X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fmain%2FHeaderInfo.hs;h=334da824d7cf4fba98e2498c35363ab5cf06b27e;hp=090af1f1de3087c3c23a343aaa0eaab472900c14;hb=ad94d40948668032189ad22a0ad741ac1f645f50;hpb=326d5e5a5f9a52ea38917041d7b5f00cc8e21191

diff --git a/compiler/main/HeaderInfo.hs b/compiler/main/HeaderInfo.hs
index 090af1f..334da82 100644
--- a/compiler/main/HeaderInfo.hs
+++ b/compiler/main/HeaderInfo.hs
@@ -8,6 +8,13 @@
 --
 -----------------------------------------------------------------------------
 
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+--     http://hackage.haskell.org/trac/ghc/wiki/CodingStyle#Warnings
+-- for details
+
 module HeaderInfo ( getImportsFromFile, getImports
                   , getOptionsFromFile, getOptions
                   , optionsErrorMsgs ) where
@@ -15,17 +22,16 @@ module HeaderInfo ( getImportsFromFile, getImports
 #include "HsVersions.h"
 
 import Parser		( parseHeader )
-import Lexer		( P(..), ParseResult(..), mkPState, pragState
-                        , lexer, Token(..), PState(..) )
+import Lexer
 import FastString
 import HsSyn		( ImportDecl(..), HsModule(..) )
 import Module		( ModuleName, moduleName )
 import PrelNames        ( gHC_PRIM, mAIN_NAME )
 import StringBuffer	( StringBuffer(..), hGetStringBuffer, hGetStringBufferBlock
                         , appendStringBuffers )
+import Config
 import SrcLoc
-import FastString	( mkFastString )
-import DynFlags	( DynFlags )
+import DynFlags
 import ErrUtils
 import Util
 import Outputable
@@ -34,9 +40,9 @@ import Panic
 import Maybes
 import Bag		( emptyBag, listToBag )
 
-import Distribution.Compiler
-
 import Control.Exception
+import Control.Monad
+import System.Exit
 import System.IO
 import Data.List
 
@@ -65,7 +71,10 @@ getImports dflags buf filename = do
   let loc  = mkSrcLoc (mkFastString filename) 1 0
   case unP parseHeader (mkPState buf loc dflags) of
 	PFailed span err -> parseError span err
-	POk _ rdr_module -> 
+	POk pst rdr_module -> do
+          let ms = getMessages pst
+          printErrorsAndWarnings dflags ms
+          when (errorsFound dflags ms) $ exitWith (ExitFailure 1)
 	  case rdr_module of
 	    L _ (HsModule mb_mod _ imps _ _ _ _ _) ->
 	      let
@@ -173,11 +182,13 @@ getOptions' buf filename
 
 checkExtension :: Located FastString -> Located String
 checkExtension (L l ext)
-    = case reads (unpackFS ext) of
-        [] -> languagePragParseError l
-        (okExt,""):_ -> case extensionsToGHCFlag [okExt] of
-                          ([],[opt]) -> L l opt
-                          _ -> unsupportedExtnError l okExt
+-- Checks if a given extension is valid, and if so returns
+-- its corresponding flag. Otherwise it throws an exception.
+ =  let ext' = unpackFS ext in
+    if ext' `elem` supportedLanguages
+       || ext' `elem` (map ("No"++) supportedLanguages)
+    then L l ("-X"++ext')
+    else unsupportedExtnError l ext'
 
 languagePragParseError loc =
   pgmError (showSDoc (mkLocMessage loc (
@@ -186,7 +197,7 @@ languagePragParseError loc =
 unsupportedExtnError loc unsup =
   pgmError (showSDoc (mkLocMessage loc (
                 text "unsupported extension: " <>
-                (text.show) unsup)))
+                text unsup)))
 
 
 optionsErrorMsgs :: [String] -> [Located String] -> FilePath -> Messages