Use 'GhcMonad' in DriverPipeline. Also haddockify a bit while we're at it.

[ghc-hetmet.git] / compiler / main / ErrUtils.lhs

diff --git a/compiler/main/ErrUtils.lhs b/compiler/main/ErrUtils.lhs
index a030a19..a0325bf 100644 (file)
--- a/compiler/main/ErrUtils.lhs
+++ b/compiler/main/ErrUtils.lhs
@@ -9,11 +9,13 @@ module ErrUtils (
        Severity(..),
 
        ErrMsg, WarnMsg, throwErrMsg, handleErrMsg,
+    ErrorMessages, WarningMessages,
        errMsgSpans, errMsgContext, errMsgShortDoc, errMsgExtraInfo,
        Messages, errorsFound, emptyMessages,
        mkErrMsg, mkPlainErrMsg, mkLongErrMsg, mkWarnMsg, mkPlainWarnMsg,
        printErrorsAndWarnings, printBagOfErrors, printBagOfWarnings,
     handleFlagWarnings,
+       warnIsErrorMsg,
 
        ghcExit,
        doIfSet, doIfSet_dyn, 
@@ -137,9 +139,15 @@ mkPlainWarnMsg locn msg = mkWarnMsg locn alwaysQualify msg
 
 type Messages = (Bag WarnMsg, Bag ErrMsg)
 
+type WarningMessages = Bag WarnMsg
+type ErrorMessages   = Bag ErrMsg
+
 emptyMessages :: Messages
 emptyMessages = (emptyBag, emptyBag)
 
+warnIsErrorMsg :: ErrMsg
+warnIsErrorMsg = mkPlainErrMsg noSrcSpan (text "\nFailing due to -Werror.\n")
+
 errorsFound :: DynFlags -> Messages -> Bool
 -- The dyn-flags are used to see if the user has specified
 -- -Werror, which says that warnings should be fatal