author | Oranger |
Sat, 03 Dec 2011 14:36:36 +0100 | |
changeset 6477 | ad5741c252b9 |
parent 6474 | 42e9773eedfd |
child 6489 | e1f0058cfedd |
permissions | -rw-r--r-- |
6273 | 1 |
module Pas2C where |
2 |
||
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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 |
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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 PascalParser |
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import PascalUnitSyntaxTree |
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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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mapM_ toCFiles (Map.toList 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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toCFiles :: (String, PascalUnit) -> IO () |
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toCFiles (_, System) = return () |
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toCFiles 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") $ (render . pascal2C) p |
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toCFiles' (fn, (Unit _ interface implementation _ _)) = do |
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writeFile (fn ++ ".h") $ (render . interface2C) interface |
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writeFile (fn ++ ".c") $ (render . implementation2C) implementation |
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usesFiles :: PascalUnit -> [String] |
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usesFiles (Program _ (Implementation uses _) _) = uses2List uses |
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usesFiles (Unit _ (Interface uses1 _) (Implementation uses2 _) _ _) = uses2List uses1 ++ uses2List uses2 |
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pascal2C :: PascalUnit -> Doc |
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pascal2C (Unit _ interface implementation init fin) = |
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interface2C interface |
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$+$ |
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implementation2C implementation |
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pascal2C (Program _ implementation mainFunction) = |
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implementation2C implementation |
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$+$ |
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tvar2C True (FunctionDeclaration (Identifier "main") (SimpleType $ Identifier "int") [] (Just (TypesAndVars [], mainFunction))) |
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interface2C :: Interface -> Doc |
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interface2C (Interface uses tvars) = uses2C uses $+$ typesAndVars2C True tvars |
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implementation2C :: Implementation -> Doc |
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implementation2C (Implementation uses tvars) = uses2C uses $+$ typesAndVars2C True tvars |
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typesAndVars2C :: Bool -> TypesAndVars -> Doc |
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typesAndVars2C b (TypesAndVars ts) = vcat $ map (tvar2C b) ts |
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uses2C :: Uses -> Doc |
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uses2C uses = vcat $ map (\i -> text $ "#include \"" ++ i ++ ".h\"") $ uses2List uses |
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uses2List :: Uses -> [String] |
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uses2List (Uses ids) = map (\(Identifier i) -> i) ids |
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tvar2C :: Bool -> TypeVarDeclaration -> Doc |
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tvar2C _ (FunctionDeclaration (Identifier name) returnType params Nothing) = |
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type2C returnType <+> text name <> parens (hcat $ map (tvar2C False) params) <> text ";" |
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tvar2C True (FunctionDeclaration (Identifier name) returnType params (Just (tvars, phrase))) = |
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type2C returnType <+> text name <> parens (hcat $ map (tvar2C False) params) |
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$+$ |
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text "{" |
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$+$ nest 4 ( |
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typesAndVars2C False tvars |
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$+$ |
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phrase2C' phrase |
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108 |
) |
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$+$ |
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text "}" |
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where |
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phrase2C' (Phrases p) = vcat $ map phrase2C p |
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phrase2C' p = phrase2C p |
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tvar2C False (FunctionDeclaration (Identifier name) _ _ _) = error $ "nested functions not allowed: " ++ name |
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tvar2C _ (TypeDeclaration (Identifier i) t) = text "type" <+> text i <+> type2C t <> text ";" |
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tvar2C _ (VarDeclaration isConst (ids, t) mInitExpr) = |
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if isConst then text "const" else empty |
118 |
<+> |
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119 |
type2C t |
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120 |
<+> |
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121 |
(hsep . punctuate (char ',') . map (\(Identifier i) -> text i) $ ids) |
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122 |
<+> |
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123 |
initExpr mInitExpr |
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124 |
<> |
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125 |
text ";" |
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126 |
where |
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127 |
initExpr Nothing = empty |
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128 |
initExpr (Just e) = text "=" <+> initExpr2C e |
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tvar2C f (OperatorDeclaration op _ ret params body) = |
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130 |
tvar2C f (FunctionDeclaration (Identifier $ "<op " ++ op ++ ">") ret params body) |
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initExpr2C :: InitExpression -> Doc |
133 |
initExpr2C (InitBinOp op expr1 expr2) = parens $ (initExpr2C expr1) <+> op2C op <+> (initExpr2C expr2) |
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134 |
initExpr2C (InitNumber s) = text s |
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135 |
initExpr2C (InitFloat s) = text s |
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136 |
initExpr2C (InitHexNumber s) = text "0x" <> (text . map toLower $ s) |
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137 |
initExpr2C (InitString s) = doubleQuotes $ text s |
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138 |
initExpr2C (InitReference (Identifier i)) = text i |
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||
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initExpr2C _ = text "<<expression>>" |
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type2C :: TypeDecl -> Doc |
144 |
type2C UnknownType = text "void" |
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type2C (String l) = text $ "string" ++ show l |
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type2C (SimpleType (Identifier i)) = text i |
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type2C (PointerTo t) = type2C t <> text "*" |
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type2C (RecordType tvs union) = text "{" $+$ (nest 4 . vcat . map (tvar2C False) $ tvs) $+$ text "}" |
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type2C (RangeType r) = text "<<range type>>" |
150 |
type2C (Sequence ids) = text "<<sequence type>>" |
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151 |
type2C (ArrayDecl r t) = text "<<array type>>" |
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type2C (Set t) = text "<<set>>" |
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type2C (FunctionType returnType params) = text "<<function>>" |
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155 |
phrase2C :: Phrase -> Doc |
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phrase2C (Phrases p) = text "{" $+$ (nest 4 . vcat . map phrase2C $ p) $+$ text "}" |
6467 | 157 |
phrase2C (ProcCall f@(FunCall {}) []) = ref2C f <> semi |
6450 | 158 |
phrase2C (ProcCall ref params) = ref2C ref <> parens (hsep . punctuate (char ',') . map expr2C $ params) <> semi |
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phrase2C (IfThenElse (expr) phrase1 mphrase2) = text "if" <> parens (expr2C expr) $+$ (phrase2C . wrapPhrase) phrase1 $+$ elsePart |
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where |
161 |
elsePart | isNothing mphrase2 = empty |
|
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| otherwise = text "else" $$ (phrase2C . wrapPhrase) (fromJust mphrase2) |
6277 | 163 |
phrase2C (Assignment ref expr) = ref2C ref <> text " = " <> expr2C expr <> semi |
6307 | 164 |
phrase2C (WhileCycle expr phrase) = text "while" <> parens (expr2C expr) $$ (phrase2C $ wrapPhrase phrase) |
165 |
phrase2C (SwitchCase expr cases mphrase) = text "switch" <> parens (expr2C expr) <> text "of" $+$ (nest 4 . vcat . map case2C) cases |
|
6273 | 166 |
where |
6450 | 167 |
case2C :: ([InitExpression], Phrase) -> Doc |
168 |
case2C (e, p) = text "case" <+> parens (hsep . punctuate (char ',') . map initExpr2C $ e) <> char ':' <> nest 4 (phrase2C p $+$ text "break;") |
|
6355 | 169 |
phrase2C (WithBlock ref p) = text "namespace" <> parens (ref2C ref) $$ (phrase2C $ wrapPhrase p) |
170 |
phrase2C (ForCycle (Identifier i) e1 e2 p) = |
|
171 |
text "for" <> (parens . hsep . punctuate (char ';') $ [text i <+> text "=" <+> expr2C e1, text i <+> text "<=" <+> expr2C e2, text "++" <> text i]) |
|
172 |
$$ |
|
173 |
phrase2C (wrapPhrase p) |
|
174 |
phrase2C (RepeatCycle e p) = text "do" <+> phrase2C (Phrases p) <+> text "while" <> parens (text "!" <> parens (expr2C e)) |
|
6467 | 175 |
phrase2C NOP = text ";" |
6355 | 176 |
|
6273 | 177 |
|
6307 | 178 |
wrapPhrase p@(Phrases _) = p |
179 |
wrapPhrase p = Phrases [p] |
|
6273 | 180 |
|
6355 | 181 |
|
6273 | 182 |
expr2C :: Expression -> Doc |
183 |
expr2C (Expression s) = text s |
|
6307 | 184 |
expr2C (BinOp op expr1 expr2) = parens $ (expr2C expr1) <+> op2C op <+> (expr2C expr2) |
6277 | 185 |
expr2C (NumberLiteral s) = text s |
6467 | 186 |
expr2C (FloatLiteral s) = text s |
6277 | 187 |
expr2C (HexNumber s) = text "0x" <> (text . map toLower $ s) |
188 |
expr2C (StringLiteral s) = doubleQuotes $ text s |
|
189 |
expr2C (Reference ref) = ref2C ref |
|
6307 | 190 |
expr2C (PrefixOp op expr) = op2C op <+> expr2C expr |
6467 | 191 |
expr2C Null = text "NULL" |
192 |
expr2C (BuiltInFunCall params ref) = ref2C ref <> parens (hsep . punctuate (char ',') . map expr2C $ params) |
|
193 |
expr2C _ = text "<<expression>>" |
|
6273 | 194 |
|
6307 | 195 |
|
196 |
ref2C :: Reference -> Doc |
|
6317
83b93a2d2741
Improve parsing of complex references like "a^[b[c], d]"
unc0rr
parents:
6307
diff
changeset
|
197 |
ref2C (ArrayElement exprs ref) = ref2C ref <> (brackets . hcat) (punctuate comma $ map expr2C exprs) |
6307 | 198 |
ref2C (SimpleReference (Identifier name)) = text name |
199 |
ref2C (RecordField (Dereference ref1) ref2) = ref2C ref1 <> text "->" <> ref2C ref2 |
|
200 |
ref2C (RecordField ref1 ref2) = ref2C ref1 <> text "." <> ref2C ref2 |
|
201 |
ref2C (Dereference ref) = parens $ text "*" <> ref2C ref |
|
6317
83b93a2d2741
Improve parsing of complex references like "a^[b[c], d]"
unc0rr
parents:
6307
diff
changeset
|
202 |
ref2C (FunCall params ref) = ref2C ref <> parens (hsep . punctuate (char ',') . map expr2C $ params) |
6467 | 203 |
ref2C (Address ref) = text "&" <> parens (ref2C ref) |
204 |
ref2C (TypeCast (Identifier t) expr) = parens (text t) <> expr2C expr |
|
205 |
ref2C (RefExpression expr) = expr2C expr |
|
6355 | 206 |
|
6275 | 207 |
op2C "or" = text "|" |
208 |
op2C "and" = text "&" |
|
6307 | 209 |
op2C "not" = text "!" |
210 |
op2C "xor" = text "^" |
|
6275 | 211 |
op2C "div" = text "/" |
212 |
op2C "mod" = text "%" |
|
6307 | 213 |
op2C "shl" = text "<<" |
214 |
op2C "shr" = text ">>" |
|
6275 | 215 |
op2C "<>" = text "!=" |
6277 | 216 |
op2C "=" = text "==" |
6275 | 217 |
op2C a = text a |
6273 | 218 |
|
219 |
maybeVoid "" = "void" |
|
220 |
maybeVoid a = a |