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%
% (c) The AQUA Project, Glasgow University, 1994-1995
%
\section[ErrsUtils]{Utilities for error reporting}
This is an internal module---access to these functions is through
@Errors@.
DPH errors are in here, too.
\begin{code}
#include "HsVersions.h"
module ErrUtils where
import Bag ( Bag, bagToList )
import Outputable
import Pretty -- to pretty-print error messages
import SrcLoc ( mkUnknownSrcLoc, SrcLoc )
import Util
\end{code}
\begin{code}
type Error = PprStyle -> Pretty
addErrLoc :: SrcLoc -> String -> Error -> Error
addErrLoc locn title rest_of_err_msg sty
= ppHang (ppBesides [ppr PprForUser locn,
if null title then ppNil else ppStr (": " ++ title),
ppChar ':'])
4 (rest_of_err_msg sty)
addShortErrLocLine :: SrcLoc -> Error -> Error
addShortErrLocLine locn rest_of_err_msg sty
= ppHang (ppBeside (ppr PprForUser locn) (ppChar ':'))
4 (rest_of_err_msg sty)
dontAddErrLoc :: String -> Error -> Error
dontAddErrLoc title rest_of_err_msg sty
= ppHang (ppBesides [ppStr title, ppChar ':'])
4 (rest_of_err_msg sty)
pprBagOfErrors :: PprStyle -> Bag Error -> Pretty
pprBagOfErrors sty bag_of_errors
= let pretties = map ( \ e -> e sty ) (bagToList bag_of_errors) in
ppAboves (map (\ p -> ppAbove ppSP p) pretties)
#ifdef DPH
addWarningLoc :: SrcLoc -> Error -> Error
addWarningLoc locn rest_of_err_msg sty
= ppHang (ppBesides [ppStr "*** Warning *** ",
ppr PprForUser locn,ppStr ": "])
4 (ppAbove (rest_of_err_msg sty)
(ppSP))
addWarning :: Error -> Error
addWarning rest_of_err_msg sty
= ppBeside (ppStr "*** Warning *** : ")
(rest_of_err_msg sty)
#endif {- Data Parallel Haskell -}
\end{code}
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