-{-# OPTIONS -fglasgow-exts #-}
+{-# OPTIONS -fffi -cpp #-}
------------------------------------------------------------------------
--- $Id: Main.hs,v 1.45 2003/02/11 04:32:06 sof Exp $
+-- $Id: Main.hs,v 1.59 2004/08/12 12:12:54 simonmar Exp $
--
-- Program for converting .hsc files to .hs files, by converting the
-- file into a C program which is run to generate the Haskell source.
--
-- See the documentation in the Users' Guide for more details.
-#if __GLASGOW_HASKELL__ >= 504
+#if __GLASGOW_HASKELL__ >= 504 || __NHC__ >= 114
import System.Console.GetOpt
#else
import GetOpt
#endif
-import Config
-import System (getProgName, getArgs, ExitCode(..), exitWith, exitFailure, system)
+import System (getProgName, getArgs, ExitCode(..), exitWith, system)
import Directory (removeFile,doesFileExist)
-import Monad (MonadPlus(..), liftM, liftM2, when, unless)
+import Monad (MonadPlus(..), liftM, liftM2, when)
import Char (isAlpha, isAlphaNum, isSpace, isDigit, toUpper, intToDigit, ord)
-import List (intersperse)
-import IO (hPutStrLn,stderr)
+import List (intersperse, isSuffixOf)
+import IO (hPutStr, hPutStrLn, stderr)
-#include "../../includes/config.h"
-
-#ifdef mingw32_HOST_OS
+#if defined(mingw32_HOST_OS)
import Foreign
-
-#if __GLASGOW_HASKELL__ >= 504
+#if __GLASGOW_HASKELL__ >= 504 || __NHC__ >= 114
import Foreign.C.String
#else
import CString
#endif
-
version :: String
-version = "hsc2hs-0.65"
+version = "hsc2hs version 0.66\n"
data Flag
= Help
| Output String
| Verbose
+template_flag :: Flag -> Bool
template_flag (Template _) = True
template_flag _ = False
options :: [OptDescr Flag]
options = [
- Option "t" ["template"] (ReqArg Template "FILE") "template file",
- Option "c" ["cc"] (ReqArg Compiler "PROG") "C compiler to use",
- Option "l" ["ld"] (ReqArg Linker "PROG") "linker to use",
- Option "C" ["cflag"] (ReqArg CompFlag "FLAG") "flag to pass to the C compiler",
- Option "I" [] (ReqArg (CompFlag . ("-I"++))
- "DIR") "passed to the C compiler",
- Option "L" ["lflag"] (ReqArg LinkFlag "FLAG") "flag to pass to the linker",
- Option "i" ["include"] (ReqArg include "FILE") "as if placed in the source",
- Option "D" ["define"] (ReqArg define "NAME[=VALUE]") "as if placed in the source",
- Option "o" ["output"] (ReqArg Output "FILE") "name of main output file",
- Option "" ["help"] (NoArg Help) "display this help and exit",
- Option "v" ["verbose"] (NoArg Verbose) "dump commands to stderr",
- Option "" ["version"] (NoArg Version) "output version information and exit",
- Option "" ["no-compile"] (NoArg NoCompile) "stop after writing *_hsc_make.c"]
+ Option ['o'] ["output"] (ReqArg Output "FILE")
+ "name of main output file",
+ Option ['t'] ["template"] (ReqArg Template "FILE")
+ "template file",
+ Option ['c'] ["cc"] (ReqArg Compiler "PROG")
+ "C compiler to use",
+ Option ['l'] ["ld"] (ReqArg Linker "PROG")
+ "linker to use",
+ Option ['C'] ["cflag"] (ReqArg CompFlag "FLAG")
+ "flag to pass to the C compiler",
+ Option ['I'] [] (ReqArg (CompFlag . ("-I"++)) "DIR")
+ "passed to the C compiler",
+ Option ['L'] ["lflag"] (ReqArg LinkFlag "FLAG")
+ "flag to pass to the linker",
+ Option ['i'] ["include"] (ReqArg include "FILE")
+ "as if placed in the source",
+ Option ['D'] ["define"] (ReqArg define "NAME[=VALUE]")
+ "as if placed in the source",
+ Option [] ["no-compile"] (NoArg NoCompile)
+ "stop after writing *_hsc_make.c",
+ Option ['v'] ["verbose"] (NoArg Verbose)
+ "dump commands to stderr",
+ Option ['?'] ["help"] (NoArg Help)
+ "display this help and exit",
+ Option ['V'] ["version"] (NoArg Version)
+ "output version information and exit" ]
main :: IO ()
main = do
- prog <- getProgName
- let header = "Usage: "++prog++" [OPTIONS] INPUT.hsc [...]"
+ prog <- getProgramName
+ let header = "Usage: "++prog++" [OPTIONS] INPUT.hsc [...]\n"
args <- getArgs
let (flags, files, errs) = getOpt Permute options args
return (add_opt flags)
case (files, errs) of
(_, _)
- | any isHelp flags_w_tpl -> putStrLn (usageInfo header options)
- | any isVersion flags_w_tpl -> putStrLn version
+ | any isHelp flags_w_tpl -> bye (usageInfo header options)
+ | any isVersion flags_w_tpl -> bye version
where
isHelp Help = True; isHelp _ = False
isVersion Version = True; isVersion _ = False
- ([], []) -> putStrLn (prog++": No input files")
- (files, []) -> mapM_ (processFile flags_w_tpl) files
- (_, errs) -> do { mapM_ putStrLn errs ;
- putStrLn (usageInfo header options) ;
- exitFailure }
+ ((_:_), []) -> mapM_ (processFile flags_w_tpl) files
+ (_, _ ) -> die (concat errs ++ usageInfo header options)
+
+getProgramName :: IO String
+getProgramName = liftM (`withoutSuffix` "-bin") getProgName
+ where str `withoutSuffix` suff
+ | suff `isSuffixOf` str = take (length str - length suff) str
+ | otherwise = str
+
+bye :: String -> IO a
+bye s = putStr s >> exitWith ExitSuccess
+
+die :: String -> IO a
+die s = hPutStr stderr s >> exitWith (ExitFailure 1)
processFile :: [Flag] -> String -> IO ()
processFile flags name
case parser of
Parser p -> case p (SourcePos file_name 1) s of
Success _ _ _ toks -> output flags file_name toks
- Failure (SourcePos name' line) msg -> do
- putStrLn (name'++":"++show line++": "++msg)
- exitFailure
+ Failure (SourcePos name' line) msg ->
+ die (name'++":"++show line++": "++msg++"\n")
------------------------------------------------------------------------
-- A deterministic parser which remembers the text which has been parsed.
output flags name toks = do
(outName, outDir, outBase) <- case [f | Output f <- flags] of
- []
- | not (null ext) &&
- last ext == 'c' -> return (dir++base++init ext, dir, base)
- | ext == ".hs" -> return (dir++base++"_out.hs", dir, base)
- | otherwise -> return (dir++base++".hs", dir, base)
- where
- (dir, file) = splitName name
- (base, ext) = splitExt file
+ [] -> if not (null ext) && last ext == 'c'
+ then return (dir++base++init ext, dir, base)
+ else
+ if ext == ".hs"
+ then return (dir++base++"_out.hs", dir, base)
+ else return (dir++base++".hs", dir, base)
+ where
+ (dir, file) = splitName name
+ (base, ext) = splitExt file
[f] -> let
(dir, file) = splitName f
(base, _) = splitExt file
let cProgName = outDir++outBase++"_hsc_make.c"
oProgName = outDir++outBase++"_hsc_make.o"
- progName = outDir++outBase++"_hsc_make" ++ progNameSuffix
+ progName = outDir++outBase++"_hsc_make"
+#if defined(mingw32_HOST_OS)
+-- This is a real hack, but the quoting mechanism used for calling the C preprocesseor
+-- via GHC has changed a few times, so this seems to be the only way... :-P * * *
+ ++ ".exe"
+#endif
outHFile = outBase++"_hsc.h"
outHName = outDir++outHFile
outCName = outDir++outBase++"_hsc.c"
- beVerbose = any (\ x -> case x of { Verbose{} -> True; _ -> False}) flags
+ beVerbose = any (\ x -> case x of { Verbose -> True; _ -> False}) flags
let execProgName
- | null outDir = '.':pathSep:progName
+ | null outDir = dosifyPath ("./" ++ progName)
| otherwise = progName
let specials = [(pos, key, arg) | Special pos key arg <- toks]
fixChar c | isAlphaNum c = toUpper c
| otherwise = '_'
- -- try locating GHC..on Win32, look in the vicinity of hsc2hs.
+ -- Try locating GHC..on Win32, look in the vicinity of hsc2hs.
+ -- Returns a native-format path
locateGhc def = do
mb <- getExecDir "bin/hsc2hs.exe"
case mb of
then return ghc_path
else return def
+ -- On a Win32 installation we execute the hsc2hs binary directly,
+ -- with no --cc flags, so we'll call locateGhc here, which will
+ -- succeed, via getExecDir.
+ --
+ -- On a Unix installation, we'll run the wrapper script hsc2hs.sh
+ -- (called plain hsc2hs in the installed tree), which will pass
+ -- a suitable C compiler via --cc
+ --
+ -- The in-place installation always uses the wrapper script,
+ -- (called hsc2hs-inplace, generated from hsc2hs.sh)
compiler <- case [c | Compiler c <- flags] of
[] -> locateGhc "ghc"
[c] -> return c
writeFile cProgName $
concatMap outFlagHeaderCProg flags++
concatMap outHeaderCProg specials++
- "\nint main (void)\n{\n"++
+ "\nint main (int argc, char *argv [])\n{\n"++
outHeaderHs flags (if needsH then Just outHName else Nothing) specials++
outHsLine (SourcePos name 0)++
concatMap outTokenHs toks++
" return 0;\n}\n"
- unless (null [() | NoCompile <- flags]) $ exitWith ExitSuccess
+ -- NOTE: hbc compiles "[() | NoCompile <- flags]" into wrong code,
+ -- so we use something slightly more complicated. :-P
+ when (any (\x -> case x of NoCompile -> True; _ -> False) flags) $
+ exitWith ExitSuccess
_ -> return ()
when needsH $ writeFile outHName $
- "#ifndef "++includeGuard++"\n\
- \#define "++includeGuard++"\n\
- \#if " ++
- "__GLASGOW_HASKELL__ && __GLASGOW_HASKELL__ < 409\n\
- \#include <Rts.h>\n\
- \#endif\n\
- \#include <HsFFI.h>\n\
- \#if __NHC__\n\
- \#undef HsChar\n\
- \#define HsChar int\n\
- \#endif\n"++
+ "#ifndef "++includeGuard++"\n" ++
+ "#define "++includeGuard++"\n" ++
+ "#if __GLASGOW_HASKELL__ && __GLASGOW_HASKELL__ < 409\n" ++
+ "#include <Rts.h>\n" ++
+ "#endif\n" ++
+ "#include <HsFFI.h>\n" ++
+ "#if __NHC__\n" ++
+ "#undef HsChar\n" ++
+ "#define HsChar int\n" ++
+ "#endif\n" ++
concatMap outFlagH flags++
concatMap outTokenH specials++
"#endif\n"
system s
onlyOne :: String -> IO a
-onlyOne what = do
- putStrLn ("Only one "++what++" may be specified")
- exitFailure
+onlyOne what = die ("Only one "++what++" may be specified\n")
outFlagHeaderCProg :: Flag -> String
outFlagHeaderCProg (Template t) = "#include \""++t++"\"\n"
(header, _:body) -> case break isSpace header of
(name, args) ->
outCLine pos++
- "#define hsc_"++name++"("++dropWhile isSpace args++") \
- \printf ("++joinLines body++");\n"
+ "#define hsc_"++name++"("++dropWhile isSpace args++") " ++
+ "printf ("++joinLines body++");\n"
_ -> ""
- where
+ where
joinLines = concat . intersperse " \\\n" . lines
outHeaderHs :: [Flag] -> Maybe String -> [(SourcePos, String, String)] -> String
outHeaderHs flags inH toks =
"#if " ++
- "__GLASGOW_HASKELL__ && __GLASGOW_HASKELL__ < 409\n\
- \ printf (\"{-# OPTIONS -optc-D" ++
- "__GLASGOW_HASKELL__=%d #-}\\n\", \
- \__GLASGOW_HASKELL__);\n\
- \#endif\n"++
+ "__GLASGOW_HASKELL__ && __GLASGOW_HASKELL__ < 409\n" ++
+ " printf (\"{-# OPTIONS -optc-D" ++
+ "__GLASGOW_HASKELL__=%d #-}\\n\", " ++
+ "__GLASGOW_HASKELL__);\n" ++
+ "#endif\n"++
case inH of
Nothing -> concatMap outFlag flags++concatMap outSpecial toks
Just f -> outOption ("-#include \""++f++"\"")
showCString s++"\");\n"
outTokenHs :: Token -> String
-outTokenHs (Text pos text) =
- case break (== '\n') text of
- (all, []) -> outText all
+outTokenHs (Text pos txt) =
+ case break (== '\n') txt of
+ (allTxt, []) -> outText allTxt
(first, _:rest) ->
outText (first++"\n")++
outHsLine pos++
(enum, rest) -> let
this = case break (== '=') $ dropWhile isSpace enum of
(name, []) ->
- " hsc_enum ("++t++", "++f++", \
- \hsc_haskellize (\""++name++"\"), "++
+ " hsc_enum ("++t++", "++f++", " ++
+ "hsc_haskellize (\""++name++"\"), "++
name++");\n"
(hsName, _:cName) ->
- " hsc_enum ("++t++", "++f++", \
- \printf (\"%s\", \""++hsName++"\"), "++
+ " hsc_enum ("++t++", "++f++", " ++
+ "printf (\"%s\", \""++hsName++"\"), "++
cName++");\n"
in this++enums rest
in enums afterF
's':'t':'r':'u':'c':'t':' ':_ -> arg++"\n"
't':'y':'p':'e':'d':'e':'f':' ':_ -> arg++"\n"
'i':'n':'l':'i':'n':'e':' ':_ ->
- "#ifdef __GNUC__\n\
- \extern\n\
- \#endif\n"++
+ "#ifdef __GNUC__\n" ++
+ "extern\n" ++
+ "#endif\n"++
arg++"\n"
_ -> "extern "++header++";\n"
- where header = takeWhile (\c -> c /= '{' && c /= '=') arg
+ where header = takeWhile (\c -> c /= '{' && c /= '=') arg
_ | conditional key -> outCLine pos++"#"++key++" "++arg++"\n"
_ -> ""
case span (\c -> c /= '{' && c /= '=') arg' of
(header, body) ->
outCLine pos++
- "#ifndef __GNUC__\n\
- \extern inline\n\
- \#endif\n"++
+ "#ifndef __GNUC__\n" ++
+ "extern inline\n" ++
+ "#endif\n"++
header++
- "\n#ifndef __GNUC__\n\
- \;\n\
- \#else\n"++
+ "\n#ifndef __GNUC__\n" ++
+ ";\n" ++
+ "#else\n"++
body++
"\n#endif\n"
_ -> outCLine pos++arg++"\n"
outCLine :: SourcePos -> String
outCLine (SourcePos name line) =
- "# "++show line++" \""++showCString (snd (splitName name))++"\"\n"
+ "#line "++show line++" \""++showCString (snd (splitName name))++"\"\n"
outHsLine :: SourcePos -> String
outHsLine (SourcePos name line) =
-- Cut and pasted from ghc/compiler/SysTools
-- Convert paths foo/baz to foo\baz on Windows
-
+dosifyPath :: String -> String
#if defined(mingw32_HOST_OS)
-subst a b ls = map (\ x -> if x == a then b else x) ls
-unDosifyPath xs = subst '\\' '/' xs
dosifyPath xs = subst '/' '\\' xs
+unDosifyPath :: String -> String
+unDosifyPath xs = subst '\\' '/' xs
+
+subst :: Eq a => a -> a -> [a] -> [a]
+subst a b ls = map (\ x -> if x == a then b else x) ls
+
getExecDir :: String -> IO (Maybe String)
-- (getExecDir cmd) returns the directory in which the current
-- executable, which should be called 'cmd', is running
dosifyPath xs = xs
getExecDir :: String -> IO (Maybe String)
-getExecDir s = do return Nothing
+getExecDir _ = return Nothing
#endif
projects / ghc-hetmet.git / blobdiff