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catching mutual module import.

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This commit is contained in:
Kazu Yamamoto 2012-02-13 10:39:37 +09:00
parent cd4a839f35
commit 8deb1cd57c
1 changed files with 3 additions and 3 deletions
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6
ErrMsg.hs
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@ -57,10 +57,9 @@ ppErrMsg err = ppMsg spn msg defaultUserStyle ++ ext
ppMsg :: SrcSpan -> Message -> PprStyle -> String
#if __GLASGOW_HASKELL__ >= 702
ppMsg (UnhelpfulSpan _) _ _ = undefined
ppMsg (RealSrcSpan src) msg stl
#else
ppMsg src msg stl
ppMsg src msg stl | isGoodSrcSpan src
#endif
= file ++ ":" ++ line ++ ":" ++ col ++ ":" ++ cts ++ "\0"
where
@ -68,12 +67,13 @@ ppMsg src msg stl
line = show (srcSpanStartLine src)
col = show (srcSpanStartCol src)
cts = showMsg msg stl
ppMsg _ _ _ = "ghc-mod:0:0:Probably mutual module import occurred\0"
----------------------------------------------------------------
showMsg :: SDoc -> PprStyle -> String
#if __GLASGOW_HASKELL__ >= 702
showMsg d stl = map toNull $ renderWithStyle d stl
showMsg d stl = map toNull . renderWithStyle d $ stl
#else
showMsg d stl = map toNull . Pretty.showDocWith PageMode $ d stl
#endif