module SrcLoc (
SrcLoc, -- Abstract
- mkSrcLoc,
- noSrcLoc, isNoSrcLoc, -- "I'm sorry, I haven't a clue"
+ mkSrcLoc, isGoodSrcLoc, isWiredInLoc,
+ noSrcLoc, -- "I'm sorry, I haven't a clue"
- mkIfaceSrcLoc, -- Unknown place in an interface
- -- (this one can die eventually ToDo)
-
- mkBuiltinSrcLoc, -- Something wired into the compiler
-
- mkGeneratedSrcLoc, -- Code generated within the compiler
+ importedSrcLoc, -- Unknown place in an interface
+ wiredInSrcLoc, -- Something wired into the compiler
+ generatedSrcLoc, -- Code generated within the compiler
incSrcLine, replaceSrcLine,
import Outputable
import FastString ( unpackFS )
import FastTypes
-import GlaExts ( Int(..), (+#) )
+import FastString
+
+import GLAEXTS ( (+#) )
\end{code}
%************************************************************************
this is the obvious stuff:
\begin{code}
data SrcLoc
- = NoSrcLoc
+ = WiredInLoc -- Used exclusively for Ids and TyCons
+ -- that are totally wired in to the
+ -- compiler. That supports the
+ -- occasionally-useful predicate
+ -- isWiredInName
- | SrcLoc FAST_STRING -- A precise location (file name)
+ | SrcLoc FastString -- A precise location (file name)
FastInt
- | UnhelpfulSrcLoc FAST_STRING -- Just a general indication
+ | UnhelpfulSrcLoc FastString -- Just a general indication
\end{code}
Note that an entity might be imported via more than one route, and
Things to make 'em:
\begin{code}
-noSrcLoc = NoSrcLoc
-mkSrcLoc x y = SrcLoc x (iUnbox y)
+mkSrcLoc x y = SrcLoc x (iUnbox y)
+wiredInSrcLoc = WiredInLoc
+noSrcLoc = UnhelpfulSrcLoc FSLIT("<No locn>")
+importedSrcLoc = UnhelpfulSrcLoc FSLIT("<imported>")
+generatedSrcLoc = UnhelpfulSrcLoc FSLIT("<compiler-generated-code>")
-mkIfaceSrcLoc = UnhelpfulSrcLoc SLIT("<an interface file>")
-mkBuiltinSrcLoc = UnhelpfulSrcLoc SLIT("<built-into-the-compiler>")
-mkGeneratedSrcLoc = UnhelpfulSrcLoc SLIT("<compiler-generated-code>")
+isGoodSrcLoc (SrcLoc _ _) = True
+isGoodSrcLoc other = False
-isNoSrcLoc NoSrcLoc = True
-isNoSrcLoc other = False
+isWiredInLoc WiredInLoc = True
+isWiredInLoc other = False
-srcLocFile :: SrcLoc -> FAST_STRING
+srcLocFile :: SrcLoc -> FastString
srcLocFile (SrcLoc fname _) = fname
srcLocLine :: SrcLoc -> FastInt
instance Ord SrcLoc where
compare = cmpSrcLoc
-cmpSrcLoc NoSrcLoc NoSrcLoc = EQ
-cmpSrcLoc NoSrcLoc other = LT
+cmpSrcLoc WiredInLoc WiredInLoc = EQ
+cmpSrcLoc WiredInLoc other = LT
cmpSrcLoc (UnhelpfulSrcLoc s1) (UnhelpfulSrcLoc s2) = s1 `compare` s2
cmpSrcLoc (UnhelpfulSrcLoc s1) other = GT
-cmpSrcLoc (SrcLoc s1 l1) NoSrcLoc = GT
+cmpSrcLoc (SrcLoc s1 l1) WiredInLoc = GT
cmpSrcLoc (SrcLoc s1 l1) (UnhelpfulSrcLoc _) = LT
cmpSrcLoc (SrcLoc s1 l1) (SrcLoc s2 l2) = (s1 `compare` s2) `thenCmp` (l1 `cmpline` l2)
where
instance Outputable SrcLoc where
ppr (SrcLoc src_path src_line)
= getPprStyle $ \ sty ->
- if userStyle sty then
- hcat [ text src_file, char ':', int (iBox src_line) ]
- else
- if debugStyle sty then
- hcat [ ptext src_path, char ':', int (iBox src_line) ]
+ if userStyle sty || debugStyle sty then
+ hcat [ ftext src_path, char ':', int (iBox src_line) ]
else
hcat [text "{-# LINE ", int (iBox src_line), space,
- char '\"', ptext src_path, text " #-}"]
+ char '\"', ftext src_path, text " #-}"]
where
src_file = unpackFS src_path -- Leave the directory prefix intact,
-- so emacs can find the file
- ppr (UnhelpfulSrcLoc s) = ptext s
-
- ppr NoSrcLoc = text "<NoSrcLoc>"
+ ppr (UnhelpfulSrcLoc s) = ftext s
+ ppr WiredInLoc = ptext SLIT("<Wired in>")
\end{code}