Add Outputable.blankLine and use it

[ghc-hetmet.git] / compiler / main / ErrUtils.lhs

diff --git a/compiler/main/ErrUtils.lhs b/compiler/main/ErrUtils.lhs
index 9159a3e..66ade90 100644 (file)
--- a/compiler/main/ErrUtils.lhs
+++ b/compiler/main/ErrUtils.lhs
@@ -9,12 +9,11 @@ module ErrUtils (
        Severity(..),
 
        ErrMsg, WarnMsg,
-    ErrorMessages, WarningMessages,
-       errMsgSpans, errMsgContext, errMsgShortDoc, errMsgExtraInfo,
+        ErrorMessages, WarningMessages,
        Messages, errorsFound, emptyMessages,
        mkErrMsg, mkPlainErrMsg, mkLongErrMsg, mkWarnMsg, mkPlainWarnMsg,
        printErrorsAndWarnings, printBagOfErrors, printBagOfWarnings,
-       warnIsErrorMsg,
+       warnIsErrorMsg, mkLongWarnMsg,
 
        ghcExit,
        doIfSet, doIfSet_dyn, 
@@ -77,8 +76,6 @@ data ErrMsg = ErrMsg {
        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
 
 instance Show ErrMsg where
     show em = showSDoc (errMsgShortDoc em)
@@ -89,22 +86,28 @@ type WarnMsg = ErrMsg
 -- 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
@@ -227,10 +230,10 @@ dumpIfSet_dyn_or dflags flags hdr doc
 
 mkDumpDoc :: String -> SDoc -> SDoc
 mkDumpDoc hdr doc 
-   = vcat [text "", 
+   = vcat [blankLine,
           line <+> text hdr <+> line,
           doc,
-          text ""]
+          blankLine]
      where 
         line = text (replicate 20 '=')