Add some comments on the alternative layout rule state

[ghc-hetmet.git] / compiler / parser / RdrHsSyn.lhs

diff --git a/compiler/parser/RdrHsSyn.lhs b/compiler/parser/RdrHsSyn.lhs
index 92c7415..fdf97bc 100644 (file)
--- a/compiler/parser/RdrHsSyn.lhs
+++ b/compiler/parser/RdrHsSyn.lhs
@@ -73,7 +73,7 @@ import Maybes
 import Control.Applicative ((<$>))       
 import Text.ParserCombinators.ReadP as ReadP
 import Data.List        ( nubBy )
-import Data.Char        ( isAscii, isAlphaNum, isAlpha )
+import Data.Char
 
 #include "HsVersions.h"
 \end{code}
@@ -985,9 +985,9 @@ mkImport :: CCallConv
         -> P (HsDecl RdrName)
 mkImport cconv safety (L loc entity, v, ty)
   | cconv == PrimCallConv                      = do
-  let funcTarget = CFunction (StaticTarget entity)
-      importSpec = CImport PrimCallConv safety nilFS funcTarget
-  return (ForD (ForeignImport v ty importSpec))
+    let funcTarget = CFunction (StaticTarget entity)
+        importSpec = CImport PrimCallConv safety nilFS funcTarget
+    return (ForD (ForeignImport v ty importSpec))
   | otherwise = do
     case parseCImport cconv safety (mkExtName (unLoc v)) (unpackFS entity) of
       Nothing         -> parseError loc "Malformed entity string"
@@ -1012,7 +1012,9 @@ parseCImport cconv safety nm str =
 
    mk = CImport cconv safety
 
-   hdr_char c = isAscii c && (isAlphaNum c || c `elem` "._")
+   hdr_char c = not (isSpace c) -- header files are filenames, which can contain
+                                -- pretty much any char (depending on the platform),
+                                -- so just accept any non-space character
    id_char  c = isAlphaNum c || c == '_'
 
    cimp nm = (ReadP.char '&' >> skipSpaces >> CLabel <$> cid)