[project @ 2003-06-04 15:47:58 by simonmar]

[ghc-hetmet.git] / ghc / compiler / main / DriverPhases.hs

diff --git a/ghc/compiler/main/DriverPhases.hs b/ghc/compiler/main/DriverPhases.hs
index 3a7053f..2efe293 100644 (file)
--- a/ghc/compiler/main/DriverPhases.hs
+++ b/ghc/compiler/main/DriverPhases.hs
@@ -1,21 +1,26 @@
 -----------------------------------------------------------------------------
--- $Id: DriverPhases.hs,v 1.5 2001/02/27 12:36:37 rrt Exp $
+-- $Id: DriverPhases.hs,v 1.25 2003/06/04 15:47:59 simonmar Exp $
 --
 -- GHC Driver
 --
--- (c) Simon Marlow 2000
+-- (c) The University of Glasgow 2002
 --
 -----------------------------------------------------------------------------
 
+#include "../includes/config.h"
+
 module DriverPhases (
    Phase(..),
+   happensBefore,
    startPhase,         -- :: String -> Phase
    phaseInputExt,      -- :: Phase -> String
 
-   haskellish_file,
-   haskellish_suffix,
-   cish_file,
-   cish_suffix
+   haskellish_file, haskellish_suffix,
+   haskellish_src_file, haskellish_src_suffix,
+   objish_file, objish_suffix,
+   cish_file, cish_suffix,
+   isExtCore_file, extcoreish_suffix,
+   isSourceFile         -- :: FilePath -> Bool
  ) where
 
 import DriverUtil
@@ -36,29 +41,47 @@ import DriverUtil
 -}
 
 data Phase 
-       = MkDependHS    -- haskell dependency generation
-       | Unlit
+       = Unlit
        | Cpp
+       | HsPp
        | Hsc
        | Cc
        | HCc           -- Haskellised C (as opposed to vanilla C) compilation
-#ifdef ILX
-       | Ilx           -- .NET extended IL
-#endif
        | Mangle        -- assembly mangling, now done by a separate script.
        | SplitMangle   -- after mangler if splitting
        | SplitAs
        | As
-       | Ln 
+       | Ln
+#ifdef ILX
+        | Ilx2Il
+       | Ilasm
+#endif
   deriving (Eq, Show)
 
+-- Partial ordering on phases: we want to know which phases will occur before 
+-- which others.  This is used for sanity checking, to ensure that the
+-- pipeline will stop at some point (see DriverPipeline.runPipeline).
+x `happensBefore` y 
+       | x `elem` haskell_pipe = y `elem` tail (dropWhile (/= x) haskell_pipe)
+       | x `elem` c_pipe       = y `elem` tail (dropWhile (/= x) c_pipe)
+       | otherwise = False
+
+haskell_pipe = [Unlit,Cpp,HsPp,Hsc,HCc,Mangle,As,Ln]
+c_pipe       = [Cc,As,Ln]
+
 -- the first compilation phase for a given file is determined
 -- by its suffix.
 startPhase "lhs"   = Unlit
 startPhase "hs"    = Cpp
+startPhase "hscpp" = HsPp
 startPhase "hspp"  = Hsc
+startPhase "hcr"   = Hsc
 startPhase "hc"    = HCc
 startPhase "c"     = Cc
+startPhase "cpp"   = Cc
+startPhase "C"     = Cc
+startPhase "cc"    = Cc
+startPhase "cxx"   = Cc
 startPhase "raw_s" = Mangle
 startPhase "s"     = As
 startPhase "S"     = As
@@ -69,22 +92,40 @@ startPhase _       = Ln        -- all unknown file types
 -- the input requirements of the next phase.
 phaseInputExt Unlit       = "lhs"
 phaseInputExt Cpp         = "lpp"      -- intermediate only
+phaseInputExt HsPp        = "hscpp"
 phaseInputExt Hsc         = "hspp"
 phaseInputExt HCc         = "hc"
 phaseInputExt Cc          = "c"
-#ifdef ILX
-phaseInputExt Ilx         = "ilx"
-#endif
 phaseInputExt Mangle      = "raw_s"
 phaseInputExt SplitMangle = "split_s"  -- not really generated
 phaseInputExt As          = "s"
 phaseInputExt SplitAs     = "split_s"   -- not really generated
 phaseInputExt Ln          = "o"
-phaseInputExt MkDependHS  = "dep"
+#ifdef ILX
+phaseInputExt Ilx2Il      = "ilx"
+phaseInputExt Ilasm       = "il"
+#endif
+
+haskellish_suffix     = (`elem` [ "hs", "lhs", "hspp", "hscpp", "hcr", "hc", "raw_s" ])
+haskellish_src_suffix = (`elem` [ "hs", "lhs", "hspp", "hscpp", "hcr"])
+cish_suffix           = (`elem` [ "c", "cpp", "C", "cc", "cxx", "s", "S" ])
+extcoreish_suffix     = (`elem` [ "hcr" ])
 
-haskellish_suffix = (`elem` [ "hs", "hspp", "lhs", "hc" ])
-cish_suffix       = (`elem` [ "c", "s", "S" ])  -- maybe .cc et al.??
+-- Use the appropriate suffix for the system on which 
+-- the GHC-compiled code will run
+#if mingw32_TARGET_OS || cygwin32_TARGET_OS
+objish_suffix     = (`elem` [ "o", "O", "obj", "OBJ" ])
+#else
+objish_suffix     = (`elem` [ "o" ])
+#endif
 
-haskellish_file f = haskellish_suffix suf where (_,suf) = splitFilename f
-cish_file f       = cish_suffix suf       where (_,suf) = splitFilename f
+haskellish_file     = haskellish_suffix     . getFileSuffix
+haskellish_src_file = haskellish_src_suffix . getFileSuffix
+cish_file           = cish_suffix           . getFileSuffix
+isExtCore_file      = extcoreish_suffix     . getFileSuffix
+objish_file         = objish_suffix         . getFileSuffix
 
+isSourceFile :: FilePath -> Bool
+isSourceFile   f    =
+   haskellish_file f ||
+   cish_file   f