\begin{code}
module ErrUtils (
- ErrMsg, WarnMsg, Message,
+ ErrMsg, WarnMsg, Message, Messages, errorsFound, warningsFound,
+
addShortErrLocLine, addShortWarnLocLine,
- addErrLocHdrLine,
- dontAddErrLoc,
- pprBagOfErrors, pprBagOfWarnings,
+ addErrLocHdrLine, addWarnLocHdrLine, dontAddErrLoc,
+
+ printErrorsAndWarnings, pprBagOfErrors, pprBagOfWarnings,
+
+ printError,
ghcExit,
- doIfSet, dumpIfSet
+ doIfSet, doIfSet_dyn,
+ dumpIfSet, dumpIfSet_core, dumpIfSet_dyn, dumpIfSet_dyn_or,
+ showPass
) where
#include "HsVersions.h"
-import Bag ( Bag, bagToList )
-import SrcLoc ( SrcLoc, noSrcLoc )
+import Bag ( Bag, bagToList, isEmptyBag )
+import SrcLoc ( SrcLoc, noSrcLoc, isGoodSrcLoc )
import Util ( sortLt )
import Outputable
+import CmdLineOpts ( DynFlags(..), DynFlag(..), dopt )
+
+import System ( ExitCode(..), exitWith )
+import IO ( hPutStr, hPutStrLn, stderr )
\end{code}
\begin{code}
addShortErrLocLine :: SrcLoc -> Message -> ErrMsg
addErrLocHdrLine :: SrcLoc -> Message -> Message -> ErrMsg
+addWarnLocHdrLine :: SrcLoc -> Message -> Message -> ErrMsg
addShortWarnLocLine :: SrcLoc -> Message -> WarnMsg
addShortErrLocLine locn rest_of_err_msg
- = ( locn
- , hang (ppr locn <> colon)
- 4 rest_of_err_msg
- )
+ | isGoodSrcLoc locn = (locn, hang (ppr locn <> colon) 4
+ rest_of_err_msg)
+ | otherwise = (locn, rest_of_err_msg)
addErrLocHdrLine locn hdr rest_of_err_msg
= ( locn
4 rest_of_err_msg
)
-addShortWarnLocLine locn rest_of_err_msg
+addWarnLocHdrLine locn hdr rest_of_err_msg
= ( locn
- , hang (ppr locn <> colon)
- 4 (ptext SLIT("Warning:") <+> rest_of_err_msg)
+ , hang (ppr locn <> colon <+> ptext SLIT("Warning:") <+> hdr)
+ 4 (rest_of_err_msg)
)
-dontAddErrLoc :: String -> Message -> ErrMsg
-dontAddErrLoc title rest_of_err_msg
- | null title = (noSrcLoc, rest_of_err_msg)
- | otherwise =
- ( noSrcLoc, hang (text title <> colon) 4 rest_of_err_msg )
+addShortWarnLocLine locn rest_of_err_msg
+ | isGoodSrcLoc locn = (locn, hang (ppr locn <> colon) 4
+ (ptext SLIT("Warning:") <+> rest_of_err_msg))
+ | otherwise = (locn, rest_of_err_msg)
+
+dontAddErrLoc :: Message -> ErrMsg
+dontAddErrLoc msg = (noSrcLoc, msg)
+
+\end{code}
+
+\begin{code}
+printError :: String -> IO ()
+printError str = hPutStrLn stderr str
+\end{code}
+
+\begin{code}
+type Messages = (Bag WarnMsg, Bag ErrMsg)
+
+errorsFound :: Messages -> Bool
+errorsFound (warns, errs) = not (isEmptyBag errs)
+
+warningsFound :: Messages -> Bool
+warningsFound (warns, errs) = not (isEmptyBag warns)
+
+printErrorsAndWarnings :: PrintUnqualified -> Messages -> IO ()
+ -- Don't print any warnings if there are errors
+printErrorsAndWarnings unqual (warns, errs)
+ | no_errs && no_warns = return ()
+ | no_errs = printErrs unqual (pprBagOfWarnings warns)
+ | otherwise = printErrs unqual (pprBagOfErrors errs)
+ where
+ no_warns = isEmptyBag warns
+ no_errs = isEmptyBag errs
pprBagOfErrors :: Bag ErrMsg -> SDoc
pprBagOfErrors bag_of_errors
- = text "" $$ vcat [p $$ text "" | (_,p) <- sorted_errs ]
+ = vcat [text "" $$ p | (_,p) <- sorted_errs ]
where
bag_ls = bagToList bag_of_errors
sorted_errs = sortLt occ'ed_before bag_ls
\begin{code}
ghcExit :: Int -> IO ()
-
ghcExit val
- = if val /= 0
- then error "Compilation had errors\n"
- else return ()
+ | val == 0 = exitWith ExitSuccess
+ | otherwise = do hPutStr stderr "\nCompilation had errors\n\n"
+ exitWith (ExitFailure val)
\end{code}
\begin{code}
doIfSet :: Bool -> IO () -> IO ()
doIfSet flag action | flag = action
| otherwise = return ()
+
+doIfSet_dyn :: DynFlags -> DynFlag -> IO () -> IO()
+doIfSet_dyn dflags flag action | dopt flag dflags = action
+ | otherwise = return ()
\end{code}
\begin{code}
+showPass :: DynFlags -> String -> IO ()
+showPass dflags what
+ | verbosity dflags >= 2 = hPutStr stderr ("*** "++what++":\n")
+ | otherwise = return ()
+
dumpIfSet :: Bool -> String -> SDoc -> IO ()
dumpIfSet flag hdr doc
- | not flag = return ()
- | otherwise = printDump dump
- where
- dump = vcat [text "",
- line <+> text hdr <+> line,
- doc,
- text ""]
- line = text (take 20 (repeat '='))
+ | not flag = return ()
+ | otherwise = printDump (dump hdr doc)
+
+dumpIfSet_core :: DynFlags -> DynFlag -> String -> SDoc -> IO ()
+dumpIfSet_core dflags flag hdr doc
+ | dopt flag dflags
+ || verbosity dflags >= 4
+ || dopt Opt_D_verbose_core2core dflags = printDump (dump hdr doc)
+ | otherwise = return ()
+
+dumpIfSet_dyn :: DynFlags -> DynFlag -> String -> SDoc -> IO ()
+dumpIfSet_dyn dflags flag hdr doc
+ | dopt flag dflags || verbosity dflags >= 4 = printDump (dump hdr doc)
+ | otherwise = return ()
+
+dumpIfSet_dyn_or :: DynFlags -> [DynFlag] -> String -> SDoc -> IO ()
+dumpIfSet_dyn_or dflags flags hdr doc
+ | or [dopt flag dflags | flag <- flags]
+ || verbosity dflags >= 4
+ = printDump (dump hdr doc)
+ | otherwise = return ()
+
+dump hdr doc
+ = vcat [text "",
+ line <+> text hdr <+> line,
+ doc,
+ text ""]
+ where
+ line = text (take 20 (repeat '='))
\end{code}