HpcOverlay.hs 4.94 KB
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module HpcOverlay where

import HpcFlags
import HpcParser
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import HpcUtils
import Trace.Hpc.Tix
import Trace.Hpc.Mix
import Trace.Hpc.Util
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import qualified Data.Map as Map
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import Data.Tree
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overlay_options :: FlagOptSeq
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overlay_options 
        = srcDirOpt
        . hpcDirOpt
        . outputOpt

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overlay_plugin :: Plugin
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overlay_plugin = Plugin { name = "overlay"
	      	       , usage = "[OPTION] .. <OVERLAY_FILE> [<OVERLAY_FILE> [...]]" 
		       , options = overlay_options 
		       , summary = "Generate a .tix file from an overlay file"
		       , implementation = overlay_main
		       , init_flags = default_flags
		       , final_flags = default_final_flags
		       }

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overlay_main :: Flags -> [String] -> IO ()
overlay_main _     [] = hpcError overlay_plugin $ "no overlay file specified" 
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overlay_main flags files = do
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  specs <- mapM hpcParser files
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  let (Spec globals modules) = concatSpec specs
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  let modules1 = Map.fromListWith (++) [ (m,info) | (m,info) <- modules ]

  mod_info <-
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     sequence [ do mix@(Mix origFile _ _ _ _) <- readMixWithFlags flags (Left modu)
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	           content <- readFileFromPath (hpcError overlay_plugin) origFile (srcDirs flags)
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	           processModule modu content mix mod_spec globals
              | (modu, mod_spec) <- Map.toList modules1
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              ]


  let tix = Tix $ mod_info

  case outputFile flags of
    "-" -> putStrLn (show tix)
    out -> writeFile out (show tix)


processModule :: String		-- ^ module name
	      -> String		-- ^ module contents
	      -> Mix		-- ^ mix entry for this module
              -> [Tick] 	-- ^ local ticks
              -> [ExprTick]	-- ^ global ticks
              -> IO TixModule 
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processModule modName modContents (Mix _ _ hash _ entries) locals globals = do
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   let hsMap :: Map.Map Int String
       hsMap = Map.fromList (zip [1..] $ lines modContents)

   let topLevelFunctions =
        Map.fromListWith (++)
                     [ (nm,[pos])
                     | (pos,TopLevelBox [nm]) <- entries
                     ]

   let inside :: HpcPos -> String -> Bool
       inside pos nm =
                       case Map.lookup nm topLevelFunctions of
                         Nothing -> False
                         Just poss -> any (pos `insideHpcPos`) poss

   -- TODO: rename plzTick => plzExprTick, plzTopPick => plzTick
   let plzTick :: HpcPos -> BoxLabel -> ExprTick -> Bool
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       plzTick pos (ExpBox _) (TickExpression _ match q _)  =
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                     qualifier pos q
                  && case match of
			Nothing -> True
			Just str -> str == grabHpcPos hsMap pos
       plzTick _   _       _ = False


       plzTopTick :: HpcPos -> BoxLabel -> Tick -> Bool
       plzTopTick pos label  (ExprTick ignore)           = plzTick pos label ignore
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       plzTopTick pos _      (TickFunction fn q _)   =
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                    qualifier pos q && pos `inside` fn
       plzTopTick pos label  (InsideFunction fn igs)   =
         pos `inside` fn && any (plzTopTick pos label) igs


   let tixs = Map.fromList
              [ (ix,
                   any (plzTick pos label) globals
                || any (plzTopTick pos label) locals)
              | (ix,(pos,label)) <- zip [0..] entries
              ]


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   -- let show' (srcspan,stuff) = show (srcspan,stuff,grabHpcPos hsMap span)
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   let forest = createMixEntryDom
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              [ (srcspan,ix)
              | ((srcspan,_),ix) <- zip entries [0..]
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              ]


   --    
   let forest2 = addParentToList [] $ forest
--   putStrLn $ drawForest $ map (fmap show') $ forest2

   let isDomList = Map.fromList
              [ (ix,filter (/= ix) rng ++ dom)
              | (_,(rng,dom)) <- concatMap flatten forest2
              , ix <- rng
              ]

   -- We do not use laziness here, because the dominator lists
   -- point to their equivent peers, creating loops.


   let isTicked n =
           case Map.lookup n tixs of
             Just v -> v
             Nothing -> error $ "can not find ix # " ++ show n

   let tixs' = [ case Map.lookup n isDomList of
                   Just vs -> if any isTicked (n : vs) then 1 else 0
                   Nothing -> error $ "can not find ix in dom list # " ++ show n
               | n <- [0..(length entries - 1)]
               ]

   return $ TixModule modName hash (length tixs') tixs'

qualifier :: HpcPos -> Maybe Qualifier -> Bool
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qualifier _   Nothing = True
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qualifier pos (Just (OnLine n)) = n == l1 && n == l2
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  where (l1,_,l2,_) = fromHpcPos pos
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qualifier pos (Just (AtPosition l1' c1' l2' c2')) 
	  = (l1', c1', l2', c2') == fromHpcPos pos

concatSpec :: [Spec] -> Spec
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concatSpec = foldr 
	       (\ (Spec pre1 body1) (Spec pre2 body2) 
		     -> Spec (pre1 ++ pre2) (body1 ++ body2))
		(Spec [] [])
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addParentToTree :: [a] -> MixEntryDom [a] -> MixEntryDom ([a],[a])
addParentToTree path (Node (pos,a) children) =
                Node (pos,(a,path)) (addParentToList (a ++ path) children)

addParentToList :: [a] -> [MixEntryDom [a]] -> [MixEntryDom ([a],[a])]
addParentToList path nodes = map (addParentToTree path) nodes