Severity(..),
ErrMsg, WarnMsg,
+ ErrorMessages, WarningMessages,
errMsgSpans, errMsgContext, errMsgShortDoc, errMsgExtraInfo,
Messages, errorsFound, emptyMessages,
- mkErrMsg, mkWarnMsg, mkPlainErrMsg, mkLongErrMsg,
+ mkErrMsg, mkPlainErrMsg, mkLongErrMsg, mkWarnMsg, mkPlainWarnMsg,
printErrorsAndWarnings, printBagOfErrors, printBagOfWarnings,
handleFlagWarnings,
+ warnIsErrorMsg,
ghcExit,
doIfSet, doIfSet_dyn,
#include "HsVersions.h"
import Bag ( Bag, bagToList, isEmptyBag, emptyBag )
-import SrcLoc ( SrcSpan )
import Util ( sortLe )
import Outputable
-import SrcLoc ( srcSpanStart, noSrcSpan )
+import SrcLoc
import DynFlags ( DynFlags(..), DynFlag(..), dopt )
import StaticFlags ( opt_ErrorSpans )
import Control.Monad
import System.Exit ( ExitCode(..), exitWith )
-import Data.Dynamic
import Data.List
import System.IO
-- NB Pretty.Doc not SDoc: we deal with the printing style (in ptic
-- whether to qualify an External Name) at the error occurrence
--- So we can throw these things as exceptions
-errMsgTc :: TyCon
-errMsgTc = mkTyCon "ErrMsg"
-{-# NOINLINE errMsgTc #-}
-instance Typeable ErrMsg where
-#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ < 603
- typeOf _ = mkAppTy errMsgTc []
-#else
- typeOf _ = mkTyConApp errMsgTc []
-#endif
+instance Show ErrMsg where
+ show em = showSDoc (errMsgShortDoc em)
type WarnMsg = ErrMsg
mkWarnMsg :: SrcSpan -> PrintUnqualified -> Message -> WarnMsg
mkWarnMsg = mkErrMsg
+-- Variant that doesn't care about qualified/unqualified names
+mkPlainWarnMsg :: SrcSpan -> Message -> ErrMsg
+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
--- -Werorr, which says that warnings should be fatal
+-- -Werror, which says that warnings should be fatal
errorsFound dflags (warns, errs)
| dopt Opt_WarnIsError dflags = not (isEmptyBag errs) || not (isEmptyBag warns)
| otherwise = not (isEmptyBag errs)
EQ -> True
GT -> False
-handleFlagWarnings :: DynFlags -> [String] -> IO ()
-handleFlagWarnings _ [] = return ()
+handleFlagWarnings :: DynFlags -> [Located String] -> IO ()
handleFlagWarnings dflags warns
- = do -- It would be nicer if warns :: [Message], but that has circular
+ = when (dopt Opt_WarnDeprecatedFlags dflags)
+ (handleFlagWarnings' dflags warns)
+
+handleFlagWarnings' :: DynFlags -> [Located String] -> IO ()
+handleFlagWarnings' _ [] = return ()
+handleFlagWarnings' dflags warns
+ = do -- It would be nicer if warns :: [Located Message], but that has circular
-- import problems.
- let warns' = map text warns
- mapM_ (log_action dflags SevWarning noSrcSpan defaultUserStyle) warns'
+ mapM_ (handleFlagWarning dflags) warns
when (dopt Opt_WarnIsError dflags) $
do errorMsg dflags $ text "\nFailing due to -Werror.\n"
exitWith (ExitFailure 1)
+handleFlagWarning :: DynFlags -> Located String -> IO ()
+handleFlagWarning dflags (L loc warn)
+ = log_action dflags SevWarning loc defaultUserStyle (text warn)
+
ghcExit :: DynFlags -> Int -> IO ()
ghcExit dflags val
| val == 0 = exitWith ExitSuccess