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-- automatic generation of wrappers for simple GSL special functions
import Text.ParserCombinators.Parsec
import System
import Data.List(intersperse, isPrefixOf)
import Data.Char(toUpper,isUpper,toLower)
data Type = Normal Ident | Pointer Ident deriving (Eq, Show)
type Ident = String
data Header = Header Type Ident [(Type,Ident)] deriving Show
headers f = case parse parseHeaders "" f of
Right l -> l
Left s -> error (show s)
rep (c,r) [] = []
rep (c,r) f@(x:xs)
| c `isPrefixOf` f = r ++ rep (c,r) (drop (length c) f)
| otherwise = x:(rep (c,r) xs)
fixlong [] = []
fixlong "\\" = []
fixlong ('\\':'\n':xs) = xs
fixlong (x:xs) = x : fixlong xs
safe (Header _ _ args) = all ok args
|| all ok (init args) && kn (last args)
where ok ((Normal s),_) | s `elem` ["double","float","int","gsl_mode_t"] = True
ok _ = False
kn ((Pointer "gsl_sf_result"),_) = True
kn ((Pointer "gsl_sf_result_e10"),_) = True
kn _ = False
fixC s = rep ("gsl_mode_t","int") $ rep ("gsl_sf_result","double") $ rep ("gsl_sf_result_e10","double") $ s
main = do
args <- getArgs
let name = args!!0
headerfile =
case args of
[n] -> "/usr/include/gsl/gsl_sf_"++n++".h"
[_,f] -> f
file <- readFile headerfile
putStrLn headerfile
--mapM_ print (headers $ fixlong file)
let parsed = (headers $ fixlong file)
writeFile (name ++".h") (fixC $ unlines $ map showC parsed)
--putStrLn ""
--mapM (\(Header _ n _) -> putStrLn (drop 7 n ++",")) parsed
--putStrLn ""
--mapM_ (putStrLn.showFull (name ++".h")) parsed
let exports = rep (")",") where") $ rep ("(\n","(\n ") $ rep (",\n",", ") $ unlines $ ["("]++intersperse "," (map (\(Header _ n _) -> hName n) (filter safe parsed))++[")"]
let defs = unlines $ map (showFull (name ++".h")) parsed
let imports = "\nimport Foreign(Ptr)\nimport Numeric.GSL.Special.Internal\n"
let mod = modhead name ++ "module Numeric.GSL.Special."++ upperFirst name++exports++imports++defs
writeFile (upperFirst name ++ ".hs") mod
google name = "<http://www.google.com/search?q="
++name
++"&as_sitesearch=www.gnu.org/software/gsl/manual&btnI=Lucky>"
modhead name = replicate 60 '-' ++ "\n"
++"{- |\n"
++"Module : Numeric.GSL.Special."++upperFirst name++"\n"
++"Copyright : (c) Alberto Ruiz 2006\n"
++"License : GPL-style\n"
++"Maintainer : Alberto Ruiz (aruiz at um dot es)\n"
++"Stability : provisional\n"
++"Portability : uses ffi\n"
++"\nWrappers for selected functions described at:\n\n"
++ google ( "gsl_sf_"++name++".h")
++"\n\n-}\n"
++ replicate 60 '-' ++ "\n\n"
upperFirst (x:xs) = toUpper x : xs
comment = do
string "/*"
closecomment
spaces
return "comment"
closecomment = try (string "*/")
<|> (do anyChar
closecomment)
ident = do
spaces
id <- many1 (noneOf "()[]* \n\t,;")
spaces
return id
comment' = between (char '(') (char ')') (many $ noneOf ")")
define = do
string "#"
closedefine
spaces
return "define"
closedefine = try (string "\n")
<|> (do anyChar
closedefine)
marks = do
try (string "__BEGIN_DECLS" >> spaces >> return "begin")
<|>
try (string "__END_DECLS" >> spaces >> return "end")
irrelevant =
try comment
<|>
try define
<|>
marks
parseHeaders = many parseHeader
parseHeader = do
spaces
many irrelevant
spaces
(res,name) <- typ
spaces
args <- between (char '(') (char ')') (sepBy typ (char ','))
spaces
char ';'
spaces
many irrelevant
return $ Header res name args
typ = try t1 <|> t2
symbol s = spaces >> string s >> spaces
t1 = do
t <- try (symbol "const" >> symbol "unsigned" >> ident) -- aaagh
<|>
try (symbol "const" >> ident)
<|>
try (symbol "unsigned" >> ident)
<|> ident
n <- ident
return (Normal t,n)
t2 = do
t <- ident
spaces
char '*'
spaces
n <- ident
return (Pointer t,n)
pure (Header _ _ args) | fst (last args) == Pointer "gsl_sf_result" = False
| fst (last args) == Pointer "gsl_sf_result_e10" = False
| otherwise = True
showC (Header t n args) = showCt t ++ " " ++ n ++ "(" ++ (concat $ intersperse "," $ map showCa args) ++ ");"
showCt (Normal s) = s
showCt (Pointer s) = s ++ "*"
showCa (t, a) = showCt t ++" "++ a
showH hc h@(Header t n args) = "foreign import ccall \""++hc++" "++n++"\" "++n++" :: "++ (concat$intersperse" -> "$map showHa args) ++" -> " ++ t'
where t' | pure h = showHt t
| otherwise = "IO("++showHt t++")"
showHt (Normal (s:ss)) = toUpper s : ss
showHt (Pointer "gsl_sf_result") = "Ptr Double"
showHt (Pointer "gsl_sf_result_e10") = "Ptr ()"
showHt (Pointer (s:ss)) = "Ptr "++toUpper s : ss
showHa (t,a) = showHt t
showFull hc h@(Header t n args) = "\n-- | wrapper for "++showC h
++"\n--\n-- "++google n ++"\n"
++ boiler h ++"\n"
++showH hc h
fixmd1 = rep ("Gsl_mode_t","Precision")
fixmd2 = rep ("mode"," (precCode mode)")
boiler h@(Header t n args) | fst (last args) == Pointer "gsl_sf_result" = boilerResult h
| fst (last args) == Pointer "gsl_sf_result_e10" = boilerResultE10 h
| any isMode args = boilerMode h
| otherwise = boilerBasic h
isMode (Normal "gsl_mode_t",_) = True
isMode _ = False
hName n = f $ drop 7 n
where f (s:ss) = toLower s : ss
boilerResult h@(Header t n args) =
hName n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$ map showHa (init args)) ++" -> " ++ "(Double,Double)\n" ++
hName n ++ " "++ initArgs args ++
" = createSFR \""++ hName n ++"\" $ " ++ n ++ " "++ (fixmd2 $ initArgs args)
boilerResultE10 h@(Header t n args) =
hName n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$ map showHa (init args)) ++" -> " ++ "(Double,Int,Double)\n" ++
hName n ++ " "++ initArgs args ++
" = createSFR_E10 \""++ hName n ++"\" $ " ++ n ++ " "++ (fixmd2 $ initArgs args)
boilerBasic h@(Header t n args) =
hName n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$map showHa args) ++" -> " ++showHt t ++ "\n" ++
hName n ++ " = " ++fixmd2 n
boilerMode h@(Header t n args) =
hName n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$ map showHa args) ++" -> " ++ showHt t++"\n" ++
hName n ++ " "++ allArgs args ++
" = " ++ n ++ " "++ (fixmd2 $ allArgs args)
cVar (v:vs) | isUpper v = toLower v : v : vs
| otherwise = v:vs
allArgs args = unwords (map (cVar.snd) args)
initArgs args = unwords (map (cVar.snd) (init args))
|
