1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
-- automatic generation of wrappers for simple GSL special functions
import Text.ParserCombinators.Parsec
import System
import Data.List(intersperse, isPrefixOf)
import Data.Char(toUpper)
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
file <- readFile (args!!1)
let name = args!!0
putStrLn (args!!1)
--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 _) -> drop 7 n) (filter safe parsed))++[")"]
let defs = unlines $ map (showFull (name ++".h")) parsed
let imports = "\nimport Foreign(Ptr)\nimport GSL.Special.Internal\n"
let mod = modhead name ++ "module GSL.Special."++ upperFirst name++exports++imports++defs
writeFile (upperFirst name ++ ".hs") mod
modhead name = replicate 60 '-' ++ "\n"
++"{- |\n"
++"Module : 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"
++"\n\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"++ 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
boilerResult h@(Header t n args) =
drop 7 n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$ map showHa (init args)) ++" -> " ++ "(Double,Double)\n" ++
drop 7 n ++ " "++(unwords (map snd (init args)))++
" = createSFR \""++ drop 7 n ++"\" $ " ++ n ++ " "++(fixmd2 $ unwords (map snd (init args)))
boilerResultE10 h@(Header t n args) =
drop 7 n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$ map showHa (init args)) ++" -> " ++ "(Double,Int,Double)\n" ++
drop 7 n ++ " "++(unwords (map snd (init args)))++
" = createSFR_E10 \""++ drop 7 n ++"\" $ " ++ n ++ " "++(fixmd2 $ unwords (map snd (init args)))
boilerBasic h@(Header t n args) =
drop 7 n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$map showHa args) ++" -> " ++showHt t ++ "\n" ++
drop 7 n ++ " = " ++fixmd2 n
boilerMode h@(Header t n args) =
drop 7 n++" :: "++ (fixmd1 $ concat $ intersperse" -> "$ map showHa args) ++" -> " ++ showHt t++"\n" ++
drop 7 n ++ " "++(unwords (map snd args))++
" = " ++ n ++ " "++(fixmd2 $ unwords (map snd args))
|
