\begin{code}
module ErrUtils (
- Message, mkLocMessage, printError,
+ Message, mkLocMessage, printError, pprMessageBag,
Severity(..),
- ErrMsg, WarnMsg, throwErrMsg, handleErrMsg,
- ErrorMessages, WarningMessages,
- errMsgSpans, errMsgContext, errMsgShortDoc, errMsgExtraInfo,
+ ErrMsg, WarnMsg,
+ ErrorMessages, WarningMessages,
+ errMsgSpans, errMsgContext, errMsgShortDoc, errMsgExtraInfo,
Messages, errorsFound, emptyMessages,
mkErrMsg, mkPlainErrMsg, mkLongErrMsg, mkWarnMsg, mkPlainWarnMsg,
printErrorsAndWarnings, printBagOfErrors, printBagOfWarnings,
- handleFlagWarnings,
+ warnIsErrorMsg, mkLongWarnMsg,
ghcExit,
doIfSet, doIfSet_dyn,
- dumpIfSet, dumpIf_core, dumpIfSet_core, dumpIfSet_dyn, dumpIfSet_dyn_or,
+ dumpIfSet, dumpIfSet_dyn, dumpIfSet_dyn_or,
mkDumpDoc, dumpSDoc,
-- * Messages during compilation
import Control.Monad
import System.Exit ( ExitCode(..), exitWith )
-import Data.Dynamic
import Data.List
import System.IO
-import Exception
-- -----------------------------------------------------------------------------
-- Basic error messages: just render a message with a source location.
type Message = SDoc
+pprMessageBag :: Bag Message -> SDoc
+pprMessageBag msgs = vcat (punctuate blankLine (bagToList msgs))
+
data Severity
= SevInfo
| SevWarning
errMsgExtraInfo :: Message
}
-- The SrcSpan is used for sorting errors into line-number order
- -- NB Pretty.Doc not SDoc: we deal with the printing style (in ptic
- -- whether to qualify an External Name) at the error occurrence
-
-#if __GLASGOW_HASKELL__ >= 609
-instance Exception ErrMsg
-#endif
instance Show ErrMsg where
show em = showSDoc (errMsgShortDoc em)
-throwErrMsg :: ErrMsg -> a
-#if __GLASGOW_HASKELL__ < 609
-throwErrMsg = throwDyn
-#else
-throwErrMsg = throw
-#endif
-
-handleErrMsg :: (ErrMsg -> IO a) -> IO a -> IO a
-#if __GLASGOW_HASKELL__ < 609
-handleErrMsg = flip catchDyn
-#else
-handleErrMsg = handle
-#endif
-
--- So we can throw these things as exceptions
-errMsgTc :: TyCon
-errMsgTc = mkTyCon "ErrMsg"
-{-# NOINLINE errMsgTc #-}
-instance Typeable ErrMsg where
- typeOf _ = mkTyConApp errMsgTc []
-
type WarnMsg = ErrMsg
-- A short (one-line) error message, with context to tell us whether
-- to qualify names in the message or not.
mkErrMsg :: SrcSpan -> PrintUnqualified -> Message -> ErrMsg
mkErrMsg locn print_unqual msg
- = ErrMsg [locn] print_unqual msg empty
+ = ErrMsg { errMsgSpans = [locn], errMsgContext = print_unqual
+ , errMsgShortDoc = msg, errMsgExtraInfo = empty }
-- Variant that doesn't care about qualified/unqualified names
mkPlainErrMsg :: SrcSpan -> Message -> ErrMsg
mkPlainErrMsg locn msg
- = ErrMsg [locn] alwaysQualify msg empty
+ = ErrMsg { errMsgSpans = [locn], errMsgContext = alwaysQualify
+ , errMsgShortDoc = msg, errMsgExtraInfo = empty }
-- A long (multi-line) error message, with context to tell us whether
-- to qualify names in the message or not.
mkLongErrMsg :: SrcSpan -> PrintUnqualified -> Message -> Message -> ErrMsg
mkLongErrMsg locn print_unqual msg extra
- = ErrMsg [locn] print_unqual msg extra
+ = ErrMsg { errMsgSpans = [locn], errMsgContext = print_unqual
+ , errMsgShortDoc = msg, errMsgExtraInfo = extra }
mkWarnMsg :: SrcSpan -> PrintUnqualified -> Message -> WarnMsg
mkWarnMsg = mkErrMsg
+mkLongWarnMsg :: SrcSpan -> PrintUnqualified -> Message -> Message -> ErrMsg
+mkLongWarnMsg = mkLongErrMsg
+
-- Variant that doesn't care about qualified/unqualified names
mkPlainWarnMsg :: SrcSpan -> Message -> ErrMsg
mkPlainWarnMsg locn msg = mkWarnMsg locn alwaysQualify msg
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
EQ -> True
GT -> False
-handleFlagWarnings :: DynFlags -> [Located String] -> IO ()
-handleFlagWarnings dflags warns
- = 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.
- 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
| not flag = return ()
| otherwise = printDump (mkDumpDoc hdr doc)
-dumpIf_core :: Bool -> DynFlags -> DynFlag -> String -> SDoc -> IO ()
-dumpIf_core cond dflags dflag hdr doc
- | cond
- || verbosity dflags >= 4
- || dopt Opt_D_verbose_core2core dflags
- = dumpSDoc dflags dflag hdr doc
-
- | otherwise = return ()
-
-dumpIfSet_core :: DynFlags -> DynFlag -> String -> SDoc -> IO ()
-dumpIfSet_core dflags flag hdr doc
- = dumpIf_core (dopt flag dflags) dflags flag hdr doc
-
dumpIfSet_dyn :: DynFlags -> DynFlag -> String -> SDoc -> IO ()
dumpIfSet_dyn dflags flag hdr doc
| dopt flag dflags || verbosity dflags >= 4
mkDumpDoc :: String -> SDoc -> SDoc
mkDumpDoc hdr doc
- = vcat [text "",
+ = vcat [blankLine,
line <+> text hdr <+> line,
doc,
- text ""]
+ blankLine]
where
line = text (replicate 20 '=')
projects / ghc-hetmet.git / blobdiff