spans, isSubspanOf
) where
+#include "Typeable.h"
+
import Util
import Outputable
import FastString
import Data.Bits
+import Data.Data
\end{code}
%************************************************************************
-- | Raises an error when used on a "bad" 'SrcLoc'
srcLocLine :: SrcLoc -> Int
srcLocLine (SrcLoc _ l _) = l
-srcLocLine _other = panic "srcLocLine: unknown line"
+srcLocLine (UnhelpfulLoc s) = pprPanic "srcLocLine" (ftext s)
-- | Raises an error when used on a "bad" 'SrcLoc'
srcLocCol :: SrcLoc -> Int
srcLocCol (SrcLoc _ _ c) = c
-srcLocCol _other = panic "srcLocCol: unknown col"
+srcLocCol (UnhelpfulLoc s) = pprPanic "srcLocCol" (ftext s)
-- | Move the 'SrcLoc' down by one line if the character is a newline,
-- to the next 8-char tabstop if it is a tab, and across by one
-- character in any other case
advanceSrcLoc :: SrcLoc -> Char -> SrcLoc
advanceSrcLoc (SrcLoc f l _) '\n' = SrcLoc f (l + 1) 1
-advanceSrcLoc (SrcLoc f l c) '\t' = SrcLoc f l ((((c `shiftR` 3) + 1)
+advanceSrcLoc (SrcLoc f l c) '\t' = SrcLoc f l (((((c - 1) `shiftR` 3) + 1)
`shiftL` 3) + 1)
advanceSrcLoc (SrcLoc f l c) _ = SrcLoc f l (c + 1)
advanceSrcLoc loc _ = loc -- Better than nothing
char '\"', pprFastFilePath src_path, text " #-}"]
ppr (UnhelpfulLoc s) = ftext s
+
+INSTANCE_TYPEABLE0(SrcSpan,srcSpanTc,"SrcSpan")
+
+instance Data SrcSpan where
+ -- don't traverse?
+ toConstr _ = abstractConstr "SrcSpan"
+ gunfold _ _ = error "gunfold"
+ dataTypeOf _ = mkNoRepType "SrcSpan"
\end{code}
%************************************************************************
\begin{code}
-- | We attach SrcSpans to lots of things, so let's have a datatype for it.
data Located e = L SrcSpan e
+ deriving (Eq, Ord, Typeable, Data)
unLoc :: Located e -> e
unLoc (L _ e) = e
fmap f (L l e) = L l (f e)
instance Outputable e => Outputable (Located e) where
- ppr (L l e) = ifPprDebug (braces (pprUserSpan False l)) <> ppr e
+ ppr (L l e) = ifPprDebug (braces (pprUserSpan False l)) $$ ppr e
-- Print spans without the file name etc
\end{code}