import Packages
import HeaderInfo
import DriverPhases
-import SysTools ( newTempName, addFilesToClean, copy )
+import SysTools
import qualified SysTools
import HscMain
import Finder
-- Sometimes, a compilation phase doesn't actually generate any output
-- (eg. the CPP phase when -fcpp is not turned on). If we end on this
-- stage, but we wanted to keep the output, then we have to explicitly
- -- copy the file.
+ -- copy the file, remembering to prepend a {-# LINE #-} pragma so that
+ -- further compilation stages can tell what the original filename was.
case output of
Temporary ->
return (dflags', output_fn)
_other ->
do final_fn <- get_output_fn dflags' stop_phase maybe_loc
- when (final_fn /= output_fn) $
- copy dflags ("Copying `" ++ output_fn ++ "' to `" ++ final_fn
- ++ "'") output_fn final_fn
+ when (final_fn /= output_fn) $ do
+ let msg = ("Copying `" ++ output_fn ++"' to `" ++ final_fn ++ "'")
+ line_prag = Just ("{-# LINE 1 \"" ++ input_fn ++ "\" #-}\n")
+ copyWithHeader dflags msg line_prag output_fn final_fn
return (dflags', final_fn)
-
+
pipeLoop :: DynFlags -> Phase -> Phase
runMkDLL,
touch, -- String -> String -> IO ()
- copy, -- String -> String -> String -> IO ()
+ copy,
+ copyWithHeader,
normalisePath, -- FilePath -> FilePath
-- Temporary-file management
touch dflags purpose arg =
runSomething dflags purpose (pgm_T dflags) [FileOption "" arg]
-copy :: DynFlags -> String -> String -> String -> IO ()
-copy dflags purpose from to = do
+copy :: DynFlags -> String -> FilePath -> FilePath -> IO ()
+copy dflags purpose from to = copyWithHeader dflags purpose Nothing from to
+
+copyWithHeader :: DynFlags -> String -> Maybe String -> FilePath -> FilePath
+ -> IO ()
+copyWithHeader dflags purpose maybe_header from to = do
showPass dflags purpose
h <- openFile to WriteMode
ls <- readFile from -- inefficient, but it'll do for now.
-- ToDo: speed up via slurping.
+ maybe (return ()) (hPutStr h) maybe_header
hPutStr h ls
hClose h
+
\end{code}
%************************************************************************