tools/pas2c.hs
author unc0rr
Sat, 14 Apr 2012 22:40:23 +0400
changeset 6887 19d77932ea91
parent 6886 4463ee51c9ec
child 6891 ab9843957664
permissions -rw-r--r--
Render some builtin functions
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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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        namespaces :: Map.Map String [Record]
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    }
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emptyState = RenderState [] "" BTUnknown
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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{lastType = lastType s})
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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 . ($+$ text "") . 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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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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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) = liftM2 ($+$) (uses2C uses) (typesAndVars2C True tvars)
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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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    if (isNothing v) then
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        return $ text i
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        else
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        return . text . fst . snd . fromJust $ v
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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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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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    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
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    tvs <- mapM f (concat $ tv : fromMaybe [] mtvs)
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    return . BTRecord . concat $ tvs
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    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 _) t) = liftM (BTArray BTInt) $ resolveType t
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resolveType (ArrayDecl Nothing t) = liftM (BTArray 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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resolveType (String _) = return BTString
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resolveType VoidType = return BTVoid
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resolveType (Sequence ids) = return $ BTEnum $ map (\(Identifier i _) -> map toLower i) ids
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resolveType (RangeType _) = return $ BTVoid
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resolveType (Set t) = liftM BTSet $ resolveType t
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fromPointer :: String -> BaseType -> State RenderState BaseType    
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fromPointer s (BTPointerTo t) = f t
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   258
    where
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   259
        f (BTUnresolved s) = do
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            v <- gets $ find (\(a, _) -> a == s) . currentScope
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   261
            if isJust v then
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                f . snd . snd . fromJust $ v
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                else
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   264
                error $ "Unknown type " ++ show t ++ "\n" ++ s
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        f t = return t
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fromPointer s t = do
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    ns <- gets currentScope
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    error $ "Dereferencing from non-pointer type " ++ show t ++ "\n" ++ s ++ "\n\n" ++ show (take 100 ns)
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   270
    
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functionParams2C params = liftM (hcat . punctuate comma . concat) $ mapM (tvar2C False) params
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fun2C :: Bool -> String -> TypeVarDeclaration -> State RenderState [Doc]
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fun2C _ _ (FunctionDeclaration name returnType params Nothing) = do
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    t <- type2C returnType 
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    t'<- gets lastType
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    p <- withState' id $ functionParams2C params
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    n <- id2C IOInsert $ setBaseType (BTFunction t') name
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    return [t empty <+> n <> parens p]
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fun2C True rv (FunctionDeclaration name returnType params (Just (tvars, phrase))) = do
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    let res = docToLower $ text rv <> text "_result"
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diff changeset
   283
    t <- type2C returnType
6837
a137733c5776 Much better types handling, work correctly with functions
unc0rr
parents: 6836
diff changeset
   284
    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
   285
    n <- id2C IOInsert $ setBaseType (BTFunction t') name
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   286
    (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
   287
        p <- functionParams2C params
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   288
        ph <- liftM2 ($+$) (typesAndVars2C False tvars) (phrase2C' phrase)
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   289
        return (p, ph)
6836
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   290
    let phrasesBlock = case returnType of
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   291
            VoidType -> ph
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   292
            _ -> t empty <+> res <> semi $+$ ph $+$ text "return" <+> res <> semi
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   293
    return [ 
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   294
        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
   295
        $+$
6499
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   296
        text "{" 
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   297
        $+$ 
6836
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   298
        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
   299
        $+$
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   300
        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
   301
    where
6499
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   302
    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
   303
    phrase2C' p = phrase2C p
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   304
    
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   305
fun2C False _ (FunctionDeclaration (Identifier name _) _ _ _) = error $ "nested functions not allowed: " ++ name
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   306
fun2C _ tv _ = error $ "fun2C: I don't render " ++ show tv
6618
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   307
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   308
tvar2C :: Bool -> TypeVarDeclaration -> State RenderState [Doc]
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   309
tvar2C b f@(FunctionDeclaration (Identifier name _) _ _ _) =
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   310
    fun2C b name f
6618
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   311
tvar2C _ td@(TypeDeclaration i' t) = do
6653
d45b6dbd2ad6 Move a bit further
unc0rr
parents: 6649
diff changeset
   312
    i <- id2CTyped t i'
6499
33180b479efa Start converting into monadic code using Reader monad (will be used to store information about namespace)
unc0rr
parents: 6489
diff changeset
   313
    tp <- type2C t
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   314
    return [text "typedef" <+> tp i]
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   315
    
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   316
tvar2C _ (VarDeclaration isConst (ids, t) mInitExpr) = do
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   317
    t' <- liftM (((if isConst then text "const" else empty) <+>) . ) $ type2C t
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   318
    ie <- initExpr mInitExpr
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   319
    liftM (map(\i -> t' i <+> ie)) $ mapM (id2CTyped t) ids
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   320
    where
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   321
    initExpr Nothing = return $ empty
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   322
    initExpr (Just e) = liftM (text "=" <+>) (initExpr2C e)
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   323
    
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   324
tvar2C f (OperatorDeclaration op (Identifier i _) ret params body) = do
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   325
    r <- op2CTyped op (extractTypes params)
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   326
    fun2C f i (FunctionDeclaration r ret params body)
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   327
6517
67ea290ea843 Format code a bit
unc0rr
parents: 6516
diff changeset
   328
    
6880
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   329
op2CTyped :: String -> [TypeDecl] -> State RenderState Identifier
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   330
op2CTyped op t = do
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   331
    t' <- liftM (render . hcat . punctuate (char '_') . map (\t -> t empty)) $ mapM type2C t
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   332
    bt <- gets lastType
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   333
    return $ case bt of
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   334
         BTRecord {} -> Identifier (t' ++ "_op_" ++ opStr) bt
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   335
         _ -> Identifier t' bt
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   336
    where 
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   337
    opStr = case op of
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   338
                    "+" -> "add"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   339
                    "-" -> "sub"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   340
                    "*" -> "mul"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   341
                    "/" -> "div"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   342
                    "=" -> "eq"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   343
                    "<" -> "lt"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   344
                    ">" -> "gt"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   345
                    _ -> error $ "op2CTyped: unknown op '" ++ op ++ "'"
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   346
    
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   347
extractTypes :: [TypeVarDeclaration] -> [TypeDecl]
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   348
extractTypes = concatMap f
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   349
    where
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   350
        f (VarDeclaration _ (ids, t) _) = replicate (length ids) t
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   351
        f a = error $ "extractTypes: can't extract from " ++ show a
34d3bc7bd8b1 Support operators declarations
unc0rr
parents: 6878
diff changeset
   352
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   353
initExpr2C :: InitExpression -> State RenderState Doc
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   354
initExpr2C InitNull = return $ text "NULL"
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   355
initExpr2C (InitAddress expr) = liftM ((<>) (text "&")) (initExpr2C expr)
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   356
initExpr2C (InitPrefixOp op expr) = liftM (text (op2C op) <>) (initExpr2C expr)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   357
initExpr2C (InitBinOp op expr1 expr2) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   358
    e1 <- initExpr2C expr1
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   359
    e2 <- initExpr2C expr2
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   360
    return $ parens $ e1 <+> text (op2C op) <+> e2
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   361
initExpr2C (InitNumber s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   362
initExpr2C (InitFloat s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   363
initExpr2C (InitHexNumber s) = return $ text "0x" <> (text . map toLower $ s)
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   364
initExpr2C (InitString [a]) = return . quotes $ text [a]
6883
70aec33185e2 Support string constants
unc0rr
parents: 6880
diff changeset
   365
initExpr2C (InitString s) = return $ braces $ text ".s = " <> doubleQuotes (text s)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   366
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
   367
initExpr2C (InitReference i) = id2C IOLookup i
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   368
initExpr2C (InitRecord fields) = do
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   369
    (fs :: [Doc]) <- mapM (\(Identifier a _, b) -> liftM (text "." <> text a <+> equals <+>) $ initExpr2C b) fields
6886
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   370
    return $ lbrace $+$ (nest 4 . vcat . punctuate comma $ fs) $+$ rbrace
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   371
initExpr2C (InitArray [value]) = initExpr2C value
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   372
initExpr2C (InitArray values) = liftM (braces . vcat . punctuate comma) $ mapM initExpr2C values
6872
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   373
initExpr2C (InitRange (Range i)) = id2C IOLookup i
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   374
initExpr2C (InitRange (RangeFromTo (InitNumber "0") (InitNumber a))) = return . text $ show (read a + 1)
6872
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   375
initExpr2C (InitRange a) = return $ text "<<range>>"
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   376
initExpr2C (InitSet []) = return $ text "0"
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   377
initExpr2C (InitSet a) = return $ text "<<set>>"
6887
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   378
initExpr2C (BuiltInFunction "low" [InitReference e]) = return $ 
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   379
    case e of
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   380
         (Identifier "LongInt" _) -> int (-2^31)
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   381
         _ -> error $ show e
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   382
initExpr2C (BuiltInFunction "succ" [InitReference e]) = liftM (<> text " + 1") $ id2C IOLookup e
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   383
initExpr2C b@(BuiltInFunction _ _) = error $ show b    
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   384
initExpr2C a = error $ "initExpr2C: don't know how to render " ++ show a
6391
bd5851ab3157 - Parse sets initialization
unc0rr
parents: 6355
diff changeset
   385
6887
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   386
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   387
range2C :: InitExpression -> State RenderState [Doc]
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   388
range2C (InitString [a]) = return [quotes $ text [a]]
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   389
range2C (InitRange (Range i)) = liftM (flip (:) []) $ id2C IOLookup i
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   390
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
   391
    
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   392
range2C a = liftM (flip (:) []) $ initExpr2C a
6391
bd5851ab3157 - Parse sets initialization
unc0rr
parents: 6355
diff changeset
   393
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   394
type2C :: TypeDecl -> State RenderState (Doc -> Doc)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   395
type2C (SimpleType i) = liftM (\i a -> i <+> a) $ id2C IOLookup i
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   396
type2C t = do
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   397
    r <- type2C' t
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   398
    rt <- resolveType t
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   399
    modify (\st -> st{lastType = rt})
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   400
    return r
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   401
    where
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   402
    type2C' VoidType = return (text "void" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   403
    type2C' (String l) = return (text ("string" ++ show l) <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   404
    type2C' (PointerTo (SimpleType i)) = liftM (\i a -> text "struct" <+> i <+> text "*" <+> a) $ id2C IODeferred i
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   405
    type2C' (PointerTo t) = liftM (\t a -> t (text "*" <> a)) $ type2C t
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   406
    type2C' (RecordType tvs union) = do
6843
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   407
        t <- withState' id $ mapM (tvar2C False) tvs
6886
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   408
        u <- unions
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   409
        return $ \i -> text "struct" <+> lbrace $+$ nest 4 ((vcat . map (<> semi) . concat $ t) $$ u) $+$ rbrace <+> i
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   410
        where
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   411
            unions = case union of
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   412
                     Nothing -> return empty
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   413
                     Just a -> do
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   414
                         structs <- mapM struct2C a
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   415
                         return $ text "union" $+$ braces (nest 4 $ vcat structs) <> semi
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   416
            struct2C tvs = do
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   417
                t <- withState' id $ mapM (tvar2C False) tvs
4463ee51c9ec Render unions
unc0rr
parents: 6883
diff changeset
   418
                return $ text "struct" $+$ braces (nest 4 (vcat . map (<> semi) . concat $ t)) <> semi
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   419
    type2C' (RangeType r) = return (text "<<range type>>" <+>)
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   420
    type2C' (Sequence ids) = do
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   421
        is <- mapM (id2C IOInsert . setBaseType bt) ids
6887
19d77932ea91 Render some builtin functions
unc0rr
parents: 6886
diff changeset
   422
        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
   423
        where
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   424
            bt = BTEnum $ map (\(Identifier i _) -> map toLower i) ids
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   425
    type2C' (ArrayDecl Nothing t) = do
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   426
        t' <- type2C t
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   427
        return $ \i -> t' i <> brackets empty
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   428
    type2C' (ArrayDecl (Just r) t) = do
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   429
        t' <- type2C t
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   430
        r' <- initExpr2C (InitRange r)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   431
        return $ \i -> t' i <> brackets r'
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   432
    type2C' (Set t) = return (text "<<set>>" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   433
    type2C' (FunctionType returnType params) = do
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   434
        t <- type2C returnType
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   435
        p <- withState' id $ functionParams2C params
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   436
        return (\i -> t empty <+> i <> parens p)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   437
    type2C' (DeriveType (InitBinOp {})) = return (text "int" <+>)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   438
    type2C' (DeriveType (InitPrefixOp _ i)) = type2C' (DeriveType i)
6878
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   439
    type2C' (DeriveType (InitNumber _)) = return (text "int" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   440
    type2C' (DeriveType (InitHexNumber _)) = return (text "int" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   441
    type2C' (DeriveType (InitFloat _)) = return (text "float" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   442
    type2C' (DeriveType (BuiltInFunction {})) = return (text "int" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   443
    type2C' (DeriveType (InitString {})) = return (text "string255" <+>)
0af34406b83d Improve rendering of function types, arrays, and more
unc0rr
parents: 6875
diff changeset
   444
    type2C' (DeriveType (InitReference {})) = return (text "<<some type>>" <+>)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   445
    type2C' (DeriveType a) = error $ "Can't derive type from " ++ show a
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   446
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   447
phrase2C :: Phrase -> State RenderState Doc
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   448
phrase2C (Phrases p) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   449
    ps <- mapM phrase2C p
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   450
    return $ text "{" $+$ (nest 4 . vcat $ ps) $+$ text "}"
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   451
phrase2C (ProcCall f@(FunCall {}) []) = liftM (<> semi) $ ref2C f
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   452
phrase2C (ProcCall ref params) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   453
    r <- ref2C ref
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   454
    ps <- mapM expr2C params
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   455
    return $ r <> parens (hsep . punctuate (char ',') $ ps) <> semi
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   456
phrase2C (IfThenElse (expr) phrase1 mphrase2) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   457
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   458
    p1 <- (phrase2C . wrapPhrase) phrase1
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   459
    el <- elsePart
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   460
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   461
        text "if" <> parens e $+$ p1 $+$ el
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   462
    where
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   463
    elsePart | isNothing mphrase2 = return $ empty
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   464
             | otherwise = liftM (text "else" $$) $ (phrase2C . wrapPhrase) (fromJust mphrase2)
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   465
phrase2C (Assignment ref expr) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   466
    r <- ref2C ref 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   467
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   468
    return $
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   469
        r <> text " = " <> e <> semi
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   470
phrase2C (WhileCycle expr phrase) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   471
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   472
    p <- phrase2C $ wrapPhrase phrase
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   473
    return $ text "while" <> parens e $$ p
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   474
phrase2C (SwitchCase expr cases mphrase) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   475
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   476
    cs <- mapM case2C cases
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   477
    d <- dflt
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   478
    return $ 
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   479
        text "switch" <> parens e <> text "of" $+$ braces (nest 4 . vcat $ cs ++ d)
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   480
    where
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   481
    case2C :: ([InitExpression], Phrase) -> State RenderState Doc
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   482
    case2C (e, p) = do
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   483
        ies <- mapM range2C e
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   484
        ph <- phrase2C p
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   485
        return $ 
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   486
             vcat (map (\i -> text "case" <+> i <> colon) . concat $ ies) <> nest 4 (ph $+$ text "break;")
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   487
    dflt | isNothing mphrase = return []
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   488
         | otherwise = do
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   489
             ph <- mapM phrase2C $ fromJust mphrase
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   490
             return [text "default:" <+> nest 4 (vcat ph)]
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   491
                                         
6845
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   492
phrase2C wb@(WithBlock ref p) = do
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   493
    r <- ref2C ref 
6845
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   494
    t <- gets lastType
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   495
    case t of
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   496
        (BTRecord rs) -> withRecordNamespace (render r ++ ".") rs $ phrase2C $ wrapPhrase p
6845
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   497
        a -> do
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   498
            ns <- gets currentScope
3cbfc35f6c2e - Handle multidimensional arrays better
unc0rr
parents: 6843
diff changeset
   499
            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
   500
phrase2C (ForCycle i' e1' e2' p) = do
6663
2c4151afad0c Workaround pointers to not yet defined types
unc0rr
parents: 6653
diff changeset
   501
    i <- id2C IOLookup i'
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   502
    e1 <- expr2C e1'
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   503
    e2 <- expr2C e2'
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   504
    ph <- phrase2C (wrapPhrase p)
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   505
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   506
        text "for" <> (parens . hsep . punctuate (char ';') $ [i <+> text "=" <+> e1, i <+> text "<=" <+> e2, text "++" <> i])
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   507
        $$
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   508
        ph
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   509
phrase2C (RepeatCycle e' p') = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   510
    e <- expr2C e'
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   511
    p <- phrase2C (Phrases p')
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   512
    return $ text "do" <+> p <+> text "while" <> parens (text "!" <> parens e)
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   513
phrase2C NOP = return $ text ";"
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   514
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   515
6307
25cfd9f4a567 Even more improvements to the parser and converter
unc0rr
parents: 6277
diff changeset
   516
wrapPhrase p@(Phrases _) = p
25cfd9f4a567 Even more improvements to the parser and converter
unc0rr
parents: 6277
diff changeset
   517
wrapPhrase p = Phrases [p]
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   518
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   519
expr2C :: Expression -> State RenderState Doc
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   520
expr2C (Expression s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   521
expr2C (BinOp op expr1 expr2) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   522
    e1 <- expr2C expr1
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   523
    t1 <- gets lastType
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   524
    e2 <- expr2C expr2
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   525
    case (op2C op, t1) of
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   526
        ("+", BTString) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strconcat" (BTFunction BTString))
6872
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   527
        ("==", BTString) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strcompare" (BTFunction BTBool))
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   528
        ("!=", BTString) -> expr2C $ BuiltInFunCall [expr1, expr2] (SimpleReference $ Identifier "_strncompare" (BTFunction BTBool))
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   529
        ("&", BTBool) -> return $ parens $ e1 <+> text "&&" <+> e2
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   530
        ("|", BTBool) -> return $ parens $ e1 <+> text "||" <+> e2
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   531
        (o, _) -> return $ parens $ e1 <+> text o <+> e2
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   532
expr2C (NumberLiteral s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   533
expr2C (FloatLiteral s) = return $ text s
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   534
expr2C (HexNumber s) = return $ text "0x" <> (text . map toLower $ s)
6874
b9e2e509a42d Better handle switch statement
unc0rr
parents: 6872
diff changeset
   535
expr2C (StringLiteral [a]) = return . quotes $ text [a]
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   536
expr2C (StringLiteral s) = return $ doubleQuotes $ text s 
6277
627b5752733a A try to improve parser move (has regressions)
unc0rr
parents: 6275
diff changeset
   537
expr2C (Reference ref) = ref2C ref
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   538
expr2C (PrefixOp op expr) = liftM (text (op2C op) <>) (expr2C expr)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   539
expr2C Null = return $ text "NULL"
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   540
expr2C (BuiltInFunCall params ref) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   541
    r <- ref2C ref 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   542
    ps <- mapM expr2C params
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   543
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   544
        r <> parens (hsep . punctuate (char ',') $ ps)
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   545
expr2C (CharCode a) = return $ quotes $ text "\\x" <> text (showHex (read a) "")
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   546
expr2C (HexCharCode a) = return $ quotes $ text "\\x" <> text (map toLower a)
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   547
expr2C (SetExpression ids) = mapM (id2C IOLookup) ids >>= return . parens . hcat . punctuate (text " | ")
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   548
expr2C a = error $ "Don't know how to render " ++ show a
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   549
6307
25cfd9f4a567 Even more improvements to the parser and converter
unc0rr
parents: 6277
diff changeset
   550
6512
0df7f6697939 "System" unit to help converter
unc0rr
parents: 6511
diff changeset
   551
ref2C :: Reference -> State RenderState Doc
6854
873929cbd54b Normalize RecordFields before conversion. Helps with namespaces problem.
unc0rr
parents: 6853
diff changeset
   552
-- rewrite into proper form
6858
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   553
ref2C (RecordField ref1 (ArrayElement exprs ref2)) = ref2C $ ArrayElement exprs (RecordField ref1 ref2)
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   554
ref2C (RecordField ref1 (Dereference ref2)) = ref2C $ Dereference (RecordField ref1 ref2)
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   555
ref2C (RecordField ref1 (RecordField ref2 ref3)) = ref2C $ RecordField (RecordField ref1 ref2) ref3
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   556
ref2C (RecordField ref1 (FunCall params ref2)) = ref2C $ FunCall params (RecordField ref1 ref2)
608c8b057c3b Improve rendering into C
unc0rr
parents: 6855
diff changeset
   557
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
   558
-- conversion routines
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   559
ref2C ae@(ArrayElement exprs ref) = do
6835
00b2fd32305d Better deriving, some fixes
unc0rr
parents: 6834
diff changeset
   560
    es <- mapM expr2C exprs
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   561
    r <- ref2C ref 
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   562
    t <- gets lastType
6838
b1a0e7a52c04 More clean namespace, some fixes
unc0rr
parents: 6837
diff changeset
   563
    ns <- gets currentScope
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   564
    case t of
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   565
         (BTArray _ t') -> modify (\st -> st{lastType = t'})
6836
42382794b73f - Treat strings as arrays of chars
unc0rr
parents: 6835
diff changeset
   566
         (BTString) -> modify (\st -> st{lastType = BTChar})
6872
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   567
         (BTPointerTo t) -> do
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   568
                t'' <- fromPointer (show t) =<< gets lastType
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   569
                case t'' of
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   570
                     BTChar -> modify (\st -> st{lastType = BTChar})
0f6eef4a07c8 Better support for strings
unc0rr
parents: 6860
diff changeset
   571
                     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
   572
         a -> error $ "Getting element of " ++ show a ++ "\nReference: " ++ show ae ++ "\n" ++ show (take 100 ns)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   573
    return $ r <> (brackets . hcat) (punctuate comma es)
6663
2c4151afad0c Workaround pointers to not yet defined types
unc0rr
parents: 6653
diff changeset
   574
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
   575
ref2C rf@(RecordField (Dereference ref1) ref2) = do
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   576
    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
   577
    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
   578
    ns <- gets currentScope
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   579
    r2 <- case t of
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   580
        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
   581
        BTUnit -> withLastIdNamespace $ ref2C ref2
59da15acb2f2 Finally fix the bug with pointer declarations polluting namespace with bad records
unc0rr
parents: 6838
diff changeset
   582
        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
   583
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   584
        r1 <> text "->" <> r2
6618
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   585
ref2C rf@(RecordField ref1 ref2) = do
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   586
    r1 <- ref2C ref1
2d3232069c4b Propagate types on identifiers
unc0rr
parents: 6552
diff changeset
   587
    t <- gets lastType
6835
00b2fd32305d Better deriving, some fixes
unc0rr
parents: 6834
diff changeset
   588
    ns <- gets currentScope
6817
daaf0834c4d2 - Apply unit's namespace to current scope when referencing unit name
unc0rr
parents: 6816
diff changeset
   589
    r2 <- case t of
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   590
        BTRecord rs -> withRecordNamespace "" rs $ ref2C ref2
6826
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   591
        BTUnit -> withLastIdNamespace $ ref2C ref2
6835
00b2fd32305d Better deriving, some fixes
unc0rr
parents: 6834
diff changeset
   592
        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
   593
    return $ 
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   594
        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
   595
ref2C d@(Dereference ref) = do
6827
a0e152e68337 Dig into namespaces even more
unc0rr
parents: 6826
diff changeset
   596
    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
   597
    t <- fromPointer (show d) =<< gets lastType
6834
2af81d3b176d Resolve deferred type on dereference
unc0rr
parents: 6827
diff changeset
   598
    modify (\st -> st{lastType = t})
6859
cd0697c7e88b Unwind 'with' construction
unc0rr
parents: 6858
diff changeset
   599
    return $ (parens $ text "*" <> r)
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   600
ref2C (FunCall params ref) = do
6826
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   601
    ps <- liftM (parens . hsep . punctuate (char ',')) $ mapM expr2C params
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   602
    r <- ref2C ref
6826
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   603
    t <- gets lastType
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   604
    case t of
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   605
        BTFunction t -> do
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   606
            modify (\s -> s{lastType = t})
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   607
            return $ r <> ps
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   608
        _ -> return $ parens r <> ps
8fadeefdd352 Just some further work
unc0rr
parents: 6817
diff changeset
   609
        
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   610
ref2C (Address ref) = do
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   611
    r <- ref2C ref
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   612
    return $ text "&" <> parens r
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   613
ref2C (TypeCast t' expr) = do
6663
2c4151afad0c Workaround pointers to not yet defined types
unc0rr
parents: 6653
diff changeset
   614
    t <- id2C IOLookup t'
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   615
    e <- expr2C expr
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   616
    return $ parens t <> e
6467
090269e528df - Improve parsing of prefix operators
unc0rr
parents: 6455
diff changeset
   617
ref2C (RefExpression expr) = expr2C expr
6355
734fed7aefd3 Introduce initialization expressions
unc0rr
parents: 6317
diff changeset
   618
6509
648caa66991b Convert into Reader monad
unc0rr
parents: 6499
diff changeset
   619
6860
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   620
op2C :: String -> String
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   621
op2C "or" = "|"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   622
op2C "and" = "&"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   623
op2C "not" = "!"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   624
op2C "xor" = "^"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   625
op2C "div" = "/"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   626
op2C "mod" = "%"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   627
op2C "shl" = "<<"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   628
op2C "shr" = ">>"
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   629
op2C "<>" = "!="
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   630
op2C "=" = "=="
f4238c683ec7 Convert some operators
unc0rr
parents: 6859
diff changeset
   631
op2C a = a
6273
13262c6e5027 Starting pas2C using library called 'pretty'
unc0rr
parents:
diff changeset
   632