--- a/tools/pas2c.hs Wed Jul 25 10:56:14 2012 -0400
+++ b/tools/pas2c.hs Wed Jul 25 10:57:00 2012 -0400
@@ -71,13 +71,14 @@
escapeChar :: Char -> ShowS
escapeChar '"' s = "\\\"" ++ s
+escapeChar '\\' s = "\\\\" ++ s
escapeChar a s = a : s
strInit :: String -> Doc
strInit a = text "STRINIT" <> parens (doubleQuotes (text $ escapeStr a))
renderStringConsts :: State RenderState Doc
-renderStringConsts = liftM (vcat . map (\(a, b) -> text "const string255" <+> (text a) <+> text "=" <+> strInit b <> semi))
+renderStringConsts = liftM (vcat . map (\(a, b) -> text "static const string255" <+> (text a) <+> text "=" <+> strInit b <> semi))
$ gets stringConsts
docToLower :: Doc -> Doc
@@ -132,10 +133,16 @@
where
f = do
checkDuplicateFunDecls tvs
- mapM_ (tvar2C True) tvs
+ mapM_ (tvar2C True False True False) tvs
+ toNamespace nss (Redo tvs) = -- functions that are re-implemented, add prefix to all of them
+ currentScope $ execState f (emptyState nss){currentUnit = "fpcrtl_"}
+ where
+ f = do
+ checkDuplicateFunDecls tvs
+ mapM_ (tvar2C True False True False) tvs
toNamespace _ (Program {}) = Map.empty
toNamespace nss (Unit (Identifier i _) interface _ _ _) =
- currentScope $ execState (interface2C interface) (emptyState nss){currentUnit = map toLower i ++ "_"}
+ currentScope $ execState (interface2C interface True) (emptyState nss){currentUnit = map toLower i ++ "_"}
withState' :: (RenderState -> RenderState) -> State RenderState a -> State RenderState a
@@ -149,7 +156,6 @@
})
return a
-withLastIdNamespace :: State RenderState Doc -> State RenderState Doc
withLastIdNamespace f = do
li <- gets lastIdentifier
nss <- gets namespaces
@@ -165,49 +171,57 @@
toCFiles :: Map.Map String Records -> (String, PascalUnit) -> IO ()
toCFiles _ (_, System _) = return ()
+toCFiles _ (_, Redo _) = return ()
toCFiles ns p@(fn, pu) = do
hPutStrLn stdout $ "Rendering '" ++ fn ++ "'..."
toCFiles' p
where
- toCFiles' (fn, p@(Program {})) = writeFile (fn ++ ".c") $ (render2C initialState . pascal2C) p
+ toCFiles' (fn, p@(Program {})) = writeFile (fn ++ ".c") $ "#include \"fpcrtl.h\"\n" ++ (render2C initialState . pascal2C) p
toCFiles' (fn, (Unit unitId@(Identifier i _) interface implementation _ _)) = do
- let (a, s) = runState (id2C IOInsert (setBaseType BTUnit unitId) >> interface2C interface) initialState{currentUnit = map toLower i ++ "_"}
+ let (a, s) = runState (id2C IOInsert (setBaseType BTUnit unitId) >> interface2C interface True) initialState{currentUnit = map toLower i ++ "_"}
+ (a', s') = runState (id2C IOInsert (setBaseType BTUnit unitId) >> interface2C interface False) initialState{currentUnit = map toLower i ++ "_"}
writeFile (fn ++ ".h") $ "#pragma once\n\n#include \"pas2c.h\"\n\n" ++ (render (a $+$ text ""))
- writeFile (fn ++ ".c") $ "#include \"" ++ fn ++ ".h\"\n" ++ (render2C s . implementation2C) implementation
+ writeFile (fn ++ ".c") $ "#include \"fpcrtl.h\"\n\n#include \"" ++ fn ++ ".h\"\n" ++ render (a' $+$ text "") ++ (render2C s . implementation2C) implementation
initialState = emptyState ns
render2C :: RenderState -> State RenderState Doc -> String
render2C a = render . ($+$ empty) . flip evalState a
+
usesFiles :: PascalUnit -> [String]
-usesFiles (Program _ (Implementation uses _) _) = "pas2cSystem" : uses2List uses
-usesFiles (Unit _ (Interface uses1 _) (Implementation uses2 _) _ _) = "pas2cSystem" : uses2List uses1 ++ uses2List uses2
+usesFiles (Program _ (Implementation uses _) _) = ["pas2cSystem", "pas2cRedo"] ++ uses2List uses
+usesFiles (Unit _ (Interface uses1 _) (Implementation uses2 _) _ _) = ["pas2cSystem", "pas2cRedo"] ++ uses2List uses1 ++ uses2List uses2
usesFiles (System {}) = []
-
+usesFiles (Redo {}) = []
pascal2C :: PascalUnit -> State RenderState Doc
pascal2C (Unit _ interface implementation init fin) =
- liftM2 ($+$) (interface2C interface) (implementation2C implementation)
+ liftM2 ($+$) (interface2C interface True) (implementation2C implementation)
pascal2C (Program _ implementation mainFunction) = do
impl <- implementation2C implementation
- [main] <- tvar2C True
- (FunctionDeclaration (Identifier "main" BTInt) (SimpleType $ Identifier "int" BTInt) [] (Just (TypesAndVars [], mainFunction)))
+ [main] <- tvar2C True False True True (FunctionDeclaration (Identifier "main" BTInt) (SimpleType $ Identifier "int" BTInt) [VarDeclaration False False ([Identifier "argc" BTInt], SimpleType (Identifier "Integer" BTInt)) Nothing, VarDeclaration False False ([Identifier "argv" BTUnknown], SimpleType (Identifier "PPChar" BTUnknown)) Nothing] (Just (TypesAndVars [], mainFunction)))
return $ impl $+$ main
-
-interface2C :: Interface -> State RenderState Doc
-interface2C (Interface uses tvars) = do
+-- the second bool indicates whether do normal interface translation or generate variable declarations
+-- that will be inserted into implementation files
+interface2C :: Interface -> Bool -> State RenderState Doc
+interface2C (Interface uses tvars) True = do
u <- uses2C uses
- tv <- typesAndVars2C True tvars
+ tv <- typesAndVars2C True True True tvars
r <- renderStringConsts
return (u $+$ r $+$ tv)
+interface2C (Interface uses tvars) False = do
+ u <- uses2C uses
+ tv <- typesAndVars2C True False False tvars
+ r <- renderStringConsts
+ return tv
implementation2C :: Implementation -> State RenderState Doc
implementation2C (Implementation uses tvars) = do
u <- uses2C uses
- tv <- typesAndVars2C True tvars
+ tv <- typesAndVars2C True False True tvars
r <- renderStringConsts
return (u $+$ r $+$ tv)
@@ -220,17 +234,22 @@
ins (FunctionDeclaration (Identifier i _) _ _ _) m = Map.insertWith (+) (map toLower i) 1 m
ins _ m = m
-typesAndVars2C :: Bool -> TypesAndVars -> State RenderState Doc
-typesAndVars2C b (TypesAndVars ts) = do
+-- the second bool indicates whether declare variable as extern or not
+-- the third bool indicates whether include types or not
+
+typesAndVars2C :: Bool -> Bool -> Bool -> TypesAndVars -> State RenderState Doc
+typesAndVars2C b externVar includeType(TypesAndVars ts) = do
checkDuplicateFunDecls ts
- liftM (vcat . map (<> semi) . concat) $ mapM (tvar2C b) ts
+ liftM (vcat . map (<> semi) . concat) $ mapM (tvar2C b externVar includeType False) ts
setBaseType :: BaseType -> Identifier -> Identifier
setBaseType bt (Identifier i _) = Identifier i bt
uses2C :: Uses -> State RenderState Doc
uses2C uses@(Uses unitIds) = do
+
mapM_ injectNamespace (Identifier "pas2cSystem" undefined : unitIds)
+ mapM_ injectNamespace (Identifier "pas2cRedo" undefined : unitIds)
mapM_ (id2C IOInsert . setBaseType BTUnit) unitIds
return $ vcat . map (\i -> text $ "#include \"" ++ i ++ ".h\"") $ uses2List uses
where
@@ -256,6 +275,7 @@
return $ text i'
where
n = map toLower i
+
id2C IOLookup i = id2CLookup head i
id2C IOLookupLast i = id2CLookup last i
id2C (IOLookupFunction params) (Identifier i t) = do
@@ -279,7 +299,7 @@
let vv = head $ fromJust v in modify (\s -> s{lastType = snd vv, lastIdentifier = fst vv}) >> (return . text . fst $ vv)
id2CLookup :: ([Record] -> Record) -> Identifier -> State RenderState Doc
-id2CLookup f (Identifier i _) = do
+id2CLookup f (Identifier i t) = do
let i' = map toLower i
v <- gets $ Map.lookup i' . currentScope
lt <- gets lastType
@@ -363,7 +383,7 @@
error $ "Dereferencing from non-pointer type " ++ show t ++ "\n" ++ s
-functionParams2C params = liftM (hcat . punctuate comma . concat) $ mapM (tvar2C False) params
+functionParams2C params = liftM (hcat . punctuate comma . concat) $ mapM (tvar2C False False True True) params
numberOfDeclarations :: [TypeVarDeclaration] -> Int
numberOfDeclarations = sum . map cnt
@@ -421,12 +441,15 @@
(p, ph) <- withState' (\st -> st{currentScope = Map.insertWith un (map toLower rv) [(render res, t')] $ currentScope st
, currentFunctionResult = if isVoid then [] else render res}) $ do
p <- functionParams2C params
- ph <- liftM2 ($+$) (typesAndVars2C False tvars) (phrase2C' phrase)
+ ph <- liftM2 ($+$) (typesAndVars2C False False True tvars) (phrase2C' phrase)
return (p, ph)
let phrasesBlock = if isVoid then ph else t empty <+> res <> semi $+$ ph $+$ text "return" <+> res <> semi
-
- return [(if notDeclared && hasVars then funWithVarsToDefine n params else empty) $+$
+ let define = if hasVars then text "#ifndef" <+> text n $+$ funWithVarsToDefine n params $+$ text "#endif" else empty
+ return [
+ define
+ $+$
+ --(if notDeclared && hasVars then funWithVarsToDefine n params else empty) $+$
t empty <+> text (if hasVars then n ++ "__vars" else n) <> parens p
$+$
text "{"
@@ -443,37 +466,69 @@
fun2C False _ (FunctionDeclaration (Identifier name _) _ _ _) = error $ "nested functions not allowed: " ++ name
fun2C _ tv _ = error $ "fun2C: I don't render " ++ show tv
-tvar2C :: Bool -> TypeVarDeclaration -> State RenderState [Doc]
-tvar2C b f@(FunctionDeclaration (Identifier name _) _ _ _) =
- fun2C b name f
-tvar2C _ td@(TypeDeclaration i' t) = do
+-- the second bool indicates whether declare variable as extern or not
+-- the third bool indicates whether include types or not
+-- the fourth bool indicates whether ignore initialization or not (basically for dynamic arrays since we cannot do initialization in function params)
+tvar2C :: Bool -> Bool -> Bool -> Bool -> TypeVarDeclaration -> State RenderState [Doc]
+tvar2C b _ includeType _ f@(FunctionDeclaration (Identifier name _) _ _ _) = do
+ t <- fun2C b name f
+ if includeType then return t else return []
+tvar2C _ _ includeType _ td@(TypeDeclaration i' t) = do
i <- id2CTyped t i'
tp <- type2C t
- return [text "typedef" <+> tp i]
+ return $ if includeType then [text "typedef" <+> tp i] else []
-tvar2C _ (VarDeclaration True _ (ids, t) Nothing) = do
+tvar2C _ _ _ _ (VarDeclaration True _ (ids, t) Nothing) = do
t' <- liftM ((empty <+>) . ) $ type2C t
liftM (map(\i -> t' i)) $ mapM (id2CTyped (VarParamType t)) ids
-tvar2C _ (VarDeclaration _ isConst (ids, t) mInitExpr) = do
- t' <- liftM (((if isConst then text "const" else empty) <+>) . ) $ type2C t
+tvar2C _ externVar includeType ignoreInit (VarDeclaration _ isConst (ids, t) mInitExpr) = do
+ t' <- liftM (((if isConst then text "static const" else if externVar
+ then text "extern"
+ else empty)
+ <+>) . ) $ type2C t
ie <- initExpr mInitExpr
lt <- gets lastType
case (isConst, lt, ids, mInitExpr) of
(True, BTInt, [i], Just _) -> do
i' <- id2CTyped t i
- return [text "enum" <> braces (i' <+> ie)]
+ return $ if includeType then [text "enum" <> braces (i' <+> ie)] else []
(True, BTFloat, [i], Just e) -> do
i' <- id2CTyped t i
ie <- initExpr2C e
- return [text "#define" <+> i' <+> parens ie <> text "\n"]
+ return $ if includeType then [text "#define" <+> i' <+> parens ie <> text "\n"] else []
(_, BTFunction{}, _, Nothing) -> liftM (map(\i -> t' i)) $ mapM (id2CTyped t) ids
- _ -> liftM (map(\i -> t' i <+> ie)) $ mapM (id2CTyped t) ids
+ (_, BTArray r _ _, [i], _) -> do
+ i' <- id2CTyped t i
+ ie' <- return $ case (r, mInitExpr, ignoreInit) of
+ (RangeInfinite, Nothing, False) -> text "= NULL" -- force dynamic array to be initialized as NULL if not initialized at all
+ (_, _, _) -> ie
+ result <- liftM (map(\i -> varDeclDecision isConst includeType (t' i) ie')) $ mapM (id2CTyped t) ids
+ case (r, ignoreInit) of
+ (RangeInfinite, False) ->
+ -- if the array is dynamic, add dimension info to it
+ return $ [dimDecl] ++ result
+ where
+ arrayDimStr = show $ arrayDimension t
+ arrayDimInitExp = text ("={" ++ ".dim = " ++ arrayDimStr ++ ", .a = {0, 0, 0, 0}}")
+ dimDecl = varDeclDecision isConst includeType (text "fpcrtl_dimension_t" <+> i' <> text "_dimension_info") arrayDimInitExp
+
+ (_, _) -> return result
+
+ _ -> liftM (map(\i -> varDeclDecision isConst includeType (t' i) ie)) $ mapM (id2CTyped t) ids
where
initExpr Nothing = return $ empty
initExpr (Just e) = liftM (text "=" <+>) (initExpr2C e)
+ varDeclDecision True True varStr expStr = varStr <+> expStr
+ varDeclDecision False True varStr expStr = if externVar then varStr else varStr <+> expStr
+ varDeclDecision False False varStr expStr = varStr <+> expStr
+ varDeclDecision True False varStr expStr = empty
+ arrayDimension a = case a of
+ ArrayDecl Nothing t -> let a = arrayDimension t in if a > 3 then error "Dynamic array with dimension > 4 is not supported." else 1 + arrayDimension t
+ ArrayDecl _ _ -> error "Mixed dynamic array and static array are not supported."
+ _ -> 0
-tvar2C f (OperatorDeclaration op (Identifier i _) ret params body) = do
+tvar2C f _ _ _ (OperatorDeclaration op (Identifier i _) ret params body) = do
r <- op2CTyped op (extractTypes params)
fun2C f i (FunctionDeclaration r ret params body)
@@ -489,6 +544,7 @@
"-" -> "sub"
"*" -> "mul"
"/" -> "div"
+ "/(float)" -> "div"
"=" -> "eq"
"<" -> "lt"
">" -> "gt"
@@ -591,7 +647,7 @@
_ -> return $ \a -> i' <+> text "*" <+> a
type2C' (PointerTo t) = liftM (\t a -> t (parens $ text "*" <> a)) $ type2C t
type2C' (RecordType tvs union) = do
- t <- withState' f $ mapM (tvar2C False) tvs
+ t <- withState' f $ mapM (tvar2C False False True False) tvs
u <- unions
return $ \i -> text "struct __" <> i <+> lbrace $+$ nest 4 ((vcat . map (<> semi) . concat $ t) $$ u) $+$ rbrace <+> i
where
@@ -602,7 +658,7 @@
structs <- mapM struct2C a
return $ text "union" $+$ braces (nest 4 $ vcat structs) <> semi
struct2C tvs = do
- t <- withState' f $ mapM (tvar2C False) tvs
+ t <- withState' f $ mapM (tvar2C False False True False) tvs
return $ text "struct" $+$ braces (nest 4 (vcat . map (<> semi) . concat $ t)) <> semi
type2C' (RangeType r) = return (text "int" <+>)
type2C' (Sequence ids) = do
@@ -615,7 +671,7 @@
t' <- type2C t
lt <- gets lastType
ft <- case lt of
- BTFunction {} -> type2C (PointerTo t)
+ -- BTFunction {} -> type2C (PointerTo t)
_ -> return t'
r' <- initExpr2C (InitRange r)
return $ \i -> ft i <> brackets r'
@@ -675,15 +731,26 @@
e <- expr2C expr
return $ r <+> text "=" <+> e <> semi
_ -> error $ "Assignment to string from " ++ show lt
- (BTArray _ _ _, _) -> phrase2C $
- ProcCall (FunCall
- [
- Reference $ Address ref
- , Reference $ Address $ RefExpression expr
- , Reference $ FunCall [expr] (SimpleReference (Identifier "sizeof" BTUnknown))
- ]
- (SimpleReference (Identifier "memcpy" BTUnknown))
- ) []
+ (BTArray _ _ _, _) -> do
+ case expr of
+ Reference er -> do
+ exprRef <- ref2C er
+ exprT <- gets lastType
+ case exprT of
+ BTArray RangeInfinite _ _ ->
+ return $ text "FIXME: assign a dynamic array to an array"
+ BTArray _ _ _ -> phrase2C $
+ ProcCall (FunCall
+ [
+ Reference $ ref
+ , Reference $ RefExpression expr
+ , Reference $ FunCall [expr] (SimpleReference (Identifier "sizeof" BTUnknown))
+ ]
+ (SimpleReference (Identifier "memcpy" BTUnknown))
+ ) []
+ _ -> return $ text "FIXME: assign a non-specific value to an array"
+
+ _ -> return $ text "FIXME: dynamic array assignment 2"
_ -> do
e <- expr2C expr
return $ r <+> text "=" <+> e <> semi
@@ -704,7 +771,7 @@
ph <- phrase2C p
return $
vcat (map (\i -> text "case" <+> i <> colon) . concat $ ies) <> nest 4 (ph $+$ text "break;")
- dflt | isNothing mphrase = return []
+ dflt | isNothing mphrase = return [text "default: break;"] -- avoid compiler warning
| otherwise = do
ph <- mapM phrase2C $ fromJust mphrase
return [text "default:" <+> nest 4 (vcat ph)]
@@ -716,13 +783,15 @@
(BTRecord _ rs) -> withRecordNamespace (render r ++ ".") rs $ phrase2C $ wrapPhrase p
a -> do
error $ "'with' block referencing non-record type " ++ show a ++ "\n" ++ show wb
-phrase2C (ForCycle i' e1' e2' p) = do
+phrase2C (ForCycle i' e1' e2' p up) = do
i <- id2C IOLookup i'
e1 <- expr2C e1'
e2 <- expr2C e2'
ph <- phrase2C (wrapPhrase p)
+ cmp <- return $ if up == True then "<=" else ">="
+ inc <- return $ if up == True then "++" else "--"
return $
- text "for" <> (parens . hsep . punctuate (char ';') $ [i <+> text "=" <+> e1, i <+> text "<=" <+> e2, text "++" <> i])
+ text "for" <> (parens . hsep . punctuate (char ';') $ [i <+> text "=" <+> parens e1, i <+> text cmp <+> parens e2, text inc <> i])
$$
ph
phrase2C (RepeatCycle e' p') = do
@@ -777,12 +846,23 @@
case expr2 of
SetExpression set -> do
ids <- mapM (id2C IOLookup) set
+ modify(\s -> s{lastType = BTBool})
return . parens . hcat . punctuate (text " || ") . map (\i -> parens $ e1 <+> text "==" <+> i) $ ids
_ -> error "'in' against not set expression"
(o, _, _) | o `elem` boolOps -> do
modify(\s -> s{lastType = BTBool})
return $ parens e1 <+> text o <+> parens e2
- | otherwise -> return $ parens e1 <+> text o <+> parens e2
+ | otherwise -> do
+ o' <- return $ case o of
+ "/(float)" -> text "/(float)" -- pascal returns real value
+ _ -> text o
+ e1' <- return $ case (o, t1, t2) of
+ ("-", BTInt, BTInt) -> parens $ text "(int64_t)" <+> parens e1
+ _ -> parens e1
+ e2' <- return $ case (o, t1, t2) of
+ ("-", BTInt, BTInt) -> parens $ text "(int64_t)" <+> parens e2
+ _ -> parens e2
+ return $ e1' <+> o' <+> e2'
where
boolOps = ["==", "!=", "<", ">", "<=", ">="]
expr2C (NumberLiteral s) = do
@@ -806,7 +886,12 @@
BTRecord t _ -> do
i <- op2CTyped op [SimpleType (Identifier t undefined)]
ref2C $ FunCall [expr] (SimpleReference i)
- _ -> return $ text (op2C op) <> e
+ BTBool -> do
+ o <- return $ case op of
+ "not" -> text "!"
+ _ -> text (op2C op)
+ return $ o <> parens e
+ _ -> return $ text (op2C op) <> parens e
expr2C Null = return $ text "NULL"
expr2C (CharCode a) = do
modify(\s -> s{lastType = BTChar})
@@ -835,13 +920,13 @@
_ -> error $ "BuiltInFunCall 'high' from " ++ show e ++ "\ntype: " ++ show lt
expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "ord" _))) = liftM parens $ expr2C e
expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "succ" _))) = liftM (<> text " + 1") $ expr2C e
-expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "pred" _))) = liftM (<> text " - 1") $ expr2C e
+expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "pred" _))) = liftM (<> text " - (int64_t)1") $ expr2C e
expr2C (BuiltInFunCall [e] (SimpleReference (Identifier "length" _))) = do
e' <- expr2C e
lt <- gets lastType
modify (\s -> s{lastType = BTInt})
case lt of
- BTString -> return $ text "Length" <> parens e'
+ BTString -> return $ text "fpcrtl_Length" <> parens e'
BTArray RangeInfinite _ _ -> error $ "length() called on variable size array " ++ show e'
BTArray (RangeFromTo _ n) _ _ -> initExpr2C (BuiltInFunction "succ" [n])
_ -> error $ "length() called on " ++ show lt
@@ -864,7 +949,7 @@
case t of
BTFunction _ _ rt -> do
modify(\s -> s{lastType = rt})
- return $ i <> parens empty
+ return $ i <> parens empty --xymeng: removed parens
_ -> return $ i
ref2CF r@(RecordField (SimpleReference _) (SimpleReference _)) = do
i <- ref2C r
@@ -962,7 +1047,7 @@
op2C :: String -> String
op2C "or" = "|"
op2C "and" = "&"
-op2C "not" = "!"
+op2C "not" = "~"
op2C "xor" = "^"
op2C "div" = "/"
op2C "mod" = "%"
@@ -970,5 +1055,6 @@
op2C "shr" = ">>"
op2C "<>" = "!="
op2C "=" = "=="
+op2C "/" = "/(float)"
op2C a = a