-----------------------------------------------------------------------------
--- $Id: DriverPipeline.hs,v 1.88 2001/07/11 14:50:49 sof Exp $
+-- $Id: DriverPipeline.hs,v 1.89 2001/07/11 19:48:07 sof Exp $
--
-- GHC Driver
--
deriving (Eq, Show)
genPipeline
- :: GhcMode -- when to stop
- -> String -- "stop after" flag (for error messages)
- -> Bool -- True => output is persistent
- -> HscLang -- preferred output language for hsc
- -> String -- original filename
+ :: GhcMode -- when to stop
+ -> String -- "stop after" flag (for error messages)
+ -> Bool -- True => output is persistent
+ -> HscLang -- preferred output language for hsc
+ -> (FilePath, String) -- original filename & its suffix
-> IO [ -- list of phases to run for this file
(Phase,
IntermediateFileType, -- keep the output from this phase?
String) -- output file suffix
]
-genPipeline todo stop_flag persistent_output lang filename
+genPipeline todo stop_flag persistent_output lang (filename,suffix)
= do
split <- readIORef v_Split_object_files
mangle <- readIORef v_Do_asm_mangling
let
----------- ----- ---- --- -- -- - - -
- (_basename, suffix) = splitFilename filename
-
start = startPhase suffix
-- special case for mkdependHS: .hspp files go through MkDependHS
runPipeline
:: [ (Phase, IntermediateFileType, String) ] -- phases to run
- -> String -- input file
+ -> (String,String) -- input file
-> Bool -- doing linking afterward?
-> Bool -- take into account -o when generating output?
- -> IO String -- return final filename
+ -> IO (String, String) -- return final filename
-runPipeline pipeline input_fn do_linking use_ofile
- = pipeLoop pipeline input_fn do_linking use_ofile basename suffix
- where (basename, suffix) = splitFilename input_fn
+runPipeline pipeline (input_fn,suffix) do_linking use_ofile
+ = pipeLoop pipeline (input_fn,suffix) do_linking use_ofile basename suffix
+ where (basename, _) = splitFilename input_fn
pipeLoop [] input_fn _ _ _ _ = return input_fn
pipeLoop ((phase, keep, o_suffix):phases)
- input_fn do_linking use_ofile orig_basename orig_suffix
+ (input_fn,real_suff) do_linking use_ofile orig_basename orig_suffix
= do
output_fn <- outputFileName (null phases) keep o_suffix
Nothing -> do
let (_,keep,final_suffix) = last phases
ofile <- outputFileName True keep final_suffix
- return ofile
+ return (ofile, final_suffix)
-- carry on ...
- Just fn -> pipeLoop phases fn do_linking use_ofile orig_basename orig_suffix
+ Just fn ->
+ {-
+ Notice that in order to keep the invariant that we can
+ determine a compilation pipeline's 'start phase' just
+ by looking at the input filename, the input filename
+ to the next stage/phase is associated here with the suffix
+ of the output file, *even* if it does not have that
+ suffix in reality.
+
+ Why is this important? Because we may run a compilation
+ pipeline in stages (cf. Main.main.compileFile's two stages),
+ so when generating the next stage we need to be precise
+ about what kind of file (=> suffix) is given as input.
+
+ [Not having to generate a pipeline in stages seems like
+ the right way to go, but I've punted on this for now --sof]
+
+ -}
+ pipeLoop phases (fn, o_suffix) do_linking use_ofile
+ orig_basename orig_suffix
where
outputFileName last_phase keep suffix
= do o_file <- readIORef v_Output_file
ASSERT(haskellish_src_file filename)
do restoreDynFlags -- Restore to state of last save
pipeline <- genPipeline (StopBefore Hsc) ("preprocess") False
- defaultHscLang filename
- runPipeline pipeline filename False{-no linking-} False{-no -o flag-}
+ defaultHscLang (filename, getFileSuffix filename)
+ (fn,_) <- runPipeline pipeline (filename,getFileSuffix filename)
+ False{-no linking-} False{-no -o flag-}
+ return fn
-----------------------------------------------------------------------------
-- Compile a single module, under the control of the compilation manager.
-- we're in batch mode: finish the compilation pipeline.
_other -> do pipe <- genPipeline (StopBefore Ln) "" True
- hsc_lang output_fn
+ hsc_lang (output_fn, getFileSuffix output_fn)
-- runPipeline takes input_fn so it can split off
-- the base name and use it as the base of
-- the output object file.
let (basename, suffix) = splitFilename input_fn
- o_file <- pipeLoop pipe output_fn False False
- basename suffix
+ (o_file,_) <-
+ pipeLoop pipe (output_fn, getFileSuffix output_fn)
+ False False
+ basename suffix
o_time <- getModificationTime o_file
return ([DotO o_file], o_time)
| stub_c_exists = do
-- compile the _stub.c file w/ gcc
let stub_c = hscStubCOutName dflags
- pipeline <- genPipeline (StopBefore Ln) "" True defaultHscLang stub_c
- stub_o <- runPipeline pipeline stub_c False{-no linking-}
- False{-no -o option-}
-
+ pipeline <- genPipeline (StopBefore Ln) "" True defaultHscLang (stub_c,"c")
+ (stub_o,_) <- runPipeline pipeline (stub_c,"c") False{-no linking-}
+ False{-no -o option-}
return (Just stub_o)
projects / ghc-hetmet.git / blobdiff