))) = return $ text "return" <> semi
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   571
phrase2C (BuiltInFunctionCall [e] (SimpleReference (Identifier "exit" BTUnknown))) = liftM (\e -> text "return" <> e <> semi) $ expr2C e
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   572
phrase2C (BuiltInFunctionCall [e] (SimpleReference (Identifier "dec" BTUnknown))) = liftM (\e -> text "--" <> e <> semi) $ expr2C e
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   573
phrase2C (BuiltInFunctionCall [e1, e2] (SimpleReference (Identifier "dec" BTUnknown))) = liftM2 (\a b -> a <> text " -= " <> b <> semi) (expr2C e1) (expr2C e2)
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   574
phrase2C (BuiltInFunctionCall [e] (SimpleReference (Identifier "inc" BTUnknown))) = liftM (\e -> text "++" <> e <> semi) $ expr2C e
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   575
phrase2C (BuiltInFunctionCall [e1, e2] (SimpleReference (Identifier "inc" BTUnknown))) = liftM2 (\a b -> a <+> text "+=" <+> b <> semi) (expr2C e1) (expr2C e2)
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   576
phrase2C a = error $ "phrase2C: " ++ show a
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   577
6307
25cfd9f4a567 Even more improvements to the parser and converter
unc0rr
parents: 6277
diff changeset
   578
wrapPhrase p@(Phrases _) = p
25cfd9f4a567 Even more improvements to the parser and converter
unc0rr
parents: 6277
diff changeset
   579
wrapPhrase p = Phrases [p]
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   580
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   581
expr2C :: Expression -> State RenderState Doc
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   582
expr2C (Expression s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   583
expr2C (BinOp op expr1 expr2) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   584
    e1 <- expr2C expr1
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   585
    t1 <- gets lastType
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   586
    e2 <- expr2C expr2
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   587
    t2 <- gets lastType
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   588
    case (op2C op, t1, t2) of
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   589
        ("+", BTString, BTString) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strconcat" (BTFunction BTString))
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   590
        ("+", BTString, BTChar) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strappend" (BTFunction BTString))
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   591
        ("+", BTChar, BTString) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strprepend" (BTFunction BTString))
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   592
        ("==", BTString, _) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strcompare" (BTFunction BTBool))
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   593
        ("!=", BTString, _) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strncompare" (BTFunction BTBool))
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   594
        ("&", BTBool, _) -> return $ parens e1 <+> text "&&" <+> parens e2
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   595
        ("|", BTBool, _) -> return $ parens e1 <+> text "||" <+> parens e2
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   596
        (o, _, _) -> return $ parens e1 <+> text o <+> parens e2
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   597
expr2C (NumberLiteral s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   598
expr2C (FloatLiteral s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   599
expr2C (HexNumber s) = return $ text "0x" <> (text . map toLower $ s)
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   600
expr2C (StringLiteral [a]) = do
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   601
    modify(\s -> s{lastType = BTChar})
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   602
    return . quotes $ text [a]
6896
23b38e530967 Move all strings into constants to make them of string255 type
unc0rr
parents: 6895
diff changeset
   603
expr2C (StringLiteral s) = addStringConst s
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   604
expr2C (Reference ref) = ref2CF ref
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   605
expr2C (PrefixOp op expr) = liftM (text (op2C op) <>) (expr2C expr)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   606
expr2C Null = return $ text "NULL"
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   607
expr2C (CharCode a) = do
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   608
    modify(\s -> s{lastType = BTChar})
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   609
    return $ quotes $ text "\\x" <> text (showHex (read a) "")
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   610
expr2C (HexCharCode a) = return $ quotes $ text "\\x" <> text (map toLower a)
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   611
expr2C (SetExpression ids) = mapM (id2C IOLookup) ids >>= return . parens . hcat . punctuate (text " | ")
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   612
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   613
expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "ord" _))) = liftM parens $ expr2C e
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   614
expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "succ" _))) = liftM (<> text " + 1") $ expr2C e
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   615
expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "pred" _))) = liftM (<> text " - 1") $ expr2C e
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   616
expr2C (BuiltInFunCall params ref) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   617
    r <- ref2C ref 
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   618
    t <- gets lastType
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   619
    ps <- mapM expr2C params
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   620
    case t of
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   621
        BTFunction t' -> do
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   622
            modify (\s -> s{lastType = t'})
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   623
        _ -> error $ "BuiltInFunCall lastType: " ++ show t
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   624
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   625
        r <> parens (hsep . punctuate (char ',') $ ps)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   626
expr2C a = error $ "Don't know how to render " ++ show a
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   627
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   628
ref2CF :: Reference -> State RenderState Doc
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   629
ref2CF (SimpleReference name) = do
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   630
    i <- id2C IOLookup name
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   631
    t <- gets lastType
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   632
    case t of
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   633
         BTFunction _ -> return $ i <> parens empty
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   634
         _ -> return $ i
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   635
ref2CF r = ref2C r
6307
25cfd9f4a567 Even more improvements to the parser and converter
unc0rr
parents: 6277
diff changeset
   636
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   637
ref2C :: Reference -> State RenderState Doc
6854
873929cbd54b Normalize RecordFields before conversion. Helps with namespaces problem.
unc0rr
parents: 6853
diff changeset
   638
-- rewrite into proper form
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   639
ref2C (RecordField ref1 (ArrayElement exprs ref2)) = ref2C $ ArrayElement exprs (RecordField ref1 ref2)
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   640
ref2C (RecordField ref1 (Dereference ref2)) = ref2C $ Dereference (RecordField ref1 ref2)
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   641
ref2C (RecordField ref1 (RecordField ref2 ref3)) = ref2C $ RecordField (RecordField ref1 ref2) ref3
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   642
ref2C (RecordField ref1 (FunCall params ref2)) = ref2C $ FunCall params (RecordField ref1 ref2)
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   643
ref2C (ArrayElement (a:b:xs) ref) = ref2C $ ArrayElement (b:xs) (ArrayElement [a] ref)
6854
873929cbd54b Normalize RecordFields before conversion. Helps with namespaces problem.
unc0rr
parents: 6853
diff changeset
   644
-- conversion routines
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   645
ref2C ae@(ArrayElement [expr] ref) = do
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   646
    e <- expr2C expr
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   647
    r <- ref2C ref 
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   648
    t <- gets lastType
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   649
    ns <- gets currentScope
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   650
    case t of
6893
69cc0166be8d - Track array size to use for High function
unc0rr
parents: 6891
diff changeset
   651
         (BTArray _ _ t') -> modify (\st -> st{lastType = t'})
6836
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   652
         (BTString) -> modify (\st -> st{lastType = BTChar})
6872
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   653
         (BTPointerTo t) -> do
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   654
                t'' <- fromPointer (show t) =<< gets lastType
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   655
                case t'' of
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   656
                     BTChar -> modify (\st -> st{lastType = BTChar})
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   657
                     a -> error $ "Getting element of " ++ show a ++ "\nReference: " ++ show ae ++ "\n" ++ show (take 100 ns)
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   658
         a -> error $ "Getting element of " ++ show a ++ "\nReference: " ++ show ae ++ "\n" ++ show (take 100 ns)
6895
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   659
    case t of
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   660
         BTString ->  return $ r <> text ".s" <> brackets e
31def088a870 Many small improvements to pas2c
unc0rr
parents: 6894
diff changeset
   661
         _ -> return $ r <> brackets e
6663
2c4151afad0c Workaround pointers to not yet defined types
unc0rr
parents: 6653
diff changeset
   662
ref2C (SimpleReference name) = id2C IOLookup name
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   663
ref2C rf@(RecordField (Dereference ref1) ref2) = do
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   664
    r1 <- ref2C ref1 
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   665
    t <- fromPointer (show ref1) =<< gets lastType
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   666
    ns <- gets currentScope
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   667
    r2 <- case t of
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   668
        BTRecord rs -> withRecordNamespace "" rs $ ref2C ref2
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   669
        BTUnit -> withLastIdNamespace $ ref2C ref2
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   670
        a -> error $ "dereferencing from " ++ show a ++ "\n" ++ show rf ++ "\n" ++ show (take 100 ns)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   671
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   672
        r1 <> text "->" <> r2
6618
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   673
ref2C rf@(RecordField ref1 ref2) = do
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   674
    r1 <- ref2C ref1
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   675
    t <- gets lastType
6835
00b2fd32305d Better deriving, some fixes
unc0rr
parents: 6834
diff changeset
   676
    ns <- gets currentScope
6817
daaf0834c4d2 - Apply unit's namespace to current scope when referencing unit name
unc0rr
parents: 6816
diff changeset
   677
    r2 <- case t of
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   678
        BTRecord rs -> withRecordNamespace "" rs $ ref2C ref2
6826
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   679
        BTUnit -> withLastIdNamespace $ ref2C ref2
6835
00b2fd32305d Better deriving, some fixes
unc0rr
parents: 6834
diff changeset
   680
        a -> error $ "dereferencing from " ++ show a ++ "\n" ++ show rf ++ "\n" ++ show (take 100 ns)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   681
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   682
        r1 <> text "." <> r2
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   683
ref2C d@(Dereference ref) = do
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   684
    r <- ref2C ref
6855
807156c01475 Finish the toughest part of the converter. Now it knows types of everything, so could correctly recognize bitwise operators and type convertions.
unc0rr
parents: 6854
diff changeset
   685
    t <- fromPointer (show d) =<< gets lastType
6834
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   686
    modify (\st -> st{lastType = t})
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   687
    return $ (parens $ text "*" <> r)
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   688
ref2C f@(FunCall params ref) = do
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   689
    r <- ref2C ref
6826
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   690
    t <- gets lastType
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   691
    case t of
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   692
        BTFunction t' -> do
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   693
            ps <- liftM (parens . hsep . punctuate (char ',')) $ mapM expr2C params
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   694
            modify (\s -> s{lastType = t'})
6826
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   695
            return $ r <> ps
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   696
        _ -> case (ref, params) of
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   697
                  (SimpleReference i, [p]) -> ref2C $ TypeCast i p
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   698
                  _ -> error $ "ref2C FunCall erroneous type cast detected: " ++ show f ++ "\nType detected: " ++ show t
6826
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   699
        
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   700
ref2C (Address ref) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   701
    r <- ref2C ref
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   702
    return $ text "&" <> parens r
6902
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   703
ref2C (TypeCast t'@(Identifier i _) expr) = do
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   704
    case map toLower i of
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   705
        "pchar" -> ref2C $ FunCall [expr] (SimpleReference (Identifier "_pchar" $ BTPointerTo BTChar))
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   706
        a -> do
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   707
            e <- expr2C expr
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   708
            t <- id2C IOLookup t'    
7d4e5ce73b98 Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).
unc0rr
parents: 6896
diff changeset
   709
            return $ parens t <> e
6467
090269e528df - Improve parsing of prefix operators
unc0rr
parents: 6455
diff changeset
   710
ref2C (RefExpression expr) = expr2C expr
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   711
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   712
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   713
op2C :: String -> String
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   714
op2C "or" = "|"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   715
op2C "and" = "&"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   716
op2C "not" = "!"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   717
op2C "xor" = "^"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   718
op2C "div" = "/"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   719
op2C "mod" = "%"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   720
op2C "shl" = "<<"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   721
op2C "shr" = ">>"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   722
op2C "<>" = "!="
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   723
op2C "=" = "=="
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   724
op2C a = a
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   725