Make the flatfunc in FuncMap optional.

[matthijs/master-project/cλash.git] / TranslatorTypes.hs

diff --git a/TranslatorTypes.hs b/TranslatorTypes.hs
index 8db0b5f1d6f786b200511f14485061c2bf535696..60d12ebb0c53fd387dd1772861dea48567918cb2 100644 (file)
--- a/TranslatorTypes.hs
+++ b/TranslatorTypes.hs
@@ -6,14 +6,15 @@ module TranslatorTypes where
 
 import qualified Control.Monad.State as State
 import qualified HscTypes
+import qualified Data.Map as Map
 import Flatten
 
 
 -- | A map from a HsFunction identifier to various stuff we collect about a
 --   function along the way.
-type FuncMap  = [(HsFunction, FuncData)]
+type FuncMap  = Map.Map HsFunction FuncData
 -- | Some stuff we collect about a function along the way.
-type FuncData = (FlatFunction)
+type FuncData = (Maybe FlatFunction)
 
 data VHDLSession = VHDLSession {
   coreMod   :: HscTypes.CoreModule, -- The current module
@@ -22,16 +23,17 @@ data VHDLSession = VHDLSession {
 }
 
 -- | Add the function to the session
-addFunc :: HsFunction -> FlatFunction -> VHDLState ()
-addFunc hsfunc flatfunc = do
+addFunc :: HsFunction -> VHDLState ()
+addFunc hsfunc = do
   fs <- State.gets funcs -- Get the funcs element from the session
-  State.modify (\x -> x {funcs = (hsfunc, flatfunc) : fs }) -- Prepend name and f
+  let fs' = Map.insert hsfunc (Nothing) fs -- Insert function
+  State.modify (\x -> x {funcs = fs' })
 
 -- | Find the given function in the current session
 getFunc :: HsFunction -> VHDLState (Maybe FuncData)
 getFunc hsfunc = do
   fs <- State.gets funcs -- Get the funcs element from the session
-  return $ lookup hsfunc fs
+  return $ Map.lookup hsfunc fs
 
 getModule :: VHDLState HscTypes.CoreModule
 getModule = State.gets coreMod -- Get the coreMod element from the session