Added -q option to list fully qualified names with browse command

Language/Haskell/GhcMod/Browse.hs

@@ -4,7 +4,7 @@ import Control.Applicative
 import Control.Monad (void)
 import Data.Char
 import Data.List
-import Data.Maybe (fromMaybe)
+import Data.Maybe (catMaybes)
 import DataCon (dataConRepType)
 import FastString (mkFastString)
 import GHC
@@ -26,19 +26,7 @@ browseModule :: Options
              -> Cradle
              -> ModuleString -- ^ A module name. (e.g. \"Data.List\")
              -> IO String
-browseModule opt cradle mdlName = convert opt . format <$> withGHCDummyFile (browse opt cradle mdlName)
-  where
-    format
-      | operators opt = formatOps
-      | otherwise     = removeOps
-    removeOps = sort . filter (isAlpha.head)
-    formatOps = sort . map formatOps'
-    formatOps' x@(s:_)
-      | isAlpha s = x
-      | otherwise = "(" ++ name ++ ")" ++ tail_
-      where
-        (name, tail_) = break isSpace x
-    formatOps' [] = error "formatOps'"
+browseModule opt cradle mdlName = convert opt . sort <$> withGHCDummyFile (browse opt cradle mdlName)
 
 -- | Getting functions, classes, etc from a module.
 --   If 'detailed' is 'True', their types are also obtained.
@@ -53,26 +41,42 @@ browse opt cradle mdlName = do
   where
     getModule = findModule (mkModuleName mdlName) (mkFastString <$> packageId opt)
     listExports Nothing       = return []
-    listExports (Just mdinfo)
-      | detailed opt = processModule mdinfo
-      | otherwise    = return (processExports mdinfo)
+    listExports (Just mdinfo) = processExports opt mdinfo
 
-processExports :: ModuleInfo -> [String]
-processExports = map getOccString . modInfoExports
-
-processModule :: ModuleInfo -> Ghc [String]
-processModule minfo = mapM processName names
+processExports :: Options -> ModuleInfo -> Ghc [String]
+processExports opt minfo = mapM (showExport opt minfo) $ removeOps $ modInfoExports minfo
   where
-    names = modInfoExports minfo
-    processName :: Name -> Ghc String
-    processName nm = do
-        tyInfo <- modInfoLookupName minfo nm
+    removeOps
+      | operators opt = id
+      | otherwise = filter (isAlpha . head . getOccString)
+
+showExport :: Options -> ModuleInfo -> Name -> Ghc String
+showExport opt minfo e = do
+  mtype' <- mtype
+  return $ concat $ catMaybes [mqualified, Just $ formatOp $ getOccString e, mtype']
+  where
+    mqualified
+      | qualified opt = Just $ moduleNameString (moduleName $ nameModule e) ++ "."
+      | otherwise = Nothing
+    mtype
+      | detailed opt = do
+        tyInfo <- modInfoLookupName minfo e
         -- If nothing found, load dependent module and lookup global
-        tyResult <- maybe (inOtherModule nm) (return . Just) tyInfo
+        tyResult <- maybe (inOtherModule e) (return . Just) tyInfo
         dflag <- getSessionDynFlags
-        return $ fromMaybe (getOccString nm) (tyResult >>= showThing dflag)
+        return $ do
+          typeName <- tyResult >>= showThing dflag
+          (" :: " ++ typeName) `justIf` detailed opt
+      | otherwise = return Nothing
+    formatOp nm@(n:_)
+      | isAlpha n = nm
+      | otherwise = "(" ++ nm ++ ")"
+    formatOp "" = error "formatOp"
     inOtherModule :: Name -> Ghc (Maybe TyThing)
     inOtherModule nm = getModuleInfo (nameModule nm) >> lookupGlobalName nm
+    justIf :: a -> Bool -> Maybe a
+    justIf x True = Just x
+    justIf _ False = Nothing
 
 showThing :: DynFlags -> TyThing -> Maybe String
 showThing dflag (AnId i)     = Just $ formatType dflag varType i
@@ -83,7 +87,7 @@ showThing _     (ATyCon t)   = unwords . toList <$> tyType t
 showThing _     _            = Nothing
 
 formatType :: NamedThing a => DynFlags -> (a -> Type) -> a -> String
-formatType dflag f x = getOccString x ++ " :: " ++ showOutputable dflag (removeForAlls $ f x)
+formatType dflag f x = showOutputable dflag (removeForAlls $ f x)
 
 tyType :: TyCon -> Maybe String
 tyType typ

Language/Haskell/GhcMod/Types.hs

@@ -17,6 +17,8 @@ data Options = Options {
   , operators     :: Bool
   -- | If 'True', 'browse' also returns types.
   , detailed      :: Bool
+  -- | If 'True', 'browse' will return fully qualified name
+  , qualified     :: Bool
   -- | Whether or not Template Haskell should be expanded.
   , expandSplice  :: Bool
   -- | Line separator string.
@@ -33,6 +35,7 @@ defaultOptions = Options {
   , ghcOpts       = []
   , operators     = False
   , detailed      = False
+  , qualified     = False
   , expandSplice  = False
   , lineSeparator = LineSeparator "\0"
   , packageId     = Nothing

src/GHCMod.hs

@@ -27,7 +27,7 @@ usage =    "ghc-mod version " ++ showVersion version ++ "\n"
         ++ "\t ghc-mod list" ++ ghcOptHelp ++ "[-l] [-d]\n"
         ++ "\t ghc-mod lang [-l]\n"
         ++ "\t ghc-mod flag [-l]\n"
-        ++ "\t ghc-mod browse" ++ ghcOptHelp ++ "[-l] [-o] [-d] [-p package] <module> [<module> ...]\n"
+        ++ "\t ghc-mod browse" ++ ghcOptHelp ++ "[-l] [-o] [-d] [-q] [-p package] <module> [<module> ...]\n"
         ++ "\t ghc-mod check" ++ ghcOptHelp ++ "<HaskellFiles...>\n"
         ++ "\t ghc-mod expand" ++ ghcOptHelp ++ "<HaskellFiles...>\n"
         ++ "\t ghc-mod debug" ++ ghcOptHelp ++ "<HaskellFile>\n"
@@ -55,6 +55,9 @@ argspec = [ Option "l" ["tolisp"]
           , Option "d" ["detailed"]
             (NoArg (\opts -> opts { detailed = True }))
             "print detailed info"
+          , Option "q" ["qualified"]
+            (NoArg (\opts -> opts { qualified = True }))
+            "show qualified names"
           , Option "p" ["package"]
             (ReqArg (\p opts -> opts { packageId = Just p, ghcOpts = ("-package " ++ p) : ghcOpts opts }) "package-id")
             "specify package of module"