Interface file optimisation and removal of nameParent

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

diff --git a/compiler/main/Main.hs b/compiler/main/Main.hs
index 52097d9..55234e7 100644 (file)
--- a/compiler/main/Main.hs
+++ b/compiler/main/Main.hs
@@ -19,6 +19,7 @@ import CmdLineParser
 
 -- Implementations of the various modes (--show-iface, mkdependHS. etc.)
 import LoadIface       ( showIface )
+import HscMain          ( newHscEnv )
 import DriverPipeline  ( oneShot, compileFile )
 import DriverMkDepend  ( doMkDependHS )
 #ifdef GHCI
@@ -27,13 +28,13 @@ import InteractiveUI        ( ghciWelcomeMsg, interactiveUI )
 
 -- Various other random stuff that we need
 import Config          ( cProjectVersion, cBooterVersion, cProjectName )
-import Packages                ( dumpPackages, initPackages )
+import Packages                ( dumpPackages )
 import DriverPhases    ( Phase(..), isSourceFilename, anyHsc,
                          startPhase, isHaskellSrcFilename )
 import StaticFlags     ( staticFlags, v_Ld_inputs, parseStaticFlags )
 import DynFlags         ( defaultDynFlags )
 import BasicTypes      ( failed )
-import ErrUtils                ( Message, debugTraceMsg, putMsg )
+import ErrUtils                ( putMsg )
 import FastString      ( getFastStringTable, isZEncoded, hasZEncoding )
 import Outputable
 import Util
@@ -147,7 +148,7 @@ main =
        PrintLibdir     -> putStrLn (topDir dflags)
        ShowVersion     -> showVersion
         ShowNumVersion  -> putStrLn cProjectVersion
-        ShowInterface f -> showIface f
+        ShowInterface f -> doShowIface dflags f
        DoMake          -> doMake session srcs
        DoMkDependHS    -> doMkDependHS session (map fst srcs)
        StopBefore p    -> oneShot dflags p srcs
@@ -395,6 +396,15 @@ doMake sess srcs  = do
     when (failed ok_flag) (exitWith (ExitFailure 1))
     return ()
 
+
+-- ---------------------------------------------------------------------------
+-- --show-iface mode
+
+doShowIface :: DynFlags -> FilePath -> IO ()
+doShowIface dflags file = do
+  hsc_env <- newHscEnv dflags
+  showIface hsc_env file
+
 -- ---------------------------------------------------------------------------
 -- Various banners and verbosity output.