Add a warning for tabs in source files

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

diff --git a/compiler/main/HeaderInfo.hs b/compiler/main/HeaderInfo.hs
index 090af1f..e124e37 100644 (file)
--- a/compiler/main/HeaderInfo.hs
+++ b/compiler/main/HeaderInfo.hs
@@ -15,8 +15,7 @@ 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 )
@@ -25,7 +24,7 @@ import StringBuffer   ( StringBuffer(..), hGetStringBuffer, hGetStringBufferBlock
                         , appendStringBuffers )
 import SrcLoc
 import FastString      ( mkFastString )
-import DynFlags        ( DynFlags )
+import DynFlags
 import ErrUtils
 import Util
 import Outputable
@@ -37,6 +36,8 @@ import Bag            ( emptyBag, listToBag )
 import Distribution.Compiler
 
 import Control.Exception
+import Control.Monad
+import System.Exit
 import System.IO
 import Data.List
 
@@ -65,7 +66,10 @@ 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